DAASEENDE MED EN TRAEKKEFLIG OG FREMGANGSMAADE TIL FREMSTILLING HERAF.

摘要

This invention relates to the attachment of a pull tab to an easy opening end for cans and like receptacles by means of a novel rivet formation wherein the head of the rivet is of a thickness substantially approaching the original thickness of the material of the end. The rivet is formed in two punching steps each employing a flat headed punch.