EP0642839B1 - Process and device for storing and dispensing a fluid product held in a container pressurized with a propellant gas - Google Patents

Process and device for storing and dispensing a fluid product held in a container pressurized with a propellant gas Download PDF

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Publication number
EP0642839B1
EP0642839B1 EP19940401909 EP94401909A EP0642839B1 EP 0642839 B1 EP0642839 B1 EP 0642839B1 EP 19940401909 EP19940401909 EP 19940401909 EP 94401909 A EP94401909 A EP 94401909A EP 0642839 B1 EP0642839 B1 EP 0642839B1
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EP
European Patent Office
Prior art keywords
propellant gas
dispensing
compartment
valve
characterized
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
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EP19940401909
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German (de)
French (fr)
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EP0642839A1 (en
Inventor
Vincent De Laforcade
Pierre Lasserre
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LOreal SA
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LOreal SA
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Priority to FR9310774 priority Critical
Priority to FR9310774A priority patent/FR2709738B1/en
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Publication of EP0642839A1 publication Critical patent/EP0642839A1/en
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Publication of EP0642839B1 publication Critical patent/EP0642839B1/en
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Application status is Expired - Lifetime legal-status Critical

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers 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
    • B65D83/60Contents and propellant separated
    • B65D83/62Contents and propellant separated by membrane, bag, or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0838Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/14Containers 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
    • B65D83/60Contents and propellant separated
    • B65D83/64Contents and propellant separated by piston

Description

  • La présente invention concerne un procédé de distribution et de conditionnement d'un produit fluide contenu dans un récipient pressurisé à l'aide d'un gaz propulseur, plus particulièrement avantageux lorsque le gaz propulseur n'est pas compatible avec le produit fluide à distribuer, ainsi qu'un dispositif pour la mise en oeuvre dudit procédé. The present invention concerns a method for dispensing and packaging a fluid product contained in a container pressurized with a propellant gas, particularly advantageous when the propellant is not compatible with the fluid to be dispensed, and a device for carrying out said method.
  • Selon la présente invention, on entend par produit fluide, un produit sous forme de liquide ou sous forme de pâte ou de crème plus ou moins visqueuse. According to the present invention, fluid is meant a product in liquid or paste form or cream more or less viscous.
  • Il est connu d'utiliser, pour le conditionnement et la distribution d'un produit fluide contenu dans un récipient pressurisé par un gaz non compatible avec le produit fluide, un récipient comportant deux compartiments séparés par une cloison mobile, un premier compartiment, contenant le produit fluide et étant en communication avec une valve de distribution du produit, et un second compartiment contenant le gaz comprimé. It is known to use, for the packaging and dispensing of a fluid product contained in a container pressurized by a gas non-compatible with the fluid product, a container having two compartments separated by a moving partition, a first compartment containing the fluid and being in communication with a product dispensing valve, and a second compartment containing the compressed gas. Lors de la distribution, la cloison mobile se déplace et/ou se déforme. When dispensing, the movable wall moves and / or deforms. La cloison mobile peut être constituée par une membrane déformable ; The movable wall may be constituted by a deformable membrane; elle est, de préférence, constituée par un piston. it is preferably constituted by a piston. Ce type de dispositif est prévu pour isoler le produit fluide à distribuer du gaz propulseur et ainsi retarder la dégradation du produit fluide par le gaz propulseur. This type of device is provided to isolate the fluid to be dispensed from the propellant gas and thus delay the degradation of the fluid produced by the propellant.
  • Un procédé selon le préambule de la revendication 1 et un dispositif selon le préambule de la revendication 4 sont connus par DE-A-3 934 237. Ce document propose de distribuer à l'aide d'un gaz propulseur un produit contenu dans un récipient comportant deux compartiments séparés par une cloison mobile, l'un des compartiments contenant le produit et communiquant avec une vanne de distribution du produit et l'autre compartiment comprenant une vanne d'introduction du gaz propulseur et un dispositif de dépressurisation du gaz propulseur. A method according to the preamble of claim 1 and a device according to the preamble of claim 4 are known from DE-A-3 934 237. This document proposes to distribute by means of a propellant a product contained in a container comprising two compartments separated by a moving partition, one compartment containing the product and communicates with a product dispensing valve and the other compartment comprising an inlet valve of the propellant and a depressurizing device of the propellant. Selon le brevet DE-A-3 934 237, on distribue le produit et lorsque le produit est épuisé, avant de remplir le compartiment contenant le produit on dépressurise le compartiment à gaz de façon à éviter toute distribution non désirée de produit. According to DE-A-3934237, it distributes the product and when the product is exhausted, before filling the compartment containing the product is depressurized gas compartment so as to avoid unwanted dispensing of product.
  • Dans les dispositifs de ce type, la paroi mobile, plus particulièrement lorsqu'elle est constituée par un piston, n'est pas toujours absolument étanche soit que les joints entre la paroi mobile et le récipient ne soient pas étanches, soit que la paroi mobile présente une certaine perméabilité au gaz propulseur. In devices of this type, the movable wall, especially when it consists of a piston, is not always absolutely tight is that the joints between the movable wall and the container are not sealed or that the movable wall has a certain permeability to the propellant gas. L'étanchéité est d'autant plus faible que le produit fluide est moins visqueux et que la pression du gaz comprimé dans le second compartiment est plus élevée. Sealing is even lower than the fluid is less viscous and the pressure of the compressed gas in the second compartment is higher. Par conséquent, au cours du stockage, le gaz comprimé peut fuir progressivement dans le premier compartiment contenant le produit fluide et celui-ci peut être dégradé après un certain temps de stockage. Therefore, during storage, the compressed gas can gradually leak into the first compartment containing the fluid product and this can be degraded after a certain storage time. Ce problème se pose, par exemple, dans le cas où le gaz comprimé est de l'air et où le produit fluide est une teinture capillaire. This problem arises, e.g., in the case where the compressed gas is air and wherein the fluid is a hair dye.
  • Selon la présente invention, on a trouvé que l'on peut éviter la dégradation d'un produit fluide, même faiblement visqueux, par un gaz propulseur non compatible, dans un récipient séparé en deux compartiments par une cloison mobile, bien que le joint entre la paroi du récipient et la cloison mobile ne soit pas rigoureusement étanche et/ou que la cloison mobile ait une certaine perméabilité, en maintenant dans le second compartiment le gaz propulseur à pression atmosphérique pendant le stockage et en n'augmentant la pression dans ledit second compartiment que pour permettre ladite distribution, le récipient n'étant pressurisé que pendant un temps très court voisin du temps de distribution. According to the present invention, it was found that one can avoid the degradation of a fluid, low viscosity even by a non-compatible propellant gas, in a separate container into two compartments by a movable partition, although the joint between the container wall and the movable wall does not strictly sealed and / or that the moving partition has a certain permeability by maintaining in the second compartment the propellant at atmospheric pressure during storage and not increasing the pressure in said second compartment as to allow said distribution, the container being pressurized only during a very short time neighbor dispensing time.
  • La présente invention a donc pour objet un procédé de conditionnement et de distribution d'un produit fluide contenu dans un récipient pressurisé à l'aide d'un gaz propulseur, le récipient comportant deux compartiments séparés par une cloison mobile, un premier compartiment contenant le produit fluide et étant en communication avec une valve de distribution du produit et le second compartiment contenant le gaz propulseur et muni d'un dispostif d'introduction du gaz propulseur sous pression et d'un dispositif de dépressurisation du gaz propulseur caractérisé par le fait qu'on amène, avant chaque distribution, dans le second compartiment le gaz propulseur à une pression P1 permettant la distribution du produit fluide par action sur la valve de distribution, qu'on effectue la distribution, tout en abaissant la pression dans le second compartiment jusqu'à la pression atmosphérique grâce à une fuite de gaz propulseur ménagée entre le second compartiment et l'atmosphère The present invention thus relates to a packaging process and for dispensing a fluid product contained in a container pressurized with a propellant gas, the container having two compartments separated by a moving partition, a first compartment containing the fluid and being in communication with a product dispensing valve and the second compartment containing the propellant gas and with a propellant gas introduction dispostif pressure and a depressurizing device the propellant gas characterized in that 'is brought, prior to each dispensing, in the second compartment the propellant gas at a pressure P1 allowing the dispensing of the fluid by action on the dispensing valve, one carries out the distribution, while lowering the pressure in the second compartment until 'at atmospheric pressure through a leakage of propellant gas formed between the second compartment and the atmosphere pendant a distribution du produit, et après le stade de distribution du produit, le débit de fuite du gaz propulseur étant choisi de façon telle que l'on puisse disposer d'un temps de distribution suffisant et la pression dans le compartiment n'étant ramenée à une pression permettant la distribution du produit que juste avant la distribution suivante. during a dispensing of the product, and after the step of dispensing the product, the leakage of the propellant gas flow being selected in such a way that one can have a sufficient residence time distribution and the pressure in the compartment not being brought back at a pressure allowing dispensing of the product just before the next dispensing.
  • Le gaz propulseur est un gaz comprimé, de préférence, de l'air. The propellant is a compressed gas, preferably air. Pour amener le compartiment contenant le gaz propulseur à une pression permettant la distribution, on introduit de préférence, le gaz propulseur, en particulier l'air comprimé, à l'aide d'un compresseur ou d'une autre source de gaz comprimé par l'intermédiaire d'une vanne disposée dans la paroi du compartiment contenant le gaz propulseur. To move the compartment containing the propellant gas at a pressure allowing distribution, is preferably introduced, the propellant gas, particularly compressed air, by means of a compressor or another source of compressed gas by via a valve arranged in the wall of the compartment containing the propellant gas. Le compresseur utilisé peut, par exemple, être celui décrit dans FR-A 2 656 047. The compressor used may, for example, be that described in FR-A 2,656,047.
  • Pour ramener à la pression atmosphérique la pression du second compartiment après une distribution, on ménage une fuite entre le second compartiment et l'atmosphère. To return to the atmospheric pressure the pressure of the second compartment after a distribution, one household leakage between the second compartment and the atmosphere. Lors de l'opération de mise sous pression du compartiment gazeux, on amène la pression à la valeur P1 supérieure à la pression atmosphérique et permettant la distribution par actionnement de la valve de distribution et on choisit le débit de fuite du gaz propulseur de façon telle que l'on puisse disposer d'un temps de distribution suffisant. When pressurized gas compartment of operation, it causes the pressure P1 to the upper value at atmospheric pressure and allowing the cast actuation of the dispensing valve and one chooses the leakage rate of the propellant in such a way that we can have sufficient time for distribution. On considère, en pratique, qu'un temps de distribution de 1 à 10 minutes est convenable dans le cas de la distribution de produits cosmétiques. Consider, in practice, a distribution time of 1 to 10 minutes is appropriate in the case of the distribution of cosmetics.
  • La présente invention a également pour objet un dispositif permettant la mise en oeuvre du procédé selon l' invention ; The present invention also relates to a device for carrying out the method according to the invention; un dispositif pour le conditionnement et la distribution d'un produit fluide comportant un récipient pressurisé à l'aide d'un gaz propulseur, le récipient comportant deux compartiments séparés par une cloison mobile, le premier compartiment contenant le produit fluide à distribuer et communiquant avec une valve de distribution portée par le récipient et le second compartiment contenant le gaz propulseur, la paroi du second compartiment portant une vanne d'alimentation en gaz propulseur comprimé et un dispositif de dépressurisation du gaz propulseur, caractérisé par le fait que ledit dispositif de dépressurisation consiste en une ouverture de fuite ne comportant pas de moyen de fermeture et permettant la fuite dans l'atmosphère du gaz propulseur. a device for packaging and dispensing a fluid product comprising a pressurized container with a propellant gas, the container having two compartments separated by a movable partition, the first compartment containing the fluid product to be dispensed and communicating with a dispensing valve carried by the container and the second compartment containing the propellant gas, the wall of the second compartment carrying a compressed propellant gas supply valve and a depressurization device the propellant gas, characterized in that said depressurizing device consists of a leakage opening having no closing means and allowing leakage into the atmosphere of the propellant.
  • L'ouverture de fuite peut être indépendante de la vanne d'alimentation en gaz propulseur et elle est alors, avantageusement, constituée par une micro-ouverture percée dans la paroi du second compartiment. The opening of leakage can be independent of the propellant gas supply valve and is then advantageously constituted by a micro-pierced opening in the wall of the second compartment. De préférence, l'ouverture de fuite fait partie de la vanne d'alimentation en gaz propulseur comprimé. Preferably, the leakage orifice forms part of the feed valve of compressed propellant gas. Par exemple, selon ce dernier mode de réalisation, la vanne d'alimentation en gaz propulseur comprimé est une vanne à clapet dont le clapet ne se referme pas de façon étanche sur son siège en position de fermeture lorsque l'alimentation en gaz propulseur est terminée. For example, according to the latter embodiment, the compressed propellant gas supply valve is a flap valve with a valve does not close tightly against its seat in the closed position when the propellant gas supply is closed . L'ouverture de fuite est alors constituée par l'espace existant entre le clapet et son siège. The leakage opening is then formed by the space between the valve and its seat. Selon un mode de réalisation préféré, la vanne est constituée par un clapet en matière élastique reposant sur un siège et une fine rainure est ménagée dans le siège et/ou le clapet de façon à créer une ouverture de fuite entre le clapet et son siège en position de fermeture. According to a preferred embodiment, the valve consists of a valve of elastic material resting on a seat and a fine groove is formed in the seat and / or valve so as to create an opening of leakage between the valve and its seat in closed position. Ce dernier mode de réalisation est avantageux car il n'y a pas de fuite de gaz propulseur comprimé pendant la phase de mise sous pression. This embodiment is advantageous because there is no leakage of compressed propellant gas during the pressurizing phase.
  • Pour mieux faire comprendre l'invention, on va en décrire, ci-après, à titre purement illustratif et non limitatif, deux modes de réalisation représentés sur le dessin annexé. For better understanding the invention will be described hereinafter, purely illustrative and not exhaustive, two embodiments shown in the accompanying drawing.
  • Sur ce dessin : On this drawing :
    • la figure 1 est une vue partiellement en coupe d'un premier mode de réalisation d'un dispositif selon l'invention, et Figure 1 is a partially sectional view of a first embodiment of a device according to the invention, and
    • la figure 2 est une vue en détail de la vanne d'alimentation en gaz du dispositif de la figure 1, Figure 2 is a detailed view of the gas supply valve of the Figure 1 device,
    • la figure 3 est une vue partiellement en coupe d'un second mode de réalisation d'un dispositif selon l'invention. Figure 3 is a partially sectional view of a second embodiment of a device according to the invention.
  • Sur la figure 1, le dispositif selon l'invention est désigné dans son ensemble par la référence 1. Le dispositif 1 est constitué par un récipient 2 divisé en deux compartiments 3 et 4 par une cloison mobile constituée par un piston 5. Le premier compartiment 3 contient le produit P à distribuer et le second compartiment 4 contient le gaz propulseur G. Sur le récipient 2, est sertie une valve 6 de distribution qui communique avec le compartiment 3 et qui porte une tige 7 pouvant être enfoncée à l'aide d'un bouton-poussoir (non représenté) pour actionner la valve 6 et distribuer le produit P. Selon le mode de réalisation représenté, le fond 8 du récipient 2 forme une cuvette de forme conique à concavité tournée vers l'extérieur et il est muni, en son centre, d'une vanne 9 formant bouchon qui sera décrite ci-après plus en détail. In Figure 1, the device according to the invention is denoted overall by the reference 1. The device 1 comprises a container 2 divided into two compartments 3 and 4 by a movable wall formed by a piston 5. The first compartment 3 contains the product P to be dispensed and the second compartment 4 contains the propellant gas G. on the container 2, is crimped a distribution valve 6 which communicates with the compartment 3 and which carries a rod 7 which can be pressed in using a push button (not shown) for actuating the valve 6 and dispensing the product P. in the embodiment shown, the bottom 8 of the container 2 forms a conical cup-shaped with its concavity facing the outside and it is provided at its center, a cap 9 forming a valve which will be described hereinafter in more detail.
  • Le piston 5 comporte un élément transversal 10 portant une jupe cylindrique 11 tournée vers le second compartiment 4. L'élément transversal 10 présente périphériquement une portion conique 12 dont la convexité est tournée vers le compartiment 3 et qui se raccorde en son centre à une dépression 13 tournée vers le compartiment 3. Selon l'exemple représenté, cette dépression 13 est formée de parois latérales successivement cylindrique, tronconique et cylindrique et d'un fond perpendiculaire à l'axe du récipient 2 ; The piston 5 comprises a cross member 10 carrying a cylindrical skirt 11 facing the second compartment 4. The cross member 10 has a circumferentially tapered portion 12 whose convexity is turned towards the compartment 3 and which is connected at its center with a depression 13 facing the compartment 3. in the example shown, this depression 13 is formed successively of cylindrical side walls, and frusto-conical cylindrical and a bottom perpendicular to the container axis 2; ainsi, la dépression 13 a une forme complémentaire de celle de la valve 6. thus, the depression 13 has a shape complementary to that of the valve 6.
  • La jupe cylindrique 11 du piston 5 est munie de deux lèvres d'étanchéité : une première lèvre 14 disposée au voisinage de l'élément transversal 10 et tournée vers le compartiment 3, et une seconde lèvre 15 située à l'extrémité ouverte de la jupe 11 et tournée vers le fond 8 du récipient 2. Un joint torique d'étanchéité 16 est disposé, dans une rainure 17 de la jupe 11, entre les lèvres 14 et 15. The cylindrical skirt 11 of the piston 5 is provided with two sealing lips, a first lip 14 arranged near the cross member 10 and facing the compartment 3, and a second lip 15 situated at the open end of the skirt 11 and turned towards the bottom 8 of the container 2. a sealing O-ring 16 is disposed in a groove 17 of the skirt 11 between the lips 14 and 15.
  • La vanne 9 est constituée de deux pièces s'emboîtant l'une dans l'autre : une membrane 18 en matériau élastique formant clapet et un corps 19 en matériau plastique rigide formant le siège du clapet. The valve 9 consists of two parts fitting one into the other: a membrane 18 of elastic material forming a valve body 19 and a rigid plastic material forming the valve seat. La membrane élastique 18 comporte une paroi latérale tronconique 20 dont l'extrémité de plus grand diamètre porte une rainure 27 permettant de fixer ladite membrane élastique 18, par claquage, sur le fond 8 du récipient 2. A l'extémité de plus faible diamètre de sa paroi latérale 20, la membrane élastique 18 se prolonge selon une pièce transversale 21 comportant une ouverture axiale 22. The elastic membrane 18 has a frusto-conical side wall 20, the end of greater diameter carries a groove 27 for fixing said elastic membrane 18, by snap on the bottom 8 of the container 2. At the lowest diameter of one end it its side wall 20, the elastic membrane 18 is extended by a transverse piece 21 having an axial opening 22.
  • Le corps rigide 19 a une forme complémentaire de la membrane élastique 18 et comporte donc une paroi latérale tronconique 25 prolongée selon une pièce transversale 26. Dans la paroi tronconique 25, est ménagé un conduit 23 qui est parallèle à l'axe de la vanne 9 et qui s'ouvre au voisinage de la jonction entre la paroi tronconique 25 et la pièce transversale 26. L'extrémité de plus grand diamètre de la paroi tronconique 25 se prolonge selon une paroi cylindrique 30 munie d'une collerette annulaire 28 qui définit, avec la paroi tronconique 25, une gorge 31 recevant l'extrémité de grand diamètre de la paroi tronconique 20 de la membrane élastique 18 : ainsi, lorsque le corps rigide 19 est fixé sur le fond 8 du récipient 2, la membrane élastique 18 fait joint d'étanchéité ; The rigid body 19 has a shape complementary to the resilient membrane 18 and thus has a frustoconical side wall 25 extended in a transverse piece 26. In the frustoconical wall 25, is formed a duct 23 which is parallel to the axis of the valve 9 and that opens in the vicinity of the junction between the frusto-conical wall 25 and the crosspiece 26. the end of larger diameter of the frustoconical wall 25 extends into a cylindrical wall 30 provided with an annular collar 28 which defines, with the frustoconical wall 25, a groove 31 receiving the large diameter end of the frustoconical wall 20 of the elastic membrane 18: thus, when the rigid body 19 is fixed to the bottom 8 of the receptacle 2, the elastic membrane 18 is attached sealing; une collerette annulaire 29 ménagée à la partie inférieure du corps 19 permet l'adaptation de la vanne 9 à un compresseur de gaz (non représenté). an annular collar 29 provided at the lower part of body 19 allows adapting the valve 9 to a gas compressor (not shown). A la surface extérieure du corps 19, est ménagée une rainure 24 qui, lorsque le corps rigide 19 et la membrane 18 sont assemblés, met en communication l'ouverture 22 et le conduit 23. At the outer surface of the body 19, is formed a groove 24 which, when the rigid body 19 and the membrane 18 are assembled, communicates the opening 22 and the conduit 23.
  • Le dispositif 1 fonctionne de la façon décrite ci-après. The device 1 operates as described below. Lorsque l'utilisateur désire distribuer le produit P contenu dans le compartiment 3 du récipient 2, il dispose le récipient 2 sur un compresseur de gaz (non représenté), en particulier d'air, de façon que la vanne 9 soit en communication avec la buse de distribution du compresseur. When the user wishes to dispense the product P contained in the compartment 3 of the container 2, it has the container 2 from a gas compressor (not shown), in particular air, so that the valve 9 is in communication with the compressor dispensing nozzle. Le gaz G comprimé passe par le conduit 23, déforme la membrane élastique 18 en la décollant du corps 19 et pénètre dans le compartiment 4 par l'ouverture 22. Il faut noter que la rainure 24, si elle laisse passer une certaine quantité de gaz propulseur G, ne permettrait pas à elle seule l'alimentation en gaz G du compartiment 4 en un temps court : la pression dans le compartiment 4, qui était égale à la pression atmosphérique, augmente. G compressed gas passes through line 23, deforms the elastic membrane 18 by peeling the body 19 and enters the compartment 4 through the opening 22. It should be noted that the groove 24 if it passes a certain amount of gas G propellant, would not in itself the supply of gas G of the compartment 4 in a short time: the pressure in the compartment 4, which was equal to the atmospheric pressure increases. On poursuit la mise sous pression jusqu'à ce que la pression atteigne une valeur P1 prédéterminée suffisante pour permettre la distribution du produit lorsqu'on actionne la valve de distribution 6. L'utilisateur arrête alors l'alimentation en gaz comprimé G et sépare le récipient 2 du compresseur. pressurizing until the pressure is continued reaches a predetermined value P1 sufficient to allow dispensing of the product upon actuation of the dispensing valve 6. The user then stops the supply of compressed gas G and separates the container 2 of the compressor.
  • La membrane élastique 18, sous l'action de cette pression P1, reprend sa position de repos sur le corps rigide 19 : la rainure 24 met en communication l'ouverture 22 et le conduit 23 et permet une faible fuite de gaz propulseur G du compartiment 4 dans l'atmosphère à travers le conduit 23. Peu après avoir enlevé le récipient 2 du compresseur, l'utilisateur actionne la valve 6 et distribue le produit P contenu dans le compartiment 3. Le piston 5 se déplace longitudinalement en translation vers la valve 6 malgré la légère fuite de gaz propulseur G par la vanne 9. Du fait du déplacement du piston et de la légère fuite de gaz propulseur G, la pression dans le compartiment 4 diminue. The elastic membrane 18, under the action of this pressure P1, resumes its rest position on the rigid body 19: groove 24 communicates the opening 22 and the duct 23 and allows a low leakage propellant gas compartment G 4 into the atmosphere through the conduit 23. Shortly after removing the container 2 of the compressor, the user actuates the valve 6 and distributes the product P contained in the compartment 3. the piston 5 moves longitudinally in translation towards the valve 6 despite the slight leakage of propellant gas G through the valve 9. Due to the movement of the piston and light leaking propellant gas G, the pressure in the compartment 4 decreases. On choisit les dimensions de la rainure 24 pour que le débit de fuite du gaz propulseur G soit tel que la distribution puisse durer de 1 à 10 minutes. It chooses the groove dimensions 24 for the leakage rate of the propellant gas G is such that the distribution can last from 1 to 10 minutes. Lorsque la distribution a cessé ou a été arrêtée, l'utilisateur ayant cessé d'actionner la valve 6, la pression à l'intérieur du compartiment 4 continue à décroître progressivement, jusqu'à ce qu'elle atteigne la pression atmosphérique grâce à la rainure 24 de la vanne 9. L'utilisateur ne rétablira une pression P1 dans le compartiment 4, que lorsqu'il désirera effectuer une nouvelle distribution de produit. When the dispensing has ceased or has been stopped, the user has ceased to operate the valve 6, the pressure within compartment 4 continues to decrease gradually until it reaches the atmospheric pressure thanks to the groove 24 of the valve 9. the user recovers a pressure P1 in the compartment 4 that when will desire to make a new product distribution.
  • Dans ces conditions, le dispositif 1 n'est pressurisé que quelques minutes au moment de l'emploi. Under these conditions, the device 1 is pressurized a few minutes at the time of employment. De plus, lorsque le gaz propulseur G est de l'air comprimé, le dispositif 1 n'est pas sensible à la chaleur et ne présente pas de danger d'explosion. In addition, when the propellant gas G is compressed air, the device 1 is not sensitive to heat and do not present a danger of explosion. En outre, il est écologique, le gaz rejeté dans l'atmosphère étant de l'air. In addition, it is environmentally friendly, the gas released into the atmosphere is air.
  • La figure 3 représente un second mode de réalisation d'un dispositif selon l'invention désigné dans son ensemble par la référence 101. Ce dispositif 101 comporte un récipient 102 séparé en deux compartiments : un compartiment 103 contenant le produit P à distribuer et un compartiment 104 contenant le gaz comprimé G. Ces deux compartiments sont séparés par une cloison mobile 105 qui est constituée par une poche déformable. 3 shows a second embodiment of a device according to the invention designated as a whole by the reference 101. The device 101 comprises a container 102 separated into two compartments: a compartment 103 containing the product P to be dispensed and a compartment 104 containing the compressed gas G. These two compartments are separated by a movable wall 105 which is constituted by a deformable pouch. Le fond du récipient 102 est muni d'une vanne 109 identique à celle illustrée sur la figure 2. Du côté opposé au fond du récipient portant la vanne 109 est sertie une valve 106 de distribution qui communique avec le compartiment 103 contenant le produit à distribuer P. La poche déformable 105 est fixée, par exemple, par une soudure 130 sur le corps de la valve 106. The container bottom 102 is provided with a valve 109 identical to that shown in Figure 2. On the side opposite to the bottom of the container bearing the valve 109 is crimped a valve 106 distribution which communicates with the compartment 103 containing the substance to be dispensed P. the deformable bag 105 is fixed, for example, by a weld 130 on the valve body 106.
  • Dans ce dispositif, on n'établit dans le compartiment 104 une pression P, permettant la distribution, qu'au moment de la distribution, la pression dans le compartiment 104 revenant ensuite à la pression atmosphérique. In this device, there is established in the compartment 104 a pressure P, allowing the distribution, at the time of distribution, the pressure in the compartment 104 then returning to atmospheric pressure. Par conséquent, même si les parois de la poche 105 sont légèrement perméables au gaz, le gaz n'aura pratiquement pas tendance à traverser la paroi de la poche et les risques de dégradation du produit P contenu dans la poche sont faibles. Therefore, even if the walls of the pocket 105 are slightly permeable to the gas, the gas will have virtually no tendency to pass through the wall of the bag and the risk of degradation of P contained in the pocket are low.

Claims (11)

  1. Method for packaging and dispensing a fluid product (P) contained in a receptacle (2, 102) which is pressurized with the aid of a propellant gas (G), the receptacle (2, 102) including two compartments (3, 103; 4, 104) which are separated by a moving partition (5, 105), a first compartment (3, 103) containing the fluid product (P) and being in communication with a valve (6, 106) for dispensing the product (P) and the second compartment (4, 104) containing the propellant gas (G) and equipped with a device for letting the pressurized propellant gas in, and with a device for depressurizing the propellant gas, characterized in that in the second compartment (4, 104), before each dispensing act, the propellant gas (G) is brought to a pressure P1 allowing the fluid product (P) to be dispensed by action on the dispensing valve (6), that dispensing is carried out, lowering the pressure in the second compartment (4, 104) to atmospheric pressure by virtue of a leakage of propellant gas (G) between the second compartment (4, 104) and the atmosphere during the dispensing of the product, and after the step of dispensing the product, the leakage flow rate of the propellant gas (G) being chosen such that sufficient dispensing time is available, the pressure in the compartment (4, 104) not being brought back up to a pressure allowing dispensing of the product (P) until just before the next dispensing act.
  2. Method according to Claim 1, characterized in that the propellant gas (G) is compressed air.
  3. Method according to one of Claims 1 and 2, characterized in that the dispensing time is from 1 to 10 minutes.
  4. Device for packaging and dispensing a fluid product (P) including a receptacle (2, 102) which is pressurized with the aid of a propellant gas (G), the receptacle (2, 102) including two compartments (3, 103 and 4, 104) which are separated by a moving partition (5, 105), the first compartment (3, 103) containing the fluid product (P) to be dispensed and communicating with a dispensing valve (6, 106) carried by the receptacle (2, 102) and the second compartment (4, 104) containing the propellant gas (G), the wall of the second compartment (4, 104) carrying a valve (9, 109) for feeding with compressed propellant gas (G) and a device for depressurizing the propellant gas, characterized in that the said depressurization device consists in a leakage orifice (22, 23, 24) which does not have any closure means and allows the propellant gas (G) to leak into the atmosphere.
  5. Device according to Claim 4, characterized in that the moving partition (5) is a piston.
  6. Device according to Claim 4, characterized in that the moving partition (105) is a deformable pouch.
  7. Device according to Claim 4, characterized in that the leakage orifice is a micro-orifice pierced in the wall of the compartment (4, 104).
  8. Device according to Claim 4, characterized in that the leakage orifice (22, 23, 24) forms part of the valve (9, 109) for feeding with compressed propellant gas (G).
  9. Device according to Claim 8, characterized in that the valve (9, 109) for feeding with compressed propellant gas (G) is a valve with a shut-off element, in which the shut-off element does not rest on its seat in a leaktight fashion in the closed position.
  10. Device according to Claim 9, characterized in that the valve (9, 109) for feeding with compressed propellant gas (G) includes an elastic shut-off element interacting with a seat and a groove is formed in the shut-off element and/or the seat so as to create the leakage orifice between the shut-off element and its seat in the closed position.
  11. Device according to Claim 10, characterized in that the shut-off element is made up of an elastic membrane (18) interacting with a rigid body (19), the elastic membrane (18) being provided with an orifice (22) and the rigid body (19) being provided with a duct (23), a groove (24) being formed in the rigid body (19) so as to place the orifice (22) and the duct (23) in communication even when the valve is in the closed position.
EP19940401909 1993-09-10 1994-08-29 Process and device for storing and dispensing a fluid product held in a container pressurized with a propellant gas Expired - Lifetime EP0642839B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9310774 1993-09-10
FR9310774A FR2709738B1 (en) 1993-09-10 1993-09-10 A method and a dispensing device and method of packaging a fluid product contained in a container pressurized with a propellant gas.

Publications (2)

Publication Number Publication Date
EP0642839A1 EP0642839A1 (en) 1995-03-15
EP0642839B1 true EP0642839B1 (en) 1996-09-25

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EP19940401909 Expired - Lifetime EP0642839B1 (en) 1993-09-10 1994-08-29 Process and device for storing and dispensing a fluid product held in a container pressurized with a propellant gas

Country Status (5)

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US (1) US5522526A (en)
EP (1) EP0642839B1 (en)
DE (2) DE69400608D1 (en)
ES (1) ES2092385T3 (en)
FR (1) FR2709738B1 (en)

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FR2773543B1 (en) * 1998-01-14 2000-02-18 Oreal Packaging and dispensing under pressure, put it under pressure extemporaneous
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FR2781210B3 (en) * 1998-07-17 2000-08-18 Cebal creamy product dispenser under pressure provided with a sealed piston
FR2781209B1 (en) * 1998-07-17 2000-08-25 Cebal creamy product dispenser under pressure provided with a sealed piston
US6244475B1 (en) * 1999-06-21 2001-06-12 David K. Walz Hair treatment dispensing container
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US6299024B1 (en) 2000-07-05 2001-10-09 Robert E. Corba Valve assembly for dispensing container
US6325248B1 (en) 2000-07-05 2001-12-04 Robert E. Corba Container assembly
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JPH05254575A (en) * 1992-03-13 1993-10-05 Asia Kinzoku Kogyo Kk Double aerosol container

Also Published As

Publication number Publication date
FR2709738A1 (en) 1995-03-17
FR2709738B1 (en) 1995-11-10
ES2092385T3 (en) 1996-11-16
EP0642839A1 (en) 1995-03-15
DE69400608T2 (en) 1997-02-06
DE69400608D1 (en) 1996-10-31
US5522526A (en) 1996-06-04

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