Envelopes – wrappers – and paperboard boxes – Paperboard box – Including tearing or breaking means for opening a nonunitary...
Patent
1988-10-26
1989-12-19
Elkins, Gary
Envelopes, wrappers, and paperboard boxes
Paperboard box
Including tearing or breaking means for opening a nonunitary...
220269, 220359, 22912514, 22912515, 22912517, B65D 570, B65D 572
Patent
active
048877654
ABSTRACT:
A fluid pack made of plastics-coated paper in which the side walls (2) and/or the cover (1) are connected together by way of fold edges (9) and provided in the cover (1) is an opening device (7) having a cover strip (10) which sealingly engages over a stamped-out hole (6).
So that the opening device (7) can be produced in an operationally reliable and economic fashion even in a high-capacity machine, the cover strip (10) is injected plastics material and the edge regions (13) thereof cover over the edge portions (14) of the stamped-out hole (6) on both inner and outer sides of the hole.
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patent: 4391385 (1983-07-01), Rausing
patent: 4397401 (1983-08-01), Ueno et al.
patent: 4669640 (1987-06-01), Ando et al.
Elkins Gary
Tetra Pak Finance & Trading S.A.
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