| 摘要 |
<p>PURPOSE: To prevent an outer appearance of a box from being damaged when a cut portion is cut and bent. CONSTITUTION: There are provided a cutting portion 103 to be cut; cutting and bending portion 105 (107, 108, 109) for connecting both ends of the cutting portion 103; and a hole 110 for use in distributing (dispersing) a concentrated stress acting on both ends of the cutting portion 103. When material at a side surface of a carton box 101 is cut at the cutting portion 103 indicated by a solid line to open a knob hole, a knob 104 is bent regularly at the cutting and bending portion 105 (any of 107 to 109) in a simultaneous manner. With such an arrangement as above, it is possible to avoid formation of an irregular cutting and bending part and a breakage caused by the concentrated stress at both ends of the cutting portion 103.</p> |
