Apparatus and method for forming inflated chambers

Details Apparatus and method for forming inflated chambers Apparatus and method for forming inflated chambers

B - Operations, Transporting

29

C

B29C 65/18 (2006.01) B29D 22/02 (2006.01) B65D 81/03 (2006.01)

Patent

CA 2446782

An inflatable web (10), and method and apparatus for inflating the web, which generally includes two sheets (12, 14) having inner surfaces sealed to each other in a pattern defining a series of inflatable chambers (16) of predetermined length, each of the chambers having at least one change in width over their length; and inflation port located at a proximal end of each chamber, the inflation ports being formed by intermittent seals between the sheets; and longitudinal flanges formed by a portion of each of the sheets that extend beyond the inflation ports and intermittent seals. Apparatus (34) includes a conveying mechanism (36), an inflatio n nozzle (38), and a sealing device (40).

L'invention porte sur une bande gonflable (10), et sur un procédé et un appareil permettant de gonfler cette bande, qui comprend généralement deux feuilles (12, 14) dont les surfaces internes sont soudées l'une é l'autre selon une configuration formant une série de chambres gonflables (16) d'une longueur prédéterminée, chaque chambre présentant au moins une modification en largeur sur leur longueur ; un port de gonflage placé à une extrémité proximale de chaque chambre, ces ports de gonflage étant formés par des joints hermétiques intermittents ente les feuilles ; et des rebords longitudinaux formés par une partie de chacune des feuilles qui s'étendent le long des ports e gonflage et des joints hermétiques intermittents. L'appareil (34) comprend un mécanisme de transport (36), une buse de gonflage (38) et un dispositif d'étanchéité (40).

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