Carton closing and sealing apparatus

Details Carton closing and sealing apparatus Carton closing and sealing apparatus

1976-08-23

1977-12-20

McGehee, Travis S.

Package making

Closing packages and filled receptacles

Including provision for pleat of cover overhang

53373, B65B 5110

Patent

active

040634035

ABSTRACT:
Apparatus for automatically closing cartons having self-sealing reclosable top closures adapted, when closed, to lie within the confines of the carton bodies, the end closures having opposing pairs of sealing flaps adapted to be juxtaposed in face-to-face contacting relation, preferably with the mouths of carton liners interposed therebetween, the juxtaposed sealing flaps and liner mouths being displaceable downwardly to close the cartons and thereafter displaceable upwardly to reopen the cartons, the apparatus comprising a series of continuously moving carriages which receive and advance the openended cartons in a path of travel, the cartons being first acted upon by sets of folding fingers which concurrently infold the leading and trailing end closure flaps and the projecting ends of the liners, whereupon sweep means act to juxtapose the opposing pairs of sealing flaps with the liners interposed therebetween. If desired, heat sealing means may be provided to seal together the juxtaposed portions of the liners lying between the sealing flaps; and if the sealing flaps are provided with foldable extensions, additional sweep means are provided to infold the extensions. Thereafter the closed but extended sealing flaps are sequentially engaged by tucking heads mounted on a rotatable turret, the tucking heads engaging and displacing the extended sealing flaps downwardly within the carton bodies to complete the formation of the end closures.

REFERENCES:
patent: 1998287 (1935-04-01), Pierson et al.
patent: 2443293 (1948-06-01), Bergstein et al.
patent: 2585335 (1952-02-01), McHale et al.
patent: 2669815 (1954-02-01), Zinn, Jr. et al.
patent: 2979995 (1961-04-01), Bergstein et al.
patent: 3241291 (1966-03-01), Monroe et al.
patent: 3405505 (1968-10-01), Mistarz
patent: 3451194 (1969-06-01), Nerenberg et al.
patent: 3483803 (1969-12-01), Back et al.
patent: 3919828 (1975-11-01), Zellman

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