| 摘要 |
The present invention relates to a resin composition for an under coat of an UV coating layer and a coated steel sheet using the resin composition. The coated steel sheet according to the present invention comprises a material steel sheet; an under coat layer including a cured product of a resin composition for the under coat layer which contains a main resin and a metal powder and which satisfies a condition of the following formula 1, the under coat layer being formed on one side or both sides of the material steel sheet; and a top coat layer formed on the under coat layer and containing a radical compound, thereby providing a superior appearance, scratch resistance, corrosion resistance and a superior weldability. |
