| abstract |
[Problem] To provide a copper electroconductive film formed on a paper substrate, wherein weather resistance and electrical conductivity are significantly improved. [Solution] The problem is solved by an electroconductive film formed by pressing, together with a paper substrate, a sintered electroconductive film in which copper particles in a copper-powder-containing coating are sintered on the substrate, wherein the area ratio of copper in an electroconductive film cross-section parallel to the thickness direction is 82.0% or higher. The electroconductive film can be manufactured by performing pressing, using, e.g., a roll press, at 90-190°C after optical firing. |