Package with planar laminate, packaging sleeve, and stress relief panel

Abstract

Illustrated and described is a flat laminate 1' for producing a package 20. The flat laminate 1' comprises an outer polymeric layer, an inner polymeric layer, and a fibrous support layer disposed between the outer and inner polymeric layers. The flat laminate (1') has a plurality of fold lines arranged and designed so that a closed package (20) can be produced by folding the flat laminate (1') along the fold lines and connecting the seam surfaces of the flat laminate (1'); a sleeve surface (3) having a front surface (14), a first side surface (16A), a second side surface (16B), a first rear surface (15A), and a second rear surface (15B); a bottom surface (5) having a plurality of triangular bottom surfaces (5') and a plurality of rectangular bottom surfaces (5"); and a gable surface (6) having a plurality of triangular gable surfaces (6') and a plurality of rectangular gable surfaces (6"), the bottom surface (5) and the gable surface (6) being located at opposite ends of the sleeve surface (3). In order to allow the manufacture of packages of increasingly complex shapes without compromising the rigidity of the package, it is proposed that the sleeve surface (3) has at least one stress relief surface (17A, 17B) arranged between the front surface (14) and one of the two side surfaces (16A, 16B).A packaging sleeve (9') made of laminate material, as well as a package (20) manufactured from the laminate material (1') or packaging sleeve (9') are also shown and described.

Description

[Technical Field]

[0001] The present invention relates to a flat laminate for producing a package, the flat laminate comprising an outer polymeric layer, an inner polymeric layer, and a fibrous support layer disposed between the outer and inner polymeric layers, the flat laminate having a plurality of fold lines arranged and designed to allow the flat laminate to be folded along the fold lines to connect seam surfaces of the flat laminate to produce a closed package; a sleeve surface having a front surface, a first side surface, a second side surface, a first rear surface, and a second rear surface; a bottom surface having a plurality of triangular bottom surfaces and a plurality of rectangular bottom surfaces; and a gable surface having a plurality of triangular gable surfaces and a plurality of rectangular gable surfaces, the bottom surface and the gable surface being disposed at opposite ends of the sleeve surface.

[0002] The present invention further relates to a packaging sleeve made of a laminate material for producing a package, the packaging sleeve comprising: a sleeve surface having a front surface, a first side surface, a second side surface, a first rear surface, and a second rear surface; a bottom surface having a plurality of triangular bottom surfaces and a plurality of rectangular bottom surfaces; a gable surface having a plurality of triangular gable surfaces and a plurality of rectangular gable surfaces; two secondary fold lines extending parallel to each other through the sleeve surface; and a longitudinal seam connecting two edge regions of the laminate material to form a tubular packaging sleeve that is open in both the bottom surface region and the gable surface region, the bottom surface and the gable surface region being located at opposite ends of the sleeve surface, and the packaging sleeve being folded along both secondary fold lines.

[0003] The invention finally relates to a packaging made of laminate, the packaging being manufactured from a flat laminate according to the preamble of claim 1, or the packaging being manufactured according to claim 1. 9 The present invention relates to a packaging body produced from a packaging sleeve according to the preamble of claim 1, wherein the packaging body is sealed in the area of ​​the bottom surface and in the area of ​​the gable surface. 8The flat laminate material according to any one of claims 1 to 4 or the package is manufactured from the flat laminate material according to claim 1 9 ~ 12 The packaging body can be produced from the packaging sleeve according to any one of claims 1 to 4, and can be sealed in the bottom surface region and the gable surface region. [Background technology]

[0004] Packaging (filled packaging) can be produced in several different ways and from a wide range of materials. One widely used production method involves cutting a blank from a flat laminate, then folding and further processing to first create a packaging sleeve and finally the packaging itself. Alternatively, packaging can be produced directly from the laminate, i.e., without the intermediate step of a packaging sleeve. This type of production has the advantage, among other things, that the laminate and packaging sleeve are very flat and can therefore be stacked in a space-saving manner. This allows the production of the laminate and packaging sleeve to take place in a location different from where the packaging is folded and filled. Laminates are often used as materials. For example, flat laminates consist of multiple thin layers of paper, cardboard, plastic, and / or metal, especially aluminum. Such packaging is widely used, especially in the food industry.

[0005] The first manufacturing step often consists of cutting a blank from the flat laminate and then folding it into a tubular packaging sleeve by folding and welding or gluing the seams. The folding is usually performed along the crease lines. The position of the crease lines therefore often corresponds to the position of the folds of the package to be produced from the packaging sleeve. The advantage of this is that in both cases the flat laminate, or the blank and packaging sleeve produced therefrom, are folded only at the points where the finished package will be folded. One method for producing packages from packaging sleeves is known, for example, from Patent Document 1 (in particular Figures 1A to 1E). The package described in Patent Document 1 has a rectangular cross-section and is approximately rectangular.

[0006] However, one drawback of folding the packaging sleeve along the fold of the subsequent package is that only packages with an angular cross section can be produced, and furthermore, only packages whose cross section is the same in the vertical direction of the package can be produced, whereas alternative designs, such as rounded or free-form folds, are not possible.

[0007] To allow for more flexible shaping, packaging sleeves have already been proposed in which the folds of the packaging sleeve do not correspond to the folds of the packaging of the package produced from the packaging sleeve. This is achieved by folding the packaging sleeve along so-called "secondary fold lines." The secondary fold lines are folded back during the production of the package and therefore do not form any folds of the package. This makes it possible to produce packages whose sleeve surfaces do not have any folds, or in any case, do not have straight folds. Such packaging sleeves and packages produced therefrom are known, for example, from Patent Document 2 (particularly Figures 2A to 3G').

[0008] While the use of "secondary fold lines" can provide some flexibility in the design of the sleeve surface shape of the package, the secondary fold lines do not contribute to increasing the rigidity of the package and may even reduce the rigidity of the package by folding and unfolding the secondary fold lines. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] International Publication No. 2015 / 003852(A9) [Patent Document 2] German Patent Application Publication No. 10 2016 003 824(A1) Summary of the Invention [Means for solving the problem]

[0010] Against this background, the object underlying the present invention is to design and further develop the flat laminate mentioned at the outset and explained in more detail above, so that the production of packages with even more complex shapes, in particular liquid-tight packages, becomes possible without compromising the rigidity of the package.

[0011] This object is achieved in the case of a flat laminate according to the preamble of claim 1 in that the sleeve surface has at least one stress relief surface, which is arranged between the front surface and one of the two side surfaces.

[0012] The flat laminate according to the present invention is used to manufacture packages. The flat laminate can be cut to a specified size. This specified size may be sufficient for the manufacture of multiple packages or may be sufficient for the manufacture of only a single package. Therefore, a laminate cut to a specified size, particularly the size of an individual package, is also referred to as a "blank." The flat laminate has multiple layers that are superimposed and interconnected to form a flat laminate. The flat laminate comprises a polymer outer layer, a polymer inner layer, and a fibrous support layer disposed between the polymer outer layer and the polymer inner layer. The polymer inner layer and the polymer outer layer are made of plastic, which provides the laminate with liquid-tight properties. On the other hand, the fibrous support layer (preferably paper or cardboard) primarily serves to provide the laminate with improved mechanical properties, particularly improved rigidity. Optionally, a barrier layer can also be provided. The barrier layer is also disposed between the polymer outer layer and the polymer inner layer (preferably between the fibrous support layer and the polymer inner layer). The barrier layer can be made of aluminum, for example, and its purpose is to prevent the passage of light and / or oxygen. The flat laminate material has a sleeve surface. The sleeve surface has a front surface, a first side surface, a second side surface, a first rear surface, and a second rear surface. The flat laminate material also has a bottom surface. The bottom surface has a plurality of triangular bottom surfaces and a plurality of rectangular bottom surfaces. The flat laminate material also has a gable surface. The gable surface has a plurality of triangular gable surfaces and a plurality of rectangular gable surfaces. Preferably, the bottom surface and the gable surface each have two or three rectangular surfaces and six triangular surfaces. The rectangular surfaces serve to fold the bottom surface and the gable surface of the package. The triangular surfaces serve to fold excess laminate material into protruding "ears." The ears are then pressed against the package. The bottom surface and the gable surface are located at opposite ends of the sleeve surface. Preferably, when the package is upright, the gable surface is positioned above the sleeve surface and the bottom surface is positioned below the sleeve surface. The flat laminate also has a plurality of fold lines. The fold lines are positioned and designed so that a closed package can be produced by folding the flat laminate along the fold lines and connecting the seam surfaces of the flat laminate.Therefore, these fold lines (also called "score lines" especially before folding) should facilitate folding of the flat laminate. These fold lines can be formed by weakening the material. Because the packages produced from the laminate need to be liquid-tight, the material is weakened not by perforations but by (usually linear) material displacements imprinted into the laminate by a pressing tool.

[0013] According to the present invention, the sleeve surface has at least one stress relief surface arranged between the front surface and one of the two side surfaces. The stress relief surface serves to create as smooth a transition as possible between the front surface and the side surfaces. Preferably, the stress relief surface extends over the entire height of the sleeve surface, i.e., from the bottom surface to the gable surface, separating the front surface from the two side surfaces. The technical effect of the stress relief surface is that the transition from the front surface to the two side surfaces is made via two less curved ("more obtuse") folds, so that the laminate can be folded or bent at a less steep angle compared to the 90° folds of a rectangular package. This reduces stresses on the laminate, and therefore the risk of cracking or breaking of the fibers, in particular in the fibrous support layer (paper or cardboard layer) of the laminate. Preferably, the sleeve surface has two stress relief surfaces arranged between the front surface and each of the two side surfaces. These stress relief surfaces also ensure that between adjacent packages there are gaps or free spaces in the area of ​​the stress relief surface through which air can circulate, unlike rectangular packages. This has the advantage of reducing the risk of mould forming as a result of moisture. A further advantage of stress relief surfaces is that the surfaces adjacent to them can be designed to be narrower and therefore more stable, thereby improving gripping rigidity when pouring out of the filled package.

[0014] According to a further design of the flat laminate, at least one stress relief surface is adjacent to one rectangular bottom surface in the bottom surface region and one triangular gable surface in the gable surface region. The triangular surfaces in the bottom and gable regions generally correspond to the side surfaces of the flat laminate and therefore to the side surfaces of a package manufactured therefrom. On the other hand, the rectangular surfaces in the bottom and gable regions generally correspond to the front and rear surfaces of the flat laminate and therefore to the front and rear sides of a package manufactured therefrom. By differentiating the surface adjacent to the stress relief surface in the bottom surface region from the surface adjacent to the gable region, the stress relief surface is associated with the front side of the package in its lower region and the side surface of the package in its upper region. Thus, the stress relief surface "wraps" around the (imaginary) vertical fold of the package. The stress relief surface of this design has the advantage that the above-mentioned technical effects (reduced stress on the laminate and improved air circulation) occur not only on one side of the package but also on both sides of the package. Alternatively, or in addition, at least one stress relief surface may be adjacent to a triangular base surface in the region of the base surface and adjacent to a rectangular gable surface in the region of the gable surface. Preferably, the adjacent surfaces are adjacent to each other linearly, i.e., along a line segment, rather than just contacting each other at a single point.

[0015] According to a further configuration of the planar laminate, a first sleeve fold line, preferably at least partially curved, may be provided between at least one stress relief surface and the adjacent front surface. By providing a fold line between the stress relief surface and the front surface, a fold with a defined path is realized, facilitating the manufacture of the package. This fold also improves the structural properties of the package, particularly its rigidity, compared to a curved shape without a fold line. The curved path of the sleeve fold line facilitates the formation of convex or concave surfaces that create voids between adjacent packages, improving air circulation. A first sleeve fold line, preferably at least partially curved, may be provided between each of the stress relief surfaces and the adjacent front surface. The first sleeve fold line may also be continuously curved.

[0016] A further design of the planar laminate is such that a second sleeve fold line, preferably at least partially curved, is provided between at least one stress relief surface and an adjacent side surface. As already described with respect to the first sleeve fold line, the second sleeve fold line also provides a fold with a defined path, facilitating the manufacture of the package. This fold also improves the structural properties of the package, particularly its rigidity, compared to a curved shape without a fold. The curved path of the sleeve fold line makes it easier to form convex or concave surfaces that create gaps between adjacent packages, improving air circulation. A second sleeve fold line, preferably at least partially curved, can be provided between each of the stress relief surfaces and the adjacent side surface. The second sleeve fold line can also be continuously curved.

[0017] In a further configuration of the planar laminate, a third sleeve fold line, preferably at least partially curved, may be provided between at least one side surface and the adjacent rear surface. As already described with respect to the first and second sleeve fold lines, the third sleeve fold line also provides a fold with a defined path, facilitating the manufacture of the package. This fold also improves the structural properties of the package, particularly its rigidity, compared to a curved shape without a fold. The curved path of this sleeve fold line also makes it easier to form convex or concave surfaces that create gaps between adjacent packages to improve air circulation. The third sleeve fold line, preferably at least partially curved, may be provided between each of the two side surfaces and the adjacent rear surface. The third sleeve fold line may also be continuously curved.

[0018] A further configuration of the planar laminate is characterized by two secondary fold lines extending parallel to each other through the sleeve surface. Secondary fold lines are understood to mean fold lines that, unlike conventional fold lines, do not subsequently form folds on the packaging body, but are instead located between the folds of the packaging body, e.g., on the sides. The secondary fold lines are used to create packaging sleeves from the laminate. The packaging sleeves are preferably folded flat along the two secondary fold lines to allow for stacking and transportation in as space-saving a manner as possible.

[0019] According to a further configuration of the planar laminate, at least one rectangular gable face is provided having two small gable face angles less than 90°, two large gable face angles greater than 90°, and a sum of angles greater than 360°. Angles other than 90° result in a gable face that deviates from a rectangle or square. A rectangular gable face with two small (<90°) and two large (>90°) gable face angles can be realized, for example, by a trapezoid, parallelogram, or rhombus. A sum of angles other than 360° can be realized, for example, by one or more sides of the rectangular gable face not extending in a straight line but being curved (e.g., as in the case of an arched quadrilateral or an arched polygon). A sum of angles greater than 360° can be realized by curving at least one side of the rectangular gable face outward. On the other hand, each angle of the bottom is preferably 90°, resulting in a rectangular, especially square, bottom shape. The gable surface design according to the present invention has several advantages. In addition to a more visually appealing shape, one edge (preferably the leading edge) of the gable surface is shorter than the other edge (especially the trailing edge), resulting in a narrower front side of the package, making it easier to grasp a package made from planar laminate with one hand. The design according to the present invention also provides the technical effect that the contact surface between adjacent packages (e.g., during transport or on a sales shelf) is smaller than in the case of rectangular packages, where the sides of the packages are in almost complete contact with each other. In other words, gaps or free spaces exist between adjacent packages, through which air can circulate. This has the advantage of reducing the risk of mold formation as a result of moisture. The sum of angles greater than 360° provides more space for the spout element. The rectangular gable face preferably has an angular sum of at least 370°, in particular at least 380°, preferably at least 390°. Angular sums in the range between 390° and 410° have proven to be advantageous.

[0020] According to a further development of the planar laminate, at least one of the plurality of rectangular gable faces is approximately trapezoidal. By designing the gable face of the laminate to be approximately trapezoidal, the gable of the package manufactured therefrom also has a trapezoidal shape. Unlike a rhombus, in which opposite sides are of equal length, the trapezoid shape has the advantage 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). This makes it easier to grasp a larger volume package from the front with one hand. A trapezoid is usually understood to be a quadrilateral with two parallel sides. Here, a trapezoidal quadrilateral should also be understood as a quadrilateral with multiple curved sides, if the four corners are connected by (imaginary) straight lines, and two of these straight lines are parallel to each other.

[0021] According to one configuration of the planar laminate, the rectangular gable surface has a curved leading edge adjacent to the front surface. The leading edge of the gable surface is preferably curved toward the front surface when viewed from the gable surface. This allows the gable surface to be enlarged. The enlarged gable surface, for example, facilitates the attachment of a spout element with a larger diameter. The curved leading edge of the gable also affects the shape of the front surface of the laminate, and thus also affects the shape of the front side of the package manufactured from the laminate. In particular, the leading edge curved toward the front surface allows the package to have an outwardly arched (convex) front side ("front panel"). In addition to an attractive appearance, this also has the technical advantage mentioned above of improving air circulation between multiple adjacently arranged packages, thereby reducing the risk of mold growth.

[0022] A further design of the flat laminate is to have the fibrous support layer of the laminate have a main fiber direction that runs approximately perpendicular to the longitudinal edges of the laminate, which run from the bottom to the gable face. Paper and cardboard are materials made from pulp fibers. In traditional (handmade) papermaking, the fibers are evenly distributed in all directions, but in machine-made papermaking, a targeted fiber direction can be achieved. Since the mechanical properties of paper differ in the direction of the fibers and in the direction transverse to the fiber direction (anisotropy), the fiber orientation can be used to obtain optimal material properties for each application. The main fiber direction should be approximately perpendicular to the two longitudinal edges of the laminate. The longitudinal edges run from the bottom area to the gable area (i.e., vertically in the case of a wrapper). This means that in the case of a wrapper, the main fiber direction runs circumferentially around the wrapper, i.e., around the sleeve surface. This has the advantage that in the case of creasing in the longitudinal folds of the package (which run transverse to the fiber direction), the cardboard fibers are broken. This results in a package with clearly defined folds during subsequent folding and forming, which in turn improves the stability of the package. In particular, in the case of compressive stresses on the package (e.g., in the case of stacking multiple layers on a pallet), the stability is significantly improved compared to packages with longitudinally aligned fibers, since higher compressive stresses are required before the package buckles.

[0023] The aforementioned object is also achieved by a packaging sleeve made of a laminate material for producing a package. The packaging sleeve comprises a sleeve surface having a front surface, a first side surface, a second side surface, a first rear surface, and a second rear surface; a bottom surface having a plurality of triangular and rectangular bottom surfaces; a gable surface having a plurality of triangular and rectangular gable surfaces; two secondary fold lines extending parallel to each other through the sleeve surface; and a longitudinal seam connecting two edge regions of the laminate material to form a tubular packaging sleeve that is open in both the bottom and gable surface regions, the bottom and gable surfaces being located at opposite ends of the sleeve surface, and the packaging sleeve being folded along both secondary fold lines. For the characteristics of the packaging sleeve already present in the planar laminate material, please refer to the corresponding description. The packaging sleeve has a longitudinal seam connecting two edge regions of the laminate material to form the tubular packaging sleeve. A longitudinal seam allows the production of a circumferentially closed, tubular packaging sleeve from a flat, mostly rectangular, blank made of laminated material. The longitudinal seam can be formed, for example, by gluing 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 and therefore has a front side and a back side as well as an inner side and an outer side.

[0024] According to the present invention, the packaging sleeve is characterized in that the sleeve surface has at least one stress relief surface arranged between the front surface and one of the two side surfaces. By providing at least one stress relief surface, the smoothest possible transition is achieved between the front surface and the side surfaces. As a result, the transition from the front surface to the two side surfaces is made via two less curved ("more obtuse") folds, so that the laminate can be folded or bent at a less steep angle. This reduces stress on the laminate, and in particular the risk of cracking or breaking of the fibers in the paper or cardboard layers of the laminate. Further features and advantages have already been described with reference to claim 1 and are applicable to the packaging sleeve from flat laminates as appropriate.

[0025] According to one configuration of the packaging sleeve, the packaging sleeve is 8 Since the packaging sleeve is made from one of the above-mentioned flat laminates, many of the properties and advantages of the flat laminate also apply to the packaging sleeve. Therefore, please refer to the corresponding embodiment.

[0026] According to a further design of the packaging sleeve, the laminate has at least one paper or cardboard layer that is covered at the edge of the longitudinal seam that extends inside the packaging sleeve. The paper or cardboard layer is preferably a support layer. The purpose of covering the paper or cardboard layer is to prevent any contact between the contents of the package and this layer. On the one hand, this serves to prevent leakage of liquid through the non-liquid-tight paper or cardboard layer, and on the other hand, serves to protect the contents of the package against contamination through the paper or cardboard layer (e.g., pulp fibers).

[0027] A further proposal for this configuration is to cover the paper or cardboard layer with a sealing strip and / or by folding the laminate in the region of the longitudinal seam. One possibility for achieving this covering involves attaching a separate sealing strip. The sealing strip can be made of the same material as the innermost layer of the laminate, for example, and can be glued or welded to this innermost layer. Another possibility for covering involves folding or folding the laminate in the region of the longitudinal seam. This ensures that only the innermost layer, and not all layers of the laminate, are exposed at the edge of the longitudinal seam that extends inside the packaging sleeve. However, the innermost layer must in any case be made of a material suitable for contact with the contents of the package.

[0028] In a further design of the packaging sleeve, the laminate is stripped in the region of the longitudinal seam. A "stripped" laminate is understood to mean a laminate in which the number of layers in the stripped region is less than in the remaining regions. In particular, in regions where several material layers overlap, the stripping has the advantage that the thickness does not increase significantly. The use of stripped laminate is therefore particularly advantageous when the laminate is to be folded or turned over, for example, in the region of the longitudinal seam.

[0029] The object stated at the outset is also achieved by a packaging made of laminate, which is produced from a flat laminate according to the preamble of claim 1 or which is produced according to claim 1. 9 The packaging is produced from a packaging sleeve according to the preamble of claim 1 and is sealed in the area of ​​the bottom and the area of ​​the gable. The packaging is characterized in that the sleeve surface has at least one stress relief surface arranged between the front surface and one of the two side surfaces. The provision of at least one stress relief surface ensures that the transition between the front surface and the side surfaces is as smooth as possible, thereby reducing the stresses experienced by the laminate. Other associated properties and advantages have already been described and can be applied accordingly to the packaging from the laminate and the packaging sleeve. The packaging can be produced directly from the flat laminate or from a packaging sleeve previously produced from the flat laminate.

[0030] According to one configuration of the package, at least one stress relief surface is adjacent to the rectangular bottom surface in the area of ​​the bottom surface and adjacent to the triangular gable surface in the area of ​​the gable surface, with the attendant properties and advantages (reduced stress on the laminate, improved air circulation) already described and applicable to packages from planar laminates and packaging sleeves as appropriate.

[0031] A further design of the package provides for a first sleeve fold line, preferably at least partially curved, between at least one stress relief surface and the adjacent front surface, with the attendant properties and advantages (simplification of manufacturing, increased rigidity, improved air circulation) already described and applicable to packages from planar laminates and packaging sleeves as appropriate.

[0032] A further design of the package provides for a second sleeve fold line, preferably at least partially curved, to be provided between at least one stress relief surface and the adjacent side surface, with the attendant properties and advantages (simplification of manufacturing, increased rigidity, improved air circulation) already described and applicable to packages from planar laminates and packaging sleeves as appropriate.

[0033] A further design of the package provides for a third sleeve fold line, preferably at least partially curved, between at least one side surface and the adjacent rear surface, with the attendant properties and advantages (simplification of manufacturing, increased rigidity, improved air circulation) already described and applicable to packages from planar laminates and packaging sleeves as appropriate.

[0034] According to a further configuration of the packaging, the packaging has a fin seam in the gable area, which is folded over in the direction of the front. This design allows for better drainage of water from the gable face, for example in the case of a sloping gable that slopes forward, since no open-top "pockets" are formed that can collect water. This design also allows for a larger space for a spout that is sealed from the inside.

[0035] A further design of the package provides that the package has a gable that is approximately trapezoidal. The trapezoidal shape of the gable has the advantage that, unlike a rhombus where opposite sides are of equal length, 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). This allows a larger volume package to be easily grasped from the front with one hand.

[0036] In a further configuration of the packaging, the packaging has a sloping gable. In particular, the gable of the packaging can be sloping forward, i.e., the cable height is lower in the front region of the packaging than in the rear region of the packaging. Due to the sloping gable, a spout element located in the gable region does not interfere with the stacking of the packaging, as compared to a packaging with a flat gable. This is due to the fact that in a packaging with a sloping gable, the spout element does not necessarily form the highest point of the packaging, as opposed to a packaging with a flat gable. In addition, better drainage of water from the gable surface can be achieved.

[0037] According to a further design of the packaging, finally, the packaging has a convex front area and / or a concave rear area. In particular, the packaging can have a convex front area in the upper area, especially in the upper half, and / or a concave rear area in the upper area, especially in the upper half. The combination of a convex front side and a concave rear side allows for space-saving placement of several packagings in front of or behind one another, despite their visually complex design.

[0038] In the following, the invention will be explained in more detail with reference to the drawings, which merely represent one preferred exemplary embodiment. [Brief explanation of the drawings]

[0039] [Figure 1A] 1 shows a plan view of a planar laminate known from the prior art for folding packaging sleeves; [Figure 1B] 1B shows a front view of a packaging sleeve known from the prior art, formed from the planar laminate shown in FIG. 1A; [Figure 1C] 1C shows the packaging sleeve of FIG. 1B in rear view. [Figure 1D] The packaging sleeve of Figures 1B and 1C is shown in its unfolded state. [Figure 1E] 1D shows the packaging sleeve of FIG. 1D with the bottom sealed. [Figure 1F]1C shows a package formed from the packaging sleeve shown in FIG. 1B after welding. [Figure 1G] 1F shows the package of FIG. 1F with the ears attached. [Figure 2A] 1 shows in plan view a planar laminate according to the invention for folding a packaging sleeve; [Figure 2B] 2B shows an enlarged view of a first region of the planar laminate of FIG. 2A. [Figure 3A] 2B shows a front view of a packaging sleeve according to the present invention formed from the planar laminate shown in FIG. 2A. [Figure 3B] 3B shows the packaging sleeve of FIG. 3A in rear view. [Figure 4A] 4 shows in perspective view a package according to the invention formed from the packaging sleeve shown in FIG. 3; [Figure 4B] 4B shows the package of FIG. 4A in front view. [Figure 4C] 4B shows the package of FIG. 4A in rear view. [Figure 4D] 4B shows the package of FIG. 4A in side view. DETAILED DESCRIPTION OF THE INVENTION

[0040] FIG. 1A shows in plan view a flat laminate 1 known from the prior art, from which a packaging sleeve can be formed. The flat laminate 1 can comprise multiple layers of different materials, such as paper, cardboard, plastic, or metal, especially aluminum. The laminate 1 has multiple fold lines 2. The purpose of the fold lines 2 is to facilitate folding of the laminate 1 and to divide it into multiple surfaces. The laminate 1 can be divided into a sleeve surface 3, a sealing surface 4, multiple bottom surfaces 5, and multiple gable surfaces 6. A packaging sleeve can be formed from the laminate 1 by folding the laminate 1 so that the sealing surface 4 is connected, especially welded, to the edge region opposite the sleeve surface 3. The sleeve surface 3 extends across the entire width of the laminate 1, except for the sealing surface 4. The laminate 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. Furthermore, secondary fold lines 7 extend through the junctions SB of three adjacent triangular faces 8 on the bottom face 5 and the junctions SG of three adjacent triangular faces 8 on the gable face 6. The sleeve face 3 is divided by the secondary fold lines 7 into one inner partial region 3A and two outer partial regions 3B. The inner partial region 3A is located between the two secondary fold lines 7, and the two outer partial regions 3B are adjacent to the two secondary fold lines 7 and are located outside the secondary fold lines 7.

[0041] The bottom surface 5 forms four corner points E5, and the gable surface 6 forms four corner points E6. The corner points E5 and E6 become corner points of the package manufactured from the laminate 1. Each corner point E5 of the bottom surface 5 corresponds to a corresponding corner point E6 of the gable surface 6. When the package is upright, the corresponding corner point E6 is located above the corner point E5. An angular axis EA extends through the two corresponding corner points E5 and E6. In a conventional rectangular package, the angular axis EA corresponds to the vertical fold of the package. Therefore, the laminate 1 shown in FIG. 1A has four angular axes EA. This is also true for packaging sleeves manufactured from the laminate 1 and packages manufactured from the packaging sleeves (for clarity, only one angular axis EA is shown in each case). Between each corner point E5 of the bottom surface 5 and each corner point E6 of the gable surface 6 associated therewith, i.e., along the corner axis EA, no fold line is provided.

[0042] FIG. 1B shows a front view of a packaging sleeve 9 known from the prior art, formed from the planar laminate 1 shown in FIG. 1A. In FIG. 1B, the regions of the packaging sleeve 9 already described with reference to FIG. 1A are labeled with corresponding reference numerals. The packaging sleeve 9 is produced from the laminate 1 in two steps. First, the laminate 1 is folded along two secondary fold lines 7. Then, two partial regions 3B (left) and 3B (right) of the sleeve surface 3 are connected, in particular welded, to one another in the region of the sealing surface 4, forming a longitudinal seam 10 (hidden in FIG. 1B). The packaging sleeve 9 thus has a circumferentially closed tubular structure with an opening in the region of the bottom surface 5 and an opening in the region of the gable surface 6. In the front view, the inner partial region 3A of the sleeve surface 3 is visible, bounded on both sides by the secondary fold lines 7. The remaining partial region 3B of the sleeve surface 3 is hidden in FIG. 1B, since it is located on the rear side of the packaging sleeve 9.

[0043] Figure 1C is a rear view of the packaging sleeve 9 of Figure 1B. In Figure 1C, the regions of the packaging sleeve 9 already described with reference to Figures 1A and 1B are labeled with corresponding reference numerals. In this rear view, both outer partial regions 3B of the sleeve surface 3 are visible. These outer partial regions 3B are connected to one another by longitudinal seams 10 and are separated on both sides by secondary fold lines 7. The inner partial region 3A of the sleeve surface 3 is hidden in Figure 1C, since it is located on the front side of the packaging sleeve 9.

[0044] FIG. 1D shows the packaging sleeve 9 of FIGS. 1B and 1C in its unfolded state. In FIG. 1D, the regions of the packaging sleeve 9 already described with reference to FIGS. 1A-1C are labeled with corresponding reference numerals. The unfolded state is achieved by folding the packaging sleeve 9 back along a secondary fold line 7 extending through the sleeve surface 3. The sleeve is folded back by approximately 180°. As a result of this folding back along the secondary fold line 7, the two partial regions 3A, 3B of the sleeve surface 3 adjacent to the secondary fold line 7 are no longer one above the other but are instead arranged in the same plane. Thus, the packaging sleeve 9 is folded along the secondary fold line 7 only in its flat state (FIGS. 1B, 1C). On the other hand, in the unfolded state (FIG. 1D), the packaging sleeve 9 (and thus the package produced from the packaging sleeve 9) are no longer folded along the secondary fold line 7. Hence the term "secondary" fold line 7.

[0045] Figure 1E shows the packaging sleeve 9 of Figure 1D with its bottom surface sealed. In Figure 1E, the regions of the packaging sleeve 9 already described with reference to Figures 1A to 1D are given corresponding reference numerals. The crimped state indicates that the two fold lines 2 in the region of the gable surface 6 have been crimped (as in Figure 1D). On the other hand, the bottom surface 5 has already been fully folded and welded, so that the packaging sleeve 9 has a sealed bottom surface.

[0046] FIG. 1F shows the packaging 11 formed from the packaging sleeve 9 shown in FIG. 1B after welding. In FIG. 1F, the regions of the packaging 11 already described with reference to FIGS. 1A-1E are labeled with corresponding reference numerals. The packaging 11 is shown in its welded state, i.e., after filling and sealing. After sealing, a fin seam 12 is formed in the region of the bottom surface 5 and in the region of the gable surface 6. In the region of the bottom surface 5, the fin seam 12 is already attached to the packaging 11, while in the region of the gable surface 6, the fin seam 12 still protrudes from the packaging 11. During crimping, a partial region of the gable surface 6 is folded outward (see FIG. 1E), forming a protruding region of excess material, also referred to as a "ear" 13. In a subsequent manufacturing step, the protruding region is attached to the packaging 11, for example, by gluing. In FIG. 1F, the ear 13 still protrudes from the packaging 11 and will be attached in a subsequent manufacturing step, for example, by gluing.

[0047] Figure 1G shows the package 11 of Figure 1F with the ears attached. In Figure 1G, areas of package 11 already described with reference to Figures 1A to 1F are given corresponding reference numerals. The upper ears 13, located in the area of ​​the gable surface 6, are folded downwards and attached flat to the sleeve surface 3 of package 11. The upper ears 13 are preferably glued or welded to the sleeve surface 3.

[0048] FIG. 2A shows in plan view a flat laminate 1' according to the invention for folding packaging sleeves. In FIG. 2A, the regions of the laminate 1' already described with reference to FIGS. 1A to 1G are given corresponding reference numerals. The base 5 of the laminate 1' can be divided into a number of triangular bases 5' and a number of rectangular bases 5". The triangular bases 5' form ears 13 (see FIG. 1F). The ears 13 are folded inwards or outwards and attached to the packaging, while the rectangular bases 5" determine the shape of the base. In the laminate 1' shown in FIG. 2A, the corners of the rectangular bases 5" are approximately right angles (α B=90°), the packaging produced from this laminate 1' also has a substantially rectangular, in particular substantially square, bottom surface. Similarly, the gable surface 6 of the laminate 1' can be divided into a plurality of triangular gable surfaces 6' and a plurality of rectangular gable surfaces 6". The triangular gable surfaces 6' form selvages 13 (see FIG. 1F). The selvages 13 are folded inward or outward and attached to the packaging. On the other hand, the rectangular gable surfaces 6" determine the shape of the gable. In the laminate 1' shown in FIG. 2A, the corners of the rectangular gable surfaces 6" are not right angles, but are slightly smaller than 90° (α G1 <90°) or slightly larger (α G2 >90°), resulting in a nearly trapezoidal shape. Therefore, the packaging manufactured from this laminate 1' also has a nearly trapezoidal gable. G1 is in the range between 80° and 90°, and the large gable face angle α G2 is preferably in the range between 90° and 100°. The side of the rectangular gable face 6″ adjacent to the front face 14 is also referred to as the front edge V. The front edge V is preferably curved towards the front face 14.

[0049] The sleeve surface 3 of the laminate 1' shown in Figure 2A has multiple fold lines dividing the sleeve surface 3 into multiple surfaces. The sleeve surface 3 comprises a front surface 14, a first rear surface 15A, a second rear surface 15B, a first side surface 16A, a second side surface 16B, a first stress relief surface 17A, and a second stress relief surface 17B. The front surface 14 is adjacent to the rectangular bottom surface 5" in the bottom region and adjacent to the rectangular trapezoidal gable surface 6" in the gable region. The front surface 14 is laterally adjacent to the first stress relief surface 17A and the second stress relief surface 17B. The two stress relief surfaces 17A, 17B are also adjacent to the rectangular base surface 5" of the bottom region (i.e., like the front surface 14). However, each of the two stress relief surfaces 17A, 17B is adjacent to one of the triangular gable surfaces 6' of the gable region. The two side surfaces 16A, 16B are adjacent to one of the triangular base surfaces 5' of the bottom region and are also adjacent to one of the triangular gable surfaces 6' of the gable region. Each of the two side surfaces 16A, 16B is laterally adjacent to one of the two stress relief surfaces 17A, 17B on its inner side and to one of the two stress relief surfaces 17A, 17B on its outer side. The first side surface 16A is adjacent to one of the rear surfaces 15A, 15B (the first side surface 16A is adjacent to the first rear surface 15A and the first stress relief surface 17A, and the second side surface 16B is adjacent to the second rear surface 15B and the second stress relief surface 17B). The two rear surfaces 15A, 15B are adjacent to the rectangular bottom surface 5" of the bottom surface region and adjacent to the rectangular gable surface 6" of the gable region. Each of the two rear surfaces 15A, 15B is laterally adjacent to one of the two side surfaces 16A, 16B on its inner side (the first rear surface 15A is adjacent to the first side surface 16A, and the second rear surface 15B is adjacent to the second side surface 16B).

[0050] In the planar laminate 1' shown in Figure 2A, the sleeve surface 3 has a plurality of sleeve fold lines 18', 18", 18'". The first sleeve fold line 18' laterally delimits the front surface 14 and forms the boundary between the front surface 14 and the two stress relief surfaces 17A, 17B. The two first sleeve fold lines 18' are preferably at least partially curved. The two second sleeve fold lines 18" form the boundary between the two stress relief surfaces 17A, 17B and the two side surfaces 16A, 16B. The two second sleeve fold lines 18" are also preferably at least partially curved. The two third sleeve fold lines 18'" form the boundaries between the two stress relief surfaces 17A, 17B and the two rear surfaces 15A, 15B. The two third sleeve fold lines 18'" are also preferably at least partially curved. The laminate 1' also has a paper or cardboard layer. The main fiber direction F of the paper or cardboard layer is oriented in the direction of the fibers of the surfaces 14, 15A, 15B, 16A, 16B, 16C, 16D, 16E, 16F, 16H, 16H, 16I, 16J, 16K ... 16B, 17A, 17B laterally (i.e. perpendicular to the two longitudinal edges L which extend from the bottom face 5 to the gable face 6 through the sleeve face 3) and therefore in a package manufactured from the laminate 1' extend in the circumferential direction of the package. Furthermore, the laminate 1' has a weakened zone 19 which can be used to define the position of a spout element. The weakened zone 19 can be designed as a coated hole or as a punched hole which passes through the laminate 1'.

[0051] Figure 2B shows an enlarged view of a first region of the laminate 1' of Figure 2A. In Figure 2B, the regions of the laminate 1' already described with reference to Figures 1A to 2A are given corresponding reference numerals. The first region of the laminate 1' shown in Figure 2B corresponds to the region of the gable face 6, and in particular the gable face angle α G1 , α G2 As already explained above, the corners of the rectangular gable surface 6" are not right angles, but slightly less than 90° (α G1 <90°) or slightly larger (α G2 >90°). Rear gable surface angle α (associated with the rear side of the package) G1 In this case, the deviation from a right angle is the angle α G1One of the two fold lines adjacent to each other does not extend perpendicular to the edge of the laminate 1', but is inclined at an angle β1 with respect to the vertical line S1 (α G1 This is due to the fact that the front gable surface angle α (associated with the front side of the package) G2 In the case of , the deviation from a right angle is due to two reasons. First, the angle α G2 One of the two fold lines adjacent to each other does not extend perpendicular to the edge of the laminate 1', but is inclined at an angle β2 with respect to the vertical line S2. G2 The leading edge V adjacent to the front edge 14 also does not extend in a straight line, but curves in the direction of the front surface 14. G2 The tangent line that contacts the leading edge V in the region of the laminate 1' is inclined at an angle γ with respect to the horizontal line W (which runs parallel to the upper edge of the laminate 1') (α G2 = 90° + β2 + γ). The angle β1 corresponds to the angle β2. Both angles are preferably in the range between 2° and 6°. Therefore, the angle α G1 may have an angle of, for example, about 86°. The angle γ is preferably in the range between 15° and 25°. Therefore, the angle α between the two front gable faces G2 may have an angle of, for example, about 113°. Because of the described design, and in particular because of the curved leading edge V, the sum of the angles of the square gable face 6″ is greater than 360° (2*α G1 +2*α G2 >360°).

[0052] FIG. 2C shows an enlarged view of a second region of the planar laminate 1' of FIG. 2A. In FIG. 2C, regions of the laminate 1' already described with reference to FIGS. 1A-2B are labeled with corresponding reference numerals. The second region of the laminate 1' shown in FIG. 2C corresponds to the region of the third sleeve fold line 18''' that separates the side faces 16A, 16B from the rear faces 15A, 15B. The third sleeve fold line 18''' located between the side faces 16A, 16B and the adjacent rear faces 15A, 15B has four sections I-IV. The first section I is adjacent to the bottom face 5 and extends linearly. The second section II is adjacent to the first section I and is curved (towards the rear faces 15A, 15B). As a result of this curvature, there is a maximum distance d between the third sleeve fold line 18''' and the vertical line S. II There exists a distance d II can be in the range between 0.5 mm and 2.5 mm. The third section III is adjacent to the second section II and is curved (towards the sides 16A, 16B). As a result of this curvature, there is a maximum distance d between the third sleeve fold line 18''' and the vertical line S. III There exists a distance d III can be in the range between 0.5 mm and 2.5 mm. Second section II and third section III therefore have opposite curvatures or directions of curvature. Fourth section IV is adjacent to third section III and gable face 6 and extends linearly. Third sleeve fold line 18''' is therefore partially linear (in section I adjacent bottom face 5 and section IV adjacent gable face 6) and partially curved (in the two "center" sections II, III).

[0053] FIG. 3A shows a front view of a packaging sleeve 9' according to the invention, formed from the planar laminate 1' shown in FIG. 2A. In FIG. 3A, the regions of the packaging sleeve 9' already described with reference to FIGS. 1A to 2C are labeled with corresponding reference numerals. The packaging sleeve 9' is produced from the laminate 1' in two steps. First, the laminate 1' is folded along the two secondary fold lines 7. Then, the first rear face 15A and the second rear face 15B are connected, in particular welded, to each other in the region of the sealing surface 4, forming a longitudinal seam 10 (hidden in FIG. 3A). The packaging sleeve 9' thus has a circumferentially closed tubular structure with an opening in the region of the bottom surface 5 and an opening in the region of the gable surface 6. This front view shows the front surface 14, the two stress-relief surfaces 17A, 17B, and the two side surfaces 16A, 16B (partially). The rear faces 15A, 15B are hidden in FIG. 3A since they are on the rear side of the packaging sleeve 9'.

[0054] Figure 3B shows the packaging sleeve 9' of Figure 3A in a rear view. In Figure 3A, regions of the packaging sleeve 9' already described with reference to Figures 1A to 3A are labeled with corresponding reference numerals. In this rear view, the two rear faces 15A, 15B are visible. The rear faces 15A, 15B are connected to each other by a longitudinal seam 10 and are separated on both sides by a third sleeve fold line 18'''. In addition, the two side faces 16A, 16B are (partially) visible. The front face 14 and the two stress relief faces 17A, 17B are hidden in Figure 3B, since they are on the front side of the packaging sleeve 9'.

[0055] 4A shows in a perspective view a packaging 20 according to the invention formed by the packaging sleeve 9' shown in FIG. 3. In FIG. 4A, the regions of the packaging 20 already described with reference to FIGS. 1A to 3B are given corresponding reference numerals. It is particularly clear in FIG. 4A that the stress relief surface 17A (as well as the stress relief surface 17B, not shown) is associated with the front side of the packaging 20 in the area of ​​the bottom, while the stress relief surface 17A is associated with the left side of the packaging 20 in the area of ​​the gable (and therefore the stress relief surface 17B, not shown, is associated with the right side of the packaging 20 in the area of ​​the gable). The stress relief surfaces 17A, 17B therefore "wrap" around the (imaginary) fold of the packaging 20 in the direction from the front side of the packaging 20 to one side of the packaging. Thus, the stress relief surfaces 17A, 17B form a transition from the front side of the package 20 (where the stress relief surfaces 17A, 17B are adjacent to the front face 14) to the two side faces of the package 20 (where the stress relief surfaces 17A, 17B are adjacent to the two side faces 16A, 16B). In FIG. 4A, it is also possible to see that the package 20 has a slanted gable ("diagonal gable") on which the screw cap 21 is located. The trapezoidal design of the gable is also visible. This trapezoidal design is realized by the rectangular gable surface 6" having multiple angles other than 90° (in FIG. 4A, the two small gable surface angles α adjacent to the rear faces 15A, 15B are different). G1 has an angle of less than 90°, and the two large gable face angles α adjacent to the front face 14 G2 have angles greater than 90°). Additionally, clearly visible in FIG. 4A is that first sleeve fold line 18', second sleeve fold line 18'', and third sleeve fold line 18''' are curved.

[0056] FIG. 4B shows the package 20 of FIG. 4A in a front view. In FIG. 4B, areas of package 20 already described with respect to FIGS. 1A-4A are labeled with corresponding reference numerals. The trapezoidal design of the gable is easily discernible, particularly in FIG. 4B. Additionally, the curved paths of the first sleeve fold line 18' and the second sleeve fold line 18" are clearly visible.

[0057] Figure 4C shows the package 20 of Figure 4A in a rear view. In Figure 4C, regions of the package 20 already described with reference to Figures 1A to 4B are labeled with corresponding reference numerals. In Figure 4C, the configuration of the rear side of the package 20, consisting of the two rear faces 15A, 15B, is particularly easily discernible. In addition, the curved path of the third sleeve fold line 18''' is clearly visible.

[0058] Finally, FIG. 4D shows the package 20 of FIG. 4A in a side view. In FIG. 4D, the regions of the package 20 already described with reference to FIGS. 1A-4C are labeled with corresponding reference numerals. In FIG. 4D, the configuration of the left side of the package 20, consisting of the two first side surfaces 16A and a portion of the first stress-relief surface 17A, is particularly easily recognizable. The (folded back) secondary fold line 7 also extends through the first side surface 16A. The same applies to the opposite right side of the package 20, not shown in FIG. 4D, since the two sides are identically designed (mirror-symmetrical). Additionally, in FIG. 4D, it is clearly recognizable that the upper region of the front side (right side in FIG. 4D) of the package 20 is curved convexly outward, while the upper region of the rear side (left side in FIG. 4D) is curved concavely inward. [Explanation of symbols]

[0059] 1, 1' flat laminate 2 fold lines 3, 3A, 3B sleeve surface 4 Sealing surface 5, 5', 5" bottom 6, 6', 6" gable side 7 Secondary fold lines 8 triangular surface 9, 9' packaging sleeve 10 Longitudinal seam 11 Packaging 12 Finseam 13 Ears 14 Front 15A, 15B 1st and 2nd rear 16A, 16B 1st and 2nd sides 17A, 17B First and second stress relief surfaces 18', 18", 18''' sleeve crease 19 Weakened Zones 20 Packaging 21 Screw Cap α B Base angle (of the crease line in the base area) α G1 , α G2 Gable face angle (of the gable area fold line) β1, β2 (relative to vertical lines S1, S2) inclination angles γ Inclination angle (relative to the horizontal line W) d II , d III Distance (between the third sleeve fold line 18'' and the vertical line S) EA Square Axis E5 (base 5) corner point E6 (Gable Face 6) Corner Point F Main fiber direction L longitudinal edge S, S1, S2 vertical line SB (of multiple triangular faces 8 on base 5) SG (contact points of multiple triangular faces 8 on gable face 6) V (Front edge of 6" square gable face) W horizontal line Sections I, II, III, IV (third sleeve fold line 18'')

Claims

1. A planar laminate (1') for producing a packaging body (20), the planar laminate (1') comprising: a polymer outer layer; - a polymer inner layer; a fibrous support layer disposed between the outer polymeric layer and the inner polymeric layer; Equipped with - said flat laminate (1') has a plurality of fold lines arranged and designed so that a closed package (20) can be produced by folding said flat laminate (1') along said fold lines and by connecting the seam faces of said flat laminate (1'); a sleeve surface (3) with a front surface (14), a first side surface (16A), a second side surface (16B), a first rear surface (15A) and a second rear surface (15B); a base (5) comprising a plurality of triangular bases (5') and a plurality of rectangular bases (5"); - a gable surface (6) comprising a plurality of triangular gable surfaces (6') and a plurality of rectangular gable surfaces (6"); and - said bottom surface (5) and said gable surface (6) are located at either end of said sleeve surface (3); - said sleeve surface (3) has at least one stress relief surface (17A, 17B) located between said front surface (14) and one of said two side surfaces (16A, 16B); a first sleeve fold line (18') is provided between at least one stress relief surface (17A, 17B) and the adjacent front surface (14); a second sleeve fold line (18") is provided between at least one stress relief surface (17A, 17B) and the adjacent side surface (16A, 16B); a third sleeve fold line (18''') that is at least partially curved is provided between at least one side surface (16A, 16B) and the adjacent rear surface (15A, 15B); In the planar laminate (1'), the third sleeve fold line (18''') has four sections (I, II, III, IV) including a first section (I) extending linearly adjacent to the bottom surface (5), a second section (II) curved adjacent to the first section (I), a third section (III) curved adjacent to the second section (II), and a fourth section (IV) extending linearly adjacent to the third section (III) and the gable surface (6), wherein the curved second section (II) and the curved third section (III) have opposite curvature directions; A flat laminate (1') characterized in that at least one stress relief surface (17A, 17B) is adjacent to a rectangular bottom surface (5") in the region of the bottom surface (5) and adjacent to a triangular gable surface (6') in the region of the gable surface (6).

2. 2. A flat laminate (1') according to claim 1, characterized in that the first sleeve fold line (18') is at least partially curved.

3. 3. A flat laminate (1') according to claim 1 or 2, characterized in that the second sleeve fold line (18") is at least partially curved.

4. A flat laminate (1') according to any one of claims 1 to 3, characterized by two secondary fold lines (7) extending parallel to one another through the sleeve surface (3).

5. Two small gable face angles (α Ｇ１ ) and two large gable face angles (α Ｇ２ 5. A flat laminate (1') according to any one of claims 1 to 4, characterized by at least one square gable face (6") having an angle greater than 360° and a sum of angles greater than 360°.

6. A flat laminate (1') according to any one of claims 1 to 5, characterized in that at least one of said rectangular gable faces (6") is approximately trapezoidal.

7. The flat laminate (1') according to any one of claims 1 to 6, characterized in that the rectangular gable face (6") has a curved leading edge (V) adjacent to the front face (14).

8. A planar laminate (1') according to any one of claims 1 to 7, characterized in that the fibrous support layer of the laminate (1') has a main fiber direction (F), which extends approximately perpendicular to the longitudinal edge (L) of the laminate (1') extending from the bottom surface (5) to the gable surface (6).

9. A packaging sleeve (9') made of laminated material for producing a package (20), a sleeve surface (3) with a front surface (14), a first side surface (16A), a second side surface (16B), a first rear surface (15A) and a second rear surface (15B); a base (5) comprising a plurality of triangular bases (5') and a plurality of rectangular bases (5"); - a gable surface (6) comprising a plurality of triangular gable surfaces (6') and a plurality of rectangular gable surfaces (6"); - two secondary fold lines (7) extending parallel to one another through said sleeve surface (3); a longitudinal seam (10) connecting the two edge regions of the laminate (1') to form a tubular packaging sleeve (9') open both in the region of the bottom face (5) and in the region of the gable face (6); Equipped with - said bottom surface (5) and said gable surface (6) are located at either end of said sleeve surface (3); - said packaging sleeve (9') is folded along both secondary fold lines (7); - said sleeve surface (3) has at least one stress relief surface (17A, 17B) located between said front surface (14) and one of said two side surfaces (16A, 16B); In the packaging sleeve (9'), A packaging sleeve (9'), characterized in that the packaging sleeve (9') is manufactured from a flat laminate (1') according to any one of claims 1 to 8.

10. A packaging sleeve (9') as described in claim 9, characterized in that the laminate has at least one paper or cardboard layer that is covered at the edge of the longitudinal seam (10) extending inside the packaging sleeve (9').

11. 11. Packaging sleeve (9') according to claim 10, characterized in that the paper or cardboard layer is covered by a sealing band and / or by folding the laminate in the area of ​​the longitudinal seam (10).

12. Packaging sleeve (9') according to any one of claims 9 to 11, characterized in that the laminate is peeled away in the region of the longitudinal seam (10).

13. A packaging body (20) made of laminated material, - the packaging (20) is made from a flat laminate (1') according to the preamble of claim 1 or the packaging (20) is made from a packaging sleeve (9') according to the preamble of claim 9, - said packaging (20) is sealed in the area of ​​said bottom face (5) and in the area of ​​said gable face (6); - said sleeve surface (3) has at least one stress relief surface (17A, 17B) located between said front surface (14) and one of said two side surfaces (16A, 16B); a first sleeve fold line (18') is provided between at least one stress relief surface (17A, 17B) and the adjacent front surface (14); a second sleeve fold line (18") is provided between at least one stress relief surface (17A, 17B) and the adjacent side surface (16A, 16B); a third sleeve fold line (18''') that is at least partially curved is provided between at least one side surface (16A, 16B) and the adjacent rear surface (15A, 15B); In the packaging body (20), the third sleeve fold line (18''') has four sections (I, II, III, IV) including a first section (I) extending linearly adjacent to the bottom surface (5), a second section (II) curved adjacent to the first section (I), a third section (III) curved adjacent to the second section (II), and a fourth section (IV) extending linearly adjacent to the third section (III) and the gable surface (6), wherein the curved second section (II) and the curved third section (III) have opposite curvature directions; A package (20) characterized in that at least one stress relief surface (17A, 17B) is adjacent to the rectangular bottom surface (5") in said region of the bottom surface (5) and adjacent to the triangular gable surface (6') in said region of the gable surface (6).

14. 14. A package (20) according to claim 13, characterized in that the first sleeve fold line (18') is at least partially curved.

15. 15. Packaging (20) according to claim 13 or 14, characterized in that the second sleeve fold line (18") is at least partially curved.

16. The packaging (20) according to any one of claims 13 to 15, characterized in that the packaging (20) has a fin seam (12) in the region of the gable that is folded over in the direction of the front surface (14).

17. Packaging (20) according to any one of claims 13 to 16, characterized in that the packaging (20) has a substantially trapezoidal gable.

18. Packaging (20) according to any one of claims 13 to 17, characterized in that the packaging (20) has an inclined gable.

19. The packaging (20) according to any one of claims 13 to 18, characterized in that the area of ​​the front surface (14) is convex and / or the area of ​​the rear surface (15A, 15B) is concave.

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