EP 1954859 A1 20080813 - PROCESS FOR PRODUCING SHEATH-CORE STAPLE FIBRE WITH A THREE-DIMENSIONAL CRIMP, AND CORRESPONDING SHEATH-CORE STAPLE FIBRE
Title (en)
PROCESS FOR PRODUCING SHEATH-CORE STAPLE FIBRE WITH A THREE-DIMENSIONAL CRIMP, AND CORRESPONDING SHEATH-CORE STAPLE FIBRE
Title (de)
VERFAHREN ZUR HERSTELLUNG VON KERN-MANTEL-STAPELFASERN MIT EINER DREIDIMENSIONALEN KRÄUSELUNG SOWIE EINE DERARTIGE KERN-MANTEL-STAPELFASER
Title (fr)
PROCEDE DE FABRICATION DE FIBRES COURTES AYANT UNE STRUCTURE NOYAU-GAINE AVEC UNE FRISURE TRIDIMENSIONNELLE ET FIBRE COURTE AYANT UNE STRUCTURE NOYAU-GAINE AINSI OBTENUE
Publication
Application
Priority
- EP 2006010564 W 20061103
- DE 102005052857 A 20051107
Abstract (en)
[origin: WO2007051633A1] The invention relates to a process for producing sheath-core staple fibre with a three-dimensional crimp, and to corresponding sheath-core staple fibre. In this process the fibre, with a symmetrical sheath-core arrangement, is extruded from two different polymer melts, with one polymer component, A, for the core and one polymer component, B, for the sheath. In order to maximize the intensity of the three-dimensional crimping in the fibre, the fibre is cooled with a sharp stream of cooling air, with a quench air velocity of at least 3 m/sec, and, after the fibres have been bundled to a tow, the multi-stage treatment takes place in a fibre line at a maximum temperature load which is below the glass transition temperature of the polymer component B in the sheath of the fibre. In this way it is possible, after the multi-stage treatment and before the cutting of the fibre, to achieve a high degree of three-dimensional crimp.
IPC 8 full level
D01D 5/34 (2006.01); D01D 5/088 (2006.01); D01D 5/22 (2006.01); D01D 5/24 (2006.01); D01F 8/06 (2006.01); D01F 8/14 (2006.01); D04H 1/4291 (2012.01); D04H 1/435 (2012.01); D04H 1/541 (2012.01)
CPC (source: EP US)
D01F 8/06 (2013.01 - EP US); D01F 8/14 (2013.01 - EP US); Y10T 428/2909 (2015.01 - EP US); Y10T 442/612 (2015.04 - EP US); Y10T 442/636 (2015.04 - EP US)
Citation (search report)
See references of WO 2007051633A1
Designated contracting state (EPC)
DE IT
DOCDB simple family (publication)
DE 102005052857 A1 20070510; CN 101305118 A 20081112; EP 1954859 A1 20080813; JP 2009515061 A 20090409; US 2009124155 A1 20090514; WO 2007051633 A1 20070510
DOCDB simple family (application)
DE 102005052857 A 20051107; CN 200680041433 A 20061103; EP 06806673 A 20061103; EP 2006010564 W 20061103; JP 2008539309 A 20061103; US 11497308 A 20080505