Polymer lined sealing member for a container

Details Polymer lined sealing member for a container Polymer lined sealing member for a container

2007-05-15

2007-05-15

Vo, Hai (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S343000, C428S352000, C428S346000, C428S461000, C428S462000, C428S319300, C251S232000

Reexamination Certificate

active

11026991

ABSTRACT:
A seal and method of manufacture is provided for sealing containers such as bottles, jars and the like. The seal (closure) can be formed with a lower sheetlike structure having a foam layer thereon. The lower structure can include foil and have a polymer layer, such as a PET layer thereunder A sealant layer can be provided under the bottom surface of the PET layer to bond the seal to a container opening. The polymer foam is advantageously polyethylene foam. Seals in accordance with preferred embodiments of the invention also include a top portion, which can be only partially bonded (directly or indirectly) to the bottom portion, so as to leave a tab portion extended therefrom. The top portion is advantageously bonded from periphery to periphery of the bottom portion and at or slightly offset from the diameter (middle) of the bottom portion. The top portion is advantageously formed with polymer material, such as an ethylene vinyl acetate (EVA) layer, having a layer of PET bonded on the top thereof. A release strip, which can have a release layer coated on the bottom thereof can be adhered to the top or bottom structures and used to prevent the tab from adhering to the lower structure.

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