| 摘要 |
An end closure with a large, removable central panel, an opening tab, a score line about the periphery of the panel and a countersink wall about the periphery of the panel. The countersink wall is provided with an inwardly stepped shoulder along the major portion of its circumferential distance about the panel, but along the minor portion of the countersink wall, diametrically remote from the tab, no inwardly stepped shoulder is provided, resulting in a construction in the end closure which resists upward distortion, during opening of the closure, of the lower portions of the countersink wall along the minor portion thereof.
|
