Title:
BICOMPONENT FIBERS, AND NONWOVENS THEREOF, HAVING IMPROVED ELASTIC PERFORMANCE
Document Type and Number:
WIPO Patent Application WO/2019/061267
Kind Code:
A1
Abstract:
A bicomponent fiber having a sheath and a core, wherein: the core comprises at least 50 wt. ％of an ethylene/alpha-olefin block copolymer having a density of 0.860 g/cc –0.885 g/cc and a melt index, I2, of 10 g/10 min to 60 g/10 min； and the sheath comprises at least 50 wt. ％of a propylene-based elastomer having a melt flow ratio, MFR, of 30 g/10 min to 250 g/10 min； wherein the core/sheath viscosity ratio is from 1:1 to 5:1 at a shear rate of 1,000/sto 5,000/s.
Inventors:
CHEN LEX (CN)
MAEHARA YUTAKA (JP)
MAEHARA YUTAKA (JP)
Application Number:
PCT/CN2017/104303
Publication Date:
April 04, 2019
Filing Date:
September 29, 2017
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES LLC (US)
CHEN LEX (CN)
MAEHARA YUTAKA (JP)
CHEN LEX (CN)
MAEHARA YUTAKA (JP)
International Classes:
D01F8/06; D04H3/16
Domestic Patent References:
| WO2003000969A1 | 2003-01-03 |
Foreign References:
| JPH05230751A | 1993-09-07 | |||
| JPH06330442A | 1994-11-29 | |||
| CN102016149A | 2011-04-13 | |||
| JP2000158593A | 2000-06-13 | |||
| CN103201416A | 2013-07-10 | |||
| EP1366224B1 | 2007-10-24 |
Other References:
PENG YING-YING: "Sheath/Composite Fiber Prepared by Prepared by polypropylene and New Polyolefin Elastomer", SYNTHETIC FIBER IN CHINA, no. 2, 25 February 2009 (2009-02-25), pages 17 - 20, XP009520178, ISSN: 1001-7054, DOI: 10.16090/j.cnki.hcxw.2009.02.005
See also references of EP 3688208A4
See also references of EP 3688208A4
Attorney, Agent or Firm:
WU, FENG & ZHANG CO. (CN)
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