发明名称 |
Method and apparatus for manufacturing an electret filter medium. |
摘要 |
The present invention relates to a continuous method for manufacturing an electret filter medium from dielectric material having an open or porous structure, said method comprising the steps of continuously feeding a web of dielectric material with a substantially closed dielectric foil adjacent to at least one major face thereof into a corona discharge device, reducing the thickness of the web of dielectric material and charging the web of reduced thickness dielectric material by means of a corona discharge and to apparatus for carrying out said method. |
申请公布号 |
EP0118216(A1) |
申请公布日期 |
1984.09.12 |
申请号 |
EP19840300690 |
申请日期 |
1984.02.03 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
KLAASE, PETRUS T.A. C/O MINNESOTA MINING AND;VAN TURNHOUT, JAN C/O MINNESOTA MINING AND |
分类号 |
B01D39/00;B01D;B01D35/06;B01D39/14;B01D39/16;B01J19/00;B03C;B29C59/10;B29C71/00;D04H1/4291;D04H1/4382;D04H1/50;H01G7/02;H05B7/18 |
主分类号 |
B01D39/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|