Bagging machines and bags made thereby

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 43/06 (2006.01) B65B 9/00 (2006.01) B65D 30/02 (2006.01) B65D 30/10 (2006.01) B65D 33/00 (2006.01)

Patent

CA 2576203

The specification discloses bag making apparatus for making a tube from plastics material web material and for making bags therefrom, the apparatus (10) including a support frame (11) defining a desired internal area of the tube formed thereon, first plastics material film web dispensing means (26, 27, 28, 29) for dispensing first film webs (30) in a longitudinal direction relative to the support frame (11) such that the film webs (30) overlap and adhere to one another, a second plastics material film web dispensing means (31) for laying at least one further film web (32) in overlapping spirals over the longitudinally extending first film webs (30), and a third plastics material film web dispensing means (34, 35, 36, 37) for dispensing third film webs (38) in a longitudinal direction relative to the support frame (11) over the overlapping spiral web material (32), the apparatus further including movement conveyor means (15) extending longitudinally of the support frame (11) to enable the tube formed thereon to be moved to a discharge region and transverse tube sealing means (21) and associated transverse tube separation means (23).

La spécification décrit un appareil de fabrication de sacs pour faire un tube en matière plastique en bande continue et pour faire des sacs à partir de celui-ci, l~appareil (10) comprenant un cadre support (11) définissant une surface interne désirée du tube s~y étant formé, un moyen de distribution d~un premier film en matière plastique en bande continue (26, 27, 28, 29) pour distribuer des bandes continues du premier film (30) dans un sens longitudinal par rapport au cadre support (11) de telle sorte que les films en bande continue (30) se recouvrent et adhèrent l~un à l~autre, un moyen de distribution d~un deuxième film en matière plastique en bande continue (31) pour déposer au moins une bande continue de film (32) en spirales se chevauchant sur les premières bandes continues de film s~étendant longitudinalement (30), et un moyen de distribuer un troisième film en matière plastique en bande continue (34, 35, 36, 37) pour distribuer des bandes continues du troisième film (38) dans un sens longitudinal par rapport au cadre support (11) par dessus le matériau de la bande continue en spirales se chevauchant (32), l~appareil comprenant également un moyen de convoyeur en mouvement (15) s~étendant longitudinalement par rapport au cadre support (11) pour permettre au tube s~y étant formé d~être transporté dans une région de décharge et un moyen de sceller le tube transversalement (21) et un moyen associé de séparation transversale du tube (23).

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