MXPA02005565A

MXPA02005565A - Device for storing and/or applying a product with fibers with absorbent or soluble particles.

Info

Publication number: MXPA02005565A
Application number: MXPA02005565A
Authority: MX
Inventors: Gueret Jean-Louis
Original assignee: Oreal
Priority date: 2001-06-05
Filing date: 2002-06-05
Publication date: 2004-07-16
Also published as: CN1246197C; CA2389556C; CA2389556A1; US20020182409A1; CN1389379A; JP2006271983A; EP1264562A1; JP2003125846A; BR0202112A; FR2825246B1; FR2825246A1

Abstract

A product-application device consists of fibers (11) provided with filler particles (30). The particles are capable of absorbing liquid having a weight greater than or equal to a weight of particles and/or solution of compound in liquid, and/or capable of dissolving in liquid. The particles lack cotton. Independent claims are included for: (a) a method of manufacturing an application device by co-extruding a fiber containing plastic material and particles, and placing the fiber and a liquid in contact with one another; and (b) a fiber for application device, comprising synthetic material and filler particles associated with the synthetic material.

Description

DEVICE OF CONDITIONING AND / OR APPLICATION THAT COMPRISES FIBERS THAT PRESENT PARTICLES CAPABLE OF ABSORBING LIQUID OR A COMPOSITE IN SOLUTION IN THIS LIQUID OR DISSOLVE IN LIQUID Field of the Invention The present invention relates to the application of a product, in particular a cosmetic product or treatments, on the skin or faors. By cosmetic product is meant a product as defined in Council Directive 93/35 / EEC of June 14, 1993. Background of the Invention The present invention relates in particular to the figures used for the application of a product or product. as a load on a product. There is a need to have fibers, in particular brush, brush or flock hairs, capable of being loaded with a relatively large amount of product in order, for example, to increase the autonomy of an applicator. There is also a need to have mascara brush hairs capable of engaging the eyelashes, for example for smoothing the product on its surface or bending them. REF .: 139783 There is also the need to improve the conservation of a cosmetic product or treatments. There is also a need to create new conditions for the application of a cosmetic product or treatments by means of fibers and, if necessary, new makeup effects. There is finally a need to retard the desiccation of a cosmetic or treatment product deposited on an applicator, in particular when it is not rapidly re-introduced into its container or must be preserved in a moist environment under a watertight cover. EP-A-1 099 394 describes applicators comprising hairs loaded with particles that form rough edges in all or part of their surface. Description of the invention The invention provides in particular to respond to all or part of the aforementioned needs. It comes to this thanks to a device for the conditioning and / or the application of a cosmetic product or treatments, characterized in that it comprises fibers having particles capable of absorbing a liquid or a compound in solution in this liquid or dissolving in a liquid. The particles may lack clay, silica and cotton. By "fiber", in the sense of the present invention, any generally elongated body, intended for example to constitute a mask brush hair, a flocking coating hair, a brush hair, in particular a brush Nail varnish or brush for the application of a powder, or also to constitute a load introduced into a product to be applied to the eyelashes, for example to lengthen them.The fibers can be relatively flexible, even elastically deformable, and be made in A synthetic material The aforementioned liquid can be a cosmetically acceptable liquid, for example water or an oil or an aqueous, alcoholic or oily solution that can be applied on the human body, this list not being limiting. product to be applied At least one of the fibers can have a substantially constant cross section, for example being or extrusion or coextrusion of one or more thermoplastic materials and / or elastomers. The fiber can be made by co-extrusion of two synthetic materials, one of them being for example loaded with the aforementioned particles. The latter may be present on at least the surface of at least one part of the fibers, on their surface only or be dispersed within the plastic material. In a particular embodiment, the particles are apt to increase in volume upon contact with the product to be applied, being for example capable of swelling in contact with a solvent contained in the product to be applied, this solvent being for example water. This increase in volume can be used to create surface irregularities on the surface of the fiber, capable of forming product retention zones, which is advantageous when the fibers serve for application and are wetted in a container containing a reservoir of cosmetic product or treatments. The use of particles capable of absorbing liquid, possibly swelling in contact with it, or of dissolving in contact with the liquid can allow to create on the fiber privileged anchoring areas of the cosmetic product or treatments to be applied, in particular by affinity of the particles with respect to the hydrophilic or lipophilic compounds contained in the product. Thus, the product can be hooked even more to the fiber and the applicator is likely to carry a larger quantity. The presence of particles suitable for absorbing liquid and possibly swelling in contact with the latter may also be useful for delaying the drying of the cosmetic product or treatments present on the surface of the fiber, since as the evaporation of a solvent takes place contained in the cosmetic product or treatments, for example water, the particles that have absorbed this liquid can relax it in the product present around the fiber. Delaying the desiccation of the product present on the surface of an applicator is advantageous, since it allows not only to increase the autonomy of the applicator but also to delay its drying when it is not submerged in the product in the absence of use, but simply protected by a protective cover for example. The particles can be, for example, in dry crystallized form and be able to soften in contact with a liquid, in particular a liquid contained in the product to be applied. This can make the figure more flexible after absorption of the liquid, for example water. By choosing the nature of the particles and the amount introduced, fibers with the desired flexibility can be manufactured. The particles can absorb, for example, at least their weight in liquid, this being for example water. As a material that can be used to make particles suitable for increasing the volume in contact with the product to be applied, in particular in contact with water, mention may be made, but this list is not limiting: hydrophilizing or lipo-inking polymers, cross-linked polyacrylates superabsorbents with a high percentage of swelling in water, polyvinyl alcohol, carboxyvinyl polymers, semisynthetic derivatives of cellulose, starches, biogomas, biosaccharides, scleroglucans, casein, phytocolloids such as alginates, gelatin, the gelanes, the xanthan, the laponite, the silicas, in particular the colloidal silica, or mixtures thereof. Superabsorbent materials can be used which absorb at least twice, ten times, fifty times or even more than hundreds of times their weight of liquid, for example water, such as polyacrylates. The particles, before swelling, can have a granulometry comprised for example between 0.1 and 300 μP ?, or between 5 and 200 μP ?, or between 10 and 150 μp ?.

The granulometry of these particles will be chosen according to the desired roughness after inflation. The mass proportion of the particles may be between 0 and 20%, preferably less than or equal to 6%, dry, with respect to the total weight of the fiber, before inflation. To make the fibers, the material used can be chosen so that it can swell in contact with a product to be applied, for example to the point of having a relative volume increase of 15%. It can be used as plastic material to make at least one of the fibers, a plastic material chosen from the following: polyamides, PET, acetates, PE, PP, PVC, amide block polyester, plasticized Rilsan®, elastomers, in particular elastomers of polyester, PE elastomers, silicone elastomers, nitrile elastomers or a mixture of these materials. In a particular embodiment, at least one of the fibers comprises particles suitable for dissolving in contact with a liquid, for example water. The particles can be water-soluble or fat-soluble. The dissolution of these particles causes the appearance of a roughness on the surface of the fiber and, if necessary, even the porous fiber. The initial granulometry of these particles can be between 0.1 and 300 μp ?. At least one of the fibers may contain particles capable of absorbing a liquid such as water, with or without inflation. The use of the particles can be advantageous because it allows one or several compounds to be pumped into the fiber, for example to give the latter biocidal, in particular bactericidal, properties. In particular, the fiber may contain particles suitable for absorbing preservatives in solution in a liquid, in particular in aqueous solution. The proportion of the particles capable of absorbing a liquid or a compound in solution in a liquid can be in a mass proportion included, before putting the fiber in contact with this liquid, between 0 and 20%, even between 0 and 6% , with respect to the total weight of the fiber. The fiber can have very different cross sections, for example a shape chosen from the following: of revolution or not, in a circle, in a solid or hollow square, in a disk with a groove, possibly in a solid or hollow triangle, in a solid or hollow star , in U, in V, in I, in T, in Z, in -, in +, reniform, with three branches, solid, hollow, or a combination of these forms. The fiber may be twisted. The conditioning and application device using fibers according to the invention may or may not comprise a draining member. The fibers according to the invention can belong to an applicator able to be loaded with product, as explained above. This applicator can be a mask brush and at least one of the brush hairs be a fiber according to the invention. As explained above, the presence of particles capable of absorbing liquid and / or swelling in contact with a liquid or dissolving in a liquid can allow to confer to the bristles of the brush a certain roughness or porosity that favors the hooking of the liquid. mask and delay its drying. The particles, in particular when they are film-forming, can also deposit on the surface of the eyelashes a film which, for example, makes it possible to improve the behavior of the eyelashes or their appearance or to favor the sliding of the applicator. The applicator can also, in a variant, be constituted by a brush and at least one of the bristles of the brush be constituted by one of the fibers.

The conditioning and / or application device may comprise a flocking coating of which at least one of the hairs is constituted by one of the fibers. The flocking coating can at least partially coat one of the chosen elements among the following: the teeth of a comb, the hairs of a brush, a squeegee, a foam, a sponge, a perforated film or not, a terminal, rigid or flexible, in particular an elastomer terminal, a fabric or a non-woven. The diameter of the fibers may for example be between 0.5 and 500 μP ?, even 50 and 500 μp? according to the use made thereof, and its length can be comprised for example between 0.5 and 50 mm, for example. The fibers can also constitute a charge in a cosmetic product or treatments, in particular a mask, in which case the fibers contribute to the lengthening of the eyelashes. The fact of incorporating particles capable of absorbing a liquid and / or swelling in contact with the latter in the fibers can then contribute to improving the behavior of the fibers on the eyelashes, for example. It may also be advantageous to introduce magnetized or magnetizable particles into the fibers.

The magnetized or magnetizable particles can be introduced into the same fibers which already contain particles capable of absorbing a liquid or of swelling in contact with a liquid or dissolving in a liquid or in a variant, the conditioning and / or application device can comprising fibers containing only magnetic particles and other fibers containing particles capable of absorbing a liquid, of swelling in contact with a liquid or dissolving in a liquid. The magnetic particles can be particles coated with a resin, for example cyanoacrylate, or can be made by deposition of a magnetic substance on a non-magnetic support, for example a glass or wooden fiber microbead. The fact that the fibers have magnetic properties can make it easier to extract the product, improve the application on the treated surface or create new makeup effects if necessary. The magnetic properties can also favor the penetration of active substances favoring microcirculation. The fibers can be fixed or mobile. Another object of the invention is a method for manufacturing a fiber suitable for use in a conditioning and / or application device as defined above, characterized in that it comprises the following steps: - extruding or coextruding a fiber of plastic material comprising particles capable of absorbing a liquid or a compound in solution in this liquid or dissolving in a liquid, - carrying the fiber in contact with the liquid. In a particular embodiment of this method, fibers suitable for swelling in contact with the liquid are used, and their granulometry is chosen so as to confer on the fiber, after swelling of the particles, a previously defined roughness. Always in a particular embodiment, when the particles are capable of absorbing a preservative in solution in a liquid, the fibers are put in contact with this liquid so that the fibers are loaded with preservative. The liquid in question can be used for the cooling of the fibers at the exit of the extruder. In another embodiment, a fiber of plastic material comprising particles capable of dissolving in a liquid, in particular water, is extruded or co-extruded, and the particles can be dissolved at least partially so as to form surface roughnesses of fiber. The subject of the invention is also a fiber which can be used as a brush, brush or flock hair in a conditioning and / or application device for a cosmetic product or treatments, characterized in that it also comprises, in addition to a synthetic material, particles capable of absorbing At least the weight of a liquid or a compound in solution in this liquid capable of dissolving in a liquid. The invention also relates to a porous or rough fiber, obtained in particular by the above process.

Other characteristics and advantages of the present invention will be highlighted from the reading of the detailed description that follows, of non-limiting examples of realization, and with the examination of the attached plan (which forms an integral part of the description), in which: - the figures 1A and IB are schematic axial sections that represent a fiber incorporating particles capable of swelling in the presence of a liquid, Figures 2A and 2B are schematic axial sections of a fiber comprising soluble particles in a liquid, - Figure 3 illustrates the formation of a gel on the surface of the fiber, - Figure 4 represents an embodiment in which the particles are present only on the surface of the fiber, - Figures 5A to 7 are respectively analogous to Figures 1A to 3, which represent fibers that also comprise magnetic particles, figures 8A to 8C are schematic views, in cross section, of examples of different distribution of the magnetic particles within the fibers, Figures 9A to 9Q are schematic cross sections illustrating various possible sections for the fibers, - Figure 10 illustrates the manufacture of the fibers by extrusion, - figure 11 illustrates the magnetization of the fibers after extrusion, - figures 12 to 26 represent various examples of conditioning and / or application devices, - figure 27 illustrates the orientation of the hairs of a flocking made with magnetizable fibers under the effect of magnetic field lines generated by a magnet, - Figures 28A and 28B illustrate the deflection of the hairs of a brush under the effect of magnetic interactions, - Figures 29A and 29B illustrate the deviation of the hairs of a brush under the effect of magnetic interactions, - Figure 30 represents an applicator comprising an element of a application housed under a protective cover in the absence of use, Figure 31 depicts a coated magnetic particle, and Figure 32 depicts a magnetic particle formed by deposition of a magnetic substance on a non-magnetic body. In all the figures, the relative proportions of the different elements have not always been respected, in order to make the drawing clearer. FIGS. 1A to 9Q show fibers according to the invention which can be used in a conditioning and / or application device as shown in one of FIGS. 12 to 26, for example.

These fibers are made, in the described example, by extrusion of a thermoplastic material 11 containing a charge of particles capable of absorbing a liquid or a compound in solution in this liquid or dissolving in a liquid, and eventually a charge of particles presenting magnetic properties. FIG. 1A shows a fiber comprising a particle charge 30 of a hydrophilic compound before contacting the fiber with a liquid, for example water, and in FIG. IB the same figure after contact with this liquid. In the illustrated example, the fiber is solid and has a circular cross section, but may have other sections, as will be explained later. The fiber can be made, for example, by means of an installation shown in FIG. 10, which comprises an extruder 20 and a bath 21 of a cooling liquid in which the fibers are immersed at their exit from the extruder. The swelling of the particles 30 makes it possible to produce a relief on the surface of the fiber, the relief being useful in particular to allow the fiber to be loaded with a larger amount of product or to further hook the lashes in the case where the fiber is used like mask brush hair, for example. The particles 30 may also be useful for absorbing one or more substances within the fiber, for example preservatives or cosmetic or dermatological actives. In particular, one or several compounds solubilized in the bath liquid, for example preservatives, can be introduced into the bath 21 used to cool the fibers at the exit of the extruder, these compounds being absorbed by the particles when the fibers are submerged in the bath 21. Thus, the figures coming out of the bath 21 are loaded with the compounds that have been pumped by the particles 30 contained in the fibers. These compounds can then be progressively relieved in contact with a cosmetic product or treatments, in order to improve their preservation, for example. The fibers can be dehydrated at the exit of the bath 21.

The fibers may also contain, optionally in addition to the particles 30, particles soluble in a liquid, for example the water in the bath 21 used to cool the fibers as they leave the extruder. These particles 40 may be constituted for example by a salt, or a sugar soluble in the liquid used, even gelatin when the liquid is water. A fiber containing the particles 40 is shown in FIG. 2A, before dissolution, ie, for example, just at the exit of the extruder 20 and in FIG. 2B the same fiber after passing through the bath 21. It is observed that the soluble particles 40 that were present on the surface of the fiber have been dissolved by the liquid in the bath 21, creating a roughness on the surface of the fiber, even making the fiber porous. The roughness or porosity can be used to increase the load of the product fiber, for example. The roughness or porosity obtained will depend on the initial granulometry of the particles 40. The particles 40 can also be dissolved only partially at the outlet of the bath 21, so that they continue to dissolve in contact with the cosmetic product or treatments present on its surface . The particles 40 may be constituted by one or more substances having a cosmetic or dermatological effect. In this case, the dissolution of the particles 40 in contact with the product can be accompanied by the release of these substances on the treated surface. The fibers can if necessary be exposed to shocks that can cause or facilitate the exit of the particles 40 present on the surface.

The particles 40 may also be made of a material that is not soluble in the water of the bath 21 but is only soluble, progressively, in the cosmetic or treatment product present in contact with the fibers. Particles can also be introduced into the fiber 50 capable of gelling in contact with a liquid, so as to form a layer of gel 51 on the surface of the fiber, as illustrated in Figure 3. The gel layer 51 can modify for example the affinity of the fiber with the cosmetic product or treatments in its contact. The gel can also be arranged on the treated surface, for example the eyelashes, to improve its behavior, its appearance or the sliding of the applicator in its contact. The use of particles capable of absorbing a liquid, in particular water, can also have the advantage of delaying the drying of a cosmetic composition or treatments on the surface of the fiber, when the liquid absorbed by the particles is susceptible to being progressively relieved to compensate for the evaporation of a solvent contained in the composition. The use of the particles 30, 40 or 50 can also make it possible to create on the surface of the fiber privileged anchoring zones for the product, for example thanks to the affinity of the particles used with respect to the hydrophilic or lipophilic compounds contained therein. product. The latter may optionally be an oil / water emulsion and the fibers absorb only the oil or water, and more generally absorb a component of the product selectively. The particles 30, 40 or 50 can, if necessary, be present on the surface only of the fibers, as illustrated in FIG. 4. The initial granulometry of the particles 30, 40 or 50 is for example between 1 and 300 μa, or between 5 and 200 μp ?, even still between 10 and 150 μ a. The proportion of the particles 30, 40 or 50 is, for example, between 0 and 20% by mass, even between 0 and 6% by mass, dry. The fibers may also comprise magnetic particles 12 dispersed in a substantially homogeneous manner within the plastic material 11. The magnetic particles 12 can also be deposited only on the surface of the fibers, by an appropriate method, for example coating, as described in FIG. illustrated in Figure 8A or confined within the fiber, as illustrated in Figure 8B. The magnetic particles can also be replaced by a central core 14, as illustrated in Figure 8C. The mass ratio of magnetic particles can be, for example, between 0.2 and 30%. A material chosen from the following list may be used as magnetic materials: soft magnetic materials, hard magnetic materials, ferrites, in particular based on zinc, nickel or manganese, rare earths, barium sulfate, silicon iron alloys, cobalt iron, possibly loaded with molybdenum, or a mixture of these materials. The magnetic particles 12 can be made by fragmenting a magnetic substance or by depositing a magnetic substance M on a non-magnetic body, for example a microbead or a wood fiber as illustrated in FIG. 31. The magnetic particles can also be comprising a magnetic core M and a magnetic outer layer R, for example a layer of resin, in particular of cyanoacrylate, as illustrated in FIG. 32. FIGS. 5A and 5B depict a fiber that differs from that of FIGS. 1A and IB for the presence in its core of magnetic particles 12. Figures 6A and 6B correspond to a fiber that differs from that of Figures 2A and 2B by the presence of magnetic particles 12. Figure 7 represents the fiber of Figure 3 with magnetic particles 12 dispersed in its mass. The fibers can be given very different cross sections, other than the solid circular, as will now be described with reference to Figures 9A to 9Q. The fibers can be extruded with a flat cross-section, as shown in Figure 9A, cross-shaped as depicted in Figure 9B, star-shaped with three branches, as shown in Figure 9C. The fibers can have a hollow section, as shown in FIG. 9D or solid with a capillary slot, as illustrated in FIG. 9E. The fibers can also have a U-shaped cross-section, as shown in FIG. 9F, a cross section in I as shown in FIG. 9H, in T as shown in FIG. 91, in V as shown in FIG. illustrated in Figure 9J, in Z as illustrated in Figure 9K or a combination of the cited forms such as for example the combination shown in Figure 9G of the shapes corresponding to Figures 9B and 9C. FIG. 9L shows a fiber with a square and hollow section, in FIG. 9M a fiber with a square and solid section, in FIG. 9N a fiber with a star section and a hollow section, in FIG. 90 a fiber with a triangular section and hollow, in figure 9P a section fiber forming grooves in its periphery and in figure 9Q a fiber having a reniform section. When the fibers comprise magnetic particles, the fibers can be exposed to a magnetizing magnetic field at the outlet of the bath 21, by means of a magnetization device 60, as illustrated in FIG. 11, so as to, for example, be magnetized with a previously defined polarity. The magnetization of the fibers, if necessary, can also take place after incorporation of these fibers into a conditioning and / or application device, by subjecting this device or a batch of these devices to a magnetization field. The fact of magnetising the fibers once they are in position in the conditioning and / or application device can make it easier to manufacture, limiting the risks of fiber agglomeration. The fibers can be used in various applicators and conditioning devices, as will be described below. FIG. 12 shows a packaging and application device 100, comprising a container 101 for containing a product P to be applied, such as a mask and an applicator 102. The container 101 is provided with a wiper member 106 that can , in a variant not represented, be flocked. The applicator 102 comprises a rod 103, provided at one end of a gripping member 104 that also constitutes a closing cap of the container 101 and at the other end of a brush 105. The latter comprises a core constituted by a twisted metallic wire, in the turns from which are detached hairs constituted by fibers that have just been described, which comprise or not magnetic particles. In the case where the fibers comprise magnetic particles, the magnetic poles of the brush can be oriented, for example, on the axis of the rod 103 or perpendicular to the axis of the rod 103. The twisted core can be made of a magnetic material such as a stainless steel non-magnetic or in a variant, in a material that has magnetic properties. The soul can thus interact magnetically with the hairs. The bristles of the brush 105 can be magnetized, so that the magnetization of a hair of the brush exerts an action on the adjacent hairs, the magnetic interactions between the hairs being able to serve, for example, to give the hairs some desired orientations. According to the orientation of the magnetic poles of the brush, the effect on the orientation of the hairs will be different. By way of example, the effect of lateral deviation of the bristles of the brush in the case of transverse magnetic field is illustrated in FIGS. 28A and 28B. The magnetization of the hairs can also be used only to exercise, when the application of the product on the eyelashes takes place a magnetic field that has a beneficial action on these or on a part of the face, for example the eyelids. The magnetic field exerted by brush hairs is likely to evolve over time, in particular when the brush configuration is modified, for example when the removal of the applicator takes place or when the application takes place. The product P can have magnetic properties, for example containing magnetizable or magnetized particles. In the case that the product P has magnetic properties, the fact of having brush hairs that also have magnetic properties can allow to promote the loading of the brush with product, for example by attracting the product by the bristles of the brush. The product can also contain fibers or sequins that have magnetic properties and allow the applicator to interact magnetically with these sequins, for example to take them to a particular orientation at the time of application, for example to favor the sliding of the applicator. FIG. 13 shows a device 110 for conditioning and applying a nail varnish, comprising a container 111 and an applicator 112 comprising a rod 113 provided at one end of a gripping element 114 which also constitutes a cap closing the container and at the other end of a brush 115 comprising a bundle of relatively grouped hairs. The latter are made from fibers according to the invention that have or not magnetic properties, which can be used if necessary to bring the bristles of the brush 115 to a previously defined orientation, in order to facilitate the loading of the brush 115 with product or exert an action on the treated surface. If necessary, the magnetic interactions between the bristles of the brush, depending on the polarity of the magnetic field of each hair, can help to group the hairs or, on the contrary, separate them. By way of example, a separation effect of the hairs due to magnetic interactions between the hairs has been illustrated very schematically in FIGS. 29A and 29B. The product P may or may not have magnetic properties. FIG. 14 shows a conditioning and application device 120 comprising a container 121 containing a product P, for example a red liquid lip, and an applicator 122 comprising a rod 123 provided at one end of a cap. 124 closure of the container 121, which also serves as a gripping organ, and at the other end of an application terminal 124, covered by a flocking made with fibers according to the invention with or without magnetic properties. The device 120 also has a wringer made up of a foam block 125. This foam block can have magnetic properties or not. In particular, it is possible to impart a certain magnetization to the foam block 125 by incorporating magnetized particles therein. The magnetization of the squeegee can serve, for example, to magnetize the flocking of the terminal 124 during the removal of the applicator 122. A conditioning and application device 130 of a product P, in particular a lipstick, is shown in FIG. liquid, comprising a terminal 131 covered by a flock 132 made with fibers according to the invention having magnetic properties or not. Figure 16 shows a brush 140, intended for the application of a powder, the hairs of which are made with fibers according to the invention, which have magnetic properties or not. In figure 17, an applicator 150 is represented comprising a foam 151 covered on its surface by a flock 152 constituted by fibers according to the invention, which have magnetic properties or not. For example, the applicator can be used to apply a "blush" on the skin, shown in FIG. 18A, a liquid lip red applicator 160 comprising a flocked elastomer terminal 161 and in FIG. 18B an eye liner 160 '. which also comprises a flocked elastomer terminal 161 'In both cases, the flocking hairs are constituted by fibers according to the invention, which have magnetic properties or not. The fibers according to the invention can also be used to perform a flocking of a small tassel 170, as illustrated in FIG. 19 or of a make-up sponge 180, shown in FIG. 20. The flocking coating can also be spread over a film 191 fixed on a block of foam 192, as is the case in the applicator 190 shown in FIG. 21. Fibers according to the invention, which have magnetic properties or not, can also be used in a disk 200 or a wipe comprising at least one layer 201 of a nonwoven or of a fabric that incorporates the fibers, as illustrated in Figure 22. A comb 210 is shown in Figure 23 for the application of a product on the eyelashes, which it includes frushed teeth 211. The flocking hairs are made of fibers according to the invention, which have magnetic properties or not. The applicator may comprise one or more monobloc magnets in addition to fibers having magnetic properties. By way of example, an applicator 220 comprising a handle 221 on which a magnet 222 is fixed is depicted in FIG. 24. The latter is covered by a block of foam 223, itself externally coated by a flock 224 constituted by fibers that have magnetic properties. The presence of the magnet 222 allows the hair of the flock 224 to be subjected to a magnetic field. In particular, the flocking hairs that are bonded substantially perpendicular to the underlying support can be oriented along the lines of this magnetic field M, as illustrated in Figure 27. The hairs tend to rise on the surface of the application element or to take other hairs. orientations according to the position with respect to the magnet 222, which allows for example to load with more product the applicator or to make the application smoother. Furthermore, when the product is a powder put in contact with the applicator and the latter has magnetic properties, the dust particles tend to deposit on the applicator, in particular on the fibers, and are reduced if the risk of blowing up the powder and the sneezing effect. A device 230 is shown in FIG. 25 in which the product is contained in a flexible bag 231 topped by a pump 232. The applicator comprises a foam 234, coated on its surface by a flock 235 and integral with a cover 236. A magnet 237 housed in the foam 234 is supported by a lid 236. The flocking hairs 235 are made with fibers according to the invention that have magnetic properties, and are subjected to the magnetic field of the magnet 237, in the case of the previous embodiment.

Partially represented in FIG. 30 is an applicator 280 comprising a flocked terminal 282 housed under a cover 281 in the absence of use. The use of fibers containing hydroabsorbents or hydro-inks allows to maintain a humid environment under the cover, delaying the desiccation of the terminal, which could be replaced by other application elements, for example a brush or a brush. Of course, the invention is not limited to the embodiments that have just been given. It is possible in particular to provide, between the applicator and the product contained in the container, a screen 240 as illustrated in FIG. 26. In this case, the product P may contain magnetic particles 241 and the applicator have magnetic properties, for example because it is constituted by a flocked terminal whose flock coating is constituted by fibers according to the invention magnetized. The terminal 242 is capable of attracting the magnetic particles 241 contained in the product. By choosing the size of the meshes of the screen 240, it is possible to act so that these magnetic particles 241 attracted by the terminal 242 do not pass through the screen 240 but move the product P towards the terminal 242, which makes it possible to improve the load of the terminal 242 with product. In a variant, the product P in turn is magnetic, comprising for example coated magnetic particles, and can pass through the meshes of the screen 240. The figures can be magnetized over a part of their length only. The conditioning and application devices that have just been described can comprise fibers having magnetic properties mixed with fibers that do not have magnetic properties, charged with particles of a liquid absorbing compound and / or apt to swell in contact with a liquid , or capable of dissolving in contact with a liquid, this liquid being for example water. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims

CLAIMS Having described the invention as above, the content of the following claims is claimed as property: 1. Device for packaging and / or applying a cosmetic product or treatments, characterized in that it comprises fibers comprising particles (30; 40; 50) capable of: - absorbing at least its weight of a liquid or a compound in solution in this liquid, or - dissolving in a liquid. Device according to claim 1, characterized in that the fibers are made of a synthetic material. 3. Device according to claim 1, characterized in that at least one of the fibers has a substantially constant cross section. Device according to one of the two preceding claims, characterized in that at least one of the fibers is made by extrusion or co-extrusion of one or more thermoplastic and / or elastomeric materials. Device according to any one of the preceding claims, characterized in that the particles are present at least on the surface of at least one part of the fibers. Device according to any one of the preceding claims, characterized in that for at least part of the fibers, the particles are present only on the surface of the fibers. Device according to any one of the preceding claims, characterized in that for at least one of the fibers, the particles are dispersed within the plastic material. Device according to any of the preceding claims, characterized in that the particles are suitable for increasing volume in contact with the product to be applied. 9. Device according to the preceding claim, characterized in that for at least one of the fibers, the particles are made in at least one of the materials chosen in the following list: hydro-foaming or lipo-swelling polymers, the cross-linked superabsorbent polyacrylates with a high percentage of swollen in the water; polyvinyl alcohol, carboxyvinyl polymers, semi-synthetic cellulose derivatives, starches, biogomas, biosaccharides, scleroglucans, casein, phytocolloids such as alginates, gelatin, gelano, xanthan, laponite , silicas, in particular colloidal silica, or mixtures of these. Device according to claim 9, characterized in that the particles are made of a superabsorbent material. Device according to claim 10, characterized in that the particles are made of a material capable of absorbing at least twice their weight of water. 12. Device according to any of the four immediately preceding claims, characterized in that for at least one of the fibers, the particles, before swelling, have a granulometry comprised between 0.1 and 300 μp ?. Device according to any of the five immediately preceding claims, characterized in that for at least one of the fibers, the mass proportion of the particles, before inflation, is comprised between 0 and 6%, with respect to the total weight of the fiber . Device according to any one of the preceding claims, characterized in that the material of at least one of the fibers is apt to swell in contact with the product to be applied. Device according to any one of the preceding claims, characterized in that at least one of the fibers comprises particles capable of dissolving in contact with a liquid, in particular water. Device according to the preceding claim, characterized in that the particles are water-soluble or liposoluble. Device according to claim 15 or 16, characterized in that for at least one of the fibers, the mass proportion of the particles suitable for dissolution, before dissolution, is between 0 and 20%, with respect to the total weight of the fiber. 18. Device according to any of claims 15 to 17, characterized in that the initial particle size of the particles capable of dissolving is between 0.1 and 300 μp ?. Device according to any one of the preceding claims, characterized in that at least one of the fibers comprises particles capable of forming a gel on the surface of the fiber. Device according to any one of the preceding claims, characterized in that it comprises at least one fiber containing particles capable of absorbing a liquid, in particular water. Device according to claim 20, characterized in that it comprises at least one fiber containing particles capable of absorbing preservatives in solution in a liquid. Device according to one of claims 20 or 21, characterized in that the particles suitable for absorbing a liquid or a compound in solution in this liquid are comprised in a music ratio, before the fiber comes into contact with this liquid, included between 0 and 6%, with respect to the total weight of the fiber. Device according to any of the preceding claims, characterized in that at least one of the fibers is made of a plastic material chosen from the following: polyamides, PET, acetates, PE, PP, PVC, amide block polyester, plasticized Rilsan®, elastomers, in particular polyester elastomers, PE elastomers, silicone elastomers, nitrile elastomers or a mixture of these materials. Device according to any one of the preceding claims, characterized in that the cross section of at least one of the fibers has a shape chosen from the following: of revolution or not, in a circle, in a solid or hollow square, in a disk, with a slot possibly, in solid or hollow triangle, in solid or hollow star, in U, in V, in I, in T, in Z, in -, in +, reniform, with three branches, hollow, or a combination of these forms, being able the fiber to be twisted eventually. 25. Device according to any of the preceding claims, characterized in that it comprises a draining member. 26. Device according to any of the preceding claims, characterized in that at least one of the fibers belongs to an applicator capable of being loaded with product. Device according to claim 26, characterized in that the applicator is a mask brush and that at least one of the bristles of the brush is constituted by one of the fibers. 28. Device according to claim 26, characterized in that the applicator is constituted by a brush and that at least one of the bristles of the brush is constituted by one of the fibers. Device according to any one of the preceding claims, characterized in that it comprises a flocking coating of which at least one of the hairs is constituted by one of the fibers. 30. Device according to claim 29, characterized in that the flocking coating covers at least partially one of the elements among the following: the teeth of a comb, the hairs of a brush, a wringer, a foam, a sponge, a film perforated or not, a rigid or flexible terminal, in particular an elastomer terminal, a fabric, a non-woven. Device according to any one of the preceding claims, characterized in that at least one of the fibers has a diameter comprised between 0.5 and 500 μp ?. Device according to any one of the preceding claims, characterized in that at least one of the fibers has a length between 0.5 and 50 mm. 33. Device according to any of the preceding claims, characterized in that it comprises fibers comprising at least one magnetized or magnetizable body. 34. Device according to any of the preceding claims, characterized in that at least one of the fibers comprises between 0.2 and 30% by weight of magnetized or magnetizable particles. 35. Process for manufacturing a fiber used in a conditioning and / or application device as defined in any of claims 1 to 34, characterized in that it comprises the following steps: - extruding or coextruding a fiber of plastic material comprising particles able to absorb a liquid or a compound in solution in this liquid or dissolve in a liquid, - bring the fiber in contact with the liquid. 36. Method according to the preceding claim, characterized in that the particles swell in contact with the liquid, and because their granulometry is chosen so as to confer on the fiber, after swelling of the particles, a previously defined roughness. 37. Method according to one of the two preceding claims, characterized in that the particles are able to absorb a preservative in solution in the liquid because the fibers are put in contact with this liquid. 38. Method according to one of claims 35 to 37, characterized in that the liquid serves for cooling the fibers at the outlet of the extruder. 39. Method according to one of claims 35 to 37, characterized in that the liquid is a cosmetic or treatment product. 40. Method according to claim 35, characterized in that a fiber of plastic material comprising particles capable of dissolving in a liquid, in particular water, is extruded or co-extruded, and because the particles are dissolved at least partially so as to form some roughness on the surface of the fiber. 41. Fiber that can be used as brush, brush or flock hair in a conditioning and / or application device for a cosmetic product or treatments, characterized in that it comprises, in addition to a synthetic material, particles capable of absorbing a liquid or a compound in solution in this liquid or dissolve in a liquid.