Closure structure for containers

Details Closure structure for containers Closure structure for containers

1978-08-04

1979-03-20

Hall, George T.

Envelopes, wrappers, and paperboard boxes

Paperboard box

End structure

220276, 220277, B65D 310, B65D 500, B65D 4132

Patent

active

041449940

ABSTRACT:
A closure structure for a container having end closures, one of the end closures being arranged to facilitate opening by a conventional type cutter, the closure being characterized by a diaphragm having an annular area therein with a thickness less than the thickness of the closure material, so that the annular area may be readily pierced and severed.

REFERENCES:
patent: 2119533 (1938-06-01), Fink
patent: 3322318 (1967-05-01), Felton, Jr. et al.
patent: 3851793 (1974-12-01), Brown

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