Device and method for making packaging bags

B - Operations – Transporting – 31 – B

Patent

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B31B 19/90 (2006.01) B31B 19/74 (2006.01) B65B 9/20 (2006.01)

Patent

CA 2341604

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.

La présente invention concerne un dispositif de formation de sachets à l'aide d'un film à défilement continu équipé d'au moins une bande (60) à fonction d'ouverture/fermeture disposée sur le film (12), caractérisé par le fait qu'il comprend au moins un capteur (100) apte à détecter la présence de la bande (60) à fonction d'ouverture/fermeture dans une position relative prédéterminée par rapport aux moyens (30) de traitement cyclique du film pour la formation du sachet, notamment par rapport aux moyens (30) de fixation transversale du film composant le sachet, prévus sur le dispositif.

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