| abstract |
An object of the present invention is to provide a surface-treated metal plate further improved in corrosion resistance, alkali degreasing resistance, conductivity, paintability, abrasion resistance, and tape peel resistance. A surface-treated metal plate of the present invention comprises a metal plate and a resin film obtained from an aqueous resin solution formed on at least one surface of the metal plate, wherein the aqueous resin solution comprises a nonvolatile resin component, and In addition, the non-volatile resin component containing the silica particles and the non-volatile resin component (PU) of the ethylene-unsaturated carboxylic acid copolymer aqueous dispersion and the carboxyl group-containing polyurethane resin aqueous solution as the non-volatile resin component In a mass ratio of EC: PU = 90: 10 to 40:60, and further 5 to 20 mass of the silane coupling agent with respect to a total of 100 mass parts of the nonvolatile resin component and the silica particles. And 1 to 14 parts by mass of alkoxysilane. [Selection figure] None |