| 摘要 |
<P>PROBLEM TO BE SOLVED: To facilitate unpacking by an unpacking band while preventing body bulging due to buckling in a dividing unsealing region of a corrugated cardboard box, to facilitate unsealing while a finger is firmly engaged with a flap without injuring the finger upon the unsealing by the flap, to perform cutting without crushing a sheet when making a tear line of the unsealing band into a blank, and to hardly cause the body bulging during stacking. <P>SOLUTION: Two tear lines 13 forming an unsealing band 11 in a manner allowing tearing in an unsealing direction from an unsealing opening 12 provided at a pair of narrow side plates 3, 4 of a corrugated cardboard box A are formed of a cutting line 13a intermittently cut and formed in an unpacking direction in such a way that it is pierced to a depth reaching a front liner a2 from a rear liner a1 side. The cutting line 13a has a sectional trapezoidal shape that is wide at the rear liner a1 side and narrow at a front liner a2 side. A full-cutting line 13b is formed at each important point of the two tear lines 13. <P>COPYRIGHT: (C)2012,JPO&INPIT |
