EP1293445B1 - Easy to open package for food items - Google Patents

Easy to open package for food items Download PDF

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Publication number
EP1293445B1
EP1293445B1 EP02356147A EP02356147A EP1293445B1 EP 1293445 B1 EP1293445 B1 EP 1293445B1 EP 02356147 A EP02356147 A EP 02356147A EP 02356147 A EP02356147 A EP 02356147A EP 1293445 B1 EP1293445 B1 EP 1293445B1
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EP
European Patent Office
Prior art keywords
layer
packaging
plastic material
sealable plastic
heat sealable
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 - Lifetime
Application number
EP02356147A
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German (de)
French (fr)
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EP1293445A1 (en
Inventor
Alexandre Paviot
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Papiers A Paviot
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Papiers A Paviot
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Publication of EP1293445A1 publication Critical patent/EP1293445A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks
    • 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
    • B65D75/40—Packages formed by enclosing successive articles, or increments of material, in webs, e.g. folded or tubular webs, or by subdividing tubes filled with liquid, semi-liquid, or plastic materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Definitions

  • the present invention relates to the technical field of the packaging of products at their place of sale and / or packaging and, in particular, products food retail, wholesale or semi-wholesale.
  • the present invention aims, preferably but not exclusively, at a packaging in the form of a sheath intended to be cut at the request and be sealed.
  • the patent FR 2 775 252 has proposed to use a compound sheath, at least in part, in a heat-sealable material.
  • This sheath consists of two sheets superimposed and assembled composites (by bonding or welding, for example) level of their longitudinal edges. Each composite sheet has a layer external aluminum, an inner layer of low density polyethylene and a layer of paper covered with a layer of low density polyethylene.
  • This sheath, packaged in roll is intended to be cut on the place of use in a slightly longer than the product to be packaged.
  • a end of the sheath is cut and closed simultaneously by heat sealing to make a bag. Then, after introduction of the product to be packaged in the bag thus produced, the other end of the sheath is heat-welded so as to get a waterproof package.
  • Such a packaging sheath is particularly useful for the fresh or frozen food products, such as fish and meat, when selling these retail, wholesale or semi-wholesale.
  • the present invention therefore aims to remedy the drawbacks mentioned above by proposing a new packaging for food products intended to be closed by heat sealing, and designed to allow the easy opening of packaging to introduce the product to be packaged, even for a user possessing wet hands or wearing gloves.
  • the present invention relates to a packaging for foodstuffs, intended to comprise two superposed composite sheets, each composite sheet having at least one layer of plastics material heat sealable forming the inner surface of the package.
  • each heat-sealable plastic layer has a roughness BENDTSEN DIN 53108 less than or equal to 1 200 ml / min and in that the layers of heat-sealable plastic material have, among themselves, a coefficient of friction less than or equal to 0.5 to ensure easy opening of the sheath.
  • Fig. 1 is a top view showing an embodiment of a packaging according to the invention.
  • Fig. 2 is a large-scale sectional view showing the structure of a package according to the invention.
  • Fig. 1 shows an embodiment of a package 1 in the form of a sheath cut from a sheath 2 packaged generally in roll.
  • the sheath 2 comprises two superimposed composite sheets 4, 5 which, in the example illustrated, are assembled together at their longitudinal edges 6 by welding, bonding or mechanical assembly, for example.
  • This sheath 2 is cut to the desired length to contain a food product 7 , such as fish.
  • a transverse weld connecting the two longitudinal edges 6 is formed on one end 11 of the package 1 which is thus in the form of a bag, capable of being opened by the other transverse end 12 having an opening giving access to the internal volume of the bag.
  • each composite sheet 4, 5 comprises at least one layer 14 of a heat-sealable or heat-sealable plastic material having an outer surface 14a together forming the inner surface of the sheath, as is clear from FIG. 2.
  • each composite sheet 4, 5 has a layer of heat-sealable material 14 facing each other by their outer surface 14a, to heat-seal the two sheets 4, 5 between them.
  • the layers of heat-sealing plastic material 14 are against each other, the application of localized pressure between the sheets 4, 5 for example at the transverse edges of the sheath, supplemented by localized heating allows to obtain a weld of leaves between them.
  • each composite sheet 4, 5 comprises at least one layer of a heat-sealable plastic material.
  • the material constituting the heat-sealable plastic layer 14 is a low-density polyethylene (LDPE).
  • LDPE low-density polyethylene
  • each heat-sealable plastic layer 14 has a roughness according to the BENDTSEN technique DIN 53 108, less than or equal to 1200 milliliters per minute and according to an advantageous characteristic, of between 800 and 1200 ml / min, and more preferably of the order of 910 ml / min.
  • each heat-sealable plastic layer 14 can be obtained by means for example of a rough heavy cylinder, coming into contact with the outer surface 14 a of the heat-sealable plastic layer 14.
  • the plastic layer Heat sealable is achieved by extruding copolymers of EAA type [(Ethylene-Acrylic-Acid) additives for LDPE] and all types of LDPE. All types of extrusion or coextrusion coating are included in the invention.
  • the layers of heat-sealable plastic material 14 have between them a coefficient of friction of less than or equal to 0.5 and preferably between 0.25 and 0.35 and, more preferably, order of 0.3 according to DIN 53 375.
  • Such a coefficient of friction can be obtained by extrusion or coextrusion of specific polymers (certain types of modified LDPE) and / or the addition of less a slip agent, such as, for example, the product referenced 252 CH marketed under the trade name EXXON.
  • heat-sealable plastic layers 14 having a specific roughness associated with a determined coefficient of friction makes it possible to ensure easy opening of the sheath. Indeed, such a package 1 can be easily opened, even by wet hands or gloves, from its free edges by a simple movement of friction between the two sheets 4, 5 . Such easy opening is possible thanks to the present invention of "easy sheath opening", and by a determination of friction, roughness, slippage for heat-sealable plastic layers 14 against each other.
  • each composite sheet 4, 5 comprises the heat-sealable plastic layer 14 deposited on a paper layer 15 , preferably of high mechanical strength.
  • each composite sheet 4, 5 also comprises an inner heat-sealable plastic layer 16 interposed between the paper layer 15 and an outer layer of aluminum 17 preferably coated with a printing varnish.
  • the sheath forming the package 1 consists of two composite sheets 4, 5 placed in superposed position one against the other and assembled along their two longitudinal edges 6 .
  • the package 1 in the form of a seamless sheath or a sheath with a single weld obtained by folding a sheet on itself and welding the free edges opposite to the fold.
  • the packaging 1 can be made from the folding of a sheet on itself in order to obtain the two superimposed composite sheets 4, 5 which are assembled at their edges to form a bag having an opening access to its internal volume which is closed by heat sealing after introduction of the product to be packaged inside the package.
  • the packaging according to the invention is intended to comprise at least two superimposed composite sheets 4, 5 as described above and which, assembled at their edges, for example by gluing, by welding or by mechanical assembly, allow to constitute a bag with an opening for the introduction of the product to be conditioned .
  • the opening of the bag is then closed by heat sealing as explained above.
  • each composite sheet 4, 5 has a different structure from that described.
  • it may be provided to replace the inner layer of heat-sealable plastics material 16 through a layer of glue. It may be possible to use a non-aluminum material.
  • each composite sheet 4, 5 should have at least one layer of heat-sealable plastic material, in order to heat-seal the two sheets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Bag Frames (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Processing Of Meat And Fish (AREA)
  • Cartons (AREA)

Abstract

Package (1) comprises sleeve made from two composite layers (4, 5) each covered with a thermo-sealable plastic (14) forming the inner surface of the package. The plastic covering has a roughness on Bendtsen DIN 53108 scale of 800-1200 ml/min, and preferably of 910 ml/min. The surfaces of the covering have a friction coefficient between them of ≤ 0.5 to allow for easy opening of the sleeve.

Description

La présente invention concerne le domaine technique de l'emballage de produits sur leur lieu de vente et/ou de conditionnement et, notamment, de produits alimentaires vendus au détail, en gros ou demi-gros.The present invention relates to the technical field of the packaging of products at their place of sale and / or packaging and, in particular, products food retail, wholesale or semi-wholesale.

La présente invention vise, préférentiellement mais non exclusivement, un emballage se présentant sous la forme d'une gaine destinée à être découpée à la demande et à être fermée de manière étanche.The present invention aims, preferably but not exclusively, at a packaging in the form of a sheath intended to be cut at the request and be sealed.

Dans le domaine de l'emballage des produits alimentaires, le brevet FR 2 775 252 a proposé de mettre en oeuvre une gaine composée, en partie au moins, en un matériau thermosoudable. Cette gaine est constituée à partir de deux feuilles composites superposées et assemblées (par collage ou soudage par exemple) au niveau de leurs bords longitudinaux. Chaque feuille composite comporte une couche externe d'aluminium, une couche interne de polyéthylène basse densité et une couche de papier recouverte d'une couche de polyéthylène basse densité. Cette gaine, conditionnée en rouleau, est destinée à être découpée sur le lieu d'utilisation en une longueur légèrement supérieure à celle du produit à emballer. De préférence, une extrémité de la gaine est coupée et fermée simultanément par thermosoudage afin de réaliser un sachet. Ensuite, après introduction du produit à conditionner dans le sachet ainsi réalisé, l'autre extrémité de la gaine est thermosoudée de manière à obtenir un emballage étanche.In the field of food packaging, the patent FR 2 775 252 has proposed to use a compound sheath, at least in part, in a heat-sealable material. This sheath consists of two sheets superimposed and assembled composites (by bonding or welding, for example) level of their longitudinal edges. Each composite sheet has a layer external aluminum, an inner layer of low density polyethylene and a layer of paper covered with a layer of low density polyethylene. This sheath, packaged in roll, is intended to be cut on the place of use in a slightly longer than the product to be packaged. Preferably, a end of the sheath is cut and closed simultaneously by heat sealing to make a bag. Then, after introduction of the product to be packaged in the bag thus produced, the other end of the sheath is heat-welded so as to get a waterproof package.

L'utilisation d'une telle gaine d'emballage est particulièrement utile pour le conditionnement de produits alimentaires frais ou surgelés, tels que du poisson et de la viande, lors de la vente de ces derniers au détail, en gros ou demi-gros.The use of such a packaging sheath is particularly useful for the fresh or frozen food products, such as fish and meat, when selling these retail, wholesale or semi-wholesale.

Toutefois, pour l'introduction du produit à conditionner dans le sachet ainsi réalisé, l'utilisateur doit l'ouvrir en écartant les feuilles composites. Or, dans certaines conditions d'utilisation, il apparaít parfois une difficulté pour ouvrir le sachet, en particulier lorsque l'utilisateur possède les mains mouillées ou porte des gants.However, for the introduction of the product to be packaged into the bag as well realized, the user must open it by spreading the composite sheets. In some conditions of use, it sometimes appears difficult to open the bag, especially when the user has wet hands or is wearing gloves.

La présente invention vise donc à remédier aux inconvénients énoncés ci-dessus en proposant un nouvel emballage pour produits alimentaires destiné à être fermé par thermosoudage, et conçu de manière à autoriser l'ouverture aisée de l'emballage pour y introduire le produit à conditionner, même pour un utilisateur possédant les mains mouillées ou équipées de gants.The present invention therefore aims to remedy the drawbacks mentioned above by proposing a new packaging for food products intended to be closed by heat sealing, and designed to allow the easy opening of packaging to introduce the product to be packaged, even for a user possessing wet hands or wearing gloves.

Pour atteindre un tel objectif, la présente invention concerne un emballage pour produits alimentaires, destiné à comporter deux feuilles composites superposées, chaque feuille composite comportant au moins une couche de matière plastique thermoscellable formant la surface intérieure de l'emballage. Selon l'invention, chaque couche de matière plastique thermoscellable présente une rugosité BENDTSEN DIN 53108 inférieure ou égale à 1 200 ml/min et en ce que les couches de matière plastique thermoscellable possèdent, entre elles, un coefficient de friction inférieur ou égal à 0,5 pour assurer l'ouverture aisée de la gaine.To achieve such an objective, the present invention relates to a packaging for foodstuffs, intended to comprise two superposed composite sheets, each composite sheet having at least one layer of plastics material heat sealable forming the inner surface of the package. According to the invention, each heat-sealable plastic layer has a roughness BENDTSEN DIN 53108 less than or equal to 1 200 ml / min and in that the layers of heat-sealable plastic material have, among themselves, a coefficient of friction less than or equal to 0.5 to ensure easy opening of the sheath.

Diverses autres caractéristiques ressortent de la description faite ci-dessous en référence aux dessins annexés qui montrent, à titre d'exemples non limitatifs, des formes de réalisation de l'invention.Various other features are apparent from the description given below in reference to the accompanying drawings which show, by way of non-limiting examples, embodiments of the invention.

La fig. 1 est une vue de dessus montrant un exemple de réalisation d'un emballage conforme à l'invention. Fig. 1 is a top view showing an embodiment of a packaging according to the invention.

La fig. 2 est une vue à grande échelle en coupe montrant la structure d'un emballage conforme à l'invention. Fig. 2 is a large-scale sectional view showing the structure of a package according to the invention.

La fig. 1 représente un exemple de réalisation d'un emballage 1 se présentant sous la forme d'une gaine découpée à partir d'une gaine 2 conditionnée généralement en rouleau. Dans l'exemple illustré, la gaine 2 comporte deux feuilles composites 4, 5 superposées qui, dans l'exemple illustré, sont assemblées entre elles au niveau de leurs bords longitudinaux 6 par soudage, collage ou assemblage mécanique, par exemple. Cette gaine 2 est découpée à la longueur souhaitée pour contenir un produit alimentaire 7, tel que du poisson. De préférence, lors de la découpe de la gaine 2 pour constituer l'emballage 1, une soudure transversale reliant les deux bords longitudinaux 6 est réalisée sur une extrémité 11 de l'emballage 1 qui se présente ainsi sous la forme d'un sachet, susceptible d'être ouvert par l'autre extrémité transversale 12 présentant une ouverture donnant accès au volume interne du sachet. Fig. 1 shows an embodiment of a package 1 in the form of a sheath cut from a sheath 2 packaged generally in roll. In the example shown, the sheath 2 comprises two superimposed composite sheets 4, 5 which, in the example illustrated, are assembled together at their longitudinal edges 6 by welding, bonding or mechanical assembly, for example. This sheath 2 is cut to the desired length to contain a food product 7 , such as fish. Preferably, during the cutting of the sheath 2 to constitute the package 1, a transverse weld connecting the two longitudinal edges 6 is formed on one end 11 of the package 1 which is thus in the form of a bag, capable of being opened by the other transverse end 12 having an opening giving access to the internal volume of the bag.

Selon une caractéristique de l'invention, chaque feuille composite 4, 5 comporte au moins une couche 14 en un matériau plastique thermoscellable ou thermosoudable présentant une surface externe 14a formant ensemble la surface intérieure de la gaine, comme cela apparaít clairement à la fig. 2. Ainsi, chaque feuille composite 4, 5 possède une couche en un matériau thermoscellable 14 en face l'une de l'autre par leur surface externe 14a, pour assurer le thermosoudage des deux feuilles 4, 5 entre elles. Ainsi, comme les couches de matériau plastique thermoscellable 14 sont l'une contre l'autre, l'application d'une pression localisée entre les feuilles 4, 5 par exemple au niveau des bords transversaux de la gaine, complétée par un chauffage localisé permet d'obtenir une soudure des feuilles entre elles.According to one characteristic of the invention, each composite sheet 4, 5 comprises at least one layer 14 of a heat-sealable or heat-sealable plastic material having an outer surface 14a together forming the inner surface of the sheath, as is clear from FIG. 2. Thus, each composite sheet 4, 5 has a layer of heat-sealable material 14 facing each other by their outer surface 14a, to heat-seal the two sheets 4, 5 between them. Thus, since the layers of heat-sealing plastic material 14 are against each other, the application of localized pressure between the sheets 4, 5 for example at the transverse edges of the sheath, supplemented by localized heating allows to obtain a weld of leaves between them.

Il doit être donc être compris que chaque feuille composite 4, 5 comporte au moins une couche d'un matériau plastique thermoscellable.It must therefore be understood that each composite sheet 4, 5 comprises at least one layer of a heat-sealable plastic material.

Selon une caractéristique préférée de réalisation qui sera décrite dans la suite de la description, le matériau constitutif de la couche de matière plastique thermoscellable 14 est un polyéthylène basse densité (PEBD). Bien entendu, il peut être prévu de réaliser la couche de matière plastique thermoscellable 14 avec un matériau différent tel que par exemple du polypropylène, de la colle ou de la cire thermoscellable, ou une couche de matériau thermoscellable déposé par dispersion.According to a preferred embodiment which will be described in the following description, the material constituting the heat-sealable plastic layer 14 is a low-density polyethylene (LDPE). Of course, it may be provided to make the heat-sealable plastic layer 14 with a different material such as for example polypropylene, glue or heat-sealable wax, or a layer of heat-sealable material deposited by dispersion.

Conformément à l'invention, chaque couche de matière plastique thermoscellable 14 présente une rugosité selon la technique BENDTSEN DIN 53 108, inférieure ou égale à 1200 millilitres par minute et selon une caractéristique avantageuse, comprise entre 800 et 1200 ml/min et de préférence encore de l'ordre de 910 ml/min.According to the invention, each heat-sealable plastic layer 14 has a roughness according to the BENDTSEN technique DIN 53 108, less than or equal to 1200 milliliters per minute and according to an advantageous characteristic, of between 800 and 1200 ml / min, and more preferably of the order of 910 ml / min.

La rugosité peut être obtenue sur chaque couche de matière plastique thermoscellable 14 par l'intermédiaire par exemple d'un cylindre rugueux pesant, venant au contact de la surface externe 14a de la couche matière plastique thermoscellable 14. Par exemple la couche de matière plastique thermoscellable est réalisée par l'extrusion de copolymères de type EAA [(Ethylène-Acrylique-Acide) additifs pour PEBD] et de tous les types de PEBD. Tous les types d'extrusion ou de coextrusion par couchage sont inclus dans l'invention.The roughness can be obtained on each heat-sealable plastic layer 14 by means for example of a rough heavy cylinder, coming into contact with the outer surface 14 a of the heat-sealable plastic layer 14. For example, the plastic layer Heat sealable is achieved by extruding copolymers of EAA type [(Ethylene-Acrylic-Acid) additives for LDPE] and all types of LDPE. All types of extrusion or coextrusion coating are included in the invention.

Selon une autre caractéristique de l'invention, les couches de matière plastique thermoscellable 14 possèdent entre elles un coefficient de friction inférieur ou égal à 0,5 et de péférence compris entre 0,25 et 0,35 et, de préférence encore, de l'ordre de 0,3 selon la norme DIN 53 375.According to another characteristic of the invention, the layers of heat-sealable plastic material 14 have between them a coefficient of friction of less than or equal to 0.5 and preferably between 0.25 and 0.35 and, more preferably, order of 0.3 according to DIN 53 375.

Un tel coefficient de friction peut être obtenu par l'extrusion ou la coextrusion de polymères spécifiques (certains types de PEBD modifiés) et/ou par l'addition d'au moins un agent glissant, tel que, par exemple, le produit référencé 252 CH commercialisé sous la dénomination commerciale EXXON.Such a coefficient of friction can be obtained by extrusion or coextrusion of specific polymers (certain types of modified LDPE) and / or the addition of less a slip agent, such as, for example, the product referenced 252 CH marketed under the trade name EXXON.

La mise en oeuvre combinée de couches de matière plastique thermoscellable 14, présentant une rugosité spécifique associée à un coefficient de friction déterminé permet d'assurer l'ouverture aisée de la gaine. En effet, un tel emballage 1 peut être ouvert facilement, même par des mains mouillées ou équipées de gants, à partir de ses bords libres par un simple mouvement de frottement entre les deux feuilles 4, 5. Une telle ouverture aisée est possible grâce à la présente invention de "l'ouverture facile gaine", et par une détermination des frictions, des rugosités, des glissants pour les couches de matière plastique thermoscellable 14 l'une contre l'autre.The combined use of heat-sealable plastic layers 14 , having a specific roughness associated with a determined coefficient of friction makes it possible to ensure easy opening of the sheath. Indeed, such a package 1 can be easily opened, even by wet hands or gloves, from its free edges by a simple movement of friction between the two sheets 4, 5 . Such easy opening is possible thanks to the present invention of "easy sheath opening", and by a determination of friction, roughness, slippage for heat-sealable plastic layers 14 against each other.

Selon une caractéristique préférée de réalisation, chaque feuille composite 4, 5 comporte la couche de matière plastique thermoscellable 14 déposée sur une couche de papier 15, de préférence de résistance mécanique élevée. De préférence, chaque feuille composite 4, 5 comporte également une couche interne de matière plastique thermoscellable 16 interposée entre la couche de papier 15 et une couche externe d'aluminium 17 recouverte de préférence d'un vernis pour impression.According to a preferred embodiment, each composite sheet 4, 5 comprises the heat-sealable plastic layer 14 deposited on a paper layer 15 , preferably of high mechanical strength. Preferably, each composite sheet 4, 5 also comprises an inner heat-sealable plastic layer 16 interposed between the paper layer 15 and an outer layer of aluminum 17 preferably coated with a printing varnish.

Dans l'exemple décrit ci-dessus, la gaine formant l'emballage 1 est constituée à partir de deux feuilles composites 4, 5 placées en position superposée l'une contre l'autre et assemblées selon leurs deux bords longitudinaux 6. Bien entendu, il peut être envisagé de réaliser l'emballage 1 sous la forme d'une gaine sans soudure ou bien d'une gaine avec une seule soudure obtenue en repliant une feuille sur elle-même et en soudant les bords libres opposés à la pliure. De même, l'emballage 1 peut être réalisé à partir du pliage d'une feuille sur elle-même en vue d'obtenir les deux feuilles composites superposées 4, 5 qui sont assemblées au niveau de leurs bords pour constituer un sachet comportant une ouverture d'accès à son volume interne qui est fermée par thermosoudage après introduction du produit à conditionner à l'intérieur de l'emballage. D'une manière générale, l'emballage selon l'invention est destiné à comporter au moins deux feuilles composites superposées 4, 5 telles que décrites ci-dessus et qui, assemblées au niveau de leurs bords par exemple par collage, par soudage ou par assemblage mécanique, permettent de constituer un sachet avec une ouverture pour l'introduction du produit à conditionner .L'ouverture du sachet est ensuite fermée par thermosoudage comme expliqué ci-dessus.In the example described above, the sheath forming the package 1 consists of two composite sheets 4, 5 placed in superposed position one against the other and assembled along their two longitudinal edges 6 . Of course, it can be envisaged to make the package 1 in the form of a seamless sheath or a sheath with a single weld obtained by folding a sheet on itself and welding the free edges opposite to the fold. Similarly, the packaging 1 can be made from the folding of a sheet on itself in order to obtain the two superimposed composite sheets 4, 5 which are assembled at their edges to form a bag having an opening access to its internal volume which is closed by heat sealing after introduction of the product to be packaged inside the package. In general, the packaging according to the invention is intended to comprise at least two superimposed composite sheets 4, 5 as described above and which, assembled at their edges, for example by gluing, by welding or by mechanical assembly, allow to constitute a bag with an opening for the introduction of the product to be conditioned .The opening of the bag is then closed by heat sealing as explained above.

Par ailleurs, il peut être prévu que chaque feuille composite 4, 5 comporte une structure différente de celle décrite. Par exemple, il peut être prévu de remplacer la couche interne de matière plastique thermoscellable 16 par l'intermédiaire d'une couche de colle. Il peut être éventuellement prévu d'utiliser un matériau ne comportant pas d'aluminium. Il convient toutefois que chaque feuille composite 4, 5 possède au moins une couche de matière plastique thermoscellable, afin de permettre le thermosoudage des deux feuilles.Moreover, it can be provided that each composite sheet 4, 5 has a different structure from that described. For example, it may be provided to replace the inner layer of heat-sealable plastics material 16 through a layer of glue. It may be possible to use a non-aluminum material. However, each composite sheet 4, 5 should have at least one layer of heat-sealable plastic material, in order to heat-seal the two sheets.

Claims (11)

  1. Packaging for food products intended to comprise two superimposed composite sheets (4, 5) each composite sheet comprising at least one layer of heat sealable plastic material (14) forming the inner surface of the package,
    characterized in that each layer of heat sealable plastic material (14) has BENDTSEN DIN 53108 Roughness of 1200ml/min or less, and in that the layers of heat sealable plastic material (14), between them, have a friction coefficient of 0.5 or less to ensure easy opening of the sleeve.
  2. Packaging as in claim 1, characterized in that each layer of heat sealable plastic material (14) has BENDTSEN DIN 53108 Roughness of between 800 and 1200 ml/min, preferably in the order of 910 ml/min.
  3. Packaging as in claims 1 or 2, characterized in that the layers of heat sealable plastic material (14), between them, have a friction coefficient of between 0.25 and 0.35, preferably in the order of 0.3.
  4. Packaging as in any of claims 1 to 3, characterized in that each layer of heat sealable plastic material (14) is obtained by an operation of polymer extrusion and/or coextrusion.
  5. Packaging as in any of claims 1 to 4, characterized in that each layer of heat sealable plastic material (14) comprises at least one glide agent.
  6. Packaging as in claim 1, characterized in that each composite sheet (4, 5) comprises an outer aluminium layer (17), an inner layer of heat sealable plastic material (16) and a paper layer (15) coated with the layer of heat sealable plastic material (14).
  7. Packaging as in claim 1, characterized in that each composite sheet (4, 5) comprises an outer aluminium layer (17), a layer of glue and a paper layer (15) coated with the layer of heat sealable plastic material (14).
  8. Packaging as in any of claims 1 to 7, characterized in that the material forming the layer of heat sealable plastic material (14) is a low density polyethylene.
  9. Packaging as in any of claims 1 to 8, characterized in that the two superimposed composite sheets (4, 5) form a sleeve.
  10. Packaging as in any of claims 1 to 8, characterized in that the two superimposed composite sheets (4, 5) are obtained by folding one sheet over.
  11. Packaging as in claim 9 or 10, characterized in that the two superimposed composite sheets (4, 5) are assembled at their edges to form a bag comprising an opening to access its inner volume.
EP02356147A 2001-09-14 2002-07-26 Easy to open package for food items Expired - Lifetime EP1293445B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0111900A FR2829750B1 (en) 2001-09-14 2001-09-14 EASY OPENING PACKAGE FOR FOOD PRODUCTS
FR0111900 2001-09-14

Publications (2)

Publication Number Publication Date
EP1293445A1 EP1293445A1 (en) 2003-03-19
EP1293445B1 true EP1293445B1 (en) 2004-09-29

Family

ID=8867282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02356147A Expired - Lifetime EP1293445B1 (en) 2001-09-14 2002-07-26 Easy to open package for food items

Country Status (7)

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US (1) US20030054124A1 (en)
EP (1) EP1293445B1 (en)
AT (1) ATE277830T1 (en)
CA (1) CA2397184A1 (en)
DE (1) DE60201396T2 (en)
ES (1) ES2229070T3 (en)
FR (1) FR2829750B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011050815A1 (en) 2011-06-01 2012-12-06 Deutsche See Gmbh Packaging material for food
DE102018126860A1 (en) * 2018-02-01 2019-08-01 Hydro Aluminium Rolled Products Gmbh Aluminum-paper composite film for food containers, in particular meal trays or folding cartons, process for their production and use thereof
US20230014404A1 (en) * 2019-12-18 2023-01-19 Societe Des Produits Nestle S.A. Container with tab

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB744748A (en) * 1952-03-10 1956-02-15 Valer Flax Improvements in and relating to plastic containers filled with fluid material
JPS5619087Y2 (en) * 1976-04-07 1981-05-07
US4253892A (en) * 1979-02-15 1981-03-03 Flexible Design Packaging Machine Company Method and apparatus for making cushioned shipping bags
US4765999A (en) * 1985-07-26 1988-08-23 Presto Products, Incorporated Polyester/copolyester coextruded packaging film
US5683802A (en) * 1994-03-17 1997-11-04 Hoechst Aktiengesellschaft Heat-seatable or non-heat-sealable, oriented, multilayer polyolefin film comprising ceramic particles
FR2775252B1 (en) 1998-02-26 2000-04-07 Papiers A Paviot PACKAGING PROCESS, ESPECIALLY FOR RETAIL FOOD PRODUCTS, AND PACKAGING THEREOF
ITTO990202U1 (en) * 1999-11-16 2001-05-16 Nuova Poliver Di Oddone Colomb MATERIAL FOR PACKAGING OF FOOD SUBSTANCES, FOR DOMESTIC USE.

Also Published As

Publication number Publication date
CA2397184A1 (en) 2003-03-14
DE60201396T2 (en) 2005-10-13
ATE277830T1 (en) 2004-10-15
FR2829750A1 (en) 2003-03-21
EP1293445A1 (en) 2003-03-19
FR2829750B1 (en) 2003-12-19
DE60201396D1 (en) 2004-11-04
US20030054124A1 (en) 2003-03-20
ES2229070T3 (en) 2005-04-16

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