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Patent Searching and Data


Title:
CORE-SHEATH COMPOSITE FIBER FOR ARTIFICIAL HAIR AND HEADDRESS PRODUCT COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2018/179803
Kind Code:
A1
Abstract:
In one embodiment, the present invention relates to a core-sheath composite fiber for artificial hair configured from a core section (20) and a sheath section (10) and characterized in that: the core-to-sheath ratio in terms of area ratio is core:sheath=2:8-7:3; eccentricity is at least 5%; the fiber has a flat multi-lobar cross-sectional shape; in the fiber cross-section, the ratio of the length (L) of the major axis (12) of the fiber cross-section to the length (S1) of a first minor axis (13) of the fiber cross-section is 1.10 to 3.00 and in the fiber cross-section, the ratio of the length (Lc) of the major axis (22) of the core section to the length (Sc) of a first minor axis (23) of the core section is 1.10 to 3.00; and the major axis direction of the fiber cross-section roughly coincides with the major axis direction of the core section. The present invention also relates to a headdress product comprising said core-sheath composite fiber for artificial hair. According to the above configuration, the present invention provides: a core-sheath composite fiber for artificial hair that has a feel and appearance similar to human hair, has good curling properties without requiring curl-setting, and very high curl retention; and a headdress product comprising the same.

Inventors:
YASUTOMO NORIKAZU
SAKAMOTO GENTA
FUJINAGA HIROSHI
Application Number:
PCT/JP2018/003154
Publication Date:
October 04, 2018
Filing Date:
January 31, 2018
Export Citation:
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Assignee:
KANEKA CORP (JP)
International Classes:
A41G3/00; D01F8/14
Domestic Patent References:
WO2006087911A12006-08-24
Foreign References:
JPS4912312B11974-03-23
JPS4536854B11970-11-24
JPS6149402B21986-10-29
JPH10168647A1998-06-23
JP2006316395A2006-11-24
JPS4813277U1973-02-14
JP6034966B22016-11-30
JP2006241665A2006-09-14
JP2002129432A2002-05-09
Other References:
See also references of EP 3603432A4
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (JP)
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