| 摘要 |
A machine (30) is described for packaging products in a plastic film, comprising at least one longitudinal cutting and welding bar (31) actuated in its up-and-down movement by at least one first piston (34), supported by a first supporting structure (37) of such packaging machine (30); at least one transverse cutting and welding bar (33) independent from the longitudinal cutting and welding bar (31) and actuated in its up-and-down movement by at least one second piston (35) supported by a second supporting structure (39) of such packaging machine (30); and controlling and managing means adapted to control and program the operation of at least the first and the second piston (34, 35). |
