Title:
MICROPOROUS POLYOLEFIN MEMBRANE, MULTILAYER MICROPOROUS POLYOLEFIN MEMBRANE, LAMINATED MICROPOROUS POLYOLEFIN MEMBRANE AND SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2018/164057
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a microporous polyolefin membrane which is capable of stably detecting defects including scratches and pin holes even if the microporous polyolefin membrane is reduced in thickness. The present invention is a microporous polyolefin membrane which has a light transmittance of 40% or less at a wavelength of 660 nm, while having at least one of the characteristics (1) and (2).
(1) The weight per square meter is 3.0 g/m2 or less.
(2) The film thickness is 4 μm or less.
Inventors:
KUBOTA TAKASHI (JP)
KANEDA TOSHIHIKO (JP)
CHEN YANZI (JP)
KANEDA TOSHIHIKO (JP)
CHEN YANZI (JP)
Application Number:
PCT/JP2018/008336
Publication Date:
September 13, 2018
Filing Date:
March 05, 2018
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08J9/28; B32B5/18; B32B27/32; C08J9/00; H01M50/417; H01M50/489; H01M50/491
Domestic Patent References:
| WO2015194504A1 | 2015-12-23 |
Foreign References:
| JP2015228358A | 2015-12-17 | |||
| JP2003253026A | 2003-09-10 | |||
| JP2004149637A | 2004-05-27 |
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