EP3390243A1 - Translucent gasket comprising a watermark that is not visible in reflected light - Google Patents

Translucent gasket comprising a watermark that is not visible in reflected light

Info

Publication number
EP3390243A1
EP3390243A1 EP16819611.1A EP16819611A EP3390243A1 EP 3390243 A1 EP3390243 A1 EP 3390243A1 EP 16819611 A EP16819611 A EP 16819611A EP 3390243 A1 EP3390243 A1 EP 3390243A1
Authority
EP
European Patent Office
Prior art keywords
seal
watermark
support
light
visible
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.)
Granted
Application number
EP16819611.1A
Other languages
German (de)
French (fr)
Other versions
EP3390243B1 (en
Inventor
Stéphane Triquet
Rémy BISCHOFF
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.)
Mft Generale De Joints
Manufacture Generale de Joints SAS
Original Assignee
Mft Generale De Joints
Manufacture Generale de Joints SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mft Generale De Joints, Manufacture Generale de Joints SAS filed Critical Mft Generale De Joints
Publication of EP3390243A1 publication Critical patent/EP3390243A1/en
Application granted granted Critical
Publication of EP3390243B1 publication Critical patent/EP3390243B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs
    • 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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/24—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes
    • B65D51/245—Closures not otherwise provided for combined or co-operating with auxiliary devices for non-closing purposes provided with decoration, information or contents indicating devices, labels
    • 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
    • B65D55/00—Accessories for container closures not otherwise provided for
    • B65D55/02—Locking devices; Means for discouraging or indicating unauthorised opening or removal of closure
    • B65D55/06—Deformable or tearable wires, strings, or strips; Use of seals, e.g. destructible locking pins
    • B65D55/066—Foil covers combined with outer closures and comprising interacting or interposed tamper indicating means visible through the outer closure, e.g. releasable coloured dyes, changeable patterns, pierceable membranes, visible through a transparent closure or through a window

Definitions

  • the invention relates to a new seal whose essential feature is to be provided with a watermark.
  • watermark denotes a drawing or an image that is observable or visible in transmitted light.
  • observed or visible in transmitted light we mean of an element (here the watermark) that it is visible, in particular to the naked eye, when it is placed between the eye of the observer and a source luminous so that the eye perceives the rays of the light source through the observed element.
  • the watermark is visible by transparency in visible light, that is to say at a wavelength between 380 and 780 nm.
  • the watermarks are visible in transmitted light but they are not in reflection, that is to say when the eye of the observer and the light source are placed on the same side of the element to be observed. eye thus perceiving the rays of the light source reflecting on the observed element.
  • the seal of the invention is of the type used for sealing consumer products, in particular in the food or cosmetic field.
  • the one-piece seals consist of a foamed support or not.
  • a foam it is made of polypropylene (PP), polyethylene (PE) or polyethylene terephthalate (PET) foams, optionally laminated with PP, PE or polyethylene terephthalate (PET) films.
  • PP polypropylene
  • PE polyethylene
  • PET polyethylene terephthalate
  • These seals have the function of sealing the packages vis-à-vis firstly the content, liquid or not, but also vis-à-vis the oxygen, as well as vis-à-vis the flavors and smells.
  • These seals are generally delivered to the capsule or cap manufacturer. The manufacturer inserts them at the bottom of the capsule or corks and delivers them to the end customer.
  • the invention also relates to double-piece gaskets intended to be glued or sealed on the rim of the container.
  • These seals consist of two parts respectively a lid and a support.
  • the lid is placed all around the upper rim of the neck of the container or drinking, thus isolating the container from the outside.
  • the support is usually thicker. It is inserted, without being fixed, at the bottom of the cap. Prior to the first opening of the container, the support and the lid may be secured by means of a temporary adhesive.
  • the bonding is carried out conventionally by means of an adhesive compatible with the rim and the underside of the cover.
  • the seal When the seal is intended to be sealed on the container, it has a sealing layer applied on its underside. Sealing is done by induction heat sealing through the plug. This heat sealing is made possible by the combined action of a conductive material, inserted in the thickness preferably, of the lid, which, under the effect of the magnetic induction heats up, causing the softening of the film of sealing on the rim.
  • the distribution circuit of these seals is identical to that set up and described previously for monobloc seals.
  • the document US2003 / 0127846 describes an anti-counterfeiting device in the form of a crimping tab whose inner face is covered by an image appearing only in contact with oxygen . As the tab is removed, the image, including the brand of the drink, is revealed in contact with oxygen.
  • the solution that is required is that of the seal marking with the effigy of the seal manufacturer.
  • the constraint for the consumer product manufacturer is that it does not wish for its part that this marking is visible to the end consumer. Indeed, there is no interest in this being the case, besides the aesthetic aspect that could be affected.
  • US3628271 describes capsules whose outer surface is covered with a layer revealing a date of expiry under UV light.
  • US7789074 discloses a seal consisting of a compressible layer on which is applied a transparent film.
  • the compressible layer is structured. It is in the form of a series of extruded filaments.
  • the structure of the compressible layer is visible in reflection whatever the face of the joint so that it is not a watermark.
  • the problem to be solved by the invention is to develop a seal provided with an identification means that is not visible to the consumer.
  • the subject of the invention is a light-transmissive seal, in practice visible light intended in particular to be inserted at the bottom of a plug or capsule in the form of a medium which itself transmits light.
  • light advantageously made of an expanded material on at least one of the faces of which is applied a material, referred to in the following description and in the claims by the term "coating" also transmitting light.
  • This seal is characterized in that the face of the support on which the coating is applied and more specifically the coating itself, has a watermark, that is to say a visible image in transmitted light and not visible in reflection.
  • the seal of the invention is a one-piece seal or the support part of a double-piece seal.
  • a monobloc seal whether it is the capsule or cap manufacturer or the manufacturer of the final product, whether it receives the capsule + seal assembly or more rarely the seal directly, all can perfectly identify the source of the seal.
  • the identification of the seal in practice of its support can be performed only after separation of the support relative to the lid.
  • the material constituting the support is an expanded material which is preferably selected from the group consisting of low density polyethylene (PE), polypropylene (PP), PET, polystyrene (PS).
  • the density of the foam is between 30 and 500 kg / m 3 , advantageously between 150 and 400 kg / m 3 , that is to say a medium density.
  • the thickness of the foam is advantageously between 1 and 3 mm.
  • the material constituting the support is an unexpanded material which is preferably selected from the group comprising polyethylene, polyethylene copolymers, thermoplastic elastomers, PP, PET, PS.
  • the density of the support is in this case between 800 and 1500 kg / m 3 .
  • the support is extruded, having regard to the nature of the materials used.
  • the support is made of unexpanded, non-extruded material and transparent light. It may be for example density cardboard advantageously between 40 and 600 kg / m 3 .
  • the light transmitting coating applied to the support comprises a sheet of paper and / or at least one polymer film.
  • the light-transmitting coating comprises at least one polymeric film.
  • the polymer film is chosen from the group comprising PET, PVDC, PP, polyester, PA (polyamide), PE (polyethylene).
  • the film preferably has a thickness of between 5 and 100 micrometers.
  • the light transmitting coating comprises 2 polymer films.
  • the light transmitting material is a complex consisting of a polyester top film and a polyethylene bottom film.
  • the 2 films once associated are then calendered or laminated on the support.
  • the light-transmitting coating is applied to one or both sides of the extruded or non-extruded support.
  • the watermark is applied to the face comprising the light transmitting coating.
  • the seal can be positioned at the bottom of the capsule or cap in any direction.
  • the shape of the joints of the invention will be determined according to the shape of the cap or the capsule.
  • the light-transmitting coating has a watermark.
  • This watermark can be obtained in different ways being recalled that by definition, it is a visible pattern in transmitted light.
  • the light-transmissive coating is white in color and the expanded or non-foamed material is preferably also white in color.
  • the watermark is in the form of a white print and is preferably applied to the back of the light-transmitting coating. Under these conditions, the coating is advantageously a polymer film.
  • the watermark is applied between the support and the light-transmitting coating, in particular the film.
  • the watermark that is to say a visible image in transmitted light and not visible in reflection is preferably applied to the back of the light-transmitting coating.
  • a repetition of a white pattern of marked color is printed on a strip of white PET polymer film.
  • the PET film has a thickness of 25 microns.
  • This strip of film is laminated on an expanded strip of white PE.
  • the foam has a thickness of 1 mm and a density of 200 kg / m 3 . In the thickness of the complex obtained, the joints are cut in the desired size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

The invention relates to a light-transmitting gasket intended to be positioned on the base of a stopper or cap, in the form of a support having a light-transmitting coating applied to at least one of the surfaces thereof. The gasket is characterised in that the coating contains a watermark, i.e. an image visible in transmitted light, but not visible in reflected light.

Description

JOINT D'ÉTANCHÉITÉ TRANSLUCENT MUNI D'UN FILIGRANE NON VISIBLE EN RÉFLEXION  TRANSLUCENT SEAL WITH NON-VISIBLE WATERMARK IN REFLECTION
L'invention a pour objet un nouveau joint dont la caractéristique essentielle est d'être muni d'un filigrane. The invention relates to a new seal whose essential feature is to be provided with a watermark.
Dans la suite de la description et dans les revendications, par le terme « filigrane », on désigne un dessin ou une image observable ou visible en lumière transmise. Par « observable ou visible en lumière transmise », on entend d'un élément (ici le filigrane) qu'il est visible, notamment à l'œil nu, lorsqu'il est placé entre l'œil de l'observateur et une source lumineuse de sorte que l'œil perçoive les rayons de la source lumineuse à travers l'élément observé. En pratique, le filigrane est visible par transparence en lumière visible, c'est-à-dire à une longueur d'onde comprise entre 380 et 780 nm. In the remainder of the description and in the claims, the term "watermark" denotes a drawing or an image that is observable or visible in transmitted light. By "observable or visible in transmitted light", we mean of an element (here the watermark) that it is visible, in particular to the naked eye, when it is placed between the eye of the observer and a source luminous so that the eye perceives the rays of the light source through the observed element. In practice, the watermark is visible by transparency in visible light, that is to say at a wavelength between 380 and 780 nm.
Les filigranes sont visibles en lumière transmise mais ils ne le sont pas en réflexion, c'est- à-dire lorsque l'œil de l'observateur et la source lumineuse sont placés d'un même côté de l'élément à observer, l'œil percevant ainsi les rayons de la source lumineuse se réfléchissant sur l'élément observé. The watermarks are visible in transmitted light but they are not in reflection, that is to say when the eye of the observer and the light source are placed on the same side of the element to be observed. eye thus perceiving the rays of the light source reflecting on the observed element.
Le joint de l'invention est du type de ceux utilisés pour l'obturation des produits de grande consommation en particulier, dans le domaine alimentaire ou cosmétique. The seal of the invention is of the type used for sealing consumer products, in particular in the food or cosmetic field.
Il s'agit notamment d'un joint monobloc simple. De manière connue, les joints monobloc sont constitués d'un support moussé ou non. Lorsqu'il s'agit d'une mousse, il s'agit de mousses de polypropylène (PP), de polyéthylène (PE) ou de polyéthylène téréphtalate (PET), éventuellement contrecollées avec des films de PP, PE ou polyéthylène téréphtalate (PET). Ces joints ont pour fonction d'assurer l'étanchéité des emballages vis- à-vis tout d'abord du contenu, liquide ou non, mais également vis-à-vis de l'oxygène, ainsi que vis-à-vis des arômes et odeurs. Ces joints sont en général livrés au fabriquant de capsule ou de bouchon. Le fabriquant les insère au fond de la capsule ou du bouchons et les livre au client final. Celui-ci, remplit les contenants (flacon, bouteille, pot...) qu'il vient ensuite obturer par le biais de la capsule ou du bouchon muni de son joint. L'invention concerne également les joints double pièce destinés à être collés ou scellés sur le buvant du récipient. Ces joints sont constitués de deux pièces respectivement un opercule et un support. L'opercule est mis en place sur tout le pourtour du rebord supérieur du col du récipient ou buvant, isolant de la sorte le récipient de l'extérieur. Le support est généralement plus épais. Il est inséré, sans être pour autant fixé, au fond du bouchon. Préalablement à la première ouverture du récipient, le support et l'opercule peuvent être solidarisés par le biais d'un adhésif temporaire. On distingue les joints double pièce collés ou thermoscellés. En ce qui concerne les double pièces collés, le collage est effectué classiquement par le biais d'une colle compatible avec le buvant et la face inférieure de l'opercule. These include a single monobloc seal. In known manner, the one-piece seals consist of a foamed support or not. In the case of a foam, it is made of polypropylene (PP), polyethylene (PE) or polyethylene terephthalate (PET) foams, optionally laminated with PP, PE or polyethylene terephthalate (PET) films. ). These seals have the function of sealing the packages vis-à-vis firstly the content, liquid or not, but also vis-à-vis the oxygen, as well as vis-à-vis the flavors and smells. These seals are generally delivered to the capsule or cap manufacturer. The manufacturer inserts them at the bottom of the capsule or corks and delivers them to the end customer. This one, fills the containers (bottle, bottle, pot ...) that it then obturates by means of the capsule or the stopper provided with its seal. The invention also relates to double-piece gaskets intended to be glued or sealed on the rim of the container. These seals consist of two parts respectively a lid and a support. The lid is placed all around the upper rim of the neck of the container or drinking, thus isolating the container from the outside. The support is usually thicker. It is inserted, without being fixed, at the bottom of the cap. Prior to the first opening of the container, the support and the lid may be secured by means of a temporary adhesive. There are two-piece joints glued or heat sealed. As regards the double bonded parts, the bonding is carried out conventionally by means of an adhesive compatible with the rim and the underside of the cover.
Lorsque le joint est destiné à être scellé sur le récipient, il présente une couche de scellage appliquée sur sa face inférieure. Le scellage est effectué par thermoscellage par induction à travers le bouchon. Ce thermoscellage est rendu possible par l'action combinée d'un matériau conducteur, inséré dans l'épaisseur de préférence, de l'opercule, qui, sous l'effet de l'induction magnétique s'échauffe, entraînant le ramollissement du film de scellage sur le buvant. Le circuit de distribution de ces joints est identique à celui mis en place et décrit précédemment pour les joints monobloc. When the seal is intended to be sealed on the container, it has a sealing layer applied on its underside. Sealing is done by induction heat sealing through the plug. This heat sealing is made possible by the combined action of a conductive material, inserted in the thickness preferably, of the lid, which, under the effect of the magnetic induction heats up, causing the softening of the film of sealing on the rim. The distribution circuit of these seals is identical to that set up and described previously for monobloc seals.
De nombreuses solutions ont été proposées pour permettre de vérifier que le produit acheté par le consommateur était un produit d'origine et/ou n'avait jamais été ouvert. Many solutions have been proposed to verify that the product purchased by the consumer was a product of origin and / or had never been opened.
A titre d'exemple, dans le domaine des capsules de vin, le document US2003/0127846 décrit un dispositif anti contrefaçon sous la forme d'une languette de sertissage dont la face interne est recouverte par une image apparaissant seulement au contact de l'oxygène. A mesure que la languette est retirée, l'image, notamment la marque de la boisson, est révélée au contact de l'oxygène. For example, in the field of wine capsules, the document US2003 / 0127846 describes an anti-counterfeiting device in the form of a crimping tab whose inner face is covered by an image appearing only in contact with oxygen . As the tab is removed, the image, including the brand of the drink, is revealed in contact with oxygen.
Le document US2014/0224800 décrit un joint double pièce du type lift n peel® dont l'une des couches de l'opercule est recouverte d'un hologramme. L'hologramme apparaît au moment où l'opercule est retiré, ce qui permet de garantir l'origine du produit. Par ailleurs, l'application de l'hologramme sur toute la surface de la couche y compris sur la partie solidaire du buvant fait que l'opercule ne peut être remis en position une fois séparé. Le joint décrit permet donc de garantir l'inviolabilité du produit. Pour les fabricants de produits cosmétiques et alimentaires, il est essentiel de garantir au consommateur l'origine des produits et leur inviolabilité. Du point de vue du fabriquant, il est également essentiel que le joint qui lui est fourni provienne du fabriquant de joint sélectionné à l'origine. En effet, dans la mesure où la plupart du temps, le fabricant du produit fini n'est pas livré directement par le fabriquant de joint mais par un intermédiaire fabricant de capsule, le risque existe que le joint finalement inséré dans la capsule ne soit pas celui d'origine. Or, lorsqu'on connaît la spécificité des joints en terme notamment de barrière à l'oxygène, arôme, odeur en fonction de la nature du produit à protéger, on imagine facilement les conséquences de l'insertion d'un joint qui ne répondrait pas aux spécificités requises. The document US2014 / 0224800 describes a double piece seal of the type lift n peel®, one of the layers of the lid is covered with a hologram. The hologram appears at the moment the cap is removed, which guarantees the origin of the product. By elsewhere, the application of the hologram over the entire surface of the layer including the integral portion of the rim that the lid can not be returned to position once separated. The seal described thus makes it possible to guarantee the inviolability of the product. For manufacturers of cosmetic and food products, it is essential to guarantee the consumer the origin of the products and their inviolability. From the manufacturer's point of view, it is also essential that the seal supplied to it comes from the original seal manufacturer. Indeed, since most of the time, the manufacturer of the finished product is not delivered directly by the seal manufacturer but by a capsule manufacturer, the risk exists that the seal finally inserted in the capsule is not the original one. However, when we know the specificity of the joints in terms of oxygen barrier, aroma, smell depending on the nature of the product to be protected, we can easily imagine the consequences of inserting a seal that would not respond. the specificities required.
La solution qui s'impose est celle du marquage du joint à l'effigie du fabricant de joint. La contrainte pour le fabricant de produit de grande consommation est qu'il ne souhaite pas pour sa part que ce marquage soit visible du consommateur final. En effet, il n'y a aucun intérêt à ce que ce soit le cas, outre l'aspect esthétique qui pourrait être affecté. The solution that is required is that of the seal marking with the effigy of the seal manufacturer. The constraint for the consumer product manufacturer is that it does not wish for its part that this marking is visible to the end consumer. Indeed, there is no interest in this being the case, besides the aesthetic aspect that could be affected.
Le document US3628271 décrit des capsules dont la surface externe est recouverte d'une couche révélant une date de péremption sous lumière UV. US3628271 describes capsules whose outer surface is covered with a layer revealing a date of expiry under UV light.
Le document US7789074 décrit un joint constitué d'une couche compressible sur laquelle est appliqué un film transparent. La couche compressible est structurée. Elle se présente sous la forme d'une série de filaments extrudés. La structure de la couche compressible est visible en réflexion quelle que soit la face du joint de telle sorte qu'il ne s'agit pas d'un filigrane. Le problème que se propose de résoudre l'invention est de développer un joint muni d'un moyen d'identification qui ne soit pas visible du consommateur. US7789074 discloses a seal consisting of a compressible layer on which is applied a transparent film. The compressible layer is structured. It is in the form of a series of extruded filaments. The structure of the compressible layer is visible in reflection whatever the face of the joint so that it is not a watermark. The problem to be solved by the invention is to develop a seal provided with an identification means that is not visible to the consumer.
Pour ce faire, le déposant a eu l'idée d'intégrer un filigrane dans l'épaisseur du joint. Plus précisément, l'invention a pour objet un joint transmettant la lumière, en pratique la lumière visible destiné notamment à être inséré au fond d'un bouchon ou d'une capsule se présentant sous la forme d'un support transmettant lui-même la lumière réalisé avantageusement en un matériau expansé sur au moins une des faces duquel est appliqué un matériau, désigné dans la suite de la description et dans les revendications par le terme « revêtement » transmettant également la lumière. To do this, the applicant had the idea of embedding a watermark in the thickness of the joint. More specifically, the subject of the invention is a light-transmissive seal, in practice visible light intended in particular to be inserted at the bottom of a plug or capsule in the form of a medium which itself transmits light. light advantageously made of an expanded material on at least one of the faces of which is applied a material, referred to in the following description and in the claims by the term "coating" also transmitting light.
Ce joint se caractérise en ce que la face du support sur lequel est appliqué le revêtement et plus précisément le revêtement lui-même, présente un filigrane, c'est-à-dire une image visible en lumière transmise et non visible en réflexion. This seal is characterized in that the face of the support on which the coating is applied and more specifically the coating itself, has a watermark, that is to say a visible image in transmitted light and not visible in reflection.
Selon l'invention, le joint de l'invention est un joint monobloc ou la partie support d'un joint double pièce. De la sorte, dans le cas d'un joint monobloc, que ce soit le fabricant de capsule ou de bouchon ou le fabriquant du produit final, qu'il reçoive l'ensemble capsule + joint ou plus rarement le joint directement, tous peuvent parfaitement identifier la provenance du joint. Dans le cas d'un joint double pièce, l'identification du joint en pratique de son support, ne pourra être effectuée qu'après séparation du support par rapport à l'opercule. According to the invention, the seal of the invention is a one-piece seal or the support part of a double-piece seal. In this way, in the case of a monobloc seal, whether it is the capsule or cap manufacturer or the manufacturer of the final product, whether it receives the capsule + seal assembly or more rarely the seal directly, all can perfectly identify the source of the seal. In the case of a double-piece seal, the identification of the seal in practice of its support, can be performed only after separation of the support relative to the lid.
En effet, il suffit de placer le joint entre l'œil et une source lumineuse pour détecter le dessin en filigrane. Le terme « dessin » recouvre bien entendu tout type de marquage, que ce soit un logo, une dénomination, un dessin, une image, un motif etc.... Comme déjà dit, la vérification peut se faire directement lorsque le joint est un joint monobloc. Lorsqu'il s'agit d'un joint double, la vérification peut se faire après séparation du support et de l'opercule ou sans séparation préalable lorsque le joint n'est pas totalement opaque. Selon un premier mode de réalisation, le matériau constitutif du support est un matériau expansé qui est de préférence choisi dans le groupe comprenant polyéthylène (PE) basse densité, polypropylène (PP), PET, polystyrène (PS). En pratique, la densité de la mousse est comprise entre 30 et 500 kg/m3, avantageusement comprise entre 150 et 400 kg/m3, c'est-à-dire une densité moyenne. Selon une autre caractéristique, l'épaisseur de la mousse est avantageusement comprise entre 1 et 3 mm. Indeed, it is sufficient to place the seal between the eye and a light source to detect the watermark design. The term "drawing" covers of course any type of marking, whether it is a logo, a name, a drawing, an image, a motif, etc. As already stated, the verification can be done directly when the seal is a monobloc seal. When it is a double seal, the verification can be done after separation of the support and the seal or without prior separation when the seal is not completely opaque. According to a first embodiment, the material constituting the support is an expanded material which is preferably selected from the group consisting of low density polyethylene (PE), polypropylene (PP), PET, polystyrene (PS). In practice, the density of the foam is between 30 and 500 kg / m 3 , advantageously between 150 and 400 kg / m 3 , that is to say a medium density. According to another characteristic, the thickness of the foam is advantageously between 1 and 3 mm.
Selon un second mode de réalisation, le matériau constitutif du support est un matériau non expansé qui est de préférence choisi dans le groupe comprenant polyéthylène, copolymères de polyéthylène, élastomères thermoplastiques, PP, PET, PS. En pratique, la densité du support est dans ce cas comprise entre 800 et 1500 kg/m3. According to a second embodiment, the material constituting the support is an unexpanded material which is preferably selected from the group comprising polyethylene, polyethylene copolymers, thermoplastic elastomers, PP, PET, PS. In practice, the density of the support is in this case between 800 and 1500 kg / m 3 .
Dans les deux modes de réalisation précédents, le support est extrudé, eu égard à la nature des matériaux mise en œuvre. In the two previous embodiments, the support is extruded, having regard to the nature of the materials used.
Dans un autre mode de réalisation, le support est réalisé en un matériau non expansé, non extrudé et transparent la lumière. Il peut s'agir par exemple de carton de densité avantageusement comprise entre 40 et 600 kg/m3. In another embodiment, the support is made of unexpanded, non-extruded material and transparent light. It may be for example density cardboard advantageously between 40 and 600 kg / m 3 .
Selon l'invention, le revêtement transmettant la lumière appliqué sur le support comprend une feuille de papier et/ou au moins un film polymère. According to the invention, the light transmitting coating applied to the support comprises a sheet of paper and / or at least one polymer film.
Dans un mode de réalisation préféré, le revêtement transmettant la lumière comprend au moins un film polymère. In a preferred embodiment, the light-transmitting coating comprises at least one polymeric film.
En pratique, le film polymère est choisi dans le groupe comprenant PET, PVDC, PP, polyester, PA (polyamide), PE (polyéthylène). Le film a de préférence une épaisseur comprise entre 5 et 100 micromètres. In practice, the polymer film is chosen from the group comprising PET, PVDC, PP, polyester, PA (polyamide), PE (polyethylene). The film preferably has a thickness of between 5 and 100 micrometers.
Dans un mode de réalisation particulier, le revêtement transmettant la lumière comprend 2 films polymère. In a particular embodiment, the light transmitting coating comprises 2 polymer films.
Il peut s'agir de 2 films coextrudés ou de 2 films associés au moyen d'une colle. Dans un mode de réalisation particulier, le matériau transmettant la lumière est un complexe constitué d'un film supérieur en polyester et d'un film inférieur en polyéthylène. It can be 2 coextruded films or 2 associated films by means of an adhesive. In a particular embodiment, the light transmitting material is a complex consisting of a polyester top film and a polyethylene bottom film.
Les 2 films une fois associés sont ensuite calandrés ou contrecollés sur le support. Le revêtement transmettant la lumière est appliqué sur une ou les deux faces du support extrudé ou non. Lorsque le support extrudé ou non n'est recouvert que sur une seule face, le filigrane est appliqué sur la face comprenant le revêtement transmettant la lumière. Le joint peut être positionné au fond de la capsule ou du bouchon dans n'importe quel sens. The 2 films once associated are then calendered or laminated on the support. The light-transmitting coating is applied to one or both sides of the extruded or non-extruded support. When the extruded or non-extruded support is only covered on one side, the watermark is applied to the face comprising the light transmitting coating. The seal can be positioned at the bottom of the capsule or cap in any direction.
Bien entendu, la forme des joints de l'invention sera déterminée en fonction de la forme du bouchon ou de la capsule. Of course, the shape of the joints of the invention will be determined according to the shape of the cap or the capsule.
Selon une caractéristique essentielle, le revêtement transmettant la lumière présente un filigrane. Ce filigrane peut être obtenu de différentes manières étant rappelé que par définition, il s'agit d'un dessin visible en lumière transmise. Dans un mode de réalisation préféré, le revêtement transmettant la lumière est de couleur blanche et le matériau expansé ou non est avantageusement de couleur blanche également. Parallèlement, le filigrane se présente sous la forme d'une impression de couleur blanche et est appliquée de préférence au dos du revêtement transmettant la lumière. Dans ces conditions, le revêtement est avantageusement un film polymère. According to an essential characteristic, the light-transmitting coating has a watermark. This watermark can be obtained in different ways being recalled that by definition, it is a visible pattern in transmitted light. In a preferred embodiment, the light-transmissive coating is white in color and the expanded or non-foamed material is preferably also white in color. At the same time, the watermark is in the form of a white print and is preferably applied to the back of the light-transmitting coating. Under these conditions, the coating is advantageously a polymer film.
Enfin et selon une autre caractéristique, le filigrane est appliqué entre le support et le revêtement transmettant la lumière, en particulier le film. Comme déjà dit, le filigrane, c'est-à-dire une image visible en lumière transmise et non visible en réflexion est appliqué de préférence au dos du revêtement transmettant la lumière. Finally and according to another characteristic, the watermark is applied between the support and the light-transmitting coating, in particular the film. As already stated, the watermark, that is to say a visible image in transmitted light and not visible in reflection is preferably applied to the back of the light-transmitting coating.
L'invention et les avantages qui en découlent ressortiront bien de la description qui suit. The invention and the advantages thereof will be apparent from the following description.
On imprime sur une bande de film polymère PET blanc une répétition de dessin de couleur blanche de manière repérée. Le film PET a une épaisseur de 25 microns. A repetition of a white pattern of marked color is printed on a strip of white PET polymer film. The PET film has a thickness of 25 microns.
On contrecolle cette bande de film sur une bande de PE expansé de couleur blanche. La mousse à une épaisseur de 1 mm et une densité de 200 kg/m3. On découpe de manière repérée, dans l'épaisseur du complexe obtenu, les joints à la taille désirée. This strip of film is laminated on an expanded strip of white PE. The foam has a thickness of 1 mm and a density of 200 kg / m 3 . In the thickness of the complex obtained, the joints are cut in the desired size.
En plaçant le joint entre l'œil et une source lumineuse, on observe le filigrane entre le support et le matériau transmettant la lumière. By placing the seal between the eye and a light source, we observe the watermark between the support and the light transmitting material.
L'invention et les avantages qui en découlent ressortent bien de la description qui précède. On note en particulier la possibilité de garantir aux fabricants des produits de grande consommation, l'origine des joints mis en œuvre dans les emballages. The invention and the advantages derived therefrom are apparent from the foregoing description. In particular, it is possible to guarantee the manufacturers of consumer products the origin of the seals used in packaging.

Claims

REVENDICATIONS
1/ Joint transmettant la lumière destiné notamment à être inséré au fond d'un bouchon ou d'une capsule se présentant sous la forme d'un support sur au moins une des faces duquel est appliqué un revêtement transmettant la lumière, caractérisé en ce que le revêtement contient un filigrane, c'est-à-dire une image visible en lumière transmise et non visible en réflexion. Light-transmissive seal intended in particular to be inserted at the bottom of a plug or capsule in the form of a support on at least one of the faces of which a light transmitting coating is applied, characterized in that the coating contains a watermark, that is to say an image visible in transmitted light and not visible in reflection.
21 Joint selon la revendication 1 , caractérisé en ce que le revêtement transmettant la lumière comprend une feuille de papier et/ou au moins un film polymère. Seal according to claim 1, characterized in that the light transmitting coating comprises a paper sheet and / or at least one polymer film.
3/ Joint selon l'une des revendications précédentes, caractérisé en ce que le support est réalisé en un matériau expansé et est avantageusement choisi dans le groupe comprenant polyéthylène (PE) basse densité, polypropylène (PP), PET, polystyrène (PS). 3 / seal according to one of the preceding claims, characterized in that the support is made of an expanded material and is preferably selected from the group consisting of low density polyethylene (PE), polypropylene (PP), PET, polystyrene (PS).
4/ Joint selon la revendication 3, caractérisé en ce que le matériau expansé a une densité comprise entre 30 et 500 kg/m3. 4 / seal according to claim 3, characterized in that the expanded material has a density of between 30 and 500 kg / m 3 .
5/ Joint selon l'une des revendications 3 ou 4, caractérisé en ce que le matériau expansé a une épaisseur comprise entre 1 et 3 mm. 5 / seal according to one of claims 3 or 4, characterized in that the expanded material has a thickness of between 1 and 3 mm.
6/ Joint selon l'une des revendications 1 à 2, caractérisé en ce que le support est réalisé en un matériau non expansé et est avantageusement choisi dans le groupe comprenant polyéthylène, copolymères de polyéthylène, élastomères thermoplastiques, PP, PET, PS. 6 / Joint according to one of claims 1 to 2, characterized in that the support is made of an unexpanded material and is preferably selected from the group comprising polyethylene, polyethylene copolymers, thermoplastic elastomers, PP, PET, PS.
7/ Joint selon la revendication 6, caractérisé en ce que le matériau a une densité comprise entre 800 et 1500 kg/m3. 7 / seal according to claim 6, characterized in that the material has a density of between 800 and 1500 kg / m 3 .
8/ Joint selon l'une des revendications 1 à 2, caractérisé en ce que le support est réalisé en un matériau non expansé, non extrudé, avantageusement du papier. 8 / seal according to one of claims 1 to 2, characterized in that the support is made of unexpanded material, not extruded, preferably paper.
91 Joint selon la revendication 8, caractérisé en ce que le papier a une densité comprise entre 40 et 600 kg/m3. 10/ Joint selon l'une des revendications 2 à 9, caractérisé en ce que le film polymère est choisi dans le groupe comprenant PET, PVDC, polyester, PP, PA, PE. 91 Joint according to claim 8, characterized in that the paper has a density of between 40 and 600 kg / m 3 . 10 / seal according to one of claims 2 to 9, characterized in that the polymer film is selected from the group consisting of PET, PVDC, polyester, PP, PA, PE.
11/ Joint selon l'une des revendications 2 à 10, caractérisé en ce que le film polymère est de couleur blanche. 11 / Joint according to one of claims 2 to 10, characterized in that the polymer film is white.
12/ Joint selon l'une des revendications 2 à 11 caractérisé en ce que le filigrane se présente sous la forme d'une impression de couleur blanche. 13/ Joint selon l'une des revendications précédentes, caractérisé en ce que le filigrane se présente sous la forme d'une impression appliquée entre le support et le revêtement transmettant la lumière. 12 / seal according to one of claims 2 to 11 characterized in that the watermark is in the form of a white print. 13 / Seal according to one of the preceding claims, characterized in that the watermark is in the form of an impression applied between the support and the light transmitting coating.
14/ Joint selon l'une des revendications précédentes, caractérisé en ce que le filigrane est appliqué au dos du revêtement transmettant la lumière. 14 / Joint according to one of the preceding claims, characterized in that the watermark is applied to the back of the light transmitting coating.
EP16819611.1A 2015-12-17 2016-12-06 Translucent gasket comprising a watermark that is not visible in reflected light Active EP3390243B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1562564A FR3045577B1 (en) 2015-12-17 2015-12-17 SEAL EQUIPPED WITH A WATERMARK
PCT/FR2016/053233 WO2017103377A1 (en) 2015-12-17 2016-12-06 Translucent gasket comprising a watermark that is not visible in reflected light

Publications (2)

Publication Number Publication Date
EP3390243A1 true EP3390243A1 (en) 2018-10-24
EP3390243B1 EP3390243B1 (en) 2019-09-25

Family

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EP16819611.1A Active EP3390243B1 (en) 2015-12-17 2016-12-06 Translucent gasket comprising a watermark that is not visible in reflected light

Country Status (5)

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US (1) US20180362230A1 (en)
EP (1) EP3390243B1 (en)
CN (1) CN107406177A (en)
FR (1) FR3045577B1 (en)
WO (1) WO2017103377A1 (en)

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GB8810360D0 (en) * 1988-04-30 1988-06-08 Mardon Illingworth Tamper evident package & closure means
US4877143A (en) * 1988-06-16 1989-10-31 Travisano Frank P Tamper evident indicating means
DE29803182U1 (en) * 1998-02-24 1998-04-23 Bender Klaus Dipl Ing Fh Fresh seal
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GB2443185A (en) * 2006-10-27 2008-04-30 Closures Ltd Transparent closure and visible seal member arrangement
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EP2379300A2 (en) * 2008-12-17 2011-10-26 Dow Global Technologies LLC Continuous process for manufacturing a shaped foam article
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Also Published As

Publication number Publication date
FR3045577B1 (en) 2020-09-11
CN107406177A (en) 2017-11-28
FR3045577A1 (en) 2017-06-23
US20180362230A1 (en) 2018-12-20
EP3390243B1 (en) 2019-09-25
WO2017103377A1 (en) 2017-06-22

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