Title:
CORE-SHEATH TYPE COMPOSITE FIBER, METHOD FOR MANUFACTURING SAME, AND FIBER AGGREGATE INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2023/191101
Kind Code:
A1
Abstract:
The present invention pertains to core-sheath type composite fibers in each of which a core component and a sheath component are concentrically arranged substantially. The sheath component contains 70 mass% or more of a high density polyethylene. The core component contains 70 mass% or more of a polypropylene. In a differential scanning calorimetry (DSC) method as specified by JIS K 7121:1987, the difference in temperature (melting peak temperature-extrapolated melting starting temperature: Tpm-Tim) between a melting peak temperature (Tpm) of the polypropylene and an extrapolated melting starting temperature (Tim) of the polypropylene as measured at a heating rate of 20°C per minute is 12.0°C or more.
Inventors:
SUGIYAMA TAKASHI (JP)
YAMAMOTO SHOTA (JP)
OKAYA HIROSHI (JP)
YAMAMOTO SHOTA (JP)
OKAYA HIROSHI (JP)
Application Number:
PCT/JP2023/013715
Publication Date:
October 05, 2023
Filing Date:
March 31, 2023
Export Citation:
Assignee:
DAIWA SPINNING CO LTD (JP)
International Classes:
D01F8/06; D04H1/541; D04H1/544
Domestic Patent References:
| WO2015012281A1 | 2015-01-29 | |||
| WO2018181909A1 | 2018-10-04 |
Foreign References:
| JP2006152482A | 2006-06-15 | |||
| JP2020007680A | 2020-01-16 | |||
| JP2003328233A | 2003-11-19 | |||
| JPH0770899A | 1995-03-14 | |||
| JPH02133614A | 1990-05-22 |
Attorney, Agent or Firm:
IKEUCHI & PARTNERS (JP)
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