Toyo Kohan Co., Ltd.

Toyo Seikan Group Holdings, Ltd.

Naomi Taguchi

Kunihiro Yoshimura

Satoko Fukutomi

Satoshi Mikami

Wataru Kurokawa

Mitsuhide Aihara

Munemitsu Hirotsu

Kenji Yanada

Akihiro Yoshida

A surface-treated steel sheet including a tin-plated steel sheet having a tin plating on a steel sheet; a tin oxide layer formed on the tin-plated steel sheet and containing tin oxide as a main component; a composite oxide layer formed on the tin oxide layer and containing phosphoric acid and aluminum as main components; and an aluminum-oxygen compound layer formed on the composite oxide layer and containing an aluminum-oxygen compound as a main component, wherein the tin oxide layer has a thickness of 8 to 20 nm.

Surface-treated steel sheet, metal container, and method for manufacturing surface-treated steel sheet

Provided is a surface-treated steel sheet with a compound layer containing F and composed essentially or Zr at least on one surface thereof, wherein the Zr amount is 80 to 350 mg/mand the F amount is 0.5 to 10 mg/mwithin the layer, and an organic resin coated metal container manufactured using the surface-treated steel sheet. The surface-treated steel sheet of the present invention is manufactured through forming a layer having the Zr amount of 80 to 350 mg/mat least on one surface of a steel sheet by cathode electrolytic treatment in an aqueous solution containing a Zr ion and F ion, and subsequently adjusting the surface to control the F amount to 0.5 to 10 mg/mby one or more treatments selected from immersion and spraying with an ion-containing aqueous solution and cathode electrolytic treatment in the ion-containing aqueous solution.

Surface-treated steel sheet, organic resin coated metal container, and method for producing surface-treated steel sheet

A method of producing a surface-treated steel sheet is provided. The surface-treated steel sheet includes a layer that contains a metal oxide. The method is characterized by including: dipping a steel sheet for 0.1 to 10 seconds in a treatment liquid that contains at least fluoride ions and has a pH of 2 to 5; and electrically treating by flowing a direct current between the steel sheet and an electrode in a treatment liquid to form a layer that contains a metal oxide on a surface of the steel sheet. According to the present invention, there can be provided a method of producing a surface-treated steel sheet which can enhance the interfacial adhesion with an organic resin layer when the organic resin layer is formed on the metal oxide layer.

Method of producing surface-treated steel sheet

Growing community of inventors

Yamaguchi, Japan

Naomi Taguchi