Abstract: An improved easy-opening end structure for use with a container includes a retained tab and a captured panel which is also retained. The end structure includes a scoreline of defining a pour opening formed by fracture of the scoreline to release a downwardly dished panel formed by the scoreline. The tab is affixed to the end, other than to the dished panel and includes an opening end positioned over a bead on the panel, and a lifting end spaced from the panel. As the lifting end is raised, the portion of the scoreline between the opening end of the tab and the attachment is popped and thereafter the opening end bears against the panel as the tab is raised further to complete progressive rupture of the scoreline by essentially a class 1 lever action and to push the panel downwardly and laterally through the formed opening. The panel may be hinged or fall free into the container.

Abstract: An easy opening container wall comprising a container wall of sheet material having a line of weakness therein defining a tear portion at least partially removable from the container wall. Removal of the tear portion provides a relatively sharp edge along the tear portion. A guard is provided along the periphery of the tear portion to protect the consumer from injury. The guard is interrupted adjacent the location at which the line of score is initially ruptured to facilitate such initial rupture. The outer periphery of the guard and the score line are configured and positioned relative to each other to minimize interference by the guard during the opening operation.

Abstract: An easy opening ecology end having retained vent and pour tear strips is formed by an end wall having two lines of weaknesses. One line of weakness defines a vent opening while the other line of weakness defines a pour opening. Attached to each of the tear strips is a tab including a body member and end portions, the tab being attached to the respective tear strips by rivets. Each line of weakness terminates in a reversing curl to prevent continued complete separation of the tear strip. The lines of weakness, the reversing curves and the relative position and radii of the reversing curves cooperate to form a hinge line about which the ruptured tear strips are folded such that the tear strips are retained and folded back against the end wall.