K&L Gates LLP
Electrically charged filter and mask
Provided is an electrically charged filter which has a high initial filtering efficiency and is not liable to decline in filtering efficiency, by including a liquid-charged nonwoven fabric layer that is charged by application of force via a polar liquid, and a tribo-electrically charged nonwoven fabric layer that is charged by friction between fiber components of a plurality of types.
Japan Vilene Company, Ltd.
A B B B B B
A62B B03C B01D B03C B32B B01D
inventional inventional additional inventional inventional additional
Yuichirou Masami
Takashima Takeuchi