| 摘要 |
603260 A method and a device for manufacturing a continuous bag-like package blank (24) is disclosed. The blank is produced by a plane plastic sheet (18) being unwound from a storage reel (19), the sheet being conveyed through an edge thickening equipment (1) and further to a folding device, to a welding device and to a slotting tool to obtain a continuous bag-like package blank (24). The edge thickening equipment (1) comprises a process bed (17) over which the sheet (18) is conveyed, and an extruder device (12, 13) having a first (15) and second (16) extruder nozzle (15) placed over the sheet (18). Each nozzle continuously extrudes a material bead (28) that is permanently attached to each edge (26, 27) of the sheet. The relative position of each nozzle with respect to themselves and the sheet can be altered. |
