WO2008012426A2 - Threaded cap with increased sealing and container provided with such a cap - Google Patents

Threaded cap with increased sealing and container provided with such a cap Download PDF

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Publication number
WO2008012426A2
WO2008012426A2 PCT/FR2007/001269 FR2007001269W WO2008012426A2 WO 2008012426 A2 WO2008012426 A2 WO 2008012426A2 FR 2007001269 W FR2007001269 W FR 2007001269W WO 2008012426 A2 WO2008012426 A2 WO 2008012426A2
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WO
WIPO (PCT)
Prior art keywords
container
flange
neck
lip
skirt
Prior art date
Application number
PCT/FR2007/001269
Other languages
French (fr)
Other versions
WO2008012426A3 (en
Inventor
Philippe Nusbaum
Original Assignee
Bericap
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 Bericap filed Critical Bericap
Publication of WO2008012426A2 publication Critical patent/WO2008012426A2/en
Publication of WO2008012426A3 publication Critical patent/WO2008012426A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/0442—Collars or rings

Definitions

  • the invention relates to a threaded cap and a container provided with such a plug.
  • a threaded bottle cap is described, the transverse wall of which is provided with two annular sealing lips which grip the rim of the neck of a bottle on either side.
  • the stopper is screwed onto an external thread of the neck of the bottle and comprises a breakable tamperproof band provided with hooking projections directed towards the axis of the stopper and cooperating with a collar of the neck of the bottle, located below the thread.
  • the invention aims to overcome the drawbacks of the state of the art, and in particular to slow down the penetration of microorganisms in the container by the cap, taking advantage of the reliefs available on the neck of the bottle.
  • the object of the invention is, according to a first aspect, a closure cap for a threaded neck of a container, the neck being provided with an end flange, with a flange projecting radially towards the end of the container.
  • the cap having a skirt provided with an internal thread for cooperating with the external thread of the neck; a transverse end wall closing the skirt and provided with at least a first annular sealing lip to cooperate with the neck of the container; and a tamper-evident strip connected to the skirt by means of a breakable connection means such that in a closed position of the stopper, the flange is located axially between the tamper-evident band and the internal thread of the cap. skirt.
  • the skirt is further provided with an additional annular lip disposed axially between the internal thread of the skirt and the strip, projecting radially inwards and axially towards the tamper-evident band, the additional lip being intended to bear elastic against the collar.
  • the additional annular lip coming in elastic support against the collar, is a barrier or a filter slowing the rise of microorganism between the threads of the plug.
  • the flange may have a surface condition that is not conducive to a good seal, especially when the container has an axial joint plane, this additional lip, in combination with the existing lip or lips, provides an additional barrier which delays the contamination of the upper neck of the bottle.
  • the first lip is arranged to provide contact with an inner wall of the neck of the container and may include an annular bulge projecting radially outwardly to provide contact with the inner wall of the neck of the container.
  • This type of lip called “olive” in the jargon of the trade, is particularly effective in terms of sealing.
  • the transverse wall is provided with a second annular sealing lip, arranged radially outside the first sealing lip, to ensure contact with an outer wall of the container neck or the rim. the neck of the container.
  • This second lip offers the advantage of only contacting the neck of the bottle late, so that it does not significantly increase the closing torque.
  • an annular seal is disposed between the first lip and the second lip, which further increases the seal, without significantly increasing the clamping force.
  • the first sealing lip is arranged to provide contact with an outer wall of the container neck or the rim of the container neck.
  • the tamper-evident band is provided with hooking projections extending axially towards the transverse wall and intended to bear against a lower face of the collar.
  • the tamper-evident band is a closed ring.
  • the connecting means of the tamper-evident band consists of breakable bridges separated from each other by incisions made with a cut by blade.
  • the subject of the invention is a container comprising, on the one hand, a threaded neck provided with an end flange, at least one flange projecting radially outwardly, and an external thread located between the flange and the collar, and secondly a plug, which comprises: a skirt provided with an internal thread cooperating with the external thread of the container; a transverse end wall closing the skirt and provided with at least a first annular sealing lip cooperating with the neck of the container; and a tamper-evident strip connected to the skirt by means of at least one breakable connecting means such that the flange is located axially between the strip and the internal thread of the skirt.
  • the skirt is further provided with an additional annular lip arranged axially between the internal thread of the skirt and the strip, projecting radially inwards and axially towards the tamper-evident band, the additional lip being in elastic support against the collar.
  • the additional lip is in elastic support against an upper face of the flange facing the threads and flaring towards the band.
  • the upper face may be frustoconical.
  • the orientation of the upper face of the collar on which the additional lip rests is conducive to good radial and axial support.
  • this shape allows non-destructive passage of the tamper band during the first screwing of the plug.
  • the tamper-evident band is provided with hooking projections bearing against a bottom wall of the neck turned towards the tamper-evident band.
  • the bottom wall may be flat. The orientation of the underside allows a good snap.
  • the additional lip and the hooking projections are dimensioned such that during screwing of the plug, the additional lip comes into contact with the collar before the hooking projections abut against the bottom wall.
  • the bottom wall is constituted by a lower face of the flange.
  • the neck is made of molded plastic.
  • the raw material is polyethylene terephthalate (PET) injected in the form of a preform,.
  • PET polyethylene terephthalate
  • the preform is heated, stretched and then blown into a mold.
  • the shape of the bottle depends on the shape of the mold used.
  • the mold is generally in three parts, two of which form the body of the container, including the collar, and a third forms the upper part of the neck.
  • a threaded neck 10 of a container for example a neck of a bottle containing mineral water, a juice or a carbonated beverage, is closed by a stopper 12.
  • a stopper 12 By convention, it will be considered in the following the description that the axis 14 of screwing the neck of the container is oriented vertically, and that the container opens upwards.
  • the neck 10 has an end flange 16 separating an inner cylindrical face 18 facing the axis 14 of an outer face 20.
  • the outer face is provided with a thread 22 and a flange 24 projecting radially towards the outside.
  • the flange has a frustoconical upper surface 26 on the threaded side 22 and a flat bottom face 28 on the side of the container body.
  • the neck 10 may for example be a standardized neck, and in particular a neck of 25 mm inner diameter and outer diameter with a net of close to 28 mm.
  • the plug 12 is molded from a piece of plastic material and has a cylindrical skirt 30 closed by a transverse disc-end wall 32 and extended towards its free end 33 by a tamper-evident band 34.
  • the skirt comprises, on its outer face, grooves or other reliefs to facilitate handling during screwing or unscrewing of the cap.
  • the inner face 38 of the skirt is provided with an internal thread 40 cooperating with the external thread 22 of the neck.
  • the tamper-evident band 34 is connected to the free end 33 of the skirt by bridges breakable 41 and has hooking projections 42 which extend radially inwardly and axially upwardly, and abut axially against the flat bottom wall 28 of the collar.
  • the cap comprises sealing means arranged to cooperate with the neck of the container.
  • These means comprise a so-called inner annular flexible annular sealing lip 44 projecting axially from the transverse wall 32 in the same direction as the lateral skirt and provided with an end flange 45 projecting radially outwards and coming from in elastic support against the inner face 18 of the neck of the bottle.
  • the sealing means also comprise a so-called outer annular flexible sealing lip 46 projecting from the transverse wall axially in the same direction as the lateral skirt and cooperating with the upper flange 16 and / or the external face 20 of the neck, at the
  • the sealing means further comprise a third flexible annular lip 50, referred to below as the two lips 44 and 48 which will be said to be jointly upper, the lower lip 50 being located axially between the base the thread 40 of the skirt and the upper part of the tamper-evident band 34, and protruding from the inner wall 38 of the skirt axially downwards and radially inwards, so as to bear against the frustoconical upper face 26 of the collar.
  • the cap may comprise a fourth sealing means, constituted by an annular seal 52 covering the portion of the transverse wall 32 situated between the inner lip 44 and the outer lip 46, and which bears on the upper rim 16 of the neck of the bottle.
  • This seal preferably in elastomer Thermoplastic (TPE), can be applied either a posteriori on joining machine, or bi-injected with the cap.
  • the plug 12 is initially mounted on the neck 10 of the container by screwing, the tamper band gradually expanding during screwing to the passage of the frustoconical upper wall of the flange, then coming into the final position illustrated in the figure when screwing is continued.
  • the tamper band gradually expanding during screwing to the passage of the frustoconical upper wall of the flange, then coming into the final position illustrated in the figure when screwing is continued.
  • the elastomeric seal located between the two lips has no significant effect on the opening torque.
  • the lower lip in contact with the frustoconical face of the flange and provides an additional barrier to pollutants and microorganisms from outside.
  • the frustoconical wall of the flange generally comprises a burr corresponding to the joint plane of the container, while the upper part of the neck, above the thread, is free of joint plane.
  • This difference in surface condition has the consequence that the seal obtained thanks to the lower lip is of lower quality than that obtained thanks to the upper lips.
  • the lower lip is flexible so that it exerts only a slight pressure on the collar. For these reasons, the lower lip can not replace the upper lips. So we get with the lower lip not a perfect seal, but more simply a filter or an additional barrier to microorganisms.
  • the elastomeric seal is optional and can be omitted.
  • one of the two upper lips may be omitted, either the inner lip or the outer lip.
  • the invention generally relates to any type of threaded neck container, plastic or glass.
  • the flange supporting the additional sealing lip may be distinct from the flange for retaining the hooks of the tamper-evident band.
  • the tamper-evident band may be of any known form, for example a closed ring or an open band provided with a tear-off tab.

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

Abstract

A container comprises a threaded neck (10) having an end rim (16), at least one flange (24) projecting radially outward and an external threading (22) located between the rim (16) and the flange (24), as well as a cap (12) comprising: a threaded skirt (30) closed by a transverse wall (32), and a tear band (34) connected to the skirt (30) by means of at least one breakable connection (41) and located beneath the flange. The transverse wall (32) is provided with one or two annular seal lips (44, 46) cooperating with the neck of the container. The skirt is further provided with an additional annular lip (5) disposed axially between the threading (40) of the skirt and the band (34), and pressing elastically against the flange (24).

Description

BOUCHON FILETE A ETANCHEITE RENFORCEE ET RECIPIENT REINFORCED SEAL WITH CAP AND CONTAINER
POURVU D'UN TEL BOUCHONPROVIDED WITH SUCH A PLUG
DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION
L'invention a trait à un bouchon fileté ainsi qu'à un récipient pourvu d'un tel bouchon.The invention relates to a threaded cap and a container provided with such a plug.
ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART
Dans le document WO 98/35881 est décrit un bouchon fileté de bouteille dont la paroi transversale est pourvue de deux lèvres d'étanchéité annulaires qui viennent pincer de part et d'autre le rebord du col d'une bouteille. Le bouchon vient se visser sur un filetage extérieur du col de la bouteille et comporte une bande d'inviolabilité sécable munie de saillies d'accrochage dirigées vers l'axe du bouchon et coopérant avec une collerette du col de la bouteille, située en dessous du filetage. Bien que l'étanchéité de ce bouchon donne entière satisfaction, on constate malgré tout dans certaines circonstances, notamment lorsque les durées de stockage sont longues, une pénétration de micro-organismes jusque dans la partie supérieure du bouchon, voire à l'intérieur de la bouteille. Ces micro-organismes peuvent pénétrer soit par les interstices situés entre les pontets sécables de la bande d'inviolabilité, soit par l'extrémité inférieure de la bande sécable, et progressent en profitant des espaces entre filets du col et du bouchon.In the document WO 98/35881 a threaded bottle cap is described, the transverse wall of which is provided with two annular sealing lips which grip the rim of the neck of a bottle on either side. The stopper is screwed onto an external thread of the neck of the bottle and comprises a breakable tamperproof band provided with hooking projections directed towards the axis of the stopper and cooperating with a collar of the neck of the bottle, located below the thread. Although the sealing of this plug is entirely satisfactory, despite certain circumstances, in particular, especially when storage times are long, there is a penetration of micro-organisms into the upper part of the plug, or even inside the bottle. These microorganisms can penetrate either through the interstices between the breakable bridges of the tamper-evident band, or by the lower end of the breakable band, and progress by taking advantage of the spaces between the threads of the neck and the stopper.
Dans le document US 6 041 953 est décrit un bouchon fileté pour un récipient, dont la jupe vient en appui axial sur une collerette du col du récipient. Cet appui a une fonction d'étanchéité. De manière similaire est décrit dans le document US 3 741 424 un bouchon réalisant également une étanchéité par appui axial de l'extrémité de la jupe du bouchon sur un épaulement d'une collerette du col de la bouteille. Toutefois, des tels appuis axiaux ne conviennent pas aux bouchons du type à bande d'inviolabilité. De plus, l'étanchéité d'un tel bouchon dépend du couple de serrage appliqué par la machine de capsulage, de sorte qu'une bonne étanchéité implique nécessairement un couple d'ouverture élevé, donc une difficulté pour l'utilisateur.In US 6,041,953 is described a threaded cap for a container, the skirt bears axially on a flange of the neck of the container. This support has a sealing function. Similarly, a plug is also described in document US Pat. No. 3,741,424, which also provides a seal by axially pressing the end of the cap skirt on a shoulder of a neck collar of the bottle. However, such axial bearings are not suitable for plugs of the tamper-evident type. In addition, the sealing of such a plug depends on the tightening torque applied by the capping machine, so that a good seal necessarily implies a high opening torque, therefore a difficulty for the user.
EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION
L'invention vise à remédier aux inconvénients de l'état de la technique, et en particulier à freiner la pénétration des micro-organismes dans le récipient par le bouchon, en profitant des reliefs disponibles sur le col de la bouteille.The invention aims to overcome the drawbacks of the state of the art, and in particular to slow down the penetration of microorganisms in the container by the cap, taking advantage of the reliefs available on the neck of the bottle.
Pour ce faire, l'invention a pour objet, suivant un premier aspect, un bouchon d'obturation d'un col fileté de récipient, le col étant pourvu d'un rebord d'extrémité, d'une collerette faisant saillie radialement vers l'extérieur et d'un filetage extérieur situé entre le rebord et la collerette, le bouchon comportant une jupe pourvue d'un filetage intérieur pour coopérer avec le filetage extérieur du col ; une paroi transversale d'extrémité fermant la jupe et pourvue d'au moins une première lèvre annulaire d' étanchéité pour coopérer avec le col du récipient ; et une bande d'inviolabilité reliée à la jupe par l'intermédiaire d'un moyen de liaison sécable de telle manière que dans une position de fermeture du bouchon, la collerette se trouve axialement entre la bande d'inviolabilité et le filetage intérieur de la jupe. La jupe est en outre pourvue d'une lèvre annulaire additionnelle disposée axialement entre le filetage intérieur de la jupe et la bande, faisant saillie radialement vers l'intérieur et axialement vers la bande d'inviolabilité, la lèvre additionnelle étant destinée à venir en appui élastique contre la collerette. La lèvre annulaire additionnelle, en venant en appui élastique contre la collerette, constitue une barrière ou un filtre freinant la montée de micro-organisme entre les filets du bouchon. Bien que la collerette puisse avoir un état de surface peu propice à une étanchéité de bonne qualité, notamment lorsque le récipient a un plan de joint axial, cette lèvre additionnelle, en combinaison avec la ou les lèvres existantes, apporte une barrière additionnelle qui retarde la contamination de la partie supérieure du col de la bouteille.In order to do this, the object of the invention is, according to a first aspect, a closure cap for a threaded neck of a container, the neck being provided with an end flange, with a flange projecting radially towards the end of the container. outside and an external thread located between the rim and the flange, the cap having a skirt provided with an internal thread for cooperating with the external thread of the neck; a transverse end wall closing the skirt and provided with at least a first annular sealing lip to cooperate with the neck of the container; and a tamper-evident strip connected to the skirt by means of a breakable connection means such that in a closed position of the stopper, the flange is located axially between the tamper-evident band and the internal thread of the cap. skirt. The skirt is further provided with an additional annular lip disposed axially between the internal thread of the skirt and the strip, projecting radially inwards and axially towards the tamper-evident band, the additional lip being intended to bear elastic against the collar. The additional annular lip, coming in elastic support against the collar, is a barrier or a filter slowing the rise of microorganism between the threads of the plug. Although the flange may have a surface condition that is not conducive to a good seal, especially when the container has an axial joint plane, this additional lip, in combination with the existing lip or lips, provides an additional barrier which delays the contamination of the upper neck of the bottle.
Préférentiellement, la première lèvre est disposée de manière à assurer un contact avec une paroi intérieure du col du récipient et peut comporter un renflement annulaire faisant saillie radialement vers l'extérieur pour assurer un contact avec la paroi intérieure du col du récipient. Ce type de lèvre, dit « olive » dans le jargon du métier, s'avère particulièrement performant en termes d' étanchéité.Preferably, the first lip is arranged to provide contact with an inner wall of the neck of the container and may include an annular bulge projecting radially outwardly to provide contact with the inner wall of the neck of the container. This type of lip, called "olive" in the jargon of the trade, is particularly effective in terms of sealing.
Selon une variante particulièrement performante, la paroi transversale est pourvue d'une deuxième lèvre annulaire d' étanchéité, disposée radialement à l'extérieur de la première lèvre d' étanchéité, pour assurer un contact avec une paroi extérieure du col du récipient ou le rebord du col du récipient. Cette deuxième lèvre offre l'avantage de n'entrer en contact que tardivement avec le col de la bouteille, de sorte qu'elle n'augmente pas notablement le couple de fermeture. Optionnellement, un joint annulaire d'étanchéité est disposé entre la première lèvre et la deuxième lèvre, ce qui augmente encore l' étanchéité, sans augmenter notablement l'effort de serrage.According to a particularly powerful variant, the transverse wall is provided with a second annular sealing lip, arranged radially outside the first sealing lip, to ensure contact with an outer wall of the container neck or the rim. the neck of the container. This second lip offers the advantage of only contacting the neck of the bottle late, so that it does not significantly increase the closing torque. Optionally, an annular seal is disposed between the first lip and the second lip, which further increases the seal, without significantly increasing the clamping force.
Selon un autre mode de réalisation, la première lèvre d' étanchéité est disposée de manière à assurer un contact avec une paroi extérieure du col du récipient ou le rebord du col du récipient. Préférentiellement, la bande d'inviolabilité est pourvue de saillies d'accrochage s 'étendant axialement vers la paroi transversale et destinées à venir en appui avec une face inférieure de la collerette.In another embodiment, the first sealing lip is arranged to provide contact with an outer wall of the container neck or the rim of the container neck. Preferably, the tamper-evident band is provided with hooking projections extending axially towards the transverse wall and intended to bear against a lower face of the collar.
Selon un mode de réalisation, la bande d'inviolabilité est une bague fermée.According to one embodiment, the tamper-evident band is a closed ring.
Selon un mode de réalisation particulièrement avantageux, le moyen de liaison de la bande d'inviolabilité est constitué par des pontets sécables séparés les uns des autres par des incisions réalisées avec une découpe par lame.According to a particularly advantageous embodiment, the connecting means of the tamper-evident band consists of breakable bridges separated from each other by incisions made with a cut by blade.
Selon un deuxième aspect de l'invention, celle-ci a pour objet un récipient comportant d'une part un col fileté pourvu d'un rebord d'extrémité, d'au moins une collerette faisant saillie radialement vers l'extérieur et d'un filetage extérieur situé entre le rebord et la collerette, et d'autre part un bouchon, lequel comporte : une jupe pourvue d'un filetage intérieur coopérant avec le filetage extérieur du récipient ; une paroi transversale d'extrémité fermant la jupe et pourvue d'au moins une première lèvre annulaire d'étanchéité coopérant avec le col du récipient ; et une bande d'inviolabilité reliée à la jupe par l'intermédiaire d'au moins un moyen de liaison sécable de telle manière que la collerette se trouve axialement entre la bande et le filetage intérieur de la jupe. La jupe est en outre pourvue d'une lèvre annulaire additionnelle disposée axialement entre le filetage intérieur de la jupe et la bande, faisant saillie radialement vers l'intérieur et axialement vers la bande d'inviolabilité, la lèvre additionnelle étant en appui élastique contre la collerette.According to a second aspect of the invention, the subject of the invention is a container comprising, on the one hand, a threaded neck provided with an end flange, at least one flange projecting radially outwardly, and an external thread located between the flange and the collar, and secondly a plug, which comprises: a skirt provided with an internal thread cooperating with the external thread of the container; a transverse end wall closing the skirt and provided with at least a first annular sealing lip cooperating with the neck of the container; and a tamper-evident strip connected to the skirt by means of at least one breakable connecting means such that the flange is located axially between the strip and the internal thread of the skirt. The skirt is further provided with an additional annular lip arranged axially between the internal thread of the skirt and the strip, projecting radially inwards and axially towards the tamper-evident band, the additional lip being in elastic support against the collar.
Préférentiellement, la lèvre additionnelle est en appui élastique contre une face supérieure de la collerette tournée vers les filetages et s 'évasant en direction de la bande. En particulier, la face supérieure peut être tronconique. L'orientation de la face supérieure de la collerette sur laquelle repose la lèvre additionnelle est propice à un bon appui radial et axial. De plus, cette forme permet un passage non destructif de la bande d'inviolabilité lors du premier vissage du bouchon.Preferably, the additional lip is in elastic support against an upper face of the flange facing the threads and flaring towards the band. In particular, the upper face may be frustoconical. The orientation of the upper face of the collar on which the additional lip rests is conducive to good radial and axial support. In addition, this shape allows non-destructive passage of the tamper band during the first screwing of the plug.
Préférentiellement, la bande d'inviolabilité est pourvue de saillies d'accrochage en appui contre une paroi inférieure du col tournée vers la bande d'inviolabilité. Avantageusement, la paroi inférieure peut être plane. L'orientation de la face inférieure permet un bon accrochage.Preferably, the tamper-evident band is provided with hooking projections bearing against a bottom wall of the neck turned towards the tamper-evident band. Advantageously, the bottom wall may be flat. The orientation of the underside allows a good snap.
Préférentiellement, la lèvre additionnelle et les saillies d'accrochage sont dimensionnées de telle manière que lors du vissage du bouchon, la lèvre additionnelle entre en contact avec la collerette avant que les saillies d'accrochage viennent en appui contre la paroi inférieure.Preferably, the additional lip and the hooking projections are dimensioned such that during screwing of the plug, the additional lip comes into contact with the collar before the hooking projections abut against the bottom wall.
Selon un mode de réalisation particulièrement simple et compact, la paroi inférieure est constituée par une face inférieure de la collerette. Alternativement, on peut prévoir deux collerettes distinctes, une collerette supérieure coopérant avec la lèvre additionnelle et une collerette inférieure coopérant avec les saillies d'accrochage.According to a particularly simple and compact embodiment, the bottom wall is constituted by a lower face of the flange. Alternatively, one can provide two separate flanges, an upper flange cooperating with the additional lip and a lower flange cooperating with the attachment projections.
Selon un mode de réalisation, le col est en matière plastique moulée. Généralement, la matière première est du polyéthylène téréphtalate (PET) injectée sous forme d'une préforme, . La préforme est chauffée, étirée puis soufflées dans un moule. La forme de la bouteille dépend de la forme du moule utilisé. Le moule est généralement en trois parties, dont deux forment le corps du récipient, y compris la collerette, et une troisième forme la partie haute du col.According to one embodiment, the neck is made of molded plastic. Generally, the raw material is polyethylene terephthalate (PET) injected in the form of a preform,. The preform is heated, stretched and then blown into a mold. The shape of the bottle depends on the shape of the mold used. The mold is generally in three parts, two of which form the body of the container, including the collar, and a third forms the upper part of the neck.
BREVE DESCRIPTION DES FIGURES D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode particulier de réalisation de l'invention, donné à titre d'exemple non limitatif, et représenté en coupe sur la figure 1.BRIEF DESCRIPTION OF THE FIGURES Other advantages and features will emerge more clearly from the following description of a particular embodiment of the invention, given by way of non-limiting example, and shown in section in FIG.
DESCRIPTION DETAILLEE D'UN MODE DE REALISATIONDETAILED DESCRIPTION OF AN EMBODIMENT
En référence à la figure 1, un col fileté 10 de récipient, par exemple un col de bouteille contenant de l'eau minérale, un jus ou une boisson carbonatée, est fermé par un bouchon 12. Par convention, on considérera dans la suite de la description que l'axe 14 de vissage du col du récipient est orienté verticalement, et que le récipient s'ouvre vers le haut.With reference to FIG. 1, a threaded neck 10 of a container, for example a neck of a bottle containing mineral water, a juice or a carbonated beverage, is closed by a stopper 12. By convention, it will be considered in the following the description that the axis 14 of screwing the neck of the container is oriented vertically, and that the container opens upwards.
Le col 10 comporte un rebord d'extrémité 16 séparant une face cylindrique intérieure 18 tournée vers l'axe 14 d'une face extérieure 20. La face extérieure est pourvue d'un filetage 22 et d'une collerette 24 faisant saillie radialement vers l'extérieur, en dessous du filetage 22. La collerette comporte une face supérieure 26 tronconique du côté du filetage 22 et une face inférieure 28 plane du côté du corps du récipient.The neck 10 has an end flange 16 separating an inner cylindrical face 18 facing the axis 14 of an outer face 20. The outer face is provided with a thread 22 and a flange 24 projecting radially towards the outside. The flange has a frustoconical upper surface 26 on the threaded side 22 and a flat bottom face 28 on the side of the container body.
Le col 10 peut par exemple être un col normalisé, et notamment un col de diamètre intérieur voisin 25 mm et de diamètre extérieur à fond de filet voisin de 28 mm.The neck 10 may for example be a standardized neck, and in particular a neck of 25 mm inner diameter and outer diameter with a net of close to 28 mm.
Le bouchon 12 est moulé d'une pièce en matière plastique et comporte une jupe cylindrique 30 fermée par une paroi transversale d'extrémité discoïdale 32 et prolongée du côté de son extrémité libre 33 par une bande d'inviolabilité 34. La jupe comporte, sur sa face extérieure, des cannelures ou autres reliefs destinés à faciliter la prise en main lors du vissage ou du dévissage du bouchon. La face intérieure 38 de la jupe est pourvue d'un filetage intérieur 40 coopérant avec le filetage extérieur 22 du col. La bande d'inviolabilité 34 est reliée à l'extrémité libre 33 de la jupe par des pontets sécables 41 et comporte des saillies d'accrochage 42 qui s ' étendent radialement vers l ' intérieur et axialement vers le haut, et viennent en appui axial contre la paroi inférieure plane 28 de la collerette.The plug 12 is molded from a piece of plastic material and has a cylindrical skirt 30 closed by a transverse disc-end wall 32 and extended towards its free end 33 by a tamper-evident band 34. The skirt comprises, on its outer face, grooves or other reliefs to facilitate handling during screwing or unscrewing of the cap. The inner face 38 of the skirt is provided with an internal thread 40 cooperating with the external thread 22 of the neck. The tamper-evident band 34 is connected to the free end 33 of the skirt by bridges breakable 41 and has hooking projections 42 which extend radially inwardly and axially upwardly, and abut axially against the flat bottom wall 28 of the collar.
En outre, le bouchon comporte des moyens d'étanchéité agencés pour coopérer avec le col du récipient. Ces moyens comprennent une lèvre d'étanchéité annulaire flexible 44 dite intérieure faisant saillie axialement à partir de la paroi transversale 32 dans le même sens que la jupe latérale et pourvue d'un bourrelet d'extrémité 45 faisant saillie radialement vers l'extérieur et venant en appui élastique contre la face intérieure 18 du col de la bouteille. Les moyens d'étanchéité comprennent également une lèvre d'étanchéité annulaire flexible 46 dite extérieure faisant saillie de la paroi transversale axialement dans le même sens que la jupe latérale et coopérant avec le rebord supérieur 16 et/ou la face extérieure 20 du col, au-dessus du filetage 22. Les moyens d'étanchéité comportent en outre une troisième lèvre annulaire flexible 50, dite dans la suite inférieure par opposition aux deux lèvres 44 et 48 qui seront dites conjointement supérieures, la lèvre inférieure 50 étant située axialement entre la base du filetage 40 de la jupe et la partie supérieure de la bande d'inviolabilité 34, et faisant saillie à partir de la paroi intérieure 38 de la jupe axialement vers le bas et radialement vers l'intérieur, de manière à venir en appui contre la face supérieure tronconique 26 de la collerette.In addition, the cap comprises sealing means arranged to cooperate with the neck of the container. These means comprise a so-called inner annular flexible annular sealing lip 44 projecting axially from the transverse wall 32 in the same direction as the lateral skirt and provided with an end flange 45 projecting radially outwards and coming from in elastic support against the inner face 18 of the neck of the bottle. The sealing means also comprise a so-called outer annular flexible sealing lip 46 projecting from the transverse wall axially in the same direction as the lateral skirt and cooperating with the upper flange 16 and / or the external face 20 of the neck, at the The sealing means further comprise a third flexible annular lip 50, referred to below as the two lips 44 and 48 which will be said to be jointly upper, the lower lip 50 being located axially between the base the thread 40 of the skirt and the upper part of the tamper-evident band 34, and protruding from the inner wall 38 of the skirt axially downwards and radially inwards, so as to bear against the frustoconical upper face 26 of the collar.
Enfin, de manière optionnelle, le bouchon peut comporter un quatrième moyen d'étanchéité, constitué par un joint annulaire 52 recouvrant la partie de la paroi transversale 32 située entre la lèvre intérieure 44 et la lèvre extérieure 46, et qui vient en appui sur le rebord supérieur 16 du col de la bouteille. Ce joint, préférentiellement en élastomère thermoplastique (TPE), peut être appliqué soit a posteriori sur machine à jointer, soit bi-injecté avec le bouchon.Finally, optionally, the cap may comprise a fourth sealing means, constituted by an annular seal 52 covering the portion of the transverse wall 32 situated between the inner lip 44 and the outer lip 46, and which bears on the upper rim 16 of the neck of the bottle. This seal, preferably in elastomer Thermoplastic (TPE), can be applied either a posteriori on joining machine, or bi-injected with the cap.
De manière connue en soi, le bouchon 12 est initialement monté sur le col 10 du récipient par vissage, la bande d'inviolabilité se dilatant progressivement lors du vissage au passage de la paroi supérieure tronconique de la collerette, puis venant dans la position finale illustrée sur la figure lorsque le vissage est poursuivi. Pour s'assurer d'une bonne interférence entre la lèvre inférieure 50 et la collerette 24, on peut prévoir que la lèvre inférieure 50 entre en contact avec la collerette 24 avant que les saillies d'accrochage viennent en appui contre la paroi inférieure 28 de la collerette. Toutefois, pour ne pas augmenter significativement le couple de vissage, on fait en sorte que la lèvre inférieure 28 soit souple.In a manner known per se, the plug 12 is initially mounted on the neck 10 of the container by screwing, the tamper band gradually expanding during screwing to the passage of the frustoconical upper wall of the flange, then coming into the final position illustrated in the figure when screwing is continued. To ensure good interference between the lower lip 50 and the flange 24, it is possible for the lower lip 50 to come into contact with the flange 24 before the hooking projections bear against the lower wall 28 of FIG. the collar. However, in order not to significantly increase the tightening torque, it is ensured that the lower lip 28 is flexible.
Le joint élastomère situé entre les deux lèvres n'a pas d'effet significatif sur le couple d'ouverture.The elastomeric seal located between the two lips has no significant effect on the opening torque.
Une fois le bouchon en place, la lèvre inférieure au contact de la face tronconique de la collerette et assure une barrière supplémentaire aux polluants et microorganismes venant de l'extérieur.Once the cap is in place, the lower lip in contact with the frustoconical face of the flange and provides an additional barrier to pollutants and microorganisms from outside.
Il est à noter que la paroi tronconique de la collerette comporte généralement une bavure correspondant au plan de joint du récipient, alors que la partie supérieure du col, au- dessus du filetage, est exempte de plan de joint. Cette différence d'état de surface a pour conséquence que l'étanchéité obtenue grâce à la lèvre inférieure est de moins bonne qualité que celle obtenue grâce aux lèvres supérieures. De plus, comme on l'a dit, la lèvre inférieure est souple de sorte qu'elle n'exerce qu'une faible pression sur la collerette. Pour ces raisons, la lèvre inférieure ne saurait se substituer aux lèvres supérieures. On obtient donc avec la lèvre inférieure non pas une étanchéité parfaite, mais plus simplement un filtre ou une barrière supplémentaire aux microorganismes.It should be noted that the frustoconical wall of the flange generally comprises a burr corresponding to the joint plane of the container, while the upper part of the neck, above the thread, is free of joint plane. This difference in surface condition has the consequence that the seal obtained thanks to the lower lip is of lower quality than that obtained thanks to the upper lips. In addition, as has been said, the lower lip is flexible so that it exerts only a slight pressure on the collar. For these reasons, the lower lip can not replace the upper lips. So we get with the lower lip not a perfect seal, but more simply a filter or an additional barrier to microorganisms.
Naturellement, diverses variations sont possibles. Comme on l'a dit, le joint élastomère est optionnel et peut être omis. De même, l'une des deux lèvres supérieures peut être omise, que ce soit la lèvre intérieure ou la lèvre extérieure.Naturally, various variations are possible. As has been said, the elastomeric seal is optional and can be omitted. Likewise, one of the two upper lips may be omitted, either the inner lip or the outer lip.
Bien qu'il soit fait référence dans l'exemple de réalisation à une bouteille de col normalisé, l'invention vise de manière générale tout type de récipient à col fileté, en plastique ou en verre.Although reference is made in the exemplary embodiment to a standardized neck bottle, the invention generally relates to any type of threaded neck container, plastic or glass.
La collerette servant d'appui pour la lèvre d'étanchéité additionnelle peut être distincte de la collerette servant de retenue aux crochets de la bande d'inviolabilité.The flange supporting the additional sealing lip may be distinct from the flange for retaining the hooks of the tamper-evident band.
Pour améliorer encore l'étanchéité aux micro-organismes, on peut également remplacer les pontets sécables moulés utilisés habituellement pour relier la bande d'inviolabilité à la jupe du bouchon, par des pontets découpés avec une lame, donc séparés les uns des autres par des incisions pratiquées sans ôter de matière. On limite ainsi grandement les ouvertures entre la bande d'inviolabilité et la jupe inférieure du bouchon l'exposition du joint inférieur à la pollution. On peut également envisager de relier la bande d'inviolabilité à l'extrémité libre de la jupe par l'intermédiaire d'une ligne de faible résistance.To further improve the microorganism tightness, it is also possible to replace the molded breakable bridges usually used to connect the tamper-proof strip to the skirt of the stopper, by bridges cut with a blade, and thus separated from one another by means of incisions practiced without removing matter. This greatly limits the openings between the tamper-evident band and the lower skirt of the cap, the exposure of the lower seal to the pollution. It is also conceivable to connect the tamper-evident band to the free end of the skirt via a line of low resistance.
La bande d'inviolabilité peut être de forme quelconque connue en soi, par exemple une bague fermée ou une bande ouverte pourvue d'une languette d'arrachage. The tamper-evident band may be of any known form, for example a closed ring or an open band provided with a tear-off tab.

Claims

REVENDICATIONS
1. Bouchon (12) d'obturation d'un col fileté (10) de récipient, le col (10) étant pourvu d'un rebord d'extrémité (16), d'une collerette (24) faisant saillie radialement vers l'extérieur et d'un filetage extérieur (22) situé entre le rebord (16) et la collerette (24), le bouchon comportant :1. Plug (12) for closing a threaded neck (10) of the container, the neck (10) being provided with an end flange (16), with a flange (24) projecting radially towards the end outside and an external thread (22) located between the flange (16) and the flange (24), the cap comprising:
- une jupe (30) pourvue d'un filetage intérieur (40) pour coopérer avec le filetage extérieur (22) du col ;a skirt (30) provided with an internal thread (40) to cooperate with the external thread (22) of the neck;
- une paroi transversale d'extrémité (32) fermant la jupe (30) et pourvue d'au moins une première lèvre annulaire d'étanchéité (44, 46) pour coopérer avec le col du récipient ; et une bande d'inviolabilité (34) reliée à la jupe (30) par l'intermédiaire d'un moyen de liaison sécable (41) de telle manière que dans une position de fermeture du bouchon, la collerette (24) se trouve axialement entre la bande d'inviolabilité- a transverse end wall (32) closing the skirt (30) and provided with at least a first annular sealing lip (44, 46) to cooperate with the neck of the container; and a tamper-evident band (34) connected to the skirt (30) via a breakable connection means (41) so that in a closed position of the stopper the flange (24) is axially between the tamper tape
(34) et le filetage intérieur (40) de la jupe ; caractérisé en ce que la jupe est en outre pourvue d'une lèvre annulaire additionnelle (50) disposée axialement entre le filetage intérieur (40) de la jupe et la bande (34), faisant saillie radialement vers l'intérieur et axialement vers la bande d'inviolabilité, la lèvre additionnelle (50) étant destinée à venir en appui élastique contre la collerette (24).(34) and the internal thread (40) of the skirt; characterized in that the skirt is further provided with an additional annular lip (50) disposed axially between the inner thread (40) of the skirt and the band (34) projecting radially inwardly and axially towards the band inviolability, the additional lip (50) being intended to bear elastically against the flange (24).
2. Bouchon selon la revendication 1, caractérisé en outre en ce que la première lèvre (44) est disposée de manière à assurer un contact avec une paroi intérieure (20) du col du récipient. 2. Stopper according to claim 1, further characterized in that the first lip (44) is arranged to provide contact with an inner wall (20) of the neck of the container.
3. Bouchon selon la revendication 2, caractérisé en outre en ce que la première lèvre (44) comporte un renflement annulaire (45) faisant saillie radialement vers l'extérieur pour assurer un contact avec la paroi intérieure (18) du col du récipient.The stopper of claim 2, further characterized in that the first lip (44) has an annular bulge (45) protruding radially outward to provide contact with the inner wall (18) of the container neck.
4. Bouchon selon l'une quelconque des revendications 1 à 3, caractérisé en outre en ce que la paroi transversale est pourvue d'une deuxième lèvre annulaire d'étanchéité (46), disposée radialement à l'extérieur de la première lèvre d'étanchéité (44), pour assurer un contact avec une paroi extérieure (20) du col du récipient ou le rebord (16) du col du récipient.4. Stopper according to any one of claims 1 to 3, further characterized in that the transverse wall is provided with a second annular sealing lip (46) disposed radially outside the first lip of sealing (44) to ensure contact with an outer wall (20) of the container neck or the rim (16) of the container neck.
5. Bouchon selon la revendication 4, caractérisé en outre en ce qu'il comporte un joint annulaire d'étanchéité (50) disposé entre la première lèvre et la deuxième lèvre.5. Stopper according to claim 4, further characterized in that it comprises an annular seal (50) disposed between the first lip and the second lip.
6. Bouchon selon la revendication 1, caractérisé en outre en ce que la première lèvre d'étanchéité (46) est disposée de manière à assurer un contact avec une paroi extérieureStopper according to claim 1, further characterized in that the first sealing lip (46) is arranged to provide contact with an outer wall.
(20) du col du récipient ou le rebord (16) du col du récipient.(20) the neck of the container or the rim (16) of the neck of the container.
7. Bouchon selon l'une quelconque des revendications précédentes, caractérisé en outre en ce que la bande d'inviolabilité (34) est pourvue de saillies d'accrochage s 'étendant radialement vers l'intérieur et destinées à venir en appui axial avec une face inférieure de la collerette.7. Stopper according to any one of the preceding claims, further characterized in that the tamperproof band (34) is provided with hooking projections extending radially inwards and intended to bear axially with a underside of the collar.
8. Bouchon selon l'une quelconque des revendications précédentes, caractérisé en outre en ce que la bande d'inviolabilité (34) est une bague fermée. The cap of any preceding claim, further characterized in that the tamper evident band (34) is a closed ring.
9. Bouchon selon l'une quelconque des revendications précédentes, caractérisé en outre en ce que le moyen de liaison de la bande d'inviolabilité (34) est constitué par des pontets sécables (34) séparés les uns des autres par des incisions à la lame.9. Stopper according to any one of the preceding claims, further characterized in that the connecting means of the tamper-evident band (34) is constituted by breakable bridges (34) separated from each other by incisions to the blade.
10. Récipient comportant :10. Container comprising:
- un col fileté (10) pourvu d'un rebord d'extrémité (16), d'au moins une collerette (24) faisant saillie radialement vers l'extérieur et d'un filetage extérieur (22) situé entre le rebord (16) et la collerette (24), et- a threaded neck (10) provided with an end flange (16), at least one flange (24) protruding radially outwardly and an external thread (22) located between the flange (16); ) and the flange (24), and
- un bouchon (12) comportant :a plug (12) comprising:
- une jupe (30) pourvue d'un filetage intérieur (40) coopérant avec le filetage extérieur (22) du récipient ;a skirt (30) provided with an internal thread (40) cooperating with the external thread (22) of the container;
- une paroi transversale d'extrémité (32) fermant la jupe (30) et pourvue d'au moins une première lèvre annulaire d'étanchéité (44, 46) coopérant avec le col du récipient ; et- a transverse end wall (32) closing the skirt (30) and provided with at least a first annular sealing lip (44, 46) cooperating with the neck of the container; and
- une bande d'inviolabilité (34) reliée à la jupe (30) par l'intermédiaire d'au moins un moyen de liaison sécable (41) de telle manière que la collerette (24) se trouve axialement entre la bande et le filetage intérieur de la jupe ; caractérisé en ce que la jupe est en outre pourvue d'une lèvre annulaire additionnelle (50) disposée axialement entre le filetage intérieur (40) de la jupe et la bande (34), faisant saillie radialement vers l'intérieur et axialement vers la bande d'inviolabilité, la lèvre additionnelle (50) étant en appui élastique contre la collerette (24). a tamperproof band (34) connected to the skirt (30) via at least one breakable connection means (41) so that the flange (24) is located axially between the band and the threading inside the skirt; characterized in that the skirt is further provided with an additional annular lip (50) disposed axially between the inner thread (40) of the skirt and the band (34), projecting radially inwardly and axially towards the band inviolability, the additional lip (50) being in elastic support against the flange (24).
11. Récipient selon la revendication 10, caractérisé en outre en ce que la lèvre additionnelle (50) est en appui élastique contre une face supérieure (26) de la collerette tournée vers les filetages (22, 40) et s 'évasant en direction de la bande.Container according to claim 10, further characterized in that the additional lip (50) bears elastically against an upper face (26) of the flange facing the threads (22, 40) and flaring towards the the band.
12. Récipient selon la revendication 11, caractérisé en outre en ce que la face supérieure (26) est tronconique.The container of claim 11, further characterized in that the upper face (26) is frustoconical.
13. Récipient selon l'une quelconque des revendications 10 à 12, caractérisé en outre en ce que la bande d'inviolabilité (34) est pourvue de saillies d'accrochage (42) en appui contre une paroi inférieure (28) du col tournée vers la bande d'inviolabilité (34).Container according to any one of claims 10 to 12, further characterized in that the tamper-evident band (34) is provided with hooking projections (42) bearing against a bottom wall (28) of the neck turned to the tamper evident band (34).
14. Récipient selon la revendication 13, caractérisé en outre en ce que la paroi inférieure (28) est plane.The container of claim 13, further characterized in that the bottom wall (28) is planar.
15. Récipient selon la revendication 13 ou la revendication 14, caractérisé en outre en ce que la lèvre additionnelleThe container of claim 13 or claim 14, further characterized in that the additional lip
(50) et les saillies d'accrochage (42) sont dimensionnées de telle manière que lors du vissage du bouchon, la lèvre additionnelle (50) entre en contact avec la collerette (24) avant que les saillies d'accrochage (42) viennent en appui contre la paroi inférieure (28).(50) and the hooking projections (42) are dimensioned such that when the plug is screwed on, the additional lip (50) comes into contact with the flange (24) before the latching projections (42) resting against the lower wall (28).
16. Récipient selon l'une quelconque des revendications 13 àContainer according to any one of claims 13 to
15, caractérisé en outre en ce que la paroi inférieure est constituée par une face inférieure (28) de la collerette (24).15, further characterized in that the bottom wall is constituted by a lower face (28) of the flange (24).
17. Récipient selon l'une quelconque des revendications 10 àContainer according to one of claims 10 to
16, caractérisé en ce que le col (10) est en matière plastique moulée. 16, characterized in that the neck (10) is of molded plastic.
PCT/FR2007/001269 2006-07-24 2007-07-24 Threaded cap with increased sealing and container provided with such a cap WO2008012426A2 (en)

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WO2010086609A1 (en) 2009-01-30 2010-08-05 Beeson And Sons Limited Container closure assembly with pressure seal
WO2012130916A1 (en) 2011-03-29 2012-10-04 Bericap Bi-injected cap, and method for manufacturing such a cap
US9061801B2 (en) 2011-03-29 2015-06-23 Bericap Bi-injected cap, and method for manufacturing such a cap
US9943998B2 (en) 2011-03-29 2018-04-17 Bericap Method for molding a bi-material cap
WO2019078777A1 (en) * 2017-10-19 2019-04-25 Biotage Ab Chromatography cartridge seal arrangement
CN111201187A (en) * 2017-10-19 2020-05-26 百特基公司 Chromatography cartridge sealing arrangement
KR20200085778A (en) * 2017-10-19 2020-07-15 바이오테지 에이비 Chromatography cartridge seal device
JP2021500273A (en) * 2017-10-19 2021-01-07 バイオタージ・アクチボラゲットＢｉｏｔａｇｅ Ａｂ Chromatography cartridge encapsulation arrangement
CN111201187B (en) * 2017-10-19 2022-05-27 百特基公司 Chromatography cartridge sealing arrangement
US11378557B2 (en) 2017-10-19 2022-07-05 Biotage Ab Chromatography cartridge seal arrangement
JP7253541B2 (en) 2017-10-19 2023-04-06 バイオタージ・アクチボラゲット Chromatography cartridge sealing arrangement
AU2018351589B2 (en) * 2017-10-19 2024-01-04 Biotage Ab Chromatography cartridge seal arrangement
KR102651953B1 (en) 2017-10-19 2024-03-26 바이오테지 에이비 Chromatography cartridge seal device

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