EP2374731A1 - Hochleistungsventil - Google Patents

Hochleistungsventil Download PDF

Info

Publication number
EP2374731A1
EP2374731A1 EP10159274A EP10159274A EP2374731A1 EP 2374731 A1 EP2374731 A1 EP 2374731A1 EP 10159274 A EP10159274 A EP 10159274A EP 10159274 A EP10159274 A EP 10159274A EP 2374731 A1 EP2374731 A1 EP 2374731A1
Authority
EP
European Patent Office
Prior art keywords
valve
grommet
shore
less
container
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.)
Withdrawn
Application number
EP10159274A
Other languages
English (en)
French (fr)
Inventor
Koen Claerbout
Jordi Demey
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.)
Altachem NV
Original Assignee
Altachem NV
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 Altachem NV filed Critical Altachem NV
Priority to EP10159274A priority Critical patent/EP2374731A1/de
Priority to PCT/EP2011/055020 priority patent/WO2011124520A1/en
Publication of EP2374731A1 publication Critical patent/EP2374731A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • B65D83/46—Tilt valves

Definitions

  • the present invention concerns a valve for dispensing fluid from a pressurized container, more particularly for moisture sensitive fluids such as one or two component polyurethane foam compositions.
  • the containers are usually made of metal, topped with a metal cup wherein a valve is provided.
  • the valve is the most sensitive element of the container in terms of moisture ingress and is by far the most important part regarding ease of handling of the container and ease of dispensing of the fluid without wasting the valuable fluid contained in the container.
  • the grommet essentially comprises a tubular member having an outwardly extending skirt at one end thereof, the surface of the skirt facing away from the tubular member defining the valve seat.
  • the tubular member hereby fulfills a spring function, whereas the skirt has a primary sealing function.
  • a remaining challenge for the existing valves is that moisture can penetrate through the valve to the valve seat such that for example polyurethane compositions start curing against the valve seat, preventing good closing of the valve and rendering the content of the container unusable.
  • WO 2009/004097 discloses a valve resolving the problem of moisture ingress, wherein the grommet is a dual plastic grommet that is manufactured in two materials.
  • the skirt is manufactured in a material having a hardness that is greater hardness of the tubular member.
  • WO 2005/102867 discloses another valve resolving the problem of moisture ingress, by altering the design of the grommet.
  • WO 2005/102867 describes a so called flat grommet, wherein the skirt of the grommet is designed as a flat flange with a reduced thickness of less than 4 mm. This altered grommet design limits the surface through which moisture can penetrate into the container and hence improves shelf life of the container.
  • said flat grommet has the inconvenience that the skirt is compressed by the stem at elevated pressure levels in the container at which for example polyurethane foam compositions are stored. Due to that compression of the skirt, the stem protrudes further through the cup and increases the risk of accidental opening of the valve by contact therewith, for example at the time of mounting a dispensing gun on the container.
  • the present invention meets this demand by providing a new grommet that ensures extended shelf life of the fluid in the concerned container and that is easy in manufacture and valve assembly and allows easy handling of the concerned container.
  • the present invention concerns a valve comprising a grommet and a stem, the grommet comprising a tubular member having an outwardly extending radial skirt at one end, said grommet being manufactured in a single material, characterized in that said material has a hardness ranging between 80 Shore A - 90 Shore A and in that the valve has a gas loss of less than 5 grams per year, preferably less than 3 grams per year, more preferably less than 2,5 grams per year, most preferably less than 1,5 grams per year.
  • the hardness of the grommet material preferably ranges between 85 Shore A and 90 Shore A and even more preferably between 87 Shore A and 90 Shore A.
  • the material preferably has a pressure deformation at room temperature of 25% or less, preferably 20% or less, and more preferably 15% or less according to DIN ISO 815.
  • the grommet is preferably manufactured in a thermoplastic polyurethane (TPU) and more preferably in an aromatic TPU.
  • TPU thermoplastic polyurethane
  • the grommet has a sealing function in view of a stem and a spring function acting on said stem in a closing direction of the valve, such that the valve can lack a spring.
  • the present invention further relates to the use of the above described valve in pressurized containers for storing moisture sensitive liquids such as one or two component polyurethane compositions.
  • Figure 1 represents a cup 1 bearing a gun valve 2 the cup being designed for fixing on a container for closing it.
  • Figure 2 represents a cross section visualizing the gun valve 2 that comprises a grommet 3 and a stem 4.
  • the grommet 3 is fixed in a sealing relation in an orifice 5 in the cup 1 of the container and grommet essentially comprises a tubular member 6 having an outwardly extending skirt 7 at one end thereof.
  • the other end 8 of the tubular element 6 is preferably free.
  • annular groove 9 is provided in the outer surface of the tubular member 6, adjacent to the skirt 7, that is designed to snap fit with edges 10 of an orifice in the cup 1 to fix the grommet 3 in a sealing relation in the cup 1, such that the skirt 7 is located inside the container when assembled, whereas the tubular member 6 extends through the orifice out of the container.
  • the grommet is manufactured in a single material having a hardness ranging between 80 Shore A - 90 Shore A and preferably between 85 Shore A and 90 Shore A, most preferably between 87 Shore A and 90 Shore A.
  • the grommet material further preferably has a pressure deformation at room temperature of 20% or more preferably 15% or less according to DIN ISO 815.
  • the grommet is preferably manufactured in a thermoplastic polyurethane (TPU), more preferably an aromatic TPU.
  • TPU thermoplastic polyurethane
  • a suitable TPU with a hardness 85 Shore A is described in for example US 2008/207846 A1 .
  • the stem 4 is preferably manufactured in a dimensionally stable material such as polypropylene or polyethylene either or not comprising glass fibers and comprises a hollow shaft 11 extending perpendicularly from a base plate 12 and a radially extending shoulder 13 provided on the shaft 11 at a defined distance from the base plate 12.
  • the distance between the facing surfaces of the base plate 12 and the shoulder 13 being slightly smaller than the distance between a surface 14 of the grommet's skirt 7 facing away from the tubular element 6 and the free end 8 of the tubular member of the grommet 3.
  • a series of openings 15 is provided through which, in an open position of the valve, a fluid to be dispensed can flow from the container through the shaft of the stem 4.
  • the grommet 3 is snap fitted in the cup 1 of the container such that the skirt 7 abuts the inner surface of the cup 1.
  • the stem 4 is mounted in the grommet 3 such that the base plate is located in the container and abuts the surface of the skirt facing away from the grommet's tubular member 6, this surface of the skirt 7 defining the valve seat.
  • the shaft 11 of the stem extends through the tubular member 6 out of the container, whereby the shoulder 13 faces the free end of the tubular member 6, thereby preventing that the stem 4 can be pressed through the grommet into the container and at least slightly compressing the tubular member in the longitudinal direction, such that the tubular member exerts a force on the stem in a closing direction of the valve.
  • the gun valve In use, the gun valve is forced into a closed position by, on the one hand a spring functionality of the grommet and in particular of the tubular member 6 acting on the shoulder 13 of the shaft 11, and on the other hand, by the pressure inside the container, acting on the base of the stem and forcing it in close abutment with the grommet's skirt 7.
  • valve At release of the pressure applied on the stem, the valve is forced closed by the spring function of the tubular member regaining its uncompressed state and by the pressure inside the container that is higher than ambient pressure.
  • the valve according to the present invention preferably lacks a separate spring acting on the stem in a valve closing direction.
  • valve has a gas loss of less than 5 grams per year, preferably less than 3 grams per year, even more preferably of less than 2,5 grams per year and most preferably less than 1,5 grams per year.
  • the gas loss in grams/year is measured by providing the valve on a container in a sealing relation and filling the container with a gas mixture of 4 volume parts of LPG (LPG being defined by a mixture of 46,5% propane; 33,5% butane and 20% isobutane) and 1 volume part of dimethylether upto a pressure of 6 bar at 23°C.
  • LPG being defined by a mixture of 46,5% propane; 33,5% butane and 20% isobutane
  • the container is than stored at 23°C in a position wherein the valve is situated at the top of the container.
  • the amount of gas escaping from the closed container with the valve kept closed is measured weekly for upto 8 weeks, by measuring the loss of weight of the closed container and the results are extrapolated to a period of a year, resulting in a value of X grams per year of gas lost.
  • Figures 3 and 4 represent a gun valve 20 wherein the design of the skirt 27 of the grommet 23 is slightly different in that the thickness thereof is larger.
  • the design corresponds to the design of the valve as described in WO 2004/002986 .
  • the functionality of this gun valve is essentially similar to what is described above.
  • Figures 5 and 6 represent a tilting valve 30 with a design similar to the valve represented in claims 1 and 2, with the only difference that the shaft 311 of the stem 34 is provided with a screw thread at it's free end.
  • Figures 7 and 8 represents a tilting valve 40 with the grommet design corresponding to that in figures 3 and 4 .
  • the valve according to the present invention is particularly suitable for use in pressurized containers storing moisture sensitive liquids, such as for example one or two component polyurethane (foam) compositions.
  • moisture sensitive liquids such as for example one or two component polyurethane (foam) compositions.
EP10159274A 2010-04-07 2010-04-07 Hochleistungsventil Withdrawn EP2374731A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10159274A EP2374731A1 (de) 2010-04-07 2010-04-07 Hochleistungsventil
PCT/EP2011/055020 WO2011124520A1 (en) 2010-04-07 2011-03-31 High performance valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10159274A EP2374731A1 (de) 2010-04-07 2010-04-07 Hochleistungsventil

Publications (1)

Publication Number Publication Date
EP2374731A1 true EP2374731A1 (de) 2011-10-12

Family

ID=42646257

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10159274A Withdrawn EP2374731A1 (de) 2010-04-07 2010-04-07 Hochleistungsventil

Country Status (2)

Country Link
EP (1) EP2374731A1 (de)
WO (1) WO2011124520A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016009332A1 (en) 2014-07-14 2016-01-21 Clayton Corporation Valve mounting cup for a pressurized container

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954903A (en) * 1957-10-11 1960-10-04 Pressure Dispensers Inc Dispenser valve for pressurized containers
US4171074A (en) * 1977-05-09 1979-10-16 Diamond George B Pressure responsive tilt valve for pressurized container
US4532690A (en) * 1980-08-04 1985-08-06 Luigi Del Bon Process for producing a valve-and-lid assembly
WO2004002986A2 (en) 2002-06-28 2004-01-08 Banyu Pharmaceutical Co., Ltd. Novel benzimidazole derivatives
WO2005102867A1 (en) 2004-04-23 2005-11-03 Aster De Schrijver Valves with reduced flat grommet height
US20080207846A1 (en) 2005-06-16 2008-08-28 Basf Aktiengesellschaft Patents, Trademarks And Licenses Isocyanate-Containing Thermoplastic Polyurethane
WO2009004097A1 (en) 2007-07-05 2009-01-08 Aster De Schrijver Aerosol valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954903A (en) * 1957-10-11 1960-10-04 Pressure Dispensers Inc Dispenser valve for pressurized containers
US4171074A (en) * 1977-05-09 1979-10-16 Diamond George B Pressure responsive tilt valve for pressurized container
US4532690A (en) * 1980-08-04 1985-08-06 Luigi Del Bon Process for producing a valve-and-lid assembly
WO2004002986A2 (en) 2002-06-28 2004-01-08 Banyu Pharmaceutical Co., Ltd. Novel benzimidazole derivatives
WO2005102867A1 (en) 2004-04-23 2005-11-03 Aster De Schrijver Valves with reduced flat grommet height
US20080207846A1 (en) 2005-06-16 2008-08-28 Basf Aktiengesellschaft Patents, Trademarks And Licenses Isocyanate-Containing Thermoplastic Polyurethane
WO2009004097A1 (en) 2007-07-05 2009-01-08 Aster De Schrijver Aerosol valve

Also Published As

Publication number Publication date
WO2011124520A1 (en) 2011-10-13

Similar Documents

Publication Publication Date Title
US3876115A (en) Double expansible bladder container
RU2692992C9 (ru) Аэрозольный баллончик с устройством активации однонаправленного перемещения и способ изготовления такого аэрозольного баллончика
US10106309B2 (en) Handheld applicator suitable for gun valve containers
US20060081804A1 (en) Non-refillable valve
US6595230B2 (en) Non-refillable valve for a gas cylinder
NO170069B (no) Trykkgassdrevet doseringsanordning
US7188753B2 (en) Pressure release connection and pneumatic dispensing device
EP2374731A1 (de) Hochleistungsventil
US20160152404A1 (en) Fluid dispensing apparatus and method
ZA201101515B (en) Foam spray gun hoses which prevent crossover
US20200024041A1 (en) Pressure relief cap
US6484900B1 (en) Transparent fuel canister
CN113227616A (zh) 用于液体储存容器的止回阀和总成
US10919687B2 (en) Dispenser with cap
KR101838644B1 (ko) 압축 유체를 수용하는 용기용 측정 캡 및 이 캡을 구비한 용기
EP2268410B1 (de) Druckausgleichselement
GB2059549A (en) Fluid Dispensing Valves
EP1670697B1 (de) Abgabe-betätigungsvorrichtung für druckbehälter
US11745200B2 (en) Dispenser for dispensing flowable masses
CA1295298C (en) Disposable package for dispensing liquids having viscosity compensation means and device therefor
KR101540183B1 (ko) 자동차단형 밸브
US20190274455A1 (en) Valve
WO2011073702A4 (en) Dispensing unit for liquid containers
US20090301574A1 (en) Mechanism for controlling a gauge for indicating the amount of gas remaining in a gas tank

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

AX Request for extension of the european patent

Extension state: AL BA ME RS

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120413