Nonwoven composite structure with excellent water vapour permeability
AssigneeBorealis AG
InventorsWillem De Wever, Henk Van Paridon, Gustaf Tobieson, Auli Nummila-Pakarinen, Jingbo Wang
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AssigneeBorealis AG
InventorsWillem De Wever, Henk Van Paridon, Gustaf Tobieson, Auli Nummila-Pakarinen, Jingbo Wang
Estimating the term…
The present invention relates to a composite comprising a nonwoven fabric being the substrate of the composite, wherein the nonwoven fabric comprises a polymer (A) selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate and polyamide; and a coating layer, wherein the coating layer comprises a polymer (B), wherein said polymer is an ethylene copolymer, preferably a polar ethylene copolymer; whereby the coating layer overlays at least one surface of the nonwoven fabric; and whereby the composite has a water vapor transmission rate (WTVR) according to ASTM E-96 ((water cup method) at 38° C. at 50% RH at the outside of the sample and 100% RH at the inside of the samples) of more than 50 g/[m2/24 h], preferably of more than 100 g/[m2/24 h].
Composite comprising
A method for using a polymer (B), comprising:
Dependencies are inferred from the claim text.