Title:
POLYPROPYLENE FIBER AND METHOD FOR MANUFACTURING POLYPROPYLENE FIBER
Document Type and Number:
WIPO Patent Application WO/2017/018195
Kind Code:
A1
Abstract:
Obtained according to the present invention is a polypropylene fiber that selectively satisfies any of the following requirements: the degree of amorphous orientation being not lower than 85%; the degree of crystalline orientation being not lower than 90%; the degree of crystallinity being 60-75%; the strength being not lower than 7 cN/dtex; the initial elastic modulus being not lower than 100 cN/dtex; the rupture elongation being 10-30%; and the single filament fineness being 3-20 dtex. This polypropylene fiber, in which a crystalline chain and an amorphous chain are highly oriented and that has high strength and high initial elastic modulus, is manufactured through a two-stage drawing method and by controlling the drawing tensile force of the final stage while maintaining production speed.
Inventors:
FUJIE MASAKI (JP)
YAMASHITA TOMOYOSHI (JP)
IKEDA HIRONOBU (JP)
IMAKITA JUNYA (JP)
YAMASHITA TOMOYOSHI (JP)
IKEDA HIRONOBU (JP)
IMAKITA JUNYA (JP)
Application Number:
PCT/JP2016/070497
Publication Date:
February 02, 2017
Filing Date:
July 12, 2016
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
International Classes:
D02J1/22; D01F6/06
Foreign References:
| JP2009007727A | 2009-01-15 | |||
| JP2008266871A | 2008-11-06 | |||
| JPH10183421A | 1998-07-14 | |||
| JP2002020926A | 2002-01-23 |
Other References:
See also references of EP 3327189A4
Attorney, Agent or Firm:
NOGUCHI, Takeo et al. (JP)
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