Patent ID: 7285324
Filing Date: 2007-10-23
Classification: B32B,Y10T

Abstract:
1. A laminate structure comprising: (i) a substrate layer comprising a woven or non-woven material, (ii) a moisture vapor control layer comprised of a polymer film attached to said substrate and adjacent to said substrate, (iii) a tie layer comprising one or more copolymers comprising from about 30 to about 90 weight percent ethylene co-monomer units and from about 10 to about 70 weight percent vinyl acetate co-monomer units, said tie layer being adjacent to said moisture vapor control layer such that said moisture vapor control layer is positioned between said substrate layer and said tie layer, and (iv) a copolyetherester layer comprising one or more copolyetheresters in an amount of at least 50 weight percent based on the total amount of polymer in the layer, said copolyetherester containing layer being adjacent to said tie layer and on a surface of the tie layer remote from the substrate layer, (v) an adhesive or primer adjacent the copolyetherester-containing layer on the a surface of the copolyetherester-containing layer remote from the tie layer, and (vi) a second substrate layer comprising at least 50 weight percent of a polyolefin, said second substrate layer being adjacent to the adhesive or primer on a surface of the adhesive or primer remote from the copolyesterester-containing layer, wherein said laminate structure has an MVTR CAS >MVTR SAC , wherein the MVTR CAS is the MVTR in the direction away from the copoloyetherester-containing layer and tie layer and towards the substrate layer, and the MVTR SAC is the MVTR in the direction away from the substrate layer and towards the tie layer and copoloyetherester-containing layer.