Patent ID: 7851036
Filing Date: 2010-12-14
Classification: B29C,B29L,B32B,Y10T

Abstract:
1. A gas-filled cushioning device, comprising: a multi-layer film formed into a gas-filled membrane having an interior compartment containing at least one capture gas constituent, said multi-layer film including a first layer comprising a blend of at least one aliphatic thermoplastic polyurethane, at least one aromatic thermoplastic polyurethane, and at least one copolymer of ethylene and vinyl alcohol, wherein the first layer includes up to about 50 wt. % of the at least one aliphatic thermoplastic polyurethane and wherein the at least one aliphatic thermoplastic polyurethane is formed as the reaction product of (a) at least one member selected from the group consisting of polyester and polyether diols, (b) at least one difunctional extender, and (c) at least one aliphatic diisocyanate; and a second, outer layer comprising a flexible resilient elastomeric thermoplastic material, said multi-layer film being capable of selectively resisting an outward diffusion of said capture gas constituent and permitting an inward diffusion pumping of at least one mobile gas constituent, wherein hydrogen bonding occurs along a segment of the film between the first layer and the second layer.