EP0744354A1 - Vacuum skin package - Google Patents

Vacuum skin package Download PDF

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Publication number
EP0744354A1
EP0744354A1 EP96420184A EP96420184A EP0744354A1 EP 0744354 A1 EP0744354 A1 EP 0744354A1 EP 96420184 A EP96420184 A EP 96420184A EP 96420184 A EP96420184 A EP 96420184A EP 0744354 A1 EP0744354 A1 EP 0744354A1
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EP
European Patent Office
Prior art keywords
plate
sheet
packaging
synthetic material
cardboard
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.)
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EP96420184A
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German (de)
French (fr)
Inventor
Marc Chauvet
Gérard Merle
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CENTRE EUROPE CONDITIONNEMENT CEC
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CENTRE EUROPE CONDITIONNEMENT CEC
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Publication date
Application filed by CENTRE EUROPE CONDITIONNEMENT CEC filed Critical CENTRE EUROPE CONDITIONNEMENT CEC
Publication of EP0744354A1 publication Critical patent/EP0744354A1/en
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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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • B65D75/305—Skin packages

Definitions

  • the present invention relates to a packaging for packaging products under a transparent film.
  • a first package known under the name of SKINPACK, comprises a cardboard plate whose face intended to receive the product is coated with a layer of synthetic material, such as a fusible varnish.
  • a sheet of synthetic material made of polyethylene or polyvinyl chloride, brought to a temperature at which the material is malleable, is applied to the face of the plate on which the product is deposited, while making a suction through the plate. Due to the malleable nature of the sheet, it follows the shape of the product and presses it against the plate, while adhering to it, taking into account the temperature at which it is located.
  • Another package known as a blister, comprises a cardboard plate coated with a fusible varnish and a shell of synthetic material, such as rigid polyvinyl chloride, molded to the shape of the product.
  • a first drawback of this technique lies in its cost of implementation, since it is necessary to have a mold per product to be packaged, this mold being intended to perform by thermoforming the molding of the plate of rigid synthetic material.
  • the product is not fixed on the plate, since there is a certain clearance between this one and the plastic shell, the visualization of the product through the shell is average, and it is not possible of touch it through the hull.
  • this packaging does not have a serious inviolability character due to the possibilities of delamination of the shell and the cardboard.
  • Another package comprises a lower shell in which a product is placed, a printed cardboard plate being placed without being fixed there, between two shells or between a shell and a plate made of synthetic material, for example polychloride of rigid vinyl, joined to each other at their periphery by a high frequency welding or thermal welding operation.
  • this packaging has the advantage of having an inviolability much higher than that of the previous packaging, it has the disadvantage of being very expensive to use, since it is necessary to have molds specific to each product to thermoform. the hulls, and it requires a sophisticated welding installation.
  • Other disadvantages of the packaging reside in the fact that it is bulky, that the plate does not adhere to the shells and that the packaged product does not adhere to the plate.
  • this packaging has all the advantages of the SKINPACK type packaging, since the plate adheres to the upper coating sheet, which intimately follows the product or products deposited on the plate, while having excellent inviolability, due to the peripheral weld produced between the upper and lower covering sheets.
  • the cardboard plate and the upper plastic film are not separable, which poses a recycling problem.
  • the object of the invention is to provide a packaging of the last type mentioned, that is to say offering the possibility of packaging numerous articles with the same tool, having good tamper-evident properties requiring the use of a cutting tool for recover the conditioned article or articles, and also allowing the recycling of these various constituent elements, in particular authorizing the separation of the cardboard and the two sheets of synthetic material which can then be treated separately as waste.
  • the cardboard plate is coated with an intermediate varnish, which adheres to a temperature between about 120 and 150 ° C and which is peelable .
  • This varnish of intermediate characteristics between the fusible varnishes and the heat-resistant varnishes, that is to say non-sticky, ensures the adhesion of the first sheet of synthetic material or upper sheet to the cardboard plate to allow the maintenance of the article to be packaged during the packaging process.
  • the cardboard plate is easily detached from the upper sheet of synthetic material, which allows a separate subsequent treatment for recycling.
  • the coating varnish of the cardboard plate is an acrylic varnish.
  • the packaging according to patent FR 2 612 497 is produced using a relatively rigid cardboard plate trapped between two sheets of synthetic material constituted by flexible films. The rigidity of the finished product is then ensured by the connection between the upper film and the cardboard.
  • the thicknesses are chosen so that the thickness of the first sheet of synthetic material is between 300 and 600 ⁇ m, the thickness of the second sheet of synthetic material is between 150 and 300 ⁇ m, and the thickness of the cardboard plate is of the order of 300 ⁇ m, its grammage being of the order of 250 g / m 2 .
  • this structure corresponds to sheets of synthetic material of higher rigidity and to a cardboard plate of thickness and lower rigidity.
  • the material of the sheets is chosen from polyvinyl chloride and polyacrylonitrile and the sheets are assembled outside of the cardboard plate, or inside the latter, for example at level d '' a suspension opening by a High Frequency welding operation.
  • This high frequency welding operation also makes it possible to perform the peripheral cutting, as well as possibly at the level of a suspension opening.
  • the packaging shown in Figures 1 to 3, and designated by the general reference 2, is intended for the packaging of a tool 3.
  • This packaging comprises a cardboard plate 4, at least the upper face of which receives, by printing, patterns decorative and / or indications concerning the description and the use of the tool.
  • This plate 4 has an opening 5 intended for hanging the packaging from a hook.
  • This plate 4 has a thickness of the order of 300 ⁇ m, and its grammage is of the order of 250 g / m 2 .
  • This plate 4 is coated on its upper face with a layer 6 of an intermediate varnish which adheres to a temperature between 120 and 150 ° C., constituted for example by an acrylic varnish.
  • an upper covering sheet 7 and a lower covering sheet 8 each having a surface area greater than that of the plate.
  • the sheets 7 and 8 are for example made of polyvinyl chloride or polyacrylonitrile, for example known under the brand BAREX, and have for the upper sheet a thickness of 300 to 600 ⁇ m, depending on the objects to be packaged, and for the lower sheet a thickness of 150 to 300 ⁇ m.
  • the upper covering sheet 7 is brought by raising the temperature to about 140 ° C. in its softened state, and is applied to the plate 4 on which the tool 3 rests, with provision for a vacuum at through it.
  • the cardboard plate can have a multitude of microperforations.
  • the sheet 7 then marries the tool and adheres to the plate 4 thanks to the presence of the varnish 6.
  • the sheet 8 is then fixed to the sheet 7 by a peripheral weld 9, obtained by high frequency or thermal welding. This weld is formed outside the peripheral edge of the plate 4.
  • a weld 10, between the two sheets 7 and 8, is formed at the opening 5, below the edge thereof.
  • Such packaging has the advantage that articles of different shapes can be packaged with standard tools, since the sheet 7 deforms to conform to the shape of the article.
  • the sheet 7 adheres sufficiently to the cardboard plate 4, thanks to the varnish 6, to allow handling without risk of dismantling the packaging during training.
  • the welding between the two sheets 7 and 8 ensures excellent tamper-evident of the packaging, requiring to reach the tool 7 to use a cutting tool.
  • the invention is not limited to the sole embodiment of this packaging described above by way of example, on the contrary it embraces all variants.
  • the materials constituting the upper 7 and lower 8 sheets could be different or that their thicknesses could be different, that the assembly of these sheets could be carried out by a process other than high frequency welding, without the 'We therefore go beyond the scope of the invention.

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  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

The packaging consists of a backing panel (4) of cardboard or similar material to support one or more articles (3) which is covered with a transparent film layer fixed in place by heat and vacuum. A second layer of transparent film is applied to the underside of the backing panel and fixed to the upper layer by a peripheral welding (9). The backing panel has an intermediate coating (6) of an acrylic varnish which sticks at a temperature of between 120 and 150 degrees C and can be peeled off. The upper and lower transparent film layers are of PVC or polyacrylonitrile and are 300-600 mcm and 150-300 mcm thick respectively. The cardboard panel is some 300 mcm thick and has a weight of about 250 g/m<2>.

Description

La présente invention a pour objet un emballage pour le conditionnement de produits sous un film transparent.The present invention relates to a packaging for packaging products under a transparent film.

Il est habituel de conditionner des produits de grande diffusion sur un support ou dans un emballage permettant de suspendre le produit au crochet d'un présentoir, tout en assurant la visualisation du produit ainsi que sa protection.It is usual to package widely distributed products on a support or in a packaging allowing the product to be hung on the hook of a display, while ensuring the visualization of the product as well as its protection.

Un premier emballage, connu sous le nom de SKINPACK, comprend une plaque de carton dont la face destinée à recevoir le produit est enduite d'une couche de matière synthétique, telle qu'un vernis thermocollant. Après dépôt du produit sur la plaque, une feuille de matière synthétique, en polyéthylène ou polychlorure de vinyle, portée à une température à laquelle la matière est malléable, est appliquée sur la face de la plaque sur laquelle est déposé le produit, tout en réalisant une aspiration à travers la plaque. Du fait du caractère malléable de la feuille, elle épouse la forme du produit et appuie celui-ci contre la plaque, tout en adhérant sur celle-ci, compte tenu de la température à laquelle elle se trouve.A first package, known under the name of SKINPACK, comprises a cardboard plate whose face intended to receive the product is coated with a layer of synthetic material, such as a fusible varnish. After depositing the product on the plate, a sheet of synthetic material, made of polyethylene or polyvinyl chloride, brought to a temperature at which the material is malleable, is applied to the face of the plate on which the product is deposited, while making a suction through the plate. Due to the malleable nature of the sheet, it follows the shape of the product and presses it against the plate, while adhering to it, taking into account the temperature at which it is located.

Si un tel emballage est d'une réalisation simple et économique, il présente l'inconvénient de ne pas assurer une bonne protection du produit conditionné contre le vol, compte tenu des facilités de délaminage de la plaque en carton et de la feuille de matière synthétique recouvrant celle-ci. Toutefois, ce délaminage est effectué avec arrachage d'une couche de carton, qui demeure liée à la feuille de matière synthétique, ce qui rend impossible le recyclage des éléments constitutifs de l'emballage, après ouverture de celui-ci.If such packaging is simple and economical to produce, it has the drawback of not ensuring good protection of the packaged product against theft, taking into account the delamination facilities of the cardboard plate and the sheet of synthetic material. covering it. However, this delamination is carried out with tearing off a layer of cardboard, which remains linked to the sheet of synthetic material, which makes it impossible to recycle the components of the packaging, after opening it.

Un autre emballage, connu sous le nom de blister, comprend une plaque en carton enduite d'un vernis thermocollant et une coque en matière synthétique, telle que du polychlorure de vinyle rigide, moulé à la forme du produit.Another package, known as a blister, comprises a cardboard plate coated with a fusible varnish and a shell of synthetic material, such as rigid polyvinyl chloride, molded to the shape of the product.

Après positionnement du produit dans la coque, la coque est fixée sur la plaque par pression à chaud. Un premier inconvénient de cette technique réside dans son coût de mise en oeuvre, puisqu'il convient de disposer d'un moule par produit à conditionner, ce moule étant destiné à réaliser par thermoformage le moulage de la plaque de matière synthétique rigide. En outre, le produit n'est pas fixé sur la plaque, puisqu'il existe un certain jeu entre celui-ci et la coque de matière synthétique, la visualisation du produit à travers la coque est moyenne, et il n'est pas possible de toucher celui-ci à travers la coque. Enfin, cet emballage ne présente pas un caractère d'inviolabilité sérieux du fait des possibilités de délaminage de la coque et du carton.After positioning the product in the shell, the shell is fixed to the plate by hot pressure. A first drawback of this technique lies in its cost of implementation, since it is necessary to have a mold per product to be packaged, this mold being intended to perform by thermoforming the molding of the plate of rigid synthetic material. In addition, the product is not fixed on the plate, since there is a certain clearance between this one and the plastic shell, the visualization of the product through the shell is average, and it is not possible of touch it through the hull. Finally, this packaging does not have a serious inviolability character due to the possibilities of delamination of the shell and the cardboard.

Un autre emballage dénommé emballage à double coque, comprend une coque inférieure dans laquelle est posé un produit, une plaque en carton imprimé étant placée sans y être fixée, entre deux coques ou entre une coque et une plaque en matière synthétique, par exemple en polychlorure de vinyle rigide, solidarisées l'une à l'autre au niveau de leur périphérie par une opération de soudage haute fréquence ou de soudage thermique.Another package, called double-shell packaging, comprises a lower shell in which a product is placed, a printed cardboard plate being placed without being fixed there, between two shells or between a shell and a plate made of synthetic material, for example polychloride of rigid vinyl, joined to each other at their periphery by a high frequency welding or thermal welding operation.

Si cet emballage présente l'avantage de posséder une inviolabilité bien supérieure à celle des emballages précédents, il présente l'inconvénient d'être d'une mise en oeuvre très coûteuse, puisqu'il convient de disposer de moules spécifiques à chaque produit pour thermoformer les coques, et il nécessite une installation de soudage sophistiquée. D'autres inconvénients de l'emballage résident dans le fait que celui-ci est volumineux, que la plaque n'adhère pas aux coques et que le produit conditionné n'adhère pas à la plaque.If this packaging has the advantage of having an inviolability much higher than that of the previous packaging, it has the disadvantage of being very expensive to use, since it is necessary to have molds specific to each product to thermoform. the hulls, and it requires a sophisticated welding installation. Other disadvantages of the packaging reside in the fact that it is bulky, that the plate does not adhere to the shells and that the packaged product does not adhere to the plate.

Le brevet FR 2 612 497, au nom de la Demanderesse, concerne un emballage comprenant :

  • une plaque en carton ou similaire destinée à servir de support à un ou plusieurs produits à conditionner, dont la face recevant le ou les produits reçoit une enduction d'une couche de matière synthétique,
  • une première feuille de matière synthétique qui, destinée à recouvrir la face supérieure de la plaque et le ou les produits reposant sur celle-ci, avec fixation sur celle-ci, sous l'action de la chaleur et avec application d'une dépression à travers la plaque, déborde du bord périphérique de la plaque et,
  • une seconde feuille de matière synthétique qui, destinée à recouvrir la face inférieure de la plaque est fixée sur la feuille de recouvrement supérieure par une soudure périphérique sur celle-ci au-delà du bord de la plaque.
Patent FR 2 612 497, in the name of the Applicant, relates to packaging comprising:
  • a cardboard plate or the like intended to serve as a support for one or more products to be packaged, the face of which receives the product or products receives a coating of a layer of synthetic material,
  • a first sheet of synthetic material which, intended to cover the upper face of the plate and the product or products resting thereon, with fixing thereon, under the action of heat and with the application of a vacuum to across the plate, overflows from the peripheral edge of the plate and,
  • a second sheet of synthetic material which, intended to cover the lower face of the plate, is fixed to the upper covering sheet by a peripheral weld thereon beyond the edge of the plate.

Il résulte de sa structure que cet emballage présente tous les avantages de l'emballage de type SKINPACK, puisque la plaque adhère à la feuille de revêtement supérieure, qui épouse intimement le ou les produits déposés sur la plaque, tout en possédant une excellente inviolabilité, du fait de la soudure périphérique réalisée entre les feuilles de revêtement supérieure et inférieure.It follows from its structure that this packaging has all the advantages of the SKINPACK type packaging, since the plate adheres to the upper coating sheet, which intimately follows the product or products deposited on the plate, while having excellent inviolability, due to the peripheral weld produced between the upper and lower covering sheets.

Dans ce cas encore, la plaque en carton et le film supérieur en matière synthétique ne sont pas séparables, ce qui pose un problème de recyclage.In this case also, the cardboard plate and the upper plastic film are not separable, which poses a recycling problem.

Le but de l'invention est de fournir un emballage du dernier type cité, c'est-à-dire offrant la possibilité de conditionner de nombreux articles avec le même outillage, possédant une bonne inviolabilité nécessitant l'utilisation d'un outil coupant pour récupérer le ou les articles conditionnés, et également permettant le recyclage de ces différents éléments constitutifs en autorisant notamment la séparation du carton et des deux feuilles de matière synthétique qui peuvent être traités ensuite séparément en tant que déchets.The object of the invention is to provide a packaging of the last type mentioned, that is to say offering the possibility of packaging numerous articles with the same tool, having good tamper-evident properties requiring the use of a cutting tool for recover the conditioned article or articles, and also allowing the recycling of these various constituent elements, in particular authorizing the separation of the cardboard and the two sheets of synthetic material which can then be treated separately as waste.

A cet effet, dans l'emballage qu'elle concerne, du type précité, la plaque en carton est enduite à l'aide d'un vernis intermédiaire, qui adhère à une température comprise entre environ 120 et 150°C et qui est pelable.To this end, in the packaging that it concerns, of the aforementioned type, the cardboard plate is coated with an intermediate varnish, which adheres to a temperature between about 120 and 150 ° C and which is peelable .

Ce vernis, de caractéristiques intermédiaires entre les vernis thermocollants et les vernis thermorésistants, c'est-à-dire non collants, assure l'adhérence de la première feuille de matière synthétique ou feuille supérieure sur la plaque en carton pour permettre le maintien de l'article à conditionner pendant le processus de conditionnement. Toutefois, lors du déballage, après découpe de l'emballage à l'aide d'un outil coupant, la plaque en carton se désolidarise facilement de la feuille supérieure de matière synthétique, ce qui permet un traitement ultérieur séparé en vue de leur recyclage.This varnish, of intermediate characteristics between the fusible varnishes and the heat-resistant varnishes, that is to say non-sticky, ensures the adhesion of the first sheet of synthetic material or upper sheet to the cardboard plate to allow the maintenance of the article to be packaged during the packaging process. However, during unpacking, after cutting the packaging using a cutting tool, the cardboard plate is easily detached from the upper sheet of synthetic material, which allows a separate subsequent treatment for recycling.

Suivant une possibilité, le vernis d'enduction de la plaque de carton est un vernis acrylique.According to one possibility, the coating varnish of the cardboard plate is an acrylic varnish.

L'emballage conforme au brevet FR 2 612 497 est réalisé à l'aide d'une plaque en carton relativement rigide, emprisonnée entre deux feuilles de matière synthétique constituées par des films souples. La rigidité du produit fini est alors assurée par la liaison entre le film supérieur et le carton.The packaging according to patent FR 2 612 497 is produced using a relatively rigid cardboard plate trapped between two sheets of synthetic material constituted by flexible films. The rigidity of the finished product is then ensured by the connection between the upper film and the cardboard.

Dans l'emballage selon l'invention, afin de conserver une rigidité satisfaisante tout en rendant la feuille supérieure et la plaque en carton dissociables, les épaisseurs sont choisies de telle sorte que l'épaisseur de la première feuille de matière synthétique soit comprise entre 300 et 600µm, l'épaisseur de la seconde feuille de matière synthétique soit comprise entre 150 et 300 µm, et l'épaisseur de la plaque de carton est de l'ordre de 300 µm, son grammage étant de l'ordre de 250 g/m2.In the packaging according to the invention, in order to maintain satisfactory rigidity while making the upper sheet and the cardboard plate separable, the thicknesses are chosen so that the thickness of the first sheet of synthetic material is between 300 and 600 μm, the thickness of the second sheet of synthetic material is between 150 and 300 μm, and the thickness of the cardboard plate is of the order of 300 µm, its grammage being of the order of 250 g / m 2 .

Par rapport à l'emballage connu, cette structure correspond à des feuilles de matière synthétique de rigidité supérieure et à une plaque en carton d'épaisseur et de rigidité inférieures.Compared to the known packaging, this structure corresponds to sheets of synthetic material of higher rigidity and to a cardboard plate of thickness and lower rigidity.

Suivant une forme de réalisation, la matière constitutive des feuilles est choisie parmi les polychlorure de vinyle et polyacrylonitrile et les feuilles sont assemblées à l'extérieur de la plaque en carton, ou à l'intérieur de celle-ci, par exemple au niveau d'une ouverture de suspension par une opération de soudage à Haute Fréquence. Cette opération de soudage à Haute Fréquence permet également de réaliser la découpe périphérique, ainsi qu'éventuellement au niveau d'une ouverture de suspension.According to one embodiment, the material of the sheets is chosen from polyvinyl chloride and polyacrylonitrile and the sheets are assembled outside of the cardboard plate, or inside the latter, for example at level d '' a suspension opening by a High Frequency welding operation. This high frequency welding operation also makes it possible to perform the peripheral cutting, as well as possibly at the level of a suspension opening.

De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme d'exécution de cette emballage :

  • Figure 1 est une vue en perspective éclatée des différents éléments constitutifs de cet emballage ainsi que d'un outil destiné à être conditionné dans celui-ci ;
  • Figure 2 est une vue en perspective de l'emballage en position finie ;
  • Figure 3 en est une vue en coupe transversale et à échelle agrandie selon la ligne III-III de figure 2.
In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting example, an embodiment of this packaging:
  • Figure 1 is an exploded perspective view of the various components of this package and a tool intended to be packaged therein;
  • Figure 2 is a perspective view of the package in the finished position;
  • Figure 3 is a cross-sectional view on an enlarged scale along the line III-III of Figure 2.

L'emballage représenté aux figures 1 à 3, et désigné par la référence générale 2, est destiné au conditionnement d'un outil 3. Cet emballage comprend une plaque en carton 4, dont au moins la face supérieure reçoit, par impression, des motifs décoratifs et/ou des indications concernant la description et l'utilisation de l'outil. Cette plaque 4 présente une ouverture 5 destinée à la suspension de l'emballage à un crochet. Cette plaque 4 possède une épaisseur de l'ordre de 300 µm, et son grammage est de l'ordre de 250 g/m2. Cette plaque 4 est enduite sur sa face supérieure d'une couche 6 d'un vernis intermédiaire qui adhère à une température comprise entre 120 et 150°C, constituée par exemple par un vernis acrylique.The packaging shown in Figures 1 to 3, and designated by the general reference 2, is intended for the packaging of a tool 3. This packaging comprises a cardboard plate 4, at least the upper face of which receives, by printing, patterns decorative and / or indications concerning the description and the use of the tool. This plate 4 has an opening 5 intended for hanging the packaging from a hook. This plate 4 has a thickness of the order of 300 μm, and its grammage is of the order of 250 g / m 2 . This plate 4 is coated on its upper face with a layer 6 of an intermediate varnish which adheres to a temperature between 120 and 150 ° C., constituted for example by an acrylic varnish.

A cette plaque 4 sont associées une feuille de revêtement supérieur 7 et une feuille de revêtement inférieur 8, chacune de surface supérieure à celle de la plaque.To this plate 4 are associated an upper covering sheet 7 and a lower covering sheet 8, each having a surface area greater than that of the plate.

Les feuilles 7 et 8 sont par exemple réalisées en polychlorure de vinyle ou en polyacrylonitrile, par exemple connu sous la marque BAREX, et possèdent pour la feuille supérieure une épaisseur de 300 à 600 µm, suivant les objets à conditionner, et pour la feuille inférieure une épaisseur de 150 à 300 µm.The sheets 7 and 8 are for example made of polyvinyl chloride or polyacrylonitrile, for example known under the brand BAREX, and have for the upper sheet a thickness of 300 to 600 μm, depending on the objects to be packaged, and for the lower sheet a thickness of 150 to 300 µm.

Dans un premier temps, la feuille de revêtement supérieur 7 est amenée par élévation de température à environ 140°C à son état de ramollissement, et est appliquée sur la plaque 4 sur laquelle repose l'outil 3, avec ménagement d'une dépression à travers celle-ci. A cet effet, la plaque en carton peut posséder une multitude de microperforations. La feuille 7 épouse alors l'outil et adhère à la plaque 4 grâce à la présence du vernis 6.Firstly, the upper covering sheet 7 is brought by raising the temperature to about 140 ° C. in its softened state, and is applied to the plate 4 on which the tool 3 rests, with provision for a vacuum at through it. For this purpose, the cardboard plate can have a multitude of microperforations. The sheet 7 then marries the tool and adheres to the plate 4 thanks to the presence of the varnish 6.

La feuille 8 est ensuite fixée à la feuille 7 par une soudure périphérique 9, obtenue par soudage haute fréquence ou thermique. Cette soudure est ménagée à l'extérieur du bord périphérique de la plaque 4. En outre, une soudure 10, entre les deux feuilles 7 et 8, est ménagée au niveau de l'ouverture 5, en deçà du bord de celle-ci.The sheet 8 is then fixed to the sheet 7 by a peripheral weld 9, obtained by high frequency or thermal welding. This weld is formed outside the peripheral edge of the plate 4. In addition, a weld 10, between the two sheets 7 and 8, is formed at the opening 5, below the edge thereof.

Un tel emballage présente l'avantage que des articles de différentes formes peuvent être conditionnés avec un outillage standard, dans la mesure où la feuille 7 se déforme pour épouser la forme de l'article. En outre, lors de la réalisation de l'emballage, la feuille 7 adhère suffisamment à la plaque en carton 4, grâce au vernis 6, pour permettre les manipulations sans risques de démontage de l'emballage en cours de formation. Enfin, la soudure entre les deux feuilles 7 et 8 assure une excellente inviolabilité de l'emballage, nécessitant pour atteindre l'outil 7 d'utiliser un outil coupant.Such packaging has the advantage that articles of different shapes can be packaged with standard tools, since the sheet 7 deforms to conform to the shape of the article. In addition, during the production of the packaging, the sheet 7 adheres sufficiently to the cardboard plate 4, thanks to the varnish 6, to allow handling without risk of dismantling the packaging during training. Finally, the welding between the two sheets 7 and 8 ensures excellent tamper-evident of the packaging, requiring to reach the tool 7 to use a cutting tool.

Après découpe totale ou partielle de la soudure périphérique 9, il est possible d'accéder à l'outil 3 en arrachant la feuille supérieure 7 qui, grâce au caractère pelable du vernis 7, se désolidarise facilement de la plaque en carton 4.After total or partial cutting of the peripheral weld 9, it is possible to access the tool 3 by tearing off the upper sheet 7 which, thanks to the peelable nature of the varnish 7, is easily detached from the cardboard plate 4.

Dans ces conditions, après arrachage de la feuille supérieure 7, cette dernière ainsi que la feuille 8 sont totalement indépendantes de la plaque en carton 4, ce qui permet une évacuation sélective de ses déchets en vue d'un éventuel recyclage.Under these conditions, after tearing off the upper sheet 7, the latter and the sheet 8 are completely independent of the cardboard plate 4, which allows selective disposal of its waste with a view to possible recycling.

Comme il va de soi, l'invention ne se limite pas à la seule forme d'exécution de cet emballage décrite ci-dessus à titre d'exemple, elle en embrasse au contraire toutes les variantes. C'est ainsi notamment que les matériaux constitutifs des feuilles supérieure 7 et inférieure 8 pourraient être différents ou que leurs épaisseurs pourraient être différentes, que l'assemblage de ces feuilles pourrait être réalisé par un procédé autre que le soudage haute fréquence, sans que l'on sorte pour autant du cadre de l'invention.As it goes without saying, the invention is not limited to the sole embodiment of this packaging described above by way of example, on the contrary it embraces all variants. Thus, in particular that the materials constituting the upper 7 and lower 8 sheets could be different or that their thicknesses could be different, that the assembly of these sheets could be carried out by a process other than high frequency welding, without the 'We therefore go beyond the scope of the invention.

Claims (7)

Emballage pour le conditionnement de produits sous un film transparent, du type comprenant : - une plaque en carton (4) ou similaire destinée à servir de support à un ou plusieurs produits (3) à conditionner, dont la face recevant le ou les produits reçoit une enduction d'une couche de matière synthétique, - une première feuille (7) de matière synthétique qui, destinée à recouvrir la face supérieure de la plaque (4) et le ou les produits (3) reposant sur celle-ci, avec fixation sur celle-ci, sous l'action de la chaleur et avec application d'une dépression à travers la plaque, déborde du bord périphérique de la plaque et, - une seconde feuille (8) de matière synthétique qui, destinée à recouvrir la face inférieure de la plaque (4) est fixée sur la feuille de recouvrement supérieure par une soudure périphérique (9) sur celle-ci au-delà du bord de la plaque, caractérisé en ce que la plaque en carton (4) est enduite à l'aide d'un vernis intermédiaire (6), qui adhère à une température comprise entre environ 120 et 150°C et qui est pelable.Packaging for the packaging of products under a transparent film, of the type comprising: - a cardboard plate (4) or the like intended to serve as a support for one or more products (3) to be packaged, the face of which receives the product or products receives a coating of a layer of synthetic material, - A first sheet (7) of synthetic material which, intended to cover the upper face of the plate (4) and the product or products (3) resting thereon, with fixing thereon, under the action of heat and with the application of a vacuum through the plate, overflows from the peripheral edge of the plate and, - a second sheet (8) of synthetic material which, intended to cover the lower face of the plate (4) is fixed to the upper cover sheet by a peripheral weld (9) on it beyond the edge of the plate, characterized in that the cardboard plate (4) is coated with an intermediate varnish (6), which adheres at a temperature between about 120 and 150 ° C and which is peelable. Emballage selon la revendication 1, caractérisé en ce que le vernis d'enduction (6) de la plaque de carton est un vernis acrylique.Packaging according to claim 1, characterized in that the coating varnish (6) of the cardboard plate is an acrylic varnish. Emballage selon l'une quelconque des revendications 1 et 2, caractérisé en ce que l'épaisseur de la première feuille (7) ou feuille supérieure de matière synthétique est comprise entre 300 et 600 µm.Packaging according to either of Claims 1 and 2, characterized in that the thickness of the first sheet (7) or upper sheet of synthetic material is between 300 and 600 µm. Emballage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'épaisseur de la seconde feuille (8) ou feuille inférieure de matière synthétique est comprise entre 150 et 300 µm.Packaging according to any one of claims 1 to 3, characterized in that the thickness of the second sheet (8) or lower sheet of synthetic material is between 150 and 300 µm. Emballage selon les revendications 3 et 4, caractérisé en ce que l'épaisseur de la plaque en carton (4) est de l'ordre de 300 µm et son grammage est de l'ordre de 250 g/m2.Packaging according to claims 3 and 4, characterized in that the thickness of the cardboard plate (4) is of the order of 300 µm and its grammage is of the order of 250 g / m 2 . Emballage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la matière synthétique constitutive des feuilles (7, 8) est choisie parmi les polychlorure de vinyle et polyacrylonitrile.Packaging according to any one of Claims 1 to 5, characterized in that the synthetic material constituting the sheets (7, 8) is chosen from polyvinyl chloride and polyacrylonitrile. Emballage selon la revendication 6, caractérisé en ce que les feuilles de matière synthétique (7, 8) sont assemblées par soudage à Haute Fréquence.Packaging according to claim 6, characterized in that the plastic sheets (7, 8) are assembled by high frequency welding.
EP96420184A 1995-05-24 1996-05-21 Vacuum skin package Withdrawn EP0744354A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9506414 1995-05-24
FR9506414A FR2734547B1 (en) 1995-05-24 1995-05-24 PACKAGING FOR THE PACKAGING OF PRODUCTS UNDER A TRANSPARENT FILM

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EP0744354A1 true EP0744354A1 (en) 1996-11-27

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1152475A (en) * 1956-06-22 1958-02-18 Skin Pack Soc Packaging
US3326372A (en) * 1964-05-28 1967-06-20 Fineman Bernard Package and packaging technique
US3721336A (en) * 1970-09-04 1973-03-20 Diversified Packaging Inc Easy opening packages
US4056190A (en) * 1976-05-13 1977-11-01 Walter James Dix Packaging articles and identifying templates
US4062449A (en) * 1976-10-20 1977-12-13 Opportunity Workshop, Inc. Skin package with transparent back window
EP0284529A1 (en) * 1987-03-17 1988-09-28 SOCIETE VILLEURBANNAISE D'EMBALLAGES MODERNES SVEM (Société Anonyme de droit français) Packaging of products in a transparent film, process for the production of this package and device for carrying out the process
WO1993024374A1 (en) * 1992-05-29 1993-12-09 Johannes Rasmussen Procedure and equipment for the manufacture of skin-packings and such a skin-packing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1152475A (en) * 1956-06-22 1958-02-18 Skin Pack Soc Packaging
US3326372A (en) * 1964-05-28 1967-06-20 Fineman Bernard Package and packaging technique
US3721336A (en) * 1970-09-04 1973-03-20 Diversified Packaging Inc Easy opening packages
US4056190A (en) * 1976-05-13 1977-11-01 Walter James Dix Packaging articles and identifying templates
US4062449A (en) * 1976-10-20 1977-12-13 Opportunity Workshop, Inc. Skin package with transparent back window
EP0284529A1 (en) * 1987-03-17 1988-09-28 SOCIETE VILLEURBANNAISE D'EMBALLAGES MODERNES SVEM (Société Anonyme de droit français) Packaging of products in a transparent film, process for the production of this package and device for carrying out the process
WO1993024374A1 (en) * 1992-05-29 1993-12-09 Johannes Rasmussen Procedure and equipment for the manufacture of skin-packings and such a skin-packing

Also Published As

Publication number Publication date
FR2734547A1 (en) 1996-11-29
FR2734547B1 (en) 1997-07-04

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