DEVICE AND METHOD FOR MAKING PACKAGING BAGS

摘要

The invention concerns a method for making bags using a continuously unwinding film provided with at least a strip (60) with opening/closing function arranged on the film (12). The invention is characterised in that it comprises at least a sensor (100) capable of detecting the presence of the strip (60) with opening/closing function in a predetermined position relative to the means (30) for cyclic treatment of the film for forming the bag, in particular means (30) for transversely fixing the film constituting the bag, provided on the device.