METHOD FOR PRODUCING COATED METAL STRIP

摘要

A coating containing acid-modified polypropylene and 5 mass% or more of nonvolatile matter is applied to a traveling metal strip in a state in which the surface temperature of the metal strip is 60°C or lower. Next, the coating applied to the metal strip is baked at 80-250°C, and a coating film having a film thickness of 0.3 μm or greater is formed on the traveling metal strip. The proportion of acid-modified polypropylene to resin total mass in the coating film is 40 mass% or higher. The traveling metal strip is then wound after being cooled to a surface temperature of 80°C or lower.