Abstract: In order to achieve further improvement in flaw resistance, the present invention includes: a metal sheet; and a color film layer positioned on the metal sheet, wherein: on a surface, of the metal sheet, on a side on which at least the color film layer is positioned, a first region and a second region that are specified by a measuring method of an arithmetic mean surface roughness Sa are present; and the color film layer has a thickness of 1 to 10 ?m, and contains particles having a particle diameter equal to or larger than the thickness.

Abstract: The object of the invention is to provide a surface-treated steel sheet having a coating having fine adhesiveness to an adhesive on the surface and having excellent corrosion resistance, and a production method thereof. Provided is a surface-treated steel sheet including: a steel sheet; a plated layer containing zinc on the steel sheet; and a coating on the plated layer, wherein the coating contains an acrylic resin, zirconium, vanadium, phosphorus and cobalt, and the acrylic resin has an area ratio of 80 to 100 area % in an area from a surface to a thickness of one-fifth of a film thickness of the coating, and an area ratio of 5 to 50 area % in an area including areas from the film thickness center of the coating to a thickness of one-tenth of the film thickness toward the surface side and toward the plated layer side.

Abstract: The object of the invention is to provide a surface-treated steel sheet having a coating having fine adhesiveness to an adhesive on the surface and having excellent corrosion resistance, and a production method thereof. Provided is a surface-treated steel sheet including: a steel sheet; a plated layer containing zinc on the steel sheet; and a coating on the plated layer, wherein the coating contains an acrylic resin, zirconium, vanadium, phosphorus and cobalt, and the acrylic resin has an area ratio of 80 to 100 area % in an area from a surface to a thickness of one-fifth of a film thickness of the coating, and an area ratio of 5 to 50 area % in an area including areas from the film thickness center of the coating to a thickness of one-tenth of the film thickness toward the surface side and toward the plated layer side.

Abstract: A chromate-free coated metal sheet according to the present invention includes: a metal sheet; and a coating film ? which contains an organic resin A as a film formation component and a flaky aluminum pigment C having a deactivation-treated surface on at least one surface of the metal sheet; wherein the thickness of the coating film ? is in a range of 1.5 to 10 ?m.

Abstract: A chromate-free coated metal sheet according to the present invention includes: a metal sheet; and a coating film ? which contains an organic resin A as a film formation component and a flaky aluminum pigment C having a deactivation-treated surface on at least one surface of the metal sheet; wherein the thickness of the coating film ? is in a range of 2 to 10 ?m.

Abstract: An easily and inexpensively producible surface-treated metal plate which uses a continuous coating facility for a surface-treated metal plate to provide at least two coating layers. A surface-treated metal plate comprised of a metal sheet on one surface or both surfaces of which two or more coating layers of different ingredients of formulation are provided, which surface-treated metal plate is characterized in that a diffusion layer is formed at an interface part between a first coating layer as a top layer and a second coating layer directly under the first coating layer, wherein the ingredients of the first coating layer and the second coating layer are mixed in the diffusion layer, and in that t/T is 0.2?t/T?0.8 where a film thickness of said diffusion layer is “t” and a total film thickness of said diffusion layer, said first coating layer, and said second coating layer is “T”.

Abstract: An easily and inexpensively producible surface-treated metal plate which uses a continuous coating facility for a surface-treated metal plate to provide at least two coating layers. A surface-treated metal plate comprised of a metal sheet on one surface or both surfaces of which two or more coating layers of different ingredients of formulation are provided, which surface-treated metal plate is characterized in that a diffusion layer is formed at an interface part between a first coating layer as a top layer and a second coating layer directly under the first coating layer, wherein the ingredients of the first coating layer and the second coating layer are mixed in the diffusion layer, and in that t/T is 0.2?t/T?0.8 where a film thickness of said diffusion layer is “t” and a total film thickness of said diffusion layer, said first coating layer, and said second coating layer is “T”.