Peelable vacuum skin packages

摘要

The present invention describes vacuum skin packages comprising a thermoplastic film and a polyester substrate wherein the thermoplastic film includes at least a first polymer layer having a first surface and an opposing second surface and comprises an ethylene/unsaturated ester copolymer, wherein the first surface has been surface treated in a manner to exhibit a surface tension of between 36-60 dynes/cm. The thermoplastic film is adapted to form a peelable seal between the first surface of the first polymer layer of the thermoplastic film and the polyester substrate by a pressure of less than 1�105 Pa applied therebetween, wherein the peelable seal has a seal strength of between 0.5-6 lb./in. (0.09-1.08 kg/cm).