EP 1208253 B1 20040908 - HMLS-FIBERS MADE OF POLYESTER AND A SPIN-STRETCH PROCESS FOR ITS PRODUCTION
Title (en)
HMLS-FIBERS MADE OF POLYESTER AND A SPIN-STRETCH PROCESS FOR ITS PRODUCTION
Title (de)
HMLS-FÄDEN AUS POLYESTER UND SPINNSTRECKVERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
FILS A HAUT MODULE ET FAIBLE RETRAIT EN POLYESTER ET PROCEDE D'ETIRAGE DE FILAMENTS POUR LEUR PRODUCTION
Publication
Application
Priority
- DE 19937728 A 19990810
- EP 0007085 W 20000725
Abstract (en)
[origin: US6740404B1] HMLS filaments consisting of a polyester, from 0.1 to 2.5% by weight of an incompatible, thermoplastic, amorphous, polymeric additive having a glass transition temperature of from 90 to 170° C. and a ratio of its melt viscosity to that of the polyester component of from 1:1 to 7:1, and from 0 to 5.0% by weight of conventional additives, where the polymeric additive is present in the filaments in the form of fibrils having a mean diameter of <=80 NM.Process for the production of these HMLS filaments by static mixing with shearing of the polyester and of the polymeric additive and, optionally, of the additives, spinning of the mixture at a spinning take-off speed of from 2500 to 4000 m/min to give spun filaments which are stretched, heat-set and wound up, where the concentration of the polymeric additive is determined as a function of the pre-specified spinning take-off speed and the desired birefringence of the spun filaments.
IPC 1-7
IPC 8 full level
D01D 5/16 (2006.01); D01F 6/92 (2006.01); D02J 1/22 (2006.01)
CPC (source: EP KR US)
D01D 5/16 (2013.01 - EP US); D01F 6/92 (2013.01 - EP KR US); Y10T 428/2913 (2015.01 - EP US); Y10T 428/2927 (2015.01 - EP US); Y10T 428/2969 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6740404 B1 20040525; AT E275650 T1 20040915; AU 6437200 A 20010305; CN 1168856 C 20040929; CN 1370248 A 20020918; DE 19937728 A1 20010215; DE 50007704 D1 20041014; EA 004429 B1 20040429; EA 200200196 A1 20021031; EP 1208253 A1 20020529; EP 1208253 B1 20040908; JP 2003506587 A 20030218; KR 20020036843 A 20020516; WO 0111122 A1 20010215
DOCDB simple family (application)
US 4900902 A 20020606; AT 00951438 T 20000725; AU 6437200 A 20000725; CN 00811645 A 20000725; DE 19937728 A 19990810; DE 50007704 T 20000725; EA 200200196 A 20000725; EP 0007085 W 20000725; EP 00951438 A 20000725; JP 2001515364 A 20000725; KR 20027001816 A 20020208