Title:
FIBERS FOR ARTIFICIAL HAIR
Document Type and Number:
WIPO Patent Application WO/2018/037706
Kind Code:
A1
Abstract:
Provided are fibers for artificial hair which each retain a wavy shape and which render free changes in hairstyle possible at home.
The fibers for artificial hair according to the present invention each have a retention of flexural rigidity, as defined by numerical equation (1), of 40-80% and a degree of heat shrinkage, as defined by numerical equation (2), of 0.0-5.0%.
Retention of flexural rigidity (%) = 100×{(flexural rigidity after 24-hour conditioning at 30°C and 90% RH)/(flexural rigidity after 24-hour conditioning at 23°C and 50% RH) (1)
Degree of heat shrinkage (%) = 100×{(length before heat treatment)-(length after 5-minute heat treatment at 155°C)}/(length before heat treatment) (2)
Inventors:
HORIHATA ATSUSHI (JP)
TAKEI ATSUSHI (JP)
SUZUKI RENTAROH (JP)
TAKEI ATSUSHI (JP)
SUZUKI RENTAROH (JP)
Application Number:
PCT/JP2017/023558
Publication Date:
March 01, 2018
Filing Date:
June 27, 2017
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
A41G3/00
Domestic Patent References:
| WO2015056629A1 | 2015-04-23 | |||
| WO2010119758A1 | 2010-10-21 | |||
| WO2010038679A1 | 2010-04-08 |
Foreign References:
| JP2008002041A | 2008-01-10 | |||
| JP2012251256A | 2012-12-20 | |||
| JP2010047846A | 2010-03-04 |
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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