Title:
COMPOSITE CRIMP FIBER, AND NON-WOVEN FABRIC COMPRISING THE FIBER
Document Type and Number:
WIPO Patent Application WO/2011/129211
Kind Code:
A1
Abstract:
A composite crimp fiber which has a transverse cross-section having at least two areas, i.e., areas (a) and (b), and has a crimpable cross-sectional shape, wherein the area (a) is composed of a propylene polymer (A) and the area (b) is composed of a propylene-(α-olefin) random copolymer (B), the difference between the Mz/Mw ratio (A) of the propylene polymer (A) and the Mz/Mw ratio (B) of the propylene-(α-olefin) random copolymer (B) is 0.10 to 2.2, and the difference between the melting point [Tm (A)] of the propylene polymer (A) and the melting point [Tm (B)] of the propylene-(α-olefin) random copolymer (B) is more than 10°C; and a non-woven fabric comprising the composite crimp fiber.
Inventors:
MORIMOTO HISASHI (JP)
Application Number:
PCT/JP2011/058503
Publication Date:
October 20, 2011
Filing Date:
April 04, 2011
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
MORIMOTO HISASHI (JP)
MORIMOTO HISASHI (JP)
International Classes:
D01F8/06; D04H1/4291; D04H1/541; D04H3/018; D04H3/147; D04H3/16
Domestic Patent References:
| WO2010050407A1 | 2010-05-06 |
Foreign References:
| JP2007308868A | 2007-11-29 | |||
| JP2002180331A | 2002-06-26 | |||
| JPH02191720A | 1990-07-27 | |||
| US6454989B1 | 2002-09-24 | |||
| JPH07197367A | 1995-08-01 |
Other References:
See also references of EP 2559793A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
Download PDF:
Claims: