JP2004195753A5 - - Google Patents

Claims (8)

  By sequentially laminating an undercoat layer made of a first organic resin-based paint not containing a pigment and a topcoat layer made of a second organic resin-based paint containing a pigment on one surface of the aluminum plate, A lubricating coating film having a two-layer structure is formed, while a conductive coating film made of a third organic resin-based paint containing a conductive substance is formed on the other surface. Double-sided precoated aluminum plate with excellent press formability, design and electrical conductivity. The press formability, designability, and at least the second organic resin-based paint among the first and second organic resin-based paints that give the lubricating coating film contains an inner wax. Double-side precoated aluminum plate with excellent conductivity. The lubricating coating film contains a polyester resin having 400 to 1000 carbon atoms as a main component, and a pigment-free polyester resin-based paint is used as the first organic resin-based paint, and has a thickness of 1 to 20 μm. A polyester containing an inner wax in a ratio of 0.2 to 5.0 parts by weight and a pigment with respect to 100 parts by weight of the undercoat layer and the polyester resin having 400 to 1000 carbon atoms. the resin coating, by using as the second organic resin paint, according to claim 1 or claim 2, characterized in that it is composed and the overcoat layer formed in a thickness of 5~30μm Double-coated precoated aluminum plate with excellent press formability, designability and electrical conductivity. The press formability, design property, and electrical conductivity according to any one of claims 1 to 3, wherein the conductive coating film is formed using the third organic resin-based paint containing an inner wax. Double-sided precoated aluminum plate with excellent properties. The conductive coating film has a particle size of 1 to 2 times the film thickness of the conductive coating film with respect to 100 parts by weight of the polyester resin having 400 to 1000 carbon atoms, and the minor axis / major axis ratio is 0. A polyester resin-based paint containing a spherical Ni filler of 7 to 1 and an inner wax in proportions of 1 to 20 parts by weight and 0.1 to 4.0 parts by weight, respectively. used as resin coating, press formability according to any one of claims 1 to 4, characterized in that it is formed in a thickness of 1 to 20 [mu] m, both surfaces precoated with excellent design property and conductivity Aluminum plate. The mixing ratio of the inner wax in the third organic resin coating is, according to claim 4 or claim 5 which is 0.2 to 0.8 times the proportion of the inner wax in the second organic resin paint Double-coated precoated aluminum plate with excellent press formability, designability and electrical conductivity. The lubricating coating film and the conductive coating film are formed on a surface of an aluminum plate on which a coating type or a reactive type chromate layer or non-chromate layer is formed by a base treatment. Item 7. A double-side precoated aluminum plate excellent in press formability, designability and conductivity according to any one of items 1 to 6 . When performing press working using a double-side pre-coated aluminum plate excellent in press formability, designability and conductivity according to any one of claims 1 to 7 ,
A press working method characterized in that the surface on which the lubricating coating film is formed on the double-side precoated aluminum plate is positioned on the die side, while the surface on which the conductive coating film is formed is positioned on the punch side.