Flat composite material, packaging sleeve and packaging with stress relief panels.

Abstract

Composite material in flat form, packaging sleeve and packaging with stress relief panels.Flat composite material (1') for producing a package (20) with: outer polymer layer; inner polymer layer; fibrous support layer, between the outer and inner polymer layers, the flat composite material (1') having multiple fold lines, arranged and designed so that the closed package (20) can be produced by folding the flat composite material (1') along the fold lines and connecting the seam surfaces of the flat composite material (1'); sleeve surface (3) having a front surface (14), first and second side surfaces (16A, 16B), first and second rear surfaces (15A, 15B); base surfaces (5) having triangular (5') and quadrangular (5") base surfaces and edge surfaces (6) having triangular (6') and quadrangular (6") edge surfaces, the base surfaces (5) and edge surfaces (6) arranged on opposite sides of the sleeve surface (3).To enable the manufacture of packaging with more complex geometries without compromising the rigidity of the packaging, it is proposed that the surface of the sleeve (3) have at least a stress relief surface (17A, 17B), located between the front surface (14) and two side surfaces (16A, 16B). Packaging sleeve (9') made of composite material and packaging (20) made of composite material or packaging sleeve (9') are also represented and described.

Description

1 / 35 FLAT COMPOSITE MATERIAL, PACKAGING SLEEVE AND PACKAGING WITH STRESS RELIEF PANELS

[001] The present invention relates to a flat composite material for manufacturing packaging comprising: an outer polymer layer, an inner polymer layer, a fibrous support layer, which is disposed between the outer polymer layer and the inner polymer layer, wherein the flat composite material has a plurality of fold lines, which are arranged and designed so that a closed package can be produced by folding the flat composite material along the fold lines and connecting the seam surfaces of the flat composite material, a sleeve surface, wherein the sleeve surface comprises a front surface, a first side surface, a second side surface, a first back surface and a second back surface, base surfaces,wherein the base surfaces comprise triangular base surfaces and quadrangular base surfaces and edge surfaces, wherein the edge surfaces comprise triangular edge surfaces and quadrangular edge surfaces, wherein the base surfaces and edge surfaces are arranged on opposite sides of the sleeve surface.

[002] The invention further relates to a packaging sleeve made of a composite material for manufacturing packaging comprising: a sleeve surface, wherein the sleeve surface comprises a front surface, a first side surface, a second side surface, a first back surface and a second back surface, base surfaces, wherein the base surfaces comprise triangular base surfaces and square base surfaces, edge surfaces, wherein the edge surfaces comprise triangular edge surfaces. Petition 870260038370, dated 04 / 24 / 2026, pp. 141 / 182 2 / 35 and square edge surfaces, two secondary fold lines, which run parallel to each other across the surface of the sleeve, and a longitudinal seam, which connects two edge regions of the composite material to form a circumferential packaging sleeve, which is open in both the base surface region and the edge surface region, wherein the base surfaces and the edge surfaces are arranged on opposite sides of the sleeve surface, and wherein the packaging sleeve is folded along both secondary fold lines, wherein the sleeve surface has at least one stress relief surface, which is arranged between the front surface and one of the two side surfaces.

[003] The invention lastly relates to packaging made of a composite material, wherein the packaging is manufactured from a flat composite material in accordance with the preamble of claim 1, or wherein the packaging is manufactured from a packaging sleeve in accordance with the preamble of claim 13 and wherein the packaging is sealed in the region of the base surfaces and in the region of the edge surfaces. In particular, it can be provided that the packaging is manufactured from a flat composite material in accordance with any of claims 1 to 10 or that the packaging is manufactured from a packaging sleeve in accordance with any of claims 11 to 15, and wherein the packaging is sealed in the region of the base surfaces and in the region of the edge surfaces.

[004] Packaging (in full condition: packaging) can be manufactured in different ways and from an extremely wide range of materials. One widely used possibility for its manufacture consists of manufacturing a blank from a flat composite material by cutting, from which, through folding and additional steps, first a packaging sleeve is formed. Petition 870260038370, dated 24 / 04 / 2026, page 142 / 182 3 / 35 gem and finally a package is created. Alternatively, it is also possible to manufacture a package directly from the composite material, i.e., without the intermediate step of the packaging sleeve. This type of manufacturing has the advantage, among others, that the composite material and the packaging sleeves are very flat and can be stacked, saving space. In this way, the composite material and the packaging sleeves can be manufactured in a different location from the folding and filling of the package. Composite materials are frequently used as material; for example, a flat-shaped composite consisting of a plurality of thin layers of paper, cardboard, plastic and / or metal, in particular aluminum. Such packages are widely used, particularly in the food industry.

[005] A first manufacturing step often consists of manufacturing a blank from a flat composite material by cutting and from the blank producing a circumferential packaging sleeve by folding and welding or gluing a seam. The folding usually occurs along stamped fold lines. The location of the fold lines often corresponds to the location of the edges of the packaging that is to be manufactured from the packaging sleeve. This has the advantage that the flat composite material or the blank produced from it and the packaging sleeve are exclusively folded at points where the finished packaging is folded in any case. A method for manufacturing a package from a packaging sleeve is known, for example, from WO 2015 / 003852 A9 (in particular from Figure 1A to Figure 1E).The packaging described in the present invention has a rectangular cross-sectional profile and is generally cuboid.

[006] However, a disadvantage of rolling up the sleeves of Petition 870260038370, dated 04 / 24 / 2026, pp. 143 / 182 4 / 35 packaging along the edges of the back packaging means that only packaging with angular cross-sectional surfaces can be manufactured. Furthermore, only packaging whose cross-sectional surface is identical in the vertical direction of the packaging can be manufactured. In contrast, alternative designs, for example, rounded portions or freeform shapes instead of edges, are not possible.

[007] To allow for more variable shaping, packaging sleeves have been proposed whose fold edges do not correspond to the packaging edges of the packaging manufactured from the packaging sleeve. This is achieved by the fact that the packaging sleeve is folded along so-called secondary fold lines, which are folded again during the manufacture of the packaging and therefore do not form any packaging edges. This makes it possible to manufacture packaging whose sleeve surface has no edges or, in any case, no straight edges. Such packaging sleeves and packaging manufactured from them are known, for example, from DE 10 2016 003 824 A1 (in particular from Figure 2A to Figure 3G').

[008] Although the use of secondary fold lines allows for somewhat greater flexibility in designing the shape of a package sleeve surface, secondary fold lines do not contribute to increasing the rigidity of the package, but may even reduce the rigidity of the package by folding and folding back the secondary fold line.

[009] In this context, the underlying objective of the invention is to further design and develop the flat composite material described at the beginning and explained in more detail above in such a way that the manufacture of packaging, in particular liquid-tight packaging, with even more complex geometries is possible without Petition 870260038370, dated 04 / 24 / 2026, pages 144 / 182 5 / 35 impair the rigidity of the packaging. Another packaging is known from document DE 10 2016 003826 A1.

[0010] This objective is achieved in the case of a planar composite material according to the preamble of claim 1, wherein the sleeve surface has at least one stress relief surface, which is disposed between the front surface and one of the two side surfaces.

[0011] The flat composite material according to the invention is used to manufacture packaging. The flat composite material can be cut to a defined size, which may be sufficient to manufacture a plurality of packages or is only sufficient to manufacture a single package. A composite material cut to a defined size, in particular the size of an individual package, is therefore also called a blank. The flat composite material has a plurality of overlapping and interconnected layers and thus forms a flat composite. The flat composite material comprises an outer polymer layer, an inner polymer layer, and a fibrous support layer, which is disposed between the outer polymer layer and the inner polymer layer.The inner polymer layer and the outer polymer layer give the composite material liquid-proof properties since they are made of plastic. The fibrous support layer (preferably paper or cardboard), on the other hand, serves primarily to give the composite material improved mechanical properties, in particular improved stiffness. Optionally, a barrier layer can also be provided, which is also arranged between the outer polymer layer and the inner polymer layer (preferably between the fibrous support layer and the inner polymer layer). The barrier layer can, for example, be made of aluminum. Petition 870260038370, dated 04 / 24 / 2026, pp. 145 / 182 6 / 35 and is intended to prevent light and / or oxygen from passing through it. The flat composite material has a sleeve surface comprising a front surface, a first side surface, a second side surface, a first back surface, and a second back surface. The flat composite material also has base surfaces comprising triangular base surfaces and square base surfaces. The flat composite material also has edge surfaces comprising triangular edge surfaces and square edge surfaces. Preferably, the base surfaces and edge surfaces each have two or three square surfaces and six triangular surfaces. The square surfaces serve the purpose of folding the base and edge of the packaging.The triangular surfaces serve to fold the excess composite material into protruding ears which are then placed against the packaging. The base surfaces and edge surfaces are arranged on opposite sides of the sleeve surface. Preferably, in a stand-up package, the edge surfaces are arranged above the sleeve surface and the base surfaces are arranged below the sleeve surface. The flat composite material also has a plurality of fold lines, which are arranged and designed so that a closed package can be manufactured by folding the flat composite material along the fold lines and connecting the seam surfaces of the flat composite material. The fold lines (in particular before the fold, also called crease lines) should then facilitate the folding of the flat composite material; they can be produced by weakening the material.Since the packaging to be manufactured from the composite material must be leak-proof, material weakening is achieved not through perforations, but through displacement. Petition 870260038370, dated 04 / 24 / 2026, pages 146 / 182 7 / 35 material grooves (usually linear), which are engraved into the composite material using pressing tools.

[0012] According to the invention, the sleeve surface is provided to have at least one stress-relieving surface, which is disposed between the front surface and one of the two side surfaces. The stress-relieving surface serves to create the smoothest possible transition between the front surface and the side surface. Preferably, the stress-relieving surface extends the entire height of the sleeve surface, i.e., from the base surfaces to the edge surfaces, and thus separates the front surface from the two side surfaces. The technical effect of the stress-relieving surfaces is that the composite material needs to be folded or bent less than 90° from the edge of a cuboid package, since the transition from the front surface to the two side surfaces occurs through two edges (obstacles).This leads to less stress in the composite material and, in particular, a lower risk of cracked or broken fibers in the fibrous backing layer (paper or cardboard layer) of the composite material. Preferably, the sleeve surface has two stress-relieving surfaces, which are arranged between the front surface and each of the two side surfaces. The stress-relieving surfaces also ensure that a gap or free space between adjacent packages is created between packages arranged close to each other, in contrast to cuboid packages, in the region of the stress-relieving surfaces, through which air can circulate. This has the advantage of reducing the risk of mold formation as a result of moisture.Another advantage of stress-relieving surfaces can be seen in the fact that the surfaces adjacent to the stress-relieving surfaces can be designed to be narrower and therefore more stable, whereby greater adhesion rigidity can be achieved when pouring the full package. Petition 870260038370, dated 04 / 24 / 2026, pp. 147 / 182 8 / 35

[0013] According to another design of the planar composite material, it is provided that at least one stress relief surface in the base surface region joins to a quadrangular base surface and joins to a triangular edge surface in the edge surface region. The triangular surfaces in the base and edge region are typically assigned to the side surfaces of a planar composite material and therefore join the side surfaces of the packaging manufactured from it. The quadrangular surfaces in the base and edge region, on the other hand, are typically assigned to the front and back surfaces of a planar composite material and are therefore adjacent to the front and back of the packaging manufactured from it.By joining the stress-relieving surface in the base region to a different surface in the edge region, the stress-relieving surface in its lower region is assigned to the front of the package, while being assigned to the side of the package in its upper region. The stress-relieving surface, therefore, wraps around a (imaginary) vertical edge of the package. This design of the stress-relieving surfaces has the advantage that the technical effects described above (reduced stress in the composite material, improved air circulation) occur not only on one side of the package, but on both sides of the package. Alternatively or additionally, it can be provided that at least one stress-relieving surface in the base surface region is contiguous to a triangular base surface and contiguous to a quadrangular edge surface in the edge surface region.Ideally, surfaces that are contiguous to each other not only touch at one point, but also join linearly, that is, along a segment.

[0014] According to another configuration of the composite material Petition 870260038370, dated 04 / 24 / 2026, pages 148 / 182 9 / 35 In a flat format, it is provided that a first sleeve fold line, preferably curved at least in sections, is provided between at least one stress-relieving surface and the adjacent front surface. By providing a fold line between the stress-relieving surface and the front surface, a fold edge with a defined course is obtained, which facilitates the manufacture of the packaging. The fold edge also improves the structural properties of the packaging, particularly the rigidity, compared to a curved shape without an edge. The curved course of the sleeve fold line also facilitates the creation of convex or concave surfaces, creating air spaces between adjacent packages that improve air circulation. It can be provided that a first sleeve fold line, preferably curved at least in sections, is provided in each case between both stress-relieving surfaces and the adjacent front surface.It can also be predicted that the first fold line of the sleeve will be continuously curved.

[0015] According to a further design of the flat composite material, a second sleeve fold line, preferably curved at least in sections, is provided between at least one stress-relieving surface and the adjacent side surface. As already explained in relation to the first sleeve fold line, a fold edge with a defined course is also obtained by the second sleeve fold line, which facilitates the manufacture of the packaging. The fold edge also improves the structural properties of the packaging, in particular the rigidity, compared to a curved shape without an edge. The curved course of the sleeve fold line also makes it easier to create convex or concave surfaces, creating air spaces between adjacent packages that improve air circulation. It can be provided that a second sleeve fold line, preferably curved by Petition 870260038370, dated 04 / 24 / 2026, pp. 149 / 182 10 / 35 less in sections, be provided in each case between both stress relief surfaces and the adjacent side surfaces. It can also be provided that the second fold line of the sleeve follows a continuously curved path.

[0016] In the case of another configuration of the flat composite material, it is foreseen that a third sleeve fold line, which is preferably curved at least in sections, is provided between at least one side surface and the adjacent back surface. As already explained in relation to the first and second sleeve fold lines, a fold edge with a defined course is also obtained by the third sleeve fold line, which facilitates the manufacture of the packaging. The fold edge also improves the structural properties of the packaging, in particular the rigidity, compared to a curved shape without an edge. The curved course of the sleeve fold line also facilitates the creation of convex or concave surfaces, creating air spaces between adjacent packages that improve air circulation.It can be foreseen that a third fold line of the sleeve, which is preferably curved at least in sections, is provided in each case between both side surfaces and the adjacent back surfaces. It can also be foreseen that the third fold line of the sleeve is continuously curved.

[0017] Another configuration of the flat composite material is characterized by two secondary fold lines, which run parallel to each other across the surface of the sleeve. Secondary fold lines are understood to be fold lines that, unlike conventional fold lines, do not form packaging edges subsequently, but are arranged between the packaging edges, for example, on the side surfaces. Secondary fold lines are used to generate a packaging sleeve from the composite material, which is preferably folded along Petition 870260038370, dated 04 / 24 / 2026, pp. 150 / 182 11 / 35 two secondary folding lines for stacking and transporting in the most economical way possible.

[0018] According to a further configuration of the planar composite material, at least one quadrangular edge surface with two small edge surface angles less than 90°, with two large edge surface angles greater than 90°, and with a sum of angles greater than 360°, is provided. Angles not equal to 90° result in an edge surface whose shape deviates from a rectangular or square shape. A quadrangular edge surface with two small (<90°) and two large (>90°) edge surface angles can, for example, be obtained by means of a trapezoid, a parallelogram, or a rhombus. A sum of angles deviating from 360° can, for example, be achieved by one or more sides of the quadrangular edge surface not being straight but curved (as in the case of an arc quadrilateral or arc polygon).A sum of angles greater than 360° can be achieved by at least one side of the quadrangular edge surface being curved outwards. The angles of the base surface, on the other hand, are preferably 90°, resulting in a rectangular, in particular square, base shape. The edge surface design according to the invention has a plurality of advantages. In addition to a visually more appealing shape, the technical effect is achieved in such a way that the packages to be manufactured from the flat composite material can be gripped more easily with one hand, since one edge of the edge surface (preferably the front edge) is shorter than the other edges (in particular the back edge), so that the package is narrower at the front. The design according to the invention also leads to the technical effect that the contact surface between packages arranged close to each other... Petition 870260038370, dated 04 / 24 / 2026, pp. 151 / 182 12 / 35 other (for example, during transport or on the sales shelf) is smaller than in the case of cuboid packaging, whose side surfaces touch almost completely. In other words, there is a gap or free space between packages placed side by side through which air can circulate. This has the advantage of reducing the risk of mold formation as a result of humidity. Since the sum of the angles is greater than 360°, there is also more space for a dispensing element. Preferably, the quadrangular edge surface has a sum of angles of at least 370°, in particular at least 380°, preferably at least 390°. Sums of angles in the range between 390° and 410° have proven to be advantageous.

[0019] According to a further development of the flat composite material, it is anticipated that at least one of the square edge surfaces will be approximately trapezoidal. By designing the edge surface of the composite material to be approximately trapezoidal, the edge of the packaging manufactured from it also becomes trapezoidal. The trapezoidal shape has the advantage that one of the two parallel sides or edges (preferably the front edge) is shorter than the opposite side or edge (preferably the back edge), in contrast to a rhombus where opposite sides have the same length. This facilitates handling larger volume packages from the front with one hand. A trapezoid is generally understood as a quadrilateral in which two sides are parallel to each other.Here, trapezoidal quadrilaterals should also be understood as quadrilaterals with curved sides, provided that when the four corners are connected by (fictitious) straight lines, two of these straight lines are parallel to each other.

[0020] According to a planar composite material configuration, the square edge surface is expected to Petition 870260038370, dated 04 / 24 / 2026, pages 152 / 182 13 / 35 has a curved leading edge that joins the front surface. Preferably, the leading edge of the edge surface is curved, when viewed from the edge surface, towards the front surface. In this way, the edge surface can be enlarged, which facilitates, for example, the attachment of distribution elements with a larger diameter. A curved leading edge also influences the shape of the front surface of the composite material and therefore also the shape of the front face of a package manufactured from the composite material. In particular, a leading edge curved towards the front surface can obtain an outwardly arched (convex) front side (front panel) of the package. In addition to an attractive appearance, this also has the previously described technical advantage of better air circulation between adjacent packages, which reduces the risk of mold formation.

[0021] According to a further design of the planar composite material, the fibrous backing layer of the composite material is expected to have a principal fiber direction, which extends approximately at right angles to a longitudinal edge of the composite material extending from the base surfaces to the edge surfaces. Paper and cardboard are materials made of cellulose fibers. While the fibers are uniformly distributed in all directions in traditional (manual) paper production, a directional alignment of the fibers can be achieved in mechanical paper production. Since paper has different mechanical properties in the fiber direction from transverse to fiber direction (anisotropy), fiber orientation can be used to obtain the ideal material properties for the respective application. The principal fiber direction should be approximately perpendicular to the two longitudinal edges of the composite material.Since the longitudinal edges run from the base region to the edge region (that is, in the case of... Petition 870260038370, dated 04 / 24 / 2026, pp. 153 / 182 14 / 35 packaging in the vertical direction), this means that the direction of the main fiber in the packaging runs in the circumferential direction of the packaging, that is, around the surface of the sleeve. This has the advantage that the cardboard fibers are broken in the case of creases on the longitudinal edges of the packaging (which run transversely to the fiber direction). During subsequent folding and forming, this leads to packaging with well-defined packaging edges and therefore improved packaging stability. In particular, in the case of compressive stress on the packaging (for example, in the case of multi-layer stacking on a pallet), there is a significant increase in stability compared to packaging with fibers aligned in the longitudinal direction, since the packaging only yields under higher compressive stresses.

[0022] The objective described at the beginning is also achieved through a packaging sleeve made of a composite material for packaging manufacturing.The packaging sleeve comprises a sleeve surface, wherein the sleeve surface comprises a front surface, a first side surface, a second side surface, a first back surface and a second back surface, base surfaces, wherein the base surfaces comprise triangular base surfaces and square base surfaces, edge surfaces, wherein the edge surfaces comprise triangular edge surfaces and square edge surfaces, two secondary fold lines, which extend parallel to each other through the sleeve surface and a longitudinal seam, which connects two edge regions of the composite material to form a circumferential packaging sleeve, which is open both in the region of the base surfaces and in the region of the edge surfaces, wherein the base surfaces and the edge surfaces are arranged on opposite sides of the sleeve surface, and wherein the... Petition 870260038370, dated 04 / 24 / 2026, pp. 154 / 182 15 / 35 The packaging sleeve is folded along both secondary fold lines. Regarding the properties of the packaging sleeve that are already present in the flat composite material, reference is made to the corresponding explanations. The packaging sleeve has a longitudinal seam that connects two edge regions of the composite material to form a circumferential packaging sleeve. The longitudinal seam allows a continuous packaging sleeve, closed in a circumferential direction, to be manufactured from a flat, in most cases rectangular, raw piece of composite material. The longitudinal seam can, for example, be produced by adhesion and / or welding. Due to the longitudinal seam, such packaging sleeves are also referred to as longitudinally sealed packaging sleeves.The packaging sleeve is folded along both secondary fold lines, resulting in a front side and a back side, as well as an inside side and an outside side.

[0023] According to the invention, the packaging sleeve is characterized by the sleeve surface having at least one stress-relieving surface, which is disposed between the front surface and one of the two side surfaces. By providing at least one stress-relieving surface, the smoothest possible transition between the front surface and the side surface is achieved, as a result of which the composite material needs to be folded or bent with less force, since the transition from the front surface to the two side surfaces occurs through two less strongly folded edges (blunter). This leads to less stress in the composite material and, in particular, to a lower risk of cracked or broken fibers in the paper or cardboard layer of the composite material. The other properties and advantages have already been explained in connection with claim 1 and can be transferred from the composite material in paper format. Petition 870260038370, dated 24 / 04 / 2026, pp. 155 / 182 16 / 35 no for the packaging sleeve in a corresponding manner.

[0024] According to one configuration of the packaging sleeve, the packaging sleeve is provided to be manufactured from a flat-shaped composite material according to any one of claims 1 to 10. As the packaging sleeve is manufactured from one of the flat-shaped composite materials described above, many properties and advantages of the flat-shaped composite material also apply to the packaging sleeve, so reference is made to the corresponding embodiments.

[0025] According to a further design of the packaging sleeve, the composite material is intended to have at least one layer of paper or cardboard that is covered at the edge of the longitudinal seam extending into the packaging sleeve. The paper or cardboard layer is preferably the support layer. The covering of the paper or cardboard layer is intended to prevent any contact between the contents of the package and this layer. This serves, on the one hand, to prevent liquid from leaking through the non-liquid-tight paper or cardboard layer and, on the other hand, to protect the contents of the package against contamination through the paper or cardboard layer (e.g., pulp fibers).

[0026] With regard to this configuration, it is further proposed that the paper or cardboard layer be covered by a sealing strip and / or by turning the composite material over in the region of the longitudinal seam. One possibility for achieving said coverage involves attaching a separate sealing strip. The sealing strip can, for example, be made of the same material as the innermost layer of the composite material and can be glued or welded to this layer. Another possibility for coverage involves turning or folding the composite material over in the region of the longitudinal seam. In this way, not all the layers Petition 870260038370, dated 04 / 24 / 2026, pages 156 / 182 17 / 35 of the time, but only the innermost layer of the composite material now appears at the edge of the longitudinal seam extending inside the packaging sleeve. However, the innermost layer must, in any case, be made of a material that is suitable for contact with the contents of the packaging.

[0027] In another packaging sleeve design, the composite material is removed in the region of the longitudinal seam. A removed composite material is understood to mean a composite material that has fewer layers in the removed region than in other regions. Particularly in the region where a plurality of material layers overlap, removal brings the advantage of a less pronounced increase in thickness. The use of removed composite material is therefore particularly advantageous if the composite material is turned or folded; for example, in the region of the longitudinal seam.

[0028] The objective described at the beginning is also achieved by packaging made of a composite material, wherein the packaging is manufactured from a flat composite material according to the preamble of claim 1, or wherein the packaging is manufactured from a packaging sleeve according to the preamble of claim 11, and wherein the packaging is sealed in the region of the base surfaces and in the region of the edge surfaces. The packaging is characterized in that the surface of the sleeve has at least one stress-relieving surface, which is disposed between the front surface and one of the two side surfaces. By providing at least one stress-relieving surface, a transition between the front surface and the side surface is achieved that is as smooth as possible, whereby the composite material is stressed to a lesser degree.The other associated properties and advantages have already been explained and can be transferred from the composite material and the packaging sleeve to the packaging in a corresponding manner. The packaging can be manufactured... Petition 870260038370, dated 04 / 24 / 2026, pages 157 / 182 18 / 35 each directly from a flat composite material or can be manufactured from a packaging sleeve that has been previously manufactured from a flat composite material.

[0029] According to the invention, the packaging sleeve is characterized by the sleeve surface having at least one stress-relieving surface, which is disposed between the front surface and one of the two side surfaces. By providing at least one stress-relieving surface, the smoothest possible transition between the front surface and the side surface is achieved, as a result of which the composite material needs to be folded or bent with less force, since the transition from the front surface to the two side surfaces occurs through two less strongly folded edges (blunter). This leads to less stress in the composite material and, in particular, to a lower risk of cracked or broken fibers in the paper or cardboard layer of the composite material. The other properties and advantages have already been explained in connection with claim 1 and can be transferred from the flat composite material to the packaging sleeve in a corresponding manner.

[0030] According to one packaging configuration, it is provided that at least one stress-relieving surface in the base surface region joins a quadrangular base surface and a triangular edge surface in the edge surface region. The associated properties and advantages (reduced stress in the composite material, improved air circulation) have already been explained and can be transferred from the flat composite material and the packaging sleeve to the packaging in a corresponding manner.

[0031] According to another packaging design, it is provided that a first fold line of the sleeve, which is preferably curved at least in sections, is provided between at Petition 870260038370, dated 04 / 24 / 2026, pages 158 / 182 19 / 35 minus a stress relief surface and the adjacent front surface. The associated properties and advantages (simplified manufacturing, increased stiffness, improved air circulation) have already been explained and can be transferred from the flat composite material and the packaging sleeve to the packaging in a corresponding manner.

[0032] According to another packaging design, it is foreseen that between at least one stress-relieving surface and the adjacent side surface there is a second folding line of the sleeve, which is preferably curved at least in sections. The associated properties and advantages (simplified manufacturing, increased rigidity, improved air circulation) have also been explained and can be transferred from the flat composite material and the packaging sleeve to the corresponding packaging.

[0033] According to another packaging design, a third folding line of the sleeve is foreseen, which is preferably curved at least in sections, between at least one side surface and the adjacent rear surface. The associated properties and advantages (simplified manufacturing, increased rigidity, improved air circulation) have also been explained and can be transferred from the flat composite material and the packaging sleeve to the corresponding packaging.

[0034] According to a packaging configuration, the packaging is expected to have a flap seam in the edge region that is turned towards the front surface. This design allows, for example, better moisture drainage from the edge surface in the case of a forward-sloping oblique edge, since no open pocket forms at the top in which moisture can accumulate. Petition 870260038370, dated 04 / 24 / 2026, pp. 159 / 182 20 / 35 could accumulate. This design also allows for more space for a sealed interior dispenser.

[0035] According to a further design of the packaging, the packaging is expected to have an edge that is approximately trapezoidal. The trapezoidal shape of the edge has the advantage that one of the two parallel sides or edges (preferably the front edge of the edge) is shorter than the opposite side or edge (preferably the back edge of the edge), unlike a rhombus where opposite sides have the same length. This makes it easier to grip larger volume packages from the front with one hand.

[0036] An additional packaging configuration provides that the packaging has an oblique edge. In particular, it may be provided that the edge of the packaging slopes forward, i.e., is lower in the front region of the packaging than in the rear region of the packaging. Due to the oblique slope of the edge, it may be possible for a dispensing element arranged in the edge region to hinder the stacking of packages less than in packages with a flat edge. This is due to the fact that the dispensing element does not necessarily form the highest point of the packaging in packages with an oblique edge, unlike packages with a flat edge. Furthermore, better moisture drainage from the edge surface can be achieved.

[0037] According to a further design of the packaging, the packaging is foreseen to be convex in the region of the front surface and / or concave in the region of the rear surfaces. In particular, it can be foreseen that the packaging is convex in the region of the front surface in the upper region, in particular in the upper half, and / or concave in the region of the rear surfaces in the upper region, in particular in the upper half. Through the combination of a convex front side and a concave rear side, the packaging can be disposed Petition 870260038370, dated 04 / 24 / 2026, pages 160 / 182 21 / 35 tiles placed in front of or behind each other in a way that saves space despite their visually complex design.

[0038] The invention will be explained in more detail below with reference to a drawing that simply represents a preferred exemplary embodiment, in which:

[0039] Figure 1A: shows a known prior art flat composite material for folding a packaging sleeve in a top view,

[0040] Figure 1B: shows a known packaging sleeve of the prior art, formed from the flat composite material shown in Figure 1A, in a front view,

[0041] Figure 1C: shows a rear view of the packaging sleeve of Figure 1B,

[0042] Figure 1D: shows the packaging sleeve of Figure 1B and Figure 1C in its unfolded state,

[0043] Figure 1E: shows the packaging sleeve of Figure 1D with sealed base,

[0044] Figure 1F: a package, which is formed from the packaging sleeve shown in Figure 1B, after welding,

[0045] Figure 1G: shows the packaging of Figure 1F with tabs applied,

[0046] Figure 2A: shows a flat composite material according to the invention for folding a packaging sleeve in a top view,

[0047] Figure 2B: shows a second region of the planar composite material from Figure 2A in enlarged view,

[0048] Figure 3A: shows a packaging sleeve according to the invention, which is formed from the flat composite material shown in Figure 2A, in a front view,

[0049] Figure 3B: shows the packaging sleeve of Figure 3A Petition 870260038370, dated 04 / 24 / 2026, pages 161 / 182 22 / 35 in a rear view,

[0050] Figure 4A: shows a package according to the invention, which is formed from the packaging sleeve shown in Figure 3, in perspective view,

[0051] Figure 4B: shows the packaging of Figure 4A in a front view,

[0052] Figure 4C: shows the packaging of Figure 4A in a rear view, and

[0053] Figure 4D: shows the packaging of Figure 4A in side view.

[0054] Figure 1A shows a known prior art planar composite material 1, from which a packaging sleeve can be formed, in a top view. The planar composite material 1 may comprise a plurality of layers of different materials; for example, paper, cardboard, plastic or metal, in particular aluminum. The composite material 1 has a plurality of fold lines 2 intended to facilitate the folding of the composite material 1 and to divide the composite material 1 into a plurality of surfaces. The composite material 1 may be divided into a sleeve surface 3, a sealing surface 4, base surfaces 5 and edge surfaces 6. A packaging sleeve may be formed from the composite material 1 by the composite material 1 being folded in such a way that the sealing surface 4 is connected, in particular welded, to the opposite edge region of the sleeve surface 3.With the exception of the sealing surface 4, the sleeve surface 3 extends across the entire width of the composite material 1. The composite material 1 has two secondary fold lines 7 in the region of the sleeve surface 3. The two secondary fold lines 7 are straight and run parallel to each other. In addition, the secondary fold lines 7 pass through a contact point SB of three triangular surfaces. Petition 870260038370, dated 04 / 24 / 2026, pp. 162 / 182 23 / 35 adjacent sides 8 of the base surface 5 and through a contact point SG of three adjacent triangular surfaces 8 of the edge surfaces 6. The sleeve surface 3 is divided by secondary fold lines 7 into an inner partial region 3A and two outer partial regions 3B. The inner partial region 3A lies between two secondary fold lines 7 and the outer partial regions 3B lie close to and outside the two secondary fold lines 7.

[0055] Base surfaces 5 form four corner points E5 and edge surfaces 6 form four corner points E6. Corner points E5, E6 are corner points of the packaging to be manufactured from composite material 1. Each corner point E5 of a base surface 5 is assigned a corresponding corner point E6 of an edge surface 6 which is in each case the corner point E6 that is positioned above this corner point E5 when the packaging is standing. A corner axis EA passes through two corner points E5, E6 assigned to each other which, in a conventional cuboid packaging, would correspond to a vertical packaging edge. Four corner axes EA are therefore present in the composite material 1 shown in Figure 1A, in the same way as in the packaging sleeve manufactured from it and in the packaging manufactured from it (for clarity, only one corner axis EA is drawn in each case).Any fold lines are provided between the corner points E5 of the base surfaces 5 and the corner points E6 of the edge surfaces 6 assigned to them, that is, along the corner axes EA.

[0056] FIG. 1B shows a packaging sleeve 9 known from the prior art, which is formed from the flat composite material 1 shown in Figure 1A, in a front view. The regions of the packaging sleeve 9 already described in relation to Figure 1A are provided with corresponding reference numbers in Figure Petition 870260038370, dated 04 / 24 / 2026, pp. 163 / 182 24 / 35 1B. The packaging sleeve 9 was created from composite material 1 in two steps: first, composite material 1 is folded along the two secondary fold lines 7. The two partial regions 3B (left) and 3B (right) of the sleeve surface 3 are then joined, specifically welded, in the sealing surface region 4, resulting in a longitudinal seam 10 (hidden in Figure 1B). The packaging sleeve 9 therefore has a circumferential structure, which is closed in a circumferential direction, with an opening in the base surface region 5 and an opening in the edge surface region 6. The inner partial region 3A of the sleeve surface 3 is visible in the front view, both sides of which are delimited by the secondary fold lines 7. The remaining partial regions 3B of the sleeve surface 3 are on the back of the packaging sleeve 9 and are therefore hidden in Figure 1B.

[0057] Figure 1C is a rear view of the packaging sleeve of Figure 1B. The packaging sleeve regions 9 already described in connection with Figure 1A and Figure 1B are provided with corresponding reference numbers in Figure 1C. Both outer partial regions 3B of the sleeve surface 3 are visible in the rear view. They are connected by the longitudinal seam 10 and are bounded on both sides by the secondary fold lines 7. The inner partial region 3A of the sleeve surface 3 is on the front of the packaging sleeve 9 and is therefore hidden in Figure 1C.

[0058] Figure 1D shows the packaging sleeve 9 of Figure 1B and Figure 1C in its unfolded state. The regions of the packaging sleeve 9 already described in connection with Figure 1A to Figure 1C are provided with corresponding reference numbers in Figure 1D. The unfolded state is obtained by folding the packaging sleeve 9 backward along the secondary fold lines 7 that extend across the surface of the sleeve 3. The sleeve is folded backward in Petition 870260038370, dated 04 / 24 / 2026, pp. 164 / 182 25 / 35 approximately 180°. The result of this backward folding along the secondary fold lines 7 is that the two partial regions 3A, 3B of the sleeve surface 3 contiguous to the secondary fold line 7 are no longer one on top of the other, but are arranged in the same plane. The packaging sleeve 9 is therefore only in its flat state (Figure 1B, Figure 1C) along the secondary fold lines 7; in the unfolded state (Figure 1D), on the other hand, the packaging sleeve 9 (as the packaging to be manufactured from it) is no longer folded along the secondary fold lines 7. Hence the designation secondary fold lines 7.

[0059] Figure 1E shows the packaging sleeve 9 of Figure 1D with a sealed base. The regions of the packaging sleeve 9 already described in connection with Figure 1A to Figure 1D are provided with corresponding reference numbers in Figure 1E. The pre-folded state denotes (as in Figure 1D) a state in which the two fold lines 2 in the region of the edge surfaces 6 have been pre-folded. The base surfaces 5, on the other hand, are already completely folded and welded so that the packaging sleeve 9 has a sealed base.

[0060] Figure 1F shows a package 11, which is formed from the packaging sleeve 9 shown in Figure 1B, after welding. The regions of the package 11 already described in connection with Figure 1A to Figure 1E are provided with corresponding reference numbers in Figure 1F. The package 11 is shown after welding, that is, in the full and sealed state. After sealing, a fin seam 12 is created in the region of the base surfaces 5 and in the region of the edge surfaces 6. While the fin seam 12 has already been applied to the package 11 in the region of the base surfaces 5, the fin seam 12 still projects from the package 11 in the region of the edge surfaces 6. Partial regions of the edge surfaces 6 are folded outwards. Petition 870260038370, dated 04 / 24 / 2026, pages 165 / 182 26 / 35 during pre-folding (see Figure 1E) and form protruding regions of excess material which are also referred to as ears 13 and in a later manufacturing step are applied against the packaging 11; for example, by an adhesion process. In Figure 1F, the ears 13 still protrude from the packaging 11 and are applied in a later manufacturing step; for example, by an adhesion process.

[0061] Figure 1G shows the packaging 11 of Figure 1F with applied tabs. The regions of the packaging 11 already described in connection with Figure 1A to Figure 1F are provided with corresponding reference numbers in Figure 1G. The upper tabs 13 arranged in the edge surface region 6 are folded down and applied flat to the surface of the sleeve 3 of the packaging 11. Preferably, the upper tabs 13 are adhered or welded to the surface of the sleeve 3.

[0062] Figure 2A shows a flat composite material 1' according to the invention for folding a packaging sleeve in a top view. The regions of the composite material 1' already described in connection with Figure 1A to Figure 1G are provided with corresponding reference numbers in Figure 2A. The base surfaces 5 of the composite material 1' can be divided into triangular base surfaces 5' and square base surfaces 5''. The triangular base surfaces 5' form ears 13 (see Figure 1F), which are folded inwards or outwards and applied to the packaging; on the other hand, the square base surfaces 5 determine the shape of the base. In the composite material 1' shown in Figure 2A, the corners of the square base surfaces 5 are approximately at right angles (aB = 90°), so that a package made from this composite material 1' also has an approximately rectangular base, in particular approximately Petition 870260038370, dated 04 / 24 / 2026, pp. 166 / 182 27 / 35 square. Correspondingly, the edge surfaces 6 of the composite material 1' can be divided into triangular edge surfaces 6' and square edge surfaces 6''. The triangular edge surfaces 6' form ears 13 (see Figure 1F), which are folded inwards or outwards and applied to the packaging; on the other hand, the square edge surfaces 6 determine the edge shape. In the composite material 1' shown in Figure 2A, the corners of the square edge surfaces 6 are not at right angles, but rather slightly less (αβ1 < 90°) or slightly greater (αG2 > 90°) than 90°, resulting in an approximately trapezoidal shape. A package manufactured from this composite material 1', therefore, also has an approximately trapezoidal edge.Preferably, the small edge surface angles αβ1 are in the range between 80° and 90°, while the large edge surface angles aG2 are in the range between 90° and 100°. The side of the quadrangular edge surface 6, which joins the front surface 14, is also referred to as the front edge V. The front edge V is preferably curved in the direction of the front surface 14.

[0063] The surface of sleeve 3 of composite material 1' shown in Figure 2A has a plurality of fold lines that divide the surface of sleeve 3 into a plurality of surfaces. The surface of sleeve 3 comprises a front surface 14, a first back surface 15A and a second back surface 15B, a first side surface 16A and a second side surface 16B, a first stress relief surface 17A and a second stress relief surface 17B. The front surface 14 joins the quadrangular base surface 5 in the base region and joins the trapezoidal, quadrangular edge surface 6 in the edge region. The front surface 14 joins laterally to the first stress relief surface 17A and the second stress relief surface 17B. The two surfaces of Petition 870260038370, dated 04 / 24 / 2026, pages 167 / 182 28 / 35 stress relief surfaces 17A, 17B also join to the square base surface 5 in the base region (i.e., like the front surface 14); however, the two stress relief surfaces 17A, 17B each join to one of the triangular edge surfaces 6' in the edge region. The two side surfaces 16A, 16B join to one of the triangular base surfaces 5' in the base region and join to one of the triangular edge surfaces 6' in the edge region. The two side surfaces 16A, 16B each join laterally to one of the two stress-relieving surfaces 17A, 17B on their inner sides and each join to one of the two rear surfaces 15A, 15B on their outer sides (the first side surface 16A joins the first rear surface 15A and the first stress-relieving surface 17A and the second side surface 16B joins the second rear surface 15B and the second stress-relieving surface 17B).The two rear surfaces 15A, 15B join the square base surface 5 in the base region and join the square edge surface 6 in the edge region. The two rear surfaces 15A, 15B each join laterally to one of the two side surfaces 16A, 16B on their inner sides (the first rear surface 15A joins the first side surface 16A and the second rear surface 15B joins the second side surface 16B).

[0064] In the flat composite material 1' shown in Figure 2A, the sleeve surface 3 has a plurality of sleeve fold lines 18', 18, 18'. The first sleeve fold lines 18' laterally delimit the front surface 14 and form the boundaries between the front surface 14 and the two stress relief surfaces 17A, 17B. Preferably, the first two sleeve fold lines 18' are curved at least in sections. The second two sleeve fold lines 18' form the boundaries between the two stress relief surfaces 17A, 17B and the two side surfaces 16A, 16B. Petition 870260038370, dated 04 / 24 / 2026, pp. 168 / 182 29 / 35 Preferably, the second two sleeve fold lines 18 are also curved at least in sections. The third two sleeve fold lines 18' form the boundaries between the two stress relief surfaces 17A, 17B and the two back surfaces 15A, 15B. Preferably, the third two sleeve fold lines 18' are also curved at least in sections. The composite material 1' also has a paper or cardboard layer, whose main fiber direction F runs transversely (i.e., at right angles to two longitudinal edges L that run from the base surfaces 5 through the sleeve surface 3 to the edge surfaces 6) through surfaces 14, 15A, 15B, 16A, 16B, 17A, 17B forming the sleeve surface and then runs in the circumferential direction of the packaging in a package made of composite material 1'. Furthermore, the composite material 1' has a weakening zone 19 that can be used to define the position of a dispensing element.The weakening zone 19 can be designed as a lined hole or as a hole drilled completely through the composite material 1'.

[0065] Figure 2B shows a first region of the composite material 1' from Figure 2A in enlarged view. The regions of the composite material 1' already described in connection with Figure 1A up to Figure 2A are provided with corresponding reference numbers in Figure 2B. The first region of the composite material 1' represented in Figure 2B refers to the region of the edge surfaces 6, in particular to the region of the edge surface angles αβ1, αβ2. As previously described, the corners of the quadrangular edge surfaces 6 are not at right angles, but slightly less (αβ1 < 90°) or slightly greater (αβ1 > 90°) than 90°. For the rear edge surface angles αβ1 (assigned to the rear side of the packaging), the deviation from a right angle is due to the fact that one of the two lines of Petition 870260038370, dated 04 / 24 / 2026, pp. 169 / 182 30 / 35 bra adjacent to angle αβι does not run perpendicularly to the edge of the composite material 1', but is inclined at an angle βι relative to a vertical Si (αβι = 90° - βι). For the front edge surface angles αβ2 (assigned to the front side of the packaging), the deviation from a right angle has two reasons: first, one of the two fold lines adjacent to angle αβ2 does not run at a right angle to the edge of the composite material 1', but is inclined at an angle β2 relative to a vertical S2. Secondly, the front edge V, also adjacent to angle αβ2, does not follow a straight line, but is curved towards the front surface 14, wherein the edge V (or a tangent, which touches the front edge V in the corner region or angle αβ2) is inclined at an angle γ with respect to a horizontal W (which runs parallel to the upper edge of the composite material 1') (αβ2 = 90° + β2 + γ). Angle βι corresponds to angle β2; both angles are preferably in the range between 2° and 6°.The two surface angles of the rear edge α G1 can therefore, for example, have an angle of approximately 86°. The angle γ is preferably in the range between 15° and 25°. The two surface angles of the front edge αβ2 can therefore, for example, have an angle of approximately 113°. From the described design, in particular the curved front edge V, it appears that the sum of the angles of the square edge surface 6 is greater than 360° (2*αβ1 + 2*αβ2 > 360°).

[0066] Figure 2C shows a second region of the planar composite material 1' from Figure 2A in enlarged view. The regions of the composite material 1' already described in connection with Figure 1A through Figure 2B are provided with corresponding reference numbers in Figure 2C. The second region of the composite material 1' shown in Figure 2C refers to the region of the third sleeve fold line 18', which separates the side surfaces 16A, 16B from the rear surfaces 15A, 15B. The third sleeve fold line 18' is positioned between Petition 870260038370, dated 04 / 24 / 2026, pages 170 / 182 31 / 35 The side surfaces 16A, 16B and the adjacent back surfaces 15A, 15B have four sections I-IV: the first section I joins the base surfaces 5 and runs straight. The second section II joins the first section I and runs curved (towards the back surfaces 15A, 15B). As a result of the curvature, there is a maximum distance dn between the third fold line of the sleeve 18' and a vertical S, which can be in the range between 0.5 mm and 2.5 mm. The third section III joins the second section II and runs curved (towards the side surfaces 16A, 16B). As a result of the curvature, there is a maximum distance dIII between the third fold line of the sleeve 18' and the vertical S, which can be in the range between 0.5 mm and 2.5 mm. The second section II and the third section III therefore have opposite curvatures or directions of curvature. The fourth section IV joins the third section III and the edge surfaces 6 and continues in a straight line.The third fold line of sleeve 18', therefore, runs straight in sections (in section I adjacent to base surfaces 5 and in section IV adjacent to edge surfaces 6) and curved in sections (in the two central sections II, III).

[0067] Figure 3A shows a packaging sleeve 9' according to the invention, which is formed from the flat composite material 1' shown in Figure 2A, in a front view. The regions of the packaging sleeve 9' already described in connection with Figure 1A to Figure 2C are provided with corresponding reference numbers in Figure 3A. The packaging sleeve 9' was created from the composite material 1' in two steps: firstly, the composite material 1' is folded along the two secondary fold lines 7. The first back surface 15A and the second back surface 15B are then joined, in particular welded, in the region of the sealing surface 4, so that a longitudinal seam 10 results (hidden in Figure 3A). The packaging sleeve 9' therefore has a circumferential structure, which is closed in a circumferential direction, with a Petition 870260038370, dated 04 / 24 / 2026, pages 171 / 182 32 / 35 opening in the region of the base surfaces 5 and with an opening in the region of the edge surfaces 6. The front view shows the front surface 14, the two stress relief surfaces 17A, 17B and (partially) the two side surfaces 16A, 16B. The rear surfaces 15A, 15B are on the back of the packing sleeve 9' and are therefore hidden in Figure 3A.

[0068] Figure 3B shows the packing sleeve 9' of Figure 3A in a rear view. The regions of the packing sleeve 9' already described in connection with Figure 1A up to Figure 3A are provided with corresponding reference numbers in Figure 3A. In the rear view, the two rear surfaces 15A, 15B are visible, which are connected to each other by the longitudinal seam 10 and which are bounded on both sides by the third fold lines of the sleeve 18'. In addition, the two side surfaces 16A, 16B are (partially) discernible. The front surface 14 and the two stress relief surfaces 17A, 17B are on the front side of the packing sleeve 9' and are therefore hidden in Figure 3B.

[0069] Figure 4A shows a package 20 according to the invention, which is formed by the package 9' shown in Figure 3, in perspective view. The regions of the package 20 already described in connection with Figure 1A to Figure 3B are provided with corresponding reference numbers in Figure 4A. In Figure 4A, it is particularly recognizable that the stress relief surface 17A (as well as the unshown stress relief surface 17B) should be assigned to the front side of the package 20 in the base region, while the stress relief surface 17A should be assigned to the left side of the package 20 in the edge region (the unshown stress relief surface 17B should be assigned to the right side of the package 20 in the edge region). The stress relief surfaces 17A, 17B then wrap around a (fictitious) edge of the package. Petition 870260038370, dated 04 / 24 / 2026, pages 172 / 182 33 / 35 gem 20 from the front of the package 20 towards one side of the package. The stress relief surfaces 17A, 17B then form a transition from the front side of the package 20 (where they join the front surface 14) to the two sides of the package 20 (where they join the two side surfaces 16A, 16B). In Figure 4A, it is also noticeable that the package 20 has an oblique edge (oblique border) on which a screw cap 21 is disposed. The trapezoidal edge design is also discernible, which is obtained where the square edge surfaces 6 have angles deviating from 90° (in Figure 4A, the two small edge surface angles αβ1 adjacent to the back surfaces 15A, 15B have an angle of < 90° and the two large edge surface angles aG2 adjacent to the front surface 14 have an angle of > 90°).Furthermore, it is clearly discernible in Figure 4A that both the fold lines of the first sleeve 18' and the second sleeve fold lines 18', as well as the third fold lines of the sleeve 18', are curved.

[0070] Figure 4B shows the packaging 20 of Figure 4A in a front view. The regions of packaging 20 already described in connection with Figure 1A up to Figure 4A are provided with corresponding reference numbers in Figure 4B. The trapezoidal design of the edge is particularly easily discernible in Figure 4B. Furthermore, the curved course of the first fold lines of sleeve 18' and the second fold lines of sleeve 18'' is clearly visible.

[0071] Figure 4C shows the packaging 20 of Figure 4A in a rear view. The regions of the packaging 20 already described in connection with Figure 1A to Figure 4B are provided with corresponding reference numbers in Figure 4C. The composition of the rear side of the packaging 20 of the two rear surfaces 15A, 15B is particularly easily discernible in Figure 4C. Furthermore, the curved course of the fold lines of the third sleeve 18' is clearly visible. Petition 870260038370, dated 04 / 24 / 2026, pages 173 / 182 34 / 35

[0072] Finally, Figure 4D shows packaging 20 from Figure 4A in a side view. The regions of the packaging 20 already described in connection with Figure 1A to Figure 4C are provided with corresponding reference numbers in Figure 4D. The composition of the left side of the packaging 20 of the first two side surfaces 16A and a part of the first stress relief surface 17A is particularly easily discernible in Figure 4D. The secondary bend line (folded backwards) 7 also passes through the first side surface 16A. The same applies to the opposite right side of the packaging 20 not shown in Figure 4D, since the two sides are drawn identically (mirror-symmetrically) to each other. Furthermore, it is clearly discernible in Figure 4D that the packaging 20 in the upper region of its front part (right in Figure 4D) is convexly arched outwards and in the upper region of its rear part (left in Figure 4D) is concavely arched inwards. List of reference numbers: 1, 1': Flat composite material 2: Fold line 3, 3A, 3B: Sleeve surface 4: Sealing surface 5.5'.5: Base surface 6, 6', 6: Edge surface 7: Secondary fold line 8: Triangular surface 9.9': Packaging sleeve 10: Longitudinal seam 11: Packaging 12: Fin stitching 13: Ear 14: Front surface Petition 870260038370, dated 04 / 24 / 2026, pages 174 / 182 35 / 35 15A, 15B: First and second rear surfaces 16A, 16B: First and second side surfaces 17A, 17B: First and second stress relief surfaces 18', 18, 18': Sleeve fold line 19: Weakening zone 20: Packaging 21: Screw cap αB: Base surface angle (from fold lines in the base region) αβ1, αG2: Edge surface angle (from fold lines in the edge region) β1, β2: γ: Inclination angle (relative to vertical Si, S2) Inclination angle (relative to horizontal W) dii, dm: Distance (between the third sleeve fold line 18' and vertical S) EA: Corner axis E5: Corner point (of base surface 5) E6: Corner point (of edge surface 6) F: L: Main fiber direction Longitudinal edge S, Si,S2: Vertical SB: Contact point (of the triangular surfaces 8 of the base surface 5) SG: Contact point (of the triangular surfaces 8 of the edge surface 6) V: Front edge (of the quadrangular edge surface 6) W: Horizontal I, II, III, IV: Sections (of the third fold line of the sleeve 18'), Petition 870260038370, dated 04 / 24 / 2026, pages 175 / 182

Claims

1 / 6 CLAIMS 1. Flat composite material (1') for making a package (20), comprising: an outer polymer layer, an inner polymer layer, a fibrous support layer, which is disposed between the outer polymer layer and the inner polymer layer, wherein the flat composite material (1') has fold lines, which are arranged and designed so that a closed package (20) can be made by folding the flat composite material (1') along the fold lines and connecting the seam surfaces of the flat composite material (1'), a sleeve surface (3), wherein the sleeve surface (3) comprises a front surface (14), a first side surface (16A), a second side surface (16B), a first back surface (15A) and a second back surface (15B), base surfaces (5),wherein the base surfaces (5) comprise triangular base surfaces (5') and quadrangular base surfaces (5), and edge surfaces (6), wherein the edge surfaces (6) comprise triangular edge surfaces (6') and quadrangular edge surfaces (6), wherein the base surfaces (5) and the edge surfaces (6) are disposed on opposite sides of the sleeve surface (3), wherein the sleeve surface (3) has at least one stress relief surface (17A, 17B), which is disposed between the front surface (14) and one of the two side surfaces (16A, 16B), wherein a first sleeve fold line (18') is provided between at least one stress relief surface (17A, 17B) Petition 870260038370, dated 24 / 04 / 2026, page. 176 / 182 2 / 6 and the adjacent front surface (14), and wherein a second sleeve fold line (18) is provided between at least one stress relief surface (17A, 17B) and the adjacent side surface (16A, 16B),characterized in that at least one stress relief surface (17A, 17B) joins a square base surface (5) in the region of the base surfaces (5) and joins a triangular edge surface (6') in the region of the edge surfaces (6).

2. Flat composite material (1'), according to claim 1, characterized in that the first sleeve fold line (18') is curved at least in sections.

3. Flat composite material (1'), according to claim 1 or 2, characterized in that the second sleeve fold line (18) is curved at least in sections.

4. Flat composite material (1'), according to any one of claims 1 to 3, characterized in that a third sleeve fold line (18), which is preferably curved at least in sections, is provided between at least one side surface (16A, 16B) and the adjacent back surface (15A, 15B).

5. Flat composite material (1'), according to any one of claims 1 to 4, characterized in that the two secondary folding lines (7) run parallel to each other across the surface of the sleeve (3).

6. Flat composite material (1'), according to any one of claims 1 to 5, characterized in that at least one quadrangular edge surface (6) has two small edge surface angles (αβ1) that are less than 90°, two large edge surface angles (αG2) that are greater than 90°, and a sum of angles that is greater than 360°. Petition 870260038370, dated 24 / 04 / 2026, p. 177 / 182 3 / 6 7. Flat composite material (1'), according to any one of claims 1 to 6, characterized in that at least one of the square edge surfaces (6) is approximately trapezoidal.

8. Flat composite material (1'), according to any one of claims 1 to 7, characterized in that the square edge surface (6) has a front edge (V) that joins the front surface (14) and that is curved.

9. Flat composite material (1'), according to any one of claims 1 to 8, characterized in that the fibrous support layer of the composite material (1') has a principal fiber direction (F), which extends approximately at right angles to a longitudinal edge (L) of the composite material (1') extending from the base surfaces (5) to the edge surfaces (6).

10. Packaging sleeve (9') made of flat composite material (1') for making a package (20) as defined in claim 1, comprising: a sleeve surface (3), wherein the sleeve surface (3) comprises a front surface (14), a first side surface (16A), a second side surface (16B), a first back surface (15A) and a second back surface (15B), base surfaces (5), wherein the base surfaces (5) comprise triangular base surfaces (5') and square base surfaces (5), edge surfaces (6), wherein the edge surfaces (6) comprise triangular edge surfaces (6') and square edge surfaces (6), two secondary fold lines (7), which extend parallel to each other through the sleeve surface (3), and Petition 870260038370, dated 24 / 04 / 2026, page.178 / 182 4 / 6 a longitudinal seam (10), which connects two edge regions of the composite material (1') to form a circumferential packing sleeve (9'), which is open in both the base surface region (5) and the edge surface region (6), wherein the base surfaces (5) and the edge surfaces (6) are disposed on opposite sides of the sleeve surface (3), wherein the packing sleeve (9') is folded along both secondary fold lines (7), and wherein the sleeve surface (3) has at least one stress relief surface (17A, 17B), which is disposed between the front surface (14) and one of the two side surfaces (16A, 16B), characterized in that the packing sleeve (9') is manufactured from the flat-shaped composite material (1').

11. Packaging sleeve (9'), according to claim 10, characterized in that the composite material has at least one layer of paper or cardboard that is covered at the edge of the longitudinal seam (10) extending inside the packaging sleeve (9').

12. Packaging sleeve (9'), according to claim 11, characterized in that the paper or cardboard layer is covered by a sealing strip and / or turning the composite material in the region of the longitudinal seam (10).

13. Packaging sleeve (9'), according to any one of claims 10 to 12, characterized in that the composite material is removed in the region of the longitudinal seam (10).

14. Packaging (20) made of composite material, wherein the packaging (20) is made of a composite material in a flat shape (1'), as defined in claim 1, or wherein the packaging (20) is made of a packaging sleeve (9'), as defined in claim 10, Petition 870260038370, dated 24 / 04 / 2026, page.179 / 182 5 / 6 wherein the packaging (20) is sealed in the region of the base surfaces (5) and in the region of the edge surfaces (6), and the sleeve surface (3) has at least one stress relief surface (17A, 17B), which is disposed between the front surface (14) and one of the two side surfaces (16A, 16B), wherein a first sleeve fold line (18') is provided between at least one stress relief surface (17A, 17B) and the adjacent front surface (14), and wherein a second sleeve fold line (18') is provided between at least one stress relief surface (17A, 17B) and the adjacent side surface (16A, 16B), characterized in that at least one stress relief surface (17A, 17B) joins a quadrangular base surface (5) in the region of the base surfaces (5) and joins a triangular gable surface. (6') in the gable surface region (6).

15. Packaging (20), according to claim 14, characterized in that the first sleeve fold line (18') is curved at least in sections.

16. Packaging (20), according to claim 14 or 15, characterized in that the second sleeve fold line (18) is curved at least in sections.

17. Packaging (20), according to any one of claims 14 to 16, characterized in that a third sleeve fold line (18), which is preferably curved at least in sections, is provided between at least one side surface (16A, 16B) and the adjacent back surface (15A, 15B).

18. Packaging (20), according to any one of claims 14 to 17, characterized in that the packaging (20) has a flap seam (12) in the edge region, which is turned towards the front surface (14). Petition 870260038370, dated 24 / 04 / 2026, pp. 180 / 182 6 / 6 19. Packaging (20), according to any one of claims 14 to 18, characterized in that the packaging (20) has an edge that is approximately trapezoidal.

20. Packaging (20), according to any one of claims 14 to 19, characterized in that the packaging (20) has an oblique edge.

21. Packaging (20), according to any one of claims 14 to 20, characterized in that the packaging (20) is convex in the region of the front surface (14) and / or is concave in the region of the rear surfaces (15A, 15B). Petition 870260038370, dated 24 / 04 / 2026, pp. 181 / 182

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