Pull tab position fixing process for can lid involves shaping projection at least twice, to remove pre-form and to post-form front edge

摘要

The pull tab position fixing process involves shaping a projection (20) at least twice, first to remove a pre-form of the projection from the can lid, and then to post-form at least one front edge of the projection. Notched lines are not applied. The blocking of the exterior edge section associated with the post-formed front edge is improved.