EP0489606B1 - Container obtained by folding a cut and scored blank - Google Patents

Abstract

The container is made from foldable material, such as cardboard, formed by folding a cut and scored blank which has, when it is constructed to form a volume, panels determined by free edges formed by cutting and/or scoring lines. It is characterised in that at least two panels (4-6-8-9 and 5-7-12-13) are triangular and, after folding, have to cover at least partially one or more of the panels (1-11-16) having to form adjacent faces of the container, means being provided for keeping the container in constructed and closed form. <IMAGE>

Description

The invention relates to a container obtained by placing in volume a cut and grooved blank, advantageously made of cardboard.

Containers of this type have been known for many years.

Most of the current boxes are made this way and are more or less luxurious depending on the products they contain.

It should nevertheless be remembered that in a given range, a container must be as cheap as possible and the effort of the creators and manufacturers consists, of course, in choosing shapes as simple as possible.

• lors de la fabrication des flans, ceux-ci sont découpés dans des plaques rectangulaires et, pour éviter les chutes, il faut placer le plus possible de flans côte à côte.
• lors du transport, les flans sont placés dans des caisses ou des enveloppes qui, elles aussi, sont parallélépipédiques.
• Lors du conditionnement, les flans sont dressés pour être mis en volume et l'on recherche un maximum de mécanisation qui, comme on le sait, est d'autant plus simple que les mouvements de pièces pour le pliage sont orthogonaux et il faut à tout prix éviter les réglages angulaires.
• Lors du transport des articles emballés, les contenants doivent occuper le minimum d'espace et se caler sans place perdue dans des caisses, boîtes ou conteneurs parallélépipédiques.

Several reasons combine to limit oneself, practically, to rectangular shapes:

• during the manufacture of the blanks, these are cut from rectangular plates and, to avoid falls, as many blanks must be placed side by side.
• during transport, the blanks are placed in cases or envelopes which, too, are parallelepiped.
• During packaging, the blanks are erected to be set in volume and we are looking for maximum mechanization which, as we know, is all the simpler when the movements of the parts for folding are orthogonal and everything is necessary price avoid angular adjustments.
• When transporting packaged items, the containers must occupy the minimum space and stall without lost space in boxes, boxes or parallelepipedic containers.

The exceptions to this rule are rare but, of course, there are also other containers intended for luxury products and which are very expensive: sidewalk boxes, bell covers etc. but they are not obtained by setting in volume a cut and grooved blank, so that there is no need to refer to them further since the invention relates exclusively to containers made from a cut and grooved blank.

• FR-A-2 053 427 qui décrit un étui en biseau pour des tubes de pâte, mais il faut remarquer que le "sommet ouvert" est carré ou rectangulaire et finalement cet étui est encore, géométriquement parlant, une fraction de parallélépipède rectangle. Aucune des faces de ce contenant n'est recouverte entièrement ou partiellement par des panneaux triangulaires.
• FR-A-2 579 567 qui décrit un contenant ayant un fond et une face supérieure parallèles réunis par des faces inclinées triangulaires dont les formes et les dimensions sont établies pour donner au contenant dressé une forme générale de pyramide tronquée. Le fond est de type courant, composé de quatre volets rabattus et bloqués au moyen d'une patte insérée sous le dernier volet rabattu, grâce à des encoches. Aucune des faces de ce contenant n'est recouverte entièrement ou partiellement par des panneaux triangulaires.
• FR-A-2 252 258 qui décrit un contenant prismatique dont une face est un fond sur lequel se retrouvent tous les moyens de fermeture, lesquels sont essentiellement constitués de pattes devant être insérées sous des rabats, cette mise en place étant facilitée par la présence d'encoches pour permettre de dresser les contenants de manière mécanique et automatique. Aucune des faces de ce contenant n'est recouverte entièrement ou partiellement par des panneaux triangulaires.
• NL-A-74/08 072 qui décrit aussi un contenant prismatique obtenu par soudure d'une gaine tubulaire et qui ne peut être ouvert que par une coupure définitive interdisant plusieurs ouvertures et fermetures successives. L'invention décrite consiste, d'ailleurs, à faciliter l'écrasement du contenant vide afin qu'il soit moins volumineux quand on s'en débarrasse. Aucune des faces de ce contenant n'est recouverte entièrement ou partiellement par des panneaux triangulaires.
• DE-U-05 558 qui décrit un contenant ayant la forme d'un parallélépipède rectangle. L'invention décrite permet d'accéder aux serviettes en papier après avoir arraché, suivant les lignes prédécoupées, une partie du contenant. Un couvercle étant fixé sur la face supérieure du parallélépipède permet une ouverture/fermeture multiple du contenant; dans la position fermé il recouvre entièrement la surface arrachée du contenat. Le couvercle ayant deux panneaux triangulaires, mais lesdits panneaux ne sont pas liés par des lignes de rainage communes.

The following documents can be cited:

• FR-A-2 053 427 which describes a beveled case for tubes of dough, but it should be noted that the "open top" is square or rectangular and finally this case is still, geometrically speaking, a fraction of a rectangular parallelepiped. None of the sides of this container is completely or partially covered by triangular panels.
• FR-A-2 579 567 which describes a container having a parallel bottom and upper face joined by triangular inclined faces whose shapes and dimensions are established to give the erected container a general shape of a truncated pyramid. The bottom is of common type, composed of four folded shutters and blocked by means of a tab inserted under the last folded shutter, thanks to notches. None of the sides of this container is completely or partially covered by triangular panels.
• FR-A-2 252 258 which describes a prismatic container, one face of which is a bottom on which all the closure means are found, which essentially consist of tabs which must be inserted under flaps, this positioning being facilitated by the presence notches to allow the containers to be erected mechanically and automatically. None of the sides of this container is completely or partially covered by triangular panels.
• NL-A-74/08 072 which also describes a prismatic container obtained by welding a tubular sheath and which can only be opened by a final cut preventing several successive openings and closings. The invention described consists, moreover, in facilitating the crushing of the empty container so that it is less bulky when it is disposed of. None of the sides of this container is completely or partially covered by triangular panels.
• DE-U-05 558 which describes a container having the shape of a rectangular parallelepiped. The invention described provides access to the paper towels after having torn off, along the precut lines, part of the container. A lid being fixed on the upper face of the parallelepiped allows multiple opening / closing of the container; in the closed position it completely covers the surface torn off from the container. The cover having two triangular panels, but said panels are not linked by common creasing lines.

The present invention deviates entirely from known solutions and deliberately chooses to give primacy to the aesthetics, originality and attractive appearance of a container intended to be used at the time of sale at the detail, that is to say outside the processes described above and which necessarily involve mechanical operations, storage phases and transport phases.

The container according to the invention therefore applies more particularly to objects that are relatively small and sufficiently luxurious to justify a specific and attractive packaging operation corresponding to "gift packages": costume jewelry, cosmetics and perfumes, fine lingerie, dishes, food products price etc.

To this end, the subject of the invention is a container made of foldable material such as cardboard, formed by folding a cut and grooved blank, which when it is erected in volume, panels determined by free edges coming from cutting and / or crease lines said blank having triangular panels which cover, after folding, panels constituting faces of the container, and means being provided for keeping the container upright and closed, characterized in that the container comprises at least two triangular panels of which at least two are linked together by a common creasing line, and that said triangular panels at least partially cover one or more adjacent faces of the container.

• le contenant possède, quand il est dressé, une base qui est constituée par un seul panneau plan déterminé de tous côtés par des lignes de rainage qui le séparent d'autres panneaux;
• le contenant possède, quand il est dressé, une base qui est constituée par un panneau plan déterminé par des bords libres et une seule ligne de rainage qui le sépare d'un autre panneau, des moyens étant prévus pour maintenir ledit panneau plan en place;
• les moyens pour le maintenir dressé et fermé sont constitués par des volets solidaires de panneaux triangulaires et devant être insérés dans des fentes qui subsistent entre deux panneaux adjacents quand le contenant est dressé;
• les moyens pour maintenir le contenant dressé et fermé sont constitués par des volets solidaires de panneaux triangulaires et devant être rabattus et appliqués par coincement à l'intérieur d'autres panneaux, quand le contenant est dressé;
• deux volets voisins sont en outre solidaires l'un de l'autre;
• les moyens pour maintenir le contenant dressé et fermé sont constitués par des trous qui traversent des panneaux et qui sont proches les uns des autres quand le contenant est dressé, un lien devant traverser lesdits trous puis être noué;
• certains au moins des panneaux constituant des faces du contenant possèdent des bords libres et un seul côté tenant à un autre panneau selon une ligne de rainage;
• les deux panneaux triangulaires, adjacents et solidaires sont en outre solidaires d'un autre panneau afin de former ensemble un trièdre;
• l'un des trois panneaux triangulaires du trièdre est solidaire d'un quatrième panneau destiné à être appliqué, après pliage, contre un autre panneau;
• trois panneaux forment ensemble un trièdre trirectangle;
• deux des panneaux, au moins, constituant des faces du contenant dressé sont fixés l'un à l'autre, notamment par collage;
• le flan doit être dressé par pliage selon des lignes de rainage disposées de telle sorte que le contenant est formé par rapprochement de panneaux qui convergent selon des angles non droits entre eux;
• les panneaux convergent vers un sommet à l'aplomb duquel se trouve une base plane;
• les panneaux convergent vers un sommet à l'aplomb duquel se trouve une ligne de rainage constituant une arête qui sépare deux panneaux non parallèles entre eux;
• le contenant présente, quand il est dressé, des panneaux disposés en série et présentant au moins un côté oblique, ces panneaux devant se placer partiellement par-dessus d'autres panneaux en les enveloppant par pliages successifs, des moyens étant prévus pour rendre le dernier panneau de la série solidaire du contenant;
• le dernier panneau de la série a une extrémité devant être insérée dans une fente;
• le dernier panneau de la série est situé à la base du contenant;
• l'une au moins des faces du contenant dressé est formée par deux panneaux intérieur et extérieur superposés et inégaux pour que le panneau extérieur plus petit que le panneau intérieur forme une surépaisseur et soit aligné avec un autre panneau devant se placer sur le panneau intérieur seulement.

According to other characteristics of the invention:

• the container has, when it is erected, a base which is constituted by a single flat panel determined on all sides by creasing lines which separate it from other panels;
• the container has, when it is erected, a base which is constituted by a flat panel determined by free edges and a single crease line which separates it from another panel, means being provided for holding said flat panel in place;
• the means for keeping it upright and closed consist of shutters integral with triangular panels and to be inserted into slots which remain between two adjacent panels when the container is erected;
• the means for keeping the container upright and closed consist of shutters integral with triangular panels and having to be folded down and applied by wedging inside other panels, when the container is erected;
• two neighboring shutters are also integral with one another;
• the means for keeping the container upright and closed consist of holes which pass through panels and which are close to each other when the container is erected, a link having to cross said holes and then be tied;
• at least some of the panels constituting faces of the container have free edges and only one side holding to another panel along a crease line;
• the two triangular panels, adjacent and integral, are also integral with another panel in order to form a trihedron together;
• one of the three triangular panels of the trihedron is integral with a fourth panel intended to be applied, after folding, against another panel;
• three panels together form a triangular trihedron;
• at least two of the panels constituting faces of the upright container are fixed to each other, in particular by gluing;
• the blank must be erected by folding along creasing lines arranged so that the container is formed by bringing together panels which converge at non-right angles to each other;
• the panels converge towards a summit plumb with a flat base;
• the panels converge towards a summit plumb with which there is a crease line constituting an edge which separates two panels which are not parallel to each other;
• the container has, when it is erected, panels arranged in series and having at least one oblique side, these panels having to be placed partially over other panels by enveloping them by successive folds, means being provided to make the last panel of the series integral with the container;
• the last panel in the series has one end to be inserted into a slot;
• the last panel in the series is located at the base of the container;
• at least one of the faces of the upright container is formed by two interior and exterior panels which are superimposed and unequal so that the exterior panel smaller than the interior panel forms an allowance and is aligned with another panel to be placed on the interior panel only.

The invention will be better understood from the detailed description below made with reference to the accompanying drawing. Of course, the description and the drawing are given only by way of an indicative and nonlimiting example.

Figure 1 is a view of a blank cut and grooved according to the invention and allowing, after folding, to obtain a container of substantially cubic shape.

Figures 2, 3 and 4 are schematic perspective views of a container obtained from the blank of Figure 1, in three situations of opening, semi-closing and complete closure respectively.

Figure 5 is a view of a blank cut and grooved in accordance with the invention and allowing, after folding, to obtain a container of substantially parallelepiped shape.

Figure 6 is a schematic perspective view of a container obtained from the blank of Figure 5, in the open position.

Figure 7 is a view of a blank cut and grooved according to the invention and for obtaining a substantially parallelepiped container.

Figure 8 is a schematic view of a container obtained from the blank of Figure 7 and showing a position in which the body of the container is made and its closure elements not yet folded down.

Figures 9 to 11 are schematic perspective views showing three phases of the closure of the container of Figure 8.

Figure 12 is a view of a blank cut and grooved according to the invention and for obtaining a container having substantially the shape of a cube truncated obliquely.

FIGS. 13 to 15 are schematic views illustrating three phases of closing the container obtained from the blank of FIG. 12.

Figure 16 is a view of a blank cut and grooved according to the invention and for obtaining a container having a substantially prismatic shape.

FIGS. 17 to 21 are schematic views showing different phases of closing the container obtained from the blank of FIG. 16.

Figure 22 is a schematic perspective view showing from the front a container closed according to the phases of Figures 17 to 21 and placed on a virtual plane.

Figure 23 is a schematic perspective view showing in profile a container closed according to the phases of Figures 17 to 21 and placed on a virtual plane.

Figure 24 is a view of a blank cut and grooved according to the invention and for obtaining a container having a complex polyprismatic shape.

FIGS. 25 and 26 are schematic plan views showing two phases of closing a container obtained from the blank of FIG. 24.

Figure 27 is a schematic perspective view of the container of Figure 26, in the same situation.

FIG. 28 is a schematic profile view of a closed container, obtained from the blank of FIG. 24.

FIG. 29 is a schematic perspective view of the closed container of FIG. 28.

Figure 30 is a view of a blank cut and grooved according to the invention and for obtaining a container having a complex polyprismatic shape, but having two compartments and no longer four like that of Figures 24 to 29, and kept closed by inserting closing tabs.

Figures 31 to 33 are schematic views illustrating the mounting and closing of a container obtained from the blank of Figure 30.

Figure 34 is a schematic view showing in perspective a container obtained from the blank of Figure 30, in the closed position.

Figure 35 is a schematic front view, in slight perspective, with partial section showing the interpenetration of closing tabs when a container obtained from the blank of Figure 30 is completely closed.

Figure 36 is a schematic perspective view of the container of Figure 34, placed on a virtual plane.

FIG. 37 is a view of a blank cut and grooved in accordance with the invention and making it possible to obtain a prismatic container which can be analyzed as having two pyramidal parts opposite by a triangular virtual base.

FIGS. 38 to 41 are schematic views illustrating phases of the closure of a container obtained from the blank of FIG. 37.

Figure 42 is a schematic perspective view of a container closed according to the phases of Figures 38 to 41 and placed on a virtual plane.

FIG. 43 is a view of a blank cut and grooved in accordance with the invention and making it possible to obtain an unclosed container constituting a kind of tray with oblique walls.

Figures 44 and 45 are schematic views illustrating the erection of side walls of a container obtained from the blank of Figure 43.

FIG. 46 is a schematic plan view of a finished container, obtained from the blank of FIG. 43.

Figure 47 is a schematic perspective view of the container of Figure 46.

Figure 48 is a view of a blank cut and grooved according to the invention and for obtaining a substantially parallelepiped container whose top, after complete closure, has two opposite oblique slopes.

FIGS. 49 to 52 are schematic views illustrating the phases of closing a container obtained from the blank of FIG. 48.

FIG. 53 is a view of a blank cut and grooved in accordance with the invention and making it possible to obtain a prismatic container which can be analyzed as having two pyramidal parts opposite by a virtual pentagonal base.

FIGS. 54 to 56 are schematic views illustrating the phases of closing a container obtained from the blank of FIG. 53.

FIG. 57 is a schematic front view of a closed container, obtained from the blank of FIG. 46 and according to the phases of FIGS. 54 to 56.

FIG. 58 is a schematic profile view of the container of FIG. 57.

Figure 59 is a schematic view showing the container of Figures 57 and 58 placed along one of its faces on a virtual plane.

Figure 60 is a view of a blank cut and grooved according to the invention and for obtaining without gluing a prismatic container analyzing as having two pyramidal parts opposite by a virtual pentagonal base.

FIGS. 61 to 63 are schematic views illustrating the phases of closing a container obtained from the blank of FIG. 60.

FIG. 64 is a schematic front view of a closed container, obtained from the blank of FIG. 60 and according to the phases of FIGS. 61 to 63.

FIG. 65 is a schematic profile view of the container of FIG. 64.

Figure 66 is a schematic view showing the container of Figures 64 and 65 placed along one of its faces on a virtual plane.

FIG. 67 is a view of a blank cut and grooved in accordance with the invention and making it possible to obtain, without bonding, a container having a square base and two symmetrical oblique parts, recalling the beveled shape of the container of FIG. 52, and with carrying handles.

Figures 68 to 70 are schematic views illustrating the mounting of a container obtained from the blank of Figure 67.

FIGS. 71 and 72 are schematic views showing respectively in perspective and in profile with partial section a container obtained from the blank of FIG. 67.

Referring to Figure 1, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

In a central area, there are seven panels: two square panels 1 and 2; four triangular panels 3, 4, 5 and 6, forming two by two square panels equal to panels 1 and 2; a triangular panel 7.

On one side of this central area, there are side panels: three triangular panels 8, 9 and 10 as well as a square panel 11.

On the other side of this central area, there are four side panels: triangular 12, 13, 14 and 15 as well as a square panel 16.

The panels of the central zone are determined by transverse crease lines 17, 18, 19 and 20 and by two oblique crease lines 21 and 22.

The side panels are differentiated from the central area by creasing lines 23, 24, 25 and 26 on the one hand, 27, 28, 29, 30 and 31 on the other.

These side panels are determined by orthogonal and oblique external cutting lines 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44 and 45. Cross cutting lines 46, 47 , 48 and 49 differentiate panels 8 and 9, 10 and 11, 12 and 13, 15 and 16.

We will now describe the folds necessary for the closure of a container but, with the embodiment described, there is a preliminary assembly phase in order to obtain on the one hand a body 50 to receive the articles to be packaged and d on the other hand a cover, the bottom of the body being formed by the square panel 2.

To constitute the body 50, the triangular panels 10, 14 and 15 are first straightened along the crease lines 24, 29 and 28, then the panel 1 and the panel 3 are straightened by folding them along the crease lines 17 and 18. The square panels 11 and 16 are then folded down by folding them along the crease lines 23 and 27 and they are glued respectively to the single panel 10 and to the two panels 14 and 15 placed in the extension of one of the 'other and therefore opposed by the cutting lines 41 and 42.

• on plie le panneau 13 contre le panneau 12 puis on les colle l'un à l'autre pour constituer un premier trièdre désigné par la référence globale 51 et composé des deux panneaux superposés 13 et 12, n'en faisant plus qu'un seul géométriquement parlant, et des panneaux 5 et 7;
• on plie le panneau 8 contre le panneau 9 puis on les colle l'un à l'autre pour constituer un second trièdre désigné par la référence globale 52 et composé des deux panneaux superposés 8 et 9, n'en faisant plus qu'un seul géométriquement parlant, et des panneaux 6 et 4.

To form the cover, there are two steps:

• panel 13 is folded against panel 12 and then glued to each other to form a first trihedron designated by the global reference 51 and composed of two superimposed panels 13 and 12, making only one geometrically speaking, and panels 5 and 7;
• panel 8 is folded against panel 9 and then glued to one another to form a second trihedron designated by the global reference 52 and composed of two superimposed panels 8 and 9, making only one geometrically speaking, and panels 6 and 4.

The two trihedrons 51 and 52 are connected to the body proper by the crease line 21 and when they are released as much as possible, as shown in FIG. 2, they release not only the upper part of the body 50 but also the 'one of its sides along a diagonal materialized by the crease line 21.

To close the container, the trihedron 52 is first folded down by folding it along the creasing line 21, the arrows F1, F2 and F3 in FIG. 2 indicating the movement of remarkable parts, then the trihedron 51 by folding it according to the creasing line 22, the arrows F4, F5 and F6 of FIG. 3 indicating the movement of remarkable parts.

FIG. 4 represents the closed container and it can be seen that the cover is constituted by the two trihedrons 51 and 52 which come to cover two opposite upper corners of the square opening of the body 50 by creating three extra thicknesses formed respectively by the panels 8- 9, by the panel 7 and by the panel 13 delimited diagonally by the cutting lines 35-36, by the cutting line 37 and by the cutting line 39.

The cover is of the "styling" type and is kept closed by itself due to the friction of the body panels and the cover.

The cover comprising the two trihedrons 51 and 52, gives the container an original and aesthetic appearance since each of the four lateral faces of the cubic body 50 has a diagonal: the section lines 35-36, 37 and 39 as just described, but also the crease line 21 which appears on the fourth face which is not visible in FIG. 4 but whose interior is seen in FIGS. 2 and 3.

Referring now to Figures 5 and 6, we see another embodiment according to which a cover is used identical to that which has just been described with reference to Figures 1 to 4 but with a parallelepiped body with conventional bottom.

Referring to Figure 5, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

Five rectangular panels 101, 102, 103, 104 and 105 are separated by parallel creasing lines 106, 107, 108 and 109. The panels 102 and 104 are integral with lugs 110 and 111 articulated along creasing lines 112 and 113, while the panel 103 is integral with a bottom panel 114 articulated along a crease line 115 and provided with a tab 116 articulated along a crease line 117.

This structure is in itself commonplace and is commonly used to form rectangular boxes.

According to the invention, a cover is obtained comprising, as in the previous embodiment, two styling trihedra.

They are obtained by cutting four triangular panels which fit into a rectangle somehow having a common part with the rectangle surrounding the panels 101 to 105. Each trihedron comes from four triangular panels respectively 120, 121, 122, 123 and 124, 125, 126, 127 because a panel of each of these two groups is intended to be superimposed on another and to be glued to it to have a trihedron maintained in volume.

These panels are differentiated by crease lines 130, 131, 132, 133, 134, 135, 136 and 137, as well as by cut lines 140, 141 and 142.

Here, the blank is obtained by cutting it in a single piece but one could, by simple technical equivalence, assemble a rectangular blank of ordinary type comprising the panels 101 to 105 and another rectangular blank comprising the panels 120 to 127. These two blanks would be superimposed on the right of panels 120 and 121, which would give a double thickness at this location. In practice, it is a question of determining which is the least expensive solution: falls during the cutting of a single blank, labor for the assembly of two blanks.

To assemble a container from the single blank, the panels 101 to 105 are folded along the crease lines 106 to 109 to form a body 150 in the form of a sheath, the panel 105 having to be applied against the panel 101 and glued to that -this but not on the triangular panel 120 from the panel 101 because the panel 120 is a trihedron of the cover and not of the body.

Then, the two trihedrons are formed: the first, designated by the global reference 151, is set in volume by folding along creasing lines 130, 131, 132 and 133 so that the panel 123 is applied against the outside face of the panel 120 ; the second, designated by the global reference 152, is set in volume by folding along the creasing lines 134, 135, 136 and 137 so that the panel 126 is applied against the outer face of the panel 125.

To form the bottom of the body 150, the legs 110 and 111 are folded at 90 °, then the bottom panel 114 and the leg 116 is engaged as is well known per se, the bottom holding by the friction of the legs and panels between them but, as is commonplace, one can provide security cutouts which ensure a more secure hold.

The finished container therefore has a generally standard general shape but its opening and closing are both very original and very practical while participating in the exterior decoration since the lid creates extra thicknesses limited by oblique lines.

This container will not be described in more detail since its body 150 is generally banal, and therefore well known, and its cover has been described with reference to FIGS. 1 to 4.

It is observed that the cover of these first two embodiments of the invention has two distinct parts, the two trihedra, one of which is integral with the other, so that in the fully open position of the cover, that -this is offset on one side and is therefore not symmetrical with respect to the body of the container.

Referring to Figures 7 to 11, we see another embodiment of the invention still providing a cover composed of two parts in the form of a trihedron, but symmetrical with each other and, therefore, with respect to the body of the container.

Referring to Figure 7, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

Six rectangular panels 201, 202, 203, 204, 205 and 206 are separated by crease lines 207, 208, 209, 210 and 211. The panels 203 and 205 are integral with legs 212 and 213 articulated along crease lines 214 and 215, while the panel 204 is secured to a bottom panel 216 articulated along a crease line 217 and secured to a closure tab 218 articulated along a crease line 219.

As indicated with reference to FIGS. 5 and 6, this structure is commonplace to form a parallelepiped container with a standard bottom.

As before, the cover is taken in part on the surface of the panels which must form the body, but here the two parts of this cover are independent and no longer integral with one another.

The first part of the cover comprises three triangular panels 221, 222 and 223 and a square panel 224, these panels being determined by creasing lines 225, 226 and 227, as well as by two cutting lines 228 and 229.

The second part of the cover comprises four triangular panels 231, 232, 233 and 234 determined by crease lines 235, 236, 237 and 238 as well as by two cut lines 239 and 240.

To build and close the container from this blank, we start by forming the body 250 by folding the panels 201 to 206 along the crease lines 207 to 211 in order to form a sheath with a square section, we glue the panel 202 on the outer face of the panel 206 and the panel 201 on the outer face of the panel 205. The bottom is closed by folding the tabs 212-213, the bottom panel 216 and by inserting the closing tab 218.

In this situation, the various triangular panels of the cover have a more or less random position as evoked by FIG. 8.

They are separated from the body 250 in a very pleasant, elegant and attractive manner, reminiscent of the flowering corolla of a flower, which enhances the article that is placed inside.

With the two embodiments described above, the two trihedra of the cover are kept in volume by gluing two triangular panels together forming one of the three planes of the trihedron. The cover is attached to the body by the effect of friction.

Here, we have chosen another more refined variant according to which the panels of the trihedrons are held together and the cover held on the body 250 by means of a link:

The square panel 224 is folded over the opening of the body 250 and the panel 223 against the outside face of the panel 201, then the panel 222 against the panel 223, as shown in FIG. 10.

The panel 232 is then folded over the square panel 224 and the panel 231 against the panel 206, so that it is in the same plane as the panel 202, itself in excess thickness on the panel 206. The panel 234 is superimposed on panel 231.

The panels 222, 223 and 234, 231 are pierced with a hole 241 placed in such a way that after the two trihedrons 251 and 252 are folded down, the two holes 241 of the panels 222 and 223 on the one hand and the two holes 241 of the panels 234 and 231 are facing each other and arranged as close as possible to the edge 207 (creasing line separating the panels 201 and 202).

This assembly is kept closed by means of a ribbon 242 engaged first in the two holes 241 of the trihedron 251 then in those of the trihedron 252 passing outside the body 250. This ribbon 242 is knotted as it has been shown diagrammatically in FIG. 11.

Note that the examples which have just been described are containers which all have a flat bottom with respect to which the side walls are perpendicular.

It is one of the important interests of the invention to be able to adapt to different constraints imposed either by the economics of manufacturing, or by the concern for aesthetic originality.

The preceding examples illustrate the case where it is desired to retain a certain overall classicism and nevertheless take advantage of the originality of the oblique lines of the trihedrons in accordance with the invention.

The embodiment which will now be described with reference to FIGS. 12 to 15 provides a container of which all the lateral faces are oblique with respect to a supposed bottom placed on a horizontal plane such as a table.

Referring to Figure 12, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

A central triangular panel 300 is determined by crease lines 301, 302 and 303 beyond which there are three symmetrical assemblies 310, 311 and 312 each comprising three triangular panels respectively 315-316-317, 318-319-320, 321 -322-323 and a square panel respectively 324, 325 and 326.

The panels of the three sets 310, 311 and 312 are determined by three creasing lines respectively 330-331-332, 333-334-335, 336-337-338 and by a cutting line respectively 340, 341 and 342.

The central panel 300 is intended to constitute the bottom of the packaging and to mount it, the three sets 310, 311 and 312 are folded individually to form three symmetrical trihedra:

For the assembly 310, the panels are folded so that the triangular panel 315 is applied against the outside face of the square panel 324 to which it is glued, which creates a trihedron whose three planes are composed of the panel 316, of the panel 317 and of panel 324, the panel 315 being thicker on panel 324.

For the assembly 311, the panels are folded so that the triangular panel 319 is applied against the outside face of the square panel 325 to which it is glued, which creates a trihedron whose three planes are composed of the panel 320, of the panel 318 and of the panel 325, the panel 319 being thicker on the panel 325.

For the assembly 312, the panels are folded so that the triangular panel 322 is applied against the exterior face of the square panel 326 to which it is glued, which creates a trihedron whose three planes are composed of panel 323, of the panel 321 and of the panel 326, the panel 322 being thicker on the panel 326.

Each set therefore gives rise to a trihedron to which the same reference is given: 310, 311, 312.

This situation is shown in Figure 13.

We can say that in this position, the container is in the open position and ready to receive the article or articles to be packaged. The side walls are not continuous since there is between the three trihedrons 310, 311 and 312 an open space which extends to the bottom 300 and it is practically impossible to use this container for packaging small bulk products. such as candy that could escape through these spaces. We rather choose such a container for fine lingerie, jewelry or any other compact item.

The container is closed by bringing the three trihedrons 310, 311 and 312 towards a common vertex, being careful that the triangular panels 317, 318 and 321 are located outside the neighboring square panels 326, 324 and 325 respectively, such so that these triangular panels make up for the difference in thickness and are opposite the glued triangular panels 315, 319 and 322 by their edges and thus give the finished container external faces without any excess thickness.

One can, however, clearly mark the oblique lines which remain on each of the three lateral faces of the container by playing on impressions which, of course, can be applied to the blank for the decoration of the container.

The arrows F7, F8 and F9 show the movement of convergence, at non-right angles, of the three trihedrons 310, 311 and 312 towards a common vertex 350.

When the container is closed, the three trihedrons 310, 311 and 312 remain in their position thanks to the friction effect and it is noted that the three oblique faces of the container each have two triangular panels 315-318, 319-321, 322-317, the square panels being completely concealed and serving to retain by friction the triangular panel covering the neighboring trihedron.

The container thus assembled and closed offers only visible oblique faces and rests on a table or other plane by the triangular bottom 300 (FIG. 15).

This volume can be defined as a cube cut by an oblique plane, the latter being that of the bottom 300.

Of course, it is physically possible to place the container on a plane not by the bottom 300 but by any other of its three lateral faces, but this is only of decorative interest.

This container is therefore still of the type comprising a bottom.

However, the invention also makes it possible to produce entirely prismatic containers, all the faces of which can constitute a "bottom" by which the container can rest on a plane and we will now describe such an embodiment.

It should be noted, however, that the "prismatic" should not be taken in the narrow sense of the term as meaning a volume having optical qualities. This word is, here, representative of all forms of polyhedral containers, having several oblique faces and not, like standard containers, a clearly identified bottom and lateral faces orthogonal to this bottom. To be even more pictorial and closer to reality, we will also use the expression "diamond cut" to characterize oblique faces competing towards a common vertex.

Referring to Figure 16, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

In a central area, there are seven triangular panels 401, 402, 403, 404, 405, 406 and 407 separated by crease lines 408, 409, 410, 411, 412 and 413 and distinct from five lateral triangular panels respectively 420, 421 and 422 on the one hand, 423 and 424 on the other hand, these panels being determined by creasing lines 430, 431, 432, 433 and 434 as well as by two cutting lines 435 and 436.

To mount and close the container from this blank, two trihedrons 440 and 441 are first formed.
For this, the panels 404, 405, 422 and 421 are folded and the panel 421 is applied to the outside face of the panel 422 to which it is glued, which creates the trihedron 440, then the panels 406, 407 are folded, 423 and 424 and the panel 423 is applied to the exterior face of the panel 424 to which it is glued, which creates the trihedron 441.

The container thus formed but in the open position is represented by FIG. 17. It is ready to receive objects and, given the spaces which separate the two trihedrons 440 and 441 located face to face, the same remarks as those of the mode of previous embodiment (Figures 12 to 15) are also valid here.

We note that the two trihedrons 440 and 441 are opposite by their concavity like two shells and the first closing movement consists in bringing these two trihedrons together, as indicated by the arrows F10 and F11, movement which is possible thanks to the fact that the two trihedrons 440 and 441 are articulated to each other by the crease line 412.

This movement causes them to converge at non-right angles to form a common vertex 442.

To keep the container closed, that is to say the two trihedrons 440 and 441 against each other, we use the other panels arranged in series, which we fold in a sort of schematic wrapping movement by FIGS. 18 to 21: the panel 403 is folded against the panel 423 according to the arrow F12, then the panel 402 is folded against the panel 407 according to the arrow F13, then the panel 401 is folded against the panel 421 according to the arrow F14 and, finally, the panel 420 is folded against the panel 404, which has a slot 445 substantially perpendicular to the bisector of the angle of this panel 404, and the free end of the panel 420 is inserted into this slot as evoked by arrow F15, which ensures that the container is kept in the closed position.

We note that all the faces of the two trihedrons 440 and 441 are covered, which is equivalent to a complete envelopment of the "shells" originally opened, visible in FIG. 17.

In Figure 22, we see that the container has no bottom because it is reduced to the crease line 412. More precisely, we can say that this fully prismatic container with six faces, can be placed on n ' any of these six faces, which one is chosen then plays the role of a background.

However, it should be noted that during the packaging of articles, the container is in the situation in FIG. 17, so that at this stage, the container has a square bottom formed by the two panels 405 and 406 which are in line with one another until the two trihedrons 440 and 441 have been folded towards each other along the crease line 412.

In practice, a difference between the different faces of the prismatic container is discerned only by the presence of the slot 445 which allows the uncovered fraction of the panel 404 to hide the end of the panel 420.

In FIG. 22, the container is seen from the front by the trihedron 440 and rests on a virtual plane P by the face 406.

In Figure 23, the container is seen in profile.

The invention also makes it possible to produce containers with a prismatic appearance but having an individualized bottom, as will be seen with the following embodiment.

Referring to Figure 24, we see a blank according to the invention, cut and grooved to present different panels determined by crease lines and cut lines.

The blank has a central square panel 500 surrounded by four sets of triangular panels: 501-502-503-504, 505-506-507-508, 509-510-511-512, 513-514-515-516. Four cutting lines 520, 521, 522 and 523 allow one of the panels of each set to be folded and folded against the neighboring panel, in order to create four trihedra.

Here again, the container must be kept closed by a ribbon, as will be described in detail below, since the setting in volume of the trihedra supposes their bringing together towards a common summit and it is therefore not possible to prepare them by sticking two neighboring panels.

To mount and close the container, first straighten the panels 501, 506, 510 and 514 and then straighten the panels 527-528 and 531-532 while bringing them together by folding along the creasing lines 534 and 536. We proceed to even with panels 502-525-526-505 and 510-529-530-513.

An intermediate position obtained by these movements is shown in Figure 25.

To pack items, we start with these manipulations to obtain a sort of open cut and we place the items on the 500 square bottom.

The closure is obtained by bringing the points formed by the panels 502-525, 526-505, 506-507-527, 528-509-510, 511-529, 530-513, 514-515 closer to a common virtual vertex. -531, 532-504-501, as shown schematically by the arrows F16 in FIGS. 26 and 27, this movement consisting in bringing the panels together at non-right angles.

The panels 501, 502, 505, 506, 527, 528, 510, 511, 513, 514, 531 and 532 are traversed by a hole 540 for the passage of a ribbon 541. This results in a closed container having four trihedra, designated by the global references 551, 552 553 and 554 which are adjacent to each other and all integral with the square bottom 500 because one of the planes of the trihedra is formed by the panels 503, 508, 512 and 516 respectively.

The container has a vertex 555 formed by the competition of the edges of the four trihedrons and located directly above the center of the square bottom 500.

It should be noted that the flaps 525-526, 527-528, 529-530 and 531-532 constitute partitions perpendicular to the square bottom 500 when the container is closed, so that the useful space for packaging articles is divided into four parts that do not communicate. This container must therefore be reserved for the packaging of four separate items, for example to form an assortment: four jars of different fruit jam for example.

This partitioning has the advantage of isolating, wedging, objects and therefore adapts well to the packaging of fragile items such as glasses, cups, etc.

Note that, of course, the articles can be placed in containers in accordance with the invention, the shapes and dimensions of which are chosen so that they can each be placed in one of the four trihedra 551, 552, 553 and 554 .

FIGS. 30 to 36 show a variant of the embodiment of FIGS. 24 to 29.

To facilitate understanding of this variant, by comparison with the preceding description, the identical elements are designated by the same references, but assigned the letter A. A single new element appears, it is a background in two parts and to designate these two parts, references 500A and 500B have been retained.

The blank understands itself and does not require a new description.
To mount and close such a container, the folds are started like those described with reference to FIG. 25, as understood by FIG. 31.
We fold the rest of the blank as shown schematically in Figure 32 where all the panels are partially folded, so that the container is ready to receive articles.
As here again there is an internal partitioning, this container is particularly well adapted to receive separate articles to be maintained, wedged, such as for example cups, glasses or other fragile articles.
The closure is completed as shown in FIG. 33: the left part of the container has two trihedrons separated by a double partition formed by folding the panels 529A and 530A and the opening of these trihedrons is closed by means of the part 500B the bottom.
This container is kept closed by the panels 502A and 505A integral with the panels 525A and 526A placed one against the other and engaged between the panels 529A and 530A.

The panels 525A and 526A act as closing tabs and their insertion between the panels 529A and 530A is particularly effective because of the large contact surfaces which provide vigorous friction and because of the compactness of the container.

The closed container of FIG. 34 results from the culmination of the movements mentioned in FIGS. 31 to 33.

To fully understand the interpenetration of the various elements described, Figure 35 shows the container also closed from the front, with partial section transverse but seen in slight perspective by an observer whose point of view is symbolized by an eye O.

FIG. 36 shows the finished container placed on a plane P along its face formed by the part 500A. If the plane P is horizontal, the part 500B is vertical. It can thus be seen that this container is in stable equilibrium when it is placed on a plane either by the part 500A or by the part 500B. It can also be placed by any of its other faces, for decorative purposes for example, but it is then less stable.

The invention also makes it possible to produce prismatic containers without any particular bottom, no longer closed by a complete wrapping as described with reference to FIGS. 16 to 23 but by insertion of closing tabs, which will be described. now with reference to Figures 37 to 42.

Referring to Figure 37, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

The blank has two sets of four triangular panels 601-602-603-604 and 605-606-607-608, determined by crease lines 610, 611, 612, 613, 614, 615 and 616, as well as by two lines cutting 620 and 621.

The panel 602 is secured to a triangular panel 625 by a crease line 626 and the panel 608 is secured to a triangular panel 627 by a crease line 628.

To mount and close a container from this blank, first straighten the panels 603 and 605 according to the arrows F17 in FIG. 38, then straighten the panels 601 and 607, which gives the situation in FIG. 39.

The panels 602-625 and 608-627 are then folded down according to the arrows F18 of FIG. 39, while bringing together the two dihedrons formed by the panels 601 and 603 on the one hand and 605 and 607 d on the other hand, by folding the panels 604 and 606 along the creasing line 610 according to the arrows F19 in FIG. 39, this movement consisting in bringing the panels together at non-right angles towards a common vertex 630.

This leads to the situation in Figure 40.

This container is ready to receive articles to be packaged and, for the reasons already explained above, they cannot be bulk products which could escape through the spaces which remain between the straightened panels 601-605 and 603- 607.

The panel 625 is then folded along the crease line 626 and the panel 627 along the crease line 628 and the closure is completed by inserting the panel 625 under the panel 607 and the panel 627 under the panel 601, which the 'is shown schematically in Figure 41.

The finished container remains closed by the effect of friction between the panels 625-607 and 627-601 and has the appearance of a volume having two trihedra opposed by a virtual base.

The useful space is unique and you can pack one or more items. In addition, as the maintenance in the closed position is ensured by simple rubbing, it is possible to close and open the container several times.

All the containers that we have just described have a means of closing: either they have a lid, or they have concave parts which are placed one against the other, in the manner of a shell that the 'we are closing.

However, the invention also makes it possible to produce containers which do not have their own closing means and are therefore comparable to trays.

This is the example which will now be described with reference to FIGS. 43 to 47.

Referring to Figure 43, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

A square central panel 700 is surrounded by four sets 701, 702, 703 and 704 each composed of four triangular panels respectively 705-706-707-708, 709-710-711-712, 713-714-715-716 and 717- 718-719-720. These panels are determined by crease lines 730-731-732-733, 734-735-736-737, 738-739-740-741 and 742-743-744-745.

In order to simplify the description, we will only describe the mounting of a container from this blank, only for sets 701 and 702 because all the steps to obtain a container with a square bottom are repetitive:

The panel 706 is straightened relative to the bottom 700 and the panel 705 is folded along the crease line 733, as indicated by the arrow F20 in FIG. 44. The panel 709 is then straightened relative to the bottom 700 according to the arrow F21 in FIG. 44, the panel 710 is applied against the outer face of the panel 705 and then the panel 711 is folded against the inner face of the panel 705, according to the arrow F22 in FIG. 45, so that the panel 705 is taken into account. sandwich between panels 710 and 711.

We see that the panel 705 of the assembly 701 is associated with the panels 710 and 711 of the assembly 702 and thus, step by step, the panels 712, 716 and 720 corresponding to the panel 705 cooperate with two panels 714-715, 718-719 and 707-708 of the neighboring assembly which ensures the peripheral continuity of the container and its volume keeping, the interior covering panels 711, 715, 719 and 708 being held in place by the friction effect.

This container has a square bottom 700 and an upper opening 750 also square but smaller and offset by 45 ° because the crease lines 736, 740, 744 and 732 which form the edges of the opening 750 determine the right angles which are plumb from the middle of the sides of the bottom 700.

The difference in orientation and dimensions is created by the oblique arrangement of the triangular walls 710, 714, 718 and 707 while the intermediate walls, also triangular, 706, 709, 713 and 717 are orthogonal to the bottom 700.

These alternately orthogonal and oblique side walls determine a single interior space capable of receiving one or more individualized or bulk products.

Note that the polar symmetry of this container allows it to receive four identical items and having externally, together, the internal shape of the container. In particular, four containers according to the invention can be produced which nest perfectly and cannot escape through the opening 750 because they are retained by the oblique side walls 710, 714, 718 and 707.

Naturally, one can provide a cover or a cover or an overpack (in particular thermoformed) to close the opening 750.

We will now describe another embodiment of the invention which alone integrates several of the previously described embodiments: substantially parallelepipedic body, classic bottom, body formation and support by "wrapping" and closure by insertion of tabs, that is to say without bonding and without link.

Referring to Figure 48, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

The blank has six panels of the same height 801, 802, 803, 804, 805 and 806, four of which, 801, 803, 804 and 806, each carry a triangular flap 807, 808, 809 and 810 respectively.

These panels and shutters are determined by crease lines 820, 821, 822, 823, 824, 825, 826, 827 and 828.

The panel 801 is secured to a trapezoidal panel 830 by a crease line 831, which panel 830 is itself secured to a triangular panel 832 by a crease line 833. The outer cutting lines 834 and 835 of the panels 830 and 832 are aligned with the crease line 825.

The panel 802 and the panel 832 are each secured to a bottom panel respectively 840 and 841 by a crease line respectively 842 and 843, themselves secured to a closure tab respectively 844 and 845 by a crease line respectively 846 and 847.

Finally, the triangular flaps 807 and 808 each have a closing tab 848 and 849 respectively by a fold line 850 and 851 respectively.

To form a container from this blank, we first fold the panels 801 to 806 along the creasing lines 820 to 824 to form a sheath, then we fold the bottom panel 840 and the closing tab 844, then we finish "wrapping" by panels 801, 830 and 832 as shown diagrammatically in FIGS. 50 to 52.

The container is closed first by obliquely folding the triangular flaps 807, 808, 809 and 810, the flaps 807 and 808 being placed against the outside face of the flaps 809 and 810 according to the arrows F23 and F24 of FIGS. 57 and 58, then by folding the closing tabs 846 and 847 to insert them under the flaps 809 and 810 according to the arrows F25 and F26 in FIG. 51.

The container is finished when the bottom panel 841 has been placed in position and the closing tab 845 has been inserted, as indicated by the arrow F27 in FIG. 52.

It can be seen that the insertion of the closing tabs 846 and 847 keeps the cover in the closed position in oblique planes, thanks to a friction effect.

The bottom meanwhile is of the ordinary type although it includes two overlapping bottom panels 840 and 841 and folded across from one another.

In addition to the upper part of the container which has an original bevel shape, the body itself has extra thickness thanks to the panels 830 and 832 placed in a sling, this effect can, of course, be emphasized by coordinated prints applied to the blank before cutting and creasing.

In practice, one begins by constituting the body and it is closed at its lower part by placing bottom panels 840 and 841 and closing tabs 844 and 845.

We can then place the items to be packaged through the upper opening which remains because we have released the flaps 807, 808, 809 and 810 by spreading them in the manner of flower petals, which is particularly attractive and rewarding. especially for luxury items.

We will now describe another embodiment of the invention making it possible to obtain a prismatic container which can be defined geometrically as being a volume delimited by two pyramids with five faces opposite by a virtual base.

Referring to Figure 53, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

This blank comprises two series of six triangular panels respectively 901-902-903-904-905-906 and 907-908-909-910-911-912, these two series being integral with each other in that the panels 905 and 908 are held together by a crease line 915.

These panels are determined by crease lines 916-917-918-919-920 and 921-922-923-924-925.

The panels 904 and 909 are integral with triangular panels 930 and 931 by creasing lines 932 and 933.

To mount a container from this blank, we start by straightening the panels 906 and 907 according to the arrows F28 and F29 in Figures 54 and 55, then we wrap this kind of center that make up the panels 905, 906, 907 and 908 in folding the other panels according to the arrows F30 and F31 in FIG. 55, making sure that the panels 903 and 910 are applied against the external face of the panels 907 and 906 and that the panels 930 and 931 are applied against the external face panels 912 and 901.

In FIG. 56, it can be seen that in order to close the container, the panel 910 is applied against the panel 906 according to the arrow F32, then the panel 911 in front of a remaining opening according to the arrow F33 and finally the panel 912 by inserting it under the panel 930, according to arrow F34.

The panels 901, 930, 931 and 912 are traversed by a hole 940 and the two holes 940 of the superimposed panels 901-931 and 912-930 are opposite one another. The four holes 940 are located near an apex 941 of the container and the latter is closed by means of a link 942 engaged in the four holes 940 and knotted outside the container.

Figure 57 shows the container obtained after closing and we see that it evokes the "diamond cut" by presenting two pyramidal convexities with five faces opposite by their virtual base.

The side visible in FIG. 57 presents the five panels 902, 903, 908, 909 and 931. The opposite side, and therefore hidden, presents, in the same order, the five panels 911, 910, 905, 904 and 930.

This container has no bottom and each side, consisting of a single panel or two overlapping panels, can be used as a base to place the finished and closed container.

Figure 58 shows the container in profile and shows that the container cannot rest in equilibrium on a plane P along an edge of its prismatic shape.

FIG. 59 shows the same container placed in stable equilibrium on the plane P by its face constituted by the panel 905.

We can ensure a pre-assembly of this container by gluing the panel 903 on the outer face of the panel 907 and the panel 910 on the outer face of the panel 906 because this assembly still allows the flat storage of the container, it being completed by putting it in volume by bringing together the panels 931 and 901 on the one hand and the panels 930 and 912 on the other hand, this bringing together automatically causes the spacing of the other walls to create a single interior space intended to receive articles of all kinds.

The link 942 can be a simple ribbon for temporary packaging, or a cord (or the like) for a reusable bag.

We see that the same embodiment adapts to different variants of closure of the container: pre-assembly by gluing or link and we will now show that we can also choose the closure by tabs, which allows remove both the pre-assembly by gluing and the link.

Referring to Figure 60, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

Note that this is a blank similar to that of FIG. 53 and the same elements are designated by the same references. There are no 940 holes to receive a link. On the other hand, the blank has two additional triangular panels 1001 and 1002 integral with the panel 901 by a crease line 1003 and the panel 912 by a crease line 1004.

The assembly of the container from this blank is done as already described above and when the closure is completed according to Figure 63 (which corresponds to Figure 56), the panel 1001 is placed in front of the opening remaining while the panel 1002 is inserted under the panel 903, according to the arrow F35, by the gap which remains between this panel 903 and the panel 904.

The container remains closed thanks to a friction effect between the panels 1001-1002 on the one hand and the panels under which they are inserted 911 and 902.

Figures 64 and 65 are respectively front and side views of the finished and closed container.

FIG. 66 shows the finished and closed container, placed on a plane P by its face formed by the panel 911.

In Figures 67 to 72, there is shown an embodiment of the invention which makes it possible to produce containers having a bottom and side walls which converge not towards a point vertex but towards a line parallel to the plane of the bottom.

Referring to Figure 67, we see a blank according to the invention, cut and grooved to present different panels determined by creasing lines and cutting lines.

It comprises a central square panel 1100 secured along its four sides to triangular panels 1101, 1102, 1103 and 1104, the latter being integral with triangular panels 1105 and 1106 equal to the panels 1101 and 1102. Four panels in the form of equilateral triangles 1107, 1108 , 1109 and 1110 equal to each other end the blank. These panels are determined by crease lines 1111 to 1120 and by two cut lines 1121 and 1122.

The panels 1107 and 1110 have oblong ribs 1130 and 1131 cut on three sides and holding to the panel by the fourth side. As is known per se, these fishplates are intended to penetrate into openings 1132 and 1133 cut from the panels 1108 and 1109 in order to form a carrying handle.

To mount and close a container from this blank, we start by straightening the two panels 1101 and 1102, then the two panels 1103 and 1104, while folding the other panels in a sort of wrapping movement in two opposite directions, as this is shown schematically in Figures 68 and 69.

The panels 1103, 1105, 1104 and 1106 remain perpendicular to the bottom 1100 while the panels 1108 and 1109 are placed obliquely and converge by their free edges in the vicinity of which the openings 1132 and 1133 are located. The container is then in the situation of FIG. 70.

Of course, the articles to be packaged are placed in the container before it is completely closed.

Note that this container applies particularly well to the packaging of relatively bulky unit objects with a large base: pieces of dishes, casseroles, kettles etc.

Given the weight of these objects and the stability of the container on its bottom, you can place the object to be wrapped on the blank, or after a quick folding to "break" the creasing lines, the container then being in a situation resembling to that of figure 68, then proceed to fold the other panels by proceeding "around" the object.

Extract the ribs 1130 and 1131 (Figure 70) and fold the panels 1109 and 1110 over the panels already in place 1108 and 1109 according to the arrows F36 and F37 while introducing the ribs 1130 and 1131 into the openings 1132 and 1133 located opposite each other.

The finished container is shown in FIG. 71 and it can be seen that it rests stably on its bottom 1100 on a plane P.

In FIG. 72, it can be seen how the splices 1130 and 1131 fold one under the other at the top of the oblong openings, so that one can easily pass your hand through the aligned openings to carry the container in being protected from the raw edges cut by the splints which extend flat from edge to edge.

It is possible to provide only one splice, more or less long and can extend to the outside face. opposite panel and can also be used as a closing tab.

It emerges from the above description that the invention makes it possible to produce numerous models having original shapes, essentially based on oblique lines, originating from the use of triangular panels, all the models originating from a blank and then being erected, essentially, according to movements of wrapping or closing in the shell, entirely different from what is achieved with standard parallelepiped boxes and which differ from each other only in their dimensions and impressions.

On the contrary, with the invention, a new mode of packaging is inaugurated which participates in the act of presentation and sale and which gives it an importance unknown to date, especially for luxury products which require excellent presentation, justified by their high quality and high price.

But it goes without saying that one can use a material other than cardboard, compact or corrugated, and in particular synthetic materials. It is clear, in fact, that the plastic molding of containers according to the invention would be a simple technological equivalent.

The various panels constituting the walls of the containers can be full or perforated, in particular by holes allowing air circulation between the interior and the exterior of the container.

Claims (19)

1. A container of pliable material such as cardboard, formed by folding a cut, scored blank, which when it is assembled into a three-dimensional shape has panels defined by free edges originating from cutting lines and scored lines, the said blank having triangular panels that cover after folding the panels (1-11-16; 101-103-104-105; 201-203-204-206; 324-325-326; 423-407-421-404) which constitute faces of the container, means being provided to keep the container assembled and closed,
   characterized in that
   the container is constituted by at least two triangular panels (4-6-8-9 and 5-7-12-13; 120-121-122-123 and 124-125-126-127; 221-222-223 and 231-233-234; 315-316-317; 318-319-320 and 321-322-323; 401-402-403-404-405-406-407-421-422-423-424; 501 to 516-525 to 532; 601 to 608-625-627; 705 to 720; 807-808-809-810; 901 to 912-930-931; 1001-1002) of which at least two of them are joined together by a scored line and the said triangular panels cover at least partially one or several adjacent panels of the container.
2. The container of claim 1, characterized in that once it is assembled, it has a base that is constituted by a single plane panel (2; 300; 500; 700) defined on all sides by scored lines (17-18-24-28; 301-302-303; 730-734-738-742) that separate it from other panels.
3. The container of claim 1, characterized in that once it is assembled, it has a base which is constituted by a plane panel (114; 216; 840-841) defined by the free edges and a single scored line (115; 217; 842-843) that separates it from another panel (103; 204; 802-832), means (116, 218; 844-845) being provided to hold this plane panel (114; 216; 840-841) in place.
4. The container of claim 1, characterized in that the means for keeping it assembled and closed are constituted by flaps (324-325-326; 420; 525 to 532; 625-627; 708-711-715-719; 846-847; 1001-1002) that are solid triangular panels (315-319-322; 401; 502-505-507-509-511-513-515-504; 602-608; 807-808; 901-912) and are intended to be inserted into slots that remain between two adjacent panels once the container is assembled.
5. The container of claim 1, characterized in that the means for keeping it assembled and closed are constituted by flaps (708-711-715-719) that are solid triangular panels (707-710-714-718) and intended to be folded down and pressed by wedging against the inside of other panels (705-712-716-720) once the container is assembled.
6. The container of claim 4, characterized in that two adjoining flaps (8-9; 12-13; 120-123; 125-126; 315-324; 319-325; 322-326; 421-422; 423-424) are also integral with one another.
7. The container of claim 1, characterized in that the means for keeping it assembled and closed are constituted by holes (241; 540; 940) which pass through panels (222-223-231-234; 501-502-505-506-527-528-510-511-513-514-531-532; 901-912-930-931) and which are close to one another once the container is assembled, a tie (242; 541; 942) being intended to pass through said holes and then to be tied.
8. The container of claim 1, characterized in that at least some of the panels (1-11-16; 201-206; 901-912-930-931) constituting the faces of the container have free edges and a single side joined to another panel along a scored line (23-27; 207-211; 916-925-932-933).
9. The container of claim 1, characterized in that two adjacent and solid triangular panels (4-6-5-7; 121-122-124-127; 232-233; 316-317-318-320-321-323) are furthermore integral with a third panel ( 8-12; 123-126; 234; 324-325-326) in order to form a trihedron together.
10. The container of claim 9, characterized in that one (4-5; 121-124; 232; 316-320-323) of the three triangular panels of the trihedron is integral with a fourth panel (9-13; 120-125; 231; 315-319-322) intended to be pressed, after folding, against another panel (8-12; 123-126; 234; 324-325-326).
11. The container of claim 9, characterized in that three panels (4-6-8; 5-7-12; 121-122-123; 124-127-126; 232-233-234; 316-317-324; 320-318-325; 323-321-326) together form a trirectangular trihedron.
12. The container of claim 1, characterized in that at least two of the panels (14-15-16; 101-105; 201-205; 202-212; 315-324; 319-325; 322-326; 421-422; 423-424) constituting the faces of the assembled container are fixed to one another, in particular by gluing.
13. The container of claim 1, characterized in that the blank is to be assembled by folding scored lines disposed such that the container is formed by putting together panels that converge along non-right angles with one another.
14. The container of claim 13, characterized in that the panels converge toward an apex, vertically of which a flat base is located (300; 500).
15. The container of claim 13, characterized in that the panels converge toward an apex, vertically of which a scored line is located (412; 610) , constituting an edge that separates two panels (405-406; 604-606) that are not parallel to one another.
16. The container of claim 1, characterized in that once it is assembled, it has panels (403-402-401-420; 830-832) disposed in series and having at least one oblique side, these panels being intended to be placed partially above other panels (423-407-421-404; 804-803) by enveloping them by successive foldings, means (445; 845) being provided to make the last panel (420-841) in the series integral with the container.
17. The container of claim 16, characterized in that the last panel (420) of the series has one end intended to be inserted into a slot (445).
18. The container of claim 16, characterized in that the last panel (841) of the series is located at the base of the container.
19. The container of claim 1, characterized in that at lest one of the faces of the assembled container is formed of two inner (324-325-326) and outer (315-319-322) panels superimposed on one another and of unequal size, so that the outer panel (315-319-322) which is smaller than the inner panel (324-325-326) forms excess thickness and is aligned with another panel (318-321-317) intended to be placed solely on the inner panel (324-325-326).

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