Tamper evident closure

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 55/02 (2006.01) A47J 36/28 (2006.01) B65D 25/08 (2006.01) F25D 5/02 (2006.01) F25D 31/00 (2006.01)

Patent

CA 2362323

A beverage container (10) has a base member (16) indented to define an elongate external cavity (20). To provide a self-heating can, the cavity (20) is filled with quicklime and closed by a closure (30) which contains water. If the closure (30) is opened with the can inverted, water flows over the quicklime to cause an exothermic reaction. To provide evidence that the closure (30) has been operated to cause self-heating, the internal surface of a lid (34) is coloured and/or provided with a bold pattern. The material of part of the closure (30) is transparent and the contained water is coloured. For example, the water is red and the surface of the lid (34) is blue. In the initial full and unoperated state, the closure will appear red. After operation, during which the water exits, the closure will appear blue. The fact that the closure has been operated is immediately visually apparent.

Selon cette invention, un récipient pour boissons (10) comprend un élément de base à enfoncements (16) qui délimite une cavité externe allongée (20). Afin d'obtenir une boîte boissons autochauffante on remplit la cavité avec de la chaux vive et on l'obture avec un couvercle (30) qui contient de l'eau. Si l'on ouvre le couvercle (30) en renversant la boîte boissons, l'eau submerge la chaux vive et provoque une réaction exothermique. Afin que l'on puisse prouver que le couvercle (30) a été actionné afin de provoquer l'autochauffage, la surface interne d'un capuchon (34) a été colorée ou recouverte d'un motif bien visible. Le matériau d'une partie du couvercle (30) est transparent, et l'eau utilisée est de couleur; par exemple, l'eau peut être rouge et la surface du couvercle (34) bleue. A l'état initial, si le récipient est plein et n'a pas été actionné, le couvercle sera de couleur rouge. Après le fonctionnement, pendant lequel l'eau s'écoule en sortant, le couvercle sera bleu. Ainsi, on peut immédiatement voir si le couvercle a été utilisé.

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