Can end

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 17/00 (2006.01)

Patent

CA 2586079

A can end having a countersink bead (35), an inclined chuck wall (38) and a strong seam, resists distortion from its circular profile when subjected to thermal processing or when packaging carbonated beverages. The can end of the invention has control features introduced which control the failure mode whilst maintaining specified buckle pressure performance. In one embodiment, the can end has a two part wall (42, 44) and a control feature that comprises expansion (50) of the countersink bead to act as a trigger for local peaking, together with a groove in the chuck wall which prevents the peaking force from being concentrated at a single point which could result in leaking by the production of a pin hole.

La présente invention concerne une extrémité de canette comportant un bourrelet conique (35), une paroi de retenue inclinée (38) ainsi qu~un serti robuste, qui résiste aux distorsions depuis son profil circulaire lors du traitement thermique ou lors du conditionnement de boissons gazeuses. L~extrémité de canette de l~invention comporte des caractéristiques de contrôle introduites qui contrôlent le mode de rupture tout en maintenant des performances spécifiées de pression de flambage. Dans un mode de réalisation, l~extrémité de canette comporte une paroi à deux parties (42, 44) et une caractéristique de contrôle qui comprend l~extension (50) du bourrelet conique pour servir de déclenchement pour une concentration locale, conjointement avec une rainure dans la paroi de retenue qui empêche la force de concentration d~être concentrée en un point unique qui pourrait entraîner des fuites dues à l~apparition d~une piqûre.

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