EP1878507B1 - Spraying device and use of same - Google Patents

Spraying device and use of same Download PDF

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Publication number
EP1878507B1
EP1878507B1 EP07111772.5A EP07111772A EP1878507B1 EP 1878507 B1 EP1878507 B1 EP 1878507B1 EP 07111772 A EP07111772 A EP 07111772A EP 1878507 B1 EP1878507 B1 EP 1878507B1
Authority
EP
European Patent Office
Prior art keywords
holes
spray device
front wall
nozzle
diameters
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.)
Active
Application number
EP07111772.5A
Other languages
German (de)
French (fr)
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EP1878507A2 (en
EP1878507A3 (en
EP1878507B2 (en
Inventor
Bernard Clerget
Jean-Pierre Songbe
Pierre Dumont
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.)
Silgan Dispensing Systems Le Treport SAS
Original Assignee
Albea Le Treport SAS
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Priority claimed from FR0606259A external-priority patent/FR2903328B1/en
Application filed by Albea Le Treport SAS filed Critical Albea Le Treport SAS
Priority to EP17175982.2A priority Critical patent/EP3246096B1/en
Publication of EP1878507A2 publication Critical patent/EP1878507A2/en
Publication of EP1878507A3 publication Critical patent/EP1878507A3/en
Publication of EP1878507B1 publication Critical patent/EP1878507B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18—Roses; Shower heads
    • B05B1/185—Roses; Shower heads characterised by their outlet element; Mounting arrangements therefor
    • 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
    • B65D83/753—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by details or accessories associated with outlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle

Definitions

  • the present invention relates to a spraying device and to a use of this device.
  • the invention relates to a manual spray device according to claim 1.
  • the document US-A-6,145,712 describes an example of such a spraying device, wherein the front face of the spray nozzle has a single central hole.
  • the document WO03 / 02436 shows a high-pressure spraying device, up to 500 bar, and provides a pusher movable perpendicularly to the axis of the reservoir to move a locking member and release the movement of a nozzle along the axis of the reservoir under the action of a spring.
  • the document EP1698399 describes a spray nozzle whose front wall is curved and has holes diverging relative to each other.
  • the document EP613836 shows a pore-filled wall on a housing away from the pusher.
  • the document WO02 / 01981 discloses a hollow projection extending from the pusher and having holes extending transversely of the projection.
  • the document JP2002186882 shows a spray nozzle whose front wall has openings of various shapes, including holes. The features of the preamble of claim 1 are known from this document.
  • the spray nozzles which are conventionally mounted on pumps or spray valves, have the disadvantage of causing a large dispersion of the diameter of the sprayed fluid droplets.
  • the fractionation of the fluid product in fine droplets is obtained by a dynamic phenomenon that is particularly difficult to control, generally consisting in creating a vortex in the inner chamber of the nozzle and in splitting the fluid product in fine droplets when it leaves at very high speed through the central hole.
  • the pulverized product consists of droplets having diameters of between 5 ⁇ m and 300 ⁇ m.
  • This dispersion may be undesirable when it is desired to spray droplets of substantially homogeneous sizes.
  • droplets of very different sizes follow very different paths, which is detrimental to a controlled application of the sprayed product. For example, when spraying a perfume onto a user's skin, too large droplets may fall on the wearer's clothing instead of being thrown onto the skin, causing indelible stains. .
  • the present invention is intended to overcome these disadvantages.
  • the invention provides a manual spray device according to claim 1.
  • the term diameter does not necessarily imply that this section is circular.
  • the holes of the end face could optionally have a polygonal section, for example square, without departing from the scope of the present invention.
  • the aforementioned diameter would be the equivalent diameter of the hole, that is to say the diameter of a circular hole having a section of the same surface as the polygonal hole. If the holes are not of constant section along their length, the diameter in question is the diameter of the minimum section of the holes.
  • the aforementioned provisions also make it possible to overcome at least partially the pressure differences with which the fluid product is fed into the interior chamber of the spray nozzle, since experience shows that the size of the droplets obtained thanks to the The present invention is not very dependent on this pressure (the pressure differences in question may arise, for example, from differences in the operating force of a user if the fluid product is fed by means of a hand pump, or when the fluid product is fed through a valve from a pressure vessel, the pressure differences in question may be due to the fact that the tank has already been partially emptied by previous uses of the spray device).
  • the invention aims to improve the control of the shape of the aerosol obtained at the outlet of the spray nozzle while allowing a simplified embodiment of the calibrated holes.
  • the front wall is elastically deformable between a state of rest, in which said front wall is flat, and an actuation state when the fluid product under pressure is transferred into the inner chamber, wherein said front wall has a convexity facing outwards.
  • the holes can be made in a simple manner in the flat front wall, each hole possibly having an axis which extends in a plane parallel to a central axis perpendicular to the front wall.
  • the axes of the holes deviate from the central axis so as to have an outward divergence and the fluid can be sprayed in the form of an aerosol having a high opening angle.
  • the invention aims to improve the control of the distribution of droplets and the shape of the aerosol.
  • the holes in the end wall are distributed around a center, each hole extends along an axis inclined relative to the normal to said front wall at the said hole, said axis and said normal defining a plane substantially tangential to a circle centered on said central point and passing through the hole, and the axes of all the holes having an inclination with respect to the corresponding normal, and said axes of all the holes being inclined in the direction of the same angular direction about said central point so as to generate a swirling aerosol when fluid is sprayed by said nozzle.
  • the aerosol can have, in the vicinity of the spray nozzle, a first substantially conical portion having a high opening angle and a second portion substantially symmetrical with respect to the central axis of the nozzle.
  • the invention also relates to a use of a spraying device as defined above, for spraying a non-gaseous fluid product.
  • the figure 1 represents a spraying device 1 suitable for spraying a non-gaseous fluid product 2 contained in a reservoir 3.
  • the fluid product in question may be a liquid or semi-liquid product, for example a pharmaceutical product, a cosmetic product or a perfumery product Or other.
  • the dynamic viscosity of the fluid product 2 is generally less than 50 cps (centipoise) at 20 deg. vs.
  • the spraying device 1 further comprises a dispensing device 4 which is fixed in known manner to a neck 5 of the reservoir 3 at the upper end of said reservoir.
  • the dispensing device 4 may for example be a manual spray pump or a spray valve, in which case the tank 3 is under pressure.
  • the dispensing device 4 comprises a fluid inlet 6 downwardly, which communicates with the bottom of the tank 3 through a dip tube 7, and a hollow actuating rod 8 which protrudes upwards.
  • a push button 9 is fitted at the upper end of the actuating rod 8, and serves both to actuate the dispensing device 4 and to the outlet of the sprayed fluid, which exit is effected through the actuating rod 8, according to the arrow 10 shown on the figure 2 .
  • the distribution device represented in figure 1 could, alternatively, be used in the inverted position, that is to say the bottom of the tank 3 facing upwards.
  • the dispensing device 4 would not include a dip tube 7.
  • the pusher 9 may for example be molded in one piece of plastic material, in particular a polyolefin, for example polypropylene or other.
  • the pusher 9 comprises a substantially horizontal upper wall 11 and a substantially cylindrical and vertical skirt 12, which extends from the periphery of the upper wall 11.
  • the pusher 9 further comprises a central well 13 which extends vertically downwards from the upper wall 11, in the center of the side wall 12.
  • the upper end of the actuating rod 8 is nested in the central well 13.
  • a lateral passage 14 which communicates with a nozzle receiving housing 15 of substantially cylindrical shape, extending substantially horizontally along a central axis X and opening towards the outside of the pusher 9.
  • the side wall 18 of the spraying nozzle 16 may comprise, at its end opposite to the end wall 17, an annular gaudron 19 projecting radially outwards and which penetrates into the material of the pusher 9 to anchor the spray nozzle 16 in the nozzle housing 15.
  • the spray nozzle 16 delimits, with the pusher 9, an inner chamber 20 which communicates with the aforementioned passage 14 and which receives the fluid to be sprayed upon actuation of the dispensing device 4.
  • the pusher 9 may comprise a core 21 which protrudes inside the side wall 18 of the spray nozzle to limit the volume of this inner chamber 20.
  • the front wall 17 of the spray nozzle has a plurality of holes 22 which are distributed on the surface of said end face.
  • the holes 22 may be 10 to 1000 for example.
  • the diameter of each hole 22 is generally between 1 and 100 ⁇ m, all the holes 22 being of substantially the same diameter
  • the diameter of each hole 22 does not differ from the average value of the diameters of the different holes 22 by more than 20% and, advantageously, the diameter of each hole 22 does not differ from said average value by more than 10%.
  • the holes 22 may be substantially cylindrical in shape with a circular cross-section, but they could possibly have a polygonal section, for example square, in which case the aforementioned diameter would be the equivalent diameter of the hole, that is to say the diameter of a circular hole having a section of the same surface as the polygonal hole.
  • the front wall 17 may have a convex shape of concavity turned inwards, as in the example shown on the figure 3 but said front wall may be flat or have any other desired shape.
  • the front wall 17 may have a thickness e generally between 0.08 and 1.5 mm, in particular between 0.2 and 0.4 mm.
  • the holes 22 may have a constant section, as in the example shown, but the holes 22 could optionally have flared portions inwardly and / or outwardly, in which case the length of the holes 22 to be taken into account. account would be the length in which these holes have a constant section and the diameter to be taken into account would be the diameter of the minimum section.
  • the length of the holes 22 in their portion with a constant section is generally between 0.08 and 0.5 mm, advantageously between 0.08 and 0.3 mm, and more advantageously between 0.08 and 0.2 mm, in particular equal to about 0.1 mm.
  • the pusher 9 actuates the dispensing device 4, which supplies the inner chamber 20 of the nozzle with fluid under pressure, at a pressure generally below 7 bar, for example from order of 5 bars.
  • the fluid product is expelled through the calibrated holes 22 of the front wall 17, which produces a fine aerosol 23 droplets of relatively homogeneous size and little dependent on the exact value of the pressure of the fluid product in the inner chamber 20.
  • the spray nozzle 16 differs from the spray nozzle described above in that the front wall 17b is elastically deformable between a state of rest represented on the figure 4 and an actuation state represented on the figure 5 when pressurized fluid is transferred to the inner chamber 20.
  • the front wall 17b in the state of rest, extends in a plane perpendicular to the central axis X. And in the operating state, the front wall 17b has a convexity facing outwards from so, for example, to present a spherical cap shape.
  • the front wall 17b is flat.
  • This arrangement makes it possible to easily produce the holes 22 having an axis that extends, for example, along a normal to the front wall 17b, parallel to the central axis X.
  • the fluid product under pressure is transferred into the inner chamber 20 exerting a force on the front wall 17b so as to pass it in the operating state.
  • the axes of the holes 22 deviate from the central axis X so as to have an outward divergence.
  • the fluid product is expelled through the holes 22 diverging from the front wall 17b, which produces an aerosol 23 of fine droplets of relatively homogeneous size, the aerosol 23 being substantially conical with a high cone angle.
  • the side wall 18 is a separate part of the pusher 9, secured to the pusher 9, and the front wall 17b integral with the side wall 18 is made of the same material as the side wall 18.
  • the front wall 17b has a thickness e between 0.05 and 0.10 mm.
  • the embodiment of the elastically deformable front wall 17b according to the second embodiment may be provided in a manner complementary to or independent of the previously described embodiment in which all the holes 22 are of substantially the same diameter, between 1 and 100 ⁇ m, and the diameter each hole 22 does not differ from the average value of the diameters of the different holes 22 by more than 20%.
  • the side wall 18a is formed in one piece with the pusher 9.
  • the front wall 17c can thus be made in one piece with the pusher 9 and be in the same material as the pusher 9.
  • the core 21 can then be an insert and secured to the pusher 9 appropriately.
  • the front wall 17c is deformable.
  • the front wall 17c may have a thickness between 0.10 and 0.20 mm.
  • the front wall 17c has only a planar shape.
  • the third embodiment of the Figures 8 and 9 is similar to the embodiment of the figures 2 and 3 , and will not be described again in detail.
  • the spray nozzle 16 differs from the spray nozzle described above in that the front wall 17a is made of a different material from the side wall 18 of the nozzle, the side wall 18 being a separate part of the pusher 9, secured with the pusher 9.
  • the front wall 17a is secured to the side wall 18a formed in one piece with the pusher 9.
  • the front wall 17a can be made in one material selected from silicon, glass, metals and their alloys, ceramics or polymers, while the side wall 18 is made of plastic material as in the previous example, said side wall 18 being overmouldable around the periphery of the front wall 17a.
  • the front wall 17a is flat.
  • the front wall 17a may be deformable.
  • the front wall 17a can be made in the form of a complex comprising at least one polymer layer and optionally a layer of metallic material.
  • the complex may have a thickness of between 0.025 and 0.120 mm.
  • each hole 22 of the front wall 17 of the spray nozzle extends along an axis X 2 inclined relative to the normal X 1 to said front wall at 22.
  • the axis X2 and the normal X1 define a plane substantially tangential to a circle C centered on the central point of the front wall 17 and passing through the hole 22.
  • the axes X2 of all the holes 22 have an inclination of the same meaning with respect to the corresponding normal X1. This inclination may advantageously be the same for all the holes, and be for example between 10 and 60 deg. , in particular of the order of 30 °.
  • the aerosol A has a first part b1, in the vicinity of the spray nozzle, in which the liquid droplets are driven with a high speed of advance and which is substantially conical having a relatively high opening angle, for example of the order of 20 deg. or more.
  • aerosol A has a second part P2 forming a cloud in which the liquid droplets have a lower speed of advancement than in the first part p1. Thanks to the swirling motion of the liquid droplets, the second part b2 of the aerosol remains relatively symmetrical with respect to the axis X.
  • the front wall 17 may be elastically deformable.
  • the calibrated holes 22 can then be made in a simple manner with an axis X2 which extends in a plane parallel to the central axis X of the spray nozzle 16. The divergence of the axis X2 calibrated holes 22 can be obtained during actuation of the pusher to increase the opening angle of the first part of the aerosol A.

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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)
  • Nozzles (AREA)

Description

La présente invention se rapporte à un dispositif de pulvérisation et à une utilisation de ce dispositif.The present invention relates to a spraying device and to a use of this device.

Plus particulièrement, l'invention se rapporte à un dispositif de pulvérisation manuel conforme à la revendication 1.More particularly, the invention relates to a manual spray device according to claim 1.

Le document US-A-6 145 712 décrit un exemple d'un tel dispositif de pulvérisation, dans laquelle la face frontale de la buse de pulvérisation comporte un unique trou central. Le document WO03/02436 montre un dispositif de pulvérisation à haute pression, jusqu'à 500 bars, et prévoit un poussoir déplaçable perpendiculairement à l'axe du réservoir pour déplacer un organe de blocage et libérer le déplacemenrt d'une buse selon l'axe du réservoir sous l'action d'un ressort. D'autre part, le document EP1698399 décrit une buse de pulvérisation dont la paroi frontale est bombée et comporte des trous divergeant les uns par rapport aux autres. Le document EP613836 montre une paroi pourvue de pores placée sur un boîtier distant du poussoir. Le document WO02/01981 décrit une saillie creuse s'étendant depuis le poussoir et comportant des trous s'étendant transversalement par rapport à la saillie. En outre, le document JP2002186882 montre une buse de pulvérisation dont la paroi frontale comporte des ouvertures de formes variées, notamment des trous. Les caractéristiques du préambule de la revendication 1 sont connues de ce document.The document US-A-6,145,712 describes an example of such a spraying device, wherein the front face of the spray nozzle has a single central hole. The document WO03 / 02436 shows a high-pressure spraying device, up to 500 bar, and provides a pusher movable perpendicularly to the axis of the reservoir to move a locking member and release the movement of a nozzle along the axis of the reservoir under the action of a spring. On the other hand, the document EP1698399 describes a spray nozzle whose front wall is curved and has holes diverging relative to each other. The document EP613836 shows a pore-filled wall on a housing away from the pusher. The document WO02 / 01981 discloses a hollow projection extending from the pusher and having holes extending transversely of the projection. In addition, the document JP2002186882 shows a spray nozzle whose front wall has openings of various shapes, including holes. The features of the preamble of claim 1 are known from this document.

Dans les dispositifs de pulvérisation de ce type, les buses de pulvérisation, qui sont classiquement montées sur des pompes ou sur des valves de pulvérisation, présentent l'inconvénient d'entraîner une grande dispersion du diamètre des gouttelettes de produit fluide pulvérisé.In spraying devices of this type, the spray nozzles, which are conventionally mounted on pumps or spray valves, have the disadvantage of causing a large dispersion of the diameter of the sprayed fluid droplets.

En effet, dans les buses de pulvérisation de dispositif de ce type, le fractionnement du produit fluide en fines gouttelettes est obtenu par un phénomène dynamique particulièrement difficile à maîtriser, consistant généralement à créer un tourbillon dans la chambre intérieure de la buse et à fractionner le produit fluide en fines gouttelettes lors de sa sortie à très haute vitesse par le trou central.Indeed, in the device spray nozzles of this type, the fractionation of the fluid product in fine droplets is obtained by a dynamic phenomenon that is particularly difficult to control, generally consisting in creating a vortex in the inner chamber of the nozzle and in splitting the fluid product in fine droplets when it leaves at very high speed through the central hole.

A titre d'exemple, on a pu mesurer que, pour une buse de pulvérisation du type susmentionné dont la chambre intérieure reçoit une solution alcoolique sous une pression de 5 bars depuis une pompe manuelle ou une valve, et pour un trou central de la buse présentant un diamètre de 0,3 mm, le produit pulvérisé est constitué de gouttelettes ayant des diamètres compris entre 5 µm 300 µm.By way of example, it has been possible to measure that for a spraying nozzle of the abovementioned type whose inner chamber receives an alcoholic solution at a pressure of 5 bar from a hand pump or a valve, and for a central hole of the nozzle with a diameter of 0.3 mm, the pulverized product consists of droplets having diameters of between 5 μm and 300 μm.

Cette dispersion peut s'avérer indésirable lorsque l'on souhaite pulvériser des gouttelettes de tailles sensiblement homogènes. Par exemple, on peut souhaiter pulvériser des gouttelettes de petite taille pour l'inhalation de traitements médicamenteux des bronches, ou encore, on peut souhaiter pulvériser des gouttes de plus grande taille pour des applications cosmétiques ou de parfumerie, pour que les gouttelettes pénètrent le moins possible dans les bronches de l'utilisateur.This dispersion may be undesirable when it is desired to spray droplets of substantially homogeneous sizes. For example, we may wish spraying small droplets for inhaling medicinal bronchial treatments, or it may be desirable to spray larger drops for cosmetic or perfumery applications, so that the droplets penetrate as little as possible into the bronchi of the bronchi; 'user.

De plus, les gouttelettes de tailles très différentes suivent des trajectoires également très différentes, ce qui est néfaste pour une application contrôlée du produit pulvérisé. Par exemple, lors de la pulvérisation d'un parfum vers la peau d'un utilisateur, des gouttelettes de trop grande taille peuvent tomber sur les vêtements de l'utilisateur au lieu d'être projetées sur la peau, risquant de provoquer des tâches indélébiles.In addition, the droplets of very different sizes follow very different paths, which is detrimental to a controlled application of the sprayed product. For example, when spraying a perfume onto a user's skin, too large droplets may fall on the wearer's clothing instead of being thrown onto the skin, causing indelible stains. .

La présente invention a notamment pour but de pallier ces inconvénients.The present invention is intended to overcome these disadvantages.

A cet effet, l'invention propose un dispositif de pulvérisation manuel conforme à la revendication 1.For this purpose, the invention provides a manual spray device according to claim 1.

On notera que, le terme de diamètre n'implique pas nécessairement que cette section soit circulaire. Ainsi, les trous de la face frontale pourraient le cas échéant présenter une section polygonale, par exemple carrée, sans sortir du cadre de la présente invention. Dans ce cas, le diamètre susmentionné serait le diamètre équivalent du trou, c'est-à-dire le diamètre d'un trou circulaire présentant une section de même surface que le trou polygonal. Si les trous ne sont pas de section constante sur leur longueur, le diamètre en question est le diamètre de la section minimale des trous.It should be noted that the term diameter does not necessarily imply that this section is circular. Thus, the holes of the end face could optionally have a polygonal section, for example square, without departing from the scope of the present invention. In this case, the aforementioned diameter would be the equivalent diameter of the hole, that is to say the diameter of a circular hole having a section of the same surface as the polygonal hole. If the holes are not of constant section along their length, the diameter in question is the diameter of the minimum section of the holes.

Grâce aux dispositions exposées ci-dessus, on maîtrise la taille des gouttelettes pulvérisées par le dispositif de pulvérisation et on assure une bonne homogénéité de cette taille des gouttelettes.With the provisions described above, it controls the size of the droplets sprayed by the spray device and ensures a good homogeneity of this size of the droplets.

Par ailleurs, les dispositions précitées permettent également de s'affranchir au moins partiellement des différences de pression avec lesquelles le produit fluide est alimenté dans la chambre intérieure de la buse de pulvérisation, puisque l'expérience montre que la taille des gouttelettes obtenues grâce à la présente invention est peu dépendante de cette pression (les différences de pression en question peuvent provenir par exemple de différences dans la force d'actionnement d'un utilisateur si le produit fluide est alimenté grâce à une pompe manuelle, ou encore, lorsque le produit fluide est alimenté grâce à une valve à partir d'un réservoir de produit sous pression, les différences de pression en question peuvent provenir du fait que le réservoir a déjà été partiellement vidé par de précédentes utilisations du dispositif de pulvérisation).Furthermore, the aforementioned provisions also make it possible to overcome at least partially the pressure differences with which the fluid product is fed into the interior chamber of the spray nozzle, since experience shows that the size of the droplets obtained thanks to the The present invention is not very dependent on this pressure (the pressure differences in question may arise, for example, from differences in the operating force of a user if the fluid product is fed by means of a hand pump, or when the fluid product is fed through a valve from a pressure vessel, the pressure differences in question may be due to the fact that the tank has already been partially emptied by previous uses of the spray device).

Par ailleurs, l'invention vise à améliorer la maîtrise de la forme de l'aérosol obtenu en sortie de la buse de pulvérisation tout en permettant une réalisation simplifiée des trous calibrés.Furthermore, the invention aims to improve the control of the shape of the aerosol obtained at the outlet of the spray nozzle while allowing a simplified embodiment of the calibrated holes.

A cet effet, dans un mode de réalisation complémentaire ou indépendant du mode de réalisation défini précédemment, la paroi frontale est déformable élastiquement entre un état de repos, dans lequel ladite paroi frontale est plane, et un état d'actionnement lorsque du produit fluide sous pression est transféré dans la chambre intérieure, dans lequel ladite paroi frontale présente une convexité tournée vers l'extérieur.For this purpose, in a complementary or independent embodiment of the embodiment defined above, the front wall is elastically deformable between a state of rest, in which said front wall is flat, and an actuation state when the fluid product under pressure is transferred into the inner chamber, wherein said front wall has a convexity facing outwards.

Ainsi, à l'état de repos, les trous peuvent être réalisés de manière simple dans la paroi frontale plane, chaque trou pouvant présenter un axe qui s'étend dans un plan parallèle à un axe central perpendiculaire à la paroi frontale. A l'état d'actionnement, lorsque du produit fluide est pulvérisé, les axes des trous s'écartent par rapport à l'axe central de sorte à présenter une divergence vers l'extérieur et le produit fluide peut être pulvérisé sous la forme d'un aérosol présentant un angle d'ouverture élevé.Thus, in the idle state, the holes can be made in a simple manner in the flat front wall, each hole possibly having an axis which extends in a plane parallel to a central axis perpendicular to the front wall. In the actuated state, when fluid is sprayed, the axes of the holes deviate from the central axis so as to have an outward divergence and the fluid can be sprayed in the form of an aerosol having a high opening angle.

Dans divers modes de réalisation du dispositif de pulvérisation selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • la paroi frontale dans l'état d'actionnement présente une forme de calotte sphérique,
  • la paroi frontale est solidaire d'une paroi latérale périphérique qui s'étend longitudinalement selon un axe central sensiblement perpendiculaire à ladite paroi frontale,
  • la paroi frontale est formée d'une seule pièce avec la paroi latérale,
  • la paroi latérale est formée d'une seule pièce avec le poussoir, et la paroi frontale présente une épaisseur comprise entre 0,10 et 0,20 mm,
  • la paroi latérale est une pièce distincte du poussoir, solidarisée avec ledit poussoir, et la paroi frontale présente une épaisseur comprise entre 0,05 et 0,10 mm,
  • la paroi frontale est une pièce distincte de la paroi latérale, solidarisée avec ladite paroi latérale,
  • la paroi frontale est réalisée en un matériau choisi parmi le silicium, le verre, les métaux et leurs alliages, les céramiques, les polymères,
  • la paroi latérale est réalisée en matière plastique et est surmoulée autour de la paroi frontale,
  • la paroi frontale est réalisée sous la forme d'un complexe comprenant au moins une couche de polymère,
  • le complexe comprend une couche de polyester,
  • le complexe comprend en outre une enduction de matériau thermocollant, la paroi frontale étant collée sur la paroi latérale,
  • le complexe comprend en outre au moins une couche de polymère choisi parmi le polyéthylène et le polypropylène, la paroi frontale étant soudée sur la paroi latérale,
  • le complexe comprend en outre au moins une couche de matériau métallique,
  • le complexe présente une épaisseur comprise entre 0,025 et 0,120 mm,
  • le diamètre de chaque trou de la paroi frontale ne diffère pas de ladite moyenne de plus de 10 %.
In various embodiments of the spraying device according to the invention, one or more of the following provisions may also be used:
  • the front wall in the operating state has a spherical cap shape,
  • the front wall is integral with a peripheral lateral wall which extends longitudinally along a central axis substantially perpendicular to said front wall,
  • the front wall is formed in one piece with the side wall,
  • the side wall is formed in one piece with the pusher, and the front wall has a thickness of between 0.10 and 0.20 mm,
  • the side wall is a separate part of the pusher, secured to said pusher, and the front wall has a thickness of between 0.05 and 0.10 mm,
  • the front wall is a separate part of the side wall, secured to said side wall,
  • the front wall is made of a material chosen from silicon, glass, metals and their alloys, ceramics, polymers,
  • the side wall is made of plastic and is overmolded around the front wall,
  • the front wall is in the form of a complex comprising at least one polymer layer,
  • the complex comprises a polyester layer,
  • the complex further comprises a coating of heat-sealing material, the front wall being adhered to the side wall,
  • the complex further comprises at least one polymer layer selected from polyethylene and polypropylene, the front wall being welded to the side wall,
  • the complex further comprises at least one layer of metallic material,
  • the complex has a thickness of between 0.025 and 0.120 mm,
  • the diameter of each hole of the front wall does not differ from said average by more than 10%.

En outre, l'invention vise à améliorer la maîtrise de la distribution des gouttelettes et de la forme de l'aérosol.In addition, the invention aims to improve the control of the distribution of droplets and the shape of the aerosol.

Pour ce faire, de manière indépendante ou complémentaire du mode de réalisation défini précédemment, les trous de la paroi frontale sont répartis autour d'un centre, chaque trou s'étend selon un axe incliné par rapport à la normale à ladite paroi frontale au niveau dudit trou, ledit axe et ladite normale définissant un plan sensiblement tangent à un cercle centré sur ledit point central et passant par le trou, et les axes de tous les trous présentant une inclinaison par rapport à la normale correspondante, et lesdits axes de tous les trous étant inclinés dans le sens d'une même direction angulaire autour dudit point central de façon à générer un aérosol tourbillonnant lorsque du produit fluide est pulvérisé par ladite buse.To do this, independently or in addition to the embodiment defined above, the holes in the end wall are distributed around a center, each hole extends along an axis inclined relative to the normal to said front wall at the said hole, said axis and said normal defining a plane substantially tangential to a circle centered on said central point and passing through the hole, and the axes of all the holes having an inclination with respect to the corresponding normal, and said axes of all the holes being inclined in the direction of the same angular direction about said central point so as to generate a swirling aerosol when fluid is sprayed by said nozzle.

Du fait de la trajectoire tourbillonnaire des gouttelettes, l'aérosol peut présenter, au voisinage de la buse de pulvérisation, une première partie sensiblement conique ayant un angle d'ouverture élévé et une deuxième partie sensiblement symétrique par rapport à l'axe central de la buse.Due to the vortex trajectory of the droplets, the aerosol can have, in the vicinity of the spray nozzle, a first substantially conical portion having a high opening angle and a second portion substantially symmetrical with respect to the central axis of the nozzle.

Dans divers modes de réalisation du dispositif de pulvérisation selon l'invention, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • tous les trous présentent une même inclinaison,
  • tous les trous présentent une inclinaison comprise entre 10 et 60 degrés,
  • chaque trou présente un tronçon de section sensiblement constante et de longueur comprise entre 0,08 et 0,3 mm,
  • la paroi frontale de la buse comporte de 10 à 1000 trous,
  • la moyenne des diamètres des trous est comprise entre 1 et 3 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits pharmaceutiques de traitement des poumons),
  • la moyenne des diamètres des trous est comprise est comprise entre 3 et 10 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits pharmaceutiques de traitement de la trachée et des bronches),
  • la moyenne des diamètres des trous est comprise entre 10 et 60 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits pharmaceutiques de traitement du nez, de la bouche et de la gorge),
  • la moyenne des diamètres des trous est comprise entre 50 et 100 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits pharmaceutiques de traitement de la peau ou pour la pulvérisation de produits de maquillage),
  • la moyenne des diamètres des trous est comprise entre 15 et 60 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits de parfumerie),
  • la moyenne des diamètres est comprise entre 20 et 70 µm (cette plage de valeurs est spécialement adaptée pour la pulvérisation de produits cosmétiques de soin de la peau),
  • le dispositif de distribution est choisi parmi une pompe manuelle et une valve,
  • le réservoir est rempli de produit fluide à pulvériser présentant une viscosité dynamique inférieure à 50 cps,
  • le dispositif de distribution est adapté pour alimenter la chambre intérieure de la buse en produit fluide à pulvériser sous une pression inférieure à 7 bars.
In various embodiments of the spraying device according to the invention, one or more of the following provisions may also be used:
  • all the holes have the same inclination,
  • all the holes have an inclination of between 10 and 60 degrees,
  • each hole has a section of substantially constant section and length of between 0.08 and 0.3 mm,
  • the front wall of the nozzle has from 10 to 1000 holes,
  • the average of the diameters of the holes is between 1 and 3 μm (this range of values is specially adapted for the spraying of pharmaceutical products for the treatment of the lungs),
  • the average of the diameters of the holes is between 3 and 10 μm (this range of values is specially adapted for the spraying of tracheal and bronchial pharmaceutical products),
  • the average of the diameters of the holes is between 10 and 60 μm (this range of values is specially adapted for the spraying of pharmaceutical products for treatment of the nose, mouth and throat),
  • the average diameter of the holes is between 50 and 100 μm (this range of values is specially adapted for spraying pharmaceutical products for treating the skin or for spraying make-up products),
  • the average of the diameters of the holes is between 15 and 60 μm (this range of values is specially adapted for the spraying of perfumery products),
  • the average of the diameters is between 20 and 70 μm (this range of values is specially adapted for the spraying of cosmetic skincare products),
  • the dispensing device is chosen from a manual pump and a valve,
  • the tank is filled with a fluid spray which has a dynamic viscosity of less than 50 cps,
  • the dispensing device is adapted to supply the inner chamber of the nozzle with fluid to be sprayed at a pressure of less than 7 bar.

Par ailleurs, l'invention a également pour objet une utilisation d'un dispositif de pulvérisation tel que défini ci-dessus, pour pulvériser un produit fluide non gazeux.Furthermore, the invention also relates to a use of a spraying device as defined above, for spraying a non-gaseous fluid product.

Dans divers modes de réalisation de cette utilisation, on peut éventuellement avoir recours en outre à l'une et/ou à l'autre des dispositions suivantes :

  • le produit fluide présente une viscosité dynamique inférieure à 50 cps à 20 deg. C,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit pharmaceutique de traitement des poumons, la moyenne des diamètres des trous de la buse étant comprise entre 1 et 3 µm
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit pharmaceutique de traitement de la trachée et/ou des bronches, la moyenne des diamètres des trous de la buse étant comprise entre 3 et 10 µm,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit pharmaceutique de traitement du nez, de la bouche ou de la gorge, la moyenne des diamètres des trous de la buse étant comprise entre 10 et 60 µm,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit pharmaceutique de traitement de la peau, la moyenne des diamètres des trous de la buse étant comprise entre 50 et 100 µm,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit de parfumerie, la moyenne des diamètres des trous de la buse étant comprise entre 15 et 60 µm,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit cosmétique de soin de la peau, la moyenne des diamètres des trous de la buse étant comprise entre 20 et 70 µm,
  • on utilise le dispositif de pulvérisation pour pulvériser au moins un produit de maquillage, la moyenne des diamètres des trous de la buse étant comprise entre 50 et 100 µm,
  • on alimente la chambre intérieure de la buse en produit à pulvériser, sous une pression inférieure à 7 bars.
In various embodiments of this use, one or more of the following may also be used:
  • the fluid product has a dynamic viscosity of less than 50 cps at 20 deg. VS,
  • the spraying device is used for spraying at least one pharmaceutical product for treating the lungs, the mean diameter of the holes of the nozzle being between 1 and 3 μm
  • the spraying device is used for spraying at least one pharmaceutical product for treating the trachea and / or the bronchi, the mean diameter of the holes of the nozzle being between 3 and 10 μm,
  • the spraying device is used for spraying at least one pharmaceutical product for treating the nose, the mouth or throat, the average diameter of the holes of the nozzle being between 10 and 60 microns,
  • the spraying device is used for spraying at least one skin treatment pharmaceutical product, the mean diameter of the holes of the nozzle being between 50 and 100 μm,
  • the spraying device is used for spraying at least one perfumery product, the mean diameter of the holes of the nozzle being between 15 and 60 μm,
  • the spraying device is used for spraying at least one cosmetic skin care product, the mean diameter of the holes of the nozzle being between 20 and 70 μm,
  • the spraying device is used for spraying at least one makeup product, the mean diameter of the holes of the nozzle being between 50 and 100 μm,
  • the inner chamber of the nozzle is supplied with product to be sprayed at a pressure of less than 7 bar.

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante de trois de ses modes de réalisation, donnés à titre d'exemples non limitatifs, en regard des dessins joints.Other features and advantages of the invention will become apparent from the following description of three of its embodiments, given by way of non-limiting examples, with reference to the accompanying drawings.

Sur les dessins :

  • la figure 1 est une vue en coupe verticale d'un dispositif de pulvérisation de produit fluide selon une forme de réalisation de l'invention,
  • la figure 2 est une vue en coupe verticale du poussoir du dispositif de pulvérisation de la figure 1, dans un premier variante de qui ne fait plus partie de l'invention
  • la figure 3 est une vue de détail en coupe de la buse de pulvérisation équipant le poussoir de la figure 2,
  • les figures 4 et 5 sont des vues en coupe verticale du poussoir du dispositif de pulvérisation de la figue 1, dans un deuxième mode de réalisation conforme à l'invention, les figures représentant la buse de pulvérisation respectivement dans un état de repos et dans un état d'actionnement,
  • les figures 6 et 7 sont des vues similaires respectivement aux figures 4 et 5, dans une variante qui ne fait plus partie de l'invention,
  • les figures 8 et 9 sont des vues similaires respectivement aux figures 2 et 3, dans un troisième mode de réalisation conforme à l'invention,
  • la figure 10 est une vue similaire à la figure 9, dans une variante qui ne fait plus partie de l'invention,
  • la figure 11 est une vue de face de la paroi frontale de la buse de pulvérisation du dispositif, dans un quatrième mode de réalisation, les trous de cette paroi frontale étant représentés plus larges qu'en réalité, pour plus de clarté,
  • la figure 12 est une vue en coupe développée, selon la ligne courbe XII-XII de la figure 11,
  • la figure 13 est une vue similaire à la figure 1, illustrant le fonctionnement du quatrième mode de réalisation de l'invention.
On the drawings:
  • the figure 1 is a vertical sectional view of a fluid spray device according to one embodiment of the invention,
  • the figure 2 is a vertical sectional view of the pusher of the spraying device of the figure 1 in a first variant of which is no longer part of the invention
  • the figure 3 is a detail view in section of the spray nozzle equipping the pusher of the figure 2 ,
  • the Figures 4 and 5 are views in vertical section of the pusher of the spray device of FIG. 1, in a second embodiment according to the invention, the figures representing the spray nozzle respectively in a state of rest and in an actuated state,
  • the Figures 6 and 7 are similar views respectively to Figures 4 and 5 in a variant which is no longer part of the invention,
  • the Figures 8 and 9 are similar views respectively to figures 2 and 3 in a third embodiment according to the invention,
  • the figure 10 is a view similar to the figure 9 in a variant which is no longer part of the invention,
  • the figure 11 is a front view of the front wall of the spray nozzle of the device, in a fourth embodiment, the holes of this front wall being shown wider than in reality, for clarity,
  • the figure 12 is a sectional view developed along the curved line XII-XII of the figure 11 ,
  • the figure 13 is a view similar to the figure 1 , illustrating the operation of the fourth embodiment of the invention.

Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires.In the different figures, the same references designate identical or similar elements.

La figure 1 représente un dispositif de pulvérisation 1 adapté pour pulvériser un produit fluide non gazeux 2 contenu dans un réservoir 3. Le produit fluide en question peut être un produit liquide ou semi-liquide, par exemple un produit pharmaceutique, un produit cosmétique, un produit de parfumerie ou autre. La viscosité dynamique du produit fluide 2 est généralement inférieure à 50 cps (centipoises) à 20 deg. C.The figure 1 represents a spraying device 1 suitable for spraying a non-gaseous fluid product 2 contained in a reservoir 3. The fluid product in question may be a liquid or semi-liquid product, for example a pharmaceutical product, a cosmetic product or a perfumery product Or other. The dynamic viscosity of the fluid product 2 is generally less than 50 cps (centipoise) at 20 deg. vs.

Le dispositif de pulvérisation 1 comporte en outre un dispositif de distribution 4 qui est fixé de façon connue à un col 5 du réservoir 3 à l'extrémité supérieure dudit réservoir.The spraying device 1 further comprises a dispensing device 4 which is fixed in known manner to a neck 5 of the reservoir 3 at the upper end of said reservoir.

Le dispositif de distribution 4 peut par exemple être une pompe manuelle de pulvérisation ou encore une valve de pulvérisation, auquel cas le réservoir 3 est sous pression.The dispensing device 4 may for example be a manual spray pump or a spray valve, in which case the tank 3 is under pressure.

Dans tous les cas, le dispositif de distribution 4 comporte une entrée 6 de produit fluide, orientée vers le bas, qui communique avec le fond du réservoir 3 par l'intermédiaire d'un tube plongeur 7, et une tige d'actionnement creuse 8 qui fait saillie vers le haut. Un bouton poussoir 9 est emboîté à l'extrémité supérieure de la tige d'actionnement 8, et sert à la fois à l'actionnement du dispositif de distribution 4 et à la sortie du produit fluide pulvérisé, sortie qui s'effectue au travers de la tige actionnement 8, selon la flèche 10 représentée sur la figure 2.In all cases, the dispensing device 4 comprises a fluid inlet 6 downwardly, which communicates with the bottom of the tank 3 through a dip tube 7, and a hollow actuating rod 8 which protrudes upwards. A push button 9 is fitted at the upper end of the actuating rod 8, and serves both to actuate the dispensing device 4 and to the outlet of the sprayed fluid, which exit is effected through the actuating rod 8, according to the arrow 10 shown on the figure 2 .

On notera que le dispositif de distribution représenté en figure 1 pourrait, en variante, être utilisé en position inversée, c'est-à-dire le fond du réservoir 3 orienté vers le haut. Dans ce cas, le dispositif de distribution 4 ne comporterait pas de tube plongeur 7.It will be noted that the distribution device represented in figure 1 could, alternatively, be used in the inverted position, that is to say the bottom of the tank 3 facing upwards. In this case, the dispensing device 4 would not include a dip tube 7.

Comme représenté sur la figure 2, le poussoir 9 peut par exemple être moulé d'une seule pièce en matière plastique, notamment un polyoléfine, par exemple en polypropylène ou autre.As shown on the figure 2 , the pusher 9 may for example be molded in one piece of plastic material, in particular a polyolefin, for example polypropylene or other.

Le poussoir 9 comporte une paroi supérieure 11 sensiblement horizontale et une jupe 12 sensiblement cylindrique et verticale, qui s'étend à partir de la périphérie de la paroi supérieure 11.The pusher 9 comprises a substantially horizontal upper wall 11 and a substantially cylindrical and vertical skirt 12, which extends from the periphery of the upper wall 11.

Par ailleurs, le poussoir 9 comporte en outre un puits central 13 qui s'étend verticalement vers le bas à partir de la paroi supérieure 11, au centre de la paroi latérale 12. L'extrémité supérieure de la tige d'actionnement 8 est emboîtée dans le puits central 13.Furthermore, the pusher 9 further comprises a central well 13 which extends vertically downwards from the upper wall 11, in the center of the side wall 12. The upper end of the actuating rod 8 is nested in the central well 13.

A l'extrémité supérieure du puits central 13 est ménagé un passage latéral 14 qui communique avec un logement de réception de buse 15 de forme sensiblement cylindrique, s'étendant sensiblement horizontalement selon un axe central X et débouchant vers l'extérieur du poussoir 9.At the upper end of the central well 13 is formed a lateral passage 14 which communicates with a nozzle receiving housing 15 of substantially cylindrical shape, extending substantially horizontally along a central axis X and opening towards the outside of the pusher 9.

Comme représenté sur les figures 2 et 3, une buse de pulvérisation 16 est emboîtée à force dans le logement de buse 15. Cette buse de pulvérisation 16 peut être formée d'une seule pièce en matière plastique, par exemple en polybutylènetérephtalate (PBT), en copolymère cyclo-oléfine (COC) ou encore en polyacétal (POM) et comporte :

  • une paroi frontale perforée 17,
  • et une paroi latérale annulaire 18 qui présente une forme cylindrique (de révolution ou non) qui s'étend selon l'axe X à l'intérieur du logement de buse 15, à partir de la périphérie de la paroi frontale 17.
As shown on figures 2 and 3 a spray nozzle 16 is force-fitted into the nozzle housing 15. This spray nozzle 16 may be integrally formed of plastic material, for example polybutylenetetraphthalate (PBT), cycloolefin copolymer (COC) or polyacetal (POM) and comprises:
  • a perforated front wall 17,
  • and an annular side wall 18 which has a cylindrical shape (of revolution or not) which extends along the X axis inside the nozzle housing 15, from the periphery of the front wall 17.

De façon connue en soi, la paroi latérale 18 de la buse de pulvérisation 16 peut comporter, à son extrémité opposée à la paroi frontale 17 un gaudron annulaire 19 qui fait saillie radialement vers l'extérieur et qui pénètre dans la matière du poussoir 9 pour ancrer la buse de pulvérisation 16 dans le logement de buse 15.In a manner known per se, the side wall 18 of the spraying nozzle 16 may comprise, at its end opposite to the end wall 17, an annular gaudron 19 projecting radially outwards and which penetrates into the material of the pusher 9 to anchor the spray nozzle 16 in the nozzle housing 15.

La buse de pulvérisation 16 délimite, avec le poussoir 9, une chambre intérieure 20 qui communique avec le passage 14 susmentionné et qui reçoit le produit fluide à pulvériser lors de l'actionnement du dispositif de distribution 4. Eventuellement, comme on peut le voir sur la figure 2, le poussoir 9 peut comporter un noyau 21 qui fait saillie à l'intérieur de la paroi latérale 18 de la buse de pulvérisation pour limiter le volume de cette chambre intérieure 20.The spray nozzle 16 delimits, with the pusher 9, an inner chamber 20 which communicates with the aforementioned passage 14 and which receives the fluid to be sprayed upon actuation of the dispensing device 4. Optionally, as can be seen on the figure 2 , the pusher 9 may comprise a core 21 which protrudes inside the side wall 18 of the spray nozzle to limit the volume of this inner chamber 20.

Comme représenté plus en détail sur la figure 3, la paroi frontale 17 de la buse de pulvérisation comporte une pluralité de trous 22 qui sont répartis sur la surface de ladite face frontale. Les trous 22 peuvent être au nombre de 10 à 1000 par exemple. Le diamètre de chaque trou 22 est généralement compris entre 1 et 100 µm, tous les trous 22 étant sensiblement de même diamètreAs shown in more detail on the figure 3 , the front wall 17 of the spray nozzle has a plurality of holes 22 which are distributed on the surface of said end face. The holes 22 may be 10 to 1000 for example. The diameter of each hole 22 is generally between 1 and 100 μm, all the holes 22 being of substantially the same diameter

Plus généralement, le diamètre de chaque trou 22 ne diffère pas de la valeur moyenne des diamètres des différents trous 22 de plus de 20% et avantageusement, le diamètre de chaque trou 22 ne diffère pas de ladite valeur moyenne de plus de 10%.More generally, the diameter of each hole 22 does not differ from the average value of the diameters of the different holes 22 by more than 20% and, advantageously, the diameter of each hole 22 does not differ from said average value by more than 10%.

Les trous 22 peuvent être de forme sensiblement cylindrique à section circulaire, mais ils pourraient le cas échéant présenter une section polygonale, par exemple carrée, auquel cas le diamètre susmentionné serait le diamètre équivalent du trou, c'est-à-dire le diamètre d'un trou circulaire présentant une section de même surface que le trou polygonal.The holes 22 may be substantially cylindrical in shape with a circular cross-section, but they could possibly have a polygonal section, for example square, in which case the aforementioned diameter would be the equivalent diameter of the hole, that is to say the diameter of a circular hole having a section of the same surface as the polygonal hole.

Le diamètre des trous 22 peut être choisi en fonction du produit fluide à pulvériser, et par exemple :

  • le diamètre moyen des trous 22 peut être compris entre 1 et 3 2. µm (micromètres) pour la pulvérisation de produits pharmaceutiques de traitement des poumons
  • le diamètre moyen des trous 22 peut être compris entre 3 et 10 µm pour la pulvérisation de produits pharmaceutiques de traitement de la trachée et des bronches,
  • le diamètre moyen des trous 22 peut être compris entre 10 et 60 µm pour la pulvérisation de produits pharmaceutiques de traitement du nez, de la bouche ou de la gorge,
  • le diamètre moyen des trous 22 peut être compris entre 50 et 100 µm pour la pulvérisation de produits pharmaceutiques de traitement de la peau ou pour la pulvérisation de produits de maquillage,
  • le diamètre moyen des trous 22 peut être compris entre 15 et 60 µm pour la pulvérisation de produits de parfumerie,
  • le diamètre moyen des trous 22 peut être compris entre 20 et 70 µm pour la pulvérisation de produits cosmétiques de soin de la peau,
The diameter of the holes 22 may be chosen according to the fluid to be sprayed, and for example:
  • the average diameter of the holes 22 can be between 1 and 3 2. μm (micrometers) for spraying pharmaceutical products for treating the lungs
  • the average diameter of the holes 22 may be between 3 and 10 μm for the spraying of tracheal and bronchial pharmaceutical products,
  • the average diameter of the holes 22 may be between 10 and 60 μm for the spraying of pharmaceutical treatment products for the nose, mouth or throat,
  • the average diameter of the holes 22 may be between 50 and 100 μm for spraying skin treatment pharmaceutical products or for spraying make-up products,
  • the average diameter of the holes 22 may be between 15 and 60 μm for the spraying of perfumery products,
  • the average diameter of the holes 22 may be between 20 and 70 μm for spraying cosmetic skin care products,

La paroi frontale 17 peut présenter une forme bombée de concavité tournée vers l'intérieur, comme dans l'exemple représenté sur la figure 3, mais ladite paroi frontale peut être plate ou présenter tout autre forme souhaitée.The front wall 17 may have a convex shape of concavity turned inwards, as in the example shown on the figure 3 but said front wall may be flat or have any other desired shape.

Par ailleurs, la paroi frontale 17 peut présenter une épaisseur e comprise généralement entre 0,08 et 1,5 mm, notamment entre 0,2 et 0,4 mm.Furthermore, the front wall 17 may have a thickness e generally between 0.08 and 1.5 mm, in particular between 0.2 and 0.4 mm.

Les trous 22 peuvent présenter une section constante, comme dans l'exemple représenté, mais les trous 22 pourraient le cas échéant présenter des parties évasées vers l'intérieur et/ou vers l'extérieur, auquel cas la longueur des trous 22 à prendre en compte serait la longueur dans laquelle ces trous présentent une section constante et le diamètre à prendre en compte serait le diamètre de la section minimale. La longueur des trous 22 dans leur partie à section constante, est généralement comprise entre 0,08 et 0,5 mm, avantageusement entre 0,08 et 0,3 mm, et plus avantageusement encore entre 0,08 et 0,2 mm, notamment égale à environ 0,1 mm.The holes 22 may have a constant section, as in the example shown, but the holes 22 could optionally have flared portions inwardly and / or outwardly, in which case the length of the holes 22 to be taken into account. account would be the length in which these holes have a constant section and the diameter to be taken into account would be the diameter of the minimum section. The length of the holes 22 in their portion with a constant section is generally between 0.08 and 0.5 mm, advantageously between 0.08 and 0.3 mm, and more advantageously between 0.08 and 0.2 mm, in particular equal to about 0.1 mm.

Comme représenté sur la figure 2, lorsqu'un utilisateur appuie sur le poussoir 9, celui-ci actionne le dispositif de distribution 4, qui alimente la chambre intérieure 20 de la buse en produit fluide sous pression, à une pression généralement inférieure à 7 bars, par exemple de l'ordre de 5 bars. Le produit fluide est expulsé au travers des trous calibrés 22 de la paroi frontale 17, ce qui produit un aérosol 23 de fines gouttelettes de taille relativement homogène et peu dépendante de la valeur exacte de la pression du produit fluide dans la chambre intérieure 20.As shown on the figure 2 when a user presses on the pusher 9, the pusher actuates the dispensing device 4, which supplies the inner chamber 20 of the nozzle with fluid under pressure, at a pressure generally below 7 bar, for example from order of 5 bars. The fluid product is expelled through the calibrated holes 22 of the front wall 17, which produces a fine aerosol 23 droplets of relatively homogeneous size and little dependent on the exact value of the pressure of the fluid product in the inner chamber 20.

Dans un deuxième mode de réalisation représenté sur les figures 4 et 5, la buse de pulvérisation 16 diffère de la buse de pulvérisation précédemment décrite en ce que la paroi frontale 17b est déformable élastiquement entre un état de repos représenté sur la figure 4 et un état d'actionnement représenté sur la figure 5, lorsque du produit fluide sous pression est transféré dans la chambre intérieure 20.In a second embodiment shown on the Figures 4 and 5 , the spray nozzle 16 differs from the spray nozzle described above in that the front wall 17b is elastically deformable between a state of rest represented on the figure 4 and an actuation state represented on the figure 5 when pressurized fluid is transferred to the inner chamber 20.

En particulier, dans l'état de repos, la paroi frontale 17b s'étend dans un plan perpendiculaire à l'axe central X. Et dans l'état d'actionnement, la paroi frontale 17b présente une convexité tournée vers l'extérieur de sorte, par exemple, à présenter une forme de calotte sphérique.In particular, in the state of rest, the front wall 17b extends in a plane perpendicular to the central axis X. And in the operating state, the front wall 17b has a convexity facing outwards from so, for example, to present a spherical cap shape.

Comme représenté sur les figures 4 et 5, à l'état de repos, la paroi frontale 17b est plane. Cette disposition permet de réaliser de manière simple les trous 22 présentant un axe qui s'étend, par exemple, selon une normale à la paroi frontale 17b, parallèlement à l'axe central X. Lorsqu'un utilisateur appuie sur le poussoir 9, du produit fluide sous pression est transféré dans la chambre intérieure 20 exerçant une force sur la paroi frontale 17b de sorte à la faire passer dans l'état d'actionnement. Les axes des trous 22 s'écartent par rapport à l'axe central X de sorte à présenter une divergence vers l'extérieur. Le produit fluide est expulsé au travers des trous 22 divergeant de la paroi frontale 17b, ce qui produit un aérosol 23 de fines gouttelettes de taille relativement homogène, l'aérosol 23 étant sensiblement conique avec un angle de cône élevé.As shown on Figures 4 and 5 in the state of rest, the front wall 17b is flat. This arrangement makes it possible to easily produce the holes 22 having an axis that extends, for example, along a normal to the front wall 17b, parallel to the central axis X. When a user presses the pusher 9, the fluid product under pressure is transferred into the inner chamber 20 exerting a force on the front wall 17b so as to pass it in the operating state. The axes of the holes 22 deviate from the central axis X so as to have an outward divergence. The fluid product is expelled through the holes 22 diverging from the front wall 17b, which produces an aerosol 23 of fine droplets of relatively homogeneous size, the aerosol 23 being substantially conical with a high cone angle.

Sur les figures 4 et 5, la paroi latérale 18 est une pièce distincte du poussoir 9, solidarisée avec le poussoir 9, et la paroi frontale 17b venue de matière avec la paroi latérale 18 est réalisée dans le même matériau que la paroi latérale 18. Pour permettre le passage de l'état de repos à l'état d'actionnement, on prévoit que la paroi frontale 17b présente une épaisseur e comprise entre 0,05 et 0,10 mm.On the Figures 4 and 5 , the side wall 18 is a separate part of the pusher 9, secured to the pusher 9, and the front wall 17b integral with the side wall 18 is made of the same material as the side wall 18. To allow the passage of the state of rest in the operating state, it is expected that the front wall 17b has a thickness e between 0.05 and 0.10 mm.

La réalisation de la paroi frontale 17b déformable élastiquement selon le deuxième mode de réalisation peut être prévue de manière complémentaire ou indépendante de la réalisation précédemment décrite dans laquelle tous les trous 22 sont sensiblement de même diamètre, compris entre 1 et 100 µm, et le diamètre de chaque trou 22 ne diffère pas de la valeur moyenne des diamètres des différents trous 22 de plus de 20%.The embodiment of the elastically deformable front wall 17b according to the second embodiment may be provided in a manner complementary to or independent of the previously described embodiment in which all the holes 22 are of substantially the same diameter, between 1 and 100 μm, and the diameter each hole 22 does not differ from the average value of the diameters of the different holes 22 by more than 20%.

En variante représentée sur les figures 6 et 7, on peut prévoir que la paroi latérale 18a soit formée d'une seule pièce avec le poussoir 9. La paroi frontale 17c peut ainsi être réalisée d'une seule pièce avec le poussoir 9 et être dans le même matériau que le poussoir 9. Le noyau 21 peut alors être une pièce rapportée et solidarisée au poussoir 9 de manière appropriée.As a variant represented on the Figures 6 and 7 , it can be provided that the side wall 18a is formed in one piece with the pusher 9. The front wall 17c can thus be made in one piece with the pusher 9 and be in the same material as the pusher 9. The core 21 can then be an insert and secured to the pusher 9 appropriately.

Comme représenté sur les figures 6 et 7, on peut prévoir que la paroi frontale 17c soit déformable. Pour ce faire, la paroi frontale 17c peut présenter une épaisseur comprise entre 0,10 et 0,20 mm. On pourrait toutefois prévoir que la paroi frontale 17c présente uniquement une forme plane.As shown on Figures 6 and 7 it can be provided that the front wall 17c is deformable. To do this, the front wall 17c may have a thickness between 0.10 and 0.20 mm. However, it could be provided that the front wall 17c has only a planar shape.

Le troisième mode de réalisation des figures 8 et 9 est similaire au mode de réalisation des figures 2 et 3, et ne sera donc pas décrit à nouveau en détail. Dans ce mode de réalisation des figures 8 et 9, la buse de pulvérisation 16 diffère de la buse de pulvérisation précédemment décrite par le fait que la paroi frontale 17a est réalisée en un matériau différent de la paroi latérale 18 de la buse, la paroi latérale 18 étant une pièce distincte du poussoir 9, solidarisée avec le poussoir 9.The third embodiment of the Figures 8 and 9 is similar to the embodiment of the figures 2 and 3 , and will not be described again in detail. In this embodiment of Figures 8 and 9 , the spray nozzle 16 differs from the spray nozzle described above in that the front wall 17a is made of a different material from the side wall 18 of the nozzle, the side wall 18 being a separate part of the pusher 9, secured with the pusher 9.

En variante représentée sur la figure 10, on peut prévoir que la paroi frontale 17a soit solidarisée avec la paroi latérale 18a formée d'une seule pièce avec le poussoir 9.In a variant represented on the figure 10 , it can be provided that the front wall 17a is secured to the side wall 18a formed in one piece with the pusher 9.

Par exemple, la paroi frontale 17a peut être réalisée en un matériau choisi parmi le silicium, le verre, les métaux et leurs alliages, les céramiques ou les polymères, tandis que la paroi latérale 18 est réalisée en matière plastique comme dans l'exemple précédent, ladite paroi latérale 18 pouvant être surmoulée sur le pourtour de la paroi frontale 17a.For example, the front wall 17a can be made in one material selected from silicon, glass, metals and their alloys, ceramics or polymers, while the side wall 18 is made of plastic material as in the previous example, said side wall 18 being overmouldable around the periphery of the front wall 17a.

Dans le mode de réalisation des figures 8 et 9, la paroi frontale 17a est plane.In the embodiment of Figures 8 and 9 , the front wall 17a is flat.

Par ailleurs, dans un autre mode de réalisation, la paroi frontale 17a peut être déformable. Par exemple, la paroi frontale 17a peut être réalisée sous la forme d'un complexe comprenant au moins une couche de polymère et éventuellement une couche de matériau métallique. Le complexe peut présenter une épaisseur comprise entre 0,025 et 0,120 mm.Furthermore, in another embodiment, the front wall 17a may be deformable. For example, the front wall 17a can be made in the form of a complex comprising at least one polymer layer and optionally a layer of metallic material. The complex may have a thickness of between 0.025 and 0.120 mm.

A titre d'exemples non limitatifs, le complexe peut comprendre :

  • une couche de polyester, d'une épaisseur de 0,025 mm, et une enduction thermocollante permettant le collage de la paroi frontale 17a sur la paroi latérale 18, ou
  • une couche de polyester, d'une épaisseur de 0,025 mm, et une couche de polyéthylène, d'une épaisseur de 0,020 mm, permettant le soudage de la paroi frontale 17a sur la paroi latérale 18, ou
  • une couche de polyester, d'une épaisseur de 0,025 mm, et une couche de polypropylène, d'une épaisseur de 0,020 mm, ou
  • une couche de polyester, d'une épaisseur de 0,025 mm, une couche d'aluminium, d'une épaisseur de 0,008 mm, et une couche de polyéthylène, d'une épaisseur de 0,040 mm.
By way of nonlimiting examples, the complex can comprise:
  • a polyester layer, of a thickness of 0.025 mm, and a heat-sealing coating for bonding the end wall 17a to the side wall 18, or
  • a polyester layer, 0.025 mm thick, and a polyethylene layer, 0.020 mm thick, allowing the welding of the front wall 17a on the side wall 18, or
  • a polyester layer, 0.025 mm thick, and a polypropylene layer, 0.020 mm thick, or
  • a polyester layer, 0.025 mm thick, an aluminum layer, 0.008 mm thick, and a polyethylene layer, 0.040 mm thick.

Dans le quatrième mode de réalisation de l'invention, représentée sur les figures 11 à 13, de manière complémentaire ou indépendante de la réalisation de la paroi frontale 17 déformable élastiquement, la chaque trou 22 de la paroi frontale 17 de la buse de pulvérisation s'étend selon un axe X2 incliné par rapport à la normale X1 à ladite paroi frontale au niveau dudit trou 22. L'axe X2 et la normale X1 définissent un plan sensiblement tangent à un cercle C centré sur le point central de la paroi frontale 17 et passant par le trou 22. Les axes X2 de tous les trous 22 présentent une inclinaison de même sens par rapport à la normale X1 correspondante. Cette inclinaison peut avantageusement être la même pour tous les trous, et être comprise par exemple entre 10 et 60 deg. , notamment de l'ordre de 30°.In the fourth embodiment of the invention, shown in the Figures 11 to 13 , in a complementary manner or independent of the production of the resiliently deformable front wall 17, the each hole 22 of the front wall 17 of the spray nozzle extends along an axis X 2 inclined relative to the normal X 1 to said front wall at 22. The axis X2 and the normal X1 define a plane substantially tangential to a circle C centered on the central point of the front wall 17 and passing through the hole 22. The axes X2 of all the holes 22 have an inclination of the same meaning with respect to the corresponding normal X1. This inclination may advantageously be the same for all the holes, and be for example between 10 and 60 deg. , in particular of the order of 30 °.

Du fait que les trous 22 sont tous inclinés dans le même sens angulaire 24 (figure 6), lorsqu'un aérosol A est généré par la buse de pulvérisation (voir figure 8), la trajectoire v suivie par chaque gouttelette de liquide de l'aérosol est une trajectoire tourbillonnante autour de l'axe central X de la buse de pulvérisation.Since the holes 22 are all inclined in the same angular direction 24 ( figure 6 ), when an aerosol A is generated by the spray nozzle (see figure 8 ), the trajectory v followed by each droplet aerosol liquid is a swirling path around the central axis X of the spray nozzle.

L'aérosol A présente une première partie b1, au voisinage de la buse de pulvérisation, dans laquelle les gouttelettes de liquide sont animées d'une grande vitesse d'avancement et qui est sensiblement conique ayant un angle d'ouverture relativement élevé, par exemple de l'ordre de 20 deg. ou plus.The aerosol A has a first part b1, in the vicinity of the spray nozzle, in which the liquid droplets are driven with a high speed of advance and which is substantially conical having a relatively high opening angle, for example of the order of 20 deg. or more.

De plus, l'aérosol A présente une deuxième partie p2 formant un nuage dans lequel les gouttelettes de liquide ont une vitesse d'avancement moindre que dans la première partie p1. Grâce au mouvement tourbillonnaire des gouttelettes de liquide, la deuxième partie b2 de l'aérosol reste relativement symétrique par rapport à l'axe X.In addition, aerosol A has a second part P2 forming a cloud in which the liquid droplets have a lower speed of advancement than in the first part p1. Thanks to the swirling motion of the liquid droplets, the second part b2 of the aerosol remains relatively symmetrical with respect to the axis X.

Dans ce mode de réalisation, avec une paroi frontale 17 comprenant une centaine de trous 22 de diamètre 3 m ménagés dans une paroi 17 d'épaisseur 0,3 mm, avec une inclinaison des trous de l'ordre de 30 deg. et avec une pression d'un liquide alcoolique de l'ordre de 0,5 bars à l'intérieur de la buse de pulvérisation, on obtient la pulvérisation d'un aérosol constitué de gouttelettes de diamètre 5 µm à 7 µm.In this embodiment, with a front wall 17 comprising a hundred holes 22 of diameter 3 m formed in a wall 17 with a thickness of 0.3 mm, with a tilt of the holes of the order of 30 deg. and with a pressure of an alcoholic liquid of the order of 0.5 bars inside the spray nozzle, the spray of an aerosol consisting of droplets with a diameter of 5 μm to 7 μm is obtained.

On peut prévoir, en variante, que la paroi frontale 17 soit déformable élastiquement. A l'état de repos, les trous calibrés 22 peuvent alors être réalisés de manière simple avec un axe X2 qui s'étend dans un plan parallèle à l'axe central X de la buse de pulvérisation 16. La divergence de l'axe X2 des trous calibrés 22 peut être obtenue lors de l'actionnement du poussoir pour augmenter l'angle d'ouverture de la première partie de l'aérosol A.As an alternative, the front wall 17 may be elastically deformable. In the state of rest, the calibrated holes 22 can then be made in a simple manner with an axis X2 which extends in a plane parallel to the central axis X of the spray nozzle 16. The divergence of the axis X2 calibrated holes 22 can be obtained during actuation of the pusher to increase the opening angle of the first part of the aerosol A.

Claims (32)

  1. Manual spray device comprising:
    - a manually actuable dispenser button (9), the said dispenser button comprising a substantially horizontal upper wall (11), a substantially cylindrical and vertical skirt portion (12) that extends from a periphery of the upper wall (11), and a substantially cylindrical housing (15) that extends substantially horizontally along a central axis (X) and terminates outside the skirt portion (12) of the dispenser button (9),
    - a spray nozzle (16) firmly engaged in the housing (15), the said spray nozzle comprising an internal chamber (20) capable of receiving a pressurised, non-gaseous fluid product and bounded on the outside by a perforated front wall (17), the said front wall (17) being planar and comprising a plurality of calibrated holes (22) extending parallel to the central axis (X) of the housing (15),
    - a reservoir (3) for fluid product to be sprayed, and
    - a distribution device (4) mechanically actuable by the dispenser button and designed to transfer the fluid product from the reservoir (3) to the internal chamber (20) of the nozzle, the said distribution device (4) being capable of supplying the internal chamber (20) of the nozzle with fluid product under a pressure of less than 7 bars,
    characterised in that each of the calibrated holes has a diameter between 1 and 100 µm, the diameter of each hole not differing by more than 20% from an average value of the diameters of the different holes.
  2. Spray device according to claim 1, wherein the front wall (17) is integral with a peripheral side wall (18; 18a) that extends longitudinally along the central axis (X) substantially perpendicular to the said front wall (17).
  3. Spray device according to claim 2, wherein the front wall (17) is formed in one piece with the side wall (18; 18a).
  4. Spray device according to claim 2, wherein the front wall (17a) is a part different form the side wall (18; 18a) and is integral with the said side wall (18; 18a).
  5. Spray device according to claim 4, wherein the front wall (17a) is made of a material chosen from silicon, glass, metals and their alloys, ceramics, or polymers.
  6. Spray device according to claim 4 or claim 5, wherein the side wall (18) is made of a plastic material and is moulded around the front wall.
  7. Spray device according to claim 4, wherein the front wall (17a) is made in the form of a composite comprising at least one polymer layer.
  8. Spray device according to claim 7, wherein the composite comprises a polyester layer.
  9. Spray device according to claim 8, wherein the composite also comprises a coating of heat-sealing material, the front wall (17a) being bonded to the side wall (18; 18a).
  10. Spray device according to claim 8, wherein the composite also comprises at least one polymer layer selected from polyethylene and polypropylene, the front wall (17a) being welded to the side wall (18; 18a).
  11. Spray device according to any one of claims 7 to 10, wherein the composite also comprises at least one layer of metallic material.
  12. Spray device according to any one of claims 1 to 11, wherein the diameter of each hole (22) of the front wall does not differ from the said average value by more than 10%.
  13. Spray device according to any one of claims 1 to 12, wherein each hole (22) has a substantially constant cross-section and a length between 0.08 and 0.3 mm.
  14. Spray device according to any one of claims 1 to 13, wherein the front wall (17) of the nozzle comprises from 10 to 1000 holes.
  15. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 1 and 3 µm.
  16. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 3 and 10 µm.
  17. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 10 and 60 µm.
  18. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 50 and 100 µm.
  19. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 15 and 60 µm.
  20. Spray device according to any one of claims 1 to 14, wherein the average value of the diameters of the holes is between 20 and 70 µm.
  21. Spray device according to any one of claims 1 to 20, wherein the distribution device (4) is chosen from a manual pump and a valve.
  22. Spray device according to any one of claims 1 to 21, wherein the reservoir (3) is filled with fluid product to be sprayed having a dynamic viscosity below 50 cps.
  23. Use of a spray device according to any one of claims 1 to 14, for spraying a non-gaseous fluid product.
  24. Use according to claim 23, wherein the fluid product has a dynamic viscosity below 50 cps at 20 °C.
  25. Use according to claim 23 or claim 24, for spraying at least one pharmaceutical product for pulmonary treatment, the average value of the diameters of the holes (22) of the nozzle being between 1 and 3 µm.
  26. Use according to claim 23 or claim 24, for spraying at least one pharmaceutical product for tracheal and/or bronchial treatment, the average value of the diameters of the holes (22) of the nozzle being between 3 and 10 µm.
  27. Use according to claim 23 or claim 24, for spraying at least one pharmaceutical product for nasal, buccal or laryngeal treatment, the average value of the diameters of the holes (22) of the nozzle being between 10 and 60 µm.
  28. Use according to claim 23 or claim 24, for spraying at least one pharmaceutical product for dermal treatment, the average value of the diameters of the holes (22) of the nozzle being between 50 and 100 µm.
  29. Use according to claim 23 or claim 24, for spraying at least one perfumery product, the average value of the diameters of the holes (22) of the nozzle being between 15 and 60 µm.
  30. Use according to claim 23 or claim 24, for spraying at least one cosmetic product for skin care, the average value of the diameters of the holes (22) of the nozzle being between 20 and 70 µm.
  31. Use according to claim 23 or claim 24, for spraying at least one make-up product, the average value of the diameters of the holes (22) of the nozzle being between 50 and 100 µm.
  32. Use according to any one of claims 23 to 31, wherein the internal chamber of the nozzle is supplied with product to be sprayed, under a pressure below 7 bars.
EP07111772.5A 2006-07-10 2007-07-04 Spraying device and use of same Active EP1878507B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17175982.2A EP3246096B1 (en) 2006-07-10 2007-07-04 Spraying device and use of same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0606259A FR2903328B1 (en) 2006-07-10 2006-07-10 SPRAY NOZZLE, SPRAY DEVICE AND USE THEREOF.
FR0700485A FR2903329B3 (en) 2006-07-10 2007-01-24 SPRAY NOZZLE, SPRAY DEVICE AND USE THEREOF.

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EP17175982.2A Division-Into EP3246096B1 (en) 2006-07-10 2007-07-04 Spraying device and use of same

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EP1878507A2 EP1878507A2 (en) 2008-01-16
EP1878507A3 EP1878507A3 (en) 2010-03-03
EP1878507B1 true EP1878507B1 (en) 2017-09-06
EP1878507B2 EP1878507B2 (en) 2023-08-30

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US (1) US7748647B2 (en)
EP (2) EP3246096B1 (en)
BR (1) BRPI0702942B1 (en)
FR (1) FR2903329B3 (en)
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Also Published As

Publication number Publication date
BRPI0702942A (en) 2008-02-26
EP1878507A2 (en) 2008-01-16
EP1878507A3 (en) 2010-03-03
RU2007125994A (en) 2009-01-20
FR2903329B3 (en) 2008-10-03
US20080006719A1 (en) 2008-01-10
BRPI0702942A8 (en) 2015-04-07
EP3246096B1 (en) 2021-09-08
EP1878507B2 (en) 2023-08-30
US7748647B2 (en) 2010-07-06
EP3246096A1 (en) 2017-11-22
FR2903329A1 (en) 2008-01-11
BRPI0702942B1 (en) 2019-01-08

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