Patent ID: 6838403

Claim:
A breathable, biodegradable/compostable laminate material comprising: a. a biodegradable nonwoven material selected from the group comprising aliphatic polyesters; polylactides; polyhydroxybutyrate-co-valerates; sulfonated polyethylene terephthalates; blends or mixtures thereof; and b. a filled, biodegradable film stretched from about 100 to about 500 percent of its original length and selected from the group consisting of aliphatic polyesters; polylactides; polyhydroxybutyrate-co-valerates; sulfonated polyethylene terephthalates; and blends or mixtures thereof; wherein the breathable, biodegradable/compostable laminate material has a water vapor transmission rate that is greater than about 3000 g/m 2 /24 hr.