TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The vinyl fluoride copolymer coating is crosslinked. The monomer (b) comprises fluorinated vinyl monomer containing the functional group. The monomer (a) comprises tetrafluoroethylene. The fluoropolymer coating comprises pigment. It is on both sides of the polymeric substrate film. The substrate film is polyester (preferably), polyamide, or polyimide. It can be polyethylene terephthalate or polyethylene naphthalate. The substrate film includes filler. It includes a primer layer on its surface providing the functional groups that interact with the functional groups of vinyl fluoride copolymer to promote bonding of the fluoropolymer coating to the substrate film. The substrate film is activated. The coating composition comprises crosslinking agent. Preferred Composition: The vinyl fluoride copolymer comprises 0.1-10 mol.% repeat units derived from monomer from fluorinated vinyl ethers, fluorinated alkyl (meth)acrylates, perfluoroolefins having 3-10C, perfluoro 1-8C alkyl ethylenes, and/or fluorinated dioxoles. The vinyl fluoride copolymer comprises at least 30 mol.% units derived from tetrafluoroethylene, 0.1-10 mol.% units derived from at least one monomer from highly fluorinated vinyl ethers or perfluoro 1-8C alkyl ethylenes. Preferred Property: The fluoropolymer coating has a thickness of 2.5-250 mu m. The substrate film has a thickness of 12.5-250 mu m. Preferred Process: The vinyl fluoride copolymer is crosslinked. EXAMPLE - Resin solutions were prepared by dissolving vinyl fluoride-based copolymers at 50-70 degrees C in N-methyl-2-pyrrolidone. Titanium acetylacetonate was used as crosslinking agent that was dissolved in N-methyl-2-pyrrolidone to provide 10% solution. The solution was added with titanium acetylacetonate and mixed. Tensile strengths and elongation at break measured of the vinyl fluoride copolymer films prepared from the coating composition. The results showed maximum stress of 31.856 MPa, stress at upper yield point of 20.54 MPa, elongation at break of 379.5%, elastic modulus of 645.71 MPa, and proof strength of 12.468 MPa.