Method for making an easy opening end closure for a container

Details Method for making an easy opening end closure for a container Method for making an easy opening end closure for a container

1975-12-23

1977-01-25

Gilden, Leon

Receptacles

Compartmented container

Compartment partition is movable or removable

113121A, 220270, 220359, B21D 5144

Patent

active

040045307

ABSTRACT:
The easy opening end closure for attachment to a can body. The end closure includes a plastic pull tab having a closure tab sealed in a slit which defines a displaceable closure.
The pull tab is attached by forging a plastic strip over a lid in a manner such that the plastic is caused to flow and force the metal panel against a cutting edge to form a slit defining a displaceable closure. At the same time the forged plastic flows beneath the adjacent edges of the slit to form a tight seal therein.

REFERENCES:
patent: 3160325 (1964-12-01), Stull
patent: 3184096 (1965-05-01), Cheeley
patent: 3302824 (1967-02-01), Cheeley
patent: 3473692 (1969-10-01), Moller
patent: 3625392 (1971-12-01), Kaminski
patent: 3884382 (1975-05-01), Ball

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