Patent ID: 8513144

Claim:
A multilayer article comprising, in order: a) a biodegradable polymer layer consisting of a polylactic acid polymer having a base weight of from about 15.0 grams/m 2 to 60 g/m 2 and a thickness of from about 10 μm to about 50 μm; b) an optional intermediate adhesive primer layer; c) a thermoplastic moisture barrier layer having a coating weight of from about 0.05 lb/ream to about 2.5 lb/ream, a thickness of from about 0.03 μm to about 6 μm, and a moisture vapor permeability rate of about 1 perm or less at 25% relative humidity and 21° C. as determined by 50% dry-cup method of ASTM E96, Procedure A, and wherein said thermoplastic moisture barrier layer comprises polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetate, a polyamide, extrudable grade ethylene vinyl acetate, extrudable grade ethylene acrylic acid, an ethylene vinyl alcohol copolymer or a combination thereof; d) a first adhesive tie layer; and e) a fibrous substrate on the first adhesive tie layer.