| 摘要 |
PROBLEM TO BE SOLVED: To provide a bottom-lock type packaging box which does not generate a gap caused by deformation of a bottom lid piece, and can be assembled by one touch. SOLUTION: A blank 10 is folded along a folding line (a) in the longitudinal direction, and then, a first end board tongue piece 111, a surface side board bottom piece 121, a second end board tongue piece 131 and a back face side board bottom piece 141 are respectively folded along a folding line b in the lateral direction. A fixed piece 123 is folded into a valley shape along a folding line (c) in the diagonal direction, and a fixed piece 143 is folded into the valley shape along the folding line (c) in the diagonal direction. The surface of the second end board tongue piece and the back face of the fixed piece 143 are stuck, and the surface of the first end board tongue piece and the back face of the fixed piece 123 are stuck. A paste margin 15 is stuck on the back face of the first end board tongue piece, and when the blank folded flatly is raised into a square cylindrical shape, a fitting notch 122 of the surface side board bottom piece and a fitting notch 142 of the back face side board bottom piece are fitted to each other and are fixed on the bottom part of the packaging box. COPYRIGHT: (C)2006,JPO&NCIPI
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