Apparatus for producing film tube from film strip

Abstract

The invention concerns an apparatus for producing film tube which can be filled with liquid, viscous or granular filling material, from a film strip. The apparatus comprises a filling tube which can be connected to a filling machine, a transformation device surrounding the filling tube for transforming the film strip into a film tube, a sealing device arranged downstream of the transformation device in the filling expulsion direction for sealing longitudinal edges of the film strip, an advance drive means for the film tube, and a measuring device for determining a supply amount of film tube delivered by the sealing device. The measuring device includes a first sensor which detects the length of the film tube delivered by the sealing device to the film tube supply and a second sensor which detects the length of the film tube drawn off the film tube supply.

Dependencies are inferred from the claim text.