CAN END

摘要

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.