EP3858757A1 - Device for wedging an object made of cellular cardboard and corrugated cardboard and corresponding packaging box - Google Patents

Abstract

The invention relates to a wedging device (1) for an object comprising: - at least one plate of cellular cardboard (10) comprising two parallel outer sheets of paper (11, 12) between which extend a plurality of sheets of paper (13) erected perpendicular or substantially perpendicular to the two outer sheets, - at least one corrugated cardboard plate (20) comprising two parallel outer sheets of paper (21, 22) between which extends at least one corrugated sheet (23) Said at least one corrugated cardboard plate (20) is assembled by one of its outer sheets (21, 22) to said at least one cellular cardboard plate (10). Furthermore, said at least one corrugated cardboard plate (20) has, in a plane parallel to its outer sheets (21, 22), at least one edge which protrudes or is recessed from one face of said at least one plate. of honeycomb cardboard.

Description

The subject of the invention is a device for wedging an object made of honeycomb cardboard and corrugated cardboard and a packaging box receiving this wedging device. The transport of an object requires the use of wedging devices in order to avoid deterioration of the transported object. Currently, the wedging devices are made of polystyrene which has the advantage of being light, easy to mold and not very abrasive. As environmental concerns become more and more important, manufacturers are seeking to replace this material with another more ecological material. Certain molded cellulose wedging devices have thus been developed. This material, which is essentially made from recycled paper and water, nevertheless has the drawback of being heavy, difficult to mold into complex shapes, abrasive and generates dust. In addition, it does not absorb shocks well and the existing production capacity is insufficient to cover the needs of the market. It is also possible to use crumpled paper, but this does not always provide good cushioning for the most fragile objects.

Honeycomb cardboard wedging devices are also known. The latter is formed of two parallel sheets of paper between which stand a plurality of sheets of paper substantially perpendicular to the two parallel sheets of paper. The cellular board, although relatively bulky, has good impact resistance in a direction perpendicular to the two parallel sheets but much lower impact resistance in a parallel direction. A sheet of honeycomb cardboard can be stamped (crushed) perpendicular to the planes of the parallel sheets of paper in order to accommodate an object. This stamping makes the cellular board resilient, promoting shock absorption, but decreases the overall strength of the cellular board. It is also necessary to protect the objects to be wedged against abrasion, in particular when it is in contact with the edges of a recessed or stamped part of a cellular cardboard plate.

Finally, corrugated cardboard can also be used, but its impact resistance and shock absorption capacity are relatively limited. In addition, its edges also prove to be abrasive, requiring additional protection for the object to be wedged.

The invention aims to resolve all or part of the aforementioned drawbacks.

To this end, a first object of the invention relates to a device for wedging an object, intended to be positioned inside a cardboard packaging, in particular in a closed state, of a packaging box, in bearing against at least one wall of the packaging. Such a cardboard package comprises walls defining a parallelepipedal enclosure.

• au moins une plaque de carton alvéolaire comprenant deux feuilles externes parallèles en papier entre lesquelles s'étendent une pluralité de feuilles de papier dressées perpendiculairement ou sensiblement perpendiculairement aux deux feuilles externes,
• au moins une plaque de carton ondulé comprenant deux feuilles externes parallèles en papier entre lesquelles s'étend au moins une feuille cannelée, et dans lequel :
• ladite au moins une plaque de carton ondulé est assemblée par une de ses feuilles externes à ladite au moins une plaque de carton alvéolaire, et
• ladite au moins une plaque de carton ondulé présente, dans un plan parallèle à ses feuilles externes, au moins un bord qui dépasse ou est en retrait d'une face de ladite au moins une plaque de carton alvéolaire.

This wedging device includes:

• at least one plate of cellular cardboard comprising two parallel outer sheets of paper between which extend a plurality of sheets of paper drawn up perpendicular or substantially perpendicular to the two outer sheets,
• at least one corrugated cardboard plate comprising two parallel outer sheets of paper between which extends at least one corrugated sheet, and in which:
• said at least one corrugated cardboard plate is assembled by one of its outer sheets to said at least one cellular cardboard plate, and
• said at least one corrugated cardboard plate has, in a plane parallel to its outer sheets, at least one edge which protrudes or is set back from one face of said at least one cellular cardboard plate.

Thus, when one or more corrugated cardboard plates assembled to the cellular cardboard plate present (s) at least one edge which protrudes from one face of the cellular cardboard plate (s), an impact suffered parallel to the ( x) Corrugated board (s) is received by the edge (s) of the corrugated board (s) and not by the cellular board (s), so that (s) are protected.

Similarly, when one or more corrugated cardboard sheets assembled to the honeycomb board plate has (have) at least one edge set back from one face of the honeycomb board (s), an impact suffered in parallel the corrugated cardboard plate (s) is received by the cellular cardboard plate (s) and not by the edge (s) of the corrugated cardboard plate (s), so that these are protected.

Thus, in all cases, due to the different dimensions of the plates, only one type of plate is damaged during an impact, the other type of plate remaining intact, so that the latter can still absorb subsequent shocks received. It will thus be understood that it is possible to choose to reinforce the wedging device in one or more particular directions by providing one or more corrugated cardboard plates parallel to the particular direction or directions and assembled to the honeycomb board or to the honeycomb boards.

In one embodiment, said at least one corrugated cardboard plate may extend parallel or substantially parallel to the outer sheets of the cellular cardboard plate. In this case, the strength of the wedging device is improved in parallel with the outer sheets of the honeycomb board plate.

In a variant, for better impact protection, at least one corrugated cardboard plate can be assembled to each outer sheet of said at least one cellular cardboard plate.

In another embodiment, which can be combined with the previous embodiment, at least one corrugated cardboard plate may extend perpendicular or substantially perpendicular to the outer sheets of the cellular cardboard plate. In this case, the strength of the wedging device is improved perpendicular to the outer sheets of the honeycomb board plate.

In a variant, for better impact protection, at least one corrugated cardboard plate can be assembled to each face of said at least one cellular cardboard plate perpendicular to its outer sheets.

The two described embodiments and their variations can be combined in any combination depending on the desired strength, the only limitation being that corrugated cardboard sheets extending perpendicular to each other do not. can both protrude from two contiguous faces of the foil cardboard plate (s).

In general, in order to improve its strength perpendicularly to the outer sheets of the cellular cardboard plate (s), the wedging device may comprise at least two cellular cardboard plates superimposed and assembled, in particular of the same shape and size.

In general, to improve its strength in parallel with the corrugated cardboard plates, the wedging device may comprise at least two corrugated cardboard plates superimposed and assembled, in particular of the same shape and size.

Also generally, said at least one cardboard cell sheet may have at least one housing produced by stamping or cutting, in particular to receive an object. Such a housing opens onto at least one of the outer sheets of said at least one cellular plate, and passes through optionally one or more sheets of corrugated cardboard assembled to the at least one outer sheet. Advantageously, superimposed cellular cardboard plates can have one or more communicating housings. Advantageously, when the wedging device comprises at least one corrugated cardboard plate assembled to an outer sheet of a honeycomb plate onto which said at least one housing opens, said at least one corrugated cardboard plate may have, in the plane of said at least one corrugated cardboard plate, namely in a plane defined by the outer sheets thereof, an orifice having an edge recessed or protruding from an edge of said at least one housing so as to provide a two-way cushioning time in the plane of said at least one sheet of corrugated cardboard. When two or more corrugated cardboard plates are assembled to this outer sheet of the cellular plate, they may be of the same size at the edge of the housing or of different sizes from one another. This or these corrugated cardboard plates may also be the at least one corrugated cardboard plate having, in a plane parallel to its outer sheets, at least one edge which protrudes or is recessed from one face of said at least one. honeycomb cardboard plate.

• un emballage en carton, notamment dans un état fermé, comprenant des parois définissant une enceinte parallélépipédique,
• un dispositif de calage selon l'invention disposé à l'intérieur de l'emballage et en appui contre au moins une paroi de l'emballage.

The invention also comprises a packaging box comprising:

• a cardboard packaging, in particular in a closed state, comprising walls defining a parallelepipedal enclosure,
• a wedging device according to the invention arranged inside the packaging and resting against at least one wall of the packaging.

The wedging device being supported against at least one wall of the packaging, it is understood that an impact suffered by this wall of the packaging will be transmitted to the wedging device and may be amortized in two or more stages due to the dimensions. different from the corrugated cardboard plate (s) and the cellular cardboard plate (s) of the wedging device.

Preferably, for better protection, the walls of the packaging can be solid walls, devoid of slots or openings.

Advantageously, for more effective damping, said at least one corrugated cardboard plate, at least one edge of which protrudes or is set back from one face of said at least one cellular cardboard plate, can extend perpendicularly to at least one wall of the packaging, the wedging device being supported at least against this wall, and optionally against the opposite wall and / or against the other or two other walls perpendicular to said at least one corrugated cardboard plate. This ensures a rapid transmission of a shock received by one or more walls of the packaging to the wedging device.

The packaging being of parallelepiped shape, a wedging device may be supported against four side walls opposite two by two and connected two by two by one side, and may have at least one corrugated cardboard plate, at least one edge of which protrudes. or is set back from one face of said at least one plate of cellular cardboard, which extends perpendicularly to these side walls.

In all the embodiments, the wedging device can rest on a bottom wall of the packaging, its or its cellular cardboard plates being preferably arranged parallel or perpendicular to this bottom wall.

• [Fig. 1] La figure 1 représente une vue schématique en perspective d'un dispositif de calage selon un premier mode de réalisation de l'invention,
• [Fig. 2] La figure 2 représente une vue schématique de côté d'une variante du premier mode de réalisation,
• [Fig. 3] La figure 3 représente une vue schématique en perspective d'un dispositif de calage selon un deuxième mode de réalisation de l'invention,
• [Fig. 4] La figure 4 représente une vue schématique en perspective d'un dispositif de calage selon un troisième mode de réalisation de l'invention,
• [Fig. 5] La figure 5 représente une vue schématique en perspective d'un dispositif de calage selon un quatrième mode de réalisation de l'invention,
• [Fig. 6] La figure 6 représente une vue schématique en perspective d'une boîte de conditionnement selon un mode de réalisation.

The invention is now described with reference to the accompanying drawings, which are not limiting, in which:

• [ Fig. 1 ] The figure 1 represents a schematic perspective view of a wedging device according to a first embodiment of the invention,
• [ Fig. 2 ] The figure 2 shows a schematic side view of a variant of the first embodiment,
• [ Fig. 3 ] The figure 3 represents a schematic perspective view of a wedging device according to a second embodiment of the invention,
• [ Fig. 4 ] The figure 4 represents a schematic perspective view of a wedging device according to a third embodiment of the invention,
• [ Fig. 5 ] The figure 5 represents a schematic perspective view of a wedging device according to a fourth embodiment of the invention,
• [ Fig. 6 ] The figure 6 shows a schematic perspective view of a packaging box according to one embodiment.

In the description of the figures, the same elements are designated by the same references.

By substantially parallel or perpendicular is meant a direction / a plane deviating by at most ± 20 °, or even at most 10 ° or at most 5 ° from a direction / plane parallel or perpendicular .

The figure 1 shows a wedging device 1 comprising a plate of cellular cardboard 10 and a plate of corrugated cardboard 20 assembled to the plate of cellular cardboard 10. This assembly can be carried out in the usual manner, for example by gluing, stapling, sewing, interlocking or all other suitable process. In particular, this assembly is irreversible. In other words, the assembled plates cannot be separated without destroying the wedging device.

The cellular cardboard plate 10 comprises two parallel outer sheets of paper 11, 12 between which extend a plurality of sheets of paper 13 erected perpendicular or substantially perpendicular to the two outer sheets 11, 12.

A sheet of cellular cardboard usually has a thickness, measured perpendicular to its outer sheets, of the order of 1 to 10 cm.

The corrugated cardboard plate 20 also includes two parallel outer sheets of paper 21, 22 and one or more inner sheets of paper 23 extending between the outer sheets 21,22. On the other hand, the internal sheet or sheets 23 are fluted (corrugated), the tops and the hollows of the corrugations being in contact with the external sheets 21, 22. Thus, the internal sheet (s) 23 form grooves which extend parallel to the external sheets 21, 22. Some corrugated cardboard sheets 20 may have two or more layers of corrugated inner sheets, the flutes of which extend in a same direction.

A corrugated cardboard sheet usually has a thickness, measured perpendicular to its outer sheets, of the order of 4 to 10 mm.

Due to their structure, the sheets of cellular cardboard and the sheets of corrugated cardboard have different strengths. The direction in which the strength of a sheet of honeycomb board is greatest is the direction perpendicular to its outer sheets. The direction in which the strength of a corrugated board is greatest is the direction of its grooves.

The figure 1 shows an embodiment in which a corrugated cardboard plate 20 is joined to a cellular cardboard plate 10 parallel to the outer sheets thereof. In other words, one of the outer sheets 12 of the honeycomb board 10 is joined to an outer sheet 21 of the corrugated board 20.

In this embodiment, the four edges 20a, 20b, 20c, 20d of the corrugated cardboard plate 20 protrude from a face defined by one of the outer sheets 12 of the cellular cardboard plate 10 in the plane of the plate. corrugated cardboard 20. Thus, in the event of an impact received by the wedging device 1 in a direction contained in a plane parallel to the outer sheets 11, 12, 21, 22, the corrugated cardboard plate 20 will deform before the cellular cardboard plate 10.

Of course, depending on the needs, one, two, three or four edges of the corrugated cardboard plate could protrude from the cellular cardboard plate 10. These can be opposite or contiguous edges. In addition, the corrugated cardboard plate 20 could be positioned so that its grooves extend perpendicular to the sides which it is desired to reinforce. For example, in a variant of the figure 1 , only the edges 20a and 20c (perpendicular to the directions of the grooves) of the corrugated cardboard plate 20 could protrude from the cellular cardboard plate 10.

The embodiment of the figure 1 describes a wedging device 1 comprising a single plate of cellular cardboard 10 and a single plate of corrugated cardboard 20. It is also possible to envisage providing a plate of corrugated cardboard assembled with each of the outer sheets of the plate of cellular cardboard 10.

It is also conceivable to superimpose several plates of cellular cardboard 10 (for example of the same shape and size) and to assemble them to several plates of cellular cardboard 20 (for example of the same shape and size) as for example shown in the view of side of the figure 2 , on only one side of the stack of honeycomb cardboard plates (as shown), or even on both sides.

Numerous variants are thus possible, the wedging device being able to present a corrugated cardboard plate assembled with a stack of honeycomb cardboard plates (on one side of the stack or on both) or even two or more corrugated cardboard plates superimposed. assembled to a single sheet of honeycomb cardboard (on one or both sides).

In the embodiment shown figure 3 , the corrugated cardboard plate 20 is still assembled with an outer sheet 11 of the cellular cardboard plate 10, but its edges 20a, 20b, 20c, 20d are recessed from each of the side faces 10a, 10b, 10c, 10d of the cellular cardboard plate perpendicular to the outer sheets 11, 12. Thus, it is the cellular cardboard plate 10 which will deform first upon impact received in a direction contained in a plane parallel to the outer sheets of the plates.

Numerous variants of this embodiment can also be envisaged: superposition of one or more corrugated cardboard plates, superposition of one or more honeycomb cardboard plates, presence of one or more corrugated cardboard plates assembled to each of the outer sheets of the alveolar plaque.

In the embodiment of the figure 4 , two corrugated cardboard plates 20 are assembled on two side faces 10d and 10c of the cellular cardboard plate 10, this time perpendicular to the outer sheets 11 and 12 of the cellular cardboard plate. The wedging device is then reinforced in a direction perpendicular to the outer sheets 11, 12 of the cellular plate 10.

In the embodiment shown figure 5 , two corrugated cardboard plates 20 are also arranged perpendicular to the outer sheets 11 and 12 of a honeycomb plate but are set back relative to the latter perpendicular to the outer sheets 11, 12.

In this embodiment, the cellular cardboard plate 10 also has two housings 14, 15 for receiving objects. These housings open onto at least one of the external faces of the cardboard plate. These housings can be produced by stamping or by cutting as shown here. They may pass entirely through the honeycomb board or extend from one outer sheet to the other, without however crossing the second outer sheet. When one or more corrugated cardboard plates are assembled to an outer sheet of a cellular cardboard plate, a housing provided therein may also be provided through the corrugated cardboard plate (s). So on the figure 5 , a corrugated cardboard plate 20 "is also provided assembled to the outer sheet 11 of the honeycomb plate 10. This plate 20" is partly set back from the outer sheet 11 of the honeycomb plate 10. In other words, it is moreover small dimensions. In addition, the plate 20 "has two orifices whose edges 214, 215 surround the housings 14, 15 respectively. These edges 214, 215 are recessed, in the plane of the corrugated cardboard plate 20", from the edges 114, 115 housings 14, 15 located on the outer sheet of the cellular plate 10. Thus, if the object contained in one of these housings undergoes a sudden movement in a direction parallel to the plane of the plate 20 ", this movement will be slowed down in two stages, first by the cellular cardboard plate 10, then by the corrugated cardboard plate 20 ", thus further absorbing the shocks undergone by this object during its movement. In the example, a single sheet of corrugated cardboard 20 "is provided whose edges 214, 215 are recessed from the edges 114 and 115, these edges could however be protruding. Further, the invention is not limited by the number of corrugated cardboard plates. One could in particular provide a corrugated cardboard plate 20 "assembled to the other outer sheet of the cellular plate, or several corrugated cardboard plates superimposed and assembled to one of the outer sheets or to the two outer sheets, each with an edge recessed or protruding from the edge 114, 115 of the housing for damping in several stages of an impact. Finally, if two or more honeycomb cardboard plates are present and superimposed, one or more housings provided on one of the plates can communicate with corresponding housings of the adjacent plates. These different variants can be combined and provided for in the different embodiments described, alone or in combination.

Of course, many variants of the embodiments described with reference to figures 4 and 5 are possible, the wedging device being able to have one or more superimposed cellular cardboard plates, one or more superimposed corrugated cardboard plates, assembled to one or more side faces of the cellular cardboard plate, and one or more housings, according to n ' any combination.

The various embodiments described and their variations can furthermore be combined in any combination with suitable dimensions of the corrugated cardboard sheets. For example, it is understood that the embodiments of figures 3 , 4 and 5 can easily be combined while the embodiments of figures 1 and 4 are not compatible because the corrugated cardboard plate perpendicular to the outer sheets of the honeycomb cardboard plate, on the left of it on the figure 4 protrudes from the outer sheet 12 on the same side as the plate 20 of the figure 1 . Those skilled in the art will be able to modify the dimensions of the corrugated cardboard plates so that after assembly with contiguous faces of one or more plates of cellular cardboard, these corrugated cardboard plates do not intersect.

The wedging device according to the invention is intended to be introduced inside a cardboard packaging, as shown. figure 6 .

On this figure 6 , there is a packaging box 30 comprising a cardboard packaging 40 and a wedging device 1 according to the invention. The cardboard packaging 40, here in a closed state and partially shown so that the interior can be distinguished, comprises six walls 41-46 defining a parallelepipedal enclosure. This packaging 40 can be made of any type of cardboard, in particular corrugated cardboard.

In the example shown, the package 40 comprises side walls 41-44 hinged together by parallel fold lines so that these walls form a belt, bottom parts hinged on the side walls by fold lines (here a bottom part hinged to each side wall) and fixed to each other to form the bottom 45, the side walls 41-44 being raised relative to the bottom 45, each side wall 41-44 being provided , on the side opposite to the bottom parts, a flap hinged to the side wall by a fold line, the flaps being fixed to each other to form the wall 46 and close the package.

In the example, the side walls 41-44 are solid walls, devoid of slots and / or orifices, against which the wedging device 1 bears. In particular, in the example, the edges 20a, 20b, 20c, 20d of an upper corrugated cardboard plate 20 and the edges 20'a, 20'b, 20'c, 20'd of a lower corrugated cardboard plate 20 'of the wedging device 1 bear against the side walls 41-44. These edges protrude from the honeycomb board 10 in the planes of the corrugated boards 20, 20 'so that upon impact received on one of the side walls 41-44, the corrugated boards 20, 20 'will absorb the shock first by deforming, the cellular cardboard plate 10 absorbing the shock second. As already explained, this two-stage damping can also be obtained by producing corrugated cardboard plates 20, 20 'set back from the faces of the cellular cardboard plate 10, in other words of smaller dimension than the latter.

It is thus understood that the present invention, by assembling a cellular cardboard plate and a corrugated cardboard plate of different dimensions, makes it possible to produce a wedging device capable of absorbing shocks in two or more stages, improving the protection provided by the wedging device. . This improvement in protection can be obtained for use of the wedging device inside a packaging made of cardboard or any other material.

Claims (10)

Packaging box (30) comprising: - a cardboard packaging (40), in particular in a closed state, comprising walls (41-46) defining a parallelepipedal enclosure, - a wedging device (1) of an object resting against at least one wall of the packaging comprising: - at least one cellular cardboard plate (10) comprising two parallel outer sheets of paper (11, 12) between which extend a plurality of sheets of paper (13) standing perpendicular or substantially perpendicular to the two outer sheets (11, 12) ), - at least one corrugated cardboard plate (20) comprising two parallel outer sheets of paper (21, 22) between which extends at least one corrugated sheet (23), and in which: - said at least one corrugated cardboard plate (20) is assembled by one of its outer sheets (21, 22) to said at least one cellular cardboard plate (10), and - said at least one corrugated cardboard plate (20) has, in a plane parallel to its outer sheets (21, 22), at least one edge (20a, 20b, 20c, 20d) which protrudes or is set back from a face of said at least one plate of cellular cardboard. A packaging box (30) according to claim 1, wherein said at least one corrugated cardboard plate (20) of the wedging device (1) extends parallel or substantially parallel to the outer sheets (11, 12) of said at least a sheet of honeycomb cardboard (10). A packaging box (30) according to claim 2, wherein at least one corrugated cardboard plate (20) of the wedging device (1) is joined to each outer sheet (11, 12) of said at least one cellular cardboard plate. (10). A packaging box (30) according to any one of claims 1 to 3, wherein at least one corrugated cardboard plate (20) of the wedging device (1) extends perpendicular or substantially perpendicular to the outer sheets (11, 12 ) of the honeycomb cardboard plate (10). A packaging box (30) according to claim 4, wherein at least one corrugated cardboard plate (20) of the wedging device (1) is assembled to each face of said at least one plate of cellular cardboard (10) perpendicular to its outer sheets (11, 12). Packaging box (30) according to any one of claims 1 to 5, in which the wedging device (1) comprises at least two sheets of cellular cardboard (10) superimposed and assembled, in particular of the same shape and size. Packaging box (30) according to any one of claims 1 to 6, in which the wedging device (1) comprises at least two corrugated cardboard sheets (20) superimposed and assembled, in particular of the same shape and size. Packaging box (30) according to any one of claims 1 to 7, wherein said at least one cardboard plate (10) of the wedging device (1) has at least one housing (14, 15) produced by stamping or cutting. Packaging box (30) according to claim 8, wherein the wedging device comprises at least one corrugated cardboard plate assembled to an outer sheet of a cellular plate onto which opens said at least one housing and said at least one plate. corrugated cardboard has, in a plane defined by its outer sheets, an orifice having an edge set back or projecting from an edge of said at least one housing. A packaging box (30) according to any one of the preceding claims, wherein said at least one sheet of corrugated cardboard, at least one edge of which protrudes or is recessed from one face of said at least one plate of cellular cardboard, extends perpendicularly to at least one wall of the packaging, the wedging device being supported at least against this wall.

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