Sheet material formed with a partial depth cut in the form...

B - Operations – Transporting – 31 – B

Patent

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Details

B31B 1/84 (2006.01) B31B 1/25 (2006.01) B65B 61/18 (2006.01) B65D 5/74 (2006.01)

Patent

CA 2570387

A top closure obturating panel (2) of a carton is formed with a partial depth cut (4) in the form of an open loop of which one end (4a) is at a greater distance from a central zone of the loop (4) than is the other end (4b). Following filling and top-sealing of the carton, there is applied to the panel (2) a pour spout fitment consisting of a flanged pour spout, a screw cap on the pour spout, and a plunger co-operating with the screw cap and the pour spout in such manner that, upon unscrewing of the screw cap, the plunger screws inwards. At its inner end, the plunger is formed with arcuate pushing blades (6), which thereby cause the laminate material of the panel (2) to fracture along the partial depth cut (4) such that an encircling portion (2a) of the panel (2) and an encircled portion (2b) within the loop (4) separate from each other along the loop (4), but remain interconnected by way of an intermediate portion (2c) extending through between the ends (4a) and (4b) of the loop (4).

L'invention concerne un panneau (2) d'obturation du haut d'une boîte en carton, muni d'une découpe de profondeur partielle (4) en forme de boucle ouverte, dont une extrémité (4a) est plus éloignée d'une zone centrale de la boucle (4) que l'autre extrémité (4b). Après remplissage et fermeture du haut du carton, le panneau (2) est équipé d'une cloison de versement constituée d'un bec verseur à bride, d'une capsule filetée placée sur le bec verseur, et d'un poussoir coopérant avec la capsule filetée et le bec verseur de façon à visser vers l'intérieur lorsque la capsule filetée est dévissée. A son extrémité intérieure, le poussoir est formé de lames de poussée arquées (6), qui provoquent la rupture du matériau stratifié du panneau (2) le long de la découpe de profondeur partielle (4), si bien qu'une partie périphérique (2a) du panneau (2) et une partie encerclée (2b) de la boucle (4) se détachent l'une de l'autre le long de la boucle (4), sauf sur une partie intermédiaire (2c) qui s'étend entre les extrémités (4a et 4b) de la boucle (4).

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