Machine for making tube-shaped plastics film bags

摘要

Bag making machine in which a foil puller (17) is provided as the foil transport device (15). The puller is pivotable tangentially to the filler tube (13) about a direction running parallel to the central axis (200 of the filler tube. A device (16) to swivel the puller is provided, and takes the form of a stepper motor (25) which drives a spindle (27). The device (16) preferably has a controller (39) with an sensor (18) on a film edge detector (19). The sensor is preferably an ultra sound sensor (37), and the controller is preferably a fuzzy logic controller (40).