Title:
POLYESTER-BASED HOLLOW FIBER FOR ARTIFICIAL HAIR, PRODUCTION METHOD THEREFOR, AND HEADDRESS PRODUCT INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2022/137740
Kind Code:
A1
Abstract:
The present invention, in one or more aspects, relates to polyester-based hollow fibers for artificial hair which have a single-fiber fineness of 20 dtex or greater, a degree of hollowness, which is the proportion of the area of the hollow to the area of the whole cross-section of the fiber, of 5-50%, and a degree of shrinkage, after having been heat-treated at 120°C in a tension-free state, of 3% or higher. Thus, polyester-based hollow fibers for artificial hair which, when curled with a hair iron or the like, have satisfactory curl-setting properties without via a cooling time (cooling free) are provided.
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Inventors:
ANAHARA MASARU
Application Number:
PCT/JP2021/037767
Publication Date:
June 30, 2022
Filing Date:
October 12, 2021
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
D01F6/62; A41G3/00; D01D5/088
Domestic Patent References:
| WO2014196643A1 | 2014-12-11 |
Foreign References:
| JP2008285772A | 2008-11-27 | |||
| JP2006336117A | 2006-12-14 | |||
| JP2008007874A | 2008-01-17 | |||
| KR101858480B1 | 2018-05-16 | |||
| KR20030042521A | 2003-06-02 | |||
| CN110257932A | 2019-09-20 | |||
| JP2018154930A | 2018-10-04 |
Attorney, Agent or Firm:
IKEUCHI & PARTNERS (JP)
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