Envelopes – wrappers – and paperboard boxes – Paperboard box – Having means to facilitate opening the box by severing box...
Patent
1990-12-07
1992-02-11
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Having means to facilitate opening the box by severing box...
229137, B65D 574
Patent
active
050869280
ABSTRACT:
There is disclosed herein a flat top end closure for a liquid carrying container, which includes two oppositely disposed, overlapped outer closure panels, and two oppositely disposed, three-segment fold-in panels, one of which serves as the pour spout when opened. Each of the three-segment fold-in panels includes a substantially triangular panel portion defined by converging diagonal score lines extending from the upper edge of the tubular container body, and a pair of fold-back panels integrally connected to and folded between the substantially triangular panel portion and the respective adjacent outer closure panels. Diagonal opening-assist score lines are formed on the outer closure panels at a lesser angle with respect to horizontal than the angle of the respective underlying converging diagonal score lines. Alternatively, the diagonal opening-assist score lines are formed in a parallel relationship with the respective underlying converging diagonal score lines.
REFERENCES:
patent: 3269644 (1966-08-01), Bump
patent: 4211357 (1980-07-01), Lisiecki
patent: 4422570 (1983-12-01), Lisiecki
patent: 4582246 (1986-04-01), Lisiecki
patent: 4911306 (1990-03-01), Lisiecki et al.
Elopak Systems A.G.
Marcus Stephen
McDonald Christopher
Moran John P.
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