| 摘要 |
<P>PROBLEM TO BE SOLVED: To make it difficult to open a perforated opening window formed at a wall side of a continuous part between a wall and a cover when assembling a corrugated box by folding the corrugated cardboard and to secure the strength of the assembled corrugated box. <P>SOLUTION: In the corrugated cardboard, a first pressurizing recessed linear part 10 inside a valley fold is formed at a position which is a continuous part between a wall 4 and a cover 7 and is inside the corrugated box 1 when an unopened opening window 9 is formed at a wall 4 side of the continuous part between the cover 7 and the wall 4 in a perforated state, and a second pressurizing recessed linear part 11 is formed at a position which is a continuous part between the wall 4 and the cover 7 and is outside the corrugated box 1. The second pressurizing recessed linear part 11 is located to be closer to a cover 7 side than a corrugated box internal extension of the wall 4 when the cover 7 is continuous to the wall 4 in which the opening window 9 is formed is folded against the wall 4. <P>COPYRIGHT: (C)2013,JPO&INPIT |
