Patent ID: 7923100
Filing Date: 2011-04-12
Classification: B32B,C08L,Y10T

Abstract:
1. A sheet, comprising: a cap layer comprising an acrylic polymer, wherein the cap layer is 10% to 30% of an overall thickness and the overall thickness is 5 mil to 500 mil; and a base layer comprising a cycloaliphatic polyester copolymer and an aromatic polycarbonate, wherein the cycloaliphatic polyester copolymer is poly(1,4-cyclohexylene dimethylene co-ethylene terephthalate); wherein the cap layer and base layer were coextruded to form the sheet which is thermoformable; wherein the sheet has a pencil hardness greater than or equal to 2H; and wherein the sheet has a tear propagation strength above 5 N/mm.