Device for wedging an object made of cellular cardboard and corrugated cardboard and corresponding packaging box

Abstract

The invention relates to a securing device (1) for an object comprising: - at least one honeycomb cardboard sheet (10) comprising two parallel outer sheets of paper (11, 12) between which extend a plurality of paper sheets (13) arranged perpendicularly or substantially perpendicularly to the two outer sheets, - at least one corrugated cardboard sheet (20) comprising two parallel outer sheets of paper (21, 22) between which extends at least one fluted sheet (23). Said at least one corrugated cardboard sheet (20) is joined by one of its outer sheets (21, 22) to said at least one honeycomb cardboard sheet (10). In addition, said at least one corrugated cardboard sheet (20) has, in a plane parallel to its outer sheets (21, 22), at least one edge that extends beyond or is recessed from one face of said at least one honeycomb cardboard sheet.

Description

[0001] The invention relates to a device for wedging objects made of honeycomb and corrugated cardboard and a packaging box receiving this wedging device. Transporting objects requires the use of wedging devices in order to avoid deterioration of the transported object. Currently, wedging devices are made of polystyrene, which has the advantage of being light, easy to mold and not very abrasive. As environmental concerns become increasingly important, manufacturers are seeking to replace this material with another, more environmentally friendly material. Some wedging devices made of molded cellulose have thus been developed. This material, which is essentially made from recycled paper and water, nevertheless has the disadvantage of being heavy, difficult to mold into complex shapes, abrasive and generates dust. In addition, it absorbs shocks poorly and the existing production capacity is insufficient to cover market needs.It is also possible to use crumpled paper, but this does not always provide good cushioning for the most fragile objects.

[0002] Wedging devices made of honeycomb cardboard are also known. The latter is formed of two parallel sheets of paper between which a plurality of sheets of paper are placed substantially perpendicular to the two parallel sheets of paper. Honeycomb cardboard, 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 embossed (crushed) perpendicular to the planes of the parallel sheets of paper in order to accommodate an object. This embossing makes the honeycomb cardboard elastic, promoting shock absorption, but reduces the overall strength of the honeycomb cardboard.It is also necessary to protect the objects to be wedged against abrasion, particularly when they are in contact with the edges of a hollowed-out or stamped part of a honeycomb cardboard sheet.

[0003] Finally, corrugated cardboard can also be used, but its impact resistance and shock absorption capacity are relatively limited. In addition, its edges are also abrasive, requiring additional protection for the object to be wedged.

[0004] Document KR2011 0010366A describes a dunnage system made of honeycomb cardboard, corrugated cardboard and having steel honeycomb structures. This document discloses the preamble of claim 1.

[0005] The invention aims to resolve all or part of the aforementioned drawbacks.

[0006] For this purpose, the invention relates to a packaging box as defined in claim 1 comprising a cardboard packaging and a device for wedging an object, intended to be positioned inside the cardboard packaging, in particular in a closed state, of the packaging box, bearing against at least one wall of the packaging. Such a cardboard packaging comprises walls defining a parallelepiped enclosure.

[0007] This wedging device includes: at least one sheet of honeycomb cardboard comprising two parallel outer sheets of paper between which extend a plurality of sheets of paper erected perpendicularly or substantially perpendicularly to the two outer sheets, at least one sheet of corrugated cardboard comprising two parallel outer sheets of paper between which extends at least one fluted sheet, and in which: said at least one sheet of corrugated cardboard is assembled by one of its outer sheets to said at least one sheet of honeycomb cardboard, and said at least one sheet of corrugated cardboard has, in a plane parallel to its outer sheets, at least one edge which protrudes from or is set back from one face of said at least one sheet of honeycomb cardboard.

[0008] Thus, when one or more corrugated cardboard sheets assembled to the honeycomb cardboard sheet have(s) at least one edge which protrudes from one face of the honeycomb cardboard sheet(s), an impact sustained parallel to the corrugated cardboard sheet(s) is received by the edge(s) of the corrugated cardboard sheet(s) and not by the honeycomb cardboard sheet(s), so that the latter are protected.

[0009] Similarly, when one or more corrugated cardboard sheets assembled to the honeycomb cardboard sheet have(s) at least one edge set back from one face of the honeycomb cardboard sheet(s), an impact sustained parallel to the corrugated cardboard sheet(s) is received by the honeycomb cardboard sheet(s) and not by the edge(s) of the corrugated cardboard sheet(s), so that the latter are protected.

[0010] 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 impacts received.

[0011] It is thus understood that it will be 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(s) and assembled to the honeycomb cardboard plate or plates. In one embodiment, said at least one corrugated cardboard plate may extend parallel or substantially parallel to the outer sheets of the honeycomb cardboard plate. In this case, the strength of the wedging device is improved parallel to the outer sheets of the honeycomb cardboard plate.

[0012] In a variant, for better impact protection, at least one corrugated cardboard sheet can be assembled to each outer sheet of said at least one honeycomb cardboard sheet.

[0013] In another embodiment, which can be combined with the previous embodiment, at least one corrugated cardboard plate can extend perpendicularly or substantially perpendicularly to the outer sheets of the honeycomb cardboard plate. In this case, the strength of the wedging device is improved perpendicular to the outer sheets of the honeycomb cardboard plate.

[0014] In a variant, for better impact protection, at least one corrugated cardboard sheet can be assembled on each face of said at least one honeycomb cardboard sheet perpendicular to its external sheets.

[0015] The two embodiments described and their variants can be combined in any combination depending on the desired strength, the only limitation being that corrugated cardboard sheets extending perpendicular to each other cannot both protrude from two contiguous faces of the honeycomb cardboard sheet(s).

[0016] Generally speaking, to improve its resistance perpendicular to the external sheets of the honeycomb cardboard plate(s), the wedging device may comprise at least two honeycomb cardboard plates superimposed and assembled, in particular of the same shape and size.

[0017] Generally speaking, to improve its resistance in parallel with the corrugated cardboard plates, the wedging device may comprise at least two superimposed and assembled corrugated cardboard plates, in particular of the same shape and size.

[0018] According to the invention, said at least one honeycomb cardboard plate has 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 external sheets of said at least one honeycomb plate, and possibly passes through one or more corrugated cardboard plates assembled to the at least one external sheet. Advantageously, superimposed honeycomb cardboard plates may have one or more communicating housings.

[0019] According to the invention, the wedging device comprises at least one corrugated cardboard sheet assembled to an outer sheet of a honeycomb sheet into which said at least one housing opens, and said at least one corrugated cardboard sheet has, in the plane of said at least one corrugated cardboard sheet, namely in a plane defined by the outer sheets thereof, an orifice having an edge recessed or projecting from an edge of said at least one housing so as to provide two-stage damping in the plane of said at least one corrugated cardboard sheet. When two or more corrugated cardboard sheets are assembled to this outer sheet of the honeycomb sheet, they may be of the same size at the edge of the housing or of different sizes from each other.This or these corrugated cardboard sheets may furthermore be at least one corrugated cardboard sheet having, in a plane parallel to its external sheets, at least one edge which protrudes from or is set back from one face of said at least one honeycomb cardboard sheet.

[0020] The invention also comprises a packaging box comprising: a cardboard packaging, in particular in a closed state, comprising walls defining a parallelepiped enclosure, a wedging device according to the invention arranged inside the packaging and bearing against at least one wall of the packaging.

[0021] The wedging device being in contact with at least one wall of the packaging, it is understood that a shock suffered by this wall of the packaging will be transmitted to the wedging device and may be absorbed in two or more stages due to the different dimensions of the corrugated cardboard plate(s) and the honeycomb cardboard plate(s) of the wedging device.

[0022] Preferably, for better protection, the walls of the packaging may be solid walls, without slots or holes.

[0023] According to the invention, for more effective cushioning, said at least one corrugated cardboard plate, at least one edge of which protrudes from or is set back from one face of said at least one honeycomb cardboard plate, extends perpendicular to at least one wall of the packaging, the wedging device bearing at least against this wall, and optionally against the opposite wall and / or against the one or two other walls perpendicular to said at least one corrugated cardboard plate. This makes it possible to ensure rapid transmission of a shock received by one or more walls of the packaging to the wedging device.

[0024] The packaging being parallelepipedal in shape, a wedging device may rest against four side walls opposite each other 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 from or is set back from one face of said at least one honeycomb cardboard plate, which extends perpendicular to these side walls.

[0025] In all embodiments, the wedging device may rest on a bottom wall of the packaging, its honeycomb cardboard plate(s) being preferably arranged parallel or perpendicular to this bottom wall.

[0026] The invention is now described with reference to the accompanying non-limiting drawings, in which: [ Fig. 1 ] There figure 1 represents a schematic perspective view of a wedging device according to a first embodiment, [ Fig. 2 ] There figure 2 represents a schematic side view of a variant of the first embodiment, [ Fig. 3 ] There figure 3 represents a schematic perspective view of a wedging device according to a second embodiment, [ Fig. 4 ] There figure 4 represents a schematic perspective view of a wedging device according to a third embodiment, [ Fig. 5 ] There figure 5 represents a schematic perspective view of a wedging device according to a fourth embodiment of the invention, [ Fig. 6 ] There figure 6 represents a schematic perspective view of a packaging box according to one embodiment.

[0027] In the description of the figures, the same elements are designated by the same references.

[0028] By substantially parallel or perpendicular is meant a direction / plane deviating by at most ±20°, or even at most 10° or at most 5° from a parallel or perpendicular direction / plane.

[0029] There figure 1 represents a wedging device 1 comprising a honeycomb cardboard plate 10 and a corrugated cardboard plate 20 assembled to the honeycomb cardboard plate 10. This assembly can be carried out in the usual manner, for example by gluing, stapling, sewing, nesting or any other suitable method. In particular, this assembly is irreversible. In other words, the assembled plates cannot be separated without destroying the wedging device.

[0030] The honeycomb cardboard plate 10 comprises two parallel outer sheets of paper 11, 12 between which extend a plurality of sheets of paper 13 erected perpendicularly or substantially perpendicularly to the two outer sheets 11, 12.

[0031] A sheet of honeycomb cardboard usually has a thickness, measured perpendicular to its external sheets, of the order of 1 to 10 cm.

[0032] The corrugated cardboard sheet 20 also comprises two parallel outer sheets of paper 21, 22 and one or more inner sheets of paper 23 extending between the outer sheets 21, 22. In contrast, the inner sheet(s) 23 are fluted (corrugated), with the peaks and valleys of the corrugations in contact with the outer sheets 21, 22. Thus, the inner sheet(s) 23 form flutes that extend parallel to the outer sheets 21, 22. Some corrugated cardboard sheets 20 may comprise two or more tiers of corrugated inner sheets, the flutes of which extend in a common direction.

[0033] A corrugated cardboard sheet usually has a thickness, measured perpendicular to its external sheets, of the order of 4 to 10 mm.

[0034] Due to their structure, honeycomb and corrugated cardboard sheets have different strengths. The direction in which the strength of a honeycomb sheet is highest is the direction perpendicular to its outer sheets. The direction in which the strength of a corrugated cardboard sheet is highest is the direction of its flutes.

[0035] There figure 1 represents an embodiment in which a corrugated cardboard sheet 20 is assembled to a honeycomb cardboard sheet 10 parallel to the outer sheets thereof. In other words, one of the outer sheets 12 of the honeycomb cardboard sheet 10 is assembled to an outer sheet 21 of the corrugated cardboard sheet 20.

[0036] In this embodiment, the four edges 20a, 20b, 20c, 20d of the corrugated cardboard sheet 20 protrude from a face defined by one of the external sheets 12 of the honeycomb cardboard sheet 10 in the plane of the corrugated cardboard sheet 20. Thus, in the event of an impact received by the wedging device 1 in a direction contained in a plane parallel to the external sheets 11, 12, 21, 22, the corrugated cardboard sheet 20 will deform before the honeycomb cardboard sheet 10.

[0037] Of course, depending on the requirements, one, two, three or four edges of the corrugated cardboard sheet could protrude from the honeycomb cardboard sheet 10. These may be opposite or contiguous edges. In addition, the corrugated cardboard sheet 20 could be positioned so that its grooves extend perpendicular to the sides that are to be reinforced. 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 honeycomb cardboard plate 10.

[0038] The method of realization of the figure 1 describes a wedging device 1 comprising a single honeycomb cardboard plate 10 and a single corrugated cardboard plate 20. It is also possible to envisage providing a corrugated cardboard plate assembled to each of the external sheets of the honeycomb cardboard plate 10. It is also possible to envisage superimposing several honeycomb cardboard plates 10 (for example of the same shape and size) and assembling them to several honeycomb cardboard plates 20 (for example of the same shape and size) as for example shown in the side view of the figure 2 , on one side of the stack of honeycomb cardboard plates (as shown), or even on both sides.

[0039] Many variants are thus conceivable, the wedging device being able to have a corrugated cardboard sheet assembled to a stack of honeycomb cardboard sheets (on one of the faces of the stack or both) or even two or more superimposed corrugated cardboard sheets assembled to a single honeycomb cardboard sheet (on one of its faces or both).

[0040] In the embodiment shown figure 3 , the corrugated cardboard plate 20 is always assembled to an external sheet 11 of the honeycomb cardboard plate 10, but its edges 20a, 20b, 20c, 20d are set back from each of the lateral faces 10a, 10b, 10c, 10d of the honeycomb cardboard plate perpendicular to the external sheets 11, 12. Thus, it is the honeycomb cardboard plate 10 which will deform first during an impact received in a direction contained in a plane parallel to the external sheets of the plates.

[0041] Many variants of this embodiment are also conceivable: superposition of one or more corrugated cardboard sheets, superposition of one or more honeycomb cardboard sheets, presence of one or more corrugated cardboard sheets assembled to each of the external sheets of the honeycomb sheet.

[0042] In the embodiment of the figure 4 , two corrugated cardboard plates 20 are assembled on two side faces 10d and 10c of the honeycomb cardboard plate 10, this time perpendicular to the external sheets 11 and 12 of the honeycomb cardboard plate. The wedging device is then reinforced in a direction perpendicular to the external sheets 11, 12 of the honeycomb plate 10.

[0043] In the embodiment shown figure 5 , two corrugated cardboard plates 20 are also arranged perpendicular to the external sheets 11 and 12 of a honeycomb plate but are set back from the latter perpendicular to the external sheets 11, 12.

[0044] In this embodiment, the honeycomb cardboard sheet 10 also has two housings 14, 15 for receiving objects. These housings open onto at least one of the external faces of the honeycomb cardboard sheet. These housings can be made by stamping or by cutting as shown here. They can pass entirely through the honeycomb cardboard sheet or extend from one external sheet to the other, without however passing through the second external sheet. When one or more corrugated cardboard sheets are assembled to an external sheet of a honeycomb cardboard sheet, a housing formed therein can also be provided through the corrugated cardboard sheet(s). Thus, on the figure 5 , a 20" corrugated cardboard plate is also provided assembled to the outer sheet 11 of the honeycomb plate 10. This 20" plate is partly set back from the outer sheet 11 of the honeycomb plate 10. In other words, it is of smaller dimensions. Furthermore, the 20" plate has two orifices whose edges 214, 215 surround the housings 14, 15 respectively. These edges 214, 215 are set back, in the plane of the 20" corrugated cardboard plate, from the edges 114, 115 of the housings 14, 15 located on the outer sheet of the honeycomb plate 10. Thus, if the object contained in one of these housings undergoes a sudden displacement in a direction parallel to the plane of the 20" plate, this displacement will be slowed down in two stages, first by the 10 corrugated cardboard plate, then by the 20" corrugated cardboard plate, thus further absorbing the shocks suffered by this object during its displacement.In the example, a single 20" corrugated cardboard sheet is provided, the edges 214, 215 of which are set back from the edges 114 and 115; however, these edges could be projecting. Furthermore, the invention is not limited by the number of corrugated cardboard sheets. In particular, one could provide a 20" corrugated cardboard sheet assembled to the other outer sheet of the honeycomb sheet, or several superimposed corrugated cardboard sheets assembled to one of the outer sheets or to both outer sheets, each with an edge set back or projecting from the edge 114, 115 of the housing for multi-stage shock absorption. Finally, if two or more honeycomb cardboard sheets are present and superimposed, one or more housings provided on one of the sheets can communicate with corresponding housings on adjacent sheets. These different variants can be combined and provided on the different embodiments described, alone or in combination.

[0045] Of course, many variations of the embodiments described with reference to the figures 4 et 5 are conceivable, the wedging device being able to have one or more superimposed honeycomb cardboard plates, one or more superimposed corrugated cardboard plates, assembled to one or more lateral faces of the honeycomb cardboard plate, and one or more housings, according to any combination.

[0046] The various embodiments described and their variants may further be combined in any combination with suitable dimensions of the corrugated cardboard sheets. For example, it is understood that the embodiments of the figures 3 , 4 et 5 can easily be combined while the embodiments of the figures 1 And 4are not compatible because the corrugated cardboard sheet is perpendicular to the outer sheets of the honeycomb cardboard sheet, on the left of the latter on the figure 4 is projecting from the outer sheet 12 on the same side as the plate 20 of the figure 1 . A person skilled in the art will be able to modify the dimensions of the corrugated cardboard sheets so that after assembly to contiguous faces of one or more honeycomb cardboard sheets, these corrugated cardboard sheets do not cross.

[0047] The wedging device according to the invention is intended to be introduced inside a cardboard packaging, as shown figure 6 .

[0048] On this figure 6, a packaging box 30 is distinguished 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 its interior can be seen, comprises six walls 41-46 defining a parallelepiped enclosure. This packaging 40 can be made of any type of cardboard, in particular corrugated cardboard.

[0049] In the example shown, the packaging 40 comprises side walls 41-44 hinged together by parallel fold lines so that these walls form a belt, bottom parts hinged to 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 erected relative to the bottom 45, each side wall 41-44 being provided, on the side opposite the bottom parts, with 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 packaging.

[0050] 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 cardboard plate 10 into the planes of the corrugated cardboard plates 20, 20' so that when an impact is received on one of the side walls 41-44, the corrugated cardboard plates 20, 20' will absorb the impact first by deforming, the honeycomb cardboard plate 10 absorbing the impact in a second step.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 honeycomb cardboard plate 10, in other words of smaller dimensions than the latter.

[0051] It is thus understood that the present invention, by assembling a honeycomb cardboard sheet and a corrugated cardboard sheet 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 cardboard packaging or any other material.

Claims

1. A packaging box (30) comprising: - a cardboard package (40), in particular in a closed state, comprising walls (41-46) defining a parallelepipedal enclosure, - a device (1) for wedging an object in abutment against at least one wall of the package, comprising: - at least one sheet of honeycomb board (10) comprising two parallel outer paper sheets (11, 12) between which extend a plurality of paper sheets (13) laid perpendicularly or substantially perpendicularly to the two outer sheets (11, 12), - at least one sheet of corrugated board (20) comprising two parallel outer paper sheets (21, 22) between which at least one fluted sheet (23) extends, and wherein: - said at least one sheet of corrugated board (20) is assembled by one of its outer sheets (21, 22) to said at least one sheet of honeycomb board (10), and - said at least one sheet of corrugated board (20) has, in a plane parallel to its outer sheets (21, 22), at least one edge (20a, 20b, 20c, 20d) which protrudes or is recessed from a face of said at least one sheet of honeycomb board, characterised in that said at least one sheet of corrugated board (20), at least one edge (20a, 20b, 20c, 20d) of which protrudes or is recessed from a face of said at least one sheet of honeycomb board (10), extends perpendicularly to at least one wall of the package, the wedging device (1) being in abutment at least against this wall, said at least one sheet of honeycomb board (10) of the wedging device (1) has at least one housing (14, 15) made by stamping or cutting, and the wedging device (1) comprises at least one sheet of corrugated board (20") connected to an outer sheet (11) of a honeycomb sheet (10) on which said at least one housing (14, 15) opens and said at least one sheet of corrugated board (20") has, in a plane defined by its outer sheets, an orifice (214, 215) having an edge recessed or projecting from an edge (114, 115) of said at least one housing (14, 15).

2. Packaging box (30) according to claim 1, wherein said at least one sheet of corrugated board (20) of the wedging device (1) extends parallel or substantially parallel to the outer sheets (11, 12) of said at least one sheet of honeycomb board (10).

3. Packaging box (30) according to claim 2, wherein at least one sheet of corrugated board (20) of the wedging device (1) is connected to each outer sheet (11, 12) of said at least one sheet of honeycomb board (10).

4. Packaging box (30) according to any one of claims 1 to 3, wherein at least one sheet of corrugated board (20) of the wedging device (1) extends perpendicularly or substantially perpendicularly to the outer sheets (11, 12) of the sheet of honeycomb board (10).

5. Packaging box (30) according to claim 4, wherein at least one sheet of corrugated board (20) of the wedging device (1) is connected to each face of said at least one the sheet of honeycomb board (10) perpendicular to its outer sheets (11, 12).

6. Packaging box (30) according to any one of claims 1 to 5, wherein the wedging device (1) comprises at least two superimposed and assembled sheets of honeycomb board (10), in particular of the same shape and size.

7. Packaging box (30) according to any one of claims 1 to 6, wherein the wedging device (1) comprises at least two sheets of corrugated board (20) superimposed and assembled, in particular of the same shape and size.

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