Folding box, in particular a pizza box

Abstract

The invention relates to a one-piece folding box (1) with a base part (10) and a lid part (12), which are movable relative to each other via a film hinge (11). The base part (10) has a base-part main surface body (10a). A hinge side wall (16) and a plurality of base-part side walls (15) extend upwards from a side edge of the base-part main surface body (10a). The lid part (12) comprises a lid-part main surface body (12a), which has the same shape as the base-part main surface body (10a). Located at the side edges of the lid-part main surface body (12a) are the film hinge (11) and a plurality of lid-part side walls (17), wherein a folding edge (55) is formed between each lid-part side wall (17) and the lid-part main surface body (12a), wherein, in the pre-assembled state of the folding box (1), the base-part side walls (15) and the hinge side wall (16) are fixed relative to the base-part main surface body (10a), whereas, during closure of the folding box (1), the lid-part side walls (17) are moved relative to each other, wherein, in the closed state of the folding box (1), the inner sides of the lid-part side walls (17) bear on the outside of the base-part side walls (15) in an at least partially overlapping manner, and, at their edges (15R), at least two base-part side walls (15) at least partially support the lid part (12) on the inside in the region of the respective folding edge (55).

Description

Field of invention

[0001] The invention relates to an openly stackable folding box, in particular a pizza box. State of the art

[0002] The closest prior art is considered to be the solution according to EP 0 912 406 B1. This document describes a cardboard box designed as a hinged-lid container for food. In a first embodiment ( Figs. 1-5 The container has a lower part with four inclined, interconnected side walls 14a-d and a lid part with three interconnected side walls 17a-c. When the container is closed, the side walls of the lower part must be deformed inwards. In other words, the side walls of the lid part are forced over the side walls of the lower part. In a second embodiment (Figs. 6-9), the side walls of the lower and lid parts are provided with fold lines ( Fig. 6, Pos. 22 / 23), so that the container can be folded flat. The closing problem is the same as in the first embodiment. The container is held in its closed state only by the mutual contact of the inclined side walls. Furthermore, when closing this container according to EP 0 912 406 B1, the defect can occur that parts 14b in Fig. 1 or 14a / c in Fig. 6 They get stuck and do not "unfold" outwards into the edge of the lid part, which is bad for the stability of the container.

[0003] Another relevant solution is disclosed in EP 2 263 951 B1. Here (see e.g. Fig. 5Figures 6A and 6B show a folding carton for food, which has a bottom part with sloping fixed side walls and a lid part with movable side walls. Figures 2A and 2B do show flap connections 212 / 232 on side flaps, but these relate to an insert ("tray 124", paragraph

[0034] ) for holding food. The carton itself is described in more detail in paragraph

[0010] with the corresponding Figures 5-6B. The publication gives no indication that the two side walls are in contact at all, let alone fixed in a position.

[0004] The publication FR 2 936 226 A1 discloses stackable cardboard boxes with sloping side walls at the bottom ( Fig. 2and 17). Figures 10 to 17 show numerous embodiments in which the sloping side walls of the base part are provided with recesses into which corresponding areas of the lid part engage to form positive locking connections between the lid and the base part.

[0005] EP 0 548 879 A1 also reveals stackable cartons with sloping side walls and many different interlocking connections between lid and base, see figures 1 to 32.

[0006] Based on this prior art, the present invention aims to provide an openly stackable folding carton in which, with minimal effort for the user, the side walls of an upper part align precisely with the corresponding side walls of a lower part, and this alignment is maintained stably. Furthermore, the object is to provide a pre-assembled folding carton that can be stacked in a space-saving manner and thus transported economically. Finally, the object is to provide a resource-saving yet stable folding carton through the clever mutual support of the side walls and the membrane's load-bearing effect.

[0007] The problem is solved with a folding box according to the present invention having the features of claim 1.

[0008] A folding box (1) is provided which is made in one piece and has a bottom part (10) and a lid part (12) which are movable relative to each other via a film hinge (11), wherein the base part (10) has a convex-polygonal base body (10a) having at least three corners, and wherein, in both the pre-assembled and the closed state of the folding box (1), a hinge side wall (16) extends upwards from one side edge of the base body (10a) and a base side wall (15) extends upwards from each of the other side edges of the base body (10a), wherein the base side walls (15) are substantially planar and connected circumferentially to the hinge side wall (16), and wherein the base side walls (15) have an individual angle β_sw_i of more than 90° relative to the base body (10a), and wherein the lid part (12) has a lid base body (12a) which has substantially the same convex-polygonal shape as the base body (10a) of the base part. (10) has, but is larger than the base area body (10a),and a film hinge (11) to the bottom part (10) is provided on one side edge of the lid part base body (12a), and a lid part side wall (17) is provided on each of the other side edges of the lid part base body (12a), wherein a folding edge (55) is formed between each lid part side wall (17) and the lid part base body (12a) at the latest when the folding box (1) is closed, wherein in the pre-assembled and in the closed state of the folding box (1) the bottom part side walls (15) and the hinge side wall (16) are fixed relative to the bottom part base body (10a), while when the folding box (1) is closed the lid part side walls (17) are moved relative to each other without having to be curved or folded themselves for closing,wherein, in the closed state of the folding box (1), the lid part side walls (17) at least partially overlap the corresponding bottom part side walls (15) on the outside (= position A) and the lid part side walls (17) are fixed in this position A by at least one locking connection, and at least two bottom part side walls (15) support the lid part (12) at their edges (15R) in the area of ​​the respective folding edge (55) at least in a partial section. Advantageous embodiments of the device according to the invention are set out in the dependent claims.

[0009] The folding carton according to the invention generally serves as a stable and resource-saving flat packaging solution, and is particularly useful as transport packaging for flat to-go food items, such as pizza boxes for ready-made pizzas. It is preferably a flat folding carton for flat contents (height << length / width). However, taller folding cartons are also envisioned, which could accommodate, for example, cakes, slices of cake, chicken parts, etc. A folding carton is understood to be a three-dimensional, closed container produced from a sheet-shaped, cut, and scored or perforated pre-product by folding and joining. In this context, "closed" means that all sides of the container have a wall, which may, however, contain perforations or openings.

[0010] The steps involved in producing a folding carton from the pre-product include, firstly, pre-assembly and, secondly, closing the carton. After pre-assembly, the folding carton is in a pre-assembled state, with the bottom section being trough-shaped and the lid section being flat (where "flat" does not mean strictly planar; rather, the lid section may be pre-folded along creases). In this pre-assembled state, the lid section may already rest on the bottom section, but usually, the lid and bottom sections are opened quite wide, for example, slightly over 90° or even by approximately 180°. With an opening angle of approximately 180°, the pre-assembled folding cartons can be stacked to save space and are thus easy to store, transport, and ship. This stacked state is illustrated in the following image. Fig. 5As shown, with an opening angle of just over 90°, the folding boxes can also be stacked in a space-saving manner when pre-assembled, because the lid parts stand vertically and the folding box therefore requires less floor space. This allows for more efficient workflows when used, for example, as pizza boxes, compared to similar conventional pizza boxes, which, when pre-assembled, can only be stacked effectively when closed and must first be opened for filling.

[0011] Unlike comparable conventional folding cartons, pre-assembly can be carried out earlier and / or in larger quantities, and potentially automated. Pre-assembly can be performed in stages and can also be partially or completely reversed, provided the joints are detachable or conditionally detachable.

[0012] Before the folding box is used, specifically before the pizza is placed inside and the box is closed, it is pre-assembled and is usually stored or transported in this state. Pre-assembly can only be achieved by folding and joining the pieces using form-fitting, force-fit, and / or material-fit methods. Pre-assembly can be done manually in the simplest case without any tools, or entirely by machine. Pre-assembly can be carried out by the user of the folding box or by the manufacturer or a processing company. In the latter case, the user, such as a pizza baker, only needs to fill and close the box before use.

[0013] The closure is achieved by folding and a force-fit, form-fit, and / or material-fit joining, which can be detachable, detachable by destruction, or non-detachable. Material-fit joining using adhesive can be accomplished with adhesive surfaces between parts of the folding box, or with adhesive tape or stickers. There is also the option of using separate parts that are glued together during the manufacturing process.

[0014] Suitable materials for the folding box include solid or corrugated cardboard, as well as paperboard or other types of cardboard; plastics or metals are also conceivable. The special lightweight design of the folding box essentially creates a lightweight structure with high torsional rigidity and compressive strength. This results in robust handling while simultaneously requiring significantly less material. Compared to the prior art, the folding box according to the invention, made of thin / lightweight cardboard or solid board, is a very resource-efficient folding box, not only in terms of material savings but also in terms of the ecological aspect of resource conservation.

[0015] The special lightweight design of the folding box according to the invention is based on the following aspects.

[0016] Even in its pre-assembled state, the fixed, interconnected side walls of the base provide it with inherent rigidity for handling during filling and closing. The side walls do not need to be bent or folded for closing, and therefore, regardless of whether the folding box is pre-assembled or closed, they exhibit no weaknesses in terms of rigidity.

[0017] When closed, at least two bottom sidewalls support the already stiffening folded edges of the lid, providing them with additional rigidity. Simultaneously, the guidance of the bottom sidewall edges along the acute-angled folded edge prevents this edge from bulging inwards, which would be possible without this guidance, i.e., if the lid sidewalls were perpendicular to the lid base. Furthermore, the adjacent bottom and lid sidewalls create a double-walled structure. Therefore, the combined effect of the bottom and lid sidewalls allows them to withstand lateral compressive forces as well as compressive and shear loads acting in the plane of the walls. This makes the folding carton less susceptible to lateral impacts and gives it high local stiffness against compression, for example, when the carton is held tightly with one hand as a cantilever.

[0018] When closed, the outward tilt of the base's side walls, the fixed, external arrangement of the lid's side walls relative to the corresponding base walls, and the additional support provided by the base walls within the lid's base (as described above) create a membrane-like load-bearing effect. This results, firstly, in increased load-bearing capacity against vertical external pressure loads acting on the lid's base (e.g., from smaller folding boxes / containers placed on the lid) and, secondly, in increased torsional rigidity of the folding box itself.

[0019] The terms "bottom part" and "lid part" used here are for clarity and because this is the expected standard configuration. However, the folding box according to the invention can also be used in a way where the lid part is spatially located at the bottom and the bottom part at the top, or where both are oriented differently in space.

[0020] The folding carton has a one-piece construction, meaning the base and lid are made from the same pre-made product, are cut as a single unit, and remain intact at least until the carton is closed. Additionally, pre-prepared separation options may be present in the area between the base and lid, such as a perforation and / or a tear strip. This has the advantage of providing two separate compartments or is analogous to the freshness seal used by Call a Pizza. Furthermore, both parts may also have perforations or cutouts.

[0021] The shape of the base and lid sections is a convex polygonal surface with at least three corners. They will typically have four corners and be rectangular, especially nearly square. However, three, six, and eight corners, as well as other numbers starting from three, are also conceivable. The term "convex polygon" means that all interior angles of the polygon enclosing the surface are less than 180°.

[0022] In the simplest case, the base and lid side walls, as well as the hinge side wall, are trapezoids (true or convex, not overlapping), with one base side forming the fold line to the base body and the other base side forming the outer edge (also called the rim) or the film hinge, and the two legs representing the lateral ends of the side wall. In other cases, the trapezoidal surfaces may have reducing cutouts or openings, and / or expanding tabs may be attached to the trapezoids. Furthermore, in other cases, the two parallel sides of a trapezoid may only be approximately parallel to each other, which means, for example, that the base and lid bodies may not be parallel to each other, or that one or both base bodies may be curved.

[0023] In the context of the base and hinged side panels, "fixed" means that they possess a certain rigidity to retain their shape and do not need to be folded, creased, or bent to close the folding box. The continuous connection between these side panels does not necessarily have to extend the entire height of the folding box.

[0024] The fact that the base panel side walls have an individual angle of more than 90° to the base panel body means that they do not protrude at right angles, but rather are inclined outwards away from the base panel body. "Individual" in this context means that this angle can vary from one base panel side wall to another. The hinge side wall is preferably also inclined outwards, but could also be perpendicular to the base panel body or inclined inwards. The load-bearing capacity of the folding box is higher if the hinge side wall is also inclined outwards. While a perpendicular or inwards inclined hinge side wall does slightly impair stackability, this could be compensated for, for example in a rectangular design, by a steeper inclination of the base panel side wall on the opposite side.

[0025] The lid section has folded edges between the lid base and its side walls. When the folding box is closed, at least two bottom side walls contact these folded edges over at least a portion of them, providing additional support. This support can also extend along the entire length of the folded edge.

[0026] To hold down or fix the lid part side walls in position A, which occurs during the closing of the folding box, there are three possibilities, which can also be combined: 1a) at least one is connected to the bottom part at at least one point in addition to the hinge side wall, 1b) two adjacent lid part side walls are connected to each other at at least one point, or 2) two adjacent lid part side walls are coupled to each other.

[0027] The connection in options 1a and 1b is referred to in this application as a locking connection. This locking connection can be force-fit, form-fit, or made with additional fasteners such as adhesive, stickers, tape, or staplers. The connection point can be point-like, linear, or area-like. Each lid-side panel can be connected to the bottom panel or to another lid-side panel by a locking connection to hold or fix it in position A. For example, in the case of a rectangular folding box, at least two locking connections between the lid-side panels or at least three locking connections between the lid-side panels and the bottom panel are necessary. In principle, a locking connection can also simultaneously connect two lid-side panels and the bottom panel.There can also be at least two locking connections, where at least one of them acts between at least one lid part side wall and the bottom part, and at least one of them acts between two adjacent lid part side walls.

[0028] All lid side panels not held down or fixed in this manner by a locking connection are held down or fixed in position A by coupling with at least one other lid side panel, as described in option 2) above. The difference between this coupling and the locking connection between two lid side panels lies in the simplicity of the design and the associated unidirectional effect. Specifically, the coupling holds down or fixes one lid side panel by another without any corresponding feedback effect on the other. Another difference is the ease of closing, which will be shown in the embodiments. Multiple couplings can also be connected in series, so that, for example, one lid side panel is held down or fixed in position A by a second, and this second is in turn held down or fixed in position A by a third lid side panel.The third lid section / side panel is fixed in place, and only then is the bottom panel connected to the bottom panel by a locking mechanism to hold it in position A. These couplings reduce the number of locking mechanisms required to close the folding box to just one in the best-case scenario. This also makes opening the folding box later for removing the contents extremely easy. Brief description of the characters

[0029] Fig. 1A shows a folding box according to the invention in a first embodiment; Fig. 1B shows a folding box according to the invention in a second embodiment; Fig. 2 shows a top view of the lid part with the lid part side walls and retaining tabs according to the first embodiment; Fig. 3 shows a top view of the lid part with the lid part side walls and gussets according to the second embodiment; Fig. 4shows a perspective view of the folding box according to the invention in the closed state; Fig. 5 schematically shows how the folding boxes according to the invention can be stacked to save space; Fig. 6 shows another perspective view of the folding box according to the invention in the closed state in the embodiment with couplings between the respective side walls of the lid part and the front side wall of the lid part; Fig. 7 shows a section along the section line AA of Fig. 6 ; and Fig. 8 shows a top view of the front area of ​​the lid part base body. Detailed description of preferred embodiments

[0030] Fig. 1AFigure 1 shows a folding box 1, which consists of a base 10 and a lid 12 in one piece. The base 10 is a convex polygonal base body 10a with at least three corners. In this specific case, the base body 10a is square and has three side walls 15 and one hinge side wall 16. In the pre-assembled state, the side walls 15 and 16 are inclined outwards relative to the base body 10a and are connected to each other around their perimeter. The side walls 15 have an angle of inclination β_sw_i of more than 90° relative to the base body 10a. The angles of inclination β_sw_i are the same for all side walls 15, and the hinge side wall 16 is also inclined outwards at the same angle.

[0031] The lid part 12 consists of a lid part base body 12a and lid part side walls 17. The lid part base body 12a has the same basic shape as the bottom part base body 10, but is slightly larger. The lid part base body 12a is connected to the hinge side wall 16 via a film hinge 11. In the pre-assembled state, the lid part side walls 17 are movable relative to each other and relative to the lid part base body 12a without having to be bent themselves. In the pre-assembled state, the lid part side walls are at least partially independent of each other.

[0032] To facilitate understanding, three states are defined. The first state refers to the stage in which a planar, two-dimensional blank (not shown) exists, from which the folding box 1 according to the invention is later produced. The second state is the so-called "pre-assembled" state (see, for example, Fig. 1A or Fig. 1B ), which shows the stackable folding box 1 according to the invention with the trough-shaped bottom part after the blank has been folded. The third state is the closed state of the folding box 1 ( Fig. 4 or 6 ). As in Fig. 6 As shown, the lid part side wall 17 can be cut or punched so that it becomes progressively narrower from front to back towards the film hinge 11. The height of the lid part side wall 17 can theoretically be reduced to zero at its rear end.

[0033] When the folding box 1 is closed, the lid side walls 17 lie approximately (not technically exactly) against the outside of the respective bottom side walls 15 and are held or fixed in this position A. When the folding box is closed, the edges 15R of the bottom side walls 15 touch the area of ​​the fold edges 55 over at least part of their length. At the upper edge of the bottom side wall 15 (in Fig. 1B At the front position 15R, one or more projections (not shown) of any shape may be present, for example in the form of a circular segment. This results in one or more defined contact points in the area of ​​the fold edge between the cover part base body 12a and the front cover part side wall 17, depending on the number of these convex, projecting structures. Fig. 1B the "upper" position 17 at the top of 12A). This allows the torsional rigidity of the closed folding box to be further increased.

[0034] In the first embodiment according to Fig. 1A Two retaining tabs 20 are provided to hold down or fix the two side walls 17 of the lid section in the closed state. To close the folding box 1, starting from the point in Fig. 1A In the pre-assembled state shown, the lid part 12 is folded downwards, then the two side walls 17 of the lid part are placed against the corresponding side walls 15 of the base part. Then, in an ergonomically designed sequence, the retaining tabs 20 are folded over and attached to the left and right edges of the Fig. 1A front floor section side wall 15 is attached. Then the in Fig. 1AThe front side wall 17 of the lid section is folded downwards, thereby positively locking the retaining tabs 20 and, with them, the corresponding side walls 17 of the lid section. Finally, one or more lid section locking areas 51 are engaged with one or more corresponding bottom section locking areas 50 between the front side wall 17 of the lid section and the bottom section 10.

[0035] Fig. 1B shows a second embodiment of the folding box. The only difference to the solution according to Fig. 1A The difference lies in the fact that the function of the retaining tabs 20 is now taken over by the gusset 30. When the folding box 1 is closed, the gusset 30 is folded inwards so that it lies between the front lid side wall 17 and the front bottom side wall 15.

[0036] The gusset 30 of the second embodiment is described in relation to Fig. 3This is explained in more detail below. This connects and couples two adjacent lid part side walls 17. It consists of two surface elements 30a-b and three fold lines 31a-c, the angle between fold lines 31a and 31b being the same as the angle between fold lines 31b and 31c. Surface element 30a connects to one lid part side wall 17 via fold line 31a. Surface element 30b connects to surface element 30a via fold line 31b. Furthermore, surface element 30b is connected to the other lid part side wall 17 via fold line 31c. The gusset is preferably formed in one piece, running continuously from one side wall to the other, or it can also be subsequently created / manufactured (by subsequently embossing the cardboard material, by joining existing flaps or adding flaps, etc.). The gusset is as described in Fig. 3The cardboard is creased or perforated along the three fold lines 31a-c so that it can be easily folded inwards when closing the folding box. To ensure that the gussets 30 fold easily, cutouts (i.e., openings) of any shape can be made in the gusset areas 30a and 30b. Another way to facilitate the folding process is to partially cut or punch through the cardboard material in the area of ​​fold lines 31a, 31b, and / or 31c. This latter measure is, of course, not limited to fold lines 31a-c but can also be applied, for example, to the fold edges 55. If a fold line or fold edge is partially cut through, the cardboard can be folded more easily, and the resilience of the cardboard material is reduced.

[0037] When the folding box 1 is closed, the gusset 30 is located in folded form between the lid part side wall 17 (in Fig. 1B the front lid part side wall 17) and the corresponding bottom part side wall 15 (in Fig. 1B the front bottom part side wall 15) and is clamped and fixed between them. By being fixed in this predetermined way, it ensures that the other lid part side wall (in Fig. 1B one of the side lid part side walls 17) is held down and fixed in its position A without requiring its own locking connection with the base part 10.

[0038] In both the first and second embodiments of the invention, a lid part side wall 17, preferably the one that secures the retaining tabs 20 or the gussets 30, is connected to a corresponding bottom part closure area 50 via a lid part closure area 51. This can be done, for example, by means of a push-fit connection. It is also possible to design the lid part closure area 51 as a locking tab that engages in the bottom part closure area 50. Equally possible is to design the bottom part closure area 50 as a locking tab that engages in the lid part closure area 51.The specific implementation of this closure connection is not crucial to the invention itself – it only needs to be ensured that all lid part side walls are fixed in their respective positions A, either directly or indirectly, via the retaining tabs 20 or the gussets 30, by means of these elements. According to the invention, the retaining tabs 20 or the gussets 30, when arranged in the closed state of the folding box 1, create a coupling between two adjacent lid part side walls and serve to reduce the number of closure connections between the lid part side walls 17 and the bottom part 10.

[0039] In the closed state of the folding box 1, depending on the embodiment according to the invention, the two side lid part side walls are fixed in position A either by the retaining tabs 20 or by two gussets 30, which are each clamped between a bottom part side wall 15 and the front lid part side wall 17.

[0040] With reference to Fig. 1A and Fig. 1B The edges 15R of at least one base part side wall 15 have an engagement element 44 extending over at least a portion of the edge 15R, which engages in a corresponding recess 40 provided in the lid part base body 12a. Fig. 1A and 1BTwo engagement parts 44 are shown as examples, which engage in the two corresponding recesses 40. Other numbers of engagement parts 44 can also be chosen; the location of attachment is not limited by the illustration shown. For example, it is also possible to attach them to the recesses 40. Figures 1A and 1B The front side wall 15 (the side wall on which the bottom closure areas 50 are shown) is to be provided with at least one engagement element 44, for which a corresponding recess 40 is also provided. The engagement of the engagement elements 44 in the recess 40 results in a very shear-stable and torsionally rigid construction of the folding box 1.

[0041] Fig. 7 shows a section along the section line AA of Fig. 6 . In the area of ​​detail B, which is outlined with a dashed line, you can see how the upper edge 15R of the bottom part side wall (see also Fig. 1B) is effectively clamped at the fold edge 55 between the lid part base body 12a and the lid part side wall 17. This is due to the fact that the angle between position 12a and 17 is less than 90°. The bottom part side wall 15 cannot move in any direction when closed, which contributes to the excellent stability and torsional rigidity of the box.

[0042] Fig. 8 Figure 1 shows a top view of the front area of ​​the lid part base body 12a with the lid part side walls 17, the gussets 30, the lid part closure area 51 in the form of an extra-wide tab and two further fold lines 57. The lid part closure area 51 in the form of the tab shown is inserted into a correspondingly wide base part closure area 50, which is located in the lower area of ​​the associated base part side wall 15 (see Figure 1). Fig. 1BThe two fold lines 57 ensure that, when the box is closed, the gusset areas 30 do not exert any force that would pull the flap 51 out again. The lid closure area 51 can have a width ranging from, for example, 2 to 20 cm for a square folding box with an exemplary size of 30 cm x 30 cm.

[0043] A key difference from the solution according to EP 0 912 406, for both embodiments of the folding box according to the invention, is that in the pre-assembled state, the lid part side walls 17 are movable relative to each other without having to be bent and / or folded themselves. As soon as creases are present on a side wall of a folding box like the one described in document EP 0 912 406 (regardless of whether the side wall belongs to the bottom part or the lid part), this has an extremely negative effect on the overall stability of the box. Reference symbol list:

[0044] 1 Folding box 10 bottom part 10a Base section - base body 11 film hinge 12 Lid part 12a Lid part base body 15 Base section side wall 15R edge 16 hinged side panel 17 Lid section side wall 20 Retaining tabs 30 gore 30a-b Surface elements 31a-c Fold lines 40 recess 44 Intervention part 50 Bottom section closure area 51 Lid section closure area 55 fold edge 57 fold line

Claims

1. A folding carton (1), which is of one-piece construction and comprises a bottom part (10) and a lid part (12), which are movable relative to one another via a living hinge (11), wherein the bottom part (10) has a convex polygonal bottom-part base body (10a) having at least three corners and, in both the pre-mounted state and the closed state of the folding carton (1), a hinge side wall (16) extends upwardly from one side edge of the bottom-part base body (10a), and a respective bottom-part side wall (15) extends upwardly from each of the other side edges of the bottom-part base body (10a), wherein the bottom-part side walls (15) are substantially planar and are continuously connected to the hinge side wall (16), and the bottom-part side walls (15) each have, relative to the bottom-part base body (10a), an individual angle β_sw_i of more than 90°, wherein the lid part (12) has a lid-part base body (12a) which has substantially the same convex polygonal shape as the bottom-part base body (10a) of the bottom part (10), but is larger than the bottom-part base body (10a), and a living hinge (11) to the bottom part (10) is provided at one side edge of the lid-part base body (12a), and a respective lid-part side wall (17) is provided at the other side edges of the lid-part base body (12a), wherein a fold line (55) is formed between each lid-part side wall (17) and the lid-part base body (12a) at the latest when the folding carton (1) is closed, wherein, in the pre-mounted state as well as in the closed state of the folding carton (1), the bottom-part side walls (15) and the hinge side wall (16) are fixed relative to the bottom-part base body (10a), and wherein, in the closed state of the folding carton (1), the inner sides of the lid-part side walls (17) at least partially overlap and bear against the outer sides of the corresponding bottom-part side walls (15) (position A), and at least two bottom-part side walls (15), in this position A, support the lid part (12) on the inside in the area of the respective fold line (55) at least over a partial section by means of their edges (15R), characterized in that, when the folding carton (1) is being closed, the lid-part side walls (17) are moved relative to one another without the lid-part side walls themselves having to be curved or folded in order to close the folding carton, and the lid-part side walls (17) are fixed in this position A as a whole by at least one closure connection.

2. The folding carton according to claim 1, characterized in that the at least one closure connection acts between at least one lid-part side wall (17) and the bottom part (10).

3. The folding carton according to claim 1 or 2, characterized in that the at least one closure connection acts between respective adjacent lid-part side walls (17).

4. The folding carton according to claim 2 or 3, characterized in that, in the closed state of the folding carton (1), at least one lid-part side wall (17) is fixed in position A solely by being coupled to an adjacent lid-part side wall (17), which in turn is itself fixed in position A.

5. The folding carton according to claim 4, characterized in that the coupling is produced by means of a retaining tab (20) on the one lid-part side wall (17) and the positive-locking engagement thereof by an adjacent lid-part side wall (17) which is itself fixed in position A.

6. The folding carton according to claim 4, characterized in that the coupling is produced by means of a gusset (30) between two adjacent lid-part side walls (17), in that the one lid-part side wall is fixed by a positive-locking engagement of the gusset by the adjacent lid-part side wall (17), which in turn is itself fixed in position A.

7. The folding carton according to any one of claims 1 to 6, characterized in that at least one bottom-part side wall (15) has at least one fixed tab (44) in a partial area of the edge (15R), and that, in the closed state of the folding carton (1), said fixed tab projects into a corresponding opening (45) of the lid part (12) and forms therein an additional positive-fit connection acting in the direction of the fold line (55).

Images