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Abstract

A powder coating material composition including a tetrafluoroethylene-based copolymer, wherein the tetrafluoroethylene-based copolymer is a copolymer of 9.0 to 13.0 mass % of hexafluoropropylene, 0.8 to 3.0 mass % of a perfluoroalkyl vinyl ether, and tetrafluoroethylene, having a melt flow rate of 13 to 26 g/10-min, a melting point of 240 to 270° C., an average particle size of 5 to 500 μm and an apparent density of 0.5 to 1.1 g/ml. Also disclosed is a film that is formed from the powder coating material composition, a laminate including the film, a coated article wherein the film of the powder coating material composition is provided on a metal substrate, and a film-forming method which includes forming a primer film on an object to be coated, and forming a film on a surface of the primer film using the powder coating material composition.

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First Claim