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EP1270431B1 - Device for spraying a product, especially in form of sample metering - Google Patents

Device for spraying a product, especially in form of sample metering Download PDF

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Publication number
EP1270431B1
EP1270431B1 EP02291402A EP02291402A EP1270431B1 EP 1270431 B1 EP1270431 B1 EP 1270431B1 EP 02291402 A EP02291402 A EP 02291402A EP 02291402 A EP02291402 A EP 02291402A EP 1270431 B1 EP1270431 B1 EP 1270431B1
Authority
EP
European Patent Office
Prior art keywords
product
reservoir
zone
deformation
actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02291402A
Other languages
German (de)
French (fr)
Other versions
EP1270431A1 (en
Inventor
Florent Duqueroie
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 EP1270431A1 publication Critical patent/EP1270431A1/en
Application granted granted Critical
Publication of EP1270431B1 publication Critical patent/EP1270431B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
    • B65D1/32—Containers adapted to be temporarily deformed by external pressure to expel contents
    • 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
    • B05B11/04—Deformable containers producing the flow, e.g. squeeze bottles
    • B05B11/048—Deformable containers producing the flow, e.g. squeeze bottles characterised by the container, e.g. this latter being surrounded by an enclosure, or the means for deforming it

Definitions

  • the present invention relates to a device for packaging and dispensing in spray form a fluid product.
  • the invention relates to a miniature spray suitable for packaging cosmetic products, especially perfumes.
  • the samples are not generally intended for sale, their manufacturing cost must be as low as possible. It is therefore important to have devices whose parts are easily achievable in large series and whose assembly can be performed in a simple manner. In addition, they must be able to generate a spray whose quality is as good as possible, and whose characteristics are as constant as possible. It is also desirable that they generate a relatively mild spray, for a certain period of time, so that this spray is close to an aerosol type spray.
  • One solution for producing such packages at a cost as low as possible would be to make the tank in the form of a pod of the type that is commonly used for the packaging of certain physiological serums, eye drops or makeup removers.
  • a pod is made in one piece with a spray orifice whose opening is caused by tearing a tip, in particular by a twist of the tip around the axis of the orifice.
  • the filling of such a device can be done via the open bottom of the tank. The latter is then closed, in particular by welding, in the manner of a tube.
  • the welding operation after filling the tank, especially when it is a highly volatile product such as a perfume, is not without problems. Under the effect of heat, the product may evaporate, deteriorate or even ignite.
  • the quality of the spray depends on the speed with which the compressible walls of the tank are pressed. Indeed, if the walls are pressed slowly, the spraying is of poor quality, this is particularly the case of the device described in the patent. BE 870,592 .
  • a wall having a threshold of resistance to deformation means a wall configured in such a way that its deformation does not depend linearly on the pressure exerted on it to deform it, but requires the passing of a threshold.
  • the pressure exerted by a user on the actuating wall causes, before reaching the threshold pressure P s , namely, the necessary and sufficient pressure to overcome said predetermined threshold of resistance to the deformation of said wall of actuation, a deformation of the wall which does not allow the product to be sprayed but which makes it possible to accumulate energy so that, when the pressure exerted by the user on the wall reaches the threshold pressure P s , the wall is suddenly deformed.
  • the volume inside the tank is then reduced so that an overpressure is created suddenly inside the tank. This overpressure makes it possible to remove all of the product present in the reservoir, or only a part, through the orifice in the form of a spray of good quality.
  • the device is configured so that the deformation of an actuation zone causes the product to spray for a period of time. greater than one second, for example for a period of between 2s and 45s, preferably between 2s and 10s.
  • the threshold pressure he is not obliged to maintain pressure on the deformed area to spray the product.
  • the product is pulverized for a period of time, even when the user no longer exerts pressure on the zone, until the overpressure created inside the tank falls below the value required to cause the dispensing to take place. sprayed form.
  • the actuation zone has a substantially convex profile in its undeformed position, in particular in the form of a dome, and a substantially concave profile in its deformed position when the predetermined threshold of resistance to the deformation of said wall of operation has been exceeded.
  • the actuation zone in order to facilitate maintaining the actuation zone in deformed position without maintaining pressure on the deformed zone, the actuation zone is delimited by a line of the wall of smaller thickness.
  • the actuation zone of the reservoir is formed of at least one layer of a thermoplastic material, in particular a polyethylene, a polypropylene, a polyethylene terephthalate, a polyethylene naphthalate, a polyacrylonitrile, a polyoxymethylene, a polyvinyl chloride, or a mixture of these materials, or a metallic material.
  • a thermoplastic material in particular a polyethylene, a polypropylene, a polyethylene terephthalate, a polyethylene naphthalate, a polyacrylonitrile, a polyoxymethylene, a polyvinyl chloride, or a mixture of these materials, or a metallic material.
  • the tank wall has a plurality of actuating zones.
  • the user can spray the product contained in the tank in several times.
  • all the actuating zones deform substantially identically.
  • the user can spray substantially identical doses of product.
  • At least two actuating zones deform differently.
  • the overpressure generated during the deformation of the first actuation zone is different from that generated during the deformation of the second zone and the doses of the sprayed product are not identical.
  • the user can choose to spray a relatively large dose of product and then add one or more small doses to complete the application of the product.
  • the spray orifice is formed in a diffuser made in the form of a nozzle with one or more vortex channels.
  • the vortex channels thus accelerate the fluid upstream of the orifice so as to produce very fine liquid particles.
  • the orifice may alternatively be formed in a simple nozzle.
  • the diffuser is mounted on the tank, in particular by snapping or screwing.
  • an intermediate element can be provided between the reservoir and the diffuser.
  • the intermediate element is for example a nozzle which is mounted on the reservoir, in particular by snapping or screwing.
  • the diffuser is then mounted on said tip, by gluing or welding, especially hot.
  • the device is particularly suitable for packaging and spraying a sample dose of a cosmetic product, especially a perfume.
  • the device represented in overview at the figure 1 and in sectional view at the figure 2 comprises a tank 10 with a deformable wall, containing the product to be dispensed, on which is mounted a dispensing nozzle 30 provided with a spray orifice 21 in communication with the interior of the tank.
  • a pressure By exerting a pressure on the wall of the tank, an overpressure is created inside the reservoir which causes the product to be sprayed through the orifice.
  • the reservoir 10 is configured in the form of a drop of water, but it is obvious that it may have any other shape allowing the deformation of at least one of its walls. It is obtained by molding, in particular by injection molding, for example in one piece, a thermoplastic material, in particular a polyethylene, a polypropylene, a polyethylene terephthalate, a polyethylene naphthalate, a a polyacrylonitrile, a polyoxymethylene, a polyvinyl chloride, or a mixture of these materials.
  • the wall of the tank 10 has several actuating zones 11 of convex shape which are deformable when pressure is exerted on it. These zones are configured so that they do not return to their original position when they stop pressing on them.
  • the reservoir 10 has a flat wall 12. This configuration of the reservoir makes it easy to identify the areas on which the user must exert pressure so that the operation of the device is made obvious. In addition, this configuration makes it easy to grasp the device between two fingers, for example by placing the thumb on the flat wall 12 and the index finger on one of the operating zones 11 or vice versa. The user thus exerts pressure on an actuation area with his index finger or his thumb so that he can easily spray the product.
  • the reservoir 10 terminates in an open neck 13, threaded on its outer surface.
  • a diffuser 20 is screwed onto the neck of the reservoir being disposed in the extension of the tank wall so as to form the end of the drop of water.
  • the diffuser 20 is provided with a fixing skirt 22, threaded on its inner surface to cooperate with the neck 13 of the tank 10.
  • a cylindrical sealing skirt 23 is provided to be housed inside the neck 13 of the tank and thus ensure the seal between the opening of the neck 13 and the diffuser.
  • the diffuser 20 is obtained by molding, for example in one piece, a thermoplastic material, especially polyethylene or polypropylene.
  • a vortex channel nozzle 30 is mounted on the diffuser 20.
  • the spray orifice 21 is formed in the nozzle and is in communication with the interior of the reservoir via the inside of the neck 13.
  • the nozzle 30 is mounted on the diffuser by any suitable means, for example by gluing, welding, clamping, or snapping.
  • the actuating zone remains in the deformed position when the pressure exerted on it ceases due to the geometry of this zone which is in the shape of a half-sphere of small radius of curvature.
  • such a deformation is obtained by adjusting certain parameters of the wall, in particular on the rigidity of the material used to form the actuation zone, on the thickness of the wall in this zone, or on the radius of the wall. curvature of the actuation area.
  • certain parameters of the wall in particular on the rigidity of the material used to form the actuation zone, on the thickness of the wall in this zone, or on the radius of the wall. curvature of the actuation area.
  • One or more of these parameters can be played in combination.
  • the figure 4 represents a spraying device in which the diffuser 20 provided with the nozzle 30 as just described has been replaced in accordance with the figure 2 by a simple nozzle 40 provided with a spray orifice 21.
  • the tip 40 has a fixing skirt 42 threaded on its outer surface so as to be screwed onto the neck 13 of the container 10.
  • the tip 40 also comprises a skirt sealing member 43 intended to be housed inside the neck 13 of the tank.
  • Such a tip can also be used in the embodiment described in accordance with the figure 3 .
  • the reservoir is configured to generate a spray of good quality.
  • the actuating zone 11 has a predetermined threshold of resistance to deformation below which the wall is slightly deformed and beyond which, the wall is sharply deformed to present a concave profile as shown in FIG. figure 2 .
  • This threshold is determined according to the geometry of the operating zone but also the nature of the material used to form this wall and finally the thickness of the wall.
  • the reservoir can move from a first convex position corresponding to its undistorted position to a second concave position corresponding to its deformed position. This second position is pre-established, again depending on the geometry of the actuation zone.
  • the deformable volume namely the volume variation between the undeformed position and the pre-established deformed position.
  • the rest of the reservoir is substantially not deformed so that when the actuation zone is deformed, the internal volume of the reservoir decreases.
  • An overpressure is then created inside the reservoir which causes the product to exit through the nozzle.
  • this pressure being created very abruptly when crossing the threshold, the product is suddenly forced to flow out of the tank through the orifice.
  • the average flow rate of the nozzle is chosen according to the configuration of the reservoir and the viscosity of the product to be sprayed.
  • the total volume of product that can be expelled from the reservoir in the deformed position of the actuating wall is determined. Indeed, this volume depends on the viscosity of the product and the overpressure to which it is subjected in the deformed position. The more viscous the product, the higher the pressure required to spray it.
  • the overpressure is determined according to the deformable volume of the reservoir that can be easily determined as previously seen. If it is desired that this maximum volume be pulverized during N seconds, then a nozzle having an average flow rate less than or equal to the ratio between the maximum volume of product and N.
  • a reservoir 10 made of polyethylene terephthalate (PET) is used.
  • the reservoir has a plurality of operating zones which, in an undeformed position, each have a convex profile which becomes concave in the deformed position.
  • Each operating zone in the undeformed state is in the shape of a half-sphere which has a radius of curvature of the order of 6 mm.
  • the wall of each operating zone has a thickness of about 0.3 mm.
  • the reservoir In the undeformed state, the reservoir has a volume of 7.5 ml.
  • the reservoir has a deformable volume of 0.5 ml so that, after deformation of a first actuation zone, the volume of the reservoir is 7.0 ml. If it is desired to spray water for about 5 seconds after depressing an actuation zone, a nozzle having an average flow rate of 0.1 ml is selected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Nozzles (AREA)

Abstract

The perfume spray has a body (12) and a nozzle (20, 21). The body has deformable depressions (11) over it. No spray is produced until the pressure on these exceeds a threshold value and they return slowly to the uncompressed state, allowing the spray to continue until this is reached.

Description

La présente invention concerne un dispositif de conditionnement et de distribution sous forme pulvérisée d'un produit fluide. En particulier, l'invention concerne un pulvérisateur miniature adapté au conditionnement de produits cosmétiques, notamment de parfums.The present invention relates to a device for packaging and dispensing in spray form a fluid product. In particular, the invention relates to a miniature spray suitable for packaging cosmetic products, especially perfumes.

Des distributeurs de ce type sont décrits notamment dans les demandes de brevet FR-A-2 778 639 , EP-A-0 761 314 , FR-A-2 443 980 , ou dans les brevets US-A-3 897 005 , US-A-3 412 907 ou BE 870 592 . Tous ces dispositifs souffrent principalement d'au moins un handicap, lié soit à leur coût de fabrication, soit à leur facilité d'utilisation, soit à la qualité du spray qu'ils sont capables de générer.Distributors of this type are described in particular in the requests for FR-A-2,778,639 , EP-A-0 761 314 , FR-A-2,443,980 , or in patents US-A-3 897 005 , US-A-3,412,907 or BE 870,592 . All these devices suffer mainly from at least one handicap, related either to their manufacturing cost, or to their ease of use, or to the quality of the spray they are able to generate.

En effet, les échantillons n'étant généralement pas destinés à la vente, leur coût de fabrication doit être aussi faible que possible. Il est donc important d'avoir des dispositifs dont les pièces soient aisément réalisables en grande série et dont le montage puisse être effectué de manière simple. En outre, ils doivent être en mesure de générer un spray dont la qualité soit aussi bonne que possible, et dont les caractéristiques soient aussi constantes que possible. Il est également souhaitable qu'ils génèrent un spray relativement doux, pendant une certaine durée, de manière à ce que ce spray se rapproche d'une pulvérisation de type aérosol.Indeed, the samples are not generally intended for sale, their manufacturing cost must be as low as possible. It is therefore important to have devices whose parts are easily achievable in large series and whose assembly can be performed in a simple manner. In addition, they must be able to generate a spray whose quality is as good as possible, and whose characteristics are as constant as possible. It is also desirable that they generate a relatively mild spray, for a certain period of time, so that this spray is close to an aerosol type spray.

Une solution pour réaliser de tels conditionnements à un coût aussi faible que possible consisterait à réaliser le réservoir sous forme d'une dosette du type de ce qui est utilisé couramment pour le conditionnement de certains sérums physiologiques, collyres ou produits démaquillants. Une telle dosette est réalisée en une seule pièce avec un orifice de pulvérisation dont l'ouverture est provoquée par arrachage d'un embout, notamment par une torsion de l'embout autour de l'axe de l'orifice. Le remplissage d'un tel dispositif peut se faire via le fond ouvert du réservoir. Ce dernier est ensuite refermé notamment par soudage, à la manière d'un tube.One solution for producing such packages at a cost as low as possible would be to make the tank in the form of a pod of the type that is commonly used for the packaging of certain physiological serums, eye drops or makeup removers. Such a pod is made in one piece with a spray orifice whose opening is caused by tearing a tip, in particular by a twist of the tip around the axis of the orifice. The filling of such a device can be done via the open bottom of the tank. The latter is then closed, in particular by welding, in the manner of a tube.

Une telle solution souffre toutefois de deux inconvénients majeurs. Le premier tient au fait qu'à l'ouverture, l'orifice qui résulte de l'arrachage de l'embout par torsion est de forme et de dimensions imprécises. Il en résulte que le spray pouvant être obtenu au travers d'un tel orifice, lorsque l'on presse les parois compressibles du réservoir, présente des caractéristiques variant fortement d'un dispositif à l'autre. Souvent même, la section de l'orifice est telle, qu'il n'est pas possible de générer un spray. Le produit ne peut que s'écouler sous forme de gouttes plus ou moins grosses ou d'un filet continu.Such a solution, however, suffers from two major disadvantages. The first is that at the opening, the orifice resulting from tearing the tip by torsion is imprecise shape and dimensions. As a result, the spray that can be obtained through such an orifice, when the compressible walls of the reservoir are pressed, has characteristics that vary greatly from one device to another. Often even, the section of the orifice is such that it is not possible to generate a spray. The product can only flow in the form of drops larger or smaller or a continuous net.

En outre, l'opération de soudage, après remplissage du réservoir, notamment lorsqu'il s'agit d'un produit fortement volatile tel qu'un parfum, n'est pas sans poser de problème. Sous l'effet de la chaleur, le produit risque de s'évaporer, de se détériorer, voire de s'enflammer.In addition, the welding operation, after filling the tank, especially when it is a highly volatile product such as a perfume, is not without problems. Under the effect of heat, the product may evaporate, deteriorate or even ignite.

Par ailleurs, la qualité du spray dépend de la vitesse avec laquelle on presse les parois compressibles du réservoir. En effet, si on presse lentement les parois, la pulvérisation est de mauvaise qualité, c'est le cas notamment du dispositif décrit dans le brevet BE 870 592 .Moreover, the quality of the spray depends on the speed with which the compressible walls of the tank are pressed. Indeed, if the walls are pressed slowly, the spraying is of poor quality, this is particularly the case of the device described in the patent. BE 870,592 .

Aussi, est-ce un des objets de l'invention que de réaliser un tel dispositif de pulvérisation, résolvant en tout ou partie les problèmes discutés ci-avant en référence aux dispositifs conventionnels.Also, is it an object of the invention to provide such a spraying device, solving all or part of the problems discussed above with reference to conventional devices.

C'est en particulier un objet de l'invention que de réaliser un tel dispositif qui soit facile à produire en grande série, avec un coût de revient aussi faible que possible.It is particularly an object of the invention to provide such a device which is easy to produce in large series, with a cost as low as possible.

C'est un autre objet de l'invention que de fournir un tel dispositif qui permette de générer un spray de qualité à la fois satisfaisante, et reproductible d'un dispositif à l'autre.It is another object of the invention to provide such a device which makes it possible to generate a quality spray which is both satisfactory and reproducible from one device to another.

C'est encore un autre objet que de fournir un dispositif capable de générer une pulvérisation pendant une certaine durée, et qui permet d'obtenir un spray relativement doux.It is yet another object to provide a device capable of generating a spray for a certain period of time, and which makes it possible to obtain a relatively mild spray.

Selon l'invention, ces objets sont atteints en réalisant un dispositif de distribution d'un produit fluide selon la rev. principale.According to the invention, these objects are achieved by producing a device for dispensing a fluid product according to the rev. main.

Au sens de la présente invention, par "une paroi présentant un seuil de résistance à la déformation" on entend une paroi configurée de manière telle que sa déformation ne dépend pas linéairement de la pression exercée dessus pour la déformer, mais nécessite le dépassement d'un seuil. Ainsi, la pression exercée par un utilisateur sur la paroi d'actionnement entraîne, avant d'atteindre la pression de seuil Ps, à savoir, la pression nécessaire et suffisante pour vaincre ledit seuil prédéterminé de résistance à la déformation de ladite paroi d'actionnement, une déformation de la paroi qui ne permet pas de pulvériser du produit mais qui permet d'accumuler de l'énergie de sorte que, lorsque la pression exercée par l'utilisateur sur la paroi atteint la pression de seuil Ps, la paroi se déforme brutalement. Le volume à l'intérieur du réservoir se réduit alors de sorte qu'une surpression est créée brutalement à l'intérieur du réservoir. Cette surpression permet de faire sortir l'ensemble du produit présent dans le réservoir, ou seulement une partie, au travers de l'orifice sous forme d'un spray de bonne qualité.Within the meaning of the present invention, by "a wall having a threshold of resistance to deformation" means a wall configured in such a way that its deformation does not depend linearly on the pressure exerted on it to deform it, but requires the passing of a threshold. Thus, the pressure exerted by a user on the actuating wall causes, before reaching the threshold pressure P s , namely, the necessary and sufficient pressure to overcome said predetermined threshold of resistance to the deformation of said wall of actuation, a deformation of the wall which does not allow the product to be sprayed but which makes it possible to accumulate energy so that, when the pressure exerted by the user on the wall reaches the threshold pressure P s , the wall is suddenly deformed. The volume inside the tank is then reduced so that an overpressure is created suddenly inside the tank. This overpressure makes it possible to remove all of the product present in the reservoir, or only a part, through the orifice in the form of a spray of good quality.

Avantageusement, le dispositif est configuré de sorte que la déformation d'une zone d'actionnement provoque la pulvérisation de produit pendant une durée supérieure à une seconde, par exemple pendant une durée comprise entre 2s et 45s, de préférence entre 2s et 10s.Advantageously, the device is configured so that the deformation of an actuation zone causes the product to spray for a period of time. greater than one second, for example for a period of between 2s and 45s, preferably between 2s and 10s.

Ainsi, une fois que l'utilisateur a exercé la pression de seuil, il n'est pas obligé de maintenir une pression sur la zone déformée pour pulvériser le produit. Le produit est pulvérisé pendant un certain temps, même lorsque l'utilisateur n'exerce plus de pression sur ladite zone, jusqu'à ce que la surpression créée à l'intérieur du réservoir passe en dessous de la valeur requise pour provoquer la distribution sous forme pulvérisée.Thus, once the user has exerted the threshold pressure, he is not obliged to maintain pressure on the deformed area to spray the product. The product is pulverized for a period of time, even when the user no longer exerts pressure on the zone, until the overpressure created inside the tank falls below the value required to cause the dispensing to take place. sprayed form.

Selon un mode de réalisation préféré, la zone d'actionnement présente un profil sensiblement convexe dans sa position non déformée, notamment en forme de dôme, et un profil sensiblement concave dans sa position déformée lorsque le seuil prédéterminé de résistance à la déformation de ladite paroi d'actionnement a été dépassé. Une telle configuration permet de facilement obtenir une paroi avec un seuil de résistance à la déformation qui correspond au passage entre le profil concave et le profil convexe.According to a preferred embodiment, the actuation zone has a substantially convex profile in its undeformed position, in particular in the form of a dome, and a substantially concave profile in its deformed position when the predetermined threshold of resistance to the deformation of said wall of operation has been exceeded. Such a configuration makes it easy to obtain a wall with a threshold of resistance to deformation which corresponds to the passage between the concave profile and the convex profile.

Selon un mode de réalisation, afin de faciliter le maintien de la zone d'actionnement en position déformée sans maintenir une pression sur la zone déformée, la zone d'actionnement est délimitée par une ligne de la paroi de moindre épaisseur.According to one embodiment, in order to facilitate maintaining the actuation zone in deformed position without maintaining pressure on the deformed zone, the actuation zone is delimited by a line of the wall of smaller thickness.

La zone d'actionnement du réservoir est formée d'au moins une couche d'un matériau thermoplastique, notamment un polyéthylène, un polypropylène, un polyéthylène téréphtalate, un polyéthylène naphtalate, un polyacrylonitrile, un polyoxyméthylène, un polychlorure de vinyle, ou un mélange de ces matériaux, ou un matériau métallique.The actuation zone of the reservoir is formed of at least one layer of a thermoplastic material, in particular a polyethylene, a polypropylene, a polyethylene terephthalate, a polyethylene naphthalate, a polyacrylonitrile, a polyoxymethylene, a polyvinyl chloride, or a mixture of these materials, or a metallic material.

Selon un mode de réalisation particulier de l'invention, la paroi du réservoir présente une pluralité de zones d'actionnement. Ainsi, l'utilisateur peut pulvériser le produit contenu dans le réservoir en plusieurs fois.According to a particular embodiment of the invention, the tank wall has a plurality of actuating zones. Thus, the user can spray the product contained in the tank in several times.

Selon un mode de réalisation particulier, toutes les zones d'actionnement se déforment de manière sensiblement identique. L'utilisateur peut dans ce cas pulvériser des doses de produit sensiblement identiques.According to a particular embodiment, all the actuating zones deform substantially identically. In this case, the user can spray substantially identical doses of product.

Selon un autre mode de réalisation, au moins deux zones d'actionnement se déforment de manière différente. La surpression générée lors de la déformation de la première zone d'actionnement est différente de celle générée lors de la déformation de la seconde zone et les doses de produit pulvérisé ne sont pas identiques. Selon cette configuration, l'utilisateur peut choisir de pulvériser une dose de produit relativement importante puis d'ajouter une ou plusieurs petites doses pour parfaire l'application du produit.According to another embodiment, at least two actuating zones deform differently. The overpressure generated during the deformation of the first actuation zone is different from that generated during the deformation of the second zone and the doses of the sprayed product are not identical. According to this configuration, the user can choose to spray a relatively large dose of product and then add one or more small doses to complete the application of the product.

Avantageusement, l'orifice de pulvérisation est ménagé dans un diffuseur réalisé sous forme d'une buse à un ou plusieurs canaux tourbillonnaires. Les canaux tourbillonnaires permettent ainsi d'accélérer le fluide en amont de l'orifice de manière à produire des particules de liquide très fines. Il est évident que l'orifice peut alternativement être ménagé dans une simple buse.Advantageously, the spray orifice is formed in a diffuser made in the form of a nozzle with one or more vortex channels. The vortex channels thus accelerate the fluid upstream of the orifice so as to produce very fine liquid particles. It is obvious that the orifice may alternatively be formed in a simple nozzle.

Le diffuseur est monté sur le réservoir, notamment par encliquetage ou vissage. Alternativement, on peut prévoir un élément intermédiaire entre le réservoir et le diffuseur. L'élément intermédiaire est par exemple un embout qui est monté sur le réservoir, notamment par encliquetage ou vissage. Le diffuseur est alors monté sur ledit embout, par collage ou soudage, notamment à chaud.The diffuser is mounted on the tank, in particular by snapping or screwing. Alternatively, an intermediate element can be provided between the reservoir and the diffuser. The intermediate element is for example a nozzle which is mounted on the reservoir, in particular by snapping or screwing. The diffuser is then mounted on said tip, by gluing or welding, especially hot.

Le dispositif est particulièrement adapté pour le conditionnement et la pulvérisation d'une dose échantillon d'un produit cosmétique, notamment d'un parfum.The device is particularly suitable for packaging and spraying a sample dose of a cosmetic product, especially a perfume.

L'invention consiste, mis à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions qui seront explicitées ci-après, à propos d'exemples de réalisation non limitatifs, décrits en référence aux figures annexées, parmi lesquelles :

  • la figure 1 illustre une vue en perspective d'un mode de réalisation préféré du dispositif de pulvérisation selon l'invention;
  • la figure 2 représente une vue en coupe du dispositif illustré à la figure 1 en position de pulvérisation;
  • la figure 3 représente une vue en coupe d'un second mode de réalisation du dispositif selon l'invention;
  • la figure 4 représente une vue en coupe d'un troisième mode de réalisation du dispositif selon l'invention.
The invention consists, apart from the arrangements set out above, in a certain number of other arrangements which will be explained below, with reference to nonlimiting exemplary embodiments, described with reference to the appended figures, among which:
  • the figure 1 illustrates a perspective view of a preferred embodiment of the spraying device according to the invention;
  • the figure 2 represents a sectional view of the device illustrated in FIG. figure 1 in the spray position;
  • the figure 3 represents a sectional view of a second embodiment of the device according to the invention;
  • the figure 4 represents a sectional view of a third embodiment of the device according to the invention.

Le dispositif représenté en vue d'ensemble à la figure 1 et en vue en coupe à la figure 2 comprend un réservoir 10 à paroi déformable, contenant le produit à distribuer, sur lequel est monté un embout de distribution 30 muni d'un orifice de pulvérisation 21 en communication avec l'intérieur du réservoir. En exerçant une pression sur la paroi du réservoir, on crée une surpression à l'intérieur du réservoir qui entraîne la pulvérisation du produit au travers de l'orifice.The device represented in overview at the figure 1 and in sectional view at the figure 2 comprises a tank 10 with a deformable wall, containing the product to be dispensed, on which is mounted a dispensing nozzle 30 provided with a spray orifice 21 in communication with the interior of the tank. By exerting a pressure on the wall of the tank, an overpressure is created inside the reservoir which causes the product to be sprayed through the orifice.

Selon le mode de réalisation représenté, le réservoir 10 est configuré sous forme d'une goutte d'eau, mais il est évident qu'il peut présenter toute autre forme autorisant la déformation d'au moins une de ses parois. Il est obtenu par moulage, notamment par injection soufflage, par exemple d'une seule pièce, d'un matériau thermoplastique, notamment d'un polyéthylène, d'un polypropylène, d'un polyéthylène téréphtalate, d'un polyéthylène naphtalate, d'un polyacrylonitrile, d'un polyoxyméthylène, d'un polychlorure de vinyle, ou encore d'un mélange de ces matériaux. La paroi du réservoir 10 présente plusieurs zones d'actionnement 11 de forme bombée qui sont déformables lorsqu'on exerce une pression dessus. Ces zones sont configurées de sorte qu'elles ne reprennent pas leur position initiale lorsqu'on cesse d'exercer une pression dessus. Le réservoir 10 présente une paroi plane 12. Cette configuration du réservoir permet de facilement identifier les zones sur lesquelles l'utilisateur doit exercer une pression de sorte que le fonctionnement du dispositif est rendu évident. En outre, cette configuration permet de facilement saisir le dispositif entre deux doigts, par exemple en plaçant le pouce sur la paroi plane 12 et l'index sur une des zones d'actionnement 11 ou inversement. L'utilisateur exerce ainsi une pression sur une zone d'actionnement à l'aide de son index ou de son pouce de sorte qu'il peut aisément pulvériser le produit.According to the embodiment shown, the reservoir 10 is configured in the form of a drop of water, but it is obvious that it may have any other shape allowing the deformation of at least one of its walls. It is obtained by molding, in particular by injection molding, for example in one piece, a thermoplastic material, in particular a polyethylene, a polypropylene, a polyethylene terephthalate, a polyethylene naphthalate, a a polyacrylonitrile, a polyoxymethylene, a polyvinyl chloride, or a mixture of these materials. The wall of the tank 10 has several actuating zones 11 of convex shape which are deformable when pressure is exerted on it. These zones are configured so that they do not return to their original position when they stop pressing on them. The reservoir 10 has a flat wall 12. This configuration of the reservoir makes it easy to identify the areas on which the user must exert pressure so that the operation of the device is made obvious. In addition, this configuration makes it easy to grasp the device between two fingers, for example by placing the thumb on the flat wall 12 and the index finger on one of the operating zones 11 or vice versa. The user thus exerts pressure on an actuation area with his index finger or his thumb so that he can easily spray the product.

Le réservoir 10 se termine par un col 13 ouvert, fileté sur sa surface extérieure. Un diffuseur 20 est vissé sur le col du réservoir en étant disposé dans le prolongement de la paroi du réservoir de manière à former l'extrémité de la goutte d'eau. Le diffuseur 20 est muni d'une jupe de fixation 22, filetée sur sa surface intérieure pour venir coopérer avec le col 13 du réservoir 10. Une jupe d'étanchéité 23, cylindrique, est prévue pour venir se loger à l'intérieur du col 13 du réservoir et ainsi assurer l'étanchéité entre l'ouverture du col 13 et le diffuseur. Le diffuseur 20 est obtenu par moulage, par exemple d'une seule pièce, d'un matériau thermoplastique, notamment de polyéthylène ou de polypropylène.The reservoir 10 terminates in an open neck 13, threaded on its outer surface. A diffuser 20 is screwed onto the neck of the reservoir being disposed in the extension of the tank wall so as to form the end of the drop of water. The diffuser 20 is provided with a fixing skirt 22, threaded on its inner surface to cooperate with the neck 13 of the tank 10. A cylindrical sealing skirt 23 is provided to be housed inside the neck 13 of the tank and thus ensure the seal between the opening of the neck 13 and the diffuser. The diffuser 20 is obtained by molding, for example in one piece, a thermoplastic material, especially polyethylene or polypropylene.

Une buse 30 à canaux tourbillonnaires est montée sur le diffuseur 20. L'orifice de pulvérisation 21 est ménagé dans la buse et est en communication avec l'intérieur du réservoir via l'intérieur du col 13. La buse 30 est montée sur le diffuseur par n'importe quel moyen adéquat, par exemple par collage, soudage, serrage, ou encliquetage.A vortex channel nozzle 30 is mounted on the diffuser 20. The spray orifice 21 is formed in the nozzle and is in communication with the interior of the reservoir via the inside of the neck 13. The nozzle 30 is mounted on the diffuser by any suitable means, for example by gluing, welding, clamping, or snapping.

Selon le mode de réalisation illustré aux figures 1 et 2, la zone d'actionnement reste en position déformée lorsque cesse la pression exercée dessus grâce à la géométrie de cette zone qui est en forme de demi-sphère de faible rayon de courbure.According to the embodiment illustrated in Figures 1 and 2 the actuating zone remains in the deformed position when the pressure exerted on it ceases due to the geometry of this zone which is in the shape of a half-sphere of small radius of curvature.

Afin de réaliser une zone d'actionnement qui reste en position déformée lorsqu'on cesse d'exercer une pression dessus, on peut alternativement utiliser une paroi dont l'épaisseur est réduite sur une ligne 14 entourant la zone déformable 11 comme on l'a illustré à la figure 3.In order to provide an actuation zone which remains in a deformed position when pressure is no longer exerted, it is possible to alternatively use a wall whose thickness is reduced on a line 14 surrounding the deformable zone 11 as it has been illustrated at figure 3 .

De manière générale, une telle déformation est obtenue en jouant sur certains paramètres de la paroi, notamment sur la rigidité du matériau utilisé pour former la zone d'actionnement, sur l'épaisseur de la paroi dans cette zone, ou encore sur le rayon de courbure de la zone d'actionnement. On peut jouer sur un seul ou plusieurs de ces paramètres en combinaison.In general, such a deformation is obtained by adjusting certain parameters of the wall, in particular on the rigidity of the material used to form the actuation zone, on the thickness of the wall in this zone, or on the radius of the wall. curvature of the actuation area. One or more of these parameters can be played in combination.

La figure 4 représente un dispositif de pulvérisation dans lequel on a remplacé le diffuseur 20 muni de la buse 30 tel qu'il vient d'être décrit en conformité avec la figure 2 par un simple embout 40 muni d'un orifice de pulvérisation 21. L'embout 40 comporte une jupe de fixation 42 filetée sur sa surface extérieure de manière à être vissée sur le col 13 du récipient 10. L'embout 40 comporte également une jupe d'étanchéité 43 destinée à se loger à l'intérieur du col 13 du réservoir.The figure 4 represents a spraying device in which the diffuser 20 provided with the nozzle 30 as just described has been replaced in accordance with the figure 2 by a simple nozzle 40 provided with a spray orifice 21. The tip 40 has a fixing skirt 42 threaded on its outer surface so as to be screwed onto the neck 13 of the container 10. The tip 40 also comprises a skirt sealing member 43 intended to be housed inside the neck 13 of the tank.

Un tel embout peut également être utilisé dans le mode de réalisation décrit en conformité avec la figure 3.Such a tip can also be used in the embodiment described in accordance with the figure 3 .

Dans les modes de réalisation qui viennent d'être décrits, le réservoir est configuré de manière à générer un spray de bonne qualité. A cet effet, la zone d'actionnement 11 présente un seuil prédéterminé de résistance à la déformation en deçà duquel la paroi se déforme légèrement et au-delà duquel, la paroi se déforme brusquement pour présenter un profil concave comme cela est représenté à la figure 2. Ce seuil est déterminé en fonction de la géométrie de la zone d'actionnement mais aussi de la nature du matériau utilisé pour former cette paroi et enfin de l'épaisseur de la paroi. Ainsi, le réservoir peut passer d'une première position convexe correspondant à sa position non déformée, à une seconde position concave correspondant à sa position déformée. Cette seconde position est préétablie, là encore en fonction de la géométrie de la zone d'actionnement. Pour un réservoir donné, on peut ainsi facilement déterminer le volume déformable, à savoir la variation de volume entre la position non déformée et la position déformée préétablie. En outre, le reste du réservoir n'est sensiblement pas déformé de sorte que, lorsque la zone d'actionnement est déformée, le volume intérieur du réservoir diminue. Une surpression est alors créée à l'intérieur du réservoir qui entraîne la sortie du produit au travers de la buse. Or, cette surpression étant créée de manière très brusque lors du franchissement du seuil, le produit est brusquement poussé à s'écouler hors du réservoir au travers de l'orifice.In the embodiments that have just been described, the reservoir is configured to generate a spray of good quality. For this purpose, the actuating zone 11 has a predetermined threshold of resistance to deformation below which the wall is slightly deformed and beyond which, the wall is sharply deformed to present a concave profile as shown in FIG. figure 2 . This threshold is determined according to the geometry of the operating zone but also the nature of the material used to form this wall and finally the thickness of the wall. Thus, the reservoir can move from a first convex position corresponding to its undistorted position to a second concave position corresponding to its deformed position. This second position is pre-established, again depending on the geometry of the actuation zone. For a given reservoir, it is thus easy to determine the deformable volume, namely the volume variation between the undeformed position and the pre-established deformed position. In addition, the rest of the reservoir is substantially not deformed so that when the actuation zone is deformed, the internal volume of the reservoir decreases. An overpressure is then created inside the reservoir which causes the product to exit through the nozzle. However, this pressure being created very abruptly when crossing the threshold, the product is suddenly forced to flow out of the tank through the orifice.

Afin qu'en position déformée le dispositif puisse générer une pulvérisation de quelques secondes, on choisit le débit moyen de la buse en fonction de la configuration du réservoir et de la viscosité du produit à pulvériser.So that in the deformed position the device can generate a spray of a few seconds, the average flow rate of the nozzle is chosen according to the configuration of the reservoir and the viscosity of the product to be sprayed.

Pour un réservoir donné, on peut déterminer le volume total de produit apte à être expulsé du réservoir en position déformée de la paroi d'actionnement. En effet, ce volume dépend de la viscosité du produit et de la surpression à laquelle il est soumis en position déformée. Plus le produit est visqueux, plus la surpression nécessaire pour le pulvériser sera importante. La surpression est déterminée en fonction du volume déformable du réservoir que l'on peut facilement déterminer comme on l'a vu précédemment. Si on souhaite que ce volume maximum soit pulvérisé pendant N secondes, on choisit alors une buse ayant un débit moyen inférieur ou égal au rapport entre le volume maximum de produit et N.For a given reservoir, it is possible to determine the total volume of product that can be expelled from the reservoir in the deformed position of the actuating wall. Indeed, this volume depends on the viscosity of the product and the overpressure to which it is subjected in the deformed position. The more viscous the product, the higher the pressure required to spray it. The overpressure is determined according to the deformable volume of the reservoir that can be easily determined as previously seen. If it is desired that this maximum volume be pulverized during N seconds, then a nozzle having an average flow rate less than or equal to the ratio between the maximum volume of product and N.

Selon un exemple particulier donné à titre illustratif et non limitatif, on utilise un réservoir 10 réalisé en polyéthylène téréphtalate (PET). Le réservoir présente plusieurs zones d'actionnement qui, en position non déformée présentent chacune un profil convexe qui devient concave en position déformée. Chaque zone d'actionnement à l'état non déformé est en forme de demi-sphère qui a un rayon de courbure de l'ordre de 6 mm. La paroi de chaque zone d'actionnement présente une épaisseur d'environ 0,3 mm. A l'état non déformé, le réservoir a un volume de 7,5 ml. Le réservoir présente un volume déformable de 0,5 ml de sorte que, après déformation d'une première zone d'actionnement, le volume du réservoir est de 7,0 ml. Si on souhaite pulvériser de l'eau pendant environ 5 secondes après enfoncement d'une zone d'actionnement, on choisit une buse ayant un débit moyen de 0,1 ml.According to a particular example given by way of illustration and not limitation, a reservoir 10 made of polyethylene terephthalate (PET) is used. The reservoir has a plurality of operating zones which, in an undeformed position, each have a convex profile which becomes concave in the deformed position. Each operating zone in the undeformed state is in the shape of a half-sphere which has a radius of curvature of the order of 6 mm. The wall of each operating zone has a thickness of about 0.3 mm. In the undeformed state, the reservoir has a volume of 7.5 ml. The reservoir has a deformable volume of 0.5 ml so that, after deformation of a first actuation zone, the volume of the reservoir is 7.0 ml. If it is desired to spray water for about 5 seconds after depressing an actuation zone, a nozzle having an average flow rate of 0.1 ml is selected.

Dans la description détaillée qui précède, il a été fait référence à des modes de réalisation préférés de l'invention. Il est évident que des variantes peuvent y être apportées sans s'écarter de l'esprit de l'invention telle que revendiquée ci-après.In the foregoing detailed description, reference has been made to preferred embodiments of the invention. It is obvious that variations may be made without departing from the spirit of the invention as claimed hereinafter.

Claims (12)

  1. Device for dispensing a fluid product comprising a reservoir (10) containing the said product and equipped with a spray orifice (21), the said reservoir (10) having a wall provided with at least one actuating zone (11) that can be deformed in response to pressure exerted on the said zone (11) so as to cause the product to be sprayed out through the orifice (21), the said actuating zone (11) having a predetermined threshold resistance to deformation so that before the exerted pressure reaches a pressure Ps which is necessary and sufficient to overcome the said predetermined threshold resistance to deformation, the volume of product sprayed is practically zero, characterized in that the wall is configured in such a way that its deformation is not linearly dependent on the pressure exerted on it in order to deform it, such that the deformation resulting from the exerting of the said pressure Ps on the said actuating zone (11) persists when the said pressure Ps ceases.
  2. Device according to Claim 1, characterized in that it is configured in such a way that the said deformation of an actuating zone (11) causes the product to be sprayed for a duration longer than one second.
  3. Device according to Claim 1, characterized in that it is configured in the form of a sample dose containing a cosmetic product, particularly a scent, the device being furthermore configured in such a way that the said deformation of a deformable zone (11) causes the product to be sprayed for a duration of between 2 s and 45 s, preferably between 2 s and 10 s.
  4. Device according to any one of Claims 1 to 3, characterized in that the said actuating zone (11) has a more or less convex profile in its undeformed position, particularly in the shape of a dome, and a more or less concave profile in its deformed position.
  5. Device according to any one of the preceding claims, characterized in that the said actuating zone (11) is delimited by a line of lesser thickness (12).
  6. Device according to any one of the preceding claims, characterized in that the actuating zone (11) of the reservoir is formed of at least one layer of a thermoplastic or metallic material.
  7. Device according to any one of the preceding claims, characterized in that the wall of the reservoir (10) has a number of deformable zones (11).
  8. Device according to Claim 7, characterized in that all the actuating zones (11) deform practically identically.
  9. Device according to Claim 7, characterized in that at least two actuating zones (11) deform differently.
  10. Device according to any one of the preceding claims, characterized in that the spray orifice (21) is formed in a diffuser (20) produced in the form of a nozzle with one or more swirl-inducing ducts (22).
  11. Device according to any one of the preceding claims, characterized in that the diffuser (20) is mounted on the reservoir (10) particularly by snap-fastening or screw-fastening.
  12. Use of a device according to any one of the preceding claims for packaging and spraying a sample dose of a cosmetic product, particularly of a scent.
EP02291402A 2001-06-22 2002-06-06 Device for spraying a product, especially in form of sample metering Expired - Lifetime EP1270431B1 (en)

Applications Claiming Priority (2)

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FR0108280 2001-06-22
FR0108280A FR2826344B1 (en) 2001-06-22 2001-06-22 DEVICE FOR SPRAYING A PRODUCT, PARTICULARLY IN THE FORM OF A SAMPLE DOSE

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EP (1) EP1270431B1 (en)
JP (1) JP3816030B2 (en)
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DE (1) DE60228790D1 (en)
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CA2389874A1 (en) 2002-12-22
DE60228790D1 (en) 2008-10-23
CA2389874C (en) 2007-07-31
ATE407888T1 (en) 2008-09-15
FR2826344B1 (en) 2003-09-05
JP2003093151A (en) 2003-04-02
US6715697B2 (en) 2004-04-06
JP3816030B2 (en) 2006-08-30
FR2826344A1 (en) 2002-12-27
ES2312532T3 (en) 2009-03-01
US20030010795A1 (en) 2003-01-16
EP1270431A1 (en) 2003-01-02

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