EP 1988201 A1 20081105 - PROCESS FOR PRODUCTION OF POLYESTER FIBER FOR AIR-LAID NONWOVEN FABRICS
Title (en)
PROCESS FOR PRODUCTION OF POLYESTER FIBER FOR AIR-LAID NONWOVEN FABRICS
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYESTERFASERN FÜR TROCKENVLIESSTOFFE
Title (fr)
PROCÉDÉ DE PRODUCTION DE FIBRE POLYESTER DESTINÉE À DES NONTISSÉS AÉROLIQUES
Publication
Application
Priority
- JP 2007052297 W 20070202
- JP 2006028312 A 20060206
- JP 2006028313 A 20060206
Abstract (en)
An object of the invention is to provide a polyester based fiber for airlaid nonwoven fabrics enabling one to manufacture an airlaid nonwoven fabric which is extremely excellent in airlaid web formability, especially in spinning properties from a screen, is satisfactory in texture and is bulky. This object can be achieved by a manufacturing method of a polyester fiber for airlaid nonwoven fabrics made of, as a fiber forming resin component, a polyester having a fineness of not more than 10.0 dtex or a fiber length of 8.0 mm or more, having a number of crimp of 8.5 peaks/25 mm or more, a percentage of crimp/number of crimp ratio of not more than 0.65 and a crimp modulus of elasticity of 70 % or more and containing 80 % by mole or more of an alkylene terephthalate repeating unit in the whole of repeating units, which includes drawing an undrawn yarn taken up at a spinning rate of not more than 1,500 m/min in a low draw ratio of from 0.60 to 1.20 times at a temperature of at least 10°C higher than a glass transition temperature of the polyester and simultaneously subjecting to a fixed-length heat treatment.
IPC 8 full level
D01F 8/06 (2006.01); D01F 8/14 (2006.01); D04H 1/42 (2012.01); D04H 1/70 (2012.01)
CPC (source: EP US)
D01F 6/62 (2013.01 - EP US); D01F 8/14 (2013.01 - EP US); D02J 1/22 (2013.01 - EP US); D04H 1/42 (2013.01 - EP US); D04H 1/732 (2013.01 - EP US)
Citation (search report)
See references of WO 2007091665A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1988201 A1 20081105; HK 1126260 A1 20090828; MY 144282 A 20110829; TW 200745400 A 20071216; TW I367271 B 20120701; US 2009243141 A1 20091001; WO 2007091665 A1 20070816
DOCDB simple family (application)
EP 07713960 A 20070202; HK 09104692 A 20090522; JP 2007052297 W 20070202; MY PI20082952 A 20070202; TW 96104308 A 20070206; US 27848907 A 20070202