TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The base is made of metallic film or polymer film. Coupling agent treatment and thermal process are performed in one or both sides of the base, before formation of the resin layer. An inorganic oxide vapor deposition layer is formed on a surface of the substrate. A thickness of the base is 50-500 mu m. The polymer film comprises acrylic film, polyolefin film, polyamide film, polyurethane film, polyethylene terephthalate film, polyethylene naphthalate film and polybutylene terephthalate film. The oxazoline group-containing polymer is oxazoline group-containing monomer or comonomer. The oxazoline group-containing monomer is a compound of formula (I). The oxazoline group-containing monomer comprises 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-isopropenyl-2-oxazoline, 2-isopropenyl-4-methyl-2-oxazoline, and 2-isopropenyl-5-ethyl-2-oxazoline. The oxazoline group-containing monomer is present in an amount of 1 wt.%. The comonomer comprises alkyl(meth)acrylate, monomer containing amide group, unsaturated nitrile-based monomer, vinyl ester-based monomer, vinyl ether-based monomer, alpha , beta -unsaturated monomers, and halogen-containing unsaturated aromatic monomer. The alkyl(meth)acrylate comprises methyl(meth)acrylate, ethyl(meth)acrylate, propyl(meth)acrylate, n-butyl(meth)acrylate, s-butyl(meth)acrylate, tert-butyl(meth)acrylate, isobutyl(meth)acrylate, hexyl(meth)acrylate, 2-ethylhexyl(meth)acrylate, N-octyl(meth)acrylate, isooctyl(meth)acrylate, n-nonyl(meth)acrylate, isononyl(meth)acrylate, n- decyl(meth)acrylate, isodecyl(meth)acrylate, n-dodecyl(meth)acrylate, n-tridecyl(meth)acrylate and n-tetradecyl (meth)acrylate. The carboxyl group-containing fluorinated polymer is polymerized to form a fluorine containing monomer. The fluorine containing monomer comprises vinylidene fluoride, vinyl fluoride, tetrafluoroethylene, hexafluoropropylene, chlorotrifluoroethylene, the trifluoroethylene, hexafluoroisobutylene, perfluorobutylethyene, perfluoromethylvinylether, perfluoroethyl vinylether, perfluoropropylvinylether, perfluorohexyl vinylether, perfluoro-2 2-dimethyl-1 3-dioxole and perfluoro-2-methylene-4-methyl-1,3-dioxolan. The carboxyl group-containing monomer comprises acrylic acid, methacrylic acid, carboxylpentyl (meth)acrylate, carboxylethyl (meth)acrylate, undecenoic acid, cinnamic acid, 4-fluoro cinnamic acid, 4-chloro cinnamic acid, 4-methyl cinnamic acid, hydro cinnamic acid, fumaric acid, maleic acid, 2-tridecenoic acid, and crotonic acid. An equivalent of reactive functional group of carboxyl group-containing fluoropolymer is less than 30000. The carboxyl group-containing fluoropolymer is present in an amount of 0.5-50 wt.%. A thickness of the primer layer is 10-10000 nm. A thickness of the resin layer is 3-50 mu m. The resin layer further comprises pigment, filler, UV stabilizer, thermal stabilizer and additive. Preferred Method: The primer layer is formed by coating a resin composition comprising oxazoline group-containing polymer and solvent, on the substrate, and then drying the composition at less than 200 degrees C for 10 seconds to 30 minutes. The solvent comprises acetone, methyl ethyl ketone, dimethylformamide, and dimethylacetamide. The solvent has boiling point of less than 200 degrees C.R1, R2, R3, R4 = H, alkyl, halo, or optionally substituted phenyl; andR5 = acyclic hydrocarbon group having an unsaturated bond.