Classifications

• • 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
  • B05B11/0005—Components or details
• • 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
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
  • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
  • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
  • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
  • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
  • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
  • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
• • 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
  • B05B11/1001—Piston pumps
  • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
  • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
• • 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
  • B05B11/1043—Sealing or attachment arrangements between pump and container
  • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
  • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

• the invention relates to a system for dispensing a product under pressure, and a bottle containing a product to be dispensed under pressure using such a dispensing system.
• the product is used in cosmetics, in perfumery or for pharmaceutical treatments, for example in the form of a liquid, a lotion, a gel or a cream.
• Distribution systems comprising a body provided in particular with means for taking a product packaged in a bottle to feed an internal chamber of said body.
• the dispensing system may be in the form of a manually operated pump or a valve for restoring a packaged product in a bottle under pressure.
• Such a dispensing system conventionally comprises a rod on which is mounted a push button to be reversibly actuated in translation.
• the rod is equipped with a valve which is disposed in the internal chamber between a stable state of closure of a distribution path formed through said rod and the push button to a dispensing orifice, and a state constrained by actuating the rod in which said distribution path is in communication with the internal chamber for the pressure outlet of the product.
• the rod When actuated, the rod is subjected to significant mechanical stresses that require the use of a material whose rigidity must be sufficient to prevent the deformation of said rod, the operation of the distribution system is altered.
• deformations can lead to breakage of the rod as well as a loss of tightness of the assembly on said stem of the valve and / or the push button, these members being generally made of a material that is more flexible than that of the stem.
• the stem of a dispensing system can be made from a polymer of the family of polyacetals, especially polyoxymethylene (POM), also known as acetal. Indeed, the use of this type of material is satisfactory especially in terms of its mechanical and chemical properties, slip, dimensional stability, low moisture recovery.
• POM polyoxymethylene
• POM is now recognized as potentially toxicological, mainly due to the release of formaldehyde during its hot injection in manufacturing molds, as well as the destruction of end-of-life distribution systems.
• various directives aim to regulate, control and limit the presence of substances potentially harmful to human health in products including cosmetics, which pushes cosmeticians to limit or eliminate from their formulas preservatives that are often cause allergies or intolerance.
• Cosmetics therefore become increasingly fragile, being easily contaminated by bacteria and fungi and difficult to support including contact with air that can cause eg drying or oxidation of the product.
• the POM has a porosity that is too important to be able to contribute to the good preservation of the product before distribution.
• the air can diffuse through the POM in sufficient quantity to be able to contaminate and / or oxidize the product contained in the rod between two distributions, said product can also be dried by evaporation through said POM rod.
• the pharmaceutical and cosmetic industries may have to sterilize their distribution systems to avoid any contamination of the product prior to its first distribution.
• the fastest and most effective way to sterilize a product dispensing system is to expose it to gamma or beta radiation, in particular by allowing the sterilization of closed volumes.
• irradiation tends to modify the properties of the POM, in particular by mechanically weakening it and making it change its appearance.
• dispensing systems whose rod is made based on POM must be sterilized under gas, in particular under ethylene oxide, this process proving less effective and more complex to implement industrially than irradiation under radius gamma or beta.
• the invention aims to improve the prior art by proposing in particular a distribution system whose stem contributes to a good preservation of the product to be dispensed, while exhibiting toxicological, mechanical and chemical properties that optimize its use.
• a dispensing system according to the invention with a bottle, optionally sterilized, containing a product is particularly advantageous, especially in relation to a product whose preservative content is limited or even zero.
• the invention provides a system for dispensing a product under pressure comprising a body equipped with means for feeding an internal chamber of said body with product from a source, said system also comprising a rod on which is mounted a push button to be actuated reversibly in translation in said body, said rod being equipped with a valve which is disposed in the inner chamber in a stable state of closure of a formed distribution path through the rod and the push button to a dispensing orifice, and a state constrained by actuation of the rod in which said dispensing path is in communication with the internal chamber, said rod being made from a material including at least a polyolefin which is charged with at least one COC cyclic olefin copolymer.
• the invention provides a bottle comprising a neck on which the body of such a dispensing system is associated so as to allow the supply of the inner chamber product.
• the spatial positioning terms are taken with reference to the position of the dispensing system shown in the figure.
• a manually operated dispensing system is described below to allow the dispensing of a product under pressure, for example in the form of an aerosol, a hazelnut or a continuous stream depending on the nature of said product.
• the product is in the form of a liquid, a lotion, a gel or a cream, for a cosmetic use, perfumery or for pharmaceutical treatments.
• the dispensing system comprises a body 1 in which is formed an internal chamber 2 which is supplied with product from a source, said body being equipped with means for feeding said internal chamber.
• the body 1 has a supply port 3, for example equipped with a dip tube 4, which is intended to be in communication with the interior of a product packaging bottle for its collection.
• the body 1 may be equipped with a peripheral ring 5 for sealing said body in the neck of a bottle by placing the supply port 3 in communication with the packaged product in said bottle.
• the hoop 5 is deformable, for example by being made of aluminum, to ensure its tight crimping around the neck.
• the invention is not limited to a particular embodiment of the mounting of the dispensing system on the bottle, which can be achieved in particular by screwing, welding or snap tight.
• the dispensing system comprises a rod 6 for supplying the pressurized product which is disposed in the body 1 by being reversibly operable in translation on a stroke respectively of distribution and suction of said product via a push button 7 which is mounted on said rod.
• the rod 6 is equipped with an exhaust valve 8 which is disposed in the internal chamber 2 by having a stable state of closure of a distribution path formed through the rod 6 and the push button 7 to a dispensing orifice 9, and a state constrained by actuation of said rod in which said distribution path is in communication with said internal chamber.
• the distribution of the product is carried out by digital pressing on the push button 7 to move it axially by actuating the translation of the rod 6 in order to convey the product from the inner chamber 2 to the dispensing orifice 9 by which said product fate.
• the rod 6 is made of a material whose rigidity is sufficient to prevent the deformation of said rod, the operation of the distribution system not be altered.
• the material of the rod 6 must have satisfactory sliding properties and resistance to wear and creep.
• the material of the rod 6 comprises at least one polyolefin which is charged with at least one cyclic olefin COC copolymer.
• a polyolefin loaded with COC also contributes to a good preservation of the product to be dispensed. Indeed, the porosity of this material is sufficiently low to prevent air and water from diffusing through the rod 6, thus limiting the contamination, drying and / or oxidation of the product contained in said rod. between two distributions. Furthermore, a polyolefin loaded with COC retains its properties, especially mechanical and appearance, under gamma or beta radiation, which allows for a rapid and efficient sterilization of the dispensing system.
• a vial according to the invention is particularly advantageous for dispensing a product whose preservative content is limited or even zero and / or to be sterilized.
• a polyolefin loaded with COC limits the toxicological risks, especially in that it is not likely to release toxic component during its heating or its destruction at the end of life.
• a polyolefin rod 6 loaded with COC may be made by molding, from tools and injection stages conventionally used for the organs of a distribution system.
• an optimal compromise between the preservation of the product to be dispensed and the toxicological, mechanical and chemical properties of the rod 6 is obtained by loading a polyolefin with a percentage by weight of COC which is between 10 and 50%.
• the polyolefin used may have good intrinsic mechanical properties, in particular being based on polypropylene.
• the polypropylene is a homopolymer with a COC content of about 30%
• the COC may be of the type marketed under the name TOPAS by the company TOPAS ADVANCED POLYMERS.
• a dispensing pump arranged to restore a liquid product in the form of an aerosol is described below.
• the invention is not limited to a particular type of dispensing system, nor to a particular dispensing form.
• the distribution path passes through an internal channel 10 formed in the rod 6, said channel being in communication with two radial upstream orifices 1 1 and opening into the upper end of said rod.
• the push button 7 has a well 12 which is mounted around the upper end of the rod 6 in order to pass the distribution path through the inner channel 10 and said well.
• the push button 7 has a housing 13 into which the dispensing path opens, a nozzle 14 provided with the dispensing orifice 9 being mounted in said housing.
• the nozzle 14 is in communication with the mounting shaft 12 via a channel 15 provided in the push button 7, the distribution path passing through said channel.
• the distribution path opens into a swirl chamber 16 which is formed between the nozzle 14 and a bearing 17 of the housing 13, said swirl chamber being provided with the dispensing orifice 9.
• the nozzle 14 may be under the shape of an extension tube.
• the assemblies are made by fitting together, the nozzle 14 being further equipped with a radial projection 18 forming a harpooning means in the housing 13.
• said nozzle may be made of a material comprising at least one polyolefin which is charged with at least one COC.
• the housing 13 may be made of uncharged polyolefin COC to provide flexibility promoting good harpooning of the rigid projection 18.
• at least the well 12 may be made of non-COC filled polyolefin to exhibit rigidity less than that of the rod 6 to promote the mechanical strength and tightness of the assembly between the push button 7 and said rod.
• the push button 7 is made in one piece based on a polyolefin material, especially based on polyethylene, not loaded with COC to allow, in addition to the mechanical strength and sealing at the mounting areas with the nozzle 14 and the rod 6, a more qualitative touch when pressing on said push button.
• the valve 8 of the rod 6 comprises a piston 19 which is mounted coaxially around said rod by having an outer sealing surface 20 which is sealingly abutting in the inner chamber 2 to form between said piston and the supply port 3 a metering chamber of the product.
• the piston 19 also has an internal sealing surface 21 which is operable in displacement relative to at least one upstream orifice 1 1 of the distribution path.
• the piston 19 has a sleeve 22 slidably mounted around the rod 6, said assembly being arranged to allow the reversible displacement of the inner sealing surface 21 between a stable state of closure and a constrained state of opening of the communication of the distribution path with the internal chamber 2.
• the actuation of the scope internal sealing 21 between its two states can be achieved by deformation of the piston 19.
• the piston 19 may be made of a softer material than that of the rod 6 and the body 1, for example made of polyolefin, especially based on polyethylene not loaded with COC, in order to ensure the sealing of the internal chamber 2 at the 20 outer and inner sealing surfaces 21, while being able to benefit from a low coefficient of friction between said rod and said piston.
• the pump comprises a spring 23 which is disposed in the inner chamber 2, between the rod 6 and the body 1, to return said stem in a stable state after its actuation on its dispensing stroke.
• the rod 6 is equipped with a lower abutment 24 reported on which the spring 23 is supported.
• a precompression spring 25 which is mounted in abutment between the sleeve 22 and a radial projection 26 of the rod 6, said pre-compression spring exerting a plating force on the bearing surface. internal sealing 21 against the lower stop 24 to ensure the sealing of the upstream orifices 1 1 between two distributions.
• the bottom stop 24 may be made of a material similar to that of the rod 6, that is to say based on a material comprising at least one polyolefin which is charged with at least one COC.
• the supply port 3 is surmounted by a seat 27 with respect to which an inlet valve in the form of a ball 28 is reversibly movable between an open state of said seat to allow feeding of the inner chamber 2 and a closed state of said seat.
• the inlet valve and the seat 27 may be made of materials having different stiffnesses.
• the seat 27 may be more flexible than the intake valve, said seat and said valve being made of polyolefin respectively unfilled and loaded with COC.
• the seat 27 and the inlet valve may be made of polyolefin respectively loaded and uncharged COC
• the seat 27 is made in one piece with the body 1 from a polyolefin material, for example based on polypropylene, which is not loaded with COC.

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• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

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Applications Claiming Priority (2)

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Citations (4)

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• 2013
  • 2013-10-15 FR FR1360024A patent/FR3011830B1/fr active Active
• 2014
  • 2014-10-03 WO PCT/FR2014/052516 patent/WO2015055915A1/fr active Application Filing
  • 2014-10-03 EP EP14787240.2A patent/EP3057715B2/de active Active
  • 2014-10-03 EP EP18158045.7A patent/EP3363544B2/de active Active
  • 2014-10-03 ES ES14787240T patent/ES2682682T5/es active Active

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