EP2903906A1 - Composite lid - Google Patents

Composite lid

Info

Publication number
EP2903906A1
EP2903906A1 EP13782796.0A EP13782796A EP2903906A1 EP 2903906 A1 EP2903906 A1 EP 2903906A1 EP 13782796 A EP13782796 A EP 13782796A EP 2903906 A1 EP2903906 A1 EP 2903906A1
Authority
EP
European Patent Office
Prior art keywords
closure
edge
composite
cork
artificial material
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
EP13782796.0A
Other languages
German (de)
French (fr)
Other versions
EP2903906B1 (en
Inventor
Enrique Garcia-Cuenca
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.)
AU LIEGEUR - ETS J. PONTNEAU DENIS
COMPAGNIE DES SALINS DU MIDI ET DES SALINES DE L'E
Original Assignee
Au Liegeur - Ets J Pontneau Denis
Salins Du Midi Et Des Salines De L'Est Cie
Au Liegeur Ets J Pontneau Denis
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 Au Liegeur - Ets J Pontneau Denis, Salins Du Midi Et Des Salines De L'Est Cie, Au Liegeur Ets J Pontneau Denis filed Critical Au Liegeur - Ets J Pontneau Denis
Publication of EP2903906A1 publication Critical patent/EP2903906A1/en
Application granted granted Critical
Publication of EP2903906B1 publication Critical patent/EP2903906B1/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
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
    • B65D43/022—Removable lids or covers without integral tamper element secured only by friction or gravity only on the inside, or a part turned to the inside, of the mouth of the container
    • 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
    • B65D51/005—Closures provided with linings or internal coatings so as to avoid contact of the closure with the contents
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00314—Combination, e.g. laminates, several different materials
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00509—Cup
    • 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
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B65D2543/00546—NO contact

Definitions

  • the present invention relates to a composite lid for the closure of wide-mouth containers.
  • the composite cover comprises a cork element associated with an insulation element.
  • Cork corks are used, especially for the corking of wine bottles.
  • the relative sealing of the closure is obtained by forcing a cork, through the bottle neck so as to keep it compressed.
  • corking by means of a cork cover raises some difficulties, especially when they are made of a deformable material compared to glass.
  • the cap, or the lid can not be put in compression through the neck of the container.
  • the cover having a closing part and a gripping part making it possible to engage the closure part inside the neck, it has been imagined to cover the closing portion of an insulating element in plastic material so as to seal it.
  • the contents of the container is completely airtight with respect to the outside when the lid is installed through the opening of the container.
  • cork allows gaseous exchange between the inside of the container and the outside, even if it is compressed in a neck of bottles, and that these gas exchanges are necessary for the conservation and evolution of liquids content. It is the same for all foodstuffs contained in a container. Also, the implementation of a plastic insulating element inhibits any gas exchange.
  • the present invention provides a composite lid for the closure of containers having an opening, said composite lid comprising on the one hand a cork element having a closure portion and a gripping portion allowing engaging said sealing portion through said opening and secondly an insulating insert member covering said sealing portion.
  • said insulated insulation element is made of an artificial material based on cellulosic fibers.
  • a feature of the invention lies in the implementation of an insulation element of artificial material based on cellulosic fibers on the closure part of the cork element.
  • the insulating element of artificial material gives it some relative insulation. Indeed, this insulation material allows gas exchange between the inside of the container and the outside, because it is by nature microporous.
  • this insulation material allows gas exchange between the inside of the container and the outside, because it is by nature microporous.
  • it is easily recyclable with the cork with which it is associated.
  • said closure portion has a closure face and a cylindrical edge bordering said closure face, while said isolation element has, on the one hand, a bottom coming to apply against said sealing face and secondly an extended edge protruding from said bottom coming to bear against said cylindrical edge.
  • the insulation element has a bottom and a flange edge that extends substantially perpendicular to the plane defined by the bottom.
  • the insulation member is preferably secured to the cork member as will be explained in more detail below.
  • said bottom has, advantageously, a groove along said edge so as to stiffen said insulating member.
  • the edge formed between the edge and the bottom of the insulating member is more rigid and the frequency of openings and closures of the container does not damage the cover.
  • the sealing portion and the insulating member which covers it are subjected in their peripheral edge to friction against the inner wall of the opening of the container. It is therefore necessary that their rigidity be increased.
  • said artificial material based on cellulosic fibers has a thickness greater than 150 ⁇ , and preferably greater than 175 ⁇ . In this way, the artificial material is relatively rigid.
  • said artificial material based on cellulosic fibers has a basis weight, or grammage, greater than 200 g / m 2 , preferably greater than 225 g / m 2 , and for example of the order of 420 g. / m 2 .
  • said artificial cellulosic fiber material is uncoated paperboard.
  • said cork member has a shoulder between said sealing portion and said gripping portion. In this way, when the closing portion is engaged through the opening of the container, the shoulder bears against the edge of the opening and thus stops the depression of the lid.
  • the invention proposes a method of producing a composite lid intended for the closure of containers having an opening, said method comprising the following steps: a cork element having a closure part and a part of gripping, said shutter portion having a sealing face and a cylindrical edge bordering said closure face; according to an embodiment, an insulation element having a bottom and an extended edge projecting from said bottom, and said bottom is applied against said sealing face and said edge against said cylindrical edge so as to cover said portion. shutter.
  • said production step comprises the following sub-steps: a sheet of a material is provided artificial based on cellulosic fibers; and, forming said sheet to make said insulation member.
  • the insulation element in situ, for example from the artificial material based on cellulosic fibers in sheets or even in strips.
  • said sheet of said artificial material is hot formed. In this way, the insulation element formed, more easily retains its shape, and in particular, the folding of the edge relative to the bottom.
  • non-coated stamping boards which have soaped faces.
  • a groove is printed along said border when said sheet is formed.
  • the groove is printed during forming or stamping of the sheet. In this way, it comes to stiffen the insulation element along the folded edge. As will be explained below in more detail, this allows a better adjustment of the cork element and the insulation element.
  • FIG. 1 is a schematic axial sectional view of an element of the composite cover according to the invention.
  • FIG. 2 is a schematic bottom view along the arrow II showing the element shown in Figure 1;
  • FIG. 3 is a schematic axial sectional view illustrating the composite cover according to the invention.
  • FIG. 3 illustrates a composite lid 10 according to the invention comprising a cork element 12 and an insulating element 14.
  • the cork element 12 consists of a circular part whose diameter is greater than the thickness, for example between four times and ten times more, and it has a sealing portion 16 surmounted by a gripping portion 18. Both parts 16, 18 are of cylindrical symmetry and they are coaxial.
  • the closure portion 16 has a diameter smaller than the diameter of the gripping portion 18 so as to form a shoulder 20 on the gripping portion 18 around the sealing portion 16.
  • the latter defines a face of shutter 22 substantially flat and circular, and a cylindrical edge 24 whose generator is substantially perpendicular to the sealing face 22.
  • the sealing portion 16 is further covered with an insulating member 26 made of an artificial material based on cellulosic fibers and which will be described in more detail with reference to Figures 1 and 2.
  • Figure 1 illustrates in axial section the insulation member 26 while Figure 2 illustrates in a view from below. It has a substantially flat and circular bottom 28 having an inner face 29 opposite to an outer face 31, and a border 30 substantially perpendicular to the bottom 28, and forming a cylindrical symmetrical rim ending in a free edge 33. From Preferably, the height of the border 30 is between four and ten percent of the diameter of the insulation member 26, for example, it is six percent.
  • the insulating element 26 has, on the inner face 29, a circular peripheral depression 32 forming a groove along the edge 30.
  • this peripheral depression 32 forms, on the outer face 31, a circular rib 34. In this way, the insulation member 26 is stiffened at the edge 30. The advantages of this stiffening will be explained below.
  • the present invention also relates to a method of producing the composite lid 10. According to said method, the cork element is produced.
  • the cork disc 12 by providing cork plates and punching them to the punch to retrieve cork discs inside the punch.
  • the cork discs are then machined so as to protect the sealing part 16 and, at the same time, to disengage the gripping part 12 by forming the shoulder 20.
  • the cork disc has a thickness of
  • the cork element 12 is provided.
  • the insulation element is made from a cardboard material made of cellulosic fibers. This carton has, for example, a thickness of 400 ⁇ and a basis weight of 420 g / m 2 . Preferably, this material is a soaped stamping carton. It is commonly used to make boxes of food products. It is observed that the cellulosic artificial material is here intended, not to contain products, but to cover and isolate the closure portion 16 of the cork element 12.
  • the cardboard material is then precut into substantially circular sheets, which are then hot stamped in a press to be formed.
  • the press has a heated matrix having a circular recess corresponding to the dimensions and external shapes of the insulation element 26, and a punch adapted to stamp the sheets inside the matrix, and whose envelope corresponds to the
  • the die has a bottom wall and a cylindrical wall extending perpendicularly to the bottom wall.
  • a circular groove is formed in the bottom wall along the cylindrical wall.
  • the punch has a projecting circular edge that extends axially and is adapted to engage inside the circular groove of the die.
  • the cellulosic fibers of the cardboard are then broken at the folds.
  • the thus stamped cardboard is then kept inside the heated matrix for a duration of the order of ten seconds, for example 20 seconds.
  • the insulation element 26 is formed as shown in FIGS. 1 and 2.
  • grooves are made in the rim 30 to form vents whose function will be explained in the following description. These grooves are not shown in the figures.
  • it is provided axial grooves in the cylindrical wall of the matrix, while the opposite, the punch has him, axial ribs adapted to engage inside the axial grooves, when the punch penetrates inside the matrix.
  • axial ribs protruding from the rim 30 forming a flange, oriented radially outwards and substantially perpendicular to the bottom 28 of the insulation element 26 are obtained.
  • a plurality of ribs uniformly distributed at the periphery of the insulation member 26, for example, between four and thirty-two ribs.
  • a tape of glue is first applied inside the insulating element 26 against the border 30 and near the free edge 33. Then, the closing portion 16 of the cork element 12 is engaged inside the insulating element 26, the cylindrical edge 24 rubbing against the inside of the edge 30. In this way, the glue of the adhesive tape is driven axially between the edge 30 and the edge cylindrical 24, and so is distributed evenly between these two walls, without outward burr. The free edge 33 of the edge 30 then bears against the shoulder 20, as shown in Figure 3 on which we find the composite cover, and to which reference will be made again.
  • edge 30 is made integral with the cylindrical edge 24 of the closing portion 16 of the cork element 12, while the bottom 28 bears against the closing face 22 of the closure portion 16, while remaining free in relation to this face.
  • the insulation element 26 is then secured to the sealing portion 16 that it covers.
  • FIG. 4 illustrating the implementation of the composite cover 10 on a container 36.
  • the latter is cylindrical in shape and has a container bottom 38 opposite a circular opening 40, which is bordered by a circular inner edge 42, completed by a free edge 44.
  • This circular opening 40 is then closed by means of the composite cover 10.
  • the cylindrical edge 24 of the sealing portion 16 and the edge 30 of the insulating member 26 which covers it, marries the inner border circular 42 of the opening 40 and exert on it a radial force on the entire periphery.
  • the shoulder 20 abuts against the free edge 44. In this way, a certain seal is obtained inside the container 36 vis-à-vis the outside.
  • the insulation element 26 is more rigid, especially at the junction between the edge 30 and the bottom 28. Also, when the sealing portion 16 covered with the element insulation 26 is engaged through the opening 40, its resistance to deformation is greater.
  • the insulating member 26 is liquid-tight, which makes it possible to prevent inadvertent entry of liquids into the container 36 when the latter is closed.
  • the cellulosic fiber-based artificial material 26 is recyclable with the cork element 12, whereas this is not the case with a plastic insulating element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

The invention relates to a composite lid (10) intended for plugging containers (36) having an opening (40), said composite cover comprising (i) a cork element (12) having a plugging portion (16) and a gripping portion (18) that can be used to insert the plugging portion into the opening (40) and (ii) an add-on insulation portion (26) covering the plugging portion (16). The add-on insulation element (26) is made from an artificial material based on cellulose fibres.

Description

Couvercle composite  Composite lid
La présente invention se rapporte à un couvercle composite pour le bouchage des récipients à col large. The present invention relates to a composite lid for the closure of wide-mouth containers.
Plus précisément, le couvercle composite comprend un élément en liège associé à un élément d'isolation.  More specifically, the composite cover comprises a cork element associated with an insulation element.
Les bouchons en liège sont utilisés, notamment pour le bouchage des bouteilles de vin. Toutefois, l'étanchéité relative du bouchage est obtenue en forçant un bouchon en liège, à travers le col des bouteilles de manière à le maintenir comprimé. S'agissant des récipients à plus large col que celui des bouteilles, le bouchage au moyen d'un couvercle en liège soulève quelques difficultés, notamment lorsqu'ils sont réalisés dans un matériau déformable comparé au verre.  Cork corks are used, especially for the corking of wine bottles. However, the relative sealing of the closure is obtained by forcing a cork, through the bottle neck so as to keep it compressed. With regard to containers with a wider neck than that of bottles, corking by means of a cork cover raises some difficulties, especially when they are made of a deformable material compared to glass.
En effet, le bouchon, ou le couvercle, ne peut être mis en compression à travers le col du récipient. Aussi, le couvercle présentant une partie d'obturation et une partie de préhension permettant d'engager la partie d'obturation à l'intérieur du col, il a été imaginé de recouvrir la partie d'obturation d'un élément d'isolation en matière plastique de manière à la rendre étanche. Ainsi, le contenu du récipient est-il totalement étanche vis-à-vis de l'extérieur lorsque le couvercle est installé à travers l'ouverture du récipient.  Indeed, the cap, or the lid, can not be put in compression through the neck of the container. Also, the cover having a closing part and a gripping part making it possible to engage the closure part inside the neck, it has been imagined to cover the closing portion of an insulating element in plastic material so as to seal it. Thus, the contents of the container is completely airtight with respect to the outside when the lid is installed through the opening of the container.
Or, il s'avère que le liège autorise les échanges gazeux entre l'intérieur du récipient et l'extérieur, quand bien même il est comprimé dans un col de bouteilles, et que ces échanges gazeux sont nécessaires pour la conservation et évolution des liquides contenus. Il en est de même pour toutes denrées alimentaires contenues dans un récipient. Aussi, la mise en œuvre d'un élément d'isolation en matière plastique inhibe tout échange gazeux.  However, it turns out that cork allows gaseous exchange between the inside of the container and the outside, even if it is compressed in a neck of bottles, and that these gas exchanges are necessary for the conservation and evolution of liquids content. It is the same for all foodstuffs contained in a container. Also, the implementation of a plastic insulating element inhibits any gas exchange.
En outre, l'association d'un élément en liège et d'un élément d'isolation en matière plastique collés l'un avec l'autre, pose ultérieurement des difficultés de recyclage, compte-tenu de la nature différente des matériaux de ces éléments.  In addition, the combination of a cork element and a plastic insulating element bonded to each other subsequently poses recycling problems, given the different nature of the materials of these materials. elements.
Aussi, un problème qui se pose et que vise à résoudre la présente invention est de fournir un couvercle composite qui soit non seulement plus aisé à recycler mais aussi, qui puisse autoriser les échanges gazeux entre l'intérieur du récipient et l'extérieur. Dans ce but, et selon un premier objet, la présente invention propose un couvercle composite destiné au bouchage des récipients présentant une ouverture, ledit couvercle composite comprenant d'une part un élément en liège présentant une partie d'obturation et une partie de préhension permettant d'engager ladite partie d'obturation à travers ladite ouverture et d'autre part un élément d'isolation rapporté recouvrant ladite partie d'obturation. Selon l'invention, ledit élément d'isolation rapporté est réalisé dans un matériau artificiel à base de fibres cellulosiques. Also, a problem that arises and that aims to solve the present invention is to provide a composite cover which is not only easier to recycle but also, which can allow gas exchange between the interior of the container and the outside. For this purpose, and according to a first object, the present invention provides a composite lid for the closure of containers having an opening, said composite lid comprising on the one hand a cork element having a closure portion and a gripping portion allowing engaging said sealing portion through said opening and secondly an insulating insert member covering said sealing portion. According to the invention, said insulated insulation element is made of an artificial material based on cellulosic fibers.
Ainsi, une caractéristique de l'invention réside dans la mise en œuvre d'un élément d'isolation en matériau artificiel à base de fibres cellulosiques sur la partie d'obturation de l'élément en liège. De la sorte, bien que la partie d'obturation de l'élément en liège ne soit pas comprimée lorsqu'elle est engagée à travers l'ouverture du récipient, l'élément d'isolation en matériau artificiel lui confère une certaine isolation relative. Car en effet, ce matériau d'isolation autorise les échanges gazeux entre l'intérieur du récipient et l'extérieur, car il est par nature microporeux. Au surplus, compte-tenu de sa nature à base de fibres cellulosiques, il est aisément recyclable avec le liège auquel il est associé.  Thus, a feature of the invention lies in the implementation of an insulation element of artificial material based on cellulosic fibers on the closure part of the cork element. In this way, although the closing part of the cork element is not compressed when it is engaged through the opening of the container, the insulating element of artificial material gives it some relative insulation. Indeed, this insulation material allows gas exchange between the inside of the container and the outside, because it is by nature microporous. Moreover, given its nature based on cellulosic fibers, it is easily recyclable with the cork with which it is associated.
Selon un mode de mise en œuvre de l'invention particulièrement avantageux, ladite partie d'obturation présente une face d'obturation et un bord cylindrique bordant ladite face d'obturation, tandis que ledit élément d'isolation présente, d'une part un fond venant s'appliquer contre ladite face d'obturation et d'autre part une bordure étendue en saillie dudit fond venant s'appliquer contre ledit bord cylindrique. Ainsi, l'élément d'isolation présente un fond et une bordure formant rebord qui s'étend sensiblement perpendiculairement au plan défini par le fond. De la sorte, lorsque la partie d'obturation est engagée à travers l'ouverture du récipient, la bordure de l'élément d'isolation est comprimée entre le bord cylindrique de la partie d'obturation et le bord intérieur de l'ouverture du récipient. De la sorte, le fond de l'élément d'isolation et la paroi interne du récipient forment ensemble une seule surface continue étanche vis-à-vis du contenant du récipient. L'élément d'isolation est, de préférence, rendu solidaire de l'élément en liège ainsi qu'on l'expliquera plus en détail ci-après. En outre, ledit fond présente, avantageusement, une rainure longeant ladite bordure de manière à rigidifier ledit élément d'isolation. De la sorte, l'arête formée entre la bordure et le fond de l'élément d'isolation est plus rigide et la fréquence des ouvertures et fermetures du récipient n'endommage pas le couvercle. En effet, la partie d'obturation et l'élément d'isolation qui la recouvre sont soumis, dans leur bord périphérique, à des frottements contre la paroi interne de l'ouverture du récipient. Il est donc nécessaire que leur rigidité soit accrue. According to a particularly advantageous embodiment of the invention, said closure portion has a closure face and a cylindrical edge bordering said closure face, while said isolation element has, on the one hand, a bottom coming to apply against said sealing face and secondly an extended edge protruding from said bottom coming to bear against said cylindrical edge. Thus, the insulation element has a bottom and a flange edge that extends substantially perpendicular to the plane defined by the bottom. In this way, when the closing portion is engaged through the opening of the container, the edge of the insulating member is compressed between the cylindrical edge of the sealing portion and the inner edge of the opening of the container. container. In this way, the bottom of the insulating member and the inner wall of the container together form a single sealed continuous surface vis-à-vis the container of the container. The insulation member is preferably secured to the cork member as will be explained in more detail below. In addition, said bottom has, advantageously, a groove along said edge so as to stiffen said insulating member. In this way, the edge formed between the edge and the bottom of the insulating member is more rigid and the frequency of openings and closures of the container does not damage the cover. Indeed, the sealing portion and the insulating member which covers it are subjected in their peripheral edge to friction against the inner wall of the opening of the container. It is therefore necessary that their rigidity be increased.
Selon un mode de réalisation de l'invention particulièrement avantageux, ledit matériau artificiel à base de fibres cellulosiques présente une épaisseur supérieure à 150 μιτι, et de préférence supérieure 175 μιτι. De la sorte, le matériau artificiel est relativement rigide. Selon une variante de réalisation, ledit matériau artificiel à base de fibres cellulosiques présente une masse surfacique, ou grammage, supérieure à 200 g/m2, préférentiellement, supérieure à 225 g/m2, et par exemple de l'ordre de 420 g/m2. Par exemple, ledit matériau artificiel à base de fibres cellulosiques est un carton non couché. According to a particularly advantageous embodiment of the invention, said artificial material based on cellulosic fibers has a thickness greater than 150 μιτι, and preferably greater than 175 μιτι. In this way, the artificial material is relatively rigid. According to an alternative embodiment, said artificial material based on cellulosic fibers has a basis weight, or grammage, greater than 200 g / m 2 , preferably greater than 225 g / m 2 , and for example of the order of 420 g. / m 2 . For example, said artificial cellulosic fiber material is uncoated paperboard.
De plus, ledit élément en liège présente un épaulement entre ladite partie d'obturation et ladite partie de préhension. De la sorte, lorsque la partie d'obturation est engagée à travers l'ouverture du récipient, l'épaulement vient prendre appui contre le bord de l'ouverture et stoppe ainsi l'enfoncement du couvercle.  In addition, said cork member has a shoulder between said sealing portion and said gripping portion. In this way, when the closing portion is engaged through the opening of the container, the shoulder bears against the edge of the opening and thus stops the depression of the lid.
Selon un second objet, l'invention propose une méthode de réalisation d'un couvercle composite destiné au bouchage des récipients présentant une ouverture, ladite méthode comprenant les étapes suivantes : on fournit un élément en liège présentant une partie d'obturation et une partie de préhension, ladite partie d'obturation présentant une face d'obturation et un bord cylindrique bordant ladite face d'obturation ; on réalise, selon une étape de réalisation, un élément d'isolation présentant un fond et une bordure étendue en saillie dudit fond, et on applique ledit fond contre ladite face d'obturation et ladite bordure contre ledit bord cylindrique de manière à recouvrir ladite partie d'obturation. Selon l'invention, ladite étape de réalisation comprend les sous-étapes suivantes : on fournit une feuille d'un matériau artificiel à base de fibres cellulosiques ; et, on forme ladite feuille pour réaliser ledit élément d'isolation. According to a second object, the invention proposes a method of producing a composite lid intended for the closure of containers having an opening, said method comprising the following steps: a cork element having a closure part and a part of gripping, said shutter portion having a sealing face and a cylindrical edge bordering said closure face; according to an embodiment, an insulation element having a bottom and an extended edge projecting from said bottom, and said bottom is applied against said sealing face and said edge against said cylindrical edge so as to cover said portion. shutter. According to the invention, said production step comprises the following sub-steps: a sheet of a material is provided artificial based on cellulosic fibers; and, forming said sheet to make said insulation member.
Ainsi, il est aisé de réaliser in situ, l'élément d'isolation, par exemple à partir du matériau artificiel à base de fibres cellulosiques en feuilles ou bien encore en bande. En outre, et de préférence, on forme à chaud ladite feuille dudit matériau artificiel. De la sorte, l'élément d'isolation formé, conserve plus aisément sa forme, et en particulier, le rabattement de la bordure par rapport au fond.  Thus, it is easy to produce the insulation element in situ, for example from the artificial material based on cellulosic fibers in sheets or even in strips. In addition, and preferably, said sheet of said artificial material is hot formed. In this way, the insulation element formed, more easily retains its shape, and in particular, the folding of the edge relative to the bottom.
Pour ce faire, on utilise de préférence des cartons à emboutir non- couchés, lesquels présentent des faces savonnées.  To do this, it is preferred to use non-coated stamping boards, which have soaped faces.
Selon un mode de réalisation particulièrement avantageux, on imprime une rainure le long de ladite bordure lorsque l'on forme ladite feuille. De préférence, la rainure est imprimée lors du formage ou de l'emboutissage de la feuille. De la sorte, on vient rigidifier l'élément d'isolation le long de la bordure rabattue. Ainsi qu'on l'expliquera ci-après plus en détail, cela permet un meilleur ajustement de l'élément en liège et de l'élément d'isolation.  According to a particularly advantageous embodiment, a groove is printed along said border when said sheet is formed. Preferably, the groove is printed during forming or stamping of the sheet. In this way, it comes to stiffen the insulation element along the folded edge. As will be explained below in more detail, this allows a better adjustment of the cork element and the insulation element.
D'autres particularités et avantages de l'invention ressortiront à la lecture de la description faite ci-après d'un mode de réalisation particulier de l'invention, donné à titre indicatif mais non limitatif, en référence aux dessins annexés sur lesquels :  Other features and advantages of the invention will emerge on reading the following description of a particular embodiment of the invention, given by way of indication but not limitation, with reference to the accompanying drawings in which:
- la Figure 1 est une vue schématique en coupe axiale d'un élément du couvercle composite selon l'invention ;  - Figure 1 is a schematic axial sectional view of an element of the composite cover according to the invention;
- la Figure 2 est une vue schématique de dessous selon la flèche II montrant l'élément représenté sur la figure 1 ;  - Figure 2 is a schematic bottom view along the arrow II showing the element shown in Figure 1;
- la Figure 3 est une vue schématique en coupe axiale illustrant le couvercle composite conforme à l'invention ; et,  - Figure 3 is a schematic axial sectional view illustrating the composite cover according to the invention; and,
- la Figure 4 et une vue schématique en coupe axiale du couvercle composite associé à un récipient.  - Figure 4 and a schematic axial sectional view of the composite cover associated with a container.
La Figure 3 illustre un couvercle composite 10 conforme à l'invention comprenant un élément en liège 12 et un élément d'isolation 14. L'élément en liège 12 est constitué d'une pièce circulaire dont le diamètre est supérieur à l'épaisseur, par exemple entre quatre fois et dix fois plus, et il présente une partie d'obturation 16 surmontée d'une partie de préhension 18. Les deux parties 16, 18 sont de symétrie cylindrique et elles sont coaxiales. Au surplus, la partie d'obturation 16 présente un diamètre inférieur au diamètre de la partie de préhension 18 de manière à former un épaulement 20 sur la partie de préhension 18 autour de la partie d'obturation 16. Cette dernière définit une face d'obturation 22 sensiblement plane et circulaire, et un bord cylindrique 24 dont la génératrice est sensiblement perpendiculaire à la face d'obturation 22. 3 illustrates a composite lid 10 according to the invention comprising a cork element 12 and an insulating element 14. The cork element 12 consists of a circular part whose diameter is greater than the thickness, for example between four times and ten times more, and it has a sealing portion 16 surmounted by a gripping portion 18. Both parts 16, 18 are of cylindrical symmetry and they are coaxial. In addition, the closure portion 16 has a diameter smaller than the diameter of the gripping portion 18 so as to form a shoulder 20 on the gripping portion 18 around the sealing portion 16. The latter defines a face of shutter 22 substantially flat and circular, and a cylindrical edge 24 whose generator is substantially perpendicular to the sealing face 22.
La partie d'obturation 16 est en outre recouverte d'un élément d'isolation 26 réalisé dans un matériau artificiel à base de fibres cellulosiques et que l'on décrira plus en détail en référence aux figures 1 et 2.  The sealing portion 16 is further covered with an insulating member 26 made of an artificial material based on cellulosic fibers and which will be described in more detail with reference to Figures 1 and 2.
La figure 1 illustre en coupe axiale l'élément d'isolation 26 tandis que la figure 2 l'illustre en vue de dessous. Il présente, un fond 28 sensiblement plat et circulaire présentant une face interne 29 opposée à une face externe 31 , ainsi qu'une bordure 30 sensiblement perpendiculaire au fond 28, et formant un rebord de symétrie cylindrique se terminant par un bord libre 33. De préférence, la hauteur de la bordure 30 est comprise entre quatre et dix pourcents du diamètre de l'élément d'isolation 26, par exemple, elle est de six pourcents.  Figure 1 illustrates in axial section the insulation member 26 while Figure 2 illustrates in a view from below. It has a substantially flat and circular bottom 28 having an inner face 29 opposite to an outer face 31, and a border 30 substantially perpendicular to the bottom 28, and forming a cylindrical symmetrical rim ending in a free edge 33. From Preferably, the height of the border 30 is between four and ten percent of the diameter of the insulation member 26, for example, it is six percent.
En outre, l'élément d'isolation 26 présente, sur la face interne 29, un enfoncement périphérique 32 circulaire formant une rainure le long de la bordure 30. A l'inverse, cet enfoncement périphérique 32 forme, sur la face externe 31 , une nervure circulaire 34. De la sorte, l'élément d'isolation 26 est rigidifié au niveau de la bordure 30. On expliquera ci-après les avantages de cette rigidification.  In addition, the insulating element 26 has, on the inner face 29, a circular peripheral depression 32 forming a groove along the edge 30. On the contrary, this peripheral depression 32 forms, on the outer face 31, a circular rib 34. In this way, the insulation member 26 is stiffened at the edge 30. The advantages of this stiffening will be explained below.
La présente invention concerne également une méthode de réalisation du couvercle composite 10. Suivant ladite méthode, on réalise l'élément en liège The present invention also relates to a method of producing the composite lid 10. According to said method, the cork element is produced.
12 en fournissant des plaques de liège et en les poinçonnant à l'emporte-pièce pour récupérer des disques de liège à l'intérieur du poinçon. Puis on usine les disques de liège de manière à ménager la partie d'obturation 16 et, concomitamment, à dégager la partie de préhension 12 en formant l'épaulement 20. Par exemple, le disque de Liège présente une épaisseur de12 by providing cork plates and punching them to the punch to retrieve cork discs inside the punch. The cork discs are then machined so as to protect the sealing part 16 and, at the same time, to disengage the gripping part 12 by forming the shoulder 20. For example, the cork disc has a thickness of
13 mm et un diamètre de 75 mm, et la partie d'obturation ménagée présente un diamètre de 70 mm et une épaisseur de 6 mm. Aussi, le décrochement entre la partie d'obturation 16 et la partie de préhension 12 est d'environ 2,5 mm. Ainsi, on fournit l'élément de liège 12. En outre, on réalise l'élément d'isolation à partir d'un matériau carton, fait de fibres cellulosiques. Ce carton présente, par exemple, une épaisseur de 400 μιτι et une masse surfacique de 420 g/m2. De préférence, ce matériau est un carton à emboutir savonné. Il est couramment mis en œuvre pour fabriquer des boîtes de produits alimentaires. Il est observé que le matériau artificiel cellulosique est ici destiné, non pas à contenir des produits, mais à recouvrir et isoler la partie d'obturation 16 de l'élément en liège 12. 13 mm and a diameter of 75 mm, and the closed shutter portion has a diameter of 70 mm and a thickness of 6 mm. Also, the recess between the sealing portion 16 and the gripping portion 12 is about 2.5 mm. Thus, the cork element 12 is provided. In addition, the insulation element is made from a cardboard material made of cellulosic fibers. This carton has, for example, a thickness of 400 μιτι and a basis weight of 420 g / m 2 . Preferably, this material is a soaped stamping carton. It is commonly used to make boxes of food products. It is observed that the cellulosic artificial material is here intended, not to contain products, but to cover and isolate the closure portion 16 of the cork element 12.
Le matériau carton est alors prédécoupé en feuilles sensiblement circulaires, lesquelles sont ensuite embouties à chaud dans une presse pour être formées. La presse présente une matrice chauffée présentant un évidement circulaire correspondant aux dimensions et aux formes externes de l'élément d'isolation 26, et un poinçon apte à venir emboutir les feuilles à l'intérieur de la matrice, et dont l'enveloppe correspond aux formes internes de l'élément d'isolation 26. Aussi, la matrice présente une paroi de fond et une paroi cylindrique prolongeant perpendiculairement la paroi de fond. En outre, une rainure circulaire est ménagée dans la paroi de fond le long de la paroi cylindrique. À l'opposé, le poinçon présente un bord circulaire en saillie qui s'étend axialement et qui est apte à venir s'engager à l'intérieur de la rainure circulaire de la matrice.  The cardboard material is then precut into substantially circular sheets, which are then hot stamped in a press to be formed. The press has a heated matrix having a circular recess corresponding to the dimensions and external shapes of the insulation element 26, and a punch adapted to stamp the sheets inside the matrix, and whose envelope corresponds to the Also, the die has a bottom wall and a cylindrical wall extending perpendicularly to the bottom wall. In addition, a circular groove is formed in the bottom wall along the cylindrical wall. In contrast, the punch has a projecting circular edge that extends axially and is adapted to engage inside the circular groove of the die.
Les feuilles de carton, engagées entre le poinçon et la matrice, se déforment lorsque le poinçon vient s'engager à l'intérieur de la matrice, de manière à, d'une part plier les bordures concentriquement puis d'autre part, à former la nervure circulaire 34 lorsque le poinçon est en bout de course à l'intérieur de la matrice. Les fibres cellulosiques du carton sont alors brisées au niveau des pliures.  The sheets of cardboard, engaged between the punch and the die, deform when the punch comes to engage inside the die, so as, firstly to fold the edges concentrically and secondly to form the circular rib 34 when the punch is at the end of the race inside the matrix. The cellulosic fibers of the cardboard are then broken at the folds.
Le carton ainsi embouti est alors maintenu à l'intérieur de la matrice chauffée pendant une durée de l'ordre de la dizaine de secondes, par exemple 20 secondes. De la sorte, on forme l'élément d'isolation 26 tel que représenté sur les figures 1 et 2.  The thus stamped cardboard is then kept inside the heated matrix for a duration of the order of ten seconds, for example 20 seconds. In this way, the insulation element 26 is formed as shown in FIGS. 1 and 2.
Par ailleurs, selon un mode de réalisation de l'invention particulièrement avantageux, on réalise des cannelures dans la bordure 30 pour former des évents dont on expliquera la fonction dans la suite de la description. Ces cannelures ne sont pas représentées sur les figures. Pour réaliser ces cannelures, il est ménagé des rainures axiales dans la paroi cylindrique de la matrice, tandis qu'à l'opposé, le poinçon présente lui, des nervures axiales aptes à venir s'engager à l'intérieur des rainures axiales, lorsque le poinçon pénètre à l'intérieur de la matrice. On obtient de la sorte, des nervures axiales en saillie de la bordure 30 formant rebord, orientées radialement vers l'extérieur et sensiblement perpendiculaires au fond 28 de l'élément d'isolation 26. On prévoit de réaliser une pluralité de nervures uniformément réparties à la périphérie de l'élément d'isolation 26, par exemple, entre quatre et trente-deux nervures. Furthermore, according to a particularly advantageous embodiment of the invention, grooves are made in the rim 30 to form vents whose function will be explained in the following description. These grooves are not shown in the figures. To achieve these grooves, it is provided axial grooves in the cylindrical wall of the matrix, while the opposite, the punch has him, axial ribs adapted to engage inside the axial grooves, when the punch penetrates inside the matrix. In this way, axial ribs protruding from the rim 30 forming a flange, oriented radially outwards and substantially perpendicular to the bottom 28 of the insulation element 26 are obtained. A plurality of ribs uniformly distributed at the periphery of the insulation member 26, for example, between four and thirty-two ribs.
Après que l'élément en liège 12 et l'élément d'isolation 26 ont été réalisés on les assemble par collage.  After the cork element 12 and the insulation element 26 have been made, they are assembled by gluing.
Aussi, un ruban de colle est tout d'abord appliqué à l'intérieur de l'élément d'isolation 26 contre la bordure 30 et près du bord libre 33. Ensuite, la partie d'obturation 16 de l'élément en liège 12 est engagée à l'intérieur de l'élément d'isolation 26, le bord cylindrique 24 en frottement contre l'intérieur de la bordure 30. De la sorte, la colle du ruban de colle est entraînée axialement entre la bordure 30 et le bord cylindrique 24, et ainsi, est répartie uniformément entre ces deux parois, sans bavure vers l'extérieur. Le bord libre 33 de la bordure 30 vient alors en appui contre l'épaulement 20, comme illustré sur la figure 3 sur laquelle on retrouve le couvercle composite, et à laquelle on se référera de nouveau.  Also, a tape of glue is first applied inside the insulating element 26 against the border 30 and near the free edge 33. Then, the closing portion 16 of the cork element 12 is engaged inside the insulating element 26, the cylindrical edge 24 rubbing against the inside of the edge 30. In this way, the glue of the adhesive tape is driven axially between the edge 30 and the edge cylindrical 24, and so is distributed evenly between these two walls, without outward burr. The free edge 33 of the edge 30 then bears against the shoulder 20, as shown in Figure 3 on which we find the composite cover, and to which reference will be made again.
Ainsi, la bordure 30 est rendue solidaire du bord cylindrique 24 de la partie d'obturation 16 de l'élément en liège 12, tandis que le fond 28 vient en appui contre la face d'obturation 22 de la partie d'obturation 16, tout en restant libre par rapport à cette face. L'élément d'isolation 26 est alors solidaire de la partie d'obturation 16 qu'il recouvre.  Thus, the edge 30 is made integral with the cylindrical edge 24 of the closing portion 16 of the cork element 12, while the bottom 28 bears against the closing face 22 of the closure portion 16, while remaining free in relation to this face. The insulation element 26 is then secured to the sealing portion 16 that it covers.
On se référera à la figure 4 illustrant la mise en œuvre du couvercle composite 10 sur un récipient 36. Ce dernier est de forme cylindrique et il présente un fond de récipient 38 opposé à une ouverture circulaire 40, laquelle est bordée par une bordure interne circulaire 42, terminée par un rebord libre 44. Cette ouverture circulaire 40 est alors obturée au moyen du couvercle composite 10. Le bord cylindrique 24 de la partie d'obturation 16 et la bordure 30 de l'élément d'isolation 26 qui le recouvre, épouse alors la bordure interne circulaire 42 de l'ouverture 40 et exercent sur elle un effort radial sur toute la périphérie. Au surplus, l'épaulement 20 vient en appui contre le rebord libre 44. De la sorte, on obtient une certaine étanchéité de l'intérieur du récipient 36 vis- à-vis de l'extérieur. Referring to Figure 4 illustrating the implementation of the composite cover 10 on a container 36. The latter is cylindrical in shape and has a container bottom 38 opposite a circular opening 40, which is bordered by a circular inner edge 42, completed by a free edge 44. This circular opening 40 is then closed by means of the composite cover 10. The cylindrical edge 24 of the sealing portion 16 and the edge 30 of the insulating member 26 which covers it, then marries the inner border circular 42 of the opening 40 and exert on it a radial force on the entire periphery. In addition, the shoulder 20 abuts against the free edge 44. In this way, a certain seal is obtained inside the container 36 vis-à-vis the outside.
On observera que la mise en œuvre des cannelures formant évents, permet de refermer le récipient 36 en évitant de le mettre en surpression. En effet, grâce aux évents, lorsque la partie d'obturation 16 est engagée à travers l'ouverture 40, le surplus d'air du récipient 36 s'échappe à travers les évents.  It will be observed that the implementation of splines forming vents, allows to close the container 36 by avoiding putting it in overpressure. Indeed, thanks to the vents, when the sealing portion 16 is engaged through the opening 40, the excess air of the container 36 escapes through the vents.
De plus, grâce à la nervure circulaire 34, l'élément d'isolation 26 est plus rigide, notamment au niveau de la jonction entre la bordure 30 et le fond 28. Aussi, lorsque la partie d'obturation 16 recouverte de l'élément d'isolation 26 est engagée à travers l'ouverture 40, sa résistance à la déformation est plus importante.  In addition, thanks to the circular rib 34, the insulation element 26 is more rigid, especially at the junction between the edge 30 and the bottom 28. Also, when the sealing portion 16 covered with the element insulation 26 is engaged through the opening 40, its resistance to deformation is greater.
Par ailleurs, grâce à la nature même du matériau artificiel à base de fibres cellulosiques, lequel est microporeux, les échanges gazeux entre l'intérieur du récipient 36 et l'extérieur permettent précisément le renouvellement de l'air du récipient. Cela est particulièrement avantageux lorsque le récipient 36 renferme des denrées alimentaires, par exemple du sel. En outre, l'élément d'isolation 26 est étanche aux liquides, ce qui permet d'éviter toute entrée intempestive de liquides à l'intérieur du récipient 36 lorsque celui-ci est fermé.  Furthermore, thanks to the very nature of the artificial material based on cellulosic fibers, which is microporous, gaseous exchanges between the interior of the container 36 and the outside allow precisely the renewal of the air of the container. This is particularly advantageous when the container 36 contains foodstuffs, for example salt. In addition, the insulating member 26 is liquid-tight, which makes it possible to prevent inadvertent entry of liquids into the container 36 when the latter is closed.
De surcroît, le matériau artificiel à base de fibres cellulosiques 26 est recyclable avec l'élément en liège 12, alors que cela n'est pas le cas avec un élément d'isolation en matière plastique.  In addition, the cellulosic fiber-based artificial material 26 is recyclable with the cork element 12, whereas this is not the case with a plastic insulating element.

Claims

REVENDICATIONS
1 . Couvercle composite (10) destiné au bouchage des récipients (36) présentant une ouverture (40), ledit couvercle composite comprenant d'une part un élément en liège (12) présentant une partie d'obturation (16) et une partie de préhension (18) permettant d'engager ladite partie d'obturation à travers ladite ouverture (40) et d'autre part un élément d'isolation (26) rapporté recouvrant ladite partie d'obturation (16) ; 1. Composite lid (10) for sealing the containers (36) having an opening (40), said composite lid comprising on the one hand a cork element (12) having a sealing portion (16) and a gripping portion ( 18) for engaging said closure portion through said opening (40) and on the other hand an insulating member (26) attached covering said closure portion (16);
caractérisé en ce que ledit élément d'isolation (26) rapporté est réalisé dans un matériau artificiel à base de fibres cellulosiques.  characterized in that said insulating member (26) is made of an artificial material based on cellulosic fibers.
2. Couvercle composite selon la revendication 1 , caractérisé en ce que ladite partie d'obturation (16) présente une face d'obturation (22) et un bord cylindrique (24) bordant ladite face d'obturation, tandis que ledit élément d'isolation (26) présente, d'une part un fond (28) venant s'appliquer contre ladite face d'obturation (22) et d'autre part une bordure (30) étendue en saillie dudit fond (28) venant s'appliquer contre ledit bord cylindrique (24).  Composite cover according to claim 1, characterized in that said closure portion (16) has a closure face (22) and a cylindrical edge (24) bordering said closure face, whereas said closure member insulation (26) has on the one hand a bottom (28) coming to bear against said sealing face (22) and on the other hand an edge (30) extended projecting from said bottom (28) to be applied against said cylindrical edge (24).
3. Couvercle composite selon la revendication 2, caractérisé en ce que ledit fond (28) présente une rainure (32) longeant ladite bordure (30) de manière à rigidifier ledit élément d'isolation (26).  3. Composite cover according to claim 2, characterized in that said bottom (28) has a groove (32) along said border (30) so as to stiffen said insulating member (26).
4. Couvercle composite selon l'une quelconque des revendications 1 à Composite cover according to one of claims 1 to
3, caractérisé en ce que ledit matériau artificiel à base de fibres cellulosiques présente une épaisseur supérieure à 150 μιτι. 3, characterized in that said artificial material based on cellulosic fibers has a thickness greater than 150 μιτι.
5. Couvercle composite selon l'une quelconque des revendications 1 à Composite cover according to one of claims 1 to
4, caractérisé en ce que ledit matériau artificiel à base de fibres cellulosiques présente une masse surfacique supérieure à 200 g/m2. 4, characterized in that said artificial material based on cellulosic fibers has a mass per unit area greater than 200 g / m 2 .
6. Couvercle composite selon la revendication 4 ou 5, caractérisé en ce que ledit matériau artificiel à base de fibres cellulosiques est un carton non couché.  6. A composite cover according to claim 4 or 5, characterized in that said artificial material based on cellulosic fibers is an uncoated cardboard.
7. Couvercle composite selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ledit élément en liège présente un épaulement (20) entre ladite partie d'obturation (16) et ladite partie de préhension (18). A composite cover according to any one of claims 1 to 6, characterized in that said cork member has a shoulder (20) between said sealing portion (16) and said gripping portion (18).
8. Méthode de réalisation d'un couvercle composite (26) destiné au bouchage des récipients (36) présentant une ouverture (40), ladite méthode comprenant les étapes suivantes : 8. A method of making a composite lid (26) for capping containers (36) having an opening (40), said method comprising the steps of:
- on fournit un élément en liège (12) présentant une partie d'obturation (16) et une partie de préhension (18), ladite partie d'obturation présentant une face d'obturation (22) et un bord cylindrique (24) bordant ladite face d'obturation ;  - a cork element (12) having a closure portion (16) and a gripping portion (18) is provided, said closure portion having a closure face (22) and a cylindrical edge (24) bordering said closure face;
- on réalise selon une étape de réalisation un élément d'isolation (26) présentant un fond (28) et une bordure (30) étendue en saillie dudit fond ;  - Is carried out according to an embodiment of an insulation element (26) having a bottom (28) and an edge (30) extended projecting said bottom;
- on applique ledit fond (28) contre ladite face d'obturation (22) et ladite bordure (30) contre ledit bord cylindrique (24) de manière à recouvrir ladite partie d'obturation (16);  said bottom (28) is applied against said closure face (22) and said border (30) against said cylindrical edge (24) so as to cover said closing part (16);
caractérisée en ce que ladite étape de réalisation comprend les sous- étapes suivantes :  characterized in that said performing step comprises the following substeps:
- on fournit une feuille d'un matériau artificiel à base de fibres cellulosiques ; et,  a sheet of an artificial material based on cellulosic fibers is provided; and,
- on forme ladite feuille pour réaliser ledit élément d'isolation (26).  said sheet is formed to produce said insulation member (26).
9. Méthode de réalisation d'un couvercle composite selon la revendication 8, caractérisée en ce qu'on forme à chaud ladite feuille dudit matériau artificiel.  9. A method of making a composite cover according to claim 8, characterized in that hot form said sheet of said artificial material.
10. Méthode de réalisation d'un couvercle composite selon la revendication 8 ou 9, caractérisée en ce qu'on imprime une rainure (32) le long de ladite bordure (30) lorsque l'on forme ladite feuille.  10. A method of making a composite lid according to claim 8 or 9, characterized in that a groove (32) is printed along said border (30) when said sheet is formed.
EP13782796.0A 2012-10-04 2013-10-04 Composite lid Active EP2903906B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1259415A FR2996532B1 (en) 2012-10-04 2012-10-04 COMPOSITE COVER
PCT/FR2013/052360 WO2014053784A1 (en) 2012-10-04 2013-10-04 Composite lid

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EP2903906A1 true EP2903906A1 (en) 2015-08-12
EP2903906B1 EP2903906B1 (en) 2016-09-21

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EP13782796.0A Active EP2903906B1 (en) 2012-10-04 2013-10-04 Composite lid

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EP (1) EP2903906B1 (en)
FR (1) FR2996532B1 (en)
PT (1) PT2903906T (en)
WO (1) WO2014053784A1 (en)

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Publication number Priority date Publication date Assignee Title
CN104276345A (en) * 2014-09-09 2015-01-14 长兴意蜂蜂业科技有限公司 Storage box for containing flower powder
FR3050443B1 (en) 2016-04-20 2019-07-26 Compagnie Des Salins Du Midi Et Des Salines De L'est DEVICE FOR SHUTTING A CONTAINER

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Publication number Priority date Publication date Assignee Title
GB478751A (en) * 1936-09-14 1938-01-25 Ralph Waldo Webster Improvements in closure caps for bottles, jars and like vessels
GB550520A (en) * 1942-05-20 1943-01-12 Ernest Allan Farnell Improvements in lids for use with bottles, jars, containers and the like
FR952072A (en) * 1947-08-14 1949-11-09 Comptoir D Approvisionnement P Closing device for glasses intended to contain mustard or other food products
FR1038953A (en) * 1951-06-22 1953-10-02 Domec & Cie Cap for ice cream boxes and food boxes or the like
FR1100579A (en) * 1954-06-09 1955-09-21 Plug
FR1123043A (en) * 1955-09-14 1956-09-17 Composite stopper more particularly intended for bottles of champagne, sparkling wines, etc.
FR1133724A (en) * 1955-10-18 1957-04-01 New cap
FR2221354A1 (en) * 1973-03-12 1974-10-11 Delaune Jean Bottle stopper with partial circular slot in rim - is opened by pulling wings formed by folding back rim
AUPP989499A0 (en) * 1999-04-22 1999-05-13 Vinpac International Pty Ltd Treated closures 3
IT1308071B1 (en) * 1999-06-01 2001-11-29 Italco S R L PROCEDURE FOR CAPPING BOTTLES AND SIMILAR CONTAINERS, A BARRIER ELEMENT USED IN SUCH PROCEDURE, BOTTLE OR SIMILAR
FR2866634B1 (en) * 2004-02-23 2006-09-22 Au Liegeur Ets J Pontneau Deni COMPOSITE PLUG
FR2882034B1 (en) * 2005-02-16 2009-12-18 Eric Rodius CAPS FOR OBTAINING CONTAINERS HAVING A GENUALLY CIRCULAR, SMALL OPENING WITHOUT MEANS OF HITCHING

Non-Patent Citations (1)

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Title
See references of WO2014053784A1 *

Also Published As

Publication number Publication date
FR2996532B1 (en) 2014-11-14
PT2903906T (en) 2016-12-14
EP2903906B1 (en) 2016-09-21
FR2996532A1 (en) 2014-04-11
WO2014053784A1 (en) 2014-04-10

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