Method of making a closure seal for a container

Details Method of making a closure seal for a container Method of making a closure seal for a container

2008-09-02

2008-09-02

Crispino, Richard (Department: 1791)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S221000, C156S227000

Reexamination Certificate

active

11281114

ABSTRACT:
A seal for a container opening includes a seal layer for connecting to and covering an opening of the container. A pull-tab forming layer is bonded to the seal layer. The pull-tab forming layer has a heat resistant surface joined to the seal layer, and a hinge disposed near the center of the seal. A portion of the pull-tab forming layer defines a pair of opposed pull-tabs extending from the hinge, in which the heat resistant surface covers a top surface of each of the pull-tabs, a surface of the pull-tabs opposite the top surface, and a portion of the pull-tab forming layer facing the surface of the pull-tabs opposite the top surface. A method of forming the seal and a material blank for forming a plurality of the seals are also described.

REFERENCES:
patent: 4000838 (1977-01-01), Bogert
patent: 5433982 (1995-07-01), Yamada et al.
patent: 5702015 (1997-12-01), Giles et al.
patent: 6461714 (2002-10-01), Giles
patent: WO 97/02991 (1997-01-01), None

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