| 摘要 |
PROBLEM TO BE SOLVED: To provide a building board whose surface has a block-like pattern with high designability. SOLUTION: In the block-like pattern of the surface of the building board 1, a linear part (a), a curved part (b) and a bent part (c) are mixed in either or both of side edges 3A and 4A for defining longitudinal and lateral joint grooves 3 and 4 for partitioning a protrusive block 5, thus, widths of the joint grooves 3 and 4 are diversely varied, the designability of the joint grooves 3 and 4 is enhanced, and the contour of the protrusive block 5 is formed in a quarry shape so as to impart a sense of nature. COPYRIGHT: (C)2005,JPO&NCIPI
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