Electret filter material

Details Electret filter material Electret filter material

B - Operations, Transporting

01

D

183/109

B01D 39/16 (2006.01) B03C 3/28 (2006.01)

Patent

CA 2015548

ABSTRACT A composite filter material for filtering gases comprising at least one layer of porous polytetrafluoroethylene and at least one layer of fibrous electret material for use to clean the air in facilities such as clean rooms for manufacturing semiconductors, electronic equipment, or medical products.

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