Easy-opening high barrier plastic closure and method therefor

Details Easy-opening high barrier plastic closure and method therefor Easy-opening high barrier plastic closure and method therefor

2008-04-29

2008-04-29

Watkins, III, William P (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

C428S036600, C428S035400, C220S265000, C220S270000, C493S129000, C493S133000, C053S477000, C053S478000

Reexamination Certificate

active

07364779

ABSTRACT:
A plastic, easy-opening closure for a retortable container and a method for sealing are provided. The closure includes a plastic membrane having an outer layer of polypropylene, a first tie layer, an intermediate layer formed of EVOH, a second tie layer, an inner layer formed of polypropylene, and a peel-seal layer. The peel-seal layer can be formed of high density polyethylene or polypropylene with a contaminant dispersed therein so that the closure can be easily removed from the container for opening.

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