Patent ID: 8945708
Filing Date: 2015-02-03
Classification: B29C,B32B,B44C,Y10T

Abstract:
1. A multilayer sheet comprising a first layer, a second layer, a third layer; and optionally a tie layer, a recycled polymer layer, or both wherein the sheet is a thermoformable sheet; the combined first layer and the second layer have a thickness of 8 to 60 mils; the first layer is a surface layer in contact with the second layer and consists essentially of ionomer and a first additive; the second layer comprises an ionomer-polyamide blend and a second additive and is in contact with the first layer; the ionomer-polyamide blend consists essentially of at least one polyamide forming a continuous phase or co-continuous phase with at least one ionomer dispersed therein; the third layer is in contact with the second layer, directly or through the tie layer, and comprises a very low density polyethylene and a third additive; the first additive, the second additive, and the third additive are individually selected from the group consisting of one or more UV stabilizer, UV absorber, antioxidant, thermal stabilizer, anti-stat additive, processing aid, fiber glass, mineral filler, anti-slip agent, plasticizer, nucleating agent, pigment, dye, flake, and mixtures of two or more thereof; and the tie layer comprises a blend of polyethylene, ethylene/α-olefin copolymer, and ethylene elastomer; ethylene vinyl acetate; ethylene (meth)acrylate copolymer; ethylene butyl acrylate copolymer; polyethylene terephthalate and polyethylene terephthalate glycol copolymer resins; maleic anhydride modified polypropylene; copolymers containing anhydride grafts; or a mixture of two or more thereof.