Quick-assembled folding carton with reinforced bottom that locks

Details Quick-assembled folding carton with reinforced bottom that locks Quick-assembled folding carton with reinforced bottom that locks

1990-09-17

1991-04-23

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Lifting or suspending element

22911701, 22911703, B65D 536

Patent

active

050093622

ABSTRACT:
A folding carton formed from a blank sheet of carton material comprises an improved carton bottom section having three flanges that are connected to three sides of the carton bottom section and are arranged to extend at a right angle to the carton bottom section when the carton is folded into a rectangular configuration to provide additional support against bending of the carton bottom section. The carton bottom section is arranged to be locked in position at the bottom of a rectangular configuration formed by the four side walls of the folding carton. The carton bottom section is locked in position by the three flanges engaging overhanging ledges formed by three reinforcement flaps adhered to the interiors of three of the four carton side walls, or by a pair of tabs extending from opposite sides of the carton bottom section and a flange engaging in three slots formed in three of the side walls of the folding carton. A diagonal line is scored across the carton bottom section to permit bending of the bottom section across the diagonal line to facilitate the insertion of the bottom section into the rectangular configuration formed by the four carton wall sections.

REFERENCES:
patent: 2942767 (1960-06-01), Weiss
patent: 3032252 (1962-05-01), Hill
patent: 3289914 (1966-12-01), Lange-Wiehe
patent: 3731873 (1973-05-01), Brangle, Jr.
patent: 4146149 (1979-03-01), Meyers et al.
patent: 4337887 (1982-07-01), Gerard et al.
patent: 4491267 (1985-01-01), Tisma

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