Nanofiber filter media for high performance applications
AssigneeCummins Filtration IP, Inc.
InventorsEric A. Janikowski, Mark P. Adams, Huanling Liu, Himani Deshpande, Scott W. Schwartz, Barry Mark Verdegan, Aiden Kim, Anna Balazy, Nathan Shafer
Life of this patent
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Abstract
Disclosed here is a composite filter media having at least one nanofiber layer bonded to a substrate layer, the at least one nanofiber layer optionally having a plurality of nanofibers having a geometric mean diameter of less than or equal to 0.5 μm, the at least one nanofiber layer having a thickness of about 1-100 μm.
Claims43
A composite filter media, comprising at least one nanofiber layer bonded to a substrate layer, the at least one nanofiber layer comprising a plurality of nanofibers having a geometric mean diameter of less than or equal to 0.5 μm, the at least one nanofiber layer having a thickness of about 1-100 μm, wherein the at least one nanofiber layer further comprises polymeric masses incorporated within the nanofiber layer.
(canceled)
A composite filter media, comprising at least one nanofiber layer bonded to a substrate layer, the at least one nanofiber layer comprising a plurality of nanofibers having a geometric mean diameter of less than or equal to 0.5 μm and a plurality of polymeric masses having area equivalent diameter in the range of between 5 to 130 μm, wherein the plurality of polymeric masses covers 1-25% of media surface area.
(canceled)
A composite filter media, comprising at least one nanofiber layer bonded to a substrate layer, the at least one nanofiber layer comprising a plurality of nanofibers having a nanofiber basis weight in the range of 0.7 g/m2 to 20 g/m2, wherein the thickness of the at least one nanofiber layer is in the range of 1-100 μm, and wherein a linear relationship exists between the thickness of the at least one nanofiber layer as a function of the nanofiber basis weight.
Dependencies are inferred from the claim text.