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EP2229839B1 - Applicator for applying cosmetic substances on eyelashes or eyebrows - Google Patents

Applicator for applying cosmetic substances on eyelashes or eyebrows Download PDF

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Publication number
EP2229839B1
EP2229839B1 EP10156415.1A EP10156415A EP2229839B1 EP 2229839 B1 EP2229839 B1 EP 2229839B1 EP 10156415 A EP10156415 A EP 10156415A EP 2229839 B1 EP2229839 B1 EP 2229839B1
Authority
EP
European Patent Office
Prior art keywords
longitudinal axis
brush
core
curve
stem
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.)
Active
Application number
EP10156415.1A
Other languages
German (de)
French (fr)
Other versions
EP2229839A2 (en
EP2229839A3 (en
Inventor
Jean-Louis Gueret
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.)
LOreal SA
Original Assignee
LOreal SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP2229839A2 publication Critical patent/EP2229839A2/en
Publication of EP2229839A3 publication Critical patent/EP2229839A3/en
Application granted granted Critical
Publication of EP2229839B1 publication Critical patent/EP2229839B1/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
    • A45D40/267—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 comprising a wiper
    • 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
    • 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
    • A46B9/025—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups the bristles or the tufts being arranged in an angled position relative to each other
    • 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
    • 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

Definitions

  • the present invention relates to applicators for applying a cosmetic, make-up or care product to eyelashes or eyebrows, for example mascara, and to packaging and application devices comprising such applicators.
  • the invention more particularly relates to an applicator having a shaft having a distal portion extending along a longitudinal axis, and a brush attached to the distal portion of the shaft, the brush having a core and bristles extending from the shaft. 'soul.
  • the brush comprises a core formed of two branches of a wire twisted together and enclosing bristles.
  • Requirement EP 1 938 709 discloses a device comprising a twisted core brush defining an envelope surface having a cross section of flattened shape along a median plane and defining at least one face parallel to the longitudinal axis of the core.
  • Requirement EP 1 236 421 describes a curved brush around at least two axes not parallel to each other.
  • Requirement JP 2005-087635 is a mascara applicator having a twisted core, curved in the shape of an arc to match the shape of the eyelash fringe, the twisted core carrying at its free end a flocked applicator.
  • the brush comprises three successive rectilinear portions, the first in the extension of the rod, the second inclined, and the third parallel to the first.
  • the brush is curved around an axis of curvature.
  • the shape of the brush corresponds to a series of circular arcs of the same radius of curvature.
  • the US Patent 6,003,519 wears a brush to treat a lock of hair.
  • the invention may make it possible to obtain in addition to this non-constant spin a more regular spin on the faces parallel to the plane containing the longitudinal axis of the core.
  • a constant spin surface can be defined by an edge of the triangle. This edge may be parallel to the plane in which the longitudinal axis of the core extends.
  • the applicator according to the invention also allows easy access to the eyelashes of the corners of the eye for example, while promoting a homogeneous finish of the makeup on the eyelash fringe when the brush is turned a quarter turn around the longitudinal axis of the stem, using the squeezed faces more regularly.
  • the tangent to the longitudinal axis of the core at a point of intersection with the longitudinal axis of the rod may form with the longitudinal axis of the rod a non-zero angle, in particular greater than 5 °, or even 10 ° or 20 °.
  • the tangent to the longitudinal axis of the soul at a point of the core may form with the longitudinal axis of the rod an angle which may be, for all points of the soul, less than 90 °, or even strictly less than 90 °, better at 80 ° or even 60 °.
  • the first and second curvatures each having a vertex, these two vertices being located on either side of the longitudinal axis of the rod.
  • Each of the two vertices may not be located on the longitudinal axis of the rod.
  • the longitudinal axis of the core may not be tangent to the longitudinal axis of the rod in each of the two vertices of the first and second curvatures.
  • the first and second curvatures may differ by at least one of the following characteristics: nature of the curve followed by the curvature, for example circular or elliptical, radius of curvature, in particular that taken at the top of the curvature.
  • the first curvature may extend around a first axis of curvature according to a first radius of curvature and the second curvature may extend around a second axis of curvature according to a second radius of curvature, the first radius of curvature being different from the second radius of curvature.
  • the radius of curvature is measured at the top of the curvature.
  • the first radius of curvature measured at the top of the first curve is smaller than the second radius of curvature measured at the top of the second curve, the first curve being located closer to the distal portion of the stem than the second incurvation.
  • the second radius of curvature may differ from the first radius of curvature by at least 10%, or even at least 15%, more preferably by at least 20%.
  • the value of the first radius of curvature may for example be between 10 and 16 mm, for example of the order of 14.4 mm.
  • the value of the second radius of curvature may for example be between 20 and 35 mm, for example of the order of 29 mm.
  • the distance between the top of a curvature and the longitudinal axis of the rod may be non-zero, for at least the first curvature and the second curvature.
  • the sum of the first distance d 1 between the top of the first bend and the longitudinal axis of the shank and the d 2 between the top of the second bend and the longitudinal axis of the shank may be smaller than a larger dimension transverse of the rod, for example to the diameter of the rod, or even strictly lower, or alternatively greater or even strictly greater.
  • the core may be curved in a plane parallel to the greatest width of the brush or in a plane perpendicular to the largest width of the brush.
  • the core of the brush may be attached to the distal portion of the rod by being inserted into a housing of the distal portion of the rod, for example by being inserted by force into the latter.
  • the core of the brush may be curved around the first axis of curvature as soon as it leaves said housing, or alternatively at a non-zero distance from the distal portion of the shaft.
  • the brush may include a straight-core portion that connects to the distal portion of the shaft and extends a non-zero distance from the distal end of the shaft.
  • the longitudinal axis of the soul can define a first point of inflection between the vertices of the first and second curvatures. This point of inflection may or may not lie on the longitudinal axis of the stem.
  • the longitudinal axis of the core may have a wavy shape and may define a third curvature, concave toward the first side, around a third axis of curvature, which may be parallel to the first and second axes of curvature, according to a third radius of curvature, which may be equal to or different from, especially lower or higher, at least one of the first and second radii of curvature.
  • the value of the third radius of curvature may for example be between 50 and 90 mm, for example of the order of 70 mm.
  • the first curvature may extend along the longitudinal axis of the shank on a first length l 1 less than a second length l 2 on which extends, along the longitudinal axis, the second bend.
  • the first length l 1 can be measured firstly between the point of intersection A of the longitudinal axis of the core with the longitudinal axis of the rod between the first and second curvatures and secondly the end distal of the stem.
  • the second length l 2 can be measured on the one hand between this same point of intersection A and on the other hand a distal end of the brush, a point of intersection B with the longitudinal axis of the rod located between the second and a third curvature or inflection point between the second curvature and a third curvature, as the case may be.
  • the brush may comprise a rectilinear distal portion, extending parallel to the longitudinal axis of the rod, or coaxial with it.
  • the longitudinal axis of the core and the longitudinal axis of the stem may be intersecting at one or more points, for example two or even three points, not including the location of attachment of the brush to the distal portion of the stem .
  • the brush may include a first end, proximal, attached to the distal portion of the shaft, and a second distal end opposite its first end.
  • the distal end of the core of the brush may be located on the longitudinal axis of the rod or be shifted relative thereto.
  • the bristles of the brush define by their free end a surface envelope of the brush which may be non-symmetrical of revolution about the longitudinal axis of the core, made rectilinear for the purposes of observation.
  • the cross-section of the envelope surface of the brush may vary as one moves along the longitudinal axis of the core.
  • the envelope surface then being generally conical or frustoconical.
  • the brush may have a cross section of shape selected from the following list: circular, non-circular, oblong, oval, polygonal, in particular square, rectangular or triangular, this list not being limiting.
  • the brush may be as wide as it is thick, at least in a transverse section, or even a majority of its length, or even over its entire length.
  • the brush may have an oblong cross section.
  • the greatest width of the brush may be at least 3mm greater than its thickness measured at the same location on the longitudinal axis of the core as the one where the greatest width is measured.
  • the thickness of the brush may be between 2 and 7 mm, better between 2.5 and 6.5 mm, or between 3 and 6 mm or 3.5 and 5.5 mm.
  • a larger dimension of a cross section of the brush may be between 5 and 13 mm, or even between 7 and 11 mm, better between 8 and 10 mm.
  • the brush may have two opposite major faces, the difference between them defines the thickness of the brush. These main faces can be flat and parallel to each other. These main faces may be parallel to a plane containing the longitudinal axis of the core.
  • the brush may comprise a twisted core in which the bristles are held.
  • the brush may comprise for example between 9 and 100 hairs per turn, and better between 10 and 80 hairs per turn.
  • the number of hairs per turn corresponds to the number of hair ends counted by a fixed observer during a rotation of 180 ° of the brush around his soul.
  • the brush may be made by molding, for example in one piece, in particular by injection, or by overmolding the bristles on the core.
  • a molded brush may also be referred to as a "comb”, and the bristles as "teeth”.
  • hair means any salient individualizable element carried by the soul.
  • the terms “hair”, “protruding element” or “tooth” are interchangeable, although the term “hair” is usually used to designate the salient elements reported on a core, for example in the case of a twisted core brush, and the term “tooth” is often used to designate the application elements of a brush or comb made by molding.
  • the configuration of the molded brush can be obtained by the shape of the mold used for molding or alternatively the core can be deformed at the time of demolding, by a twist exerted on it in particular while the material is still hot.
  • the core of the applicator may be of polygonal cross-section, for example in the form of a regular polygon or not, for example triangular, square, rectangular, pentagonal, hexagonal, heptagonal, or octagonal.
  • the faces of the soul may be flat or slightly concave or slightly convex.
  • the core may comprise between 3 and 8 longitudinal faces, or even between 3 and 6 longitudinal faces.
  • the longitudinal faces of the core may be separated by ridges.
  • Teeth can have any shape.
  • the rod may comprise an elastically deformable distal portion.
  • This distal portion may for example be formed by a tip attached to the rest of the rod, which may be made of a more rigid material.
  • the tip may have one or more annular grooves giving it more flexibility.
  • the stem may comprise a proximal portion opposite to the distal portion, to which is connected a gripping member of the applicator.
  • the invention further relates to a packaging device and application comprising a container containing the product to be applied to the eyelashes or eyebrows and an applicator as defined above.
  • the device may comprise a wiper member of the brush at its outlet from the container, for example arranged on a neck of the container.
  • the gripper of the applicator can serve as closing cap of the container. They can for example cooperate by screwing.
  • the container and the closure cap may be configured to seal the closure of the container.
  • the subject of the invention is also a process for manufacturing a twisted-core brush of an applicator as defined above, in which the core is bent around at least two axes of curvature according to a first and a second radius of curvature, the two axes of curvature being parallel and the two radii of curvature may be different.
  • the invention also relates to a cosmetic treatment process, especially makeup, eyelashes or eyebrows, comprising the step of applying a product on the eyelashes or eyebrows using an applicator as defined above.
  • FIG. 1 a packaging and application device 1 comprising a container 2 containing a product P to be applied to the eyelashes or eyebrows, for example mascara, and an applicator 3 comprising a rod 4, for example of section circular transverse, provided at its distal portion 4a of a brush 5 and connected at its proximal end to a gripping member 6 also constituting a closure cap for the container 2.
  • the latter is equipped with a wiper member 7 , for example constituted by an elastomer piece inserted into the neck 8 of the container.
  • the wiper member 7 may be conventional or not, or even be adjustable.
  • the rod 4 has, in the example considered, a rectilinear longitudinal axis X, which coincides with the axis of the neck 8 of the container 2 when the applicator is in place thereon, and with the longitudinal axis of its portion. distal 4a.
  • the wiper member 7 comprises, in the illustrated example, a wiping orifice 9 of circular section, whose diameter corresponds substantially to that of the rod 4.
  • the gripping member 6 may be cylindrical of revolution, as illustrated, or alternatively comprise at least one flat and / or landmark for indexing the brush relative to the gripping member.
  • the brush 5 comprises a core 10 formed by two twisted metal strands, the core being therefore other than a core of thermoplastic material, this core 10 having a proximal portion fixed in a housing of the rod 4, for example being inserted by force in this accommodation. Both strands come for example folding over itself of a wire.
  • the strands of the soul can be twisted left or right.
  • the strands of the core may have a diameter of between 0.35 mm and 1 mm, for example.
  • the brush may be left-handed.
  • the brush 5 is shown with a twisted core on the left and on the figure 49 with a twisted soul on the right.
  • the core 10 of the brush extends along a longitudinal axis Y curve.
  • the core of the brush describes at least two curvatures, first around a first axis of curvature C 1 along a first radius of curvature r 1 , and secondly around a second axis of curvature C 2 according to a second radius of curvature r 2 , as illustrated in the figure 3 .
  • the radii of curvature are measured at the vertices respectively S 1 and S 2 of the two curvatures.
  • the longitudinal axis of the core Y extends entirely in one plane, the axes of curvature C 1 and C 2 being parallel to each other.
  • the longitudinal axis Y appears rectilinear, as shown in FIG. figure 4 since it extends in a single plane that is perpendicular to the plane of the figure 1 and which is the plan of the figure 3 .
  • the first radius of curvature r 1 is smaller than the second radius of curvature r 2 , the first axis of curvature C 1 being closer to the first end 4a of the rod 4 than the second axis of curvature r 1 curvature C 2 .
  • the distance d 1 measured between the vertex S 1 of the first curvature and the axis X is smaller than the distance d 2 measured between the vertex S 2 of the second curvature and the axis X.
  • the longitudinal axis Y of the core of the brush defines with the longitudinal axis X of the rod a point of intersection A, represented at Figures 2 and 3 .
  • the core 10 carries bristles 11 held by clamping between the twisted strands of the core 10 and extending substantially radially from the core, as can be seen on the Figures 3 and 4 .
  • the envelope surface E defined by the free ends of the bristles 11 of the brush 5 is shown.
  • the envelope surface E can be, as illustrated, of square cross-section.
  • the brush 5 can define two opposite parallel faces 12 extending substantially parallel to the axis X, as can be seen in FIG. figure 4 , and two opposite faces 13 extending non-parallel to the axis X of the rod, as can be seen on the figure 3 .
  • the envelope surface E is centered with respect to the core 10, but it is not beyond the scope of the present invention, if it is otherwise, the surface E envelope of the brush 5 being eccentric with respect to the core 10.
  • the cross section of the envelope surface E may be of a shape other than square.
  • the core 10 of the brush 5 can bear bristles 11 over substantially the entire portion of the apparent core 10 located outside the shaft 4. Alternatively, the core 10 may not wear hair over a distance after the stem 4.
  • the envelope surface E may have a truncated distal portion in the form of a pyramid or cone, for example, and it could be the same in the vicinity of the rod 4, to facilitate the passage of the brush 5 through the body d spin 7.
  • the brush 5 it is possible, for example, to start from a surface brush blank with a cylindrical envelope of revolution about the axis X of the rod, the longitudinal axis of the core of the blank being rectilinear and coaxial with the X axis.
  • one side can be machined and the brush rotated to machine the next side.
  • it may be the cutting head that is driven in movement relative to the brush, or both.
  • the blank can be cut while the soul is already attached to the rod.
  • the brush may be machined before being fixed on the rod.
  • the core may be bent around the first and second axes of curvature C 1 and C 2 respectively according to the first and second radii of curvature r 1 and r 2 , for example using one or more jigs of different radii around which the core 10 of the brush 5 is bent simultaneously or successively.
  • the user unscrews the applicator and extracts the brush 5 from the container 2.
  • the user can use one of the faces 12 parallel to the axis X of the rod 4 to apply the product P on the eyelashes or eyebrows and / or comb them relatively homogeneously.
  • the user can also rotate the brush 5 on itself around the X axis, that is to say in the example described by 90 °, and use the curved faces 13 to apply the product in a non-linear manner. homogeneous, for example to make up the ends of the eyelash fringe, including the corners of the eye.
  • One of the faces may be indexed relative to a flat and / or a mark of the gripping member.
  • the gripping member may for example be of square cross section, corresponding to the cross section of the brush, as illustrated in FIG. figure 6a .
  • the blank may for example be of triangular or trapezoidal longitudinal section, as illustrated in FIG. figure 7 , shaped diabolo as shown on the figure 8 , lenticular as illustrated on the figure 9 , or rectangular as illustrated on the figure 10 .
  • the envelope surface E of the brush 5 may have a square cross-section, as illustrated in the drawings. Figures 1 to 5 .
  • the envelope surface E of the brush may have in cross section, in at least one point of its length, a different shape, as illustrated in FIGS. FIGS. 11 to 21, 16a to 16c and 21a .
  • the cross section of the envelope surface E of the brush 5 may for example be rectangular, as illustrated in FIG. figure 11 , or triangular, as illustrated on the figure 12 , lenticular as illustrated on the figure 13 or semi-elliptical as shown on the figure 14 .
  • the cross-section of the envelope surface can still be diamond-shaped, as shown in FIG. figure 15 , or trapezoidal, as shown in figure 16 .
  • the cross section of the brush may have notches, as shown in the figure 16a , or hollows, as shown on the Figures 16b and 16c .
  • the face 12 is flat, but it is not beyond the scope of the present invention when the face 12 is defined by a generator moving parallel to the longitudinal axis X in a non-rectilinear direction.
  • a brush having at least one concave face 12 of generatrix parallel to the axis X, and at the figure 18 a brush with at least one convex face 12.
  • the brush may have an envelope surface of oblong cross section, at least one point of the core, in particular lenticular.
  • a cross section of the brush may have a convex side, as illustrated in FIG. figure 19 , or two opposite convex sides, as illustrated on the figure 20 .
  • the cross section of the brush can still be in the shape of an airplane wing, as shown in the figure 21 .
  • the brush may have a constant cross section or not over most of its length, or over its entire length. It may decrease towards its free end, as shown in figure 21a , the brush then being of generally conical or frustoconical shape.
  • the cross section of the brush may be eccentric with respect to the brush core in the cross-section, as shown in FIG. figure 21b .
  • the brushes illustrated are for example made with bristles of circular section with a diameter of between 6.5 hundredths of a millimeter and 40 hundredths of a millimeter.
  • FIG. figure 33 square as shown in figure 34 or hexagonal as shown in the figure 35 , or an oblong, in particular lenticular shape as shown in FIG. figure 36 , or hourglass-shaped as shown in the figure 37 .
  • Hair having articulated portions relative to one another can be used as shown in FIG. figure 38 . It is also possible to use bristles having at least one capillary groove 36, as illustrated in FIG. figure 39 .
  • the bristles 11 which are retained between the twisted strands of the core may have, before placement between the strands of the core, a rectilinear shape or not, for example a wavy shape as illustrated in FIG. figure 40 .
  • the bristles may be treated to form balls 37 at their ends as illustrated in FIG. figure 41 , or forks 38 as shown in FIG. figure 42 .
  • Flocked hairs can be used as illustrated in figure 43 or else bristles made by extrusion of a plastic material having a charge of particles 39, for example particles of a moisture-absorbing material, in order to impart a micro-relief to the surface of the bristles, as illustrated in FIG. figure 44 , or give them magnetic or other properties.
  • the brush may be magnetizable or magnetized.
  • the bristles may also be made of a material having properties promoting sliding and / or elasticity.
  • the bristles may be natural or synthetic and for example be made of a material selected from: PE, PA, in particular PA6, PA6 / 6, PA 6/10 or PA-6/12, HYTREL ®, PEBAX ®, silicone, PU, this list n not being limiting.
  • the bristles of the brush may undergo abrasion treatment, grinding, stamping or hot melt, especially at their end.
  • the hair can cross.
  • the brush may comprise at least one portion comprising curved bristles extending in a direction directed from the core, for example as described in the application US 2004/0168698 .
  • curved bristles extending in an oriented manner
  • the bristles may be curved by contact with a hot surface, including a surface in relative motion relative to the brush.
  • the brush may comprise at least two deformed bristles, for example caught between two adjacent turns, these bristles having a removal of material or crushing in at least one point of their length from the core and extending non radially outwardly from this point, as described in the application US 2004/0240926 .
  • Each deformed hair may comprise two rectilinear portions forming a bend between them. The two rectilinear portions may have the same cross section. Any deformed bristles may define elbows all located substantially at the same distance from the core.
  • the two elementary cores can each be constituted by a branch of a single twisted core folded U-shaped, the two branches being twisted together.
  • the rod 5 may be provided at the end, as illustrated in FIG. figure 48 , an elastically deformable tip 80 which serves as a support for the core of the brush and which allows a certain angular movement during removal of the brush from the container or during application, as illustrated in FIG. figure 49 .
  • This tip comprises for example a groove 81.
  • the tip is for example as described in EP 1 917 883 A2 and can be produced at least partially from a material from the following list: elastomer, thermoplastic, thermoplastic elastomer, LDPE, PVC, PU, polyester thermoplastic elastomers, especially terephthalate butene copolymers and polytetramethylene esterified glycol, HYTREL ®, EPDM, PDM, EVA, SIS, SEBS, SBS, latex, silicone, nitrile, butyl, polyurethane, polyether amide block, polyester, this list not being limiting.
  • the tip may be made of a material whose hardness is for example between 25 Shore A and 80 Shore D, or even between 40 Shore A and 70 Shore D.
  • the rigid part or parts of the rod may be made of a thermoplastic material , in particular one of the materials selected from the following list: HDPE, LDPE, linear PE, PT, PP, POM, PA, PET, PBT, this list not being
  • the brush may be vibrated either by a generator mounted in the applicator, in particular on the gripping member, removably or not, or by an external vibrating element mounted on a finger of the user, for example.
  • a vibration generator is described in the French patent application FR 2 882 506 .
  • the vibrations can make it possible to obtain a better separation of the eyelashes and in the case of the use of a composition comprising fibers, a better orientation thereof and / or an ease of sampling.
  • the applicator element may be subjected to vibrations from the vibrating source, which may make it possible to obtain, if necessary, a more homogeneous product load on the applicator element.
  • the core When the brush is viewed in cross-section, the core may be central. Alternatively, the core may be eccentric in the cross section of the brush.
  • the brush may have one or more notches, which may extend to the core of the brush.

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  • Physics & Mathematics (AREA)
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Description

La présente invention concerne les applicateurs pour appliquer un produit cosmétique, de maquillage ou de soin, sur les cils ou les sourcils, par exemple du mascara, ainsi que les dispositifs de conditionnement et d'application comportant de tels applicateurs.The present invention relates to applicators for applying a cosmetic, make-up or care product to eyelashes or eyebrows, for example mascara, and to packaging and application devices comprising such applicators.

L'invention concerne plus particulièrement un applicateur comportant une tige ayant une portion distale s'étendant selon un axe longitudinal, et une brosse fixée à la portion distale de la tige, cette brosse comportant une âme et des poils s'étendant à partir de l'âme.The invention more particularly relates to an applicator having a shaft having a distal portion extending along a longitudinal axis, and a brush attached to the distal portion of the shaft, the brush having a core and bristles extending from the shaft. 'soul.

On connaît de nombreux applicateurs de ce type, dans lesquels la brosse comporte une âme formée de deux branches d'un fil métallique torsadées entre elles et enserrant des poils.Many applicators of this type are known in which the brush comprises a core formed of two branches of a wire twisted together and enclosing bristles.

La demande EP 1 938 709 divulgue un dispositif comportant une brosse à âme torsadée définissant une surface enveloppe ayant une section transversale de forme aplatie selon un plan médian et définissant au moins une face parallèle à l'axe longitudinal de l'âme.Requirement EP 1 938 709 discloses a device comprising a twisted core brush defining an envelope surface having a cross section of flattened shape along a median plane and defining at least one face parallel to the longitudinal axis of the core.

La demande EP 1 236 421 décrit une brosse incurvée autour d'au moins deux axes non parallèles entre eux.Requirement EP 1 236 421 describes a curved brush around at least two axes not parallel to each other.

La demande JP 2005-087635 porte sur un applicateur de mascara comportant une âme torsadée, courbée en forme d'arc pour épouser la forme de la frange de cils, l'âme torsadée portant à son extrémité libre un applicateur floqué.Requirement JP 2005-087635 is a mascara applicator having a twisted core, curved in the shape of an arc to match the shape of the eyelash fringe, the twisted core carrying at its free end a flocked applicator.

Dans le brevet US 6 508 603 , la brosse comporte trois portions rectilignes successives, la première dans le prolongement de la tige, la seconde inclinée, et la troisième parallèle à la première.In the US Patent 6,508,603 , the brush comprises three successive rectilinear portions, the first in the extension of the rod, the second inclined, and the third parallel to the first.

Dans le brevet US 4 241 743 , la brosse est incurvée autour d'un axe de courbure.In the U.S. Patent 4,241,743 , the brush is curved around an axis of curvature.

Dans la demande EP 1 020 136 , la forme de la brosse correspond à une suite d'arcs de cercle de même rayon de courbure.In the request EP 1 020 136 , the shape of the brush corresponds to a series of circular arcs of the same radius of curvature.

Le brevet US 6 003 519 porte sur une brosse pour traiter une mèche de cheveux.The US Patent 6,003,519 wears a brush to treat a lock of hair.

Il existe un besoin pour perfectionner encore les applicateurs comportant des brosses et l'invention vise à y répondre.There is a need to further improve applicators with brushes and the invention aims to meet them.

Selon l'un de ses aspects, l'invention a pour objet un applicateur pour appliquer un produit cosmétique sur les cils ou les sourcils, comportant :

  • une tige ayant une portion distale s'étendant selon un axe longitudinal, et
  • une brosse fixée à la portion distale de la tige, comportant une âme portant des poils, l'âme s'étendant selon un axe longitudinal entièrement contenu dans un plan et ayant une première incurvation concave vers un premier côté et ayant une deuxième incurvation concave vers un deuxième côté opposé au premier côté, la première incurvation étant différente de la deuxième incurvation,
l'axe longitudinal de l'âme traversant au moins une fois l'axe longitudinal de la tige, et l'âme de la brosse étant dépourvue de retour vers la portion distale de la tige, lorsque l'on se déplace le long de l'axe longitudinal de l'âme en direction de son extrémité libre, et les premières de deuxièmes incurvations comportant chacune un sommet, les deux sommets étant situés de part et d'autre de l'axe longitudinal de la tige. La courbure de l'axe longitudinal de l'âme peut permettre d'obtenir un essorage non constant le long de la brosse. L'invention peut ainsi permettre d'obtenir des zones de la brosse plus chargée en produit après l'essorage, notamment au creux des courbures de l'axe longitudinal de l'âme.According to one of its aspects, the invention relates to an applicator for applying a cosmetic product to the eyelashes or the eyebrows, comprising:
  • a shaft having a distal portion extending along a longitudinal axis, and
  • a brush attached to the distal portion of the shaft, having a bristled core, the core extending along a longitudinal axis fully contained in a plane and having a first concave curvature to a first side and having a second concave curvature to a second side opposite the first side, the first curvature being different from the second curvature,
the longitudinal axis of the core traversing at least once the longitudinal axis of the rod, and the core of the brush being devoid of return towards the distal portion of the rod, when one moves along the longitudinal axis of the core towards its free end, and the first of second curvatures each having a vertex, the two vertices being located on either side of the longitudinal axis of the rod. The curvature of the longitudinal axis of the core may allow to obtain a non-constant spin along the brush. The invention can thus make it possible to obtain areas of the brush that are more loaded with product after the spinning, in particular in the hollow of the curvatures of the longitudinal axis of the core.

L'invention peut permettre d'obtenir outre cet essorage non constant un essorage plus régulier sur les faces parallèles au plan contenant l'axe longitudinal de l'âme.The invention may make it possible to obtain in addition to this non-constant spin a more regular spin on the faces parallel to the plane containing the longitudinal axis of the core.

Dans le cas d'une brosse de section transversale triangulaire par exemple, une surface d'essorage constant peut être définie par une arête du triangle. Cette arête peut être parallèle au plan dans lequel s'étend l'axe longitudinal de l'âme.In the case of a brush of triangular cross-section for example, a constant spin surface can be defined by an edge of the triangle. This edge may be parallel to the plane in which the longitudinal axis of the core extends.

L'applicateur selon l'invention permet en outre d'accéder facilement aux cils des coins de l'oeil par exemple, tout en favorisant une finition homogène du maquillage sur la frange de cils lorsque la brosse est tournée d'un quart de tour autour de l'axe longitudinal de la tige, en utilisant les faces essorées plus régulièrement.The applicator according to the invention also allows easy access to the eyelashes of the corners of the eye for example, while promoting a homogeneous finish of the makeup on the eyelash fringe when the brush is turned a quarter turn around the longitudinal axis of the stem, using the squeezed faces more regularly.

Par l'expression "sans retour vers la portion distale de la tige", il faut comprendre que l'on progresse toujours, le long de l'âme de la brosse, avec une abscisse projetée sur l'axe longitudinal de la tige qui va en augmentant lorsque l'on se rapproche de l'extrémité distale de l'âme.By the expression "without returning to the distal portion of the stem", it is to be understood that progress is always made along the brush core with an abscissa projected on the longitudinal axis of the rod which will increasing when one approaches the distal end of the soul.

Par "axe longitudinal de la tige", il faut comprendre l'axe longitudinal de la portion distale rectiligne de la tige.By "longitudinal axis of the stem", it is necessary to understand the longitudinal axis of the rectilinear distal portion of the stem.

La tangente à l'axe longitudinal de l'âme en un point d'intersection avec l'axe longitudinal de la tige peut former avec l'axe longitudinal de la tige un angle non nul, notamment supérieur à 5°, voire à 10° ou 20°.The tangent to the longitudinal axis of the core at a point of intersection with the longitudinal axis of the rod may form with the longitudinal axis of the rod a non-zero angle, in particular greater than 5 °, or even 10 ° or 20 °.

La tangente à l'axe longitudinal de l'âme en un point de l'âme peut former avec l'axe longitudinal de la tige un angle qui peut être, pour tous les points de l'âme, inférieur à 90°, voire strictement inférieur à 90°, mieux à 80°, voire à 60°.The tangent to the longitudinal axis of the soul at a point of the core may form with the longitudinal axis of the rod an angle which may be, for all points of the soul, less than 90 °, or even strictly less than 90 °, better at 80 ° or even 60 °.

Les première et deuxième incurvations comportant chacune un sommet, ces deux sommets étant situés de part et d'autre de l'axe longitudinal de la tige. Chacun des deux sommets peut ne pas être situé sur l'axe longitudinal de la tige. L'axe longitudinal de l'âme peut ne pas être tangent à l'axe longitudinal de la tige en chacun des deux sommets des première et deuxième incurvations.The first and second curvatures each having a vertex, these two vertices being located on either side of the longitudinal axis of the rod. Each of the two vertices may not be located on the longitudinal axis of the rod. The longitudinal axis of the core may not be tangent to the longitudinal axis of the rod in each of the two vertices of the first and second curvatures.

Les première et deuxième incurvations peuvent différer par l'une au moins des caractéristiques suivantes : nature de la courbe suivie par l'incurvation, par exemple circulaire ou elliptique, rayon de courbure, notamment celui pris au sommet de l'incurvation.The first and second curvatures may differ by at least one of the following characteristics: nature of the curve followed by the curvature, for example circular or elliptical, radius of curvature, in particular that taken at the top of the curvature.

La première incurvation peut s'étendre autour d'un premier axe de courbure selon un premier rayon de courbure et la deuxième incurvation peut s'étendre autour d'un deuxième axe de courbure selon un deuxième rayon de courbure, le premier rayon de courbure étant différent du deuxième rayon de courbure. Lorsque l'incurvation ne correspond pas à un arc de cercle, le rayon de courbure est mesuré au sommet de l'incurvation.The first curvature may extend around a first axis of curvature according to a first radius of curvature and the second curvature may extend around a second axis of curvature according to a second radius of curvature, the first radius of curvature being different from the second radius of curvature. When the curvature does not correspond to an arc of a circle, the radius of curvature is measured at the top of the curvature.

Dans un exemple de réalisation, le premier rayon de courbure mesuré au sommet de la première incurvation est plus petit que le deuxième rayon de courbure mesuré au sommet de la deuxième incurvation, la première incurvation étant située plus près de la portion distale de la tige que la deuxième incurvation.In an exemplary embodiment, the first radius of curvature measured at the top of the first curve is smaller than the second radius of curvature measured at the top of the second curve, the first curve being located closer to the distal portion of the stem than the second incurvation.

Le deuxième rayon de courbure peut différer du premier rayon de courbure d'au moins 10 %, voire d'au moins 15 %, mieux d'au moins 20 %.The second radius of curvature may differ from the first radius of curvature by at least 10%, or even at least 15%, more preferably by at least 20%.

La valeur du premier rayon de courbure peut par exemple être comprise entre 10 et 16 mm, par exemple de l'ordre de 14,4 mm.The value of the first radius of curvature may for example be between 10 and 16 mm, for example of the order of 14.4 mm.

La valeur du deuxième rayon de courbure peut par exemple être comprise entre 20 et 35 mm, par exemple de l'ordre de 29 mm.The value of the second radius of curvature may for example be between 20 and 35 mm, for example of the order of 29 mm.

La distance entre le sommet d'une incurvation et l'axe longitudinal de la tige peut être non nulle, pour au moins la première incurvation et la deuxième incurvation.The distance between the top of a curvature and the longitudinal axis of the rod may be non-zero, for at least the first curvature and the second curvature.

La somme de la première distance d1 entre le sommet de la première incurvation et l'axe longitudinal de la tige et celle d2 entre le sommet de la deuxième incurvation et l'axe longitudinal de la tige peut être inférieure à une plus grande dimension transversale de la tige, par exemple au diamètre de la tige, voire strictement inférieure, ou en variante supérieure, voire strictement supérieure.The sum of the first distance d 1 between the top of the first bend and the longitudinal axis of the shank and the d 2 between the top of the second bend and the longitudinal axis of the shank may be smaller than a larger dimension transverse of the rod, for example to the diameter of the rod, or even strictly lower, or alternatively greater or even strictly greater.

L'âme peut être incurvée dans un plan parallèle à la plus grande largeur de la brosse ou dans un plan perpendiculaire à la plus grande largeur de la brosse.The core may be curved in a plane parallel to the greatest width of the brush or in a plane perpendicular to the largest width of the brush.

L'âme de la brosse peut être fixée à la portion distale de la tige en étant insérée dans un logement de la portion distale de la tige, par exemple en étant insérée à force dans ce dernier.The core of the brush may be attached to the distal portion of the rod by being inserted into a housing of the distal portion of the rod, for example by being inserted by force into the latter.

L'âme de la brosse peut être courbée autour du premier axe de courbure dès sa sortie dudit logement, ou en variante à une distance non nulle de la portion distale de la tige. La brosse peut comporter une portion d'âme rectiligne se raccordant à la portion distale de la tige et s'étendant sur une distance non nulle depuis l'extrémité distale de la tige.The core of the brush may be curved around the first axis of curvature as soon as it leaves said housing, or alternatively at a non-zero distance from the distal portion of the shaft. The brush may include a straight-core portion that connects to the distal portion of the shaft and extends a non-zero distance from the distal end of the shaft.

L'axe longitudinal de l'âme peut définir un premier point d'inflexion entre les sommets des première et deuxième incurvations. Ce point d'inflexion peut ou non se situer sur l'axe longitudinal de la tige.The longitudinal axis of the soul can define a first point of inflection between the vertices of the first and second curvatures. This point of inflection may or may not lie on the longitudinal axis of the stem.

L'axe longitudinal de l'âme peut avoir une forme ondulée et peut définir une troisième incurvation, concave vers le premier côté, autour d'un troisième axe de courbure, qui peut être parallèle aux premier et deuxième axes de courbure, selon un troisième rayon de courbure, qui peut être égal ou différent, notamment inférieur ou supérieur, à l'un au moins des premier et deuxième rayons de courbure.The longitudinal axis of the core may have a wavy shape and may define a third curvature, concave toward the first side, around a third axis of curvature, which may be parallel to the first and second axes of curvature, according to a third radius of curvature, which may be equal to or different from, especially lower or higher, at least one of the first and second radii of curvature.

La valeur du troisième rayon de courbure peut par exemple être comprise entre 50 et 90 mm, par exemple de l'ordre de 70 mm.The value of the third radius of curvature may for example be between 50 and 90 mm, for example of the order of 70 mm.

La première incurvation peut s'étendre le long de l'axe longitudinal de la tige sur une première longueur l1 inférieure à une deuxième longueur l2 sur laquelle s'étend, le long de l'axe longitudinal, la deuxième incurvation.The first curvature may extend along the longitudinal axis of the shank on a first length l 1 less than a second length l 2 on which extends, along the longitudinal axis, the second bend.

La première longueur l1 peut être mesurée d'une part entre le point d'intersection A de l'axe longitudinal de l'âme avec l'axe longitudinal de la tige entre les première et deuxième incurvations et d'autre part l'extrémité distale de la tige.The first length l 1 can be measured firstly between the point of intersection A of the longitudinal axis of the core with the longitudinal axis of the rod between the first and second curvatures and secondly the end distal of the stem.

La deuxième longueur l2 peut être mesurée d'une part entre ce même point d'intersection A et d'autre part une extrémité distale de la brosse, un point d'intersection B avec l'axe longitudinal de la tige situé entre la deuxième et une troisième incurvation ou un point d'inflexion entre la deuxième incurvation et une troisième incurvation, selon les cas.The second length l 2 can be measured on the one hand between this same point of intersection A and on the other hand a distal end of the brush, a point of intersection B with the longitudinal axis of the rod located between the second and a third curvature or inflection point between the second curvature and a third curvature, as the case may be.

La brosse peut comporter une portion distale rectiligne, s'étendant parallèlement à l'axe longitudinal de la tige, voire coaxiale à celui-ci.The brush may comprise a rectilinear distal portion, extending parallel to the longitudinal axis of the rod, or coaxial with it.

L'axe longitudinal de l'âme et l'axe longitudinal de la tige peuvent être sécants en un ou plusieurs points, par exemple deux, voire trois points, non compris l'endroit de fixation de la brosse à la portion distale de la tige.The longitudinal axis of the core and the longitudinal axis of the stem may be intersecting at one or more points, for example two or even three points, not including the location of attachment of the brush to the distal portion of the stem .

La brosse peut comporter une première extrémité, proximale, fixée à la portion distale de la tige, et une deuxième extrémité, distale, opposée à sa première extrémité.The brush may include a first end, proximal, attached to the distal portion of the shaft, and a second distal end opposite its first end.

L'extrémité distale de l'âme de la brosse peut être située sur l'axe longitudinal de la tige ou être décalée par rapport à ce dernier.The distal end of the core of the brush may be located on the longitudinal axis of the rod or be shifted relative thereto.

Les poils de la brosse définissent par leur extrémité libre une surface enveloppe de la brosse qui peut être non symétrique de révolution autour de l'axe longitudinal de l'âme, rendu rectiligne pour les besoins de l'observation.The bristles of the brush define by their free end a surface envelope of the brush which may be non-symmetrical of revolution about the longitudinal axis of the core, made rectilinear for the purposes of observation.

La section transversale de la surface enveloppe de la brosse peut varier lorsque l'on se déplace le long de l'axe longitudinal de l'âme.The cross-section of the envelope surface of the brush may vary as one moves along the longitudinal axis of the core.

Elle peut par exemple diminuer en direction de son extrémité libre, la surface enveloppe étant alors de forme générale conique ou tronconique.It may for example decrease toward its free end, the envelope surface then being generally conical or frustoconical.

La brosse peut avoir une section transversale de forme choisie dans la liste suivante : circulaire, non circulaire, oblongue, ovale, polygonale, notamment carrée, rectangulaire ou triangulaire, cette liste n'étant pas limitative.The brush may have a cross section of shape selected from the following list: circular, non-circular, oblong, oval, polygonal, in particular square, rectangular or triangular, this list not being limiting.

Dans une variante de réalisation, la brosse peut être aussi large qu'épaisse, au moins dans une section transversale, voire sur une majorité de sa longueur, voire sur toute sa longueur.In an alternative embodiment, the brush may be as wide as it is thick, at least in a transverse section, or even a majority of its length, or even over its entire length.

Dans une variante de réalisation, la brosse peut avoir une section transversale oblongue.In an alternative embodiment, the brush may have an oblong cross section.

La plus grande largeur de la brosse peut être supérieure d'au moins 3mm à son épaisseur mesurée au même emplacement sur l'axe longitudinal de l'âme que celui où la plus grande largeur est mesurée.The greatest width of the brush may be at least 3mm greater than its thickness measured at the same location on the longitudinal axis of the core as the one where the greatest width is measured.

L'épaisseur de la brosse peut être comprise entre 2 et 7 mm, mieux entre 2,5 et 6,5 mm, voire entre 3 et 6 mm ou 3,5 et 5,5 mm. Une plus grande dimension d'une section transversale de la brosse peut être comprise entre 5 et 13 mm, voire entre 7 et 11 mm, mieux entre 8 et 10 mm.The thickness of the brush may be between 2 and 7 mm, better between 2.5 and 6.5 mm, or between 3 and 6 mm or 3.5 and 5.5 mm. A larger dimension of a cross section of the brush may be between 5 and 13 mm, or even between 7 and 11 mm, better between 8 and 10 mm.

La brosse peut présenter deux faces principales opposées, dont l'écart entre elles définit l'épaisseur de la brosse. Ces faces principales peuvent être planes et parallèles entre elles. Ces faces principales peuvent être parallèles à un plan contenant l'axe longitudinal de l'âme.The brush may have two opposite major faces, the difference between them defines the thickness of the brush. These main faces can be flat and parallel to each other. These main faces may be parallel to a plane containing the longitudinal axis of the core.

La brosse peut comporter une âme torsadée dans laquelle sont maintenus les poils.The brush may comprise a twisted core in which the bristles are held.

La brosse peut comporter par exemple entre 9 et 100 poils par spire, et mieux entre 10 et 80 poils par spire. Le nombre de poils par spire correspond au nombre d'extrémités de poils dénombrées par un observateur fixe au cours d'une rotation de 180° de la brosse autour de son âme.The brush may comprise for example between 9 and 100 hairs per turn, and better between 10 and 80 hairs per turn. The number of hairs per turn corresponds to the number of hair ends counted by a fixed observer during a rotation of 180 ° of the brush around his soul.

En variante, la brosse peut être réalisée par moulage, par exemple d'une seule pièce, notamment par injection, ou par surmoulage des poils sur l'âme. Une telle brosse moulée peut également être désignée par le terme "peigne", et les poils par le terme "dents".As a variant, the brush may be made by molding, for example in one piece, in particular by injection, or by overmolding the bristles on the core. Such a molded brush may also be referred to as a "comb", and the bristles as "teeth".

Au sens de la présente invention, il faut comprendre par « poil » tout élément saillant individualisable porté par l'âme. Les termes « poil », « élément saillant » ou « dent » sont interchangeables, même si le terme « poil » est habituellement utilisé pour désigner les éléments saillants rapportés sur une âme, par exemple dans le cas d'une brosse à âme torsadée, et le terme « dent » est souvent utilisé pour désigner les éléments d'application d'une brosse ou peigne réalisé par moulage.For the purposes of the present invention, "hair" means any salient individualizable element carried by the soul. The terms "hair", "protruding element" or "tooth" are interchangeable, although the term "hair" is usually used to designate the salient elements reported on a core, for example in the case of a twisted core brush, and the term "tooth" is often used to designate the application elements of a brush or comb made by molding.

La configuration de la brosse moulée peut être obtenue par la forme du moule servant au moulage ou en variante l'âme peut être déformée au moment du démoulage, par une torsion exercée sur celle-ci notamment alors que la matière est encore chaude.The configuration of the molded brush can be obtained by the shape of the mold used for molding or alternatively the core can be deformed at the time of demolding, by a twist exerted on it in particular while the material is still hot.

L'âme de l'applicateur peut être de section transversale polygonale, par exemple en forme de polygone régulier ou non, par exemple triangulaire, carrée, rectangulaire, pentagonale, hexagonale, heptagonale, ou octogonale. Les faces de l'âme peuvent être planes ou légèrement concaves ou légèrement convexes.The core of the applicator may be of polygonal cross-section, for example in the form of a regular polygon or not, for example triangular, square, rectangular, pentagonal, hexagonal, heptagonal, or octagonal. The faces of the soul may be flat or slightly concave or slightly convex.

L'âme peut comporter entre 3 et 8 faces longitudinales, voire entre 3 et 6 faces longitudinales.The core may comprise between 3 and 8 longitudinal faces, or even between 3 and 6 longitudinal faces.

Les faces longitudinales de l'âme peuvent être séparées par des arêtes.The longitudinal faces of the core may be separated by ridges.

Les dents peuvent avoir toutes formes.Teeth can have any shape.

La tige peut comporter une partie distale élastiquement déformable. Cette partie distale peut par exemple être formée par un embout rapporté sur le reste de la tige, lequel peut être réalisé dans une matière plus rigide. L'embout peut comporter une ou plusieurs gorges annulaires lui conférant plus de flexibilité.The rod may comprise an elastically deformable distal portion. This distal portion may for example be formed by a tip attached to the rest of the rod, which may be made of a more rigid material. The tip may have one or more annular grooves giving it more flexibility.

La tige peut comporter une portion proximale opposée à la portion distale, à laquelle se raccorde un organe de préhension de l'applicateur.The stem may comprise a proximal portion opposite to the distal portion, to which is connected a gripping member of the applicator.

L'invention a encore pour objet un dispositif de conditionnement et d'application comportant un récipient contenant le produit à appliquer sur les cils ou sourcils et un applicateur tel que défini plus haut.The invention further relates to a packaging device and application comprising a container containing the product to be applied to the eyelashes or eyebrows and an applicator as defined above.

Le dispositif peut comporter un organe d'essorage de la brosse à sa sortie du récipient, par exemple disposé sur un col du récipient.The device may comprise a wiper member of the brush at its outlet from the container, for example arranged on a neck of the container.

L'organe de préhension de l'applicateur peut servir de capuchon de fermeture du récipient. Ils peuvent par exemple coopérer par vissage. Le récipient et le capuchon de fermeture peuvent être configurés de manière à assurer l'étanchéité de la fermeture du récipient.The gripper of the applicator can serve as closing cap of the container. They can for example cooperate by screwing. The container and the closure cap may be configured to seal the closure of the container.

L'invention a encore pour objet un procédé de fabrication d'une brosse à âme torsadée d'un applicateur tel que défini plus haut, dans lequel on incurve l'âme autour d'au moins deux axes de courbure selon un premier et un deuxième rayon de courbure, les deux axes de courbures pouvant être parallèles et les deux rayons de courbure pouvant être différents.The subject of the invention is also a process for manufacturing a twisted-core brush of an applicator as defined above, in which the core is bent around at least two axes of curvature according to a first and a second radius of curvature, the two axes of curvature being parallel and the two radii of curvature may be different.

L'invention a encore pour objet un procédé de traitement cosmétique, notamment de maquillage, des cils ou des sourcils, comportant l'étape consistant à appliquer un produit sur les cils ou sourcils à l'aide d'un applicateur tel que défini précédemment.The invention also relates to a cosmetic treatment process, especially makeup, eyelashes or eyebrows, comprising the step of applying a product on the eyelashes or eyebrows using an applicator as defined above.

L'invention pourra être mieux comprise à la lecture de la description détaillée qui va suivre, d'exemples de mise en oeuvre non limitatifs de celle-ci, et à l'examen du dessin annexé, sur lequel :

  • la figure 1 est une vue schématique en élévation, avec coupe axiale partielle, d'un exemple de dispositif de conditionnement et d'application selon l'invention,
  • la figure 2 représente de manière schématique et partielle, en perspective, l'applicateur du dispositif de la figure 1,
  • les figures 3 et 4 représentent partiellement l'applicateur des figures 1 et 2 selon les directions d'observation III et IV de la figure 2, perpendiculaires entre elles,
  • la figure 5 est une section transversale schématique et partielle selon V-V de la figure 2,
  • la figure 6 est une vue analogue à la figure 3 d'une variante de réalisation,
  • la figure 6a est une vue analogue à la figure 2 d'une variante de réalisation,
  • les figures 7 à 10 sont des exemples parmi d'autres, en section longitudinale, de surfaces enveloppe d'ébauches de brosses permettant d'obtenir des applicateurs conformes à l'invention,
  • les figures 11 à 21, 16a à 16c, 21a et 21b illustrent des exemples de sections transversales de la surface enveloppe, parmi d'autres,
  • les figures 22 à 39 représentent divers exemples de sections transversales de poils,
  • la figure 40 représente en vue de côté un poil ondulé,
  • les figures 41 à 44 représentent de manière schématique et partielle des exemples de poils,
  • les figures 45 et 46 représentent des âmes torsadées respectivement à pas à gauche et à droite,
  • la figure 47 représente schématiquement une âme double formée par l'enroulement de deux âmes élémentaires torsadées, et
  • les figures 48 et 49 illustrent la possibilité de réaliser la tige avec une portion distale flexible.
The invention will be better understood on reading the following detailed description, non-limiting examples of implementation thereof, and on examining the appended drawing, in which:
  • the figure 1 is a schematic view in elevation, with partial axial section, of an exemplary packaging and application device according to the invention,
  • the figure 2 represents schematically and partially, in perspective, the applicator of the device of the figure 1 ,
  • the Figures 3 and 4 partially represent the applicator of Figures 1 and 2 according to the observation directions III and IV of the figure 2 , perpendicular to each other,
  • the figure 5 is a schematic and partial cross-section according to VV of the figure 2 ,
  • the figure 6 is a view similar to the figure 3 an alternative embodiment,
  • the figure 6a is a view similar to the figure 2 an alternative embodiment,
  • the Figures 7 to 10 are examples among others, in longitudinal section, of brush blank blank surfaces for obtaining applicators according to the invention,
  • the FIGS. 11 to 21, 16a to 16c, 21a and 21b illustrate examples of cross sections of the envelope surface, among others,
  • the Figures 22 to 39 represent various examples of cross sections of bristles,
  • the figure 40 represents in side view a wavy hair,
  • the Figures 41 to 44 represent schematically and partially examples of hair,
  • the Figures 45 and 46 represent twisted souls respectively with left and right steps,
  • the figure 47 schematically represents a double core formed by the winding of two twisted elementary cores, and
  • the Figures 48 and 49 illustrate the possibility of producing the stem with a flexible distal portion.

On a représenté à la figure 1 un dispositif de conditionnement et d'application 1 comportant un récipient 2 contenant un produit P à appliquer sur les cils ou les sourcils, par exemple du mascara, et un applicateur 3 comportant une tige 4, par exemple de section transversale circulaire, munie à sa portion distale 4a d'une brosse 5 et se raccordant à son extrémité proximale à un organe de préhension 6 constituant également un capuchon de fermeture pour le récipient 2. Ce dernier est équipé d'un organe d'essorage 7, par exemple constitué par une pièce en élastomère insérée dans le col 8 du récipient. L'organe d'essorage 7 peut être conventionnel ou non, voire être réglable.We have shown figure 1 a packaging and application device 1 comprising a container 2 containing a product P to be applied to the eyelashes or eyebrows, for example mascara, and an applicator 3 comprising a rod 4, for example of section circular transverse, provided at its distal portion 4a of a brush 5 and connected at its proximal end to a gripping member 6 also constituting a closure cap for the container 2. The latter is equipped with a wiper member 7 , for example constituted by an elastomer piece inserted into the neck 8 of the container. The wiper member 7 may be conventional or not, or even be adjustable.

La tige 4 présente, dans l'exemple considéré, un axe longitudinal X rectiligne, qui coïncide avec l'axe du col 8 du récipient 2 lorsque l'applicateur est en place sur celui-ci, et avec l'axe longitudinal de sa portion distale 4a.The rod 4 has, in the example considered, a rectilinear longitudinal axis X, which coincides with the axis of the neck 8 of the container 2 when the applicator is in place thereon, and with the longitudinal axis of its portion. distal 4a.

L'organe d'essorage 7 comporte, dans l'exemple illustré, un orifice d'essorage 9 de section circulaire, dont le diamètre correspond sensiblement à celui de la tige 4.The wiper member 7 comprises, in the illustrated example, a wiping orifice 9 of circular section, whose diameter corresponds substantially to that of the rod 4.

L'organe de préhension 6 peut être cylindrique de révolution, comme illustré, ou en variante comporter au moins un méplat et/ou repère permettant d'indexer la brosse par rapport à l'organe de préhension.The gripping member 6 may be cylindrical of revolution, as illustrated, or alternatively comprise at least one flat and / or landmark for indexing the brush relative to the gripping member.

La brosse 5 comporte une âme 10 formée par deux brins métalliques torsadés, l'âme étant donc autre qu'une âme en matière thermoplastique, cette âme 10 ayant une portion proximale fixée dans un logement de la tige 4, étant par exemple insérée à force dans ce logement. Les deux brins proviennent par exemple du repliement sur lui-même d'un fil métallique.The brush 5 comprises a core 10 formed by two twisted metal strands, the core being therefore other than a core of thermoplastic material, this core 10 having a proximal portion fixed in a housing of the rod 4, for example being inserted by force in this accommodation. Both strands come for example folding over itself of a wire.

Les brins de l'âme peuvent être torsadés à gauche ou à droite. Les brins de l'âme peuvent être de diamètre compris entre 0,35 mm et 1 mm, par exemple. La brosse peut être à pas à gauche. Sur la figure 48, on a représenté la brosse 5 avec une âme torsadée à gauche et sur la figure 49 avec une âme torsadée à droite. On pourra utilement se référer à ce sujet au brevet européen EP 611 170 .The strands of the soul can be twisted left or right. The strands of the core may have a diameter of between 0.35 mm and 1 mm, for example. The brush may be left-handed. On the figure 48 , the brush 5 is shown with a twisted core on the left and on the figure 49 with a twisted soul on the right. We can usefully refer to this subject to the European patent EP 611 170 .

L'âme 10 de la brosse s'étend selon un axe longitudinal Y courbe.The core 10 of the brush extends along a longitudinal axis Y curve.

L'âme de la brosse décrit au moins deux incurvations, d'une part autour d'un premier axe de courbure C1 selon un premier rayon de courbure r1, et d'autre part autour d'un deuxième axe de courbure C2 selon un deuxième rayon de courbure r2, comme illustré sur la figure 3. Les rayons de courbure sont mesurés aux sommets respectivement S1 et S2 des deux incurvations.The core of the brush describes at least two curvatures, first around a first axis of curvature C 1 along a first radius of curvature r 1 , and secondly around a second axis of curvature C 2 according to a second radius of curvature r 2 , as illustrated in the figure 3 . The radii of curvature are measured at the vertices respectively S 1 and S 2 of the two curvatures.

Dans l'exemple décrit, l'axe longitudinal de l'âme Y s'étend entièrement dans un plan, les axes de courbures C1 et C2 étant parallèles entre eux.In the example described, the longitudinal axis of the core Y extends entirely in one plane, the axes of curvature C 1 and C 2 being parallel to each other.

Quand on tourne la brosse de l'exemple illustré aux figures 1 à 5 de 90° autour de l'axe X, l'axe longitudinal Y apparait rectiligne, comme illustré à la figure 4, puisqu'il s'étend dans un seul plan qui est perpendiculaire au plan de la figure 1 et qui est le plan de la figure 3.When turning the brush of the example shown in Figures 1 to 5 90 ° around the X axis, the longitudinal axis Y appears rectilinear, as shown in FIG. figure 4 since it extends in a single plane that is perpendicular to the plane of the figure 1 and which is the plan of the figure 3 .

En outre, dans l'exemple décrit, le premier rayon de courbure r1 est inférieur au deuxième rayon de courbure r2, le premier axe de courbure C1 étant plus proche de la première extrémité 4a de la tige 4 que le deuxième axe de courbure C2.In addition, in the example described, the first radius of curvature r 1 is smaller than the second radius of curvature r 2 , the first axis of curvature C 1 being closer to the first end 4a of the rod 4 than the second axis of curvature r 1 curvature C 2 .

La distance d1 mesurée entre le sommet S1 de la première incurvation et l'axe X est inférieure à la distance d2 mesurée entre le sommet S2 de la deuxième incurvation et l'axe X.The distance d 1 measured between the vertex S 1 of the first curvature and the axis X is smaller than the distance d 2 measured between the vertex S 2 of the second curvature and the axis X.

L'axe longitudinal Y de l'âme de la brosse définit avec l'axe longitudinal X de la tige un point d'intersection A, représenté aux figures 2 et 3.The longitudinal axis Y of the core of the brush defines with the longitudinal axis X of the rod a point of intersection A, represented at Figures 2 and 3 .

On peut avoir, comme dans l'exemple de la figure 3, une longueur l1 mesurée entre le point A et la tige qui est inférieure à la longueur l2 mesurée entre le point A et l'extrémité distale de la brosse.We can have, as in the example of the figure 3 , a length l 1 measured between the point A and the rod which is less than the length l 2 measured between the point A and the distal end of the brush.

Par ailleurs, on peut aussi avoir, comme dans l'exemple décrit, l'âme de la brosse qui est courbe dès sa sortie du logement de la tige 4 dans laquelle elle est fixée.Moreover, one can also have, as in the example described, the core of the brush which is curved as it leaves the housing of the rod 4 in which it is fixed.

On a représenté sur la figure 6 un applicateur conforme à l'invention définissant trois points d'intersection A, B, C de l'axe longitudinal Y avec l'axe longitudinal X, la brosse comportant trois incurvations successives lui conférant une forme ondulée.We have shown on the figure 6 an applicator according to the invention defining three points of intersection A, B, C of the longitudinal axis Y with the longitudinal axis X, the brush having three successive incurvations conferring a wavy shape.

L'âme 10 porte des poils 11 maintenus par serrage entre les brins torsadés de l'âme 10 et s'étendant sensiblement radialement à partir de l'âme, comme on peut le voir sur les figures 3 et 4.The core 10 carries bristles 11 held by clamping between the twisted strands of the core 10 and extending substantially radially from the core, as can be seen on the Figures 3 and 4 .

Sur la figure 2, on a représenté la surface enveloppe E définie par les extrémités libres des poils 11 de la brosse 5. La surface enveloppe E peut être, comme illustré, de section transversale carrée.On the figure 2 , the envelope surface E defined by the free ends of the bristles 11 of the brush 5 is shown. The envelope surface E can be, as illustrated, of square cross-section.

La brosse 5 peut définir deux faces parallèles opposées 12 s'étendant sensiblement parallèlement à l'axe X, comme on peut le voir sur la figure 4, et deux faces opposées 13 s'étendant non parallèlement à l'axe X de la tige, comme on peut le voir sur la figure 3.The brush 5 can define two opposite parallel faces 12 extending substantially parallel to the axis X, as can be seen in FIG. figure 4 , and two opposite faces 13 extending non-parallel to the axis X of the rod, as can be seen on the figure 3 .

Dans l'exemple décrit, la surface enveloppe E est centrée par rapport à l'âme 10, mais on ne sort pas du cadre de la présente invention s'il en est autrement, la surface enveloppe E de la brosse 5 pouvant être excentrée par rapport à l'âme 10. En outre, la section transversale de la surface enveloppe E peut être d'une forme autre que carrée.In the example described, the envelope surface E is centered with respect to the core 10, but it is not beyond the scope of the present invention, if it is otherwise, the surface E envelope of the brush 5 being eccentric with respect to the core 10. In addition, the cross section of the envelope surface E may be of a shape other than square.

L'âme 10 de la brosse 5 peut porter des poils 11 sur sensiblement la totalité de la portion de l'âme 10 apparente située hors de la tige 4. En variante, l'âme 10 peut ne pas porter de poils sur une certaine distance après la tige 4.The core 10 of the brush 5 can bear bristles 11 over substantially the entire portion of the apparent core 10 located outside the shaft 4. Alternatively, the core 10 may not wear hair over a distance after the stem 4.

La surface enveloppe E peut présenter une partie distale tronquée en forme de pyramide ou de cône, par exemple, et il pourrait en être de même à proximité de la tige 4, afin de faciliter le passage de la brosse 5 à travers l'organe d'essorage 7.The envelope surface E may have a truncated distal portion in the form of a pyramid or cone, for example, and it could be the same in the vicinity of the rod 4, to facilitate the passage of the brush 5 through the body d spin 7.

Pour réaliser la brosse 5, on peut par exemple partir d'une ébauche de brosse de surface enveloppe cylindrique de révolution autour de l'axe X de la tige, l'axe longitudinal de l'âme de l'ébauche étant rectiligne et coaxial avec l'axe X.To produce the brush 5, it is possible, for example, to start from a surface brush blank with a cylindrical envelope of revolution about the axis X of the rod, the longitudinal axis of the core of the blank being rectilinear and coaxial with the X axis.

On peut, dans une première étape, usiner cette ébauche afin d'obtenir une section transversale non cylindrique de révolution, par exemple en réalisant les faces 12 et 13 planes et parallèles l'une avec l'autre. On peut par exemple tailler la brosse au moyen d'une tête coupante entraînée en rotation autour d'un axe de rotation perpendiculaire à l'axe longitudinal de la tige de façon à former les faces planes 12 et 13.It is possible, in a first step, to machine this blank in order to obtain a non-cylindrical cross section of revolution, for example by making the faces 12 and 13 planar and parallel to each other. For example, it is possible to cut the brush by means of a cutting head driven in rotation about an axis of rotation perpendicular to the longitudinal axis of the rod so as to form the plane faces 12 and 13.

Lors de la fabrication de la brosse, on peut usiner un premier côté puis faire tourner la brosse pour usiner le côté suivant. En variante, ce peut être la tête coupante qui est entraînée en déplacement par rapport à la brosse, ou les deux.When making the brush, one side can be machined and the brush rotated to machine the next side. Alternatively, it may be the cutting head that is driven in movement relative to the brush, or both.

L'ébauche peut être taillée alors que l'âme est déjà fixée sur la tige. Dans une variante, la brosse peut être usinée avant d'être fixée sur la tige.The blank can be cut while the soul is already attached to the rod. In a variant, the brush may be machined before being fixed on the rod.

Dans une deuxième étape, l'âme peut être cintrée autour des premier et deuxième axes de courbure C1 et C2 respectivement selon les premier et deuxième rayons de courbure r1 et r2, par exemple en utilisant un ou plusieurs gabarits de rayons différents autour duquel ou desquels on courbe simultanément ou successivement l'âme 10 de la brosse 5.In a second step, the core may be bent around the first and second axes of curvature C 1 and C 2 respectively according to the first and second radii of curvature r 1 and r 2 , for example using one or more jigs of different radii around which the core 10 of the brush 5 is bent simultaneously or successively.

Pour se maquiller, l'utilisateur dévisse l'applicateur et extrait la brosse 5 du récipient 2.For makeup, the user unscrews the applicator and extracts the brush 5 from the container 2.

L'utilisateur peut utiliser l'une des faces 12 parallèle à l'axe X de la tige 4 pour appliquer le produit P sur les cils ou sourcils et/ou peigner ces derniers de manière relativement homogène.The user can use one of the faces 12 parallel to the axis X of the rod 4 to apply the product P on the eyelashes or eyebrows and / or comb them relatively homogeneously.

L'utilisateur peut également faire tourner la brosse 5 sur elle-même autour de l'axe X, c'est-à-dire dans l'exemple décrit de 90°, et utiliser les faces 13 courbes pour appliquer le produit de manière non homogène, par exemple pour maquiller les extrémités de la frange de cils, notamment les coins de l'oeil.The user can also rotate the brush 5 on itself around the X axis, that is to say in the example described by 90 °, and use the curved faces 13 to apply the product in a non-linear manner. homogeneous, for example to make up the ends of the eyelash fringe, including the corners of the eye.

L'une des faces, par exemple une face courbe 13 ou une face 12, peut être indexée par rapport à un méplat et/ou un repère de l'organe de préhension. L'organe de préhension peut par exemple être de section transversale carrée, correspondant à la section transversale de la brosse, comme illustré sur la figure 6a.One of the faces, for example a curved face 13 or a face 12, may be indexed relative to a flat and / or a mark of the gripping member. The gripping member may for example be of square cross section, corresponding to the cross section of the brush, as illustrated in FIG. figure 6a .

Bien entendu, on peut apporter diverses modifications à l'applicateur et notamment à la brosse sans sortir du cadre de la présente invention.Of course, one can make various modifications to the applicator and in particular the brush without departing from the scope of the present invention.

Dans l'exemple de réalisation des figures 1 à 5, on est parti d'une ébauche de brosse cylindrique de révolution.In the exemplary embodiment of Figures 1 to 5 we started with a rough cylindrical brush of revolution.

Il peut en être autrement et l'on peut partir d'une ébauche présentant en section longitudinale une forme autre.It may be otherwise and one can start from a blank having in longitudinal section a different shape.

L'ébauche peut par exemple être de section longitudinale triangulaire ou trapézoïdale, comme illustré sur la figure 7, en forme de diabolo comme illustré sur la figure 8, lenticulaire comme illustré sur la figure 9, ou rectangulaire comme illustré sur la figure 10.The blank may for example be of triangular or trapezoidal longitudinal section, as illustrated in FIG. figure 7 , shaped diabolo as shown on the figure 8 , lenticular as illustrated on the figure 9 , or rectangular as illustrated on the figure 10 .

D'autre part, la surface enveloppe E de la brosse 5 peut présenter une section transversale de forme carrée, comme illustré sur les figures 1 à 5. En variante, la surface enveloppe E de la brosse peut présenter en section transversale, en au moins un point de sa longueur, une forme autre, comme illustré aux figures 11 à 21, 16a à 16c et 21a.On the other hand, the envelope surface E of the brush 5 may have a square cross-section, as illustrated in the drawings. Figures 1 to 5 . Alternatively, the envelope surface E of the brush may have in cross section, in at least one point of its length, a different shape, as illustrated in FIGS. FIGS. 11 to 21, 16a to 16c and 21a .

La section transversale de la surface enveloppe E de la brosse 5 peut par exemple être rectangulaire, comme illustré sur la figure 11, ou encore triangulaire, comme illustré sur la figure 12, lenticulaire comme illustré sur la figure 13 ou semi-elliptique comme illustré sur la figure 14.The cross section of the envelope surface E of the brush 5 may for example be rectangular, as illustrated in FIG. figure 11 , or triangular, as illustrated on the figure 12 , lenticular as illustrated on the figure 13 or semi-elliptical as shown on the figure 14 .

La section transversale de la surface enveloppe peut encore être en forme de losange, comme illustré à la figure 15, ou en trapèze, comme illustré à la figure 16.The cross-section of the envelope surface can still be diamond-shaped, as shown in FIG. figure 15 , or trapezoidal, as shown in figure 16 .

La section transversale de la brosse peut présenter des crans, comme illustré sur la figure 16a, ou des creux, comme illustré sur les figures 16b et 16c.The cross section of the brush may have notches, as shown in the figure 16a , or hollows, as shown on the Figures 16b and 16c .

Dans tous les exemples qui viennent d'être décrits, la face 12 est plane, mais on ne sort pas du cadre de la présente invention lorsque la face 12 est définie par une génératrice se déplaçant parallèlement à l'axe longitudinal X selon une directrice non rectiligne.In all the examples which have just been described, the face 12 is flat, but it is not beyond the scope of the present invention when the face 12 is defined by a generator moving parallel to the longitudinal axis X in a non-rectilinear direction.

A titre d'exemple, on a représenté à la figure 17 une brosse comportant au moins une face concave 12 de génératrice parallèle à l'axe X, et à la figure 18 une brosse avec au moins une face 12 convexe. Sur cette dernière figure, on voit que la brosse peut présenter une surface enveloppe de section transversale oblongue, en au moins un point de l'âme, notamment lenticulaire.For example, there is shown in the figure 17 a brush having at least one concave face 12 of generatrix parallel to the axis X, and at the figure 18 a brush with at least one convex face 12. In this last figure, we see that the brush may have an envelope surface of oblong cross section, at least one point of the core, in particular lenticular.

En variante encore, une section transversale de la brosse peut présenter un côté convexe, comme illustré sur la figure 19, ou deux côtés opposés convexes, comme illustré sur la figure 20.In another variant, a cross section of the brush may have a convex side, as illustrated in FIG. figure 19 , or two opposite convex sides, as illustrated on the figure 20 .

La section transversale de la brosse peut encore être en forme d'aile d'avion, comme illustré sur la figure 21.The cross section of the brush can still be in the shape of an airplane wing, as shown in the figure 21 .

D'une manière générale, la brosse peut présenter une section transversale constante ou non sur la majeure partie de sa longueur, voire sur la totalité de sa longueur. Elle peut diminuer en direction de son extrémité libre, comme illustré sur la figure 21a, la brosse étant alors de forme générale conique ou tronconique.In general, the brush may have a constant cross section or not over most of its length, or over its entire length. It may decrease towards its free end, as shown in figure 21a , the brush then being of generally conical or frustoconical shape.

La section transversale de la brosse peut être excentrée par rapport à l'âme de la brosse dans la section transversale, comme illustré sur la figure 21b.The cross section of the brush may be eccentric with respect to the brush core in the cross-section, as shown in FIG. figure 21b .

On peut utiliser dans une brosse réalisée conformément à l'invention toutes sortes de poils. On peut notamment utiliser un mélange de poils différents.It is possible to use in a brush made according to the invention all kinds of bristles. In particular, it is possible to use a mixture of different hairs.

Les brosses illustrées sont par exemple réalisées avec des poils de section circulaire de diamètre compris entre 6,5 centièmes de millimètre et 40 centièmes de millimètre.The brushes illustrated are for example made with bristles of circular section with a diameter of between 6.5 hundredths of a millimeter and 40 hundredths of a millimeter.

On peut utiliser des poils pleins ou creux, de section circulaire pleine ou présentant en section transversale l'une des formes représentées aux figures 22 à 39 de manière schématique, par exemple une forme circulaire avec un méplat comme illustré à la figure 22, aplatie comme illustré à la figure 23, étoilée, par exemple en forme de croix comme illustré à la figure 24 ou à trois branches comme illustré sur la figure 25, en forme de U comme représenté à la figure 26, de H comme représenté à la figure 27, de T comme représenté à la figure 28, de V comme représenté à la figure 29, une forme évidée, par exemple circulaire comme représenté à la figure 30 ou carrée comme représenté à la figure 31, formant des ramifications, par exemple en forme de flocon comme illustré à la figure 32, de section prismatique, par exemple triangulaire comme représenté à la figure 33, carrée comme représenté à la figure 34 ou hexagonale comme représenté à la figure 35, ou encore une forme oblongue, notamment lenticulaire comme représenté à la figure 36, ou en forme de sablier comme représenté à la figure 37. On peut utiliser des poils ayant des parties articulées les unes par rapport aux autres, comme représenté à la figure 38. On peut encore utiliser des poils présentant au moins une rainure capillaire 36, comme illustré à la figure 39.Full or hollow bristles, of solid circular section or having in cross-section one of the shapes represented by Figures 22 to 39 schematically, for example a circular shape with a flat as illustrated in FIG. figure 22 flattened as shown in figure 23 , star-shaped, for example in the form of a cross as illustrated in figure 24 or three branches as shown on the figure 25 , U-shaped as shown in FIG. figure 26 , of H as shown in figure 27 , of T as shown in figure 28 , from V as shown in figure 29 , a recessed form, for example circular as shown in FIG. figure 30 or square as shown in the figure 31 , forming branches, for example flake-shaped as illustrated in FIG. figure 32 , of prismatic section, for example triangular as shown in FIG. figure 33 , square as shown in figure 34 or hexagonal as shown in the figure 35 , or an oblong, in particular lenticular shape as shown in FIG. figure 36 , or hourglass-shaped as shown in the figure 37 . Hair having articulated portions relative to one another can be used as shown in FIG. figure 38 . It is also possible to use bristles having at least one capillary groove 36, as illustrated in FIG. figure 39 .

Les poils 11 qui sont retenus entre les brins torsadés de l'âme peuvent présenter, avant mise en place entre les brins de l'âme, une forme rectiligne ou non, par exemple une forme ondulée comme illustré à la figure 40.The bristles 11 which are retained between the twisted strands of the core may have, before placement between the strands of the core, a rectilinear shape or not, for example a wavy shape as illustrated in FIG. figure 40 .

On peut faire subir aux poils un traitement visant à former à leurs extrémités des boules 37 comme illustré à la figure 41, ou des fourches 38 comme illustré à la figure 42.The bristles may be treated to form balls 37 at their ends as illustrated in FIG. figure 41 , or forks 38 as shown in FIG. figure 42 .

On peut utiliser des poils floqués comme illustré à la figure 43 ou encore des poils réalisés par extrusion d'une matière plastique comportant une charge de particules 39, par exemple des particules d'un matériau absorbant l'humidité, afin de conférer un micro-relief à la surface des poils, comme illustré à la figure 44, ou leur donner des propriétés magnétiques ou autres.Flocked hairs can be used as illustrated in figure 43 or else bristles made by extrusion of a plastic material having a charge of particles 39, for example particles of a moisture-absorbing material, in order to impart a micro-relief to the surface of the bristles, as illustrated in FIG. figure 44 , or give them magnetic or other properties.

La brosse peut être magnétisable ou magnétisée.The brush may be magnetizable or magnetized.

Les poils peuvent encore être réalisés avec un matériau présentant des propriétés favorisant le glissement et/ou leur élasticité.The bristles may also be made of a material having properties promoting sliding and / or elasticity.

Les poils peuvent être naturels ou synthétiques et par exemple être fabriqués dans une matière choisie parmi : PE, PA, notamment PA6, PA6/6, PA6/10 ou PA6/12, HYTREL®, PEBAX®, silicone, PU, cette liste n'étant pas limitative.The bristles may be natural or synthetic and for example be made of a material selected from: PE, PA, in particular PA6, PA6 / 6, PA 6/10 or PA-6/12, HYTREL ®, PEBAX ®, silicone, PU, this list n not being limiting.

Les poils de la brosse peuvent subir un traitement d'abrasion, de meulage, de matriçage ou de fusion à chaud, notamment à leur extrémité.The bristles of the brush may undergo abrasion treatment, grinding, stamping or hot melt, especially at their end.

Les poils peuvent se croiser.The hair can cross.

La brosse peut comporter au moins une portion comportant des poils incurvés s'étendant de manière orientée à partir de l'âme, par exemple comme décrit dans la demande US 2004/0168698 . Par « s'étendant de manière orientée », il faut comprendre que les poils incurvés s'étendent avec une orientation générale qui est définie lors de la fabrication de la brosse et non pas avec une orientation totalement aléatoire. Les poils peuvent notamment être orientés dans le même sens circonférentiel autour de l'âme. Les poils peuvent être incurvés par contact avec une surface chaude, notamment une surface en mouvement relatif par rapport à la brosse.The brush may comprise at least one portion comprising curved bristles extending in a direction directed from the core, for example as described in the application US 2004/0168698 . By "extending in an oriented manner" it is to be understood that the curved hairs extend with a general orientation which is defined during the manufacture of the brush and not with a totally random orientation. Hairs can in particular be oriented in the same circumferential direction around the soul. The bristles may be curved by contact with a hot surface, including a surface in relative motion relative to the brush.

La brosse peut comporter au moins deux poils déformés, par exemple pris entre deux spires adjacentes, ces poils présentant un enlèvement de matière ou un écrasement en au moins un point de leur longueur depuis l'âme et s'étendant non radialement vers l'extérieur à partir de ce point, comme décrit dans la demande US 2004/0240926 . Chaque poil déformé peut comporter deux portions rectilignes formant un coude entre elles. Les deux portions rectilignes peuvent présenter la même section transversale. Tous les poils déformés peuvent définir des coudes tous situés sensiblement à la même distance de l'âme.The brush may comprise at least two deformed bristles, for example caught between two adjacent turns, these bristles having a removal of material or crushing in at least one point of their length from the core and extending non radially outwardly from this point, as described in the application US 2004/0240926 . Each deformed hair may comprise two rectilinear portions forming a bend between them. The two rectilinear portions may have the same cross section. Any deformed bristles may define elbows all located substantially at the same distance from the core.

On peut utiliser dans une variante, pour réaliser l'âme, un double fil de fer qui est lui-même torsadé pour enserrer les poils, ce qui peut permettre de rendre la distribution des extrémités libres des poils plus aléatoire. On peut encore former la brosse en torsadant entre elles deux âmes torsadées portant chacune des poils, comme illustré à la figure 47. Les deux âmes élémentaires peuvent être chacune constituées par une branche d'une seule âme torsadée repliée en forme de U, les deux branches étant torsadées ensemble.One can use in a variant, to achieve the soul, a double wire which is itself twisted to grip the hairs, which can make the distribution of the free ends of the hairs more random. It is also possible to form the brush by twisting between them two twisted cores each carrying bristles, as illustrated in FIG. figure 47 . The two elementary cores can each be constituted by a branch of a single twisted core folded U-shaped, the two branches being twisted together.

La tige 5 peut être munie en extrémité, comme illustré à la figure 48, d'un embout 80 élastiquement déformable qui sert de support à l'âme de la brosse et qui autorise un certain débattement angulaire lors du retrait de la brosse du récipient ou lors de l'application, comme illustré à la figure 49. Cet embout comporte par exemple une gorge 81. L'embout est par exemple tel que décrit dans EP 1 917 883 A2 et peut être réalisé au moins partiellement dans un matériau de la liste suivante : matériau élastomère, thermoplastique, thermoplastique élastomère, PEBD, PVC, PU, les polyesters élastomères thermoplastiques, notamment les copolymères de téréphtalate de butène et de polytétraméthylèneoxyde glycol estérifié, HYTREL®, EPDM, PDM, EVA, SIS, SEBS, SBS, latex, silicone, nitrile, butyl, polyuréthane, polyéther bloc amide, polyester, cette liste n'étant pas limitative. L'embout peut être réalisé avec un matériau dont la dureté est par exemple comprise entre 25 Shore A et 80 Shore D, voire entre 40 Shore A et 70 Shore D. La ou les parties rigides de la tige peuvent être réalisées dans un matériau thermoplastique, notamment l'un des matériaux choisis dans la liste suivante : PEHD, PEBD, PE linéaire, PT, PP, POM, PA, PET, PBT, cette liste n'étant pas exhaustive.The rod 5 may be provided at the end, as illustrated in FIG. figure 48 , an elastically deformable tip 80 which serves as a support for the core of the brush and which allows a certain angular movement during removal of the brush from the container or during application, as illustrated in FIG. figure 49 . This tip comprises for example a groove 81. The tip is for example as described in EP 1 917 883 A2 and can be produced at least partially from a material from the following list: elastomer, thermoplastic, thermoplastic elastomer, LDPE, PVC, PU, polyester thermoplastic elastomers, especially terephthalate butene copolymers and polytetramethylene esterified glycol, HYTREL ®, EPDM, PDM, EVA, SIS, SEBS, SBS, latex, silicone, nitrile, butyl, polyurethane, polyether amide block, polyester, this list not being limiting. The tip may be made of a material whose hardness is for example between 25 Shore A and 80 Shore D, or even between 40 Shore A and 70 Shore D. The rigid part or parts of the rod may be made of a thermoplastic material , in particular one of the materials selected from the following list: HDPE, LDPE, linear PE, PT, PP, POM, PA, PET, PBT, this list not being exhaustive.

Bien entendu, l'invention n'est pas limitée aux exemples de réalisation qui viennent d'être décrits.Of course, the invention is not limited to the embodiments which have just been described.

La brosse peut être mise en vibration soit par un générateur monté dans l'applicateur, notamment sur l'organe de préhension, de manière amovible ou non, soit par un élément vibrant extérieur monté sur un doigt de l'utilisateur, par exemple.The brush may be vibrated either by a generator mounted in the applicator, in particular on the gripping member, removably or not, or by an external vibrating element mounted on a finger of the user, for example.

Un générateur de vibrations est décrit dans la demande de brevet français FR 2 882 506 . Les vibrations peuvent permettre d'obtenir une meilleure séparation des cils et dans le cas de l'utilisation d'une composition comportant des fibres, une meilleure orientation de celles-ci et/ou une facilité de prélèvement. Lors du prélèvement, l'élément d'application peut être soumis aux vibrations de la source vibrante, ce qui peut permettre d'obtenir le cas échéant une charge plus homogène de produit sur l'élément d'application.A vibration generator is described in the French patent application FR 2 882 506 . The vibrations can make it possible to obtain a better separation of the eyelashes and in the case of the use of a composition comprising fibers, a better orientation thereof and / or an ease of sampling. During sampling, the applicator element may be subjected to vibrations from the vibrating source, which may make it possible to obtain, if necessary, a more homogeneous product load on the applicator element.

Lorsque la brosse est observée en section transversale, l'âme peut être centrale. En variante, l'âme peut être excentrée dans la section transversale de la brosse.When the brush is viewed in cross-section, the core may be central. Alternatively, the core may be eccentric in the cross section of the brush.

On peut utiliser un organe d'essorage dont l'orifice d'essorage est défini par une lèvre ondulée.It is possible to use a wiper member whose wiper orifice is defined by a wavy lip.

La brosse peut comporter une ou plusieurs encoches, qui peuvent s'étendre jusqu'à l'âme de la brosse.The brush may have one or more notches, which may extend to the core of the brush.

L'expression "comportant un" doit être comprise comme étant synonyme de "comportant au moins un".The expression "having one" should be understood as being synonymous with "having at least one".

Claims (14)

  1. An applicator (3) for applying a cosmetic composition to the eyelashes or the eyebrows, including:
    - a stem (4) having a distal portion (4a) extending along a longitudinal axis (X), and
    - a brush (5) fastened to the distal portion (4a) of the stem, said brush comprising a core (10) carrying bristles (11), the core extending along a longitudinal axis (Y) that is entirely contained within a plane and having a first curve that is concave towards a first side and having a second curve that is concave towards a second side opposite from the first side, the first curve being different from the second curve,
    the longitudinal axis (Y) of the core crossing the longitudinal axis (X) of the stem at least once,
    the core (10) of the brush not turning back towards the distal portion of the stem on going along the longitudinal axis (Y) of the core towards its free end, and
    the first and second curves each including a vertex (S1, S2), the two vertices being situated on either side of the longitudinal axis of the stem.
  2. The applicator according to the preceding claim, wherein the tangent to the longitudinal axis of the core at any point along the core forms an angle with the longitudinal axis of the stem that is less than 90° for all points of the core.
  3. The applicator according to any one of the preceding claims, wherein the first and second curves differ in at least one of the following characteristics: shape of the curve; radius of curvature.
  4. The applicator according to any preceding claim, wherein the first radius of curvature (r1) measured at the vertex (S1) of the first curve is smaller than the second radius of curvature (r2) measured at the vertex (S2) of the second curve, the first curve being situated closer to the distal portion of the stem than the second curve.
  5. The applicator according to any preceding claim, wherein the distance (d1; d2) between the vertex (S1; S2) of a curve and the longitudinal axis (X) of the stem is not zero for at least the first curve and the second curve.
  6. The applicator according to any preceding claim, wherein the first curve extends along the longitudinal axis of the stem over a first length (l1) that is less than a second length (l2) over which the second curve extends along the longitudinal axis.
  7. The applicator according to any preceding claim, wherein the longitudinal axis of the core defines a third curve that is concave towards the first side.
  8. The applicator according to any preceding claim, wherein the longitudinal axis (Y) of the core and the longitudinal axis (X) of the stem intersect at a plurality of points (A, B, C), in particular two or even three points.
  9. The applicator according to any preceding claim, wherein the brush includes a distal portion that is rectilinear and that extends along the longitudinal axis of the stem.
  10. The applicator according to any preceding claim, wherein the free ends of the bristles of the brush define an envelope surface E that is not circularly symmetrical about the longitudinal axis of the core, when straightened out for the purpose of observation.
  11. The applicator according to any preceding claim, wherein the brush presents two opposite main faces (12) that are planar and parallel to each other.
  12. A packaging and applicator device comprising a container containing the composition for application to the eyelashes or the eyebrows, and an applicator as defined in any preceding claim.
  13. The device according to the preceding claim, including a wiper member for wiping the brush while it is being taken out of the container.
  14. A cosmetic treatment method for treating the eyelashes or the eyebrows, wherein use is made of an applicator as defined in any one of claims 1 to 11.
EP10156415.1A 2009-03-20 2010-03-12 Applicator for applying cosmetic substances on eyelashes or eyebrows Active EP2229839B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0951798A FR2943227B1 (en) 2009-03-20 2009-03-20 APPLICATOR FOR APPLYING A COSMETIC PRODUCT TO LACQUERS OR EYEBROWS
US17024709P 2009-04-17 2009-04-17

Publications (3)

Publication Number Publication Date
EP2229839A2 EP2229839A2 (en) 2010-09-22
EP2229839A3 EP2229839A3 (en) 2011-03-23
EP2229839B1 true EP2229839B1 (en) 2017-06-28

Family

ID=41491664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10156415.1A Active EP2229839B1 (en) 2009-03-20 2010-03-12 Applicator for applying cosmetic substances on eyelashes or eyebrows

Country Status (7)

Country Link
US (1) US8651117B2 (en)
EP (1) EP2229839B1 (en)
JP (1) JP5846723B2 (en)
CN (1) CN101836790B (en)
BR (1) BRPI1000899B1 (en)
ES (1) ES2640010T3 (en)
FR (1) FR2943227B1 (en)

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Also Published As

Publication number Publication date
CN101836790B (en) 2013-06-12
FR2943227A1 (en) 2010-09-24
BRPI1000899A2 (en) 2011-03-22
JP2010221039A (en) 2010-10-07
EP2229839A2 (en) 2010-09-22
FR2943227B1 (en) 2011-06-03
US20110083693A1 (en) 2011-04-14
JP5846723B2 (en) 2016-01-20
US8651117B2 (en) 2014-02-18
ES2640010T3 (en) 2017-10-31
BRPI1000899B1 (en) 2020-05-12
CN101836790A (en) 2010-09-22
EP2229839A3 (en) 2011-03-23

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