| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging box which has a rigid shock absorbing material at the bottom section and has a high shock absorbing characteristic. SOLUTION: An outer bottom plate 9, a folding-back plate 10 and an inner bottom plate 11 are folded back to form a double-bottom wall 40. A bottom holding piece 20 protruded at the tip of a shock-absorbing frame 41 at the bottom end is inserted into a slit 14 formed at the base section of the folding- back plate 10 to form a bottom segment in rigid state. In addition, a folding- down plate 12 and inner plates 44 extended from the inner bottom plate 11 are folded over each other to form a leg 43, an outside part of the inner bottom plate 11 acting as the upper surface of the double bottom wall 40 is supported by the leg 43. A load of commodity is supported by the leg 43 and at the same time, the folding-up plate 10 is inclined outwardly to allow a flexing at the inner side of the inner bottom plate 11 to be carried out and then the bottom surface of the commodity is protected.
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