| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrugated fiberboard cushioning material which can be easily assembled from a flat folded state. SOLUTION: An external face plate 5, a top plate 6 and an internal face plate 7 are connected to form an inner wall 1 and an end wall 2 with a double structure wherein a stop wall 3 and an edge wall 4 exhibit an L-shape. The inner wall 1 and the end wall 2 are bent so that their stop walls 3 are engaged with each other to retain its shape wherein a sum of sizes of the external face plate 5, the top plate 6 and the internal face plate 7 of the stop wall 3 in a connected direction is specified to be approximately equal to a sum of sizes of the external face plate 5, the top plate 6 and the internal face plate 7 of the edge wall 4 in a connected direction. By extending the stop wall 3 and the edge wall 4 flat and overlapping, they can be folded flat, and they can be quickly assembled from that state.
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