| 摘要 |
PROBLEM TO BE SOLVED: To provide a producing method of a proposition board which causes no harmful substance by solving such a problem that the conventional panel is hardly recycled and is apt to cause the harmful substance because of petrochemicals. SOLUTION: In order to rib a card board 1, the card board is folded into angles and the ribbed card boards 2 are stuck in the longitudinal and lateral directions alternately. By using the card board having adhesive on the half surface with a strippable paper, a multi-purpose panel which is safe in the environmental aspect can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI
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