Container seam

Details Container seam Container seam

1980-03-28

1981-10-06

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Paperboard box

End structure

220 67, B65D 634, B65D 310

Patent

active

042930901

ABSTRACT:
A container seam includes an additional vertical section of metal and a corrugated outer surface for providing sufficient vertical seam strength to resist the crushing force exerted by an opener drive gear. An end member is provided with an overhang having a segment thereof folded back parallel upon another segment of the overhang. After a seaming process, the folded segments are vertically oriented and provide increased vertical strength. During said seaming process, the outside part of the seam is provided with vertical corrugations to further increase vertical strength.

REFERENCES:
patent: 2237809 (1941-04-01), Bronson
patent: 2362846 (1944-11-01), O'Brien
patent: 2382378 (1945-08-01), Bloedorn
patent: 3367533 (1968-02-01), Baker
patent: 3376997 (1968-04-01), Kutka
patent: 3952677 (1976-04-01), Hartman et al.

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