Packaging box with unloading panel

Abstract

The present invention relates to a packaging box (1) made of composite material, comprising: a bottom (B) having two front bottom corners (BV1, BV2) and two rear bottom corners (BH1, BH2); a mountain-shaped wall (G) having two front mountain-shaped wall corners (GV1, GV2) and two rear mountain-shaped wall corners (GH1, GH2); and a base (K) having a front panel (F), a first side panel (S1), a second side panel (S2), and a rear panel (R), wherein the bottom (B) and the mountain-shaped wall (G) are arranged on opposite sides of the base (K), and wherein the composite material comprises a polymer outer layer, a polymer inner layer, and a fiber-containing support layer disposed between the polymer outer layer and the polymer inner layer. In order to manufacture packaging boxes with more complex geometries without compromising the rigidity of the packaging boxes, it is proposed that the packaging box base (K) has at least one unloading panel (E1, E2) arranged between the front panel (F) and one of the two side panels (S1, S2).

Description

Technical Field

[0001] This invention relates to a packaging box made of composite material, comprising: a packaging box bottom having two front bottom corners and two rear bottom corners, a packaging box gable wall having two front gable corners and two rear gable corners, and a packaging box base having a front panel, a first side panel, a second side panel, and a rear panel, wherein the packaging box bottom and the packaging box gable wall are disposed on opposite sides of the packaging box base, and wherein the composite material comprises a polymer outer layer, a polymer inner layer, and a fiber-containing support layer disposed between the polymer outer layer and the polymer inner layer. Background Technology

[0002] Packaging (in its filled state: "box") can be manufactured in various ways and from a wide variety of materials. A widely adopted method involves creating cut pieces from the box material, which are then folded and other steps used to first form the outer skin of the box and finally the box itself. Alternatively, the box can be manufactured directly from the cut pieces, without the intermediate step of creating the outer skin. This method has the advantage of producing very flat cut pieces and outer skins, allowing for space-saving stacking. In this way, the cut pieces or outer skins can be manufactured at locations different from where the folding and filling of the outer skin occur. Composite materials are often used, such as composites made of multiple thin layers of paper, cardboard, plastic, and / or metal, especially aluminum. Such boxes are particularly widely used in the food industry.

[0003] Different packaging boxes made of composite materials are known from the prior art. These boxes initially had fairly simple geometries, such as squares, while increasingly complex geometries were pursued to provide customers with visually appealing and functionally advantageous packaging. Packaging boxes with more complex geometries made of composite materials are known, for example, by WO 02 / 04301 A1, WO 2011 / 154173 A1 and WO 2017 / 174210 A1.

[0004] The disadvantage of the packaging container described in WO 02 / 04301 A1 lies in the structure of the composite material. This is because WO 02 / 04301 A1 does not describe the composite material having a plastic inner layer and a plastic outer layer, and in particular, it does not describe a polymer inner layer or a polymer outer layer.

[0005] A known disadvantage of packaging, as specified in WO 2011 / 154173 A1, is that the edges in the outer sheath area have an angle of approximately 90° and therefore bend relatively strongly. This can lead to damage to the laminate, particularly tearing of the paper or cardboard layers of the laminate.

[0006] The disadvantage of composite packaging boxes known from WO 2017 / 174210 A1 is that the front of the box transitions into the sides without fold lines or creases, thus forming a common arch between the front and sides. While this continuous transition between the front and sides reduces the load on the laminate, it makes it difficult to shape the box precisely and also reduces the rigidity of the outer skin. Summary of the Invention

[0007] In this context, the object of the present invention is to design and improve the packaging box described at the beginning and in detail above, so as to enable the manufacture of packaging boxes with more complex geometries, especially liquid-sealed packaging boxes, without compromising the rigidity of the packaging box.

[0008] This objective is achieved in the packaging box provided in the embodiments of the present invention by having at least one unloading panel arranged between the front panel and one of the two side panels.

[0009] The packaging box according to the invention is made partly or entirely of a composite material. The planar composite material has multiple layers stacked and interconnected with each other, thus forming a planar composite. The planar composite material includes a polymer outer layer, a polymer inner layer, and a fiber-containing support layer disposed between the polymer outer layer and the polymer inner layer. The polymer inner layer and polymer outer layer provide liquid-sealing properties to the composite material because they are made of plastic. On the other hand, the fiber-containing support layer (preferably paper or cardboard) primarily serves to provide improved mechanical properties to the composite material, particularly improved rigidity. Additionally, a barrier layer is optionally provided, which is also disposed between the polymer outer layer and the polymer inner layer (preferably between the fiber-containing support layer and the polymer inner layer). The barrier layer can be made of, for example, aluminum, and is designed to prevent light and / or oxygen transmission. The packaging box can also have multiple folded edges, which are created during the manufacture of the packaging box by folding the planar composite material along fold lines. The packaging box first includes a box bottom having two front bottom corners and two rear bottom corners. Adjacent bottom corners are interconnected by lower box edges. The packaging box also includes a box gable wall with two front gable corners and two rear gable corners. Adjacent gable corners are connected to each other by upper packaging box edges. Furthermore, the packaging box includes a packaging box base having a front panel, a first side panel, a second side panel, and a rear panel. The front panel is preferably arranged opposite the rear panel, and the first side panel is preferably arranged opposite the second side panel. The bottom of the packaging box and the box gable walls are arranged on opposite sides of the packaging box base; when the packaging box stands upright on the bottom of the packaging box, the bottom of the packaging box is arranged below the packaging box base, and the box gable walls are arranged above the packaging box base.

[0010] According to the present invention, the packaging box base has at least one unloading panel disposed between the front panel and one of the two side panels. The unloading panel serves to create a transition between the front panel and the side panels as smoothly as possible. Preferably, the unloading panel extends over the entire height of the packaging box base, i.e., from the bottom of the packaging box to the gable wall of the packaging box, and thus separates the front panel from the two side panels. The technical advantage of the unloading panel is that the composite material requires less intense folding or bending compared to the 90° edges of a square packaging box, because the transition from the front panel to the two side panels is achieved through two less intensely bent (“blunt”) edges. This results in a less intense load on the composite material and, in particular, a lower risk of fiber tearing or breakage in the fiber-containing support layer (paper or cardboard layer) of the composite material. Preferably, the packaging box has two unloading panels disposed between the front panel and one of the two side panels. The unloading panel also enables, unlike a square packaging box, the creation of a gap or free space between adjacent packaging boxes in the area of ​​the unloading panel, through which air can circulate. The advantage of this is that it reduces the risk of mold growth due to moisture. Another advantage of the unloading panel is that the panels or surfaces adjacent to the unloading panel can be constructed to be narrower and thus more stable, thereby achieving increased gripping rigidity when dumping filled boxes.

[0011] According to one embodiment of the packaging box, the unloading panel and the front panel are adjacent to the same edge of the packaging box, particularly the edge of the bottom of the packaging box. More specifically, the unloading panel and the front panel may be jointly adjacent to the lower front edge of the packaging box.

[0012] According to another embodiment of the packaging box, the unloading panel and one of the two side panels are adjacent to the same edge of the packaging box, particularly the edge of the gable wall of the packaging box. Specifically, it can be specified that the unloading panel and one of the two side panels are jointly adjacent to the upper lateral edge of the packaging box. This design preferably makes the unloading panel and the adjacent front panel and / or side panel (except in the area where the panels meet at the bottom edge or the gable wall edge) extend at an angle to each other. In other words, the unloading panel corresponds to the front panel of the packaging box in its lower region and to the side panel of the packaging box in its upper region. Thus, the unloading panel is completely "wound" around the (hypothetical) vertically extending edge of the packaging box. This design of the unloading panel has the advantage that the previously described technical effects (reduced load on the composite material, improved air circulation) occur not only on one side of the packaging box but also on both sides.

[0013] According to another embodiment of the packaging box, a first outer skin fold line is provided between at least one unloading panel and its adjacent front panel, which is preferably at least partially curved. By providing a fold line between the unloading panel and the front panel, a folded edge with a defined direction is achieved, which facilitates the manufacture of the packaging box. The folded edge also improves the structural characteristics of the packaging box, particularly its rigidity, compared to a curved shape without edges. Furthermore, the curved direction of the outer skin fold line makes it easier to create convex or concave surfaces or panels, thereby creating an air gap between adjacent packaging boxes that improves air circulation. It can be specified that a first outer skin fold line is provided between each of the two unloading panels and its adjacent front panel, and this first outer skin fold line is preferably at least partially curved. Furthermore, it can be specified that the first outer skin fold line extends in a continuously curved manner.

[0014] This implementation further specifies that the first outer skin fold line terminates only at one of its two ends at one of the two front chamfered corners or one of the two front bottom corners, and at the other end does not terminate at a chamfered corner or bottom corner. By having one end of the first outer skin fold line terminate at or adjacent to one of the two front chamfered corners or one of the two front bottom corners, increased rigidity of these corners of the packaging box is achieved. By ensuring that the other end of the first outer skin fold line does not terminate at or adjacent to a corner of the packaging box, a smooth and as flat as possible transition between the two surfaces or panels separated by the first outer skin fold line can be achieved. For example, the other end of the first outer skin fold line can be specified to terminate at or adjacent to a corner edge of the packaging box, thereby ensuring that the two surfaces or panels separated by the first outer skin fold line and converging at the corner edge of the packaging box are, in any case, partially and substantially in one plane.

[0015] According to another embodiment of the packaging box, a second outer skin fold line is provided between at least one unloading panel and its adjacent side panel, the second outer skin fold line preferably being at least partially curved. As previously explained in conjunction with the first outer skin fold line, the second outer skin fold line also enables folded edges with a defined orientation, which simplifies the manufacture of the packaging box. The folded edges also improve the structural characteristics of the packaging box, particularly its rigidity, compared to a shape without curved edges. Furthermore, the curved orientation of the outer skin fold line makes it easier to create convex or concave surfaces or panels, thereby creating air gaps between adjacent packaging boxes that improve air circulation. It can be specified that a second outer skin fold line is provided between each of the two unloading panels and its adjacent side panel, the second outer skin fold line preferably being at least partially curved. Furthermore, it can be specified that the second outer skin fold line extends in a continuously curved manner.

[0016] This implementation further specifies that the second outer skin fold line terminates only at one of its two ends at one of the two front gable corners or one of the two front bottom corners, and at the other end does not terminate at either a gable corner or a bottom corner. As previously described with respect to the first outer skin fold line, increased rigidity of the box corner can be achieved if the end of the second outer skin fold line terminates or is adjacent to that corner. By ensuring that the other end of the second outer skin fold line does not terminate at or is adjacent to a box corner, a smooth and as flat as possible transition between the two surfaces or panels separated by the second outer skin fold line can be achieved. For example, the other end of the second outer skin fold line can be specified to terminate or be adjacent to a box edge, thereby ensuring that the two surfaces or panels separated by the second outer skin fold line and converging at the box edge are, in any case, partially and substantially in one plane.

[0017] According to another embodiment of the packaging box, a third outer skin fold line is provided between at least one side panel and its adjacent rear panel, which is preferably at least partially curved. As previously explained in conjunction with the first and second outer skin fold lines, the third outer skin fold line also achieves a folded edge with a defined orientation, which simplifies the manufacture of the packaging box. The folded edge also improves the structural characteristics of the packaging box, particularly its rigidity, compared to a shape without curved edges. Furthermore, the curved orientation of the outer skin fold line makes it easier to create convex or concave surfaces or panels, thereby creating an air gap between adjacent packaging boxes that improves air circulation. It can be specified that a third outer skin fold line is provided between each of the two side panels and its adjacent rear panel, which is preferably at least partially curved. Furthermore, it can be specified that the third outer skin fold line extends in a continuously curved manner.

[0018] Further, this design proposes that the third outer skin fold line terminates at one of the two rear gable corners and at the other of the two rear bottom corners. By having the third outer skin fold line terminate at or adjacent to either the gable or bottom corner, increased rigidity is achieved at these corners of the packaging box.

[0019] Further, the third outer skin fold line is proposed to have multiple segments that are adjacent to the side panels and the rear panel respectively, and at least one segment is curved and at least one segment is straight. By providing a fold line between the side panel and the adjacent rear panel, a folded edge with a defined direction is achieved, which simplifies the manufacture of the packaging box. The folded edge also improves the structural characteristics of the packaging box, particularly its rigidity, compared to a shape without curved edges. Furthermore, the curved direction of the outer skin fold line makes it easier to create convex or concave surfaces or panels, thereby creating an air gap between adjacent packaging boxes that improves air circulation. The manufacture of the packaging box is simplified by providing straight segments in addition to the curved segments in the third outer skin fold line. It can be specified that a third outer skin fold line is provided between each of the two side panels and the adjacent rear panel, and this third outer skin fold line has multiple segments that are adjacent to a side panel and a rear panel respectively, and at least one of these segments is curved and at least one of these segments is straight. Furthermore, it can be specified that the third outer skin fold line has at least two bends oriented in different directions, namely, a first bend along the direction of the side panel and a second bend (“arc edge”) along the direction of the adjacent rear panel. This results in further improvement in air circulation between adjacent boxes.

[0020] According to another embodiment of the packaging box, the sections of the third outer skin fold line adjacent to the bottom of the packaging box and the sections adjacent to the gable wall of the packaging box are straight. Using straight sections adjacent to the bottom of the packaging box and the gable wall of the packaging box is particularly advantageous because the bottom and gable wall of the packaging box can be made with simpler tools in this way.

[0021] According to another embodiment of the packaging box, at least two sections of the third outer skin fold line have opposite bending directions. Specifically, one section bends towards the rear panel, and the other section bends towards the side panel. In this way, a packaging box with convex and concave surfaces or panels can be achieved. Preferably, the section of the third outer skin fold line bending towards the side panel is located above the section of the third outer skin fold line bending towards the rear panel. This results in a wide, concave back side of the packaging box in the upper region, particularly in the upper half. Since the packaging box preferably has a narrow, convex front side in its upper region, particularly the upper half, multiple packaging boxes can be placed sequentially in a space-saving manner, thus achieving good space utilization. Furthermore, the opposite bending directions allow the reduced filling volume due to one bending direction to be compensated again by the other bending direction, so that the height of the packaging box can remain constant for a given packaging box volume.

[0022] According to another embodiment of the packaging box, the box has fin-shaped seams in the area of ​​the gable wall that fold towards the front panel. This design, for example, allows moisture to flow better away from the gable wall when it slopes forward, as it avoids creating an upward-opening "bag" where moisture could accumulate. Similarly, this embodiment allows for more space for an internally sealed pouring spout.

[0023] According to another embodiment of the packaging box, the gable wall of the packaging box is generally trapezoidal. The advantage of the trapezoidal shape of the packaging box's gable wall is that one of the two parallel sides or edges (preferably the front edge of the gable wall) is shorter than the opposite side or edge (preferably the rear edge of the gable wall), unlike a rhombus where the opposite sides are of equal length. This allows even packaging boxes with a large volume to be easily grasped with one hand from the front.

[0024] Another embodiment of the packaging box specifies that the gable wall of the packaging box is a sloping gable wall. Specifically, it can be specified that the gable wall slopes downwards, meaning it is lower in the front region of the packaging box than in the rear region. This sloping orientation of the gable wall allows the tipping elements arranged in the gable wall region to have less impact on the stacking of the packaging boxes compared to boxes with flat gable walls. This is because, unlike boxes with flat gable walls, the tipping elements do not necessarily form the highest point of the packaging box. Furthermore, it allows for better moisture dissipation from the gable wall.

[0025] According to another embodiment of the packaging box, the gable wall of the packaging box has a curved front edge adjacent to the front panel. Preferably, the front edge of the gable wall of the packaging box is curved towards the front panel. In this way, the area of ​​the gable wall of the packaging box can be increased, which, for example, makes it easier to install a tipping element with a larger diameter. The curved front edge of the gable wall of the packaging box also affects the shape of the front panel of the packaging box. In particular, the front edge curved towards the front panel can achieve an outwardly arched (convex) front panel of the packaging box. In addition to an attractive appearance, this also has the technical advantage of improving air circulation between adjacent packaging boxes, as previously described, which reduces the risk of mold growth.

[0026] According to another embodiment of the packaging box, the front panel is convexly shaped and / or the rear panel is at least partially concavely shaped. Specifically, it can be specified that the packaging box is convexly shaped in the upper region, particularly in the upper half of the front panel region, and / or concavely shaped in the upper region, particularly in the upper half of the rear panel region. Through the combination of the convex front and concave rear sides, the packaging box can be arranged in a space-saving manner, despite its complex appearance.

[0027] In this embodiment, it is also proposed that the front panel has its maximum convex arch above half the height of the box body. By arching the front panel particularly far outward or forward in the upper region, the front panel can be constructed to be particularly narrow in the upper region without reducing the volume of the box relative to a square box; the forward arch thus compensates for the lateral narrowing. Due to the lateral narrowing, the box can be easily grasped from the front, for example, so that it can be removed from the sales shelf with one hand.

[0028] According to another embodiment of the packaging box, the two front gable corners have two large gable angles, each greater than 90°. Alternatively or additionally, the two rear gable corners can be specified to have two small gable angles, each less than 90°. By using angles not equal to 90°, a packaging box gable shape different from a rectangle or square is achieved. For example, a quadrilateral packaging box gable with two small (<90°) and two large (>90°) gable angles can be obtained by using trapezoids, parallelograms, or rhombuses. In this way, packaging box gables with edges of different lengths can be achieved, thereby, for example, achieving short front edges, through which the packaging box can be gripped particularly easily from the front.

[0029] Finally, according to another embodiment of the packaging box, the four gable angles have a sum greater than 360°. Angles not equal to 360° can be achieved, for example, by having one or more sides or edges of the quadrilateral packaging box's gable extend in a curved manner rather than straight (e.g., in the case of rounded polygons or arc polygons). Angles greater than 360° can be achieved by having at least one side or edge of the quadrilateral packaging box's gable curve outwards. The bottom angle is preferably 90°, resulting in a rectangular, particularly square, bottom for the packaging box. This design of the packaging box's gable has several advantages. Besides a more aesthetically pleasing shape, it achieves the technical effect that the packaging box can be more easily gripped 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 box narrower at the front. Furthermore, this design results in a technical effect where the contact area between side-by-side boxes (e.g., during transport or on retail shelves) is smaller than that of square boxes where the side panels almost completely contact each other. In other words, gaps or free spaces are maintained between the side-by-side boxes, through which air can circulate. This has the advantage of reducing the risk of mold growth due to moisture. Additionally, the angles, greater than 360°, allow for more space for the tipping element. Preferably, the quadrilateral box's gable walls have angles of at least 370°, particularly at least 380°, and preferably at least 390°. Angles in the range of 390° to 410° have proven advantageous. Attached Figure Description

[0030] The invention will now be described in detail with the aid of the accompanying drawings, which show only one preferred embodiment. The drawings show:

[0031] Figure 1A A perspective view of the packaging box according to the present invention is shown.

[0032] Figure 1B It shows Figure 1A Front view of the packaging box in the middle.

[0033] Figure 1C It shows Figure 1A The rear view of the packaging box.

[0034] Figure 1D It shows Figure 1A Side view of the packaging box in the middle.

[0035] Figure 2A It shows Figure 1A An enlarged view of the first area of ​​the packaging box, and

[0036] Figure 2BIt shows Figure 1A An enlarged view of the second area of ​​the packaging box. Detailed Implementation

[0037] Figure 1A A perspective view of the packaging box 1 according to the present invention is shown. Figure 1B Show Figure 1A Front view of packaging box 1 Figure 1C Showing the rear view, and Figure 1D A side view is shown. The packaging box 1 has a quadrilateral bottom B with two front bottom corners BV1 and BV2 and two rear bottom corners BH1 and BH2. Furthermore, the packaging box 1 has a quadrilateral gable wall G with two front gable corners GV1 and GV2 and two rear gable corners GH1 and GH2. Additionally, the packaging box 1 has a packaging box base K, which includes a front panel F, a first side panel S1, a second side panel S2, and a rear panel R. The packaging box base K is arranged between the bottom B and the gable wall G, such that the bottom B and the gable wall G are arranged on opposite sides of the packaging box base K and form the outer peripheral surface of the packaging box 1. The packaging box 1 is partially or entirely made of a composite material comprising a polymer outer layer, a polymer inner layer, and a fiber-containing support layer disposed between the polymer outer layer and the polymer inner layer. The fiber-containing support layer may, for example, be a layer made of paper or cardboard. Within the area of ​​the gable wall G, the packaging box 1 has a fin-shaped seam 2 that flips towards the front panel F. Within the area of ​​the gable wall G, the packaging box 1 also includes two ears 3, one of which abuts against the first side panel S1, and the second ear 3 abuts against the second side panel S2. In the area of ​​the rear panel R, the packaging box 1 has a longitudinal seam 4. The gable wall G is generally trapezoidal and constructed as a sloping gable wall (like a single-sloped roof). The gable wall G has a front edge V adjacent to the front panel F, which curves towards the front panel F. The shape of the gable wall will combine... Figure 2A Let's have a more detailed discussion.

[0038] Figures 1A to 1DThe packaging box 1 shown has a packaging box base K with two unloading panels E1 and E2. The first unloading panel E1 is disposed between the front panel F and the first side panel S1, and the second unloading panel E2 is disposed between the front panel F and the second side panel S2. Therefore, the unloading panels E1 and E2 separate the front panel F from the two side panels S1 and S2, forming a transition between them. The first unloading panel E1 and the second unloading panel E2 are partially coplanar with the front panel F in the region adjacent to the bottom B of the packaging box. However, the first unloading panel E1 is partially coplanar with the first side panel S1 in the region adjacent to the gable wall G of the packaging box; similarly, the second unloading panel E2 is partially coplanar with the second side panel S2 in the region adjacent to the gable wall G of the packaging box. Therefore, the two unloading panels E1 and E2 correspond to different sides of the packaging box 1 in their lower region and in their upper region; therefore, the two unloading panels E1 and E2 "wrap" around the imaginary edge of the packaging box from the front panel F toward one of the two side panels S1 and S2.

[0039] exist Figures 1A to 1D In the packaging box 1 shown, a continuously curved first outer skin fold line M1 is provided between the front panel F and the first unloading panel E1. Similarly, a continuously curved first outer skin fold line M1 is provided between the front panel F and the second unloading panel E2. The upper ends of the two first outer skin fold lines M1 are adjacent to the two front gable corners GV1 and GV2. However, the two lower ends of the two first outer skin fold lines M1 are not adjacent to the two front bottom corners BV1 and BV2, but are adjacent to the lower front packaging box edge located between them. In the packaging box 1, a continuously curved second outer skin fold line M2 is also provided between the first unloading panel E1 and the first side panel S1 adjacent to it. Similarly, a continuously curved second outer skin fold line M2 is provided between the second unloading panel E2 and the second side panel S2 adjacent to it. The lower ends of the two second outer skin fold lines M2 are adjacent to the two front bottom corners BV1 and BV2. However, the two second outer skin fold lines M1, with their two upper ends not adjacent to the two front mountain-shaped corners GV1, GV2, but rather adjacent to the upper side of the packaging box edge located between the front mountain-shaped corners GV1, GV2 and the rear mountain-shaped corners GH1, GH1. Figures 1A to 1D In the packaging box 1 shown, a third outer skin fold line M3 is provided between the first side panel S1 and the adjacent rear panel R. Similarly, a third outer skin fold line M3 is provided between the second side panel S1 and the adjacent rear panel R. The third outer skin fold line M3 has one end adjacent to one of the two rear gable corners GH1 and GH2, and its other end adjacent to one of the two rear bottom corners BH1 and BH2. The precise orientation of the third outer skin fold line M3 will combine... Figure 2B Further detailed description.

[0040] In the side view ( Figure 1D It is particularly clear from the image that the front panel F is convexly shaped, i.e., arched outwards. The front panel F has its maximum convex arch above half the height of the packaging box base K. Similarly, in... Figure 1D As can be seen, the rear panel is concave in shape, that is, it arches inward.

[0041] Figure 2A Show Figure 1A An enlarged view of the first area of ​​packaging box 1. Packaging box 1 has been assembled. Figures 1A to 1D The area described is in Figure 2A The corresponding illustrations are provided. The packaging box contains... Figure 2A The first area shown relates to the area of ​​the gable wall G of the packaging box, and in particular to the front gable wall corner GV2 (and the gable wall angle α here). GV2 The area and the back gable corner GH1 (and the gable angle α here) GH1 The area of ​​) . Due to symmetry, for the other half of the mountain-shaped wall G of the packaging box ( Figure 2A The same applies to (not shown in the image). The four corners of the gable wall G of the packaging box are not right angles: the two front gable wall corners GV1 and GV2 have a front gable wall angle α that is slightly greater than 90°. GV1 α GV2 (α GV1 α GV2 > 90°), and the two back-mountain wall corners GH1 and GH2 have a back-mountain wall angle α that is slightly less than 90°. GH1 α GH2 (α GH1 α GH2 < 90°). For the back mountain wall angle α GH1 α GH2 The deviation from the right angle is due to the angle α of the adjacent mountain wall. GH1 α GH2 The upper side edge of the packaging box does not extend perpendicularly to the upper rear edge of the packaging box, but is inclined at an angle β1(α) relative to the vertical line SR1. GH1 =α GH2 =90°-β1). For the front hillside angle α GV1 α GV2 In general, the deviation from the right angle has two reasons: First, the angle α of the front mountain wall GV1 α GV2 The edges of the adjacent upper side packaging boxes do not run perpendicular to the edges of the rear packaging boxes, but are inclined at an angle β2 relative to the vertical line SR2. Secondly, similarly, the angle α of the front mountain wall... GV1 α GV2The adjacent front edge V does not extend straight, but curves towards the front panel F, wherein the front edge V (or at the front gable corners GV1, GV2, or at the gable angle α here) GV1 α GV2 The tangent to the front edge V in the region of contact is inclined at an angle γ relative to the horizontal line WR (parallel to the extension of the rear edge of the upper packaging box) (α). GV1 =α GV2 =90° + β2 + γ). Angle β1 equals angle β2; the two angles are preferably in the range between 2° and 6°. Therefore, the two back-mountain wall angles α GH1 α GH2 For example, it can be in the range of approximately 86°. The angle γ is preferably in the range between 15° and 25°. Therefore, the two fore-beam wall angles α... GV1 α GV2 For example, it can be within a range of approximately 113°. From the design described, especially from the curved front edge V, the angle of the quadrilateral packaging box's gable wall G is greater than 360° (α). GV1 +α GV2 +α GH1 +α GH2 > 360°).

[0042] Figure 2B Show Figure 1A An enlarged view of the second area of ​​packaging box 1. Packaging box 1 has been assembled. Figures 1A to 2A The area described is in Figure 2B The corresponding illustrations are marked on the packaging box 1. Figure 2B The second region shown relates to the area where the third outer skin fold line M3 separates the rear panel R from the two side panels S1, S2 (in Figure 2B Only one of the two third outer skin fold lines M3 is shown; the other third outer skin fold line M3 is correspondingly applicable due to symmetry. The third outer skin fold line M3, located between the rear panel R and the adjacent side panels S1, S2, has four segments I-IV: the first segment I is adjacent to the bottom B of the packaging box and extends straight. The second segment II is adjacent to the first segment I and extends in a curved manner (towards the rear panel R). Due to this curvature, the maximum spacing d is created between the third outer skin fold line M3 and the vertical line SR3. II This spacing 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 (towards the first side panel S1). Due to this curvature, the maximum spacing d is generated between the third outer skin fold line M3 and the vertical line SR3. IIIThe maximum spacing can be between 0.5 mm and 2.5 mm. Sections II and III therefore have opposite curvatures or bending directions. Section IV is adjacent to Section III and the box gable wall G and extends in a straight line. Therefore, the third outer skin fold line M3 extends in a straight line in some sections (in section I adjacent to the box bottom B and in section IV adjacent to the box gable wall G) and curves in some sections (in the two “middle” sections II and III).

[0043] Explanation of reference numerals in the attached figures

[0044] 1 Packaging box

[0045] 2 Fin-shaped seams

[0046] 3 Ears

[0047] 4 longitudinal joints

[0048] α GV1 α GV2 Angle of the front gable wall

[0049] α GH1 α GH2 Angle of the back mountain wall

[0050] β1, β2: Inclination angle

[0051] γ: Inclination angle

[0052] B: Bottom of the packaging box

[0053] BV1, BV2: Front bottom corner

[0054] BH1, BH2: Back bottom corner

[0055] d II d III :spacing

[0056] E1, E2: Uninstall panel

[0057] F: Front panel

[0058] G: Packaging box with gable wall

[0059] GV1, GV2: Front mountain-shaped corner

[0060] GH1, GH2: Back mountain-shaped corner

[0061] K: Packaging box base

[0062] M1: First outer skin fold line

[0063] M2: Second outer skin fold line

[0064] M3: Third outer skin fold line

[0065] R: Rear panel

[0066] S1, S1: Side panel

[0067] SR1, SR2, SR3: Perpendicular lines

[0068] V: (Front edge of the gable wall G of the packaging box)

[0069] WR: Horizontal line

[0070] Sections I, II, III, and IV (of the third outer skin fold line M3)

Claims

1. A packaging box (1) made of composite material, comprising: The bottom (B) of the packaging box has two front bottom corners (BV1, BV2) and two rear bottom corners (BH1, BH2). The packaging box has a gable wall (G) with two front gable corners (GV1, GV2) and two rear gable corners (GH1, GH2), and The packaging box base (K) has a front panel (F), a first side panel (S1), a second side panel (S2), and a rear panel (R). The bottom (B) and the gable wall (G) of the packaging box are arranged on opposite sides of the base (K) of the packaging box. The packaging box base (K) has at least one unloading panel (E1, E2), which is arranged between the front panel (F) and one of the two side panels (S1, S2). Its features are, The composite material includes a polymer outer layer, a polymer inner layer, and a fiber-containing support layer disposed between the polymer outer layer and the polymer inner layer. The unloading panels (E1, E2) and the front panel (F) are adjacent to the lower front packaging box edge, and the unloading panels (E1, E2) and one of the two side panels (S1, S2) are adjacent to the upper lateral packaging box edge. A first outer skin fold line (M1) is provided between at least one unloading panel (E1, E2) and the adjacent front panel (F). The first outer skin fold line (M1) is at least partially curved. The first outer skin fold line (M1) terminates only at one of its two ends at one of the two front gable corners (GV1, GV2) or one of the two front bottom corners (BV1, BV2), and does not terminate at the gable corner (GV1, GV2, GH1, GH2) or bottom corner (BV1, BV2, BH1, BH2) at its other end.

2. The packaging box (1) according to claim 1, Its features are, The unloading panels (E1, E2) and the front panel (F) are adjacent to the same edge of the packaging box (1), which is the edge of the bottom (B) of the packaging box.

3. The packaging box (1) according to claim 1 or 2, Its features are, One of the unloading panels (E1, E2) and the two side panels (S1, S2) is adjacent to the same edge of the packaging box (1), which is the edge of the gable wall (G) of the packaging box.

4. The packaging box (1) according to claim 1, Its features are, A second outer skin fold line (M2) is provided between at least one unloading panel (E1, E2) and an adjacent side panel (S1, S2), the second outer skin fold line being at least partially bent.

5. The packaging box (1) according to claim 4, Its features are, The second outer skin fold line (M2) terminates only at one of its two ends at one of the two front gable corners (GV1, GV2) or one of the two front bottom corners (BV1, BV2), and at the other end it does not terminate at the gable corner (GV1, GV2, GH1, GH2) or the bottom corner (BV1, BV2, BH1, BH2).

6. The packaging box (1) according to claim 1, Its features are, A third outer skin fold line (M3) is provided between at least one side panel (S1, S2) and the adjacent rear panel (R), the third outer skin fold line being at least partially bent.

7. The packaging box (1) according to claim 6, Its features are, The third outer skin fold line (M3) terminates at one of the two rear mountain-shaped corners (GH1, GH2) with one of its two ends, and at the other end with one of the two rear bottom corners (BH1, BH2).

8. The packaging box (1) according to claim 6, Its features are, The third outer skin fold line (M3) has multiple segments (I, II, III, IV), each segment being adjacent to a side panel (S1, S2) and the rear panel (R), and at least one of the multiple segments (II, III) is curved, and at least one of the multiple segments (I, IV) is straight.

9. The packaging box (1) according to claim 6, Its features are, The third outer skin fold line (M3) is straight in the section (I) adjacent to the bottom (B) of the packaging box and in the section (IV) adjacent to the gable wall (G) of the packaging box.

10. The packaging box (1) according to claim 6, Its features are, At least two segments (II, III) of the third outer skin fold line (M3) have opposite bending directions.

11. The packaging box (1) according to claim 1, Its features are, The packaging box (1) has a fin-shaped seam (2) that flips toward the front panel (F) in the area of ​​the packaging box gable wall (G).

12. The packaging box (1) according to claim 1, Its features are, The packaging box has a trapezoidal gable wall (G).

13. The packaging box (1) according to claim 1, Its features are, The packaging box gable wall (G) is a sloping gable wall.

14. The packaging box (1) according to claim 1, Its features are, The packaging box's gable wall (G) has a curved front edge (V) adjacent to the front panel (F).

15. The packaging box (1) according to claim 1, Its features are, The front panel (F) is convexly shaped and / or the rear panel (R) is at least partially concavely shaped.

16. The packaging box (1) according to claim 15, Its features are, The front panel (F) has its maximum convex arch above half the height of the packaging box base (K).

17. The packaging box (1) according to claim 1, Its features are, The two front gable corners (GV1, GV2) have two large gable angles (α) greater than 90° respectively. GV1 α GV2 ).

18. The packaging box (1) according to claim 1, Its features are, The two rear gable corners (GH1, GH2) have two small gable corner angles (α) less than 90° each. GH1 α GH2 ).

19. The packaging box (1) according to claim 1, Its features are, The two front gable corners (GV1, GV2) have two large gable angles (α) greater than 90° respectively. GV1 α GV2 The two rear gable corners (GH1, GH2) have two small gable angles (α) less than 90° each. GH1 α GH2 The two large gable angles (α) are both greater than 90°. GV1 α GV2 ) and the two small gable angles (α) that are each less than 90° GH1 α GH2 It has an angle greater than 360°.

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