| 摘要 |
PROBLEM TO BE SOLVED: To prevent a corrugated cardboard from bending on a crease line of a tearing band when a box is formed even if a thin corrugated cardboard is used, and prevent body swelling when boxes are stacked. SOLUTION: In the corrugated cardboard with the tearing band in which a standing plate 2 and a plane plate 3 are provided continuously via a ridge crease 1 and on the standing plate 2, the tearing band 7 for opening is provided between both ends and a cut starting part 8 of the tearing band 7 is also provided and the tearing band 7 is formed of two wave shape cutting lines 7a curving periodically and each cutting line 7a is a lead crease that a whole cutting part 7b penetrating from the front to the back of the corrugated cardboard and a half cutting part 7c cut to the middle in the thickness direction from the back side of the corrugated cardboard are lined alternately and the standing plate 2 and the plane plate 3 are folded along the ridge crease 1 for boxing, the amplitude center line of the wave shape cutting line 7a forming the tearing band 7 is tilted to the ridge crease 1, the boundary of the standing plate 2 and the plane plate 3 and the cutting line 7a is lengthened per unit length in direction of the ridge crease 1 to increase bending strength. COPYRIGHT: (C)2010,JPO&INPIT
|
