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CPC
COOPERATIVE PATENT CLASSIFICATION
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D01D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
NOTE
-
Attention is drawn to the note following the title of Class D01.

Apparatus specially adapted for the manufacture of carbon filaments are classified in group D01F 9/12

WARNING
-
The following IPC groups are not used in the CPC scheme. Subject matter covered by these groups is classified in the following CPC groups:
D01D 5/10 covered by D01D 5/08 and subgroups

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D01D 1/00
Treatment of filament-forming or like material (working of plastics or substances in a plastic state, in general B29)
D01D 1/02
.
Preparation of spinning solutions
D01D 1/04
.
Melting filament-forming substances
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D01D 1/06
.
Feeding liquid to the spinning head (constructions of pumps F04)
D01D 1/065
. .
{
Addition and mixing of substances to the spinning solution or to the melt; Homogenising
}
D01D 1/09
. .
Pressure, temperature or feeding rate regulation
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D01D 1/10
.
Filtering or de-aerating the spinning solution or melt
D01D 1/103
. .
{
De-aerating
}
D01D 1/106
. .
{
Filtering
}
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D01D 4/00
Spinnerette packs; Cleaning thereof (
{
D01D 5/0069
}
, D01D 5/24, D01D 5/253, D01D 5/28 take precedence)
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D01D 4/02
.
Spinnerettes (alloys therefor C22C)
D01D 4/022
. .
{
Processes or materials for the preparation of spinnerettes
}
D01D 4/025
. .
{
Melt-blowing or solution-blowing dies
}
D01D 4/027
. .
{
Spinnerettes containing inserts
}
D01D 4/04
.
Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B)
D01D 4/06
.
Distributing spinning solution or melt to spinning nozzles
D01D 4/08
.
Supporting spinnerettes or other parts of spinnerette packs
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D01D 5/00
Formation of filaments, threads, or the like
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D01D 5/0007
.
{
Electro-spinning (non-woven fabrics produced by electro-spinning D04H 1/728)
}
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D01D 5/0015
. .
{
characterised by the initial state of the material
}
D01D 5/0023
. . .
{
the material being a polymer melt
}
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D01D 5/003
. . .
{
the material being a polymer solution or dispersion (D01D 5/0053 takes precedence)
}
D01D 5/0038
. . . .
{
the fibre formed by solvent evaporation, i.e. dry electro-spinning
}
D01D 5/0046
. . . .
{
the fibre formed by coagulation, i.e. wet electro-spinning
}
D01D 5/0053
. . .
{
the material being a low molecular weight compound or an oligomer, and the fibres being formed by self-assembly
}
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D01D 5/0061
. .
{
characterised by the electro-spinning apparatus
}
D01D 5/0069
. . .
{
characterised by the spinning section, e.g. capillary tube, protrusion or pin
}
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D01D 5/0076
. . .
{
characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid (D01D 5/0046 takes precedence)
}
D01D 5/0084
. . . .
{
Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
}
D01D 5/0092
. . .
{
characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
}
D01D 5/02
.
Starting the formation
D01D 5/04
.
Dry spinning methods
{
(D01D 5/0038 takes precedence)
}
D01D 5/06
.
Wet spinning methods
{
(D01D 5/0046 takes precedence)
}
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D01D 5/08
.
Melt spinning methods
{
(D01D 5/0023 takes precedence)
}
D01D 5/082
. .
{
of mixed yarn
}
D01D 5/084
. .
Heating filaments, threads or the like, leaving the spinnerettes
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D01D 5/088
. .
Cooling filaments, threads or the like, leaving the spinnerettes
D01D 5/0885
. . .
{
by means of a liquid
}
D01D 5/092
. . .
in shafts or chimneys
D01D 5/096
. .
Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
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D01D 5/098
. .
with simultaneous stretching
D01D 5/0985
. . .
{
by means of a flowing gas (e.g. melt-blowing)
}
D01D 5/10
. .
using organic materials
WARNING
-
This group is no longer used for the classification of new documents as from July 2011. The backlog of this group is being continuously reclassified to D01D 5/08 and its subgroups

D01D 5/11
.
Flash-spinning
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D01D 5/12
.
Stretch-spinning methods (finishing by stretching D02J 1/22)
{
D01D 5/098 takes precedence
}
D01D 5/14
. .
with flowing liquid
{
or gaseous
}
 stretching media
{
, e.g. solution-blowing
}
D01D 5/16
. .
using rollers, or like mechanical devices, e.g. snubbing pins
D01D 5/18
.
by means of rotating spinnerets
D01D 5/20
.
with varying denier along their length
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D01D 5/22
.
with a crimped or curled structure; with a special structure to simulate wool (producing crimped or curled effect in filaments or threads after formation D02G 1/00)
D01D 5/23
. .
by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
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D01D 5/24
.
with a hollow structure; Spinnerette packs therefor (D01D 5/38 takes precedence; producing tubes of plastic material B29D; addition of agents forming hollow filaments D01F 1/08)
D01D 5/247
. .
Discontinuous hollow structure or microporous structure
D01D 5/253
.
with a non-circular cross section; Spinnerette packs therefor (D01D 5/38 takes precedence)
D01D 5/26
.
Formation of staple fibres (by flash-spinning D01D 5/11)
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D01D 5/28
.
while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
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D01D 5/30
. .
Conjugate filaments; Spinnerette packs therefor
D01D 5/32
. . .
Side-by-side structure; Spinnerette packs therefor
D01D 5/34
. . .
Core-skin structure; Spinnerette packs therefor
D01D 5/36
. . .
Matrix structure; Spinnerette packs therefor
D01D 5/38
.
Formation of filaments, threads, or the like during polymerisation
D01D 5/40
.
by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring
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D01D 5/42
.
by cutting films into narrow ribbons or filaments or by fibrillation of films
{
or filaments
}
D01D 5/423
. .
{
by fibrillation of films or filaments
}
D01D 5/426
. .
{
by cutting films
}
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D01D 7/00
Collecting the newly-spun products
{
(D01D 5/0076 takes precedence)
}
(collecting newly-spun products with the imparting of twist D01H)
D01D 7/02
.
in centrifugal spinning pots
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D01D 10/00
Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected (finishing D02J)
D01D 10/02
.
Heat treatment (heating for finishing D02J 13/00)
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D01D 10/04
.
Supporting filaments or the like during their treatment
D01D 10/0409
. .
{
on bobbins
}
D01D 10/0418
. .
{
as cakes or similar coreless thread packages
}
D01D 10/0427
. .
{
as hanks
}
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D01D 10/0436
. .
{
while in continuous movement (forwarding filamentary material B65H 51/00)
}
D01D 10/0445
. . .
{
using rollers with mutually inclined axes
}
D01D 10/0454
. . .
{
using reels
}
D01D 10/0463
. . .
{
the filaments being maintained parallel
}
D01D 10/0472
. . .
{
the filaments being supported on endless bands
}
D01D 10/0481
. . .
{
the filaments passing through a tube
}
D01D 10/049
. .
{
as staple fibres
}
D01D 10/06
.
Washing or drying
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D01D 11/00
Other features of manufacture
D01D 11/02
.
Opening bundles to space the threads or filaments form one another
D01D 11/04
.
Fixed guides
D01D 11/06
.
Coating with spinning solutions or melts
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D01D 13/00
Complete machines for producing artificial threads
D01D 13/02
.
Elements of machines in combination
This page is owned by Office of Patent Classification.
Last Modified: 04/16/2013 4:31:16 PM