To enhance the productivity of a film for capacitor and to raise the capacitor characteristics of the film by a method wherein the polymerization degree of a dielectric material formed by coating a dielectric paint containing an ultraviolet cured rasin, which is constituted of a dimethyloltricyclodecanediacrylate and a 2- ethylhexylacrylate, as its main component on the surface of at least one side of the surfaces of a metallized film is specified.
A metallized film is formed by forming a metal thin film layer containing aluminium as its main component on the surface on at least one side of the surfaces of a high-molecular film by a vacuum evaporation method, an ion plating method or the like and the reduction rate of the C=C double bond of a dielectric material formed by coating a dielectric paint containing an ultraviolet cured resin constituted of dimethyloltricyclodecanediacrylate, which is shown by the formula 1, and a 2-ethylhexylacrylate, which is shown by the formula 2, as its main component on the surface on at least one side of the surfaces of the metallized film is reduced higher than 70%. Moreover, as the dielectric paint, a dielectric paint being included in the range of the weight ratio of a dielectric paint to a photopolymerization starting agent, which is shown by the formula 3, =100 to 1 to 100 to 5 is formed by coating.
AOTO MINEYASU
INAGAKI TOSHIYUKI
KIKUCHI MINORU
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