EP3144236B1 - Flat precursor for a package, method and package - Google Patents

Description

The invention relates to the field of packaging, in particular of polygonal section, formed by cutting and folding at least one continuous blank of a sheet of material, in particular a sheet of cardboard.

Such packages are commonly used and generally comprise a main body defined by envelope panels, including for example side panels. The side panels may be interconnected by a fold line of the material, which then delimits two side panels, the side panels defining a tubular casing portion of polygonal section. The package generally also includes, as an envelope panel, at least one bottom panel, but often several bottom panels for closing the bottom of the package, and they may also include, as an envelope panel one or more cover panels for closing at least part of the opposite end of the tubular casing portion. Such packagings may further include arrangements such as auxiliary panels, flaps, tabs, etc. which can be obtained from the same single blank cut and folded into a sheet of material.

These packages are commonly made of cardboard, especially corrugated cardboard.

The main body of the package therefore defines at least in part, by its envelope panels, an outer envelope of the package which delimits an internal volume of the package which has dimensions predefined by the size of the side panels, in function of the folding lines provided in the sheet of material.

Very often, these packages have a rectangular parallelepiped shape, with 4 side panels arranged in a rectangle.

For the same form of packaging, and even for the same size of packaging, there are many variants of this type of packaging that differ in particular by the manner of cutting the blanks or material, and by the way to fold and assemble this or these blank (s), however, to result in a packaging having the same form exterior and the same final dimensions. Some of these variants are listed and described in the "International Code for carton" (including the ^11th edition published in 2007) published by FEFCO (European Federation of Carton Manufacturers Corrugated - European Federation of Corrugated Board Manufacturers), Avenue Louise 250, 1050 Brussels, Belgium, www.fefco.org, this code having been adopted by the ICCA, the International Association of Corrugated Carton Manufacturers, on a global scale. This code will be referred to below as the "FEFCO Code".

These packages are formed from at least one blank cut from a sheet of material. In some cases, the main body of the package requires the realization of several blanks of material that can be assembled to one another. The blank is provided with creases, which are lines along which the material is worked, especially in the form of a creasing, to predefine a fold line, rectilinear or curved, between two panels of the package.

Generally, a package of this type is delivered to the end user, that is to say to the one who proceeds to the packaging of an object to be packaged by introducing the object into the internal volume delimited by the body. package, in the form of a flat precursor. This flat precursor is obtained from at least one cut and grooved blank. The flat precursor may be an unfolded blank in which a blank extends over a single thickness. In other cases, the precursor may be a precursor folded flat and possibly having undergone at least one forming junction operation. Generally, a shaping junction comprises at least one operation during which an edge of a panel of the blank is brought and locked in coincidence with an edge of another panel of the blank, these two edges being initially disjoint and at distance from each other in the blank or the blank assembly which constitutes the main body. This formatting junction makes it possible to predefine at least part of the final three-dimensional shape of the package. With such a shaping juncture, it is generally necessary to fold the main body flat to obtain the precursor flat. Folding can be simultaneous with the operation of junction. In some variants, the flat precursor is obtained by performing all the shaping junctions that can be achieved, without eliminating the possibility of folding the main body allowing the precursor to be flat. Thus, a flattened precursor having a forming junction has a thickness which is of the order of a few times the thickness of the material in which the blank is cut, for example a maximum thickness of between 2 and 5 times the thickness of the blank. thickness of the material in which the blank is cut. A flat precursor occupies a minimum volume that promotes empty transport and handling between its place of manufacture and the place where the packing operation will be carried out.

It is therefore conceivable that the flat precursor delimits no useful internal volume capable of accommodating a three-dimensional object to be packaged. On the other hand, the flat precursor is generally designed so that an end-user of the package has only a limited number of operations to perform to volume the package by unfolding the precursor flat. Generally, the setting up involves unfolding the precursor flat and a limited number of locking operations to lock the final three-dimensional shape of the package in which the latter defines the useful internal volume of the package. These locking operations may involve gluing operations or stapling or engagement pre-cut locking means in the panels of the blank. The volume of the packaging is usually made at the place of the packaging operation.

Despite the many variations that exist, it is therefore understood that a given package, having a given internal volume, has a fixed geometry predetermined by the cutting and creases in the material at the time of manufacture of the blank. However, the objects that one seeks to pack in such packaging do not necessarily have a regular shape or a dimension perfectly adapted to the internal volume. Thus, when one wants to package any object in a package of predetermined dimensions, it is common that one is obliged to choose a package of which at least one dimension of the internal volume is greater than the corresponding dimension of the object to be packaged. In this way, if no particular action is taken, this object is likely to move inside the package.

Of course, many techniques have been developed and are used to stall the object inside the package. The various wedging means that have been proposed so far are, in most cases, constituted by elements which are reported a posteriori, after the object to be packaged has been introduced into the internal volume, the wedging means being then arranged to try to fill in the empty spaces in the internal volume of the package around the object to be packaged. At least, the wedging means are most often introduced into the internal volume of the package after the volume of it.

The documents EP-2687452 and DE-202.04.975-U1 describe packages comprising setting means. The document EP-2687452 discloses a precursor flat according to the preamble of claim 1 and a method according to the preamble of claim 15. Although often such means perform perfectly their primary function of wedging, it remains nonetheless that this calibration requires provide, in addition to a package, such locking means and also require to provide, at least in some cases, a step of fixing these means in the package.

The object of the invention is to propose a new design of the means for wedging an object in the internal volume of a package, these setting means having to be as easy as possible to be used by an end user of the packaging. .

• La première et/ou la seconde zone d'adaptation comporte au moins trois rainages adjacents dans le matériau ; elle est reliée à une portion centrale panneau de calage par un rainage interne et au rabat de fixation ou à la patte de verrouillage par un rainage externe ; et elle présente au moins un rainage intermédiaire agencé entre les rainages interne et externe.
• Certains au moins des rainages adjacents d'une zone d'adaptation sont parallèles entre eux.
• Certains au moins des rainages adjacents d'une zone d'adaptation s'étendent selon des lignes droites.
• Certains au moins des rainages adjacents d'une zone d'adaptation s'étendent parallèlement au bord de fixation.
• Les rainages adjacents de la première zone d'adaptation sont parallèles aux rainages adjacents de la deuxième zone d'adaptation.
• Le volet de calage comporte au moins un rainage oblique qui s'étend en travers du panneau de calage et qui forme, par rapport une direction du bord de fixation du panneau de calage, un angle, de préférence compris entre 10° et 80°, plus préférentiellement compris entre 25° et 65°.
• Le volet de calage comporte au moins un rainage oblique qui s'étend depuis une zone centrale de la deuxième zone d'adaptation.
• Le rainage oblique s'étend en direction d'un bord latéral du panneau de calage, distinct du bord de fixation et du bord libre.
• Le volet de calage comporte au moins un rainage oblique primaire qui s'étend depuis une zone centrale de la deuxième zone d'adaptation en direction d'un premier bord latéral du panneau de calage, distinct du bord de fixation et du bord libre, et au moins un rainage oblique secondaire qui s'étend depuis la zone centrale de la deuxième zone d'adaptation en direction du même premier bord latéral, le rainage primaire et le rainage secondaire étant distincts.
• Le rainage primaire et le rainage secondaire sont décalés selon une direction perpendiculaire à une direction d'extension du rainage primaire.
• Le rainage primaire et le rainage secondaire ont des directions d'extension qui forment un angle compris entre 5° et 25°.
• Le volet de calage comporte au moins un premier rainage oblique qui s'étend depuis la zone centrale de la deuxième zone d'adaptation en direction d'un premier bord latéral du panneau de calage, ce premier bord latéral étant distinct du bord de fixation et du bord libre, et au moins un second rainage oblique qui s'étend depuis la zone centrale de la deuxième zone d'adaptation en direction d'un second bord latéral opposé du panneau de calage, lui aussi distinct du bord de fixation et du bord libre.
• Le volet de calage comporte au moins une première série de rainages obliques comportant un premier rainage primaire et un premier rainage secondaire qui s'étendent depuis la zone centrale de la deuxième zone d'adaptation en direction d'un premier bord latéral du panneau de calage, distinct du bord de fixation et du bord libre, et une seconde série de rainages obliques comprenant au moins second rainage primaire et un second rainage secondaire qui s'étendent depuis la zone centrale de la deuxième zone d'adaptation en direction d'un second bord latéral opposé du panneau de calage.
• Un premier rainage oblique et un second rainage oblique intersectent au moins un rainage adjacent de la deuxième zone d'adaptation respectivement en un premier point d'intersection et un second point d'intersection.
• Un premier rainage oblique et un second rainage oblique intersectent plusieurs rainages adjacents distincts de la deuxième zone d'adaptation respectivement en des premiers points d'intersections et des seconds points d'intersection.
• Le premier point d'intersection et le second point d'intersection délimitent un tronçon d'un rainage adjacent de la deuxième zone d'adaptation, et, le long du dit tronçon, le matériau est au moins partiellement découpé, ou découpé sur toute son épaisseur.
• Les premiers points d'intersection et les seconds points d'intersection délimitent plusieurs tronçons adjacents le long desquels le matériau est partiellement découpé ou découpé sur toute son épaisseur, formant des bandes de compensation adjacentes. Lors de la mise oeuvre du volet de calage, par déformation et pliage le long au moins de certains de rainages, certaines au moins des bandes de compensation ne sont plus liées que par leurs extrémités au reste du matériau de la zone d'adaptation.
• Le précurseur à plat est replié et présente un panneau d'enveloppe qui est joint à un autre panneau d'enveloppe par une jonction de mise en forme.
• L'assemblage de mise en forme entre deux panneaux d'enveloppe verrouille un bord d'un des dits panneaux en coïncidence avec un bord de l'autre des dits panneaux, les deux bords étant disjoints et à distance l'un de l'autre dans le premier flan.

For this purpose, the invention provides a flat precursor according to claim 1. According to other optional features of a packaging precursor according to the invention, taken alone in combination:

• The first and / or second adaptation zone comprises at least three adjacent creases in the material; it is connected to a central portion of the wedging panel by internal creasing and the fastening flap or the locking tab by external creasing; and it has at least one intermediate crease arranged between the internal and external creases.
• At least some of the adjacent creases of an adaptation zone are parallel to each other.
• At least some of the adjacent creases of an adaptation zone extend in straight lines.
• At least some of the adjacent creases of an adaptation zone extend parallel to the fastening edge.
• The adjacent creases of the first adaptation zone are parallel to the adjacent creases of the second adaptation zone.
• The wedging flap comprises at least one oblique groove which extends across the wedging panel and which forms, relative to a direction of the fixing edge of the wedging panel, an angle, preferably between 10 ° and 80 °, more preferably between 25 ° and 65 °.
• The wedging flap comprises at least one oblique crease extending from a central zone of the second adaptation zone.
• The oblique crease extends towards a lateral edge of the wedging panel, distinct from the fastening edge and the free edge.
• The wedging flap comprises at least one primary oblique crease extending from a central zone of the second adaptation zone towards a first lateral edge of the wedging panel, distinct from the fixing edge and the free edge, and at least one secondary oblique crease extending from the central zone of the second adaptation zone towards the same first lateral edge, the primary creasing and the secondary creasing being distinct.
• The primary crease and the secondary crease are offset in a direction perpendicular to an extension direction of the primary crease.
• The primary crease and the secondary crease have extension directions that form an angle of between 5 ° and 25 °.
• The wedging flap comprises at least a first oblique crease which extends from the central zone of the second adaptation zone towards a first lateral edge of the wedging panel, this first lateral edge being distinct from the fixing edge and of the free edge, and at least one second oblique crease extending from the central zone of the second adaptation zone towards a second opposite lateral edge of the wedging panel, also distinct from the fixing edge and the edge free.
• The wedging flap comprises at least a first series of oblique creases having a first primary crease and a first secondary crease which extend from the central zone of the second adaptation zone towards a first lateral edge of the stub panel , distinct from the fixing edge and the free edge, and a second series of oblique creases comprising at least second primary creasing and a second secondary creasing extending from the central zone of the second adaptation zone towards a second opposite lateral edge of the wedging panel.
• A first oblique crease and a second oblique crease intersect at least one adjacent crease of the second adapter zone respectively at a first intersection point and a second intersection point.
• A first oblique crease and a second oblique crease intersect a plurality of adjacent adjacent creases of the second adapter zone respectively at first intersection points and second intersection points.
• The first point of intersection and the second point of intersection delimit a section of an adjacent crease of the second zone of adaptation, and, along said section, the material is at least partially cut, or cut on all its thickness.
• The first points of intersection and the second points of intersection define a plurality of adjacent sections along which the material is partially cut or cut throughout its thickness, forming adjacent compensation strips. During the implementation of the wedging flap, by deformation and folding along at least some of the creases, at least some of the compensation strips are no longer linked by their ends to the rest of the material of the adaptation zone.
• The flat precursor is folded and has an envelope panel which is joined to another envelope panel by a shaping junction.
• The shaping assembly between two envelope panels locks an edge of one of said panels in coincidence with an edge of the other of said panels, the two edges being disjoint and at a distance from each other in the first flan.

The invention also relates to a package obtained from a flat precursor having at least one of the preceding characteristics.

The invention also relates to a method of manufacturing a flat precursor according to claim 15. The invention also relates to a method of manufacturing a package, of the type comprising a method of manufacturing a flat precursor having the one of the preceding characteristics, and comprising a subsequent step of setting the volume of the package by unfolding the precursor flat.

• La figure 1 est une vue à plat d'un exemple de réalisation d'un premier flan destiné à former un corps principal d'un précurseur à plat pour un emballage selon l'invention, et d'un second flan destiné à former un volet de calage pour ce précurseur.
• La figure 2 est une vue d'un précurseur à plat obtenu par assemblage du premier et du deuxième flan de la figure 1 .
• La figure 3 est une vue de dessus du précurseur à plat obtenu après une jonction de mise en forme et un repliage de l'ensemble du premier et du second flan assemblés de la figure 2 .
• La figure 4 et la figure 5 sont des vues en perspective illustrant un emballage obtenu à partir du précurseur de la figure 3 , illustrant deux étapes de la mise en oeuvre du volet de calage.
• La figure 6 et une vue en perspective et en coupe illustrant le calage d'un objet à l'intérieur de l'emballage des figures 4 et 5 , grâce au volet de calage selon l'invention.
• La figure 7 est une vue en perspective de l'emballage en cours de fermeture.
• La figure 8 et la figure 9 sont des vues similaires à celles de la figure 2 , illustrant deux autres exemples de réalisation d'un précurseur à plat selon l'invention.

Various other characteristics appear from the description given below with reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the subject of the invention.

• The figure 1 is a plan view of an exemplary embodiment of a first blank intended to form a main body of a flat precursor for a package according to the invention, and a second blank intended to form a wedging flap for this precursor.
• The figure 2 is a view of a flat precursor obtained by assembling the first and the second blank of the figure 1 .
• The figure 3 is a top view of the flat precursor obtained after a shaping juncture and a folding of the assembly of the first and second blanks assembled from the figure 2 .
• The figure 4 and the figure 5 are perspective views illustrating a package obtained from the precursor of the figure 3 , illustrating two steps in the implementation of the calibration component.
• The figure 6 and a perspective view in section illustrating the wedging of an object inside the packaging of figures 4 and 5 , thanks to the wedging flap according to the invention.
• The figure 7 is a perspective view of the package being closed.
• The figure 8 and the figure 9 are views similar to those of the figure 2 , illustrating two other embodiments of a flat precursor according to the invention.

We illustrated on the figure 1 a first blank 10 and a second blank 12, distinct from the first blank 10.

The two blanks 10, 12 are, in this embodiment, the only blanks necessary for the production of a flat precursor 13 which is illustrated in FIGS. figures 2 and 3 and which is obtained by assembling the two blanks 10, 12. Between figures 2 and 3 , the flat precenter has undergone a junction shaping operation by folding and joining the assembly thus obtained. The flat precursor 13 makes it possible, after any junction and folding operations, to obtain, by a volume-setting operation, the packaging 15 which is illustrated, in different configurations, on Figures 4 to 7 . The package 15 is a three-dimensional package of which an outer envelope, formed of envelope panels, delimits an internal volume 17, visible in particular on the figure 6 , intended to receive an object to be packaged. As will be seen below, the packaging 15 obtained thanks to the flat precursor 13 according to the invention makes it possible effectively to wedge inside this internal volume 17 an object of which at least one dimension is smaller than the corresponding dimension of this invention. internal volume 17.

The two blanks 10, 12 illustrated on the figure 1 are each cut into a sheet of material and are intended to form respectively a main body 14 of a flat precursor 13 for a package 15 and a wedging flap 16 of this precursor 13. The two blanks 10, 12 can be made in a sheet of identical material, or in sheets of different materials. The blank 12 of the wedging flap 16 is for example cut into a sheet of less dense material and / or less thick than that in which is cut the blank 10 of the main body 14. In both cases, the material is preferably of the type semi-rigid. In particular, the blank 10 of the main body 14 may be made of a material that has a basis weight greater than or equal to 200 g per square meter. The blank 12 of the wedging flap 16 is generally made of a material which has a basis weight greater than or equal to 120 g per square meter.

The blank 10 of the main body 14 may be made of a material which has a basis weight less than or equal to 1000 g per square meter while the blank 12 of the wedging flap 16 may be made of a material which has a lower basis weight or equal to 600 g per square meter. The material used is advantageously cardboard, in particular corrugated cardboard, including for producing the blank 12 of the setting flap 16. However, other materials may also be used, including synthetic materials of the plastic material type, for one or the other of the blanks or for the two blanks 10 and 12.

In this embodiment, the two blanks 10 and 12 are each composed of a single continuous blank, in the sense that all parts of the blank blank are interconnected with continuity of material. However, provision could be made for one or the other or both of the main body 14 or the setting flap 16 to be made from a composite blank comprising two blank elements assembled one to the other. other, in particular assembled flat, along a respective edge assembly, in the extension of one another.

The blank 10 of the main body 14 has essentially a number of envelope panels, intended to form at least a portion of an outer envelope of the package defining the internal volume 17. In the illustrated example, the main body comprises 4 lateral panels 21, 22, 23, 24 which are delimited successively relative to one another at the level of parallel fold lines 31, 32, 33. A first fold line 31 connects, delimiting them , a first panel 21 of a second side panel 22. A second fold line 32 connects the second side panel 22 to a third side panel 23, which is connected to a fourth extreme main panel 24 around a fold line 33 . the fold lines 31, 32, 33 thus define the sides of the corresponding side panels, and all extend in an orientation which will be arbitrarily referred to as vertical with reference to the orientation of the figures, without cett The arbitrary denomination can not be interpreted as limiting the scope of the invention to any real orientation in the space of these sides. At a vertical edge 30 opposite the first fold line 31, the first panel 21 is connected to a connecting strip 18 which, as will be seen later, is to be assembled, for example by gluing, on the fourth panel 24, in the vicinity of a vertical end edge 34 of the fourth panel 24, opposite the third fold line 33, the vertical edge 30 of the first side panel 21 then being brought in correspondence with the vertical edge 34 fourth panel 24.

In general, and unless expressly specified, the fold lines are preferably pre-marked in the material, for example by performing a creasing to reduce locally the stiffness of the material and thus forming a preferred line of folding.

In the illustrated example, the four panels are rectangular or square, the first and the third panels being of the same dimensions and the third and fourth panels being of the same dimensions. Each side panel thus has a lower edge 211, 221, 231, 241 and an upper edge 212, 222, 232, 242 which extend perpendicularly to the vertical direction of the fold lines 30, 31, 32, 33. The notions of "Lower" and "higher" are arbitrary notions relating solely to the arbitrary vertical orientation illustrated in the figures, not intended to limit the scope of the invention. In the blank 10 flat, the lower edges are aligned on the same lower line and the upper edges are aligned along the same upper line.

In the final package 15, the side panels 21, 22, 23, 24 of the main body 14 are intended to form a tubular casing portion, here rectangular in cross section, open at both axial ends in the vertical direction.

The main body 14 comprises for example at least one bottom panel, which in the final packaging 15, is intended to close at least partially an open axial end of the tubular casing portion defined by the side panels 21, 22, 23 24. In this embodiment, the main body 14 actually comprises four bottom panels 41, 42, 43, 44 which are each respectively connected to one of the side panels, along the lower edge 211, 221, 231 241 thereof, the lower edge of each side panel having for example a crease for forming a fold line between the bottom panel and the corresponding side panel. In this example of a final package 15, these bottom panels 41, 42, 43, 44 are intended to be folded in a plane perpendicular to the side panels, with at least partial overlap of the bottom panels between them to form the bottom of packaging. In the example shown on the figures 1 and 2 , The four bottom panels 41, 42, 43, 44 have a shape, and are intended to be joined together during a shaping step, able to form an automatic background, whose principle in itself is known to those skilled in the art. In such an automatic bottom, which is found in the packages described in the "FECO code", in particular under the references 0700 to 0703 or 0711 to 0714, the setting in volume of the tubular envelope part of the packaging causes automatically setting up the bottom panels. However, the invention is not limited to flat precursors and packaging having an automatic bottom. The bottom of the package 15 could be reported separately, the blank 10 then having no bottom panel, the latter possibly forming part of a separate blank. Alternatively, the bottom of the package 15 could be made according to any known embodiment of a bottom in which at least one bottom panel is part of the blank for forming the side panels of the main body of the package, such as in the exemplary embodiments of figures 8 and 9 . In the example shown in Figures 1 to 7 , A first bottom panel 41, which is connected to the lower edge 211 of the first side panel 21, and has a dimension substantially equal to the cross section of the tubular shell portion formed by the four side panels 21, 22 , 23, 24 of the final packaging.

The main body 14 is thus brought to define, after assembly formatting and after setting volume, as can be seen for example on the Figures 4 to 6 , an envelope having, in this example, an opening which is delimited in this case by the upper edges 212, 222, 232, 242 of the side panels 21, 22, 23, 24. In the example illustrated, and taking again the arbitrary conventions mentioned above, the upper edges then define a horizontal plane perpendicular to the vertical direction of the fold lines 31, 32, 33, 34 which delimit the side panels 21, 22, 23, 24.

The invention could be implemented in a package in which the blank 10 of the main body does not comprise an upper panel for closing off the opposite axial end of the tubular envelope portion of the package. In this case, the packaging could be have a separate lid, made from a third blank of materials.

However, in the illustrated embodiment, the blank 10 of the main body 14 has at least one upper panel, in this case four upper panels 51, 52, 53, 54 which are each respectively connected to one of the side panels 21 , 22, 23, 24, along the upper edge 212, 222, 232, 242 thereof, these upper edges having for example a crease for forming a fold line between the top panel and the corresponding side panel. In the final packaging 15, these upper panels 51, 52, 53, 54 are intended to be folded in a plane perpendicular to the side panels 21, 22, 23, 24, with at least partial overlap of the upper panels between them to form a packaging lid.

In addition, in the illustrated embodiment, there is provided a device, known per se, which aims to limit the possibility of accessing the internal volume without opening, for example similar to what is found in the type of packaging FEFCO 0226. This device comprises intermediate upper panels 61, 62, 63, 64, of triangular shape, each intermediate upper panel being arranged between two adjacent upper panels 51, 52, 53, 54 , and being connected to the respective adjacent edges of these two adjacent top panels. When closing the package, these intermediate panels 61, 62, 63, 64 fold back between the two adjacent adjacent upper panels, forming, during closure, the central branch of a Z which is small to small flattened until the three panels are substantially parallel and in contact with each other.

Furthermore, in this embodiment, a first of said upper panels, the one 51 which is attached to the first side panel 21, has dimensions substantially equal to the cross section of the tubular casing portion formed by the side walls in the housing. final packaging so as to form a lid of the package. This first top panel, which can be described as principal, presents, at an edge 57 opposite the upper edge 212 of the first side panel 21, a locking tab 55 which is articulated with respect to the first upper panel 51, along the edge 57, and which is intended to engage in a locking slot 56 provided in a third lateral panel 53, opposite to the first upper panel 51. The locking slot 56 is arranged at the upper edge 232 of the third side panel 23 to which this third upper panel 53 is attached. Moreover, still at the edge 57 opposite the edge of the first side panel 21, a locking flap 58 is hinged along the edge 57 and is provided with a self-adhesive strip 59 by which the locking flap 58 is intended to lock on an outer face of the first side panel 23 when closing the package, as illustrated in FIG. figure 7 .

However, the invention could also be implemented with lower closure panels of simpler design, including those found in standard packages described in the FEFCO Code.

In general, the invention can be implemented in the context of a flat precursor for producing packaging whose main body will be identical or similar to the packages described in the "FEFCO code", in particular those described under references 0200 to 0231, 0303 to 0304, 0308, 0309, 0420 to 0430, 0448, 0449 or derived therefrom. However, the invention will find a very particular application in the context of a flat precursor for the realization of a package whose main body 14 will be identical or similar to the ready-to-use glued boxes belonging to the series 0700 of " Code FEFCO ", or derived from them.

• un panneau de calage 70 qui présente un bord de fixation 72 et un bord libre 74 ;
• au moins un rabat de fixation 76 qui est relié le long du bord de fixation 72 du panneau de calage 70 à une première zone d'adaptation 78 du panneau de calage 70, la première zone d'adaptation 78 étant pourvue d'une série de rainages adjacents 781, 782, 783, 72 et le rabat de fixation 76 étant destiné à être assemblé sur au moins une face interne d'un panneau du corps principal du précurseur, en l'occurrence le premier panneau latéral 21 pour l'exemple illustré ; et

au moins une patte de verrouillage 80 qui est reliée le long du bord libre 74 du panneau de calage 70 à une deuxième zone d'adaptation 82 du panneau de calage 70, la deuxième zone d'adaptation 82 étant pourvue d'une série rainages adjacents 821, 822, 823, 74 et la patte de verrouillage 80 étant de préférence munie d'un moyen de verrouillage du volet de calage, comme par exemple une bande autocollante 84. D'autres moyens de verrouillage peuvent être envisagés, comme par exemple une languette de verrouillage ou tout autre aménagement permettant d'assurer un maintien du panneau de calage dans une position de calage, par exemple par encliquetage et/ou coopération de forme.The blank 12 intended to form the wedging flap 16 has:

• a timing panel 70 which has an attachment edge 72 and a free edge 74 ;
• at least one fastening flap 76 which is connected along the fastening edge 72 of the stitching panel 70 to a first matching zone 78 of the stitching panel 70, the first matching zone 78 being provided with a series of adjacent creases 781, 782, 783, 72 and the fastening flap 76 being intended to be assembled on at least one inner face of a panel of the main body of the precursor, in this case the first side panel 21 for the example illustrated; and

at least one locking lug 80 which is connected along the free edge 74 of the chockboard 70 to a second matching zone 82 of the chockboard 70, the second matching zone 82 being provided with a series of adjacent creases 821, 822, 823, 74 and the locking tab 80 is preferably provided with a locking means of the wedging flap, such as for example a self-adhesive tape 84. Other locking means can be envisaged, such as for example a locking tab or any other arrangement to ensure a maintenance of the setting panel in a staggered position, for example by snapping and / or form cooperation.

The locking means are preferably provided to cooperate with a separate envelope panel of the envelope panel on which the fastening flap 76 of the setting flap 16 is fixed , for example an opposite shell panel.

In the example illustrated, the blank 12 intended to form the wedging flap 16 is distinct from the blank 10, that is to say the blank or blanks (s) to form the side panels of the main body 14 of the packaging. Preferably, the blank 12 for forming the wedging flap 16 is distinct from any blank intended to form the envelope panels of the main body 14 of the package.

For the implementation of the invention, it will be advantageously provided that, when the wedging flap 16 is assembled to the first blank 10 of the main body 14 by the fastening flap 76, the wedging panel 70, including its two zones 78, 82, and the locking tab 80 remain free, not fixed to the first blank 10. Preferably, this characteristic is found not only after the first step of assembling the two blanks 10, 12 which makes it possible to obtain the flat precursor 13, as shown in FIG. figure 2 But also after the forming of joining step that allows to obtain, for certain packaging models, the flat-folded precursor 13 as shown in FIG. figure 3 , and also after the step of setting volume which makes it possible to obtain the package 15, open, as illustrated in FIG. figure 4 .

In the exemplary embodiment illustrated on the Figures 1 to 7 , the blank 12 of the locking flap 16 further comprises three extension panels 762, 763, 764 which are delimited successively relative to each other by parallel fold lines. As we see on the figure 2 These extension panels are intended to come in each liner, at least partially, respectively the second 22, third 23 and the fourth side panel 24 of the main body 14. They can be thus each assembled, for example by gluing, on an inner face of the corresponding panel. It is therefore understood in this case that the geometry of the extension panels 762, 763, 764, and the arrangement of the successive parallel fold lines which delimit them from each other and with respect to the fastening flap 76, are such that the fold lines which delimit the extension panels correspond to the fold lines 31, 32, 33 which delimit the side panels 21, 22, 23, 24 of the main body 14. In the example illustrated, the extension panels 762, 763, 764 have substantially the same geometry as the side panels 22, 23, 24 corresponding so that they double these panels, thereby reinforcing the strength of the side panels, and therefore overall that of the package. However, the presence of these extension panels is not necessary for the invention, and it would be possible to provide a wedging flap 16 not including these extension panels, as in the exemplary embodiments of FIGS. figures 8 and 9 , or with less or with extension panels arranged differently.

As can be seen on the figure 2 In the embodiment shown, the wedge component 16 is intended to be assembled on the main body 14 such that the attachment edge 72 of the setting panel 70 is arranged parallel to the upper edge 212 of side panel 21 of which it is fixed. It will be seen that the fixing edge 72 of the wedging panel 70 is offset from the upper edge 212 of the side panel 21, direction of the lower edge 211 of the side panel. This offset preferably represents at least 20% of the distance between the upper edge 212 and the lower edge 211 of the side panel 21, more preferably at least 40% of this distance.

In the example illustrated, the free edge 74 of the timing panel 70, at which the locking tab 80 is connected, is parallel and opposite to the fixing edge 72. However, it could be provided that the timing panel is provided with a locking tab which would for example be connected to one of the lateral edges 86 of the wedging panel 70 which extend perpendicularly to the fastening edge 72 of the wedging panel 70, by an adaptation zone of the wedging panel 70 provided of a series of adjacent creases.

In the illustrated example, the fastening edge 72 and the free edge 74 are each provided with a crease, to form a fold line between the stitching panel 70 and, respectively, the fastening flap 76 and the locking tab. 80. It is understood that, the fastening flap 76 being fixed on the internal face of a side panel of the main body 14, the wedging panel 70 can be brought in different configurations relative to the main body 14. This is called inner face a face of a panel of the main body, in particular of a side panel, which, when the packaging coming from the blank and therefore from the precursor has been put in volume, as Figures 4 to 7 , is turned towards the internal volume delimited by the lateral faces of the main body.

For each adaptation zone 78, 82 of the wedging panel 70, the creases make it possible to adapt the shape of the adaptation zone to easily bring it into multiple geometric configurations. Thus, the fastening flap 76 and / or the locking lug 80 can adopt a greater variety of configurations, in terms of position and orientation in space with respect to a center portion of the cushioning panel between the first and the second adaptation zone, with a simple articulation around a simple fold line.

The adjacent creases of an adaptation zone are offset from each other in a direction perpendicular to their direction of extension.

According to a preferred characteristic, at least some of the creases of an adaptation zone may be parallel to each other, as in the case illustrated. Failing to be parallel, the adjacent creases of an adaptation zone preferably have a common general orientation so as not to cut, except possibly at their end. The offset between two adjacent creases of an adaptation zone may be constant for all the adjacent creases of the zone, as in the example illustrated, or on the contrary, it may not be constant, with for example a a shift that increases or decreases between two creases when moving away from or approaching the fastening edge or the free edge.

Preferably, the creases of the first adaptation zone 78 are parallel to the fastening edge edge 72.

The first adaptation zone 78 extends, in a direction perpendicular to the fastening edge 72, from the fastening edge 72 towards a central portion of the fastening panel 70. In the illustrated example, the first zone The adapter 78 has a dimension, in the direction perpendicular to the fastening edge 72, which is preferably between 10% and 40% of the size of the timing panel 70 in that direction.

Preferably, the creases of the second adaptation zone 82 are parallel to the free edge edge 74.

The second adaptation zone 82 extends, in a direction perpendicular to the free edge 74, from the free edge 74 in the direction of the central portion of the wedging panel 70. The second adaptation zone 82 may have a dimension, according to the direction perpendicular to the free edge 74, which is preferably between 10% and 40% of the dimension of the wedging panel 70 in this direction.

In the illustrated example, the first adaptation zone 78 extends over the entire length of the fixing edge 72. Similarly, the second adaptation zone 82 extends over the entire length of the free edge 74.

Preferably, the creases of an adaptation zone extend, in the direction of their length, across the whole of the adaptation zone, thus joining two opposite edges 86 of the wedging panel 70, from and further according to the direction of extension of creases, the portion of the blank 12 in which is formed the adaptation zone. The opposite edges 86 are edges of the chock panel which are distinct from the fastening edge 72 and the free edge 74.

In the example illustrated, the wedging panel is rectangular when it is flat, so that the opposite edges 86 are edges perpendicular to the fixing edge 72 of the wedging panel 70.

In the illustrated example, the first 78 and the second 82 adaptation zone have a similar arrangement and each comprise at least three adjacent creases in the material, in this case four adjacent creases, counting respectively the fixing edge 72 and the free edge 74. Each adaptation zone 78, 82 is connected to a central portion of the wedging panel 70 by internal creasing 781, 821, and, respectively to the fastening flap 76 or to the locking lug 80, by external creasing. which corresponds in this example respectively to the fixing edge 72 and the opposite edge 74. Each adaptation zone 78, 82 also has at least one intermediate crease, in the example two intermediate creases 782, 783, 822, 823, arranged between the internal creases 781, 821 and external 72, 74. In this way, an adaptation zone may take a configuration such that it has an S-shaped profile when seen in section through a plane perpendicular to one of its spokes. medley.

According to another preferred feature, at least some of the adjacent creases 72, 781, 782, 783, 74, 821, 822, 823, of the same adaptation zone 78, 82 may extend along straight lines, preferably lines parallel lines as in the example shown. In the case where the adaptation zone 78, 82 is formed in a semi-rigid material, it thus facilitates the establishment of the adaptation zone in a suitable configuration, without excessive effort and limiting parasitic deformations.

In the example illustrated, the fixing edge 72 and the free edge 74 are opposite and parallel, so that the central portion of the panel is the portion of the blocking panel 70 which is between the first 78 and the second 82 zone. 'adaptation. Depending on the size of the first 78 and second 82 adaptation zone, the central portion of the wedging panel is more or less extended. At the limit, the size of the central portion of the blocking panel 70 is reduced, or even zero. In this case, the two adaptation zones 78, 82 are contiguous at their respective internal creasing, and adjacent grooves first 78 and second 82 may be distributed over the entire timing panel 70 in a regular manner.

In the illustrated example, at least some of the adjacent creases of an adaptation zone are parallel to the fixing edge of the wedging panel 70.

In the example shown, the adjacent grooves 781, 782, 783, 72 of the first adaptation zone 78 are parallel to the creases 821, 822, 823, 74 of the second adaptation zone 82. 16 can be easily configured to have a cylindrical shape, in the sense of a shape generated by the circulation of a straight line along a curve, this curve not necessarily being a circular curve, the shape being therefore not necessarily a form of revolution. However, a wedging flap comprising only adaptation zones having parallel creases allows only a two-dimensional adaptation of the flap configuration.

Also, advantageously, it can be provided that the wedging panel comprises at least one oblique score 90, 92, 94, 96, distinct from the adjacent creases which extends across the wedging panel, and which forms, with respect to a direction the fixing edge of the wedging panel, an acute angle, preferably between 10 ° and 80 °, more preferably between 25 ° and 65 °. In this way, the presence of at least one oblique crease will allow a three-dimensional adaptation of the flap configuration in space. For the case where the fixing edge 72 would not be rectilinear, the direction of the fastening edge 72 considered may be defined as the tangent to the fastening edge 72 in the center thereof.

Advantageously, such an oblique crease 90, 92, 94, 96 extends from a central zone 825 of the second adaptation zone 82.

The central zone 825 of the second adaptation zone 82 is a zone which, in a first direction, lies between the internal crease 821 and the external crease 74, and which, according to the crease direction of the second adaptation zone , extends over 75%, preferably 50%, more preferably 33% of the length of the creases, equidistant from the end of the creases in their direction of extension. In the example illustrated, the central zone 825 must be considered as extending equidistant from the opposite lateral edges 86 of the timing panel 70, on either side, in the direction of extension of the creases, of the portion of the blank 12 in which the second adaptation zone 82 is formed .

In the illustrated example, an oblique score 90, 92, 94, 96 extends towards a lateral edge 86 of the timing panel 70 distinct from the fastening edge 72 and the free edge 74. As in the illustrated example the oblique crease 90, 92, 94, 96 may open into that of the opposite edges 86 towards which it is directed. However, the oblique crease could be interrupted before reaching the opposite edge 86 towards which it is directed. In the illustrated example, the oblique creases 90, 92, 94, 96 do not intercept the first adaptation zone 78. However, alternatively, while being directed towards an opposite edge 86 of the timing panel 70 , an oblique score, or more, could (in) t intercept the first zone 78 of adaptation.

However, preferably, the wedging flap 16 does not comprise a single oblique crease but several oblique creases 90, 92, 94, 96, preferably even several series oblique creases.

Thus, in the figures, it can be seen that the wedging flap 16 comprises a first series of oblique creases, having at least a first primary oblique crease 90 which extends from the central zone 825 of the second adaptation zone 82. direction of a first side edge 86 of the panel rigging 70. This first series comprises at least a first secondary oblique score 92 which also extends from the central zone of the second area of adaptation towards the same first side edge 86, the first primary scoring 90 and first secondary creasing 92 being distinct. The presence of several oblique creases allows of course more varied configurations for the wedging flap.

The primary creasing and the secondary creasing of the same series are shifted in a direction perpendicular to a direction of extension of the primary creasing. Oblique creases of the same series may be parallel. However, preferably, as in the example illustrated, the primary crease 90 and the secondary crease 92 have extension directions that form an angle, for example between 5 ° and 25 ° with a fan arrangement. This arrangement is particularly adapted to facilitate the enveloping of objects of various shapes. Preferably, the set of oblique creases of the same series are included in a fan whose angle is less than 45 degrees.

In the illustrated example, the wedging flap comprises at least two oblique grooves which extend from the central zone of the second adaptation zone in opposite directions with respect to a median plane of symmetry passing through the center of the free edge. 74. Thus, the wedging flap 16 comprises, in addition to first oblique grooves 90, 92 which extend from the central zone 825 of the second adaptation zone towards a first lateral edge 86 of the wedging panel 70 , distinct from the fixing edge 72 and the free edge 74, at least one second oblique crease, and in the example shown, a second oblique primary crease 94 and a second oblique secondary crease 96, which each extend from the central zone 825 of the second adaptation zone 82 towards a second lateral edge 86, opposite the first lateral edge 86, of the wedging panel 70. The second oblique grooves 94, 96 form a second series of oblique creases. The second series of oblique creases is advantageously arranged symmetrically with the first series of oblique creases 90, 92 by relative to a median plane of the timing panel 70 passing through the center of the free edge 74 and perpendicular thereto.

Preferably, at least one oblique crease, here in particular the primary oblique creases 90, 94 of each series, extend over almost the entire extent of the wedging panel between the free edge and the fixing edge. Preferably, in projection on a direction perpendicular to the fastening edge 72, at least one oblique crease, here in particular the primary oblique creases 90, 94 of each series, extends (ent) over more than 60% of the dimension of the panel wedging between its fixing edge 72 and its free edge 74 in this direction. Thus, the adaptation of the internal volume 17 allowed by this or these creasing (s) oblique (s) relates to a larger part of the internal volume of the package 15.

In the example illustrated, it is advantageously provided that a first oblique crease 90, 92 and a second oblique crease 94, 96 intersect at least one same crease 821, 822, 823 of the second adaptation zone 82, respectively in one first point of intersection I1 and a second point of intersection I2, indicated more particularly on the Fig. 3 . In this case, a first oblique crease 90, 92 and a second oblique crease 94, 96 intersect several distinct creases 821, 822, 823 of the second adaptation zone 82. In the example, at least one creasing, here the external creasing 74, is not intercepted by an oblique crease.

Advantageously, the first point of intersection I1 and the second point of intersection I2, illustrated in particular in FIG. figure 5 , delimit, in the same crease of the second adaptation zone 82, a section I1-I2 of the creasing along which the material is partially cut or completely cut throughout its thickness.

Partial cutting means in particular that, over the length of the section I1-I2, the material may not be completely cut. Thus, in a partial cut, on at least a portion of the length of a section I1-I2, the material of the blank may not be cut or not entirely cut on its thickness. On such a portion not entirely cut, the material can be cut on only part of its thickness, as in a cut "half-flesh", or not cut at all. If the not completely cut portion of the section I1-I2 is cut over a part of its thickness, this portion of the section I1-I2 may extend over the entire length of the section I1-I2 considered. The partial cut may comprise portions of the section I1-I2 entirely cut through the entire thickness, separated by uncut portions or not entirely cut on the thickness.

Along a partial cutout delimiting between them two areas of the material, the two areas of the material are initially bonded to each other along one or more portions not cut or not completely cut. However, these two zones are likely to separate along the partial cut, preferably under a moderate effort of the user, here during the deformation by the user of the wedging flap to adapt the geometry of the shutter to an object to stall. The separation results from the breaking of the uncut portions or not completely cut. The separation is planned to follow the geometry of the partial cut.

This partial cutting or cutting over the entire thickness provides additional flexibility, in the area of the cut section I1-I2, which facilitates the three-dimensional shaping of the wedging panel by folding the wedging panel at a time according to the adjacent creases of the adaptation zone and according to oblique creases. These two types of creases are indeed not parallel, and are concurrent in the second adaptation zone 82. In the illustrated example, at least one oblique crease 92 of the first series and an oblique crease 96 of the second series intercept three adjacent creases, defining in each of these adjacent creases three adjacent sections I1-I2 along which the material is cut through its entire thickness. These three adjacent sections I1-I2 thus delimit two adjacent compensation strips 100, formed from the material of the blank 12. The compensation strips 100, here parallel, are only connected, possibly after breaking the partial cuts, by their ends, at the ends. level of the points of intersection I1 and I2, to the rest of the material of the adaptation zone 82. These compensation bands 100 are then capable of shifting relative to each other in the direction of the thickness of the material to facilitate three-dimensional shaping of the shimming panel, by simultaneous folding along the adjacent creases of the adaptation zone 82 and along the oblique grooves of the wedging panel 70. These cut or partially cut sections I1-I2, and therefore the parallel strips 100 which they delimit, are advantageously arranged in the central zone 825 of the adaptation zone 82.

A method of manufacturing a preassembled flat precursor for a package according to the invention comprises a step of cutting at least a first continuous blank 10 into a sheet of material to form a main body 14 of the precursor having panels envelope, for example side panels 21, 22, 23, 24, and optionally at least one bottom panel 41, 42, 43, 44. This step is generally carried out flat. This step may comprise the realization of creases which aim to predetermine the fold lines for the realization of the precursor and the packaging.

• un panneau de calage 70 qui présente un bord de fixation (72) et un bord libre (74); et
• au moins un rabat de fixation (76) qui est relié le long du bord de fixation (72) du panneau de calage à une première zone d'adaptation (78) du panneau de calage (70), la première zone d'adaptation (78) étant pourvue d'une série de rainages adjacents (72, 781, 782, 783) ; et
• au moins une patte de verrouillage 80 qui est reliée le long du bord libre (74) du panneau de calage (70) à une deuxième zone d'adaptation (82) du panneau de calage (70), la deuxième zone (82) d'adaptation étant pourvue d'une série de rainages adjacents (74, 821, 822, 823).

Simultaneously, or successively, in an indifferent order, it comprises a step of cutting at least a second continuous blank 12, distinct from the first blank 10, in a sheet of material to form at least one wedging flap 16 having:

• a timing panel 70 having an attachment edge (72) and a free edge (74); and
• at least one fastening flap ( 76 ) which is connected along the fixing edge ( 72 ) of the wedging panel to a first adaptation zone ( 78 ) of the wedging panel ( 70 ), the first adaptation zone ( 78 ) being provided with a series of adjacent creases ( 72, 781, 782, 783 ); and
• at least one locking lug 80 which is connected along the free edge (74) of the wedging panel (70) to a second adaptation zone (82) of the wedging panel (70), the second region (82) of the adapter being provided with a series of adjacent creases (74, 821, 822, 823).

The flap 76, the wedging panel 70 and the one or more locking lugs 80 are in particular defined between them in the second blank by performing creases.

Starting from these two blanks 10, 12, still flat, we proceed to a step of assembling the fastening flap 76 of the wedging flap 16 on an inner face of a panel of the main body 14, the two blanks then being superposed flat on one another according to the direction of their thickness, for example by gluing. Such an operation, flat, is easily performed on industrial equipment at high speed, fully automatically, so low cost and with high accuracy. In the exemplary embodiment illustrated, the extension panels 762, 763, 764 can be glued to the corresponding side panels 22, 23, 24 during the same step.

This assembly operation of the fastening flap 76 of the wedging flap 16 on an inner face of a panel of the main body 14 provides a flat precursor according to the invention.

The method may comprise a step of folding the main body 14 and a step of joining at least one of the side panels to another panel by a shaping junction. During this step, the wedging flap 16 can also be folded, especially in the case where, as in the illustrated embodiment, extension panels 762, 763, 764 may require folding, especially around a fold line between the third and the fourth extension panel.

The shaping junction between two panels of the main body 14 is for example a junction which locks an edge of one of said panels in coincidence with another edge of the other of said panels, the two edges being disjoint and remote from each other in the first blank, at least as long as the blank is flat before folding. In other words, this shaping junction makes it possible to pass from a precursor 13 which extends flat to a precursor 13 which is only flat by the fact that two panels are folded one on the other.

In the illustrated example, the shaping junction implies that the joining lug 18 is assembled, for example by gluing, on the fourth panel 24, in the vicinity of the vertical end edge 34 of the fourth panel 24. This step of shaping can be anterior or simultaneous to a folding step of the main body 14 of the flat precursor, in particular with at least two adjacent panels folded flat on one another.

In the particular case illustrated Figures 1 to 7 , the formatting junction step may advantageously also include the step assembling some of the bottom panels 41, 42, 43, 44 together to form an automatic bottom. Similarly, the forming junction step may comprise a step of assembling the first upper panel 51 with one of the intermediate upper panels 64, by means of a junction tab 65.

In the context of the implementation of the invention for a package of the type known in the "FEFCO code" for example under the references 0303 or 0304 or 0308 or 0309, the forming step, by bonding the corners, may also be prior to or simultaneous with the folding step during which the side panels are folded flat facing the bottom panel, The step of assembling the fastening flap 76 of the blank 12 of the wedging flap 16 on an inner face of a panel of the main body 14 is prior to the folding step of the main body 14 of the flat precursor 13. In other words, the step of assembling the blank 12 of the locking flap 16 with the blank 10 of the main body 14 is a step in the manufacturing process of the precursor flat 13. This assembly is likely to be carried out in the precursor manufacturing plant, before it is delivered to an end-user, who may as well be a user professional or an individual. It is therefore noted that the wedging flap is a flat element, which allows it to be integrated in a flat precursor, which can be transported and transported in acceptable economic conditions.

In addition, this step of assembling the wedging flap 16 on the main body 14, which is part of the manufacturing process of the flat precursor 13, makes it possible to ensure that each main packaging body is well associated with a flap. calibration, without the end user having to provide for the supply of the two objects separately. This preassembled precursor, comprising the main body 14 and the wedging flap 16 assembled, thus simplifies the process of supplying the end user. In addition, the assembly of the wedging flap 16 and the main body being ensured during the manufacturing process of the preassembled precursor, it can be provided in the factory on specific machines that guarantee correct positioning and solid assembly, with minimal dispersion and errors. This prior assembly saves time in the implementation of the packaging at the end user.

In the example illustrated in the figures, the shaping step of the flat precursor comprises all the joining steps during which it is necessary to glue or staple panels to each other, except for a locking step. upper panels 51 to close access to the internal volume of the package. This is because the package is designed with an automatic bottom.

To achieve the package 15, it is therefore necessary first to implement the manufacture of a precursor flat as defined above, and it is necessary to provide a subsequent step of volume development of the package by unfolding the precursor dish. In the exemplary embodiment of Figures 1 to 7 , the step of setting volume of the package, which is the step for passing from the precursor to flat as illustrated in the figure 3 volume packaging as illustrated in the figure 4 is a step that does not require a bonding operation or stapling and can therefore be performed very simply, without special knowledge or possibly without special tools. It is the same for the exemplary embodiment of the Figure 8 . This volume step does not include any step of assembling a calibration flap that would be provided separately to the end user.

Once put in volume, the packaging 15 delimits an internal volume 17 open, here upwards, and thus allowing the introduction of an object inside the internal volume 17 through the opening 19 of this volume. which is delimited by the upper edges 212, 222, 232, 242 of the lateral panels of the main body 14.

Once the object has been introduced into the internal volume 17, the wedging panel 70 can be brought into a configuration as illustrated in FIGS. figures 5 and 6 by folding it around one or more of the adjacent creases of each adaptation zone 78, 82, and possibly folding around one or more of the oblique creases 90, 92, 94, 96. The timing panel 70 then extends substantially across the internal volume 17 of the package 15, generally of the panel 21 to which it is attached, to an opposite panel 23 of the shaped packaging, by trapping the object between the bottom of the package and the face of the timing panel which is turned towards this bottom. In the illustrated example, the wedging panel 70 extends substantially horizontally across the internal volume 17, from the inner face of the first side panel 21 towards the inner face of the third side panel 23 which faces it.

It is therefore generally understood that the wedging panel 70 delimits in the internal volume 17 a reduced internal volume between the wedging panel 70 and the bottom of the package defined by the bottom panels 41, 42, 43, 44.

We see in particular the Figures 4 to 6 that the locking tabs 80 can be folded so that their face bearing the locking means, made for example in the form of adhesive tape 84, can be applied against the inner face of an envelope panel of the packaging, for example a side panel, and, in the example, an opposing side panel 23, for locking the wedging panel 70, that is to say, maintain its free edge 74 in a fixed position relative to the main body 14. In this case, as can be seen from the figures 5 and 6 , the locking tabs 80 are locked indirectly on the inner face of the opposite shell panel 23, with interposition of the extension panel 763 which forms a lining of this panel on the inside.

Note that the developed length of the chockboard 70 comprising the two adaptation zones 78, 82, in the direction separating here the first side panel 21 of the third panel 23 when the packaging is volume, is greater than the distance between this first lateral panel 21 and this third lateral panel 23. According to this dimension, the cumulative length of the adaptation zones 78, 82 and of the central portion of the blocking panel 70 could be distributed differently, for example with the central portion of the panel narrower wedge in this direction and one or both of the more long in this direction. In this case, it will advantageously be provided that a longer adaptation zone has more adjacent creases in order to preserve this adaptation zone its ability to adapt to the shape of the object or objects intended to be wedged in the internal volume. 17.

The deformation of the adaptation zones 78, 82 by folding along the adjacent creases makes it possible to adapt the height position of the wedging panel 70 in the internal volume.

The deformation of the stitching panel 70 by folding along oblique creases 90, 92, 94, 96 makes it possible to adapt the dimension of the internal volume in a direction substantially perpendicular to their orientation.

The invention is not limited to the examples described and shown because various modifications can be made without departing from its scope.

For example, in the embodiment described above, the fixing flap 76 of the wedging flap is fixed against the internal face of a side panel of the main body 14. Advantageously, the fastening flap 76 of the wedging flap is attached to the inner face of the side panel 21 from an upper edge of which extends the main top panel 51 which has dimensions substantially equal to the cross section of the tubular casing portion formed by the side walls in the final package. By this arrangement, the wedging flap 16 and the upper cover panel 51 are intended to be folded in a substantially similar movement during the packaging operation. However, in other embodiments, the fastening flap could for example be attached to another of the side panels of the main body 14, for example separate from that which may be connected to an upper panel, or a bottom panel for example on the first bottom panel 41. In this case, it can be provided that the adaptation areas 78, 82 have a larger dimension in the direction perpendicular to the extension of the adjacent creases, and / or that the portion central panel calibration has a larger dimension in the same direction.

The figures 8 and 9 illustrate embodiments that differ essentially in that the main body 14 is intended to form a different type of packaging than that illustrated in the embodiment of the invention. Figures 1 to 7 . However, elements similar to those described above are designated by the same reference numbers and will not be described in detail. In these two embodiments, the blank 12 of the wedging flap 16 is identical to that described above, except that it may have different dimensions and it does not include extension panels.

We illustrated on the figure 8 a flat precursor 13 according to the invention, in which a wedging flap 16 is assembled by fixing the fastening flap 76 to a blank 10 of the main body 14 intended to form a package of the FEFCO 427 type, perfectly known to the man of career. It should be noted that, in the blank 10 illustrated on the figure 8 , the side panels 21, 22, 23, 24 are not interconnected, but are connected to a single bottom panel 41 by their respective lower edges 211, 221, 231, 241, corresponding to each of the 4 sides of the panel. bottom 41. it is noted that, in this case, the precursor 13 is not intended or to undergo a shaping joining operation or a flat folding operation. The implementation of the package is here in the form of a volume-forming operation which includes forming junction operations, the latter may involve only folding and nesting / latching operations. In particular, in known manner, connecting lugs 19 connected to two opposite side panels 21, 23 are intended to be trapped between the inner face of one of the other two side panels 22, 24 and one of two joining flaps 19 'associated with such other side panel 22, 24.

We illustrate on the figure 9 a flat precursor 13 according to the invention, in which a wedging flap 16 is assembled by fixing the fastening flap 76 to a blank 10 of the main body 14 intended to form a package of the FEFCO 201 type, perfectly known to the man of career. Such precursor flat preassembled 13 according to the invention can be delivered to dish in this form to an end user. However, preferably, the flat precursor will be delivered after having undergone a shaping juncture operation, by gluing the joining lug 18 to the side panel 24, and / or a flat folding operation, which may be concurrent.

Claims (17)

1. A flat precursor for a package (15), of the type including a main body (14), having envelope panels (21, 22, 23, 24, 41, 42, 43, 44, 51, 52, 53, 54) defining at least part of an envelope of the package, obtained from at least a first continuous blank (10) cut from a sheet of material, and of the type in which the precursor is flat,
   where the flat precursor includes at least one shim flap (16) that is obtained from at least one second continuous blank (12) cut from a sheet of material, separate from the first sheet (10), characterized in that the shim flap (16) has:

   - a shim panel (70) that has a fastening edge (72) and a free edge (74);

   - at least one fastening rebate (76) that is connected along the fastening edge (72) of the shim panel to a first adaptation zone (78) of the shim panel (70), the first adaptation zone (78) being provided with a series of adjacent scorings (72, 781, 782, 783), and the fastening rebate (76) being assembled on at least one inner face of a panel (21) of the main body of the precursor (13); and

   - at least one locking tab (80) that is connected along the free edge (74) of the shim panel (70) to a second adaptation zone (82) of the shim panel (70), the second adaptation zone (82) being provided with a series of adjacent scorings (74, 821, 822, 823).
2. The flat precursor according to claim 1, characterized in that the first and/or the second adaptation zone (78, 82) includes at least three adjacent scorings in the material, in that it is connected to a central shim panel portion (70) by an inner scoring (781, 821) and to the fastening rebate (76) or to the locking tab (80) by an outer scoring (72, 74), and in that it has at least one intermediate scoring (782, 783, 822, 823) arranged between the inner and outer scorings.
3. The flat precursor according to one of claims 1 or 2, characterized in that at least some of the adjacent scorings (72, 781, 782, 783, 74, 821, 822, 823) of an adaptation zone (78, 82) extend parallel to the fastening edge (72).
4. The flat precursor according to one of claims 1 to 3, characterized in that the adjacent scorings (72, 781, 782, 783) of the first adaptation zone (78) are parallel to the adjacent scorings (74, 821, 822, 823) of the second adaptation zone (82).
5. The flat precursor according to one of claims 1 to 4, characterized in that the shim flap (16) includes at least one oblique scoring (90, 92, 94, 96) that extends through the shim panel (70) and that forms, relative to a direction of the fastening edge (72) of the shim panel (70), an angle, preferably comprised between 10° and 80°, more preferably comprised between 25° and 65°.
6. The flat precursor according to one of claims 1 to 5, characterized in that the shim flap (16) includes at least one oblique scoring (90, 92, 94, 96) that extends from a central zone (825) of the second adaptation zone (82).
7. The flat precursor according to claim 6, characterized in that the oblique scoring (90, 92, 94, 96) extends toward a lateral edge (86) of the shim panel (70), separate from the fastening edge (72) and the free edge (74).
8. The flat precursor according to one of claims 1 to 7, characterized in that the shim flap (16) includes at least one primary oblique scoring (90, 94) that extends from a central zone (825) of the second adaptation zone (82) toward a first lateral edge (86) of the shim panel (70), separate from the fastening edge (72) and the free edge (74), and at least one secondary oblique scoring (92, 96) that extends from the central zone (825) of the second adaptation zone (82) toward the same first lateral edge (86), the primary scoring and the secondary scoring being separate.
9. The flat precursor according to one of claims 1 to 8, characterized in that the shim flap (16) includes at least one first oblique scoring (90, 92) that extends from the central zone (825) of the second adaptation zone (82) toward a first lateral edge (86) of the shim panel (70), separate from the fastening edge (72) and the free edge (74), and at least one second oblique scoring (94, 96) that extends from the central zone (825) of the second adaptation zone (82) toward an opposite second lateral edge (86) of the shim panel (70), also separate from the fastening edge (72) and the free edge (74).
10. The flat precursor according to claim 9, characterized in that a first oblique scoring (90, 92) and a second oblique scoring (94, 96) intersect at least one adjacent scoring (821, 822, 823) of the second adaptation zone respectively at a first intersection point (I1) and a second intersection point (I2).
11. The flat precursor according to claim 10, characterized in that a first oblique scoring (90, 92) and a second oblique scoring (90, 92) intersect several separate adjacent scorings (821, 822, 823) of the second adaptation zone respectively at first intersection points (I1) and second intersection points (I2).
12. The flat precursor according to one of claims 10 or 11, characterized in that the first intersection point (I1) and the second intersection point (I2) delimit a segment (I1-I2) of an adjacent scoring (821, 822, 823) of the second adaptation zone (82), and in that, along said segment (I1-I2), the material is partially cut or cut over its entire thickness.
13. The flat precursor according to claim 11, characterized in that the first intersection points (I1) and the second intersection points (I2) delimit several adjacent segments (I1-I2) along which the material is partially cut or cut over its entire thickness.
14. The flat precursor according to one of claims 1 to 13, characterized in that the flat precursor is folded flat and has an envelope panel (21) that is attached to another envelope panel (24) by a shaping junction (18).
15. A method for manufacturing a preassembled flat precursor for a package according to any one of claims 1 to 14, of the type including the following steps:

    a) cutting at least a first continuous blank (10) from a sheet of material to form the main body (14) of the precursor (13) having envelope panels (21, 22, 23, 24, 41, 42, 43, 44, 51, 52, 53, 54),

    characterized in that the method includes the following steps:

    b) cutting at least one second continuous blank (12), separate from the first blank (10), from a sheet of material to form at least the shim flap (16) having:

    - at least one shim panel (70) that has a fastening edge (72) and a free edge (74); and

    - at least one fastening rebate (76) that is connected along the fastening edge (72) of the shim panel to a first adaptation zone (78) of the shim panel (70), the first adaptation zone (78) being provided with a series of adjacent scorings (72, 781, 782, 783); and

    - at least one locking tab (80) that is connected along the free edge (74) of the shim panel (70) to a second adaptation zone (82) of the shim panel (70), the second adaptation zone (82) being provided with a series of adjacent scorings (74, 821, 822, 823),

    c) assembling the fastening rebate (76) of the shim flap (16) on an inner face of a panel of the main body (14) of the precursor (13).
16. A method for manufacturing a package, characterized in that it includes a step for manufacturing a flat precursor (13) according to claim 15, and in that it includes a subsequent step for shaping the package (15) by unfolding the flat precursor (13).
17. A package obtained from a flat precursor according to any one of claims 1 to 14, or obtained from a flat precursor obtained by carrying out a method according to claim 15, or obtained by carrying out the method according to claim 16.

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