Filter media having an undulated surface

Details Filter media having an undulated surface Filter media having an undulated surface

B - Operations, Transporting

01

D

B01D 39/16 (2006.01) A41D 13/11 (2006.01) B01D 39/08 (2006.01) B03C 3/30 (2006.01) D04H 1/46 (2006.01) D04H 1/56 (2006.01) D04H 13/00 (2006.01)

Patent

CA 2166612

Filter media is provided. The filter media comprises a web (30) of melt blown microfibers having one surface substantially flat (33) and the other surface having periodic wrinkle-like undulations (32). A method of making the filter media is also provided. The filter media is useful in electret filters when charged.

L'invention concerne un milieu filtrant. Le moyen filtrant est composé d'une bande (3) en microfibres fondues-soufflées, dont une surface est pratiquement plate (33) et dont l'autre surface possède des ondulations périodiques (32) en forme de rides. L'invention concerne également un procédé de fabrication dudit milieu. Celui-ci est efficace dans des filtres à électret quand il est chargé.

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