EP2511193B1 - Outer wrapping for item packaged in primary packaging - Google Patents

Outer wrapping for item packaged in primary packaging Download PDF

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Publication number
EP2511193B1
EP2511193B1 EP20120163798 EP12163798A EP2511193B1 EP 2511193 B1 EP2511193 B1 EP 2511193B1 EP 20120163798 EP20120163798 EP 20120163798 EP 12163798 A EP12163798 A EP 12163798A EP 2511193 B1 EP2511193 B1 EP 2511193B1
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EP
European Patent Office
Prior art keywords
packaging
outer packaging
assembly according
film
welds
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EP20120163798
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German (de)
French (fr)
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EP2511193A1 (en
Inventor
Yannick Guinard
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Charal SAS
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Charal SAS
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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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/003—Articles enclosed in rigid or semi-rigid containers, the whole being wrapped
    • 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
    • B65D2205/00—Venting means
    • B65D2205/02—Venting holes

Definitions

  • the technical field of the invention is that of opening devices for removing the contents of a package. Typically, these devices are added or incorporated during packaging and more particularly when making overpacks, particularly when it comes to packaging an already packed food product.
  • the invention thus thus object an overpack for food item already packaged, provided with a quick opening device.
  • the problem posed by the opening devices for packaging has already given rise to several solutions, in particular that of placing a tear initiation on a weld of a package and / or an overpack.
  • the patent application is also known WO 2008/144059 A1 which discloses a packaging article having initiators facilitating manual tearing for opening without the use of a scissors blade or the like.
  • Another solution is of course to use tools such as scissors or a knife.
  • the invention aims to overcome the drawbacks of the state of the art, in particular the bending problems of an overpack for already packaged food items, without also generating significant additional cost for the implementation of an industrial process associated manufacturing, while adding an easy opening creating an opening indicator and allowing to widely tear the overpack to extract the primary packaging.
  • the invention relates to an assembly comprising the features defined in claim 1.
  • flexible material film preferably a film of material whose maximum thickness is 500 microns, and more preferably 100 microns.
  • an overpack is defined as a secondary packaging that comes in addition to a primary packaging. Most often the primary packaging is used for packaging purposes and the secondary packaging is used for commercial purposes.
  • the weakening line will thus be able to fulfill a dual function: to allow, through its degassing slots, release the air that could be trapped in the overpack and define a priming area opening of the latter.
  • its implementation in an industrial process and in particular in the production line does not involve expensive step or adding material.
  • the main surface of the overwrap being delimited at the periphery by closing welds, said closure welds have marginal surfaces extending outside said main surface.
  • the weakening line being located on said main surface, it ensures its degassing function through its degassing slots through which the air trapped in the overpack assembly can escape.
  • a weakening line as described makes it possible to constitute an opening witness. Indeed, such a line of weakness arranged on a flexible film makes it easier to tear the overpack of the assembly to remove the food item (or culinary) manually, easily and quickly.
  • the weakening line is curved to border a bearing surface for a finger of a user, in order to facilitate the manual opening of the overpack.
  • the curved shape of the weakening line will have for main effect of facilitating the tearing of the overpack and thus its opening.
  • the curve described by the line of weakness substantially follows the contours of the finger of the user, this facilitating the opening of such an overpack.
  • This characteristic is all the more advantageous as the said curve described by the line of weakness has a radius of curvature of between 15 mm and 25 mm.
  • the number of degassing slots is two and the number of attachment bridges is one.
  • all or part of the curve bordering the bearing surface has an axis of symmetry adapted to guide a tear along said axis of symmetry substantially perpendicular to the outer periphery.
  • the tearing of the overpack is optimal and allows a transverse opening of the overpack.
  • the weakening line is devoid of anti-tearing means. The pulling is thus facilitated to remove the primary packaging, the overpack is not reusable.
  • the overpack is made of polyethylene terephthalate (PET) or metallized PET or polypropylene (PP) or metallized PP and polyethylene (PE).
  • PET polyethylene terephthalate
  • PP polypropylene
  • PE polyethylene
  • the invention also relates to a method of manufacturing an overpack as described above, comprising the steps defined in claim 9. This avoids the realization of an inflated bag after the closing weld of the overpack.
  • the step of producing the weakening line is a punching step. This process is inexpensive and facilitates getting the desired shape.
  • the figure 1 shows a schematic front view of an overwrap 1 which completely surrounds a food grade primary package in which a food article 2 is conditioned.
  • Article 2 is not shown in all the figures .
  • the overpack is tearable to be ripped off and discarded. It is not reusable once opened.
  • the primary packaging 20 either, at least in the preferred solution where initially, it is hermetically closed so as to allow the preservation of the food item 2 which is enclosed therein.
  • the overwrap 1 shown comprises a film 3 of flexible material and has three sealing welds 4 delimiting an outer periphery 5 of a main surface 6 of the overwrap 1 inside which the wrapped article 2 is wrapped. Of these three welds 4, two are arranged transversely and one is arranged longitudinally. Each of the welds defines a substantially rectangular strip. The entire perimeter of the overpack is thus lined.
  • the overpack is preferably a secondary packaging for printing text and / or images for commercial purposes.
  • the flexible film 3 consists of metallized polyethylene terephthalate (PET) and polyethylene (PE).
  • the primary packaging 20 is in this example a vacuum tray in which an article 2 is conditioned.
  • the overwrap 1 has a weakening line 7 located on the main surface 6.
  • This weakening line 7 here has four degassing slots 8 separated from each other by a fastening bridge 9 of material.
  • each of the four degassing slots 8 has a length equal to 10 mm and each of the fastening bridges has a length equal to 2.5 mm.
  • the main surface 6 is subdivided into a main front surface 6a and a rear main surface 6b respectively located above and below the primary package 20.
  • the figure 2 shows in profile view the assembly comprising the primary packaging 20 where the food item 2 is conditioned and the overwrap 1.
  • the production line comprises means for conveying the overwrapping film 3. Said conveying means guide the film 3 to a shaper 12 and then to rotating jaws 13.
  • the shaper 12 is a tubular mechanical part comprising on its inner surface rails capable of guiding the lateral edges 14 of the film 3 in order to bring them against each other in order to create a "tunnel" of film 3. Furthermore, the guides convey articles 2, packaged in primary packaging 20, in the center of this "tunnel" of film 3. The lateral edges 14 are then brought against each other under the articles 2 packaged in primary packaging 20 where they are welded together. A heating wheel creates a longitudinal weld 4 on each overpack.
  • the rotary jaws are controlled by markers 15 located on a lateral edge 14 of the film 3. These markers are arranged in a uniformly spaced manner and serve as markers for performing the transverse welds. These markers are also used as markers for positioning the line of weakness 7 on said package, this step (not shown here) being placed upstream of the step of placing the overpack 1 around the article 2 conditioned in the packaging.
  • primary packaging 20
  • the figure 4 shows a diagram of an overwrap film sample 3 according to one embodiment.
  • a film portion 3 packaged in the form of a roll feeding the manufacturing method as described figure 3 is illustrated in this figure a film portion 3 packaged in the form of a roll feeding the manufacturing method as described figure 3 .
  • the sample illustrated here has a film 3 of flexible material capable of forming at least two overpacks, each having a weakening line 7 and being delimited on the one hand by the lateral edges 14 of said film 3 and on the other hand by the markers 15 forming the marks before welding and disconnection of the overpacks on the production line.
  • FIGS. 5, 6, 7 and 8 show diagrams of a punch 16 adapted to create a weakening line on an overwrap according to one embodiment, each of the figures having different views, respectively in a right, front, top and perspective view.
  • the punch 16 comprises a main body 17 on which is disposed a blade 18.
  • the blade 18 has a shape complementary to the curve defining the weakening line 7.
  • the blade 18 makes it possible to create the slots 8 for degassing by punching.
  • the weakening line 7 is thus preferably rounded or arcuate. Its tearing, and the nature of the film 3, cause it to tear beyond the limits of the slot, a priori in the continuity of the curvature of line 7 until clear access to the primary packaging 20 The overpack is then discarded. It is not reusable.
  • the main body 17 has a length L of 25 mm, a width I of 10 mm and a height h of 17 mm.
  • the blade 18, with a thickness equal to 1.5 mm, has a curvature radius curve R c equal to 15 mm.
  • the blade is provided more precisely with two lamellae, each of the lamellae being able to create a degassing slot 8 in the film 3 of the overwrap 1.
  • the weakening line 7 thus obtained by this punch 16 has two degassing slots 8 spaced by an attachment bridge 9, the spacing between the two lamellae forming said attachment bridge 9 during the punching step. This spacing here measures 2.5 mm.
  • each lamella of the blade 18 has an arcuate portion of radius equal to the radius of curvature R c , said arc of the lamella forming an angle ⁇ of 45 ° with respect to the axis of symmetry and continuing on a rectilinear portion P R measuring 5 mm.
  • the curve thus obtained thus has an arcuate portion of the curvature forming an angle ⁇ of 90 °, the ends of this circular arc being each continued by a rectilinear portion P R tangentially to said circular arc of the curvature.
  • FIGS 9, 10, 11 and 12 show diagrams of a punch 16 adapted to create a line of weakening on an overpack according to another mode of embodiment, each of the figures having different views, respectively in right, front, top and perspective view.
  • FIGS. 13a, 13b and 13c show schemes of variants of lines of weakness 7 according to particular embodiments.
  • the figure 13a illustrates a weakening line comprising four degassing slots 8 and three fastening bridges 9.
  • the curve described by the weakening line 7 has a radius of curvature Rc equal to 15 mm, the two central slots being placed on a virtual circle of radius equal to the radius of curvature R c , the two lateral degassing slots 8 being each line tangent to said virtual circle.
  • the curve borders a bearing surface 10 for a user's finger.
  • the figure 13b has a weakening line comprising two degassing slots 8 and a single fastening bridge 3.
  • the curve illustrated here is a semi-circular curve and bordered a bearing surface 10.
  • Curve 13c illustrates a weakening line 7 comprising four degassing slots 8 and three attachment bridges 9 and whose "S" shape allows the curve formed by the weakening line 7 to border two bearing surfaces. 10.
  • the weakening line may have a curve for defining a plurality of bearing surfaces, each of the curvatures bordering the bearing surfaces may also be of different radii of curvature.

Description

DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION

Le domaine technique de l'invention est celui des dispositifs d'ouverture servant à retirer le contenu d'un emballage. Typiquement, ces dispositifs sont, ajoutés ou incorporés lors du conditionnement et plus particulièrement lors de la confection des suremballages, en particulier lorsqu'il s'agit de conditionner un produit culinaire déjà emballé. L'invention a donc ainsi objet un suremballage pour article alimentaire déjà emballé, muni d'un dispositif d'ouverture rapide.The technical field of the invention is that of opening devices for removing the contents of a package. Typically, these devices are added or incorporated during packaging and more particularly when making overpacks, particularly when it comes to packaging an already packed food product. The invention thus thus object an overpack for food item already packaged, provided with a quick opening device.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

La problématique posée par les dispositifs d'ouverture pour emballage a déjà suscité plusieurs solutions, notamment celle consistant à placer une amorce de déchirure sur une soudure d'un emballage et/ou d'un suremballage.The problem posed by the opening devices for packaging has already given rise to several solutions, in particular that of placing a tear initiation on a weld of a package and / or an overpack.

Dans le brevet US 6,126,317 , il est proposé de conditionner un article alimentaire dans un emballage primaire. Durant ouverture, le produit alimentaire ne doit pas être renversé et après l'ouverture l'emballage primaire peut être refermé. Son moyen d'ouverture est donc guidé et le degré d'ouverture limité. Ceci ne convient pas s'il faut sortir un emballage hors d'un suremballage, cela d'autant moins si ce dernier est non réutilisable.In the patent US 6,126,317 it is proposed to package a food item in a primary package. During opening, the food product must not be spilled and after opening the primary packaging can be closed. Its opening means is thus guided and the degree of opening limited. This is not appropriate if you have to take a package out of an overpack, all the less if it is not reusable.

On connaît également la demande de brevet WO 2008/144059 A1 qui décrit un article d'emballage présentant des initiateurs facilitant un déchirement manuel permettant l'ouverture sans utilisation d'une lame de ciseaux ou autre.The patent application is also known WO 2008/144059 A1 which discloses a packaging article having initiators facilitating manual tearing for opening without the use of a scissors blade or the like.

Une autre solution est bien sûr d'utiliser des outils tels des ciseaux ou un couteau.Another solution is of course to use tools such as scissors or a knife.

Un autre aspect du problème de certains suremballages est lié au fait que fermés, ils sont bombés. Si lors du suremballage d'un tel article il n'est pas prévu de dégazage, une certaine quantité d'air demeure emprisonnée dans le suremballage. Or, le dégazage est difficile à mettre en oeuvre dans la chaine industrielle. Le consommateur peut estimer que l'effet bombé résulte d'une date de péremption proche dans le temps voir dépassée, ce qui n'est pas valorisant.Another aspect of the problem of some overpacks is related to the fact that closed, they are bulging. If during the overpack of such an article there is no provision for degassing, a certain amount of air remains trapped in the overpack. However, degassing is difficult to implement in the industrial chain. The consumer can estimate that the curved effect results from an expiry date close in time or exceeded, which is not rewarding.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

L'invention vise à remédier aux inconvénients de l'état de la technique, en particulier aux problèmes de bombage d'un suremballage pour des articles alimentaires déjà emballés, sans par ailleurs engendrer de surcoût important pour la mise en oeuvre d'un procédé industriel de fabrication associé, tout en ajoutant une ouverture aisée créant un témoin d'ouverture et permettant de largement déchirer le suremballage pour en extraire l'emballage primaire.The invention aims to overcome the drawbacks of the state of the art, in particular the bending problems of an overpack for already packaged food items, without also generating significant additional cost for the implementation of an industrial process associated manufacturing, while adding an easy opening creating an opening indicator and allowing to widely tear the overpack to extract the primary packaging.

Pour cet objectif et selon un premier aspect, l'invention concerne un ensemble comprenant les caractéristiques définies à la revendication 1.For this purpose and according to a first aspect, the invention relates to an assembly comprising the features defined in claim 1.

Il est entendu d'une part, par le vocable « film de matière souple», de préférence un film de matière dont l'épaisseur maximale est de 500 µm, et de préférence encore 100 µm.It is understood on the one hand, by the term "flexible material film", preferably a film of material whose maximum thickness is 500 microns, and more preferably 100 microns.

Il est également rappelé qu'un suremballage est défini comme un emballage secondaire venant en supplément d'un emballage primaire. Le plus souvent l'emballage primaire est utilisé à des fins de conditionnement et l'emballage secondaire est utilisé à des fins commerciales.It is also recalled that an overpack is defined as a secondary packaging that comes in addition to a primary packaging. Most often the primary packaging is used for packaging purposes and the secondary packaging is used for commercial purposes.

La ligne d'affaiblissement va ainsi pouvoir remplir une double fonction : permettre, de par ses fentes de dégazage, de libérer l'air qui pourrait être emprisonné dans le suremballage et définir une zone d'amorce d'ouverture de ce dernier. En outre, sa mise en oeuvre dans un processus industriel et en particulier dans la chaîne de fabrication n'implique pas d'étape coûteuse ni d'ajout de matière.The weakening line will thus be able to fulfill a dual function: to allow, through its degassing slots, release the air that could be trapped in the overpack and define a priming area opening of the latter. In addition, its implementation in an industrial process and in particular in the production line does not involve expensive step or adding material.

De plus, la surface principale du suremballage étant délimitée en périphérie par des soudures de fermeture, lesdites soudures de fermeture présentent des surfaces marginales s'étendant à l'extérieur de ladite surface principale. La ligne d'affaiblissement étant située sur ladite surface principale, elle permet d'assurer sa fonction de dégazage par l'intermédiaire de ses fentes de dégazage à travers lesquelles l'air emprisonné dans le suremballage de l'ensemble peut s'échapper.In addition, the main surface of the overwrap being delimited at the periphery by closing welds, said closure welds have marginal surfaces extending outside said main surface. The weakening line being located on said main surface, it ensures its degassing function through its degassing slots through which the air trapped in the overpack assembly can escape.

Par ailleurs, une ligne d'affaiblissement telle que décrite permet de constituer un témoin d'ouverture. En effet, une telle ligne d'affaiblissement disposée sur un film souple permet de faciliter l'arrachage du suremballage de l'ensemble permettant d'y retirer l'article alimentaire (ou culinaire) manuellement, facilement et rapidement.Moreover, a weakening line as described makes it possible to constitute an opening witness. Indeed, such a line of weakness arranged on a flexible film makes it easier to tear the overpack of the assembly to remove the food item (or culinary) manually, easily and quickly.

Le suremballage de l'ensemble entourant complètement l'article culinaire emballé et conditionné dans l'emballage primaire, cela permet de dissocier précisément l'emballage primaire pour le conditionnement dudit suremballage.The overwrapping of the assembly completely surrounding the culinary article packaged and packaged in the primary packaging, this makes it possible to precisely separate the primary packaging for the packaging of said overpack.

Avantageusement, la ligne d'affaiblissement est courbe pour border une surface d'appui pour un doigt d'un utilisateur, ceci afin de faciliter l'ouverture manuelle du suremballage. Ainsi, le fait pour un utilisateur d'appuyer sur la surface d'appui définie par la courbure de la ligne d'affaiblissement va rompre le ou les pont(s) d'attache, la forme courbée de la ligne d'affaiblissement aura pour effet principal de faciliter l'arrachage du suremballage et donc son ouverture.Advantageously, the weakening line is curved to border a bearing surface for a finger of a user, in order to facilitate the manual opening of the overpack. Thus, the fact that a user press on the support surface defined by the curvature of the weakening line will break the bridge (s) of attachment, the curved shape of the weakening line will have for main effect of facilitating the tearing of the overpack and thus its opening.

De manière avantageuse, la courbe décrite par la ligne d'affaiblissement épouse sensiblement les contours du doigt de l'utilisateur, ceci facilitant l'ouverture d'un tel suremballage. Cette caractéristique est d'autant plus avantageuse que ladite courbe décrite par la ligne d'affaiblissement présente un rayon de courbure compris entre 15 mm et 25 mm.Advantageously, the curve described by the line of weakness substantially follows the contours of the finger of the user, this facilitating the opening of such an overpack. This characteristic is all the more advantageous as the said curve described by the line of weakness has a radius of curvature of between 15 mm and 25 mm.

De préférence, le nombre de fentes de dégazage est de deux et le nombre de ponts d'attache est de un.Preferably, the number of degassing slots is two and the number of attachment bridges is one.

Avantageusement, tout ou partie de la courbe bordant la surface d'appui présente un axe de symétrie apte à orienter un déchirement suivant ledit axe de symétrie sensiblement perpendiculaire à la périphérie extérieure. De cette manière, le déchirement du suremballage est optimal et permet une ouverture transversale du suremballage.Advantageously, all or part of the curve bordering the bearing surface has an axis of symmetry adapted to guide a tear along said axis of symmetry substantially perpendicular to the outer periphery. In this way, the tearing of the overpack is optimal and allows a transverse opening of the overpack.

Par ailleurs, la ligne d'affaiblissement est dépourvue de moyen anti-arrachement. L'arrachage est ainsi facilité pour y retirer l'emballage primaire, le suremballage n'étant pas réutilisable.Moreover, the weakening line is devoid of anti-tearing means. The pulling is thus facilitated to remove the primary packaging, the overpack is not reusable.

Selon d'autres caractéristiques particulières la ligne d'affaiblissement présente :

  • une longueur comprise entre 30 mm et 35 mm ; et/ou
  • des fentes de dégazage présentant une longueur comprise entre 10mmet12mm ; et/ou
  • un ou des pont(s) d'attache présentant une longueur comprise entre 2,5 mm et 3 mm.
According to other particular characteristics, the weakening line presents:
  • a length of between 30 mm and 35 mm; and or
  • degassing slots having a length of between 10mm and 12mm; and or
  • one or more fastening bridges (s) having a length of between 2.5 mm and 3 mm.

Avantageusement, le suremballage est en polyéthylène téréphtalate (PET) ou PET métallisé ou Polypropylène (PP) ou PP métallisé et Polyéthylène (PE).Advantageously, the overpack is made of polyethylene terephthalate (PET) or metallized PET or polypropylene (PP) or metallized PP and polyethylene (PE).

Par ailleurs, l'invention concerne également un procédé de fabrication d'un suremballage tel que décrit précédemment, comprenant les étapes définies à la revendication 9. On évite donc la réalisation d'un sac gonflé à l'issue de la soudure de fermeture du suremballage.Furthermore, the invention also relates to a method of manufacturing an overpack as described above, comprising the steps defined in claim 9. This avoids the realization of an inflated bag after the closing weld of the overpack.

Selon une autre caractéristique particulière, l'étape de réalisation de la ligne d'affaiblissement est une étape de poinçonnage. Ce processus est peu onéreux et facilite l'obtention de la forme souhaitée.According to another particular characteristic, the step of producing the weakening line is a punching step. This process is inexpensive and facilitates getting the desired shape.

BREVE DESCRIPTION DES FIGURESBRIEF DESCRIPTION OF THE FIGURES

D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit, en référence aux figures annexées, qui illustrent :

  • la figure 1, un schéma en vue de face d'un suremballage selon un mode de réalisation, ledit suremballage entourant complètement un article emballé ;
  • la figure 2, un schéma en vue de profil d'un suremballage selon ce même mode de réalisation, ledit suremballage entourant complètement un article emballé ;
  • la figure 3, un schéma d'un procédé de fabrication d'un suremballage procédé de suremballage d'un article emballé selon un mode de réalisation ;
  • La figure 4, un schéma d'un échantillon de film de suremballage selon un mode de réalisation, avant sa mise en place autour d'un article emballé;
  • les figures 5, 6, 7 et 8, des schémas d'un poinçon apte à créer un dispositif d'ouverture selon un mode de réalisation, chacune des figures présentant des vues différentes, respectivement en vue de droite, de face, de haut et en perspective ;
  • les figures 9, 10, 11 et 12, des schémas d'un poinçon apte à créer un dispositif d'ouverture selon un autre mode de réalisation, chacune des figures présentant des vues différentes, respectivement en vue de droite, de face, de haut et en perspective ;
  • les figures 13a, 13b et 13c, des schémas de variantes de lignes d'affaiblissement selon des modes particulier de réalisation.
Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures, which illustrate:
  • the figure 1 , a schematic front view of an overpack according to one embodiment, said overwrap completely surrounding a packaged article;
  • the figure 2 , a schematic view of an overpack according to this same embodiment, said overwrap completely surrounding a packaged article;
  • the figure 3 , a diagram of a method of manufacturing an overpack packaging method of overpacking a packaged article according to one embodiment;
  • The figure 4 a diagram of an overwrap film sample according to one embodiment, before it is placed around a packaged article;
  • the Figures 5, 6, 7 and 8 , diagrams of a punch adapted to create an opening device according to one embodiment, each of figures having different views respectively in right, front, top and perspective view;
  • the Figures 9, 10, 11 and 12 , diagrams of a punch adapted to create an opening device according to another embodiment, each of the figures having different views, respectively in a right, front, top and perspective view;
  • the Figures 13a, 13b and 13c , weakening line variant schemes according to particular embodiments.

Pour plus de clarté, les éléments identiques ou similaires sont repérés par des signes de référence identiques sur l'ensemble des figures.For the sake of clarity, identical or similar elements are marked with identical reference signs throughout the figures.

DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT

La figure 1 montre un schéma en vue de face d'un suremballage 1 qui entoure complètement un emballage primaire 20 de qualité alimentaire dans lequel est conditionné un article alimentaire 2. Pour des raisons de clarté, l'article 2 n'est pas illustré dans toutes les figures.The figure 1 shows a schematic front view of an overwrap 1 which completely surrounds a food grade primary package in which a food article 2 is conditioned. For the sake of clarity, Article 2 is not shown in all the figures .

Le suremballage est déchirable pour être arraché et jeté. Il n'est pas réutilisable une fois ouvert. L'emballage primaire 20 non plus, du moins dans la solution préférée où, initialement, il est hermétiquement fermé de sorte à permettre la conservation de l'article 2 alimentaire qui y est enfermé.The overpack is tearable to be ripped off and discarded. It is not reusable once opened. The primary packaging 20 either, at least in the preferred solution where initially, it is hermetically closed so as to allow the preservation of the food item 2 which is enclosed therein.

Le suremballage 1 figuré comprend un film 3 de matière souple et présente trois soudures 4 de fermeture délimitant une périphérie extérieure 5 d'une surface principale 6 du suremballage 1 à l'intérieur duquel l'article 2 emballé est enveloppé. Parmi ces trois soudures 4, deux sont disposées transversalement et une est disposée longitudinalement. Chacune des soudures définit une bande sensiblement rectangulaire. Tout le périmètre du suremballage est ainsi bordé.The overwrap 1 shown comprises a film 3 of flexible material and has three sealing welds 4 delimiting an outer periphery 5 of a main surface 6 of the overwrap 1 inside which the wrapped article 2 is wrapped. Of these three welds 4, two are arranged transversely and one is arranged longitudinally. Each of the welds defines a substantially rectangular strip. The entire perimeter of the overpack is thus lined.

Le suremballage est de préférence un emballage secondaire permettant l'impression d'un texte et/ou d'images à des fins commerciales. Dans ce mode de réalisation le film 3 souple est constitué de polyéthylène téréphtalate (PET) métallisé et de polyéthylène (PE).The overpack is preferably a secondary packaging for printing text and / or images for commercial purposes. In this embodiment the flexible film 3 consists of metallized polyethylene terephthalate (PET) and polyethylene (PE).

Par ailleurs, l'emballage primaire 20 est dans cet exemple une barquette sous vide dans laquelle est conditionné un article 2.In addition, the primary packaging 20 is in this example a vacuum tray in which an article 2 is conditioned.

Le suremballage 1 présente une ligne d'affaiblissement 7 située sur la surface principale 6. Cette ligne d'affaiblissement 7 présente ici quatre fentes 8 de dégazage séparées entre elles par un pont d'attache 9 de matière. Dans ce mode de réalisation chacune des quatre fentes 8 de dégazage présente une longueur égale à 10 mm et chacun des ponts d'attache présente une longueur égale à 2,5 mm.The overwrap 1 has a weakening line 7 located on the main surface 6. This weakening line 7 here has four degassing slots 8 separated from each other by a fastening bridge 9 of material. In this embodiment each of the four degassing slots 8 has a length equal to 10 mm and each of the fastening bridges has a length equal to 2.5 mm.

La surface principale 6 est subdivisée en une surface principale avant 6a et une surface principale arrière 6b, situées respectivement dessus et dessous l'emballage primaire 20.The main surface 6 is subdivided into a main front surface 6a and a rear main surface 6b respectively located above and below the primary package 20.

La figure 2 montre en vue de profil l'ensemble comprenant l'emballage primaire 20 où l'article 2 alimentaire est conditionné et le suremballage 1.The figure 2 shows in profile view the assembly comprising the primary packaging 20 where the food item 2 is conditioned and the overwrap 1.

Est représentée figure une mise en place de suremballages autour d'emballages primaires 20 où des articles 2 sont déjà hermétiquement conditionnés sur une chaine de production. Les suremballages présentent déjà à cette étape des lignes d'affaiblissement 7.Is shown figure an establishment of overpacks around primary packaging 20 where articles 2 are already hermetically packaged on a production line. Overpacks already have weakening lines at this stage 7.

La chaine de production comporte des moyens d'acheminement 11 du film 3 de suremballage Lesdits moyens d'acheminement guident le film 3 à un conformateur 12 puis à des mâchoires rotatives 13.The production line comprises means for conveying the overwrapping film 3. Said conveying means guide the film 3 to a shaper 12 and then to rotating jaws 13.

Le conformateur 12 est une pièce mécanique tubulaire comprenant sur sa surface interne des rails aptes à guider les bords latéraux 14 du film 3 afin de les amener l'un contre l'autre afin de créer un « tunnel » de film 3. Des moyens de guidage acheminent par ailleurs des articles 2, conditionnés dans des emballages primaires 20, au centre de ce « tunnel » de film 3. Les bords latéraux 14 sont alors amenés l'un contre l'autre sous les articles 2 conditionnés dans des emballages primaires 20 où ils sont soudés entre eux. Une roulette chauffante crée une soudure 4 longitudinale sur chaque suremballage.The shaper 12 is a tubular mechanical part comprising on its inner surface rails capable of guiding the lateral edges 14 of the film 3 in order to bring them against each other in order to create a "tunnel" of film 3. Furthermore, the guides convey articles 2, packaged in primary packaging 20, in the center of this "tunnel" of film 3. The lateral edges 14 are then brought against each other under the articles 2 packaged in primary packaging 20 where they are welded together. A heating wheel creates a longitudinal weld 4 on each overpack.

Les articles 2 conditionnés dans des emballages primaires 20, disposés dans un « tunnel » continu de film 3, sont alors guidés vers des mâchoires rotatives 13 qui ont pour rôle d'effectuer les soudures 4 latérales de chacun des suremballages 1, séparant ainsi les suremballages 1 entourant complètement les articles 2 conditionnés dans des emballages primaires 20.The articles 2 packaged in primary packs 20, arranged in a continuous "tunnel" of film 3, are then guided towards rotary jaws 13 whose function is to perform the lateral seams 4 of each of the overpacks 1, thus separating the overpacks. 1 completely surrounding the articles 2 packaged in primary packaging 20.

Par ailleurs, les mâchoires rotatives sont commandées par des marqueurs 15 situés sur un bord latéral 14 du film 3. Ces marqueurs sont disposés de manière uniformément espacés et servent de repères pour effectuer les soudures 4 transversales. Ces marqueurs sont également utilisés comme repères pour positionner la ligne d'affaiblissement 7 sur ledit emballage, cette étape (non représentée ici) se plaçant en amont de l'étape de mise en place du suremballage 1 autour de l'article 2 conditionné dans l'emballage primaire 20Furthermore, the rotary jaws are controlled by markers 15 located on a lateral edge 14 of the film 3. These markers are arranged in a uniformly spaced manner and serve as markers for performing the transverse welds. These markers are also used as markers for positioning the line of weakness 7 on said package, this step (not shown here) being placed upstream of the step of placing the overpack 1 around the article 2 conditioned in the packaging. primary packaging 20

La figure 4 montre un schéma d'un échantillon de film 3 de suremballage 1 selon un mode de réalisation.The figure 4 shows a diagram of an overwrap film sample 3 according to one embodiment.

Plus précisément, est illustrée sur cette figure une portion de film 3 conditionnée sous forme de rouleau alimentant le procédé de fabrication tel que décrit figure 3. L'échantillon ici illustré présente un film 3 de matière souple apte à former au moins deux suremballages, chacun comportant une ligne d'affaiblissement 7 et étant délimité d'une part, par les bords latéraux 14 dudit film 3 et, d'autre part, par les marqueurs 15 formant les repères avant soudure et désolidarisation des suremballages sur la chaine de production.More specifically, is illustrated in this figure a film portion 3 packaged in the form of a roll feeding the manufacturing method as described figure 3 . The sample illustrated here has a film 3 of flexible material capable of forming at least two overpacks, each having a weakening line 7 and being delimited on the one hand by the lateral edges 14 of said film 3 and on the other hand by the markers 15 forming the marks before welding and disconnection of the overpacks on the production line.

Les figures 5, 6, 7 et 8 montrent des schémas d'un poinçon 16 apte à créer une ligne d'affaiblissement sur un suremballage selon un mode de réalisation, chacune des figures présentant des vues différentes, respectivement en vue de droite, de face, de haut et en perspective.The Figures 5, 6, 7 and 8 show diagrams of a punch 16 adapted to create a weakening line on an overwrap according to one embodiment, each of the figures having different views, respectively in a right, front, top and perspective view.

Le poinçon 16 comporte un corps principal 17 sur lequel est disposée une lame 18. La lame 18 présente une forme complémentaire à la courbe définissant la ligne d'affaiblissement 7. La lame 18 permet de créer les fentes 8 de dégazage par poinçonnage.The punch 16 comprises a main body 17 on which is disposed a blade 18. The blade 18 has a shape complementary to the curve defining the weakening line 7. The blade 18 makes it possible to create the slots 8 for degassing by punching.

La ligne d'affaiblissement 7 est ainsi de préférence arrondie ou en arc. Son déchirement, et la nature du film 3, font qu'il entraine un déchirement au delà des limites de la fente, a priori dans la continuité de la courbure de a ligne 7 jusqu'à dégager l'accès à l'emballage primaire 20. Le suremballage est alors jeté. Il n'est pas réutilisable.The weakening line 7 is thus preferably rounded or arcuate. Its tearing, and the nature of the film 3, cause it to tear beyond the limits of the slot, a priori in the continuity of the curvature of line 7 until clear access to the primary packaging 20 The overpack is then discarded. It is not reusable.

En particulier dans ce mode de réalisation, le corps principal 17 présente une longueur L de 25 mm, une largeur I de 10 mm et une hauteur h de 17 mm.In particular in this embodiment, the main body 17 has a length L of 25 mm, a width I of 10 mm and a height h of 17 mm.

En outre, la lame 18, d'épaisseur e égale à 1,5 mm, présente une courbe de rayon de courbure Rc égal à 15 mm. Par ailleurs la lame est munie plus précisément de deux lamelles, chacune des lamelles étant apte à créer une fente 8 de dégazage dans le film 3 du suremballage 1. La ligne d'affaiblissement 7 ainsi obtenue par ce poinçon 16 présente deux fentes 8 de dégazage espacées par un pont d'attache 9, l'espacement entre les deux lamelles formant ledit pont d'attache 9 lors de l'étape de poinçonnage. Cet espacement mesure ici 2,5 mm.In addition, the blade 18, with a thickness equal to 1.5 mm, has a curvature radius curve R c equal to 15 mm. Furthermore, the blade is provided more precisely with two lamellae, each of the lamellae being able to create a degassing slot 8 in the film 3 of the overwrap 1. The weakening line 7 thus obtained by this punch 16 has two degassing slots 8 spaced by an attachment bridge 9, the spacing between the two lamellae forming said attachment bridge 9 during the punching step. This spacing here measures 2.5 mm.

La courbe décrite par la lame présente une symétrie par rapport à un axe de référence Δ, le centre C du cercle virtuel de rayon de courbure Rc étant un point de l'axe de symétrie Δ. Ainsi chaque lamelle de la lame 18 présente une portion en arc de cercle de rayon égal au rayon de courbure Rc, ledit arc de cercle de la lamelle formant un angle α de 45° par rapport à l'axe de symétrie et se poursuivant sur une portion rectiligne PR mesurant 5 mm. La courbe ainsi obtenue présente donc une portion en arc de cercle de la courbure formant un angle β de 90°, les extrémités de cet arc de cercle se poursuivant chacune par une portion rectiligne PR tangentiellement audit arc de cercle de la courbure.The curve described by the blade has a symmetry with respect to a reference axis Δ, the center C of the virtual circle of radius of curvature R c being a point of the axis of symmetry Δ. Thus each lamella of the blade 18 has an arcuate portion of radius equal to the radius of curvature R c , said arc of the lamella forming an angle α of 45 ° with respect to the axis of symmetry and continuing on a rectilinear portion P R measuring 5 mm. The curve thus obtained thus has an arcuate portion of the curvature forming an angle β of 90 °, the ends of this circular arc being each continued by a rectilinear portion P R tangentially to said circular arc of the curvature.

Les figures 9, 10, 11 et 12 montrent des schémas d'un poinçon 16 apte à créer une ligne d'affaiblissement sur un suremballage selon un autre mode de réalisation, chacune des figures présentant des vues différentes, respectivement en vue de droite, de face, de haut et en perspective.The Figures 9, 10, 11 and 12 show diagrams of a punch 16 adapted to create a line of weakening on an overpack according to another mode of embodiment, each of the figures having different views, respectively in right, front, top and perspective view.

Les figures 13a, 13b et 13c montrent des schémas de variantes de lignes d'affaiblissement 7 selon des modes particulier de réalisation.The Figures 13a, 13b and 13c show schemes of variants of lines of weakness 7 according to particular embodiments.

La figure 13a illustre une ligne d'affaiblissement comportant quatre fentes 8 de dégazage et trois ponts d'attache 9. De plus la courbe décrite par la ligne d'affaiblissement 7 présente un rayon de courbure Rc égal à 15 mm, les deux fentes centrales étant placées sur un cercle virtuel de rayon égal au rayon de courbure Rc, les deux fentes 8 de dégazage latérales étant chacune des droites tangentes audit cercle virtuel. En outre, la courbe borde une surface d'appui 10 pour un doigt d'un utilisateur.The figure 13a illustrates a weakening line comprising four degassing slots 8 and three fastening bridges 9. Moreover, the curve described by the weakening line 7 has a radius of curvature Rc equal to 15 mm, the two central slots being placed on a virtual circle of radius equal to the radius of curvature R c , the two lateral degassing slots 8 being each line tangent to said virtual circle. In addition, the curve borders a bearing surface 10 for a user's finger.

La figure 13b présente une ligne d'affaiblissement comportant deux fentes 8 de dégazage et un unique pont d'attache 3. La courbe ici illustrée est une courbe semi circulaire et borde une surface d'appui 10.The figure 13b has a weakening line comprising two degassing slots 8 and a single fastening bridge 3. The curve illustrated here is a semi-circular curve and bordered a bearing surface 10.

La courbe 13c illustre une ligne d'affaiblissement 7 comportant quatre fentes 8 de dégazage et trois ponts d'attache 9 et dont la forme en « S » permet à la courbe formée par la ligne d'affaiblissement 7 de border deux surfaces d'appui 10.Curve 13c illustrates a weakening line 7 comprising four degassing slots 8 and three attachment bridges 9 and whose "S" shape allows the curve formed by the weakening line 7 to border two bearing surfaces. 10.

De nombreuses modifications peuvent être apportées au mode de réalisation décrit précédemment sans sortir du cadre de l'invention.Many modifications can be made to the embodiment described above without departing from the scope of the invention.

Ainsi le nombre de fentes de dégazage et de ponts d'attache n'est pas exhaustif, de même que le nombre de lignes d'affaiblissement sur un même suremballage.Thus the number of degassing slots and fastening bridges is not exhaustive, as the number of weakening lines on the same overpack.

Par ailleurs, la ligne d'affaiblissement peut présenter une courbe permettant de définir plusieurs surfaces d'appui, chacune des courbures bordant les surfaces d'appui pouvant également être de rayons de courbure différents.Furthermore, the weakening line may have a curve for defining a plurality of bearing surfaces, each of the curvatures bordering the bearing surfaces may also be of different radii of curvature.

Claims (10)

  1. Assembly comprising primary packaging (20) in which a food article (2) is packaged, said assembly comprising an outer packaging (1) completely surrounding the primary packaging (20) which is hermetically sealed, said outer packaging (1) being a film (3) of flexible material having closure welds (4) delimiting an outer periphery (5) of a main surface (6) of the outer packaging (1), said assembly being characterized in that the outer packaging has a line of weakness (7) located on the main surface (6), having at least two degassing slots (8) for releasing the air which may be trapped in said outer packaging (1), and not having an anti-tear means that is able to limit tearing of the film (3) beyond the limits of each slot, so that the outer packaging is not reusable after access to the primary packaging has been opened in order to remove the latter from the outer packaging, each of said degassing slots (8) being separated by at least one material attachment bridge (9).
  2. Assembly according to Claim 1, characterized in that the outer packaging has, in the region of the welds, marginal surfaces of the film extending on the outside of said main surface.
  3. Assembly according to Claim 1 or 2, characterized in that the primary packaging (20) is a vacuum-packed tray.
  4. Assembly according to any one of Claims 1 to 3, characterized in that the line of weakness (7) is curved so as to border a pressure surface (10) for a finger of a user.
  5. Assembly according to any one of Claims 1 to 4, characterized in that the curve described by the line of weakness (7) has a radius of curvature RC of between 15 mm and 25 mm.
  6. Assembly according to any one of Claims 1 to 5, characterized in that the number of degassing slots (8) is two and the number of attachment bridges is one.
  7. Assembly according to Claim 4 or Claim 4 and either one of Claims 5 and 6, characterized in that all or part of the curve bordering the pressure surface has an axis of symmetry (Δ) able to orient tearing along said axis of symmetry (Δ) approximately perpendicular to the outer periphery (5).
  8. Assembly according to any one of Claims 1 to 7, characterized in that it is made of PET or metallized PET or PP or metallized PP and PE material(s).
  9. Method for manufacturing an assembly according to any one of Claims 1 to 8, comprising, on a production line, a welding step for closing the outer packaging (1) so as to delimit an outer periphery (5) of a main surface (6) of the outer packaging (1), the manufacturing method being characterized in that, prior to the welding step, the film (3), with its degassing slots (8), is placed around the hermetically sealed primary packaging (20), then, during the welding operation, three said welds (4) are produced, two of said welds (4) being located respectively at two opposite transverse ends of the outer packaging and one being positioned longitudinally, between the two transverse welds, thus allowing the air contained inside the outer packaging (1) to escape towards the outside through the degassing slots (8), and producing the welds with marginal surfaces of the film extending on the outside of said main surface (6).
  10. Method for manufacturing an assembly according to Claim 9, characterized in that, during the welding operations, the film conveyed towards the production line is cut in the region of the marginal surfaces of these welds, thereby separating the manufactured assembly from the conveyed film.
EP20120163798 2011-04-11 2012-04-11 Outer wrapping for item packaged in primary packaging Active EP2511193B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1153158A FR2973784B1 (en) 2011-04-11 2011-04-11 OVERPACKING FOR CONDITIONED ARTICLE IN PRIMARY PACKAGING

Publications (2)

Publication Number Publication Date
EP2511193A1 EP2511193A1 (en) 2012-10-17
EP2511193B1 true EP2511193B1 (en) 2014-02-19

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EP20120163798 Active EP2511193B1 (en) 2011-04-11 2012-04-11 Outer wrapping for item packaged in primary packaging

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002529336A (en) * 1998-11-18 2002-09-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Package product having a foil wrapper provided with perforations for opening the foil wrapper
US6126317A (en) * 1999-08-11 2000-10-03 Pac One, Inc. Configuration resisting tear propagation in container sidewall
CN200964217Y (en) * 2006-09-22 2007-10-24 孙胜斌 Packaging bag
US10189621B2 (en) 2007-05-21 2019-01-29 Cryovac, Inc. Bag made from high-strength heat-shrinkable film exhibiting directional tear, and process utilizing same

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EP2511193A1 (en) 2012-10-17
FR2973784A1 (en) 2012-10-12

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