WO1995005979A1

WO1995005979A1 - Packaging container for transport on pallets

Info

Publication number: WO1995005979A1
Application number: PCT/EP1994/002841
Authority: WO
Inventors: Joachim Schlenstedt; Karl-Friedrich DÜBNER
Original assignee: Maschinenbau Und Plastverarbeitung Gmbh
Priority date: 1993-08-26
Filing date: 1994-08-26
Publication date: 1995-03-02

Abstract

A packaging container for transport on pallets has a bottom plate (50), sidewalls (15A-15D) and a lid (60). State-of-the-art packaging containers are mainly made of cardboard, and their relatively low solidity generally does not allow several packaging containers to be stacked. In addition, simple cardboard packaging containers or the like risk slipping off pallets. The object of the invention is to create an improved packaging container from that point of view. For that purpose, a packaging container has sidewalls made of one or several plates that consist of a double plate with a first and a second layer made of flexible material and strips that extend between those layers and form cavities. The plate or plates are mutually linked, forming a sheath with folding edges. The folding edges are formed by a foldable connection between adjacent edges of the plates or by interpenetration of both layers. The sheath is provided with a lower circumferential edge that allows the sheath to engage a pallet. The loose bottom plate may be laid into the sheath and the loose lid may be laid on the sheath.

Description

Packaging containers for transport on pallets

The present invention relates to a packaging container for transport on pallets with a base plate, side walls and a cover plate.

As packaging containers for transport on pallets, cardboard boxes have hitherto generally been used, which are appropriately folded and glued with adhesive films and, if necessary, stabilized with additional stabilizing rods made of plastic or metal, which can be arranged along the edges of the boxes. Such cartons, which cannot be anchored on the pallets, can slip or tip over and fall and fall on the pallets in the event of jerky movement or when the pallets are inclined. Stacking several pallets with boxes is not possible due to the insufficient dimensional stability of the boxes. Such packaging boxes are also not protected against tearing and damage, so that multiple reuse of the packaging boxes is ruled out due to damage that frequently occurs during use. Through the use of adhesive films made of plastic or other materials stiffening the boxes, the recyclability of such packaging boxes is impaired due to the mixture of several material components.

It is therefore an object of the present invention to provide an improved packaging container for transport on pallets.

According to the invention, this object is achieved by a Packing container of the type mentioned at the outset, in which the side walls are formed from one or more plates which consist of a double wall plate with a first and a second layer made of flexible material and webs running between them and forming hollow chambers , wherein the plate or the plates are connected to each other to form a folded edge casing, and the folded edges are formed either by a foldable connection of abutting edges of the plates or after severing one of the two layers by the opposite layer, the cover is provided with a lower peripheral edge designed to engage in a pallet and the loose base plate can be inserted into the casing and the loose cover plate can be placed on the casing.

From the magazine "Kunststoffe", volume 65, .1975, page 582, a hollow profile plate with two cover plates is known, which are connected to one another by means of webs which run perpendicular to the cover plates and run parallel to one another. Such a double wall sheet, e.g. made from polycarbonate by extrusion has a relatively low basis weight with an extraordinarily high section modulus. Despite the small thickness of the two cover plates of the double web plate, these act as upper and lower chords with high pressure and tensile capacity, since they are fixed and held by uniformly distributed webs integrally formed with these plates.

By using such a double-walled sheet as the material for the side walls, the packaging container according to the invention has a strong design, which allows a stacking of several packaging containers, each because they are arranged on pallets, made possible one above the other. By using a resistant material, the packaging container is protected from damage and is therefore accessible for reusable use. Due to the uniform material used for the side walls, the packaging container is easily accessible for a recycling process. Since the side walls opened to form the casing are provided with a lower peripheral edge designed in such a way that an intervention in the pallet is created, slipping of the packaging container on the pallet is prevented and the packaging container forms one together with the pallet Unit. Even when the pallets are inclined or suddenly tilted slightly, as can occur when loading pallets using a forklift, or when the envelope is lifted, the risk of the envelope detaching from the pallet and thus of the packed goods escaping is excluded . Due to the foldable arrangement of the side walls to form a casing, the fold edges of which are formed either by the foldable connection of edges of the panels abutting one another or after one of the two layers has been severed by the opposite layer, the packaging container, which has a relatively small volume of space foldable, can be set up in a few simple steps. The folded edges of the casing formed from the side walls can be produced in a simple manner, since on the one hand the foldable connections of edges of the panels abutting one another or the opposite layer remaining after severing one of the two layers are used as the folded edge. The use of a flexible plastic material for the double-wall sheet, which is stiffened by the hollow chamber arrangement, permits frequent changes. bend the fold edges formed in this way without any signs of fatigue being observed.

In an advantageous embodiment, the lower peripheral edge of the casing is designed such that the casing can be brought into releasably lockable engagement in the pallet. In particular, the packaging container has at least two extensions on the lower peripheral edge, which can be locked in the locking areas of the pallet by means of the base plate resting on the pallet within the envelope. This creates a firm connection between the shell and the pallet, which can be easily manufactured and locked.

In a further preferred embodiment, a flap is formed in at least one of the side surfaces by two cuts starting from the upper peripheral edge, the ends of which are connected in the side surface by a folded edge. The flap enables simplified access to the contents of the packaging container. In order to ensure a secure closure of the flap, it is advantageous to form at least one of the recesses of the upper peripheral edge in the region of the flap and to provide the projections of the cover plate inserted into the recesses with dovetail-like extensions lying outside the envelope. In a particularly advantageous manner, the dovetail-like extensions of the projections of the cover plate projecting beyond the width of the recesses on the outside of the casing are designed to be foldable, so that the flap can be unlocked and opened even when the cover plate is inserted by folding back the dovetail-like extensions. This means that even with several boxes stacked on top of each other, access is made to the content on the lower boxes.

In a further advantageous embodiment, the envelope has additional folding edges, which are formed parallel to the four corner edges in the end faces, in the opposite direction of folding, as a result of which the envelope can be folded to the standard size of a Euro pallet. Together with the base and cover plate, the packaging container has an inexpensive pack size with a base area that corresponds to the standard size of a Euro pallet and a thickness of six plate thicknesses.

In a further advantageous embodiment, the abutting edges are connected by a one-sided hot joining of the layers of the double-wall sheets lying inside the casing with a film made of the same material. Such a connection creates a folded edge with good bending properties and does not limit the recyclability of the packaging container through the use of the uniform material.

Further advantageous embodiments emerge from the subclaims.

The invention is to be explained and described in more detail below with reference to exemplary embodiments illustrated in the drawings. The drawings show:

Fig.l is a three-dimensional side view of an embodiment according to the invention of the shell forming the side walls;

2 shows a side view of an alternative embodiment of the casing provided with a flap; 3 shows a three-dimensional front view of the casing shown in FIG. 1;

FIG. 4 shows an end view of the casing shown in FIG. 3;

5 shows a three-dimensional schematic sketch of a pallet;

6 shows a plan view of a foot which is arranged on the end edge of the pallet and has a locking region;

Figure 7 is a sectional view of the foot taken along line I-I of Figure 6;

8 shows a three-dimensional side view of an alternative embodiment of the casing with foot-shaped extensions of the casing on the lower peripheral edge for releasably locking the casing to the pallet;

9 shows a pallet suitably designed for locking the embodiment of the casing shown in FIG. 8;

10 shows a cross section of a double wall sheet;

11 shows a cross-sectional view of a connection between two abutting edges of the double-wall sheets;

Fig.12 two plate faces along one after Cutting through the outer layer of the double-wall sheet by the remaining inner layer of the folded edge formed at an angle to one another;

13 shows a plan view of a cover plate;

14 shows a detailed view of a dovetail-like projection of the cover plate engaging in a recess of the sheath shown in cross section; and

15 shows an illustration of a section of a web double plate, in which a closing edge running transversely to the webs is closed.

An embodiment of the packaging container according to the invention described in the following comprises a sheath 10, shown in FIG. 1, which forms side walls and which is placed in a releasably locking manner in a pallet 50 shown in FIG. 5. A base plate, not shown in the figures, which can be provided with one or more handles, is placed on the pallet 50 in the casing 10, on which a cover plate 60 shown in FIG. 13 is placed.

1 shows the partially opened cover 10, which forms the side walls 15A, 15B, 15C and 15D. The side walls 15A, 15B, 15C and 15D each have an essentially rectangular plan and are separated from one another by folded edges 16A, 16B, 16C and 16D. The two end faces 15B and 15D each have folding edges 17A and 17B which run in the center thereof in the opposite direction to the folding edges 16A, 16B, 16C and 16D. The rectangular plan of the larger side surfaces 15A and 15C corresponds to the plan of a standard Euro pallet. Recesses 13A to 13H are formed on an upper peripheral edge 11 of the casing 10. The recesses 13A and 13B or 13C and 13D are each arranged in regions of the larger side surfaces 15C and 15A, and the recesses 13E and 13F or 13G and 13H are arranged in the smaller end surfaces. In the side surface 15A arranged in the foreground in FIG. 1 there is a flap 21A and 21B of the same length, starting from the upper circumferential edge 11, and a flap 22 which connects the ends of the sections 21A and 21B lying in the side surface 15A 20 provided. In the embodiment shown, the two recesses 13C and 13D are arranged in the region of the flap 20. A lower peripheral edge 12 of the casing 10 has tabs 14A, 14B and 14C on the surface 15A arranged in the foreground and (not visible in FIG. 1) on the surfaces 15B, 15C and 15D. The tabs 14A, 14B and 14C on the lower peripheral edge 12 are offset from the recesses 13C and 13D on the upper peripheral edge 11 of the casing.

The exemplary embodiment shown in FIG. 1 could be modified by changing the number and arrangement of the recesses 13 formed in the upper peripheral edge 11 of the casing 10. Furthermore, the arrangement of the flap 20 within the side face 15A could be changed, or several flaps could be provided in one side face or in several side faces. In addition, it would be possible to design the sheath 10 without the folded edges 17B and 17A arranged in the end faces 15B and 15D. 2 shows the side surface 15A of the casing 10 with a modified flap 20A. In this embodiment, the flap is formed by right-angled cuts 21A and 21B between two recesses 13C and 13D in the upper peripheral edge 11 and a folded edge 22 which connects the ends of the cuts 21A and 21B in the side face 15A . The cuts 21A and 21B have sections leading away from one another and essentially parallel to the peripheral edge, which widen the flap 20A. An additional recess 13E is formed in the upper peripheral edge 11 and lies in the area of the flap 20A.

FIG. 3 shows a three-dimensional front view of the partially opened envelope shown in FIG. 1, the lower peripheral edge 12 having dovetail-like extensions 18 as an extension of the folded edges 17A and 17B running in the end faces. 3 shows the tabs 19A and 19B formed on the lower peripheral edge of the end face 15D. In the end view of the casing 10 shown in FIG. 4, in which the end face 15D is shown, the formation of the lower peripheral edge with the extension 18 and the two tabs 19A and 19B is shown again. The waist height of the dovetail-like extension 18, which represents the distance of the lower widening of the extension from the end face 15D, is slightly higher than the material thickness of a locking area of the pallet 50 which engages in the waist.

5 shows the pallet 50 on which the casing 10 is placed vertically. The pallet 50 has recesses 54A to 54F into which the Tabs 14A, 14B, 14C and other tabs, not shown in FIG. 1, which are formed in the lower peripheral edge 12 of the casing 10, engage. The pallet 50 has an outer frame 51, on which at the corner points and in the middle of the edges of the frame are offset inwards by the thickness of the web double plate, tapered feet 52A to 52E (four feet are in the perspective Representation not shown) are appropriate. Another foot 56 is provided in the middle of the pallet. In coordination with the height of the feet 52A-52E, 56, the recesses 13A-13H are formed in the upper peripheral edge 11 of the casing 10 with a depth increased by the thickness of the cover plate compared to the height of the feet. This ensures that when the cover plate is inserted, which rests on the recesses 13A-13H, a further pallet 50 can be placed on the cover plate 60 of a packaging container, the outer edge of the frame 51 resting on the upper circumference 11 of the envelope, and at the same time the feet 52A-52E, 56 are in contact with the cover plate 60. As a result, the load of the pallet stacked on the packaging container is distributed over the entire circumferential edge 11 including the horizontal regions of the recesses 13A-13H and therefore evenly over the entire envelope 10. To reinforce and reinforce the pallet, cross-connecting webs are provided between the frame.

The two feet in the middle of the front edges of the pallet 50 (only the right foot 52B can be seen in FIG. 5) are hollow and open at the top. The foot 52B shown in FIG. 5 is shown in a plan view in FIG. 6. The reference numeral 70 designates an upper contact surface of the pallet from which itself the foot made, for example, by deep drawing is lowered. The foot 52B has a shape that tapers downward, so that a bottom surface 82 of the foot is offset inwards against the edge 57 in the upper contact surface 70. Between a peripheral edge 58 of the bottom surface 82 and the peripheral edge 57 of the upper support surface 70, a plurality of respectively slightly inclined side walls 71-80 extend. The cavity in the foot 52B between the side walls 72 and 78 is wider than the maximum width of the dovetail-shaped extension 18 of the shell. The outward-facing side surface 80 is adjoined on both sides at an obtuse angle by side surfaces 71 and 79. The outward-facing side surface 80 is arranged on the pallet in such a way that the extension 18 of the attached and fully opened casing essentially adjoins the side wall 80. In the two side walls 71 and 79 adjoining each other at an obtuse angle, recesses 59A and 59B are created in an upper region adjacent to the outwardly facing side wall 80 and essentially form a locking region of the pallet. The width of the outwardly facing side wall 80 and the size of the recesses 59A and 59B in the adjacent side walls 71 and 79 are designed in coordination with the dovetail-shaped extension 18 of the sleeve such that the laterally projecting regions of the extension 18 into the recesses 59A and 59B are insertable and a central area of the extension 18 is opposite the outwardly facing side wall 80.

FIG. 7 shows a sectional view taken along line II shown in FIG. 6. In this view, the two recesses 59A are again and 59B can be seen in the side walls 71 and 79 adjoining the outwardly facing side wall 80, the height of which corresponds approximately to the height of the widened regions of the dovetail-like extensions 18 of the shell. When the widenings of the dovetail-like extension 18 are inserted into the recesses 59A and 59B, a portion of the upper area is located between the widenings of the extension 18 and the side surface 15D of the casing (that is to say in a waist region of the dovetail-like extension 18) Support surface 70 of the pallet, as a result of which the casing is locked to the pallet in the vertical direction.

FIGS. 8 and 9 show an alternative embodiment for the casing 10 and the pallet 50 in relation to the devices for the releasably lockable engagement of the casing in the pallet. In this embodiment, in which parts that are otherwise the same as those in the embodiment shown in FIGS. 1-6 are designated by the same reference numerals, the tabs 14A and 14C formed on the lower peripheral edge have on the wider side surface 15A (and on the Side surface 15C (not shown in FIG. 8) on foot-like extensions 8LA and 81D. At the locations opposite the tabs 14A and 14C, the pallet has recesses 54A and 54C, which are the cavities of the upwardly open feet 52A and 52D. At the locations on the pallet corresponding to the foot-like extensions 81D and 81A of the shell, a region 80D and 80A with the thickness of the upper contact surface 70 projects into the recesses 54A and 54C, respectively. When the casing is inserted and fully opened, the foot-like extensions 81D and 81A of the casing are arranged under the areas 80D and 80A of the upper contact surface 70 of the pallet, so that the casing is vertically no direction is locked on the pallet.

FIGS. 8 and 9 show yet another possibility of forming a releasably lockable engagement of the casing in the pallet. With 83, an opening is shown in the middle tab 14B at the lower peripheral edge, which, when the casing is inserted and fully opened, is opposite a mandrel 84 formed in the hollow foot 52E and projecting inwards. The mandrel 84 could, for example, be an externally attached and internally projecting screw.

For all the possibilities shown above for creating a releasably lockable engagement of the casing in the pallet, the releasably lockable engagement is produced by the fact that, when the casing is not yet fully opened, its devices for locking, such as the dovetail-like extensions 18, form the foot ¬ Similar extensions 81 or the opening 83, which are arranged further inward with respect to a later end position when the casing is fully opened, are moved outwards in order to engage in the corresponding locking areas of the pallet. For this purpose, the recesses of the pallet must have a sufficient size so that the tabs and extensions in the recesses can move outwards. By completely unfolding the casing, the locking devices on the casing are brought into engagement with the locking areas formed on the pallet, such as the recesses 59A and 59B, the projections 80A and 80D of the upper contact surface 70, or the mandrel 84. After inserting the bottom into the envelope, which rests on the pallet 50, the envelope is locked in the fully opened state, thereby releasing the Engagement of the locking devices on the shell with the locking areas on the pallet is prevented.

If a lock of the case 10 on the pallet 50 is used which includes an opening 83 formed in the middle tab 14B of the case and a mandrel 84 formed in the foot 52E of the pallet, the engagement can also be created if the pallet is already in the completely unfolded state. Due to the elasticity of the relatively large side surfaces 15A and 15C, these can be bent slightly inwards, so that the tabs of the sleeve 10 can be inserted into the corresponding recesses of the pallet without the lower edge of the tab 14B on the mandrel 84 triggers. If the mandrel 84 is in a position opposite the opening 83, the deflection can be eliminated so that the dome 84 engages in the opening 83. In such an embodiment, it would be expedient to design the tab 14B with a different length than the tabs 14A and 14C. This would ensure that the casing could be placed on the pallet and locked without special skill.

10 shows in cross section a web double plate 30 which has a first layer 31, a second layer 32 and webs 33 which are formed integrally therewith and form hollow chambers 34 between the two layers 31 and 32. To show fold edges in the double-wall sheet, which will be explained later in detail, both a cut 36 cutting through the layer 31 and a cut 35 cutting through the layer 32 are shown. Instead of the double wall plate shown in FIG. 10, the plates for forming the side walls could also consist of stiffened plates with more than two layers, which could be formed, for example, from a composite of two double wall plates.

FIG. 11 shows an example of how two abutting edges of two web double plates 30A and 30B are connected to form a folded edge 37 by attaching a film 40 on one side. The film 40 preferably consists of the same material as the double-wall sheets 30A and 30B and can be melted onto one surface of the double-wall sheets 30A and 30B by the action of heat.

FIG. 12 shows the design of a folded edge 22 using the example of the flap 20 shown in a partial area and angled against the side surfaces 15A. The inner layer 32 of the double-wall sheet, which forms the side surface 15A, is severed along an intersection line 38, the lands lying between the layers also being completely severed transversely to their longitudinal extent. The non-severed, flexible outer layer 31 can be folded along the folded edge 22, so that the flap 20 can take an angle against the side surface 15A and is still connected to the side surface 15A. In this embodiment, shown using the example of the folded edge 22 of the flap 20, of a folded edge formed by an incision in the web double plate, the depth of cut must be observed very precisely, since both the inner layer 32 and the webs 33 must be completely severed without the outer Damage layer 31. This is particularly true when using a stable and tear-resistant material for the double-wall sheet. On the other hand, if, for example, a plastic such as polypropylene is used, it is sufficient to cut the inner layer 32 to produce the folded edge 22 and, if necessary, only slightly cut the webs arranged transversely to the cutting direction, with the flap being bent 20 completely tear the webs outwards to the outer layer.

In the case of the folded edges of the envelope which run along the inner webs 33 of the web double plate and which form the edges 16A, 16B, 16C and 16D, only the outer layer 31 must be severed parallel to the webs, preferably with a depth of cut exceeding the thickness of the layer 31 . In the case of the folded edges 17A and 17B in the end faces 15D and 15B of the sleeve 10, which have an opposite folding direction, the inner layer 32 is cut parallel to the webs. When these folded edges 16A-16D and 17A, 17B are formed, the risk of damage to the layer opposite the layer to be severed is substantially reduced, since there is a tolerance range for the cuts corresponding to the height of the webs before the opposite one is damaged Layer takes place.

FIG. 13 shows an example of the cover plate 60, which is adapted to the embodiment of the casing according to FIG. 1. Along the circumference 61 of the cover plate 60, dovetail-shaped projections 62A-62H are formed at the locations corresponding to the recesses 13A-13H, the waist width of which corresponds to the width of the recesses. The in the envelope The loose cover plate 60 that can be added has a size that enables a form-fitting insertion into the casing 10, with lateral sides 15A to 15D evading due to the engagement of the dovetail-like projections 62A-62H in the corresponding recesses 13A-13H is prevented.

FIG. 14 shows an example of a dovetail-like projection 62 of the cover plate 60 in an enlarged detail. The waist width of the dovetail-like projection 62 is slightly smaller than the corresponding width of the recess 13, which is formed in the web double plate shown in cross section. In a particularly advantageous embodiment, the dovetail-shaped projection has folded edges 64A and 64B, which allow extensions 65A and 65B protruding beyond the lateral edge of the recess 13, so that the dovetail-shaped projection 62 is unlocked in the recess 13 is possible. This makes it possible to open a flap fixed by such an unlockable dovetail-shaped projection without removing the cover plate. This enables access to the packaging container even with several containers stacked one on top of the other.

However, the flaps 20 can only be opened with considerable effort due to the pallets lying on them. It would therefore be advantageous, in view of easier opening of the flaps, to slightly lower the upper peripheral edge 11 in the area of the flaps 20. However, such a measure would reduce the stability and carrying capacity of the packaging container. 15 shows a section of a web double plate 30, in which a closing edge 11B running transversely to the webs forming the hollow chambers is closed by hot stamping. The end edge 11B has a continuous web, the inner layer 32 and the outer layer 31 being rounded toward one another at the transition point to the fused end edge 11B. Such a closure of the hollow chambers can be provided, for example, in order to meet the requirements of the food industry, which requires problem-free cleaning of reusable packaging containers. Since the hollow chambers open at these edge edges are closed, neither dust, vermin, water or cleaning agents etc. can get inside the panels.

Polypropylene is used as the material for the double-wall sheets which can be produced by extrusion. However, other materials which are suitable for the production of double-wall sheets or multilayer sheets stiffened by hollow chambers can also be used. The films for connecting adjacent abutting edges of the plates also consist of polypropylene or of the material used for the side plates of the casing. The bottom and top plates can be made of the same or different materials as the plates for the side walls. The euro pallets are also preferably made of plastic materials. The double-wall sheets made of polypropylene have a thickness of 2-10 mm, whereby the distance between the bars corresponds to the thickness of the sheets.

Folding in the cover at the two folded edges 17A, 17B in their end faces 15B, 15D enables the packaging container to be folded to the area dimension of a standard pallet. Together with the base plate and the cover plate, the pack size comprises a thickness of six layer thicknesses of the layer plates.

Claims

claims

1. Packaging container for transport on pallets with a base plate, side walls (15A-15D) and a cover plate (60), characterized in that the side walls (15A-15D) are formed from one or more plates which are made of layered plates with a first and second layer made of flexible material and between these webs forming hollow chambers, the plate or plates are connected to one another to form a folded edge (16A-16D, 17A, 17B) having a casing (10), the folded edges (16A -16D, 17A, 17B) are formed either by a foldable connection (40) against abutting edges of the plates or after one of the two layers has been severed by the opposite layer, that the casing has a lower one for engaging in a pallet-shaped peripheral edge (12) is provided, and that the loose base plate can be inserted into the cover and the loose cover plate can be placed on the cover.

2. Packaging container according to claim 1, characterized gekenn¬ characterized in that the peripheral edge of the envelope is such ausgebil¬ det that the envelope in the pallet in releasably arrestable engagement can be brought.

3. Packaging container according to claim 2, characterized gekenn¬ characterized in that the lower peripheral edge (12) has at least two extensions (18) in the locking areas (59A, 59B) of the pallet (50) by means of the inside of the envelope ( 10) on the pallet (50) resting base plate can be locked.

4. Packaging container according to claim 3, characterized gekenn¬ characterized in that the pallet on the extensions of the envelope opposite areas has recesses into which the extensions can be inserted and not moved to the outside when the cover is not fully opened, whereby the extensions in locking areas of the pallet that lock upward can be inserted.

5. Packaging container according to claim 3 or 4, characterized in that the extensions (18) in an extension of in a central region of opposite side surfaces (15B, 15D) arranged folding edges (17A, 17B) are provided on the lower peripheral edge (11).

6. Packaging container according to one of claims 3-5, da¬ characterized in that the extensions (18) have the shape of a dovetail.

7. Packaging container according to one of claims 3-6, characterized in that the pallet has a plurality of feet, at least two of which are hollow and open at the top and are arranged in a position opposite the extensions of the opened casing, wherein in the locking areas (59A, 59B) are formed on each of these feet.

8. Packaging container according to claim 6 and 7, characterized in that the hollow foot opposite the dovetail-shaped extensions has a side wall (80) oriented towards the outside of the extension (18) with a width corresponding to the waist width of the dovetail, to the respective width forming an obtuse angle two side walls (71, 79) connect, in each of which recesses (59A, 59B) are provided for receiving the lateral projections of the dovetail.

9. Packaging container according to one of claims 1-8, da¬ characterized in that in at least one of the Seiten¬ surfaces (15A) a flap (20) is provided, the two outgoing from the upper peripheral edge (11) cuts

(21A, 21B), the ends of which are connected in the side surface (15A) by a folded edge (22).

10. Packaging container according to one of claims 1-9, characterized in that the envelope on its upper peripheral edge (11) has a plurality of recesses (13A- 13H) of the same depth, on each of which projections (62A-62H) of the form-fitting Place the cover plate (60) that can be inserted into the opened cover.

11. Packaging container according to claim 10, characterized ge indicates that the projections (62A-62H) have the shape of dovetails, the waists of which correspond to the widths of the respectively associated recesses (13A-13H), the envelope.

12. Packaging container according to claims 9-11, da¬ characterized in that at least one of the Ausnehmun¬ gene is arranged in the region of the flap (20).

13. Packaging container according to one of claims 8-12, characterized in that the pallet has staggered feet to the recesses of the casing with a height corresponding to the depth of the recesses.

14. Packaging container according to one of claims 1-13, characterized in that the cover has six folded edges (16A-16D, 17A, 17B), four of which (16A-16D) are used to form the corner edges of the opened cover and two folded edges (17A, 17B) with the opposite direction of folding in each case the middle of two opposite side surfaces (15B, 15D) are arranged.

15. Packaging container according to one of claims 1-14, characterized in that the layer plates are web double plates, the two layers (31, 32) with interposed, in one direction parallel to each other, integrally formed webs (33) auf¬ point.

16. Packaging container according to one of claims 1-15, characterized in that the layer plates consist of poly propylene.

17. Packaging container according to one of claims 1-16, characterized in that the connection (40). there is a plastic film welded on one side along the joint of two edges on adjacent plate areas.

18. Packaging container according to one of claims 1-17, characterized in that the end edges extending transversely to the webs forming the hollow chambers are closed.

19. Packaging container according to claim 18, characterized in that the closed end edges can be produced by hot stamping.