Improved cosmetic product application device

Abstract

Improved Cosmetic Product Application Device The invention relates to a cosmetic product application device (10), comprising an application head (12), the application head (12) comprising: - a cosmetic product loading zone (22) comprising a cavity (40) formed in the application head (12) and opening to the outside of the application head (12) by at least one orifice, the application head (12) comprising a material having a thermal effusivity greater than that of the target surface, the target surface being the skin of a user, and the application head (12) comprising asperities (200). Figure for the abstract: Fig. 1.

Description

Title of the invention: Improved cosmetic product application device Technical field

[0001] The invention relates to the field of cosmetic applicators. The invention relates more particularly to a device for applying a cosmetic product such as a cosmetic cream or gel, to a target surface such as the skin of a user. Prior art

[0002] The expression "cosmetic product" means any substance or preparation referred to in Article L658-1 of the Public Health Code, that is to say in particular a substance or preparation intended to be placed in contact with the various superficial parts of the human body in order to clean them, protect them, keep them in good condition, modify their appearance, perfume them or correct their odor.

[0003] The target surface may consist of any superficial part of a human body such as the skin, hair or even nails.

[0004] Typically, cosmetic applicators comprise a handle and a cosmetic application area. The cosmetic application area may be a tuft of bristles or a sponge, for example. This application area is loaded with product to be applied to a user's skin, then applied to the skin in order to transfer the product to the skin. Finally, this application area allows the product to be distributed over the skin.

[0005] A disadvantage of this type of applicator is their lack of precision both when loading the product and when transferring it to the skin. Indeed, tufts of hair like sponges are difficult to load with product uniformly, which results in uneven product deposition on the skin. In addition, these application devices retain some of the product, which leads to product waste and limits the application efficiency. This type of applicator is also difficult to clean.

[0006] Alternatively, it is known to use an application area in the form of a plastic or metal element. However, plastic or metal application areas have difficulty retaining the product to be applied. Loading is therefore difficult.

[0007] Another disadvantage of this type of applicator concerns wringing, in particular wringing of the handle of the applicator when the applicator is removed from a cosmetic product reservoir. The cosmetic product reservoir may thus comprise a means configured to wring the handle, generally called a wringer and arranged in tank outlet. The role of the wringer is to wring the handle, which is immersed in the product reservoir. The handle is wrung to keep it as clean as possible, but above all to prevent the cosmetic product retained on the handle from leaking during application. The problem with the wringer is that it also wrings the application area, which then ends up with a low level of product.

[0008] Furthermore, the functionalities provided by these types of applicators are limited. Statement of the invention

[0009] The invention aims to remedy all or part of the aforementioned drawbacks by proposing a device for applying a cosmetic product comprising an application head, the application head comprising:

[0010] - a cosmetic product loading area comprising a cavity formed in the application head and opening outside the application head through at least one orifice, the application head comprising asperities.

[0011] For example, the application head comprises a material whose thermal effusivity is greater than that of the target surface, the target surface being the skin of a user.

[0012] By a cavity is meant at least one cavity, that is to say one or more cavities, for example a single cavity or a plurality of cavities.

[0013] By cavity formed in the application head is meant a cavity formed inside the application head. The cavity may take for example the form of a recess, a hollow, a hole in the application head which opens to the outside of the application head through at least one orifice.

[0014] By at least one orifice, it is meant that each cavity can open to the outside of the application head through one or more orifice(s), for example through a single orifice or through a plurality of orifices.

[0015] The cavity forms a housing in the application head configured to receive and retain the cosmetic product in the application head.

[0016] The cavity allows the application device and in particular the application head to be loaded with cosmetic product to be applied to the target surface when the application device is immersed in a reservoir of cosmetic product.

[0017] The restitution of the cosmetic product on the target surface can be done either by capillarity or by tapping on the skin.

[0018] The application head according to the present invention makes it possible to take a sufficient quantity of the cosmetic product to be applied to the target surface when the application device is immersed in a reservoir of cosmetic product. The product can be taken and held in the cavity of the application head, providing an improved means of retaining the cosmetic product compared to the application devices of the prior art.

[0019] Thus the loading zone makes it possible to take a cosmetic product and transfer it to a target surface such as the skin of a user.

[0020] By asperity is meant a part of a surface, for example of a wall, for example of a side wall of the application head which is rough or a projecting part, such as a protrusion, for example a protuberance of a surface, for example of a wall, for example of a side wall of the application head.

[0021] The roughnesses make it possible to add new functionalities to the application device by also allowing reinforced massage of the target surface or exfoliation of the target surface.

[0022] According to other characteristics of the invention, the device of the invention comprises one or more of the following optional characteristics, considered alone or in all possible combinations.

[0023] According to one characteristic, the application head is manufactured by additive manufacturing also called 3D printing.

[0024] The 3D printing manufacturing process offers the application head greater freedom of shape and arrangement than conventional manufacturing processes (molding, machining, etc.) without expensive and time-consuming tools or molds to manufacture. The application head can be freely designed according to the desired gesture or the cosmetic product used, without constraints due to the printing manufacturing process.

[0025] According to one characteristic, the application head comprises an area for applying the cosmetic product loaded onto the loading area, onto a target surface such as the skin of a user, the loading area and / or the application area comprising the roughness.

[0026] For example, the loading area and the application area are distinct.

[0027] The application area allows the product to be distributed over the target surface, for example by spreading it evenly.

[0028] According to one characteristic, the loading zone comprises asperities, for example the loading zone only comprises asperities.

[0029] According to one characteristic, the application zone comprises asperities, for example the application zone only comprises asperities.

[0030] According to one characteristic, the loading zone and the application zone comprise asperities.

[0031] According to one characteristic, the application head comprises a wall, for example a side wall and the asperities are formed in a single piece with the wall, for example the side wall of the application head.

[0032] The side wall of the application head comprises at least two side faces.

[0033] According to one characteristic, each asperity can be a protruding part of a surface, for example of a wall, for example of a side wall of the application head.

[0034] According to one characteristic, the asperities are ribs, for example rectilinear, or protrusions, for example lugs.

[0035] For example, the asperities may have a thickness of between 0.1 mm and 1 mm.

[0036] This configuration allows, among other things, a reinforced massage of the target surface.

[0037] According to one characteristic, the asperities are rough surfaces, for example of the application head, for example of the wall of the application head.

[0038] Roughness is a characteristic of the condition of a surface.

[0039] For example, the application head has one or more rough surfaces.

[0040] Roughness can be measured in Ra which can be calculated in pm.

[0041] For example, the application head may have one or more rough surfaces whose value may be between 7 μm and 100 μm.

[0042] This configuration allows the application device to be able to exfoliate the target surface.

[0043] According to one characteristic, the application head is hollow, the hollow of the application head forming the cavity of the loading zone.

[0044] For example, the loading zone comprises a single cavity formed by the hollow of the application head and opening outside the application head through at least one orifice.

[0045] For example, the application head comprises an upper end, a lower end and a side wall connecting the ends, delimiting the hollow of the application head.

[0046] For example, said at least one orifice is formed in the side wall so as to create a passage between the exterior of the application head and the cavity of the application head.

[0047] The hollow application head further allows the weight of the application device to be reduced and further provides a lightweight application device.

[0048] According to one characteristic, the cavity opens outside the application head through a plurality of orifices.

[0049] According to one characteristic, the orifices are arranged on a first lateral face of the application head only and the application zone corresponds to a second lateral face of the application head. Thus the loading zone can for example correspond to the cavity and to the first lateral face of the application head on which said at least one orifice is arranged.

[0050] First lateral face and second lateral face are understood to mean lateral faces of the side wall of the application head.

[0051] For example, the surface area of ​​the first lateral face, on which the orifices are arranged, is greater than the surface area of ​​the second lateral face.

[0052] By surface of the first lateral face is meant the surface comprising the surface of the first lateral face including the orifices and / or the part of the surface of the convex envelope, of the head or of the lateral wall, corresponding to the first lateral face.

[0053] For example, the first side face includes the asperities. For example, the first side face only includes the asperities. Thus, the loading area only includes the asperities.

[0054] For example, the second lateral face includes the asperities. For example, the second lateral face only includes the asperities. Thus the application area only includes the asperities.

[0055] For example, the first side face and the second side face comprise the asperities. Thus the loading zone and the application zone comprise the asperities.

[0056] According to one characteristic, the orifices are arranged on a first lateral face and on a third lateral face of the application head, the first lateral face and the third lateral face being opposite each other and the application zone corresponds to a second lateral face and a fourth lateral face of the application head. The second lateral face and the fourth lateral face are arranged between the first lateral face and the third lateral face of the application head. Thus the loading zone can for example correspond to the cavity and to the first and third lateral faces of the application head on which the orifices are arranged.

[0057] First lateral face, second lateral face, third lateral face and fourth lateral face are understood to mean lateral faces of the side wall of the application head.

[0058] For example, the first side face and / or the third face comprise the asperities. For example, only the first side face and / or the third face comprise the asperities. Thus, only the loading area comprises the asperities.

[0059] For example, the second side face and / or the fourth side face comprise the asperities. For example, only the second side face and / or the fourth side face comprise the asperities. Thus the application area only comprises the asperities.

[0060] For example, the first side face and the second side face and the third side face and the fourth side face comprise the asperities. Thus the loading zone and the application zone comprise the asperities.

[0061] According to one feature, the loading zone extends between the upper end and the lower end of the application head only.

[0062] For example, the upper end and / or the lower end is / are devoid of an orifice.

[0063] According to one characteristic, the loading zone and the application zone are distinct.

[0064] According to one characteristic, the application head comprises a material whose thermal effusivity is greater than that of the target surface and / or greater than that of the handle, the target surface being the skin of a user.

[0065] Thermal Effusivity is the capacity of a material to absorb calories and allows a sensation of cold to be created upon application.

[0066] The higher its value, the more the material is able to absorb calories without heating up, and vice versa.

[0067] The intrinsic Thermal Effusivity value of a material is calculated as follows:

[0068] , Ef =

[0069] where k is the heat capacity in Wm-1.°K-1; is the density in kg / m3 ; it is the thermal conductivity in J.kg-1.°K-1.

[0070] Thus, in contact with the skin, while the parts are all at the same temperature, a steel part (whose Effusivity is of the order of 14,000 JK-lm-2.sl / 2) will give a sensation of cold on the skin (Effusivity of 400 JK-lm-2.sl / 2), while a wooden part (Effusivity also of the order of 400 JK-lm-2.sl / 2) will give a neutral sensation.

[0071] This heat transfer gives the skin a sensation of cold that is all the more intense as the Thermal Effusivity is high.

[0072] According to one characteristic, the application head comprises a material whose thermal effusivity is greater than or equal to 7000 JK-lm-2.sl / 2, for example greater than or equal to 10000 JK-lm-2.sl / 2 and / or is less than or equal to 18000 JK-lm-2.sl / 2, for example less than or equal to 16000 JK-lm-2.sl / 2, for example less than or equal to 14000 JK-lm-2.sl / 2.

[0073] Thus the application head is configured to provide a sensation of cold on the target surface.

[0074] For example, the application area and / or the loading area comprises, for example, is made of a material whose thermal effusivity is greater than that of the target surface and / or greater than that of the handle, the target surface being the skin of a user.

[0075] For example, the asperities comprise, for example are made of, a material whose thermal effusivity is greater than that of the target surface and / or greater than that of the handle, the target surface being a user's skin.

[0076] For example, the application head is made of a material whose thermal effusivity is greater than that of the target surface and / or greater than that of the handle, the target surface being the skin of a user.

[0077] According to one characteristic, the application head comprises a metallic material. For example, the application head is made of metal. Thus, the application head and in particular the application area makes it possible to decongest the target surface.

[0078] For example, the application head is made of zinc or aluminum alloy which can be covered with an anti-corrosion material.

[0079] Metal is a relatively neutral material with respect to cosmetic products and the skin.

[0080] According to one characteristic, the application head is made of steel, for example stainless steel.

[0081] According to one characteristic, the application device comprises a handle connected to the application head, the handle being made up of one or more parts.

[0082] According to one characteristic, the handle is a rod, for example a flexible rod.

[0083] According to one characteristic, the application device comprises an insert arranged on the application head, the insert comprising a material different from the material of the application head.

[0084] For example, the application head comprises a first material and the insert comprises a second material different from the first material. The first material is a material whose thermal effusivity is greater than that of the target surface, the target surface being the skin of a user.

[0085] For example, the first material has a thermal effusivity greater than that of the material(s) constituting the insert which can be brought into contact with the target surface.

[0086] For example, the second material, i.e. the insert material, comprises fibers or a sponge.

[0087] For example, the insert is made of plastic flocked with fibers.

[0088] For example, the insert is made of sponge.

[0089] For example, the insert is made of silk.

[0090] For example, the insert is made of felt.

[0091] For example, the application head and the insert are connected by clipping, gluing, clamping, welding or even overmolding.

[0092] Thus, according to the present disclosure, the application device comprises the insert intended to allow the application device to apply the cosmetic product with more precision and the roughnesses allowing a massage and / or exfoliation of the target surface.

[0093] The invention also relates to an assembly comprising the device application as previously described and a cosmetic product reservoir.

[0094] The invention also relates to a method of using a cosmetic product application device as described above, comprising the following steps:

[0095] - Loading of cosmetic product on the loading area,

[0096] - Transfer of the cosmetic product onto the target surface,

[0097] - Distribution of the cosmetic product by spreading through the application area.

[0098] According to one characteristic, the step of transferring the cosmetic product is a point transfer step.

[0099] By "point transfer" is meant that the product is transferred to the target surface by tapping the application head on the target surface.

[0100] The invention also relates to a method of manufacturing a cosmetic product application device as previously described, the method comprising a step of manufacturing the application head by additive manufacturing in which a cavity is formed in the application head and opens to the outside of the application head through at least one orifice and in which asperities are formed on the application head.

[0101] Other characteristics and advantages of the present invention will appear on reading the description which follows and on examining the appended figures in which: Brief description of the drawings

[0102] [Fig-1] [Fig.l] is a schematic view of a first side of a device application of cosmetic product according to a first embodiment of the invention.

[0103] [Fig.2] [Fig.2] is a schematic view of a second side of the device of the [Fig.l].

[0104] [Fig.3] [Fig.3] is a schematic view of a third side of the device of the [Fig.l].

[0105] [Fig.4] [Fig.4] is a schematic longitudinal sectional view of the device application according to the invention.

[0106] [Fig.5] [Fig.5] is a schematic view of a variant of the first mode of rea lization.

[0107] [Fig.6] [Fig.6] is a schematic view of a variant of the first mode of rea lization of the invention.

[0108] [Fig.7] [Fig.7] is a schematic view of a variant of the first mode of rea lization of the invention.

[0109] [Fig.8] [Fig.8] is a schematic view of a variant of the first mode of rea- lization of the invention.

[0110] [Fig.9] [Fig.9] is a schematic view of a first side of an applicator according to a second embodiment.

[0111] [Fig. 10] [Fig. 10] is a schematic view of a second side of the applicator according to the second embodiment.

[0112] [Fig. 11] [Fig. 11] is a schematic view of an applicator according to a third embodiment.

[0113] [Fig. 12] [Fig. 12] is a schematic view of an assembly comprising the application device and a cosmetic product reservoir.

[0114] [Fig. 13] [Fig. 13] is a schematic longitudinal sectional view of an application device according to the invention.

[0115] [Fig. 14] [Fig. 14] is a schematic view of one side of an application device according to an alternative embodiment. Description of the embodiments

[0116] In the following description and in the claims, identical, similar or analogous components will be designated by the same reference numbers.

[0117] Figures 1 to 11 represent a device 10 for applying a cosmetic product comprising an application head 12 configured to apply a cosmetic product to a target surface such as the skin of a user.

[0118] The application head 12 may comprise an upper end 12A, a lower end 12B and a side wall 120 connecting the upper end 12A and the lower end 12B.

[0119] In the present disclosure, the upper end 12A, the lower end 12B and the side wall 120 are formed in one piece, that is to say in a single piece.

[0120] Figures 1 to 8 show that the cosmetic product application device 10 may comprise a handle 14.

[0121] As illustrated in [Fig.4], the handle 14 can be connected to the application head 12, for example by clipping.

[0122] For this purpose, the lower end 12B of the application head 12 may have an elongated shape and may be hollow, and the handle 14 may include a protuberance 16 at one of its ends, proximal to the application head 12.

[0123] The protuberance 16 is configured to fit by clipping into, i.e. inside, the lower end 12B of the application head.

[0124] More particularly, the application head 12 may comprise at least one internal shoulder 18 configured to cooperate with an external shoulder 20 of the protuberance 16.

[0125] The application head 12 may comprise a second internal shoulder 19 configured to cooperate with a second external shoulder 21 of the protuberance 16.

[0126] The invention is not limited to this exemplary embodiment. For example, the handle 14 could have a hollow end, and the lower end 12B could be configured to fit into the hollow end of the handle and include the protuberance at one of its ends.

[0127] According to another variant, the handle 14 can be connected to the application head 12, for example by screwing.

[0128] In the example shown, the handle 14 is made of a single piece. Alternatively, the handle 14 could comprise several pieces.

[0129] For example, the handle 14 may be a rod, for example a flexible rod.

[0130] The upper end 12A corresponds to the distal end of the handle 14 when the application head 12 is connected to the handle 14 and the lower end 12B corresponds to the proximal end of the handle 14 when the application head 12 is connected to the handle 14.

[0131] The application device 10 may comprise a closure element 15 (FIGS. 5 to 8) configured to close an outlet orifice of a reservoir (not shown) when the application device 10 is mounted on the reservoir. The reservoir may be a cosmetic product reservoir.

[0132] The closure element 15 may be a plug or cover fixed to the handle 14, for example by screwing, for example at one of the ends of the handle 14, distal to the application head 12.

[0133] The cap 15 is configured to be mounted on the reservoir so as to close the outlet orifice of the reservoir when the rest of the application device, i.e. the handle 14 and the application head 12, extends inside the reservoir.

[0134] An assembly 400 comprising the application device 10 and a reservoir 300 of cosmetic product is illustrated in [Fig. 12].

[0135] The application device 10 comprises the application head 12, the handle 14 and the cap 15.

[0136] The reservoir 300 comprises a body 350 delimiting an internal chamber comprising cosmetic product. The body 350 comprises a first closed end 352 and a second end 354, opposite the first end. The second end has a neck 356 comprising a cosmetic product outlet orifice.

[0137] In [Fig. 12], the application device 10 is mounted on the reservoir so that the application head 12 and the handle are immersed in the cosmetic product. The cap is screwed onto the neck 356 of the reservoir so as to close the outlet orifice of the cosmetic product.

[0138] The reservoir 300 may include a wringer 370 mounted within the neck 356 of the reservoir. The wringer is configured to wring the handle 14 when the application device 10 is removed from the reservoir 300.

[0139] As illustrated in the figures, the application head 12 may comprise a cosmetic product loading zone 22.

[0140] The loading zone 22 makes it possible to collect the cosmetic product and transfer it to a target surface such as the skin of a user.

[0141] In the present disclosure, the loading zone 22 comprises a cavity 40 formed in the application head 12.

[0142] The cavity 40 can open outside the application head 12 through at least one orifice 100.

[0143] By a cavity is meant at least one cavity, that is to say one or more cavities, for example a single cavity or a plurality of cavities.

[0144] By cavity formed in the application head is meant a cavity formed inside the application head. The cavity may take the form, for example, of a recess, a hole or a hollow in the application head which opens to the outside of the application head through at least one orifice.

[0145] The cavity 40 forms a housing in the application head configured to receive and retain the cosmetic product in the application head 12.

[0146] By at least one orifice, it is meant that each cavity can open to the outside of the cavity through one or more orifice(s), for example through a single orifice or through a plurality of orifices.

[0147] Said at least one orifice 100 allows passage of the cosmetic product between the exterior of the application head 12 and the cavity 40 of the application head 12.

[0148] For example, the cosmetic product may be removed by dipping the application head 12 into the cosmetic product reservoir so that the cavity is loaded with cosmetic product. When the application head 12 is removed from the reservoir, the loaded cosmetic product is stored in the loading area until it is discharged / transferred to the user's target surface. The configuration of the application device allows the cosmetic product to be retained within the application head 12 and not to be wrung out by the wringer 370 when the application device 10 is removed from the reservoir.

[0149] The loading zone 22 may be configured to point-transfer the cosmetic product onto the target surface.

[0150] In the present disclosure, the loading zone 22 may open only and / or extend only between the upper end 12A and the lower end 12B of the application head.

[0151] For example, the orifice(s) are arranged on the side wall 120 of the head 12 application only.

[0152] For example, the upper end 12A and / or the lower end 12B is / are devoid of an orifice through which the cavity opens, for example is / are devoid of an orifice.

[0153] As illustrated in Figures 1 to 10, the application head 12 may comprise an application zone 24, for example of the cosmetic product loaded onto the loading zone.

[0154] The application zone 24 also makes it possible to distribute the product over the target surface, by spreading it uniformly.

[0155] The application zone 24 may be formed by one of the lateral faces 124, 128 of the application head 12.

[0156] By one of the lateral faces 124, 128 of the application head 12 is meant one of the lateral faces 124, 128 of the side wall 120 of the application head.

[0157] The loading area 22 and the application area 24 may be configured to be separately contacted with the target surface.

[0158] For example, the loading zone 22 and the application zone 24 may be distinct (FIGS. 1 to 10).

[0159] The loading zone 22 and the application zone 24 may be configured to be brought into simultaneous contact with the target surface.

[0160] In the present disclosure, the application head 12 can be manufactured by additive manufacturing, also called 3D printing.

[0161] The application head 12 can thus be freely designed according to the desired gesture or even the cosmetic product used, and this, without constraint, due to the 3D printing manufacturing process.

[0162] The application head 12 can thus have various shapes.

[0163] The side wall 120 may for example have a general shape of a cylinder, a truncated cone cylinder, an oval, etc.

[0164] The upper end 12A may have, in a non-limiting manner, a rounded shape.

[0165] The lower end 12B may have, in a non-limiting manner, an elongated shape.

[0166] According to one embodiment, the application head 12 may be hollow.

[0167] By hollow application head 12 is meant that the application head 12 is empty inside. It is meant that the interior of the application head 12 is empty.

[0168] For example, the upper end 12A, the lower end 12B and the side wall 120 connecting the ends 12A, 12B delimit a hollow 50 in the application head 12 ([Fig.4]).

[0169] The hollow application head 12 makes it possible to reduce the weight of the application device. and further provide a lightweight application device.

[0170] In this example, the loading zone 22 may comprise a single cavity 40, the single cavity being formed by the hollow 50 of the application head 12 and opening outside the application head 12 through at least one orifice 100.

[0171] Said at least one orifice 100 may be formed in the application head 12 so as to create a passage 30 between the exterior of the application head and the cavity 50 of the application head ([Fig.4]).

[0172] For example, said at least one orifice 100 may be formed / arranged in the side wall 120 of the application head.

[0173] For example, the cavity 50 may open to the outside of the application head 12 through a single orifice.

[0174] For example, the cavity 50 may open to the outside of the application head 12 via a plurality of orifices (FIGS. 1 to 11).

[0175] As illustrated in FIGS. 5 to 8, the orifices 100 may for example be arranged on the same lateral face 122 of the lateral wall 120.

[0176] The orifices 100 may for example be arranged on a first lateral face 122 of the lateral wall 120 only and the application zone 24 may correspond to a second lateral face 124 of the lateral wall 120 (not visible in FIGS. 5 to 8).

[0177] The surface of the first lateral face 122 on which the orifices 100 are arranged may be identical to the surface of the second lateral face 124, greater than the surface of the second lateral face 124 or less.

[0178] It is understood that the surface of the first lateral face comprises the surface of the orifices.

[0179] As illustrated in Figures 1 to 3 and 9 and 10, the orifices 100 may be arranged on a first lateral face 122 and on a third lateral face 126, for example of the lateral wall 120, of the application head, the first lateral face 122 and the third lateral face 126 being opposite each other.

[0180] In this example, the application zone 24 may correspond to a second lateral face 124 and a fourth lateral face 128, for example of the side wall 120, of the application head. The second lateral face 124 and the fourth lateral face 128 are arranged respectively between the first lateral face 122 and the third lateral face 126 of the application head.

[0181] In the present disclosure, the orifice(s) may have various geometric shapes such as a triangular, rectangular, round, oval shape, etc.

[0182] When the cavity 40 opens to the outside of the application head via a plurality of orifices 100, these orifices 100 may have an identical or different shape.

[0183] In the present disclosure, the loading zone 22 and / or the application zone 24 may comprise asperities 200.

[0184] By asperity is meant a projecting part of a surface, for example of the side wall 120, of the application head 12.

[0185] The asperities 200 make it possible to add new functionalities to the application device and further allow for reinforced massage of the target surface or to allow exfoliation of the target surface.

[0186] For example, the asperities 200 are protrusions extending from an outer surface of the side wall 120.

[0187] For example, the asperities 200 are formed from a single piece, that is to say, made of the same material as the side wall 120 of the application head 12.

[0188] The asperities may extend only between the upper end 12A and the lower end 12B of the application head.

[0189] For example, the asperities are arranged on the side wall 120 of the application head 12 only.

[0190] For example, the upper end 12A and / or the lower end 12B is / are free of asperities.

[0191] The asperities 200 may have different shapes such as ribs 205 (figures 1 to 3 and 5 to 6), for example rectilinear, or lugs 210 ([Fig. 11]).

[0192] In the present disclosure, the asperities 200 may be formed in one piece with the application head 12, for example with the wall 120 of the application head 12 and in the same material.

[0193] The application zone 24 may comprise the asperities as illustrated in Figures 1 to 3 and 5 to 8.

[0194] The asperities 200 may be arranged over all or part of the application zone 24. For example, the asperities may be arranged on one of the faces or the faces, for example all the faces of the side wall 120 forming the application zone 24.

[0195] For example, the application zone 24 only may comprise the asperities 200.

[0196] A first example is illustrated in Figures 1 to 3.

[0197] In this example, the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may have, for example, a curved shape, for example so as to define, in combination with the upper end 12A, an oval shape. The side wall 120, for example the curved shape, may have a central portion, the central portion possibly having a diameter greater than the rest of the application head 12. In this embodiment, the cavity 40, for example the single cavity 40, opens to the outside of the application head via two orifices 100. Each orifice has a shape, for example an elongated shape in a direction connecting the lower end 12B and the upper end 12A, for example an oval shape. The two orifices 100 are arranged respectively on a first lateral face 122 ([Fig. 1]) and on a third lateral face 126 ([Fig. 2]) of the lateral wall 120 of the application head. For example, the first lateral wall 122 has one of the two orifices 100 and the third lateral wall 126 has the second orifice 100. In the example shown, the first lateral face 122 and the third lateral face 126 are opposite each other. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40 and are connected to each other. In this example, the application zone 24 may correspond to a second lateral face 124 and to a fourth lateral face 128 ([Fig. 1]), for example of the lateral wall 120, of the application head. The second lateral face 124 and the fourth lateral face 128 are arranged respectively between the first lateral face 122 and the third lateral face 126 of the application head.In this example, the asperities 200 may extend over only a portion of the application area 24. For example, the second lateral face 124 may have the asperities 200 and the fourth lateral face 128 may have a smooth external surface. This configuration allows a user to be able to choose between a portion of the application area, without asperities, for example smooth, so as to apply the cosmetic product to the target surface and another portion of the application area 24 comprising the asperities 200 so as to massage and / or exfoliate the target surface.

[0198] As illustrated in Figures 1 and 4, the application device 10 may comprise a reinforcing element 28, for example an arm extending into the hollow 50 of the application head 12 forming the cavity 40. The reinforcing element 28 extends for example from the upper end 12A to the lower end 12B.

[0199] Other examples in which the application zone 24, for example only, comprises the asperities 200 are illustrated in FIGS. 5 to 8.

[0200] In these examples, the side wall 120 of the application head may comprise only two side faces, for example a first side face 122 and a second side face 124. For example, the cavity 40 may open through the plurality of orifices arranged on the first side face 122 only and the application zone 24 may correspond to the second side face 124 (not visible in the figures). The second side face 124 is for example opposite the first side face 122.

[0201] In the example illustrated in [Fig.5], the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may have a generally cylindrical shape. In this embodiment, the cavity 40, for example the single cavity 40 (not visible) opens to the outside of the application head via a plurality of orifices 100. The plurality of orifices is arranged on a first lateral face 122 of the side wall 120 of the application head only. The first lateral face 122 has a first central orifice 100 of flared shape towards the lower end 12B, for example triangular. The first central orifice 100 may be arranged between several other orifices, for example four other orifices 100 (two of the four orifices are visible in [Fig.5]), for example rectangular in shape. Two of the other orifices 100, for example rectangular, may be arranged on each side of the rectangular orifice 100. The orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40. The application zone 24 corresponds to the second lateral face 124 of the application head comprising the asperities (not visible). In this variant embodiment, the surface area of ​​the first lateral face 122 which has the orifices 100 may be greater than the surface area of ​​the second lateral face 124 forming the application zone 24 and comprising the asperities 200.

[0202] In the example illustrated in [Fig.6], the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may have, for example, a frustoconical cylindrical shape with, for example, a decreasing section from the upper end 12A to the lower end 12B. In this embodiment, the cavity 40, for example the single cavity 40, opens to the outside of the application head via a plurality of orifices 100. The plurality of orifices is arranged on a first lateral face 122 of the side wall 120 of the application head only. The first lateral face 122 has orifices, for example eight orifices, of rounded shape. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40.The application zone 24 corresponds to a second lateral face 124 of the side wall 120 comprising the asperities 200 (not visible). In this variant embodiment, the surface of the first lateral face 122 which has the orifices 100 may be identical to the surface of the second lateral face 124 forming the application zone 24 and comprising the asperities 200.

[0203] As illustrated in [Fig.7], the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may for example have an oval shape. In this embodiment, the cavity 40, for example the single cavity 40, opens to the outside of the application head through a plurality of orifices 100. The plurality of orifices is arranged on a first lateral face 122 of the side wall 120 of the application head. The first lateral face 122 has a plurality of orifices 100 of triangular shape, one of the edges of which is rounded. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40. The application zone 24 corresponds to a second lateral face 124 of the lateral wall comprising the asperities 200 (not visible). In this variant embodiment, the surface of the first lateral face 122 which has the orifices 100 may be greater than the surface of the second lateral face 124 forming the application zone 24 and comprising the asperities 200.

[0204] As illustrated in [Fig.8], the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may for example have an oval shape, the central portion of which may have a diameter greater than the rest of the application head 12. In this embodiment, the cavity 40, for example the single cavity 40, opens to the outside of the application head through a plurality of orifices 100. The plurality of orifices is arranged on a first lateral face 122 of the side wall 120 of the application head only.The first lateral face 122 has the plurality of orifices 100 having an elongated shape, for example an oval or diamond shape, distributed parallel to each other and a plurality of orifices of flared shape, for example flared in the direction and sense defined from the lower end 12B towards the upper end 12A, for example triangular, each arranged above and between each of the orifices of oval or diamond shape. The orifices of triangular shape are for example proximal to the upper end 12A of the application head 12. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40. The application zone 24 corresponds to a second lateral face 124 of the side wall 120 comprising the asperities 200 (not visible).In this variant embodiment, the surface area of ​​the first lateral face 122 which has the orifices 100 may be greater than the surface area of ​​the second lateral face 124 forming the application zone 24 and comprising the asperities.

[0205] The loading zone 22 may comprise the asperities 200.

[0206] The asperities 200 can be arranged on one of the faces or on the faces, for example for example all the faces of the side wall 120 on which the orifices 100 are arranged.

[0207] An example is illustrated in Figures 9 and 10.

[0208] In this example, the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may for example have a curved shape, for example so as to define in combination with the upper end 12A an oval shape. The side wall 120, for example the curved shape, may have a central portion, the central portion possibly having a diameter greater than the rest of the application head 12.

[0209] In this example, the cavity 40, for example the single cavity 40, opens to the outside of the application head via two groups of orifices 100. The two groups of orifices 100 are arranged respectively on a first lateral face 122 and on a third lateral face 126 ([Fig.9]) of the lateral wall 120 of the application head. For example, the first lateral wall 122 has one of the two groups of orifices 100 and the third lateral wall 126 has the second group of orifices 100.

[0210] In the example shown, the first lateral face 122 and the third lateral face 126 are opposite each other. Each group of orifices has several orifices of shape, for example elongated, for example rectangular, for example rectangular with rounded tops, and arranged one below the other in a direction connecting the lower end 12B and the upper end 12A.

[0211] For example, each group of orifices comprises a plurality of orifices, for example at least four orifices, for example exactly four orifices, arranged one below the other in the direction connecting the lower end 12B and the upper end 12A. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40 and are connected to each other, for example via the cavity.

[0212] In this example, the first lateral face 122 and the third lateral face 126 comprise the asperities 200. For example, the first lateral face 122 and the third lateral face 126 only may comprise the asperities 200. The asperities 200 may for example be arranged on the portions of the lateral wall 120 arranged between the orifices 100. The orifices 100 and the asperities 200 may for example be arranged alternately. Asperities 200 may for example be arranged on either side of each of the orifices, in the direction connecting the lower end 12B and the upper end 12A.

[0213] In this example, the asperities 200 may be ribs 205, for example rectilinear, having for example a curved external surface and having for example rounded ends. The ribs 205 may for example project from the side wall 120. The ribs 205 may be formed in a single piece with the application head 12, for example with the side wall 120. In this example, the application zone 24 may correspond to a second side face 124 and to a fourth side face 128 ([Fig. 10]), for example of the side wall 120, of the application head. The second side face 124 and the fourth side face 128 are arranged respectively between the first side face 122 and the third side face 126 of the application head. In this example, the second lateral face 124 and the fourth lateral face 128 which form the application zone 24 may have a smooth external surface.

[0214] In the examples previously described, the loading zone 22 and the application zone 4 may be distinct. Thus, the loading zone 22 and the application zone 24 may be configured to be brought into contact separately with the target surface.

[0215] The loading zone 22 and the application zone 24 may comprise asperities 200.

[0216] For example, the application head 12 may be similar to the example of the application head 12 illustrated in FIGS. 9 and 10, with the difference that the second lateral face 124 and the fourth lateral face 128 which form the application zone 24 do not have a smooth external surface but asperities 200.

[0217] According to this example in which the loading zone 22 and the application zone 24 may comprise asperities 200, the loading zone 22 and the application zone 24 may be distinct.

[0218] The embodiment illustrated in [Fig.l 1] is similar to the embodiments described above and may include all of their characteristics except that the application device does not include an application zone 24.

[0219] In the application device illustrated in [Fig. 11], the orifices may extend over the entire wall, for example over the entire circumference of the application head 12.

[0220] For example, the asperities may extend over the loading area, e.g., the loading area only.

[0221] In the example illustrated in [Fig. 11], the application head 12 comprises the upper end 12A, the lower end 12B and the side wall 120 connecting the two ends 12A, 12B. The side wall 120 may have, for example, a curved shape, for example so as to define, in combination with the upper end 12A, an oval shape. The side wall 120, for example the curved shape, may have a central portion, the central portion possibly having a diameter greater than the rest of the application head 12. In this embodiment, the cavity 40, for example the single cavity 40, opens to the outside of the application head via the plurality of orifices 100. The plurality of orifices can be provided over the entire surface of the side wall 120, i.e. on all the faces of the side wall 120. In this example, the orifices can have different shapes.For example, the proximal orifices at the upper end 12A may have a square shape and the other orifices may have a round shape. These orifices 100 make it possible to form a passage between the exterior of the application head 12 and the cavity 40 and are connected to each other. In this example, the asperities may be arranged on the portions of the side wall 120 arranged between the orifices 100. In this example, the asperities 200 may be lugs 210. The lugs 210 may, for example, protrude from the side wall 120. The lugs 210 may be formed in a single piece with the application head 12, for example with the side wall 120. The lugs may be domed, for example with a domed surface, for example having a . shape of a truncated cylinder lying down, for example having a cylinder axis orthogonal to a longitudinal axis X of the application head 12.

[0222] According to another embodiment not illustrated, the application head 12 may be predominantly full, for example substantially full, and the loading zone may comprise a cavity opening to the outside of the application head 12 through a single orifice. In this embodiment, the cavity may form a recess or a hole, for example a blind hole inside the application head 12. The application zone may comprise one or more cavities opening to the outside of the application head 12 through a single orifice.

[0223] The application head 12 may comprise or be made of a material whose thermal effusivity is greater than that of the target surface, the target surface being the skin of a user and / or greater than that of the handle 14.

[0224] This allows the application head 12 to provide a sensation of cold and therefore a decongestant effect on the target surface.

[0225] For example, the application head 12 comprises a metallic material. For example, the application head 12 is made of metal, for example in its entirety.

[0226] For example, the application head 12 is made of zinc or aluminum alloy which can be covered with an anti-corrosion material.

[0227] For example, the application head 12 is made of steel, for example stainless steel, such as 316L steel.

[0228] For example, the application head 12 comprises a ceramic material. For example, the application head 12 is made of ceramic, for example in its entirety.

[0229] For example, the material may comprise or be an aluminum oxide-based ceramic.

[0230] Metal and ceramic are materials whose thermal effusivity makes it possible to provide a sensation of cold when applied to a target surface such as a user's skin.

[0231] [Fig. 14] illustrates an alternative embodiment in which the device application 10 may include an insert 90.

[0232] The insert 90 is configured to allow the application device 10 to apply the cosmetic product with more precision.

[0233] The insert 90 may be arranged on the application head 12. The application head 12 and the insert may be connected, in a non-limiting manner, for example by clipping, gluing, clamping, welding or even overmolding.

[0234] For example, the application head 12 may comprise a first material and the insert 90 may comprise a second material different from the first material. The first material is a material whose thermal effusivity is greater than that of the target surface, the target surface being the skin of a user.

[0235] The second material, i.e. the material of the insert, may comprise fibers for example, or a sponge.

[0236] For example, the insert is made of plastic flocked with fibers.

[0237] In other variants, the insert 90 may be made of sponge, silk, or felt.

[0238] In the example illustrated in [Fig. 14], the application device 10 comprises the application head 12 and the insert 90. In this example, the insert 90 is provided on the upper end 12B, for example flat, of the application head 12. The insert 90 may have a curved shape.

[0239] The invention is not limited to the examples which have just been described. For example, for each example, the loading zone and / or the application zone may comprise asperities.

[0240] A method of using a cosmetic product application device 10 as described previously is described below.

[0241] The method of use comprises a first step 1 of loading cosmetic product onto the loading zone 22, a second step 2 of point transfer of the cosmetic product onto a target surface, and a third step 3 of distributing the cosmetic product by spreading using the application zone 24.

[0242] A method of manufacturing the application device is described below.

[0243] The method comprises a step of manufacturing the application head 12 by fa additive manufacturing, also called 3D manufacturing, in which a cavity 40 is formed in the application head 12 and opens outside the application head 12 through at least one orifice 100 and in which asperities 200, for example all the asperities or some of the asperities, are formed on the application head 12.

[0244] The method may comprise a step in which the asperities 200 are formed in the loading zone 22 and / or in the application zone 24.

[0245] The method may comprise a step in which the asperities 200 are formed on the side wall 120 of the application head.

[0246] For example, the asperities are formed in a single piece with the side wall 120 of the application head 12.

[0247] The additive manufacturing process used to manufacture the application head 12 may be the injection of binder onto a powder bed, also known as “Binder Jetting” in English terminology.

[0248] [Fig. 13] illustrates an alternative embodiment in which the hollow formed at the interior of the application head 12 and the hollow of the elongated part of the lower end 12B of the application head 12 communicate with each other and are no longer separated by a floor 80 ([Fig.4]). This configuration makes it possible to eliminate the remaining powder which could remain in the elongated part of the lower end 12B of the application head 12 at the end of the step of manufacturing the head 12 application by 3D printing. In this embodiment, the application device 10 may be devoid of the reinforcing element 28.

Claims

Claims

1. A device (10) for applying a cosmetic product, comprising an application head (12), the application head (12) comprising: - a cosmetic product loading zone (22) comprising a cavity (40) formed in the application head (12) and opening outside the application head (12) via at least one orifice, the application head (12) comprising a material whose thermal effusivity is greater than that of the target surface, the target surface being the skin of a user, and the application head (12) comprising asperities (200).

2. Application device (10) according to claim 1 wherein the application head (12) is hollow, the hollow (50) of the application head forming the cavity (40) of the loading zone (22).

3. Application device (10) according to claim 2 in which the cavity (40) opens outside the application head (12) via a plurality of orifices (100).

4. Application device (10) according to any one of claims 1 to 3 wherein the application head (12) comprises: - an application zone (24) of the cosmetic product loaded on the loading zone (22), on a target surface such as the skin of a user, the device in which the loading zone (22) and / or the application zone (24) comprises the asperities (200).

5. Application device (10) according to claim 4 wherein the orifices (100) are arranged on a first lateral face (122) of the application head only and wherein the application zone (24) corresponds to a second lateral face (124) of the application head (12).

6. Application device (10) according to claim 5 wherein the first lateral face (122) and / or the second lateral face (124) comprises the asperities (200).

7. Application device (10) according to claim 4, in which the orifices (100) are arranged on a first lateral face (122) and on a third lateral face (126) of the application head (12), the first lateral face (122) and the third lateral face (126) being opposite each other and in which the application zone (24) corresponds to a second lateral face (124) and a fourth lateral face (126).

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17. lateral (128) of the application head (12) arranged respectively between the first lateral face (122) and the third lateral face (126) of the application head (12). Application device (10) according to claim 7 wherein the first lateral face (122) and / or the second lateral face (124) and / or the third lateral face (126) and / or the fourth lateral face (128) comprise the asperities (200). Application device (10) according to any one of claims 1 to 3 in which the loading zone comprises the asperities. An application device (10) according to any preceding claim wherein the application head comprises a side wall (120) and wherein the asperities (200) are formed in one piece with the side wall (120). Application device (10) according to any one of the preceding claims in which the asperities (200) comprise or are ribs (205), for example rectilinear. An application device (10) according to any one of claims 1 to 11 wherein the asperities comprise or are lugs (210). An application device (10) according to any one of the preceding claims wherein the application head (12) comprises an upper end (12A), a lower end (12B) and a side wall (120) connecting the upper end (12A) and the lower end (12B) and wherein the asperities (200) extend only between the upper end 12A and the lower end 12B of the application head. Application device (10) according to the preceding claim in which the upper end (12A) and / or the lower end (12B) is / are free from roughness. An application device (10) according to any preceding claim wherein the application head (12) comprises a metallic material. An application device (10) according to any preceding claim comprising an insert (90) arranged on the application head (12), the insert (90) comprising a material different from the material of the application head (12). Assembly (400) comprising the application device (10) according to any one of the preceding claims and a reservoir (300) of cosmetic product.

18. A method of manufacturing an application device (10) according to any one of the preceding claims, the method comprising a step of manufacturing the application head (12) by additive manufacturing in which a cavity (40) is formed in the application head (12) and opens to the outside of the application head (12) via at least one orifice (100) and in which asperities (200) are formed on the application head (12).

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