EP0784013A1 - Cardboard packaging container - Google Patents

Abstract

The box comprises a lid (11) which is inserted into a base (10) which has at least two opposite facing walls formed by folded flaps (32,33). The flaps are held in their folded position by the lid. The lid has at least two opposite facing insertion tabs (20,21) which fit into folds in the package side (15,16) or end (17,18) walls and formed by the folding flaps. The folding flaps or folds are fixed solely by the insertion tabs inserted into the flaps or folds. Folded units (30,31) are formed from folded flaps between a preferably closed outer wall or lid flap (24,25) and the contents of the package (13). The insertion tabs fit into a gap (37) between the outer wall or lid flaps and the inner folds or folded units.

Description

The invention relates to a packaging container made of foldable packaging material, in particular cardboard, consisting of a base part and an upper cover part which can be inserted into the base part, the base part having packing walls formed by erected folding tabs.

Folding containers, in particular folding boxes, are known in different designs. Usually, two opposing packing walls, namely side and end walls, consist of folding tabs that partially overlap each other. These are connected to one another by gluing and / or by stapling. As a result, the manufacture of such packs is labor-intensive.

The invention is based on the object of proposing a packaging container, in particular a folding carton, which, owing to the structure, enables easier production.

• a) das Basisteil weist mindestens zwei sich gegenüberliegende, durch die aufgerichteten Faltlappen gebildete Packungswände auf,
• b) die lediglich gefalteten, nicht durch Klebung oder andere Verbindungsmittel miteinander verbundenen Faltlappen sind ausschließlich durch das Abdeckteil in der aufgerichteten bzw. gefalteten Stellung gehalten,
• c) das Abdeckteil weist mindestens zwei sich gegenüberliegende Stecklaschen auf, die in durch die Faltlappen gebildete Faltungen der Packungswände, nämlich von Seitenwänden oder Stirnwänden, des Basisteils einsteckbar sind, derart, daß die Faltlappen oder Faltungen ausschließlich durch die in diese eingeführten Stecklaschen fixiert sind.

To achieve this object, the packaging container according to the invention is characterized by the following features:

• a) the base part has at least two opposing packing walls formed by the folded tabs,
• b) the merely folded folding tabs, which are not connected to one another by adhesive or other connecting means, are held in the erected or folded position exclusively by the cover part,
• c) the cover part has at least two opposite tabs which can be inserted into folds of the packing walls formed by the folding tabs, namely side walls or end walls, of the base part, in such a way that the tabs or folds are fixed exclusively by the tabs inserted into them.

The invention accordingly relates to a packaging container, in particular made of cardboard, in which any connecting means are also missing in the area of folds or folding tabs. Rather, the cover part is designed so that in the closed position of the carton the folding tabs are fixed in the upright folded position by the cover part. When the folding box is opened for the first time, for example by removing the cover, the folds are also opened. This has the surprising advantage that the contents of the package are exposed when unfolded. At least the base part can also be spread out into a flat (original) state due to the lack of connections in the area of the folding tabs, so that the packaged objects, in particular a group of small packs, are exposed on all sides.

Another surprising advantage is that the disposal of the packaging container is facilitated. At least the base part can be brought into a flat, flat shape by simply smoothing out the folding tabs. It is thereby possible to use the blanks of the packaging container, in particular the base part, for a new packaging process, so that a closed packaging cycle is given without loss of material. Furthermore, the packaging container in the flat, flat shape takes up less volume and thus space. The handling is hereby initiated.

According to the invention, the base part is designed such that folding tabs are formed in the region of opposing end walls, preferably in such a way that two groups of folding tabs are located on the inside, that is to say on the side of the end wall facing the package contents. On the outside there is a continuous, full-surface cover flap. Parts of the cover part, in particular plug-in tabs, are inserted into the area between the folding tab on the one hand and the outer cover tab on the other, in order to fix the folding position.

The upper cover part advantageously consists of a top wall with opposing, lateral, upright tabs.

The cover part can also consist of two separate cover part areas, each of which is integrally connected to the base part.

Side walls and / or end walls of the base part can have different heights in order to save material, in particular can be designed with a lower height than the package contents.

Further details of the invention relate to the design of the base part on the one hand and the cover part on the other.

Fig. 1 und Fig. 2

Teile eines Verpackungsbehälters in perspektivischer, vereinfachter Darstellung,

Fig. 3

einen geschlossenen Verpackungsbehälter in einem Längsschnitt in der Ebene III-III der Fig. 1 und Fig. 2,

Fig. 4

einen ausgebreiteten Zuschnitt für ein Basisteil,

Fig. 5

das Basisteil gemäß Fig. 4 in einer Zwischenfaltstellung, in perspektivischer Darstellung,

Fig. 6 bis Fig. 8

Darstellungen analog zu Fig. 1, Fig. 2 und Fig. 3 eines anderen Ausführungsbeispiels eines Verpackungsbehälters,

Fig. 9

einen ausgebreiteten Zuschnitt für ein Basisteil der Verpackung gemäß Fig. 6 bis Fig. 8,

Fig. 10

einen ausgebreiteten Zuschnitt eines Abdeckteils gemäß Fig. 6,

Fig. 11 bis Fig. 13

Darstellungen analog zu Fig. 1, Fig. 2 und Fig. 3 eines weiteren Ausführungsbeispiels des Verpackungsbehälters,

Fig. 14

einen ausgebreiteten Zuschnitt für ein Basisteil gemäß Fig. 12,

Fig. 15

einen ausgebreiteten Zuschnitt für ein Abdeckteil gemäß Fig. 11

Fig. 16 bis Fig. 18

Darstellungen eines weiteren Ausführungsbeispiels eines Verpackungsbehälters, analog zu Fig. 1, Fig. 2 und Fig. 3,

Fig. 19

einen ausgebreiteten Zuschnitt für ein Basisteil gemäß Fig. 17,

Fig. 20

einen Verpackungsbehälter nach einem weiteren Ausführungsbeispiel der Erfindung in perspektivischer Ansicht, und

Fig. 21

einen ausgebreiteten Zuschnitt für den Verpackungsbehälter gemäß Fig. 20.

Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows:

1 and 2

Parts of a packaging container in a perspective, simplified representation,

Fig. 3

a closed packaging container in a longitudinal section in the plane III-III of Fig. 1 and Fig. 2,

Fig. 4

a spread blank for a base part,

Fig. 5

4 in an intermediate folding position, in a perspective view,

6 to 8

Representations analogous to FIGS. 1, 2 and 3 of another exemplary embodiment of a packaging container,

Fig. 9

6 shows a spread blank for a base part of the packaging according to FIGS. 6 to 8,

Fig. 10

6 a spread cut of a cover part according to FIG. 6,

11 to 13

Representations analogous to FIGS. 1, 2 and 3 of a further exemplary embodiment of the packaging container,

Fig. 14

12 shows a spread blank for a base part according to FIG. 12,

Fig. 15

11 shows a spread blank for a cover part according to FIG. 11

16 to 18

Representations of a further exemplary embodiment of a packaging container, analogous to FIGS. 1, 2 and 3,

Fig. 19

17 shows a spread blank for a base part according to FIG. 17,

Fig. 20

a packaging container according to a further embodiment of the invention in perspective view, and

Fig. 21

a spread blank for the packaging container according to FIG. 20.

The exemplary embodiments of a packaging shown in FIGS. 1 to 19 consist of two parts, namely a lower base part 10 and an upper cover part 11. Both parts of the packaging container consist of relatively stiff but foldable material, in particular cardboard, corrugated cardboard or the like. The packaging container is intended for holding lumpy goods, in particular for (cuboid) individual packs 12. These can, for example, be (vacuum) coffee packs. The individual packs 12 are formed into a pack group 13, the individual packs 12 standing closely next to one another, in one or more rows. The pack content, namely pack group 13, is thus an overall cuboid block.

The base part 10 is designed as a container which is open at the top and has a bottom wall 14 and all-round interconnected packing walls. In the present exemplary embodiments with an elongated, cuboid shape of the base part 10, there are two mutually opposite (longer) side walls 15 and 16 and two end walls 17, 18 arranged transversely thereto. These partially consist of folding tabs which overlap one another in whole or in part. The end walls 17, 18 are formed in several layers in several areas.

The base part 10 open at the top is completely or partially closed by the cover part 11. In the exemplary embodiments shown here, the cover part 11 consists of an upper cover wall 19 and of upright plug-in tabs 20 and 21 lying opposite one another. The cover part 11 thus has a U-shaped cross section. The dimensions are preferably chosen so that the (rectangular) top wall 19 is the basic dimensions corresponds to the packaging container, that is to say covers the upper open side of the base part 10. The plug-in tabs 20, 21 have their width in the area of the connection to the top wall 19. The plug-in tabs 20, 21 are advantageously delimited with edges 22, 23 converging downwards, that is to say designed as tongues tapering downwards.

When the packaging container is closed, the base part 10 and cover part 11 are inserted into one another or connected to one another in such a way that folds of the base part 10 are held in the upright folded position by the cover part 11. Folding flaps of the base part 10, in the present case in the region of the end walls 17, 18, are not connected to one another by gluing, stitching or in any other way, but lie against one another without a connection. The tabs 20, 21 of the cover part 11 are positioned so that they fix the relevant side walls of the base part 10 - here the end walls 17, 18 - in the upright folded position. When the packaging container is put into use, only the cover part 11 is pulled off upwards. This releases the folds in the area of the end walls 17, 18. The base part 10 is moved back into a flat, spread-out starting position of the blank due to existing restoring forces or due to external intervention. The package content, that is to say the package group 13, is now freely accessible on the bottom wall 14.

In the exemplary embodiments shown, the end walls 17, 18 consist of inner folding tabs and an outer cover layer 24, 25. The latter extends over the full height and width of the end walls 17, 18 with the exception of the example according to FIGS. 7 and 8. The outer ones Cover flaps 24, 25 extend adjacent to four upright packing edges 26, 27, 28 and 29, which are formed by adjacent walls of the base part 10, namely the side walls 15, 16.

In the present case, the inner flaps, that is to say the pack contents or the pack group 13, each consist of two folding units 30, 31. Each folding unit 30, 31 in turn consists of two folding flaps 32, 33, which are completely opposite one another or partially cover. The folding units 30, 31 each consisting of two folding tabs 32, 33 lie here in a common plane, each separated by a narrow slot 34.

The folding tabs 32, 33 of each folding unit 30, 31 are geometrically different. In the exemplary embodiment according to FIGS. 1 to 5, the side walls 15, 16 and end walls 17, 18 are formed with the same height, and that in accordance with the content, that is to say with the height of the individual packs 12. In this design, folding units 30, 31 result from matching ones , same-sized folding tabs 32, 33, which lie against one another over the entire surface. The folding tabs 32, 33 are each trapezoidal (FIG. 4) and connected to one another along an obliquely or diagonally directed folding edge 35. The inner folding tabs 32 (lying against the pack contents) are each connected to the adjacent side wall 15, 16 via the upright pack edges 26 ... 29. The outer folding flaps 33 facing the cover flaps 24, 25 are each connected to the associated cover flaps 24, 25 via an edge 36.

In the erected, folded position of the base part 10 thus formed, the tabs 20, 21 are inserted into a gap 37 which is formed between the outer cover tabs 24, 25 on the one hand and the folding units 30, 31 on the other hand. The gap 37 extends over the full height of the end walls 17, 18. However, in order to avoid material constraints, the push-in tabs 20, 21 introduced into this gap 37 only extend over a partial height, that is to say they end at a clear distance from the bottom wall 14 (FIG. 3 ).

In this position, the cover part 11 acts like a clamp which holds the folded base part 10 together over its end walls 17, 18. The folds of the end walls 17, 18 cannot be opened as long as the plug-in tabs 20, 21 are in the gap 37 within the end walls 17, 18.

The base part 10 consists of a blank, which is shown as a detail in FIG. 4 in the expanded state. The blank is provided with embossed fold lines according to the folding edges to be produced. The edge edges 36 to delimit the cover flaps 24, 25 from the adjacent folding flaps 33 are continued as a folding line 38 in the region of the bottom wall 14 to form a folding edge between the bottom wall 14 and the adjacent side walls 15, 16. Correspondingly, folding lines of the packing edges 26, 27 on the one hand and 28, 29 on the other hand connected by transverse fold lines 39. These delimit the bottom wall 14 from the cover flaps 24, 25.

In order to form folding tabs 32, 33 of equal size that overlap one another in the folded position, the roughly rectangular blank is provided with rectangular cutouts 40 at the four corners. These limit the trapezoidal folding flaps 32, 33. The cutouts 40 are dimensioned such that the folding flaps 32, 33 lie opposite one another in the area of the upright slot 34. The slot 34 is delimited by upright tab edges 41, 42.

The exemplary embodiment according to FIGS. 6 to 10 differs from the previously described exemplary embodiment essentially in that the cut (FIG. 9) for the base part 10 has smaller dimensions in order to save material. The arrangement is such that parts of the end walls 17, 18 only extend over a partial area of the total height of the packaging container or the packing group 13. The outer cover flaps 24, 25 are designed with a lower construction height, in the present case they end slightly above half the height of the packaging container. The inner folding tabs 32, ie facing the package contents, extend over the full height of the packaging container and thus the side walls 15, 16. The folding tabs 33, which extend between the cover tabs 24, 25 and these folding tabs 32, are - like the cover tabs 24, 25 - trained with lower height.

The cover part 11 corresponds essentially to that of FIG. 1. The plug-in tabs 20, 21, however, have a greater height, such that they extend almost to the bottom wall 14 of the base part 10 extend (Fig. 8). Due to the construction described, the gap 37 has a smaller height than in the exemplary embodiment in FIG. 1. Upper regions of the plug-in tabs 20, 21 are thus exposed and form part of the end walls 17, 18 with the upper regions of the folding tabs 32 , 21 are designed such that they are formed over a partial region of the height with parallel and in the lower region with converging edges 22, 23 (FIG. 10).

The here also rectangular cut for the base part (FIG. 9) corresponds to the embodiment according to FIG. 4 with regard to the arrangement of fold lines. However, material strips in the width of the cutouts 40 are separated on opposite sides. This leads to different designs of the folding tabs 32, 33. The latter are significantly smaller here and only formed as a triangular gusset. The folding tabs 32 (inside) extend over the full height of the packaging.

A further alternative with reduced material expenditure for the base part 10 results from FIGS. 12 to 15. In a construction reverse to the above exemplary embodiment, the inner parts of the end walls 17, 18, namely the folding tabs 32, only extend over a partial height, about half the height of the packaging container. The folding tab 33 and the outer cover tab 24, 25, however, extend over the full height. As a result, the gap 37 is also provided for receiving the plug-in tabs 20, 21 over the full height. The cover part 11 can be designed in the same way as in the embodiment of FIG. 1.

To further save material, in this exemplary embodiment the side walls 15, 16 only extend over the partial height of the packaging, that is to say at the same height as the folding tabs 32.

A cut for a base part 10 formed in this way results from FIG. 14. Analogously to the cut according to FIG. 9, a material strip has been removed parallel to the side walls 15, 16, which material strip results from the dimensions of the cutouts 40.

As a result, the inner folding tabs 32 are designed as triangular gussets.

The embodiment according to FIGS. 16 to 19 maximizes the material savings of the base part 10. The entire base part 10 extends here over a partial height of the package contents (package group 13). The side walls 15, 16 and the end walls 17, 18 are formed at the same height here. This leads to a regular cut for the base part 10 (FIG. 19). The folding tabs 32, 33 are designed in the same way as triangular gussets of the same size, which cover one another over their entire surface in the folded position. The cut was created geometrically in that the edge regions of the cut delimited by the cutouts 40 are omitted on all sides.

In the case of this packaging, the pack group 13 in the region of the end walls 17, 18 in the upper part is covered exclusively by the plug-in tabs 20, 21. In the area of the side walls 15, 16, the individual packs 12 are exposed on the sides above the side walls 15, 16. This packaging is therefore particularly suitable for insensitive packaging goods.

The packaging shown in FIGS. 20 and 21 likewise consists of a lower base part 10 and an upper cover part 11, base part 10 and cover part 11 of the packaging according to FIGS. 20, 21, however, in contrast to the exemplary embodiments according to FIGS. 1 to 19 formed in one piece.

The base part 10 of the packaging according to FIGS. 20, 21 is designed corresponding to the base part 10 of the embodiment according to FIGS. 1 to 5. It therefore has a bottom wall 14 and all around, interconnected packing walls. The base part 10 namely has two mutually opposite side walls 15, 16 and two end walls 17, 18 arranged transversely thereto. These in turn consist in part of folding tabs which completely or partially overlap one another. The end walls 17, 18 are formed in several layers in several areas.

The base part 10 is completely or partially closed by the cover part 11. 20, 21, the cover part 11 consists of two cover part areas 43, 44. Each cover part area 43, 44 has a cover wall area 45, 46 and two opposite tabs 47, 48 and 49, 50. The cover part 10 is made accordingly from the separate cover sections 43, 44, which close the base part 10 when the packaging is folded. The dimensions are chosen such that a top wall formed from the top wall regions 45, 46 corresponds to the dimension of the bottom wall 14, that is to say completely closes the base part 10. The width of the plug-in tabs 47, 48 and 49, 50 is adapted to the width of the top wall areas 45 and 46 of the cover part area 43 and 44, respectively. The push-fit tabs 47, 49 and 48, 50 that abut one another in the folded state of the packaging therefore have the width of the top wall formed from the cover part regions 43, 44 and the width of the bottom wall 14. The push-in tabs 47..50 have rounded corners 51. The rounded corners 51 facilitate the insertion of the tabs 47..50 into the gap 37 formed between the folding units 30, 31 and the outer cover tabs 24, 25.

In the exemplary embodiment according to FIGS. 20, 21, when the packaging container is closed, the base part 10 and the cover part 11 are inserted into one another such that folds in the region of the base part 10 are held in the upright folded position by the cover part regions 43, 44. Folding flaps of the base part 10 thus lie against one another without being connected, without being connected to one another by gluing or the like. The tabs 47..49 accordingly fix the packing walls or side walls of the base part 10 in the upright folded position. When the packaging container is put into use, only the cover part regions 43, 44 have to be pulled up and folded away to the side. This releases the folds in the area of the end walls 17, 18. The base part 10 and the cover part 11 are then moved back into a flat, spread-out starting position of the blank due to existing restoring forces or due to external interventions.

The base part 10 of the packaging according to FIGS. 20, 21 has the same basic structure as the base part of the exemplary embodiment according to FIGS. 1 to 5. The end walls 17, 18 are accordingly formed from internal folding tabs and the outer cover tabs 24, 25. The outer cover flaps 24, 25 in turn extend adjacent to the four upright packaging edges 26..29. The folding tab facing the pack consists, analogously to the exemplary embodiment according to FIGS. 1 to 5, of the two folding units 30, 31, which in turn consist of two folding tabs 32, 33 each. The folding units 30, 31 formed from the folding tabs 32, 33 are in turn in a common plane and are each separated from one another by the narrow slot 34. With regard to the details relating to the folding tabs 32, 33, reference can be made to the above explanations.

Base part 10 and cover part 11 are accordingly formed from a common blank. The folding tabs 32, 33 are in turn connected to one another by transverse folding edges 35. The folding tabs 33 and the cover tabs 24, 25 are each connected to one another via the marginal edges 36. The marginal edges 36 for delimiting the cover flaps 24, 25 with respect to the adjacent folding flaps 33 are continued as fold lines 38 in the region of the bottom wall 14. Correspondingly, transverse fold lines 39 are formed in the transverse direction.

The cutting area for the base part 10 has the right-angled cutouts 40. In this regard, too, reference can be made to the above statements. The upright tab edges 41, 42 delimit the slot 34.

The top wall regions 45, 46 of the cover part regions 43, 44 of the cover part 11 adjoin laterally next to the side walls 15, 16. The top wall area 45 is adjacent to the side wall 16, the top wall area 46 is adjacent to the side wall 15. Adjacent side walls 15 and 16 and top wall areas 46 and 45 are each delimited from one another by fold lines 52. To the side of the top wall areas 45, 46 and adjacent to the folding tabs 32 are the tabs 47..50 of the cover part areas 43, 44 arranged. The cutting areas of the folding tabs 32 and tabs 47..50 are delimited from one another by separating cuts 53. The separating cuts 53 end in the area of the pack edges 26. 29 and merge into the fold lines 52 in the area of the side walls 15, 16 or top wall areas 46, 45. This ensures that the tabs 47..50 can be inserted into the folds of the end walls 17, 18 formed by the folding tabs 32, 33.

Claims (11)

Packaging container made of foldable packaging material, in particular cardboard, consisting of a base part (10) and an upper cover part (11) which can be inserted into the base part (10), the base part (10) having packing walls formed by erected folding tabs, characterized by the following features: a) the base part (10) has at least two opposing packing walls formed by the erected folding tabs (32, 33), b) the merely folded folding flaps (32, not connected to one another by adhesive or other connecting means), 33) are held in the erected or folded position exclusively by the cover part (11), c) the cover part (11) has at least two opposite tabs (20, 21; 47, 48, 49, 50) which fold into the packing walls formed by the folding tabs (32, 33), namely side walls (15, 16 ) or end walls (17, 18) of the base part (10) can be inserted in such a way that the folding tabs (32, 33) or folds are fixed only by the plug-in tabs (20, 21; 47, 48, 49, 50) inserted into them are. Packaging container according to claim 1, characterized in that folding units (30, 31) are formed from folding tabs (32, 33) between a preferably closed outer wall or a cover tab (24, 25) and the contents of the pack - pack group (13) - and the tabs (20 , 21; 47, 48, 49, 50) can be inserted into a gap (37) between the outer wall or cover flap (24, 25) and the internal folds or folding units (30, 31). Packaging container according to claim 1 or 2, characterized in that in the region of mutually opposite end walls (17, 18) folding units (30, 31) are each formed from two completely or partially overlapping folding tabs (32, 33) and between these folding units (30, 31) and an outer cover tab (24, 25) the gap (37) for inserting the plug-in tabs (20, 21; 47, 48, 49, 50) is formed. Packaging container according to claim 3 or one of the further claims, characterized in that the folding units (30, 31) extending in a common plane are each formed from two trapezoidal or triangular folding flaps (32, 33) which are arranged along an obliquely directed folding edge ( 35) are connected to one another, an inner folding flap (32) being connected to an adjacent side wall (15, 16) and an outer folding flap (33) being connected to the adjacent cover flap (24, 25). Packaging container according to claim 1 or one of the further claims, characterized in that the cover part (11) consists of a U-shaped folded blank with an upper cover wall (19) and downward plug-in tabs (20, 21) formed at both ends, wherein the top wall (19) preferably has the outline dimensions of the base part (10) and the plug-in tabs (20, 21) adjoining in the same width have edges (22, 23) converging downwards. Packaging container according to one or more of claims 1 to 4, characterized in that the cover part (11) and base part (10) are formed from a common blank, the cover part (11) consisting of two cover part regions (43, 44) which are separated from one another are. Packaging container according to claim 6, characterized in that the cover part regions (43, 44) are each arranged adjacent to a side wall (15, 16) of the base part (10) and are connected in one piece to the latter. Packaging container according to claim 6 or 7, characterized in that each cover part area (43, 44) has two opposite tabs (47, 48, 49, 50) and a top wall area (45, 46), the top wall areas (45, 46) including the side walls (15, 16) are connected and bounded by fold lines (52). Packaging container according to claim 1 or one of the further claims, characterized in that the walls of the base part (10) have a lower overall height than the package content - package group (13). Packaging container according to claim 9, characterized in that parts of the end walls (17, 18) have a lower height than the contents of the package, in particular the inner folding units (30, 31) and / or the outer cover flaps (24, 25). Packaging container according to claim 9, characterized in that the base part (10) has a lower overall height than the pack content, upper regions of the pack content in the region of the end walls (17, 18) through the plug-in tabs (20, 21) of the cover part (11) covered and the upper areas of the package contents are exposed above the side walls (15, 16).

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