| 摘要 |
PROBLEM TO BE SOLVED: To provide a girder of a high pressure-resistance for a pallet made of a corrugated fiberboard by utilizing a fact that the pressure-resistant strength at bent corners of the corrugated fiberboard becomes higher. SOLUTION: A rib plate comprising a band-shaped corrugated fiberboard having two layers is formed by doubly folding the long-sized corrugated fiberboard. Then, a supporting frame comprising a folded back structure of an extended section of the rib plate is formed. Then, a supporting frame- constituting plate is made into a thickness plate and a folded back plate for the supporting frame. The folded back plate is fitted on the rib plate by a fitting piece, and the supporting frame is formed on both sides of the rib plate as the constitution. COPYRIGHT: (C)2003,JPO
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