| 摘要 |
PURPOSE: To produce a corrugated cardboard with a multiple structure simply by a machine. CONSTITUTION: A corrugated board 2 is doubled to the two-thirds width of a liner 1, the residual one third area of the liner 1 is formed to be a partition face 3, an A folding line 4 is formed by a trough folding line to the boundary between the partition face 3 and the corrugated board 2, a B folding line 5 is formed by a trough folding line which divides the width of the corrugated board 2 equally, the corrugated board 2 is doubled by inserting the partition face 3 into a trough made by folding, and doubled sheets are produced by a belt-feeding folding machine. |
