EP1580136A1 - Plugging device of a collar of a container, container equipped with such a device and manufacturing process of such a device - Google Patents

Abstract

The device has a sealing disc (20) delimiting a support surface (21) on a locking ring of the neck of a container and a support surface (22) pressing a stopper (40). The respective contact properties of the surfaces cause, when the stopper applies pressure (P) on the disc, a connection by rotation of the disc and the neck at the surface (21) level and a contact sliding between the disc and the stopper at the surface (22) level. The sealing disc (20) delimits the impermeable support surface (21) on a side to be turned towards the locking ring of the neck of the container and delimits the support surface (22) on an opposite side. Independent claims are also included for the following: (A) a glass container (B) a process of manufacturing of a corking device.

Description

The present invention relates to a device for capping the neck of a container and a container equipped with a such a device, as well as a method of manufacturing such device. The invention relates in particular to glass containers containing for example a drink alcohol or drug solution.

When trying to ensure a good seal of a container by such a closure device, in particular when the container contains a liquid, or more generally a product particularly sensitive to oxidation and / or when the container is made of glass or analogous, it is known to use a sealing disc which rests in simple support on the rim of the collar around from which a removable closure cap is attached. This cap, for example screwed around the neck, thus presses the sealing disc against the rim of the neck. Insofar where the closure device must allow uncoupling and successive refilling of the container, it is generally provided that the sealing disc is retained inside plug, near its bottom wall. An example such a closure device is given by US-B-4,519,518.

When the neck of the container is made of glass or a similar fragile material, the surface condition of the drinking water of the neck often presents asperities, such as microcracks or microcracks. These asperities, even these splinters are all the more numerous or marked when the container is a recycling bottle, that is to say a bottle that has already been served and has been submitted to cleaning before reuse. When the cork press the sealing disc against the rim of the the asperities may tear or cut material of the disc, thus altering the container.

The object of the present invention is to propose a capping device and a container provided with such device, for which the risk of damage to the sealing disc are diminished in order to improve the tightness of the container, even when the surface condition drinking water is impaired, especially for containers in glass or similar brittle material.

For this purpose, the subject of the invention is a device for capping a container neck, in particular glass, with a removable collar closure cap and a sealing member adapted to be plated in waterproof support on the mouth of the neck by the stopper, characterized in that the sealing piece defines, on its side intended to be turned towards the drinking of the neck, a first sealing surface on the rim and, on the side opposite, a second pressing surface pressing the plug, the respective contact properties of these first and second bearing surfaces being able to cause, when the application of a pressure force on the part sealing by the plug, a connection in rotation of the sealing piece and collar at the level of the first support surface and a sliding contact between the piece sealing and plug at the second surface support.

The subject of the invention is also a container, including glass, with a collar and equipped with a closure device of this collar comprising a stopper removable collar closure and a sealing piece adapted to be pressed against the rim of the neck, characterized the coefficient of friction between the sealing piece and the neck drinking is strictly greater than the coefficient of friction between the piece sealing and plug.

In the device and the container according to the invention, the sealing piece, for example a disc, is, at level of its face in tight contact with the drinking, bound in rotation with the neck when the cap presses the disc against the rim of the neck, the plug being movable in sliding support on the opposite side of the disc. The presence asperities or splinters on the surface of the drinking water therefore not significantly damage the drive sealing.

According to an advantageous characteristic of the device capping or container equipped with this device, the cap has a cap and a piece overall tubular open at at least one of its axial ends, adapted to be reported both around the neck of the container removably and inside the cap in a fixed manner and provided on its inner face with means axial support of the sealing piece.

According to this feature, the device capping therefore comprises at least three elements to assemble, namely the cap, the sealing piece, for example a sealing disc, and the tubular piece forming a axial support for the sealing piece, this piece tubular and the plug forming at least in part, to the assembled state, the pressing cap of the piece sealing against the neck. Since the means for supporting the sealing part are carried by the tubular piece and not directly by the cap, the latter is more easily molded and especially demolded, no extensive undercut area being necessary. The outer face of the cap is then not altered by sinkholes, thereby guaranteeing its external aesthetic, for example by covering it a decorative covering or covering.

• la face extérieure de la pièce tubulaire porte des premiers moyens de blocage en translation axiale et des premiers moyens de blocage en rotation associés respectivement à des seconds moyens de blocage en translation et à des seconds moyens de blocage en rotation correspondants portés par la face intérieure du bouchon ;
• les premiers moyens de blocage en translation et/ou les premiers moyens de blocage en rotation sont adaptés pour coopérer par complémentarité de formes avec respectivement les seconds moyens de blocage en translation et les seconds moyens de blocage en rotation ;
• les premiers moyens de blocage en translation présentent, en coupe longitudinale, un profil en bosses et en creux et/ou les premiers moyens de blocage en rotation présentent, en coupe transversale, un profil en bosses et en creux ;
• les moyens de support axial définissent au moins une surface de retenue axiale de la pièce d'étanchéité, espacée d'une des extrémités de la pièce tubulaire d'une distance strictement inférieure à l'épaisseur axiale de la pièce d'étanchéité lorsque la pièce tubulaire est à l'extérieur du bouchon ;
• la pièce d'étanchéité comporte au moins, du côté tourné vers le buvant du col lorsque le dispositif bouche le récipient, une première couche étanche et, du côté opposé, une seconde couche déformable élastiquement et de manière réversible ;
• le bouchon comporte un élément élastiquement déformable, solidaire d'une partie du bouchon et adapté pour s'appuyer contre la pièce d'étanchéité ;
• le dispositif de bouchage est pourvu de moyens témoins de la première utilisation du dispositif, adaptés pour coopérer avec une partie correspondante du col lors du premier débouchage du récipient et l'amplitude de déformation élastique de la seconde couche de la pièce d'étanchéité et/ou l'amplitude de déformation élastique de l'élément élastiquement déformable du bouchon sont supérieures au jeu entre ces moyens témoins et cette partie du col.

According to other characteristics of this device or of this container, taken individually or in any technically possible combination:

• the outer face of the tubular piece carries first locking means in axial translation and first rotational locking means associated respectively with second translation locking means and second corresponding rotational locking means carried by the inner face of the cap;
• the first translation locking means and / or the first rotational locking means are adapted to cooperate by complementary shapes with respectively the second translation locking means and the second rotation locking means;
• the first locking means in translation have, in longitudinal section, a profile in bosses and recesses and / or the first rotation locking means have, in cross section, a profile in bosses and recesses;
• the axial support means define at least one axial retaining surface of the sealing piece, spaced from one end of the tubular piece by a distance strictly smaller than the axial thickness of the sealing piece when the piece tubular is outside the cap;
• the sealing member comprises at least, on the side facing the rim of the neck when the device closes the container, a first sealed layer and, on the opposite side, a second elastically deformable layer and reversibly;
• the cap comprises an elastically deformable element secured to a portion of the cap and adapted to bear against the sealing piece;
• the closure device is provided with means of witnessing the first use of the device, adapted to cooperate with a corresponding part of the neck during the first uncoupling of the container and the elastic deformation amplitude of the second layer of the sealing piece and / or the amplitude of elastic deformation of the elastically deformable element of the plug are greater than the clearance between these control means and this part of the neck.

a) on place la pièce d'étanchéité à l'intérieur de la pièce tubulaire, en appui axial sur les moyens de support, et

b) on introduit et on immobilise la pièce tubulaire à l'intérieur du capuchon de manière à obtenir un bouchon amovible de fermeture du col, adapté pour plaquer la pièce d'étanchéité contre le buvant du col.

The invention further relates to a method of manufacturing a closure device of a container neck, in particular made of glass, in which there is a sealing piece adapted to be pressed against the water collar, characterized in that it also has a cap and a generally tubular part open at at least one of its axial ends and provided on its inner face, means for axial support of the workpiece. sealing and in that the method comprises the steps during which:

a) placing the sealing piece inside the tubular piece, axially pressing on the support means, and

b) the tubular piece is introduced and immobilized inside the cap so as to obtain a removable closure cap for the neck, adapted to press the sealing piece against the rim of the neck.

The method according to the invention thus makes it possible quick and easy assembly of the closure device consisting of the cap, the sealing piece and the reported tubular part, this device being thereafter just as easily manipulated to be reported from removable way, for example screwed around the neck of the container. The different operations of the process being implemented following only movements substantially axial, this method is in practice automated, without compromising its quality of implementation.

According to an advantageous characteristic of this process, the tubular part used is a sleeve open to its two axial ends, step a) of setting up the sealing piece is performed before step b) of introduction and immobilization of this sleeve and, during step a), the sealing piece is placed in axial bearing on the support means being introduced into the sleeve from its axial end that will be closest the bottom wall of the cap at the end of step b). As the sleeve supports the sealing piece before this sleeve is not reported in the cap, the assembly does not does not require warping or curling of the piece since the latter is in a first time simply put on the means of support trained to the inside of the sleeve, then this sleeve is introduced inside the cap by being thereafter immobilized.

According to another advantageous characteristic of this process, when introducing the tubular piece to the inside of the cap, fold down towards the bottom wall of the cap a tongue protruding from the face inside the cap and adapted to be engaged with a corresponding axial stop of the neck during the first unclogging the container.

• la figure 1 est une vue éclatée en perspective d'un dispositif de bouchage selon l'invention ;
• la figure 2 est une coupe longitudinale du dispositif de la figure 1, assemblé autour d'un col d'un récipient ;
• la figure 3 est une vue à plus grande échelle du détail cerclé III sur la figure 2 ;
• la figure 4 est une vue partielle en coupe prise suivant le plan IV-IV indiqué sur la figure 2 ;
• les figures 5 à 7 sont des vues respectivement analogues aux figures 1 à 3, illustrant une variante du dispositif selon l'invention ; et
• la figure 8 est une vue analogue à la figure 2, représentant en partie une autre variante du dispositif selon l'invention.

The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings in which:

• Figure 1 is an exploded perspective view of a closure device according to the invention;
• Figure 2 is a longitudinal section of the device of Figure 1, assembled around a neck of a container;
• Figure 3 is an enlarged view of the circled detail III in Figure 2;
• Figure 4 is a partial sectional view taken along the plane IV-IV shown in Figure 2;
• Figures 5 to 7 are views respectively similar to Figures 1 to 3, illustrating a variant of the device according to the invention; and
• Figure 8 is a view similar to Figure 2, partly showing another variant of the device according to the invention.

Figures 1 and 2 show a device for capping 1 adapted to be attached removably on a neck 2 of a container 3, for example a bottle in glass or the like. The neck 2 has a shape overall cylindrical axis X-X.

The rest of the description will be oriented in whereas the terms 'superior' and 'high' correspond to a direction generally parallel to the axis X-X and moving away from the collar 2, that is to say a direction towards the upper part of Figures 1 and 2, while the terms "lower" and "lower" correspond to a opposite direction.

At its free end, the neck 2 defines a rim 4 where the liquid in the container is intended to be dumped. The outer face of the collar 2 is successively equipped, from top to bottom, with a helical net 5 and a ring 6, both radially projecting towards outside and came from matter with the collar. At the level of the transition between the lower end of this ring and the remainder of the neck 2 is formed a transverse shoulder 7 slightly inclined relative to a plane perpendicular to the X-X axis.

The closure device 1 essentially comprises three separate pieces, namely a cap 10, a disc 20 and a sleeve 30, intended to be assembled co-axially and then mounted on the neck 2. A the assembled state, the cap 10 and the sleeve 30 form a cap 40 in one piece, as explained below.

The cap 10 has a tubular shape, of axis X-X when the device 1 is attached to the collar 2 as on Figure 2. The cap is open at its end lower and is closed at its upper end by a bottom wall 11 on the periphery of which extends axially downward a tubular skirt 12 of axis X-X. The outer face of this skirt 12 has, in its part upper, a grooved surface 121 intended to facilitate the grip of the cap 10 by a user.

In its current part, the skirt 12 is provided, on its inner face, protruding tongue 122 possibly discontinuous and which extends both direction of the X-X axis and bottom 11. The free end of this tongue 122 is located just below the shoulder 7 of the neck 2 when the device 1 is in its reported configuration of Figure 2.

When the device is driven for the first time times up, tab 122 comes into engagement with the shoulder 7 then preventing the axial release of the lower part of the skirt 12 while the part top of this skirt is removed. For this purpose, a weakening line 123, shown in phantom dotted in Figures 1 and 2, is provided in the current part of the skirt 12, a little above the tongue 122. This line of weakness 123 is by example consisting of bridges of breakable material or several cuts or circumcircular cuts practiced in the skirt 12.

The cap 10 is made of a plastic material semi-rigid, such as polypropylene or polyethylene, polypropylene being preferred especially for reasons aesthetic. The cap is obtained by molding, the demoulding of the part being carried out without difficulty in the extent that the inner face 124 of the skirt 12 does not no extensive area of radial undercut. We note that, in the unmolded state of the cap 10, the tongue 122 extends into a position different from that represented in FIGS. 2 and 3, its free end being then directed downwards and not upwards for facilitate the demolding of the cap. This tongue must so to be plastically folded up when the assembly of the device 1, as will be explained more far.

The sleeve 30 consists of a body 31 globally Tubular X-X axis and open at both ends Axial. The sleeve is adapted to be introduced to inside the cap 10, being immobilized there so much axially in rotation about the X-X axis, and so have the cap 40.

More specifically, as shown in more detail on FIG. 3, the upper part of the outer face 32 of the sleeve has, in longitudinal section, a profile in bumps and recesses 321 substantially complementary to a profile in bumps and hollow corresponding 125 of the face 124 of the skirt 12 of the hood 10. The face outer sleeve 32 is for this purpose provided with a axial series of annular rods 322 radially projecting towards the outside, able to cooperate by complementarity of form with similar rushes of the inner face 124 of the skirt 12 to participate in the locking in axial translation the sleeve 30 relative to the cap 10.

The lower part of the outer face 32 of the sleeve 30 has, in cross-section, as shown in Figure 4, a profile in bumps and recesses 323 complementary to a profile in bumps and hollow corresponds 126 of the inner face 124 of the skirt 12. The outer face 32 of the sleeve 30 is provided for this purpose a plurality of striations 324 radially projecting towards outside and extending parallel to the X-X axis, distributed around the periphery of the sleeve. These streaks 324 are adapted to engage grooves complementary longitudinal lines of the inner face 124 of the cap and thus ensure the locking in rotation of the cap 30 with respect to the cap 10.

In addition, the upper end of the body 31 of the sleeve 30 forms a song 33 substantially complementary to the face Inside the zone 13 of junction between the bottom wall 11 and the skirt 12 of the cap. The end song upper 33 thus forms for the sleeve 30 a stop axial upwards with respect to the cap 10.

Similarly, the lower end of the body 31 of the sleeve 30 forms a substantially plane song 34 and adapted for support axially on a bulge 127 radially protruding inwardly of the inner face 124 of the skirt 12. The lower end edge 34 thus forms for the sleeve 30 an axial abutment with respect to at the hood 10.

The sleeve 30 also defines a face interior 35 provided, in its upper part, with a shoulder 351 and, in its lower part, a thread 352, both radially projecting inwards.

The net 352 is substantially complementary to the net outside 5 of the neck 2, so that the sleeve 30 is adapted to be screwed and unscrewed on the collar 2.

The shoulder 351 delimits an upper face 353 substantially planar and adapted to form an axial support down to the sealing disc 20. The distance axial x separating this face 353 from the end edge upper 33 is strictly less than the thickness axial axis of the disk 20 at rest, that is to say when the sleeve 30 is not reported inside the cap 10.

The sleeve 30 is made of a plastic material molded, such as polyethylene. Since the sleeve is intended to be fully introduced and therefore hidden inside the cap 10, its surface state outside is of little importance so the formation of sinkholes or other superficial defects is acceptable during its manufacture.

The sealing disk 20 delimits a surface lower 21 intended to be in simple support and in contact tight against the rim 4 of the collar 2 and a surface upper 22 to be pressed down by the bottom wall 11 of the cap 10. The underside of this bottom wall is provided with an annular bulge 111 axially projecting downwards and located at the base of the drinking when the device 1 is reported around the neck.

Regardless of the presence of the sleeve 30, the lower surface 21 of the disk 20 has a coefficient of friction, vis-à-vis the glass constituting the neck 2, which is strictly greater than the coefficient of friction between the upper surface 22 of the disc and the bulge 111. In this way, even when an intense pressure P is applied to the disk by the bottom 11 of the cap 10, the disc is rotatably connected to the neck 2 while the cap 10 is in sliding contact on the surface 22 of the disk. These coefficients of friction of the surfaces 21 and 22 result for example from the material constituting the sealing disc or are the consequence appropriate treatments or coatings. of the examples of materials and coatings are given more low.

The lower face 21 delimits optionally an annular hollow impression 211, visible in FIG. substantially complementary to the rim 4 of the neck 2.

According to an advantageous characteristic of the invention and independent of the presence of the sleeve 30, the disc 20 is made of at least two layers cylindrical 23 and 24 superimposed axially. These layers 23 and 24 are integral with each other either by simple friction, or by a suitable adhesive material.

The lower layer 23 is made of a material waterproof, rigid or semi-rigid in order to stabilize the structure and avoid a leakage rupture. Layer 24 is made of a flexible material, in practice more flexible than the material constituting the layer lower 23.

The layer 23 may be provided with plastic deformation while the layer 24 is elastically deformable and reversible way so that at rest, that is to say when the closure device 1 is not reported on the neck 2, the upper face 22 of this layer extends through substantially in a plane transverse to the X-X axis while, when the device 1 is in its capping configuration of Figures 2 and 3, the bulge inside 111 of the cap 10 deforms down the face upper 22, the layer 24 transmitting the effort of pressure P at the lower layer 23.

Advantageously, the flexible layer 24 has a long holding in elasticity so that it takes again overall its original form even after remaining in a distorted configuration for several years.

As an example of materials constituting the layer lower 23, both sufficiently rigid and high coefficient of friction vis-à-vis the rim 4, we can mention polyethylene foams, possibly covered, drinking side, of a thin film of a material soft and soft, such as an ionomer, or an end multi-layer coating incorporating a layer of metal or polyvinylidene chloride (PVDC) to ensure better gas tightness. Similarly, as subjects constituting the upper layer 24, both sufficiently flexible and sliding contact vis-à-vis the cap 10, we can mention silicone, rubber or elastomers thermoplastics such as styrenes-ethylene / butylenes-styrenes (SEBS).

The assembly of the closure device 1 and its implementation place around neck 2 will now be described.

Initially, it has the cap 10 in its state mold removed mentioned above, that is to say in particular with its tongue 122 directed downwards, and the sleeve 30 and sealing disc 20.

First, bring the sealing disc 20 above the sleeve 30, coaxially, and axially deposits this disc on the upper face 353 of the shoulder 351. No deformation of the disk is necessary, the inside diameter of the upper part the sleeve being slightly larger than the outside diameter of the disc.

In a second step, the sleeve 30 is introduced thus provided with the disk 20 inside the cap 10, in introducing it axially and in force from its end lower open. Tooling for setting up the sleeve inside the cap then ensures advantageously the folding of the tongue 122 towards the up, so that it takes the configuration of the Figures 2 and 3.

The sleeve 30 is axially introduced into the cap 10 until its top end edge 33 comes into abutment against the bottom wall 11. The sleeve is then wedged axially inside the cap by the cooperation of both end singing 33 with the area 13, the lower end edge 34 with the bulge 127 of the skirt 12 and the bump and hollow profile 321 of the sleeve with the complementary profile 125 of the skirt 12 of the cap. The sleeve is also rotated by relationship to the hood by the cooperation of the profiles in bumps and recesses 323 of the sleeve and 126 of the plug.

The cap 40 thus formed of the cap 10 and the sleeve 30 integral with each other and equipped internally with the sealing disc 20 is then attached by screwing around the collar 2 until, on the one hand, the tongue 122 passes below the shoulder 7 of the collar and, on the other hand, on the other hand, the sealing disc 20 is axially pressed between the rim 4 and the annular bulge 111 of the bottom wall 11. The device 1 is then in its configuration of Figures 2 to 4.

At the end of the tightening of the cap 40 around the neck 2, the pressure force P applied to the disc 20 causes the rotating connection of this disc with the drinking 4 while the bottom wall 11 slides on the surface upper 22 of the disc. In this way, in the event that the surface state of the rim 4 is altered, in particular by the presence of micro-cracks or micro-cracks in the glass of drinking 4 carried out for example during the cleaning of the container, these surface asperities are not going to provoke tearing of the waterproof layer 23.

When using the device for the first time capping 1, a user unscrews the device applying a corresponding torque on the plug 40, especially by tightening this plug at the surface outer grooved 121 of the skirt 12. As the sleeve 30 is immobilized inside the cap 10, the whole of the device is unscrewed upward causing the gripping tabs 122 against shoulder 7 of collar 2. By breaking the weakening line 123, the whole upper part of the device 1 continues to be unscrewed up, while the lower part of the cap 10 stays in place around the collar.

Depending on the manufacturing tolerances of the tongue 122 as well as the surface state of the shoulder 7, which can be altered by splinters of glass constituting the neck 2, it is possible that a non-axial play negligible exists between the free end of the tongue and the shoulder. In other words, the device 1 is then unscrewable on an angular stroke of several degrees without the weakening line 123 be broken. During this initial phase of unscrewing cap 40, the tightness of the container is however assured by the sealing disk 20. More precisely, the layer upper elastic 24 then compensates the elevation towards the top of the cap, deforming elastically so as to maintain the watertight support of layer 23 on the rim 4. The user of the closure device 1 is thus ensured the perfect hermetic preservation of the contents of the container 3, in particular where the latter contains a product particularly sensitive to air and / or has been filled in aseptic conditions. This arrangement advantage of the sealing disc 20 also limits the so the risks of tampering with the contents of the container 3, that is to say, more generally, the introduction untimely inside this container of substances not to be there and who could have entered when the cap 40 is removed from the drinking without that the line of weakening 123 is broken.

The device 1 can then be screwed back onto the neck 2 of the container 3, the disc 20 being returned to position against the rim 4 as when placing initial place of the device on the neck.

FIGS. 5 to 7 show a variant 1 ' of the closure device 1 of the preceding figures. By convenience, identical elements between devices 1 and 1 'have the same references while the elements specific to the device 1 'carry references followed a premium.

Variant 1 'is essentially different from device 1 by the shape of the part joined to the inside of the cap 10 which, unlike the sleeve Of the preceding figures, is in the form of a cap 30 'consisting of a body 31' generally tubular axis X-X and open axially to only one of its two ends.

Like the sleeve 30, the cap 30 'is adapted to be introduced inside the cap 10, being immobilized both axially and in rotation about the axis X-X, and thus have a cap 40 '. For this purpose, cap 30 'is provided with arrangements similar to the sleeve 30, that is to say an outer face 32 'which, in section transverse, has a profile 323 'in bosses and recesses analogous to that shown in Figure 4 for the sleeve 30, of a portion 33 'of upper end which forms a axial stop upwards relative to the cap 10 and a bottom end edge 34 'forming a stop axial downwards relative to the cap.

Unlike the sleeve 30, the end portion upper 33 'of the cap 30' consists of a wall background in the form of a disc of material, centered on the X-X axis, which closes the upper extremity of the body tubular 31 '. This bottom wall 33 'is not connected to all its periphery to the body 31 ', but in several zones 36 'distributed uniformly along this periphery. Moon of these connecting zones is shown in section on the Figure 6 and not in Figure 7.

The inner face 35 'of the cap 30' is provided, in its lower part, a net 352 'similar to the net 352 of the sleeve 30. In its upper part, the inner face 35 ' is provided with a plurality of notches 351 'radially protruding inwards, distributed according to the periphery of the body 31 ', between two connecting zones 36'. Each notch 351 'delimits an upper face 353' substantially planar and adapted to form an axial support down to the sealing disc 20. The entire these faces 353 'thus constitutes an axial support for the disc 20, substantially similar to the face 353 of the shoulder 351 of the sleeve 30.

The assembly of the closure device 1 'and its setting in place around neck 2 will now be described.

Initially, it has the cap 10 in its state demoulded defined above, as well as the cap 30 'and the sealing disc 20.

The disk 20 is brought inside the cap 30 ' so as to place this disc axially between the faces 353 'of the notches 351' and the bottom wall 33 '. To the difference of the device 1, to allow this setting place, a slight deformation of the disc is necessary and the axial distance separating the faces 353 'of the wall of bottom 33 'must be strictly greater than the thickness at rest of the disc 20.

Before or after setting up disk 20 to inside the cap 30 ', this cap is placed at the inside of the cap 10, by introducing it axially and in force from its open lower end, so analogous to the introduction of the sleeve 30 in this cap.

This forms the cap 40 'which is then reported by screwing around the neck 2 until, on the one hand, the tongue 122 passes over the shoulder 7 of the neck, and on the other hand, the sealing disc 20 is axially pressed between the rim 4 and the bottom wall 33 'of the 30 'headdress. The device is then in its configuration of Figures 6 and 7.

At the end of tightening the stopper 40 'around the neck 2, the pressure force P applied to the disc 20 causes the rotating connection of this disc with the drinking 4 while the bottom wall 33 'slides on the surface upper 22 of the disc. In the same way as for the device 1, assuming that the surface 4 is altered, the waterproof layer 23 of the disc 20 is not damaged. It will be noted that, at the difference in the device 1, the tightening of the plug 40 'does not not drive the disc 20 directly by the wall bottom 11 of the cap 10, but by the bottom wall 33 'of the cap 30 ', this bottom wall being itself pressed downwardly through the bottom wall 11 of the cap. he It is therefore appropriate that the lower surface 21 of the disk 20 has a coefficient of friction, vis-à-vis the glass constituting collar 2, which is strictly greater than coefficient of friction between the upper face 22 of this disc and the wall 33 'of the cap 30', so that the face 22 in sliding contact while the face 21 is in turn the disc 20 to the collar 2 during the application of the pressure force P.

The first use of the device 1 ', as well as its subsequent uses are similar to those described for the device 1.

In Figure 8 is shown in part a variant 1 '' of the closure device 1 of FIGS. 1 to 4. convenience, identical elements between devices 1 and 1 '' bear the same references while the elements specific of the device 1 '' carry references followed by one second.

Variant 1 "is essentially distinguished from device 1 by, on the one hand, its sealing disc 20 '' which is mono-layer and, on the other hand, the presence of a another 14 '' permanent sealing disc of the bottom wall 11, for example by gluing. The cap 10 '' of the device 1 '' thus comprises both the body in plastic material including the bottom wall 11 and the skirt 12, that is to say generally the cap 10 of the device 1, and the disc 14 '', the cap 10 '' forming a set in one piece.

The cap formed of this cap 10 '' and the sleeve 30 is referenced 40 ''.

For variant 1 '', when the cap 4 '' is tight around the neck 2, the 14 '' disc, fixed relative to the bottom wall 11, press the disc 20 '' against the drinking 4 of the collar 2, as indicated by the arrows P. So similar to device 1, the pressure applied to the 20 '' disc causes its connection in rotation with the drink 4 at the bottom surface 21 '' while the 14 '' disc slides on the top surface 22 '' of the disc 20 ''. The 14 '' and 20 '' discs are thus free to rotate relative to each other.

For example, the disk 14 '' of the cap 10 '' is made of an elastic material, such as silicone, while the sealing disc 20 '' is made in one polyethylene foam covered, the side of the drinking 4, a coating with a high coefficient of friction vis-à-vis of the drinking glass while it is covered, on the side opposite, of a coating with a low coefficient of friction vis-à-vis the 14 '' disc.

• de manière analogue à la couche inférieure 23 du disque 20, la matière constituant le disque 20'' n'est pas endommagée au niveau de sa surface 21'' par le buvant 4 si ce dernier présente un état de surface altéré, et
• de manière analogue à la couche supérieure 24 du disque 20, le disque élastique 14'' compense le début d'élévation du bouchon 40'' lors de son dévissage de façon à maintenir l'appui étanche du disque 20'' sur le buvant.

It will be noted that this variant 1 "combines the same advantages as the device 1, namely that:

• similarly to the lower layer 23 of the disk 20, the material constituting the disk 20 "is not damaged at its surface 21" by the rim 4 if the latter has an altered surface state, and
• similarly to the upper layer 24 of the disc 20, the elastic disc 14 '' compensates for the beginning of lifting of the cap 40 '' during its unscrewing so as to maintain the sealing support of the disc 20 '' on the rim.

The assembly, the first use and the subsequent uses of the device 1 '' are analogous to those described for the device 1.

A variant not shown is to combine the variants 1 'and 1' 'by joining a flexible disk analogous to the disk 14 '' on the bottom wall 33 'of the cap 30 'and using the sealing disc 20' '.

Various arrangements and variants to the device capping described above are of course conceivable. For example, the sealing disc 20 is replaceable by a sealing washer whose diameter interior is substantially equal to or smaller than the diameter 4. Also, in addition or in place means for securing by complementarity of forms envisaged above, the tubular part 30 or 30 'reported permanently inside the cap 10 can be welded to this cap, especially by applying ultrasounds, or well glued.

Claims (11)

Device for capping a container neck (2) (3), in particular made of glass, comprising a removable cap (40; 40 ';40'') for closing the neck (2) and a sealing piece (20; 20 '') adapted to be pressed against the rim (4) of the neck by the plug, characterized in that the sealing piece (20; 20 '') delimits, on its side intended to be turned towards the (4) of the neck (2), a first surface (21; 21 '') of sealing support on the rim and, on the opposite side, a second surface (22; 22 '') of support pressing the stopper ( 40, 40 ', 40''), the respective contact properties of these first and second bearing surfaces being able to cause, when a pressure force (P) is applied to the sealing piece by the plug, a rotational connection of the sealing member and the neck at the first bearing surface (21; 21 '') and a sliding contact between the sealing member and the plug at the level of the second bearing surface (22; 22 ''). Container (3), in particular glass, having a neck (2) and equipped with a device (1; 1 ';1'') for plugging this neck comprising a removable cap (40; 40'; 40 '') collar closure member and a sealing member (20; 20 '') adapted to be pressed against the neck rim (4), characterized by the coefficient of friction between the sealing member (40; 40 '; 40 '') and the rim (4) of the neck (2) is strictly greater than the coefficient of friction between the sealing piece (20; 20 '') and the plug. Device or container according to one of Claims 1 or 2, characterized in that the plug (40; 40 ';40'') has a cap (10; 10'') and a generally tubular component (30; 30'). open at at least one of its axial ends (33, 34; 34 '), adapted to be attached both around the neck (2) of the container (3) removably and within the cap (10; '') in a fixed manner and provided on its inner face (35; 35 ') with means (351; 351') for axial support of the sealing piece (20). Device or container according to Claim 3, characterized in that the outer face (32; 32 ') of the tubular piece (30, 30') carries first locking means (321, 33, 34; 33 ', 34'). in axial translation and first rotational locking means (323; 323 ') associated respectively with second translational locking means (125, 11, 127; 11, 127) and second locking means (126; 126). in rotation, in particular complementary, carried by the inner face (124) of the cap (10; 10 ''). Device or container according to one of Claims 3 or 4, characterized in that the axial support means (351) define at least one axial retaining surface (353) of the sealing piece (20; 20 "). spaced from one (33) of the ends of the tubular piece a distance (x) strictly less than the axial thickness of the sealing piece (20; 20 '') when the tubular piece is outside the cap (10; 10 ''). Device or container according to one of the preceding claims, characterized in that the sealing member (20) has at least one side facing the rim (4) of the neck (2) when the device (1; ) closes the container (3), a first layer (23) sealed and, on the opposite side, a second layer (24) elastically deformable. Device or container according to any one of the preceding claims, characterized in that the plug (40 '') comprises a resiliently deformable element (14 '') secured to another part (11) of the plug and adapted to press against the sealing piece (20 ''). Device or container according to one of Claims 6 or 7, characterized in that the closure device (1; 1 ') is provided with control means (122, 123) for the first use of the device, adapted to cooperate with a part of the device. corresponding (7) of the neck (2) during the first unclogging of the container (3) and in that the amplitude of elastic deformation of the second layer (24) of the sealing piece (20) and / or the amplitude of elastic deformation of the elastically deformable element (14 '') of the plug (40 '') are greater than the clearance between these control means and this part (7) of the neck. Method of manufacturing a closure device for a container neck (2) (3), in particular made of glass, in which a sealing piece (20) adapted to be pressed against the water (4) of the neck (2), characterized in that a cap (10) and a generally tubular part (30; 30 ') open to at least one of its axial ends (33, 34; 34 ') and provided on its inner face (35; 35') with means (351; 351 ') for axial support of the sealing member (20; 20'') and in that the method comprises the stages during which: a) placing the sealing piece (20) inside the tubular piece (30; 30 '), axially pressing on the support means (351), and b) the tubular piece (30; 30 ') is introduced and immobilized inside the cap (10; 10'') so as to obtain a removable cap (40; 40'; 40 '') for closing the neck ( 2), adapted to press the sealing piece (20; 20 '') against the rim (4) of the neck (2). Process according to Claim 9, characterized in that the tubular part (30) used is a sleeve open at its two axial ends (33, 34), in that step a) of placing the sealing part (20; 20 '') is performed before step b) of introduction and immobilization of this sleeve (30) and in that , during step a), the sealing piece is placed in axial bearing on the support means (351) being introduced into the sleeve from its axial end (33) which will be closest to the bottom wall (11) of the cap (10) at the end of step b). Process according to any one of claims 9 or 10, characterized in that , during step b) of introducing and immobilizing the tubular piece (30; 30 '), it is folded towards the bottom wall ( 11) of the cap (10; 10 '') a tongue (122) projecting from the inner face (124) of the cap (10) and adapted to be engaged with a corresponding axial abutment (7) of the neck (2) during the first uncorking of the container (3).

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