| 摘要 |
The machine for making plastic sacks by welding and perforating a sleeve (BA) consists of a frame (1) with working posts (2, 3, 4), drums (5, 6, 8, 9, 11, 12) and return rollers (7, 10), with the working posts made easily removable for maintenance. It has a transmission system (TM) that gives each drum a peripheral velocity lower than the preceding one, so that at the moment of welding there is no tension on the plastic sleeve, while the length of the sacks is varied by adjusting the position of the return rollers. |
