Edge protection for easy opening end closure

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

1976-08-09

1977-08-09

Hall, George T.

Receptacles

Closures

With closure opening arrangements for means

220 906, B65D 4132

Patent

active

040405400

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: 3825149 (1974-07-01), Brown et al.
patent: 3986632 (1976-10-01), Morrison et al.

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