Patent ID: 8574694
Filing Date: 2013-11-05
Classification: B32B,Y10T

Abstract:
1. A multilayer non-oriented thermoformable packaging sheet comprising a first rigid component layer comprising a blend of an amorphous polyethylene terephthalate or glycol-modified polyethylene terephthalate and a general purpose polystyrene; a second rigid component layer comprising a blend of an amorphous polyethylene terephthalate or glycol-modified polyethylene terephthalate and a general purpose polystyrene; a coextruded film positioned between and affixed to both the first and second rigid component layers; wherein the total combined amount of general purpose polystyrene present in the sheet relative to the total weight of the sheet is at least 3% by weight; and wherein the sheet has a thickness of at least 5 mil and a normalized impact strength of 0.16 ft*lbf/mil or less total energy as measured in accordance with ASTM D3763-08 test method.