Patent ID: 7135234

Claim:
A co-extruded multilayer film or sheet structure comprising at least three layers: A) a first layer comprising at least one thermoplastic polyolefin; B) a second layer comprising an impact modified styrene/methylmethacrylate copolymer; and C) a tie layer located between said first layer and said second layer wherein said tie layer comprises a blend of: C1) a thermoplastic polyolefin; C2) a thermoplastic vinyl aromatic polymer; and C3) a styrenic block copolymer, wherein said block copolymer C3 is selected from the group consisting of styrene-butadiene block polymers; styrene-isoprene diblock polymers; styrene-butadiene-styrene block polymers; styrene-isoprene-styrene block polymers; and hydrogenated resins of any of said block polymers.