Surface-treated aluminum plate, organic-resin-coated surface-treated aluminum plate, can body and can lid formed by using the same
A surface-treated aluminum plate obtained by forming, on at least one surface of an aluminum plate, a conversion-coated layer that contains a polyester resin and a zirconium compound or a titanium compound. The surface-treated aluminum plate excellently adheres to an organic resin coating and can be used as a material for producing cans featuring excellent corrosion resistance and shock resistance.
1. A surface-treating solution for treating the surface of an aluminum plate by a conversion treatment, the surface-treating solution containing
a water-dispersible polyester resin,
fluorine ions, and
zirconium ions or titanium ions;
wherein said water-dispersible polyester resin is contained in an amount of 100 to 10,000 ppm, and said zirconium ions or said titanium ions are contained in an amount of 5 to 5,000 ppm.
2. The surface-treating solution according to claim 1 , wherein a polycarboxylic acid and/or a water-dispersible particulate component is contained.
3. The surface-treating solution according to claim 2 , wherein
said polyester resin is contained in an amount of 500 to 10,000 ppm,
said water-dispersible particulate component is contained in an amount of 100 to 3,000 ppm,
said polycarboxylic acid is contained in an amount of 5 to 2,000 ppm, and
said zirconium ions or said titanium ions are contained in an amount of 5 to 5,000 ppm.