Cosmetic applicator for applying fibers to human keratin materials

Abstract

Cosmetic applicator for applying fibers to human keratin materials Cosmetic applicator (1) for applying fibers (2) to human keratin materials, comprising a number n of fibers (2) carried by a support member (10) so as to be able to separate from the support member (10) during application, these n fibers (2) having a portion extending in front of the support member (10) before separation from the support member (10), these n fibers (2) comprising at least one group (8) of at most m fibers (2) connected together outside the support member (10), with m1. Figure for abstract: Fig. 1

Description

Title of the invention: Cosmetic applicator for applying fibers to human keratin materials Technical field

[0001] The present invention relates to a cosmetic applicator for applying fibers to human keratin materials, in particular to eyelashes, eyebrows, hair fibers, skin, eyelids, and scalp. The invention also relates to a method for applying fibers to an area of ​​human keratin materials. Prior art

[0002] Many people want to give their eyes more impact, and to do this, increase the number of eyelashes. Solutions exist such as false eyelash clips or small strands of false eyelashes. However, these solutions give an artificial appearance.

[0003] Another solution is to go to a specialized institute to have individual eyelashes glued. The operator applies a first eyelash, using tweezers and a first fiber at the end of which she places a droplet of fast-setting glue (usually ethylcyanoacrylate). She brings the fiber close to another eyelash, waits for the glue to set, then releases the tweezers. Applying a fiber takes about 1 minute. Thus, to apply 50 fibers to each fringe of eyelash, the operation lasts about 2 hours. The treatment is painful for the operator who must concentrate for 2 hours. It is also very expensive because of the time spent. Thus, this solution is not suitable for many people, who have neither the time nor the means to carry it out.

[0004] Furthermore, another problem may arise in the case of applying curved fibers. Indeed, when individual fibers are applied to the eyelashes, if these fibers are curved, they can turn on themselves and be stuck to the fringe of eyelashes without any alignment with the eyelashes. Even if the fibers are parallel to each other, they are not parallel to the natural eyelashes. The result obtained is unsightly.

[0005] There is a need for a rapid and inexpensive solution for laying fibers on human keratin materials which allows the fibers to be positioned substantially aligned with neighboring human keratin fibers. Disclosure of the invention Applicator

[0006] The present invention thus relates, according to one aspect, to a cosmetic applicator for applying fibers to human keratin materials, comprising a number n of fibers carried by a support member so as to be able to separate from the support member during application, these n fibers having a part extending in front of the support member before separation of the support member, these n fibers comprising at least one group of at most m fibers connected together outside the support member, with m<n et m> L.

[0007] Thanks to the invention, there is an applicator which makes it possible to group at least some of the fibers into groups of at least two fibers connected to each other. This makes it possible to prevent the fibers from turning on themselves during installation. The deposited fibers can thus be aligned with the natural fibers, for example the eyelashes.

[0008] The m fibers are preferably connected to each other at their ends.

[0009] At least two of the m fibers can be connected together by gluing, welding or fusion.

[0010] At least two of the m fibers can be formed by bending a single filament. In this case, it is sufficient to bend the filament to obtain a group of two fibers.

[0011] In at least one group, the fibers may be connected to each other by an element external to the fibers. This external element is then attached to the fibers of the group to connect them. It may be a U-shaped jumper to the branches of which the fibers of the group are attached.

[0012] The number m of fibers in at least one group, better in each group, is preferably exactly equal to two. In this case and in the case where the fibers are connected to each other at their end, the shape of each group of two fibers may have a V shape, the connection between the two fibers being punctual at the connected end of the fibers, or a U shape with a non-punctual connection at the connected end of the fibers.

[0013] At least some of the fibers may have a non-zero curvature. In particular, all of the fibers may have a non-zero curvature.

[0014] At least two fibers, in particular within the same group, may have different non-zero curvatures. Conversely, at least two fibers, in particular within the same group, may have similar non-zero curvatures.

[0015] At least a portion of the fibers may have zero curvature and be straight.

[0016] The bonded ends of two groups of fibers may cross.

[0017] The unbonded ends of at least two of the m fibers are advantageously kept at least 1 mm apart from each other on the support member. In this case, and when the fibers are connected to each other by an element external to the fibers, and they have similar non-zero curvatures, then they are substantially parallel to each other, the external element making it possible to separate the connected ends of the fibers by the same distance as the separation distance of the fibers at the unconnected ends thereof.

[0018] The support member can temporarily retain the fibers by a mechanical system comprising one or more parts which are movable relative to each other, the mechanical system being configured to move from a fiber retaining configuration to a fiber releasing configuration, the force to be exerted on these fibers to release them from the application member being greater in the retaining configuration than in the releasing configuration.

[0019] As a variant, the fiber support member comprises at least one channel into which a fiber is inserted, this channel being defined by at least one portion entirely surrounding the fiber in section and having at least one end-of-travel stop limiting the insertion of the fiber. Process

[0020] The invention also relates, according to another aspect, to a method for applying fibers to an area of ​​human keratin materials, using a cosmetic applicator as defined above, the method comprising the following steps: a. applying a first adhesive composition to at least part of the fibers and / or to said area, b. bringing at least one group of fibers carried by the support member into contact with said area, c. moving the support member away from said area so that the fibers adhere to said area.

[0021] Said zone is for example constituted by keratin fibers such as eyelashes, eyebrows, hairs, hair fibers, and / or by the eyelid, facial skin, scalp or skull.

[0022] The method may further comprise the step of applying a second adhesive composition to at least a portion of the fibers adhering to said zone.

[0023] All the steps of the method can be carried out by the user, which constitutes an advantage in terms of cost. Another advantage of the invention is based on the fact that the operation can be carried out by an expert because, despite the additional cost that this imposes, the long-term performance obtained (which can reach, for example, 15 days) makes it possible to keep the cost at a moderate level, in relation to the time that the performance lasts.

[0024] The method may comprise the step of drying the first adhesive composition after step a) of applying the first adhesive composition. In this case, the drying step may last between 30 s and 20 min, in particular between 1 min and 10 min, or even between 1 min and 5 min. Step b) may only be carried out after at least partial drying of the first adhesive composition.

[0025] The method may comprise the step of combing at least a portion of the fibers adhering to said area, where appropriate, during the setting of the second adhesive composition.

[0026] The method may comprise the step of depositing a makeup composition on the eyelashes and / or eyebrows of said area and the added fibers, in particular a mascara. This step advantageously takes place at the end of the process, after the fibers have been applied.

[0027] The method may include the step of bending all or part of the eyelashes and / or eyebrows of said area and the added fibers, in particular using a heating device. This step advantageously takes place at the end of the method, after laying the fibers, for example just after laying the second adhesive composition, if applicable.

[0028] In implementing the method according to the invention, the fibers, the first adhesive composition, the second adhesive composition and the applicator may be as defined below. Together

[0029] The present invention also relates, according to another of its aspects, to an assembly for implementing the method as defined above, comprising, in particular within the same packaging device, the first adhesive composition, the cosmetic applicator and optionally the second adhesive composition.

[0030] The set may also include at least one of the following accessories: a mascara applicator, an eyelash curler, an eyelash and / or eyebrow comb or any other eyelash or eyebrow care or makeup accessory.

[0031] The assembly can be contained in a single package sealed hermetically before use.

[0032] In the assembly according to the invention, the fibers, the first adhesive composition, the second adhesive composition and the applicator may be as defined below. Fibers

[0033] The term "fiber" must be understood according to the invention as meaning an object of length L and diameter D such that L is greater than D and preferably much greater than D, D being the diameter of the circle in which the largest cross-section of the fiber is inscribed. In particular, the ratio L / D (or aspect ratio) is chosen in the range of values ​​from 3.5 to 2500, preferably from 10 to 1000, better still from 20 to 500.

[0034] The fibers can be chosen from natural fibers and synthetic fibers, in particular polyamide, for example Nylon®.

[0035] The fibers may be mineral or organic. They may be long or short, individual or organized, for example braided, and hollow or solid. They may have any shape, for example curved or substantially rectilinear, preferably curved. They may in particular have a circular or polygonal (square, hexagonal or octagonal) cross-section. In particular, their unbound end may be blunt and / or smoothed to prevent injury.

[0036] The fibers may be those used in the manufacture of textiles, and in particular silk, cotton, wool, linen fibers, cellulose fibers, in particular extracted from wood, plants or algae, rayon fibers, polyamide (Nylon®), viscose fibers, acetate fibers, in particular rayon acetate fibers, acrylic polymer fibers, in particular polymethyl methacrylate fibers, or poly (2-hydroxyethyl methacrylate) fibers, polyolefin fibers and in particular polyethylene or polypropylene fibers, polyethylene terephthalate (PET) fibers, polybutylene terephthalate (PBT) fibers, glass fibers, silica fibers, carbon fibers, in particular carbon fibers in the form of graphite, polytetrafluoroethylene fibers (such as Teflon®), insoluble collagen fibers, polyester fibers,polyvinyl chloride fibers or polyvinylidene chloride fibers, poly(vinyl alcohol) fibers, polyacrylonitrile fibers, chitosan fibers, polyurethane fibers, polyethylene phthalate fibers, or fibers formed from a mixture of polymers such as those mentioned above, for example polyamide / polyester fibers.

[0037] The fibers may be human fibers.

[0038] In addition, the fibers may be surface treated and / or coated with a protective layer or a layer intended to give them a color.

[0039] Flame retardant acrylic fibers of the brand "Kanekalon" can be used.

[0040] The fibers are for example those sold under the reference Minke-props SKINTEX Flock ref. 590502.

[0041] It is possible to use identical fibers or alternatively a mixture of fibers that differ from each other in length, cross-section, material, shape and / or cross-section. The use of fibers of different lengths can provide greater naturalness. As can a mixture of colors. In a particular embodiment, the applicator may comprise a mixture of fibers of different colors. The colors of the fibers may be mixed in an organized manner or randomly. Different colors or color combinations in the fibers may be implemented without departing from the scope of the invention. Fibers producing special effects, such as transparent fibers and / or shiny fibers, may also be included. This can create new aesthetic effects on the eyelashes.

[0042] The fibers may have a length of between approximately 0.5 mm and 20 mm.

[0043] The fibers have, for example, a larger diameter of between 20 μm and 200 μm. pm, especially between about 50 and 200 pm. The diameter may or may not be constant along the fiber. The fibers may have a tapered shape.

[0044] The weight or count of the fiber yarn is generally given in deniers or decitex and represents the weight in grams per 9 km of yarn. The fibers have, for example, a unit count of between 0.1 and 100 deniers, preferably between 1 and 70 deniers and even better between 5 and 60 deniers. Applicator

[0045] The applicator is advantageously configured such that the support member temporarily retains the groups of fibers before they are laid. The support member is designed so that the fibers it carries adhere to the first adhesive composition when in contact with it and detach from the support member. Applicator comprising at least one channel

[0046] The applicator comprises a support member temporarily carrying at least one group of fibers to be placed on human keratin materials, in particular to thicken and / or lengthen eyelashes and / or eyebrows. The support member may comprise at least one channel into which a fiber of a group is inserted, this channel being defined by at least one portion entirely surrounding the fiber in section and having at least one end-of-travel stop limiting the insertion of the fiber.

[0047] In this case, the applicator advantageously comprises a plurality of channels housing, for at least some of them, a fiber, in particular between 2 and 50 channels, better between 10 and 50 channels. The applicator may comprise a plurality of channels, only some of which house a fiber, as chosen depending on the areas of eyelashes or eyebrows to be thickened or lengthened. Alternatively, all the channels house a fiber.

[0048] The inner diameter of each channel is preferably greater than a largest diameter of the fiber it contains. Preferably, the ratio Dc / Df between the diameter Dc of the channel and the largest diameter Df of the fiber is between 1.5 and 10. In the case where the ratio Dc / Df is greater than 10, the applicator preferably comprises a means for holding each fiber. This holding means ensures that the fibers do not slide uncontrollably in the channels. The holding means may comprise a narrowing of the channel such that at the narrowing, the ratio Dc / Df is less than 10. The holding means may also comprise an activatable system which clamps the fibers in a part of the channel. The holding means may also comprise a non-slip material arranged in the channel, over all or part of its length.

[0049] The channels may be formed within an elastomeric material, in particular a material with a Shore A hardness of 0 to 50, preferably 8 to 40.

[0050] The elastomeric material provides the applicator with flexibility so that a user can pinch or deform the applicator to secure the fibers, then release the pressure or twist to allow the fibers to move and leave their respective channels. The elastomer material can be chosen from the group consisting of a silicone such as Platsil - Silicone Gel from Polytec, rubbers from vinyl polymerization with crosslinking, thermoplastic elastomer polymers TPE, generally consisting of chains comprising two blocks such as polyurethane TPE (with isocyanate block and ether / ester block), TPE-E (with polyester block and polyether block), TPE-C (with polyamide block and polyether block), TPE-S (with styrene block and polybutadiene or polyisoprene or polyethylene block). Such a material advantageously makes it possible to obtain a non-slip feel, which at least slightly retains the fiber in the channel, preventing it from accidentally slipping out of the channel, without requiring an adhesive for this retention. This retention is preferably quite relative, which allows the fiber to be easily removed from the channel when desired.

[0051] At least one channel can be closed in section along its entire length.

[0052] At least one channel can be open in section over a portion of its length less than its total length and over a portion of its circumference less than its total circumference.

[0053] At least some of the channels may be of identical shape. In particular, all of the channels of the applicator may be of identical shape.

[0054] At least some of the channels may be of different shapes.

[0055] The channels may or may not have the shape of the fibers. If the Dc / Df ratio is less than 3, the channels preferably have the same shape as the fibers. On the other hand, if the Dc / Df ratio is greater than 10, then the channels preferably have a shape different from that of the fibers. The difference in shape can hold the fibers to prevent them from sliding naturally, particularly under the effect of gravity.

[0056] The channels may be defined by tubes. In this case, the applicator preferably comprises at least one link connecting the tubes together. This link constitutes, for example, a flexible articulation between the tubes so as to allow the orientation of one tube to be modified relative to an adjacent tube. Alternatively, the link is made so as to limit movement between the tubes, or even to prevent movement between the tubes. The link may allow the tubes to be assembled by snap-fastening.

[0057] In a particular embodiment, the channels are formed within a monolithic part. The end-of-travel stop may be formed by a portion of this part.

[0058] Each channel preferably accommodates a single fiber of a group, when it accommodates one.

[0059] The fiber(s) may protrude from the channel, through an open outlet thereof, by a length greater than or equal to 1 mm, this length being able to be different for two different fibers. The connection between fibers of the same group of fibers is formed in this length outside the channel.

[0060] The channels are for example arranged in a fan shape, in particular when formed in a monolithic part or when formed by tubes connected together.

[0061] The end-of-travel stop may be movable relative to the outlet of the channel through which the fiber exits. The end-of-travel stop is for example formed by a portion of a monolithic part in which the channels are formed, as mentioned above. It may be adjustable if necessary.

[0062] The applicator may comprise several channels which are substantially identical to each other and uniformly distributed, for example arranged in a fan shape, each channel housing a fiber. This configuration is particularly recommended for eyelash fringes with a depletion of eyelashes.

[0063] For incomplete eyelash fringes, with one or more bare areas, the applicator may be in different shapes. For example, the applicator may have a width such that it covers only a portion of the eyelash fringe. Alternatively, the applicator may cover the entire fringe with a plurality of channels but only some of them contain a fiber, facing one or more bare areas of the eyelash fringe. Or the applicator may cover the entire fringe with a plurality of channels each filled with a fiber, the applicator comprising a means for causing only the fibers that will be added to the fringe to protrude from the channels, over the bare areas of the fringe. Alternatively, the applicator may cover the entire fringe with a plurality of channels each filled with a fiber, the applicator comprising a means for preventing the release of the channels that will not be facing a bare area of ​​the eyelash fringe.In another variant, the applicator can cover the entire fringe with a plurality of channels each filled with a fiber, the applicator comprising a means for preventing the release of fibers that will not be facing a bare area of ​​the fringe of eyelashes. Among the means that can be implemented to prevent this release, the fibers can be blocked by pinching the fibers for example, or by introducing a point of glue into the tubes. In another embodiment, the applicator can cover the entire fringe with a number of channels limited to those that will be facing a bare area of ​​the fringe of eyelashes when implementing the method. Fiber-retaining applicator

[0064] Alternatively, the support member of the applicator may temporarily retain groups of fibers, in particular by gluing, by friction or by a mechanical system.

[0065] Such a mechanical system may comprise one or more parts which are movable relative to each other, for example the branches of a clamp or the coils of a spring, the mechanical system being configured to pass from a configuration from fiber retention to a group fiber release configuration, the force to be exerted on these fibers to release them from the applicator being greater in the retention configuration than in the release configuration.

[0066] The mechanical system comprises for example a spring which grips the fibers between its turns, in the retaining configuration, the spring being able to be stretched to open the turns and release the fibers. The fibers can be retained between the turns of the spring, the fibers being substantially perpendicular to the longitudinal axis of the spring. The spring can be manually actuated between the retaining and releasing configurations. The spring can comprise ends attached to manually actuated actuating levers. Alternatively, the spring is compressed or released along its longitudinal axis which can be the longitudinal axis of the applicator, the applicator comprising for example a push button and two stops near the two ends of the spring, one stop preferably being movable along the longitudinal axis upon actuation of the push button, the other stop preferably being stationary.

[0067] Alternatively, the fibers may be retained on the applicator by at least one material whose mechanical strength is degraded by a stimulus, the method consisting in subjecting the applicator to this stimulus in order to reduce the force to be exerted on the fibers in order to release them from the applicator, the exposure to the stimulus taking place before and / or during contact of the fibers with the first adhesive composition present on the eyelashes or eyebrows or hair fibers. The stimulus is for example thermal, said material then preferably comprising a wax, in particular beeswax, candelilla wax or paraffin. Alternatively, the stimulus is chemical and comprises exposing the applicator to a solvent for said material, preferably water.

[0068] The fibers may be placed on the applicator by an electrostatic flocking process.

[0069] The fibers may be completely detached from the applicator when implementing the method. Alternatively, the fibers may comprise a base at the first end portion which remains trapped by the applicator and a releasable portion which is released. In this case, the fibers may comprise a predefined area, mechanically weakened or sensitive to a stimulus enabling it to be mechanically weakened, in particular a thermal or chemical stimulus, the force to be exerted to cause the separation of the releasable portion from the root being less than the adhesive force for the adhesion of the releasable portion to the first adhesive composition. The predefined area may be located at the same location along the length of the fiber for all the fibers. Alternatively, this is not the case, which makes it possible, after release, to have fibers of variable length, capable of conferring different aesthetic effects to the eyelashes.

[0070] The fibers may be retained on the applicator by a multiple holding system, comprising a first holding system that releases the fibers for an exerted force less than the adhesive force for adhesion of the fibers to the first adhesive composition, and a second holding system that provides, when combined with the first, retention of the fibers up to a force greater than the adhesive force of the fibers to the first adhesive composition, the second system being modified during use of the applicator to apply the fibers to the first adhesive composition so as to cause the force to be exerted to cause the release of the fibers to a value less than the adhesive force for adhesion of the fibers to the first adhesive composition. The modification may comprise exposing the second holding system to a thermal or chemical stimulus.

[0071] The applicator can retain the fibers in such a way that the latter detach from the applicator when a tensile force equal to 15 mN, or even equal to 20 mN, is exerted on it. First adhesive composition

[0072] The first adhesive composition is advantageously provided to allow the adhesion of the fibers to an area of ​​human keratin materials such as the skin, the eyelid, the scalp or to the keratin fibers.

[0073] The first adhesive composition is advantageously suitable for application to the eyelashes and eyelids, the skin, the scalp, as well as for cosmetic use.

[0074] The first adhesive composition comprises or consists of an adhesive material.

[0075] For the purposes of the present invention, the term "material" designates a polymer or a polymer system which may comprise one or more polymers of different natures. This adhesive material may be in the form of a polymer solution or a dispersion of polymer particles in a solvent. This adhesive material may further contain a plasticizer. This adhesive material must have a certain adhesive power defined by its viscoelastic properties.

[0076] The adhesive materials according to the invention may for example be chosen from pressure-sensitive adhesives, for example those cited in the "Handbook of Pressure Sensitive Adhesive Technology", 3rd edition, D. Satas.

[0077] The adhesive material may be chosen from acrylic polymers or copolymers.

[0078] The pressure-sensitive adhesive materials may be chosen from acrylic polymers, in particular acrylate and methacrylate copolymers, pressure-sensitive adhesives based on rubber or based on styrene copolymers, such as, for example, styrene-isoprene-styrene (SIS) and styrene-butadiene styrene (SBS) copolymers.

[0079] Examples of suitable acrylic copolymers are commercially available under the trademarks EASTAREZ 2010, 2020 and 2050 (Eastman Chemical Co.), ACRONAL V210 (BASF), MOWILITH LDM 7255, REVACRYL 491 (Clariant) and FLEXBOND 165 (Air Products). A preferred example of acrylic copolymers is the use of the acrylates / ethylhexyl acrylate copolymer marketed by DAITO KASEI KOGYO under the name Daitosol 5500GM.

[0080] The first adhesive composition may be chosen from the eyelash adhesive composition of the range called DUO® eyelash adhesive, marketed by American International Industries, and Daitosol 5500 GM from DAITO KASEI KOGYO.

[0081] Commercial examples of suitable polymer rubbers are known under the trademarks RICON 130 polybutadiene (Atofina Sartomer) and ISOLENE 40 polyisoprene (Elementis).

[0082] Examples of suitable polyurethane-based adhesives are available under the brands SANCURE 2104 (Novéon) and VYLON UR 1400 (Toyobo Vylon).

[0083] Examples of suitable vinyl acetate copolymers are commercially available under the trademarks PVP / VA 6-630 (International Specialty Products) and FLEXBOND 149 (Air Products).

[0084] Examples of vinyl alcohol / vinyl acetate copolymers are commercially available under the trademarks CELVOL 107 (Celanese) and ELVANOL 50-42 (DuPont).

[0085] Mention may also be made of block or random copolymers comprising at least one monomer or a combination of monomers whose resulting polymer has a glass transition temperature below room temperature (25°C), these monomers or combinations of monomers being able to be chosen from butadiene, ethylene, propylene, isoprene, isobutylene, a silicone and mixtures thereof. Examples of such materials are block polymers of the styrene-butadiene-styrene, styrene-(ethylene-butylene)-styrene or styrene-isoprene-styrene type, such as those sold under the trade names "Kraton" from Kraton or "Vector" from Dexco Polymers.

[0086] The adhesive materials according to the invention may also comprise tackifying resins, such as rosins or rosin derivatives such as hydrogenated rosins, rosin esters, hydrogenated rosin esters, terpenes, resins based on aliphatic or aromatic hydrocarbons, phenolic resins, styrene resins and coumarone-indene resins. Compounds such as shellac, sandarac gum, dammar resins, elemi gum, copal resins, benzoin and mastic gum may also be mentioned.

[0087] Mention may also be made of silicone resins, which are crosslinked polyorganosiloxane polymers.

[0088] The nomenclature of silicone resins is known as "MDTQ", the resin being described in terms of the different siloxane monomer units it comprises, each of the letters M, D, T and Q characterizing a type of unit.

[0089] Among these resins, mention may in particular be made of siloxysilicate resins, which may be trimethylsiloxysilicates of formula (CH3)3XSiXO]xX(SiO4 / 2)y (MQ units) in which x and y are integers ranging from 50 to 80, lipodispersible film-forming polymers in the form of non-aqueous dispersions of polymer particles, also called NADs.

[0090] As a non-aqueous dispersion of hydrophobic film-forming polymer, dispersions of particles of a grafted ethylenic polymer, preferably an acrylic polymer, in a liquid oil phase, for example, in the form of surface-stabilized particles dispersed in the liquid fatty phase, can be used. The dispersion of surface-stabilized polymer particles can be manufactured as described in WO 04 / 055081.

[0091] Mention may also be made of dispersions of particles of Cr C4 alkyl (meth)acrylate polymer stabilized by a stabilizing agent chosen from isobornyl (meth)acrylate polymers, as described in document WO 2015 / 091513.

[0092] UV reactive adhesives can also be used.

[0093] Examples include Pros-Aide Cream Blend 331 (acrylic latex) adhesive or Eastman Chemical AQ1350 (soluble sulfopolyester polymer) adhesive. Application of the first adhesive composition

[0094] The adhesive composition can be applied in the form of a continuous film to the eyelashes, eyebrows, hair fibers, and / or to the eyelid, scalp, skin, in particular when the density of the fibers on the applicator is not too high.

[0095] Alternatively, the first adhesive composition is applied by providing non-adhesive areas between the adhesive areas, which makes it possible to control the density and distribution of the fibers that remain attached to the eyelashes, eyebrows or hair fibers.

[0096] An adhesive applicator may be used which transfers the first adhesive composition. In particular, the assembly according to the invention may comprise an adhesive applicator for applying the first adhesive composition to the eyelashes. In this case, the adhesive applicator comprises, for example, a flocked tip. The adhesive applicator may have the shape to match that of the roots of the eyelashes. In this particular case, the action is simple since it is sufficient to bring the adhesive applicator close to the fringe of eyelashes, then to let the contact deposit adhesive material on the root of the eyelashes. The adhesive applicator may also comprise, for example, a pen dispensing the first adhesive composition or an applicator cooperating with a container containing the first adhesive composition, for example an applicator fitted with a fine brush or a flocked thermoplastic tip. Second adhesive composition

[0097] The second adhesive composition may be chosen from the group consisting of adhesives, in particular adhesives which react without the need for mixing, such as alkylcyanoacrylate, with alkyl which may be an ethyl or octyl group (such as n-octyl or 2-octyl) or butyl group (such as isobutyl), solvent adhesives, for example isoprene, or adhesives which are mixed at the time of use, such as two-component adhesives, such as those involving an epoxy-functional resin and a polymerizing agent, such as 1,4,7,10-tetraazadecane, or adhesives which are used with thermal activation, in particular wax and in particular cetyl acid and alcohol esters or adhesives based on a polymer with a crosslinkable function, such as free methacrylate or acrylate.

[0098] The adhesives can be used in packaging allowing premature solidification, in particular reactive adhesives.

[0099] The second adhesive composition is preferably chosen from glues of the cyanoacrylate type and derivatives, for example an (alkyl)cyanoacrylate glue, in particular alkylcyanoacrylate with a C2-C8 alkyl chain, for example of the ethyl-, (iso)butyl- or octylcyanoacrylate type.

[0100] The second adhesive composition preferably comprises a cyanoacrylate type glue, for example tinted black.

[0101] The second adhesive composition is for example the Loctite Super-glue 3 Power Flex gel glue, based on ethylcyanoacrylate marketed by the company Henkel or the Dermabond glue based on octylcyanoacrylate marketed by the company Ethicon.

[0102] The second adhesive composition is advantageously deposited on a first part of the length of the fibers, preferably less than half the length of the fibers, on the side where the fibers adhere to the keratin materials, for example to the natural eyelashes or to the eyelid. Brief description of the drawings

[0103] The invention will be better understood upon reading the following description of non-limiting embodiments thereof, and upon examining the attached drawing, in which:

[0104] [Fig.l] schematically represents, in perspective, an example of an applicator according to the invention,

[0105] [Fig.2] schematically represents an example of a group of fibers for an applicator, for example for the applicator of [Fig.l],

[0106] [Fig.3] schematically represents the implementation of a step of the method according to the invention,

[0107] [Fig.4] schematically represents the implementation of another step of the method according to the invention,

[0108] [Fig.5] is a photograph illustrating an eyelid and eyelashes lined with fibers after implementing the method according to the invention,

[0109] [Fig.6] schematically represents another example of a group of fibers for an applicator according to the invention,

[0110] [Fig.7] schematically represents, in perspective, another example of an applicator according to the invention, comprising groups of fibers according to [Fig.6],

[0111] [Fig.8] schematically represents, in perspective, another example of an applicator according to the invention, comprising groups of fibers according to [Fig.6],

[0112] [Fig.9] schematically represents, in side view, another example of an applicator according to the invention, comprising groups of fibers according to [Fig.6],

[0113] [Fig. 10] schematically represents, in perspective, another example of an applicator according to the invention, comprising groups of fibers according to [Fig.6],

[0114] [Fig. 11] schematically represents an example of an assembly according to the invention,

[0115] [Fig. 12] schematically represents, partially and in perspective, another example of an applicator according to the invention,

[0116] [Fig. 13] schematically represents, partially and in perspective, another example of an applicator according to the invention, and

[0117] [Fig. 14] schematically represents, partially and in perspective, another example of an applicator according to the invention. Detailed description

[0118] In the remainder of the description, identical elements or elements having equivalent functions bear the same reference signs. Their description is not repeated for each of the figures, only the main differences between the embodiments being highlighted.

[0119] [Fig. 1] illustrates an applicator 1 in accordance with an example of implementation of the invention, for applying fibers to human keratin materials, in particular eyelashes, eyebrows, hair fibers and / or eyelids, facial skin, the skull or the scalp.

[0120] The support member 10 of the applicator 1 comprises at least one channel 30 in which a fiber 2 is inserted. In this example, the support member 10 comprises several channels 30 which are substantially identical to each other and uniformly distributed, each channel 30 comprising a fiber 2. The support member 10 forms a monolithic part, made of elastomeric material, of substantially trapezoidal shape, with the channels 30 arranged in a fan shape. The support member 10 has internally hollows forming the channels 30 and forms end stops 50 of travel at the end of the channels 30, inside the support member 10 limiting the insertion of the fiber 2, made in the monolithic part. Each channel 30 is defined by at least one portion 40 entirely surrounding the fiber 2 in section.

[0121] Each channel 30 comprises, opposite the stop 50, an open outlet 70, through which passes the fiber 2 that it contains. The fibers 2 protrude from the outlets 70 by a length that can vary from one fiber to another, of the order of approximately 1 mm or 2 mm. The internal diameter of each channel 30 is greater than the largest diameter of the fiber 2 that it contains.

[0122] In this example, the channels 30 are closed in section over their entire length.

[0123] In this example, the fibers 2 are made of silk. The fibers 2 have a higher large diameter between approximately 50 and 200 pm.

[0124] The support member 10 comprises a gripping part 60 beyond the stops 50, opposite the outlets 70 of the channels 30.

[0125] The applicator 1 comprises a number n of fibers 2 temporarily carried by the support member 10. These n fibers 2 have a portion 3 extending in front of the support member 10 when carried by the support member 10, as illustrated. These n fibers 2 comprise at least one group 8 of at most m fibers 2 connected together outside the support member 10, with m<n et m> l. In the example shown, the number m = 2 exactly and all the fibers are connected two by two.

[0126] Still in this example, the m fibers 2 are connected together at their end 5. At least two of the m fibers, in this example, all the m fibers, are connected together by gluing, by welding, by fusion and / or at least two of the m fibers are formed by folding a single filament 6, as is the case for the fibers 2 visible in [Fig.2]. Indeed, the group 8 in this figure is formed by a single filament 6, folded in two to form two fibers 2 connected together at their end 5. They form a V with curved branches.

[0127] In this example again, the fibers 2 have non-zero curvatures, substantially different from each other for at least some of them.

[0128] Within the support member 10, the unbonded ends 7 of at least two of the m fibers 2 are kept at least d=1 mm apart from each other.

[0129] The support member 10 can be used for implementing the method described below.

[0130] A first step of this method of laying fibers 2 on an area of ​​human keratin materials, for example on eyelashes and / or an eyelid, consists of applying a first adhesive composition to said area, for example a PSA adhesive on the eyelid P. A second step, illustrated in Figures 3 and 4, consists of bringing fibers 2 carried by the applicator 1 into contact with the first adhesive composition. Then, in a third step, the applicator 1 is moved away from said area, so that the groups 8 of fibers 2 adhere, by at least one end portion 5 linked to the fibers, to said area. The result visible in the photograph of [Fig.5] is obtained.

[0131] In a possible fourth step, a second adhesive composition, for example a cyanoacrylate-based fixing glue, is deposited on at least part of the fibers 2 adhering to said zone.

[0132] The method may also comprise a step which follows the first step, of drying the first adhesive composition, for a duration which may be between 1 min and 5 min.

[0133] After the possible fourth step of depositing the second adhesive composition, it is possible to provide a step of combing at least a portion of said fibers 2 adhering to said zone, during the setting of the second adhesive composition, if necessary.

[0134] The method may also include additional steps, at the end of the method, consisting of applying a cosmetic product to the eyelashes or eyebrows, in particular mascara and / or applying an eyelash curler and / or carrying out a heat treatment to curl the eyelashes.

[0135] The fibers 2 of a group 8 can be connected to each other in other ways. [Fig. 6] shows a group of two fibers 2 which are connected to each other by an element 15 external to the fibers, in particular a jumper. They form a U with branches substantially parallel to each other and curved. The distance between the fibers 2 at their connected ends 5 is substantially equal to the distance between the fibers 2 at their unconnected ends 7. This distance is maintained on the applicator 1 illustrated in [Fig. 7], which carries them.

[0136] In this example, the support member 10 retains the groups 8 of fibers 2 by their unbonded ends 7, for example by an adhesive present on the surface 16 of the support member 10. The groups 8 are equally distributed over several rows on the surface 16 of the support member 10. The gripping portion 60 is a handle. The fibers 2 do not cross each other. All the groups 8, as in the previous example, comprise two fibers.

[0137] In the example illustrated in [Fig.8], the groups 8 of fibers 2 are arranged in a staggered pattern on the surface 16.

[0138] In the examples of Figures 7 and 8, the surface 16 of the support member 10 is flat. In the example of [Fig.9], the surface 16 is curved, concave towards the fibers 2.

[0139] In the example of [Fig. 10], the surface 16 is flat but the groups 8 of fibers are arranged along a curved line L on this surface. This can make it possible to adapt to the curvature of the eyelash fringe.

[0140] [Fig. 1 1] shows an example of an assembly according to the invention, comprising, in particular within the same packaging device, for example in a hermetically sealed package, the first adhesive composition A contained in a container 150, the applicator 1 with the support member 10 carrying the fibers 2 to be laid and the second adhesive composition B contained in a container 42.

[0141] The first adhesive composition A is for example chosen from the adhesive composition for eyelashes from the range called DUO® eyelash adhesive, marketed by American International Industries, or that called Daitosol 5500GM, an acrylates / ethylhexyl acrylate copolymer marketed by DAITO KASEI KOGYO. Another suitable first adhesive composition may also be used.

[0142] In this non-limiting example, the container 150 comprises a reservoir 32 of the first adhesive composition A, as well as a cap 33 provided with a rod 34 carrying an application element 35 at a free end. A wiping member 36 is arranged in the neck 37 surmounting the reservoir 32.

[0143] The second adhesive composition B may be contained in a similar or different container 42.

[0144] The second adhesive composition B may be Loctite Super-glue 3 Power Flex gel, marketed by the company Henkel.

[0145] The applicator 1 comprises in this example a gripping part 60 and a support member 10 with the support surface 16 to which the unbonded ends 7 of the fibers 2 are temporarily connected in groups 8 of at least two fibers.

[0146] The first adhesive composition A, the second adhesive composition B and the applicator 1 may be offered for sale separately.

[0147] The assembly may also include a cosmetic product such as mascara in a reservoir of a container comprising a mascara brush or comb, a mechanical or heated eyelash curler, a comb or brush and other accessories for treating eyelashes or eyebrows or hair fibers.

[0148] The applicator 1 may still be different without departing from the scope of the invention.

[0149] [Fig. 12] shows another example of an applicator 1 comprising a rod 101 extending along a longitudinal axis X and, at one end of the rod 101, in a non-visible manner, a push button which controls at the other end 102 of the rod 101, the opening or closing of a spring 45 located on the rod 101, parallel to the axis X. Between the turns of the spring 45 are held the unbound ends 7 of the fibers 2 of groups 8 in the closed position of the spring 45, as illustrated in [Fig. 12]. When the push button is activated, the spring 45 is moved into the open state which allows the groups 8 of fibers 2 to be released.

[0150] In [Fig. 12], the applicator 1 also comprises a spring 45, arranged perpendicular to the axis of clamps 46 and 47, at one end 48 of the latter. The bringing together the clamps 46 and 47 at one end of the clamps opposite the end 46 makes it possible to separate the turns of the spring 45 so as to release the groups 8 of fibers 2. On the contrary, in the separated position of the end of the clamps opposite the end 46, the fibers 2 are held between the turns of the spring 45, as illustrated.

[0151] [Fig. 14] illustrates yet another example of an applicator 1 comprising the member of support 10, shown without the fiber groups. In this example, the applicator 1 comprises a plurality of tubes 105 connected together by joints 280, forming the channels 30 intended to each contain a fiber, like the applicator 1 of [Fig.l]. All the channels 30 or part of them can be closed, except for the outlet 70. All the channels 30 or part of them can be partially open in section, comprising an open area over part of their section. The joints 280 can be flexible to arrange the tubes 105 in a fan shape.

[0152] The invention is not limited to the examples which have just been described. In particular, the method can be implemented for the placement of fibers on the eyebrows or on the scalp.

Claims

Claims

1. Cosmetic applicator (1) for applying fibers (2) to human keratin materials, comprising a number n of fibers (2) carried by a support member (10) so as to be able to separate from the support member (10) during application, these n fibers (2) having a portion extending in front of the support member (10) before separation from the support member (10), these n fibers (2) comprising at least one group (8) of at most m fibers (2) connected together outside the support member (10), with m<n et m> l, at least two of the m fibers (2) being connected to each other by gluing, welding or fusion and / or at least two of the m fibers (2) being formed by folding a single filament (6).

2. Applicator (1) according to claim 1, the m fibers (2) being connected to each other at their end (5).

3. Applicator (1) according to one of claims 1 and 2, at least two of the m fibers (2) being connected to each other by gluing, welding or fusion.

4. Applicator (1) according to one of claims 1 to 3, in which at least two of the m fibers (2) are formed by folding a single filament (6).

5. Applicator (1) according to any one of the preceding claims, wherein, in at least one group (8), the fibers (2) are connected to each other by an element (15) external to the fibers (2).

6. Applicator (1) according to any one of the preceding claims, wherein the number m of fibers (2) in at least one group (8), better in each group (8), is exactly equal to two.

7. Applicator (1) according to any one of the preceding claims, at least a portion of the fibers (2) having a non-zero curvature.

8. Applicator (1) according to any one of the preceding claims, in which at least two fibers (2) have different non-zero curvatures.

9. An applicator (1) according to any preceding claim, wherein the unbonded ends (7) of at least two of the m fibers (2) are held at least 1 mm apart on the support member (10).

10. Applicator (1) according to any one of the preceding claims, the groups (8) of fibers (2) being aligned with each other on the support member (10) in at least one row.

11. Applicator (1) according to any one of the preceding claims, in which the support member (10) temporarily retains fibers (2) by a mechanical system comprising one or more parts which are movable relative to each other, the mechanical system being configured to pass from a configuration for retaining fibers (2) to a configuration for releasing fibers (2) from groups (8), the force to be exerted on these groups (8) of fibers (2) to release them from the applicator (1) being greater in the retaining configuration than in the releasing configuration.

12. Applicator (1) according to any one of the preceding claims, in which the support member (10) of the fibers (2) comprises at least one channel (30) in which a fiber (2) of a group (8) is inserted, this channel (30) being defined by at least one portion (40) entirely surrounding the fiber (2) in section and having at least one end-of-travel stop (50) limiting the insertion of the fiber (2).

13. Method for applying fibers (2) to an area of ​​human keratin materials, using an applicator (1) according to any one of the preceding claims, the method comprising the following steps: a) applying a first adhesive composition (A) to at least a portion of the fibers (2) and / or to said area, b) placing at least one group (8) of fibers (2) carried by the support member (10) in contact with said area, c) moving the support member (10) away from said area so that the fibers (2) adhere to said area.

14. Method according to the preceding claim, in which said area is constituted by keratin fibers such as eyelashes, eyebrows, hairs, hair fibers, and / or by the eyelid, facial skin, scalp or skull.

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