| 摘要 |
The present invention relates to a packaging box, comprising: a rectangular bottom; side parts, which are formed by bending each corner of the bottom upward and include four side walls composed of inner and outer walls that are obtained by folding with respect to a folding portion formed at the center in the horizontal direction; an insertion protrusion, which protrudes upward from one side of the top end portion of at least one side wall out of the four side walls; and at least one reinforcement part, which has a break line formed near the inner wall side end portion of the side wall next to the side wall having the insertion protrusion formed thereon and is supported on the top end portion of the side wall having the insertion protrusion formed thereon if the side walls are folded, while being broken from the side wall, wherein the reinforcement part has an insertion groove formed at one side correspondingly to the insertion protrusion, and the insertion protrusion is inserted into and coupled to the insertion groove when supported on the top end portion of the side wall having the insertion groove formed therein. |
