Fibrous nonwoven web
AssigneePall Corporation
InventorJoseph G. Adiletta
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Abstract
The present invention provides a polymeric nonwoven web having a relatively small pore size, and made from mixtures of aramid and other non-aramid fibers. The fibrous nonwoven web has a high titer reduction with respect to coliphage PR772. The present invention provides the filter element incorporating the present inventive fibrous nonwoven web. The nonwoven web is also adapted to be use as human apparel and fashioned into garments.
Claims32
A fibrous nonwoven web characterized by having a titer reduction of at least about 10.sup.1 with respect to PR772 coliphage and an air flow resistance of about 30 psi or less at a thickness of about 0.01 inch or less, wherein said web comprises cellulose fibers.
A fibrous nonwoven web characterized by having a titer reduction of at least about 10.sup.1 with respect to PR772 coliphage and an air flow resistance of about 30 psi or less at a thickness of about 0.01 inch or less, wherein said web comprises aramid fibers and non-aramid fibers.
A fibrous nonwoven web characterized by having a titer reduction of at least about 10.sup.5 with respect to PR772 coliphage and an air flow resistance of about 30 psi or less at a thickness of about 0.02 inch or less, wherein said web comprises cellulose fibers.
A fibrous nonwoven web characterized by having a titer reduction of at least about 10.sup.5 with respect to PR772 coliphage and an air flow resistance of about 30 psi or less at a thickness of about 0.02 inch or less, wherein said web comprises aramid fibers and non-aramid fibers.
Dependencies are inferred from the claim text.