Mascara brush

Abstract

Mascara brush. Mascara brush (1) extending along a principal axis and comprising at least one arm (10, 20) equipped with applicator elements (5), wherein the at least one arm (10, 20) comprises a primary arm (10) having an inner blade (6) and an outer blade (4) joining to form a closed loop, and the inner blade (6) is located at a non-zero distance from the principal axis and less than a distance of the outer blade (4) from the principal axis. Figure for the abbreviation: Fig. 1.

Description

Title of the invention: Mascara brush Technical field

[0001] The present disclosure relates to a mascara brush, and more particularly to a mascara brush structure. Such a mascara brush may in particular find its application in the field of cosmetics. Prior art

[0002] A mascara brush allows the collection of a formula contained in a bottle, then its application to the eyelashes of a user.

[0003] In order to facilitate the use of a mascara brush, it would be advantageous to be able to offer a mascara brush allowing better application of the formula to the eyelashes. Statement of the invention

[0004] For this purpose, the present disclosure relates to a mascara brush extending along a main axis and comprising at least one branch provided with applicator elements, in which the at least one branch comprises a primary branch having an inner blade and an outer blade joining so as to form a closed loop, and the inner blade is located at a distance from the main axis that is non-zero and less than a distance from the outer blade to the main axis.

[0005] In the present disclosure, the main axis of the brush is referred to as the main axis. The axial direction corresponds to the direction of the main axis and a radial direction is a direction perpendicular to this axis and intersecting this axis. Similarly, an axial plane is a plane containing the main axis and a radial plane is a plane perpendicular to this axis. A circumference is understood to be a circle belonging to a radial plane and whose center belongs to the axis of the dispenser. A tangential or circumferential direction is a direction tangent to a circumference; it is perpendicular to the axis but does not pass through the axis. A circumferential plane is a plane strictly parallel to the axis, that is to say not intersecting the axis and not including the axis.

[0006] A blade is understood to mean a straight or curved and filiform structure, that is to say one having a dimension greater than the other two dimensions. For example, a blade is understood to mean a solid whose length, possibly curvilinear, is greater than its thickness and its width.

[0007] It is understood that the joining of the inner blade and the outer blade forms a closed loop when two distinct ends of the inner blade are respectively connected to two distinct ends of the outer blade.

[0008] In such a mascara brush, the closed loop structure formed by the inner blade and the outer blade has a flexibility allowing for improved tracking of the eyelash during application of the formula. Furthermore, due to the distance of the blades from the main axis, a space is free within the brush, this space allowing for accumulation of formula, and thus increasing the quantity of formula that can be deposited in one application. These two effects allow for easier application of formula in a single application.

[0009] In some embodiments, the inner blade is located at a distance from the main axis that is strictly positive and less than a distance from the outer blade to the main axis.

[0010] In some embodiments, applicator elements are disposed on the outer blade of the primary branch.

[0011] It is understood that branches, which are not primary branches but which have an outer blade, may have applicator elements arranged on an outer blade.

[0012] The applicator elements make it easier to apply formula to individual eyelashes. The applicator elements may be bristles, spikes, etc.

[0013] In certain embodiments, the inner blade and the outer blade are crossed by the same virtual half-plane delimited by the main axis. A plane is said to cross a blade if two ends of the blade are in said plane, and the intersection of the blade with said plane is continuous between these two ends.

[0014] A virtual plane is understood to mean a plane that does not have a physical support. A virtual half-plane is understood to mean half of a virtual plane delimited by a straight line.

[0015] Thanks to such coplanar positioning of the inner blade and the outer blade, the closed loop has flexibility in a direction corresponding to a direction of application of force when applying formula to an eyelash by means of the brush.

[0016] In some embodiments, the loop extends along the main axis over a distance between 10 mm and 45 mm, preferably between 25 mm and 40 mm, preferably 30 mm.

[0017] In certain embodiments, the loop of the primary branch is included in a virtual hollow cylindrical sleeve centered on the main axis and with a thickness of between 2 and 10 mm, preferably between 2 mm and 5 mm.

[0018] In some embodiments, the cylindrical sleeve is axisymmetric, i.e., is a cylindrical sleeve with a circular base.

[0019] In some embodiments, the difference between the distance to the main axis of a loop position furthest from the main axis and the distance to the main axis of a loop position closest to the main axis is comprised between 2 and 10 mm, preferably between 2 mm and 5 mm. This difference corresponds to the radial thickness of the cylindrical sleeve.

[0020] In some embodiments, the primary branch has a convex oblong shape when viewed in a circumferential projection.

[0021] A circumferential projection is a projection along a circumferential direction, in a half-plane limited by the principal axis. In other words, points having the same circumferential projection are located on the same circumference.

[0022] By oblong is understood a shape longer than it is wide, having non-projecting ends. The shape may have portions that are indifferently curved and / or polygonal.

[0023] Such a structure makes it possible to adapt the flexibility of the branch, which can deform in an axial plane on the model of leaf springs.

[0024] In some embodiments, the primary branch has an oblong shape having at least one point of inflection when viewed in a circumferential projection.

[0025] By inflection point, we understand a point of change of concavity.

[0026] In some embodiments, the at least one branch has an oblong shape. exhibiting at least one bulge seen in a circumferential projection.

[0027] In some embodiments, the inflection point and / or the bulge are located on the outer branch.

[0028] These structures make it possible to locally modify the rigidity of the branches. In addition, they make it possible to highlight or set back certain parts of the branches, so as to offer the user different application zones having different properties. These structures make it possible to locally soften or harden the contact with a means of wiping the bottle, in order to locally modify the intensity of wiping of the brush and therefore the quantity of formula locally and globally retained on the brush.

[0029] In some embodiments, the brush comprises a plurality of branches distributed around the main axis.

[0030] In some embodiments, the brush comprises a plurality of identical branches.

[0031] In some embodiments, the brush comprises a plurality of branches regularly distributed around the main axis.

[0032] It is understood that all branches can be identical to each other. It is also understood that only certain branches can be identical to each other, forming families of branches such that the branches of the same family are identical to each other, and the branches of distinct families are distinct.

[0033] In certain embodiments, the branches of the plurality of branches are invariant by rotation of a non-zero angle and strictly less than 360°. It is understood that this property applies to all branches, said rotation then transforming each branch into another branch which is identical to it. The rotation can be a rotation around the main axis. Rotation invariance allows for ease of use for the user, who does not have to worry about the orientation of the brush.

[0034] In some embodiments, successive branches of the plurality of branches are of different shapes.

[0035] By successive branches, we mean circumferentially successive branches.

[0036] In some embodiments, the branches of the plurality of branches are primary branches having alternately a convex oblong shape as viewed in a circumferential projection and an oblong shape having at least one inflection point as viewed in a circumferential projection.

[0037] It is understood that the shapes described in a circumferential projection may in particular be the same shapes seen in a virtual half-plane delimited by the main axis. However, the branches may possibly also extend along a circumferential component.

[0038] The arrangement of the branches and the diversity of their shapes make it possible to apply the formula by means of several different branch patterns of different dimensions and deformability, and thus to ensure better application of the formula.

[0039] In some embodiments, the brush has at least one reinforcement connecting at least two separate inner blades.

[0040] The reinforcement makes it possible to reinforce the structure of the brush, and in particular to reduce its deformability in a radial direction to a local deformation of a branch rather than to an overall deformation of the brush. The reinforcement also forms a junction between the inner blades, by which the formula can be distributed between two inner blades of two separate branches.

[0041] In some embodiments, the at least one reinforcement extends in a direction oblique to the main axis.

[0042] By direction oblique to the direction of the main axis, we mean a direction contained in an axial plane and forming an angle with the main axis strictly between 0° and 90°.

[0043] For example, the reinforcement is a central reinforcement. A position is said to be central near the main axis, and peripheral far from the main axis. Typically, a central reinforcement may be located closer to the main axis than the inner blades that it connects.

[0044] In some embodiments, the reinforcement comprises a plurality of arms respectively connected to the inner blades of primary branches of the plurality of branches, the arms preferably joining along the main axis.

[0045] The present disclosure also relates to a mascara applicator comprising a brush according to the present disclosure, as well as a holder connected to the brush and configured to be assembled to a handle.

[0046] In some embodiments, one end of the loop opposite the support is a free end.

[0047] In some embodiments, the inner blade and the outer blade meet at the free end of the loop.

[0048] The invention also relates to a method for manufacturing a mascara brush according to the present disclosure, comprising at least one step of manufacturing an inner blade and / or an outer blade by additive manufacturing method. Brief description of the drawings

[0049] [Fig-1] [Fig. 1] is a perspective view of a brush according to a first embodiment.

[0050] [Fig.2] [Fig.2] is a view of the brush according to the first embodiment seen in a lateral direction perpendicular to the axis of the brush.

[0051] [Fig.3] [Fig.3] is a view of the brush according to the first embodiment seen from one end, according to direction III of [Fig.2].

[0052] [Fig.4] [Fig.4] is a view corresponding to the view of [Fig.3] of a brush according to a second embodiment.

[0053] [Fig.5][Fig.6][Fig.7] Figures 5, 6 and 7 are views respectively according to the section planes V, VI and VII of [Fig.3].

[0054] [Fig.8][Fig.9][Fig.l0] Figures 8, 9 and 10 represent alternatives to the structures of figures 5, 6 and 7. Description of the embodiments

[0055] The present invention will be described with reference to specific exemplary embodiments. However, it is obvious that modifications and changes may be made to these examples without departing from the general scope of the invention as defined by the claims. In particular, individual features of the various illustrated / mentioned embodiments may be combined in additional embodiments. Therefore, the description and drawings should be considered in an illustrative rather than restrictive sense.

[0056] The general structure of the brush will be described in relation to Figures 1 to 3.

[0057] The brush 1 has a structure extending substantially along a main axis A.

[0058] One end of the brush 1 is free, and corresponds to an end through which the brush enters a bottle to collect formula. Another end is connected to a support 2, which can be assembled to a handle so as to form a mascara applicator.

[0059] The brush 1 comprises at least one branch, here a plurality of primary branches 10 and secondary branches 20, each provided with applicator elements 5. As mentioned previously, the primary branches 10 and the secondary branches 20 may have a certain flexibility, which is why they will subsequently be described in their configuration at rest, that is to say in the absence of external force.

[0060] The primary branches 10 and the secondary branches 20 extend substantially along the main axis A, and are arranged circumferentially around the main axis A.

[0061] In the present embodiment, the brush 1 comprises two branch patterns, a primary branch 10 and a secondary branch 20.

[0062] By primary branch 10 is meant a branch comprising an outer blade 4 and an inner blade 6 forming a loop. The outer blade 4 and the inner blade 6 each have two ends, and each end of the outer blade 4 is connected to one end of the inner blade 6 so that the outer blade 4 and the inner blade 6 form a loop.

[0063] By secondary branch 20 is meant a branch whose blade(s) has(have) a free end, so that the secondary branch 20 is devoid of a loop. For example, a secondary branch 20 may comprise an outer blade 4 and an inner blade 6, having a free end. A secondary branch 20 may also comprise a single blade.

[0064] The primary branch 10 and the secondary branch 20 are therefore distinguished in that the primary branch 10 comprises an outer blade 4 and an inner blade 6 forming a loop, while the secondary branch 20 comprises one or more blade(s) but is devoid of a loop.

[0065] The brush 1 may comprise one or more branches of each pattern.

[0066] The branches of the same pattern can be identical to each other, that is to say that all the primary branches 10 can be of the same dimensions, and that all the secondary branches 20 can be of the same dimensions.

[0067] In the present embodiment, the primary branch 10 is circumferentially thicker than the secondary branch 20.

[0068] The primary branch 10 and the primary branch 20 have applicator elements 5 projecting radially outwards from the brush 1, so as to be able to come into contact with eyelashes. However, other application elements, for example for eyebrows, hair, nails, etc. are also envisaged, by means of the choice of suitable applicator elements 5.

[0069] The applicator elements 5 form one or more rows (here, one or two rows) of applicator elements 5 extending over a primary branch 10 or a secondary branch 20 along the main axis A.

[0070] In the present embodiment, the brush 1 comprises four primary branches 10 and four secondary branches 20, regularly distributed around the main axis A, the primary branches 10 and the secondary branches 20 being provided alternately.

[0071] In particular, the brush 1 of the first embodiment is invariant by rotation of an angle of 90° (as well as its multiples, in particular 180° and 270°) around the main axis A.

[0072] In the examples described and the attached figures, the branches have a symmetrical distribution. It is understood, however, that the branches may also have a non-symmetrical distribution and / or be irregularly distributed around the main axis A.

[0073] [Fig. 4] shows a second embodiment, in which the density of primary branches 10 and secondary branches 20 is greater than in the first embodiment.

[0074] In particular, the brush 1 of the second embodiment comprises six primary branches 10 and six secondary branches 20. In addition, the brush 1 of the second embodiment comprises is invariant by rotation of angle of 60° (as well as its multiples, in particular 120°, 180°, 240° and 300°) around the main axis A.

[0075] The primary branches 10 and the secondary branches 20 are provided in a plane comprising the main axis A, and in particular a virtual half-plane delimited by the main axis A.

[0076] The secondary branch 20 of the first embodiment will be described in [Fig. 5] corresponding to a view in the section plane VV of [Fig. 3]. The primary branch 10 of the first embodiment will be described in Figures 6 and 7 corresponding respectively to views in the section planes VLVI and VILVII of [Fig. 3].

[0077] The views of figures 5 to 10, which will be described below, have symmetry along the main axis A. Each of these views therefore has two symmetrical branches, and only one of them will be described.

[0078] [Fig. 5] shows a secondary branch 20 having a blade. By analogy with the structure of the primary branches 10, the blade of the present secondary branch 20 will be designated by outer blade 4. Applicator elements 5 are provided on the brush 1, on a radially outer part of the outer blade 4.

[0079] The outer blade 4 is crossed by a virtual half-plane delimited by the main axis A, this virtual half-plane being here included in the section plane VV which is the plane of [Fig.5].

[0080] The outer blade 4 has a convex shape seen in section in the plane of [Fig.5] and extends along the main axis A between a support, on which the outer blade 4 is mounted, and a free end of the brush 1.

[0081] The outer blade 4 has a substantially constant curvature seen in section in the plane of [Fig.5], except for the ends of the outer blade 4, which have a higher curvature.

[0082] [Fig.6] shows a primary branch 10 having an outer blade 4 and an inner blade 6.

[0083] The outer blade 4 and the inner blade 6 are crossed by the same virtual half-plane delimited by the main axis A, here included in the section plane VLVI which is the plane of [Fig.6].

[0084] The outer blade 4 and the inner blade 6 have two ends joining to form a closed loop.

[0085] The closed loop here is convex in shape. In other words, the outer blade 4 and the inner blade 6 are both convex in shape when viewed in section in the same virtual half-plane passing through the outer blade 4 and the inner blade 6, and the outer blade 4 and the inner blade 6 turn their respective concavities towards each other.

[0086] The outer blade 4 has a substantially constant curvature seen in section in the plane of [Fig.6].

[0087] The inner blade 6 has a substantially constant curvature seen in section in the plane of [Fig.6].

[0088] The curvature of the outer blade 4 is greater than the curvature of the inner blade 6. This allows a greater amplitude of deformation of the outer blade 4 in response to a radial force, which allows the outer blade 4 to conform to the eyelashes during the application of formula.

[0089] The ends at which the outer blade 4 and the inner blade 6 meet are curved. The curvature at the ends is greater than the curvatures of the outer blade 4 and the inner blade 6 outside their ends. Optionally, one and / or the other of the ends may form an edge.

[0090] The inner blade 6 is located at a distance from the main axis A which is strictly positive, and less than a distance from the outer blade 4 to the main axis A, application elements 5 excluded.

[0091] The distance from the inner blade 6 to the main axis A is less than the distance from the outer blade 4 to the main axis A if the average distance from the main axis of the positions of the inner blade 6 is less than the average distance from the main axis A of the positions of the outer blade 4.

[0092] In other words, the loop formed by the outer blade 4 and the inner blade 6 is included in a virtual hollow cylindrical sleeve C centered on the main axis, with inner radius r; and outer radius re.

[0093] In other words, the outer blade 4 and the inner blade 6 of all the primary branches 10 and the secondary branches 20 are included together in a cylinder. outer cylinder having as its axis the main axis A, of outer radius re, and which is a smaller cylinder including the outer blade 4 and the inner blade 6; whereas no part of outer blade 4 or inner blade 6 is included in an inner cylinder having as its axis the main axis A, of inner radius q and of axial length identical to the axial length of the outer cylinder. The inner cylinder is therefore a cylinder with axis the main axis A, of the same axial length as the outer cylinder, and having the largest possible radius without including any part of the inner blade 4 or the outer blade 6. The hollow cylindrical sleeve is defined between the outer cylinder and the inner cylinder.

[0094] The hollow cylindrical sleeve, the outer cylinder and the inner cylinder are virtual. By virtual is understood an element which has no physical support.

[0095] The virtual hollow cylindrical sleeve C designates the virtual hollow cylindrical sleeve called “envelope”, that is to say the virtual hollow cylindrical sleeve C having the values ​​of maximum internal radius q and external radius re and minimum axial length such that each of the four faces of the hollow cylindrical sleeve are tangent to the external blade 4 or to the internal blade 6.

[0096] As shown in Figures 3 to 6, the blades are all included at a distance from the main axis A less than the external radius re. As shown in Figures 5 and 6, no blade portion is located at a distance from the main axis A less than the internal radius r;.

[0097] It can be seen in Figures 3 to 6 that the position of the outer blade 4 of the primary branch 10 of [Fig.6] furthest from the main axis A is further from the main axis A than the position of the outer blade 4 of the secondary branch 20 of [Fig.5] furthest from the main axis A, so that the outer cylinder of the hollow cylindrical sleeve is defined for the branch of [Fig.6].

[0098] In the same way, but independently, the position of the inner blade 6 of the primary branch 10 of [Fig.6] closest to the main axis A is closer to the main axis A than the position of the outer blade 4 of the secondary branch 20 of [Fig.5] closest to the main axis A, so that the inner cylinder of the hollow cylindrical sleeve is defined for the branch of [Fig.6].

[0099] The hollow cylindrical sleeve has a thickness e=re-r; between 1 mm and 7 mm, preferably between 2 mm and 5 mm, excluding application elements 5.

[0100] The axial length of the hollow cylindrical sleeve is equal to the axial length of the loops, corresponding to the axial length of the inner 6 and outer 4 blades, and is between 10 mm and 45 mm, preferably between 25 mm and 40 mm, preferably equal to 30 mm.

[0101] In the examples described and the attached figures, all the primary branches 10 and the secondary branches 20 are tangent to two or more than two faces of the sleeve cy lindrique. These primary branches 10 and these secondary branches 20 are distributed all around the main axis A and are such that the outer blades 4 of these primary branches 10 are located at the same first distance from the main axis A and the outer blades 4 of these secondary branches 20 are located at the same second distance from the main axis A, the second distance here being less than the first distance but being able to be, in other cases, greater or equal.

[0102] In an alternative embodiment, the distribution and dimensions of the primary branches 10 and / or the secondary branches 20 may be variable over a circumference. Furthermore, the distance from the main axis of the ends of the primary branches 10 and the secondary branches 20 may vary from one branch to another, so that the primary branches 10 and the secondary branches 20 may be arranged in a shape other than a circle.

[0103] For example, in the case where the primary branches 10 have a substantially ellipsoidal distribution around the main axis A, that is to say that the ends of all or part of the primary branches 10 seen in a radial plane define an ellipse-shaped contour, the cylindrical sleeve may have an ellipsoidal base. In other words, the inner cylinder and the outer cylinder which define the cylindrical sleeve, and between which all the outer blades 4 and all the inner blades 6 of the primary branches 10 and the secondary branches 20 are included, are cylinders with ellipsoidal bases of the same length and so that the base of the inner cylinder is a reduction of the base of the outer cylinder.

[0104] Generally speaking, it is understood that the outer cylinder and the inner cylinder can have various shapes centered or not on the main axis A, for example a shape of cylinder with any base.

[0105] For example, the outer cylinder can be defined so that its base is the convex envelope of the outer blades 4 seen in a radial plane at a position at which the outer blades 4 are furthest from the main axis A.

[0106] More generally, the thickness e can designate the greatest thickness of a branch among all the branches of the brush, in which the thickness of a branch is the difference between the distance to the main axis of the point of the branch furthest from the main axis A and the distance to the main axis of the point of the branch closest to the main axis A.

[0107] Branch 10 of [Fig.7] is branch 10 of [Fig.6] seen in an axial section plane comprising applicator elements 5.

[0108] The branches of Figures 8 to 10 are alternatives to the branches of Figures 6 and 7, and their common characteristics will not be described.

[0109] The sectional views of figures 6, 8, 10, correspond to views along sectional planes not comprising applicator elements 5, but it is understood that the branches shown include applicator elements 5 outside these cutting planes.

[0110] In the embodiment of [Fig.8], the loop does not have a convex shape, and has a concavity zone.

[0111] In particular, in the embodiment of [Fig.8], the outer blade 4 is not convex in shape, and has a concavity zone.

[0112] The outer blade 4 has a bulge, that is to say a region in which the distance from the main axis of the outer blade 4 increases so as to form at least one point of inflection in the curvature of the outer blade 4. In particular, the outer blade 4 of [Fig.8] has two points of inflection, on either side of the bulge. In addition, the bulge has a greater curvature than the rest of the blade, excluding the ends and the point of inflection.

[0113] It is understood that the outer blade 4 may have other shapes, for example flat, concave, or even having an alternation of several bulges and concavity zones, etc.

[0114] The brush of [Fig.9] corresponds to the brush of [Fig.7], also having a reinforcement.

[0115] A reinforcement connects at least two distinct inner blades 6. For example, a reinforcement connects two circumferentially opposite inner blades 6 or two circumferentially adjacent inner blades 6.

[0116] A reinforcement comprises at least one arm 8 connected on the one hand to an inner blade 6, and on the other hand to one or more other separate arms 8, so that separate inner blades 6 are connected to each other.

[0117] A reinforcement is here defined by a set of arms 8 connected to each other. It is understood that a brush can have several reinforcements, each corresponding to a distinct set of arms 8 connected to each other.

[0118] Not all branches are necessarily connected together by arms 8. For example, some branches among the plurality of branches may not be connected to any other branches, and some branches among the plurality of branches may be connected to each other by one or more arms 8.

[0119] Certain branches may be connected to each other by arms 8 of different types. For example, arms 8 of different types may have different shapes, different sections and / or different orientations. This makes it possible to adjust the flexibility of the branches over a circumference of the brush, and thus allow application with an adapted effort depending on the orientation of the brush relative to the user's eyelashes.

[0120] The arms 8 can be connected to branches at variable axial positions. This makes it possible to adjust the flexibility of the branches along the brush, and thus allow a application with an effort adapted according to the position of the user's eyelashes along the brush.

[0121] All the primary branches 10 and the secondary branches 20 of the brush 1 may be supported by arms 8 forming the same reinforcement. It is also understood that only certain primary branches 10 and secondary branches 20 may have arms 8 forming the same reinforcement. For example, a reinforcement may be formed between all the primary branches 10, and another reinforcement may be formed between all the secondary branches 20.

[0122] A brush may then have a single reinforcement, several reinforcements at different positions along the main axis A, or have no reinforcement.

[0123] When applying formula to an eyelash, a branch circumferentially opposite a branch in contact with the eyelash is free. Thus, forces applied to the branch in contact with the eyelash are transmitted to the circumferentially opposite branch via the reinforcement, which makes it possible to stiffen the structure of the brush. Furthermore, formula can be exchanged between two branches via the reinforcement, in particular arms 8.

[0124] In this embodiment, the arms 8 join along the main axis A.

[0125] The arms 8 are here oblique, that is to say having a direction different from the directions radial and axial. Two arms 8 joining obliquely form a spring effect to absorb the forces transmitted to a branch when it comes into contact with an eyelash. Alternatively, the arms 8 can be radial.

[0126] The branch of [Fig.10] corresponds to the branch of [Fig.8], comprising arms 8.

[0127] It is understood that the primary branches 10 and the secondary branches 20 may have all or part of the characteristics described above.

[0128] The brush 1 may also comprise branches of a third nature, not comprising applicator elements 5 and comprising the outer 4 and / or inner 6 blades described above.

[0129] The present application has been described for embodiments having a primary branch 10 and a secondary branch 20. It is understood that this designation does not prejudge a relative importance of one branch compared to the other. Furthermore, it is understood that the brush may also comprise only primary branches, or even comprise primary branches as well as secondary branches and / or branches of a third nature.

[0130] It is understood that the definition of the virtual hollow cylindrical sleeve applies for a brush 1 having such a diversity of branches, the virtual hollow cylindrical sleeve being the smallest virtual hollow cylindrical sleeve in which all the blades of the brush are included.

[0131] The brush 1 is suitable for manufacturing by an additive manufacturing method.

[0132] For example, the inner blade 6 and / or the outer blade 4 may be manufactured by an additive manufacturing method, for example powder bed fusion, selective laser sintering or multi-jet fusion, for example comprising a polymer material among polyamides, polyolefins, co-polyesters, styrenic polymers, or silicone. It is understood, however, that the brush 1 may be produced by any combination of manufacturing process by additive manufacturing method and associated material having sufficient resolution for producing the brush 1 provided with applicator elements. Such a brush may then be mounted on a support assembled to a handle.

Claims

Claims

1. A mascara brush (1) extending along a main axis and comprising at least one branch (10, 20) provided with applicator elements (5), wherein the at least one branch (10, 20) comprises a primary branch (10) having an inner blade (6) and an outer blade (4) joining together to form a closed loop, and the inner blade (6) is located at a distance from the main axis that is not zero and less than a distance from the outer blade (4) to the main axis.

2. A mascara brush (1) according to claim 1, wherein applicator elements (5) are arranged on the outer blade (4) of the primary branch (10).

3. Brush (1) for mascara according to claim 1 or 2, in which the inner blade (6) and the outer blade (4) are crossed by the same virtual half-plane delimited by the main axis.

4. Brush (1) for mascara according to any one of claims 1 to 3, in which the loop of the primary branch (10) is included in a virtual hollow cylindrical sleeve centered on the main axis and of thickness between 1 and 7 mm, preferably between 2 mm and 5 mm.

5. A mascara brush (1) according to any one of claims 1 to 4, wherein the primary branch (10) has a convex oblong shape when viewed in a circumferential projection.

6. A mascara brush (1) according to any one of claims 1 to 5, wherein the primary branch (10) has an oblong shape having at least one point of inflection when viewed in a circumferential projection.

7. A mascara brush (1) according to any one of claims 1 to 6, wherein the brush (1) has a plurality of branches (10, 20) distributed around the main axis.

8. Brush (1) for mascara according to claim 7, in which the brush (1) has a plurality of branches (10, 20) which are identical and / or regularly distributed around the main axis.

9. A mascara brush (1) according to claim 7 or 8, wherein successive branches (10, 20) of the plurality of branches (10, 20) are of different shapes.

10. A mascara brush (1) according to any one of claims 7 to 9, wherein the branches (10, 20) of the plurality of branches (10, 20) are primary branches (10) having alternately a convex oblong shape seen in a circumferential projection and an oblong shape having at least one inflection point seen in a circumferential projection.

11. Brush (1) for mascara according to any one of claims 7 to 10, having at least one reinforcement connecting at least two separate inner blades (6).

12. A mascara brush (1) according to claim 10, wherein the at least one reinforcement extends in a direction oblique to the main axis.

13. A mascara brush (1) according to claim 11 or 12, wherein the reinforcement comprises a plurality of arms (8) respectively connected to the inner blades (6) of primary branches (10) of the plurality of branches (10, 20), preferably joining along the main axis.

14. A method of manufacturing a mascara brush (1) according to any one of claims 1 to 13, comprising at least one step of manufacturing an inner blade (6) and / or an outer blade (4) by additive manufacturing method.

15. A mascara applicator comprising a brush (1) according to any one of claims 1 to 13, a holder connected to the brush (1) and configured to be assembled to a handle.

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