WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

D01D　MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS

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

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

D01D 1/10 ・Filtering or de-aerating the spinning solution or melt

D01D 1/103 ・・{De-aerating}

D01D 1/106 ・・{Filtering}

D01D 4/00 Spinnerette packs; Cleaning thereof ({D01D 5/0069}, D01D 5/24, D01D 5/253, D01D 5/28 take precedence)

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

D01D 5/00 Formation of filaments, threads, or the like

D01D 5/0007 ・{Electro-spinning (non-woven fabrics produced by electro-spinning D04H 1/728)}

D01D 5/0015 ・・{characterised by the initial state of the material}

D01D 5/0023 ・・・{the material being a polymer melt}

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}

D01D 5/0061 ・・{characterised by the electro-spinning apparatus}

D01D 5/0069 ・・・{characterised by the spinning section, e.g. capillary tube, protrusion or pin}

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)}

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

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

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

D01D 5/11 ・Flash-spinning

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

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

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)

D01D 5/28 ・while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor

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

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}

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

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)

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}

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

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

D01D 13/00 Complete machines for producing artificial threads

D01D 13/02 ・Elements of machines in combination