Global Patent Index - EP 1208253 B1

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

EP 1208253 B1 20040908 (DE)

Application

EP 00951438 A 20000725

Priority

  • DE 19937728 A 19990810
  • EP 0007085 W 20000725

Abstract (en)

[origin: DE19937728A1] HMLS-fibers consisting of a polyester, 0.1 to 2.5 weight % incompatible, thermoplastically workable, amorphous polymeric additive with a glass transition temperature of 90 to 170 DEG C and a melt viscosity ratio relative to the polyester component of 1:1 to 7:1, and 0 to 5.0 weight % of usual additives, whereby the polymeric additive is present in the fibers in the form of fibrils with a mean diameter of </= 80 nm. The invention further relates to a method for the manufacture of HMLS-fibers comprising static mixing and shearing of the polyester and the polymer additive and optionally the other additives. The mixture undergoes spinning at a speed of 2500 to 4000 m/min to produce spun fibers. Said fibers are then stretched, thermally fixed and wound. The concentration of polymer additives is determined as a function of the prescribed spinning rate and the desired refractive index of the spun fibers.

IPC 1-7

D01F 6/92; D01D 5/16

IPC 8 full level

D01D 5/16 (2006.01); D01F 6/92 (2006.01); D02J 1/22 (2006.01)

CPC (source: EP US)

D01D 5/16 (2013.01 - EP); D01F 6/92 (2013.01 - EP); 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)

DE 19937728 A1 20010215; AT 275650 T 20040915; AU 6437200 A 20010305; CN 1168856 C 20040929; CN 1370248 A 20020918; 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; US 6740404 B1 20040525; WO 0111122 A1 20010215

DOCDB simple family (application)

DE 19937728 A 19990810; AT 00951438 T 20000725; AU 6437200 A 20000725; CN 00811645 A 20000725; DE 50007704 T 20000725; EA 200200196 A 20000725; EP 0007085 W 20000725; EP 00951438 A 20000725; JP 2001515364 A 20000725; KR 20027001816 A 20020208; US 4900902 A 20020606