EP1069051A1 - Container with anti-spill opening and respective cap - Google Patents

Abstract

The container is especially suitable for capilliary applications. It uses a container (1) with a removable stopper (2) and the stopper has a part that is gripped by the user, and a further part that seals by engaging with the nozzle (4) of the container. The nozzle forms a passage (6) between the inside and the outside of the container through a fluid outlet (7). The liquid inside the container is held at a distance from the fluid outlet when the stopper is in the closed position.

Description

The present invention relates to the field of containers intended to contain a certain quantity of liquid while retaining a part of their internal volume filled with gas.

Such containers are generally provided with a stopper shutter. When the cap is opened, part of the liquid which is nearby, for example a drop retained by capillary action near the cap, can be projected outside the container in case of imbalance between the pressure prevailing inside said container and the ambient pressure prevailing outside. The liquid may then spread near the opening of the container, or even be projected onto the user's hands or clothing. This disadvantage still takes more important when the liquid is likely to cause stains, which is particularly the case when it comes to conditioning hair dye products.

In this regard, we know the document EP-A-0 528 707 which proposes a packaging with two bottles allowing one to be stored separately on the other, two products, especially liquids, and mix them with time of use. This packaging is designed to store separately, on the one hand a dye solution intended for a dye for hair, and on the other hand the oxidant which is necessary for setting dye solution artwork. To dye hair with "oxidation dyes", it is necessary to develop the dye on hair by adding an oxidant, for example hydrogen peroxide, on the dye when it is put in place on the hair. The presentation in double bottles therefore considerably facilitates the implementation of hair coloring.

The user causes, before opening, the mixing of the dye and oxidant solution and usually shakes the conditioning to perfect this mixture. A chemical reaction oxidation is triggered which gives off gas, especially oxygen, which tends to increase the pressure inside conditioning. At the top of the bottle is provided a male tubing threaded on which can be tightly screwed a nozzle closed distribution, and the tip of which can be broken to create a opening at the time of use, in order to pour the product on the hair. This breakable tip prevents the user from resealing the container by reuse of said tip, which is desirable in the since the oxidation dye does not keep after mixing. The user is therefore encouraged to discard the packaging after a first use of dye.

However, it turns out that a drop of dye is found generally in the immediate vicinity of the breakable tip at the time of the opening because the internal end of the dispensing nozzle is shaped pointed which tends to retain a drop of dye by capillarity and that the user generally shook the packaging, which caused the formation of this drop. So when the user breaks the tip to open the packaging, the drop present in the immediate vicinity risk of being projected onto an external surface of the packaging, onto hands of the user or even worse on his clothes which he risks stain beyond repair. This phenomenon is all the more marked since the user caused the two constituents of the dye to mix some time before opening it, for example if it has washed the hair between these two operations. Indeed, the chemical reaction between the two constituents will then have caused an increase in pressure where a greater pressure differential between the interior of the conditioning and the ambient atmosphere upon opening.

In addition, we realized that the sealing means breakable which have very high hygienic qualities are not always easy to set up and use. Indeed, if their mechanical characteristics are too high, the user will tend to use a sharp blade or a pair of scissors to break the tip with a potential risk of injury and a more complex opening. At otherwise, if the mechanical characteristics of the breakable tip are weak, the tip may accidentally break during handling to which the packaging is subjected such as packaging, stacking or transport operations. We then lose a conditioning and there is a risk of staining neighboring packaging which cannot be marketed either, which causes a loss important.

The invention proposes to provide a storage device for liquid with high hygienic qualities before use and when opening while being inexpensive and easy to use and clean.

The device, according to one aspect of the invention, serves for the storage of liquid, in particular capillary, and comprises a container and a stopper removable, the cap being of the type comprising a gripping part and a closure part able to cooperate with a tip of the container, the said nozzle forming a passage between an interior zone of the container and the outside, a free end of the end piece forming an outlet for liquid. The device includes means for holding the liquid contained in the container at an axial distance from the orifice of the nozzle, the plug in closed position.

Thus, a sudden outpouring of the liquid out of the container when opening when the pressure in the area inside the container is higher than the outside pressure the container being partly filled with liquid and partly with gas. The liquid is kept away from the orifice of the nozzle.

Advantageously, means for fixing the plug to the container are provided, and the cap includes means for allowing a balance of pressure in the interior area of the container and the outside pressure when opening before the fastening means of the cap on the container are deactivated. This provision allows the depressurization of the container before the liquid it contains drains.

Advantageously, the plug comprises a part extending substantially between the orifice of the nozzle and an opposite end of the said end piece in communication with the inner zone of the container in position closed. In other words, said part extends from a closed end of the plug at opposite open end and may or may not protrude from said open end. Liquid cannot stay in the front end opening, which reduces the risk of projection when the cap is opened.

Preferably, said part comprises at least one channel capable of to put in communication the interior zone of the container and a zone bounded by the plug and in communication with the outside. The canal, small section, allows the passage of gas but slows the passage of liquid.

In one embodiment of the invention, said part comprises at least two tabs capable of closing at least in part the mouthpiece. Partial plugging prevents or at the very least reduces the formation of drop of liquid ready to squirt outside when the opening. The channel can be formed between the legs. Legs can be different in length from each other. The free ends of legs can be flat, pointed or rounded. The legs can be separated by at least one slot. Slots can be long different from each other.

In one embodiment of the invention, the legs are of length substantially equal to that of the nozzle. The amount of liquid close to the tip is then extremely weak and generally occurs in the form of a thin film.

In another embodiment of the invention, the legs are significantly longer than the tip and protrude in the inner area of the closed container. The amount of liquid close to the tip is again extremely weak and occurs in general in the form of a convex drop of small dimensions to the ends of the legs.

In another embodiment of the invention, the part extending substantially between the orifice of the nozzle and one end opposite of said tip in communication with the inner zone of the container is in shape agreement with the inner surface of the said mouthpiece. The shutter part can be provided either to cooperate with a free end of the nozzle, either to cooperate with one end of the nozzle close to the interior area of the container.

In one embodiment of the invention, the means pressure balance are able to pass through a part of retained liquid in the nozzle by capillary action.

The device may include a tube of length greater than that of the plug, disposed inside said plug and opening out to a end in the vicinity of the orifice of the endpiece in the closed position and at the other end in the inner area of the container.

The invention also provides a removable plug for container for storing liquid, in particular capillary. The cap is of the type comprising a gripping part and a part shutter capable of cooperating with a tip of the container. The tip forms a passage between an interior zone of the container and the exterior, a free end of the nozzle forming a liquid outlet orifice. The cap includes means for holding the liquid contained in the container at a distance from the orifice of the nozzle, the cap being in position closed.

If there is a drop of liquid near the plug, said drop is spaced from the tip which allows a depressurization of the container without projection of liquid liable to spread on exterior surfaces of the container on the hands of a user, on his clothes, etc. Depressurization can be performed by sampling gas under the drop of liquid.

The device, according to one aspect of the invention, serves for the storage of liquid, in particular capillary, and comprises a container and a stopper removable. The cap is of the type comprising a gripping part and a closure part able to cooperate with a tip of the container, the said nozzle forming a passage between an interior zone of the container and outside. A free end of the endpiece forms an outlet for liquid. The device comprises a liquid-tight means for keep said liquid axially away from the outlet orifice and permeable to gas.

The device, according to one aspect of the invention, serves for the storage of liquid, in particular capillary, and comprises a container and a stopper removable. The cap is of the type comprising a gripping part and a closure part able to cooperate with a tip of the container, the said nozzle forming a passage between an interior zone of the container and outside. A free end of the endpiece forms an outlet for liquid. The device comprises a means for spreading, by adsorption, a portion of the liquid at a distance from the orifice of the nozzle, when the device.

The device may include surfaces on which liquid spreads during depressurization. The device can also include surfaces on which liquid is spread over the course of opening movement.

The device, according to one aspect of the invention, serves for the storage of liquid, in particular capillary, and comprises a container and a stopper removable. The cap is of the type comprising a gripping part and a closure part able to cooperate with a tip of the container, the said nozzle forming a passage between an interior zone of the container and outside. A free end of the endpiece forms an outlet for liquid. The device comprises a gas communication means capable of take gas from the device, the liquid remaining maintained in said device.

A drop of liquid usually forming near the outlet orifice, the gas communication means is capable of withdrawing gases elsewhere, in particular beyond the drop, for example under the drop, the container being in normal position, stopper at the top. The gas sampling at a distance from the drop, in particular at a distance radial and / or axial, prevents projection.

We can plan to prohibit or at least hinder the recapping of the container after a first opening by the user.

The plug, according to one aspect of the invention, is intended to close off removably an opening in communication with a reserve of product formed inside a container, said cap comprising mechanical attachment means, able to cooperate with means additional attachment of the tank or an intermediate element mounted on said tank. Said plug comprises suitable means, in unmounted position of said plug, to oppose the establishment of the plug on said opening.

Thus, a user is prevented from recapping the container with the cap, which is a very strong incentive to throw away the said container, which is desired in the case of products liable to degrade after opening and placing in the ambient atmosphere.

Advantageously, said means comprise means elastically deformable which, in the mounted position of the plug, are in engagement inside said opening, said means elastically deformable being such that in the unassembled position of the cap, they delimit at least in part, a section greater than one inner section of said opening.

Said elastically deformable means have, in the state free after opening a cross section greater than the diameter of opening and cannot normally enter said opening which is generally substantially cylindrical or very slightly tapered.

Advantageously, the plug comprises a side wall whose a first end is closed by a transverse wall, and one of which second end is open.

Preferably, the elastically deformable means are formed of at least two legs arranged at least partially inside of the side wall and integral with the transverse wall. Legs can be in one piece with the rest of the cap.

In one embodiment of the invention, the legs are oriented substantially along a longitudinal axis of the side wall.

In one embodiment of the invention, said section of legs, greater than an inner section is formed at least in part by a free end of said legs.

Advantageously, said legs are protruding from the side wall.

In one embodiment of the invention, said legs are separated from each other by slits.

The legs may be of different lengths from each other. The free ends of the legs can be flat, pointed or rounded. The legs can be separated by at least one slot. Of slots can be of different length from each other. Slots may extend to the transverse wall. Slots can be short, and terminate substantially at the free end of the side wall.

In another embodiment of the invention, the means elastically deformable are formed of at least one skirt arranged at the less partially inside the side wall and integral with the wall transverse.

In another embodiment of the invention, the said legs are integral with the side wall.

The plug can be made in one piece by molding. The container can also be made in one piece by molding.

So we see that the plug is easy to manufacture and economical, does not present a risk of untimely opening during handling steps, and is easy and clean to open.

la figure 1 est une vue en coupe axiale d'un récipient conforme à l'invention;

la figure 2 est une vue en coupe selon II-II de la figure 1;

les figures 3 à 6 sont des variantes de la figure 1;

les figures 7 à 12 montrent les étapes de pose du bouchon sur le flacon;

la figure 13 est une vue en coupe selon XIII-XIII de la figure 12;

les figures 14 à 17 montrent les étapes d'ouverture du récipient; et

la figure 18 est une vue en coupe axiale d'un autre mode de réalisation de l'invention.

The present invention will be better understood on studying the detailed description of some embodiments taken by way of non-limiting examples and illustrated by the appended drawings, in which:

Figure 1 is an axial sectional view of a container according to the invention;

Figure 2 is a sectional view along II-II of Figure 1;

Figures 3 to 6 are variants of Figure 1;

Figures 7 to 12 show the steps of fitting the cap on the bottle;

Figure 13 is a sectional view along XIII-XIII of Figure 12;

Figures 14 to 17 show the steps of opening the container; and

Figure 18 is an axial sectional view of another embodiment of the invention.

As can be seen in the figures, the bottle includes a bottle body 1 and a stopper 2. Body 1 is made of glass or synthetic material molded and has, for example, a general shape frustoconical, for example of round, oval or other section, and ends upwards by a shoulder 3 surmounted by a tip 4 of very slightly tapered.

The tip 4 has an upper edge 5 forming its end free, its other end connecting to the shoulder 3. The end piece 4 is hollow and thus forms a passage 6 connecting the interior 1a of body 1 with the exterior. An outlet orifice 7 of planar circular shape is formed at the upper end of passage 6 in the same plane as the upper edge 5 of the end piece 4. A male thread 8 is formed on the surface outside 4a of the nozzle 4.

The plug 2 comprises a side wall 9 in the form of a skirt, very slightly frustoconical, so that its shape is consistent with the shape of the end piece 4. The stopper 2 further comprises a wall upper 10 circular plane and closing the upper end 9a of the side wall 9. The lower end 9b of the side wall 9 is opened. The inner surface 9c of said side wall 9 is provided with a female thread 11 able to cooperate by screwing with the male thread 8 of the end piece 4. The side wall 9 forms a gripping part. Wall upper 10 forms a closure portion.

On the lower surface 10a of the upper wall 10, on the side of the side wall 9 is formed a sealing rim 12 of circular shape relatively sharp and of diameter corresponding to that of edge 5 so that in the closed state, said sealing rim 12 is in leaktight contact with the upper edge 5 of the end piece 4.

The plug 2 comprises three elongated legs 13 connected to their upper end to the lower surface 1 Oa of the upper wall 10 inside the sealing rim 12. Each tab 13 extends towards the low inside the side wall 9. The lower end 14 of each tab 13 protrudes from the side wall 9 axially opposite the wall upper 10, axially understood to be in the direction of the axis of the truncated cone formed by the side wall 9.

Each tab 13 is in the shape of an arc of a section transverse and is separated from the neighboring legs 13 by a slot 15 which extends over the entire length of the legs 13. Alternatively, one could design that one or more slots 15 extend only over part of the length of the legs 13 from their lower end 14. It however, one of the slots 15 extending to proximity of the upper wall 10 for a reason which will be explained below.

Between the legs 13 is defined a channel 16 extending over the entire length of said legs 13, whatever might be expected, again, that it does not extends only over part of their length from their end lower 14.

In Figure 1, we see that the plug 2 is separated from the body 1. The legs 13, which are relatively flexible in the transverse direction, are therefore represented in the free state. In this free state, their lower ends 14 are in a fictitious circle whose diameter is greater than that of the orifice 7 of the end piece 4. Thus, a user who unscrewed the plug 2 and completely separated from tip 4 has great difficulty in put the plug 2 back on said end piece 4, because the ends 14 of the tabs 13 occupy a larger diameter than that offered by the orifice 7 of the passage 6. The user is therefore very strongly encouraged not to recap the container with cap 2.

In the variant illustrated in Figure 3, the legs 13 have a longer length than in FIG. 1, which, at constant elasticity of the material forming them, allows a greater spacing of their lower ends 14 which can make it even more difficult attempted filling with cap 2.

On the contrary, in the variant illustrated in FIG. 4, the lower ends 14 of the legs 13 are substantially flush the lower end of the side wall 9 while having, well understood, a spacing such that they cannot enter, in the free state, in orifice 7. This variant is particularly advantageous if it is feared that a user does not try to close the container with the cap 2 in using an instrument such as a blade or pliers to tighten the lower ends 14 of the legs 13. The lower ends 14 legs 13 are bevelled by being shorter on their radial edge inner than on their outer radial edge. So during a possible attempt to recap the container, if the end of a tab 13 comes into contact contact with the upper edge 5 of the end piece 4, the tab 13 will tend to escape radially outwards and therefore outside orifice 7.

In the variant illustrated in FIG. 5, the plug 2 comprises a single leg 17 but the lower part of which is divided into several branches 18 deviating from each other downwards so that they have lower ends 19 similar to the ends lower 14 of the variants described above. We could still plan a leg 13 and a leg 17 with two branches 18, or else two legs 17 to two branches 18.

In the variant illustrated in FIG. 6, the plug 2 comprises legs 13 of very short length, significantly less than the length axial of the plug, and between which is fixed by fitting a tube plunger 26. The plunger tube 26 is generally cylindrical in shape with an upper end 26a formed at an angle and arranged in the channel 16 between the legs 13, and a lower end 26b beyond the lower end 9b of the side wall 9. Thus, in the closed state, the lower end 26b of the tube 26 is disposed not in the passage 6 but in the inner zone 1a of the bottle body 1. When opening, after rupture of the seal formed between the rim 12 and the upper edge 5 of the nozzle 4, before total disengagement of the threads 8 and 11, the gases in overpressure in the inner zone 1a of the bottle body 1 escape passing through the interior of the tube 26 then through one or more of the slots 15 separating the legs 13 then descending between the end piece 4 and the wall lateral 9. The upper end 26a cut at a bevel guarantees a communication between the inside of the tube 26 and at least one of the slots 15. If a drop of liquid is present in passage 6, decompression gases prior to the disengagement of threads 8 and 11 guarantees a no projection thanks to the internal pressure equalization and external. When the bottle is in the normal closed position, the stopper 2 being oriented upwards, the lower end 26b of the tube 26 must be locate at a level between the upper surface of the contained liquid in the body of the bottle 1 and the drop or part of liquid which, for capillarity, is likely to park in the passage 6 of the nozzle 4. This allows degassing without leaving the liquid.

In a variant, one could also provide that the legs 13, occupying a reduced radial space, are arranged inside the tube 26 whose upper end 26a will always be cut in a bevel to allow gas communication.

The steps for plugging the container are illustrated on the Figures 7 to 12. These capping steps take place in the production unit of the manufacturer of the product concerned, and are not physically available of the consumer, at his home.

In Figure 7, we see that we come to present the plug 2 above of the bottle 1, the tabs 13 being in the free state. Then, by a downward axial movement, the plug 2 is brought closer to the orifice 7 of end piece 4, see FIG. 8. Using a tool 20, the mutual approximation of the legs 13 so that they are part of a fictitious circle of diameter smaller than that of the opening 7 of the passage 6, see figure 9. The tool 20 can be in the form of a plurality of fingers, at least one per leg 13 or per branch 18, capable of moving radially each leg 13 or branch 18 inwards. Fingers the tool 20 can be in a shape resembling the diaphragm of a camera so as to tighten the legs 13 which whatever their number.

In Figure 10, we see that after tightening the legs 13 by tool 20, the axial movement of the plug 2 is continued downwards having the end 14 of the legs 13 in the orifice 7 and making it enter there slightly said ends 14.

In Figure 11, we see that we remove the tool 20, the legs 13 being retained in the upper part of passage 6. We then resume the axial downward movement until mutual engagement of threads 8 and 11. We drive the plug 2 in rotation to cause the screwing up the complete and watertight obturation as illustrated in figure 12.

The ends 14 of the legs 13 are then projecting inside of the body 1 below the shoulder 3.

The operation of the device upon opening is illustrated on the Figures 14 to 17. When the container is at least partially filled with liquid, a drop 21 of said liquid generally stays near the shoulder 3 due to a phenomenon of capillarity. In the case of a hair dye applicator, drop 21 forms in practically all cases insofar as the user shakes the container in order to cause the two components to mix. We can refer to document EP-A-0 528 707 for a more complete description of a two compartment packaging. The volume of the drop 21 will of course depend on the physico-chemical characteristics of the liquid, such as its viscosity, its surface tension, its hydrophilicity, etc.

In the case of a conventional plug, devoid of lugs 13, the drop forms in the upper end of the stopper, in direct contact with its upper wall and can occupy a large part of the passage of the mouthpiece.

As seen in Figure 14, with the plug 2 conforming to the invention, the drop 21 is formed under the shoulder 3 and under the legs 13. Thanks to the invention, the drop is kept axially away from orifice 7.

When you unscrew the cap 2, as illustrated in figure 15, said plug 2 rises slightly, which causes the separation of the sealing edge 12 with the upper edge 5 of the end piece 4 and the rupture of the seal.

If gases overpressure relative to the ambient atmosphere when opening are inside the body 1 of the container, these will escape through the slots 15 and / or through the channel 16 formed between the legs 13, then go through the slots 15 formed between the legs 13 to near the top wall 10, then escape between the threads 8 and 11. Since most of the volume of drop 21 is in an included area radially outside the ends 14 of the legs 13, the exhaust gases overpressure only causes a very small amount of liquid from drop 21 in channel 16. In addition, this very low amount of liquid tends by capillarity, to remain in the slots 15 formed between the legs 13 whose radial dimensions are smaller than those of channel 16. This very small amount of liquid can spread over the free surfaces of the legs 13 and of the interior surface of the passage 6 formed by the nozzle 5, free surfaces which define the slots 15 and the channel 16. Channel 16 will, in general, provide the largest share of the area spreading. The channel 16 also forms a means for withdrawing gases from distance of the drop which forms, for the most part, in a place radially and / or axially offset from the lower end of the channel 16 formed at the free end of the legs 13. The free section by which the gases escape is small enough that none significant amount of liquid does not come out of the outlet during this step. It is thus possible to sample gases without projection of liquid.

The phenomenon of depressurization therefore occurs in the position illustrated in FIG. 15, in which the threads 8 and 11 are still in engagement, which retains the plug 2 relative to the body 1 and prevents its projection while allowing the escape of gases. The depressurization having taken place, we continue to unscrew the plug 2 and then removes it axially, the tabs 13 sliding in the passage 6 of the endpiece 4. The closure means formed, here, by the legs 13 greatly reduces the space likely to be occupied by the liquid in passage 6, see figure 13.

In the position illustrated in Figure 16, we see that the remains of the drop 21 tend to spread over the wall of the passage 6 while being slightly driven by the legs 13. During the movement opening, the spreading area of the drop increases gradually. Indeed, the legs 13 leave a growing portion free of the inner surface of the nozzle 5, part which extends between the level of the lower end of the legs 13 in the closed state and their instantaneous level during said opening movement.

The inner surface of the end piece 5 is, in the embodiment illustrated, slightly frustoconical, orifice 7 having a diameter lower than that of the base of passage 6 near the shoulder. The legs 13 are forced to approach each other during said opening movement, which reduces the free cross-section for the liquid in the passage 6. In other words, the width of the slots 15 is reduces which causes a spin effect with a drop of part of the gout in the body 1.

At the end of movement, the plug 2 is completely separated from the body 1, the ends 14 of the legs 13 crossing the orifice 7. The legs 13 then resume their free form by occupying dimensions transverse greater than those of orifice 7, which prevents the reuse of the plug 2 on the body 1, see FIG. 17. It can therefore be seen that the opening of the container occurs without projection of the liquid contained in the container, insofar as a possible drop of liquid is discarded areas through which overpressure gases can escape. In in other words, the legs 13 make it possible to fetch the gases by overpressure beyond drop 21 and allow their escape after rupture of the seal and before complete separation of the plug 2 and of body 1, hence an extremely safe and clean opening of the container. Yes exhaust gas causes a small drop of liquid, it spreads over surfaces provided for this purpose and which prevent projection.

In the embodiment illustrated in Figure 18, the legs 13 have been replaced by a single protrusion 22 which occupies substantially all the space formed in the end piece 4, and comes flush with the lower surface 24 of the shoulder 25 which here must be of dimension relatively large in the radial direction relative to the axis of the plug. This surface of the shoulder and the surface of the lower end 23 of the protuberance 22 provides an almost smooth surface on which none drop of liquid does not form. In general, only a film of liquid of very thin will remain on this surface after mixing the constituents of dye and shaking by the user. When opening, the rising to the top of the protuberance 22 causes only a very small amount of liquid from the film that formed, this amount tending to spread during movement along the inner wall of the passage 6, which further reduces the quantity likely to be projected during depressurization.

In this embodiment, the seal between the plug 2 and the body 1 can be formed either, as in the other embodiments, near the top wall of the cap or on the contrary near from the lower end 23 of the protuberance 22.

Thanks to the invention, there is a stopper and a container of economical and safe and clean to use. The cap can be fixed by fitting or screwing. The risk of projection of liquid in the container is removed when used normal. In other words, at least part of the passage 6, a liquid tight structure to prevent its stay in said part and permeable to gas to depressurize the container. The combination of liquid tightness and gas permeability provides great advantages.

The plug may, in addition, be provided with means preventing or at the very least very annoying its reuse on the container, which guarantees a single use of the product contained in the container by prompting the user to throw away said container after first use. Finally, no additional parts are added, either to the cap or to the container, both of which can be formed in one piece by molding.

Claims (14)

Liquid storage device, in particular capillary, comprising a container (1) and a removable cap (2), the cap being of the type comprising a gripping part and a sealing part able to cooperate with a tip (4) of the container, the said tip forming a passage (6) between an interior zone of the container and the exterior, a free end of the nozzle forming a liquid outlet orifice (7), characterized by the fact that it comprises a means for holding the liquid contained in the container at an axial distance from the orifice of the nozzle, the plug in closed position. Device according to claim 1, characterized in that it comprises means capable, in the closed position of the plug, to form inside the passage (6) a barrier for the liquid, said barrier being formed at an axial distance from the liquid outlet orifice (7). Device according to claim 1 or 2, characterized in that it has a surface capable of spreading, by adsorption, a portion of the liquid away from the orifice of the nozzle, when the device is opened. Device according to any one of Claims 1 to 3, characterized by the fact that means (8, 11) for fixing the plug to the container are provided, and that the cap comprises means for allow pressure balance in the interior of the container and pressure outside when opening before the means of fixing the cap on the container are deactivated. Device according to any one of Claims 1 to 4, characterized by the fact that the plug comprises a part extending substantially between the orifice of the nozzle and an opposite end of the said end piece in communication with the interior zone of the container, in position closed. Device according to claim 5, characterized in that said part comprises at least one channel (16) able to set up communicates the interior area of the container and an area bounded by the plug and in communication with the outside. Device according to claim 5 or 6, characterized in that that said part comprises at least two tabs (13) capable of closing at less partially the tip. Device according to claims 6 and 7, characterized by the that the channel (16) is formed between the legs. Device according to claim 7 or 8, characterized in that that the legs are separated by slots (15). Device according to any one of Claims 7 to 9, characterized in that the legs are of length substantially equal to that of the nozzle. Device according to any one of Claims 7 to 9, characterized by the fact that the legs are substantially long greater than that of the end piece and protrude into the interior area of the closed container. Device according to any one of Claims 4 to 7, characterized by the fact that the pressure balance means are capable of cross a portion of liquid retained in the nozzle by capillary action. Device according to claim 12, characterized in that that it comprises a tube of length greater than that of the plug, arranged inside said plug and opening at one end in the vicinity of the orifice (7) of the endpiece (4) in the closed position and at the other end in the inner area of the container. Removable cap for container according to any one of previous claims.

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