EP1063174B1 - Tamper proof package and method of manufacturing it - Google Patents

Tamper proof package and method of manufacturing it Download PDF

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Publication number
EP1063174B1
EP1063174B1 EP99490015A EP99490015A EP1063174B1 EP 1063174 B1 EP1063174 B1 EP 1063174B1 EP 99490015 A EP99490015 A EP 99490015A EP 99490015 A EP99490015 A EP 99490015A EP 1063174 B1 EP1063174 B1 EP 1063174B1
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EP
European Patent Office
Prior art keywords
zone
package
weld bead
temperature
packaging
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
EP99490015A
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German (de)
French (fr)
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EP1063174A1 (en
Inventor
Bernard Beeuwaert
Jani Vuorenpaa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wipak Gryspeert SA
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Wipak Gryspeert SA
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Application filed by Wipak Gryspeert SA filed Critical Wipak Gryspeert SA
Priority to ES99490015T priority Critical patent/ES2220023T3/en
Priority to DE69916439T priority patent/DE69916439T2/en
Priority to AT99490015T priority patent/ATE264236T1/en
Priority to DK99490015T priority patent/DK1063174T3/en
Priority to EP99490015A priority patent/EP1063174B1/en
Publication of EP1063174A1 publication Critical patent/EP1063174A1/en
Application granted granted Critical
Publication of EP1063174B1 publication Critical patent/EP1063174B1/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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2096—Adhesive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • 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
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855—Peelable seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure

Definitions

  • the present invention relates to packaging with warranty inviolability for the packaging of food and non-food products, and solid, liquid, powder or pasty medical products such as dairy products, cold meats, meats, hardware, coffee, cookies.
  • the invention is also relating to the packaging manufacturing process with guarantee of inviolability.
  • Packaging for the packaging of food products, not food or medical products currently on the market are made up essentially a container and a cover, these two elements being assembled by sealing, once the food or medical product has been packaged, and after injecting a neutral gas to allow the conservation of said product for several months.
  • the different operations to constitute the packaging consist of make the container initially under rolls of film, to fill this container with product food or medical, cover the assembly with a seal, then seal the seal on the container.
  • the sealing of the lid on the container reveals a bead of weld constituting the connecting element of the container and the lid.
  • packaging is a sachet, this can be done either directly during product packaging, or previously prefabricated in industry then brought to the packaging machine where it is filled with product and then sealed then.
  • the first type of packaging has the main function of packaging the product. and allow its conservation for several months. Once the consumer opens the packaging to extract the food product, it must then consume completely the quantity of products packaged or else use preservative films to store the rest of the product in the refrigerator
  • the second type of packaging has the same function allowing keep the product for several months but, moreover, it allows you to use it several times the packaging after the first opening.
  • the cord solder detaches completely from the packaging on one of its releasing surfaces, then a adhesive layer which then makes it possible to close said packaging several times in the event that the user would like to consume the packaged product in several installments.
  • Patent application WO 97/19867 describes a packaging of this second type, which corresponds to preamble of claim 1.
  • a more dangerous disadvantage for the consumer is that the consumer may consume perishable food or medical products which may cause food poisoning. Indeed, used packaging no longer has preservative gas preventing the product from degrading.
  • the present invention aims to remedy all these drawbacks and one main goals is to make a packaging with a tamper-evident device to clearly visualize that the packaging has been opened, and thus avoid customers find used products on the shelves or buy consumed products, or even even out of date without anyone noticing.
  • the present invention by making the packaging inviolable, by the means described in claims 1 and 6, a the advantage of preventing its reclosing at a certain area where it is impossible to re-glue the weld bead.
  • the packaging retaining despite everything, with the exception of this zone, its reclosability properties thanks to the adhesive layer which is released at the weld bead.
  • Another advantage of the present invention is to show a color difference on the package when it has been opened, making it easier to visualization and the distinction between a consumable product and a used product.
  • Another advantage of the invention is to allow easy opening packaging by reducing the opening force exerted on said packaging in the area of the welding seam which is not re-stickable.
  • the packaging of the present invention allows the store staff to easily distinguish if food has been opened, and thus being able to remove them from the shelves before their purchase by customers, which avoids any complaints from customers and therefore any loss of awareness of the store.
  • the object of the invention is to make available to customers a packaging with a high conservation power during packaging, and which, once marketed in supermarkets, ensures that the customer has a quality food product, said customer as well as store staff being able to easily detect if the package has been opened or not by a person before purchase.
  • the present invention also refers to the method of manufacturing a sachet or tray type packaging with a guarantee of inviolability according to claim 1, making it possible to obtain a zone "Z1" where the weld bead peels and a zone "Z2" where the weld bead comes off, said process using a product packaging machine realizing the shapes of the packaging as well as sealing, the process being characterized by the fact that the welding tool is heated to a temperature T 1 , lower at a rupture temperature T r , on a first zone corresponding to zone "Z1" of the weld bead, and heating to a temperature T 2 , greater than a rupture temperature T r , on a second zone corresponding to the zone "Z2" of the weld bead, during the sealing of the seal on the container, the rupture temperature T r corresponding to the point of rupture making it possible to pass from an area where the weld bead peels at u no area where the weld bead comes off the container.
  • the present invention relates to a packaging (1) with device and warranty inviolability for the packaging of food, non-food or solid, liquid, powder, or pasty medical products such as dairy products, cold meats, meats, fish, confectionery, medicines, coffee, food for animals, sauces and hardware. It will find its application in particular in the packaging and packaging industries for food products, non-food or medical which will then be made available to consumers in supermarkets or pharmacies.
  • the invention is applicable to different forms of packaging (1) according to the type of products (19) to be packaged.
  • the packaging (1) can be of the tray type or of bag type.
  • the packaging is of the tray type for the packaging of products such as cheese, meats, fish, hardware, or medicines.
  • tray is composed of a thermoformable structure preformed or formed during packaging process, and a cover using a flexible structure or not, the cover being sealed on the thermoformable structure.
  • the packaging is of the bag type for the packaging of grated gruyère type products, coffee powder, cookies, candy, animal food, or sauces.
  • the first mode consists in forming the sachet directly on the packaging, then fill the product bag, then seal the packaging after have injected a preservative neutral gas.
  • the second method consists in first making the sachet having an opening in industry, then bring said sachet onto the packaging where it is filled with products (19) then sealed at the opening after have injected a preservative neutral gas into it.
  • the bag is made either from a single flexible structure folded on itself then sealed at its ends, either from two flexible structures sealed on each of its ends.
  • the packaging (1) presented in Figures 1, 2, 3 and 4 is made a container (2) composed by a structure "a” and a cover (3) constituted by a structure "b" can be identical to structure "a".
  • the lid (3) then covers the product contained in the container and then is sealed on said container, the sealing of the two elements then forming a bead of solder (4).
  • the packaging is a sachet type packaging used for pack grated gruyère type food or aperitif cookies
  • this packaging then uses either only a structure of type "a”, folded back on itself then sealed on each of its ends once the food product (19) is integrated into this one, that is to say two structures of type "a” sealed together on each end after filling with products (9).
  • the packaging (1) will present a structure "a” and "b” similar to that presented in FIGS. 1 and 2.
  • the container (2) presented in Figure 1 uses a structure "a” consisting of a support layer (5), a adhesive layer (6) with permanent effect and a sealing layer (7).
  • the cover (3) will have a layer-type structure "b” welded, but it may also have a structure similar to that of structure "a".
  • the support layer (5) is positioned outside on the container, and produced in a preferred but non-limiting mode in an amorphous polyester of a thickness can vary depending on the rigidity, resistance, or flexibility of the container that wish to get. It can also be made of materials such as PVC expanded or not, expanded or unexpanded polyprropylene, PET, amorphous, crystalline PETG or expanded, polystyrene expanded or not, polypropylene oriented or not, polyamide oriented or not, PET oriented or not, polyethylene oriented or not, high polyethylene barrier or peelable, polycarbonate polymer liquid crystal (LCP), printed film or neutral, mono or multilayer, rigid film, aluminum film, paper or any other combination of laminate of the above mentioned materials.
  • LCP polycarbonate polymer liquid crystal
  • the permanent effect adhesive layer (6) has an intermediate position located between the support layer (5) and the sealing layer (7) on the container. She is made using adhesive resin or any other synthetic material thermoplastic, and must have an almost permanent adhesive effect to present the bonding properties allowing the lid to be opened and closed several times during consumption of the product in several quantities. Its thickness will preferably be ten to twenty five micrometers to ensure the permanent effect bonding properties, and thus the reclosure of the lid on the container.
  • the welding layer (7), of structure "a” and the welding layer (3) of the structure “b” will preferably have an identical composition. They should have a good attitude to welding and fusion in order to accept variations of sufficiently high temperature and pressure.
  • These weldable layers (3) and (7) will preferably have, in a mode non-limiting execution, five layers (14, 15, 16, 17, 18) and (9, 10, 11, 12, 13) respectively, constituting a thickness of several tens of micrometers, the central layers (16) and (11) being constituted by a film which is a high barrier to oxygen and to gas allowing very good airtightness of the packaging produced.
  • These layers welding may be monolayer in the case of non-food products. Other, in the case of food or medical products, they must have at least three layers, the central layer being a high barrier film to oxygen and gas.
  • the sealing of the lid on the container creates a pocket (8) waterproof and oxygen or gas tight, this pocket being delimited by the welding layer (3) located on the cover, the welding layer (7) located on the container, and the weld bead (4) which is on the entire periphery of the package.
  • the tightness of the pocket is obtained thanks to the position of the high film barrier (11 and 16) to gas and oxygen positioned directly in the welding layer (3 and 7) structure "a” and structure "b". Indeed, during the welding operation, it appears at the adhesive layer of small chimneys in the radial direction of the tray which would allow oxygen to enter the pocket and escape the neutral gas preservative contained therein if the high barrier film was not positioned at this place directly in the welding layer.
  • the sealed pocket (8) correctly stores the neutral gas preservative inside without any penetration of oxygen in contact with the product (19), which ensures the qualities of the packaged food or medical product and therefore preserve and precisely determine the expiration date.
  • the weld bead (4) is formed by the fusion of the layer sealing of the seal with the welding layer of the container during the sealing of the two elements. This consists of two zones "Z1" and "Z2" appearing in Figure 3.
  • the zone "Z1" of the weld bead corresponds to a peeling zone of the cord while the "Z2" zone corresponds to a detachable zone.
  • area is meant peeling, the fact that the weld bead (4) separates into at least two parts 21 and 22 at the time of the first opening as shown in Figure 4, the first part 21 remaining attached to the cover and the second part 22 remaining attached to the container.
  • detachable zone means that the cord (4) of solder separates in its entirety from the container (2) and remains attached completely on the cover (3) at the time of the first opening, revealing the adhesive layer (6) permanent effect on the container.
  • the welding layer of at least one of the package structure has a layer, other than high oxygen barrier film and gas, the material of which provides either a peelable effect or a detachable, depending on the temperature at which the packaging is sealed.
  • This layer will, in the case of a package (1) of the tray type as illustrated in the present description, the layer (13) of the welding layer (7) or the layer (14) of the sealing layer of the cover (3).
  • Any type of material, having these peelability or sealability according to the sealing temperature, may be used, such as for example a blend of polyolefin such as polyethylene (PE), polypropylene (PP), or copolymer ethylene vinyl acetate (EVA) and some or all of the immiscible monomers, or polymers such as polybutylene (PB), ethylene acrylic acid copolymers, polyesters, modified polyesters or ethylene alpha-olefin copolymers.
  • PE polyethylene
  • PP polypropylene
  • EVA ethylene vinyl acetate
  • PB polybutylene
  • PB polybutylene
  • acrylic acid copolymers polyesters
  • polyesters modified polyesters or ethylene alpha-olefin copolymers
  • the material used for this layer (13) or (14) will be a mixture of polyethylene and polybutylene. Peelability bead in this zone "Z1" can also be obtained by coating with a varnish or a lacquer covering this area, this varnish or lacquer which can be deposited on the layer (13) or (14) in the zone corresponding to zone Z1.
  • the weld bead (4) peels and therefore separates into at least two parts 21 and 22 in the "Z1" area, and completely detaches from the container in the "Z2" area.
  • the permanent effect adhesive layer of the container is released only on the "Z2" zone, which therefore allows the packaging to be closed several times, to consume the food or medical product in several quantities, while preventing at the same time the complete reclosure of the cover at the level of the zone "Z1" which is not re-stickable since the adhesive layer is not released on this zone Z1.
  • This peelability zone Z1 also facilitates the opening of packaging. Indeed, in the case of a package that can be closed over the entire weld bead, the user must exert a significant effort to directly break the weld bead. This effort is amplified by the fact that the length "L1", at the level of the tongue (20) opening, to which the opening effort applies is important. Using a peelable weld bead, this opening effort is reduced since the bead peels in first on the length "L1" and is then broken only on the width "L” cord (4).
  • the area "Z1" of the weld bead is preferably small while the zone “Z2" covers the rest of the periphery of the package (1).
  • the "Z1" zone of the weld bead is in a preferred mode at the level of the opening tab (20) which allows easy opening of this one, and which is therefore the first place on the packaging where the seal will be released from the container.
  • the position of the zone "Z1" of the weld bead ensures detect in all cases whether the packaging has been opened or not.
  • the zone "Z1" of the weld bead extends, in a preferred mode and not limiting, about one centimeter on each side of the tongue.
  • the packaging (1) of the present invention is produced on a traditional packaging.
  • the structure "a" for the realization of the container arrives in the form of roll of plastic film, then unrolled and possibly thermoformed, then forming the container (2) of the packaging which is of the tray or tray type, or even a sachet.
  • This is then filled with the product (19) to be conditioned, after which it is covered by a cover (3) using a structure "b" also in the form of a roll.
  • the sealing of the seal on the packaging is made after injecting a neutral gas to preserve inside said package.
  • the sealing of the lid on the container then realizing the weld bead.
  • This sealing of the lid on the container is carried out by means of a welding tool more regularly called sealing bar.
  • the characteristics of the cord welds obtained depend on the welding time, the pressure of the welds, and the solder temperature. These characteristics being different according to the three parameters above choose.
  • the weld bead will have different properties depending on the temperature solder chosen.
  • the zones “Z1" and “Z2" of the weld bead are obtained by heating the two welding layers during the fusion, and this for a constant pressure and duration, the zone “Z1" of the weld bead at a temperature T 1 and zone “Z2" of the weld bead at a temperature T 2 .
  • the temperature T 1 making it possible to obtain the peeling properties of the weld bead and the temperature T 2 making it possible to obtain the detachable properties of the container thus releasing the adhesive layer.
  • the weld bead has peeling properties when the welding temperature is lower than a breaking temperature T r , and has properties of detachability of the container when the temperature of weld is greater than a rupture temperature T r .
  • the rupture temperature T r corresponding to the rupture point between the peelability zone and the area of detachment of the bead.
  • FIG. 6 shows for the preferred example illustrated in the present description, the resistance curves C 1 , C 2 , C 3 of the weld bead as a function of the temperature.
  • curve C 1 presents the adhesion curve of the detachable weld bead allowing reclosability
  • curve C 2 presents the rupture curve of the weld bead appearing in the zone 23 in FIG. 4
  • curve C 3 presents the peelability curve of the weld bead.
  • the curve C 2 is located under the curves C 1 and C 3 , which means that the peelability of the weld bead is less resistant than the rupture of the bead , and suddenly it will peel in several parts (21 and 22) when opening the packaging.
  • the weld bead of the packaging therefore comprising two zones “Z1" and “Z2" is produced, by heating the welding tool to a temperature T 1 lower than the rupture temperature T r on the tool zone corresponding to zone "Z1", and at the same time heating the welding tool to a welding temperature T 2 higher than the breaking temperature T r on the tool zone corresponding to the zone "Z2".
  • a welding tool could be used for this, having a temperature variation equal to the temperature difference between T 2 and T 1 , and making it possible to go from a temperature T 2 higher than the rupture temperature T r , to a temperature T 1 lower than the rupture temperature T r .
  • This temperature variation is obtained on the soldering tool using a plate or an adhesive tape having a thermal resistance which reduces the temperature from T 2 to T 1 and which makes it possible to obtain the desired temperature variation.
  • the plate or the adhesive tape will make it possible to obtain a variation of 10 to 20 ° C to ensure the temperature variation from T 2 to T 1 by passing the threshold of the rupture temperature T r .
  • This plate is positioned below the welding tool, under the zone corresponding to the zone "Z1" of the weld bead.
  • one or more teflon adhesive tapes which allow to obtain a decrease in temperature of about 15 ° C.
  • the sealing bar is heated to a temperature T 2 adjustment of 150 to 160 ° C located above the rupture temperature, which allows to obtain after passage through the teflon tape a temperature T 1 of the order of 130 to 135 ° C located below the rupture temperature. This is done at a welding pressure of 3 bars and for a duration of 1.8 to 3 seconds.
  • Another way to reduce the temperature on the welding tool in the zone corresponding to zone "Z1" consists in making cooling channels by air or by water in said welding tool zone. So we decrease the conductivity the material of the bar in the area concerned, which decreases the temperature relative to the non-perforated area corresponding to the "Z2" area.
  • a weld bead (4) is produced comprising two zones “Z1" and “Z2", the first allowing a peeling cord and the second a cord which detaches from the container, thereby releasing the adhesive layer (6) on this area.
  • This cord of welding obtained by creating a temperature difference on the welding tool by means of a plate having good thermal resistance properties, which keeps the cost of packaging almost identical to the packaging manufacturing process earlier.

Abstract

A package is a hermetically sealed pocket formed from two structures. The first structure has a support layer, an adhesive layer and a sealable internal layer. The second structure has a sealable layer or is similar to the first structure. An opening in the package is formed by two zones between the two sealable layers. The first zone is a breakable coating and the second zone is resealable. An Independent claim is included for manufacturing a package as above.

Description

La présente invention est relative à un emballage avec garantie d'inviolabilité pour le conditionnement de produits alimentaires, non alimentaires, et médicaux de type solide, liquide, poudre ou pâteux tels que les produits laitiers, la charcuterie, les viandes, la quincaillerie, le café, les biscuits. L'invention est également relative au procédé de fabrication de l'emballage avec garantie d'inviolabilité.The present invention relates to packaging with warranty inviolability for the packaging of food and non-food products, and solid, liquid, powder or pasty medical products such as dairy products, cold meats, meats, hardware, coffee, cookies. The invention is also relating to the packaging manufacturing process with guarantee of inviolability.

Elle trouvera son application dans les industries de fabrication d'emballage et de conditionnement des produits alimentaires, non alimentaires ou médicaux qui seront ensuite mis à la disposition des consommateurs.It will find its application in the manufacturing industries wrapping and packaging of food, non-food or which will then be made available to consumers.

Les emballages pour le conditionnement de produits alimentaires, non alimentaires ou médicaux se trouvant actuellement sur le marché sont constitués essentiellement d'un conteneur et d'un opercule, ces deux éléments étant assemblés par scellage, une fois le produit alimentaire ou médical conditionné, et après avoir injecté un gaz neutre pour permettre la conservation dudit produit pendant plusieurs mois.Packaging for the packaging of food products, not food or medical products currently on the market are made up essentially a container and a cover, these two elements being assembled by sealing, once the food or medical product has been packaged, and after injecting a neutral gas to allow the conservation of said product for several months.

Les différentes opérations pour constituer l'emballage consistent à réaliser le conteneur initialement sous rouleaux de films, à remplir ce conteneur de produit alimentaire ou médical, à couvrir l'ensemble par un opercule, puis à sceller l'opercule sur le conteneur.The different operations to constitute the packaging consist of make the container initially under rolls of film, to fill this container with product food or medical, cover the assembly with a seal, then seal the seal on the container.

Le scellage de l'opercule sur le conteneur fait apparaítre un cordon de soudure constituant l'élément de liaison du conteneur et de l'opercule.The sealing of the lid on the container reveals a bead of weld constituting the connecting element of the container and the lid.

Dans le cas où l'emballage est un sachet, celui-ci peut être réalisé soit directement lors du conditionnement du produit, soit préfabriqué auparavant en industrie puis amené sur la machine de conditionnement où il est rempli de produit puis scellé ensuite.If the packaging is a sachet, this can be done either directly during product packaging, or previously prefabricated in industry then brought to the packaging machine where it is filled with product and then sealed then.

Deux types principaux d'assemblage existent actuellement sur le marché. Le premier type d'emballage a pour principale fonction de conditionner le produit et de permettre sa conservation durant plusieurs mois. Une fois que le consommateur ouvre l'emballage pour en extraire le produit alimentaire, il doit alors consommer complètement la quantité de produits conditionnés ou alors utiliser des films conservateurs pour stocker au réfrigérateur le reste du produitTwo main types of assembly currently exist on the market. The first type of packaging has the main function of packaging the product. and allow its conservation for several months. Once the consumer opens the packaging to extract the food product, it must then consume completely the quantity of products packaged or else use preservative films to store the rest of the product in the refrigerator

Le second type d'emballage reprend la même fonction permettant de conserver plusieurs mois le produit mais, de plus, il permet d'utiliser plusieurs fois l'emballage après la première ouverture. The second type of packaging has the same function allowing keep the product for several months but, moreover, it allows you to use it several times the packaging after the first opening.

En effet, lors de la première ouverture de l'emballage, le cordon de soudure se détache complètement de l'emballage sur une de ses surfaces libérant, alors une couche adhésive qui permet alors de refermer plusieurs fois ledit emballage dans le cas où l'utilisateur souhaiterait consommer le produit conditionné en plusieurs fois.When the packaging is opened for the first time, the cord solder detaches completely from the packaging on one of its releasing surfaces, then a adhesive layer which then makes it possible to close said packaging several times in the event that the user would like to consume the packaged product in several installments.

La demande de brevet WO 97/19867 décrit un emballage de ce second type, qui correspond au préambule de la revendication 1.Patent application WO 97/19867 describes a packaging of this second type, which corresponds to preamble of claim 1.

Avec ce concept d'emballage, dont le marché est fortement développé aujourd'hui, est apparu la nécessité de rendre inviolable l'emballage. On entend par «violabilité » de l'emballage le fait qu'un utilisateur peut ouvrir l'emballage pour extraire une quantité du produit puis le refermer sans que personne ne s'en aperçoive.With this packaging concept, whose market is highly developed today, the need has arisen to make packaging tamper-proof. We hear by "Violability" of the packaging the fact that a user can open the packaging to extract a quantity of the product and then close it without anyone noticing.

Pour cela, il est très fréquent dans les grandes surfaces commerciales que les responsables de rayons trouvent des emballages dont une certaine quantité de produits a été consommée avant l'achat du produit par un client.For this, it is very common in large commercial areas that department managers find packaging with a certain amount of products was consumed before the purchase of the product by a customer.

Dans le cas contraire où le responsable de rayon ou le personnel de magasin n'arrive pas à distinguer qu'une quantité de produits a été consommée dans un emballage, le client, non attentif, peut acheter et partir alors avec ce produit déjà entamé.Otherwise the department manager or the personnel of store cannot distinguish that a quantity of products has been consumed in a packaging, the customer, not attentive, can buy and then leave with this product already started.

C'est pourquoi les magasins, et en particulier les services après-vente, reçoivent très fréquemment des produits en retour de la part des clients, ce qui naturellement augmentent le nombre de rebut et ainsi induit une réduction du bénéfice.This is why stores, and in particular after-sales services, very frequently receive products in return from customers, which naturally increase the number of rejects and thus induce a reduction in profit.

Il en résulte que les consommateurs peuvent également ressentir un certain mécontentement quant à la qualité du produit et du service, si bien que le magasin risque de voir sa clientèle diminuer.As a result, consumers may also experience some dissatisfaction with the quality of the product and service, so that the store risk seeing its clientele decrease.

Un inconvénient plus dangereux pour le consommateur est que celui-ci peut consommer des produits alimentaires ou médicaux périssables pouvant entraíner une intoxication alimentaire. En effet, l'emballage usagé ne dispose plus de gaz conservateur empêchant le produit de se dégrader.A more dangerous disadvantage for the consumer is that the consumer may consume perishable food or medical products which may cause food poisoning. Indeed, used packaging no longer has preservative gas preventing the product from degrading.

La présente invention vise à remédier à tous ces inconvénients et l'un des buts principaux est de réaliser un emballage muni d'un dispositif d'inviolabilité permettant de bien visualiser que l'emballage a été ouvert, et ainsi éviter que des clients trouvent des produits usagés dans les rayons ou achètent des produits consommés, voire même périmés sans que l'on puisse s'en rendre compte.The present invention aims to remedy all these drawbacks and one main goals is to make a packaging with a tamper-evident device to clearly visualize that the packaging has been opened, and thus avoid customers find used products on the shelves or buy consumed products, or even even out of date without anyone noticing.

Pour cela, la présente invention, en rendant l'emballage inviolable, par les moyens décrits dans les revendications 1 et 6, a pour avantage d'empêcher sa refermeture au niveau d'une certaine zone sur laquelle il est impossible de recoller le cordon de soudure. L'emballage conservant malgré tout, à l'exception de cette zone, ses propriétés de refermabilité grâce à la couche adhésive qui est libérée au niveau du cordon de soudure.For this, the present invention, by making the packaging inviolable, by the means described in claims 1 and 6, a the advantage of preventing its reclosing at a certain area where it is impossible to re-glue the weld bead. The packaging retaining despite everything, with the exception of this zone, its reclosability properties thanks to the adhesive layer which is released at the weld bead.

Un autre avantage de la présente invention est de faire apparaítre une différence de couleur sur l'emballage lorsque celui-ci a été ouvert, facilitant ainsi la visualisation et la distinction entre un produit consommable et un produit usagé.Another advantage of the present invention is to show a color difference on the package when it has been opened, making it easier to visualization and the distinction between a consumable product and a used product.

Un autre avantage de l'invention est de permettre une ouverture facile de l'emballage en réduisant l'effort d'ouverture exercé sur ce dit emballage dans la zone du cordon de soudure qui n'est pas recollable.Another advantage of the invention is to allow easy opening packaging by reducing the opening force exerted on said packaging in the area of the welding seam which is not re-stickable.

De cette façon, l'emballage de la présente invention permet au personnel de magasins de distinguer aisément si les produits alimentaires ont été ouvert, et ainsi pouvoir les retirer des rayons avant leur achat par les clients, ce qui évite toute plainte de la part des clients et donc toute perte de notoriété du magasin.In this way, the packaging of the present invention allows the store staff to easily distinguish if food has been opened, and thus being able to remove them from the shelves before their purchase by customers, which avoids any complaints from customers and therefore any loss of awareness of the store.

Cela élimine également tout risque d'intoxication alimentaire pour le consommateur qui pourrait acheter des produits périmés sans s'en rendre compte.It also eliminates any risk of food poisoning for the consumer who could buy expired products without realizing it.

Ainsi, le but de l'invention est de mettre à la disposition des clients un emballage disposant d'un grand pouvoir de conservation au cours du conditionnement, et qui, une fois commercialisé dans les grandes surfaces, assure que le client dispose d'un produit alimentaire de qualité, ledit client ainsi que le personnel du magasin étant alors capables de détecter très facilement si l'emballage a été ouvert ou non par une personne avant son achat.Thus, the object of the invention is to make available to customers a packaging with a high conservation power during packaging, and which, once marketed in supermarkets, ensures that the customer has a quality food product, said customer as well as store staff being able to easily detect if the package has been opened or not by a person before purchase.

D'autres buts et avantages de la présente invention apparaítront au cours de la description suivante qui n'est cependant donnée qu'à titre indicatif et qui n'a pas pour but de la limiter.Other objects and advantages of the present invention will become apparent from course of the following description which is however given only as an indication and which has not to limit it.

La présente invention est relative à un Emballage avec garantie d'inviolabilité de type barquette ou sachet pour le conditionnement des produits alimentaires, non alimentaires ou médicaux de type solide, liquide, poudre ou pâteux tels que les produits laitiers, la charcuterie, les viandes, la quincaillerie, le café, les biscuits, permettant une ouverture facile et la refermeture dudit emballage comprenant :

  • une structure "a" constitué d'au moins trois couches, à savoir :
    • une couche support positionnée à l'extérieur sur l'emballage,
    • une couche adhésive intermédiaire à effet permanent,
    • une couche soudante positionnée à l'intérieur sur l'emballage,
  • et éventuellement une structure "b" comprenant au moins une couche soudante ou une structure semblable à la structure"a".
  • une poche complètement hermétique, avant la première ouverture de l'emballage, délimitée par la couche soudante ou les couches soudantes de l'emballage et le cordon de soudure scellant l'emballage,
   caractérisé par le fait que le cordon de soudure comprend deux zones "Z1" et "Z2", la zone "Z1" étant une zone de pelage et la zone "Z2" étant une zone détachable, de façon à ce que lors de la première ouverture de l'emballage, le cordon de soudure pèle sur la première zone "Z1", et se détache sur la seconde zone "Z2" libérant alors la couche adhésive uniquement au niveau de la zone "Z2" sur laquelle l'emballage peut être refermé, afin de garantir l'inviolabilité de l'emballage et ainsi assurer que le consommateur puisse détecter que ledit emballage a été ouvert ou non avant l'achat du produit conditionné à l'intérieur de celui-ci, et pour permettre une ouverture facile.The present invention relates to a packaging with a tamper-proof seal of the tray or bag type for the packaging of food, non-food or medical products of the solid, liquid, powder or pasty type such as dairy products, cold meats, meats, hardware, coffee, cookies, allowing easy opening and resealing of said packaging comprising:
  • a structure "a" consisting of at least three layers, namely:
    • a support layer positioned outside on the packaging,
    • an intermediate adhesive layer with a permanent effect,
    • a sealing layer positioned inside on the packaging,
  • and possibly a structure "b" comprising at least one weldable layer or a structure similar to the structure "a".
  • a completely airtight pocket, before the first opening of the packaging, delimited by the welding layer or the welding layers of the packaging and the weld bead sealing the packaging,
characterized by the fact that the weld bead comprises two zones "Z1" and "Z2", the zone "Z1" being a peeling zone and the zone "Z2" being a detachable zone, so that during the first opening of the packaging, the weld bead peels on the first zone "Z1", and comes off on the second zone "Z2" then releasing the adhesive layer only at the level of the zone "Z2" on which the packaging can be closed, in order to guarantee the inviolability of the packaging and thus ensure that the consumer can detect that the said packaging has been opened or not before the purchase of the product packaged therein, and to allow easy opening .

La présente invention fait également référence au Procédé de fabrication de l'emballage de type sachet ou barquette avec garantie d'inviolabilité selon la revendication 1 permettant d'obtenir une zone "Z1" où le cordon de soudure pèle et une zone "Z2" où le cordon de soudure se détache, ledit procédé utilisant une machine de conditionnement du produit réalisant les formes de l'emballage ainsi que le scellage, le procédé étant caractérisé par le fait qu'on chauffe l'outil de soudure une température T1, inférieure à une température de rupture Tr, sur une première zone correspondant à la zone "Z1" du cordon de soudure, et on chauffe à une température T2, supérieure à une température de rupture Tr, sur une seconde zone correspondant à la zone "Z2" du cordon de soudure, au cours du scellage de l'opercule sur le conteneur, la température de rupture Tr correspondant au point de rupture permettant de passer d'une zone où le cordon de soudure pèle à une zone où le cordon de soudure se détache du conteneur.The present invention also refers to the method of manufacturing a sachet or tray type packaging with a guarantee of inviolability according to claim 1, making it possible to obtain a zone "Z1" where the weld bead peels and a zone "Z2" where the weld bead comes off, said process using a product packaging machine realizing the shapes of the packaging as well as sealing, the process being characterized by the fact that the welding tool is heated to a temperature T 1 , lower at a rupture temperature T r , on a first zone corresponding to zone "Z1" of the weld bead, and heating to a temperature T 2 , greater than a rupture temperature T r , on a second zone corresponding to the zone "Z2" of the weld bead, during the sealing of the seal on the container, the rupture temperature T r corresponding to the point of rupture making it possible to pass from an area where the weld bead peels at u no area where the weld bead comes off the container.

L'invention sera mieux comprise à la lecture de la description suivante, accompagnée des dessins en annexe, parmi lesquels :

  • la figure 1 présente une coupe transversale d'un exemple d'emballage pour le conditionnement des produits alimentaires, non alimentaires ou médicaux,
  • la figure 2 présente un mode préférentiel de la constitution des différents composants de l'emballage,
  • la figure 3 schématise un exemple d'emballage en vue de dessus et présente tant la zone "Z1" et "Z2" du cordon de soudure,
  • la figure 4 présente un exemple d'emballage après sa première ouverture,
  • la figure 5 présente un graphe de fonctionnement de la présente invention,
  • la figure 6 schématise les courbes de résistance pour du cordon de soudure selon différentes caractéristiques.
The invention will be better understood on reading the following description, accompanied by the accompanying drawings, among which:
  • FIG. 1 shows a cross section of an example of packaging for the packaging of food, non-food or medical products,
  • FIG. 2 shows a preferred method of constituting the various components of the packaging,
  • FIG. 3 shows schematically an example of packaging viewed from above and presents both the "Z1" and "Z2" zones of the weld bead,
  • FIG. 4 shows an example of packaging after its first opening,
  • FIG. 5 presents an operating graph of the present invention,
  • Figure 6 shows schematically the resistance curves for the weld bead according to different characteristics.

La présente invention vise un emballage (1) avec dispositif et garantie d'inviolabilité pour le conditionnement de produits (19) alimentaires, non alimentaires ou médicaux de type solide, liquide, poudre, ou pâteux tels que les produits laitiers, la charcuterie, les viandes, le poisson, les confiseries, les médicaments, le café, la nourriture pour animaux, les sauces et la quincaillerie. Elle trouvera notamment son application dans les industries de fabrication d'emballages et de conditionnements de produits alimentaires, non alimentaires ou médicaux qui seront ensuite mis à la disposition des consommateurs dans les grandes surfaces commerciales ou les pharmacies.The present invention relates to a packaging (1) with device and warranty inviolability for the packaging of food, non-food or solid, liquid, powder, or pasty medical products such as dairy products, cold meats, meats, fish, confectionery, medicines, coffee, food for animals, sauces and hardware. It will find its application in particular in the packaging and packaging industries for food products, non-food or medical which will then be made available to consumers in supermarkets or pharmacies.

L'invention est applicable à différentes formes de l'emballage (1) selon le type de produits (19) à conditionner. L'emballage (1) peut être de type barquette ou de type sachet. L'emballage est de type barquette pour le conditionnement de produits tels que le fromage, les viandes, le poisson, la quincaillerie, ou les médicaments. Dans ce cas, la barquette est composée d'une structure thermoformable préformée ou formée durant le processus d'emballage, et d'un opercule utilisant une structure souple ou non, l'opercule étant scellé sur la structure thermoformable.The invention is applicable to different forms of packaging (1) according to the type of products (19) to be packaged. The packaging (1) can be of the tray type or of bag type. The packaging is of the tray type for the packaging of products such as cheese, meats, fish, hardware, or medicines. In this case tray is composed of a thermoformable structure preformed or formed during packaging process, and a cover using a flexible structure or not, the cover being sealed on the thermoformable structure.

L'emballage est au contraire de type sachet pour le conditionnement de produits de type gruyère râpé, poudre de café, biscuits, bonbons, nourriture pour animaux, ou sauces.On the contrary, the packaging is of the bag type for the packaging of grated gruyère type products, coffee powder, cookies, candy, animal food, or sauces.

Deux modes de conditionnement existent avec les emballages de type sachet. Le premier mode consiste à former le sachet directement sur la machine de conditionnement, à remplir ensuite le sachet de produit, puis à sceller l'emballage après y avoir injecté un gaz neutre conservateur.Two types of packaging exist with type packaging bag. The first mode consists in forming the sachet directly on the packaging, then fill the product bag, then seal the packaging after have injected a preservative neutral gas.

Le second mode consiste à réaliser dans un premier temps le sachet disposant d'une ouverture en industrie, puis amener ledit sachet sur la machine de conditionnement où il est rempli des produits (19) puis scellé au niveau de l'ouverture après y avoir injecté un gaz neutre conservateur. The second method consists in first making the sachet having an opening in industry, then bring said sachet onto the packaging where it is filled with products (19) then sealed at the opening after have injected a preservative neutral gas into it.

Le sachet est réalisé soit à partir d'une seule structure souple pliée sur elle-même puis scellée à ses extrémités, soit à partir de deux structures souples scellées sur chacune de ses extrémités.The bag is made either from a single flexible structure folded on itself then sealed at its ends, either from two flexible structures sealed on each of its ends.

La suite de la description s'appuiera sur un exemple de type barquette qui est illustré sur les figures 1, 2, 3 et 4, mais celle-ci reste valable pour un emballage de type sachet.The rest of the description will be based on an example of a tray type. which is illustrated in Figures 1, 2, 3 and 4, but this remains valid for a packaging of bag type.

Pour cela, l'emballage (1) présenté aux figures 1, 2, 3 et 4 est constitué d'un conteneur (2) composé par une structure "a" et d'un opercule (3) constitué par une structure "b" pouvant être identique à la structure "a".For this, the packaging (1) presented in Figures 1, 2, 3 and 4 is made a container (2) composed by a structure "a" and a cover (3) constituted by a structure "b" can be identical to structure "a".

L'opercule (3) couvre ensuite le produit contenu dans le conteneur puis est scellé sur ledit conteneur, le scellage des deux éléments formant alors un cordon de soudure (4).The lid (3) then covers the product contained in the container and then is sealed on said container, the sealing of the two elements then forming a bead of solder (4).

Dans le cas où l'emballage est un emballage de type sachet utilisé pour conditionner des produits alimentaires de type gruyère rapé ou biscuits apéritif, cet emballage utilise alors soit uniquement une structure de type "a", repliée sur elle-même puis scellée sur chacune de ses extrémités une fois le produit (19) alimentaire intégré dans celui-ci, soit deux structures de type "a" scellées ensemble sur chaque extrémité après remplissage en produits (9).In the case where the packaging is a sachet type packaging used for pack grated gruyère type food or aperitif cookies, this packaging then uses either only a structure of type "a", folded back on itself then sealed on each of its ends once the food product (19) is integrated into this one, that is to say two structures of type "a" sealed together on each end after filling with products (9).

Dans un mode préférentiel de réalisation, l'emballage (1) présentera une structure "a" et "b" semblable à ce présenté aux figures 1 et 2. Le conteneur (2) présenté à la figure 1 utilise une structure "a" se composant d'une couche support (5), d'une couche adhésive (6) à effet permanent et d'une couche soudante (7).In a preferred embodiment, the packaging (1) will present a structure "a" and "b" similar to that presented in FIGS. 1 and 2. The container (2) presented in Figure 1 uses a structure "a" consisting of a support layer (5), a adhesive layer (6) with permanent effect and a sealing layer (7).

L'opercule (3) aura quant à lui une structure "b" de type couche soudante, mais il pourra également avoir une structure semblable à celle de la structure "a".The cover (3) will have a layer-type structure "b" welded, but it may also have a structure similar to that of structure "a".

La couche support (5) est positionnée à l'extérieur sur le conteneur, et réalisée dans un mode préféré mais non limitatif dans un polyester amorphe d'une épaisseur pouvant varier suivant la rigidité, la résistance, ou la souplesse du conteneur que l'on souhaite obtenir. Elle pourra également être réalisée dans des matières telles que PVC expansé ou non, le polyprropylène expansé ou non, PET, PETG amorphe, crystallin ou expansé, le polystyrène expansé ou non, le polypropylène orienté ou non, le polyamide orienté ou non, PET orienté ou non, le polyéthylène orienté ou non, le polyéthylène haute barrière ou pelable, le polycarbonate le cristal liquide polymère (LCP), film imprimé ou neutre, mono ou multicouche, film rigide, film aluminium, papier ou tout autre combinaison de laminé des matériaux mentionnés ci-dessus.The support layer (5) is positioned outside on the container, and produced in a preferred but non-limiting mode in an amorphous polyester of a thickness can vary depending on the rigidity, resistance, or flexibility of the container that wish to get. It can also be made of materials such as PVC expanded or not, expanded or unexpanded polyprropylene, PET, amorphous, crystalline PETG or expanded, polystyrene expanded or not, polypropylene oriented or not, polyamide oriented or not, PET oriented or not, polyethylene oriented or not, high polyethylene barrier or peelable, polycarbonate polymer liquid crystal (LCP), printed film or neutral, mono or multilayer, rigid film, aluminum film, paper or any other combination of laminate of the above mentioned materials.

La couche adhésive (6) a effet permanent a une position intermédiaire située entre la couche support (5) et la couche soudante (7) sur le conteneur. Elle est réalisée au moyen de résine adhésive ou de tout autre matière de type synthétique thermoplastique, et devra avoir un effet adhésif quasi permanent pour présenter les propriétés de collage permettant d'ouvrir et de refermer plusieurs fois le couvercle lors de la consommation du produit en plusieurs quantités. Son épaisseur sera de préférence de dix à vingt cinq micromètres pour assurer les propriétés de collage à effet permanent, et ainsi la refermeture de l'opercule sur le conteneur.The permanent effect adhesive layer (6) has an intermediate position located between the support layer (5) and the sealing layer (7) on the container. She is made using adhesive resin or any other synthetic material thermoplastic, and must have an almost permanent adhesive effect to present the bonding properties allowing the lid to be opened and closed several times during consumption of the product in several quantities. Its thickness will preferably be ten to twenty five micrometers to ensure the permanent effect bonding properties, and thus the reclosure of the lid on the container.

La couche soudante (7), de la structure "a" et la couche soudante (3) de la structure "b" auront de préférence une composition identique. Elles devront avoir une bonne attitude au soudage et à la fusion de façon à accepter pour cela des variations de température et de pression suffisamment importantes.The welding layer (7), of structure "a" and the welding layer (3) of the structure "b" will preferably have an identical composition. They should have a good attitude to welding and fusion in order to accept variations of sufficiently high temperature and pressure.

Ces couches soudantes (3) et (7) auront de préférence, dans un mode d'exécution non limitatif, cinq couches (14, 15, 16, 17, 18) et (9, 10, 11, 12, 13) respectivement, constituant une épaisseur de plusieurs dizaines de micromètres, les couches centrales (16) et (11) étant constituées par un film haute barrière à l'oxygène et au gaz permettant d'obtenir une très bonne herméticité de l'emballage réalisé. Ces couches soudantes pourront être monocouche dans le cas de produits non alimentaires. Autrement, dans le cas de produits alimentaires ou médicaux, elles devront avoir au minimum trois couches, la couche centrale étant un film haute barrière à l'oxygène et au gaz.These weldable layers (3) and (7) will preferably have, in a mode non-limiting execution, five layers (14, 15, 16, 17, 18) and (9, 10, 11, 12, 13) respectively, constituting a thickness of several tens of micrometers, the central layers (16) and (11) being constituted by a film which is a high barrier to oxygen and to gas allowing very good airtightness of the packaging produced. These layers welding may be monolayer in the case of non-food products. Other, in the case of food or medical products, they must have at least three layers, the central layer being a high barrier film to oxygen and gas.

En effet, le scellage de l'opercule sur le conteneur réalise une poche (8) imperméable à l'eau et étanche à l'oxygène ou au gaz, cette poche étant délimitée par la couche soudante (3) située sur l'opercule, la couche soudante (7) située sur le conteneur, et le cordon (4) de soudure qui se trouve sur toute la périphérie de l'emballage.Indeed, the sealing of the lid on the container creates a pocket (8) waterproof and oxygen or gas tight, this pocket being delimited by the welding layer (3) located on the cover, the welding layer (7) located on the container, and the weld bead (4) which is on the entire periphery of the package.

L'herméticité de la poche est obtenue grâce à la position du film haute barrière (11 et 16) au gaz et à l'oxygène positionné directement dans la couche soudante (3 et 7) de la structure "a" et de la structure "b". En effet, lors de l'opération de soudage, il apparaít au niveau de la couche adhésive des petites cheminées dans le sens radial de la barquette qui laisseraient pénétrer l'oxygène dans la poche et échapper le gaz neutre conservateur contenu dans celui-ci si le film haute barrière n'était pas positionné à cet endroit directement dans la couche soudante. The tightness of the pocket is obtained thanks to the position of the high film barrier (11 and 16) to gas and oxygen positioned directly in the welding layer (3 and 7) structure "a" and structure "b". Indeed, during the welding operation, it appears at the adhesive layer of small chimneys in the radial direction of the tray which would allow oxygen to enter the pocket and escape the neutral gas preservative contained therein if the high barrier film was not positioned at this place directly in the welding layer.

Ainsi, la poche (8) hermétique conserve correctement le gaz neutre conservateur à l'intérieur sans aucune pénétration d'oxygène au contact du produit (19), ce qui permet d'assurer les qualités du produit alimentaire ou médical conditionné et donc préserver et déterminer précisément la date limite de consommation.Thus, the sealed pocket (8) correctly stores the neutral gas preservative inside without any penetration of oxygen in contact with the product (19), which ensures the qualities of the packaged food or medical product and therefore preserve and precisely determine the expiration date.

Cette poche (8) hermétique constituée par une couche soudante disposant d'un film haute barrière et le cordon de soudure est libérée au cours de la première ouverture de l'emballage par le consommateur.This airtight pocket (8) constituted by a sealing layer having a high barrier film and the weld bead is released during the first opening of the packaging by the consumer.

Le cordon (4) de soudure est constitué par la fusion de la couche soudante de l'opercule avec la couche soudante du conteneur au cours du scellage des deux éléments. Celui-ci se compose de deux zones "Z1" et "Z2" apparaissant à la figure 3.The weld bead (4) is formed by the fusion of the layer sealing of the seal with the welding layer of the container during the sealing of the two elements. This consists of two zones "Z1" and "Z2" appearing in Figure 3.

La zone "Z1" du cordon de soudure correspond à une zone de pelage du cordon tandis que la zone "Z2" correspond à une zone détachable. On entend par zone de pelage, le fait que le cordon (4) de soudure se sépare en au moins deux parties 21 et 22 au moment de la première ouverture comme le montre la figure 4, la première partie 21 restant attachée sur l'opercule et la seconde partie 22 restant attachée sur lé conteneur.The zone "Z1" of the weld bead corresponds to a peeling zone of the cord while the "Z2" zone corresponds to a detachable zone. By area is meant peeling, the fact that the weld bead (4) separates into at least two parts 21 and 22 at the time of the first opening as shown in Figure 4, the first part 21 remaining attached to the cover and the second part 22 remaining attached to the container.

Au contraire, on entend par zone détachable le fait que le cordon (4) de soudure se sépare dans son intégralité du conteneur (2) et reste attaché complètement sur l'opercule (3) au moment de la première ouverture, laissant apparaítre la couche adhésive (6) à effet permanent sur le conteneur.On the contrary, the term detachable zone means that the cord (4) of solder separates in its entirety from the container (2) and remains attached completely on the cover (3) at the time of the first opening, revealing the adhesive layer (6) permanent effect on the container.

Pour obtenir ce résultat, la couche soudante d'au moins une des structure de l'emballage dispose d'une couche, autre que le film haute barrière à l'oxygène et au gaz, dont la matière utilisée procure soit un effet de pelabilité, soit un effet de détachabilité, selon la température à laquelle le scellage de l'emballage est effectué.To achieve this result, the welding layer of at least one of the package structure has a layer, other than high oxygen barrier film and gas, the material of which provides either a peelable effect or a detachable, depending on the temperature at which the packaging is sealed.

Cette couche sera, dans le cas d'un emballage (1) de type barquette comme illustré dans la présente description, la couche (13) de la couche soudante (7) ou la couche (14) de la couche soudante de l'opercule (3).This layer will, in the case of a package (1) of the tray type as illustrated in the present description, the layer (13) of the welding layer (7) or the layer (14) of the sealing layer of the cover (3).

Tout type de matière, présentant ces propriétés de pelabilité ou de scellabilité selon la température de scellage, pourra être utilisé, comme par exemple un mélange de polyoléfine comme le polyéthylène (PE), le polypropylène (PP), ou copolymère éthylène vinyle acétate (EVA) et en partie ou totalité des monomères immiscibles ou polymères comme le polybutylène (PB), les copolymères éthylène acrylique acide, les polyesters, les polyesters modifiés ou les copolymères ethylène alpha-oléfine. Any type of material, having these peelability or sealability according to the sealing temperature, may be used, such as for example a blend of polyolefin such as polyethylene (PE), polypropylene (PP), or copolymer ethylene vinyl acetate (EVA) and some or all of the immiscible monomers, or polymers such as polybutylene (PB), ethylene acrylic acid copolymers, polyesters, modified polyesters or ethylene alpha-olefin copolymers.

Dans un mode préférentiel et non limitatif, la matière utilisée pour cette couche (13) ou (14) sera un mélange de polyéthylène et de polybutylène. La pelabilité du cordon dans cette zone "Z1" peut être aussi obtenue par l'enduction d'un vernis ou d'une laque couvrant cette zone, ce vernis ou laque pouvant être déposé sur la couche (13) ou (14) dans la zone correspondant à la zone Z1.In a preferred and nonlimiting mode, the material used for this layer (13) or (14) will be a mixture of polyethylene and polybutylene. Peelability bead in this zone "Z1" can also be obtained by coating with a varnish or a lacquer covering this area, this varnish or lacquer which can be deposited on the layer (13) or (14) in the zone corresponding to zone Z1.

Ainsi, lors de la première ouverture, comme on peut le constater sur la figure, le cordon (4) de soudure pèle et se sépare donc en au moins deux parties 21 et 22 sur la zone "Z1", et se détache complètement du conteneur sur la zone "Z2". De cette façon, la couche adhésive à effet permanent du conteneur est libérée uniquement sur la zone "Z2", ce qui permet par conséquent de refermer l'emballage plusieurs fois, pour consommer le produit alimentaire ou médical en plusieurs quantités, tout en empêchant en même temps la refermeture complète de l'opercule au niveau de la zone "Z1" qui n'est pas recollable puisque la couche adhésive n'est pas libérée sur cette zone Z1.Thus, during the first opening, as can be seen on the figure, the weld bead (4) peels and therefore separates into at least two parts 21 and 22 in the "Z1" area, and completely detaches from the container in the "Z2" area. Of this way, the permanent effect adhesive layer of the container is released only on the "Z2" zone, which therefore allows the packaging to be closed several times, to consume the food or medical product in several quantities, while preventing at the same time the complete reclosure of the cover at the level of the zone "Z1" which is not re-stickable since the adhesive layer is not released on this zone Z1.

Cela permet donc au personnel de magasins ou même au consommateur lui-même de détecter si un emballage a été ouvert ou non par un individu avant l'achat du produit alimentaire ou médical. En détectant facilement les emballages consommés, cela permet également d'éviter que le consommateur parte et se nourrisse par mégarde d'aliments périmés qui pourraient entraíner des intoxications alimentaires.This allows store staff or even the the consumer himself to detect whether or not a package has been opened by an individual before purchasing the food or medical product. By easily detecting packaging consumed, this also prevents the consumer from leaving and feeding by inadvertent expired foods that could cause food poisoning.

Cette zone de pelabilité Z1 facilite également l'ouverture de l'emballage. En effet, dans le cas d'un emballage refermable sur tout le cordon de soudure, l'utilisateur doit exercer un effort important pour casser directement le cordon de soudure. Cet effort étant amplifié du fait que la longueur "L1", au niveau de la languette (20) d'ouverture, sur laquelle s'applique l'effort d'ouverture est importante. En utilisant un cordon de soudure pelable, on diminue cet effort d'ouverture puisque le cordon pèle dans un premier temps sur la longueur "L1" et est rompu ensuite uniquement sur la largeur "L" du cordon (4).This peelability zone Z1 also facilitates the opening of packaging. Indeed, in the case of a package that can be closed over the entire weld bead, the user must exert a significant effort to directly break the weld bead. This effort is amplified by the fact that the length "L1", at the level of the tongue (20) opening, to which the opening effort applies is important. Using a peelable weld bead, this opening effort is reduced since the bead peels in first on the length "L1" and is then broken only on the width "L" cord (4).

La zone "Z1" du cordon de soudure est de préférence petite tandis que la zone "Z2" couvre le reste de la périphérie de l'emballage (1). Ainsi, on assure tout de même de pouvoir refermer convenablement l'emballage lors de la consommation de produit alimentaire ou médical en plusieurs quantités, et ainsi conserver ledit produit sans utiliser de film alimentaire en supplément.The area "Z1" of the weld bead is preferably small while the zone "Z2" covers the rest of the periphery of the package (1). Thus, we assure all of even being able to close the packaging properly when consuming the product food or medical in several quantities, and thus keep said product without using additional food film.

La zone "Z1" du cordon de soudure se situe dans un mode préférentiel au niveau de la languette (20) d'ouverture de l'emballage qui permet une ouverture facile de celui-ci, et qui par conséquent est le premier endroit sur l'emballage où l'opercule sera libéré du conteneur. Ainsi, la position de la zone "Z1" du cordon de soudure assure de détecter dans tous les cas si l'emballage a été ouvert ou non.The "Z1" zone of the weld bead is in a preferred mode at the level of the opening tab (20) which allows easy opening of this one, and which is therefore the first place on the packaging where the seal will be released from the container. Thus, the position of the zone "Z1" of the weld bead ensures detect in all cases whether the packaging has been opened or not.

La zone "Z1" du cordon de soudure s'étend, dans un mode préférentiel et non limitatif, de un centimètre environ de chaque côté de la languette. Ainsi, on assure que l'opercule est suffisamment recollé sur le conteneur après une première utilisation, ce qui permet de refermer convenablement l'emballage et éviter les contacts trop importants du produit avec le milieu ambiant. En effet, avec une zone "Z1" du cordon qui serait plus prononcée, l'oxygène de l'air pénétrerait très facilement dans l'emballage et oxyderait par conséquent les aliments qui s'y trouvent.The zone "Z1" of the weld bead extends, in a preferred mode and not limiting, about one centimeter on each side of the tongue. Thus, we ensure that the lid is sufficiently glued to the container after a first use, this which allows to properly close the packaging and avoid excessive contact of the product with the ambient environment. Indeed, with a zone "Z1" of the cord which would be more oxygen, the oxygen in the air would very easily penetrate the packaging and oxidize by therefore the food there.

A l'inverse, une zone "Z1" du cordon de soudure trop petite risquerait de créer à nouveau des problèmes de détection des emballages ouverts. De plus, un cordon de soudure trop petit ne permettrait pas d'obtenir une facilité d'ouverture.Conversely, an area "Z1" of the weld bead that is too small would risk again create problems with detection of open packages. In addition, a cord too small a weld would not allow easy opening.

L'emballage (1) de la présente invention est réalisé sur une machine de conditionnement traditionnelle. Dans le cas de l'exemple d'emballage (1) présenté dans la présente description, la structure "a" pour la réalisation du conteneur arrive sous forme de rouleau de film plastique, puis est déroulée et éventuellement thermoformée, formant alors le conteneur (2) de l'emballage qui est de type barquette ou plateau, ou encore sachet. Celui-ci est ensuite empli du produit (19) à conditionner, après quoi il est recouvert par un opercule (3) utilisant une structure "b" également sous forme de rouleau. Le scellage de l'opercule sur l'emballage s'effectuant après avoir injecté un gaz neutre de conservation à l'intérieur dudit emballage. Le scellage de l'opercule sur le conteneur réalisant alors le cordon de soudure.The packaging (1) of the present invention is produced on a traditional packaging. In the case of the packaging example (1) presented in the present description, the structure "a" for the realization of the container arrives in the form of roll of plastic film, then unrolled and possibly thermoformed, then forming the container (2) of the packaging which is of the tray or tray type, or even a sachet. This is then filled with the product (19) to be conditioned, after which it is covered by a cover (3) using a structure "b" also in the form of a roll. The sealing of the seal on the packaging is made after injecting a neutral gas to preserve inside said package. The sealing of the lid on the container then realizing the weld bead.

Ce scellage de l'opercule sur le conteneur s'effectue au moyen d'un outil de soudure appelé plus régulièrement barre de soudure. Les caractéristiques du cordon de soudure obtenues dépendent du temps de soudure, de la pression des soudures, et de la température de soudure. Ces caractéristiques étant différentes selon les trois paramètres ci-dessus choisis.This sealing of the lid on the container is carried out by means of a welding tool more regularly called sealing bar. The characteristics of the cord welds obtained depend on the welding time, the pressure of the welds, and the solder temperature. These characteristics being different according to the three parameters above choose.

Ainsi, pour une pression de soudure et une durée de la soudure constantes, le cordon de soudure aura des propriétés différentes selon la température de soudure choisie.Thus, for a welding pressure and a duration of the welding constant, the weld bead will have different properties depending on the temperature solder chosen.

En se référant à l'explication ci-dessus, les zones "Z1" et "Z2" du cordon de soudure s'obtiennent en chauffant au cours de la fusion les deux couches soudantes, et ce pour une pression et une durée constantes, la zone "Z1" du cordon de soudure à une température T1 et la zone "Z2" du cordon de soudure à une température T2. La température T1 permettant d'obtenir des propriétés de pelage du cordon de soudure et la température T2 permettant d'obtenir les propriétés détachables du conteneur libérant ainsi la couche adhésive.With reference to the above explanation, the zones "Z1" and "Z2" of the weld bead are obtained by heating the two welding layers during the fusion, and this for a constant pressure and duration, the zone "Z1" of the weld bead at a temperature T 1 and zone "Z2" of the weld bead at a temperature T 2 . The temperature T 1 making it possible to obtain the peeling properties of the weld bead and the temperature T 2 making it possible to obtain the detachable properties of the container thus releasing the adhesive layer.

Comme le montre la courbe de la figure 5 qui schématise le fonctionnement, le cordon de soudure a des propriétés de pelage lorsque la température de soudure est inférieure à une température de rupture Tr, et a des propriétés de détachabilité du conteneur lorsque la température de soudure est supérieure à une température de rupture Tr. La température de rupture Tr correspondant au point de rupture entre la zone de pelabilité et la zone de détachabilité du cordon.As shown in the curve in FIG. 5 which diagrams the operation, the weld bead has peeling properties when the welding temperature is lower than a breaking temperature T r , and has properties of detachability of the container when the temperature of weld is greater than a rupture temperature T r . The rupture temperature T r corresponding to the rupture point between the peelability zone and the area of detachment of the bead.

En effet, la figure 6 présente pour l'exemple préférentiel illustré dans la présente description, les courbes de résistance C1,C2, C3 du cordon de soudure en fonction de la température. Ainsi, la courbe C1 présente la courbe d'adhésion du cordon de soudure détachable permettant la refermabilité, la courbe C2 présente la courbe de rupture du cordon de soudure apparaissant dans la zone 23 sur la figure 4, et la courbe C3 présente la courbe de pelabilité du cordon de soudure.In fact, FIG. 6 shows for the preferred example illustrated in the present description, the resistance curves C 1 , C 2 , C 3 of the weld bead as a function of the temperature. Thus, curve C 1 presents the adhesion curve of the detachable weld bead allowing reclosability, curve C 2 presents the rupture curve of the weld bead appearing in the zone 23 in FIG. 4, and curve C 3 presents the peelability curve of the weld bead.

Pour une température inférieure à la température de rupture figurant sur le graphe en figure 6, la courbe C2 se situe sous les courbes C1 et C3, ce qui signifie que la pelabilité du cordon de soudure est moins résistante que la rupture du cordon, et du coup celui-ci pèlera en plusieurs parties (21 et 22) lors de l'ouverture de l'emballage.For a temperature lower than the rupture temperature appearing on the graph in FIG. 6, the curve C 2 is located under the curves C 1 and C 3 , which means that the peelability of the weld bead is less resistant than the rupture of the bead , and suddenly it will peel in several parts (21 and 22) when opening the packaging.

A l'inverse, pour une température supérieure à la température de rupture Tr figurant sur le graphe figure 6, la courbe C1 est située en dessous de la courbe C3 elle-même sous la courbe C2, ce qui signifie que la rupture du cordon de soudure est moins résistante que la pelabilité du cordon de soudure qui va alors rompre puis se détacher, ce qui explique que lors de l'ouverture le cordon de soudure reste attaché complètement sur la structure "b" et se détache par conséquent de la structure "a" libérant alors la couche adhésive à effet permanent sur la structure "a".Conversely, for a temperature higher than the rupture temperature T r shown in the graph in FIG. 6, the curve C 1 is located below the curve C 3 itself under the curve C 2 , which means that the rupture of the weld bead is less resistant than the peelability of the weld bead which will then break and then come off, which explains that during the opening the weld bead remains completely attached to the structure "b" and therefore comes off of structure "a" then releasing the adhesive layer with a permanent effect on structure "a".

D'après cette explication, on réalise donc le cordon de soudure de l'emballage comprenant deux zones "Z1" et "Z2", en chauffant l'outil de soudure à une température T1 inférieure à la température de rupture T r sur la zone de l'outil correspondant à la zone "Z1", et en chauffant en même temps l'outil de soudure à une température de soudure T2 supérieure à la température de rupture Tr sur la zone de l'outil correspondant à la zone "Z2".According to this explanation, the weld bead of the packaging therefore comprising two zones "Z1" and "Z2" is produced, by heating the welding tool to a temperature T 1 lower than the rupture temperature T r on the tool zone corresponding to zone "Z1", and at the same time heating the welding tool to a welding temperature T 2 higher than the breaking temperature T r on the tool zone corresponding to the zone "Z2".

On pourra utiliser pour cela un outil de soudure disposant d'une variation de température égale à la différence de température entre T2 et T1, et permettant de passer d'une température T2 supérieure à la température de rupture Tr, à une température T1 inférieure à la température de rupture Tr.A welding tool could be used for this, having a temperature variation equal to the temperature difference between T 2 and T 1 , and making it possible to go from a temperature T 2 higher than the rupture temperature T r , to a temperature T 1 lower than the rupture temperature T r .

Cette variation de température s'obtient sur l'outil de soudure en utilisant une plaque ou un ruban adhésif ayant une résistance thermique qui réduit la température de T2 à T1 et qui permet d'obtenir la variation des températures souhaitées.This temperature variation is obtained on the soldering tool using a plate or an adhesive tape having a thermal resistance which reduces the temperature from T 2 to T 1 and which makes it possible to obtain the desired temperature variation.

Dans un mode préférentiel, la plaque ou le ruban adhésif permettra d'obtenir une variation de 10 à 20° C pour assurer la variation de température de T2 à T1 en passant le seuil de la température de rupture Tr. Cette plaque est positionnée en dessous de l'outil de soudure, sous la zone correspondant à la zone "Z1" du cordon de soudure.In a preferred embodiment, the plate or the adhesive tape will make it possible to obtain a variation of 10 to 20 ° C to ensure the temperature variation from T 2 to T 1 by passing the threshold of the rupture temperature T r . This plate is positioned below the welding tool, under the zone corresponding to the zone "Z1" of the weld bead.

Pour cela, on utilisera dans un mode préférentiel, un ou plusieurs rubans adhésifs de téflon qui permettent d'obtenir une diminution de la température de de l'ordre de 15° C. Ainsi, on chauffe la barre de soudure à une température T2 de réglage de 150 à 160° C située au dessus de la température de rupture, ce qui permet d'obtenir après passage à travers le ruban de téflon une température T1 de l'ordre de 130 à 135° C située en dessous de la température de rupture. Cela s'effectuant à une pression de soudure de 3 bars et pour une durée de 1.8 à 3 secondes.For this, we will use in a preferred mode, one or more teflon adhesive tapes which allow to obtain a decrease in temperature of about 15 ° C. Thus, the sealing bar is heated to a temperature T 2 adjustment of 150 to 160 ° C located above the rupture temperature, which allows to obtain after passage through the teflon tape a temperature T 1 of the order of 130 to 135 ° C located below the rupture temperature. This is done at a welding pressure of 3 bars and for a duration of 1.8 to 3 seconds.

Une autre façon de réduire de la température sur l'outil de soudure dans la zone correspondant à la zone "Z1" consiste à réaliser des canaux de refroidissement par air ou par eau dans ladite zone d'outil de soudure. Ainsi, on diminue la conductivité thermique du matériau de la barre dans la zone concernée, ce qui diminue la température par rapport à la zone non perforée correspondant à la zone "Z2".Another way to reduce the temperature on the welding tool in the zone corresponding to zone "Z1" consists in making cooling channels by air or by water in said welding tool zone. So we decrease the conductivity the material of the bar in the area concerned, which decreases the temperature relative to the non-perforated area corresponding to the "Z2" area.

On pourrait encore réaliser une barre de soudure spécialisée constituée de deux parties correspondant à la zone "Z1" et à la zone "Z2" utilisant une machine à thermoformer perfectionnée, permettant de gérer séparément les paramètres de pression de soudure, de température de soudure, et de durée de soudure sur ces deux parties. Ces trois paramètres de pression, de durée, et de température sur les zones "Z1" et "Z2" étant choisis en fonction de la structure de l'emballage pour obtenir un cordon de soudure pelable sur la zone "Z1" et un cordon de soudure détachable sur la zone "Z2". We could also make a specialized sealing bar consisting of two parts corresponding to the "Z1" zone and to the "Z2" zone using a improved thermoformer, allowing to manage separately the pressure parameters of welding, welding temperature, and welding time on these two parts. These three pressure, duration, and temperature parameters on zones "Z1" and "Z2" being chosen depending on the structure of the packaging to obtain a peelable weld bead on the zone "Z1" and a detachable weld bead on zone "Z2".

Ainsi, on réalise un cordon (4) de soudure comprenant deux zones "Z1" et "Z2", la première permettant d'avoir un cordon qui pèle et la seconde un cordon qui se détache du conteneur libérant alors la couche adhésive (6) sur cette zone. Ce cordon de soudure s'obtenant en créant une différence de température sur l'outil de soudure au moyen d'une plaque ayant de bonnes propriétés de résistance thermique, ce qui maintien le coût de fabrication de l'emballage quasiment identique au procédé de fabrication des emballages antérieurs.Thus, a weld bead (4) is produced comprising two zones "Z1" and "Z2", the first allowing a peeling cord and the second a cord which detaches from the container, thereby releasing the adhesive layer (6) on this area. This cord of welding obtained by creating a temperature difference on the welding tool by means of a plate having good thermal resistance properties, which keeps the cost of packaging almost identical to the packaging manufacturing process earlier.

On obtient ainsi un emballage avec garantie d'inviolabilité permettant de détecter très facilement si un emballage a été ouvert ou non, tout en conservant les propriétés de refermeture dudit emballage pour la conservation du produit après une première utilisation.This gives a packaging with a guarantee of inviolability allowing very easily detect whether a package has been opened or not, while keeping the reclosing properties of said packaging for preserving the product after first use.

D'autres mises en oeuvre de la présente invention, à la portée de l'Homme de l'Art, auraient pu être envisagées sans pour autant sortir du cadre des revendications.Other implementations of the present invention, within the scope of the Man of the Art, could have been envisaged without departing from the framework demands.

Claims (10)

  1. Tamperproof package (1) of the tray or bag type for packaging food, non-food or medical products (19), allowing easy opening and reclosing of the said package, comprising:
    a structure "a" consisting of at least three layers, that is:
    a support layer (5) positioned on the outside of the package (1),
    an intermediate adhesive layer (6) with a permanent effect,
    a welding layer (7) positioned on the inside of the package (1),
    and possibly a structure "b" comprising at least one welding layer (3) or a structure similar to the structure "a",
    a pouch (8) which is completely sealed before the package is first opened, defined by the welding layer (7) or the welding layers (7 and 3) of the package and the weld bead (4) sealing the package (1),
    characterized in that the weld bead (4) comprises two zones "Z1" and "Z2", the zone "Z1" being a peeling zone and the zone "Z2" being a detachable zone, such that on the first opening of the package (1), the weld bead peels over the first zone "Z1", and detaches over the second zone "Z2", thus freeing the adhesive layer (6) only in the zone "Z2" over which the package may be reclosed, so as to make the package tamperproof and thus ensure that the consumer is able to detect whether or not the said package has been opened before purchase of the product packaged thereinside, and to allow easy opening.
  2. Tamperproof package (1) of tray or bag type for packaging food, non-food or medical products (19), allowing easy opening and reclosing of the said package, according to Claim 1, characterized in that the structure or structures of the package use(s) a welding layer consisting of a material which provides either a peelable aspect to the bead (4), or a detachable aspect to the bead (4) depending on the sealing temperature of the package (1).
  3. Tamperproof package (1) of tray or bag type for packaging food, non-food or medical products, allowing easy opening and reclosing of the said package, according to Claims 1 and 2, characterized in that the ability to peel the bead in the zone "Z1" is obtained by a material having peelable or sealable properties depending on the sealing temperature, such as for example a polyolefin blend such as polyethylene (PE), polypropylene (PP) or an ethylene-vinyl acetate copolymer (EVA), and a blend partly or completely of immiscible monomers or polymers such as polybutylene (PB), ethylene-acrylic acid copolymers, polyesters, modified polyesters or ethylene-alpha-olefin copolymers or by coating with a varnish or a lacquer covering this zone "Z1", or possibly depositing this varnish or lacquer on the layer (13) or (14).
  4. Tamperproof package (1) of tray or bag type for packaging food, non-food or medical products (19), allowing easy opening and reclosing of the said package, according to Claim 1, characterized in that it comprises an opening tongue (20), and in that the zone "Z1" of the welding bead (4) is located at the said opening tongue (20) of the said package.
  5. Tamperproof package (1) of tray or bag type for packaging food, non-food or medical products (19), allowing easy opening and reclosing of the said package, according to Claim 1, characterized in that the ability to peel the bead may be obtained by coating the layer (13) or (14) in the zone Z1 with a layer of lacquer or varnish.
  6. Method of manufacturing the tamperproof package (1) of bag or tray type according to Claim 1, making it possible to obtain a zone "Z1" where the weld bead (4) peels and a zone "Z2" where the weld bead detaches, the said method using a machine for packaging the product (19) producing the package (1) shapes together with the sealing, the method being characterized in that the weld tool is heated to a temperature T1, less than a break temperature Tr, over a first zone corresponding to the zone "Z1" of the weld bead (4), and to a temperature T2, greater than a break temperature Tr, over a second zone corresponding to the zone "Z2" of the weld bead, when sealing the lid (3) onto the container (2), the break temperature Tr corresponding to the break point making it possible to pass from a zone where the weld bead peels to a zone where the weld bead detaches from the container (2).
  7. Method of manufacturing the tamperproof package (1) of bag or tray type making it possible to obtain a zone "Z1" where the weld bead (4) peels and a zone "Z2" where the weld bead detaches from the container, according to Claim 6, characterized in that an adhesive tape or plate, the material of which has a thermal resistance which makes it possible to obtain a temperature variation equal to the difference between the temperature T2 and the temperature T1, between which the break temperature is located, is inserted under the weld tool, over the zone corresponding to the zone "Z1".
  8. Method of manufacturing the tamperproof package (1) of bag or tray type making it possible to obtain a zone "Z1" where the weld bead (4) peels and a zone "Z2" where the weld bead detaches from the container, according to Claim 7, characterized in that at least one adhesive Teflon tape is inserted, making it possible to obtain a temperature variation from T2 to T1 of about 15°C.
  9. Method of manufacturing the tamperproof package (1) of bag or tray type making it possible to obtain a zone "Z1" where the weld bead (4) peels and a zone "Z2" where the weld bead detaches from the container, according to Claim 6, characterized in that cooling channels are made on the weld tool in the zone corresponding to the zone "Z1" in order to obtain a temperature reduction in this zone.
  10. Method of manufacturing the tamperproof package (1) of bag or tray type making it possible to obtain a zone "Z1" where the weld bead (4) peels and a zone "Z2" where the weld bead detaches from the container, according to Claim 6, characterized in that a tool is used having two parts in which it is possible to separately adjust the parameters of weld pressure, of weld duration and of weld temperature.
EP99490015A 1999-06-10 1999-06-10 Tamper proof package and method of manufacturing it Expired - Lifetime EP1063174B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES99490015T ES2220023T3 (en) 1999-06-10 1999-06-10 PACKING WITH GUARANTEE OF INVIOLABILITY AND PROCEDURE FOR MANUFACTURING.
DE69916439T DE69916439T2 (en) 1999-06-10 1999-06-10 Packaging with originality search and its method of manufacture
AT99490015T ATE264236T1 (en) 1999-06-10 1999-06-10 PACKAGING WITH ORIGINALITY ASSURANCE AND METHOD FOR THE PRODUCTION THEREOF
DK99490015T DK1063174T3 (en) 1999-06-10 1999-06-10 Pill-safe packaging and method of manufacturing it
EP99490015A EP1063174B1 (en) 1999-06-10 1999-06-10 Tamper proof package and method of manufacturing it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99490015A EP1063174B1 (en) 1999-06-10 1999-06-10 Tamper proof package and method of manufacturing it

Publications (2)

Publication Number Publication Date
EP1063174A1 EP1063174A1 (en) 2000-12-27
EP1063174B1 true EP1063174B1 (en) 2004-04-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99490015A Expired - Lifetime EP1063174B1 (en) 1999-06-10 1999-06-10 Tamper proof package and method of manufacturing it

Country Status (5)

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EP (1) EP1063174B1 (en)
AT (1) ATE264236T1 (en)
DE (1) DE69916439T2 (en)
DK (1) DK1063174T3 (en)
ES (1) ES2220023T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2807015B1 (en) * 2000-03-31 2003-04-25 Danisco Flexible France LAMINATE PACKAGING SHEET AND RECLOSABLE PACKAGE COMPRISING SAME
FR2889689B1 (en) * 2005-08-12 2010-08-13 Socoplan DEVICE FOR CONDITIONING AND DISPENSING A SAMPLE OF TOTALLY HERMETIC FLUID PRODUCT AND FLUID SEALANT
US8650843B2 (en) 2011-02-04 2014-02-18 Alpma Alpenland Maschinenbau Gmbh Method of packaging products

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941183A1 (en) * 1989-12-13 1991-06-20 Multivac Haggenmueller Kg PACKING MACHINE FOR PRODUCING A RECOVERABLE PACKAGING WITH A PRODUCT
SE505294C2 (en) * 1994-12-13 1997-07-28 Regath Hb Resealable packaging with means for indicating if the packaging is broken
FR2741605B1 (en) * 1995-11-29 1998-01-16 Soplaril Sa SHUTTER STRUCTURE FOR A CONTAINER, CONTAINER PROVIDED WITH SUCH STRUCTURE, AND METHOD FOR SHUTTERING THE CONTAINER

Also Published As

Publication number Publication date
DE69916439T2 (en) 2005-04-21
DE69916439D1 (en) 2004-05-19
ES2220023T3 (en) 2004-12-01
ATE264236T1 (en) 2004-04-15
EP1063174A1 (en) 2000-12-27
DK1063174T3 (en) 2004-08-16

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