Flanged tray with gusset corners

Details Flanged tray with gusset corners Flanged tray with gusset corners

1980-03-28

1981-12-08

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229 26, B65D 524, B65D 522

Patent

active

043043526

ABSTRACT:
A tray having side wals and a bottom wall is provided with leakproof gusset corners including overlapping gusset panels connected by a center fold line. Side fiold lines connect the respective gusset panels to the side walls with sealing portions of the gusset panels extending the full depth of the side walls for full depth leakproofness of the tray. A cut-out in the inner gusset panel allows bonding of the outer gusset panel against the side wall strengthening the corner of the tray and assuring the sealing action. The cut-out in the inner gusset panel is particularly shaped to form the sealing portion and to allow maximum bonding of the outer gusset panel. A peripheral flange is formed of flange sections having alternate extensions with abutting edges to provide an equal width flange around each corner and the full periphery of the tray. During folding, the flange extension cooperates with a rounded corner of the sealing portion of the inner gusset panel to assure smooth and efficient folding action.

REFERENCES:
patent: 717775 (1903-01-01), Single
patent: 1959613 (1934-05-01), Carson
patent: 2071949 (1937-02-01), Reich
patent: 2823847 (1958-02-01), Barnes et al.
patent: 2846132 (1958-08-01), Carpenter
patent: 3054550 (1962-09-01), Comstock
patent: 3386644 (1968-06-01), Zackheim
patent: 3917155 (1975-11-01), Bemiss
patent: 4114797 (1978-09-01), Manizza

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