发明名称 |
Method for manufacturing a filter of electrically charged electret fiber material and electret filters obtained according to said method |
摘要 |
A method for forming a filter of electrically charged electret fiber material, consisting of a high molecular weight, nonpolar polymeric substance, comprising drawing, charging, and fibrillating a foil of said high molecular weight substance. The fibrillated foil is wound and then crimping is effected.
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申请公布号 |
US4178157(A) |
申请公布日期 |
1979.12.11 |
申请号 |
US19770862768 |
申请日期 |
1977.12.21 |
申请人 |
VERTO NV |
发明人 |
RIEKE, JOHANNES C;VAN TURNHOUT, JAN |
分类号 |
B01D39/14;B01D39/16;D04H13/00;D04H13/02;D06M10/00;(IPC1-7):B03C3/00;B29C24/00 |
主分类号 |
B01D39/14 |
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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