EP3849921B1 - Ventildichtung und dosierventil für einen spender von fluidprodukten - Google Patents

Ventildichtung und dosierventil für einen spender von fluidprodukten Download PDF

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Publication number
EP3849921B1
EP3849921B1 EP19787017.3A EP19787017A EP3849921B1 EP 3849921 B1 EP3849921 B1 EP 3849921B1 EP 19787017 A EP19787017 A EP 19787017A EP 3849921 B1 EP3849921 B1 EP 3849921B1
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EP
European Patent Office
Prior art keywords
valve
gasket
metering
microcapsules
elastomer material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19787017.3A
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English (en)
French (fr)
Other versions
EP3849921A1 (de
Inventor
Michael BAZIRE
Patrice LÉONÉ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar France SAS
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Aptar France SAS
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Publication date
Application filed by Aptar France SAS filed Critical Aptar France SAS
Publication of EP3849921A1 publication Critical patent/EP3849921A1/de
Application granted granted Critical
Publication of EP3849921B1 publication Critical patent/EP3849921B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/44—Valves specially adapted therefor; Regulating devices
    • B65D83/52—Valves specially adapted therefor; Regulating devices for metering
    • B65D83/54—Metering valves ; Metering valve assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/105—Sealing arrangements around pump actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
    • B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants

Definitions

  • the present invention relates to a valve seal, a metering valve and a fluid dispenser.
  • valve The preferred field of application for such a valve is pharmaceuticals, but this type of valve can also be used in other fields, for example cosmetics or perfumery.
  • Prior art metering valves include a valve body defining a metering chamber in which a valve slides between rest and actuation positions.
  • the valve body and the valve are usually made by molding plastic materials of the polymer type, such as for example polyacetal (POM) or polybutylene terephthalate (PBT).
  • Seals including an outer seal called a neck seal and two inner seals called a valve seal and a chamber seal, are generally provided in a metering valve.
  • the seals are generally made of elastomeric material, such as for example nitrile, ethylene-propylene-diene monomer (EPDM) or elastomeric cyclic olefin copolymer (elastomeric COC).
  • Additives before they can fulfill their role as agents lubricants in the elastomer matrix, can be degraded during the manufacture of the material. There may also be interactions with other ingredients present in the elastomeric matrix. This is particularly the case in the presence of mineral fillers, which can absorb these lubricants, thus preventing their migration to the surface of the material.
  • the present invention aims to overcome the aforementioned problems.
  • the object of the present invention is thus to provide a valve seal with improved friction properties.
  • the present invention also aims to provide a valve seal, a metering valve and a fluid dispenser device that are simple and inexpensive to manufacture and assemble.
  • the present invention therefore relates to a valve gasket for a metering valve of a fluid dispenser, said gasket being made of a self-lubricating elastomeric material, said elastomeric material containing a lubricant, such as silicone oil, said lubricant being encapsulated in the form of microcapsules and/or microspheres, which are added to the elastomeric material of the gasket.
  • a lubricant such as silicone oil
  • the elastomeric material comprises EPDM.
  • the lubricant comprises silicone oil.
  • microcapsules and/or microspheres containing silicone oil are added to the elastomeric material during manufacture of the gasket.
  • the quantity of said microcapsules and/or microspheres introduced into the elastomeric material is less than 5% by weight, advantageously around 3% by weight of the elastomeric material.
  • the present invention also relates to a metering valve of a fluid dispenser, comprising a valve body defining a metering chamber in which a valve slides between rest and actuation positions, said valve comprising a neck seal and at at least one internal seal, said valve sliding against said at least internal seal, said metering valve comprising at least one seal as described above.
  • said at least one internal seal is made as described above.
  • the present invention also relates to a fluid dispenser, comprising a reservoir containing the fluid to be dispensed, said dispenser comprising a metering valve as described above.
  • the dispenser comprises an HFA gas as propellant gas.
  • the metering valve represented on the figure 1 is of the retention type. It is however understood that this is only an example, and that the present invention applies to all types of metering valves. More generally, the present invention could also be applied to pump seals not using propellant gas for the distribution of the fluid product.
  • the valve of the figure 1 comprises a valve body 10 extending along a longitudinal axis. Inside said valve body 10, a valve 30 slides between a rest position, which is that shown in the figure 1 , and a dispensing position, in which the valve 30 is pushed inside the valve body 10.
  • This valve is intended to be assembled on a tank 1, preferably by means of a fixing element 5, which can be a cap to be crimped, screwed or snapped on, and advantageously with the interposition of a neck gasket 6.
  • a ring 4 can be assembled around the valve body, in particular to reduce the dead volume in the inverted position and to limit the contact of the fluid product with the neck seal.
  • This ring can be of any shape, and the example of the figure 1 is not limiting.
  • the valve 30 is biased towards its rest position by a spring 8, which is arranged in the valve body 10 and which cooperates on the one hand with this valve body 10, and on the other hand with the valve 30, preferably with a radial flange 320 of the valve 30.
  • a metering chamber 20 is defined inside the valve body 10, said valve 30 sliding inside said metering chamber to allow the contents of the latter to be dispensed when the valve is actuated.
  • the metering chamber is preferably defined between two annular seals, a valve seal 21 and a chamber seal 22, in a well-known manner.
  • the figure 1 represents the valve in the upright storage position, that is to say the position in which the metering chamber 20 is arranged above the reservoir 1.
  • the valve 30 has an outlet orifice 301 connected to an inlet 302, which is disposed in the metering chamber 20 when the valve 30 is in the dispensing position.
  • the valve 30 can be made in two parts, namely a top part 31 (also called top of valve) and a lower part 32 (also called lower valve).
  • the lower part 32 is in this embodiment assembled inside the upper part 31.
  • An internal channel 33 is provided in the valve 30 which makes it possible to connect the metering chamber 20 to the tank 1, to fill said metering chamber 20 when, after each actuation of the valve, the valve 30 returns to its rest position under the effect of the spring 8. This filling is done when the device is still in the inverted position of use, with the valve arranged below of the tank.
  • the metering valve contains a propellant gas, in particular of the well-known HFA type.
  • At least one seal of the valve is made of a self-lubricating elastomeric material, a lubricant, such as silicone oil, being encapsulated in the form of microcapsules and / or microspheres, which are added to the elastomeric material of the gasket.
  • a lubricant such as silicone oil
  • the release of the active principle can be done in several ways. It can be sudden, under the effect of a constraint such as heat or pressure in the case of microcapsules.
  • the microspheres make it possible to have a gradual release of the encapsulated product. Eventually, we can consider combining the two effects, simultaneously adding microcapsules and microspheres.
  • the size of the microcapsules and/or microspheres can vary between 5 and 100 ⁇ m.
  • microcapsules or microspheres of silicone oil were introduced at a level of 3% by weight into the EPDM material forming a valve seal.
  • the mode of addition is done as for the other ingredients (mineral fillers, antioxidant, vulcanizing agent, etc.) usually added in an EPDM material.
  • an amount which is less than 5% by weight is provided.
  • the figure 2 illustrates the Modulus at 100% strain, and the picture 3 the Shore A hardness. It can be seen that the addition of microcapsules and microspheres has no negative impact on these mechanical properties of the elastomer, here EPDM.
  • the figure 4 illustrates the coefficient of friction for these same materials, on the one hand on POM and on the other hand on PBT.
  • the test consists of rubbing the EPDM on plastic materials (POM & PBT) in order to determine a coefficient of friction.
  • the coefficient of friction is the ratio of the traction force (response force allowing the device to move) to the force applied (normal force).
  • the encapsulation of the lubricant makes it possible to confine it to prevent it from being absorbed or degraded during the manufacturing process of the material. In addition, it makes it available on the surface of the material when the microcapsules break under mechanical stress, by friction or pressure.
  • the invention therefore makes it possible to reduce the problems of friction in the valves, and therefore to eliminate or at least limit the risks of sticking.
  • the addition of talc to the elastomer strips to avoid stickiness during storage is no longer necessary, which makes it possible to reduce the manufacturing costs of the seals, and therefore of the valve.
  • the assembly of the valves is also simplified by the reduction or elimination of the use of silicone when buffering the joints.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Gasket Seals (AREA)
  • Nozzles (AREA)
  • Closures For Containers (AREA)

Claims (9)

  1. Ventildichtung (21, 22) für Dosierventil eines Fluidproduktspenders, die aus einem selbstschmierenden Elastomermaterial hergestellt ist, wobei das Elastomermaterial ein Schmiermittel wie etwa Silikonöl enthält, dadurch gekennzeichnet, dass das Schmiermittel in Form von Mikrokapseln und/oder Mikrosphären gekapselt ist, die dem Elastomermaterial der Dichtung hinzugefügt sind.
  2. Dichtung nach Anspruch 1, wobei das Elastomermaterial EPDM umfasst.
  3. Dichtung nach einem der vorhergehenden Ansprüche, wobei das Schmiermittel Silikonöl umfasst.
  4. Dichtung nach einem der vorhergehenden Ansprüche, wobei Mikrokapseln und/oder Mikrosphären, die Silikonöl enthalten, dem Elastomermaterial bei der Herstellung der Dichtung hinzugefügt werden.
  5. Dichtung nach Anspruch 4, wobei die Menge der Mikrokapseln und/oder Mikrosphären, die in das Elastomermaterial eingegeben sind, weniger als 5 Gewichts-%, vorteilhafterweise ungefähr 3 Gewichts-% des Elastomermaterials beträgt.
  6. Dosierventil eines Fluidproduktspenders, umfassend einen Ventilkörper (10), der eine Dosierkammer (20) definiert, in der ein Ventil (30) zwischen Ruhe- und Betätigungspositionen gleitet, wobei das Ventil eine Halsdichtung (6) und wenigstens eine Innendichtung (21, 22) aufweist, wobei das Ventil gegen die wenigstens Innendichtung (21, 22) gleitet, dadurch gekennzeichnet, dass das Dosierventil wenigstens eine Dichtung nach einem der vorhergehenden Ansprüche aufweist.
  7. Ventil nach Anspruch 6, wobei die wenigstens eine Innendichtung (21, 22) nach einem der Ansprüche 1 bis 6 ausgebildet ist.
  8. Fluidproduktspender umfassend einen Vorratsbehälter (1), der zu spendendes Fluidprodukt enthält, dadurch gekennzeichnet, dass der Spender ein Dosierventil nach Anspruch 6 oder 7 aufweist.
  9. Spender nach Anspruch 8, umfassend ein HFA-Gas als Treibgas.
EP19787017.3A 2018-09-11 2019-09-09 Ventildichtung und dosierventil für einen spender von fluidprodukten Active EP3849921B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1858131A FR3085734B1 (fr) 2018-09-11 2018-09-11 Joint de valve et valve doseuse pour distributeur de produit fluide.
PCT/FR2019/052062 WO2020053508A1 (fr) 2018-09-11 2019-09-09 Joint de valve et valve doseuse pour distributeur de produit fluide

Publications (2)

Publication Number Publication Date
EP3849921A1 EP3849921A1 (de) 2021-07-21
EP3849921B1 true EP3849921B1 (de) 2022-11-02

Family

ID=64049410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19787017.3A Active EP3849921B1 (de) 2018-09-11 2019-09-09 Ventildichtung und dosierventil für einen spender von fluidprodukten

Country Status (7)

Country Link
US (1) US20220048696A1 (de)
EP (1) EP3849921B1 (de)
JP (1) JP7427674B2 (de)
CN (1) CN112739627B (de)
BR (1) BR112021004267A2 (de)
FR (1) FR3085734B1 (de)
WO (1) WO2020053508A1 (de)

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5670126A (en) * 1979-11-06 1981-06-11 Seiko Epson Corp Self-luburicating part
GB2329939A (en) * 1997-06-26 1999-04-07 Glaxo Group Ltd Self-lubricating valve stem for aerosol containers
GB9906640D0 (en) * 1999-03-24 1999-05-19 Glaxo Group Ltd Valve
GB9918627D0 (en) * 1999-08-07 1999-10-13 Glaxo Group Ltd Valve
HUP0302005A3 (en) * 2000-05-23 2006-07-28 Glaxo Group Ltd Aerosol container for formulations of salmeterol xinafoate
JP2002097448A (ja) 2000-09-21 2002-04-02 Keeper Co Ltd シール部材
JP2005155907A (ja) 2003-11-07 2005-06-16 Nsk Ltd 転がり軸受
CN1821330A (zh) * 2005-02-18 2006-08-23 弗罗伊登贝格-诺克普通合伙公司 硅氧烷衬垫组合物
US20070134411A1 (en) * 2005-12-14 2007-06-14 General Electric Company Method for making compositions containing microcapsules and compositions made thereof
CN101348600B (zh) * 2008-09-02 2010-11-10 中山大学 一种自润滑型环氧树脂材料及其制备方法
US20120024632A1 (en) * 2010-07-27 2012-02-02 Baker Hughes Incorporated Downhole seal and method of lubricating a downhole tool
CN104893256A (zh) * 2015-04-10 2015-09-09 重庆交通大学 高性能复合刹车片材料
CN108410350B (zh) * 2018-01-29 2020-07-14 清华大学 一种内含电磁触发微胶囊的智能自润滑复合材料的制备方法

Also Published As

Publication number Publication date
FR3085734A1 (fr) 2020-03-13
JP2022500326A (ja) 2022-01-04
US20220048696A1 (en) 2022-02-17
CN112739627B (zh) 2023-03-28
WO2020053508A1 (fr) 2020-03-19
CN112739627A (zh) 2021-04-30
BR112021004267A2 (pt) 2021-05-25
EP3849921A1 (de) 2021-07-21
FR3085734B1 (fr) 2021-01-01
JP7427674B2 (ja) 2024-02-05

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