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AssigneeE. I. Du Pont de Nemours and Company
InventorsJill A. Conley, Joseph Robert Guckert, Robert Anthony Marin, George Bruce Palmer
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A composite wind barrier fabric having the ability to maintain a high MVTR while controlling air permeability. The fabric has a nanofiber layer optionally welded to, and in a face-to-face relationship with, a fabric layer. Optionally a second fabric layer is welded adjacent to and in a face-to-face relationship with the nanofiber layer and on the opposite side of the nanofiber layer to the first fabric layer. The fabric has a Frazier air permeability of between about 1.2 m3/m2/min and about 7.6 m3/m2/min, and an MVTR per ASTM E-96B method of greater than about 500 g/m2/day. The nanofiber layer is dyed over at least a portion or all of its surface or both.
A garment having the ability to pass moisture vapor while protecting the wearer from wind and/or water comprising a composite fabric of at least one fabric layer adjacent to and in a face-to-face relationship with a nanofiber layer, wherein the nanofiber layer comprises at least one porous layer of polymeric nanofibers having a number average diameter between about 50 nm to about 1000 nm, a basis weight of between about 1 g/m2 and about 100 g/m2, and wherein the composite fabric has a Frazier air permeability of between about 1.2 m3/m2/min and about 7.6 m3/m2/min, and an MVTR per ASTM E-96B of greater than about 500 g/m2/day said nanofiber layer being dyed, over all or a portion of its surface.
Dependencies are inferred from the claim text.