| 摘要 |
PROBLEM TO BE SOLVED: To provide a body bulge preventive corrugated fiberboard box which prevents slug when manufacturing the body bulge preventive corrugated fiberboard box from being produced and prevents an opening in the packaged state from occurring.SOLUTION: In a corrugated fiberboard box, a square cylindrical circumferential wall is formed by facing lateral sheets 1 and edge sheets 2 respectively, a top surface is closed by successively folding back inner flaps 6 and outer flaps 7 respectively extended from upper ends of the edge sheets 2 and the lateral sheets 1, at the same time, chamfer parts 8, 9 are formed by putting pleat lines 6a, 7a at intervals from pleat lines 2a, 1a of boundaries respectively with the edge sheets 2 and the lateral sheets 1 on base parts of the inner flap 6 and the outer flap 7 and, thus, body bulge upon stacking is prevented. Therein, on the lateral end part of the inner flap 6, a part divided by an oblique fold line 10 extended to obliquely inner side from a corner of the base part side on the chamfer part 8 and a lateral fold line 11 put at an interval from the lateral edge on the tip end side from the chamfer part 8 is subjected to weak working so as to bend by being pressed against the base part of the outer flap 7 upon bending of the outer flap 7. |
