EP0625113A1 - Liquid-tight packaging tray and its manufacturing method - Google Patents

Liquid-tight packaging tray and its manufacturing method

Info

Publication number
EP0625113A1
EP0625113A1 EP93905383A EP93905383A EP0625113A1 EP 0625113 A1 EP0625113 A1 EP 0625113A1 EP 93905383 A EP93905383 A EP 93905383A EP 93905383 A EP93905383 A EP 93905383A EP 0625113 A1 EP0625113 A1 EP 0625113A1
Authority
EP
European Patent Office
Prior art keywords
bellows
lateral
parts
lateral sides
volume
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
EP93905383A
Other languages
German (de)
French (fr)
Other versions
EP0625113B1 (en
Inventor
Jean Posson
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.)
Jp Developpement
Original Assignee
Jp Developpement Posson Jean
POSSON Jean
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jp Developpement Posson Jean, POSSON Jean filed Critical Jp Developpement Posson Jean
Publication of EP0625113A1 publication Critical patent/EP0625113A1/en
Application granted granted Critical
Publication of EP0625113B1 publication Critical patent/EP0625113B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/24—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds
    • B65D5/241—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with adjacent sides interconnected by gusset folds and the gussets folds connected to the inside of the container body

Definitions

  • the present invention relates to the field of packaging; it relates more particularly to a sealed cardboard tray obtained by the volume of a suitable blank and the method of volume of this blank.
  • Certain food products and in particular meat of the poultry, steak, liver or other type, are usually packaged in containers in the form of trays associated with a protective plastic film.
  • These trays are generally made of polystyrene-type material; their manufacturing cost is relatively low but they have the disadvantage of being neither biodegradable nor recyclable.
  • cardboard trays which consist of a generally rectangular bottom, bordered by four side walls. Sealing at the corners is ensured by bellows folded against one of the side walls and held in position by gluing.
  • bellows are made in two parts of generally triangular shape. To maintain the volume, one of these parts is glued to the front and the other to the back, depending on their positioning inside or outside the tray.
  • a liquid-tight cardboard container is described in document US-A-1 959 613. Its corners are equipped with two-part bellows, one of which has an opening or cut-out to allow direct contact between the other part of the bellows. and the receiving side.
  • REPLACEMENT SHEET Particularly in the possibility of gluing only one side of the cardboard blank to maintain the volume of the package.
  • the bellows are folded down on the outside to avoid the presence of internal folds and not to present, in the internal volume, a cut blank edge which would absorb liquids. Given the anti-leak destination of this container, for packaging liquids for example, it is therefore essential to position the bellows on the outside.
  • this structure promotes the passage of liquids between the two bellows parts.
  • the liquid has the possibility of rising by capillary action and it quickly enters the thickness of the cardboard through the upper edge, causing a splitting of the constituent material, a collapse of the packaging and the flow of the contents.
  • the presence of the exterior bellows makes this type of packaging unattractive.
  • document US-A-4 304 352 provides, for a similar structure, recto bonding. - back.
  • the upper cutout of one of the bellows parts ensures the bonding of the other bellows part on the receiving side to improve resistance to level of angles; it also facilitates volume setting in the corners, in connection with the presence of a receiving edge with a sealed cover.
  • this container Given its destination, this container requires to apply the corner bellows to the outside, this for the reasons explained above in conjunction with document US-A-1 959 613.
  • Such a structure is not very aesthetic and it limits the possibilities of application of an exterior marking.
  • the cardboard tray object of the present invention is intended for the packaging of food products of the chicken thigh, steak or other type ... capable of exuding small volumes of liquids.
  • this tray is to contain these small volumes of liquids and it therefore has sealing properties, in particular at the corners of the bottom, adapted to avoid the rise of liquids by capillarity; it is also obtained in a very simple manner and capable of being set in volume, by automatic means, at very high rates.
  • the sealed container according to the invention is produced from a cardboard blank comprising a bottom bordered by lateral sides connected in pairs at the corners by bellows in two parts. These bellows are pressed against one of the lateral sides, inside the tray.
  • the first bellows part, adjoining the lateral receiving side of said bellows, has a cut in its upper part; This cut-out ensures, during the volume setting, direct contact between the second bellows part and the lateral side of reception.
  • the volume of the tray is maintained by gluing the internal surfaces of the lateral sides which receive the bellows.
  • This gluing is suitable for securing one of the faces of the first bellows part, in the lower zone of the corresponding side, and the other face of the second part, in the upper zone of this side, while avoiding or stopping the possibilities of liquid ascent by capillary action.
  • This tray structure requires gluing in suitable areas on one side of the cardboard blank, which allows the use of relatively simple automatic assembly lines.
  • the bonding of the folded bellows inside the tray achieves an effective joining at the angles which prevents the liquids from going up by capillary action to the edges of the cardboard blank, at the level of the upper cut made in one of the bellows parts, or at the level of the upper edge of the tray.
  • the gluing is carried out by two points of glue; the first on the transition line between the two bellows parts pressed on their lateral receiving side, and the second in the upper part, to ensure the joining of the bellows part without cutting.
  • the first point of glue blocks or stops possible upwelling of liquid by capillarity and prevents them from reaching the edges of the tray.
  • the tray structure according to the present application with bellows folded inside also gives the finished product an integrity external appearance allowing the printing of advertising messages on a surface without roughness.
  • FIG. 1 shows a possible embodiment of the cardboard blank allowing the realization of the sealed container according to the invention
  • FIGS. 2, 3 and 4 are perspective views of an angle of the tray, during assembly
  • Figure 5 is a perspective view of the tray according to the invention, set in volume.
  • Figure 1 is a flat view of a cardboard blank capable of being placed in volume to obtain a sealed container.
  • This blank 1 consists of a rectangular bottom 2 bordered by two large lateral sides 3, 4 and by two small lateral end sides 5 and 6, having substantially identical heights. Sides 3, 4, 5 and
  • the four bellows 7 are identical and each consists of two parts 8 and 9, of generally triangular shape, separated by a line of central fold 10.
  • the first part 8 of the bellows 7 is attached at the small lateral side corresponding to 5, 6. It extends from the bottom 2 over a height less than that of the adjacent lateral side 5, 6, so as to form an opening or cutout 11 in its upper part.
  • the upper edge 12 of the triangle 8 extends substantially perpendicular to the edge of the adjacent side, from halfway up this side. To maintain a satisfactory seal in the bottom of the tray 0 and to allow automatic mounting, care should be taken to keep this part 8 of bellows over a minimum height of approximately 1 cm.
  • the second part 9 of the bellows 7 is adjacent to the large side 3, • 4 corresponding; She's spreading
  • the volume of the tray is produced automatically by appropriate mechanical means.
  • This setting in volume is carried out by folding the two parts 8 and 9 of the bellows 7 against the internal faces, either of the short lateral sides 5, 6, or of the long sides 3, 4, as the case may be. This choice is conditioned by the dimensions of the tray and according to the techniques used if it is covered with a stretchable plastic film. In the present case, the bellows 7 are folded over the internal faces of the short sides 5 and
  • the bellows arranged inside the tray ensure a quality aesthetic and they do not interfere stacking of the products in each other, subject to providing a taper (to be determined according to the desired end result). On the other hand, they allow an external marking (advertising, decoration, information %) on a smooth surface, without roughness.
  • the first stage of assembly consists in gluing the lateral zones of the internal face of the short sides 5 and 6, on which the two parts 8 and 9 of the bellows will be pressed. This gluing can be carried out on the entire hatched surface 14, or be defined by glue dots, arranged judiciously, as described below.
  • the next step is to raise the lateral sides 3, 4, 5 and 6 by pressing the two parts 8 and 9 of the bellows 7 against the lateral side 5, 6.
  • the front of the first part. 8 of bellows is pressed against the lower gluing area; in addition and thanks to the presence of the cutout 11, the back of the second part 9 of bellows is pressed against the upper gluing area.
  • the gluing is obtained by means of two glue points 15 and 16, aligned vertically on the gluing zone 14.
  • the glue point 15 is arranged at the upper edge 12 of the first part 8 bellows; it blocks the transition line between this first part 8 and the second part 9 of bellows. In addition, it prevents the rise of humidity by capillarity.
  • the second point of glue 16 is disposed in the upper part; it secures the internal face of the short side 5, 6 with the second part 9 of bellows. Depending on the height of the tray, additional dots of glue can be added. Also note that the gluing can be done by stamp in order to obtain a larger bonding surface.
  • the sizing is carried out on only one side of the blank, the volume setting of the tray, which follows this sizing operation, is carried out in a very simple and very rapid manner; assembly can be carried out at very high rates.
  • the particular mounting process allows correct blocking at the corners and good sealing of the bellows in the bottom of the tray.
  • the shape of the tray in the form of a pyramid trunk, facilitates stacking of packaging, empty.
  • this shape it is entirely possible to envisage varying this shape, while retaining the same structure and the same mounting principle.
  • the lateral sides of the tray can be perpendicular to the bottom to obtain a parallelepiped packaging.
  • the bottom 2 can have any polygonal shape.
  • cutout 11 produced in the upper zone of one of the parts of the bellows can be produced by any suitable means and be in any form.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Processing Of Solid Wastes (AREA)
  • Packages (AREA)
  • Making Paper Articles (AREA)
  • Diaphragms And Bellows (AREA)

Abstract

La barquette étanche comporte un fond (2) bordé de côtés latéraux (3, 4, 5, 6) reliés deux à deux au moyen de soufflets (7) rabattus à l'intérieur. Ces soufflets sont constitués de deux parties (8, 9) qui sont destinées à venir se plaquer sur l'un desdits côtés latéraux (3, 4, 5, 6). La première partie (8) de soufflet, attenante au côté latéral (5, 6) de réception dudit soufflet, comporte une découpe (11) dans sa partie supérieure; cette découpe (11) assure, lors de la mise en volume, un contact direct entre la deuxième partie (9) de soufflet et ledit côté latéral de réception (5, 6). Un simple encollage des faces internes latérales des côtés (3, 4, 5, 6), destinées à recevoir les soufflets (7), permet de solidariser le recto de l'une des parties (8) et le verso de l'autre partie (9) pour maintenir le volume de l'angle étanche. Cette solidarisation, par encollage d'un seul côté du flan, évite les remontées de liquide par capillarité et confère un aspect extérieur attrayant à la barquette.The sealed container has a bottom (2) bordered by lateral sides (3, 4, 5, 6) connected two by two by means of bellows (7) folded inside. These bellows consist of two parts (8, 9) which are intended to be pressed against one of said lateral sides (3, 4, 5, 6). The first bellows part (8), adjoining the lateral side (5, 6) for receiving said bellows, has a cutout (11) in its upper part; this cutout (11) ensures, during volume setting, direct contact between the second part (9) of the bellows and said lateral receiving side (5, 6). A simple gluing of the lateral internal faces of the sides (3, 4, 5, 6), intended to receive the bellows (7), makes it possible to secure the front of one of the parts (8) and the back of the other part (9) to maintain the volume of the sealed corner. This attachment, by gluing on only one side of the blank, avoids liquid rising by capillarity and gives the tray an attractive external appearance.

Description

Barquette étanche et son procédé de mise en volume.Watertight container and its volume-setting process.
La présente invention a trait au domaine de l'emballage ; elle concerne plus particulièrement une barquette étanche en carton obtenue par la mise en volume d'un flan adapté et le procédé de mise en volume de ce flan.The present invention relates to the field of packaging; it relates more particularly to a sealed cardboard tray obtained by the volume of a suitable blank and the method of volume of this blank.
Certains produits alimentaires, et en particulier les viandes du type volaille, steak, foie ou autre ... sont habituellement conditionnés dans des emballages en forme de barquettes associées à un film plastique de protection .Certain food products, and in particular meat of the poultry, steak, liver or other type, are usually packaged in containers in the form of trays associated with a protective plastic film.
Ces barquettes sont généralement réalisées en matériau du genre polystyrène ; leur coût de fabrication est relativement modique mais elles présentent l'inconvénient de n'être ni biodégradables ni recyclables.These trays are generally made of polystyrene-type material; their manufacturing cost is relatively low but they have the disadvantage of being neither biodegradable nor recyclable.
Pour pallier à ces inconvénients on a proposé des barquettes en carton constituées d'un fond généralement rectangulaire, bordé par quatre parois latérales. L'étanchéité au niveau des angles est assurée par des soufflets rabattus contre l'une des parois latérales et maintenus en position par collage.To overcome these drawbacks, cardboard trays have been proposed which consist of a generally rectangular bottom, bordered by four side walls. Sealing at the corners is ensured by bellows folded against one of the side walls and held in position by gluing.
Ces soufflets sont réalisés en deux parties de forme générale triangulaire. Pour assurer le maintien du volume, l'une de ces parties est encollée au recto et l'autre au verso, en fonction de leur positionnement à l'intérieur ou à l'extérieur de la barquette.These bellows are made in two parts of generally triangular shape. To maintain the volume, one of these parts is glued to the front and the other to the back, depending on their positioning inside or outside the tray.
Ce double encollage complique le processus de montage automatique des barquettes. Cette complexité nécessite l'utilisation de machines de montage onéreuses et limite les cadences de mise en volume.This double sizing complicates the automatic assembly process of the trays. This complexity requires the use of expensive assembly machines and limits the rates of volume setting.
Un conteneur en carton étanche aux liquides est décrit dans le document US-A-1 959 613. Ses angles sont équipés de soufflets en deux parties dont l'une comporte une ouverture ou découpe pour permettre un contact direct entre l'autre partie du soufflet et le côté latéral de réception. CetteA liquid-tight cardboard container is described in document US-A-1 959 613. Its corners are equipped with two-part bellows, one of which has an opening or cut-out to allow direct contact between the other part of the bellows. and the receiving side. This
FEUILLE DE REMPLACEMENT particulari é dans la possibilité d'encoller un côté uniquement du flan de carton pour le maintien du volume de 1 ' emballage .REPLACEMENT SHEET Particularly in the possibility of gluing only one side of the cardboard blank to maintain the volume of the package.
Dans ce conteneur, les soufflets sont rabattus sur l'extérieur pour éviter la présence de plis internes et pour ne pas présenter, dans le volume interne, un rebord de flan découpé qui absorberait les liquides. Etant donné la destination anti-fuite de ce conteneur, pour le conditionnement de liquides par exemple, il est donc indispensable de positionner les soufflets sur l'extérieur.In this container, the bellows are folded down on the outside to avoid the presence of internal folds and not to present, in the internal volume, a cut blank edge which would absorb liquids. Given the anti-leak destination of this container, for packaging liquids for example, it is therefore essential to position the bellows on the outside.
Cependant, en liaison avec le procédé de montage de l'emballage et notamment l'encollage d'une seule face du flan, cette structure favorise le passage de liquides entre les deux parties de soufflet. Le liquide a la possibilité de remonter par capillarité et il rentre rapidement dans l'épaisseur du carton par la tranche supérieure, provoquant un dédoublement du matériau constitutif, un affaissement de l'emballage et l'écoulement du contenu. D'autre part, la présence des soufflets extérieurs rend ce type d'emballage peu attrayant.However, in connection with the packaging mounting method and in particular the gluing of one side of the blank, this structure promotes the passage of liquids between the two bellows parts. The liquid has the possibility of rising by capillary action and it quickly enters the thickness of the cardboard through the upper edge, causing a splitting of the constituent material, a collapse of the packaging and the flow of the contents. On the other hand, the presence of the exterior bellows makes this type of packaging unattractive.
Pour pallier aux inconvénients du conteneur précité, et en particulier pour éviter le passage des liquides entre les deux parties de soufflet et les remontées dudit liquide par capillarité, le document US-A-4 304 352 prévoit, pour une structure similaire, un collage recto- verso .To overcome the drawbacks of the aforementioned container, and in particular to avoid the passage of liquids between the two bellows parts and the rising of said liquid by capillary action, document US-A-4 304 352 provides, for a similar structure, recto bonding. - back.
Dans ce conteneur anti-fuite qui est destiné au conditionnement de produits liquides ou semi-liquides, la découpe supérieure de l'une des parties de soufflet assure le collage de l'autre partie de soufflet sur le côté de réception pour améliorer la résistance au niveau des angles ; elle permet également de faciliter la mise en volume dans les angles, en liaison avec la présence d'une bordure de réception d'un couvercle scellé.In this anti-leak container which is intended for the packaging of liquid or semi-liquid products, the upper cutout of one of the bellows parts ensures the bonding of the other bellows part on the receiving side to improve resistance to level of angles; it also facilitates volume setting in the corners, in connection with the presence of a receiving edge with a sealed cover.
Etant donné sa destination, ce conteneur impose d'appliquer les soufflets d'angle sur l'extérieur, ceci pour les raisons exposées ci-avant en liaison avec le document US-A-1 959 613. Une telle structure n'est pas très esthétique et elle limite les possibilités d'application d'un marquage extérieur.Given its destination, this container requires to apply the corner bellows to the outside, this for the reasons explained above in conjunction with document US-A-1 959 613. Such a structure is not very aesthetic and it limits the possibilities of application of an exterior marking.
D'autre part, le collage recto-verso des soufflets complique singulièrement l'installation de mise en volume.On the other hand, the double-sided bonding of the bellows singularly complicates the installation of volume.
Les conteneurs anti-fuites qui sont décrits dans ces deux documents US-A-1 959 613 et US-A-4 304 352 ont des destinations bien particulières qui ne sont pas celles de l'objet de la présente invention ; ils sont en effet adaptés au conditionnement de produits liquides et ils doivent être associés à un système d'occultation en forme de couvercle pour la rétention du produit conditionné.The leak-proof containers which are described in these two documents US-A-1,959,613 and US-A-4,304,352 have very specific destinations which are not those of the object of the present invention; they are in fact suitable for the packaging of liquid products and they must be associated with a concealment system in the form of a cover for the retention of the packaged product.
La barquette en carton objet de la présente invention est destinée au conditonnement de produits alimentaires du genre cuisses de poulet, steak ou autres ... susceptibles d'exsuder de petits volumes de liquides.The cardboard tray object of the present invention is intended for the packaging of food products of the chicken thigh, steak or other type ... capable of exuding small volumes of liquids.
Cette barquette a pour but de contenir ces petits volumes de liquides et elle comporte donc des propriétés d'étanchéité , au niveau des coins du fond notamment, adaptées pour éviter les remontées de liquides par capillarité ; elle est en outre obtenue de façon très simple et susceptible d'être mise en volume, par des moyens automatiques, à des cadences très élevées.The purpose of this tray is to contain these small volumes of liquids and it therefore has sealing properties, in particular at the corners of the bottom, adapted to avoid the rise of liquids by capillarity; it is also obtained in a very simple manner and capable of being set in volume, by automatic means, at very high rates.
La barquette étanche selon l'invention est réalisée à partir d'un flan de carton comportant un fond bordé de côtés latéraux reliés deux à deux dans les angles par des soufflets en deux parties. Ces soufflets viennent se plaquer sur l'un des côtés latéraux, à l'intérieur de la barquette. La première partie de soufflet, attenante au côté latéral de réception dudit soufflet, comporte une découpe dans sa partie supérieure ; Cette découpe assure, lors de la mise en volume, un contact direct entre la deuxième partie de soufflet et le côté latéral de r é c e p t i o n .The sealed container according to the invention is produced from a cardboard blank comprising a bottom bordered by lateral sides connected in pairs at the corners by bellows in two parts. These bellows are pressed against one of the lateral sides, inside the tray. The first bellows part, adjoining the lateral receiving side of said bellows, has a cut in its upper part; This cut-out ensures, during the volume setting, direct contact between the second bellows part and the lateral side of reception.
Le maintien du volume de la barquette est assuré par encollage des surfaces internes des côtés latéraux qui reçoivent les soufflets. Cet encollage est adapté pour solidariser l'une des faces de la première partie de soufflet, dans la zone inférieure du côté correspondant, et l'autre face de la deuxième partie, dans la zone supérieure de ce côté, tout en évitant ou stoppant les possibilités de remontée de liquide par capillarité. Cette structure de barquette nécessite un encollage en des zones adaptées d'un seul côté du flan de carton, ce qui permet l'utilisation de lignes de montage automatiques relativement simples.The volume of the tray is maintained by gluing the internal surfaces of the lateral sides which receive the bellows. This gluing is suitable for securing one of the faces of the first bellows part, in the lower zone of the corresponding side, and the other face of the second part, in the upper zone of this side, while avoiding or stopping the possibilities of liquid ascent by capillary action. This tray structure requires gluing in suitable areas on one side of the cardboard blank, which allows the use of relatively simple automatic assembly lines.
D'autre part, le collage des soufflets rabattus à l'intérieur de la barquette réalise une solidarisation efficace au niveau des angles qui empêche les liquides de remonter par capillarité jusqu'aux tranches du flan de carton, au niveau de la découpe supérieure réalisée dans l'une des parties de soufflet, ou au niveau de la bordure supérieure de la barquette.On the other hand, the bonding of the folded bellows inside the tray achieves an effective joining at the angles which prevents the liquids from going up by capillary action to the edges of the cardboard blank, at the level of the upper cut made in one of the bellows parts, or at the level of the upper edge of the tray.
En effet, il est possible d'encoller entièrement la surface du côté latéral qui reçoit le soufflet. Dans ce cas toute la surface de la partie de soufflet qui comporte la découpe supérieure est solidarisée sur le côté latéral correspondant et le petit volume de liquide susceptible de stagner dans le fond de la barquette ne trouve aucune juxtaposition de parois susceptible de permettre sa remontée par capillarité.Indeed, it is possible to fully glue the surface of the lateral side which receives the bellows. In this case, the entire surface of the bellows part which comprises the upper cutout is secured on the corresponding lateral side and the small volume of liquid liable to stagnate in the bottom of the tray finds no juxtaposition of walls capable of allowing it to rise by capillarity.
Selon une autre possibilité, l'encollage est réalisé par deux points de colle ; le premier sur la ligne de transition entre les deux parties de soufflet plaquées sur leur côté latéral de réception, et le second dans la partie supérieure, pour assurer la solidarisation de la partie de soufflet sans découpe. Pour ce mode de réalisation particulier, le premier point de colle bloque ou stoppe les remontées possibles de liquide par capillarité et évite à ces dernières d'atteindre les tranches de la barquette.According to another possibility, the gluing is carried out by two points of glue; the first on the transition line between the two bellows parts pressed on their lateral receiving side, and the second in the upper part, to ensure the joining of the bellows part without cutting. For this particular embodiment, the first point of glue blocks or stops possible upwelling of liquid by capillarity and prevents them from reaching the edges of the tray.
La structure de barquette selon la présente demande avec des soufflets rabattus à l'intérieur confère en outre au produit fini un aspect extérieur impeccable permettant l'impression de messages publicitaires sur une surface sans aspérités.The tray structure according to the present application with bellows folded inside also gives the finished product an impeccable external appearance allowing the printing of advertising messages on a surface without roughness.
D'autres caractéristiques ressortiront de la description suivante qui illustre l'invention de façon non limitative en liaison avec les dessins annexés dans lesquels :Other characteristics will emerge from the following description which illustrates the invention in a nonlimiting manner in conjunction with the appended drawings in which:
- la figure 1 montre une forme de réalisation possible du flan de carton permettant la réalisation de la barquette étanche selon l'invention ;- Figure 1 shows a possible embodiment of the cardboard blank allowing the realization of the sealed container according to the invention;
- les figures 2, 3 et 4 sont des vues en perspective d'un angle de la barquette, en cours de montage ;- Figures 2, 3 and 4 are perspective views of an angle of the tray, during assembly;
- la figure 5 est une vue en perspective de la barquette selon l'invention, mise en volume. La figure 1 est une vue à plat d'un flan de carton susceptible d'être mis en volume pour obtenir une barquette étanche. Ce flan 1 est constitué d'un fond rectangulaire 2 bordé de deux grands côtés latéraux 3, 4 et de deux petits côtés latéraux d'extrémité 5 et 6, ayant des hauteurs sensiblement identiques. Les côtés 3, 4, 5 et- Figure 5 is a perspective view of the tray according to the invention, set in volume. Figure 1 is a flat view of a cardboard blank capable of being placed in volume to obtain a sealed container. This blank 1 consists of a rectangular bottom 2 bordered by two large lateral sides 3, 4 and by two small lateral end sides 5 and 6, having substantially identical heights. Sides 3, 4, 5 and
6 ont une forme sensiblement trapézoidale pour l'obtention d'une barquette en tronc de pyramide ; ils sont reliés deux à deux par des soufflets d'angles 7 destinés à réaliser l'étanchéité au moins dans le fond de la barquette et adaptés pour éviter les remontées de liquide par capillarité .6 have a substantially trapezoidal shape for obtaining a tray in the trunk of a pyramid; they are connected two by two by bellows of angles 7 intended to make the seal at least in the bottom of the tray and adapted to prevent liquid rising by capillarity.
Les quatre soufflets 7 sont identiques et constitués chacun de deux parties 8 et 9, de forme générale triangulaire, séparées par une ligne de pli médiane 10.The four bellows 7 are identical and each consists of two parts 8 and 9, of generally triangular shape, separated by a line of central fold 10.
La première partie 8 du soufflet 7 est attenante au petit côté latéral correspondan 5, 6. Elle s'étend à partir du fond 2 sur une hauteur inférieure à celle du côté latéral 5, 6 adjacent, de façon à former une ouverture ou découpe 11 dans sa partie supérieure. TelleThe first part 8 of the bellows 7 is attached at the small lateral side corresponding to 5, 6. It extends from the bottom 2 over a height less than that of the adjacent lateral side 5, 6, so as to form an opening or cutout 11 in its upper part. Such
5 qu'on l'a représentée sur la figure 1, la bordure supérieure 12 du triangle 8 s'étend sensiblement perpendiculairement à l'arête du côté latéral adjacent, à partir de la mi-hauteur de ce côté. Pour conserver une étanchéité satisfaisante dans le fond de la barquette 0 et pour permettre un montage automatique, on veillera à conserver cette partie 8 de soufflet sur une hauteur minimale de 1 cm environ.5 that has been shown in Figure 1, the upper edge 12 of the triangle 8 extends substantially perpendicular to the edge of the adjacent side, from halfway up this side. To maintain a satisfactory seal in the bottom of the tray 0 and to allow automatic mounting, care should be taken to keep this part 8 of bellows over a minimum height of approximately 1 cm.
La deuxième partie 9 du soufflet 7 est attenante au grand côté 3, • 4 correspondant ; elle s'étendThe second part 9 of the bellows 7 is adjacent to the large side 3, • 4 corresponding; She's spreading
15 sensiblement sur toute la hauteur de ce dernier. Son angle libre 13, lié à la présence de la découpe 11, est tronqué pour éviter d'avoir à manipuler une pièce de carton comportant des angles trop serrés.15 substantially over the entire height of the latter. Its free angle 13, linked to the presence of the cutout 11, is truncated to avoid having to handle a piece of cardboard having too tight angles.
La face interne du flan 1, au moins, a subi unThe internal face of the blank 1, at least, has undergone
20 traitement d'imperméabilisation qui permet de supprimer ou tout au moins de limiter la pénétration à coeur de l'humidité provenant des produits conditionnés.20 waterproofing treatment which makes it possible to suppress or at least limit the penetration to the core of the moisture coming from the packaged products.
La mise en volume de la barquette est réalisée de façon automatique par des moyens mécaniques appropriés.The volume of the tray is produced automatically by appropriate mechanical means.
^-> Cette mise en volume est réalisée en rabattant les deux parties 8 et 9 des soufflets 7 contre les faces internes, soit des petits côtés latéraux 5, 6, soit des grands côtés 3, 4, selon le cas. Ce choix est conditionné par les dimensions de la barquette et en fonction des techniques utilisées si on la recouvre d'un film plastique 30 étirable. Dans le cas présent, les soufflets 7 sont rabattus sur les faces internes des petits côtés 5 et^ - > This setting in volume is carried out by folding the two parts 8 and 9 of the bellows 7 against the internal faces, either of the short lateral sides 5, 6, or of the long sides 3, 4, as the case may be. This choice is conditioned by the dimensions of the tray and according to the techniques used if it is covered with a stretchable plastic film. In the present case, the bellows 7 are folded over the internal faces of the short sides 5 and
6.6.
Les soufflets disposés à l'intérieur de la barquette assurent une esthétique de qualité et ils ne gênent pas l'empilage des produits les uns dans les autres, sous réserve de prévoir une conicité (à déterminer en fonction du résultat final souhaité). D'autre part, ils permettent un marquage extérieur (publicité, décoration, informations ...) sur une surface lisse, sans aspérités.The bellows arranged inside the tray ensure a quality aesthetic and they do not interfere stacking of the products in each other, subject to providing a taper (to be determined according to the desired end result). On the other hand, they allow an external marking (advertising, decoration, information ...) on a smooth surface, without roughness.
La première étape du montage consiste à encoller les zones latérales de la face interne des petits côtés 5 et 6, sur lesquels vont venir se plaquer les deux parties 8 et 9 des soufflets. Cet encollage peut être réalisé sur l'intégralité de la surface 14 hachurée, ou être défini par des points de colle, disposés judicieusement, de la façon décrite plus loin.The first stage of assembly consists in gluing the lateral zones of the internal face of the short sides 5 and 6, on which the two parts 8 and 9 of the bellows will be pressed. This gluing can be carried out on the entire hatched surface 14, or be defined by glue dots, arranged judiciously, as described below.
Tel qu'on l'a représenté sur les figures 2 à 4, l'étape suivante consiste à relever les côtés latéraux 3, 4, 5 et 6 en plaquant les deux parties 8 et 9 des soufflets d'angles 7 contre le côté latéral de réception 5, 6. Par cette opération, le recto de la première partie. 8 de soufflet vient se plaquer contre la zone inférieure d'encollage ; en outre et grâce à la présence de la découpe 11, le verso de la deuxième partie 9 de soufflet vient se plaquer contre la zone supérieure d'encollage.As shown in Figures 2 to 4, the next step is to raise the lateral sides 3, 4, 5 and 6 by pressing the two parts 8 and 9 of the bellows 7 against the lateral side 5, 6. By this operation, the front of the first part. 8 of bellows is pressed against the lower gluing area; in addition and thanks to the presence of the cutout 11, the back of the second part 9 of bellows is pressed against the upper gluing area.
Selon une disposition préférée, l'encollage est obtenu au moyen de deux points de colle 15 et 16, alignés verticalement sur la zone d'encollage 14. Le point de colle 15 est disposé au niveau de la bordure supérieure 12 de la première partie 8 de soufflet ; il bloque la ligne de transition entre cette première partie 8 et la deuxième partie 9 de soufflet. En outre, il empêche la remontée d'humidité par capillarité. Le deuxième point de colle 16 est disposé dans la partie supérieure ; il assure la solidarisation de la face interne du petit côté 5, 6 avec la deuxième partie 9 de soufflet. En fonction de la hauteur de la barquette, des points de colle supplémentaires peuvent être ajoutés. A noter également que l'encollage peut se faire par tampon afin d'obtenir une surface de collage plus importante.According to a preferred arrangement, the gluing is obtained by means of two glue points 15 and 16, aligned vertically on the gluing zone 14. The glue point 15 is arranged at the upper edge 12 of the first part 8 bellows; it blocks the transition line between this first part 8 and the second part 9 of bellows. In addition, it prevents the rise of humidity by capillarity. The second point of glue 16 is disposed in the upper part; it secures the internal face of the short side 5, 6 with the second part 9 of bellows. Depending on the height of the tray, additional dots of glue can be added. Also note that the gluing can be done by stamp in order to obtain a larger bonding surface.
L'encollage est réalisé sur une face seulement du flan, la mise en volume de la barquette, qui suit cette opération d'encollage, est réalisée de façon très simple et très rapide ; le montage peut être réalisé à des cadences très élevées.The sizing is carried out on only one side of the blank, the volume setting of the tray, which follows this sizing operation, is carried out in a very simple and very rapid manner; assembly can be carried out at very high rates.
Le procédé particulier de montage permet un blocage correct au niveau des angles et une bonne étanchéité des soufflets dans le fond de la barquette.The particular mounting process allows correct blocking at the corners and good sealing of the bellows in the bottom of the tray.
Selon un mode de réalisation particulier, il est possible de supprimer la ligne de plis prévue entre la deuxième partie 9 de soufflet et le côté latéral 3, 4 adjacent. Cette particularité permet de réaliser une barquette ayant des angles moins marqués, légèrement arrondis .According to a particular embodiment, it is possible to eliminate the fold line provided between the second bellows part 9 and the adjacent lateral side 3, 4. This feature makes it possible to produce a tray with less marked angles, slightly rounded.
La forme de la barquette, en tronc de pyramide, facilite le gerbage des emballages, à vide. Bien entendu, il est tout à fait possible d'envisager de faire varier cette forme, tout en conservant la même structure et le même principe de montage.The shape of the tray, in the form of a pyramid trunk, facilitates stacking of packaging, empty. Of course, it is entirely possible to envisage varying this shape, while retaining the same structure and the same mounting principle.
Ainsi, les côtés latéraux de la barquette peuvent être perpendiculaires au fond pour obtenir un emballage parallélépipédique . D'autre part, le fond 2 peut avoir une forme polygonale quelconque.Thus, the lateral sides of the tray can be perpendicular to the bottom to obtain a parallelepiped packaging. On the other hand, the bottom 2 can have any polygonal shape.
En outre, la découpe 11 réalisée dans la zone supérieure de l'une des parties du soufflet peut être réalisée par tout moyen approprié et se présenter sous une forme quelconque . In addition, the cutout 11 produced in the upper zone of one of the parts of the bellows can be produced by any suitable means and be in any form.

Claims

- REVENDICATIONS - - CLAIMS -
1.- Barquette étanche comportant un fond (2) bordé de côtés latéraux (3, 4, 5, 6) reliés deux à deux au moyen de soufflets (7) en deux parties (8, 9) qui viennent se c plaquer sur l'un desdits côtés latéraux (3, 4, 5, 6), la première partie (8) de soufflet, attenante au côté latéral (3, 4, 5, 6) de réception, comportant une découpe (11) dans sa partie supérieure pour assurer, lors de la mise en volume, un contact direct entre la deuxième partie 0 (9) de soufflet et ledit côté latéral (3, 4, 5, 6) de réception, caractérisée en ce qu'elle comporte des soufflets (7) rabattus à l'intérieur et solidarisés sur les faces internes des côtés latéraux (3, 4, 5, 6) correspondants par des moyens de collage adaptés pour 5 éviter ou stopper toute remontée de liquide par capillarité .1.- Watertight container comprising a bottom (2) bordered by lateral sides (3, 4, 5, 6) connected two by two by means of bellows (7) in two parts (8, 9) which are pressed against the 'one of said lateral sides (3, 4, 5, 6), the first bellows part (8), adjoining the lateral receiving side (3, 4, 5, 6), comprising a cutout (11) in its upper part to ensure, during the setting in volume, a direct contact between the second part 0 (9) of bellows and said lateral side (3, 4, 5, 6) of reception, characterized in that it comprises bellows (7 ) folded inside and secured to the internal faces of the lateral sides (3, 4, 5, 6) corresponding by bonding means adapted to 5 prevent or stop any rise of liquid by capillarity.
2.- Barquette étanche selon la revendication 1, caractérisée en ce qu'elle comporte des moyens de collage disposés, d'une part, entre le côté latéral (3, 4, 5, 0 6) de solidarisation et la partie supérieure de la deuxième partie (9) de soufflet, pour la fixation de cette dernière et le maintien du volume et, d'autre part, entre ledit côté latéral (3, 4, 5, 6) et la bordure (12) de la découpe2.- sealed tray according to claim 1, characterized in that it comprises bonding means arranged, on the one hand, between the lateral side (3, 4, 5, 0 6) for securing and the upper part of the second part (9) of bellows, for fixing the latter and maintaining the volume and, on the other hand, between said lateral side (3, 4, 5, 6) and the edge (12) of the cutout
(11), pour compléter le maintien du volume et éviter que 5 les remontées éventuelles de liquide par capillarité n'atteignent les tranches découpées du flan de carton.(11), in order to complete the maintenance of the volume and to prevent the possible ascension of liquid by capillary action from reaching the cut edges of the cardboard blank.
3.- Barquette étanche selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'elle comporte des premières parties (8) de soufflets (7) dont toute la partie supérieure est découpée. 03.- sealed container according to any one of claims 1 or 2, characterized in that it comprises first parts (8) of bellows (7) whose entire upper part is cut. 0
4.- Barquette étanche selon la revendication 3, caractérisée en ce qu'elle comporte des premières parties4.- sealed container according to claim 3, characterized in that it comprises first parts
(8) de soufflets munies d'une découpe (11) qui permet de conserver ledit soufflet (7) sur une hauteur d'au moins(8) of bellows provided with a cutout (11) which makes it possible to keep said bellows (7) over a height of at least
1 cm. 5 5.- Barquette étanche selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle comporte des soufflets (7) qui s'étendent sur sensiblement la moitié de la hauteur des côtés latéraux (3, 4, 1 cm. 5 5. A sealed container according to any one of claims 1 to 4, characterized in that it comprises bellows (7) which extend over substantially half the height of the lateral sides (3, 4,
5, 6).5, 6).
; 6.- Barquette étanche selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comporte des soufflets d'angles (7) rabattus sur deux côtés latéraux; 6.- sealed tray according to any one of claims 1 to 5, characterized in that it comprises bellows of angles (7) folded down on two lateral sides.
(5 , (5,
6) opposés .6) opposites.
7.- Barquette étanche selon l'une quelconque des7.- Watertight container according to any one of
10 revendications 1 à 6, caractérisée en ce qu'elle comporte une face interne imperméabilisée.10 claims 1 to 6, characterized in that it has a waterproofed internal face.
8.- Barquette étanche selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'elle ne comporte pas de plis préparés entre la deuxième partie l-5 (9) de soufflet et le côté latéral (3, 4) adjacent à celui8.- sealed tray according to any one of claims 1 to 7, characterized in that it does not have folds prepared between the second part l- 5 (9) of bellows and the lateral side (3, 4) adjacent to the one
(5, 6) qui reçoit ledit soufflet (7).(5, 6) which receives said bellows (7).
9.- Procédé de mise en volume de la barquette selon l'une quelconque des revendications 1 à 8, à partir d'un flan de carton adapté, caractérisé en ce qu'il9.- A method of setting the volume of the tray according to any one of claims 1 to 8, from a suitable cardboard blank, characterized in that it
20 consiste : à encoller les zones (14) des côtés latéraux (5, 6) destinés à recevoir les parties (8, 9) de soufflet (7) ,20 consists in: gluing the zones (14) of the lateral sides (5, 6) intended to receive the bellows parts (8, 9) (7),
- à relever les côtés latéraux (3, 4, 5, 6),- to raise the lateral sides (3, 4, 5, 6),
- à rabattre les deux parties (8, 9) de soufflet (7) contre- folding down the two bellows parts (8, 9) (7) against
25 le côté latéral de réception (5, 6), pour solidariser l'une des faces de la première partie (8) de soufflet dans la zone inférieure, et l'autre face de la deuxième partie (9) dans la zone supérieure.25 the lateral receiving side (5, 6), to secure one of the faces of the first part (8) of bellows in the lower zone, and the other face of the second part (9) in the upper zone.
10.- Procédé selon la revendication 9, caractérisé en ce qu'il consiste à encoller les côtés latéraux (5,10.- Method according to claim 9, characterized in that it consists in gluing the lateral sides (5,
30 6) au moyen de deux points de colle (15, 16), l'un (15) au niveau de la bordure supérieure (12) de la première partie (8) de soufflet, pour bloquer la ligne de transition entre les première et deuxième parties (8 et 9) de soufflet, et l'autre (16) dans la partie supérieure pour6) by means of two glue dots (15, 16), one (15) at the level of the upper edge (12) of the first part (8) of bellows, to block the transition line between the first and second bellows parts (8 and 9), and the other (16) in the upper part for
35 la solidarisation de la seconde partie (9) de soufflet. 35 the securing of the second part (9) of the bellows.
EP93905383A 1992-02-11 1993-02-10 Liquid-tight packaging tray and its manufacturing method Expired - Lifetime EP0625113B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9201779A FR2687128B1 (en) 1992-02-11 1992-02-11 CARDBOARD BLANK FOR THE PRODUCTION OF A SEALED CONTAINER, METHOD FOR VOLUMEING THE BLANK AND SEALED CONTAINER.
FR9201779 1992-02-11
PCT/FR1993/000139 WO1993015962A1 (en) 1992-02-11 1993-02-10 Liquid-tight boat-shaped packaging tray and its manufacturing method

Publications (2)

Publication Number Publication Date
EP0625113A1 true EP0625113A1 (en) 1994-11-23
EP0625113B1 EP0625113B1 (en) 1998-11-25

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EP (1) EP0625113B1 (en)
JP (1) JPH07503439A (en)
AT (1) ATE173699T1 (en)
CA (1) CA2129829A1 (en)
DE (1) DE69322257T2 (en)
DK (1) DK0625113T3 (en)
ES (1) ES2127269T3 (en)
FR (1) FR2687128B1 (en)
GR (1) GR3029478T3 (en)
WO (1) WO1993015962A1 (en)

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FR2687128B1 (en) 1995-05-05
ATE173699T1 (en) 1998-12-15
WO1993015962A1 (en) 1993-08-19
DE69322257T2 (en) 1999-08-05
JPH07503439A (en) 1995-04-13
DK0625113T3 (en) 1999-08-09
CA2129829A1 (en) 1993-08-19
ES2127269T3 (en) 1999-04-16
DE69322257D1 (en) 1999-01-07
US5954263A (en) 1999-09-21
EP0625113B1 (en) 1998-11-25
GR3029478T3 (en) 1999-05-28
FR2687128A1 (en) 1993-08-13

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