| 摘要 |
PROBLEM TO BE SOLVED: To provide a building board which dispenses with special rolling or press working and exhibits an excellent form without inconvenience even if it is molded with various embossing finish thereon, because a part of bent portions of the building board is subjected to ridge-like irregularity formation including a plurality of ridges. SOLUTION: The long building board which has the bent portions on both ends thereof, is characterised in that at least a central decorative surface is subjected to the embossing finish, and at least a part of one of the bent portions is subjected to the ridge-like irregularity formation. In a region of the ridge like irregularity, the ridges extend orthogonally to a longitudinal direction of the building board and have a height progressively increasing toward the lateral end of the building board. COPYRIGHT: (C)2005,JPO&NCIPI
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