EP3849921A1 - Joint de valve et valve doseuse pour distributeur de produit fluide - Google Patents
Joint de valve et valve doseuse pour distributeur de produit fluideInfo
- Publication number
- EP3849921A1 EP3849921A1 EP19787017.3A EP19787017A EP3849921A1 EP 3849921 A1 EP3849921 A1 EP 3849921A1 EP 19787017 A EP19787017 A EP 19787017A EP 3849921 A1 EP3849921 A1 EP 3849921A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- seal
- elastomeric material
- metering
- microcapsules
- 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 15
- 239000013536 elastomeric material Substances 0.000 claims abstract description 18
- 239000003094 microcapsule Substances 0.000 claims description 18
- 239000004005 microsphere Substances 0.000 claims description 18
- 229920002943 EPDM rubber Polymers 0.000 claims description 17
- 239000000314 lubricant Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229920002545 silicone oil Polymers 0.000 claims description 9
- 239000003380 propellant Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 13
- 229920001296 polysiloxane Polymers 0.000 description 8
- 229920001971 elastomer Polymers 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 229920001707 polybutylene terephthalate Polymers 0.000 description 5
- 229920006324 polyoxymethylene Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- 239000004713 Cyclic olefin copolymer Substances 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012764 mineral filler Substances 0.000 description 2
- 239000004033 plastic Substances 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
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/105—Sealing arrangements around pump actuating stem
-
- 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
- B65D83/75—Aerosol containers not provided for in groups B65D83/16 - B65D83/74
- B65D83/752—Aerosol containers not provided for in groups B65D83/16 - B65D83/74 characterised by the use of specific products or propellants
Definitions
- the present invention relates to a valve seal, a metering valve and a fluid dispenser.
- valve The preferred field of application of such a valve is 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 rest and actuation positions.
- the valve body and the valve are mostly produced by molding plastic materials of the polymer type, such as for example polyacetal (POM) or polybutylene terephthalate (PBT).
- Seals in particular an external seal called a neck seal and two internal seals called a valve seal and a chamber seal, are generally provided in a metering valve.
- the seals are generally made of elastomeric material, such as for example nitrile, ethylene-propylene-diene monomer (EPDM) or the elastomeric cyclic olefin copolymer (COC elastomer).
- Additives before they can fulfill their role as agents lubricants in the elastomer matrix, can be degraded during the manufacturing of the material. There may also be interactions with other ingredients present in the elastomer matrix. This is particularly the case in the presence of mineral fillers, which can absorb these lubricants, thus preventing their migration to the surface of the material.
- the object of the present invention is to overcome the above-mentioned problems.
- the present invention thus aims to provide a valve seal with improved friction properties.
- the present invention also aims to provide a valve seal, a metering valve and a fluid dispensing device simple and inexpensive to manufacture and assemble.
- the present invention therefore relates to a valve seal for a metering valve of a fluid dispenser, said seal being made of a self-lubricating elastomeric material said elastomeric material containing a lubricant, such as silicone oil, said lubricant being encapsulated in the form of microcapsules and / or microspheres, which are added to the elastomeric material of the seal.
- a lubricant such as silicone oil
- the elastomeric material comprises EPDM.
- the lubricant comprises silicone oil.
- microcapsules and / or microspheres containing silicone oil are added to the elastomeric material during the manufacture of the seal.
- the amount of said microcapsules and / or microspheres introduced into the elastomeric material is less than 5% by weight, advantageously approximately 3% by weight of the elastomeric material.
- the present invention also relates to a metering valve of a fluid dispenser, comprising a valve body defining a metering chamber in which slides a valve between rest and actuation positions, said valve comprising a neck seal and at at least one internal seal, said valve sliding against said at least internal seal, said metering valve comprising at least one seal as described above.
- said at least one internal seal is produced as described above.
- the present invention also relates to a fluid dispenser, comprising a reservoir containing the fluid to be dispensed, said dispenser comprising a metering valve as described above.
- the 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 Module at 100% deformation of an EPDM seal, with or without silicone, with an EPDM seal comprising microcapsules or microspheres according to the invention
- FIG. 3 is a graph comparing the Shore A hardness of an EPDM seal, with or without silicone, with an EPDM seal comprising microcapsules or microspheres according to the invention.
- FIG. 4 is a graph comparing the coefficient of friction with respect to the POM and the PBT of an EPDM seal, with or without silicone, with an EPDM seal comprising microcapsules or microspheres according to the invention.
- top and bottom refer to the straight position shown in FIG. 1, and the term “radial” refers to the longitudinal axis of the valve shown in FIG. 1.
- the metering valve shown in Figure 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. More generally, the present invention could also be applied to pump seals not using propellant gas for the distribution of the fluid product.
- the valve of Figure 1 has a valve body 10 extending along a longitudinal axis. Inside said valve body 10, a valve 30 slides between a rest position, which is that shown in FIG. 1, and a dispensing position, in which the valve 30 is inserted inside the valve body 10.
- This valve is intended to be assembled on a reservoir 1, preferably by means of a fixing element 5, which can be a crimp, screw or snap-on capsule, 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 can 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 flange 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 content 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, in a well known manner.
- FIG. 1 shows the valve in the upright storage position, that is to say the position in which the metering chamber 20 is arranged above the reservoir 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 a top part 31 (also called top of valve) and a lower part 32 (also called valve bottom).
- the lower part 32 is in this embodiment assembled inside the upper 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 effect of the spring 8. This filling takes place when the device is still in the inverted position of use, with the valve arranged below of the tank.
- the metering valve contains a propellant gas, in particular of the well-known HFA type.
- At least one valve seal in particular at least one internal seal 21, 22, is made of a self-lubricating elastomeric material, a lubricant, such as silicone oil, being encapsulated in the form of microcapsules and / or microspheres, which are added to the elastomeric material of the seal.
- a lubricant such as silicone oil
- Microencapsulation allows liquids or solids to be trapped in a polymer membrane in order to protect them from the external environment or to control their release in a chosen environment.
- a polymer membrane in order to protect them from the external environment or to control their release in a chosen environment.
- microcapsule which can be likened to a reservoir trapping a liquid active material (more or less viscous);
- microsphere which is a macromolecular network that looks like small pockets filled with active ingredients (like a sponge).
- the active ingredient can be released in several ways. It can be brutal, under the effect of a constraint such as heat or pressure in the case of microcapsules.
- the microspheres allow a gradual release of the encapsulated product. Eventually, we may consider combining the two effects, adding microcapsules and microspheres simultaneously.
- microcaspsules and / or microspheres can vary between 5 and 100pm.
- microcapsules or microspheres of silicone oil were introduced up to 3% by weight into the EPDM material forming a valve seal.
- the method of addition is done as for the other ingredients (mineral fillers, antioxidant, vulcanizing agent, etc.) usually added in an EPDM material.
- an amount is provided which is less than 5% by weight.
- Figure 2 illustrates the Module at 100% deformation
- Figure 3 the Shore A hardness. It can be seen that the addition of microcapsules and microspheres has no negative impact on these mechanical properties of the elastomer, here EPDM.
- Figure 4 illustrates the coefficient of friction for these same materials, on the one hand on POM and on the other hand on PBT.
- the test consists in rubbing EPDM on plastic materials (POM & PBT) in order to determine a coefficient of friction.
- the coefficient of friction is the ratio of the tensile force (response force allowing the device to move) over the applied force (normal force).
- the static coefficient is the coefficient measured at the start of the test.
- the dynamic coefficient is the coefficient necessary for the movement to be maintained at a constant speed.
- the dynamic coefficient values were used, with the system stable and at constant speed.
- the encapsulation of the lubricant makes it possible to confine it to prevent it from being absorbed or degraded during the manufacturing process of the material. In addition, it makes it available on the surface of the material when the microcapsules break under mechanical stress, by friction or pressure.
- the invention therefore makes it possible to reduce the problems of friction in the valves, and therefore to eliminate or at least limit the risks of sticking.
- the addition of talc on the elastomeric bands to avoid stickiness during storage is no longer necessary, which reduces the costs of manufacturing the seals, and therefore the valve.
- the assembly of the valves is also simplified by reducing or eliminating the use of silicone when stamping the joints.
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)
- Compositions Of Macromolecular Compounds (AREA)
- Nozzles (AREA)
- Gasket Seals (AREA)
- Closures For Containers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1858131A FR3085734B1 (fr) | 2018-09-11 | 2018-09-11 | Joint de valve et valve doseuse pour distributeur de produit fluide. |
PCT/FR2019/052062 WO2020053508A1 (fr) | 2018-09-11 | 2019-09-09 | Joint de valve et valve doseuse pour distributeur de produit fluide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3849921A1 true EP3849921A1 (fr) | 2021-07-21 |
EP3849921B1 EP3849921B1 (fr) | 2022-11-02 |
Family
ID=64049410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19787017.3A Active EP3849921B1 (fr) | 2018-09-11 | 2019-09-09 | Joint de valve et valve doseuse pour distributeur de produit fluide |
Country Status (7)
Country | Link |
---|---|
US (1) | US20220048696A1 (fr) |
EP (1) | EP3849921B1 (fr) |
JP (1) | JP7427674B2 (fr) |
CN (1) | CN112739627B (fr) |
BR (1) | BR112021004267A2 (fr) |
FR (1) | FR3085734B1 (fr) |
WO (1) | WO2020053508A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4121217A1 (fr) * | 2020-03-18 | 2023-01-25 | Boehringer Ingelheim Microparts GmbH | Procédé d'assemblage de dispositifs de distribution et dispositif de distribution |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5670126A (en) * | 1979-11-06 | 1981-06-11 | Seiko Epson Corp | Self-luburicating part |
GB2329939A (en) * | 1997-06-26 | 1999-04-07 | Glaxo Group Ltd | Self-lubricating valve stem for aerosol containers |
GB9906640D0 (en) * | 1999-03-24 | 1999-05-19 | Glaxo Group Ltd | Valve |
GB9918627D0 (en) * | 1999-08-07 | 1999-10-13 | Glaxo Group Ltd | Valve |
DE60115881T2 (de) * | 2000-05-23 | 2006-08-17 | Glaxo Group Ltd., Greenford | Aerosolbehälter für salmeterol xinafoate |
JP2002097448A (ja) * | 2000-09-21 | 2002-04-02 | Keeper Co Ltd | シール部材 |
JP2005155907A (ja) * | 2003-11-07 | 2005-06-16 | Nsk Ltd | 転がり軸受 |
CN1821330A (zh) * | 2005-02-18 | 2006-08-23 | 弗罗伊登贝格-诺克普通合伙公司 | 硅氧烷衬垫组合物 |
US20070134411A1 (en) * | 2005-12-14 | 2007-06-14 | General Electric Company | Method for making compositions containing microcapsules and compositions made thereof |
CN101348600B (zh) * | 2008-09-02 | 2010-11-10 | 中山大学 | 一种自润滑型环氧树脂材料及其制备方法 |
US20120024632A1 (en) * | 2010-07-27 | 2012-02-02 | Baker Hughes Incorporated | Downhole seal and method of lubricating a downhole tool |
CN104893256A (zh) * | 2015-04-10 | 2015-09-09 | 重庆交通大学 | 高性能复合刹车片材料 |
CN108410350B (zh) * | 2018-01-29 | 2020-07-14 | 清华大学 | 一种内含电磁触发微胶囊的智能自润滑复合材料的制备方法 |
-
2018
- 2018-09-11 FR FR1858131A patent/FR3085734B1/fr active Active
-
2019
- 2019-09-09 EP EP19787017.3A patent/EP3849921B1/fr active Active
- 2019-09-09 US US17/274,913 patent/US20220048696A1/en not_active Abandoned
- 2019-09-09 CN CN201980058897.4A patent/CN112739627B/zh active Active
- 2019-09-09 BR BR112021004267-9A patent/BR112021004267A2/pt unknown
- 2019-09-09 JP JP2021537513A patent/JP7427674B2/ja active Active
- 2019-09-09 WO PCT/FR2019/052062 patent/WO2020053508A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
CN112739627A (zh) | 2021-04-30 |
WO2020053508A1 (fr) | 2020-03-19 |
FR3085734A1 (fr) | 2020-03-13 |
FR3085734B1 (fr) | 2021-01-01 |
EP3849921B1 (fr) | 2022-11-02 |
JP2022500326A (ja) | 2022-01-04 |
US20220048696A1 (en) | 2022-02-17 |
CN112739627B (zh) | 2023-03-28 |
JP7427674B2 (ja) | 2024-02-05 |
BR112021004267A2 (pt) | 2021-05-25 |
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