| 摘要 |
PROBLEM TO BE SOLVED: To provide a tray made of corrugated board, which can be built up from one sheet of corrugated board into a box-shape being excellent in strength and cushioning property, and is suitable for the packing of articles with weight such as fruit and vegetables. SOLUTION: For a corrugated board 101, to the four edges of a rectangular bottom surface 1, wall surfaces 2 are respectively connected, and between confronted side ends of the wall surfaces 2, 2 which are orthogonally adjacent, a four-corner connecting piece 3 where a diagonal folding line B for double folding is provided, is provided in a manner to stride with folding lines, and to at least one of the confronted wall surfaces 2, 2, an internal wall surface 4 to form a double wall, is connected, and at the same time, to the side end, a corner part reinforcing piece 9 is connected, and to either one of the confronted wall surfaces 2, 2, a top surface piece 11 for reinforcing and tray stacking as well, is connected, and also, an insertion piece 12 is connected to the side end, and on a top surface (a), an insertion hole for the insertion piece 12 is provided. |
