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PVA is a water/alcohol-based polyvinyl alcohol (PVA) mold release agent that forms a barrier between parts and mold surfaces that are still curing (green or recently reconditioned molds can be reactive). PVA, the original green parting film, is resistant to solvents and styrene yet is water soluble. Protects against mold hang-ups with polyester and vinyl ester resins; also used with epoxy and urethane resins. PVA is most commonly applied over mold release wax although some users find success by adding wax over the PVA film (giving a second part cycle before replacing PVA.) Partall® Film #10 can also be used as a surface cure agent during gel coat repairs (locks out moisture in the air that inhibits resin cure). Now improved for easier lay out, PVA allows application by brush, roller, sponge or cloth as well as excellent spray characteristics.
