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EP0975433B1 - Flask for dispensing liquid, cream or gel comprising a device for filtering incoming air - Google Patents

Flask for dispensing liquid, cream or gel comprising a device for filtering incoming air Download PDF

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Publication number
EP0975433B1
EP0975433B1 EP98922882A EP98922882A EP0975433B1 EP 0975433 B1 EP0975433 B1 EP 0975433B1 EP 98922882 A EP98922882 A EP 98922882A EP 98922882 A EP98922882 A EP 98922882A EP 0975433 B1 EP0975433 B1 EP 0975433B1
Authority
EP
European Patent Office
Prior art keywords
pump
air
diffuser element
dispenser
dispenser according
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
EP98922882A
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German (de)
French (fr)
Other versions
EP0975433A1 (en
Inventor
Pascal Hennemann
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
Rexam Dispensing Systems SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
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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
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • 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
    • B05B11/0005—Components or details
    • B05B11/0008—Sealing or attachment arrangements between sprayer and container

Definitions

  • the present invention relates to a product distributor packaged in liquid form, and more particularly intended for cosmetic, dermatological, pharmaceutical, ophthalmic applications or perfumery. It relates more particularly to a distributor comprising a bottle or product reservoir, and an end valve closure member and / or a pump with nozzle, whose surfaces in contact with the active ingredient have been designed to filter and treat the air entering the tank.
  • the product is packaged in a flexible, deformable pocket forming a reservoir, connected to a pump without recovery air, commonly known as an "airless" pump.
  • a pump without recovery air commonly known as an "airless” pump.
  • the latter is attached to a bottle rigid, thereby trapping the flexible pouch inside the bottle.
  • the bag contracts by reducing its capacity by a volume equivalent to the volume withdrawn, and thus inducing a deformation of the reservoir.
  • the product is packaged in a cylindrical bottle, the bottom of which is provided with a movable follower piston.
  • the piston rises in the bottle thus reducing the capacity of the bottle by one volume equivalent to the volume withdrawn.
  • Glass bottles therefore contain liquid products with a filling rate of 50% compared to the total volume of the bottle, in order to guarantee at the end of emptying the pressure threshold of 0.5 bar.
  • the major drawback of this embodiment lies in the ratio unfavorable between the useful volume and the total volume and therefore in the additional cost generated by the packaging volume.
  • the disadvantage of this embodiment lies in the fact that the air is passed through the wall of the bottle, then through the liquid, this which has the effect of slowing the air diffusion and the replacement speed of the dose taken.
  • the present invention aims to solve all of the problems techniques related to the embodiments previously described, by proposing a filtration and treatment system for the return air flow, which overcomes so-called "airless" preservation systems and offers filtered air, free of bacteria and / or with modification of the oxygen level.
  • This distributor which is not limited to liquids and creams, allows a filling rate between 90 and 99% of the total volume of the tank.
  • the dispenser comprises a product reservoir connected by one of its ends to a head provided with a pump equipped with a controlled means for closing the vent made on the body of said pump and a fixing sleeve; said sealing means comprising an air permeable diffusion element containing non-migrant agents for bacteriological and / or chemical treatment of air by contact; characterized in that said element is fitted on the pump body and retained by peripheral radial tightening watertight at least one annular zone on the one hand, and by engagement of its part high in the fixing sleeve, on the other hand.
  • Patent publication EP-A-0 189 549 proposes a dispensing bottle according to the preamble of claim 1.
  • the diffusion element is a porous core forming an annular section filter which is fitted directly onto the pump body and whose pore size is between 5 ⁇ m and 10 ⁇ m.
  • the average porosity of the diffusion element is substantially equal to 7 ⁇ m, with a void rate between 40 and 60%;
  • the diffusion element is an elastically deformable sleeve delimiting around the pump body a flexible pocket of variable volume and the membrane wall of which is made with a material of intrinsic air permeability of between 300 and 5000 mm 3/24 h.
  • said material also contains fillers porous.
  • the material constituting the diffusion element contains antioxidant, bactericidal treatment agents, antiseptic, atmosphere modifier in independent or combined form.
  • the diffusion element used in the dispenser of the invention does not constitute a physical barrier preventing the passage of bacteria as in earlier distributors, but forms either a filter or a membrane providing a significant exchange surface for the incoming air for its treatment bacteriological and / or chemical by contact within the element with agents non-migrants.
  • both the dimensions of the filter pores and the permeability selective membrane combined with the surface tension properties of materials used prohibit the passage of liquids, which makes the element of hydrophobic diffusion and prevents bacterial proliferation in the tank.
  • Figure 1 is a sectional view, in elevation of a first mode of realization of the invention.
  • Figure 2 is a sectional view, in elevation, of a second mode of realization of the invention.
  • the dispenser of the invention comprises a reservoir 1 containing the produces 2 in the form of a liquid, cream or gel.
  • This tank 1 preferably rigid or flexible, comprises at one of its ends a head provided with a end valve or air return pump 4 with a cover or nozzle 5.
  • the body 41 of the pump 4 is extended downwards by a dip tube 42 bathing in product 2.
  • the head further includes a locked fixing sleeve 3 on the end of the tank 1 for example, by snap-fastening and in which is trapped the upper edge 4 la of the body 41 of the pump 4.
  • the body 41 of the pump 4 which is of the atmospheric type, comprises therefore a vent hole 40 which makes it possible to replace the withdrawn dose of product liquid 2, in tank 1, by an equivalent volume of air, thus restoring equal pressure between the surrounding environment and the interior of the tank 1.
  • the body 41 of the pump 4 has at the vent hole 40 a controlled closure means.
  • This closure means which is intended to mask the hole 40, comprises an element air permeable 6 and containing non-migrant agents for the bacteriological and / or chemical treatment of air, by contact.
  • Element 6 preferably cylindrical-conical like body 41, is fitted on this body and is retained there, in the closed position of the vent 40, by tight radial peripheral tightening of at least one annular zone, on the one hand, and by engagement of its upper part in the fixing sleeve 3, on the other hand.
  • the bacteriological and / or chemical agents are chosen to provide treatment bactericide, antiseptic, antioxidant or atmosphere modifier (dehumidifier) by contact. These agents are non-migrants, i.e. they remain fixed within the polymer network of the material constituting the diffusion element.
  • the diffusion element cylindroconical 6 consists of a porous core 61 of annular section forming filter which is fitted directly onto the body 41 of the pump 4.
  • the element 61 has, for a pump body 41 whose height is 21 mm, a height of 2 to 10 mm and preferably 7 mm and a thickness of 2 to 3 mm and preferably 2.3 mm.
  • the element 61 is in radial clamping over its entire height over body 41.
  • the average pore size is between 5 and 10 ⁇ m and preferably between 7 to 10 ⁇ m with a vacuum rate between 40 and 60%.
  • the diffusion element 61 offers a large exchange surface between the air and the porous material constituting the filter which contains the treatment.
  • the path of the air containing the bacteria is therefore relatively long and narrow, which ensures sufficient contact time to make the effective bacteriological and / or chemical air treatment.
  • the pore dimensions are less than or equal to 10 ⁇ m, which, combined with the use of plastics such as polyethylene and / or polypropylene, prohibits the passage of liquids and thus avoids any risk of bacterial growth in the reservoir 1.
  • the upper part 61a of the porous core 61 has a profile and a geometry adapted to the upper part of the socket 3.
  • the fixing sleeve 3 comprises a crown internal cylindrical 30 which covers the upper end of the reservoir 1 in being in tight contact with the internal wall. Crown 30 extends towards the high by a shoulder 31 delimiting a hooking zone for the upper edge 41a of the body 41 of the pump 4.
  • the upper part of the core 61 comprises a constriction 61a which comes lodge in a complementary manner in the space provided under the edge 41a of the body 41 inside the crown 30.
  • the diffusion element 6 is consisting of an elastically deformable cylindroconical sleeve 62, delimiting around the body 41 of the pump 4 a flexible pocket 60 of variable volume.
  • the wall of the pouch 60 thus forms a membrane made with an intrinsic permeability material in the air between 300 and 5000 mm 3/24 h.
  • the air volume of the bag 60 at rest is between 100 mm 3 and 800 mm 3 for a pump body whose height is 21 mm and thus offers an exchange surface of between 3 and 10 cm 2 .
  • the upper part of the sleeve 62 has a cylindrical skirt 62a of greater thickness which is tightly engaged inside the crown 30 of the socket 3.
  • the lower part of the sleeve 62 has an area annular 62b in sealed peripheral radial tightening around the body 41 of the pump 4.
  • the sleeve 62 is made, for example, with silicone, polypropylene or polyethylene or mixtures thereof.
  • the element 6, especially when it is in the form of an annular core by a molding operation simultaneous with that of the pump body.
  • the three-dimensional network of selected macro-molecules forming the annular core pores 61 allows the diffusion of filtered air, but prevents passage contaminants and / or denaturants for the product contained in the tank.
  • the tank By the choice of its constituent materials, the tank is rigid and therefore retains its shape and volume after distribution of the product. expulsion of the product generates a vacuum in the tank and therefore a differential of pressure between inside and outside of the tank. This pressure differential ensures the distribution towards the inside of the distributor of a corresponding volume of air the volume of liquid product discharged with a flow rate which depends on the characteristics of permeability and dimensions of the diffusion element.
  • the present invention offers multiple advantages because it allows reduce the toxicity of the product contained in the tank by the absence of agents antibacterial and / or oxygen preservatives.
  • Use of the dispenser according to the invention is therefore carried out in a sterile manner, with volume compensation sampled, thus making it possible to offer a useful volume of up to 99% and without affect the efficiency of the pump.

Landscapes

  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Cosmetics (AREA)
  • Medicinal Preparation (AREA)
  • Confectionery (AREA)
  • Food-Manufacturing Devices (AREA)
  • Coating Apparatus (AREA)
  • Dairy Products (AREA)
  • Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)

Abstract

A dispenser for substances packaged in the form of a liquid, cream, or gel, and particularly intended for cosmetic, dermatological, pharmaceutical, ophthalmic, or perfumery applications. The dispenser includes a tank (1) containing the substance (2) and is connected at one of its ends to a head provided with a pump (4) fitted with a fixing collar (3) and with a controlled shutter device for the vent (40) formed on the body (41) of the pump (4). The shutter device includes an air-permeable diffuser element (6) containing non-migratory agents for bacteriological and/or chemical treatment of air by contact. The diffuser element (6) is engaged on the pump body (41) and held by leakproof peripheral radial clamping of at least one annular zone, and by its top portion being engaged in the fixing collar.

Description

La présente invention est relative à un distributeur de produits conditionnés sous forme de liquide, et plus particulièrement destinés à des applications cosmétiques, dermatologiques, pharmaceutiques, ophtalmiques ou en parfumerie. Elle vise plus particulièrement un distributeur comprenant un flacon ou réservoir de produit, et un organe de fermeture à clapet d'extrémité et/ou une pompe avec embout, dont les surfaces en contact avec le principe actif ont été conçues afin de filtrer et de traiter l'air entrant à l'intérieur du réservoir.The present invention relates to a product distributor packaged in liquid form, and more particularly intended for cosmetic, dermatological, pharmaceutical, ophthalmic applications or perfumery. It relates more particularly to a distributor comprising a bottle or product reservoir, and an end valve closure member and / or a pump with nozzle, whose surfaces in contact with the active ingredient have been designed to filter and treat the air entering the tank.

De manière connue, on relève quatre modes de réalisation permettant de garantir le caractère stérile du produit contenu dans les réservoirs des distributeurs.In known manner, there are four embodiments allowing to guarantee the sterile nature of the product contained in the dispensers' tanks.

Selon un premier mode de réalisation, le produit est conditionné dans une poche souple, déformable formant réservoir, reliée à une pompe sans reprise d'air, communément appelée pompe "airless". Cette dernière est fixée à un flacon rigide, en emprisonnant de ce fait la poche souple à l'intérieur du flacon. Au fur et à mesure du prélèvement par action de l'utilisateur sur la pompe, la poche se contracte en réduisant sa capacité d'un volume équivalent au volume prélevé, et induisant ainsi une déformation du réservoir.According to a first embodiment, the product is packaged in a flexible, deformable pocket forming a reservoir, connected to a pump without recovery air, commonly known as an "airless" pump. The latter is attached to a bottle rigid, thereby trapping the flexible pouch inside the bottle. As and when measurement of the sample by user action on the pump, the bag is contracts by reducing its capacity by a volume equivalent to the volume withdrawn, and thus inducing a deformation of the reservoir.

Les inconvénients de ce mode particulier de réalisation résident d'une part dans la présence de deux emballages (poche et flacon) qui grèvent le coût de fabrication et d'autre part dans le ratio défavorable entre le volume utile et le volume total. En outre, les opérations de remplissage et de conditionnement sont délicates en particulier pour les produits en crèmes.The disadvantages of this particular embodiment reside in a part in the presence of two packages (pocket and bottle) which increase the cost of manufacturing and secondly in the unfavorable ratio between the useful volume and the total volume. In addition, the filling and packaging operations are particularly delicate for cream products.

Selon un deuxième mode de réalisation, le produit est conditionné dans un flacon cylindrique dont le fond est pourvu d'un piston suiveur mobile. Au fur et à mesure du prélèvement du produit par la pompe "airless", le piston remonte dans le flacon entraínant ainsi une réduction de la capacité du flacon d'un volume équivalent au volume prélevé.According to a second embodiment, the product is packaged in a cylindrical bottle, the bottom of which is provided with a movable follower piston. As and as the product is withdrawn by the "airless" pump, the piston rises in the bottle thus reducing the capacity of the bottle by one volume equivalent to the volume withdrawn.

Les inconvénients de ce mode de réalisation resident principalement dans le coût de l'emballage, et dans son inefficacité pour la distribution de liquide.The disadvantages of this embodiment lie mainly in the cost of the packaging, and in its ineffectiveness for the distribution of liquid.

Dans un troisième mode de réalisation, surtout destiné à la distribution de liquides, on connecte une pompe "airless" à un flacon en verre qui est donc indéformable. Ces pompes "airless" sont capables de fonctionner sous une pression de 0,5 bar à l'intérieur du flacon, tout en assurant une bonne régularité de dose.In a third embodiment, especially intended for distribution of liquids, we connect an "airless" pump to a glass bottle which is therefore dimensionally stable. These "airless" pumps are capable of operating under pressure 0.5 bar inside the bottle, while ensuring good dose consistency.

Les flacons de verre contiennent donc des produits liquides avec un taux de remplissage de 50 % par rapport au volume total du flacon, afin de garantir en fin de vidange le seuil de pression de 0,5 bar. Glass bottles therefore contain liquid products with a filling rate of 50% compared to the total volume of the bottle, in order to guarantee at the end of emptying the pressure threshold of 0.5 bar.

L'inconvénient majeur de ce mode de réalisation réside dans le rapport défavorable entre le volume utile et le volume total et donc dans le surcoût généré par le volume d'emballage.The major drawback of this embodiment lies in the ratio unfavorable between the useful volume and the total volume and therefore in the additional cost generated by the packaging volume.

Dans le dernier mode de réalisation connu, qui a fait l'objet de la demande de brevet français FR-A- 2 740 431 du même titulaire, on utilise une pompe "airless" connectée à un flacon en matière plastique dont les parois sont perméables à l'air.In the last known embodiment, which was the subject of the French patent application FR-A- 2 740 431 by the same owner, a pump is used "airless" connected to a plastic bottle whose walls are permeable to the air.

L'inconvénient de ce mode de réalisation réside dans le fait que le passage de l'air s'effectue à travers la paroi du flacon, puis à travers le liquide, ce qui a pour effet de ralentir la diffusion de l'air et la vitesse de remplacement de la dose prélevée.The disadvantage of this embodiment lies in the fact that the air is passed through the wall of the bottle, then through the liquid, this which has the effect of slowing the air diffusion and the replacement speed of the dose taken.

En cas d'utilisation intensive et rapide du distributeur, il se produit une dépression dans le flacon qui risque de dépasser la limite de fonctionnement de la pompe.In case of intensive and rapid use of the dispenser, a depression in the bottle which may exceed the operating limit of the pump.

La présente invention vise à résoudre l'ensemble des problèmes techniques liés aux modes de réalisation précédemment décrits, en proposant un système de filtration et de traitement du débit de reprise d'air, qui s'affranchit des systèmes de conservation dits "airless" et propose un air filtré, sans bactéries et/ou avec modification du taux d'oxygène. Ce distributeur, qui n'est pas limité aux liquides et aux crèmes, autorise un taux de remplissage compris entre 90 et 99 % du volume total du réservoir.The present invention aims to solve all of the problems techniques related to the embodiments previously described, by proposing a filtration and treatment system for the return air flow, which overcomes so-called "airless" preservation systems and offers filtered air, free of bacteria and / or with modification of the oxygen level. This distributor, which is not limited to liquids and creams, allows a filling rate between 90 and 99% of the total volume of the tank.

Selon l'invention, le distributeur comprend un réservoir de produit raccordé par l'une de ses extrémités à une tête pourvue d'une pompe équipée d'un moyen d'obturation contrôlée de l'évent réalisé sur le corps de ladite pompe et d'une douille de fixation; ledit moyen d'obturation comprenant un élément de diffusion perméable à l'air et contenant des agents non migrants pour le traitement bactériologique et/ou chimique de l'air par contact ; caractérisé en ce que ledit élément est emboíté sur le corps de pompe et retenu par serrage radial périphérique étanche d'au moins une zone annulaire d'une part, et par engagement de sa partie haute dans la douille de fixation, d 'autre part.According to the invention, the dispenser comprises a product reservoir connected by one of its ends to a head provided with a pump equipped with a controlled means for closing the vent made on the body of said pump and a fixing sleeve; said sealing means comprising an air permeable diffusion element containing non-migrant agents for bacteriological and / or chemical treatment of air by contact; characterized in that said element is fitted on the pump body and retained by peripheral radial tightening watertight at least one annular zone on the one hand, and by engagement of its part high in the fixing sleeve, on the other hand.

La publication de brevet EP-A-0 189 549 propose un flacon de distribution suivant le préambule de la revendication 1.Patent publication EP-A-0 189 549 proposes a dispensing bottle according to the preamble of claim 1.

Selon un premier mode de réalisation, l'élément de diffusion est un noyau poreux formant filtre de section annulaire qui est emmanché directement sur le corps de pompe et dont la dimension des pores est comprise entre 5 µm et 10 µm.According to a first embodiment, the diffusion element is a porous core forming an annular section filter which is fitted directly onto the pump body and whose pore size is between 5 μm and 10 µm.

De préférence, la porosité moyenne de l'élément de diffusion est sensiblement égale à 7 µm, avec un taux de vide compris entre 40 et 60 %; Preferably, the average porosity of the diffusion element is substantially equal to 7 µm, with a void rate between 40 and 60%;

Selon un second mode de réalisation, l'élément de diffusion est un manchon élastiquement déformable délimitant autour du corps de pompe une poche souple de volume variable et dont la paroi formant membrane est réalisée avec un matériau de perméabilité intrinsèque à l'air comprise entre 300 et 5 000 mm3/24 h.According to a second embodiment, the diffusion element is an elastically deformable sleeve delimiting around the pump body a flexible pocket of variable volume and the membrane wall of which is made with a material of intrinsic air permeability of between 300 and 5000 mm 3/24 h.

Selon une variante, ledit matériau contient en outre des charges poreuses.According to a variant, said material also contains fillers porous.

Selon une caractéristique avantageuse, la matière constitutive de l'élément de diffusion contient des agents de traitement antioxydant, bactéricide, antiseptique, modificateur d'atmosphère sous forme indépendante ou combinée.According to an advantageous characteristic, the material constituting the diffusion element contains antioxidant, bactericidal treatment agents, antiseptic, atmosphere modifier in independent or combined form.

L'élément de diffusion utilisé dans le distributeur de l'invention ne constitue pas une barrière physique interdisant le passage des bactéries comme dans les distributeurs antérieurs, mais forme soit un filtre, soit une membrane offrant une surface d'échange importante à l'air entrant pour son traitement bactériologique et/ou chimique par contact au sein de l'élément avec des agents non migrants.The diffusion element used in the dispenser of the invention does not does not constitute a physical barrier preventing the passage of bacteria as in earlier distributors, but forms either a filter or a membrane providing a significant exchange surface for the incoming air for its treatment bacteriological and / or chemical by contact within the element with agents non-migrants.

Par ailleurs, tant les dimensions des pores du filtre que la perméabilité sélective de la membrane combinées aux propriétés de tension superficielle des matériaux utilisés interdisent le passage des liquides, ce qui rend l'élément de diffusion hydrophobe et permet d'éviter la prolifération bactérienne dans le réservoir.Furthermore, both the dimensions of the filter pores and the permeability selective membrane combined with the surface tension properties of materials used prohibit the passage of liquids, which makes the element of hydrophobic diffusion and prevents bacterial proliferation in the tank.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après, en référence aux dessins annexés qui en illustrent des exemples de réalisation dépourvus de tout caractère limitatif.Other features and advantages of the present invention will emerge from the description given below, with reference to the accompanying drawings which illustrate exemplary embodiments devoid of any limiting character.

La figure 1 est une vue en coupe, en élévation d'un premier mode de réalisation de l'invention.Figure 1 is a sectional view, in elevation of a first mode of realization of the invention.

La figure 2 est une vue en coupe, en élévation, d'un second mode de réalisation de l'invention.Figure 2 is a sectional view, in elevation, of a second mode of realization of the invention.

Le distributeur de l'invention comprend un réservoir 1 contenant le produit 2 sous forme de liquide, de crème ou de gel. Ce réservoir 1 préférentiellement rigide ou souple, comprend à l'une de ses extrémités une tête pourvue d'un clapet d'extrémité ou d'une pompe 4 à reprise d'air avec un capot ou embout 5. Le corps 41 de la pompe 4 se prolonge vers le bas par un tube plongeur 42 baignant dans le produit 2. La tête comprend en outre une douille de fixation 3 verrouillée sur l'extrémité du réservoir 1 par exemple, par encliquetage et dans laquelle est emprisonné le bord supérieur 4 la du corps 41 de la pompe 4. The dispenser of the invention comprises a reservoir 1 containing the produces 2 in the form of a liquid, cream or gel. This tank 1 preferably rigid or flexible, comprises at one of its ends a head provided with a end valve or air return pump 4 with a cover or nozzle 5. The body 41 of the pump 4 is extended downwards by a dip tube 42 bathing in product 2. The head further includes a locked fixing sleeve 3 on the end of the tank 1 for example, by snap-fastening and in which is trapped the upper edge 4 la of the body 41 of the pump 4.

Le corps 41 de la pompe 4, qui est du type atmosphérique, comporte donc un trou d'évent 40 qui permet de remplacer la dose prélevée de produit liquide 2, dans le réservoir 1, par un volume d'air équivalent, rétablissant ainsi l'égalité de pression entre le milieu environnant et l'intérieur du réservoir 1.The body 41 of the pump 4, which is of the atmospheric type, comprises therefore a vent hole 40 which makes it possible to replace the withdrawn dose of product liquid 2, in tank 1, by an equivalent volume of air, thus restoring equal pressure between the surrounding environment and the interior of the tank 1.

Selon une caractéristique avantageuse de l'invention, le corps 41 de la pompe 4, comporte au niveau du trou d'évent 40 un moyen d'obturation contrôlée. Ce moyen d'obturation qui est destiné à masquer le trou 40, comprend un élément de diffusion 6 perméable à l'air et contenant des agents non migrants pour le traitement bactériologique et/ou chimique de l'air, par contact.According to an advantageous characteristic of the invention, the body 41 of the pump 4, has at the vent hole 40 a controlled closure means. This closure means which is intended to mask the hole 40, comprises an element air permeable 6 and containing non-migrant agents for the bacteriological and / or chemical treatment of air, by contact.

L'élément 6, de préférence cylindroconique comme le corps 41, est emboíté sur ce corps et y est retenu, en position d'obturation de l'évent 40, par serrage radial périphérique étanche d'au moins une zone annulaire, d'une part, et par engagement de sa partie haute dans la douille de fixation 3, d'autre part. Les agents bactériologiques et/ou chimiques sont choisis pour assurer un traitement bactéricide, antiseptique, antioxydant ou modificateur d'atmosphère (déshumidificateur) par contact. Ces agents sont non migrants, c'est-à-dire qu'ils restent fixés au sein du réseau polymère de la matière constitutive de l'élément de diffusion.Element 6, preferably cylindrical-conical like body 41, is fitted on this body and is retained there, in the closed position of the vent 40, by tight radial peripheral tightening of at least one annular zone, on the one hand, and by engagement of its upper part in the fixing sleeve 3, on the other hand. The bacteriological and / or chemical agents are chosen to provide treatment bactericide, antiseptic, antioxidant or atmosphere modifier (dehumidifier) by contact. These agents are non-migrants, i.e. they remain fixed within the polymer network of the material constituting the diffusion element.

Dans le mode de réalisation de la figure 1, l'élément de diffusion cylindroconique 6 est constitué d'un noyau poreux 61 de section annulaire formant filtre qui est emmanché directement sur le corps 41 de la pompe 4.In the embodiment of Figure 1, the diffusion element cylindroconical 6 consists of a porous core 61 of annular section forming filter which is fitted directly onto the body 41 of the pump 4.

L'élément 61 présente, pour un corps 41 de pompe dont la hauteur est de 21 mm, une hauteur de 2 à 10 mm et de préférence de 7 mm et une épaiseur de 2 à 3 mm et de préférence 2,3 mm. L'élément 61 est en serrage radial sur toute sa hauteur sur le corps 41.The element 61 has, for a pump body 41 whose height is 21 mm, a height of 2 to 10 mm and preferably 7 mm and a thickness of 2 to 3 mm and preferably 2.3 mm. The element 61 is in radial clamping over its entire height over body 41.

Par ailleurs, la dimension moyenne des pores est comprise entre 5 et 10 µm et de préférence entre 7 à 10 µm avec un taux de vide compris entre 40 et 60 %.Furthermore, the average pore size is between 5 and 10 µm and preferably between 7 to 10 µm with a vacuum rate between 40 and 60%.

Ainsi, l'élément de diffusion 61 offre une surface d'échange importante entre l'air et la matière poreuse constitutive du filtre qui contient les agents de traitement. Le chemin de l'air contenant les bactéries est donc relativement long et étroit, ce qui permet d'assurer une durée de contact suffisante pour rendre le traitement bactériologique et/ou chimique de l'air efficace.Thus, the diffusion element 61 offers a large exchange surface between the air and the porous material constituting the filter which contains the treatment. The path of the air containing the bacteria is therefore relatively long and narrow, which ensures sufficient contact time to make the effective bacteriological and / or chemical air treatment.

En outre, les dimensions des pores sont inférieures ou égales à 10 µm, ce qui, combiné à l'utilisation de matières plastiques telles que le polyéthylène et/ou le polypropylène, interdit le passage des liquides et évite ainsi tout risque de prolifération bactérienne dans le réservoir 1. In addition, the pore dimensions are less than or equal to 10 μm, which, combined with the use of plastics such as polyethylene and / or polypropylene, prohibits the passage of liquids and thus avoids any risk of bacterial growth in the reservoir 1.

La partie haute 61a du noyau poreux 61 a un profil et une géométrie adaptés à la partie supérieure de la douille 3.The upper part 61a of the porous core 61 has a profile and a geometry adapted to the upper part of the socket 3.

Plus précisément, la douille de fixation 3 comporte une couronne interne cylindrique 30 qui vient coiffer l'extrémité supérieure du réservoir 1 en étant en contact étanche avec la paroi interne. La couronne 30 se prolonge vers le haut par un épaulement 31 délimitant une zone d'accrochage pour le bord supérieur 41a du corps 41 de la pompe 4.More specifically, the fixing sleeve 3 comprises a crown internal cylindrical 30 which covers the upper end of the reservoir 1 in being in tight contact with the internal wall. Crown 30 extends towards the high by a shoulder 31 delimiting a hooking zone for the upper edge 41a of the body 41 of the pump 4.

La partie haute du noyau 61 comprend un rétreint 61a qui vient se loger de façon complémentaire dans l'espace ménagé sous le bord 41a du corps 41 à l'intérieur de la couronne 30.The upper part of the core 61 comprises a constriction 61a which comes lodge in a complementary manner in the space provided under the edge 41a of the body 41 inside the crown 30.

Dans le mode de réalisation de la figure 2, l'élément de diffusion 6 est constitué d'un manchon cylindroconique élastiquement déformable 62, délimitant autour du corps 41 de la pompe 4 une poche souple 60 de volume variable.In the embodiment of FIG. 2, the diffusion element 6 is consisting of an elastically deformable cylindroconical sleeve 62, delimiting around the body 41 of the pump 4 a flexible pocket 60 of variable volume.

La paroi de la poche 60 forme ainsi une membrane réalisée avec un matériau de perméabilité intrinsèque à l'air comprise entre 300 et 5 000 mm3/24 h.The wall of the pouch 60 thus forms a membrane made with an intrinsic permeability material in the air between 300 and 5000 mm 3/24 h.

Le volume d'air de la poche 60 au repos est compris entre 100 mm3 et 800 mm3 pour un corps de pompe dont la hauteur est de 21 mm et offre ainsi une surface d'échange comprise entre 3 et 10 cm2.The air volume of the bag 60 at rest is between 100 mm 3 and 800 mm 3 for a pump body whose height is 21 mm and thus offers an exchange surface of between 3 and 10 cm 2 .

La partie haute du manchon 62 comporte une jupe cylindrique 62a d'épaisseur plus importante qui est engagée de façon étanche à l'intérieur de la couronne 30 de la douille 3. La partie basse du manchon 62 comporte une zone annulaire 62b en serrage radial périphérique étanche autour du corps 41 de la pompe 4. Le manchon 62 est réalisé, par exemple, avec du silicone, du polypropylène ou du polyéthylène ou bien des mélanges de ces derniers.The upper part of the sleeve 62 has a cylindrical skirt 62a of greater thickness which is tightly engaged inside the crown 30 of the socket 3. The lower part of the sleeve 62 has an area annular 62b in sealed peripheral radial tightening around the body 41 of the pump 4. The sleeve 62 is made, for example, with silicone, polypropylene or polyethylene or mixtures thereof.

Si la perméabilité intrinsèque à l'air du matériau utilisé est insuffisante au regard des valeurs recherchées, il est possible d'incorporer dans cette matière des charges plus perméables et le cas échéant des charges poreuses.If the intrinsic air permeability of the material used is insufficient with regard to the values sought, it is possible to incorporate into this material more permeable fillers and, where appropriate, porous fillers.

Selon une variante non représentée, il est possible de réaliser l'élément de diffusion 6, notamment lorsqu'il est en forme de noyau annulaire par une opération de moulage simultanée à celle du corps de pompe.According to a variant not shown, it is possible to produce the element 6, especially when it is in the form of an annular core by a molding operation simultaneous with that of the pump body.

De manière générale, l'élément de diffusion 6 peut être réalisé avec

  • des matériaux plastiques obtenus par frittage et donc poreux,
  • des matériaux plastiques injectés, notamment des polymères thermoplastiques tels que des polyoléfines, PVC, silicones et polymères techniques, et dont les propriétés de perméabilité à l'air sont élevées, contenant des additifs poreux tels que des charges de type calcaire et/ou tout autre type permettant d'augmenter le passage de l'air au travers du réseau macro-moléculaire, dont le taux est compris entre 20 et 80 %.
In general, the diffusion element 6 can be produced with
  • plastic materials obtained by sintering and therefore porous,
  • injected plastic materials, in particular thermoplastic polymers such as polyolefins, PVC, silicones and technical polymers, and whose air permeability properties are high, containing porous additives such as fillers of the limestone type and / or any other type allowing to increase the passage of air through the macro-molecular network, the rate of which is between 20 and 80%.

Le réseau tridimensionnel des macro-molécules choisies formant les pores du noyau annulaire 61 permet la diffusion de l'air filtré, mais évite le passage d'agents contaminants et/ou dénaturants pour le produit contenu dans le réservoir.The three-dimensional network of selected macro-molecules forming the annular core pores 61 allows the diffusion of filtered air, but prevents passage contaminants and / or denaturants for the product contained in the tank.

De par le choix de ses matériaux constitutifs, le réservoir est rigide et conserve donc sa forme et son volume après distribution du produit. L'expulsion du produit génère une dépression dans le réservoir et donc un différentiel de pression entre l'intérieur et l'extérieur du réservoir. Ce différentiel de pression assure la diffusion vers l'intérieur du distributeur d'un volume d'air correspondant au volume de produit liquide évacué avec un débit qui dépend des caractéristiques de perméabilité et des dimensions de l'élément de diffusion..By the choice of its constituent materials, the tank is rigid and therefore retains its shape and volume after distribution of the product. expulsion of the product generates a vacuum in the tank and therefore a differential of pressure between inside and outside of the tank. This pressure differential ensures the distribution towards the inside of the distributor of a corresponding volume of air the volume of liquid product discharged with a flow rate which depends on the characteristics of permeability and dimensions of the diffusion element.

La présente invention offre de multiples avantages car elle permet de réduire la toxicité du produit contenu dans le réservoir de par l'absence d'agents conservateurs antibactériens et/ou anti-oxygène. L'utilisation du distributeur selon l'invention s'effectue donc de manière stérile, avec compensation du volume prélevé, permettant ainsi d'offrir un volume utile pouvant atteindre 99 % et sans nuire à l'efficacité de la pompe.The present invention offers multiple advantages because it allows reduce the toxicity of the product contained in the tank by the absence of agents antibacterial and / or oxygen preservatives. Use of the dispenser according to the invention is therefore carried out in a sterile manner, with volume compensation sampled, thus making it possible to offer a useful volume of up to 99% and without affect the efficiency of the pump.

Claims (6)

  1. A dispenser for substances packaged in the form of a liquid, cream, or gel, and particularly intended for cosmetic, dermatological, pharmaceutical, ophthalmic, or perfumery applications, the dispenser being of the type comprising a tank (1) of substance (2) connected at one of its ends to a head provided with a pump (4) fitted with a fixing collar (3) and with controlled shutter means for the vent (40) formed on the body (41) of said pump (4), said shutter means comprising an air-permeable diffuser element (6) containing non-migratory agents for bacteriological and/or chemical treatment of air by contact; characterized in that said element (6) is engaged on the pump body (41) and firstly being held by leakproof peripheral radial clamping of at least one annular zone, and secondly by its top portion being engaged in the fixing collar, on the other hand.
  2. A dispenser according to claim 1, characterized in that the diffuser element (6) is a filter-forming porous core (61) of annular section which is engaged directly on the pump body (41) and which has pores of a size lying in the range 5 µm to 10 µm.
  3. A dispenser according to claim 1, characterized in that the diffuser element is an elastically deformable sleeve (62) defining a flexible pocket (60) of variable volume around the pump body and whose membrane-forming wall is made out of a material that has intrinsic permeability to air lying in the range 300 mm3/24h to 5000 mm3/24h.
  4. A dispenser according to claim 3, characterized in that said material also contains porous fillers.
  5. A dispenser according to claim 2, characterized in that the mean pore size of the diffuser element (6) is substantially equal to 7 µm, with an empty fraction lying in the range 40% to 60%.
  6. A dispenser according to any preceding claim, characterized in that the material constituting the diffuser element contains anti-oxidizing, bactericidal, antiseptic, and/or atmosphere-modifying treatment agents.
EP98922882A 1997-04-28 1998-04-28 Flask for dispensing liquid, cream or gel comprising a device for filtering incoming air Expired - Lifetime EP0975433B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9705227 1997-04-28
FR9705227A FR2762589B1 (en) 1997-04-28 1997-04-28 DISTRIBUTION BOTTLE FOR LIQUID, CREAM OR GEL COMPRISING A DEVICE FOR FILTERING THE AIR ENTERING
PCT/FR1998/000848 WO1998048943A1 (en) 1997-04-28 1998-04-28 Flask for dispensing liquid, cream or gel comprising a device for filtering incoming air

Publications (2)

Publication Number Publication Date
EP0975433A1 EP0975433A1 (en) 2000-02-02
EP0975433B1 true EP0975433B1 (en) 2003-06-25

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EP98922882A Expired - Lifetime EP0975433B1 (en) 1997-04-28 1998-04-28 Flask for dispensing liquid, cream or gel comprising a device for filtering incoming air

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US (1) US6244472B1 (en)
EP (1) EP0975433B1 (en)
JP (1) JP2002505639A (en)
CN (1) CN1106226C (en)
AT (1) ATE243566T1 (en)
AU (1) AU7536498A (en)
BR (1) BR9815489A (en)
CA (1) CA2287266A1 (en)
DE (1) DE69815834T2 (en)
DK (1) DK0975433T3 (en)
ES (1) ES2201494T3 (en)
FR (1) FR2762589B1 (en)
HK (1) HK1027060A1 (en)
PT (1) PT975433E (en)
WO (1) WO1998048943A1 (en)

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CN1106226C (en) 2003-04-23
HK1027060A1 (en) 2001-01-05
US6244472B1 (en) 2001-06-12
CA2287266A1 (en) 1998-11-05
WO1998048943A1 (en) 1998-11-05
DE69815834T2 (en) 2004-05-06
FR2762589A1 (en) 1998-10-30
ES2201494T3 (en) 2004-03-16
DE69815834D1 (en) 2003-07-31
EP0975433A1 (en) 2000-02-02
BR9815489A (en) 2002-05-28
PT975433E (en) 2003-10-31
FR2762589B1 (en) 1999-07-16
CN1254302A (en) 2000-05-24
ATE243566T1 (en) 2003-07-15
DK0975433T3 (en) 2003-09-29
AU7536498A (en) 1998-11-24
JP2002505639A (en) 2002-02-19

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