EP0816253B1 - Device and process for the separate storage of at least two products, for the mixture and distribution of these products - Google Patents

Description

The present invention relates to a device allowing the separate storage of at least two products, their mix and the mix distribution as well obtained according to the preamble of claim 1 and a method of manufacturing this device according to the preamble of claim 24.

We know from French patent application 2,290,366 a device allowing the separate storage of two products, their mixing and distributing the resulting mixture, this device comprising a neck container containing one of the products and a blister card, made of semi-rigid plastic such as polyvinyl chloride, containing the other product, arranged on the neck of the container.

A pusher is provided to cause the tearing of a lid sealing the blister card and allowing the product contained therein to fall into the container, to mix to the other product.

Application WO 97/11008, which can only be relied on for novelty, describes a device in which a cover is screwed onto a threaded neck of a bottle to eject from its position storage of an element retaining a substance. When the cover is released, it does not come back not in its original position.

We also know by the French patent application FR 2 722 765 in the name of the company depositing a system comprising a container and a removable plug placed at the interior of the container to separate two chambers containing respectively the two products before the first use. The shutter is ejected or torn by means of a pusher during the first use of the device to port said chambers to allow mixing of said products. The push-button is also advantageously used to create, at each once pressed, an overpressure in the container and departure of a predetermined quantity of mixture. A return spring allows the pusher to be returned to its initial position when it is released by the user. At least one of the two products being typically a liquid, it is necessary for the pusher to move tightly in relation to the container so as to avoid any leak. The seal is obtained by a tight adjustment of the pusher in a cylindrical part of the container and it is reinforced if necessary by the presence of a sealing skirt surrounding said cylindrical part. A tamper-evident ring can prevent the movement of the pusher as long as it is present on the container. A such a device has a fairly large number of parts components and its manufacture and assembly are therefore relatively expensive.

The object of the present invention is to further improve this type device, in particular to reduce its manufacturing cost.

It achieves this by proposing a new device as defined in claim 1.

Thanks to the invention, the manufacture and assembly of the device can be simplified since the pusher and container no longer has to be adjusted precisely to get tightness during use and storage. The pusher and the container can also have a wide variety of shapes.

The deformable part of the seal, made in a elastically deformable material, behaves like a spring allowing the pusher to be recalled each time it is released by the user.

The pusher can thus be used to cause a overpressure inside the container each time it is pressed - and the departure of a predetermined quantity of mixture.

Preferably, the pusher is connected to the container by the minus a bridge of breakable material to break during the first use. The manufacturing of the device is then simplified since the pusher can be produced by molding in one piece with part of the container. The material bridge (s) which are broken during the first use advantageously serve as witness of inviolability. This avoids the use of a ring of tamper-evidentness reported on the container as it is encountered on the devices of the prior art.

Advantageously, the pusher is shaped to cause, during the first use, a deformation of said part deformable so as to form a pointed zone intended to strike the shutter.

Preferably, the seal is made in a thermoplastic elastomer so that recycling the device is facilitated.

The deformability of the joint can be obtained by particular conformation such as a localized thinning of its wall. It is also possible, as a variant, to conform the deformable part of the joint according to a bellows.

Preferably, the deformable part of the joint has a general shape of a thimble whose transverse dimension is chosen so that at least a portion of said portion deformable remains substantially in contact with the wall of the container when moving the pusher. Preferably, one of the products is contained in a chimney of the container, the pusher is mounted on the container so that it can be moved over a stroke sinking greater than or equal to the maximum product height contained in said chimney and said deformable part present one end adapted to slide in contact with the wall of said fireplace. We thus manage to drive out almost all of the product contained in one of the bedrooms towards the other bedroom from the first pressure on the pusher. This prevents, when the product at contact of the joint is a powder and the other product contained in the container a liquid, that remain nooks where could remain clods of powder during the communication of two rooms.

The free end of the deformable part may have a or several reliefs intended to create one or more primers of tear the shutter or facilitate its departure by exerting a localized push likely to favor its displacement relative to the container.

We can thus provide at the free end of the part deformable joint a central pin or an annular lip peripheral, continuous or not.

According to a particular embodiment of the invention, the container is formed by the assembly of a hollow body and a end part comprising a base to be fixed to said body and a cap fixed to the base and connected by at least one bridge of material to the button before the first use of the device. Advantageously, said base, said cap and said pusher are molded in one piece, the base being connected by a film hinge at the cap. Thus, the manufacture and assembly of the device are greatly simplified compared to the devices prior art. Alternatively, the cap can be made so independent of the base and fixed on the latter by snap. In addition, it is possible to make the base and the hairstyle with different profiles depending on the desired aesthetic, but preferably chosen so as to confer on the end part, after assembly of the base and the cap, a shape capable of serve as a grip or stop for the user's fingers to prevent the device from sliding when the device presses the pusher.

The shutter can be constituted by an aluminum cover heat-sealed on said base. Alternatively, it may have come from molding with the container. It can also be made up of a plug fitted in the container.

The part of the pusher that comes into contact with the seal sealing can take various forms.

It is thus possible in a particular embodiment of the invention to realize this part in the form of a set of tabs arranged in a cone converging towards the center of the seal and coming to rest by their free end substantially in the middle of the joint and over a reduced extent of so as to exert a central thrust on the shutter.

Preferably, means are provided for retaining the push on the container when the material bridge (s) which serve as a witness to inviolability have been severed.

We can thus secure the seal and the pusher by gluing, welding, friction or snap-fastening. We can still provide the container and / or the pusher with notches or tabs capable of retaining the pusher after its initial depressing.

• réaliser un corps creux muni de moyens d'obturation amovibles à une extrémité et ouvert à une autre extrémité,
• réaliser par moulage d'un seul tenant une partie d'extrémité comportant une embase pour la fixation à l'extrémité ouverte dudit corps creux et une coiffe reliée à l'embase par une charnière film, ladite coiffe comportant un poussoir relié au reste de la coiffe par au moins un pont de matière sécable, ladite partie d'extrémité comportant une cheminée,
• fixer ou former à une extrémité de ladite cheminée un obturateur amovible,
• remplir d'un premier produit ladite cheminée,
• rapporter sur ladite cheminée un joint d'étanchéité conformé pour fermer ladite cheminée,
• rapporter par pivotement autour de ladite charnière film la coiffe sur l'embase,
• remplir par ladite extrémité ouverte ledit corps creux d'un deuxième produit,
• rapporter ladite partie d'extrémité sur ladite extrémité ouverte dudit corps creux.

The subject of the invention is also a method of manufacturing a device for the separate storage of at least two products, their mixing and the distribution of the mixture thus obtained, characterized in that it comprises the steps consisting in:

• make a hollow body provided with removable sealing means at one end and open at another end,
• producing by molding in one piece an end portion comprising a base for fixing to the open end of said hollow body and a cap connected to the base by a film hinge, said cap comprising a pusher connected to the rest of the cap by at least one bridge of breakable material, said end part comprising a chimney,
• fix or form a removable shutter at one end of said chimney,
• fill said chimney with a first product,
• add on said chimney a sealing gasket shaped to close said chimney,
• bring the cap onto the base by pivoting around said film hinge,
• filling said open end with said hollow body with a second product,
• attaching said end portion to said open end of said hollow body.

• la figure 1 est une vue en élévation latérale d'un dispositif conforme à un exemple particulier de réalisation de l'invention,
• la figure 2 est une vue schématique en coupe longitudinale du dispositif représenté sur la figure 1,
• la figure 3 est une vue analogue à la figure 2, représentant le poussoir après rupture des ponts de matière sécables qui le relient au récipient,
• la figure 4 est une vue en coupe schématique et partielle illustrant l'assemblage du dispositif, et
• les figures 5 et 6 sont des vues en coupe schématique illustrant des variantes de réalisation de l'invention.

Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, of non-limiting exemplary embodiments of the invention, and on examining the appended drawing in which:

• FIG. 1 is a side elevation view of a device according to a particular embodiment of the invention,
• FIG. 2 is a schematic view in longitudinal section of the device shown in FIG. 1,
• FIG. 3 is a view similar to FIG. 2, showing the pusher after breaking the bridges of breakable material which connect it to the container,
• FIG. 4 is a schematic and partial sectional view illustrating the assembly of the device, and
• Figures 5 and 6 are schematic sectional views illustrating alternative embodiments of the invention.

FIGS. 1 and 2 show a device 1 in accordance with a first embodiment of the invention, comprising a container 2 and a shutter 3 separating the interior of the container in two chambers 4 and 5.

In the particular embodiment described, the chamber 4 located in the lower part of the container contains a liquid product L and the chamber 5 located in the upper part of the container of a powdery product P. The volume of chamber 4 is significantly higher than that of room 5. Of course, there is no does not depart from the scope of the invention by using the device 1 for separate packaging of two liquids.

The container 2 is formed by the assembly of a part end 7 and a hollow body 6, generally tubular and elongated along a longitudinal axis X in the example described. The body 6 is provided at its lower end with a neck 8 defining an orifice 9 for the distribution of the mixture.

If the device is not used, the orifice 9 is closed by a removable closure cap 10 which can be fixed by any means known per se on col 8.

In the embodiment described, the cap 10 comprises an internal tubular skirt 11 shaped to snap onto a annular bead 12 provided in the vicinity of the base of the neck 8 and a central pin 13 shaped to close the orifice 9. The cap 10 and the neck 8 may alternatively be shaped to cooperate by screwing and one can also provide any other means of sealing the dispensing orifice 9 without departing from the scope of this invention.

The end part 7 has a base 14 intended for be snapped onto the open upper end of the body 6 and a cap 15.

In the embodiment described, the cap 15 is connected by a material bridge 16 forming a film hinge at the base 14 and it is fixed by snap-fastening on the latter after pivoting 180 ° as shown in Figure 4.

The base 14 includes an outer shell 17 extended at its lower part upwards by a cylindrical internal skirt 18 from surrounding the upper end of the body 6 when the part end 7 is in place, as shown in FIG. 2.

The internal skirt 18 is connected, by bridges of material 19, to a central part 20 having in the lower part a crown 34 defining an annular groove 21 open downwards and shaped to engage the upper end of the body 6. The part 20 has in the upper part a chimney 22 centered on the longitudinal axis X. The chimney 22 is generally cylindrical and it is closed at its lower end by the shutter 3 and at its upper end by a seal sealing 23.

In the particular embodiment described, the shutter 3 is constituted by an aluminum cover heat-sealed on an annular surface 24 bordering the orifice bottom of chimney 22.

The seal 23 is made of an elastically material deformable and has a central wall 25 engaged in the chimney 22 and contour adapted to that of the cross section from the fireplace. In the particular example described, the wall 25 is circular and has a corresponding external diameter substantially at the internal diameter of the chimney 22. The wall 25 is extended upwards at its periphery by a wall 26 forming a annular groove open downwards and intended to close so sealing the upper end of the chimney 22. The wall 26 is extended, radially outward, at its end opposite to that connected to the wall 25, by an annular wall 27 which extends substantially perpendicular to the longitudinal axis X. The wall 25 and the portion of wall 26 located inside the chimney 22 constitute a thermowell.

The cover 15 comprises a shell 29 forming with the shell 17 of the base 14 and after snap-fastening on the latter, a outwardly convex annular bulge, as shown in Figures 1 and 2. The shells 17 and 29 may have on their external surface of the reliefs intended to give the device 1 a particular aesthetic and allowing, if necessary, to improve ergonomics and maintenance of the device 1 during use. We referenced 41 and 42 in Figure 4 the annular grooves formed respectively on the shells 17 and 29 and intended to allow the snap-on fixing of the latter.

The shell 29 is extended at its radially most internal by a cylindrical internal skirt 30 coming, when the cap 15 is fixed to the base 14, in contact with the wall 27 of the seal 23, as shown in Figure 2.

The internal skirt 30 is connected, until the first use of the device, by bridges of breakable material 31 to one pusher 32.

This pusher 32 is internally provided with a barrel 33 used to transmit the thrust, as will be explained below. The barrel 33 is connected at one end to a wall 35 substantially perpendicular to the longitudinal axis X and constituting the top of the pusher 32. This wall 35 is extended at its periphery by a outer skirt 36 partially surrounding the barrel 33.

The material bridges 31 connect the external skirt 36 and the skirt internal 30.

The location of these material bridges 31 and the configuration pusher 32 are chosen so that pusher 32 protrudes from the hull 29 when held by the bridges of material 31 waiting to be activated, as shown in the Figures 1 and 2.

In the embodiment described, the base 14, the cap 15 and pusher 32 are produced in one piece by injection molding in the configuration shown in the Figure 4. The cover 3 is heat sealed on the part 20 then the chimney 22 is filled with product P and the seal 23 is put in square.

Then, the cap 15 is pivoted by 180 ° and snapped on the base 14. The wall 27 of the seal 23 is then pinched between the upper surface of the crown 34 and the free edge of the internal skirt 30, as shown in FIG. 2. The crown 34 may have a rib on its face opposite the seal 23 annular 28 intended if necessary to promote sealing obtained between the part 20 and the cap 15. The chamber 5 containing the product P is isolated thanks to the seal 23 of the ambient air for a good conservation of product P until the first use of the device.

Preferably, means are provided for retaining the pusher 32 on the end part 7 after breaking of the bridges material 31.

We can thus connect the barrel 33 and the central wall 25 of the joint 23 by gluing, welding, friction or snap-fastening. We can still provide on the pusher retaining means cooperating with the cap as will be described later.

The end part 7 is snapped onto the body 6 after filling of the latter with product L, the neck 8 having been previously fitted with the closing cap 10.

In the example of embodiment described, a bead annular 37 is formed in the vicinity of the upper end of the body 6 and the base 14 has internal projections 38 shaped to retain the end portion 7 on the body 6 6 when the end part 7 is fixed to the body 6.

The upper bracket 39 of the latter then applies in the bottom of the groove 21 for sealing the container. We can of course change the way the end part is fixed to the body 6 without departing from the scope of the invention.

The filling of the body 6 with the product L is preferably incomplete so as to provide a gas volume facilitating the mixture of the two products after departure or tearing of the shutter 3.

For the first use of the device, the user exerts pressure on pusher 32 and breaks the bridges of material 31 which retains it to the internal skirt 30.

The depressing of the pusher 32 exerts pressure on the joint 23 which transmits it in the embodiment described in product P contained in chamber 5, to cause tearing of the cover 3 and the ejection of the product P inside the body 6 to be mixed with product L.

In the embodiment described, the wall 25 is provided with its periphery and on its face in contact with the product P of a relief 40 intended to create a primer for tearing the shutter 3.

The force to be exerted on the wall 35 of the pusher to cause the communication between rooms 4 and 5 is thus reduced, and the shutter 3 starts or tears apart predetermined.

Furthermore, the barrel 33 does not exert any notable thrust on the shutter 3 as long as the material bridges 31 are not broken. The rupture of the latter occurring relatively suddenly, the bole 33 then behaves like a striker capable of projecting the product P wholly or almost deeply within product L, from the first use of the device 1, whatever the orientation of the latter. This results in rapid mixing and effective of product P within product L.

When the plunger 32 descends, the seal 23 deforms to accompany the movement of the bole 33 while continuing to close sealingly the chamber 5 at its upper end, as shown in Figure 3. More specifically, in the example of embodiment described, the portion of the wall 26 located inside of the chimney 22 elastically stretches when the pusher 32, thanks to the elasticity of the material which constitutes it, the elongation of this portion of the wall 26 up to 10% or more than its original height. When the user releases this one, the portion of the joint 23 which has elastically deformed tends to return to its original shape and bring the pusher 32 into its original position. We will notice that at the end of its race the outer skirt 36 abuts against the wall 27 of the seal 23. It is thus possible to avoid any shock between parts in rigid plastic material, which improves comfort in use and reduces the risk of damage to the device 1.

The pusher 32 is advantageously used to cause each time it is pressed and moves on a run predetermined with respect to the container a slight overpressure at the interior of the container and the departure of a predetermined amount mixing through port 9.

FIG. 5 shows a device 1 'in accordance with a second embodiment of the invention.

This device includes certain elements identical to those of the previous embodiment example. These elements relate to figures with identical references and will not be described again.

The device 1 'shown in Figure 5 differs in particular of the device 1 previously described by the fact that the shutter is produced, no longer in the form of a seal heat-sealed, but in the form of a thin 3 'wall coming from formation by molding with the rest of the base 14. Preferably, as shown in Figure 5, the wall 3 'is connected to its periphery by a ring of thinned material 41 so as to facilitate its detachment from the part 20.

To illustrate that the gasket can present various forms without departing from the scope of the invention, we have shown in Figure 5 a seal 23 'which differs from the seal 23 previously described by the fact that the wall 25 is connected to the rest of the seal by a wall 26 'having an annular recess 47 on its internal surface, intended to facilitate the deformation of the joint when it accompanies the downward movement of the pusher. It is thus possible to conform the joint so that it deforms in a predetermined manner when the pusher is pressed.

The pusher 32 'is shaped in the embodiment example described so as to exert a push on a weak area extended to the center of the wall 25 of the joint 23 '. More specifically, the push-button 32 'is shaped to provoke during the first use, deformation of the deformable part of the seal so as to form a pointed percussion area of the shutter, the was 33 of the previous embodiment was replaced in the present embodiment by a set of fins 43 arranged according to a cone converging towards the center of the wall 25. When the user pushes the push-button 32 ', the latter only presses at the center of the wall 25 at the start of its descent and thus exercises by through the product P a strong pressure in the center of 5 the shutter 3 'promoting the ejection or tearing of this latest. Mainly pushing also makes it possible to avoid compacting the entire product P during from the initial push in.

FIG. 6 shows a 1 "device conforming to a third embodiment of the invention.

This device 1 "differs from the previous ones in particular by the fact that the shutter is constituted by a 3 "plug fitted in the lower mouth of the chimney 22. Furthermore, the joint 23 "present, in the center of the wall 25 and on its face at contact of product P, a pin 44 whose apex rests on shutter 3 ". Thus, when pusher 32 is pressed, the thrust is transmitted via this pin 44 directly to the shutter 3 "without passing through a thickness significant of product P. This avoids compacting the product P at during the initial push-in.

Furthermore, to illustrate the fact that we can retain the pusher 32 otherwise than by making it integral with the seal sealing, there is shown in Figure 6 notches 45 formed at the periphery of the external skirt 36 of the pusher 32 and capable of pass elastically, when the pusher 32 is depressed the first time, projections 46 formed on the surface radially internal of the skirt 30. These projections 46 are shaped to retain the pusher 32 on the cover 15 after the first use of the device.

In the three exemplary embodiments which have just been described, the wall 25 remains substantially in contact with the surface radially internal of the chimney 22 and the pusher moves advantageously over a stroke greater than or equal to the height maximum of product in chamber 5 5 so that we ensure ejection of almost all of the product contained in chamber 5 during the initial depressing of the pusher, regardless of the device position.

Of course, the invention is not limited to the examples of realization which have just been described.

One can in particular modify the shape of the hollow body 6 and that of the end part 7, the fact of using two parts 14, 15 connected by a film hinge allowing a great diversity of shapes to make the end part 7.

It is also possible, without departing from the scope of the invention, mount several removable plugs inside the container for separate storage, mixing and distribution of more than two products. We can thus realize several rooms in the chimney 22, separated from each other by shutters which are ejected or torn during the initial actuation of the pusher.

In addition, the dispensing orifice can be of any nature, be constituted for example by a porous applicator such than a sintered foam, by a brush or a dropper.

Claims (24)

1. A device (1; 1'; 1") configured to enable at least two substances (P, L) to be stored separately, to be mixed together, and the resulting mixture to be dispensed, the device being of the type comprising a receptacle and at least one removable shutter suitable for separating inside the receptacle two chambers containing said substances respectively prior to first use of the device, the device further including a pushbutton for moving on first use to cause said shutter to be moved away or torn and the two chambers to be put into communication with each other, the device including a gasket (23; 23'; 23") comprising a portion (27) fixed to the receptacle and a deformable portion (25, 26; 25', 26'), characterized by the fact that said deformable portion is made of an elastically-deformable material, suitable for deforming when the pushbutton is depressed so as to accompany the movement of the pushbutton, while continuing to constitute a sealing barrier between the inside of the receptacle and the pushbutton (32; 32'), and to return the pushbutton when it is released by the user.
2. A device according to claim 1, characterized by the fact that said pushbutton (32; 32') is connected to the receptacle (6, 7) via at least one bridge of breakable material (31) for breaking on first use of the device (1; 1'; 1").
3. A device according to claim 1 or 2, characterized by the fact that said gasket (23; 23'; 23") is made out of a thermoplastic elastomer.
4. A device according to any one of claims 1 to 3, characterized by the fact that said deformable portion (25, 26; 25, 26') is in the form of a glove finger of transverse dimensions selected in such a manner that at least part of said deformable portion remains in contact with the wall of the receptacle during displacement of the pushbutton.
5. A device according to any one of claims 1 to 4, characterized by the fact that said deformable portion is in the form of a bellows.
6. A device according to any one of claims 1 to 5, characterized by the fact that one (5) of said chambers (4, 5) is formed inside a chimney (22) of the receptacle that is closed (6, 7) at one end by said shutter (3; 3'; 3") and at its other end by said gasket (23; 23'; 23").
7. A device according to claim 6, characterized by the fact that the pushbutton (32; 32') is mounted on the teceptacle in such a manner as to be capable of being moved over a depression stroke greater than or equal to the maximum height of substance in said chimney (22).
8. A device according to claim 6 or 7, characterized by the fact that said deformable portion has one end (25) adapted to slide in contact with the wall (22) of said chimney.
9. A device according to any one of claims 1 to 8, characterized by the fact that it includes means for retaining said pushbutton (32; 32') on the receptacle.
10. A device according to claim 9, characterized by th4 tact that said pushbutton (32; 32') is secured to said gasket (23; 23').
11. A device according to claim 9, characterized by the tact that said receptacle and/or the pushbutton have resilient tongues or catches (45, 46) capable of retaining the pushbutton after initial depression thereof.
12. A device according to any one of claims 1 to 11, characterized by the fact that said gasket (23; 23") has an end including at least one projection (40; 44) shaped to create a tear starter in the shutter or to exert thrust at a predetermined location on the shutter.
13. A device according to any one of claims 1 to 12, characterized by the fact that the pushbutton (32') is shaped to exert localized thrust on a surface of small extent of the gasket.
14. A device according to claim 13, characterized by the tact that the pushbutton is shaped so that during first use it causes said deformable portion to be deformed in such a manner as to form a pointed zone for striking the shutter.
15. A device according to any one of claims 1 to 14, characterized by the fact that the receptacle is formed by assembling together a hollow body (6) and an end portion (7) including a base (14) for fixing to said body (6) and a cover (15) fixed to the base and connected to the pushbutton (32) prior to first use of the device via said at least one bridge of material (31).
16. A device according to claim 15, characterized by the fact that said base (14), said cover (15), and said pushbutton (32) are integrally molded as a single piece, the base (14) being connected to the cover (15) via a film hinge (16).
17. A device according to claim 15 or 16, characterized by the tact that said shutter (3') is constituted by a wall integrally molded with the base (14).
18. A device according to claim 15 or 16, characterized by the tact that said shutter (3) is fixed on the base.
19. A device according to claim 18, characterized by the fact that said shutter (3) is constituted by an aluminium film heat sealed to said base (14).
20. A device according to any one of claims 15 to 19, characterized by the fact that said end portion (7) projects from the outer surface of said hollow body (6) to serve as an abutment or as a grip for the fingers of the user when the pushbutton is being depressed.
21. A device according to any one of claims 1 to 20, characterized by the fact that the substance contained in the chamber (5) of the receptacle (6, 7) that is in contact with the gasket is a powder (P).
22. A device according to any one of claims 1 to 21, characterized by the fact that the depression stroke of the pushbutton is selected so as to create sufficient extra pressure inside the receptacle to enable a predetermined quantity of mixture to be expelled through an orifice (9) when the pushbutton is depressed.
23. A device according to claim 22, characterized by the fact that the orifice (9) is defined by a neck (8) at the bottom end of the body (6) of the receptacle.
24. A method of manufacturing a device according to any one of claims 1 to 23 for separately storing at least two substances, for mixing them together, and for dispensing the resulting mixture, the method being characterized by the fact that it comprises the steps consisting in:

    making a hollow body. (6) provided with removable closure means (10) at one end and open at another end;

    making an end portion (7) by integral molding, said end portion including a base (14) and a cover (15) connected together by a film hinge, said cover including a pushbutton (32) connected to the remainder of the cover via at least one bridge of breakable material (31), said end portion including a chimney (22);

    fixing or forming a removable shutter (3; 3'; 3") at one end of said chimney (22);

    filling said chimney (22) with a first substance (P);

    applying onto said chimney (22) a gasket (23; 23'; 23") of an elastically deformable material and shaped to seal said chimney and to return the pushbutton when it is released by the user;

    applying the cover (15) onto the base (14) by pivoting about the axis of rotation of said film hinge;

    filling said hollow body with a second substance (L) via said open end; and

    fitting said end portion (7) on said open-end of said hollow body (6).

Images