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

摘要

The present invention relates to a thermoformable multilayer film comprising in succession: an optional protective layer (A); a layer (B) comprising (the total being 100% by weight) 0 to 30% of a fluoropolymer (B1) and 100 to 70% of a functionalized polymer (B2) essentially consisting of alkyl (meth)acrylate units; a layer (C) based on an ethylene/alkyl (meth)acrylate/unsaturated epoxide copolymer; a polyolefin tie layer (D); the layers adhering to one another in their respective contact regions. This film is obtained by coextrusion or coating of the various layers, the layer (A) possibly being laminated using the standard technique for thermoplastics. This film is then used to cover various substrates, for example by injecting the substrate in the melt onto the multilayer film deposited in the bottom of an injection mould, the layer (B) or the optional layer (A) of the film being placed against the wall of the mould. The present invention also relates to the substrates coated with these films.