| 发明名称 |
FREMGANGSMAADE TIL FREMSTILLING AF ET FILTER AF ET ELEKTRISK LADET ELEKTRET-FIBERMATERIALE |
| 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. |
| 申请公布号 |
DK152016(C) |
申请公布日期 |
1988.07.11 |
| 申请号 |
DK19770005757 |
申请日期 |
1977.12.22 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
RIEKE, JOHANNES CORNELIS;TURNHOUT, JAN VAN |
| 分类号 |
B01D39/14;B01D39/16;D04H13/00;D04H13/02;D06M10/00;(IPC1-7):B01D39/16 |
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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