FR3131286A1 - PLATE MADE OF SEMI-RIGID CORRUGATED MATERIAL AND PACKAGING WEDGE DEVICE MADE FROM SUCH A PLATE - Google Patents

Abstract

Plate (1) of corrugated semi-rigid material comprising parallel and spaced perforating lines (30) which extend orthogonally to the direction of the flutes of the corrugated material, and further comprising so-called transverse lines (31) for bending or cutout, which are parallel and spaced apart, and extend perpendicular to the perfo-grooving lines (30) so as to draw in said plate a grid, preferably regular, of a plurality of panels (3) directly adjacent to each other. Such a plate makes it possible to provide, after possibly cutting, and after folding, a completely modular packaging wedging device. Figure to be published with abstract: Fig. 2

Description

PLATE MADE OF CORRUGATED SEMI-RIGID MATERIAL AND PACKAGING SETTING DEVICE MADE FROM SUCH A PLATE

The invention relates to the field of packaging wedging devices made of corrugated semi-rigid material such as corrugated cardboard.

The term “semi-rigid material” means a material capable of being folded manually without tools. By the term “corrugated” relating to a material is meant a material made of at least one corrugated sheet of said material sandwiched between at least two flat sheets of said material. A corrugated sheet is a sheet with grooves. The expression “direction of the groove” is taken here in its usual definition, that is to say that the direction of the groove corresponds to the longitudinal direction of the groove, a direction which is perpendicular to the pitch of the groove.

There are several types of packaging support devices for transporting goods in order to support them in their packaging and shipping box (cardboard). The most common devices for cushioning and protecting any shape of item are bubble wrap, air bags and cushioning particles such as polystyrene chips. These devices have the advantage of being able to adapt to any geometry of the article to be wedged. However, they are made of plastic and can give the recipient an unfavorable image of the sender, as part of respect for the environment.

A solution reducing the ecological footprint is the use of cardboard packaging wedging devices. The cardboard material is further known to provide reliable, sturdy and lightweight cushioning. However, it is adapted to the shape of the item to be packaged, for example a bottle. The wedging elements offered in cardboard have a geometry, cutouts and folds designed to systematically surround or partially accommodate the item to be protected or match its contours. Consequently, for each type of item, a cushion of an appropriate shape must be designed, which does not contribute to a reduction in packaging costs. In addition, since the wedging device is adapted, it cannot most often be reused by the recipient of the package in order to be recycled for another shipment.

The invention therefore aims to propose a packaging wedging device made of corrugated semi-rigid material, preferably corrugated cardboard, for the transport of goods, particularly in e-commerce, which does not present the aforementioned drawbacks, in particular which can adapt to any type of article shape and can be simple and quick to implement.

The invention relates to a plate of semi-rigid corrugated material which comprises perforating lines (thus capable of being cut or folded) parallel and spaced which extend orthogonally in the direction of the grooves of the corrugated material, and further comprises so-called transverse folding or cutting lines which are parallel and spaced apart, and extend perpendicular to the perforating lines so as to draw in said plate a grid of a plurality of panels directly adjacent to each other. The panels are therefore delimited by the perforating lines and the transverse lines. The panels are all arranged edge to edge. By “arranged edge to edge”, we mean the fact that the panels are connected to each other, without interface of a portion of surface section different from the section of a panel. The panels form a grid.

Thus, the plate of the invention by its grid shape with the presence of perforating lines and transverse cutting or folding lines makes it possible to simply and quickly put in volume one or more packaging wedging devices in the desired shape by the user. Such a plate provides a very wide variety of possible configurations of wedging devices after folding one or more cut-out groups of panels. In addition, by having produced lines which are necessarily perforating in a direction which is not that of the direction of the groove, the user is sure of obtaining a clean and rapid cut. Furthermore, by having drawn these perforating lines spaced apart to form adjacent panels, the user can easily cut the plate lengthwise along a perforating line and choose the width according to, i.e. the width of a single panel, or the width of several grouped panels. In the remainder of the description, by “width” relative to the plate, we mean the dimension perpendicular to the perforating lines, namely the dimension parallel to the direction of the groove, while the “length” of the plate is understood by the dimension parallel to the perforating lines and therefore the dimension perpendicular to the direction of the groove. The perforating lines also allow intuitive, easy, quick and clean folding, in a direction which is nevertheless perpendicular to the direction of the grooves. The user can therefore fold and possibly refold the panels lengthwise according to the perforation-creasing lines, but also in the width direction according to the transverse folding lines. A multitude of combinations are then possible thanks to the grid of the plate, in order to give volume to any geometric shape of wedging and to adapt to the desired wedging thickness. There is no need to have suitable wedging available for a particular object and/or for a particular packing box; the plate of the invention provides a universal wedging device.

The invention applies to both a single-fluted and multiple-fluted plate.

According to one characteristic, the perforating lines and the transverse folding lines are equidistant from each other so that the panels are all of identical square section (the plate forms a regular grid).

According to another characteristic, each of the transverse lines can be a creasing (which is not preferred because it does not provide easy and clean folding), or a double-creasing, or a perforating, or a semi-flesh (the cut is made at mid-thickness), or a cutting line along the entire thickness of the plate except one of the outer sheets of the plate (commonly called "slittage" in cardboard jargon). Preferably, the transverse lines in the plate of the invention are all perforating lines.

According to another characteristic, the perforating lines and the transverse lines are straight lines.

Advantageously, each of the perforating lines and the transverse lines (in particular when the latter consist of perforating lines), presents over part of its length (length of the entire plate), in particular over at least part of the length of one side or edge of each panel, a pair of half-flesh fillets which are spaced apart and parallel, each of the half-flesh fillets being arranged on either side of the line, preferably arranged at a distance of half the thickness of the plate. The pair of half-flesh nets provide a hinge between two panels, which makes folding even easier, and ensures quick and clean folding without tearing. In addition, the half-flesh nets allow panels to be folded 180° without spring effect; the panels can be folded against each other and remain in their folded position without tending to return to their initial position. Furthermore, this pair of half-flesh fillets allows cutting or folding without unpleasant noise for the user.

Advantageously, the plate may comprise two opposite cutting threads which are arranged orthogonally along the edge of the distal ends of each pair of half-flesh threads while cutting the perforating line or the associated transverse line. The cutting threads form a hinge end; they constitute a break segment in relation to the lines formed by the half-flesh fillets. The user can thus freely fold the panels together, easily and quickly, while being assured that the material will not tear. Preferably, the cutting threads each have a general U shape, the core of the U being the portion orthogonal to the half-flesh threads while the wings of the U are parallel to the half-flesh threads and extend in directions opposite to said half-flesh threads (the interior of the U of one of the cutting threads being turned in an opposite manner to the interior of the U of the opposite cutting thread), in particular the U having rounded corners (the junction portion between the core and each of the wings is rounded, the concavity being towards the inside of the U). The cutting threads, especially when they have a U shape with rounded corners, generate hinge ends which, surprisingly, actually prevent tearing of the material when folding, in particular at 180°, while the folding is done on a perforating-grooving line.

The panels may include a central hole particularly adapted to the passage of the neck of a bottle, preferably the panel having a section at most equal to the diameter of the bottle.

The plate may include identification elements such as inscriptions, which are distributed over one or more panels to define a cutting and/or folding card in order to identify for the user the combination of panels to be left grouped and the panels to fold and/or cut together to make a specific package wedging device. Such a marking card is intended in particular for the wedging of a given product, the user will take into account the marking elements to cut the strips, then possibly cut out certain panels, and fold the panels so as to obtain a wedging device according to a given volume of folding and expansion, which will be able to cooperate in a suitable manner with the article to be wedged.

According to another characteristic, the corrugated semi-rigid material is a biosourced material, in particular is cardboard.

The invention also relates to a blank resulting from cutting the plate of the invention, the cutting having been carried out along a perforating line to provide a blank comprising a strip the width of a panel, or several grouped strips , each strip being equipped according to its length with several panels and possibly having been cut along a transverse line (to adapt the number of panels per length of strip). The term “strip” in the remainder of the description means a blank of the plate whose width corresponds to a panel width.

Thus, the user has, from the plate, one or a plurality of individual packaging wedging devices which can each present, from at least one strip cut from the plate, various geometric shapes, which makes it easy to adapt to the volume to be filled in the packaging of an item to be protected.

The invention also relates to a packaging wedging device produced from the folding of the plate of the invention or from the folding of a aforementioned blank, the folding being carried out along the perforating lines and/or the transverse lines.

• la bande ou le groupement de bandes peut garder sa longueur avec la totalité des panneaux, et être enroulé sur elle-même ou respectivement lui-même, pour constituer une forme semi-cylindrique ou cylindrique à pans droits ;
• la bande ou le groupement de bandes peut être replié en pliant les panneaux les uns par rapport aux autres, en particulier à la manière d’un accordéon, ou totalement ramassée par pliage des panneaux à 180° entre eux, ou selon d’autres formes géométriques du type trièdre, cube, etc. ;
• la bande ou le groupement de bandes peut être réduit en longueur en ayant découpé un ou plusieurs panneaux puis la ou le conformer à la géométrie souhaitée comme précitée ; ou
• la bande peut être réduite à un panneau isolé découpé dans la bande.

A packaging wedging device made from a cut strip or several grouped strips can be transformed in different ways, for example;

• the strip or group of strips can keep its length with all of the panels, and be rolled up on itself or respectively itself, to constitute a semi-cylindrical or cylindrical shape with straight sides;
• the strip or group of strips can be folded by folding the panels relative to each other, in particular in the manner of an accordion, or completely collected by folding the panels 180° between them, or in other shapes geometric shapes of the trihedron, cube, etc. type. ;
• the strip or group of strips can be reduced in length by having cut one or more panels and then conforming it to the desired geometry as mentioned above; Or
• the strip can be reduced to an insulated panel cut from the strip.

Each packaging wedging device is therefore adjustable in length (according to the length of a strip or grouped strips), in thickness depending on the number of panels in a strip or in the grouping of strips, and in deployment in the space depending on the folding of the panels in relation to each other. This design therefore makes it possible to easily adapt the thickness, width and length of the device(s) for securing an item in a transport container, whatever the shape of the item. The item may be wrapped and/or wedged with suitably folded panels between the item and the container walls.

According to one characteristic, each of the panels of the plate or of a strip is square in shape, in particular may have a side of 100 mm. Advantageously, as the plate forms a regular grid in a preferred embodiment, the strips all have the same width. Alternatively, the strips of the plate have different widths.

Advantageously, a strip has at least three panels, preferably has at least four panels.

Consequently, the packaging wedging device of the invention is characterized in that from the same blank, said packaging wedging device has a modular shape in geometry, in particular it constitutes an accordion-folded part , and when the accordion is completely folded, it constitutes a collected piece with a surface section equal to that of a panel or a multiple of a panel, and whose thickness is that cumulative of the number of panels or the number of a multiple of a panel, or it constitutes a trihedron, or it constitutes a cube open on two opposite faces, or it constitutes a semi-cylindrical or cylindrical rolled shape with straight sides.

• ou représente une vue de dessus schématique d’une plaque selon l’invention en matériau semi-rigide ondulé, destinée à être utilisée pour fournir au moins un dispositif de calage d’emballage, le sens de la cannelure étant représenté par le pictogramme usuel.
• ou représente la selon un exemple de réalisation préféré de l’invention.
• ou correspond à une vue de détail de la .
• ou représente une vue de dessus de plusieurs flans découpés à partir de la plaque de la .
• ou représente un premier exemple de réalisation d’un dispositif de calage d’emballage selon l’invention à partir d’un flan découpé de la plaque de la , le flan étant constitué d’une seule bande de panneaux.
• ou montre un deuxième exemple de réalisation d’un dispositif de calage d’emballage à partir du même flan que celui de la .
• ou montre un troisième exemple de réalisation d’un dispositif de calage d’emballage à partir du même flan que celui de la .
• ou est un quatrième exemple de réalisation d’un dispositif de calage d’emballage à partir d’un autre flan comprenant deux bandes groupées de panneaux de la plaque de la .
• ou montre encore une autre forme de dispositif de calage d’emballage à partir de trois bandes groupées de panneaux.
• ou illustre une vue en perspective et de dessus d’un carton d’emballage comportant un autre exemple encore de dispositif de calage d’emballage de l’invention.
• ou illustre une vue en perspective et de dessus d’un carton d’emballage comportant le dispositif de calage d’emballage de la agencé dans une autre position, et un deuxième dispositif de calage de forme différente.
• ou montre un flan découpé dans une plaque conforme à celle de la comprenant en outre des éléments de repérage pour le découpage et le pliage, afin de parvenir à un dispositif de calage d’emballage en forme de trièdre comme celui illustré en .
• ou montre une étape intermédiaire de pliage du flan de la .
• ou montre une étape intermédiaire de pliage qui suit celle de la .
• est le dispositif de calage d’emballage obtenu après mise en forme du flan de la .

The present invention is now described using examples that are purely illustrative and in no way limiting the scope of the invention, and from the attached illustrations, in which:

• Or represents a schematic top view of a plate according to the invention in corrugated semi-rigid material, intended to be used to provide at least one packaging wedging device, the direction of the groove being represented by the usual pictogram.
• Or represents the according to a preferred embodiment of the invention.
• Or corresponds to a detailed view of the .
• Or represents a top view of several blanks cut from the plate of the .
• Or represents a first example of production of a packaging wedging device according to the invention from a blank cut from the plate of the , the blank being made up of a single strip of panels.
• Or shows a second example of producing a packaging wedging device from the same blank as that of the .
• Or shows a third example of producing a packaging wedging device from the same blank as that of the .
• Or is a fourth example of producing a packaging wedging device from another blank comprising two grouped strips of panels of the plate of the .
• Or shows yet another form of packaging wedging device from three grouped strips of panels.
• Or illustrates a perspective and top view of a packaging carton comprising yet another example of a packaging wedging device of the invention.
• Or illustrates a perspective and top view of a packaging carton comprising the packaging wedging device of the arranged in another position, and a second wedging device of different shape.
• Or shows a blank cut from a plate conforming to that of the further comprising marking elements for cutting and folding, in order to achieve a trihedral-shaped packaging wedging device like that illustrated in .
• Or shows an intermediate step of folding the blank of the .
• Or shows an intermediate folding stage which follows that of the .
• is the packaging wedging device obtained after shaping the blank of the .

The plate 1 of the invention in corrugated semi-rigid material, illustrated in Figures 1 and 2, makes it possible to produce a multiplicity of variants of packaging wedging devices of the invention, some of which D1 to D8 are illustrated as examples. non-limiting examples in Figures 5 to 11 and the . A packaging support device of the invention is used to support an article to be protected in a box or in a packaging and transport box.

The purpose of plate 1 of the invention is to provide different types of wedging devices D1 and following which are differentiated by their geometric shape. Plate 1 can be cut into several blanks such as 20, 21, 22, 23 and 24 ( ) and/or folded so as to be modular in length, width and thickness, and therefore in volume to adopt different shapes. We can thus offer, from a single piece of material, plate 1 or blanks such as 20 to 24 from plate 1, a variety of wedging devices which will adapt to the dimensions of the object to be protected. and the empty volume to be filled in the packaging box between the item to be protected and the walls of the box or packing box.

Plate 1 is made of a semi-rigid corrugated material and preferably based on biosourced material. Plate 1 is in the preferred example made of corrugated cardboard, in particular single-corrugated cardboard. The pictogram P in Figures 1 and 2 schematizes the direction of the groove.

The plate 1 comprises perforating lines 30 which are perpendicular to the direction of the groove, and transverse folding or cutting lines 31 which are parallel to the direction of the groove and orthogonal to the perforating lines 30. The perforating lines slotting 30 are spaced apart and parallel to each other, and the transverse lines 31 are spaced apart and parallel to each other. The perforating lines 30 and the transverse lines 31 draw a plurality of panels 3 directly adjacent to each other in the manner of a grid. The spacing between the perforating lines 30 and between the transverse lines 31 is preferably regular to form panels 3 which are square. The grid as illustrated is thus regular, it could alternatively be irregular by presenting panels 3 of different sections. A grid of the plate provides panels which, initially integral with each other, are capable of being cut and/or folded, in order to provide one or more modular wedging devices.

The plate 1 thus comprises a multiplicity of panels 3 which are adjacent to each other, edge to edge. By being of identical section, modularity is all the more important. In the case of a plate comprising only square panels 3, the plate 1 has dimensions of a multiple of the dimensions of a square panel 3. Plate 1 can be square or rectangular. Plate 1 shown on the is a rectangular plate with square panels 3 which have dimensions for example of 100 mm x 100 mm.

The perforating lines 30 extend over the entire length of the plate.

The transverse lines 31 extend over the entire width of the plate. The transverse lines 31 are preferably also perforating lines as illustrated in the , in order to facilitate cutting and ensure that it is clean. Alternatively, the transverse lines 31 could be creasing, double-creasing, half-flesh lines or even slitting lines.

Preferably, with the perforating lines 30 and the transverse lines 31, in particular when the latter are perforating lines, pairs of half-flesh threads 32A and 32B are associated in a localized manner. At least one pair of half-flesh nets 32A and 32B is arranged on each of the edges of a panel 3, in particular in the middle part of each of the edges of a panel 3. The two half-flesh nets 32A and 32B of a pair are spaced and parallel while facing each other, each being arranged on either side of a perforating line 30, 31. Advantageously, each creasing net 32A, 32B is arranged at a distance from the perforating line 30, 31, corresponding to half the thickness of the plate 1 (whatever the number of grooves on the plate). For example, for a plate 1 of 4 mm thickness, each creasing thread 32A, 32B is placed at a distance of 2 mm from the perforating-creasing line 30, 31. Depending on the size of the sides of the panels 3, the side of a panel 3 may include several pairs of half-flesh nets 32 distributed regularly per side. In the example illustrated, the squares 3 have a side of 100 mm and have per side (along the perforating lines 30 and 31) only one pair of half-flesh threads 32A and 32B, the pair being centered on the length of the side of the square. Each half-flesh net 32A, 32B has a length of between 20% and 50% of the length of one side of the panel 3. Each half-flesh net 32A, 32B extends for example over 40 mm for a panel 3 of length 100 mm. The pair of half-flesh threads 32A, 32B in combination with each of the perforating lines 30 and 31 acts as a hinge. Although a perforating line is precisely designed to be easily cut, the pair of half-flesh threads 32A, 32B with hinge function advantageously allows the panels to be folded along the perforating lines 30 and 31 without risk of tearing. In addition, the pair of half-flesh nets 32A, 32B with hinge function provides support for the panels in their folded position, in particular when they are folded at 180°. The panels folded at 180° remain stuck to each other, without tend to return to their position before folding. The pair of half-flesh nets 32A, 32B with hinge function avoids the spring effect.

More preferably, a pair of transverse cutting threads 33A and 33B are combined with each pair of semi-flesh threads 32A, 32B. Cutting threads are threads cut along the entire thickness of the plate. The two cutting threads 33A and 33B of a pair are opposite and are arranged being perpendicular and at the edge of the distal ends of each pair of half-flesh threads 32A and 32B while cutting the perforating line 30, 31. Each of the cutting threads 33A and 33B extend in a direction perpendicular to the perforating line 30, 31 and to the half-flesh threads 32A and 32B, and goes beyond said half-flesh threads 32A and 32B. Preferably, the cutting threads 33A and 33B have a general U shape, comprising a core 33' perpendicular to the perforating line 30, 31 and to the half-flesh threads 32A and 32B, and two opposite wings 33'' and opposite, perpendicular to the core 33'. The wings 33'' of a cutting net 33A extend in a direction opposite to those of the opposite cutting net 33B, that is to say that the interior of the U of one of the cutting nets 33A is turned from opposite manner relative to the inside of the U of the opposite cutting thread 33B. The cutting threads 33A and 33B form the ends of the hinge constituted by the half-flesh threads 32A and 32B; very advantageously, they stop the risk of tearing. Preferably, the portion connecting the core 33' to each of the wings 33'' of a cutting thread 33A, 33B is rounded, the concave portion being turned towards the inside of the U. Surprisingly, this U shape and rounded in its corners even better avoids tearing of the material, when folding is carried out along a perforation-grooving line 30 or 31.

The plate 1 by integrating perforating lines 30 comprises a plurality of adjacent strips extending in the direction perpendicular to the direction of the grooves, here eight strips 10 to 17 ( ), of a given width, preferably of the same width L, which are capable of being cut in relation to each other in a unitary manner or in a grouped manner (by two strips, three strips, etc.) thanks to the perforating lines 30 Thus, by cutting each strip or a group of strips, we obtain cardboard blanks which can have different widths. In addition, each of the strips 10 and following is capable of being folded along the transverse lines 31 so as to fold and/or fold the panels 3 totally or partially relative to each other. By folding and folding a strip or the strips if they are grouped, we manage to generate a wedging device which varies in shape and wall thickness as in the different examples of wedging devices illustrated D1 to D8. When the transverse lines 31 are also perforating lines, it is much easier to cut the strips to the desired length to adapt the number of panels per strip.

As shown in , the strips 10 and following are cut as necessary from the plate 1 and along the perforating lines 30 to form a cardboard blank 20 consisting of a unitary strip such as the strip 10, or a cardboard blank 21 , 22, 23 or 24 consisting of a plurality of strips grouped among the other strips 11 to 17. Each blank 20 to 24 thus has a different width, which here is a multiple of the width L separating two perforating lines 30.

It is then possible for the user to cut a cardboard blank (that is to say a cut strip or a plurality of strips grouped and cut relative to the initial plate 1) along a transverse line 31 to adapt its length . In order to facilitate cutting, the transverse lines 31 are as in the preferred example of the invention of perforating lines. On the , the blanks 23 and 24 come from the grouping of the two strips 16 and 17 of the plate 2, cut transversely to give two different lengths.

Depending on the blank cut from plate 1 and the folding and/or folding of the strip(s) and panels of a strip or group of strips, the shape and thickness of the wedging device will be different.

For example, we can achieve the wedging device D1 of the , which is a closed volume part formed from a single strip 10 completely folded on itself by folding its seven panels 3. The wedging device D1 constitutes a collected part whose length and width correspond to the dimensions of a panel 3 and whose thickness corresponds to a multiple of the thickness of a panel, that is to say to a multiple of the thickness of the initial strip and therefore of the thickness of the plate 1. We notes that all of the panels remain completely folded thanks to the pair of half-flesh threads 32A and 32B with hinge function at the junction of two panels 3. In addition, the cutting threads 33A and 33B act as end of hinge avoiding any risk of tearing.

There represents another form of wedging device D2 from the same strip 10 with seven panels 3, the folding and folding of which provides an open U-shaped part which has a central wall 40 of thickness corresponding to that of plate 1, one of the side walls 41 which is of quadruple thickness while the other opposite side wall 42 has a double thickness.

The D3 wedging device of the represents a cube open on two opposite faces, made from a single strip 10 with seven panels 3, three walls 50, 51, and 52 of the cube having a thickness corresponding to that of the plate 1, while the fourth wall 53 has a quadruple thickness. We therefore see that with a single strip 10, the user can modulate the wedging device and achieve, for example, three different shapes D1 to D3.

The D4 wedging device shown on the comes from a blank which was cut from plate 1 of the and comprises two grouped strips of five panels 3 (or five grouped strips of two panels depending on the manner in which the perforating lines 30 and the transverse lines 31 were initially cut). The panels are folded relative to each other to form the U-shaped wedging device D4 with a central wall 60 of thickness corresponding to that of the plate 1, two side walls 61 and 62 which are each of double thickness. Depending on the folding of the panels, the D4 wedging device is modular and can therefore take other shapes.

The D5 blocking device shown on the comes from a blank cut from the plate 1 and comprising three strips 70 to 72, each strip having four panels 3. The shape given to the wedging device D5 is that of an accordion fold according to the length of the strips, without affixing gangs against each other. It would also have been possible to provide four grouped strips of three panels, and to make an accordion fold or another fold to make another form of packaging wedging device.

There illustrates in top view, a packaging carton E comprising yet another variant of shape for a wedging device D6 resulting from a single folded and folded strip, and comprising six panels. The D6 wedging device forms an open U-shaped part with double wall thickness.

There is a variant of the , the carton E comprising two wedging devices, the wedging device D6 of the positioned differently, the U being turned towards the bottom of the carton E, and a wedging device D7 consisting of two panels 3 folded on top of each other, and placed in the bottom of the carton.

In yet another example, two wedging devices from two respective strips may have an L-shaped section fold, each of the wedging devices being able in a package to be arranged back to back along one of the faces of a panel of each device (one wing of each L of the device being arranged back to back in a vertical plane) and provide a length in a horizontal plane, which is modulated according to the number of folded panels for each L, and a height in a vertical plane, which is of reinforced thickness, the thickness being a function of the number of panels folded in the vertical plane.

Consequently, multiple folding variants are possible from plate 1 and blanks from plate 1, including folding to form a rolled-up shape which is semi-cylindrical (partially open) or cylindrical, with straight sides. .

• Etape a : garder coplanaires les panneaux A et A’, et les panneaux B et B’, et plier A, A’ contre B, B’ selon la ligne perfo-rainant 31 de jonction entre les paires de panneaux, pour parvenir au dispositif de calage intermédiaire de la ;
• Etape b : plier le panneau D sous le panneau C selon leur ligne perfo-rainant 31 de jonction, pour parvenir au dispositif de calage intermédiaire de la ;
• Etape c : découper la ligne perfo-rainant 30 entre le panneau C et le panneau C’, replier le panneau C’ sous le panneau C, et plier la ligne perfo-rainant 30 entre les panneaux B et B’ en amenant le panneau B’ contre le bord du panneau C de façon à obtenir le dispositif de calage D8 de la . Le dispositif de calage D8 forme ainsi un trièdre ouvert avec trois parois pleines 80, 81 et 82 dont chacune est pliée en L avec une paroi adjacente. Chaque paroi 80, 81 et 82 présente sa section surfacique égale à celle d’un panneau 3, et possède une double épaisseur pour deux des parois 80 et 81, et une triple épaisseur pour la dernière paroi 82.

Finally, in an embodiment illustrated in Figures 12A to 12D, the plate 1 or a blank 25 from the plate 1 of the includes marking elements 4 to mark the panels to be cut and/or folded. The marking elements 4 make it possible in particular to reference the panels 3 in order to identify for the user the chronology of the folding steps. The marking elements 4 are in the form of inscriptions which can be arranged on the inside of the panels 3 and/or astride the panels. The flan illustrated on the comprises two grouped strips of 3 square panels of which all of the lines 30 and 31 are perforating, one of the strips having four panels A, B, C, and D while the adjacent strip has three panels A', B ', etc'. The user can have an explanation of the folding steps available, for example:

• Step a: keep the panels A and A', and the panels B and B', coplanar, and fold A, A' against B, B' along the perforating-grooving line 31 of junction between the pairs of panels, to reach the device intermediate setting of the ;
• Step b: fold panel D under panel C along their perforating-grooving line 31 of junction, to reach the intermediate wedging device of the ;
• Step c: cut the perforating line 30 between panel C and panel C', fold panel C' under panel C, and fold the perforating line 30 between panels B and B', bringing panel B ' against the edge of panel C so as to obtain the wedging device D8 of the . The wedging device D8 thus forms an open trihedron with three solid walls 80, 81 and 82, each of which is folded in an L shape with an adjacent wall. Each wall 80, 81 and 82 has its surface section equal to that of a panel 3, and has a double thickness for two of the walls 80 and 81, and a triple thickness for the last wall 82.

Thus, the invention proposes a plate or blank of corrugated semi-rigid material which makes it possible to design modular packaging wedging devices in order to adapt to any type of item to be packaged. The packaging wedging device of the invention is universal.

Claims (10)

Plate (1) of semi-rigid corrugated material having grooves, the plate comprising perforating lines (30) parallel and spaced which extend orthogonally in the direction of the grooves of the corrugated material, and further comprising so-called transverse lines ( 31) folding or cutting, which are parallel and spaced apart, and extend perpendicular to the perforating lines (30) so as to draw in said plate a grid of a plurality of panels (3) directly adjacent to each other. Plate according to claim 1, characterized in that the perforating lines (30) and the transverse folding lines (31) are equidistant from each other so that the panels (3) are all of identical square section. Plate according to claim 1 or 2, characterized in that each of the transverse lines (31) is a creasing or a double-creasing, or a perforating, or a half-flesh, or even a slittage, preferably the transverse lines (31) being all perforating lines. Plate according to any one of the preceding claims, characterized in that each of the perforating lines (30) and the transverse lines (31) presents over part of its length, in particular over at least part of the length of one side of each panel (3), a pair of half-flesh nets (32A, 32B) which are spaced apart and parallel, each of the half-flesh nets (32A, 32B) being arranged on either side of the line ( 30, 31), preferably arranged at a distance of half the thickness of the plate. Plate according to the preceding claim, characterized in that it comprises two opposite cutting threads (33A, 33B) which are arranged orthogonally at the edge of the distal ends of each pair of half-flesh threads (32A, 32B) while cutting the perforated line -grooving (30) or the associated transverse line (31), preferably the cutting threads (33A, 33B) each having a general U shape, the core (33') of the U being the orthogonal portion to the half-flesh threads (32A, 32B) while the wings (33'') of the U are parallel to the half-flesh threads (32A, 32B) and extend in opposite directions to said half-flesh threads, in particular the U's have rounded corners . Plate according to any one of the preceding claims, characterized in that it comprises marking elements (4) such as inscriptions, which are distributed over one or more panels to define a cutting and/or folding card. Plate according to any one of the preceding claims, characterized in that the corrugated semi-rigid material is a biosourced material, in particular is cardboard. Blank (20; 21; 22; 23; 24; 25) resulting from cutting the plate (1) according to any one of the preceding claims, the cutting having been carried out along a perforating line (30) to provide a blank comprising a strip (10) the width of a panel (3) or several grouped strips (11, 12; 13, 14, 15; 16, 17), each strip being provided according to its length with several panels (3) and possibly having been cut along a transverse line (31). Packaging wedging device (D1, D2, D3, D4, D5, D6, D7, D8) produced from the folding of the plate (1) according to any one of claims 1 to 7 or from the folding of 'a blank according to the preceding claim, the folding being carried out along the perforating lines (30) and/or the transverse lines (31). Packaging wedging device according to the preceding claim, characterized in that from the same blank, said packaging wedging device has a modular shape in geometry, in particular it constitutes a piece folded like an accordion, and when the the accordion is completely folded, it constitutes a collected piece with a surface section equal to that of a panel or a multiple of a panel, and whose thickness is that cumulative of the number of panels or the number of the multiple of panels , or it constitutes a trihedron, or it constitutes a cube open on two opposite faces, or it constitutes a semi-cylindrical or cylindrical coiled shape with straight sides.