DE102014211820B4 - Stackable folding carton - Google Patents

Abstract

Folded cardboard with a bottom plate (1), with the side walls (3, 5) projecting upright from the edges of the bottom plate (1, 2), on at least one marginal edge (9) of the side wall (3, 5) on two opposite side walls (3, 5) ) a lug (10, 15) is bent, wherein the of the marginal edges (9) of the side walls (3, 5) bent tabs (10, 15) abut against the outer surfaces of the side walls (3, 5) and wherein the bottom plate ( 1) facing tab ends (17) above the bottom plate (1) and thus leave a peripheral stack edge (18) on the outer surfaces of the side walls (3, 5), characterized in that on the bottom plate (1) facing away from the edge (9) all side walls (3, 5) a tab (10) is formed so that the bending edge (8) between the side wall (3, 5) and tab (10) forms a peripheral support edge (16) on the top of the folding carton and that recesses ( 21) in the bending edge (8) the peripheral support edge (16) break, un d that to the recesses (21) complementary, on the bottom plate (1) facing edges of the tabs (10, 15) integrally formed tongues (23) the peripheral stack edge (18) on the outer surfaces of the side walls (3, 5).

Description

The present invention relates to a folding carton, which is also referred to as folding box or Faltbox. Such folding cartons are made from a blank of corrugated cardboard. This initially flat blank has a number of different creases. If the regions adjacent to each other at a groove are folded relative to one another, folding edges are created in the area of the grooves and from the initially two-dimensional blank a three-dimensional body with a cavity is formed.

Such folding cartons preferably have a rectangular bottom plate, so that the folding cartons have the geometry of a cuboid after setting up the side walls formed on the bottom plate. The side walls are in the erected final state approximately at right angles to the bottom plate, wherein it does not matter in connection with the folding cartons and with the present invention that exactly an angle of 90 ° is maintained between the bottom plate and the side walls. Rather, it is about embracing with the bottom plate and the side walls a receiving space in which items or goods can be stored and transported. To improve the stackability of the folding cartons, the side walls of the folding carton run slightly conically towards the bottom plate.

Especially in the field of goods storage and the transport of goods, it is often desirable to be able to stack several folding cartons on top of each other. In order to be able to arrange the folding cartons vertically one above the other, the respective lower folding carton must provide a bearing surface for the upper folding carton to be erected. Furthermore, it makes sense to secure the stacked folding cartons in the horizontal direction so that a shift of the folding cartons is excluded in the horizontal direction against each other. Otherwise, one runs the risk of collapsing a folding carton tower consisting of several folding cartons arranged vertically one above the other by horizontally displacing a single folding carton.

From the DE-U-1 841 379 is a folding box in the form of a fruit sticks known. The well-known crate is cuboid. At the two short sides of the crate side parts are folded into the crampon interior. These side parts form wedge-shaped support cheeks for the fruit piles to be stacked above.

From the DE-A-2 830 105 is another stackable folding box known. From a flat folded and profiled sheet of corrugated cardboard, a folding carton is thereby produced, that the bottom plate and the side parts are folded several times in the area of the cardboard interior. This known folding is considered to be very complicated and very expensive in terms of manufacturing technology.

From the DE-U-9 201 167 Finally, another stackable folding carton is known. In this folding carton, the stackability is generated by the fact that two runners are folded out of the underside of the bottom portion of the folding carton and folded into the interior of the folding carton side sections. The side sections of the lower folding carton provide support for the skids of the upper folding carton placed thereon. The folding cartons made in this way appear quite filigree and unsuitable for industrial use.

From the US 2,326,926 a transport box made of wood fiber material is known. In this transport box, a peripheral stack edge is realized by an outer wall is mounted on the outside of an inner wall of the box, which ends above the box bottom and leaves the peripheral stack edge between the bottom and wall end. The walls of the transport crate are interspersed for the fixation of injected retaining clips. The material of this box is considered too heavy and the clasping of the side walls as montagetechnisch too complex.

From the US 3,114,493 a folding carton is known in which the side walls terminate on the longitudinal sides below the carton bottom and thus form runners for the folding carton. When stacked, the stand of the upper folding carton overlaps the upper edge of the folding carton below. At the same time stand feet protrude downwards from the transverse sides, which engage in corresponding receiving pockets of the underlying folding carton. By overlapping the lower Faltkorton longitudinal sides there is a risk that the folding carton is spread apart in the stacked state and unfolds automatically. In addition, the accurate stacking of such cartons is difficult because of the overlapping sides on the one hand and the feet feet on the other hand.

Based on this known prior art, the invention has the object to realize a stackable folding carton, which is easy to produce and has a high stability.

This object is achieved by the feature combination of claim 1 in an inventive manner. The dependent claims relate in part to advantageous and in part self-inventive developments of the invention.

The invention is based on a folding carton with a flat bottom plate. From the running in the horizontal plane bottom plate are in the vertical direction from side walls, where it - As stated above - the exact compliance with a 90 ° angle does not matter. Rather, the bottom plate and the side walls should include the largest possible receiving space from which the stored goods and goods can not fall out. In addition, the side walls to improve the stackability slightly inclined, namely tapered to the bottom plate. To produce the stackability additional tabs are formed on at least two opposite side walls. These tabs can be bent or folded at vorgefalzten bending edges of the side walls.

According to the invention, however, the tabs are not pivoted into the interior of the folding carton. Rather, the invention is based on the basic idea to finish the interior of the folding carton by setting up the side walls first and then pivot the tabs to the outside, so that the bent tabs rest in the folded end state of the folding carton on the outer surfaces of the side walls. The dimensions of the tabs are chosen so that the bottom plate facing ends or end faces of the tabs end in the vertical direction above the bottom plate, so that at the bottom of the carton a circumferential and against the envelope surface of the folding carton recessed stack edge is released. This stacking edge is similar to the folded folding carton a recessed level. If the folding cartons according to the invention are placed on top of one another, the upper folding carton rests with the edges or end faces of its tabs resting on the outside walls on the upper edge of the folding carton below. The peripheral stack edge with the bottom plate protrudes into the lower folding carton a degree in it. The stacking edge of the upper folding carton forms as it were the spring and the upper edge of the receiving space of the lower folding carton as it were the groove of a tongue and groove connection. In this way, both the stackability of the folding cartons in the vertical direction and their Unverschiebbarkeit is secured in the horizontal direction.

A significant advantage is always having to fold tabs only to the outside, while the interior of the folding carton remains completely unaffected by the folding process.

If a tab is integrally formed on the edge of the side wall facing away from the bottom plate, the resulting bending edge between the side wall and the associated tab forms a circumferential support edge on the upper side of the folding carton.

For the realization of the plug folding carton recesses are provided in the carton blank. These recesses interrupt in the folded state of the folding carton and the peripheral bearing edge on the top of the folding carton. On the tabs tongues are formed, which are designed to complement the recesses. If the folding cartons are stacked on top of each other, the tongues formed complementary to the cutouts engage in the recesses and thus form an additional positive fit between the folding cartons stacked on one another.

As advantageous for the stability of the folding carton, it is considered that at least at one peripheral edge of each side wall, a tab is formed, which is pivoted to form the folding carton to the outside.

In a further embodiment, the bottom plate is configured rectangular with each pairwise opposite side walls. From a manufacturing point of view, it is advantageous to attach tabs on all three marginal edges of two mutually opposite side walls. The lateral tabs can then embrace the two other side walls as it were from the outside and the third tab to form a Auflagerands also be swung down.

To form the largest possible contact surfaces of the tabs is further proposed that the tabs each extend over the entire length of the supporting edge edges of the side walls. If the folding carton is held together by a bond, the large contact surfaces of the tabs can each be coated with adhesive.

In order to create further contact surfaces and to optimize the Faltkartongeometrie, it is provided in a further embodiment, to attach at the free ends of the tabs additional pivoting wings, so as to increase the tabs or the available contact surfaces still.

To form a particularly stable folding carton with a wide and thus robust circumferential support edge is proposed in an advantageous embodiment, each one flap and a pivoting wing of an adjacent tab to be sandwiched over one another, so as to form a multi-layered side wall in the area above the stacking edge.

With reference to the two embodiments shown in the figures, the invention is explained in more detail. Show it:

1 The inside view of a blank for a folding carton with glued side walls,

2 the perspective view of three from the blank according to 1 manufactured folding cartons, which are partly stacked on top of each other,

3 the inside view of a blank for a folding carton with assembled side walls,

4 the perspective view of a folding carton with mated side walls, which from a blank according to 3 is made and

5 another perspective view of the folding box 4 ,

In the center of in 1 shown blank of a first embodiment is the central bottom plate 1 of the folding carton recognizable. The bottom plate 1 is rectangular. To the bottom plate 1 close in the longitudinal direction 2 running long side walls 3 at. Accordingly, in the direction of the longitudinal direction 2 right-angled transverse direction 4 the short side walls 5 , The bottom plate 1 and the side walls 3 . 5 are each by a grooving 6 from the bottom plate 1 demarcated. The in 1 shown folding carton blank is in one piece and consists of corrugated cardboard.

The side walls 3 . 5 The folding carton is created by the sidewalls 3 . 5 in both the longitudinal direction 2 as well as to the transverse direction 4 vertical installation direction 7 along the respective grooving 6 be folded up. Along the creases 6 then creates a bending edge 8th on the finished folding box, what in 2 is recognizable. In other words, the creases form 6 the edges of the bottom plate 1 ,

At her the bottom plate 1 in the transverse direction 4 facing away from the edges 9 wear the long side walls 3 one tab each 10 , The bottom plate 1 facing away from the edges 9 the long side walls 3 are in the embodiment as Doppelrillung 11 designed. This has the advantage that in the unfolded state of the folding carton between the tabs 10 and the long side walls 3 a transverse distance is present, in which further folding parts of the folding carton can be introduced to stiffen the folding carton so as to provide overlapping areas. In these overlapping areas, the overlapping surfaces can be glued together.

The ones on the long side walls 3 in the transverse direction 4 subsequent tabs 10 are in the longitudinal direction 2 slightly longer than the long side walls 3 , To form further Faltteile close in the longitudinal direction 2 to the tabs 10 Swinging wings on both sides 12 at. The swing-wing 12 are in turn by creases 6 with the tabs 10 connected or separated from these. Longitudinal 2 are in the swing wings 12 U-shaped recesses 13 brought in.

On the short side walls 5 close in the longitudinal direction 2 again tabs 10 at. The tabs 10 are also on the short side walls 5 at the bottom plate 1 facing away from the edge 9 each with a double groove 11 with the bottom plate 1 connected. The tabs 10 on the short side walls 5 pointing in the transverse direction 4 in about the same length as the short side walls 5 , The tabs 10 Optionally each have a central, flat oval handle eye 14 on. In the transverse direction 4 are on the short side walls 5 short tabs 15 formed. The margins 9 between the respective short side wall 5 and the short tab 15 are grooved again. In the erected state of the folding carton form the short side wall 5 and the short tabs 15 in the area of the edges 9 bending edges 8th out.

In summary, it should be noted that the short side walls 5 on all edges 9 one tab each 10 . 15 wear while the long side walls 3 only at their bottom plate 1 facing away from the edges 9 tabs 10 wear. The the long side walls 3 associated tabs 10 However, carry on their side edges in turn more swinging wings 12 ,

To complete the folding carton, the side walls 3 . 5 - As already stated - in the installation direction 7 folded up and set up. The side walls 3 . 5 run in the erected state approximately at right angles to the bottom plate 1 , The bottom plate 1 and the side walls 3 . 5 include the receiving space of the folding carton. On the bottom plate 1 can be placed to be stored or transported goods and are against lateral falling out of the side walls 3 . 5 secured.

The further completion of the folding carton is done by folding the remaining folding parts to the outside. In the from the sidewalls 3 . 5 and the bottom plate 1 formed interior of the folding carton so no folding part is folded into it. In this way, the folding carton receives a cuboid interior.

According to the embodiment, after setting up the side walls 3 . 5 the short tabs 15 around its edges 9 towards the outer surfaces of the long side walls 3 pivoted. The inner surfaces of the short tabs 15 overlap so the outer surfaces of the long side walls 3 and can with the long side walls 3 are glued together in the overlap areas created in this way. Then the to the long side walls 3 about the double groove 11 molded tabs 10 pivoted down so that the inner surfaces of the tabs 10 on the outer surfaces of the short tabs 15 come to rest and thus create an overlap area again. The swing-wing 12 be around the crease 6 pivoted so that the inner surfaces of the swing wings 12 on the outer surfaces of the short side walls 5 They lie hugging and overlapping, as it were. In this overlap area, the outer surfaces of the short sidewalls can 5 with the inner surfaces of the swing wings 12 be glued. The U-shaped recesses 13 complement each other to a flat oval handle eye 14 , In the last production run, those on the short side walls 5 about the double groove 11 fixed tabs 10 swung down. Here, the recesses are aligned 13 and the handle eye 14 to form a common grip eye 14 ,

From the representation of 2 It can be seen that the outsides of the double groove 11 both on the long side walls 3 as well as on the short side walls 5 the erected folding carton a circumferential Auflagerand 16 form.

From the representation of 2 is still recognizable that in the folded state of the folding box of the bottom plate 1 facing flap ends 17 in the installation direction 7 above the bottom plate 1 end up. The length of the tabs 10 in the installation direction 7 is therefore less than the corresponding length of the side walls 3 . 5 , As a result of this difference in length is the erected folding carton a circumferential stack edge 18 educated. The surrounding stack edge 18 is similar to that of the outer surfaces of the tabs 10 formed outer shell of the folding carton recessed level. This level is on both the top and bottom cartons in 2 clearly.

The operation of the invention is as follows:
The upper folding carton lies with the tab ends 17 , so the front sides of the tabs 10 on the surrounding bearing edge 16 of the folding carton arranged thereunder. The bottom plate 1 with the from the stack edge 18 formed level protrudes around the height of the stacking edge 18 into the interior of the folding carton arranged underneath. The in the area of the stack edge 18 free outer surfaces of the side walls 3 . 5 lie on the inner surfaces of the side walls 3 . 5 of the underlying folding carton. The stack edge 18 of the upper folding carton engages in the manner of a tongue and groove connection in the interior of the underlying folding carton, wherein the stacking edge form the spring and the interior of the groove.

The in 3 illustrated folding carton blank of a second embodiment corresponds in many parts to the blank according to 1 , so that identical parts are provided with identical reference numerals. Below are the differences of in 3 shown blank compared to in 1 illustrated blank explained:
While the folding parts of in 1 shown blank for the completion of the folding cartons glued or pressed together shows 3 an embodiment of a blank, in which the folding carton is held together by positive fuses, ie by a mating of moldings. Of course, it is possible to supplement this positive cohesion by a bond or the like.

For positive locking are at the ends of the tabs 10 in the transverse direction 4 Restraint ties 19 formed. Likewise, at the flap ends 17 the long side walls 3 associated tabs 10 Restraint ties 19 arranged. The retaining anchor 19 protrude tongue-like from the tabs 10 from. In the area of the long side walls 3 with the bottom plate 1 connecting grooving 6 are fixing slots 20 formed. In the final assembled state of the folding carton these fixing slots 20 from the rear grip parts of the retaining anchor 19 interspersed around the slot edges of the fixing slots 20 to reach behind. Finally, in the field of double-groove 11 between the long side walls 3 and their associated tabs 10 recesses 21 intended. Between the edges 9 the short side walls 5 and the short tabs 15 are finally mounting eyes 22 released to handles for retaining anchors 19 to accomplish. Finally, at the short tabs 15 tongues 23 formed.

The assembled folding carton is explained in more detail below:
In the presentation of the 4 is the peripheral edge of the top of the carton 16 recognizable. The Auflagerand 16 is from the aforementioned recesses 21 broken in four places. If the folding cartons are stacked on top of each other in accordance with this second embodiment, they grip the peripheral stacking edge 18 also breaking tongues 23 in the recesses 21 one.

The tongues 23 are on the one hand directly to the short tabs 15 formed. The other is the tongues 23 from the to the tabs 10 the long sides 3 molded retaining anchors 19 educated. Restraint ties 19 be with the folded folding carton of the tongues 23 just turned what was in 5 is recognizable. The retaining anchor 19 engage in corresponding fixing slots 20 to them in the area of the bending edge 8th between the bottom plate 1 and the long side walls 3 assigned. The same applies to the retaining anchor 19 at the tabs 10 which are the short side walls 5 assigned. These retaining anchors 19 grab in mounting eyes 22 , which in the marginal edge 9 between the short side wall 5 and short tab 15 are arranged.

Essential in both versions is the fact that all the formation of the Auflagerands 16 and the stack edge 18 serving folding parts based on the interior of the folding carton are folded outwards. Furthermore, it is essential that the stacked folding cartons in the region of the circumferential Auflagerandes 16 and the stack edge, also referred to as a stack edge 18 in the manner of a tongue and groove connection form-fitting engage each other.

LIST OF REFERENCE NUMBERS

1

baseplate

2

longitudinal direction

3

Long sidewall

4

transversely

5

Short sidewall

6

creasing

7

setup direction

8th

bending edge

9

edge

10

flap

11

double groove

12

rotary vane

13

recess

14

grip eye

15

Short tab

16

supporting edge

17

tab end

18

stacking edge

19

Restraint ties

20

fixing slot

21

recess

22

mounting pad

23

tongue

Claims (7)

Folding carton with a bottom plate ( 1 ), with from the edges of the bottom plate ( 1 ) upright side walls ( 3 . 5 ), whereby on two opposite side walls ( 3 . 5 ) each of at least one marginal edge ( 9 ) of the side wall ( 3 . 5 ) a tab ( 10 . 15 ) is bent, whereby the of the marginal edges ( 9 ) of the side walls ( 3 . 5 ) bent tabs ( 10 . 15 ) on the outer surfaces of the side walls ( 3 . 5 ) and wherein the bottom plate ( 1 ) facing tab ends ( 17 ) above the bottom plate ( 1 ) and so a circumferential stack edge ( 18 ) on the outer surfaces of the side walls ( 3 . 5 ), characterized in that at the bottom plate ( 1 ) facing away from the edge ( 9 ) of all side walls ( 3 . 5 ) a tab ( 10 ) is formed so that the bending edge ( 8th ) between side wall ( 3 . 5 ) and tab ( 10 ) a peripheral bearing edge ( 16 ) forms at the top of the folding carton and that recesses ( 21 ) in the bending edge ( 8th ) the circulating bearing edge ( 16 ) and that to the recesses ( 21 ) complementary to the bottom plate ( 1 ) facing edges of the tabs ( 10 . 15 ) molded tongues ( 23 ) the circumferential stack edge ( 18 ) on the outer surfaces of the side walls ( 3 . 5 ) break through. Folding box according to claim 1, characterized in that on all side walls ( 3 . 5 ) of at least one marginal edge ( 9 ) a tab ( 10 . 15 ) is bent. Folding box according to claim 3, characterized by a rectangular bottom plate ( 1 ) with pairs opposite one another, from the bottom plate ( 1 ) at right angles protruding side walls ( 3 . 5 ) each with three bent tabs ( 10 . 15 ) at the marginal edges ( 9 ) of a side wall pair on the one hand and / or with one of the bottom plate ( 1 ) facing away from the edge ( 9 ) bent tab ( 10 . 15 ) of the other side wall pair on the other. Folding carton according to one of claims 1 to 3, characterized in that the tabs ( 10 . 15 ) each over the entire length of the supporting sidewall edges ( 9 ). Folding box according to claim 4, characterized by pivoting wings ( 12 ) at the free ends of the tabs ( 10 . 15 ) such that the pivoting wings ( 12 ) over the side wall ( 3 . 5 ) supporting sidewall edge ( 9 ). Folding box according to one of claims 1 to 5, characterized in that on the outer surfaces of the side walls ( 3 . 5 ) one tab each ( 10 . 15 ) and a pivoting wing ( 12 ) an adjacent tab ( 10 . 15 ) on top of each other to form a broad support edge ( 16 ) on the one hand, and a stack edge which clearly springs back against the outer skin of the folding carton (US Pat. 18 ) on the other hand. Folding box according to one of claims 1 to 6, characterized in that when two stacked folding cartons the stack edge ( 18 ) the Auflagerand ( 16 ) of an underlying further folding cartons in the manner of a tongue and groove connection engages behind.

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