Patent ID: 6495612
Filing Date: 2002-12-17
Classification: A41D,A61L,B32B,C08J

Abstract:
A shape-formed, three dimensional, moisture vapour permeable, liquid impermeable article comprising a moisture vapour permeable, liquid impermeable structure, wherein said structure is in the form of a continuous thin film, said structure comprising a thermoplastic composition, said composition comprising:a thermoplastic polymer or mixture of polymers selected from the group consisting of polyurethanes, poly-ether-amides block copolymers, polyethylene-acrylic acid copolymers, polyethylene oxide and its copolymers, poly lactide and copolymers, polyamides, polyester block copolymers, sulfonated polyesters, poly-ether-ester block copolymers, poly-ether-ester-amide block copolymers, polyacrylates, polyacrylic acids, ionomers, polyethylene-vinyl acetate with a vinyl acetate content of more than 28 weight %, polyvinyl alcohol and its copolymers, polyvinyl ethers and their copolymers, poly-2-ethyl-oxazoline, polyvinyl pyrrolidone and its copolymers, and mixtures thereof, a suitable compatible hydrophilic plasticiser or blend of hydrophilic plasticisers. said thermoplastic composition having a viscosity of from 50 poise to 4000 poise at a frequency of 1 rad/s at a temperature of 210Â° C. or less and a viscosity of less than 2000 poise at a frequency of 1000 rad/s at a temperature of 210Â° C. or less, wherein said compatible hydrophilic plasticiser are selected from the group consisting of acids, esters, amides, alcohols, polyalcohols, and mixtures thereof.