| 发明名称 |
MANUFACTURE OF ELECTRET FILTER |
| 摘要 |
PURPOSE:To provide a method for manufacturing with high efficiency an electret filter having excellent collecting efficiency. CONSTITUTION:A high molecular compound is formed into a film which is then unwoven to give unwoven yarn. After subjecting the yarn to charging treatment, it is molded into a filter.
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| 申请公布号 |
JPH04330907(A) |
申请公布日期 |
1992.11.18 |
| 申请号 |
JP19910100754 |
申请日期 |
1991.05.02 |
| 申请人 |
MITSUI PETROCHEM IND LTD |
发明人 |
MATSUURA SATOSHI;YOKOYAMA AKIRA;SHINAGAWA YOSHIO |
| 分类号 |
B01D39/00;B01D39/04;B01D39/08;B01D39/14;B03C3/28;B29C35/08;B29C55/06;B29C71/04;C07C51/42;H01G7/02 |
主分类号 |
B01D39/00 |
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