Envelopes – wrappers – and paperboard boxes – Paperboard box – Box includes two side walls which are not formed from the...
Reexamination Certificate
1999-05-24
2001-05-01
Shoap, Allan N. (Department: 3727)
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box includes two side walls which are not formed from the...
C229S122220, C229S162700, C220S004210, C220S062000, C220S602000, C220S611000, C220S617000, C220S655000, C220SDIG002
Reexamination Certificate
active
06223980
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a packing box for products, in particular food products such as pastries.
BACKGROUND OF THE INVENTION
Packaging boxes conventionally used in the food trade are generally made of a cardboard blank, cut out, bent and cemented. Such boxes conventionally are not usable in industry and for the distribution of foodstuffs because of their cost of production and filling. Moreover, this type of package does not permit the enclosed product to be seen.
There have been developed boxes that are entirely of transparent or translucent material, permitting overall direct viewing of the contained product.
However, such boxes are not suitable for high-class contents such as for example pastries, because of their poor and relatively cheap appearance.
It is thus preferred to use boxes whose bottom is of cardboard and on which has been placed a transparent film or cover arranged to fit onto the bottom.
So as to obtain viewing of the contents, the cover can comprise a window on top closed by a transparent or translucent film. The cover can also be made entirely of transparent or translucent plastic material. However, in this latter case, the production of such covers and their emplacement are not easy. Moreover, there is not always obtained a locked closure of said cover on the bottom, the cover being simply placed over the bottom.
There has been proposed, in Belgian patent BE-A-572 970, a box constituted of a bottom on which is disposed and locked a cover having a shape corresponding to the opening of the bottom of the box and which comprises two flaps articulated on opposite corners of the cover. These flaps can cover totally the side faces of the bottom and thus have respectively an edge of their own disposed below the bottom, the bottom thus having on its side surfaces retaining plates whose lower portion extends below the bottom so as each to constitute a retaining element in which can be fixed the flexible edge of each flap of the cover provided with a groove adjacent of the bend between the flap and the edge.
According to another embodiment, in the absence of a retaining plate, the edge is bent into V-shape and is disposed below the bottom or else a retaining plate is provided along all the lengths of the lateral surface to serve as an abutment to the free end of the edge bent in a V. The articulated flaps can also partially cover the lateral surfaces of the bottom and more precisely the upper edge of said lateral surfaces. These flaps thus have an edge co-acting with an edge of the opening of the bottom by the horizontally projecting opening of the bottom provided at the upper end of the lateral surfaces.
In this type of box, it is thus necessary, to obtain good closure, to provide locking means for the flaps carried by the bottom which are always projecting from one lateral surface either at its upper end or at its lower end. These locking means provided on a corner of a lateral surface of the bottom are not always simple to make.
SUMMARY OF THE INVENTION
So as to overcome these drawbacks, there is proposed a packaging box whose cover of transparent or translucent plastic material is easily produced and whose closure is simple and easy because of the simple and easy emplacement of the cover on the box, the closure being adapted also moreover to be locked.
To this end, the invention has for its object a packaging box of the type comprising an open cardboard bottom of parallelepipedal shape and a transparent or translucent cover mounted removably on the opening of said bottom, characterized in that the cover comprises an embossment turned inwardly of the box and co-acting with the opening of the bottom as well as at least two flaps articulated on opposite edges of the cover, each covering at least partially a lateral surface of said bottom, said flaps moreover each comprising at least one locking means co-acting with a complementary locking means provided in a side surface of the bottom or with complementary locking means carried by the other flap or auxiliary flaps articulated on other edges of the cover.
Thus, upon emplacement of the cover on the bottom, there is ensured a closing of the box by the co-action of the locking means carried by the flaps with the complementary locking means provided on the bottom and/or on the other flaps of the cover.
The bottom is preferably made of cardboard in the conventional way, and it can be of the “automatic” type, that is, re-bendable.
The cover is preferably constituted by thermo-forming a plastic material, elastically deformable, transparent or translucent. It is present in the form of a parallelepipedal corresponding to the opening of the bottom.
Thus, according to a first embodiment, the cover comprises a protrusion turned inwardly of the box when the cover is emplaced on the bottom and at least two opposite flaps provided each with locking means co-acting with a complementary locking means provided in each lateral surface of the base that the flaps cover at least partially.
According to a modification, the cover preferably comprises two opposite flaps covering respectively entirely a lateral surface of the bottom, each flap having at its lateral ends, end tongues articulated about the corners of the bottom, each end tongue partially covering the adjacent lateral surface and each tongue having moreover a locking means co-acting with a complementary locking means provided on said adjacent lateral surface of the bottom.
Preferably, the locking means are of the tongue/slot type, known per se, and, in the case of the modified embodiment, they are provided respectively on the end tongues of the flaps of the cover and on the ends of the side surfaces of the bottom which are not covered by the flaps of the cover.
This modification permits providing recesses in the side surfaces of the bottom covered by the flaps of the cover so as to offer greater visibility of the product contents, said flaps being adapted to have embossments engaging in said recesses. In this manner there is assured good emplacement of the cover on the bottom.
In this embodiment, the closing of the box is obtained by the emplacement of the cover and the co-action of the locking means of said cover and of the bottom. The locking of the closure is obtained simultaneously to the closure itself by cooperation of the locking means of the flaps and of those of the bottom.
According to a second embodiment of the invention, the cover comprises at least two opposite flaps, each of the flaps being provided with locking means co-acting with a complementary locking means provided on the other flap or on an auxiliary flap of the cover so as to ensure closure of the cover on the bottom.
Thus, the emplacement of the abutment of the cover on the opening of the bottom permits good positioning and the closure is obtained simply by assembling the cover on the bottom by co-action of the locking means of the flaps which extend along lateral surfaces of the bottom. There is accordingly no need to encase the cover along the lateral walls of the bottom, which greatly facilitates closure of the box.
In this embodiment, each of the flaps comprises preferably an embossment as such to engage in a recess provided on the surface of the bottom covered by said flap so as to obtain among other things a locking of the closure of the box by engagement of said embossments in the windows of the bottom.
According to a first modification of this embodiment, the two flaps of the cover have, at their side ends, lateral prolongations articulated on the edges of the bottom, the two lateral prolongations of the first flap of the cover partially covering the adjacent surfaces and the two lateral prolongations of the second flap of the cover also covering partially the same surfaces, said lateral prolongations being arranged to cover said surfaces, one of the prolongations comprising a locking means co-acting with a complementary locking means provided on the other said prolongation.
Thus, upon locking the lateral prolongations, the cover is closed on the bottom, the embossm
Groupe Guillin
Mai Tri M.
Shoap Allan N.
Young & Thompson
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