Joseph M. Giles - Secor IL Steven A. Brucker - Gibson City IL William J. Bennington - Normal IL
Assignee:
Selig Sealing Products, Inc. - Forrest IL
International Classification:
B65D 5304 B65D 5306
US Classification:
215347
Abstract:
An innerseal is provided for sealing against the lip of a container opening under a cap. The innerseal includes a resiliently-compressible porous synthetic backing layer which fits within the cap, a foil layer, and a wax layer which initially holds the foil and backing layers together. Preferably, a heat-activatable adhesive layer is disposed against the foil layer. The cap is tightened so that the foil layer is pressed against the lip of the container opening. Then, heat is applied to melt the wax and to activate the adhesive layer. This molten wax is absorbed into the synthetic backing layer so that the backing layer and foil layer are separatable by a twisting of the cap. The synthetic backing layer provides improved strength and liquid resistance characteristics over pulpboard type seals, and is cuttable with less dust.
Joseph M. Giles - Secor IL William Bennington - Normal IL Steven Brucker - Gibson City IL
Assignee:
Selig Sealing Products, Inc. - Forrest IL
International Classification:
B65D 4302
US Classification:
215232
Abstract:
A seal for a container is provided with a method of manufacturing the same. The seal has a unitary pull-tab portion having with a pull-tab formed therein. A layer of polyester film preferably is secured to the unitary member over the pull-tab. A foil seal portion preferably is secured to the pull-tab portion and constructed for securing around the opening of the container. The pull-tab portion preferably is formed of a first layer of a plastic material fused to a second layer of the plastic material by extruding the one onto the other with a release layer therebetween such that an unfused portion of the first layer forms the pull-tab.