Importance

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Abstract

The present invention relates to an aluminum material to which a surface treatment is performed, and has as its objective the provision of a surface-treated aluminum material that has excellent adhesive properties with organic resin film. The present invention further aims to provide a method for producing the aforementioned. In the present invention's surface-treated aluminum material, a non-porous anodic oxide film is formed to the surface of the aluminum or aluminum alloy. This non-porous anodic oxide film has a thickness in the range of 5.about.800 nm, a porosity of 20% or less, and contains in an amount of 50 ppm or more at least one of silicon, phosphorous, boron or carbon as a component. As a result of this structure, the adhesive properties between organic resin film and non-porous anodic oxide film can be increased. Further, if the present invention's surface-treated aluminum material to which an organic resin film has been laminated is employed in various containers such as beverage cans, or in decorative boards used in furniture or interior construction materials, peeling will not occur when the material is subjected to further working. Moreover, corrosion does not occur even when the article is used over a long period of time, making it possible to obtain an article that demonstrates resistance to corrosion and excellent adherence properties with organic resin film.

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First Claim