TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The functional groups on the surface of the polymeric substrate film are selected from carboxylic acid, sulfonic acid, aziridine, amine, isocyanate, melamine, epoxy, hydroxy and/or anhydride.    TECHNOLOGY FOCUS - POLYMERS - Preferred Coating: The fluoropolymer coating comprises the compatible adhesive polymer (1-40 wt.% based on fluoropolymer solids content). The fluoropolymer coating further comprises pigment (1-35 wt.%). The fluoropolymer coating is on both surfaces of the substrate film. The fluoropolymer coating has a thickness of 0.1-2 mils.Preferred Components: The polymeric substrate film comprises a 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 is a functional acrylic polymer. The compatible adhesion-promoting polymer is an amine functional acrylic polymer. The fluoropolymer is selected from homopolymers and copolymers of vinyl fluoride comprising at least 60 mole% vinyl fluoride and homopolymers and copolymers of vinylidene fluoride comprising at least 60 (preferably at least 80) mole% vinylidene fluoride. The substrate film comprises polyester. The primer comprises a polymer selected from polyallylamine/melamine polymer, polyethylene imine polymer, ethylene acrylic acid copolymer, and acid modified polyolefin. The substrate film has a thickness of 0.5-10 mils. The primer layer has a thickness of 20-100 nm. The surface of the substrate film is activated. The substrate film comprises filler. EXAMPLE - Polyvinyl fluoride (PVF) (20 wt.%) and methyl methacrylate/glycidyl methacrylate 98/2 at 38% solids in 2-propanol/toluene 55/45 (4.4 wt.%) were combined and agitated for 15 minutes. The mixture was coated on Lupasol P (RTM: polyethylene terephthalate film having thickness of 100 microns) to produce approximately 1.2 mil dry fluoropolymer coating. A similar procedure was applied to prepare comparative coating but without the adhesive polymer. A heavy bead of pure PVF dispersion (42% in propylene carbonate) was applied along one edge of the wet draw down to help facilitate peel testing. The coated webs were clamped into metal frames and placed into preheated ovens at either 200degreesC or 220degreesC for 3 minutes. The coalesced and dried films were removed from the ovens and allowed to cool. One inch strips were cut perpendicular to the heavy PVF bead. A scalpel was used to initiate peeling at the PVF bead. Peel strengths were measured using ASTM D1876-01 T-Peel Test. If samples easily peeled by hand during the peel initiation step a value of 0 was recorded. The test/comparative samples showed peel strength at 200degreesC and 220degreesC of 1.18/0 and 1.14/0 respectively.