EP 0455831 B1 19970903 - CRIMPED MULTIFILAMENT AND PRODUCTION THEREOF
Title (en)
CRIMPED MULTIFILAMENT AND PRODUCTION THEREOF
Title (de)
GEKRÄUSELTES MULTIFILAMENT UND VERFAHREN ZUR HERSTELLUNG EINES SOLCHEN FILAMENTS
Title (fr)
MULTIFILAMENT CREPE ET PROCEDE DE PRODUCTION D'UN TEL FILAMENT
Publication
Application
Priority
- JP 9001549 W 19901129
- JP 30900989 A 19891130
Abstract (en)
[origin: EP0455831A1] Crimped multifilament produced from thermoplastic polymer, birefringence measured at outer layer pt. of constituent monofilament is larger than that measured at central part thereof, distribution of birefringence is so postion of smallest birefringence is deviated from centre of fibre axis, and number of random crimps per unit is at least ten. Deg. of crystal growth as determined by wide-angle X-ray diffractometry is at least 0.2 in case of polyamide and at least 0.4 in case of polyester. Pref. method of producing crimped multifilament comprises cooling multifilaments extruded through spinnerets to given temp. by applying aq. liq. to side of each of multifilaments, stretching them 1.0- to 1.5- fold, and subjecting them to liq. jet treatment (in case of nylon) or relaxation heat treatment at 105 deg.C or above.
IPC 1-7
IPC 8 full level
D01D 5/23 (2006.01); D01F 6/60 (2006.01); D01F 6/62 (2006.01); D02G 1/00 (2006.01)
CPC (source: EP)
D01D 5/23 (2013.01); D01F 6/60 (2013.01); D01F 6/62 (2013.01); D02G 1/004 (2013.01)
Citation (examination)
- JP H0197209 A 19890414 - TORAY INDUSTRIES
- JP S5512832 A 19800129 - TOYO BOSEKI
- JP S465533 B1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0455831 A1 19911113; EP 0455831 A4 19920520; EP 0455831 B1 19970903; DE 69031383 D1 19971009; DE 69031383 T2 19980219; WO 9108330 A1 19910613
DOCDB simple family (application)
EP 90917689 A 19901129; DE 69031383 T 19901129; JP 9001549 W 19901129