Sheet-shaped composite, container, container production process and use of the composite or a container.

Abstract

 

Description

1 / 34 “SHEET-FORM COMPOSITE, CONTAINER, CONTAINER PRODUCTION PROCESS AND USE OF THE COMPOSITE OR A CONTAINER” Field of Invention The present invention relates generally to a sheet-shaped composite comprising a layered configuration with the following layers: or optionally, a layer of KSu thermoplastic; i. a carrier layer; ii. a first layer of KSv thermoplastic; iii. a barrier layer; iv. a second layer of KSa thermoplastic; and v. a third layer of KSw thermoplastic. The present invention also relates to a process for producing the sheet-shaped composite, a container surrounding an inner side and comprising at least one of these sheet-shaped composites, and a process for producing that container. History of the Invention For a long time, food, whether for human consumption or animal feed, has been preserved by storing it in a can or glass jar sealed with a lid. However, these packaging systems have some serious disadvantages, including high intrinsic weight, energy-intensive production, and complicated opening. Alternative packaging systems for storing food for extended periods with minimal loss are known in the state of the art. These are containers produced from sheet-shaped composites – often also called laminates. Such sheet-shaped composites are frequently constructed from a thermoplastic layer, a carrier layer typically made of paper or cardboard, an adhesion promoter layer, an aluminum layer, and an additional plastic layer. Such a sheet-shaped composite is described, among others, in WO 90 / 09926. These laminated containers already possess many advantages compared to conventional glass cans and jars, such as space-saving storage and low intrinsic weight. However, there are also possibilities for improvement in these packaging systems. Petition 870260051277, dated 05 / 28 / 2026, page 7 / 57 2 / 34 In regions of sheet composites exposed to high mechanical stresses during container production, particularly when using aluminum foil barrier layers, the formation of small defects such as cracks, fractures, bubbles, unsealed pockets, or microchannels leading to leaks is increasingly common. Germs can settle in these defects or even penetrate the containers, and as a result, the food inside can spoil more easily. Any damage to the barrier layer also creates problem areas regarding oxygen entry into the container, which in turn leads to losses in food quality and reduced shelf life.Regions containing markings, folded edges, or weaknesses in the sheet composite present specific risks, especially regions with cross-marking and folds, particularly in isolation or in various dimensions during container production. Brief Description of the Invention In general terms, the objective of the present invention is to eliminate, at least partially, the disadvantages arising from the prior art. There is also the objective of providing a sheet-form composite that is distinguished by improved vapor and oxygen impermeability, along with ease of processing and high reliability, particularly with regard to defect formation. An additional goal is to provide a composite that has the largest possible sealing window. An additional objective is to provide a sheet-form composite that is particularly suitable for the production of containers for transporting and storing milk, milk products, beverages containing vitamin C and other beverages, foodstuffs, beverages with low carbonic acid content, or animal feed and the like. A contribution to achieving at least one of the objectives mentioned above is made by the object of the category-building claims. The object of the sub-claims that are dependent on the category-building claims represents preferred concretizations of this contribution to achieving the objectives. A contribution to achieving at least one of the above objectives is made by a sheet-shaped composite comprising a sheet configuration with the following layers, preferably in the sequence shown: Petition 870260051277, dated 05 / 28 / 2026, page 8 / 57 3 / 34 optionally or necessarily, a layer of KSu thermoplastic; I. A carrier layer; ii. a first layer of KSv thermoplastic; iii. a barrier layer; iv. a second layer of KSa thermoplastic; and v. a third layer of KSw thermoplastic; where the Vicat softening temperature of the KSv thermoplastic layer and the Vicat softening temperature of the KSa thermoplastic layer are, in each case, higher than the Vicat softening temperature of the KSw thermoplastic layer. Brief Description of the Figures The present invention is now explained in more detail by the figures provided by way of example, which are not limiting, wherein the figures show: Figure 1 illustrates a schematic view of a container produced by means of the process according to the present invention; Figure 2 illustrates a schematic illustration of the process flow according to the present invention; Figure 3 illustrates a schematic view of a region of a container to be produced by means of the process according to the present invention; Figure 4a illustrates a schematic illustration of bending by means of the process according to the present invention; Figure 4b illustrates a schematic illustration of a fold using the process according to the present invention; Figure 5a illustrates a schematic view along section AA in the unfolded state; Figure 5b illustrates a schematic view along section AA in the bent state; Figure 6 illustrates a schematic illustration of a sheet-shaped composite that can be used in the process according to the present invention; Figure 7 illustrates a schematic illustration of a sheet-shaped composite that can be used in the process according to the present invention; Figure 8a illustrates a schematic illustration of a sonotrode and anvil arrangement before sealing; Petition 870260051277, dated 05 / 28 / 2026, page 9 / 57 4 / 34 Figure 8b illustrates a schematic view of a sonotrode and anvil arrangement during and at the end of sealing; Figure 9a illustrates the extrusion process (top view); and Figure 9b illustrates the extrusion process (side view). Detailed Description of the Invention The term “bonded” used in this descriptive report includes the adhesion of two objects beyond the van der Waals attractive forces. These objects may follow directly or be joined together by means of additional objects. For the sheet-form composite, this means, for example, that the carrier layer may be bonded directly and therefore immediately to the KSv thermoplastic layer or also indirectly by means of an adhesion-promoting layer, where a direct bond is preferred. The expression “comprising a layered configuration with layers, preferably in the sequence shown”, as used above, indicates that at least the indicated layers are present in the composite according to the present invention in the sequence shown. This expression does not necessarily indicate that these layers follow one another directly. Rather, this expression includes assemblies in which one or more additional layers may still be present between two layers mentioned successively in the sequence above. In addition to the layer configuration mentioned above, one or more additional layers may similarly be present as part of the composite. Thus, for example, at least one additional layer of the KSu thermoplastic may be provided alongside the environmentally directed carrier layer. The KSu thermoplastic layer may also be bonded directly or indirectly to the carrier layer, with direct bonding being preferred. Furthermore, for example, one or more additional layers can be provided over the area on the side of the KSu thermoplastic layer facing the environment, in whole or in part. In particular, a printed layer can also be applied over the side of the KSu thermoplastic layer facing the environment. Possible additional layers, however, are also protective or covering layers. According to another embodiment, it is also possible to provide a printed layer between the carrier layer and the KSu thermoplastic layer. In this case, the KSu thermoplastic layer itself may also act as a protective or covering layer for the printed layer. Petition 870260051277, dated 05 / 28 / 2026, page 10 / 57 5 / 34 If the sheet-form composite comprises at least one additional layer of KSu thermoplastic, this conventionally has a weight per unit area in the range of 5 to 50 g / m2, preferably in the range of 8 to 40 g / m2e, and more preferably in the range of 10 to 30 g / m2. Preferably, the KSu thermoplastic layer comprises a thermoplastic polymer of at least 70% by weight, preferably at least 80% by weight, and more preferably at least 95% by weight, in each case based on the KSu thermoplastic layer. Suitable thermoplastics for the KSu thermoplastic layer are particularly those that can be easily processed due to good extrusion properties.Among these, polymers obtained by chain polymerization are suitable, particularly polyesters or polyolefins, cyclic olefin copolymers (COCs), polycyclic olefin copolymers (POCs), particularly polyethylene and polypropylene, which are particularly preferred, where polyethylene is of very specific preference. Mixtures of at least two thermoplastics may also be used for the KSu thermoplastic layer. Among polyethylenes, HDPE, MDPE, LDPE, LLDPE, VLDPE and PE, as well as mixtures of at least two of these, are preferred according to the present invention. Suitable polyethylenes 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 more preferably in the range of 2.5 to 15 g / 10 min, and a density in the range of 0.890 g / cm3 to 0.980 g / cm3, preferably in the range of 0.895 g / cm3 to 0.975 g / cm3, and more preferably in the range of 0.900 g / cm3 to 0.970 g / cm3. At least one thermoplastic polymer contained in the KSu thermoplastic layer, preferably all the polymers contained in the KSu thermoplastic layer, preferably has a melting temperature in the range of 80 to 155°C, preferably in the range of 90 to 145°C, and most preferably in the range of 95 to 135°C. As a carrier layer, any material deemed suitable for this purpose by those skilled in the art may be used, possessing appropriate strength and stiffness to provide stability to the container to the point where, in the full state, the container essentially retains its shape. In addition to a range of plastics, fibrous plant-based plastics are preferred, particularly pulps, preferably sized, bleached and / or unbleached pulps, and paper and cardboard are particularly preferred. The weight per unit area of ​​the carrier layer is preferably in the range of 120 to 450 g / m², plus Petition 870260051277, dated 05 / 28 / 2026, page 11 / 57 6 / 34 preferably in the range of 130 to 400 g / m2, preferably higher, in the range of 140 to 380 g / m2. Suitable cardboard generally has a single or multi-layer configuration and may be coated on one or both sides with one or more layers of covering. Suitable cardboard also has a residual moisture content of less than 20% by weight, preferably 2 to 15% by weight and, more preferably, 4 to 10% by weight. The plastics described above for the KSu thermoplastic layer can preferably be used, particularly as the KSv thermoplastic layer, which preferably has a weight per unit area in the range of 5 to 40 g / m2, more preferably 8 to 30 g / m2, and more preferably 10 to 25 g / m2. Furthermore, the Vicat softening temperature of the KSv thermoplastic layer is in the range of 90°C to 150°C, preferably 95°C to 140°C, and most preferably 100°C to 135°C. In a preferred embodiment, the KSv thermoplastic layer is present in the form of a mixture of at least two thermoplastics. In this respect, it is further preferred that the KSv plastic layer comprises at least 25% by weight, more preferably at least 35% by weight, and preferably at least 45% by weight in each case based on the KSv plastic layer of a thermoplastic having a Vicat softening temperature of at least 90°C, preferably at least 95°C, and most preferably at least 100°C. This thermoplastic also preferably has a melting point of at least 110°C, preferably at least 115°C, and most preferably at least 120°C. This thermoplastic preferably has a density of at least 0.918 g / cm3, preferably at least 0.922 g / cm3, more preferably at least 0.925 g / cm3, and even more preferably, at least 0.930 g / cm3. In a specific embodiment of the aforementioned embodiment, the KSv plastic layer is present in the form of a mixture of a polyolefin prepared using a metallocene catalyst and an additional polymer, wherein the additional polymer is preferably a polyolefin that has not been prepared using a metallocene catalyst, preferably a polyethylene that has not been prepared using a metallocene catalyst (mPE). More preferably, the KSv thermoplastic layer is present in the form of a mixture of 25 to 95% by weight, preferably 35 to 85% by weight, and most preferably 45 to 75% by weight. Petition 870260051277, dated 05 / 28 / 2026, page 12 / 57 7 / 34 weight of mPE and 5 to 75% by weight, preferably 15 to 65% by weight and, more preferably, 25 to 55% by weight of PE, wherein the mPE described herein meets at least one, preferably at least two and, more preferably, all of the Vicat softening temperature, melting temperature, MFR value and density parameters mentioned above for the KSv thermoplastic layer. As a barrier layer, any material that is appropriate for this purpose and possesses adequate barrier action, particularly against oxygen, may be employed by those skilled in the art. The barrier layer is preferably selected from: a. a layer of plastic barrier; b. a metallic layer; c. a layer of metallic oxide; or d. a combination of at least two of (a) and (c). If the barrier layer is a plastic barrier layer according to alternative (a), it preferably comprises at least 70% by weight, more preferably at least 80% by weight, and preferably at least 95% by weight of at least one plastic known to those skilled in the art for this purpose, particularly due to barrier properties against gases or aromas that are suitable for packaging containers. Possible plastics, particularly thermoplastics, here are N- or O-bearing plastics, either alone or in mixtures of two or more. According to the present invention, it may be advantageous if the plastic barrier layer has a melting temperature in the range of more than 155 to 300°C, preferably in the range of 160 to 280°C, and more preferably in the range of 170 to 270°C. Preferably, the plastic barrier layer has a weight per unit area in the range of 2 to 120 g / m², preferably in the range of 3 to 60 g / m², more preferably in the range of 4 to 40 g / m², and preferably higher, in the range of 6 to 30 g / m². Furthermore, preferably, the plastic barrier layer can be obtained by melting, such as by extrusion, particularly layer extrusion. More preferably, the plastic barrier layer can also be introduced into the sheet-form composite by lamination. It is preferable in the present embodiment that a film is incorporated into the sheet-form composite. According to another embodiment, plastic barrier layers can also be selected that can be obtained by deposition of a solution or dispersion of plastics. Petition 870260051277, dated 05 / 28 / 2026, page 13 / 57 8 / 34 Suitable polymers are preferably those having a weight average molecular weight, determined by light diffusion gel permeation chromatography (GPC), in the range of 3 x 10³ to 1 x 10⁷ g / mol, preferably in the range of 5 x 10³ to 1 x 10⁶ g / mol and, more preferably, in the range of 6 x 10³ to 1 x 10⁵ g / mol. Suitable polymers are, in particular, polyamide (PA), polyethylene / vinyl alcohol (EVOH) or mixtures thereof. Among polyamides, all PAs that appear suitable for use according to the present invention are possible for those skilled in the art. PA 6, PA 6.6, PA 6.10, PA 6.12, PA 11, PA 12 or a mixture of at least two of these should be particularly mentioned, where PA 6 and PA 6.6 are particularly preferred and PA 6 is additionally preferred. PA 6 can be obtained commercially, for example, under the trade names Akulon®, Durethan® and Ultramid®. Amorphous polyamides, such as MXD6, Grivory® and Selar® PA, are additionally suitable. It is additionally preferable that the PA have a density in the range of 1.01 to 1.40 g / cm3, preferably in the range of 1.05 to 1.30 g / cm3 and, more preferably, in the range of 1.08 to 1.25 g / cm3. Furthermore, it is preferable that the PA have a viscosity number in the range of 130 to 185 ml / g, preferably in the range of 140 to 180 ml / g. As for EVOHs, all EVOHs that appear suitable for use according to the present invention are possible for those skilled in the art. Examples include, among others, those that can be obtained commercially in large quantities of different configurations under the trade name EVAL® from EVAL Europe NV, Belgium, such as types EVAL® F104B or EVAL® LR171B. Preferred EVOHs possess at least one, two, several, or all of the following properties: - Ethylene content in the range of 20 to 60 molar percent, preferably 25 to 45 molar percent; - density in the range of 1.0 to 1.4 g / cm3, preferably from 1.1 to 1.3 g / cm3; - melting point in the range of more than 155 to 235°C, preferably from 165 to 225°C; - MFR value (210°C / 2.16 kg if Tm(evoh) < 230°C; 230°C / 2.16 kg if 210°C < Tm(evoh) < 230°C) in the range of 1 to 25 g / 10 min, preferably 2 to 20 g / 10 min; - Oxygen permeation rate in the range of 0.05 to 3.2 cm3^20 μm / m2·day·atm, preferably in the range of 0.1 to 1 cm3*20 μm / m2·day·atm. Petition 870260051277, dated 05 / 28 / 2026, page 14 / 57 9 / 34 According to alternative (b), the barrier layer is a metallic layer. All layers with metals that are known to those skilled in the art and can provide high impermeability to light and oxygen are, in principle, suitable as a metallic layer. According to a preferred embodiment, the metallic layer may be present in the form of a sheet or a deposited layer, for example, formed by physical deposition in the gas phase. The metallic layer is preferably an uninterrupted layer. According to a further preferred embodiment, the metallic layer has a thickness in the range of 3 to 20 μm, preferably in the range of 3.5 to 12 μm and, more preferably, in the range of 4 to 10 μm. The metals that are preferably selected are aluminum, iron, or copper. A steel layer, for example, in sheet form, may be preferred over an iron layer. More preferably, the metal layer is an aluminum layer. The aluminum layer can conveniently be made of aluminum alloy, such as AlFeMn, AlFe1.5Mn, AlFeSi, or AlFeSiMn. The purity is conventionally 97.5% and higher, preferably 98.5% and higher, in each case based on the total aluminum layer. In a specific embodiment, the metal layer is made of aluminum foil. Suitable aluminum foils have an elongation capacity of more than 1%, preferably more than 1.3%, and more preferably more than 1.5%, and tensile strength of more than 30 N / mm², preferably more than 40 N / mm², and more preferably more than 50 N / mm².Alloys suitable for forming aluminum layers or sheets can be obtained commercially under the designations EN AW 1200, EN AW 8079 or EN AW 8111 from Hydro Aluminium Deutschland GmbH or Amcor Flexibles Singen GmbH. In the case of metal foil as a barrier layer, an adhesion promoter may be provided between the metal foil and the next thermoplastic layer on one and / or both sides of the metal foil. According to a specific embodiment of the container according to the present invention, however, an adhesion promoter is provided between the metal foil and the next thermoplastic layer on one side of the metal foil. Furthermore, preferably, a metal oxide layer may be selected as a barrier layer according to alternative (c). Possible metal oxide layers are all metal oxide layers that are familiar and appear appropriate to those skilled in the art to achieve a barrier action against light, vapor and / or gas. Metal oxide layers based on the metals aluminum, iron or copper already mentioned above and the Petition 870260051277, dated 05 / 28 / 2026, page 15 / 57 10 / 34 layers of metal oxides based on silicon or titanium oxide composites are particularly preferred. A metal oxide layer is produced, for example, by vapor deposition of a metal oxide onto a plastic layer, such as an oriented polypropylene film. A preferred process for this is gas-phase physical deposition. According to a further preferred embodiment, the metallic layer or the metallic oxide layer may be present in the form of a layer composite of one or more plastic layers with a metallic layer. This layer may be obtained, for example, by means of metal vapor deposition on a plastic layer, such as an oriented polypropylene film. A preferred process for this is gas-phase physical deposition. According to a further preferred embodiment of the composite according to the present invention, the sheet-shaped composite according to the present invention contains at least the thermoplastic layers KSv, KSa and KSw, wherein the thermoplastic layer KSa follows the barrier layer and preferably follows indirectly. The thermoplastic layer KSw preferably follows the KSa plastic layer and, more preferably, follows directly. The KSa thermoplastic layer preferably has a weight per unit area in the range of 5 to 50 g / m², more preferably 8 to 40 g / m², and, additionally, 10 to 30 g / m². The plastics already described above for the KSu thermoplastic layer, in particular, may, in turn, be preferably employed. Furthermore, the Vicat softening temperature of the KSa thermoplastic layer is in the range of 90 to 150°C, preferably 95 to 140°C, and, more preferably, 100 to 135°C. In a preferred embodiment, the KSa thermoplastic layer is present in the form of a mixture of at least two thermoplastics. In this particular embodiment, it is further preferred that the KSa thermoplastic layer comprises at least 25% by weight, more preferably at least 35% by weight, and preferably at least 45% by weight, in each case based on the KSa thermoplastic layer of a thermoplastic having a Vicat softening temperature of at least 90°C, preferably at least 95°C, and most preferably at least 100°C. This thermoplastic also preferably has a melting point of at least 110°C, preferably at least 115°C, and most preferably at least 120°C. This thermoplastic also preferably has a density of 0.918 Petition 870260051277, dated 05 / 28 / 2026, page 16 / 57 11 / 34 g / cm3, preferably at least 0.922 g / cm3, more preferably at least 0.925 g / cm3, and preferably even higher, at least 0.930 g / cm3. In a specific embodiment of the embodiment mentioned above, the KSa thermoplastic layer is present in the form of a mixture of a polyolefin prepared using a metallocene catalyst and an additional polymer, wherein the additional polymer is preferably a polyolefin that has not been prepared using a metallocene catalyst, preferably a polyethylene that has not been prepared using a metallocene catalyst.More preferably, the KSa thermoplastic layer is present in the form of a mixture of 25 to 95% by weight, preferably 35 to 85% by weight, and more preferably 45 to 75% by weight of mPE and 5 to 75% by weight, preferably 15 to 65% by weight, and more preferably 25 to 55% by weight of PE, wherein the mPE described herein meets at least one, preferably at least two, and more preferably all of the Vicat softening temperature, melting temperature, MFR value, and density parameters mentioned above for the KSv thermoplastic layer. The plastics already described above for the KSu, KSv, or KSa thermoplastic layers can preferably be used, particularly for the KSw thermoplastic layer, which preferably has a weight per unit area in the range of 2 to 60 g / m2, more preferably 5 to 50 g / m2, and more preferably 7 to 40 g / m2. Further preferably, the KSw thermoplastic layer occurs as a mixture of at least two thermoplastics. According to a preferred embodiment, the KSw thermoplastic layer is based on a mixture of at least two polymers, wherein one polymer preferably has a density in the range of 0.910 to 0.930 g / cm3, preferably 0.915 to 0.925 g / cm3. More preferably, this polymer has a melting point in the range of 100°C to 115°C. A second polymer preferably has a density in the range of 0.880 to 0.915 g / cm3, preferably 0.890 to 0.910 g / cm3, and more preferably, a melting point in the range of 90°C to 115°C. The KSw layer has a Vicat softening temperature in the range of 60 to 105°C, preferably 65 to 100°C, and more preferably 70 to 95°C. In a specific embodiment of the aforementioned embodiment, the KSw Thermoplastic layer is present in the form of a mixture of a polyolefin prepared using a metallocene catalyst and an additional polymer, wherein the additional polymer is preferably a Petition 870260051277, dated 05 / 28 / 2026, page 17 / 57 12 / 34 polyolefin that has not been prepared using a metallocene catalyst, preferably a polyethylene that has not been prepared using a metallocene catalyst. More preferably, the KSw plastic layer is present in the form of a mixture of 65 to 95% by weight, preferably 70 to 90% by weight and, more preferably, 75 to 85% by weight of mPE and 5 to 35% by weight, preferably 10 to 30% by weight and, more preferably, 15 to 25% by weight of PE. In a further embodiment, the KSw Thermoplastic layer is present in the form of a mixture of 15 to 45% by weight, preferably 20 to 40% by weight, and more preferably 25 to 35% by weight of mPE and 55 to 85% by weight, preferably 60 to 80% by weight, and more preferably 65 to 75% by weight of PE. According to a further preferred embodiment, one or more or all of the thermoplastic layers of the KSv, KSa, KSw, and optionally KSu composite may also comprise an inorganic solid in the form of filler, in addition to a thermoplastic polymer. In this particular case, it is preferable that the specific thermoplastic layer comprises a thermoplastic polymer or a mixture of polymers up to at least 60% by weight, preferably at least 80% by weight, and more preferably at least 95% by weight, in each case based on the corresponding thermoplastic layer. All solids that seem appropriate to those skilled in the art are possible as inorganic solids, preferably particulate solids, preferably metallic salts or oxides of di- to tetravalent metals. Examples that may be mentioned herein are calcium sulfates or carbonates, barium or magnesium dioxide, or titanium dioxide, preferably calcium carbonate.The average particle sizes (d50%) of inorganic solids, determined by sieve analysis, are preferably in the range of 0.1 to 10 μm, preferably in the range of 0.5 to 5 μm, and most preferably in the range of 1 to 3 μm. According to a further preferred embodiment, at least one, preferably at least two, and even more preferably at least three of the layers of KSv, KSa, KSw, or optionally KSu thermoplastic are a mixture of at least two plastics. Preferably, at least one of the thermoplastic layers KSv, KSa, KSw or optionally KSu contains at least one polyolefin with a bulk density in the range of 0.918 g / cm3 to 0.980 g / cm3, preferably from 0.922 to 0.970 g / cm3, more preferably from 0.925 to 0.965 g / cm3 and, additionally, from 0.930 to 0.960 g / cm3 in the range of 20% to 100% by weight. Petition 870260051277, dated 05 / 28 / 2026, page 18 / 57 13 / 34 by weight, preferably from 45 to 95% by weight and, more preferably, from 65 to 85% by weight, in each case based on the total weight of the plastic layer. More preferably, one of the KSv and KSa thermoplastic layers has the aforementioned mass density. According to a further preferred embodiment, the two KSv and KSa thermoplastic layers have mass densities in the range mentioned above. More preferably, the mass density of the KSw thermoplastic layer does not lie within the mentioned range. According to a further preferred embodiment, the KSv, KSa, KSw and optionally KSu thermoplastic layers have melting temperatures in the range of 80 to 155°C. According to the present invention, the Vicat softening temperature of the KSv thermoplastic layer and the Vicat softening temperature of the KSa thermoplastic layer are, in each case, higher, more preferably in each case at least 4 K, at least 6 K, at least 8 K, at least 10 K, at least 12 K, at least 14 K, at least 16 K, or at least 18 K higher than the Vicat softening temperature of the KSw thermoplastic layer. Maximum differences in Vicat softening temperatures of 60 K are frequently observed. Ideally, the Vicat softening temperature of at least one layer of KSv thermoplastic and at least one layer of KSa thermoplastic, in each case, is in the range of 90 to 150°C, 95 to 140°C, or 100 to 135°C. The Vicat softening temperature of at least one layer of KSw thermoplastic is preferably in the range of 60 to 105°C, 65 to 100°C, or 70 to 95°C. According to a further preferred embodiment, the melting temperature of the KSv thermoplastic layer and the melting temperature of the KSa thermoplastic layer in each case is higher, more preferably in each case at least 3 K or 4 K, at least 6 K, at least 8 K, at least 10 K, at least 12 K, at least 14 K, at least 16 K or at least 18 K higher than the melting temperature of the KSw thermoplastic layer. Further preferably, the melting temperature of the KSv thermoplastic layer and the KSa thermoplastic layer, in each case, is in the range of 100 to 150°C or 105 to 140°C. The melting temperature of the KSw thermoplastic layer is preferably in the range of 80 to 125°C, 85 to 120°C or 90 to 115°C. According to a further preferred embodiment, the modulus of the difference between the Vicat softening temperature of the thermoplastic layer Petition 870260051277, dated 05 / 28 / 2026, p. 19 / 57 14 / 34 KSv and the Vicat softening temperature of the KSa thermoplastic layer are in the range of 0 to 10 K, in the range of 0 to 5 K, in the range of 0 to 3 K, or in the range of 0.1 to 1.8 K. According to a further preferred embodiment, the magnitude of the difference between the melting temperature of the KSv thermoplastic layer and the melting temperature of the KSa thermoplastic layer is in the range of 0 to 10 K, in the range of 0 to 5 K, in the range of 0 to 3 K, or in the range of 0.1 to 1.8 K. Possible adhesion promoters in the adhesion promoter layer are all plastics that, due to functionalization through appropriate functional groups, are suitable for generating a firm bond by forming ionic or covalent bonds to the surface of the other specific layer. Preferably, these are functionalized polyolefins obtained by copolymerization of ethylene with acrylic acids, such as acrylic acid, methacrylic acid, crotonic acid, acrylates, acrylate derivatives, or carboxylic acid anhydrides that conduct double bonds, such as maleic anhydride, or at least two of these. Among these, polyethylene maleic anhydride graft polymers (EMAH), ethylene acrylic acid copolymers (EAA), or ethylene methacrylic acid copolymers (EMAA) are preferred, which are marketed, for example, under the trade names Bynel® and Nucrel® 0609HSA from DuPont or Escor® 6000ExCo from ExxonMobile Chemicals. In one embodiment of the process according to the present invention, it is preferable, for further improvement of the adhesion of two adjacent layers to each other, that these be subjected to surface treatment, for example, during coating. Suitable surface treatment processes are flame treatments, plasma treatments, corona treatments or ozone treatments known, among others, to those skilled in the art. Other processes that have the effect of forming functional groups on the surface of the treated layer are also conceivable, however. In a specific embodiment, at least one of these processes is used in the lamination of metallic layers, particularly metallic sheets. In order to facilitate the opening of the container according to the present invention, the carrier layer may have at least one orifice. In a specific embodiment, the orifice is covered at least with the barrier layer and at least one of the KSa or Thermoplastic KSw layers as orifice cover layers. Petition 870260051277, dated 05 / 28 / 2026, p. 20 / 57 15 / 34 According to a further preferred embodiment, the composite carrier layer has a hole that is covered at least with the KSv thermoplastic layer, the barrier layer, and the KSa and KSw thermoplastic layers as hole cover layers. It is particularly preferable that the hole is additionally covered with the KSu thermoplastic layer. One or more additional layers, particularly adhesion-promoting layers, may be additionally provided between the aforementioned layers. It is preferable in the present embodiment that the hole cover layers are bonded to each other at least partially, preferably up to at least 30%, preferably at least 70%, and most preferably up to at least 90% of the area formed by the hole.According to one specific embodiment, however, the orifice may penetrate through the entire composite and be covered by an opening or closing device that closes the orifice. With regard to a first preferred embodiment, the orifice provided in the carrier layer may have any shape known to those skilled in the art and is suitable for various closures, straws or opening aids. The opening of this container is usually achieved by at least partially destroying the layers of orifice covering that enclose the orifice. This destruction can be effected by cutting, applying pressure to the container, or removing the container. Alternatively, destruction can be achieved by a closure that can be opened and attached to the container and positioned in the region of the orifice, typically above the orifice, or by a straw that is pushed through the layers of orifice covering that enclose the orifice. According to a further preferred embodiment, the composite carrier layer has a series of perforations, wherein the individual perforations are covered at least with the barrier layer and one of the KSa and KSw thermoplastic layers as perforation cover layers. A container produced from this composite can then be operated by tearing along the perforation. These perforations are preferably generated by means of a laser. The use of laser beams is particularly preferred if a metal sheet or metallized sheet is employed as a barrier layer. It is also possible that the perforation is introduced by mechanical perforating tools, typically having blades. Petition 870260051277, dated 05 / 28 / 2026, page 21 / 57 16 / 34 According to a further preferred embodiment, the sheet-shaped composite is subjected to heat treatment at least in the region of the hole(s). In the case of multiple holes present in the carrier layer in the form of perforations, it is particularly preferable that this heat treatment is also conducted around the hole end region. Heat treatment can be carried out by means of radiation, hot gas, thermal contact with a solid, mechanical vibrations, or a combination of at least two of these methods. Particularly preferred, heat treatment is carried out by means of irradiation, preferably electromagnetic radiation and, more preferably, electromagnetic induction, or also by hot gas. The specific ideal operating parameters to be selected are known to those skilled in the art. According to a further preferred embodiment, the thermoplastic layers of the sheet-form composite, particularly the KSv and KSa thermoplastic layers, do not contain co-monomers known to those skilled in the art to have an adhesion-enhancing effect. These copolymers are mentioned, among others, in the adhesion-promoting layers mentioned above. In particular, the KSv and KSa thermoplastic layers are therefore, as a rule, unsuitable as adhesion promoters or as adhesive layers. The present invention also provides a process for producing the sheet-form composite described above. All processes known to those skilled in the art and appearing appropriate for producing the composite according to the present invention are feasible for this purpose. According to a preferred embodiment, the sheet-shaped composite according to the present invention can be produced by means of a process comprising, among others, the following process steps: A. Provision of a composite precursor comprising at least the carrier layer; B. application of at least one layer of thermoplastic to one side of the composite precursor; and C. Application of at least one additional layer of thermoplastic to the opposite side of the composite precursor. In the process step according to the present invention, a composite precursor comprising at least a carrier layer is first produced. The composite precursor essentially includes the carrier layer, which may already have one or more holes and to which a substrate is applied. Petition 870260051277, dated 05 / 28 / 2026, page 22 / 57 17 / 34 optionally at least one printed layer. Preferably, however, this composite precursor is a non-printed carrier layer. In step B, at least one layer of thermoplastic is applied to the supplied composite precursor. The application of this at least one layer is preferably carried out by means of melt coating, preferably by means of extrusion coating. It is also conceivable, however, that several layers, such as thermoplastic layers, barrier layers and / or adhesion-promoting layers, are applied sequentially or simultaneously by means of co-extrusion in step B. In step C, at least one additional layer of thermoplastic is applied to the opposite side of the composite precursor. The application of this at least one additional layer of thermoplastic is preferably carried out by means of melt coating, preferably by means of extrusion coating. It is also conceivable, however, that several layers, such as thermoplastic layers, barrier layers and / or adhesion-promoting layers, are applied sequentially or simultaneously by means of co-extrusion in step C. During the application of individual layers, in a preferred embodiment, a film or a multi-layered composite film in roll form is provided and laminated onto the composite by means of additional layers, preferably thermoplastic layers or adhesion-promoting layers. This is particularly the case during the introduction of metallic layers, especially metal foils. If the sheet composite has one or more holes to facilitate opening, these can be introduced into the sheet composite before step A, after step B, or after step C. In a preferred embodiment of the process, an unprinted carrier layer that already has holes is provided as a composite precursor in step A. In step B, the KSu thermoplastic layer is then applied first to the composite precursor. In the additional process step C, the KSv thermoplastic layer, the barrier layer, the KSa thermoplastic layer, and the KSw thermoplastic layer are then applied. In each case, one or more adhesion-promoting layers may also be co-applied herein. In another embodiment, however, it is also conceivable that, in step B, the KSv thermoplastic layer, the barrier layer, the KSa thermoplastic layer, and the KSw thermoplastic layer are applied first. In step C, the layer of Petition 870260051277, dated 05 / 28 / 2026, page 23 / 57 18 / 34 thermoplastic KSu. Also at this point, in each case, additional layers, such as adhesion-promoting layers, can be co-applied. Extrusion can be carried out in individual layers by a series of successive individual extruders or also in several layers by means of co-extrusion, in which the aforementioned sequence of individual layers is always maintained. A combination of extrusion coating and lamination can also take place in the process according to the present invention. With regard to the sheet-form composite, but also with regard to the composite precursor, it is preferable that at least one of the two has at least one or two or more markings along which ends are formed during the production of the container. This facilitates folding and the formation of a fold that runs along the line prepared by the marking, in order to achieve a fold that is as uniform and precisely positioned as possible. The markings can be introduced before step A, after step B, or also after step C, where it is preferable that the markings be made after step C, i.e., after coating both sides of the carrier layer. As a rule, sheet composite is produced, usually as a roll product, by co-extruding the individual layers of sheet composite. Markings are applied to these roll products. However, it is also possible to apply markings to the carrier layer before coating. According to a further preferred embodiment of the process according to the present invention for the production of a sheet-shaped composite, it is preferable, especially if the carrier layer, as described above, includes one or more holes, for at least one of the KSv, KSa, KSw or optionally KSu plastic layers to be stretched during application, wherein this stretching is preferably conducted by means of melt stretching, most specifically by means of monoaxial melt stretching. For this purpose, the layer is applied in the molten state to the composite precursor by means of a melt extruder and the applied layer, which is still in the molten state, is then stretched, preferably in the monoaxial direction, in order to achieve polymer orientation in that direction. The applied layer is then held to cool for thermosetting purposes. With regard to this aspect, it is particularly preferable that the stretching be carried out at least through the following application steps: Petition 870260051277, dated 05 / 28 / 2026, p. 24 / 57 19 / 34 b1. exit of at least one layer of thermoplastic as at least one molten film through at least one extruder die slit with exit velocity Vexit; and b2. application of at least one molten film to the moving composite precursor with respect to at least one extruder die slit with movement velocity Vadv; where Voutput < Vadv. It is particularly preferable that Vadv be greater than Voutput by a factor in the range of 5 to 200, particularly preferably in the range of 7 to 150, most preferably in the range of 10 to 50, and most preferably in the range of 15 to 35. In this context, it is preferable that Vadv be at least 100 m / min, more preferably at least 200 m / min, and most specifically at least 350 m / min, but conventionally it does not rest above 1300 m / min. After the fusion layer is applied to the composite precursor via the stretching process described above, the fusion layer is kept cool for heat setting purposes, wherein this cooling is preferably conducted by contact cooling with a surface that is maintained at a temperature in the range of 5 to 50°C, more preferably in the range of 10 to 30°C. As described above, after heat setting it can be particularly advantageous if the sheet composite is heat treated at least in the region of the hole(s), in order to achieve at least partial elimination of the polymer orientation. According to a further preferred embodiment, at least one, preferably two, or even all layers of thermoplastic KSv, KSa, KSw, or optionally KSu are produced by extruding or co-extruding at least one polymer P1 through a slit die to obtain an emergent surface, with at least one polymer P2 differing from polymer P1 being provided on the flanks of the surface of at least one polymer P1 emerging from the slit die. Thermoplastic polymers are preferably selected as polymer P2. Preferred thermoplastic polymers have a high branching rate, a wide molecular weight distribution, and, in the case of extrusion coating, after exiting the die, have a low tendency to fold and form end waves or film contact. Preferred embodiments relating to the production of sheet-form composite employing at least one or more, up to all, layers of thermoplastic from thermoplastics that can be produced by means of Petition 870260051277, dated 05 / 28 / 2026, page 25 / 57 20 / 34 extrusion or coextrusion have already been described above. The selection of thermoplastic to be used depends on which of the KSu, KSv, KSa or KSw thermoplastic layers must be produced by extrusion or coextrusion. With regard to the appropriate and preferred thermoplastics, reference is made to the description of the KSu, KSv, KSa and KSw plastic layers. The selected thermoplastic or thermoplastic mixture then forms the specific thermoplastic layer P1. During the coextrusion of different layers, the surface F is formed from several different thermoplastics or plastic mixtures P1. With regard to the efficient use of materials, in a preferred embodiment, polymer P2 can also similarly be a component of surface F. One or more thermoplastics, preferably polyethylenes, more preferably LDPE, and most preferably LDPE prepared in an autoclave reactor, are particularly suitable as polymer P2. As an example, suitable polymers are 23L430 or 19N430 from Ineos. It is also conceivable that a mixture of at least two suitable polymers could be used as the P2 end layer. Polymer P1 and polymer P2 are preferably co-extruded. They therefore form closely bonded regions of the emerging surface. There are essentially two variants at present of how the polymer P2 stream can be fed into the extruder die. If P2 is also a component of film F, it can be branched into a separate polymer stream in the feed block and passed to the end region of the extruder die. Alternatively, an additional extruder can also be provided that supplies P2 and carries it to the extruder die. During extrusion, thermoplastics are conventionally heated to temperatures of 210 to 330°C, measured on the molten polymer film below the exit in the extruder die. Extrusion can be carried out using extrusion tools that are known to those skilled in the art and can be obtained commercially, such as extruders, extruder screws, feed blocks, etc. According to a further preferred embodiment, the emerging area is cooled to a temperature below the lowest melting temperature of polymers P1 and P2 provided on that surface or its flanks, and at least the flanks of the surface are then separated from that surface. The cooling may be conducted in any manner familiar to those skilled in the art and appearing appropriate. The thermosetting already described above is also Petition 870260051277, dated 05 / 28 / 2026, p. 26 / 57 21 / 34 preferred at present. At least the flanks are separated next to surface F. The separation may be conducted in any manner that is familiar to those skilled in the art and appears to be appropriate. Preferably, the separation is conducted by a knife, laser beam or water jet or a combination of two or more of these, wherein the use of knives, especially cutting knives, is particularly preferred. The present invention also provides a container that surrounds an inner side and comprises at least the sheet-shaped composite described above. The embodiments, and particularly the preferred embodiments, described with respect to the sheet-shaped composite according to the present invention are also preferred for the container according to the present invention. The present invention also provides a process for producing containers that surround an inner side, comprising the process steps, preferably in the sequence shown: a. Supply of a sheet-form composite comprising a layered configuration with the following layers: or optionally, a layer of KSu thermoplastic of a KSum plastic composition; i. a carrier layer; ii. a first layer of KSv thermoplastic of a KSvm plastic composition; iii. a barrier layer; iv. a second layer of KSa thermoplastic from a Ksam plastic composition; and v. an additional layer of KSw thermoplastic over a KSwm plastic composition; wherein the Vicat softening temperature of the KSvm plastic composition and the Vicat softening temperature of the Ksam plastic composition are, in each case, higher than the Vicat softening temperature of the KSwm plastic composition; b. folding the sheet-shaped composite to form a fold with at least two fold surfaces adjacent to each other, where layer (v) faces the inside of the container; and c. joining, in each case, at least one region of part of the at least two folding surfaces to form a container region. Petition 870260051277, dated 05 / 28 / 2026, p. 27 / 57 22 / 34 The plastic compositions employed according to the present invention can be made from a single thermoplastic or from two or more thermoplastics. The above statements apply herein, consequently, to thermoplastics and thermoplastic layers. Generally, the plastic composition can be fed into an extruder in any form that is suitable for extrusion for those skilled in the art. Preferably, the plastic compositions are employed in the form of powders or granules, preferably in the form of granules. The embodiments, and particularly the preferred embodiments, described with respect to the sheet-shaped composite according to the present invention are also preferred in the process according to the present invention for producing the container around an inner side. It is particularly preferable that the Vicat softening temperature of the KSvm plastic composition and the Vicat softening temperature of the KSam plastic composition, in each case, are also higher than the Vicat softening temperature of the KSwm plastic composition. In the process according to the present invention, it is further preferred that the Vicat softening temperature of the KSv plastic composition and the Vicat softening temperature of the KSam plastic composition in each case be higher, more preferably in each case at least 4 K, at least 6 K, at least 8 K, at least 10 K, at least 12 K, at least 14 K, at least 16 K or at least 18 K higher than the Vicat softening temperature of the KSwm plastic composition. The embodiments, and particularly the preferred embodiments, described with respect to the sheet-shaped composite according to the present invention are also preferred in the process according to the present invention for producing the container around an inner side. If the roll products that have markings are not used directly in step (a), container models for an individual container are obtained from the roll products, which are supplied as the sheet-form composite in step (a). The container according to the present invention can have a large number of different shapes, but a structure that is essentially square in shape is preferred. The container can be additionally formed over its entire surface from sheet-shaped composite or can have a configuration with two or multiple parts. In the case of a multi-part configuration, it is conceivable that, in addition to the composite in Petition 870260051277, dated 05 / 28 / 2026, page 28 / 57 23 / 34 sheet form, other materials may also be employed, such as plastic materials, which may be used particularly in the upper or lower regions of the container. It is preferable, however, that the container be constructed from sheet-form composite up to at least 50%, more preferably up to at least 70%, and preferably even higher, up to at least 90% of the surface. In addition, the container may have a device for emptying the contents. This may be formed, for example, from plastic material and fixed to the outside of the container. It is also conceivable that this device be integrated into the container by means of “direct injection molding”. According to a preferred embodiment, the container according to the present invention has at least one, preferably 4 to 22, or more extremities, more preferably 7 to 12 extremities. In the context of the present invention, extremity is understood to mean regions that are formed on the fold of a surface. Extremities that may be mentioned as examples are the elongated contact regions, in each case, of two container wall surfaces. In the container, the container walls preferably represent the container surfaces framed by the extremities. In process step (a) of the process according to the present invention, a sheet-shaped composite is first provided, obtained by means of the sheet-shaped composite production process described above, from which a container precursor is then formed by bending in process step (b). In one embodiment of the process according to the present invention, in step (b), at least one, preferably at least two of the KSv, KSa, KSw and optionally KSu thermoplastic layers, preferably in addition to at least the KSa and KSw thermoplastic layers and, more preferably, each of the KSv, KSa, KSw and optionally KSu thermoplastic layers has a temperature above the melting temperature of the specific layer. In another embodiment of the process according to the present invention, in step (b), at least one, preferably at least two of the KSv, KSa, KSw and optionally KSu thermoplastic layers, preferably in addition to at least the KSa and KSw thermoplastic layers and, more preferably, each of the KSv, KSa, KSw and optionally KSu thermoplastic layers has a temperature below the melting temperature of the specific layer. Petition 870260051277, dated 05 / 28 / 2026, page 29 / 57 24 / 34 According to a further preferred embodiment of the process according to the present invention, at least one, preferably at least two of the thermoplastic layers KSv, KSa, KSw and optionally KSu, preferably at least the KSa and thermoplastic layers KSw or also all of the thermoplastic layers KSv, KSa, KSw and optionally KSu have a melting temperature below the melting temperature of the barrier layer. The melting temperatures of at least one, preferably at least two, preferably additionally at least the KSa and KSw thermoplastic layers, or also all the KSv, KSa, KSw and optionally KSu thermoplastic layers, and the melting temperature of the barrier layer differ preferably by at least 1 K, more preferably by at least 10 K, preferably even higher by at least 50 K, and preferably higher by at least 100 K. The temperature difference should preferably be selected so high only so that the melting of the barrier layer, particularly the melting of the plastic barrier layer, does not occur during bending. In the process according to the present invention, In a further embodiment, an additional fold follows step (c) in the form of step (d), wherein, in the additional fold, at least one, preferably all of the thermoplastic layers KSv, KSa, KSw and optionally KSu have a temperature that is lower than the melting temperature of that thermoplastic layer. According to the present invention, in the present context, "folding" is understood to mean an operation in which, preferably, an elongated fold forming an angle is generated in the folded sheet composite by means of a bending end of a bending tool. For this purpose, two adjacent surfaces of a sheet composite are often further folded towards each other. By folding, at least two adjacent fold surfaces are formed, which can then be joined at least partially to form a container region. According to the present invention, the joining can be carried out by any measure that seems appropriate to those skilled in the art and that enables a joining that is as airtight as possible to gases and liquids. The joining can be carried out by means of sealing, gluing, or a combination of the two measures. In the case of sealing, the joining is created by means of a liquid and its solidification.In the case of gluing, chemical bonds are formed that create the union. Petition 870260051277, dated 05 / 28 / 2026, page 30 / 57 25 / 34 between the interfaces or surfaces of the two objects to be joined. In the case of sealing or gluing, it is often advantageous for the surfaces to be sealed or glued so that they can be pressed together. The sealing temperature is preferably selected in such a way that the thermoplastic(s) involved in the seal, preferably the polymers of the KSw thermoplastic layer and / or optionally the KSu thermoplastic layer, are present in molten form. The sealing temperatures are therefore at least 1 K, preferably at least 5 K, and more preferably at least 10 K above the melting temperature of the specific plastic. Furthermore, the selected sealing temperature should not be too high, so that the exposure of the plastic(s) to heat is not unnecessarily severe, thus preventing the loss of their idealized material properties. In a further preferred embodiment of the process according to the present invention, it is envisioned that the container is filled with food before step (b) or after step (c). All foods known to those skilled in the art for human consumption and also animal feed are possible as food. Preferred foods are liquids above 5°C, such as dairy products, soups, sauces and non-carbonated beverages. The filling can be carried out in several ways. On the one hand, the food and the container can be sterilized separately, before filling, to the highest possible degree by means of appropriate measures, such as treatment of the container with H2O2, UV radiation or other appropriate high-energy radiation, plasma treatment or a combination of at least two of these, as well as heating the food, and the container is then filled.This type of filling is often called "aseptic filling" and is preferred according to the present invention. In addition to, or also in place of, aseptic filling, it is still a widespread procedure to heat the food-filled container to reduce the germ count. This is preferably carried out by pasteurization or autoclaving. Less sterile foods and containers can also be used in the present procedure. In carrying out the process according to the present invention in which the container is filled with food before step (b), it is preferable that a tubular structure with a fixed longitudinal seam be formed first with the sheet-shaped composite by sealing or gluing the overlapping boundaries. This tubular system is laterally compressed, fixed, separated and Petition 870260051277, dated 05 / 28 / 2026, p. 31 / 57 26 / 34 formed in an open container by means of folding, sealing or gluing. The food present may already be filled into the container before fixing and before separating and folding the base in the direction of step (b). In carrying out the process according to the present invention, in which the container is filled with food after step (c), it is preferable to use a container that is obtained by molding the composite into a sheet shape and open on one side. The molding of the composite into a sheet shape and the obtaining of this open container can be carried out by steps (b) and (c) by means of any procedure that appears appropriate for this purpose to those skilled in the art. In particular, the molding can be carried out by means of a procedure in which sheet-shaped container molds that already take into account the shape of the container in their cross-section are folded in such a way as to form a precursor of an open container.This is a rule effected by a procedure in which, after folding this container mold, its longitudinal ends are sealed or glued to form a side wall, and one side of the container precursor is closed by means of folding and additional fastening, particularly sealing or gluing. In a further embodiment of the process according to the present invention, it is preferable that the bending surfaces form an angle μ of less than 90°, preferably less than 45°, and most preferably less than 20°. Bending surfaces are often bent to the point where they come into contact with each other at the end of the bend. This is particularly advantageous if the bending surfaces resting on one another are then joined together to form the container base and the container top, which is often configured in a ridge-like or flat configuration. With reference to the ridge configuration, reference may be made, by way of example, to WO 90 / 09926 A2. Furthermore, in one embodiment of the process according to the present invention, at least the KSw thermoplastic layer or, optionally, the KSu thermoplastic layer or both are heated above the melting temperature of the thermoplastic layers before step (c). Preferably, before step (c), more preferably directly before step (c), heating is conducted to temperatures that are at least 1 K, preferably at least 5 K and, more preferably, at least 10 K above the melting temperature of these layers. The temperature should, as far as possible, be higher than the melting temperature of the specific plastic. Petition 870260051277, dated 05 / 28 / 2026, page 32 / 57 27 / 34 until the point where, through cooling due to bending, movement and pressure, the plastic does not cool down to the point where it becomes solid again. Preferably, heating to these temperatures is carried out by means of irradiation, mechanical vibrations, contact with hot solid or hot gas, preferably hot air, or a combination of these measures. In the case of irradiation, any type of radiation that is suitable for softening the plastic is acceptable to those skilled in the art. Preferred types of radiation are IR rays, UV rays, microwaves, or also electromagnetic radiation, particularly electromagnetic induction. Preferred types of vibration are ultrasound. In the process according to the present invention, it is further preferred that the maximum transmission intensity of at least one of the perforated covering layers comprising a stretched polymer be different before and after heat treatment. This can be conventionally determined by different representations of the observed region through a polarizing filter. The heat-treated regions therefore differ in contrasts between light and dark from regions on a surface that are adjacent to them but have not been heat-treated. Furthermore, a difference in brightness due to the change in structure of the inner polymer layer resulting from the heat treatment should generally be detected, compared to regions that have not been heat-treated. The same applies to regions before and after heat treatment. In addition to the perforated cover layers, additional regions of the sheet composite can also be heat-treated. These also exhibit different maximum transmission intensity compared to untreated regions. These include all regions where sealing is performed and / or bend markings are provided. Among these regions, longitudinal seams where the sheet composite is formed into a tubular or wrap-like structure are particularly preferred. After the above heat treatment, the heat-treated regions can be allowed to cool again. According to the embodiments above, the present invention also provides the use of the sheet-shaped composite according to the present invention or of a container produced from it or comprising such composite for food storage, particularly for sterilized food. Petition 870260051277, dated 05 / 28 / 2026, page 33 / 57 28 / 34 Testing methods: Unless otherwise specified herein, the parameters mentioned herein are measured using ISO specifications. These are, to determine: - MFR value: ISO 1133 (unless otherwise indicated, at 190°C and 2.16 kg); - density: ISO 1183-1; - the melting temperature using the DSC method: ISO 11357-1, -5; if the sample is based on a mixture of various plastics and the determination of the melting temperature by the method mentioned above generates several peak temperatures Tp, of which the highest peak temperature Tp,m that should be attributed to a plastic in the mixture of plastics is defined as the melting temperature. The equipment is calibrated according to the manufacturer's instructions using the following measurements: - initial indium temperature; - indium fusion heating; and - initial zinc temperature; - Molecular weight distribution by light-diffusion gel permeation chromatography: ISO 16014-3 / -5; - PA viscosity number: ISO 307 in 95% sulfuric acid; - Oxygen permeation rate: ISO 14663-2 Annex C at 20°C and relative atmospheric humidity of 65%; - Vicat softening temperature: ISO 306: 2004, VST-A50 method (load = 10 N, temperature rise = 50 K / h) using an oil heating bath; - the moisture content of cardboard: ISO 287: 2009; - the tensile strength or tensile strength of aluminum foil: ISO 546-1. To determine the adhesion of two adjacent layers, these are fixed on a rotating roller on a 90° peel test apparatus, for example, the “German rotating wheel installation”, which rotates at 40 mm / min during measurement. The samples were previously cut to the size of 15 mm wide strips. On one side of the sample, the layers are separated from each other and the separated end is clamped onto a tensioning device directed perpendicularly upwards. A measuring device to determine the tensile force is attached to the tensioning device. By rotating the roller, all the force necessary to separate the layers is applied. Petition 870260051277, dated 05 / 28 / 2026, page 34 / 57 The bond strength between 29 / 34 layers is measured. This strength corresponds to the adhesion of the layers to each other and is indicated in N / 15 mm. The separation of the individual layers can be carried out, for example, mechanically or by means of a directed pre-treatment, for example by softening the sample for three minutes in hot 30% acetic acid at 60°C. To determine the Vicat softening temperature on individual layers of the composite, the layer to be investigated is separated from the remaining layers by mechanical or chemical means. It is essential to ensure that no contamination of the samples by adjacent layers occurs. From the sample material collected in this way, a test sample can be established according to the dimensions indicated in ISO 306:2004, and the Vicat softening temperature can be determined according to the aforementioned standard. If the plastic material to be investigated is present in the form of flakes or pieces, these are processed to generate a homogeneous test sample. This can be carried out by means of pressure, careful heating, or both. EXAMPLE Sheet-shaped composites were produced using the coating process described above through process steps AC. A carrier layer, optionally containing closure holes or straws, is taken first. This is coated first according to process step a with the KSu plastic layer and, in process step c, first the KSv plastic layer, the adhesion promoter layer, and then the barrier layer, followed by an adhesion promoter layer of the KSa plastic layer and, finally, the KSw plastic layer are applied next to the carrier layer back to the KSu plastic layer. This is a procedure conducted in a commercially available coating facility. Petition 870260051277, dated 05 / 28 / 2026, page 35 / 57 30 / 34 Layer Weight per unit area or film thickness KSu 20 g / m2 100% by weight (4) Carrier layer 220 g / m2 (2) KSv 18 g / m2 70% by weight (5) / 30% by weight (4) Adhesion promoter 3 g / m2 100% by weight (8) Barrier layer 6 pm (1) Adhesion promoter 4 g / m2 100% by weight (7) KSa 22 g / m2 70% by weight (5) / 30% by weight (4) KSw 10 g / m2 70% by weight (3) / 30% by weight (6) (1) Aluminum foil, EN AW 8079, tensile strength: 75 N / mm2, tensile strength: 1.7% of Hydro Aluminium Deutschland GmbH. (2) Cardboard, Stora Enso Natura. (3) 19N430 from Ineos. (4) 23L430 from Ineos. (5) Lumicene® nPE M 4040 from Total Petrochemicals. (6) Affinity® PT 1451G1 from Dow Chemicals. (7) Escor 6000 HSC from ExxonMobile. (8) Novex M21N430 from Ineos. Figure 1 shows a container (2) surrounding an inner side (1) and made of a sheet-shaped composite (3). The container (2) is shown with the upper side of the container (12) facing upwards. The container (2) is made of the sheet-shaped composite (3) which includes at least the carrier layer (4). The container (2) may additionally include a hole (36). Figure 2 shows a schematic flow of devices and production steps through the process according to the present invention. In a composite production (20), the sheet-shaped composite (3) is produced from a carrier layer (4), a barrier layer (5) and the thermoplastic layers KSa (6), KSv (35) and KSw (7), optionally an additional thermoplastic layer Ksu (13) and, if necessary, at least one adhesion promoter layer (19) by means of an extrusion process and is normally supplied in the form of roll products. In a composite manufacturing (21) that follows the composite production (20) directly or indirectly, the incision (14) is produced on the roll products, which may have previously received a print or decoration. Furthermore, if the roll products are equipped Petition 870260051277, dated 05 / 28 / 2026, page 36 / 57 31 / 34 with markings (14) are not used as such for the production of containers, container molds are produced in the manufacture of composites (21). The manufacture of composites (21) is followed by the production of containers (22), in which particularly the bending and joining are carried out by means of the process according to the present invention. Filling with food may also be carried out. Figure 3 shows a container (2) formed during the process according to the present invention, which, for better observation, is shown with a container region (23) designed for a base (12) on top. The container region (23) designed for the base (12) has a series of markings (14). Figure 4a shows the cross-section through a sheet-shaped composite (3) with an incision (14), formed by a recess (24) and a protrusion (25). One end (17) of a bending tool (18) is provided above the recess (24) in order to fit into the recess (24), such that the bend can be conducted around the end (17) along the elevation (14) in order to obtain a bend (8) shown in cross-sectional form in Figure 4b. This bend (8) has two bending surfaces (9) and (10) that encompass an angle μ and are present as a large area part (15) and a small area part (16). At least one layer of thermoplastic (6), (7) or (13) is fused into a region of part (11) of the small area part (16). By pressing the bending surfaces (9), (10) together, reducing the angle μ to 0°, the two bending surfaces (9), (10) are joined together by means of a seal. Figure 5a shows a section along line AA of Figure 3, before bending, from a sheet-shaped composite (3) with markings (14). By means of ends (17) of bending tools (18) that fit into the markings (14) installed centrally on the front faces, the markings (14) are moved in the direction of the two arrows and, as a result, the bends (8) shown in Figure 5b are formed with angles μ. The section shown herein through the outermost part to be bent of the idealized container region to the base (12) of the container (2) has a part region (11) towards the inner side (1) in which at least one layer of thermoplastic (6), (7) or (13) is fused. By pressing the longitudinal sides (26) together, reducing the six angles μ to 0, the two inner surfaces (27) of the longitudinal sides (26) facing the inner side (1) are joined together by means of a seal, in order to create the base (12). Petition 870260051277, dated 05 / 28 / 2026, p. 37 / 57 32 / 34 Figure 6 shows a sheet-shaped composite (3), in which the upper side rests on the outside of the container (2) produced with it and the lower side on the inside.The resulting construction from the outside in is as follows: a layer of KSu thermoplastic (13) (normally PE, optionally with an inorganic salt filler content) with a weight per unit area in the range of 8 to 60 g / m2, followed by a carrier layer (4) of cardboard with a weight per unit area in the range of 120 to 400 g / m2, followed by a layer of KSv thermoplastic (35), normally with a weight per unit area in the range of 5 to 40 g / m2, followed by a barrier layer (5), such as a plastic barrier, with a weight per unit area in the range of 2 to 120 g / m2, followed by an adhesion promoter layer (19) with a weight per unit area in the range of 2 to 30 g / m2, optionally followed by a layer of KSa thermoplastic (6), normally PE, with a weight per unit area in the range of 5 to 40 g / m2, followed by an additional layer of KSw thermoplastic (7), typically a mixture of PE and mPE, with a weight per unit area in the range of 2 to 60 g / m2. In Figure 7, the sheet-shaped composite of Figure 6 is supplemented by an additional layer (19) of adhesion promoter with a weight per unit area in the range of 2 to 30 g / m2 provided between the barrier layer (5), such as a metallic layer with a thickness of 3 to 12 μm, and the carrier layer (4). Figure 8a shows a folded composite region (30) of the sheet-shaped composite (3) between a sonotrode (28) and an anvil (34), both of which have a surface release (29). The folded composite region is formed by further reducing the angle μ in the context of the fold shown in Figure 5b and often has an interstitial space (33) in the regions with few layers. The surface release (29) is configured such that the recesses (33) in the surface release (29) are opposite the regions with multiple layers (31) of greater thickness formed during the fold, in order to allow the most uniform possible distribution of pressure and mechanical vibration on the sonotrode (28). Furthermore, the fixation of the folded composite region (30) to be joined, until the interstitial space (33) disappears, is improved in this way.The sonotrode (28) moves to the anvil (34) in the direction of the arrow and pressure acts on the folded composite region (30) to be joined, which is held between the surface releases (29). In this way, the folded composite region, as shown in Fig. 8b, is pressed and held according to the surface release, such that the mechanical ultrasonic vibration. Petition 870260051277, dated 05 / 28 / 2026, page 38 / 57 33 / 34 generated by the sonotrode (28) is transmitted to the folded composite (30) and sealing takes place, because the molten plastic layers flow at least partially towards each other due to pressure and solidify again by cooling, normally in a dwell time, before the sonotrode (28) has released the folded composite region (30) treated in this way. Figure 9 shows the preferred coating process according to the present invention schematically (a) in front view and (b) in side view. The molten coating film (39) exists in the extruder die slot (38) of the extruder die (37) and is applied to the carrier layer (4) by means of the pressure and cooling rolls (41). The coating film forms the surface (F) comprising polymers P1 (42) and P2 (43), wherein polymer P2 (43) forms the end regions of the surface (F). The end surfaces P2 (43) of the surface (F) are preferably separated from the surface (F) by cutting tools (44), preferably cutting blades. The molten coating film (39) exits the extruder die (37) at the velocity Vout, is accelerated to the velocity Vadv by the cooling and pressure rolls and is thus stretched monoaxially. Table 1 - List of Reference Symbols 1 Inner side 23 Container region 2 Container 24 Recess 3 Sheet-shaped composite 25 Protrusion 4 Carrier layer 26 Longitudinal sides 5 Barrier layer 27 Inner surface 6 KSa thermoplastic layer 28 Sonotrode 7 KSw thermoplastic layer 29 Surface release 8 Fold 30 Folded composite region 9 Fold surface 31 Multilayer region 10 Additional fold surface 32 Intermediate space 11 Part region 33 Recesses 12 Top side of container 34 Anvil Petition 870260051277, dated 05 / 28 / 2026, pp. 39 / 57 34 / 34 13 KSu thermoplastic layer 35 KSv thermoplastic layer 14 Evaluation 36 Opening / perforation 15 Large area part 37 Extruder mold 16 Small area part 38 Extruder mold slot 17 End 39 Coating film (melted) 18 Bending tool 40 Coating film (thermoset) 19 Adhesion promoter 41 Cooling roller, pressure roller 20 Composite production 42 P1 polymer 21 Composite manufacturing 43 P2 polymer 22 Container production 44 Cutting device Petition 870260051277, dated 05 / 28 / 2026, pp. 40 / 57

Claims

1 / 4 Claims 1. SHEET-SHAPED COMPOSITE (3) for food storage, characterized by comprising a layered configuration with the following sequence: o. optionally, a layer of thermoplastic KSu (13); i. a carrier layer (4) made of paper or cardboard; ii. a first layer of thermoplastic KSv (35); iii. an oxygen barrier layer (5); iv. a second layer of thermoplastic KSa (6); and v.at least one additional layer of KSw thermoplastic (7); wherein the Vicat softening temperatures of the first thermoplastic layer KSv (35) and the second thermoplastic layer KSa (6) are each in a range of 90°C to 150°C, wherein the Vicat softening temperature of at least one additional thermoplastic layer KSw (7) is in a range of 60°C to 105°C, wherein the Vicat softening temperature of the thermoplastic layer KSv (35) and the Vicat softening temperature of the thermoplastic layer KSa (6), in each case, is greater than the Vicat softening temperature of the thermoplastic layer KSw (7) by at least 4 K, wherein each Vicat softening temperature is measured in accordance with ISO 306:2004, method VST-A50 (load = 10 N, temperature rise = 50 K / h) using an oil heating bath; where the oxygen barrier layer (5) is chosen from a. a plastic oxygen barrier layer, b. a metallic layer, c.a layer of metallic oxide, or d. a combination of at least two of (a) through (c).

2. SHEET-SHAPED COMPOSITE (3), according to any of the preceding claims, characterized in that the melting temperature of the KSv thermoplastic layer (35) and the melting temperature of the KSa thermoplastic layer (6), in each case, is higher than the melting temperature of the KSw thermoplastic layer (7).

3. SHEET-FORMED COMPOSITE (3), according to any of the preceding claims, characterized in that the modulus of Petition 870260051277, dated 05 / 28 / 2026, page 41 / 57 2 / 4 difference between the Vicat softening temperature of the KSv thermoplastic layer (35) and the Vicat softening temperature of the KSa thermoplastic layer (6) is in the range of 0 to 10 K.

4. SHEET-FORMED COMPOSITE (3), according to any of the preceding claims, characterized in that at least one of the thermoplastic layers KSu (13), KSv (35), KSa (6) or KSw (7) is a plastic mixture of at least two plastics.

5. SHEET-FORMED COMPOSITE (3), according to any of the preceding claims, characterized in that at least one of the plastic layers KSu (13), KSv (35), KSa (6) or KSw (7) comprises at least one polyolefin with a bulk density in the range of 0.925 g / cm3 to 0.980 g / cm3 in the range of 20% by weight to 100% by weight, based, in each case, on the total weight of the plastic layer.

6. SHEET-SHAPED COMPOSITE (3), according to any of the preceding claims, characterized in that the carrier layer (4) has at least one hole (36) which is covered at least with the oxygen barrier layer (5) and at least with one of the thermoplastic layers KSa (6) or KSw (7) in the form of hole cover layers.

7. CONTAINER (2), surrounding an inner side (1), characterized by comprising at least one sheet-shaped composite (3) as defined in any one of claims 1 to 6.

8. PROCESS FOR PRODUCING A CONTAINER (2), around an inner side (1), characterized by comprising the following process steps: a. supplying a sheet-shaped composite (3) comprising a layered configuration with the following sequence: o. optionally, a layer of thermoplastic KSu (13) of a KSum plastic composition; i. a carrier layer (4) made of paper or cardboard; ii. a first layer of thermoplastic KSv (35) of a KSvm plastic composition; iii. an oxygen barrier layer (5); iv. a second layer of thermoplastic KSa (6) of a Ksam plastic composition; and Petition 870260051277, dated 05 / 28 / 2026, page 42 / 57 3 / 4 v.an additional layer of KSw thermoplastic (7) of a KSwm plastic composition; wherein the Vicat softening temperatures of the KSwm plastic composition and the KSam plastic composition are each in a range of 90°C to 150°C, wherein the Vicat softening temperature of the KSwm plastic composition is in a range of 60°C to 105°C, wherein the Vicat softening temperature of the KSwm plastic composition and the Vicat softening temperature of the KSam plastic composition, in each case, is higher than the Vicat softening temperature of the KSwm plastic composition by at least 4 K, wherein each Vicat softening temperature is measured in accordance with ISO 306:2004, method VST-A50 (load = 10 N, temperature rise = 50 K / h) using an oil heating bath; wherein the oxygen barrier layer (5) is chosen from a. a plastic oxygen barrier layer, b. a metallic layer, c. a metallic oxide layer, or d.a combination of at least two of (a) through (c). b. folding of a sheet-shaped composite (3) to form a fold (8) with at least two fold surfaces (9, 10) adjacent to each other; wherein the layer (v) faces the inner side (1) of the container (2); c. joining, in each case, of at least one region of part (11) of the at least two fold surfaces (9, 10) to form a container region (12).

9. PROCESS, according to claim 8, characterized in that at least one of the thermoplastic layers KSu (13), KSv (35), KSa (6) or KSw (7) has a melting temperature below the melting temperature of the oxygen barrier layer (5).

10. PROCESS, according to any of claims 8 and 9, characterized in that the joining according to step (c) is carried out by sealing by means of at least one of the thermoplastic layers KSu (13), KSa (6) or KSw (7). Petition 870260051277, dated 05 / 28 / 2026, pp. 43 / 57 4 / 4 11. PROCESS, according to any of claims 8 to 10, characterized in that at least one of the thermoplastic layers KSu (13), KSa (6) or KSw (7) is heated above the melting temperature directly before step (c).

12. PROCESS, according to any of claims 8 to 11, characterized in that the sheet-shaped composite (3) has at least one incision (14) and the fold (8) is made along the incision (14).

13. CONTAINER (2), characterized in that it is obtained by a process as defined in any one of claims 8 to 12.

14. USE OF A COMPOSITE OR CONTAINER, as defined in any of claims 1 to 6, or according to claim 13, respectively, characterized by being for food storage. Petition 870260051277, dated 05 / 28 / 2026, pp. 44 / 57

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