Sift proof carton and method of making

Details Sift proof carton and method of making Sift proof carton and method of making

1994-07-11

1995-12-05

Shoap, Allan N.

Envelopes, wrappers, and paperboard boxes

Paperboard box

With closure for an access opening

229136, B65D 506

Patent

active

054721377

ABSTRACT:
A sift proof carton and method of folding and sealing the major and minor end flaps of a carton to provide a sift proof container wherein the method includes providing a carton having first and second inside and outside major flaps and a pair of minor flaps, and folding the minor flaps to substantially cover an open end of the carton. Opposite sides of the first inside major flap are then mitered and both the first and second major flaps are positioned in open positions with respect to the carton. The carton is then put in motion and, during such motion, an adhesive pattern is applied from a stationary adhesive nozzle member to selected areas of the second outside major flap and the minor flaps. The first inside major flap is then folded onto the minor flaps followed by the second outside major flap which provides direct sealing contact between the second outside major flap and both minor flaps as well as portions of the first inside major flap so as to provide the sift proof carton.

REFERENCES:
patent: 2996235 (1961-08-01), Turpin
patent: 3040958 (1962-06-01), Hagan
patent: 3140215 (1964-07-01), Russell
patent: 3194473 (1965-07-01), Rumberger
patent: 3286906 (1966-11-01), Rumberger
patent: 3934791 (1976-01-01), Dick et al.
patent: 4088263 (1978-05-01), Michetti
patent: 4501388 (1985-02-01), Cassidy
patent: 4530461 (1985-07-01), Adamek
patent: 4989780 (1991-02-01), Foote et al.

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