Cardboard box comprising a box bottom and a lid provided with corner reinforcements, box blank and method for producing same
Patent Information
- Application Number
- PCT/EP2026/054102
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-28
- Filing Date
- 2026-02-16
- Publication Date
- 2026-09-03
Smart Images
Figure EP2026054102_03092026_PF_FP_ABST
Abstract
Description
[0001] DESCRIPTION
[0002] Title: Cardboard box comprising a base and a lid with corner reinforcements
[0003] 1. Scope of the invention
[0004] The field of the invention is that of the design and manufacture of cardboard boxes used for the storage and transport of various products, including foodstuffs.
[0005] 2. Prior art
[0006] Cardboard boxes are commonly used for the storage and / or transport of various items such as food products.
[0007] Such crates can be stacked on top of each other in successive layers of one or more crates each, for example on pallets.
[0008] This principle has the advantage of allowing a large number of crates to be transported in a small space. However, it also has drawbacks.
[0009] In particular, the boxes forming the lower layers of a stack of boxes support the weight of the layers above. Thus, the further one moves from the final top layer of a stack of cardboard boxes, the greater the vertical compressive force (orthogonal to the bottom of the boxes) to which the boxes are subjected.
[0010] This compression force can be such that the crates of the lower layers tend to deform, which can lead to deterioration of the products they contain and weaken the entire stack, which risks collapsing over time.
[0011] Furthermore, for both ecological and economic reasons, it is desirable to be able to produce compression-resistant crates whose manufacture requires less raw material. However, the compression resistance of a crate is generally linked to the amount of cardboard it contains, particularly the thickness of the cardboard used to manufacture the crate.
[0012] There is therefore a need to provide more environmentally friendly and economical cardboard boxes which nevertheless have significant compression resistance.
[0013] 3. Objectives of the invention
[0014] The invention aims in particular to provide an effective solution to at least some of these different problems. In particular, according to at least one embodiment, an objective of the invention is to optimize the vertical compression resistance of cardboard boxes.
[0015] Another objective of the invention is, according to at least one embodiment, to provide such a box which is simple in design.
[0016] Another objective of the invention is, according to at least one embodiment, to provide such a box which is economical.
[0017] Another objective of the invention is, according to at least one embodiment, to provide such a box which benefits from significant compressive strength while requiring less raw material to make it.
[0018] 4. Presentation of the invention
[0019] To achieve this, the invention proposes a cardboard box comprising:
[0020] - a cash register base comprising a back wall and four consecutive sides connected in pairs by angles, said back wall and said sides delimiting a storage area for contents, and
[0021] - a lid suitable for cooperating with said cash register base to close said storage area.
[0022] According to the invention, each of said corners of said bottom of the box comprises a chamfered face orthogonal to said bottom wall such that said bottom of the box presents an octagonal section, in a plane parallel to said bottom wall, said lid having, at each of its corners, a corner reinforcement orthogonal to said bottom wall, each of said corner reinforcements being shaped to fit, when said lid cooperates with said bottom of the box, into a space delimited by said chamfered face of the corresponding corner of said bottom of the box and the planes of the two consecutive sides adjacent to said corresponding chamfered face,
[0023] each of said corner reinforcements of said cover comprising three fold lines orthogonal to said bottom wall defining an essentially triangular corner reinforcement section in a plane parallel to said bottom wall of said bottom of box.
[0024] Thus, according to this aspect, the invention provides a box whose bottom has an octagonal section, in a plane parallel to the bottom wall, and thus delimits at each corner a space capable of receiving a corner reinforcement of triangular section in a plane parallel to the bottom wall formed at each corner of a lid.
[0025] This architecture provides a body reinforced against vertical compression, as each corner of the assembly consisting of the bottom of the body and the lid has five folds orthogonal to the wall of the bottom of the body, constituting reinforcements against vertical compression when the body rests on a horizontal surface.
[0026] Thus, the technique according to the invention makes it possible to improve the compression resistance of a cardboard box by providing corner reinforcements both on the bottom of the box and on its lid.
[0027] Thus, for the same amount of cardboard used to make a crate (bottom and lid), its vertical compression resistance is significantly improved, or for a smaller amount of cardboard used to make a crate (bottom and lid), its vertical compression resistance is maintained. A compromise between these two approaches makes it possible to produce an environmentally friendly and durable crate using less cardboard but still benefiting from superior vertical compression resistance.
[0028] According to one possible characteristic, each of said chamfered corners of said bottom of the case comprises:
[0029] - a first corner flap of the bottom of the box formed, along a folding line orthogonal to said bottom wall, in the extension of a first side flap forming a first side of said bottom of the box, and
[0030] - a second bottom corner flap formed, along a folding line orthogonal to said bottom wall, in the extension of a second side flap forming a second side of said bottom of box consecutive to said first side, and said first and second bottom corner flaps overlapping at least on a portion of their length.
[0031] According to one possible feature, each of said chamfered corners of said bottom of the box comprises a first corner flap of the bottom of the box formed, along a first fold line orthogonal to said bottom wall, in the extension of a first side flap forming a first side of said bottom of the box, and extending, from a second fold line orthogonal to said bottom wall, by a second corner flap of the bottom of the box applied against a second side flap forming a second side of said bottom of the box consecutive to said first side. According to one possible feature, said second side flap comprises an end folded at 180° against said corresponding second side.
[0032] According to one possible feature, each of said corner cuts of said bottom of box includes a third corner flap of bottom of box formed in the extension of a bottom wall flap forming said bottom wall of said bottom of box, said third corner flap of bottom of box being folded, along a fold line parallel to said bottom wall, against said first and / or said second corner flap of bottom of box internally or externally to said storage area.
[0033] According to one possible characteristic, at least one of said sides of said bottom of the box includes at least one side reinforcement extending perpendicularly to said bottom wall.
[0034] According to one possible characteristic, two opposite sides of said bottom of the box include at least one side reinforcement.
[0035] According to one possible feature, two opposite sides of said bottom of the box each include two side reinforcements.
[0036] According to one possible characteristic, said at least one side reinforcement is formed of a side reinforcement flap extending in the continuation of a bottom corner flap formed in the continuation of a side flap forming a first side of said bottom, and is formed against a second side of said bottom consecutive to said first side.
[0037] According to one possible characteristic, said at least one side reinforcement has an essentially triangular section in a plane parallel to said bottom wall.
[0038] According to one possible characteristic, at least one side reinforcement has an essentially partially circular cross-section in a plane parallel to said bottom wall.
[0039] According to one possible feature, a crate according to the invention comprises two large opposite sides, each comprising at least one side reinforcement, and two small opposite sides, the length of said large and small sides being chosen, and said at least one side reinforcement being arranged along said corresponding large side, in such a way that when two crates are stacked end-to-end one on top of the other while being pivoted about 90° relative to each other along an axis orthogonal to said bottom wall of said crates, continuous uninterrupted reinforcement pillars are formed by the alignment of corner reinforcements of said stacked crates on the one hand and by the alignment of side reinforcements and corner reinforcements of said stacked crates on the other hand.
[0040] According to one possible feature, a box according to the invention comprises two large opposite sides of equal length L, each comprising two side reinforcements, and two small opposite sides of equal length I, each of said large sides comprising a first side reinforcement disposed at a distance between 0.81 and 1.21 from a first of said small sides and a second side reinforcement disposed at a distance between 0.81 and 1.21 from a second of said small sides.
[0041] The invention also relates to a box blank for the production of a box according to the invention, comprising:
[0042] - a bottom panel comprising a bottom wall flap, four side flaps capable of forming consecutive sides connected in pairs by angles, said bottom wall and said sides being capable of delimiting a storage area for contents, and corner reinforcement flaps capable of forming a chamfered edge orthogonal to said bottom wall at each of said corners of said bottom panel in such a way that said bottom panel has an octagonal cross-section, in a plane parallel to said bottom wall,
[0043] - a lid blank suitable for forming a lid that cooperates with said base to close said storage area, said lid blank comprising a lid wall flap, four lid side flaps and corner reinforcement flaps suitable for forming, at each of said corners of said lid, a corner reinforcement orthogonal to said base wall, said corner reinforcements being shaped to fit, when said lid cooperates with said base, into a space delimited by said chamfered edge of the corresponding corner of said base and the planes of the two consecutive sides adjacent to said corresponding chamfered edge,
[0044] said corner reinforcement flaps of said cover comprising three folding lines orthogonal to said bottom wall so as to define an essentially triangular corner reinforcement section in a plane parallel to said bottom wall of said bottom of box.
[0045] The invention also relates to a method for making a crate according to the invention, comprising: - a step of making a crate base comprising a bottom wall and four consecutive sides connected in pairs by angles, said bottom wall and said sides delimiting a storage area for contents, and
[0046] - a step of producing a lid capable of cooperating with said bottom of the crate to close said storage area;
[0047] each of the said angles of the said bottom of the box comprising a chamfered edge orthogonal to the said bottom wall in such a way that the said bottom of the box presents an octagonal section, in a plane parallel to the said bottom wall,
[0048] said lid having, at each of its corners, a corner reinforcement orthogonal to said bottom wall, each of said corner reinforcements being shaped to fit, when said lid cooperates with said bottom of the box, into a space delimited by said chamfered edge of the corresponding corner of said bottom of the box and the planes of the two consecutive sides adjacent to said corresponding chamfered edge,
[0049] each of said corner reinforcements of said cover comprising three fold lines orthogonal to said bottom wall defining an essentially triangular corner reinforcement section in a plane parallel to said bottom wall of said bottom of box.
[0050] 5. Description of the figures
[0051] Other features and advantages of the invention will become apparent from the following description of particular embodiments, given by way of simple illustration and not limitation, and the accompanying drawings, among which:
[0052] [Fig 1] Figure 1 illustrates a perspective view of an example of the realization of a box according to the invention;
[0053] [Fig 2] Figure 2 illustrates a perspective view of the cash drawer of the cash drawer in Figure 1;
[0054] [Fig 3] Figure 3 illustrates a blank for making a cash register base in Figure 3;
[0055] [Fig 4] Figure 4 illustrates a perspective view of a lid of the box in Figure 1;
[0056] [Fig 5] [Fig 6] [Fig 7] [Fig 8] [Fig 9] Figures 5, 6, 7, 8 and 9 illustrate different partial perspective views of different kinds of beveled corner reinforcement of a bottom of a box according to the invention;
[0057] [Fig 10] Figure 10 illustrates a cross-sectional view, along a side parallel to the bottom wall of a reinforced side floor of a box according to Figure 1; [Fig 11] Figure 11 illustrates different variants of side reinforcement sections of a box floor according to the invention;
[0058] [Fig 12] Figure 12 illustrates an example of a lid blank according to the invention;
[0059] [Fig 13] Figure 13 illustrates a cross-sectional view, along a plane parallel to the bottom wall of a cash register base, of an example of a cash register base according to the invention;
[0060] [Fig 14] Figure 14 illustrates a cross-sectional view, along a plane parallel to the back wall, of an example of a cash register bottom according to the prior art;
[0061] [Fig 15] Figure 15 illustrates a cross-sectional view, along a plane parallel to the bottom wall, of an example of a bottom of a box without side reinforcement, according to the invention;
[0062] [Fig 16] Figure 16 illustrates an example of stacking crates according to the invention.
[0063] 6. Description of specific embodiments
[0064] 6.1. Box with lid equipped with corner reinforcements
[0065] A box 1 according to the invention comprises:
[0066] - a cash float of 10, and
[0067] - a lid 11 capable of covering the bottom of the case 10.
[0068] It is made of cardboard, preferably solid cardboard.
[0069] 6.1.1. Cash register base without side reinforcement
[0070] As shown in the figures, the bottom of the crate 10 of a crate 1 according to the invention comprises a bottom wall 100 and four consecutive sides 101, 102 connected two-by-two by angles A. The bottom wall 100 and the sides 101, 102 delimit a storage area for a content.
[0071] i. Beveled edges
[0072] In the embodiment described here, each angle A of the bottom of the box 10 includes a cut face 103 orthogonal to the bottom wall 100. Thus, the bottom of the box 10 has an octagonal section, in a plane parallel to the bottom wall 100.
[0073] Each cut-off corner 103 constitutes a corner reinforcement allowing the compression resistance of the bottom of the body to be strengthened along an axis orthogonal to the wall of the bottom of the body, i.e. vertically when the body rests on a horizontal surface.
[0074] In this embodiment, the cash drawer 10 is obtained from a cash drawer blank Ff comprising (see figure 3):
[0075] - a bottom flap 100' constituting the bottom wall 100;
[0076] - four side flaps 101', 102' ;- flaps 1030, 1031, 1033, 1034 to form the cut panels 103.
[0077] The bottom of the case 10 is obtained by implementing the following process. The four side flaps 101', 102' are folded at 90° to the bottom flap 100' in the same direction.
[0078] Then, the chamfered edges 103 are formed at the corners A of the bottom of the body 10. According to a first variant (see figure 5), each of the corner chamfered edges 103 of the bottom of the body comprises:
[0079] - a first corner flap 1030 of the bottom of the body formed, along a folding line L1 orthogonal to the bottom wall 100, in the extension of a first side flap 101' forming a first side 100 of the bottom of the body 10, and
[0080] - a second bottom corner flap 1031 formed, along a folding line L2 orthogonal to the bottom wall 100, in the extension of a second side flap 102' forming a second side 102 of the bottom of the body 100 consecutive to the first side 101, the first 1030 and second 1031 bottom corner flaps overlapping at least on a portion of their length;
[0081] - the overlapping portions of the first 1030 and second 1031 corner flaps are joined together by gluing.
[0082] According to a second variant (see figure 6), each of the cut corners 103 of the bottom of the body includes a first corner flap 1033 of the bottom of the body formed, following a first fold line L3 orthogonal to the bottom wall 100, in the extension of a first side flap 102' forming a first 102 side of the bottom of the body, and extending, from a second fold line L4 orthogonal to the bottom wall 100, by a second corner flap 1034 of the bottom of the body applied against a second side flap 101' forming a second side 101 of the bottom of the body consecutive to the first side 102, to which it is joined by gluing.
[0083] In this second variant, the second side flap 101' may optionally include an end 1011 folded at 180° against the corresponding second side 101 to which it is secured by gluing. This 180° fold is made, if necessary, before the bonding by gluing of the second corner flap 1034 to the second side flap 101'. In the first and second variants, each of the beveled corner sections of the bottom of the box can optionally include a third corner flap 1032 of the bottom of the box formed in the extension of the flap 100' of the bottom wall 100. This third corner flap 1032 of the bottom of the box is folded, along a fold line L5 parallel to the bottom wall 100, against the first 1030, 1033 and / or the second corner flap 1031 of the bottom of the box, internally (see figure 9) or externally (figures 7, 8) to the storage area.
[0084] 6.1.2. Lid
[0085] As shown in the figures, the lid 11 of a crate comprises a lid wall 110 and four lid sides 111. The lid 11 thus defines a compartment for the crate base, allowing the lid to cooperate with the crate base by covering the base with the lid and inserting the crate base into the lid. The lid has a height, along an axis orthogonal to the bottom wall of the crate base, substantially equal to the height of the crate base. The lid thus closes the storage space defined by the crate base.
[0086] In this embodiment, the cover includes a corner reinforcement 112 at each of its corners formed at the junction between two consecutive sides 111 of the cover.
[0087] The number of corner reinforcements on the lid is equal to the number of cut-off sides on the bottom of the case.
[0088] Each of the corner reinforcements 112 is shaped to fit, when the cover cooperates with the bottom of the body, into a space delimited by the chamfered edge of the corresponding corner of the bottom of the body and the planes of the two consecutive sides adjacent to the corresponding chamfered edge.
[0089] Each corner reinforcement extends orthogonally to the lid wall so that it forms a compression reinforcement in a direction orthogonal to the lid wall, i.e. to vertical compression when the box rests on a horizontal surface.
[0090] The corner reinforcements 112 of the lid each comprise three fold lines L6 orthogonal to the lid wall, i.e., to the bottom wall where the lid cooperates with the bottom of the body. These three folds L6 define an essentially triangular corner reinforcement section in a plane parallel to the lid wall 110.
[0091] For this purpose, in this embodiment, the lid is obtained from a lid blank Fc comprising (see figure 12):
[0092] - a 110' wall flap of the lid which constitutes the lid wall 110;
[0093] - four side flaps 111' of lid which constitute the sides 111 of lid;
[0094] - four 112' corner reinforcement flaps of the lid.
[0095] Two opposing 111' side lid flaps are extended at two of their opposite ends by 112' lid corner reinforcement flaps.
[0096] The lid is obtained by implementing the following process:
[0097] - each corner reinforcement flap 112' of the lid is folded at 90° to the corresponding side flap of the lid 111' along a first fold line L6 to form a first portion P1 orthogonal to the corresponding side flap of the lid 111'; - each corner reinforcement flap of the lid 112' is then folded towards the corresponding side flap 111' along a second fold line L6 towards the corresponding side flap of the lid 111' to form a second portion P2 joining with the corresponding side flap of the lid;
[0098] - Each corner reinforcement flap of the lid 112' is then folded along a third fold line L6 to form a third portion P3 parallel to and in contact with the corresponding side flap of the lid 112' to which it is bonded. In the example illustrated in Figure 4, the third portion P3 is folded outwards from the triangular dihedral angle formed by the corner reinforcement 112. In a variant not illustrated, the third portion P3 is folded inwards from the triangular dihedral angle formed by the corner reinforcement 112;
[0099] - the two side flaps of lid 112' bearing the corner reinforcements are folded at 90° to the lid wall 110' in the same direction;
[0100] - the two other side flaps of lid 112' are folded at 90° relative to the lid wall 110' until they come to rest against the first portion P1 of the corresponding corner reinforcement to which they are joined by gluing.
[0101] 6.1.3. Advantages of a box with a bottom equipped with chamfered corners and a lid with corner reinforcements
[0102] The fact, according to the invention, of providing crates whose base includes four chamfered angles orthogonally to the base wall and whose lid includes four corner reinforcements makes it possible to considerably increase the resistance to compression of the crate along a direction orthogonal to the base wall of the crate.
[0103] Indeed, the more folds the box contains that are orthogonal to the bottom wall, the greater the resistance to compression in that direction will be.
[0104] Thus, in the variant where each corner of the base has a chamfered edge and each corner of the lid has a triangular corner reinforcement, the crate will have five orthogonal folds at each of its corners (two on the base and three on the lid). A crate of this type has five orthogonal folds at each corner, for a total of twenty orthogonal folds.
[0105] Increasing the vertical compression resistance of a crate in this way can make it possible to produce crates with the same strength but requiring less cardboard, or crates using the same amount of cardboard but with increased vertical compression resistance.
[0106] 6.1.4. Variant: Octagonal base with side reinforcements i. Shape of the side reinforcements
[0107] Optionally, at least one of the sides 101, 102 of the bottom of the body 10 includes at least one side reinforcement 113 extending perpendicularly to the bottom wall 100.
[0108] In this case, by reference, two opposite sides 101 of the bottom of the body 10 include at least one side reinforcement 113.
[0109] In the illustrated example, two opposite sides 101 of the bottom of the box 10 each include two side reinforcements 113.
[0110] The side reinforcements 113 can be made in several ways. For example, they can be formed separately from the blank used to create the body shell. In this case, they are attached and secured to the body shell after it has been formed.
[0111] However, preferably, the side reinforcements 113 can be formed from flaps of the bottom of the body implemented to form the bottom of the body.
[0112] Thus, in the example illustrated in particular in figures 3 and 10, each side reinforcement 113 is formed of a side reinforcement flap 113' extending in the continuation of a first corner flap 1031 of the bottom of the body formed in the continuation of the first side flap 102' forming the first side 102 of the bottom of the body, and is formed against the second side 101 of the bottom of the body following the first side 102.
[0113] According to this variant, each side reinforcement 113 has an essentially triangular section in a plane parallel to the bottom wall.
[0114] To achieve this, each side reinforcement flap 113' comprises three folds along lines orthogonal L7 to the bottom wall of the body. These folds can be made in different ways such as those illustrated in figure 11 (a), (b), (c), (d).
[0115] In some variations, the side reinforcements 113 may have a cross-section other than triangular in a plane parallel to the bottom wall. For example, the side reinforcements 113 may have a cross-section that is essentially partially circular in a plane parallel to said bottom wall. Figure 11 (e), (f), (g), (h) illustrate different ways of implementing such side reinforcements 113.
[0116] ii. Arrangement of side reinforcements
[0117] The side reinforcements can be arranged in various ways along the sides of the bottom of the body to which they are attached.
[0118] In particular, a cash register base according to the invention preferably comprises two large opposing sides 101, each comprising at least one side reinforcement 113, and two small opposing sides 102. Furthermore,:
[0119] - the length of the large 101 and small 102 sides is chosen, and
[0120] - at least one side reinforcement 113 is arranged along the corresponding long side 101, in such a way that when two crates are stacked end-to-end on top of each other while being rotated about 90° around an axis orthogonal to the bottom wall of the crates, continuous reinforcement pillars without interruption are formed by the alignment of corner reinforcements 113 of the stacked crates on one side and by the alignment of side reinforcements 113 and corner reinforcements 112 of the stacked crates on the other.
[0121] Thus, when two crates are stacked by pivoting them 90° relative to each other along an axis orthogonal to the bottom of the crates, and by aligning a consecutive long side and short side of one crate respectively with a consecutive short side and long side of the crate above, continuous reinforcing pillars are formed without interruption by the alignment of corner reinforcements of the stacked crates and by the alignment of side reinforcements and corner reinforcements of the stacked crates.
[0122] If the bottom of the box comprises two large opposite sides 101 of length L each comprising a side reinforcement, and two small opposite sides 102 of length I, the side reinforcement 113 of each large side 101 is disposed at a distance between 0.8l and 1.2l from one of the small sides 102.
[0123] Preferably, the bottom of the box comprises two large opposite sides 101 of length equal to L, each comprising two side reinforcements, and two small opposite sides 102 of length equal to I. In this case, each of the large sides 101 comprises a first side reinforcement 113 disposed at a distance between 0.8l and 1.21 from a first of the small sides 102 and a second side reinforcement 113 disposed at a distance between 0.8l and 1.21 from a second of the small sides 102 (see figure 13).
[0124] This implementation allows, when two crates are stacked as previously indicated, to guarantee the formation of four reinforcing pillars.
[0125] iii. Advantages provided by side reinforcements
[0126] The side reinforcements, by generating folds orthogonal to the bottom wall of the crate, further increase the crate's resistance to vertical compression.
[0127] 6.1.5. Comparative tests
[0128] Tests were conducted to compare the vertical compression resistance of different types of crates.
[0129] Figure 14 illustrates the cross-section of a box base parallel to the bottom wall of a first type of box, according to the prior art, in which the base has a triangular corner reinforcement at each corner (dihedral base) and the lid has four conventionally glued corners (4 CC lid). In this case, each corner of the box comprises four folds orthogonal to the plane of the bottom wall of the box base, i.e., three folds at the corner of the box base and one fold at the corner of the lid. The box then comprises a total of sixteen folds at its corners.
[0130] Figure 15 illustrates the cross-section along a plane parallel to the bottom wall of a second type of crate, according to the invention, whose bottom has a hexagonal cross-section (octagonal bottom) and whose lid has a triangular corner reinforcement at each of its corners (dihedral lid) (a variant of the invention without side reinforcement). In this case, each corner of the crate comprises five folds orthogonal to the plane of the bottom wall of the crate, i.e., two folds at the corner of the crate bottom and three folds at the corner of the lid. The crate then comprises a total of twenty folds at its corners.
[0131] Figure 10 illustrates the cross-section along a plane parallel to the bottom wall of a crate base of a third type of crate, according to the invention, corresponding to the variant of Figure 15 incorporating triangular side reinforcements (octagonal base and reinforcements + dihedral lid). In this case, each corner of the crate comprises five folds orthogonal to the plane of the bottom wall of the crate base, i.e., two folds at the corner of the crate base and three folds at the corner of the lid. The crate then comprises a total of twenty folds at its corners, to which are added twelve folds corresponding to three folds for each of the four side reinforcements.
[0132] The table below illustrates the results of comparative tests attesting to the effectiveness of the invention.
[0133] [Tab 1]
[0134]
[0135] Each of these tests consisted of vertically loading a crate until it broke. The second type of crate exhibited a breaking strength 14% greater than that of the first type. Thus, implementing a crate according to the invention, without side reinforcement, increases the vertical compression resistance by 14%. The third type of crate exhibited a breaking strength 37% greater than that of the first type. Thus, implementing a crate according to the invention, with side reinforcements, increases the vertical compression resistance by 37%.
[0136] 6.2. Stacking of crates
[0137] Crates according to the invention can be stacked, in particular to achieve: - a foundation stack of 300, and
[0138] - a cross stack 200 resting on the surface of the foundation stack 300.
[0139] The following is described, as an illustrative and non-limiting example, the stacking of crates having corner reinforcements and side reinforcements (see figure 16).
[0140] 6.2.1. Foundation Stacking
[0141] First, a foundation stack of 300 is made on a base surface consisting here of a P pallet.
[0142] The 300 foundation stack comprises at least two EF layers of boxes stacked columnarily. As will become clearer later, a columnar stack of boxes means that the boxes are stacked in the same orientation.
[0143] In the embodiment described here, the foundation stack 1 comprises three layers EF1, EF2, EF3 of boxes 4. This number could be greater.
[0144] Each layer here contains five crates. In some variations, the number of crates per layer may be more or less than five.
[0145] The arrangement of the boxes 4 of each of the superimposed layers EF1, EF2, EF3 of the foundation stack 1 is identical so that the corner reinforcements 103 of the bottoms of the boxes of the superimposed layers of the foundation stack extend in line with each other and the side reinforcements 113 of the bottoms of the boxes of the superimposed layers of the foundation stack extend in line with each other.
[0146] So, :
[0147] - the corner reinforcements 103 extending in line with each other form, at each corner of the superimposed boxes of the foundation stack 300, a continuous compression reinforcement pillar 60 without interruption over the entire height of the foundation stack 300, and
[0148] - the side reinforcements 113 extending into the continuation of each other form as many pillars 70 of continuous compression reinforcement without interruption over the entire height of the foundation stack as a layer of boxes of the foundation stack comprises side reinforcements.
[0149] Each of the EF1, EF2, EF3 layers of foundation stack 1 includes, in this embodiment:
[0150] - a first line of three crates placed side by side, two by two along one of their long sides, with their opposite short sides aligned, and
[0151] - a second line of two boxes juxtaposed by one of their long sides to three of the aligned short sides of the line of three boxes, each of these two boxes presenting a short side aligned with one of the long sides, juxtaposed to no box, of the three juxtaposed boxes.
[0152] This foundation stacking therefore leads to the realization of:
[0153] - twenty 60-degree angle reinforcement pillars, i.e., four per crate, which extend continuously along the entire height of the foundation stack at each corner of the stacked crates, and
[0154] - twenty side reinforcement pillars 70, i.e. four per box, which extend respectively continuously over the entire height of the foundation stack.
[0155] The number of rows of boxes per layer, the number of boxes per layer, and the arrangement of the boxes are given for illustrative purposes only and are not exhaustive. The important thing is to choose the dimensions of the boxes, the arrangement of the side reinforcements, and the arrangement of the boxes per layer to form continuous columns, over the height of a foundation stack, with vertical compression reinforcement achieved by aligning side reinforcements on one side and corner reinforcements on the other.
[0156] 6.2.2. Cross stacking
[0157] After completing the foundation stack 300, a cross stack 200 is carried out on a base surface consisting of the upper surface of the foundation stack 300.
[0158] Cross stacking 200 comprises the superposition of at least two cross layers of boxes. In this embodiment, it comprises the superposition of five cross layers EC1, EC2, EC3, EC4, EC5. This number may be less or more.
[0159] Each layer here contains five crates. In some variations, the number of crates per layer may be more or less than five.
[0160] Each layer of boxes in the cross stack comprises, in this embodiment:
[0161] - a first line of three crates placed side by side, two by two along one of their long sides, with their opposite short sides aligned, and
[0162] - a second line of two boxes juxtaposed by one of their long sides to three of the aligned short sides of the line of three boxes, each of said two boxes presenting a short side aligned with one of the long sides, juxtaposed to no box, of the three juxtaposed boxes.
[0163] The first EC1 layer of the cross stack 200, which is deposited on the surface of the last EF3 layer of the foundation stack 300, is rotated 180° along an axis orthogonal to the bottom wall of the boxes, relative to this last EF3 layer of the foundation stack 1.
[0164] The layers of crates in the cross stack are then crossed two-by-two by a rotation of an angle of 180° around an axis orthogonal to the bottom walls of the crates.
[0165] Thus, each box in a cross layer is rotated by an angle of 90°, along an axis orthogonal to the bottom walls, relative to the box(es) located below and / or above.
[0166] This 200 cross-stacking therefore leads to the following:
[0167] - four reinforcing corner pillars 80, i.e. one at each corner of the cross stack 200, which extend continuously over the entire height of the cross stack,
[0168] - eight peripheral side reinforcement pillars 90, located at the periphery of the cross stack 200, which extend continuously over the entire height of the cross stack, and
[0169] - four internal side reinforcement pillars 1000, located inside the cross stack 200, which extend continuously over the entire height of the cross stack. Each of the reinforcement pillars of the cross stack extends in line with a reinforcement pillar of the foundation stack so as to form continuous compression reinforcement pillars without interruption over the entire cumulative height of the foundation stack and the cross stack.
[0170] Furthermore, reinforcing columns, i.e., internal reinforcing columns 1000, are formed within the overall stack, i.e., outside the periphery of the cumulative stack of the foundation stack and the cross stack. Thus, continuous reinforcing columns are not only formed at the peripheral walls of the cumulative stack. Rather, internal reinforcing columns are formed continuously along the entire cumulative height of the stack within this peripheral contour.
[0171] The presence of these internal reinforcement pillars 1000, consisting of the alignment of corner reinforcements and side reinforcements, is very advantageous.
[0172] It helps to ensure very good resistance to compression and very good stability of the total stacking of the crate (foundation stacking and cross stacking).
[0173] Therefore, it is possible to achieve better stability while using boxes made from a smaller quantity of cardboard.
[0174] This helps to reduce the cost of cardboard boxes and their environmental impact.
[0175] The number of rows of boxes per layer, the number of boxes per layer, and the box arrangement are given for illustrative purposes only and are not exhaustive. The important thing is to choose the box dimensions, the side reinforcement arrangement, and the box arrangement per layer to:
[0176] - to form continuous pillars, over the height of a cross stack, of vertical compression reinforcement by the alignment of side reinforcements and corner reinforcements on one side and by the alignment of corner reinforcements on the other;
[0177] - preferably form continuous pillars, over the height of the cross stack superimposed on the foundation stack, of reinforcement to vertical compression by the alignment of side reinforcements and corner reinforcements on the one hand and by the alignment of corner reinforcements on the other hand;
[0178] - preferably form reinforcement pillars at the periphery and in the center of the cross stack superimposed on the foundation stack.
[0179] It should be noted that for cross stacking, only crates with side reinforcements provide an increase in vertical compression resistance.
Claims
DEMANDS 1. Cardboard box (1) containing: - a cash register base (10) comprising a back wall (100) and four consecutive sides (101, 102) connected in pairs by angles (A), said back wall (100) and said sides (101, 102) delimiting a storage area for contents, and - a lid (11) adapted to cooperate with said cash box base (10) to close said storage area, characterized in that each of said angles (A) of said bottom of box (10) comprises a chamfered edge (103) orthogonal to said bottom wall (100) in such a way that said bottom of box (10) has an octagonal section, in a plane parallel to said bottom wall (100), said cover (11) having, at each of its corners, a corner reinforcement (112) orthogonal to said bottom wall (100), each of said corner reinforcements (112) being shaped to fit, when said cover (11) cooperates with said bottom of case (10), in a space delimited by said chamfered edge (103) of the corresponding corner (A) of said bottom of case (10) and the planes of the two consecutive sides (101, 102) adjacent to said corresponding chamfered edge (103), each of said corner reinforcements (112) of said cover (11) comprising three fold lines (L6) orthogonal to said bottom wall (100) defining a corner reinforcement section (112) essentially triangular in a plane parallel to said bottom wall (100) of said bottom of box (10).
2. A case according to claim 1 in which each of said chamfered corners (103) of said case base (10) comprises: - a first corner flap (1030) of the bottom of the case formed, along a folding line (L1) orthogonal to said bottom wall (100), in the extension of a first side flap (101') forming a first side (101) of said bottom of the case (10), and - a second bottom corner flap (1031) formed, along a fold line (L2) orthogonal to said bottom wall (100), in the extension of a second side flap (102') forming a second side (102) of said bottom (10) following said first side (101), and said first (1030) and second (1032) bottom corner flaps overlapping at least on a portion of their length.
3. Box according to claim 1 in which each of said cut corners (103) of said bottom of box (10) comprises a first corner flap (1033) of bottom of box formed, along a first fold line (L3) orthogonal to said bottom wall (100), in the extension of a first side flap (102') forming a first side (102) of said bottom of box (10), and extending, from a second fold line (L4) orthogonal to said bottom wall (100), by a second corner flap (1034) of bottom of box applied against a second side flap (101') forming a second side (101) of said bottom of box (10) consecutive to said first side (102).
4. Case according to claim 3 in which said second side flap (101') comprises an end (1011) folded at 180° against said corresponding second side (101).
5. A crate according to any one of claims 2 to 4 in which each of said beveled corners (103) of said crate bottom (10) comprises a third crate bottom corner flap (1032) formed in the extension of a bottom wall flap (100') forming said bottom wall (100) of said crate bottom (10), said third crate bottom corner flap (1032) being folded, along a fold line (L5) parallel to said bottom wall (100), against said first and / or said second crate bottom corner flap internally or externally to said storage area.
6. Box according to any one of claims 1 to 5 in which at least one of said sides (101, 102) of said bottom of box (10) comprises at least one side reinforcement (113) extending perpendicularly to said bottom wall (100).
7. Box according to claim 6 in which two opposite sides (101) of said box bottom (10) comprise at least one side reinforcement (113).
8. Box according to claim 7 in which two opposite sides (101) of said bottom of box (10) each comprise two side reinforcements (113).
9. Box according to claims 2 and 6, alone or in combination with any one of claims 7 and 8 in which said at least one side reinforcement (113) is formed of a side reinforcement flap (113') extending in the continuation of a corner flap (1030, 1031, 1033) of box bottom formed in the continuation of a side flap (101', 102') forming a first side (101, 102) of said box bottom (10), and is formed against a second side (101, 102) of said box bottom (10) consecutive to said first side (101, 102).
10. Box according to claims 3 and 6, alone or in combination with any one of claims 7 and 8 in which said at least one side reinforcement (113) is formed of a side reinforcement flap (113') extending in the continuation of a corner flap (1030, 1031, 1033) of box bottom formed in the continuation of a side flap (101', 102') forming a first side (101, 102) of said box bottom (10), and is formed against a second side (101, 102) of said box bottom (10) consecutive to said first side (101, 102).
11. Box according to claim 9 or 10 in which said at least one side reinforcement (113) has an essentially triangular section in a plane parallel to said bottom wall (100).
12. Box according to claim 9 or 10 in which said at least one side reinforcement (113) has an essentially partially circular cross-section in a plane parallel to said bottom wall (100).
13. A crate according to claim 7 alone or in combination with any one of claims 9 to 12, having two opposing long sides (101), each comprising at least one side reinforcement (113), and two opposing short sides (102), the length (L, I) of said long (101) and short (102) sides being chosen, and said at least one side reinforcement (113) being arranged along said corresponding long side (101), such that when two crates (1) are stacked end-to-end one on top of the other while being rotated 90° relative to each other about an axis orthogonal to said bottom wall (100) of said crates, continuous, uninterrupted reinforcing pillars are formed by the alignment of corner reinforcements (103, 112) of said stacked crates on one side and by the alignment of side reinforcements (110) and corner reinforcements (103, 112) of said stacked crates on the other hand.14.Box according to claim 8 alone or in combination with any one of claims 9 to 13 having two opposite long sides (101) of length equal to L each comprising two side reinforcements (113), and two opposite short sides (102) of length equal to I, each of said long sides (101) comprising a first side reinforcement (113) disposed at a distance between 0.8l and 1.21 from a first of said short sides (102) and a second side reinforcement (113) disposed at a distance between 0.8l and 1.21 from a second of said short sides (102).
15. Box blank for the production of a box (1) according to any one of claims 1 to 14 comprising: - a bottom panel (Ff) comprising a bottom wall flap (100'), four side flaps (101', 102') suitable for forming consecutive sides (101, 102) connected in pairs by angles (A), said bottom wall (100) and said sides (101, 102) being suitable for delimiting a storage area for contents, and corner reinforcement flaps (1030, 1031, 1032') suitable for forming a chamfered edge (103) orthogonal to said bottom wall (100) at each of said angles (A) of said bottom panel (10) in such a way that said bottom panel (10) has an octagonal cross-section, in a plane parallel to said bottom wall (100), - a lid blank (Fc) adapted to form a lid (11) adapted to cooperate with said base (10) to close said storage area, said lid blank (Fc) comprising a lid wall flap (110'), four lid side flaps (111') and corner reinforcement flaps (112') adapted to form, at each of said corners of said lid (11), a corner reinforcement (112) orthogonal to said base wall (100), said corner reinforcements (112) being shaped to fit, when said lid (11) cooperates with said base (10), in a space delimited by said chamfered edge (103) of the corresponding corner of said base (10) and the planes of the two consecutive sides (101, 102) adjacent to said corresponding chamfered edge (103),said corner reinforcement flaps (112') of said lid (11) comprising three fold lines (L6) orthogonal to said bottom wall (100) so as to define an essentially triangular corner reinforcement section in a plane parallel to said bottom wall (100) of said bottom of the crate (10).
16. Method of making a crate according to any one of claims 1 to 14 comprising:, - a step in the production of a cash register base (10) comprising a back wall and four consecutive sides connected in pairs by angles, said back wall and said sides delimiting a storage area for contents, and - a step of making a lid (11) suitable for cooperating with said bottom of the crate to close said storage area; each of the said angles of the said bottom of the box comprising a chamfered edge orthogonal to the said bottom wall in such a way that the said bottom of the box presents an octagonal section, in a plane parallel to the said bottom wall, said lid having, at each of its corners, a corner reinforcement orthogonal to said bottom wall, each of said corner reinforcements being shaped to fit, when said lid cooperates with said bottom of the box, into a space delimited by said chamfered edge of the corresponding corner of said bottom of the box and the planes of the two consecutive sides adjacent to said corresponding chamfered edge, each of said corner reinforcements of said cover comprising three fold lines orthogonal to said bottom wall defining an essentially triangular corner reinforcement section in a plane parallel to said bottom wall of said bottom of box.