Patent ID: 8188185
Filing Date: 2012-05-29
Classification: B32B,C08J,C08K,C08L

Abstract:
1. A biodegradable packaging film, wherein the film includes a blend that comprises at least one thermoplastic starch in an amount of from about 10 wt. % to about 60 wt. % of the blend, at least one polylactic acid in an amount of from about 1 wt. % to about 30 wt. % of the blend, at least one aliphatic-aromatic copolyester in an amount of from about 20 wt. % to about 70 wt. % of the blend, and at least one filler in an amount of from about 1 wt. % to about 25 wt. % of the blend, wherein the ratio of the total weight percentage of the aliphatic-aromatic copolyester and thermoplastic starch to the total weight percentage of the polylactic acid and filler is from 4 to about 10; wherein the film exhibits a peak elongation of from about 50% to about 600% at a strain rate of about 127 millimeters per minute in the machine direction.