Envelopes – wrappers – and paperboard boxes – Paperboard box – End structure
Patent
1978-07-12
1980-02-26
Moorhead, Davis T.
Envelopes, wrappers, and paperboard boxes
Paperboard box
End structure
B65D 304, B65D 504
Patent
active
041901878
ABSTRACT:
The invention provides a tubular container whose wall at at least one end is curled over to form a bead for engagement with a closure, the said curled over end portion of the container wall being of thinner gauge than the adjacent wall portion. The container can have a foil diaphragm secured across the beaded end, and may have a reusable overcap or lid engaging around the bead and closing the beaded end of the container. The beaded end of containers according to the invention is more durable than that of prior constructions, and can provide a better seat for a sealing diaphragm.
REFERENCES:
patent: 1649569 (1927-11-01), Carle
patent: 1711642 (1929-05-01), Hulbert
patent: 1787332 (1930-12-01), Wright
patent: 2314338 (1943-03-01), Graves et al.
patent: 3406891 (1968-10-01), Buchner et al.
Moorhead Davis T.
Rolex Paper Company Ltd.
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