Toyo Kohan Co., Ltd.

Toyo Seikan Co., Ltd.

Toyo Seikan Kaisha, Ltd.

Toyo Seikan Group Holdings, Ltd.

Fukuoka Packing Co., Ltd.

Munemitsu Hirotsu

Kunihiro Yoshimura

Wataru Kurokawa

Mitsuhide Aihara

Masanobu Matsubara

Marie Sasaki

Keisuke Yoshida

Masahiko Matsukawa

Kenji Yanada

Akihiro Yoshida

Satoshi Mikami

Naomi Taguchi

Miwa Uchikawa

Satoko Harada

Satoko Fukutomi

Kousuke Sasaki

Yoshiharu Shimada

There is provided a surface-treated steel sheet () comprising: a tin-plated steel sheet () obtained by tin-plating a steel sheet (); a phosphate compound layer () containing tin phosphate formed on the tin-plated steel sheet (); and an aluminum-oxygen compound layer () on the phosphate compound layer (), a main constituent of the aluminum-oxygen compound layer () being an aluminum-oxygen compound; wherein, when the 3dspectrum of tin in the aluminum-oxygen compound layer () is determined using an X-ray photoelectron spectroscopy, the ratio of the integration value of the profile derived from tin oxide to the integration value of the profile derived from tin phosphate (tin oxide/tin phosphate) is 6.9 or more.

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

There is provided a surface-treated steel sheet () comprising: a tin-plated steel sheet () obtained by tin-plating a steel sheet (); a phosphate compound layer () containing tin phosphate formed on the tin-plated steel sheet (); and an aluminum-oxygen compound layer () formed on the phosphate compound layer (), a main constituent of the aluminum-oxygen compound layer being an aluminum-oxygen compound.

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 surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/mand the amount of F being not less than 12 mg/min the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.

Surface-treated steel sheet, process for producing the same and resin-coated surface-treated steel sheet

Provided is a method for producing a surface-treated steel sheet including the step of forming a layer mainly composed of an oxygen compound containing Al onto a tin-plated steel sheet by conducting cathode electrolytic treatment to the tin-plated steel sheet using an electrolytic treatment solution containing Al ions and nitrate ions. For the electrolytic treatment solution, an electrolytic treatment solution not containing F ions and where the amount of nitrate ions contained is 11,500 to 25,000 ppm by weight is used.

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

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Kanagawa, Japan

Munemitsu Hirotsu