| abstract |
The present invention is a polyolefin microporous membrane comprising two or more laminated films, at least one surface layer having a thickness of 0.2 µm or more and 5 µm or less, including inorganic particles, and at least another layer containing polyethylene, and A polyolefin microporous membrane having a transmittance of 50 sec / 100 cc or more and 1000 sec / 100 cc or less and a puncture strength of 3.0 N / 20 µm or more is provided.n n n Polyolefin Microporous Membrane, Ion Battery Separator |