EP1077187A1 - Fluid-tight container with an absorbing part - Google Patents

Fluid-tight container with an absorbing part Download PDF

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Publication number
EP1077187A1
EP1077187A1 EP00402327A EP00402327A EP1077187A1 EP 1077187 A1 EP1077187 A1 EP 1077187A1 EP 00402327 A EP00402327 A EP 00402327A EP 00402327 A EP00402327 A EP 00402327A EP 1077187 A1 EP1077187 A1 EP 1077187A1
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EP
European Patent Office
Prior art keywords
container according
layer
layers
rigid
container
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Granted
Application number
EP00402327A
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German (de)
French (fr)
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EP1077187B1 (en
Inventor
Didier Marie Charles René Richardot
Roderik Louis Charles Volrath
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Brodart SA
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Brodart SA
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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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids

Definitions

  • a waterproof, stretchable and transparent film wraps the product as closely as possible and is fixed under the tray.
  • One or more labels are stuck on the film for customer information (weight, price per kilo, etc.) and the everything is shelved, allowing customers to freely manipulate each together to make their choice, without the internal fluids due to exudates getting accidentally spread, thus preserving the product from any bloody trace around the product.
  • Another known packaging comprises a more or less hollow semi-rigid base synthetic material (for example crystal polystyrene) and a hollow shell also semi-rigid which covers the product and is snapped onto a flange from the base.
  • This packaging is well suited to pastries because the shell does not touch practically no product and does not crush its fragile parts such as cream Whipped cream, fruit or decorations. A label is then stuck on the shell to customer information.
  • the need for sealing leads to providing trays and laminated bases to ensure gas tightness of their bottom.
  • the sealing is obtained by a film waterproof also tightly attached to the tray or base, so that gas neutral, generally nitrogen, which constitutes the interior atmosphere of the whole, properly confined whatever the constraints that this set undergoes during handling of transport, storage and presence on the shelves.
  • This structure does not allow adding an absorbent layer before closing and it is therefore incompatible with the absorption of exudates.
  • the present invention provides a new solution which makes it possible to obtain both a sealed container structure and comprising absorption means. We thus obtain a set with an extended shelf life thanks to the presence of an atmosphere modified, and an absence of free and visible exudates.
  • the invention relates to a container intended for a wet product, especially food, consisting of or comprising a part extracted from a leaf of very long length made of synthetic material wound in a reel, characterized in that the very long sheet is a complex formed by at least three layers respectively exterior, interior and intermediate, the exterior layer being waterproof liquids, the inner layer being both permeable to liquids and moisture and of weldable type, the intermediate layer taken between the two preceding layers being in an absorbent material intended to retain liquids from the contents and susceptible to reach it through the permeable inner layer.
  • Figure 1 is a schematic view showing a sheet of very long conform to the invention, partly unwound from a coil.
  • Figure 2 is a schematic sectional view of the sheet of Figure 1.
  • Figures 3 and 4 are schematic views showing a container conforming to the invention comprising a semi-rigid preformed shell and a cover produced with a sheet from the coil of Figure 1, when packaging a chicken.
  • Figure 5 is a schematic view showing the entire container and contents ready for installation on a store shelf.
  • FIG. 6 is a schematic view showing a sheet of very long length conforming to the invention, partly unwound from a coil, according to a particular embodiment.
  • FIG. 7 is a schematic sectional view of the sheet of FIG. 6.
  • Figure 8 is a schematic view similar to that of Figure 7, but to a more large scale in order to make the perforations in the inner layer and the absorbent intermediate layer.
  • FIG. 9 is a schematic view showing a container according to the invention, comprising a thermoformed base in the sheet of Figures 6 to 8 and a bell semi-rigid.
  • Figure 10 is a schematic view showing the entire container and contents ready for installation on a store shelf.
  • the sheet 1 is formed of three layers respectively outer 3, intermediate 4 and interior 5 assembled to each other.
  • Layers 3 and 5 are called “exterior” and “interior” by reference to their location on the finished container, as will be explained later.
  • the outer layer 3 is impermeable at least to liquids and possibly to gases. It is advantageously monomaterial but it can also be itself formed by the association of at least two layers (one of which, in particular, may be a layer fence).
  • This layer 3 is, for example, a 12 micron film of polyethylene terephthalate metallic.
  • the intermediate layer 4 is an absorbent layer such as a nonwoven formed of mixed polyester and cellulose fibers, having a specific weight of 45 grams per square meter.
  • the invention is illustrated here by the packaging of a piece of meat ( Figures 3 to 5), layer 4 must be suitable for food contact.
  • the inner layer 5 being intended to be in direct contact with the products to be packaged, it must also have food quality. It must both be permeable to liquid and weldable type, i.e. capable of soldering to itself or to a other part in synthetic material.
  • layer 5 is made permeable by multiples microperforations 6.
  • This layer can be of polyethylene of the so-called "universal” type. because of its ability to weld on any synthetic material, having a thickness of around 55 microns.
  • microperforations 6 are regularly arranged, equidistant from the order of 6 millimeters.
  • the sheet 1 can be used in all cases where a waterproof packaging is desired and simultaneously absorbent, i.e. when the products to be packaged are likely to create exudates or condensation liquids. Indeed, the tightness is given by the outer layer 3, the absorption capacity is given by the intermediate layer 4 and the weldability by the inner layer 5, the liquids coming from the products being absorbed by the fact that the inner layer 5 lets them pass to layer 4 through the perforations 6.
  • Such a sheet 1 can be used alone to directly wrap products.
  • the seller arranges the products on layer 5 of sheet 1, fold it in half over the products and by means of an electrode heating, performs the sealed closure of the assembly by welding to itself the layer 5.
  • the invention therefore makes it possible to produce containers, or envelopes, by the only means from sheet 1.
  • a product here a piece of meat A, is placed directly in a tray 10 in rigid or semi-rigid synthetic material, of a type known per se, having a rim peripheral plane 11 (figure 3). Then the sheet 1 is placed above the tray 10 taking care that the layer 5 is turned towards the inside of said tray 10, it is applied to the rim 11 and welded to the latter by the inner layer 5 (figure 4).
  • Meat exudates pass through microperforations 6 and reach the layer absorbent intermediate 4 which retains and hides them from the view of customers. We understand that these exudates have the possibility of migrating outside and oozing on the edges of sheet 1, especially if layer 4 is saturated.
  • the material constituting the inner layer 5 also flows through the fibers of the absorbent layer 4 and thus makes the sheet 1 waterproof in the welding (or sealing) area.
  • the outer layer 30 is thicker, for example amorphous polypropylene terephthalate of 300 microns, only in the applications described previously, so that it can be thermoformed and have the rigidity of a shape stable.
  • the absorbent layer 40 is crossed by microperforations 41 located opposite the microperforations 6 of the inner layer 5 (for example of oriented polypropylene), what can be achieved by creating microperforations 6 and 41 in one and the same operation, after combining layers 40 and 5.
  • microperforations 41 located opposite the microperforations 6 of the inner layer 5 (for example of oriented polypropylene), what can be achieved by creating microperforations 6 and 41 in one and the same operation, after combining layers 40 and 5.
  • the perforations 6 and 41 are arranged in a regular manner, equidistant from one distance of the order of 3 millimeters.
  • Sheet 1 therefore comprises the three essential layers, namely the layer inner 5 permeable (here thanks to microperforations 6), the intermediate layer absorbent 40 and the outer layer 30.
  • This sheet, or complex, 1 is thermoformed and here takes the form of a tray 50 surrounded by a raised edge 51 and a flange 52 forming a base.
  • a cake B The products to be packaged, here a cake B, are placed on the tray 50, namely directly on the permeable layer 5.
  • a cover 60 is put in place having a bell-shaped upper part 61 and a skirted edge 62 whose inclination is the same as that of the edge 51, so that the edge 62 of the cover 60 applies exactly on the edge 51 of the plate 50.
  • thermoforming of sheet 1 has so many possible applications that the invention has countless opportunities for adaptation.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

The wrapping for moist food products comprises an outer layer (3) of liquid-impermeable material. An intermediate layer (4) of absorbent material traps liquid produced by the food which reaches it via a liquid-permeable inner layer (5)

Description

Beaucoup de produits mis en vente sur des rayons de magasins (en particulier en libre service) ont une humidité importante et lorsqu'ils sont emballés dans des contenants étanches, les exsudats se répandent sur le fond du contenant et les produits trempent constamment dans ces liquides, ce qui est un défaut que l'on cherche à éviter.Many products sold on store shelves (especially free service) have high humidity and when packaged in containers leak-proof, exudates spread over the bottom of the container and the products soak constantly in these liquids, which is a defect that we try to avoid.

Lorsque le contenant est transparent, les clients aperçoivent ces liquides qui donnent au produit emballé un aspect peu attrayant, de nature à empêcher l'acte d'achat.When the container is transparent, customers see these liquids which give the packaged product an unattractive appearance, likely to prevent the act of purchase.

Pour éviter ces inconvénients, on a déjà pensé à placer dans le contenant une matière absorbante. Ainsi, par exemple, les viandes fraíches, en particulier les viandes rouges et les volailles entières, sont placées dans des barquettes rigides ou semi-rigides en matière synthétique qui contiennent un tampon absorbant ou, même, une couche de produit absorbant telle qu'une ouate de cellulose.To avoid these drawbacks, we have already thought of placing in the container a material absorbent. So, for example, fresh meats, especially red meats and whole poultry are placed in rigid or semi-rigid trays synthetic which contain an absorbent pad or even a layer of product absorbent such as cellulose wadding.

Après mise en place du produit dans la barquette, un film étanche, étirable et transparent enveloppe le produit au plus près et est fixé sous la barquette. Une ou plusieurs étiquettes sont collées au film pour l'information du client (poids, prix au kilo, etc.) et le tout est mis en rayon, ce qui permet aux clients de manipuler librement chaque ensemble pour faire leur choix, sans que les liquides internes dus aux exsudats se répandent malencontreusement, préservant ainsi le produit de toute trace sanguinolente autour du produit.After placing the product in the tray, a waterproof, stretchable and transparent film wraps the product as closely as possible and is fixed under the tray. One or more labels are stuck on the film for customer information (weight, price per kilo, etc.) and the everything is shelved, allowing customers to freely manipulate each together to make their choice, without the internal fluids due to exudates getting accidentally spread, thus preserving the product from any bloody trace around the product.

Un autre conditionnement connu comprend une base semi-rigide plus ou moins creuse en matière synthétique (par exemple en polystyrène cristal) et une coque creuse également semi-rigide qui recouvre le produit et se fixe par encliquetage sur un rebord de la base. Ce conditionnement est bien adapté aux pâtisseries car la coque ne touche pratiquement pas le produit et n'écrase pas ses parties fragiles telles que de la crème Chantilly, des fruits ou des décors. Une étiquette est ensuite collée sur la coque pour l'information du client.Another known packaging comprises a more or less hollow semi-rigid base synthetic material (for example crystal polystyrene) and a hollow shell also semi-rigid which covers the product and is snapped onto a flange from the base. This packaging is well suited to pastries because the shell does not touch practically no product and does not crush its fragile parts such as cream Whipped cream, fruit or decorations. A label is then stuck on the shell to customer information.

Ces mesures prises pour absorber l'humidité et les exsudats ne sont pas entièrement satisfaisantes car un tampon prend la couleur de l'exsudat généralement rougeâtre et la couche de produit absorbant colle facilement au produit et nécessite, lors du déballage, un décollage par fragments assez déplaisant. These measures taken to absorb moisture and exudates are not fully satisfactory because a tampon takes on the color of the generally reddish exudate and the layer of absorbent product sticks easily to the product and requires, when unpacking, a rather unpleasant fragment takeoff.

Dans un cas comme dans l'autre, il s'agit d'un élément rapporté dont la mise en place oblige à prévoir une opération de manipulation supplémentaire lors du conditionnement. Mais l'allongement du délai aboutissant à la date limite de consommation a conduit certains professionnels à proposer d'autres procédés par lesquels le produit est conservé sous atmosphère modifiée alors qu'avec les films étirables ou les coques encliquetées le produit est à l'atmosphère ambiante puisqu'il n'y a pas de véritable étanchéité créée entre l'intérieur du contenant et l'atmosphère extérieure.In one case as in the other, it is a reported element whose implementation requires an additional handling operation during packaging. But the lengthening of the deadline leading to the expiry date led to some professionals to suggest other processes by which the product is stored under modified atmosphere whereas with stretch films or snapped shells the product is in the ambient atmosphere since there is no real seal created between the inside of the container and the outside atmosphere.

On connaít également :

  • le produit décrit dans EP 0 295 943 et qui consiste en un coussinet formé de plusieurs couches fixées les unes aux autres selon des lignes longitudinales et transversales pour constituer une marge 9 au format et à la forme voulue pour le coussinet. Celui-ci doit ensuite être placée dans une contenant.
  • le produit décrit dans WO 99 32286 et qui est une barquette thermoformée et la forme représentée sur la figure 3 montre que cette barquette ne peut pas être operculée car elle ne présente aucun rebord supérieur plan. la très faible profondeur de la barquette s'explique par le fait qu'elle est destinée à être enveloppée après avoir reçu le produit à emballer, tel qu'une poulet.
We also know:
  • the product described in EP 0 295 943 and which consists of a pad formed of several layers fixed to each other along longitudinal and transverse lines to form a margin 9 in the desired format and shape for the pad. This must then be placed in a container.
  • the product described in WO 99 32286 and which is a thermoformed tray and the shape shown in Figure 3 shows that this tray can not be sealed because it has no upper flat edge. the very shallow depth of the tray is explained by the fact that it is intended to be wrapped after having received the product to be packaged, such as a chicken.

Alors, la nécessité de l'étanchéité conduit à prévoir des barquettes et bases pelliplaquées pour assurer l'étanchéité au gaz de leur fond. L'operculage est obtenu par un film étanche fixé de manière également étanche à la barquette ou base, afin que le gaz neutre, généralement de l'azote, qui constitue l'atmosphère intérieure de l'ensemble soit correctement confiné quelles que soient les contraintes que subit cet ensemble au cours des manipulations de transport, de stockage et de présence sur les rayons.So, the need for sealing leads to providing trays and laminated bases to ensure gas tightness of their bottom. The sealing is obtained by a film waterproof also tightly attached to the tray or base, so that gas neutral, generally nitrogen, which constitutes the interior atmosphere of the whole, properly confined whatever the constraints that this set undergoes during handling of transport, storage and presence on the shelves.

Cette structure ne permet pas d'ajouter une couche absorbante avant la fermeture et elle est donc incompatible avec l'absorption des exsudats.This structure does not allow adding an absorbent layer before closing and it is therefore incompatible with the absorption of exudates.

La présente invention propose une solution nouvelle qui permet d'obtenir à la fois une structure de contenant étanche et comprenant des moyens d'absorption. On obtient ainsi un ensemble à durée de conservation prolongée grâce à la présence d'une atmosphère modifiée, et une absence d'exsudats libres et visibles. The present invention provides a new solution which makes it possible to obtain both a sealed container structure and comprising absorption means. We thus obtain a set with an extended shelf life thanks to the presence of an atmosphere modified, and an absence of free and visible exudates.

A cette fin, l'invention a pour objet un contenant destiné à un produit humide, notamment alimentaire, constituée par ou comprenant une partie extraite d'une feuille de grande longueur en matière synthétique enroulée en bobine, caractérisé en ce que la feuille de grande longueur est un complexe formé d'au moins trois couches respectivement extérieure, intérieure et intermédiaire, la couche extérieure étant étanche aux liquides, la couche intérieure étant à la fois perméable aux liquides et à l'humidité et de type soudable, la couche intermédiaire prise entre les deux couches précédentes étant en un matériau absorbant destiné à retenir les liquides issus du contenu et susceptibles de l'atteindre à travers la couche intérieure perméable.To this end, the invention relates to a container intended for a wet product, especially food, consisting of or comprising a part extracted from a leaf of very long length made of synthetic material wound in a reel, characterized in that the very long sheet is a complex formed by at least three layers respectively exterior, interior and intermediate, the exterior layer being waterproof liquids, the inner layer being both permeable to liquids and moisture and of weldable type, the intermediate layer taken between the two preceding layers being in an absorbent material intended to retain liquids from the contents and susceptible to reach it through the permeable inner layer.

Selon d'autres caractéristiques de l'invention :

  • Figure 00030001
    la couche extérieure est monomatière ;
  • la couche extérieure est en une matière synthétique métallisée ;
  • la couche intermédiaire est en matériau non tissé ;
  • la couche intermédiaire est formée par un mélange de fibres de polyester et de cellulose ;
  • la couche intermédiaire est traversée de multiples perforations ;
  • les perforations de la couche intermédiaire sont équidistantes ;
  • la couche intérieure est traversée de multiples perforations ;
  • les perforations de la couche intérieure sont équidistantes ;
  • les couches intermédiaire et intérieure sont toutes deux traversées de multiples perforations situées en regard les unes des autres ;
  • les couches extérieure et intermédiaire sont fixées l'une à l'autre ;
  • les couches extérieure et intermédiaire sont fixées l'une à l'autre selon toute leur surface ;
  • les couches intérieure et intermédiaire sont fixées l'une à l'autre par zones ;
  • le contenant comprenant au moins une partie creuse rigide ou semi-rigide telle qu'une barquette, une cloche ou une coque, la feuille de grande longueur est un complexe souple formant un opercule de la partie creuse par soudure sur celle-ci de la couche intérieure perméable ;
  • la feuille de grande longueur est un complexe dont la couche extérieure étanche aux liquides est plus épaisse que les couches intermédiaire et intérieure, cette feuille étant de type thermoformable afin de constituer une partie de contenant rigide ou semi-rigide telle qu'un plateau, un socle ou analogue, à laquelle une partie creuse rigide ou semi-rigide telle qu'un couvercle, une cloche, une coque ou analogue est fixée par des moyens avantageusement amovibles tels qu'un blocage mécanique élastique.
    • According to other characteristics of the invention:
  • Figure 00030001
    the outer layer is single-material;
  • the outer layer is made of a metallized synthetic material;
  • the intermediate layer is made of non-woven material;
  • the intermediate layer is formed by a mixture of polyester and cellulose fibers;
  • the intermediate layer is crossed by multiple perforations;
  • the perforations in the intermediate layer are equidistant;
  • the inner layer is crossed by multiple perforations;
  • the perforations of the inner layer are equidistant;
  • the intermediate and interior layers are both crossed by multiple perforations located opposite one another;
  • the outer and intermediate layers are fixed to each other;
  • the outer and intermediate layers are fixed to each other along their entire surface;
  • the inner and intermediate layers are fixed to each other by zones;
  • the container comprising at least one rigid or semi-rigid hollow part such as a tray, a bell or a shell, the very long sheet is a flexible complex forming a cover of the hollow part by welding on the latter of the layer permeable interior;
  • the very long sheet is a complex whose liquid-tight outer layer is thicker than the intermediate and inner layers, this sheet being of the thermoformable type in order to constitute a part of rigid or semi-rigid container such as a tray, a base or the like, to which a rigid or semi-rigid hollow part such as a cover, a bell, a shell or the like is fixed by advantageously removable means such as an elastic mechanical blocking.

    • L'invention sera mieux comprise par la description détaillée ci-après faite en référence au dessin annexé. Bien entendu, la description et le dessin ne sont donnés qu'à titre d'exemple indicatif et non limitatif.The invention will be better understood from the detailed description below given with reference in the attached drawing. Of course, the description and the drawing are only given as indicative and non-limiting example.

    La figure 1 est une vue schématique montrant une feuille de grande longueur conforme à l'invention, en partie déroulée d'une bobine.Figure 1 is a schematic view showing a sheet of very long conform to the invention, partly unwound from a coil.

    La figure 2 est une vue schématique en coupe de la feuille de la figure 1.Figure 2 is a schematic sectional view of the sheet of Figure 1.

    Les figures 3 et 4 sont des vues schématiques montrant un contenant conforme à l'invention comprenant une coque semi-rigide préformée et un opercule réalisé avec une feuille issue de la bobine de la figure 1, lors du conditionnement d'un poulet.Figures 3 and 4 are schematic views showing a container conforming to the invention comprising a semi-rigid preformed shell and a cover produced with a sheet from the coil of Figure 1, when packaging a chicken.

    La figure 5 est une vue schématique montrant l'ensemble du contenant et du contenu prêt à sa mise en place sur un rayon de magasin.Figure 5 is a schematic view showing the entire container and contents ready for installation on a store shelf.

    La figure 6 est une vue schématique montrant une feuille de grande longueur conforme à l'invention, en partie déroulée d'une bobine, selon un mode de réalisation particulier.FIG. 6 is a schematic view showing a sheet of very long length conforming to the invention, partly unwound from a coil, according to a particular embodiment.

    La figure 7 est une vue schématique en coupe de la feuille de la figure 6.FIG. 7 is a schematic sectional view of the sheet of FIG. 6.

    La figure 8 est une vue schématique analogue à celle de la figure 7, mais à une plus grande échelle afin de rendre plus visibles les perforations de la couche intérieure et de la couche intermédiaire absorbante.Figure 8 is a schematic view similar to that of Figure 7, but to a more large scale in order to make the perforations in the inner layer and the absorbent intermediate layer.

    La figure 9 est une vue schématique montrant un contenant conforme à l'invention, comprenant un socle thermoformé dans la feuille des figures 6 à 8 ainsi qu'une cloche semi-rigide.FIG. 9 is a schematic view showing a container according to the invention, comprising a thermoformed base in the sheet of Figures 6 to 8 and a bell semi-rigid.

    La figure 10 est une vue schématique montrant l'ensemble du contenant et du contenu prêt à sa mise en place sur un rayon de magasin.Figure 10 is a schematic view showing the entire container and contents ready for installation on a store shelf.

    En se reportant aux figures 1 et 2, on voit une feuille de grande longueur 1 conforme à l'invention et l'on voit également que cette feuille 1 est stockée, transportée et utilisée sous forme d'une bobine 2. Referring to Figures 1 and 2, we see a very long sheet 1 conforming to the invention and we also see that this sheet 1 is stored, transported and used in the form of a coil 2.

    La feuille 1 est formée de trois couches respectivement extérieure 3, intermédiaire 4 et intérieure 5 assemblées l'une à l'autre.The sheet 1 is formed of three layers respectively outer 3, intermediate 4 and interior 5 assembled to each other.

    Les couches 3 et 5 sont dénommées " extérieure " et " intérieure " par référence à leur emplacement sur le contenant terminé, comme cela sera explicité plus loin.Layers 3 and 5 are called "exterior" and "interior" by reference to their location on the finished container, as will be explained later.

    La couche extérieure 3 est étanche au moins aux liquides et éventuellement aux gaz. Elle est avantageusement monomatière mais elle peut aussi être elle-même formée par l'association d'au moins deux couches (dont une, notamment, peut être une couche barrière).The outer layer 3 is impermeable at least to liquids and possibly to gases. It is advantageously monomaterial but it can also be itself formed by the association of at least two layers (one of which, in particular, may be a layer fence).

    Cette couche 3 est, par exemple, un film de 12 microns en polyéthylène téréphtalate métallisé.This layer 3 is, for example, a 12 micron film of polyethylene terephthalate metallic.

    La couche intermédiaire 4 est une couche absorbante telle qu'un non tissé formé de fibres mélangées de polyester et de cellulose, ayant un poids spécifique de 45 grammes au mètre carré. L'invention étant illustrée ici par l'emballage d'un morceau de viande (figures 3 à 5), la couche 4 doit être apte au contact alimentaire.The intermediate layer 4 is an absorbent layer such as a nonwoven formed of mixed polyester and cellulose fibers, having a specific weight of 45 grams per square meter. The invention is illustrated here by the packaging of a piece of meat (Figures 3 to 5), layer 4 must be suitable for food contact.

    La couche intérieure 5 étant destinée à être au contact direct des produits à emballer, elle doit également avoir la qualité alimentaire. Elle doit, à la fois être perméable aux liquides et de type soudable, c'est-à-dire capable de se souder à elle-même ou à une autre partie en matière synthétique.The inner layer 5 being intended to be in direct contact with the products to be packaged, it must also have food quality. It must both be permeable to liquid and weldable type, i.e. capable of soldering to itself or to a other part in synthetic material.

    Ici, on a représenté le cas où la couche 5 est rendue perméable par de multiples microperforations 6. Cette couche peut être en polyéthylène de type dit " universel " en raison de son aptitude à la soudure sur toute matière synthétique, ayant une épaisseur de l'ordre de 55 microns.Here, we have represented the case where layer 5 is made permeable by multiples microperforations 6. This layer can be of polyethylene of the so-called "universal" type. because of its ability to weld on any synthetic material, having a thickness of around 55 microns.

    Les microperforations 6 sont régulièrement disposées, équidistantes de l'ordre de 6 millimètres.The microperforations 6 are regularly arranged, equidistant from the order of 6 millimeters.

    La feuille 1 peut être utilisée dans tous les cas où l'on souhaite un emballage étanche et simultanément absorbant, c'est-à-dire quand les produits à emballer sont susceptibles de créer des exsudats ou des liquides de condensation. En effet, l'étanchéité est donnée par la couche extérieure 3, la faculté d'absorption est donnée par la couche intermédiaire 4 et la soudabilité par la couche intérieure 5, les liquides provenant des produits étant absorbés du fait que la couche intérieure 5 les laisse passer jusqu'à la couche 4 par les perforations 6.The sheet 1 can be used in all cases where a waterproof packaging is desired and simultaneously absorbent, i.e. when the products to be packaged are likely to create exudates or condensation liquids. Indeed, the tightness is given by the outer layer 3, the absorption capacity is given by the intermediate layer 4 and the weldability by the inner layer 5, the liquids coming from the products being absorbed by the fact that the inner layer 5 lets them pass to layer 4 through the perforations 6.

    Une telle feuille 1 peut être utilisée seule pour envelopper directement des produits. Such a sheet 1 can be used alone to directly wrap products.

    Il peut s'agir d'un conditionnement préalable à la mise en rayon, auquel cas les produits sont placés sur la couche intérieure 5, puis cette dernière est soudée à elle-même pour confiner les produits de manière étanche.It may be a packaging prior to shelving, in which case the products are placed on the inner layer 5, then the latter is welded to itself to confine products tightly.

    Il peut s'agir aussi de l'emballage consécutif au choix des produits dits " à la coupe ", par un client : viande, fromage, etc. Le vendeur dispose les produits sur la couche 5 de la feuille 1, replie celle-ci en deux au-dessus des produits et au moyen d'une électrode chauffante, effectue la fermeture étanche de l'ensemble par soudure à elle-même de la couche 5.It may also be the packaging consecutive to the choice of so-called "cut" products, by a customer: meat, cheese, etc. The seller arranges the products on layer 5 of sheet 1, fold it in half over the products and by means of an electrode heating, performs the sealed closure of the assembly by welding to itself the layer 5.

    Ces deux méthodes de conditionnement sont bien connues en elles-mêmes et ne nécessitent pas plus de détails.These two conditioning methods are well known in themselves and do not require no more details.

    L'invention permet donc de réaliser des contenants, ou enveloppes, par le seul moyen de la feuille 1.The invention therefore makes it possible to produce containers, or envelopes, by the only means from sheet 1.

    Mais l'invention s'applique également à l'operculage de parties creuses telles que des barquettes, ce que l'on a représenté sur les figures 3 à 5.However, the invention also applies to the sealing of hollow parts such as trays, which are shown in Figures 3 to 5.

    Un produit, ici un morceau de viande A, est placé directement dans une barquette 10 en matière synthétique rigide ou semi-rigide, de type connu en soi, présentant un rebord périphérique plan 11 (figure 3). Puis la feuille 1 est disposée au-dessus de la barquette 10 en prenant soin que la couche 5 soit tournée vers l'intérieur de ladite barquette 10, elle est appliquée sur le rebord 11 et soudée à ce dernier par la couche intérieure 5 (figure 4).A product, here a piece of meat A, is placed directly in a tray 10 in rigid or semi-rigid synthetic material, of a type known per se, having a rim peripheral plane 11 (figure 3). Then the sheet 1 is placed above the tray 10 taking care that the layer 5 is turned towards the inside of said tray 10, it is applied to the rim 11 and welded to the latter by the inner layer 5 (figure 4).

    Ensuite, l'ensemble du contenant 1-10 et du contenu A est retourné afin que le morceau de viande A repose non sur le fond de la barquette 10 mais sur la couche 5 de la feuille 1 (figure 5).Then the entire container 1-10 and content A is turned over so that the piece of meat A rests not on the bottom of the tray 10 but on the layer 5 of the sheet 1 (Figure 5).

    Les exsudats de la viande traversent les microperforations 6 et atteignent la couche intermédiaire absorbante 4 qui les retient et les cache à la vue des clients. On comprend que ces exsudats ont la possibilité de migrer à l'extérieur et de suinter sur les bords de la feuille 1, surtout si la couche 4 est saturée.Meat exudates pass through microperforations 6 and reach the layer absorbent intermediate 4 which retains and hides them from the view of customers. We understand that these exudates have the possibility of migrating outside and oozing on the edges of sheet 1, especially if layer 4 is saturated.

    Ce défaut serait disqualifiant et l'invention prévoit sa disparition en exerçant une forte pression des électrodes de soudage sur la marge la plus extérieure de la feuille 1, sur le rebord 11 de la barquette 10, ce que l'on a représenté, de manière évidemment très schématique, sur la figure 4 sous forme de méplats 7 qui sont plus visible sur la figure 5. This defect would be disqualifying and the invention provides for its disappearance by exerting a strong pressure of the welding electrodes on the outermost margin of sheet 1, on the rim 11 of the tray 10, which is shown, obviously very schematic, in FIG. 4 in the form of flats 7 which are more visible in FIG. 5.

    On voit que l'on écrase la couche intermédiaire 4 selon toute la périphérie du rebord 11 et l'on obture ainsi complètement la coupe franche des bords de la feuille 1, en provoquant la soudure de la couche extérieure étanche 3 sur la couche intérieure 5 qui n'est plus perméable à l'endroit de sa soudure du fait de la disparition des microperforations 6 due au fluage de la matière ramollie.We see that we crush the intermediate layer 4 along the entire periphery of the rim 11 and one thus completely closes the clean cut of the edges of the sheet 1, in causing the sealing of the waterproof outer layer 3 to the inner layer 5 which is no longer permeable to the place of its weld due to the disappearance of microperforations 6 due to the creep of the softened material.

    A noter qu'au moment de cette soudure, la matière constitutive de la couche intérieure 5 flue aussi à travers les fibres de la couche absorbante 4 et rend ainsi la feuille 1 étanche dans la zone de soudure (ou scellage).Note that at the time of this welding, the material constituting the inner layer 5 also flows through the fibers of the absorbent layer 4 and thus makes the sheet 1 waterproof in the welding (or sealing) area.

    Lorsqu'on fabrique la feuille 1, on assemble les couches 3 et 4 selon toute leur surface et l'on assemble les couches 4 et 5 selon des zones qui, ici, sont de fines bandes 8 de colle connue dans l'industrie sous le nom de " hot melt " (figure 2). De la sorte, on obtient une feuille unitaire, sans obturer complètement des microperforations 6, ce qui conserve à la couche 5 sa perméabilité indispensable.When making sheet 1, we assemble layers 3 and 4 along their entire surface and layers 4 and 5 are assembled according to zones which, here, are thin strips 8 of glue known in the industry under the name of "hot melt" (FIG. 2). In this way, we obtains a unitary sheet, without completely sealing microperforations 6, which retains layer 5 its essential permeability.

    En se reportant maintenant aux figures 6 à 8, on voit un autre mode de réalisation de l'invention selon lequel la couche extérieure 30 est plus épaisse, par exemple du polypropylène téréphtalate amorphe de 300 microns, que dans les applications décrites précédemment, afin de pouvoir être thermoformée et avoir la rigidité d'une forme stable.Referring now to Figures 6 to 8, we see another embodiment of the invention that the outer layer 30 is thicker, for example amorphous polypropylene terephthalate of 300 microns, only in the applications described previously, so that it can be thermoformed and have the rigidity of a shape stable.

    Sur ces figures 6 à 8, les mêmes éléments portent les mêmes références que sur les figures 1 à 5 et ces éléments ne seront donc pas décrits à nouveau.In these figures 6 to 8, the same elements have the same references as on the Figures 1 to 5 and these elements will therefore not be described again.

    La couche absorbante 40 est traversée de microperforations 41 situées en regard des microperforations 6 de la couche intérieure 5 (par exemple en polypropylène orienté), ce que l'on peut obtenir en créant les microperforations 6 et 41 en une seule et même opération, après réunion des couches 40 et 5.The absorbent layer 40 is crossed by microperforations 41 located opposite the microperforations 6 of the inner layer 5 (for example of oriented polypropylene), what can be achieved by creating microperforations 6 and 41 in one and the same operation, after combining layers 40 and 5.

    Les perforations 6 et 41 sont disposées de manière régulière, équidistantes d'une distance de l'ordre de 3 millimètres.The perforations 6 and 41 are arranged in a regular manner, equidistant from one distance of the order of 3 millimeters.

    La feuille 1 comprend donc les trois couches indispensables, à savoir la couche intérieure 5 perméable (ici grâce aux microperforations 6), la couche intermédiaire absorbante 40 et la couche extérieure 30.Sheet 1 therefore comprises the three essential layers, namely the layer inner 5 permeable (here thanks to microperforations 6), the intermediate layer absorbent 40 and the outer layer 30.

    Cette feuille, ou complexe, 1 est thermoformée et prend ici la forme d'un plateau 50 entouré d'un bord de surélévation 51 et d'un rebord 52 formant embase. This sheet, or complex, 1 is thermoformed and here takes the form of a tray 50 surrounded by a raised edge 51 and a flange 52 forming a base.

    Les produits à emballer, ici un gâteau B, sont posés sur le plateau 50, à savoir directement sur la couche perméable 5. Ensuite, on met en place un couvercle 60 présentant une partie supérieure en cloche 61 et un bord en jupe 62 dont l'inclinaison est la même que celle du bord 51, de sorte que le bord 62 du couvercle 60 s'applique exactement sur le bord 51 du plateau 50.The products to be packaged, here a cake B, are placed on the tray 50, namely directly on the permeable layer 5. Next, a cover 60 is put in place having a bell-shaped upper part 61 and a skirted edge 62 whose inclination is the same as that of the edge 51, so that the edge 62 of the cover 60 applies exactly on the edge 51 of the plate 50.

    Ils sont fixés l'un à l'autre par tous moyens connus : collage léger, agrafes, etc.They are fixed to each other by any known means: light bonding, staples, etc.

    Bien entendu, on peut aussi utiliser un encliquetage mécanique permettant à la fois le maintien correct du couvercle 60 sur le plateau 50 et son retrait facile, sans outil ni manipulation délicate.Of course, one can also use a mechanical snap allowing both the correct retention of the cover 60 on the plate 50 and its easy removal, without tools or delicate handling.

    On comprend qu'ici encore les exsudats et autres liquides provenant des produits sont absorbés par la couche intermédiaire 40 et cela d'autant plus efficacement qu'elle est elle-même perforée pour augmenter l'effet de capillarité qui est le sien. L'étanchéité entre l'intérieur, à savoir le dessus du plateau 50 surmonté du couvercle 60, et l'extérieur est assurée par la couche 30.It is understood that here again the exudates and other liquids from the products are absorbed by the intermediate layer 40 and this all the more effectively as it is itself perforated to increase the capillary effect which is hers. Sealing between the interior, namely the top of the tray 50 surmounted by the cover 60, and the exterior is provided by layer 30.

    On a décrit en regard des figures 9 et 10 le conditionnement d'un gâteau mais il va de soi que le même principe peut être adopté pour toutes sortes d'autres produits, notamment des fromages présentés à la vente sur un plateau et recouverts, protégés, par une cloche.The packaging of a cake has been described with reference to FIGS. 9 and 10, but it goes from the same principle can be adopted for all kinds of other products, in particular cheeses presented for sale on a tray and covered, protected by a bell.

    Le thermoformage de la feuille 1 a tellement d'applications possibles que l'invention a d'innombrables opportunités d'adaptation.The thermoforming of sheet 1 has so many possible applications that the invention has countless opportunities for adaptation.

    La description ci-dessus, qui ne peut être exhaustive, montre que l'invention permet différents modes de réalisation dont on a décrit les principaux, eux mêmes susceptibles de variantes de toutes sortes : utilisation exclusive et directe de la feuille de grande longueur, operculage (ou fermeture) de tout contenant, thermoformage et association éventuelle avec un élément additionnel : couvercle, cloche, etc.The above description, which cannot be exhaustive, shows that the invention allows different embodiments of which the main ones have been described, themselves susceptible of variants of all kinds: exclusive and direct use of the large sheet length, sealing (or closing) of any container, thermoforming and association possible with an additional element: cover, bell, etc.

    Claims (15)

    Contenant destiné à un produit humide, notamment alimentaire, constituée par ou comprenant une partie extraite d'une feuille de grande longueur en matière synthétique enroulée en bobine, caractérisé en ce que la feuille de grande longueur (1) est un complexe formé d'au moins trois couches respectivement extérieure, intérieure et intermédiaire, la couche extérieure (3-30) étant étanche aux liquides, la couche intérieure (5) étant à la fois perméable aux liquides et à l'humidité et de type soudable, la couche intermédiaire (4-40) prise entre les deux couches précédentes (3-30 et 5) étant en un matériau absorbant destiné à retenir les liquides issus du contenu (A, B) et susceptibles de l'atteindre à travers la couche intérieure perméable (5).Container intended for a wet product, in particular a food product, constituted by or comprising a part extracted from a very long sheet of synthetic material wound in a reel, characterized in that the very long sheet (1) is a complex formed from at least three layers, respectively outer, inner and intermediate, the outer layer (3-30) being impermeable to liquids, the inner layer (5) being both permeable to liquids and to humidity and of weldable type, the intermediate layer ( 4-40) taken between the two previous layers (3-30 and 5) being made of an absorbent material intended to retain liquids from the content (A, B) and capable of reaching it through the permeable inner layer (5) . Contenant selon la revendication 1, caractérisé en ce que la couche extérieure (3-30) est monomatière.Container according to claim 1, characterized in that the outer layer (3-30) is single-material. Contenant selon la revendication 1, caractérisé en ce que la couche extérieure (3) est en une matière synthétique métallisée.Container according to claim 1, characterized in that the outer layer (3) is made of a metallized synthetic material. Contenant selon la revendication 1, caractérisé en ce que la couche intermédiaire (4-40) est en matériau non tissé.Container according to claim 1, characterized in that the intermediate layer (4-40) is made of non-woven material. Contenant selon la revendication 4, caractérisé en ce que la couche intermédiaire (4-40) est formée par un mélange de fibres de polyester et de cellulose.Container according to claim 4, characterized in that the intermediate layer (4-40) is formed by a mixture of polyester and cellulose fibers. Contenant selon la revendication 1, caractérisé en ce que la couche intermédiaire (40) est traversée de multiples perforations (41).Container according to claim 1, characterized in that the intermediate layer (40) is traversed by multiple perforations (41). Contenant selon la revendication 6, caractérisé en ce que les perforations (41) sont équidistantes.Container according to claim 6, characterized in that the perforations (41) are equidistant. Contenant selon la revendication 1, caractérisé en ce que la couche intérieure (5) est traversée de multiples perforations (6).Container according to claim 1, characterized in that the inner layer (5) is traversed by multiple perforations (6). Contenant selon la revendication 8, caractérisé en ce que les perforations (6) sont équidistantes.Container according to claim 8, characterized in that the perforations (6) are equidistant. Contenant selon les revendications 6 et 8 ci-dessus, caractérisé en ce que les couches intermédiaire (40) et intérieure (5) sont toutes deux traversées de multiples perforations (41 et 6) situées en regard les unes des autres. Container according to claims 6 and 8 above, characterized in that the intermediate (40) and inner (5) layers are both crossed by multiple perforations (41 and 6) located opposite each other. Contenant selon la revendication 1, caractérisé en ce que les couches extérieure (3-30) et intermédiaire (4-40) sont fixées l'une à l'autre.Container according to claim 1, characterized in that the outer (3-30) and intermediate (4-40) layers are fixed to one another. Contenant selon la revendication 11, caractérisé en ce que les couches extérieure (3-30) et intermédiaire (4-40) sont fixées l'une à l'autre selon toute leur surface.Container according to claim 11, characterized in that the outer (3-30) and intermediate (4-40) layers are fixed to each other along their entire surface. Contenant selon la revendication 1, caractérisé en ce que les couches intérieure (5) et intermédiaire (4-40) sont fixées l'une à l'autre par zones (8).Container according to claim 1, characterized in that the inner (5) and intermediate (4-40) layers are fixed to each other by zones (8). Contenant selon la revendication 1, caractérisé en ce que comprenant au moins une partie creuse rigide ou semi-rigide telle qu'une barquette (10), une cloche (60) ou une coque, la feuille de grande longueur (1) est un complexe souple formant un opercule de la partie creuse (10) par soudure sur celle-ci de la couche intérieure perméable (5).Container according to claim 1, characterized in that comprising at least one rigid or semi-rigid hollow part such as a tray (10), a bell (60) or a shell, the very long sheet (1) is a complex flexible forming a cover of the hollow part (10) by welding thereon the permeable inner layer (5). Contenant selon la revendication 1, caractérisé en ce que la feuille de grande longueur (1) est un complexe dont la couche extérieure (30) étanche aux liquides est plus épaisse que les couches intermédiaire (5) et intérieure (40), cette feuille (1) étant de type thermoformable afin de constituer une partie de contenant rigide ou semi-rigide telle qu'un plateau (50), un socle ou analogue, à laquelle une partie creuse rigide ou semi-rigide telle qu'un couvercle (60), une cloche, une coque ou analogue est fixée par des moyens avantageusement amovibles tels qu'un blocage mécanique élastique.Container according to claim 1, characterized in that the very long sheet (1) is a complex in which the outer liquid-tight layer (30) is thicker than the intermediate (5) and inner (40) layers, this sheet ( 1) being of the thermoformable type in order to constitute a rigid or semi-rigid container part such as a tray (50), a base or the like, to which a rigid or semi-rigid hollow part such as a cover (60) , a bell, a shell or the like is fixed by advantageously removable means such as an elastic mechanical blocking.
    EP20000402327 1999-08-19 2000-08-21 Fluid-tight and absorbing foil for forming a part of a container Expired - Lifetime EP1077187B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9910649 1999-08-19
    FR9910649A FR2797623B1 (en) 1999-08-19 1999-08-19 WATERPROOF CONTAINER FOR A WET PRODUCT, ESPECIALLY FOOD, COMPRISING AN ABSORBENT PART

    Publications (2)

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    EP1077187A1 true EP1077187A1 (en) 2001-02-21
    EP1077187B1 EP1077187B1 (en) 2004-02-25

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    EP20000402327 Expired - Lifetime EP1077187B1 (en) 1999-08-19 2000-08-21 Fluid-tight and absorbing foil for forming a part of a container

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    DE (1) DE60008465T2 (en)
    FR (1) FR2797623B1 (en)

    Cited By (5)

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    Publication number Priority date Publication date Assignee Title
    WO2002074656A1 (en) * 2001-03-15 2002-09-26 Showa Denko Plastic Products Co,, Ltd. Liquid-absorbing sheet for packaging perishable food
    EP1418136A1 (en) * 2002-11-08 2004-05-12 SCHMIDT, Heinz-Dieter Package for asparagus
    GB2560825A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Food packaging
    GB2560719A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Flexible food packaging
    GB2560718A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Food packaging container

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE102012017156B4 (en) * 2012-08-30 2015-09-03 Michael Beushausen Condensate storage for the arrangement above steaming, warm food

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    EP0090507A1 (en) * 1982-03-22 1983-10-05 Mobil Oil Corporation Condensate absorbant fast food container and method of packaging
    EP0295943A2 (en) 1987-06-19 1988-12-21 Sekisui Jushi Kabushiki Kaisha Food mat
    EP0852206A1 (en) * 1997-01-06 1998-07-08 Mitsubishi Gas Chemical Company, Inc. Package and packaging method for aqueous liquid materials
    WO1999032286A1 (en) 1997-12-19 1999-07-01 The Moore Company Integral food tray

    Patent Citations (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0090507A1 (en) * 1982-03-22 1983-10-05 Mobil Oil Corporation Condensate absorbant fast food container and method of packaging
    EP0295943A2 (en) 1987-06-19 1988-12-21 Sekisui Jushi Kabushiki Kaisha Food mat
    EP0852206A1 (en) * 1997-01-06 1998-07-08 Mitsubishi Gas Chemical Company, Inc. Package and packaging method for aqueous liquid materials
    WO1999032286A1 (en) 1997-12-19 1999-07-01 The Moore Company Integral food tray

    Cited By (5)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2002074656A1 (en) * 2001-03-15 2002-09-26 Showa Denko Plastic Products Co,, Ltd. Liquid-absorbing sheet for packaging perishable food
    EP1418136A1 (en) * 2002-11-08 2004-05-12 SCHMIDT, Heinz-Dieter Package for asparagus
    GB2560825A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Food packaging
    GB2560719A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Flexible food packaging
    GB2560718A (en) * 2017-03-20 2018-09-26 Havi Global Solutions Europe Ltd Food packaging container

    Also Published As

    Publication number Publication date
    DE60008465D1 (en) 2004-04-01
    EP1077187B1 (en) 2004-02-25
    FR2797623B1 (en) 2002-04-05
    FR2797623A1 (en) 2001-02-23
    DE60008465T2 (en) 2005-01-13

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