PULL-TAB SECURED BY RIVETED JOINT

摘要

A container wall having a tear portion attached to a tab by a hollow rivet which is formed in the tear strip and which extends through an aperture in the tab. The sheet material around the aperture is deformed outwardly with a liberal radius of curvature to form a boss which terminates in an annular end face forming a conical seat. The end face slopes toward the can top as it extends radially inwardly. The hollow rivet is expanded in a manner to form the head of the rivet against the conical seat to permanently join the tab to the container wall.