Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1985-12-20
1988-03-15
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
229 31, 229 48T, 229106, 229 45, 493129, 493134, 493157, 493165, 493184, B65D 508
Patent
active
047307668
ABSTRACT:
This relates to a carton or cup having a conventional type of gable end which includes sealing flaps which are heat sealed or bonded to one another. The cup is particularly adapted to be closed by hand wherein control over the sealing flap positions is not possible as in the case of machine closed cups. Accordingly, the intermediate folded sealing flaps are so configurated wherein the folded ends thereof will be spaced so as to define therebetween a leak path. One of the front and rear sealing flaps will be provided with a bead of hot melt material which will be aligned with the leak path and when the sealing flaps are heat bonded together, the hot melt material will melt and fill the leak path.
REFERENCES:
patent: 1974256 (1934-09-01), Bergstein
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patent: 3389849 (1968-06-01), Egleston
patent: 3421678 (1969-01-01), Thompson et al.
patent: 3913825 (1975-10-01), Brownlee et al.
patent: 3913826 (1975-10-01), Brownlee et al.
patent: 3944126 (1976-03-01), Richards
patent: 4442970 (1984-04-01), Farber
patent: 4603535 (1986-08-01), Schultheis
Brown Charles E.
Continental Bondware, Inc.
Elkins Gary E.
Marcus Stephen
LandOfFree
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