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Patent Searching and Data


Title:
HEAT-BONDABLE COMPOSITE FIBER, METHOD FOR PRODUCING SAME AND NONWOVEN FABRIC USING HEAT-BONDABLE COMPOSITE FIBER
Document Type and Number:
WIPO Patent Application WO/2022/065239
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a heat-bondable composite fiber which is capable of maintaining crimp stability even if high elongation remains, and which provides a nonwoven fabric with excellent bulkiness and shaping workability that enables following to a complicated shape or processing with a high fiber deformation stress; a method for producing this heat-bondable composite fiber; and a nonwoven fabric which uses this heat-bondable composite fiber. A heat-bondable composite fiber which comprises a first component that contains a polyester-based resin and a second component that contains a polyolefin-based resin having a melting point that is lower than the melting point of the polyester-based resin by 15°C or more, and which has an eccentric core-sheath structure wherein, in a cross-section of the fiber perpendicular to the lengthwise direction, the second component occupies the outer periphery of the fiber. This heat-bondable composite fiber has an elongation at break of 200% or more, a three-dimensional apparent crimp, and a crimp elastic modulus of from 85% to 100%.

Inventors:
YONEDA SATOSHI (JP)
Application Number:
PCT/JP2021/034354
Publication Date:
March 31, 2022
Filing Date:
September 17, 2021
Export Citation:
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Assignee:
ES FIBERVISIONS CO LTD (JP)
ES FIBERVISIONS HONG KONG LTD (CN)
ES FIBERVISIONS LP (US)
ES FIBERVISIONS APS (DK)
International Classes:
D01F8/06; D01F8/14; D04H1/541; D04H1/542
Foreign References:
JP2014234559A2014-12-15
JP2011047077A2011-03-10
JP2018172827A2018-11-08
JP2007204901A2007-08-16
JP2008169509A2008-07-24
KR20170079401A2017-07-10
Attorney, Agent or Firm:
KIUCHI Mitsuharu et al. (JP)
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