EP1216195B1 - Dichtung für dosierventil - Google Patents

Dichtung für dosierventil Download PDF

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Publication number
EP1216195B1
EP1216195B1 EP00962617A EP00962617A EP1216195B1 EP 1216195 B1 EP1216195 B1 EP 1216195B1 EP 00962617 A EP00962617 A EP 00962617A EP 00962617 A EP00962617 A EP 00962617A EP 1216195 B1 EP1216195 B1 EP 1216195B1
Authority
EP
European Patent Office
Prior art keywords
valve
metering
seal
gasket
valve stem
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
EP00962617A
Other languages
English (en)
French (fr)
Other versions
EP1216195A1 (de
Inventor
Patrice Leone
Sandrine Barranco
Patrick Di Giovanni
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
Original Assignee
Valois 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.)
Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1216195A1 publication Critical patent/EP1216195A1/de
Application granted granted Critical
Publication of EP1216195B1 publication Critical patent/EP1216195B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to an improved valve seal for metering valve and a fluid dispensing device comprising a metering valve provided with a such improved valve seal.
  • valves are well known in the state of the art. They find their main application with aerosol containers for fluid dispensing charged with a propellant (gas dissolved under pressure).
  • the valves When dosing, the valves generally comprise a valve body enclosing a delimited metering chamber axially by two annular seals, a valve seal and a chamber seal, and a movable valve stem between a rest position and an actuating position. This valve stem is urged by a spring towards its rest position, in which a shoulder of said rod is supported on the lower surface of said valve seal.
  • press the valve stem that slides in the body of valve inside the annular seals to its actuating position, in which a dose of the product is expelled.
  • valve stems of valves particularly metering valves
  • the valve stem must be able to slide between its actuating position and its resting position under the effect of the spring, while preventing leaks from occurring.
  • the known valves generally comprise a rod cylindrical valve having an extension of said shoulder, at least on the portion of the valve stem that slides in the valve seal, a constant outside diameter about equal (usually very slightly higher) to the outside diameter of the opening center of the valve seal.
  • a frustoconical portion adjacent said shoulder which extends axially on a portion of the thickness of said valve seal. So, the valve stem sliding with friction in the valve seal, the force exerted by the spring being greater than said friction, and, in its rest position, the frustoconical portion adjacent to said shoulder contributes to the seal at the valve seal.
  • a disadvantage of this implementation lies in the fact that the friction which appear when sliding the valve stem can be relatively important, which can cause a blockage of said valve stem. (phenomenon of sticking of the stem).
  • the friction may deform the edge of the valve seal in contact with the valve stem, so that product can be introduced between said rod and said seal. Especially in the case of powdery product, this can hinder or even prevent the operation of the metering valve.
  • Another solution is to coat the valve stems with a layer of silicone to improve its friction qualities.
  • This solution is relatively satisfactory with propellants such as CFCs, but is not sufficient when HFA gases are used. Indeed, these HFA gases expel as the silicone, so that after a number of use, the problem of blockage of the valve stem reappeared.
  • An object of the invention is to provide a valve seal for a metering valve made of such as to prevent inadvertent blockage of the valve stem by friction on the seal when said valve stem moves relative to said valve seal, while sealing at said valve seal during this movement.
  • Another object of the invention is to provide a valve seal made in such a way that the valve stem operates reliably and safely with a low stiffness spring, thus facilitating its actuation.
  • Yet another object of the invention is to provide a metering valve operating with a propellant gas that is not harmful to the environment, said valve comprising a rod of valve can slide in the valve seal without leakage and without risk of blockage between its actuating position and its rest position under the effect of the spring.
  • the subject of the invention is therefore a valve seal for a metering valve intended to distributing a pulverulent product dispersed in a propellant, said metering valve having a valve body defining a dosing chamber, a valve stem sliding in said metering chamber between a rest position and a position the sealing between said valve stem and said dosing chamber being made by said valve seal, said valve body being fixed in a capsule of fastener for joining the valve to a product reservoir, said valve seal having a radially inner contact zone on which said rod of valve, said contact zone being fixed to a rigid element so that during the displacement of said valve stem, said contact area of the valve seal remains substantially fixed in shape and in position, said contact zone having a profile at less partially rounded, to reduce the contact area between said seal valve and said valve stem, said rigid member being a part, in particular the edge internal radial, of said fixing capsule.
  • valve seal therefore avoids any deformation of the seal valve, thus preventing entrapment of the product between the rod and the seal.
  • said valve seal is fixed, in particular snapped, on the edge radial interior of said attachment capsule.
  • valve seal is directly molded on said radial edge inside said fixing cap.
  • the present invention also relates to a metering valve comprising such a seal of valve and a fluid dispenser device comprising such a valve dosing.
  • a metering valve may comprise a valve body 1 containing a metering chamber 2.
  • This metering chamber 2 may be delimited axially by two annular seals, a valve seal 3 and a chamber seal 4.
  • These two joints may each have a central opening through which passes a valve stem 10, movable inside the valve body 1 between a rest position, shown in FIG. 3, and an actuating position, represented in FIG. valve stem 10 can be biased towards its rest position by an elastic member such as that a spring 5, bearing on the one hand on the bottom of the valve body 1 and secondly on the lower end of the valve stem.
  • the valve body 1 can be fixed, for example crimped, in a capsule 100 which comes then attach, for example by crimping, to the neck of any container or vial (not shown)
  • a neck seal 101 is provided between said capsule 100 and said container neck.
  • the valve stem 10 generally comprises a distribution channel 12 opening through a radial hole 13 at its outer surface. In the rest position of the valve stem, said radial hole 13 opens out of the valve seal 3, while in said actuating position, it opens into the interior of the metering chamber 2.
  • the valve stem 10 may further comprise a radial shoulder 11 which is supported on the lower surface of the valve seal 3 in the rest position of the stem of valve 10, and which thus defines said rest position by acting as stop member against the thrust of the spring 5.
  • the valve stem 10 advantageously also comprises a conduit 14 which, in the rest position of the valve stem, connects a reservoir or container of product (not shown) with the metering chamber 2 to fill the latter, then that in the actuating position of the valve stem, it does not open into the dosing chamber 2.
  • this metering valve is conventional.
  • the user exercises a pressure on the valve stem 10 which has the effect of moving it against the force of the spring 5 out of its rest position.
  • the conduit 14 more opens in the metering chamber 2 and it is then hermetically closed by the valve stem 10 at the chamber seal 4 and the valve seal 3.
  • the valve stem 10 reaches its actuating position, the radial hole 13 of the stem of valve opens into the dosing chamber 2, thus allowing the dispensing of the dose of product contained in said metering chamber via the 12.
  • the user then releases his pressure on the valve stem 10 which is brought back by the spring 5 in its rest position where the conduit 14 opens into the dosing chamber 2, to fill it with a new dose of product.
  • the valve seal 3 has a radially internal contact zone 31 on which the valve stem 10 slides sealingly. According to the invention, this zone of contact 31 is attached to a rigid member 50 so as to substantially prevent any displacement and / or deformation of said contact zone 31 during the displacement of the rod valve 10.
  • said rigid element 50 is a rigid insert disposed at the inside of said valve seal 3.
  • the rigid insert 50 can for example be made of stainless steel, the seal being injected around said element.
  • said rigid element is part of or integral with the fixing cap 100.
  • the valve seal 3 is fixed around the inner radial edge 50 of said capsule.
  • the area contact 31 of the seal 3 is held axially by said radial edge of the capsule.
  • the seal 3 may be injection molded with a shape as shown in Figure 2, and then attached to the capsule 100, for example by snapping, or the seal 3 can be directly molded on the capsule 100.
  • the contact zone 31 of the valve seal 3 may further have at least partially rounded shape, to reduce the contact area between the seal and the valve stem, and thus reduce friction. Likewise, this form rounded also prevents product trapping at the ends of said contact area 31.
  • valve stem 10 sliding better on the seal, its dimensions
  • the outer parts may therefore be provided in such a way that it co-operates with the joint for ensure a perfect seal, even when using non-harmful gases such as HFA, while ensuring perfect sliding in the central opening of said seal, avoiding thus the problems of locking the rod.
  • the actuation of the metering valve according to the invention is therefore facilitated in that the force necessary to actuate it is decreased.
  • valve seal of the invention is that because of the decreased frictional forces exerted by the valve seal 3 on the rod of when the valve returns to its rest position, the speed of movement of the said valve stem is higher, which increases the reliability of the valve.
  • the invention thus guarantees a reliable operation of the metering valve and a total sealing at the valve seal, which allows in particular the use of propellants that are not harmful to the environment, such as HFA the significant increase in pressure inside the dosing chamber. Moreover, the use of a lower spring stiffness is made possible, which facilitates the actuation of the metering valve.

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)
  • Nozzles (AREA)
  • Sealing Devices (AREA)

Claims (5)

  1. Ventildichtung für ein Dosierventil, das dazu dient, ein fluidförmiges Produkt, insbesondere ein pulverförmiges in einem Treibgas dispergiertes Produkt abzugeben, wobei das Dosierventil einen Ventilkörper (1), der eine Dosierkammer (2) umschließt, und eine Ventilstange (10) umfaßt, die in der Dosierkammer (2) zwischen einer Ruhelage und einer Betätigungsstellung gleitet, wobei die Dichtigkeit zwischen der Ventilstange (10) und der Dosierkammer (2) durch besagte Ventildichtung (3) verwirklicht wird, wobei der Ventilkörper (1) in einer Befestigungskapsel (100) befestigt ist, die dazu dient, das Ventil mit einem Behälter für das Produkt zusammenzubauen, dadurch gekennzeichnet, dass die Ventildichtung (3) eine radial innere Berührungszone (31) umfaßt, auf der die Ventilstange (10) gleitet, wobei die Berührungszone (31) an einem starren Element (50) derart befestigt ist, dass während der Verschiebung der Ventilstange (10) die Berührungszone (31) der Ventildichtung (3) im wesentlichen hinsichtlich ihrer Form und Lage fest bleibt, wobei die Berührungszone (31) ein zumindest teilweise abgerundetes Profil aufweist, um die Berührungsoberfläche zwischen der Ventildichtung (3) und der Ventilstange (10) zu vermindern, und wobei das starre Element (50) ein Teil, insbesondere der radiale Innenrand, der Befestigungskapsel (100) ist.
  2. Ventildichtung nach Anspruch 1, bei der besagte Ventildichtung (3) auf dem radialen Innenrand (50) der Befestigungskapsel (100) befestigt, insbesondere eingerastet ist.
  3. Ventildichtung nach Anspruch 1, bei der die Ventildichtung (3) direkt an den radialen Innenrand (50) der Befestigungskapsel (100) angeformt ist.
  4. Dosierventil dadurch gekennzeichnet, dass es eine Ventildichtung gemäß einem der Ansprüche 1 bis 3 umfaßt.
  5. Abgabevorrichtung für ein fluidförmiges Produkt, insbesondere ein pharmazeutisches Produkt, dadurch gekennzeichnet, dass sie ein Dosierventil nach Anspruch 4 umfaßt.
EP00962617A 1999-09-15 2000-09-12 Dichtung für dosierventil Expired - Lifetime EP1216195B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9911502 1999-09-15
FR9911502A FR2798367B1 (fr) 1999-09-15 1999-09-15 Joint de soupape pour valve doseuse
PCT/FR2000/002518 WO2001019701A1 (fr) 1999-09-15 2000-09-12 Joint de soupape pour valve doseuse

Publications (2)

Publication Number Publication Date
EP1216195A1 EP1216195A1 (de) 2002-06-26
EP1216195B1 true EP1216195B1 (de) 2003-08-13

Family

ID=9549843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00962617A Expired - Lifetime EP1216195B1 (de) 1999-09-15 2000-09-12 Dichtung für dosierventil

Country Status (7)

Country Link
US (1) US6622893B2 (de)
EP (1) EP1216195B1 (de)
JP (1) JP4651892B2 (de)
CN (1) CN1144743C (de)
DE (1) DE60004542T2 (de)
FR (1) FR2798367B1 (de)
WO (1) WO2001019701A1 (de)

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JP2002332081A (ja) * 2001-05-10 2002-11-22 Bioactis:Kk ガス噴射弁及びガス注入に用いられる注入治具
JP2002333098A (ja) * 2001-05-10 2002-11-22 Bioactis:Kk ガス噴射弁及びガス注入に用いられる注入治具
WO2003057594A1 (en) * 2001-12-31 2003-07-17 3M Innovative Properties Company Gasket for use in a metering valve that limits seal intrusion
EP1461270A2 (de) 2001-12-31 2004-09-29 3M Innovative Properties Company Ventilschaft für die verwendung in einem dosierventil
BRPI0409812A (pt) * 2003-04-30 2006-05-09 Bespak Plc válvula de medição
GB0309936D0 (en) * 2003-04-30 2003-06-04 Bespak Plc Improvements in valves for pressurised dispensing containers
FR2860502B1 (fr) * 2003-10-07 2007-09-14 Valois Sas Valve doseuse et dispositif de distribution de produit fluide comportant une telle valve
MX2007002886A (es) * 2004-09-13 2007-05-16 Ono Pharmaceutical Co Derivado heterociclico que contiene nitrogeno y un farmaco que contiene el mismo como el ingrediente activo.
GB0503098D0 (en) * 2005-02-15 2005-03-23 Reckitt Benckiser Uk Ltd Spray device
GB0503095D0 (en) 2005-02-15 2005-03-23 Reckitt Benckiser Uk Ltd Holder
ATE431306T1 (de) 2005-02-15 2009-05-15 Reckitt Benckiser Uk Ltd Abdichtungsanordnung für einen unter druck stehenden behälter
GB0623052D0 (en) * 2006-11-18 2006-12-27 Reckitt Benckiser Uk Ltd An assembly
AU2007100166A4 (en) * 2007-03-02 2007-03-29 Magnum Manufacturing Pty Ltd Valve for aerosol containers
DE102007049614B4 (de) 2007-03-15 2015-03-05 Aptar Dortmund Gmbh Abgabevorrichtung
GB0719416D0 (en) * 2007-10-05 2007-11-14 3M Innovative Properties Co Metered dose valve
ES2436002T3 (es) * 2008-06-20 2013-12-26 Aptar Dortmund Gmbh Dispositivo de distribución
DE102008038654B4 (de) 2008-08-12 2019-09-19 Aptar Dortmund Gmbh Abgabekopf mit schwenkbarem Ventilelement
DE102009030627B4 (de) 2009-06-25 2020-03-12 Aptar Dortmund Gmbh Ventil und Abgabevorrichtung
JP6210586B2 (ja) * 2013-04-10 2017-10-11 株式会社三谷バルブ エアゾール容器に取り付けられるマウンティングキャップおよびこのマウンティングキャップを備えたエアゾール式製品
US10661974B2 (en) * 2016-08-12 2020-05-26 The Procter & Gamble Company Internally fitted aerosol dispenser
PL233269B1 (pl) * 2017-10-20 2019-09-30 Arka Spolka Z Ograniczona Odpowiedzialnoscia Spolka Komandytowa Uszczelka, zwłaszcza zaworu
JP6839139B2 (ja) * 2018-07-20 2021-03-03 株式会社ニフコ ノズル装置
CN109519579A (zh) * 2018-12-26 2019-03-26 万通(苏州)定量阀系统有限公司 阀门

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Also Published As

Publication number Publication date
WO2001019701A1 (fr) 2001-03-22
CN1144743C (zh) 2004-04-07
FR2798367A1 (fr) 2001-03-16
CN1374922A (zh) 2002-10-16
JP4651892B2 (ja) 2011-03-16
DE60004542D1 (de) 2003-09-18
FR2798367B1 (fr) 2001-11-23
US6622893B2 (en) 2003-09-23
JP2003509301A (ja) 2003-03-11
US20020190477A1 (en) 2002-12-19
DE60004542T2 (de) 2004-06-24
EP1216195A1 (de) 2002-06-26

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