| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating method of an ALC panel provided with decorative concave grooves, which comprises coating the surface of the ALC panel with a first coating material and thereafter coating the resulting coated surface with a second coating material and enables formation of a thick coating film of the second coating material, having recessed and projecting parts on the surface, without allowing the second coating material to stick to the inside of each of the concave grooves, and also automation of the coating operation. SOLUTION: This coating method comprises coating the whole surface of an ALC panel in the surface of which decorative concave grooves are formed, with a first coating material and thereafter, further coating all the parts other than the grooves of the resulting coated surface with a second coating material wherein the second coating with the second coating material is performed in a 0.1-0.6 kg/m2 coating weight per single coating run, while conveying the panel on a coating line and concurrently, automatically rotating a coating roller which is provided in its surface with recessed and projecting parts and also has a rubber hardness of >=10, in the same direction as the conveyance direction of the panel and at the same speed as the conveyance speed of the panel.
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