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Patent Searching and Data


Title:
POLYOLEFIN MICROPOROUS FILM AND BATTERY USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/180713
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polyolefin microporous film which has an excellent coefficient of static friction and well-balanced relationships between the coefficient of static friction and a coefficient of dynamic friction and between a tensile strength and a tensile elongation in the longitudinal direction. The present invention is a polyolefin microporous film wherein the coefficient of static friction in the longitudinal direction relative to a metal surface is 0.7 or less on at least one surface of the film, the ratio of (the coefficient of static friction in the longitudinal direction relative to the metal surface)/(the coefficient of dynamic friction relative to the metal surface) is 2 or more on at least one surface of the film, the coefficient of static friction between the front surfaces of films and the coefficient of static friction between the rear surfaces of the films are different, and the relationship between the tensile strength (kgf/cm2) and the tensile elongation (%) in the longitudinal direction satisfies formula (1). Formula (1): 10 < (tensile strength)/(tensile elongation) < 45

Inventors:
IKOMA KEI (JP)
YOSHIDA MAYUMI (JP)
HARUMOTO KOSUKE (JP)
TOYOTA NAOKI (JP)
Application Number:
PCT/JP2018/010833
Publication Date:
October 04, 2018
Filing Date:
March 19, 2018
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J9/00; C08J9/26; H01G11/52; H01M10/0566; H01M50/494
Domestic Patent References:
WO2015083705A12015-06-11
WO2015182689A12015-12-03
WO2011108539A12011-09-09
WO1993012920A11993-07-08
WO2011108235A12011-09-09
Foreign References:
JPH08311225A1996-11-26
JPH11115084A1999-04-27
JP2016193606A2016-11-17
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