| 摘要 |
PROBLEM TO BE SOLVED: To shorten the time required in the change of a color in a two-pack coating apparatus. SOLUTION: Main agent flowmeters 28A and 28B are provided between a color change valve 12 for a main agent and main agent supply sources 22A and 22B and curing agent flowmeters 30a and 30b are provided between a color change valve 13 for a curing agent and curing agent supply sources 23a and 23b. At the time of washing, the color change valve 12 for the main agent and the color change valve 13 for the curing agent are changed over to supply a washing liquid to a coating gun 10 to wash off the main agent, the curing agent and two-pack coating remaining between a color change valve 11 and the coating gun 10. Since the flowmeters 28A, 28B, 30a and 30b are arranged on the side more upstream than the upstream side of a washing liquid flow route (that is, the color change valve 11), the washing liquid does not flow through the flowmeters 28A, 28B, 30a and 30b to prevent the long-term washing time caused by the passage of the washing liquid through the flowmeters 28A, 28B, 30a and 30b. COPYRIGHT: (C)2008,JPO&INPIT
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