초록 ▼

A metallic closure for a cylindrical, rectangular or square container comprising a central panel which has a portion thereof adapted for attaching the closure to the end of a container to close the end. The panel has an opening therein and the portion of the metal adjacent the opening is rolled so t

A metallic closure for a cylindrical, rectangular or square container comprising a central panel which has a portion thereof adapted for attaching the closure to the end of a container to close the end. The panel has an opening therein and the portion of the metal adjacent the opening is rolled so that the end thereof engages under the inner surface of the panel in a smooth roll such that the free edge is not directly exposed to the contents in the container on which the closure is placed. A composite panel including a layer of plastic is bonded to the central panel and the outer surface of the central panel by heat fusion of plastic. The composite panel includes a tab that is formed integrally thereof and initially is folded back upon itself bringing the surfaces of the tab which bear the plastic into contact so that the two portions of the tab are bonded to one another to provide a double strength tab.

대표청구항 ▼

1. A metallic closure for a container comprising a central panel, means forming a part of the panel for attaching the closure to the end of a container to close the end, said panel having an opening therein, the portion of the metal adjacent the opening being rolled so that the end thereof eng

1. A metallic closure for a container comprising a central panel, means forming a part of the panel for attaching the closure to the end of a container to close the end, said panel having an opening therein, the portion of the metal adjacent the opening being rolled so that the end thereof engages under the inner surface of the panel in a smooth roll such that the free edge is not directly exposed to the contents in the container on which the closure is placed, and a composite panel having a layer of plastic bonded to the central panel on the inner surface of the central panel, said composite panel including an integral radially extending tab for grasping the foil to remove it from the remainder of the closure, said tab comprising a first portion and a second portion having the layer of plastic thereon, said first and second portions being folded over one another with the plastic layers engaging and fusing to form a double layer tab. 2. The closure set forth in claim 1 wherein said tab is normally folded over the outer surface of the composite panel. 3. The closure set forth in claim 1 wherein said composite panel comprises a metal foil on one side of which said plastic layer is formed and a layer of paper on the other side of said metal foil.