US20200047981A1 - Dosing valve for a fluid product dispenser - Google Patents

Dosing valve for a fluid product dispenser Download PDF

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Publication number
US20200047981A1
US20200047981A1 US16/604,302 US201816604302A US2020047981A1 US 20200047981 A1 US20200047981 A1 US 20200047981A1 US 201816604302 A US201816604302 A US 201816604302A US 2020047981 A1 US2020047981 A1 US 2020047981A1
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US
United States
Prior art keywords
valve
metering
pbt
glass microspheres
range
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.)
Abandoned
Application number
US16/604,302
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English (en)
Inventor
Patrice Leone
Michael Bazire
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
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 Aptar France SAS filed Critical Aptar France SAS
Assigned to APTAR FRANCE SAS reassignment APTAR FRANCE SAS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAZIRE, Michael, LEONE, PATRICE
Publication of US20200047981A1 publication Critical patent/US20200047981A1/en
Abandoned 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 a metering valve for a fluid dispenser.
  • valve The preferred field of application of such a valve is the field of pharmacy, but this type of valve may also be used in other fields, e.g. the fields of cosmetics or perfumery.
  • the metering valves of the prior art comprise a valve body that defines a metering chamber in which a valve member slides between a rest position and an actuated position.
  • the valve body and the valve member are usually made by molding plastics materials of the polymer type, such as polyethylene (PE), polypropylene (PP), polyacetal or polyoxymethylene (POM), or polybutylene terephthalate (PBT).
  • PE polyethylene
  • PP polypropylene
  • POM polyacetal or polyoxymethylene
  • PBT polybutylene terephthalate
  • metering valves must satisfy requirements for small manufacturing tolerances, and they must provide great dimensional stability for the very small components making them up. There is also a requirement for the metering-valve components to be accurately cylindrical, which is necessary for maintaining the points of sealing in the valve, despite a pressure of 5 bars that exists in the reservoir.
  • the materials used in the components that constitute the metering valves are also requirements for the materials used in the components that constitute the metering valves to have excellent mechanical properties, in particular given the high level of stresses to which they may be subjected, in particular while filling the reservoir through said metering valve and/or while the metering valve is being used by the patient.
  • Other constraints can also affect the reliability of metering valves, such as operating with significant pressure differentials, or abrasion associated with the presence of powder.
  • Injection molding is very widely used for producing parts intended for applications in the packaging, electricity, automotive, cosmetics, and consumer goods industries.
  • the method is also used in high-tech industries such as the medical, pharmaceutical, aeronautical, and nuclear industries.
  • the appearance of the injected parts is a very important criterion, in particular for medical applications for which a high level of quality is essential in order to guarantee the safety of patients.
  • certain defects in appearance may be generated while manufacturing the parts, and monitoring such defects in large scale production can turn out to be tricky.
  • the presence of defects, in particular on safety parts may generate malfunctions or fragility of devices such as metering valves.
  • Various types of defect exist, in particular burrs, webs, air bubbles, streaks, or even incomplete parts.
  • Such defects can be remedied in several ways, e.g. by modifying the parameters of the injection-molding method, by modifying the design of the part to be molded, or by adding additives to the polymers so as to improve their molding performance.
  • Nuclei forming agents are the additives most often used, in particular for eliminating surface defects. Nuclei forming agents act by modifying the crystallization kinetics. Nuclei forming agents may be talc-based or they may be organic substances. Other substances, such as foaming agents may also be used. They decompose during the molding process so as to give a foam structure. They may be based on sodium bicarbonate and sodium citrate.
  • An object of the present invention is to provide a pump that does not have the above-mentioned difficulties.
  • Another object of the present invention is to provide such a metering valve that makes it possible to dispense fluid in reliable, regular, and reproducible manner each time the dispenser is actuated.
  • Another object of the present invention is to provide a metering valve that is simple and inexpensive to manufacture and to assemble.
  • the present invention thus provides a metering valve for a fluid dispenser, the metering valve comprising a valve body that defines a metering chamber in which a valve member slides between a rest position and an actuated position, said valve body and/or said valve member being made by injection-molding a material comprising a PBT matrix and glass microspheres dispersed in said PBT matrix.
  • said glass microspheres have a diameter lying in the range 1 micrometer ( ⁇ m) to 2000 ⁇ m, advantageously in the range 1 ⁇ m to 100 ⁇ m.
  • said glass microspheres are added to the PBT matrix at a content lying in the range 1% to 20% by weight, advantageously in the range 1% to 15% by weight.
  • the present invention also provides a fluid dispenser comprising a reservoir containing fluid to be dispensed, and a metering valve as described above.
  • said dispenser contains a hydrofluoroalkane (HFA) gas as a propellant gas.
  • HFA hydrofluoroalkane
  • FIG. 1 is a diagrammatic section view of a metering valve in an advantageous embodiment
  • FIG. 2 is a bar chart comparing the Young's modulus of PBT on its own and with various additives, with the Young's modulus of PBT including microspheres of the invention.
  • FIG. 3 is a graph comparing the coefficient of friction of PBT on its own with the coefficient of friction of PBT including microspheres of the invention.
  • the terms “upper”, “lower”, “top” and “bottom” refer to the upright position shown in FIG. 1
  • the terms “axial” and “radial” refer to the longitudinal axis of the valve shown in FIG. 1 .
  • the metering valve shown in FIG. 1 is of the retention type. However, it should be understood that this is merely an example, and that the present invention applies to any type of metering valve.
  • the valve includes a valve body 10 that extends along a longitudinal axis A. Inside said valve body 10 , a valve member 30 slides between a rest position, that is the position shown in FIG. 1 , and a dispensing position in which the valve member 30 has been pushed into the valve body 10 .
  • the valve is for assembling on a reservoir 1 , preferably by means of a fastener element 5 that may be a crimpable, screw-fastenable, or snap-fastenable capsule, and a neck gasket 6 is advantageously interposed between the fastener element and the reservoir.
  • a ring 4 may be assembled around the valve body, in particular so as to decrease the dead volume in the upsidedown position, and so as to limit contact between the fluid and the neck gasket.
  • the ring may be of any shape, and the example in FIG. 1 is not limiting.
  • valve member 30 is urged towards its rest position by a spring 8 that is arranged in the valve body 10 and that co-operates firstly with the valve body 10 and secondly with the valve member 30 , preferably with a radial collar 320 of the valve member 30 .
  • a metering chamber 20 is defined inside the valve body 10 , said valve member 30 sliding inside said metering chamber so as to enable its contents to be dispensed when the valve is actuated.
  • the metering chamber is preferably defined between two annular gaskets, namely a valve-member gasket 21 , and a chamber gasket 22 .
  • FIG. 1 shows the valve in the upright storage position, i.e. the position in which the metering chamber 20 is arranged above the reservoir 1 .
  • the valve member 30 includes an outlet orifice 301 that is connected to an inlet orifice 302 that is arranged in the metering chamber 20 when the valve member 30 is in its dispensing position.
  • the valve member 30 may be made of two portions, namely an upper portion 31 (also known as a valve-member top) and a lower portion 32 (also known as a valve-member bottom). In this embodiment, the lower portion 32 is assembled inside the upper portion 31 .
  • An internal channel 33 is provided in the valve member 30 that makes it possible to connect the metering chamber 20 to the reservoir 1 , so as to fill said metering chamber 20 after each actuation of the valve when the valve member 30 returns to its rest position under the effect of the spring 8 . Filling is performed when the device is still in its upsidedown working position, with the valve arranged below the reservoir.
  • valve body and/or said valve member is/are made by injection-molding a material comprising a PBT matrix and glass microspheres dispersed in said PBT matrix.
  • the solid glass microspheres are made of glass, advantageously recycled glass, and present the advantage of containing neither free silica nor heavy metals. They are in powder form. They have a basic pH, which is favorable when it is desired to limit interaction with the active ingredients. They may be subjected to a surface treatment with a coupling agent, which is selected as a function of the nature of the matrix, and which enables better adhesion between the microsphere and the matrix, and also better dispersion.
  • the glass microspheres typically have a diameter lying in the range 1 ⁇ m to 2000 ⁇ m. In the various tests performed and described below, glass microspheres were used of diameter lying in the range 3 ⁇ m to 100 ⁇ m, with a median diameter lying in the range 10 ⁇ m to 30 ⁇ m.
  • the microspheres may be added to the PBT matrix at a content lying in the range 1% to 20% by weight, advantageously in the range 1% to 15% by weight.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Valve Housings (AREA)
  • Nozzles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
US16/604,302 2017-04-13 2018-04-09 Dosing valve for a fluid product dispenser Abandoned US20200047981A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1753244 2017-04-13
FR1753244A FR3065176B1 (fr) 2017-04-13 2017-04-13 Valve doseuse pour distributeur de produit fluide
PCT/FR2018/050884 WO2018189469A1 (fr) 2017-04-13 2018-04-09 Valve doseuse pour distributeur de produit fluide

Publications (1)

Publication Number Publication Date
US20200047981A1 true US20200047981A1 (en) 2020-02-13

Family

ID=58993121

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/604,302 Abandoned US20200047981A1 (en) 2017-04-13 2018-04-09 Dosing valve for a fluid product dispenser

Country Status (6)

Country Link
US (1) US20200047981A1 (fr)
EP (1) EP3609809B1 (fr)
JP (1) JP2020520859A (fr)
CN (1) CN110650899A (fr)
FR (1) FR3065176B1 (fr)
WO (1) WO2018189469A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111893A (en) * 1977-05-20 1978-09-05 Gaf Corporation Polybutylene terephthalate molding resin
US20060249543A1 (en) * 2003-03-13 2006-11-09 Jean-Marc Pardonge Distribution device for fluid product
US7234460B2 (en) * 2002-09-06 2007-06-26 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20080121666A1 (en) * 2003-07-07 2008-05-29 Purkins Graham R Multi-Component Valve Stems
US7503469B2 (en) * 2005-03-09 2009-03-17 Rexam Closure Systems Inc. Integrally molded dispensing valve and method of manufacture
US20090321381A1 (en) * 2008-06-30 2009-12-31 Paas Edward L Overcap for and a method of actuating a volatile material dispenser
US8336854B2 (en) * 2008-02-08 2012-12-25 Greif International Holding B.V. Valve for liquid containers
US20160280888A1 (en) * 2013-06-28 2016-09-29 Altachem Nv Valve member
GB2537756A (en) * 2015-04-24 2016-10-26 Nemera La Verpillière Improved metering valve for dispensing an aerosol comprising a valve stem
US20180169549A1 (en) * 2016-12-16 2018-06-21 Clarcor Engine Mobile Solutions, Llc Filter assembly with primer
US20180222647A1 (en) * 2015-08-04 2018-08-09 Coster Tecnologie Speciali S.p. A. Valve cups and containers for use in fluid medium dispensing systems
US20190225355A1 (en) * 2016-09-12 2019-07-25 Alpla Werke Alwin Lehner Gmbh & Co. Kg Aerosol container made of plastic

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4157325A (en) * 1977-07-11 1979-06-05 Gaf Corporation PBT molding compositions
DE2734950A1 (de) * 1977-08-03 1979-02-15 Agrotop Graef & Habich Gmbh Kunststoffduese
JP3131949B2 (ja) * 1991-10-11 2001-02-05 大日本インキ化学工業株式会社 ポリエステル樹脂組成物
FR2670139B1 (fr) * 1992-01-15 1993-12-24 Valois Valve doseuse utilisable en position inversee.
GB9626960D0 (en) * 1996-12-27 1997-02-12 Glaxo Group Ltd Valve for aerosol container
DE19835273A1 (de) * 1997-09-03 1999-03-04 Bespak Plc Dosierventil für einen Druck-Abgabe-Behälter
JPH11166117A (ja) * 1997-12-02 1999-06-22 Polyplastics Co ポリブチレンテレフタレート樹脂組成物およびその成形品
DE19924098A1 (de) * 1999-05-26 2000-12-07 Boehringer Ingelheim Pharma Edelstahlkanister für treibgasbetriebene Dosieraerosole
JP2005179631A (ja) * 2003-11-28 2005-07-07 Aisin Seiki Co Ltd 複合材料及びその製造方法
CH703028B1 (de) * 2010-04-28 2014-05-30 Coca Cola Co Druckknopf-Dispenser für Flaschen mit karbonisierten Getränken.
FR2968283B1 (fr) * 2010-12-03 2013-01-04 Valois Sas Valve de distribution de produit fluide.
FR2971772B1 (fr) * 2011-02-17 2013-03-22 Valois Sas Dispositif de distribution de produit fluide.
CN103756298B (zh) * 2013-12-03 2017-01-04 惠州市昌亿科技股份有限公司 一种热塑性聚合物基导热复合材料及其制备方法和应用

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111893A (en) * 1977-05-20 1978-09-05 Gaf Corporation Polybutylene terephthalate molding resin
US7234460B2 (en) * 2002-09-06 2007-06-26 3M Innovative Properties Company Metering valve for a metered dose inhaler providing consistent delivery
US20060249543A1 (en) * 2003-03-13 2006-11-09 Jean-Marc Pardonge Distribution device for fluid product
US20080121666A1 (en) * 2003-07-07 2008-05-29 Purkins Graham R Multi-Component Valve Stems
US7503469B2 (en) * 2005-03-09 2009-03-17 Rexam Closure Systems Inc. Integrally molded dispensing valve and method of manufacture
US8336854B2 (en) * 2008-02-08 2012-12-25 Greif International Holding B.V. Valve for liquid containers
US20090321381A1 (en) * 2008-06-30 2009-12-31 Paas Edward L Overcap for and a method of actuating a volatile material dispenser
US20160280888A1 (en) * 2013-06-28 2016-09-29 Altachem Nv Valve member
GB2537756A (en) * 2015-04-24 2016-10-26 Nemera La Verpillière Improved metering valve for dispensing an aerosol comprising a valve stem
US20180222647A1 (en) * 2015-08-04 2018-08-09 Coster Tecnologie Speciali S.p. A. Valve cups and containers for use in fluid medium dispensing systems
US20190225355A1 (en) * 2016-09-12 2019-07-25 Alpla Werke Alwin Lehner Gmbh & Co. Kg Aerosol container made of plastic
US20180169549A1 (en) * 2016-12-16 2018-06-21 Clarcor Engine Mobile Solutions, Llc Filter assembly with primer

Also Published As

Publication number Publication date
FR3065176B1 (fr) 2019-06-07
EP3609809B1 (fr) 2021-06-09
CN110650899A (zh) 2020-01-03
WO2018189469A1 (fr) 2018-10-18
EP3609809A1 (fr) 2020-02-19
JP2020520859A (ja) 2020-07-16
FR3065176A1 (fr) 2018-10-19

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Effective date: 20190925

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION