| 摘要 |
PROBLEM TO BE SOLVED: To secure high pressure-resistant strength by forming an outline for receiving a product in paired intermediate walls by laminating a pair of hollow cushions and to ensure easy reception of a cushion assembly into a packaging box by holding the pair of cushions through an opening. SOLUTION: A pair of respective cushions 10a, 10b holding an end of a product from upward and downward are formed to be hollow comprising respective open ends 11a, 11b positioned in opposite directions, respective closed ends 12a, 12b and respective intermediate walls 13a, 13b extending therebetween, wherein external force mainly functioning to a vertical direction is received mainly by the respective intermediate walls 13a, 13b to obtain high pressure- resistant strength. On the other hand, a fixing box 20 receives the respective cushions 10a, 10b from an upper opening 21 and holds them in a stacked state. To do so, a lid 22 for closing the opening 21 is provided, and a protruding piece 220 extending its tip end is inserted into a slit 23 formed on an upper part of a side wall of the fixing box 20 to lock a notch 221 of the protruding piece 220, thereby keeping the lid 22 closed.
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