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
  • B05B11/01—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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
  • B01F23/50—Mixing liquids with solids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
  • B01F25/40—Static mixers
  • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
  • B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
  • B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
  • B01F25/40—Static mixers
  • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
  • B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
  • B01F25/4523—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through sieves, screens or meshes which obstruct the whole diameter of the tube
  • B01F25/45231—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through sieves, screens or meshes which obstruct the whole diameter of the tube the sieves, screens or meshes being cylinders or cones which obstruct the whole diameter of the tube, the flow changing from axial in radial and again in axial
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
  • B01F33/50—Movable or transportable mixing devices or plants
  • B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
  • B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
  • B01F33/50111—Small portable bottles, flasks, vials, e.g. with means for mixing ingredients or for homogenizing their content, e.g. by hand shaking
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/30—Dip tubes
• • 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
  • B65D83/32—Dip-tubes

Definitions

• Fluid composition delivery member dispensing device and method thereof
• the present invention relates to a fluid composition delivery member for mounting in a container containing a heterogeneous mixture comprising:
• a fluid guide duct comprising an upstream opening intended to open into the container, a central passage, and a downstream opening intended to be connected to a dispensing member of the fluid composition out of the container, the guide duct; defining a fluid flow axis through the central passage between the upstream opening and the downstream opening;
• Such an element is intended to form a fluid composition, for example clean to be pumped through a product dispensing member, from a heterogeneous mixture forming a starting composition.
• the heterogeneous mixture contains suspended dispersed elements, such as solid particles, or beads, for example formed of a liquid or gelled heart, surrounded by a gelled bark.
• the fluid composition obtained from the heterogeneous mixture is advantageously intended to be used in the cosmetics, food and / or pharmaceutical field.
• the pumps conventionally used in dispensing devices for fluid compositions are unsuitable for the suction of solutions containing suspended solids.
• suspended solids may block the pump or damage it to the passage of the piston, rendering the dispensing device unusable for the user.
• No. 5,284,275 discloses a delivery member of an adhesive composition formed from beads of a first product dispersed in a second product.
• the element comprises a guide duct and a filtration wall perpendicular to the axis of circulation of the product.
• a piston pushes the balls towards the filtering wall, causing them to rupture.
• An object of the invention is therefore to provide a delivery element of a fluid composition obtained from a heterogeneous medium, which is inexpensive, while being adapted to multiple uses, in the cosmetic, pharmaceutical or food processing fields. .
• the subject of the invention is an element of the aforementioned type, characterized in that the filtering member comprises at least one perforated filtering wall delimiting a plurality of filtration openings, the filtering wall forming an angle Nil with a perpendicular to the axis of circulation.
• the element according to the invention can comprise one or more of the following characteristics, taken in isolation or in any technically possible combination:
• the filter wall is inclined relative to a perpendicular to the axis of circulation, the filter wall being advantageously inclined relative to the axis of circulation;
• the filtering member has a conical or frustoconical shape with an axis parallel to or coincident with the axis of circulation;
• the filtration wall extends along the axis of circulation
• the filter wall is cylindrical in shape, parallel axis or coincident with the axis of circulation;
• each filtration opening has a dimension greater than 0.1 mm and advantageously less than 1 mm;
• the guide duct has an upstream restriction disposed between the upstream opening and the filtering member, the guide duct having a downstream portion of transverse extent, taken with respect to the circulation axis, greater than the transversal extent of the upstream restriction;
• the guide duct has an internal projection projecting into the restriction.
• the subject of the invention is also a device for dispensing a fluid composition, characterized in that it comprises: - a container, intended to contain a heterogeneous mixture;
• a delivery element as described above arranged in the container, for transforming the heterogeneous mixture into the fluid composition
• the dispensing member being connected to the downstream opening of the delivery element.
• the device according to the invention may comprise one or more of the following characteristics, taken in isolation or in any technically possible combination:
• the container comprises a heterogeneous mixture comprising suspended particles, the filter member having filtration openings of transverse extent less than the average diameter of the particles in suspension, preferably less than one third of the average diameter of the particles in suspension;
• the particles in suspension are formed by beads comprising a core and a gelled envelope, the diameter of the balls being advantageously greater than 1 mm;
• the dispensing member is formed by a pump, including a ball pump, a valve pump, a diaphragm pump or a piston pump.
• the invention also relates to a method for dispensing a fluid composition, comprising the following steps:
• the method according to the invention may comprise one or more of the following characteristics, taken separately or in any technically possible combination:
• the heterogeneous mixture comprises particles in suspension, the process comprising the disintegration of the particles in suspension in the delivery element to obtain the fluid composition;
• the disintegration of the particles in suspension is carried out before passing into the filtering member, advantageously in an upstream restriction of the guide duct, the disintegration of the particles in suspension comprising the formation of a residue, the residue being retained on the filter element.
• FIG. 1 is a schematic sectional view along a vertical plane of a first dispensing device comprising a delivery element according to the invention, the device being at rest;
• Figure 2 is a view similar to Figure 1, during the delivery of the product
• FIG. 3 is a view similar to FIG. 1 of a second dispensing device
• Figure 4 is a view similar to Figure 3 of the second dispensing device during the rupture of the dispersed particles.
• FIG. 5 is a view similar to Figure 2 of the second dispensing device
• FIG. 6 is a sectional view along a vertical plane of the delivery element of the second device according to the invention.
• upstream and downstream generally refer to the normal direction of circulation of a fluid.
• FIGS. 1 and 2 A first device 10 for dispensing a fluid composition 12 according to the invention is illustrated in FIGS. 1 and 2.
• This device 10 is intended to form and distribute the fluid composition 12 outside the device 10 from a heterogeneous mixture 14 contained in the device 10.
• the fluid composition 12 is intended to form, for example, a gel, a cream, a mousse, an emulsion, a mist, a spray or an aerosol. It contains at least one product selected from a biologically active product, a cosmetic product, or an edible product suitable for consumption.
• the product is a biologically active product
• it is advantageously chosen from anticoagulants, anti-thrombogenic agents, antimitotic agents, anti-proliferation, anti-adhesion, anti-migration agents, cell adhesion promoters, growth factors, antiparasitic molecules, antiinflammatories, angiogenics, angiogenesis inhibitors, vitamins, hormones, proteins, antifungals, antimicrobial molecules, antiseptics or antibiotics.
• the composition 12 contains reagents such as proteins or reagents.
• a cosmetic product that may be contained in the composition 12 is for example cited in the COUNCIL DIRECTIVE of 27 July 1976 on the approximation of the laws of the Member States relating to cosmetic products (76/768 / EEC / OJ L 262, 27.9.1976, 169).
• This product is for example a cream, an emulsion, a lotion, a gel and a oil for the skin (hands, face, feet, etc.), a foundation (liquid, paste, powders), a beauty mask, foundations (liquids, pastes, powders), a make-up powder, post-bath powder, body care powders, etc., toilet soaps, deodorant soaps, etc.
• perfumes, eau de toilette and cologne a preparation for baths and showers (salts, foams, oils, gels, etc.), a hair care product: hair dyes, bleaches, for waving, straightening, fixation cleaning styling (lotions, powders, shampoos), hair care (lotions, creams, oils), styling (lotions, lacquers, glossines), a cleaning product (lotions, powders, shampoos), a product for shaving (soaps, foams, lotions, etc.), a make-up and makeup removal product for the face and eyes, a product intended to be applied to the lips, a product for the care and make-up of nails, a product for external intimate care, a sun product, a tanning product without sun, a product for whitening the skin, an anti-wrinkle product.
• a hair care product hair dyes, bleaches, for waving, straightening, fixation cleaning styling (lotions, powders, shampoos), hair care (lotions, creams, oils
• An edible product contained in the composition 12, suitable for consumption by a human being or an animal is advantageously purees of vegetables or fruits such as mango puree, pear puree, coconut puree, cream of onions, leeks, carrots, or other preparations that can mix several fruits or vegetables.
• oils such as a food oil, such as olive oil, soybean oil, grape seed oil, sunflower oil, or any other oil extracted from the plants.
• the fluid composition 12 is advantageously homogeneous, without macroscopic particles in suspension.
• macro particles is meant in particular a particle of maximum transverse dimension greater than 200 ⁇ , especially greater than 500 ⁇ .
• the fluid composition 12 is thus advantageously in the form of a first pure liquid fluid, a solution of a fluid in a liquid solvent, or a dispersion such as an emulsion or suspension of fluid in a liquid. , the scattered elements being invisible to the naked eye.
• the viscosity of the fluid composition 12 is generally between 500 mPa.s and 20000 mPa.s. In particular, this viscosity is between 2000 mPa.s and 15000 mPa.s. This viscosity is measured by the following method.
• a Brookfield DV-II viscometer with a spindle of size (No.) 05 was used. About 150 g of composition were placed in a beaker of 250 ml volume, having a diameter of about 7 cm. that the height of the volume occupied by the 150 g of composition is sufficient to reach the gauge marked on the mobile. Then, we start the viscometer on a speed of 10 RPM and wait until the value displayed on the screen is stable.
• the heterogeneous mixture 14 comprises a continuous medium 18 and a plurality of suspended particles 20.
• the continuous medium 18 is thus advantageously in the form of a first pure liquid fluid, a solution of a fluid in a liquid solvent, or a dispersion such as an emulsion or suspension of fluid in a liquid. , the scattered elements being invisible to the naked eye.
• It can form a more or less viscous solution, a gel, a cream, or a mousse, an emulsion, a mist, a spray or an aerosol.
• the viscosity of the medium 18 is generally between 500 mPa.s and 20000 mPa.s. In particular, this viscosity is between 2000mPa.s and 15000mPa.s. This viscosity is measured by the method described above.
• Medium 18 contains at least one product selected from a biologically active product, a cosmetic product, or an edible product suitable for consumption. These products are described above.
• the dispersed particles 20 are formed by solid or semi-solid beads.
• the particles 20 are arranged in the continuous medium 18.
• the mass fraction of particles in heterogeneous medium 14, taken as the total mass of particles 20 relative to the sum of the masses of particles 20 and continuous medium 18 is greater than 1%, advantageously greater than 10%, especially 20%. % or 50%.
• the particles are macroscopic. They are thus visible to the naked eye.
• the diameter of the particles 20 is for example greater than 1 mm, and is especially between 1 mm and 8 mm, in particular between 2 mm and 5 mm.
• the particles 20 are advantageously deformable, in particular deformable elastically or plastically over a deformation range greater than 5% in compression between two flat surfaces.
• the particles are solid and have a very small deformation, in particular less than 1%.
• the deformation of the particles is characterized by an increase in the area of the particles following the application of a mass to a series of particles 20.
• the samples comprising six particles are deposited on a transparent glass plate.
• a Vého Discovery VMS 001 camera connected to a computer is placed so as to observe the underside of the glass plate and therefore the particles by transparency.
• the acquisition software used is Astra Image Webcam Video Grabber.
• a first snapshot is recorded in order to measure the initial particle area.
• a second glass plate is deposited on the particles, and the weight is adjusted so that the mass of the second glass plate plus the ballast corresponds to 100 times the mass of the initial sample (600 times the weight of a particle).
• a second shot is recorded 5 minutes after weighting the second glass plate.
• the recorded snapshots are subsequently exploited with the ImageJ software.
• the measurement of the areas before and after deformation are obtained in pixels. The value averaged over the number of samples of the ratios (final area - initial area) / initial area corresponds to the deformation value.
• the particles are homogeneous. They are for example formed by a continuous solid product such as crosslinked polymers (PMMA, PLGA ...), or even solids (metal, metal oxide) covered with a deformable polymer layer such as the aforementioned polymers.
• a continuous solid product such as crosslinked polymers (PMMA, PLGA 7), or even solids (metal, metal oxide) covered with a deformable polymer layer such as the aforementioned polymers.
• At least a portion of the particles 20 is formed by capsules having a core 22 fluid (see Figure 1) and a gelled outer shell 24.
• the capsules are advantageously capsules as described in the patent application WO2010 / 063937 of the Applicant.
• each capsule is spherical in shape and advantageously has an outside diameter greater than 500 microns and advantageously submillimetric.
• the diameter of the capsules is generally less than 8 mm and in particular between 1 mm and 5 mm.
• the core 22 contains at least one fluid advantageously chosen from a biologically active product, a cosmetic product, or an edible product that can be consumed, as described above.
• the viscosity of the core 22 is in particular less than 50000 mPa.s and preferably less than 30000 mPa.s.
• the core 22 is based on a predominantly aqueous phase or on the contrary a predominantly oily phase.
• the gelled envelope 24 of the capsules advantageously comprises a gel containing water and at least one polyelectrolyte reactive with multivalent ions.
• the envelope 24 further contains a surfactant resulting from its manufacturing process.
• polyelectrolyte reactive with polyvalent ions means a polyelectrolyte capable of passing from a liquid state in an aqueous solution to a gelled state under the effect of contact with a gelling solution containing multivalent ions such as ions of an alkaline earth metal chosen for example from calcium ions, barium ions, magnesium ions.
• the individual polyelectrolyte chains are substantially free to flow relative to one another.
• An aqueous solution of 2% by weight of polyelectrolyte then exhibits a purely viscous behavior at the shear gradients characteristic of the forming process.
• the viscosity of this solution is between 50 mPa.s and 20000 mPa.s, advantageously between 3000 mPa.s and 15000 mPa.s, measured by the method previously described.
• the individual polyelectrolyte chains in the liquid state advantageously have a molar mass greater than 65000 g / mol.
• the individual polyelectrolyte chains together with the multivalent ions form a coherent three-dimensional network which holds the core 40 and prevents its flow.
• the individual chains are held together and can not flow freely relative to each other.
• the viscosity of the formed gel is infinite.
• the gel has a threshold of stress to the flow. This stress threshold is greater than 0.05 Pa.
• the gel also has a modulus of elasticity that is non-zero and greater than 35 kPa.
• the three-dimensional gel of polyelectrolyte contained in the envelope 24 traps water and the surfactant when it is present.
• the mass content of the polyelectrolyte in the envelope 24 is for example between 0.5% and 5%.
• the polyelectrolyte is preferably a biocompatible polymer that is harmless to the human body. It is for example produced biologically.
• polysaccharides synthetic polyelectrolytes based on acrylates (sodium, lithium, potassium or ammonium polyacrylate, or polyacrylamide), synthetic polyelectrolytes based on sulfonates (poly (styrene sulfonate)). sodium, for example).
• the polyelectrolyte is selected from an alkaline earth alginate, such as sodium alginate or potassium alginate, gellan or pectin.
• Alginates are produced from brown algae called "laminar", referred to as "sea weed".
• Such alginates advantageously have a content of ⁇ -L-guluronate greater than about 50%, preferably greater than 55%, or even greater than 60%.
• the surfactant is preferably an anionic surfactant, a nonionic surfactant, a cationic surfactant or a mixture thereof.
• the molecular weight of the surfactant is between 1 50 g / mol and 10000 g / mol, advantageously between 250 g / mol and 1500 g / mol.
• the surfactant is an anionic surfactant
• it is for example chosen from an alkyl sulphate, an alkyl sulphonate, an alkyl aryl sulphonate, an alkaline alkyl phosphate, a dialkyl sulphosuccinate, an alkaline earth salt of saturated or unsaturated fatty acids.
• These surfactants advantageously have at least one hydrophobic hydrocarbon chain having a number of carbons greater than 5 or even 10 and at least one hydrophilic anionic group, such as a sulphate, a sulphonate or a carboxylate linked to one end of the hydrophobic chain.
• the surfactant is a cationic surfactant
• it is for example chosen from a salt of alkyipyridium or alkylammonium halide such as n-ethyldodecylammonium chloride or bromide, cetylammonium chloride or bromide (CTAB) .
• CTLAB cetylammonium chloride or bromide
• These surfactants advantageously have at least one hydrophobic hydrocarbon chain having a number of carbons greater than 5, or even 10, and at least one hydrophilic cationic group, such as a quaternary ammonium cation.
• the surfactant is a nonionic surfactant
• it is for example chosen from polyoxyethylenated and / or polyoxypropylenated derivatives of fatty alcohols, fatty acids, or alkylphenols, arylphenols, or from alkyls glucosides, polysorbates, cocamides .
• the mass content of surfactant in the envelope 24 is greater than 0.001% and is advantageously greater than 0.1%.
• the envelope 24 consists exclusively of polyelectrolyte, optionally surfactant, and water.
• the sum of the mass contents of polyelectrolyte, surfactant, and water is then equal to 100%.
• each capsule is of the type described in FR FR 61404.
• Each capsule then comprises a core 22 which contains an intermediate drop of an intermediate phase placed in contact with the gelled envelope 24.
• the core 22 comprises at least one internal drop of an internal phase disposed in the intermediate drop.
• the particles are mono-dispersed.
• “monodisperse” is meant that they have a coefficient of variation C v in size less than 10%.
• the average diameter D of the particles is for example measured by analysis of a photograph of a batch consisting of N particles, by image processing software (Image J). Typically, according to this method, the diameter is measured in pixels, then reported in ⁇ , depending on the size of the container containing the particles.
• the value of N is chosen greater than or equal to 30, so that this analysis reflects in a statistically significant manner the particle size distribution of said emulsion.
• the diameter D is measured ; of each particle, then we obtain the average diameter
• the coefficient of variation of the particle diameters of the population according to this mode of the invention is less than 10%, preferably less than 5%.
• the continuous medium 18 is formed by a solution gelled for example by an aqueous gel, in particular alone or in combination, a gel of hyaluronic acid, xanthan, polysaccharides, cellulose, guar gum or else of oligogéline.
• the viscosity of the continuous medium 18 is greater than 1000 mPa.s, especially between 3000 mPa.s and 10 000 mPa.s.
• the gel is thus sufficiently viscous to allow the suspension of the particles 20. It is, however, little rheofluidifier to allow its aspiration through the device 10, while being sufficiently rheofluidifier to drive the particles 20 with him during its distribution.
• the device 10 comprises a container 30 containing the heterogeneous mixture 14, and a delivery element 32 according to the invention, mounted in the container 30 to form the fluid composition 12 from the heterogeneous mixture 14 .
• the device 10 further comprises a dispensing member 34 of the fluid composition 12 outside the device 10, connected to the delivery element 32.
• the container 30 is formed by a tubular container 36 having a neck 38 on which the dispenser member 34 is mounted.
• the container 30 delimits a hollow interior volume 40 accommodating the mixture 14 and the delivery element 32.
• the hollow interior volume 40 is for example between 0.01 dm 3 and 0.2 dm 3 , especially between 0.015 dm 3 and 0.1 dm 3 .
• the delivery element 32 comprises a fluid guide duct 42, and a tangential filtration member 44, disposed in the guide duct 42 to form the fluid composition 12.
• the guide duct 42 extends through the interior volume 40, advantageously up to the neck 38. Its height is generally greater than 90%, especially greater than 95%, of the height of the container 30.
• the guide duct 42 comprises a hollow tubular body 46 and a fastener 48 on the container 30.
• the fixing member 48 is configured to allow the guide duct 42 to rest on the neck 38 of the container 30 and to have direct and sealed connection with the dispensing member 34.
• the conduit 42 delimits a central passage 50 defining an axis AA 'of fluid circulation through the conduit 42.
• the conduit 42 further delimits an upstream opening 52 for taking up heterogeneous mixture 14 and a downstream opening 54 for delivering a fluid composition 12, through which opens the central passage 50.
• the hollow tubular body 46 is for example formed from a plastic material, preferably flexible.
• the fastener 48 comprises a flange mounted to bear on the neck 38 of the container 30.
• the central passage 50 has a substantially constant section. It extends linearly along the axis A-A ', vertically in Figures 1 and 2. Its transverse extent is greater than the average diameter of the particles 20, especially greater than 2.5 times the average diameter .
• the filtering member 44 comprises at least one perforated filter wall 56 delimiting filtration openings 58, forming a non-zero angle and advantageously greater than 10 ° with a perpendicular to the axis AA 'of circulation.
• the perforated filter wall 56 is conical. It thus forms an angle greater than 30 °, advantageously greater than 45 ° with the perpendicular to the axis A-A 'of circulation.
• the perforated filter wall 56 comprising a plurality of openings 58 is further inclined with respect to the axis A-A 'of circulation, to ensure a tangential filtration.
• the perforated filter wall 56 projects downstream into the central passage 50. It has a base 60 of section greater than or equal to that of the downstream opening 54 to surround the downstream opening 54 and a free end 62 disposed in the passage 50.
• the filtration member 44 is arranged in the guide duct 42 so that all the heterogeneous mixture 14 introduced into the central passage 50 through the upstream opening 52 passes through the perforated wall 56 and its openings 58, before to reach the downstream opening 54. This allows the formation of the fluid composition 12 and the retention on the perforated wall 56 residues resulting from this formation.
• the filter member 44 is cylindrical in shape of axis A-A '.
• the filter wall 56 thus comprises at least one section parallel to the axis A-A ', suitable for tangential filtration.
• the length of the filter member 44 is greater than 50% of the length of the central passage 50.
• the filter openings 58 are distributed along the axis A-A '.
• the transverse dimensions of the openings 58 are chosen to ensure effective retention of the residues produced during the disintegration of the particles 20, while avoiding clogging phenomena and ensuring an adequate suction velocity beyond the pressures exerted by the organ distribution 34.
• the transverse dimension of the openings 58 is smaller than the average diameter of the particles 20, and is advantageously less than one third of the average diameter of the particles 20.
• the dispensing member 34 is for example formed by a pump 80 capable of causing aspiration of the heterogeneous medium 14 into the delivery element 32, then passing this medium 14 through the filtration member 44 to form the composition 12, and finally to convey the composition 12 to a dispensing orifice 82 located on the member 34 towards the outside of the device 10.
• the pump is for example of the ball type, valve, diaphragm, or even piston.
• the dispensing member 34 is connected to the delivery element 32.
• the downstream opening 54 opens into the dispenser member 34, advantageously into a distribution channel 84 connecting the downstream opening 54 to the dispensing orifice 82.
• the device 10 is provided.
• the container 30 contains the heterogeneous mixture 14 comprising the particles 20 dispersed in the medium 18.
• the dispensing member 34 is inactive.
• the delivery element 32 dips into the mixture 14.
• the upstream opening 52 opens into the mixture 14.
• the dispensing member 34 then generates an aspiration which propagates through the internal volume 50 of the delivery element 32.
• the mixture 14 is then pumped through the upstream opening 52 and back into the hollow tubular body 46 of the guide duct 42 to the filtration member 44.
• the particles 20 when the particles 20 are rigid, they block against the wall 56 in the intermediate space delimited between the perforated wall 56 and the body 46 of the duct 42. Only the homogeneous medium 18 liquid passes through the openings 58 of filtration. The homogeneous medium 18 thus forms the fluid composition 12 which rises through the downstream opening 54, the distribution channel 84. This composition is extracted through the dispensing orifice 82 out of the device 10, for example in the form of a jet or a spray.
• the particles 20 disintegrate in contact with the perforated wall 56. Their contents pass through the openings 58 and form, by mixing with the medium 18, the fluid composition 12. The solid residue resulting from the disintegration of the particles 20 is blocked by the perforated wall 56.
• the delivery element 32 according to the invention thus very effectively filters a heterogeneous mixture 14 to form a fluid composition 12 to be distributed in a standard dispensing member 34 and low cost.
• FIGS. 3 to 6 A second device 10 according to the invention is illustrated in FIGS. 3 to 6.
• the guide duct 42 of the delivery element 32 defines an upstream restriction 1 12, extending between upstream opening 52 and the filter member 44, and a downstream section 1 14 of transverse extent greater than the transverse extent of the upstream restriction 1 12.
• the upstream restriction 1 12 has a constant inner cross section.
• the transverse extent of the restriction 112 is between one and two times the mean diameter of the particles 20.
• the upstream restriction 1 12 furthermore includes an internal radial projection 116 intended to break up the particles 20 in order to homogenize the heterogeneous medium 14.
• the internal radial projection 1 16 is preferably annular. It projects from the wall of the conduit 42 defining the restriction 1 12. It defines a central lumen 1 18 through which the medium 14 passes, with a transverse extension smaller than the average diameter of the particles 20 (see FIG. 6).
• the height of the restriction 1 12 is less than the height of the downstream section 1 14, taken along the axis A-A '. This height is advantageously less than 50% of the height of the downstream section 1 14, especially less than 20% of the height of the downstream section 1 14.
• the downstream section 1 14 receives the filter member 44.
• the free end 62 of the perforated wall 56 is located at an axial distance from the restriction 1 12 along the axis A-A '.
• the minimum transverse extent of the downstream section 1 14 is greater than 1.5, in particular greater than 2.5 times the average diameter of the particles 20. It is thus greater than 200%, in particular 300% of the minimum transverse extent of the restriction. 1 12.
• downstream section 1 14 has a substantially constant inner cross section.
• the operation of the second device according to the invention 1 10 differs from the operation of the first device 10 according to the invention in that the passage of the particles 20 in the restriction 1 12 aligns the particles 20 to advantageously place them in single file, which facilitates their aspiration. Then, the projection 1 16 present in the restriction 1 12 produces their disintegration.
• the envelope 24 of the particles 20 breaks in the restriction 1 12 to the passage of the projection 1 16, releasing the heart 22.
• the core 22 thus mixes with the medium 18 to form the fluid composition 12 which passes through the filtration member 44.
• the envelope 24 forms a semi-solid residue 120 which is retained by the filtration wall 56 without passing through the openings 58.
• the delivery element 32 is therefore effective both for forming the fluid composition 12 by releasing the core 22 in the restriction 1 12 and for very effectively retaining the remaining residue 120 of the envelope 24.
• the residue 120 of the envelopes 24 is held little by little in the upper part of the filtering member 44. It thus accumulates without completely clogging the filtering member 44, until all the contents of the dispensing device 1 10 is used.
• the particles 20 disintegrate during the passage in the restriction 1 12, in contact with the projection 1 16, and at least a portion of the particles 20 disintegrate in contact with the filter member 44.
• the particles 20 partially disintegrate during the passage in the restriction 1 12, in contact with the projection 1 16, and end to disintegrate in contact with the filter member 44.
• a fluid composition 14 homogeneous, without any debris is thus delivered through the dispensing orifice 82, without producing debris unfavorable to the feel of use to the touch of the composition delivered, for example on the skin of a user, or produce debris that can block the dispenser member
• the volume of the upstream portion of the central passage 50 situated upstream of the filtration member 44 in the central passage 50 is greater, and is in particular greater than 1.5 times the maximum volume of the residues 120 intended to be recovered during of the disintegration of the particles in suspension.
• the maximum volume of the residues 120 is for example estimated by the sum of all the volumes of the envelopes 24 of the particles 20 contained in the heterogeneous mixture 14, received within the container 30.
• the free volume in the skin filter thus makes it possible to store all the semi-solid residues resulting from the disintegration and filtration of the heterogeneous starting mixture.
• the term “disaggregate” preferably means that the particles are torn, exploded, opened, and / or broken, thereby losing their integrity and releasing where appropriate their contents, as opposed to breaking a clump. of particles to obtain free particles maintaining their integrity.
• the volume delimited by the central passage and the filtering member 56 is greater than 1.5 the maximum volume occupied by all the residues 120 contained in the container 30.
• each filter opening 58 is smaller than the minimum area of each residue 120.
• the filtration openings 58 are advantageously of elongate shape, with the smallest dimension, here the width, less than a quarter of the diameter of the particles 20.
• the openings have a large surface, which allows a good return of the product to be delivered, but are also thin enough to prevent residues 120 to pass through the filter, even if they fold on themselves.
• the total area of the filtration openings 58 is greater than 0.2% and especially less than 10% of the total surface of the residues 120 contained in the container 30.
• the term "surface” applied to a residue 120 means the maximum surface area of all the surfaces measured over all the projections of this residue 120 on a plane, advantageously on the filter wall 56 of the filtering member 44.
• the free end 62 of the perforated filter wall 56 is axially spaced from the upstream opening 52.

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• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cosmetics (AREA)
• Manufacturing Of Micro-Capsules (AREA)
• Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
• Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
• Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)

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• 2012
  • 2012-08-16 FR FR1257833A patent/FR2994536B1/fr active Active
• 2013
  • 2013-08-14 CN CN201380043966.7A patent/CN104582861B/zh active Active
  • 2013-08-14 WO PCT/EP2013/067025 patent/WO2014027039A1/fr active Application Filing
  • 2013-08-14 EP EP13753595.1A patent/EP2885085B1/de active Active
  • 2013-08-14 US US14/420,118 patent/US9446425B2/en active Active
  • 2013-08-14 BR BR112015003291A patent/BR112015003291A2/pt not_active IP Right Cessation
• 2015
  • 2015-08-12 FR FR1557694A patent/FR3035804B1/fr active Active

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