Application of cosmetic products to a body surface and associated process

Abstract

Cosmetic Product Application Assembly for a Body Surface and Associated Method. The present invention relates to a cosmetic product application assembly comprising a plurality of applicators (14), each applicator (14) having a gripping portion (24) and a product support portion (26) bearing protruding product, in particular a plurality of protruding fibers (28), and a retaining material (30) detachably holding the product onto the product support portion (26). Adjacent applicators (14) are connected to each other by frangible links (16) located away from the product support portions (26), the product support portions (26) of adjacent applicators (14) delimiting a guard space (31) between them. Figure for the abstract: Figure 1

Description

Title of the invention: Assembly for applying a cosmetic product to a body surface and associated method

[0001] The present invention relates to a cosmetic product application assembly for a body surface, comprising a plurality of applicators, each applicator having a gripping portion and a product support portion bearing protruding product, in particular a plurality of protruding fibers, and a retaining material detachably holding the product on the product support portion.

[0002] Such an assembly is intended in particular for the application of a fiber bundle, notably to mask or correct localized alopecia, or low hair density, for example, in the eyebrows, beard, or scalp. Such an assembly is also intended for the application of a fiber bundle for a color change or intensification of the (natural or artificial) hair color, for example, to darken a blonde area.

[0003] Alternatively, the cosmetic product is a cosmetic product detachable from a support, for example formed of beads, encapsulated cosmetic product, or compact powder.

[0004] The term “cosmetic product” more generally means any product as defined in Council Directive 93 / 35 / EEC of 14 June 1993.

[0005] FR3039368A1 describes a cosmetic treatment process for applying fibers on a body surface, in order to fill in areas of sparse eyebrows, for example, due to eyebrow alopecia or sparse eyebrows.

[0006] In this process, the fibers are brought into contact with an adhesive composition applied to a body surface by means of an applicator, then the applicator is moved away from the body surface so as to release the fibers which adhere to the body surface.

[0007] The applicator described in this document comprises a gripping part to which fibers are temporarily attached, the whole being arranged in a package.

[0008] The applicator can, for example, be as described in EP-448955, with a flat support on one face of which fibers are arranged in an organized manner. These fibers are loosely held to the support by means of a film of material.

[0009] The use of such an applicator to implement the process described in FR3039368A1 does not give complete satisfaction.

[0010] Indeed, grasping and manipulating the gripping part with the fingers creates a high risk of contact between the fingers and the fibers. This can lead to disorganization or crushing of the fibers, as well as fiber loss. This is particularly true when applying the fibers to the body surface, where the described manipulation results in poor visibility during application.

[0011] Such deterioration of the organization of the fibers before or during application, as well as the lack of visibility, affect the aesthetics and realism of the result after application.

[0012] Furthermore, manipulating the gripping part with the fingers, as described in FR3039368A1, can in some cases be impractical and lead to a lack of precision in targeting the desired application area. In addition, potential contact between the fingers and the fibers leads to fiber contamination and, therefore, less satisfactory hygiene.

[0013] An object of the invention is therefore to have a set of product application, in particular of fibers, on a body surface of a user which allows the product, in particular in the form of fibers for example organized in bundles, to remain intact without disorganization during its transport and storage, the set of application remaining simple to use and inexpensive and allowing a precise and hygienic application of the product.

[0014] For this purpose, the invention relates to a product application assembly as defined above, characterized in that adjacent applicators are connected to each other by frangible links located away from the product support portions, the product support portions of adjacent applicators delimiting between them a guard space.

[0015] The presence of frangible links between the gripping portions of the applicators makes it possible to easily detach each applicator from the plurality of applicators by grasping the gripping portion by hand, without risking disorganizing the product, in particular in the form of fibers.

[0016] Furthermore, since the product support portions are delimited from each other by a guard space, and are not connected to adjacent applicators by a frangible link, the risk of collision between products from several applicators during transport, storage, or handling of the applicators is greatly reduced.

[0017] Thus, the user can have a very practical and inexpensive applicator, given its simple structure. This applicator guarantees a satisfactory aesthetic result when applying the product to the body surface, thanks to the product's organization and the precision of handling it allows.

[0018] The risk of contact between the product and fingers is reduced, ensuring proper hygiene.

[0019] The application set may include the following feature:

[0020] - each applicator extends elongatedly along a longitudinal axis between a first end defined by the gripping portion, and a second end defined by the product support portion, the second ends of the adjacent applicators being separated transversely with respect to the longitudinal axis.

[0021] The elongated shape of the applicator between a first and second end ensures very compact storage of the product, while offering effective separation between the product support parts, since the second ends are well separated.

[0022] The product application assembly may include the following feature: - the second end of at least one applicator is tapered.

[0023] The second tapered end of the applicator ensures very precise application of the product by guiding the user, particularly when applying the product with the aid of a mirror. The point of application of the product on the body surface is made more precise.

[0024] According to variants:

[0025] - the first ends are aligned along an axis transverse to the axis longitudinal.

[0026] - the first extremities are located on a non-linear curve, in particular a arc of a circle or ellipse, the second ends of adjacent applicators being further apart than the first ends of adjacent applicators.

[0027] Aligning the first ends along a line, extending along a transverse axis relative to the longitudinal axis of each applicator allows for compact and secure storage of the applicators, for example in a case.

[0028] On the contrary, the arrangement of the first ends following a non-linear curve ensures a satisfactory aesthetic appearance, for example in the shape of a fan, which is attractive to the user.

[0029] According to variants:

[0030] - the gripping portion of at least one applicator has a maximum width greater than the maximum width of the product support portion of at least one applicator.

[0031] - the length of each portion of product support of at least one applicator is greater than the length of each gripping portion of at least one applicator.

[0032] Providing an enlarged gripping portion ensures effective and precise gripping by the user's fingers, without risk of touching the product, particularly in the form of fibers, and disturbing its arrangement on the product support portion.

[0033] The enlarged length of the product support portion allows the storage of a linear bundle of product which can be applied in one piece to the body surface while limiting the bulk of the gripping portion.

[0034] Thus, each applicator has a key shape which is intuitively simple to use while offering a satisfactory aesthetic appearance.

[0035] The product application assembly may include the following feature:

[0036] -the product support portion includes a central cup receiving the retaining material and the product, the product support portion including a rim projecting at least on either side of the central cup, the rim being devoid of product, or in which the product support portion is devoid of relief up to its lateral edges.

[0037] The central, cup-shaped area easily accommodates the adhesive material for temporarily retaining the product on the applicator and slightly separates the product from the periphery of the product support portion, further limiting the risk of contact between products, particularly fibers, between two adjacent applicators, and thus the risk of disorganization. This is especially important when detaching the applicator or during its subsequent handling.

[0038] A flat central area, devoid of hollow or protruding relief, simplifies the addition of the adhesive material, particularly when a screen printing application process is used.

[0039] According to variants:

[0040] - each applicator is formed of at least one layer of cellulosic material, in particular of a layer of cardboard.

[0041] - each applicator comprises a first lower layer of material cellulosic, defining grooves having an amplitude FI and a waviness period PI, and a second upper layer of cellulosic material, supporting the product, the second upper layer having grooves having an amplitude FS less than the amplitude FI of the grooves of the first lower layer and / or having a waviness period PS less than the waviness period PI of the grooves of the first lower layer.

[0042] Forming applicators from cellulosic material is particularly effective in terms of environmentally friendly design, as it reduces waste and allows for the recyclability of the material forming the applicators. Thus, the entire applicator, with the exception of the product and the product-holding material, is formed from cellulosic material. The entire application assembly is therefore produced with a reduced environmental impact, promoting recycling.

[0043] Furthermore, when the applicator has a two-layer structure, the lower layer with large-amplitude grooves and a long waviness period reduces the material cost while ensuring structural rigidity, and the top layer with grooves of lower amplitude and shorter wave period, offers a smoother surface appearance which allows efficient and homogeneous application of the adhesive material retaining the product and of the product on this material.

[0044] The product application assembly according to the invention may include the following feature:

[0045] - the frangible joint is formed of lines of lesser thickness, grooves, of punch cuts in dotted lines, or continuous cuts in mid-layer.

[0046] Creating a frangible bond in the form of a thinner line, a groove, a perforated cut in dotted lines or a cut in half-layer is simple and inexpensive to achieve, while offering simple and reliable detachment of each applicator.

[0047] In one variant, the application set includes the following feature: - a housing defining a background receiving the plurality of applicators.

[0048] The presence in the application assembly of a manipulable case between an open and a closed configuration effectively protects the products worn by the applicators during transport and storage, while ensuring easy access for the user when applying the product to the body surface.

[0049] In variants:

[0050] -the case includes a movable flap between a closed configuration of the case, covering the products of the applicators, and an open configuration for access to the applicators, the flap being connected to the bottom by a rim of height greater than the cumulative height of the product and the portion of product support, the flap being disposed totally away from the product in the closed configuration.

[0051] - the housing has a step, defining with the base a receiving compartment applicators, the flap applying to the step in the closed configuration, the height of the step being greater than the cumulative height of the product and the portion of product support, the flap being positioned completely away from the product in the closed configuration.

[0052] The design of the housing with a deployable flap further simplifies the use of the application assembly, since the flap can be opened easily and intuitively, while its positioning in the closed configuration guarantees the integrity of the product.

[0053] The use of a step of sufficient height secures the flap in the closed configuration, preventing contact with the product carried by the applicators, further protecting their organization before use.

[0054] In one variant:

[0055] - the plurality of applicators comprises at least two applicators with portions of product support with different areas from one applicator to another and / or products, in particular fiber bundles, of different areas from one applicator to another, or in which the plurality of applicators includes at least one applicator having the shape of a body surface covered with keratin fibers onto which the product is to be applied, in particular an eyebrow shape.

[0056] Providing a plurality of applicators having at least two applicators with product support portions having different areas and / or products, in particular fiber bundles, of different areas makes it possible to adapt the product deposition to the body area of ​​application, by offering for example an applicator with a large product support portion for application on large body areas and an applicator with a refined product support portion for precise application on a small body area.

[0057] Providing an applicator in the shape of a body surface covered with keratin fibers on which the product is to be applied, in particular an eyebrow shape, guides the user in depositing the product by ensuring that the product, in particular in the form of fibers, is deposited in a pattern suitable for the keratin fiber coverage.

[0058] The invention also relates to a method for applying cosmetic products, in particular fibers, to a body surface, comprising the following steps: - providing a user with a set as defined above; - application, by a user, of an adhesive composition onto the body surface; - detachment by a user of an applicator from the plurality of applicators by breaking the frangible link; - the user grasps the gripping portion, and brings the product support portion into contact with the adhesive composition on the body surface to bring the product, in particular the free ends of the fibers, into contact with the adhesive composition; - detachment of the product from the product support portion by moving the applicator away from the body surface.

[0059] The invention will be better understood upon reading the following description, given solely by way of example, and made with reference to the accompanying drawings, in which: - [Fig.1] Fig.1 is a three-quarter front perspective view of a string of applicators in a product application assembly, here in the form of fibers, according to the invention; - [Fig.2] Fig.2 is a view of a case designed to hold the rosary of applicator, and of an applicator having been removed from the case; - [Fig. 3] Fig. 3 is a top view of the case in configuration open; - [Fig.4] The [Fig.4] is a view analogous to the [Fig.1] of a variant of a string of applicators; - [Fig.5] The [Fig.5] is a view analogous to the [Fig.1] of another variant of a string of applicators; - [Fig.6] The [Fig.6] is a view analogous to the [Fig.1] of another variant of a string of applicators.

[0060] A first set 10 of cosmetic product application according to the invention is shown in figures 1 to 3.

[0061] The cosmetic product here is formed by fibers which will be described in detail below.

[0062] Alternatively, the cosmetic product is a cosmetic product detachable from a support, for example formed of beads, encapsulated cosmetic product, or compact powder.

[0063] As illustrated by [Fig.1], the assembly comprises a string 12 of detachable applicators 14, linked in pairs by frangible links 16. An applicator 14 detached from the string 12 is visible in [Fig.2].

[0064] With reference to [Fig.2], the product application assembly 10 further comprises a case 18 that can be manipulated by a user between a closed configuration for transporting and storing the string 12 of applicators 14 and an open configuration for picking up at least one applicator 14, shown in [Fig.3].

[0065] The product application assembly 10 further includes at least one container 19 for receiving an adhesive composition intended to be applied to the body surface.

[0066] The adhesive composition contained in container 19 is as described in FR3039368. It is suitable for application to the skin and for cosmetic use.

[0067] The adhesive composition comprises or is constituted by an adhesive. For the purposes of this invention, "adhesive" means a polymer or a polymeric system that may comprise one or more polymers of different types. This adhesive is advantageously in the form of a polymer solution or a dispersion of polymer particles in a solvent.

[0068] This adhesive preferably contains a plasticizer. This adhesive material has a tackiness defined by its viscoelastic properties. The adhesives are chosen in particular from among "Pressure Sensitive Adhesives" type adhesives, for example, such as those cited in the "Handbook of Pressure Sensitive Adhesive Technology," 3rd edition, D. Satas. Pressure sensitive adhesives are chosen in particular from acrylic polymers, especially acrylate and methacrylate copolymers, rubber-based pressure sensitive adhesives, or styrene copolymer-based pressure sensitive adhesives, for example, such as styrene- Isoprene-styrene (SIS) and styrene-butadienestyrene (SBS). It may also be urethane polymers, polyurethanes, silicones, such as Bio-PSA, ethylene-vinyl acetate polymers, block copolymers based on styrene or natural gums, chloroprene, butadiene, isoprene, neoprene or similar.

[0069] By way of non-limiting examples of pressure-sensitive adhesives based on rubbery polymers, examples include natural rubber (poly(cis-1,4-isoprene)), methyl methacrylate-isoprene graft copolymers, styrene-butadiene copolymers, butyl rubber, acrylonitrile-butadiene rubber, styrene-isoprene block copolymers, polybutadiene, ethylene-butylene block copolymers, and polychloroprene. Examples of pressure-sensitive adhesives comprising polar acrylic polymers include block or static copolymers based on acrylic acid, alkyl acrylates and alkyl methacrylates, as well as copolymers of these acrylics with ethylene and vinyl acetate.

[0070] Other pressure-sensitive adhesives include butyl acrylate, butyl methacrylate, and acrylic acid copolymers, these copolymers being commercially available, for example, under the brand name RODERM 560 (Rohm and Haas). An example of a pressure-sensitive adhesive that may be partially suitable is poly(2-ethylhexylacrylate), for example, that commercially available under the brand name GEL-TAC 100G (Advanced Polymer 30 International), as a 40% aqueous dispersion of 15-micron adhesive acrylic microspheres. Examples of suitable acrylic copolymers are commercially available under the brand names EASTAREZ 2010, 2020 and 2050 (Eastman Chemical Co.), ACRONAL V210 (BASF), MOWILITH LDM 7255, REVACRYL 491 (Clariant) and FLEXBOND 165 (Air Products).5. Commercial examples of suitable polymeric rubbers are known under the brand names RICON 130 polybutadiene (Atofina Sartomer) and ISOLENE 40 polyisoprene (Elementis). Examples of suitable polyurethane-based adhesives are available under the brand names SANCURE 2104 (Novéon) and VYLON UR 1400 (Toyobo 10 Vylon). Examples of suitable vinyl acetate copolymers are commercially available under the brand names PVP / VA 6-630 (International Specialty Products) and FLEXBOND 149 (Air Products). Examples of vinyl alcohol / vinyl acetate copolymers are commercially available under the brand names CELVOL 107 (Celanese) and ELVANOL 50-42 (Dupont).We can also mention block or statistical 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, silicone, and mixtures thereof. Examples of such materials are block polymers of the styrene-butadiene-styrene, styrene-(ethylene-butylene)-styrene, styrene-isoprene-styrene type, such as those sold under the trade names "Kraton" by Kraton or "Vector" by Dexco Polymers.

[0071] Adhesives may further comprise tackifying resins, such as rosins or rosin derivatives such as hydrogenated rosins, rosin esters, hydrogenated rosin esters, terpenes, aliphatic or aromatic hydrocarbon resins, phenolic resins, styrenic resins, and coumarone-indene resins. Also included are compounds such as shellac, sandarac gum, dammars, elemi, copals, benzoin, and mastic gum. Silicone resins, which are cross-linked polyorganosiloxane polymers, may also be mentioned. The nomenclature for silicone resins is known as "MDTQ," where the resin is described according to the different siloxane monomeric units it comprises, with each letter "MDTQ" characterizing a type of unit.Among these resins, we can mention in particular siloxysilicate resins, which can be trimethylsiloxysilicates with the formula RCH3)3XSiXOLX(SiO4 / 2)5, (MQ units) where x and y are integers ranging from 50 to 80, and lipodispersible film-forming polymers in the form of non-aqueous dispersions of polymer particles, also called "NADs." As a non-aqueous dispersion of hydrophobic film-forming polymer, dispersions of particles of a grafted ethylenic polymer, preferably acrylic, can be used in a liquid oil phase, for example, in the form of surface-stabilized particles dispersed in the liquid oil phase. The dispersion of surface-stabilized polymer particles can be manufactured as described in document WO 04 / 055081.Other examples include dispersions of C1-C4 alkyl (meth)acrylate polymer particles, stabilized by a stabilizing agent selected from isobornyl (meth)acrylate polymers, as described in document WO 2015 / 091513. UV-reactive adhesives can also be used. Examples include Pros-Aide Cream Blend 331 Adhesive (acrylic latex), Eastman Chemical AQ1350 adhesive (soluble polyester sulfonic polymer), and the green DUO® adhesive marketed by Ardell® at www.ardellshop.com.

[0072] Preferably the adhesive of the adhesive composition is applied to the body surface in a continuous film, particularly when the density of product on the applicator is not too high.

[0073] Alternatively, the adhesive is applied by leaving non-adhesive areas between the adhesive zones, which provides control over the density and distribution of the product which remain fixed to the body surface. This reduces the amount of product that transfers, and results in a more natural finish, especially when the product density on the applicator is high.

[0074] When the adhesive areas are disjoint, two adjacent adhesive areas can be separated from each other by a distance (measured from edge to edge) ranging from 30 microns to 3 mm, or preferably from 100 microns to 1 mm. The size of the spaces between two adjacent adhesive areas, separated by a non-adhesive area, ranges, for example, from 30 µm to 3 mm, or preferably from 100 µm to 1 mm.

[0075] The adhesive areas may be in the form of a network, preferably a dot network, in particular a dot network with a diameter of 300 microns to 3 mm. Alternatively, the adhesive areas may be in the form of a network of lines, or a network of lines and dots, or a grid. The network may be regular or irregular. An irregular network, in particular a random or pseudo-random one, is advantageous in that it provides a more natural appearance.

[0076] In the case of a point array, the points can be of any shape, for example, circular or non-circular. All the points in the array can be the same shape, or alternatively, within the array the shape and / or size of the points may vary, for example, with a variation in size or shape depending on the location within the array. Preferably, the shape of the points is circular. Also preferably, the array is irregular, with a non-constant spacing between two adjacent points.

[0077] The adhesive areas can be formed by any suitable means, for example, using an adhesive applicator designed to deposit the adhesive onto the skin in widely spaced locations. The adhesive areas can be formed using a dispenser having at least one dispensing nozzle with a dispensing orifice through which the adhesive is dispensed. An applicator that transfers the adhesive by dabbing can be used. In one embodiment, the adhesive is applied using a stencil. The adhesive can be applied by spraying, in particular through the stencil.

[0078] The adhesive can be applied by sticking one or more adhesive objects to the skin, particularly in the form of pads. In particular, the pads can be made of a double-sided adhesive film, coated on both sides with a removable protective film. The double-sided adhesive film is pre-cut into pads. The density of adhesive areas ranges, for example, from 4 per cm² to 700 per cm², ideally between 10 per cm² and 50 per cm², and even better between 20 per cm² and 30 per cm².

[0079] With reference to [Fig.1], the string 12 of applicators 14 comprises a plurality of adjacent applicators 14 connected successively to each other.

[0080] Each applicator 14 away from the ends of the string 12 is connected to two adjacent applicators 14, on either side of the applicator 14. The applicators 14 located at the end of the string 12 are connected to a single adjacent applicator 14.

[0081] Each applicator 14 extends here along a longitudinal axis AA' of applicator between a first end 20, and a second free end 22.

[0082] The applicator 14 includes a gripping portion 24, containing the first end 20, intended to be grasped by the user's fingers to detach the applicator 14 from an adjacent applicator 14, and to manipulate the applicator 14 in order to apply the product, in particular fibers, to the user's body surface.

[0083] The applicator 14 further includes a product support portion 26 containing the second end 22 and projecting from the gripping portion 24 along the longitudinal axis A-A'.

[0084] Each applicator 14 further comprises, carried by the product support portion 26, the product here formed of a bundle 27 of fibers 28 and a product retention material 30.

[0085] The retaining material 30 is configured to temporarily hold the product, in particular fibers 28, on the product support portion 26, particularly during transport, storage, and handling of the applicator 14, allowing the product to detach from the product support portion 26 when the product is applied to the adhesive composition applied to the user's body surface.

[0086] Advantageously, in the example shown in the figures, the gripping portion 24, and the product support portion 26 of each applicator 14 are made from cellulosic material.

[0087] The cellulosic material comprises cellulosic fibers arranged in a three-dimensional structure. These cellulosic fibers may originate from paper pulp produced from wood or plant fibers.

[0088] The cellulosic material thus includes, for example, paper fiber, cardboard fiber, wood fiber, or plant fiber, or paper pulp, or cardboard pulp, or a mixture of these materials.

[0089] The use of this type of material has the advantage of being derived from renewable resources and thus reducing the use of raw materials from the petrochemical industry. These materials can be recycled through recycling channels dedicated to paper and cardboard. In certain advantageous cases, they can also benefit from the biodegradability of cellulosic fibers. Thus, the use of these materials improves the recyclability and / or degradability of the applicator 14, and these materials can also be advantageously sourced from recycling channels.

[0090] Cellulosic fibers can come, for example, from trees (for example, from softwood fibers, such as pine, fir or spruce, or from hardwood fibers, such as birch, beech, poplar, aspen, acacia or eucalyptus), from plants, such as bamboo, flax, hemp, or from agricultural by-products, such as bagasse, the fibrous residue of sugar cane, wheat straw, rice straw, corn stalks or a mixture of these materials.

[0091] The applicator 14, made of cellulosic material, is, for example, provided with a coating of another nature applied to its inner and / or outer surface. This coating serves to protect the fibers and improve the surface properties of the object made from these fibers.

[0092] The materials used for the coating are generally layers, varnishes, resins which can be organic (Polyethylene - PE, Polypropylene - PP, Polyethylene terephthalate - PET, acrylics or acrylic derivatives, latex, Polyhydroxyalkanoate - PHA, Polylactic acid - PLA, waxes, paraffins derived from algae or starch) or inorganic (aluminum oxide, silicon oxide for example) and deposited in thicknesses ranging from a few nanometers to several hundred microns.

[0093] Advantageously, the applicator 14 is formed of a first lower stiffening layer 32 made of cellulosic material, having two opposing sheets separated by grooves, having an amplitude FI and a waviness period PL

[0094] It further comprises a second upper layer 34 assembled onto the first lower layer 32 for supporting the product, particularly in the form of fibers 28. The second upper layer 34 also has two opposing sheets separated by grooves, having an amplitude FS less than the amplitude FI and / or a waviness period PS less than the waviness period PL

[0095] Thus, the first lower layer 32 provides structural rigidity to each applicator 14, while offering a lower material cost. The second upper layer 34 has a smoother surface appearance than the first lower layer 32, which is advantageous for the retaining material 30 and for the product.

[0096] The flutes are either macroscopic to form corrugated cardboard, or micro- or nanoscopic to form respectively micro- or nano-flutes.

[0097] Alternatively, the applicator 14 is formed of a single layer, in particular a single layer of flat or corrugated cardboard.

[0098] In the example shown in [Fig.1], each applicator 14 has a general key shape.

[0099] The gripping portion 24 has a maximum width, taken perpendicular to the longitudinal axis A-A', greater than the maximum width of the product support portion 26, taken perpendicular to the longitudinal axis A-A'.

[0100] Thus, the gripping portion 24 has two longitudinal edges 35A, 35B, from which at least one frangible connection 16 with another applicator 14 is present before detachment of the applicator 14, and two transverse edges 36C, 36D, the product support portion 26 protruding from a transverse edge 36D.

[0101] The product support portion 26 here has two parallel longitudinal edges 37A, 37B, parallel to the longitudinal edges 35A, 35B of the gripping portion. It has a second tapered end 22 away from the gripping portion 24, for example beveled.

[0102] The second tapered end 22 allows for more precise application of the product, in particular of the fibers 28 and effective guidance when handling the applicator 14 towards the body surface.

[0103] In the example illustrated by [Fig. 1], the product support portion 26 advantageously has a central recess 40 for receiving the retaining material 30, and lateral edges 42 extending along the lateral edges 37A, 37B of the product support portion 26.

[0104] The central bowl 40 opens here at the second end 22 between the lateral edges 42.

[0105] In an alternative (not shown), the upper surface of the product support portion 26 is devoid of relief up to its lateral edges 37A, 37B.

[0106] In the example shown in [Fig.1], the first ends 20 and the gripping portions 24 are aligned along a transverse axis BB', perpendicular to the longitudinal axis A-A'. Thus, the compactness of the applicator 14 chain 12 is maximized.

[0107] However, since the product support portions 26 of the adjacent applicators 14 are narrower than the product support portions 26, they define an intermediate guard space 31 between them, which prevents contact between the adjacent fiber bundles 27 of adjacent applicators 14. This guard space 31 extends from the gripping portion 24 to the second end 22. It has a minimum width, measured parallel to the upper transverse axis B-B', of 50% of the width of a product support portion 26 of an adjacent applicator 14.

[0108] The retaining material 30 is advantageously configured so that the adhesion force FA of the product, in particular of the fibers 28 of the bundle 27 to the adhesive composition, is strictly greater than the retention force FR of the product on the retaining material 30.

[0109] Preferably, the adhesion force FA is greater than 1.5 times the retention force FR, in particular greater than 2 times the retention force FR, especially when the product is in the form of fibers.

[0110] This ensures that the fibers detach properly from the applicator 14. The force FE to be exerted on the fibers to release them from the applicator 14 is advantageously less than or equal to 20 mN, in particular less than or equal to 15 mN.

[0111] The retaining material 30 is, for example, an adhesive as defined above for the adhesive composition, but offering a product retention force lower than that of the adhesive composition.

[0112] Alternatively, the retaining material 30 is sensitive to a stimulus, such as a thermal or chemical stimulus, to modify the adhesion force of the product to the applicator. Examples of such retaining materials are given in FR3039368 for a product made of fibers.

[0113] Preferably, the product, in particular the fibers 28, separates completely from the applicator 14 upon contact with the adhesive composition.

[0114] Alternatively, as described in FR3039368, the fibers 28 have a frangible zone which breaks when the free end of the fiber is applied to the adhesive composition, separating the fiber into a region applied to the adhesive composition and a region remaining on the applicator 14.

[0115] In the particular example shown in [Fig. 1], the retaining material 30 is disposed here in the central bowl 40, away from the lateral edges 42, so that the lateral edges 42 are free of product, in particular of fibers 28.

[0116] The fibers 28 protrude from the product support portion 26, away from the lateral edges, presenting a first end 50 received in the retaining material 30 to be linked to the product support portion 26 and a second free end 52 disposed away from the product support portion 26, perpendicular to a guiding surface defined by the product support portion 26.

[0117] In the example shown in [Fig.1], the fibers 28 form a bundle 27 with a substantially parallelepiped shape.

[0118] The fiber density 28 is for example greater than 500 fibers per cm2, and is in particular between 700 fibers and 2800 fibers per cm2, in particular when the fibers have a count between 40 and 50 decitex and a length between 4 mm and 6 mm, and in particular a count of 44 decitex and a length of 5 mm.

[0119] The density of the fibers 28 depends on both the fiber count and their length, and more specifically on the ratio between their length and their count (length / count). Indeed, the finer and / or longer the fibers, the more they tend to bend and thus individually occupy a larger surface area than they would if they were straighter, thereby reducing the fiber density.

[0120] Thus, the fiber density 28 can be greater than the values ​​indicated in the particular example above, when the fiber length / fiber count ratio is lower than in this example, due to a fiber count value higher than those indicated in this example for the same fiber length value or a fiber length value lower than those indicated in this example for the same fiber count value.

[0121] Similarly, the fiber density 28 may be lower than the values ​​indicated in the particular example above, when the fiber length / fiber count ratio is higher than in that example, due to a fiber length value greater than those indicated in that example for the same fiber count value or a fiber count value lower than those indicated in that example for the same fiber length value.

[0122] The fiber density is not necessarily homogeneous and can be variable to better reproduce a natural implantation. The gap between two adjacent fibers on the applicator is preferably between 150 microns and 250 microns.

[0123] The fibers of the bundle 27 of fibers 28 are each 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 cross-section of the fiber is inscribed. In particular, the L / D ratio (or aspect ratio) is chosen in the range from 3.5 to 2500, preferably from 5 to 15,500, and better from 5 to 150.

[0124] In particular, their ends are blunt and / or polished to avoid injury.

[0125] For example, the fibers 28 have a length ranging, for example, from 0.5 mm to 20 mm from their first end 50 to their second end 52. In particular, their cross-section is between 20 pm and 120 pm, especially between 30 pm and 100 pm, even better between 40 pm and 80 pm.

[0126] The weight or count of the fibers 28 is often given in denier or decitex and represents the weight in grams per 9 km of yarn. The fibers 28, for example, have a count chosen from the range of 0.1 denier to 100 denier, preferably from 1 denier to 70 denier and better from 5 denier to 60 denier.

[0127] The fibers 28 are arranged in the form of a bundle 27 of parallel fibers on the applicator 14. The fibers 28 are advantageously arranged on the applicator 14 by being oriented perpendicular to the product support portion 26 or by making an angle with the normal to the product support portion 26, in particular an angle of up to 45°.

[0128] Advantageously, all the fibers 28 extend substantially parallel to each other, along an elevation axis CC' perpendicular longitudinally, and to an axis BB' transversely.

[0129] The fibers of the bundle 27 of fibers 28 are, for example, fibers of synthetic or natural, mineral or organic origin. They are short or long, single or arranged, for example braided, hollow or solid. Their shape is particularly of circular or polygonal section (square, hexagonal or octagonal) depending on the specific application envisaged.

[0130] Fibres 28 include, in particular, silk, cotton, wool, linen, cellulose fibre, extracted for example from wood, vegetables or algae, rayon fibre, polyamide (Nylon(c)), viscose, acetate fibre, in particular rayon acetate, acrylic polymer, in particular polymethyl methacrylate or poly 2-hydroxyethyl methacrylate, polyolefin, in particular polyethylene or polypropylene, glass, silica, carbon, in particular in the form of graphite, polytetrafluoroethylene (such as Teflone), insoluble collagen, polyesters, polyvinyl chloride or vinylidene, polyvinyl alcohol, polyacrylonitrile, chitosan, polyurethane, polyethylene phthalate, fibre formed from a mixture of polymers such as those mentioned above, such as polyamide / polyester fibre.

[0131] Preferably, the fibers 28 are polyamide 6-6 fibers.

[0132] Furthermore, the fibres 28 are advantageously treated on the surface, in particular coated with a protective layer or intended to give them a colour.

[0133] Flame-retardant acrylic fibers of the "Kanekalon" brand may be used. Examples of such fibers are those marketed under the reference Minkeprops SKINTEX Flock ref 590502. Alternatively, polyamide and / or cellulosic fibers such as viscose (or rayon) fibers may be used.

[0134] The bundle 27 of fibers 28 is formed for example of identical fibers or as a variant of a mixture of fibers which differ from each other in length, section, material, shape, and / or color.

[0135] The use of 28 different lengths of fibers has the advantage of giving more naturalness.

[0136] The bundle 27 of fibers 28 comprises, for example, a mixture of colors, in particular a mixture of grey and white or black and white fibers.

[0137] Thus, the 28 fibers are configured to treat the hairline, eyebrows, beard, or scalp. It is possible to create various densities, ranging from low density, suitable for filling in or replicating thinning hair, to denser hair. It is possible to create the effect of sparse beards, the appearance of which can give a particularly aesthetically pleasing, youthful look. It is also possible to reproduce densities close to natural densities (approximately 200 µm between hairs), the advantage of which is that the addition of the 28 fibers is undetectable from near or far. It is possible to reproduce densities higher than natural densities to create bushy effects or to conceal skin irregularities.

[0138] Furthermore, at least two applicators 14 of the same string 12 can carry products, in particular fibres, of different characteristics, for example in terms of length, section, material, shape, and / or colour.

[0139] As indicated above, the adjacent applicators 14 are connected in pairs by the frangible links 16. In the example shown in [Fig.1], the frangible links 16 extend along the lateral edges 35A, 35B of each gripping portion 24, parallel to the longitudinal axis A-A'.

[0140] The frangible bonds 16 are for example formed by lines of lesser thickness, grooves, perforating cuts in dotted lines, or continuous cuts in mid-layer in particular when the applicator 14 is formed of one or more layers of cellulosic materials.

[0141] Thus, each applicator 14 is easily detachable, by tearing the frangible link 16 along the lateral edge 35A, 35B of the gripping portion 24, by grasping the gripping portion 24 between the fingers of a user.

[0142] With reference to figures 2 and 3, the case 18 comprises a base 60, a flap 62, intended to be moved relative to the base 60 between the closed and open configurations, and a rim 64 connecting the base 60 to the flap 62.

[0143] The case 18 further advantageously includes a step 66 projecting from the bottom 60.

[0144] The bottom 60 delimits between the rim 64 and the step 66, a housing 68 for receiving the string 12 of applicators 14.

[0145] The rim 64 has a height greater than the sum of the height of the product support portion 26 and the height of the product, in particular the fibers. It is connected to the base 60 by a first linear hinge 70. It is connected to the flap 62 by a second linear hinge 62, its height being defined by the distance separating the hinges 70 and 72.

[0146] The flap 62 is operable by the user between the closed configuration of the housing 18, visible in [Fig.2], in which it covers the housing 68 by resting on the step 66, the rim 64 being arranged perpendicular to the bottom 60, and the open configuration of the housing 18, shown in [Fig.3], in which the flap 62 has been moved away from the bottom 60 and access to the housing 68 is possible.

[0147] The string 12 of applicators 14 is advantageously made from a sheet of material, in particular a sheet of cellulosic material as described above. The applicators 14 are formed by cutting all the way through the sheet along the periphery of each applicator 14, with the exception of the frangible links 16 which are formed by partial cutting, by dotted perforating cuts, by grooving, and / or by continuous mid-layer cutting, as described above.

[0148] Similarly, the retaining material 30 is applied to the product support portions 26, advantageously leaving the periphery of the product support portion 26 devoid of retaining material 30 along the lateral edges 37A, 37B of the product support portion 26.

[0149] Of the product, in particular fibers 28, are then deposited on the retaining material 30, to form bundles 27 of fibers 28 which are held in protrusion relative to each portion of product support 26 by the retaining material 30.

[0150] Similarly, the housing 18, when present, can be manufactured by cutting at its periphery and by making hinges 70, 72 to form respectively the step 66, the bottom 60, the rim 64 and the flap 62.

[0151] During support and storage, the string 12 of applicators 14 is kept housed in the housing 68 of the casing, the casing 18 being kept in its closed configuration.

[0152] When the user wishes to apply the product, in particular fibers 28, to a body surface, he opens the container 19 for receiving the adhesive composition and applies the adhesive composition 19 to the body surface he wishes to cover with fibers 28, as described above.

[0153] Then, he maneuvers the housing 18 to move it from the closed configuration to the open configuration.

[0154] He then grasps an applicator 14 of the string 12 located at one end of the string 12. Advantageously, he pinches the gripping portion 24 of this applicator 14 between the fingers of one hand, and pinches the gripping portion 14 of the adjacent applicator 14 between the fingers of a second hand. Then, he breaks the frangible connection 16 by separating the applicator 14 that he wishes to detach from the adjacent applicator 14.

[0155] The presence of a significant guard space 31 between adjacent applicators 14 avoids the risk of disorganization of the bundles 27 of fibers 28 not only during the transport and storage of the applicators 14 in their housing 18, but also during the handling to break the frangible link 16.

[0156] Then, the user moves the applicator 14 which he has just released from the string 12 towards the body surface by holding it by the gripping portion 26. He brings the product support portion 26 and the protruding product, in particular the protruding fibers 28, closer to the product support portion 26 of the body surface until the product, in particular the free ends 52 of the fibers 28, are in contact with the adhesive composition deposited on the body surface.

[0157] The user then moves the product support portion 26 away from the body surface. Since the adhesion force FA of the product, in particular of the fibers 28, on the adhesive composition is greater than the retention force FR of the product, in particular of the fibers 28 on the retention material 30, the product remains bonded to the The adhesive composition adheres to the body surface and detaches from the product support portion 26 without significant alteration of its structure. The product, particularly in the form of fibers 28, therefore remains organized during transport, storage, handling of each applicator 14, and application to the body surface, resulting in a highly satisfactory aesthetic outcome.

[0158] In addition, the applicators 14 are very practical to use, while also being cost-effective. They are easily recyclable and produce little waste, especially when made of cellulosic material, as described above.

[0159] In one variant, shown in [Fig.4], the first ends 20 and the gripping portions 24 of the applicators 14 extend along a curved line, for example along a portion of an arc of a circle or ellipse.

[0160] The applicators 14 of the string 12 are thus arranged in a fan shape, with their second ends 22 further apart from each other than their first ends 20.

[0161] The manufacture and operation of this string 12 of applicators 14 is otherwise similar to that of the string shown in [Fig. 1]. The risk of contact between the fibers 28 of the adjacent applicators 14 is further reduced in this type of string 12, since the guard spaces 31 have a width that increases from the gripping portions 24 towards the second ends 22.

[0162] In the variant shown in [Fig. 5], the plurality of applicators 14 comprises at least two applicators 14A, 14B with product support portions 26 having different areas from one applicator 14A, 14B to the other and / or bundles 27 of fibers 28 with different areas from one applicator 14A, 14B to the other,

[0163] For example, at least one applicator 14A has a large portion of product support 26, covered by a large bundle 27 of fibers 28, advantageously for application over a large area and at least one applicator 14B has a refined portion of product support 26, covered by a refined bundle 27 of fibers 28, for precise application over a restricted area.

[0164] In the variant shown in [Fig.6], the plurality of applicators 14 includes at least one applicator 14C, 14D having the shape of a body surface covered with keratin fibers on which the product, in particular fibers 28, is to be deposited, in particular an eyebrow shape.

[0165] For example, at least one first applicator 14C has a product support portion 26 in the shape of eyebrows of a first size and / or according to a first template and at least one second applicator 14D has a product support portion 26 in the shape of eyebrows of a second size different from the first size and / or according to a second template different from the first template.

Claims

Demands

1. Cosmetic product application assembly (10), in particular of fibers, comprising a plurality of applicators (14), each applicator (14) having a gripping portion (24) and a product support portion (26) bearing protruding product, in particular a plurality of protruding fibers (28), and a retaining material (30) detachably holding the product on the product support portion (26), characterized in that adjacent applicators (14) are connected to each other by frangible links (16) located away from the product support portions (26), the product support portions (26) of adjacent applicators (14) delimiting between them a guard space (31).

2. Assembly (10) according to claim 1, wherein each applicator (14) extends elongatedly along a longitudinal axis (A-A') between a first end (20) defined by the gripping portion (24), and a second end (22) defined by the product support portion (26), the second ends (22) of the adjacent applicators (14) being separated transversely with respect to the longitudinal axis (A-A').

3. Assembly (10) according to claim 2, wherein the second end (22) of at least one applicator (14) is tapered.

4. Assembly (10) according to any one of claims 2 to 3, wherein the first ends (20) are aligned along a transverse axis (B-B') to the longitudinal axis.

5. Assembly (10) according to any one of claims 1 to 3, wherein the first ends (20) are located on a nonlinear curve, in particular an arc of a circle or ellipse, the second ends (22) of adjacent applicators (14) being further apart than the first ends (20) of adjacent applicators (14).

6. Assembly (10) according to any one of the preceding claims, wherein the gripping portion (24) of at least one applicator (14) has a maximum width greater than the maximum width of the product support portion (26) of at least one applicator (14).

7. Assembly (10) according to any one of the preceding claims, wherein the length of each support portion of product (26) of at least one applicator (14) is greater than the length of each gripping portion (24) of at least one applicator (14).

8. Assembly (10) according to any one of the preceding claims, wherein the product support portion (26) comprises a central cup (40) receiving the retaining material (30) and the product, the product support portion (26) comprising a rim (42) projecting at least on either side of the central cup (40), the rim (42) being devoid of product, or wherein the product support portion (26) is devoid of relief up to its lateral edges (37A, 37B).

9. Assembly (10) according to any one of the preceding claims, wherein each applicator (14) is formed of at least one layer of cellulosic material, in particular a layer of cardboard.

10. Assembly (10) according to claim 9, wherein each applicator (14) comprises a first lower layer (32) of cellulosic material, defining grooves having an amplitude (FI) and a waviness period (PI), and a second upper layer (34) of cellulosic material, supporting the product, the second upper layer (34) having grooves having an amplitude FS less than the amplitude (FI) of the grooves of the first lower layer (32) and / or having a waviness period (PS) less than the waviness period (PI) of the grooves of the first lower layer (32).

11. Assembly (10) according to any one of the preceding claims, wherein the frangible bond (16) is formed of lines of lesser thickness, grooves, dashed perforating cuts, or continuous mid-layer cuts.

12. Assembly (10) according to any one of the preceding claims, comprising a housing (18) defining a base (60) receiving the plurality of applicators (14).

13. Assembly (10) according to claim 12, wherein the housing comprises a flap (62) movable between a closed configuration of the housing (18), covering the products of the applicators (14), and an open configuration providing access to the applicators (14), the flap (62) being connected to the base (60) by a rim (64) having a height greater than the combined height of the product and the product support portion (26), the flap (22) being positioned completely away from the product in the closed configuration.

14. Assembly (10) according to claim 13, wherein the case (18) has a step (66), delimiting with the bottom (60) a housing (68) for receiving the applicators (14), the flap (62) applying to the step (66) in the closed configuration, the height of the step (66) being greater than the cumulative height of the product and the portion of product support (26), the flap (22) being disposed totally away from the product in the closed configuration.

15. Assembly (10) according to any one of the preceding claims wherein the plurality of applicators (14) comprises at least two applicators (14A, 14B) with product carrier portions (26) having different areas from one applicator (14A, 14B) to another and / or products, in particular bundles (27) of fibers (28), of different areas from one applicator (14A, 14B) to another, or wherein the plurality of applicators (14) comprises at least one applicator (14C, 14D) having the shape of a body surface covered with keratin fibers onto which the product is to be applied, in particular an eyebrow shape.

16. A method for applying a cosmetic product, in particular fibers (28) to a body surface comprising the following steps: - providing a user with an assembly (10) according to any one of the preceding claims; - application, by a user, of an adhesive composition to the body surface; - detachment by a user of an applicator (14) from the plurality of applicators (14) by breaking the frangible bond (16); - grasping by the user of the gripping portion (24), and bringing the product support portion (26) into contact with the adhesive composition on the body surface to bring the product, in particular the free ends (52) of fibers (28) into contact with the adhesive composition; - detachment of the product from the product support portion (26) by moving the applicator (14) away from the body surface.

Images