Linerless closure for carbonated beverage container

Details Linerless closure for carbonated beverage container Linerless closure for carbonated beverage container

2004-10-04

2008-10-07

Heitbrink, Jill L (Department: 1791)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

C425S542000, C425S809000

Reexamination Certificate

active

07431877

ABSTRACT:
A plastic closure for sealing a container, the closure having a top portion and a skirt portion depending from the top portion. The closure has an annular sealing rib which extends within the cavity defined by the top portion and the skirt portion. The rib includes a first portion having a substantially cylindrical inner surface extending away from the underside of the top portion and disposed radially inward of the skirt and a second, frusto-conical, portion contiguous with the end of the first portion distal to the underside of the top portion and extending radially inwardly and terminating in a circular free edge, such that during engagement of the cap with the neck of the container, the second, frusto-conical, portion will be engaged by the free end of the neck and folded back against the first portion of the rib to form a gas-tight seal between the neck of the container and the closure.

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