Envelopes – wrappers – and paperboard boxes – Paperboard box – Adjacent sidewalls connected by a folded web unitary with both
Patent
1989-11-01
1992-02-11
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
Adjacent sidewalls connected by a folded web unitary with both
229186, B65D 524
Patent
active
050869710
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a folded container with a base and four side panels that are connected by pairs of gusset sections which are folded into place.
Such folded containers are in common practical use; they have the serious disadvantage that the gusset sections have to be glued directly to a side panel. This makes considerable machine equipment necessary, so that it is practically impossible to erect these known folded containers manually.
DE-OS 36 10 615 also discloses a folded container which is designed in such a way that the side panels brace themselves against each other, so that the container remains erected. It is very simple to erect this container, but there is no absolute security that the container will not fall apart unintentionally.
The purpose of the present invention is to propose a folded container of the kind outlined above, that is easy to erect but at the same time guarantees absolutely that the container will not fall apart unintentionally.
In the solution to this problem proposed by the invention one section of each of the pairs of gusset sections is provided with a tab which rests against and is attached to the outside of one side panel once the side panels have been folded upwards. The advantage of such a tab is that it is easily accessible, so that it is no problem to attach it to the side panel.
Attachment of the tab is simplified even more if in accordance with the invention cut lines, in which the tabs lock, are provided in the side panels in the area of the tabs.
It is also very advantageous if in accordance with the invention cut lines are provided in pairs located a distance apart, the middle sections of which meet while the middle section of the tabs is somewhat wider and locks behind the side panel sections defined by the two cut lines. The widest parts of the tab are the only parts to be in the interior of the carton when the tabs engage the cut lines. In this way the tabs are locked very securely simply by pressing them inwards.
The cut lines in the side panel essentially represent two C-shaped cuts that are back to back. If the cuts are designed in this way, the tabs can simply be placed against the side panel and pressed in, either manually or with a simple tool.
It is also very favourable if in accordance with a further embodiment of the invention the tabs are provided with a folding line that runs parallel to the theoretical line with which they are hinged to the gusset section. This folding line makes it considerably easier to press in and lock the tabs.
In a further very advantageous embodiment of the invention, one of the side panels is provided with two tear lines extending from the top to the bottom.
These tear lines make it possible to detach and fold down the central section of the side panel, which facilitates removal of the product considerably.
The drawing shows one embodiment of the invention:
FIG. 1 shows a flat board blank and
FIG. 2 shows a folded container erected from the blank illustrated in FIG. 1.
1 in FIG. 1 is a board blank that has a base 2 to which four side panels 3, 4, 5 and 6 are hinged. Pairs of gusset sections 7, 8, which are connected to the side panels via folding lines 9, 10 and to each other via a folding line 11, are located between the side panels.
The length of the gusset section 7 hinged to the side panel 4/6 corresponds to the height of this side panel, while the gusset section 8 is shorter. A tab 12, which is provided on the gusset section 7 and has a folding line 13, projects into the space left as a result.
The roughly back-to-back C-shaped cut patterns 14, represented by the upper and lower curves of the "C" 15 and 16 and the middle section of the "C" 17, are provided in the two side panels 3 and 5.
The free edge of the side panel 4 has two notches 18, 19, from which two tear lines 20, 21 extend to the line hinging the side panel 4 to the base 2. A section 24 is thus divided off from the side panel and can be detached along the two tear lines.
In FIG. 2 a folded container 22 has been erected from the board blank by folding th
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Detzel Josef
Kraus Rudolf
Schraegle Walter
Koatz Ronald A.
Lever Brothers Company Division of Conopco, Inc.
Marcus Stephen
McDonald Christopher
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