DE20218297U1 - Transport packaging for explosive material comprises a folding outer packaging container made of card, and a non-combustible inner packaging designed as a lattice- or net-like structure forming a sleeve that can be laid flat - Google Patents

Abstract

Transport packaging (12), especially for explosive material, comprises a folding outer packaging container made of card, and at least one non-combustible inner packaging that can be laid flat. The inner packaging is designed at least partly as a lattice- or net-like structure forming a sleeve surrounding the material and not expanding in the radial direction. Preferred Features: The inner packaging is made of metal and completely surrounds the material. The inner packaging forms a container with several tilting and lockable side walls (20, 21, 23, 24, 25).

Description

A 57 170 c Applicant:

19 November 2002 Duropack Wellpappe Ansbach GmbH

c-261 Robert-Bosch-Strasse 3

91522 Ansbach

Transport packaging

The invention relates to a transport packaging, in particular for explosive packaged goods, with a foldable outer packaging container made of cardboard.

Such transport packaging is used to package a wide variety of goods. If the goods are dangerous goods, especially explosive materials, the transport of such goods is subject to special safety regulations. The latter depend, among other things, on the risk potential of the respective goods.

The object of the present invention is to design a transport packaging of the type mentioned at the outset in such a way that it can be used to reduce the risk potential of the packaged goods during their transport in a cost-effective manner and that the transport packaging can be stored in a space-saving manner.

This object is achieved according to the invention in a transport packaging of the generic type in that the transport packaging has a flattable, non-flammable inner packaging which is designed at least in regions like a grid or net and forms a sleeve which surrounds the packaged goods and cannot be expanded in the radial direction.

The risk potential of explosive goods in particular can be significantly reduced if the goods are surrounded by a non-flammable sleeve that is practically not expandable in the radial direction and is designed to be grid-like or net-like at least in some areas. In the event of a transport accident in which the goods explode, the sleeve, which cannot be noticeably expanded, absorbs a considerable part of the released

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the energy through deformation, so that the damage caused by the explosion of the packaged goods and thus the potential danger can be reduced. The extent of such damage depends, among other things, on the explosive force of the exploding packaged goods. The inner packaging, which is designed to be permeable at least in some areas, ensures that the pressure can escape in the event of an explosion, but larger fragments are held back, i.e. the fragmentation effect is reduced.

The invention also incorporates the idea that the transport packaging can be easily marked on the outside, in particular it should be ensured that the dangerous goods class relevant for the transport of the packaged goods can be clearly visible on the outside. For this purpose, the inner packaging is surrounded by the outer packaging container, which is made of cardboard, preferably corrugated cardboard, and can be printed or stuck on the outside in a cost-effective manner.

The transport packaging according to the invention also has the advantage that the transport packaging can be stored in a space-saving manner. For this purpose, it is provided that not only the outer packaging container can be folded up, but also that the inner packaging can be laid flat. In the event of not being used, the outer packaging container and the inner packaging can thus be stored in a very space-saving manner, in particular a large number of transport packaging items can be stacked on top of one another when laid flat.

According to the invention, the inner packaging is made of a non-flammable material. It has proven particularly advantageous if the

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Inner packaging is made of metal. Preferably, the inner packaging is made of wire, in particular steel wire.

The transport packaging can be made particularly easy to handle because the inner packaging is dimensionally stable. This makes it easy to place the packaged goods into the inner packaging.

In a preferred embodiment of the invention, the inner packaging comprises a rigid grid, preferably a metal grid. The inner packaging can thus be designed to be particularly weight-saving, and the permeability of the grid also ensures that in the event of a fire or a strong heat load during transport of the packaged goods, an explosion of the packaged goods results in a reduced splintering effect.

In order to ensure that the inner packaging can be laid flat when not in use, it has proven advantageous if the inner packaging forms a container with several side walls that can be pivoted and locked relative to one another. For transporting the packaged goods, the side walls can be locked relative to one another and thus form a rigid container as a whole that surrounds the packaged goods at least in the form of a sleeve. When not in use, the locking of the side walls can be released so that they can be pivoted relative to one another and the entire container can be laid flat.

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Depending on the packaged goods, a particularly strong reduction in the risk potential of the packaged goods during transport can be achieved if the inner packaging in the form of a container has at least one opening that can be closed by means of a flap, whereby the flap can be folded into the interior of the container to open the container against the effect of a restoring force. A restoring spring can be used, for example, to reset the flap. Alternatively or additionally, it can be provided that the flap swung out from its closed position is subjected to a restoring force due to its own weight. Such a design is particularly advantageous if the packaged goods have an explosive area and a non-explosive but flammable area. In the event of a fire or a strong heat load during transport of the packaged goods, the flammable area of the packaged goods is destroyed relatively quickly. If the container only encloses the explosive area of the packaged goods, while the flammable, non-explosive area protrudes from the opening of the container, the destruction of the flammable area results in the flap, which is subjected to a restoring force, closing the container and the explosive area of the packaged goods being completely surrounded by the stable inner packaging. If the packaged goods then explode as the heat load continues to increase, a large part of the energy released is absorbed by the inner packaging and the splinter effect is significantly reduced. Damage to the surrounding area can therefore be reduced.

It can also be provided that the inner packaging is not dimensionally stable on its own, for example it comprises a windable braid, in particular a metal braid. The braid can be designed in a tubular shape, so

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that the inner packaging can be pulled over the packaged goods. Alternatively, the packaged goods can be wrapped in the inner packaging, which is not dimensionally stable on its own, and the inner packaging is then locked in place. For this purpose, a locking element can be attached to the inner packaging; alternatively, a separate locking element can be used.

As already explained, the invention incorporates the idea that in the event of an explosion of the packaged goods, the inner packaging should absorb as much of the energy released as possible and reduce the splinter effect. To this end, the inner packaging is designed, at least in some areas, as a grid, mesh or net, with a mesh size of at least about 5 mm, preferably a mesh size in the range of about 5 to about 50 mm, having proven particularly advantageous.

The inner packaging can, for example, be made using wire, preferably rust-proof or non-rusting wire.

As already mentioned, the inner packaging surrounds the packaged goods at least in the manner of a sleeve. In a particularly preferred embodiment, the inner packaging completely surrounds the packaged goods, as this allows a particularly large proportion of the energy released in the event of an explosion to be absorbed and the splinter effect to be significantly reduced.

In a preferred embodiment of the invention, the transport packaging comprises several inner packagings, each of which has a

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Part of the packaged goods is surrounded in the form of a sleeve or cup. This type of design is particularly advantageous for bulky, elongated packaged goods, since the individual inner packaging can be attached to a part of the packaged goods in an easy-to-handle manner.

It can be provided that the inner packaging lies directly against the packaged goods. Alternatively, it can be provided that the inner packaging contains an insulating material that preferably lies flat against the packaged goods.

Preferably, the outer packaging container lies flat against the inner packaging.

It has proven to be advantageous if the outer packaging container is made of single or multi-layer corrugated cardboard.

The transport packaging explained above can be used for any type of packaged goods, in particular for dangerous packaged goods. The use of the transport packaging according to the invention for packaging airbags, airbag modules, gas generators and pyrotechnic items has proven to be particularly advantageous. If an airbag, for example, is accidentally triggered during transport, a significant portion of the energy released is absorbed by the inner packaging. This ensures that individual parts of the airbag are only distributed over a very limited area in the event of a triggering, so that the potential danger posed by such airbags can be significantly reduced. This in turn makes it possible to increase the safety

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to simplify safety measures for the transport of airbags so that airbags can be transported more cost-effectively.

The following description of preferred embodiments of the invention serves to explain in more detail in conjunction with the drawing. They show:

Figure 1: a schematic representation of a first embodiment of a transport packaging according to the invention;

Figure 2: a plan view of an inner packaging of the transport packaging according to Figure 1;

Figure 3: an enlarged view of portion A of Figure 2; Figure 4: a sectional view taken along line 4-4 in Figure 3;

Figure 5: a front view of the partially flattened inner packaging according to Figure 2;

Figure 6: a front view of the fully flattened inner packaging according to Figure 2;

Figure 7: a side view of an inner packaging according to a second embodiment of a transport packaging according to the invention;

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Figure 8: a diagrammatic representation of an inner packaging according to a third embodiment of a transport packaging according to the invention;

Figure 9: an enlarged view of a portion of the inner packaging according to Figure 8 and

Figure 10: a diagrammatic representation of two inner packagings according to a fourth embodiment of a transport packaging according to the invention.

Figures 1 to 6 show a first embodiment of a transport packaging according to the invention, which is designated overall by the reference numeral 12. It comprises an outer packaging container in the form of a folding box 14, which is made of single or multi-layer corrugated cardboard. In addition, a sealable inner packaging in the form of a mesh container 16 is used, into which the packaged goods 18 to be packaged, for example an airbag for motor vehicles welded into a plastic film, can be inserted. The mesh container 16 receiving the packaged goods 18 can be inserted into the folding box 14 in a form-fitting manner, so that the box lies flat against the mesh container 16 on all sides. The folding box 14 can bear on the outside an inscription known per se and therefore not shown in the drawing for identifying the packaged goods 18, in particular for identifying the relevant dangerous goods class of the packaged goods 18. This inscription can be printed on the folding box 14, alternatively a label can be glued to the outside of the folding box 14.

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As is particularly clear from Figures 1 and 2, the grid container 16 is cuboid-shaped and comprises a base 20 and a lid 21, which are pivotably mounted on a casing 22 which is rectangular in plan view and surrounds the packaged goods 18 in the circumferential direction in the form of a sleeve. The latter is formed by side walls which are connected to one another in an articulated manner, namely a front longitudinal wall 23, a rear longitudinal wall 24 and a first and a second transverse wall 25 and 26, respectively. The base 20 is pivotably mounted on a lower edge 30 of the front longitudinal wall 23 by means of two hinges 28 and 29, and the lid 21 is pivotably mounted on an upper edge 33 of the rear longitudinal wall 24 by means of two hinges 31 and 32.

The first transverse wall 25 is pivotably held on the rear longitudinal wall 24 by means of hinges 35 and 36 and on the front longitudinal wall 23 by means of hinges 37 and 38. Corresponding hinges 40, 41 and 42, 43 serve to pivotably mount the second transverse wall 26 on the front longitudinal wall 23 and the rear longitudinal wall 24.

All side walls 23, 24, 25, 26 of the casing 22, as well as the bottom 20 and the lid 21 of the mesh container 16, are made of a rigid wire mesh which, in the illustrated embodiment, has square meshes with a mesh size of approximately 16 mm.

A locking element in the form of a U-shaped clamping bracket 46 is fixed to a front longitudinal edge 45 of the lid 21 facing the front longitudinal wall 23, which clamping bracket 46 engages around an upper longitudinal edge 47 of the front longitudinal wall 23 when the grid container 16 is closed.

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A corresponding clamping bracket 49 is fixed to the rear longitudinal edge 50 of the base 20 and, when the grid container 16 is closed, engages around the lower longitudinal edge 51 of the rear longitudinal wall 24. To reinforce the grid container 16, it can be provided that the base 20 and/or the lid 21 has at least one, preferably several locking elements, for example clamping brackets, on all free side edges, i.e. not only on the rear or front longitudinal edge.

The packaged goods 18 placed in the mesh container 16 are surrounded on all sides by the rigid mesh container 16. If the packaged goods 18 stowed in the transport packaging 12 explode during transport due to a transport accident, a significant portion of the energy released during the explosion is absorbed by the mesh container 16, which cannot be elastically expanded to a noticeable extent. An explosion can occur in particular if the packaged goods 18 in the transport packaging 12 are subjected to a high level of heat stress. Such a stress initially results in the folding box 14 catching fire, with the heat generated heating up the packaged goods 18 through the mesh container 16, so that it may explode. The mesh container 16 has considerable mechanical stability, but no heat-insulating properties. This ensures that in the event of a fire or other strong thermal stress, no further heating of the packaged goods 18 can occur within the inner packaging, which could possibly result in a delayed explosion with considerably increased explosive force.

To store the transport packaging 12, the folding box 14 can be folded in the usual way after the removal of the grid container 16.

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In addition, the mesh container 16 can also be laid flat. To do this, it is only necessary to pivot the lid 21 90° upwards about the pivot axis defined by the upper edge 33 of the rear longitudinal wall 24 and the base 20 90° downwards about the pivot axis defined by the lower edge 30 of the front longitudinal wall 23, as shown in Figure 5. The casing 22 can then be pivoted to the side by pivoting the first transverse wall 25, the front longitudinal wall 23 and the second transverse wall 26 about pivot axes defined by the two front edges of the rear longitudinal wall 24, so that the entire mesh container 16 assumes a flat configuration, as is particularly clear from Figure 6. In this state, the mesh container 16 and the folded-up folding box 14 can be stored in a space-saving manner.

Figure 7 shows an alternative design of a mesh container, designated overall by the reference numeral 60, which can be used in combination with the folding box 14 to form a transport packaging. The mesh container 60 is designed similarly to the mesh container 16 explained above. In contrast to this, in the mesh container 60 a casing 65 surrounding the packaged goods 18 in the form of a sleeve is formed by the lid 63 and a base 62 aligned parallel to it at a distance from it, as well as by a front longitudinal wall 61 and a rear longitudinal wall (not shown), which are connected in an articulated manner to the base 62 and the lid 63 by means of identically designed hinges 64. A first transverse wall 68 is pivotably held on a first front edge 66 of the base 62 via hinges 67, which carries a clamping bracket 70 on its free front edge 69, which engages behind a first front edge 71 of the cover 63 to lock the first transverse wall 68.

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On the second front edge 72 of the lid 63 facing away from the first front edge 71, a second transverse wall 74 is pivotably mounted by means of hinges 73 arranged at a distance from one another. This forms a closing flap with which the lateral opening of the grid container 60 delimited by the casing 65 can be closed. In the exemplary embodiment shown, the second transverse wall 74 is designed in one piece. However, it can also be provided that the second transverse wall 74 is designed like a curtain and has several wall elements aligned parallel to one another, which can be folded into the interior of the container against a restoring force. The second transverse wall 74 is prestressed into its closed position by means of a restoring spring 75, in which it rests against a stop angle 77 fixed to the base 62, so that it can be pivoted into the interior of the grid container 60 against the effect of the restoring spring 75, as is illustrated in Figure 7 by the double arrow 76. It can also be provided that the free end of the transverse wall 74 rests against the floor 62 in the closed position, so that the stop angle 77 can then be omitted.

By pivoting the second transverse wall 74 into the interior of the mesh container 60, the packaged goods 18 to be packaged can be introduced into the mesh container 60. The packaged goods can have an area that protrudes beyond the mesh container 60, but which, like the mesh container 60, is enclosed by the folding box 14 of a corresponding size. The mesh container 60 preferably surrounds an explosive area of the packaged goods, while the area of the packaged goods that protrudes beyond the mesh container 60 is not designed to be explosive, but simply burns off in the event of a fire or strong heat load. This means that the

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In the event of a fire, the protruding area of the packaged goods is separated from the explosive area of the packaged goods, so that the second transverse wall 74 then automatically assumes its closed position due to its application of a restoring force. When it moves into the closed position, the free end of the second transverse wall 74 strikes the stop angle 77 fixed to the base 62. This ensures that the second transverse wall 74 cannot be pivoted outwards beyond its closed position from its position pivoted into the interior of the container, so that in the event of an explosion in the area of the packaged goods remaining inside the grid container 60, as large a proportion of the energy released as possible is absorbed by the grid container 60.

The grid container 60 can be laid flat in accordance with the design of the grid container 16 explained above with reference to Figures 1 to 6. To do this, it is only necessary to pivot the first transverse wall 68 about a pivot axis defined by the first front edge 66 of the base 62 into a position parallel to the base 62. In addition, the second transverse wall 74 must be pivoted far enough into the interior of the container that it rests against the inside of the lid 63. The casing 65 can then be laid flat in accordance with the casing 20 explained above, so that the grid container 60 has a very flat design for storage.

Figures 8 and 9 show a third embodiment of a sealable inner packaging which, in combination with the folding box 14 shown in Figure 1, forms a transport packaging according to the invention. In contrast to the mesh containers 16 and 60, which have an independently dimensionally stable

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8 and 9 is designed as a sleeve 80 which is not independently dimensionally stable and which surrounds a packaged item 82 in the circumferential direction. The sleeve 80 is formed by a wire mesh 84 which is designed in the form of a net with a mesh size of approximately 5 to approximately 50 mm. In the embodiment shown, the wire mesh 84 is wound around the packaged item 82 and forms a tube. Separate locking elements can be used to lock the wire mesh 82, which are known per se and are not shown in the drawing for the sake of clarity. Alternatively, it can be provided that the locking elements can be connected to the wire mesh 84, for example by means of a crimping pliers.

In the event of an explosion of the packaged goods 82, a considerable part of the energy released is absorbed by the sleeve 80, which cannot be expanded in the radial direction. The sleeve-shaped casing of the packaged goods 82 ensures that in the event of an explosion, parts of the packaged goods 82 that break apart are only distributed over a limited area. If the sleeve 80 is to be stored, it can be laid flat for this purpose due to its non-dimensionally stable design, so that it only takes up a small amount of storage space.

The use of the transport packaging according to the invention is not limited to the packaging of explosive goods. Of course, any type of goods can be packaged using the transport packaging. It can be provided that several non-flammable inner packagings with a grid, mesh or net-like structure are used, each of which surrounds a part of the goods in a sleeve-like manner. The inner packaging must

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do not lie directly against the packaged goods, rather an insulating material can be used in addition. Figure 10 shows a schematic representation of an elongated packaged goods 90, which is surrounded at its two end regions by an insulating material 91 or 92, respectively, against which in turn a sleeve 93 or 94 made of a wire mesh lies flat. The two sleeves 93 and 94, in combination with the insulating materials 91 or 92, respectively, each surround an end region of the packaged goods 90 and each represent an inner packaging that cannot be expanded in the radial direction. The packaged goods 90, surrounded by the insulating materials 91 and 92 and the sleeves 93 and 94, can be placed in a folding box of the appropriate size, which in combination with the two sleeves 93 and 94 represents a transport packaging according to the invention and can be marked on the outside.

The design shown in Figure 10 is particularly suitable for packaging goods that have explosive parts at the end. In the event of an explosion, a large part of the energy released is absorbed by the sleeves 93 and 94, so that the risk potential of the packaged goods can be reduced.

Claims (14)

1. Transport packaging, in particular for explosive packaged goods, with a foldable outer packaging container made of cardboard, characterized in that the transport packaging ( 12 ) has at least one flattable, non-flammable inner packaging ( 16 ; 60 ; 80 ; 93 ; 94 ) which is designed at least in regions like a grid or net and forms a sleeve ( 22 ; 65 ; 80 ; 93 ; 94 ) which surrounds the packaged goods ( 18 ; 82 ; 90 ) and cannot be expanded in the radial direction. 2. Transport packaging according to claim 1, characterized in that the inner packaging ( 16 ; 60 ; 80 ; 93 ; 94 ) is made of metal. 3. Transport packaging according to claim 1 or 2, characterized in that the inner packaging ( 16 ; 60 ) is independently dimensionally stable. 4. Transport packaging according to claim 3, characterized in that the inner packaging ( 16 ; 60 ) comprises a rigid grid. 5. Transport packaging according to one of the preceding claims, characterized in that the inner packaging ( 16 ; 60 ) forms a container with several side walls ( 20 , 21 , 23 , 24 , 25 , 26 ; 61 , 62 , 63 , 68 , 74 ) which can be pivoted and locked relative to one another. 6. Transport packaging according to claim 5, characterized in that the container ( 60 ) has at least one opening which can be closed by means of a flap ( 74 ), wherein the flap ( 74 ) can be folded into the interior of the container against the effect of a restoring force ( 75 ) in order to open the container ( 60 ). 7. Transport packaging according to claim 1 or 2, characterized in that the inner packaging ( 80 ; 93 ; 94 ) is not independently dimensionally stable. 8. Transport packaging according to claim 7, characterized in that the inner packaging ( 80 ; 93 ; 94 ) comprises a windable braid ( 84 ). 9. Transport packaging according to one of the preceding claims, characterized in that the grid-like or net-like region of the inner packaging ( 16 ; 60 ; 80 ; 93 ; 94 ) has a mesh size of at least about 5 mm. 10. Transport packaging according to one of the preceding claims, characterized in that the inner packaging ( 16 ; 60 ; 80 ; 93 ; 94 ) is manufactured using rust-protected or non-rusting wire. 11. Transport packaging according to one of the preceding claims, characterized in that the inner packaging ( 16 ) completely surrounds the packaged goods ( 18 ). 12. Transport packaging according to one of the preceding claims, characterized in that the transport packaging comprises several inner packagings ( 93 ; 94 ), each of which surrounds a partial area of the packaged goods ( 90 ) in the form of a sleeve or cup. 13. Transport packaging according to one of the preceding claims, characterized in that the inner packaging ( 93 ; 94 ) accommodates an insulating material ( 91 , 92 ) which rests against the packaged goods ( 90 ). 14. Transport packaging according to one of the preceding claims, characterized in that the outer packaging container ( 14 ) lies flat against the inner packaging ( 16 ; 60 ).