B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 46/52 (2006.01) B01D 24/00 (2006.01) B01D 29/11 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B32B 3/28 (2006.01)
Patent
CA 2428868
A pleatable high efficiency non-woven, gas filtration media is provided. The media has an electrically charged air laid fibrous layer with a thickness between about 2 and 35 mils, and a wet laid fibrous layer having a thickness of between about 5 and about 35 mils. The combined layers have, (a) a thickness of between about 10 and about 50 mils, (b) a stiffness of between about 200 and about 3500 mgs, (c) a Fraizer of between about 10 and about 400 CFM, and (d) an .alpha. of at least 15.
L'invention se rapporte à un matériau de filtration de gaz, non tissé, plissable et présentant une grande efficacité. Ce matériau comporte une couche de fibres formée par voie sèche et électriquement chargée d'une épaisseur comprise entre 2 et 35 mils environ, et une couche de fibres formée par vois humide dont l'épaisseur est comprise entre 5 et 35 mils environ. Ces deux couches combinées présentent (a) une épaisseur comprises entre 10 et 50 mils environ, (b) une raideur comprise entre 200 et 3500 mg environ, (c) un Fraizer compris entre environ 10 et 400 CFM (pied cube-minute), et (d) un .alpha. d'au moins 15.
Lydall Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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