EP 0541552 B1 19940629 - PROCESS AND SPINNING DEVICE FOR MAKING MICROFILAMENTS.
Title (en)
PROCESS AND SPINNING DEVICE FOR MAKING MICROFILAMENTS.
Title (de)
VERFAHREN UND SPINNVORRICHTUNG ZUR HERSTELLUNG VON MIKROFILAMENTEN.
Title (fr)
PROCEDE ET DISPOSITIF DE FILAGE POUR LA PRODUCTION DE MICROFILAMENTS.
Publication
Application
Priority
- DE 3941824 A 19891219
- DE 9000941 W 19901203
Abstract (en)
[origin: US5310514A] PCT No. PCT/DE90/00941 Sec. 371 Date Jun. 19, 1992 Sec. 102(e) Date Jun. 19, 1992 PCT Filed Dec. 3, 1990 PCT Pub. No. WO91/09162 PCT Pub. Date Jun. 27, 1991.An improved process and apparatus are provided for producing fine microfilaments of a melt-spinnable polymeric material having a silk-like character. The molten polymeric material is melt extruded through a plurality of extrusion orifices, is passed from the extrusion orifices while surrounded by a stream of headed air that surrounds and flows parallel with the molten polymeric material, is passed through a solidification zone wherein cooling air is transversely blown to contact the same, and a pulling force is exerted on the resulting solidified microfilamentary material which is applied below the solidification zone so a to accomplish substantial drawing of the polymeric material intermediate the extrusion orifices and its transformation in to a solidified microfilamentary material. The formation at a high rate of 4,000 to 6,000 meters per minute of quality fine microfilaments of less than 1 dtex per filament (e.g., 0.33 dtex) is made possible. Preferably, the stream of heated air that surrounds the molten polymeric material immediately after the melt extrusion is provided at a temperature that approximates the temperature of the molten filamentary material.
IPC 1-7
IPC 8 full level
D01D 4/02 (2006.01); D01D 5/084 (2006.01); D01D 5/088 (2006.01); D01D 5/098 (2006.01); D01F 6/00 (2006.01); D04H 3/16 (2006.01)
CPC (source: EP KR US)
D01D 4/025 (2013.01 - EP US); D01D 5/08 (2013.01 - KR); D01D 5/084 (2013.01 - EP US); D01D 5/088 (2013.01 - KR); D01D 5/0985 (2013.01 - EP US); D04H 3/02 (2013.01 - EP US); D04H 3/16 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU SE
DOCDB simple family (publication)
US 5310514 A 19940510; AT E107971 T1 19940715; DE 3941824 A1 19910627; DE 3941824 C2 19920116; DE 59006327 D1 19940804; EP 0541552 A1 19930519; EP 0541552 B1 19940629; JP 2918332 B2 19990712; JP H05502483 A 19930428; KR 920703889 A 19921218; WO 9109162 A1 19910627
DOCDB simple family (application)
US 86257092 A 19920619; AT 90917481 T 19901203; DE 3941824 A 19891219; DE 59006327 T 19901203; DE 9000941 W 19901203; EP 90917481 A 19901203; JP 50006491 A 19901203; KR 920701460 A 19920619