| 摘要 |
PROBLEM TO BE SOLVED: To improve the gloss of a colored resin-coated metallic sheet by using a metallic sheet with the specular gloss satisfying a specified expression to form a coating film. SOLUTION: The 60 deg. specular gloss G0 of a metallic sheet before a colored resin coating film is formed thereon is allowed to satisfy 40<G0<310. Meanwhile, the surface shape of the uncoated metallic sheet is also an important parameter to improve the gloss. Namely, the surface shape is set so that the center line surface roughness Ra of the metallic sheet and the peak number PPI exceeding the 100×10<-6> inch peak count level on the roughness curve per inch are allowed to satisfy 0.4<Ra <1.8 and 10<PPI<110, respectively. An electrogalvanized steel sheet is used as the metallic sheet before a colored resin coating film is formed thereon.
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