EP 2885447 A1 20150624 - MELT-SPINNING PROCESS AND MELT-SPINNING APPARATUS FOR PRODUCING A CRIMPED YARN
Title (en)
MELT-SPINNING PROCESS AND MELT-SPINNING APPARATUS FOR PRODUCING A CRIMPED YARN
Title (de)
SCHMELZSPINNVERFAHREN UND SCHMELZSPINNVORRICHTUNG ZUR HERSTELLUNG EINES GEKRÄUSELTEN FADENS
Title (fr)
PROCÉDÉ DE FILAGE PAR FUSION ET DISPOSITIF DE FILAGE PAR FUSION, DESTINÉS À PRODUIRE UN FIL FRISÉ
Publication
Application
Priority
- DE 102012016368 A 20120817
- DE 102012021142 A 20121027
- EP 2013066607 W 20130808
Abstract (en)
[origin: WO2014026902A1] The invention relates to a melt-spinning process and apparatus for producing a crimped yarn. A spinneret means is used to spin a thermoplastic polymer into a filament bundle which is cooled down, drawn and, in a stuffer box, compressed into a yarn plug. The yarn plug is resolved into a crimped yarn, which is wound up to form a package. To maximize the crimp stability of the yarn, amorphous portions in the molecular structure of the post-drawing yarn material are avoided. This is achieved according to the invention by a relaxation treatment after the drawing step and before the compressing step by maintaining a minimum yarn pull force of > 0.05 cN/dtex at a relaxation temperature in the range from 120°C to 245°C.
IPC 8 full level
D01D 5/22 (2006.01); D01D 10/02 (2006.01); D02G 1/12 (2006.01); D02J 13/00 (2006.01)
CPC (source: CN EP US)
D01D 5/22 (2013.01 - CN EP US); D01D 10/02 (2013.01 - CN EP US); D02G 1/12 (2013.01 - CN EP US); D02G 1/127 (2013.01 - EP US); D02G 1/168 (2013.01 - EP US); D02G 3/22 (2013.01 - US); D02J 1/22 (2013.01 - EP US); D02J 13/00 (2013.01 - CN); D02J 13/005 (2013.01 - EP US); Y10T 428/2922 (2015.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2014026902 A1 20140220; CN 104583471 A 20150429; CN 104583471 B 20171110; EP 2885447 A1 20150624; JP 2015529287 A 20151005; US 2015218733 A1 20150806
DOCDB simple family (application)
EP 2013066607 W 20130808; CN 201380043818 A 20130808; EP 13747387 A 20130808; JP 2015526939 A 20130808; US 201314421314 A 20130808