Container closure

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 25/40 (2006.01) B65D 5/72 (2006.01) B65D 35/38 (2006.01)

Patent

CA 2598097

A one-piece container closure with a collar, stiff planar triangular leaflets attached by linear hinges to the collar, and thin flexible foldable webs attached to and extending between the leaflets. The leaflets are flat with the webs folded beneath in closed closure position. The leaflets are pivoted upwardly with webs unfolded therebetween in open position. An integral cap is attached to the collar by a snap-action bow-tie hinge. A central pin on the cap seals with the leaflets when the cap is closed. The closure is integrally molded in open position with raised leaflets and unfolded webs, leaflets then being lowered and the webs folded to closed position while the closure is still warm, the cap then being closed, and the closed closure then being annealed to establish the elastic positional memory of the leaflets and hinges in the closed position when product is not being dispensed through the closure.

L'invention concerne un dispositif de fermeture de récipient formé d'un corps cylindrique, d'éléments triangulaires rigides plats rattachés par des charnières linéaires au corps cylindrique, et des bandes repliables minces et flexibles rattachées auxdits éléments et s'étendant entre ceux-ci. Lesdits éléments sont plats et lesdites bandes pliées en dessous en position fermée. Les éléments pivotent vers le haut et les bandes sont dépliées entre ceux-ci en position ouverte. Un bouchon intégré est fixé au corps cylindrique par une charnière papillon à déclic. Un élément central du bouchon, associé auxdits éléments, garantit une fermeture hermétique lorsque le bouchon est fermé. Le dispositif de fermeture est intégralement moulé en position ouverte, les éléments déployés et les bandes dépliées. Les éléments sont abaissés et les bandes pliées en position fermée tandis que dispositif de fermeture est encore chaud. Le bouchon est alors fermé et le dispositif de fermeture fermé est alors recuit afin de maintenir la mémoire de position élastique des éléments et des charnières en position fermée lorsque le produit n'est pas distribué par le dispositif de fermeture.

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