| 摘要 |
PURPOSE:To enhance the close adhesiveness of a printing layer at the time of molding, by applying a composition consisting of a water-soluble polymer substance, a water-soluble zirconium compound and a specific ratio of an aminoalkylalkoxysilane compound to the surface of an aluminum plate material. CONSTITUTION:The aqueous composition applied to the surface of an aluminum plate material to which degreasing treatment is applied contains water-soluble polyacrylic acid as a water-soluble polymer substance, ammonium zirconium carbonate as a water-soluble zirconium compound and, further, a predetermined aminoalkylalkoxysilane compound. As the silane compound, gamma-amino propyltriethoxysilane is pref. used, and added to and compounded with the water-soluble polymer substance in the aqueous composition at least in a ratio of 100% or more. Printing is applied to the plate material after the film is dried and molding processing such as deep drawing is performed to obtain a product having a film high in close adhesiveness.
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