EP3609809A1 - Valve doseuse pour distributeur de produit fluide - Google Patents
Valve doseuse pour distributeur de produit fluideInfo
- Publication number
- EP3609809A1 EP3609809A1 EP18724939.6A EP18724939A EP3609809A1 EP 3609809 A1 EP3609809 A1 EP 3609809A1 EP 18724939 A EP18724939 A EP 18724939A EP 3609809 A1 EP3609809 A1 EP 3609809A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pbt
- metering
- matrix
- glass microspheres
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 11
- 239000004005 microsphere Substances 0.000 claims abstract description 28
- 239000011521 glass Substances 0.000 claims abstract description 18
- 239000011159 matrix material Substances 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 10
- -1 polybutylene Polymers 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 27
- 239000003380 propellant Substances 0.000 claims description 2
- 230000000284 resting effect Effects 0.000 claims description 2
- 229920001748 polybutylene Polymers 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000002667 nucleating agent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012632 extractable Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- OBRNDARFFFHCGE-PERKLWIXSA-N (S,S)-formoterol fumarate Chemical compound OC(=O)\C=C\C(O)=O.C1=CC(OC)=CC=C1C[C@H](C)NC[C@@H](O)C1=CC=C(O)C(NC=O)=C1.C1=CC(OC)=CC=C1C[C@H](C)NC[C@@H](O)C1=CC=C(O)C(NC=O)=C1 OBRNDARFFFHCGE-PERKLWIXSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 208000018747 cerebellar ataxia with neuropathy and bilateral vestibular areflexia syndrome Diseases 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229960000193 formoterol fumarate Drugs 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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 pharmaceutical, but this type of valve can also be used in other fields, for example cosmetics or perfumery.
- the metering valves of the prior art comprise a valve body defining a metering chamber in which a valve slides between resting and operating positions.
- the valve body and the valve are mostly made by molding plastics of the polymer type, such as polyethylene (PE), polypropylene (PP), polyacetal (POM) or polybutylene terephthalate (PBT).
- PE polyethylene
- PP polypropylene
- POM polyacetal
- PBT polybutylene terephthalate
- the metering valves must meet the requirements of reduced tolerances and be of great dimensional stability for their very small components that constitute them. There is also a requirement of perfect cylindricity for these metering valve components, necessary to maintain the sealing points of the valve, despite a pressure of 5 bar that is found in the tank.
- the injection-molding process is widely used for the production of parts for applications such as packaging, electricity, automotive, cosmetics or consumer goods. This process is also used in the advanced industry such as medical, pharmaceutical, aeronautic or nuclear.
- the appearance of injected parts is a very important criterion, especially for medical applications for which a high level of quality is essential to guarantee patient safety.
- some defects in appearance can be generated during the production of parts and their control in large-scale production can be difficult.
- the presence of defects, especially on safety parts can cause malfunctions or fragility of devices such as metering valves.
- defects can be remedied in several ways, for example by changing the parameters of the injection-molding process, by changing the design of the molding, or by adding additives to the polymers to improve their molding performance.
- Nucleating agents are the most used additives, especially for eliminating surface defects. These nucleating agents act by modifying the kinetics of crystallization. These nucleating agents can be based on talc or organic products. Other products, such as blowing agents, may also be employed. They break down during the molding process to give a foamed structure. They can be based on sodium bicarbonate and sodium citrate.
- the present invention aims to overcome the aforementioned problems.
- the present invention also aims to provide such a metering valve for a reliable product distribution, regular and reproducible at each actuation of the dispenser.
- the present invention also aims to provide a simple and inexpensive metering valve to manufacture and assemble.
- the subject of the present invention is therefore a metering valve for a fluid dispenser, comprising a valve body defining a metering chamber in which a valve slides between positions. rest and actuation device, said valve body and / or said valve being made by injection molding of a material comprising a polybutylene terephthalate (PBT) matrix and glass microspheres dispersed in said PBT matrix.
- PBT polybutylene terephthalate
- said glass microspheres have a diameter of between 1 and 2000 ⁇ , advantageously between 1 and 100 ⁇ .
- said glass microspheres are added to the PBT matrix at a level of between 1 and 20% by weight, advantageously between 1 and 15% by weight.
- the present invention also relates to a fluid dispenser comprising a reservoir containing fluid to be dispensed, and a metering valve as described above.
- said dispenser comprises an HFA gas as a propellant.
- FIG. 1 is a schematic sectional view of a metering valve according to an advantageous embodiment
- FIG. 2 is a graph comparing the Young's modulus of PBT alone and with various additives with that of PBT comprising microspheres according to the invention.
- FIG. 3 is a graph comparing the coefficient of friction of PBT alone with that of PBT comprising microspheres according to the invention.
- the metering valve shown in FIG. 1 is of the retention type. It is understood, however, that this is only an example, and that the present invention applies to all types of metering valves.
- the valve comprises a valve body 10 extending along a longitudinal axis A. Within said valve body 10, a valve 30 slides between a rest position, which is that shown in Figure 1, and a dispensing position, in which the valve 30 is pressed inside the valve body 10.
- This valve is intended to be assembled on a reservoir 1, preferably by means of a fastening element 5, which may be a crimp, screw or snap-on cap, and advantageously with the interposition of a neck seal 6.
- a ring 4 can be assembled around the valve body, in particular to reduce the dead volume in the inverted position and to limit the contact of the fluid with the neck seal.
- This ring may be of any shape, and the example of Figure 1 is not limiting.
- the valve 30 is biased towards its rest position by a spring 8, which is arranged in the valve body 10 and which cooperates on the one hand with this valve body 10, and on the other hand with the valve 30, preferably with a radial collar 320 of the valve 30.
- a metering chamber 20 is defined inside the valve body 10, said valve 30 sliding inside said metering chamber to allow the distribution of the contents thereof. when the valve is actuated.
- the metering chamber is preferably defined between two annular seals, a valve seal 21 and a chamber seal 22, as is well known.
- FIG. 1 shows the valve in the upright storage position, that is to say the position in which the metering chamber 20 is disposed above the tank 1.
- the valve 30 has an outlet port 301 connected to an inlet port 302, which is disposed in the metering chamber 20 when the valve 30 is in the dispensing position.
- the valve 30 can be made in two parts, namely an upper part 31 (also called high valve) and a lower part 32 (also called bottom valve).
- the lower part 32 is in this embodiment assembled inside the high part 31.
- An internal channel 33 is provided in the valve 30 which makes it possible to connect the metering chamber 20 to the reservoir 1, to fill said metering chamber 20 when, after each actuation of the valve, the valve 30 returns to its rest position under the The effect of the spring 8. This filling is done when the device is still in the inverted position of use, with the valve disposed below the tank.
- said valve body and / or said valve is (are) produced by injection molding of a material comprising a polybutylene terephthalate (PBT) matrix and glass microspheres dispersed in said PBT matrix.
- PBT polybutylene terephthalate
- the solid glass microspheres are made from glass, advantageously recycled, and have the advantage of not containing free silica or heavy metals. They are in the form of powder. They have a basic pH, which is favorable when we want to limit the interactions with the active ingredients. They can be subjected to a coupling agent surface treatment, selected according to the nature of the matrix, and which allows a better adhesion between the microsphere and the matrix and a better dispersion.
- microspheres of glasses typically have a diameter of between 1 and 2000 ⁇ .
- glass microspheres with a diameter of between 3 and 100 ⁇ were used, with a median diameter of between 10 and 30 ⁇ .
- These microspheres may be added to the PBT matrix at a level of between 1 and 20% by weight, advantageously between 1 and 15% by weight.
- the microspheres make it possible to reduce the variability of crystallinity between the different batches of materials and thus of reduce problems during molding; this makes it possible to substantially reduce or even eliminate the problems of deformation of the components (called shrinkage) and to improve their dimensional stability;
- the microspheres make it possible to increase the mechanical properties of the material in which they are dispersed; to characterize the mechanical strength of a material, tensile measurements are made, which makes it possible to obtain values of tensile stress or Young's modulus;
- Figure 2 shows a significant improvement of the Young's modulus for PBT with glass microspheres, relative to PBT alone and with respect to PBT with various well-known additives, such as nucleating agent, talc or blowing agent;
- Glass microspheres are of mineral origin, they do not bring additional extractables; on the contrary, they have a diluting effect; thus, with a 13% level of glass microsphere in a PBT matrix, a decrease of just over 15% in extractables was observed;
- the microspheres make it possible to reduce the coefficient of friction;
- the coefficient of friction is the ratio of the tensile force (response force allowing the device to move) to the force applied (normal force);
- the dynamic coefficient and the static coefficient are two types of coefficient of friction: the dynamic coefficient and the static coefficient; the static coefficient is the coefficient measured at the beginning of the test; it is the force necessary to move the sample on the substrate and initiate the movement; we also speak of coefficient of adhesion; the dynamic coefficient is the coefficient necessary for the movement to be maintained at a constant speed; in our case, we used the values of the dynamic coefficient because the system is then stable and at constant speed; the test was to rub a steel ball on a defined material (here PBT, with and without microspheres) to determine a coefficient of friction; the results obtained reproduced in FIG.
- microspheres make it possible to reduce the coefficient of friction; this allows to consider including a reduction of friction problems in the valves; the microspheres have no impact on the compatibility with the active principles; this has been tested by directly contacting PBT containing microspheres with active ingredients (for example formoterol fumarate), and by measuring by analytical techniques the degradation of these active principles; the tests carried out did not show impact of glass microspheres on this degradation.
- active ingredients for example formoterol fumarate
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 (2)
Publication Number | Publication Date |
---|---|
EP3609809A1 true EP3609809A1 (fr) | 2020-02-19 |
EP3609809B1 EP3609809B1 (fr) | 2021-06-09 |
Family
ID=58993121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18724939.6A Active EP3609809B1 (fr) | 2017-04-13 | 2018-04-09 | Valve doseuse pour distributeur de produit fluide |
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) |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4111893A (en) * | 1977-05-20 | 1978-09-05 | Gaf Corporation | Polybutylene terephthalate molding resin |
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 |
GB0315791D0 (en) * | 2003-07-07 | 2003-08-13 | 3M Innovative Properties Co | Two component molded valve stems |
FR2852301B1 (fr) * | 2003-03-13 | 2006-02-10 | Valois Sas | Dispositif de distribution de produit fluide |
GB0315801D0 (en) * | 2003-07-07 | 2003-08-13 | 3M Innovative Properties Co | Multi-component valve stems |
JP2005179631A (ja) * | 2003-11-28 | 2005-07-07 | Aisin Seiki Co Ltd | 複合材料及びその製造方法 |
US7503469B2 (en) * | 2005-03-09 | 2009-03-17 | Rexam Closure Systems Inc. | Integrally molded dispensing valve and method of manufacture |
ES2439249T3 (es) * | 2008-02-08 | 2014-01-22 | Greif International Holding B.V. | Válvula para recipientes para líquidos |
US8881944B2 (en) * | 2008-06-30 | 2014-11-11 | S.C. Johnson & Son, Inc. | Overcap for and a method of actuating a volatile material dispenser |
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. |
HUE031396T2 (en) * | 2013-06-28 | 2017-07-28 | Altachem Nv | valve Tag |
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 |
FR3035382B1 (fr) * | 2015-04-24 | 2019-10-18 | Nemera La Verpilliere | Valve doseuse perfectionnee de distribution d'un aerosol comprenant une tige de valve |
KR102672919B1 (ko) * | 2015-08-04 | 2024-06-05 | 코스터 테크날러지 스페셜리 에스.피.에이. | 유체 매체 분사 시스템에서 사용하기 위한 밸브 컵 및 용기 |
CH712902A1 (de) * | 2016-09-12 | 2018-03-15 | Alpla Werke Alwin Lehner Gmbh & Co Kg | Innendruckbeständiger Kunststoffbehälter, insbesondere Kunststoff-Aerosolbehälter. |
US20180169549A1 (en) * | 2016-12-16 | 2018-06-21 | Clarcor Engine Mobile Solutions, Llc | Filter assembly with primer |
-
2017
- 2017-04-13 FR FR1753244A patent/FR3065176B1/fr not_active Expired - Fee Related
-
2018
- 2018-04-09 EP EP18724939.6A patent/EP3609809B1/fr active Active
- 2018-04-09 CN CN201880033525.1A patent/CN110650899A/zh active Pending
- 2018-04-09 WO PCT/FR2018/050884 patent/WO2018189469A1/fr unknown
- 2018-04-09 JP JP2019555897A patent/JP2020520859A/ja active Pending
- 2018-04-09 US US16/604,302 patent/US20200047981A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
FR3065176A1 (fr) | 2018-10-19 |
WO2018189469A1 (fr) | 2018-10-18 |
FR3065176B1 (fr) | 2019-06-07 |
EP3609809B1 (fr) | 2021-06-09 |
CN110650899A (zh) | 2020-01-03 |
US20200047981A1 (en) | 2020-02-13 |
JP2020520859A (ja) | 2020-07-16 |
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