Toyo Kohan Co., Ltd.

Toyo Seikan Co., Ltd.

Toyo Seikan Group Holdings, Ltd.

Nippon Paint Surf Chemicals Co., Ltd.

Kunihiro Yoshimura

Wataru Kurokawa

Munemitsu Hirotsu

Masahiko Matsukawa

Mitsuhide Aihara

Shinichi Taya

Masanobu Matsubara

Marie Sasaki

Keisuke Yoshida

Seitaro Kanazawa

Kenji Yanada

Miwa Iida

Naomi Taguchi

Akihiro Yoshida

Naomi Iida

Satoko Fukutomi

Satoshi Mikami

Miwa Uchikawa

Satoko Harada

Kousuke Sasaki

Tomoko Manita

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.

[Problem] To provide a polyester resin-coated metal sheet which has excellent coating material adhesion capable of withstanding severe forming processing while retaining high decorative property and photoluminescence property and a container using the same. [Solution] The polyester resin-coated metal sheet of the present invention includes a metal sheet, and a non-oriented polyester resin formed of a plurality of layers provided on at least one surface of the metal sheet. A surface layer and an adjacent layer in contact with the surface layer, of the plurality of layers, have a difference therebetween in melting temperature of not less than 10&#xb0; C., and a difference in tensile stress at an elongation of 250% under an environmental temperature of 70&#xb0; C. of less than 3 MPa in tensile tests in a single-layer film state corresponding to each layer, and the surface layer contains fine particles.

Polyester resin-coated metal sheet and container using same

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

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

To provide a bath for surface treatment capable of forming a surface-treating film having excellent corrosion resistance by a high-speed electrolytic treatment, and a method of producing a surface-treated steel plate having excellent corrosion resistance and closely adhering property to the coating maintaining good productivity. A bath for surface treatment used for forming a surface-treating film on the surface of a steel plate by cathodic electrolysis, the bath for surface treatment containing Zr and/or Ti, and a polycarboxylic acid.

Bath for surface treatment, method of producing surface-treated steel plate by using the bath for surface treatment, and surface treated steel plate produced by the same method

A surface-treated steel plate obtained by forming, on at least one surface of the steel plate by cathodic electrolysis, a surface-treating film which contains a mixed oxide of an oxide of Fe and at least one of an oxide of Zr or an oxide of Ti, and a polycarboxylic acid, the amount of Zr or Ti, or the total amount of Zr and Ti if both of them are present, being from 3 to 300 mg/mand the amount of C being from 0.1 to 5.0 mg/m.

Growing community of inventors

Kudamatsu, Japan

Kunihiro Yoshimura