EP2923600A1 - Applicator for a cosmetic product, in particular mascara and method of producing such an applicator - Google Patents

Applicator for a cosmetic product, in particular mascara and method of producing such an applicator Download PDF

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Publication number
EP2923600A1
EP2923600A1 EP15160191.1A EP15160191A EP2923600A1 EP 2923600 A1 EP2923600 A1 EP 2923600A1 EP 15160191 A EP15160191 A EP 15160191A EP 2923600 A1 EP2923600 A1 EP 2923600A1
Authority
EP
European Patent Office
Prior art keywords
faces
main axis
applicator
core
fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15160191.1A
Other languages
German (de)
French (fr)
Other versions
EP2923600B1 (en
Inventor
Camille Schreiber
Anne Rutigliano
Patrick Lhoyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Services SAS
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Albea Services SAS
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Publication date
Application filed by Albea Services SAS filed Critical Albea Services SAS
Publication of EP2923600A1 publication Critical patent/EP2923600A1/en
Application granted granted Critical
Publication of EP2923600B1 publication Critical patent/EP2923600B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
    • A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
    • A45D40/265—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like connected to the cap of the container
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/18—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed on or between belts or wires
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/05—Machines for inserting or fixing bristles in bodies for fixing the bristles between wires, tapes, or the like
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • A46B2200/1053—Cosmetics applicator specifically for mascara
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/026—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups where the surface of the brush body or carrier is not in one plane, e.g. not flat
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/028—Bristle profile, the end of the bristle defining a surface other than a single plane or deviating from a simple geometric form, e.g. cylinder, sphere or cone
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles

Definitions

  • the invention relates to an applicator for a cosmetic product, in particular mascara.
  • the invention further relates to a method for the manufacture of such an applicator.
  • the mascara applicators can be injection molded of plastic material, they are then commonly called “plastic brushes”. They can also be obtained from fibrous elements held between the longitudinal portions of a twisted metal pin; they are then commonly called “twisted brushes”.
  • the applicators for mascara have a core, or central portion, and spikes extending radially around said core. The ends of said spikes usually form envelopes in a direction of longitudinal extension of said brush.
  • the spikes of twisted brushes are commonly called “fibers”.
  • plastic brushes of the prior art have pin distributions around the core that allow the realization of complex envelopes favoring makeup. With regard to twisted brushes, such characteristics seem more difficult to obtain, unless fiber-cutting operations are used along paths that are difficult to implement.
  • the invention proposes to make a twisted brush whose fibers, at their ends, form a complex envelope, having advantageous characteristics in terms of makeup, while remaining relatively simple to obtain.
  • the invention relates to an applicator for a cosmetic product, in particular mascara, comprising a twisted core and fibers that extend from the core while being held by said core, said core having a principal longitudinal extension direction, said main axis, said core being rectilinear along said main axis.
  • the fibers form an envelope with their free end, said envelope comprising faces that alternate around the main axis, said faces being curved, a section made transversely to the main axis, said cross section, having a substantially polygonal shape so as to form edges between said curved faces.
  • said faces are each generated by a straight line, said generator line, orthogonal to the main axis and orthogonal to the plane of symmetry of said face.
  • the invention therefore proposes a twisted brush which has ridges around the periphery of the envelope formed by the fibers that compose it. This has the advantage of causing the eyelashes of a user through a gripping effect thereof by the edges, said ridges forming ridges. Thus, the eyelashes of a user are thus lengthened, bent and / or combed effectively. Moreover, keeping a section of polygonal shape avoids too much manufacturing complexity.
  • the twisted brush thus produced has the advantage of having a distribution of fibers whose ends form a complex envelope around its core by using operations which remain simple to implement by a cutting step.
  • the invention also relates to a receptacle for a cosmetic product, in particular mascara, capable of containing an applicator as described above.
  • the invention relates to an applicator 10 for a cosmetic product, in particular mascara, comprising a twisted core 12 and fibers which extend from the core 12 while being held by said core 12.
  • the core 12 is here formed by a metal rod, or pin, having two branches, or longitudinal portions, optionally interconnected by a curved portion. Said metal rod is, for example, folded in two so as to form a "U", the branches of the U is then twisted together.
  • the fibers extend from the core 12 between a distal end 16 and a proximal end 14 of the core 12.
  • the fibers each have a free end and form an envelope E with.
  • the Figures 1 to 8 illustrate in particular four embodiments of envelope E according to the invention. Envelope printing will of course be more or less present depending on the density of the fibers.
  • the applicator 10 extends in a principal direction of longitudinal extension, or main axis, which is marked X on the Figures 1 to 8 .
  • This axis X is also the axis of the soul 12.
  • the soul 12 will be straight.
  • the fibers extend transversely, in particular radially, from the core 12, that is to say to form the envelope E with their free end, between the distal 16 and proximal ends 14 of the core 12.
  • These ends 14, 16 are opposite to the axis X and are spaced along said axis X by a distance marked H on the figures 1 , 3 , 5 and 7 .
  • the distance H is, for example, between 22mm and 30mm, and substantially equal, for example, to 22.5mm or 26mm, or even 27mm.
  • the proximal end 14 is here extended by a portion of the stem devoid of fibers.
  • the F1-F4 faces preferably each have a plane of symmetry comprising the main axis X.
  • said F1-F4 faces are generated by a straight line, said generator line, orthogonal to the core 12 and orthogonal to the plane of symmetry of each of said F1-F4 faces.
  • the envelope has a cross section in a plane substantially orthogonal to said axis X, whose shape is a polygon, all along said core 12, from said distal end 16 to said proximal end 14, said shape being in particular a quadrilateral , or even a rectangle, in particular at the intermediate line 15.
  • At least two consecutive faces of said four faces F1-F4 have a curved profile along said main axis X.
  • the four faces F1-F4 have a curved profile along said main axis X.
  • the substantially polygonal shape of the cross section of the envelope E gives various possibilities for the envelope E.
  • Each of these possibilities being an envelope E having edges between said F1-F4 faces.
  • envelope E has curved faces F1-F4 with varying slopes or inclinations that change direction from one face F1, F3 to another F2, F4.
  • the alternation of slopes, or inclinations is from the distal end 16 to the proximal end 14.
  • the envelope E therefore has recesses alternating with reliefs around said core 12, that is to say by turning around said core in a plane orthogonal thereto and this, advantageously, all along the core 12, from its distal end 16 to its proximal end 14.
  • the recesses are located in the vicinity of an intermediate line 15 located between the distal end 16 and proximal ends 14.
  • Said intermediate line 15 belongs to a plane substantially orthogonal to the X axis which comprises an intermediate point of the X axis, said point being advantageously equidistant from said ends 14, 16.
  • the distance h15 separating the proximal end 14 of this intermediate line 15, along said axis X, is substantially equal, for example, to 13 mm.
  • This intermediate line 15 is an imaginary line which follows the periphery of the envelope E.
  • the envelope E of the embodiment illustrated on the Figures 1 and 2 therefore comprises a pair of substantially convex curved faces F2, F4 of the distal end 16 at the proximal end 14 of the core 12.
  • figure 1 illustrates the face F2 by its contours, in a plane (that of the sheet); however, the curvature in the space of said face F2 is visible on the figure 2 where she is represented in profile.
  • the envelope E of the embodiment illustrated on the Figures 1 and 2 further comprises a pair of substantially concave curved faces F1, F3 from the distal end 16 to the proximal end 14 of the core 12 (illustrated in FIG. figure 2 but whose curvature in space is visible on the figure 1 ).
  • the depressions are located between the distal end 16 and the intermediate line 15 and in the vicinity of the proximal end 14, while the reliefs are located near the proximal end 16 and between the intermediate line 15 and the proximal end 14.
  • the depressions are located in the vicinity of the distal end 16 and between the intermediate line 15 and the proximal end 14, while the reliefs are located between the distal end 16 and the intermediate line 15 and in the vicinity of the proximal end 14.
  • the envelope E of the embodiment of the Figures 3 and 4 therefore comprises a pair of curved faces F1, F3 which have a concave corrugation of the distal end 16 to said intermediate line 15 and a convex corrugation of said intermediate line 15 to the proximal end 14; the contour of these faces F1, F3 is represented at the figure 4 but their curvature in space is visible only on the figure 3 , said faces F1, F3 being viewed in profile.
  • the envelope E of the embodiment of the Figures 3 and 4 further comprises a pair of curved faces F2, F4 which have a convex corrugation of the distal end 16 to said intermediate line 15 and a concave corrugation of said intermediate line 15 at the proximal end 14; the contour of these faces F2, F4 is represented at the figure 3 , their curvature in space being visible on the figure 4 .
  • the concave curvatures mentioned above will advantageously have a radius of curvature, marked Rmin on the Figures 3 and 4 which is between 15 and 20mm and is substantially equal to 17mm.
  • the convex curvatures mentioned above will advantageously have a radius of curvature Rmax between 17.5 and 22.5mm and substantially equal to 20mm.
  • the figure 9 represents the superposition of the two sections marked AA and BB on the figure 4 , namely a first section of the envelope E made between the distal end 16 and the intermediate level 15, marked SA on the figure 9 , and a second section made between the intermediate level 15 and the proximal end 14, marked SB on the same figure 9 .
  • these two sections SA, SB are rectangles whose lengths are angularly offset by 90 ° around the main axis X.
  • the shape of the cross section of the envelope E has two distinct points of said axis main X, an orientation with respect to said main axis X which differs, in particular an angular orientation around said main axis which differs.
  • the face F1 is formed by the free ends of radial extension fibers shorter than those forming the same face F1 at the location of the section SB.
  • the F1 face is framed by the faces F2 and F4 which each have a convex zone - respectively concave - at the location of said section SA - respectively of said section SB. This means that said face F1 will extend over a length of rectangle at the location of the section SA rather than a width of the same rectangle as is the case at the location of the section SB.
  • the face F1 has a length close to the main axis X and, at the location of the section SB, a width farther from the main axis X.
  • the shape of the cross section of the envelope E also has, at two points distinct from said main axis X, an orientation with respect to said main axis X which differs, in particular an angular orientation around said main axis X which differs.
  • envelopes E of the two embodiments which have just been described with the Figures 1 to 4 and 9 each comprise two pairs of faces F1, F3 and F2, F4, symmetrical two by two with respect to a median plane comprising the core 12.
  • Each face belonging to one of said pairs is opposed to the other face of said pair with respect to the core of the brush, or even symmetrical with respect to a median plane passing through the core, and the two faces of the same pair will have the same slopes, or inclinations, to the nearest sign, slopes or inclinations changing direction from one pair of faces to another. More precisely, said slopes, or inclinations, reverse direction from one pair of faces to another.
  • the envelope E comprises, along said main axis X, a substantially concave face F1 and a substantially convex face F3, opposite.
  • the concave face is marked F1 on the figure 5 .
  • This concave face F1 has an extremum in the vicinity of the intermediate line 15.
  • the convex face, opposite the concave face F1, is marked F3.
  • This convex face F3 has an extremum in the vicinity of the intermediate line 15.
  • opposite face is meant the face F3 which is opposite to the concave face F1 with respect to the core 12. In other words, the opposite faces F1, F3 are not in contact.
  • the figure 6 illustrates the applicator 10 when viewed from the side with respect to the figure 5 .
  • the shape of two faces F2, F4 which are the faces connecting said two faces F1, F3 concave and convex which have just been described. These faces F2, F4 will be called bonding faces thereafter.
  • These two connecting faces F2, F4 are here substantially convex. Said two connecting faces F2, F4 have, in particular, an extremum in the vicinity of the intermediate line 15.
  • figure 5 illustrates the face F2 by its contours, in a plane (that of the sheet); however, the curvature in the space of said face F2 is visible on the figure 2 where she is represented in profile.
  • the concave face F1 illustrated on the figure 6 by its outlines, presents a curvature in space that is particularly visible on the figure 5 .
  • the figure 10 represents the superposition of the two sections marked CC and DD on the figure 6 , namely a first section of the envelope E made at the intermediate level 15, marked SC on the figure 10 , and a second section made at the proximal end 14, labeled SD on the same figure 10 .
  • these two sections SC, SD are rectangles whose size and different orientation about the main axis X.
  • the shape of the cross section of the envelope E has two points distinct from said main axis X, an orientation with respect to said main axis X which differs, in particular an angular orientation about said main axis X which differs.
  • the face F1 is formed by the free ends of fibers of radial extensions shorter than those forming the same face F1 at the location of the section SD.
  • the F1 face is framed by the faces F2 and F4 as shown on the figure 10 .
  • Said two faces F2 and F4 each have a convex zone having their curved portion outwardly, with respect to the main axis X, at the location of said section SC.
  • said face F1 will extend over a length of rectangle at the location of the section SC rather than a width of the same rectangle as is the case at the location of the section SD.
  • the face F1 has a length close to the main axis X and, at the location of the section SD, a width farther from the main axis X.
  • the envelope E of the embodiment which has just been described with the Figures 5, 6 and 10 - Third embodiment, has two pairs of faces F1, F3 and F2, F4.
  • One of the pairs of faces comprises faces F2, F4 symmetrical with respect to a median plane comprising the core 12; these are the so-called connecting faces F2, F4.
  • the other pair of faces F1, F3 substantially follow the same curve along the main axis X (see figure 5 ).
  • This envelope E has the advantage of bending and loading the eyelashes of the user optimally because it has a concave face formed by fibers of small radial extensions which have a high charging power.
  • the envelope E comprises, along said main axis X, curved faces opposed in pairs relative to the main axis X, which have the same S-shaped corrugated profile, in particular from the distal end 16 to the proximal end 14 of the core 12.
  • the envelope E of the embodiment of the Figures 7 and 8 comprises a pair of curved faces F1, F3 which have an S-shaped corrugation along the main axis X which, when the applicator of the invention is seen from the front - the observer looking at the face F2 - presents the following forms: for F1, a concave shape of the distal end 16 to the intermediate line 15 and convex of the intermediate line 15 to the proximal end 14, and for F3, a convex shape of the distal end 16 to the line intermediate 15 and concave of the intermediate line 15 to the proximal end 14 (see figure 7 ).
  • the shape of the cross section of the envelope E also has, at two points distinct from said main axis X, an orientation with respect to said main axis X which differs.
  • an orientation with respect to said main axis X which differs.
  • a shape will be obtained substantially square, substantially centered on the main axis X and, by making a section near the distal end 14, a square shape off-center, or off-axis, with respect to said main axis X.
  • the concave curvatures mentioned above will advantageously have a radius of curvature, marked Rmin , which is between 15 and 20mm and which is substantially equal to 17mm.
  • the convex curvatures mentioned above will advantageously have a radius of curvature Rmax between 17.5 and 22.5mm and substantially equal to 20mm.
  • the profile of the envelope E which has just been described - fourth embodiment - has advantageous makeup possibilities. Indeed, it makes it possible to make up a fringe of eyelashes with intensities that differ for the eyelashes that compose it.
  • edges - or lateral edges - are curves set in a three-dimensional orthonormal Cartesian coordinate system, one of said dimensions being coincident with the direction of said X axis, the coordinates of said parameterized curves moving in the three directions of said Cartesian coordinate system and said curves. parametrized at no point between said distal 16 and proximal 14 ends.
  • Said edges therefore have a complex layout although obtained with faces that remain easy to achieve. This pattern is particularly advantageous for hanging eyelashes and lengthen them.
  • the envelope of the applicator 10 may have chamfers 20 at some of its faces, at the distal end 16 of the core 12.
  • the Distal end 16 is usually the one through which contact with the receptacle is made when the user tidies the applicator 10 after use.
  • the envelope comprises at least two opposite faces F1, F3, with chamfers 20 symmetrical with respect to a median plane passing through said core 12. The height of these chamfers 20 will be between 0 (absence of chamfers) and 5mm .
  • dint corresponds to a bulk of the envelope E in the particular case of the fourth embodiment.
  • dint will be between 4.5 and 6.5mm (see figure 7 ).
  • the invention also relates to a process for the manufacture of an applicator for a cosmetic product, in particular mascara, for example that which has just been described.
  • This method first comprises a step of positioning a plurality of fibers between longitudinal portions of a spindle (not shown).
  • the fibers are distributed in such a way that said longitudinal portions pass substantially in the middle of each of said fibers.
  • the next step of said method is a first step of twisting said pin to form a twisted pin having fibers extending radially around it.
  • the ends of said fibers then form a cylindrical envelope extending in a direction of longitudinal extension around said pin.
  • the fibers are distributed as fiber turns because of the twisting of the spindle.
  • the following step is a step of cutting the fibers, so that said fibers form an envelope E with their free end, said envelope E comprising faces F1-F4 which alternate around the main axis X, said faces F1-F4 being curved, a section made transversely to the main axis X, said cross section, having a substantially polygonal shape so as to form edges between said curved faces F1-F4.
  • Said cutting may be numerically controlled. During all these operations, said twisted rod is kept rectilinear.
  • the portion of the fiber-free spindle which extends the proximal end 14 will be intended to be fixed inside a hollow rod, itself linked to a handle by which the user will manipulate said applicator. Said portion is twisted or not.
  • the applicator of the invention advantageously forms a brush.
  • the number of four faces is not limiting and the applicator 10 may have three or even four or six pairs of faces opposite two by two, this without departing from the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Brushes (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un applicateur (10) pour produit cosmétique, notamment mascara, comprenant une âme torsadée (12) et des fibres qui s'étendent à partir de l'âme (12) en étant maintenues par ladite âme (12), ladite âme (12) présentant une direction d'extension longitudinale principale, dite axe principal (X), ladite âme (12) étant rectiligne le long dudit axe principal (X). Les fibres forment une enveloppe (E) avec leur extrémité libre, ladite enveloppe (E) comprenant des faces (F1-F4) qui alternent autour de l'axe principal (X), lesdites faces (F1-F4) étant courbes, une section réalisée transversalement à l'axe principal (X), dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes (F1-F4). L'invention concerne encore un procédé pour la fabrication d'un tel applicateur (10).The invention relates to an applicator (10) for a cosmetic product, in particular mascara, comprising a twisted core (12) and fibers which extend from the core (12) while being held by said core (12), said core (12) having a principal longitudinal extension direction, said main axis (X), said core (12) being rectilinear along said main axis (X). The fibers form an envelope (E) with their free end, said envelope (E) comprising faces (F1-F4) which alternate around the main axis (X), said faces (F1-F4) being curved, a section performed transversely to the main axis (X), said cross section, having a substantially polygonal shape so as to form edges between said curved faces (F1-F4). The invention further relates to a method for the manufacture of such an applicator (10).

Description

L'invention concerne un applicateur pour produit cosmétique, notamment mascara. L'invention concerne en outre un procédé pour la fabrication d'un tel applicateur.The invention relates to an applicator for a cosmetic product, in particular mascara. The invention further relates to a method for the manufacture of such an applicator.

Les applicateurs mascara peuvent être moulés par injection de matière plastique, ils sont alors communément appelées « brosses plastiques ». Ils peuvent aussi être obtenus à partir d'éléments fibreux maintenus entre les parties longitudinales d'une broche métallique torsadée ; ils sont alors communément appelés « brosses torsadées ». Les applicateurs pour mascara présentent une âme, ou partie centrale, et des picots s'étendant radialement autour de ladite âme. Les extrémités desdits picots forment habituellement des enveloppes selon une direction d'extension longitudinale de ladite brosse. Les picots des brosses torsadées sont communément appelés « les fibres ».The mascara applicators can be injection molded of plastic material, they are then commonly called "plastic brushes". They can also be obtained from fibrous elements held between the longitudinal portions of a twisted metal pin; they are then commonly called "twisted brushes". The applicators for mascara have a core, or central portion, and spikes extending radially around said core. The ends of said spikes usually form envelopes in a direction of longitudinal extension of said brush. The spikes of twisted brushes are commonly called "fibers".

Les brosses plastiques de l'art antérieur présentent des distributions de picots autour de l'âme qui permettent la réalisation d'enveloppes complexes favorisant le maquillage. Concernant les brosses torsadées, de telles caractéristiques semblent plus difficile à obtenir, à moins de faire appel à des opérations de découpe des fibres selon des trajectoires difficiles à mettre en oeuvre.The plastic brushes of the prior art have pin distributions around the core that allow the realization of complex envelopes favoring makeup. With regard to twisted brushes, such characteristics seem more difficult to obtain, unless fiber-cutting operations are used along paths that are difficult to implement.

L'invention propose de réaliser une brosse torsadée dont les fibres, par leurs extrémités, forment une enveloppe complexe, présentant des caractéristiques avantageuses en terme de maquillage, tout en restant relativement simple à obtenir.The invention proposes to make a twisted brush whose fibers, at their ends, form a complex envelope, having advantageous characteristics in terms of makeup, while remaining relatively simple to obtain.

Ainsi, l'invention concerne un applicateur pour produit cosmétique, notamment mascara, comprenant une âme torsadée et des fibres qui s'étendent à partir de l'âme en étant maintenues par ladite âme, ladite âme présentant une direction d'extension longitudinale principale, dite axe principal, ladite âme étant rectiligne le long dudit axe principal.Thus, the invention relates to an applicator for a cosmetic product, in particular mascara, comprising a twisted core and fibers that extend from the core while being held by said core, said core having a principal longitudinal extension direction, said main axis, said core being rectilinear along said main axis.

Selon l'invention, les fibres forment une enveloppe avec leur extrémité libre, ladite enveloppe comprenant des faces qui alternent autour de l'axe principal, lesdites faces étant courbes, une section réalisée transversalement à l'axe principal, dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes. Autrement dit, lesdites faces sont chacune générée par une droite, dite droite génératrice, orthogonale à l'axe principal et orthogonale au plan de symétrie de ladite face.According to the invention, the fibers form an envelope with their free end, said envelope comprising faces that alternate around the main axis, said faces being curved, a section made transversely to the main axis, said cross section, having a substantially polygonal shape so as to form edges between said curved faces. In other words, said faces are each generated by a straight line, said generator line, orthogonal to the main axis and orthogonal to the plane of symmetry of said face.

L'invention propose donc une brosse torsadée qui présentent des arêtes sur le pourtour de l'enveloppe formée par les fibres qui la composent. Cela présente l'avantage d'entrainer les cils d'un utilisateur grâce un effet d'accroche de ceux-ci par les arêtes, lesdites arêtes formant des lignes de crêtes. Ainsi, les cils d'un utilisateur sont donc allongés, courbés et/ou peignés efficacement. Par ailleurs, garder une section de forme polygonale permet d'éviter une trop grande complexité de fabrication.The invention therefore proposes a twisted brush which has ridges around the periphery of the envelope formed by the fibers that compose it. This has the advantage of causing the eyelashes of a user through a gripping effect thereof by the edges, said ridges forming ridges. Thus, the eyelashes of a user are thus lengthened, bent and / or combed effectively. Moreover, keeping a section of polygonal shape avoids too much manufacturing complexity.

L'utilisation d'une brosse torsadée permet, en outre, une plus grande densité de fibres qu'avec les picots des brosses plastiques.The use of a twisted brush allows, in addition, a greater density of fibers than with the pins of the plastic brushes.

Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • la forme de ladite section transversale présente, en deux points distincts dudit axe principal, une orientation par rapport audit axe principal qui diffère, notamment une orientation angulaire autour dudit axe principal qui diffère,
  • l'âme présente une extrémité distale et une extrémité proximale, l'extrémité proximale étant opposée à l'extrémité distale le long de l'axe principal,
  • lesdites fibres sont réparties le long de l'âme, sur une partie substantielle de sa longueur à partir de l'extrémité distale et sensiblement jusqu'à l'extrémité proximale,
  • ladite âme est constituée d'une tige torsadée,
  • ladite extrémité proximale de l'âme est prolongée par une portion de la tige dépourvue de fibres,
  • lesdites faces présentent un plan de symétrie comprenant ledit axe principal,
  • tout ou partie desdites faces courbes sont symétriques deux à deux par rapport à un plan comprenant l'axe principal,
  • une paire desdites faces courbes symétriques présente un profil sensiblement convexe le long de l'axe principal, notamment de l'extrémité distale à l'extrémité proximale de l'âme,
  • une paire desdites faces courbes symétriques présentent un profil sensiblement concave le long de l'axe principal, notamment de l'extrémité distale à l'extrémité proximale de l'âme,
  • une et une seule desdites faces courbes présente un profil sensiblement concave le long de l'axe principal, notamment de l'extrémité distale à l'extrémité proximale de l'âme,
  • une paire desdites faces courbes, opposées par rapport à l'axe principal, présente un même profil ondulé en forme de S,
  • l'âme présente un niveau situé entre ses extrémités distale et proximale, dit niveau intermédiaire, notamment sensiblement équidistant desdites extrémités distale et proximale,
  • l'enveloppe comporte deux paires de faces symétriques par rapport audit axe principal, une première paire de faces présentant une ondulation concave de l'extrémité distale audit niveau intermédiaire et une ondulation convexe dudit niveau intermédiaire à l'extrémité proximale et une seconde paire de faces présentant une ondulation convexe de l'extrémité distale audit niveau intermédiaire et une ondulation concave dudit niveau intermédiaire à l'extrémité proximale,
  • ladite enveloppe présente un chanfrein au niveau d'au moins une de ses faces, à l'extrémité distale de ladite âme,
  • l'applicateur forme une brosse.
According to various embodiments of the invention, which may be taken together or separately:
  • the shape of said cross-section has, at two points distinct from said main axis, an orientation with respect to said main axis which differs, in particular an angular orientation about said main axis which differs,
  • the core has a distal end and a proximal end, the proximal end being opposite to the distal end along the major axis,
  • said fibers are distributed along the core, over a substantial portion of its length from the distal end and substantially to the proximal end,
  • said core consists of a twisted rod,
  • said proximal end of the core is extended by a portion of the fiber-free stem,
  • said faces have a plane of symmetry comprising said main axis,
  • all or part of said curved faces are symmetrical two by two with respect to a plane comprising the main axis,
  • a pair of said symmetrical curved faces has a substantially convex profile along the main axis, in particular from the distal end to the proximal end of the core,
  • a pair of said symmetrical curved faces have a substantially concave profile along the main axis, in particular from the distal end to the proximal end of the core,
  • one and only one of said curved faces has a substantially concave profile along the main axis, in particular from the distal end to the proximal end of the core,
  • a pair of said curved faces, opposite to the main axis, has the same S-shaped corrugated profile,
  • the core has a level located between its distal and proximal ends, said intermediate level, in particular substantially equidistant from said distal and proximal ends,
  • the envelope comprises two pairs of faces symmetrical with respect to said main axis, a first pair of faces having a concave corrugation of the distal end to said intermediate level and a convex corrugation of said intermediate level to the proximal end and a second pair of faces having a convex corrugation of the distal end at said intermediate level and a concave undulation of said intermediate level at the proximal end,
  • said envelope has a chamfer at at least one of its faces, at the distal end of said core,
  • the applicator forms a brush.

L'invention concerne aussi un procédé pour la fabrication d'un applicateur pour produit cosmétique, notamment mascara, ledit procédé comprenant :

  • une étape de positionnement d'une pluralité de fibres entre des parties longitudinales d'une broche, puis
  • une première étape de torsion de ladite broche pour former une broche torsadée présentant des fibres s'étendant radialement autour d'elle, les extrémités desdites fibres formant une enveloppe cylindrique s'étendant dans une direction d'extension longitudinale autour de la dite broche, puis
  • une étape de découpe des fibres, de manière à ce que lesdites fibres forment une enveloppe avec leur extrémité libre, ladite enveloppe comprenant des faces qui alternent autour de l'axe principal, lesdites faces étant courbes, une section réalisée transversalement à l'axe principal, dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes, notamment la forme de la section transversale de l'enveloppe présente, en deux points distincts dudit axe principal, une orientation par rapport audit axe principal qui diffère, notamment une orientation angulaire autour dudit axe principal qui diffère.
The invention also relates to a process for the manufacture of an applicator for a cosmetic product, in particular mascara, said process comprising:
  • a step of positioning a plurality of fibers between longitudinal portions of a pin, and
  • a first step of twisting said pin to form a twisted pin having fibers extending radially around it, the ends of said fibers forming a cylindrical shell extending in a direction of longitudinal extension around said pin, then
  • a step of cutting the fibers, so that said fibers form an envelope with their free end, said envelope comprising faces that alternate around the main axis, said faces being curved, a section made transversely to the main axis , said cross section, having a substantially polygonal shape so as to form edges between said curved faces, in particular the shape of the cross section of the envelope has, at two points distinct from said main axis, an orientation with respect to said main axis which differs, in particular an angular orientation about said main axis which differs.

La brosse torsadée ainsi fabriquée présente l'avantage de comporter une répartition des fibres dont les extrémités forment une enveloppe complexe autour de son âme en faisant appel à des opérations qui restent simples à mettre en oeuvre par une étape de découpe.The twisted brush thus produced has the advantage of having a distribution of fibers whose ends form a complex envelope around its core by using operations which remain simple to implement by a cutting step.

Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • ladite broche torsadée est maintenue rectiligne,
  • ledit procédé comprend une seconde étape de torsion de ladite broche après ladite étape de découpe des fibres,
  • ladite découpe est à commande numérique.
According to various embodiments of the invention, which may be taken together or separately:
  • said twisted spindle is kept rectilinear,
  • said method comprises a second step of twisting said pin after said step of cutting fibers,
  • said cutout is numerically controlled.

L'invention concerne encore un réceptacle pour produit cosmétique, notamment mascara, apte à contenir un applicateur tel que décrit ci-avant.The invention also relates to a receptacle for a cosmetic product, in particular mascara, capable of containing an applicator as described above.

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent in the following detailed explanatory description of at least one embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings.

Sur ces dessins :

  • la figure 1 est une vue de face d'un premier mode de réalisation d'un applicateur selon l'invention,
  • la figure 2 représente l'applicateur de la figure 1 après que celui-ci ait été tourné d'un quart de tour autour de son axe longitudinal,
  • la figure 3 est une vue de face d'un second mode de réalisation d'un applicateur selon l'invention,
  • la figure 4 représente l'applicateur de la figure 3 après que celui-ci ait été tourné d'un quart de tour autour de son axe longitudinal,
  • la figure 5 est une vue de face d'un troisième mode de réalisation d'un applicateur selon l'invention,
  • la figure 6 représente l'applicateur de la figure 5 après que celui-ci ait été tourné d'un quart de tour autour de son axe longitudinal,
  • la figure 7 représente une vue d'un quatrième mode de réalisation d'un applicateur selon l'invention,
  • la figure 8 représente l'applicateur de la figure 7 après que celui-ci ait été tourné d'un demi-tour autour de son axe longitudinal,
  • la figure 9 représente la superposition des deux sections repérées A-A et B-B sur la figure 4,
  • la figure 10 représente la superposition des deux sections repérées C-C et D-D sur la figure 6.
On these drawings:
  • the figure 1 is a front view of a first embodiment of an applicator according to the invention,
  • the figure 2 represents the applicator of the figure 1 after it has been rotated a quarter turn around its longitudinal axis,
  • the figure 3 is a front view of a second embodiment of an applicator according to the invention,
  • the figure 4 represents the applicator of the figure 3 after it has been rotated a quarter turn around its longitudinal axis,
  • the figure 5 is a front view of a third embodiment of an applicator according to the invention,
  • the figure 6 represents the applicator of the figure 5 after it has been rotated a quarter turn around its longitudinal axis,
  • the figure 7 represents a view of a fourth embodiment of an applicator according to the invention,
  • the figure 8 represents the applicator of the figure 7 after it has been turned half a turn around its longitudinal axis,
  • the figure 9 represents the superposition of the two sections marked AA and BB on the figure 4 ,
  • the figure 10 represents the superposition of the two sections marked CC and DD on the figure 6 .

L'invention concerne un applicateur 10 pour produit cosmétique, notamment mascara, comprenant une âme torsadée 12 et des fibres qui s'étendent à partir de l'âme 12 en étant maintenues par ladite âme 12.The invention relates to an applicator 10 for a cosmetic product, in particular mascara, comprising a twisted core 12 and fibers which extend from the core 12 while being held by said core 12.

L'âme 12 est ici formée par une tige métallique, ou broche, comportant deux branches, ou parties longitudinales, éventuellement reliées entre elles par une partie courbée. Ladite tige métallique est, par exemple, pliée en deux de sorte à former un « U », les branches du U étant ensuite torsadée entre elles.The core 12 is here formed by a metal rod, or pin, having two branches, or longitudinal portions, optionally interconnected by a curved portion. Said metal rod is, for example, folded in two so as to form a "U", the branches of the U is then twisted together.

Les fibres s'étendent à partir de l'âme 12, entre une extrémité distale 16 et une extrémité proximale 14 de l'âme 12. Les fibres présentent chacune une extrémité libre et forment une enveloppe E avec. Les figures 1 à 8 illustrent en particulier quatre exemples de réalisation d'enveloppe E selon l'invention. L'impression d'enveloppe sera bien sûr plus ou moins présente en fonction de la densité des fibres.The fibers extend from the core 12 between a distal end 16 and a proximal end 14 of the core 12. The fibers each have a free end and form an envelope E with. The Figures 1 to 8 illustrate in particular four embodiments of envelope E according to the invention. Envelope printing will of course be more or less present depending on the density of the fibers.

L'applicateur 10 s'étend suivant une direction principale d'extension longitudinale, ou axe principal, qui est repéré X sur les figures 1 à 8. Cet axe X est aussi l'axe de l'âme 12. L'âme 12 sera donc droite.The applicator 10 extends in a principal direction of longitudinal extension, or main axis, which is marked X on the Figures 1 to 8 . This axis X is also the axis of the soul 12. The soul 12 will be straight.

Les fibres s'étendent transversalement, en particulier radialement, à partir de l'âme 12, c'est-à-dire pour former l'enveloppe E avec leur extrémité libre, entre les extrémités distale 16 et proximale 14 de l'âme 12. Ces extrémités 14, 16 sont opposées par rapport à l'axe X et sont écartées, le long dudit axe X, d'une distance repérée H sur les figures 1, 3, 5 et 7. La distance H est comprise, par exemple, entre 22mm et 30mm, et sensiblement égale, par exemple, à 22,5mm ou à 26mm, voire à 27mm. Il est à noter que l'extrémité proximale 14 est ici prolongée par une portion de la tige dépourvue de fibres.The fibers extend transversely, in particular radially, from the core 12, that is to say to form the envelope E with their free end, between the distal 16 and proximal ends 14 of the core 12. These ends 14, 16 are opposite to the axis X and are spaced along said axis X by a distance marked H on the figures 1 , 3 , 5 and 7 . The distance H is, for example, between 22mm and 30mm, and substantially equal, for example, to 22.5mm or 26mm, or even 27mm. It should be noted that the proximal end 14 is here extended by a portion of the stem devoid of fibers.

Les faces F1-F4 présentent, de préférence, chacune un plan de symétrie comprenant l'axe principal X. De plus, lesdites faces F1-F4 sont générées par une droite, dite droite génératrice, orthogonale à l'âme 12 et orthogonale au plan de symétrie de chacune desdites faces F1-F4. Ainsi, l'enveloppe présente une section transversale dans un plan sensiblement orthogonal audit axe X, dont la forme est un polygone, tout le long de ladite âme 12, de ladite extrémité distale 16 à ladite extrémité proximale 14, ladite forme étant notamment un quadrilatère, voire un rectangle, en particulier au niveau de la ligne intermédiaire 15. Au moins deux faces consécutives desdites quatre faces F1-F4 présentent un profil courbe le long dudit axe principal X.The F1-F4 faces preferably each have a plane of symmetry comprising the main axis X. In addition, said F1-F4 faces are generated by a straight line, said generator line, orthogonal to the core 12 and orthogonal to the plane of symmetry of each of said F1-F4 faces. Thus, the envelope has a cross section in a plane substantially orthogonal to said axis X, whose shape is a polygon, all along said core 12, from said distal end 16 to said proximal end 14, said shape being in particular a quadrilateral , or even a rectangle, in particular at the intermediate line 15. At least two consecutive faces of said four faces F1-F4 have a curved profile along said main axis X.

Dans les modes de réalisation ici représentés, les quatre faces F1-F4 présentent un profil courbe le long dudit axe principal X.In the embodiments shown here, the four faces F1-F4 have a curved profile along said main axis X.

Selon l'invention, la forme sensiblement polygonale de la section transversale de l'enveloppe E donne des possibilités diverses pour l'enveloppe E. Chacune de ces possibilités étant une enveloppe E présentant des arêtes entre lesdites faces F1-F4.According to the invention, the substantially polygonal shape of the cross section of the envelope E gives various possibilities for the envelope E. Each of these possibilities being an envelope E having edges between said F1-F4 faces.

Dans le mode de réalisation illustré sur les figures 1 et 2 ainsi que dans le mode de réalisation illustré sur les figures 3 et 4, l'enveloppe E présente des faces courbées F1-F4 avec des pentes ou inclinaisons variables qui changent de direction d'une face F1, F3 à l'autre F2, F4. En plus de ces changement de direction d'une face à l'autre, l'alternance de pentes, ou inclinaisons, se fait de l'extrémité distale 16 à l'extrémité proximale 14. L'enveloppe E présente donc des creux alternant avec des reliefs autour de ladite âme 12, c'est-à-dire en tournant autour de ladite âme dans un plan orthogonal à celle-ci et ceci, avantageusement, tout le long de l'âme 12, de son extrémité distale 16 à son extrémité proximale 14.In the embodiment illustrated on the Figures 1 and 2 as well as in the embodiment illustrated on the Figures 3 and 4 , envelope E has curved faces F1-F4 with varying slopes or inclinations that change direction from one face F1, F3 to another F2, F4. In addition to these changes of direction from one face to another, the alternation of slopes, or inclinations, is from the distal end 16 to the proximal end 14. The envelope E therefore has recesses alternating with reliefs around said core 12, that is to say by turning around said core in a plane orthogonal thereto and this, advantageously, all along the core 12, from its distal end 16 to its proximal end 14.

Ainsi, sur la figure 1, les creux sont situés au voisinage d'une ligne intermédiaire 15 située entre les extrémités distale 16 et proximale 14. Ladite ligne intermédiaire 15 appartient à un plan sensiblement orthogonal à l'axe X qui comprend un point intermédiaire de l'axe X, ledit point étant avantageusement équidistant desdites extrémités 14, 16. La distance h15 séparant l'extrémité proximale 14 de cette ligne intermédiaire 15, suivant ledit axe X, est sensiblement égale, par exemple, à 13mm. Cette ligne intermédiaire 15 est une ligne imaginaire qui suit le pourtour de l'enveloppe E.So, on the figure 1 , the recesses are located in the vicinity of an intermediate line 15 located between the distal end 16 and proximal ends 14. Said intermediate line 15 belongs to a plane substantially orthogonal to the X axis which comprises an intermediate point of the X axis, said point being advantageously equidistant from said ends 14, 16. The distance h15 separating the proximal end 14 of this intermediate line 15, along said axis X, is substantially equal, for example, to 13 mm. This intermediate line 15 is an imaginary line which follows the periphery of the envelope E.

A contrario, lorsque l'applicateur 10 est observé de côté, comme illustré sur la figure 2, les creux sont proches des extrémités distale et proximale 14, 16 et les reliefs, proches de la ligne intermédiaire 15.On the contrary, when the applicator 10 is viewed from the side, as illustrated on the figure 2 , the depressions are close to the distal and proximal ends 14, 16 and the reliefs, close to the intermediate line 15.

L'enveloppe E du mode de réalisation illustré sur les figures 1 et 2 comporte donc une paire de faces courbées sensiblement convexes F2, F4 de l'extrémité distale 16 à l'extrémité proximale 14 de l'âme 12.The envelope E of the embodiment illustrated on the Figures 1 and 2 therefore comprises a pair of substantially convex curved faces F2, F4 of the distal end 16 at the proximal end 14 of the core 12.

Il est à noter que la figure 1 illustre la face F2 par ses contours, dans un plan (celui de la feuille) ; cependant, la courbure dans l'espace de ladite face F2 est visible sur la figure 2 où elle est représentée de profil.It should be noted that figure 1 illustrates the face F2 by its contours, in a plane (that of the sheet); however, the curvature in the space of said face F2 is visible on the figure 2 where she is represented in profile.

L'enveloppe E du mode de réalisation illustré sur les figures 1 et 2 comporte, en outre, une paire de faces courbées sensiblement concaves F1, F3 de l'extrémité distale 16 à l'extrémité proximale 14 de l'âme 12 (illustrées à la figure 2 mais dont la courbure dans l'espace est visible sur la figure 1).The envelope E of the embodiment illustrated on the Figures 1 and 2 further comprises a pair of substantially concave curved faces F1, F3 from the distal end 16 to the proximal end 14 of the core 12 (illustrated in FIG. figure 2 but whose curvature in space is visible on the figure 1 ).

Dans le mode de réalisation illustré par les figures 3 et 4, les creux sont situés entre l'extrémité distale 16 et la ligne intermédiaire 15 ainsi qu'au voisinage de l'extrémité proximale 14, tandis que les reliefs sont situés au voisinage de l'extrémité proximale 16 ainsi qu'entre la ligne intermédiaire 15 et l'extrémité proximale 14.In the embodiment illustrated by the Figures 3 and 4 the depressions are located between the distal end 16 and the intermediate line 15 and in the vicinity of the proximal end 14, while the reliefs are located near the proximal end 16 and between the intermediate line 15 and the proximal end 14.

A contrario, lorsque l'applicateur 10 est observé de côté, comme illustré sur la figure 4, les creux sont situés au voisinage de l'extrémité distale 16 ainsi qu'entre la ligne intermédiaire 15 et l'extrémité proximale 14, tandis que les reliefs sont situés entre l'extrémité distale 16 et la ligne intermédiaire 15 ainsi qu'au voisinage de l'extrémité proximale 14.On the contrary, when the applicator 10 is viewed from the side, as illustrated on the figure 4 the depressions are located in the vicinity of the distal end 16 and between the intermediate line 15 and the proximal end 14, while the reliefs are located between the distal end 16 and the intermediate line 15 and in the vicinity of the proximal end 14.

L'enveloppe E du mode de réalisation des figures 3 et 4 comporte donc une paire de faces courbées F1, F3 qui présentent une ondulation concave de l'extrémité distale 16 à ladite ligne intermédiaire 15 et une ondulation convexe de ladite ligne intermédiaire 15 à l'extrémité proximale 14; le contour de ces faces F1, F3 est représenté à la figure 4 mais leur courbure dans l'espace n'est visible que sur la figure 3, lesdites faces F1, F3 y étant vues de profil.The envelope E of the embodiment of the Figures 3 and 4 therefore comprises a pair of curved faces F1, F3 which have a concave corrugation of the distal end 16 to said intermediate line 15 and a convex corrugation of said intermediate line 15 to the proximal end 14; the contour of these faces F1, F3 is represented at the figure 4 but their curvature in space is visible only on the figure 3 , said faces F1, F3 being viewed in profile.

L'enveloppe E du mode de réalisation des figures 3 et 4 comporte, en outre, une paire de faces courbées F2, F4 qui présentent une ondulation convexe de l'extrémité distale 16 à ladite ligne intermédiaire 15 et une ondulation concave de ladite ligne intermédiaire 15 à l'extrémité proximale 14 ; le contour de ces faces F2, F4 est représenté à la figure 3, leur courbure dans l'espace étant visible sur la figure 4.The envelope E of the embodiment of the Figures 3 and 4 further comprises a pair of curved faces F2, F4 which have a convex corrugation of the distal end 16 to said intermediate line 15 and a concave corrugation of said intermediate line 15 at the proximal end 14; the contour of these faces F2, F4 is represented at the figure 3 , their curvature in space being visible on the figure 4 .

A titre d'exemple, les courbures concaves évoquées ci-dessus présenteront avantageusement un rayon de courbure, repéré Rmin sur les figures 3 et 4, qui est compris entre 15 et 20mm et qui est sensiblement égal à 17mm. De même, les courbures convexes évoquées ci-dessus présenteront avantageusement un rayon de courbure Rmax compris entre 17,5 et 22,5mm et sensiblement égal à 20mm.For example, the concave curvatures mentioned above will advantageously have a radius of curvature, marked Rmin on the Figures 3 and 4 which is between 15 and 20mm and is substantially equal to 17mm. Similarly, the convex curvatures mentioned above will advantageously have a radius of curvature Rmax between 17.5 and 22.5mm and substantially equal to 20mm.

La figure 9 représente la superposition des deux sections repérées A-A et B-B sur la figure 4, à savoir une première section de l'enveloppe E réalisée entre l'extrémité distale 16 et le niveau intermédiaire 15, repérée SA sur la figure 9, et une seconde section réalisée entre le niveau intermédiaire 15 et l'extrémité proximale 14, repérée SB sur la même figure 9. On constate, sur la figure 9, que ces deux sections SA, SB sont des rectangles dont les longueurs sont décalées angulairement de 90° autour de l'axe principal X. Autrement dit, la forme de la section transversale de l'enveloppe E présente, en deux points distincts dudit axe principal X, une orientation par rapport audit axe principal X qui diffère, notamment une orientation angulaire autour dudit axe principal qui diffère.The figure 9 represents the superposition of the two sections marked AA and BB on the figure 4 , namely a first section of the envelope E made between the distal end 16 and the intermediate level 15, marked SA on the figure 9 , and a second section made between the intermediate level 15 and the proximal end 14, marked SB on the same figure 9 . On the figure 9 , that these two sections SA, SB are rectangles whose lengths are angularly offset by 90 ° around the main axis X. In other words, the shape of the cross section of the envelope E has two distinct points of said axis main X, an orientation with respect to said main axis X which differs, in particular an angular orientation around said main axis which differs.

A l'endroit de la section SA, la face F1 est formée par les extrémités libres de fibres d'extensions radiales plus courtes que celles formant la même face F1 à l'endroit de la section SB. De plus, la face F1 est encadrée par les faces F2 et F4 qui présentent chacune une zone convexe - respectivement concave - à l'endroit de ladite section SA - respectivement de ladite section SB. Cela signifie que ladite face F1 s'étendra sur une longueur de rectangle à l'endroit de la section SA plutôt que sur une largeur du même rectangle comme cela est le cas à l'endroit de la section SB. Ainsi, à l'endroit de la section SA, la face F1 présente une longueur proche de l'axe principal X et, à l'endroit de la section SB, une largeur plus éloignée de l'axe principal X.At the location of the section SA, the face F1 is formed by the free ends of radial extension fibers shorter than those forming the same face F1 at the location of the section SB. In addition, the F1 face is framed by the faces F2 and F4 which each have a convex zone - respectively concave - at the location of said section SA - respectively of said section SB. This means that said face F1 will extend over a length of rectangle at the location of the section SA rather than a width of the same rectangle as is the case at the location of the section SB. Thus, at the location of the section SA, the face F1 has a length close to the main axis X and, at the location of the section SB, a width farther from the main axis X.

Il est à noter que dans le cadre du mode de réalisation illustré par les figures 1 et 2, la forme de la section transversale de l'enveloppe E présente aussi, en deux points distincts dudit axe principal X, une orientation par rapport audit axe principal X qui diffère, notamment une orientation angulaire autour dudit axe principal X qui diffère. Par exemple, on obtiendra un rendu proche de celui de la figure 9 en effectuant une section proche du niveau intermédiaire 15 du mode de réalisation illustré aux figures 1 et 2 - la section obtenue est équivalente à la section SA de la figure 9 - et une section proche de l'extrémité proximale 14 - section équivalente à la section SB de la figure 9.It should be noted that in the context of the embodiment illustrated by the Figures 1 and 2 , the shape of the cross section of the envelope E also has, at two points distinct from said main axis X, an orientation with respect to said main axis X which differs, in particular an angular orientation around said main axis X which differs. For example, we will get a rendering close to that of the figure 9 by performing a section near the intermediate level 15 of the embodiment illustrated in FIGS. Figures 1 and 2 - the section obtained is equivalent to section SA of the figure 9 - and a section near the proximal end 14 - section equivalent to section SB of the figure 9 .

Les enveloppes E des deux modes de réalisation qui viennent d'être décrits avec les figures 1 à 4 et 9, comportent chacune deux paires de faces F1, F3 et F2, F4, symétriques deux à deux par rapport à un plan médian comprenant l'âme 12.The envelopes E of the two embodiments which have just been described with the Figures 1 to 4 and 9 , each comprise two pairs of faces F1, F3 and F2, F4, symmetrical two by two with respect to a median plane comprising the core 12.

Chaque face appartenant à une dite paire est opposée à l'autre face de ladite paire par rapport à l'âme de la brosse, voire symétrique par rapport à un plan médian passant par l'âme, et les deux faces d'une même paire auront les mêmes pentes, ou inclinaisons, au signe près, les pentes ou inclinaisons changeant de direction d'une paire de faces à l'autre. Plus précisément, lesdites pentes, ou inclinaisons, s'inversent de direction d'une paire de faces à l'autre.Each face belonging to one of said pairs is opposed to the other face of said pair with respect to the core of the brush, or even symmetrical with respect to a median plane passing through the core, and the two faces of the same pair will have the same slopes, or inclinations, to the nearest sign, slopes or inclinations changing direction from one pair of faces to another. More precisely, said slopes, or inclinations, reverse direction from one pair of faces to another.

Ainsi, lorsque l'applicateur 10 de l'invention, selon les deux modes de réalisation qui viennent d'être décrits, est vu de face, puis que l'observateur le fait tourner autour l'axe de symétrie X de son âme 12, il voit alterner des faces F1-F4 aux pentes qui changent, et plus particulièrement, des faces aux pentes qui s'inversent, ceci de manière alternée et tout le long de l'axe X.Thus, when the applicator 10 of the invention, according to the two embodiments which have just been described, is seen from the front, then that the observer rotates it around the axis of symmetry X of its core 12, he sees alternating F1-F4 faces to the changing slopes, and more particularly, faces with slopes that are reversed, this alternately and all along the X axis.

Cette alternance de pentes autour, et le long de l'âme 12, permet avantageusement de faire alterner surfaces de peignage et surfaces de charge autour et le long de l'applicateur 10.This alternation of slopes around and along the core 12 advantageously makes it possible to alternate combing surfaces and load surfaces around and along the applicator 10.

Dans le mode de réalisation illustré aux figures 5 et 6, l'enveloppe E comprend, le long dudit axe principal X, une face sensiblement concave F1 et une face sensiblement convexe F3, opposée.In the embodiment illustrated in Figures 5 and 6 , the envelope E comprises, along said main axis X, a substantially concave face F1 and a substantially convex face F3, opposite.

La face concave est repérée F1 sur la figure 5. Cette face concave F1 présente un extremum au voisinage de la ligne intermédiaire 15.The concave face is marked F1 on the figure 5 . This concave face F1 has an extremum in the vicinity of the intermediate line 15.

Sur la figure 5, la face convexe, opposée à la face concave F1, est repérée F3. Cette face convexe F3 présente un extremum au voisinage de la ligne intermédiaire 15. On entend par face opposée, la face F3 qui se trouve opposée à la face concave F1 par rapport à l'âme 12. Autrement dit, les faces opposées F1, F3 ne sont pas en contact.On the figure 5 the convex face, opposite the concave face F1, is marked F3. This convex face F3 has an extremum in the vicinity of the intermediate line 15. By opposite face is meant the face F3 which is opposite to the concave face F1 with respect to the core 12. In other words, the opposite faces F1, F3 are not in contact.

La figure 6 illustre l'applicateur 10 lorsqu'il est observé de côté par rapport à la figure 5. On peut y observer la forme de deux faces F2, F4 qui sont les faces reliant lesdites deux faces F1, F3 concave et convexe qui viennent d'être décrites. Ces faces F2, F4 seront appelées faces de liaison par la suite. Ces deux faces F2, F4 de liaison sont ici sensiblement convexes. Lesdites deux faces F2, F4 de liaison présentent, en particulier, un extremum au voisinage de la ligne intermédiaire 15.The figure 6 illustrates the applicator 10 when viewed from the side with respect to the figure 5 . There can be observed the shape of two faces F2, F4 which are the faces connecting said two faces F1, F3 concave and convex which have just been described. These faces F2, F4 will be called bonding faces thereafter. These two connecting faces F2, F4 are here substantially convex. Said two connecting faces F2, F4 have, in particular, an extremum in the vicinity of the intermediate line 15.

Il est à noter que la figure 5 illustre la face F2 par ses contours, dans un plan (celui de la feuille) ; cependant, la courbure dans l'espace de ladite face F2 est visible sur la figure 2 où elle est représentée de profil.It should be noted that figure 5 illustrates the face F2 by its contours, in a plane (that of the sheet); however, the curvature in the space of said face F2 is visible on the figure 2 where she is represented in profile.

De même, la face concave F1, illustrée sur la figure 6 par ses contours, présente une courbure dans l'espace qui est particulièrement visible sur la figure 5.Similarly, the concave face F1, illustrated on the figure 6 by its outlines, presents a curvature in space that is particularly visible on the figure 5 .

La figure 10 représente la superposition des deux sections repérées C-C et D-D sur la figure 6, à savoir une première section de l'enveloppe E réalisée au niveau intermédiaire 15, repérée SC sur la figure 10, et une seconde section réalisée au niveau de l'extrémité proximale 14, repérée SD sur la même figure 10. On constate, sur la figure 10, que ces deux sections SC, SD sont des rectangles dont la taille et l'orientation différent autour de l'axe principal X. Autrement dit, la forme de la section transversale de l'enveloppe E présente, en deux points distincts dudit axe principal X, une orientation par rapport audit axe principal X qui diffère, notamment une orientation angulaire autour dudit axe principal X qui diffère.The figure 10 represents the superposition of the two sections marked CC and DD on the figure 6 , namely a first section of the envelope E made at the intermediate level 15, marked SC on the figure 10 , and a second section made at the proximal end 14, labeled SD on the same figure 10 . On the figure 10 , that these two sections SC, SD are rectangles whose size and different orientation about the main axis X. In other words, the shape of the cross section of the envelope E has two points distinct from said main axis X, an orientation with respect to said main axis X which differs, in particular an angular orientation about said main axis X which differs.

A l'endroit de la section SC, la face F1 est formée par les extrémités libres de fibres d'extensions radiales plus courtes que celles formant la même face F1 à l'endroit de la section SD. De plus, la face F1 est encadrée par les faces F2 et F4 comme indiqué sur la figure 10. Lesdites deux faces F2 et F4 présentent chacune une zone convexe ayant leur partie bombée vers l'extérieur, par rapport à l'axe principal X, à l'endroit de ladite section SC. Cela signifie que ladite face F1 s'étendra sur une longueur de rectangle à l'endroit de la section SC plutôt que sur une largeur du même rectangle comme cela est le cas à l'endroit de la section SD. Ainsi, à l'endroit de la section SC, la face F1 présente une longueur proche de l'axe principal X et, à l'endroit de la section SD, une largeur plus éloignée de l'axe principal X.At the location of the section SC, the face F1 is formed by the free ends of fibers of radial extensions shorter than those forming the same face F1 at the location of the section SD. In addition, the F1 face is framed by the faces F2 and F4 as shown on the figure 10 . Said two faces F2 and F4 each have a convex zone having their curved portion outwardly, with respect to the main axis X, at the location of said section SC. This means that said face F1 will extend over a length of rectangle at the location of the section SC rather than a width of the same rectangle as is the case at the location of the section SD. Thus, at the location of the section SC, the face F1 has a length close to the main axis X and, at the location of the section SD, a width farther from the main axis X.

L'enveloppe E du mode de réalisation qui vient d'être décrit avec les figures 5, 6 et 10 - troisième mode de réalisation, comporte deux paires de faces F1, F3 et F2, F4. L'une des paires de faces comporte des faces F2, F4 symétriques par rapport à un plan médian comprenant l'âme 12 ; ce sont les faces dites de liaison F2, F4. L'autre paire de faces F1, F3 suivent sensiblement une même courbe le long de l'axe principal X (voir figure 5). Cette enveloppe E présente l'avantage de courber et de charger les cils de l'utilisateur de manière optimale car elle présente une face concave formée par des fibres de faibles extensions radiales qui ont un fort pouvoir chargeant.The envelope E of the embodiment which has just been described with the Figures 5, 6 and 10 - Third embodiment, has two pairs of faces F1, F3 and F2, F4. One of the pairs of faces comprises faces F2, F4 symmetrical with respect to a median plane comprising the core 12; these are the so-called connecting faces F2, F4. The other pair of faces F1, F3 substantially follow the same curve along the main axis X (see figure 5 ). This envelope E has the advantage of bending and loading the eyelashes of the user optimally because it has a concave face formed by fibers of small radial extensions which have a high charging power.

Dans le quatrième mode de réalisation qui est illustré aux figures 7 et 8, l'enveloppe E comprend, le long dudit axe principal X, des faces courbées, opposées deux à deux par rapport à l'axe principal X, qui présentent un même profil ondulé en forme de S, notamment de l'extrémité distale 16 à l'extrémité proximale 14 de l'âme 12. Autrement dit, l'enveloppe E du mode de réalisation des figures 7 et 8 comporte une paire de faces courbées F1, F3 qui présentent une ondulation en forme de S le long de l'axe principal X qui, lorsque l'applicateur de l'invention est vu de face - l'observateur regardant la face F2 - présente les formes suivantes : pour F1, une forme concave de l'extrémité distale 16 à la ligne intermédiaire 15 et convexe de la ligne intermédiaire 15 à l'extrémité proximale 14, et pour F3, une forme convexe de l'extrémité distale 16 à la ligne intermédiaire 15 et concave de la ligne intermédiaire 15 à l'extrémité proximale 14 (voir figure 7).In the fourth embodiment which is illustrated in Figures 7 and 8 the envelope E comprises, along said main axis X, curved faces opposed in pairs relative to the main axis X, which have the same S-shaped corrugated profile, in particular from the distal end 16 to the proximal end 14 of the core 12. In other words, the envelope E of the embodiment of the Figures 7 and 8 comprises a pair of curved faces F1, F3 which have an S-shaped corrugation along the main axis X which, when the applicator of the invention is seen from the front - the observer looking at the face F2 - presents the following forms: for F1, a concave shape of the distal end 16 to the intermediate line 15 and convex of the intermediate line 15 to the proximal end 14, and for F3, a convex shape of the distal end 16 to the line intermediate 15 and concave of the intermediate line 15 to the proximal end 14 (see figure 7 ).

Dans le cadre de ce mode de réalisation, la forme de la section transversale de l'enveloppe E présente aussi, en deux points distincts dudit axe principal X, une orientation par rapport audit axe principal X qui diffère. Par exemple, en effectuant une section proche du niveau intermédiaire 15, on obtiendra une forme sensiblement carrée, sensiblement centrée sur l'axe principal X et, en effectuant une section proche de l'extrémité distale 14, une forme de carré décentré, ou encore désaxé, par rapport audit axe principal X.In the context of this embodiment, the shape of the cross section of the envelope E also has, at two points distinct from said main axis X, an orientation with respect to said main axis X which differs. For example, by performing a section near the intermediate level 15, a shape will be obtained substantially square, substantially centered on the main axis X and, by making a section near the distal end 14, a square shape off-center, or off-axis, with respect to said main axis X.

Comme dans le cadre de l'exemple illustré par les figures 3 et 4, les courbures concaves évoquées ci-dessus présenteront avantageusement un rayon de courbure, repéré Rmin, qui est compris entre 15 et 20mm et qui est sensiblement égal à 17mm. De même, les courbures convexes évoquées ci-dessus présenteront avantageusement un rayon de courbure Rmax compris entre 17,5 et 22,5mm et sensiblement égal à 20mm.As in the case of the example illustrated by the Figures 3 and 4 , the concave curvatures mentioned above will advantageously have a radius of curvature, marked Rmin , which is between 15 and 20mm and which is substantially equal to 17mm. Similarly, the convex curvatures mentioned above will advantageously have a radius of curvature Rmax between 17.5 and 22.5mm and substantially equal to 20mm.

Le profil de l'enveloppe E qui vient d'être décrit - quatrième mode de réalisation - présente des possibilités de maquillage avantageuses. En effet, il permet de maquiller une frange de cils selon des intensités qui différent pour les cils qui la composent.The profile of the envelope E which has just been described - fourth embodiment - has advantageous makeup possibilities. Indeed, it makes it possible to make up a fringe of eyelashes with intensities that differ for the eyelashes that compose it.

Les arêtes - ou bords latéraux - sont des courbes paramétrées dans un repère cartésien orthonormé à trois dimensions, l'une desdites dimensions étant confondue avec la direction dudit axe X, les coordonnées desdites courbes paramétrées évoluant dans les trois directions dudit repère cartésien et lesdites courbes paramétrées ne se confondant en aucun point entre lesdites extrémités distale 16 et proximale 14.The edges - or lateral edges - are curves set in a three-dimensional orthonormal Cartesian coordinate system, one of said dimensions being coincident with the direction of said X axis, the coordinates of said parameterized curves moving in the three directions of said Cartesian coordinate system and said curves. parametrized at no point between said distal 16 and proximal 14 ends.

Lesdites arêtes présentent donc un tracé complexe quoique obtenue avec des faces qui restent faciles à réaliser. Ce tracé est particulièrement avantageux pour accrocher les cils et les allonger.Said edges therefore have a complex layout although obtained with faces that remain easy to achieve. This pattern is particularly advantageous for hanging eyelashes and lengthen them.

Pour faciliter le retour de la brosse 10 dans son réceptacle, l'enveloppe de l'applicateur 10 pourra présenter des chanfreins 20 au niveau de certaines de ses faces, à l'extrémité distale 16 de l'âme 12. En effet, l'extrémité distale 16 est habituellement celle par laquelle le contact avec le réceptacle se fait lorsque l'utilisateur range l'applicateur 10 après utilisation. De préférence, l'enveloppe comprend au moins deux faces opposées F1, F3, avec des chanfreins 20 symétriques par rapport à un plan médian passant par ladite âme 12. La hauteur de ces chanfreins 20 sera comprise entre 0 (absence de chanfreins) et 5mm.To facilitate the return of the brush 10 in its receptacle, the envelope of the applicator 10 may have chamfers 20 at some of its faces, at the distal end 16 of the core 12. In fact, the Distal end 16 is usually the one through which contact with the receptacle is made when the user tidies the applicator 10 after use. Preferably, the envelope comprises at least two opposite faces F1, F3, with chamfers 20 symmetrical with respect to a median plane passing through said core 12. The height of these chamfers 20 will be between 0 (absence of chamfers) and 5mm .

Il est intéressant de noter que la largeur de l'enveloppe E est fonctionnellement liée aux avantages de l'applicateur 10 ; ladite largeur varie le long de l'axe X, entre des extrêmes, lesdits extrêmes étant repérés Rmax, dint et dmin sur les figures 1 à 7. dmax, dmin correspondent, d'ailleurs, à l'encombrement de l'enveloppe au voisinage des sommets des reliefs pour dmax et des creux pour dmin. Ainsi, la formule suivante sera avantageusement respectée :

  • 0,125 ≤ dmin/dmax ≤ 0.625. Par exemple, dmax sera compris entre 6 et 8mm et dmin sera compris entre 3 et 4,5mm.
It is interesting to note that the width of the envelope E is functionally related to the advantages of the applicator 10; said width varies along the X axis, between extremes, said extremes being marked Rmax , dint and dmin on the Figures 1 to 7 . dmax , dmin correspond, moreover, to the bulkiness of the envelope in the vicinity of the peaks of the reliefs for dmax and hollows for dmin . Thus, the following formula will be advantageously respected:
  • 0.125 ≤ dmin / dmax ≤ 0.625. For example, dmax will be between 6 and 8mm and dmin will be between 3 and 4.5mm.

dint correspond à un encombrement de l'enveloppe E dans le cas particulier du quatrième mode de réalisation. Par exemple, dint sera compris entre 4,5 et 6,5mm (voir figure 7). dint corresponds to a bulk of the envelope E in the particular case of the fourth embodiment. For example, dint will be between 4.5 and 6.5mm (see figure 7 ).

L'invention concerne aussi un procédé pour la fabrication d'un applicateur pour produit cosmétique, notamment mascara, par exemple celui qui vient d'être décrit.The invention also relates to a process for the manufacture of an applicator for a cosmetic product, in particular mascara, for example that which has just been described.

Ce procédé comprend d'abord une étape de positionnement d'une pluralité de fibres entre des parties longitudinales d'une broche (non représentée). Les fibres sont réparties de telle manière que lesdites parties longitudinales passent sensiblement au milieu de chacune desdites fibres.This method first comprises a step of positioning a plurality of fibers between longitudinal portions of a spindle (not shown). The fibers are distributed in such a way that said longitudinal portions pass substantially in the middle of each of said fibers.

L'étape suivante dudit procédé est une première étape de torsion de ladite broche pour former une broche torsadée présentant des fibres s'étendant radialement autour d'elle. Les extrémités desdites fibres forment alors une enveloppe cylindrique s'étendant dans une direction d'extension longitudinale autour de la dite broche. Les fibres sont réparties sous forme de spires de fibres en raison de la torsion de la broche.The next step of said method is a first step of twisting said pin to form a twisted pin having fibers extending radially around it. The ends of said fibers then form a cylindrical envelope extending in a direction of longitudinal extension around said pin. The fibers are distributed as fiber turns because of the twisting of the spindle.

L'étape qui suit est une étape de découpe des fibres, de manière à ce que lesdites fibres forment une enveloppe E avec leur extrémité libre, ladite enveloppe E comprenant des faces F1-F4 qui alternent autour de l'axe principal X, lesdites faces F1-F4 étant courbes, une section réalisée transversalement à l'axe principal X, dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes F1-F4. Ladite découpe pourra être à commande numérique. Durant toutes ces opérations, ladite tige torsadée est maintenue rectiligne.The following step is a step of cutting the fibers, so that said fibers form an envelope E with their free end, said envelope E comprising faces F1-F4 which alternate around the main axis X, said faces F1-F4 being curved, a section made transversely to the main axis X, said cross section, having a substantially polygonal shape so as to form edges between said curved faces F1-F4. Said cutting may be numerically controlled. During all these operations, said twisted rod is kept rectilinear.

Avantageusement, la portion de la broche dépourvue de fibres qui prolonge l'extrémité proximale 14 sera destinée à être fixée à l'intérieur d'une tige creuse, elle-même liée à un manche par lequel l'utilisateur manipulera ledit applicateur. Ladite portion est torsadée ou non.Advantageously, the portion of the fiber-free spindle which extends the proximal end 14 will be intended to be fixed inside a hollow rod, itself linked to a handle by which the user will manipulate said applicator. Said portion is twisted or not.

Il est à noter que l'applicateur de l'invention forme avantageusement, une brosse.It should be noted that the applicator of the invention advantageously forms a brush.

Il est encore à noter que les modes de réalisation illustrés aux figures 1 à 7 peuvent avantageusement être combinés afin d'en combiner les effets de maquillage, voire dans le but d'en obtenir de nouveaux.It should also be noted that the embodiments illustrated in Figures 1 to 7 can advantageously be combined to combine the effects of makeup, or in order to obtain new ones.

De plus, le nombre de quatre faces n'est pas limitatif et l'applicateur 10 pourra présenter trois, voire quatre, ou encore six paires de faces opposées deux à deux, ceci sans sortir du cadre de l'invention.In addition, the number of four faces is not limiting and the applicator 10 may have three or even four or six pairs of faces opposite two by two, this without departing from the scope of the invention.

Il est aussi à noter que des variantes de réalisation sont bien sûr possibles. Notamment il est aussi envisageable, dans un mode de réalisation non illustré ici, de prévoir l'enveloppe E sous une forme hélicoïdale. Autrement dit, les bords des faces décrites ci-dessus pourront suivre une hélice de l'extrémité proximale 14 à l'extrémité distale 16 de l'applicateur 10, par exemple grâce à une seconde étape de torsion du procédé selon l'invention.It should also be noted that variant embodiments are of course possible. In particular, it is also conceivable, in an embodiment not illustrated here, to provide the envelope E in a helical form. In other words, the edges of the faces described above can follow a helix from the proximal end 14 to the distal end 16 of the applicator 10, for example by a second step of twisting the method according to the invention.

Claims (11)

Applicateur (10) pour produit cosmétique, notamment mascara, comprenant une âme torsadée (12) et des fibres qui s'étendent à partir de l'âme (12) en étant maintenues par ladite âme (12), ladite âme (12) présentant une direction d'extension longitudinale principale, dite axe principal (X), ladite âme (12) étant rectiligne le long dudit axe principal (X), caractérisée par le fait que les fibres forment une enveloppe (E) avec leur extrémité libre, ladite enveloppe (E) comprenant des faces (F1-F4) qui alternent autour de l'axe principal (X), lesdites faces (F1-F4) étant courbes, une section réalisée transversalement à l'axe principal (X), dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes (F1-F4).Applicator (10) for a cosmetic product, in particular mascara, comprising a twisted core (12) and fibers which extend from the core (12) while being held by said core (12), said core (12) having a principal longitudinal extension direction, said main axis (X), said core (12) being rectilinear along said main axis (X), characterized in that the fibers form an envelope (E) with their free end, said envelope (E) comprising faces (F1-F4) which alternate around the main axis (X), said faces (F1-F4) being curved, a section made transversely to the main axis (X), said cross section , having a substantially polygonal shape so as to form edges between said curved faces (F1-F4). Applicateur (10) selon la revendication précédente, dans lequel lesdites faces (F1-F4) présentent un plan de symétrie comprenant ledit axe principal (X).Applicator (10) according to the preceding claim, wherein said faces (F1-F4) have a plane of symmetry comprising said main axis (X). Applicateur (10) selon l'une quelconque des revendications précédentes, dans lequel tout ou partie desdites faces courbes (F1-F4) sont symétriques deux à deux par rapport à un plan comprenant l'axe principal (X).Applicator (10) according to any one of the preceding claims, wherein all or part of said curved faces (F1-F4) are symmetrical two by two with respect to a plane comprising the main axis (X). Applicateur (10) selon la revendication précédente, dans lequel une paire desdites faces courbes symétriques (F2, F4) présente un profil sensiblement convexe le long de l'axe principal (X).Applicator (10) according to the preceding claim, wherein a pair of said symmetrical curved faces (F2, F4) has a substantially convex profile along the main axis (X). Applicateur (10) selon l'une quelconque des revendications 3 ou 4, dans lequel une paire desdites faces courbes (F1, F3) symétriques présentent un profil sensiblement concave le long de l'axe principal (X).An applicator (10) according to any one of claims 3 or 4, wherein a pair of said symmetrical curved faces (F1, F3) have a substantially concave profile along the main axis (X). Applicateur (10) selon l'une quelconque des revendications 1 à 4, dans lequel une et une seule desdites faces courbes (F1) présente un profil sensiblement concave le long de l'axe principal (X).An applicator (10) according to any one of claims 1 to 4, wherein one and only one of said curved faces (F1) has a substantially concave profile along the main axis (X). Applicateur (10) selon la revendication 1 ou 2, dans lequel une paire desdites faces courbes (F1, F3), opposées par rapport à l'axe principal (X), présente un même profil ondulé en forme de S.Applicator (10) according to claim 1 or 2, wherein a pair of said curved faces (F1, F3), opposite to the main axis (X), has the same S-shaped corrugated profile. Procédé pour la fabrication d'un applicateur (10) pour produit cosmétique, notamment mascara, ledit procédé comprenant : - une étape de positionnement d'une pluralité de fibres entre des parties longitudinales d'une broche, puis - une première étape de torsion de ladite broche pour former une broche torsadée présentant des fibres s'étendant radialement autour d'elle, les extrémités desdites fibres formant une enveloppe cylindrique s'étendant dans une direction d'extension longitudinale autour de la dite broche, dite axe principal (X), puis - une étape de découpe des fibres, de manière à ce que lesdites fibres forment une enveloppe (E) avec leur extrémité libre, ladite enveloppe (E) comprenant des faces (F1-F4) qui alternent autour de l'axe principal (X), lesdites faces (F1-F4) étant courbes, une section réalisée transversalement à l'axe principal (X), dite section transversale, présentant une forme sensiblement polygonale de sorte à former des arêtes entre lesdites faces courbes (F1-F4). Process for the manufacture of an applicator (10) for a cosmetic product, in particular mascara, said process comprising: a step of positioning a plurality of fibers between longitudinal portions of a spindle, and a first step of twisting said pin to form a twisted pin having fibers extending radially around it, the ends of said fibers forming a cylindrical envelope extending in a direction of longitudinal extension around said pin, said main axis (X), then a step of cutting the fibers, so that said fibers form an envelope (E) with their free end, said envelope (E) comprising faces (F1-F4) which alternate around the main axis (X) , said faces (F1-F4) being curved, a section made transversely to the main axis (X), said cross section, having a substantially polygonal shape so as to form edges between said curved faces (F1-F4). Procédé selon la revendication précédente comprenant une seconde étape de torsion de ladite broche après ladite étape de découpe des fibres.Method according to the preceding claim comprising a second step of twisting said pin after said step of cutting the fibers. Applicateur (10) pour produit cosmétique, notamment mascara, obtenu par le procédé selon l'une quelconque des revendications 8 ou 9.An applicator (10) for a cosmetic product, in particular mascara, obtained by the method according to any one of claims 8 or 9. Réceptacle pour produit cosmétique, notamment mascara, apte à contenir un applicateur (10) selon l'une quelconque des revendications 1 à 7 ou selon la revendication précédente.Container for cosmetic product, especially mascara, suitable for containing an applicator (10) according to any one of claims 1 to 7 or according to the preceding claim.
EP15160191.1A 2014-03-25 2015-03-20 Applicator for a cosmetic product, in particular mascara and method of producing such an applicator Active EP2923600B1 (en)

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EP1236419A1 (en) * 2001-03-01 2002-09-04 L'oreal Brush for applying a product on keratinous fibres
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FR2973991A1 (en) * 2011-04-12 2012-10-19 Oreal MASCARA BRUSH
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FR2909845B1 (en) * 2006-12-18 2009-03-20 Oreal APPLICATOR FOR APPLYING A PRODUCT ON LACQUERS OR EYEBROWS
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FR2811525A1 (en) * 2000-07-12 2002-01-18 Oreal Device for packaging and/or applying cosmetic product such as mascara comprising magnetic or magnetizable fibers
EP1236419A1 (en) * 2001-03-01 2002-09-04 L'oreal Brush for applying a product on keratinous fibres
WO2009153761A2 (en) * 2008-06-20 2009-12-23 L'oreal Mascara brush
FR2973991A1 (en) * 2011-04-12 2012-10-19 Oreal MASCARA BRUSH
FR2991560A1 (en) * 2012-06-07 2013-12-13 Oreal Applicator for application of cosmetic product or care product such as mascara on keratinous fibers such as eyelashes, has longitudinal notches, where edge and notches are not parallel to longitudinal axis of core

Also Published As

Publication number Publication date
FR3019016A1 (en) 2015-10-02
FR3019016B1 (en) 2017-09-01
US9591909B2 (en) 2017-03-14
CN104939488B (en) 2019-10-11
US20150272301A1 (en) 2015-10-01
BR102015006678A2 (en) 2017-06-20
EP2923600B1 (en) 2020-12-23
CN104939488A (en) 2015-09-30

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