METHOD OF COATING POROUS PLATE

PROBLEM TO BE SOLVED: To provide a method of coating porous plates capable of suppressing, to the most, a coating unevenness of the rear surface and deterioration of the waterproofness of a porous plate. SOLUTION: In the method, an ALC (autoclaved lightweight aerated concrete) plate 10 of which the front surface is formed of concave parts 10a and convex parts 10b and the rear surface is formed of a plane, and a support plate 20 of which the both surfaces are formed of planes, are prepared. Then, the ALC plate 10 is placed on the support plate 20 so that the front surface of the ALC plate 10 comes into contact with the main surface of the support plate 20. Then, the ALC plate 10 placed on the support plate 20 is inserted to between a coating roller 31 and a transporting roller 33 together with the support plate 20 at the same time, so that the rear surface of the ALC plate 10 comes into contact with the coating roller 31 and that the main surface (plane) of the support plate 20 comes into contact with the transporting roller 33. Then, the ALC plate 10 and the support plate 20 are moved by the rotation of the transporting roller 33, and also, the rear surface of the ALC plate 10 in contact with the coating roller 31 is coated. COPYRIGHT: (C)2006,JPO&NCIPI