| 摘要 |
PROBLEM TO BE SOLVED: To provide excellent nigrescent resistance, paint adhesive properties while maintaining excellent corrosion resistance. SOLUTION: This organic composite coated steel plate comprises a steel plate executed with a zinc or zinc alloy plated layer, a chromate treated layer formed on the plated layer and having an adhesive amount of a range of 1 to 200mg/m<2> in terms of metallic chromium, and a resin film formed on the treated layer and having a range of 0.1 to 5μm of thickness. The film contains composite resin containing a composite resin of (A) a mixture of an ethylene ionomer resin and an epoxy emulsion of 60 to 98wt.%, (B) silica fine particles of 1 to 40wt.% as a main component.
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