Toyo Kohan Co., Ltd.

Toyo Seikan Group Holdings, Ltd.

Toyo Seikan Co., Ltd.

Toyo Seikan Kaisha, Ltd.

Nippon Paint Surf Chemicals Co., Ltd.

Shinichi Taya

Kunihiro Yoshimura

Masahiro Kai

Masahiko Matsukawa

Kota Sadaki

Wataru Kurokawa

Etsuro Tsutsumi

Junichi Tanabe

Seitaro Kanazawa

Masanobu Matsubara

Norihito Saiki

Miwa Iida

Naomi Iida

Hidekazu Tomaru

Hiroshi Doi

Yasuyuki Ikeda

Tomoko Manita

Etsuro Tutsumi

Wataru Kurokakwa

[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 container-use surface treated steel sheet which is manufactured without using chromium and exhibits excellent working adhesion with a coated organic resin, a method of manufacturing the container-use surface treated steel sheet, an organic resin coated surface treated steel sheet. The container-use surface treated steel sheet is a surface treated steel sheet where nickel plating is applied to at least one-side surface of surfaces of a steel sheet by coating, wherein nickel plating has a fine particle shape formed by fine particles which has particle density of 2 to 500 pieces/&#x3bc;mand having an average particle size of 0.05 to 0.7 &#x3bc;m. The container-use surface treated steel sheet is also characterized in that a coating weight of the nickel plating of the container-use surface treated steel sheet is 0.1 to 12 g/m, metal tin is contained in coating of the nickel plating, and an amount of metal tin is 0.05 to 0.1 g/m. The organic-resin-coated surface treated steel sheet of the present invention is characterized in that an organic resin layer is formed on at least one surface of the container-use surface treated steel sheet. The metal can is formed by working the organic-resin-coated surface steel sheet.

Surface-treated steel sheet for container having excellent processing adhesion to resin, method for manufacturing same, and can

There is provided a method of manufacturing a cylindrical container using a metal sheet on at least one surface of which the metal is exposed. The method includes: obtaining a blank having a hexagonal shape from the metal sheet; and processing the blank into a cylindrical shape by pressing a central part of the blank with a punch in a state in which a peripheral part of the blank is clamped between a die for drawing process and a blank holder. The method is characterized by the following features. At least one of the die for drawing process and the blank holder has a groove-formed area at a portion of a surface thereof. The portion corresponds to a side of the blank. The groove-formed area is formed with a plurality of grooves along the circumferential direction. The blank is processed into the cylindrical shape by clamping the peripheral part of the blank between the die for drawing process and the blank holder so that the surface of the blank on which the metal is exposed is in a state of facing the groove-formed area and the side of the blank is in a position that corresponds to the groove-formed area.

Method of manufacturing cylindrical container

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.

Surface-treated steel plate

A method of drawing and ironing a resin film laminated metal sheet for forming a can body having a bottom portion, a can wall portion and a flange-forming portion by drawing the resin film laminated metal sheet obtained by laminating at least one surface of a metal sheet with an organic resin film, followed by ironing by using a punch and a plurality of dies neighboring each other. The can wall is effectively prevented from being broken by a decrease in the thickness of the can wall, and drawn and ironed cans are efficiently formed having a thickness which is decreased as designed.

Method of drawing and ironing a resin film laminated metal sheet and resin film laminated drawn and ironed can using the same method

A method of drawn and ironed processing of a resin coated metal sheet, in which in the drawn and ironed processing of resin coated metal sheet, there can be obtained a can body of satisfactorily small wall thickness and at an opening edge part of the can body, the coating resin is free from any defect; and a resin coating drawn and ironed processed can produced thereby. There is provided a method of drawn and ironed processing of a resin coated metal sheet, comprising performing drawn and ironed processing of a resin coated metal sheet composed of a metal sheet having at least one major surface thereof coated with an organic resin with the use of a punch and a die into a can body, characterized in that ironing is conducted with the use of a punch having a small-diameter portion at its rear end so that the ratio of ironing at an opening edge part of the can body after shaping falls within the range of 0 to 15%. Further, there is provided a drawn and ironed processed can of resin coated metal sheet produced through the processing method.

Method of drawn and ironed processing of resin coated metal sheet and resin coated drawn and ironed can produced thereby

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Kudamatsu, Japan

Shinichi Taya