Meltblown composites and uses thereof

Details Meltblown composites and uses thereof Meltblown composites and uses thereof

B - Operations, Transporting

32

B

B32B 5/14 (2006.01) B01D 39/04 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B32B 5/26 (2006.01) D01D 5/098 (2006.01) D04H 1/00 (2006.01) D04H 1/56 (2006.01) D04H 1/70 (2006.01)

Patent

CA 2283259

A porous composite having an inlet face and an exit face, which composite comprises intermingled melt blown fibers and staple fibers, which has increased filtration efficiency (FE), wherein the intermingled melt blown and staple fibers define a density gradient from coarse pores at the inlet face to fine pores at the exit face; a method for using the composite, a process for manufacturing it and a used composite are disclosed.

Ce composite, qui est poreux, comporte une face d'entrée et une face de sortie, et comprend des fibres obtenues par fusion soufflage et des fibres discontinues enchevêtrées. Le composite se caractérise par une meilleure efficacité de filtration, l'enchevêtrement de fibres obtenues par fusion-soufflage et de fibres discontinues définissant un gradient de densité entre les pores de grande taille situés sur la face d'entrée et les pores de petite taille situés sur la face de sortie. L'invention concerne également un procédé d'utilisation du composite, un procédé de fabrication associé et un composé utilisé.

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