EP 2011906 A4 20091202 - PROCESS FOR PRODUCING CORE/SHEATH CONJUGATE ELASTOMER FIBER

Title (en)

PROCESS FOR PRODUCING CORE/SHEATH CONJUGATE ELASTOMER FIBER

Title (de)

VERFAHREN ZUR HERSTELLUNG EINER ELASTOMEREN KERNMANTELKONJUGATFASER

Title (fr)

PROCÉDÉ DE PRODUCTION D'UNE FIBRE ÉLASTOMÈRE CONJUGUÉE C UR/GAINE

Publication

EP 2011906 A4 20091202 (EN)

Application

EP 07742102 A 20070420

Priority

JP 2007058667 W 20070420
JP 2006118251 A 20060421

Abstract (en)

[origin: EP2011906A1] The present invention provides a process for producing a conjugate fiber that is excellent in strength, stretch elasticity, and transparency. The process includes a step (1) in which an elastomer resin (A) having stretching elasticity and an elastomer resin (B) having stretch elasticity, a permanent elongation of 25-70%, and a tensile elongation of 100-800% are separately melted and subjected to conjugate spinning using a conjugate spinneret having two nozzles so that the elastomer resin (A) forms a core and the elastomer resin (B) form a sheath; a step (2) in which the fiber obtained by composite spinning in the step (1) is heat-treated; and a step (3) in which the fiber heat-treated in the step (2) is stretched.

IPC 8 full level

D01F 8/12 (2006.01); D01F 8/14 (2006.01)

CPC (source: EP KR US)

D01F 8/04 (2013.01 - EP US); D01F 8/12 (2013.01 - KR); D01F 8/14 (2013.01 - KR); Y10T 428/2929 (2015.01 - EP US)

Citation (search report)

[PX] WO 2007032449 A1 20070322 - GUNZE KK [JP], et al
[X] EP 0446377 A1 19910918 - KANEBO LTD [JP]
[X] WO 9839503 A1 19980911 - DU PONT [US]
[X] WO 9819623 A1 19980514 - GILLETTE CANADA [CA], et al
See references of WO 2007123214A1

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 MT NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2011906 A1 20090107; EP 2011906 A4 20091202; CN 101426967 A 20090506; JP 5191381 B2 20130508; JP WO2007123214 A1 20090903; KR 20090006842 A 20090115; US 2009269582 A1 20091029; WO 2007123214 A1 20071101

DOCDB simple family (application)

EP 07742102 A 20070420; CN 200780013886 A 20070420; JP 2007058667 W 20070420; JP 2008512170 A 20070420; KR 20087026818 A 20081031; US 29713807 A 20070420