Title:
NON-WOVEN FABRIC COMPRISING CELLULOSE FIBERS AND PROCESS FOR PRODUCTION THEREOF, AND SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2012/017954
Kind Code:
A1
Abstract:
A non-woven fabric is prepared, which comprises cellulose fibers having an average fiber diameter of 0.1-50 μm and polyolefin fibers having an average fiber diameter of 1.5 μm or less and has a thickness of 20 μm or less. The polyolefin fibers may be polyethylene fibers having an average fiber diameter of 10-1000 nm and an average fiber length of 1-1000 μm. The ratio of the content of the cellulose fibers to that of the polyolefin fibers (the former/the latter) may be 99.9/0.1 to 10/90 (particularly 70/30 to 20/80) (by weight). This non-woven fabric can exhibit both gas permeability and mechanical strength at the same time even when the non-woven fabric has a small thickness, and may be used as a separator for an electrical storage element.
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Inventors:
OMURA MASAYA (JP)
Application Number:
PCT/JP2011/067487
Publication Date:
February 09, 2012
Filing Date:
July 29, 2011
Export Citation:
Assignee:
DAICEL CHEM (JP)
OMURA MASAYA (JP)
OMURA MASAYA (JP)
International Classes:
D21H13/12; D04H1/42; H01M50/417; H01M50/429; H01M50/489; H01M50/494
Foreign References:
| JPH06240595A | 1994-08-30 | |||
| JP2007231438A | 2007-09-13 | |||
| JPH02259189A | 1990-10-19 |
Attorney, Agent or Firm:
KUWATA Mitsuo et al. (JP)
Atsuo Kuwata (JP)
Atsuo Kuwata (JP)
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Claims: