to reduce the radius at 54 as shown in FIGS. 1D and 1E. At the third work station, the bubble is reformed a second time with a smaller radius at its base to allow the tab to be seated closer to the panel 52, as shown in FIGS. 1F and 1G.
At the fourth station, indicated in FIGS. 1H and 1I, the shell 15 is scored 56 to define an opening in the shell and a C-bead or a D-bead 58 is formed in the center of the panel 52 to remove excess metal put into the area by the scoring process. At the fifth station, indicated in FIGS. 1J and 1K, the panel 52 is formed in the region 60, giving the end strength. Excess metal accumulated duringprovided. The system includes a source of a sheet of end material, such as aluminum or steel in coil form. The sheet of end material is supplied to a press. The press has a series of work stations that perform forming operations on the sheet of end material so as to form a complete end in the sheet material. The curling of the end can be either performed in the press or, more preferrably, in a curler machine after the end is ejected from the press. As the sheet of end material is fed through the press, the work stations work on the sheet to form the end, and, at the same time, maintain the sheet of end material in a substantially continuous and void-free state. The feature