EP0987187A1 - Closure cap with seal, method for making the same and assembly comprising a container and the closure with seal - Google Patents

Closure cap with seal, method for making the same and assembly comprising a container and the closure with seal Download PDF

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Publication number
EP0987187A1
EP0987187A1 EP99402262A EP99402262A EP0987187A1 EP 0987187 A1 EP0987187 A1 EP 0987187A1 EP 99402262 A EP99402262 A EP 99402262A EP 99402262 A EP99402262 A EP 99402262A EP 0987187 A1 EP0987187 A1 EP 0987187A1
Authority
EP
European Patent Office
Prior art keywords
seal
cap
plug
container
bead
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.)
Withdrawn
Application number
EP99402262A
Other languages
German (de)
French (fr)
Inventor
Jean Patrice Racine
Michel Luzzato
Alain Franchet
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.)
Tetra Pak Closures France SAS
Original Assignee
Novembal SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Novembal SAS filed Critical Novembal SAS
Publication of EP0987187A1 publication Critical patent/EP0987187A1/en
Withdrawn legal-status Critical Current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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0435—Threaded or like caps or cap-like covers secured by rotation with separate sealing elements
    • B65D41/045—Discs

Definitions

  • the invention relates to a plug with a seal, a method of producing such a plug and, finally, a set comprising a container for a certain content and the plug with seal in question.
  • plastic plugs sufficiently rigid of the type comprising on the one hand a wall transverse and an adjoining annular skirt provided internally of screw threads and on the other hand a internal annular projection projecting from the internal face of the skirt in the vicinity of the transverse wall. He is known that such a projection may have the function of participating maintaining a seal.
  • seals in material plastic capable of being elastically deformed of the type comprising on the one hand a deformable peripheral bead elastically and on the other hand a wall transverse to the periphery of which is the bead.
  • a seal seal can be part of a plug by being maintained by means of the internal annular projection of which is provided the latter.
  • the bead seal device can cooperate with the edge of the neck of the container for sealing.
  • plugs such as those previously mentioned which additionally include a ring inviolability adjoining the free edge of the skirt opposite the transverse wall, the connection between the skirt and the ring of inviolability being of least resistance to be able be fractured when the cap is first opened, the tamper-evident ring further comprising, towards inside, means capable of interfering with a projection corresponding ring provided on the neck of the container.
  • the invention relates to this third and last family and not the first two, which have their specificities and their own constraints.
  • the invention therefore aims to produce a plug with attached seal in which the seal is performed efficiently while the implementation of the plug, reportedly, is carried out conveniently.
  • the invention aims to achieve a molded shoulder seal but floating floating plug that it is described.
  • the invention aims at a plurality of maximum achievement with great flexibility and ease of implementation.
  • a seal as provided here can be mounted on different types of cap shells whose shape internal is adapted. Furthermore, these shells can, depending on the case, receive an attached seal as described or a joint made in situ.
  • the seal is limited on the side of the transverse wall of the plug by a substantially face plane.
  • the bead protrudes from the side of the face of the opposite seal which is intended to be turned towards the container neck.
  • the flexible annular shoulder surrounds outside the bead and is arranged in the extension of the transverse wall of the joint. This shoulder is intended to cooperate with the annular projection internal plug to maintain the seal sealing, this being thus maintained so shouldered and floating.
  • This shoulder has flexibility and an axial thickness suitable for easy mounting for effective retention of the seal in the plug well said.
  • the projecting face or free edge of the bead opposite the transverse face of the joint is arranged substantially in the plane of the face or of the free edge protruding from the internal annular projection of the plug.
  • the space between the plug and the seal is such that it is able on the one hand to allow the deformation appropriate seal after assembly and tightening of the cap provided with the seal on the neck of the container. On the other hand, this space is suitable for allowing the application and pressing the seal against the inner face of the cap, a once it mounted and tightened on the container neck.
  • the bead has, in cross section, a profile in general form of V, or U, or W or pseudo V - in particular with truncated or rounded point -, or of pseudo U, or pseudo W.
  • the bead is limited towards the exterior by a substantially frustoconical face or cylindrical corresponding substantially to the opening narrowed formed by the internal projection of the stopper.
  • the bead is bounded inward by one side substantially frustoconical with the diameter closest to the transverse wall of the joint is the small diameter while that the large diameter is intended to be turned towards the neck of the container.
  • the seal comprises also a second annular bead placed inside from the first and slightly moved away from it radially.
  • the internal projection of the plug a, in cross section transverse, a general form of V, or of U, or of pseudo V - notably with a truncated tip -, or pseudo U, overturned, having a substantially transverse branch relative to the main axis of the plug and a branch slightly tilted on this axis.
  • the cap with seal which has just been described comprises, in addition, a ring inviolability adjoining the free edge of the skirt opposite the transverse wall.
  • the connection between the skirt and the ring inviolability -by bridges, cutouts, one more thin or other- is of least resistance for be able to be fractured during the first opening of the plug.
  • the tamper-evident ring has, towards inside, protruding means capable of interfering with a corresponding annular projection provided on the neck of the container. These protruding means are, according to their realizations, a bead, one or more legs, one or several projections or otherwise.
  • Such a cap with seal and ring of inviolability can be the subject of different variants of achievement.
  • the ring of inviolability itself is divisible transversely in at least one place and opens at the time of the first opening the cap.
  • the ring cannot be cut transversely.
  • the ring When the ring is breakable, it can be connected to the skirt by at least one non-frangible connection or, at otherwise, do not include such a link not frangible.
  • the invention relates to a method of production of a plug as just described.
  • the plug is first made separately and the seal, by injection, compression, or other. Then we put in place and associate the joint sealing in and with the cap by forcing the seal to go beyond the internal projection of the cap. This operation is made possible by the form and the constitution of the shoulder combined with the shape of the actual plug. The joint is then kept shouldered but floating in the plug.
  • the invention relates to a set comprising on the one hand a container for a certain content, this container being provided with a neck with an external thread and, if necessary, with an annular projection intended to cooperate with a tamper-evident ring. All also includes a plug with seal as just described.
  • This cap with seal is mounted and tightened on the container neck. Compared to the situation where it is at rest, the seal is deformed to come to be applied pressing on the face internal of the cap, the bead being crushed and deformed by the extreme free part of the container neck.
  • Figures 1 and 2 are two schematic sectional views axial of two variant plugs according to the invention, comprising an attached seal and a ring inviolability.
  • Figure 3 is a partial view, on a larger scale Figures 1 and 2 showing the attached seal in the bottom of the cap.
  • Figures 4 and 5 are two partial views, at larger scale of Figure 3 showing the seal reported respectively in place in the front cap tightening by the neck of the container and after tightening.
  • Figures 6 to 11 are partial views, at larger scale, illustrating several embodiments of the joint seal reported in the bottom of the front cap Tightening.
  • cap with seal sealing 1 comprising on the one hand a plug 2 proper and secondly a seal 3 reported in cap 2.
  • the plug with seal 1 is intended to be mounted and tightened on the neck 4 of a container shown partially.
  • the container is in plastic or glass.
  • the container in question is typically a bottle to hold a drink.
  • the neck 4 has an internal face 5, an external face 6, both generally cylindrical, one side transverse 7 connecting the two faces 5 and 6 and having a general annular shape, of more or less large radius.
  • the neck 4 of the container also includes threads of screwing 9 intended for screwing the cap with seal 1.
  • the neck 4 of the container has an annular projection capable of cooperating with the ring 10.
  • the container neck 4 which has just been described has a general axis of symmetry 11. This axis is also an axis of general symmetry of the cap with seal 1.
  • the plug 2 is made of plastic material sufficiently rigid, by injection, compression or otherwise.
  • the plug 2 firstly has a transverse wall 12 forming the top of the plug 2 when it is placed above the collar 4.
  • the plug 2 then comprises a skirt 13, adjoining the wall 12 at its periphery, generally cylindrical in shape, annular, extending over a certain axial length the along axis 11.
  • the skirt 13 is provided on its internal face 14 with threads of screwing 15 complementary to the screwing threads 9 of the neck 4.
  • the plug 2 finally comprises a tamper-evident ring 10 attached to the free edge 16 of the skirt 13 opposite the transverse wall 12.
  • connection 17 between the skirt 13 and the tamper-evident ring 10, adjoining edge 16, is of less resistance, of so that it can be fractured during the first opening the cap with seal 1.
  • the link 17 comprises, according to the achievements, frangible bridges separated by spaces voids of material (Figure 1) or cutouts or even thinner ( Figure 2). These modes of achievement are not exclusive to others.
  • the tamper-evident ring 10 has towards inside, protruding means 18 capable of interfering with the annular projection then provided for this purpose on the container neck 4.
  • cap with seal 1 includes such a ring inviolability 10
  • this can also be subject to other variants relative to its breakable character and to its attached nature, after rupture of the link 17, to the skirt 13.
  • the ring tamper evident 10 is scored transversely and opens when the cap is opened for the first time ( Figure 2).
  • the tamper-evident ring 10 cannot be cut transversely ( Figure 1).
  • the tamper-evident ring 10 When the tamper-evident ring 10 is breakable, it can be provided that it is connected to the skirt 13 by at least a non-frangible bond. In this case, the ring tamper-evident 10 open remains attached to cap 2 well said.
  • the plug 2 also has an annular projection internal 19.
  • the projection 19 projects from the internal face 14 of the skirt 13. It is slightly separated from the internal face 20 of the transverse wall 12.
  • the projection 19 participates in the maintenance of the seal 3.
  • the internal projection 19 has in cross section, a general form of V (in this case reversed) comprising a branch 21, substantially transverse to axis 11 and a branch 22, slightly inclined relative to to axis 11, for example with an angle of the order of 20 degrees.
  • the branch 22 is itself connected to the internal face 20 of the transverse wall 12 by a rounded 23.
  • the branches 21, 22 are connected by an edge or a face free 25. This annular edge or face defines, towards the transverse wall 12, a narrowed opening 24.
  • the internal face 20 of the transverse wall 12 is flat.
  • the seal 3 is also made of material plastic, this being however capable of being deformed elastically.
  • This seal 3 is produced separately from the plug 2, by injection, compression, or otherwise.
  • the seal 3 comprises firstly a bead peripheral 26, elastically deformable, with which can cooperate the neck 4 of the container.
  • the gasket 3 secondly comprises a transverse wall 27 at the periphery of which is the bead 26.
  • the joint 3 has thirdly a shoulder peripheral 31 to which we will return later.
  • the seal 3, once made, is attached in cap 2. It is kept associated with the cap at means of the projection 19 cooperating with the shoulder 31. In this situation, it is formed between the internal face 20 of the transverse wall 12 and the facing face 28, a space 29.
  • the seal 3 can be accommodated in the space 29 in question, this disappearing altogether or part.
  • This space 29 is formed by the chamber at the bottom of the cap, as mentioned above.
  • the seal 3 is forced to pass beyond the projection 19 by the narrowed opening 24, which is made possible by due to the flexibility and the weakness of the thickness axial of the shoulder 31. Once this passage in force achieved, the seal 3 is maintained in a situation that we can qualify as shouldered but floating, clearly visible in Figure 4. The shoulder 31 then resumed the configuration it presented before the entry into force.
  • the face 28 of the transverse wall 27 of the seal 3 is substantially planar. That is also true to the right of the bead 26.
  • This configuration results from the very manufacturing process of the joint (mold plane).
  • the bead 26 projects from the side of the face 30 of the joint 3 intended to be turned towards the neck 4 of the container.
  • annular shoulder 31 surrounds at outside the bead 26 and is arranged in the extension of the transverse wall 27. This shoulder 31 is intended to cooperate or interfere with the projection 19, more precisely its inclined branch 22. This shoulder 31 is flexible, thin and thin to allow easy assembly by force passage in opening 24. Thanks to this constructive arrangement, the joint seal 3 is held in the plug 2 so as to do not untimely dissociate from it.
  • annular diameter of the shoulder 31 is in relation to the annular diameter between the opening narrowed 24 and the large diameter of the space 29 at the place where the branch 22 is connected to the rounding 23.
  • the outer lateral face 35 of the shoulder 31 is cylindrical or slightly tapered, the large base is on the side of the face 28.
  • the face or the edge free projection 32 of the bead 26 -placed in a plane transverse to the axis 11- and opposite the face 28 is arranged substantially in the plane of the face or edge free 25 of projection 19.
  • the face with the protruding edge 32 of the bead 26 can be located slightly beyond the edge plane or face 25, on the side opposite to the transverse wall 12 (FIGS. 9 to 11).
  • the space 29 previously mentioned is as it is suitable in the first place to allow the appropriate deformation of the seal 3 as a result of mounting and tightening the cap with seal 1 on the neck 4 of the container.
  • the space 29 is suitable for allow the application and support of the seal 3, by its face 28, against the internal face 20 of the plug 2, a once the cap with seal 1 is fitted and tightened on the col 4.
  • these two faces 20, 28 are mainly or substantially planar.
  • the bead 26 a in cross section, a general form of V to truncated or rounded tip.
  • This bead 26 is limited towards the outside by a face 33, substantially cylindrical or frustoconical corresponding substantially at the opening 24.
  • the bead 26 is limited inward by a face 34 having substantially a frustoconical shape.
  • the diameter of this trunk of cone the most close to wall 27 is the small diameter while the large diameter is intended to be turned towards the neck 4 of the container. Consequently, the bead 26 and the shoulder 31 are oriented inclined in the same direction.
  • the seal sealing 3 comprises a single bead 26.
  • the joint sealing 3 also includes a second bead annular, placed inside the first bead 26 and slightly away from him radially.
  • the seal 3 is deformed, compared to his resting situation. This distortion is such that the seal 3 is applied in support on the internal face 20 of the plug 2.
  • the bead 26 -the second bead if necessary this one is planned - is crushed and deformed by the part free extremity of the neck 4.
  • the bottom of the plug 2 forms a chamber for compression seal 3.
  • plug proper 2 is suitable not only to receive an attached joint such as 3, shouldered and floating once mounted, as described above, but also, alternately and possibly a joint made in situ.
  • the plug 2 is therefore versatile. Symmetrically, the joint 3 can be attached to different forms of cap shells 2.
  • Figures 6 to 11 show different variants not limitation of joint shapes 3.
  • the face 34 is strongly inclined on the axis 11 and rounded towards the wall 27.
  • the bead 26 is applied towards edge 8.
  • first bead 26 and a second bead 36 placed inside of the first bead 26 and spaced from it radially.
  • the two beads 26 and 36 are arranged substantially symmetrically with respect to each other, the assembly having a general form of pseudo W.
  • the bead 26 is "attacked" by the edge 8.
  • the bead 36 by the opposite edge 37.
  • FIG. 8 represents a variant of the embodiment shown in Figure 7, wherein the two beads 26 and 36 are dyssymmetric. In this case, the bead 36 is wider than the bead 26.
  • FIG. 9 represents a variant of the embodiment shown in Figure 8 wherein the bead 36 includes an extension 38 directed axially, opposite the wall 27, which is applied against the internal face 5 of the neck 4.
  • FIG. 10 represents a variant of the embodiment shown in Figure 7.
  • the two beads 26 and 36 are much further apart than in the case of FIG. 7, their shape being more that of an inverted U than a V reversed.
  • Figure 11 is a variant of Figure 10 in which a third bead 39 is taken between the beads 26 and 36.

Abstract

The plastic screw stopper comprises an internal annular projection (19) which holds a sealing joint (3) floating in a space (29) between the internal surface (20) of the stopper transverse wall and the upper surface (28) of the joint. The joint is deformed during the placing of the stopper on the container neck and the seal (26) is crushed by the free end part of the neck.

Description

L'invention concerne un bouchon avec un joint d'étanchéité, un procédé de réalisation d'un tel bouchon et, enfin, un ensemble comprenant un récipient pour un certain contenu et le bouchon avec joint d'étanchéité en question.The invention relates to a plug with a seal, a method of producing such a plug and, finally, a set comprising a container for a certain content and the plug with seal in question.

On connaít déjà des bouchons en matière plastique suffisamment rigide du type comportant d'une part une paroi transversale et une jupe annulaire attenante pourvue intérieurement de filets de vissage et d'autre part une saillie annulaire interne saillant de la face interne de la jupe au voisinage de la paroi transversale. Il est connu qu'une telle saillie peut avoir pour fonction de participer au maintien d'un joint d'étanchéité.We already know plastic plugs sufficiently rigid of the type comprising on the one hand a wall transverse and an adjoining annular skirt provided internally of screw threads and on the other hand a internal annular projection projecting from the internal face of the skirt in the vicinity of the transverse wall. He is known that such a projection may have the function of participating maintaining a seal.

On connaít également des joints d'étanchéité en matière plastique capables d'être déformés élastiquement, du type comportant d'une part un bourrelet périphérique déformable élastiquement et d'autre part une paroi transversale à la périphérie de laquelle se trouve le bourrelet. Un tel joint d'étanchéité peut faire partie d'un bouchon en étant maintenu au moyen de la saillie annulaire interne dont est pourvu ce dernier. Dans une telle réalisation, le bourrelet périphérique du joint peut coopérer avec le bord du col du récipient pour assurer une fermeture étanche.We also know seals in material plastic capable of being elastically deformed, of the type comprising on the one hand a deformable peripheral bead elastically and on the other hand a wall transverse to the periphery of which is the bead. Such a seal seal can be part of a plug by being maintained by means of the internal annular projection of which is provided the latter. In such an embodiment, the bead seal device can cooperate with the edge of the neck of the container for sealing.

On connaít par ailleurs des bouchons tels que ceux précédemment mentionnés qui comportent, en outre, une bague d'inviolabilité attenante au bord libre de la jupe opposé à la paroi transversale, la liaison entre la jupe et la bague d'inviolabilité étant de moindre résistance pour pouvoir être fracturée lors de la première ouverture du bouchon, la bague d'inviolabilité comportant en outre, vers l'intérieur, des moyens aptes à interférer avec une saillie annulaire correspondante prévue sur le col du récipient.We also know plugs such as those previously mentioned which additionally include a ring inviolability adjoining the free edge of the skirt opposite the transverse wall, the connection between the skirt and the ring of inviolability being of least resistance to be able be fractured when the cap is first opened, the tamper-evident ring further comprising, towards inside, means capable of interfering with a projection corresponding ring provided on the neck of the container.

On peut se référer en particulier aux documents EP-A-637550, GB-A-2 092 999, WO-A-94-18084, FR-A-2 709 473, FR-A-2 692 555, FR-A-2711969 et, enfin, FR-A-2 454 568. We can refer in particular to the documents EP-A-637550, GB-A-2 092 999, WO-A-94-18084, FR-A-2 709 473, FR-A-2 692 555, FR-A-2711969 and, finally, FR-A-2 454 568.

D'une façon générale, les moyens d'étanchéité que comportent les bouchons appartiennent à l'une des trois familles suivantes :

  • celle où les moyens d'étanchéité sont intégrés au bouchon lui même, conçu en conséquence ;
  • celle où le joint d'étanchéité est réalisé in situ, dans le bouchon lui même ;
  • et, enfin, celle où le joint d'étanchéité réalisé préalablement par ailleurs, est rapporté dans le bouchon.
In general, the sealing means that the plugs include belong to one of the following three families:
  • that where the sealing means are integrated into the plug itself, designed accordingly;
  • that where the seal is made in situ, in the cap itself;
  • and, finally, that in which the seal previously produced elsewhere is attached to the plug.

L'invention concerne cette troisième et dernière famille et non les deux premières, lesquelles ont leurs spécificités et leurs contraintes propres.The invention relates to this third and last family and not the first two, which have their specificities and their own constraints.

L'invention vise par conséquent à réaliser un bouchon avec joint d'étanchéité rapporté dans lequel l'étanchéité est réalisée de façon efficiente tandis que la mise en place du bouchon, de façon rapportée, est réalisée commodément.The invention therefore aims to produce a plug with attached seal in which the seal is performed efficiently while the implementation of the plug, reportedly, is carried out conveniently.

Plus particulièrement l'invention vise à réaliser un bouchon à joint rapporté moulé épaulé mais flottant ainsi qu'il est décrit.More particularly, the invention aims to achieve a molded shoulder seal but floating floating plug that it is described.

Par ailleurs, l'invention vise à une pluralité de réalisation maximale avec une grande souplesse et facilité de mise en oeuvre.Furthermore, the invention aims at a plurality of maximum achievement with great flexibility and ease of implementation.

En effet, un joint tel qu'il est ici prévu peut être monté sur différents types de coques de bouchon dont la forme interne est adaptée. Par ailleurs, ces coques peuvent, selon les cas, recevoir un joint rapporté tel que décrit ou un joint réalisé in situ.Indeed, a seal as provided here can be mounted on different types of cap shells whose shape internal is adapted. Furthermore, these shells can, depending on the case, receive an attached seal as described or a joint made in situ.

Selon un premier aspect, l'invention concerne un bouchon avec joint d'étanchéité dans lequel :

  • le bouchon proprement dit, en matière plastique suffisamment rigide, comporte d'une part une paroi transversale et une jupe cylindrique annulaire attenante pourvue intérieurement de filets de vissage destinés à coopérer avec des filets de vissage complémentaires du col d'un récipient, d'autre part une saillie annulaire interne saillant de la face interne de la jupe au voisinage de la paroi transversale, cette saillie ayant pour fonction de participer au maintien d'un joint d'étanchéité ;
  • le joint d'étanchéité, en matière plastique capable d'être déformée élastiquement, comporte en premier lieu un bourrelet périphérique, déformable élastiquement, avec lequel peut coopérer le bord du col du récipient pour l'étanchéité, en deuxième lieu une paroi transversale à la périphérie de laquelle se trouve le bourrelet, et en troisième lieu un épaulement annulaire souple de maintien du joint, coopérant avec la saillie annulaire du bouchon proprement dit.
  • le joint d'étanchéité, lorsqu'il est réalisé, est rapporté dans le bouchon et maintenu flottant au moyen de la saillie annulaire interne coopérant avec l'épaulement de manière que soit ménagé entre la face interne de la paroi transversale du bouchon et la face en regard du joint d'étanchéité un espace de forme générale cylindrique aplatie dans lequel peut venir se loger le joint une fois le bouchon avec joint d'étanchéité monté et serré sur le col du récipient.
According to a first aspect, the invention relates to a plug with seal in which:
  • the plug proper, made of sufficiently rigid plastic, comprises on the one hand a transverse wall and an adjoining annular cylindrical skirt provided internally with screw threads intended to cooperate with complementary screw threads on the neck of a container, on the other hand share an internal annular projection projecting from the internal face of the skirt in the vicinity of the transverse wall, this projection having the function of participating in the maintenance of a seal;
  • the seal, made of plastic capable of being elastically deformed, firstly comprises a peripheral bead, elastically deformable, with which the edge of the container neck can cooperate for sealing, secondly a wall transverse to the periphery of which the bead is located, and thirdly a flexible annular shoulder for holding the seal, cooperating with the annular projection of the plug proper.
  • the seal, when produced, is attached to the plug and kept floating by means of the internal annular projection cooperating with the shoulder so that is formed between the internal face of the transverse wall of the plug and the face opposite the seal a generally cylindrical flattened space in which the seal can be housed once the cap with seal mounted and tightened on the neck of the container.

Au repos, le joint d'étanchéité est limité du coté de la paroi transversale du bouchon par une face sensiblement plane. Le bourrelet est en saillie du coté de la face du joint opposée laquelle est destinée à être tournée vers le col du récipient. L'épaulement annulaire souple entoure à l'extérieur le bourrelet et est disposé dans le prolongement de la paroi transversale du joint. Cet épaulement est destiné à coopérer avec la saillie annulaire interne du bouchon pour assurer le maintien du joint d'étanchéité, celui-ci étant ainsi maintenu de façon épaulée et flottante. Cet épaulement présente une souplesse et une épaisseur axiale aptes à permettre le montage aisé en vue d'un maintien efficace du joint dans le bouchon proprement dit.At rest, the seal is limited on the side of the transverse wall of the plug by a substantially face plane. The bead protrudes from the side of the face of the opposite seal which is intended to be turned towards the container neck. The flexible annular shoulder surrounds outside the bead and is arranged in the extension of the transverse wall of the joint. This shoulder is intended to cooperate with the annular projection internal plug to maintain the seal sealing, this being thus maintained so shouldered and floating. This shoulder has flexibility and an axial thickness suitable for easy mounting for effective retention of the seal in the plug well said.

Lorsque le joint d'étanchéité est monté dans le bouchon et au repos, la face ou le bord libre saillant du bourrelet opposé à la face transversale du joint est disposé sensiblement dans le plan de la face ou du bord libre saillant de la saillie annulaire interne du bouchon.When the seal is mounted in the cap and at rest, the projecting face or free edge of the bead opposite the transverse face of the joint is arranged substantially in the plane of the face or of the free edge protruding from the internal annular projection of the plug.

L'espace entre le bouchon et le joint d'étanchéité est tel qu'il est apte d'une part à permettre la déformation appropriée du joint d'étanchéité par suite du montage et du serrage du bouchon pourvu du joint sur le col du récipient. D'autre part, cet espace est apte à permettre l'application et l'appui du joint contre la face interne du bouchon, une fois celui-ci monté et serré sur le col du récipient.The space between the plug and the seal is such that it is able on the one hand to allow the deformation appropriate seal after assembly and tightening of the cap provided with the seal on the neck of the container. On the other hand, this space is suitable for allowing the application and pressing the seal against the inner face of the cap, a once it mounted and tightened on the container neck.

Le bourrelet a, en section droite transversale, un profil en forme générale de V, ou du U, ou de W ou de pseudo V - notamment à pointe tronquée ou arrondie -, ou de pseudo U, ou de pseudo W.The bead has, in cross section, a profile in general form of V, or U, or W or pseudo V - in particular with truncated or rounded point -, or of pseudo U, or pseudo W.

Dans une réalisation le bourrelet est limité vers l'extérieur par une face sensiblement tronconique ou cylindrique correspondant sensiblement à l'ouverture rétrécie formé par la saillie interne du bouchon. Le bourrelet est limité, vers l'intérieur, par une face sensiblement tronconique dont le diamètre le plus proche de la paroi transversale du joint est le petit diamètre tandis que le grand diamètre est destiné à être tourné vers le col du récipient. In one embodiment, the bead is limited towards the exterior by a substantially frustoconical face or cylindrical corresponding substantially to the opening narrowed formed by the internal projection of the stopper. The bead is bounded inward by one side substantially frustoconical with the diameter closest to the transverse wall of the joint is the small diameter while that the large diameter is intended to be turned towards the neck of the container.

Selon une réalisation, le joint d'étanchéité comporte également un second bourrelet annulaire placé à l'intérieur du premier et légèrement écarté de lui radialement.According to one embodiment, the seal comprises also a second annular bead placed inside from the first and slightly moved away from it radially.

La saillie interne du bouchon a, en section droite transversale, une forme générale de V, ou de U, ou de pseudo V -notamment à pointe tronquée-, ou de pseudo U, renversé, comportant une branche sensiblement transversale par rapport à l'axe principal du bouchon et une branche légèrement inclinée sur cet axe.The internal projection of the plug a, in cross section transverse, a general form of V, or of U, or of pseudo V - notably with a truncated tip -, or pseudo U, overturned, having a substantially transverse branch relative to the main axis of the plug and a branch slightly tilted on this axis.

Selon une réalisation, le bouchon, avec joint d'étanchéité qui vient d'être décrit comporte, en outre, une bague d'inviolabilité attenante au bord libre de la jupe opposé à la paroi transversale. La liaison entre la jupe et la bague d'inviolabilité -par des ponts, des découpes, une plus faible épaisseur ou autre- est de moindre résistance pour pouvoir être fracturée lors de la première ouverture du bouchon. En outre, la bague d'inviolabilité comporte, vers l'intérieur, des moyens en saillie aptes à interférer avec une saillie annulaire correspondante prévue sur le col du récipient. Ces moyens en saillie sont, selon leurs réalisations, un bourrelet, une ou plusieurs pattes, une ou plusieurs saillies ou autrement.According to one embodiment, the cap, with seal which has just been described comprises, in addition, a ring inviolability adjoining the free edge of the skirt opposite the transverse wall. The connection between the skirt and the ring inviolability -by bridges, cutouts, one more thin or other- is of least resistance for be able to be fractured during the first opening of the plug. In addition, the tamper-evident ring has, towards inside, protruding means capable of interfering with a corresponding annular projection provided on the neck of the container. These protruding means are, according to their realizations, a bead, one or more legs, one or several projections or otherwise.

Un tel bouchon avec joint d'étanchéité et bague d'inviolabilité peut faire l'objet de différentes variantes de réalisation. Selon une première variante, la bague d'inviolabilité elle même est sécable transversalement en au moins un endroit et s'ouvre au moment de la première ouverture du bouchon. Selon une autre variante, la bague n'est pas sécable transversalement.Such a cap with seal and ring of inviolability can be the subject of different variants of achievement. According to a first variant, the ring of inviolability itself is divisible transversely in at least one place and opens at the time of the first opening the cap. According to another variant, the ring cannot be cut transversely.

Lorsque la bague est sécable, elle peut être reliée à la jupe par au moins une liaison non frangible ou, au contraire, ne pas comporter une telle liaison non frangible. When the ring is breakable, it can be connected to the skirt by at least one non-frangible connection or, at otherwise, do not include such a link not frangible.

Selon un autre aspect, l'invention concerne un procédé de réalisation d'un bouchon tel qu'il vient d'être décrit. Dans ce procédé, on réalise d'abord séparément le bouchon et le joint d'étanchéité, par injection, compression, ou autrement. Ensuite, on met en place et on associe le joint d'étanchéité dans et avec le bouchon en forçant le joint à passer au delà de la saillie interne du bouchon. Cette opération est rendue possible par suite de la forme et de la constitution de l'épaulement combinée à la forme du bouchon proprement dit. Le joint est alors maintenu épaulé mais flottant dans le bouchon.According to another aspect, the invention relates to a method of production of a plug as just described. In this process, the plug is first made separately and the seal, by injection, compression, or other. Then we put in place and associate the joint sealing in and with the cap by forcing the seal to go beyond the internal projection of the cap. This operation is made possible by the form and the constitution of the shoulder combined with the shape of the actual plug. The joint is then kept shouldered but floating in the plug.

Selon un dernier aspect, l'invention concerne un ensemble comprenant d'une part un récipient pour un certain contenu, ce récipient étant pourvu d'un col avec un filetage externe et, le cas échéant, avec une saillie annulaire destinée à coopérer avec une bague d'inviolabilité. L'ensemble comprend d'autre part un bouchon avec joint d'étanchéité tel qu'il vient d'être décrit. Ce bouchon avec joint est monté et serré sur le col du récipient. Par rapport à la situation ou il est au repos, le joint d'étanchéité est déformé pour venir être appliqué en appui sur la face interne du bouchon, le bourrelet étant écrasé et déformé par la partie extrême libre du col du récipient.According to a last aspect, the invention relates to a set comprising on the one hand a container for a certain content, this container being provided with a neck with an external thread and, if necessary, with an annular projection intended to cooperate with a tamper-evident ring. All also includes a plug with seal as just described. This cap with seal is mounted and tightened on the container neck. Compared to the situation where it is at rest, the seal is deformed to come to be applied pressing on the face internal of the cap, the bead being crushed and deformed by the extreme free part of the container neck.

D'autres avantages et caractéristiques de l'invention résulteront de la description qui suivra en référence aux dessins annexés dans lesquels :Other advantages and characteristics of the invention will result from the description which follows with reference to annexed drawings in which:

Les figures 1 et 2 sont deux vues schématiques en coupe axiale de deux variantes de bouchon selon l'invention, comportant un joint d'étanchéité rapporté et une bague d'inviolabilité.Figures 1 and 2 are two schematic sectional views axial of two variant plugs according to the invention, comprising an attached seal and a ring inviolability.

La figure 3 est une vue partielle, à plus grande échelle des figures 1 et 2, montrant le joint d'étanchéité rapporté dans le fond du bouchon. Figure 3 is a partial view, on a larger scale Figures 1 and 2 showing the attached seal in the bottom of the cap.

Les figures 4 et 5 sont deux vues partielles, à plus grande échelle de la figure 3, montrant le joint d'étanchéité rapporté respectivement en place dans le bouchon avant serrage par le col du récipient et après serrage.Figures 4 and 5 are two partial views, at larger scale of Figure 3 showing the seal reported respectively in place in the front cap tightening by the neck of the container and after tightening.

Les figures 6 à 11 sont des vues partielles, à plus grande échelle, illustrant plusieurs modes de réalisation du joint d'étanchéité rapporté dans le fond du bouchon avant serrage.Figures 6 to 11 are partial views, at larger scale, illustrating several embodiments of the joint seal reported in the bottom of the front cap Tightening.

Sur les figures est représenté un bouchon avec joint d'étanchéité 1 comprenant d'une part un bouchon 2 proprement dit et d'autre part un joint d'étanchéité 3 rapporté dans le bouchon 2.In the figures is shown a cap with seal sealing 1 comprising on the one hand a plug 2 proper and secondly a seal 3 reported in cap 2.

Le bouchon avec joint 1 est destiné à être monté et serré sur le col 4 d'un récipient représenté partiellement.The plug with seal 1 is intended to be mounted and tightened on the neck 4 of a container shown partially.

Selon les applications considérées, le récipient est en matière plastique ou en verre.Depending on the applications considered, the container is in plastic or glass.

Le récipient dont il s'agit est typiquement une bouteille pour contenir une boisson.The container in question is typically a bottle to hold a drink.

Le col 4 présente une face interne 5, une face externe 6, toutes deux de forme générale cylindrique, une face transversale 7 reliant les deux faces 5 et 6 et ayant une forme générale annulaire, de rayon plus ou moins grand.The neck 4 has an internal face 5, an external face 6, both generally cylindrical, one side transverse 7 connecting the two faces 5 and 6 and having a general annular shape, of more or less large radius.

Enfin, on désigne par 8 le bord périphérique extérieur, plus au moins arrondi, du col 4, entre la face externe 6 et la face transversale 7.Finally, denote by 8 the outer peripheral edge, more or less rounded, from the neck 4, between the external face 6 and the transverse face 7.

Le col 4 du récipient comporte également des filets de vissage 9 destinés au vissage du bouchon avec joint 1.The neck 4 of the container also includes threads of screwing 9 intended for screwing the cap with seal 1.

Enfin et dans le cas où le bouchon avec joint 1 comporte une bague d'inviolabilité 10, le col 4 du récipient comporte une saillie annulaire apte à coopérer avec la bague 10.Finally and in the case where the cap with seal 1 comprises a tamper-evident ring 10, the neck 4 of the container has an annular projection capable of cooperating with the ring 10.

Le col 4 de récipient qui vient d'être décrit présente un axe général de symétrie 11. Cet axe est également un axe de symétrie général du bouchon avec joint 1.The container neck 4 which has just been described has a general axis of symmetry 11. This axis is also an axis of general symmetry of the cap with seal 1.

Le bouchon 2 est réalisé en matière plastique suffisamment rigide, par injection, compression ou autrement.The plug 2 is made of plastic material sufficiently rigid, by injection, compression or otherwise.

Le bouchon 2 comporte d'abord une paroi transversale 12 formant le sommet du bouchon 2 lorsque celui ci est placé au dessus du col 4.The plug 2 firstly has a transverse wall 12 forming the top of the plug 2 when it is placed above the collar 4.

Le bouchon 2 comporte ensuite une jupe 13, attenante à la paroi 12 à sa périphérie, de forme générale cylindrique, annulaire, s'étendant sur une certaine longueur axiale le long de l'axe 11.The plug 2 then comprises a skirt 13, adjoining the wall 12 at its periphery, generally cylindrical in shape, annular, extending over a certain axial length the along axis 11.

La jupe 13 est pourvue sur sa face interne 14 de filets de vissage 15 complémentaires des filets de vissage 9 du col 4.The skirt 13 is provided on its internal face 14 with threads of screwing 15 complementary to the screwing threads 9 of the neck 4.

Selon une réalisation, le bouchon 2 comporte enfin une bague d'inviolabilité 10 attenante au bord libre 16 de la jupe 13 opposée à la paroi transversale 12.According to one embodiment, the plug 2 finally comprises a tamper-evident ring 10 attached to the free edge 16 of the skirt 13 opposite the transverse wall 12.

La liaison 17 entre la jupe 13 et la bague d'inviolabilité 10, attenante au bord 16, est de moindre résistance, de manière à pouvoir être fracturée lors de la première ouverture du bouchon avec joint 1.The connection 17 between the skirt 13 and the tamper-evident ring 10, adjoining edge 16, is of less resistance, of so that it can be fractured during the first opening the cap with seal 1.

A cet effet, la liaison 17 comporte, selon les réalisations, des ponts frangibles séparés par des espaces vides de matière (figure 1) ou encore des découpes ou encore une plus faible épaisseur (figure 2). Ces modes de réalisation ne sont pas exclusifs d'autres. To this end, the link 17 comprises, according to the achievements, frangible bridges separated by spaces voids of material (Figure 1) or cutouts or even thinner (Figure 2). These modes of achievement are not exclusive to others.

D'autre part, la bague d'inviolabilité 10 comporte vers l'intérieur, des moyens en saillie 18 aptes à interférer avec la saillie annulaire alors prévue à cet effet sur le col 4 du récipient.On the other hand, the tamper-evident ring 10 has towards inside, protruding means 18 capable of interfering with the annular projection then provided for this purpose on the container neck 4.

Ces moyens 18 peuvent également faire l'objet de différentes variantes de réalisation.These means 18 can also be the subject of different variants.

Selon les cas, ils sont continus (figure 1) ou discontinus (figure 2). Ils ont la forme d'un bourrelet (figure 1), de pattes (figure 2), de saillies ou peuvent être réalisés autrement.Depending on the case, they are continuous (Figure 1) or discontinuous (figure 2). They have the shape of a bead (Figure 1), legs (Figure 2), projections or can be made other.

Lorsque le bouchon avec joint 1 comporte une telle bague d'inviolabilité 10, celle ci peut également faire l'objet d'autres variantes relativement à son caractère sécable et à son caractère attaché, après rupture de la liaison 17, à la jupe 13.When the cap with seal 1 includes such a ring inviolability 10, this can also be subject to other variants relative to its breakable character and to its attached nature, after rupture of the link 17, to the skirt 13.

Ainsi, selon une variante de réalisation, la bague d'inviolabilité 10 est sécable transversalement et s'ouvre au moment de la première ouverture du bouchon (figure 2). Selon une autre réalisation, la bague d'inviolabilité 10 n'est pas sécable transversalement (figure 1).Thus, according to an alternative embodiment, the ring tamper evident 10 is scored transversely and opens when the cap is opened for the first time (Figure 2). According to another embodiment, the tamper-evident ring 10 cannot be cut transversely (Figure 1).

Lorsque la bague d'inviolabilité 10 est sécable, il peut être prévu qu'elle soit reliée à la jupe 13 par au moins une liaison non frangible. Dans ce cas, la bague d'inviolabilité 10 ouverte reste accrochée au bouchon 2 proprement dit.When the tamper-evident ring 10 is breakable, it can be provided that it is connected to the skirt 13 by at least a non-frangible bond. In this case, the ring tamper-evident 10 open remains attached to cap 2 well said.

Dans une autre variante, il n'est pas prévu une telle liaison non frangible et une fois la liaison 17 fracturée, la bague d'inviolabilité 10 est totalement dissociée du bouchon 2.In another variant, no such provision is made non-frangible bond and once the bond 17 fractured, the tamper-evident ring 10 is completely dissociated from the cap 2.

Le bouchon 2 comporte en outre une saillie annulaire interne 19. La saillie 19 saille de la face interne 14 de la jupe 13. Elle est légèrement écartée de la face interne 20 de la paroi transversale 12.The plug 2 also has an annular projection internal 19. The projection 19 projects from the internal face 14 of the skirt 13. It is slightly separated from the internal face 20 of the transverse wall 12.

La saillie 19 participe au maintien du joint d'étanchéité 3.The projection 19 participates in the maintenance of the seal 3.

Dans la réalisation plus spécialement considérée ici, la saillie interne 19, a en section droite transversale, une forme générale de V (en l'occurrence renversé) comportant une branche 21, sensiblement transversale par rapport à l'axe 11 et une branche 22, légèrement inclinée par rapport à l'axe 11, par exemple avec un angle de l'ordre de 20 degrés.In the embodiment more particularly considered here, the internal projection 19, has in cross section, a general form of V (in this case reversed) comprising a branch 21, substantially transverse to axis 11 and a branch 22, slightly inclined relative to to axis 11, for example with an angle of the order of 20 degrees.

La branche 22 est elle même reliée à la face interne 20 de la paroi transversale 12 par un arrondi 23.The branch 22 is itself connected to the internal face 20 of the transverse wall 12 by a rounded 23.

Les branches 21, 22 sont reliées par un bord ou une face libre 25. Ce bord ou cette face, annulaire, définit, vers la paroi transversale 12, une ouverture rétrécie 24.The branches 21, 22 are connected by an edge or a face free 25. This annular edge or face defines, towards the transverse wall 12, a narrowed opening 24.

On notera ici que la différence de diamètre entre l'ouverture 24 et la branche inclinée 22 au voisinage de l'arrondi 23 est assez faible et permet la mise en place et le maintien du joint d'étanchéité 3. Par ailleurs le fond du bouchon 2 limité périphériquement par la branche 22 et l'arrondi 23 forme une sorte de chambre utilisée pour la compression du joint 3 lorsque celui-ci est comprimé par suite du serrage sur le col 4.It will be noted here that the difference in diameter between the opening 24 and the inclined branch 22 in the vicinity of the rounding 23 is quite low and allows the establishment and maintaining the seal 3. Furthermore, the bottom of plug 2 limited peripherally by branch 22 and rounding 23 forms a kind of chamber used for compression of the joint 3 when the latter is compressed by following tightening on the neck 4.

Dans la réalisation considérée, la face interne 20 de la paroi transversale 12 est plane.In the embodiment considered, the internal face 20 of the transverse wall 12 is flat.

Le joint d'étanchéité 3 est lui aussi réalisé en matière plastique, celle-ci étant toutefois capable d'être déformée élastiquement. The seal 3 is also made of material plastic, this being however capable of being deformed elastically.

Ce joint 3 est réalisé séparément du bouchon 2, par injection, compression, ou autrement.This seal 3 is produced separately from the plug 2, by injection, compression, or otherwise.

Le joint 3 comporte en premier lieu un bourrelet périphérique 26, déformable élastiquement, avec lequel peut coopérer le col 4 du récipient.The seal 3 comprises firstly a bead peripheral 26, elastically deformable, with which can cooperate the neck 4 of the container.

Le joint 3 comporte en deuxième lieu une paroi transversale 27 à la périphérie de laquelle se trouve le bourrelet 26.The gasket 3 secondly comprises a transverse wall 27 at the periphery of which is the bead 26.

Le joint 3 comporte en troisième lieu un épaulement périphérique 31 sur lequel on reviendra par la suite.The joint 3 has thirdly a shoulder peripheral 31 to which we will return later.

Le joint d'étanchéité 3, une fois réalisé, est rapporté dans le bouchon 2. Il est maintenu associé au bouchon au moyen de la saillie 19 coopérant avec l'épaulement 31. Dans cette situation, il est ménagé entre la face interne 20 de la paroi transversale 12 et la face 28 en regard, un espace 29. Lorsque le bouchon avec joint d'étanchéité 1 est monté et serré sur le col 4, le joint 3 peut venir se loger dans l'espace 29 en question, celui-ci disparaissant en tout ou partie. Cet espace 29 est formé par la chambre du fond du bouchon, ainsi qu'il a été mentionné plus haut.The seal 3, once made, is attached in cap 2. It is kept associated with the cap at means of the projection 19 cooperating with the shoulder 31. In this situation, it is formed between the internal face 20 of the transverse wall 12 and the facing face 28, a space 29. When the cap with seal 1 is fitted and tightened on the neck 4, the seal 3 can be accommodated in the space 29 in question, this disappearing altogether or part. This space 29 is formed by the chamber at the bottom of the cap, as mentioned above.

Pour le montage du joint d'étanchéité 3 dans le bouchon 2, on force le joint 3 à passer au delà de la saillie 19 par l'ouverture rétrécie 24, ce qui est rendu possible par suite de la souplesse et de la faiblesse de l'épaisseur axiale de l'épaulement 31. Une fois ce passage en force réalisé, le joint 3 est maintenu dans une situation que l'on peut qualifier d'épaulée mais flottante, bien visible sur la figure 4. L'épaulement 31 a alors repris la configuration qu'il présentait avant le passage en force.For mounting the gasket 3 in the plug 2, the seal 3 is forced to pass beyond the projection 19 by the narrowed opening 24, which is made possible by due to the flexibility and the weakness of the thickness axial of the shoulder 31. Once this passage in force achieved, the seal 3 is maintained in a situation that we can qualify as shouldered but floating, clearly visible in Figure 4. The shoulder 31 then resumed the configuration it presented before the entry into force.

On décrit maintenant plus spécialement le joint d'étanchéité 3 lorsqu'il est au repos, épaulé mais flottant, c'est à dire lorsque le bouchon avec joint 1 n'est pas encore monté ou du moins pas encore serré par le col 4 du récipient.We now describe more specifically the joint sealing 3 when it is at rest, supported but floating, i.e. when the cap with seal 1 is not yet mounted or at least not yet tightened by the container neck 4.

Dans cette situation, la face 28 de la paroi transversale 27 du joint d'étanchéité 3 est sensiblement plane. Cela est vrai également au droit du bourrelet 26. Cette configuration découle du procédé même de fabrication du joint (plan de moule). Le bourrelet 26 est en saillie du coté de la face 30 du joint 3 destinée à être tournée vers le col 4 du récipient.In this situation, the face 28 of the transverse wall 27 of the seal 3 is substantially planar. That is also true to the right of the bead 26. This configuration results from the very manufacturing process of the joint (mold plane). The bead 26 projects from the side of the face 30 of the joint 3 intended to be turned towards the neck 4 of the container.

Par ailleurs, l'épaulement 31, annulaire, entoure à l'extérieur le bourrelet 26 et est disposé dans le prolongement de la paroi transversale 27. Cet épaulement 31 est destiné à coopérer ou interférer avec la saillie 19, plus précisément sa branche inclinée 22. Cet épaulement 31 est souple, d'une épaisseur e faible pour permettre un montage aisé par passage en force dans l'ouverture 24. Grâce à cette disposition constructive, le joint d'étanchéité 3 est maintenu dans le bouchon 2 de manière à ne pas s'en dissocier de façon intempestive.Furthermore, the annular shoulder 31 surrounds at outside the bead 26 and is arranged in the extension of the transverse wall 27. This shoulder 31 is intended to cooperate or interfere with the projection 19, more precisely its inclined branch 22. This shoulder 31 is flexible, thin and thin to allow easy assembly by force passage in opening 24. Thanks to this constructive arrangement, the joint seal 3 is held in the plug 2 so as to do not untimely dissociate from it.

Naturellement, le diamètre annulaire de l'épaulement 31 est en relation avec le diamètre annulaire entre l'ouverture rétrécie 24 et le grand diamètre de l'espace 29 à l'endroit où la branche 22 est reliée à l'arrondi 23.Naturally, the annular diameter of the shoulder 31 is in relation to the annular diameter between the opening narrowed 24 and the large diameter of the space 29 at the place where the branch 22 is connected to the rounding 23.

Par suite du procédé de fabrication du joint employé, la face latérale extérieure 35 de l'épaulement 31 est cylindrique ou légèrement tronconique, la grande base se trouvant du côté de la face 28.As a result of the manufacturing process of the seal used, the outer lateral face 35 of the shoulder 31 is cylindrical or slightly tapered, the large base is on the side of the face 28.

Une fois le joint d'étanchéité 3 monté dans le bouchon 2, ainsi qu'il vient d'être mentionné, la face ou le bord libre saillant 32 du bourrelet 26 -placé dans un plan transversal par rapport à l'axe 11- et opposé à la face 28 est disposé sensiblement dans le plan de la face ou du bord libre 25 de la saillie 19. Once the seal 3 is mounted in the plug 2, as just mentioned, the face or the edge free projection 32 of the bead 26 -placed in a plane transverse to the axis 11- and opposite the face 28 is arranged substantially in the plane of the face or edge free 25 of projection 19.

Le cas échéant, la face au bord saillant 32 du bourrelet 26 peut être située légèrement au delà du plan du bord ou face 25, du coté opposé à la paroi transversale 12 (figures 9 à 11).Where appropriate, the face with the protruding edge 32 of the bead 26 can be located slightly beyond the edge plane or face 25, on the side opposite to the transverse wall 12 (FIGS. 9 to 11).

L'espace 29 précédemment mentionné est tel qu'il est apte en premier lieu à permettre la déformation appropriée du joint d'étanchéité 3 par suite du montage et du serrage du bouchon avec joint 1 sur le col 4 du récipient.The space 29 previously mentioned is as it is suitable in the first place to allow the appropriate deformation of the seal 3 as a result of mounting and tightening the cap with seal 1 on the neck 4 of the container.

D'autre part et de surcroít, l'espace 29 est apte à permettre l'application et l'appui du joint d'étanchéité 3, par sa face 28, contre la face interne 20 du bouchon 2, une fois que le bouchon avec joint 1 est monté et serré sur le col 4. Dans la réalisation considérée ici, ces deux faces 20, 28 sont principalement ou substantiellement planes.On the other hand and in addition, the space 29 is suitable for allow the application and support of the seal 3, by its face 28, against the internal face 20 of the plug 2, a once the cap with seal 1 is fitted and tightened on the col 4. In the embodiment considered here, these two faces 20, 28 are mainly or substantially planar.

Dans la réalisation considérée, le bourrelet 26 a, en section droite transversale, une forme générale de V à pointe tronquée ou arrondie.In the embodiment considered, the bead 26 a, in cross section, a general form of V to truncated or rounded tip.

Ce bourrelet 26 est limité vers l'extérieur par une face 33, sensiblement cylindrique ou tronconique correspondant sensiblement à l'ouverture 24. Le bourrelet 26 est limité vers l'intérieur par une face 34 ayant sensiblement une forme tronconique. Le diamètre de ce tronc de cône le plus proche de la paroi 27 est le petit diamètre tandis que le grand diamètre est destiné à être tourné vers le col 4 du récipient. Par conséquent, le bourrelet 26 et l'épaulement 31 sont orientés inclinés dans le même sens.This bead 26 is limited towards the outside by a face 33, substantially cylindrical or frustoconical corresponding substantially at the opening 24. The bead 26 is limited inward by a face 34 having substantially a frustoconical shape. The diameter of this trunk of cone the most close to wall 27 is the small diameter while the large diameter is intended to be turned towards the neck 4 of the container. Consequently, the bead 26 and the shoulder 31 are oriented inclined in the same direction.

Dans la réalisation qui vient d'être décrite, le joint d'étanchéité 3 comporte un seul bourrelet 26.In the embodiment which has just been described, the seal sealing 3 comprises a single bead 26.

Mais, dans d'autres réalisations possibles, le joint d'étanchéité 3 comporte également un second bourrelet annulaire, placé à l'intérieur du premier bourrelet 26 et légèrement écarté de lui radialement.But, in other possible embodiments, the joint sealing 3 also includes a second bead annular, placed inside the first bead 26 and slightly away from him radially.

Une fois le bouchon avec joint 1 monté et serré sur le col 4 du récipient, le joint d'étanchéité 3 est déformé, comparativement à sa situation de repos. Cette déformation est telle que le joint d'étanchéité 3 est appliqué en appui sur la face interne 20 du bouchon 2. D'autre part, le bourrelet 26 -le cas échéant le second bourrelet lorsque celui ci est prévu- est écrasé et déformé par la partie extrême libre du col 4. Comme il a été indiqué plus haut, le fond du bouchon 2 forme une chambre pour la compression du joint 3.Once the cap with seal 1 mounted and tightened on the neck 4 of the container, the seal 3 is deformed, compared to his resting situation. This distortion is such that the seal 3 is applied in support on the internal face 20 of the plug 2. On the other hand, the bead 26 -the second bead if necessary this one is planned - is crushed and deformed by the part free extremity of the neck 4. As indicated above, the bottom of the plug 2 forms a chamber for compression seal 3.

Il est à noter que le bouchon proprement dit 2 est apte non seulement à recevoir un joint rapporté tel que 3, épaulé et flottant une fois monté, comme décrit précédemment, mais aussi, alternativement et éventuellement un joint réalisé in situ.It should be noted that the plug proper 2 is suitable not only to receive an attached joint such as 3, shouldered and floating once mounted, as described above, but also, alternately and possibly a joint made in situ.

Par conséquent, le bouchon 2 est à ce titre polyvalent. Symétriquement, le joint 3 peut être rapporté sur différentes formes de coques de bouchon 2.Consequently, the plug 2 is therefore versatile. Symmetrically, the joint 3 can be attached to different forms of cap shells 2.

Les figures 6 à 11 représentent différentes variantes non limitatives de formes de joint 3.Figures 6 to 11 show different variants not limitation of joint shapes 3.

Dans le cas de la figure 6, la face 34 est fortement inclinée sur l'axe 11 et arrondie vers la paroi 27. Le bourrelet 26 vient être appliqué vers le bord 8.In the case of FIG. 6, the face 34 is strongly inclined on the axis 11 and rounded towards the wall 27. The bead 26 is applied towards edge 8.

Dans le cas de la figure 7, il est prévu un premier bourrelet 26 et un second bourrelet 36 placé à l'intérieur du premier bourrelet 26 et écarté de lui radialement. Les deux bourrelets 26 et 36 sont disposés sensiblement symétriquement l'un par rapport à l'autre, l'ensemble ayant une forme générale de pseudo W. Le bourrelet 26 est "attaqué" par le bord 8. Le bourrelet 36 par le bord opposé 37.In the case of Figure 7, there is provided a first bead 26 and a second bead 36 placed inside of the first bead 26 and spaced from it radially. The two beads 26 and 36 are arranged substantially symmetrically with respect to each other, the assembly having a general form of pseudo W. The bead 26 is "attacked" by the edge 8. The bead 36 by the opposite edge 37.

La figure 8 représente une variante du mode de réalisation représenté en figure 7, dans lequel les deux bourrelets 26 et 36 sont dyssymétriques. En l'occurrence, le bourrelet 36 est plus large que le bourrelet 26.FIG. 8 represents a variant of the embodiment shown in Figure 7, wherein the two beads 26 and 36 are dyssymmetric. In this case, the bead 36 is wider than the bead 26.

la figure 9 représente une variante du mode de réalisation représenté en figure 8 dans lequel le bourrelet 36 comporte une extension 38 dirigée axialement, à l'opposé de la paroi 27, venant s'appliquer contre la face interne 5 du col 4.FIG. 9 represents a variant of the embodiment shown in Figure 8 wherein the bead 36 includes an extension 38 directed axially, opposite the wall 27, which is applied against the internal face 5 of the neck 4.

La figure 10 représente une variante du mode de réalisation représenté en figure 7. Ici les deux bourrelets 26 et 36 sont nettement plus écartés que dans le cas de la figure 7, leur forme étant davantage celle d'un U renversé que d'un V renversé.FIG. 10 represents a variant of the embodiment shown in Figure 7. Here the two beads 26 and 36 are much further apart than in the case of FIG. 7, their shape being more that of an inverted U than a V reversed.

La figure 11 est une variante de la figure 10 dans laquelle un troisième bourrelet 39 est pris entre les bourrelets 26 et 36.Figure 11 is a variant of Figure 10 in which a third bead 39 is taken between the beads 26 and 36.

Claims (14)

Bouchon avec joint d'étanchéité dans lequel : le bouchon (2) est en matière plastique suffisamment rigide et comporte d'une part une paroi transversale (12) et une jupe cylindrique annulaire (13) attenante, pourvue intérieurement de filets de vissage (15) destinés à coopérer avec des filets de vissage (9) complémentaires du col (4) d'un récipient, d'autre part une saillie annulaire interne (19), saillant de la face interne (14) de la jupe au voisinage de la paroi transversale (12), cette saillie (19) ayant pour fonction de participer au maintien d'un joint d'étanchéité (3) ; le joint d'étanchéité (3), en matière plastique capable d'être déformée élastiquement, comporte en premier lieu un bourrelet périphérique (26), déformable élastiquement, avec lequel peut coopérer le bord du col (4) du récipient pour l'étanchéité, en deuxième lieu une paroi transversale (27) à la périphérie de laquelle se trouve le bourrelet (26) ; et en troisième lieu un épaulement annulaire (31) souple de maintien du joint, coopérant avec la saillie annulaire du bouchon proprement dit ; le joint d'étanchéité (3), lorsqu'il est réalisé, est rapporté dans le bouchon (2) et maintenu flottant au moyen de la saillie annulaire interne (19) coopérant avec l'épaulement (31) de manière que soit ménagé entre la face interne (20) de la paroi transversale (12) du bouchon et la face (28) en regard du joint d'étanchéité (3) un espace (29) de forme générale cylindrique aplatie dans lequel peut venir se loger le joint (3) une fois le bouchon avec joint d'étanchéité (1) monté et serré sur le col (4) du récipient. Cap with seal in which: the plug (2) is of sufficiently rigid plastic material and comprises on the one hand a transverse wall (12) and an adjoining annular cylindrical skirt (13), provided internally with screw threads (15) intended to cooperate with screw threads (9) complementary to the neck (4) of a container, on the other hand an internal annular projection (19), projecting from the internal face (14) of the skirt in the vicinity of the transverse wall (12), this projection ( 19) having the function of participating in the maintenance of a seal (3); the seal (3), made of plastic material capable of being elastically deformed, firstly comprises a peripheral bead (26), elastically deformable, with which the edge of the neck (4) of the container can cooperate for sealing , secondly a transverse wall (27) at the periphery of which is the bead (26); and thirdly a flexible annular shoulder (31) for holding the seal, cooperating with the annular projection of the plug proper; the seal (3), when produced, is attached to the plug (2) and kept floating by means of the internal annular projection (19) cooperating with the shoulder (31) so that is formed between the internal face (20) of the transverse wall (12) of the plug and the face (28) opposite the seal (3) a space (29) of generally flattened cylindrical shape in which the seal can be housed ( 3) once the cap with seal (1) mounted and tightened on the neck (4) of the container. Bouchon avec joint d'étanchéité selon la revendication 1 dans lequel le joint d'étanchéité (3), au repos, est limité, du coté de la paroi transversale (20) par une face (28) sensiblement plane ; le bourrelet (26) est en saillie du coté de la face (30) du joint (3) opposée à la face (28), la face (30) étant destinée à être tournée vers le col (4) du récipient ; l'épaulement annulaire souple (31) entourant à l'extérieur le bourrelet (26), est disposé dans le prolongement de la paroi transversale (27) du joint et est destiné à coopérer avec la saillie (19) annulaire interne du bouchon pour assurer le maintien du joint d'étanchéité (3), celui-ci étant ainsi maintenu de façon épaulée et flottante ; cet épaulement (31) présentant une souplesse et une épaisseur axiale aptes à permettre le montage aisé.Cap with seal according to claim 1 in which the seal (3), at rest, is limited, on the side of the transverse wall (20) by a face (28) substantially planar; the bead (26) is projecting on the side of the face (30) of the seal (3) opposite the face (28), the face (30) being intended to be turned towards the neck (4) of the container; the flexible annular shoulder (31) surrounding the outside the bead (26), is arranged in the extension of the transverse wall (27) of the seal and is intended to cooperate with the annular projection (19) internal plug to maintain the seal sealing (3), the latter being thus maintained so shouldered and floating; this shoulder (31) having a flexibility and an axial thickness suitable for allowing easy assembly. Bouchon avec joint d'étanchéité selon l'une quelconque des revendications 1 ou 2 dans lequel la face ou le bord libre (32) saillant du bourrelet (26) opposé à la face transversale du joint est disposé sensiblement dans le plan de la face ou du bord libre (25) saillant de la saillie (19) annulaire interne du bouchon.Cap with seal according to any one claim 1 or 2 wherein the face or the edge free (32) projecting from the bead (26) opposite the face transverse joint is arranged substantially in the plane of the face or free edge (25) projecting from the projection (19) inner ring of the plug. Bouchon avec joint d'étanchéité selon l'une quelconque des revendications 1 à 3 dans lequel l'espace (29) entre le bouchon et le joint d'étanchéité est tel qu'il est apte d'une part à permettre la déformation appropriée du joint d'étanchéité (3) par suite du montage et du serrage du bouchon avec joint (1) sur le col (4) du récipient, d'autre part à permettre l'application et l'appui du joint (3) contre la face interne (20,14) du bouchon (2), une fois le bouchon monté et serré sur le col (4) du récipient.Cap with seal according to any one of claims 1 to 3 in which the space (29) between the cap and seal is as it is fit on the one hand to allow the appropriate deformation of the joint sealing (3) as a result of mounting and tightening the cap with seal (1) on the neck (4) of the container, on the other part to allow the application and the support of the joint (3) against the internal face (20,14) of the plug (2), once the cap mounted and tightened on the neck (4) of the container. Bouchon avec joint d'étanchéité selon l'une quelconque des revendications 1 à 4 dans lequel le bourrelet (26) a, en section droite transversale, un profil en forme générale de V, ou de U, ou de W, ou de pseudo V -notamment à pointe tronquée ou arrondie -, ou de pseudo U, ou de pseudo W.Cap with seal according to any one of claims 1 to 4 in which the bead (26) has, in cross section, a profile in general shape of V, or of U, or of W, or of pseudo V - notably pointed truncated or rounded -, or pseudo U, or pseudo W. Bouchon avec joint d'étanchéité selon l'une quelconque des revendications 1 à 5 dans lequel le bourrelet (26) est limité vers l'extérieur par une face sensiblement tronconique ou cylindrique (33) correspondant sensiblement à l'ouverture rétrécie (24) formée par la saillie (19) interne du bouchon ; et, vers l'intérieur par une face (34), sensiblement tronconique dont le diamètre le plus proche de la paroi transversale (27) est le petit diamètre, le grand diamètre étant destiné à être tourné vers le col (4) du récipient.Cap with seal according to any one of claims 1 to 5 in which the bead (26) is bounded outward by a substantially face frustoconical or cylindrical (33) corresponding substantially at the narrowed opening (24) formed by the projection (19) internal plug; and inward by one side (34), substantially frustoconical with the largest diameter close to the transverse wall (27) is the small diameter, the large diameter being intended to be turned towards the neck (4) of the container. Bouchon avec joint d'étanchéité selon l'une quelconque des revendications 1 à 6 dans lequel le joint d'étanchéité (3) comporte, également, un second bourrelet annulaire (36) placé à l'intérieur du premier bourrelet annulaire (26) et légèrement écarté de lui radialement.Cap with seal according to any one of claims 1 to 6 in which the seal (3) also includes a second annular bead (36) placed inside the first annular bead (26) and slightly away from him radially. Bouchon avec un joint d'étanchéité selon l'une quelconque des revendications 1 à 7 dans lequel la saillie interne (19) a, en section droite transversale, une forme générale de V, ou de U, ou de pseudo V -notamment à pointe tronquée-, ou de pseudo U, renversé, la saillie (19) comportant une branche (21) sensiblement transversale par rapport à l'axe principal (11) du bouchon et une branche (22) légèrement inclinée sur cet axe (11).Cap with a seal according to one any of claims 1 to 7 wherein the projection internal (19) has, in cross section, a shape general of V, or of U, or of pseudo V - notably with point truncated-, or pseudo U, overturned, the projection (19) comprising a branch (21) substantially transverse by relative to the main axis (11) of the plug and a branch (22) slightly inclined on this axis (11). Bouchon avec un joint d'étanchéité selon l'une quelconque des revendications 1 à 8 qui comporte en outre une bague d'inviolabilité (10) attenante au bord libre (16) de la jupe (13) opposé à la paroi transversale (12), la liaison (17) entre la jupe (13) et la bague d'inviolabilité (10) -par des ponts, des découpes, une plus faible épaisseur ou autre- étant de moindre résistance pour pouvoir être fracturée lors de la première ouverture du bouchon avec un joint (1), la bague d'inviolabilité (10) comportant, en outre, vers l'intérieur, des moyens en saillie (18) -bourrelet, patte, saillie ou autre- aptes à interférer avec une saillie annulaire correspondante prévue sur le col (4) du récipient.Cap with a seal according to one any of claims 1 to 8 which further comprises a tamper-evident ring (10) adjoining the free edge (16) of the skirt (13) opposite the transverse wall (12), the connection (17) between the skirt (13) and the tamper-evident ring (10) -by bridges, cutouts, lower thickness or other- being of least resistance for be able to be fractured during the first opening of the cap with a seal (1), the tamper-evident ring (10) further comprising inwardly means projection (18) - bead, lug, projection or other suitable for interfere with a corresponding annular projection provided on the neck (4) of the container. Bouchon avec joint d'étanchéité selon la revendication 9 dans lequel la bague d'inviolabilité (10) est elle même sécable transversalement en au moins un endroit et s'ouvre au moment de la première ouverture du bouchon.Cap with seal according to claim 9 in which the tamper-evident ring (10) is itself divisible transversely in at least one place and opens when the cap is opened for the first time. Bouchon avec joint d'étanchéité selon la revendication 9 dans lequel la bague d'inviolabilité (10) n'est pas elle même sécable transversalement.Cap with seal according to claim 9 in which the tamper-evident ring (10) is not even divisible transversely. Bouchon avec un joint d'étanchéité selon la revendication 10 dans lequel la bague d'inviolabilité (10) est reliée à la jupe par au moins une liaison non frangible.Cap with a seal according to the claim 10 wherein the tamper evident ring (10) is connected to the skirt by at least one connection not frangible. Procédé de réalisation d'un bouchon selon l'une quelconque des revendications 1 à 12 dans lequel on réalise d'abord séparément le bouchon (2) et le joint d'étanchéité (3), par injection, compression ou autre et ensuite on met en place et on associe le joint d'étanchéité (3) dans et avec le bouchon (2) en forçant le joint d'étanchéité (3) à passer au delà de la saillie interne (19) du bouchon, cette opération étant rendue possible par suite de la forme et de la constitution de l'épaulement combinée à la forme du bouchon proprement dit, le joint d'étanchéité (3) étant alors maintenu épaulé mais flottant.Method for producing a plug according to one any of claims 1 to 12 in which one carries out first separately the plug (2) and the seal (3), by injection, compression or other and then we put in place and we associate the seal (3) in and with the plug (2) by forcing the seal (3) to pass beyond the internal projection (19) of the cap, this operation being made possible by the form and the constitution of the shoulder combined with the shape of the plug itself, the seal (3) being then kept supported but floating. Ensemble comprenant d'une part un récipient pour un certain contenu, le dit récipient étant pourvu d'un col (4) avec un filetage externe et, le cas échéant, une saillie annulaire destinée à coopérer avec une bague d'inviolabilité (10) ; d'autre part un bouchon avec un joint d'étanchéité (1) selon l'une des revendications 1 à 12 ; le bouchon avec joint d'étanchéité (1) étant monté et serré sur le col (4) du récipient ; le joint d'étanchéité (3) étant, par rapport à sa situation au repos, déformé pour venir être appliqué en appui sur la face interne (20) du bouchon, le bourrelet (26) du joint étant écrasé et déformé par la partie extrême libre du col (4) du récipient.Assembly comprising on the one hand a container for a certain content, said container being provided with a neck (4) with external thread and, if necessary, a projection annular intended to cooperate with a ring inviolability (10); on the other hand a cap with a seal (1) according to one of claims 1 to 12; the plug with seal (1) being mounted and tight on the neck (4) of the container; the seal (3) being, in relation to its situation at rest, deformed to come to be applied resting on the internal face (20) of the plug, the bead (26) of the seal being crushed and deformed by the free end of the neck (4) of the container.
EP99402262A 1998-09-16 1999-09-15 Closure cap with seal, method for making the same and assembly comprising a container and the closure with seal Withdrawn EP0987187A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9811569A FR2783240B1 (en) 1998-09-16 1998-09-16 CAP WITH A SEALING GASKET, PROCESS FOR MAKING SUCH A CAP AND ASSEMBLY INCLUDING A CONTAINER AND THE SAID PLUG WITH A SEAL
FR9811569 1998-09-16

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EP0987187A1 true EP0987187A1 (en) 2000-03-22

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EP (1) EP0987187A1 (en)
CA (1) CA2344206A1 (en)
FR (1) FR2783240B1 (en)
WO (1) WO2000015517A1 (en)

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DE10129991A1 (en) * 2001-06-08 2002-12-19 Alcoa Deutschland Gmbh Bottle cap has internal seal with section which can be removed
EP1329393A3 (en) * 2001-11-27 2003-08-06 Owens-Illinois Closure Inc., Plastic closure, container equipped with it and method of manufacture
US8596477B2 (en) 2005-12-28 2013-12-03 Silgan White Cap LLC Retortable package with plastic closure cap
EP2094483B1 (en) * 2006-10-24 2014-10-01 Amcor Flexibles Capsules France Stopper capsule with multilayer joint
EP1939103A1 (en) * 2006-12-28 2008-07-02 Guala Closures S.p.A. Sealing liner for a closure
WO2014204068A1 (en) * 2013-06-18 2014-12-24 Ctk Co., Ltd Cap for cosmetic case having active type sealing structure
WO2024052002A1 (en) * 2022-09-09 2024-03-14 L'oreal Cosmetic product packaging assembly comprising a container made of cellulose material and a closure element
FR3139556A1 (en) * 2022-09-09 2024-03-15 L'oreal Cosmetic product packaging assembly comprising a container made of cellulosic material and a sealing element

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WO2000015517A1 (en) 2000-03-23
US6581793B1 (en) 2003-06-24
FR2783240A1 (en) 2000-03-17
CA2344206A1 (en) 2000-03-23
FR2783240B1 (en) 2000-12-08

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