Patent ID: 7431816

Claim:
A method for manufacturing a heat resistant resin film, comprised of a heat resistant resin, with a metal thin film, comprising the steps of: mixing the heat resistant resin and a plurality of materials having a difference in specific gravities from each other, wherein at least two of the plurality of materials are conductive materials in the form of solid particles, the particle size of the first of the at least two conductive materials being different from the particle size of the second of the at least two conductive materials, and one of the two conductive materials has the largest specific gravity among the plurality of materials; biasing at least one of the conductive materials to one surface of the heat resistant resin film; and applying electrolytic plating to the heat resistant resin film by using the conductive material biased to the one surface of the heat resistant resin film as an electrode to form a metal thin film on the heat resistant resin film.