| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a multilayer coating excellent in chipping resistance at low temperature. SOLUTION: In a coating formation method for forming a multilayer coating by successively applying a chipping-resistant coating material, an intermediate coating material, a base coat coating material, and a clear coat coating material onto an electrodeposition coating of a steel plate on which the electrodeposition coating is formed; a cured coating of the chipping-resistant coating material has an elongation percentage of 150 to 800% and a tensile strength of 150 to 600 kgf/cm<SP>2</SP>at -20°C, the intermediate coating material contains a flat pigment with an average particle diameter of 3 to 30μm and an average thickness of 0.1 to 3μm in an amount of 1 to 5 wt.% based on the entire amount of solid matter of the intermediate coating material, and the cured coating of the clear coat coating material has an elongation percentage of 20 to 80% and a tensile strength of 120 to 280 kgf/cm<SP>2</SP>at 20°C. COPYRIGHT: (C)2010,JPO&INPIT |
