NOVELTY - Manufacturing a back sheet material for a solar module comprises: (a) providing a fluoropolymer film; (b) providing a stretched polyester film; (c) providing a copolymer of ethylene and one or more monomers; and (d) extruding an adhesive layer comprised of at least 70% by weight of the ethylene copolymer of step (c), based on the weight of the adhesive layer.    USE - The method is useful for manufacturing back sheet material for solar module. The multilayer laminated film is useful as solar panel back sheet (all claimed).    ADVANTAGE - The method does not require the use of organic solvent or organic catalyst.    DETAILED DESCRIPTION - Manufacturing a back sheet material for a solar module comprises: (a) providing a fluoropolymer film; (b) providing a stretched polyester film; (c) providing a copolymer of ethylene and one or more monomers selected from 1-4C alkyl acrylates, 1-4C alkyl methacrylates, methacrylic acid, acrylic acid, glycidyl methacrylate, maleic anhydride and copolymerized units of ethylene and a comonomer selected from 4-8C unsaturated anhydrides, monoesters of 4-8C unsaturated acids having at least two carboxylic acid groups, diesters of 4-8C unsaturated acids having at least two carboxylic acid groups and mixtures of such copolymers, where the ethylene content in the ethylene copolymer accounts for 60-90% by weight, preferably accounting for 65-85% by weight, and ideally accounting for 70-80% by weight; and (d) extruding an adhesive layer comprised of at least 70% by weight of the ethylene copolymer of step (c), based on the weight of the adhesive layer, at a temperature of 270 degrees C or higher between the fluoropolymer film and the stretched polyester film, and pressing the ethylene copolymer between the fluoropolymer film and the stretched polyester film to form a fluoropolymer/ethylene copolymer/stretched polyester multilayer laminated film for a solar module back sheet. INDEPENDENT CLAIMS are:    (1) a multilayer laminated film comprising a fluoropolymer layer/ethylene copolymer layer/stretched polyester layer, where the laminated film is made according to the method above;    (2) a solar panel comprising a front sheet, an electronic circuit and a back sheet, where the back sheet comprises the multilayer laminated film; and    (3) a back sheet for solar panel comprising: (a) fluoropolymer film; (b) a stretched polyester film; (c) an extruded adhesive layer between the fluoropolymer film and the stretched polyester film, the extruded adhesive layer comprised of at least 70% by weight of copolymer of ethylene and one or more monomers selected from 1-4C alkyl acrylates, 1-4C alkyl methacrylates, methacrylic acid, acrylic acid, glycidyl methacrylate, maleic anhydride and copolymerized units of ethylene and a comonomer selected from 4-8C unsaturated anhydrides, monoesters of 4-8C unsaturated acids having at least two carboxylic acid groups, diesters of 4-8C unsaturated acids having at least two carboxylic acid groups and mixtures of such copolymers, where the ethylene content in the ethylene copolymer accounts for 60-90% by weight, preferably accounting for 65-85% by weight, and ideally accounting for 70-80% by weight.