| 发明名称 |
METHODS OF MAKING MICROPOROUS POLYMER MATERIALS |
| 摘要 |
<p>Process is disclosed for producing water vapour permeable polymer sheets of improved surface smoothness. A coagulable polymer composition is applied to a dried evenly porous belt which then slides over a trough of non solvent which wets the belt so as to prevent the polymer composition passing right through the belt.</p> |
| 申请公布号 |
CA1007816(A) |
申请公布日期 |
1977.04.05 |
| 申请号 |
CA19720143624 |
申请日期 |
1972.06.01 |
| 申请人 |
PORVAIR LIMITED |
发明人 |
WARWICKER, ERIC A.;HODGKINSON, RONALD |
| 分类号 |
B29C47/00;B29C67/20 |
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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