FR2596368A1 - CAULTED CARDBOARD FOR EGG BOX - Google Patents

Abstract

THE INVENTION CONCERNS AN EGG BOX WHOSE BOX 1 IS CLOSED BY A LID 9. THE LID 9 IS GLUED BY DROPS OF GLUE 11 POSED ON THE FLAT TOP 4 OF THE COLUMNS 3, OR ON THE PERIPHERAL RIM 6. APPLICATION: AUTOMATION COMPLETE WITH A CHAIN FOR EGG PACKAGING.

Description

The present invention relates to improvements made to the

  honeycomb-like boxes of the kind used to wrap eggs or objects

3 fragile various.

  It relates more particularly, although not exclusively, an egg box consisting of two assembled elements, namely: a honeycomb made of a piece of thermoformed plastic material;

  a cover consisting of a simple plate cut from a sheet of cardboard or the like.

  Means are provided for fixing the lid on the rack, after placing the eggs in the cells. These means are generally constituted on the known egg boxes, by a latching system of the lid on profiles suitably defined in

  undercut on the top of the rack.

  Such a known system has various disadvantages. In particular the closure of the box is not inviolable and it does not prohibit some cheating in self-service stores: it remains possible to open the lid to steal some of the content, or to replace

  a broken egg, after which the lid is closed.

  In addition, the effectiveness of clipping is often insufficient to prevent the lid from unlocking

  under the weight of the eggs if the box is returned.

  Finally, such a system does not allow setting up suddenly; on the lid on the locker in a

  packaging chain with fully automatic operation.

  In some cases, it is necessary to provide in the lid plate, the ratcheting opening cutouts that compromise the aesthetic appearance of the box 35 and reduce all the remaining available area to possibly print the lid. The latter being generally constituted by a cut cardboard, it is opaque

  and masked at the sight of the buyer, the eggs so wrapped.

  The object of the present invention is to avoid these drawbacks by producing an inviolably closed egg box, by an implementation carried out on a

  packaging chain with fully automatic operation.

  An egg box according to the invention comprises a flat cut lid, which is attached to the upper part of a honeycombed plastic container thermoformed to define, between the cells, columns directed upwards while a peripheral edge surrounds the upper part of the rack, means being further provided for securing the lid to the rack after

  filling, and it is characterized in that these means are constituted by the combination of the following elements: a) several columns between the cells have a flat top located substantially at the same level as the peripheral edge of the rack.

  b) when it is put in place on the solid bin, the lid is glued on parts of the bin located in the plane common to the vertices of the columns

and at the peripheral edge.

  According to another characteristic of the invention, the bonding is carried out by affixing a point

  glue or bead of glue on the areas to be joined.

  According to another characteristic of the invention, the bonding is carried out hot by glue injection according to the technique known as "hot-melt".

  The appended drawing, given by way of non-limiting example, will make it possible to better understand the invention and

  the benefits it is likely to provide.

  Figure 1 shows the rack of a boot with 30 eggs according to the invention, when there are

  glue before placing the lid.

  Figure 2 is a section along II-II (Fig.

1).

  Figure 3 shows the lid when it is on the rack to close the box.

  The egg box shown in the drawings comprises a rack 1 made for example from a sheet of thermoformed plastic material. It comprises cells 2 separated by columns 3 whose vertex 40 is flat.

  Each cell 2 is intended to receive an object such as an egg 5.

  The upper part of the rack 1 is flanged by a flat edge 6 which can in turn be reinforced by a stiffening flange 7. The flat top 4 of the columns 3 is located in the same geometric plane 8 as

the upper face of the flat edge 6.

  The egg box also has a lid 9 which is completely flat and completely solid, ie in the interior of which no opening is cut. On the other hand, a lateral notch 10 may be provided on its peripheral contour.

  The lid 9 is cut from a sheet 15 of any material which may be: a transpatent plastic plate; an opaque plastic material, or even a simple cardboard. In particular, the lid 9 can be

  in a particularly cheap material.

  The operation is as follows: After placing the eggs 5 in the cells 2 of the bin 1, a glue point 11 is affixed to the flat top 4 of the columns 3. It is then sufficient to ask

  the cover 9 on the support plane 8 of the rack 1, so that the closure of the box is ensured inviolably.

  Alternatively, it is possible to replace the point 30 of adhesive II on the top 4 of the columns 3, with a bead of adhesive affixed to the peripheral edge 6: in this case, the cover 9 is bonded by its periphery to the locker

  1. This gluing can be done in points or continuously.

  In any case, the glue can be applied by an injector 12 or by means of a brush.

  the application can be carried out cold, or by the known technique, called the "hot melt".

  We see that the locker 1 thus has no undercut in the area of the columns 3, 40 which allows to use a cheap plastic material

  and fully automate the packaging chains.

  Of course, outside the columns 3, the bin 1 may have (in particular on its periphery), undercut areas of known type of the kind expected, for example to facilitate the de-stacking of several

bins.

Claims (5)

  1-Boot egg comprising a lid (9) cut and flat, which is reported on the superieu5 re of a honeycomb crate (1) of thermoplastic material heat-sealable to define, between the cells (2), columns (3 ) directed upwards, while a peripheral edge (6) surrounds the upper part of the rack (1), means being further provided for fixing the lid (9) on the rack (1) after filling, characterized in what these poyens are constituted by the combination of the following elements: a) several columns (3) between the cells (2) have a flat top (4) located substantially in the same plane (8) as the peripheral edge (6) locker; b) when it is put in place on the solid rack, the lid (9) is glued on parts of the rack (1) located in the plane (8), common to the vertices (4)   columns (3) and the peripheral edge (6).   2- Egg box according to claim 1, characterized in that the lid (9) is glued on   the flat top (4) of the columns (3).   3- Egg box according to claim 1, characterized in that the lid (9) is glued along the peripheral edge (6) of the rack (1).   4-Bditier eggs according to claim 3, characterized in that the bonding along the peripheral edge (6) is performed by points.   Egg box according to claim 3, characterized in that the bonding along the peripheral edge (6) is effected continuously.   6. Egg box according to any one of the preceding claims, characterized in that the rack (1) has on the columns (3) no undercut portion, while the lid (9) is   completely flat, consisting of a simple plate or cardboard.