EP3932822A1 - Plastic packaging with framework made from cardboard or another bio-sourced material without gluing - Google Patents

Plastic packaging with framework made from cardboard or another bio-sourced material without gluing Download PDF

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Publication number
EP3932822A1
EP3932822A1 EP21182387.7A EP21182387A EP3932822A1 EP 3932822 A1 EP3932822 A1 EP 3932822A1 EP 21182387 A EP21182387 A EP 21182387A EP 3932822 A1 EP3932822 A1 EP 3932822A1
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EP
European Patent Office
Prior art keywords
container
groove
containing food
food according
packaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21182387.7A
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German (de)
French (fr)
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EP3932822B1 (en
Inventor
Frédéric MICHON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Groupe Guillin SA
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Groupe Guillin SA
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Publication date
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Publication of EP3932822A1 publication Critical patent/EP3932822A1/en
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Publication of EP3932822B1 publication Critical patent/EP3932822B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34Coverings or external coatings
    • B65D25/36Coverings or external coatings formed by applying sheet material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/40Details of walls
    • B65D1/42Reinforcing or strengthening parts or members
    • B65D1/48Reinforcements of dissimilar materials, e.g. metal frames in plastic walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00Lids or covers for rigid or semi-rigid containers
    • B65D43/02Removable lids or covers
    • B65D43/0202Removable lids or covers without integral tamper element
    • B65D43/0214Removable lids or covers without integral tamper element secured only by friction or gravity
    • B65D43/0216Removable lids or covers without integral tamper element secured only by friction or gravity inside a peripheral U-shaped channel in the mouth of the container

Definitions

  • the present invention relates to packaging, and more particularly to trays and boxes intended in particular to contain food.
  • These packages have a container offering an interior space or volume delimited by a bottom and lateral sides, generally made of plastic and manufactured in a conventional manner, for example by thermoforming. They then include a means of closure, by a cover or by a sealed film or not. So that the handling of these packages, when they are filled, are not made difficult by the weight of the contents, the container must have a mechanical strength which impacts at least some of its dimensions, in particular the thicknesses of the walls which delimit it. .
  • the packaging industry is seeking to reduce the amount of plastic used in the manufacture of trays, boxes and other containers.
  • it is in particular recommended to use an external structure made of cardboard material, which reinforces the rigidity of the packaging when the thicknesses of the walls are thinned.
  • the external reinforcement structure implemented improves the overall mechanical strength of the container by compensating for the lack of rigidity resulting from the lack of plastic material.
  • some solutions are devoid of glue between the plastic container and the cardboard structure, but the latter must be preformed (change from a two-dimensional configuration to a three-dimensional configuration) before being applied to the container.
  • This preforming may require, in certain proposed configurations, the use of glue not between the plastic and the cardboard, but between parts of the cardboard structure to be fixed to one another to give it the three-dimensional shape. This is the case in particular in the solution described in the document WO2015187016 or in the one that appears in the document FR 2 979 329 .
  • this three-dimensional preforming may dispense with glue and simply result from the initial design of a flat card stock blank with cutouts and creases allowing three-dimensional folding and assembly, as is the case. case for example of the configuration described in the document WO9323297 .
  • the invention provides a considerably simplified solution to achieve the same result, with a dual configuration with an external structure made of cardboard-type material or other bio-sourced material and internal plastic packaging, recyclable, designed to make assembly much easier and , consequently, much more easily integrable into an industrial automation line.
  • the finished product is a bi-material packaging, typically in plastic, guaranteeing food quality, reinforced with cardboard, requiring no gluing operation and allowing easy separation of the two elements so that sorting and recycling do not pose any problem. .
  • the packaging obtained is rigid although the plastic thicknesses are appreciably reduced at least at the level of the lateral sides, the loss of resistance linked to the reduction in thickness of the plastic sheets being compensated by the external layer made of a sufficiently rigid material of the type. cardboard or other bio-sourced material.
  • the use of the cardboard reinforcement structure opens up many perspectives in terms of decoration / communication on this type of packaging.
  • cardboard thus makes it possible to implement printing / color on the front / back cardboard, but also to emboss in relief on the cardboard during forming, and finally to have a constant stacking step.
  • plastic packaging the existence of a cardboard outer structure according to the invention has no impact on the design of the possible closure methods, and the packaging can thus be provided with a cover. separate, hinged cover, sealable film, stretch closure film etc.
  • the packaging of the invention in particular suitable for containing food, conventionally comprises on the one hand a container made of plastic-type material provided with a bottom and a continuous peripheral wall.
  • the upper edge of the peripheral wall opposite the bottom defines an opening and is provided with a peripheral rim extending radially outwards.
  • the packaging of the invention also comprises an outer covering, the cut of which is made in a flat blank of recyclable material of cardboard type and placed in contact with the outer face of the peripheral wall in the assembled state. It also presents, in a known manner, detachable connection means of the coating to the container.
  • said connecting means consist of a peripheral groove running through the outer face of the peripheral wall of the container, opening towards the bottom of the container and being delimited by two parallel-looking walls respectively formed by an upper strip. of the peripheral wall of the container adjoining the upper edge and by an outer wall of the peripheral rim facing said strip, said groove delimiting a housing space adjusted for an upper edge of the liner having a shape adapted to the shape of the groove.
  • This solution implements a purely mechanical fixing which surrounds the container and can therefore be exerted continuously on the periphery of the packaging.
  • This is in fact a plastic crimping in the upper part of the covering, which keeps the covering formed by the latter in place.
  • the envelope of cardboard material is shaped to adapt to the volume of the container, and is clamped between the two walls of a narrow groove, which in fact results in distributing the stress of fixing the coating to the container over the entire periphery. Fixing over the entire periphery does not require, moreover, to conform the coating three-dimensionally before assembly on the container, it may suffice to insert it into the mold before thermoforming.
  • At least the upper strip of the peripheral wall of the container and the outer wall facing said strip are inclined at an angle of between 5 ° and 45 ° with respect to the vertical.
  • the slope given to the sides of the container allowing manufacture by undercut thermoforming of the plastic material, allows the assembly to be joined together without any additive (glue, lacquer, etc.). It also facilitates the separation of the two elements easily for the recycling of each of the elements.
  • the plastic container thanks to its thermoformability, encloses the part top of the cardboard positioned in the mold before thermoforming, by undercut effect on all or part of the periphery.
  • the effect of the undercuts is particularly effective in the angles, where there is a natural reinforcement due to the existence of undercuts in two different directions, in the hypothesis of polygonal containers with a slope. lateral.
  • the existence of ridges in said angles makes the plastic there, and consequently the undercut, more rigid, so that the maintenance of the cardboard on the plastic is more efficient.
  • the width of the peripheral groove is equal to the thickness of the blank of the outer covering.
  • the groove can be provided axially discontinuous, although it is always peripheral: whatever its exact shape and the number of interruptions, it runs around the periphery of the packaging. In other words, whatever the intended shape, the general nature of the groove remains peripheral.
  • said groove may comprise a succession of slots, the frequency of the aliasing having to remain compatible with the requirement of peripheral path.
  • the crenellations can be trapezoidal in shape, the smallest of the parallel sides of the trapezoids being in alignment with the bottom of the crenellated groove.
  • This specific shape also provides undercuts resulting in reinforcing the crimping and in guaranteeing the maintenance of the external coating around the plastic container.
  • At least one of the walls forming the groove may include reliefs projecting towards the inside of the groove, also creating well-marked undercuts further enhancing the quality and durability of the crimping.
  • these reliefs can be inserted into orifices or slots of corresponding shapes made in the upper edge of the coating.
  • the reliefs and the orifices in which they are inserted in fact produce a kind of riveting.
  • the reliefs can accommodate in embossings of corresponding shapes made in the upper edge of the covering, and of which they follow the shape.
  • the cutout of the blank of the outer covering may include at least a portion of shape and area equal to the shape and area of the peripheral wall of the container.
  • the coating of the peripheral wall may be completely covering and only comprise sections or portions which do not overlap when they are in contact with the latter.
  • the blank cutout may include a portion of shape and area equal to the shape and area of the bottom of the container.
  • the coating can go as far as covering the bottom and the peripheral wall of the container.
  • the absence of overlapping portions makes it possible to use a plan model for cutting the covering that is as simple as possible, easy to manufacture and to use, economical in terms of cardboard area.
  • the coating may for example in practice include a polygonal bottom with the same surface area as the bottom of the container, separated by grooves from the lateral surfaces of the surfaces. equal to the surfaces of the lateral sides of the container including the wall of the groove.
  • the crimping can be reinforced in a particular way, at the level of the corners: at least one relief projecting from the wall of the container can equip each corner of the groove, the side panels of the coating then being provided with slots. matching the portion of these reliefs present in the groove section of their lateral insertion side.
  • the crimping groove is in fact at least partially formed in the flange extending radially outwards from the upper edge of the container, which may also have the function, at least in certain configurations of the packaging, of allowing the crimping. closing a cover, for example by clipping a peripheral profile of a cover into a gutter of corresponding shape made in the peripheral rim of the container.
  • the outer wall of the groove may belong to a gutter of trapezoidal cross section, which has a oblique wall with the same inclination as the portion of the peripheral wall of the container which it faces.
  • the parallelism of the two walls of the groove is found in this configuration, and the distance from the wall of the gutter to the peripheral wall of the container is provided of the same order of magnitude as the thickness of the cardboard blank from which the coating is realized.
  • said gutter may be provided axially discontinuous. This is for example packaging without adjoining lids, those which are sealed by means of a film sealed on the edges of the container. In such a case, the edges of the container serve as a fixing support.
  • An axially discontinuous gutter enhances the rigidity of the sealing surface. It is therefore planned not to run the gutter continuously, but to interrupt it regularly.
  • the coating may have cutouts, for example simple geometric figures, having a first decorative vocation and in particular making it possible to be able to see the packaged product.
  • the use of cardboard coverings allows extensive use of this support for decoration or information purposes, by printing on the surfaces of the cover, cutting out multiple shapes, making decorative stampings, etc. .
  • the side walls of the casing can benefit from all kinds of treatments allowing a stronger marketing effect, which can moreover, if necessary, strengthen its attachment to the container.
  • peripheral wall of the container can have reliefs located at the level of the cutouts of the coating, and dimensioned to fit therein.
  • an additional blocking of said peripheral coating is carried out in an orientation parallel to the sides of the container, in the direction of the bottom thereof.
  • a first packaging variant of the invention comprises a filmable container 1 having a bottom 4 in this case rectangular and four sides 5 forming a continuous peripheral wall and the upper edge 6 of which extends radially outwards by a rim 7 provided with a peripheral groove 8, the bottom of which forms the edge 6.
  • the cardboard covering 40 (see figure 4 ) actually follows the external faces of the bottom 4 and the lateral sides 5, the lateral edges of each panel 41 to 44 meeting at the level of the corner edges of the continuous peripheral wall 5 of the container 1.
  • the grooves 46 to 49 marking the fold lines between the bottom 45 and the side panels 41 to 44 of the cardboard covering 40 cover the bottom 4 / peripheral wall 5 connecting ridges of the container 1.
  • the outer edge of said panels 41 to 44 is crimped in the groove 8, between an upper band 51 of the lateral sides 5 and the outer wall 81 which connects the upper edge 6 and the radial part of the peripheral rim 7.
  • the peripheral groove 8 comprises a wall 81 of parallel appearance and facing an upper strip 51 on each side 5, these two walls and the flange 6 which connects them constituting in fact a groove 8 of width equal to l. 'thickness of each cardboard side 41, 43 of the covering 40.
  • the cardboard covering 40 is therefore clamped in the peripheral groove 8, and therefore mechanically well held over the entire periphery of the container 1. This method of fixing prevents the panels 41 to 44 from having overlapping portions, since there is only room for a single thickness of cardboard in the groove 8.
  • the cardboard cover 40 (see figure 4 ) is in fact made from a planar blank cut and grooved so that the bottom 45 and the panels 41 to 44 constituting the lateral sides are separated by grooves 46 to 49 which constitute the fold lines between them.
  • there is no mechanical means for the mutual fixing of the sections 41 to 44 for example via tabs / incisions connections or by gluing, which would in all cases require sections or protuberances. allowing a more or less partial overlap of the sections between them, allowing the practical implementation of a mechanical connection.
  • the lateral sides of the container 1 are inclined, in all the versions presented, because this provides an undercut effect on the periphery, in a reinforced way in the angles of the volume due to the double direction of the slope and the greater resulting container stiffness in this region.
  • This undercut in practice at an angle of 5 ° and 45 °, appreciably improves the attachment of the cardboard covering 40 as shown in figure 4 to the plastic volume of the container 1.
  • the contact forces at the level of the wall 81 have a mainly horizontal component, but also a vertical component, less important given the degree of inclination of the oblique face, which is parallel to the sides 5 lateral.
  • This vertical component oriented upwards materializes the constraints applying to the external coating 40 with a view to maintaining it in the peripheral groove 8.
  • These figures also show that the coating 40, which follows the whole of the bottom 4 and of the side walls 5 of the container 1 has a thickness which makes it suitable for providing a significant increase in the rigidity of the packaging.
  • the figures 5 to 8 show a packaging configuration without a lid but closed by a film sealed on the peripheral rim 17 of the container 1, which requires a surface of suitable dimensions for the sealing of the lid on the container to be "effective".
  • the groove 8 is, in this configuration, made between a discontinuous gutter 18 which runs along the entire periphery of the rim 17 and the lateral sides 5 of the peripheral wall of the container 1. This appears as a discontinuous gutter in figure 5 turns out in practice to create terminals delimiting the external part of the groove 8, such as visible in figure 6 , de facto creating an outer wall 81 with a discontinuous groove 8.
  • the gutter 18 is in particular provided discontinuous to increase the rigidity of the rim 17 and allow good sealing quality. Furthermore, the outer part of the rim 17 oriented parallel to the base 4 is extended by a peripheral skirt 20 of shape perpendicular to said base 4.
  • the packaging closure cap not shown, is fixed over the entire periphery of the container 1, over the entire flat rim area 17 available.
  • the peripheral coating 40 is secured to the container 1 in exactly the same way as for filmable or lidded packaging, the groove 8 obeying the same dimensional characteristics as in the previous version of packaging, at least in width and depth, and also running all along the periphery of the packaging, however discontinuously. Taking into account the fixing constraints necessary to retain the coating in the groove 8, this method of fixing is however quite appropriate, the peripheral distribution of the forces being admittedly less complete but largely sufficient.
  • the packaging configuration of figures 9, 10 and 11 has a hinged cover 2 able to close elastically on the container 1, with the aid of corresponding profiles which snap into one another.
  • the cover 2 and the container 1 are connected by a hinge 3 integrally with these two volumes.
  • the profile which equips the peripheral rim 7 of the container 1 takes the shape of a gutter 18 of a section substantially equivalent to that of the previous variant, but continuous.
  • the domed cover 2 similar in shape to that of the container 1, comprises a corresponding rim 20 provided with a peripheral profile 21, the shape of which is dimensionally very close to that of the gutter 18, and which is intended to be housed therein.
  • the respective dimensions of the gutter 18 and of the profile 21 allow a connection with adjusted elastic engagement of one in the other, a clipping resulting in that the edges 7 and 20 are in contact or almost in contact with one of the 'other.
  • the domed cover 2 defines an additional volume for the packaging when it is closed.
  • the figures 12 and 13 show, in section, the mechanical attachment of the liner 40 to the container 1 in the lid solution of the figures 9, 10 and 11 . It obeys the same crimping scheme as the fixing methods of the previous variants, and is therefore done at the level of the upper edge of the panels 41 to 44, which is inserted between the upper strip 51 of the lateral sides 5 of the container 1 and the wall. 81 which faces it and which in this case belongs to the gutter 18, uniformly on all sides 5.
  • the gutter 18 (and the profile 21) has a trapezoidal outline, precisely so that one of its walls 81 is oriented parallel to a lateral side 5 in order to achieve a groove 8 of uniform width in depth as well as over the whole of the periphery, a width which is provided to ensure the fixing of the coating in a manner uniformly distributed over the periphery of the container.
  • This same trapezoidal shape concomitantly makes it possible to ensure a closure by means of a cover with much better mechanical strength.
  • figures 14 to 16 resumes that of the figure 1 , with the addition of reliefs projecting from the walls 51, 81 of the groove 8 inwardly in order to strengthen the attachment of the coating 40 to the container 1.
  • the studs 30 opposite respectively protruding from the walls 81, 51 are inserted into orifices 52 of the same shape made in the upper edge of the cardboard covering 40, resulting in said covering being retained in the groove 8.
  • the studs 30 can be replaced by cups 31 in the form of portions of spheres which exert a stress in recesses of corresponding shape stamped or stamped at the corresponding locations in the upper edge of the coating 40.
  • the variant of figure 18 comprises reliefs 32 made in the corners of the container, which retain the sides 41 to 44 by means of slots made in the upper portions of their side edges (not shown).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Cartons (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

Emballage notamment apte à contenir des aliments comportant d'une part un conteneur en matériau de type plastique doté d'un fond et d'une paroi périphérique (5) continue, le bord supérieur (6) de la paroi périphérique (5) opposé au fond délimitant une ouverture et étant muni d'un rebord périphérique (7) s'étendant radialement vers l'extérieur, et d'autre part un revêtement extérieur (40) dont la découpe est réalisée dans un flan plan en matériau recyclable de type carton et disposé au contact de la face extérieure de la paroi périphérique (5), des moyens de liaison détachable du revêtement (40) au conteneur étant prévus. Lesdits moyens de liaison consistent en une gorge périphérique (8) parcourant la face externe de la paroi périphérique (5) du conteneur délimitant un espace de logement ajusté pour une bordure supérieure du revêtement (40) de forme adaptée à la forme de la gorge (8).Packaging in particular suitable for containing food comprising on the one hand a container made of plastic-type material provided with a bottom and a continuous peripheral wall (5), the upper edge (6) of the peripheral wall (5) opposite the bottom delimiting an opening and being provided with a peripheral rim (7) extending radially outwards, and on the other hand an outer covering (40) the cut-out of which is made in a flat blank of recyclable material of the cardboard type and arranged in contact with the outer face of the peripheral wall (5), means for detachably connecting the coating (40) to the container being provided. Said connecting means consist of a peripheral groove (8) running through the outer face of the peripheral wall (5) of the container delimiting a housing space adjusted for an upper edge of the covering (40) of a shape adapted to the shape of the groove ( 8).

Description

La présente invention concerne des emballages, et plus particulièrement des barquettes et boîtes notamment destinées à contenir des aliments. Ces emballages présentent un conteneur offrant un espace ou volume intérieur délimité par un fond et des côtés latéraux, généralement en matière plastique et fabriqué de manière classique par exemple par thermoformage. Ils comportent ensuite un moyen de fermeture, par un couvercle ou par un film scellé ou non. Pour que les manipulations de ces emballages, lorsqu'ils sont remplis, ne soient pas rendues malaisées par le poids du contenu, le conteneur doit présenter une tenue mécanique qui impacte au moins certaines de ses dimensions, en particulier les épaisseurs des parois qui le délimitent.The present invention relates to packaging, and more particularly to trays and boxes intended in particular to contain food. These packages have a container offering an interior space or volume delimited by a bottom and lateral sides, generally made of plastic and manufactured in a conventional manner, for example by thermoforming. They then include a means of closure, by a cover or by a sealed film or not. So that the handling of these packages, when they are filled, are not made difficult by the weight of the contents, the container must have a mechanical strength which impacts at least some of its dimensions, in particular the thicknesses of the walls which delimit it. .

Cependant, on cherche de manière générale à réduire les quantités de matière plastique utilisées, en vue de réduire notamment les bilans dits carbone qui leur sont associées. Ces bilans sont notamment impactés par les opérations de traitement des déchets, l'exigence d'un recyclage le plus abouti possible y participant largement. Réduire les bilans carbone a évidemment aussi une incidence économique directe, les coûts de traitement se répercutant évidemment sur les prix des emballages, que supportent in fine les consommateurs.However, it is generally sought to reduce the quantities of plastic material used, in particular with a view to reducing the so-called carbon balances associated with them. These balances are notably impacted by waste treatment operations, the requirement for the most successful recycling possible greatly contributing to this. Reducing carbon footprints obviously also has a direct economic impact, with processing costs obviously having repercussions on the prices of packaging, which consumers ultimately bear.

Pour ces raisons, l'industrie de l'emballage cherche à diminuer la quantité de plastique employée dans la fabrication des barquettes, boîtes et autres contenants. Parmi les solutions proposées, il est notamment préconisé d'utiliser une structure externe en matériau cartonné, qui renforce la rigidité de l'emballage lorsque les épaisseurs des parois sont amincies. La structure de renforcement externe mise en œuvre améliore la tenue mécanique globale du conteneur en compensant le manque de rigidité résultant du déficit de matière plastique. Or, il existe déjà des filières de recyclage pour le carton et il est prévu que tous les emballages plastique puissent être recyclés prochainement.For these reasons, the packaging industry is seeking to reduce the amount of plastic used in the manufacture of trays, boxes and other containers. Among the solutions proposed, it is in particular recommended to use an external structure made of cardboard material, which reinforces the rigidity of the packaging when the thicknesses of the walls are thinned. The external reinforcement structure implemented improves the overall mechanical strength of the container by compensating for the lack of rigidity resulting from the lack of plastic material. However, there are already recycling channels for cardboard and it is planned that all plastic packaging can be recycled soon.

Cependant, les solutions basées sur une structure cartonnée présentent encore de multiples inconvénients, en termes de procédé de fabrication d'abord, mais aussi sur les questions environnementales liées au recyclage. Certaines configurations proposées nécessitent en effet un collage de la structure cartonnée sur les parois externes du récipient, ce qui a pour conséquence de rendre la fabrication plus complexe, et par conséquent plus onéreuse. C'est par exemple le cas de la configuration décrite dans le document WO2015187016 . Un second inconvénient de cette solution tient à la colle elle-même, qui est une substance potentiellement nocive pour l'environnement au moment du recyclage des emballages, lesquels sont souvent brûlés à cette occasion. Enfin, ce type de configuration empêche, ou à tout le moins rend problématique le recyclage sélectif de l'emballage car il est difficile de séparer le conteneur en plastique de la structure extérieure de renforcement, sans même mentionner l'existence de résidus de colle sur l'un ou l'autre élément en cas de séparation.However, solutions based on a cardboard structure still have multiple drawbacks, in terms of the manufacturing process first, but also in environmental issues related to recycling. Certain configurations proposed indeed require gluing of the cardboard structure. on the outer walls of the container, which has the consequence of making the manufacture more complex, and consequently more expensive. This is for example the case of the configuration described in the document WO2015187016 . A second drawback of this solution is due to the glue itself, which is a substance potentially harmful to the environment when the packaging is recycled, which is often burned on this occasion. Finally, this type of configuration prevents, or at the very least makes problematic the selective recycling of the packaging because it is difficult to separate the plastic container from the outer reinforcing structure, without even mentioning the existence of adhesive residues on the packaging. either element in the event of separation.

Dans une tentative de trouver une réponse à ces questions, certaines solutions sont dépourvues de colle entre le conteneur en plastique et la structure en carton, mais cette dernière doit faire l'objet d'un préformage (passage d'une configuration en deux dimensions à un configuration en trois dimensions) avant d'être appliquée sur le conteneur. Ce préformage peut nécessiter, dans certaines configurations proposées, l'emploi de colle non pas entre le plastique et le carton, mais entre des parties de la structure cartonnée à fixer l'une à l'autre pour lui conférer la forme tridimensionnelle. C'est le cas notamment dans la solution décrite dans le document WO2015187016 ou dans celle qui apparaît dans le document FR 2 979 329 .In an attempt to find an answer to these questions, some solutions are devoid of glue between the plastic container and the cardboard structure, but the latter must be preformed (change from a two-dimensional configuration to a three-dimensional configuration) before being applied to the container. This preforming may require, in certain proposed configurations, the use of glue not between the plastic and the cardboard, but between parts of the cardboard structure to be fixed to one another to give it the three-dimensional shape. This is the case in particular in the solution described in the document WO2015187016 or in the one that appears in the document FR 2 979 329 .

Dans d'autres cas, cependant, ce préformage en trois dimensions peut se passer de colle et simplement résulter de la conception initiale d'un flan cartonné plat comportant des découpes et des rainages permettant un pliage et un assemblage tridimensionnel, comme c'est le cas par exemple de la configuration décrite dans le document WO9323297 .In other cases, however, this three-dimensional preforming may dispense with glue and simply result from the initial design of a flat card stock blank with cutouts and creases allowing three-dimensional folding and assembly, as is the case. case for example of the configuration described in the document WO9323297 .

Toutes ces structures cartonnées comportent un fond et des parois périphériques, lesdites parois comportant alors des pans qui se chevauchent lors du formage en trois dimensions, puisqu'ils doivent être assemblés mécaniquement l'un à l'autre. Ensuite, leur fixation aux conteneurs en plastique résulte en général de surfaces ou d'arêtes s'interpénétrant pour les verrouiller l'une à l'autre en empêchant tout déplacement relatif dans une direction perpendiculaire au plan du fond du récipient.All these cardboard structures have a bottom and peripheral walls, said walls then comprising sections which overlap during the three-dimensional forming, since they must be mechanically assembled to one another. Then, their attachment to the plastic containers generally results from surfaces or ridges interpenetrating to lock them to each other preventing any relative movement in a direction perpendicular to the plane of the bottom of the container.

L'invention propose une solution considérablement simplifiée pour aboutir au même résultat, avec une configuration double à structure externe en matériau de type carton ou autre matériau bio-sourcé et à emballage plastique interne, recyclables, conçue pour rendre l'assemblage beaucoup plus facile et, par conséquent, bien plus aisément intégrable à une ligne industrielle de fabrication automatisable. Le produit fini est un emballage bi-matière, typiquement en plastique, garantissant l'alimentarité, renforcé par du carton, ne nécessitant aucune opération de collage et permettant une séparation facile des deux éléments de sorte que le tri et le recyclage ne posent aucun problème. L'emballage obtenu est rigide bien que les épaisseurs de plastique soient sensiblement réduites au moins au niveau des côtés latéraux, la perte de résistance liée à la réduction d'épaisseur des feuilles plastiques étant compensée par la couche externe en un matériau suffisamment rigide de type carton ou autre matériau bio-sourcé. En outre, l'utilisation de la structure de renforcement cartonnée ouvre de nombreuses perspectives en termes de décoration/communication sur ce type d'emballages.The invention provides a considerably simplified solution to achieve the same result, with a dual configuration with an external structure made of cardboard-type material or other bio-sourced material and internal plastic packaging, recyclable, designed to make assembly much easier and , consequently, much more easily integrable into an industrial automation line. The finished product is a bi-material packaging, typically in plastic, guaranteeing food quality, reinforced with cardboard, requiring no gluing operation and allowing easy separation of the two elements so that sorting and recycling do not pose any problem. . The packaging obtained is rigid although the plastic thicknesses are appreciably reduced at least at the level of the lateral sides, the loss of resistance linked to the reduction in thickness of the plastic sheets being compensated by the external layer made of a sufficiently rigid material of the type. cardboard or other bio-sourced material. In addition, the use of the cardboard reinforcement structure opens up many perspectives in terms of decoration / communication on this type of packaging.

L'utilisation de carton permet ainsi d'implémenter l'impression/couleur sur le carton recto/verso, mais aussi de faire de l'embossage en relief sur le carton pendant le formage, et enfin d'avoir un pas d'empilage constant. Pour ce qui concerne l'emballage plastique, l'existence d'une structure externe cartonnée selon l'invention n'a pas d'impact sur la conception des modes de fermeture possibles, et l'emballage peut ainsi être doté d'un couvercle séparé, d'un couvercle à charnière, d'un film scellable, d'un film de fermeture étirable etc...The use of cardboard thus makes it possible to implement printing / color on the front / back cardboard, but also to emboss in relief on the cardboard during forming, and finally to have a constant stacking step. . As regards the plastic packaging, the existence of a cardboard outer structure according to the invention has no impact on the design of the possible closure methods, and the packaging can thus be provided with a cover. separate, hinged cover, sealable film, stretch closure film etc.

De fait, pour synthétiser, l'emballage de l'invention, notamment apte à contenir des aliments, comporte classiquement d'une part un conteneur en matériau de type plastique doté d'un fond et d'une paroi périphérique continue. Le bord supérieur de la paroi périphérique opposé au fond délimite une ouverture et est muni d'un rebord périphérique s'étendant radialement vers l'extérieur. L'emballage de l'invention comporte d'autre part un revêtement extérieur dont la découpe est réalisée dans un flan plan en matériau recyclable de type carton et disposé au contact de la face extérieure de la paroi périphérique à l'état assemblé. Il présente également de manière connue des moyens de liaison détachable du revêtement au conteneur.In fact, to summarize, the packaging of the invention, in particular suitable for containing food, conventionally comprises on the one hand a container made of plastic-type material provided with a bottom and a continuous peripheral wall. The upper edge of the peripheral wall opposite the bottom defines an opening and is provided with a peripheral rim extending radially outwards. The packaging of the invention also comprises an outer covering, the cut of which is made in a flat blank of recyclable material of cardboard type and placed in contact with the outer face of the peripheral wall in the assembled state. It also presents, in a known manner, detachable connection means of the coating to the container.

Selon l'invention, lesdits moyens de liaison consistent en une gorge périphérique parcourant la face externe de la paroi périphérique du conteneur, s'ouvrant en direction du fond du conteneur et étant délimitée par deux parois d'allure parallèle respectivement constituées par une bande supérieure de la paroi périphérique du conteneur jouxtant le bord supérieur et par une paroi extérieure du rebord périphérique en regard de ladite bande, ladite gorge délimitant un espace de logement ajusté pour une bordure supérieure du revêtement de forme adaptée à la forme de la gorge.According to the invention, said connecting means consist of a peripheral groove running through the outer face of the peripheral wall of the container, opening towards the bottom of the container and being delimited by two parallel-looking walls respectively formed by an upper strip. of the peripheral wall of the container adjoining the upper edge and by an outer wall of the peripheral rim facing said strip, said groove delimiting a housing space adjusted for an upper edge of the liner having a shape adapted to the shape of the groove.

Cette solution met en œuvre une fixation purement mécanique qui entoure le conteneur et peut donc s'exercer de manière continue sur la périphérie de l'emballage. Il s'agit de fait d'un sertissage plastique en partie supérieure du revêtement, qui maintient en place l'habillage constitué par ce dernier. L'enveloppe en matériau cartonné est conformée pour s'adapter au volume du conteneur, et est enserrée entre les deux parois d'une gorge étroite, ce qui aboutit de fait à répartir la contrainte de fixation du revêtement au conteneur sur tout le pourtour. La fixation sur toute la périphérie n'impose par ailleurs pas de conformer tri-dimensionnellement le revêtement avant assemblage sur le conteneur, il peut suffire de l'insérer dans le moule avant thermoformage.This solution implements a purely mechanical fixing which surrounds the container and can therefore be exerted continuously on the periphery of the packaging. This is in fact a plastic crimping in the upper part of the covering, which keeps the covering formed by the latter in place. The envelope of cardboard material is shaped to adapt to the volume of the container, and is clamped between the two walls of a narrow groove, which in fact results in distributing the stress of fixing the coating to the container over the entire periphery. Fixing over the entire periphery does not require, moreover, to conform the coating three-dimensionally before assembly on the container, it may suffice to insert it into the mold before thermoforming.

Sur un plan purement mécanique, cette répartition des efforts due au sertissage périphérique supprime de plus la nécessité de solutions mécaniques plus complexes, qui sont à l'inverse nécessaires si la fixation détachable ne prend place qu'en quelques endroits discrets de l'emballage : il faut dès lors y atteindre une efficacité de fixation plus élevée, le cas échéant en combinaison avec des moyens d'attacher entre elles certaines parties du revêtement.On a purely mechanical level, this distribution of forces due to the peripheral crimping also eliminates the need for more complex mechanical solutions, which are on the other hand necessary if the detachable fixing takes place only in a few discrete places of the packaging: it is therefore necessary to achieve a higher fixing efficiency therein, where appropriate in combination with means for attaching certain parts of the coating to one another.

Selon l'invention, de préférence, au moins la bande supérieure de la paroi périphérique du conteneur et la paroi extérieure en regard de ladite bande sont inclinées d'un angle compris entre 5° et 45° par rapport à la verticale. La pente donnée aux flancs du conteneur, autorisant une fabrication par thermoformage en contredépouille du matériau plastique, permet bien de solidariser l'ensemble sans additif quelconque (colle, laque...). Elle facilite de plus la désolidarisation des deux éléments de manière aisée en vue du recyclage de chacun des éléments. De fait, le conteneur plastique, grâce à sa thermoformabilité, vient enserrer la partie supérieure du carton positionné dans le moule avant thermoformage, par effet de contre-dépouille sur tout ou partie de la périphérie.According to the invention, preferably, at least the upper strip of the peripheral wall of the container and the outer wall facing said strip are inclined at an angle of between 5 ° and 45 ° with respect to the vertical. The slope given to the sides of the container, allowing manufacture by undercut thermoforming of the plastic material, allows the assembly to be joined together without any additive (glue, lacquer, etc.). It also facilitates the separation of the two elements easily for the recycling of each of the elements. In fact, the plastic container, thanks to its thermoformability, encloses the part top of the cardboard positioned in the mold before thermoforming, by undercut effect on all or part of the periphery.

Il est à noter que l'effet des contre-dépouilles est particulièrement efficace dans les angles, où s'effectue un renforcement naturel du fait de l'existence de contre-dépouilles dans deux directions différentes, dans l'hypothèse de contenants polygonaux à pente latérale. L'existence d'arêtes dans lesdits angles y rend le plastique, et par conséquent la contre-dépouille, plus rigide, de sorte que le maintien du carton sur le plastique est plus performant.It should be noted that the effect of the undercuts is particularly effective in the angles, where there is a natural reinforcement due to the existence of undercuts in two different directions, in the hypothesis of polygonal containers with a slope. lateral. The existence of ridges in said angles makes the plastic there, and consequently the undercut, more rigid, so that the maintenance of the cardboard on the plastic is more efficient.

Dans la présente invention, de préférence encore, la largeur de la gorge périphérique est égale à l'épaisseur du flan du revêtement extérieur. Il n'est en effet et comme mentionné nul besoin de prévoir une forme de revêtement comportant des portions qui se chevauchent lors que le revêtement est au contact de l'emballage, créant ainsi des surépaisseurs et obligeant à l'utilisation d'une surface de carton supérieure à la surface de l'emballage à recouvrir.In the present invention, more preferably, the width of the peripheral groove is equal to the thickness of the blank of the outer covering. There is in fact and as mentioned no need to provide a form of coating comprising portions which overlap when the coating is in contact with the packaging, thus creating extra thicknesses and requiring the use of a surface of carton greater than the surface of the packaging to be covered.

Par ailleurs, la gorge peut être prévue axialement discontinue, bien que toujours périphérique : quelle que soit sa forme exacte et le nombre des interruptions, elle parcourt le pourtour de l'emballage. En d'autres termes, quelle que soit la forme prévue, la nature générale de la gorge reste périphérique. Ainsi, ladite gorge peut comporter une succession de créneaux, la fréquence du crénelage devant rester compatible avec l'exigence de parcours périphérique.Furthermore, the groove can be provided axially discontinuous, although it is always peripheral: whatever its exact shape and the number of interruptions, it runs around the periphery of the packaging. In other words, whatever the intended shape, the general nature of the groove remains peripheral. Thus, said groove may comprise a succession of slots, the frequency of the aliasing having to remain compatible with the requirement of peripheral path.

Selon une configuration possible, les créneaux peuvent être de forme trapézoïdale, le plus petit des côtés parallèles des trapèzes étant dans l'alignement du fond de la gorge crénelée. Cette forme spécifique procure également des contre-dépouilles aboutissant à renforcer le sertissage et à garantir le maintien du revêtement externe autour du conteneur plastique.According to one possible configuration, the crenellations can be trapezoidal in shape, the smallest of the parallel sides of the trapezoids being in alignment with the bottom of the crenellated groove. This specific shape also provides undercuts resulting in reinforcing the crimping and in guaranteeing the maintenance of the external coating around the plastic container.

Dans la même perspective, l'une au moins des parois formant la gorge peut comporter des reliefs dépassant vers l'intérieur de la gorge, créant également des contre-dépouilles bien marquées renforçant encore la qualité et la pérennité du sertissage. Selon une possibilité, ces reliefs peuvent s'insérer dans des orifices ou fentes de formes correspondantes pratiqués dans la bordure supérieure du revêtement. Dans ce cas, les reliefs et les orifices dans lesquels ils s'insèrent réalisent de fait une sorte de rivetage. Alternativement, les reliefs peuvent se loger dans des embossages de formes correspondantes pratiqués dans la bordure supérieure du revêtement, et dont ils épousent la forme.In the same perspective, at least one of the walls forming the groove may include reliefs projecting towards the inside of the groove, also creating well-marked undercuts further enhancing the quality and durability of the crimping. According to one possibility, these reliefs can be inserted into orifices or slots of corresponding shapes made in the upper edge of the coating. In this case, the reliefs and the orifices in which they are inserted in fact produce a kind of riveting. Alternatively, the reliefs can accommodate in embossings of corresponding shapes made in the upper edge of the covering, and of which they follow the shape.

De fait, la découpe du flan du revêtement extérieur peut comporter au moins une portion de forme et de surface égales à la forme et à la surface de la paroi périphérique du conteneur. En d'autres termes, le revêtement de la paroi périphérique peut être entièrement couvrant et ne comporter que des pans ou portions qui ne se recouvrent pas lorsqu'ils sont au contact celle-ci. Additionnellement, la découpe du flan peut comporter une portion de forme et de surface égales à la forme et à la surface du fond du conteneur. Ainsi, le revêtement peut aller jusqu'à couvrir le fond et la paroi périphérique du conteneur. Dans tous les cas, l'absence de portions chevauchantes le cas échéant munies de moyens de fixation mutuelle permet d'utiliser un modèle plan de découpe du revêtement le plus simple possible, facile à fabriquer et à utiliser, économe en surface de carton.In fact, the cutout of the blank of the outer covering may include at least a portion of shape and area equal to the shape and area of the peripheral wall of the container. In other words, the coating of the peripheral wall may be completely covering and only comprise sections or portions which do not overlap when they are in contact with the latter. Additionally, the blank cutout may include a portion of shape and area equal to the shape and area of the bottom of the container. Thus, the coating can go as far as covering the bottom and the peripheral wall of the container. In all cases, the absence of overlapping portions, where appropriate provided with mutual fixing means, makes it possible to use a plan model for cutting the covering that is as simple as possible, easy to manufacture and to use, economical in terms of cardboard area.

Lorsque le conteneur comporte un fond polygonal, par exemple rectangulaire, et des côtés latéraux formant la paroi périphérique, le revêtement peut par exemple en pratique comporter un fond polygonal de même surface que le fond du conteneur, séparé par des rainages de pans latéraux de surfaces égales aux surfaces des côtés latéraux du conteneur incluant la paroi de la gorge.When the container has a polygonal bottom, for example rectangular, and lateral sides forming the peripheral wall, the coating may for example in practice include a polygonal bottom with the same surface area as the bottom of the container, separated by grooves from the lateral surfaces of the surfaces. equal to the surfaces of the lateral sides of the container including the wall of the groove.

Pour de tels emballages à volume prismatique, le sertissage peut être renforcé de manière particulière, au niveau des coins : au moins un relief dépassant de la paroi du conteneur peut équiper chaque angle de la gorge, les pans latéraux du revêtement étant alors munis de fentes épousant la portion de ces reliefs présente dans la section de gorge de leur côté latéral d'insertion.For such packaging with prismatic volume, the crimping can be reinforced in a particular way, at the level of the corners: at least one relief projecting from the wall of the container can equip each corner of the groove, the side panels of the coating then being provided with slots. matching the portion of these reliefs present in the groove section of their lateral insertion side.

La gorge de sertissage est de fait au moins partiellement pratiquée dans le rebord s'étendant radialement vers l'extérieur à partir du bord supérieur du conteneur, lequel peut aussi avoir pour fonction, au moins dans certaines configurations de l'emballage, de permettre la fermeture d'un couvercle par exemple par clipsage d'un profilé périphérique d'un couvercle dans une gouttière de forme correspondante réalisée dans le rebord périphérique du conteneur.The crimping groove is in fact at least partially formed in the flange extending radially outwards from the upper edge of the container, which may also have the function, at least in certain configurations of the packaging, of allowing the crimping. closing a cover, for example by clipping a peripheral profile of a cover into a gutter of corresponding shape made in the peripheral rim of the container.

Ainsi, selon une configuration possible, la paroi extérieure de la gorge peut appartenir à une gouttière de section transversale trapézoïdale, qui présente une paroi oblique de même inclinaison que la portion de paroi périphérique du conteneur auquel elle fait face. Le parallélisme des deux parois de la gorge se retrouve bien dans cette configuration, et la distance de la paroi de la gouttière à la paroi périphérique du conteneur est prévue du même ordre de grandeur que l'épaisseur du flan cartonné à partir duquel le revêtement est réalisé.Thus, according to one possible configuration, the outer wall of the groove may belong to a gutter of trapezoidal cross section, which has a oblique wall with the same inclination as the portion of the peripheral wall of the container which it faces. The parallelism of the two walls of the groove is found in this configuration, and the distance from the wall of the gutter to the peripheral wall of the container is provided of the same order of magnitude as the thickness of the cardboard blank from which the coating is realized.

Dans certaines configurations d'emballages, ladite gouttière peut être prévue axialement discontinue. Il s'agit par exemple des emballages sans couvercles attenants, ceux qui sont operculés au moyen d'un film scellé sur les rebords du récipient. Dans une telle hypothèse, les rebords du conteneur servent de support de fixation. Une gouttière axialement discontinue renforce la rigidité de la surface de scellage. Il est donc prévu de ne pas faire courir la gouttière de manière continue, mais de l'interrompre régulièrement.In certain packaging configurations, said gutter may be provided axially discontinuous. This is for example packaging without adjoining lids, those which are sealed by means of a film sealed on the edges of the container. In such a case, the edges of the container serve as a fixing support. An axially discontinuous gutter enhances the rigidity of the sealing surface. It is therefore planned not to run the gutter continuously, but to interrupt it regularly.

Selon une possibilité applicable à toutes les configurations d'emballage présentées auparavant, le revêtement peut présenter des découpes, par exemple des figures géométriques simples, ayant une première vocation décorative et permettant notamment de pouvoir voir le produit emballé. Il est d'ailleurs à noter que l'utilisation de revêtements cartonnés permet une utilisation extensive de ce support à des fins de décoration ou d'information, par impression sur les faces du revêtement, découpes de multiples formes, réalisation d'emboutissages décoratifs etc. En fait, les parois latérales de l'habillage peuvent bénéficier de toutes sortes de traitements permettant un effet marketing plus appuyé, pouvant d'ailleurs le cas échéant renforcer sa solidarisation au conteneur.According to one possibility applicable to all the packaging configurations presented above, the coating may have cutouts, for example simple geometric figures, having a first decorative vocation and in particular making it possible to be able to see the packaged product. It should also be noted that the use of cardboard coverings allows extensive use of this support for decoration or information purposes, by printing on the surfaces of the cover, cutting out multiple shapes, making decorative stampings, etc. . In fact, the side walls of the casing can benefit from all kinds of treatments allowing a stronger marketing effect, which can moreover, if necessary, strengthen its attachment to the container.

Ainsi, secondairement, on peut par exemple prévoir que la paroi périphérique du conteneur présente des reliefs localisés aux niveaux des découpes du revêtement, et dimensionnées pour s'y insérer. Dans ce cas, un blocage supplémentaire dudit revêtement périphérique est réalisé selon une orientation parallèle aux côtés du conteneur, dans la direction du fond de celui-ci.Thus, secondarily, for example, provision can be made for the peripheral wall of the container to have reliefs located at the level of the cutouts of the coating, and dimensioned to fit therein. In this case, an additional blocking of said peripheral coating is carried out in an orientation parallel to the sides of the container, in the direction of the bottom thereof.

D'autres buts et avantages de la présente invention apparaîtront au cours de la description qui va suivre se rapportant à des modes de réalisation qui ne sont donnés qu'à titre d'exemples indicatifs et non limitatifs.Other objects and advantages of the present invention will become apparent during the description which follows relating to embodiments which are given only by way of indicative and non-limiting examples.

La compréhension de cette description sera d'ailleurs facilitée en se référant aux dessins joints en annexe, qui représentent des configurations de l'invention, et dans lesquels :

  • La figure 1 représente une vue de dessus en perspective d'un emballage filmable conforme à l'invention ;
  • La figure 2 montre, en vue en section, le même emballage ;
  • La figure 3 illustre le fonctionnement de la gorge périphérique dans la version des figures 1 et 2 ;
  • La figure 4 illustre une découpe de revêtement cartonné pour un tel emballage, en vue en élévation ;
  • La figure 5 représente une variante, en vue perspective côté ouverture du conteneur, d'un emballage à opercule scellable muni d'un revêtement cartonné identique aux configurations précédentes ;
  • La figure 6 montre le même emballage, en vue perspective côté fond ;
  • La figure 7 montre, en vue en section, l'emballage des figures 5 et 6 ;
  • La figure 8 en illustre un détail agrandi, en vue en section, au niveau de la gorge périphérique réalisant le sertissage du revêtement cartonné ;
  • La figure 9 représente, en vue perspective par-dessus, une variante d'emballage à couvercle à gouttière de fermeture périphérique, le couvercle étant figuré en position ouverte ;
  • La figure 10 montre le même emballage, en vue perspective par en dessous ;
  • La figure 11 illustre, en vue en section, la variante des figures 9 et 10, le couvercle étant figuré en position fermée ;
  • La figure 12 montre un agrandissement d'une section du même emballage au niveau de la gorge périphérique réalisant le sertissage du revêtement cartonné, le couvercle étant figuré en position fermée ;
  • La figure 13 représente un agrandissement analogue, côté charnière, le couvercle étant en position ouverte ;
  • La figure 14 représente, en vue perspective, une variante de l'emballage des figures 1 à 3 avec une gorge à reliefs en plots/cupules dépassant dans l'intérieur de ladite gorge et coopérant avec des orifices/embossages circulaires pratiqués dans la bordure supérieure des pans du revêtement ;
  • La figure 15 montre le même emballage en vue en section ;
  • La figure 16 est un agrandissement de la section de la gorge périphérique d'un tel emballage avec renfort de la solidarisation du revêtement cartonné par des plots traversants coopérant avec des orifices de la bordure supérieure des pans du revêtement ;
  • La figure 17 montre le même agrandissement de la section de la gorge périphérique, le renforcement du sertissage étant réalisé par des paires de cupules/embossages arrondis ;
  • La figure 18 représente une variante de l'emballage des figures 1 à 3 avec des reliefs de coins ;
  • La figure 19 illustre une variante avec une gorge discontinue crénelée ;
  • La figure 20 montre le même emballage en vue en section ; et
  • La figure 21 représente un détail agrandi, en vue en perspective, d'un tel emballage à gorge discontinue crénelée.
The understanding of this description will moreover be facilitated by referring to the accompanying drawings, which represent configurations of the invention, and in which:
  • The figure 1 shows a top perspective view of a filmable packaging according to the invention;
  • The figure 2 shows, in section view, the same packaging;
  • The figure 3 illustrates the operation of the peripheral groove in the version of figures 1 and 2 ;
  • The figure 4 illustrates a cardboard cover blank for such a package, in elevation view;
  • The figure 5 shows a variant, in perspective view on the opening side of the container, of a packaging with a sealable lid provided with a cardboard covering identical to the previous configurations;
  • The figure 6 shows the same packaging, in a perspective view from the bottom;
  • The figure 7 shows, in section view, the packaging of figures 5 and 6 ;
  • The figure 8 illustrates an enlarged detail, in sectional view, at the level of the peripheral groove carrying out the crimping of the cardboard covering;
  • The figure 9 shows, in a perspective view from above, a variant of packaging with a lid with a peripheral closing gutter, the lid being shown in the open position;
  • The figure 10 shows the same packaging, in perspective view from below;
  • The figure 11 illustrates, in sectional view, the variant of figures 9 and 10 , the cover being shown in the closed position;
  • The figure 12 shows an enlargement of a section of the same packaging at the level of the peripheral groove carrying out the crimping of the cardboard covering, the cover being shown in the closed position;
  • The figure 13 shows a similar enlargement, hinge side, the cover being in the open position;
  • The figure 14 shows, in perspective view, a variant of the packaging of figures 1 to 3 with a groove with raised studs / cups projecting into the interior of said groove and cooperating with circular orifices / embossings made in the upper edge of the sides of the coating;
  • The figure 15 shows the same packaging in section view;
  • The figure 16 is an enlargement of the section of the peripheral groove of such a package with reinforcement of the attachment of the cardboard covering by through studs cooperating with orifices in the upper edge of the sides of the covering;
  • The figure 17 shows the same enlargement of the section of the peripheral groove, the reinforcement of the crimping being carried out by pairs of rounded cups / embossings;
  • The figure 18 represents a variant of the packaging of figures 1 to 3 with reliefs of corners;
  • The figure 19 illustrates a variant with a discontinuous crenellated groove;
  • The figure 20 shows the same packaging in section view; and
  • The figure 21 shows an enlarged detail, in perspective view, of such a crenellated discontinuous groove package.

En référence d'abord aux figures 1 à 4, une première variante d'emballage de l'invention comporte un conteneur 1 filmable présentant un fond 4 en l'occurrence rectangulaire et quatre côtés 5 formant une paroi périphérique continue et dont le bord supérieur 6 se prolonge radialement vers l'extérieur par un rebord 7 muni d'une gorge 8 périphérique dont le fond forme le bord 6. Le revêtement cartonné 40 (voir en figure 4) épouse de fait les faces externes du fond 4 et des côtés latéraux 5, les chants latéraux de chaque pan 41 à 44 se rejoignant au niveau des arêtes d'angle de la paroi périphérique 5 continue du conteneur 1. Les rainages 46 à 49 marquant les lignes de pliage entre le fond 45 et les pans latéraux 41 à 44 du revêtement 40 cartonné recouvrent les arêtes de liaison fond 4/paroi périphérique 5 du conteneur 1. La bordure extérieure desdits pans 41 à 44 est sertie dans la gorge 8, entre une bande supérieure 51 des côtés latéraux 5 et la paroi extérieure 81 qui relie le bord supérieur 6 et la partie radiale du rebord périphérique 7.With reference first to figures 1 to 4 , a first packaging variant of the invention comprises a filmable container 1 having a bottom 4 in this case rectangular and four sides 5 forming a continuous peripheral wall and the upper edge 6 of which extends radially outwards by a rim 7 provided with a peripheral groove 8, the bottom of which forms the edge 6. The cardboard covering 40 (see figure 4 ) actually follows the external faces of the bottom 4 and the lateral sides 5, the lateral edges of each panel 41 to 44 meeting at the level of the corner edges of the continuous peripheral wall 5 of the container 1. The grooves 46 to 49 marking the fold lines between the bottom 45 and the side panels 41 to 44 of the cardboard covering 40 cover the bottom 4 / peripheral wall 5 connecting ridges of the container 1. The outer edge of said panels 41 to 44 is crimped in the groove 8, between an upper band 51 of the lateral sides 5 and the outer wall 81 which connects the upper edge 6 and the radial part of the peripheral rim 7.

Plus précisément, la gorge périphérique 8 comporte une paroi 81 d'allure parallèle et en regard d'une bande supérieure 51 de chaque côté 5, ces deux parois et le rebord 6 qui les relie constituant de fait une gorge 8 de largeur égale à l'épaisseur de chaque côté cartonné 41, 43 du revêtement 40. Sur la totalité de la périphérie de l'emballage, le revêtement cartonné 40 est dès lors enserré dans la gorge 8 périphérique, et par conséquent mécaniquement bien tenu sur tout le pourtour du conteneur 1. Ce mode de fixation interdit que les pans 41 à 44 comportent des portions se recouvrant, puisqu'il n'y a de place que pour une seule épaisseur de carton dans la gorge 8.More precisely, the peripheral groove 8 comprises a wall 81 of parallel appearance and facing an upper strip 51 on each side 5, these two walls and the flange 6 which connects them constituting in fact a groove 8 of width equal to l. 'thickness of each cardboard side 41, 43 of the covering 40. Over the entire periphery of the packaging, the cardboard covering 40 is therefore clamped in the peripheral groove 8, and therefore mechanically well held over the entire periphery of the container 1. This method of fixing prevents the panels 41 to 44 from having overlapping portions, since there is only room for a single thickness of cardboard in the groove 8.

Le revêtement cartonné 40 (voir en figure 4) est de fait réalisé à partir d'un flan plan découpé et rainé de sorte que le fond 45 et les pans 41 à 44 constituant les côtés latéraux soient séparés par des rainages 46 à 49 qui constituent les lignes de pliage entre eux. Il n'y a, contrairement aux solutions de l'art antérieur, pas de moyens mécaniques de fixation mutuelle des pans 41 à 44, par exemple via des liaisons pattes/incisions ou par collage, qui nécessiterait dans tous les cas des pans ou excroissances permettant un recouvrement plus ou moins partiel des pans entre eux, permettant la mise en œuvre pratique d'une liaison mécanique.The cardboard cover 40 (see figure 4 ) is in fact made from a planar blank cut and grooved so that the bottom 45 and the panels 41 to 44 constituting the lateral sides are separated by grooves 46 to 49 which constitute the fold lines between them. Unlike the solutions of the prior art, there is no mechanical means for the mutual fixing of the sections 41 to 44, for example via tabs / incisions connections or by gluing, which would in all cases require sections or protuberances. allowing a more or less partial overlap of the sections between them, allowing the practical implementation of a mechanical connection.

Les côtés latéraux du conteneur 1 sont inclinés, dans toutes les versions présentées, car cela procure un effet de contre-dépouille sur la périphérie, de manière renforcée dans les angles du volume du fait de la double direction de la pente et de la plus grande rigidité du récipient qui en résulte dans cette région. Cette contre-dépouille, en pratique d'un angle de 5° et 45°, améliore sensiblement la solidarisation du revêtement cartonné 40 tel que montré à la figure 4 au volume plastique du conteneur 1. Mécaniquement, les forces de contact au niveau de la paroi 81 présentent une composante principalement horizontale, mais aussi une composante verticale, moins importante compte tenu du degré d'inclinaison de la face oblique, laquelle est parallèle aux côtés 5 latéraux.The lateral sides of the container 1 are inclined, in all the versions presented, because this provides an undercut effect on the periphery, in a reinforced way in the angles of the volume due to the double direction of the slope and the greater resulting container stiffness in this region. This undercut, in practice at an angle of 5 ° and 45 °, appreciably improves the attachment of the cardboard covering 40 as shown in figure 4 to the plastic volume of the container 1. Mechanically, the contact forces at the level of the wall 81 have a mainly horizontal component, but also a vertical component, less important given the degree of inclination of the oblique face, which is parallel to the sides 5 lateral.

Cette composante verticale orientée vers le haut matérialise les contraintes s'appliquant au revêtement externe 40 en vue de le maintenir dans la gorge périphérique 8. Ces figures montrent par ailleurs que le revêtement 40, qui épouse la totalité du fond 4 et des parois latérales 5 du conteneur 1, présente une épaisseur qui le rend apte à procurer une augmentation significative de la rigidité de l'emballage.This vertical component oriented upwards materializes the constraints applying to the external coating 40 with a view to maintaining it in the peripheral groove 8. These figures also show that the coating 40, which follows the whole of the bottom 4 and of the side walls 5 of the container 1 has a thickness which makes it suitable for providing a significant increase in the rigidity of the packaging.

Les figures 5 à 8 montrent une configuration d'emballage sans couvercle mais fermées par un film scellé sur le rebord 17 périphérique du conteneur 1, qui nécessite une surface de dimensions appropriées pour que le scellage de l'opercule sur le conteneur soit « efficace ». La gorge 8 est, dans cette configuration, réalisée entre une gouttière 18 discontinue qui parcourt la totalité de la périphérie du rebord 17 et les côtés latéraux 5 de la paroi périphérique du conteneur 1. Ce qui apparaît comme une gouttière discontinue en figure 5 s'avère en pratique créer des bornes délimitant la partie externe de la gorge 8, telles que visibles en figure 6, créant de facto une paroi externe 81 de gorge 8 discontinue.The figures 5 to 8 show a packaging configuration without a lid but closed by a film sealed on the peripheral rim 17 of the container 1, which requires a surface of suitable dimensions for the sealing of the lid on the container to be "effective". The groove 8 is, in this configuration, made between a discontinuous gutter 18 which runs along the entire periphery of the rim 17 and the lateral sides 5 of the peripheral wall of the container 1. This appears as a discontinuous gutter in figure 5 turns out in practice to create terminals delimiting the external part of the groove 8, such as visible in figure 6 , de facto creating an outer wall 81 with a discontinuous groove 8.

La gouttière 18 est notamment prévue discontinue pour augmenter la rigidité du rebord 17 et permettre une bonne qualité de scellage. Par ailleurs, la partie extérieure du rebord 17 orienté parallèlement au fond 4 est prolongée par une jupe périphérique 20 d'allure perpendiculaire audit fond 4.The gutter 18 is in particular provided discontinuous to increase the rigidity of the rim 17 and allow good sealing quality. Furthermore, the outer part of the rim 17 oriented parallel to the base 4 is extended by a peripheral skirt 20 of shape perpendicular to said base 4.

L'opercule de fermeture de l'emballage, non représenté, est fixé sur la totalité de la périphérie du conteneur 1, sur toute la zone de rebord 17 plane disponible. La solidarisation du revêtement périphérique 40 au conteneur 1 se fait exactement de la même manière que pour les emballages filmables ou à couvercle, la gorge 8 obéissant aux mêmes caractéristiques dimensionnelles que dans la version précédente d'emballage, au moins en largeur et profondeur, et courant également tout au long du pourtour de l'emballage, de manière cependant discontinue. Compte tenu des contraintes de fixation nécessaires à retenir le revêtement dans la gorge 8, ce mode de fixation est cependant tout à fait approprié, la répartition périphérique des efforts étant certes moins aboutie mais largement suffisante.The packaging closure cap, not shown, is fixed over the entire periphery of the container 1, over the entire flat rim area 17 available. The peripheral coating 40 is secured to the container 1 in exactly the same way as for filmable or lidded packaging, the groove 8 obeying the same dimensional characteristics as in the previous version of packaging, at least in width and depth, and also running all along the periphery of the packaging, however discontinuously. Taking into account the fixing constraints necessary to retain the coating in the groove 8, this method of fixing is however quite appropriate, the peripheral distribution of the forces being admittedly less complete but largely sufficient.

La configuration d'emballage des figures 9, 10 et 11 présente un couvercle 2 articulé apte à se refermer élastiquement sur le conteneur 1, à l'aide de profilés homologues qui viennent se clipser l'un dans l'autre. Le couvercle 2 et le conteneur 1 sont reliés par une charnière 3 d'un seul tenant avec ces deux volumes. Le profilé qui équipe le rebord périphérique 7 du conteneur 1 prend la forme d'une gouttière 18 d'une section sensiblement équivalente à celle de la variante précédente, mais continue.The packaging configuration of figures 9, 10 and 11 has a hinged cover 2 able to close elastically on the container 1, with the aid of corresponding profiles which snap into one another. The cover 2 and the container 1 are connected by a hinge 3 integrally with these two volumes. The profile which equips the peripheral rim 7 of the container 1 takes the shape of a gutter 18 of a section substantially equivalent to that of the previous variant, but continuous.

Le couvercle 2 bombé, de forme similaire à celle du conteneur 1, comporte un rebord homologue 20 doté d'un profilé 21 périphérique dont la forme est dimensionnellement très proche de celle de la gouttière 18, et qui est prévu pour s'y loger. Les dimensions respectives de la gouttière 18 et du profilé 21 permettent une liaison à engagement élastique ajusté de l'un dans l'autre, un clipsage aboutissant à ce que les rebords 7 et 20 soient au contact ou quasiment au contact l'un de l'autre. Dans cette configuration, le couvercle 2 bombé définit un volume additionnel pour l'emballage lorsqu'il est fermé.The domed cover 2, similar in shape to that of the container 1, comprises a corresponding rim 20 provided with a peripheral profile 21, the shape of which is dimensionally very close to that of the gutter 18, and which is intended to be housed therein. The respective dimensions of the gutter 18 and of the profile 21 allow a connection with adjusted elastic engagement of one in the other, a clipping resulting in that the edges 7 and 20 are in contact or almost in contact with one of the 'other. In this configuration, the domed cover 2 defines an additional volume for the packaging when it is closed.

Les figures 12 et 13 montrent, en section, la fixation mécanique du revêtement 40 au conteneur 1 dans la solution à couvercle des figures 9, 10 et 11. Elle obéit au même schéma de sertissage que les modalités de fixation des variantes précédentes, et se fait donc au niveau de la bordure supérieure des pans 41 à 44, laquelle est insérée entre la bande supérieure 51 des côtés latéraux 5 du conteneur 1 et la paroi 81 qui lui fait face et qui appartient en l'espèce à la gouttière 18, de manière uniforme sur tous les côtés 5.The figures 12 and 13 show, in section, the mechanical attachment of the liner 40 to the container 1 in the lid solution of the figures 9, 10 and 11 . It obeys the same crimping scheme as the fixing methods of the previous variants, and is therefore done at the level of the upper edge of the panels 41 to 44, which is inserted between the upper strip 51 of the lateral sides 5 of the container 1 and the wall. 81 which faces it and which in this case belongs to the gutter 18, uniformly on all sides 5.

La gouttière 18 (et le profilé 21) présente un tracé trapézoïdal, précisément pour qu'une de ses parois 81 soit orientée parallèlement à un côté 5 latéral en vue réaliser une gorge 8 de largeur uniforme dans la profondeur autant que sur l'ensemble de la périphérie, largeur qui est prévue pour assurer la fixation du revêtement de manière uniformément répartie sur le pourtour du récipient. Cette même forme trapézoïdale permet concomitamment d'assurer une fermeture par couvercle de bien meilleure tenue mécanique.The gutter 18 (and the profile 21) has a trapezoidal outline, precisely so that one of its walls 81 is oriented parallel to a lateral side 5 in order to achieve a groove 8 of uniform width in depth as well as over the whole of the periphery, a width which is provided to ensure the fixing of the coating in a manner uniformly distributed over the periphery of the container. This same trapezoidal shape concomitantly makes it possible to ensure a closure by means of a cover with much better mechanical strength.

La configuration des figures 14 à 16 reprend celle de la figure 1, avec l'adjonction de reliefs dépassant des parois 51, 81 de la gorge 8 vers l'intérieur en vue de renforcer la solidarisation du revêtement 40 au conteneur 1. Plus précisément, des plots 30 en regard (voir en figure 16) dépassant respectivement des parois 81, 51 s'insèrent dans des orifices 52 de même forme pratiqués dans la bordure supérieure du revêtement 40 cartonné, aboutissant à retenir ledit revêtement dans la gorge 8. Ces moyens de rétentions supplémentaires s'ajoutent à l'effet de contre-dépouille mentionné auparavant. En variante (voir figure 17), les plots 30 peuvent être remplacés par des cupules 31 en forme de portions de sphères qui exercent une contrainte dans des évidements de forme correspondante emboutis ou matricés aux emplacements correspondants dans la bordure supérieure du revêtement 40.The configuration of figures 14 to 16 resumes that of the figure 1 , with the addition of reliefs projecting from the walls 51, 81 of the groove 8 inwardly in order to strengthen the attachment of the coating 40 to the container 1. More precisely, the studs 30 opposite (see below). figure 16 ) respectively protruding from the walls 81, 51 are inserted into orifices 52 of the same shape made in the upper edge of the cardboard covering 40, resulting in said covering being retained in the groove 8. These additional retention means add to the effect previously mentioned undercut. As a variant (see figure 17 ), the studs 30 can be replaced by cups 31 in the form of portions of spheres which exert a stress in recesses of corresponding shape stamped or stamped at the corresponding locations in the upper edge of the coating 40.

La variante de la figure 18 comporte des reliefs 32 pratiqués dans les angles du conteneur, qui retiennent les pans 41 à 44 au moyen de fentes pratiquées dans les portions supérieures de leurs chants latéraux (non représentées).The variant of figure 18 comprises reliefs 32 made in the corners of the container, which retain the sides 41 to 44 by means of slots made in the upper portions of their side edges (not shown).

La variante des figures 19 à 21, qui est également proche de la configuration des figures 1 à 3, comporte une gorge 8 crénelée surplombant le rebord 7 : ladite gorge 8 n'est donc pas continue mais interrompue par des créneaux 33 régulièrement espacés. Ainsi, dans la section transversale de la figure 20, la partie supérieure gauche montre le pan 41 du revêtement inséré dans la gorge 8 alors que dans la partie supérieure droite, la section est au niveau d'un créneau et le pan 43 ne comporte donc pas de partie insérée dans une gorge à cet endroit. Compte tenu des contraintes de fixation nécessaires à retenir le revêtement 40 dans la gorge 8, ce mode de fixation est cependant tout à fait approprié, la répartition périphérique des efforts étant largement suffisante notamment du fait de la forme trapézoïdale des créneaux, qui créent un effet supplémentaire de contre-dépouille.The variant of figures 19 to 21 , which is also close to the configuration of figures 1 to 3 , has a crenellated groove 8 overhanging the rim 7: said groove 8 is therefore not continuous but interrupted by regularly spaced crenellations 33. Thus, in the cross section of the figure 20 , the upper left part shows the panel 41 of the coating inserted in the groove 8 while in the upper right part, the section is at the level of a notch and the panel 43 therefore does not have a part inserted in a groove at this location . Taking into account the fixing constraints necessary to retain the coating 40 in the groove 8, this method of fixing is however quite appropriate, the peripheral distribution of the forces being largely sufficient in particular because of the trapezoidal shape of the crenellations, which create an effect. additional undercut.

Les exemples apparaissant sur les figures ne sont cependant pas exhaustifs de l'invention, qui englobe également des variantes de forme notamment mais non exclusivement pour la gouttière et ses sections possibles, pour la forme et le volume géométrique du conteneur et de son couvercle, le cas échéant, la forme et le nombre des reliefs dans les gorges, les découpes dans le revêtement etc..The examples appearing in the figures are not, however, exhaustive of the invention, which also encompasses variations in shape, in particular but not exclusively for the gutter and its possible sections, for the shape and geometric volume of the container and of its cover, the where applicable, the shape and number of reliefs in the grooves, the cutouts in the coating, etc.

Claims (17)

Emballage notamment apte à contenir des aliments comportant d'une part un conteneur (1) en matériau de type plastique doté d'un fond (4) et d'une paroi périphérique (5) continue, le bord supérieur (6) de la paroi périphérique (5) opposé au fond (4) délimitant une ouverture et étant muni d'un rebord périphérique (7) s'étendant radialement vers l'extérieur, et d'autre part un revêtement extérieur (40) dont la découpe est réalisée dans un flan plan en matériau recyclable de type carton et disposé au contact de la face extérieure de la paroi périphérique (5), des moyens de liaison détachable du revêtement (40) au conteneur (1) étant prévus, caractérisé en ce que lesdits moyens de liaison consistent en une gorge périphérique (8) parcourant la face externe de la paroi périphérique (5) du conteneur (1), s'ouvrant en direction du fond (4) du conteneur (1) et étant délimitée par deux parois (51, 81) d'allure parallèle respectivement constituées par une bande supérieure (51) de la paroi périphérique (5) du conteneur (1) jouxtant le bord supérieur (6) et par une paroi extérieure (81) du rebord périphérique (7) en regard de ladite bande (51), ladite gorge (8) délimitant un espace de logement ajusté pour une bordure supérieure du revêtement (40) de forme adaptée à la forme de la gorge (8).Packaging particularly suitable for containing food comprising on the one hand a container (1) made of plastic-type material provided with a bottom (4) and a continuous peripheral wall (5), the upper edge (6) of the wall peripheral (5) opposite the bottom (4) delimiting an opening and being provided with a peripheral rim (7) extending radially outwards, and on the other hand an outer covering (40) the cut of which is made in a flat blank of recyclable cardboard-type material and placed in contact with the outer face of the peripheral wall (5), means for releasably connecting the coating (40) to the container (1) being provided, characterized in that said means of connection consist of a peripheral groove (8) running through the outer face of the peripheral wall (5) of the container (1), opening towards the bottom (4) of the container (1) and being delimited by two walls (51, 81) of parallel appearance respectively formed by an upper strip (51) of the peripheral wall ic (5) of the container (1) adjoining the upper edge (6) and by an outer wall (81) of the peripheral rim (7) facing said strip (51), said groove (8) delimiting an adjusted housing space for an upper edge of the coating (40) of shape adapted to the shape of the groove (8). Emballage apte à contenir des aliments selon la revendication 1, caractérisé en ce que au moins la bande supérieure (51) de la paroi périphérique (5) du conteneur (1) et la paroi extérieure (81) en regard de ladite bande (51) sont inclinées d'un angle compris entre 5° et 45° par rapport à la verticale.Packaging suitable for containing food according to claim 1, characterized in that at least the upper strip (51) of the peripheral wall (5) of the container (1) and the outer wall (81) facing said strip (51) are inclined at an angle of between 5 ° and 45 ° with respect to the vertical. Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisé en ce que la largeur de la gorge périphérique (8) est égale à l'épaisseur du flan du revêtement extérieur (40).Packaging suitable for containing food according to one of the preceding claims, characterized in that the width of the peripheral groove (8) is equal to the thickness of the blank of the outer covering (40). Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisée en ce que la gorge (8) est axialement discontinue.Packaging suitable for containing food according to one of the preceding claims, characterized in that the groove (8) is axially discontinuous. Emballage apte à contenir des aliments selon la revendication précédente, caractérisé en ce que la gorge (8) comporte une succession de créneaux (33).Packaging suitable for containing food according to the preceding claim, characterized in that the groove (8) comprises a succession of slots (33). Emballage apte à contenir des aliments selon la revendication précédente, caractérisé en ce que les créneaux (33) sont de forme trapézoïdale, le plus petit des côtés parallèles des trapèzes étant dans l'alignement du fond de la gorge (8) crénelée.Packaging suitable for containing food according to the preceding claim, characterized in that the crenellations (33) are trapezoidal in shape, the smallest of the parallel sides of the trapezoids being in alignment with the bottom of the crenellated groove (8). Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisé en ce que l'une au moins des parois (51, 81) formant la gorge (8) comporte des reliefs (30, 31) dépassant vers l'intérieur de la gorge (8).Packaging suitable for containing food according to one of the preceding claims, characterized in that at least one of the walls (51, 81) forming the groove (8) comprises reliefs (30, 31) projecting towards the inside of the throat (8). Emballage apte à contenir des aliments selon la revendication précédente, caractérisé en ce que les reliefs (30, 31) s'insèrent dans des orifices (52) ou fentes de formes correspondantes pratiqués dans la bordure supérieure du revêtement (40).Packaging suitable for containing food according to the preceding claim, characterized in that the reliefs (30, 31) fit into openings (52) or slots of corresponding shapes made in the upper edge of the coating (40). Emballage apte à contenir des aliments selon la revendication 7, caractérisé en ce que les reliefs (31) se logent dans des embossages de formes correspondantes pratiqués dans la bordure supérieure du revêtement (40).Packaging suitable for containing food according to Claim 7, characterized in that the reliefs (31) are housed in embossings of corresponding shapes made in the upper edge of the coating (40). Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisé en ce que la découpe du flan du revêtement extérieur (40) comporte au moins une portion de forme et de surface égales à la forme et à la surface de la paroi périphérique (5) du conteneur (1).Packaging suitable for containing food according to one of the preceding claims, characterized in that the cutout of the blank of the outer covering (40) comprises at least one portion of shape and area equal to the shape and area of the peripheral wall (5) of the container (1). Emballage apte à contenir des aliments selon la revendication précédente, caractérisé en ce que la découpe du flan comporte une portion (45) de forme et de surface égales à la forme et à la surface du fond (4) du conteneur (1).Packaging suitable for containing food according to the preceding claim, characterized in that the blank cutout comprises a portion (45) of shape and area equal to the shape and area of the bottom (4) of the container (1). Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisé en ce que le conteneur (1) comporte un fond polygonal (4) et des côtés latéraux formant la paroi périphérique (5), et en ce que le revêtement (40) comporte un fond (45) de même surface polygonale que le fond (4) du conteneur (1), séparé par des rainages (46 à 49) de pans latéraux (41 à 44) de surfaces correspondant aux surfaces des côtés latéraux du conteneur (1) incluant la paroi (51) de la gorge (8).Packaging suitable for containing food according to one of the preceding claims, characterized in that the container (1) comprises a polygonal bottom (4) and lateral sides forming the peripheral wall (5), and in that the coating (40 ) comprises a bottom (45) of the same polygonal surface as the bottom (4) of the container (1), separated by grooves (46 to 49) of side panels (41 to 44) of surfaces corresponding to the surfaces of the lateral sides of the container (1) including the wall (51) of the groove (8). Emballage apte à contenir des aliments selon la revendication précédente, caractérisé en ce qu'au moins un relief (32) équipe chaque angle de la gorge (8), les pans latéraux (41, 42, 43, 44) du revêtement (40) étant munis de fentes épousant la portion de ces reliefs (32) présente dans la section de gorge (8) de leur côté latéral (5) d'insertion.Packaging suitable for containing food according to the preceding claim, characterized in that at least one relief (32) equips each corner of the groove (8), the side panels (41, 42, 43, 44) of the coating (40) being provided with slots matching the portion of these reliefs (32) present in the groove section (8) of their lateral insertion side (5). Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisé en ce que la paroi (81) extérieure de la gorge appartient à une gouttière (18) pratiquée dans le rebord périphérique (7), de section transversale trapézoïdale et présentant une paroi oblique (81) de même inclinaison que la bande (51) de paroi périphérique (5) du conteneur (1) auquel elle fait face.Packaging suitable for containing food according to one of the preceding claims, characterized in that the outer wall (81) of the groove belongs to a gutter (18) formed in the peripheral rim (7), of trapezoidal cross section and having an oblique wall (81) having the same inclination as the strip (51) of the peripheral wall (5) of the container (1) which it faces. Emballage apte à contenir des aliments selon la revendication précédente, caractérisée en ce que la gouttière (18) est axialement discontinue.Packaging suitable for containing food according to the preceding claim, characterized in that the gutter (18) is axially discontinuous. Emballage apte à contenir des aliments selon l'une des revendications précédentes, caractérisée en ce que le revêtement (40) présente des découpes.Packaging suitable for containing food according to one of the preceding claims, characterized in that the coating (40) has cutouts. Emballage apte à contenir des aliments selon la revendication précédente, caractérisée en ce que la paroi périphérique (5) du conteneur (1) présente des reliefs localisés aux niveaux des découpes du revêtement (40), et dimensionnés pour s'y insérer.Packaging suitable for containing food according to the preceding claim, characterized in that the peripheral wall (5) of the container (1) has reliefs located at the level of the cutouts of the coating (40), and dimensioned to fit therein.
EP21182387.7A 2020-06-30 2021-06-29 Plastic packaging with framework made from cardboard or another bio-sourced material without gluing Active EP3932822B1 (en)

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FR2006893A FR3111874B1 (en) 2020-06-30 2020-06-30 Plastic packaging with a cardboard frame or other bio-sourced material without gluing.

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1264811A (en) * 1968-06-14 1972-02-23
GB2194514A (en) * 1986-08-30 1988-03-09 Waddingtons Cartons Ltd Composite packages
US4801017A (en) * 1986-10-17 1989-01-31 Aldo Artusi Container, particularly for receiving foods
WO1993023297A1 (en) 1992-05-11 1993-11-25 Ab Åkerlund & Rausing Packaging container and method of producing the same
EP0577634A1 (en) * 1991-03-26 1994-01-12 Akerlund & Rausing Ab Packaging container and a method for the production of the same.
FR2979329A1 (en) 2011-08-26 2013-03-01 Cgl Pack Service Tray for containing food, has reinforcement structure including sidewall reinforcement, where container is detachably secured to reinforcement structure by deformations bearing in contact face against outer face of sidewall reinforcement
WO2015187016A1 (en) 2014-06-05 2015-12-10 N.V. Nutricia Method of manufacturing and filling a package and corresponding package

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1264811A (en) * 1968-06-14 1972-02-23
GB2194514A (en) * 1986-08-30 1988-03-09 Waddingtons Cartons Ltd Composite packages
US4801017A (en) * 1986-10-17 1989-01-31 Aldo Artusi Container, particularly for receiving foods
EP0577634A1 (en) * 1991-03-26 1994-01-12 Akerlund & Rausing Ab Packaging container and a method for the production of the same.
WO1993023297A1 (en) 1992-05-11 1993-11-25 Ab Åkerlund & Rausing Packaging container and method of producing the same
FR2979329A1 (en) 2011-08-26 2013-03-01 Cgl Pack Service Tray for containing food, has reinforcement structure including sidewall reinforcement, where container is detachably secured to reinforcement structure by deformations bearing in contact face against outer face of sidewall reinforcement
WO2015187016A1 (en) 2014-06-05 2015-12-10 N.V. Nutricia Method of manufacturing and filling a package and corresponding package

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EP3932822B1 (en) 2024-06-05
FR3111874A1 (en) 2021-12-31

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