发明名称 |
Process for the production of a porous film having high bursting strength. |
摘要 |
Process for the production of a film having improved bursting strength by applying a recessed line pattern to a porous film produced from a solution of polyethene and from which the solvent has been removed, at a temperature below the melting point of the polyethene, and subsequently stretching the film biaxially with a degree of stretching of at least 2 x in each of the two directions, the surface area of the film increasing by at least a factor 8, and a porous film having high bursting strength.
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申请公布号 |
EP0550115(A2) |
申请公布日期 |
1993.07.07 |
申请号 |
EP19920204112 |
申请日期 |
1992.12.29 |
申请人 |
DSM N.V. |
发明人 |
FORTUIN, HENRICUS MATHEUS;FLEISCHEUER-NELISSEN, GERTRUDA PASCAL PETRONELLA |
分类号 |
B01D67/00;B01D71/26;B29C39/02;B29C55/00;B29C55/12;B29C59/02;B29D7/01;B29K105/04;B29L31/14;C08J9/28 |
主分类号 |
B01D67/00 |
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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