| abstract |
The present invention is a polyolefin microporous membrane comprising polyethylene and polypropylene as essential components and consisting of two or more laminated films, wherein the polypropylene content in at least one surface layer is more than 50% by weight and 95% by weight or less. It relates to a polyolefin microporous membrane having a content rate of 50% by weight to 95% by weight.n n n n Polyolefin microporous membrane, separator for lithium ion battery, polyethylene, polypropylene |