Dimensionally stable food container having folded planar composite, element of non-folded planar composite, first wall region and second wall region

Abstract

The present invention relates to a container (1100) comprising an element (701) of a folded planar composite (805) and a non-folded planar composite (805) wherein the folded planar composite (805) comprises a carrier layer (1404) and forms, together with the element (701), a container wall (1101) comprising a first wall region (1502) and a second wall region (1503); wherein the first wall region (1502) comprises first to third plies (1504, 1505, 1506) of said composite; wherein the second ply (1505) is joined to the third ply (1506) in the first wall region (1502); wherein the second wall region (1503) comprises first to third plies (1504, 1505, 1506); wherein the first ply (1504) is joined to the second ply (1505), and the second ply (1505) is joined to the third ply (1506) in the second wall region (1503); wherein the layer thickness of the carrier layer (1404) in the first wall region (1502) in the third ply (1506) is greater than the layer thickness in the first ply (1504) or the second ply (1505); wherein the layer thickness of the carrier layer (1404) in the second wall region (1503) in the second ply (1505) is smaller than the layer thickness in the first ply (1504) or the third ply (1506); wherein the first ply (1504) is joined on its inner side to the element (701) of the non-folded planar composite (805) in the first wall region (1502) or the second wall region (1503). The invention further relates to a method (1700) of manufacturing a container (1100) and to the use of a container precursor (400) and an element (701) of a non-folded planar composite (805).

Description

[0001] The present invention relates to a container comprising

[0002] - folded planar complexes, and

[0003] - Elements of non-folded planar complexes;

[0004] wherein the folded planar complex

[0005] - comprising a carrier layer, and

[0006] - forming together with the elements of the non-folded planar composite a container wall at least partially surrounding the interior of the container;

[0007] wherein the container wall comprises a first wall region and a second wall region; wherein the first wall region comprises a first ply of the folded planar composite, a second ply of the folded planar composite and a third ply of the folded planar composite as superimposed layers of a first layer sequence in a direction from the interior of the container to the outside; wherein the second ply is joined to the third ply in the first wall region; wherein the second wall region comprises the first ply, the second ply and the third ply as superimposed layers of a second layer sequence in a direction from the interior of the container to the outside; wherein the first ply is joined to the second ply in the second wall region and the second ply is joined to the third ply in the second wall region; wherein the layer thickness of the carrier layer in the third ply in the first wall region is greater than the layer thickness in the first ply, or greater than the layer thickness in the second ply, or greater than the layer thickness in each of them; wherein the layer thickness of the carrier layer in the second ply in the second wall region is less than the layer thickness in the first ply, or less than the layer thickness in the third ply, or less than the layer thickness in each of them; wherein the first ply is joined to an element of the non-folded planar composite on its inner side facing the interior of the container in the first wall region or in the second wall region or in each of the two. The invention further relates to a method for producing a container, and to the use of a container precursor and an element of a non-folded planar composite.

[0008] For some time, food has been preserved by storing it in cans or in bottles closed by lids, whether they are food for human consumption or animal feed products. In this case, the shelf life can be increased by first sterilizing the food and the container (bottle or can in this case) individually and very fully in each case, then introducing the food into the container and sealing the container. However, these measures to increase the shelf life of food, which have been tried and tested for a long time, have a series of disadvantages, such as the need to sterilize again later. Cans and bottles have the disadvantage that it is impossible to achieve very dense and space-saving storage because they are basically cylindrical. In addition, cans and bottles have a considerable inherent weight, so that the energy consumption in transportation increases. In addition, the production of glass, tinplate or aluminum, even when the raw materials used for this purpose are recycled, also requires a relatively high energy consumption. In the case of bottles, an aggravating factor is the increase in transportation expenses. Bottles are usually prefabricated in glass factories and then must be transported to the place where the food is distributed using a considerable transportation volume. In addition, bottles and cans can only be opened with considerable effort or with the help of tools and therefore in a quite laborious manner. In the case of cans, there is a high risk of injuries caused by sharp edges that appear when opening. In the case of bottles, it is a recurring situation that broken glass enters the food during the filling or opening of the already filled bottle, which in the worst case can cause internal injuries when the food is consumed. In addition, both cans and bottles have to be labeled in order to identify and promote the food contents. Bottles and cans cannot be directly printed with information and promotional information. Therefore, in addition to the actual printing, a substrate for this purpose, paper or a suitable film, is required, as well as fixing means, adhesives or sealants.

[0009] Other packaging systems are known from the prior art for the long-term storage of foods with minimal damage. These are containers made of planar or sheet-like composites, which are also often referred to as laminates. Such laminates usually consist of a thermoplastic layer, a carrier layer, usually made of cardboard or paper, which imparts dimensional stability to the container, an adhesion promoter layer, a barrier layer and a further plastic layer. Due to the dimensional stability imparted to the containers made of the laminate by the carrier layer, these containers are considered to be a further development of the above-mentioned bottles and cans compared to film bags and pouches.

[0010] Although such food containers made of laminates can be produced and filled in the same machine and thus in one production run, there is still the transportation effort for supplying the filled containers to the retail trade. Various disadvantages of prior art containers have arisen against the background of such long-distance transportation.

[0011] In the preparation of the aforementioned food container, the laminate is folded several times, wherein the opposite ends of the laminate are sealed one to the other, in order to form a shell-shaped or tubular precursor of a closed container in the first case. The end regions sealed one to the other form a longitudinal seam, which is also present in the container. On the inside and outside of the container, this longitudinal seam contains the cut edges of the laminate, through which moisture can penetrate into the layer structure of the laminate, in particular the carrier layer, which usually consists of cardboard or paper. On the inside of the longitudinal seam, moisture intrusion must be prevented, because the container is designed to accommodate food containing water. For this reason, in the prior art, the border comprising the inner edge of the laminate is usually skived and hem-sealed. The hem-sealing protects the inner cut edges of the longitudinal seam from moisture.

[0012] For containers whose container wall consists of only one sheet of laminate, the ingress of moisture on the outside of the longitudinal seam is generally not critical for the performance of the container. This is different for containers which, in addition to the laminate, also include as part of the container wall additional components sealed or glued to the laminate boundary, such as injection-molded components. Here, the aforementioned boundary includes the cut edge of the laminate. At this cut edge, the cross section of the longitudinal seam of the container is exposed to the environment. In this case, it has been observed that the ingress of moisture, in combination with the vibrations to which the container is subjected during long-distance transportation on the road, has an adverse effect on the tightness of the container and therefore on the shelf life.

[0013] Furthermore, in order to make the transport to the retailer as efficient as possible, it is desirable to be able to stack as many containers as possible in one package, i.e. to use as little reinforcing transport material as possible. This stackability is limited by the compression stability of the container, i.e. by the maximum weight that can be applied to the container without destroying its mechanical integrity due to compression. In the prior art, this limitation usually means that the existing transport volume cannot be used efficiently.

[0014] In general, one object of the present invention is to at least partially overcome the disadvantages presented by the prior art.

[0015] A further object of the present invention is to provide a dimensionally stable food container made from a laminate which features an improved shelf life, in particular after transporting the container over long distances on the road.

[0016] A further object of the invention is to provide a dimensionally stable food container made of a laminate which, in particular by virtue of good stacking behavior, enables the most efficient utilization of the transport volume when supplying such food containers.

[0017] Furthermore, it is an object of the present invention to provide a dimensionally stable food container made of a laminate which can be produced in large quantities in a filling machine with as few production interruptions as possible.

[0018] According to another object of the invention, one of the above-mentioned advantageous food containers is particularly suitable for stationary household use, in particular due to its relatively large capacity. According to another object of the invention, one of the above-mentioned advantageous food containers is particularly suitable for mobile use, in particular due to its good grip stiffness.

[0019] According to a further object of the invention, one of the above-mentioned advantageous food containers is additionally characterized by good standing stability of the individual containers.

[0020] Any embodiment of the present invention contributes to at least partially achieving at least one, preferably more than one, of the above-mentioned objects.

[0021] A first embodiment of the present invention is a container comprising

[0022] - folded planar complexes, and

[0023] - Elements of non-folded planar complexes;

[0024] wherein the folded planar complex

[0025] - comprising a carrier layer, and

[0026] - together with the elements of the non-folded planar composite, form a container wall which at least partially, preferably completely, surrounds the interior of the container;

[0027] wherein the container wall comprises a first wall region and a second wall region; wherein the first wall region comprises, preferably consists of, a first layer sheet of the folded planar composite, a second layer sheet of the folded planar composite and a third layer sheet of the folded planar composite as a superposition of a first layer sequence in a direction from the interior of the container to the outside; wherein the second layer sheet is joined to the third layer sheet in the first wall region; wherein the second wall region comprises, preferably consists of, a first layer sheet, a second layer sheet and a third layer sheet as a superposition of a second layer sequence in a direction from the interior of the container to the outside; wherein the first layer sheet is joined to the second layer sheet in the second wall region and the second layer sheet is joined to the third layer sheet in the second wall region; wherein the layer thickness of the carrier layer in the third layer sheet in the first wall region is greater than the layer thickness in the first layer sheet, or greater than the layer thickness in the second layer sheet, or greater than the layer thickness in each of them; wherein the layer thickness of the carrier layer in the second layer sheet in the second wall region is less than the layer thickness in the first layer sheet, or less than the layer thickness in the third layer, or less than the layer thickness in each of them; wherein the first layer sheet is joined to an element of the non-folded planar composite on its inner side facing the interior of the container in the first wall region or in the second wall region or in each of these two.

[0028] Preferably, the container according to the present invention is one selected from a closed container, a food container, a dimensionally stable container and a liquid-tight container, or a combination of at least two thereof.

[0029] In a preferred embodiment of the container, the folded planar composite further comprises an inner polymer layer; wherein the inner polymer layer is superimposed on the carrier layer on the first side of the carrier layer so that the inner polymer layer faces the interior of the container relative to the carrier layer in the first layer and the third layer. This preferred embodiment is the second embodiment of the present invention, which is preferably dependent on the first embodiment of the present invention.

[0030] In a further preferred embodiment of the container, the folded planar composite further comprises a barrier layer; wherein the barrier layer is superimposed on the carrier layer on the first side of the carrier layer so that the barrier layer faces the interior of the container relative to the carrier layer in the first ply and the third ply. This preferred embodiment is the third embodiment of the present invention, which preferably depends on the first or second embodiment of the present invention.

[0031] In a further preferred embodiment of the container, the barrier layer is arranged between the carrier layer and the inner polymer layer.This preferred embodiment is the fourth embodiment of the invention, which preferably depends on the third embodiment of the invention.

[0032] In a further preferred embodiment of the container, the folded planar composite further comprises an outer polymer layer; wherein the outer polymer layer is superimposed on the carrier layer on the other side of the carrier layer so that the outer polymer layer faces away from the container interior relative to the carrier layer in the third layer. This preferred embodiment is the fifth embodiment of the present invention, which preferably depends on any of the previous embodiments of the present invention.

[0033] Preferably, the outer polymer layer is adjacent to the carrier layer. The outer polymer layer preferably contains at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, most preferably at least 90% by weight of a polyolefin, preferably polyethylene or polypropylene or both, based in each case on the weight of the outer polymer layer. Preferably, the outer polymer layer is the outermost layer of the planar composite. This means that in any ply of the planar composite no layer of this ply of the planar composite is superimposed on the outer polymer layer on the side of the outer polymer layer facing away from the carrier layer.

[0034] In a further preferred embodiment of the container, the outer polymer layer comprises at least 50 wt.-%, preferably at least 60 wt.-%, more preferably at least 70 wt.-%, even more preferably at least 80 wt.-%, most preferably at least 90 wt.-% LDPE, each based on the weight of the outer polymer layer. This preferred embodiment is the sixth embodiment of the present invention, which preferably depends on the fifth embodiment of the present invention.

[0035] In a further preferred embodiment of the container, the folded planar composite additionally comprises an intermediate polymer layer; wherein the intermediate polymer is arranged between the carrier layer and the barrier layer. This preferred embodiment is the seventh embodiment of the present invention, which preferably depends on any one of the third to sixth embodiments of the present invention.

[0036] In a further preferred embodiment of the container, the folded planar composite further comprises a color application; wherein the color application is superimposed on the carrier layer on the other side of the carrier layer so that the color application is in the third ply facing away from the interior of the container relative to the carrier layer. This preferred embodiment is the eighth embodiment of the present invention, which preferably depends on any of the previous embodiments of the present invention.

[0037] Preferably, the color application is adjacent to the carrier layer. Alternatively or additionally preferably, the color application is adjacent to the outer polymer layer. A preferred color application is a printed color application. Preferably, the color application comprises at least one colorant, more preferably at least 2, more preferably at least 3, more preferably at least 4, even more preferably at least 5, most preferably at least 6 colorants. The above colorants preferably each have a different color. Preferably, the color application comprises at least 4% by weight, more preferably at least 6% by weight, more preferably at least 8% by weight of at least one colorant, in each case based on the weight of the color application.

[0038] In a further preferred embodiment of the container, the color is applied superimposed on the outer polymer layer on the side of the outer polymer layer facing away from the carrier layer.This preferred embodiment is the ninth embodiment of the invention, which preferably depends on the eighth embodiment of the invention.

[0039] Preferably, the color application is not superimposed by any layer of the same ply of the folded planar composite on its side facing away from the outer polymer layer.Alternatively or additionally preferably, the color application is printed on the outer polymer layer.

[0040] In a further preferred embodiment of the container, the color application is arranged between the carrier layer and the outer polymer layer. This preferred embodiment is the tenth embodiment of the invention, which preferably depends on the eighth embodiment of the invention. Preferably, the color application is printed on the carrier layer.

[0041] In a further preferred embodiment of the container, the inner side of the folded planar composite - in the first ply - faces towards the interior of the container,

[0042] - in the second ply facing away from the interior of the container, and

[0043] - In the third ply facing the interior of the container.

[0044] This preferred embodiment is the eleventh embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0045] In a further preferred embodiment of the container, a layer selected from the inner polymer layer, the middle polymer layer and the outer polymer layer, or a combination of at least two thereof, comprises a polyolefin, preferably consists of a polyolefin, preferably polyethylene or polypropylene or a mixture of the two. This preferred embodiment is the twelfth embodiment of the present invention, which preferably depends on any one of the second to eleventh embodiments of the present invention.

[0046] Preferably, a layer selected from the group consisting of the inner polymer layer, the intermediate polymer layer and the outer polymer layer, or a combination of at least two thereof, comprises a polyolefin, preferably polyethylene or polypropylene or a blend thereof, in a proportion of at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, most preferably at least 90% by weight, in each case based on the weight of the respective layer.

[0047] In a further preferred embodiment of the container, the carrier layer comprises, preferably consists of, one selected from cardboard, paperboard and paper, or a combination of at least two thereof. This preferred embodiment is the thirteenth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0048] The terms "cardboard", "paperboard" and "paper" are used herein according to the definitions in standard DIN 6735:2010. In addition, cardboard is preferably a material having a combination of the properties of cardboard and paper. Furthermore, cardboard preferably has a density of 150 to 600 g / m 2 Basis weight within the range of.

[0049] In a further preferred embodiment of the container, the barrier layer comprises, preferably consists of, one selected from plastic, metal and metal oxide, or a combination of at least two thereof. This preferred embodiment is the fourteenth embodiment of the present invention, which preferably depends on any one of the third to thirteenth embodiments of the present invention.

[0050] In a further preferred embodiment of the container, the container contains a food product.This preferred embodiment is a fifteenth embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0051] In a further preferred embodiment of the container, the folded planar composite has at least 2 folds, preferably at least 3 folds, more preferably at least 4 folds. This preferred embodiment is a sixteenth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0052] In a further preferred embodiment of the container, wherein the folded planar composite comprises a first longitudinal boundary and another longitudinal boundary opposite to the first longitudinal boundary in a circumferential direction of the container perpendicular to the length of the container; wherein the first longitudinal boundary is joined to the other longitudinal boundary to form a longitudinal seam of the container. This preferred embodiment is the seventeenth embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0053] Preferably, the first longitudinal border is joined to the further longitudinal border in the first wall region and the second wall region, or in the first wall region, the second wall region and the third wall region, to form a longitudinal seam of the container.

[0054] In a further preferred embodiment of the container, the capacity of the container interior is 100 to 2000 ml, preferably 100 to 1500 ml, more preferably 100 to 1200 ml, more preferably 100 to 1000 ml, more preferably 100 to 900 ml, more preferably 100 to 800 ml, more preferably 100 to 700 ml, more preferably 100 to 600 ml, more preferably 100 to 500 ml, more preferably 100 to 480 ml, more preferably 100 to 460 ml. More preferably, the present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium. The present invention relates to a 180 to 190 ml liquid medium.

[0055] Further preferably, the capacity of the container interior is in the range of 150 to 2000ml, more preferably 200 to 2000ml, more preferably 250 to 2000ml, more preferably 300 to 2000ml, more preferably 350 to 2000ml, more preferably 400 to 2000ml, more preferably 420 to 2000ml, more preferably 440 to 2000ml, more preferably 460 to 2000ml, more preferably 480 to 2000ml, more preferably 480 to 1800ml, more preferably 480 to 1600ml, more preferably 480 to 1400ml, more preferably 480 to 1200ml, most preferably 480 to 1150ml, more preferably 480 to 1100ml, and still more preferably 490 to 1100ml.

[0056] In a further preferred embodiment of the container, the first wall region is adjacent to the second wall region.This preferred embodiment is a nineteenth embodiment of the invention, which preferably depends on any of the preceding embodiments of the invention.

[0057] In a further preferred embodiment of the container, the layer thickness of the carrier layer in the first ply is smaller in the first wall region than in the second wall region. This preferred embodiment is the twentieth embodiment of the invention, which preferably depends on any of the preceding embodiments of the invention.

[0058] Preferably, the layer thickness of the carrier layer in the first ply in the first wall region is 0.05 to 0.9 times, preferably 0.1 to 0.85 times, more preferably 0.2 to 0.85 times, more preferably 0.3 to 0.85 times, more preferably 0.4 to 0.85 times, even more preferably 0.5 to 0.8 times, most preferably 0.6 to 0.75 times. Alternatively or additionally preferably, the layer thickness of the carrier layer in the first ply in the second wall region is 1.1 to 20 times, preferably 1.1 to 15 times, more preferably 1.1 to 10 times, more preferably 1.1 to 5 times, more preferably 1.1 to 3 times, more preferably 1.1 to 2 times, more preferably 1.2 to 1.9 times, even more preferably 1.1 to 1.8 times, most preferably 1.2 to 1.7 times.

[0059] In a further preferred embodiment of the container, the minimum layer thickness of the carrier layer in the first wall region in one of the first ply, the second ply and the third ply or in each ply of a combination of at least two of the above-mentioned plies is not more than 50%, preferably not more than 40%, more preferably not more than 30%, most preferably not more than 20%, most preferably not more than 10% of the maximum layer thickness of the carrier layer in the same ply in the first wall region based on the maximum layer thickness. This preferred embodiment is the twenty-first embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0060] In a further preferred embodiment of the container, the minimum layer thickness of the carrier layer in the second wall region in one of the first ply, the second ply and the third ply or in each ply of a combination of at least two of the above-mentioned plies is not more than 50%, preferably not more than 40%, more preferably not more than 30%, most preferably not more than 20%, most preferably not more than 10% of the maximum layer thickness of the carrier layer in the same ply in the second wall region based on the maximum layer thickness. This preferred embodiment is the twenty-second embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0061] In a further preferred embodiment of the container, the first wall region has a first width in the circumferential direction of the container perpendicular to the length of the container; wherein the first width is in the range of 1 to 10 mm, preferably 1 to 9 mm, more preferably 1 to 8 mm, more preferably 1 to 7 mm, more preferably 1 to 6 mm, more preferably 1 to 5 mm, even more preferably 1 to 4 mm, most preferably 1 to 3 mm. This preferred embodiment is the twenty-third embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0062] In a further preferred embodiment of the container, the second wall region has a second width in the circumferential direction of the container perpendicular to the length of the container; wherein the second width is in the range of 1 to 6 mm, preferably 1 to 5 mm, more preferably 1 to 4 mm, most preferably 1 to 3 mm. This preferred embodiment is the twenty-fourth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0063] In a further preferred embodiment of the container, the layer thickness of the carrier layer in the third ply in the first wall region is 1.1 to 20 times, preferably 1.1 to 15 times, more preferably 1.1 to 10 times, more preferably 1.1 to 5 times, preferably 1.1 to 3 times, more preferably 1.1 to 2 times, more preferably 1.2 to 1.9 times, even more preferably 1.1 to 1.8 times, most preferably 1.2 to 1.7 times the layer thickness in the first ply, or in the second ply, or in each of the two. This preferred embodiment is the twenty-fifth embodiment of the invention, which preferably depends on any of the preceding embodiments of the invention.

[0064] In a further preferred embodiment of the container, the layer thickness of the carrier layer in the second ply in the second wall region is 0.05 to 0.9 times, preferably 0.1 to 0.85 times, more preferably 0.2 to 0.85 times, more preferably 0.3 to 0.85 times, more preferably 0.4 to 0.85 times, even more preferably 0.5 to 0.8 times, most preferably 0.6 to 0.75 times the layer thickness in the first ply or in the third ply or in each of the two. This preferred embodiment is the twenty-sixth embodiment of the invention, which preferably depends on any of the preceding embodiments of the invention.

[0065] In a further preferred embodiment of the container, the first ply is not joined to the second ply in the first wall region.This preferred embodiment is a twenty-seventh embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0066] In a further preferred embodiment of the container, the container wall additionally comprises a third wall region; wherein the third wall region comprises, preferably consists of, the first ply and the third ply as superimposed layers of a third layer sequence in the direction from the interior of the container to the outside; wherein the first ply is joined to the third ply in the third wall region. The third layer sequence does not comprise a second ply. This preferred embodiment is the twenty-eighth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0067] Preferably, the first ply is joined on its inner side facing the interior of the container to an element of the non-folded planar composite in one or a combination of at least two, preferably all three, selected from the first wall region, the second wall region and the third wall region.

[0068] In a further preferred embodiment of the container, the third wall region is adjacent to the second wall region.This preferred embodiment is the twenty-ninth embodiment of the invention, which preferably depends on the twenty-eighth embodiment of the invention.

[0069] In a further preferred embodiment of the container, the first wall region, the second wall port region and the third wall region are connected to each other in this order in the circumferential direction of the container extending perpendicular to the length of the container, preferably adjacent to each other. This preferred embodiment is the 30th embodiment of the present invention, which preferably depends on the 28th or 29th embodiment of the present invention.

[0070] In a further preferred embodiment of the container, the third wall area has a third width in the circumferential direction of the container perpendicular to the length of the container; wherein the third width is in the range of 1 to 12 mm, preferably 1 to 11 mm, more preferably 1 to 10 mm, more preferably 1 to 9 mm, more preferably 1 to 8 mm, even more preferably 1 to 7 mm, and most preferably 1 to 6 mm. This preferred embodiment is the thirty-first embodiment of the present invention, which preferably depends on any one of the twenty-eighth to thirtieth embodiments of the present invention.

[0071] In a further preferred embodiment of the container,

[0072] - a first wall region and a second wall region, or

[0073] - a first wall region, a second wall region and a third wall region

[0074] Together they form the longitudinal seam of the container.This preferred embodiment is the thirty-second embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0075] In a further preferred embodiment of the container, the element of the non-folded planar composite comprises

[0076] - a base member, and

[0077] - A spout arranged on said base member.

[0078] This preferred embodiment is the thirty-third embodiment of the present invention, which is preferably dependent upon any of the preceding embodiments of the present invention.

[0079] In a further preferred embodiment of the container, the base member comprises: a bottom plate, and

[0080] - at least 3, preferably 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably exactly 4 side walls;

[0081] Wherein the nozzle is arranged on a first side of the base plate, wherein the side wall is arranged on another side of the base plate opposite to the first side. This preferred embodiment is the thirty-fourth embodiment of the present invention, which is preferably dependent on the thirty-third embodiment of the present invention.

[0082] In a further preferred embodiment of the container, the side walls are inclined toward each other in the longitudinal direction of the element of the non-folded planar composite extending from the base member to the nozzle; wherein each side wall is at an angle in the range of 55 to 70°, preferably 55 to 69°, more preferably 55 to 68°, more preferably 55 to 67°, more preferably 55 to 66°, more preferably 55 to 65°, more preferably 55 to 64°, more preferably 56 to 63°, more preferably 57 to 62°, more preferably 58 to 61°, and even more preferably 58.5 to 60.0° relative to the longitudinal direction. This preferred embodiment is the thirty-fifth embodiment of the present invention, which is preferably dependent on the thirty-fourth embodiment of the present invention.

[0083] Preferably, each side wall is at an angle in the range of 56 to 70°, more preferably 57 to 70°, more preferably 58 to 70°, more preferably 59 to 70°, more preferably 60 to 70°, more preferably 61 to 70°, more preferably 62 to 69°, more preferably 63 to 68°, more preferably 64 to 67°, and even more preferably 65.0 to 66.0° relative to the longitudinal direction. Preferably, the longitudinal direction is perpendicular to the bottom plate. Alternatively or additionally preferably, the longitudinal direction is perpendicular to the circumferential direction of the element of the non-folding planar composite, alternatively or additionally preferably, the longitudinal direction of the element of the non-folding planar composite is along the length of the container. Preferably, the element of the non-folding planar composite consists of a base member and a nozzle. Preferably, the element of the non-folding planar composite forms a first part of the container wall of the container. Preferably, the folding planar composite forms another part of the container wall.

[0084] In a further preferred embodiment of the container, the bottom plate has a bottom surface in the form of a polygon.This preferred embodiment is the thirty-sixth embodiment of the present invention, which is preferably dependent on the thirty-fourth or thirty-fifth embodiment of the present invention.

[0085] Preferably the polygon is a regular polygon. Alternatively or additionally preferably, the polygon has 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably 4 corners. A preferred polygon with 4 corners is a rectangle. A preferred rectangle is a square. Preferably, the side walls of the base member are as many as the corners of the polygon.

[0086] In a further preferred embodiment of the container, each two side walls that are connected to each other in the circumferential direction of the element of the non-folded planar composite are adjacent to each other to form the side of the base member. This preferred embodiment is the thirty-seventh embodiment of the present invention, which is preferably dependent on any one of the thirty-fourth to thirty-sixth embodiments of the present invention.

[0087] In a further preferred embodiment of the container, the first ply is glued and / or sealed on its inner side facing the interior of the container in the first wall region or in the second wall region or in each of the two to the element of the non-folding planar composite. This preferred embodiment is the thirty-eighth embodiment of the invention, which preferably depends on any of the previous embodiments of the invention. Preferably, the first ply as described above is sealed to the element of the non-folding planar composite with the material of the element of the non-folding planar composite as sealant, preferably as one of a plurality of sealants.

[0088] In a further preferred embodiment of the container, the element of the non-folded planar composite, preferably the nozzle, comprises threads.This preferred embodiment is the thirty-ninth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0089] In a further preferred embodiment of the container, the base member and the nozzle are integrally formed with each other. This preferred embodiment is the 40th embodiment of the invention, which preferably depends on any one of the 33rd to 39th embodiments of the invention. Preferably, the elements of the non-folded planar composite are integrally formed.

[0090] In a further preferred embodiment of the container, the container further comprises a cap, preferably a screw cap, which is arranged at the element of the non-folded planar composite so that the cap covers the pouring aperture of the nozzle. This preferred embodiment is the 41st embodiment of the present invention, which preferably depends on any one of the 33rd to 40th embodiments of the present invention.

[0091] Preferably, the cap is screwed onto the nozzle. The preferred cap comprises a second polymer composition. Preferably, the cap consists of a second polymer composition. Preferably, the second polymer composition comprises a polyolefin or a condensation polymer or both. Preferably, the second polymer composition comprises a polyolefin or a condensation polymer or both together in a proportion in the range of 70 to 100 wt. %, preferably 80 to 99 wt. %, more preferably 90 to 98 wt. %, each based on the second polymer composition. Preferred polyolefins are polyethylene or polypropylene or both. Preferred polyethylene is HDPE. Preferred condensation polymers are polyesters or polyamides (PA) or both. Preferred polyesters are polyethylene terephthalate (PET). Preferred second polymer compositions additionally comprise a colorant. The second polymer composition preferably has a melting temperature in the range of 90 to 350°C, preferably 90 to 300°C, more preferably 90 to 280°C, more preferably 90 to 260°C, more preferably 90 to 240°C, more preferably 90 to 220°C, more preferably 100 to 200°C, more preferably 100 to 190°C, more preferably 100 to 180°C, more preferably 100 to 170°C, more preferably 100 to 160°C, more preferably 110 to 150°C, more preferably 120 to 140°C, still more preferably 125 to 140°C, most preferably 128 to 136°C.

[0092] In a further preferred embodiment of the container, the container further comprises an opening aid; wherein the opening aid is arranged at the nozzle, preferably in the nozzle. This preferred embodiment is the 42nd embodiment of the present invention, which preferably depends on any one of the 33rd to 41st embodiments of the present invention. Preferably, the opening aid is designed and arranged as a pouring hole for opening the nozzle.

[0093] Alternatively or additionally preferably, the opening aid is arranged at the cap, preferably in the cap. Preferred opening aids are cutting aids or tearing aids or both. Alternatively or additionally preferably, the opening aid is annular. Preferred annular cutting aids are cutting rings. Preferred annular tearing aids are tearing rings.

[0094] The preferred opening aid comprises a third polymer composition. Preferably, the opening aid consists of a third polymer composition. Preferably, the third polymer composition comprises a polyolefin or a condensation polymer or both. Preferably, the third polymer composition comprises a polyolefin or a condensation polymer or both in a proportion in the range of 50 to 100 wt. %, more preferably 60 to 100 wt. %, more preferably 70 to 100 wt. %, even more preferably 80 to 100 wt. %, most preferably 90 to 100 wt. %, each based on the third polymer composition. Preferred polyolefins are polyethylene or polypropylene or both. Preferred polyethylene is HDPE. Preferred condensation polymers are polyesters or polyamides (PA) or both. Preferred polyesters are polyethylene terephthalate (PET). Preferred third polymer compositions additionally include a colorant. The third polymer composition preferably has a melting temperature in the range of 90 to 350°C, preferably 90 to 300°C, more preferably 90 to 280°C, more preferably 90 to 260°C, more preferably 90 to 240°C, more preferably 90 to 220°C, more preferably 100 to 200°C, more preferably 100 to 190°C, more preferably 110 to 180°C, most preferably 120 to 170°C.

[0095] In a further preferred embodiment of the container, the opening aid is arranged and configured to open the pouring aperture by removing the cap from the spout.This preferred embodiment is the forty-third embodiment of the invention, which preferably depends on the forty-second embodiment of the invention.

[0096] In a further preferred embodiment of the container, the element of the non-folded planar composite comprises, preferably consists of, a first polymer composition.This preferred embodiment is the forty-fourth embodiment of the present invention, which preferably depends on any of the preceding embodiments of the present invention.

[0097] Alternatively or additionally preferably, the base member or the nozzle or both comprise the first polymer composition.Preferably, the base member or the nozzle or both consist of the first polymer composition.

[0098] In a further preferred embodiment of the container, the first polymer composition comprises a polyolefin or a polycondensate or both.This preferred embodiment is the forty-fifth embodiment of the invention, which is preferably dependent on the forty-fourth embodiment of the invention.

[0099] Preferably, the first polymer composition comprises a polyolefin or a polycondensate or both in a proportion in the range of 70 to 100% by weight, preferably 80 to 99% by weight, more preferably 90 to 98% by weight, each based on the first polymer composition. Preferred polycondensates are polyesters or polyamides (PA) or both. Preferred polyesters are polyethylene terephthalate (PET).

[0100] In a further preferred embodiment of the container, the polyolefin is polyethylene or polypropylene or both.This preferred embodiment is the forty-sixth embodiment of the present invention, which is preferably dependent on the forty-fifth embodiment of the present invention.

[0101] In a further preferred embodiment of the container, the polyethylene is HDPE.This preferred embodiment is the forty-seventh embodiment of the present invention, which is preferably dependent on the forty-sixth embodiment of the present invention.

[0102] In a further preferred embodiment of the container, the first polymer composition comprises a colorant.This preferred embodiment is the forty-eighth embodiment of the present invention, which preferably depends on any one of the forty-fourth to forty-seventh embodiments of the present invention.

[0103] Preferably, the first polymer composition comprises the colorant in a proportion in the range from 0.5 to 5% by weight, preferably from 0.5 to 4% by weight, more preferably from 0.5 to 3% by weight, based in each case on the first polymer composition.

[0104] In a further preferred embodiment of the container, the first polymer composition has a melting temperature in the range of 90 to 350° C., preferably 90 to 300° C., more preferably 90 to 280° C., more preferably 90 to 260° C., more preferably 90 to 240° C., more preferably 90 to 220° C., more preferably 100 to 200° C., more preferably 100 to 190° C., more preferably 100 to 180° C., more preferably 100 to 170° C., more preferably 100 to 160° C., more preferably 110 to 150° C., more preferably 120 to 140° C., still more preferably 125 to 140° C., most preferably 128 to 136° C. This preferred embodiment is the 49th embodiment of the present invention, which preferably depends on any one of the 44th to 48th embodiments of the present invention.

[0105] In a further preferred embodiment of the container, the first layer is joined to one of the side walls of the base member on its inner side facing the interior of the container in the first wall region or in the second wall region or in each of the two. This preferred embodiment is the fiftieth embodiment of the present invention, which preferably depends on any one of the thirty-fourth to forty-ninth embodiments of the present invention.

[0106] In a further preferred embodiment of the container, a first portion of the container wall is formed by an element of a non-folded planar composite; wherein another portion of the container wall is formed by a folded planar composite; wherein the first portion and the other portion together form the container wall to close the container. This preferred embodiment is the fifty-first embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0107] In a further preferred embodiment of the container, the further portion of the container wall is cup-shaped. This preferred embodiment is the fifty-second embodiment of the present invention, which is preferably dependent on the fifty-third embodiment of the present invention.

[0108] In a further preferred embodiment of the container, the container comprises a standing base and a head portion opposite to the standing base in a first direction along the length of the container. This preferred embodiment is the fifty-third embodiment of the present invention, which is preferably dependent on any of the preceding embodiments of the present invention.

[0109] In a further preferred embodiment of the container, the end portion comprises, preferably consists of, a first portion of the container wall. This preferred embodiment is the fifty-fourth embodiment of the invention, which is preferably dependent on the fifty-third embodiment of the invention. Preferably, the element of the non-folded planar composite forms the top surface of the end portion of the container. The preferred top surface is the top surface of a right truncated pyramid.

[0110] In a further preferred embodiment of the container, the standing bottom of the container is formed by a folded planar composite.This preferred embodiment is the fifty-fifth embodiment of the present invention, which is preferably dependent on the fifty-third or fifty-fourth embodiment of the present invention.

[0111] In a further preferred embodiment of the container, the element of the non-folded planar composite defines the interior of the container in a first direction extending along the length of the container. This preferred embodiment is the fifty-sixth embodiment of the present invention, which is preferably dependent on any of the previous embodiments of the present invention. Preferably, the element of the non-folded planar composite forms the top of the container for this purpose.

[0112] In a further preferred embodiment of the container, the folded planar composite delimits the container interior in a transverse direction or in another direction opposite to the first direction or in both. This preferred embodiment is the fifty-seventh embodiment of the invention, which is preferably dependent on the fifty-sixth embodiment of the invention.

[0113] In a further preferred embodiment of the container, the end portion comprises at least 3, preferably 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably exactly 4, preferably planar end side surfaces formed by the folded planar complex; wherein the end side surfaces are preferably inclined relative to each other in a first direction so that the container tapers in at least a section in the end portion. This preferred embodiment is the fifty-eighth embodiment of the present invention, which preferably depends on any one of the fifty-third to fifty-ninth embodiments of the present invention.

[0114] In a further preferred embodiment of the container, the perimeter of each end side surface is formed by a plurality of side edges of the end portion, respectively; wherein each of the plurality of side edges comprises a bottom edge that is convexly curved toward the upright base relative to the perimeter of the end side surface formed by the side edges of the plurality of side edges. This preferred embodiment is the fifty-ninth embodiment of the present invention, which is preferably dependent on the fifty-eighth embodiment of the present invention. Preferably, each of these bottom edges is an arc-shaped convex shape, more preferably a circular arc-shaped convex shape.

[0115] In a further preferred embodiment of the container, the end side surfaces together form the side of a substantially right truncated pyramid. This preferred embodiment is the sixtieth embodiment of the present invention, which is preferably dependent on the fifty-eighth or fifty-ninth embodiment of the present invention.

[0116] In a further preferred embodiment of the container, the right truncated pyramid has a bottom surface in the form of a polygon.This preferred embodiment is the sixty-first embodiment of the present invention, which is preferably dependent on the sixtieth embodiment of the present invention.

[0117] Preferably the polygon is a regular polygon. Alternatively or additionally preferably, the polygon has 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably 4 corners. A preferred polygon with 4 corners is a rectangle. A preferred rectangle is a square. Preferably, the end side of the end portion of the container has as many corners as the polygon.

[0118] The sixty-second embodiment of the present invention is a method comprising the following method steps:

[0119] a) Provide

[0120] - a container precursor comprising a folded planar complex, and

[0121] - Elements of non-folded planar complexes;

[0122] wherein the folded planar complex comprises

[0123] - a carrier layer,

[0124] - a first composite region, and

[0125] - a second composite region;

[0126] wherein the first composite region comprises a first ply of the folded planar composite, a second ply of the folded planar composite and a third ply of the folded planar composite as superimposed layers of a first layer sequence in a direction from the inside of the container precursor to the outside of the container precursor;

[0127] wherein the second ply is joined to the third ply in the first composite region;

[0128] wherein the second composite region comprises the first ply, the second ply and the third ply as superposition of a second layer sequence in a direction from the inner side of the container precursor to the outer side of the container precursor;

[0129] wherein the first ply is joined to the second ply in the second composite region, and the second ply is joined to the third ply in the second composite region;

[0130] wherein the carrier layer has a layer thickness in the third ply in the first composite region that is greater than in the first ply, or greater than in the second ply, or greater than in each of them;

[0131] wherein the layer thickness of the carrier layer in the second composite region in the second ply is smaller than in the first ply, or in the third ply, or in each of them;

[0132] b) joining the first ply of the folded planar composite in the first composite region or in the second composite region or in each of them, in each case on the inside of a container precursor, to an element of the non-folded planar composite to obtain a container.

[0133] The folding planar composite of the container precursor preferably comprises the layers of any embodiment of the container according to the present invention in the order shown. The folding planar composite of the container precursor preferably has the features of the folding planar composite of the container according to any embodiment of the container according to the present invention. Preferably, the elements of the non-folding planar composite have the features mentioned about the elements of the non-folding planar composite of the container according to the present invention in one of its embodiments. Preferably, the method is a method for manufacturing a container, preferably a method for manufacturing a container. The preferred container is one selected from a closed container, a food container, a dimensionally stable container and a liquid-tight container, or a combination of at least two thereof. Alternatively or additionally preferably, the method is a method for manufacturing a container according to the present invention according to any embodiment thereof, preferably a method for manufacturing a container according to the present invention according to any embodiment thereof.

[0134] In a preferred embodiment of the method, the elements of the folded planar composite and the unfolded planar composite are pressed against each other in a first pressing step under a first contact pressure and in another pressing step under another contact pressure in method step b); wherein the first contact pressure is less than the other contact pressure, preferably at least 100 mbar less, more preferably at least 200 mbar less, more preferably at least 300 mbar less, more preferably at least 400 mbar less, more preferably at least 500 mbar less, more preferably at least 600 mbar less, more preferably at least 700 mbar less, more preferably at least 800 mbar less, even more preferably at least 900 mbar less, and most preferably at least 1,000 mbar less. This preferred embodiment is the sixty-third embodiment of the present invention, which preferably depends on the sixty-second embodiment of the present invention.

[0135] Preferably, the first pressing step is performed before the other pressing step. Alternatively, the first pressing step is performed after the other pressing step. Alternatively, the first pressing step is performed overlapping in time with the other pressing step, or simultaneously with the other pressing step. Additionally or alternatively preferably, the first pressing step comprises pressing in one or two first pressing directions, and the other pressing step comprises pressing in one or two further pressing directions different from the first pressing directions. In the case of two first pressing directions, these are preferably opposite to each other. In the case of two further pressing directions, these are preferably opposite to each other. Preferably, each first pressing direction is substantially perpendicular to each further pressing direction. Additionally or alternatively preferably, the first contact pressure is in the range of 800 to 3,000 mbar, preferably 1,000 to 2,800 mbar, more preferably 1,200 to 2,600 mbar. Additionally or alternatively preferably, the further contact pressure is in the range of 2,000 to 4,000 mbar, preferably 2,200 to 3,800 mbar, more preferably 2,400 to 3,600 mbar. Additionally or alternatively preferably, in a first pressing step, the elements of the folded planar composite and the non-folded planar composite are pressed against each other on a first pair of opposite sides of the elements of the non-folded planar composite; wherein the elements of the non-folded planar composite are not pressed against either of the first composite region and the second composite region under a first contact pressure in the first pressing step. Additionally or alternatively preferably, in a first pressing step, the folded planar composite is pressed against two mutually opposite side walls of the base member. Additionally or alternatively preferably, in another pressing step, the elements of the folded planar composite and the non-folded planar composite are pressed against each other on another pair of opposite sides of the elements of the non-folded planar composite; wherein the elements of the non-folded planar composite are pressed against the first composite region or the second composite region or both under another contact pressure in another pressing step. The sides of the other pair of opposite sides are different from the sides of the first pair of opposite sides. Preferably, in another pressing step, the blank is pressed against two mutually opposite side walls of the base member.

[0136] In a further preferred embodiment of the method, the joining in method step b) is carried out in the form of gluing or sealing or both.This preferred embodiment is the sixty-fourth embodiment of the invention, which preferably depends on the sixty-second or sixty-third embodiment of the invention.

[0137] Preferred seals are heat seals or ultrasonic seals or both.Preferred heat seals involve heating of the folded planar composite or the non-folded planar composite elements or both by contact with a solid or a gas or both.

[0138] In a further preferred embodiment of the method, in method step b), a portion of the folded planar composite, or a portion of the element of the non-folded planar composite, or both are heated to a temperature in the range of 220 to 420° C., preferably 240 to 400° C., more preferably 260 to 380° C. This preferred embodiment is the sixty-fifth embodiment of the present invention, which preferably depends on any one of the sixty-second to sixty-fourth embodiments of the present invention.

[0139] In a further preferred embodiment of the method, the sealing is performed with a sealant at least partially provided by the elements of the non-folded planar composite. This preferred embodiment is the sixty-sixth embodiment of the invention, which is preferably dependent on the sixty-fourth or sixty-fifth embodiment of the invention. Preferably, in addition to the elements of the non-folded planar composite, the sealant is partially provided by the folded planar composite, preferably by the inner polymer layer.

[0140] In a further preferred embodiment of the method, the elements of the non-folded planar composite are partially melted for joining in method step b). This preferred embodiment is the sixty-seventh embodiment of the invention, which preferably depends on any one of the sixty-second to sixty-sixth embodiments of the invention.

[0141] In a further preferred embodiment of the method, the element of the unfolded planar composite comprises - a base member, and

[0142] - A nozzle arranged on said base member.

[0143] This preferred embodiment is the sixty-eighth embodiment of the present invention, which is preferably dependent on any one of the sixty-second to sixty-seventh embodiments of the present invention.

[0144] In a further preferred embodiment of the method, the base member comprises: a base plate, and

[0145] - at least 3, preferably 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably exactly 4 side walls;

[0146] wherein the nozzle is arranged on a first side of the bottom plate; wherein the side wall is arranged on another side of the bottom plate opposite to the first side. This preferred embodiment is the sixty-ninth embodiment of the present invention, which is preferably dependent on the sixty-eighth embodiment of the present invention.

[0147] In a further preferred embodiment of the method, in method step b), the first layer of the folded planar composite is joined in the first composite region or in the second composite region or in each of the two, in each case on the inside of the container precursor, to one of the side walls, preferably each side wall, of the base member. This preferred embodiment is the seventieth embodiment of the invention, which preferably depends on the sixty-ninth embodiment of the invention.

[0148] In a further preferred embodiment of the method, a preferably closed end portion of the container is obtained in method step b). This preferred embodiment is the seventy-first embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy embodiments of the present invention. The container obtained in method step b) is preferably open at the end opposite to the end portion.

[0149] In a further preferred embodiment of the method, the method additionally comprises the method steps:

[0150] c) further folding and joining the folded surfaces of the folded planar composite to obtain an upright base. This preferred embodiment is the seventy-second embodiment of the present invention, which is preferably dependent on any one of the sixty-second to seventy-first embodiments of the present invention. Preferably, the container is closed in method step c). Preferably, the upright base is arranged at the end of the container opposite to the end region.

[0151] In a further preferred embodiment of the process, in process step c) a container according to any one of claims 1 to 63 is obtained. This preferred embodiment is the seventy-third embodiment of the present invention, which preferably depends on the seventy-second embodiment of the present invention.

[0152] In a further preferred embodiment of the method, the method comprises filling the container with the food after method step b) and preferably before method step c). This preferred embodiment is the seventy-fourth embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy-third embodiments of the present invention.

[0153] In a further preferred embodiment of the method, the inner side of the folded planar complex

[0154] - in the first ply facing the interior of the container,

[0155] - in the second ply facing away from the interior of the container, and

[0156] - In the third ply facing the interior of the container.

[0157] This preferred embodiment is the seventy-fifth embodiment of the present invention, which is preferably dependent on any one of the sixty-second to seventy-fourth embodiments of the present invention.

[0158] In a further preferred embodiment of the method, the folded planar complex in method step a) comprises at least 2 folds, preferably at least 3 folds, more preferably at least 4 folds. This preferred embodiment is the seventy-sixth embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy-fifth embodiments of the present invention.

[0159] In a further preferred embodiment of the method, the folded planar composite in method step a) comprises a first longitudinal boundary and another longitudinal boundary opposite to the first longitudinal boundary in a circumferential direction of the container precursor perpendicular to the length of the container precursor; wherein the first longitudinal boundary is joined to the other longitudinal boundary to form a longitudinal seam of the container precursor. This preferred embodiment is the seventy-seventh embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy-sixth embodiments of the present invention.

[0160] Preferably, the first longitudinal boundary is joined to the further longitudinal boundary in the first and second composite regions, or in the first, second and third composite regions, to form a longitudinal seam of the container precursor.

[0161] In a further preferred embodiment of the method, the first recombination zone is adjacent to the second recombination zone.This preferred embodiment is the seventy-eighth embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy-seventh embodiments of the present invention.

[0162] In a further preferred embodiment of the method, the layer thickness of the carrier layer in the first ply is smaller in the first composite region than in the second composite region.This preferred embodiment is the seventy-ninth embodiment of the invention, which preferably depends on any one of the sixty-second to seventy-eighth embodiments of the invention.

[0163] Preferably, the layer thickness of the carrier layer in the first ply in the first composite region is 0.05 to 0.9 times, preferably 0.1 to 0.85 times, more preferably 0.2 to 0.85 times, more preferably 0.3 to 0.85 times, more preferably 0.4 to 0.85 times, even more preferably 0.5 to 0.8 times, most preferably 0.6 to 0.75 times. Alternatively or additionally preferably, the layer thickness of the carrier layer in the first ply in the second wall region is 1.1 to 20 times, preferably 1.1 to 15 times, more preferably 1.1 to 10 times, more preferably 1.1 to 5 times, more preferably 1.1 to 3 times, more preferably 1.1 to 2 times, more preferably 1.2 to 1.9 times, even more preferably 1.1 to 1.8 times, most preferably 1.2 to 1.7 times.

[0164] In a further preferred embodiment of the method, the minimum layer thickness of the carrier layer in the first wall region in one of the first ply, the second ply and the third ply or in each ply of a combination of at least two of the above-mentioned plies is not more than 50%, preferably not more than 40%, more preferably not more than 30%, most preferably not more than 20%, and most preferably not more than 10% of the maximum layer thickness of the carrier layer in the same ply in the first wall region based on the maximum layer thickness. This preferred embodiment is the eightieth embodiment of the present invention, which preferably depends on any one of the sixty-second to seventy-ninth embodiments of the present invention.

[0165] In a further preferred embodiment of the method, the minimum layer thickness of the carrier layer in the second wall region in one of the first ply, the second ply and the third ply or in each ply of the combination of at least two of the above-mentioned plies is not more than 50%, preferably not more than 40%, more preferably not more than 30%, most preferably not more than 20%, and most preferably not more than 10% of the maximum layer thickness of the carrier layer in the same ply in the second wall region based on the maximum layer thickness. This preferred embodiment is the eighty-first embodiment of the present invention, which preferably depends on any one of the sixty-second to the eightieth embodiments of the present invention.

[0166] In a further preferred embodiment of the method, the first composite region has a first width in the circumferential direction of the container precursor perpendicular to the length of the container precursor; wherein the first width is in the range of 1 to 10 mm, preferably 1 to 9 mm, more preferably 1 to 8 mm, more preferably 1 to 7 mm, more preferably 1 to 6 mm, more preferably 1 to 5 mm, even more preferably 1 to 4 mm, and most preferably 1 to 3 mm. This preferred embodiment is the eighty-second embodiment of the present invention, which preferably depends on any one of the sixty-second to eighty-first embodiments of the present invention.

[0167] In a further preferred embodiment of the method, the second composite region has a second width in the circumferential direction of the container precursor perpendicular to the length of the container precursor; wherein the second width is in the range of 1 to 6 mm, preferably 1 to 5 mm, more preferably 1 to 4 mm, and most preferably 1 to 3 mm. This preferred embodiment is the eighty-third embodiment of the present invention, which is preferably dependent on any one of the sixty-second to eighty-second embodiments of the present invention.

[0168] In a further preferred embodiment of the method, the thickness of the carrier layer in the third ply in the first composite region is 1.1 to 20 times, preferably 1.1 to 15 times, more preferably 1.1 to 10 times, more preferably 1.1 to 5 times, preferably 1.1 to 3 times, more preferably 1.1 to 2 times, more preferably 1.2 to 1.9 times, even more preferably 1.1 to 1.8 times, most preferably 1.2 to 1.7 times the layer thickness in the first ply, or in the second ply, or in each of the two. This preferred embodiment is the eighty-fourth embodiment of the present invention, which preferably depends on any one of the sixty-second to eighty-third embodiments of the present invention.

[0169] In a further preferred embodiment of the method, the layer thickness of the carrier layer in the second ply in the second composite region is 0.05 to 0.9 times, preferably 0.1 to 0.85 times, more preferably 0.2 to 0.85 times, more preferably 0.3 to 0.85 times, more preferably 0.4 to 0.85 times, even more preferably 0.5 to 0.8 times, most preferably 0.6 to 0.75 times the layer thickness in the first ply, or in the third ply, or in each of the two. This preferred embodiment is the eighty-fifth embodiment of the present invention, which preferably depends on any one of the sixty-second to eighty-fourth embodiments of the present invention.

[0170] In a further preferred embodiment of the method, the first ply is not joined to the second ply in the first composite region.This preferred embodiment is the eighty-sixth embodiment of the present invention, which preferably depends on any one of the sixty-second to eighty-fifth embodiments of the present invention.

[0171] In a further preferred embodiment of the method, the folded planar composite in method step a) further comprises a third composite region; wherein the third composite region comprises a first ply and a third ply as superimposed layers of a third layer sequence in the direction from the inside of the container precursor to the outside of the container precursor; wherein the first ply is joined to the third ply in the third composite region. This preferred embodiment is the eighty-seventh embodiment of the present invention, which preferably depends on any one of the sixty-second to eighty-sixth embodiments of the present invention.

[0172] In a further preferred embodiment of the method, the third recombination zone is adjacent to the second recombination zone.This preferred embodiment is the eighty-eighth embodiment of the present invention, which is preferably dependent on the eighty-seventh embodiment of the present invention.

[0173] In a further preferred embodiment of the method, the first composite region, the second composite port region and the third composite region are connected to each other in this order in the circumferential direction of the container precursor extending perpendicular to the length of the container precursor, preferably adjacent to each other. This preferred embodiment is the eighty-ninth embodiment of the present invention, which is preferably dependent on the eighty-seventh or eighty-eighth embodiment of the present invention.

[0174] In a further preferred embodiment of the method, the third composite region has a third width in the circumferential direction of the container precursor perpendicular to the length of the container precursor; wherein the third width is in the range of 1 to 12 mm, preferably 1 to 11 mm, more preferably 1 to 10 mm, more preferably 1 to 9 mm, more preferably 1 to 8 mm, even more preferably 1 to 7 mm, and most preferably 1 to 6 mm. This preferred embodiment is the ninetieth embodiment of the present invention, which preferably depends on any one of the eighty-seventh to eighty-ninth embodiments of the present invention.

[0175] In a further preferred embodiment of the method,

[0176] - a first composite region and a second composite region, or

[0177] -First composite area, second composite area and third composite area

[0178] Together they form a longitudinal seam of the container precursor. This preferred embodiment is the ninety-first embodiment of the present invention, which is preferably dependent on any one of the sixty-second to ninetieth embodiments of the present invention.

[0179] The ninety-second embodiment of the present invention is the use of a container precursor and an element of a non-folded planar composite for producing a food container; wherein the container precursor comprises a folded planar composite; wherein the folded planar composite comprises

[0180] -Carrier layer

[0181] - a first composite region, and

[0182] - a second composite region;

[0183] wherein the first composite region comprises the first ply of the folded planar composite, the second ply of the folded planar composite and the third ply of the folded planar composite as a superposition of a first layer sequence in the direction from the inside of the container precursor to the outside of the container precursor; wherein the second ply is joined to the third ply in the first composite region; wherein the second composite region comprises the first ply, the second ply and the third ply as a superposition of a second layer sequence in the direction from the inside of the container precursor to the outside of the container precursor; wherein the first ply is joined to the second ply in the second composite region and the second ply is joined to the third ply in the second composite region; wherein the layer thickness of the carrier layer in the first composite region in the third ply is greater than in the first ply, or greater than in the second ply, or greater than in each of them; wherein the layer thickness of the carrier layer in the second composite region in the second ply is less than in the first ply, or less than in the third ply, or less than in each of them. Preferably, the element of the non-folded planar composite has the features of the element of the non-folded planar composite of the container according to the invention as mentioned in one of the embodiments of the container according to the invention.

[0184] In a preferred embodiment of the use, the production comprises joining the first ply of the folded planar composite in the first composite region or in the second composite region or in each of the two, in each case on the inside of the container precursor, to the element of the non-folded planar composite. This preferred embodiment is the ninety-third embodiment of the invention, which preferably depends on the ninety-second embodiment of the invention.

[0185] Features described as preferred in one category of the invention (e.g., according to containers) are similarly preferred in embodiments according to other categories of the invention (e.g., methods and uses). In addition, the features described below are preferred for each category of the invention.

[0186] Planar composites

[0187] All references to planar composites hereinafter relate in particular to the folded planar composite of the container according to the invention. This is not limited to the section "planar composites".

[0188] All laminates, in particular sheet-like laminates, which are conceivable in the context of the present invention and which appear to be suitable in the context of the present invention for producing dimensionally stable food containers are considered to be planar composites. Planar composites for the manufacture of food containers are also referred to as laminates. Such planar composites have a sequence of layers superimposed on each other in a planar manner. The planar composite is usually composed of a thermoplastic polymer layer (referred to herein as an outer polymer layer), a carrier layer (usually made of cardboard or paper, which imparts dimensional stability to the container), an optional thermoplastic polymer layer (referred to herein as an intermediate polymer layer and / or an optional adhesion promoter layer), a barrier layer and an additional thermoplastic polymer layer (referred to herein as an inner polymer layer).

[0189] In general, the term "planar composite" is a general term which includes semi-endless coils and blanks of such coils. The blanks are preferably designed for producing a single container. The folded planar composite of the container according to the invention is such a blank. The folded planar composite is therefore a blank which is cut to size to provide another part of the container wall. The planar composite can be a flat or three-dimensional object. The latter is in particular the case when the planar composite has been folded or rolled up. In any case, the planar composite is sheet-like. Therefore, the planar composite can also be referred to as a sheet-like composite.

[0190] The layers of the planar composite constituting the layer sequence are joined to each other over their entire surface. The two layers are joined together when the adhesion of the two layers to each other exceeds the van der Waals attraction. Preferably, the layers joined to each other are selected from one of joining to each other by coating, laminating together, sealing together, gluing together and pressing together, or a combination of at least two thereof. The layers joined to each other by coating are preferably joined to each other by melt coating or by vapor deposition. Preferred melt coating is melt extrusion coating.

[0191] Unless otherwise indicated, in a layer sequence, layers or plies may be connected to each other indirectly, i.e. with one or at least two intermediate layers or plies, or directly, i.e. without intermediate layers or plies. This is particularly true in formulations in which one layer or ply is superimposed on another layer or ply. A formulation in which a layer sequence comprises enumerated layers or plies means that at least the specified layers or plies are present in a specified order. Such a formulation does not necessarily mean that these layers or plies follow one another. A formulation in which two layers or plies are adjacent to one another means that the two layers or plies follow one another, thus without intermediate layers or plies. However, such a formulation does not specify whether the two layers or plies are connected. On the contrary, the two layers or plies may be in contact with one another. However, preferably, the two layers or plies are connected to one another, preferably in a planar manner.

[0192] Outside

[0193] The outer side of the planar composite or container precursor is the surface of the planar composite or container precursor which, in a container made from the planar composite or container precursor, is intended to come into contact with the environment of the container. This does not exclude the fact that in individual regions of the container, the outer surfaces of different regions of the composite are folded over each other or joined to each other, for example sealed to each other.

[0194] Inside

[0195] The inner side of the planar composite or container precursor is the surface of the planar composite or container precursor which is intended to come into contact with the container contents, preferably foodstuffs, in a container made from the planar composite or container precursor.

[0196] Polymer layer

[0197] In the following, the term "polymer layer" refers in particular to an inner polymer layer, an intermediate polymer layer and an outer polymer layer. The polymer layers are each based on a polymer or a polymer blend, i.e. the polymer layer comprises a polymer or a polymer blend for the most part. Preferred polymers are thermoplastic polymers, more preferably polyolefins. The polymer layers are preferably bonded or applied to the planar composite in an extrusion process, preferably by melt extrusion coating. In addition to the polymer or polymer blend, each polymer layer may also contain additional components. The additional ingredients of the polymer layer are preferably ingredients that do not adversely affect the behavior of the polymer melt when applied as a layer. Additional ingredients can be, for example, inorganic compounds, such as metal salts, or other plastics, such as other thermoplastics.

[0198] Typically, suitable polymers for polymer layers are those that are easily processed due to good extrusion behavior. Among them, polymers obtained by chain polymerization are suitable, especially polyolefins, among which cyclic olefin copolymers (COC), polycyclic olefin copolymers (POC), especially polyethylene and polypropylene are particularly preferred, and polyethylene is particularly preferred. Among polyethylenes, HDPE (high density polyethylene), MDPE (medium density polyethylene), LDPE (low density polyethylene), LLDPE (linear low density polyethylene) and VLDPE (very low density polyethylene) and blends of at least two thereof are preferred. Suitable polymers preferably have a melt flow rate (MFR) in the range of 1 to 25 g / 10 min, preferably in the range of 2 to 20 g / 10 min, and particularly preferably in the range of 2.5 to 15 g / 10 min. Additionally or alternatively preferably, the density of the suitable polymer layer is 0.890 g / cm 3 Up to 0.980g / cm 3 In the range of 0.895 g / cm 3 Up to 0.975g / cm 3 In the range of 0.900 g / cm3 Up to 0.970g / cm 3 The polymer layer preferably has at least one melting temperature in the range of 80 to 155°C, preferably in the range of 90 to 145°C, more preferably in the range of 95 to 135°C.

[0199] Inner polymer layer

[0200] The inner polymer layer is based on at least one thermoplastic polymer, wherein the inner polymer layer may contain particulate inorganic solids. However, it is preferred that the inner polymer layer contains at least 70% by weight, preferably at least 80% by weight, particularly preferably at least 95% by weight, of one or more thermoplastic polymers, in each case based on the total weight of the inner polymer layer. Preferably, the density of the polymer or polymer blend of the inner polymer layer (according to ISO 1183-1:2004) is in the range of 0.900 to 0.980 g / cm 3 In the range of 0.900 to 0.960 g / cm 3 In the range of 0.900 to 0.940 g / cm 3 Preferably, the polymer is a polyolefin. Preferably, the inner polymer layer comprises polyethylene or polypropylene or both. Here, a particularly preferred polyethylene is LDPE.

[0201] Preferably, the inner polymer layer comprises polyethylene or polypropylene or both together in a proportion of at least 30% by weight, more preferably at least 40% by weight, and most preferably at least 50% by weight, each based on the total weight of the inner polymer layer. Additionally or alternatively, the inner polymer layer preferably comprises HDPE, preferably in an amount of at least 5% by weight, more preferably at least 10% by weight, more preferably at least 15% by weight, and most preferably at least 20% by weight, each based on the total weight of the inner polymer layer. As a supplement or alternative to one or more of the above-mentioned polymers, the inner polymer layer preferably comprises a polymer made with the aid of a metallocene catalyst, preferably mPE. Preferably, the inner polymer layer comprises mPE in a proportion of at least 3% by weight, more preferably at least 5% by weight, based on the total weight of the inner polymer layer in each case. Here, the inner polymer layer may comprise 2 or more, preferably 2 or 3, of the above-mentioned polymers in a polymer blend, such as at least a certain proportion of LDPE and mPE, or at least a certain proportion of LDPE and HDPE. Further preferably, the inner polymer layer may comprise 2 or more, preferably 3, sublayers superimposed on each other, which preferably form the inner polymer layer. These sublayers are preferably layers obtained by coextrusion.

[0202] In a preferred embodiment, the inner polymer layer comprises a first sublayer and a further sublayer in the direction from the outside of the folded planar composite to the inside of the folded planar composite, wherein the first sublayer comprises LDPE in an amount of at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, and most preferably at least 90% by weight, each based on the weight of the first sublayer; the further sublayer comprises a blend, wherein the blend comprises LDPE in a proportion of at least 30% by weight, preferably at least 40% by weight, more preferably at least 50% by weight, more preferably at least 60% by weight, and most preferably at least 65% by weight, and mPE in a proportion of at least 10% by weight, preferably at least 15% by weight, more preferably at least 20% by weight, and most preferably at least 25% by weight, in each case based on the weight of the blend. In this case, the further sublayer preferably comprises a blend in a proportion of at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, and most preferably at least 90% by weight, in each case based on the weight of the further sublayer. Particularly preferably, the further sublayer consists of a blend.

[0203] In a further preferred embodiment, the inner polymer layer comprises a first sublayer, a second sublayer and a third sublayer in the direction from the outside of the folded planar composite to the inside of the folded planar composite, the first sublayer comprising an amount of HDPE of at least 30 wt.-%, preferably at least 40 wt.-%, more preferably at least 50 wt.-%, more preferably at least 60 wt.-%, most preferably at least 70 wt.-%, and an amount of LDPE of at least 10 wt.-%, preferably at least 15 wt.-%, more preferably at least 20 wt.-%, in each case based on the weight of the first sublayer; the second sublayer comprises an amount of LDPE of at least 50 wt.-%, preferably at least 60 wt.-%, more preferably at least 70 wt.-%, even more preferably at least 80 wt.-%, most preferably at least 90 wt.-%, in each case based on the weight of the second sublayer; the third sublayer comprises a blend, wherein the blend comprises an amount of LDPE of at least 30 wt.-%, preferably at least 40 wt.-%, more preferably at least 50 wt.-%, even more preferably at least 60 wt.-%, most preferably at least 65 wt.-% and a proportion of mPE of at least 10 wt.-%, preferably at least 15 wt.-%, more preferably at least 20 wt.-%, most preferably at least 25 wt.-%, each based on the weight of the blend. Here, the third sublayer preferably contains the blend in a proportion of at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, even more preferably at least 80% by weight, most preferably at least 90% by weight, in each case based on the weight of the third sublayer. Particularly preferably, the third sublayer consists of the blend.

[0204] Outer polymer layer

[0205] The outer polymer layer preferably comprises polyethylene or polypropylene or both. Preferred polyethylenes are LDPE and HDPE and mixtures thereof. Preferred outer polymer layers comprise at least 50 wt.-%, preferably at least 60 wt.-%, more preferably at least 70 wt.-%, even more preferably at least 80 wt.-%, most preferably at least 90 wt.-% of one or more LDPEs, based in each case on the weight of the outer polymer layer.

[0206] Intermediate polymer layer

[0207] The intermediate polymer layer preferably comprises at least one polyethylene or at least one polypropylene or both. Here, a particularly preferred polyethylene is LDPE. Preferably, the intermediate polymer layer comprises at least one polyethylene or at least one polypropylene or both together in a proportion of at least 20% by weight, more preferably at least 30% by weight, more preferably at least 40% by weight, more preferably at least 50% by weight, more preferably at least 60% by weight, more preferably at least 70% by weight, more preferably at least 80% by weight, most preferably at least 90% by weight, in each case based on the total weight of the intermediate polymer layer. Additionally or alternatively, the intermediate polymer layer preferably comprises HDPE, preferably in a proportion of at least 10% by weight, more preferably at least 20% by weight, more preferably at least 30% by weight, more preferably at least 40% by weight, more preferably at least 50% by weight, more preferably at least 60% by weight, more preferably at least 70% by weight, more preferably at least 80% by weight, most preferably at least 90% by weight, each based on the total weight of the intermediate polymer layer. Here, the intermediate polymer layer preferably comprises the above polymers in a polymer blend.

[0208] Barrier layer

[0209] The barrier layer can be any material that appears suitable for this purpose to the skilled person and that has a sufficient barrier effect, in particular a barrier effect against oxygen. For this purpose, the barrier layer preferably has a thickness of less than 50 cm 3 / (m 2. sky . atm), preferably less than 40 cm 3 / (m 2. sky . atm), more preferably less than 30 cm 3 / (m 2. sky . atm), more preferably less than 20 cm 3 / (m 2. sky . atm), more preferably less than 10 cm 3 / (m 2. sky . atm), and more preferably less than 3 cm 3 (m 2.sky . atm), most preferably no greater than 1 cm 3 (m 2. sky . The barrier layer preferably also exhibits a barrier effect on water vapor. Therefore, the barrier layer is preferably an oxygen barrier layer, and further preferably also a water vapor barrier layer. In addition, the barrier layer preferably has a barrier effect on visible light, that is, it is also a light barrier layer.

[0210] The barrier layer is preferably selected from

[0211] a. Plastic layer;

[0212] b. Metal layer;

[0213] c. oxide layer; or

[0214] A combination of at least two of da to c.

[0215] If the barrier layer according to alternative a. is a plastic layer, this preferably contains at least 70% by weight, particularly preferably at least 80% by weight, most preferably at least 95% by weight of at least one plastic known to the person skilled in the art for this purpose, in particular due to its aroma or gas barrier properties suitable for packaging containers. Plastics, in particular thermoplastics, which come into consideration here are N- or O-containing plastics per se and mixtures of two or more thereof. According to the invention, it may prove advantageous if the melting temperature of the plastic layer is in the range of more than 155 to 300° C., preferably in the range of 160 to 280° C., particularly preferably in the range of 170 to 270° C.

[0216] Further preferably, the basis weight of the plastic layer is between 2 and 120 g / m 2 In the range of 3 to 60 g / m 2 In the range of 4 to 40 g / m 2 , more preferably 6 to 30 g / m 2 In the range of . Further preferably, the plastic layer is obtainable from a melt, for example by extrusion, in particular layer extrusion. In addition, preferably, the plastic layer can also be introduced into the planar composite by lamination. In this case, the film is preferably incorporated into the planar composite. According to another embodiment, a plastic layer can also be selected which can be obtained by deposition from a solution or dispersion of the plastic.

[0217] Suitable polymers are preferably those having a weight average molecular weight of 3.10 3 to 1.10 7 g / mol, preferably in the range of 5.10 3 to 1.10 6 g / mol, particularly preferably in the range of 6.103 to 1.10 5 Suitable polymers are in particular polyamides (PA) or polyethylene vinyl alcohol (EVOH) or mixtures thereof. Among the polyamides, all PAs which appear suitable for use according to the invention to the person skilled in the art come into consideration.

[0218] All EVOHs which appear to the skilled person to be suitable for use according to the invention may be considered as EVOH. Examples of these are available under the trade name EVAL from EVAL Europe NV, Belgium. TM In various versions, such as level EVAL TM F104B or EVAL TM LR171B is available. The preferred EVOH has at least one, two, more or all of the following properties:

[0219] - an ethylene content in the range of 20 to 60 mol %, preferably 25 to 45 mol %;

[0220] -1.0 to 1.4 g / cm 3 , preferably 1.1 to 1.3 g / cm 3 Density within the range of

[0221] - a melting point in the range of greater than 155°C and up to 235°C, preferably from 165 to 225°C;

[0222] - MFR value in the range of 1 to 25 g / 10 min, preferably 2 to 20 g / 10 min (when T S(EVOH )<210℃210℃ / 2.16kg; when 210℃ <T S(EVOH ) <230℃ / 230℃ / 2.16kg);

[0223] - 0.05 to 3.2 cm 3 ·20μm / (m 2 ·day·atm), preferably in the range of 0.1 to 1 cm 3 ·20μm / (m 2 ·day·atm) range.

[0224] Preferably, at least one polymer layer, more preferably the inner polymer layer, or preferably all polymer layers has a melting temperature below the melting temperature of the barrier layer. This is particularly true if the barrier layer is formed from plastic. In this case, the melting temperature of the at least one polymer layer, in particular the inner polymer layer, and the melting temperature of the barrier layer preferably differ by at least 1 K, particularly preferably by at least 10 K, even more preferably by at least 50 K, even more preferably by at least 100 K. The temperature difference should preferably be selected only so high that it does not lead to melting of the barrier layer, in particular not to melting of the plastic layer, during the folding process.

[0225] According to alternative b., the barrier layer is a metal layer. In principle, all metal-containing layers known to the skilled person and capable of producing high light and oxygen impermeability are suitable as metal layers. According to a preferred embodiment, the metal layer can be present as a foil or as a deposited layer, for example after physical vapor deposition. Preferably, the metal layer is an uninterrupted layer. According to a further preferred embodiment, the thickness of the metal layer is in the range of 3 to 20 μm, preferably in the range of 3.5 to 12 μm, particularly preferably in the range of 4 to 10 μm.

[0226] Preferred metals are aluminum, iron or copper. For example, a steel layer in the form of a foil can be preferably used as the iron layer. Further preferably, the metal layer is an aluminum-containing layer, preferably an aluminum layer, and further preferably an aluminum foil. The aluminum layer can suitably consist of an aluminum alloy, such as AlFeMn, AlFe1.5Mn, AlFeSi or AlFeSiMn. Based on the entire aluminum layer, the purity is generally above 97.5%, preferably above 98.5%. In a specific embodiment, the metal layer consists of aluminum foil. Suitable aluminum foils have a ductility of greater than 1%, preferably greater than 1.3%, particularly preferably greater than 1.5%, and / or greater than 30N / mm 2 , preferably greater than 40N / mm 2 , especially preferably greater than 50N / mm 2 A suitable aluminum foil exhibits a drop size of more than 3 mm, preferably more than 4 mm, particularly preferably more than 5 mm in the pipette test. Suitable alloys for producing the aluminum layer or foil are commercially available from Hydro Aluminium Deutschland GmbH or Amcor Flexibles Singen GmbH under the designations EN AW 1200, EN AW 8079 or EN AW 8111. In the case of a metal layer as barrier layer, an adhesion promoter layer can be provided on one or both sides of the metal layer, preferably adjacent to the metal layer on its respective side.

[0227] In addition, according to alternative c., an oxide layer can be selected as a barrier layer. All oxide layers familiar to those skilled in the art and that appear to be suitable for achieving a barrier effect against light, vapor and / or gas can be considered as oxide layers. Preferred oxide layers are semi-metallic oxide layers or metal oxide layers or both. Preferred semi-metallic oxide layers are layers based on one or more silicon oxide compounds (SiOx layers). Preferred metal oxide layers are layers based on the aforementioned metals aluminum, iron or copper, as well as such metal oxide layers based on titanium oxide compounds, wherein aluminum oxide layers (AlOx layers) are particularly preferred. According to a preferred embodiment, the oxide layer can exist as a deposited layer. Exemplarily, a deposited oxide layer is manufactured by vapor deposition of an oxide layer on a barrier substrate. Preferred methods for this are physical vapor deposition (PVD) or chemical vapor deposition (CVD), preferably plasma-assisted. The oxide layer is preferably an uninterrupted layer.

[0228] The barrier substrate can consist of any material that appears suitable to the skilled person for use as a barrier substrate according to the present invention. In this case, the barrier substrate is preferably suitable for being coated with an oxide layer. Preferably, the surface of the layer is sufficiently smooth for this purpose. Further preferably, the thickness of the barrier substrate is in the range of 2 to 30 μm, preferably 2 to 28 μm, more preferably 2 to 26 μm, more preferably 3 to 24 μm, more preferably 4 to 22 μm and most preferably 5 to 20 μm. Furthermore, the barrier substrate preferably exhibits a barrier effect against oxygen or water vapor or both. Preferably, the barrier effect of the barrier substrate against oxygen permeation is greater than the barrier effect of the oxide layer against oxygen permeation. Preferably, the oxygen permeability of the barrier substrate is in the range of 0.1 to 50 cm 3 / (m 2. d . bar), preferably 0.2 to 40 cm 3 / (m 2. d . bar), more preferably 0.3 to 30 cm 3 / (m 2. d .The preferred barrier substrate comprises cellulose or a polymer or both, more preferably consists of cellulose or a polymer or both. The preferred polymer here is an oriented polymer. Preferably, the oriented polymer is uniaxially oriented or biaxially oriented. The preferred polymer is a thermoplastic polymer. Preferably, the barrier substrate consists of a polymer. Preferably, the barrier substrate comprises a polymer selected from a polycondensate, polyethylene, polypropylene, polyvinyl alcohol or a combination of at least two thereof in a proportion of at least 50% by weight, preferably at least 60% by weight, more preferably at least 70% by weight, more preferably at least 80% by weight, most preferably at least 90% by weight, each based on the weight of the barrier substrate. More preferably, the barrier substrate consists of the above polymers. The preferred polypropylene is oriented, in particular uniaxially oriented (oPP) or biaxially oriented (BoPP). The preferred polycondensate is a polyester or a polyamide (PA) or both. The preferred polyester is one selected from polyethylene terephthalate (PET), polylactide (PLA) and a vinyl polymer, or a combination of at least two thereof. The preferred vinyl polymer is a vinyl alcohol copolymer or polyvinyl alcohol or both. Preferred polyvinyl alcohols are vinyl alcohol copolymers. Preferred vinyl alcohol copolymers are ethylene-vinyl alcohol copolymers.

[0229] Carrier layer

[0230] The carrier layer can be any material which appears suitable for this purpose to the skilled person and which has sufficient strength and rigidity to impart sufficient stability to the container so that the container substantially retains its shape when filled. In particular, this is an essential feature of the carrier layer, since the present invention relates to the technical field of dimensionally stable containers. Such dimensionally stable containers differ fundamentally from bags and pouches, which are usually made of film. In addition to many plastics, plant-based fiber materials, in particular cellulose, preferably sizing, bleached and / or unbleached cellulose are preferred, with paper and cardboard being particularly preferred. Therefore, preferred carrier layers comprise a plurality of fibers. The basis weight of the carrier layer is preferably in the range of 120 to 450 g / m 2 In the range of 130 to 400 g / m 2 In the range of 150 to 380 g / m 2 The preferred cardboard generally has a single-layer or multi-layer structure and may be coated with one or more top layers on one or both sides. In addition, the preferred cardboard has a residual moisture content of less than 20% by weight, preferably 2 to 15% by weight, particularly preferably 4 to 10% by weight, based on the total weight of the cardboard. Particularly preferred cardboard has a multi-layer structure. In addition, the cardboard preferably has at least one, but particularly preferably at least two covering layers, which are referred to as "paper coatings" by technicians, on the surface facing the environment. In addition, preferred cardboard has a relative humidity of 100 to 360 J / m2 , preferably 120 to 350 J / m 2 , particularly preferably 135 to 310 J / m 2 The above range enables the provision of a composite material that can be used to fold containers with high compactness, easily and with low tolerance.

[0231] The carrier layer preferably has a bending stiffness in a first direction in the range of 70 to 700 mN, more preferably 80 to 650 mN. In the case where the carrier layer comprises a plurality of fibers, the first direction is preferably the orientation direction of the fibers. The carrier layer comprising a plurality of fibers further preferably has a bending stiffness in another direction perpendicular to the first direction in the range of 10 to 350 mN, more preferably 20 to 300 mN. The preferred planar composite with the carrier layer has a bending stiffness in the first direction in the range of 100 to 700 mN. Further preferably, the above-mentioned planar composite has a bending stiffness in another direction in the range of 50 to 500 mN.

[0232] Preferably, the carrier layer comprises at least 2, more preferably at least 3, particularly preferably exactly 3 or 5 sublayers, each made of a fiber-containing material, wherein the sublayers are superimposed on each other and bonded to each other. The fiber-containing materials of the individual sublayers may be at least partially different from each other, or may be all the same. A further particularly preferred carrier layer comprises the following layers as superimposed and interconnected sublayers of a sequence of sublayers preferably in the direction from the outside of the carrier layer to the inside of the carrier layer: a first sublayer containing a fiber material, a second sublayer containing a fiber material, and a third sublayer containing a fiber material. The fiber-containing materials of the first to third sublayers may be the same or different from each other. In addition, in addition to the above-mentioned layer sequence, the preferred carrier layer also includes at least one covering layer as an additional sublayer. Preferably, the layer sequence of the first to third sublayers superimposes at least one covering layer on the outside of the carrier layer as an additional sublayer. Alternatively or additionally preferably, the layer sequence of the first to third sublayers superimposes at least one covering layer on the inside of the carrier layer as an additional sublayer. Preferably, the average fiber length of the plurality of fibers of the fibrous material of the first sublayer is smaller than the average fiber length of the plurality of fibers of the fibrous material of the third sublayer, preferably 0.1 to 3 mm smaller, more preferably 0.5 to 2.5 mm smaller, most preferably 1 to 2.0 mm smaller.

[0233] Covering

[0234] A preferred covering layer is a "paper coating". In papermaking, a "paper coating" is a covering layer comprising inorganic solid particles, preferably pigments and additives. The "paper coating" is preferably applied to the surface of a layer containing paper or cardboard as a liquid phase, preferably as a suspension or dispersion. A preferred dispersion is an aqueous dispersion. A preferred suspension is an aqueous suspension. Another preferred liquid phase comprises inorganic solid particles, preferably pigments; a binder; and additives. Preferred pigments are selected from calcium carbonate, kaolin, talc, silicates, plastic pigments and titanium dioxide. Preferred kaolin is calcined kaolin. Preferred calcium carbonate is one selected from marble, chalk and precipitated calcium carbonate (PCC), or a combination of at least two thereof. Preferred silicates are layered silicates. Preferred plastic pigments are spherical, preferably hollow spherical. Preferred binders are one selected from styrene-butadiene, acrylates, acrylonitrile, starch and polyvinyl alcohol, or a combination of at least two thereof, preferably acrylates. Preferred starch is one selected from cationically modified starch, anionically modified starch and fragmented starch, or a combination of at least two thereof. Preferred additives are one selected from rheology modifiers, shading dyes, fluorescent whitening agents, carriers, flocculants, deaerators and surface energy modifiers, or a combination of at least two thereof. Preferred deaerators are coating color deaerators, preferably based on silicone or based on fatty acids or both. Preferred surface energy modifiers are surfactants.

[0235] Fiber Materials

[0236] Herein, the terms "fibrous material" and "fibrous material" are synonymous and include any material or layer, such as a preferred carrier layer, comprising a plurality of fibers. Thus, the fibrous material comprises a plurality of fibers, and preferably at least one additional component. A preferred additional component is a sizing agent. A preferred sublayer of the fibrous material comprises a plurality of fibers and at least one sizing agent.

[0237] fiber

[0238] The fibers of the fibrous material may be any fibers which appear suitable for use according to the invention to the skilled person, in particular any fibers known in the manufacture of paper, cardboard or paperboard. A fiber is a linear longitudinally extending structure having a ratio of length to diameter or thickness of at least 3:1. For some fibers, the above ratio is not greater than 100:1. For use herein, long fibers have an average fiber length in the range of 3 to 4 mm, while short fibers have an average fiber length in the range of 0.4 to 2 mm.

[0239] Preferred fibers are plant fibers. Plant fibers are a general term for fibers of plant origin, i.e. fibers obtained from plants. Plant fibers are present in plants as vascular bundles in stems or trunks, in bark (e.g. as bast) and as seed appendages. According to DIN 60001-1:2001-05 Textile fibre materials-Part 1: "Natural fibres and abbreviations", Beuth Verlag, Berlin 2001, page 2, the subdivision is into seed fibers, bast fibers and hard fibers, or according to DIN EN ISO 6938:2015-01 "Textiles-Natural fibres-Generic names and definitions", Beuth Verlag, Berlin 2015, page 4, the subdivision is into seed fibers, bast fibers, leaf fibers and fruit fibers, which therefore constitute a subdivision of hard fibers. In the present invention, preferred plant fibers are produced predominantly from tree wood. In this respect, preferred wood is coniferous wood, i.e. wood of coniferous trees, or deciduous wood, i.e. wood of deciduous trees. In the case of coniferous wood, tracheids are preferred. In the case of deciduous wood, bast (libriforms) are preferred.

[0240] In the present invention, the preferred fibers include cellulose pulp or wood pulp or both, and the fibers are preferably composed thereof. The preferred wood pulp is one selected from groundwood pulp, pressure groundwood pulp and thermomechanical pulp (TMP), or a combination of at least two thereof. The preferred thermomechanical pulp is chemical thermomechanical pulp (CTMP). In this case, the wood pulp is characterized by a greater proportion of lignin compared to cellulose pulp, which can be detected by red coloring with a phloroglucinol solution. In the present invention, the preferred fibers are obtained from wood of trees selected from spruce, pine, birch and eucalyptus or a combination of at least two thereof. The fibers in the plurality of fibers of the preferred fibrous material have at least one of the following properties:

[0241] A) an average fiber length in the range of 0.2 to 6 mm, preferably 0.2 to 4.5 mm, more preferably 0.5 to 4.0 mm, more preferably 1.0 to 4.0, even more preferably 2.0 to 4.0, most preferably 3.0 to 4.0 mm,

[0242] B) a coarseness in the range of 50 to 400 μg / m, preferably 100 to 300 μg / m, more preferably 120 to 300 μg / m, still more preferably 120 to 250 μg / m, most preferably 130 to 200 μg / m,

[0243] C) an average wall thickness in the range of 2 to 10 μm, preferably 3 to 9 μm, more preferably 4 to 9 μm, more preferably 5 to 8 μm, even more preferably 6 to 8 μm, most preferably 6 to 7 μm,

[0244] D) an average outer diameter in the range of 10 to 50 μm, more preferably 10 to 45 μm, more preferably 20 to 45 μm, more preferably 25 to 45 μm, more preferably 30 to 45 μm, still more preferably 30 to 40 μm, most preferably 32 to 40 μm.

[0245] Here, the properties under the above-mentioned point A) are particularly preferred.

[0246] Polyolefins

[0247] Preferred polyolefins are polyethylene (PE) or polypropylene (PP) or both. Preferred polyethylene is one selected from LDPE, LLDPE and HDPE, or a combination of at least two thereof. Another preferred polyolefin is m-polyolefin (polyolefin made with the aid of a metallocene catalyst). Suitable polyethylene has a melt flow rate (MFI-melt flow index=MFR-melt flow rate) in the range of 1 to 25 g / 10 min, preferably in the range of 2 to 20 g / 10 min, particularly preferably in the range of 2.5 to 15 g / 10 min, and / or a melt flow rate of 0.910 g / cm 3 Up to 0.935g / cm 3 In the range of 0.912 g / cm 3 Up to 0.932g / cm 3 In the range of 0.915 g / cm 3 Up to 0.930g / cm 3 density within the range of .

[0248] m-polymer

[0249] mPolymer is a polymer made with the aid of a metallocene catalyst. Metallocene is an organometallic compound in which the central metal atom is located between two organic ligands such as cyclopentadienyl ligands. Preferred mpolymers are mpolyolefins, preferably mpolyethylene or mpolypropylene or both. Preferred mpolyethylene is one selected from mLDPE, mLLDPE and mHDPE, or a combination of at least two thereof. Preferred mpolyolefins are characterized by at least a first melting temperature and a second melting temperature. Preferably, mpolyolefins are characterized by a third melting temperature in addition to the first and second melting temperatures. Preferred first melting temperatures are in the range of 84 to 108°C, preferably 89 to 103°C, more preferably 94 to 98°C. Preferred second melting temperatures are in the range of 100 to 124°C, preferably 105 to 119°C, more preferably 110 to 114°C.

[0250] Adhesion / adhesion promoter layer

[0251] The adhesion promoter layer is a layer of a planar composite comprising a sufficient amount of at least one adhesion promoter so that the adhesion promoter layer improves the adhesion between the layers adjacent to the adhesion promoter layer. For this reason, the adhesion promoter layer preferably comprises an adhesion promoter polymer. Therefore, the adhesion promoter layer is preferably a polymer layer. The adhesion promoter layer can be located between layers of the planar composite that are not directly adjacent to each other, preferably between the barrier layer and the inner polymer layer. Suitable adhesion promoters in the adhesion promoter layer are all plastics that are suitable for forming ionic bonds or covalent bonds with the surfaces of the respective adjacent layers by functionalization with the aid of suitable functional groups to produce a strong bond. Preferably, these are functionalized polyolefins, in particular acrylic copolymers obtained by copolymerization of ethylene with acrylic acids such as acrylic acid, methacrylic acid, crotonic acid, acrylates, acrylate derivatives or carboxylic anhydrides with double bonds (e.g. maleic anhydride) or at least two of them. Among them, polyethylene-maleic anhydride grafted polymers (EMAH), ethylene-acrylic acid copolymers (EAA) or ethylene-methacrylic acid copolymers (EMAA) are preferred, which are, for example, commercially available from DuPont under the trade name and Nucrel or by ExxonMobile Chemicals under the trade name Escor 6000 sell.

[0252] Ethylene-alkyl acrylate copolymers are also preferred as adhesion promoters. The alkyl group preferably selected is methyl, ethyl, propyl, isopropyl, butyl, isobutyl or amyl. Further preferably, the adhesion promoter layer may comprise a blend of two or more different ethylene alkyl acrylate copolymers. Also preferably, the ethylene alkyl acrylate copolymer may have two or more different alkyl groups in the acrylate functionality, such as an ethylene alkyl acrylate copolymer in which both methyl acrylate units and ethyl acrylate units are present in the same copolymer.

[0253] According to the present invention, it is preferred that the adhesion between the carrier layer, the polymer layer or the barrier layer and the respective next layer is at least 0.5 N / 15 mm, preferably at least 0.7 N / 15 mm, particularly preferably at least 0.8 N / 15 mm. In one embodiment according to the present invention, it is preferred that the adhesion between the polymer layer and the carrier layer is at least 0.3 N / 15 mm, preferably at least 0.5 N / 15 mm, particularly preferably at least 0.7 N / 15 mm. In addition, it is preferred that the adhesion between the barrier layer and the polymer layer is at least 0.8 N / 15 mm, preferably at least 1.0 N / 15 mm, particularly preferably at least 1.4 N / 15 mm. In the case where the barrier layer indirectly follows the polymer layer via an adhesion promoter layer, it is preferred that the adhesion between the barrier layer and the adhesion promoter layer is at least 1.8 N / 15 mm, preferably at least 2.2 N / 15 mm, particularly preferably at least 2.8 N / 15 mm. In one embodiment, the adhesion between the individual layers is so strong that the adhesion test leads to tearing of the carrier layer, in particular in the case of cardboard as carrier layer, to so-called tearing of the cardboard fibers.

[0254] Container Precursor

[0255] The container precursor is the initial stage of the container, which is made during the production process of the container. In this case, the container precursor comprises a planar composite. The planar composite can be unfolded or folded. The preferred container precursor is cut to size and designed to produce a single (preferably closed) container. The preferred container precursor cut to size and designed to produce a single container is also referred to as a sleeve. Here, the sleeve comprises a folded planar composite, preferably folded along at least 2 longitudinal folds, more preferably along 4 longitudinal folds. These longitudinal folds are preferably but not necessarily arranged and configured to form the longitudinal edges of the container formed in part by the container precursor. In addition, the sleeve comprises a longitudinal seam, along which the first longitudinal boundary of the planar composite is joined to another longitudinal boundary. Here, the sleeve is open in the top area and the bottom area. The preferred container precursor is integrally formed.

[0256] container

[0257] The container according to the present invention is preferably one selected from a closed container, a food container, a dimensionally stable container and a liquid-tight container, or a combination of at least two thereof. The container wall of the container according to the present invention is therefore preferably dimensionally stable, i.e., it substantially maintains its shape during the filling of the container and the operation for transportation and storage. Preferably, the container according to the present invention comprises an upright base and an end portion opposite to the upright base in the longitudinal direction of the container. Preferably, the central portion is arranged between the upright base and the end portion. Preferably, the central portion is at least partially, preferably completely, in a basic prism shape, preferably in a rectangular parallelepiped shape. Preferably, the end portion is at least partially in the shape of a substantially truncated pyramid. Preferably, the upright base is adjacent to the central portion. Alternatively or preferably in addition, the central portion is adjacent to the end portion. Preferably, the container interior of the container according to the present invention contains food. Preferably, the container wall is liquid-tight.

[0258] The container wall can be composed of different materials. The container wall comprises elements of a folded planar composite and a non-folded planar composite. Preferred elements of the non-folded planar composite are non-planar components, preferably molded components, preferably made of plastic. The container wall may comprise one or more additional non-planar components, such as one or more additional molded components, which are preferably made of plastic. Such additional molded components can be used in particular in the end portion or the upright base. However, in any case, it is preferred that at least 50%, preferably at least 60%, more preferably at least 70%, particularly preferably at least 80%, and even more preferably at least 90% of the surface of the container wall facing away from the interior of the container (outer surface) is composed of a folded planar composite.

[0259] In a preferred embodiment of the invention, the folded planar composite comprises a first transverse boundary and a further transverse boundary opposite to the first transverse boundary in the longitudinal direction of the container; wherein the further transverse boundary is joined to the element of the non-folded planar composite; wherein the edge of the further transverse boundary at least partially surrounds the element of the non-folded planar composite, preferably along the entire perimeter of the element of the non-folded planar composite. Preferably, the edge faces the surroundings of the container. Additionally or alternatively preferably, the edge is not completely covered by any part of the container, preferably not at all covered by any part of the container.

[0260] In a preferred embodiment of the invention, the folded planar composite has a bending stiffness in a first composite direction that is greater than a bending stiffness in another composite direction perpendicular to the first composite direction; wherein the folded planar composite comprises a first transverse boundary and a further transverse boundary opposite the first transverse boundary in the longitudinal direction of the container; wherein the further transverse boundary is joined to the element of the non-folded planar composite; wherein the edge of the further transverse boundary extends along at least 50%, preferably at least 60%, more preferably at least 70%, more preferably at least 80%, more preferably at least 90%, even more preferably at least 95%, most preferably 100% of its length around the first composite direction at an angle within an angular range of ±30°, preferably ±25°, more preferably ±20°, more preferably ±15°, more preferably ±10°, more preferably ±5°, even more preferably ±3°, most preferably 0°. Preferably, the further transverse boundary, preferably the edge of the further transverse boundary, preferably surrounds the element of the non-folded planar composite along the entire perimeter of the element of the non-folded planar composite.

[0261] The edge of the further transverse boundary involved in the above-mentioned embodiments is preferably a cut edge of the folded planar composite. The cut edge is to be distinguished from the edge formed by the fold. Preferably, the end portion of the container has an opening surrounded by the edge. Preferably, the edge forms the periphery of this opening. In the container, the opening is preferably closed by an element of the non-folded planar composite. Typically, the first composite direction and the further composite direction are located in the plane of extension of the plane of the folded planar composite.

[0262] In a further preferred embodiment of the present invention, the carrier layer comprises a plurality of fibers; wherein the plurality of fibers have an orientation in the first composite direction. Alternatively or additionally preferably, at least 55% of the length of the fibers of the plurality of fibers extends around the first composite direction within an angular range of ±30°, more preferably ±25°, more preferably ±20°, more preferably ±15°, more preferably ±10°, more preferably ±5°, even more preferably ±3°, and most preferably 0°.

[0263] In a further preferred embodiment of the invention, the bending stiffness of the folded planar composite has a maximum for bending in a first composite direction relative to the bending direction of the folded planar composite.

[0264] In a further preferred embodiment of the present invention, the folded planar composite has a first bending stiffness for bending in a first composite direction and another bending stiffness for bending in another composite direction. Preferably, the ratio of the other bending stiffness to the first bending stiffness is in the range of 1:10 to 1:1.5, preferably 1:9 to 1:1.5, more preferably 1:8 to 1:1.5, more preferably 1:7 to 1:1.5, more preferably 1:6 to 1:1.5, even more preferably 1:5 to 1:1.5, and most preferably 1:5 to 1:2. Alternatively or additionally preferably, the first bending stiffness is at least 10 mN higher than the other bending stiffness, more preferably at least 20 mN higher, more preferably at least 30 mN higher, more preferably at least 40 mN higher, more preferably at least 50 mN higher, more preferably at least 60 mN higher, more preferably at least 70 mN higher, more preferably at least 80 mN higher, more preferably at least 90 mN higher, even more preferably at least 100 mN higher, and most preferably at least 150 mN higher.

[0265] Alternatively or additionally preferably, the first bending stiffness is in the range of 50 to 800 mN, more preferably 50 to 750 mN. Alternatively preferably, the first bending stiffness is in the range of 60 to 800 mN, more preferably 70 to 800 mN, more preferably 80 to 800 mN, more preferably 90 to 800 mN, more preferably 100 to 800 mN, most preferably 100 to 750 mN. Alternatively or additionally preferably, the other bending stiffness is in the range of 50 to 750 mN, more preferably 100 to 700 mN.

[0266] Preferably, the container comprises an upright base comprising a first transverse boundary, and a terminal portion opposite the upright base in the longitudinal direction of the container comprising said further transverse boundary.Preferably, the upright base is formed entirely of a folded planar composite.

[0267] In a further preferred embodiment of the present invention, the container comprises an upright base and an end portion opposite to the upright base in a longitudinal direction extending along the length of the container; wherein the end portion comprises at least 3, preferably 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, and most preferably 4, preferably planar end side surfaces formed by the folded plane complex, wherein the end side surfaces are inclined relative to each other in the longitudinal direction of the container so that each end side surface is at an angle in the range of 55 to 70°, preferably 55 to 69°, more preferably 55 to 68°, more preferably 55 to 67°, more preferably 55 to 66°, more preferably 55 to 65°, more preferably 55 to 64°, more preferably 56 to 63°, more preferably 57 to 62°, more preferably 58 to 61°, and even more preferably 58.5 to 60.0° relative to the longitudinal direction of the container. Alternatively, preferably, the aforementioned angle is in the range of 56 to 70°, more preferably 57 to 70°, more preferably 58 to 70°, more preferably 59 to 70°, more preferably 60 to 70°, more preferably 61 to 70°, more preferably 62 to 69°, more preferably 63 to 68°, more preferably 64 to 67°, and even more preferably 65.0 to 66.0°.

[0268] In a further preferred embodiment of the present invention, the container comprises an upright base and an end portion opposite to the upright base in a longitudinal direction extending along the length of the container; the end portion comprises at least 3, preferably 4, preferably planar end side surfaces formed by the folded plane complex, the end side surfaces being inclined relative to each other in the longitudinal direction so that the container gradually tapers in at least a section of the end portion; wherein the periphery of each end side surface is respectively formed by a plurality of side edges of the end portion; wherein the plurality of side edges each comprise a pair of steep edges opposite to each other in a circumferential direction of the closed container perpendicular to the longitudinal direction; wherein each end side surface The steep sides of each pair of steep sides of the face are located in the plane of their respective end side surfaces and extend at an angle relative to each other in the plane of their respective end side surfaces in the range of 40 to 60°, preferably 41 to 59°, more preferably 42 to 58°, more preferably 43 to 57°, more preferably 44 to 57°, more preferably 45 to 57°, more preferably 46 to 57°, more preferably 47 to 57°, more preferably 48 to 57°, more preferably 49 to 57°, more preferably 50 to 57°, more preferably 51 to 57°, more preferably 52 to 57°, more preferably 53 to 56°, more preferably 53.5 to 55.5°, and even more preferably 54.0 to 55.0°.

[0269] Alternatively, preferably, the steep sides of each pair of steep sides of each end head side surface are located in the plane of the respective end head side surface and extend at an angle relative to each other in the plane of the respective end head side surface in the range of 43 to 56°, more preferably 43 to 55°, more preferably 43 to 54°, more preferably 43 to 53°, more preferably 43 to 52°, more preferably 43 to 51°, more preferably 43 to 50°, more preferably 43 to 49°, more preferably 43 to 48°, more preferably 43 to 47°, more preferably 44.0 to 46.0°, and even more preferably 44.5 to 45.5°.

[0270] In a further preferred embodiment of the present invention, the container has 4 longitudinal edges, each of which extends along the length of the container from the upright base to the end portion, wherein the container has a square cross section at least in sections along its length between the upright base and the end portion, wherein the shortest longitudinal edge of the 4 longitudinal edges has a length l, wherein the ratio of the length l to the length of side a of the square cross section is in the range of 1.3 to 2.95, preferably 1.35 to 2.95, more preferably 1.38 to 2.8, most preferably 1.39 to 2.8. The length l is the height of the container excluding its end portion. Preferably, the 4 longitudinal edges have equal lengths. However, in principle, it is also possible that, for example, 2 longitudinal edges are shorter than the other two longitudinal edges. In this case, the length l represents a shorter longitudinal edge.

[0271] In a further preferred embodiment of the container according to the invention, an element of a non-folded planar composite forms a first part of a container wall; wherein the folded planar composite comprises a plurality of grooves and has been folded along the grooves of said plurality of grooves, and parts of said folded planar composite have been joined to each other to form another part of the container wall.

[0272] In a further preferred embodiment of the container, the folding plane complex comprises a first lateral boundary and another lateral boundary opposite to the first lateral boundary in the longitudinal direction of the container; wherein an upright base of the container has been formed by folding along the grooves of the plurality of grooves in the first lateral boundary and joining parts of the folding plane complex to each other; wherein the plurality of grooves comprise at least one auxiliary groove, preferably at least 2 auxiliary grooves, more preferably at least 3 auxiliary grooves, and most preferably 4 auxiliary grooves; wherein each auxiliary groove is arranged in the first lateral boundary next to the longitudinal groove of the plurality of grooves so that the bending radius of the longitudinal fold along such longitudinal groove is increased at least in the segment of the longitudinal fold.

[0273] In a preferred embodiment of the method according to the present invention, the element of the non-folding planar composite is designed to form a first part of the container wall surrounding the interior of the container; wherein the folding planar composite of the container precursor in method step a) comprises a plurality of grooves, which are arranged and configured so that another part of the container wall can be obtained by further folding the folding planar composite along the grooves of the plurality of grooves and joining parts of the folding planar composite to each other.

[0274] In a further preferred embodiment of the method, the folding plane complex comprises a first lateral boundary and another lateral boundary opposite to the first lateral boundary in the longitudinal direction of the container; wherein an upright base of the container can be obtained by folding along the grooves of the multiple grooves in the first lateral boundary and joining parts of the folding plane complex to each other; wherein the multiple grooves include at least one auxiliary groove, preferably at least 2 auxiliary grooves, more preferably at least 3 auxiliary grooves, and most preferably 4 auxiliary grooves; wherein each auxiliary groove is arranged in the lateral boundary next to the longitudinal groove of the multiple grooves so that the bending radius of the longitudinal fold along such longitudinal groove is increased at least in the segment of the longitudinal fold.

[0275] For the container and method of the present invention, it is preferred that each auxiliary groove is bent away from the respective longitudinal groove. Additionally or alternatively, each auxiliary groove is preferably arranged on a side of the respective longitudinal groove that is away from the center of the folding plane complex based on the container circumferential direction perpendicular to the container longitudinal direction.

[0276] Elements of non-folded planar complexes / non-planar assemblies

[0277] In principle, any element that appears suitable in the context of the present invention to a person skilled in the art may be used as an element of the non-folding planar composite. Preferably, the element of the non-folding planar composite is a non-planar component. The non-planar component is three-dimensional, i.e. not planar or sheet-like. Preferably, the non-planar component is a molded component. Preferably, the molded component is an injection molded component. Alternatively or additionally preferably, the element of the non-folding planar composite is made of plastic. Alternatively or additionally preferably, the element of the non-folding planar composite is integrally molded. Preferably, the element of the non-folding planar composite forms the top surface of the end portion of the container according to the present invention. The preferred top surface is the top surface of a right truncated pyramid. Preferably, the element of the non-folding planar composite forms a first part of the container wall of the container, and the folding planar composite forms another part of the container wall of the container.

[0278] Preferably, the element of the non-folding planar composite comprises a base member and a nozzle arranged on the base member. The nozzle is a component whose shape is intended to facilitate the directional pouring of liquid. The preferred nozzle is in the form of a tube. Preferably, the tube includes a thread on its outer side. Preferably, the nozzle has a pouring hole closed by a closing element. The preferred closing element is planar. The preferred planar closing element is a laminate or a foil. The preferred foil is a plastic foil. The base member preferably comprises a base plate, and at least 3, preferably 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, more preferably 3 or 4, most preferably exactly 4 side walls; the nozzle is arranged on a first side of the base plate; the side wall is arranged on the other side of the base plate opposite to the first side. Preferably, the other side of the base plate in the container faces the interior of the container, and the first side of the base plate in the container faces away from the interior of the container. The base plate preferably has a bottom surface in the form of a polygon. The preferred polygon here is a regular polygon. Alternatively or additionally preferably, the polygon has 3 to 12, more preferably 3 to 10, more preferably 3 to 8, more preferably 3 to 6, even more preferably 3 or 4, most preferably exactly 4 corners. A preferred polygon with 4 corners is a rectangle. A preferred rectangle is a square. Preferably, the base member has as many side walls as the polygon has corners. Preferably, every 2 side walls that adjoin each other in the circumferential direction of the element of the non-folding planar composite adjoin each other to form a side edge of the base member. Preferably, the base member and the nozzle are integral with each other. Preferably, the element of the non-folding planar composite is integrally formed.

[0279] Preferably, the elements of the folding planar composite and the non-folding planar composite are glued or sealed together, or both. Preferably, the other lateral boundary of the folding planar composite is glued and / or sealed to the element of the non-folding planar composite. Preferably, the folding planar composite is joined to one of the side walls of the element of the non-folding planar composite, preferably each side wall, preferably directly joined. Preferably, the element of the non-folding planar composite, preferably the nozzle, comprises a thread. Preferably, the pouring hole of the nozzle is closed. Preferably, the opening aid is arranged in the nozzle. In this case, the container preferably also includes an opening aid. The preferred opening aid is a cutting aid or a tearing aid or both. Alternatively or additionally preferably, the opening aid is annular. The preferred annular cutting aid is a cutting ring. The preferred annular tearing aid is a tearing ring. Preferably, a cap, preferably a screw cap, is arranged on the element of the non-folding planar composite so that the pouring hole of the nozzle is covered by the cap. Preferably, the cap is screwed onto the nozzle. In this case, the closed container preferably also includes a cap.

[0280] Grooves

[0281] In the present invention, a groove is a linear material modification intended to facilitate folding of a planar composite along the groove. In particular, the groove is intended to allow the folding to be made as accurately as possible along the groove. Thus, a container can be formed from a planar composite having a corresponding groove pattern consisting of grooves by folding along the grooves. Such a groove pattern is also referred to herein as a plurality of grooves.

[0282] Along the grooves, the planar composite preferably has depressions on one side, preferably on its outer side, preferably in the form of material displacements. On the opposite side, preferably on the inner side, the planar composite preferably has protrusions along the grooves.

[0283] In addition to the above-mentioned folding, the production of the container also includes the joining of the areas of the folded planar composite that have been contacted by folding. The slotting tool is used to introduce the groove into the planar composite, and this process is called slotting. The slotting tool can be any tool suitable for slotting the planar composite or the carrier layer in the present invention. For slotting, the slotting tool preferably includes a linear protuberance, which has the shape of the linear depression. By contacting the planar composite or the carrier layer with the linear protuberance, the linear depression can be introduced into the planar composite or the carrier layer. Therefore, the slotting tool can also be referred to as a pressing tool. As the counterpart of the above-mentioned positive tool (positive tool), the slotting tool can also include a negative tool (negative tool). The negative tool includes a linear recess, which can also be referred to as a groove shape. The linear recess preferably has the shape of the linear protuberance of a male tool in its linear extension direction, and is further configured to at least partially undertake the material of the planar composite or the carrier layer displaced by the male tool during the slotting process.

[0284] join

[0285] Any joining method that appears suitable for use according to the invention and by which a sufficiently strong joint can be obtained can be considered in the context of the present invention by a skilled person. The preferred joining method is a material-to-material joining method. A material-to-material joint is understood herein as a joint between joining partners that is produced by an attractive force between or within the materials. A distinction must be made between it and form-fitting and friction-fitting joints that are formed, in particular, by geometry or friction. The preferred material-to-material joining method can be one selected from sealing, welding, gluing and pressing, or a combination of at least two of them. In the case of sealing and welding, a joint is formed by means of a liquid and its solidification. In the case of gluing, a chemical bond is formed between the surfaces of the two objects to be joined, which forms a joint. In the case of sealing, welding or gluing, it is generally advantageous to press the surfaces to be joined together. The preferred pressing of the two layers is to press the corresponding first surface of the first layer of the two layers onto the second surface of the second layer of the two layers facing the first surface on at least 20%, preferably at least 30%, more preferably at least 40%, more preferably at least 50%, more preferably at least 60%, more preferably at least 70%, even more preferably at least 80%, even more preferably at least 90%, and most preferably at least 95%. Particularly preferred joining is sealing or welding. Preferred sealing or welding comprises contacting, heating and pressing as steps, wherein these steps are preferably carried out in this order. Another order is also possible, in particular the order of heating, contacting and pressing.

[0286] Preferred heating is heating a polymer layer, preferably a thermoplastic layer, more preferably a polyethylene layer or a polypropylene layer or both. Another preferred heating is heating the polyethylene layer to a temperature of 80 to 140°C, more preferably 90 to 130°C, most preferably 100 to 120°C. Another preferred heating is heating the polypropylene layer to a temperature of 120 to 200°C, more preferably 130 to 180°C, most preferably 140 to 170°C. Another preferred heating is heating to the sealing temperature of the polymer layer. Further preferred heating is heating an element of a non-folded planar composite, preferably at least one side wall of a base member, preferably heated to a temperature higher than the melting temperature of the first polymer composition. Preferred heating can be carried out by friction, by radiation, by hot gas, by impact solid contact, by mechanical vibration (preferably by ultrasound), by convection or by a combination of at least two thereof.

[0287] Extrusion / Extruder

[0288] Every extruder known to the skilled person and which appears suitable for the purpose of the present invention is considered in the present invention. An extruder is a device for shaping a material, preferably a polymer material, by extruding through a forming hole. A preferred extruder is a screw extruder. Melt extrusion coating is the application of a material to a substrate by extruding a melt of the material through a forming hole of an extruder to obtain a planar layer of the material superimposed on the substrate. In the case of a polymer composition as a material, the material is preferably melted for extrusion coating. During extrusion, the polymer is usually heated to a temperature of 210 to 350° C., measured at the molten polymer film below the outlet at the extruder die. Extrusion can be carried out by means of commercially available extrusion tools known to those skilled in the art, such as an extruder, an extruder screw, a feed block, etc. Preferably, there is a hole at the end of the extruder through which the polymer melt is extruded. The hole can have any shape capable of extruding a polymer melt. For example, the hole can be angular, oval or circular. Preferably, the hole has the shape of a slot of a funnel. After the molten layer has been applied to the substrate by means of the above-described method, the molten layer is allowed to cool for heat setting, preferably by contact with a surface maintained at a temperature of 5 to 50° C., more preferably 10 to 30° C., for quenching. Subsequently, at least the side surface is separated from the surface. The separation can be carried out in any manner familiar to the skilled person and which appears suitable for separating the side surface quickly, as accurately as possible and cleanly. Preferably, the separation is carried out by means of a knife, a laser beam or a water jet or a combination of two or more thereof, wherein a knife, in particular a pot knife, is particularly preferably used.

[0289] laminated

[0290] According to the invention, the superposition of the carrier layer and the barrier layer can be carried out by lamination. In this case, the prefabricated carrier layer and the barrier layer are joined by means of a suitable laminating agent. A preferred laminating agent comprises an intermediate polymer composition, preferably consists of an intermediate polymer composition, preferably an intermediate polymer layer is obtained from it.

[0291] food

[0292] All food products known to the skilled person for human consumption as well as animal feed may be regarded as foods.Preferred foods are liquids above 5°C, such as dairy products, soups, sauces and preferably non-carbonated beverages.

[0293] side

[0294] Edges are defined herein as linear areas of the container wall of the container according to the invention, which are formed by folding of the planar composite and where two preferably planar areas of the folded planar composite adjoin each other, and edges which delimit the dimensions of the folded planar composite. The first-mentioned edges are the folded edges. These include the side edges of the end portion of the container according to the invention and its longitudinal edges. The second-mentioned edges are the cut edges. These include in particular the edges of the further transverse boundary. The term "cut edges" in this context does not necessarily mean that the planar composite has been cut with a knife. On the contrary, the planar composite can also be punched out of a web, for example.

[0295] direction

[0296] The longitudinal direction of the container extends from the upright base to the end portion. Here, the longitudinal direction extends along a straight line. Preferably, the longitudinal direction of the container extends along the height of the container. The longitudinal direction of the container is also referred to herein as the first direction. The circumferential direction of the container is perpendicular to the longitudinal direction. Since the circumferential direction extends along the perimeter of the container, it does not follow a straight line. The planar composite has a direction corresponding to the longitudinal direction and the circumferential direction of the container. On the planar composite, if it is unfolded into a flat state, the longitudinal direction and the circumferential direction are still perpendicular to each other, but here both directions extend along a straight line that is located in the planar extension plane of the planar composite.

[0297] The first and further directions of compounding are perpendicular to each other. Both directions of compounding lie in the plane of extension of the planar composite. The plane of extension of the planar composite is not necessarily a plane in Cartesian coordinates. In particular, if the planar composite is bent or folded, the plane follows this bending or folding. This is particularly true for the folded planar composite of the container according to the invention.

[0298] The longitudinal direction of the element of the non-folding planar composite extends from the base element to the nozzle along a straight line. Preferably, the longitudinal direction of the element of the non-folding planar composite extends along the height of the element of the non-folding planar composite. Additionally or alternatively preferably, the longitudinal direction of the element of the non-folding planar composite extends along the longitudinal axis of the nozzle. Additionally or alternatively preferably, the longitudinal direction of the element of the non-folding planar composite is perpendicular to the base plate. The circumferential direction of the element of the non-folding planar composite is perpendicular to its longitudinal direction. Since the circumferential direction extends along the circumference of the element of the non-folding planar composite, it does not follow a straight line. Preferably, in the container according to the present invention, the longitudinal directions of the elements of the container and the non-folding planar composite are the same. Additionally or alternatively preferably, in the container according to the present invention, the circumferential directions of the elements of the container and the non-folding planar composite are the same.

[0299] Method steps

[0300] The method steps of the method according to the invention are carried out in the order of their symbols. In principle, method steps with immediately consecutive symbols can be carried out one after another, simultaneously or with temporal overlap.

[0301] Colorants

[0302] Solid and liquid colorants known to those skilled in the art and suitable for use in the present invention are contemplated. According to DIN 55943:2001-10, colorant is a general term for all coloring substances, in particular dyes and pigments. Preferred colorants are pigments. Preferred pigments are organic pigments. Pigments worthy of attention in the present invention are in particular those described in DIN 55943:2001-10 and "Industrial Organic Pigments, 3rd edition". (Willy Herbst, Klaus Hunger 2004 WILEY-VCH Verlag GmbH & Co. KgaA, Weinheim ISBN: 3-527-30576-9). Pigments are colorants which are preferably insoluble in the application medium. Dyes are colorants which are preferably soluble in the application medium.

[0303] Skiving

[0304] Scraping is a method step known to the skilled person for reducing the layer thickness of a layer, preferably a carrier layer, more preferably a carrier layer of a material selected from the group consisting of cardboard, paperboard and paper or a combination of at least two thereof. Scraping is preferably carried out using a mechanical processing tool, preferably a scraping tool or a cutting tool or both. Further preferred mechanical processing tools are rotating tools. Preferred rotating tools are knives, preferably pot knives or milling tools or both. Further preferred mechanical processing tools are knives, preferably rotating knives, more preferably pot knives or milling tools or both.

[0305] Measurement method

[0306] The following measurement methods are used within the scope of the present invention. Unless otherwise stated, the measurements are carried out at an ambient temperature of 23° C., an ambient air pressure of 100 kPa (0.986 atm) and a relative humidity of 50%.

[0307] Separating individual layers

[0308] If individual layers of a laminate, such as a barrier layer, are to be examined, first separate the layer to be examined from the laminate as described below. Cut three sample pieces of the laminate to size. For this purpose, use the unfolded and ungrooved areas of the laminate, unless otherwise specified. The sample pieces should be 4 cm×4 cm, unless otherwise specified. If other dimensions of the layer to be examined are necessary for the examination to be carried out, cut sufficiently large sample pieces from the laminate. Place the sample pieces in an acetic acid bath heated to 60° C. (30% acetic acid solution: 30% by weight CHCOOH3, remainder to 100% by weight H2O) for 30 minutes. This separates the layers from one another. Here, if necessary, the layers can also be carefully peeled off from one another manually. If the desired layer cannot be peeled off well enough, use new sample pieces instead and treat them in an ethanol bath (99% ethanol) as described above. If there are residues of the carrier layer on the layer to be examined (e.g. the outer polymer layer or the intermediate polymer layer) (especially in the case of a cardboard layer as the carrier layer), remove these carefully with a brush. From each of the three films thus prepared, a sample of sufficient size for testing was cut (4 cm in area unless otherwise stated). 2 ). These samples are then stored at 23° C. for 4 hours and thereby dried. The three samples can then be checked. Unless otherwise stated, the test results are the arithmetic mean of the results of the three samples.

[0309] MFR value

[0310] MFR values ​​are measured according to ISO 1133-1:2012, method A (mass determination method, at 190° C. and 2.16 kg unless otherwise stated).

[0311] density

[0312] Density is measured according to ISO 1183-1:2013.

[0313] Scott Bond Value

[0314] The Scott Bond value was determined according to Tappi 569.

[0315] Melting temperature

[0316] Melting temperature was determined using DSC method ISO 11357-1, -3. The apparatus was calibrated according to the manufacturer's instructions using the following measurements:

[0317] -TemperatureIn-Starting Temperature,

[0318] - Melting hot indium,

[0319] -Temperature zinc - starting temperature.

[0320] The recorded measurement curve can show multiple local maxima (melting peaks), i.e. multiple melting temperatures. If a melting temperature above a certain value is required in this context, this condition is met if one of the measured melting temperatures is above this value. In the context of the melting temperature of a polymer layer, polymer composition or polymer mentioned in this context, unless otherwise stated, in the context of multiple measured melting temperatures (melting peaks), the highest melting temperature is always referred to.

[0321] Viscosity of PA

[0322] The viscosity values ​​of PA are measured in 95% sulfuric acid according to standard DIN EN ISO 307 (2013).

[0323] Molecular weight distribution

[0324] Molecular weight distribution was measured by gel permeation chromatography using light scattering: ISO 16014-3 / -5 (2009-09).

[0325] Residual moisture content of cardboard

[0326] The residual moisture content of cardboard is measured according to ISO 287:2009.

[0327] Oxygen permeability

[0328] The oxygen permeability was determined according to ASTM D3985-05 (2010). The layer thickness of the sample was 90 μm ± 2 μm. The area of ​​the sample was 50 cm 2 The measurements were carried out at an ambient temperature of 23° C., an ambient air pressure of 100 kPa (0.986 atm) and a relative humidity of 50%. The tester was an Ox-Tran 2 / 22 from Mocon, Neuwied, Germany.

[0329] Colorant detection

[0330] According to "Industrial Organic Pigments, 3rd Edition" (Willy Herbst, Klaus Hunger The detection of organic colorants was carried out according to the method described in WILEY-VCH Verlag GmbH & Co. KgaA, Weinheim (ISBN: 3-527-30576-9, 2004).

[0331] Adhesion

[0332] In order to determine the adhesion of two adjacent layers, they are fixed on a 90° peel test device, such as the "German rotating wheel fixture" from Instron, on a rotating roller that rotates at 40 mm / min during the measurement. The sample is pre-cut into 15 mm wide strips. On one side of the sample, the layers are separated from each other and the separated ends are clamped in a pulling device facing vertically upwards. A measuring device is attached to the pulling device to determine the pulling force. When the roller rotates, the force required to separate the layers from each other is measured. This force corresponds to the adhesion of the layers to each other and is given in N / 15 mm. The separation of the individual layers can be carried out, for example, mechanically, or by a specific pretreatment, for example by soaking the sample in 30% acetic acid warmed at 60°C for 3 minutes.

[0333] Bending stiffness

[0334] The bending stiffness of sheet materials, in particular flat composites or cardboard, is determined using the following apparatus:

[0335] - Bending Tester L&W Bending Tester Code 160, Model 977682, from Lorentzen&Wettre, Sweden,

[0336] -Punch press for bending stiffness samples.

[0337] The material to be tested is conditioned for 24 hours in a standard climate (23° C., 50% relative humidity). The measurements are also carried out in a standard climate. A specimen with a width of 38.1 mm and a length of 69.85 mm is punched out from the material to be tested. In the case of a coil, the specimens are taken at 5 positions distributed over the width of the web. In any case, for each bending direction of the material to be tested, 2 specimens with a length in the corresponding bending direction of the material are punched out from the material at each sampling position. The specimens can be taken only from areas of the material to be tested that have neither grooves nor folds.

[0338] In each bending direction to be considered, the bending stiffness (in mN) of the outside and the opposite inside is determined. To this end, the sample is placed in the bending stiffness tester with the side to be measured facing forward and the measurement is started by pressing the green button. For each combination of bending direction and material side (outside or inside), the same number of specimens is measured. A 2-point bending test is carried out by means of a bending stiffness measuring device. In this test, a specimen clamped at one end is deflected through a bending angle of 15° at its other end by means of a measuring edge. Here, the direction in which the material has bending stiffness, i.e. the bending direction, is the direction of the straight line connecting the two points at which the bending force is applied to the specimen in the 2-point bending test. In the case of a bending stiffness tester, this direction is the direction of the shortest straight line from the clamp to the measuring edge. In this direction, the specimen forms a curve during the bending process. Perpendicular to this direction, a straight fold line will be formed if the specimen is bent far enough for this purpose. The free clamping length of the specimen is 50 mm. Each specimen can be used for only one measurement. It is not permitted to measure the outside and inside on the same specimen. The individual measured values ​​are read off from the display.

[0339] If several specimens are measured for each combination of bending direction and material side, the arithmetic mean of these specimens is calculated separately for each combination. The arithmetic mean is then used as the value for each combination of bending direction and material side. The bending stiffness in a specific bending direction is the geometric mean of the values ​​for the combination of this bending direction / outside and this bending direction / inside.

[0340] Transport simulation

[0341] The containers to be tested are placed on the necessary number of pallets so that all containers are on the pallet without stacking containers. Each pallet is subjected to a vibration test individually. For this purpose, the pallets are placed on a vibration test bench of the type KF 458 05-09 from konzept GmbH, Düren, Germany. The vibration test bench is activated at a frequency of 60 Hz for 30 minutes. During the vibration test, the pallet is lifted by 22 mm. This is the amplitude of the vibration. The liquid tightness of the containers is tested 14 days after the transport simulation.

[0342] Liquid tightness

[0343] Use the Crystal oil 60 from Shell Chemicals containing methylene blue as the test agent for the liquid tightness of the test container. In order to measure whether a particular container type is liquid-tight, 250 identical containers of this container type are tested. Each of 250 containers is cut along its circumference to obtain the first opening cup-shaped container part containing the sealed container bottom and the second opening cup-shaped container part containing the sealed container top. First the first container part with the container bottom and the second container part with the container top are emptied separately, then filled with the test agent of the amount that is enough to cover the bottom of the corresponding cup-shaped container part completely. Then the container part is stored for 24 hours. After the storage time, the outside of each container part is checked with the naked eye to check whether the test agent has produced a blue discoloration here due to leakage. If in this test, no more than 1 of the 500 container parts of 250 identical containers shows this discoloration, these containers are considered to be liquid-tight.

[0344] If the liquid tightness of the end portion of different container types is to be compared, for each of these container types, 1,000 identical containers are tested. Here, the second open cup-shaped container portion with the top of the container is prepared and filled with a certain amount of test agent as described above. The second container portion is then stored for 24 hours. After the storage time, the outside of each second container portion is visually inspected to see whether the test agent has produced a blue discoloration here due to leakage. For each type of container to be compared, in 1,000 second container portions, the quantity of the second container portion showing a blue discoloration is counted. The fewer the second container portion showing a blue discoloration, the better the corresponding container type performs in terms of liquid tightness.

[0345] Compression stability

[0346] For this test, 5 containers are produced and filled with water before closing. The test serves to determine the stability of the container to compression along its longitudinal axis and can be used to assess the load capacity of the filled containers in static storage and in dynamic transport. The test is carried out on the individual containers in accordance with DIN EN ISO 12048. The previous storage of the containers was carried out in accordance with DIN EN ISO 2233:2000. A TIRA test 28025 (Tira GmbH; Eisfelder Strasse 23 / 25; 96528 Schalkau, Germany) with a force sensor 1000 N is used as a measuring instrument. The mean value of the maximum breaking load (load value) is determined. This describes the value that leads to failure of the container. The test apparatus is shown in FIG. Fig. 20 middle.

[0347] Grip stiffness

[0348] In this test, 2 inelastic plastic balls clamp a closed container at opposing pressure points and apply a specified force to the container in the lateral direction. How far (distance in mm) the closed container is compressed laterally by this force is measured. This simulates the stiffness of the container during manual gripping.

[0349] The following tools were used for this experiment:

[0350] - Universal tensile testing machine TIRA test 28025 with force sensor 1000 N (Tira GmbH; EisfelderStrasse 23 / 25; 96528 Schalkau, Germany)

[0351] -XY coordinate workbench

[0352] - Non-elastic plastic ball with a diameter of 18 mm

[0353] The tensile testing machine is equipped with a plastic ball. This test is always used to compare containers of the same weight and fill level. The test setup is shown in Fig.21 middle.

[0354] For each type of container to be inspected, 10 containers are tested. The grip stiffness in the middle of the closed container relative to its total height is determined. The corresponding pressure points at which the plastic ball is to be clamped are marked on the outside of the container before the measurement. The two pressure points are located on opposite sides of the container, i.e. laterally in the middle of their respective sides and in the middle of the total height of the container. After marking the pressure points, the container is aligned between the two non-elastic plastic balls on the XY coordinate table on the tensile testing machine. The container must not yet touch the fixed plastic ball. The result of the grip stiffness test is the distance traveled when a force corresponding to the weight of the closed container multiplied by 1.5 is reached.

[0355] Angle between steep edges (α)

[0356] In order to measure the angle α formed between the steep edges of the pair of steep edges of the end side surface on the container, the container was prepared as follows.

[0357] The container is opened with a knife below its (possibly truncated pyramid-shaped) end portion by cutting transversely through three of its four sides and then emptied. In addition, the bottom of the container is unfolded. To this end, the seal of the ears on the bottom is first loosened manually. The seam closing the bottom of the container has not yet been opened. Next, the container is cut along its length with scissors. The cut is made on the side of the container opposite its longitudinal seam. The cut begins at the cut edge below the end portion obtained as described above. The cut is made in the direction of the bottom of the container. This Fig.18a ). Then, slowly loosen the seam of the closed bottom manually from the inside out. Fig.18b ) is shown in the figure. The sample thus obtained is Fig.18c ) is shown in FIG. In addition, Fig.18d ), on the side opposite to the longitudinal seam, the end portion is cut longitudinally with scissors to the element of the non-planar composite or blank. Then, starting from this cut edge, the seam joining the composite to the element is slowly untied manually. This is Fig.18e ). Now cut away the portion of the composite below the end portion. The remaining sample is schematically shown in Fig.18f )middle.

[0358] The sample prepared as described above is now fixed flat on a piece of white paper. For this purpose, the composite can be stapled to the paper. Then, with a pencil, the two grooves of the pair of steep edges are extended in a straight line on the paper so that the extensions intersect. Now, with a geometric set square, measure the angle between one groove and its extension on the one hand and the other groove and its extension on the other hand. Fig.19 Displays the measurement arrangement. The inclination angle of the end surface relative to the container height (β)

[0359] To determine the angle of inclination β of the end side surface of a container (the side surface of a truncated pyramid), one side of the container is fixed flat on a piece of white paper. Then, one steep edge of the end side surface whose inclination angle is to be determined and the adjacent longitudinal edge of the container are transferred to the paper as straight lines using a pencil. Now use a geometric set square to measure the angle between the straight lines on the paper representing the steep edge and the longitudinal edge. Repeat this measurement process for the other steep edge of the same end side surface. The angle of inclination of the end side surface is then the average of the angles measured for the two steep edges.

[0360] The inclination angle (γ) of the side wall of the base member relative to its longitudinal direction

[0361] The inclination angle γ of the side wall of the base member of the element of the non-folded planar composite is measured relative to the longitudinal direction of the element of the non-folded planar composite extending from the base member to the nozzle. A flat object having a planar surface is positioned on the side wall of the base member so that the angle between the planar surface and the longitudinal direction is the same as that between the side wall. In addition, the lower edge of a geometric set ruler is placed on the bottom side of the element of the non-folded planar composite (the side opposite to the nozzle) so that the angle between the planar surface and the longitudinal direction can be read from the geometric set ruler as the angle γ.

[0362] The present invention is described in more detail below by examples and accompanying drawings, wherein examples and accompanying drawings do not imply any limitation of the present invention. In addition, unless otherwise specified, the accompanying drawings are not drawn to scale.

[0363] Laminate structure

[0364] In the examples (according to the invention) and comparative examples (not according to the invention), laminates having the layer structure shown in Table 1 below were used for container production.

[0365]

[0366] Table 1: Structure of Laminates of Examples and Comparative Examples

[0367] Laminate production

[0368] The laminates of the examples and comparative examples were produced using a melt extrusion coating line from Davis Standard. The extrusion temperature here was in the range of about 280 to 330° C. In a first step, for each container to be produced, holes are made in a carrier layer provided as a coil and then an outer polymer layer is applied to the entire surface of the carrier layer by melt extrusion coating. In addition, a barrier layer is applied together with an adhesion promoter layer as a laminating agent and an intermediate polymer layer over the entire surface of the carrier layer previously coated with the outer polymer layer. Subsequently, an inner polymer layer is extrusion coated over the entire surface of the barrier layer. In order to apply the individual layers by melt extrusion coating, the polymer is melted in an extruder. When the polymer is applied in layers, the resulting melt is transferred to a die via a feed block and extruded onto the carrier layer.

[0369] Container production

[0370] A groove pattern is introduced into the outer side of the coil-shaped laminate obtained as described above. Each groove pattern consists of a plurality of grooves with 4 longitudinal grooves of equal length. In addition, the grooved coil-shaped laminate is divided into blanks for individual containers, each blank having one of the above-mentioned holes and one of the groove patterns. One of the longitudinal boundaries of the blank is scraped on its outer side using a rotating pot knife of model VN 50 from Fortuna Spezialmaschinen GmbH, Weil der Stadt, Germany. The outer polymer layer is thereby removed in the scraped area and the thickness of the carrier layer is reduced to half of its original thickness. Approximately as Figures 23a) to 23f) The scraped area is sealed by folding the edges as shown in . Thus, a longitudinal seam is obtained by folding along the longitudinal grooves of the groove pattern of each blank, folding the scraped area and sealing the scraped longitudinal edge to the opposite longitudinal edge of the blank. Figures 4 to 6 As shown in Figures 23 and 23f), the blank with a longitudinal seam is formed into a sleeve-like container precursor.

[0371] In each case, a closed container was produced from a container precursor as described above. Within the scope of the comparative examples and the examples, a container in the shape of a cuboid and a container having a main body in the shape of a cuboid and an end portion in the shape of a truncated pyramid arranged thereon were produced. The latter container shape is substantially shown in FIG. Fig.11The body of both container shapes has a square cross section with a side length a. For both container shapes, containers with a side length a=67.5 mm and a=47.5 mm were produced.

[0372] The following filling machines are used to produce various containers.

[0373]

[0374] Table 2: Filling machines used in comparative examples and examples

[0375] In order to produce a rectangular parallelepiped container without a truncated pyramid-shaped end portion, a sleeve-shaped container precursor is first folded into a rectangular parallelepiped shape, and a bottom area is formed by folding, which is closed by heat sealing with hot air. This makes a cup open at the top. The cup is sterilized with hydrogen peroxide. In addition, water is filled into the cup. The top area of ​​the cup containing the hole is closed by folding and ultrasonic sealing. The end portion is then formed by folding to obtain a closed container in the shape of a rectangular parallelepiped. The folded protrusion (called ear) is sealed to the container body with hot air. The opening aid is glued to the container in the area of ​​the hole.

[0376] In order to produce a rectangular parallelepiped container with a truncated pyramid-shaped end portion, the sleeve-shaped container precursor is also first folded into a rectangular parallelepiped shape. The truncated pyramid-shaped end portion is then folded and joined to the rectangular parallelepiped by heat sealing with hot air. Figure 7a) and 7b) The invention relates to an injection molded component of the shape shown in FIG. In this process, a folded protrusion (called an ear) is sealed to the side surface of the end portion. The resulting container with an open bottom is sterilized with hydrogen peroxide. In addition, water is filled into the open container (inverted). The bottom area of ​​the container is closed by folding and ultrasonic sealing, thereby obtaining a closed container in the shape of a rectangular parallelepiped with an end portion in the shape of a truncated pyramid.

[0377] Evaluate

[0378] In Examples 1 to 4 and Comparative Examples 1 and 2, only the rectangular parallelepiped containers having the end portions in the shape of truncated pyramids were studied. These containers were prepared substantially as described above to have the following characteristics: Fig.15 , 16 and the longitudinal seam geometry shown in 24.

[0379] As given in Table 1, the carrier layer is made of cardboard. The latter is a material with an orientation direction. The cardboard fibers are mainly oriented in the machine direction (MD) of the cardboard production. The carrier layer and therefore the laminate containing it has a higher bending stiffness for bending in the orientation direction of the cardboard fibers than for bending perpendicularly thereto. More precisely, the bending stiffness of the laminate for bending in the orientation direction has a maximum value related to the bending direction. The orientation direction of the carrier layer is hereby understood to mean the main orientation direction of the fibers of the carrier layer, which is essentially perpendicular or essentially parallel to the upper edge of the laminate in the container. The upper edge of the laminate in this case is the edge of the laminate extending around the molded component (see Figures 2 to 6 and 216 in 11). In essence, if the fibers are oriented substantially perpendicular to the upper edge of the laminate, the bending stiffness of the laminate has a minimum value for bending in the direction of the upper edge of the laminate. If the fibers are oriented substantially parallel to the upper edge of the laminate, the bending stiffness of the laminate has a maximum value for bending in the direction of the upper edge of the laminate, i.e., the bending stiffness of the laminate for bending in the direction of the upper edge of the laminate is greater than the bending stiffness of the laminate for bending in any other direction.

[0380] Each of the closed and filled containers of Examples 1 to 4 and Comparative Examples 1 and 2 was stored at 23° C. and 90% relative humidity for 48 hours. Directly thereafter, the containers were subjected to a transport simulation as described above in the “Measurement Methods” section. This simulation mimics the vibrations that a container would experience during transportation on a truck for approximately 500 km. Subsequently, the end portions of the containers were tested for liquid tightness. The results of these tests are summarized in Table 3.

[0381]

[0382] Table 3: Influence of longitudinal seam geometry and orientation of carrier layers in containers on the liquid tightness of the end section after transport simulation

[0383] The results in Table 3 show that in terms of the liquid tightness of the end portion after the transport simulation, Fig.15 and 16 The longitudinal seam geometry is better than Fig.24 Here, we have Fig.16 The best results were shown for containers with a longitudinal seam geometry of 1.50 mm / s. The orientation of the fibers substantially parallel to the upper edge of the laminate, i.e. substantially perpendicular to the height of the container, relative to a fiber direction substantially perpendicular to the upper edge of the laminate, had a further favorable effect on the liquid tightness of the end portion after transport simulation. Production tolerances in the orientation of the carrier layer show that the fiber direction does not need to be exactly parallel to the upper edge of the laminate to achieve a favorable effect on the shelf life. The improvement in the liquid tightness after transport simulation means a lower reduction in the shelf life of the container caused by transporting the container from the filler to the retailer.

[0384] In all the following further examples and comparative examples, Fig.15 In addition, the main fiber direction of the carrier layer is selected to be substantially perpendicular to the height of the container. In the case of containers with end portions in the shape of truncated pyramids, this means that the main fiber direction is substantially parallel to the upper edge of the laminate.

[0385] While the side length a remains constant, the influence of the length l of the longitudinal edge of the container formed along the longitudinal groove on the basic use properties of the container is studied. The length l is measured as the length of the longitudinal groove in the groove pattern of the respective container. It represents the height of the container without considering the end portion of the truncated pyramid shape. Table 4 summarizes the results for containers with an end portion in the shape of a truncated pyramid and an end portion without a truncated pyramid shape under the two side lengths a considered. The data on the container with a side length a = 67.5 mm in Table 4 therefore relate to both containers with an end portion in the shape of a truncated pyramid and containers without an end portion in the shape of a truncated pyramid. Similarly, the data on the container with a side length a = 47.5 mm relate to both containers with an end portion in the shape of a truncated pyramid and containers without an end portion in the shape of a truncated pyramid.

[0386]

[0387]

[0388] Table 4: The influence of the height of the container body on the use properties of the container

[0389] It was found that a ratio l / a of less than 1.3 leads to low capacity. A ratio l / a greater than 2.95 always has an adverse effect on the standing stability of the container, i.e. the container tends to tip over easily. Containers with a ratio l / a in the range of 1.35 to 2.95 always stand stable enough and have sufficient capacity. Within this range, i.e. with sufficient standing stability, a larger side length a enables a larger capacity. On the other hand, a smaller side length a enables particularly good gripping stiffness under sufficient standing stability. These containers are particularly easy to handle. Containers with a larger side length a are particularly suitable for stationary household use, while containers with a smaller side length a are particularly suitable for mobile use.

[0390] In the following, the angle α is considered to have a sufficient stability of the container compression stability and the folding protrusion ( Fig.11 The effect of the seal on the end portion 1106) (commonly referred to as ears by those skilled in the art). Angle α is the angle between the two steep sides of each side of the truncated pyramid-shaped end portion in the plane of the corresponding side. This angle is measured as described above. The containers with truncated pyramid-shaped end portions to be considered here all have a completely straight (i.e., non-curved) base of the end portion.

[0391] The results summarized in Table 5 show that the compression resistance of containers with truncated pyramid-shaped end portions and angles α within a specific range along their length is higher than that of conventional rectangular containers without truncated pyramid-shaped end portions. This makes such containers more suitable for stacking for transportation. This helps to transport the filled containers to retailers more efficiently. In addition, the selection of a suitable angle α improves the sealing of the ears. If the angle α is suitable, errors occur more frequently in the sealing of the ears, which can result in the ears not being fully attached. This can lead to production errors in the filling machine and thus production interruptions.

[0392]

[0393] Table 5: Effect of angle α on compression stability and sealing of the ear

[0394] In a further embodiment, the effect of the curvature of the base of the truncated pyramid-shaped end portion on the shelf life of the container and the sealing of the lugs and the effect on the above-mentioned production process was examined. For this purpose, containers with a truncated pyramid-shaped end portion having a straight base were compared with containers with a base convexly curved relative to the corresponding side surface of the end portion (see Fig.11 The angle β (see FIG. 1105 ) representing the inclination of the side surface of the truncated pyramid-shaped end portion of the container relative to the longitudinal direction (height) of the container is shown. Figure 8 802 in ) is always 55° here so that the influence of this angle on the inspection can be excluded (see also Tables 7 and 8). In each embodiment in Table 6, the angle γ (see Figure 7a 712 in the figure is also set to 55°. No transport simulation was applied before testing the liquid tightness.

[0395] The test results in Table 6 show that the convexly curved bottom edge improves the liquid tightness of the end portion of the container and thus increases the shelf life of the container. In addition, the container with a convexly curved bottom edge exhibits better ear sealing and thus fewer container production interruptions.

[0396]

[0397] Table 6: Effect of the curvature of the base of the end portion of a truncated pyramid shape on the shelf life and sealing of the ear

[0398] Furthermore, the angle β (see FIG. 1 ) at which the side surface of the truncated pyramid-shaped end portion of the container is inclined relative to the longitudinal direction (height) of the container is considered. Figure 8802 in the figure) on the shelf life of the container. For this purpose, containers having end portions in the shape of truncated pyramids with curved bottom edges were manufactured according to Examples 31, 32, 35 and 36, thereby changing their angle β. The angle γ of the molded component (see Figure 7a 712 in ) reflects the angle β of the end side surface. Angle γ represents the inclination of the side wall of the molded component relative to the longitudinal direction of the molded component (the same as the longitudinal direction of the container in the container). Also, no transport simulation was applied before testing the liquid tightness.

[0399] a, l, l / a, α, base β and γ[°] Liquid tightness of the end part Embodiment 37 See Example 31 54 - Embodiment 38 See Example 31 55 + Embodiment 39 See Example 31 59 ++ Embodiment 40 See Example 31 66 +++ Embodiment 41 See Example 31 70 + Embodiment 42 See Example 31 71 - Embodiment 43 See Example 32 54 - Embodiment 44 See Example 32 55 + Embodiment 45 See Example 32 59 ++ Embodiment 46 See Example 32 66 +++ Embodiment 47 See Example 32 70 + Embodiment 48 See Example 32 71 -

[0400] Table 7: Effect of angles β and γ on the shelf life of a container with side length a = 67.5 mm

[0401]

[0402]

[0403] Table 8: Effect of angles β and γ on the shelf life of a container with side length a = 47.5 mm

[0404] It was found that angles β and γ in the range of 55 to 70 ° are beneficial to the shelf life of the container. Analysis of the container shows that angles β and γ outside the above range promote the formation of so-called pockets, i.e. unsealed cavities, at the interface between the laminate and the molded components in the end portion. Such cavities reduce the compactness of the end portion. This can be demonstrated with the above-mentioned "liquid tightness" test. In addition, bacteria can increasingly reside and multiply in such cavities. Reduced compactness and increased bacterial growth both shorten the shelf life of the container.

[0405] In Tables 3 to 8 above:

[0406] "+++" indicates a more favorable result than "++",

[0407] "++" indicates a more favorable result than "+".

[0408] "+" indicates a more favorable result than "0",

[0409] "0" indicates a more favorable outcome than "-", and

[0410] “-” indicates a more favorable result than “--”.

[0411] Unless otherwise indicated in the description or in the corresponding drawings, the drawings show schematically and not to scale:

[0412] Figure 1 Schematic diagram of the planar complex;

[0413] Figure 2 Schematic diagram of another planar complex;

[0414] Figure 3 Figure 2 Another schematic diagram of a planar complex;

[0415] Figure 4 Schematic diagram of the container precursor;

[0416] Figure 5 Figure 4 Another schematic diagram of a container precursor;

[0417] Figure 6 Figure 4 Another schematic diagram of a container precursor;

[0418] Figure 7a ) Schematic perspective view of elements of a non-folded planar complex;

[0419] Figure 7b ) Figure 7a ) is a schematic top view of an element of a non-folded planar complex;

[0420] Figure 8 Figure 7a ) is a schematic cross-sectional view of an element of a non-folded planar complex;

[0421] Figure 9a ) Figure 7a ) is a schematic partial view of another cross-section of an element of a non-folded planar composite;

[0422] Figure 9b ) Figure 9a ) is a partial enlarged view;

[0423] Fig.10a ) With opening aid Figure 7a ) is a schematic diagram of a cap;

[0424] Fig.10b ) from Fig.10a ) is a schematic diagram of an opening auxiliary member;

[0425] Fig.11 A schematic perspective view of a container according to the invention;

[0426] Figures 12a) to 12d) From Fig.11 A schematic side view of a container according to the present invention;

[0427] Fig.13a ) from Fig.11 A schematic top view of a container according to the present invention;

[0428] Fig.13b ) from Fig.11 A schematic bottom view of a container according to the present invention;

[0429] Fig.14 Figure 1 A partial schematic diagram of a cross section of a planar composite;

[0430] Fig.15 A schematic cross section of a longitudinal seam of a container according to the invention;

[0431] Fig.16 A schematic cross section of a longitudinal seam of another container according to the invention;

[0432] Fig.17 Flow chart of a method for manufacturing a container according to the present invention;

[0433] Figures 18a) to 18f) Illustration of the preparation of a closed container for determining the angle α of a pair of steep sides;

[0434] Fig.19 Illustration of the test method for determining the angle α of a pair of steep sides;

[0435] Fig. 20 a Test apparatus for determining compression stability;

[0436] Fig.21 Test apparatus for determining grip stiffness;

[0437] Fig. 22 Microscope image of a cross section of a longitudinal seam of a container according to the invention;

[0438] Figures 23a) to 23f) a schematic representation of a method of making a container precursor; and

[0439] Fig.24 Schematic cross section of a longitudinal seam of a container not according to the invention.

[0440] Figure 1 A schematic top view of a planar composite 100 in the form of a web-shaped laminate 100 is shown. The web-shaped laminate 100 is a semi-endless web, only one section of which may be shown here. The web-shaped laminate 100 comprises a first plurality of grooves 101 and a further plurality of grooves 102 of greater than 50 groups.

[0441] Figure 2 A schematic diagram of another planar composite 100 is shown. Figure 1 The blank 200 of the planar composite 100 is designed to produce Fig.11Container 1100. This production includes folding the blank 200 to obtain the folded planar composite 805. To this end, the blank 200 includes a first plurality of grooves 101. These grooves are arranged and configured so that by folding the blank 200 along the grooves of the first plurality of grooves 101 and joining parts of the blank 200, a portion of a container wall 1101 surrounding the container interior 1501 of the container 1100 can be obtained. This portion is referred to herein as another portion of the container wall 1101. The container 1100 includes an upright base 1103 and an end portion 1102 opposite the upright base 1103 in a longitudinal direction 201 extending along the length of the container 1100. The longitudinal direction 201 is also referred to herein as the first direction. The first plurality of grooves 101 includes grooves 204 in a first lateral boundary 207 to form the upright base 1103, and grooves 203 in another lateral boundary 208 to form the end portion 1102. In addition, the first plurality of grooves 101 comprises exactly four longitudinal grooves 213 for forming four longitudinal edges 1107 of the container 1100. The container 1100 comprises four end side surfaces 209 formed by the blank 200. The end side surfaces 209 are inclined relative to each other in the longitudinal direction 201 so that the container 1100 tapers gradually in the end portion 1102. The four end side surfaces 209 together substantially form the side surface of the end portion 1102, which is substantially in the shape of a right truncated pyramid with a square base. The four bases 1105 of the right truncated pyramid are convexly curved towards the upright base 1103 relative to their respective end side surfaces 209. The first plurality of grooves 101 comprises four corresponding grooves 212 for forming the four bases 1105. The perimeter of each of the four end side surfaces 209 is formed by the corresponding plurality of side edges of the end portion 1102. Each of these multiple side edges comprises a pair of steep edges 1104 opposite to each other in a circumferential direction 202 of the container 1100 perpendicular to the longitudinal direction 201. Each pair of steep edges 1104 is formed along a pair of grooves 210 of the first plurality of grooves 101. The grooves of each pair of grooves 201 extend relative to each other at an angle 211 in the range of 40 to 60° in the plane of extension of the blank 200. Therefore, in the container 1100, the steep edges of each pair of steep edges 1104 also include an angle 211 in the range of 40 to 60°. This angle 211 is also referred to herein as α. The blank 200 has a first longitudinal boundary 205, another longitudinal boundary 206 opposite thereto in the circumferential direction 202, a first transverse boundary 207, and another transverse boundary 208 opposite thereto in the longitudinal direction 201. The first longitudinal boundary 205, the other longitudinal boundary 206, the first transverse boundary 207, and the other transverse boundary 208 each comprise a cut edge of the blank 200. The bending stiffness of the blank 200 when it is bent in the first composite direction 214 is greater than the bending stiffness when it is bent in another composite direction 215 perpendicular to the first composite direction 214 .Therein, the first composite direction 214 and the further composite direction 215 are located in the planar extension plane of the blank 200. The further transverse boundary 208 is arranged and configured to provide a first portion of the end portion 1102 of the container 1100 by folding the further transverse boundary 208 along the grooves of the first plurality of grooves 101 and joining parts of the further transverse boundary 208 to each other. The edge 216 of the further transverse boundary 208 surrounds the element 701 of the non-folded planar composite 805 of the container 1100, which forms another portion of the end portion 1102 in the container 1100. The edge 216 extends parallel to the first composite direction 214 along its entire length (see. Fig.11 ). The first plurality of grooves 101 further comprises four auxiliary grooves 217. Each auxiliary groove 217 is arranged next to one of the longitudinal grooves 213 in the first transverse boundary 207 so that the bending radius of the longitudinal fold along such longitudinal groove 213 is increased at least in the segment of the longitudinal fold. In addition, each auxiliary groove 217 is bent away from the respective longitudinal groove 213. In addition, each auxiliary groove 217 is arranged on the side of the respective longitudinal groove 213 that faces away from the center of the blank 200 based on the circumferential direction 202. The formation of the upright base 1103 includes a particularly severe folding of the blank 200. The above-mentioned auxiliary grooves 217 can reduce the mechanical stress on the blank 200 when forming the upright base 1103. This helps to reduce the risk of leakage at the bottom of the container 1100 and thus helps to have a long shelf life.

[0442] Figure 3 show Figure 2 A schematic perspective view of a blank 200 is shown.

[0443] Figure 4 A schematic top view of a container precursor 400 is shown. This includes Figure 2 Here, the blank 200 has a first longitudinal fold 402 and a further longitudinal fold 403, both along the longitudinal groove 213. The container precursor 400 is folded flat along these longitudinal folds. The first longitudinal edge 205 is hemmed and sealed to the further longitudinal edge 206 of the blank 200 to obtain a longitudinal seam 401 of the container precursor 400. The geometry of the longitudinal seam 401 is Fig.16 Here, in the case of the container precursor 400, the first wall region 1502 is referred to as the first composite region, the second wall region 1503 is referred to as the second composite region, and the third wall region 1601 is referred to as the third composite region.

[0444] Figure 5 show Figure 4 Another schematic top view of a container precursor 400 of FIG. Here, the container precursor 400 which continues to be folded flat can be seen from the side opposite to the longitudinal seam 401 .

[0445] Figure 6 show Figure 4 A schematic perspective view of a container precursor 400 is shown.

[0446] Figure 7a ) shows a schematic perspective view of the element 701 of the non-folding planar composite 805 and the cap 707. The element 701 of the non-folding planar composite 805 is a non-planar component. The non-planar component is an injection molded component. The element 701 of the non-folding planar composite 805 is designed to form Fig.11 The first portion of the container wall 1101 of the container 1100 in the folded state Figure 2 The blank 200 forms another part of the container wall 1101 (which is an open cup-shaped container), so that Fig.11 1100. The first part of the container wall 1101 is surrounded by the end portion 1102 of the container 1100. The element 701 of the non-folding planar composite 805 defines the container interior 1501 in the longitudinal direction 201 of the container 1100 and forms the top surface of the end portion 1102 in the shape of a truncated pyramid. The element 701 of the non-folding planar composite 805 is made of HDPE and includes a base member 702 and a nozzle 703 arranged thereon, and the pouring hole 804 of the nozzle 703 (see Figure 8 ) is covered by a cap 707. The cap 707 is screwed onto the nozzle 703. The cap 707 is also made of HDPE. The base member 702 comprises a bottom plate 704 and exactly 4 side walls 705. The nozzle 703 is arranged on a first side of the bottom plate 704. The side walls 705 are arranged on the other side of the bottom plate 704 opposite to the first side. In each case, 2 side walls 705 abut each other to form a side edge 706 of the base member 702. The element 701 of the non-folding planar composite 805 is integrally formed and can be obtained by injection molding. Furthermore, the side walls 705 are inclined towards each other in the longitudinal direction 708 of the element 701 of the non-folding planar composite 805 extending from the base member 702 to the nozzle 703, so that each side wall 705 is inclined at an angle γ712 in the range of 55 to 70° relative to the longitudinal direction 708. With regard to Fig.11In the container 1100, the longitudinal direction 708 of the element 701 of the non-folding planar composite 805 is the same as the longitudinal direction 201 of the container 1100. The circumferential direction 709 of the non-planar component 701 is perpendicular to the longitudinal direction 708. The first sealant reservoirs 710 are respectively arranged on the outer side of each side wall 705. These first sealant reservoirs 710 are each elongated in the circumferential direction 709 of the element 701 of the non-folding planar composite 805. In addition, the first sealant reservoirs 710 are each formed into 4 sheets. Additional sealant reservoirs 711 are respectively arranged on each side edge 706 of the base member 702. The additional sealant reservoirs 711 are each arranged and formed to stand in a fin shape on the corresponding side edge 706. In Fig.11 , the element 701 of the non-folded planar composite 805 has been heat sealed to the folded planar composite 805 with a sealant provided at least in part by a first sealant reservoir 710 and a further sealant reservoir 711 of the element 701 of the non-folded planar composite 805 .

[0447] Figure 7b )show Figure 7a ) is a schematic top view of element 701 of a non-folded planar composite 805.

[0448] Figure 8 show Figure 7a ) is a schematic cross-sectional view of an element 701 of a non-folded planar composite 805. Here, it can be seen that an opening aid 801 in the form of a cutting ring 801 is arranged in the nozzle 703. The cutting ring 801 is made of PP. Furthermore, the element 701 of the non-folded planar composite 805 here is joined to the grooves of the first plurality of grooves 101 that have been folded to obtain the folded planar composite 805. Figure 2 The element 701 of the non-folded planar composite 805 and the folded planar composite 805 obtained from the blank 200 together form Fig.11 The container wall 1101 of the container 1100. It can be seen that the end side surfaces 209 of the container 1100 are inclined relative to each other in the longitudinal direction 201 so that they form an angle 802 of 55 to 70° with the longitudinal direction 201. This angle 802 is also referred to as β in this article. In addition, Figure 8 The nozzle 703 is shown to comprise a thread 803 in order to be screwed onto a cap 707. A pouring hole 804 of the nozzle 703 is covered by the cap 707. Furthermore, the pouring hole 804 is closed by a closure element 806 in the form of a plastic foil.

[0449] Figure 9a )show Figure 7a ) is a schematic partial view of another cross-section of element 701 of a non-folded planar composite 805.

[0450] Figure 9b )show Figure 9a ) is a partial enlarged view of the circled area.

[0451] Fig.10a ) shows the opening aid 801 Figure 7a ) is a schematic diagram of the cap 707.

[0452] Fig.10b )Show from Fig.10a ) is a schematic diagram of an opening auxiliary component 801.

[0453] Fig.11 A schematic perspective view of a container 1100 according to the present invention is shown. The container 1100 comprises Figure 2 The blank 200 has been folded along the grooves of the first plurality of grooves 101 to obtain a folded planar composite 805. The container 1100 further comprises Figure 7a ) of the non-folding planar composite 805. The container wall 1101 completely surrounds the container interior 1501. Therefore, the container 1100 is a closed and liquid-tight food container. The first part of the container wall 1101 is formed by the element 701 of the non-folding planar composite 805. Another part of the container wall 1101 is formed by the folding planar composite 805. The folding planar composite 805 and the element 701 of the non-folding planar composite 805 are joined to each other by heat sealing with hot air. The container 1100 includes an upright base 1103 and an end portion 1102 opposite to the upright base 1103 in the longitudinal direction 201 extending along the length of the container 1100. The end portion 1102 includes exactly 4 end side surfaces 209 formed by the folding planar composite 805, which are inclined relative to each other in the longitudinal direction 201 so that the container 1100 is gradually tapered in the end portion 1102 along the longitudinal direction 201. The periphery of each end side surface 209 is formed by a plurality of side edges of the end portion 1102. Each of these plurality of side edges comprises a pair of steep edges 1104 that are opposite to each other in the circumferential direction 202 of the container 1100 extending perpendicularly to the longitudinal direction 201. The steep edges of each pair of steep edges 1104 of each end side surface 209 extend at an angle α in the range of 40 to 60° relative to each other in the plane of the respective end side surface 209. This angle corresponds to Figure 2 The angle α211 in the Figures 18a) to 18f) 19. The container 1100 has four longitudinal edges 1107. Each end side surface 209 forms an angle β802 of 55 to 70° with the longitudinal direction 201 (see Figure 8). These four end side surfaces 209 together substantially form the side surface of the end portion 1102, which is substantially in the shape of a right truncated pyramid with a square base. The four bases 1105 of the right truncated pyramid are convexly bent toward the upright base 1103 relative to their respective end side surfaces 209. The folded protrusion 1106 (also called ear 1106) is sealed to the end side surface 209 by hot air sealing. Fig.11 The folding of the groove 203 along the first plurality of grooves 101 is shown. Figure 2 The first part of the end portion 1102 is obtained by forming the other lateral boundary 208 of the blank 200 and joining parts of the other lateral boundary 208 to each other. In the container 1100, the edge 216 of the other lateral boundary 208 surrounds the other part of the end portion 1102. The other part of the end portion 1102 is formed by the element 701 of the non-folded planar composite 805. The edge 216 extends parallel to the first composite direction 214 along its entire length.

[0454] Figures 12a) to 12d) Show from Fig.11 Schematic side view of the container 1100 of the present invention from all 4 sides. Fig.12c ) shows the longitudinal seam 401 of the container 1100. Fig.16 The schematic cross section in shows the geometry of such a longitudinal seam 401 .

[0455] Fig.13a )Show from Fig.11 Schematic top view of a container 1100 according to the present invention.

[0456] Fig.13b ) shows that according to the present invention Fig.11 Schematic bottom view of container 1100.

[0457] Fig.14 show Figure 1 Schematic diagram of a cross section of a web-shaped laminate 100. The web-shaped laminate 100 comprises the following layers as superposition of a layer sequence in the direction from the outer side 1401 of the web-shaped laminate 100 to the inner side 1402 of the web-shaped laminate 100: an outer polymer layer 1403, a carrier layer 1404, an intermediate polymer layer 1405, an adhesion promoter layer 1406, a barrier layer 1407 and an inner polymer layer 1408. Figure 2 The billet 200 and Fig.11The folded flat composites 805 each share the above-mentioned layer structure with the roll-shaped laminate 100. The carrier layer 1404 consists of cardboard. The main fiber direction of the cardboard in the container 1100 extends approximately parallel to the edge 216 of the other transverse boundary 208. In addition, the carrier layer 1404 makes the container wall 1101 and therefore the container 1100 dimensionally stable.

[0458] Fig.15 A schematic cross section of a longitudinal seam 401 of a container 1100 according to the invention is shown. The container 1100 comprises an element 701 of a folded planar composite 805 and a non-folded planar composite 805. The folded planar composite 805 has Fig.14 In the layers of this layer structure, Fig.15 Only the carrier layer 1404 and the inner polymer layer 1408 are shown. Furthermore, the folded planar composite 805 together with the element 701 of the non-folded planar composite 805 forms a container wall 1101 which surrounds the container interior 1501. The container wall 1101 comprises a first wall region 1502 and a second wall region 1503, which together form the longitudinal seam 401. The first wall region 1502 has a first width 1507 of 2 mm in a circumferential direction 202 of the container 1100 perpendicular to the length of the container 1100. The second wall region 1503 has a second width 1508 of 2 mm in the circumferential direction 202. The first wall region 1502 comprises a first ply 1504 of the folded planar composite 805, a second ply 1505 of the folded planar composite 805 and a third ply 1506 of the folded planar composite 805 as superimposed layers of a first layer sequence in a direction outward from the container interior 1501. The first to third plies each have Fig.14. In the first wall region 1502, the second ply 1505 has been joined to the third ply 1506 by ultrasonic sealing using a sealant provided by the inner polymer layer 1408. In the first wall region 1502, the first ply 1504 is not joined to the second ply 1505 because these plies face each other with their outer sides (the outer polymer layer 1403 has been removed by scraping). On the contrary, the first ply and the second ply face each other with the surface of the carrier layer 1404. Therefore, there is no sealant between the first ply and the second ply in the first wall region 1502 that can join these plies to each other. The second wall region 1503 also contains the first ply 1504, the second ply 1505 and the third ply 1506 as a superimposed layer of the second layer sequence in the direction from the container interior 1501 to the outside. Here, the first ply 1504 is not scraped. Therefore, the outer polymer layer 1403 faces the second ply 1505. Thus, the first ply 1504 is already bonded to the second ply 1505 in the second wall region 1503 by means of a sealant provided by the outer polymer layer 1403 in the second ply 1505. Furthermore, in the second wall region 1503, the second ply 1505 is already bonded to the third ply 1506 by means of a sealant provided by the inner polymer layer 1408 in the second and third plies. Due to the scraping, the layer thickness of the carrier layer 1404 in the third ply 1506 in the first wall region 1502 is greater than the layer thickness in each of the first ply 1504 and the second ply 1505. Furthermore, the layer thickness of the carrier layer 1404 in the second wall region 1503 in the second ply 1505 is less than the layer thickness in each of the first ply 1504 and the third ply 1506. The first ply 1504 has been heat-sealed on its inner side facing the container interior 1501 in the first wall region 1502 and in the second wall region 1503 to the element 701 of the non-folded planar composite 805 using hot air.

[0459] Fig.16 show Fig.11 Schematic cross section of the longitudinal seam 401 of the container 1100. Fig.15 The same applies to Fig.16. However, here, in addition to the first wall region 1502 and the second wall region 1503, the longitudinal seam 401 is also formed by a third wall region 1601. This third wall region 1601 comprises a superposition of a third layer sequence of a first ply 1504 and a third ply 1506 in the direction outward from the container interior 1501, but does not comprise the second ply 1505. In the third wall region 1601, the first ply 1504 is already directly joined to the third ply 1506 by means of a sealant provided by an outer polymer layer 1403 in the first ply 1504 and an inner polymer layer 1408 in the third ply 1506. The third wall region 1601 has a third width 1602 of 3 mm in the circumferential direction 202 of the container 1100. The first layer 1504 has been heat-sealed with hot air on its inner side facing the container interior 1501 in the first wall region 1502, the second wall region 1503 and the third wall region 1601 to one of the four side walls 705 of the element 701 of the non-folded planar composite 805. In addition, the inner side 1402 of the folded planar composite 805 has also been heat-sealed to the other three side walls 705 of the element 701 of the non-folded planar composite 805 and their side edges 706.

[0460] Fig.17 A flow chart showing a method 1700 for manufacturing a container 1100 according to the present invention is shown. In method step a) 1701, a Figure 4 The container precursor 400 and from Figure 7a ) of an element 701 of a non-folded planar composite 805. In a subsequent method step b) 1702, the inner side 1402 of the folded planar composite 805 is heat-sealed to the four side walls 705 and the four side edges 706 of the element 701 of the non-folded planar composite 805. To this end, the inner polymer layer 1408, the four first sealant reservoirs 710 and the four further sealant reservoirs 711 of the folded planar composite 805 are softened by heating with hot air to provide a sealant. Method step b) 1702 comprises a first pressing step and a further pressing step. In the first pressing step, the opposite sides of the folded planar composite 805 are pressed onto the side walls 705 of the element 701 of the non-folded planar composite 805 at a first contact pressure of 1.7 bar. In Fig.11106 are already sealed to the ears 1106. In a further pressing step, the one side and the opposite side of the folded planar composite 805 including the longitudinal seam 401 are pressed onto the side walls 705 of the element 701 of the non-folded planar composite 805 at a further contact pressure of 2.8 bar. Due to the heating with hot air and the first pressing step and the further pressing step, in each of the first, second and third composite regions, the inner side of the first ply 1504 of the folded planar composite 805 is joined to one of the four side walls 705 of the element 701 of the non-folded planar composite 805 to obtain a container which is still open at its bottom. In order to obtain Fig.11 The container 1100 needs to be formed and closed by further folding the folded planar composite 805 and sealing the folded surfaces of the folded planar composite 805 to each other. This is achieved in method step c) 1703.

[0461] Figures 18a) to 18f) A diagram showing preparation of a closed container for measuring an angle α211 of a pair of steep sides 1104 is shown.

[0462] Fig.19 A diagram showing a test method for determining the angle α211 of a pair of steep edges 1104.

[0463] Fig. 20 A test device 2000 is shown for determining the compression stability of a container 1100 , which uses a universal tensile testing machine TIRA test 28025 with a force sensor of 1000 N as a measuring device 2001 .

[0464] Fig.21 The test device 2100 for determining the gripping rigidity of a container 1100 is shown, which uses a universal tensile testing machine TIRA test 28025 with a force sensor 1000 N as a measuring device 2001. For this purpose, the tensile testing machine is equipped with two non-elastic plastic balls 2101. The closed container 1100 is positioned by means of an XY coordinate table 2102.

[0465] Fig. 22 show Fig.11 Microscope image of a cross section of the longitudinal seam 401 of the container 1100. Fig.16 In addition to the schematic visible Fig. 22 Also provided for Fig.17 truncated view of a pressing tool 2201 for pressing elements 701 of the folded planar composite 805 and the unfolded planar composite 805 against each other in a further pressing step of method step b) 1702 of method 1700 of the present invention.

[0466] Figures 23a) to 23f)Displayed by Figure 2 200 is a diagram of a method for preparing a container precursor 400. Fig.23a ), providing a blank 200 in the form of Figure 2 Planar complex 100. Figure 23b ), the blank 200 has been scraped on the outer side 1401 in the first longitudinal border 205 with a rotary pan knife of model VN 50 from Fortuna Spezialmaschinen GmbH, Weil der Stadt, Germany. The carrier layer 1404 has thus been reduced to half its thickness. A scraped area 2301 has been obtained. Fig.23c ), a fold 2302 is introduced into the scraped area 2301. Here, a portion of the scraped area 2301 is folded toward the unscraped area adjacent to the scraped area 2301. Fig.23d ), a portion of the scraped area 2301 is joined to an adjacent unscraped area via a sealing joint 2303 by hot air sealing to form a hem seal. Fig.23e ), four longitudinal folds 2304 are introduced. These include a first longitudinal fold 402 and another longitudinal fold 403. Figure 23f ), another sealed joint 2303 is formed by hot air sealing to join the first longitudinal edge 205 of the hem seal to the other longitudinal edge 206, thereby obtaining the longitudinal seam 401. In order to finally obtain Figure 4 The container precursor 400, Figure 23f ) can be folded flat along a first longitudinal fold 402 and another longitudinal fold 403.

[0467] Fig.24 A schematic cross section 2400 is shown of a longitudinal seam 401 of a container not according to the invention.

[0468] List of Reference Numerals

[0469] 100 Flat composite / laminated material in roll form

[0470] 101 First Multiple Grooves

[0471] 102 Additional grooves

[0472] 200 Flat compound / blank

[0473] 201 First direction / longitudinal direction of container

[0474] 202 Circumferential direction of the container

[0475] 203 Groove for forming the end portion

[0476] 204 Grooves for forming upright bases

[0477] 205 First longitudinal boundary

[0478] 206 Another vertical boundary

[0479] 207 First lateral boundary

[0480] 208 Another Horizontal Boundary

[0481] 209 End side surface

[0482] 210 A pair of grooves for forming a pair of steep edges

[0483] 211 The angle α of the groove on the steep side

[0484] 212 Groove for forming bottom edge

[0485] 213 longitudinal groove

[0486] 214 First composite direction

[0487] 215 Another composite direction

[0488] 216 Edge of another horizontal boundary

[0489] 217 Auxiliary groove

[0490] 400 Container Precursor

[0491] 401 Longitudinal seam

[0492] 402 First vertical fold

[0493] 403 Another vertical fold

[0494] 701 Elements of non-folded planar complexes

[0495] 702 Base member

[0496] 703 Nozzle

[0497] 704 Base Plate

[0498] 705 Sidewall

[0499] 706 Side

[0500] 707 Blocked

[0501] 708 Longitudinal direction of an element of a non-folded planar composite

[0502] 709 Circumferential direction of an element of a non-folded planar composite

[0503] 710 First sealant reservoir / layer

[0504] 711 Additional sealant reservoir

[0505] 712 Angle between the side wall and the longitudinal direction γ

[0506] 801 Opening aid / cutting ring

[0507] 802 Angle β between the end side surface and the longitudinal direction

[0508] 803 Thread

[0509] 804 pouring hole

[0510] 805 Folding planar complex

[0511] 806 Closure element

[0512] 1100 Container according to the present invention

[0513] 1101 Container wall

[0514] 1102 End part

[0515] 1103 Upright Base

[0516] 1104 A pair of steep edges

[0517] 1105 bottom edge

[0518] 1106 Folding protrusion / ear

[0519] 1107 longitudinal edge

[0520] 1401 Outside

[0521] 1402 Inside

[0522] 1403 Outer polymer layer

[0523] 1404 Carrier layer

[0524] 1405 Intermediate polymer layer

[0525] 1406 Adhesion promoter layer

[0526] 1407 Barrier layer

[0527] 1408 Inner polymer layer

[0528] 1501 Inside the container

[0529] 1502 First Wall Area

[0530] 1503 Second Wall Area

[0531] 1504 First layer

[0532] 1505 Second layer

[0533] 1506 The third layer

[0534] 1507 First Width

[0535] 1508 Second Width

[0536] 1601 Third Wall Area

[0537] 1602 Third Width

[0538] 1700 Method for manufacturing a container according to the present invention

[0539] 1701 Method step a)

[0540] 1702 Method step b)

[0541] 1703 Method step c)

[0542] 1900 Diagram of the test method for determining the angle of a pair of steep-sided grooves

[0543] 2000 Test device for determining compression stability

[0544] 2001 Universal tensile testing machine TIRA test 28025 with 1000N force sensor

[0545] 2100 Test device for determining grip stiffness

[0546] 2101 Non-elastic plastic balls

[0547] 2102 XY coordinate workbench

[0548] 2201 Pressing Tools

[0549] 2301 Scraping Area

[0550] 2302 Crease

[0551] 2303 Sealing Connector

[0552] 2304 Vertical Folding

[0553] 2400 Cross-section of a longitudinal seam of a container not according to the invention

Claims

1. A container (1100) comprising - a folded planar complex (805), and - an element (701) of a non-folded planar composite (805); wherein the folded planar complex (805) - comprising a carrier layer (1404), and - forming, together with the element (701) of the non-folded planar composite (805), a container wall (1101) at least partially surrounding the container interior (1501); wherein the container wall (1101) comprises a first wall region (1502) and a second wall region (1503); wherein the first wall region (1502) comprises a first layer sheet (1504) of the folded planar composite (805), a second layer sheet (1505) of the folded planar composite (805) and a third layer sheet (1506) of the folded planar composite (805) as superimposed layers of a first layer sequence in a direction from the container interior (1501) outwards; wherein the second ply (1505) is joined to the third ply (1506) in the first wall region (1502); wherein the second wall region (1503) comprises a first ply (1504), a second ply (1505) and a third ply (1506) as superposition of a second layer sequence in a direction outward from the container interior (1501); wherein the first ply (1504) is joined to the second ply (1505) in the second wall region (1503), and the second ply (1505) is joined to the third ply (1506) in the second wall region (1503); wherein the carrier layer (1404) has a layer thickness in the third ply (1506) in the first wall region (1502) that is greater than in the first ply (1504), or greater than in the second ply (1505), or greater than in each of them; wherein the layer thickness of the carrier layer (1404) in the second wall region (1503) in the second ply (1505) is smaller than in the first ply (1504), or in the third ply (1506), or in each of them; The first layer (1504) is joined on its inner side facing the interior (1501) of the container to an element (701) of the non-folded planar composite (805) in a first wall region (1502) or in a second wall region (1503) or in each of the two.

2. The container (1100) according to claim 1, wherein the layer thickness of the carrier layer (1404) in the first layer (1504) is smaller in the first wall region (1502) than in the second wall region (1503).

3. A container (1100) according to claim 1 or 2, wherein the minimum layer thickness of the carrier layer (1404) in the first wall area (1502) in one of the first layer (1504), the second layer (1505) and the third layer (1506) or in each layer of a combination of at least two of the above layers is not greater than 50% of the maximum layer thickness of the carrier layer (1404) in the same layer in the first wall area (1502) based on the maximum layer thickness.

4. A container (1100) according to any of the preceding claims, wherein the minimum layer thickness of the carrier layer (1404) in the second wall area (1503) in one of the first layer (1504), the second layer (1505) and the third layer (1506) or in each layer of a combination of at least two of the above layers is not greater than 50% of the maximum layer thickness of the carrier layer (1404) in the same layer in the second wall area (1503) based on the maximum layer thickness.

5. A container (1100) according to any of the preceding claims, wherein the layer thickness of the carrier layer (1404) in the third layer sheet (1506) in the first wall area (1502) is 1.1 to 20 times the layer thickness in the first layer sheet (1504), or in the second layer sheet (1505), or in each of the two.

6. A container (1100) according to any of the preceding claims, wherein the layer thickness of the carrier layer (1404) in the second layer sheet (1505) in the second wall area (1503) is 0.05 to 0.9 times the layer thickness in the first layer sheet (1504), or in the third layer sheet (1506), or in each of the two.

7. The container (1100) according to any one of the preceding claims, wherein the container wall (1101) further comprises a third wall region (1601); wherein the third wall region (1601) comprises the first ply (1504) and the third ply (1506) as superposition of a third layer sequence in a direction outward from the container interior (1501); Wherein the first ply (1504) is joined to the third ply (1506) in the third wall region (1601).

8. The container (1100) according to any of the preceding claims, wherein the first wall region (1502) is adjacent to the second wall region (1503), or the third wall region (1601) is adjacent to the second wall region (1503), or both.

9. The container (1100) according to any one of the preceding claims, wherein the element (701) of the non-folded planar composite (805) comprises - a base member (702), and - A nozzle (703) arranged on said base member (702).

10. The container (1100) of claim 9, wherein the base member (702) comprises - a bottom plate (704), and - at least 3 side walls (705); wherein the nozzle (703) is arranged on a first side of the base plate (704); The side wall (705) is arranged on the other side of the bottom plate (704) opposite to the first side.

11. A container (1100) according to claim 10, wherein the side walls (705) are inclined toward each other in the longitudinal direction (708) of the element (701) of the non-folded planar composite (805) extending from the base member (702) to the nozzle (703); wherein each side wall (705) is at an angle (712) in the range of 55 to 70° relative to the longitudinal direction (708).

12. A container (1100) according to claim 10 or 11, wherein the first layer (1504) is joined to one of the side walls (705) of the base member (702) on its inner side facing the interior (1501) of the container in the first wall area (1502) or in the second wall area (1503) or in each of the two.

13. A method (1700) comprising the following method steps: a) Provide - a container precursor (400) comprising a folded planar complex (805), and - an element (701) of a non-folded planar composite (805); wherein the folded planar complex (805) comprises - a carrier layer (1404), - a first composite region, and - a second composite region; wherein the first composite region comprises a first ply (1504) of the folded planar composite (805), a second ply (1505) of the folded planar composite (805), and a third ply (1506) of the folded planar composite (805) as superimposed layers of a first layer sequence in a direction from the inside of the container precursor (400) to the outside of the container precursor; wherein the second ply (1505) is joined to the third ply (1506) in the first composite region; wherein the second composite region comprises a first ply (1504), a second ply (1505) and a third ply (1506) as a superposition of a second layer sequence in a direction from the inside of the container precursor (400) to the outside of the container precursor (400); wherein the first ply (1504) is joined to the second ply (1505) in the second composite region, and the second ply (1505) is joined to the third ply (1506) in the second composite region; wherein the carrier layer (1404) has a layer thickness in the third ply (1506) in the first composite region that is greater than the layer thickness in the first ply (1504), or greater than the layer thickness in the second ply (1505), or greater than the layer thickness in each of them; wherein the layer thickness of the carrier layer (1404) in the second composite region in the second ply (1505) is smaller than in the first ply (1504), or in the third ply (1506), or in each of them; b) joining the first layer (1504) of the folded planar composite (805) in the first composite region or in the second composite region or in each of them, in each case on the inner side of the container precursor (400), to the element (701) of the non-folded planar composite (805) to obtain a container.

14. The method (1700) according to claim 13, wherein the elements (701) of the folded planar composite (805) and the unfolded planar composite (805) are pressed against one another in method step b) in a first pressing direction under a first contact pressure and in another pressing direction under another contact pressure; The first contact pressure is smaller than the another contact pressure.

15. Use of a container precursor (400) and an element (701) of a non-folded planar composite (805) for producing a food container; wherein the container precursor comprises a folded planar complex (805); wherein the folded planar complex (805) comprises -Carrier layer (1404) - a first composite region, and - a second composite region; wherein the first composite region comprises a first ply (1504) of the folded planar composite (805), a second ply (1505) of the folded planar composite (805) and a third ply (1506) of the folded planar composite (805) as superimposed layers of a first layer sequence in a direction from the inside of the container precursor to the outside of the container precursor; wherein the second ply (1505) is joined to the third ply (1506) in the first composite region; wherein the second composite region comprises a first ply (1504), a second ply (1505) and a third ply (1506) as superposition of a second layer sequence in a direction from the inside of the container precursor to the outside of the container precursor; wherein the first ply (1504) is joined to the second ply (1505) in the second composite region, and the second ply (1505) is joined to the third ply (1506) in the second composite region; wherein the carrier layer (1404) has a layer thickness in the third ply (1506) in the first composite region that is greater than the layer thickness in the first ply (1504), or greater than the layer thickness in the second ply (1505), or greater than the layer thickness in each of them; The carrier layer (1404) has a layer thickness in the second layer sheet (1505) in the second composite region that is smaller than the layer thickness in the first layer sheet (1504), or in the third layer sheet (1506), or in each of them.

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