• 专利附录
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    • 专利摘要:
    The method comprises the following steps: (a) forming a planar layer (19) of powder comprising at least one cosmetic powder; (b) applying a powder binding activator and bonding the powder in at least a first region of the powder layer (19); (c) forming an additional planar layer (19) of powder comprising at least one cosmetic powder, the additional layer (19) at least partially covering the layer (19) above; (d) applying a powder binding activator and bonding the powder in at least a second region of the additional powder layer (19); (e) repeating steps (c) through (d) until formation of the three-dimensional object. The cosmetic composition included in the three-dimensional object or constituting the three-dimensional object is restorable after formation of the three-dimensional object.
    公开号:FR3024656A1
    申请号:FR1457613
    申请日:2014-08-05
    公开日:2016-02-12
    发明作者:Clement Jaunet；Gonzalez Sonia Lorente
    申请人:LOreal SA；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a process for the production of a three-dimensional object comprising or constituting a cosmetic composition. . The cosmetic composition contains at least one cosmetic product, in particular a makeup product, a care product, a washing product or a perfume, the cosmetic product being intended to be applied to a body surface of a user. More generally, "cosmetic product" is understood in particular for the purposes of the present invention, a product as defined in Regulation (EC) No. 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products. The three-dimensional object thus advantageously forms a make-up powder, in particular an eyeshadow, a complexion, a tan, or a blush, in the form of a compacted powder, a hybrid powder or a wet powder. Alternatively, the three-dimensional object forms a deodorant and / or antiperspirant product, a soap, a solid shampoo and / or a solid perfume. To manufacture a three-dimensional object comprising a cosmetic composition, it is known to use forming processes such as molding, filling, compacting, multi-compaction, injection of a wet powder, extrusion etc.
    [0002] Such manufacturing processes impose constraints on manufactured objects. In molding, objects generally have a draft limit, with as much undercut as possible when molded, even in a flexible mold. Molding processes also limit the complexity of the shapes, since it is impossible to make one piece in another, or to nest a piece in another. In all the aforementioned methods, the height of the product is a limiting factor. Complex shapes, especially three-dimensional are very difficult, if not impossible to achieve, and often very expensive. The compacting, multicompacting and slurry injection processes are also limited in terms of the height of the finished product.
    [0003] There are also limits in the coloration of the cosmetic composition, in particular in the number of colors that can be used, and in the control of the various colors in the cast mass. In particular, it is tedious to produce objects having distinct colors and / or color gradients, and / or graphic inscriptions, for example alphanumeric characters, and / or juxtapositions of colors.
    [0004] The abovementioned methods are also limited in the use of different precursor materials to constitute the cosmetic composition. It is for example tedious to create via the same process an object consisting of cosmetic products of different natures and compositions.
    [0005] Another difficulty results from the fact that the methods of the aforementioned type are intended solely for shaping the three-dimensional object. In some cases, it is necessary to prepare upstream of shaping at least one leg, commonly called "bulk", which complicates the manufacture in some cases.
    [0006] Moreover, when new objects incorporating cosmetic compositions are developed, it is generally useful to make functional models for determining the feasibility and possible interest of the object. These models are complex to make, and require many steps including the development of the formula, the manufacture of the tab, the realization of a specific tooling, and product conditioning or shaping tests. These tests must sometimes be performed several times before obtaining a satisfactory result, which increases the time and cost of development. An object of the invention is to provide a simple and versatile method for manufacturing three-dimensional objects comprising a cosmetic composition, the objects being able to have complex shapes, natures, and appearances. To this end, the subject of the invention is a process of the aforementioned type, comprising the following steps: (a) forming a plane powder layer comprising at least one cosmetic powder; (B) applying a powder binding activator and bonding the powder in at least a first region of the powder layer; (c) forming an additional planar layer of powder comprising at least one cosmetic powder, the additional layer at least partially covering the layer (19) above; (D) applying a powder binding activator and bonding the powder in at least a second region of the additional powder layer; (e) repetition of steps (c) to (d) until formation of the three-dimensional object, the cosmetic composition included in the three-dimensional object or constituting the three-dimensional object being restorable after formation of the three-dimensional object.
    [0007] The process according to the invention may comprise one or more of the following characteristics, taken singly or in any technically possible combination: the thickness of each layer before binding of the powder is less than 1 mm, in particular less than at 500 microns; the cosmetic powder contains fillers, pigments, dyes, polymers and / or fibers. the pigments are chosen from organic pigments, mineral pigments and nacres, and mixtures thereof. The cosmetic composition comprises at least 40% by weight of powder. a first binding activator provided in the application step has a first color, a second binding activator supplied to the application step having a second color, the formed cosmetic composition comprising the first binding activator and the second binding activator on the same layer or on different layers. it comprises the provision of a plurality of binding activators having distinct basic colors, the method comprising a step of forming at least one pixel of a layer having a predefined color by mixing a plurality of binding activators. different basic colors; It comprises a step of depositing at least one ink from a print cartridge on at least one layer of powder formed in step (a) or in step (d). the activator for binding the powder comprises an at least partially liquid binder, the binder being activatable by simple contact with the powder, by cooling, and / or by solvent evaporation. The binder is transparent or colored; the binder comprises at least one linking agent chosen from oils, especially silicone oils, and esters. the binder comprises at least one additional agent chosen from water, an alcohol, a polymer, a ceramic or inorganic precursor. The cosmetic composition obtained after forming the three-dimensional object is a make-up powder, a hybrid powder, or a wet powder, a deodorant and / or antiperspirant powder product, a solid shampoo or a soap powder. the method comprises, after formation of the three-dimensional object, a step of cleaning the three-dimensional object to remove the powder not bound to the three-dimensional object. An irreversible binding activator of the powder is added to at least a third region of a powder layer to form part of a support of the cosmetic composition. The method comprises the following steps: defining a predetermined shape and / or color of a three-dimensional object; determining the dimensions and the local composition of the regions of each powder layer on which a powder binding activator is to be applied, based on the predetermined shape. It comprises a preliminary step of determining the characteristics of a color of an element using a color analysis device, the determination of the local composition of at least one region of a color layer, powder on which a powder binding activator is to be applied being made on the basis of the color characteristics determined with the aid of the color analysis device. The three-dimensional object defines a hollow region comprising an unbound powder delimited by a wall formed of cosmetic powder bonded by at least one binding activator. The invention also relates to an additive manufacturing apparatus of a three-dimensional object comprising or constituting a cosmetic composition, the cosmetic composition comprising at least one cosmetic powder and at least one binder, the apparatus comprising: a support surface ; a set of formation of successive planar layers of powder on the support surface, the formation assembly comprising a powder reservoir containing at least one cosmetic powder; a set of local application of at least one link activator; a set of relative displacement of the local application assembly with respect to the support surface; A control unit capable of controlling the displacement assembly, the application assembly and the training assembly for performing the following steps: (a) forming a plane powder layer comprising at least one powder cosmetic; (b) applying a powder binding activator and bonding the powder in at least a first region of the powder layer; (C) forming an additional planar layer of powder comprising at least one cosmetic powder, the additional layer at least partially covering the previous layer; (d) applying a powder binding activator and bonding the powder in at least a second region of the additional powder layer; (e) repetition of steps (c) to (d) until formation of the three-dimensional object, the cosmetic composition included in the three-dimensional object or constituting the three-dimensional object being restorable after formation of the three-dimensional object. The invention also relates to a three-dimensional object comprising or constituting a cosmetic composition, wherein the cosmetic composition comprises at least one cosmetic powder and at least one binder, the cosmetic composition being formed of a plurality of layers deposited on one another. the others, the cosmetic composition being restorable.
    [0008] The invention will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which: FIG. 1 is a diagrammatic view of an example of a apparatus for the manufacture of a three-dimensional object comprising a cosmetic composition by a method according to the invention; FIGS. 2 to 4 illustrate examples of three-dimensional objects produced by a method according to the invention. The present invention relates to a method for manufacturing three-dimensional objects comprising a cosmetic composition 12 or consisting of a cosmetic composition 12, examples of which are illustrated in FIGS. 2 to 4, using a device The process according to the invention is intended to manufacture three-dimensional objects 10 made up of cosmetic composition 12, as illustrated for example in FIG. 2, which can be produced by deposition of binder on powder, an example of which is illustrated in FIG. 30 to be supplied directly to the user or to be inserted in a package 16 manufactured separately from the cosmetic composition 12 as illustrated in FIG. 4. In a variant, represented in FIG. 3, the method according to the invention is also intended to manufacture by additive deposition three-dimensional objects 10 comprising, in addition to the cosmetic composition 12, a support 18 carrying the composition 12, the support 18 being produced simultaneously by spraying binder on powder with the cosmetic composition 12.
    [0009] According to the invention, the cosmetic composition 12, and optionally the support 18, are formed of a plurality of successive layers 19 each comprising at least one powder and at least one local binder of the powder, the layers 19 being deposited on each other.
    [0010] In this example, the binder as such constitutes a powder binding activator. Alternatively, a portion of the binder is dispersed in powder form in the powder and is activated by an activator subsequently added to the powder and binder mixture. Advantageously, several separate binders are used to form the cosmetic composition, being deposited within the same layer or in separate layers. The distinct binders have, for example, distinct compositions to constitute, within the cosmetic composition 12, regions 20, 22 of different composition and / or appearance, for example in terms of chemical nature, mechanical properties and / or or colors, as illustrated for example in Figure 2 or 3, or gradients composition and color. In particular, the separate binders have distinct colors. These colors are in particular basic colors (for example black, yellow, cyan, magenta) for mixing a whole range of distinct colors.
    [0011] Alternatively, the binder (s) have a monochrome color, or an absence of color. The color of each point of the cosmetic composition is then provided by spraying droplets of an ink or a plurality of different color inks from one or more print cartridges. The thickness of each layer 19 forming the three-dimensional object 10 is, for example, less than 1 mm and is in particular between 50 microns and 200 microns. Each layer 19 comprises at least one solid zone formed of at least one powder and at least one binder of the powder. Optionally, each layer 19 has empty zones delimited by adjacent solid zones, depending on the desired shape of the three-dimensional object 10.
    [0012] At room temperature, for example at 25 ° C, the cosmetic corrective is structured. By "structured" is meant especially in the sense of the present invention that the cosmetic composition has a clean mechanical strength, that is to say that it keeps its shape spontaneously, throughout the life of the product in the absence of external solicitation. This lifetime is for example at least one day, and in particular at least one year.
    [0013] Thus, the cosmetic composition in the three-dimensional object formed at the end of the process according to the invention is not liquid at ambient temperature, and does not spontaneously flow visibly macroscopically throughout the life of the product. produced, in the absence of external solicitation. This lifetime is for example at least one day, including at least one year. Preferably, the cosmetic composition is solid. In this case, it can be entered and moved by the user without flowing. According to the invention, the cosmetic composition is releasable. For the purposes of the present invention, the term "releasable" is intended to mean that at least a part of the cosmetic composition is applicable to a body surface of the user and that the composition is capable of detaching itself at least partially from the body. three-dimensional object to stay on the body surface. Advantageously, the cosmetic composition is releasable by friction between the body surface and the cosmetic composition, without physical deterioration of the body surface. Alternatively, the cosmetic composition is releasable by friction between an applicator and the cosmetic composition. In a variant, the cosmetic composition can be reconstituted by soaking in a biologically compatible liquid to detach it at least partially from the three-dimensional object and apply it to the body surface.
    [0014] In a variant, the cosmetic composition can be restored by preheating the three-dimensional object to a biologically compatible temperature, for example less than 60 ° C. The cosmetic composition is preferably délitable, that is to say that a part of the powder, possibly carrying binder is likely to detach from the rest of the cosmetic composition under the effect of a mechanical action. Advantageously, the cosmetic composition is chosen from a colored cosmetic composition, and in particular a makeup composition for the skin and / or mucous membranes. The cosmetic composition is for example in the form of a makeup powder, a hybrid powder or a wet powder. Alternatively, the three-dimensional object forms a deodorant and / or antiperspirant product, a soap, a solid shampoo and / or a solid perfume. In particular, such a composition may be a foundation, a blush, a powder, a blush, an eye shadow, a concealer, a lipstick or a lip gloss, optionally having care properties or treatment.
    [0015] It may be a colored makeup composition (beige or green) intended to correct the color of the complexion. A composition according to the invention may also constitute a composition for makeup or care of nails or eyelashes.
    [0016] The powder present in the cosmetic composition advantageously has an average particle size of, for example, between 0.1 μm and 150 μm, preferably between 0.1 μm and 100 μm. Equipment for carrying out this measurement is the "Mastersizer 3000" of the company Malvern, as described in US 6,778,271 or GB2340932.
    [0017] This technique consists in measuring the intensity of the light scattered during the passage of a laser beam through a sample of dispersed particles. This data is then analyzed to calculate the size of the particles that created the diffraction pattern. It can be used for the liquid route and the dry route. The choice of the method depends on the powder to be analyzed. The skilled person uses the module that corresponds to the chosen method and performs the measurement. These grains may be spheroids or particles of irregular shape, have a size between 0.1 microns and 100 microns. The mass content of the cosmetic powder in the cosmetic composition, after formation of the three-dimensional object, is greater than 40%, especially greater than 85%, advantageously greater than 90%. In the case of a makeup powder, the mass content of cosmetic powder is greater than 80%, and is in particular between 85% and 95%. In the context of a hybrid powder, the mass content of cosmetic powder is advantageously between 60% and 90%. The powder comprises, for example, fillers, polymers, pigments, and / or fibers. For the purposes of the present invention, the term "filler" is intended to include particles of any form, colorless or white, mineral or synthetic, which are insoluble in the medium of the composition irrespective of the temperature at which the composition is manufactured. These fillers serve in particular to modify the rheology or the texture of the composition. The fillers may be inorganic or organic in any form, platelet-shaped, spherical or oblong, irrespective of the crystallographic form (for example sheet, cubic, hexagonal, orthorhombic, etc.). Mention may be made of talc, mica, silica, kaolin, polyamide, poly-6-alanine and polyethylene powders, tetrafluoroethylene polymer powders, lauroyl-lysine, starch and nitride. of boron, polymeric hollow microspheres such as polyvinylidene chloride / acrylonitrile copolymers of acrylic acid and silicone resin microbeads, elastomeric polyorganosiloxane particles, precipitated calcium carbonate, carbonate and hydrocarbon carbonate. magnesium, hydroxyapatite, hollow silica microspheres, microcapsules of glass or ceramic, metal soaps derived from organic carboxylic acids having from 8 to 22 carbon atoms, preferably from 12 to 18 carbon atoms, for example zinc, magnesium or lithium stearate, zinc laurate, magnesium myristate.
    [0018] It may also be particles comprising a copolymer, said copolymer comprising trimethylol hexyl lactone. In particular, it may be a hexamethylene diisocyanate / trimethylol hexyllactone copolymer. The powder may comprise generally spherical particles of at least one surface-stabilized polymer, especially in the form of nanoparticles of polymers.
    [0019] The nanoparticles are preferably between 5 nm and 600 nm in size. It is thus possible to use radical polymers, polycondensates or even polymers of natural origin. The polymer may be selected by those skilled in the art depending on its properties, depending on the subsequent application desired for the composition. Thus, the polymer may be film-forming or non-film-forming; in this second case, it may in particular be in the form of a crosslinked polymer. It is therefore possible to use film-forming polymers, preferably having a low glass transition temperature (Tg), less than or equal to the ambient temperature. It is also possible to use non-film-forming, optionally cross-linked, polymers which can be used as stably dispersed fillers in an oil. The polymers which can be used in the context of the present invention preferably have a molecular weight of the order of 2000 to 10,000,000, and a glass transition temperature of from -100 ° C. to 300 ° C. When the polymer has a Tg too high for the desired application, a plasticizer can be added to it to lower the Tg of the mixture used. The plasticizer may be chosen from plasticizers usually used in the field of application and in particular from compounds that may be solvents of the polymer. Among the non-crosslinked film-forming polymers that may be mentioned are homopolymers or radical copolymers, acrylic or vinyl, preferably having a Tg of less than or equal to 30 ° C. Among the non-film-forming polymers, mention may be made of 3024656 homopolymers or radical copolymers, vinylic or acrylic, optionally crosslinked, preferably having a Tg greater than or equal to 40 ° C, such as polymethyl methacrylate, polystyrene or polyacrylate. tert. The pigments are for example chosen from organic pigments, mineral pigments and pearlescent agents. By "nacres", it is necessary to include colored particles of any shape, iridescent or not, in particular produced by certain shellfish in their shell or else synthesized and which exhibit a color effect by optical interference. The nacres may be chosen from pearlescent pigments such as titanium mica coated with an iron oxide, titanium mica coated with bismuth oxychloride, titanium mica coated with chromium oxide, titanium mica coated with a organic dye and pearlescent pigments based on bismuth oxychloride. It may also be mica particles on the surface of which are superimposed at least two successive layers of metal oxides and / or organic dyestuffs. Mention may also be made, by way of example of nacres, of natural mica coated with titanium oxide, with iron oxide, with natural pigment or with bismuth oxychloride. The nacres may more particularly have a color or a yellow, pink, red, bronze, orange, brown, gold and / or coppery reflection.
    [0020] The fibers are for example selected from polyamide fibers such as nylon fibers. The binder mass content in the cosmetic composition is preferably between 5% and 60%. In the case of a make-up powder, this mass content is advantageously between 5% and 15%. In the context of a hybrid powder, the mass content of the binder in the cosmetic composition is advantageously between 10% and 40%. Advantageously, the binder is able to bind the powder by simple contact with the powder.
    [0021] The binder is then at least partially liquid at room temperature, for example at 25 ° C. By "at least partially liquid" is generally meant that the binder is able to flow under the effect of its own weight. In particular, the binder is able to flow through an extrusion nozzle or a print head.
    [0022] An extrusion nozzle is an elementary metering element, for example cylindrical. A printhead is an element of a printer responsible for projecting drops of ink. A print head has a multitude of nozzles. Generally, the projection of drops in a print head is caused by active means of displacement, such as a piezoelectric element. The binder "at least partially liquid" is completely liquid, or comprises a liquid phase in which are dispersed solid elements, which flow through the liquid phase. Advantageously, the binder is deposited in the form of liquid droplets which are projected from a nozzle or printhead onto a layer of binder-free powder. The viscosity of the binder, taken at its deposition temperature at the nozzle or print head is for example less than 5 mPa.s and in particular between 0.5 mPa.s and 3 mPa.s.
    [0023] In a variant, the binder is at least partially in hot liquid form. It is for example intended to be heated to be deposited in liquid form in a powder layer, then to solidify at least partially, after being deposited in a layer of powder. The term "hot" includes in particular beyond the melting temperature of the binder. For the purposes of the invention, the melting temperature corresponds to the temperature of the most endothermic peak observed in thermal analysis (DSC) as described in ISO 11357-3: 2011. In this embodiment, the binder at least partially liquid is able to solidify at least partially by cooling. By "at least partial solidification" is meant that the binder is able to be structured in the sense defined above. In particular, the viscosity of the binder is able to increase. In particular, the binder is able to become solid. Cooling advantageously passes the binder at a temperature lower than the temperature it exhibited during its deposition. This temperature is preferably lower than the melting temperature of the binder. The temperature loss of the binder during cooling is greater than 3 ° C., especially greater than 5 ° C. Alternatively, the binder is activatable by solvent evaporation.
    [0024] The binder comprises a main binding agent for providing a structure to the powder. It advantageously comprises a secondary binding agent in addition to the main agent. The main binding agent is preferably chosen from oils, especially silicone oils, or esters. It is thus possible to mention hydrocarbon oils such as liquid paraffin or petroleum jelly; mink oil, turtle oil, soybean oil, perhydrosqualene; almond oil, calophyllum, palm oil, grape seed oil, sesame oil, corn oil, rapeseed oil, sunflower oil, cotton, castor oil, avocado, jojoba, olive or cereal sprouts; esters of lanolic acid, oleic acid, (auric) acid, stearic acid, fatty esters, such as isopropyl myristate, isopropyl palmitate, butyl stearate, laurate, hexyl, diisopropyl adipate, isononyl isononate, 2-ethyl-hexyl palmitate, 2-hexyl-decyl laurate, 2-octyldecyl palmitate, myristate or 2-octyl lactate dodecyl, 2-diethylhexyl succinate, diisostearyl malate, glycerol or diglycerine triisostearate, higher fatty acids such as myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid, higher fatty alcohols such as cetanol, stearyl alcohol or oleic alcohol, linoleic or linolenic alcohol, isostearyl alcohol or octyl dodecanol, silicone oils such as PDMS, optionally phenylated such as phenyltrimethicones or optionally substituted with aliphatic and / or aromatic groups, optionally fluorinated, or with functional groups such as hydroxyl, thiol and / or amine groups; polysiloxanes modified with fatty acids, fatty alcohols or polyoxyalkylenes, fluorinated silicones, perfluorinated oils. It is also possible to use volatile oils, such as cyclotetradimethylsiloxane, cyclopentadimethylsiloxane, cyclohexadimethylsiloxane, methylhexyldimethylsiloxane or isoparaffins such as ISOPARs, in particular isododecane. The or each binder contained in the cosmetic composition forms a network for maintaining the composition, in particular the powder contained in the composition. This network breaks on the surface during the application of the cosmetic product, allowing the restitution of the composition. The additional agent is chosen from water, an alcohol, in particular methanol, ethanol, propanol, a polymer, especially a polyvinyl alcohol, or a polymer resin, a ceramic precursor, such as a polycarbisilazane or a mineral precursor, in particular based on silica.
    [0025] The manufacturing method according to the invention is implemented in a binder deposition manufacturing apparatus 50 on successive layers of powders, an example of which is illustrated schematically in FIG. 1. The apparatus 50 comprises a set 51 formation of successive layers of powder. The apparatus 50 comprises at least one nozzle or printhead 52 for dispensing at least one activator for binding the powder in liquid form, and for each binding activator dispensed by the nozzle or printhead 52, a reservoir 54 for conditioning the binding activator, and a set 56 for conveying the activator for connecting the reservoir 54 to the nozzle or printhead 52. For example, when a plurality of binding activators Separate colors are used, the apparatus 50 advantageously comprises a nozzle or printhead per color. The apparatus 50 has a support surface 58 adapted to carry the successive powder layers, and a relative displacement assembly 60 of the nozzle or printhead 52 relative to the support surface 58. The apparatus 50 also comprises a control unit 62 of the training assembly 51, the displacement assembly 60 and the conveyor assembly 56. It advantageously comprises a man-machine interface 64.
    [0026] The forming assembly 51 includes a powder reservoir 65, and a powder dispensing member 66 to the support surface 58 or to a previous powder layer 19. In the example illustrated in FIG. 1, the powder reservoir 65 is delimited downwards by a movable piston 67, able to move upwards in order to maintain the level of powder in the reservoir 65, after application of a layer 19. The powder dispensing member 66 here comprises a roller movably mounted in the reservoir 65, at the upper surface of the powder, for pushing a layer of powder laterally facing the support surface 58, directly on the this surface 58, or a previous powder layer 19 carried by the support surface 58. Each layer of powder 19 thus formed is thus flat. It is devoid of macroscopic relief of height greater than 4 times the average thickness of the layer 19. The average thickness of the powder layer 19 is less than 1 mm and is generally between 50 microns and 200 microns.
    [0027] In this example, the apparatus 50 includes at least one nozzle or printhead 52 dispensing a plurality of separate binding activators from a plurality of respective reservoirs 54. The nozzle or printhead 52 defines at least one dispensing orifice of the bonding activator. Advantageously, it is suitable for distributing the binding activator in the form of successive droplets which are projected towards the support surface 58 onto a layer of powder 19 that has just been deposited. Each droplet preferably has a mass less than 100 ng, for example between 30 ng and 100 ng. The distance separating the dispensing orifice from the powder layer 19 is preferably less than 5 mm, and is in particular between 0.5 mm and 1.5 mm. Thus, each droplet or set of droplets projected at a given position of the nozzle or print head 52 is able to define an area of the layer 19 forming a "pixel" on the powder layer 19. The composition and / or the The appearance of each pixel, especially its color, may thus be defined by the nature of the binding enhancer (s) added in the pixel. In the particular case where the binder is hot liquid, each tank 54 is advantageously provided with a heating system 68 adapted to maintain the binding activator in liquid form in the tank 154.
    [0028] The conveyor assembly 56 includes a connecting activator supply line 70, connecting the reservoir 54 to the nozzle or printhead 52, a system (not shown) for pumping the binding activator through the pipe 70, and advantageously, at least one control member 72 of the flow of the link activator flowing through the feed pipe 70, controlled by the unit 62.
    [0029] The controller 72 is for example a valve controlled between a blocking configuration of the binding activator flow and a distribution configuration of the binding activator. In a variant, the conveying assembly 56 is devoid of a control member 72, the flow of the cosmetic material being controlled by the pumping system. In the particular case where the binder is hot liquid, the pipe 70 and the nozzle or print head 52 are insulated to maintain the binding activator in liquid form during its conveying. In this example, the support surface 58 is defined on a vertically movable piston 73. After the formation of each layer 19, and the application of a bonding activator in at least one region of the layer 19, the piston 73 is adapted to move downward, to lower the layer 19 from be formed below the upper surface of the powder present in the tank. This allows the application of a new layer of powder free of binding activator to that coming from receiving the binding activator through the powder dispenser 66.
    [0030] The displacement assembly 60 is adapted to allow three-axis relative positioning of the nozzle or printhead 52 relative to the support surface 58, or with respect to the previous layer 19 deposited on the support surface 58. The displacement assembly 60 is driven by the unit 44 to horizontally move the nozzle or print head 52 relative to the previous layer 19 or 10 relative to the support surface 58, in order to selectively deposit at least one linker activator droplet at a predetermined location on the forming layer, corresponding to a pixel as defined above. The displacement assembly 60 is further controlled by the unit 62 to vertically maintain the vertical distance between the nozzle or printhead 52 and the support surface 58 or the previous layer. In this example, the displacement assembly 60 includes a mechanism 74 for three-dimensional displacement of the nozzle or printhead 52, and a mechanism 76 for vertically displacing the support surface 58. The control unit 62 is suitable for calculating, from a digital model 20 of the three-dimensional object, the spatial arrangement of the binding activator within each layer of powder 19, to deposit it with the aid of the or each nozzle or head of 52, and within each layer 19 to be formed, the exact composition of the binding activator in each zone of the layer 19. On this basis, the control unit 62 is able to control the relative displacement 25 corresponding to each nozzle or print head 52 relative to the support surface 58 for depositing a given binding activator on each zone to be formed of each layer 19, and controlling the control of the conveyor assembly 56, in particular of the system pumping and the orga 72, at each position of the nozzle or print head 52, depending on the desired activator in this area.
    [0031] The human-machine interface 64, when present, is capable of allowing a user to define the shape of the three-dimensional object to be produced, for example by choosing a digital mock-up file in a database of data. digital mockups, or by importing a predefined digital mock-up file, for operation by the control unit 62.
    [0032] An example of a manufacturing method according to the invention will now be described.
    [0033] Advantageously, the user initially defines using the man-machine interface 64 the shape and composition of the object to be produced, for example by choosing a digital mock-up file in a database of digital mock-ups. or by importing this file.
    [0034] Then, the digital mockup file is transmitted to the control unit 62. The control unit 62 then defines the shape of the various layers 19 intended to constitute the three-dimensional object, and within each layer the activator composition connecting each zone of the layer defining a "pixel". The control unit 62 then calculates the necessary displacement of the or each nozzle or print head 52 during the construction of each layer 19, and determines whether a link activator is to be added at a given nozzle position. or print head 52 is if any, which activator (s) must be added in each given position of the nozzle or printhead 52. Each binding activator is prepared in a reservoir 54. At least one Reservoir 54 then contains a binding activator comprising at least one binder. Then, the control unit 62 controls the training assembly 51, the displacement assembly 60 and the conveyor assembly 50 on the basis of the calculations made previously to successively form the different layers 19 on each other.
    [0035] For each layer 19 to be formed, the control unit 62 first drives the forming assembly 51 to deposit a layer of powder facing the previous layer 19 or the support surface 58, as the case may be. The powder layer is flat and free of binder. The control unit moves the nozzle or print head 52 in each zone 25 to be formed of the layer 19 and projects at least one binding activator, advantageously in the form of liquid droplets, against the powder layer 19 that has just been formed. filed. The droplets are projected directly onto the powder layer 19 or against the support surface 58.
    [0036] In this operation, the control unit 62 substantially maintains the vertical distance between the nozzle or printhead 52 and the previous layer 19 and / or the support surface 58. The binding activator binds the powder in the selected regions of the layer 19. In this example, the color of each pixel of the layer 19 is defined in particular by the color of the binding activator or the mixture of binding enhancers projected on this pixel.
    [0037] Once the layer 19 has been formed, the displacement assembly 60 is driven to separate the layer 19 previously formed from the nozzle or printhead 52. A new layer of powder is applied to the preceding layer by the powder distribution 66.
    [0038] The foregoing operations are repeated to add the different layers 19 to one another. Once all the layers 19 of the three-dimensional object have been formed, the unbound powder present in the areas lacking binding activator is removed from the three-dimensional object 10. The three-dimensional object 10 is thus cleaned.
    [0039] According to the invention, at least one binding activator is applied to selected areas of several layers 19, and in some cases all layers 19 are formed to additively build the structured cosmetic composition within the three-dimensional object 10. It is thus possible to construct three-dimensional objects comprising or consisting of a cosmetic composition having selected and complex shapes, compositions and appearances distinct according to the zone, appearance and composition gradients, by simple local control of the link activator to be added in each zone of a given layer 19 of the three-dimensional object 10. In a variant (not shown), the apparatus 50 comprises an additional printing head 20, suitable for projecting one or more inks contained in at least one print cartridge. The ink or inks are projected on each pixel, in addition to the link activator projected on this pixel. The color of each pixel is thus obtained by mixing the binding activator (s) projected on the pixel and by the inking (s) projected onto the pixel. The color of each pixel of each layer 19 of the cosmetic composition can therefore be predefined, and obtained precisely on the cosmetic composition manufactured by the process according to the invention. In particular, each region of the cosmetic composition can be fabricated with a color chosen by the user. For example, the apparatus 50 may comprise a color analysis device, in particular a spectrophotometer capable of determining data characteristic of a color chosen by the user, taken for example over a range of colors or on an accessory such as 'a garment. The spectrophotometer is for example of the type marketed by the company "X-Rite".
    [0040] The apparatus 50 is then adapted to use the data to construct a cosmetic composition having at least one color region similar to that determined by the color analysis device, either by using a mixture of suitable binding enhancers, or by using a mixture of inks contained in a print cartridge. In a variant, at least one bonding activator added in at least one layer 19 is intended to form a support 18 of the cosmetic composition that is part of the three-dimensional object 10. Advantageously, the support 18 thus formed is not restorable after solidification, unlike the cosmetic composition.
    [0041] Examples of activators for support 18 are binders containing a polymer soluble in alcohols, in water and / or in ketones, such as polyvinyl butyral (PVB), polyvinyl acetate (PVAC) or polyvinyl alcohol (PVAL). Alternatively, these binders are glues or thermosetting materials.
    [0042] The bonding activator for forming the carrier 18 is then projected from a specific nozzle or print head 52. In this variant, at least one partially liquid binding activator for forming the support is deposited during the formation of the three-dimensional object. On at least one layer of powder is added either exclusively a first binding activator for forming a region of the carrier, or a second binding activator for forming a region of the cosmetic composition and a first binding activator for forming a carrier. support region. In this case, the apparatus 50 includes at least one reservoir 54 for packing the support material and a set 56 for conveying the support material between the reservoir 54 and the nozzle or printhead 52. The control unit 62 is capable of determining whether the support material is to be added at a given position of the nozzle or printhead 52, in addition to or in replacement of a cosmetic material. In another variant, the cosmetic composition delimits at least one hollow central region containing free powder free of binding activator, encapsulated in a region of bonded powder. Advantageously, the manufacturing method according to the invention is implemented for producing prototypes of three-dimensional objects comprising or constituting a structured cosmetic composition.
    [0043] In a variant, the manufacturing method according to the invention is used to produce finished products in production, for example in a factory or in a shop. 5
    权利要求:
    Claims (16)
    [0001]
    CLAIMS1.- A method of additive manufacturing of a three-dimensional object (10) comprising or constituting a cosmetic composition, the cosmetic composition comprising at least one cosmetic powder and at least one binder, the process comprising the following steps: (a) formation of a a planar layer (19) of powder comprising at least one cosmetic powder; (b) applying a powder binding activator and bonding the powder in at least a first region of the powder layer (19); (c) forming an additional planar layer (19) of powder comprising at least one cosmetic powder, the additional layer (19) at least partially covering the layer (19) above; (d) applying a powder binding activator and bonding the powder in at least a second region of the additional powder layer (19); (e) repeating steps (c) to (d) until formation of the three-dimensional object (10), the cosmetic composition included in the three-dimensional object (10) or constituting the three-dimensional object (10) being releasable after formation of the three-dimensional object (10).
    [0002]
    2. - Method according to claim 1, wherein the cosmetic powder contains fillers, pigments, dyes, polymers and / or fibers.
    [0003]
    3. A process according to claim 2, wherein the pigments are chosen from organic pigments, inorganic pigments, pearlescent agents and mixtures thereof.
    [0004]
    4. - Process according to any one of the preceding claims, wherein the cosmetic composition comprises at least 40% by weight of powder.
    [0005]
    The method of any of the preceding claims, wherein a first link activator provided in the applying step has a first color, a second link activator provided in the applying step having a second color. the formed cosmetic composition comprising the first binding activator and the second binding activator on the same layer (19) or on different layers (19).
    [0006]
    6. - Method according to any one of the preceding claims, comprising a step of depositing at least one ink from a print cartridge on at least one powder layer (19) formed in step (a) or in step (d).
    [0007]
    7. - Process according to any one of the preceding claims, wherein the activator for binding the powder comprises an at least partially liquid binder, the binder being activatable by simple contact with the powder, by cooling, and / or by solvent evaporation.
    [0008]
    8. - Process according to claim 7, wherein the binder comprises at least one bonding agent selected from oils, especially silicone oils, and esters. 5
    [0009]
    9. - The method of claim 8, wherein the binder comprises at least one additional agent selected from water, an alcohol, a polymer, a ceramic precursor or mineral.
    [0010]
    10. A process according to any one of the preceding claims, wherein the cosmetic composition obtained after forming the three-dimensional object (10) is a make-up powder, a hybrid powder, or a wet powder, a deodorant product and / or or antiperspirant powder, a solid shampoo or soap powder.
    [0011]
    11. - Method according to any one of the preceding claims, comprising, after formation of the three-dimensional object (10), a step of cleaning the three-dimensional object (10) to remove the powder not bound to the three-dimensional object ( 10). 15
    [0012]
    The method of any of the preceding claims, wherein an irreversible binding enhancer of the powder is added to at least a third region of a powder layer (19) to form a portion of a carrier of the powder. cosmetic composition.
    [0013]
    13. A method according to any one of the preceding claims, comprising the steps of: - defining a predetermined shape and / or color of a three-dimensional object (10); determining the dimensions and local composition of the regions of each layer (19) of powder on which a powder binding activator is to be applied, based on the predetermined shape.
    [0014]
    14. - The method of claim 13, comprising a preliminary step of determining characteristics of a color of an element using a color analysis device, determining the local composition of at least one region of a layer (19) of powder on which a powder binding activator is to be applied being made on the basis of the color characteristics determined with the aid of the color analysis device.
    [0015]
    15. Apparatus (50) for the additive manufacturing of a three-dimensional object (10) comprising or constituting a cosmetic composition, the cosmetic composition comprising at least one cosmetic powder and at least one binder, the apparatus (50) comprising: a support surface (58); A forming assembly (51) of successive layers of powdered layers (19) on the support surface (58), the forming assembly (51) comprising a powder reservoir (65) containing at least one cosmetic powder ; a set of local application of at least one link activator; A relative displacement assembly (60) of the local application assembly with respect to the support surface (58); a control unit (62) capable of driving the movement assembly (60), the application assembly and the training assembly (51) to perform the following steps: (a) forming a flat layer (19) of powder comprising at least one cosmetic powder; (b) applying a powder binding activator and bonding the powder in at least a first region of the powder layer (19); (c) forming an additional planar layer (19) of powder comprising at least one cosmetic powder, the additional layer (19) at least partially covering the preceding layer (19); (d) applying a powder binding activator and bonding the powder in at least a second region of the additional powder layer (19); (e) repeating steps (c) to (d) until formation of the three-dimensional object (10), the cosmetic composition included in the three-dimensional object (10) or constituting the three-dimensional object (10) being releasable after formation of the three-dimensional object (10).
    [0016]
    16. A three-dimensional object (10) comprising or constituting a cosmetic composition, wherein the cosmetic composition comprises at least one cosmetic powder and at least one binder, the cosmetic composition being formed of a plurality of layers (19) deposited one on the others, the cosmetic composition being restorable. 30
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    同族专利:
    公开号 | 公开日
    FR3024656B1|2016-09-02|
    US20170232676A1|2017-08-17|
    EP3177452A1|2017-06-14|
    WO2016020454A1|2016-02-11|
    EP3177452B1|2020-07-15|
    ES2812751T3|2021-03-18|
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    US9867449B2|2014-06-20|2018-01-16|Richard Joseph LaHood, SR.|System and method of manufacturing a three-dimensional cosmetic product|FR3024657B1|2014-08-05|2016-09-02|Oreal|PROCESS FOR THE ADDITIVE MANUFACTURE OF A THREE DIMENSIONAL OBJECT COMPRISING OR CONSTITUTING A COSMETIC COMPOSITION BY APPLYING A PHOTOACTIVABLE MATERIAL TO A POWDER, AND ASSOCIATED APPARATUS|
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    CN109562561B|2016-09-07|2021-01-12|宝洁公司|Polymeric materials and articles made therefrom|
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    法律状态:
    2015-06-29| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-12| PLSC| Publication of the preliminary search report|Effective date: 20160212 |
    2016-07-12| PLFP| Fee payment|Year of fee payment: 3 |
    2017-07-14| PLFP| Fee payment|Year of fee payment: 4 |
    2018-07-12| PLFP| Fee payment|Year of fee payment: 5 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1457613A|FR3024656B1|2014-08-05|2014-08-05|PROCESS FOR THE ADDITIVE MANUFACTURE OF A THREE DIMENSIONAL OBJECT COMPRISING OR CONSTITUTING A COSMETIC COMPOSITION BY APPLYING A POWDER BINDING ACTIVATOR, APPARATUS AND ASSOCIATED OBJECTS|FR1457613A| FR3024656B1|2014-08-05|2014-08-05|PROCESS FOR THE ADDITIVE MANUFACTURE OF A THREE DIMENSIONAL OBJECT COMPRISING OR CONSTITUTING A COSMETIC COMPOSITION BY APPLYING A POWDER BINDING ACTIVATOR, APPARATUS AND ASSOCIATED OBJECTS|
    ES15752978T| ES2812751T3|2014-08-05|2015-08-05|Process for the additive manufacturing of a three-dimensional object that comprises or forms a cosmetic composition by applying a powder binding activator, associated object|
    EP15752978.5A| EP3177452B1|2014-08-05|2015-08-05|Method for the additive manufacture of a three-dimensional object comprising or forming a cosmetic composition by application of a powder binding activator, associated object|
    US15/501,498| US20170232676A1|2014-08-05|2015-08-05|Method for the additive manufacture of a three-dimensional object comprising or forming a cosmetic composition by application of a powder binding activator, associated apparatus and objects|
    PCT/EP2015/068094| WO2016020454A1|2014-08-05|2015-08-05|Method for the additive manufacture of a three-dimensional object comprising or forming a cosmetic composition by application of a powder binding activator, associated apparatus and objects|
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