Container folding machine and product thereof

Details Container folding machine and product thereof Container folding machine and product thereof

1996-12-21

1999-06-08

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paper or paperboard cup

Including closure

229 55, 229400, B65D 310

Patent

active

059098422

ABSTRACT:
A machine for container formation by folding a die-scored paperboard structure to close flaps shaped by the scoring that serve as the top and bottom of the container. A scored paperboard sheet is loaded onto a male pedestal inner pattern such that the foldable top and bottom container portions extend beyond the pattern, whereupon armature driven semicircular outer patterns, having upper and lower fingers adapted to be driven by corresponding fluid driven pin stabilizers, close upon the sheet. While closed over the sheet, the pins are activated to move the fingers inward on the inner pattern and force fold the container along the score lines, followed by automatic retraction of the pins and outer patterns. The container is thus pre-folded in preparation for shipping as a flat paper form that is ready for folding on the crease lines thus formed. One or both flaps of the container can be folded along the crease lines to form a closure at one or both ends. When folded, the flap forms a plurality of inwardly directed pyramidal segments that are crimped along the container axis to form the closure.

REFERENCES:
patent: 648448 (1900-05-01), Wagnitz
patent: 3272418 (1966-09-01), Morse et al.
patent: 3713576 (1973-01-01), Goebel
patent: 3977594 (1976-08-01), Swan
patent: 4208954 (1980-06-01), Chase
patent: 4712725 (1987-12-01), Moore
patent: 5558272 (1996-09-01), Magister

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