| 摘要 |
PROBLEM TO BE SOLVED: To provide a precoated metal plate which has an improved flex resistance and corrosion resistance while retaining an excellent antifouling property of a specific precoated layer. SOLUTION: The precoated metal plate is composed of a metal plate having a ten-point average roughness Rz of 1.2-4.0μm, a chemical conversion coat formed at least one surface of the metal plate and a resin coat formed on the chemical conversion coat. The resin coat is composed of an undercoat formed on the chemical conversion coat and a topcoat formed on the undercoat. The undercoat contains a polyester-based resin, a melamine-based resin and an epoxy-based resin and has a tensile strength of 20-50 MPa. The topcoat contains an acrylic resin, a colloidal silica having an average particle size of≤0.1μm in an amount of 1-10 wt.% of the dried topcoat and a silicone compound having an alkoxyl group in an amount of 0.1-5.0 wt.% of the dried topcoat. COPYRIGHT: (C)2009,JPO&INPIT
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