Method for the manufacture of an electret fibrous filter

Details Method for the manufacture of an electret fibrous filter Method for the manufacture of an electret fibrous filter

C - Chemistry, Metallurgy

08

J

18/541, 204/96.2

C08J 3/28 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B29C 71/00 (2006.01) D01D 5/26 (2006.01) D01D 5/42 (2006.01) H01G 7/02 (2006.01)

Patent

CA 1050481

ABSTRACT OF THE DISCLOSURE A method for the manufacture of an electrically charged fibrous filter from a highly molecular non-polar fiber material wherein a film of the fiber material is continuously fed and stretched. At least one side of the stretched film is homopolarly charged by a plurality of corona charging elements. The charged film material is then fibrillated, collected and processed into a filter.

222760

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