| 摘要 |
PROBLEM TO BE SOLVED: To find out a multi-layer coating film forming method capable of omitting a chipping primer coating process and excellent in chipping resistance and finish properties, in the body of an automobile. SOLUTION: The multi-layer coating film forming method comprises a process 1: a process for applying cationic electrodeposition coating to an article to be coated to form a coating film, a process 2: a process for washing the surface of the coating film due to the process 1 and subsequently removing moisture of the article to be coated by a setting or air blow means, a process 3: a process for filling an immersion (dip) tank with an aqueous dispersion (A) of a urethane resin to immerse the article to be coated in a washing tank and forming a film of the aqueous dispersion (A) of the urethane resin simultaneously with the washing of the article to be coated, a process 4: a process for applying air blow and/or shaking, which shakes the article to be coated forward and rearward or up and down, to the article to be coated to remove the excessively bonded aqueous dispersion (A) of the urethane resin or making the aqueous dispersion (A) penetrate the gap or bag part of the article to be coated and a process 5: a process for heating the coating film to dry and cure the same. COPYRIGHT: (C)2004,JPO
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