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SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ( { moulding devices for producing toilet or cosmetic sticks A45D 40/16} ; working in the manner of metal B23; grinding, polishing B24; cutting B26D, B26F; making preforms B29B 11/00 ; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B 37/00 - B32B 41/00)
Definition statement
This subclass/group covers:

The working of plastics is covered in the subclass B29C. Its scope is however so broad that a detailed description of the subject matter appropriate for this place is correctly possible only at the main-group level, e.g. B29C 33/00.

The working of plastics includes besides processes, apparatuses therefore as well as products, as long as the products are characterised by a method provided in this subclass.

Relationship between large subject matter areas

The working of plastics is, as far as possible, classified primarily according to the particular shaping technique used, e.g. in subclass B29C.

Classification according to production of particular articles in subclass B29D is restricted to:

  • aspects which are characteristic for the production of a particular article, and not classifiable in subclass B29B or B29C;
  • combined operations for making the particular article which are not fully classifiable in subclass B29C.
References relevant to classification in this subclass
This subclass/group does not cover:

Moulding devices for producing toilet or cosmetic sticks

Working of plastics sheet material in a manner analogous to the working of paper

Chemical aspects of working of plastics

section C, particularly C08

Informative references
Attention is drawn to the following places, which may be of interest for search:

Processing doughs

Working chocolate

Casting of metals

Grinding, polishing

Cutting

Working cement, clay

Making preforms

Making laminated products by combining previously unconnected layers which become one product whose layers will remain together

Working glass

Candle making

Making soap

Manufacture of artificial filaments, threads, fibres, bristles or ribbons

Manufacture of articles from cellulosic fibrous suspensions or from papier-mâchè

Special rules of classification within this subclass

Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D, is classified in group B29C 73/00;

Component parts, details, accessories or auxiliary operations which are applicable to more than one moulding technique a reclassified in groups B29C 31/00 to B29C 37/00; Component parts, details, accessories or auxiliary operations which are only of use for one specific shaping technique a reclassified only in the relevant subgroups of groups B29C 39/00 to B29C 71/00.

In this subclass, it is desirable to add the Indexing Codes of subclasses B29K and B29L

Products per se are not classified in this subclass. However, if a product is characterised by the way it is produced and not by its structure or composition, the production method should be classified in this subclass.

Inventive and additional information disclosed in documents to be classified should be identified by allocation the appropriate classification symbols provided in B29C. In particular attention should be paid to the so called break down Indexing Codes, forming a further subdivision of a group or a subgroup, which are only present at additional information level.

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

A plastic

is a macromolecular compound or composition based on such a compound

In a plastic state

refers to a state in which the material is more or less easily deformable, locally or as a whole, by force in any direction, to assume and retain any desired shape.

Synonyms and Keywords

In patent documents the following abbreviations are often used:

Resins

Japanese patent applications usually refer to resins instead of plastics

Handling, e.g. feeding of the material to be shaped, {storage of plastics material before moulding; Automation, i.e. automated handling lines in plastics processing plants, e.g. using manipulators or robots ( discharging moulded articles from the mould B29C 37/0003 ; storage of prepregs or SMC after impregnation or during ageing B29C 70/54 ; baling of rubber B29B 15/02 ; in general B65G) }
References relevant to classification in this group
This subclass/group does not cover:

Handling tyres or parts thereof, e.g. supplying, storing, conveying

Building tyres; devices for transferring annular tyre components during the building-up stage, e.g. from the first stage to the second stage building drum

Discharging moulded articles from the mould, using means operable from outside the mould between mould parts, e.g. robots

Informative references
Attention is drawn to the following places, which may be of interest for search:

Transport or storage devices, e.g. conveyers for loading or tipping; shop conveyer systems; pneumatique tube conveyers

{Handling tubes, e.g. transferring between shaping stations, loading on mandrels}
Definition statement
This subclass/group covers:

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US-A-3,849,052

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US-A-3,890,079

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References relevant to classification in this group
This subclass/group does not cover:

Conditioning or physical treatment of the material to be shaped, by heating hollow bodies, e.g. tubes or profiles

B29B13/00D2

Conditioning or physical treatment of the material to be shaped, by heating tube ends

B29D13/02D2B

Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow-moulding; handling means, e.g. transfer, loading or discharging

Shaping tubes or blown tubular films; turning tubes inside out

Producing tubular articles

Shaping by bending of tubes

Shaping of tube ends; e.g. flanging, belling, closing. Apparatus therefor

{Arrangements for converting the motion of a material which is continuously fed to a working station in a stepwise motion}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Advancing webs in general

Advancing webs; by looping or like devices

Shaping by thermoforming, handling means, e.g. transfer means, feeding means

{Handling moulds, e.g. between a mould store and a moulding machine ( movable moulds B29C 33/34 ; for injection moulding B29C 45/1756) }
Definition statement
This subclass/group covers:

e.g. storing moulds;

e.g. clamping mould halves outside the machine,

e.g. using a clamp for transporting.

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine

Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting

Injection moulding; handling of moulds or mould parts, e.g. mould changing means

-Producing contact lenses; auxiliary operations, e.g. conveying moulds from a storage to the production line in an inert atmosphere

- Moulds; mounting of moulds or moulds support plates

Movable moulds or cores, e.g. to or from the moulding station

Continuously movable moulds, in one direction, e.g. in a closed circuit

Presses, loading or unloading of dies, platens or press rams

{Handling preformed parts, e.g. inserts (B29C 37/001 takes precedence; for injection moulding B29C 45/14008 ; for blow moulding B29C 49/2408 ; for thermoforming B29C 51/165) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting; incorporating preformed parts or layers, e.g. casting around inserts or for coating articles

Compression moulding; incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles

Foaming; incorporating or moulding on preformed parts, e.g. inserts, reinforcements

Injection moulding; incorporating preformed parts or layers; inserting articles into the mould

Extrusion moulding; incorporating preformed parts or layers, e.g. extrusion moulding around inserts or for coating articles

Blow moulding; inserting labels or films into blow moulds, e.g. in-mould-labellers

Thermoforming; lining or labelling

Dispensing from vessels, e.g. hoppers { ( into a mould cavity B29C 31/04 ; large containers characterised by discharge means B65D 88/28 , B65D 88/54) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Methods or devices for filling or emptying bunkers, hoppers, tanks or like containers

B60G65/30

Injection moulding; feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit

Extrusion moulding, feeding the material to the extruder

Feeding {of the material to be moulded} , e.g. into a mould cavity ( {B29C 39/08 takes precedence; using a material distribution system to two or more fixed injection moulds B29C 45/125} ; to presses in general B30B 15/30)
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting; feeding the material into the mould

Shaping by coating; feeding the material on to the mould, core or other substrate

Shaping by casting; feeding the material into the mould

Compression moulding; feeding the material to the mould or the compression means

Foaming; feeding the material to be shaped

Injection moulding; feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit

Extrusion moulding; feeding the material to the extruder

Accessories for mixers, feed mechanisms

Feeding material in particulate or plastic state to moulding presses

Producing lenses, machine for filling the moulds

{using filling or dispensing heads placed in closed moulds or in contact with mould walls (B29C 45/27 takes precedence ) }
Definition statement
This subclass/group covers:

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{using dispensing heads, e.g. extruders, placed over or apart from the moulds ( positioning extruded preforms on conveyers B29C 31/085) }
Definition statement
This subclass/group covers:

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{with moving heads for distributing liquid or viscous material into the moulds}
Definition statement
This subclass/group covers:

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{moving along predetermined circuits or distributing the material according to predetermined patterns}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work; by relative movement according to a predetermined path

{combined with moving moulds (B29C 31/044 , B29C 31/048 take precedence ) }
Definition statement
This subclass/group covers:

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{the material being severed at the dispensing head exit, e.g. as ring, drop or gob, and transported immediately into the mould, e.g. by gravity}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Compression moulding; for articles of definite length; using movable moulds with circular movement; the material being fed in a continuous form

Compression moulding; feeding the material to the mould or the compression means

in measured doses, {e.g. by weighting ( feeding mixers with measured doses B01F 15/0216 , B01F 15/0454 , B29B 7/24 , B29B 7/603 ; in general G01F) }
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Mixing, kneading; continuous, with mechanical mixing or kneading devices; feeding in measured doses, e.g. proportioning of several materials: B29B 7/603.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding; feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit; feeding measured doses

{using stationary volumetric measuring chambers}
Definition statement
This subclass/group covers:

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{of the piston type}
Definition statement
This subclass/group covers:

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GB-2026378

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{using volumetric measuring chambers moving between a charging station and a discharge station}
Definition statement
This subclass/group covers:

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GB-2129363

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus requiring external operation and adapted at each repeated and indentical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container without regard to weight and to deliver it, with measuring chambers moved during operation

{using feed frames, e.g. for dry material}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding material in particulate or plastic state to moulding presses; by using feed frames or shoes with relative movements

For multi-layer articles

{of the piston type}
Definition statement
This subclass/group covers:

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GB-826,470

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of preforms {to be moulded, e.g. tablets, fibre reinforced preforms, extruded ribbons, tubes or profiles; Manipulating means specially adapted for feeding preforms, e.g. supports conveyers (B29C 31/066 , B29C 37/001 , B29C 43/085 take precedence ) }
Definition statement
This subclass/group covers:

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{combined with positioning the preforms according to predetermined patterns, e.g. positioning extruded preforms on conveyers (B29C 70/30 takes precedence; for building tyres B29D 30/08) }
Definition statement
This subclass/group covers:

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FR-A-982.282

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping composites; positioning reinforcements in a mould

of several materials
Definition statement
This subclass/group covers:

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Moulds or cores; Details thereof or accessories therefor
Definition statement
This subclass/group covers:

Moulds or dies being the tool used to shape the plastic parts in moulding processes in its desired form. A mould typically comprises a cavity to shape a plastic part.

Rolls used in continuous moulding processes

Making of moulds

Designing moulds.

Relationship between large subject matter areas

The scope of B29C 33/00 is limited to moulds for shaping substances being in a plastic state

Moulds for shaping other substances are not covered by this class, but by the class in their field of application

References relevant to classification in this group
This subclass/group does not cover:

Moulds for making tyres

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds for pressure die casting

Moulds for shaping clay or other ceramic products

Special rules of classification within this group

Moulds specific for a single moulding technology are classified in that technology: e.g. moulds for injection moulding B29C 45/26, moulds for blow moulding B29C 49/48.

Since the classification scheme present in B29C 45/00 is much more detailed, for reasons of search efficiency, classification in B29C 45/00 is preferred above a classification in B29C 33/00 in the case that both classifications would be applicable.

Synonyms and Keywords

In patent documents the following expressions/words" Mould"," mold" and "die" are often used as synonyms.

using liquids, gas or steam { ( tyre moulds with incorporated heating or cooling means using liquids, gas or steam B29D 30/0601) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

heating using liquids, gas or steam in presses

{Manufacturing moulds, e.g. shaping the mould surface by machining}
Definition statement
This subclass/group covers:

Making of moulds made out of a plastic substance. The application of the created mould, does not necessarily need to be in the field of B29C

References relevant to classification in this group
This subclass/group does not cover:

Making of moulds by metal processing

B22, B23, in particular B23P 15/24

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mould materials, implicitly disclosed by the process of making them

{with mechanical ejector or drive means therefor}
References relevant to classification in this group
This subclass/group does not cover:

Mechanical ejectors for injection moulding

{for stripping articles from a mould core, e.g. using stripper plates}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging by stripping articles from cores

Heating, cooling or curing, e.g. crosslinking, vulcanising; Apparatus therefor ( moulds with incorporated heating or cooling means B29C 33/02 ; { thermal after-treatment of shaped articles B29C 71/02} ; curing devices for plastic dental prostheses A61C 13/14 ; before moulding B29B 13/00 ; Chemical aspects C08J 3/00)
References relevant to classification in this group
This subclass/group does not cover:

Thermal after-treatment of shaped articles

Curing devices for plastic dental prostheses

Thermal treatment of the material to be shaped before moulding

{Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids (B29C 35/0294 takes precedence ) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding, heating or cooling of the mould, control circuit therefor

Moulds or cores with incorporated heating or cooling mean, using liquids, gas or steam

Heating or curing, e.g. crosslinking, vulcanising {during moulding, e.g. in a mould} ( coldvulcanisation B29C 35/18 ; { vulcanising tyres, presses therefor B29D 30/0601} )
Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting, heating or cooling

Shaping by coating, heating or cooling

Compression moulding, heating or cooling

Shaping by swelling, foaming, heating or cooling

Injection moulding, heating or cooling

Extrusion moulding, heating

Blow-moulding, heating or cooling

Shaping by thermoforming, heating or cooling

Shaping by bending, folding, heating or cooling

Lining or sheathing, heat treatment

Heating or cooling presses or parts therefor

Producing pneumatic tyres, vulcanising tyres, vulcanising presses for tyres

Moulds or cores with incorporated heating or cooling means

{using pressure vessels, e.g. autoclaves, vulcanising pans (B29C 35/065 takes precedence ) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping composites, using isostatic pressure, e.g. autoclave

Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter, pressure vessels, autoclaves

{Presses provided with pressure vessels, e.g. steam chambers}
Definition statement
This subclass/group covers:

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{using fluidised bed}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Chemical or physical process in general, conducted in the presence of fluids and solid particles, with fluidised particles, according to "fluidised bed" technique

{for articles of indefinite length}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Chemical or physical process in general, conducted in the presence of fluids and solid particles, with fluidised particles, according to "fluidised bed" technique, for treatment of endless filamentary, band or sheet material

{using friction}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining of preformed parts, by heating, using friction

{using ultrasonic or sonic vibrations}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining of preformed parts, by heating, using ultrasonic vibrations

Chemical, physical or physico-chemical processes in general, employing sonic or ultrasonic vibrations

{Local curing ( for repairing B29C 73/34) }
Definition statement
This subclass/group covers:

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{using lost heating elements, i.e. heating means incorporated and remaining in the formed article ( for preforms with internal stresses B29C 61/0625 ; joining using lost heating elements B29C 65/34 ; making electrically conductive articles B29C 70/882) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining of preformed parts, by heating, using heated elements which remain in the joint

Shaping by liberation of internal stresses, making preforms comprising incorporated or associated heating means

{Apparatus with continuous transport of the material to be cured (B29C 35/025 , B29C 35/06 , B29C 35/10 , B29C 35/14 take precedence ) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Movable moulds or cores

Continuously movable moulds or cores

{Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process ( controlling or regulating chemical, physical or physico- chemical processes in general B01J 19/0006) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting, measuring, controlling or regulating

Shaping by coating, measuring, controlling or regulating

Compression moulding, measuring, controlling or regulating Shaping by swelling, foaming, measuring, controlling or regulating

Injection moulding, measuring, controlling or regulating of temperature

Extrusion moulding, measuring, controlling or regulating

Blow-moulding, measuring, controlling or regulating

Shaping by thermoforming, measuring, controlling or regulating

{using tempering units for temperature control of moulds or cores}
Definition statement
This subclass/group covers:

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using liquids, gas or steam
Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining of preformed parts; e.g. welding of plastics materials; making use of hot liquids, i.e. the liquid is in contact with the material to be joined

Joining of preformed parts; e.g. welding of plastics materials; using hot gases

Joining of preformed parts; e.g. welding of plastics materials; using flames

{using liquids}
Definition statement
This subclass/group covers:

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for articles of indefinite length
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion moulding; heating the stream of extruded material

{in long tubular vessels}
Definition statement
This subclass/group covers:

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by wave energy or particle radiation { (B29C 67/0051 , B29C 71/04 take precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing optical elements, curing the lens material

Induction heating

Processes of treating or compounding macromolecular substances, treament by wave energy or particle radiation

Dental auxiliary appliances, apparatus for curing resin by radiation

Chemical, physical or physico-chemical processes in general, employing particle radiation or gamma-radiation

Chemical, physical or physico-chemical processes in general, employing electromagnetic waves

Irradiation devices

Using induction heating for welding

Using wave energy for welding

Using laser for welding

{using electromagnetic radiation}
Definition statement
This subclass/group covers:

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{using transparant moulds}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing optical elements, curing the lens material

Photomecanical, e.g. photolithographic, production of textured or patterned surfaces, lithigraphic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping

{provided with masks or diaphragms}
Definition statement
This subclass/group covers:

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for articles of indefinite length
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion moulding; heating the stream of extruded material

Dielectric heating
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds or cores with incorporated heating means for dielectric heating

Dielectric heating for welding

for articles of indefinite length
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion moulding; heating the stream of extruded material

B29C47/08B

Cooling { ( cooling extruded material B29C 47/8815 ; cooling preforms for blow moulding B29C 49/6427 ; cooling blown articles B29C 49/66 ; cooling tyres during post cure inflation B29D 30/0643) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion moulding, cooling the stream of extruded material

Blow-moulding, thermal conditioning of preforms by cooling hot or molten preforms

Blow-moulding; cooling by refrigerant introduced into the blown article

Moulds or cores with incorporated heating or cooling means

Component parts, details, accessories or auxiliary operations, not covered by group B29C 33/00 or B29C 35/00
Definition statement
This subclass/group covers:

Methods and processes for removing articles from the mould,

Applying surface layers to moulded articles during moulding, e.g. in mould coating,

Methods for compensating volume or shape change during moulding,

Method for degassing moulded articles during moulding (e.g. draining off gas during moulding),

Methods wherein separating agents are used during or after moulding,

Methods for obtaining anchoring effects between layers during moulding,

Method for trouble-shooting during starting or stopping moulding apparatus,

Methods for deburring or deflashing moulded articles.

Informative references
Attention is drawn to the following places, which may be of interest for search:

measuring or controlling heating, curing

detecting absence or presence of articles during injection moulding after ejection

detecting absence or presence of articles during welding

B29C65/00M9C6

dehumidifying moulds during injection moulding

measuring, controlling or regulating casting

measuring, controlling or regulating moulding by coating

measuring, controlling or regulating compression moulding

measuring, controlling or regulating foaming

measuring, controlling or regulating injection moulding

measuring, controlling or regulating extrusion

measuring, controlling or regulating blow moulding

measuring, controlling or regulating thermoforming

{Discharging moulded articles from the mould ( constructions for removing the articles B29C 33/44) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging casting moulds

Discharging coated moulds

Discharging compression moulds

Discharging injection moulds

Discharging blow moulds

Discharging thermoforming moulds

Demoulding optical elements, e.g. lenses

Producing tyres, loading or unloading tyres presses

{using means operable from outside the mould for moving between mould parts, e.g. robots}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging injection moulds, using means movable from outside the mould

{combined with means for loading preforms to be moulded or inserts, e.g. preformed layers}
Definition statement
This subclass/group covers:

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{by flexibly or permanently deforming undercut portions of the articles}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging injection moulds, by flexible movement of undercut article

{by stripping articles from mould cores}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds or cores with means for the removal of articles; with mechanical ejector or drive means for stripping articles from a mould core, e.g. using striper plates

{and using a rotating movement to unscrew articles ( in particular used in injection moulding B29C 45/178) }
Definition statement
This subclass/group covers:

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{Applying surface layers, e.g. coatings, decorative layers, printed layers, to articles during shaping, e.g. in-mould printing ( moulding on preformed layers as inserts B29C 70/68 ; applying fluent material to surfaces in general B05) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Compression moulding of definite length, incorporating preformed linings

Injection moulding, incorporating preformed parts or layers, multilayered articles

{In-mould coating, e.g. by introducing the coating material into the mould after forming the article}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding, making multilayered or multicoloured articles

{the coating being applied upon the mould surface before introducing the moulding compound , e.g. applying a gelcoat (B29C 44/14 and B29C 44/32 take precedence ) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by coating a mould, making multilayered or multicoloured articles of definite length

Injection moulding, making multilayered articles, applying surface layers inside the mould cavity, e.g. in mould coating (IMC)

{Compensating volume or shape change during moulding, in general}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting; compensating volume change, e.g. retraction

B29C39/4

Shaping by coating a mould or a core; compensating volume change, e.g. retraction

Compression moulding, compensating volume change, e.g. retraction

{Moulding articles characterised by the shape of the surface, e.g. ribs, high polish ( mould construction therefor B29C 33/42 ; surface shaping of articles B29C 59/00 ; by incorporating filler in or near the surface B29C 70/64) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds or cores characterized by the shape of the moulding surface, e.g. ribs, grooves

Shaping by casting, making articles of definite length characterised by the shape of the surface

Compression moulding of article of definite length chatracterised by the shape of the surface

B29C45/02B

Injection moulding, mould cavity walls provided with means for marking or patterning

Blow moulding moulds having decorating or printing means

Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces, lithographic processes using patterning methods other than those involing the exposure to radiation, e.g. by stamping

{Moulding single grooves or ribs, e.g. tear lines ( folding lines B29C 53/06) }
Definition statement
This subclass/group covers:

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{Degassing moulding material or draining off gas during moulding ( venting means in moulds B29C 33/10) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by casting; casting under special conditions, e.g. vacuum:

Degassing, draining off gases, as after treatment

Producing lenses, removing oxygen from the mould

{of reinforced material}
Definition statement
This subclass/group covers:

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{Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other ( separating agents B29C 33/60) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds or cores, coatings, applying the releasing agent

Moulds or cores, coatings, releasing, lubricating or separating agent

{Dusting machines}
Definition statement
This subclass/group covers:

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{using release sheets}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Release sheets for moulds or cores

{Measures or configurations for obtaining anchoring effects in the contact areas between layers ( surface shaping B29C 59/00 ; B29C 66/02 takes precedence ) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping composites, comprising fillers only, the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force

{Mechanical anchoring (B29C 66/303 takes precedence ) }
Definition statement
This subclass/group covers:

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{by means of openings in the layers ( joining through openings B29C 66/304) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Joining by riveting

Injection moulding in or through a hole in the article

{Sealing devices placed between articles and treatment installations during moulding or shaping, e.g. sealing off the entrance or exit of ovens or irradiation rooms, connections between rooms at different pressures}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Sealings between relatively moving surfaces which permits material to be continuously conveyed

{Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Drying in general

Deburring or deflashing ( by grinding or polishing B24B) { ( thermal deburring in general B23D 79/005) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Machines or devices designed for grinding edges or bevels on works or for removing burrs characterised by a special design for grinding plastic materials

Methods for use of abrasive blasting for polishing surfaces for deburring

B24C/08B

Abrasive blasting machines or devices

Cutting work characterised by the nature of the cutting made

B29D3/00

Machines or devices designed for polishing or abrading surfaces on work by means of tumbling appartus

B24D31/00

Method, machines, or devices for working metals by removal of material for thermal deburring

B23D 79/005, B29D79/02B1B

Blow-moulding; deflashing outside the mould; deflashing the neck portion

Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor (B29C 41/00 takes precedence )
Definition statement
This subclass/group covers:

Low or zero pressure casting methods of polymers or their pre-cursors into a mould or between confining surfaces, apparatus and articles obtained by casting, when these articles are characterised by the casting method.

References relevant to classification in this group
This subclass/group does not cover:

Casting of membranes,

Centrifugal casting specially adapted for tyres or parts thereof

Spin casting

Casting of dental prostheses

Casting of microstructured devices

Informative references
Attention is drawn to the following places, which may be of interest for search:

Metal casting

Casting of ceramics or other cementitious material

Shaping by internal pressure generated in the material, e.g. swelling, foaming

Joining by applying molten plastics or by moulding

Screen moulding

Encapsulating inserts having non-encapsulated projections, e.g. terminal portions of electrical components

Designs imitating natural patterns

Encapsulating hollow fibres, e.g. for filters,

Encapsulation, potting and similar processes used in electronics

Making brushes by casting a body around bristles

Methods for making crowns for teeth

Moulding sealings into closures

Spinning of moulds for a specific filler concentration or distribution of the filler

Liquid injection molding of liquid silicone rubbers, polyurethanes and other highly reactive materials under high pressure

Casting of foodstuff or confectionary

Moulding, e.g. casting of optical elements, e.g. lenses, prisms

Molding wax

Manufacture of films or sheets

Casting cosmetic material, such as lipsticks

Synonyms and Keywords

In patent documents the following expressions/words "casting", "moulding", "pouring", "potting" and "encapsulating" are often used as synonyms.

Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor ( with compacting pressure B29C 43/00 ; { by lay-up of reinforcement of substantial or continuous length B29C 70/30} )
Definition statement
This subclass/group covers:

depositing material and stripping-off the shaped article

Relationship between large subject matter areas

Processes for applying liquids or other fluent materials are provided in B05D 1/00 e.g. coating by rotation: B05D 1/002; coating by spin coating B05D 1/005; coating by dipping B05D 1/18; coating performed by gravity only B05D 1/30.

The difference with the processes provided in the group B29C 41/00, is that in addition to coating step, a step of stripping of the article is provided (cf. the title of B29C 41/00 "...i.e. by depositing material and stripping-off the shaped article...")

References relevant to classification in this group
This subclass/group does not cover:

Shaping by spraying of fibres on a mould, former or core:

Informative references
Attention is drawn to the following places, which may be of interest for search:

Spinning the mould for a specific filler concentration or distribution

Automotive skins

Gloves

Synonyms and Keywords

In patent documents the following expressions are often used as synonyms:

spraying, slush moulding or casting, rotational moulding, rotomoulding, moulding by spinning, spin casting, centrifugal casting.

Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor ( { by libertion of internal stresses B29C 61/006} ; shaping or impregnating by compression composites comprising reinforcements other than fibres of short length [ B29C 70/12 ]; presses in general B30B)
Definition statement
This subclass/group covers:

Compression moulding refers to shaping polymeric materials by using moulding devices movable against the material to apply pressure for shaping;

continuous compression moulding refers to making indefinite articles by using rotatable devices, e.g. wheels, rollers, calenders;

devices to supply the material to the compression moulding device

References relevant to classification in this group
This subclass/group does not cover:

Injection compressing moulding (i.e. injecting the polymeric material under pressure in a usually open mould and subsequently moving the mould or mould parts to compress the material to achieve the final shape)

Synonyms and Keywords

In patent documents the expression "compacting" is often used with the meaning "compression moulding".

{characterised by the choice of material}
Definition statement
This subclass/group covers:

compression moulding processes characterised by the choice of material, e.g. using organic, inorganic or mineral fillers or fibres, using plasticised particulate materials bonded by resin, recycled materials

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding processes characterised by the choice of the material, e.g. wax, aggregates:

Pressing of glass:

Making brake linings:

F16D 69/00, R16D200/260D

{Pressing and sintering powders, granules or fibres}
Definition statement
This subclass/group covers:

e.g. pressing fleeces made of thermoplastic fibres;

hot-fusion under pressure particles, granules or fibres etc, particles are heated and compressed to partial melt and bond together; thermal bonding under pressure; shaping monoliths

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding processes characterised by the choice of mineral aggregates bonded with resin as the moulding material

Making brake linings

F16D 69/00, R16D200/260D

Sintering (without pressure)

Surface fusion and bonding of particles to form voids

Sintering metallic powders

Partial melting of one or more layers to form the bond

B32B31/00B1

Preheating powders

Sintering fibres

Prostheses

{characterised by the shape of the surface}
Definition statement
This subclass/group covers:

making articles characterised by the shape of the surface

Informative references
Attention is drawn to the following places, which may be of interest for search:

Surface shaping

Decorative arts

Embossing machines

Imprinting

Folding lines

Grooves

Moulding of lenses

Moulding of Fresnel lenses

Fresnel lenses

Fine patterning magnetic record carriers

Optical record carriers

Masters, stampers:

Packages or encapsulation of micro-structural systems

Processes for packaging: MEMS

Lithographic processes using stamping

Making masks on semiconductor bodies

Apparatus for mechanical treatment of semiconductors

H01L21/00S2F

Laminating circuit boards

Apparatus for making LCD's

S02F1/133A

Manufacturing printed circuits

{having an axis of symmetry (B29C 43/102 takes precedence ) }
Definition statement
This subclass/group covers:

compression moulding symmetrical articles, e.g. balls, ring-like shaped articles, tubular articles

Informative references
Attention is drawn to the following places, which may be of interest for search:

Making spherical articles e.g. balls

Apparatus or methods for manufacturing balls

Moulded articles with a profiled transverse cross-section

B29L31/00B4

Ring or ring-like shaped moulded articles

B29L31/7096

using movable moulds
Definition statement
This subclass/group covers:

movable moulds with the movement being other than open, closing, clamping, or pressurising, e.g. for curing in a closed mould outside the pressure exerting means, transferring moulds or mould parts between a feeding and a compressing station

Informative references
Attention is drawn to the following places, which may be of interest for search:

Handling of moulds in general

Movable moulds in general

Movable moulds for injection moulding

Movable moulds for blow moulding

continuously movable {in one direction, e.g. mounted on chains, belts}
Definition statement
This subclass/group covers:

e.g. moulds or mould parts travelling continuously along a path

with circular movement {e.g. mounted on rolls, turntables}
Definition statement
This subclass/group covers:

moulds or mould parts mounted on rotating supporting constuction, rotary machines, e.g. turntables, drums, carousels, star wheels

Informative references
Attention is drawn to the following places, which may be of interest for search:

For presses

For injection moulding

For blow moulding

Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies { ( in general B30B 11/001) }
Definition statement
This subclass/group covers:

flexible pressure exerting means, e.g. material characteristics of the pressure exerting member (e.g.special density, composition, syntactic foam)

Informative references
Attention is drawn to the following places, which may be of interest for search:

Flexible collapsible moulds for facilitating demoulding

Vacuum bagging

Flexible pressing means

Membrane presses

Applying pressure through membranes

Bladders for making tires

Vacuum laminating

Laminating glas sheets

Hydroforming

B21D26/02H

using bags surrounding the moulding material {or using membranes contacting the moulding material (B29C 70/44 takes precedence; flexible cores for vulcanizing tyres B29D 30/0654) }
Definition statement
This subclass/group covers:

e.g. compression moulding processes by using vacuum or inflatable bags

of articles of indefinite length { ( for articles with reinforcements of substantial or continuous length B29C 70/50) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Floor coverings obtained by sintering or glueing the granules together

Calendering
Definition statement
This subclass/group covers:

e.g. measuring and regulating calender banks

Component parts, details or accessories; Auxiliary operations
Definition statement
This subclass/group covers:

e.g. pressure exerting means or methods (mechanical e.g. deformable nets, springs or non mechanical e.g. thermal expansion) e.g. pressure equalising means or methods

References relevant to classification in this group
This subclass/group does not cover:

Shaping by using the force created by the liberation of internal stresses to exert pressure B29C 61/006; Bags for isostatic pressure B29C 43/3642; Material characteristics of the isostatic pressure exerting member B29C 43/10

Feeding the material to the mould or the compression means { (B29C 43/085 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding of the material to be moulded in general

for undercut articles
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds for moulding articles provided with holes in general

Moulds for undercut articles in general

Manufacture of work pieces or articles provided with cavities or holes from metallic powder

Compression means for making articles of indefinite length
Definition statement
This subclass/group covers:

e.g. exchanging rollers or belts;

e.g. exchanging the coating of rollers;

e.g. adjusting rollers;

Informative references
Attention is drawn to the following places, which may be of interest for search:

driving arrangements for rollers

Rollers
Informative references
Attention is drawn to the following places, which may be of interest for search:

rollers with deflection compensating systems, e.g. hydraulic systems

F16C13/00B

rollers for mixing plastic material to be shaped

Heating or cooling
Informative references
Attention is drawn to the following places, which may be of interest for search:

presses plates with heating or cooling means

Compression moulding under special conditions, e.g. vacuum
Definition statement
This subclass/group covers:

e.g. compression moulding using vibrations;

e.g. compression moulding while steaming

Measuring, controlling or regulating { ( for bank adjustment in calendering B29C 43/245) }
Definition statement
This subclass/group covers:

e.g. regulating compression force, by changing according to a predetermined program

References relevant to classification in this group
This subclass/group does not cover:

measuring and regulating calender parameters, e.g. bank quantity

Shaping by internal pressure generated in the material, e.g. swelling, foaming; {Producing porous or cellular expanded plastics articles}
References relevant to classification in this group
This subclass/group does not cover:

Chemical aspects of foaming

Informative references
Attention is drawn to the following places, which may be of interest for search:

Metal foams

Ceramic foams

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

reticulated

cell wall membranes are removed, leaving a framework only.

Synonyms and Keywords

In patent documents the expressions "foaming" is often used with the meaning "expanding" and "swelling".

consisting of at least two parts of chemically or physically different materials, e.g. having different densities
Definition statement
This subclass/group covers:

e.g. a soft, porous core covered by a skin or lining when they are made in the same procedure

References relevant to classification in this group
This subclass/group does not cover:

incorporating preformed parts

{Filling flexible bags not having a particular shape}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Filling cushion pads

{Sealing off parts of the cavities}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Insulating elements for vehicles

Foam in superstructures for vehicles

for articles of indefinite length
Definition statement
This subclass/group covers:

continuous processes, even if it is followed by a subdivision into separate articles

{Heating or cooling}
Definition statement
This subclass/group covers:

particular characteristics of the heating or cooling method

{Making or treating expandable particles}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Making granules

under-water, e.g. underwater pelletizers

Feeding moulds with granules

{in the form of expandable granules, particles or beads}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Making or treating expandable particles

After-treatment of articles, e.g. for altering the shape
Definition statement
This subclass/group covers:

Characteristics of methods for working on an already foamed object

{Shaping and joining components with different densities or hardness}
Definition statement
This subclass/group covers:

e.g. putting a foam layer and a lining in a mould, followed by compression moulding and joining

{with means for venting, e.g. releasing foaming gas}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulds with venting means

Venting of moulds in general

Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor ( injection blow-moulding B29C 49/06)
Definition statement
This subclass/group covers:

Injection moulding methods

Injection moulding apparatuses

Articles obtained by injection moulding, as far as these articles are characterised by the injection moulding method

References relevant to classification in this group
This subclass/group does not cover:

Reaction injection moulding, liquid injection moulding

Special rules of classification within this group

It is desired to identify the obtained articles and the applied materials by allocating the appropriate Indexing Codes as provided in the subclass B29K and B29L.

Particular attention should be paid to the break down Indexing Codes, that are available only at additional informative level.

{characterised by the choice of material}
Definition statement
This subclass/group covers:

Injection moulding processes characterised by the plastic material. The group contains documents concerning injection moulding with a special material or a process adapted for a certain material.

References relevant to classification in this group
This subclass/group does not cover:

Injection moulding characterised by the use of fibres.

Injection moulding characterised by the use of fillers

{of successively moulded portions rigidly joined to each other}
Definition statement
This subclass/group covers:

Injection moulding processes of continuous or endless articles.

EP847112, fig 7,

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EP826475 fig 1c.

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Special rules of classification within this group

Although this group covers a combination of several injection steps, the documents are not classified in B29C 45/16

{using fibre reinforcements}
Definition statement
This subclass/group covers:

Injection moulding processes, whereby the fibres are dispersed in the plastic material. The dispersion is usually randomly.

Example EP893228

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Coating reinforcement

Coating fibrous material or fibre containing material

Resin transfer moulding

Injection moulding with short fibres

(Japanese F-term) 4F206/AB25

Injection moulding with long fibres

(Japanese F-term) 4F206/AD16

{using fillers dispersed in the moulding material, e.g. metal particles}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping composites comprising fillers only

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Fillers

relatively inert substances in the form of particles, powder, beads, flakes or spheres, which improve the physical properties or increases the bulk or weight of an article and are randomly dispersed in the material, e.g. additives, dyestuff, colouring material, recycled material

{moulding interconnected elements which are movable with respect to one another, e.g. chains or hinges}
Definition statement
This subclass/group covers:

Moulding of movable interconnected elements in a two step moulding process, without applying inserts.

EP159614, fig 5

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WO0189795, fig 7,8,10

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Metal casting of rotational elements:

Manufacturing of ventilating devices:

Special rules of classification within this group

Documents contained in this group are NOT additionally classified in B29C 45/16 and/or B29C 45/26

{Preventing defects on the moulded article, e.g. weld lines, shrinkage marks ( preventing defects on the preformed parts or layers B29C 45/14836) }
Definition statement
This subclass/group covers:

Moulding processes to avoid the occurrence of burrs, sink marks, warping, location of gate marks or the like on the moulded article

EP508732, fig 8

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References relevant to classification in this group
This subclass/group does not cover:

Applying external gas moulding technology for avoiding shrinkage marks

Informative references
Attention is drawn to the following places, which may be of interest for search:

Compensation volume change during moulding

Details relating to the flow path during moulding

{Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity}
Definition statement
This subclass/group covers:

Moulding processes concerning the filling pattern of flow characteristics. Typically this is related to the moulding of parts having thin and thick sections, e.g. for avoiding weld lines.

EP749821 fig 4

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EP666159 fig 1, relates to filling, flow patterns.

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EP362648, fig 6

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Preventing defects on the moulded articles

Special rules of classification within this group

Documents are classified in B29C 45/0046 only, if the inventions concerns only the filling pattern.

Documents are classified in B29C 45/0025 and B29C 45/0046, if the inventions concerns the relation between the filling pattern and the weld line.

{combined with a final operation, e.g. shaping ( injection-compression moulding B29C 45/561) }
Definition statement
This subclass/group covers:

e.g. irradiation

US20100156007 figure 1,

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addition of an insert

EP495219, fig 2

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References relevant to classification in this group
This subclass/group does not cover:

Post thermal treatment of articles

Informative references
Attention is drawn to the following places, which may be of interest for search:

In-mould coating

{Shaping}
Definition statement
This subclass/group covers:

Moulding processes comprising a shaping step after moulding.

Shaping refers to after treatment by mechanical means, e.g. bending, cutting, drilling, punching.

EP546950 shows in fig 1 & fig 2 a bending step.

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EP381023

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{Joined by injection moulding}
Special rules of classification within this group

Documents classified in this group are not additionally classified in B29C 45/16

{of objects with parts connected by a thin section, e.g. hinge, tear line}
Definition statement
This subclass/group covers:

Moulding processes, whereby the thin section is part of the moulded material

EP775639, figures 3, 4.

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References relevant to classification in this group
This subclass/group does not cover:

Using movable wall parts for making orifices in or through the moulded article

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding single grooves, ribs, e.g. tear lines in general

{Reciprocating the moulding material inside the mould cavity, e.g. push-pull injection moulding}
Definition statement
This subclass/group covers:

Moulding processes whereby the material is ´swung´ between several positions in/around the cavity. The material flow is not limited to one direction.

EP188120 figures 2 & 3

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EP442255 fig 3,4.

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References relevant to classification in this group
This subclass/group does not cover:

Applying vibration to mould parts

{General arrangement or lay-out of plants (B29C 45/1468 takes precedence ) }
Definition statement
This subclass/group covers:

Plants showing several working positions or operations, e.g. EP576196

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Lay out of plants, e.g.

EP765726

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DE19634843, fig 4.

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References relevant to classification in this group
This subclass/group does not cover:

Plants for encapsulating articles mounted on a carrier, e.g. lead frame

Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
Definition statement
This subclass/group covers:

Transfer moulding, whereby a shot cavity is provided within the mould. The material is transferred from the shot cavity into the mould cavity/cavities. The plunger is also part of the mould, the transfer takes place within a closed mould.

EP646948, fig 3.

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Relationship between large subject matter areas

The difference between transfer moulding and compression moulding, is that in case of the latter, the material is compressed while closing the mould and not by separate mould parts after closing.

A typical example of compression moulding

EP510414, fig 3 & 4

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References relevant to classification in this group
This subclass/group does not cover:

Resin transfer moulding

Informative references
Attention is drawn to the following places, which may be of interest for search:

Compression moulding with pressing members independently movable of the parts for opening and closing the mould

{Plunger drives; Pressure equalizing means for a plurality of transfer plungers}
Definition statement
This subclass/group covers:

Drives or pressure equalizing means.

JP5329870, hydraulic chamber 9.

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EP0778116

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Injection moulding apparatus ( transfer moulding B29C 45/02)
Definition statement
This subclass/group covers:

The configuration of the injection moulding apparatus

EP34203, fig 3.

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References relevant to classification in this group
This subclass/group does not cover:

Injection apparatuses combining the feeding means with opening, closing or clamping means

{Injection pistols}
Definition statement
This subclass/group covers:

Mainly hand-held injection moulding machines

US2995159

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Spray-up equipment for coating a mould, a core or other equipment:

Hand tools for applying fluid in general

using movable moulds {or mould halves} (B29C 45/08 takes precedence )
Definition statement
This subclass/group covers:

EP0268174

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References relevant to classification in this group
This subclass/group does not cover:

Movable moulds for making multilayered or multicoloured articles

{involving at least a linear movement (B29C 45/0433 takes precedence ) }
Definition statement
This subclass/group covers:

US20060172039

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{co-operating with fixed mould halves}
Definition statement
This subclass/group covers:

DE29517714U

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{mounted on a conveyor belt or chain}
Definition statement
This subclass/group covers:

EP0577169

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{involving a rotational movement (B29C 45/06 takes precedence ) }
Definition statement
This subclass/group covers:

DE10120267

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EP351895, fig 9/10.

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References relevant to classification in this group
This subclass/group does not cover:

Rotatable moulds or mould halves mounted on a turntable

{mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction}
Definition statement
This subclass/group covers:

EP42012

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Synonyms and Keywords

In patent documents the expression "circumference" is often used with the meaning "surface "

{mounted} on a turntable {i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction}
Definition statement
This subclass/group covers:

Injection moulding machines comprising a turntable, being a horizontal moving table with complete moulds or mould halves (the mould halves are covered by B29C 45/062). The rotation axis is normally parallel to the open/closing axis of the moulds.

WO9739870

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,

EP0529940

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Turntables for presses

{carrying mould halves co-operating with fixed mould halves}
Definition statement
This subclass/group covers:

EP300068 fig 1

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US20060177539

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using movable injection units
Definition statement
This subclass/group covers:

Injection moulding processes, whereby EACH moulding cycle, the injection unit is MOVED and removed.

US3924994, fig 1& 2.

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{cooperating with two or more moulds}
Definition statement
This subclass/group covers:

EP438721 fig 1,2 position A & B

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moving with the mould during the injection operation
Definition statement
This subclass/group covers:

Injection moulding processes, whereby the injection unit and the mould move at the same time. FR2155808 dashed line 5

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using moulds or injection units usable in different arrangements or combinations to each other
Definition statement
This subclass/group covers:

Different arrangements or combinations concerning the mould AND the injection unit.

Different arrangement of the mould and injection unit DE2543448, fig 1 & 2

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Different combination of the mould and injection unit EP138169, fig 1 & 2

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Note that the different arrangement or combination are not related to one moulding cycle but to a long period of use.

References relevant to classification in this group
This subclass/group does not cover:

Moulds in different combinations

using two or more fixed moulds, e.g. in tandem { (B29C 45/076 takes precedence ) }
Definition statement
This subclass/group covers:

The INJECTION UNIT cooperates with BOTH MOULDS through a runner channel.

EP326175, figure 16

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Stack moulds

{using a material distributing system}
Definition statement
This subclass/group covers:

EP265603 fig 1

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EP13118 fig 2,

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WO9702126 fig 2.

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using two or more injection units co-operating with a single mould
Definition statement
This subclass/group covers:

Several injection units, typically for quickly filling one mould.

FR2381616, figure 1

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US2293304, figure 1

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Multi-component injection moulding

incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles { (B29C 45/1671 takes precedence ) }
Definition statement
This subclass/group covers:

EP492052 fig 1 & 2, label A.

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Synonyms and Keywords

In the patent documents the following expressions "inserts","preformed parts", "articles", "films" and "preformed layers" are often used as synonyms.

{Inserting articles into the mould (B29C 45/14827 takes precedence ) }
Definition statement
This subclass/group covers:

Usually robots for inserting the to be overmoulded articles into the mould cavity

EP373023, figure 1

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Relationship between large subject matter areas

Attention is being paid to the difference between B29C 45/14008 and B29C 45/14065, B29C 45/14008 concerns the inserting of the articles INTO the mould. B29C 45/14065 concerns the positioning of the already inserted article WITHIN the mould (cavity).

Informative references
Attention is drawn to the following places, which may be of interest for search:

Handling of preformed parts in general

Feeding of linings or labels for thermoforming

Inserting labels or films into blow moulds

Locating or holding inserts in metal casting

Orienting articles in an article feeder for assembling machines

{Intermittently feeding endless articles, e.g. transfer films, to the mould (B29C 45/14262 takes precedence ) }
Definition statement
This subclass/group covers:

Non-continuous feeding of a film

EP101095, fig 2

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{and punching or cutting a portion from the endless articles during mould closing}
Definition statement
This subclass/group covers:

EP231670, punch mechanism 3

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{Transferring the inserts from a storage space inside the mould to the mould cavity}
Definition statement
This subclass/group covers:

EP37032 fig 3 & 4.

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Inserts are introduced in storage space 10 inside the mould and when the mould is closed, one insert is transferred each moulding cycle by transfer means 27.

{Positioning or centering articles in the mould}
Definition statement
This subclass/group covers:

EP257681 pin 110 in fig 11(means are here part of the insert)

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Relationship between large subject matter areas

Where B29C 45/14008 concerns the inserting of the insert INTO the mould, B29C 45/14065 concerns the positioning or centering in the cavity of the already inserted insert.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with incorporated means for centering inserts in general

Moulds using vacuum to position inserts in general

Moulds using magnetic means for positioning inserts in general

{using means being retractable during injection}
Definition statement
This subclass/group covers:

EP257681, retracting pins

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{the inserts being deformed or preformed, e.g. by the injection pressure}
Definition statement
This subclass/group covers:

EP782908 insert S

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping linings by compression of the moulding material

{the inserts being positioned around an edge of the injected part}
Definition statement
This subclass/group covers:

Moulding of edge wrapped articles

Informative references
Attention is drawn to the following places, which may be of interest for search:

Lining or sheeting by folding, winding, bending or the like

{by tools, e.g. cutting means}
Definition statement
This subclass/group covers:

Deformation by mechanical means

EP721831, fig 1-3,

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EP592768, fig 1,

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P517614, parts 11a, fig 1

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References relevant to classification in this group
This subclass/group does not cover:

Deformation by injection pressure

{using means for bonding the coating to the articles (B29C 45/14795 takes precedence ) }
Definition statement
This subclass/group covers:

Bonding means, e.g. adhesives, chemical means, locking configurations

EP976519, perforation in fig 2.

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Measures or configurations for obtaining an anchoring effect in contacting areas general

{Coating a portion of the article, e.g. the edge of the article (B29C 45/14573 and B29C 45/14598 take precedence ) }
Definition statement
This subclass/group covers:

Moulding processes, whereby a part of the insert is outside the cavity during the moulding process. EP1013392 fig 7, insert 4, coating 6 & 8

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EP727289, only handle of the insert

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References relevant to classification in this group
This subclass/group does not cover:

Coating a portion of tubular articles

Coating the edge of articles at spaced locations

{Moulding in or through a hole in the article, e.g. outsert moulding}
Definition statement
This subclass/group covers:

outsert moulding: EP65220, insert 8 is, at least partially OUTSIDE the moulding material 14

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding in general on a relative small portion of the preformed part e.g. outsert moulding

Permeable inserts

{using an additional insert, e.g. a fastening element}
Definition statement
This subclass/group covers:

The use of an additional fastening element in combination with partial coating of an insert only (note: B29C 45/14467 takes precedence)

EP468713, fig 2 insert 2 and additional fastening means 12

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EP436438 with additional fastening means 22 & 27 (fig 2 & 3).

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding in general on a relative small portion of preformed parts to be joined

{Coating a portion of a bundle of inserts, e.g. making brushes}
Definition statement
This subclass/group covers:

EP676268

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding or casting a brush body around bristles or tufts

Brushes characterised by mouldable materials for fixing the bristles

{Coating profiles or strips by injecting end or corner or intermediate parts}
Definition statement
This subclass/group covers:

GB1431460, fig 2 corner 5;

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US4778550 end part 22

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{Sealing means between mould and article}
Definition statement
This subclass/group covers:

The application of separate sealing means, as well as sealing by mould parts, e.g. core mould and cavity walls

EP0845340-fig 4, seals 140 & 142,

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JP63-67127, sealing members 3 & 4

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JP63-89313, seals 6a & 6b,

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Sealing means for sealing off parts of the insert during moulding in general

{Coating brittle material, e.g. glass (B29C 45/14377 , B29C 45/14418 take precedence ) }
Definition statement
This subclass/group covers:

Moulding on glass inserts

Moulding on windscreens, whereby the windscreen is not made out of the brittle material glass, but out of a transparent plastic.

{Joining articles or parts of a single article (B29C 45/14377 , B29C 45/14385 , B29C 45/14581 , B29C 45/14614 and B29C 45/006 take precedence ) }
Definition statement
This subclass/group covers:

EP792960, fig 2 parts 1 & 7, connected by material 10

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References relevant to classification in this group
This subclass/group does not cover:

Joining articles moulded in separate cavities as final operation

Joining tubular articles

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding in general on preformed parts to be joined

Joining of preformed parts by moulding

Joining preformed parts by the expansion of the moulding material

Casting around parts for joining

Key-type connections formed by solidification of injected material

{Joining juxtaposed parts of a single article, e.g. edges of a folded container blank}
Definition statement
This subclass/group covers:

FR2272816 fig 1 & 2

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GB1360801 fig 1 part 5

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Machines for making boxes by folding sheets combined with injection moulding for joining opposed edges

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Juxtaposed

is being defined as lying next to each other within the same plane, while the juxtaposed parts touch each other along one edge

{Injecting material between coaxial articles, e.g. between a core and an outside sleeve for making a roll}
Definition statement
This subclass/group covers:

WO0024561, fig 2, parts 31 and 33 connected by plastic 29

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{Joining juxtaposed sheet-like articles, e.g. for making trim panels}
Definition statement
This subclass/group covers:

EP953423 fig 1-3, articles 11-13

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EP376263, fig 4, sheets 1a, 1b.

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EP829337 fig 6 & fig 10.

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{Coating rod-like, wire-like or belt-like articles (B29C 45/14426 takes precedence ) }
Definition statement
This subclass/group covers:

EP719628, figure 1, rod like insert 21

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EP33848, figure 5 insulator insert 11

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WO9107934, figure 3.

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Assembly methods and manufacture of light guides

{at spaced locations, e.g. coaxial-cable wires}
Definition statement
This subclass/group covers:

EP225846, fig 4 wire 3, several plastic locations 21

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.

EP221851, fig 6. Insert 1, plastics 22,23

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{Coating the edge of the article, e.g. for slide-fasteners}
Definition statement
This subclass/group covers:

EP641637 Insert 1, 24 at THE EDGE, at SPACED LOCATIONS.

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing fasteners with separate interlocking members

Pressure die casting of slide fasteners

{Coating the cross-over points of articles in the form of a network}
Definition statement
This subclass/group covers:

GB1128619 Inserts 20 & 20, plastic 18,

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FR1435472, figure 2, wire 11 & 21, plastic 20

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{Coating annular articles}
Definition statement
This subclass/group covers:

Insert moulding processes for making rollers, wheels, bearings, tyres

EP712708 fig 1. Insert 21 & 22 - annular cavity C.

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EP287495, fig 1. Retreading of a tyre.

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing roller bodies

Guiding rollers, wheels or the like formed by or on the outer element of a single bearing

Assembling wheels on an axle for making a castor

{Coating tubular articles}
Definition statement
This subclass/group covers:

US6210621, fig 4- 6 Part 61 is moulded onto part 8d.

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EP810073, fig 12

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding on the end part of tubular articles in general

Producing rollers of cylinders

Special rules of classification within this group

Note that although the article is often coated only partly, the classification is only done in B29C 45/14598, since it takes precedence over B29C 45/14336

{Joining tubular articles}
Definition statement
This subclass/group covers:

EP79575, fig 1 & 2. Plastic 12 and 14 connect the tubes 1, 2 and 3.

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{Lining the inner or outer surface of tubular articles}
Definition statement
This subclass/group covers:

WO9317847, fig 1-6, tubular article 12, core inside for pressure compensation, lining 30

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{Coating reinforcements ( fibre reinforcements B29C 45/0005) }
Definition statement
This subclass/group covers:

Overmoulding of reinforcements, being an insert not forming a part of the moulding material before the moulding process:

e.g. overmoulding single wires or fibres, overmoulding metal parts used as reinforcement.

EP487476

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EP439033

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Incorporating articles with special properties

Resin transfer moulding

Injection moulding using fibre reinforced plastics

{for obtaining an insulating effect, e.g. for electrical components}
Definition statement
This subclass/group covers:

Overmoulding only when the disclosed moulding process is of importance due to the potentially very wide scope of possible applications (see also the informative references).

EP446489, fig 11

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Informative references
Attention is drawn to the following places, which may be of interest for search:

IC or chip cards

Plugs, electric contacts

Transformer, windings

Machine engines, motors

Cables, conductors

Repairing electric cables, joints, connectors

Assemblies

LEDs

Sealed casings

Capacitors

H01G 13/00, H01G1/10

Resistors

{Making flat card-like articles with an incorporated IC or chip module, e.g. IC or chip cards}
Definition statement
This subclass/group covers:

Moulding processes, whereby the chip is embedded during the moulding process.

EP481557

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting details of chip cards in general

Identity cards and the like

{connected to or mounted on a carrier, e.g. lead frame}
Definition statement
This subclass/group covers:

EP489349, fig 4, chip 22, lead frame 18. Runner 412 & Gate 416, 418. The moulding step in this group usually concerns transfer moulding.

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Relationship between large subject matter areas

The scope of this group is small in comparison to a typical related product group like H01L 21/565, since B29C 45/14655 is limited to disclosures related to the moulding process as such.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds for encapsulating semi-conductors

Apparatus for sealing, encapsulating for manufacturing or treating semiconductor or solid state devices

{Plants therefor}
Definition statement
This subclass/group covers:

EP825006, fig 1. Loading, unloading, etc.

media315.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Plants in general

{Coating articles provided with a decoration}
Relationship between large subject matter areas

In B29C 45/14688, the insert is the decoration itself or the insert comprises a decoration and nothing more.

In the case with a plurality of layers where the decoration layer is one of them, the classification is B29C 45/14811

Furthermore, typical for B29C 45/14688 is that the moulding process is adapted or optimised for coating articles with a decoration.

Standard film overmoulding is classified B29C 45/14778, even if the film is provided with a decoration.

WO98/09790, fig 2 & 5, insert 18 and plastic 28.

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References relevant to classification in this group
This subclass/group does not cover:

Incorporating decorated single layer or multi layered films by standard moulding processes

Applying transfer foils

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Decoration

A film provided with ink, paint or like means to create a decorative effect or information.

{being in movable or releasable engagement with the coating, e.g. bearing assemblies}
Definition statement
This subclass/group covers:

Overmoulding inserts that can move relatively to the plastic after finishing the moulding process. Typically applied for making bearings and to preventing adhesion.

EP27770, insert 37 and plastic 16.

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{the article consisting of a material with particular properties, e.g. porous, brittle}
Definition statement
This subclass/group covers:

E.g. moulding on films

Special rules of classification within this group

In this group, it is of upmost importance that the material, condition or the property of the insert is identified by allocating the appropriate Indexing Code as provided in the subclass B29K

{Fibrous material or fibre containing material, e.g. fibre mats or fibre reinforced material}
Definition statement
This subclass/group covers:

Moulding processes whereby inserts are coated, but not impregnated

EP547625, insert 13 is not completely impregnated but coated at only one side

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JP5269785

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Relationship between large subject matter areas

The difference between B29C 45/14786 and resin transfer moulding (B29C 70/48) is the way of coating.

In the group B29C 45/14786, the fibrous insert is not completely impregnated but coated at only one side.

A process, whereby an insert of fibrous material is complete impregnated refers to resin transfer moulding, even if the process is done by injection moulding.

Coating of single fibres/wires is classified B29C 45/14631

Informative references
Attention is drawn to the following places, which may be of interest for search:

Resin transfer moulding

Coating reinforcement

{Porous or permeable material, e.g. foam}
Definition statement
This subclass/group covers:

EP743155 fig 8a-8d, directly injection on two layers of foam.

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Relationship between large subject matter areas

Note the difference between B29C 45/14795 and B29C 45/14811.

Moulding processes, whereby material is injected directly on foam, is covered byB29C 45/14795.

In the case of a multilayer insert where one of the layers consist of foam, the classification is B29C 45/14811

Informative references
Attention is drawn to the following places, which may be of interest for search:

Coating multilayered articles

{Multilayered articles (B29C 45/14827 takes precedence ) }
Definition statement
This subclass/group covers:

EP1025973, fig 1, release layer, protecting layer, etc.

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Injection fig 7 & 8.

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Relationship between large subject matter areas

Concerning the preference of B29C 45/14827, it should be taken into account that this preference concerns either a double layered product where one layer is the transfer foil or a multilayered product, but were the invention concerns the use transfer foil as such (the identity of the other layers are not important for the invention).

Moulding processes, where the invention concerns the making of the multilayered inserts and where the fact that one of the layers can be removed is only disclosed on the level of additional information, is covered by the group B29C 45/14811.

References relevant to classification in this group
This subclass/group does not cover:

Insert and adhesive layer only

Insert with only decoration, paint, ink

Coating a porous layer

Informative references
Attention is drawn to the following places, which may be of interest for search:

laminated inserts overmoulded by injection moulding (Japanese F-term)

4F206/AD20, 4F206/AG03

Special rules of classification within this group

In this group, it is highly desirable to identify every layer of the insert by allocating the appropriate Indexing Code as provided in the subclass B29K, or even the ones provided in B29L

Typical examples:

Fabric layers: B29K713/00

Scratch resistant layers, Abrasion resistant layers, protection layers: B29K995/00F28

Barrier layers for gases: B29K995/00F16B

Decorative layers: B29K995/00E2

Porous layers, foam layers: B29K715/00B

Adhesive layers: B29K715/00E

Paint layers: B29L9/00D2

Metal layers: B29K705/00, B29L9/00C

Layers with a metalized surface: B29L9/00D4

Hydrophobic layers: B29K995/00F33

Hologram layers: B29L31/7224

{the inserts being completely encapsulated}
Definition statement
This subclass/group covers:

Making of golf balls by insert moulding

EP425933

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References relevant to classification in this group
This subclass/group does not cover:

Completely encapsulating reinforcement

Informative references
Attention is drawn to the following places, which may be of interest for search:

Positioning articles in the mould by means being retractable during the injection

{using a transfer foil detachable from the insert}
Definition statement
This subclass/group covers:

E.g. applying transfer foils to obtain decorative moulded articles.

Multilayered inserts whereby one layer is transfer foil to be removed from the remaining insert during the moulding process.

WO9516555, the dye material is transferred from the support layer to the plastic, the support layer is afterwards removed.

media326.jpg

Making multilayered or multicoloured articles { (B29C 45/0062 takes precedence; feeding colouring materials into the injection unit B29C 45/1816) }
References relevant to classification in this group
This subclass/group does not cover:

Injection moulding of successively moulded portions rigidly joined to each other

Injection moulding of interconnected elements which are movable with respect to each other

Joining articles injection moulded in separate cavities by injection moulding as final operation

{The materials being injected at different moulding stations}
Special rules of classification within this group

If of general interest, classification as provided in the B29C 45/04 and it subgroups can be allocated to documents classified in this group, typically at additional information level to identify the type of mould movement. Exceptionally the classification in B29C 45/04 or its subgroup can be added at inventive level, if the alleged invention relates to the movement of the mould, whereby said movement is of general interest and use.

{with a non-uniform dispersion of the moulding material in the article, e.g. resulting in a marble effect}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Co-extruding a multicoloured striated pattern

B29C47/04D

{Removable partitions between adjacent mould cavity portions}
Definition statement
This subclass/group covers:

Multi-component injection moulding processes whereby the second cavity is present before movement of the displaceable mould part.

{having a "sandwich" structure (B29C 45/1603 takes precedence ) }
References relevant to classification in this group
This subclass/group does not cover:

Multiway nozzles

{Injecting parison-like articles (B29C 45/1643 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow moulding of parisons with at least one injected layer

{with an insert}
Special rules of classification within this group

In this class it is highly desirable to identify all aspects related to insert moulding by allocating the appropriate classification as provided for in B29C 45/14 and subgroups at additional information level.

{using exchangeable mould halves}
References relevant to classification in this group
This subclass/group does not cover:

Multi-component injection moulding using different moulding stations

{Injecting parison-like articles (B29C 45/1625 , B29C 45/1643 and B29C 45/1646 take precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow moulding of parisons with at least one injected layer

Component parts, details or accessories; Auxiliary operations
Definition statement
This subclass/group covers:

filters not in the nozzle located

exchanging runner channels

locking of mold halves during transport

{using a particular environment during moulding, e.g. moisture-free or dust-free}
Definition statement
This subclass/group covers:

Moulding in an environment of inert gasses, reactive gasses, e.g. for preventing mould sweating or plastic oxidation

References relevant to classification in this group
This subclass/group does not cover:

Injection moulding in vacuum environment

Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow moulding in a particular environment

Compression moulding under special conditions

Casting under special conditions

Clean rooms for manipulators

Moulding in general using a particular environment

{Introducing an auxiliary fluid into the mould (B29C 45/1701 takes precedence ) }
Definition statement
This subclass/group covers:

the application of cooling or heating fluids as auxiliary fluid, counterpressure methods

{the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles (B29C 45/1732 and B29C 45/1734 take precedence; injection blow-moulding B29C 49/06) }
Definition statement
This subclass/group covers:

IGM (internal gas moulding)

Informative references
Attention is drawn to the following places, which may be of interest for search:

EGM (external gas moulding)

{using particular fluids or fluid generating substances}
Definition statement
This subclass/group covers:

E.g. the use of a plurality of gasses, refrigerating gasses, and other substances in combination with standard fluid

{Nozzles for introducing the fluid through the mould gate, e.g. incorporated in the injection nozzle}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow needles for blow moulding

{Applying a pressurised fluid to the outer surface of the injected material inside the mould cavity, e.g. for preventing shrinkage marks}
Definition statement
This subclass/group covers:

EGM (External Gas Moulding)

Informative references
Attention is drawn to the following places, which may be of interest for search:
Special rules of classification within this group

This technology is mainly applied for avoiding shrinkage marks, however these documents are not additionally being classified in B29C 45/0025

{Mounting of moulds; Mould supports ( mounting of exchangeable mould inserts B29C 45/2675) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mould plates mounted on frames

Mounting of moulds in general

Mounting of stampers

{Mould support platens}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Means for maintaining press tables or press platens against deflection

{Tie-rod connections}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting of press columns in presses

{Retractable tie-rods}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting of press columns in presses

{Adjustment means allowing the use of moulds of different thicknesses}
Definition statement
This subclass/group covers:

the control and regulation of mould thickness adjustment

{Cleaning or purging, e.g. of the injection unit (B29C 45/24 takes precedence ) }
Definition statement
This subclass/group covers:

cleaning the injection unit

cleaning the mould

Informative references
Attention is drawn to the following places, which may be of interest for search:

Cleaning of moulds and cores in general

Cleaning extruder parts

B29C47/08B

{Handling of moulds or mould parts, e.g. mould exchanging means ( moulds per se B29C 45/26) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting of moulds

Handling of moulds in general

{Exchanging the injection unit or parts thereof}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Exchanging extruder parts

{Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames (B29C 45/1747 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mould plates mounted on frames:

{Handling of moulded articles or runners, e.g. sorting, stacking, grinding of runners}
Definition statement
This subclass/group covers:

Sorting, guiding, stacking, grinding

References relevant to classification in this group
This subclass/group does not cover:

heating and/or cooling moulded parts

shaping of moulded articles

{Display units or mountings therefor; Switch cabinets}
Definition statement
This subclass/group covers:

(mechanical) features of the display unit itself.

Informative references
Attention is drawn to the following places, which may be of interest for search:

using visualisation means in moulding processes general

{Connecting parts, e.g. injection screws, ejectors, to drive means}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Drive connections for presses

{Nozzle touch mechanism}
Definition statement
This subclass/group covers:

Adjusting the nozzle in respect to the mould

Feeding the material into the injection moulding apparatus, {i.e. feeding the non-plastified material into the injection unit}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Dispensing moulding material from hoppers in general

Feeding of the material to be moulded

Feeding the material to be extruded

{Feeding measured doses}
Definition statement
This subclass/group covers:

feeding of tablets, preforms

Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection of preformed charges of material

{Feeding auxiliary material, e.g. colouring material}
Definition statement
This subclass/group covers:

E.g. feeding auxiliary material into the runner channel, the auxiliary material can for example be recycled material or fibre reinforcements

Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding additives to the extruder

{Changing the kind or the source of material, e.g. using a plurality of hoppers}
Definition statement
This subclass/group covers:

Changing the feed from hoppers containing the same material or different materials, using one hopper to which different materials are supplied

Material switches

Injection nozzles { (B29C 45/1603 takes precedence ) }
Definition statement
This subclass/group covers:

The machine nozzle, injecting the moulding material into the mould

References relevant to classification in this group
This subclass/group does not cover:

Machine nozzles specially adapted for multi-component injection moulding

Informative references
Attention is drawn to the following places, which may be of interest for search:

Runner nozzles, i.e. the nozzles located within the mould

Multiple nozzle systems
Informative references
Attention is drawn to the following places, which may be of interest for search:

Using a material distribution system for two or more fixed moulds

{Needle valve systems therefor}
Definition statement
This subclass/group covers:

needles valves that are pushed against a seat inside of a nozzle.

Cleaning equipment
Definition statement
This subclass/group covers:

all filters, when they are located upstream of the nozzle within the injection unit.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Filters in extrusion nozzles or dies

Filtering material to be shaped

Filters in the mould

Moulds
Definition statement
This subclass/group covers:

Moulds for particular articles

EP263575

Special rules of classification within this group

Attention for the assignment of the Indexing Codes as provided in the subclass B29L!

{Mould construction elements}
Definition statement
This subclass/group covers:

DE4337942, fig 1 Klinkenzug (=constructional element) to allow the several mould elements to move in a certain order.

media327.png

DE4124590, fig 4, interconnecting elements

media328.png

{Guiding or centering means}
Definition statement
This subclass/group covers:

Guiding and centering of the moulds relatively to each

Guiding and centering a mould half on the mould carrier plate

DE1951908, fig 2,

media329.png

US5776517, cf. centering means 10

media330.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Centering mould halves or parts in general

{Mould seals}
Definition statement
This subclass/group covers:

EP958908, Element 106 is a sealing element.

media331.png

References relevant to classification in this group
This subclass/group does not cover:

Applying a sealing means as an insert

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds in general provided with sealing means

Compression moulds provided with means to avoid flashes

Die seals for pressure casting

{having tubular mould cavities}
Definition statement
This subclass/group covers:

EP852339 optical connectors, fig 7b, 51,52 = tubular

media332.png

EP501091, fittings, element G in figure 7

media333.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing pipe or pipe joints

Ferrules for optical fibres

G02D6/38D6R

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Tubular

refers to being open at both ends and hollow

{for manufacturing tubular articles with an annular groove}
Definition statement
This subclass/group covers:

DE2633050 see element 13, fig 2.

media334.png

GB2145364

media335.png

DE2757756

media336.png

{having annular mould cavities}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing tyres or parts thereof by injection moulding

{provided with unscrewing drive means ( unscrewing means outside the mould B29C 45/178) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds in general for stripping articles from a mould core using a rotating movement: to unscrew articles

Discharging articles by stripping from a mould core using a rotating movement: to unscrew articles

{provided with a multiplicity of wall-like cavities connected to a common cavity, e.g. for battery cases}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing casings, e.g. accumulator cases

{provided with a multiplicity of narrow cavities connected to a common cavity, e.g. for brushes, combs}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with deep narrow cavities in general

Making of toothbrushes

{with mould parts forming holes in or through the moulded article, e.g. for bearing cages}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds for making articles with holes in general

{with mould wall parts provided with fine grooves or impressions, e.g. for record discs}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Preparing and using a stamper for the manufacture of records or carriers

Record carriers characterised by their resin composition

Producing phonographic records

{Stampers; Mountings thereof}
Definition statement
This subclass/group covers:

the mounting of stamper layers

{Heating or cooling means therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating or cooling the injection mould in general

{with exchangeable mould parts, e.g. cassette moulds (B29C 45/1756 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with exchangeable mould parts in general:

Adjustable moulds for injection moulding:

Adjustable moulds in general:

B29C33/30B4

Sprue channels {Runner channels or runner nozzles}
Definition statement
This subclass/group covers:

Sprue bushings, runner nozzles, runner channels

References relevant to classification in this group
This subclass/group does not cover:

Runner nozzles for multi-component injection moulding

Informative references
Attention is drawn to the following places, which may be of interest for search:

Machine nozzles (i.e. the nozzles injecting the material into the mould)

{Details not specific to hot or cold runner channels (B29C 45/2725 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Material feeding channels in general

{Means for controlling the runner flow, e.g. runner switches, adjustable runners or gates}
Definition statement
This subclass/group covers:

e.g. rotatable sprue bushings

{Gates (B29C 45/2703 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mould filling gates in general

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

gate

the mould part that connects the runner with the cavity or cavity entrance.

{for non-coaxial gates, e.g. for edge gates}
Definition statement
This subclass/group covers:

Side gates

{consisting of needle valve systems (B29C 45/2896 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Needle valves in spray nozzles in general

having several axially spaced mould cavities, {i.e. for making several separated articles}
Definition statement
This subclass/group covers:

Stack moulds

Informative references
Attention is drawn to the following places, which may be of interest for search:

Stack moulds in general

Presses having several platens arranged one above the other

having venting means
Definition statement
This subclass/group covers:

E.g. moulding in a vacuum environment

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with incorporated venting means in general

Moulding using vacuum in general

Venting means for metal casting moulds

Mould cavity walls, {i.e. the inner surface forming the mould cavity, e.g. linings}
Definition statement
This subclass/group covers:

Mould cavity wall materials

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mould coatings in general

{provided with means for marking or patterning, e.g. numbering articles}
Definition statement
This subclass/group covers:

Moulds walls provided with a surface roughness

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds provided with means for marking or patterning in general

{for displaying altering indicia, e.g. data, numbers}
Definition statement
This subclass/group covers:

Mould cavity wall indicator means which are able to be adjusted in the mould.

References relevant to classification in this group
This subclass/group does not cover:

Indicators by exchanging parts of the cavity wall

{adjustable (B29C 45/374 takes precedence ) }
Definition statement
This subclass/group covers:

Changing of the cavity configuration, e.g. by mould parts that are movable

Cutting-off equipment for sprues or ingates
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cutting-off surplus material in metal casting

Cutting-off sprues in pressure die casting

Removing or ejecting moulded articles
Definition statement
This subclass/group covers:

The process of the ejection

EP92916

media337.png

Mechanical details of the ejector (covered by B29C 45/4005 and B29C 45/401)

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with means for removing or ejecting articles in general

Discharging articles from the mould in general

Ejecting castings in pressure die casting

{Ejector constructions; Ejector operating mechanisms (B29C 45/44 takes precedence ) }
Definition statement
This subclass/group covers:

EP503068 fig 1, construction of the drive of the ejection unit.

media338.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mechanical ejectors of moulds in general

{Ejector pin constructions or mountings}
Definition statement
This subclass/group covers:

WO9819845, fig 3 and 4, sealing means 13 and construction 15 are special features of the pin.

media339.png

media340.png

using means movable from outside the mould between mould parts, {e.g. robots}
Definition statement
This subclass/group covers:

Robots for removing moulded articles

EP218101

media341.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging moulded articles by robots in general

Manipulators for evacuating cast pieces in pressure die casting

Robots in general

{and driven by the movable mould part}
Definition statement
This subclass/group covers:

EP837666, the moving mould causes the rack to rotate the pignon to move the robot

media342.png

{Take-off members or carriers for the moulded articles, e.g. grippers}
Definition statement
This subclass/group covers:

The part of the robot that picks up the moulded article

EP919352

media343.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Gripping heads of manipulators in general

Gripping devices for feeding or discharging articles from a conveyor

using fluid under pressure
Definition statement
This subclass/group covers:

US4438065, fig 5 & 6, air through channel 70 & 75

media344.png

US3892512, fig 4 & 5

media345.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Using fluid pressure to remove articles from the mould in general

{introduced between a mould core and a hollow resilient undercut article, e.g. bellows}
Definition statement
This subclass/group covers:

EP818297, fig 5

media346.png

EP100422 fig 1 & 2

media347.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Bellows obtained by moulding

B29L31/703

for undercut articles
Definition statement
This subclass/group covers:

EP595491

media348.png

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

undercut

an opening in a moulded article made by a supplementary mould part which can not move in an axial direction upon mould opening.

{by flexible movement of undercut portions of the articles}
Definition statement
This subclass/group covers:

the flexible movement is the UNDERCUT PORTION of the ARTICLE

EP635351, fig 8,9,10 part 24 can move flexible

media349.png

EP510650, fig 1, undercut 44,/64. fig 2b & 4b core moves and undercut can flex away

media350.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Discharging moulded articles from the mould by deforming undercut portions of the article in general

{using expansible or collapsible cores}
Definition statement
This subclass/group covers:

moulds comprise usually two types of cores.

US5403179, items 108 and 138 are collapsible, because of the insertable and removable pin.

The movement of the cores is linked to each other.

media351.png

US4286766

media352.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Collapsible cores or mandrels for removing or ejecting moulded articles in general

Collapsible cores for winding and joining

{using inclined, tiltable or flexible undercut forming elements driven by the ejector means}
Definition statement
This subclass/group covers:

Only undercut forming element being driven by the ejector means.

Three types of undercut forming elements are present:

Flexible:

EP1201396, fig 4, undercut forming element 3, flexing at 2, driven by 9/10

media353.png

Inclined:

US5551864, inclined element 26 driven by 24

media354.png

Tiltable (or pivotable),

US5773048, Undercut forming element 94, driven by ejector 46. See hinge 90-92 (fig 1 & 2)

media355.png

media356.png

DE19507009, figure 1

media357.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Inclined, tiltable or flexible undercut forming elements driven by other means than the ejector

{using fusible, soluble or destructible cores}
Definition statement
This subclass/group covers:

Soluble cores, e.g. salt, ice, wax, plastic, metal

EP173447, claim 1, core 17 (fig 1-5)

media358.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Soluble cores to facilitate the removal or ejection of moulded articles in general

Destructible cores to facilitate the removal or ejection of moulded articles in general

{using flexible or pivotable undercut forming elements (B29C 45/4435 takes precedence ) }
Definition statement
This subclass/group covers:

EP1223021, fig 2 & 3. The pincers of the head open automatically.

media359.png

EP421136, pivotable/tiltable. Plastic = 5, part 14/14a pivotable. The outside pivoting movement of 14 is actioned by 16.

media360.png

EP738578, fig 5-7, pivotable part 9

media361.png

media362.png

US5630977 fig 1 & 2 (flexible)

media363.png

References relevant to classification in this group
This subclass/group does not cover:

Pivotable undercut forming elements driven by the ejector

Informative references
Attention is drawn to the following places, which may be of interest for search:

Elastic or flexible cores or mandrels to facilitate the removal of the moulded article

{using non-rigid undercut forming elements, e.g. elastic or resilient}
Definition statement
This subclass/group covers:

DE2609198, fig 4-6, non-rigid element 24,

media364.png

DE2239508, element 20 can act in a flexible way after rod 24 is removed

media365.png

GB2323321, inflatable means 28,

media366.png

FR1559371, element 9

media367.png

US5080576, element 16

media368.png

{Injection of preformed charges of material}
Definition statement
This subclass/group covers:

Injection of lumps, billets, tablets, preforms

Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding of measured doses

Blocks, tablets as preform for moulding

B29K105/25C2

{using a rotating plasticising or injection disc}
Definition statement
This subclass/group covers:

Grooved conical discs for plasticising or injection

Informative references
Attention is drawn to the following places, which may be of interest for search:

Using rollers or discs in extrusion moulding

{Drive means therefor}
Definition statement
This subclass/group covers:

Drives for axially movable screws by rotation and translation or translation only

References relevant to classification in this group
This subclass/group does not cover:

Drives for axially movable screws by rotation only

Informative references
Attention is drawn to the following places, which may be of interest for search:

Hydraulic circuits in injection moulding machines as such

{Rotatable mould parts}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding articles between moving mould surfaces

{Applying vibrations to the mould parts}
Definition statement
This subclass/group covers:

applying vibrations to runners, gates, etc. during moulding.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Using vibrations during moulding in general

Exerting after-pressure on the moulding material { (B29C 45/174 takes precedence ) }
Definition statement
This subclass/group covers:

the application of dwell pressure

Informative references
Attention is drawn to the following places, which may be of interest for search:

Compensating volume or shape change during moulding in general

Applying pressure to compensate volume change during casting

{using movable mould wall or runner parts}
Definition statement
This subclass/group covers:

the application of dwell pressure by means incorporated in the mould, e.g. locally pressurizing pins

EP662383 (mould wall part)

media369.png

EP1052078 (runner part)

media370.png

Relationship between large subject matter areas

The difference between injection compression moulding (B29C 45/561) and B29C 45/572 is typically that in injection compression moulding a movable mould half is used for shaping the material in the cavity, while in B29C 45/572 the already shaped material is pressed for compensating the volume change caused by the shrinkage. Pressurizing is typically done locally e.g. by pressurizing pins

It is further noted, that B29C 45/56 comprises a reference out, that B29C 45/572 takes precedence.

Details
Definition statement
This subclass/group covers:

Details of the injection unit

{Devices for influencing the material flow, e.g. "torpedo constructions" or mixing devices}
References relevant to classification in this group
This subclass/group does not cover:

Details of the screw

Heating or cooling of the injection unit

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixing devices in extrusion moulding

Extruder like static flow mixers in general

{Vibration means for the injection unit or parts thereof}
Definition statement
This subclass/group covers:

Vibrating screws or plungers

Informative references
Attention is drawn to the following places, which may be of interest for search:

Applying vibration to mould parts

Applying vibrations during extrusion moulding

Applying vibrations during extrusion moulding of ceramics

Applying vibrations during moulding in general

L29C971/00E8

{Injection or transfer plungers}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection pistons for pressure die casting

Screws
Definition statement
This subclass/group covers:

mixing parts connected to the screw

Informative references
Attention is drawn to the following places, which may be of interest for search:

Screws in extrusion moulding:

Barrels or cylinders
Definition statement
This subclass/group covers:

Also transfer pots

Informative references
Attention is drawn to the following places, which may be of interest for search:

Details of extruder barrels or cylinders

Construction of extruder barrels

Venting or degassing means
Informative references
Attention is drawn to the following places, which may be of interest for search:

Venting or degassing means in extrusion moulding

Mould opening, closing or clamping devices { ( combined with means for plasticising or homogenising B29C 45/70) }
Definition statement
This subclass/group covers:

Mechanical, hydraulic and hydro-mechanical opening, closing & clamping means. For these aspects subgroups are present.

The remaining scope of B29C 45/64 is small, e.g. magnetic, piezo-electric, magnetostrictive means, using shape memory alloy.

DE10053424: linear motors L1 & L2

media371.png

DE4336572, magnetostrictive elements (13)

media372.png

DE3715161, electromagnet 12

media373.png

EP272138, claim 1, elongation of the tie-bar by energy storage.

media374.png

EP807508

media375.png

{Clamping devices using means for straddling or interconnecting the mould halves, e.g. jaws, straps, latches}
Definition statement
This subclass/group covers:

Clamping devices applicable to moulds which are ALREADY CLOSED.

EP1214999, fig 1, stradling means 9

media376.png

EP420098, stradling means 7b

media377.png

EP0209413, locking means 11 after closing

media378.png

WO0121378, stradling means 13

media379.png

WO9942275, mould halves 26/62 clamped by 10 (fig 2)

media380.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means in general

mechanical
Definition statement
This subclass/group covers:

Mechanical means for opening closing and clamping. A motor for driving the mechanical means can only be electric or servo but not hydraulic.

EP645228 fig 1 (note: this is not a toggle, then it should have been driven at point 18, it is driven at 16)

media381.png

EP627577 lever

media382.png

EP427438 fig 2, pignon/rack 11/12

media383.png

EP386233 crank mechanism fig 1a,b,c

media384.png

EP381770 40,50 ball nut & screw mechanism.

media385.png

Examples for cranks and excentrics as mechanical opening, closing and clamping means are taken from the field of presses (B30B) for reference purpose.

Cranks:

US5544577, driven crank axis is 14, 6 is like the mould

media386.png

DE403768 Driven axis is a which drives b

media387.png

Eccentrics:

DE19810425 continuous axis 4 is driven, around the excenter or cam is the bush which is rotated in an excentric way to drive part 12 for ´opening closing clamping mould 3´

media388.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Presses driven by a lever mechanism

Presses driven by cranks, cams, or eccentrics

{using a toggle mechanism for mould clamping}
Definition statement
This subclass/group covers:

EP775567 screw nut drives the toggle, the toggle drives the moving mould, therefore toggle

media389.png

EP546187 fig 5 toggle

media390.png

EP427438 fig 5 rack & pignon drives the toggle

media391.png

EP164419 fig 1, servomotor 1 driving nut 4 & screw drives the toggle

media392.png

Reference is further made to several types of toggle mechanisms for mould clamping:

DE9403353U figures 1,2 and 3,

media393.png

EP573917 fig 1,

media394.png

EP383935 fig 1

media395.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Presses driven by a toggle mechanism

hydraulic
Definition statement
This subclass/group covers:

EP665093, clamping cylinder 32, opening &closing cylinder 22

hydraulic includes also other fluids & gas (e.g. pneumatic)

media396.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Hydraulic circuits in general

{without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement}
Definition statement
This subclass/group covers:

JP10296809, during opening and closing operation by cylinder 20, the clamping force cylinder 22 is inactive and moves together with the movable platen 18. Only after closing the mould and clamping on the tie rods (locking nut & cylinder 26,28), there is a relative movement between the piston 24 and the cylinder 22 of the clamping device

media397.png

EP689924, opening & closing by cylinder 8, locking means 9 after locking clamping by cylinder 6.

media398.png

EP319487 10 = closing means, clamping on tie rod by 12, pulling & clamping by 36

media399.png

WO99/00239, closing by cylinder 5, blocking on tie rod by 19, tie rod clamped by cylinder 13

media400.png

US3862596, exceptional no clamping on the tie rods, similar no movement for the clamping cylinder

media401.png

US3833333 movable cylinder, clamping cylinder 45/47/48, opening & closing 20/21

media402.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Presses using low fluid pressure long stroke plunger for opening and closing and high pressure short stroke cylinder means

{using a separate element transmitting the mould clamping force from the clamping cylinder to the mould}
Definition statement
This subclass/group covers:

Separate element is MCFTM (mould clamping force transmitting means)

EP551099 fig 1, element 28 = MCFTM & moves with the movable mould.

media403.png

Once the mould is closed (fig 2), block plate 66, required for being able to transmit the clamping force. Note that the clamping cylinder is not operative during opening & closing

media404.png

EP513572: MCFTM 30/31.

Fig 1 mould closed, blocked position

media405.png

fig 3 & clamping force can be transmitted

media406.png

EP480351 MCFTM = element 18

media407.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Presses using low fluid pressure long stroke plunger for opening and closing and high pressure short stroke cylinder means

{the separate element being displaceable with respect to the mould or the clamping cylinder}
Definition statement
This subclass/group covers:

MCFTM (mould clamping force transmission means, cf. B29C 45/6714) is ´removable´.

GB1220970 MCFTM 15 is put in between only when the mould is closed, see fig 1, otherwise opening & closing cylinder 6,7 would not be able to open the mould.

media408.png

GB1032477 element 8 = removable MCFTM (fig 1 & 2)

media409.png

FR2084078 removable MCFTM = element 44

media410.png

{the separate element consisting of coupling rods}
Definition statement
This subclass/group covers:

tie rods mounted on and movable with the movable mould plate and coupled to the fixed mould plate during mould clamping. Bayonet couplings are typically applied.

The separate mould clamping force transmission means, (SMCFTM) is the coupling rod 164 in EP296410, coupling means 180.

media411.png

WO8902357, SMCFTM = coupling members 12,13. clamping by 16.

media412.png

GB2064415 clamping bush 31, piston 18.

media413.png

{using hydraulically connectable chambers of the clamping cylinder during the mould opening and closing movement}
Definition statement
This subclass/group covers:

JP7186220, hydraulic chambers A1 & A2 are able to communicate through passage 19 and valve 21 during the opening and closing movement of the clamping die. Note the difference in active piston surface area on the left side and right side of 11

Clamping pressure is typically applied to only one of the chambers (A1), note the possibility of fluid leakage through 23 & 25.

media414.png

EP281330, fig 1, cylinder 27 during closing volume hydraulic chamber decreases so hydraulic oil moves through 33 into W. Fig 2, valve 34 is closed and high pressure oil is fed from pump 14 to W.

media415.png

{the connection being provided within the clamping cylinder}
Definition statement
This subclass/group covers:

EP342235, see fig 1,2 the different diameter clamping piston & cylinder. After closing, no connection between chamber 1a & 1b. In fig 1, the oil still flows between the chambers.

media416.png

In fig 2, clamping is possible (chamber 1b).

media417.png

EP281329, opening 47 can be closed by valve 52.

Fig 4, open.

media418.png

Figure 6, closed valve, now high pressure in room B, possible to clamp. The connection is done through the plunger.

media419.png

{Stroke adjusting or limiting means}
Definition statement
This subclass/group covers:

DE2203020 cf. element 3

media420.png

hydro-mechanical
Definition statement
This subclass/group covers:

WO9211993, closing by screw/nut (fig 1), hydraulic chamber 19 for clamping.

media421.png

DE10103983

media422.png

{using a toggle mechanism as mould clamping device}
Definition statement
This subclass/group covers:

EP192484, piston 4 drives the toggle 5 for opening, closing and clamping.

media423.png

WO8900914, cf. fig 1

media424.png

{using both a toggle mechanism as mould closing device and another mechanism as mould clamping device}
Definition statement
This subclass/group covers:

FR2317982, closing by toggle. The toggle is only used for closing, not for clamping. A separate cylinder (6,7,8) is provided for clamping.

media425.png

FR2302187, Closing of toggle 5,6 by cylinder 1.Separate means (14) for clamping

media426.png

Heating or cooling
Definition statement
This subclass/group covers:

Heating or cooling of the mould (covered by B29C 45/73), the moulded articles (covered by B29C 45/7207), the injection unit (covered by B29C 45/74) as well as the mould and the injection unit (covered by B29C 45/72).

References relevant to classification in this group
This subclass/group does not cover:

Heating of tablets

Heating or cooling means for runner channels

Heating or cooling means for moulds provided with fine grooves or impressions

{of the moulded articles}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cooling preforms during blow moulding:

Cooling in general:

of the mould { (B29C 45/2642 and B29C 45/2737 take precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with incorporated heating or cooling means in general

Cooling or heating equipment for pressure casting dies

Press plates with heating or cooling means

{Control circuits therefor}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Tempering units for temperature control of moulds or cores in general

of the injection unit
Definition statement
This subclass/group covers:

heating of the injection unit, including everything which belongs to it, e.g. hopper, cylinder.

References relevant to classification in this group
This subclass/group does not cover:

Heating and cooling of the injection unit AND the mould

Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating or cooling of the extrusion cylinder

Measuring, controlling or regulating { (measuring in general G01; controlling or regulating in general G05) }
References relevant to classification in this group
This subclass/group does not cover:

Control and regulation of mould thickness adjustments

Special rules of classification within this group

Document classified in B29C 45/76 and subgroups are indexed by allocating B29C 2945/00 Indexing Codes to identify all aspect related to what, how, when, where the measurement is done and what, how, where and when the regulation is done. .

{the ejection or removal of moulded articles}
Definition statement
This subclass/group covers:

e.g. using a camera or laser to inspect if an article has been correctly ejected, the process of ejection.

Special rules of classification within this group

Since B29C 45/7626 takes precedence over B29C 45/84, inspection systems for controlling the ejection, including an alarm system as a safety device, are only classified in B29C 45/7626.

{the ejected articles, e.g. weight control}
Relationship between large subject matter areas

Measuring and controlling of the articles once they are ejected.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Control of the ejection process of moulded articles

Hydraulic {or pneumatic} circuits
References relevant to classification in this group
This subclass/group does not cover:

Hydraulic or pneumatic circuits for mould clamping

Lubricating means
References relevant to classification in this group
This subclass/group does not cover:

Release agents, lubricating means for mould cavity walls

Informative references
Attention is drawn to the following places, which may be of interest for search:

Cleaning or lubricating moulds in pressure die casting

Lubricating means for presses

Safety devices { (B29C 45/7626 takes precedence ) }
References relevant to classification in this group
This subclass/group does not cover:

Safety devices for the ejection process

Informative references
Attention is drawn to the following places, which may be of interest for search:

Safety devices for pressure die casting

{Detection of insert defects, e.g. inaccurate position, breakage}
Definition statement
This subclass/group covers:

e.g. detection of broken glass to be overmoulded, misfeeding the inserts

Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor ( extrusion blow-moulding B29C 49/04 ; extrusion presses in general B30B 11/22)
Definition statement
This subclass/group covers:

Processes whereby material of substances in a plastic state (e.g. polymers) are being pressed through a nozzle, thereby obtaining a cross sectional shape. This shape could be any hollow or solid shape.

Combinations of extrusion and other shaping techniques.

media427.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixing dough

Mixing chocolate

Mixing in general, phases

Mixing in general, mixer types

Mixing in general, mixers with rotary stirring devices

Mixing or kneading with more than one shaft

Hand held extruders

Extruding metal

Extruding clay

Presses for clay or mixtures containing cement wherein material is extruded

Mixing, kneading of the material to be shaped

Making preforms by extrusion moulding

Extrusion blow moulding whereby the parison is being partly injected and partly extruded

Extrusion blow moulding in general

Presses using a press ram

Presses for forming shaped articles from particulate or plastic state, extrusion presses

Machinery for making envelopes or bags etc

Folding and filling bags

Extruding micro structures

Reaction extrusion

Melt spinning

Special rules of classification within this group

All material aspects, not only the moulding material as such, but also fillers, preformed parts of mould (die) composition has to be identified by allocating the appropriate Indexing Code of B29K. This also applies to moulding material properties, e.g. tear strength for identifying that extruded layers are easily torn apart is classified in B29K995/00F23

Extrusion techniques characterised by the material must be allocated a classification in B29C 47/0004.

All SHAPING CONDITIONS influencing the extrusion technique, e.g. extrusion in sterile or vacuum environments, the application of vibrations, must be identified by allocating the appropriate Indexing Code as provided in B29C 2791/004 and subgroups, as well the classification in B29C 47/0071 or subgroups.

Cutting operations and printing operations must be identified by allocating the appropriate Indexing Code as provided in B29C 2793/00 and B29C 2795/00

All ARTICLES must be identified by allocating the appropriate Indexing Codes as provided for by the subclass B29L, e.g.

anchoring between layers in general, e.g. due to chemical treatment B29L9/00D

mechanical anchoring in general, e.g. layers gripping into each other B29L9/00D2

thin sections in general, e.g. tear line B29L31/7744

COMBINATIONS of extrusion and other techniques corresponding to the subgroups of B29C 47/0038 are classified in B29C 47/0038 or one of its subgroups.

Orienting or stretching of extruded materials should be identified by allocation the Indexing Code B29K995/00F10 or one of its subgroups.

The Indexing Codes B29C 2791/00 - B29C 2791/003 are generally not used in this group B29C 47/00

All MEASURING and CONTROL aspects must receive the relevant code(s) in the B29C 2947/92 indexing scheme.

{Small extruders, e.g. handheld extruders or laboratory extruders}
Definition statement
This subclass/group covers:

E.g. extruders used for material testing or making test speciments for testing material properties.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Design of extruder parts, e.g. by modelling based on mathematical theories or experiments

{characterised by the choice of material}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Compostions of Macromolecular compounds in general

Polymer / Wood fiber composites

Coagulating materials by using a bath

Moulding materials

B29K1/00- B29K103/00

Condition form or state of the material to be shaped or moulded material

B29K105/00

Use of materials as reinforcements

B29K201/00- B29K313/00

Use of materials as preformed parts, e.g. inserts

B29K601/00- B29K713/00

Use of materials as mould material

B29K801/00- B29K913/00

Properties of the moulding materials

B29K995/00

{Extruding materials comprising incompatible ingredients}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Degradable materials

B29K995/00F14

Feeding at several locations

{characterised by the shape of the articles}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Manufactured articles

{Particle-shaped ( making granules B29B 9/00) }
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Particle, Powder, Granule

media428.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Particles, powder, granules

B29K105/25B

Making granules

{Filamentary-shaped articles, e.g. strands ( making granules in the form of filamentary material B29B 9/06) }
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Filamentary (threads, fibres)

media429.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Filamentary material:

B29L31/7310

Producing filamentary materials:

{Rod-shaped articles}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: NON-Tubular RIGID (rod)

media430.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Rods

B29L31/06

Producing rods

{Flat rigid articles, e.g. panels, plates}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Flat RIGID (panel/plate)

media431.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Flat articles

B29L7/00

Belts or bands

B29L29/00

{Flat flexible articles, e.g. sheets, foils or films}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Flat FLEXIBLE(sheet/foil/film)

media432.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Flat articles

B29L7/00

Films webs

B29L7/00F

Belts or bands

B29L29/00

{Hollow rigid articles having only one tubular passage}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Tubular RIGID (ONE hole)

media433.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Hollow articles

B29L22/00

Tubular articles

B29L23/00

Tubes or pipes i.e. rigid

B29L23/22

Articles with hollow walls

B29L24/00

{Hollow flexible articles, e.g. blown foils or films}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Tubular FLEXIBLE (foil/film)

media434.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Tubular articles

B29L23/00

Tubular films, sleeves

B29L23/00B

{Multi-passage hollow articles, e.g. having at least two holes, e.g. honeycomb articles}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: MULTI hole (honeycomb)

media435.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Extruding ceramic honeycomb structures

Producing honeycomb structures

Multi-tubular articles

B29L31/60

Honeycomb

B29L31/60C

{Articles having cross-sectional irregularities, i.e. being non-flat or having cylindrical cross-sections perpendicular to the extrusion direction}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Irregular (NON flat/cylindrical)

media436.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Articles having a profiled cross section

B29L31/00B4

{Articles having longitudinal irregularities, i.e. the cross-section being non- constant in the extrusion direction}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: LONGITUDINALLY Irregular

media437.jpg

{Curved articles}
Definition statement
This subclass/group covers:

The extrusion moulding articles of articles characterised by their shape, the shape being: Curved

media438.jpg

{producing flat articles having components brought in contact outside the extrusion die}
Definition statement
This subclass/group covers:

media439.png

{producing hollow articles having components brought in contact outside the extrusion die}
Definition statement
This subclass/group covers:

media440.png

{using a plurality of extrusion dies}
Definition statement
This subclass/group covers:

media441.png

{Extrusion moulding combined with blow-moulding or thermoforming ( blow-moulding in general B29C 49/00 ; thermoforming in general B29C 51/00) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Blow moulding combined with the manufacture of the preform

Thermoforming combined with the manufacture of the preform

{Extrusion moulding combined with shaping by orienting, stretching or shrinking, e.g. film blowing (B29C 47/0054 takes precedence ) ( shaping by stretching in general B29C 55/00 ; shaping by liberation of internal stresses in general B29C 61/00) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Oriented material

B29K995/00F10

Special rules of classification within this group

The Indexing Codes as provided in B29K995/00F10 and subgroups should preferably be allocated to identify aspects relating to orienting or stretching

{Extrusion moulding combined with shaping by flattening, folding or bending ( bending, folding or flattening in general B29C 53/00) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Folding and filling bags

Folding sheets for making bags

Shaping by bending, folding, twisting, straightening or flattening of blown tubular films

{Extrusion moulding combined with cutting}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cutting

Cutting off

Cutting longitudinally

Special rules of classification within this group

The Indexing Codes as provided in B29C 2793/00 and subgroups should preferably be allocated to identify aspects relating to the process of cutting

{Extrusion moulding combined with printing or marking}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Printing

Special rules of classification within this group

The Indexing Codes as provided in B29C793500 and subgroups should preferably be allocated to identify aspects relating to the process of printing.

{extruding under particular conditions, e.g. in particular environments or using vacuum or vibrations}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping conditions, e.g. vacuum

{using force fields, e.g. gravity or electrical fields (B29C 47/887 takes precedence ) }
Definition statement
This subclass/group covers:

E.g. vertical extrusion

incorporating preformed parts or layers, e.g. extrusion moulding around inserts or for coating articles
Informative references
Attention is drawn to the following places, which may be of interest for search:

Applying material to surfaces

Applying material to a part of an article

Relative movement between apparatus parts, e.g. moving die along preformed part to be coated

{Coloured articles}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Applying coating, colouring

Applying surface layers, e.g. coatings, decorative layers

Materials having optical properties

B29K995/00E

Pigments, colouring agents

B29K105/00E10

Coloured articles

B29K995/00E2

Multi-coloured articles

B29K995/00E2B

{comprising a multi-coloured single component, e.g. striated, marbled or wood-like patterned}
Definition statement
This subclass/group covers:

media442.png

{Multilayered articles or multi-component articles}
Definition statement
This subclass/group covers:

Co-extrusion of several components, e.g. layers

Informative references
Attention is drawn to the following places, which may be of interest for search:

Dies for co-extrusion of multi-component articles

Incorporating preformed components

Layered products

B29L9/00

Producing layered products

B29D9/00

Layered products

Methods or apparatus for laminating

{comprising six or more components, i.e. each component being counted once for each time it is present, e.g. in a layer}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Layer multiplication

{with components adjacent to each other, i.e. components merging at their short sides}
Definition statement
This subclass/group covers:

media443.png

{in the form of a thin strip, e.g. in the form of a helical pattern or mark lines}
Definition statement
This subclass/group covers:

media444.png

{with components in layered configuration, i.e. components merging at their long sides}
Definition statement
This subclass/group covers:

media445.png

{using means for adhering the layers or components, e.g. using tie layers, irregularities or undercuts}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Tear strength in general, e.g. layers easily torn apart

B29K995/00F24

Anchoring between layers in general, e.g. due to chemical treatment

B29L9/00D

Mechanical anchoring in general, e.g. layers gripping to each other

B29L9/00D2

{using means for avoiding adhering the layers or components, e.g. articles comprising peelable layers}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding of thin sections in general, e.g. tear line

B29L31/7744

Decreased tear strength

B29K995/00F23

{Drive or actuation means; Transmission means; Screw supporting means}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Drive means for presses

Gearings

{Drive or actuation means for non-plasticising purposes, e.g. dosing unit}
Definition statement
This subclass/group covers:

E.g. drives for conveyor unit or cutting unit

{Flow control means, i.e. adjustable parts, e.g. valves ( throttling of flow B29C 47/0871) }
Definition statement
This subclass/group covers:

Valves or adjustable parts, e.g. for changing flow direction, to change or modify the flow pattern or to throttle the flow.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Explicit throttling in general

{Exchangeable extruder parts (B29C 47/681 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding exchanging the injection unit or parts thereof

{Screw parts}
Definition statement
This subclass/group covers:

E.g. modular screw parts

{Barrel parts}
Definition statement
This subclass/group covers:

E.g. modular barrel parts

{Die parts}
Definition statement
This subclass/group covers:

E.g. modular die parts

{Hopper or feeder parts}
Definition statement
This subclass/group covers:

E.g. modular hopper of feeder parts

{Inserts}
Definition statement
This subclass/group covers:

Small parts, e.g. for changed flow pattern, changed extrudate shape, to throttle flow or replaceable parts due to wear

{General arrangement or layout of plants}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Using more than one extruder to feed one die, e.g. adapter blocks

{Extruder machines or parts thereof characterised by the material or by their manufacturing process (B29C 47/0818 take precedence; making of dies B23P 15/24) }
Definition statement
This subclass/group covers:

E.g. first time assembly

e.g. cooling a barrel lining and inserting it into the barrel

Informative references
Attention is drawn to the following places, which may be of interest for search:

Manufacturing dies

Moulds characterised by the manufacturing process

Use of materials as mould material

B29K801/00- B29K913/00

{Dies}
Special rules of classification within this group

Materials and coatings for calibrators are classified in the same groups as for dies, B29C 47/085, B29C 47/0852

{Design of extruder parts, e.g. by modelling based on mathematical theories or experiments}
Definition statement
This subclass/group covers:

Extruder calculations, e.g. analytical or numerical, theory or experiments.

{by modelling of mechanical strength}
Definition statement
This subclass/group covers:

E.g. analytical or numerical

{Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Extruding onto a preformed part or component

{Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing ( flow control means B29C 47/0811) }
Definition statement
This subclass/group covers:

Explicit throttling

Informative references
Attention is drawn to the following places, which may be of interest for search:

Throttling in mixers

{Intermittent extrusion}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Articles of definite length

Feeding the material to the extruder
Informative references
Attention is drawn to the following places, which may be of interest for search:

Handling material to be moulded

Injection moulding, feeding

Conveying of bulk material

Raw material dosing
Definition statement
This subclass/group covers:

Raw material dosing in proximity to or during the feeding, e.g.

- handling and feeding pre-formed parts in the correct velocity

- handling and/or mixing materials in foreseen quantities and feeding these.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Control aspects of dosing

Control aspects of volume

Control aspects of weight

Mixing, kneading

Making preforms

Feeding in measured doses

Weighing

Raw material pre-treatment while feeding ( pre-treatment of the material to be shaped in general B29B 15/00 ; handling of the material to be shaped in general B29C 31/00 ; B29C 47/78 takes precedence )
Definition statement
This subclass/group covers:

Pre-treatment in proximity to or during feeding, e.g. drying or cleaning

Informative references
Attention is drawn to the following places, which may be of interest for search:

Control aspects of pre-treatment

Conditioning or physical pre-treatment of a material to be shaped

Pre-treatment of a material to be shaped in general

Drying of half products, e.g. preforms

{in solid form, e.g. powder or granules}
Definition statement
This subclass/group covers:

E.g. feeding the main material in solid form

Informative references
Attention is drawn to the following places, which may be of interest for search:

Solid material

B29K105/25

Particle, powder, granule

B29K105/25B

{of preformed parts, e.g. inserts that are fed and transported generally uninfluenced through the extruder or fed directly to the die}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Containing inserts

B29K105/20

Use of materials as reinforcements

B29K201/00- B29K313/00

Use of materials as preformed parts, e.g. inserts

B29K601/00- B29K713/00

{of fibrous, filamentary or filling materials e.g. thin fibrous reinforcements or fillers}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding materials containing continuous reinforcements

B29K105/08

Moulding materials containing short length reinforcements

B29K105/12

Moulding materials containing containing fillers

B29K105/16

Use of materials as reinforcements

B29K201/00- B29K313/00

Use of materials as fillers

B29K401/00- B29K511/00

{in liquid form}
Definition statement
This subclass/group covers:

E.g. feeding additives

Informative references
Attention is drawn to the following places, which may be of interest for search:

Liquid or viscous moulding materials

B29K105/00G

Plasticisers

B29K105/00E14

{in gaseous form}
Definition statement
This subclass/group covers:

E.g. feeding of blowing agents

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding material in a gaseous state

B29K105/00F

Moulding material in plasma state

B29K105/00K

{at several locations, e.g. using several hoppers or using a separate additive feeding}
Definition statement
This subclass/group covers:

E.g. using separate reinforcement feeding

{being adjustable, i.e. having adjustable exit sections}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Flow control means before the exit section

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Exit section

last part of die shaping the material

{using dies or die parts movable in a closed circuit, e.g. mounted on movable endless support (B29C 47/32 takes precedence ) }
Definition statement
This subclass/group covers:

media446.jpg

WO9710092

Informative references
Attention is drawn to the following places, which may be of interest for search:

Casting between endless belts

Compression moulding between endless belts

Foaming between endless belts

Blow moulding of articles of indefinite length using moulds movable in closed circuit

Blow moulding using moulds mounted on movable endless supports

Continuously moving moulds in general

{specially adapted for bringing together components, e.g. melts within the die}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Co-extrusion of multi-component articles

with broad opening, e.g. for sheets
Definition statement
This subclass/group covers:

E.g. extrusion dies for panels or plates

{specially adapted for bringing together components, e.g. melts within the die}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Co-extrusion of multi-component articles

{being} adjustable {i.e. having adjustable exit sections}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Flow control means before the exit section

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Exit section

last part of die shaping the material

{being} adjustable {i.e. having adjustable exit sections}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Flow control means before the exit section

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Exit section

last part of die shaping the material

Multiple annular extrusion nozzles {specially adapted for bringing together components, e.g. melts within the die}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Co-extrusion of multi-component articles

Cross-head annular extrusion nozzles
Definition statement
This subclass/group covers:

Side feeding the nozzle i.e. nozzle axis not on the extruder axis, but normally perpendicular to it or at an angle

Multi-port extrusion nozzles { ( for making granules in the form of filamentary material B29B 9/06) }
Definition statement
This subclass/group covers:

Multiple separate nozzle outlets next to each other.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion followed by under water pelletizing

B29B9/06C

Extrusion of particle, powder, granular shapes

Extrusion of filamentary shapes

Producing filamentary material

Melt blowing

Electro spinning

Special rules of classification within this group

Pure melt-extrusion where the filaments are not shaped/formed by extrusion through the die but with other extrusion aspects should should be allocated the Indexing Code B29C 47/00 but not an inventive or additional classification in B29C 47/30 for this aspect.

Roller-extrusion nozzles
Definition statement
This subclass/group covers:

Rollers shape the material exiting the extruder nozzle - normally nozzle exit at a roller or between rollers

media447.jpg

US6143222

Informative references
Attention is drawn to the following places, which may be of interest for search:

Calendering

Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
Informative references
Attention is drawn to the following places, which may be of interest for search:

Means for plasticising or homogenising in injection moulding

{using gear pumps}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Gear pumps

{Multi stage plasticisers, homogenisers or feeders ( multi stage plasticisers using at least two screws in the same barrel B29C 47/50) }
Definition statement
This subclass/group covers:

E.g. one plasticiser after the other.

References relevant to classification in this group
This subclass/group does not cover:

Multi stage plasticising using two screws after each other in the same barrel

{using a screw extruder and a gear pump}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding using screws and injection ram or piston

{Partial multi-stage}
Definition statement
This subclass/group covers:

Feeding a plasticised melt into another plasticised melt, e.g. feeding one plasticised melt into the middle of an extruder plasticising another melt.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Feeding of the raw material to be extruded

using screws {surrounded by a cooperating barrel}
Definition statement
This subclass/group covers:

Screws or worms that transport, melt, mix and pump the material out through the nozzle and where the interaction between barrel - screw or screw - screw is important.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Handheld extruders

Mixers with screw or helix

Means for plasticising or homogenising using screws in injection moulding

Flow control by valves

Design, e.g. calculations, experiments or theory, e.g. for intermeshing screws, mechanical strength or flow

Explicit throttling

Cleaning or purging

Screws

Screw elements, i.e. element shapes affecting flow

Barrels

Venting

Heating or cooling at plasticising zone

Presses using screws or worms

using at least two {parallel} intermeshing screws {or at least two parallel non-intermeshing screws}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixers with two or more intermeshing devices

{using non-identical or non-mirrored screws}
Definition statement
This subclass/group covers:

E.g. the screws having differing lengths or different screw element types

{using more than two screws (B29C 47/42 takes precedence ) }
Definition statement
This subclass/group covers:

E.g. screws arranged next to each other in a circular configuration

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixers with three or more screws

using sub-screws, e.g. planetary screws
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixers with three or more screws

using axially movable screws {in relation to the barrel}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Axially movable screws in injection moulding

using at least two screws {in the same barrel} , one after the other, e.g. multi stage plasticisers
Informative references
Attention is drawn to the following places, which may be of interest for search:

Mixers with consecutive casings or screws

Multi stage plasticising using separate plasticisers, e.g. screw extruder followed by a gear pump

using rollers or discs
Definition statement
This subclass/group covers:

Plasticising and pumping the material using discs

Informative references
Attention is drawn to the following places, which may be of interest for search:

Roller extrusion nozzles

using press rams or pistons {or accumulators}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding using screws and injection ram or piston

using more than one extruder to feed one die
Definition statement
This subclass/group covers:

E.g. means to combine melt flows, e.g. using adapter blocks.

Informative references
Attention is drawn to the following places, which may be of interest for search:

General arrangement or layout of extrusion plants

{Extruder feed section}
Definition statement
This subclass/group covers:

Constructional details of the section of the extruder that is located around the inlet of material, details of cylinder or screw in that particular location.

{Screws} ( screws characterized by the material or by their manufacturing process B29C 47/0844)
Definition statement
This subclass/group covers:

Details of the construction and layout of the screw.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Screws for mixers

Means for plasticising or homogenising using screws in injection moulding

Injection moulding, details, screws:

Drives, screw supports, bearings

Flow control by valves

Mounting or handling of screws

Exchangeable screw parts or segments, e.g. modular screws

Inserts, i.e. small exchangeable parts, e.g. for replacement due to wear

Manufacturing or material, e.g. coatings, for screws

Design, e.g. calculations, experiments or theory, e.g. for intermeshing screws, mechanical strength or flow

Explicit throttling

Cleaning or purging of screws

Feeding, e.g. blowing agents, through a screw

Screw elements, i.e. element shapes affecting flow

Venting through the screw

Heating or cooling screws

Presses using screws or worms

{characterised by thread details, i.e. by the special shape of a single thread, e.g. by irregularities within one thread}
Definition statement
This subclass/group covers:

E.g. openings, interruptions or changing thread thickness

{characterised by the length of the screw or of a section}
Definition statement
This subclass/group covers:

E.g. section length L/D

Barrels or cylinders
Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding, details, barrels or cylinders

{with irregular inner surfaces}
Definition statement
This subclass/group covers:

Irregular inner surfaces being not simple cylindrical or conical surfaces

Filters; {Screens}
Definition statement
This subclass/group covers:

Filters to prevent contaminants in the melt from reaching the nozzle and ending up in the finished product

Informative references
Attention is drawn to the following places, which may be of interest for search:

Filters in general

Changing filters

Filtering liquids in general

Injection moulding cleaning equipment

Sealings for filters

Flow control, e.g. valves in proximity to filters

Cleaning or purging

Condition, form or state of moulded materials, containing impurities

B29K105/06B

Flow dividers
References relevant to classification in this group
This subclass/group does not cover:

Flow control means, e.g. valves

{comprising means for dividing, distributing and recombining melt flows}
Definition statement
This subclass/group covers:

Divided melts merging before the die zone

References relevant to classification in this group
This subclass/group does not cover:

Static mixers, e.g. breaker plates in the end of the plastizising unit

Non-actuated dynamic mixing devices, e.g. free rotating mixing elements

Flow division and recombination for layer multiplication

{in the die zone, e.g. to create flow homogeneity}
Definition statement
This subclass/group covers:

Divided melts merging in the die zone

References relevant to classification in this group
This subclass/group does not cover:

Flow division and recombination for layer multiplication

Feed-back means
Definition statement
This subclass/group covers:

Melt flow feed back means, i.e. a part of the melt is fed back into the extruder line when still molten

Informative references
Attention is drawn to the following places, which may be of interest for search:

Feed-back in the sense of measuring/controlling/regulating

By-pass means
Definition statement
This subclass/group covers:

Part of the melt by-passes a part of the extruder to re-enter at a later stage

Venting, {drying} or degassing means
Definition statement
This subclass/group covers:

Steam, gas or vapour arising during heating and melting of the material is let out of the extruder in a controlled manner

Informative references
Attention is drawn to the following places, which may be of interest for search:

Venting or degassing means during injection moulding

Flow control by valves

Explicit throttling

Venting or degassing during mixing or kneading

{Vapour stripping}
Definition statement
This subclass/group covers:

Removing a component, e.g. by adding a second component binding to the first component

{Vent constructions, e.g. venting means avoiding melt escape}
Definition statement
This subclass/group covers:

E.g. means for improving venting

{in the extruder apparatus}
Definition statement
This subclass/group covers:

E.g. venting of the melt in a gear pump or in a separate venting chamber

{in screw extruders}
Definition statement
This subclass/group covers:

E.g. venting through a screw, a screw bearing or a feed inlet

Heating or cooling the material to be extruded or the stream of extruded material {or of a preformed part}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Conditioning or physical pre-treatment of a material to be shaped

Pre-treatment of a material to be shaped in general

Raw material pretreatment

Heating or cooling the stream of extruded material {Attention is drawn to Note (3) following the subclass title}
Definition statement
This subclass/group covers:

Heating or cooling of the material having left the extruder nozzle

{cooling drums}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds and cores with heating or cooling means in rolls, calenders or drums

{using a bath, e.g. extruding into an open bath to coagulate or cool the material}
Definition statement
This subclass/group covers:

E.g. using a bath for for coagulatable material

with calibration or sizing
Definition statement
This subclass/group covers:

Finalising shaping of the article while cooling takes place to correct for warp and shrinking

{internally}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping by stretching of blown tubular films using internal mechanical means, e.g. mandrel

Measuring, controlling or regulating
Informative references
Attention is drawn to the following places, which may be of interest for search:

Design of extruder parts, e.g. by modelling based on mathematical theories or experiments

Measuring, controlling or regulating in general

Taking samples

Adaptive control, learning, e.g. fuzzy logic

Special rules of classification within this group

For all documents to be classified in B29C 47/92 for inventive or additional information, all measuring and controlling aspects therein must be identified by adding the relevant codes in the B29C 2947/92 indexing scheme.

In case of classification in the B29C 2947/92 indexing scheme, the allocation of B29C 47/92 as additional information is optional.

Lubricating {, e.g. adding lubrication to the melt}
Definition statement
This subclass/group covers:

Using internal lubrication, e.g. adding a plasticiser, or using external lubrication, e.g. adding a film of lubricating material in the interface between the melt and the extruder, die, calibrator or conveyor.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Lubricating for moulds or cores in general

Lubricating means for injection moulding

Moulding materials containing plasticisers

B29K105/00E14

Liquid or viscous moulding materials

B29K105/00G

Moulding materials having a particular viscosity

B29K105/00N

Special rules of classification within this group

Materials and coatings for calibrators are classified in the same groups as for dies, B29C 47/085, B29C 47/0852

Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor { ( extrusion moulding of tubular films B29C 47/0026 ; enlarging tube ends using pressure difference B29C 57/08) }
Definition statement
This subclass/group covers:

Blow moulding methods, blow moulding apparatus and articles obtained by blow moulding, when these articles are characterised by the blow moulding method.

Simulation of blow moulding or any other simulated aspect related to blow moulding, e.g. simulating heating a preform before blow moulding. This aspect is covered in the main group B29C 49/00

References relevant to classification in this group
This subclass/group does not cover:

Injection a fluid e.g. air in molten plastic

Extrusion blowing of continuous tubular films

Vacuum or pressure forming of sheet like materials

Informative references
Attention is drawn to the following places, which may be of interest for search:

Making of balloon catheters

Metal blow moulding

Making preforms per se

Packaging individual articles in containers or receptacles whereby the machines incorporate means for making the containers

Labelling of blow moulded articles outside the mould

Glass blow moulding

Special rules of classification within this group

- For articles and materials, as much as possible additional classification by adding the Indexing Codes of B29K and B29L is recommended.

- If more then 4 different thermoplastic materials are described in the disclosure then the Indexing Code B29K101/12 should be allocated. In addition only up to 4 of the disclosed uncommon thermoplastic materials are classified (common thermoplastics for blow moulding are PET, PE, PP) by allocating the appropriate Indexing Code as provided in B29K1/00 - B29K101/00.

- Inventive and additional information disclosed in documents to be classified should be identified by allocation the appropriate classification codes of B29C 49/00 - B29C 49/78. In particular attention should be paid to the so called break down Indexing Codes, which are only present at additional information level, but should be allocated if disclosed in the document to be classified.

- If during blow moulding also vacuum is used, or only vacuum is used for deformation of the tubular parison then one or both of the following classification codes are additionally allocated: B29C 2791/006 and/or B29C 2791/007.

- making of balloon catheters by combined operations, e.g. an additional moulding technique to blow moulding is additionally classified in one of the sub groups A61M 25/1027

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Preform or parison

A tubular object obtained by moulding substantially consisting of plastic material, which has to undergo an additional processing step, e.g. blow moulding, to obtain its final shape, examples are: tubes, extruded parisons, two parallel sheets which behave like tubular preforms, injection moulded tubular preforms normally with one end closed.

Blowing

using a pressurized blowing gas to deform the tubular preform or parison; but also applying a vacuum on one side of the tubular article, since the ambient pressure is deforming the tubular preform or parison.

{characterised by the choice of material}
Definition statement
This subclass/group covers:

- Blow moulding processes, whereby their disclosure focuses on the materials or material parameters

Informative references
Attention is drawn to the following places, which may be of interest for search:

Compostions of macromolecular compounds in general

Special rules of classification within this group

If reinforcing material is comprised in the material to be thermoformed, then the following Indexing Codes should additionally be allocated: B29K105/06 - B29K105/22, B29K201/00 - B29K313/02

{for making articles of indefinite length, e.g. corrugated tubes}
Definition statement
This subclass/group covers:

- WO02/36333

media448.jpg

{using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports}
Definition statement
This subclass/group covers:

- Blow moulding processes whereby either only pressure, pressure and vacuum or only vacuum is used during the forming process of indefinite length articles, as long as the preform is three dimensionally deformed.

- WO2004110734

media449.jpg

Special rules of classification within this group

It is highly desirable that all documents classified in B29C 49/0021 the appropriate Indexing Code in B29L23/00 is added to identify the type of tubular product

{using independent mould parts, i.e. the mould parts not being interconnected, e.g. for speeding up the transfer of the moulds to the beginning of the moulding area}
Definition statement
This subclass/group covers:

- EP2045066

media450.jpg

{for making articles having hollow walls}
Definition statement
This subclass/group covers:

- JP60149432

media451.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Hollow walled articles

B29L24/00

{without using a mould}
Definition statement
This subclass/group covers:

- FR2848906

media452.jpg

{Sheet blow-moulding, i.e. using at least two parallel sheets or a folded sheet as a preform}
Definition statement
This subclass/group covers:

- Blow moulding processes, whereby the sheets are first welded due to mould closing at it's periphery and then the blow moulding operation is executed.

-Pressurised fluid, vacuum or pressurised fluid and vacuum can be used for performing the blow moulding operation.

- WO2010109393

media453.jpg

References relevant to classification in this group
This subclass/group does not cover:

Welding and inflating for the production of air filled cushions

Informative references
Attention is drawn to the following places, which may be of interest for search:

Blister packaging

Blister products

Twin sheet forming

Two sheets being thermoformed in separate mould parts and joined together while still in the mould

{characterised by the parison configuration, e.g. nestable (B29C 49/22 takes precedence ) }
Informative references
Attention is drawn to the following places, which may be of interest for search:

Making preforms characterised by structure or composition

Special rules of classification within this group

- The use of the indexing of preforms for blow-moulding bottles, using the coding scheme under B29B 2911/14, is obligatory when the structure of the preform differs from the conventional shape (meaning: one layer, open neck, flange, cylindrical body, closed semispherical end).

- If a preform is claimed and in the description it is mentioned that the preform would be suitable for blow moulding --> then the additional classification code B29C 49/0073 is allocated to this document and the document is additional classified in B29B 11/14.

- If a tubular reheated parison (meaning: has two open ends) is used during the blow moulding process then, the following Indexing Code should be allocated: B29K105/25C6

{Parisons having internal or external ribs}
Definition statement
This subclass/group covers:

Top of Form

EP1998945

media454.png

{the internal ribs being connected to the opposite wall, e.g. forming an internal separating wall}
Definition statement
This subclass/group covers:

media455.jpg

{the parison being partly injected and partly extruded}
Definition statement
This subclass/group covers:

media456.jpg

Extrusion blow-moulding
Informative references
Attention is drawn to the following places, which may be of interest for search:

Making preforms by extrusion moulding

Special rules of classification within this group

- If the parison shape, e.g. the cross section or thickness distribution, is different from the standard cylindrical shape, then the to be classified document should receive a class in B29C 49/0073 as inventive information and only B29C 49/04 as additional information.

- If the parison is multilayered, then the to be classified document should receive a class in B29C 49/22 as inventive information and only B29C 49/04 as additional information.

Injection blow-moulding { ( introducing a fluid into the interior of the injected material which is still in a molten state B29C 45/1704) }
Definition statement
This subclass/group covers:

The injection moulding apparatus, with which the preform is produced,

The blow moulding apparatus, with which the preform is blow moulded.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Injection moulding

Making preforms by injection moulding

Special rules of classification within this group

- The additional information classification B29C 49/06 is allocated to a document to be classified, when the preform is produced by injection moulding but when the injection moulding apparatus is not disclosed in greater detail.

- B29C 49/42 has to be allocated as additional information where appropriate.

- For the heating or cooling of preforms, as much as possible additional classification by adding the Indexing Codes of B29C 49/64, especially B29C 49/6409 and B29C49/B3 is recommended.

{with parison holding means displaceable between injection and blow stations}
Definition statement
This subclass/group covers:

- EP0228106

media457.png

{following an arcuate path, e.g. rotary or oscillating-type}
Definition statement
This subclass/group covers:

- DE10061744

media458.jpg

- JP6238742

media459.jpg

{with the parison axis held in the plane of rotation}
Definition statement
This subclass/group covers:

- US2008118686

media460.jpg

{following a rectilinear path, e.g. shuttle-type}
Definition statement
This subclass/group covers:

- US4540543

media461.jpg

Biaxial stretching during blow-moulding {with or without prestretching}
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Biaxial stretching

stretching in two directions whereby one stretching component must be in longitudinal direction of the preform or in extrusion direction of an extruded parison

{without prestretching}
Definition statement
This subclass/group covers:

Blow moulding processes, whereby the preform length before blow moulding is shorter then the mould cavity. The preform has therefore also a stretching component in the longitudinal direction during the blowing operation.

using mechanical means {for prestretching}
Definition statement
This subclass/group covers:

- FR2516855

media462.jpg

- JP58045030

media463.jpg

- JP58016826

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- GB1501775

media465.png

Stretching rods
Definition statement
This subclass/group covers:

- US2010/252948

media466.jpg

- EP1974891

media467.jpg

Clamps
Definition statement
This subclass/group covers:

- EP0434277

media468.jpg

US4442063

media469.jpg

using pressure difference {for prestretching} , e.g. pre-blowing { (B29C 49/649 takes precedence ) }
Definition statement
This subclass/group covers:

Blow moulding processes, whereby the pressure difference is used to stretch the preform in its longitudinal direction.

- WO2007066516

media470.jpg

FR2550990

media471.jpg

- WO9950047

media472.jpg

using several blowing steps (B29C 49/16 takes precedence )
Definition statement
This subclass/group covers:

- Blow moulding using several blowing steps, whereby between each blowing step for a period of time, depressurisation is being applied, thereby causing a period with atmospheric pressure inside the preform/container.

- EP0692364

media473.jpg

References relevant to classification in this group
This subclass/group does not cover:

Multiple blow moulding steps, whereby one step is used to expand the preform in longitudinal direction

Multiple blow moulding steps followed by additional heat shrinking

Special rules of classification within this group

- Multiple blow moulding steps, with longitudinal streching during each blowing step are additionally classified in B29C 49/08 or one of its subgroups

As example the following document JP59115816 should be classified B29C 49/12 and B29C 49/18.

media474.jpg

of articles having inserts or reinforcements; {Handling of inserts or reinforcements}
Definition statement
This subclass/group covers:

- Auxiliary operations or auxiliary means relating to inserts or reinforcements, e.g. handling or transferring of inserts

Special rules of classification within this group

Details of the location of the insert (on the inside or outside of the final article), handling of the inserts (e.g. feeding into the mould) or treatment of the inserts (e.g. preheating) are identified by the allocation of break down Indexing Codes, which are only present at additional information level.

When details of inserts or reinforcements are indicated, then it is highly desirable to allocate additionally the following classification codes for additional information:

- B29K601/00 - B29K713/02

- B29K201/00- B29K313/02

using multilayered preforms or parisons
Definition statement
This subclass/group covers:

- Multilayered parisons produced by extrusion moulding

- Parisons having loose layers before blow moulding

-EP2065163

media475.jpg

-WO2009144559

media476.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

multilayered plastic containers, e.g. bottles

tubular layered products per se

Special rules of classification within this group

- Specific multilayered aspects of the preform for blow moulding of bottles are additionally classified in B29B 11/14

- If applicable, it is highly desirable to allocate additional classification in B29C 49/0073 for inventive information related to the geometrical distribution or dimensions of the layers

{at least one layer being injected ( injection moulding of multilayered parisons B29C 45/1643 , B29C 45/1646) }
Definition statement
This subclass/group covers:

- US2010227092

media477.jpg

- EP0887170

media478.png

Lining or labelling
Definition statement
This subclass/group covers:

Lining

media479.jpg

- DE102004000046

Labelling

media480.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Lining or sheeting in general

Producing labels

Labelling other then flat surfaces in general

In mould labelled containers

Labels in general e.g. for thermo adhesion

Special rules of classification within this group

If the label itself is specific then the Indexing Code B29L31/744 should be allocated

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Lining

Covering the whole outer and/or inner surface of articles with a heated preform or parision. The heated preform or parison is stretched and three dimensionally deformed.

Labelling

Connecting a label which is inside of a mould to a heated preform or parison while the preform or parison is blow moulded. Often also called "in mould labelling"

{Inserting labels or films into blow-moulds, e.g. in-mould-labellers}
Definition statement
This subclass/group covers:

- US5256365

media481.jpg

- US6264876

media482.png

inner lining of tubes
Definition statement
This subclass/group covers:

- EP0585855

media483.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Coating the interior of hollow articles by extrusion moulding

Lining of internal surfaces by applying preformed layers or sheets of plastic

Blow-moulding apparatus
Special rules of classification within this group

- If the alleged inventive information of the document to be classified is already classified somewhere else then the classification as provided for in B29C 49/28 - B29C 49/40 should be allocated as additional information only.

moving "to and fro"
Definition statement
This subclass/group covers:

- US5976452

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the mould parts moving "hand-over-hand"
Definition statement
This subclass/group covers:

- US4988279

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rotatable about one axis
Definition statement
This subclass/group covers:

- DE102004057102

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US5433916

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mounted on movable endless supports { (B29C 49/0021 takes precedence ) }
Definition statement
This subclass/group covers:

- articles of definitive length, bottles

- US3597516

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- JP3197117

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- DE102008006073

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References relevant to classification in this group
This subclass/group does not cover:

Using moulds movable in a closed path for blow moulding of articles of indefinite length

on co-operating drums
Definition statement
This subclass/group covers:

- DE2210445

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Component parts, details or accessories; Auxiliary operations
Definition statement
This subclass/group covers:

- details of extrusion dies used during blow moulding

- closing parison ends before blow moulding e.g. with a fluid stream or by grippers

- antistatic treatment of preforms

- cleaning of preforms

- sterilisation of preforms

- mould change

- cutting and recycling material

- avoiding malfunctioning

Informative references
Attention is drawn to the following places, which may be of interest for search:

Sterilisation in general

Handling of moulds between a mould store and a moulding machine in general

Maintenance of moulds namely cleaning in general

Extrusion nozzles or dies in general

{Handling means, e.g. transfer, loading or discharging means ( handling of inserts or reinforcements B29C 49/20 ; handling of labels B29C 49/2408) }
Definition statement
This subclass/group covers:

- gripping and holding means for preforms, parisons or blown articles

- adjustable transporting means depending on the size of the preforms, parisons or blown articles

- air conveyers for preforms or blown articles

- orientating unorientated preforms

- feeding of preforms or parisons

- FR2864050

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- EP1334817

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WO0107235

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- EP0856392

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Handling materials in general

{for blown articles}
Definition statement
This subclass/group covers:

- DE19654350

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- US3533132

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{for increasing the space between preforms, e.g. in order to perform the blow moulding step}
Definition statement
This subclass/group covers:

- WO02053350

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- DE19935266

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{Means for deforming the parison prior to the blowing operation (B29C 49/08 takes precedence) }
Definition statement
This subclass/group covers:

- pulling the extruded parison through the mould

- moving the mould or the extruder head while extruding the parison

- air floating for helping feeding of the parison through the mould

- using grippers which deform the parison during extrusion or during transportation

- US2003151170

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- EP0927623

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- EP0714751

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other examples:

EP0693358

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- EP0248306

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- JP63165118

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References relevant to classification in this group
This subclass/group does not cover:

Bending of tubes

{Spreading or extending means}
Definition statement
This subclass/group covers:

- spreading the open end or other parts of the preform or parison by mechanical means or vacuum grippers before blow moulding

- EP1612031

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References relevant to classification in this group
This subclass/group does not cover:

shaping of tube ends

for applying pressure through the walls of an inflated bag
Definition statement
This subclass/group covers:

- EP1859913

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characterised by using a particular environment or blow fluids other than air
Definition statement
This subclass/group covers:

- Inert gas as blowing fluid

- Reactive gas as a blowing fluid

- Sterile gas as a blowing fluid

- Hot gas as a blowing fluid

- Filtered air as a blowing fluid

- Explosive gas mixture as a blowing fluid

- Incompressible blowing fluids (e.g. filling liquid is used as blowing fluid)

- Clean rooms

Informative references
Attention is drawn to the following places, which may be of interest for search:

Method or apparatus for sterilising in general

Cleaning in general

Concurrent cleaning, filling, and closing of bottles without a blow moulding operation

Special rules of classification within this group

- Incompressible blowing fluids which stay in the formed container after blow moulding have to be also classified in B65B 3/022

Moulds
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds characterised by the material or the manufacturing process in general

{with means for locally compressing part(s) of the parison in the main blowing cavity}
Definition statement
This subclass/group covers:

- JP8034052

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{by means of movable mould parts}
Definition statement
This subclass/group covers:

- EP1688233

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- JP11198222

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{with means for closing off parison ends}
Definition statement
This subclass/group covers:

- EP1116572

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- US5799809

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{with means for moulding parts of the parisons in an auxiliary cavity, e.g. moulding a handle}
Definition statement
This subclass/group covers:

- WO2007063155

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- EP1693240

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{with incorporated heating or cooling means}
Definition statement
This subclass/group covers:

- WO2005025835

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- WO03033242

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-

JP2289328

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating or cooling of moulds in general

Special rules of classification within this group

When details of the heating or cooling means are indicated, then it is highly desirable to allocate additionally the following corresponding Indexing Codes for additional information:

having cutting or deflashing means
Definition statement
This subclass/group covers:

-EP1645397

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-US2005199577

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US2006175737

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having decorating or printing means
Definition statement
This subclass/group covers:

- EP1005975

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US2004026355

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds characterised by the shape of the moulding surface in general

for undercut articles
Definition statement
This subclass/group covers:

- EP1908571

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- JP63221020

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{having a recessed undersurface}
Definition statement
This subclass/group covers:

-US2008283533

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- DE1479563

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Opening, closing or clamping means
Definition statement
This subclass/group covers:

- WO2010136667 (cam driven opening and closing means)

media527.jpg

- WO0192168 (mechanical opening closing mechanism)

media528.jpg

FR2790702 (spindle driven [screw driven] opening closing mechanism)

media529.jpg

EP1880826 (fluid driven clamping means via channel 25)

media530.jpg

- US2008031994 (closing and clamping toggle mechanism)

media531.jpg

- FR2856333 (locking mechanism)

media532.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Opening, closing or clamping of moulds in general

Blowing means { (B29C 45/1734 takes precedence ) }
Definition statement
This subclass/group covers:

- WO2009010505

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- JP6218801

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- US3937610

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Synonyms and Keywords

In patent documents the following expressions/words "blowing means", "blow pin", "blowing nozzle" and "blowing mandrel" are often used as synonyms.

Blow-needles
Definition statement
This subclass/group covers:

- EP1053859 (support 30 helps piercing the parison)

media536.jpg

- JP9216277 (retractable blow needle, blow needle has special blow openings)

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- US5078948 (blow needle has special means to facilitate the piercing)

media538.jpg

Venting means
Definition statement
This subclass/group covers:

- US6660216

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- EP0846546

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- JP4345825

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Informative references
Attention is drawn to the following places, which may be of interest for search:

- Venting means for moulds in general: B29C 33/10

Heating or cooling preforms, parisons or blown articles
References relevant to classification in this group
This subclass/group does not cover:

Cooling of preforms after the injection moulding process, meaning using cold preforms for blow moulding process

Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating, cooling or curing in general

Heating of preforms in general

B29B13/00D2

Synonyms and Keywords

In patent documents the following expressions/words "glass transition temperature", "Tg" and "vitreous transition temperature" are often used as synonyms.

{Thermal conditioning of preforms (B29C 49/68 takes precedence ) }
Definition statement
This subclass/group covers:

Heating and cooling preforms before the blow moulding operation.

{by reheating cold preforms in a single stage} (B29C 49/6436 takes precedence ) ]
Definition statement
This subclass/group covers:

- Reheating cold preforms in one continuous uninterrupted heating phase.

-EP0030124

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-WO9703805 (row of preforms are transported through a heating oven)

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{by cooling hot or molten preforms in a single stage (B29C 49/6436 takes precedence ) }
Definition statement
This subclass/group covers:

- Cooling hot or molten preforms in one continuous uninterrupted cooling phase (mainly for injection moulded preforms who do not have the correct blow moulding temperature yet).

- US4180379 (reference number 14 shows a cooling station)

media544.jpg

{producing a temperature differential}
Definition statement
This subclass/group covers:

media545.png

- US5681521

{through the preform length}
Definition statement
This subclass/group covers:

- US5920677

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-

along the preform thickness
Definition statement
This subclass/group covers:

- EP0521773

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{Mandrels or cores specially adapted for heating or cooling preforms}
Definition statement
This subclass/group covers:

- GB2137921

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{in several stages (B29C 49/6409 takes precedence ) }
Definition statement
This subclass/group covers:

- Discontinuous heating having at least one additional phase where the preform is not heated, or even shortly cooled before the next heating phases starts

- DE3908219

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{using several mould cavities for each article}
Definition statement
This subclass/group covers:

- GB1481637 (all moulds are heated to make the next blowing step possible)

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{at least one stage being a heating stage used for shrinking of a preform prior to a subsequent blowing stage}
Definition statement
This subclass/group covers:

- EP0683029

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Cooling by refrigerant introduced into the blown article
Definition statement
This subclass/group covers:

- JP56013141

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- EP1314535

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Ovens specially adapted for heating preforms or parisons
Definition statement
This subclass/group covers:

the heating device (oven) functioning as a whole

Special rules of classification within this group

Details of ovens specially adapted for heating preforms or parisons are classified in B29C 49/64

Removing or ejecting blown articles from the mould
Definition statement
This subclass/group covers:

Means to facilitate the removing or ejecting of blown articles from the mould. These ejecting means are typically located in the mould.

WO2004022311

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- US4155696

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W0 201011031

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References relevant to classification in this group
This subclass/group does not cover:

Means which enter from the outside of the mould to pick up the blown articles

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds in general with means for to facilitate the removal of articles

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

ejecting

separating moulded products from the mould cavity

Deflashing outside the mould
Definition statement
This subclass/group covers:

media557.jpg

- EP1050394

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Deflashing in general

Deflashing the neck portion
Definition statement
This subclass/group covers:

- US2005284275

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- GB1483712

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Neck calibration
Definition statement
This subclass/group covers:

- US4115496

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- US4187070

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Measuring, controlling or regulating
Special rules of classification within this group

Documents classified in B29C 49/78 and subgroups are indexed by allocating additionally the B29C 2949/00 Indexing Codes.

{the blowing pressure}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Control of fluid pressure in general

Testing, e.g. for leaks
Definition statement
This subclass/group covers:

- DE102004061230

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Investigating fluid-tightness of structures

Shaping by thermoforming, {i.e. shaping sheets or sheet like preforms after heating} , e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor { ( blow moulding of tubular preforms B29C 49/00 , deforming of tubular or hollow preforms B29C 67/0014) }
Definition statement
This subclass/group covers:

- shaping of materials in a plastic state by thermoforming

- simulation of thermoforming

- honeycomb structures sheets which are thermoformed with thermoplastic sheets surrounding it as long as the thermoplastic sheets are plastically deformed,

- plates or sheets which are clamped in such a way that they can at least partially slide into the mould when thermoformed

Informative references
Attention is drawn to the following places, which may be of interest for search:

Metal deep-drawing

Surface shaping

Cold deforming of thermoplastics material

Self-reinforcing plastics

Packaging individual articles in containers or receptacles whereby the machines incorporate means for making the containers

Blister packaging

Blister packages

Special rules of classification within this group

- For articles and materials, as much as possible additional classification by adding the Indexing Codes of B29K and B29L is recommended.

- If more then 4 different thermoplastic materials are described in the disclosure then the Indexing Code B29K101/12 should be allocated. In addition only up to 4 of the disclosed uncommon thermoplastic materials are classified (common thermoplastics for thermoforming are PET, PE, PP) by allocating the appropriate Indexing Code as provided in B29K1/00 - B29K101/00.

- Inventive and additional information disclosed in documents to be classified should be identified by allocation the appropriate classification codes of B29C 51/00 - B29C 51/46. In particular attention should be paid to the so called break down Indexing Codes, which are only present at additional information level, but should be allocated if disclosed in the document to be classified.

- If during thermoforming a vacuum, a vacuum and pressure or a pressure is used then one or both of the following classification codes should additionally be allocated: B29C 2791/006 and/or B29C 2791/007.

{characterised by the choice of material}
Definition statement
This subclass/group covers:

- Thermoforming processes, whereby their disclosure focuses on the materials or material parameters

Informative references
Attention is drawn to the following places, which may be of interest for search:

Compositions of macromolecular compounds in general

Special rules of classification within this group

If reinforcing material is comprised in the material to be thermoformed, then the following Indexing Codes should additionally be allocated: B29K201/00 - B29K313/02

{Textile or other fibrous material made from plastics fibres ( combined with plastic layers B29C 51/145 ; compression moulding of reinforced plastic articles in matched moulds B29C 70/46 ; using pressure difference B29C 70/44) }
Definition statement
This subclass/group covers:

- Thermoforming of fabrics or textiles made of thermoplastic material. Fabrics or textiles can be woven or non woven.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping composites

Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres; Making three- dimensional articles by consolidation

Processes for the fixation or treatment of textile materials in three-dimensional forms

Helmets

B29L31/48

Brassieres

B29L31/48E

Self-reinforcing plastics

{for making articles having hollow walls}
Definition statement
This subclass/group covers:

-US2003026929

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Hollow walled articles

B29L24/00

{without using a mould, e.g. ballooning (as prestretching step B29C 51/06) }
Definition statement
This subclass/group covers:

media566.jpg

Combined thermoforming and manufacture of the preform
Definition statement
This subclass/group covers:

- EP2226181

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Combined thermoforming and prestretching, e.g. biaxial stretching
Definition statement
This subclass/group covers:

media568.png

using pressure difference {for prestretching}
Definition statement
This subclass/group covers:

media569.png

Deep drawing or matched-mould forming, i.e. using mechanical means only
Definition statement
This subclass/group covers:

- moulds without counter mould

Top of Form

DE102008025084

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References relevant to classification in this group
This subclass/group does not cover:

Mechanical deformation of paper or cardboard, e.g. deep drawing techniques

{by shaping between complementary mould parts}
Definition statement
This subclass/group covers:

- WO9728942

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{with at least one of the shaping surfaces being made of resilien material, e.g. rubber}
Definition statement
This subclass/group covers:

- FR2640545

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{with at least one of the mould parts comprising independently movable sections (B29C 51/32 and B29C 51/34 take precedence ) }
Definition statement
This subclass/group covers:

media574.png

Forming by pressure difference, e.g. vacuum
Definition statement
This subclass/group covers:

media575.jpg

media576.png

{Twin sheet thermoforming, i.e. deforming two parallel opposing sheets or foils at the same time by using one common mould cavity and without welding them together during thermoforming (B29C 51/267 , B29C 49/0047 take precedence ) }
Definition statement
This subclass/group covers:

-thermoforming processes, whereby two sheets are deformed at the same time by pressure or vacuum in one combined mould cavity, but they are not welded together either before or during the thermoforming operation

of articles having inserts or reinforcements
Definition statement
This subclass/group covers:

JP61193830

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Special rules of classification within this group

When details of inserts are indicated, then it is highly desirable to allocate additionally the following Indexing Codes for additional information:

- B29K601/00 - B29K713/02

using multilayered preforms or sheets
Informative references
Attention is drawn to the following places, which may be of interest for search:

Layered products comprising thermoplastic sheets per se

Special rules of classification within this group

- Thermoformed articles which are decorated with paint or sheets with a paint layer are additionally classified by adding the Indexing Code: B29L31/722

Lining or labelling
Definition statement
This subclass/group covers:

Thermoforming process whereby the lining must be heated and deformed during the lining operation.

media578.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Lining or sheathing in general

Producing of labels

Labelling in general, other then flat surfaces

In mould labelled containers

Labels in general e.g. for thermo adhesion

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Lining

Covering the whole outer and/or inner surface of articles with a heated thermoplastic sheet. The heated sheet is stretched and three dimensionally deformed.

Labelling

Connecting a label, which is for example on the inside of a mould cavity, to a heated preform or sheet while the preform or sheet is thermoformed. Often also called "in mould labelling

{of deep containers or boxes}
Definition statement
This subclass/group covers:

media579.png

{combined with the feeding or the shaping of the lining or the labels ( by injection moulding B29C 45/14008 , B29C 45/1418) }
Definition statement
This subclass/group covers:

- FR2613982

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Label feeding in general

{of a continuous strip}
Definition statement
This subclass/group covers:

- US2482558

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having movable moulds or mould parts
Definition statement
This subclass/group covers:

US4105736

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rotatable about an axis
Definition statement
This subclass/group covers:

- FR2911537

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{mounted on a vacuum drum ( for surface shaping B29C 59/06) }
Definition statement
This subclass/group covers:

- Vacuum, pressure or match mould deforming as long as it is mounted on a drum

-WO2004113073

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Component parts, details or accessories; Auxiliary operations
Informative references
Attention is drawn to the following places, which may be of interest for search:

Sterilisation in general

Handling of moulds between a mould store and a moulding machine in general

Maintenance of moulds namely cleaning

Mounting, exchanging or centering of moulds

{Handling means, e.g. transfer means, feeding means (B29C 51/44 takes precedence ) }
Definition statement
This subclass/group covers:

media586.jpg
media587.jpg
media588.jpg

- JP10305480

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Handling sheet like materials in general

{Clamping means for the sheets, e.g. clamping frames}
Definition statement
This subclass/group covers:

- GB2324268

media590.jpg

{characterised by using a particular environment, e.g. sterile}
Definition statement
This subclass/group covers:

e.g.:

- thermoforming in clean rooms

- using an incompressible fluid for thermoforming

Informative references
Attention is drawn to the following places, which may be of interest for search:

Method or apparatus for sterilising in general

Cleaning in general

for applying pressure through the wall of an inflated bag or diaphragm
Definition statement
This subclass/group covers:

- GB2049535

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-
media592.jpg

Informative references
Attention is drawn to the following places, which may be of interest for search:

Isostatic pressing in compression moulding

Moulds
Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds in general characterised by the material or the manufacturing process

{with sealing means or the like}
Definition statement
This subclass/group covers:

- US3238566

media593.jpg

{with means for forming a rim ( combined with cutting B29C 51/325 ; rim rolling per se B29C 53/34) }
Definition statement
This subclass/group covers:

Top of Form

- GB2187129

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US5641379

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for undercut articles
Definition statement
This subclass/group covers:

media596.jpg

{having recessed undersurfaces}
Definition statement
This subclass/group covers:

media597.jpg

{specially adapted to facilitate the destacking of nestable containers}
Definition statement
This subclass/group covers:

media598.png

specially adapted for vacuum forming {, Manufacture thereof}
Definition statement
This subclass/group covers:

media599.jpg

{Porous moulds}
Definition statement
This subclass/group covers:

- Microporous or sintered moulds

media600.jpg

Opening, closing or clamping means
Definition statement
This subclass/group covers:

media601.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Opening, closing or clamping of moulds in general

Venting means
Definition statement
This subclass/group covers:

- DE29908024U

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Venting means for moulds in general

Heating or cooling
Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating, cooling or curing in general

Heating of preforms in general

B29B13/00D2

Special rules of classification within this group

When details of the heating or cooling means are indicated, then it is highly desirable to allocate additionally the following corresponding Indexing Codes for additional information:

Synonyms and Keywords

In patent documents the following expressions/words "glass transition temperature", "Tg" and "vitreous transition temperature" are often used as synonyms.

{of preforms, specially adapted for thermoforming ( preheating sheets in general B29B 13/023 ; B29C 51/427 takes precedence ) }
Definition statement
This subclass/group covers:

media603.png

{to produce a temperature differential (B29C 51/426 takes precedence ) }
Definition statement
This subclass/group covers:

media604.png

{through the thickness of the preform}
Definition statement
This subclass/group covers:

media605.png

{using a heated fluid}
Definition statement
This subclass/group covers:

- WO2005007386

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{using movable heating devices}
Definition statement
This subclass/group covers:

media607.png

{Cooling of the material with a fluid blast}
Definition statement
This subclass/group covers:

media608.png

{of moulds or mould parts}
Definition statement
This subclass/group covers:

media609.png

Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating or cooling of moulds in general

Special rules of classification within this group

- If the heating or cooling system applied in the thermoforming mould is of general interest, then additional classification in the general groups B29C 33/02 - B29C 33/08 is recommended.

Removing or ejecting moulded articles
Definition statement
This subclass/group covers:

Contains also stacking of articles

media610.jpg
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Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds with means for to facilitate the removal of articles

Stacking of nested articles

{from a support after moulding, e.g. by cutting}
Definition statement
This subclass/group covers:

media612.png

Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor (B29C 61/10 takes precedence )
Informative references
Attention is drawn to the following places, which may be of interest for search:

Covering or wrapping cores by winding webs, tapes or filamentary material

Lining or sheathing by winding sheet or web-like material helically

Lining or sheathing by winding sheet or web-like material spirally

of plates or sheets
Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus for taking-out curl from webs

Winding and joining, e.g. winding spirally { winding in general B65H}
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

Spirally

the successive turns are completely overlapping each other

Helically

the successive turns are partially overlapping each other

Shaping by stretching, e.g. drawing through a die; Apparatus therefor (B29C 61/08 takes precedence )
Definition statement
This subclass/group covers:

Documents describing shaping by stretching, drawing, orienting polymeric articles like films, sheets, webs, tapes, ribbons, bands, strips, slabs, plates, plaques, boards, tubes, hoses etc.

The subgroups define the mechanical and geometrical ways in which stretching is performed.

References relevant to classification in this group
This subclass/group does not cover:

Stretching of fibres, filaments, threads and the like and of textile fabrics

Manufacture of films or sheets characterised by the chemical composition

Informative references
Attention is drawn to the following places, which may be of interest for search:

Film laminates

Producing films characterised by special physical or application properties (e.g. translucent films for light diffusion)

Membranes produced by stretching

Stretch wrapping

Shaping of tube ends, e.g. flanging, belling, closing; Apparatus therefor, {e.g. collapsible mandrels}
References relevant to classification in this group
This subclass/group does not cover:

Shaping a tube locally and then cutting in the deformed area, so that two tubes with shaped ends are obtained

Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping paper or cardboard tube ends

Altering the diameter of tube ends

Forming the tip of catheters

Surface shaping {of articles} e.g. embossing; Apparatus therefor { ( in-mould printing B29C 37/0025 ; by using liquids B29C 71/0009 ; by using gases without chemical reaction B29C 71/009 ; for decorating in general B44 ; abrasive blasting B24C ; chemical aspects C08J 7/00) }
References relevant to classification in this group
This subclass/group does not cover:

Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces, lithographic processes using patterning methods other than those involving the exposure to radiation, e.g. by stamping

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulding articles characterized by the shape of the surface

Shapping composites, comprising fillers only, the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force

Producing rollers or cylinders having an axial length of several times the diameter, e.g. for embossing, pressing or printing

Absorbent pads, characterised by the outer layer being three-dimensional, e.g. embossed, textured

{Component parts, details or accessories; Auxiliary operations}
References relevant to classification in this group
This subclass/group does not cover:

incorporation of release agents in the material to be embossed

Informative references
Attention is drawn to the following places, which may be of interest for search:

using lubricants during embossing

{characterised by the choice of material}
Definition statement
This subclass/group covers:

incorporation of release agents in the material to be embossed

{Forming single grooves or ribs, e.g. tear lines, weak spots ( by moulding B29C 37/0057 ; folding lines B29C 53/06 ; in metal articles B21D 17/00 ; by cutting B26D 3/08) }
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Working by laser beam, removal material, plastics

B23K26/40B10

Cutting work, making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising

Informative references
Attention is drawn to the following places, which may be of interest for search:

Vehicles, arrangements for storing air bag modules, characterised by a tear line for defining a deployment opening

Packages comprising tear-lines provided in a wall portion

Moulding articles characterised by the shape of the surface; moulding single grooves or ribs, e.g. tear lines

by mechanical means, e.g. pressing { (B29C 59/007 takes precedence; embossing expanded porous articles B29C 44/5627) }
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Apparatus or machines for carrying out printing operations with other operations, with embossing

Inking and printing with a printer's forme combined with embossing

Machines or apparatus for embossing decorations or marks, dies

Machines or apparatus for embossing decorations or marks, heated dies

Artists' hand tool for embossing

Processes for producing decorative surface effects, pressing or stamping ornamental designs on surfaces

Processes for producing ornamental structures, stamping

Informative references
Attention is drawn to the following places, which may be of interest for search:

Moulds or cores characterized by the shape of the moulding surface, e.g. ribs, grooves

Shaping by casting, making articles of definite length characterised by the shape of the surface

Compression moulding of article of definite length chatracterised by the shape of the surface

Shaping by swelling, foaming, after-treatment of articles, by mechanical deformation, e.g. embossing

Injection moulding, mould cavity walls provided with means for marking or patterning

Blow moulding moulds having decorating or printing means

Mechanical deformation of paper or cardboard, embossing

Processes for manufacturing semi-permeable membranes; after-treatment of organic or inorganic membranes; mechanical after-treatment

{of profiled articles, e.g. hollow or tubular articles, beams}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Extrusion moulding, producing hollow articles characterised by the shape of the surface, e.g. rough, irregular

B29C47/00D2

{characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor}
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Apparatus or processes specially adapted for the manufacture of record carriers, preparing and using a stamper, e.g. pressing or injection moulding substrates

Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus or processes for manufacturing absorbent pads, mechanical treatment of webs, e.g. for giving them a fibre like appearance, e.g. by embossing

Methods preventing deposition of fouling or of dust, by giving articles subject to fouling a special shape or arrangement (e.g. lotus effect)

Producing optical elements, e.g. lenses, prisms; optical laminates

Holographic processes or apparatus

Producing carriers of records containing fine grooves or impressions, producing optically read record carriers, e.g. optical discs

Curable composition for imprints

{Fibrous surfaces with piles or similar fibres substantially perpendicular to the surface}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Absorbent pads, topsheet characterised by its apertures, e.g. perforations

Compression moulding of articles of indefinite length, characterised by the shape of the surface

Fasteners of the touch-and-close type; making such fasteners made integrally of plastics, obtained by moulding processes

{of layered or coated substantially flat surfaces}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Floor covering on textile basis, e.g. PVC coatings on fibrous felt, characterised by their relief structure obtained by mechanical embossing

using rollers or endless belts
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Absorbent pads, topsheet characterised by its apertures, e.g. perforations

Compression moulding of articles of indefinite length, characterised by the shape of the surface

Fasteners of the touch-and-close type; making such fasteners made integrally of plastics, obtained by moulding processes

{for profiled articles}
Definition statement
This subclass/group covers:

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{for layered or coated substantially flat surfaces}
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Producing optical elements, e.g. lenses, prisms; optical laminates

Ancillary operations in connection with laminating processes, embossing

using vacuum drums { ( for thermoforming B29C 51/225) }
Definition statement
This subclass/group covers:

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Informative references
Attention is drawn to the following places, which may be of interest for search:

Apparatus or processes for manufacturing absorbent pads, mechanical treatment of webs, e.g. for giving them a fibre like appearance, e.g. by embossing

Perforating by non-mechanical means, e.g. by fluid jet

by flame treatment; {using hot gases}
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Pretreatment of surfaces to which liquids or fluent materials are to be applied; by flame

Informative references
Attention is drawn to the following places, which may be of interest for search:

Inking and printing with a printer's forme; printing on plastics, using mechanical, physical or chemical means, e.g. corona discharge, etching or organic solvents, to improve ink retention

{of profiled articles e.g. hollow or tubular articles}
Definition statement
This subclass/group covers:

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by electric discharge treatment ( electrodes H01T)
Definition statement
This subclass/group covers:

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References relevant to classification in this group
This subclass/group does not cover:

Inking and printing with a printer's forme; printing on plastics, using mechanical, physical or chemical means, e.g. corona discharge, etching or organic solvents, to improve ink retention

Pretreatment of surfaces to which liquids or fluent materials are to be applied; by electrical means

Informative references
Attention is drawn to the following places, which may be of interest for search:

Devices providing for corona discharge

Devices providing for corona discharge, corona rings

Devices providing for corona discharge, having pointed electrodes

Physical treatment of fibres, threads, yarns, fabrics, of fibrous goods; corona discharge, low temperature plasma

{of profiled articles, e.g. hollow or tubular articles}
Definition statement
This subclass/group covers:

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{the electrodes being placed on the same side of the mat