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WO2009039565A1 - Logement de la soupape d'un ensemble de soupape d'aérosol - Google Patents

Logement de la soupape d'un ensemble de soupape d'aérosol Download PDF

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Publication number
WO2009039565A1
WO2009039565A1 PCT/AU2008/001414 AU2008001414W WO2009039565A1 WO 2009039565 A1 WO2009039565 A1 WO 2009039565A1 AU 2008001414 W AU2008001414 W AU 2008001414W WO 2009039565 A1 WO2009039565 A1 WO 2009039565A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
product
container
dispensed
aerosol
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.)
Ceased
Application number
PCT/AU2008/001414
Other languages
English (en)
Inventor
Max Reynolds
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.)
Individual
Original Assignee
Individual
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
Priority claimed from AU2007905214A external-priority patent/AU2007905214A0/en
Application filed by Individual filed Critical Individual
Publication of WO2009039565A1 publication Critical patent/WO2009039565A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/44—Valves specially adapted for the discharge of contents; Regulating devices
    • B65D83/48—Lift valves, e.g. operated by push action
    • 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 for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant
    • B65D83/58—Containers for dispensing liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant with separate inlets for contents and propellant feeding into a duct upstream of the dispensing valve

Definitions

  • the present invention relates to valve housing for a valve assembly for use with an aerosol dispenser using a compressed gas as a propellant.
  • the present invention relates to valve housing for use with an aerosol dispenser using Nitrogen as a prope ⁇ iant
  • the present invention also relates to a valve assembly including the valve housing.
  • Aerosol dispensers are well known and typically include a container holding a liquid, powder gel, foam, oil or other product to be dispensed.
  • the container also holds a propellant under pressure which provides force to expel the product from the container.
  • the principle propellants used in aerosol containers are gaseous hydrocarbons which when under the pressure in an aerosol container, are present mainly as a liquid.
  • the product is typically dissolved and/or dispersed in the liquid hydrocarbon.
  • the container has a head space which is filled by the gaseous hydrocarbon. As the product and liquefied hydrocarbon are dispensed from the container and the product level falls in the container, more of the liquid propellant turns to gas thereby keeping the pressure within the container relatively constant over the lifetime of the container.
  • Compressed gases may also be used as propellants. Compressed gases are not present as a liquid and are principally present in compressed gaseous form in the head space of the container.
  • the pressure of the gas "pushes" the product from the can.
  • spray characteristics which may be influenced include spray pattern, particle size and the like. In particular, spray particle size is dependent upon pressure and actuator design. As the pressure drops, the particle size increases. In some instances, the particle size increases such that the aerosol spray is ineffective for its intended use.
  • the gas supply is often exhausted before the entire product has been dispensed.
  • the above decrease in performance with a decrease in pressure is particularly problematic when nitrogen is the propellant.
  • the reason for this is that carbon dioxide and nitrous oxide may be at least partially soluble in a liquid product. In this case, as the liquid level decreases, nitrous oxide which can also be a health risk if inhaled or carbon dioxide comes out of solution and enters the head space, thereby at least partially alleviating the drop in pressure.
  • valve housing for an aerosol valve assembly for an aerosol container having a compressed gas propellant in a head space above a product to be dispensed
  • the valve housing includes; a valve chamber through which product being dispensed passes and a vapor tap in communication with the head space of the container for introducing gas from the head space into the valve chamber to mix with product being dispensed; wherein the vapor tap has a diameter of 100 ⁇ m or less.
  • the valve housing of the invention may be used with any suitable valve assembly for an aerosol container. These assemblies include any type of assembly whereby product is dispensed though a valve housing.
  • the product outlet of a valve chamber is sealed by a gasket.
  • the actuator When the actuator is depressed it allows product and gass to be forced out of the container by the pressure of the compressed gas.
  • the product outlet may be associated with a valve stem in the case of a male type valve or a valve seat in the case of a female type valve.
  • a vapor tap in a valve housing used in a valve assembly for use with liquefied gas propellents is known. Such vapor taps are used to facilitate mixing of the propellent and fluid being dispensed and can reduce particle size.
  • the diameter of these known vapor taps is in the range of 300 ⁇ m to 600 ⁇ m and they are obtained by laser drilling using a CO 2 laser.
  • the use of conventional vapor taps with valve assemblies for use with compressed gas propellants simply leads to a rapid loss of propellant and drop in pressure. In practice, the level of propellant required to maintain a workable pressure is lost when about one third of the fluid material remains in the container.
  • valve housing of the invention when used in a valve assembly for dispensing fluid from an aerosol container using a compressed gas as a propellant, it is possible to achieve a substantially uniform particle size throughout the lifetime of the container. The present inventor believes that such consistency has not been able to be achieved.
  • the vapor tap may suitably be located in any part of the valve housing, providing that the vapor tap allows for communication between the head space and the valve chamber such that gas may pass from the head space through the vapor tap and into the valve chamber to mix with product being dispensed.
  • the valve housing has a side wall and the vapor tap is located in the side wall.
  • the vapor tap is typically drilled using a laser capable of drilling a spot size
  • Preferred laser systems are a triple YAG laser operating at 355nm and a UV copper vapor laser operating at 255nm. Hole sizes varying between about 10 ⁇ m to about 100 ⁇ m can be drilled. A preferred technique for drilling holes is the technique of trepanning which is known to those of the laser drilling arts.
  • valve housing of the present invention may find particular application for use with nitrogen as a propellant.
  • valve assembly for an aerosol container having a compressed gas propellant in a head space above a product to be dispensed
  • the valve assembly including a valve housing having a valve chamber through which product being dispensed passes and a vapor tap in communication with the head space of the container for introducing gas from the head space into the valve chamber to mix with product being dispensed; wherein the vapor tap has a diameter of 10O ⁇ m or less.
  • an aerosol container having a compressed gas propellant above a product to be dispensed
  • the container including a valve assembly including a valve housing having a valve chamber through which product being dispensed passes; and a vapor tap in communication with the head space of the container for introducing gas from the head space into the valve chamber to mix with product being dispensed; wherein the vapor tap has a diameter of 100 ⁇ m or less.
  • valve housing and assembly of the present invention may be used in the construction of aerosol containers for the dispensation of any suitable product.
  • Preferred products are those whose use is under conditions where it is preferred that the propellant is neither flammable nor toxic.
  • Such applications include but are not limited to cooking oil, bomb release insecticides, fly sprays, industrial sprays, air fresheners, deodorants, oven sprays, oral sprays, medicinal and therapeutic sprays and the like.
  • the aerosol container of the invention typically has a dip tube diameter within the range of about 0.5mm to about 4mm.
  • the container has an actuator with an exit orifice typically having a diameter of between about 0.3mm to about 4mm.
  • Typical pressures within a full aerosol container are between about 800KPa to about 1200KPa. It will be appreciated by those of ordinary skill in the art that the above parameters may be varied depending upon the desired spray profile, density and viscosity of product and the like.
  • the spray particle size will vary with the application.
  • 'space sprays' such as fly sprays and the like have particle sizes of between about 30 to 50 micron.
  • Figure 1 shows a cross section of a preferred aerosol can of one form of the invention
  • Figure 2 shows a cross section of the top section of a valve assembly for an aerosol can.
  • Figure 1 shows a preferred aerosol can 2 of the present invention.
  • the can 2 has a valve assembly 10 that will be explained in further detail with respect to Figure 1 below.
  • the can 2 has a dip tube 3 attached to the lower portion of the valve assembly 10.
  • a dispensing nozzle 4 with an exit orifice 5 is attached to the upper portion of the valve assembly 10.
  • FIG 2 shows a cross section of the valve assembly 10 for the aerosol can shown in Figure 1.
  • the assembly 10 has a steel mounting cup 11 which is crimped at the periphery thereof to the can walls.
  • a rubber gasket 12 provides a seal between the mounting cup 11 and the can.
  • the valve assembly 10 includes a valve stem 14, a valve gasket 15, a valve housing 16 and a spring 17.
  • the valve stem 14 extends though a central opening within the mounting cup 11 and is moveable relative to the mounting cup 11 and the valve housing 16 between a closed position and a dispensing position.
  • the valve stem is biased towards the closed position by spring 17.
  • the valve housing 16 has a valve chamber 20 for receiving product to be dispensed. Product can enter the valve chamber 20 from the dip tube through passageway 21 in the tubular lower end 18 of valve housing 16.
  • the valve stem has a valve chamber 20 for receiving product to be dispensed. Product can enter the valve chamber 20 from the dip tube through passageway 21 in the tubular lower end 18 of valve housing 16.
  • the valve stem 14 has a dispensing passage 22 located in the upper portion thereof.
  • the dispensing passage 22 is in communication with the dispensing nozzle 4.
  • the valve stem 14 has a dispensing orifice located in the side thereof (not shown).
  • valve stem 14 When the valve stem 14 is in the closed position, the dispensing orifice is sealed by valve gasket 15. When the valve stem 14 is depressed into the dispensing position, the seal is broken and the dispensing orifice is in fluid communication with valve chamber 20 and product can flow into the dispensing passage 22.
  • the valve housing 16 also includes a vapor tap 23 located in the side wall 24 of the valve chamber 20.
  • the vapor tap 23 is a narrow bore hole having a diameter of between about 10 ⁇ m to about 100 ⁇ m. It will be appreciated that in use, the valve housing 16 is located in the head space of the aerosol can. The vapor tap 23 is therefore in communication with the gas in the head space. When product is being dispensed, compressed gas in the head space of the container can enter the valve chamber 20 through vapor tap 23 and mix with the product therein.
  • Example A valve assembly illustrated above was mounted to a convention aerosol can and charged with nitrogen compressed gas as a propellant to an initial pressure of 1000KPa.
  • the product in the can was cooking oil.
  • the diameter of the vapor tap was 10 ⁇ m.
  • the particle size of the aerosol spray was between about 50 ⁇ m to about 80 ⁇ m.
  • valve housing and assembly of the present invention allows compressed gases and in particular nitrogen to be used as propellants in aerosol containers without the observed decrease in spray performance over the life time of the container as seen with conventional valve assemblies.
  • compressed gas propellents to be used in a wider variety of applications.
  • Increased usage of compressed gas propellants also offers significant environmental advantages as it can reduce the levels of hydrocarbons released into the atmosphere.
  • a further advantage of a compressed gas sch as nitrogen is its lack of flammability and toxicity. Still further, nitrogen is a renewable resource.

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)

Abstract

L'invention porte sur le logement de la soupape (16) de l'ensemble soupape (10) d'un réservoir d'aérosol dont l'espace de tête au-dessus du produit à dispenser contient un gaz propulseur comprimé. Le logement de la soupape (16) comprend: une chambre de soupape (20) que traverse le produit à dispenser et un robinet de vaporisation (23) communiquant avec l'espace de tête du réservoir, pour faire passer ledit gaz de l'espace de tête à la chambre de soupape (20) et le mélanger au produit à dispenser, le robinet de vaporisation (23) présentant un diamètre de 100 µm ou moins.
PCT/AU2008/001414 2007-09-25 2008-09-24 Logement de la soupape d'un ensemble de soupape d'aérosol Ceased WO2009039565A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2007905214 2007-09-25
AU2007905214A AU2007905214A0 (en) 2007-09-25 A valve housing for a valve assembly for use with an aerosol dispenser using compressed gas as a propellant

Publications (1)

Publication Number Publication Date
WO2009039565A1 true WO2009039565A1 (fr) 2009-04-02

Family

ID=40510661

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2008/001414 Ceased WO2009039565A1 (fr) 2007-09-25 2008-09-24 Logement de la soupape d'un ensemble de soupape d'aérosol

Country Status (1)

Country Link
WO (1) WO2009039565A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2969845A4 (fr) * 2013-03-15 2016-11-16 Precision Valve Corp Soupape d'aérosol ayant des trajets d'écoulements definis
US9554982B2 (en) 2012-09-14 2017-01-31 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9579265B2 (en) 2014-03-13 2017-02-28 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9662285B2 (en) 2014-03-13 2017-05-30 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
CN106733342A (zh) * 2016-11-16 2017-05-31 河北工程大学 一种管道外壁防腐喷涂设备控制系统及方法
WO2022013362A1 (fr) * 2020-07-17 2022-01-20 Unilever Ip Holdings B.V. Produit de soins capillaires en aérosol
US20230255861A1 (en) * 2020-03-03 2023-08-17 Daizo Corporation Spray composition for hair styling and spray product for hair styling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940171A (en) * 1989-05-18 1990-07-10 Gilroy Gordon C Aerosol package having compressed gas propellant and vapor tap of minute size
US5143288A (en) * 1991-02-14 1992-09-01 S. C. Johnson & Son, Inc. Compressed gas aerosol spray system with a dip tube vapor tap hole
EP0611814A1 (fr) * 1993-01-29 1994-08-24 The Sherwin-Williams Company Compositions d'aérosol contenant des dispersions non aqueuses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4940171A (en) * 1989-05-18 1990-07-10 Gilroy Gordon C Aerosol package having compressed gas propellant and vapor tap of minute size
US5143288A (en) * 1991-02-14 1992-09-01 S. C. Johnson & Son, Inc. Compressed gas aerosol spray system with a dip tube vapor tap hole
EP0611814A1 (fr) * 1993-01-29 1994-08-24 The Sherwin-Williams Company Compositions d'aérosol contenant des dispersions non aqueuses

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10076489B2 (en) 2012-09-14 2018-09-18 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9554982B2 (en) 2012-09-14 2017-01-31 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9554981B2 (en) 2012-09-14 2017-01-31 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US10076490B2 (en) 2012-09-14 2018-09-18 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
EP2969845A4 (fr) * 2013-03-15 2016-11-16 Precision Valve Corp Soupape d'aérosol ayant des trajets d'écoulements definis
US9579265B2 (en) 2014-03-13 2017-02-28 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US10076474B2 (en) 2014-03-13 2018-09-18 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
US9662285B2 (en) 2014-03-13 2017-05-30 The Procter & Gamble Company Aerosol antiperspirant compositions, products and methods
CN106733342A (zh) * 2016-11-16 2017-05-31 河北工程大学 一种管道外壁防腐喷涂设备控制系统及方法
CN106733342B (zh) * 2016-11-16 2019-07-16 河北工程大学 一种管道外壁防腐喷涂设备控制系统及方法
US20230255861A1 (en) * 2020-03-03 2023-08-17 Daizo Corporation Spray composition for hair styling and spray product for hair styling
WO2022013362A1 (fr) * 2020-07-17 2022-01-20 Unilever Ip Holdings B.V. Produit de soins capillaires en aérosol
CN116234531A (zh) * 2020-07-17 2023-06-06 联合利华知识产权控股有限公司 气溶胶毛发护理产品

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