| 发明名称 |
METHOD OF CHARGING ELECTRET FILTER MEDIA |
| 摘要 |
A method of charging a nonwoven web of thermoplastic microfibers to provide electret filter media is provided. The method includes impinging on a nonwoven web of thermoplastic nonconductive microfibers capable of having a high quantity of trapped charge jets of water or a stream of water droplets at a pressure sufficient to provide the web with filtration enhancing electret charge and drying said web. <IMAGE> |
| 申请公布号 |
EP0714463(B1) |
申请公布日期 |
1999.03.10 |
| 申请号 |
EP19940930403 |
申请日期 |
1994.08.17 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
ANGADJIVAND, SEYED, A.;JONES, MARVIN, E.;MEYER, DANIEL, E. |
| 分类号 |
B01D39/14;A62B7/00;A62B7/10;A62B18/00;A62B18/02;A62B23/02;B01D39/00;B01D39/08;B01D39/16;B03C3/28;D04H1/40;D04H1/42;D04H1/46;D04H1/56;D04H11/00;D04H13/00;D06M10/00;D06M10/02;D06M11/05;H01G7/02 |
主分类号 |
B01D39/14 |
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