EP0125865B1 - Ventil für Aerosolbehälter - Google Patents

Ventil für Aerosolbehälter Download PDF

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Publication number
EP0125865B1
EP0125865B1 EP84303081A EP84303081A EP0125865B1 EP 0125865 B1 EP0125865 B1 EP 0125865B1 EP 84303081 A EP84303081 A EP 84303081A EP 84303081 A EP84303081 A EP 84303081A EP 0125865 B1 EP0125865 B1 EP 0125865B1
Authority
EP
European Patent Office
Prior art keywords
metering tank
shroud
aerosol container
valve
valve assembly
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
Application number
EP84303081A
Other languages
English (en)
French (fr)
Other versions
EP0125865A2 (de
EP0125865A3 (en
Inventor
Peter Gordon Watson
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.)
Riker Laboratories Inc
Original Assignee
Riker Laboratories Inc
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 Riker Laboratories Inc filed Critical Riker Laboratories Inc
Publication of EP0125865A2 publication Critical patent/EP0125865A2/de
Publication of EP0125865A3 publication Critical patent/EP0125865A3/en
Application granted granted Critical
Publication of EP0125865B1 publication Critical patent/EP0125865B1/de
Expired 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
    • 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
    • B65D83/42—Filling or charging means
    • B65D83/425—Delivery valves permitting filling or charging

Definitions

  • This invention relates to valve assemblies for pressurised aerosol-dispensing containers and in particular to a valve assembly which allows pressure filling of an aerosol container and dispensing of metered volumes therefrom.
  • Aerosol containers are in widespread use for dispensing cosmetic, medical and other preparations. In some cases, particularly when dispensing medical preparations, it is important that the amount of the preparation which is dispensed is a predetermined accurate volume each time the aerosol container is activated. Additionally, many of the active ingredients in the preparations are expe- sive and accordingly it is important that there should be no wastage of the contents of the container.
  • valve assemblies for aerosol containers which are designed to dispense a metered quantity of the contents of an aerosol container. Examples of such valve assemblies are disclosed in British Patent Specification Nos. GB-A-864 694, GB-A-1 336 379 and GB-A-2 077 229. Two of the most common problems associated with known metering valve assemblies are that the dosage reproducibility is often bad and variations of up to 40% may be obtained, particularly when the aerosol container is nearly empty, and it is often not possible to dispense the entire contents of the aersol container causing significant wastage.
  • valve assembly comprising a casing member adapted to form at least the top portion of an aerosol container, the first hollow body secured to the inside of the casing member, and an elongate valve member sealingly extending through respective apertures in the casing member and hollow body for longitudinal inward movement during a dispensing operation, outlet and inlet passages formed in the valve member at the outer and inner ends therof respectively and operative to connect the chamber formed by the space inside the hollow body around the valve member with the outside and inside respectively of the container, and a second hollow body encircling and retaining on the first hollow body in such manner as to define a plurality of capillary channels between the two bodies which retain liquid therein.
  • a valve assembly has no provision for filling the aerosol container.
  • the first method comprises cooling the formulation of aerosol propellent and active ingredients to maintain them in the liquid state, introducing the cooled liquid formulation into an aerosol container and thereafter closing the container by securing the valve assembly.
  • pressure filling the valve assembly is secured to the aerosol container before filling and the formulation, which is maintained in liquid form under pressure, is introduced under pressure into the aerosol container through a special filling valve which is included in the valve assembly.
  • a concentrate of the active ingredient is introduced in the open container, the valve assembly is attached and the aerosol unit is pressure filled with the remainder of the propellant.
  • valves which are adapted for both pressure filling and dispensing metered volumes of contents as disclosed, for example, in GB-A-1 336 379, US-A-3 738 542 and US-A-2 746 796.
  • these known valves generally suffer from one or more of the disadvantages of poor dosage reproducibility, inefficient emptying of the container, a tendency for the filling valve to fail by displacement thereof during filling and possession of a complex construction.
  • valve assembly which allows dispensing of metered volumes of material from an aerosol container comprising:
  • valve assembly of the present invention allows pressure filling of aerosol containers with the complete formulation in a single step at speeds in excess of 15 g/sec.
  • the valve gives excellent dosage reproducibility even when the container is almost empty and dispenses substantially all of the formulation within the container.
  • the valve assembly 1 comprises a casing 2 which forms the closure cap of an aerosol container (not shown).
  • the assembly 1 may be crimped over the neck of an aerosol container with the provision of a sealing gasket (not shown) to ensure a tight seal.
  • a hollow body defines the metering tank 4 and is secured at one end 6 to the casing 2.
  • the metering tank 4 is provided with an aperture 8 covered by a rubber sleeve 10 which extends around the metering tank 4.
  • the aperture 8 and rubber sleeve 10 constitute the pressure filling means of the valve 9.
  • An elongate valve member 12 extends centrally through the casing 2 and at its inner end 14 projects through an aperture 16 in the metering tank 4. Sealing gaskets 18 and 20 are provided at each end of the metering tank 4. A helical coil spring 22 is seated at one end upon the gasket 20 and at the other end on an annular protuberance 24 of the valve member 12 to urge the valve member 12 towards the exterior of the aerosol container (not shown).
  • the valve member 12 includes at its outer end a discharge orifice 26 and a further orifice 28 which is exterior of the casing 2 when the valve member 12 is in the closed position (Figure 1) and within the metering tank 4 when the valve member 12 is in its firing position ( Figure 2).
  • the valve member 12 includes at its inner end on the outer surface thereof a groove 30 which is arranged to provide access to the metering tank 4 via aperture 16 only when the valve member 12 is in the closed position ( Figure 1).
  • This arrangement is known, see for example, British Patent Specification No. 2 077 229A.
  • the metering tank 4 is enveloped by a shroud 32 made of plastics material.
  • The'open end 34 of the shroud 32 extends substantially to the flared end 6 of the metering tank 4, enveloping the rubber sleeve 10 of the pressure filling valve 9.
  • the interior of the shroud 32 at the open end 34 is dimensioned to allow only limited movement of the rubber sleeve 10 in the radial direction, sufficient to allow passage of liquid material from the metering tank 4 to the interior of the aerosol container during the filling operation, but insufficient to allow permanent displacement of the rubber sleeve 10. Movement of the rubber sleeve 10 in the longitudinal direction is prevented in one direction by the flared end 6 of the metering tank 4 and in the other direction by abutments 38 on the interior surface of the shroud 32.
  • the interior of the intermediate portion 40 of the shroud 32 comprises a series of substantially longitudinal ribs 41 defining passages 43 therebetween.
  • the ribs 41 are dimensioned such that the shroud 32 may be force fitted over the metering tank 4 with the ribs 41 providing pressure contact with the outside of the metering tank 4 thereby holding the shroud 32 firmly in place.
  • the interior surface is provided with a projecting surface 42 which is designed to abut the end of the metering tank 4.
  • This arrangement blocks the passages 43 between the ribs 41 with the exception of one or more passages which are extended at their inner end 44 to define with the metering tank 4 an aperture 45 so that there are one or more open passages between the interior inner portion 45 of the shroud 32, the intermediate portion 40 and the open end 34 leading to the aerosol container.
  • the inner end 42 of the shroud 32 is dimensioned to accommodate the valve member 12 in both the closed and firing positions.
  • the exterior surface 47 of the shroud 32 is free from major discontinuities, e.g. ledges, to reduce the propensity of the formulations within the aerosol container to deposit powder or crystals thereon.
  • the valve assembly 1 of the invention readily allows the entire contents of the aerosol container to be pressure filled.
  • the valve member 12 is depressed to the firing position and the formulation introduced under pressure through the aperture 26.
  • the liquid emerges from the elongate valve member 12 into the metering tank 4 via the orifice 28.
  • the route of the formulation under pressure filling is shown by the arrowed line in Figure 2.
  • the aerosol is fired with the valve assembly 1 inverted, i.e. valve member 12 pointing downwardly.
  • the liquid formulation therein passes up the open passage 44 between the shroud 32 and metering tank 4 to the inner end 46.
  • the valve member 12 is in the closed position ( Figure 1), the liquid contents pass from the inner end 46 of the shroud 32 into the metering tank 4 via the groove 30 in the valve member 12 to fill the metering tank 4.
  • the valve assembly 1 gives very good dose reproducibility even when the container is almost empty. This is achieved by the shroud 32 extending substantially to the flared end 6 of the metering tank 4 and thus it will dip into the liquid contents of the aerosol container (when the container is inverted) until the contents are substantially exhausted.
  • the provision of only one open channel which is preferred, reduces the "dead volume" of the valve assembly since the blocked passages contain only small volumes of liquid and ensures that the filling of the metering tank 4 is substantially unaffected when the aerosol container is almost empty and tilted.
  • the arrangement also ensures that the rubber sleeve 10 of the pressure filling valve 9 will not be permanently displaced even under high pressure filling operations. This allows the size of the sleeve to be reduced in comparison to many prior art devices thus reducing the risk of contamination of the contents upon contact with rubber.

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)

Claims (8)

1. Ventilanordnung (1) zum Abgeben von dosierten Materialvolumina aus einem Aerosolbehälter mit:
einem Gehäuse (2) zum Ausbilden mindestens des Oberteils eines Aerosolbehälters,
einem innerhalb des Gehäuses (2) befestigten ersten Hohlkörper, der einen Dosiertank (4) begrenzt,
einem länglichen Ventilteil (12), das sich abdichtend durch jeweilige Öffnungen in dem Gehäuseteil (2) und dem Dosiertank (4) erstreckt und in Längsrichtung zwischen einer SεhIießposition und einer Abgabeposition beweglich ist, so daß in der Abgabeposition ein offener Kanal durch das längliche Ventilteil (12) den Dosiertank (4) mit der Außenumgebung verbindet und der Dosiertank (4) abgeschlossen ist, um den Durchlaß von Material von dem Aerosolbehälter zu dem Dosiertank (4) zu verhindern, und daß in der Schließposition das längliche Ventilteil (12) den Durch laß von Material von dem Aerosolbehälter zu dem Dosiertank (4) erlaubt und den Durchlaß von Material von dem Dosiertank (4) zu der Außenumgebung verhindert,
und einem auf dem Dosiertank (4) gehaltenen und eine Haube um diesen bildenden zweiten Hohlkörper (32), der sich im wesentlichen bis zum Gehäuse erstreckt, wobei die Haube und der Dosiertank (4) mindestens einen Durchlaß (45) begrenzen, durch den Material von dem Aerosolbehälter in den Dosiertank überführt werden kann, wenn das längliche Ventilteil (12) in der geschlossenen Position ist, dadurch'gekennzeichnet, daß der Dosiertank ein Druckfüllventil (9) mit einer Öffnung (8) in dem Dosiertank (4) aufweist, die mit dem Aerosolbehälter in Verbindung steht, wobei die Öffnung (8) dem Gehäuse benachbart ist und von einem Dichtungsteil (10) bedeckt ist, das den Durchlaß von Material von dem Aerosolbehälter zu dem Dosiertank (4) verhindert, aber den Durchlaß von Material von dem Dosiertank (4) zu dem Aerosolbehälter erlaubt, wenn genügend Druckdifferenz zwischen dem Dosiertank und dem Aerosolbehälter besteht, wobei die Haube derart geformt ist, daß sie das Dichtungsteil (10) des Druckfüllventils (9) bedeckt, um dessen begrenzte Bewegung zum Ermöglichen einer Druckfüllung zu erlauben, aber um eine dauernde Verschiebung des Dichtungsteils (10) von der Öffnung (8) in dem Dosiertank (4) zu verhindern.
2. Ventilanordung nach Anspruch 1, wobei das Dichtungsteil (10) des Druckfüllventils (9) eine Gummihülse aufweist, die sich um den Umfang des Dosiertanks (4) erstreckt.
3. Ventilanordung nach Anspruch 2, wobei eine Längsbewegung der Gummihülse von der Haube (32) verhindert wird.
4. Ventilanordung nach einem der Ansprüche 1 bis 3, wobei ein einziger Durchlaß (43, 44) zwischen der Haube (32) und dem Dosierventil (4) ausgebildet ist, durch den Material von dem Aerosolbehälter in den Dosiertank (4) überführt werden kann.
5. Ventilanordung nach einem der Ansprüche 1 bis 4, wobei die inneren Teile der Haube (32) in Druckkontakt mitderAußenfläche des Dosiertanks (4) stehen, wodurch die Haube (32) fest an ihrem Platz gehalten wird.
6. Ventilanordung nach Anspruch 5, wobei das Innere der Haube (32) mehrere Rippen (41) aufweist, die in Druckkontakt mit dem Dosiertank (4) stehen und zwischen denen Durchlässe (43) ausgebildet sind.
7. Ventilanordnung nach Anspruch 6, wobei die Innenfläche der Haube (32) einen Vorsprung (42) aufweist, der gegen das Ende des Dosiertanks (4) stößt, wodurch die Kanäle (43) zwischen den Rippen (41) mit Ausnahme eines oder mehrerer offener Kanäle abgesperrt werden.
8. Aerosolbehälter mit einer Ventilanordnung nach einem der Ansprüche 1 bis 7.
EP84303081A 1983-05-06 1984-05-08 Ventil für Aerosolbehälter Expired EP0125865B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8312479 1983-05-06
GB838312479A GB8312479D0 (en) 1983-05-06 1983-05-06 Valve assembly

Publications (3)

Publication Number Publication Date
EP0125865A2 EP0125865A2 (de) 1984-11-21
EP0125865A3 EP0125865A3 (en) 1985-11-06
EP0125865B1 true EP0125865B1 (de) 1988-06-29

Family

ID=10542274

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303081A Expired EP0125865B1 (de) 1983-05-06 1984-05-08 Ventil für Aerosolbehälter

Country Status (8)

Country Link
EP (1) EP0125865B1 (de)
JP (1) JPS6034363A (de)
AU (1) AU560773B2 (de)
CA (1) CA1252439A (de)
DE (1) DE3472388D1 (de)
GB (1) GB8312479D0 (de)
NZ (1) NZ207997A (de)
ZA (1) ZA843380B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2602298B1 (fr) * 1986-07-30 1988-09-16 Sofab Valve doseuse
DE3802498A1 (de) * 1988-01-28 1989-08-03 Boehringer Ingelheim Kg Vorrichtung zur erhoehung der dosierungssicherheit von aerosolpraeparaten auf suspensionsbasis
US4867352A (en) * 1988-04-05 1989-09-19 Philip Meshberg Dispensing valve assembly for use with a pressurized container
US5105995A (en) * 1990-04-30 1992-04-21 Martin James H Gas assist unit dose dispenser
GB9312196D0 (en) * 1993-06-14 1993-07-28 Minnesota Mining & Mfg Metered-dose aerosol valves
GB9626960D0 (en) 1996-12-27 1997-02-12 Glaxo Group Ltd Valve for aerosol container
GB2357493B (en) * 1999-12-22 2002-01-09 Bespak Plc Improvements in valves for pressurised dispensing containers
US8678248B2 (en) * 2007-12-11 2014-03-25 Summit Packaging Systems Inc Metering valve
JP6172756B2 (ja) * 2014-04-30 2017-08-02 株式会社三谷バルブ 内外二重容器エアゾール噴射機構およびこの内外二重容器エアゾール噴射機構を備えたエアゾール式製品
WO2015083642A1 (ja) * 2013-12-03 2015-06-11 株式会社三谷バルブ エアゾールハウジング機構およびこのエアゾールハウジング機構を備えたエアゾール式製品
JP7120779B2 (ja) * 2018-03-20 2022-08-17 株式会社ダイゾー スプレー式製品およびスプレー式製品の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3818747Y1 (de) * 1960-05-20 1963-09-05
GB979002A (en) * 1962-02-26 1965-01-01 Bertspa Engineering Company Lt Valves for pressurised containers
GB2077229B (en) * 1980-05-16 1983-08-03 Neotechnic Eng Ltd Valve assembly for a pressurized aerosoldispensing container

Also Published As

Publication number Publication date
EP0125865A2 (de) 1984-11-21
GB8312479D0 (en) 1983-06-08
CA1252439A (en) 1989-04-11
AU2768184A (en) 1984-11-08
JPS6034363A (ja) 1985-02-21
AU560773B2 (en) 1987-04-16
ZA843380B (en) 1986-03-26
DE3472388D1 (en) 1988-08-04
NZ207997A (en) 1986-05-09
EP0125865A3 (en) 1985-11-06

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