EP0615918A1 - Hermetic closure for containers - Google Patents

Hermetic closure for containers Download PDF

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Publication number
EP0615918A1
EP0615918A1 EP94630014A EP94630014A EP0615918A1 EP 0615918 A1 EP0615918 A1 EP 0615918A1 EP 94630014 A EP94630014 A EP 94630014A EP 94630014 A EP94630014 A EP 94630014A EP 0615918 A1 EP0615918 A1 EP 0615918A1
Authority
EP
European Patent Office
Prior art keywords
neck
capsule
container
end wall
stopper
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
EP94630014A
Other languages
German (de)
French (fr)
Other versions
EP0615918B1 (en
Inventor
Armand Wagner
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.)
Lynes Holdings SA
Original Assignee
Lynes Holdings SA
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 Lynes Holdings SA filed Critical Lynes Holdings SA
Publication of EP0615918A1 publication Critical patent/EP0615918A1/en
Application granted granted Critical
Publication of EP0615918B1 publication Critical patent/EP0615918B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • 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
    • B65D51/22—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure
    • B65D51/221—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being left inside the container after the opening
    • B65D51/222—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being left inside the container after the opening the piercing or cutting means being integral with, or fixedly attached to, the outer closure
    • B65D51/223—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing having means for piercing, cutting, or tearing the inner closure a major part of the inner closure being left inside the container after the opening the piercing or cutting means being integral with, or fixedly attached to, the outer closure the outer closure having to be removed or inverted for piercing or cutting
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0087—Lower closure of the 47-type

Definitions

  • the invention relates to a hermetic closure means for a container, comprising a capsule to be applied to the neck of the container and having a cylindrical skirt extending from one side of an end wall of the capsule, the other side of the terminal wall of the capsule being further provided with means for perforating and cutting a hermetic sealing element applied to the neck of the container and with a circumferential edge extending on the other side of the terminal wall radially to the outside of the perforation and cutting means, the capsule being able to be placed in an inverted position on the neck of the container, with the circumferential edge received around the end of the neck to perforate and cut the hermetic sealing means.
  • the hermetic sealing means of the container comprises an aluminum sheet applied by a heat-sealing process to the end of the container neck. After the container has been heat sealed, the capsule is screwed onto the neck and protects the thin aluminum sheet in order to avoid accidental tearing of the latter. To open the container, the capsule is first unscrewed and it is applied in the inverted position to the neck of the container so that the circumferential edge of the capsule is placed around the upper end of the neck of the container.
  • the capsule is pressed against the neck of the container to perforate the thin aluminum sheet by means of a sharp projection provided on the outer face of the terminal wall of the capsule radially inside the circumferential edge.
  • a sharp projection provided on the outer face of the terminal wall of the capsule radially inside the circumferential edge.
  • the aluminum sheet is then cut by the sharp projection around the inside edge of the neck of the container.
  • the object of the present invention is to provide a closure means which allows the hermetic sealing of a container without resorting to an aluminum foil to be applied by heat sealing to the neck of the container.
  • the hermetic sealing means consists of a plug which is pre-installed inside the capsule and retained by friction therein before the application of the capsule with the plug pre-installed on the neck of the container, this cap having an end wall and a radial flange intended to be placed on the end of the neck of the container, the outside diameter of this radial flange being chosen so that it can be received at the inside the circumferential edge in the inverted position of the capsule, the cap being further provided with a cylindrical skirt extending from the end wall and intended to be pressed into the neck of the container when the capsule with the cap preinstalled is applied to the neck of the container and in order to retain the stopper by friction in the neck of the container when the cap is removed, the radial distance between the axis of the capsule and the outer end of the means for perforating and cutting the plug or the sealing element hermetic being substantially equal to or less than the radius of the inner cylindrical wall of the cap skirt.
  • the plug forming a hermetic sealing element can be perforated and cut by a cutting edge of the capsule by applying the latter in an inverted position on the neck of the container.
  • the end or end wall of the stopper may be provided with a weakening of its thickness to facilitate the perforation and cutting of the stopper in order to open the container.
  • the weakening is an annular weakening extending circumferentially and situated radially inside the inside diameter of the skirt of the plug.
  • the end wall of the stopper can thus be cut along the circumference of the inner cylindrical surface of the stopper.
  • the hermetically sealed container can be directly placed with its neck facing downwards in an apparatus using the contents of the container; the end or end wall of the plug then being perforated by a means of perforating this apparatus.
  • the end wall of the plug is also provided with a central weakening located in the center of the end wall of the plug and several zones attenuation extend radially between the annular attenuation and the central attenuation.
  • the free end of the skirt is provided on the outside with a conical surface the smaller diameter is less than the diameter of the skirt near the end wall of the plug.
  • the friction force holding the stopper in the neck of the container must be significantly greater than the friction force holding the stopper in the capsule so that the stopper pressed into the neck of the container when the capsule is first applied to the neck of the container remains in the neck when the capsule is removed.
  • the end wall of the plug is preferably received in a flat recess in the terminal wall of the capsule, delimited radially by a centering surface.
  • the radial flange of the cap can contact the internal centering surface of the capsule over its entire circumference in order to retain the cap in the capsule before the application of the latter on the neck of the container, but it has been found that it is sufficient to provide small radial protrusions spaced circumferentially around the external diameter of the radial flange. In this case, only these protrusions engage by friction the internal centering wall of the capsule, these protrusions retaining the plug by friction inside the capsule.
  • Figure 1 is a view, half sectional in elevation, of a closure means comprising a capsule with stopper, according to the present invention, applied to the neck of a container.
  • Figure 2 is a sectional representation with the stopper located in the neck of the container and the capsule in the inverted position for perforating and cutting the airtight closure cap.
  • Figure 3 is a top view of the capsule.
  • Figure 4 is a detail of the capsule.
  • Figure 5 is a top view of the plug.
  • the capsule 10 of the closure means has an end or end wall 12.
  • a cylindrical skirt 14 extends from one side of the end wall 12.
  • the skirt is provided with 'a helical thread 16 on its internal surface for screwing the capsule 10 onto the neck 18 of a container 20 which on its side is provided with a helical thread 22 on the external surface of the neck 18.
  • On the other side of the end wall 12 is provided a circumferential edge 30 whose internal diameter is substantially equal to or greater than the external diameter of the neck 18 of the container 20 at its upper end or substantially equal to or greater than the internal diameter of the helical thread 16 of the skirt 14.
  • the diameter inside the circumferential edge is chosen a little larger than the outside diameter of the neck 18 to be able to place the capsule 10 in the inverted position easily on the neck 18 but in order to center the capsule on the neck by the engagement of the internal surface of the circumferential edge and of the external surface of the neck 18.
  • the end wall 12 is provided inside the capsule with a shallow flat recess 32 for receiving the end wall 42 with a hermetic sealing plug 34.
  • the hermetic sealing plug 34 is preinstalled in the recess 32 before the first screwing of the capsule on the neck 18 of the container 20.
  • the cap 34 is retained by friction in the recess 32 by means of a radial flange 36 of the cap whose external diameter is received by friction within a diameter internal centering 38 of the recess 32.
  • the external diameter of the radial flange 32 is chosen so that the flange 32 can be received inside the circumferential edge 30 in the inverted position of the capsule 10; in other words, the external diameter of the flange 32 is substantially equal to or less than the internal diameter of the circumferential edge 30 or of the external surface of the neck 18 at the upper end thereof.
  • the radial flange 36 is placed against the upper end of the neck 18 when the capsule 10 with the cap 34 preinstalled is screwed onto the neck 18 of the container 20.
  • the cap 34 is also provided with a cylindrical skirt 40 extending from one of the sides of the end wall 42 of the plug 34 radially inside the outside diameter of the radial flange 36.
  • the cylindrical skirt 40 is placed in the interior of the neck 18 of the container 20 when the capsule 10 with the pre-installed stopper 34 is screwed for the first time on the neck 18 of the container 20.
  • the external diameter of the skirt 40 is chosen so as to provide a hermetic seal of the container by the stopper 34 pressed into the neck of the latter.
  • the friction force retaining the skirt 40 in the interior of the neck 18 must be higher than the frictional force retaining the stopper 34 including the recess 32 of the capsule 10 so that the stopper remains in the neck 18 of the container 20 when the capsule 10 is unscrewed.
  • the outer surface of the skirt has a reduced outer diameter 44 conically at its free end.
  • the terminal end wall 42 of the plug 34 applied to the neck 18 of the container 20 can be perforated and cut by a perforation and cutting means provided on the same side of the capsule 10 as the circumferential edge 30 but lying radially to the inside the circumferential edge 30.
  • This means for perforating and cutting the end wall 42 of the plug 34 is formed in this embodiment by several, for example three, pointed teeth 46 spaced circumferentially around the axis 26 of the capsule 10. These teeth 46 have a cutting shape, as shown in FIGS. 3 and 4.
  • the height of the circumferential edge 30 is greater than the height of the pointed teeth 46 to protect them and to ensure the centering of the capsule in the inverted position on the neck. 18 of the container 20 before the teeth 46 come into contact with the plug 34 to perforate it.
  • the outer edge 46a of the tooth 46 is spaced from the axis 26 of the capsule by a radial distance substantially equal to or less than the radius of the internal cylindrical surface of the skirt 30 of the plug 34 for perforating and cutting the end wall 42 of the plug 34 along the internal cylindrical surface of the skirt 40 or radially inside the latter.
  • the outer edge 46a of the tooth 46 makes a small acute angle ⁇ 1 with a line parallel to the central axis 26 of the capsule.
  • a larger acute angle is formed between the inner side 46b of tooth 46 and the line parallel to the axis 26 of the capsule.
  • the inner surface of the circumferential edge 30 has a slight inclination (angle ⁇ ) relative to a line parallel to the central axis 26 of the capsule 10.
  • this end wall 42 is provided with a weakening 48 provided in the outer side of the plug and located radially inside the internal cylindrical surface of the skirt 40.
  • the weakening 48 is also shown in FIG. 5. From this figure it follows that the weakening, in several circumferentially spaced locations also has parts 48a extending in the form of a radius inwards towards the zone central 48b with weakened section of the plug, leaving several zones 49, for example four zones, of thickness not weakened between them.
  • the weakening 48 of the end wall 42 occupies the entire surface of the end wall 42 located radially inside the skirt 40 of the plug 34 with the exception of several isolated zones 49 angularly spaced around the axis 26 of the stopper 34. This allows the container 20 to be opened by means of perforation other than the teeth 46 of the capsule 10.
  • the radial flange 36 of the plug 34 has protrusions 50 spaced around its outer circumference. These protrusions 50 are provided for centering the plug 34 in the centering surface 38 of the recess 32 and provide the friction necessary to retain the plug 34 preinstalled in the capsule 10 before its application to the neck 18 of the container 20.

Abstract

A cap (10) for screwing on the neck (18) of a container (20) is provided with a stopper (34) placed inside the cap (10). When the cap (10) equipped with the stopper (34) is screwed on the neck (18) of the container (20) for the first time, the stopper (34) is forced into the neck (18) in order to close it hermetically. The stopper (34) remains in the neck (18) if the cap (10) is removed. In an inverted position, the cap (10) serves for perforating the stopper (34). <IMAGE>

Description

L'invention concerne un moyen de fermeture hermétique pour un récipient, comportant une capsule à appliquer sur le goulot du récipient et ayant une jupe cylindrique s'étendant de l'un des côtés d'une paroi terminale de la capsule, l'autre côté de la paroi terminale de la capsule étant en outre pourvue d'un moyen pour perforer et découper un élément de scellage hermétique appliqué sur le goulot du récipient et d'un bord circonférentiel s'étendant de l'autre côté de la paroi terminale radialement à l'extérieur du moyen de perforation et de découpage, la capsule pouvant être placée en position inversée sur le goulot du récipient, avec le bord circonférentiel reçu autour de l'extrémité du goulot pour perforer et découper le moyen de scellage hermétique.The invention relates to a hermetic closure means for a container, comprising a capsule to be applied to the neck of the container and having a cylindrical skirt extending from one side of an end wall of the capsule, the other side of the terminal wall of the capsule being further provided with means for perforating and cutting a hermetic sealing element applied to the neck of the container and with a circumferential edge extending on the other side of the terminal wall radially to the outside of the perforation and cutting means, the capsule being able to be placed in an inverted position on the neck of the container, with the circumferential edge received around the end of the neck to perforate and cut the hermetic sealing means.

Un tel moyen de fermeture avec une telle capsule est connue dans la technique antérieure et décrite par exemple dans le brevet belge 867503. Selon ce brevet belge le moyen de scellage hermétique du récipient comporte une feuille en aluminium appliquée par un procédé de thermoscellage à l'extrémité du goulot du récipient. Après le thermoscellage du récipient la capsule est vissée sur le goulot et protège la mince feuille en aluminium en vue d'éviter une déchirure accidentelle de celle-ci. Pour ouvrir le récipient la capsule est d'abord dévissée et elle est appliquée en position inversée sur le goulot du récipient de sorte que le bord circonférentiel de la capsule vient se placer autour de l'extrémité supérieure du goulot du récipient. La capsule est pressée contre le goulot du récipient pour perforer la mince feuille en aluminium au moyen d'une projection tranchante prévu sur la face extérieure de la paroi terminale de la capsule radialement à l'intérieur du bord circonférentiel. Par rotation de la capsule en position inversée sur le goulot du récipient la feuille en aluminium est alors découpée par la projection tranchante autour du bord intérieur du goulot du récipient. Le désavantage de cette technique antérieure est dû au procédé de thermoscellage nécessaire pour appliquer la feuille en aluminium au goulot du récipient pour le fermer hermétiquement. Ce procédé de thermoscellage augmente les frais de fabrication et en outre après avoir découpé la feuille en aluminium un anneau d'aluminium reste appliqué au goulot du récipient qui est difficile à enlever et qui ne permet pas le récyclage économique du récipient.Such a closure means with such a capsule is known in the prior art and described for example in Belgian patent 867503. According to this Belgian patent the hermetic sealing means of the container comprises an aluminum sheet applied by a heat-sealing process to the end of the container neck. After the container has been heat sealed, the capsule is screwed onto the neck and protects the thin aluminum sheet in order to avoid accidental tearing of the latter. To open the container, the capsule is first unscrewed and it is applied in the inverted position to the neck of the container so that the circumferential edge of the capsule is placed around the upper end of the neck of the container. The capsule is pressed against the neck of the container to perforate the thin aluminum sheet by means of a sharp projection provided on the outer face of the terminal wall of the capsule radially inside the circumferential edge. By rotation of the capsule in the inverted position on the neck of the container, the aluminum sheet is then cut by the sharp projection around the inside edge of the neck of the container. The disadvantage of this prior art is due to the heat sealing process necessary to apply the aluminum foil to the neck of the container to seal it. This heat sealing process increases the manufacturing costs and further after cutting the aluminum sheet an aluminum ring remains applied to the neck of the container which is difficult to remove and which does not allow economical recycling of the container.

Le but de la présente invention est de fournir un moyen de fermeture qui permet le scellage hermétique d'un récipient sans avoir recours à une feuille en aluminium devant être appliquée par thermoscellage au goulot du récipient.The object of the present invention is to provide a closure means which allows the hermetic sealing of a container without resorting to an aluminum foil to be applied by heat sealing to the neck of the container.

Selon la présente invention, pour réaliser cela, le moyen de scellage hermétique est constitué d'un bouchon qui est préinstallé à l'intérieur de la capsule et retenu par friction dans celle-ci avant l'application de la capsule avec le bouchon préinstallé sur le goulot du récipient, ce bouchon ayant une paroi d'extrémité et une bride radiale destinée à venir se placer sur l'extrémité du goulot du récipient, le diamètre extérieur de cette bride radiale étant choisi de sorte qu'elle puisse être reçue à l'intérieur du bord circonférentiel dans la position inversée de la capsule, le bouchon étant en outre pourvu d'une jupe cylindrique s'étendant de la paroi d'extrémité et destinée à être pressée dans le goulot du récipient lorsque la capsule avec le bouchon préinstallé est appliquée sur le goulot du récipient et en vue de retenir le bouchon par friction dans le goulot du récipient lorsque la capsule est enlevée, la distance radiale entre l'axe de la capsule et l'extrémité extérieure du moyen pour perforer et découper le bouchon ou l'élément de scellage hermétique étant sensiblement égale ou inférieure au rayon de la paroi cylindrique intérieure de la jupe du bouchon.According to the present invention, to achieve this, the hermetic sealing means consists of a plug which is pre-installed inside the capsule and retained by friction therein before the application of the capsule with the plug pre-installed on the neck of the container, this cap having an end wall and a radial flange intended to be placed on the end of the neck of the container, the outside diameter of this radial flange being chosen so that it can be received at the inside the circumferential edge in the inverted position of the capsule, the cap being further provided with a cylindrical skirt extending from the end wall and intended to be pressed into the neck of the container when the capsule with the cap preinstalled is applied to the neck of the container and in order to retain the stopper by friction in the neck of the container when the cap is removed, the radial distance between the axis of the capsule and the outer end of the means for perforating and cutting the plug or the sealing element hermetic being substantially equal to or less than the radius of the inner cylindrical wall of the cap skirt.

Il n'est donc plus nécessaire d'appliquer une feuille en aluminium par thermoscellage au goulot du récipient pour le fermer hermétiquement. Le bouchon préinstallé dans la capsule est pressé dans le goulot du récipient lorsque la capsule est appliquée sur le goulot de celui-ci. De cette façon une fermeture hermétique du récipient est réalisée et lorsque la capsule est enlevée le bouchon est retenu par friction dans le goulot du récipient. Comme dans le brevet belge 867503 le bouchon formant élément de scellage hermétique peut être perforé et découpé par un moyen tranchant de la capsule en appliquant celle-ci en position inversée sur le goulot du récipient. La paroi d'extrémité ou terminale du bouchon peut être munie d'un affaiblissement de son épaisseur pour faciliter la perforation et le découpage du bouchon en vue d'ouvrir le récipient. Selon un mode d'exécution, l'affaiblissement est un affaiblissement annulaire s'étendant circonférentiellement et situé radialement à l'intérieur du diamètre intérieur de la jupe du bouchon. Par rotation du bouchon placé en position inversée sur le goulot du récipient la paroi terminale du bouchon peut ainsi être découpée le long de la circonférence de la surface cylindrique intérieure du bouchon. Au lieu d'utiliser la capsule pour ouvrir le bouchon de scellage hermétique, le récipient scellé hermétiquement peut être directement placé avec son goulot orienté vers le bas dans un appareillage utilisant le contenu du récipient; la paroi terminale ou d'extrémité du bouchon étant alors perforée par un moyen de perforation de cet appareillage. A cet effet, la paroi terminale du bouchon est également pourvue d'un affaiblissement central situé au centre de la paroi d'extrémité du bouchon et plusieurs zones d'affaiblissement s'étendent radialement entre l'affaiblissement annulaire et l'affaiblissement central.It is therefore no longer necessary to apply an aluminum foil by heat sealing the neck of the container to close it hermetically. The cap preinstalled in the capsule is pressed into the neck of the container when the capsule is applied to the neck of the latter. In this way a hermetic closure of the container is achieved and when the capsule is removed the stopper is retained by friction in the neck of the container. As in Belgian patent 867503, the plug forming a hermetic sealing element can be perforated and cut by a cutting edge of the capsule by applying the latter in an inverted position on the neck of the container. The end or end wall of the stopper may be provided with a weakening of its thickness to facilitate the perforation and cutting of the stopper in order to open the container. According to one embodiment, the weakening is an annular weakening extending circumferentially and situated radially inside the inside diameter of the skirt of the plug. By rotation of the stopper placed in the inverted position on the neck of the container, the end wall of the stopper can thus be cut along the circumference of the inner cylindrical surface of the stopper. Instead of using the capsule to open the hermetic sealing cap, the hermetically sealed container can be directly placed with its neck facing downwards in an apparatus using the contents of the container; the end or end wall of the plug then being perforated by a means of perforating this apparatus. For this purpose, the end wall of the plug is also provided with a central weakening located in the center of the end wall of the plug and several zones attenuation extend radially between the annular attenuation and the central attenuation.

Pour faciliter l'enfoncement de la jupe du bouchon dans le goulot du récipient lorsque la capsule avec le bouchon préinstallé est appliquée sur le goulot du récipient, l'extrémité libre de la jupe est munie à l'extérieur d'une surface conique dont le plus petit diamètre est inférieur au diamètre de la jupe à proximité de la paroi terminale du bouchon.To facilitate the insertion of the cap skirt into the neck of the container when the capsule with the preinstalled cap is applied to the neck of the container, the free end of the skirt is provided on the outside with a conical surface the smaller diameter is less than the diameter of the skirt near the end wall of the plug.

La force de friction retenant le bouchon dans le goulot du récipient doit être sensiblement supérieure à la force de friction retenant le bouchon dans la capsule de façon à ce que le bouchon pressé dans le goulot du récipient lors de la première application de capsule sur le goulot du récipient reste dans le goulot lorsque la capsule est enlevée. La paroi d'extrémité du bouchon est reçue de préférence dans un évidement plat de la paroi terminale de capsule, délimité radialement par une surface de centrage. La bride radiale du bouchon peut contacter la surface de centrage interne de la capsule sur toute sa circonférence en vue de retenir le bouchon dans la capsule avant l'application de celle-ci sur le goulot du récipient, mais on a trouvé qu'il suffit de prévoir des petites protubérances radiales espacées circonférentiellement autour du diamètre externe de la bride radiale. Dans ce cas, seulement ces protubérances engagent par friction la paroi de centrage interne de la capsule, ces protubérances retenant le bouchon par friction à l'intérieur de la capsule.The friction force holding the stopper in the neck of the container must be significantly greater than the friction force holding the stopper in the capsule so that the stopper pressed into the neck of the container when the capsule is first applied to the neck of the container remains in the neck when the capsule is removed. The end wall of the plug is preferably received in a flat recess in the terminal wall of the capsule, delimited radially by a centering surface. The radial flange of the cap can contact the internal centering surface of the capsule over its entire circumference in order to retain the cap in the capsule before the application of the latter on the neck of the container, but it has been found that it is sufficient to provide small radial protrusions spaced circumferentially around the external diameter of the radial flange. In this case, only these protrusions engage by friction the internal centering wall of the capsule, these protrusions retaining the plug by friction inside the capsule.

Lorsque le contenu du récipient est épuisé le reste du bouchon perforé ou découpé ne doit pas être enlevé du récipient pour permettre le récyclage de celui-ci.When the contents of the container have been used up, the rest of the perforated or cut cap should not be removed from the container to allow recycling.

Parce que le thermoscellage d'une mince feuille en aluminium sur le goulot du récipient n'est plus nécessaire il ne reste pas un anneau en aluminium thermo-scellé sur l'extrémité du goulot du récipient.Because the heat sealing of a thin aluminum sheet on the neck of the container is no longer necessary there does not remain a heat-sealed aluminum ring on the end of the neck of the container.

Un mode de réalisation de l'invention sera maintenant décrit en plus grand détail en référence aux dessins annexés sur lesquels:An embodiment of the invention will now be described in greater detail with reference to the accompanying drawings in which:

La figure 1 est une vue, moité en coupe moitié en élévation, d'un moyen de fermeture comportant une capsule avec bouchon, selon la présente invention, appliqué sur le goulot d'un récipient.Figure 1 is a view, half sectional in elevation, of a closure means comprising a capsule with stopper, according to the present invention, applied to the neck of a container.

La figure 2 est une représentation en coupe avec le bouchon situé dans le goulot du récipient et la capsule en position inversée pour perforer et découper le bouchon de fermeture hermétique.Figure 2 is a sectional representation with the stopper located in the neck of the container and the capsule in the inverted position for perforating and cutting the airtight closure cap.

La figure 3 est une vue de dessus de la capsule.Figure 3 is a top view of the capsule.

La figure 4 est un détail de la capsule.Figure 4 is a detail of the capsule.

La figure 5 est une vue de dessus du bouchon.Figure 5 is a top view of the plug.

Tel que représenté sur les figures 1 et 2 la capsule 10 du moyen de fermeture a une paroi d'extrémité ou terminale 12. Une jupe cylindrique 14 s'étend de l'un des côtés de la paroi terminale 12. La jupe est pourvue d'un filet hélicoïdal 16 sur sa surface interne pour visser la capsule 10 sur le goulot 18 d'un récipient 20 qui de son côté est munie d'un filet hélicoïdal 22 sur la surface externe du goulot 18. Sur l'autre côté de la paroi terminale 12 est prévu un bord circonférentiel 30 dont le diamètre intérieur est sensiblement égal ou supérieur au diamètre extérieur du goulot 18 du récipient 20 à son extrémité supérieure ou sensiblement égal ou supérieur au diamètre interne du filet hélicoïdal 16 de la jupe 14. Le diamètre intérieur du bord circonférentiel est choisi un peu plus grand que le diamètre extérieur du goulot 18 pour pouvoir placer la capsule 10 en position inversée facilement sur le goulot 18 mais en vue de centrer la capsule sur le goulot par l'engagement de la surface interne du bord circonférentiel et de la surface externe du goulot 18.As shown in Figures 1 and 2 the capsule 10 of the closure means has an end or end wall 12. A cylindrical skirt 14 extends from one side of the end wall 12. The skirt is provided with 'a helical thread 16 on its internal surface for screwing the capsule 10 onto the neck 18 of a container 20 which on its side is provided with a helical thread 22 on the external surface of the neck 18. On the other side of the end wall 12 is provided a circumferential edge 30 whose internal diameter is substantially equal to or greater than the external diameter of the neck 18 of the container 20 at its upper end or substantially equal to or greater than the internal diameter of the helical thread 16 of the skirt 14. The diameter inside the circumferential edge is chosen a little larger than the outside diameter of the neck 18 to be able to place the capsule 10 in the inverted position easily on the neck 18 but in order to center the capsule on the neck by the engagement of the internal surface of the circumferential edge and of the external surface of the neck 18.

La paroi terminale 12 est munie à l'intérieur de la capsule d'un évidement plat 32 de faible profondeur pour recevoir la paroi d'extrémité 42 d'un bouchon de scellage hermétique 34. Le bouchon de scellage hermétique 34 est préinstallé dans l'évidement 32 avant le premier vissage de la capsule sur le goulot 18 du récipient 20. Le bouchon 34 est retenu par friction dans l'évidement 32 au moyen d'une bride radiale 36 du bouchon dont le diamètre externe est reçu par friction dans un diamètre de centrage interne 38 de l'évidement 32. Le diamètre externe de la bride radiale 32 est choisi de sorte que la bride 32 puisse être reçue à l'intérieur du bord circonférentiel 30 dans la position inversée de la capsule 10; en d'autres mots, le diamètre externe de la bride 32 est sensiblement égal ou inférieur au diamètre intérieur du bord circonférentiel 30 ou de la surface externe du goulot 18 à l'extrémité supérieure de celui-ci. La bride radiale 36 vient se placer contre l'extrémité supérieure du goulot 18 lorsque la capsule 10 avec le bouchon 34 préinstallé est vissée sur le goulot 18 du récipient 20. Le bouchon 34 est également muni d'une jupe cylindrique 40 s'étendant de l'un des côtés de la paroi d'extrémité 42 du bouchon 34 radialement à l'intérieur du diamètre extérieur de la bride radiale 36. La jupe cylindrique 40 est placée dans l'intérieur du goulot 18 du récipient 20 lorsque la capsule 10 avec le bouchon préinstallé 34 est vissée pour la première fois sur le goulot 18 du récipient 20. Le diamètre externe de la jupe 40 est choisi de façon à fournir un scellage hermétique du récipient par le bouchon 34 pressé dans le goulot de celui-ci. La force de friction retenant la jupe 40 dans l'intérieur du goulot 18 doit être plus élevée que la force de friction retenant le bouchon 34 dont l'évidement 32 de la capsule 10 de sorte que le bouchon reste dans le goulot 18 du récipient 20 lorsque la capsule 10 est dévissée. Pour faciliter l'enfoncement de la jupe 40 dans l'intérieur du goulot 18 la surface extérieure de la jupe à un diamètre extérieur réduit 44 de façon conique à son extrémité libre.The end wall 12 is provided inside the capsule with a shallow flat recess 32 for receiving the end wall 42 with a hermetic sealing plug 34. The hermetic sealing plug 34 is preinstalled in the recess 32 before the first screwing of the capsule on the neck 18 of the container 20. The cap 34 is retained by friction in the recess 32 by means of a radial flange 36 of the cap whose external diameter is received by friction within a diameter internal centering 38 of the recess 32. The external diameter of the radial flange 32 is chosen so that the flange 32 can be received inside the circumferential edge 30 in the inverted position of the capsule 10; in other words, the external diameter of the flange 32 is substantially equal to or less than the internal diameter of the circumferential edge 30 or of the external surface of the neck 18 at the upper end thereof. The radial flange 36 is placed against the upper end of the neck 18 when the capsule 10 with the cap 34 preinstalled is screwed onto the neck 18 of the container 20. The cap 34 is also provided with a cylindrical skirt 40 extending from one of the sides of the end wall 42 of the plug 34 radially inside the outside diameter of the radial flange 36. The cylindrical skirt 40 is placed in the interior of the neck 18 of the container 20 when the capsule 10 with the pre-installed stopper 34 is screwed for the first time on the neck 18 of the container 20. The external diameter of the skirt 40 is chosen so as to provide a hermetic seal of the container by the stopper 34 pressed into the neck of the latter. The friction force retaining the skirt 40 in the interior of the neck 18 must be higher than the frictional force retaining the stopper 34 including the recess 32 of the capsule 10 so that the stopper remains in the neck 18 of the container 20 when the capsule 10 is unscrewed. To facilitate the insertion of the skirt 40 into the interior of the neck 18, the outer surface of the skirt has a reduced outer diameter 44 conically at its free end.

La paroi d'extrémité terminale 42 du bouchon 34 appliqué au goulot 18 du récipient 20 peut être perforée et découpée par un moyen de perforation et de découpage prévu sur le même côté de la capsule 10 que le bord circonférentiel 30 mais se trouvant radialement à l'intérieur du bord circonférentiel 30. Ce moyen pour perforer et découper la paroi terminale 42 du bouchon 34 est formé dans ce mode de réalisation par plusieurs, par exemple trois, dents pointues 46 espacées circonférentiellement autour de l'axe 26 de la capsule 10. Ces dents 46 ont une forme coupante, tel que représenté sur les figures 3 et 4. La hauteur du bord circonférentiel 30 est supérieure à la hauteur des dents 46 pointues pour les protéger et pour assurer le centrage de la capsule en position inversée sur le goulot 18 du récipient 20 avant que les dents 46 viennent en contact avec le bouchon 34 pour le perforer. L'arête extérieure 46a de la dent 46 est espacée de l'axe 26 de la capsule d'une distance radiale sensiblement égale à ou inférieure au rayon de la surface cylindrique interne de la jupe 30 du bouchon 34 pour perforer et découper la paroi terminale 42 du bouchon 34 le long de la surface cylindrique interne de la jupe 40 ou radialement à l'intérieur de celle-ci. Tel que représenté sur le détail de la figure 4 l'arête externe 46a de la dent 46 fait un petit angle aigu α₁ avec une ligne parallèle à l'axe centrale 26 de la capsule. Un plus grand angle aigu est formé entre le côté intérieur 46b de la dent 46 et la ligne parallèle à l'axe 26 de la capsule. La surface intérieure du bord circonférentiel 30 a une faible inclinaison (angle β) par rapport à une ligne parallèle à l'axe centrale 26 de la capsule 10. Cela fournit un évasement vers l'extérieur de l'écartement mesuré entre le bord circonférentiel 30 et l'arête externe 46a de la dent 46 en vue de faciliter l'application de la capsule 10 en position inversée sur le goulot du récipient et la perforation initiale de la paroi d'extrémité 42 du bouchon 34.The terminal end wall 42 of the plug 34 applied to the neck 18 of the container 20 can be perforated and cut by a perforation and cutting means provided on the same side of the capsule 10 as the circumferential edge 30 but lying radially to the inside the circumferential edge 30. This means for perforating and cutting the end wall 42 of the plug 34 is formed in this embodiment by several, for example three, pointed teeth 46 spaced circumferentially around the axis 26 of the capsule 10. These teeth 46 have a cutting shape, as shown in FIGS. 3 and 4. The height of the circumferential edge 30 is greater than the height of the pointed teeth 46 to protect them and to ensure the centering of the capsule in the inverted position on the neck. 18 of the container 20 before the teeth 46 come into contact with the plug 34 to perforate it. The outer edge 46a of the tooth 46 is spaced from the axis 26 of the capsule by a radial distance substantially equal to or less than the radius of the internal cylindrical surface of the skirt 30 of the plug 34 for perforating and cutting the end wall 42 of the plug 34 along the internal cylindrical surface of the skirt 40 or radially inside the latter. As shown in the detail in Figure 4 the outer edge 46a of the tooth 46 makes a small acute angle α₁ with a line parallel to the central axis 26 of the capsule. A larger acute angle is formed between the inner side 46b of tooth 46 and the line parallel to the axis 26 of the capsule. The inner surface of the circumferential edge 30 has a slight inclination (angle β) relative to a line parallel to the central axis 26 of the capsule 10. This provides a widening towards the outside of the distance measured between the circumferential edge 30 and the external edge 46a of the tooth 46 in order to facilitate the application of the capsule 10 in the inverted position on the neck of the container and the initial perforation of the end wall 42 of the stopper 34.

Pour faciliter d'avantage la perforation et le découpage de la paroi terminale 42 du bouchon 40, cette paroi terminale 42 est munie d'un affaiblissement 48 prévu dans le côté extérieur du bouchon et situé radialement à l'intérieur de la surface cylindrique interne de la jupe 40. L'affaiblissement 48 est également représenté sur la figure 5. De cette figure il résulte que l'affaiblissement, en plusieurs endroits espacés circonférentiellement a également des parties 48a s'étendant en forme de rayon vers l'intérieur vers la zone centrale 48b à section affaiblie du bouchon en laissant plusieurs zones 49, par exemple quatre zones, à épaisseur non affaiblie entre elles. En autres mots, l'affaiblissement 48 de la paroi d'extrémité 42 occupe toute la surface de la paroi d'extrémité 42 située radialement à l'intérieur de la jupe 40 du bouchon 34 à l'exception de plusieurs zones isolées 49 espacées angulairement autour de l'axe 26 du bouchon 34. Cela permet l'ouverture du récipient 20 par des moyens de perforation autres que les dents 46 de la capsule 10.To further facilitate the perforation and cutting of the end wall 42 of the plug 40, this end wall 42 is provided with a weakening 48 provided in the outer side of the plug and located radially inside the internal cylindrical surface of the skirt 40. The weakening 48 is also shown in FIG. 5. From this figure it follows that the weakening, in several circumferentially spaced locations also has parts 48a extending in the form of a radius inwards towards the zone central 48b with weakened section of the plug, leaving several zones 49, for example four zones, of thickness not weakened between them. In other words, the weakening 48 of the end wall 42 occupies the entire surface of the end wall 42 located radially inside the skirt 40 of the plug 34 with the exception of several isolated zones 49 angularly spaced around the axis 26 of the stopper 34. This allows the container 20 to be opened by means of perforation other than the teeth 46 of the capsule 10.

Tel que représenté également sur la figure 5 la bride radiale 36 du bouchon 34 comporte des protubérances 50 espacées autour de sa circonférence externe. Ces protubérances 50 sont prévues pour centrer le bouchon 34 dans la surface de centrage 38 de l'évidement 32 et fournissent la friction nécessaire pour retenir le bouchon 34 préinstallé dans la capsule 10 avant son application sur le goulot 18 du récipient 20.As also shown in Figure 5 the radial flange 36 of the plug 34 has protrusions 50 spaced around its outer circumference. These protrusions 50 are provided for centering the plug 34 in the centering surface 38 of the recess 32 and provide the friction necessary to retain the plug 34 preinstalled in the capsule 10 before its application to the neck 18 of the container 20.

Claims (8)

Moyen de fermeture hermétique pour un récipient, comportant une capsule à appliquer sur le goulot du récipient et ayant une jupe cylindrique s'étendant de l'un des côtés d'une paroi terminale de la capsule, l'autre côté de la paroi terminale de la capsule étant en outre pourvue d'un moyen pour perforer et découper un élément de scellage hermétique appliqué sur le goulot du récipient et d'un bord circonférentiel s'étendant de l'autre côté de la paroi terminale radialement à l'extérieur du moyen de perforation et de découpage, la capsule pouvant être placée en position inversée sur le goulot du récipient, avec le bord circonférentiel reçu autour de l'extrémité du goulot pour perforer et découper le moyen de scellage hermétique, caractérisé en ce que le moyen de scellage hermétique est constitué d'un bouchon qui est préinstallé à l'intérieur de la capsule et retenu par friction dans celle-ci avant l'application de la capsule avec le bouchon préinstallé sur le goulot du récipient, ce bouchon ayant une paroi d'extrémité et une bride radiale destinée à venir se placer sur l'extrémité du goulot du récipient, le diamètre extérieur de cette bride radiale étant choisi de sorte qu'elle puisse être reçue à l'intérieur du bord circonférentiel dans la position inversée de la capsule, le bouchon étant en outre pourvu d'une jupe cylindrique s'étendant de la paroi d'extrémité et destinée à être pressée dans le goulot du récipient lorsque la capsule avec le bouchon préinstallé est appliquée sur le goulot du récipient et en vue de retenir le bouchon par friction dans le goulot de la bouteille lorsque la capsule est enlevée, la distance radiale entre l'axe de la capsule et l'extrémité extérieure du moyen pour perforer et découper le bouchon ou l'élément de scellage hermétique étant sensiblement égale ou inférieure au rayon de la paroi cylindrique intérieure de la jupe du bouchon.Hermetic closure means for a container, comprising a capsule to be applied to the neck of the container and having a cylindrical skirt extending from one side of an end wall of the capsule, the other side of the end wall of the capsule being further provided with means for perforating and cutting a hermetic sealing element applied to the neck of the container and with a circumferential edge extending on the other side of the end wall radially outside the means perforation and cutting, the capsule can be placed in the inverted position on the neck of the container, with the circumferential edge received around the end of the neck to perforate and cut the hermetic sealing means, characterized in that the sealing means hermetic consists of a plug which is pre-installed inside the capsule and retained by friction in it before applying the capsule with the preins plug fitted on the neck of the container, this cap having an end wall and a radial flange intended to be placed on the end of the neck of the container, the outside diameter of this radial flange being chosen so that it can be received inside the circumferential edge in the inverted position of the capsule, the cap being further provided with a cylindrical skirt extending from the end wall and intended to be pressed into the neck of the container when the capsule with the pre-installed stopper is applied to the neck of the container and in order to retain the stopper by friction in the neck of the bottle when the cap is removed, the radial distance between the axis of the cap and the outer end of the means for perforating and cut out the cap or hermetic sealing element being substantially equal to or less than the radius of the inner cylindrical wall of the skirt of the plug. Moyen de fermeture selon la revendication 1, caractérisé en ce que la paroi d'extrémité du bouchon est munie d'un affaiblissement de son épaisseur pour faciliter la perforation et le découpage du bouchon en vue d'ouvrir le récipient.Closure means according to claim 1, characterized in that the end wall of the stopper is provided with a weakening of its thickness to facilitate the perforation and cutting of the stopper in order to open the container. Moyen de fermeture selon la revendication 2, caractérisé en ce que l'affaiblissement est un affaiblissement annulaire s'étendant circonférentiellement et situé radialement à l'intérieur du diamètre interne de la jupe du bouchon.Closure means according to claim 2, characterized in that the weakening is an annular weakening extending circumferentially and situated radially inside the internal diameter of the skirt of the stopper. Moyen de fermeture selon la revendication 3, caractérisé en ce que l'affaiblissement comporte aussi un affaiblissement central situé au centre de la paroi d'extrémité du bouchon et plusieurs zones d'affaiblissement s'étendent radialement entre l'affaiblissement annulaire et l'affaiblissement central.Closure means according to claim 3, characterized in that the weakening also comprises a central weakening situated in the center of the end wall of the stopper and several weakening zones extend radially between the annular weakening and the weakening central. Moyen de fermeture selon la revendication 2, caractérisé en ce que l'affaiblissement de la paroi d'extrémité occupe toute la surface de la paroi d'extrémité située radialement à l'intérieur de la jupe du bouchon à l'exception de plusieurs zones isolées espacées angulairement autour de l'axe du bouchon.Closure means according to claim 2, characterized in that the weakening of the end wall occupies the entire surface of the end wall located radially inside the skirt of the cap with the exception of several isolated zones angularly spaced around the axis of the plug. Moyen de fermeture selon la revendication 1, caractérisé en ce que l'extrémité libre de la jupe est munie à l'extérieur d'une surface conique dont le plus petit diamètre est inférieur au diamètre de la jupe à proximité de la paroi d'extrémité du bouchon.Closure means according to claim 1, characterized in that the free end of the skirt is provided on the outside with a conical surface the smallest diameter of which is less than the diameter of the skirt near the end wall of the plug. Moyen de fermeture selon la revendication 1, caractérisé en ce que la bride radiale du bouchon a plusieurs protubérances radiales espacées circonférentiellement autour du diamètre externe de la bride radiale et s'adaptant par friction dans une surface de centrage de la capsule.Closure means according to claim 1, characterized in that the radial flange of the stopper has several radial protuberances spaced circumferentially around the external diameter of the radial flange and adapting by friction in a centering surface of the capsule. Moyen de fermeture selon la revendication 1, caractérisé en ce que la paroi d'extrémité du bouchon est reçue dans un évidement plat de la paroi terminale de la capsule, délimité radialement par une surface de centrage.Closure means according to claim 1, characterized in that the end wall of the stopper is received in a flat recess of the end wall of the capsule, delimited radially by a centering surface.
EP94630014A 1993-03-15 1994-03-10 Hermetic closure for containers Expired - Lifetime EP0615918B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU88233A LU88233A1 (en) 1993-03-15 1993-03-15 HERMETIC CLOSURE FOR CONTAINER
LU88233 1993-03-15

Publications (2)

Publication Number Publication Date
EP0615918A1 true EP0615918A1 (en) 1994-09-21
EP0615918B1 EP0615918B1 (en) 1997-07-02

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ID=19731392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94630014A Expired - Lifetime EP0615918B1 (en) 1993-03-15 1994-03-10 Hermetic closure for containers

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EP (1) EP0615918B1 (en)
AT (1) ATE154916T1 (en)
DE (1) DE69403979D1 (en)
LU (1) LU88233A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027723A1 (en) * 1998-11-09 2000-05-18 Abbott Laboratories Closure device for a membrane sealed container

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE867503A (en) * 1978-05-26 1978-11-27 Calwag Finance S A S A Holgin SCREW CAP
GB2022547A (en) * 1978-06-09 1979-12-19 Minmetal Srl Flexible tube
DE8803816U1 (en) * 1988-03-21 1988-05-05 Alcan Deutschland Gmbh, 3400 Goettingen, De
EP0355471A1 (en) * 1988-08-18 1990-02-28 Greiter Ag Tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE867503A (en) * 1978-05-26 1978-11-27 Calwag Finance S A S A Holgin SCREW CAP
GB2022547A (en) * 1978-06-09 1979-12-19 Minmetal Srl Flexible tube
DE8803816U1 (en) * 1988-03-21 1988-05-05 Alcan Deutschland Gmbh, 3400 Goettingen, De
EP0355471A1 (en) * 1988-08-18 1990-02-28 Greiter Ag Tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027723A1 (en) * 1998-11-09 2000-05-18 Abbott Laboratories Closure device for a membrane sealed container

Also Published As

Publication number Publication date
LU88233A1 (en) 1994-03-01
ATE154916T1 (en) 1997-07-15
EP0615918B1 (en) 1997-07-02
DE69403979D1 (en) 1997-08-07

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