| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a double-layered or multilayered coating film having excellent rustproof properties and coating film appearance using a wet-to-wet coating system capable of shortening a coating process and reducing cost and environmental load. SOLUTION: The double-layered coating film forming method includes an electrodeposition coating process for applying a cation electrodeposition coating composition to article to be coated by electrodeposition coating to form an uncured electrodeposition coating film, a preheating process for preheating the obtained electrodeposition coating film to form an uncured double-layered separated coating film, a light irradiation process for irradiating the obtained double-layered separated coating film with light, an intercoating process for applying an intercoating composition on the irradiated electrodeposition coating film and a first heating process for heating the electrodeposition coating film and the intercoating film at the same time to cure them. COPYRIGHT: (C)2006,JPO&NCIPI
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