| 发明名称 |
Electret filter media |
| 摘要 |
An electret filter media, and mask, that is made of a nonwoven web of thermoplastic microfibers. The thermoplastic microfibers are of substantially the same composition, are nonconductive, and have an effective fiber diameter less than about 15 micrometers. The nonwoven web also has sufficient unpolarized trapped charge to exhibit an initial filtration quality factor of at least 0.31 when measured under the DOP Penetration and Pressure Drop Test.
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| 申请公布号 |
US6119691(A) |
申请公布日期 |
2000.09.19 |
| 申请号 |
US19970865362 |
申请日期 |
1997.05.29 |
| 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;(IPC1-7):A62B18/02 |
主分类号 |
B01D39/14 |
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