| 摘要 |
A box structure comprising box side walls, bottom wall, and two end walls. The two end walls each have substantially greater thickness than the side walls, and the bottom wall. The end walls have peripheral edges; the bottom wall and side walls have edge portions overlapping certain peripheral edges of the end walls. There is attachment structure attaching the bottom wall and the side wall edge portions to the end wall peripheral edges. The end walls consist essentially of lightweight, cellular, synthetic resin. The side walls and the bottom wall are defined by thin, inner and outer sheets and webs interconnecting the sheets. The webs are elongated, whereby parallel, lengthwise, elongated cells are formed by the inner and outer sheets and webs; the inner and outer sheets consist of synthetic resin, and the cells have length direction. The bottom wall and the side wall form a continuous strip, which is folded to fit against certain peripheral edges of the end walls; certain peripheral edges are flat. The webs extend at slant angles between the sheets, whereby the elongated cells have parallelogram configuration in planes normal to the length direction of the elongated cells. The elongated cells between the webs extend generally toward the end walls.
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