Cardboard blank for producing a container reinforcement and container reinforcement

Abstract

Cardboard blank for producing a container reinforcement, with a floor section (1), a side section (7) lying along a prefabricated first folding edge (17) on the base section, wherein the side section (7) can be folded around the prefabricated first folding edge (17) and has at least one corner section (73, 74; 75, 76) extending beyond the prefabricated first folding edge (17), wherein the corner section (73, 74; 75, 76) can be folded around a prefabricated second folding edge (774) intersecting the prefabricated first folding edge (17).

Description

[0001] The invention relates to a cardboard blank for producing a container reinforcement and a container reinforcement.

[0002] To avoid plastic packaging materials, especially EPS, there have recently been increasing efforts to use cardboard packaging. This applies not only to outer packaging, but also to so-called package reinforcements. These are inserts in a packaging carton that protect a packaged item due to their structure. The aim is to prevent external influences on the packaged item and to prevent the packaged item from shifting its position within the packaging carton, as such influences can damage the packaged item.

[0003] An example from the prior art is disclosed in DE 197 09 969 A1. This document relates to packaging for frameless picture frames made from a one-piece cardboard blank. Hollow chamber profiles are formed on two opposite sides of a base section. Each hollow chamber profile encloses a stiffening element arranged diagonally within its interior profile cross-section by repeatedly folding the cardboard. Furthermore, the folding creates a fixing tab inside the packaging, which is held against the base section by the weight of the packaged object.

[0004] DE 42 41 870 A1 discloses a hollow-wall box made of a very lightweight material. A form and stabilizing insert inserted diagonally into the frame parts create a very stable, dimensionally stable hollow-wall box.

[0005] It is the problem of the invention to provide a cardboard blank for producing a container reinforcement and a container reinforcement produced therefrom, which is easy to manufacture and resistant to compressive stress.

[0006] According to the invention, this problem is solved by a cardboard blank for producing a container reinforcement having the features of claim 1 and a container reinforcement having the features of claim 9. Advantageous embodiments and further developments of the invention emerge from the following subclaims.

[0007] A cardboard blank according to the invention for producing a pack reinforcement has a base section and a side section adjacent to the base section along a prefabricated first fold edge. The side section can be folded over the prefabricated fold edge and has at least one corner section extending beyond the prefabricated fold edge. The corner section can be folded over a prefabricated second fold edge that intersects the first fold edge.

[0008] By folding the side section, the side section is positioned perpendicular to the base section. By subsequently folding the corner section, the latter is also positioned perpendicular to the side section. This provides increased stability against compressive forces from above on the side section, especially at its corners, as the folded corner section supports the side section.

[0009] The at least one corner section is advantageously divided into an outer section and an inner section by means of a third fold edge lying parallel to the second fold edge.

[0010] According to this design, the corner section can be folded twice, further increasing its strength. By folding twice, the corner section can assume an L-shape.

[0011] Advantageously, the second fold edge and the third fold edge can be perpendicular to the first fold edge.

[0012] According to this design, it is ensured that the sections of the corner section are always perpendicular to the floor section and thus bending of the corner section under pressure load is avoided.

[0013] Advantageously, a second corner section can be formed on the side of the side section opposite the at least one corner section.

[0014] According to this embodiment, the side section can thus be supported at both of its ends by means of folded corner sections, so that there is increased compressive strength at both end sections of the side section.

[0015] Advantageously, a lid section can be provided adjacent to the side section, which can be folded over a fourth fold edge lying parallel to the first fold edge.

[0016] According to this embodiment, additional stability can be achieved because a compressive force acting on the corner section can be distributed more evenly over the cover section.

[0017] Advantageously, a dimension of the cover section may correspond to a dimension of the inner section of the corner section.

[0018] According to this embodiment, the folded inner portion of the corner portion is thus able to completely support the lid portion.

[0019] Advantageously, an inner wall section can be provided adjacent to the lid section, which can be folded over a fifth folding edge lying parallel to the fourth folding edge.

[0020] According to this embodiment, the side wall reinforced by the corner section is designed in the form of a hollow chamber profile. Since, according to this embodiment, the outer section of the corner section can abut the inner wall section from the inside, the stability of the hollow chamber profile is further significantly improved, particularly in the area of ​​the corner section.

[0021] Advantageously, the cardboard blank can be formed mirror-symmetrically about a central axis parallel to the first folding edge.

[0022] This means that a side section with one or more foldable corner sections is provided on two opposite sides of the floor section, whereby a hollow chamber profile can be formed on both sides of the floor section.

[0023] The material for the cardboard cut-out can advantageously be corrugated cardboard, the waves of which are perpendicular to the first fold edge.

[0024] Due to this arrangement of the flutes, the side wall section, as well as the corner section after the production of a pack reinforcement from the cardboard blank, exhibits a structure known as a "standing wave," in which the flutes of the corrugated board run along a vertical direction. This has the advantage of additional stability due to the flute structure and, in particular, improved stackability of a pack reinforcement made from the cardboard blank. The corner section enables the side section to withstand compressive forces that far exceed its edge crush resistance. Edge crush resistance refers to the maximum force with which a piece of corrugated board can be loaded in the direction of the standing wave.

[0025] A container reinforcement according to the invention is produced from a cardboard blank as described above. A side section adjacent to a base section is folded open around a prefabricated first fold, and at least one corner section is folded over around a prefabricated first fold that intersects the second fold. Folding occurs such that a section of the at least one corner section is perpendicular to the base section and the side section.

[0026] In the container reinforcement, a lid section can be provided which is folded over a fourth fold edge lying parallel to the first fold edge and which is in contact with the section of the at least one corner section which is perpendicular to the base section and to the side section.

[0027] According to this design, a force acting on the cover section is evenly distributed over the vertical sections of the corner section, thereby increasing the stability of the reinforcement.

[0028] Advantageously, an inner wall section can be provided in a container reinforcement adjacent to the lid section, which inner wall section is folded over a fifth fold edge parallel to the fourth fold edge. The at least one corner section can be divided into an outer section and an inner section, of which the inner section is perpendicular to the base section and the side section, and the outer section rests against an inner side of the inner wall section facing the side section.

[0029] The base section is preferably rectangular in shape. The side sections are located on the short sides of the rectangle. The length of the side sections is shorter than the width of the rectangle, since the corner section(s) adjoin the side section.

[0030] The advantages achievable with the invention, in addition to those described above, include the ability to stack a large number of containers on pallets in a warehouse prior to use for shipping a product. This allows multi-legged pallets, such as tripod pallets, to be placed on the container and loaded without causing buckling or other failure of the container or sections of the container.

[0031] An embodiment of the invention is shown schematically in the drawings and is described in more detail below.

[0032] It shows Fig. 1 a plan view of a cardboard blank according to the invention for producing a container reinforcement. Fig. 2 a schematic perspective view to explain a manufacturing process of a container reinforcement. Fig. 3 a schematic perspective view of a finished container reinforcement. Fig. 4 a perspective view of a container reinforcement according to the invention from the front above.

[0033] As from the Fig. As can be seen in Figure 1, a carton blank made of corrugated cardboard for producing a container reinforcement according to the embodiment has a substantially rectangular base section 1. Adjacent to the base section, on its short sides, are side sections 7 and 9, which are connected to the base section 1 by folding edges 17, 19. Adjacent to the side sections 7 and 9 are lid sections 72 and 92, respectively, and inner wall sections 71 and 91, respectively. Adjacent to the inner wall sections 71 and 91 are flaps 70 and 90, respectively.

[0034] The lid portion 72 is connected to the side wall portion 7 via a fold edge 772, and in turn is connected to the inner wall portion 71 via a fold edge 772. The fold edges are formed in a known manner, e.g., by embossing or punching small segments from the corrugated cardboard along the line defining the fold edge.

[0035] The width of the side wall section 7 corresponds to the intended height of a side wall of the container reinforcement. However, the length of the side wall section 7 does not completely correspond to the width of the base section 1, since inner corner sections 74, 76 and adjoining outer corner sections 73 and 75 are provided at the ends of the side section 7. The corner sections are also defined by folded edges 774 and 7374 on one side and 776 and 7576 on the opposite side. A connection between the corner sections 73, 74, 75, 76 and the base section 1 or the lid section 72 is designed such that the corner sections 73, 74, 75 and 76 can be separated from the base section 1, from the adjoining longitudinal side parts 3, 5 and from the lid section 72 by simply pressing.In contrast, the folding edges are designed in such a way that the material can be easily folded along them but cannot be separated from each other without considerable force.

[0036] According to the embodiment, the length of the side wall section 7 and the inner corner sections 74, 76 essentially corresponds to the width of the base section 1. The length of the outer corner sections 73, 75 preferably corresponds to the length of the inner corner sections 74, 76, whereby when the corner sections 73, 74, 75, 76 are folded over, the reinforcement, viewed from above, corresponds to two adjacent sides of a square. However, it is alternatively possible to provide the outer corner sections 73, 75, in particular, with a different length if this should be necessary due to the object to be packaged, etc.

[0037] As an alternative to the described method of detaching the corner sections 73, 74, 75, 76 from the base section 1 or the long side parts 3, 5, it is possible to ensure from the outset, by cutting the corrugated cardboard material or another suitable separation method, that the edges of the corner section 73, 74, 75, 76 lying along the width direction of the base section 1 are separated from the adjacent sections. Preferably, the corner sections 73, 74, 75, 76 nevertheless rest against the base section 1, the long side parts 3, 5 or the lid section 72 in order to ensure that the folded corner section 73, 74, 75, 76 lies exactly between the lid section 72 and the base section 1 in the vertical extent, i.e. in the height direction.

[0038] In such separation processes, it should be noted that the best increase in edge crush resistance occurs when the height of the corner section 73, 74, 75, 76 corresponds exactly to the distance between the base section 1 and the cover section 72. This means that no material should be removed in the edge area of ​​the corner section 73, 74, 75, 76.

[0039] According to the embodiment, corrugated cardboard is used as the material for the carton blank, the waves of which run along the longitudinal direction of the carton blank. That is, the waves run in the Fig. 1 from left to right from the side of the side wall section 9 to the side of the side wall section 7.

[0040] The production of a container reinforcement according to the embodiment is based on the Fig. 2 explained.

[0041] For this purpose, the side wall section 7 is brought into a position perpendicular to the base section 1 by folding it around the folded edge 17. Next, the corner sections 73, 74, 75, 76 are detached from the lid section 72, the base section 1, and the long side sections 3, 5 and folded around their folded edges 774, 7374, 776, and 7576. Next, the lid section 72 is folded around the folded edge 772, and the inner wall section 71 is folded around the folded edge 7172, creating a hollow chamber profile. The flap 70 is then folded outward according to the embodiment so that it rests on the base section 1. By inserting the product to be packaged, the position of the flap is maintained, and thus also the shape of the hollow chamber profile consisting of the side section 7, lid section 72, and inner wall section 71.

[0042] Finally, the corner sections 7576 are folded inwards so that the Fig. 2, the hatched area of ​​the corner section 75 comes into contact with the inside of the inner wall section 71. The inner corner section 76 is thus perpendicular to the side wall section 7, while the outer corner section 75 is parallel to the side wall section 7. This results in a structural reinforcement of the corners of the container reinforcement, which is thus able to withstand strong pressure from above.

[0043] The Fig. Figure 3 shows an explanatory perspective view showing the finished container reinforcement in the corner area. As shown in Fig. 3 at the corner section 76 by means of a break line, the wave of the corrugated cardboard runs vertically upwards in the area of ​​the corners, whereby the compressive strength is also increased.

[0044] In the previous description, the Fig.1 right side with the side wall section 7. The production of the hollow profile on the opposite side with the side wall section 9 is carried out in a similar manner, since the sections there are mirror-symmetrical to those described above. After the production of the hollow chamber profiles on both sides, the long side sections 3 and 5 are folded up around their respective folded edges 13 and 15, thus completing the bundle reinforcement.

[0045] The side opposite side wall section 7, with side wall section 9 and corresponding elements, is folded in a manner analogous to the side of side wall section 7. The elements on the side of side wall section 9 have the same reference numerals, except that the number 7 is replaced by the number 9. The reference numerals for the fold lines on the side of side wall section 9 have been omitted for clarity. Folding ultimately creates a hollow chamber profile with a square cross-section on both broad sides of base section 1, with corners reinforced by corner sections 73, 74, 75, 76, 93, 94, 95, 96.

[0046] According to the invention, the corners of a pack reinforcement, as the most vulnerable sections, are reinforced. This prevents the side elements from buckling at these points, even when stacking multiple packs, as the strength is significantly increased, particularly in the corner sections. This allows packed packs to be stacked that can easily withstand the resulting high forces.

[0047] While the embodiment has been described with reference to a side wall section at the ends of which corner sections are provided, it is also possible, in the case of a longer side wall section, to provide one or more corner sections in its middle regions in the same way as at the ends.

[0048] According to the embodiment described, the tabs 70 and 90 are held against the base section 1 by the packaged object itself, thus ensuring the shape of the hollow chamber profiles, whose stability is further increased by the folded corner sections. However, as an alternative to the embodiment, it is possible to fold the tabs in the opposite direction so that they lie beneath the hollow chamber profile. Furthermore, suitable slots can be provided in the area of ​​the base section 1, through which the tabs 70 or 90 are inserted to ensure the shape of the hollow chamber profiles. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 197 09 969 A1

[0003] DE 42 41 870 A1

[0004]

Claims

[1] Cardboard blank for the production of a container reinforcement, with a floor section (1), a side section (7) lying along a prefabricated first folding edge (17) on the base section, wherein the side section (7) can be folded around the prefabricated first folding edge (17) and has at least one corner section (73, 74; 75, 76) extending beyond the prefabricated first folding edge (17), wherein the corner section (73, 74; 75, 76) can be folded around a prefabricated second folding edge (774) intersecting the prefabricated first folding edge (17). [2] Carton blank according to claim 1, wherein the at least one corner portion (73, 74) is divided into an outer portion (73; 75) and an inner portion (74; 76) by means of a third fold edge (7374; 7576) lying parallel to the second fold edge (774; 776). [3] Carton blank according to claim 1 or 2, wherein the second folding edge (774; 776) and the third folding edge (7374; 7576) are perpendicular to the first folding edge (17). [4] Cardboard blank according to one of claims 1 to 3, wherein a second corner section (75, 76; 73, 74) is formed on the side of the side section (7) opposite the at least one corner section (73, 74; 75, 76). [5] Carton blank according to one of claims 1 to 4, wherein a lid portion (72) is provided adjacent to the side portion (7), which can be folded over a fourth folding edge (772) lying parallel to the first folding edge (17). [6] Carton blank according to claim 5, wherein a dimension of the lid portion (72) corresponds to a dimension of the inner portion (74, 76) of the corner portion (73, 74; 75, 76). [7] Carton blank according to claim 5 or 6, wherein an inner wall section (71) is provided adjacent to the lid section (72), which can be folded over a fifth folding edge (7271) lying parallel to the fourth folding edge (772). [8] Cardboard blank according to one of claims 1 to 7, which is formed mirror-symmetrically about a central axis lying parallel to the first folding edge (17). [9] Carton blank according to one of claims 1 to 8, wherein the material for the carton blank is a corrugated cardboard whose waves are perpendicular to the first folding edge (17). [10] A bundle reinforcement produced from a cardboard blank according to any one of claims 1 to 9, wherein a side portion (7; 9) adjacent to a base portion (1) is folded up around a prefabricated first folding edge (17; 19), and at least one corner portion (73, 74; 75, 76; 93, 94; 95, 96) is folded over around a second folding edge (774; 776) intersecting the prefabricated first folding edge (17; 19), so that a portion (74; 76; 94; 96) of the at least one corner portion (73, 74; 75, 76; 93, 94; 95, 96) is perpendicular to the base portion (1) and to the side portion (7, 9). [11] Container reinforcement according to claim 9, wherein a lid section (72; 92) folded over a fourth folding edge (772) lying parallel to the first folding edge (17, 19) is in contact with the section (74; 76; 94; 96) of the at least one corner section (73, 74; 75, 76; 93, 94; 95, 96) that is perpendicular to the base section (1) and to the side section (7; 9). [12] Container reinforcement according to claim 10, wherein an inner wall section (71) is provided adjacent to the lid section (72), which is folded over a fifth fold edge (7271) lying parallel to the fourth fold edge (772), and the at least one corner section (73, 74; 75, 76; 93, 94; 95, 96) is divided into an outer section (73; 75; 93, 95) and an inner section (74; 76; 94; 96), of which the inner section (74; 76; 94; 96) is perpendicular to the base section (1) and to the side section (7, 9), and the outer section (73; 75; 93, 95) bears against an inner side of the inner wall section (71, 91) directed towards the side section (7; 9).

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