Holding device for positioning cardboard lids

Abstract

Holding device (1) for positioning wings (16) forming a cardboard lid on a cardboard box (15), comprising: - a first planar element (2) with side edges (3) and a first flat surface (4) spanned thereby; - a second planar element (5) with side edges (6) and a second flat surface (7) spanned thereby; - a connecting element (8) that connects a side edge (3) of the first planar element (2) and a side edge (6) of the second planar element (5) to each other in such a way that the planar elements (2, 5) are fixed in a substantially parallel, but slightly inclined orientation of the first and second surfaces (4, 7) to each other, wherein the connecting element (8) projects beyond the surface spanned by the side edges (3, 6) of at least one planar element (2, 5).wherein at least one of the planar elements forms an angle with the connecting element on its side facing the other planar element which is less than 90 degrees.

Description

[0001] The present invention relates to a holding device for positioning cardboard lids.

[0002] US 4 761 935 A discloses a generic holding device.

[0003] Cardboard boxes are used, for example, for shipping goods. Here and in the following, a cardboard box is understood to be a packaging element, particularly made of cellulose, wood pulp, and recycled paper, which, for example, has a cuboid shape and whose lid is formed by at least two, typically four, flaps, each attached to a side edge around the opening and folded over one another to close the box.

[0004] These flaps tend to pop open and stick up, leaving the box half-open unless they are secured with tape or interlocked in a specific way. Such partially open lids are a hindrance when storing boxes because they negatively affect stackability.

[0005] When filling a carton, for example when packing goods, the problem arises that the flaps can inadvertently fold partially shut and thus obstruct the process. It is therefore an object of the present invention to provide a holding device that can be used simply and quickly to securely position carton lids or hold them in the desired position. Furthermore, a method for preparing cartons for filling or storage is to be provided.

[0006] This problem is solved by the subject matter of the independent claim. Advantageous embodiments and further developments are the subject matter of the dependent claims.

[0007] According to one aspect of the invention, a holding device for positioning wings forming a cardboard lid on a cardboard box is provided, comprising a first planar element with side edges and a first flat surface spanned by the side edges, a second planar element with side edges and a second flat surface spanned by the side edges, and a connecting element that connects a side edge of the first planar element and a side edge of the second planar element to each other in such a way that the planar elements are fixed in a substantially parallel orientation with a slight inclination of the first and the second surfaces to each other, wherein the connecting element projects beyond the surface spanned by the side edges of at least one planar element, wherein at least one of the planar elements forms an angle with the connecting element on its side facing the other planar element.which is less than 90 degrees.

[0008] For the angle α, for example, 70 degrees < α < 90 degrees, and in particular 75 degrees < α < 88 degrees.

[0009] Thus, the two flat elements are slightly inclined towards each other, and their distance from one another is not uniform, but rather greater in the area of ​​the connecting element than at a certain distance from it. This creates a clamping effect that allows particularly flexible materials, such as cardboard or paperboard, to be securely wedged between the two flat elements.

[0010] In particular, the planar elements can be designed such that they have a distance a1 from each other at their side edges connected to the connecting element, a distance a2 at their side edges opposite these side edges, and a distance a3 in an area between, where a3 < a1 and a3 < a2. In this embodiment, the open side edges opposite the side edges connected to the connecting element are thus bent away from each other again to facilitate the insertion of a cardboard box. An improved clamping effect is achieved in the area with a smaller distance between the planar elements.

[0011] For example, the first and second planar elements can be designed as rectangular plates whose planes are essentially parallel to each other but slightly inclined towards each other, and which are connected at their side edge by a third, also rectangular, plate. The first two plates then each form an angle with the connecting plate that is less than a right angle. Rather, the two plates are slightly inclined towards each other.

[0012] The holding device has the advantage that it can be placed or slid onto the cardboard to position the wings that form the lid. The first flat surface can rest on top of the wings, and the second flat surface underneath them, so that the wings are fixed in one plane, namely between the first and second flat elements, preventing the lid from opening. The connecting element then rests partially against one side of the cardboard.

[0013] The first and second flat elements are spaced apart from each other by a distance *a* of 0.1 cm ≤ *a* ≤ 1.5 cm, preferably 0.3 cm ≤ *a* ≤ 1.2 cm. Such a distance ensures that typical cardboard thicknesses fit between the flat elements and are held tightly enough to prevent the lid from opening. The flat elements can be rectangular, but can also be triangular, polygonal, round, or oval. The size of the first and second flat surfaces can be adapted to the size of the cardboard boxes with which the holding device is to be used. While larger surfaces allow for secure positioning of the cardboard lids, smaller surfaces, and thus a smaller holding device, may be easier to handle. For example, the side edges of the first and second flat elements can have a length *L* of 2 cm ≤ *L* ≤ 10c, preferably 4 cm ≤ *a* ≤ 8 cm.With these dimensions, the holding device is suitable for use with standard packages. For very large or very small packages, other dimensions may be advantageous.

[0014] The connecting element can also be designed as a flat element. It can be flat or curved, for example with a U-shaped profile. A flat surface can sometimes mean easier handling.

[0015] According to the invention, the connecting element comprises a third planar element and a fourth planar element, which are also aligned almost, but not quite, parallel to each other and are displaceable relative to each other, wherein the third planar element is fixedly connected to the first planar element and the fourth planar element to the second planar element. This has the advantage that the distance between the first and the second planar elements is variable and can be adapted to the thickness of the cardboard material.

[0016] The third and fourth planar elements can be locked together in a plurality of positions, for example by means of locking elements.

[0017] The fourth flat element can have a tab into which the third flat element can be inserted. The tab ensures that the two flat elements are slidably connected to each other. The tab can have locking elements or a rough texture to secure the two flat elements together.

[0018] According to one embodiment, the side edges are formed in particular by wires, but they can also be made of, for example, plastic. In this embodiment, the first and second flat surfaces spanned by the side edges are formed by the empty space within the frame. The first and second flat elements are not solid in this embodiment. In this case, the wings forming the cardboard lid are clamped between the wires, where "wires" are understood to be relatively delicate structures made of metal, particularly with a diameter of a few millimeters, from which the holding device or elements thereof can be bent.

[0019] In contrast, according to another embodiment, the first and second clamped surfaces are formed by a first and a second plate, each having a first and a second main surface. In this case, the wings forming the cardboard lid are clamped between the main surfaces of the two plates. The side edges are formed by the side surfaces or side edges of the plates.

[0020] According to one embodiment, the main surfaces of the planar elements facing each other have a rough texture. While the plates can also have a smooth surface, a rough texture increases friction and thus ensures a more secure positioning of the holding device on the cardboard. The rough texture can be created in various ways, for example, by roughening the surface of the plates or by applying a non-slip coating, such as hook and loop fastener, rubber, or a textile material like felt. It can also be created by local warping of the planar elements.

[0021] According to a further embodiment, the holding device also includes at least one spring element for exerting a force on one of the plates in the direction of the other plate. The spring element thus improves the clamping between the plates. The spring, which can be designed, for example, as a band or wire, can be oriented so that it can be pushed into a gap between two wings and, after reaching this position, expands again to exert a force on one plate in the direction of the other plate.

[0022] Instead of or in addition to the spring element, a tongue may also be provided which prevents the holding device from slipping sideways by lying in a gap between two wings when the holding device is pushed onto the cardboard.

[0023] Alternatively or additionally, a bridge can be provided that projects perpendicularly into the gap between the first and second surfaces and also prevents horizontal slippage.

[0024] According to a further embodiment, the holding device also includes at least one element for storing and / or reproducing information. This has the advantage that the device can be used to store information such as the location or destination, or the contents of a box.

[0025] Such an element for storing and / or reproducing information can also be provided in a holding device for positioning wings forming a carton lid on a carton, wherein the holding device comprises a first planar element with side edges and a first flat surface spanned thereby, a second planar element with side edges and a second flat surface spanned thereby, and a connecting element that connects a side edge of the first planar element and a side edge of the second planar element to each other in such a way that the planar elements are fixed in a substantially parallel orientation of the first and the second surface to each other, wherein the connecting element projects beyond the surface spanned by the side edges of at least one planar element, wherein the planar elements form a right angle with the connecting element.

[0026] In any case, the element for storing and / or reproducing information can be designed as a sensor element. This can be attached to the connecting element, in particular, so that it is exposed on a side wall of the carton. Two or more sensor elements can also be provided, for example, one inside and one outside the carton, to compare sensor values ​​inside the carton with those in the surrounding environment.

[0027] Such a sensor element can be designed to detect the position of the carton, thus allowing conclusions to be drawn about the duration of its stay in specific locations or about transport routes and / or speeds. Environmental conditions such as temperature and humidity, gas concentrations, airflow, or noise can also be detected and, if necessary, documented in this way. Advantageously, the sensor element has a data storage function and can be read out using a suitable device.

[0028] According to one embodiment, the element for storing and / or reproducing information comprises at least one NFC interface or an RFID tag, which may be attached to or on the connecting element. In this embodiment, a pulse generator may be provided that transmits data and / or triggers actions when the carton approaches a corresponding receiving unit. For example, an RFID transponder may be attached to the connecting element.

[0029] These designs make it possible to record the dwell time and handling conditions of the carton and its contents, which can be particularly useful for quality assurance. For example, such stored data can be used as proof of packaging and transport conditions. Furthermore, warehousing and inventory management can be improved and simplified.

[0030] According to one embodiment, the holding device, as an element for storing and / or reproducing information, has a pocket formed on a surface of the connecting element for inserting a card element. Here and in the following, a card element is understood to be a flat element, for example made of paper, which can be written on or printed on, or which can contain a chip to carry information.

[0031] According to another aspect, a device for positioning cardboard lids is specified, comprising at least two of the described holding devices, which are connected to each other in such a way that the first surfaces and second surfaces are aligned coplanarly and the connecting elements are rotated 90° relative to each other, so that two adjacent wings of an open cardboard lid are placed between the first planar elements and the associated second planar elements.

[0032] Two adjacent wings are understood here to mean two wings that are arranged on side edges of the cardboard box that are connected to each other at a corner.

[0033] The device has the advantage that it can be slid onto two adjacent wings and securely fixes them in the open position, so that the box can be packed or unpacked without the wings getting in the way.

[0034] The two holding devices can be connected to each other, for example, by means of an angle bracket or a flat element. Alternatively, they can be joined by welding or adhesive bonding. Another alternative is a one-piece construction of the device.

[0035] According to a further aspect of the invention, a method for preparing cartons for filling is specified, wherein at least one of the described devices is placed on at least two adjacent wings of an open lid of the carton in order to fix them in the open position.

[0036] According to a further aspect of the invention, a method for preparing cartons for storage is described, wherein at least one of the previously described holding devices is placed on two exposed wings of a closed lid of the carton on the top side, in order to fix them in the closed position. In this method, in particular, two holding devices can be placed on opposite sides of the carton.

[0037] Embodiments of the invention are explained in more detail below with reference to schematic drawings. Figure 1 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 2 shows a perspective view of a cardboard box onto which the holding device is mounted. Figure 1 Figure 3 shows a cross-section through the cardboard box with the holding device as shown. Figure 2Figure 4 shows a section of a holding device according to an embodiment not belonging to the invention; Figure 5 shows a cross-section through a holding device according to an embodiment not belonging to the invention; Figure 6 shows a cross-section through a holding device according to an embodiment not belonging to the invention; Figure 7 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 8 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 9 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 10 shows a cardboard box with a holding device slid onto it according to Figure 9 Figure 11 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 12 shows the holding device according to Figure 11In a sectional view, Figure 13 shows a perspective view of a holding device according to one embodiment of the invention, Figure 14 shows a perspective view of a holding device according to a further embodiment of the invention, Figure 15 shows a perspective view of a holding device according to an embodiment not belonging to the invention; Figure 16 shows a first variant of the holding device according to Figure 15 Figure 17 shows a second variant of the holding device according to Figure 15 and Figure 18 shows the holding device according to Figure 17 in a sectional view.

[0038] Figure 1Figure 1 shows a holding device 1 according to an embodiment not belonging to the invention. The holding device 1 has a first planar element 2 with side edges 3 and a second planar element 5 with side edges 6. The side edges 3 of the first planar element 2 define a first flat surface 4. The side edges 6 of the second planar element 5 also define a flat surface 7. The two surfaces 4 and 7 are aligned almost, but not quite, parallel to each other and are spaced a apart. The planar elements 2 and 5 are connected to each other at a side edge 3 or 6 by a connecting element 8. In the embodiment shown, the connecting element 8 is also designed as a plate and has a first main surface 13 and a second main surface 14.

[0039] The first planar element 2 is formed by a plate, for example made of metal or plastic, which has a first main surface 9 and a second main surface 10, which are in Figure 1 not shown. The second planar element 5 is also formed by a plate, for example made of metal or plastic, whereby this plate also has a first main surface 11 and a surface in Figure 1 The second main surface 12, not shown, is located on the first planar element 2 and faces the first main surface 1 of the second planar element 5. A space 20 is formed between the two surfaces 4 and 7.

[0040] In the right half of Figure 1A sectional view of a detail of the holding device 1 is shown. The angles formed by the opposing surfaces of the planar elements 2, 5 with the connecting element 8 are labeled α1 and α2, respectively. In the illustrated embodiment, both angles are less than 90 degrees and are approximately 85 degrees. This results in an improved clamping effect of the holding device 1 on a cardboard box.

[0041] In the illustrated embodiment, the open ends 43 of the two planar elements 2, 5, i.e., the ends furthest from the connecting element 8, are again inclined away from each other. This facilitates mounting them onto a cardboard box. Such a holding device 1 can, for example, be designed as an extruded profile.

[0042] Figure 2 The holding device 1 shows according to Figure 1When used to position the wings 16 forming a carton lid of a carton 15, the holding device 1 is placed on a side edge 17 of the carton 15 and the wings 16 are inserted into the space 20. The first main surface 13 of the connecting element 8 is exposed on a side surface of the carton 15.

[0043] Thus, areas of the wings 16 are clamped between the first flat element 2 and the second flat element 5 of the holding device 1 and fixed in one plane, so that the cardboard lid cannot open.

[0044] In the illustrated embodiment, a pocket 25 for inserting a card element 26 is formed on the first main surface 13 of the connecting element 8. The card element 26 can contain information about the carton 15 or its contents, for example in the form of a label and / or a barcode and / or a QR code.

[0045] In Figure 2Only one holding device 1 is shown, which is placed on the cardboard 15. However, another holding device 1 could typically be provided on the opposite side edge 18.

[0046] Figure 3 shows the edge area of ​​carton 15 according to Figure 2 with the holding device 1 in cross-section. It can be seen how the wings 16 are arranged in the space 20 between the second main surface 10 of the first planar element 2 and the first main surface 11 of the second planar element 15. The second planar element 15 extends over an upper edge 28 of the carton 15 into the interior of the carton 15. The second main surface 14 of the connecting element 8 rests against an outer surface 19 of the carton 15.

[0047] Figure 4Figure 1 shows a section of a holding device 1 according to an embodiment not belonging to the invention, which provides a non-slip coating 21 on the second main surface 10 of the first planar element 2 and the first main surface 1 of the second planar element 5. The non-slip coating 21, which may also be elastic, serves to improve the force transmission between the planar elements 2, 5 and the wings 16, so that the holding device 1 cannot slip off the wings 16. The non-slip coating 21 may, in particular, be a rubber coating, a textile coating, or a roughened surface.

[0048] Figure 5Figure 1 shows an embodiment of a holding device 1 not belonging to the invention. This differs from those shown previously in that a spring element 22 is provided which exerts a force on the second main surface 12 of the second planar element 5 and presses it towards the first planar element 2 in order to improve the clamping of the wings 16 of the cardboard lid in the space 20. An angle α of less than 90 degrees can also be achieved in this way.

[0049] Figure 6 Figure 1 shows an embodiment of a holding device 1 not belonging to the invention, wherein this embodiment differs from some previous ones in that the ends 23 of the planar elements 2, 5 are bent away from each other in such a way that they form a funnel-shaped opening by means of which the holding device 1 can be pushed onto a cardboard box particularly well.

[0050] Figure 7Figure 1 shows a perspective view of a holding device 1 according to an embodiment not belonging to the invention. This differs from the previously shown embodiments in that the planar element 2 and the planar element 5 are not formed by compact plates, but by wires 24 which are shaped into side edges 3, 6 and thus span the first surface 4 and the second surface 7.

[0051] Figure 8 shows another embodiment of the holding device 1 not belonging to the invention, which differs, for example, from the one in Figure 1 The holding device shown differs only in that the plates forming the planar elements 2, 5 have a round shape. Furthermore, the holding device 1 according to Figure 8 also an RFID transponder 27, which is arranged on the first main surface 13 of the connecting element 8.

[0052] A combination of various features based on the Figures 4, 5 , 6, 7 and 8The described embodiments can be advantageous in many cases.

[0053] Figure 9 Figure 1 shows a schematic view of a device 100 for positioning wings 16 forming a cardboard lid on a cardboard box 15 according to an embodiment of the invention. The device 100 comprises two of the holding devices 1 described with reference to the preceding figures, each of which is connected to or abuts one another at a side edge 101 of its connecting elements 8. The two holding devices 1 can be formed in one piece or connected to one another via a connecting element not shown in the figures, or via an adhesive bond, a welded joint, or some other type of connection.

[0054] The two holding devices 1 are positioned relative to each other such that their first planar elements 2 and their second planar elements 5, or the first surfaces 4 and the second surfaces 7, are coplanar to each other. Thus, the orientation of the spaces 20 is also coplanar. The two holding devices 1 are positioned rotated 90 degrees relative to each other.

[0055] Figure 10 shows the holding device according to Figure 9 , which was positioned on a carton 15 to hold the carton 15 in an open position. The device 1 was slid onto two adjacent wings 16 such that each wing 16 came to rest in one of the spaces 20 between them. In this way, the wings 16 are fixed in one plane so that they cannot fold shut.

[0056] In Figure 10Only one device 100 is shown. For reliable fixing of all four wings 16, another device 100 can be placed on the diagonally opposite corner.

[0057] The Figures 11 and 12 Figure 1 shows a further embodiment of a holding device 1 not belonging to the invention. In this embodiment, both the first flat element 2 and the second flat element 5 have local curvatures 28 that extend into the space 20 between the flat elements 2, 5 and locally reduce the distance a. The curvatures 28 act like a non-slip coating on the flat elements 2, 5, providing better grip on a cardboard box.

[0058] Figure 13Figure 1 shows an embodiment of the holding device 1 according to the invention. In this embodiment, the connecting element 8 is formed by two further flat elements, namely a third flat element 30 and a fourth flat element 31, wherein the third flat element 30 is rigidly connected to the second flat element 2 and the fourth flat element 31 is rigidly connected to the second flat element 5. The fourth flat element 31 has guide rails 32 on its sides, which engage an edge region of the third flat element 30. The third flat element 30 can have locking elements 33 in its edge region, which correspond to corresponding locking elements on the inside of the guide rails 32 and can lock the third flat element 30 in defined positions on the fourth flat element 31.The third planar element 30 is displaceable along a longitudinal axis L of the connecting element 8 against the fourth planar element 31 and can then be locked in fixed positions to determine the distance between the first planar element 2 and the second planar element 5.

[0059] Figure 14 shows a further embodiment of the holding device 1 according to the invention, which differs from the one in Figure 13 The embodiment shown differs in that, instead of guide rails 32, a tab 34 is provided, which thus completely encompasses the third planar element 30. To determine the distance between the first planar element 2 and the second planar element 5, locking elements can also be used in this embodiment, as shown by Figure 13as described. Alternatively, it may be provided that the inside of the tab 34 is formed with a non-slip coating, so that the third flat element 30 can only be displaced from the tab 34 by applying a certain force.

[0060] Figure 15 Figure 1 shows a schematic diagram of an embodiment of the holding device not belonging to the invention, in which the first flat element 2 and / or the second flat element 5 is arranged on the connecting element 8 by means of a hinge-like connection. For this purpose, the flat element 2, 5 has one or more tubes 35 on its side edge 3. The connecting element 8 also has one or more tubes 36 on its upper edge 42, so that the tubes 35 and 36 form an elongated cavity.

[0061] Figure 16Figure 1 shows an embodiment not belonging to the invention, in which a screw 37 is screwed into the cavity, for which the cavity may have a corresponding thread. In the case of the Figure 16 In the illustrated embodiment, the angle between the flat element 2 and the connecting element 8 is determined using the screw.

[0062] Figure 17 Figure 1 shows an embodiment not belonging to the invention, in which a bolt 38 is inserted into the cavity to attach the flat element 5 to the connecting element 8. A coil spring 39 is also provided, through which the bolt 38 is also guided, and which, with its spring legs 40, 41, i.e., its open ends, is supported on the connecting element 8 and the flat element 5 and exerts a force on them, such that the angle between them is more than 90 degrees and thus the opposite angle α, facing the first flat element 2, is less than 90 degrees. Reference symbol list

[0063] 1 Holding device 2 First flat element 3 Side edge 4 First surface 5 Second flat element 6 Side edge 7 Second surface 8 Connecting element 9 First main surface 10 Second main surface 11 First main surface 12 Second main surface 13 First main surface 14 Second main surface 15 Cardboard 16 Wing 17 Side edge 18 Side edge 19 Outer surface 20 Gap 21 Covering 22 Spring element 23 End 24 Wire 25 Pocket 26 Card element 27 RFID transponder 28 Curvature 30 Third flat element 31 Fourth flat element 32 Guide rail 33 Locking element 34 Tab 35 Tube 36 Tube 37 Screw 38 Bolt 39 Coil spring 40 Strut 41 Strut 42 Top edge 43 End 100 Device 101 Side edge

Claims

1. Holding device (1) for positioning wings (16) which form a cardboard lid on a box (15), comprising - a first planar element (2) with side edges (3) and a first planar face (4) which is defined thereby, - a second planar element (5) with side edges (6) and a second planar face (7) which is defined thereby, - a connection element (8) which connects a side edge (3) of the first planar element (2) and a side edge (6) of the second planar element (5) to each other in such a manner that the planar elements (2, 5) are fixed to each other in a substantially parallel but slightly inclined orientation of the first and the second faces (4, 7) with respect to each other, wherein the connection element (8) protrudes beyond the face, defined by the side edges (3, 6), of at least one planar element (2, 5), wherein at least one of the planar elements forms at the side thereof facing the other planar element an angle with the connection element which is less than 90 degrees. wherein the connection element (8) has a third planar element (30) and a fourth planar element (31) which are orientated almost parallel with each other and can be displaced with respect to each other, wherein the third planar element (30) is securely connected to the first planar element (2) and the fourth planar element (31) is securely connected to the second planar element (5).

2. Holding device (1) according to claim 1, wherein the first planar element (2) has a spacing a from the second planar element (5) with 0.5 cm ≤ a ≤ 1.5 cm.

3. Holding device (1) according to claim 1 or 2, wherein the third planar element (30) and the fourth planar element (31) can be locked to each other in a plurality of positions.

4. Holding device (1) according to any one of claims 1 to 3, wherein the third planar element (30) can be introduced into a flap (34) of the fourth planar element (31).

5. Holding device (1) according to any one of claims 1 to 4, wherein the side edges (3, 6) of the first and second planar element (2, 5) have a length L with 2 cm ≤ L ≤ 10 cm.

6. Holding device (1) according to any one of claims 1 to 5, wherein the side edges (3, 6) are formed by wires (24).

7. Holding device (1) according to any one of claims 1 to 5, wherein the first and the second defined face (4, 7) are formed by a first and a second plate which in each case have a first and a second main surface (9, 10, 11, 12).

8. Holding device (1) according to claim 7, wherein the mutually facing main surfaces (10, 11) of the planar elements (2, 5) have a rough texture.

9. Holding device (1) according to any one of claims 7 or 8, further comprising at least one resilient element (22) for applying a force to one of the plates in the direction of the other plate.

10. Holding device (1) according to any one of claims 1 to 9, further having at least one element for storage and / or reproduction of information.

11. Device (100) for positioning wings (16) which form a cardboard lid on a box (15), comprising at least two holding devices (1) according to any one of claims 1 to 10 which are connected to each other in such a manner that the first faces and the second faces are each orientated in a coplanar manner and the connection elements (8) are orientated in a state rotated through 90 degrees with respect to each other so that two adjacent wings (16) of an open cardboard lid can be placed between the first planar elements (2) and the associated second planar elements (5).

12. Method for preparing boxes for filling, wherein at least one holding device (1) according to claim 11 is placed on at least two adjacent wings (16) of an open cardboard lid in order to fix them in the open position.

13. Method for preparing boxes for storage, wherein at least one holding device (1) according to any one of claims 1 to 10 is placed on two wings (16), which are exposed at the upper side of the box (15), of a closed cardboard lid in order to fix them in the closed position.

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