EP0613836A1 - Pressurized foam dispenser - Google Patents

Pressurized foam dispenser Download PDF

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Publication number
EP0613836A1
EP0613836A1 EP94400394A EP94400394A EP0613836A1 EP 0613836 A1 EP0613836 A1 EP 0613836A1 EP 94400394 A EP94400394 A EP 94400394A EP 94400394 A EP94400394 A EP 94400394A EP 0613836 A1 EP0613836 A1 EP 0613836A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
chamber
spraying
gas
dispenser
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.)
Granted
Application number
EP94400394A
Other languages
German (de)
French (fr)
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EP0613836B1 (en
Inventor
Patrice Brunerie
Vincent De Laforcade
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.)
LOreal SA
Original Assignee
LOreal SA
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Filing date
Publication date
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Publication of EP0613836A1 publication Critical patent/EP0613836A1/en
Application granted granted Critical
Publication of EP0613836B1 publication Critical patent/EP0613836B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D83/28—Nozzles, nozzle fittings or accessories specially adapted therefor
    • B65D83/30—Nozzles, nozzle fittings or accessories specially adapted therefor for guiding the flow of spray, e.g. funnels, hoods
    • 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
    • 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
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/754—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 comprising filters in the fluid flow path

Definitions

  • the present invention relates to a dispenser for converting a spray into foam.
  • the Applicant has found that by providing the distributor with a nozzle for transforming a spray into foam with dimensional characteristics as described below, said distributor is adapted to supply foam under good conditions.
  • a pressurized foam distributor containing a foaming liquid pressurized by a non-liquefiable compressed gas, equipped with a distribution valve with additional gas intake such that the gas / liquid ratio of the mixture distributed is between 95/5 and 99/1 (vol / vol), is provided with a push button comprising a spraying member and a nozzle, said nozzle comprising a housing defining an accumulation chamber in which the spraying member sprays the product to be dispensed through a spray nozzle opening into said accumulation chamber, said nozzle having a diameter of between 0.7 and 2 mm, said chamber being closed by a porous sinter constituting at least partly a wall of said chamber accumulation opposite to that in which the spray nozzle is provided and located at a distance from the latter of between 0.5 and 5 mm.
  • the sinter has a thickness of between 0.5 and 4 mm, preferably 0.75 mm; the size of the sintered pores is between 10 and 50 microns, preferably between 15 and 25 microns and more particularly of the order of 20 microns.
  • the spraying is carried out under an absolute pressure of between 1.5 and 6 bars, preferably between 3.5 and 6 bars.
  • the non-liquefiable compressed gas is in particular air or nitrogen.
  • the pressure is produced by compressed air under pressure constituting the propellant gas of the product to be dispensed in the form of foam.
  • a dispenser consists of a container 18 having a bottom 28, and closed at its upper part by a metal cup 3, a seal 2 ensuring the tightness of the closure.
  • the container 18 is filled with a liquid to be sprayed, and with a gas under pressure, for example compressed air.
  • a dispensing valve 7 comprises a valve body 6 and an operating rod 1; the valve body 6, of generally cylindrical shape, has at its upper part a bead 6 has a larger diameter than the rest of the body and allowing the body 6 to be held in place by crimping by the metal cup 3.
  • the transverse upper wall of the cup 3 is pierced with a circular orifice 3 has an annular seal 4, placed inside the bead 6 a , is compressed, during crimping, between the upper wall of the cup 3 and an annular bearing 6 b , concentric with the bead 6 a and carried by the valve body 6, extending to the joint 4 the cylindrical inner wall 25 of the body 6;
  • the operating rod 1 comprises two coaxial cylindrical portions 23 and 24, defining a transverse annular surface 17; the portion 23 of the rod 1 has a diameter slightly less than that of the orifice 3 a of the cup 3, while the portion 24 of the rod 1 has a diameter greater than that of the orifice 3 a , while being slightly smaller than the diameter of the inner wall 25 of the body 6.
  • the portion 23 passes through the seal 4 and the orifice 3 a of the upper wall of the cup 3, the portion 24 is in the chamber 10 defined inside the body 6;
  • the body 6 has, at its lower part, an extension 16, of smaller diameter than that of the rest of the body, along the axis of the body 6, and shaped as a nozzle to which a plunger tube 22, made of plastic, is connected, allowing communication between the chamber 10 and the product to be sprayed contained in the container 18, the dip tube 22 plunging to the vicinity of the bottom 28 of said container.
  • radial fins 15, distributed circumferentially, define a planar surface 20 of transverse abutment, serving as a seat for a helical spring 11; the cylindrical portion 24 of the rod 1 is extended, at its lower part, by a tail 21 of smaller diameter so that a transverse surface 19 is defined at the connection of the tail 21 and the portion 24; the spring 11, at its other end, surrounds the tail 21 and rests on the bearing surface 19, thus applying, at rest, the transverse annular bearing surface 17 of the rod 1 against the annular seal 4.
  • a small orifice 8 is formed in the wall of the body 6 and communicates the chamber 10 with the upper volume of the container 18 in which the pressurized gas is located.
  • the second cylindrical portion 24 of the rod 1 has an axial blind passage 14 followed by a radial passage 5 passing through the wall of said second portion 24, said axial 14 and radial 5 passages opening respectively into the chamber 10.
  • a blind axial channel 13 is also provided in the first portion 23 of the rod 1; the channel 13 is, moreover, in communication with the outside of the rod 1 by a radial channel 12 passing through the wall of the first portion 23 of the rod 1; the section of said channel 12 through which it opens to the outside is less than the thickness of the joint 4; in the rest position, as shown in the drawing, the channel 12 opens to the right of the thickness of the seal 4.
  • the dispenser comprises a push button 30; the push button 30 comprises a cylindrical body 31 of circular section having at its lower part a housing 32 allowing the fitting of the portion 23 of the rod 1 to place the push button 30 on the container 18.
  • the body 31 carries a col 33; according to an exemplary embodiment, the neck 33 is inclined relative to the axis longitudinal of the body 31.
  • the body 31 and the neck 33 are crossed by channels 37 and 38, in the extension of one another, the channel 37 opening into the housing 32, and the channel 38 ending in a nozzle 39 spray.
  • the dispenser according to the invention operates as follows. From the rest position, as shown in the figure, a downward action on the push button 30, therefore on the operating rod 1, lowers the latter in the body 6; the radial channel 12 is no longer obstructed by the seal 4. Thus, the liquid to be sprayed is pushed by the gas under pressure from the dip tube 22 towards the chamber 10 and the channels 14, 5, 12, 13, and towards the spray nozzle 39; in parallel, the small orifice 8 communicating the upper part of the container containing the pressurized gas with the chamber 10, pressurized gas is also brought to join the nozzle via the upper part of the chamber 10 and the channels 12 and 13; in fact, it is a mixture of propellant gas and liquid product which is sprayed through the spray nozzle 39; the pressure drop through the additional gas intake that constitutes the small orifice 8 results in a pressure in the chamber 10 lower than the pressure in the container 18, which allows the distribution of the product, from the container, as described below -above.
  • the neck 33 supports a housing 34 defining a chamber 40 for accumulation; according to the example shown, the housing 34 is cylindrical, of circular section, along an axis perpendicular to the longitudinal axis of the container 18.
  • the nozzle 39 opens into the chamber 40 of the housing 34 which, on the side opposite to the nozzle 39, is closed by a pellet 36 of sintered material held by a support cover 35 clipped onto the housing 34.
  • the nozzle having a diameter between 0.7 and 2 mm, and the pellet 36 being at a distance from the nozzle 39 between 0.5 and 5 mm, the spray produced by the valve 7 is distributed in the form of foam at the outlet of the housing 34.
  • Excellent results have been obtained with a sinter having a thickness of between 0.5 and 4 mm, preferably 0.75 mm , the size of the sintered pores being of the order of 20 microns.
  • the dispenser is advantageously pressurized with compressed air, at a pressure of 1.5 to 6 bars, preferably 3.5 to 6 bars; the section of the orifice 8 is such that the spray produced in the housing 34 contains by volume 95 to 99% of air.
  • the air is replaced by another non-liquefiable compressed gas such as nitrogen.
  • the housing 34 and the push button 30 are in one piece; alternatively, the housing 34 is attached to the conventional button 30 provided.
  • the bottom 28 of the container 18 has a connector 26 provided with a valve 27, for example of the ball valve type, allowing the entry of pressurized gas into the container 18, but opposing its exit.
  • This connector 26 allows connection to a source of pressurized gas, in particular the outlet of a compressor (not shown), which allows the container 18 to be recharged with pressurized gas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Nozzles (AREA)

Abstract

Pressurised-foam dispenser containing a foaming liquid pressurised by a non-liquefiable compressed gas, equipped with a dispensing valve (7) having an additional gas connector (tap, take-off) (8) such that the gas/liquid ratio of the mixture dispensed is between 95/5 and 99/1 (vol/vol), the said dispenser being equipped with a push button (30) including a spraying member and an end piece, the said end piece comprising a casing (34) defining an accumulation chamber (40) in which the spraying member sprays the product to be dispensed through a spraying nozzle (39) emerging in the said accumulation chamber (40), the said nozzle (39) having a diameter between 0.7 and 2 mm in diameter, the said chamber (40) being closed by a porous sinter (36) constituting at least partially a wall of the said accumulation chamber (40) opposite that in which the spraying nozzle (39) is provided and located at a distance from the latter of between 0.5 and 5 mm. <IMAGE>

Description

La présente invention a pour objet un distributeur pour transformer une pulvérisation en mousse.The present invention relates to a dispenser for converting a spray into foam.

On a déjà proposé un élément destiné à être utilisé avec un distributeur de liquide qui donne au produit à distribuer la forme d'une mousse plutôt que celle d'une pulvérisation ou d'un brouillard ; c'est le cas, par exemple, du distributeur de mousse décrit dans FR-A-2 361 933. L'élément décrit dans ce document prévoit, pour la production de la mousse, d'utiliser l'air de diverses manières qui dépendent en particulier de la quantité d'air déjà présente dans le produit liquide provenant du distributeur ; ainsi, l'élément doit être adapté au distributeur, et notamment présenter ou non des évents permettant l'introduction d'air extérieur dans une chambre dite d'aération.An element has already been proposed for use with a liquid dispenser which gives the product to be dispensed in the form of a foam rather than that of a spray or a mist; this is the case, for example, of the foam dispenser described in FR-A-2 361 933. The element described in this document provides, for the production of foam, to use air in various ways which depend in particular the amount of air already present in the liquid product coming from the distributor; thus, the element must be adapted to the distributor, and in particular present or not vents allowing the introduction of outside air into a so-called aeration chamber.

La demanderesse a constaté qu'en dotant le distributeur d'un embout pour transformer une pulvérisation en mousse de caractéristiques dimensionnelles telles que décrites ci-après, ledit distributeur est adapté à fournir de la mousse dans de bonnes conditions.The Applicant has found that by providing the distributor with a nozzle for transforming a spray into foam with dimensional characteristics as described below, said distributor is adapted to supply foam under good conditions.

Ainsi, selon l'invention, un distributeur de mousse sous pression contenant un liquide moussant préssurisé par un gaz comprimé non liquéfiable, équipé d'une valve de distribution à prise de gaz additionnelle telle que le rapport gaz/liquide du mélange distribué est compris entre 95/5 et 99/1 (vol/vol), est muni d'un bouton-poussoir comportant un organe de pulvérisation et un embout, ledit embout comprenant un boîtier définissant une chambre d'accumulation dans laquelle l'organe de pulvérisation pulvérise le produit à distribuer à travers une buse de pulvérisation débouchant dans ladite chambre d'accumulation, ladite buse ayant un diamètre compris entre 0,7 et 2 mm, ladite chambre étant fermée par un fritté poreux constituant au moins en partie une paroi de ladite chambre d'accumulation opposée à celle dans laquelle est ménagée la buse de pulvérisation et située à une distance de celle-ci comprise entre 0,5 et 5 mm.Thus, according to the invention, a pressurized foam distributor containing a foaming liquid pressurized by a non-liquefiable compressed gas, equipped with a distribution valve with additional gas intake such that the gas / liquid ratio of the mixture distributed is between 95/5 and 99/1 (vol / vol), is provided with a push button comprising a spraying member and a nozzle, said nozzle comprising a housing defining an accumulation chamber in which the spraying member sprays the product to be dispensed through a spray nozzle opening into said accumulation chamber, said nozzle having a diameter of between 0.7 and 2 mm, said chamber being closed by a porous sinter constituting at least partly a wall of said chamber accumulation opposite to that in which the spray nozzle is provided and located at a distance from the latter of between 0.5 and 5 mm.

Avantageusement, le fritté a une épaisseur comprise entre 0,5 et 4 mm, de préférence 0,75 mm ; la taille des pores du fritté est comprise entre 10 et 50 microns, de préférence entre 15 et 25 microns et plus particulièrement de l'ordre de 20 microns.Advantageously, the sinter has a thickness of between 0.5 and 4 mm, preferably 0.75 mm; the size of the sintered pores is between 10 and 50 microns, preferably between 15 and 25 microns and more particularly of the order of 20 microns.

De préférence, la pulvérisation est réalisée sous une pression absolue comprise entre 1,5 et 6 bars, de préférence entre 3,5 et 6 bars.Preferably, the spraying is carried out under an absolute pressure of between 1.5 and 6 bars, preferably between 3.5 and 6 bars.

Le gaz comprimé non liquéfiable est notamment de l'air ou de l'azote.The non-liquefiable compressed gas is in particular air or nitrogen.

Avantageusement, la pression est réalisée par de l'air comprimé sous pression constituant le gaz propulseur du produit à distribuer sous forme de mousse.Advantageously, the pressure is produced by compressed air under pressure constituting the propellant gas of the product to be dispensed in the form of foam.

Pour mieux faire comprendre l'objet de l'invention, on va en décrire maintenant, à titre d'exemple purement illustratif et non limitatif, un mode de réalisation représenté, sur le dessin annexé, en coupe partielle.To better understand the object of the invention, we will now describe, by way of purely illustrative and nonlimiting example, an embodiment shown in the accompanying drawing, in partial section.

Selon ce dessin, un distributeur est constitué d'un récipient 18 ayant un fond 28, et fermé à sa partie supérieure par une coupelle métallique 3, un joint 2 assurant l'étanchéité de la fermeture. Le récipient 18 est rempli d'un liquide à pulvériser, et d'un gaz sous pression, par exemple de l'air comprimé. Une valve de distribution 7 comprend un corps de valve 6 et une tige de manoeuvre 1 ; le corps de valve 6, de forme générale cylindrique, présente à sa partie supérieure un bourrelet 6a de plus grand diamètre que le reste du corps et permettant le maintien du corps 6 par sertissage par la coupelle métallique 3. La paroi supérieure transversale de la coupelle 3 est percée d'un orifice circulaire 3a un joint annulaire 4, placé à l'intérieur du bourrelet 6a, est comprimé, lors du sertissage, entre la paroi supérieure de la coupelle 3 et une portée annulaire 6b, concentrique au bourrelet 6a et portée par le corps de valve 6, prolongeant jusqu'au joint 4 la paroi intérieure cylindrique 25 du corps 6 ; la tige de manoeuvre 1 comprend deux portions cylindriques coaxiales 23 et 24, définissant une portée annulaire transversale 17 ; la portion 23 de la tige 1 a un diamètre légèrement inférieur à celui de l'orifice 3a de la coupelle 3, tandis que la portion 24 de la tige 1 a un diamètre supérieur à celui de l'orifice 3a, tout en étant légèrement inférieur au diamètre de la paroi intérieure 25 du corps 6. Lorsque la tige de manoeuvre 1 est montée sur le corps 6, la portion 23 traverse le joint 4 et l'orifice 3a de la paroi supérieure de la coupelle 3, la portion 24 est dans la chambre 10 définie à l'intérieur du corps 6 ; le corps 6 présente, à sa partie inférieure, un prolongement 16, de plus petit diamètre que celui du reste du corps, selon l'axe du corps 6, et conformé en embout sur lequel est raccordé un tube plongeur 22, en matière plastique, permettant la communication entre la chambre 10 et le produit à pulvériser contenu dans le récipient 18, le tube plongeur 22 plongeant jusqu'au voisinage du fond 28 dudit récipient. A l'intérieur du corps 6, au voisinage du fond de la chambre 10, des ailettes radiales 15, réparties circonférentiellement, définissent une surface plane 20 de butée transversale, servant de siège à un ressort hélicoïdal 11 ; la portion cylindrique 24 de la tige 1 se prolonge, à sa partie inférieure, par une queue 21 de plus petit diamètre de sorte qu'une portée transversale 19 est définie au raccordement de la queue 21 et de la portion 24 ; le ressort 11, à son autre extrémité, entoure la queue 21 et s'appuie sur la portée 19, appliquant ainsi, au repos, la portée annulaire transversale 17 de la tige 1 contre le joint annulaire 4.According to this drawing, a dispenser consists of a container 18 having a bottom 28, and closed at its upper part by a metal cup 3, a seal 2 ensuring the tightness of the closure. The container 18 is filled with a liquid to be sprayed, and with a gas under pressure, for example compressed air. A dispensing valve 7 comprises a valve body 6 and an operating rod 1; the valve body 6, of generally cylindrical shape, has at its upper part a bead 6 has a larger diameter than the rest of the body and allowing the body 6 to be held in place by crimping by the metal cup 3. The transverse upper wall of the cup 3 is pierced with a circular orifice 3 has an annular seal 4, placed inside the bead 6 a , is compressed, during crimping, between the upper wall of the cup 3 and an annular bearing 6 b , concentric with the bead 6 a and carried by the valve body 6, extending to the joint 4 the cylindrical inner wall 25 of the body 6; the operating rod 1 comprises two coaxial cylindrical portions 23 and 24, defining a transverse annular surface 17; the portion 23 of the rod 1 has a diameter slightly less than that of the orifice 3 a of the cup 3, while the portion 24 of the rod 1 has a diameter greater than that of the orifice 3 a , while being slightly smaller than the diameter of the inner wall 25 of the body 6. When the operating rod 1 is mounted on the body 6, the portion 23 passes through the seal 4 and the orifice 3 a of the upper wall of the cup 3, the portion 24 is in the chamber 10 defined inside the body 6; the body 6 has, at its lower part, an extension 16, of smaller diameter than that of the rest of the body, along the axis of the body 6, and shaped as a nozzle to which a plunger tube 22, made of plastic, is connected, allowing communication between the chamber 10 and the product to be sprayed contained in the container 18, the dip tube 22 plunging to the vicinity of the bottom 28 of said container. Inside the body 6, in the vicinity of the bottom of the chamber 10, radial fins 15, distributed circumferentially, define a planar surface 20 of transverse abutment, serving as a seat for a helical spring 11; the cylindrical portion 24 of the rod 1 is extended, at its lower part, by a tail 21 of smaller diameter so that a transverse surface 19 is defined at the connection of the tail 21 and the portion 24; the spring 11, at its other end, surrounds the tail 21 and rests on the bearing surface 19, thus applying, at rest, the transverse annular bearing surface 17 of the rod 1 against the annular seal 4.

Un petit orifice 8 est ménagé dans la paroi du corps 6 et fait communiquer la chambre 10 avec le volume supérieur du récipient 18 dans lequel se trouve le gaz sous pression.A small orifice 8 is formed in the wall of the body 6 and communicates the chamber 10 with the upper volume of the container 18 in which the pressurized gas is located.

La deuxième portion cylindrique 24 de la tige 1 présente un passage borgne axial 14 suivi d'un passage radial 5 traversant la paroi de ladite deuxième portion 24, lesdits passages axial 14 et radial 5 débouchant respectivement dans la chambre 10. Un canal axial borgne 13 est également ménagé dans la première portion 23 de la tige 1 ; le canal 13 est, par ailleurs, en communication avec l'extérieur de la tige 1 par un canal radial 12 traversant la paroi de la première portion 23 de la tige 1; la section dudit canal 12 par laquelle il débouche à l'extérieur est inférieure à l'épaisseur du joint 4 ; dans la position de repos, comme montré sur le dessin, le canal 12 débouche au droit de l'épaisseur du joint 4.The second cylindrical portion 24 of the rod 1 has an axial blind passage 14 followed by a radial passage 5 passing through the wall of said second portion 24, said axial 14 and radial 5 passages opening respectively into the chamber 10. A blind axial channel 13 is also provided in the first portion 23 of the rod 1; the channel 13 is, moreover, in communication with the outside of the rod 1 by a radial channel 12 passing through the wall of the first portion 23 of the rod 1; the section of said channel 12 through which it opens to the outside is less than the thickness of the joint 4; in the rest position, as shown in the drawing, the channel 12 opens to the right of the thickness of the seal 4.

Le distributeur comprend un bouton-poussoir 30 ; le bouton-poussoir 30 comprend un corps cylindrique 31 de section circulaire présentant à sa partie inférieure un logement 32 permettant l'emmanchement de la portion 23 de la tige 1 pour placer le bouton-poussoir 30 sur le récipient 18. Le corps 31 porte un col 33 ; selon un exemple de réalisation, le col 33 est incliné par rapport à l'axe longitudinal du corps 31. Le corps 31 et le col 33 sont traversés par des canaux 37 et 38, dans le prolongement l'un de l'autre, le canal 37 débouchant dans le logement 32, et le canal 38 se terminant par une buse 39 de pulvérisation.The dispenser comprises a push button 30; the push button 30 comprises a cylindrical body 31 of circular section having at its lower part a housing 32 allowing the fitting of the portion 23 of the rod 1 to place the push button 30 on the container 18. The body 31 carries a col 33; according to an exemplary embodiment, the neck 33 is inclined relative to the axis longitudinal of the body 31. The body 31 and the neck 33 are crossed by channels 37 and 38, in the extension of one another, the channel 37 opening into the housing 32, and the channel 38 ending in a nozzle 39 spray.

Le distributeur, selon l'invention, fonctionne comme suit. A partir de la position de repos, telle que représentée sur la figure, une action vers le bas sur le bouton-poussoir 30, donc sur la tige de manoeuvre 1, fait descendre celle-ci dans le corps 6 ; le canal radial 12 n'est plus obstrué par le joint 4. Ainsi, le liquide à pulvériser est poussé par le gaz sous pression depuis le tube plongeur 22 vers la chambre 10 et les canaux 14, 5, 12, 13, et vers la buse de pulvérisation 39 ; parallèlement, le petit orifice 8 faisant communiquer la partie haute du récipient contenant le gaz sous pression avec la chambre 10, du gaz sous pression est amené également à rejoindre la buse via la partie supérieure de la chambre 10 et les canaux 12 et 13 ; en fait, c'est un mélange de gaz propulseur et de produit liquide qui est pulvérisé à travers la buse de pulvérisation 39 ; la perte de charge à travers la prise de gaz additionnelle que constitue le petit orifice 8 a pour résultat une pression dans la chambre 10 inférieure à la pression dans le récipient 18, ce qui permet la distribution du produit, depuis le récipient, comme décrit ci-dessus.The dispenser according to the invention operates as follows. From the rest position, as shown in the figure, a downward action on the push button 30, therefore on the operating rod 1, lowers the latter in the body 6; the radial channel 12 is no longer obstructed by the seal 4. Thus, the liquid to be sprayed is pushed by the gas under pressure from the dip tube 22 towards the chamber 10 and the channels 14, 5, 12, 13, and towards the spray nozzle 39; in parallel, the small orifice 8 communicating the upper part of the container containing the pressurized gas with the chamber 10, pressurized gas is also brought to join the nozzle via the upper part of the chamber 10 and the channels 12 and 13; in fact, it is a mixture of propellant gas and liquid product which is sprayed through the spray nozzle 39; the pressure drop through the additional gas intake that constitutes the small orifice 8 results in a pressure in the chamber 10 lower than the pressure in the container 18, which allows the distribution of the product, from the container, as described below -above.

Lorsque l'action sur la tige de manoeuvre 1 cesse, le ressort 11 repousse la tige 1 dans la position où la portée 17 est en contact avec le joint 4, et le canal 12 au droit de ce joint 4.When the action on the operating rod 1 ceases, the spring 11 pushes the rod 1 back into the position where the bearing surface 17 is in contact with the seal 4, and the channel 12 in line with this seal 4.

Selon l'invention, le col 33 supporte un boîtier 34 définissant une chambre 40 d'accumulation ; selon l'exemple représenté, le boîtier 34 est cylindrique, à section circulaire, selon un axe perpendiculaire à l'axe longitudinal du récipient 18. La buse 39 débouche dans la chambre 40 du boîtier 34 qui, du côté opposé à la buse 39, est fermé par une pastille 36 en matériau fritté maintenue par un cache-support 35 clipsé sur le boîtier 34. Ainsi, lors d'une action sur le bouton-poussoir 30, comme décrit ci-dessus, une pulvérisation fine du produit est admise dans le boîtier 34, à travers la buse 39, générée par l'organe de pulvérisation constitué par la valve 7.According to the invention, the neck 33 supports a housing 34 defining a chamber 40 for accumulation; according to the example shown, the housing 34 is cylindrical, of circular section, along an axis perpendicular to the longitudinal axis of the container 18. The nozzle 39 opens into the chamber 40 of the housing 34 which, on the side opposite to the nozzle 39, is closed by a pellet 36 of sintered material held by a support cover 35 clipped onto the housing 34. Thus, during an action on the push button 30, as described above, a fine spraying of the product is allowed in the housing 34, through the nozzle 39, generated by the spraying member constituted by the valve 7.

La buse ayant un diamètre compris entre 0,7 et 2 mm, et la pastille 36 étant à une distance de la buse 39 comprise entre 0,5 et 5 mm, la pulvérisation produite par la valve 7 est distribuée sous forme de mousse à la sortie du boîtier 34. D'excellents résultats ont été obtenus avec un fritté ayant une épaisseur comprise entre 0,5 et 4 mm, de préférence 0,75 mm, la taille des pores du fritté étant de l'ordre de 20 microns. Le distributeur est avantageusement pressurisé à l'air comprimé, sous une pression de 1,5 à 6 bars, de préférence 3,5 à 6 bars ; la section de l'orifice 8 est telle que la pulvérisation produite dans le boîtier 34 contient en volume 95 à 99 % d'air.The nozzle having a diameter between 0.7 and 2 mm, and the pellet 36 being at a distance from the nozzle 39 between 0.5 and 5 mm, the spray produced by the valve 7 is distributed in the form of foam at the outlet of the housing 34. Excellent results have been obtained with a sinter having a thickness of between 0.5 and 4 mm, preferably 0.75 mm , the size of the sintered pores being of the order of 20 microns. The dispenser is advantageously pressurized with compressed air, at a pressure of 1.5 to 6 bars, preferably 3.5 to 6 bars; the section of the orifice 8 is such that the spray produced in the housing 34 contains by volume 95 to 99% of air.

En variante, l'air est remplacé par un autre gaz comprimé non liquéfiable tel que l'azote.As a variant, the air is replaced by another non-liquefiable compressed gas such as nitrogen.

Dans l'exemple représenté, le boîtier 34 et le bouton-poussoir 30 sont d'une seule pièce ; en variante, le boîtier 34 est rapporté sur le bouton-poussoir 30 prévu classique.In the example shown, the housing 34 and the push button 30 are in one piece; alternatively, the housing 34 is attached to the conventional button 30 provided.

Le fond 28 du récipient 18 comporte un raccord 26 muni d'un clapet 27, par exemple du type clapet à bille, permettant l'entrée du gaz sous pression dans le récipient 18, mais s'opposant à sa sortie. Ce raccord 26 permet un branchement sur une source de gaz sous pression, en particulier la sortie d'un compresseur (non représenté), qui permet de recharger le récipient 18 en gaz sous pression.The bottom 28 of the container 18 has a connector 26 provided with a valve 27, for example of the ball valve type, allowing the entry of pressurized gas into the container 18, but opposing its exit. This connector 26 allows connection to a source of pressurized gas, in particular the outlet of a compressor (not shown), which allows the container 18 to be recharged with pressurized gas.

Claims (8)

1 - Distributeur de mousse sous pression contenant un liquide moussant préssurisé par un gaz comprimé non liquéfiable, équipé d'une valve de distribution (7) à prise de gaz (8) additionnelle telle que le rapport gaz/liquide du mélange distribué est compris entre 95/5 et 99/1 (vol/vol), ledit distributeur étant muni d'un bouton-poussoir (30) comportant un organe de pulvérisation et un embout, ledit embout comprenant un boîtier (34) définissant une chambre d'accumulation (40) dans laquelle l'organe de pulvérisation pulvérise le produit à distribuer à travers une buse (39) de pulvérisation débouchant dans ladite chambre (40) d'accumulation, ladite buse (39) ayant un diamètre compris entre 0,7 et 2 mm, ladite chambre (40) étant fermée par un fritté poreux (36) constituant au moins en partie une paroi de ladite chambre (40) d'accumulation opposée à celle dans laquelle est ménagée la buse (39) de pulvérisation et située à une distance de celle-ci comprise entre 0,5 et 5 mm. 1 - Pressure foam dispenser containing a foaming liquid pressurized by a non-liquefiable compressed gas, equipped with a distribution valve (7) with additional gas intake (8) such that the gas / liquid ratio of the mixture distributed is between 95/5 and 99/1 (vol / vol), said distributor being provided with a push button (30) comprising a spraying member and a nozzle, said nozzle comprising a housing (34) defining a storage chamber ( 40) in which the spraying member sprays the product to be dispensed through a spray nozzle (39) opening into said accumulation chamber (40), said nozzle (39) having a diameter of between 0.7 and 2 mm , said chamber (40) being closed by a porous frit (36) constituting at least partially a wall of said accumulation chamber (40) opposite to that in which the spray nozzle (39) is formed and located at a distance of it between 0.5 and 5 mm. 2 - Distributeur selon la revendication 1, caractérisé par le fait que le fritté (36) a une épaisseur comprise entre 0,5 et 4 mm, de préférence 0,75 mm. 2 - Distributor according to claim 1, characterized in that the frit (36) has a thickness between 0.5 and 4 mm, preferably 0.75 mm. 3 - Distributeur selon la revendication 2, caractérisé par le fait que la taille des pores du fritté (36) est comprise entre 10 et 50 microns. 3 - Dispenser according to claim 2, characterized in that the size of the sintered pores (36) is between 10 and 50 microns. 4 - Distributeur selon la revendication 3, caractérisé par le fait que la taille des pores du fritté (36) est comprise entre 15 et 25 microns. 4 - A dispenser according to claim 3, characterized in that the size of the sintered pores (36) is between 15 and 25 microns. 5 - Distributeur selon la revendication 4, caractérisé par le fait que la taille des pores du fritté (36) est de l'ordre de 20 microns. 5 - A dispenser according to claim 4, characterized in that the size of the sintered pores (36) is of the order of 20 microns. 6 - Distributeur selon l'une des revendications 1 à 5, caractérisé par le fait que la pulvérisation est réalisée sous une pression absolue comprise entre 1,5 et 6 bars. 6 - Distributor according to one of claims 1 to 5, characterized in that the spraying is carried out under an absolute pressure between 1.5 and 6 bars. 7 - Distributeur selon la revendication 6, caractérisé par le fait que la pulvérisation est réalisée sous une pression absolue comprise entre 3,5 et 6 bars. 7 - A dispenser according to claim 6, characterized in that the spraying is carried out under an absolute pressure between 3.5 and 6 bars. 8 - Distributeur selon la revendication 6, caractérisé par le fait que la pression est réalisée par de l'air comprimé sous pression constituant le gaz propulseur du produit à distribuer sous forme de mousse. 8 - Distributor according to claim 6, characterized in that the pressure is produced by compressed air under pressure constituting the propellant gas of the product to be dispensed in the form of foam.
EP94400394A 1993-03-05 1994-02-24 Pressurized foam dispenser Expired - Lifetime EP0613836B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9302575A FR2702196B1 (en) 1993-03-05 1993-03-05 Pressure foam dispenser.
FR9302575 1993-03-05

Publications (2)

Publication Number Publication Date
EP0613836A1 true EP0613836A1 (en) 1994-09-07
EP0613836B1 EP0613836B1 (en) 1996-10-23

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EP94400394A Expired - Lifetime EP0613836B1 (en) 1993-03-05 1994-02-24 Pressurized foam dispenser

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US (1) US5368231A (en)
EP (1) EP0613836B1 (en)
DE (1) DE69400767T2 (en)
ES (1) ES2093493T3 (en)
FR (1) FR2702196B1 (en)

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WO2002041872A1 (en) 2000-11-24 2002-05-30 Btg International Limited Generation of therapeutic microfoam
EP1878507A2 (en) * 2006-07-10 2008-01-16 Rexam Dispensing Systems Spraying device and use of same
US8048439B2 (en) 2003-11-17 2011-11-01 Btg International Ltd. Therapeutic foam
US8091801B2 (en) 1999-05-26 2012-01-10 Btg International Limited Generation of therapeutic microfoam
CN102971231A (en) * 2010-05-05 2013-03-13 荷兰联合利华有限公司 Actuator for an aerosol container
US8512680B2 (en) 2001-08-08 2013-08-20 Btg International Ltd. Injectables in foam, new pharmaceutical applications
US8703827B2 (en) 2005-05-13 2014-04-22 Btg International Ltd. Therapeutic foam
US8978937B2 (en) 2010-05-05 2015-03-17 Conopco Inc. Actuator for an aerosol container

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GB0321210D0 (en) * 2003-09-10 2003-10-08 Btg Int Ltd Apparatus and method for dispensing foam
JP2007511590A (en) * 2003-11-17 2007-05-10 ビーティージー・インターナショナル・リミテッド Therapeutic form
US7571841B2 (en) * 2004-04-19 2009-08-11 Illinois Tool Works, Inc. Interchangeable adapter for in-can and on-can fuel cells
US7392922B2 (en) * 2004-04-19 2008-07-01 Illinois Tool Works Inc. In-can fuel cell metering valve
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US11285277B2 (en) * 2014-03-31 2022-03-29 Boehringer Ingelheim Vetmedica Gmbh Inhaler
EP3125821B1 (en) 2014-03-31 2023-06-07 Boehringer Ingelheim Vetmedica GmbH Insert for an inhaler
US9758295B2 (en) * 2015-06-25 2017-09-12 The Gillette Company Compressible valve for a pressurized container
US10166666B2 (en) 2015-11-25 2019-01-01 Illinois Tool Works Inc. Adapter for combustion tool fuel cells
EP3513880B1 (en) 2018-01-23 2021-08-25 The Procter & Gamble Company Dispensing device suitable for a foamable product
US11267644B2 (en) * 2018-11-08 2022-03-08 The Procter And Gamble Company Aerosol foam dispenser and methods for delivering a textured foam product

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US8091801B2 (en) 1999-05-26 2012-01-10 Btg International Limited Generation of therapeutic microfoam
US7842282B2 (en) 2000-11-24 2010-11-30 Btg International Limited Generation of therapeutic microfoam
WO2002041872A1 (en) 2000-11-24 2002-05-30 Btg International Limited Generation of therapeutic microfoam
US7842283B2 (en) 2000-11-24 2010-11-30 Btg International Limited Generation of therapeutic microfoam
EP1337238B2 (en) † 2000-11-24 2017-01-25 BTG International Limited Generation of therapeutic microfoam
US8512680B2 (en) 2001-08-08 2013-08-20 Btg International Ltd. Injectables in foam, new pharmaceutical applications
US8048439B2 (en) 2003-11-17 2011-11-01 Btg International Ltd. Therapeutic foam
US8703827B2 (en) 2005-05-13 2014-04-22 Btg International Ltd. Therapeutic foam
EP1878507A2 (en) * 2006-07-10 2008-01-16 Rexam Dispensing Systems Spraying device and use of same
EP1878507A3 (en) * 2006-07-10 2010-03-03 Rexam Dispensing Systems Spraying device and use of same
EP1878507B1 (en) 2006-07-10 2017-09-06 Albéa le Tréport Spraying device and use of same
EP3246096A1 (en) * 2006-07-10 2017-11-22 Albéa le Tréport Spraying device and use of same
CN102971231A (en) * 2010-05-05 2013-03-13 荷兰联合利华有限公司 Actuator for an aerosol container
US8978937B2 (en) 2010-05-05 2015-03-17 Conopco Inc. Actuator for an aerosol container
CN102971231B (en) * 2010-05-05 2015-08-26 荷兰联合利华有限公司 For the actuator of aerosol container

Also Published As

Publication number Publication date
DE69400767T2 (en) 1997-02-27
FR2702196A1 (en) 1994-09-09
FR2702196B1 (en) 1995-05-12
ES2093493T3 (en) 1996-12-16
DE69400767D1 (en) 1996-11-28
EP0613836B1 (en) 1996-10-23
US5368231A (en) 1994-11-29

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