METHOD FOR PRODUCING COATED METAL STRIP
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United States of America Patent
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Jan 25, 2016
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Jan 29, 2015
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Abstract
A coating that contains acid-modified polypropylene and that contains 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.
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