| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum lid material for cans which does not contain a harmful heavy metal such as chromium and which has excellent adhesion between an aluminum surface and a resin coating even if strong processing is performed and in which an acid-proof elution property is improved by applying a resin film and which can be manufactured at low cost. SOLUTION: A non-chromium type aluminum surface treatment material having excellent coating film adhesion during processing is obtained by providing a film which contains a thermoplastic or thermosetting resin as a chemically formed film layer, and contains zirconium or titanium as a main metal component, in which the amount of the film is 2-50 mg/m<SP>2</SP>and also more carbon component than the main metal component is contained in the outmost surface, further, less carbon component than the main metal component is contained in the depth where the main metal component shows the maximum concentration and in which magnesium concentration is≤15 mass %. COPYRIGHT: (C)2004,JPO
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