| 摘要 |
PROBLEM TO BE SOLVED: To enhance the compressive strength in a corrugated fiberboard box by a method wherein difference in level between the outside flap and the inside flap is filled and a gap between the outside flap and a partition sheet is eliminated, and the compressive load exerted on the outside flap is born from the beginning. SOLUTION: The corrugated fiberboard box is provided with longitudinal faces 1, 1 on both sides, lateral faces 2, 2 on both sides, inside flaps 3, 3 and outside flaps 4, 4 forming respectively the upper face and the bottom face. The partition sheets 11, 11 are inserted vertically in the box. Both ends in the height direction of the outside-flap supporting parts for bearing the outside flaps 4, 4 are protruded outwardly more than the inside flap-supporting parts to form a protruded parts 14. The protruded parts 14 fill the difference in the level between the inside and outside flaps to comes into contact with the outside flaps 4, 4. |
