EP1004523B1 - Dispensing valve for pressurised fluid - Google Patents

Dispensing valve for pressurised fluid Download PDF

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Publication number
EP1004523B1
EP1004523B1 EP99402579A EP99402579A EP1004523B1 EP 1004523 B1 EP1004523 B1 EP 1004523B1 EP 99402579 A EP99402579 A EP 99402579A EP 99402579 A EP99402579 A EP 99402579A EP 1004523 B1 EP1004523 B1 EP 1004523B1
Authority
EP
European Patent Office
Prior art keywords
valve
container
valve body
edge
mounting means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99402579A
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German (de)
French (fr)
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EP1004523A1 (en
Inventor
Pierre-André Lasserre
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LOreal SA
Original Assignee
LOreal SA
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Filing date
Publication date
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Publication of EP1004523A1 publication Critical patent/EP1004523A1/en
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Publication of EP1004523B1 publication Critical patent/EP1004523B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/46—Tilt valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/42—Filling or charging means
    • B65D83/425—Delivery valves permitting filling or charging

Definitions

  • the present invention relates to a dispensing valve according to the preamble of claim 1 of a product, especially a liquid, to a container intended to contain this product and equipped with this valve according to the preamble of claim 17 as well as to a process for pressurized packaging of such a container under the action of a propellant gas according to claim 20.
  • the valve according to the invention is designed to simplify its mounting on such a container and to facilitate, from the point from an industrial point of view, pressurization.
  • Such a container commonly called an aerosol dispenser
  • a fluid product such as a cosmetic, dermatological, household, food product or a workshop product, such as for example a hairspray or hair mousse, disinfectant spray, lubricant spray, paint or cleaning product.
  • the valve fitted to this type of aerosol container comprises a control rod disposed axially in a valve body.
  • the control rod has a passage for the product to be dispensed.
  • the valve comprises sealing means, capable of closing said passage.
  • the control rod can be moved elastically by lateral tilting of the rod, in the valve body between a first position for closing the passage, where the rod occupies a position, in which the passage is isolated from the product under pressure by the means sealing, and a second open position. In this second position, the rod is inclined relative to the axis of the valve body, said passage being in communication with the product under pressure, to allow the product to be dispensed.
  • the valve further comprises elastic return means, urging the rod into said first position.
  • the opening of the valve can also be caused by axial depression, which is advantageous for filling the container on a packaging line.
  • the packaging of an aerosol product is carried out as follows: through the open orifice of a container, the product to be dispensed, generally liquid, is introduced, then the container is closed by crimping a valve-holder cup fitted with a valve. In order to pressurize the product, an appropriate quantity of propellant is then injected through the valve stem, keeping the latter in a depressed position.
  • a valve of the aforementioned kind is described in patent application EP-A-0 850 851, in the name of the applicant. In practice, such a valve works satisfactorily. However, the applicant has noted that a distributor equipped with such a valve has a drawback, namely that the speed of filling with a propellant on an industrial packaging tool leaves something to be desired.
  • Document GB-A-2 143 590 describes a valve which makes it possible to increase the speed of filling with a propellant.
  • the valve has a passage, larger than that passing through the valve stem, through which the thruster is introduced.
  • the passage is formed when the valve stem is pushed in, between the upper surface of the internal seal ensuring the tightness of the valve mechanism and the valve body.
  • the applicant also sought a solution to make it faster and easier to pressurize an aerosol container, in particular on an automatic packaging line.
  • the present invention aims to remedy the drawbacks of the valve described in document EP-A-0 850 851, while proposing a valve of simple construction and easy to fix on any type of pressure container.
  • the cost price of the valve targeted by the invention must be advantageous.
  • the invention relates to a dispensing valve, intended to equip a container containing a product pressurized by means of a propellant gas, comprising a valve body made of elastomeric material, and activation means for, in response to an actuation command, passing the valve from a closed position to a position authorizing the dispensing of the product via an outlet passage of said valve body, said valve being, in the absence of an actuation command, constrained in the closed position, said valve body comprising first mounting means to allow mounting of the valve, in a first position, in which the valve body defines with an edge of the container, at least one passage in communication with the container, so as to allow the filling of the container with propellant gas, and second mounting means, to allow the mounting of the valve, in a second position, in which the valve body is mounted sealingly on said edge of the container.
  • the first and second mounting means are arranged such that, in the first position, the valve is positioned at a first axial height relative to the container, and that said valve is, in said second position, arranged at a second axial height relative to the container.
  • the valve body has a suitable profile, after filling the container with propellant gas, to promote the passage of the valve from the first position to the second.
  • the first and second mounting means are disposed on the valve body, at different axial heights, the first mounting means being disposed between the second mounting means and a lower end of the body of the valve. valve, said valve body having between said first and second means, a decreasing section in the direction of the first means.
  • the second mounting means may be formed, for example, of an annular groove, formed on the exterior surface of the valve body, and able to cooperate, in a sealed manner, with a corresponding edge of the container, for example with the edge of an opening made at the top of the container.
  • the containers which can be used for mounting this valve can be chosen from the containers usually used, for example aluminum, tin or plastic cans, having a generally cylindrical shape.
  • the container may have an open end, a free edge of which delimits an orifice, capable of cooperating directly with the means for mounting the valve body.
  • the container may be provided with a cup crimped onto the container provided with said orifice, in which the valve body is engaged.
  • any elastomeric material having a Shore A hardness of between 30 and 70 can be provided, for example natural or synthetic rubbers, in particular thermoplastic or vulcanizable elastomers.
  • the elasticity of the material constituting the valve body ensures, on the one hand the deformation necessary for mounting it on the container, according to the first position and its passage to the second position. On the other hand, the elasticity of this material also ensures sufficient sealing in the second position, to withstand the internal pressure of the container.
  • these can also be formed of an annular groove, formed on the outer surface of the valve body and able to cooperate with the corresponding edge of the container, said groove being interrupted by at least one passage, formed at outside the valve body and opening into the interior of the container, said passage being of depth greater than the depth of said groove.
  • said passage is oriented substantially perpendicular to said groove.
  • the first and second mounting means are able to cooperate by snap-fastening with said edge of the container.
  • the valve can be a valve whose opening is ensured by lateral tilting of a control rod crossed by said outlet passage and constituting the activation means, this rod being mounted in an outlet channel, formed inside the valve body and opening into an internal chamber.
  • the outlet channel has a longitudinal axis
  • the valve stem being provided inside the outlet channel with a profile capable of cooperating with a profile complementary to the channel of outlet, to define an articulation substantially around a determined point, so that whatever the angular position of the rod relative to the longitudinal axis, said rod is in sealed annular contact with the channel.
  • the rod has inside the outlet channel, an annular portion projecting from the rest of the rod, and whose cross section is spherical, having a geometric center, the channel outlet having a portion, forming a recess of a shape complementary to that of the protruding portion, and capable of receiving, in a sealed manner, said protruding portion, the point of articulation of the rod substantially coinciding with the geometric center.
  • the activation means to selectively put the internal valve chamber in communication with the outside of the valve, advantageously comprise a sealing ring, integral with the rod, urged by elastic return means, in sealing contact on an annular seat formed by said body.
  • the outlet passage of the rod opens into the internal valve chamber via a passage, passing through the rod radially and located at the level of the sealing ring.
  • the rod and the sealing ring are advantageously made of a rigid thermoplastic material, such as polypropylene or polyoxymethylene (POM).
  • a rigid thermoplastic material such as polypropylene or polyoxymethylene (POM).
  • the elastic return means consist of at least one elastomeric stud carried by an internal wall of the valve chamber and integral with it, this (or these) stud (s) being in elastic support against part of the rod carrying the sealing ring.
  • a valve comprising this kind of return means is described, for example, in the aforementioned European patent application EP-A-0 850 851.
  • Another object of the invention consists of a container for the distribution under pressure of a pressurized product by means of a propellant gas, this container being equipped with a valve as defined above.
  • this valve is mounted on the container via a cup having an opening whose inner edge is intended to come into engagement with said first or second valve mounting means.
  • the cup is crimped onto the container.
  • the product is introduced through the opening of the container used for mounting the valve.
  • the passage of the valve from the filling position to the dispensing position is effected by axially moving the valve relative to the container. This procedure greatly facilitates the automation of filling the tank on a packaging line.
  • a plurality of passages are arranged in a regular manner all around the valve body, the filling of the container with gas being effected by covering the valve by means of a gas inlet cane, said cane having an edge, capable of coming into tight contact all around the valve with a surface of the container.
  • this surface of the container is part of a valve-holder cup mounted on the container, this cup having an opening, the edge of which is able to cooperate with the first and second valve mounting means.
  • valve body which has just been described has other advantages, compared to a conventional valve.
  • the valve body is given both sufficient elasticity to be able to directly mount the operating rod in the valve body, without the need to assemble several parts.
  • the return means are produced in the form of studs carried by one of the walls delimiting the internal chamber, these studs can be deformed by crushing, when the valve is actuated. In this way, it is possible to avoid having to resort to a metal return spring capable of coming into contact with the product to be dispensed, risking if necessary, degrading the product.
  • the valve 1 according to the invention is intended to equip a dispenser provided with a reservoir 3.
  • the reservoir is intended to contain a product liquid, such as a hair spray, the reservoir being pressurized by the action of a propellant gas G.
  • the valve 1 comprises a body 2 having a central portion 2a in a truncated cone with an axis of revolution A, and an operating rod 11, of generally cylindrical shape, provided with an X axis In the valve rest position, the axes A and X are merged.
  • the rod 11 is made in two parts 22 and 30 (see FIG. 3) in a rigid thermoplastic material, such as polyoxy methylene (POM).
  • POM polyoxy methylene
  • the valve body 2 is made of an elastically deformable material, for example an elastomer of nitrile rubber, whose Shore A hardness is advantageously in the range between 30 and 70.
  • the body has a large base 2b and a small base 2c, connected by the generally frustoconical portion 2a and a cylindrical portion 2d.
  • valve body 2 Inside the valve body 2 is formed an internal chamber 4 of circular section, delimited by peripheral walls 4a, 4b, 4c, 4d.
  • the wall 4a is cylindrical in shape and is connected to a frustoconical portion 4b, the bottom of which opens towards the reservoir 3 by an axial inlet channel 5 of product P.
  • the valve body 2 substantially at a third of its height (starting from the lower end of the valve body), comprises an annular groove 16 delimited in part by an annular bead 16a.
  • the position of the groove 16 on the valve body is listed by the reference H 1.
  • the annular groove 16 is interrupted by several zones in depression 18, regularly distributed and generally 2 to 4 in number. These zones 18 form open passages , when the valve body is mounted in the opening 7 of the cup 8, in the position H 1 , that is to say in a position where the edge of the opening 7 cooperates with the annular groove 16. In in other words, in this position, the passages 18 open on either side of the cup 8. In this position, the reservoir can be filled with propellant G from the outside, via the passages 18. It is at note that the depth of each passage 18 is greater than the depth of the groove 16.
  • the annular groove 16 constitutes the first means of mounting the valve.
  • the valve body comprises, between the cylindrical part 2d and the frustoconical part 2a of the body 2, at a height H 2 , second mounting means, produced in the form of an annular groove 14.
  • the axial intake channel 5, intended for the admission of the product to be dispensed, is formed in the center of the small base 2b and opens into the chamber 4.
  • This intake channel 5 is connected to a dip tube 19, the free end (not shown) plunges permanently into the product, via a connection tube 32 carried by the second part of the control rod 11.
  • the cylindrical internal wall 4a of the valve body is connected to an annular sealing zone 4c situated in a plane perpendicular to the axis A.
  • the annular zone 4c is extended upwards by a second frustoconical portion 4d, facilitating the tilting of the valve stem 11.
  • the top of the frustoconical portion 4d opens into a recess 13 of substantially spherical shape.
  • This recess 13 is part of an outlet channel 10, arranged in the extension of the intake channel 5, the channel 10 meanwhile, connecting the internal chamber 4, to the outside.
  • the outlet channel 10 is crossed by the first part 22 of the rod 11, the external wall of the valve stem 11 being in perfect sealing contact against the wall of the valve body delimiting the outlet channel 10.
  • the stem 11 has an annular portion 15 projecting from the rest of the rod, and whose axial cross section is spherical in shape, complementary to the shape of the recess 13 and having a geometric center Q.
  • the geometric center Q constitutes a tilting point of the rod when the valve is actuated.
  • the first part 22 of the valve stem 11 has a central distribution channel 23 passing through the stem from the emerging end 11a to a height situated substantially at the height of the annular zone 4c. At this height, the central channel 23 opens into a passage 25 passing through the rod radially and ending in the upper part of the chamber 4.
  • the first part 22 of the rod comprises, in addition a cylindrical end 24, provided with a peripheral bead 26. This bead 26 is able to cooperate with a complementary annular groove 33 formed inside a blind chimney 34, provided on the upper end of the second part 30 of the valve stem.
  • the blind chimney 34 is surrounded by a cylindrical crown 9, of larger diameter than the chimney 34 and of greater height.
  • the free edge 9a of the crown has a chamfer, thus forming a more or less sharp edge, intended to bear on the annular zone 4c of the chamber 4, thus forming a seat.
  • the second part comprises a portion in a truncated cone 30a connected to the crown 9 by a cylindrical portion 30b and whose section decreases towards its lower end 30d.
  • the frustoconical surface 30a of the valve stem has a plurality of grooves 30c, oriented in a plane passing through the axis X.
  • the lower end 30d of the frustoconical portion 30a is extended by the connection tube 32 mentioned above.
  • a passage 36 leading radially in the grooves 30c In the junction zone between the frustoconical portion 30a and the connection tube 32 is made a passage 36 leading radially in the grooves 30c.
  • the center of the radial passage 36 opens into a suction channel 38, defined inside the tube 32, in communication with the dip tube 19.
  • the elastic support of the crown 9 against the seat 4c is provided by several studs or bulges 20 of small dimension, distributed regularly on the internal frustoconical wall 4b of the valve chamber 4 and in elastic support against the frustoconical part 30a of the rod valve 11.
  • the free edge 9a of the crown 9 enters by some 10 th of mm in the seat 4c and creates a perfect seal between the valve chamber and the distribution channel.
  • the emerging part of the valve stem has a flange 29, serving as a support for a tool, during mounting of the stem in the valve body.
  • valve 1 The mounting of the valve 1 is simple to carry out. After assembly of the two stem parts 22 and 30, the valve stem is introduced axially into the valve body through the outlet channel 10, in this way, in two successive stages, as will be seen later.
  • the introduction of the rod into the valve body is favored, on the one hand by the frustoconical portion 30c of the valve rod 11, and on the other hand by the elasticity of the elastomeric material constituting the valve body 2.
  • the axial stroke of the valve stem 11 is limited by the flange 29, and the stem is positioned correctly in the valve chamber 4. Note that unlike some conventional valves, no ball or spring is necessary to operate this valve.
  • the cup 8 is introduced into the reservoir 3, onto which has been previously fixed, for example by crimping, an appropriate quantity of product P.
  • the valve is positioned in the filling position H 1 . In this position, the edge 7 of the cup is in engagement with the groove 16.
  • an inlet cane C of propellant gas provided for the delivery of a propellant gas G in the container, on the cup , in a zone 40 surrounding the valve.
  • the free end 38 of the filling rod C is able to be placed, in a sealed manner, on the cup 8.
  • it is chooses the internal diameter of the filling cane C slightly greater than the largest diameter of the valve body.
  • An appropriate quantity of propellant G is then introduced into the interior of the container, via the passages 18.
  • a mounting element (not shown) can be provided, axially movable at the inside the filling rod and able to be placed on the upper face 2b of the valve body and push the latter towards the container.
  • this mounting element is tubular, so as to be able to receive at its hollow center the emerging part 11a of the valve stem.
  • the rod 11 is inclined relative to the axis A. This inclination can be performed in any radial direction relative to the axis A, as symbolized in Figure 4 by the arrows B.
  • the axis X of the rod is inclined relative to the axis A of the body valve, the angle formed between the two axes being typically of the order of 2 ° to 15 °.
  • part of the crown 9 moves away from the seat 4c.
  • the stud (s) 20 which is (are) on the frusto-conical wall 4b, on the side opposite to the zone of separation of the crown, is (are) crushed by the part frustoconical 30a of the stem.
  • four pads 20 of elongated shape were made, about 1 mm high, about 1.5 mm wide and about 1.5 mm long.
  • the product P is then conveyed into the chamber 4 via the dip tube 19, the suction channel 38, the radial passage 36, the grooves 30c. Then, the product P is conveyed by the area spaced from the crown 9 in the passage 25 to arrive in the distribution channel 23.
  • valve stem 11 Conventionally, the emerging end of the valve stem 11 is engaged in an actuating member also ensuring the distribution of the product.
  • actuating member also ensuring the distribution of the product.

Abstract

The valve which fits a container (3) containing a product pressurized by a propellant gas (G) comprises an elastomer valve body (2). It has activation members which in response to an activating control move the valve from a closed to an open position allowing dispensing of the product through an outlet passage (23). The valve body has first mounting members (16) which enable it to be mounted in a first position (H1) in which the valve body defines with an edge (7) of the container a passage (18) in communication with the container so as to allow filling the container with a propellant gas. Second mounting members (14) enable the valve to be mounted in a second position (H2) in which the valve body is sealed on the container edge.

Description

La présente invention se rapporte à une valve de distribution selon le préambule de la revendication 1 d'un produit, notamment liquide, à un récipient destiné à contenir ce produit et équipé de cette valve selon le préambule de la revendication 17 ainsi qu'à un procédé de conditionnement sous pression d'un tel récipient sous l'action d'un gaz propulseur selon la revendication 20. Plus particulièrement, la valve conforme à l'invention est conçue pour simplifier son montage sur un tel récipient et pour faciliter, du point de vue industriel, la mise sous pression . Un tel récipient, communément appelé distributeur aérosol, est destiné, notamment, au conditionnement et à la distribution d'un produit fluide, tel qu'un produit cosmétique, dermatologique, ménager, alimentaire ou un produit d'atelier, tel que par exemple une laque ou une mousse capillaires, un spray désinfectant, un spray lubrifiant, une peinture ou un produit de nettoyage.The present invention relates to a dispensing valve according to the preamble of claim 1 of a product, especially a liquid, to a container intended to contain this product and equipped with this valve according to the preamble of claim 17 as well as to a process for pressurized packaging of such a container under the action of a propellant gas according to claim 20. More particularly, the valve according to the invention is designed to simplify its mounting on such a container and to facilitate, from the point from an industrial point of view, pressurization. Such a container, commonly called an aerosol dispenser, is intended, in particular, for the packaging and distribution of a fluid product, such as a cosmetic, dermatological, household, food product or a workshop product, such as for example a hairspray or hair mousse, disinfectant spray, lubricant spray, paint or cleaning product.

La valve équipant ce genre de récipients aérosol comprend une tige de commande disposée axialement dans un corps de valve. La tige de commande présente un passage pour le produit à distribuer. La valve comprend des moyens d'étanchéité, aptes à fermer ledit passage. La tige de commande peut être déplacée élastiquement par basculement latéral de la tige, dans le corps de valve entre une première position d'obturation du passage, où la tige occupe une position, dans laquelle le passage est isolé du produit sous pression par les moyens d'étanchéité, et une deuxième position d'ouverture. Dans cette seconde position, la tige est inclinée par rapport à l'axe du corps de valve, ledit passage étant en communication avec le produit sous pression, pour permettre la distribution du produit. La valve comprend en outre des moyens élastiques de rappel, sollicitant la tige dans ladite première position. Par ailleurs, l'ouverture de la valve peut être provoquée également, par enfoncement axial, ce qui est intéressant pour le remplissage du récipient sur une chaîne de conditionnement.The valve fitted to this type of aerosol container comprises a control rod disposed axially in a valve body. The control rod has a passage for the product to be dispensed. The valve comprises sealing means, capable of closing said passage. The control rod can be moved elastically by lateral tilting of the rod, in the valve body between a first position for closing the passage, where the rod occupies a position, in which the passage is isolated from the product under pressure by the means sealing, and a second open position. In this second position, the rod is inclined relative to the axis of the valve body, said passage being in communication with the product under pressure, to allow the product to be dispensed. The valve further comprises elastic return means, urging the rod into said first position. Furthermore, the opening of the valve can also be caused by axial depression, which is advantageous for filling the container on a packaging line.

Généralement, le conditionnement d'un produit aérosol est effectué de la manière suivante : par l'orifice ouvert d'un récipient, on introduit le produit à distribuer, généralement liquide, puis on ferme le récipient par sertissage d'une coupelle porte-valve équipée d'une valve. Pour effectuer la mise sous pression du produit, on injecte alors une quantité appropriée de gaz propulseur par la tige de valve, en maintenant celle-ci dans une position enfoncée.Generally, the packaging of an aerosol product is carried out as follows: through the open orifice of a container, the product to be dispensed, generally liquid, is introduced, then the container is closed by crimping a valve-holder cup fitted with a valve. In order to pressurize the product, an appropriate quantity of propellant is then injected through the valve stem, keeping the latter in a depressed position.

Une valve du genre précité est décrite dans la demande de brevet EP-A-0 850 851, au nom du demandeur. Dans la pratique, une telle valve fonctionne de manière satisfaisante. Cependant, le demandeur a constaté qu'un distributeur équipé d'une telle valve présente un inconvénient, à savoir que la vitesse de remplissage en propulseur sur un outillage de conditionnement industriel laisse à désirer.A valve of the aforementioned kind is described in patent application EP-A-0 850 851, in the name of the applicant. In practice, such a valve works satisfactorily. However, the applicant has noted that a distributor equipped with such a valve has a drawback, namely that the speed of filling with a propellant on an industrial packaging tool leaves something to be desired.

Le document GB-A-2 143 590 décrit une valve qui permet d'augmenter la vitesse de remplissage en propulseur. A cet effet, la valve comporte un passage, plus important que celui traversant la tige de valve, au travers duquel est introduit le propulseur. Le passage est formé lorsque l'on enfonce la tige de valve, entre la surface supérieure du joint interne assurant l'étancheité du mécanisme de valve et le corps de valve.Document GB-A-2 143 590 describes a valve which makes it possible to increase the speed of filling with a propellant. To this end, the valve has a passage, larger than that passing through the valve stem, through which the thruster is introduced. The passage is formed when the valve stem is pushed in, between the upper surface of the internal seal ensuring the tightness of the valve mechanism and the valve body.

Le demandeur a également cherché une solution pour rendre plus rapide et plus aisée la mise sous pression d'un récipient aérosol, notamment sur une chaîne de conditionnement automatique.The applicant also sought a solution to make it faster and easier to pressurize an aerosol container, in particular on an automatic packaging line.

La présente invention vise à remédier aux inconvénients de la valve décrite dans le document EP-A-0 850 851, tout en proposant une valve de construction simple et facile à fixer sur tout type de récipient sous pression. De plus, le prix de revient de la valve visée par l'invention doit être avantageux.The present invention aims to remedy the drawbacks of the valve described in document EP-A-0 850 851, while proposing a valve of simple construction and easy to fix on any type of pressure container. In addition, the cost price of the valve targeted by the invention must be advantageous.

Ainsi, l'invention, se rapporte à une valve de distribution, destinée à équiper un récipient contenant un produit pressurisé au moyen d'un gaz propulseur, comportant un corps de valve en matériau élastomérique, et des moyens d'activation pour, en réponse à une commande d'actionnement, faire passer la valve d'une position fermée à une position autorisant la distribution du produit via un passage de sortie dudit corps de valve, ladite valve étant, en l'absence de commande d'actionnement, contrainte en position fermée, ledit corps de valve comprenant des premier moyens de montage pour permettre le montage de la valve, dans une première position, dans laquelle le corps de valve définit avec un bord du récipient, au moins un passage en communication avec le récipient, de manière à permettre le remplissage du récipient en gaz propulseur, et des second moyens de montage, pour permettre le montage de la valve, dans une seconde position, dans laquelle le corps de valve est monté de façon étanche sur ledit bord du récipient.Thus, the invention relates to a dispensing valve, intended to equip a container containing a product pressurized by means of a propellant gas, comprising a valve body made of elastomeric material, and activation means for, in response to an actuation command, passing the valve from a closed position to a position authorizing the dispensing of the product via an outlet passage of said valve body, said valve being, in the absence of an actuation command, constrained in the closed position, said valve body comprising first mounting means to allow mounting of the valve, in a first position, in which the valve body defines with an edge of the container, at least one passage in communication with the container, so as to allow the filling of the container with propellant gas, and second mounting means, to allow the mounting of the valve, in a second position, in which the valve body is mounted sealingly on said edge of the container.

Selon un aspect intéressant de l'invention, les premier et second moyens de montage sont disposés de telle sorte que, dans la première position, la valve soit positionnée selon une première hauteur axiale par rapport au récipient, et que ladite valve soit, dans ladite seconde position, disposée à une seconde hauteur axiale par rapport au récipient. Ainsi, par un simple déplacement axial de la valve sur le récipient, après remplissage en gaz propulseur, celle-ci peut passer de la première à la seconde position. A cet effet, avantageusement, le corps de valve présente un profil apte, après remplissage du récipient en gaz propulseur, à favoriser le passage de la valve de la première position à la seconde.According to an interesting aspect of the invention, the first and second mounting means are arranged such that, in the first position, the valve is positioned at a first axial height relative to the container, and that said valve is, in said second position, arranged at a second axial height relative to the container. Thus, by a simple axial displacement of the valve on the container, after filling with propellant gas, it can pass from the first to the second position. To this end, advantageously, the valve body has a suitable profile, after filling the container with propellant gas, to promote the passage of the valve from the first position to the second.

Ainsi, selon un mode de réalisation avantageux, les premier et second moyens de montage sont disposés sur le corps de valve, à des hauteurs axiales différentes, les premier moyens de montage étant disposés entre les second moyens de montage et une extrémité inférieure du corps de valve, ledit corps de valve présentant entre lesdits premier et second moyens, une section décroissante en direction des premier moyens.Thus, according to an advantageous embodiment, the first and second mounting means are disposed on the valve body, at different axial heights, the first mounting means being disposed between the second mounting means and a lower end of the body of the valve. valve, said valve body having between said first and second means, a decreasing section in the direction of the first means.

Les second moyens de montage peuvent être formés par exemple, d'une gorge annulaire, formée sur la surface extérieure du corps de valve, et apte à coopérer, de manière étanche, avec un bord correspondant du récipient, par exemple avec le bord d'un orifice pratiqué au sommet du récipient.The second mounting means may be formed, for example, of an annular groove, formed on the exterior surface of the valve body, and able to cooperate, in a sealed manner, with a corresponding edge of the container, for example with the edge of an opening made at the top of the container.

Les récipients utilisables pour le montage de cette valve peuvent être choisis parmi les récipients habituellement utilisés, par exemple les bidons en aluminium, en fer blanc ou en matière plastique, présentant une forme généralement cylindrique'. A cet effet, le récipient peut comporter une extrémité ouverte dont un bord libre délimite un orifice, apte à coopérer directement avec les moyens de montage du corps de valve. Alternativement, le récipient peut être muni, d'une coupelle sertie sur le récipient pourvu dudit l'orifice, dans lequel est engagé le corps de valve.The containers which can be used for mounting this valve can be chosen from the containers usually used, for example aluminum, tin or plastic cans, having a generally cylindrical shape. To this end, the container may have an open end, a free edge of which delimits an orifice, capable of cooperating directly with the means for mounting the valve body. Alternatively, the container may be provided with a cup crimped onto the container provided with said orifice, in which the valve body is engaged.

Pour la réalisation du corps de valve, on peut prévoir tout matériau élastomérique présentant une dureté Shore A comprise entre 30 et 70, par exemple les caoutchoucs naturels ou synthétiques, notamment les élastomères thermoplastiques ou vulcanisables. Ainsi, l'élasticité du matériau constitutif du corps de valve assure, d'une part la déformation nécessaire au montage de celui-ci sur le récipient, suivant la première position et son passage vers la seconde position. D'autre part, l'élasticité de ce matériau assure, également, une étanchéité suffisante dans la seconde position, pour résister à la pression interne du récipient.For the production of the valve body, any elastomeric material having a Shore A hardness of between 30 and 70 can be provided, for example natural or synthetic rubbers, in particular thermoplastic or vulcanizable elastomers. Thus, the elasticity of the material constituting the valve body ensures, on the one hand the deformation necessary for mounting it on the container, according to the first position and its passage to the second position. On the other hand, the elasticity of this material also ensures sufficient sealing in the second position, to withstand the internal pressure of the container.

Quant aux premier moyens de montage, ceux peuvent être formés également d'une gorge annulaire, formée sur la surface extérieure du corps de valve et apte à coopérer avec le bord correspondant du récipient, ladite gorge étant interrompue par au moins un passage, formé à l'extérieur du corps de valve et débouchant à l'intérieur du récipient, ledit passage étant de profondeur supérieure à la profondeur de ladite gorge. Avantageusement, ledit passage est orienté sensiblement perpendiculairement à ladite gorge.As for the first mounting means, these can also be formed of an annular groove, formed on the outer surface of the valve body and able to cooperate with the corresponding edge of the container, said groove being interrupted by at least one passage, formed at outside the valve body and opening into the interior of the container, said passage being of depth greater than the depth of said groove. Advantageously, said passage is oriented substantially perpendicular to said groove.

Dans ce cas, avantageusement, les premier et second moyens de montage sont aptes à coopérer par encliquetage avec ledit bord du récipient.In this case, advantageously, the first and second mounting means are able to cooperate by snap-fastening with said edge of the container.

Selon un autre aspect de l'invention, la valve peut être une valve dont l'ouverture est assurée par basculement latéral d'une tige de commande traversée par ledit passage de sortie et constituant les moyens d'activation, cette tige étant montée dans un canal de sortie, formé à l'intérieur du corps de valve et débouchant dans une chambre interne.According to another aspect of the invention, the valve can be a valve whose opening is ensured by lateral tilting of a control rod crossed by said outlet passage and constituting the activation means, this rod being mounted in an outlet channel, formed inside the valve body and opening into an internal chamber.

Selon un aspect particulier de l'invention, dans ce cas, le canal de sortie présente un axe longitudinal, la tige de valve étant pourvue à l'intérieur du canal de sortie d'un profil apte à coopérer avec un profil complémentaire du canal de sortie, pour définir une articulation sensiblement autour d'un point déterminé, de sorte que quelle que soit la position angulaire de la tige par rapport à l'axe longitudinal, ladite tige soit en contact annulaire étanche avec le canal.According to a particular aspect of the invention, in this case, the outlet channel has a longitudinal axis, the valve stem being provided inside the outlet channel with a profile capable of cooperating with a profile complementary to the channel of outlet, to define an articulation substantially around a determined point, so that whatever the angular position of the rod relative to the longitudinal axis, said rod is in sealed annular contact with the channel.

Selon un mode de réalisation préféré, la tige présente à l'intérieur du canal de sortie, une portion annulaire formant saillie par rapport au reste de la tige, et dont une section transversale est de forme sphérique, présentant un centre géométrique, le canal de sortie ayant une portion, formant un renfoncement de forme complémentaire à celle de la portion formant saillie, et apte à recevoir, de manière étanche, ladite portion formant saillie, le point d'articulation de la tige coïncidant sensiblement avec le centre géométrique.According to a preferred embodiment, the rod has inside the outlet channel, an annular portion projecting from the rest of the rod, and whose cross section is spherical, having a geometric center, the channel outlet having a portion, forming a recess of a shape complementary to that of the protruding portion, and capable of receiving, in a sealed manner, said protruding portion, the point of articulation of the rod substantially coinciding with the geometric center.

Les moyens d'activation, pour sélectivement mettre en communication la chambre de valve interne avec l'extérieur de la valve, comprennent avantageusement une couronne d'étanchéité, solidaire de la tige, sollicitée par des moyens de rappel élastiques, en appui de façon étanche sur un siège annulaire formé par ledit corps.The activation means, to selectively put the internal valve chamber in communication with the outside of the valve, advantageously comprise a sealing ring, integral with the rod, urged by elastic return means, in sealing contact on an annular seat formed by said body.

Selon un mode de réalisation, le passage de sortie de la tige débouche dans la chambre de valve interne par l'intermédiaire d'un passage, traversant la tige radialement et situé au niveau de la couronne d'étanchéité.According to one embodiment, the outlet passage of the rod opens into the internal valve chamber via a passage, passing through the rod radially and located at the level of the sealing ring.

Quant à la réalisation de la tige et de la couronne d'étanchéité, elles sont réalisées avantageusement, en un matériau thermoplastique rigide, tel que du polypropylène ou du polyoxyméthylène (POM).As for the production of the rod and the sealing ring, they are advantageously made of a rigid thermoplastic material, such as polypropylene or polyoxymethylene (POM).

Selon un autre aspect de l'invention, les moyens de rappel élastique sont constitués par au moins un plot élastomérique porté par une paroi interne de la chambre de valve et solidaire de celle-ci, ce (ou ces) plot(s) étant en appui élastique contre une partie de la tige portant la couronne d'étanchéité. Une valve comportant ce genre de moyens de rappel est décrite, par exemple, dans la demande de brevet européen EP-A-0 850 851 précitée.According to another aspect of the invention, the elastic return means consist of at least one elastomeric stud carried by an internal wall of the valve chamber and integral with it, this (or these) stud (s) being in elastic support against part of the rod carrying the sealing ring. A valve comprising this kind of return means is described, for example, in the aforementioned European patent application EP-A-0 850 851.

Un autre objet de l'invention est constitué d'un récipient pour la distribution sous pression d'un produit pressurisé au moyen d'un gaz propulseur, ce récipient étant équipé d'une valve telle que définie précédemment.Another object of the invention consists of a container for the distribution under pressure of a pressurized product by means of a propellant gas, this container being equipped with a valve as defined above.

Selon un mode de réalisation préféré de l'invention, cette valve est montée sur le récipient via une coupelle présentant une ouverture dont un bord intérieur est destiné à venir en engagement avec lesdits premier ou second moyens de montage de la valve. Dans ce cas, avantageusement, la coupelle est sertie sur le récipient.According to a preferred embodiment of the invention, this valve is mounted on the container via a cup having an opening whose inner edge is intended to come into engagement with said first or second valve mounting means. In this case, advantageously, the cup is crimped onto the container.

Un autre objet encore de l'invention consiste un procédé de conditionnement sous pression d'un produit dans un récipient présentant une ouverture délimitée par un bord et dans laquelle est montée la valve définie précédemment, ledit procédé consistant à :

  • a) introduire le produit à distribuer dans le récipient ;
  • b) positionner la valve dans une position de remplissage, dans laquelle ledit bord du récipient est en engagement avec des premier moyens de montage du corps de ladite valve, lesdits premier moyens de montage étant aptes, dans ladite position de remplissage, à délimiter avec ledit bord du récipient, un ou plusieurs passages en communication avec le récipient ;
  • c) au travers dudit (ou desdits) passages, introduire du gaz propulseur à l'intérieur du récipient ; et
  • d) déplacer la valve par rapport au récipient de manière à la positionner dans une position de distribution, dans laquelle ledit bord du récipient est en engagement avec les second moyens de montage du corps de valve, les second moyens de montage étant aptes, dans ladite position de distribution, à coopérer avec ledit bord du récipient, de manière à assurer un montage étanche du corps de valve sur le récipient.
Yet another object of the invention consists of a process for packaging under pressure a product in a container having an opening delimited by an edge and in which the valve defined above is mounted, said process consisting in:
  • a) introduce the product to be dispensed into the container;
  • b) positioning the valve in a filling position, in which said edge of the container is in engagement with first means for mounting the body of said valve, said first mounting means being capable, in said filling position, of delimiting with said edge of the container, one or more passages in communication with the container;
  • c) introducing said propellant (s) through said container (s); and
  • d) moving the valve relative to the container so as to position it in a dispensing position, in which said edge of the container is in engagement with the second mounting means of the valve body, the second mounting means being capable, in said dispensing position, to cooperate with said edge of the container, so as to ensure a tight mounting of the valve body on the container.

Généralement, le produit est introduit au travers de l'ouverture du récipient servant au montage de la valve.Generally, the product is introduced through the opening of the container used for mounting the valve.

Lors du montage de la valve sur le récipient, avantageusement, le passage de la valve de la position de remplissage à la position de distribution s'effectue en déplaçant axialement la valve par rapport au récipient. Cette manière de procéder facilite grandement l'automatisation du remplissage du réservoir sur une chaîne de conditionnement.When mounting the valve on the container, advantageously, the passage of the valve from the filling position to the dispensing position is effected by axially moving the valve relative to the container. This procedure greatly facilitates the automation of filling the tank on a packaging line.

Selon un mode de réalisation particulièrement avantageux, dans la position de remplissage de la valve, une pluralité de passages sont disposés de manière régulière tout autour du corps de valve, le remplissage du récipient en gaz s'effectuant en coiffant la valve au moyen d'une canne d'arrivée de gaz, ladite canne présentant un bord, apte à venir en contact étanche tout autour de la valve avec une surface du récipient. Généralement, cette surface du récipient fait partie d'une coupelle porte-valve montée sur le récipient, cette coupelle présentant une ouverture, dont le bord est apte à coopérer avec les premier et second moyens de montage de la valve.According to a particularly advantageous embodiment, in the filling position of the valve, a plurality of passages are arranged in a regular manner all around the valve body, the filling of the container with gas being effected by covering the valve by means of a gas inlet cane, said cane having an edge, capable of coming into tight contact all around the valve with a surface of the container. Generally, this surface of the container is part of a valve-holder cup mounted on the container, this cup having an opening, the edge of which is able to cooperate with the first and second valve mounting means.

La valve qui vient d'être décrite présente d'autres avantages, par rapport à une valve classique. En effet, en réalisant le corps de valve en un matériau élastomérique, on confère au corps de valve à la fois suffisamment d'élasticité pour pouvoir monter directement la tige de manoeuvre dans le corps de valve, sans qu'il soit nécessaire d'assembler plusieurs pièces.The valve which has just been described has other advantages, compared to a conventional valve. In fact, by making the valve body from an elastomeric material, the valve body is given both sufficient elasticity to be able to directly mount the operating rod in the valve body, without the need to assemble several parts.

Par ailleurs, lorsque les moyens de rappel sont réalisés sous forme de plots portés par une des parois délimitant la chambre interne, ces plots peuvent être déformés par écrasement, lors de l'actionnement de la valve. De cette manière, on peut éviter d'avoir recours à un ressort de rappel métallique susceptible de venir au contact du produit à distribuer, risquant le cas échéant, de dégrader le produit.Furthermore, when the return means are produced in the form of studs carried by one of the walls delimiting the internal chamber, these studs can be deformed by crushing, when the valve is actuated. In this way, it is possible to avoid having to resort to a metal return spring capable of coming into contact with the product to be dispensed, risking if necessary, degrading the product.

D'autres aspects de l'invention apparaîtront à la lecture de la description détaillée d'un mode de réalisation de la présente invention, que l'on va décrire maintenant, à titre d'exemple purement illustratif et nullement limitatif, représenté sur les dessins annexés. Sur ces dessins :

  • la figure 1 représente une vue en coupe axiale d'une valve conforme à l'invention, montée sur un récipient en position de remplissage ;
  • la figure 2 représente une vue latérale agrandie du corps de la valve de la figure 1 ;
  • la figure 3 représente une vue agrandie en coupe axiale des moyens d'activation de la valve de la figure 1 ;
  • la figure 4 représente une vue en coupe axiale de la valve de la figure 1, montée sur un récipient en position de montage finale.
Other aspects of the invention will appear on reading the detailed description of an embodiment of the present invention, which will now be described, by way of purely illustrative and in no way limiting example, represented in the drawings attached. In these drawings:
  • Figure 1 shows an axial sectional view of a valve according to the invention, mounted on a container in the filling position;
  • Figure 2 shows an enlarged side view of the valve body of Figure 1;
  • FIG. 3 represents an enlarged view in axial section of the activation means of the valve of FIG. 1;
  • 4 shows an axial sectional view of the valve of Figure 1, mounted on a container in the final mounting position.

La valve 1 conforme à l'invention, représentée sur les figures 1 et 4, respectivement en position de remplissage et en position de montage étanche, est destinée à équiper un distributeur pourvu d'un réservoir 3. Le réservoir est destiné à contenir un produit liquide, tel qu'une laque capillaire, le réservoir étant mis sous pression par action d'un gaz propulseur G.The valve 1 according to the invention, represented in FIGS. 1 and 4, respectively in the filling position and in the sealed mounting position, is intended to equip a dispenser provided with a reservoir 3. The reservoir is intended to contain a product liquid, such as a hair spray, the reservoir being pressurized by the action of a propellant gas G.

Comme visible, notamment sur la figure 1, la valve 1 comporte un corps 2 ayant une portion centrale 2a en tronc de cône d'axe de révolution A, et une tige de manoeuvre 11, de forme généralement cylindrique, pourvue d'un axe X. En position de repos de la valve, les axes A et X sont confondus. La tige 11 est réalisée en deux parties 22 et 30 (voir figure 3) en un matériau thermoplastique rigide, tel que du polyoxy méthylène (POM).As can be seen, in particular in FIG. 1, the valve 1 comprises a body 2 having a central portion 2a in a truncated cone with an axis of revolution A, and an operating rod 11, of generally cylindrical shape, provided with an X axis In the valve rest position, the axes A and X are merged. The rod 11 is made in two parts 22 and 30 (see FIG. 3) in a rigid thermoplastic material, such as polyoxy methylene (POM).

Le corps de valve 2 est réalisé en un matériau élastiquement déformable, par exemple en un élastomère de caoutchouc de nitrile, dont la dureté Shore A est comprise, avantageusement, dans la gamme comprise entre 30 et 70. Le corps comporte une grande base 2b et une petite base 2c, reliées par la portion globalement tronconique 2a et une portion cylindrique 2d.The valve body 2 is made of an elastically deformable material, for example an elastomer of nitrile rubber, whose Shore A hardness is advantageously in the range between 30 and 70. The body has a large base 2b and a small base 2c, connected by the generally frustoconical portion 2a and a cylindrical portion 2d.

A l'intérieur du corps de valve 2 est ménagée une chambre interne 4 de section circulaire, délimitée par des parois périphériques 4a, 4b, 4c, 4d. La paroi 4a est de forme cylindrique et est raccordée à une portion tronconique 4b dont le fond s'ouvre vers le réservoir 3 par un canal axial d'admission 5 de produit P.Inside the valve body 2 is formed an internal chamber 4 of circular section, delimited by peripheral walls 4a, 4b, 4c, 4d. The wall 4a is cylindrical in shape and is connected to a frustoconical portion 4b, the bottom of which opens towards the reservoir 3 by an axial inlet channel 5 of product P.

Le corps de valve 2, sensiblement au tiers de sa hauteur (en partant depuis l'extrémité inférieure de corps de valve), comporte une gorge annulaire 16 délimitée en partie par un bourrelet annulaire 16a. La position de la gorge 16 sur le corps de valve est répertoriée par la référence H1. La gorge annulaire 16 est interrompue par plusieurs zones en dépression 18, régulièrement réparties et généralement au nombre de 2 à 4. Ces zones 18 forment des passages ouverts, lorsque le corps de valve est monté dans l'ouverture 7 de la coupelle 8, à la position H1, c'est-à-dire dans une position où le bord de l'ouverture 7 coopère avec la gorge annulaire 16. En d'autres termes, dans cette position, les passages 18 débouchent de part et d'autre de la coupelle 8. Dans cette position, le réservoir peut être rempli en gaz propulseur G depuis l'extérieur, via les passages 18. Il est à noter que la profondeur de chaque passage 18 est supérieure à la profondeur de la gorge 16. La gorge annulaire 16 constitue les premier moyens de montage de la valve.The valve body 2, substantially at a third of its height (starting from the lower end of the valve body), comprises an annular groove 16 delimited in part by an annular bead 16a. The position of the groove 16 on the valve body is listed by the reference H 1. The annular groove 16 is interrupted by several zones in depression 18, regularly distributed and generally 2 to 4 in number. These zones 18 form open passages , when the valve body is mounted in the opening 7 of the cup 8, in the position H 1 , that is to say in a position where the edge of the opening 7 cooperates with the annular groove 16. In in other words, in this position, the passages 18 open on either side of the cup 8. In this position, the reservoir can be filled with propellant G from the outside, via the passages 18. It is at note that the depth of each passage 18 is greater than the depth of the groove 16. The annular groove 16 constitutes the first means of mounting the valve.

Le corps de valve comporte, entre la partie cylindrique 2d et la partie tronconique 2a du corps 2, à une hauteur H2, des second moyens de montage, réalisés sous forme d'une gorge annulaire 14. Lorsque la valve est montée dans l'orifice 7 de la coupelle 8 en engagement avec la gorge 14, une étanchéité parfaite est établie entre la coupelle et le corps de valve.The valve body comprises, between the cylindrical part 2d and the frustoconical part 2a of the body 2, at a height H 2 , second mounting means, produced in the form of an annular groove 14. When the valve is mounted in the orifice 7 of the cup 8 in engagement with the groove 14, a perfect seal is established between the cup and the valve body.

Le canal axial d'admission 5, destiné à l'admission du produit à distribuer, est pratiqué au centre de la petite base 2b et débouche dans la chambre 4. Ce canal d'admission 5 est relié à un tube plongeur 19 dont l'extrémité libre (non représentée) plonge en permanence dans le produit, via une tubulure de raccordement 32 portée par la seconde partie de la tige de commande 11.The axial intake channel 5, intended for the admission of the product to be dispensed, is formed in the center of the small base 2b and opens into the chamber 4. This intake channel 5 is connected to a dip tube 19, the free end (not shown) plunges permanently into the product, via a connection tube 32 carried by the second part of the control rod 11.

Du côté opposé au canal d'admission 5, la paroi interne cylindrique 4a du corps de valve est raccordée à une zone annulaire d'étanchéité 4c située dans un plan perpendiculaire à l'axe A. La zone annulaire 4c se prolonge vers le haut par une seconde portion tronconique 4d, facilitant le basculement de la tige de valve 11. Le sommet de la portion tronconique 4d débouche dans un renfoncement 13 de forme sensiblement sphérique. Ce renfoncement 13 fait partie d'un canal de sortie 10, disposé dans le prolongement du canal d'admission 5, le canal 10 quant à lui, reliant la chambre interne 4, vers l'extérieur. Le canal de sortie 10 est traversé par la première partie 22 de la tige 11, la paroi externe de la tige de valve 11 étant en contact d'étanchéité parfaite contre la paroi du corps de valve délimitant le canal de sortie 10. La tige 11 présente une portion annulaire 15 formant saillie par rapport au reste de la tige, et dont la section transversale, axiale est de forme sphérique, de forme complémentaire à la forme du renfoncement 13 et présentant un centre géométrique Q. Comme il sera indiqué plus loin, lors de la description du fonctionnement de la valve, le centre géométrique Q constitue un point de basculement de la tige lors de l'actionnement de la valve.On the side opposite to the intake channel 5, the cylindrical internal wall 4a of the valve body is connected to an annular sealing zone 4c situated in a plane perpendicular to the axis A. The annular zone 4c is extended upwards by a second frustoconical portion 4d, facilitating the tilting of the valve stem 11. The top of the frustoconical portion 4d opens into a recess 13 of substantially spherical shape. This recess 13 is part of an outlet channel 10, arranged in the extension of the intake channel 5, the channel 10 meanwhile, connecting the internal chamber 4, to the outside. The outlet channel 10 is crossed by the first part 22 of the rod 11, the external wall of the valve stem 11 being in perfect sealing contact against the wall of the valve body delimiting the outlet channel 10. The stem 11 has an annular portion 15 projecting from the rest of the rod, and whose axial cross section is spherical in shape, complementary to the shape of the recess 13 and having a geometric center Q. As will be indicated below, during the description of the operation of the valve, the geometric center Q constitutes a tilting point of the rod when the valve is actuated.

Comme visible sur la figure 3, la première partie 22 de la tige de valve 11 comporte un canal central de distribution 23 traversant la tige depuis l'extrémité émergente 11a jusqu'à une hauteur située sensiblement à la hauteur de la zone annulaire 4c. A cette hauteur, le canal central 23 débouche dans un passage 25 traversant la tige radialement et aboutissant dans la partie supérieure de la chambre 4. La première partie 22 de la tige comporte, en outre une extrémité cylindrique 24, pourvue d'un bourrelet périphérique 26. Ce bourrelet 26 est apte a coopérer avec une gorge annulaire complémentaire 33 pratiquée à l'intérieur d'une cheminée borgne 34, pourvue sur l'extrémité supérieure de la seconde partie 30 de la tige de valve. Ainsi, les deux parties 22 et 30 de la tige de valve peuvent être assemblées par encliquetage.As visible in FIG. 3, the first part 22 of the valve stem 11 has a central distribution channel 23 passing through the stem from the emerging end 11a to a height situated substantially at the height of the annular zone 4c. At this height, the central channel 23 opens into a passage 25 passing through the rod radially and ending in the upper part of the chamber 4. The first part 22 of the rod comprises, in addition a cylindrical end 24, provided with a peripheral bead 26. This bead 26 is able to cooperate with a complementary annular groove 33 formed inside a blind chimney 34, provided on the upper end of the second part 30 of the valve stem. Thus, the two parts 22 and 30 of the valve stem can be assembled by snap-fastening.

La cheminée borgne 34 est entourée d'une couronne cylindrique 9, de plus grand diamètre que le cheminée 34 et de hauteur plus importante. Le bord libre 9a de la couronne comporte un chanfrein, formant ainsi une arrête plus ou moins vive, destinée à s'appuyer sur la zone annulaire 4c de la chambre 4, formant ainsi un siège. Du côté opposé à la couronne 9, la seconde partie comporte une portion en tronc de cône 30a reliée à la couronne 9 par une portion cylindrique 30b et dont la section décroît vers son extrémité inférieure 30d. La surface tronconique 30a de la tige de valve comporte une pluralité de rainures 30c, orientées dans un plan passant par l'axe X. L'extrémité inférieure 30d de la portion tronconique 30a se prolonge par la tubulure de raccordement 32 mentionnée ci-avant.The blind chimney 34 is surrounded by a cylindrical crown 9, of larger diameter than the chimney 34 and of greater height. The free edge 9a of the crown has a chamfer, thus forming a more or less sharp edge, intended to bear on the annular zone 4c of the chamber 4, thus forming a seat. On the side opposite to the crown 9, the second part comprises a portion in a truncated cone 30a connected to the crown 9 by a cylindrical portion 30b and whose section decreases towards its lower end 30d. The frustoconical surface 30a of the valve stem has a plurality of grooves 30c, oriented in a plane passing through the axis X. The lower end 30d of the frustoconical portion 30a is extended by the connection tube 32 mentioned above.

Dans la zone de jonction entre la portion tronconique 30a et la tubulure de raccordement 32 est pratiqué un passage 36 conduisant radialement dans les rainures 30c. Le centre du passage radial 36 débouche dans un canal d'aspiration 38, défini à l'intérieur de la tubulure 32, en communication avec le tube plongeur 19.In the junction zone between the frustoconical portion 30a and the connection tube 32 is made a passage 36 leading radially in the grooves 30c. The center of the radial passage 36 opens into a suction channel 38, defined inside the tube 32, in communication with the dip tube 19.

L'appui élastique de la couronne 9 contre le siège 4c est assuré par plusieurs plots ou renflements 20 de petite dimension, repartis régulièrement sur la paroi tronconique interne 4b de la chambre de valve 4 et en appui élastique contre la partie tronconique 30a de la tige de valve 11. Ainsi, en position de repos de la valve, le bord libre 9a de la couronne 9 rentre de quelques 10èmes de mm dans le siège 4c et crée une étanchéité parfaite entre la chambre de valve et le canal de distribution. Par ailleurs, la partie émergente de la tige de valve comporte une collerette 29, servant d'appui pour un outillage, lors du montage de la tige dans le corps de valve.The elastic support of the crown 9 against the seat 4c is provided by several studs or bulges 20 of small dimension, distributed regularly on the internal frustoconical wall 4b of the valve chamber 4 and in elastic support against the frustoconical part 30a of the rod valve 11. Thus, in the valve rest position, the free edge 9a of the crown 9 enters by some 10 th of mm in the seat 4c and creates a perfect seal between the valve chamber and the distribution channel. Furthermore, the emerging part of the valve stem has a flange 29, serving as a support for a tool, during mounting of the stem in the valve body.

Le montage de la valve 1 est simple à effectuer. Après assemblage des deux parties de tige 22 et 30, la tige de valve est introduite axialement dans le corps de valve par le canal de sortie 10, en ce, en deux étapes successives, comme on pourra le voir par la suite. L'introduction de la tige dans le corps de valve est favorisée, d'une part par la portion tronconique 30c de la tige de valve 11, et d'autre part par l'élasticité du matériau élastomérique constituant le corps de valve 2. Lors du montage, la course axiale de la tige de valve 11 est limitée par la collerette 29, et la tige se positionne correctement dans la chambre de valve 4. On notera que contrairement à certaines valves conventionnelles, aucune bille ou aucun ressort n'est nécessaire pour assurer le fonctionnement de cette valve.The mounting of the valve 1 is simple to carry out. After assembly of the two stem parts 22 and 30, the valve stem is introduced axially into the valve body through the outlet channel 10, in this way, in two successive stages, as will be seen later. The introduction of the rod into the valve body is favored, on the one hand by the frustoconical portion 30c of the valve rod 11, and on the other hand by the elasticity of the elastomeric material constituting the valve body 2. During mounting, the axial stroke of the valve stem 11 is limited by the flange 29, and the stem is positioned correctly in the valve chamber 4. Note that unlike some conventional valves, no ball or spring is necessary to operate this valve.

Pour conditionner un produit aérosol, conforme à l'invention, on introduit dans le réservoir 3, sur lequel a été préalablement fixée, par exemple par sertissage, la coupelle 8, une quantité appropriée de produit P. Dans l'ouverture 7 de la coupelle 8, on positionne la valve dans la position de remplissage H1. Dans cette position, le bord 7 de la coupelle est en engagement avec la gorge 16. On place alors une canne de d'arrivée C de gaz propulseur, prévue pour l'acheminement d'un gaz propulseur G dans le récipient, sur la coupelle, dans une zone 40 entourant la valve. L'extrémité libre 38 de la canne de remplissage C est apte à se placer, de manière étanche, sur la coupelle 8. Avantageusement, et ceci pour minimiser les pertes en gaz propulseur, on choisit le diamètre interne de la canne se remplissage C légèrement supérieur au plus grand diamètre du corps de valve. On introduit alors une quantité appropriée en gaz propulseur G à l'intérieur du récipient, via les passages 18.To condition an aerosol product, according to the invention, the cup 8 is introduced into the reservoir 3, onto which has been previously fixed, for example by crimping, an appropriate quantity of product P. In the opening 7 of the cup 8, the valve is positioned in the filling position H 1 . In this position, the edge 7 of the cup is in engagement with the groove 16. One then places an inlet cane C of propellant gas, provided for the delivery of a propellant gas G in the container, on the cup , in a zone 40 surrounding the valve. The free end 38 of the filling rod C is able to be placed, in a sealed manner, on the cup 8. Advantageously, and this to minimize losses in propellant gas, it is chooses the internal diameter of the filling cane C slightly greater than the largest diameter of the valve body. An appropriate quantity of propellant G is then introduced into the interior of the container, via the passages 18.

Toujours en présence de gaz propulseur G dans la canne de remplissage C, on provoque le déplacement axial du corps de valve 2 en direction du récipient 3. A cet effet, on peut prévoir un élément de montage (non représenté), mobile axialement à l'intérieur de la canne de remplissage et apte à se placer sur la face supérieure 2b du corps de valve et pousser ce dernier en direction du récipient. Avantageusement, cet élément de montage est tubulaire, de manière à pouvoir recevoir en son centre creux la partie émergente 11a de la tige de valve. Après désengagement du bord 7 de la coupelle 8 de la gorge 16, il est possible de faire coulisser ledit bord le long de la partie tronconique 2a du corps de valve, grâce au matériau élastomérique constituant le corps de valve. A la fin de la translation ainsi effectuée, le bord de coupelle 7 finit par se loger dans la gorge 14. A ce moment, la valve est fixée sur le récipient de manière stable et étanche, et le flux de gaz propulseur peut être débranché.Still in the presence of propellant G in the filling rod C, the axial displacement of the valve body 2 is caused in the direction of the container 3. For this purpose, a mounting element (not shown) can be provided, axially movable at the inside the filling rod and able to be placed on the upper face 2b of the valve body and push the latter towards the container. Advantageously, this mounting element is tubular, so as to be able to receive at its hollow center the emerging part 11a of the valve stem. After disengagement of the edge 7 of the cup 8 from the groove 16, it is possible to slide said edge along the frustoconical part 2a of the valve body, thanks to the elastomeric material constituting the valve body. At the end of the translation thus carried out, the edge of the cup 7 ends up being housed in the groove 14. At this time, the valve is fixed to the container in a stable and sealed manner, and the flow of propellant gas can be disconnected.

Les avantages du procédé d'assemblage et de conditionnement d'un récipient sous pression, conforme à l'invention sont les suivants :

  • on obtient une cadence de pressurisation élevée sur une chaîne de conditionnement, non réalisable avec une valve conventionnelle ;
  • les frais de montage de la valve sur le récipient sont réduits, car on peut se passer du sertissage de la valve sur la coupelle
  • les frais de montage de la valve en elle même sont avantageux comparativement à une valve classique comportant une bille et un ressort de rappel métallique et nécessitant un joint de montage supplémentaire ;
  • le nombre de pièces constitutives de la valve est réduit par rapport à une valve conventionnelle.
The advantages of the process for assembling and packaging a pressure container, in accordance with the invention are the following:
  • a high pressurization rate is obtained on a packaging line, not achievable with a conventional valve;
  • the costs of mounting the valve on the container are reduced, because we can do without crimping the valve on the cup
  • the assembly costs of the valve itself are advantageous compared to a conventional valve comprising a ball and a metal return spring and requiring an additional mounting gasket;
  • the number of component parts of the valve is reduced compared to a conventional valve.

Le fonctionnement de la valve 1 est expliqué, ci-après, en référence à la figure 4. Pour effectuer l'actionnement de la valve 1, on provoque une inclinaison de la tige 11 par rapport à l'axe A. Cette inclinaison peut être effectuée dans n'importe quel direction radiale par rapport à l'axe A, comme symbolisé sur la figure 4 par les flèches B. Lors de ce pivotement, l'axe X de la tige est incliné par rapport à l'axe A du corps de valve, l'angle a formé entre les deux axes étant typiquement de l'ordre de 2° à 15°. Lors de ce pivotement, une partie de la couronne 9 s'écarte du siège 4c. En même temps, le (ou les) plot(s) 20 qui se trouve(nt) sur la paroi tronconique 4b, du côté opposé à la zone d'écartement de la couronne, est (sont) écrasé(s) par la partie tronconique 30a de la tige. Dans l'exemple de réalisation considéré, quatre plots 20 de forme allongée ont été réalisés, de hauteur d'environ 1 mm, de largeur d'environ 1,5 mm et de longueur d'environ 1,5 mm. Sous la poussée du gaz propulseur G, le produit P est alors acheminé dans la chambre 4 via le tube plongeur 19, le canal d'aspiration 38, le passage radial 36, les rainures 30c. Ensuite, le produit P est acheminé par la zone écartée de la couronne 9 dans le passage 25 pour arriver dans le canal de distribution 23. Lorsque cesse le pivotement de la tige, la distribution du produit s'arrête, car la couronne 9 revient en contact étanche contre le siège 4c. Lors du pivotement de la tige de valve dans le canal de sortie 10, la portion sphérique 15 de la tige assure un contact annulaire parfaitement étanche avec le corps de valve, au niveau de tout ou partie de la portion sphérique du renfoncement 13.The operation of the valve 1 is explained below, with reference to FIG. 4. In order to actuate the valve 1, the rod 11 is inclined relative to the axis A. This inclination can be performed in any radial direction relative to the axis A, as symbolized in Figure 4 by the arrows B. During this pivoting, the axis X of the rod is inclined relative to the axis A of the body valve, the angle formed between the two axes being typically of the order of 2 ° to 15 °. During this pivoting, part of the crown 9 moves away from the seat 4c. At the same time, the stud (s) 20 which is (are) on the frusto-conical wall 4b, on the side opposite to the zone of separation of the crown, is (are) crushed by the part frustoconical 30a of the stem. In the embodiment considered, four pads 20 of elongated shape were made, about 1 mm high, about 1.5 mm wide and about 1.5 mm long. Under the thrust of the propellant G, the product P is then conveyed into the chamber 4 via the dip tube 19, the suction channel 38, the radial passage 36, the grooves 30c. Then, the product P is conveyed by the area spaced from the crown 9 in the passage 25 to arrive in the distribution channel 23. When the pivoting of the rod ceases, the distribution of the product stops, because the crown 9 returns waterproof contact against seat 4c. When the valve stem pivots in the outlet channel 10, the spherical portion 15 of the stem ensures perfectly sealed annular contact with the valve body, at the level of all or part of the spherical portion of the recess 13.

De façon classique, l'extrémité émergente de la tige de valve 11 est engagée dans un organe d'actionnement assurant également la distribution du produit.
Ainsi on peut monter sur la tige de valve 11 un bouton-poussoir muni d'un orifice de distribution ou d'une tête de distribution (non représentés), utilisés habituellement pour ce type de distributeurs.Conventionally, the emerging end of the valve stem 11 is engaged in an actuating member also ensuring the distribution of the product.
Thus one can mount on the valve stem 11 a push button provided with a dispensing orifice or a dispensing head (not shown), usually used for this type of dispensers.

Claims (23)

  1. Valve (1) intended to be fitted to a container (3) containing a product which is pressurized by means of a propellent gas (G), comprising a valve body (2) made of an elastomeric material, and activation means for, in response to an actuation command, causing the valve to move from a closed position into a position which allows the product to be dispensed via an outlet passage (23) of the said valve body, the said valve being, in the absence of any actuation command, forced into the closed position, characterized in that the valve body comprises first mounting means (16), to allow the valve to be mounted in a first position (H1) in which the valve body defines, with an edge (7) of the container, at least one passage (18) allowing communication between the inside and the outside of the container (3), so as to allow the container to be filled with a propellent gas, and second mounting means (14), to allow the valve to be mounted in a second position (H2) in which the valve body (2) is mounted in a sealed fashion on the said edge (7) of the container.
  2. Valve according to Claim 1, characterized in that the first (16) and second (14) mounting means are arranged in such a way that, in the first position, the valve is positioned at a first axial height (H1) relative to the container, the said valve, in the said second position, being arranged at a second axial height (H2) relative to the container.
  3. Valve according to Claim 1 or 2, characterized in that the valve body (2) has a profile which, once the container has been filled with propellent gas, is suitable for facilitating the movement of the valve from the first position into the second.
  4. Valve according to any one of Claims 1 to 3, characterized in that the first and second mounting means are arranged on the valve body at different axial heights (H1, H2), the first mounting means (16) being arranged between the second mounting means (14) and one end (2c) of the valve body capable of being mounted in the container, the said valve body having, between the said first and second means, a cross section which diminishes in the direction towards the first means.
  5. Valve according to any one of Claims 1 to 4, characterized in that the second mounting means (14) are formed of an annular groove formed on the outer surface (2a) of the valve body and capable of collaborating in a sealed manner with a corresponding edge (7) of the container (3).
  6. Valve according to any one of Claims 1 to 5, characterized in that the first mounting means are formed of an annular groove (16) formed on the outer surface of the valve body and capable of collaborating with a corresponding edge (7) of the container (3), the said groove (16) being interrupted by at least one passage (18) formed on the outside of the valve body and opening to the inside of the container, the depth of the passage exceeding the depth of the said groove.
  7. Valve according to any one of Claims 1 to 6, characterized in that the said first (16) and second (14) mounting means are capable of collaborating with the said edge (7) of the container by snap-fastening.
  8. Valve according to any one of Claims 1 to 7, characterized in that the said elastomeric material consists of a thermoplastic elastomer.
  9. Valve according to one of the preceding claims, characterized in that the said elastomeric material has a Shore A hardness lying in the range from 30 to 70.
  10. Valve according to one of the preceding claims, characterized in that it operates by the sideways tilting of a stem (11) through which the said outlet passage (23) passes, the said stem forming the said activation means (12) and being mounted in a duct (10) formed in the valve body.
  11. Valve according to the preceding claim, characterized in that the duct (10) has an axis (A), and the valve stem (11) has, inside the duct (10), a profile (13) capable of collaborating with a complementary profile (15) of the duct (10) to define an articulation roughly about a point (Q) so that, irrespective of the angular position of the stem relative to the axis (A), the said stem (11) is in sealed annular contact with the duct (10).
  12. Dispensing valve according to one of the preceding claims, characterized in that the stem (11) has, inside the duct (10), an annular portion (15) which projects relative to the rest of the stem, and is spherical in shape, having a geometric centre (Q), the duct (10) having a portion, forming a depression (13) of a shape which complements that of the projecting portion (15) and capable of accommodating the said projecting portion in a sealed manner, the point of articulation of the stem roughly coinciding with the geometric centre (Q).
  13. Valve according to one of the preceding claims, characterized in that the activation means, for selectively causing the valve to move from a closed position to a position that allows the product to be dispensed through the outlet passage (23), comprise a sealing ring (9), urged by elastic return means (20) to bear in a sealed fashion on an annular seat (4c) formed by the said body (2).
  14. Valve according to the preceding claim, characterized in that the outlet passage (23) opens into an internal valve chamber (4) via a passage (25) passing radially through the stem.
  15. valve according to either one of Claims 13 or 14, characterized in that the stem (11) and the ring (9) are made of a rigid thermoplastic.
  16. Valve according to one of Claims 13 to 15, characterized in that the elastic return means (20) consist of at least one elastomeric pad borne by a wall (4b) of the chamber (4) and secured thereto, this (or these) pad(s) bearing elastically against a part (32) bearing the ring (9).
  17. Container for dispensing, under pressure, a product which is pressurized by means of a propellent gas, characterized in that it is fitted with a valve according to any one of the preceding claims.
  18. Container according to Claim 17, characterized in that the valve (1) is mounted on the container (3) via a dished part (8), an interior edge (7) of which is intended to engage with the said first (16) or second (14) valve-mounting means.
  19. Container according to Claim 18, characterized in that the said dished part (8) is crimped onto the container (3).
  20. Method for packing a product under pressure in a container (3) which has an opening delimited by an edge (7), and in which opening a valve (1) can be mounted, the said method consisting in:
    a) introducing the product into the container (3);
    b) positioning the valve (1) in a filling position (H1), in which the said edge of the container is engaged with first mounting means. (16) of a body (2) of the said valve, the said first mounting means being capable, in the said filling position, of delimiting with the said edge of the container at least one passage (18) which is in communication with the container (3);
    c) introducing propellent gas (G) into the container (3) through the said passage (or passages) (18); and
    d) moving the valve (1) relative to the container (3) so as to position it in a dispensing position (H2) in which the said edge (7) of the container is engaged with second mounting means (14) of the said valve body, the said second mounting means being capable, in the said dispensing position, of collaborating with the said edge of the container so as to allow the valve body to be mounted in a sealed manner on the said container.
  21. Method according to Claim 20, characterized in that the product is introduced through the said opening.
  22. Method according to Claim 20 or 21, characterized in that the switchover from the filling position (H1) to the dispensing position (H2) is brought about by moving the valve axially relative to the container.
  23. Method according to any one of Claims 20 to 22, characterized in that when the valve is in the filling position (H1), a number of passages (18) are arranged uniformly right around the valve body (2), the container (3) being filled with gas by placing a gas inlet pipe (C) over the valve, the said pipe having an edge (38) capable of coming into sealed contact right around the valve (1) with a surface (40) of the container.
EP99402579A 1998-11-23 1999-10-19 Dispensing valve for pressurised fluid Expired - Lifetime EP1004523B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9814724 1998-11-23
FR9814724A FR2786167B1 (en) 1998-11-23 1998-11-23 VALVE FOR THE DISTRIBUTION OF A PRESSURIZED LIQUID, CONTAINER EQUIPPED WITH THIS VALVE AND METHOD FOR PACKAGING A CONTAINER THUS EQUIPPED

Publications (2)

Publication Number Publication Date
EP1004523A1 EP1004523A1 (en) 2000-05-31
EP1004523B1 true EP1004523B1 (en) 2003-09-10

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Application Number Title Priority Date Filing Date
EP99402579A Expired - Lifetime EP1004523B1 (en) 1998-11-23 1999-10-19 Dispensing valve for pressurised fluid

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Country Link
US (1) US6170537B1 (en)
EP (1) EP1004523B1 (en)
JP (1) JP3242093B2 (en)
AT (1) ATE249379T1 (en)
BR (1) BR9905510A (en)
CA (1) CA2288243A1 (en)
DE (1) DE69911147T2 (en)
ES (1) ES2207148T3 (en)
FR (1) FR2786167B1 (en)

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US4730752A (en) * 1986-05-19 1988-03-15 S. C. Johnson & Son Inc. Anti-seating valve cup
FR2757488B1 (en) 1996-12-24 1999-01-22 Oreal VALVE FOR A CONDITIONING AND DISPENSING DEVICE OF A PRESSURIZED LIQUID, AND DEVICE THUS EQUIPPED

Also Published As

Publication number Publication date
ATE249379T1 (en) 2003-09-15
US6170537B1 (en) 2001-01-09
EP1004523A1 (en) 2000-05-31
JP3242093B2 (en) 2001-12-25
JP2000186781A (en) 2000-07-04
BR9905510A (en) 2000-08-29
ES2207148T3 (en) 2004-05-16
FR2786167A1 (en) 2000-05-26
DE69911147T2 (en) 2004-07-08
FR2786167B1 (en) 2001-01-05
DE69911147D1 (en) 2003-10-16
CA2288243A1 (en) 2000-05-23

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