Plastic bottle cap having foil neck seal

Details Plastic bottle cap having foil neck seal Plastic bottle cap having foil neck seal

1987-07-10

1988-04-26

Norton, Donald F.

Bottles and jars

Closures

Retained by bonding or adhesive means

215350, B65D 4148

Patent

active

047398914

ABSTRACT:
To resist tampering with the contents of containers, a plastic cap is provided with a foil liner. When the cap is seated on the container neck, the foil is caused to be sealed across the neck. To inhibit the foil from coming loose from the cap before closure a circumferential groove is formed in the inside of the skirt wall immediately below the cap top disc. The outer edge of the foil snaps into the groove but does not remain in the groove when the cap is removed for dispensing contents. A tab is formed extending out from the edge of the foil to be gripped by the consumer to remove the foil. This tab is folded over when the tab and cap are intact.

REFERENCES:
patent: 3352268 (1967-11-01), Koll
patent: 3734044 (1973-05-01), Asmus
patent: 3917100 (1975-11-01), Dukess
patent: 3961566 (1976-06-01), Westphal et al.
patent: 3974932 (1976-08-01), Faulstich
patent: 4047473 (1977-09-01), Fletcher
patent: 4109815 (1978-08-01), Collins
patent: 4155439 (1979-05-01), Fletcher et al.
patent: 4166552 (1979-09-01), Faulstich
patent: 4438857 (1984-03-01), Bullock
patent: 4484687 (1984-11-01), Bullock

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