Opening devices for foil closures

Details Opening devices for foil closures Opening devices for foil closures

B - Operations, Transporting

65

D

B65D 51/20 (2006.01) B65D 47/10 (2006.01)

Patent

CA 2535436

Disclosed is an opening device for a foil closure can be fitted to a container body. The device comprises a spout (4) with a removable disc (10) attached to a pull-ring (12). The disc (10) is secured to the spout (4) by means of a frangible region (30). A foil (8) is sealed to a raised land (34) on a base of the disc (10). The pull ring is mounted to the disc (10) by means of legs so that it applies a force on a peninsula (50) of the disc, thereby reducing the length of the arc over which an initial pulling force is dissipated when the initial tear is being initiated reducing the force required to tear the foil (8) by up to 40%.

L'invention concerne un dispositif d'ouverture destiné à un système de fermeture à opercule et pouvant être fixé à un corps de contenant. Ce système de fermeture comprend un bec (4) pourvu d'un disque amovible (10) fixé à un anneau d'ouverture (12). Le disque (10) est fixé au bec (4) au moyen d'une zone destinée à la rupture (30). Un opercule (8) est scellé à une partie saillante (34) située sur une base du disque (10). L'anneau d'ouverture est monté sur le disque (10) au moyen de pattes de façon à appliquer une force sur une partie du disque formant une péninsule (50), ce qui réduit la longueur de l'arc sur lequel une force de traction initiale est répartie lors de l'amorçage de la rupture initiale, la force requise pour la rupture de l'opercule (8) étant ainsi réduite d'une valeur pouvant atteindre 40 %.

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