| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase strength of a packing box made of a reinforced corrugated fiberboard, and to reduce an article transportation cost by enabling the packing box to be used by selectively changing a storage volume depending on the size, quantity and the like of an article to be packed.SOLUTION: A packing box 1 comprising a bottom lid 2, a side plate 3 and an upper lid 4 is formed of a reinforced corrugated fiberboard, and the side plate 3 comprises an outer cylindrical body 31 and an inner cylindrical body 32. The first and second inner and outer cylindrical bodies different in height are selectively combined together to make the height of the side plate 3 freely adjustable.</p> |
