Patent ID: 8329601

Claim:
A biodegradable and renewable film comprising a thermoplastic composition, wherein the thermoplastic composition contains a starch component in an amount from about 30 wt. % to about 80 wt. %, a plant protein component in an amount from about 10 wt. % to about 40 wt. %, and a plasticizer component in an amount from about 10 wt. % to about 40 wt. %, and a biodegradable polyester selected from the group consisting of polycaprolactone, polyesteramides, modified polyethylene terephthalate, polylactic acid and copolymers and terpolymers thereof, polyglycolic acid, polyalkylene carbonates, succinate-based aliphatic polymers, aliphatic-aromatic copolyesters, and combinations thereof, further wherein the combined amount of the starch and the plant protein components in the thermoplastic composition is about 40 wt. % or greater, wherein the film exhibits a peak elongation of from about from about 50% to about 900% at a strain rate of about 127 millimeters per minute in the machine direction.