| 摘要 |
PROBLEM TO BE SOLVED: To prevent projecting parts for engagement from sticking out from a peripheral wall and reduce an amount of the use of corrugated cardboard, in a strawberry tray in the form of a box with a cross-shaped partition provided integrally in it, which is folded from one sheet of corrugated cardboard by an engagement system. SOLUTION: A sheet of corrugated cardboard 100 has such a form that, at both sides of a square middle face 1, left and right side walls 2 and 3, respectively, half bottoms 4 and 5, and vertical partitions 6 and 7 continues to each other in that order via main creases A and creases C and D. In the middle face, a plurality of cut-erection slits 12 are made parallelly for forming front and rear side-walls 8 and 9, respectively, and superimposed lateral partitions 10 and 11 so that they are formed in a louvering shape. The left and right side-walls form erecting auxiliary parts 13. Engagement slits 17 and 18 are made in the positions of interference which occurs when the corrugated cardboard is folded into a tray. In order to prevent the half bottoms from falling, the bases of the front and rear side-walls are provided with lock projections 40 so that they are continuous. At both ends of each crease D, slits 41 for insertion fitting are made. Further, one or both of the vertical partitions 6 and 7 are made smaller than the lateral partitions in height. |
