| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging box having a bottom surface partially bonded and constituted in a single operation, and providing bottom surfaces of various shapes.SOLUTION: In a packaging box 1, a bottom flap 5 corresponding to the shape of the packaging box 1 to be obtained, is extended from the lower edge of any side wall constituting a box body 1a, through a folding line b, and a bottom flap holding piece 6 bonded and connected to the bottom flap 5 is extended from the lower edge of the side wall or another side wall, through a folding line c. The bottom flap 5 has right and left edges along which tongue pieces 5c and 5d making close contact with the lower inner surfaces of side walls of the box body 1a are integrally attached through a folding line 5a, the bottom flap holding piece 6 has a front end having an adhesion piece 6a through a folding line h, the front or back side of the adhesion piece 6a is formed with a bonding portion 6b, and the bonding portion 6b is fixedly bonded to an adhesion surface 5e or 5f on the front side of the bottom flap 5, so that the packaging box is folded and self-supported. |
