Nonwoven web of polymer-coated nanofibers
OwnerIoannis V. Bletsosinventor
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Abstract
A nonwoven web having a top surface and a bottom surface, the web containing polymeric fibers of a first polymer coated with at least a second polymer different from said first polymer, and wherein the second polymer coating thickness is a gradient throughout the thickness of the web.
Claims28
A nonwoven web having a top surface and a bottom surface, the web containing polymeric nanofibers of a first polymer having an average fiber diameter between about 50 nm and about 800 nm and pores between said nanofibers, wherein on at least the top surface of said web said polymeric nanofibers are coated with at least a second polymer different from said first polymer, and wherein the thickness of the second polymer coating on the nanofibers of the top surface is greater than the thickness of the second polymer coating on the nanofibers of the bottom surface.
A nonwoven web having a top surface and a bottom surface, the web containing polymeric fibers of a first polymer and pores between said fibers, said fibers coated with at least a second polymer different from said first polymer, and wherein the second polymer coating thickness is a gradient throughout the thickness of the web.
Dependencies are inferred from the claim text.