Patent ID: 8889945

Claim:
An elastic film comprising a thermoplastic composition, wherein the thermoplastic composition comprises at least one starch polymer constituting from about 1 wt. % to about 30 wt. % of the polymer content of the film, at least one elastomeric polymer constituting from about 30 wt. % to about 95 wt. % of the polymer content of the film, wherein the elastomeric polymer includes a metallocene-catalyzed ethylene/α-olefin copolymer, a metallocene-catalyzed propylene/α-olefin copolymer, or a combination thereof having a density of from about 0.85 g/cm 3 to about 0.89 g/cm 3 , a thermoplastic polyurethane synthesized from a polyol and an organic diisocyanate and having a melting point of from about 75° C. to about 250° C., or a combination thereof; and at least one plasticizer constituting from about 0.1 wt. % to about 30 wt. % of the film, wherein the weight ratio of elastomeric polymers to starch polymers in the film is from about 1 to about 10, the elastic film exhibiting an elongation in the machine direction and cross-machine direction of about 250% or more.