| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrugated fiberboard box having a seamless bottom wherein the box can be simply and quickly folded from a single piece of a corrugated fiberboard, there is no fear of the bottom falling down with a heavy object, and a problem that strength and appearance of the box depends on a direction of corrugation of a corrugating medium of the corrugated fiberboard has been solved. SOLUTION: The corrugated fiberboard is characterized by the direction F of the corrugation of the corrugating medium directed slantly to each ridge direction g of a box which has been folded. A concrete form of the corrugated fiberboard comprises a side wall face 2 connected with each of sides of a rectangular bottom face 1, a folding piece 3 extending between each pair of adjacent side wall faces with an overlap crease B extending from each corner of the bottom face, and an engaging piece 6 equipped with latching notches 7 for latching a lid piece 4 on one of sides and for latching the folding piece 3 on the other side.
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