FR2809708A1 - Packaging tray for cans comprises bottom and side walls connected to bottom by folding lines - Google Patents

Abstract

The cardboard packaging tray for a layer of identical cans (9) with round lids comprises a bottom and a main side walls. Opposite side walls are connected to the bottom by folding lines. The cans are arranged in staggered rows (12,13). Independent claims are included for (a) a blank, (b) the process for making the tray from the blank, and (c) the machine for making the tray from the blank.

Description

The present invention relates to a cardboard sheet packaging tray for at least one sheet of identical boxes with a burr cover, comprising a bottom and a belt of a carton. main side walls including two opposite first side walls connected to the bottom by first fold lines, and two opposite second side walls connected to the bottom by second fold lines perpendicular to the first fold lines.

It also relates to a blank for -a realization of such a tray, a package comprising round lid boxes manufactured with such a blank, a method and apparatus for forming such a package.

It finds a particularly important application although not exclusive in the field of trays for dairy products, such as cheeses in camembert type boxes or coulommiers, stored stacked on pallets of standardized dimensions.

Containers in the form of a rectangular box for cheese are already known, as represented under reference 1 of FIGS. 1 and 2. The cheeses are stored in identical rows 2, 3 of boxes 4, for example two rows of five boxes, to form a layer 5. three times two boxes, for standard size pallet.

Such packages have disadvantages. They do not allow optimized storage of boxes per layer of pallets. For the same size, packaging everything, they can also be used with only one type of box of specific dimensions.

The present invention aims to provide a tray, a blank, a packaging, a method and an apparatus for constituting such a package better than those previously known to the requirements the practice, especially in that it allows with same tray of packaging boxes of different shapes and sizes, in isomodular fashion, while increasing the number of boxes per layer of pallets compared to trays of the prior art.

This results in a reduction in the cost, the weight, the number of shelf references and the number of pallets to be managed, which generates significant transport and handling gains.

Packaging requires only one type of machine, which leads to increased flexibility and the possibility of standardization between the different factories of the same company.

Having identical packaging for boxes of different products will allow a mix of trays on the pallets and therefore a better filling pallets, resulting in greater stability of the load, and a reduction in storage costs, transportation and handling.

For this purpose, the present invention proposes in particular a packaging tray made of cardboard sheet material for at least one sheet of identical boxes with a round lid, comprising a bottom and a main side wall belt, of which two opposite first side walls connected to the bottom by first fold lines, two second opposite side walls connected bottom by second fold lines perpendicular to the first fold lines, characterized in that each of the second walls comprises at least one crushed or recessed area of horizontal section of complementary shape or substantially complementary to that of a box cover sector and of sufficient height to allow its embedding.

By box cover sector, it is necessary to hear the disk segment formed by the cover or the portion of the lid periphery forming a center angle lying in the order of 100 to a few degrees, over a height radial of maximum segment f determined, varying from 1 mm, or even 2 mm to a few millimeters, for example 10 mm. The height f is sufficient to allow the embedding of the sector of the cover in the wall of the plate, possibly through the entire wall. Sufficient height means a vertical dimension at least equal to the height or thickness of the lid boxes intended to be placed in the tray.

In advantageous embodiments, one and / or the other of the following provisions are also used.

- The crushed or recessed area is centered relative to the corresponding wall; the crushed or recessed zone has a vertical height equal to or slightly greater than the height of a can lid; the walls are of sufficient height to contain at least two sheets of superposed boxes. Advantageously, the tray contains three or four superposed layers; the overall lateral and longitudinal dimensions of the plate are respectively of the order of 300 mm and of the order of 400 mm. By the order of, it is necessary to hear 1 to 2; - The first opposite side walls are respectively provided on either side on their side side, a set of at least one first flap, said game being fixed, for example by gluing, on the second side wall adjacent and clean to form a cut corner.

Such an arrangement thus allows a better blocking of the end boxes in the tray, which come to rest on the flaps or skews forming cut corner; the second opposite side walls are devoid of flaps, and are of a height smaller than the height of said first walls.

The invention also provides a blank allowing the formation of the tray as described above.

It also proposes a blank for the constitution of a packaging tray made of cardboard sheet material for at least one sheet of lid boxes, comprising a rectangular or substantially rectangular central panel provided on each side with a rectangular flap or substantially Rectangular namely two first opposed flaps connected to the central panel by first fold lines respectively provided with a first flap on their lateral sides, and two opposite second flaps devoid of flaps, each of said first flaps being connected one side to the first side flap corresponding by a second folding line, perpendicular or substantially perpendicular to the first fold line of said corresponding flap, and being connected on the other side to a second lateral flap by a third fold line, parallel or substantially parallel to said second line of fold; folding, clean to be folded and glued on the second flap adjacent to said first flap, the first and second flaps then forming cut corners, characterized in that each of the second flaps comprises at least one crushed or recessed area of cross-section of complementary shape or substantially complementary to that of a sector of box lid and of sufficient height to allow its embedding.

In an advantageous embodiment, the thickness and the lateral and longitudinal dimensions of the shutters and the central panel are such that the overall lateral and longitudinal dimensions of the plate once formed are respectively of the order of 300 mm and the order of 400 mm.

The invention further proposes a package comprising a tray of the type described above, characterized in that it comprises at least one sheet of three rows of circular boxes with a lid arranged in false staggered rows, namely two peripheral rows of three boxes. end and central row of two middle boxes, the end boxes being tangent to the center boxes, end boxes located at the corners facing two peripheral rows being separated from each other by a first determined distance, two boxes of adjacent end of the same peripheral row being separated therebetween by a second determined distance and the two middle boxes being separated from each other by a third determined distance. Box distances are defined as the distances between the peripheral edges of the lids of two adjacent boxes.

Advantageously, the first determined distance is between about 56 mm and about 50 mm, the second determined distance is between the order of 30 mm and about 25 mm, and the third determined distance is between about 24 mm and about 5 mm, for boxes of cover diameter respectively between 110 mm and 113 mm.

The invention also proposes a process for the manufacture or constitution of packagings for at least one sheet of identical boxes with a round lid, characterized in that said boxes are placed in a tray whose two opposite walls each comprise at least one crushed zone respectively. or recessed complementary shape to that of a box cover sector, by performing the following steps.

two peripheral rows of three end boxes and one central row of two middle boxes are introduced laterally or from above the tray, the end boxes being arranged tangentially to the center boxes, the covers of the end boxes located at center being embedded in said crushed or recessed areas of the tray, the end boxes located at the corners opposite the two peripheral rows being separated from each other by a first determined distance, the adjacent end boxes by the same row peripheral being separated therebetween by a second determined distance and the two middle boxes being separated from each other by a third determined distance.

It also proposes, and in particular apparatus for constituting packages for at least one sheet of round boxes with a lid, characterized in that it comprises means arranged for arranging said boxes in a tray whose two opposite walls each comprise at least one crushed zone respectively. or recessed complementary shape to that of a box cover sector, namely lateral introduction means or by the top of the tray two peripheral rows of three end boxes and a central row of two middle boxes said insertion means being arranged so that the end boxes are arranged tangentially to the center boxes, the end boxes situated at the angles opposite the two peripheral rows are separated from each other by a first distance determined, the adjacent end boxes of the same peripheral row are separated interspersed between it by a second determined distance, and the two middle boxes are separated from each other by a third determined distance. The invention will be better understood on reading the following description of the embodiments given as non-limiting examples. The description refers to the accompanying drawings in which Figures 1 and 2 respectively show a top of a tray and a pallet tray layer, containing round lid boxes according to the prior art.

Figures 3 and 4 show a top view of a tray and a pallet tray layer, according to the embodiment of the invention more particularly described here.

Figures 5, 6 and 7 show, in top view, three identical trays according to the embodiment of the invention of Figures 3 and 4, each comprising a model of round lid box of different diameter.

FIG. 8 is a plan view of a two-layer blank corresponding to the plate of FIGS. 5, 6 and FIG. 9 is a plan view of a blank according to another embodiment of the invention, at four layers.

FIG. 10 is a sectional view of two superimposed trays respectively obtained with a standard blank corresponding to that of FIG. 9.

Figure 11 is a plan view of a blank according to another embodiment of the invention, with several layers, but with crushed recessed areas.

FIG. 12 is a sectional view of two superimposed trays respectively obtained with blanks of the type corresponding to that of FIG. 11.

Figures 13, 14 and 15 are simplified operating diagrams each giving an embodiment of the method, and the corresponding apparatus, for the formation of round-lid box packages, according to the invention.

Figures 1 and 2 respectively show a plate 1 and a layer 5 trays 1 for boxes 4 round lid of known type.

The boxes 4 are arranged in two rows 2, 3, the boxes 1 being then palletized in the form of three rows of two trays.

On a standard pallet of length 1200 and width 800 mm, it is thus possible to have six trays or cases 1 (each of dimensions 590 mm x 260 mm) of ten boxes, or sixty boxes per layer.

FIG. 3 shows a tray embodiment 6 according to the invention, with eight boxes 4 per tray.

The trays here occupy an area of 300 mm x 400 mm, which allows, on the same pallet 7 of 1200 mm x 800 mm, to place eight trays 6, ie sixty four boxes 4 per layer. In the rest of the description, the same reference numbers are used to designate identical or similar elements.

Figures 5, 6 and 7 show the embodiment of the package 8 according to the invention more particularly described here, wherein are respectively placed three series of boxes, 10, 11, round lid, of three different diameters.

FIG. 5 shows a double-sided corrugated cardboard packaging, for example 2 mm thick, formed by a cut-off plate, overall length 1 = 400 mm and overall width L = mm, containing boxes 9 with round lid, diameter d = 113 mm.

Specifically, the boxes 9 are arranged in false staggered rows, namely two peripheral rows 12, 13 of three end boxes and a central row 14 of two middle boxes.

The covers of the end boxes located at the angles opposite the two peripheral rows are separated from each other by a first distance of 50 mm, two adjacent boxes of the same peripheral row being separated from each other by a second distance d2. = 25 mm and the two middle boxes, tangent with each of the six end boxes, being separated from each other by a third distance d3 = 5 mm. These distances are obviously to be considered with the usual tolerance observed for this type of packaging and boxes, that is to say for example of the order of 1 or 2 mm.

The dimensions of the boxes and the distances between them then imply a fitting of the two boxes in the middle of the two peripheral rows into the opposite walls 15 and 16 over a width x of the order of 60 mm, for a maximum overflow beyond the wall of the box. packaging of the order of 3 mm. Figure 6 shows the same plate 8 containing this time boxes whose round lid diameter = 112 mm.

The first, second and third distances are here respectively 1 = 52 mm, 2 = 26 mm and 3 = 11 mm, for a recess in the walls and 16 for a distance x 'of the order of 49 mm and maximum overflow e of the order of 0.5 mm.

Figure 7 shows the same tray containing lid boxes of diameter = 110 mm.

In this case, there is no embedding of the boxes in the middle of the peripheral rows 12 and 13 in the opposite walls 15 and 16, said boxes being on the other hand located at a distance from the walls in the order of 1.5 mm .

The first, second and third distances are respectively 1 = 56 mm, <B> d1 2 </ B> = 29 mm and 3 = 24 mm.

Thus, with the same plate 8, boxes of different lid diameters of 113 mm, 112 mm and 110 mm can be packaged. FIG. 8 shows a blank 17 made of corrugated cardboard sheet making it possible to manufacture the tray of FIGS. 5 to 7 for three superposed layers of round cheese boxes.

The blank 17 comprises a central panel 18 formed by a rectangle whose end angles are cut at an angle.

The panel 18 is provided on its transverse sides with two first rectangular flaps 19 connected to the panel by first fold lines 20, each first flap comprising on either side a first rectangular flap 21 of width equal to or substantially equal to that of the oblique portion 22 of the end angle of the central panel, said first flap being connected on one side to the flap by second fold lines 23, perpendicular to the first, and connected on the other side to the second flap rectangular 24, by third fold lines 25, parallel to the second fold lines 23. The flaps 19 comprise for example stacking lugs 26, centered, adapted to cooperate with recesses 26 'located at the first fold lines, known way in itself.

The panel 18 is also provided on its two longitudinal sides with two substantially rectangular second flaps 27 provided with lateral edges 28 at an angle, for example forming an angle of the order of 80, with the second fold lines 29 joining the sign.

The second flaps 27 are devoid of flaps and comprise three recesses 30, rectangular, of longitudinal dimension equal to or slightly greater than that of a sector of the cheese box of larger diameter may be packed in a tray, which allows therefore embedding each superimposed layer in the flap vis-à-vis, as previously described.

The recesses are in fact arranged in height to correspond to the location of the box covers of each layer, and in doing so allow the embedding of the cover sector vis-à-vis at the right height.

The plate further comprises ventilation holes 31 in a manner known per se and / or handles 32 gripping.

Figure 9 shows another embodiment of a blank 33 according to the invention, for four layers or sheets of boxes.

Four rectangular recesses 30, the last of which is open upwards, are provided here the second flap 27 '. The panel 18 is connected to two first slightly trapezoidal flaps 34, the second and third lines 35 and 36 of junction with the first and second flaps 37 and 38, being slightly oblique to give a trapezoidal cross-sectional shape (see FIG. .

FIG. 10 shows in section two trays 39 for four layers or sheets of boxes obtained with blanks of the type shown in FIG. 9.

The second flap 24 is here glued inside the second flap 27 '.

Figures 11 and 12 show another embodiment of blank 40 and plate 41 (in section) according to the invention.

The blank 40 is identical to the blank 17 described with reference to FIG. 8 except for the second flaps 42 which are provided at the center of a crushed, rectangular, continuous portion 43 of width equal to or a little greater than the length maximum cover sector of the larger diameter box intended to be packed in such tray, and height for example equal to the height of the second flap 42.

Various embodiments of the method according to the invention of the apparatuses which it implements will now be described, with reference to FIGS. 13, 14 and 15.

Figure 13 shows a lateral boxing of boxes 4.

The boxes are brought to a track 50 and blocked by a stop 51 of decompression.

The following steps are then implemented. 52. Accumulation of boxes 53: Stacking of boxes (on two, three or four levels) 54: Selection of two or three stacks of boxes 55: Transfer of a set of three stacks onto a support plate (not shown) 56: Transfer of a set of two stacks on the plate 57: Transfer of a set of three stacks on the plate 58: The eight stacks 59 correctly spaced are then simultaneously transferred to be capped by the blank (not shown) 60.

The assembly is then raised vertically in a shaper (vertical cavity, not shown). Finally, out of the cavity, everything is returned, the open face of the tray being then above, while the boxes are upside down in the tray. These last two steps have not been schematized in the figure either.

In this principle, the spacing between the stacks of boxes is achieved by cylinder ends 61 equipped with form plates 62 for the separation of the sets of three stacks, and by a cylinder end 63 of the cylindrical type for the separation of the boxes. central units belonging to sets of two piles.

Figure 14 shows the steps numbered 1 to 6 in the figure, another principle of lateral packing. In this principle, the stacks of boxes are brought on a track 70, and blocked by a stop 71 of decompression (steps 1 and 2). Then, by successive plate transfer 72, 73, 74, the stacks of boxes are roughly positioned by eight.

A shaper (not shown) then descends on the assembly and exactly repositioned the boxes with jacks 75 (steps 3 and 4).

The shaper can then transfer the batteries positioned under a cavity (step 5). The blank (not shown) then covers the piles and the stack + flan assembly is raised in the cavity that sets the blank around the boxes.

At the cavity outlet, the whole is returned (step 6 not shown schematically), the open face of the tray then being above, while the boxes are upside down in the tray.

FIG. 15 gives another packing method according to the invention, with vertical casing.

Here, the boxes are accumulated on three lanes at 80, abutted at 81 in batches of two or three, the central queue being shifted by half a diameter.

A frame 82 comprising eight movable heads equipped with suction cups caps the batch eight boxes, then the heads move to position the boxes according to the arrows 83.

The layers 84 of eight boxes can then be transferred one by one onto the blank (not shown), and the assembly will then be shaped in a cavity by punching down, or stacked (arrow 85) to form a batch which will be capped by the blank and reassembled in a cavity.

As is obvious and as also follows from the above, the present invention is not limited to the embodiments more particularly described. On the contrary, it embraces all the variants and especially those where the number of boxes per layer is greater.

Claims (16)

<U> CLAIMS </ U> 1. Tray (6, 8, 39) of cardboard sheet material for less than one sheet of identical boxes (4) with a round lid, comprising a bottom (18) and a main side wall belt, of which two first walls opposing lateral sections (19, 34) connected at the bottom by first folding lines (20), two opposite second side walls (27, 27 ', 42) connected at the bottom by second fold lines (29) perpendicular to the first lines of folding, characterized in that each of the second walls, 27 ', 42) comprises at least one area (30, 43) crushed or recessed horizontal section of complementary shape or substantially complementary to that of box cover area and height vertical enough to allow its embedding. 2. Tray (6, 8, 39, 41) according to claim 1, characterized in that area (30, 43) crushed or recessed is centered relative to the corresponding wall. 3. Tray according to any one of the preceding claims, characterized in that the crushed or recessed area has a vertical height equal to or slightly greater than the height of a can lid. 4. Tray according to any one of the preceding claims, characterized in that the walls are of sufficient height to contain at least two sheets of superposed boxes. 5. Tray according to any one of the preceding claims, characterized in that the lateral and longitudinal overall dimensions of said plate are respectively of the order of 300 mm and of the order of 400 mm. 6. Tray according to any one of the preceding claims, characterized in that the first opposite side walls are respectively provided on each side side with a set of at least a first flap (21), said clearance being fixed on the second adjacent lateral wall, suitable for forming a cut wedge. 7. Tray according to any one of the preceding claims, characterized in that the second side walls (27, 27 ', 42) opposite are devoid of flaps, and are of a height smaller than the height of said first walls. 8. blank (17, 33, 40) for the constitution of a packaging tray made of cardboard sheet material for at least one sheet of boxes (4) with a round lid, comprising a central panel (18) rectangular or substantially rectangular member provided on each side with a rectangular or substantially rectangular flap, namely two opposite first flaps (19, 34) connected to the central panel (18) by first folding lines (20) respectively provided with a first flap (21); ) on their lateral sides, and two second flaps (27, 27 ', 42) opposite without flaps, each of said first flaps being connected on one side to the first flap (19, 34) lateral corresponding a second fold line (29 perpendicular substantially perpendicular to the first fold line (20) of said corresponding flap, and being connected on the other side to a second side flap (24) a third fold line (25), parallel substantially parallel to the ladder ite second fold line, adapted to be folded and glued to the second flap adjacent said first flap, the first and second flaps being adapted to form cut corners, characterized in that each of the second flaps (27, 27 ', 42) comprises at least one crushed or recessed area of cross-section of complementary shape or substantially complementary to that of a box cover sector and of sufficient height to allow its embedment. 9. blank according to claim 8, characterized in that the area (30, 43) crushed or recessed is centered relative to the corresponding flap and in that it has a height equal to or slightly greater than that of a lid of box. 10. blank according to any one of claims 8 and 9, characterized in that the flaps are of sufficient height so that the plate once formed can contain at least two sheets of boxes superimposed. 11. blank according to any one of claims 8 to 10, characterized in that the thickness and the lateral and longitudinal dimensions of the flaps and the central panel are such that the overall lateral and longitudinal dimensions of the plate once formed are respectively of the order of 300 mm and of the order of 400 mm. 12. Packaging comprising a tray according to any one of claims 1 to 7, characterized in that it comprises at least one sheet of three rows of circular boxes with lid arranged in false staggered rows, namely two peripheral rows (12, 13). ) of three end boxes (9, 10, 11) and a central row (14) of two center boxes, the end boxes (9, 10, 11) being tangent to the middle boxes, the end boxes being located at the angles opposite the two peripheral rows being separated from each other by a first determined distance, two adjacent end boxes of the same peripheral row being separated therebetween by a second determined distance and two middle boxes being separated between they by third determined distance. 13. Packaging according to claim 12, characterized in that the first determined distance is between the order of 56 mm of the order of 50 mm, the second determined distance is between the order of 30 mm and the order of 25 mm, and the third determined distance is between about 24 mm and about 5 mm for boxes of cover diameter respectively between 110 mm and <B> 113 </ B > mm. 14. Package according to any one of claims 12 and 13, characterized in that it comprises at least two sheets of boxes. 15. A method of forming packages for less than one sheet of identical boxes with a round lid, characterized in that said boxes are arranged in a plate, two opposite walls of which each comprise at least one crushed or recessed area of complementary shape substantially complementary to that of a box lid sector, by performing the following steps. two peripheral rows of three end boxes and one central row of two middle boxes are introduced laterally or from above the tray, the end boxes being arranged tangentially to the center boxes, the covers of the end boxes located at centered being recessed in said crushed or recessed tray areas, the end boxes at the corners opposite the two peripheral rows being separated from each other by a first predetermined distance, the adjacent end boxes by the same peripheral row being separated between them by a second determined distance, and the two middle boxes being separated from each other by a third determined distance. Packaging forming apparatus for at least one sheet of round boxes with a lid, characterized in that it comprises means arranged for arranging said boxes in a plate whose two opposite walls each comprise at least one crushed or recessed zone of complementary shape to that of a box cover sector, namely means for lateral introduction or the top plate of two peripheral rows of three end boxes and a central row of two middle boxes, said means of With the introduction being arranged so that the end boxes are arranged tangentially to the center boxes, end boxes located at the corners facing the two peripheral rows are separated from each other by a first determined distance, the boxes adjacent end of the same peripheral row are separated from each other by a second determined distance, and the two middle boxes are separated from each other by a third determined distance.