THERMOFORMABLE MULTILAYER FILM BASED ON ACRYLIC POLYMER FOR PROTECTING SUBSTRATES AND RESULTING OBJECTS

摘要

The invention concerns a thermoformable multilayer film comprising successively: an optional protective layer (A); a layer (B) comprising (the total weight being 100%) 0 to 30 % of a fluorinated polymer (B1) and 100 to 70 % of a functionalized polymer (B2) consisting essentially of alkyl (meth)acrylate units; a layer (C) based on an ethylene copolymer, an alkyl (meth)acrylate and an unsaturated epoxy; a polyolefin binding layer (D); the layers mutually adhering in their respective contact zones. Said film is obtained by coextrusion or acrylic resin coating of the different layers, the layer (A) capable of being laminated in accordance with the standard thermoplastic technique. Said film is used for covering different substrates for example by injecting the substrate in molten state on the multilayer film at the base of an injection mould, the layer (B) or the optional layer (A) of the film being arranged against the mould wall. The invention also concerns substrates coated with said films.