FR2988698A1 - Foldable package box for packing e.g. jewels, has internal box body comprising side and/or front walls erected with respect to bottom wall of external box body in operation position, where box is flat when bodies are in deployed position - Google Patents

Abstract

The box (1) has an internal box body (3) fixed to an external box body (2) and comprising side and/or front walls (8a, 8b) and bottom wall (8c) connected together in a foldable manner to form an I-shaped part when internal box body is in deployed position. A central branch of the part is superimposed and linked to a bottom wall of external box body. Upper and lower branches of the part are divided into central and side zones. The side and/or front walls are erected based on a bottom wall of external box body in operation position, where the box is flat when the bodies are in deployed position.

Description

The present invention relates to the technical sector of foldable packaging boxes, made in particular of cardboard or heavy-weight paper, with or without a cover. The invention finds an advantageous application in the field of the packaging of luxury goods, such as jewelry, bottles of champagne or fine wines, or cosmetics or perfumery for example. PRIOR ART Nowadays, foldable packaging boxes comprise an outer box body made of a sheet of rigid material. This sheet of rigid material, such as cardboard for example, has a plurality of transverse lines of folding. These lines make it possible, in particular, to define respectively at least one face wall, a bottom wall, a rear wall, and optionally a wall intended to constitute the lid of said box.

The outer box body has an extended position in which said walls form a planar assembly, and an operative position, wherein said front and rear walls are erected relative to the wall constituting the bottom, and so that they are parallel to each other. to one another and spaced from each other, and perpendicular to said bottom wall. When the outer box body comprises a cover wall, the latter, when the outer box body is in its operative or erected position, is parallel to and spaced from the bottom wall, thereby defining a clean volume to receive the object to be stored or presented.

In the current state of the art, in order to make the side walls of such boxes, so to complete and close the volume defined by the bottom wall, and the front and rear walls, it is known to report one by one and by bonding in particular, said side walls, also referred to in the technical field as "cheeks", directly on the bottom wall of the outer box body. These side walls are then glued on both said bottom wall and also on the front and rear walls. The establishment of these cheeks, is performed manually, so that this task 5 proves not only tedious, but still consuming time and manpower. This task is also difficult to mechanize. Moreover, one also comes up against difficulties of precise positioning of said cheeks, precisely because of the use of the hand of the man. Thus, it is not uncommon to observe centering defects of the cheeks relative to the bottom wall. These various disadvantages affect not only the quality of the cabinet, which is recalled that among its applications, that of packaging and presenting luxury products, but also its manufacturing cost. SUMMARY OF THE INVENTION Thus, the object of the invention is first of all to provide a folding packaging box which overcomes the aforementioned drawbacks and which gives complete satisfaction to its manufacturer and its user. An object of the invention is therefore to provide a foldable packaging box that is easy and quick to manufacture, which allows the establishment of side walls or cheeks in a simple and effective way, ensuring optimal centering of those with respect to the bottom wall of the outer box body. Another object of the invention is also to provide a packaging box which has, in an extended position, a small footprint to reduce storage and transport costs. Another object of the invention is also to provide a packaging box which has an irreproachable finish, the latter being intended for the packaging of luxurious products. In particular, it must be sufficiently strong and able to keep its box shape when it is in an operational position.

To solve the aforementioned problems, it has been developed a foldable packaging box comprising an outer box body made of a plurality of sheets of rigid material juxtaposed two by two and secured together by means of an outer sheet, defining a plurality of transverse fold lines respectively delimiting at least a front wall, a bottom wall and a back wall of the cabinet. This outer box body has an extended position in which said walls form a planar assembly, and an operative or erected position, wherein said front and rear walls are respectively parallel to each other and spaced apart from each other. other, and perpendicular to said bottom wall.

According to the invention, the packaging box comprises an inner box body, made of a sheet of material of lower stiffness than the outer box body, and fixed to said outer box body.

This inner box body comprises a plurality of side and / or front and bottom walls, foldably connected together so as to form an "I". The central branch of the "I" is formed by the bottom wall of said inner box body, and is intended to be superimposed and attached to said bottom wall of the outer box body. The bottom wall dimensions of said inner box body are substantially equal to the dimensions of the bottom wall of the outer box body. The upper and lower branches of the "I" are formed by the side and / or front walls of said inner box body and are divided into three zones: a central zone located in the extension of the bottom wall of said inner box body and intended to to serve as a side wall and / or front (also called cheek) for the packaging cabinet, and two lateral areas extending in a direction perpendicular to the direction of the central branch of the "I", and intended to be fixed respectively to the front and rear walls of the outer box body, when said outer box body and said inner box body are each in their operative position. The side and / or front and bottom walls form in a deployed position a flat assembly applied against the bottom, front and rear walls of the outer box body, and the side and / or front walls are erected relative to said bottom wall of the outer box body, in an operative position.

The packaging box is planar when the outer box body and the inner box body are each in their deployed position. On the other hand, when the outer box body and the inner box body are each erected in their operative position, a volume suitable for receiving a product is defined.

Thus, the establishment of the side walls or cheeks is greatly simplified. The centering of these is achieved by the superposition of the bottom walls, respectively inner and outer box body. The two side walls are thus set up simultaneously, which saves time and optimizes the production of such a packaging box. In addition, the footprint is reduced because the outer and inner box bodies adopt planar deployed positions.

The cabinet thus obtained is completely satisfactory and the arrangement of an internal box body ensures a certain strength to the cabinet and an optimal finish. Advantageously, and in order to close the packaging box according to the invention, the latter, and more particularly the outer box body, has an additional transverse line of folding, defining a cover wall, adjacent to the rear wall. Said bottom and lid walls are, when the outer box body is in its operative position, parallel to each other and spaced from each other.

Preferably, and in order to increase the strength of the cabinet, but in particular to provide a better finish, the upper and lower branches of the "I" constituting the inner box body are doubled in thickness by folding on itself a portion of said inner box body, more particularly at the cheeks.

According to a particular embodiment, the two lateral zones intended to be fixed respectively to the front and rear walls of the outer box body when said outer box body and said inner box body are each erected in their operative position, are substantially square and each comprise a fold line in their diagonal in contact with the bottom wall of said inner box body, dividing into two halves said side regions, which side regions are respectively fixed to the front wall and to the rear wall of said body. outer box by the halves of the lateral areas at the ends of the upper and lower branches of the "I".

Thus, the inner box body is fixed on the outer box body, on the one hand, by its bottom wall, and on the other hand, by the halves of the lateral areas at the ends of the upper and lower branches of the box. I ". This simplifies the assembly of the packaging and keep plan, before use by the end customer. Moreover, this ensures a certain elasticity of the packaging box, when it is in operational position. Preferably, the halves of the lateral zones at the ends of the upper and lower limbs of the "I" are attached respectively to the front wall and to the rear wall of said outer can body by glue or by a rubber band. adhesive Another part of the upper and lower branches of the "I" is intended to be fixed, after erection of the assembly formed by the outer box body and the outer box body, also at the inner face of the walls of front and back of the outer box body, in order to achieve the actual packaging. This joining is obtained by means of adhesive strips or complementary self-gripping strips for example, as marketed under the trademark VELCRO®. Advantageously, the outer box body has an additional transverse fold line, delimiting a cover wall, adjacent to the cover wall, said cover wall is adapted, when the outer box body is in its operative position, to cover the front wall. Complementary reversible closure means, such as magnets for example, are arranged on the internal face of the cover wall and on the outer face of the face wall and are able to cooperate to allow the wall to be held in place. lid in a closed position.

According to a particular embodiment of the packaging box according to the invention, the sheets of rigid material constituting the outer box body, are constituted by rigid cardboard, receiving on their outer face, a printed paper sheet, optionally coated acetate or polypropylene, or a synthetic material of the Balacron ® type, reeded inside said outer box body. In addition, the outer box body is covered on its inner face with a guard sheet covering, in particular, the transverse fold lines forming hinges, as well as the rim areas of the outer sheet.

BRIEF DESCRIPTION OF THE DRAWINGS Other characteristics and advantages of the invention will emerge clearly from the description which is given hereinafter, by way of indication and in no way limitative, with reference to the appended figures, in which: FIG. diagrammatic representation in perspective of the foldable packaging box according to the invention, the bottom wall of the inner box body being attached to the bottom wall of the outer box body; FIG. 2 is a schematic representation of the outer box body alone, seen from above, the latter comprising successively a front wall, a bottom wall, and a rear wall; FIG. 3 is a schematic representation of the outer box body alone, viewed from above and according to another embodiment, the latter comprising successively a covering wall, a cover wall, a rear wall, a bottom wall; , and a face wall; FIG. 4 is a schematic representation of the inner box body alone, seen from above, and according to a particular embodiment, the latter comprising parts intended to be folded to form the double thickness of part of the upper and lower branches. "I"; - Figure 5 is a schematic representation of the inner box body, similar to Figure 4, alone, in perspective, and showing the folding step of the parts to be folded; - Figure 6 is a schematic representation of the inner box body, similar to Figure 5, only seen from above, the parts to be folded being folded. Fig. 7 is a schematic representation showing the inner and outer box bodies, and showing the positioning of the inner box body on the outer box body. DETAILED DESCRIPTION OF THE INVENTION Referring to FIGS. 1 to 7, which show a collapsible packaging box 1 according to the invention, this consists of an outer box body 2 and an inner box body. 3. The outer box body 2 is intended to receive the inner box body 3 to form, after erection of the assembly in an operative position, a foldable packaging box 1, especially for luxury products. The outer box body 2 is made of a plurality of sheets 4 juxtaposed to each other in pairs, said sheets being made of a rigid material, and being substantially rectangular. This rigid material is in particular compact non-corrugated rigid cardboard, having for example a basis weight of the order of 800 to 1200 g / m2. The outer face of the outer box body 2 receives a printed paper sheet 5 of a typical grammage of between 120 and 170 g / m2. This sheet may optionally be covered with acetate or polypropylene, or even made up Balacron®, rimmed on the inner face of the body 2, and playing a role of protection and possibly decor. The juxtaposition of the sheets 2 two by two defines at their adjacent proximity zone, transverse lines 7, which will play the role of fold line when the set of sheets 4 is assembled, firstly through the outer sheet 5. Thus, these transverse fold lines 7 delimit respectively according to a first embodiment, at least one face wall 4a, a bottom wall 4b, a rear wall 4c of said box (see Figure 2).

According to a second embodiment, the outer box body 2 has two additional transverse fold lines 7 delimiting a cover wall 4d, adjacent to the rear wall 4c, and a cover wall 4e, adjacent to the cover wall 4d. .

The inner face of the outer box body 2 receives a guard sheet 6, for example made of paper of grammage between 120 and 170 g / m2, also likely to be coated with acetate or polypropylene, and covering in particular the transverse lines folding 7, and thus contributing to confer on them the role of hinges. The outer box body 2 has an extended position in which said walls, delimited by the transverse fold lines 7, form a planar assembly. When in the operational position, that is to say when it is erected, and according to the first aforementioned embodiment, said front walls 4a and rear 4c are respectively parallel to each other and spaced apart from each other, and perpendicular to said bottom wall 4b. In the above-mentioned second embodiment, the outer box body 2 has an extended position in which the front 4a and rear 4c walls are parallel to each other and spaced apart from one another and the walls 4b and 4d cover bottom are also parallel to each other and spaced from each other, and said cover wall 4e covers the front wall 4a. According to an important feature of the invention, the cabinet is also defined by means of an inner box body 3, attached to the outer box body.

This inner box body 3 is made of a sheet 8 of lower rigidity material than the outer box body 2. It is for example constituted by a sheet 8 of flexible cardboard, non-corrugated and having a grammage of the order from 200 to 700 g / m2.

The inner box body 3 comprises a plurality of side walls 8a or 8b and / or front walls 8a or 8b, also called cheeks, and a bottom wall 8c, said walls being foldably connected to each other so as to form substantially one " I "when in the deployed position (see Figure 4) ..

More specifically, the central branch of the "I" is formed by the bottom wall 8c of the inner box body 3. This bottom wall 8c of the inner box body 3 is intended to be superposed and attached to said bottom wall 4b of said 2. To this end, the dimensions of the bottom wall 8c of the inner box body 3 are substantially equal to the dimensions of the bottom wall 4b of the outer box body 2. The bottom wall 8c of the body of the internal box 3 is attached to the inner face of said outer box body 2 and in particular on its bottom wall 4b, by means of glue 15 or strips of adhesive.

The upper and lower branches of the "I" are formed by the side walls 8a or 8b and / or front 8a or 8b of said inner box body 3. Said walls are in particular doubled in thickness by the folding on itself of a part 9 of the inner box body 3 and divided into three zones, respectively a central zone 10 and two lateral zones 11.

The central zone 10 is of substantially rectangular shape and its longitudinal dimension is substantially equal to the transverse dimension of the bottom wall 8c of the inner box body 3. This central zone 10 is arranged in the extension of the bottom wall 8c of the body of inner box 3 and is, therefore, intended to serve as side wall 8a or 8b and / or front 8a or 8b, that is to say, cheeks for the foldable packaging box 1. The two zones lateral 11 extend on either side of the central zone 10 and in a direction perpendicular to the general direction of the central branch of the "I". These two lateral zones 11 are intended to define zones more particularly intended to be fixed respectively on the front face 4a and on the rear face 4c of the outer box body 2. More particularly, the free end of each of the upper and lower branches 30 of the "I" forms a zone 12, resulting from folding, intended to be glued, either by glue, or by an adhesive tape on the front faces 4a and 4c rear of the inner box body (see for example Figure 1 and Figure 7).

These zones 12 are therefore intended to be bonded to the outer box body, concomitantly with the bottom wall 8c of the inner box body. For this purpose, and in order to perform a bonding in a single operation, the inner box body 3 is folded beforehand, as shown in FIG. 5, and this bonding step having been illustrated in FIG. It should be noted that in this example of embodiment, these zones 12 are not doubled in thickness, moreover unnecessary, inasmuch as they fulfill only a role of fixation and not of maintenance.

After this bonding operation, the assembly constituted by the inner box body attached to the outer box body, is always in planar form, allowing easy storage and transport.

In order to produce the actual packaging box, it is first necessary to raise the front and rear walls of the outer box body and, in addition, to fix another zone, in this case 14, located adjacent the zones 12 of the upper and lower strips of the "I", also against the front faces 4a and 4c of the outer box body. This fixation is therefore performed by the end user. For this purpose, this attachment is either using adhesive strips, or again with complementary self-gripping strips, correctly positioned. * One can observe a fold line 13 in the diagonal of the lateral zones 11, dividing in two halves said lateral zones 11.

As already said, the side walls 8a or 8b and / or front 8a or 8b and bottom 8c of the inner box body 3 form in a deployed position a flat assembly applied against the bottom wall 4b of the outer box body 2, and said side walls 8a or 8b and / or front walls 8a or 8b are erected relative to said bottom wall 4b of the outer box body 2, in an operative position. The collapsible package box 1 is planar when the outer box body 2 and the inner box body 3 are each in their deployed position. From then on, all the interest in terms of storage, transport and logistics is conceived.

As can be seen from the foregoing, the foldable packaging case 1 of the invention is entirely satisfactory to its manufacturer and its user. More particularly, the foldable packaging box 1 is simple and economical design. The arrangement of the inner box body 3 makes it possible in particular to ensure that the side walls or cheeks 8a or 8b are placed in a simple and effective manner, while firstly ensuring optimal centering thereof relative to each other. at the bottom wall 4b of the outer box body 2, and secondly, the establishment of these side walls or cheeks in a single operation, since as well, the cheeks are not individualized relative to one another to the other, but belong to the same entity, in this case, the inner box body 3.

The foldable packaging box 1 also benefits from an optimal solidity and a good quality of finish. Its realization can also be easily mechanized. Suitable robots, in particular equipped with suction cups or with depression, are indeed able to seize one by one the outer box bodies and position them on a conveyor operating in step-by-step mode, on the one hand they receive points of glue 15 or strips of adhesive, then the inner box body flat, or even erected.

In semi-automatic mode, it is furthermore possible to ensure self-centering of the inner box body with respect to the outer box body, by erecting the rear and front walls of the outer box body, defining centering supports. the branch of the "I" of the inner box body, and corollary, the appropriate positioning of the other areas of the inner box body, and in particular the cheeks.

Claims (9)

REVENDICATIONS1. Foldable packaging box 1 comprising an outer box body 2 made of a plurality of sheets 4 made of rigid material and juxtaposed two by two, said sheets being assembled by means of an outer sheet 5, said outer box body 2 having a plurality of transverse fold lines 7 delimiting respectively at least one face wall 4a, a bottom wall 4b, a rear wall 4c of said box, the outer box body 2 having an extended position in which said walls form a planar assembly and an operative or erected position in which said front wall 4a and rear wall 4c are respectively parallel to each other and spaced from each other, and perpendicular to said bottom wall 4b, characterized in that it comprises an internal box body 3, made of a sheet 8 of material of lower rigidity than that of the outer box body 2, and fixed to said body of outer box 2, comprising a plurality of side walls 8a or 8b and / or front 8a or 8b and bottom 8c, foldably connected together and so as to form substantially an "I" when said inner box body 3 is in deployed position, the central branch of the "I" being formed by the bottom wall 8c of said inner box body 3, and being intended to be superimposed and attached to said bottom wall 4b of said outer box body 2, the dimensions of said bottom wall 8c of said inner box body 3 being substantially equal to the dimensions of the bottom wall 4b of the outer box body 2, the upper and lower branches of the "I" being intended to define the side walls 8a or 8b and / or 8a or 8b of said inner box body 3 and being divided into three zones: - a central zone 10 located in the extension of the bottom wall 8c of the inner box body 3 and intended to act as a lat eral 8a or 8b and / or frontal 8a or 8b for the foldable packaging box 1, and - two lateral zones 11 extending in a direction perpendicular to the direction of the central branch of the "I" and intended to be respectively fixed to the front and rear walls 4a and 4c of the outer box body 2, said side walls 8a or 8b and / or front walls 8a or 8b and bottom plates 8c forming in an extended position a flat assembly applied against the bottom walls 4b, from the front 4a and rear 4c of the outer box body 2, and said side walls 8a or 8b and / or frontal 8a or 8b being erected relative to said bottom wall 4b of the outer box body 2, in an operational position, the box of Foldable package 1 being planar when the outer box body 2 and the inner box body 3 are each in their deployed position. 2. Packaging box 1 according to claim 1, characterized in that the outer box body 2 has two additional transverse lines of folding 7 delimiting a cover wall 4d, adjacent to the rear wall 4c, and a cover wall 4e, adjacent to the lid wall 4d, said bottom walls 4b and 4d lid being, when the outer box body 2 is in its operative position, parallel to each other and spaced one of the other, and the cover wall 4e being adapted, when the outer box body 2 is in its operative position, to cover the front wall 4a. 3. Packing box 1 according to claim 1, characterized in that the upper and lower legs of the "I" constituting the inner box body 3 are doubled in thickness by the folding on itself of a part 9 of the body internal box 3. Packing box 1 according to claim 3, characterized in that the two lateral zones 11 intended to be fixed respectively to the front and back walls 4a and 4c of the outer box body 2 respectively define: firstly a end zone 12, intended to be fixed on said front walls 4a and rear 4c of the outer box body, after folding of the upper and lower branches of the "I" constituting the inner box body 3, - then an adjacent zone 14 to the zones 12, intended to be fixed on said front walls 4a and rear 4c of the outer box body after erection of the box. Packing box 1 according to claim 4, characterized in that the end zones 12 are fixed to the front and rear faces 4a of the outer box body by gluing or adhesive strips. 6. Packing box 1 according to one of claims 4 and 5, characterized in that the zones 14 are fixed to the front walls 4a and rear 4c of the outer box body by strips of adhesive or self-bonding strips . - 2988698 14 7. Packing box 1 according to one of claims 4 to 6, characterized in that the end zones 12 of the side zones 11 at the ends of the upper and lower branches of the "I" are not doubled in thickness. 5 8. Packing box 1 according to one of claims 1 to 7, characterized in that the sheets 4 of rigid material constituting the outer box body 2, are constituted by rigid cardboard, receiving on its outer face, a paper sheet 5, in particular printed, and optionally coated with acetate or polypropylene, rimmed inside. 10 9. Packing box 1 according to one of claims 1 to 8, characterized in that the outer box body 2 is covered on its inner face with a guard sheet 6, including covering the transverse lines of folding 7 forming hinges. 15