15-07-2021 дата публикации
Номер: US20210213702A1
Принадлежит:
A nonwoven article includes a nonwoven substrate having from a lofty, open web of fibers formed through a needling process. The nonwoven substrate is coated with at least one coating to provide improved performance characteristics including loft, elongation, tensile strength, stiffness, pore size, permeability, fiber orientation index, and combinations thereof. 1. A nonwoven article , comprising:a nonwoven substrate comprising a lofty, open web of fibers; anda coating overlying the nonwoven substrate, the coating having a greater thickness at an exterior surface of the nonwoven substrate as compared to a central region of the nonwoven substrate spaced apart from the exterior surface.2. The nonwoven article of claim 1 , wherein the thickness of the coating at the exterior surface of the nonwoven substrate is greater than the thickness of the coating at the central portion of the nonwoven substrate by at least about 1% claim 1 , as at least 2% claim 1 , at least 3% claim 1 , at least 4% claim 1 , at least 5% claim 1 , at least 7.5% claim 1 , at least 10% claim 1 , at least 12.5% claim 1 , at least 15% claim 1 , at least 17.5% claim 1 , at least 20% claim 1 , at least 22.5% claim 1 , at least 25% claim 1 , at least 30% claim 1 , or at least about 35%.3. The nonwoven article of claim 2 , wherein the thickness of the coating at the exterior surface of the nonwoven substrate is greater than the thickness of the coating at the central portion of the nonwoven substrate by not greater than about 50% claim 2 , not greater than 40% claim 2 , not greater than 35% claim 2 , not greater than 30% claim 2 , not greater than 25% claim 2 , not greater than 22.5% claim 2 , not greater than 20% claim 2 , not greater than 17.5% claim 2 , not greater than 15% claim 2 , not greater than 12.5% claim 2 , not greater than 10% claim 2 , not greater than 7.5% claim 2 , or not greater than about 5%.4. The nonwoven article of claim 1 , wherein the nonwoven article comprises a loft of at least 12 ...
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