Flat composite, packaging envelope and packaging with gable

Abstract

The invention relates to a flat composite material (1') for producing a package (20), comprising a polymer outer layer, a polymer inner layer, a fiber-containing carrier layer arranged between the polymer outer layer and the polymer inner layer, wherein the flat composite material (1') has a plurality of folding lines which are arranged and designed in such a way that a closed package (20) can be produced by folding the flat composite material (1') along the folding lines and by connecting the seam faces of the flat composite material (1'); a sleeve face (3) comprising a front face (14), a first side face (16A), a second side face (16B), a first back face (15A) and a second back face (15B); a bottom face (5), wherein the bottom face (5) comprises a triangular bottom face (5') and a quadrangular bottom face (5"); a gable face (6), wherein the gable face (6) comprises a triangular gable face (6') and a quadrangular gable face (6"), wherein the bottom face (5) and the gable face (6) are arranged on opposite sides of the sleeve face (3). In order to produce a package with a more complex geometry in the gable and bottom region, at least one quadrangular gable face (6") is provided with two small gable face angles (a G1 ) of less than 90°, two large gable face angles (a G2 ) of more than 90°, the angle sum being greater than 360°. The invention also relates to a package sleeve (9') made of the composite material and to a composite material package (20) made of the composite material (1') or of the package sleeve (9').

Description

Technical Field

[0001] This invention relates to a flat composite material for producing packaging, comprising: a polymer outer layer, a polymer inner layer, and a fiber-containing carrier layer disposed between the polymer outer layer and the polymer inner layer, wherein the flat composite material has multiple fold lines, the arrangement and design of which enable the production of closed packaging by folding the flat composite material along the fold lines and by connecting the seam surfaces of the flat composite material, the flat composite material further comprising an outer cover, the outer cover comprising a front, a first side, a second side, a first back, and a second back, the flat composite material further comprising a bottom surface, wherein the bottom surface comprises a triangular bottom surface and a quadrilateral bottom surface, the flat composite material further comprising a gable surface, wherein the gable surface comprises a triangular gable surface and a quadrilateral gable surface, wherein the bottom surface and the gable surface are arranged on opposite sides of the outer cover.

[0002] The present invention also relates to a packaging cover made of composite material for manufacturing packaging, comprising: a cover surface, wherein the cover surface includes a front, a first side, a second side, a first back, and a second back; a bottom surface, wherein the bottom surface includes a triangular bottom and a quadrilateral bottom; a gable surface, wherein the gable surface includes a triangular gable and a quadrilateral gable; two hidden fold lines extending parallel to each other through the cover surface; and a longitudinal seam connecting two edge regions of the composite material to form a surrounding packaging cover, the packaging cover being open in both the bottom and gable regions, wherein the bottom and gable surfaces are arranged on opposite sides of the cover surface, and wherein the packaging cover is folded along the two hidden fold lines.

[0003] Finally, the present invention relates to a package made of a composite material, wherein the package is manufactured from a flat composite material provided in embodiments of the present invention, or the package is manufactured from a packaging jacket provided in embodiments of the present invention, and the package is enclosed in a bottom region and a gable region. In particular, the package may be configured to be manufactured from a flat composite material provided in embodiments of the present invention, or the package is manufactured from a packaging jacket provided in embodiments of the present invention, and wherein the package is enclosed in a bottom region and a gable region. Background Technology

[0004] Packaging materials (in a filled state: "packaging") can be manufactured in various ways and from a wide variety of materials. One widely used manufacturing possibility involves creating a "cut piece" from a flat composite material by cutting it into shape, then forming a packaging jacket from this cut piece through folding and further steps, ultimately forming the package. Alternatively, the package can also be manufactured directly from the composite material, without the intermediate step of a packaging jacket. The advantage of this method is particularly that the composite material and packaging jacket are very flat, allowing for space-saving stacking. Thus, the composite material and packaging jacket can be manufactured at a different location than the folding and filling of the package. Composite materials are commonly used, for example, flat composite materials composed of multiple thin layers of paper, cardboard, plastics, and / or metals, especially aluminum. This type of packaging is particularly widespread in the food industry.

[0005] The first manufacturing step typically involves creating a "cut piece" from a flat composite material by cutting it, and producing a surrounding packaging jacket from the cut piece by folding and welding or gluing seams. Folding is usually done along pressed fold lines. Therefore, the location of the fold lines generally corresponds to the location of the edges of the package to be manufactured from the packaging jacket. This has the advantage that the flat composite material or the cut piece made from it and the packaging jacket are always folded only at the locations where they must be folded in the final package. For example, a method for manufacturing a package from a packaging jacket is known from WO 2015 / 003852 A9 (especially Figures 1A to 1E). The package illustrated therein has a rectangular cross-section and is generally cubic in shape.

[0006] However, a drawback of folding the packaging jacket along the subsequent packaging edges is that only packages with angular cross-sections can be manufactured. Furthermore, only packages with the same cross-section in the vertical direction can be manufactured. Conversely, alternative designs, such as rounded or freeform designs instead of edges, are not possible.

[0007] To achieve more variable forming, packaging jackets have been proposed whose folded edges do not correspond to the packaging edges of the package manufactured from such a jacket. This is achieved by folding the packaging jacket along a so-called “dark fold line,” which is folded back again during the packaging manufacturing process and therefore does not form any edges on the package. This makes it possible to manufacture packages whose jacket surfaces have no edges or at least no straight edges. For example, from DE 10 2016 003 824 A1 (especially... Figure 2A The packaging jacket and the packaging made from it are known in Figure 3G'.

[0008] While the use of "concealed fold lines" allows for slightly greater flexibility in the design of the outer shape of the packaging, the concealed fold lines do not affect the design of the bottom and gable of the packaging. Summary of the Invention

[0009] In this context, the object of the present invention is to design and extend the flat composite material described at the beginning and in more detail above, so that packaging with more complex geometries, especially liquid-tight packaging, can be produced in the gable and bottom regions.

[0010] In the case of the flat composite material provided in the embodiments of the present invention, this objective is achieved by at least one quadrilateral gable face having two small gable face angles less than 90° and two large gable face angles greater than 90°, and the sum of the angles is greater than 360°.

[0011] The flat composite material according to the invention is used for manufacturing packaging. The flat composite material can be cut to defined dimensions, sufficient to manufacture multiple packages or only a single package. Therefore, the composite material cut to defined dimensions, especially to the dimensions of a single package, is also referred to as a "cut piece". The flat composite material has multiple overlapping and interconnected layers, thus forming the flat composite material. The flat composite material includes a polymer outer layer, a polymer inner layer, and a fiber-containing carrier layer disposed between the polymer outer layer and the polymer inner layer. The polymer inner layer and polymer outer layer impart liquid-sealing properties to the composite material because they are made of plastic. In contrast, the fiber-containing carrier layer (preferably: paper or cardboard) primarily serves to impart better mechanical properties to the composite material, especially better rigidity. Optionally, a barrier layer may also be provided, which is also disposed between the polymer outer layer and the polymer inner layer (preferably between the fiber-containing carrier layer and the polymer inner layer). The barrier layer may be made of, for example, aluminum and is designed to prevent the passage of light and / or oxygen. The flat composite material has an outer casing, which includes a front, a first side, a second side, a first back, and a second back. The flat composite material also has a bottom surface comprising a triangular bottom surface and a quadrilateral bottom surface. The flat composite material also has a gable surface comprising a triangular gable surface and a quadrilateral gable surface. Preferably, the bottom surface and the gable surface each have two or three quadrilateral faces and six triangular faces, respectively. The quadrilateral faces are used for folding the bottom and gable portion of the package. The triangular faces are used to fold excess composite material into protruding "ears" which are then abutted against the package. The bottom surface and the gable surface are arranged on opposite sides of the outer cover. Preferably, in a vertical package, the gable surface is arranged above the outer cover, and the bottom surface is arranged below the outer cover. The flat composite material also has multiple fold lines, the arrangement and design of which allow for the production of a closed package by folding the flat composite material along the fold lines and by connecting the seam surfaces of the flat composite material. The fold lines (especially before folding, also referred to as "crease lines") should therefore facilitate the folding of the flat composite material; they can be created through material weakening. Since the packaging to be made from composite materials is liquid-tight, perforations are not used as material weakening sections. Instead, (usually linear) material extrusion sections are used, which are pressed into the composite material by a pressing tool.

[0012] According to the invention, at least one quadrilateral gable is provided, having two small gable angles less than 90° and two large gable angles greater than 90°, with a total angle greater than 360°. The shape of the gable deviates from a rectangle or square by angles not equal to 90°. The quadrilateral gable with two small (<90°) and two large (>90°) gable angles can be achieved, for example, by a trapezoid, parallelogram, or rhombus. For example, a total angle deviation of 360° can be achieved by one or more sides of the quadrilateral gable extending curvedly rather than straight (e.g., in the case of an arched quadrilateral or arched polygon). A total angle greater than 360° can be achieved by bending at least one side of the quadrilateral gable outwards. In contrast, the base angle is preferably 90°, resulting in a rectangular, especially square, base shape. The design of the gable according to the invention has several advantages. Besides a more visually appealing shape, this design achieves the technical effect of making the packaging, made from a flat composite material, easier to grip with one hand because one edge of the gable (preferably the front edge) is shorter than the other edges (especially the rear edge), thus making the packaging narrower from the front. The design according to the invention also produces the technical effect that the contact area between adjacent packages (e.g., during transport or on a sales shelf) is smaller than that of a cuboid package with almost complete side contact. In other words, there is a gap or free space between adjacent packages through which air can circulate. This has the advantage of reducing the risk of mold growth due to moisture. A greater than 360° sum of angles also allows for more space for the tipping element. Preferably, the quadrilateral gable has a sum of at least 370°, especially at least 380°, and preferably at least 390°. An angle sum in the range of 390° to 410° has proven advantageous.

[0013] According to an extension of the flat composite material, at least one of the quadrilateral gable faces is approximately trapezoidal. By designing the gable face of the composite material to be approximately trapezoidal, the gable portion of the resulting package also becomes trapezoidal. The advantage of a trapezoid is that one of the two parallel sides or edges (preferably the front edge of the gable portion) is shorter than the opposite side or edge (preferably the rear edge of the gable portion), which is the opposite of a rhombus, where opposite sides are of equal length. This allows for easy handling of larger packages from the front, even with one hand. A trapezoid is generally understood as a quadrilateral with two parallel sides. Here, a trapezoidal quadrilateral should also be understood as a quadrilateral with curved sides, provided that when the four corners are connected by (imaginary) straight lines, two of those lines are parallel.

[0014] According to one design of a flat composite material, the quadrilateral gable has a curved front edge adjacent to the front. Preferably, when viewed from the gable, the front edge of the gable is curved in the forward direction. In this way, the gable can be enlarged, which, for example, facilitates the attachment of a tipping element with a larger diameter. The curved front edge of the gable also affects the shape of the front of the composite material, and therefore also affects the shape of the front side of the packaging made of the composite material. In particular, the front edge curved in the forward direction can achieve an outwardly arched (protruding) front side ("front panel") of the packaging. In addition to an attractive appearance, this also has the aforementioned technical advantage of improved air circulation between adjacent packages, thereby reducing the risk of mold growth.

[0015] Another design option for the flat composite material features two hidden fold lines that extend parallel to each other across the outer casing. Hidden fold lines are understood as fold lines distinct from conventional fold lines, which do not subsequently form the edges of the packaging but are arranged between the edges of the packaging, for example, in the sides. The hidden fold lines are used to create the outer casing of the packaging from the composite material, which is preferably folded flat along the two hidden fold lines for stacking and transport in a space-saving manner.

[0016] According to another design scheme for the flat composite material, the outer casing has at least one stress-relieving surface arranged between the front and one of the two sides. The stress-relieving surface is used to create a transition as smooth as possible between the front and the sides. Preferably, the stress-relieving surface extends over the entire height of the outer casing, i.e., from the bottom to the gable, thus separating the front from the two sides. The technical effect of the stress-relieving surface is that the composite material requires less folding or bending compared to the 90° edges of a cuboid package, because the transition from the front to the two sides is achieved through two less intensely bent (“blunt”) edges. This results in less stress on the composite material, and in particular, a lower risk of fiber breakage or fracture in the fiber-containing carrier layer (paper or cardboard layer) of the composite material. The outer casing preferably has two stress-relieving surfaces, each arranged between the front and one of the two sides. Unlike cuboid packaging, the stress-relieving surface also creates gaps or free spaces between adjacent packages in the area of ​​the stress-relieving surface, through which air can circulate. This has the advantage of reducing the risk of mold growth due to moisture. Another advantage of stress-relief surfaces is that the surfaces adjacent to them can be designed to be narrower, thus more stable, which in turn provides increased grip stiffness when pouring filled packaging.

[0017] According to another design scheme of the flat composite material, at least one stress-relieving surface is abutted by a quadrilateral base in the bottom region and by a triangular gable in the gable region. The triangular faces in the bottom and gable regions are typically assigned to the sides of the flat composite material, thus abutting the sides of the packaging made from it. Conversely, the quadrilateral faces in the bottom and gable regions are typically assigned to the front and back of the flat composite material, thus abutting the front and rear sides of the packaging made from it. By having the stress-relieving surface abut a different face in the bottom region than in the gable region, the stress-relieving surface is assigned to the front of the packaging in its lower region and to the sides of the packaging in its upper region. Therefore, the stress-relieving surface “rotates” around the (imaginary) vertical edge of the packaging. The advantage of this design of the stress-relieving surface is that the technical effects described above (reduced stress on the composite material, improved air circulation) occur not only on one side of the packaging but also on both sides. Alternatively or additionally, at least one stress-relieving surface can be configured to abut a triangular base in the bottom region and a quadrilateral gable in the gable region. Preferably, the adjacent surfaces not only contact each other at a point, but also in a linear manner, that is, along a line segment.

[0018] According to another design scheme of the flat composite material, a first outer fold line is provided between at least one stress-relief surface and its adjacent front surface, the first outer fold line preferably being at least segmentally curved. By providing a fold line between the stress-relief surface and the front surface, a folded edge with a defined extension is achieved, which is beneficial for packaging manufacturing. Compared to a curved shape without edges, the folded edge also improves the structural properties of the packaging, especially its stiffness. The curved extension of the outer fold line also makes it easier to form convex or concave surfaces, thereby creating air gaps between adjacent packages, which improves air circulation. It can be configured that the first outer fold line is provided between each of the two stress-relief surfaces and its adjacent front surface, preferably being at least segmentally curved. Alternatively, the first outer fold line can be configured to extend in a continuously curved manner.

[0019] According to another design scheme of the flat composite material, a second outer fold line is provided between at least one stress-relief surface and its adjacent side, the second outer fold line preferably being at least segmentally curved. As already explained in conjunction with the first outer fold line, the second outer fold line also achieves folded edges with defined extensions, which is beneficial for packaging manufacturing. Compared to curved shapes without edges, folded edges also improve the structural properties of the packaging, especially its stiffness. The curved extension of the outer fold line also makes it easier to form convex or concave surfaces, thereby creating air gaps between adjacent packages, which improves air circulation. It can be configured that second outer fold lines are provided between each of the two stress-relief surfaces and their adjacent side, preferably being at least segmentally curved. It can also be configured that the second outer fold line extends in a continuously curved manner.

[0020] In another design of the flat composite material, a third outer fold line is specified between at least one side and its adjacent back side, the third outer fold line preferably being at least segmentally curved. As already explained in conjunction with the first and second outer fold lines, the third outer fold line also achieves a folded edge with a defined extension, which is beneficial for packaging manufacturing. Compared to a curved shape without edges, the folded edge also improves the structural properties of the packaging, especially its stiffness. The curved extension of the outer fold line also makes it easier to form convex or concave surfaces, thereby creating air gaps between adjacent packages, which improves air circulation. It can be configured that the third outer fold line is provided between each of the two sides and its adjacent back side, preferably at least segmentally curved. It can also be configured that the third outer fold line extends in a continuously curved manner.

[0021] This design also incorporates a third outer fold line with multiple segments, at least one of which is curved and at least one of which is straight. By including both curved and straight segments in the third outer fold line, packaging manufacturing is simplified.

[0022] According to another design, the third outer fold line has multiple segments, among which the segments adjacent to the bottom and the gable are straight. Using straight segments adjacent to the bottom and the gable is particularly advantageous because it allows for the use of simpler tools to manufacture the bottom and gable sections of the package.

[0023] According to another design, the third outer fold line has multiple segments, with at least two segments having opposite bending directions. Specifically, one segment can be bent in the rear direction and another in the side direction. In this way, a package with both convex and concave surfaces can be obtained. Preferably, the side-bending segment of the third outer fold line is arranged above the rear-bending segment. This results in a wide, concave rear side in the upper region, particularly in the upper half of the package. Since the package preferably has a narrow, convex front side in its upper region, particularly in the upper half, multiple packages can be placed in front of or behind each other in a space-saving manner, thus making good use of space. Furthermore, the opposite bending directions allow for compensation of the reduced filling volume due to one bending direction by the other, ensuring that the package height remains constant for a given package volume.

[0024] According to another design scheme for flat composite materials, the fiber-containing carrier layer of the composite material has a main fiber direction that is approximately perpendicular to the longitudinal edges of the composite material extending from the bottom surface to the gable surface. Paper and paperboard are materials made from pulp fibers. Although fibers are uniformly distributed in all directions in conventional (manual) paper production, oriented fiber alignment can be achieved in mechanical paper production. Since the mechanical properties of paper in the fiber direction differ from those in the transverse direction (anisotropy), the fiber orientation can be used to obtain optimal material properties for the corresponding application. The main fiber direction should extend approximately at right angles to the two longitudinal edges of the composite material. Since the longitudinal edges extend from the bottom region to the gable region (i.e., in the vertical direction in the case of packaging), this means that in the case of packaging, the main fiber direction extends circumferentially around the outer surface of the packaging. The advantage of this is that the paperboard fibers are broken when creases appear at the longitudinal edges of the packaging (extending transversely to the fiber direction). In subsequent folding and forming processes, this results in sharp and distinct packaging edges, thereby improving the stability of the packaging. Especially when the packaging is subjected to compressive stress (e.g., when multiple layers are stacked on a pallet), the stability is significantly improved compared to packaging with fibers oriented longitudinally, because the packaging only collapses under higher compressive stress.

[0025] The aforementioned objective is also achieved through a packaging cover made of composite material for manufacturing packaging. This packaging cover includes an outer face comprising a front, a first side, a second side, a first back, and a second back; a bottom face comprising a triangular bottom and a quadrilateral bottom; a gable face comprising a triangular gable and a quadrilateral gable; two parallel, dark fold lines extending through the outer face; and a longitudinal seam connecting two edge regions of the composite material to form a circumferential packaging cover. The packaging cover has openings in both the bottom and gable face regions, with the bottom and gable faces arranged on opposite sides of the outer face, and the packaging cover folded along the two dark fold lines. For those characteristics of the packaging cover already present in flat composite materials, see the corresponding description. The packaging cover has a longitudinal seam connecting two edge regions of the composite material to form a circumferential packaging cover. A circumferentially closed, circumferential packaging cover can be manufactured from a flat, in most cases rectangular cut piece of composite material via the longitudinal seam. Longitudinal seams can be created, for example, by gluing and / or welding. Because of these longitudinal seams, this type of packaging cover is also known as a longitudinally seam-sealed packaging cover. The packaging cover is folded along two dark fold lines, thus forming the front and back sides, as well as the inside and outside sides.

[0026] According to the invention, the packaging outer casing is characterized by at least one quadrilateral gable face having two small gable face angles less than 90° and two large gable face angles greater than 90°, and the sum of their angles is greater than 360°. This design of the gable portion achieves a gable face shape that deviates from a rectangle or square. Related characteristics and advantages have been explained in conjunction with embodiments of the invention and can be transferred from a flat composite material to the packaging outer casing in a corresponding manner.

[0027] According to one design of the packaging cover, the packaging cover is made of a flat composite material provided in the embodiments of the present invention. Since the packaging cover is made of one of the aforementioned flat composite materials, many of the properties and advantages of flat composite materials are also applicable to the packaging cover; please refer to the corresponding embodiments.

[0028] According to another design of the packaging jacket, the composite material has at least one layer made of paper or paperboard that covers the edges of the longitudinal seams extending inside the packaging jacket. The layer made of paper or paperboard is preferably a carrier layer. The covering of the paper or paperboard layer serves to prevent any contact between the packaging contents and this layer. This serves two purposes: firstly, to prevent liquid leakage through the non-liquid-tight paper or paperboard layer, and secondly, to protect the packaging contents from contamination through the paper or paperboard layer (e.g., pulp fibers).

[0029] Regarding this design, it is further proposed that layers made of paper or cardboard are covered by a sealing strip and / or by folding the composite material over in the longitudinal seam area. One possibility for achieving this coverage is to fix a separate sealing strip. The sealing strip could, for example, be made of the same material as the innermost layer of the composite material and could be adhered to or welded to that layer. Another possibility for coverage involves folding or turning the composite material over in the longitudinal seam area. In this way, not all layers, but only the innermost layer of the composite material, now appear on the edge of the longitudinal seam extending inside the packaging outer layer. However, the innermost layer must in any case be made of a material suitable for contact with the contents of the packaging.

[0030] In another design for the packaging jacket, the composite material is thinned in the longitudinal seam areas. "Thinned" composite material is understood as a composite material with fewer layers in the thinned areas than in other areas. Thinning offers the advantage of a less noticeable increase in thickness, especially in areas where multiple material layers overlap. Therefore, using thinned composite material is particularly advantageous if the composite material is being flipped or folded, for example, in the longitudinal seam areas.

[0031] The aforementioned objective is also achieved through packaging made of composite materials, wherein the packaging is manufactured from the flat composite material provided in the embodiments of the invention, or wherein the packaging is manufactured from a packaging jacket provided in the embodiments of the invention, and wherein the packaging is enclosed in the bottom and gable regions. The packaging is characterized by at least one quadrilateral gable having two small gable angles less than 90° and two large gable angles greater than 90°, and the sum of their angles being greater than 360°. This design of the gable portion achieves a gable shape that deviates from a rectangle or square. The relevant characteristics and advantages have been described above and can be transferred from the composite material and packaging jacket to the packaging accordingly. The packaging can be manufactured directly from the flat composite material, or it can be manufactured from a packaging jacket previously made from the flat composite material.

[0032] According to one packaging design, the package features fin-like seams in the gable section that fold inwards. For example, in the case of a forward-sloping gable, this design allows for better drainage from the gable surface because it eliminates the need for an upward-opening "pocket" to collect moisture. This design also provides more space for an internally sealed pourer.

[0033] According to another design configuration, the packaging has a nearly trapezoidal gable. The advantage of the trapezoidal shape of the gable is that one of the two parallel sides or edges (preferably the front edge of the gable) is shorter than the opposite side or edge (preferably the rear edge of the gable), unlike a rhombus where opposite sides are of equal length. This allows the larger package to be easily grasped from the front with one hand.

[0034] Another packaging design option involves a sloping gable. Specifically, the gable can be designed to slope forward, meaning the front area of ​​the packaging is lower than the rear area. This sloping extension of the gable reduces the damage to the stacking of the packaging caused by the tipping elements positioned within the gable area compared to packaging with a flat gable. This is because the tipping elements in a sloping gable do not necessarily form the highest point of the packaging, unlike packaging with a flat gable. Furthermore, it allows for better drainage of moisture from the gable surface.

[0035] According to another design configuration, the packaging is formed by protrusion in the front area and / or recess in the back area. In particular, the packaging can be configured such that the upper area, especially the upper half, is protruding in the front area and / or recessed in the upper area, especially the upper half, in the back area. Through this combination of a protruding front and a recessed rear, the packaging can be arranged sequentially in a space-saving manner, despite the complexity of the overall design.

[0036] Finally, according to another packaging design, the packaging has a stress-relieving surface that is segmentally in a plane with the front and segmentally in a plane with the sides. As previously explained in conjunction with the flat composite material, this design results in the stress-relieving surface rotating from one side of the packaging (e.g., the front) around a (fictitious) edge towards the other side. Therefore, the stress-relieving surface is used to create the smoothest possible transition between the front and sides. Preferably, the stress-relieving surface extends over the entire height of the outer casing, i.e., from the bottom to the gable, thus separating the front from the two sides. The technical effect of the stress-relieving surface is that the composite material requires less folding or bending compared to the 90° edges of a cuboid packaging, because the transition from the front to the two sides is achieved through two less intensely bent (“blunt”) edges. This results in less stress on the composite material, and in particular, a lower risk of fiber breakage or fracture in the paper or cardboard layers of the composite material. Attached Figure Description

[0037] The invention will now be explained in more detail with reference to the accompanying drawings, which show only preferred embodiments, in which:

[0038] Figure 1A shows a top view of a flat composite material known in the prior art for folding packaging jackets.

[0039] Figure 1B shows a front view of a packaging jacket formed from the flat composite material shown in Figure 1A, as known in the prior art.

[0040] Figure 1C shows a rear view of the packaging jacket in Figure 1B.

[0041] Figure 1D shows the packaging jacket in the unfolded state as seen in Figures 1B and 1C.

[0042] Figure 1E shows the packaging jacket from Figure 1D with a closed bottom.

[0043] Figure 1F shows the welded package formed from the packaging jacket shown in Figure 1B.

[0044] Figure 1G shows the packaging from Figure 1F with the ear flaps attached.

[0045] Figure 2A A top view of a flat composite material for folding packaging jackets according to the present invention is shown.

[0046] Figure 2B It shows Figure 2A An enlarged view of the first region of the flat composite material.

[0047] Figure 2C It shows Figure 2A An enlarged view of the second region of the flat composite material.

[0048] Figure 3A A front view of the packaging jacket according to the invention is shown, which is made of Figure 2A The flat composite material shown is formed.

[0049] Figure 3B shows Figure 3A Rear view of the packaging jacket in the middle.

[0050] Figure 4A A perspective view of the packaging according to the invention is shown, which is composed of Figure 3A and Figure 3B The packaging jacket shown is formed,

[0051] Figure 4B shows Figure 4A Front view of the packaging in the middle.

[0052] Figure 4C It shows Figure 4A The rear view of the packaging, and

[0053] Figure 4D It shows Figure 4A Side view of the packaging. Detailed Implementation

[0054] Figure 1A shows a top view of a flat composite material 1 known from the prior art, from which a packaging outer cover can be formed. The flat composite material 1 may comprise multiple layers of different materials, such as paper, cardboard, plastic, or metal, especially aluminum. The composite material 1 has multiple fold lines 2, which are designed to simplify the folding of the composite material 1 and divide the composite material 1 into multiple faces. The composite material 1 can be divided into an outer face 3, a sealing face 4, a bottom face 5, and a gable face 6. The packaging outer cover can be formed from the composite material 1 by folding the composite material 1 such that the sealing face 4 and the opposite edge areas of the outer face 3 are connected, especially by welding. Except for the sealing face 4, the outer face 3 extends over the entire width of the composite material 1. The composite material 1 has two dark fold lines 7 in the area of ​​the outer face 3. The two dark fold lines 7 are straight and extend parallel to each other. In addition, the dark fold lines 7 pass through the contact point SB of three adjacent triangular faces 8 of the bottom face 5 and through the contact point SG of three adjacent triangular faces 8 of the gable face 6. The outer face 3 is divided by the dark fold lines 7 into an inner portion region 3A and two outer portion regions 3B. The inner region 3A is located between the two dark fold lines 7, while the outer region 3B is located next to or outside the two dark fold lines 7.

[0055] The bottom surface 5 has four corner points E5, and the gable surface 6 has four corner points E6. Corner points E5 and E6 are the corner points of the packaging to be manufactured from the composite material 1. Each corner point E5 of the bottom surface 5 corresponds to a corresponding corner point E6 of the gable surface 6, which is positioned above the corner point E5 when the packaging is upright. The corner axis EA passes through two corresponding corner points E5 and E6, and in a conventional cuboid packaging, this corner axis corresponds to the vertical edge of the packaging. Therefore, there are four corner axes EA in the composite material 1 shown in Figure 1A, and also in the outer packaging and the packaging made from it (for clarity, only one corner axis EA is always drawn). There is no fold line between the corner point E5 of the bottom surface 5 and the corner point E6 of the corresponding gable surface 6, i.e., along the corner axis EA.

[0056] Figure 1B shows, in a front view, a packaging jacket 9 formed from the flat composite material 1 shown in Figure 1A, as known in the prior art. The areas of the packaging jacket 9 already illustrated in conjunction with Figure 1A are given corresponding reference numerals in Figure 1B. The packaging jacket 9 is made from the composite material 1 in two steps: first, the composite material 1 is folded along two dark fold lines 7. Then, in the area of ​​the sealing surface 4, two partial areas 3B (left) and 3B (right) of the jacket surface 3 are joined together, in particular welded together, thereby forming a longitudinal seam 10 (hidden in Figure 1B). The packaging jacket 9 thus has a surrounding, circumferentially closed structure, with openings in the area of ​​the bottom surface 5 and in the area of ​​the gable surface 6. The inner partial area 3A of the jacket surface 3 is visible in the front view, its sides defined by the dark fold lines 7. The remaining partial area 3B of the jacket surface 3 is located on the back of the packaging jacket 9 and is therefore hidden in Figure 1B.

[0057] Figure 1C shows a rear view of the packaging jacket 9 from Figure 1B. The areas of the packaging jacket 9 already illustrated in conjunction with Figures 1A and 1B are given corresponding reference numerals in Figure 1C. In the rear view, two outer portion areas 3B of the jacket surface 3 are visible, connected together by a longitudinal seam 10 and defined on both sides by a dark fold line 7. The inner portion area 3A of the jacket surface 3 is located on the front side of the packaging jacket 9 and is therefore hidden in Figure 1C.

[0058] Figure 1D shows the packaging cover 9 in the unfolded state as shown in Figures 1B and 1C. The areas of the packaging cover 9 already described in conjunction with Figures 1A to 1C are given corresponding reference numerals in Figure 1D. The unfolded state is achieved by folding the packaging cover 9 back along the dark fold line 7 that passes through the cover surface 3. The cover is folded back approximately 180°. As a result of this folding back along the dark fold line 7, the two adjacent portions 3A and 3B of the cover surface 3 along the dark fold line 7 no longer overlap each other, but are arranged in the same plane. Therefore, the packaging cover 9 is folded along the dark fold line 7 only in its flat state (Figures 1B and 1C); in contrast, in the unfolded state (Figure 1D), the packaging cover 9 (and the packaging to be manufactured from it) no longer folds along the dark fold line 7. Therefore, the "dark" fold line 7 is named.

[0059] Figure 1E shows the packaging jacket 9 from Figure 1D with a closed bottom. The areas of the packaging jacket 9 already illustrated in conjunction with Figures 1A to 1D are marked with corresponding reference numerals in Figure 1E. The pre-folded state indicates (as shown in Figure 1D) that the two fold lines 2 in the gable side 6 area have been pre-folded. In contrast, the bottom side 5 has been fully folded and welded, giving the packaging jacket 9 a closed bottom.

[0060] Figure 1F shows the welded package 11 formed from the packaging jacket 9 shown in Figure 1B. The areas of package 11 already illustrated in conjunction with Figures 1A to 1E are given corresponding reference numerals in Figure 1F. Package 11 is shown after welding, i.e., in a filled and closed state. After closure, fin-shaped seams 12 are formed in the areas of the bottom surface 5 and the gable surface 6. The fin-shaped seams 12 in the area of ​​the bottom surface 5 are already attached to package 11, while the fin-shaped seams 12 in the area of ​​the gable surface 6 still protrude from package 11. A portion of the gable surface 6 is folded outward during pre-folding (see Figure 1E) and forms a protruding area, also called "ears" 13, with excess material, which is then attached to package 11 in subsequent manufacturing steps, for example, by an adhesive process. In Figure 1F, the ears 13 still protrude from package 11 and are attached in subsequent manufacturing steps, for example, by an adhesive process.

[0061] Figure 1G shows the package 11 from Figure 1F with abutting ears. The areas of package 11 already illustrated in conjunction with Figures 1A to 1F are given corresponding reference numerals in Figure 1G. The upper ears 13, arranged in the gable surface 6 area, are folded down and flatly abutted against the outer surface 3 of package 11. Preferably, the upper ears 13 are adhered or welded to the outer surface 3.

[0062] Figure 2A A top view shows a flat composite material 1' for a folding packaging jacket according to the present invention. The area of ​​composite material 1' already illustrated in conjunction with Figures 1A to 1G is... Figure 2A Corresponding reference numerals are provided in the accompanying drawings. The bottom surface 5 of the composite material 1' can be divided into a triangular bottom surface 5' and a quadrilateral bottom surface 5'". The triangular bottom surface 5' forms an ear 13 (see Figure 1F), which is folded inward or outward and abuts against the packaging; in contrast, the quadrilateral bottom surface 5' determines the shape of the bottom. Figure 2A In the composite material 1' shown, the angles of the quadrilateral base 5” are approximately right angles (α). β = 90°), therefore, the packaging made from this composite material 1' also has an approximately rectangular, especially approximately square, bottom. Accordingly, the gable surface 6 of the composite material 1' can be divided into a triangular gable surface 6' and a quadrilateral gable surface 6'". The triangular gable surface 6' forms an ear 13 (see Figure 1F), which folds inward or outward and rests against the packaging; in contrast, the quadrilateral gable surface 6' determines the shape of the gable. In Figure 2A In the composite material 1' shown, the angle of the quadrilateral gable 6” is not a right angle, but slightly less than 90° (α). G1 < 90°) or slightly greater than 90° (α) G2 >90°), forming an approximate trapezoid. Packaging made from this composite material 1' therefore also has an approximate trapezoidal gable. Small gable face angle α G1Preferably within the range of 80° and 90°, while the gable angle α G2 Within the range of 90° and 100°. The side adjacent to the quadrilateral gable face 6” of the front 14 is also called the front edge V. The front edge V is preferably curved in the direction of the front 14.

[0063] Figure 2A The outer casing 3 of the composite material 1' shown has multiple fold lines that divide it into multiple surfaces. The outer casing 3 includes a front face 14, a first back face 15A and a second back face 15B, a first side face 16A and a second side face 16B, a first stress-relieving surface 17A, and a second stress-relieving surface 17B. The front face 14 is adjacent to a quadrilateral bottom surface 5” in the bottom region and to a quadrilateral trapezoidal gable surface 6” in the gable region. The front face 14 is laterally adjacent to the first stress-relieving surface 17A and the second stress-relieving surface 17B. The two stress-relief surfaces 17A and 17B also abut the quadrilateral base surface 5 in the bottom region (i.e., similar to 14 above); however, the two stress-relief surfaces 17A and 17B abut one of the triangular gable surfaces 6' in the gable region, respectively. The two side surfaces 16A and 16B abut one of the triangular base surfaces 5' in the bottom region and one of the triangular gable surfaces 6' in the gable region. The two side surfaces 16A and 16B abut one of the two stress-relief surfaces 17A and 17B on their inner sides in the lateral direction, and each abut one of the two back surfaces 15A and 15B on its outer side (the first side surface 16A abuts the first back surface 15A and the first stress-relief surface 17A, and the second side surface 16B abuts the second back surface 15B and the second stress-relief surface 17B). The two back surfaces 15A and 15B abut the quadrilateral base surface 5" in the bottom region and the quadrilateral gable surface 6" in the gable region. The two back faces 15A and 15B are respectively adjacent to one of the two side faces 16A and 16B on their inner sides in the lateral direction (the first back face 15A is adjacent to the first side face 16A and the second back face 15B is adjacent to the second side face 16B).

[0064] exist Figure 2AIn the flat composite material 1' shown, the outer surface 3 has multiple outer fold lines 18', 18”, and 18'''. The first outer fold line 18' laterally defines the front surface 14 and forms the boundary between the front surface 14 and the two stress-relief surfaces 17A and 17B. Preferably, the two first outer fold lines 18' are at least segmentally curved. The two second outer fold lines 18” form the boundary between the two stress-relief surfaces 17A and 17B and the two side surfaces 16A and 16B. Preferably, the two second outer fold lines 18" are also at least partially bent. The two third outer fold lines 18''' form the boundary between the two stress-relieving surfaces 17A, 17B and the two back surfaces 15A, 15B. Preferably, the two third outer fold lines 18''' are also at least partially bent. The composite material 1' also has a paper or cardboard layer whose main fiber direction F extends laterally (i.e., perpendicular to the two longitudinal edges L extending from the bottom surface 5 through the outer surface 3 to the gable surface 6) through the surfaces 14, 15A, 15B, 16A, 16B, 17A, 17B forming the outer surface, and thus extends circumferentially in the packaging made of the composite material 1'. In addition, the composite material 1' has a weakened area 19 that can be used to define the position of the pouring element. The weakened area 19 can be designed as a hole in the cover or a hole that runs through the composite material 1'.

[0065] Figure 2B The enlarged image shows the source Figure 2A The first region of composite material 1'. Already combined with Figure 1A to Figure 2A The region of the composite material 1' described is in Figure 2B The corresponding attached figures are marked with labels. Figure 2B The first region of the composite material 1' shown in the figure relates to the area of ​​the gable face 6, especially the gable face angle α. G1 α G2 The area. As mentioned earlier, the 6” angle of the quadrilateral gable is not a right angle, but slightly smaller than 90° (α). G1 < 90°) or slightly larger (α) G2 > 90°). For the rear (corresponding to the back of the packaging) gable angle α G1 The deviation from the right angle is due to the adjacent angle α G1 One of the two fold lines does not extend perpendicularly to the edge of composite material 1', but is inclined at a certain angle β1(α) relative to the vertical line S1. G1 = 90°-β1). For the front (corresponding to the front of the packaging) gable angle α G2 The deviation from the right angle has two reasons: First, the adjacent angle α G2 One of the two fold lines does not extend perpendicularly to the edge of composite material 1', but is inclined at a certain angle β2 relative to the perpendicular line S2. Secondly, the line adjacent to this angle α... G2The front edge V does not extend in a straight line, but curves in the direction of the front 14, where the front edge V (or tangent) in the angular region or angle α G2 The area in contact with the front edge V) is inclined at a certain angle γ (α) relative to the horizontal line W (which extends parallel to the upper edge of the composite material 1'). G2 = 90° + β2 + γ). Angle β1 equals angle β2; these two angles are preferably in the range of 2° and 6°. Therefore, the two rear gable face angles α G1 For example, it can have an angle of approximately 86°. The angle γ is preferably in the range of 15° to 25°. The two front gable angles α G2 Therefore, it can have an angle of approximately 113°, for example. From the described design scheme, especially from the curved front edge V, the sum of the angles of the quadrilateral gable face 6” is greater than 360° (2*α). G1 +2*α G2 >360°).

[0066] Figure 2C The enlarged image shows the source Figure 2A The second region of the flat composite material 1'. Already combined with Figure 1A to... Figure 2B The region of composite material 1' described is in Figure 2C The corresponding attached figures are marked with labels. Figure 2C The second region of the composite material 1' shown relates to the region of the third outer fold line 18''', which separates the sides 16A, 16B from the back surfaces 15A, 15B. The third outer fold line 18''', arranged between the sides 16A, 16B and the adjacent back surfaces 15A, 15B, has four segments I-IV: the first segment I is adjacent to the bottom surface 5 and extends in a straight line. The second segment II is adjacent to the first segment I and extends in a curved manner (in the direction of the back surfaces 15A, 15B). Due to the curvature, there is a maximum distance d between the third outer fold line 18''' and the vertical line S. II This distance can be between 0.5 mm and 2.5 mm. The third segment III is adjacent to the second segment II and extends in a curved manner (in the directions of sides 16A and 16B). Due to the curvature, the maximum distance d exists between the third overlay fold line 18''' and the perpendicular line S. III It can be in the range of 0.5 mm to 2.5 mm. The second section II and the third section III therefore have opposite curvatures or bending directions. The fourth section IV is adjacent to the third section III and to the gable face 6 and extends in a straight line. The third overcoat fold line 18''' therefore extends in a straight line segmentally (in section I adjacent to the bottom face 5 and in section IV adjacent to the gable face 6) and extends in a curved line segmentally (in the two "center" sections II and III).

[0067] Figure 3A The previous view shows the packaging jacket 9' according to the invention, which is made of Figure 2A The flat composite material 1' shown is formed. It has been combined with Figures 1A to... Figure 2C The packaging cover 9' area is described. Figure 3A The corresponding reference numerals are provided. The packaging outer shell 9' is made of composite material 1' in two steps: First, composite material 1' is folded along two dark fold lines 7. Then, the first back surface 15A and the second back surface 15B are joined together in the area of ​​the sealing surface 4, specifically by welding, thereby creating a longitudinal seam 10 (in Figure 3A (Hidden in the middle). The packaging jacket 9' therefore has a surrounding, circumferentially closed structure, with an opening in the area of ​​the bottom surface 5 and an opening in the area of ​​the gable surface 6. The front view shows the front 14, two stress-relieving surfaces 17A, 17B and (partially) two side surfaces 16A, 16B. The back 15A, 15B are located on the rear side of the packaging jacket 9', therefore in Figure 3A It is hidden in the middle.

[0068] Figure 3B The following view shows from Figure 3A The packaging jacket 9'. Already combined with Figure 1A to... Figure 3A The packaging cover 9' area is described. Figure 3A Corresponding reference numerals are provided in the accompanying drawings. In the rear view, the two back faces 15A, 15B are visible, connected to each other by the longitudinal seam 10 and defined on both sides by the third outer fold line 18'''. Additionally, the two side faces 16A, 16B are (partially) visible. The front face 14 and the two stress-relief surfaces 17A, 17B are located on the front side of the packaging outer 9', therefore... Figure 3B It is hidden in the middle.

[0069] Figure 4A A perspective view shows the packaging 20 according to the invention, which consists of... Figure 3A and Figure 3B The packaging jacket 9' shown is formed. It has been combined with Figure 1A to... Figure 3B The packaging area 20 is described in the instructions. Figure 4A The corresponding figure labels are provided. Figure 4AAs can be clearly seen, stress-relieving surface 17A (and stress-relieving surface 17B, not shown) corresponds to the front of package 20 in the bottom region, while stress-relieving surface 17A corresponds to the left side of package 20 in the gable region (and stress-relieving surface 17B, not shown, corresponds to the right side of package 20 in the gable region accordingly). Stress-relieving surfaces 17A and 17B thus "rotate" from the front of package 20 around one (virtual) edge of package 20 along one side of the package. Stress-relieving surfaces 17A and 17B thus form a transition from the front of package 20 (where it is adjacent to the front 14) to both sides of package 20 (where it is adjacent to the two side surfaces 16A and 16B). Figure 4A It can also be seen that the packaging 20 has a sloping gable (“sloping gable”), on which the screw cap 21 is arranged. The trapezoidal design of the gable can also be seen, which is achieved by the quadrilateral gable surface 6” having an angle deviating from 90° (in... Figure 4A In the middle, the two small gable corners α adjacent to the back face 15A and 15B G1 It has an angle of <90° and is adjacent to the two large gable faces α in front of it. G2 (With an angle > 90°). Furthermore, it can be clearly seen in Figure 4A that the first outer fold line 18', the second outer fold line 18”, and the third outer fold line 18''' are curved.

[0070] Figure 4B Shown in front view Figure 4A The package shown is 20. It has been combined with Figure 1A to... Figure 4A The packaging area 20 is described in the instructions. Figure 4B The corresponding attached diagrams are provided. The trapezoidal design of the gable is shown in... Figure 4B The curves are clearly visible. In addition, the curvature of the first coat fold line 18' and the second coat fold line 18” is also clearly visible.

[0071] Figure 4C The following view shows Figure 4A The package shown is 20. It has been combined with Figure 1A to... Figure 4B The area of ​​the package 20 described is in Figure 4C The corresponding figure labels are provided. Figure 4C The rear side of the package 20, consisting of two back sections 15A and 15B, is particularly clearly visible. Furthermore, the curved extension of the third outer fold line 18'' is clearly visible.

[0072] at last, Figure 4D Shown in side view Figure 4A The package shown is 20. It has been combined with Figure 1A to... Figure 4C The packaging area 20 is described in the instructions. Figure 4DThe corresponding figure labels are provided. Figure 4D The left side of the package 20, consisting of the first side surface 16A and part of the first stress-relieving surface 17A, is particularly clearly visible. The (folded-back) dark fold line 7 also passes through the first side surface 16A. This also applies to... Figure 4D The packaging 20, not shown, is positioned opposite each other on the right side because both sides are designed to be identical (mirror symmetry). Furthermore, in Figure 4D It can be clearly seen that the packaging 20 is located in the upper front area ( Figure 4D The right side of the middle protrudes outward and arches, and in the upper region behind it ( Figure 4D The left side of the middle section is concave and arched inward.

[0073] Explanation of reference numerals in the attached figures

[0074] 1, 1': Flat composite material

[0075] 2: Folding lines

[0076] 3, 3A, 3B: Outerwear

[0077] 4: Sealing surface

[0078] 5, 5', 5”: Bottom

[0079] 6, 6', 6”: Gable side

[0080] 7: Concealed fold lines

[0081] 8: Triangular face

[0082] 9, 9': Packaging outer layer

[0083] 10: Longitudinal joint

[0084] 11: Packaging

[0085] 12: Fin-shaped seam

[0086] 13: Ears

[0087] 14: The front

[0088] 15A, 15B: First and second back sides

[0089] 16A, 16B: First and second side surfaces

[0090] 17A, 17B: First and second stress relief surfaces

[0091] 18', 18”, 18''': Coat fold lines

[0092] 19: Weakened Zone

[0093] 20: Packaging

[0094] 21: Screw cap

[0095] α B Bottom corner (fold line in the bottom area)

[0096] α G1 α G2 Gable face corner (fold line in the gable area)

[0097] β1, β2: Inclination angles (relative to the vertical lines S1, S2)

[0098] γ: Inclination angle (relative to the horizontal line W)

[0099] d II d III Distance (between the third outer fold line 18''' and the perpendicular line S)

[0100] EA: Angle axis

[0101] E5: corner point (bottom 5)

[0102] E6: Corner point (gable side 6)

[0103] F: Main fiber direction

[0104] L: Longitudinal edge

[0105] S, S1, S2: Perpendicular lines

[0106] SB: Contact point (triangular face 8 of base 5)

[0107] SG: Contact point (triangular face 8 of gable 6)

[0108] V: Front edge (quadrilateral gable face 6)

[0109] W: Horizontal line

[0110] Sections I, II, III, and IV: (Third outer fold line 18''')

Claims

1. Flat composite (1') for producing a package (20), comprising: - a polymer outer layer, - a polymer inner layer, - a fiber-containing carrier layer arranged between the polymer outer layer and the polymer inner layer, - wherein the flat composite (1') has a plurality of folding lines, the arrangement and design of which enable the production of a closed package (20) by folding the flat composite (1') along the folding lines and by connecting the seam faces of the flat composite (1'), - a mantle face (3), wherein the mantle face (3) comprises a front face (14), a first side face (16A), a second side face (16B), a first back face (15A) and a second back face (15B), - a base face (5), wherein the base face (5) comprises a triangular base face (5') and a quadrangular base face (5"), - a gable face (6), wherein the gable face (6) comprises a triangular gable face (6') and a quadrangular gable face (6"), - wherein the base face (5) and the gable face (6) are arranged on opposite sides of the mantle face (3), characterized in that At least one quadrangular gable surface (6") is provided, which has two small gable surface angles (α G1 ) of less than 90° and two large gable surface angles (α G2 ) of more than 90°, and the angle sum is greater than 360°, wherein at least one side of the quadrangular gable surface (6") is curved outwards.

2. Flat composite (1') according to claim 1, characterized in that at least one of the quadrangular gable faces (6") is approximately trapezoidal.

3. Flat composite (1') according to claim 1 or 2, characterized in that the quadrangular gable faces (6") have a front edge edge (V) which adjoins the front face (14) and is curved.

4. Flat composite (1') according to claim 1, characterized in that two hidden folding lines (7) are provided which extend parallel to one another through the mantle face (3).

5. Flat composite (1') according to claim 1, characterized in that the mantle face (3) has at least one stress release face (17A, 17B) which is arranged between the front face (14) and one of the two side faces (16A, 16B).

6. Flat composite (1') according to claim 5, characterized in that the at least one stress release face (17A, 17B) adjoins one quadrangular base face (5") in the region of the base face (5) and one triangular gable face (6') in the region of the gable face (6).

7. Flat composite (1') according to claim 5, characterized in that between the at least one stress release face (17A, 17B) and the front face (14) adjoining it a first mantle folding line (18') is provided which is at least section-wise curved.

8. Flat composite (1') according to claim 5, characterized in that between the at least one stress release face (17A, 17B) and the side face (16A, 16B) adjoining it a second mantle folding line (18") is provided which is at least section-wise curved.

9. Flat composite (1') according to claim 1, characterized in that A third outer sleeve fold line (18''') is provided between at least one side face (16A, 16B) and the back face (15A, 15B) adjoining thereto, said third outer sleeve fold line being at least sectionally curved.

10. Flat composite material (1') according to claim 9, characterized in that the third outer sleeve fold line (18''') has a plurality of sections (I, II, III, IV), wherein at least one section (II, III) is curved, and wherein at least one section (I, IV) is straight.

11. Flat composite material (1') according to claim 9, characterized in that the third outer sleeve fold line (18''') has a plurality of sections (I, II, III, IV), wherein the section (I) adjoining the base face (5) and the section (IV) adjoining the gable face (6) are straight.

12. Flat composite material (1') according to claim 9, characterized in that the third outer sleeve fold line (18''') has a plurality of sections (I, II, III, IV), wherein at least two sections (II, III) have opposite directions of curvature.

13. Flat composite material (1') according to claim 1, characterized in that the fibre-containing carrier layer of the flat composite material (1') has a main fibre direction (F) which extends perpendicular to a longitudinal edge (L) of the flat composite material (1') which extends from the base face (5) to the gable face (6).

14. Packaging sleeve (9') made of a composite material for producing a packaging (20), comprising: - a sleeve face (3), wherein the sleeve face (3) comprises a front face (14), a first side face (16A), a second side face (16B), a first back face (15A) and a second back face (15B), - a base face (5), wherein the base face (5) comprises a triangular base face (5') and a quadrangular base face (5"), - a gable face (6), wherein the gable face (6) comprises a triangular gable face (6') and a quadrangular gable face (6"), - two dark fold lines (7) which extend through the sleeve face (3) parallel to one another, and - a longitudinal seam (10) which connects two edge regions of the composite material (1') as a circumferential packaging sleeve (9') which is open both in the region of the base face (5) and in the region of the gable face (6), - wherein the base face (5) and the gable face (6) are arranged on opposite sides of the sleeve face (3), and - wherein the packaging sleeve (9') is folded along the two dark fold lines (7), characterized in that At least one quadrangular gable surface (6") has two small gable surface angles (a G1 ) smaller than 90° and two large gable surface angles (a G2 ) larger than 90°, and the angle sum is greater than 360°, wherein at least one side of the quadrangular gable surface (6") is curved outwards.

15. Packaging sleeve (9') according to claim 14, characterized in that the packaging sleeve (9') is made of a flat composite material (1') according to any one of claims 1 to 13.

16. Packaging sleeve (9') according to claim 14, characterized in that the composite material has at least one layer made of paper or paperboard which is covered on the edge of the longitudinal seam (10) which extends within the packaging sleeve (9').

17. The packaging jacket (9') according to claim 16, characterized in that the layer made of paper or paperboard is covered by a sealing strip and / or by turning the composite material in the area of the longitudinal seam (10).

18. The packaging jacket (9') according to claim 14, characterized in that the composite material is thinned in the area of the longitudinal seam (10).

19. A package (20) made of composite material, - wherein said package (20) is made of manufactured from the flat composite material (1') according to claim 1, or wherein the package (20) is manufactured from the packaging jacket (9') according to claim 14, and - wherein the package (20) is closed in the area of the bottom face (5) and in the area of the gable face (6).

20. The package (20) according to claim 19, characterized in that the package (20) has a fin-shaped seam (12) in the area of the gable face (6), which turns in the direction of the front face (14).

21. The package (20) according to claim 19, characterized in that the package (20) has an approximately trapezoidal gable portion.

22. The package (20) according to claim 19, characterized in that the package (20) has an inclined gable portion.

23. The package (20) according to claim 19, characterized in that the package (20) is convexly formed in the area of the front face (14) and / or concavely formed in the area of the back face (15A, 15B).

24. The package (20) according to claim 19, characterized in that the package (20) has stress relief faces (17A, 17B), which are section-wise located in one plane with the front face (14) and section-wise located in one plane with the side faces (16A, 16B).

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