Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1990-11-01
1992-02-18
Elkins, Gary E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
229 45, 22912504, 22912513, 215232, B65D 4308
Patent
active
050886428
ABSTRACT:
A container for liquids and bulk materials is made from a blank having a plurality of sets of folding lines thereon. The container comprises a substantially parallelipipedic body having side walls and laterial edges between the side walls, the lateral edges comprising a first set of folding lines of the blank, and a funnel-shaped portion on top of the body comprising faces extending from the side walls, the head portion tapering in cross-section towards a central annular opening of predetermined shape. The head portion further comprises triangular folding pockets folded inwardly along a second set of folding lines towards the interior of the head portion and outwardly along a third set of folding lines so that the folding pockets are disposed in pairs and bear along interior surfaces of the faces. The folding pockets are sealed to the interior surfaces along the interior folds and along upper edges of the folding pockets so that the folding pockets are closed off to the interior of the head portion. The container further comprises a spout or an adapted for a spout and a flange disposed on the funnel-shaped head portion from the interior of the container. The spout or adapter and the flange are shaped to conform to the predetermined shape of the central annular opening. Preferably, the container is made from a cardboard material, or a cardboard/plastic multi-layer composite material.
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Elkins Gary E.
McDonald Christopher
PKL Verpackungssysteme GmbH
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