Edge protection for easy opening end closure

Details Edge protection for easy opening end closure Edge protection for easy opening end closure

1976-08-05

1977-10-25

Keenan, Michael J.

Receptacles

Compartmented container

Compartment partition is movable or removable

113 15A, 220 906, 220270, 220276, B21D 5144

Patent

active

040551342

ABSTRACT:
An easy opening end closure is formed with annular, double folded band adjacent the chuck wall. A weakening line defining a removable panel portion is formed in the center segment of the fold so that the folded edges of the single band provide smooth protective surfaces on both the ledge and the removable panel portion.
This disclosure also relates to a method for forming the above described easy-opening end closure wherein the weakening line is formed in the end panel prior to complete formation of the folded band.

REFERENCES:
patent: 3868919 (1975-03-01), Schrecker et al.
patent: 3894652 (1975-07-01), Brown
patent: 3939787 (1976-02-01), Morrison et al.
patent: 3945334 (1976-03-01), Ostrem et al.

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