| 摘要 |
A microporous plastic film roll production method, comprising the steps of: conveying microporous plastic film having through-holes in its interior by using a plurality of conveyance rollers at least one conveyance roller of which has a surface roughness RzJIS (mum) of 0.3@RzJIS@30 and has a surface made of fluorine resin, silicone rubber, or a composite material containing one of them; and winding it up in a roll. |
