EP0108701B1 - Container with seamed top and/or bottom covers, and method of manufacturing it - Google Patents

Container with seamed top and/or bottom covers, and method of manufacturing it Download PDF

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Publication number
EP0108701B1
EP0108701B1 EP83440052A EP83440052A EP0108701B1 EP 0108701 B1 EP0108701 B1 EP 0108701B1 EP 83440052 A EP83440052 A EP 83440052A EP 83440052 A EP83440052 A EP 83440052A EP 0108701 B1 EP0108701 B1 EP 0108701B1
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EP
European Patent Office
Prior art keywords
tubular body
annular rim
container
lid
collar
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.)
Expired
Application number
EP83440052A
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German (de)
French (fr)
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EP0108701A1 (en
Inventor
Georges Sireix
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Individual
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Individual
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Priority to AT83440052T priority Critical patent/ATE20224T1/en
Publication of EP0108701A1 publication Critical patent/EP0108701A1/en
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Publication of EP0108701B1 publication Critical patent/EP0108701B1/en
Expired legal-status Critical Current

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    • 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
    • B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
    • B65D15/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums
    • B65D15/04—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper
    • B65D15/06—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of curved, or partially curved, cross-section, e.g. cans, drums with curved, or partially curved, walls made by winding or bending paper with end walls made of metal

Definitions

  • the invention relates, on the one hand, to a container with a bottom and / or a crimped lid, in particular a packaging box for food, chemical, industrial or other products, in particular for pressurized products or products requiring heat treatment such as that pasteurization or sterilization and formed of a hollow tubular composite body, of a bottom and / or of a cover composed of a shutter flange, of a collar and of an annular rim folded over the periphery of the ends of the body hollow tubular, said container further comprising a hot-melt connection for fixing the bottom and / or the cover, extending over the entire height of the collar, spanning the upper and / or lower edges of the hollow tubular body and covering the ends of the latter of a height corresponding to the height of the folded end of the annular rim of the bottom and / or of the cover, and on the other hand, a method of manufacturing this container.
  • Document FR-A-2 473 994 already discloses an improved composite container and its manufacturing process.
  • the cylindrical body of the container is formed of a composite structure in which a structural material is sandwiched between two polypropylene films.
  • a hermetic seal is placed between the body and the cover by the addition of materials arranged along the crimping zone.
  • Document US-A-4,270,475 also discloses a process for forming containers with smooth edges.
  • a cover is used whose rim is slightly smaller in diameter than that of the cylindrical body of the container.
  • a crimping with double folding of the cover is then carried out, which makes it possible to fold the ends of the cylindrical body of the container slightly inwards so that the container provided with its cover has a smooth wall.
  • the container body is formed of a layer of spiral cardboard covered in its internal part with a plastic film.
  • Document US-A-2 986 319 discloses an aerated container and its manufacturing process. According to this process, the container, intended to allow the internal gases to escape, is composed of a cylindrical body coated in its internal part with a waterproof film. However, when the cover is placed on the body of the container, a layer of porous materials is inserted between the two parts.
  • Document FR-A-2 320 867 discloses a thin-walled container with a crimped lid and the method for producing this container. For this purpose, a sealing material is placed between the cover and the body of the container. The lid crimps on its periphery a double fold and is folded against the end wall of the container.
  • a container of the type set out in the preamble of claim 1 comprises a composite tubular body, a cover and a bottom and a hot-melt connection interposed between said cover and / or bottom and the tubular body for fixing thereto, the container described in this document being able to receive liquids to be sterilized.
  • this packaging requires the presence of an annular reinforcement located in the vicinity of the ends of the tubular body and being in the form of a protruding bead.
  • the present invention aims to remedy these drawbacks.
  • the invention solves the problem of creating containers formed of a composite hollow tubular body and a bottom and / or lid of which the connections between said body and the bottom and / or the cover resist both internal pressure and relatively high external pressure. Furthermore, these containers are devoid of any protruding bead at the location of said connections, which makes it possible to attach the bodies of the containers and, thus, to gain storage volume and to increase the stability of a stack of containers. superimposed.
  • connection between the hollow tubular body and the bottom and / or the cover is consolidated, thus making it possible to annihilate practically any deformation and / or tearing of the bottom and / or the cover under the effect of external or internal pressure while increasing the tightness of the container, on the one hand, vis-à-vis a liquid content under pressure and, on the other hand, vis-à-vis atmospheric agents external.
  • the container for products under relatively high pressure such as beer, sparkling water and the like or for products requiring heat treatment for pasteurization or sterilization of the content.
  • the container 1 comprises a hollow tubular body 2 of any cross section, for example circular, polygonal or the like.
  • This hollow tubular body 2 is closed at one of its ends 3 with a bottom 4 and at the other end 5 with a cover 6.
  • the bottom 4 and the cover 6 are practically of the same constitution, except that the cover 6 may include an opening means for extracting the content.
  • the content can be any, for example food, chemical, industrial or other products in the form of granules, powders, liquids or gases, products under pressure or products requiring heat treatment such as pasteurization and / or sterilization.
  • said end 3 or 5 is given a flared neck 15.
  • the bottom 4 and / or the cover 6 are formed by a shutter flange 16, a flange 17 connected by a rounded 18 to said shutter flange 16 and an annular flange 19 connected to the flange 17 by a rounded 20 and formed a flat part 21 and an end 22 slightly curved downwards.
  • the collar 17 has a tapered cartaine to facilitate the introduction of the bottom 4 and / or of the cover 6 into the flared neck 15 produced at the ends 3 and 5 of the hollow tubular body 2.
  • the shutter flange 16 When the bottom 4 or the cover 6 is intended for a container containing a product under pressure, the shutter flange 16 has a convex bending 23 (see FIG. 4). In the case of a beer, the pressure can reach 6.5 bars for a temperature of the order of 65 degrees Celsius.
  • the flange shutter 16 is plane.
  • the heat treatment resulting in a certain expansion of the shutter flange 16 " there are provided in the latter bosses in the form of concentric waves 24, 25 whose voids 26, 27 allow the expansions of the shutter flange 16 1 to be absorbed ( see figure 5).
  • the shape of the bottom 4 or of the cover 6 is obtained by stamping or by any other means making it possible to obtain a bottom 4 and / or a cover 6 adapted to the shape of the section of the hollow tubular body 2.
  • the bottom 4 or the cover 6 is formed of a strip 28 whose internal face 29 in contact with the contents is covered with a food resin 30.
  • the bottom 4 or the cover 6 is provided with a hot-melt film 31 applied to the food resin 30.
  • This hot-melt film 31 extends over the entire height of the flange 17 and on the lower face 32 of the flat part 21 of the annular rim 19 up to the edge 33 of the end curved 22.
  • the hot-melt connection between the hollow tubular body 2 and the bottom 4 or the cover 6 depends essentially on the size of the height of the flange 17.
  • connection can be consolidated by a seal 34 arranged in the internal corner 35 formed by the flange 17 and the flat part 21 of the annular rim 19.
  • This seal 34 applied to the hot-melt film 31 extends over a certain length 36 of the flat part 21 of the annular rim 19 and over a certain height 37 of the flange 17.
  • the height 37 is greater than the length 36.
  • the pre-crimping is followed either by a final crimping, or a final die-stamping.
  • the flange 17 of the bottom 4 and / or of the cover 6 is straightened so that it is applied entirely against the internal face 39 of the hollow tubular body 2 while the lower face 32 of the flat part 21 of the annular rim 19 is applied against the edge 38 of the flared neck 15 and, on the other hand, the flared neck 15 itself to tilt it towards the central axis of the hollow tubular body 2.
  • the curved end 22 of the annular rim 19 of the bottom 4 or of the cover 6 intimately marries the external face 40 of the neck 15 so that the edge 33 of the annular rim 19 is encrusted in the outer periphery 11 of the hollow tubular body 2, that is to say that this outer periphery 11 undergoes local crushing defining a peripheral groove inside which the edge 33 of the annular rim 19 engages.
  • the outer periphery of fixing 7, 8 of the bottom 4 or of the cover 6 is located recessed with respect to u outer periphery 11 of the hollow tubular body 2.
  • the external fixing periphery 7, 8 of the bottom 4 or of the cover 6 is in the same vertical plane 9, 10 as the external periphery 11 of the hollow tubular body 2 and the flared neck 15 is erased and is located in the extension of the hollow tubular body 2.
  • the hot-melt film 31 is welded, this welding being able to be carried out by conduction, high-frequency, ultrasound, by laser or by mechanical means such as heating knobs , swivel wheels or the like.
  • the first zone 41 acting against humidity and representing a tear resistance of the order of 15% relative to the total resistance is located at the end 3, 5 of the hollow body 2
  • the second zone 42 representing a tear resistance of the order of 5% relative to the total resistance is located on the edge 38 of the hollow body 2
  • the third zone 43 relates to the seal and it is formed by the seal 34 and the fourth zone 44 representing a tear resistance of the order of 80% relative to the total resistance is located at l location of the collar 17.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Packages (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Table Devices Or Equipment (AREA)
  • Closures For Containers (AREA)

Abstract

1. Container with inset bottom and/or lid, more especially packaging box for food, chemical, industrial or other products, particularly for pressurized products or products necessitating thermal processing such as pasteurization or sterilization and consisting of a composite tubular body (2), a base (4) and/or a lid (6) made up of a sealing flange (16), a collar (17) and an annular rim (19) curving back from the circumference of the ends (3) and (5) of the tubular body (2), the said container additionally comprising a thermoplastic connection (31) for fastening the bottom (4) and/or the lid (6) extending over the whole height of the collar (17), bestriding the upper and/or lower edges (38) of the tubular body (2) and covering the ends of the latter to a depth corresponding to the height of the curved end (22) of the annular rim (19) of the bottom (4) and/or of the lid (6), characterized by the fact that the annular rim (19) of the bottom (4) and/or of the lid (6) has an outer circumference receding from the outer circumference (11) of the tubular body (2), the edge (33) of the said annular rim (19) engaging in a peripheral groove resulting from local crushing of the outer circumference (11) of the tubular body (2) by the said annular rim (19).

Description

Linvention concerne, d'une part, un contenant à fond et/ou à couvercle sertis, notamment boîte d'emballage pour des produits alimentaires, chimiques, industriels ou autres, en particulier pour des produits sous pression ou des produits nécessitant un traitement thermique tels que pasteurisation ou stérilisation et formé d'un corps tubulaire creux composite, d'un fond et/ou d'un couvercle composés d'un flasque obturateur, d'une collerette et d'un rebord annulaire replié sur le pourtour des extrémités du corps tubulaire creux, ledit contenant comportant en outre, une liaison thermofusible pour la fixation du fond et/ou du couvercle, s'étendant sur toute la hauteur de la collerette, enjambant les chants supérieur et/ou inférieur du corps tubulaire creux et recouvrant les extrémités de ce dernier d'une hauteur correspondant à la hauteur de l'extrémité repliée du rebord annulaire du fond et/ou du couvercle, et d'autre part, un procédé de fabrication de ce contenant.The invention relates, on the one hand, to a container with a bottom and / or a crimped lid, in particular a packaging box for food, chemical, industrial or other products, in particular for pressurized products or products requiring heat treatment such as that pasteurization or sterilization and formed of a hollow tubular composite body, of a bottom and / or of a cover composed of a shutter flange, of a collar and of an annular rim folded over the periphery of the ends of the body hollow tubular, said container further comprising a hot-melt connection for fixing the bottom and / or the cover, extending over the entire height of the collar, spanning the upper and / or lower edges of the hollow tubular body and covering the ends of the latter of a height corresponding to the height of the folded end of the annular rim of the bottom and / or of the cover, and on the other hand, a method of manufacturing this container.

On connaît déjà, par le document FR-A-2 473 994, un récipient composite perfectionné et son procédé de fabrication. Selon ce document, le corps cylindrique du récipient est formé d'une structure composite dans laquelle une matière structurale est prise en sandwich entre deux pellicules de polypropylène. En outre, un joint hermétique est mis en place entre le corps et le couvercle par l'adjonction de matières disposés le long de la zone de sertissage.Document FR-A-2 473 994 already discloses an improved composite container and its manufacturing process. According to this document, the cylindrical body of the container is formed of a composite structure in which a structural material is sandwiched between two polypropylene films. In addition, a hermetic seal is placed between the body and the cover by the addition of materials arranged along the crimping zone.

On connaît également, par le document US-A-4 270 475, un procédé de formation de containers à bords lisses. Dans ce procédé, on utilise un couvercle dont le rebord est de diamètre légèrement inférieur à celui du corps cylindrique du container. On réalise ensuite un sertissage à double rabattement du couvercle, ce qui permet de replier les extrémités du corps cylindrique du container légèrement vers l'intérieur de façon à ce que le container muni de son couvercle présente une paroi lisse. Selon ce brevet, le corps du container est formé d'une couche de carton spiralé recouvert dans sa partie interne d'un film plastifié.Document US-A-4,270,475 also discloses a process for forming containers with smooth edges. In this process, a cover is used whose rim is slightly smaller in diameter than that of the cylindrical body of the container. A crimping with double folding of the cover is then carried out, which makes it possible to fold the ends of the cylindrical body of the container slightly inwards so that the container provided with its cover has a smooth wall. According to this patent, the container body is formed of a layer of spiral cardboard covered in its internal part with a plastic film.

On connaît, par le document US-A-2 986 319, un container aéré et son procédé de fabrication. Selon ce procédé, le container, destiné à laisser échapper les gaz internes, est composé d'un corps cylindrique revêtu dans sa partie interne d'un film étanche. Toutefois, lors de la mise en place du couvercle sur le corps du container, on intercale entre les deux pièces une couche de matériaux poreux au gaz.Document US-A-2 986 319 discloses an aerated container and its manufacturing process. According to this process, the container, intended to allow the internal gases to escape, is composed of a cylindrical body coated in its internal part with a waterproof film. However, when the cover is placed on the body of the container, a layer of porous materials is inserted between the two parts.

Par le document FR-A-2 320 867, on connaît un récipient à paroi mince à couvercle serti et le procédé pour réaliser ce récipient. A cet effet, une matière de scellement est disposée entre le couvercle et le corps du récipient. Le couvercle sertit sur sa périphérie un double repliage et est rabattu contre la paroi extrême du récipient.Document FR-A-2 320 867 discloses a thin-walled container with a crimped lid and the method for producing this container. For this purpose, a sealing material is placed between the cover and the body of the container. The lid crimps on its periphery a double fold and is folded against the end wall of the container.

On connaît, en outre, par le document GB-A-1 124 636, un contenant du type énoncé dans le préambule de la revendication 1. Un tel contenant comprend un corps tubulaire composite, un couvercle et un fond et une liaison thermofusible intercalée entre ledit couvercle et/ou fond et le corps tubulaire pour la fixation à celui-ci, le conteneur décrit dans ce document pouvant recevoir des liquides à stériliser. Toutefois, cet emballage nécessite la présence d'un renforcement annulaire localisé au voisinage des extrémités du corps tubulaire et se présentant sous la forme d'un bourrelet saillant.Also known from GB-A-1 124 636 is a container of the type set out in the preamble of claim 1. Such a container comprises a composite tubular body, a cover and a bottom and a hot-melt connection interposed between said cover and / or bottom and the tubular body for fixing thereto, the container described in this document being able to receive liquids to be sterilized. However, this packaging requires the presence of an annular reinforcement located in the vicinity of the ends of the tubular body and being in the form of a protruding bead.

Toutefois, ces emballages comportant un corps tubulaire composite constitués notamment de plusieurs bandes de carton collées ensemble ne peuvent renfermer des produits sous pression tels que bière, champagne ou autres et, par voie de conséquence, des produits sous vide. En effet, il a été constaté que sous l'effet de la pression pouvant, par exemple, atteindre jusqu'à 6,5 bars pour la bière, le couvercle et/ou le fond s'arrachaient du corps tubulaire composite et pour pallier à cet inconvénient le corps en question était remplacé par un corps métallique, ce qui augmentait le prix de revient de ces emballages.However, these packages comprising a composite tubular body made up in particular of several strips of cardboard glued together cannot contain pressurized products such as beer, champagne or the like and, consequently, vacuum-packed products. In fact, it has been observed that under the effect of pressure which can, for example, reach up to 6.5 bars for beer, the cover and / or the bottom tore off from the composite tubular body and to compensate for this drawback the body in question was replaced by a metal body, which increased the cost price of these packages.

Il en est de même pour les produits alimentaires nécessitant un traitement thermique tel qu'une pasteurisation et/ou une stérilisation à une température de l'ordre de 142 degrés Celsius.The same is true for food products requiring heat treatment such as pasteurization and / or sterilization at a temperature of the order of 142 degrees Celsius.

Par ailleurs, les contenants connus présentant à leurs extrémités supérieure et inférieure un bourrelet dû au sertissage ou au matriçage du fond et/ou du couvercle sur le corps.
Or, la présence de ces bourrelets nuit considérablement et au transport et au stockage des contenants. En effet, on a l'habitude, pour le transport des contenants de les conditionner sous former de containers ou de paquets. Il est donc certain qu'à l'emplacement des bourrelets, il y a une perte de volume dont la somme totale peut être plus ou moins importante. Fréquemment, les bourrelets entre deux contenants juxtaposés se chevauchent et, en conséquence, les contenants présentent une certaine inclinaison par rapport à la verticale. Cet inconvénient confère à la pile de contenants superposés un équilibre instable, notamment lorsque les contenants sont simplement posés les uns sur les autres sans un conditionnement approprié.Furthermore, known containers having at their upper and lower ends a bead due to crimping or forging of the bottom and / or the cover on the body.
However, the presence of these beads considerably affects both the transport and the storage of the containers. In fact, for the transport of containers, we are used to packaging them in the form of containers or packages. It is therefore certain that at the location of the beads, there is a loss of volume, the total sum of which may be more or less significant. Frequently, the beads between two juxtaposed containers overlap and, as a result, the containers have a certain inclination relative to the vertical. This drawback gives the stack of stacked containers an unstable balance, especially when the containers are simply placed on top of each other without suitable packaging.

La présente invention a pour but de remédier à ces inconvénients.The present invention aims to remedy these drawbacks.

L'invention, telle qu'elle est caractérisée dans la revendication 1 de contenant et dans la revendication 10 de procédé, résout le problème consistant à créer des contenants formés d'un corps tubulaire creux composite et d'un fond et/ou couvercle dont les liaisons entre ledit corps et le fond et/ou le couvercle résistent aussi bien à une pression interne qu'à une pression externe relativement importantes. Par ailleurs, ces contenants sont dépourvus à l'emplacement desdites liaisons de tout bourrelet saillant, ce qui permet d'accoler les corps des contenants et, ainsi, de gagner du volume de rangement et d'augmenter la stabilité d'une pile de contenants superposés.The invention, as characterized in claim 1 of container and in claim 10 of process, solves the problem of creating containers formed of a composite hollow tubular body and a bottom and / or lid of which the connections between said body and the bottom and / or the cover resist both internal pressure and relatively high external pressure. Furthermore, these containers are devoid of any protruding bead at the location of said connections, which makes it possible to attach the bodies of the containers and, thus, to gain storage volume and to increase the stability of a stack of containers. superimposed.

Les avantages obtenus grâce à cette invention consistent essentiellement en ce que la liaison entre le corps tubulaire creux et le fond et/ou le couvercle est consolidée permettant ainsi d'annihiler pratiquement toute déformation et/ou arrachement du fond et/ou du couvercle sous l'effet d'une pression externe ou interne tout en augmentant l'étanchéité du contenant, d'une part, vis-à-vis d'un contenu liquide sous pression et, d'autre part, vis-à-vis des agents atmosphériques externes.The advantages obtained thanks to this invention essentially consist in that the connection between the hollow tubular body and the bottom and / or the cover is consolidated, thus making it possible to annihilate practically any deformation and / or tearing of the bottom and / or the cover under the effect of external or internal pressure while increasing the tightness of the container, on the one hand, vis-à-vis a liquid content under pressure and, on the other hand, vis-à-vis atmospheric agents external.

De ce fait, il est possible d'utiliser le contenant pour des produits sous pression relativement forte telles que bière, eau gazeuse et autres ou pour des produits nécessitant un traitement thermique pour la pasteurisation ou la stérilisation du contenu.Therefore, it is possible to use the container for products under relatively high pressure such as beer, sparkling water and the like or for products requiring heat treatment for pasteurization or sterilization of the content.

Linvention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.

  • La figure 1 représente, en vue en élévation, un contenant à fond et à couvercle sertis conforme à l'invention.
  • La figure 2 représente, en une vue partielle en élévation et en coupe, l'une des extrémités du corps tubulaire creux.
  • La figure 3 représente, en une vue partielle en élévation et en coupe, cette même extrémité présentant un col évasé pour faciliter la mise en place du couvercle ou du fond dans le corps tubulaire creux.
  • La figure 4 représente, en vue en élévation et en coupe, un couvercle ou un fond destiné à la réalisation d'un contenant renfermant un produit sous pression.
  • La figure 5 représente, en vue en élévation et en coupe, un couvercle ou un fond destiné à la réalisation d'un contenant renfermant un produit nécessitent un traitement thermique.
  • La figure 6 représente, en une vue partielle en élévation et en coupe, le couvercle ou le fond conforme à l'invention.
  • La figure 7 représente, en une vue partielle en élévation et en coupe, l'extrémité du corps tubulaire creux dans laquelle est inséré un fond ou un couvercle.
  • La figure 8 représente, en une vue partielle en élévation et en coupe, l'extrémité du corps tubulaire pourvue d'un couvercle ou d'un fond dont le pourtour du rebord annulaire est en retrait par rapport au pourtour du corps tubulaire creux.
  • La figure 9 représente, en une vue partielle en élévation et en coupe, l'extrémité du corps tubulaire pourvue d'un couvercle ou d'un fond dont le pourtour du rebord annulaire est dans le même plan que le pourtour du corps tubulaire creux.
The invention is set out below in more detail with the aid of drawings representing only one embodiment.
  • Figure 1 shows, in elevational view, a container bottom and lid crimped according to the invention.
  • 2 shows, in a partial view in elevation and in section, one of the ends of the hollow tubular body.
  • FIG. 3 represents, in a partial view in elevation and in section, this same end having a flared neck to facilitate the positioning of the cover or the bottom in the hollow tubular body.
  • Figure 4 shows, in elevational view in section, a cover or bottom intended for the production of a container containing a product under pressure.
  • FIG. 5 represents, in elevation view and in section, a cover or a bottom intended for the realization of a container containing a product require a heat treatment.
  • FIG. 6 represents, in a partial view in elevation and in section, the cover or the bottom according to the invention.
  • FIG. 7 represents, in a partial view in elevation and in section, the end of the hollow tubular body in which a bottom or a cover is inserted.
  • FIG. 8 represents, in a partial view in elevation and in section, the end of the tubular body provided with a cover or a bottom whose periphery of the annular rim is recessed with respect to the periphery of the hollow tubular body.
  • FIG. 9 represents, in a partial view in elevation and in section, the end of the tubular body provided with a cover or with a bottom whose periphery of the annular rim is in the same plane as the periphery of the hollow tubular body.

On se réfère à la figure 1.We refer to figure 1.

Le contenant 1 selon l'invention comporte un corps tubulaire creux 2 de section quelconque par exemple circulaire, polygonale ou autres. Ce corps tubulaire creux 2 est obturé à l'une de ses extrémités 3 d'un fond 4 et à l'autre extrémité 5 d'un couvercle 6. Le fond 4 et le couvercle 6 sont pratiquement de même constitution, sauf que le couvercle 6 peut comporter un moyen d'ouverture pour extraire le contenu. Le contenu peut être quelconque, par exemple des produits alimentaires, chimiques, industriels ou autres sous forme de granulés, de poudres, de liquides ou de gaz, des produits sous pression ou des produits nécessitant un traitement thermique telle qu'une pasteurisation et/ou une stérilisation.The container 1 according to the invention comprises a hollow tubular body 2 of any cross section, for example circular, polygonal or the like. This hollow tubular body 2 is closed at one of its ends 3 with a bottom 4 and at the other end 5 with a cover 6. The bottom 4 and the cover 6 are practically of the same constitution, except that the cover 6 may include an opening means for extracting the content. The content can be any, for example food, chemical, industrial or other products in the form of granules, powders, liquids or gases, products under pressure or products requiring heat treatment such as pasteurization and / or sterilization.

Conformément à l'invention, le fond 4 et/ou le couvercle 6 sont fixés sur les extrémités 3, 5 du corps tubulaire creux 2 soit par sertissage, matriçage ou autre moyen. Le pourtour extérieur de fixation 7, 8 du fond 4 et/ou du couvercle 6 est situé soit en retrait, soit dans le même plan vertical 9, 10 que le pourtour extérieur 11 du corps tubulaire creux 2. Ce dernier peut être métallique, en matières plastiques ou composite. Dans le cadre d'un corps métallique, on pourvoit la face interne d'un vernis et, notamment d'une résine dite «résine alimentaire». Dans le cadre d'un corps composite, le corps tubulaire creux 2 se compose de trois parties:

  • - la partie externe 12 constituée d'une étiquette formée d'un support en papier consolidé par un support métallique tel que l'aluminium, d'une impression et d'un film plastique ou d'un vernis;
  • - l'âme centrale 13 composée de plusieurs couches 131, 132, 133 de carton neuf ou recyclé;
  • - la partie interne 14 formée d'un support en papier, d'un support métallique et d'un film plastique ou d'un vernis (voir figures 2 et 3).
According to the invention, the bottom 4 and / or the cover 6 are fixed to the ends 3, 5 of the hollow tubular body 2 either by crimping, stamping or other means. The outer fixing periphery 7, 8 of the bottom 4 and / or of the cover 6 is situated either in the setback or in the same vertical plane 9, 10 as the external periphery 11 of the hollow tubular body 2. The latter can be metallic, in plastic or composite materials. Within the framework of a metallic body, the internal face is provided with a varnish and, in particular with a resin known as "food resin". Within the framework of a composite body, the hollow tubular body 2 is made up of three parts:
  • - The external part 12 consisting of a label formed by a paper support consolidated by a metal support such as aluminum, a print and a plastic film or a varnish;
  • - The central core 13 composed of several layers 13 1 , 13 2 , 13 3 of new or recycled cardboard;
  • - The internal part 14 formed of a paper support, a metal support and a plastic film or a varnish (see Figures 2 and 3).

Pour faciliter l'introduction du fond 4 ou du couvercle 6 dans l'extrémité 3 ou 5 du corps tubulaire creux 2, on confère à ladite extrémité 3 ou 5 un col évasé 15.To facilitate the introduction of the bottom 4 or of the cover 6 into the end 3 or 5 of the hollow tubular body 2, said end 3 or 5 is given a flared neck 15.

On se réfère aux figures 4 et 5.We refer to Figures 4 and 5.

Le fond 4 et/ou le couvercle 6 sont formés d'un flasque obturateur 16, d'une collerette 17 reliée par un arrondi 18 audit flasque obturateur 16 et d'un rebord annulaire 19 relié à la collerette 17 par un arrondi 20 et constitué d'une partie plane 21 et d'une extrémité 22 légèrement recourbée vers le bas. La collerette 17 présente une cartaine conicité pour faciliter l'introduction du fond 4 et/ou du couvercle 6 dans le col évasé 15 réalisé aux extrémités 3 et 5 du corps tubulaire creux 2.The bottom 4 and / or the cover 6 are formed by a shutter flange 16, a flange 17 connected by a rounded 18 to said shutter flange 16 and an annular flange 19 connected to the flange 17 by a rounded 20 and formed a flat part 21 and an end 22 slightly curved downwards. The collar 17 has a tapered cartaine to facilitate the introduction of the bottom 4 and / or of the cover 6 into the flared neck 15 produced at the ends 3 and 5 of the hollow tubular body 2.

Lorsque le fond 4 ou le couvercle 6 est destiné à un contenant renfermant un produit sous pression, la flasque obturateur 16 présente un bombage convexe 23 (voir figure 4). Dans le cas d'une bière, la pression peut atteindre 6,5 bars pour une température de l'ordre de 65 degrés Celsius.When the bottom 4 or the cover 6 is intended for a container containing a product under pressure, the shutter flange 16 has a convex bending 23 (see FIG. 4). In the case of a beer, the pressure can reach 6.5 bars for a temperature of the order of 65 degrees Celsius.

Par contre, lorsque le fond 41 ou le couvercle 61 est destiné à un contenant renfermant un produit soumis à un traitement thermique de l'ordre de 140 à 160 degrés Celsius alors que la pression est limitée à 2,5 bars, le flasque obturateur 16, est plan. Toutefois, en raison du traitement thermique entraînant une certaine dilatation du flasque obturateur 16" on prévoit dans ce dernier des bossages sous forme d'ondes concentriques 24, 25 dont les vides 26, 27 permettent d'absorber les dilatations du flasque obturateur 161 (voir figure 5).On the other hand, when the bottom 4 1 or the cover 6 1 is intended for a container containing a product subjected to a heat treatment of the order of 140 to 160 degrees Celsius while the pressure is limited to 2.5 bars, the flange shutter 16, is plane. However, due to the heat treatment resulting in a certain expansion of the shutter flange 16 ", there are provided in the latter bosses in the form of concentric waves 24, 25 whose voids 26, 27 allow the expansions of the shutter flange 16 1 to be absorbed ( see figure 5).

La forme du fond 4 ou du couvercle 6 est obtenue par emboutissage ou par tout autre moyen permettant d'obtenir un fond 4 et/ou un couvercle 6 adaptés à la forme de la section du corps tubulaire creux 2.The shape of the bottom 4 or of the cover 6 is obtained by stamping or by any other means making it possible to obtain a bottom 4 and / or a cover 6 adapted to the shape of the section of the hollow tubular body 2.

On se réfère à la figure 6.We refer to figure 6.

Le fond 4 ou le couvercle 6 est formé d'un feuillard 28 dont la face interne 29 en contact avec le contenu est recouverte d'une résine alimentaire 30. Conformément à l'invention, on pourvoit le fond 4 ou le couvercle 6 d'un film thermofusible 31 appliqué sur la résine alimentaire 30. Ce film thermofusible 31 s'étend sur toute la hauteur de la collerette 17 et sur la face inférieure 32 de la partie plane 21 du rebord annulaire 19 jusqu'au chant 33 de l'extrémité recourbée 22. Bien entendu, la liaison thermofusible entre le corps tubulaire creux 2 et le fond 4 ou le couvercle 6 est fonction essentiellement de l'importance de la hauteur de la collerette 17.The bottom 4 or the cover 6 is formed of a strip 28 whose internal face 29 in contact with the contents is covered with a food resin 30. According to the invention, the bottom 4 or the cover 6 is provided with a hot-melt film 31 applied to the food resin 30. This hot-melt film 31 extends over the entire height of the flange 17 and on the lower face 32 of the flat part 21 of the annular rim 19 up to the edge 33 of the end curved 22. Of course, the hot-melt connection between the hollow tubular body 2 and the bottom 4 or the cover 6 depends essentially on the size of the height of the flange 17.

Selon les besoins, on peut consolider la liaison par un joint d'étanchéité 34 disposé dans le coin interne 35 formé par la collerette 17 et la partie plane 21 du rebord annulaire 19. Ce joint 34, appliqué sur le film thermofusible 31 s'étend sur une certaine longueur 36 de la partie plane 21 du rebord annulaire 19 et sur une certaine hauteur 37 de la collerette 17. Avantageusement, la hauteur 37 est supérieure à la longueur 36.As required, the connection can be consolidated by a seal 34 arranged in the internal corner 35 formed by the flange 17 and the flat part 21 of the annular rim 19. This seal 34, applied to the hot-melt film 31 extends over a certain length 36 of the flat part 21 of the annular rim 19 and over a certain height 37 of the flange 17. Advantageously, the height 37 is greater than the length 36.

On se réfère à la figure 7.We refer to figure 7.

Après introduction du fond 4 et/ou couvercle 6, on procède à un présertissage pour appliquer la face inférieure 32 de la partie plane 21 du rebord annulaire 19 sur le chant 38 du col évasé 15 du corps tubulaire creux 2 tout en provoquant un certain écrasement du joint d'étanchéité 34 lorsque, bien entendu, celui-ci à été mis.After introduction of the bottom 4 and / or cover 6, a preserting is carried out in order to apply the lower face 32 of the flat part 21 of the annular rim 19 to the edge 38 of the flared neck 15 of the hollow tubular body 2 while causing some crushing of the seal 34 when, of course, it has been put.

Comme visible à la figure 8, le présertissage est suivi soit d'un sertissage final, soit d'un matriçage final. Dans cette dernière phase, on redresse, d'une part, la collerette 17 du fond 4 et/ou du couvercle 6 de sorte qu'elle s'applique entièrement contre la face interne 39 du corps tubulaire creux 2 alors que la face inférieure 32 de la partie plane 21 du rebord annulaire 19 s'applique contre le chant 38 du col évasé 15 et, d'autre part, le col évasé 15 lui-même pour l'incliner vers l'axe central du corps tubulaire creux 2. Par ailleurs, l'extrémité recourbée 22 du rebord annulaire 19 du fond 4 ou du couvercle 6 épouse intimement la face externe 40 du col 15 de sorte que le chant 33 du rebord annulaire 19 vient s'incruster dans le pourtour extérieur 11 du corps tubulaire creux 2, c'est-à-dire que ce pourtour extérieur 11 subit un écrasement local définissant une rainure périphérique à l'intérieur de laquelle vient s'engager le chant 33 du rebord annulaire 19. Comme visible dans cette figure, le pourtour extérieur de fixation 7, 8 du fond 4 ou du couvercle 6 est situé en retrait par rapport au pourtour extérieur 11 du corps tubulaire creux 2.As shown in Figure 8, the pre-crimping is followed either by a final crimping, or a final die-stamping. In this last phase, on the one hand, the flange 17 of the bottom 4 and / or of the cover 6 is straightened so that it is applied entirely against the internal face 39 of the hollow tubular body 2 while the lower face 32 of the flat part 21 of the annular rim 19 is applied against the edge 38 of the flared neck 15 and, on the other hand, the flared neck 15 itself to tilt it towards the central axis of the hollow tubular body 2. By elsewhere, the curved end 22 of the annular rim 19 of the bottom 4 or of the cover 6 intimately marries the external face 40 of the neck 15 so that the edge 33 of the annular rim 19 is encrusted in the outer periphery 11 of the hollow tubular body 2, that is to say that this outer periphery 11 undergoes local crushing defining a peripheral groove inside which the edge 33 of the annular rim 19 engages. As visible in this figure, the outer periphery of fixing 7, 8 of the bottom 4 or of the cover 6 is located recessed with respect to u outer periphery 11 of the hollow tubular body 2.

Selon un autre mode de réalisation visible dans la figure 9, le pourtour extérieur de fixation 7, 8 du fond 4 ou du couvercle 6 est dans le même plan vertical 9, 10 que le pourtour extérieur 11 du corps tubulaire creux 2 et le col évasé 15 est effacé et se situe dans le prolongement du corps tubulaire creux 2.According to another embodiment visible in FIG. 9, the external fixing periphery 7, 8 of the bottom 4 or of the cover 6 is in the same vertical plane 9, 10 as the external periphery 11 of the hollow tubular body 2 and the flared neck 15 is erased and is located in the extension of the hollow tubular body 2.

Soit antérieurement, simultanément ou postérieurement au sertissage ou matriçage final, on procède à la soudure du film thermofusible 31, cette soudure pouvant être réalisée par conduction, haute-fréquence, ultra-sons, au laser ou par des moyens mécaniques tels que des molettes chauffantes, des molettes pivotantes ou autres.Either before, simultaneously or after the final crimping or stamping, the hot-melt film 31 is welded, this welding being able to be carried out by conduction, high-frequency, ultrasound, by laser or by mechanical means such as heating knobs , swivel wheels or the like.

Ainsi, on obtient quatre zones d'interaction entre le corps tubulaire creux 2 et le fond 4 et/ou le couvercle 6. La première zone 41 agissant contre l'humidité et représentant une résistance à l'arrachement de l'ordre de 15% par rapport à la résistance totale est située à l'extrémité 3, 5 du corps creux 2, la seconde zone 42 représentant une résistance à l'arrachement de l'ordre de 5% par rapport à la résistance totale est située sur le chant 38 du corps creux 2, la troisième zone 43 concerne l'étanchéité et elle est formée par le joint 34 et la quatrième zone 44 représentant une résistance à l'arrachement de l'ordre de 80% par rapport à la résistance totale est située à l'emplacement de la collerette 17.Thus, four interaction zones are obtained between the hollow tubular body 2 and the bottom 4 and / or the cover 6. The first zone 41 acting against humidity and representing a tear resistance of the order of 15% relative to the total resistance is located at the end 3, 5 of the hollow body 2, the second zone 42 representing a tear resistance of the order of 5% relative to the total resistance is located on the edge 38 of the hollow body 2, the third zone 43 relates to the seal and it is formed by the seal 34 and the fourth zone 44 representing a tear resistance of the order of 80% relative to the total resistance is located at l location of the collar 17.

Claims (11)

1. Container with inset bottom and/or lid, more especially packaging box for food, chemical, industrial or other products, particularly for pressurized products or products necessitating thermal processing such as pasteurization or sterilization and consisting of a composite tubular body (2), a base (4) and/or a lid (6) made up of a sealing flange (16), a collar (17) and an annular rim (19) curving back from the circumference of the ends (3) and (5) of the tubular body (2), the said container additionally comprising a thermoplastic connection (31) for fastening the bottom
(4) and/or the lid (6) extending over the whole height of the collar (17), bestriding the upper and/or lower edges (38) of the tubular body (2) and covering the ends of the latter to a depth corresponding to the height of the curved end (22) of the annular rim (19) of the bottom (4) and/or of the lid (6), characterized by the fact that the annular rim (19) of the bottom (4) and/or of the lid (6) has an outer circumference receding from the outer circumference (11) of the tubular body (2), the edge (33) of the said annular rim (19) engaging in a peripheral groove resulting from local crushing of the outer circumference (11) of the tubular body (2) by the said annular rim (19).
2. Container in accordance with claim 1, characterized by the fact that the thermoplastic connection is a thermoplastic film (31) applied to the food resin (30) covering the inside face (29) in contact with the contents of the strip metal (28) forming the bottom (4) and/or the lid (6), such thermoplastic film (31) extending over the whole height of the collar (17) and over the under face (32) of the annular rim (19) as far as the edge (33) of the latter.
3. Container in accordance with claim 1, characterized by the fact that the bottom (4) and/or the lid (6) include a sealing joint (34) placed in the inside angle (35) formed by the collar (17) and the annular rim (19) and applied against the thermoplastic film (31), such joint extending aver a certain width (36) on the annular rim (19) and over a certain height (37) on the collar (17).
4. Container in accordance with claim 3, characterized by the fact that the sealing joint (34) is of a height greater than its width.
5. Container in accordance with claim 1, characterized by the fact that after insetting, it includes four zones of interaction between the tubular body (2) and the bottom (4) and/or the lid (6).
6. Container in accordance with claim 5, characterized by the fact that the first zone (41) counteracting humidity and representing a resistance to wrenching of about 15% as compared with total resistance to wrenching, is situated at the outside end (3, 4) of the body (2).
7. Container in accordance with claim 5, characterized by the fact that the second zone (42), representing a resistance to wrenching of about 5% as compared with total resistance to wrenching, is situated on the edge (38) of the tubular body (2).
8. Container in accordance with claim 5, characterized by the fact that the third zone (43) is situated at the location of the sealing joint (34).
9. Container in accordance with claim 5, characterized by the fact that the fourth zone (44), representing a resistance to wrenching of about 80% of the total resistance to wrenching, is situated at the location of the collar (17).
10. Process of manufacture of a container in accordance with claim 1, more expecially of fixing a base and/or a lid on a tubular body by insetting or stamping, characterized by the fact that at one at least of the ends (3, 5) of the tubular body (2), a splayed neck (15) is created, the inside face (29) of a metal strip (28) is coated with a food resin (30), such strip (28) is stamped to obtain a base (4) and/or a lid (6) fitting the shape of the cross-section of the tubular body (2) and forming a sealing flange (16), a collar (17) and an annular rim (19), a thermoplastic film (31) is applied to the food resin (30) at the level of the outside face of the collar (17) and the inside face (32) of the annular rim (19), a sealing joint (34) is placed in the inside angle (35) formed by the collar (17) and the annular rim (19), the collar (17) is introduced into the splayed neck (15) of the tubular body (2), then the base (4) and/or lid (6) is fixed by engaging the edge (33) of the annular rim (19) in a peripheral groove resulting from a local crushing of the outer circumference of the tubular body (2) by the said annular rim, such fixing being effected in such a way that the annular rim (19) has an outside circumference which is recessed in relation to the outside circumference of the tubular body (2).
EP83440052A 1982-11-08 1983-10-19 Container with seamed top and/or bottom covers, and method of manufacturing it Expired EP0108701B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83440052T ATE20224T1 (en) 1982-11-08 1983-10-19 CONTAINER WITH BOTTOM AND/OR LID FIXED BY SEALING AND PROCESS FOR ITS MANUFACTURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8218837 1982-11-08
FR8218837A FR2535684B1 (en) 1982-11-08 1982-11-08 CONTAINER WITH BOTTOM AND / OR CRIMPED LID AND MANUFACTURING METHOD THEREOF

Publications (2)

Publication Number Publication Date
EP0108701A1 EP0108701A1 (en) 1984-05-16
EP0108701B1 true EP0108701B1 (en) 1986-06-04

Family

ID=9279058

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83440052A Expired EP0108701B1 (en) 1982-11-08 1983-10-19 Container with seamed top and/or bottom covers, and method of manufacturing it

Country Status (5)

Country Link
EP (1) EP0108701B1 (en)
JP (1) JPS59103835A (en)
AT (1) ATE20224T1 (en)
DE (1) DE3363950D1 (en)
FR (1) FR2535684B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9023445B2 (en) 2011-10-14 2015-05-05 Kellogg North America Company Composite containers for storing perishable products

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Publication number Priority date Publication date Assignee Title
FR2716175A1 (en) * 1994-02-17 1995-08-18 Villefranche Sa Cartonnages Te New packaging for the packaging of a bottle, and method of manufacturing said packaging.
DE4446393C1 (en) 1994-12-23 1995-12-21 Schmalbach Lubeca Applying sealing cpd. to can body and lid before making double seam joint
AU2002215855A1 (en) * 2000-11-17 2002-05-27 Ball Packaging Europe Gmbh Long term stability of fillings in a two piece beverage container

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US2306255A (en) * 1940-10-22 1942-12-22 Hans A Eggers Container structure
US2362846A (en) * 1941-09-26 1944-11-14 Continental Can Co Sheet metal container
US2986319A (en) * 1957-10-02 1961-05-30 American Can Co Venting container and method of making same
CH432358A (en) * 1964-10-14 1967-03-15 Hesser Ag Maschf Packaging containers, in particular for liquids
US3580464A (en) * 1969-03-17 1971-05-25 Owens Illinois Inc Hermetically sealed composite container
US3774560A (en) * 1971-08-12 1973-11-27 Nat Can Corp Method of sealing container seams
FR2320867A1 (en) * 1975-08-11 1977-03-11 American Can Co Beer can sealing end - has edges rolled over sealing ring to give double lock
CA1133837A (en) * 1978-05-24 1982-10-19 Kazuaki Fukuoka Containers for beverages and the like
US4270475A (en) * 1979-07-19 1981-06-02 Sonoco Products Company Method of forming a flush-sided container
FR2473994A1 (en) * 1980-01-21 1981-07-24 Owens Illinois Inc Hermetically seamed composite container - has metal ends and fibre composition body joined by double seams

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9023445B2 (en) 2011-10-14 2015-05-05 Kellogg North America Company Composite containers for storing perishable products

Also Published As

Publication number Publication date
DE3363950D1 (en) 1986-07-10
FR2535684A1 (en) 1984-05-11
ATE20224T1 (en) 1986-06-15
JPS59103835A (en) 1984-06-15
EP0108701A1 (en) 1984-05-16
JPH0236458B2 (en) 1990-08-17
FR2535684B1 (en) 1985-12-06

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