发明名称 |
PROCESS FOR PRODUCING POROUS POLYOLEFIN FILM |
摘要 |
<p>A method of producing a polyolefin porous film, including: a step of melt-kneading a resin which contains a polyolefin with a viscosity-average molecular weight of 300,000 or more as a main ingredient, together with a non-reactive gas using an extruder(s) (melt-kneading step); a step of forming the melt-kneaded resin into a non-porous solid resin form having an arbitrary shape (forming step); and a step of making the non-porous solid resin form porous (making-porous step).</p> |
申请公布号 |
EP1400558(A1) |
申请公布日期 |
2004.03.24 |
申请号 |
EP20020726423 |
申请日期 |
2002.05.15 |
申请人 |
ASAHI KASEI KABUSHIKI KAISHA |
发明人 |
AKAISHI, KAZUO;TSUJIOKA, NORIO |
分类号 |
B29C47/00;C08J5/18;(IPC1-7):C08J9/00;B29C41/00;C08K3/00;C08J9/28;C08J9/26;C08J9/12 |
主分类号 |
B29C47/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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