| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-piece structure packing box including a top box case and a bottom case, which does not require gluing, and assembling and disassembling of the bottom case and can be performed easily.SOLUTION: A bottom case 1 includes a rectangular bottom plate 11, a pair of long side plates 12 formed on both sides of the bottom plate 11 in a longitudinal direction, and a pair of short side plates 13 formed on both sides of the bottom plate 11 in a lateral direction, which are respectively folded to form a tray, and a protruding piece 132 of each short side plate 13 is locked with an engaging portion 126' of each long side plate 12. The engaging part 126' is formed by notching a folded end portion formed by folding to overlap a folded side piece 126b of a second edge piece 126 formed extending from the long side plate 12 in the long direction. When folding the long side plate 12 and the short side plate 13, by inserting the short side plate 13 into an overlapped section S of the second edge piece 126, the protruding piece 132 of the short side plate 13 engages to be locked to a notch 127 of the second edge piece 126. |
