Classifications

• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
  • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
  • A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
  • A45D40/265—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like connected to the cap of the container
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
  • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
  • A45D34/042—Appliances specially adapted for applying liquid, e.g. using roller or ball using a brush or the like
  • A45D34/045—Appliances specially adapted for applying liquid, e.g. using roller or ball using a brush or the like connected to the cap of the container
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
  • A46B3/18—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed on or between belts or wires
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
  • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
• • A—HUMAN NECESSITIES
  • A45—HAND OR TRAVELLING ARTICLES
  • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
  • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
  • A45D2034/002—Accessories
• • 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
  • A45D2040/0006—Accessories
• • 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 brushes for applying a cosmetic product to the eyelashes or eyebrows, notably a makeup or care product, for example mascara, and to packaging and application devices comprising such a brush.
• the brush comprises a core formed by two arms of a metal wire that are twisted together and grip bristles. Since the bristles used are generally the same length, once the branches are twisted, the brush has an envelope surface in the form of a cylinder of revolution. Such a cylinder of revolution form has limited effectiveness in terms of loading the eyelashes with product and separation.
• EP 1 236 419, EP 1 236 420 and EP 1 236 421 disclose mascara brushes that can comprise substantially flat facets parallel to the core, having a generally oval contour. In those applications, the facets of one and the same brush are all identical.
• the patent application FR 2 916 950 discloses a mascara brush having a rectilinear longitudinal axis and a polygonal cross section, along at least a part of its length.
• FR 3 007 630 discloses a mascara brush having a rectilinear longitudinal axis and comprising facets that are disposed such that the brush comprises hollows alternating with reliefs around the core. There is a need to make the application of makeup easier along the entire row of eyelashes, and notably at the corner of the eye.
• the invention aims to meet all or some of these needs and therefore the subject thereof, independently or in combination with the above, according to one of its aspects, is a brush for applying a product to the eyelashes and/or eyebrows, comprising:
• a core notably a twisted core, that extends along a curved longitudinal axis X, and
• the core comprising notably a portion carrying bristles that has a proximal end intended to be fixed to a stem and a distal end, the bristles having free ends that define an envelope surface,
• the envelope surface having, before the core is curved, at least one first facet and at least one second facet which are different from one another.
• the first facet may be disposed in the hollow of the curvature of the core. It is thus possible to form a region that can make it possible to constitute a larger reserve of product in the curvature of the core.
• the second facet provides different makeup characteristics on account of its different location and its different shape.
• facet denotes a cutout in the envelope surface of the brush, delimited by visible edges.
• a facet is preferably defined by a generatrix extending in a plane perpendicular to the longitudinal axis of the core and moving along a directrix, for example coplanar with the longitudinal axis of the core.
• a facet may be flat or non-flat, having for example an outwardly concave or convex curvature. Such a curvature can depend on the shape of the generatrix, be it rectilinear or curved. In a variant, the curvature of the facet can vary, the latter being for example wavy.
• facets that are different from one another should be understood as meaning that the first and second facets differ from one another by at least one of their width, length, depth, distance from the core, and inclination with respect to the core.
• the second facet may be smaller than the first facet.
• small means that at least one of its width and/or its length and/or its depth is smaller than the width and/or length and/or depth of the first facet.
• the distance of the second facet from the core may be greater than the distance of the first facet from the core.
• the second facet may be farther away from the core than the first facet, and thus be subjected to more vigorous wiping on passing through the wiping member.
• the area taken up by the second facet may differ from that taken up by the first facet by more than 10%, that is to say that
• /Si > 0.3 is possible.
• each first or second facet preferably extends about the axis over an angular extent of less than 120°. This ensures that each facet is located on one side of the brush.
• the brush may comprise at least two second facets.
• the two second facets may be smaller than the first facet.
• the two second facets may be symmetrical to one another with respect to a plane containing the longitudinal axis of the core.
• the first and second facets may form a triangle when the brush is viewed in cross section.
• the first and/or second facet, or both facets may have a width which increases in the direction of the proximal end of the portion of the core carrying the bristles, along at least a portion of the length of the facet, or even along the entire length of the facet.
• the first and/or second facet, or both facets may have a width which decreases in the direction of the distal end of the portion of the core carrying the bristles, along at least a portion of the length of the facet.
• the width / of a facet may decrease along its entire length measured along the longitudinal axis of the core, or else along only a portion of the latter.
• the width / of the facet may decrease along at least half of its length L2, or even along at least 2/3 of its length L2, better still along at least 3 ⁇ 4 of its length L2.
• the width / of the facet may increase and then decrease, and then increase again, or else decrease and then increase, towards the distal end of the portion of the core carrying the bristles.
• the widest part of the facet may be situated closer to the proximal end than to the distal end of the portion of the core carrying the bristles, better still by less than a third, or even less than a quarter of the length L of the portion of the core carrying the bristles, with respect to the proximal end.
• the width / of the first facet decreases in the direction of the distal end of the portion of the core carrying the bristles.
• the first and/or the second facet may extend along the entire length L of the portion of the core carrying the bristles, or else along only a part of the latter, for example along at least 50% of this length L, better still at least 60%, or even at least 70%.
• the facet may extend along less than 95% of the length L of the portion of the core carrying the bristles, or along less than 90%>, or even along less than 80%>.
• the first facet may notably extend along the entire length L of the portion of the core carrying the bristles.
• the second facet(s) may extend along less than 90% of the length L of the portion of the core carrying the bristles, or along less than 80%, or even along less than 70%.
• the first and/or the second facet, or both facets may notably extend as far as the proximal end of the portion of the core carrying the bristles.
• the first and/or second facets, or both facets may be delimited by an adge oriented perpendicularly to the longitudinal axis of the stem at the proximal end of the portion of the core carrying the bristles.
• the presence of such an edge makes it possible to improve the precision of makeup application, and in particular can make it easier to make up the eye, notably the corner of the eye, and even more particularly the inside corner of the eye.
• the width of the first facet may decrease in the direction of the distal end of the portion of the core carrying the bristles.
• the width of the second facet(s) may decrease in the direction of the distal end of the portion of the core carrying the bristles.
• the first and/or second facets may extend parallel to the longitudinal axis X of the core. This means that the facets are each made in a plane parallel to the longitudinal axis X of the core, before the latter is curved. It is possible for the envelope surface not to have facets that are not parallel to the longitudinal axis X of the core.
• the envelope surface may define at least one facet that extends longitudinally and is inclined with respect to the longitudinal axis X of the core in the direction of the distal end. It may be the first and/or the second facet, or even a third facet.
• inclined should be understood as meaning that a general direction of the facet forms an angle with the longitudinal axis of the core when the core of the brush is straightened for the purposes of observation.
• the generatrix defining the corresponding facet may notably move along a directrix that is not parallel to the longitudinal axis of the core, notably rectilinear and forming an angle with the latter, or curved.
• At least one of the first and second facets may be inclined in the direction of the distal end of the core. This means that the inclination of the facet with respect to the longitudinal axis of the core is such that the facet becomes closer to the longitudinal axis of the core towards the distal end of the brush, when the core of the brush is straightened for the purposes of observation. All the facets of the brush may be inclined in the direction of the distal end. It is possible for the brush not to have a facet inclined in the direction of the proximal end.
• At least one of the first and second facets may be inclined in the direction of the proximal end of the core. This means that the inclination of the facet with respect to the longitudinal axis of the core is such that the facet becomes closer to the longitudinal axis of the core towards the proximal end of the brush, when the core of the brush is straightened for the purposes of observation. All the facets of the brush may be inclined in the direction of the proximal end. It is possible for the brush not to have a facet inclined in the direction of the distal end.
• the facet may be inclined at an angle a of between 5 and 35 degrees, better still between 10 and 20 degrees, with respect to the longitudinal axis of the stem when the core of the brush is straightened for the purposes of observation.
• This means that the facet has a directrix D which is rectilinear and inclined at said angle a with respect to the longitudinal axis X of the stem, when the core of the brush is straightened for the purposes of observation.
• the facet is formed by the movement of a generatrix along this directrix D.
• the generatrix may for example extend along the rotation axis of a tool for cutting the facet, which may have a cylindrical shape and move along the directrix D during cutting.
• the envelope surface may have, before the core is curved, an at least partially frustoconical or ogival overall shape. This can make it possible to have regions on the envelope surface that are situated at different distances from the core and are thus wiped differently. The most loaded regions can be used to load the eyelashes with product and the less loaded regions can be used to separate the eyelashes.
• the envelope surface may comprise a distal frustoconical portion having a cross section that decreases towards the free end of the core.
• the angle ⁇ of the cone with respect to the longitudinal axis X may have a value of between 5 and 35 degrees, better still between 10 and 20 degrees.
• the distal frustoconical portion may extend along a length greater than a quarter of the length L of the portion of the core carrying the bristles, better still more than a third of the length L of the portion of the core carrying the bristles, even better still more than half the length L of the portion of the core carrying the bristles.
• the envelope surface may have at least one cross section having a not entirely polygonal shape, notably having an at least partially circular shape, notably having a circular shape at the distal end.
• the expression "at the distal end” means that said at least one cross section is closer to the distal end than the proximal end of the portion of the core carrying the bristles, in other words less than 1 ⁇ 2 L from the distal end of the portion of the core carrying the bristles and more than 1 ⁇ 2 L from the proximal end of the portion of the core carrying the bristles, where L is the length of the portion of the core carrying the bristles measured between its proximal end and its distal end.
• Said at least one cross section may be less than a third, or even less than a quarter of the length L from the distal end of the portion of the core carrying the bristles.
• the length L may be between 15 mm and 45 mm, better still between 20 mm and 40 mm, for example between 25 mm and 35 mm.
• the brush not to have a distal end in the form of a point. It may have a not entirely prismatic shape, at least at its distal end.
• the circular cross section may be made at a point on the core that is situated less than 1/3 L from the distal end of the portion of the core carrying the bristles and more than 2/3 L from the proximal end of the portion of the core carrying the bristles.
• the circular cross section may be made at a point on the core that is situated less than 1/4 L from the distal end of the portion of the core carrying the bristles and more than 3/4 L from the proximal end of the portion of the core carrying the bristles.
• the brush may not have any cross section with a rectangular shape, notably at its distal end.
• the core may be curved along the entire length of the portion of the core carrying the bristles.
• the curvature of the core may be constant or variable. The radius of curvature is for example between 20 and 60 mm. Since the brush is curved, it can be loaded more in the hollow and comb and separate better on the convex side.
• the distal end of the core may be situated on the longitudinal axis Y of a stem to which the brush is attached.
• the brush may comprise at least one cross section with a prismatic, notably substantially triangular, overall shape, this cross section being notably situated close to the proximal end of the portion of the core carrying the bristles.
• the cross section with a prismatic overall shape may be situated closer to the proximal end than to the distal end of the portion of the core carrying the bristles, better still less than a third, or even less than a quarter of the length L of the portion of the core carrying the bristles, with respect to the proximal end.
• the brush may comprise a proximal frustoconical portion at its proximal end, the frustoconical portion widening with increasing distance from the proximal end of the portion of the core carrying the bristles.
• the first and/or second facet, or both facets extend over the proximal frustoconical portion.
• the brush may also comprise a cylindrical central portion situated between the distal frustoconical portion and the proximal frustoconical portion.
• the first and/or second facet, or both facets cover the cylindrical central portion. Each facet stops for example shortly before or at the same level as the frustoconical portion.
• the brush may be chamfered at its proximal and/or distal ends. In one exemplary embodiment, the brush is chamfered at its distal and proximal ends.
• the brush according to the invention is notably able to store more product along a part of its length so as to provide an additional load of product to the eyelashes and/or eyebrows.
• the first facet may have a length L2 where L2 ⁇ L/2, L being the length of the portion of the core carrying the bristles.
• L2 of the first facet is such that ⁇ 2 ⁇ 2/3L.
• L2 is equal to L. This makes it possible to have a first facet which extends along a great majority of the length of the core carrying the bristles, thereby making it possible notably to obtain the desired effect on most of the eyelashes with minimum hand movements.
• the second facet(s) may have a length L3 where ⁇ 3 ⁇ L/2.
• the first facet may have a width / that is constant along at least a portion of its length L2.
• the width / of the first facet may be between 1 mm and 4 mm, better still between 1.5 mm and 3.5 mm.
• the facet(s) may have, in cross section, a flat bottom or an outwardly convex bottom.
• the envelope surface, apart from the facets, may be cylindrical.
• the envelope surface, apart from the facets, may be a surface of revolution.
• the envelope surface may be symmetrical with respect to the longitudinal axis X of the core. In a variant, the envelope surface does not exhibit axial symmetry.
• the core of the brush is fixed preferably by its proximal end to a stem.
• the stem may be fixed at its other end to a closure cap of a container.
• the core is a twisted core.
• twisted core should be understood as meaning a core formed by twisting together two arms of a metal wire in a conventional manner.
• a further subject of the invention is a packaging and application device comprising:
• the container may be provided with a wiping member for removing the excess product present on the stem and on the brush.
• This wiping member comprises for example a lip made of an elastomeric material, defining a wiping orifice which is preferably of circular section, the diameter of which corresponds substantially to that of the stem. Manufacturing method
• a further subject of the invention is a method for manufacturing a brush according to the invention, comprising the steps of: - producing a brush blank having a rectilinear core, notably having a twisted core, notably having an envelope surface that has, before the core is curved, a non- cylindrical shape, preferably a rotationally symmetrical shape, notably an at least partially frustoconical or ogival overall shape,
• the core is curved at the first facet such that the first facet is disposed in the hollow of the curvature of the core.
• the core is curved for example in a median plane of the first facet.
• the facet(s) can be formed by moving a cutting tool both along an axis parallel to the longitudinal axis of the core and along an axis perpendicular to the longitudinal axis of the core.
• the facet(s) can be formed by moving a cutting tool about an axis perpendicular to the longitudinal axis of the core, notably an axis parallel to the facet.
• the cutting tool preferably has a rotation axis parallel or perpendicular to the facet.
• Figure 1 shows an example of a packaging and application device according to the invention, in schematic and partial longitudinal section
• FIG. 2 is a side view of an example of a brush according to the invention
• Figure 3 is a view of the brush from Figure 2 before the core is curved
• Figure 4 is a view along the arrow IV
• Figures 5 and 6 are views similar to Figures 3 and 4 of a blank of the brush from Figure 2,
• Figure 7 is a view similar to Figure 2 of a variant brush according to the invention
• Figures 8 and 9 are views along the arrows VIII and IX, respectively, before the core is curved
• Figure 10 is a view along the arrow X.
• Figures 11 and 12 are views similar to Figures 5 and 6 of a blank of the brush from Figure 7.
• the packaging and application device 1 shown in Figure 1 comprises a container 2 containing a product P to be applied to the eyelashes or eyebrows and an applicator 3 which may be fixed removably to the container 2 in the example in question.
• the product P comprises, for example, one or more pigments, in particular an iron oxide. It is for example a mascara.
• the applicator 3 comprises a stem 5 of longitudinal axis Y, which stem 5 is provided at a distal end 5 a with a brush 10 according to the invention and is provided at the other end with a gripping member 11, which likewise forms a cap for closing the container 2 in a sealed manner.
• the latter comprises a body 13 which is provided at the top with a threaded neck 14 onto which the gripping member 11 can be screwed in order to close the container 2 in a sealed manner.
• the applicator can be fixed to the container in some other way.
• the neck 14 may accommodate, as illustrated, a wiping member 20 which is for example inserted into the neck 14.
• This wiping member 20 comprises a lip 26 that defines a wiping orifice having a diameter adapted to that of the stem 5.
• the brush 10 can be fixed, in a conventional manner, in a seat provided at the distal end 5a of the stem 5, which is advantageously made of a thermoplastic material.
• the brush 10 comprises a twisted metal core 40 comprising a portion 43 carrying bristles 41.
• the core is fixed at a proximal end 40a in the corresponding housing of the stem 5 by a portion that does not have bristles, it being possible for said portion to have a length of around 8 mm.
• the portion 43 of the core carrying the bristles has a free end 40b.
• the free ends of the bristles 41 define, as illustrated in Figure 2, an envelope surface S of the brush 10.
• the bristles 41 extend along a length L of the core of preferably between 25 mm and 35 mm, for example equal to 30 mm.
• the core 40 is formed conventionally by two arms of a metal wire folded in a U-shape, the bristles 41 being held between the turns of the core 40.
• the diameter of the metal wire is for example between 0.1 and 1 mm.
• the diameter of the bristles is for example between 0.06 and 0.35 mm.
• the core 40 of the brush 10 according to the invention is curved, extending along a curved longitudinal axis X. It is curved in a plane P which, in the example described, is a plane that contains the longitudinal axis X and is perpendicular to a first facet 60 which will be described below. This plane P is a plane of symmetry for the brush.
• the brush is curved along the entire length of the portion 43 and the distal end 40b of the core is situated on the longitudinal axis X and on the longitudinal axis Y of the stem.
• the envelope surface S comprises a first facet 60 which extends, before the core is curved, and as illustrated in Figures 3 and 4, parallel to the longitudinal axis X of the core and along a length L2 equal to the length L of the portion of the core carrying the bristles.
• the first facet 60 is disposed in the hollow of the curvature of the core, as illustrated in Figure 2.
• the core is curved in a plane P which is the plane of Figure 2, said plane P being perpendicular to a plane Q of the facet 60.
• the plane P is a median plane of the first facet.
• the first facet 60 has a width / which decreases in the direction of the distal end 40b of the portion 43 of the core carrying the bristles.
• the envelope surface S also comprises two second facets 45 which are symmetrical to one another with respect to a plane P containing the longitudinal axis of the core and form a triangle with the first facet 60 when the brush is viewed in cross section.
• the three facets 45 and 60 extend longitudinally and are flat, each extending in a plane parallel to the longitudinal axis X of the core.
• These second facets 45 are different from the first facet 60. They differ therefrom by way of their length L3 which corresponds to around 60% of the length L of the portion 43 of the core carrying the bristles. Their width e is also less than the width / of the first facet 60.
• the depth of the two second facets 45 is less than the depth of the first facet 60.
• the distance d2 of the second facet 45 from the core is greater than the distance di of the first facet 60 from the core, as can be seen in Figure 4.
• the second facet 45 is farther away from the core than the first facet 60.
• the facets 45 have a width / which decreases in the direction of the distal end 40b of the portion 43 of the core carrying the bristles.
• the first facet 60 and the two second facets 45 are delimited in part by an edge
• the cross section of the brush has a substantially triangular shape at the proximal end 40a of the brush.
• 60 or second facet 45 respectively extends about the axis X over an angular extent ⁇ and j2 of less than 120°.
• the envelope surface S has at least one cross section with a circular shape. In the example described, this circular cross section is situated close to the distal end 40b.
• the envelope surface S has, before the core is curved, a partially frustoconical overall shape, as can be seen in Figures 5 and 6, in which the blank of the brush from Figure 2 has been illustrated. More specifically, the envelope surface comprises a distal frustoconical portion 51 having a cross section that decreases towards the free end of the core, a proximal frustoconical portion 53 having a cross section that decreases towards the proximal end of the core, and a cylindrical central portion 52 situated between the distal frustoconical portion 51 and proximal frustoconical portion 53.
• the angle ⁇ of the cone of the distal frustoconical portion 51 with respect to the longitudinal axis X may have a value of around 15°.
• the maximum radius R of the envelope surface S corresponding to the radius of the smallest cylinder of revolution in which the brush is inscribed, is between 3 mm and 6 mm, for example 4.5 mm.
• the brush 10 has an overall shape, apart from the facets 45 and 60, with a convex profile. It can be seen that the blank of this brush, before the formation of the facets and before the core is curved, which is illustrated in Figures 11 and 12, has a partially ogival shape.
• This variant embodiment illustrated in Figures 7 to 12 also differs from the above by the presence of two third facets 65 situated in continuation of the facets 45, the length of which is -L3 and the width of which increases towards the distal end 40b of the brush.
• the facet 60 is situated in this example at 45° to the facets 45 and 65 with respect to the longitudinal axis X.
• the envelope surface can comprise a different number of facets and it is possible for the latter not to be identical to one another and/or distributed evenly around the core 40.
• the ends 40a and 40b of the envelope surface S can be chamfered. This can make it easier for the brush 3 to pass through the wiping member 20.
• the chamfer at the distal end and the chamfer at the proximal end can be different.
• the chamfer at the distal end can, notably, be less inclined than that at the proximal end. In a variant, it is possible for the brush not to have such chamfers at the end.

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Applications Claiming Priority (2)

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ID=54366400

Family Applications (1)

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• 2015
  • 2015-09-08 FR FR1558314A patent/FR3040605B1/fr active Active
• 2016
  • 2016-09-02 JP JP2018530959A patent/JP2018526178A/ja active Pending
  • 2016-09-02 EP EP16759805.1A patent/EP3346869A1/de not_active Withdrawn
  • 2016-09-02 WO PCT/EP2016/070755 patent/WO2017042103A1/en active Application Filing
  • 2016-09-02 CN CN201680052214.0A patent/CN108024615A/zh active Pending
  • 2016-09-02 KR KR1020187006678A patent/KR20180039125A/ko not_active Application Discontinuation
  • 2016-09-02 US US15/757,800 patent/US20190246771A1/en not_active Abandoned

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