Title:
POLYOLEFIN MICROPOROUS MEMBRANE, BATTERY SEPARATOR AND PRODUCTION METHOD FOR THESE
Document Type and Number:
WIPO Patent Application WO/2017/110306
Kind Code:
A1
Abstract:
The present invention provides: a polyolefin microporous membrane suited for providing a uniform thickness of porous layer; and a battery separator comprising the polyolefin microporous membrane provided with a uniform thickness of porous layer, and suited for increasing battery capacity. The battery separator comprises a polyolefin microporous membrane whereof the variation width of an F25 value in the length direction is 1 MPa or less, and, on at least one surface thereof, a porous layer containing a fluorine resin and an inorganic particle and having an average thickness T(ave) of 1 to 5 μm. (Here, F25 value represents the value from the division, by the test piece cross section, of the load value when the test piece has been stretched 25% using a tensile tester.)
Inventors:
MIZUNO NAOKI (JP)
SUGATA MASAMI (JP)
SUGATA MASAMI (JP)
Application Number:
PCT/JP2016/083729
Publication Date:
June 29, 2017
Filing Date:
November 14, 2016
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
B32B5/32; C08J9/28; H01M50/406; H01M50/417; H01M50/426; H01M50/443; H01M50/457; H01M50/469; H01M50/489
Domestic Patent References:
| WO2013080701A1 | 2013-06-06 | |||
| WO2014025004A1 | 2014-02-13 | |||
| WO2016080200A1 | 2016-05-26 | |||
| WO2016092993A1 | 2016-06-16 |
Foreign References:
| JP2009249480A | 2009-10-29 | |||
| JP2013530261A | 2013-07-25 | |||
| JP2012500130A | 2012-01-05 | |||
| JP2013142101A | 2013-07-22 | |||
| JP2016143640A | 2016-08-08 |
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