| 摘要 |
PROBLEM TO BE SOLVED: To positively change capacitance of a capacitor against a frequency, by setting content of powder constituting coating, and showing a specified powder frequency characteristic index to be specified weight % against resin. SOLUTION: Porous silica, barium titanate, titanium oxide, barium stannate, calcium carbonate in a range where powder frequency characteristic index is not less than 15% are used as powder contained in the coating layer of a plastic film. When powder is distributed in a resin layer and it is applied on the plastic film, the content of powder is set to be 20-80 weight % against whole application quantity. The surface ratio resistance of the coating layer is set to be not more than 10<12>Ω/(square). The content of organic solvent is to be to 0.1-3.0 ppm and ethyl acetate, methyl ethylketone, methyl isobutyl ketone, toluene, xylene and cyclohexanone exist for organic solvent.
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