EP0852210A2 - Dispensing device of solid particles containing liquid - Google Patents

Dispensing device of solid particles containing liquid Download PDF

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Publication number
EP0852210A2
EP0852210A2 EP98400008A EP98400008A EP0852210A2 EP 0852210 A2 EP0852210 A2 EP 0852210A2 EP 98400008 A EP98400008 A EP 98400008A EP 98400008 A EP98400008 A EP 98400008A EP 0852210 A2 EP0852210 A2 EP 0852210A2
Authority
EP
European Patent Office
Prior art keywords
liquid
plunger member
porous element
porous
container
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.)
Withdrawn
Application number
EP98400008A
Other languages
German (de)
French (fr)
Other versions
EP0852210A3 (en
Inventor
Daniel De Rosa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar France SAS
Original Assignee
Valois SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP0852210A2 publication Critical patent/EP0852210A2/en
Publication of EP0852210A3 publication Critical patent/EP0852210A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/32—Dip-tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0811—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container
    • B05B9/0816—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump
    • B05B9/0822—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material comprising air supplying means actuated by the operator to pressurise or compress the container the air supplying means being a manually actuated air pump a discharge device being fixed to the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/0805—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material
    • B05B9/0838—Apparatus to be carried on or by a person, e.g. of knapsack type comprising a pressurised or compressible container for liquid or other fluent material supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container

Definitions

  • the present invention relates to a device for dispensing a liquid containing solid particles, this device being equipped with a distribution head of the manual pump type or valve type for pressurized container.
  • Liquid distribution devices include, known manner, a container containing the liquid to be dispensed; So container is suitable for a dispensing head comprising a liquid distribution, said channel communicating with the container by a valve capable of opening and closing this communication.
  • the dispensing head can constitute a manual pump when the container is not pressurized; when the container contains a fluid under pressure, the dispensing head has a push button and a valve.
  • a hollow plunger member the most often a tube is attached to the inlet opening of the dispensing head and extends to the vicinity of the bottom of the container.
  • This plunger organ allows to draw the liquid to be distributed near the bottom of the container and use the "head up" dispensing device, i.e. without having to turn the device over so that the liquid to be dispensed either in direct contact with the inlet opening of the dispensing head.
  • distribution devices of this type have the following drawback: when the liquid to be dispensed contains solid particles in suspension, these solid particles are entrained with the liquid in the plunger and are likely to plug this plunger and the distribution channel of the head distribution and are also likely to disrupt the pump or valve operation.
  • This drawback appears, for example, when the liquid to be dispensed is a composition antiperspirant containing aluminum salts suspended in a liquid or perfume containing gold glitter of a few micrometers thick.
  • a plunger member is used in the distribution device comprising a porous element at least at the level where it gives access to the liquid to be dispensed, preferably near its free end.
  • the present invention therefore relates to a device for dispensing a liquid containing solid particles, this device comprising a container containing the liquid to be dispensed and a dispensing head carried by said container, a plunger member being fixed on the inlet opening of the dispensing head and having its free end being disposed in the vicinity of the bottom of the container, characterized in that the plunger member includes at least one porous element with open porosity through which the passage of the liquid L, the part of the plunger member not constituted by said porous element being impermeable to the liquid to be dispensed and the porous element being arranged so as to be below the level of the liquid, when the container is full and placed in its position distribution.
  • the porous element is arranged below of the liquid level when the container is full and placed in its distribution position; preferably it is arranged so as to remain fully immersed in the liquid for as long as possible dispense when the liquid is being dispensed; by therefore, the porous element is preferably arranged in the vicinity from the free end of the plunger, where it is usually found the inlet opening of the plunger member.
  • the porous element when in contact with the liquid to dispensing, is crossed by the liquid during dispensing; he therefore retains the solid particles contained in the liquid.
  • the gas passes through the element porous either under the action of pressure prevailing in a container pressurized either under the action of the vacuum generated by the pump to an unpressurized container; there is then a loss of gas at the level of the porous element.
  • the porous element is an element with open pores so to allow the liquid to pass through it.
  • the size of the pores must be suitable for retaining solid particles in the liquid to distribute.
  • the size of the pores is chosen according to the pressure difference ⁇ P under which the distribution takes place. The higher this pressure difference, the larger the pores can be small. It is within the reach of the skilled person to choose the size of the pores.
  • the porous element generally has a pore size between 7 and 250 micrometers.
  • any porous material such as than sintered glass or ceramic. It is preferable to use a material porous expanded plastic, for example expanded polypropylene.
  • porous plastic is advantageous because it allows give the porous element any desired shape and it corresponds to a low cost price.
  • the plunger member is made entirely of a porous material, which carries a sheathing over most of its surface, so as to make it waterproof, with the exception of at least one area forming the porous element.
  • Cladding can be obtained, either by placing around the plunger a plastic sheath, for example a plastic tube, either by depositing on the porous plunger a layer of substance likely to clog pores and make the plunger raincoat ; said substance may be a varnish or a paint and it can be applied using an applicator such as a brush or by spray. It is also possible to prepare the cladding during the manufacture of the porous element by molding with bi-injection of a porous plastic and a plastic impermeable to liquid to be dispensed.
  • the plunger member is a member impermeable to the liquid distribute, for example a plastic tube, and the opening located at its free end is closed by the porous element.
  • the element porous has, preferably, the shape of a bowl, which is fitted by its edge on the free end of the plunger member.
  • the plunger member advantageously has the shape of a cylinder having, in particular, a circular section. But, when it is made entirely of porous material, it can be molded according to any shape: sinusoidal, zig-zag or a shape aesthetic, for example, a silhouette; indeed, the plunger porous can easily be deformed for its introduction into the container and can then return to its original shape in the container.
  • the plunger is made of porous plastic, the porous plastic is flexible; by cladding with a substance impermeable to the liquid to be dispensed, it is then possible more or less rigidify the plunger member in any form.
  • FIG. 1 represents a distribution device of the type "aerosol can", generally designated by the reference 1.
  • This dispensing device comprises a container 2 provided with a bottom 3 and a neck 4.
  • the container 2 contains a liquid L to be dispensed containing solid particles and a liquefied propellant; above of the liquid phase the propellant is in the gas phase, which pressurizes the container to a pressure equal to the vapor pressure of the propellant at liquid phase temperature.
  • neck 4 of container 2 is fixed by screwing or crimping a dispensing head 5.
  • This distribution head is provided with a distribution channel opening at 6 and a valve (not shown) capable of in communication the container 2 and the distribution channel.
  • a plunger member designated by 7 On the hole valve inlet is fixed a plunger member designated by 7 in its together.
  • This plunger member is constituted by a cylinder 8 in expanded polypropylene onto which a spray has been deposited varnished to form a sheath 9 over most of its length, except in the vicinity of the free end of the cylinder 8; we thus forms at the end of the plunger a porous element 10 whose free end 11 is located near the bottom 3 of the container 2.
  • the liquid L containing solid particles, which is contained in container 2 enters under the action of gas pressure in the plunger member by the porous element 10.
  • the liquid L is therefore filtered through the element porous 10 of the plunger member; pore size of the organ plunger is chosen to avoid clogging of the porous element 10 by the solid particles of liquid L.
  • Figures 2 and 3 show a second mode of realization of a distribution device according to the invention.
  • the device 101 comprises a container not pressurized, the outlet of the liquid L to be dispensed being provided by a head 105 with a manual pump.
  • the elements of this embodiment similar to those shown in Figure 1 bear the same reference to which 100 has been added.
  • the organ plunger 107 is constituted by a hollow cylindrical tube 108 in polyethylene, impermeable to liquid L.
  • this element 110 has the shape of a bowl and has a flat wall 113, which closes the opening 114 of the tube 108 and a cylindrical side wall 112 which constitutes the edge of the bowl and surrounds the wall of the tube 108 at its free end.
  • the tube 108 can have an external diameter of 1.6 mm and a wall thickness 0.35 mm.
  • the flat wall 113 of the porous element 110 has a thickness of 1 mm and the distance between the bottom 103 of the container and the flat wall 113 is 0.5 mm.
  • the filtering function is performed in the same way as for the device in FIG. 1.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

The dispenser consists of a container (1) holding the liquid (L), a spray head (5) and a plunger tube (7) connecting the intake of the head to the liquid. The plunger is equipped with at least one porous element (10) with open pores for the liquid to pass through, while the plunger tube itself is impervious to the liquid. In one variant of the design the plunger tube can be made from a porous polypropylene cylinder coated with a layer of varnish to make it impermeable to the liquid for almost its whole length, except for a tip forming a porous intake. In another the plunger can be a hollow polyethylene tube with a porous insert or end cover.

Description

La présente invention concerne un dispositif pour la distribution d'un liquide contenant des particules solides, ce dispositif étant équipé d'une tête de distribution du type pompe manuelle ou du type valve pour récipient pressurisé.The present invention relates to a device for dispensing a liquid containing solid particles, this device being equipped with a distribution head of the manual pump type or valve type for pressurized container.

Les dispositifs de distribution de liquide comportent, de façon connue, un récipient contenant le liquide à distribuer ; sur ce récipient est adaptée une tête de distribution comportant un canal de distribution du liquide, ledit canal communiquant avec le récipient par une valve susceptible d'ouvrir et de fermer cette communication. La tête de distribution peut constituer une pompe manuelle lorsque le récipient n'est pas pressurisé ; lorsque le récipient contient un fluide sous pression, la tête de distribution comporte un bouton-poussoir et une valve.Liquid distribution devices include, known manner, a container containing the liquid to be dispensed; So container is suitable for a dispensing head comprising a liquid distribution, said channel communicating with the container by a valve capable of opening and closing this communication. The dispensing head can constitute a manual pump when the container is not pressurized; when the container contains a fluid under pressure, the dispensing head has a push button and a valve.

De façon connue, un organe plongeur creux, le plus souvent un tube, est fixé sur l'orifice d'entrée de la tête de distribution et s'étend jusqu'au voisinage du fond du récipient. Cet organe plongeur permet de prélever le liquide à distribuer au voisinage du fond du récipient et d'utiliser le dispositif de distribution "tête en haut", c'est-à-dire sans avoir à retourner le dispositif pour que le liquide à distribuer soit en contact direct avec l'orifice d'entrée de la tête de distribution.In known manner, a hollow plunger member, the most often a tube is attached to the inlet opening of the dispensing head and extends to the vicinity of the bottom of the container. This plunger organ allows to draw the liquid to be distributed near the bottom of the container and use the "head up" dispensing device, i.e. without having to turn the device over so that the liquid to be dispensed either in direct contact with the inlet opening of the dispensing head.

Cependant, les dispositifs de distribution de ce type présentent l'inconvénient suivant : lorsque le liquide à distribuer contient des particules solides en suspension, ces particules solides sont entraínées avec le liquide dans l'organe plongeur et sont susceptibles de boucher cet organe plongeur ainsi que le canal de distribution de la tête de distribution et sont également susceptibles de perturber le fonctionnement de la pompe ou de la valve. Cet inconvénient apparaít, par exemple, lorsque le liquide à distribuer est une composition antiperspirante contenant des sels d'aluminium en suspension dans un liquide ou un parfum contenant des paillettes d'or de quelques micromètres d'épaisseur.However, distribution devices of this type have the following drawback: when the liquid to be dispensed contains solid particles in suspension, these solid particles are entrained with the liquid in the plunger and are likely to plug this plunger and the distribution channel of the head distribution and are also likely to disrupt the pump or valve operation. This drawback appears, for example, when the liquid to be dispensed is a composition antiperspirant containing aluminum salts suspended in a liquid or perfume containing gold glitter of a few micrometers thick.

Pour éviter cet inconvénient, selon la présente invention, on utilise dans le dispositif de distribution un organe plongeur comportant un élément poreux au moins au niveau où il donne accès au liquide à distribuer, de préférence au voisinage de son extrémité libre.To avoid this drawback, according to the present invention, a plunger member is used in the distribution device comprising a porous element at least at the level where it gives access to the liquid to be dispensed, preferably near its free end.

La présente invention a, par conséquent, pour objet un dispositif de distribution d'un liquide contenant des particules solides, ce dispositif comportant un récipient contenant le liquide à distribuer et une tête de distribution portée par ledit récipient, un organe plongeur étant fixé sur l'orifice d'entrée de la tête de distribution et ayant son extrémité libre étant disposée au voisinage du fond du récipient, caractérisé par le fait que l'organe plongeur comporte au moins un élément poreux à porosité ouverte au travers duquel s'effectue le passage du liquide L, la partie de l'organe plongeur non constituée par ledit élément poreux étant imperméable au liquide à distribuer et l'élément poreux étant disposé de façon à être au-dessous du niveau du liquide, lorsque le récipient est plein et placé dans sa position de distribution.The present invention therefore relates to a device for dispensing a liquid containing solid particles, this device comprising a container containing the liquid to be dispensed and a dispensing head carried by said container, a plunger member being fixed on the inlet opening of the dispensing head and having its free end being disposed in the vicinity of the bottom of the container, characterized in that the plunger member includes at least one porous element with open porosity through which the passage of the liquid L, the part of the plunger member not constituted by said porous element being impermeable to the liquid to be dispensed and the porous element being arranged so as to be below the level of the liquid, when the container is full and placed in its position distribution.

Selon l'invention, l'élément poreux est disposé au-dessous du niveau du liquide lorsque le récipient est plein et placé dans sa position de distribution ; de préférence, il est disposé de façon à rester entièrement plongé le plus longtemps possible dans le liquide à distribuer lorsque le liquide est en cours de distribution ; par conséquent, l'élément poreux est, de préférence, disposé au voisinage de l'extrémité libre de l'organe plongeur, où se trouve généralement l'ouverture d'entrée de l'organe plongeur.According to the invention, the porous element is arranged below of the liquid level when the container is full and placed in its distribution position; preferably it is arranged so as to remain fully immersed in the liquid for as long as possible dispense when the liquid is being dispensed; by therefore, the porous element is preferably arranged in the vicinity from the free end of the plunger, where it is usually found the inlet opening of the plunger member.

L'élément poreux, lorsqu'il est en contact avec le liquide à distribuer, est traversé par le liquide au cours de la distribution ; il retient, par conséquent, les particules solides contenues dans le liquide. Lorsque l'élément poreux vient en contact avec la couche gazeuse située au-dessus du liquide à distribuer, le gaz traverse l'élément poreux soit sous l'action de la pression régnant dans un récipient pressurisé soit sous l'action de la dépression générée par la pompe pour un récipient non pressurisé ; il se produit alors une perte de gaz au niveau de l'élément poreux.The porous element, when in contact with the liquid to dispensing, is crossed by the liquid during dispensing; he therefore retains the solid particles contained in the liquid. When the porous element comes into contact with the gas layer located above the liquid to be dispensed, the gas passes through the element porous either under the action of pressure prevailing in a container pressurized either under the action of the vacuum generated by the pump to an unpressurized container; there is then a loss of gas at the level of the porous element.

L'élément poreux est un élément à pores ouverts de façon à permettre au liquide de le traverser. La dimension des pores doit être appropriée pour retenir les particules solides contenues dans le liquide à distribuer. Par ailleurs, la dimension des pores est choisie en fonction de la différence de pression ΔP sous laquelle s'effectue la distribution. Plus cette différence de pression est élevée, plus les pores peuvent être de faible dimension. Il est à la portée de l'homme de métier de choisir la dimension des pores. Cependant, dans la pratique, l'élément poreux a généralement une taille de pores comprise entre 7 et 250 micromètres.The porous element is an element with open pores so to allow the liquid to pass through it. The size of the pores must be suitable for retaining solid particles in the liquid to distribute. Furthermore, the size of the pores is chosen according to the pressure difference ΔP under which the distribution takes place. The higher this pressure difference, the larger the pores can be small. It is within the reach of the skilled person to choose the size of the pores. However, in practice, the porous element generally has a pore size between 7 and 250 micrometers.

Selon l'invention, on peut utiliser tout matériau poreux tel que verre fritté ou céramique. On utilise, de préférence, une matière plastique expansée poreuse, par exemple du polypropylène expansé. L'utilisation d'un plastique poreux est avantageuse car elle permet de donner à l'élément poreux toute forme souhaitée et elle correspond à un faible prix de revient.According to the invention, any porous material such as than sintered glass or ceramic. It is preferable to use a material porous expanded plastic, for example expanded polypropylene. The use of porous plastic is advantageous because it allows give the porous element any desired shape and it corresponds to a low cost price.

Selon un premier mode de réalisation, l'organe plongeur est entièrement constitué d'un matériau poreux, qui porte un gainage sur la majeure partie de sa surface, de façon à le rendre étanche, à l'exception d'au moins une zone formant l'élément poreux. Le gainage peut être obtenu, soit en disposant autour de l'organe plongeur une gaine de matériau plastique, par exemple un tube de matière plastique, soit en déposant sur l'organe plongeur poreux une couche de substance susceptible de boucher les pores et de rendre l'organe plongeur imperméable ; ladite substance peut être un vernis ou une peinture et elle peut être déposée à l'aide d'un applicateur tel qu'un pinceau ou par pulvérisation. Il est également possible de préparer le gainage lors de la fabrication de l'élément poreux par moulage avec bi-injection d'une matière plastique poreuse et d'une matière plastique imperméable au liquide à distribuer.According to a first embodiment, the plunger member is made entirely of a porous material, which carries a sheathing over most of its surface, so as to make it waterproof, with the exception of at least one area forming the porous element. Cladding can be obtained, either by placing around the plunger a plastic sheath, for example a plastic tube, either by depositing on the porous plunger a layer of substance likely to clog pores and make the plunger raincoat ; said substance may be a varnish or a paint and it can be applied using an applicator such as a brush or by spray. It is also possible to prepare the cladding during the manufacture of the porous element by molding with bi-injection of a porous plastic and a plastic impermeable to liquid to be dispensed.

Selon un autre mode de réalisation du dispositif selon l'invention, l'organe plongeur est un organe imperméable au liquide à distribuer, par exemple un tube en matière plastique, et l'ouverture située à son extrémité libre est fermée par l'élément poreux. L'élément poreux a, de préférence, la forme d'une cuvette, qui est emboítée par son bord sur l'extrémité libre de l'organe plongeur.According to another embodiment of the device according to the invention, the plunger member is a member impermeable to the liquid distribute, for example a plastic tube, and the opening located at its free end is closed by the porous element. The element porous has, preferably, the shape of a bowl, which is fitted by its edge on the free end of the plunger member.

L'organe plongeur a, avantageusement, la forme d'un cylindre ayant, en particulier, une section circulaire. Mais, lorsqu'il est constitué entièrement d'un matériau poreux, il peut être moulé selon une forme quelconque : sinusoïdale, en zig-zag ou une forme esthétique, par exemple, une silhouette ; en effet, l'organe plongeur poreux peut aisément être déformé pour son introduction dans le récipient et peut reprendre ensuite sa forme initiale dans le récipient. Lorsque l'organe plongeur est fabriqué en matière plastique poreuse, la matière plastique poreuse est souple ; par gainage avec une substance imperméable au liquide à distribuer, il est ensuite possible de plus ou moins rigidifier l'organe plongeur sous une forme quelconque.The plunger member advantageously has the shape of a cylinder having, in particular, a circular section. But, when it is made entirely of porous material, it can be molded according to any shape: sinusoidal, zig-zag or a shape aesthetic, for example, a silhouette; indeed, the plunger porous can easily be deformed for its introduction into the container and can then return to its original shape in the container. When the plunger is made of porous plastic, the porous plastic is flexible; by cladding with a substance impermeable to the liquid to be dispensed, it is then possible more or less rigidify the plunger member in any form.

La description de deux modes de réalisation de l'invention est donnée ci-après à titre illustratif et non limitatif et permet, en se référant au dessin annexé, de mieux comprendre l'invention.The description of two embodiments of the invention is given below by way of illustration and not limitation and allows, in referring to the attached drawing, to better understand the invention.

Sur ce dessin :

  • la figure 1 représente schématiquement, en coupe, un premier mode de réalisation d'un dispositif selon l'invention ;
  • la figure 2 représente schématiquement, en coupe, un second mode de réalisation d'un dispositif selon l'invention ;
  • la figure 3 est une vue partielle agrandie de l'extrémité de l'organe plongeur de la figure 2.
On this drawing :
  • Figure 1 shows schematically, in section, a first embodiment of a device according to the invention;
  • FIG. 2 schematically represents, in section, a second embodiment of a device according to the invention;
  • FIG. 3 is an enlarged partial view of the end of the plunger member of FIG. 2.

La figure 1 représente un dispositif de distribution du type "bombe aérosol", désigné dans son ensemble par la référence 1. Ce dispositif de distribution comporte un récipient 2 muni d'un fond 3 et d'un goulot 4. Le récipient 2 contient un liquide L à distribuer renfermant des particules solides et un gaz propulseur liquéfié ; au-dessus de la phase liquide le propulseur est en phase gazeuse, ce qui pressurise le récipient à une pression égale à la tension de vapeur du propulseur à la température de la phase liquide. Sur le goulot 4 du récipient 2, est fixée par vissage ou sertissage une tête de distribution 5. Cette tête de distribution est munie d'un canal de distribution débouchant en 6 et d'une valve (non représentée) susceptible de mettre en communication le récipient 2 et le canal de distribution. Sur l'orifice d'entrée de la valve est fixé un organe plongeur désigné par 7 dans son ensemble. Cet organe plongeur est constitué par un cylindre 8 en polypropylène expansé sur lequel on a déposé par pulvérisation un vernis de façon à former un gainage 9 sur la majeure partie de sa longueur, sauf au voisinage de l'extrémité libre du cylindre 8 ; on forme ainsi à l'extrémité de l'organe plongeur un élément poreux 10 dont l'extrémité libre 11 est située au voisinage du fond 3 du récipient 2.FIG. 1 represents a distribution device of the type "aerosol can", generally designated by the reference 1. This dispensing device comprises a container 2 provided with a bottom 3 and a neck 4. The container 2 contains a liquid L to be dispensed containing solid particles and a liquefied propellant; above of the liquid phase the propellant is in the gas phase, which pressurizes the container to a pressure equal to the vapor pressure of the propellant at liquid phase temperature. On neck 4 of container 2, is fixed by screwing or crimping a dispensing head 5. This distribution head is provided with a distribution channel opening at 6 and a valve (not shown) capable of in communication the container 2 and the distribution channel. On the hole valve inlet is fixed a plunger member designated by 7 in its together. This plunger member is constituted by a cylinder 8 in expanded polypropylene onto which a spray has been deposited varnished to form a sheath 9 over most of its length, except in the vicinity of the free end of the cylinder 8; we thus forms at the end of the plunger a porous element 10 whose free end 11 is located near the bottom 3 of the container 2.

Lorsqu'on actionne la tête de distribution, le liquide L, contenant des particules solides, qui est contenu dans le récipient 2 entre sous l'action de la pression gazeuse dans l'organe plongeur par l'élément poreux 10. Le liquide L est donc filtré à travers l'élément poreux 10 de l'organe plongeur ; la taille des pores de l'organe plongeur est choisie pour éviter le colmatage de l'élément poreux 10 par les particules solides du liquide L. Il n'y a, par conséquent, plus de risque de bouchage de l'organe plongeur 7 et du canal de distribution ni de risque de perturbation du fonctionnement de la valve.When the dispensing head is actuated, the liquid L, containing solid particles, which is contained in container 2 enters under the action of gas pressure in the plunger member by the porous element 10. The liquid L is therefore filtered through the element porous 10 of the plunger member; pore size of the organ plunger is chosen to avoid clogging of the porous element 10 by the solid particles of liquid L. There is, therefore, more than risk of blockage of the plunger member 7 and the distribution channel or risk of disruption of valve operation.

Les figures 2 et 3 représentent un second mode de réalisation d'un dispositif de distribution selon l'invention. Dans ce mode de réalisation, le dispositif 101 comporte un récipient non pressurisé, la sortie du liquide L à distribuer étant assurée par une tête de distribution 105 comportant une pompe manuelle. Les éléments de ce mode de réalisation analogues à ceux représentés sur la figure 1 portent la même référence à laquelle on a ajouté 100. L'organe plongeur 107 est constitué par un tube cylindrique creux 108 en polyéthylène, imperméable au liquide L. A l'extrémité libre du tube 108 est fixé, par emboítage, un élément poreux 110 : cet élément 110 a la forme d'une cuvette et comporte une paroi plane 113, qui ferme l'ouverture 114 du tube 108 et une paroi latérale cylindrique 112 qui constitue le bord de la cuvette et entoure la paroi du tube 108 à son extrémité libre.Figures 2 and 3 show a second mode of realization of a distribution device according to the invention. In this embodiment, the device 101 comprises a container not pressurized, the outlet of the liquid L to be dispensed being provided by a head 105 with a manual pump. The elements of this embodiment similar to those shown in Figure 1 bear the same reference to which 100 has been added. The organ plunger 107 is constituted by a hollow cylindrical tube 108 in polyethylene, impermeable to liquid L. At the free end of the tube 108 is fixed, by fitting, a porous element 110: this element 110 has the shape of a bowl and has a flat wall 113, which closes the opening 114 of the tube 108 and a cylindrical side wall 112 which constitutes the edge of the bowl and surrounds the wall of the tube 108 at its free end.

Pour un récipient de 50 ml, par exemple, le tube 108 peut avoir un diamètre externe de 1,6 mm et une épaisseur de paroi de 0,35 mm. La paroi plane 113 de l'élément poreux 110 a une épaisseur de 1 mm et la distance entre le fond 103 du récipient et la paroi plane 113 est de 0,5 mm.For a 50 ml container, for example, the tube 108 can have an external diameter of 1.6 mm and a wall thickness 0.35 mm. The flat wall 113 of the porous element 110 has a thickness of 1 mm and the distance between the bottom 103 of the container and the flat wall 113 is 0.5 mm.

Selon cette réalisation, la fonction de filtrage est réalisée de la même façon que pour le dispositif de la figure 1.According to this embodiment, the filtering function is performed in the same way as for the device in FIG. 1.

Claims (10)

Dispositif de distribution (1, 101) d'un liquide (L) contenant des particules solides, ce dispositif comportant un récipient (1, 101) contenant le liquide (L) à distribuer et une tête de distribution (5, 105) portée par ledit récipient, un organe plongeur (7, 107) étant fixé sur l'orifice d'entrée de la tête de distribution et ayant son extrémité libre disposée au voisinage du fond (3, 103) du récipient (1, 101), caractérisé par le fait que l'organe plongeur (7, 107) comporte au moins un élément poreux (10, 110) à porosité ouverte au travers duquel s'effectue le passage du liquide (L), la partie de l'organe plongeur (7, 107) non constituée par ledit élément poreux étant imperméable au liquide (L) à distribuer et l'élément poreux (10, 110) étant disposé de façon à être au-dessous du niveau du liquide, lorsque le récipient est plein et placé dans sa position de distribution.Dispensing device (1, 101) for a liquid (L) containing solid particles, this device comprising a container (1, 101) containing the liquid (L) to be dispensed and a dispensing head (5, 105) carried by said container, a plunger member (7, 107) being fixed on the inlet of the dispensing head and having its free end disposed near the bottom (3, 103) of the container (1, 101), characterized in that the plunger member (7, 107) comprises at at least one porous element (10, 110) with open porosity through which the passage of the liquid (L) takes place, the part of the plunger member (7, 107) not constituted by said porous element being impermeable to liquid (L) to be dispensed and the porous element (10, 110) being arranged to so as to be below the liquid level, when the container is full and placed in its distribution position. Dispositif selon la revendication 1, caractérisé par le fait que l'élément poreux (10, 110) est disposé au voisinage de l'extrémité libre de l'organe plongeur (7, 107).Device according to claim 1, characterized by that the porous element (10, 110) is arranged in the vicinity of the free end of the plunger member (7, 107). Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que l'élément poreux a une taille de pores comprise entre 7 et 250 micromètres.Device according to one of claims 1 or 2, characterized in that the porous element has a pore size between 7 and 250 micrometers. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que l'élément poreux est en matière plastique expansée.Device according to one of claims 1 to 3, characterized in that the porous element is made of plastic expanded. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que l'organe plongeur (7) est entièrement constitué d'un matériau poreux qui porte un gainage (9) sur la majeure partie de sa surface de façon à le rendre étanche, à l'exception d'au moins une zone formant l'élément poreux (10).Device according to one of claims 1 to 4, characterized by the fact that the plunger member (7) is entirely made of a porous material which carries a sheath (9) on the major part of its surface so as to make it watertight, with the exception of at least one area forming the porous element (10). Dispositif selon les revendications 4 et 5 prises simultanément, caractérisé par le fait que le gainage (9) est obtenu en disposant autour de l'organe plongeur (7) une gaine de matériau plastique.Device according to claims 4 and 5 taken simultaneously, characterized in that the cladding (9) is obtained by having a sheath of material around the plunger member (7) plastic. Dispositif selon les revendications 4 et 5 prises simultanément, caractérisé par le fait que le gainage (9) est obtenu en déposant sur l'organe plongeur (7) une couche de substance susceptible de boucher les pores et de rendre l'organe plongeur (7) imperméable au liquide (L).Device according to claims 4 and 5 taken simultaneously, characterized in that the cladding (9) is obtained by depositing on the plunger member (7) a layer of substance susceptible to plug the pores and make the plunger member (7) impermeable to liquid (L). Dispositif selon les revendications 4 et 5 prises simultanément, caractérisé par le fait que le gainage (9) est obtenu lors de la fabrication par moulage de l'organe plongeur (7) par bi-injection d'une matière plastique poreuse et d'une matière plastique imperméable au liquide (L).Device according to claims 4 and 5 taken simultaneously, characterized in that the cladding (9) is obtained during of the molding production of the plunger member (7) by bi-injection porous plastic and waterproof plastic liquid (L). Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que l'organe plongeur (107) est réalisé en un matériau imperméable au liquide (L), son extrémité libre étant fermée par un élément poreux (110).Device according to one of claims 1 to 3, characterized in that the plunger member (107) is made in one liquid impermeable material (L), its free end being closed by a porous element (110). Dispositif selon la revendication 9, caractérisé par le fait que l'élément poreux (110) a la forme d'une cuvette qui s'emboíte par son bord sur l'extrémité libre de l'organe plongeur (107).Device according to claim 9, characterized by causes the porous element (110) to have the shape of a cup which fits by its edge on the free end of the plunger member (107).
EP98400008A 1997-01-07 1998-01-06 Dispensing device of solid particles containing liquid Withdrawn EP0852210A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9700070 1997-01-07
FR9700070A FR2758129A1 (en) 1997-01-07 1997-01-07 DEVICE FOR DISPENSING A LIQUID CONTAINING SOLID PARTICLES

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EP0852210A2 true EP0852210A2 (en) 1998-07-08
EP0852210A3 EP0852210A3 (en) 1999-07-28

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FR (1) FR2758129A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2326302A1 (en) * 2007-10-01 2009-10-06 Douglas Latorre Manrique Product for the salado of foods and device for your dispensation. (Machine-translation by Google Translate, not legally binding)
EP2121462A1 (en) * 2007-02-15 2009-11-25 Cohen, Ben Z. Inlet for pump
US8136704B2 (en) 2006-04-11 2012-03-20 Francis Verdan Device for applying an alum solution to the body
EP1448287B1 (en) * 2001-11-29 2015-01-07 Peter Kwasny GmbH Filter for using in aerosol paint cans

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102352310A (en) * 2011-10-09 2012-02-15 王敬华 Sealed bio-safe microorganism rapid inoculator and matched integrated culture medium

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Publication number Priority date Publication date Assignee Title
US4530450A (en) * 1983-02-07 1985-07-23 American Cyanamid Co. Aerosol dispensing system
US4979638A (en) * 1987-05-14 1990-12-25 Bolduc Lee R Aerosol dispenser with sealed actuator
FR2672038A1 (en) * 1991-01-25 1992-07-31 Oreal Device for dispensing foam from a pressurised container
DE4422190A1 (en) * 1994-06-24 1995-05-04 Adolf Sitterli Re-usable bottle stopper or container stopper with incorporated valve and dispensing device

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Publication number Priority date Publication date Assignee Title
US4530450A (en) * 1983-02-07 1985-07-23 American Cyanamid Co. Aerosol dispensing system
US4979638A (en) * 1987-05-14 1990-12-25 Bolduc Lee R Aerosol dispenser with sealed actuator
FR2672038A1 (en) * 1991-01-25 1992-07-31 Oreal Device for dispensing foam from a pressurised container
DE4422190A1 (en) * 1994-06-24 1995-05-04 Adolf Sitterli Re-usable bottle stopper or container stopper with incorporated valve and dispensing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1448287B1 (en) * 2001-11-29 2015-01-07 Peter Kwasny GmbH Filter for using in aerosol paint cans
US8136704B2 (en) 2006-04-11 2012-03-20 Francis Verdan Device for applying an alum solution to the body
EP2121462A1 (en) * 2007-02-15 2009-11-25 Cohen, Ben Z. Inlet for pump
EP2121462A4 (en) * 2007-02-15 2011-04-13 Cohen Ben Z Inlet for pump
US8556132B2 (en) 2007-02-15 2013-10-15 Ben Z. Cohen Inlet for pump
ES2326302A1 (en) * 2007-10-01 2009-10-06 Douglas Latorre Manrique Product for the salado of foods and device for your dispensation. (Machine-translation by Google Translate, not legally binding)

Also Published As

Publication number Publication date
FR2758129A1 (en) 1998-07-10
EP0852210A3 (en) 1999-07-28

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