| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent a lid structure from easily opening and to facilitate casing operation to improve working efficiency. SOLUTION: The packaging box has a pair of flaps 14 foldably connected to a pair of opposite short sides of a rectangular upper end opening of a parallelopiped portion 12, a lower lid 15 foldably connected to one of a pair of opposite long sides of the rectangular upper end opening of the parallelopiped portion 12 to be folded over the flap 14 and an upper lid 16 foldably connected to the other of the pair of long sides to be folded over the lower lid 15. A protruding insertion part 18 is formed at the center of a tip side of the upper lid 16, while a cut-like inserted part 15a is formed at the center of a base end side of the lower lid 15, wherein the insertion part 18 and the inserted part 15a are formed in such shapes that once the insertion part 18 is inserted into the inserted part 15a, the insertion part 18 may not come out of the inserted part 15a.</p> |
