EP1606194B1 - Distribution device for fluid product - Google Patents

Distribution device for fluid product Download PDF

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Publication number
EP1606194B1
EP1606194B1 EP04719488A EP04719488A EP1606194B1 EP 1606194 B1 EP1606194 B1 EP 1606194B1 EP 04719488 A EP04719488 A EP 04719488A EP 04719488 A EP04719488 A EP 04719488A EP 1606194 B1 EP1606194 B1 EP 1606194B1
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EP
European Patent Office
Prior art keywords
synthetic material
reservoir
valve body
day
fluid product
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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EP04719488A
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German (de)
French (fr)
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EP1606194A2 (en
Inventor
Jacques Fontela
Jean-Marc Pardonge
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Aptar France SAS
Original Assignee
Valois SAS
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Publication of EP1606194A2 publication Critical patent/EP1606194A2/en
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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
    • B65D83/38—Details of the container body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action

Definitions

  • the present invention relates to a fluid dispenser device, and more particularly to an aerosol type device for dispensing a fluid product by means of a propellant gas.
  • the aerosol devices generally comprise a reservoir or can made of metal, in particular aluminum.
  • a valve which may be a metering valve, is fixed, usually crimped, on the neck of the reservoir by means of a ring or fixing cap, in this case a crimping ring.
  • the reservoir contains a fluid and a propellant, in particular liquefied, so that the contents of the reservoir is under pressure.
  • the expansion of the propellant gas expels the product through said valve.
  • Metal tanks, and more particularly aluminum have a number of disadvantages. On the one hand, it is difficult or impossible to achieve complex forms of reservoirs at reasonable prices. In addition, the use of metal may be considered undesirable from an ecological point of view. Machines for making and assembling such aluminum tanks are also complicated and expensive.
  • GB-A-1 007 493 from which the preamble of claim 1 is derived, describes an aerosol device comprising a thermoplastic nylon or Delrin reservoir entirely moldable.
  • This document shows in the single figure that an upper transverse wall of the tank supports a valve body to be assembled.
  • This valve body is made by molding from plastic material such as polyethylene. The valve body is assembled on the tank.
  • the present invention aims to provide a fluid dispensing device that does not reproduce the aforementioned drawbacks.
  • the purpose of the present invention is to provide such a device which guarantees the tightness and the resistance of the reservoir while limiting as much as possible the harmful interactions with the fluid product.
  • the present invention also aims to provide such a device that allows any desired forms for the tank.
  • the present invention also aims to provide such a device that is simple and inexpensive to manufacture and assemble.
  • the present invention also aims to provide such a device that limits the maximum use of metal, including aluminum.
  • the subject of the present invention is therefore a fluid dispensing device, comprising a reservoir, containing the fluid product and a propellant gas, and a valve, comprising a valve body and a valve sliding in said valve body between a position of rest and a position of distribution, said reservoir is made in one piece with said valve body, said reservoir and said valve body being rigid and being made of a high performance synthetic material resistant to the pressure of the propellant gas, said material having a low permeability to water and gas.
  • the reservoir is made by molding.
  • said synthetic material has high tensile and flexural modules and / or high impact resistance
  • said synthetic material has a low linear coefficient of expansion.
  • the temperature of the mold during molding of said synthetic material is less than 100 ° C.
  • said synthetic material has an oxygen permeability of less than 10 cm 3 / m 2 / day, preferably less than 1 cm 3 / m 2 / day, and a water permeability of less than 10 g / m 2 / day, preferably less than 1 g / m 2 / day, at a pressure of 1 bar for a thickness of 25 microns.
  • said synthetic material has tensile and flexural modules greater than 5,000 MPa, preferably greater than 10,000 MPa.
  • said synthetic material comprises LCP (Liquid Crystal Polymer).
  • said synthetic material comprises one or more of the following components: PEN (polyethylene naphthalate), POM (polyoxymethylene), PSU (polysulfone), PEEK (polyetherether cetone), PEK (polyether ketone), PAEK (polyarylether ketone), PPE (polyphenyl ether) PEI (polyetherimide), PA 4.6 (polyamide 4.6), PA FV (glass fiber polyamides), PPS (polyphenylene sulphide).
  • PEN polyethylene naphthalate
  • POM polyoxymethylene
  • PSU polysulfone
  • PEEK polyetherether cetone
  • PEK polyether ketone
  • PAEK polyarylether ketone
  • PPE polyphenyl ether
  • PEI polyetherimide
  • PA 4.6 polyamide 4.6
  • PA FV glass fiber polyamides
  • PPS polyphenylene sulphide
  • said fluid product is a pharmaceutical product.
  • said propellant gas comprises HFA-134a or HFA-227 gases, with or without alcohol.
  • the present invention applies to any type of fluid dispenser device in which a propellant gas is used to perform the dispensing.
  • the examples below include metering valves, that is to say valves dispensing a precise and reproducible dose at each actuation of the device, but it is understood that the present invention is not limited to this type of valve.
  • the device comprises a reservoir 1 containing the fluid product and a liquefied propellant gas.
  • fluid product is meant any liquid product, pasty, gaseous or powder that can be associated in any way with a propellant for expulsion.
  • a valve 10, having a valve body 11, is provided for dispensing the contents of the reservoir, said valve being able to be assembled on the reservoir 1 by means of a fixing ring or capsule 20, which in the example of FIG. Figure 2 is a crimpable capsule while in the example of Figures 1 and 3, it is a snap ring having specific latching means 21.
  • any type of ring or attachment capsule 20 may be associated with the present invention.
  • the bottom 2 of the reservoir can be sealed to the reservoir 1 by overinjection.
  • the bottom 2 and the superinjected material 3 are formed of the same material as the tank 1. The fixing and sealing must obviously withstand the pressure inside the tank 1.
  • FIG. 4 to 7 show different embodiments.
  • FIG. 4 like FIG. 1, shows a fastening piece 3 superimposed on radial ribs 6 and 7 respectively integral with the tank 1 and the bottom 2.
  • FIGS. 5 and 6 show two variants in which the fastening and sealing are ensured by the intimate bond, similar to a bond, obtained during the overinjection of the material 3.
  • Figure 7 shows a particularly strong attachment, in which the tank 1 has several windows 5 and the bottom 2 has a groove 8, or the like , the injected material 3 filling said windows 5 and said groove 8 for fixing and sealing.
  • the valve 10 comprises a valve body 11 in which a valve 12 slides in a sealed manner between a rest position, shown in the figures, and a dispensing position, in which the valve is pressed inside the valve body to allow the expulsion of the product.
  • the reservoir is made of a high-performance synthetic material.
  • This synthetic material must withstand the pressure of the propellant and must therefore have appropriate properties.
  • it preferably has a low permeability to water and gases, especially oxygen, high impact resistance, and high tensile and flexural modules, so that this material is particularly rigid.
  • the material stiffness characteristics thus make it possible to dispense with the use of metal in the production of the tank.
  • it is no longer necessary to provide a synthetic coating usually lining the metal tanks to avoid interference between the product in the tank and the metal surfaces of the tank.
  • this material also has a low coefficient of linear expansion, which further improves its ability to be used with pressure tanks.
  • the synthetic material has an oxygen permeability less than 10 cm 3 / m 2 / day, with reference to a pressure of 1 bar, a wall thickness of 25 ⁇ m, a temperature of 23 ° C and 0% relative humidity. Preferably, this permeability is even less than 1 cm 3 / m 2 / day.
  • the synthetic material advantageously has a water permeability of less than 10 g / m 2 / day, preferably less than 1 g / m 2 / day, with reference to a pressure of 1 bar, a wall thickness of 25. ⁇ m, a temperature of 38 ° C and at 90% relative humidity.
  • Table 1 shows that LCP (Liquid Crystal Polymer) has excellent permeability properties.
  • the tensile and flexural modules of the synthetic material are advantageously greater than 5,000 MPa, preferably greater than 10,000 MPa.
  • Table 2 shows a number of high performance synthetic materials whose properties are compared to aluminum.
  • LCP Liquid Crystal Polymer
  • Table 2 clearly shows that different synthetic materials can be used to achieve the present invention.
  • the LCP Liquid Crystal Polymer
  • it optimally fulfills the requirements for all required properties (permeability, rigidity, impact resistance). It also has a significant advantage over most other materials presented in this table, namely that the mold temperature during LCP molding is generally less than 100 ° C, while other materials require a mold temperature. above 150 ° C. This makes it possible to manufacture the tank at a lower cost, without having to use molds operating at very high temperatures, which are complicated and expensive to manufacture and use.
  • the other synthetic materials of Table 2 could also be used, alone or as a mixture, depending on the requirements of the fluid and / or the propellant.
  • PEN polyethylene naphthalate
  • the synthetic materials usually used for the manufacture of tanks or cans of fluid dispensing devices are not suitable for producing tanks of aerosol devices because of the pressure.
  • polyolefin, polypropylene, certain polyesters, polyacetal, polystyrene or certain polyamides have problems of resistance to pressure and / or insufficient mechanical properties and / or unacceptable permeabilities.
  • These materials are therefore not suitable for use in the context of tanks for fluid dispensing devices containing a propellant. Some of these materials also react adversely with solvents and / or propellants, so that they are not suitable for dispensing pharmaceuticals.
  • the reservoir 1 and the valve body 11 are made in one piece.
  • this assembly is made by molding from a high performance synthetic material as described above.
  • a high performance synthetic material as described above.
  • This particularly advantageous embodiment of a valve body and a monobloc tank fully participates in a goal sought by the invention which is to simplify the manufacture and assembly of the device and reduce its cost.
  • a particular use of the device of the present invention relates to the dispensing of pharmaceutical product.
  • the synthetic material must have satisfactory properties as regards the interaction between the synthetic material and the drug contained in the reservoir.
  • the LCP exhibits optimum characteristics, so that it is particularly suitable for use in the context of the present invention.
  • the preferred propellants are HFA-134a or HFA-227, with or without alcohol, which are not harmful to the environment.
  • the use of these propellants increases the pressure inside the tank compared to previous propellants (CFC gas), which are now prohibited for reasons related to the protection of the environment. Synthetic materials that could have been found satisfactory with CFC gases can no longer be used with HFA gases, especially HFA-134a, and the present invention solves this problem, particularly when the material used is LCP. .

Abstract

The invention relates to a distribution device for fluid product, comprising a reservoir (1), containing the fluid product and a propellant gas, a valve (10), with a valve body (11) and a throttle valve (12), sliding within said valve body (11), between a rest position and a distribution position. Said reservoir (1) is rigid and made from a high-performance synthetic material resistant to the pressure of the propellant gas, sad material having a low permeability to water and oxygen.

Description

La présente invention concerne un dispositif de distribution de produit fluide, et plus particulièrement un dispositif du type aérosol destiné à distribuer un produit fluide au moyen d'un gaz propulseur.The present invention relates to a fluid dispenser device, and more particularly to an aerosol type device for dispensing a fluid product by means of a propellant gas.

Les dispositifs aérosols comportent généralement un réservoir ou bidon réalisé en métal, notamment en aluminium. Une valve, qui peut être une valve doseuse, est fixée, généralement sertie, sur le col du réservoir au moyen d'une bague ou capsule de fixation, en l'occurrence une bague de sertissage. Le réservoir contient un produit fluide et un gaz propulseur, notamment liquéfié, de sorte que le contenu du réservoir est sous pression. Lorsque l'utilisateur actionne la valve, la détente du gaz propulseur provoque l'expulsion du produit à travers ladite valve. Les réservoirs en métal, et plus particulièrement en aluminium présentent un certain nombre d'inconvénients. D'une part, il est difficile voire impossible de réaliser des formes de réservoirs complexes à des prix raisonnables. De plus, l'utilisation de métal peut être considérée non souhaitable d'un point de vue écologique. Les machines pour fabriquer et assembler de tels réservoirs en aluminium sont également compliquées et coûteuses.The aerosol devices generally comprise a reservoir or can made of metal, in particular aluminum. A valve, which may be a metering valve, is fixed, usually crimped, on the neck of the reservoir by means of a ring or fixing cap, in this case a crimping ring. The reservoir contains a fluid and a propellant, in particular liquefied, so that the contents of the reservoir is under pressure. When the user actuates the valve, the expansion of the propellant gas expels the product through said valve. Metal tanks, and more particularly aluminum have a number of disadvantages. On the one hand, it is difficult or impossible to achieve complex forms of reservoirs at reasonable prices. In addition, the use of metal may be considered undesirable from an ecological point of view. Machines for making and assembling such aluminum tanks are also complicated and expensive.

Le document GB-A-1 007 493, duquel le préambule de la revendication 1 est issu, décrit un dispositif aérosol comprenant un réservoir thermoplastique en nylon ou Delrin entièrement réalisable par moulage. Ce document montre sur la figure unique qu'une paroi transversale supérieure du réservoir supporte un corps de valve à assembler. Ce corps de valve est réalisé par moulage à partir de matériau plastique tel que du polyéthylène. Le corps de valve est assemblé sur le réservoir.GB-A-1 007 493, from which the preamble of claim 1 is derived, describes an aerosol device comprising a thermoplastic nylon or Delrin reservoir entirely moldable. This document shows in the single figure that an upper transverse wall of the tank supports a valve body to be assembled. This valve body is made by molding from plastic material such as polyethylene. The valve body is assembled on the tank.

La présente invention a pour but de fournir un dispositif de distribution de produit fluide qui ne reproduit pas les inconvénients susmentionnés.The present invention aims to provide a fluid dispensing device that does not reproduce the aforementioned drawbacks.

Plus particulièrement, la présente invention a pour but de fournir un tel dispositif qui garantisse l'étanchéité et la résistance du réservoir tout en limitant au maximum les interactions néfastes avec le produit fluide.More particularly, the purpose of the present invention is to provide such a device which guarantees the tightness and the resistance of the reservoir while limiting as much as possible the harmful interactions with the fluid product.

La présente invention a aussi pour but de fournir un tel dispositif qui permette de réaliser des formes quelconques souhaitées pour le réservoir.The present invention also aims to provide such a device that allows any desired forms for the tank.

La présente invention a aussi pour but de fournir un tel dispositif qui soit simple et peu coûteux à fabriquer et à assembler.The present invention also aims to provide such a device that is simple and inexpensive to manufacture and assemble.

La présente invention a également pour but de fournir un tel dispositif qui limite au maximum l'utilisation de métal, notamment d'aluminium.The present invention also aims to provide such a device that limits the maximum use of metal, including aluminum.

La présente invention a donc pour objet un dispositif de distribution de produit fluide, comportant un réservoir, contenant le produit fluide et un gaz propulseur, et une valve, comportant un corps de valve et une soupape coulissant dans ledit corps de valve entre une position de repos et une position de distribution, ledit réservoir est réalisé d'une pièce monobloc avec ledit corps de valve, ledit réservoir et ledit corps de valve étant rigide et étant réalisé en un matériau synthétique hautes performances résistant à la pression du gaz propulseur, ledit matériau ayant une faible perméabilité à l'eau et aux gaz.The subject of the present invention is therefore a fluid dispensing device, comprising a reservoir, containing the fluid product and a propellant gas, and a valve, comprising a valve body and a valve sliding in said valve body between a position of rest and a position of distribution, said reservoir is made in one piece with said valve body, said reservoir and said valve body being rigid and being made of a high performance synthetic material resistant to the pressure of the propellant gas, said material having a low permeability to water and gas.

Avantageusement, le réservoir est réalisé par moulage.Advantageously, the reservoir is made by molding.

Avantageusement, ledit matériau synthétique présente des modules de traction et de flexion élevés et/ou une résistance élevée aux chocsAdvantageously, said synthetic material has high tensile and flexural modules and / or high impact resistance

Avantageusement, ledit matériau synthétique présente un faible coefficient linéaire de dilatation.Advantageously, said synthetic material has a low linear coefficient of expansion.

Avantageusement, la température du moule lors du moulage dudit matériau synthétique est inférieure à 100°C.Advantageously, the temperature of the mold during molding of said synthetic material is less than 100 ° C.

Avantageusement, ledit matériau synthétique a une perméabilité à l'oxygène inférieure à 10 cm3/m2/jour, de préférence inférieure à 1 cm3/m2/jour, et une perméabilité à l'eau inférieure à 10 g/m2/jour, de préférence inférieure à 1 g/m2/jour, à une pression de 1 bar pour une épaisseur de 25 µm.Advantageously, said synthetic material has an oxygen permeability of less than 10 cm 3 / m 2 / day, preferably less than 1 cm 3 / m 2 / day, and a water permeability of less than 10 g / m 2 / day, preferably less than 1 g / m 2 / day, at a pressure of 1 bar for a thickness of 25 microns.

Avantageusement, ledit matériau synthétique a des modules de traction et de flexion supérieurs à 5 000 Mpa, de préférence supérieurs à 10 000 Mpa.Advantageously, said synthetic material has tensile and flexural modules greater than 5,000 MPa, preferably greater than 10,000 MPa.

Avantageusement, ledit matériau synthétique comprend du LCP (Liquid Crystal Polymer).Advantageously, said synthetic material comprises LCP (Liquid Crystal Polymer).

Avantageusement, ledit matériau synthétique comprend un ou plusieurs des composants suivants : PEN (polyéthylène naphtalate), POM (polyoxyméthylène), PSU (polysulfone), PEEK (polyétheréther cetone), PEK (polyéther cetone), PAEK (polyaryléther cetone), PPE (polyphénylether), PEI (polyether imide), PA 4,6 (polyamide 4,6), PA FV (polyamides fibres de verre), PPS (polyphenylene sulphide).Advantageously, said synthetic material comprises one or more of the following components: PEN (polyethylene naphthalate), POM (polyoxymethylene), PSU (polysulfone), PEEK (polyetherether cetone), PEK (polyether ketone), PAEK (polyarylether ketone), PPE (polyphenyl ether) PEI (polyetherimide), PA 4.6 (polyamide 4.6), PA FV (glass fiber polyamides), PPS (polyphenylene sulphide).

Avantageusement, ledit produit fluide est un produit pharmaceutique.Advantageously, said fluid product is a pharmaceutical product.

Avantageusement, ledit gaz propulseur comprend des gaz HFA-134a ou HFA-227, avec ou sans alcool.Advantageously, said propellant gas comprises HFA-134a or HFA-227 gases, with or without alcohol.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement au cours de la description détaillée suivante d'un mode de réalisation particulier de celle-ci, faite en référence aux dessins joints, donnés à titre d'exemples non limitatifs, et sur lesquels

  • la figure 1 est une vue schématique en section transversale d'un dispositif de distribution selon un mode de réalisation particulier de la présente invention,
  • les figures 2 et 3 sont des vues partielles montrant deux variantes de réalisation de la partie supérieure d'un dispositif de distribution selon la présente invention, et
  • les figures 4 à 7 sont des vues partielles montrant quatre variantes de réalisation de la partie inférieure d'un dispositif de distribution selon la présente invention.
Other features and advantages of the present invention will appear more clearly in the following detailed description of a particular embodiment thereof, with reference to the accompanying drawings, given by way of non-limiting examples, and on which
  • FIG. 1 is a schematic cross-sectional view of a dispensing device according to a particular embodiment of the present invention,
  • Figures 2 and 3 are partial views showing two alternative embodiments of the upper part of a dispensing device according to the present invention, and
  • Figures 4 to 7 are partial views showing four alternative embodiments of the lower part of a dispensing device according to the present invention.

La présente invention s'applique à tout type de dispositif de distribution de produit fluide dans lequel un gaz propulseur est utilisé pour réaliser la distribution. Les exemples ci-après comportent des valves doseuses, c'est-à-dire des valves distribuant une dose précise et reproductible à chaque actionnement du dispositif, mais il est entendu que la présente invention ne se limite pas à ce type de valve.The present invention applies to any type of fluid dispenser device in which a propellant gas is used to perform the dispensing. The examples below include metering valves, that is to say valves dispensing a precise and reproducible dose at each actuation of the device, but it is understood that the present invention is not limited to this type of valve.

En référence aux figures, le dispositif comporte un réservoir 1 contenant le produit fluide et un gaz propulseur liquéfié. Par produit fluide, on entend tout produit liquide, pâteux, gazeux ou pulvérulent qui peut être associé d'une manière quelconque avec un gaz propulseur en vue de son expulsion. Une valve 10, comportant un corps de valve 11, est prévue pour réaliser 1a distribution du contenu du réservoir, ladite valve pouvant être assemblée sur le réservoir 1 au moyen d'une bague ou capsule de fixation 20, qui dans l'exemple de la figure 2 est une capsule sertissable alors que dans l'exemple des figures 1 et 3, il s'agit d'une bague d'encliquetage comportant des moyens d'encliquetage 21 spécifiques. Bien entendu, tout type de bague ou capsule de fixation 20 peut être associé à la présente invention.With reference to the figures, the device comprises a reservoir 1 containing the fluid product and a liquefied propellant gas. By fluid product is meant any liquid product, pasty, gaseous or powder that can be associated in any way with a propellant for expulsion. A valve 10, having a valve body 11, is provided for dispensing the contents of the reservoir, said valve being able to be assembled on the reservoir 1 by means of a fixing ring or capsule 20, which in the example of FIG. Figure 2 is a crimpable capsule while in the example of Figures 1 and 3, it is a snap ring having specific latching means 21. Of course, any type of ring or attachment capsule 20 may be associated with the present invention.

Avantageusement, le fond 2 du réservoir peut être fixée de manière étanche au réservoir 1 par surinjection. De préférence, le fond 2 et le matériau surinjecté 3 sont formés du même matériau que le réservoir 1. La fixation et l'étanchéité doivent évidemment résister à la pression à l'intérieur du réservoir 1.Advantageously, the bottom 2 of the reservoir can be sealed to the reservoir 1 by overinjection. Preferably, the bottom 2 and the superinjected material 3 are formed of the same material as the tank 1. The fixing and sealing must obviously withstand the pressure inside the tank 1.

Les figures 4 à 7 représentent différentes variantes de réalisation. La figure 4, comme la figure 1, montre une pièce de fixation 3 surinjectée sur des nervures radiales 6 et 7, respectivement solidaires du réservoir 1 et du fond 2. Les figures 5 et 6 montrent deux variantes dans lesquelles la fixation et l'étanchéité sont assurées par la liaison intime, similaire à un collage, obtenue lors de la surinjection du matériau 3. La figure 7 montre une fixation particulièrement solide, dans laquelle le réservoir 1 comporte plusieurs fenêtres 5 et le fond 2 comporte une rainure 8, ou similaire, le matériau injecté 3 remplissant lesdites fenêtres 5 et ladite rainure 8 pour assurer la fixation et l'étanchéité.Figures 4 to 7 show different embodiments. FIG. 4, like FIG. 1, shows a fastening piece 3 superimposed on radial ribs 6 and 7 respectively integral with the tank 1 and the bottom 2. FIGS. 5 and 6 show two variants in which the fastening and sealing are ensured by the intimate bond, similar to a bond, obtained during the overinjection of the material 3. Figure 7 shows a particularly strong attachment, in which the tank 1 has several windows 5 and the bottom 2 has a groove 8, or the like , the injected material 3 filling said windows 5 and said groove 8 for fixing and sealing.

La valve 10 comporte un corps de valve 11 dans lequel une soupape 12 coulisse de manière étanche entre une position de repos, représentée sur les figures, et une position de distribution, dans laquelle la soupape est enfoncée à l'intérieur du corps de valve pour permettre l'expulsion du produit.The valve 10 comprises a valve body 11 in which a valve 12 slides in a sealed manner between a rest position, shown in the figures, and a dispensing position, in which the valve is pressed inside the valve body to allow the expulsion of the product.

Selon l'invention, le réservoir est réalisé en un matériau synthétique hautes performances. Ce matériau synthétique doit résister à la pression du gaz propulseur et doit donc présenter des propriétés appropriées. En particulier, il a de préférence une faible perméabilité à l'eau et aux gaz, notamment l'oxygène, une résistance élevée aux chocs, et des modules de traction et de flexion élevés, de sorte que ce matériau est particulièrement rigide. Les caractéristiques de rigidité de matériau permettent ainsi de se dispenser de l'utilisation de métal dans la réalisation du réservoir. De même, il n'est plus nécessaire de prévoir un revêtement en matière synthétique tapissant généralement les réservoirs métalliques destiné à éviter toute interférence entre le produit contenu dans le réservoir et les surfaces métalliques du réservoir. Avantageusement, ce matériau présente également un faible coefficient linéaire de dilatation, ce qui améliore encore sa capacité à être utilisé avec des réservoirs sous pression. Avantageusement, le matériau synthétique a une perméabilité à l'oxygène inférieure à 10 cm3/m2/jour, en se référant à une pression de 1 bar, une épaisseur de paroi de 25 µm, une température de 23°C et à 0% d'humidité relative. De préférence, cette perméabilité est même inférieure à 1 cm3/m2/jour. De même, le matériau synthétique a avantageusement une perméabilité à l'eau inférieure à 10g/m2/jour, de préférence inférieure à 1g/m2/jour, en se référant à une pression de 1 bar, une épaisseur de paroi de 25 µm, une température de 38°C et à 90% d'humidité relative. Le tableau 1 montre que le LCP (Liquid Crystal Polymère) présente d'excellentes propriétés de perméabilité. TABLEAU 1 LCP Polypropylène Polyamide 6 Perméabilité à l'oxygène cm3/m2/jour 1 bar, 25 µm, 23°C, 0% 0,9 > 2 000 > 75 Perméabilité à l'eau g/m2/jour 1 bar, 25 µm, 38°C, 90% 0,3 7 > 300 According to the invention, the reservoir is made of a high-performance synthetic material. This synthetic material must withstand the pressure of the propellant and must therefore have appropriate properties. In particular, it preferably has a low permeability to water and gases, especially oxygen, high impact resistance, and high tensile and flexural modules, so that this material is particularly rigid. The material stiffness characteristics thus make it possible to dispense with the use of metal in the production of the tank. Similarly, it is no longer necessary to provide a synthetic coating usually lining the metal tanks to avoid interference between the product in the tank and the metal surfaces of the tank. Advantageously, this material also has a low coefficient of linear expansion, which further improves its ability to be used with pressure tanks. Advantageously, the synthetic material has an oxygen permeability less than 10 cm 3 / m 2 / day, with reference to a pressure of 1 bar, a wall thickness of 25 μm, a temperature of 23 ° C and 0% relative humidity. Preferably, this permeability is even less than 1 cm 3 / m 2 / day. Likewise, the synthetic material advantageously has a water permeability of less than 10 g / m 2 / day, preferably less than 1 g / m 2 / day, with reference to a pressure of 1 bar, a wall thickness of 25. μm, a temperature of 38 ° C and at 90% relative humidity. Table 1 shows that LCP (Liquid Crystal Polymer) has excellent permeability properties. <u> TABLE 1 </ u> LCP polypropylene Polyamide 6 Oxygen permeability cm 3 / m 2 / day 1 bar, 25 μm, 23 ° C, 0% 0.9 > 2,000 > 75 Permeability to water g / m 2 / day 1 bar, 25 μm, 38 ° C, 90% 0.3 7 > 300

Les modules de traction et de flexion du matériau synthétique sont avantageusement supérieurs à 5 000 Mpa, de préférence supérieurs à 10 000 Mpa.The tensile and flexural modules of the synthetic material are advantageously greater than 5,000 MPa, preferably greater than 10,000 MPa.

Le tableau 2 présente un certain nombre de matériaux synthétiques hautes performances dont les propriétés sont comparées à l'aluminium.

Figure imgb0001
Table 2 shows a number of high performance synthetic materials whose properties are compared to aluminum.
Figure imgb0001

Le tableau 2 montre clairement que différents matériaux synthétiques peuvent être utilisés pour réaliser la présente invention. Il apparaît toutefois que le LCP (Liquid Crystal Polymer) présente les meilleures caractéristiques. En effet, il remplit de manière optimale les exigences pour toutes les propriétés requises (perméabilité, rigidité, résistance aux chocs). Il présente en outre un avantage important par rapport à la plupart des autres matériaux présentés dans ce tableau, à savoir que la température du moule lors du moulage du LCP est généralement inférieure à 100°C, alors que les autres matériaux nécessitent une température de moule supérieure à 150°C. Ceci permet de réaliser la fabrication du réservoir à moindre coût, sans avoir à utiliser des moules fonctionnant à très haute température, qui sont compliqués et coûteux à fabriquer et à utiliser.Table 2 clearly shows that different synthetic materials can be used to achieve the present invention. However, it appears that the LCP (Liquid Crystal Polymer) has the best characteristics. Indeed, it optimally fulfills the requirements for all required properties (permeability, rigidity, impact resistance). It also has a significant advantage over most other materials presented in this table, namely that the mold temperature during LCP molding is generally less than 100 ° C, while other materials require a mold temperature. above 150 ° C. This makes it possible to manufacture the tank at a lower cost, without having to use molds operating at very high temperatures, which are complicated and expensive to manufacture and use.

Les autres matériaux synthétiques du tableau 2 pourraient également être utilisés, seuls ou en mélange, en fonction des exigences liées au produit fluide et/ou au gaz propulseur. Le PEN (polyéthylène naphtalate) est également envisageable.The other synthetic materials of Table 2 could also be used, alone or as a mixture, depending on the requirements of the fluid and / or the propellant. PEN (polyethylene naphthalate) is also possible.

Ces matériaux présentent toutefois des caractéristiques inférieures au LCP en ce qui concerne la perméabilité à l'eau et à l'oxygène, le LCP étant par conséquent le matériau préféré pour réaliser la présente invention.These materials, however, exhibit inferior LCP characteristics with respect to water and oxygen permeability, with LCP therefore being the preferred material for carrying out the present invention.

Il est à noter que les matériaux synthétiques habituellement utilisés pour la fabrication des réservoirs ou bidons de dispositifs de distribution de produit fluide ne sont pas adaptés pour réaliser des réservoirs de dispositifs aérosols à cause de la pression. Ainsi, par exemple, la polyoléfine, le polypropylène, certains polyester, le polyacétal, le polystyrène ou certains polyamides présentent des problèmes de tenue en pression et/ou des propriétés mécaniques insuffisantes et/ou des perméabilités inacceptables. Ces matériaux ne sont donc pas adaptés pour être utilisés dans le cadre de réservoirs de dispositifs de distribution de produit fluide contenant un gaz propulseur. Certains de ces matériaux réagissent également défavorablement avec les solvants et/ou les gaz propulseur, de sorte qu'ils ne sont pas adaptés à la distribution de produits pharmaceutiques.It should be noted that the synthetic materials usually used for the manufacture of tanks or cans of fluid dispensing devices are not suitable for producing tanks of aerosol devices because of the pressure. Thus, for example, polyolefin, polypropylene, certain polyesters, polyacetal, polystyrene or certain polyamides have problems of resistance to pressure and / or insufficient mechanical properties and / or unacceptable permeabilities. These materials are therefore not suitable for use in the context of tanks for fluid dispensing devices containing a propellant. Some of these materials also react adversely with solvents and / or propellants, so that they are not suitable for dispensing pharmaceuticals.

De manière avantageuse comme représentée sur les figures, le réservoir 1 et le corps de valve 11 sont réalisés d'une seule pièce monobloc. De préférence, cet ensemble est réalisé par moulage à partir d'un matériau synthétique hautes performances tel que décrit ci-dessus. Ceci n'est évidemment pas réalisable avec des réservoirs réalisés en métal, et notamment en aluminium, et l'utilisation de matériaux synthétiques hautes performances permet donc non seulement de réaliser le corps de valve et le réservoir d'une seule pièce, mais encore de réaliser les formes souhaitées pour le réservoir, le moulage d'un matériau synthétique ne posant aucun problème. Cette réalisation particulièrement avantageuse d'un corps de valve et d'un réservoir monobloc participe pleinement à un but recherché par l'invention qui est dé simplifier la fabrication ainsi que l'assemblage du dispositif et de diminuer son coût de revient.Advantageously as shown in the figures, the reservoir 1 and the valve body 11 are made in one piece. Preferably, this assembly is made by molding from a high performance synthetic material as described above. This is obviously not feasible with tanks made of metal, and in particular aluminum, and the use of high performance synthetic materials thus allows not only to realize the valve body and the tank in one piece, but also to to achieve the desired shapes for the tank, the molding of a synthetic material posing no problem. This particularly advantageous embodiment of a valve body and a monobloc tank fully participates in a goal sought by the invention which is to simplify the manufacture and assembly of the device and reduce its cost.

Une utilisation particulière du dispositif de la présente invention concerne la distribution de produit pharmaceutique. A ce niveau également, le matériau synthétique doit présenter des propriétés satisfaisantes en ce qui concerne l'interaction entre le matériau synthétique et le médicament contenu dans le réservoir. A nouveau, pour cette propriété, le LCP présente des caractéristiques optimales, de sorte qu'il est particulièrement adapté à être utilisé dans le cadre de la présente invention. Les gaz propulseurs préférés sont des gaz du type HFA-134a ou HFA-227, avec ou sans alcool, qui ne sont pas nocifs pour l'environnement. L'utilisation de ces gaz propulseurs augmente toutefois la pression à l'intérieur du réservoir en comparaison aux gaz propulseurs précédents (gaz CFC), qui sont maintenant interdits pour des raisons liées à la protection de l'environnement. Des matériaux synthétiques qui auraient pu s'avérés satisfaisants avec les gaz CFC ne peuvent plus être utilisés avec les gaz HFA, en particulier le HFA-134a, et la présente invention permet de résoudre ce problème, en particulier lorsque le matériau utilisé est du LCP.A particular use of the device of the present invention relates to the dispensing of pharmaceutical product. At this level also, the synthetic material must have satisfactory properties as regards the interaction between the synthetic material and the drug contained in the reservoir. Again, for this property, the LCP exhibits optimum characteristics, so that it is particularly suitable for use in the context of the present invention. The preferred propellants are HFA-134a or HFA-227, with or without alcohol, which are not harmful to the environment. The use of these propellants, however, increases the pressure inside the tank compared to previous propellants (CFC gas), which are now prohibited for reasons related to the protection of the environment. Synthetic materials that could have been found satisfactory with CFC gases can no longer be used with HFA gases, especially HFA-134a, and the present invention solves this problem, particularly when the material used is LCP. .

La présente invention a été décrite en référence à un exemple particulier, mais il est entendu que toute modification peut y être apportée par l'homme du métier sans sortir du cadre de la présente invention tel que défini par les revendications annexées.The present invention has been described with reference to a particular example, but it is understood that any modification may be made by those skilled in the art without departing from the scope of the present invention as defined by the appended claims.

Claims (12)

  1. A distribution device for fluid product, including a reservoir (1), containing the fluid product and a propellant gas, and a valve (10), including a valve body (11) and a valve stem (12) sliding in said valve body (11) between a rest position and a distribution position, characterized in that said reservoir (1) is made from a one-piece part with said valve body (11), said reservoir (1) and said valve body (11) being rigid and made from a high performance synthetic material resistant to the pressure of the propellant gas, said material having a low permeability to water and to gases.
  2. The device according to claim 1, wherein the reservoir (1) is made by moulding.
  3. The device according to claim 1 or 2, wherein the reservoir (1) includes a bottom (2) sealably attached to the reservoir (1) by overinjection.
  4. The device according to any of the preceding claims, wherein said synthetic material has high tensile and flexural moduluses and/or high shock resistance.
  5. The device according to any of the preceding claims, wherein the synthetic material has a low linear expansion coefficient.
  6. The device according to any of the preceding claims, wherein the temperature of the mould during the moulding of said synthetic material is below 100°C.
  7. The device according to any of the preceding claims, wherein said synthetic material has a permeability to oxygen less than 10 cm3/m2/day, preferably less than 1 cm3/m2/day, and a permeability to water less than 10 g/m2/day, preferably less than 1 g/m2/day, at a pressure of 1 bar for a thickness of 25 µm.
  8. The device according to any of the preceding claims, wherein said synthetic material has tensile and flexural moduluses larger than 5,000 MPa, preferably larger than 10,000 MPa.
  9. The device according to any of the preceding claims, wherein said synthetic material comprises LCP (Liquid Crystal Polymer).
  10. The device according to any of the preceding claims, wherein said synthetic material comprises one or more of the following components: PEN (polyethylene naphthalate), POM (polyoxymethylene), PSU (polysulfone), PEEK (polyetherether ketone), PEK (polyether ketone), PAEK (polyarylether ketone), PPE (polyphenylether), PEI (polyether imide), PA 4,6 (polyamide 4,6), PA FV (polyamides with glass fibers), PPS (polyphenylene sulphide).
  11. The device according to any of the preceding claims, wherein said fluid product is a pharmaceutical product.
  12. The device according to any of the preceding claims, wherein said propellant gas comprises HFA-134a or HFA-227 gases, with or without alcohol.
EP04719488A 2003-03-13 2004-03-11 Distribution device for fluid product Expired - Lifetime EP1606194B1 (en)

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FR0303136A FR2852301B1 (en) 2003-03-13 2003-03-13 DEVICE FOR DISPENSING FLUID PRODUCT
FR0303136 2003-03-13
PCT/FR2004/000582 WO2004083045A2 (en) 2003-03-13 2004-03-11 Distribution device for fluid product

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CN1832891A (en) 2006-09-13
FR2852301B1 (en) 2006-02-10
EP1606194A2 (en) 2005-12-21
US20060249543A1 (en) 2006-11-09
JP4406424B2 (en) 2010-01-27
WO2004083045A2 (en) 2004-09-30
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DE602004002199D1 (en) 2006-10-12
CN100475663C (en) 2009-04-08

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