RESIN-COATED ALUMINUM MATERIAL FOR CAPACITOR CASE, CAPACITOR CASE USING IT, AND CAPACITOR USING THE CAPACITOR CASE

摘要

PROBLEM TO BE SOLVED: To provide a resin-coated aluminum material for a capacitor case which is excellent in adhesiveness after it is deep-drawn for the capacitor case, the capacitor case formed thereof, and the capacitor using the capacitor case. SOLUTION: In the resin-coated aluminum material for the capacitor case, a chemical conversion film is provided on the roughened surface of aluminum or aluminum alloy in which the center line mean roughness (Ra) is >=0.4μm at least on one side, the ten-point mean roughness (Rz) is >=6μm, and the number of ridges crossing the line at 0.5μm above the center line of the roughness curve is at least 5/1.0 mm, and further an organic resin film is provided on this chemical conversion film.