Plastic container closure

Details Plastic container closure Plastic container closure

1981-06-26

1982-11-30

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220254, 220339, 220307, 222153, 222541, B65D 4132

Patent

active

043612504

ABSTRACT:
The hinged flap of a plastic container closure is molded while in an open position and, during molding of the flap, hinged strips with depending pins are formed along the sides of the flap and are integrally connected with the flap by tearable webs. After the flap has first been closed, the pins are anchored to the top of the closure and prevent the flap from opening during shipment of the container. Initial opening of the flap is effected by swinging the flap upwardly with a substantial force to tear the webs and separate the webs from the strips and the anchor pins, the torn webs providing a visual indication that the flap has been opened.

REFERENCES:
patent: 3095995 (1963-07-01), Foster
patent: 3251509 (1966-05-01), Foster
patent: 3255928 (1966-06-01), Foster
patent: 3370757 (1968-02-01), Foster
patent: 3675812 (1972-07-01), Foster
patent: 3872996 (1975-03-01), Dogliotti
patent: 4059201 (1977-11-01), Foster
patent: 4106672 (1978-08-01), Tecco et al.

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