TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The surface of the substrate film is activated. The substrate film comprises filler.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The polymeric substrate film comprises primer layer on its surface providing the functional groups that interact with the adhesive to promote bonding of the fluoropolymer coating to the substrate film. The compatible adhesive polymer (preferably compatible adhesion-promoting polymer) is functional acrylic polymer (preferably amine functional acrylic polymer). The fluoropolymer is selected from homopolymers and copolymers of vinyl fluoride comprising vinyl fluoride (at least 60, preferably 80 mol.%) and homopolymers and copolymers of vinylidene fluoride comprising vinylidene fluoride (at least 60, preferably at least 80) mol.%. The fluoropolymer coating comprises compatible adhesive polymer (1-40 wt.%). The fluoropolymer coating further comprises pigment (1-35 wt.%). The fluoropolymer coating is on both surfaces of the substrate film. The primer comprises polymer selected from polyallylamine/melamine polymer, polyethylene imine polymer, ethylene acrylic acid copolymer, and acid modified polyolefin. The fluoropolymer coating has a thickness of 0.1-2 mils. The substrate film has a thickness of 0.5-10 mils. The primer layer has a thickness of 20-100 nm. The thermoplastic polyester of the substrate film is selected from polyethylene terephthalate, polyethylene naphthalate, and coextrudate of polyethylene terephthalate/polyethylene naphthalate. The functional groups on the surface of the polymeric substrate film are selected from carboxylic acid and/or hydroxy. EXAMPLE - Thermal stabilizer solution (S1) comprising (wt.%): Irganox (RTM: sulfur containing primary (phenolic) antioxidant) (4), Weston (RTM: heat stabilizer) (1), and propylene carbonate (95) was prepared. Amine function acrylic polymer solution (S2) was prepared by post reacting methyl methacrylate/glycidyl methacrylate (98/2) with ammonia to convert the glycidyl groups into 2-hydroxy-3-aminopropyl groups to produce a primary amine functional acrylic polymer in a solvent of toluene and isopropanol. A white polyvinyl fluoride (PVF) coating formulation comprising (wt.%): PVF dispersion, white pigment dispersion (45.5), thermal stabilizer solution (S1) (0.66), and solution (S2) (18.4) was prepared and coated on both sides of unpigmented and pigmented polyethylene terphthalate (PET) film primed with a polyallylamine primer.