Dainippon Ink and Chemicals, Incorporated

Nisshin Steel Co., Ltd.

Nippon Decor, Inc.

Akihiro Sawaguchi

Hiroshi Matsuo

Hidetoshi Yamabe

Shuzo Mizuno

Keiichi Sawaya

Toshio Nagatomo

Yukihiko Kawaharada

Hideyasu Kamikawa

Mitsutaka Nanbo

Tetsuo Sakai

Hiroyuki Tabe

Michiharu Morishige

Shinji Kato

Using a hydraulic transfer film wherein a transfer layer is composed of a decorative layer made of a printing ink coating film or a paint coating film, the transfer layer is hydraulically transferred onto a target body for transfer made of a metal substrate having a cured coating film layer in which a xylene absorption amount is within a range from 3.5 to 100 g/m. Alternatively, using a hydraulic transfer film wherein a transfer layer has a protective layer made of a radiation-curable resin or a thermosetting resin, the transfer layer is hydraulically transferred onto a target body for transfer made of a metal substrate having a cured coating film layer in which a xylene absorption amount is within a range from 10 to 100 g/m. Because of good hydraulic transferability and good coating film adhesion between the metal substrate and the transfer layer, it is made possible to produce a metal substrate, which can be stored for a long period and is superior in designed appearance and also has a transfer layer with an arbitrary shape bonded firmly thereto.

Hydraulic transfer method

A coated metal sheet has undercoat and topcoat paint films formed on the metal substrate. The undercoat film is composed of polyester paint, which is preferably prepared by adding methylated or butylated melamine resin as a curing agent to hydroxyl group-containing macromolecular polyester resin having a glass-transition temperature of 10.degree. C. or higher. The topcoat film is composed of the polyester paint which is preferably prepared by adding an isocyanate curing agent in an amount of 10 wt. % or more to hydrocyl group-containing macromolecular polyester resin. The substrate metal may be a chemically converted steel sheet, galvarnized steel sheet, stainless steel sheet or aluminum sheet. Since the coated steel sheet is bonded with excellent shear strength and durability, it is useful as the casing of electric home appliance or business machine, or a structural member or part for building or furniture.

Coated metal sheet bondable with adhesive

Growing community of inventors

Tokyo, Japan

Akihiro Sawaguchi