EP0494004B1 - Device for dispensing, under pressure, a product, especially a foaming product, and methods of filling a container for such a device - Google Patents

Device for dispensing, under pressure, a product, especially a foaming product, and methods of filling a container for such a device Download PDF

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Publication number
EP0494004B1
EP0494004B1 EP19910403465 EP91403465A EP0494004B1 EP 0494004 B1 EP0494004 B1 EP 0494004B1 EP 19910403465 EP19910403465 EP 19910403465 EP 91403465 A EP91403465 A EP 91403465A EP 0494004 B1 EP0494004 B1 EP 0494004B1
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EP
European Patent Office
Prior art keywords
container
pouch
valve
propellant means
opening
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
EP19910403465
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German (de)
French (fr)
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EP0494004A1 (en
Inventor
Jean-Pierre Yquel
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LOreal SA
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LOreal SA
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    • 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
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/003—Adding propellants in fluid form to aerosol containers

Definitions

  • the invention relates to a device for dispensing a product under pressure, in particular a foaming product such as shaving foam, make-up removing foam, body foam, hair or deodorant product, comprising a container provided, at the top, with an opening. on which is mounted a dispensing valve, and a flexible pocket, made of a membrane impermeable to liquids but sufficiently permeable to gases to allow to maintain a balance of the gas pressure of a propellant between the volume outside the pocket located in the container and the interior of this pocket, which contains an active product to be dispensed, which is not in the gaseous state, the flexible pocket being impermeable to this active product, and a propellant means, while the volume of the container located around the pocket also contains a propellant means.
  • a foaming product such as shaving foam, make-up removing foam, body foam, hair or deodorant product
  • a device of this kind is known from FR-A-2 233 843.
  • the total pressure in the container is equal to the sum of the pressures of two propellants and is relatively high.
  • the risk of creating prisoner spaces by coming into contact with opposite walls of the flexible bag, preventing total emptying of the product, is increased.
  • a perforated tube is provided in the pocket to act as an anti-prisoner.
  • FR-A-2 281 290 relates to a small rechargeable aerosol canister comprising a flexible bag permeable to the gas phase but not to liquids.
  • the volume surrounding the pocket is under pressure relative to its interior, and part of the gas phase of the propellant passes through the wall of the pocket. and will increase the pressure in the space around it.
  • the absence of a dip tube is mentioned. However, no indication is provided as to the problem of creating prisoner spaces that can oppose a complete emptying of the product.
  • the object of the invention is, above all, to provide a device of the kind defined above which makes it possible to obtain better consistency of the flow rate and of the characteristics of the product delivered between the start and the end of use of the device. It is further desired that the device can be used in any position, in particular upside down.
  • the vapor pressure, at the existing temperature, of the liquid / vapor balance of the propellant means, in the container is of the order of 3 bars.
  • the device of the invention takes advantage of the permeability of a membrane to maintain a gas balance.
  • Such a device can be used for all products using aerosol technology such as body foams, hair foams, sprays such as deodorants, etc.
  • the product to be dispensed is located inside the flexible bag.
  • the pocket membrane is impermeable to the product which remains confined inside this pocket.
  • the pocket membrane is advantageously made of one of the materials belonging to the group: polyethylene, polypropylene, polyethylene / terephthalate.
  • This membrane can be formed by a combination of polyolefin films and / or polyesters.
  • the thickness of the membrane of the pocket can be between 0.2 and 0.6 mm, depending on the nature of the material used to form the pocket.
  • the oxygen permeability of the membrane forming the pocket is advantageously between 150 cm3 / m2 / 24 hours and 400 cm3 / m2 / 24 hours.
  • the invention also relates to a method for filling a device as defined above for the pressure distribution of a product, in particular a foaming and / or capillary product.
  • FIGS 1 a to 1 e of these drawings schematically illustrate steps of a first method of filling and manufacturing a device for dispensing active product under pressure, according to the invention.
  • Figures 2 a to 2 e illustrate a second possibility of filling and manufacturing.
  • Figures 3 a to 3 e illustrate a third possibility of filling and manufacturing the device.
  • Figures 4 a to 4 e illustrate a fourth possibility of filling and manufacturing.
  • Figures 5 a to 5 e illustrate a fifth possibility of filling and manufacturing.
  • Figures 6 a to 6 e illustrate a sixth possibility of filling and manufacturing.
  • FIG. 7 is a graph representing the flow rate in grams / seconds, plotted on the ordinate, provided by a device according to the invention, as a function of the time plotted on the abscissa, each point corresponding to a spraying for five seconds, this spraying being carried out at spaced apart time intervals.
  • Figure 8 is a graph illustrating the pressure variation in the pocket of a device according to the invention, as a function of the time plotted on the abscissa.
  • FIG. 9 is a comparative graph of the flow rate plotted on the ordinate, as a function of the number of flow rates, plotted on the abscissa, with a device according to the invention and with a device according to the prior art.
  • FIG. 10 is a comparative graph illustrating the variation of the pressure of the product, plotted on the ordinate, as a function of the number of flow rates, plotted on the abscissa, in a device according to the invention and in a slide of the state of the art.
  • FIG. 11 is a graph giving the variations in the density of the product dispensed, plotted on the ordinate, as a function of the rate of emptying plotted in abacisse for a dispensing device according to the prior art and for a device according to the invention, under specific conditions explained below.
  • a device 1 for dispensing under pressure an active product 2 for example a foaming product such as shaving foam, make-up removing foam, hair foam, or a sprayed product. (spray) such as a deodorant.
  • an active product 2 for example a foaming product such as shaving foam, make-up removing foam, hair foam, or a sprayed product. (spray) such as a deodorant.
  • the device 1 comprises a conventional container 3, in the form of a can, made of aluminum or tinplate, or of plastic. As a variant, this container 3 could be made of glass.
  • the container 3 is provided, in the upper part, with an opening 4 delimited by a peripheral cord 5 with circular cross section.
  • this cord 5 can be formed by the rolled edge of the opening 4.
  • the container 3 has in its wall, preferably in the bottom wall 6, a filling orifice 7, closed by a filling plug 8 constituted for example by a pad of elastomeric material.
  • a flexible pocket 9 is disposed inside the container 3, this pocket comprising in the upper part an opening limited by an edge which is applied, in a sealed manner, against the peripheral bead 5 delimiting the opening 4 of the container 3.
  • the part 10 located inside the container 3 and outside the pocket 9 is closed in a sealed manner.
  • a conventional dispensing valve 11 is fixed in leaktight manner, by crimping the edge of a cup 12 on the peripheral bead 5.
  • This valve 11 comprises an axial rod 13 intended to be pushed in by the user to cause the opening of said valve and the distribution of the product.
  • the edge of the opening of the pocket 9 is sandwiched between the cord 5 and the edge of the cup 12.
  • the device 1 with a view to its use, is equipped with a dispensing head (not shown) which covers the opening 4 and the dispensing valve 11.
  • This dispensing head comprises a pusher on which the user can act to push in the rod 13.
  • the active product 2 to be dispensed is located inside the flexible bag 9 and the valve 11 is devoid of dip tube.
  • a certain amount of a propellant means 14 is introduced into the part 10 of the container 3, located around the flexible bag 9.
  • This propellant means 14 is constituted by a liquid / vapor balance suitable for maintaining a sufficient pressure (of the order 3 bars) corresponding to the vapor pressure, at the temperature considered, of the liquid used.
  • the introduction of the propellant means 14 into the part 10 can be carried out using a hypodermic needle A inserted in the plug 8. During the withdrawal of the needle A, the plug 8 continues to seal.
  • the flexible bag 9 is formed by a membrane which is sufficiently permeable to allow the propellant means to pass, in gaseous form, through said membrane in order to balance the pressure of the propellant means between the interior of the bag 9 and the external part 10.
  • the membrane of the pocket 9 is impermeable with respect to the active product 2 which remains confined inside this pocket.
  • the introduction of the active product into the bag 9 can be carried out through the valve 11.
  • a certain amount of the same propellant means is introduced, also through the valve 11, into the bag 9, in particular for expanding the product to be dispensed .
  • the flexible bag 9 can be fixed on the valve body 11, or on the body of the container 3, or else wedged between the peripheral cord 5 and the cup 12 as described above.
  • the pocket 9 can be made of one of the materials belonging to the group: polyethylene, polypropylene, polyethylene / terephthalate.
  • the pocket is formed by a combination of polyolefin films and / or polyesters.
  • the thickness of the membrane constituting the pocket 9 can be between 0.2 and 0.6 mm, depending on the nature of the material used to form this membrane.
  • the permeability of the pocket (membrane) to oxygen is advantageously between 150 cm3 / m2 / 24 hours and 400 cm3 / m2 / 24 hours.
  • This pocket 9 which has a certain permeability allows the liquefied propellant means which is located in the part 10 of the container 3 to ensure the gas phase replenishment of the active product 2 contained in the pocket 9 so that there is always supersaturation in propellant in this pocket 9.
  • the permeability of the bag makes it possible to obtain a constancy of the flow rate of active product and of the pressure in the bag 9 during use, from the start to the end.
  • Figures 7 and following are graphs illustrating results obtained with a device according to the invention, during tests carried out with a foaming product. Some of these graphs make it possible to compare the results according to the invention with the results obtained with a device of the prior art.
  • the tests consisted, using a device according to the invention filled with body foam in the pocket 9, to be pressed for 5 s. on the stem 13 of the valve 11 at times spaced in time as shown on the abscissa axis, that is to say at time 0, after half an hour, one hour, d 'an hour and a half, two hours, three hours etc.
  • the product delivered by the device is collected and weighed.
  • the flow rate in grams / seconds is obtained by dividing the mass collected by the expulsion time.
  • the graph in FIG. 8 illustrates the variations in pressure in bars, plotted on the abscissa, inside the pocket 9, for the device of the invention which was used for the tests summarized by the graph in FIG. 7.
  • the graph in FIG. 9 illustrates the results of comparative tests between a device in accordance with the invention (measurement results carried in the form of white squares) whose pocket 9, having a certain permeability, was made of PVC (polyvinyl chloride) ), and a device according to the state of the art in which the flexible pouch was made of impermeable material (aluminum foil), the active product being located inside the pouch; the measurement points for the device of the state of the art are represented by black squares in FIG. 9.
  • the flow curve for the device of the invention is located below the curve according to the state of the art for the first five sprays and then sits above this other curve from the sixth spray.
  • the drop in flow rate according to the invention (from approximately 1.8 g / s for the first spray to approximately 1.5 g / s for the tenth spray) is much smaller when the number of sprays increases, than in the case state of the art (from about 1.9 g / s for the first spray to about 0.8 g / s for the tenth spray).
  • FIG. 10 is a comparative graph of the device according to the invention used for the tests of FIG. 9 with a device according to the state of the art, giving the evolution of the pressure in bars plotted on the ordinate in the volume containing the product active, depending on the number of debits.
  • the graph in FIG. 11 summarizes another type of comparative test carried out between a device according to the invention (measurement points represented by white squares) and a device conforming to the state of the art (black squares).
  • the volume containing the active product was not filled, during manufacture, with propellant.
  • the active product for which the active product is in the pocket 9, there has been no injection of propellant into this pocket 9.
  • the active product for which the active product is inside the flexible pouch, there has been no of propellant injection into this pocket.
  • an expanded foam is obtained although no propellant means has been introduced into the volume containing the active product.
  • the density remains substantially constant during the emptying.
  • the flexible bag being waterproof, the propellant means contained in this bag could not diffuse into the active product.
  • FIG. 1 a According to a first possibility (FIGS. 1 a -1 e ), as illustrated in FIG. 1 a , after having introduced the bag 9 into the container 3, this bag is filled with the expected quantity of active product 2 to be distributed (FIG. 1 a ).
  • valve 11 is then placed over the opening of the pocket 9 and of the container 3 and the cup 12 is crimped onto the edge 5 of the opening of the container, sealingly sealing the upper edge of the pocket 9 between the rim 5 and the part of the cup applied against this rim.
  • This step is illustrated in Figure 1b .
  • a quantity of propellant 14 is introduced inside the pocket 9 by injection through the valve 11, as illustrated in FIG. 1 c .
  • Another quantity of the same propellant means 14 is then injected into the part 10 of the interior volume of the container 3 situated outside the pocket 9, through the orifice 7.
  • the injection can be carried out using a hypodermic needle A inserted in the plug 8. This step is illustrated in FIG. 1 d .
  • the bag 9 is then purged by pressing the rod 13 of the valve 11 for a few seconds.
  • the container 1, shown in Figure 1 e is then ready to operate.
  • the bag 9 is filled with the expected quantity of active product 2, as in the case of Figure 1 e .
  • valve 11 is then placed on the opening of the container 3 and a vacuum is made, through this valve 11, in the pocket 9 to eliminate the air which is above the active product 2. This step is illustrated on Figure 2 b .
  • a quantity of the same propellant means 14 is then introduced through the orifice 7, into the volume 10 situated outside the pocket 9, as illustrated in FIG. 2 d .
  • the bag 9 is then purged by pressing one or two seconds on the valve 11 as illustrated in FIG. 2 e and the device 1 is then ready to operate.
  • Figures 3 a -3 e illustrate a third possibility of filling.
  • Figures 3 a, 3 b correspond to steps identical to those of Figures 1a, 1b and their description will be omitted.
  • Step s uivante of Figure 3c corresponds to the introduction of a quantity of propellant means 14 to the outside of the bag 9 in the volume 10, this introduction being carried by the orifice 7.
  • the bag 9 is then purged by pressing the valve 11 until the active product appears. This step corresponds to Figure 3 d .
  • valve 11 is placed on the opening of the container and of the bag and the cup 12 of the valve on the flange 5.
  • propellant 14 is introduced into the container 3 through the orifice 7, in the volume 10.
  • the pressure exerted by the propellant compresses the pocket 9 as illustrated diagrammatically in FIG. 4 b .
  • a complete purge of the air enclosed by the bag 9 is then carried out by pressing on the valve 11.
  • the walls of the bag are applied against each other under the effect of the pressure of the propellant means contained in volume 10 and the air is expelled to the outside. This step is shown schematically in Figure 4c .
  • the active product 2 is then introduced inside the pocket 9 by injection through the valve 11.
  • the state of the device at the end of this injection is shown in FIG. 4 d .
  • a quantity of propellant 14 is introduced into the pocket 9 by injection through the valve 11 to end up with the device ready for operation illustrated in FIG. 4 e .
  • Figures 5 a -5 e illustrate a fifth filling possibility.
  • the active product 2 is introduced into the bag 9 by injection through the valve 11.
  • the purge of the pocket 9 is then carried out by pressing on the valve 11 of the aorta that the level of the active product 2, expanded by the propellant, approaches the valve 11 as illustrated in FIG. 5 e .
  • Figures 6 a -6 e illustrate a filling ability of a container 3 is free of the filling orifice of the preceding figures.
  • a quantity of propellant 14 is introduced through the upper opening 4 a of the container 3 a , when cold, that is to say at a temperature low enough for the propellant to remain in the liquid state under atmospheric pressure .
  • the pocket 9 is then introduced into the container 3 a, then the valve 11 is placed on the opening 4 a and the cup 12 is crimped on the edge 5 a , as illustrated in FIG. 6 b .
  • the propellant means 14 located in the volume 10 is then trapped in a sealed manner. It is no longer necessary to keep the container 3 a at low temperature.
  • the active product 2 is introduced inside the bag 9 by injection through the valve 11.
  • the bag 9 is then purged by actuating the valve 11, as illustrated in FIG. 6 d .
  • a quantity of propellant 14 is then injected through the valve 11 inside the pocket 9.
  • the device 1 a is ready to operate.
  • the invention provides a device for dispensing pressurized product which can be used upside down and upside down and which ensures good constancy of the flow rate and of the characteristics of the product. delivered.

Description

L'invention est relative à un dispositif pour distribuer sous pression un produit, en particulier un produit moussant tel que mousse à raser, mousse démaquillante, mousse corporelle, produit capillaire ou déodorant, comprenant un récipient muni, en partie haute, d'une ouverture sur laquelle est montée une valve de distribution, et une poche souple, réalisée en une membrane imperméable aux liquides mais suffisamment perméable aux gaz pour permettre de maintenir un équilibre de la pression gazeuse d'un moyen propulseur entre le volume extérieur à la poche situé dans le récipient et l'intérieur de cette poche, laquelle contient un produit actif à distribuer, qui n'est pas à l'état gazeux, la poche souple étant imperméable à ce produit actif, et un moyen propulseur, tandis que le volume du récipient situé autour de la poche contient également un moyen propulseur.The invention relates to a device for dispensing a product under pressure, in particular a foaming product such as shaving foam, make-up removing foam, body foam, hair or deodorant product, comprising a container provided, at the top, with an opening. on which is mounted a dispensing valve, and a flexible pocket, made of a membrane impermeable to liquids but sufficiently permeable to gases to allow to maintain a balance of the gas pressure of a propellant between the volume outside the pocket located in the container and the interior of this pocket, which contains an active product to be dispensed, which is not in the gaseous state, the flexible pocket being impermeable to this active product, and a propellant means, while the volume of the container located around the pocket also contains a propellant means.

Un dispositif de ce genre est connu de FR-A-2 233 843. Selon ce document, la pression totale dans le récipient est égale à la somme des pressions de deux propulseurs et est relativement élevée. Le risque de création d'espaces prisonniers par venue en contact de parois opposées de la poche souple, empêchant une vidange totale du produit, est augmenté. Pour éviter cet inconvénient, un tube perforé est prévu dans la poche pour agir comme anti-prisonnier.A device of this kind is known from FR-A-2 233 843. According to this document, the total pressure in the container is equal to the sum of the pressures of two propellants and is relatively high. The risk of creating prisoner spaces by coming into contact with opposite walls of the flexible bag, preventing total emptying of the product, is increased. To avoid this drawback, a perforated tube is provided in the pocket to act as an anti-prisoner.

FR-A-2 281 290 concerne un boîtier aérosol rechargeable de petite dimension comportant une poche souple perméable à la phase gazeuse mais non aux liquides. Lors de la recharge de la poche du boîtier aérosol, le volume qui entoure la poche est en sous-pression par rapport à son intérieur, et une partie de la phase gazeuse du propulseur traverse la paroi de la poche et va augmenter la pression dans l'espace qui l'entoure. A propos de l'utilisation de ce boitier aérosol, l'absence d'un tube plongeur est évoquée. Toutefois, aucune indication n'est fournie quant au problème de la création d'espaces prisonniers pouvant s'opposer à une vidange complète du produit.FR-A-2 281 290 relates to a small rechargeable aerosol canister comprising a flexible bag permeable to the gas phase but not to liquids. When recharging the pocket of the aerosol canister, the volume surrounding the pocket is under pressure relative to its interior, and part of the gas phase of the propellant passes through the wall of the pocket. and will increase the pressure in the space around it. Regarding the use of this aerosol can, the absence of a dip tube is mentioned. However, no indication is provided as to the problem of creating prisoner spaces that can oppose a complete emptying of the product.

On sait que la constance du débit de produit délivré est fortement altérée par l'apparition de tels espaces prisonniers.It is known that the constancy of the flow rate of product delivered is greatly altered by the appearance of such prisoner spaces.

L'invention a pour but, surtout, de fournir un dispositif du genre défini précédemment qui permette d'obtenir une meilleure constance du débit et des caractéristiques du produit délivré entre le début et la fin d'utilisation du dispositif. On souhaite en outre que le dispositif puisse être utilisé en toutes positions, notamment tête en bas.The object of the invention is, above all, to provide a device of the kind defined above which makes it possible to obtain better consistency of the flow rate and of the characteristics of the product delivered between the start and the end of use of the device. It is further desired that the device can be used in any position, in particular upside down.

Selon l'invention, un dispositif pour distribuer sous pression un produit actif, notamment un produit moussant, déodorant ou un produit capillaire, du genre défini précédemment, est caractérisé par le fait que :

  • la valve est dépourvue de tube plongeur,
  • le moyen propulseur situé dans le volume du récipient est identique à celui introduit dans la poche, et est constitué par un équilibre liquide/vapeur propre à maintenir une pression suffisante correspondant à la pression de vapeur à la température considérée, le moyen propulseur sous forme gazeuse passant dudit volume vers l'intérieur de ladite poche.
According to the invention, a device for dispensing under pressure an active product, in particular a foaming, deodorant or hair product, of the kind defined above, is characterized in that:
  • the valve does not have a dip tube,
  • the propellant means located in the volume of the container is identical to that introduced into the pocket, and is constituted by a liquid / vapor equilibrium capable of maintaining a sufficient pressure corresponding to the vapor pressure at the temperature considered, the propellant means in gaseous form passing from said volume towards the inside of said pocket.

Avantageusement, la pression de vapeur, à la température existante, de l'équilibre liquide/vapeur du moyen propulseur, dans le récipient, est de l'ordre de 3 bars.Advantageously, the vapor pressure, at the existing temperature, of the liquid / vapor balance of the propellant means, in the container, is of the order of 3 bars.

Le dispositif de l'invention met à profit la perméabilité d'une membrane pour maintenir un équilibre gazeux.The device of the invention takes advantage of the permeability of a membrane to maintain a gas balance.

Un tel dispositif est utilisable pour tous les produits utilisant la technologie aérosol tels que les mousses corporelles, les mousses capillaires, les sprays tels que déodorants etc... Le produit à distribuer est situé à l'intérieur de la poche souple.Such a device can be used for all products using aerosol technology such as body foams, hair foams, sprays such as deodorants, etc. The product to be dispensed is located inside the flexible bag.

Bien entendu, la membrane de la poche est imperméable à l'égard du produit qui reste confiné à l'intérieur de cette poche.Of course, the pocket membrane is impermeable to the product which remains confined inside this pocket.

La membrane de la poche est avantageusement réalisée en un des matériaux appartenant au groupe :
polyéthylène, polypropylène, polyéthylène/téréphtalate.The pocket membrane is advantageously made of one of the materials belonging to the group:
polyethylene, polypropylene, polyethylene / terephthalate.

Cette membrane peut être constituée par une association de films de polyoléfines et/ou de polyesters.This membrane can be formed by a combination of polyolefin films and / or polyesters.

L'épaisseur de la membrane de la poche peut être comprise entre 0,2 et 0,6 mm, selon la nature du matériau utilisé pour constituer la poche.The thickness of the membrane of the pocket can be between 0.2 and 0.6 mm, depending on the nature of the material used to form the pocket.

La perméabilité à l'oxygène de la membrane formant la poche est avantageusement comprise entre 150 cm3/m2/24 heures et 400 cm3/m2/24 heures.The oxygen permeability of the membrane forming the pocket is advantageously between 150 cm3 / m2 / 24 hours and 400 cm3 / m2 / 24 hours.

L'invention est également relative à un procédé de remplissage d'un dispositif tel que défini précédemment pour la distribution sous pression d'un produit, notamment d'un produit moussant et/ou capillaire.The invention also relates to a method for filling a device as defined above for the pressure distribution of a product, in particular a foaming and / or capillary product.

Selon une première possibilité, un tel procédé est caractérisé par le fait que :

  • on remplit la poche avec le produit actif à distribuer ;
  • on place la valve sur l'ouverture du récipient et de la poche puis on la sertit sur le récipient ;
  • on introduit une quantité de moyen propulseur à l'intérieur de la poche par injection au travers de la valve ;
  • on agite éventuellement ;
  • on injecte une autre quantité du même moyen propulseur dans la partie du volume intérieur du récipient située à l'extérieur de la poche, par un orifice prévu dans le récipient, en général à sa partie inférieure ;
  • et on purge la poche en appuyant quelques secondes sur la valve.
According to a first possibility, such a method is characterized in that:
  • the bag is filled with the active product to be dispensed;
  • the valve is placed over the opening of the container and of the pocket and then it is crimped onto the container;
  • an amount of propellant is introduced inside the bag by injection through the valve;
  • it is optionally agitated;
  • another quantity of the same propellant means is injected into the part of the interior volume of the container situated outside the pocket, through an orifice provided in the container, generally at its lower part;
  • and we purge the pocket by pressing a few seconds on the valve.

Selon une autre possibilité, le procédé de remplissage est caractérisé par le fait que :

  • on remplit la poche avec le produit actif ;
  • on place la valve sur l'ouverture du récipient ;
  • on fait le vide pour éliminer l'air se trouvant au-dessus du produit actif dans la poche ;
  • on sertit la valve sur le bord de l'ouverture du récipient ;
  • on introduit une quantité de moyen propulseur à l'intérieur de la poche, par injection au travers de la valve ;
  • on introduit une autre quantité du même moyen propulseur à l'extérieur de la poche dans le récipient, par un orifice prévu dans la paroi de ce récipient, notamment à sa partie inférieure ;
  • on purge la poche en appuyant une ou deux secondes sur la valve.
According to another possibility, the filling process is characterized in that:
  • the bag is filled with the active product;
  • the valve is placed on the opening of the container;
  • a vacuum is created to remove the air above the active product in the bag;
  • the valve is crimped on the edge of the container opening;
  • a quantity of propellant is introduced inside the pocket, by injection through the valve;
  • another quantity of the same propellant means is introduced outside the pocket into the container, through an orifice provided in the wall of this container, in particular at its lower part;
  • the bag is purged by pressing the valve for one or two seconds.

Selon une troisième possibilité, le procédé de remplissage est caractérisé par le fait que :

  • on remplit la poche avec le produit actif ;
  • on pose la valve et on la sertit sur le récipient ;
  • on introduit une quantité de moyen propulseur dans le récipient à l'extérieur de la poche par un orifice prévu dans la paroi du récipient, notamment à sa partie inférieure ;
  • on purge la poche en appuyant sur la valve jusqu'à apparition du produit actif ;
  • on introduit une autre quantité du même moyen propulseur à l'intérieur de la poche, par injection au travers de la valve.
According to a third possibility, the filling process is characterized in that:
  • the bag is filled with the active product;
  • the valve is placed and it is crimped onto the container;
  • an amount of propellant is introduced into the container outside the pocket through an orifice provided in the wall of the container, in particular at its lower part;
  • the bag is purged by pressing the valve until the active product appears;
  • another amount of the same propellant is introduced inside the pocket, by injection through the valve.

Selon une quatrième possibilité, le procédé de remplissage est caractérisé par le fait que :

  • on effectue la pose de la valve sur le récipient et sur la poche ;
  • on sertit la valve sur le récipient ;
  • on introduit une quantité de moyen propulseur à l'extérieur de la poche, dans le récipient, par un orifice prévu dans la paroi du récipient, notamment à sa partie inférieure ;
  • on effectue une purge complète de la poche ;
  • on introduit le produit actif à l'intérieur de la poche par injection au travers de la valve ;
  • on introduit une autre quantité du même moyen propulseur dans la poche par injection au travers de la valve.
According to a fourth possibility, the filling process is characterized in that:
  • the valve is placed on the container and pocket;
  • the valve is crimped onto the container;
  • a quantity of propellant is introduced outside the pocket, into the container, through an orifice provided in the wall of the container, in particular at its lower part;
  • a complete purge of the bag is carried out;
  • the active product is introduced inside the pocket by injection through the valve;
  • another amount of the same propellant is introduced into the pocket by injection through the valve.

Selon une cinquième possibilité, le procédé de remplissage est caractérisé par le fait que :

  • on pose la valve ;
  • on sertit la valve sur le récipient ;
  • on introduit une quantité de moyen propulseur par un orifice situé dans la paroi du récipient ;
  • on introduit le produit actif à distribuer dans la poche par injection au travers de la valve ;
  • on introduit une autre quantité du même moyen propulseur dans la poche par injection au travers de la valve ;
  • on agite éventuellement ;
  • et on purge la poche.
According to a fifth possibility, the filling process is characterized in that:
  • the valve is placed;
  • the valve is crimped onto the container;
  • an amount of propellant is introduced through an orifice located in the wall of the container;
  • the active product to be dispensed is introduced into the bag by injection through the valve;
  • another amount of the same propellant is introduced into the bag by injection through the valve;
  • it is optionally agitated;
  • and we purge the pocket.

Selon une dernière possibilité, dans le cas d'un récipient ne comportant pas d'orifice de remplissage dans sa paroi, le procédé est caractérisé par le fait que :

  • on introduit une quantité de moyen propulseur à froid à l'intérieur du récipient ;
  • on introduit la poche dans le récipient et on pose la valve sur l'ouverture de la poche et du récipient ;
  • on sertit la valve sur la bordure de l'ouverture du récipient ;
  • on introduit le produit actif à l'intérieur de la poche par injection au travers de la valve ;
  • on purge la poche ;
  • et on introduit une autre quantité du même moyen propulseur à l'intérieur de la poche par injection au travers de la valve.
According to a last possibility, in the case of a container having no filling orifice in its wall, the method is characterized in that:
  • a quantity of cold propellant is introduced inside the container;
  • the bag is introduced into the container and the valve is placed on the opening of the bag and the container;
  • the valve is crimped on the edge of the container opening;
  • the active product is introduced inside the pocket by injection through the valve;
  • the bag is purged;
  • and another amount of the same propellant is introduced into the pocket by injection through the valve.

L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence aux dessins ci-annexés, mais quine sont nullement limitatifs.The invention consists, apart from the arrangements set out above, of a certain number of other arrangements which will be more explicitly discussed below in connection with embodiments described with reference to the attached drawings, but which are in no way limiting.

Les figures 1a à 1e, de ces dessins, illustrent schématiquement des étapes d'un premier procédé de remplissage et de fabrication d'un dispositif de distribution de produit actif sous pression, selon l'invention.Figures 1 a to 1 e of these drawings schematically illustrate steps of a first method of filling and manufacturing a device for dispensing active product under pressure, according to the invention.

Les figures 2a à 2e illustrent une deuxième possibilité de remplissage et de fabrication.Figures 2 a to 2 e illustrate a second possibility of filling and manufacturing.

Les figures 3a à 3e illustrent une troisième possibilité de remplissage et de fabrication du dispositif.Figures 3 a to 3 e illustrate a third possibility of filling and manufacturing the device.

Les figures 4a à 4e illustrent une quatrième possibilité de remplissage et de fabrication.Figures 4 a to 4 e illustrate a fourth possibility of filling and manufacturing.

Les figures 5a à 5e illustrent une cinquième possibilité de remplissage et de fabrication.Figures 5 a to 5 e illustrate a fifth possibility of filling and manufacturing.

Les figures 6a à 6e illustrent une sixième possibilité de remplissage et de fabrication.Figures 6 a to 6 e illustrate a sixth possibility of filling and manufacturing.

La figure 7 est un graphe représentant le débit en grammes/ secondes, porté en ordonnée, fourni par un dispositif selon l'invention, en fonction du temps porté en abscisse, chaque point correspondant à une pulvérisation durant cinq secondes, cette pulvérisation étant effectuée à des intervalles de temps espacés.FIG. 7 is a graph representing the flow rate in grams / seconds, plotted on the ordinate, provided by a device according to the invention, as a function of the time plotted on the abscissa, each point corresponding to a spraying for five seconds, this spraying being carried out at spaced apart time intervals.

La figure 8 est un graphe illustrant la variation de pression dans la poche d'un dispositif selon l'invention, en fonction du temps porté en abscisse.Figure 8 is a graph illustrating the pressure variation in the pocket of a device according to the invention, as a function of the time plotted on the abscissa.

La figure 9 est un graphe comparatif du débit porté en ordonnée, en fonction du nombre de débits, porté en abscisse, avec un dispositif selon l'invention et avec un dispositif conforme à l'art antérieur.FIG. 9 is a comparative graph of the flow rate plotted on the ordinate, as a function of the number of flow rates, plotted on the abscissa, with a device according to the invention and with a device according to the prior art.

La figure 10 est un graphe comparatif illustrant la variation de la pression du produit, portée en ordonnée, en fonction du nombre de débits, porté en abscisse, dans un dispositif selon l'invention et dans un diapositif de l'état de la technique.FIG. 10 is a comparative graph illustrating the variation of the pressure of the product, plotted on the ordinate, as a function of the number of flow rates, plotted on the abscissa, in a device according to the invention and in a slide of the state of the art.

La figure 11, enfin, est un graphe donnant les variations de la masse volumique du produit distribué, portées en ordonnée, en fonction du taux de vidange porté en abacisse pour un dispositif de distribution conforme à l'art antérieur et pour un dispositif conforme à l'invention, dans des conditions particulières expliquées plus loin.FIG. 11, finally, is a graph giving the variations in the density of the product dispensed, plotted on the ordinate, as a function of the rate of emptying plotted in abacisse for a dispensing device according to the prior art and for a device according to the invention, under specific conditions explained below.

En se reportant aux dessins, en particulier à la figure 1e, on peut voir un dispositif 1 pour distribuer sous pression un produit actif 2, par exemple un produit moussant tel que mousse à raser, mousse démaquillante, mousse capillaire, ou un produit pulvérisé (spray) tel qu'un déodorant.Referring to the drawings, in particular in FIG. 1 e , one can see a device 1 for dispensing under pressure an active product 2, for example a foaming product such as shaving foam, make-up removing foam, hair foam, or a sprayed product. (spray) such as a deodorant.

Le dispositif 1 comprend un récipient 3 classique, en forme de bidon, réalisé en aluminium ou en fer blanc, ou en matière plastique. En variante, ce récipient 3 pourrait être réalisé en verre.The device 1 comprises a conventional container 3, in the form of a can, made of aluminum or tinplate, or of plastic. As a variant, this container 3 could be made of glass.

Le récipient 3 est muni, en partie haute, d'une ouverture 4 délimitée par un cordon périphérique 5 à section transveraale circulaire. Dans le cas où le récipient 3 est en métal, ce cordon 5 peut être formé par le bord roulé de l'ouverture 4.The container 3 is provided, in the upper part, with an opening 4 delimited by a peripheral cord 5 with circular cross section. In the case where the container 3 is made of metal, this cord 5 can be formed by the rolled edge of the opening 4.

Le récipient 3 comporte dans sa paroi, de préférence dans la paroi de fond 6, un orifice de remplissage 7, fermé par un bouchon de remplissage 8 constitué par exemple par un tampon en matière élastomère.The container 3 has in its wall, preferably in the bottom wall 6, a filling orifice 7, closed by a filling plug 8 constituted for example by a pad of elastomeric material.

Une poche souple 9 est disposée à l'intérieur du récipient 3, cette poche comportant en partie haute une ouverture limitée par un bord qui est appliqué, de manière étanche, contre le cordon périphérique 5 délimitant l'ouverture 4 du récipient 3. Ainsi, la partie 10 située à l'intérieur du récipient 3 et à l'extérieur de la poche 9 est fermée de manière étanche.A flexible pocket 9 is disposed inside the container 3, this pocket comprising in the upper part an opening limited by an edge which is applied, in a sealed manner, against the peripheral bead 5 delimiting the opening 4 of the container 3. Thus, the part 10 located inside the container 3 and outside the pocket 9 is closed in a sealed manner.

Une valve de distribution classique 11 est fixée de manière étanche, par sertissage de la bordure d'une coupelle 12 sur le cordon périphérique 5. Cette valve 11 comporte une tige axiale 13 destinée à être enfoncée par l'utilisateur pour provoquer l'ouverture de ladite valve et la distribution du produit. Le bord de l'ouverture de la poche 9 est pris en sandwich entre le cordon 5 et la bordure de la coupelle 12.A conventional dispensing valve 11 is fixed in leaktight manner, by crimping the edge of a cup 12 on the peripheral bead 5. This valve 11 comprises an axial rod 13 intended to be pushed in by the user to cause the opening of said valve and the distribution of the product. The edge of the opening of the pocket 9 is sandwiched between the cord 5 and the edge of the cup 12.

Le dispositif 1, en vue de son utilisation, est équipé d'une tête de distribution (non représentée) qui vient recouvrir l'ouverture 4 et la valve de distribution 11. Cette tête de distribution comporte un poussoir sur lequel peut agir l'utilisateur pour enfoncer la tige 13.The device 1, with a view to its use, is equipped with a dispensing head (not shown) which covers the opening 4 and the dispensing valve 11. This dispensing head comprises a pusher on which the user can act to push in the rod 13.

Selon l'invention, le produit actif 2 à distribuer est situé à l'intérieur de la poche souple 9 et la valve 11 est dépourvue de tube plongeur.According to the invention, the active product 2 to be dispensed is located inside the flexible bag 9 and the valve 11 is devoid of dip tube.

Une certaine quantité d'un moyen propulseur 14 est introduite dans la partie 10 du récipient 3, située autour de la poche souple 9. Ce moyen propulseur 14 est constitué par un équilibre liquide/vapeur propre à maintenir une pression suffisante (de l'ordre de 3 bars) correspondant à la pression de vapeur, à la température considérée, du liquide utilisé. L'introduction du moyen propulseur 14 dans la partie 10 peut être effectuée à l'aide d'une aiguille hypodermique A enfoncée dans le bouchon 8. Lors du retrait de l'aiguille A, le bouchon 8 continue à assurer l'étanchéité.A certain amount of a propellant means 14 is introduced into the part 10 of the container 3, located around the flexible bag 9. This propellant means 14 is constituted by a liquid / vapor balance suitable for maintaining a sufficient pressure (of the order 3 bars) corresponding to the vapor pressure, at the temperature considered, of the liquid used. The introduction of the propellant means 14 into the part 10 can be carried out using a hypodermic needle A inserted in the plug 8. During the withdrawal of the needle A, the plug 8 continues to seal.

La poche souple 9 est formée par une membrane suffisamment perméable pour permettre le passage du moyen propulseur, sous forme gazeuse, à travers ladite membrane afin d'équilibrer la pression du moyen propulseur entre l'intérieur de la poche 9 et la partie extérieure 10. Bien entendu, la membrane de la poche 9 est imperméable à l'égard du produit actif 2 qui reste confiné à l'intérieur de cette poche.The flexible bag 9 is formed by a membrane which is sufficiently permeable to allow the propellant means to pass, in gaseous form, through said membrane in order to balance the pressure of the propellant means between the interior of the bag 9 and the external part 10. Of course, the membrane of the pocket 9 is impermeable with respect to the active product 2 which remains confined inside this pocket.

L'introduction du produit actif dans la poche 9 peut se réaliser à travers la valve 11. En outre, une certaine quantité du même moyen propulseur est introduite, également par la valve 11, dans la poche 9, notamment pour expanser le produit à distribuer.The introduction of the active product into the bag 9 can be carried out through the valve 11. In addition, a certain amount of the same propellant means is introduced, also through the valve 11, into the bag 9, in particular for expanding the product to be dispensed .

Il est à noter que la poche souple 9 peut être fixée sur le corps de valve 11, ou bien sur le corps du récipient 3, ou bien encore coincée entre le cordon périphérique 5 et la coupelle 12 comme décrit précédemment.It should be noted that the flexible bag 9 can be fixed on the valve body 11, or on the body of the container 3, or else wedged between the peripheral cord 5 and the cup 12 as described above.

La poche 9 peut être réalisée en l'un des matériaux appartenant au groupe : polyéthylène, polypropylène, polyéthylène/téréphtalate.The pocket 9 can be made of one of the materials belonging to the group: polyethylene, polypropylene, polyethylene / terephthalate.

Selon une autre possibilité, la poche est constituée par une association de films de polyoléfines et/ou de polyesters.According to another possibility, the pocket is formed by a combination of polyolefin films and / or polyesters.

L'épaisseur de la membrane constituant la poche 9 peut être comprise entre 0,2 et 0,6 mm, selon la nature du matériau utilisé pour constituer cette membrane.The thickness of the membrane constituting the pocket 9 can be between 0.2 and 0.6 mm, depending on the nature of the material used to form this membrane.

La perméabilité de la poche (membrane) à l'oxygène est avantageusement comprise entre 150 cm3/m2/24 heures et 400 cm3/m2/24 heures.The permeability of the pocket (membrane) to oxygen is advantageously between 150 cm3 / m2 / 24 hours and 400 cm3 / m2 / 24 hours.

Cette poche 9 qui présente une certaine perméabilité permet au moyen propulseur liquéfié qui se trouve dans la partie 10 du récipient 3 d'assurer la réalimentation en phase gazeuse du produit actif 2 contenu dans la poche 9 pour qu'il y ait toujours sursaturation en propulseur dans cette poche 9.This pocket 9 which has a certain permeability allows the liquefied propellant means which is located in the part 10 of the container 3 to ensure the gas phase replenishment of the active product 2 contained in the pocket 9 so that there is always supersaturation in propellant in this pocket 9.

La perméabilité de la poche permet d'obtenir une constance du débit de produit actif et de la pression dans la poche 9 pendant l'utilisation, du début jusqu'à la fin.The permeability of the bag makes it possible to obtain a constancy of the flow rate of active product and of the pressure in the bag 9 during use, from the start to the end.

Les figures 7 et suivantes sont des graphes illustrant des résultats obtenus avec un dispositif conforme à l'invention, au cours d'essais réalisés avec un produit moussant. Certains de ces graphes permettent de comparer les résultats selon l'invention aux résultats obtenus avec un dispositif de l'art antérieur.Figures 7 and following are graphs illustrating results obtained with a device according to the invention, during tests carried out with a foaming product. Some of these graphs make it possible to compare the results according to the invention with the results obtained with a device of the prior art.

Sur la figure 7, on peut voir la variation du débit en grammes/secondes, porté en ordonnée, d'un dispositif conforme à l'invention contenant une mousse corporelle, en fonction du temps porté en abscisse. Il est à noter que l'échelle des abscisses n'est pas linéaire.In FIG. 7, one can see the variation of the flow rate in grams / seconds, plotted on the ordinate, of a device according to the invention containing a body foam, as a function of the time plotted on the abscissa. It should be noted that the abscissa scale is not linear.

Les essais ont consisté, à l'aide d'un dispositif selon l'invention rempli de mousse corporelle dans la poche 9, à appuyer pendant 5 s. sur la tige 13 de la valve 11 à des moments espacés dans le temps comme représenté sur l'axe des abscisses, c'est-à-dire à l'instant 0, au bout d'une demi-heure, une heure, d'une heure et demie, de deux heures, de trois heures etc.The tests consisted, using a device according to the invention filled with body foam in the pocket 9, to be pressed for 5 s. on the stem 13 of the valve 11 at times spaced in time as shown on the abscissa axis, that is to say at time 0, after half an hour, one hour, d 'an hour and a half, two hours, three hours etc.

Le produit délivré par le dispositif est recueilli et pesé. Le débit en grammes/secondes est obtenu en divisant la masse recueillie par le temps d'expulsion.The product delivered by the device is collected and weighed. The flow rate in grams / seconds is obtained by dividing the mass collected by the expulsion time.

Il apparaît, d'après le graphe, que ce débit se maintient à une valeur sensiblement constante de l'ordre de 1,7 g/s même après 78 heures.It appears from the graph that this flow rate remains at a substantially constant value of the order of 1.7 g / s even after 78 hours.

Le graphe de la figure 8 illustre les variations de la pression en bars, portée en abscisse, à l'intérieur de la poche 9, pour le dispositif de l'invention ayant servi aux essais résumés par le graphe de la figure 7.The graph in FIG. 8 illustrates the variations in pressure in bars, plotted on the abscissa, inside the pocket 9, for the device of the invention which was used for the tests summarized by the graph in FIG. 7.

Il apparaît que la pression reste relativement constante. Au début de l'utilisation, cette pression se situe à environ 3,4 bars et, après 78 heures, elle est encore de l'ordre de 3 bars.It appears that the pressure remains relatively constant. At the start of use, this pressure is approximately 3.4 bars and, after 78 hours, it is still around 3 bars.

Le graphe de la figure 9 illustre des résultats d'essais comparatifs entre un dispositif conforme à l'invention (résultats de mesure portés sous forme de carrés blancs) dont la poche 9, présentant une certaine perméabilité, était réalisée en PVC (polychlorure de vinyle), et un dispositif conforme à l'état de la technique dans lequel la poche souple était réalisée en matière imperméable (feuille d'aluminium), le produit actif étant situé à l'intérieur de la poche ; les points de mesure pour le dispositif de l'état de la technique sont représentés par des carrés noirs sur la figure 9.The graph in FIG. 9 illustrates the results of comparative tests between a device in accordance with the invention (measurement results carried in the form of white squares) whose pocket 9, having a certain permeability, was made of PVC (polyvinyl chloride) ), and a device according to the state of the art in which the flexible pouch was made of impermeable material (aluminum foil), the active product being located inside the pouch; the measurement points for the device of the state of the art are represented by black squares in FIG. 9.

En ordonnée, on a porté le débit en g/s. Chaque point de mesure correspond à une pulvérisation pendant cinq secondes, les pulvérisations successives étant espacées de 30 minutes. Le nombre de pulvériaations ou de débits est porté en abscisse.On the ordinate, the flow was plotted in g / s. Each measuring point corresponds to a spray for five seconds, successive sprays being spaced 30 minutes apart. The number of sprays or flows is plotted on the abscissa.

Il apparaît clairement que le débit d'un dispositif conforme à l'invention varie beaucoup moins fortement que le débit d'un dispositif selon l'art antérieur.It is clear that the flow rate of a device according to the invention varies much less than the flow rate of a device according to the prior art.

La courbe du débit pour le dispositif de l'invention est située au-dessous de la courbe selon l'état de la technique pour les cinq premières pulvérisations, puis se trouve au-dessus de cette autre courbe à partir de la sixième pulvérisation. La chute de débit selon l'invention (d'environ 1,8 g/s pour la première pulvérisation à environ 1,5 g/s pour la dixième pulvérisation) est beaucoup plus faible quand le nombre de pulvérisations augmente, que dans le cas de l'état de la technique (d'environ 1,9 g/s pour la première pulvérisation à environ 0,8 g/s pour la dixième pulvérisation).The flow curve for the device of the invention is located below the curve according to the state of the art for the first five sprays and then sits above this other curve from the sixth spray. The drop in flow rate according to the invention (from approximately 1.8 g / s for the first spray to approximately 1.5 g / s for the tenth spray) is much smaller when the number of sprays increases, than in the case state of the art (from about 1.9 g / s for the first spray to about 0.8 g / s for the tenth spray).

La figure 10 est un graphe comparatif du dispositif selon l'invention utilisé pour les essais de la figure 9 avec un dispositif selon l'état de la technique, donnant l'évolution de la pression en bars portée en ordonnée dans le volume contenant le produit actif, en fonction du nombre de débits.FIG. 10 is a comparative graph of the device according to the invention used for the tests of FIG. 9 with a device according to the state of the art, giving the evolution of the pressure in bars plotted on the ordinate in the volume containing the product active, depending on the number of debits.

Il apparaît, là encore, que le graphe du dispositif de l'invention, correspondant aux points représentés par des carrés blancs, se rapproche plus de la constance (variation limitée entre 4 bars et environ 3,4 bars) que le graphe du dispositif de l'état de la technique représenté par des carrés noirs (variation entre environ 4,6 bars et environ 3 bars).It again appears that the graph of the device of the invention, corresponding to the points represented by white squares, is closer to constancy (limited variation between 4 bars and around 3.4 bars) than the graph of the device of the state of the art represented by black squares (variation between approximately 4.6 bars and approximately 3 bars).

Le graphe de la figure 11 résume un autre type d'essais comparatifs effectués entre un dispositif selon l'invention (points de mesure représentés par des carrés blancs) et un dispositif conforme à l'état de la technique (carrés noirs).The graph in FIG. 11 summarizes another type of comparative test carried out between a device according to the invention (measurement points represented by white squares) and a device conforming to the state of the art (black squares).

Pour ces essais, le volume contenant le produit actif (destiné à mousser) n'a pas été rempli, lors de la fabrication, de moyen propulseur. Autrement dit, dans le cas du dispositif conforme à l'invention, pour lequel le produit actif se trouve dans la poche 9, il n'y a pas eu injection de moyen propulseur dans cette poche 9. Pour le dispositif conforme à l'état de la technique, dans lequel le produit actif se trouve à l'intérieur de la poche souple, il n'y a pas eu d'injection de moyen propulseur dans cette poche.For these tests, the volume containing the active product (intended to foam) was not filled, during manufacture, with propellant. In other words, in the case of the device according to the invention, for which the active product is in the pocket 9, there has been no injection of propellant into this pocket 9. For the device according to the state of the technique, in which the active product is inside the flexible pouch, there has been no of propellant injection into this pocket.

Les mesures dont les résultats sont reportés sur la figure 11, ont été effectuées une semaine après la fabrication du dispositif, c'est-à-dire qu'il y a eu stockage sans utilisation de ce dispositif pendant la semaine en question.The measurements, the results of which are shown in FIG. 11, were carried out one week after the device was manufactured, that is to say that there was storage without using this device during the week in question.

A chaque essai, deux mesures de la masse volumique sont effectuées ; l'une au début de la distribution, l'autre après expansion de la mousse, c'est-à-dire cinq minutes après la sortie de la mousse.At each test, two density measurements are made; one at the start of dispensing, the other after expansion of the foam, that is to say five minutes after the foam has come out.

Il apparaît que la masse volumique du produit délivré par un dispositif selon l'état de la technique, au bout d'une semaine de stockage, reste constante en fonction du taux de vidange de ce dispositif. Cette masse volumique est en outre relativement élevée et correspond à celle du produit actif non expansé.It appears that the density of the product delivered by a device according to the state of the art, after one week of storage, remains constant as a function of the rate of emptying of this device. This density is also relatively high and corresponds to that of the unexpanded active product.

Selon l'invention, d'une manière surprenante, on obtient une mousse expansée bien qu'aucun moyen propulseur n'ait été introduit dans le volume contenant le produit actif. En outre, la masse volumique reste sensiblement constante au cours de la vidange.According to the invention, surprisingly, an expanded foam is obtained although no propellant means has been introduced into the volume containing the active product. In addition, the density remains substantially constant during the emptying.

Avec un dispositif conforme à l'invention, après une semaine de stockage, il y a donc eu une diffusion suffisante du gaz propulseur du volume 10 vers la poche 9 contenant le produit actif.With a device according to the invention, after one week of storage, there has therefore been sufficient diffusion of the propellant gas from volume 10 towards the bag 9 containing the active product.

Par contre, selon l'état de la technique, la poche souple étant imperméable, le moyen propulseur contenu dans cette poche n'a pu diffuser dans le produit actif.On the other hand, according to the state of the art, the flexible bag being waterproof, the propellant means contained in this bag could not diffuse into the active product.

La fabrication et plus particulièrement le remplissage d'un dispositif de distribution conforme à l'invention peuvent être réalisés selon divers procédés qui vont être décrits ci-après avec référence aux figures 1a-1e et suivantes, jusqu'aux figures 6a-6e.The manufacture and more particularly the filling of a dispensing device in accordance with the invention can be carried out according to various methods which will be described below with reference in Figures 1 a -1 e and following, to Figures 6 a -6 e .

Selon une première possibilité (figures 1a-1e), comme illustré sur la figure 1a, après avoir introduit la poche 9 dans le récipient 3, on remplit cette poche avec la quantité prévue de produit actif 2 à distribuer (figure 1a).According to a first possibility (FIGS. 1 a -1 e ), as illustrated in FIG. 1 a , after having introduced the bag 9 into the container 3, this bag is filled with the expected quantity of active product 2 to be distributed (FIG. 1 a ).

On place ensuite la valve 11 sur l'ouverture de la poche 9 et du récipient 3 et on sertit la coupelle 12 sur le bord 5 de l'ouverture du récipient, en emprisonnant de manière étanche le bord supérieur de la poche 9 entre le rebord 5 et la partie de la coupelle appliquée contre ce rebord. Cette étape est illustrée par la figure 1b.The valve 11 is then placed over the opening of the pocket 9 and of the container 3 and the cup 12 is crimped onto the edge 5 of the opening of the container, sealingly sealing the upper edge of the pocket 9 between the rim 5 and the part of the cup applied against this rim. This step is illustrated in Figure 1b .

On introduit une quantité de moyen propulseur 14 à l'intérieur de la poche 9 par injection au travers de la valve 11, comme illustré sur la figure 1c.A quantity of propellant 14 is introduced inside the pocket 9 by injection through the valve 11, as illustrated in FIG. 1 c .

A ce stade, on peut, le cas échéant, agiter le dispositif pour favoriser le mélange du moyen propulseur et du produit actif.At this stage, it is possible, if necessary, to agitate the device to favor the mixing of the propellant means and of the active product.

On injecte ensuite une autre quantité du même moyen propulseur 14 dans la partie 10 du volume intérieur du récipient 3 située à l'extérieur de la poche 9, par l'orifice 7. L'injection peut s'effectuer à l'aide d'une aiguille hypodermique A enfoncée dans le bouchon 8. Cette étape est illustrée sur la figure 1d.Another quantity of the same propellant means 14 is then injected into the part 10 of the interior volume of the container 3 situated outside the pocket 9, through the orifice 7. The injection can be carried out using a hypodermic needle A inserted in the plug 8. This step is illustrated in FIG. 1 d .

On purge ensuite la poche 9 en appuyant quelques secondes sur la tige 13 de la valve 11.The bag 9 is then purged by pressing the rod 13 of the valve 11 for a few seconds.

Le récipient 1, représenté sur la figure 1e, est alors prêt à fonctionner.The container 1, shown in Figure 1 e , is then ready to operate.

Selon une autre possibilité de remplissage, illustrée sur les figures 2a-2e, dans une première étape (figure 2a), on remplit la poche 9 avec la quantité prévue de produit actif 2, comme dans le cas de la figure 1e.According to another filling possibility, illustrated in FIGS. 2 a -2 e , in a first step (FIG. 2 a ), the bag 9 is filled with the expected quantity of active product 2, as in the case of Figure 1 e .

On place ensuite la valve 11 sur l'ouverture du récipient 3 et on fait le vide, à travers cette valve 11, dans la poche 9 pour éliminer l'air qui se trouve au-dessus du produit actif 2. Cette étape est illustrée sur la figure 2b.The valve 11 is then placed on the opening of the container 3 and a vacuum is made, through this valve 11, in the pocket 9 to eliminate the air which is above the active product 2. This step is illustrated on Figure 2 b .

On réalise ensuite le sertissage de la coupelle 12 sur le bord 5 du récipient et on introduit une quantité de moyen propulseur 14 à l'intérieur de la poche 9 par injection au travers de la valve 11. Cette étape correspond à la figure 2c.Then the crimping of the cup 12 is carried out on the edge 5 of the container and a quantity of propellant 14 is introduced into the pocket 9 by injection through the valve 11. This step corresponds to FIG. 2 c .

On introduit ensuite une quantité du même moyen propulseur 14 à travers l'orifice 7, dans le volume 10 situé à l'extérieur de la poche 9, comme illustré sur la figure 2d.A quantity of the same propellant means 14 is then introduced through the orifice 7, into the volume 10 situated outside the pocket 9, as illustrated in FIG. 2 d .

On purge ensuite la poche 9 en appuyant une ou deux secondes sur la valve 11 comme illustré sur la figure 2e et le dispositif 1 est alors prêt à fonctionner.The bag 9 is then purged by pressing one or two seconds on the valve 11 as illustrated in FIG. 2 e and the device 1 is then ready to operate.

Les figures 3a-3e illustrent une troisième possibilité de remplissage.Figures 3 a -3 e illustrate a third possibility of filling.

Les figures 3a, 3b correspondent à des étapes identiques à celles des figures 1a, 1b et leur description ne sera pas reprise.Figures 3 a, 3 b correspond to steps identical to those of Figures 1a, 1b and their description will be omitted.

L'étape suivante de la figure 3c correspond à l'introduction d'une quantité de moyen propulseur 14 à l'extérieur de la poche 9 dans le volume 10, cette introduction s'effectuant par l'orifice 7.Step s uivante of Figure 3c corresponds to the introduction of a quantity of propellant means 14 to the outside of the bag 9 in the volume 10, this introduction being carried by the orifice 7.

On effectue ensuite la purge de la poche 9 en appuyant sur la valve 11 jusqu'à apparition du produit actif. Cette étape correspond à la figure 3d.The bag 9 is then purged by pressing the valve 11 until the active product appears. This step corresponds to Figure 3 d .

Enfin, on introduit une quantité du même moyen propulseur 14 à l'intérieur de la poche 9 par injection au travers de la valve 11 pour aboutir au dispositif 1 de la figure 3e qui est prêt à fonctionner.Finally, a quantity of the same propellant means 14 is introduced into the pocket 9 by injection through the valve 11 to reach the device 1 of FIG. 3 e which is ready to operate.

Selon une quatrième possibilité, illustrée sur les figures 4a-4e, dans une première étape, après avoir introduit la poche 9 dans le récipient 3, on pose la valve 11 sur l'ouverture du récipient et de la poche et on sertit la coupelle 12 de la valve sur le rebord 5.According to a fourth possibility, illustrated in FIGS. 4 a -4 e , in a first step, after having introduced the bag 9 into the container 3, the valve 11 is placed on the opening of the container and of the bag and the cup 12 of the valve on the flange 5.

On introduit ensuite une certaine quantité de moyen propulseur 14 dans le récipient 3 à travers l'orifice 7, dans le volume 10. La pression exercée par le propulseur comprime la poche 9 comme illustré schématiquement sur la figure 4b.Then a certain amount of propellant 14 is introduced into the container 3 through the orifice 7, in the volume 10. The pressure exerted by the propellant compresses the pocket 9 as illustrated diagrammatically in FIG. 4 b .

On effectue ensuite une purge complète de l'air enfermé par la poche 9 en appuyant sur la valve 11. Les parois de la poche viennent s'appliquer l'une contre l'autre sous l'effet de la pression du moyen propulseur contenu dans le volume 10 et l'air est chassé vers l'extérieur. Cette étape est schématisée par la figure 4c.A complete purge of the air enclosed by the bag 9 is then carried out by pressing on the valve 11. The walls of the bag are applied against each other under the effect of the pressure of the propellant means contained in volume 10 and the air is expelled to the outside. This step is shown schematically in Figure 4c .

On introduit ensuite le produit actif 2 à l'intérieur de la poche 9 par injection au travers de la valve 11. L'état du dispositif à la fin de cette injection est représenté sur la figure 4d.The active product 2 is then introduced inside the pocket 9 by injection through the valve 11. The state of the device at the end of this injection is shown in FIG. 4 d .

Enfin, on introduit une quantité de moyen propulseur 14 dans la poche 9 par injection au travers de la valve 11 pour aboutir au dispositif prêt à fonctionner illustré sur la figure 4e.Finally, a quantity of propellant 14 is introduced into the pocket 9 by injection through the valve 11 to end up with the device ready for operation illustrated in FIG. 4 e .

Les figures 5a-5e illustrent une cinquième possibilité de remplissage.Figures 5 a -5 e illustrate a fifth filling possibility.

Les étapes représentées sur les figures 5a et 5b sont identiques à celles des figures 4a et 4b et leur description ne sera pas reprise.The steps shown in Figures 5a and 5b are identical to those of Figures 4 and 4b and the description thereof will be omitted.

A l'étape suivante, illustrée par la figure 5c, on introduit le produit actif 2 dans la poche 9 par injection au travers de la valve 11.In the next step, illustrated by FIG. 5 c , the active product 2 is introduced into the bag 9 by injection through the valve 11.

Puis, on introduit une quantité de moyen propulseur 14 dans la poche 9 également par injection au travers de la valve 11 ; la figure 5d schématise le dispositif à la fin de cette injection.Then, a quantity of propellant 14 is introduced into the pocket 9 also by injection. through the valve 11; Figure 5 d shows schematically the device at the end of this injection.

On effectue ensuite la purge de la poche 9 en appuyant sur la valve 11 de aorte que le niveau du produit actif 2, expansé par le propulseur, se rapproche de la valve 11 comme illustré sur la figure 5e.The purge of the pocket 9 is then carried out by pressing on the valve 11 of the aorta that the level of the active product 2, expanded by the propellant, approaches the valve 11 as illustrated in FIG. 5 e .

Les figures 6a-6e illustrent une possibilité de remplissage d'un récipient 3a dépourvu de l'orifice de remplissage des figures précédentes.Figures 6 a -6 e illustrate a filling ability of a container 3 is free of the filling orifice of the preceding figures.

Une quantité de moyen propulseur 14 est introduite par l'ouverture supérieure 4a du récipient 3a, à froid, c'est-à-dire à une température suffisamment basse pour que le moyen propulseur reste à l'état liquide sous la pression atmosphérique. La poche 9 est ensuite introduite dans le récipient 3a puis la valve 11 est posée sur l'ouverture 4a et la coupelle 12 est sertie sur le bord 5a, comme illustré sur la figure 6b.A quantity of propellant 14 is introduced through the upper opening 4 a of the container 3 a , when cold, that is to say at a temperature low enough for the propellant to remain in the liquid state under atmospheric pressure . The pocket 9 is then introduced into the container 3 a, then the valve 11 is placed on the opening 4 a and the cup 12 is crimped on the edge 5 a , as illustrated in FIG. 6 b .

Le moyen propulseur 14 situé dans le volume 10 est alors emprisonné de manière étanche. Il n'est plus nécessaire de maintenir le récipient 3a à basse température.The propellant means 14 located in the volume 10 is then trapped in a sealed manner. It is no longer necessary to keep the container 3 a at low temperature.

Lors de l'étape suivante, illustrée sur la figure 6c, le produit actif 2 est introduit à l'intérieur de la poche 9 par injection au travers de la valve 11.During the next step, illustrated in FIG. 6 c , the active product 2 is introduced inside the bag 9 by injection through the valve 11.

On procède ensuite à la purge de la poche 9 en actionnant la valve 11, comme illustré sur la figure 6d.The bag 9 is then purged by actuating the valve 11, as illustrated in FIG. 6 d .

On injecte ensuite au travers de la valve 11 une quantité de moyen propulseur 14 à l'intérieur de la poche 9. Le dispositif 1a est prêt à fonctionner.A quantity of propellant 14 is then injected through the valve 11 inside the pocket 9. The device 1 a is ready to operate.

L'invention fournit un dispositif distributeur de produit sous pression qui peut être utilisé tête en haut et tête en bas et qui assure une bonne constance du débit, et des caractéristiques du produit délivré.The invention provides a device for dispensing pressurized product which can be used upside down and upside down and which ensures good constancy of the flow rate and of the characteristics of the product. delivered.

Claims (11)

  1. A device for the pressurized dispensing of a product, in particular a foaming product such as shaving cream, make-up remover, body cream, a product for the hair or a deodorant product, comprising a container provided in its upper portion with an opening whereon there is mounted a dispensing valve, and a flexible pouch made of a membrane that is impermeable to liquids but sufficiently permeable to gases to allow an equilibrium of the gas pressure of a propellant means (14) to be maintained between the space (10) outside the pouch situated in the container (3) and inside this pouch (9),
    this flexible pouch containing an active product to be dispensed which is not in its gaseous state, the flexible pouch being impermeable to this active product, and a propellant means, while the space (10) of the container (3) situated round the pouch (9) also contains a propellant means,
    characterized in that
    - the valve (11) has no dip tube,
    - the propellant means (14) situated in the space (10) of the container (3) is the same as that introduced into the pouch (9) and is constituted by a liquid/vapour equilibrium capable of maintaining a sufficient pressure, corresponding to the vapour pressure at the temperature in question, the propellant means in its gaseous form passing from the said space (10) towards the inside of the said pouch (9).
  2. A device according to claim 1, characterized in that the vapour pressure at the existing temperature of the liquid/vapour equilibrium of the propellant means (14) in the container (10) is of the order of 3 bar.
  3. A device according to claim 1 or 2, characterized in that the pouch (9) is made of one of the materials belonging to the group of polyethylene, polypropylene, polyethylene/terephthalate.
  4. A device according to claim 1 or 2, characterized in that the pouch (9) is formed by a combination of polyolefin and/or polyester films.
  5. A device according to any one of claims 1 to 4, characterized in that the thickness of the pouch (9) is comprised between 0.2 and 0.6 mm according to the nature of the material used for constituting the pouch.
  6. A device according to any one of the preceding claims, characterized in that the container (3) has in its wall, in particular in its bottom (6), a filling opening (7) closed by a filling stopper (8).
  7. A method for filling a device according to claim 1, characterized in that :
    - the pouch (9) is filled with the active product (2) to be dispensed, which is not in its gaseous state;
    - the valve (11) is positioned on the opening of the container (3) and then it is crimped on the said container (3);
    - a quantity of the propellant means (14) is introduced inside the pouch (9) by injection through the valve (11);
    - stirring is effected, if required;
    - another quantity of the same propellant means (14) is injected through an opening (7) provided in the wall of the container (3) into the part of the space (10) inside the container (3) situated outside the pouch (9), so as to obtain a liquid/vapour equilibrium of this propellant means (14) in this space (10);
    - the pouch is vented by pressing for a few seconds on the valve (11).
  8. A method for filling a device according to claim 1, characterized in that:
    - the pouch (9) is filled with the active product (2) which is not in its gaseous state;
    - the valve (11) is positioned on the opening (4) of the container (3);
    - a vacuum is created to eliminate the air being situated above the active product (2) in the pouch (9);
    - the valve (11) is crimped on the edge of the opening (4) of the container (3);
    - a quantity of the propellant means (14) is introduced into the inside of the pouch (9) by injection through the valve (11);
    - another quantity of the same propellant means (14) is injected outside the pouch (9) into the container (3) through an opening (7) placed in the wall of this container (3), in particular at its lower portion, so as to obtain a liquid/vapour equilibrium of this propellant means (14) in this space (10);
    - the pouch is vented by pressing for one or two seconds on the valve (11).
  9. A method for filling a device according to claim 1, characterized in that:
    - the valve (11) is positioned on the container (3);
    - the valve (11) is crimped on the container (3);
    - a quantity of the propellant means (14) is introduced outside the pouch (9) into the container (3), through an opening (7) provided in the wall of the container (3), in particular at its lower portion, so as to obtain a liquid/vapour equilibrium of this propellant means (14) in this space (10);
    - the pouch (9) is completely vented;
    - the active product (2) which is not in its gaseous state is introduced inside the pouch (9) by injection through the valve (11);
    - another quantity of the same propellant means (14) is introduced by injection through the valve (11).
  10. A method for filling a device according to claim 1, characterized in that:
    - the valve (11) is positioned;
    - the valve (11) is crimped on the container (3);
    - a quantity of the propellant means (14) is introduced outside the pouch (9), through an opening (7) situated in the wall of the container (3), so as to obtain a liquid/vapour equilibrium of the propellant means (14) in this space (10);
    - the active product (2) to be dispensed, which is not in its gaseous state, is introduced into the pouch (9) by injection through the valve (11);
    - another quantity of the same propellant means (14) is introduced into the pouch by injection through the valve (11);
    - stirring is effected, if required;
    - the pouch (9) is vented.
  11. A method for filling a device according to claim 1, comprising a container without any filling opening in its wall, characterized in that:
    - a quantity of the propellant means (14) is introduced in its cold state into the container (3a) so as to obtain a liquid/vapour equilibrium of the propellant means (14) in this space;
    - the pouch (9) is introduced into the container (3a) and the valve (11) is positioned on the opening (4a) of the container (3a);
    - the valve (11) is crimped on the edge of the opening (4a) of the container (3a);
    - the pouch (9) is vented;
    - and another quantity of the same propellant means (14) is introduced into the inside of the pouch (9) by injection through the valve (11).
EP19910403465 1990-12-31 1991-12-19 Device for dispensing, under pressure, a product, especially a foaming product, and methods of filling a container for such a device Expired - Lifetime EP0494004B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9016539A FR2671055A1 (en) 1990-12-31 1990-12-31 DEVICE FOR DISPENSING A PRODUCT UNDER PRESSURE, IN PARTICULAR A FOAMING PRODUCT, AND METHODS FOR FILLING A CONTAINER FOR SUCH A DEVICE.
FR9016539 1990-12-31

Publications (2)

Publication Number Publication Date
EP0494004A1 EP0494004A1 (en) 1992-07-08
EP0494004B1 true EP0494004B1 (en) 1995-07-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910403465 Expired - Lifetime EP0494004B1 (en) 1990-12-31 1991-12-19 Device for dispensing, under pressure, a product, especially a foaming product, and methods of filling a container for such a device

Country Status (4)

Country Link
EP (1) EP0494004B1 (en)
JP (1) JP2995511B2 (en)
DE (1) DE69111042T2 (en)
FR (1) FR2671055A1 (en)

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US9701430B2 (en) 2011-05-16 2017-07-11 The Procter & Gamble Company Components for aerosol dispenser

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FR2714595B1 (en) * 1993-12-30 1996-02-02 Oreal Water in oil emulsion containing retinol, its use and packaging.
DE59500858D1 (en) * 1995-05-18 1997-11-27 Rapid Spray Gmbh & Co Kg Method and device for filling an aerosol can
JP3898291B2 (en) * 1997-07-15 2007-03-28 株式会社ダイゾー Aerosol products
DE69838065T2 (en) * 1998-03-03 2008-03-13 Osaka Shipbuilding Co., Ltd. AEROSOL PRODUCTS AND METHOD FOR THE PRODUCTION THEREOF
FR2804665B1 (en) 2000-02-07 2002-06-14 Oreal POCKET AEROSOL WITH IMPROVED SEALING
JP2002308358A (en) * 2001-04-09 2002-10-23 Daizo:Kk Dual aerosol product
FR2829747B1 (en) * 2001-09-19 2003-12-05 Ile Riviere Silvente Et Associ PROCESS FOR THE PACKAGING OF A PASTY PRODUCT AND ITS DISTRIBUTION IN THE FILLED STATE
FR2829748B1 (en) * 2001-09-19 2003-12-12 Nestle Sa PROCESS FOR THE PACKAGING OF A PASTY PRODUCT AND ITS DISTRIBUTION IN THE FILLED STATE
JP2002240873A (en) * 2001-12-25 2002-08-28 Hoyu Co Ltd Aerosol container and two-agent discharge container
GB0212047D0 (en) 2002-05-24 2002-07-03 Btg Int Ltd Generation of therapeutic microfoam
FR2841159B1 (en) 2002-06-20 2007-04-06 Oreal DEVICE FOR CONDITIONING AND SPRAYING A PRODUCT
DE102007058183A1 (en) * 2007-12-04 2009-06-10 Deutsche Aerosol Gmbh Active substance e.g. liquid, filling manufacturer-pressure container, has unfilled bag serving for spatial accommodation of active substance that is fillable over releasing valve, where pressure is exerted on external surface of bag

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FR2233843A5 (en) * 1973-06-15 1975-01-10 Air Liquide Aerosol container with inner flexible envelope - uses two propulsive fluids, one soluble, the other insoluble in product
FR2281290A1 (en) * 1974-08-07 1976-03-05 Cebal Small rechargeable aerosol container - combining large-volume aerosol with small-volume aerosol
DE2912670A1 (en) * 1979-03-30 1980-10-09 Lechner Gmbh TWO-CHAMBER PRESSURE CAN FOR DISPENSING A FILLING MATERIAL

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US9701430B2 (en) 2011-05-16 2017-07-11 The Procter & Gamble Company Components for aerosol dispenser
US9950821B2 (en) 2011-05-16 2018-04-24 The Procter & Gamble Company Components for aerosol dispenser

Also Published As

Publication number Publication date
DE69111042T2 (en) 1996-04-11
EP0494004A1 (en) 1992-07-08
JPH05254579A (en) 1993-10-05
JP2995511B2 (en) 1999-12-27
FR2671055A1 (en) 1992-07-03
DE69111042D1 (en) 1995-08-10
FR2671055B1 (en) 1994-08-19

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