Envelopes – wrappers – and paperboard boxes – Paperboard box – Tamper indicating
Patent
1987-04-10
1988-05-24
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Tamper indicating
206807, 22912537, 229136, 229DIG2, B65D 502
Patent
active
047460610
ABSTRACT:
A corrugated cardboard carton has opposed foldable outer flaps associated with the top and bottom ends thereof which overlap inner flaps in a conventional manner, with the opposed outer flaps being sealed together adjacent their free edges. To create a tamper-resistant seal between the outer flaps, the flaps terminate in free edges which effectively abut when the carton is closed, which free edges are defined by the inner facing layer and the intermediate corrugated layer of the board stock defining the flaps. The outer facing layer of the board stock defining the flaps is provided with a securing strip which is integral therewith and which projects outwardly beyond the free edge. This securing strip has cuts or openings therethrough. The outer facing layer of the flap also has an indicator strip, preferably of a bright color, formed on the exterior face thereof. When the opposed outer flaps are closed, the securing strip on one flap overlaps the outer facing layer of the other flap and is adhesively sealed thereto. The cuts or openings associated with the one flap are disposed directly over the indicator strip on the other flap. Any unauthorized unsealing of the strip results in the cuts or openings being visually distorted.
REFERENCES:
patent: 1845891 (1932-02-01), Schroeder
patent: 1912698 (1933-06-01), Forsman
patent: 2833404 (1958-05-01), Jacobs et al.
patent: 4516679 (1985-05-01), Simpson et al.
Package Engineering, vol. 28, #2; p. 115, 2-1983.
Elkins Gary E.
Marcus Stephen
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