Patent ID: 7655291

Claim:
A co-extruded multi-layer translucent polyester film having a matte side and an opposed relatively smooth side, wherein the polyester film consists essentially of a co-extruded AB or ABA structure, wherein at least one A layer of the film comprises a mixture of a polyester resin and talc, at least one B layer comprises a polyester resin and optionally comprises talc, and the at least one A layer contains a higher percentage content of talc by weight than the at least one B layer, wherein the total concentration of talc in the at least one A layer is from about 0.5% to about 15% based upon total weight of the layer, and wherein the gloss level measured at 60 degree angle from an A layer side is about 39 or greater, and wherein the surface roughness (SRa) of the at least one A layer is between or equal to 76.6 nm and 147 nm.