Title:
ポリオレフィン微多孔膜、電池用セパレータおよびそれらの製造方法
Document Type and Number:
Japanese Patent JP6627967
Kind Code:
B2
Abstract:
A polyolefin microporous membrane on which a porous layer has little fluctuations in thickness and a separator for batteries can adapt to the increase in capacity of a battery. A polyolefin microporous membrane having a range of fluctuation in a F25 value in the width direction of 1 MPa or less, a thickness of 3 μm or more and less than 7 μm and a width of 100 mm or more (wherein the term “F25 value” refers to a value produced by dividing the value of a load applied to a test specimen upon the stretching of the test specimen at a stretching ratio of 25% using a tension tester by the value of a cross-sectional area of the test specimen).
Inventors:
Naoki Mizuno
Masami Sugada
Masami Sugada
Application Number:
JP2018508839A
Publication Date:
January 08, 2020
Filing Date:
March 01, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
C08J9/28; B32B5/24; B32B27/32; C08J7/043; H01G11/52; H01G11/84; H01M50/403; H01M50/406; H01M50/417; H01M50/449; H01M50/489; H01M50/491
Domestic Patent References:
| JP5845381B2 | ||||
| JP6247615A | ||||
| JP2011526547A | ||||
| JP2012500130A |
Foreign References:
| WO2015190487A1 | ||||
| WO2015146580A1 | ||||
| WO2012150618A1 |
Attorney, Agent or Firm:
Patent business corporation glory patent office