1. CPC Sections
  2. CPC Section D
  3. CPC Class D01
  4. CPC Subclass D01D
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
D01D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS [2019-08]
NOTES

  • 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

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
D01D 1/00
Treatment of filament-forming or like material (working of plastics or substances in a plastic state, in general B29) [2013-01]
D01D 1/02
.
Preparation of spinning solutions [2013-01]
D01D 1/04
.
Melting filament-forming substances [2013-01]
D01D 1/06
.
Feeding liquid to the spinning head (constructions of pumps F04) [2013-01]
D01D 1/065
. .
{Addition and mixing of substances to the spinning solution or to the melt; Homogenising} [2013-01]
D01D 1/09
. .
Control of pressure, temperature or feeding rate [2017-02]
D01D 1/10
.
Filtering or de-aerating the spinning solution or melt [2013-01]
D01D 1/103
. .
{De-aerating} [2013-01]
D01D 1/106
. .
{Filtering} [2013-01]
D01D 4/00
Spinnerette packs; Cleaning thereof ({D01D 5/0069}, D01D 5/24, D01D 5/253, D01D 5/28 take precedence) [2013-01]
D01D 4/02
.
Spinnerettes (alloys therefor C22C) [2013-01]
D01D 4/022
. .
{Processes or materials for the preparation of spinnerettes} [2013-01]
D01D 4/025
. .
{Melt-blowing or solution-blowing dies} [2013-01]
D01D 4/027
. .
{Spinnerettes containing inserts} [2013-01]
D01D 4/04
.
Cleaning spinnerettes or other parts of the spinnerette packs (cleaning in general B08B) [2013-01]
D01D 4/06
.
Distributing spinning solution or melt to spinning nozzles [2013-01]
D01D 4/08
.
Supporting spinnerettes or other parts of spinnerette packs [2013-01]
D01D 5/00
Formation of filaments, threads, or the like [2013-01]
D01D 5/0007
.
{Electro-spinning (non-woven fabrics produced by electro-spinning D04H 1/728)} [2013-01]
D01D 5/0015
. .
{characterised by the initial state of the material} [2013-01]
D01D 5/0023
. . .
{the material being a polymer melt} [2013-01]
D01D 5/003
. . .
{the material being a polymer solution or dispersion (D01D 5/0053 takes precedence)} [2013-01]
D01D 5/0038
. . . .
{the fibre formed by solvent evaporation, i.e. dry electro-spinning} [2013-01]
D01D 5/0046
. . . .
{the fibre formed by coagulation, i.e. wet electro-spinning} [2013-01]
D01D 5/0053
. . .
{the material being a low molecular weight compound or an oligomer, and the fibres being formed by self-assembly} [2013-01]
D01D 5/0061
. .
{characterised by the electro-spinning apparatus} [2013-01]
D01D 5/0069
. . .
{characterised by the spinning section, e.g. capillary tube, protrusion or pin} [2013-01]
D01D 5/0076
. . .
{characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid (D01D 5/0046 takes precedence)} [2013-01]
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} [2013-01]
D01D 5/0092
. . .
{characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields} [2013-01]
D01D 5/02
.
Starting the formation [2013-01]
D01D 5/04
.
Dry spinning methods {(D01D 5/0038 takes precedence)} [2013-01]
D01D 5/06
.
Wet spinning methods {(D01D 5/0046 takes precedence)} [2013-01]
D01D 5/08
.
Melt spinning methods {(D01D 5/0023 takes precedence)} [2013-01]
D01D 5/082
. .
{of mixed yarn} [2013-01]
D01D 5/084
. .
Heating filaments, threads or the like, leaving the spinnerettes [2013-01]
D01D 5/088
. .
Cooling filaments, threads or the like, leaving the spinnerettes [2013-01]
D01D 5/0885
. . .
{by means of a liquid} [2013-01]
D01D 5/092
. . .
in shafts or chimneys [2013-01]
D01D 5/096
. .
Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes [2013-01]
D01D 5/098
. .
with simultaneous stretching [2013-01]
D01D 5/0985
. . .
{by means of a flowing gas (e.g. melt-blowing)} [2013-01]
​
D01D 5/10
. .
using organic materials [2013-01]
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 [2013-01]
D01D 5/12
.
Stretch-spinning methods ({D01D 5/098 takes precedence} finishing by stretching D02J 1/22) [2013-01]
D01D 5/14
. .
with flowing liquid {or gaseous} stretching media {, e.g. solution-blowing} [2013-01]
D01D 5/16
. .
using rollers, or like mechanical devices, e.g. snubbing pins [2013-01]
D01D 5/18
.
by means of rotating spinnerets [2013-01]
D01D 5/20
.
with varying denier along their length [2013-01]
D01D 5/22
.
with a crimped or curled structure; with a special structure to simulate wool (producing crimped or curled effects in filaments or threads after formation D02G 1/00) [2017-08]
D01D 5/23
. .
by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes [2013-01]
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) [2013-01]
D01D 5/247
. .
Discontinuous hollow structure or microporous structure [2013-01]
D01D 5/253
.
with a non-circular cross section; Spinnerette packs therefor (D01D 5/38 takes precedence) [2013-01]
D01D 5/26
.
Formation of staple fibres (by flash-spinning D01D 5/11) [2013-01]
D01D 5/28
.
while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor [2013-01]
D01D 5/30
. .
Conjugate filaments; Spinnerette packs therefor [2013-01]
D01D 5/32
. . .
Side-by-side structure; Spinnerette packs therefor [2013-01]
D01D 5/34
. . .
Core-skin structure; Spinnerette packs therefor [2013-01]
D01D 5/36
. . .
Matrix structure; Spinnerette packs therefor [2013-01]
D01D 5/38
.
Formation of filaments, threads, or the like during polymerisation [2013-01]
D01D 5/40
.
by applying a shearing force to a dispersion or solution of filament formable polymers, e.g. by stirring [2013-01]
D01D 5/42
.
by cutting films into narrow ribbons or filaments or by fibrillation of films {or filaments} [2013-01]
D01D 5/423
. .
{by fibrillation of films or filaments} [2013-01]
D01D 5/426
. .
{by cutting films} [2013-01]
D01D 7/00
Collecting the newly-spun products ({D01D 5/0076 takes precedence;} collecting newly-spun products with the imparting of twist D01H) [2013-01]
D01D 7/02
.
in centrifugal spinning pots [2013-01]
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) [2013-01]
D01D 10/02
.
Heat treatment (heating for finishing D02J 13/00) [2013-01]
D01D 10/04
.
Supporting filaments or the like during their treatment [2013-01]
D01D 10/0409
. .
{on bobbins} [2013-01]
D01D 10/0418
. .
{as cakes or similar coreless thread packages} [2013-01]
D01D 10/0427
. .
{as hanks} [2013-01]
D01D 10/0436
. .
{while in continuous movement (forwarding filamentary material B65H 51/00)} [2013-01]
D01D 10/0445
. . .
{using rollers with mutually inclined axes} [2013-01]
D01D 10/0454
. . .
{using reels} [2013-01]
D01D 10/0463
. . .
{the filaments being maintained parallel} [2013-01]
D01D 10/0472
. . .
{the filaments being supported on endless bands} [2013-01]
D01D 10/0481
. . .
{the filaments passing through a tube} [2013-01]
D01D 10/049
. .
{as staple fibres} [2013-01]
D01D 10/06
.
Washing or drying [2013-01]
D01D 11/00
Other features of manufacture [2013-01]
D01D 11/02
.
Opening bundles to space the threads or filaments from one another [2017-08]
D01D 11/04
.
Fixed guides [2013-01]
D01D 11/06
.
Coating with spinning solutions or melts [2013-01]
D01D 13/00
Complete machines for producing artificial threads [2013-01]
D01D 13/02
.
Elements of machines in combination [2013-01]