Patent ID: 6922971
Filing Date: 2005-08-02
Classification: B29C,B31B,B65B

Abstract:
1. A form-fill-seal machine comprising means for moving a web of packaging material through the machine according to a process path and means for transforming the web into filled bags, furthermore comprising a zipper strip applicator device for applying, in particular by pre-sealing, of a zipper strip onto the web, said zipper strip applicator device having means for supplying a zipper strip for each bag transverse to the process path, which supply means comprise at least one conveyor, which is provided with means for retaining or engaging the zipper strip during supply, wherein the conveyor is provided with driving means, the machine further comprising control means having edge noticing means for noticing the position of a longitudinal edge of the web with respect to a fixed reference in the machine, and means for controlling the driving means for the zipper strip conveyor transverse to the web in response to the data from the noticing means.