Process and apparatus for making a plastic bag with a zipper

B - Operations – Transporting – 31 – B

Patent

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Details

B31B 1/90 (2006.01) A44B 19/26 (2006.01) A44B 19/62 (2006.01) B31B 19/90 (2006.01) B65D 33/24 (2006.01) B65D 33/25 (2006.01)

Patent

CA 2195183

In a continuous bag-making process, the film (12, 13) and zipper track (10) move intermittently through a bag machine in a continuous stream, so there is no end to the zipper track on which the slider can be inserted. In the present invention, in the intermittent motion-part of the bag machine, the zipper is cut apart at the location that is to be the edge of the bag, the ends formed by the cutter moved laterally relative to each other exposing the ends and the slide (11) is inserted over one of the exposed ends.

Dans un procédé de fabrication de sacs en continu, le film (12, 13) et la glissière (10) de la fermeture se déplacent par intermittence dans une machine de fabrication de sacs dans un flux continu, de sorte que la glissière ne présente aucune extrémité sur laquelle le curseur puisse être inséré. Dans la présente invention, dans la partie mouvement intermittent de la machine de fabrication de sacs, la fermeture est découpée en deux parties au niveau de l'emplacement destiné à constituer le bord du sac, les extrémités formées par la lame étant déplacées latéralement l'une par rapport à l'autre afin d'être dégagées et de permettre l'insertion du curseur (11) sur l'une d'elles.

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