Fiberboard flat with joined strengthened corners for setting up

Details Fiberboard flat with joined strengthened corners for setting up Fiberboard flat with joined strengthened corners for setting up

1985-04-19

1986-08-26

Price, William

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229108, 229 41R, 229 41C, 229110, 229109, B65D 536

Patent

active

046077855

ABSTRACT:
A flat of fiberboard in knocked-down form for setting up into a tray which has strengthened corners. The flat consists of laminated strength-producing connecting corner tabs between hinged side-wall forming flaps. The tabs are formed on the ends of the flaps and some of the flaps are provided with angular fold lines which provide foldable sections in these flaps, the fold lines extending from the flap hinge lines of the respective flaps to a point within the flaps and a slit being provided from that point in each flap to the outer edge of the flap to permit folding of the foldable flap sections.

REFERENCES:
patent: 686808 (1901-11-01), Hirsch
patent: 899654 (1908-09-01), Bloomer
patent: 1102877 (1914-07-01), Clark
patent: 1485584 (1924-03-01), Bergstein
patent: 1563907 (1925-12-01), Koff
patent: 1656307 (1928-01-01), Walter
patent: 1673109 (1928-06-01), Fenstermacher
patent: 2933232 (1960-04-01), Bugnone
patent: 3704824 (1972-12-01), Croley

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