Nkk Corporation

Other

Tdk Corporation

Naoyuki Ooniwa

Yoshinori Yomura

Hiroshi Ishikawa

Yoshihiko Yasue

Hiroshi Kagechika

Takeshi Adaniya

Tadahiko Mishima

Hiroyuki Kato

Takaaki Kondo

Kazuhide Ohe

Hiroyuki Nakada

Hirohide Furuya

Saori Kajihara

Tomoyoshi Ohkita

Mitsuo Okahara

A laminated steel sheet for cans comprises: a steel sheet; a metallic chromium plated layer with a 5 to 150 mg/m.sup.2 coating weight formed on the sheet; a hydrated chromium oxide layer with a 3 to 15 mg/m.sup.2 coating weight in terms of chromium formed on the metallic chromium layer; a bonding layer formed on the hydrated chromium oxide layer; and a biaxially oriented polyethylene terephthalate resin film formed on the bonding layer with a strip-shaped margin left for welding, the bonding layer being obtained by curing an adhesive having bisphenol A epoxy resin which has 15,000 to 30,000 number average molecular weight and is from 70 to 90 wt. % of said bonding layer with the remainder being resol phenol resin which has a base of bisphenol A. Other related laminated sheets are also provided.

Laminated steel sheet for cans

A laminated steel sheet for a welded can which includes: a steel sheet; a plating layer formed on the steel sheet, the plating layer having a surface roughness represented by a PPI of 5 to 150, the plating layer having a tinning layer and a chemical treatment layer, the tinning layer being formed on the steel sheet and the chemical treatment layer being formed on the tinning layer, the tinning layer having a coating weight of 0.9 to 2.8 g/m.sup.2, the chemical treatment layer containing 5 to 50 mg/m.sup.2 of metallic chromium and hydrated chromium oxide containing 5 to 25 mg/m.sup.2 of chromium; and a resin film thermo-compressed on the plating layer in a band form, the resin film being a biaxially oriented film of a polyethylene terephthalate copolymer, the polyethylene terephthalate copolymer having an acid component of which 0.5 to 10 mol % is isophthalic acid.

Laminated steel sheet for welded can

The invention provides a method for producing a coated steel sheet for a can. A film of aluminum, aluminum alloy, titanium or titanium alloy 0.005 to 5 .mu.m thick is plated on one surface of a steel sheet by means of a dry process. A metal film is also plated on the other surface of the steel sheet by means of a dry process.

Plated steel sheet for a can

Plated steel sheet for a can comprises: a steel sheet; an Al or Al alloy plated film of 0.005 to 5 .mu.m in thickness on one surface of the steel sheet; and a plated film of 0.005 to 5 .mu.m in thickness on the other surface of the steel sheet, the plated film comprising a metal selected from the group consisting of Ti, Zn, Ni, Co, Cr, Mo and Sn; and furthermore, Plated steel sheet for a can comprises: a steel sheet; a Ti or Ti alloy plated film of 0.005 to 5 .mu.m in thickness on one surface of the steel sheet; and a plated film of 0.005 to 5 .mu.m in thickness on the other surface of the steel sheet, the plated film comprising a metal selected from the group consisting of Al, Zn, Co, Mo and Sn.

A method for continuously electro-tinplating a metallic material comprising the steps of: using an acidic electro-tinplating solution containing phenolsulfonic acid or a salt thereof and tin ion, using an insoluble anode, and causing a DC electric current to flow between the insoluble anode and a metallic material, while replenishing the acidic electro-tinplating solution with tin ion, thereby forming a tinplating layer on the surface of the metallic material. The above-mentioned anode comprises an electric-conductive substrate, and a film comprising at least iridium oxide, formed on the surface of the electric-conductive substrate.

Method for continuously electro-tinplating metallic material

Growing community of inventors

Tokyo, Japan

Naoyuki Ooniwa