DD160406A5 - STACKABLE CONTAINER - Google Patents

Abstract

1. A stackable container (1) which has been erected from a blank and which has a quadrilateral container floor (2) which is surrounded on all sides by an upwardly conically opening container wall which, in its corner regions, has triangular fold portions (8-14) which extend from the corners (7) of the container floor (2) and which, partly over themselves and partly over quadrilateral wall regions (3, 4, 5, 6) disposed therebetween, form transitional portions between these wall regions which are folded so as to comprise three layers of material, characterized in that seven fold portions (8-14) are provided in each corner region, adjacent fold margins (17, 21 ; 20, 24 ; 23, 27) being contiguous, and in that the container (1) has a capacity of at least 56 litres.

Description

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Berlin, 29.1.1981 AP B 65 D / 225 58 327/25/38

Stackable container Field of application of the invention

The invention relates to a folded from a blank stackable container with a container bottom, which is surrounded on all sides by an upwardly conically opening container wall, and with triangular Faltteilchen with four arranged at the corners of the container bottom common tips extending in the connection point between the container bottom and two ^w are andfeidern and folded over to three layers of material form the transition between the wall panels.

Characteristic of the known technical solutions

Containers of this type usually have three triangular folding parts at each corner. With the help of three such folding parts, however, no great stability can apparently be achieved. In any case, the prior art containers of this type usually have a folded edge or a similar edge reinforcement. Thus, for example, in the description of a previously known container (DE-OS 1,810,600, US-PS 3,536,248), the possibility of auditing without such a fold edge, although mentioned; shown and explained in detail but only the Auöführungsbeispiel with such a seam. Of course, the structure and also the production of the container is complicated by this fold edge · This prior art container also has only a small size

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(one should be able to eat directly from it); it is evidently not constructed so that its dimensions can exceed a certain small size.

Object of the invention

The aim of the invention is to increase the utility value properties of stackable containers in a cost-effective manner.

Explanation of the essence of the invention

The object of the invention is to develop a container of the type mentioned, which has a simple structure and which has sufficient stability even with larger dimensions for the storage of liquids and other flowable and pourable materials.

The solution according to the invention is that seven folding parts are provided at each corner, wherein on the same side of the same folding part located folding edges touch after folding.

An essential merit of the invention is therefore that it has been recognized that the stability of the container can be increased to a significant extent by seven folding parts. Although there are only three layers of material at the corners as in the prior art container also one above the other. Nevertheless, the stability is considerably / - larger, which is based primarily on the large number of creases, greater ^T hese

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Corner stability is of course extremely important for filled containers. By the creases and the three superimposed edges of material, the pressure exerted by stacked filled containers on the corner, distributed to the adjacent side surfaces, as far as it is not absorbed by the corner areas themselves. It has further been shown that the flexibility of the corner region has increased due to the greater number of gaps. Of course, the corner area must be stable; However, it should also have a degree of compliance, so that it is not damaged in a small impact. This compliance is effected by opening the gaps a little at this point with appropriate exercise of force.

Inside at two points and outside at one point, the edges of the Paltteile be folded on each other. The gap edges on folded-fep areas touch each other. For this reason, it is very difficult for material to penetrate behind the fold or not to penetrate it at all. It is thus prevented that the fold is softened or otherwise damaged. It has been found that the container according to the invention can have rather large dimensions, even if it consists of paper or cardboard. Since paper or paperboard as a container material for the storage vielter ^G hemikalien is permitted, are not approved for plastic or metal, a simple container provided by the invention if it is preferably made of paper or paperboard, which also suitable for the storage of aggressive chemicals is. Nevertheless, the container is very stable and reliable, what for the storage of such

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Chemicals must of course be · The container still has the advantage that the folding can be performed in a relatively simple manner along straight fold lines _f so that the unfolding of the container can be performed by machine.

Although the container is preferably made of paper or paperboard, it can of course be made of other materials, such. As plastic or metal, are made ·

Is the container made of cardboard so it can be in? Advantageously, the stability can be greatly increased when multilayer board is used for the production. The container could be unfolded after hardening of the glue of the multilayer board. However, if it is unfolded before the setting of the glue of the multilayer board, no additional gluing is necessary in order to keep the folding stable even after removing the folding pressure or the folding tools. It has proven to be particularly advantageous to produce the container from five-layer cardboard. A particularly favorable material is Scandinavian Kraftliner or Ratronpapier. The material thickness of these materials should be about 300 g / m2 and 0.5 mm per layer to obtain a container that is particularly suitable for the desired purpose. The layers may be glued with polyvinyl alcohol film, dispersion or hot melt adhesive; These materials have proven to be particularly well suited. Of course, however, other glues are possible.

The advantages of the invention can be fully exploited if the capacity is at least

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j is 56 liters. On the one hand, a capacity of 56 liters fully exploits the advantages of the container according to the invention and, on the other hand, it is compatible with the forms of packaging. Even for larger capacity of the container can be used very cheap, which of course does not mean that it is not possible, the container also

for smaller capacities. '

In order to further increase the stability of the container au and to protect the upper edge, it may be provided with a flanged metal strip whose material thickness is preferably about 0.8 mm. Of course, this metal band is also prevented that the folding can open again.

The container may be provided below the land with a hand parallel, inwardly projecting bead. Also by this measure, the stability is further increased. At the same time can be formed by the projection, however, when the container is provided with a lid, a ^il uflage for the lid, which is then held secured against displacement on the container, - ^ Abei can be provided between the lid and projection of the bead still a seal his.

If the lid is fastened with a clamping ring, the contents can be locked in theft-proof way. In addition, the possibility is created that the container can be sealed by customs.

Lids are primarily made of flat wood, chipboard, metal, plastic, paper or similar

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Thought materials. However, the lid can also be another, slightly smaller container, which then fits on the upper hand in the larger container and rests on the projection of the bead. Of course, the capacity of the container is increased in this way.

The container according to the invention has proven to be very stable. If it is made of five-layer Scandinavian kraftliner with the above-mentioned material thicknesses, it can carry three times its own weight as well as the filling.

The invention will be described in more detail in several embodiments with reference to the accompanying drawings. Ss show:

1 shows an embodiment of the container according to the invention in a perspective view;

Fig. 2 is a plan view of the carton from which the container is made, with fold lines drawn in;

Fig. 3: a cross section along the plane III of Fig. 1;

4 shows a cross section along the plane IY of Fig. 1st

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The container 1 has a container bottom 2 and four wall screens 3 to 6. From the corners 7 of the container bottom, folding parts 8 to 14 are assumed, which have the shape of pointed triangles and widen upwards to the wall.

The folding parts 8 to 14 are shown in Fig. 2, which shows a material blank with the fold lines. ^ ¹ Ie fold lines are shown in solid lines, while the lines on which the fold lines come to lie after folding, are dashed. In the unfolded state, the field 3 is folded around the fold line 15 about the fold line 15 not quite 90 out of the drawing plane onto the observer around the fold line 15 * The same applies to the # a.ndf eider 4, 5 and 6. The folding of the Folding parts 3 to is made as follows:

The folding part 8 is folded around the folded edge 17 around back so that its folding edge 18 comes to lie behind the fold line 16. Subsequently, the folding part 9 is folded back to the front around the edge 13, so that its fold line 19 comes to lie below the folded edge 17. Subsequently, the folding part 10 is folded to the front about the - ^AItkante 20 until its folding edge 21 comes to lie on the fold line 19 of the folding part 9. Now, the folding part 11 is folded around the folding edge 21 in the other direction, so that its fold line 22 comes to lie on the folding edge 20. Then, the folding part 12 is folded to the rear around the folding edge 23, so that its folding edge 24 also comes to rest behind the i'altlinie 22 of the F _a part 11, and immediately adjacent to the folding edge 20. Then the

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Folding part 13 again folded to the front around the folding edge 24, so that his FaItlinie 25 is behind the folding edge 23, Now the folding part 14 is folded around the folding edge 26 to the front, so that its folding edge 27 comes to rest on the fold line 25. -Finally, the wall panel 6 is folded around the folding edge 27, so that the fold line 28 comes to lie on the folding edge 26.

The result of the folding is drawn once again in section in FIG. In this case, a four-layer material is shown. As already mentioned, a five-layer material has proved to be particularly advantageous; however, a greater or lesser number of layers may be used. In the area of folding, three layers of the multilayer material lie one above the other. As shown here, folding edges 29, 30, 31 located on the same side of the same folding part after the folding abut each other. This prevents that here the stored material can penetrate into the folds.

In Fig. 4 it is shown that at the upper edge of the container, a metal band 32 is fixed, which is bent in a U-shape around the container edge. In the metal band and the container wall, a Si _C 3 e 33 is pressed inwards, which runs parallel to the hand and runs around the entire edge. By this thickness 33 is a bearing surface for a lid

34 created at its edge 36 still with a seal

35, which is glued to the corner 34. Around

all - ^ ehälterrand a tensioning ring is still wrapped 37 which engages in the ^a icke and engages the lid so that the ^ eckel is securely held. This type of closure prevents leakage and theft. In addition, this type of closure can be sealed for customs or other purposes.

Claims (17)

1. A stackable container which can be unfolded from a blank, with a container bottom, which is surrounded on all sides by an upwardly conically opening container wall, and with triangular Paltteilen with four arranged at the corners of the container bottom common tips, which in ^v connection point between container base and two wall panels are located and the superimposed folded into three layers of material the "transition between wall panels form, characterized in that at every corner (7) seven Paltteile are provided (8 to 14), located on the same ^ö eite the same Paltteiles (9 ; 11, 13) are in contact after splitting. 2 25 1 6 0 _ ^ f_ y \ o - 29.1.1981 AP B 65 D / 2 25 -1 60 58 327/25/38 2. Stackable container according to item 1, characterized in that it is made of cardboard. 2 25 1 6 0 _} #_ q - 29.1. AP B 65 D / 225 1 SO 58 327/25/38 invention claim 3. Stackable container according to item 1 or 2, characterized in that it is made of multilayer cardboard. 4. Stackable peeler according to item 3, characterized in that it is unfolded before hardening of the glue of the multilayer cardboard. 5. A stackable fabric according to any one of items 1 to 4, characterized in that it is made of five-layered cardboard. 6. Stackable container according to one of the items 1 to 5, characterized in that it is made of Scandinavian Kraftliner or Natronpapier. 7. Stackable container according to item 6, characterized in that the material thickness per layer is about 300 g / qm and 0.5 mm. 8. Stackable container according to one of the items 3 to 7, characterized in that the layers are glued with Polyvinylalkoholleim, dispersion or hot melt adhesive. 9. A stackable container according to any one of items 1 to 8, characterized in that it has a capacity of at least 56 liters. 10. Stackable container according to one of the items 1 to 9, characterized in that the = upper edge with a flanged metal strip (32) is provided. 11. Stackable container according to item 10, characterized in that the material thickness of the metal strip (32) is approximately 0.8 mm. 12. A stackable container according to item 10 or 11, characterized in that it is provided below the edge with a parallel edge, inwardly projecting bead (33). 225 1 60 ^ _M -. 01/29/1981 AP B 65 D / 225 58 327/25/38 13. A stackable container according to any one of items 1 to 12, characterized in that it is provided with a lid (34) * 14. ^ö tapelbarer container according to item 12, or 13, characterized in that the lid (34) rests on the projection of the bead (33). 15. Stackable container according to item 14, characterized in that between the cover (34) and projection of the bead (33) a seal (35) is provided « 16. A stackable container according to any of items 13 to 15, characterized in that the D _ec angle (34) with a clamping ring (37) is attached. 17 · Stackable container according to any one of items 14 to 16, characterized in that the lid (34) is another, slightly smaller container. For this .3 pages drawings