| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing box that has sufficient lock function that is easy to be opened and that may be shaped into the box precisely and securely.SOLUTION: A packing box having a front panel, side panels, a back panel, a lid part, side flaps formed on edges of the side panels, and an insertion flap formed at an end of the lid panel, in which sides of the side flaps have locking parts, the insertion flap has a pressing part consisting of a recess on the front side of the insertion flap and a salient on the rear side of the insertion flap and consisting of a combination of a part parallel to a folding line of the lid part and the insertion flap and a part non-parallel to the folding line of the lid part and the insertion flap, the part of the pressing part parallel to the folding line is arranged at the position that may engage with the locking part, and the part of the pressing part non-parallel to the folding line extends to the folding line more than the part of the pressing part parallel to the folding line arranged at the position that may engage with the locking part. |
