Easy opening closure, container provided with such closure,...

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 51/38 (2006.01) B65D 17/40 (2006.01)

Patent

CA 2465963

The invention relates to an easy opening closure, comprising a closure (1) having a folding rim (2) and a circumferential score line (3) having a score residual (t) over the thickness of the closure (1) in the score line, enclosing a removable central closure part (4); and a tab (5) connected to the central closure part (4), which score line (3) has a pop zone in which the tap (5) pops asection of the central closure along the score line and the pop zone comprising a pop ignition zone adjacent to the tab, in clock-wise and anti- clock-wise direction subsequent tear zones in which using the tab (5) the central closure part (4) is teared off from the closure (1) along the score line (3) and eventually looses from the closure (1), wherein the tear zones comprise each a tear ignition zone adjacent the respective pop zone, and wherein the score residual (t) in the tear ignition zones is reduced relative to the score residual in the pop ignition zone, to a container, provided with such easy opening closure and to an apparatus for producing same.

L'invention concerne une fermeture à ouverture rapide, comprenant un couvercle (1) à bord pliant (2) et une pliure circonférentielle (3) conservant, dans la pliure, un résidu de pliure (t) sur l'épaisseur du couvercle (1), entourant une partie centrale amovible de couvercle (4), et une languette (5) connectée à la partie centrale du couvercle (4), la pliure (3) comportant une zone de tirage dans laquelle la languette (5) permet de tirer une section du couvercle central le long de la pliure, la zone de tirage comprenant une zone d'amorçage de tirage adjacente à la languette, et des zones subséquentes déchirables dans les sens horaire et antihoraire dans lesquelles l'utilisation de la languette (5) provoque le déchirement de la partie centrale du couvercle (4) de la fermeture (1) le long de la pliure (3) avec, éventuellement, l'enlèvement complet de la fermeture (1), les zones de déchirement comprenant une zone d'amorçage de déchirement adjacente à la zone de tirage respective, et le résidu de pliure (t), dans la zone d'amorçage de déchirement, étant réduit par rapport au résidu de pliure dans la zone d'amorçage de tirage. L'invention concerne aussi un contenant équipé d'une telle fermeture à ouverture rapide et un appareil de production de cette fermeture.

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