ES2289248T3 - ROLLED CARTON PACKINGS THAT HAVE VERTICAL WALLS IN STACKING POSITION. - Google Patents

Abstract

Corrugated cardboard packaging comprising side walls (30, 32, 36, 38) intended to be arranged vertically and walls perpendicular to the previous ones, on which they are articulated by recessed (12, 18) forming horizontal folding lines, including each one of said side walls areas (58, 60) of lower resistance to vertical compression that extend along said recessed or parallel to these, this packaging being characterized because, on the side walls (30, 32, 36, 38) and in the areas (58, 60) of lower resistance to vertical compression, the corrugated cardboard grooves are oriented horizontally.

Description

Corrugated cardboard packaging that has walls vertical stacking position.

The invention relates to cardboard packaging corrugated, which include walls arranged vertically in position Stacking The invention is more particularly intended improvements made to such packaging, in order to transfer the load exerted on the conditioned items vertically on these packages.

In your patent application FR-A-2 814 147, the Applicant describes, for the same purpose, a packaging of the type that it comprises vertical side walls and horizontal walls that they are articulated on the vertical walls by lines of horizontal folding, characterized in that on each of said vertical walls form folding fins that extend along said fold lines, said fins being liable to fold spontaneously into the interior of the packaging, when it is subjected to vertical compression.

According to one embodiment, said fins are they form marking on the vertical walls two grooves or die cut parallel to the fold lines.

According to another embodiment, doubles are formed fins near the horizontal folding lines.

According to a third embodiment of the invention, the fins are constituted by crush zones extended along the fold lines.

In all these cases, the fins can be initially in the plane of the vertical walls but also You can give them a little inclination to help them bend.

It is understood that when the cardboard is found in the horizontal walls deforms and that, due to this fact, the upper wall of the packaging tends to approach the bottom wall, this movement is accompanied by a folding towards the inside of the fins with respect to the plane of the walls vertical, or an accentuation of the inclination when fins are initially inclined, tilting until the products effectively support the applied load. In contrast, the vertical walls do not suffer any deformation and They remain perfectly vertical and flat. Therefore, it You can say that the fins behave like real absorbers of deformation located, which fully support all the deformation of the horizontal walls and that prevent this deformation is transmitted to vertical walls.

Thanks to the aforementioned provisions, relatively light cartons can be used, without risk of weaken the side walls of the packaging, and save from this material mode

The folding fins of the packaging of FR-A-2 814 147 constitute by consequently areas of lower resistance to vertical compression, that lend themselves to a local deformation that does not affect the walls vertical sides of the packaging. This previous request indicates also that the areas of least resistance to vertical compression they can be obtained by local crushing of the corrugated cardboard.

During his work, the Applicant established that if used, for the realization of vertical walls and of the associated local deformation zones, a corrugated cardboard whose grooves are arranged horizontally, it is facilitated considerably deformation of deformation zones local.

Accordingly, the object of the invention is a corrugated cardboard packaging comprising lateral walls intended to be arranged vertically and walls perpendicular to the foregoing, on which they are articulated by raised edges forming horizontal folding lines, each of said walls lateral areas of lower resistance to vertical compression, which extend along said recessed or parallel to these, this packaging being characterized by the fact that, in the side walls and in areas of lower resistance to vertical compression, the corrugated cardboard grooves are horizontally oriented
maybe.

It is noted that this horizontal arrangement of corrugated corrugated cardboard, on the walls intended to be placed vertically during use, it is contrary to teachings of the prior art. Indeed, according to the technique known, to reinforce the vertical compressive strength of packaging intended to be stacked, the grooves of the vertical walls are systematically oriented vertically, in order to act as vertical reinforcements. It is also what illustrates the aforementioned patent application, in whose figure 1 the corrugated corrugated cardboard are represented with a Vertical orientation.

The Applicant has established that if they are available horizontally corrugated cardboard corrugated walls vertical, thus considerably reinforcing the resistance mechanical and stiffness of the angle parts of these walls, which they form vertical dihedrals, so that, when loaded on a pallet a batch of packaging perfected in this way and you Wraps with a stretch plastic film or retractable, local deformations that manifest themselves are avoided usually along the vertical edges of the packaging in touch with the movie.

As explained above, the areas of lower resistance to vertical compression can be folding fins, such as those described above by the Applicant, but they can also be of a different type, as you will see in the following detailed description of the invention, in the which will be referred, by way of examples, to the drawings schematic annexes.

In these drawings:

Figure 1 is a perspective view of a corrugated cardboard box of the type with flaps according to the invention;

Figure 2 is a plan view of the plate pre-cut and stressed corrugated cardboard, where the box in figure 1, which shows the highlights made for define folding fins;

Figure 3 is a side elevation view of the packing of figure 1;

Figures 4 to 17 are analogous views of the Figure 3 of other packages according to the invention;

Figures 15 and 19 are detailed views that illustrate complementary weakening modes of the areas of Less resistance to vertical compression.

Reference will be made first to the figures 1 to 3, which illustrate the invention applied to a box with flaps, but it will be understood that the invention also applies to any Other type of packaging intended to be stacked.

The box represented in figure 2 is made from the cardboard plate 10 shown in the figure 1. As described in the application FR-A-2 814 147, this board is substantially rectangular and includes two folding lines longitudinal 12, 14, which extend over the entire length of the plate, at equal distance from the longitudinal edges. Inwardly, with respect to these folding lines and near these are respectively marked two grooved or die cut 16, 18, which define with these lines bands, respectively 58 and 60, which form the folding faces described in the application for patent mentioned.

On the central band of the plate which is comprised between the fold lines 12, 14, four transverse fold lines 20, 22, 24, 26, perpendicular to the longitudinal fold lines are marked. On the outer cardboard strips to the longitudinal folding lines, six notches 28 are cut, respectively aligned with the transverse folding lines 22, 24, 26. The longitudinal and transverse folding lines define on the central band two longitudinal walls 30, 32, alternated with two transverse walls 36, 38, and a glue pin 39. These walls 30, 32, 36, 38, are intended to be in an upright position during use of the box. The notches 28 define on the outer bands four inner flaps 40, 42, and 44, 46, which are respectively articulated on the transverse walls 36, 38, and four outer flaps 48, 50, and 52, 54, which are respectively articulated on the longitudinal walls
30, 32

In accordance with the invention, and contrary to the uses of technique, corrugated corrugated cardboard constitute the box are arranged horizontally on the walls laterals 30, 32, 36 and 38, when they are upright, as well as on folding fins.

The assembly of the box is done as is described in the previous application, rolling the plate by folding along transverse folding lines 20, 22, 24, 26, then gluing the glue pin 39 on the end of the longitudinal wall 32, in order to form a volume parallelepipedic Then, the inner flaps 40, 42 are folded, 44, 46 inward of this volume around the lines of longitudinal folding 12, 14, and are arranged perpendicularly to adjacent transverse walls 36, 38. Similarly, it fold the outer flaps 48, 50, 52, 54, around the longitudinal fold lines 12, 14 and glue on the inner flaps At the same time you fold each one of the outer and inner flaps, the forming machine bend at a slight angle? inwards (see figure 1) bands 58 and 60 that are respectively comprised between the longitudinal fold lines 12, 14, and the grooves or associated die cuts 16, 18.

As seen in figure 1, in the box made in this way, bands 58 and 60 form fins inclined at along the eight horizontal edges of the box.

When several of these boxes are stacked, they produces a settlement of the cardboard in the flap areas interior and exterior that are in contact with the funds of the Other boxes These cardboard deformations cause a top bottom approach 40, 44, 48, 52 bottom bottom 42, 46, 50, 54. This is translated by an accentuation of the inclination of fins 58, 60 which are located on all vertical faces of the box, with respect to the plane of these faces, and a slight deviation to the outside of the walls lateral.

When leaning further, fins 58, 60 accompany the deformation of the funds and support all of this deformation, reinforcing this phenomenon even more by the fact that corrugated cardboard grooves of fins 58 and 60 are arranged horizontally, which considerably facilitates aptitude for deformation of these fins, while the side walls 30, 32, 36 and 38 of the box remain perfectly flat and vertical.

As explained in the patent application It is not necessary to impose on fins 58 and 60 a initial inclination with respect to walls and flaps contiguous, as the fins tend to bend, even if they are initially in the plane of the adjacent side walls.

Instead of simple folding fins, you can also use double fins or multiple fins, as explained in the aforementioned patent application.

Finally, as explained in said request above, the folding fins can be replaced by areas whose weakening of vertical compressive strength is obtained by crushing the corrugated cardboard.

The packaging that has been described with reference to figures 1 to 3 therefore includes two inclined fins 58 and 60, in the upper and lower parts of the packaging, resulting of the presence of a grooving or supplementary die cut arranged horizontally, or a crush zone of the cardboard curly.

Many other embodiments, which enter under the FR-A-2 application 814 147 above, may include, in accordance with this invention, vertical walls whose cardboard grooves Wavy are oriented horizontally. Some are illustrated mainly in figures 3 to 17 and will be presented briefly below:

Figure 4: inclined wings 4 a , obtained by the addition of a groove or a supplementary die cut or a crush zone in the lower part of the packaging, and areas 4 b of weakening in the plane of the vertical walls in the upper part, obtained by adding a grooving or a supplementary die cut or a crush zone.

Figure 5: weakening zones 5 a in the plane of the vertical walls in the lower part of the packaging, obtained by a grooving or a supplementary punching or a crushing zone, and inclined fins 5 b , obtained by the addition of a grooving or a supplementary die cut or a crush zone at the top.

Figure 6: weakening zones 6 a , 6 b , in the plane of the vertical walls, in the upper and lower parts of the packaging, obtained by the addition of a groove or a supplementary die cut or a crush zone.

Figure 7: weakening zones 7 a , 7 b , 7 c , in the plane of the vertical walls, in the upper and lower parts of the packaging and in an intermediate zone, obtained by the addition of grooves or additional die-cuttings or areas of crushing, with a cutout 7 d practiced in the intermediate zone to allow the deformation of the corrugated cardboard.

Figure 8: weakening zones 8 a , in the plane of the vertical walls in the lower part of the packaging, obtained by the addition of a groove or a supplementary die cut or a crushing zone, and double weakening zones 8 b in the plane of the vertical walls in the upper part, obtained by the addition of two grooves or two supplementary weakening punches or a groove and a supplementary die cut.

Figure 9: weakening zones 9 a , in the plane of the vertical walls in the upper part of the packaging, obtained by the addition of a groove or a supplementary die cut or a crushing zone, and double weakening zones 9 b , in the plane of the vertical walls in the lower part, obtained by the addition of two grooves or two supplementary punches or a groove and a supplementary die cut.

Figure 10: double weakening zones 10 a , 10 b in the plane of the vertical walls, in the upper and lower parts of the packaging, obtained by the addition of two grooves or two supplementary punches or a supplementary die cut.

Figure 11: double weakening zones 11 a in the plane of the vertical walls, in the upper part, obtained by the addition of two grooves or two supplementary punches or a grooving and a supplementary die cut, and inclined fins 11 b in the lower part of the packaging, obtained by adding a groove or a supplementary die cut or a crush zone.

Figure 12: double weakening zones 12 a in the plane of the vertical walls at the bottom, obtained by the addition of two grooves or two supplementary punches or a groove and a supplementary die cut, and inclined fins 12 b , in the upper part of the packaging, obtained by adding a grooving or a supplementary die cut or a crushing zone.

Figure 13: double sloping weakening zones 13 a , 13 b , obtained by the addition of two grooves or two supplementary punches or a groove and a supplementary die cut, in the upper and lower parts of the packaging.

Figure 14: double sloping weakening zones 14 a in the lower part of the packaging, obtained by the addition of two grooves or two supplementary punches or a supplementary grooving and punching, and weakening zones 14 b in the plane of the walls vertical at the top.

Figure 15: double sloping weakening zones 15 a in the upper part of the packaging, in the plane of the vertical walls, obtained by the addition of two grooves or two additional die-cuttings, or a grooving and an additional die-cutting, and areas of weakening 15 b in the plane of the vertical walls at the bottom.

Figure 16: double sloping weakening zones 16 a at the bottom of the package, obtained by the addition of two grooves or two supplementary die-cuttings or a supplementary grooving and die-cutting, and double weakening zones 16 b in the plane of the vertical walls in the upper part, obtained by the addition of two grooves or two supplementary punches, or a grooving and a supplementary die cut.

Figure 17: double sloping weakening zones 17 a at the top of the package, obtained by the addition of two grooves or two supplementary die-cuttings, or a supplementary grooving and die-cutting, and double weakening zones 17 b in the plane of the vertical walls at the bottom, obtained by the addition of two grooves or two supplementary punches or a groove and a supplementary die cut.

It is clear that the embodiments that They have just been described and do not have any limiting character.

As depicted in figures 18 and 19, which are partial views corresponding to the portion of the Figure 1 surrounded by a circle, the notches 28 that separate the contiguous flaps 44 and 52 of Figure 1 can obviously have different ways.

Accordingly, the invention provides a considerable improvement to the packages that are subject to the patent application FR-A- 2 814 147, which improvement does not entail any additional manufacturing costs,  since it simply implies a particular orientation, but contrary to the teachings of the prior art, of the corrugated corrugated cardboard of the vertical walls of these packaging

Claims (7)

1. Corrugated cardboard packaging comprising side walls (30, 32, 36, 38) intended to be arranged vertically and walls perpendicular to the previous ones, on which they are articulated by overhangs (12, 18) that form horizontal fold lines, each one of said side walls including zones (58, 60) of less resistance to vertical compression that extend along said recessed or parallel to these, this packaging being characterized because, on the side walls (30, 32, 36, 38) and in the areas (58, 60) of least resistance to vertical compression, the corrugated cardboard grooves are oriented horizontally. 2. Packaging according to claim 1, characterized in that at least some of the areas of least resistance to vertical compression are constituted by fins (58, 60) inclined with respect to the adjacent vertical walls (30, 32, 36, 38). 3. Packaging according to claim 1, characterized in that at least some of the areas of least resistance to vertical compression are constituted by inclined double or multiple fins with respect to the adjacent vertical walls (30, 32, 36, 38). 4. Packaging according to one of claims 2 and 3, characterized in that the inclined fins (58, 60) are adjacent to the horizontal folding lines by which the vertical walls (30, 32, 36, 38) are articulated on other parts or elements (40, 42, 44, 46, 48, 50, 52, 54) of the packaging. 5. Packaging according to one of claims 1 to 4, characterized in that at least some of the areas of least resistance to vertical compression are located in the plane of the associated vertical walls (30, 32, 36, 38). 6. Packaging according to claim 5, characterized in that at least some of the areas of least compressive strength comprise two or several parts separated from each other by grooves or die-cuts arranged horizontally. 7. Packaging according to one of claims 1 to 6, characterized in that at least some of the areas of least resistance to vertical compression result from a local crushing of the corrugated cardboard.