| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging box which can surely lock even when paper is thin and displacement on sticking is generated during manufacturing. SOLUTION: An outer flap 15 is bent at right angles by a crossing line between a back face 13 of a rectangular parallelepiped box and a top face to cover the top face. Inner flaps 16 are bent at right angles by a crossing line between a side face 12 of the box and the top face, and a projecting part 20 is formed at least one part on the side edge positioned on the side of a front face 11 of the box under a condition that it is overlapped on the inside of the outer flap 15. An inserting flap 17 is bent at right angles from the tip of the outer flap 15 and overlapped on the inside of the front face 11 of the box. An additional flap 18 is bent 180°from an tip of the inserting flap 17 and overlapped on the inserting flap 17. First notch parts 21 are provided on the inserting flap 17 side along a bent line between the outer flap 15 and the inserting flap 17 and are engaged with the projecting parts 20. Second notch parts 22 are provided at the tip of the additional flap 18 and extended in parallel to the first notch parts 21 and engaged with the projecting parts 20. COPYRIGHT: (C)2011,JPO&INPIT
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