EP0509852B1 - Mascara brush - Google Patents

Mascara brush Download PDF

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Publication number
EP0509852B1
EP0509852B1 EP92400315A EP92400315A EP0509852B1 EP 0509852 B1 EP0509852 B1 EP 0509852B1 EP 92400315 A EP92400315 A EP 92400315A EP 92400315 A EP92400315 A EP 92400315A EP 0509852 B1 EP0509852 B1 EP 0509852B1
Authority
EP
European Patent Office
Prior art keywords
bristles
brush
soft material
brush according
diameter
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.)
Expired - Lifetime
Application number
EP92400315A
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German (de)
French (fr)
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EP0509852A1 (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
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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0238—Bristles with non-round cross-section
    • 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
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • 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 invention relates to a brush for applying a makeup product, in particular for applying mascara to eyelashes or a dye on hair, such as include a multitude of hairs trapped in the turns of at least two branches of metallic wire twisted in a helix which form the core of the brush, the bristles being arranged substantially radially.
  • a brush of this type is described, inter alia, in EP-A-0 329 505.
  • the bristles used for such brushes should be chosen from so that the brush is not too aggressive for the eye sensitive. But it is also necessary that the brush is able to deposit enough makeup product, especially on the lashes.
  • the material used for the bristles of the brushes genre defined above is generally constituted by a polyamide. If you want to get a soft, non-aggressive brush for the sensitive eye, we are led to use bristles of diameter reduced, for example by 6 hundredths of a millimeter so that the hairs have great flexibility. But by operating in this way we make appear the drawback that, on the one hand, such a hair of reduced diameter takes the form of a large coil all along the brush and, on the other apart, deposits very little product on the eyelashes. The gap between each strand, of reduced diameter, is small and the makeup obtained with such a brush is very natural whereas, in most cases, one is looking for specific makeup.
  • the object of the invention is, above all, to provide a brush which does not has more, or to a lesser degree, the drawbacks mentioned above.
  • the object of the invention is, in particular, to provide a brush to the less as soft as that obtained with polyamide bristles of a diameter of 6 hundredths of a millimeter and which makes it possible to make up strongly the eyelashes while having a very soft and non-aggressive contact on the eye, and while ensuring a very thorough separation of the eyelashes.
  • a brush for applying a product of makeup of the kind defined above is characterized by the fact that it includes bristles made of a soft material of hardness between 20 shores A and 40 shores D, and that the diameter of these hairs is greater than 6 hundredths of a millimeter to avoid excessive great flexibility.
  • all the bristles of the brush are made of a soft material of hardness between 20 shores A and 40 shores D, with a diameter greater than 6 hundredths of a millimeter to avoid too much flexibility.
  • the bristles of soft material are mixed with other bristles made of different materials, in particular polyamide or polyester, having substantially the same stiffness than soft material bristles.
  • the proportion, in number, of soft material hairs is at least 40% of the total number brush bristles.
  • the brush will have 50% bristles of soft elastomeric material, with circular section, with a diameter of 30 hundredths of a millimeter, and 50% cross-section polyamide bristles circular with a diameter of 8 hundredths or 10 hundredths of millimeter.
  • the load gap is more regular; because of the diameter important of soft hairs, the number of hairs per turn of the soul is reduced, so that the gap between hairs is larger, which allows to obtain more load at the level of each hair.
  • the brush preferably comprises from 8 to 40 bristles per turn.
  • the soft bristles are advantageously made of elastomeric material or thermoplastic.
  • the diameter of the soft bristles is preferably between 10 and 35 hundredths of a millimeter.
  • the metal wire constituting the branches of the core is a soft wire allowing a slight elongation, so as to avoid shearing the hairs during twisting.
  • the diameter of the wire can be between 0.4 and 0.9 mm.
  • the hairs are preferably full; their section can be square, rectangular flat, triangular or cylindrical.
  • Cylindrical bristles may be hollow.
  • the bristles may have at least one groove capillary.
  • the invention consists, apart from the arrangements set out above, in a number of other provisions which it will be more explicitly question below about an embodiment particular described with reference to the attached drawing, but which is not in no way limitative.
  • Figure 1 of this drawing shows schematically, in elevation, a brush according to the invention, with parts torn off.
  • Figure 2 shows a summary of a hardness test means of the brush.
  • Figures 3 a to 3 e show , on a large scale, various possible sections for the bristles.
  • the brush includes a multitude of bristles 2 stuck in the turns of two branches 3, 4 of metallic wire twisted in a helix which form the core 5 of the brush.
  • the core 5 is integral with a rod 6 provided, at its end remote from the bristles 2, a cap 7 for the brush handling.
  • the bristles 2 are arranged substantially radially and are wedged, between the turns, approximately at their median part. In alternatively, the bristles can be offset relative to the core 5.
  • the bristles 2 are made of a soft material of hardness included between 20 shores A and 40 shores D.
  • the material of the bristles is advantageously an elastomeric or thermoplastic material.
  • the diameter of the hairs is sufficient to prevent them from becoming too great flexibility.
  • This diameter is advantageously between 10 and 35 hundredths of a millimeter and preferably between 15 and 30 hundredths of millimeter.
  • the bristles 2 are of solid section, in particular of square shape (FIG. 3 a ), flat rectangular (FIG. 3 b ), triangular (FIG. 3 c ), circular (FIG. 3 d ), or with hollow circular section.
  • the bristles can be used alone or as a mixture.
  • the bristles may have at least one capillary groove (Figure 3 e ).
  • the metal wire constituting the branches 3, 4 of the core is a soft wire allowing a slight elongation, so as to reduce the risk of shearing the bristles 2 when torsion.
  • the diameter of the wire constituting the branches 3, 4 is advantageously between 0.4 and 0.9 mm.
  • the bristles 2 are made of a soft material, and have a relatively large diameter, when the branches 3, 4 are twisted with a minimum torque so as to wedge the bristles, the latter, due to the deformation of their diameter, take on a "clutter" appearance, that is to say that two immediately neighboring hairs will tilt in a different way. With sufficient twist, a generally homogeneous tuft is obtained in which the ends 2 has bristles which are substantially equidistant from each other and regularly distributed throughout the brush. We thus lose the twist effect of the twisted core. The load interstices between the bristles 2 are more evenly distributed throughout the volume occupied by the brush.
  • the bristles of soft material preferably of elastomeric material, allow to obtain a bi-oriented deformation either in compression, either in stretching.
  • the brush does not includes only about eight to forty hairs per turn, so that interstices between hairs are larger than in the case of hairs smaller diameter more numerous per turn. Each hair will take care more in product.
  • the bristles 2 When the brush is wrung, through a wringer (in the form of crown) of reduced internal diameter, the bristles 2, made of soft material, lie down and are therefore less wrung out.
  • the "rake" formed by the bristles of the brush although it is less effective for spread the product on the eyelashes only in the case of a bristle brush more hard, compensates for this negative effect of the fact that the charge in product is stronger.
  • the brush allows effective makeup with the advantage of a great softness and a reduction of the danger for the eye since the hairs are soft.
  • Such a brush can be used for a second make-up on an already made-up eye without breaking the deposit of the first make-up, which is interesting for depositing, for for example, on make-up a shiny product.
  • Brushes made with different types of bristles, and having identical or similar shapes and sizes have been drawn to through a ring B kept fixed, shown in Figure 2, the diameter of the opening was less than the outside diameter of the brush. The tensile force to be exerted on the brush, to cause its passage through the ring, was measured.
  • the tensile force for the passage through the ring B was more important and corresponded to a value equal to 0.32 newton.
  • the pulling force required to pass the brush through ring B corresponded to a value equal to 0.48 newton, that is to say eight times greater than that required for a brush made with bristles made of soft material and having a diameter twice as large.
  • all of the brush bristles are soft bristles.
  • the brush may have mixed soft bristles with other bristles made of different materials, for example polyamide or polyester, and having substantially the same rigidity (and therefore substantially the same flexibility) as soft bristles.
  • the proportion, in number, of bristles made of soft material is at least 40% of the total number of brush bristles.
  • the brush may contain 50% bristles of elastomeric material, with cross-section circular, with a diameter of 30 hundredths of a millimeter, and 50% of polyamide bristles with circular section with a diameter of 8 hundredths or of 10 hundredths of a millimeter.
  • a brush according to the invention has many advantages.
  • the softness of a brush according to the invention makes it possible no longer feel the hardness of the spin.

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  • Brushes (AREA)

Description

L'invention est relative à une brosse pour l'application d'un produit de maquillage, en particulier pour l'application de mascara sur les cils ou d'une teinture sur les cheveux, du genre de celles qui comprennent une multitude de poils coincés dans les spires d'au moins deux branches de fil métallique torsadées en hélice qui forment l'âme de la brosse, les poils étant disposés sensiblement radialement. Une brosse de ce type est décrite, entre autres, dans EP-A-0 329 505. The invention relates to a brush for applying a makeup product, in particular for applying mascara to eyelashes or a dye on hair, such as include a multitude of hairs trapped in the turns of at least two branches of metallic wire twisted in a helix which form the core of the brush, the bristles being arranged substantially radially. A brush of this type is described, inter alia, in EP-A-0 329 505.

Les poils utilisés pour de telles brosses doivent être choisis de telle manière que la brosse ne soit pas trop agressive pour l'oeil sensible. Mais il faut, aussi, que la brosse soit apte à déposer suffisamment de produit de maquillage, notamment sur les cils. The bristles used for such brushes should be chosen from so that the brush is not too aggressive for the eye sensitive. But it is also necessary that the brush is able to deposit enough makeup product, especially on the lashes.

Actuellement, la matière utilisée pour les poils des brosses du genre défini précédemment est généralement constituée par un polyamide. Si l'on souhaite obtenir une brosse "molle", non agressive pour l'oeil sensible, on est conduit à utiliser des poils de diamètre réduit, par exemple de 6 centièmes de millimètre de sorte que les poils présentent une grande flexibilité. Mais en opérant de la sorte on fait apparaítre l'inconvénient que, d'une part, un tel poil de diamètre réduit se met sous forme de spire large tout au long de la brosse et, d'autre part, dépose très peu de produit sur les cils. L'interstice situé entre chaque brin, de diamètre réduit, est faible et le maquillage obtenu avec une telle brosse est très naturel alors que, dans la plupart des cas, on cherche à obtenir un maquillage spécifique. Currently, the material used for the bristles of the brushes genre defined above is generally constituted by a polyamide. If you want to get a soft, non-aggressive brush for the sensitive eye, we are led to use bristles of diameter reduced, for example by 6 hundredths of a millimeter so that the hairs have great flexibility. But by operating in this way we make appear the drawback that, on the one hand, such a hair of reduced diameter takes the form of a large coil all along the brush and, on the other apart, deposits very little product on the eyelashes. The gap between each strand, of reduced diameter, is small and the makeup obtained with such a brush is very natural whereas, in most cases, one is looking for specific makeup.

L'invention a pour but, surtout, de fournir une brosse qui ne présente plus, ou à un degré moindre, les inconvénients rappelés ci-dessus. L'invention a pour but, en particulier, de fournir une brosse au moins aussi douce que celle obtenue avec des poils en polyamide d'un diamètre de 6 centièmes de millimètre et qui permette de maquiller fortement les cils tout en ayant un contact très doux et non agressif sur l'oeil, et tout en assurant une séparation des cils très poussée. The object of the invention is, above all, to provide a brush which does not has more, or to a lesser degree, the drawbacks mentioned above. The object of the invention is, in particular, to provide a brush to the less as soft as that obtained with polyamide bristles of a diameter of 6 hundredths of a millimeter and which makes it possible to make up strongly the eyelashes while having a very soft and non-aggressive contact on the eye, and while ensuring a very thorough separation of the eyelashes.

Selon l'invention, une brosse pour l'application d'un produit de maquillage du genre défini précédemment est caractérisée par le fait qu'elle comprend des poils réalisés en une matière molle de dureté comprise entre 20 shores A et 40 shores D, et que le diamètre de ces poils est supérieur à 6 centièmes de millimètre pour leur éviter une trop grande flexibilité. According to the invention, a brush for applying a product of makeup of the kind defined above is characterized by the fact that it includes bristles made of a soft material of hardness between 20 shores A and 40 shores D, and that the diameter of these hairs is greater than 6 hundredths of a millimeter to avoid excessive great flexibility.  

Selon une première possibilité, tous les poils de la brosse sont réalisés en une matière molle de dureté comprise entre 20 shores A et 40 shores D, avec un diamètre supérieur à 6 centièmes de millimètre pour éviter une trop grande flexibilité. According to a first possibility, all the bristles of the brush are made of a soft material of hardness between 20 shores A and   40 shores D, with a diameter greater than 6 hundredths of a millimeter to avoid too much flexibility.

Selon une autre possibilité, les poils en matière molle sont mélangés avec d'autres poils réalisés dans des matières différentes, en particulier polyamide ou polyester, en présentant sensiblement la même rigidité que les poils en matière molle. De préférence, la proportion, en nombre, de poils en matière molle est d'au moins 40 % du nombre total de poils de la brosse. Par exemple, la brosse comportera 50 % de poils en matière molle élastomère, à section circulaire, d'un diamètre de 30 centièmes de millimètre, et 50 % de poils en polyamide à section circulaire d'un diamètre de 8 centièmes ou de 10 centièmes de millimètre. Alternatively, the bristles of soft material are mixed with other bristles made of different materials, in particular polyamide or polyester, having substantially the same stiffness than soft material bristles. Preferably, the proportion, in number, of soft material hairs is at least 40% of the total number brush bristles. For example, the brush will have 50% bristles of soft elastomeric material, with circular section, with a diameter of 30 hundredths of a millimeter, and 50% cross-section polyamide bristles circular with a diameter of 8 hundredths or 10 hundredths of millimeter.

Dans la pratique, l'utilisation de poils mous pour les brosses était écartée, car il était admis qu'en raison de leur grande flexibilité de tels poils mous ne permettaient pas d'étaler correctement le produit. L'invention a vaincu ce préjugé et grâce à des diamètres de poils mous plus importants que ceux des poils classiques en polyamide, on a pu établir que les brosses ainsi réalisées permettaient d'obtenir un maquillage à la charge désirée, tout en présentant une plus grande douceur que les brosses classiques avec des poils en polyamide. In practice, the use of soft bristles for brushes was discarded because it was accepted that due to their great flexibility such soft bristles did not allow the product to be spread properly. The invention has overcome this prejudice and thanks to the diameters of soft bristles larger than conventional polyamide bristles, we were able to establish that the brushes thus produced made it possible to obtain a makeup at the desired charge, while presenting greater softer than conventional brushes with polyamide bristles.

De plus, d'une manière surprenante et avantageuse, lorsque la brosse est torsadée avec un couple minimum, avec les poils mous de gros diamètre de l'invention, on obtient un aspect de poils en "fouillis" du fait de la déformation de leur diamètre lorsqu'ils sont légèrement torsadés. L'effet de spire au niveau des extrémités des poils mous disparaít et la mise en touffe est plus homogène qu'avec des poils en polyamide. In addition, surprisingly and advantageously, when the brush is twisted with minimum torque, with the soft bristles of large diameter of the invention, one obtains an appearance of hairs in "clutter" due to the deformation of their diameter when they are slightly twisted. The spiral effect at the ends of the soft hairs disappears and the tuft is more homogeneous than with bristles polyamide.

L'interstice de charge est plus régulier ; en raison du diamètre important des poils mous, le nombre de poils par spire de l'âme est réduit, de sorte que l'interstice entre poils est plus grand, ce qui permet d'obtenir plus de charge au niveau de chaque poil. The load gap is more regular; because of the diameter important of soft hairs, the number of hairs per turn of the soul is reduced, so that the gap between hairs is larger, which allows to obtain more load at the level of each hair.

La brosse comprend, de préférence, de 8 à 40 poils à la spire. The brush preferably comprises from 8 to 40 bristles per turn.

Les poils mous sont avantageusement en matière élastomère ou thermoplastique. The soft bristles are advantageously made of elastomeric material or thermoplastic.

La matière est choisie, de préférence, parmi l'ensemble des matières suivantes : silicone, EVA = copolymère éthylène/vinyl acétate, polyéther blocamide, élastomère de polyester, EPDM = terpolymère éthylène/propylène/diènes, polyuréthane, SBS = styrène butadiène séquencé, latex, caoutchouc nitrile-butadiène. The material is preferably chosen from among all of the following materials: silicone, EVA = ethylene / vinyl copolymer acetate, polyether blocamide, polyester elastomer, EPDM = ethylene / propylene / dienes terpolymer, polyurethane, SBS = styrene block butadiene, latex, nitrile-butadiene rubber.  

Le diamètre des poils mous est de préférence compris entre 10 et 35 centièmes de millimètre. The diameter of the soft bristles is preferably between 10 and 35 hundredths of a millimeter.

Avantageusement, le fil métallique constituant les branches de l'âme est un fil de fer mou permettant un léger allongement, de manière à éviter de cisailler les poils lors de la torsion. Le diamètre du fil de fer peut être compris entre 0,4 et 0,9 mm. Advantageously, the metal wire constituting the branches of the core is a soft wire allowing a slight elongation, so as to avoid shearing the hairs during twisting. The diameter of the wire can be between 0.4 and 0.9 mm.

Les poils sont pleins de préférence ; leur section peut être carrée, rectangulaire plate, triangulaire ou cylindrique. Les poils cylindriques peuvent être creux. Les poils peuvent comporter au moins une rainure capillaire. The hairs are preferably full; their section can be square, rectangular flat, triangular or cylindrical. Cylindrical bristles may be hollow. The bristles may have at least one groove capillary.

L'invention consiste, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'un mode de réalisation particulier décrit avec référence au dessin ci-annexé, mais qui n'est nullement limitatif. The invention consists, apart from the arrangements set out above, in a number of other provisions which it will be more explicitly question below about an embodiment particular described with reference to the attached drawing, but which is not in no way limitative.

La figure 1 de ce dessin représente schématiquement, en élévation, une brosse conforme à l'invention, avec parties arrachées. Figure 1 of this drawing shows schematically, in elevation, a brush according to the invention, with parts torn off.

La figure 2 représente sommairement un moyen de test de dureté de la brosse. Figure 2 shows a summary of a hardness test means of the brush.

Les figures 3a à 3e représentent, à grande échelle, diverses sections possibles pour les poils. Figures 3 a to 3 e show , on a large scale, various possible sections for the bristles.

En se reportant à la figure 1 du dessin, on peut voir une brosse 1 pour l'application d'un produit de maquillage de consistance liquide à pâteuse, en particulier de mascara. Referring to Figure 1 of the drawing, we can see a brush 1 for the application of a make-up product of liquid consistency to pasty, especially mascara.

La brosse comprend une multitude de poils 2 coincés dans les spires de deux branches 3, 4 de fil métallique torsadées en hélice qui forment l'âme 5 de la brosse. L'âme 5 est solidaire d'une tige 6 munie, à son extrémité éloignée des poils 2, d'un capuchon 7 pour la manipulation de la brosse. The brush includes a multitude of bristles 2 stuck in the turns of two branches 3, 4 of metallic wire twisted in a helix which form the core 5 of the brush. The core 5 is integral with a rod 6 provided, at its end remote from the bristles 2, a cap 7 for the brush handling.

Les poils 2 sont disposés sensiblement radialement et sont coincés, entre les spires, environ au niveau de leur partie médiane. En variante, les poils peuvent être excentrés relativement à l'âme 5. The bristles 2 are arranged substantially radially and are wedged, between the turns, approximately at their median part. In alternatively, the bristles can be offset relative to the core 5.

Les poils 2 sont réalisés en une matière molle de dureté comprise entre 20 shores A et 40 shores D. La matière des poils est avantageusement une matière élastomère ou thermoplastique. The bristles 2 are made of a soft material of hardness included between 20 shores A and 40 shores D. The material of the bristles is advantageously an elastomeric or thermoplastic material.

La matière retenue pour les poils 2 est avantageusement choisie parmi l'ensemble des matières suivantes : silicone, EVA = copolymère éthylène/vinyl acétate, polyéther blocamide, élastomère de polyester, EPDM = terpolymère éthylène/propylène/diènes, polyuréthane, SBS = styrène butadiène séquencé, latex, caoutchouc nitrile-butadiène. The material retained for the bristles 2 is advantageously chosen among all of the following materials: silicone, EVA = copolymer ethylene / vinyl acetate, polyether blocamide, polyester elastomer,   EPDM = ethylene / propylene / dienes terpolymer, polyurethane, SBS = block butadiene styrene, latex, nitrile-butadiene rubber.

Le diamètre des poils est suffisant pour leur éviter une trop grande flexibilité. Ce diamètre est avantageusement compris entre 10 et 35 centièmes de millimètre et de préférence entre 15 et 30 centièmes de millimètre. The diameter of the hairs is sufficient to prevent them from becoming too great flexibility. This diameter is advantageously between 10 and 35 hundredths of a millimeter and preferably between 15 and 30 hundredths of millimeter.

Les poils 2 sont à section pleine, en particulier de forme carrée (figure 3a), rectangulaire plate (figure 3b), triangulaire (figure 3c), circulaire (figure 3d), ou à section circulaire creuse. Les poils peuvent être utilisés seuls ou en mélange. The bristles 2 are of solid section, in particular of square shape (FIG. 3 a ), flat rectangular (FIG. 3 b ), triangular (FIG. 3 c ), circular (FIG. 3 d ), or with hollow circular section. The bristles can be used alone or as a mixture.

Les poils peuvent comporter au moins une rainure capillaire (figure 3e). The bristles may have at least one capillary groove (Figure 3 e ).

Avantageusement, le fil métallique constituant les branches 3, 4 de l'âme est un fil de fer mou permettant un léger allongement, de manière à réduire les risques de cisaillement des poils 2 lors de la torsion. Le diamètre du fil de fer constituant les branches 3, 4 est avantageusement compris entre 0,4 et 0,9 mm. Advantageously, the metal wire constituting the branches 3, 4 of the core is a soft wire allowing a slight elongation, so as to reduce the risk of shearing the bristles 2 when torsion. The diameter of the wire constituting the branches 3, 4 is advantageously between 0.4 and 0.9 mm.

Comme exemple de fil métallique avantageux pour constituer l'âme de la brosse on peut donner celui du fil type Monel en alliage inox mou. As an example of an advantageous metal wire to constitute the brush core we can give that of the Monel type wire in alloy soft stainless steel.

Du fait que les poils 2 sont en une matière molle, et ont un diamètre relativement important, lorsque les branches 3, 4 sont torsadées avec un couple minimum de manière à coincer les poils, ces derniers, en raison de la déformation de leur diamètre, prennent un aspect en "fouillis", c'est-à-dire que deux poils immédiatement voisins vont s'incliner d'une manière différente. Avec une torsion suffisante, on obtient une touffe globalement homogène dans laquelle les extrémités 2a des poils sont sensiblement équidistantes les unes des autres et régulièrement réparties tout au long de la brosse. On perd ainsi l'effet de spire de l'âme torsadée. Les interstices de charge entre les poils 2 sont plus régulièrement répartis dans l'ensemble du volume occupé par la brosse. Because the bristles 2 are made of a soft material, and have a relatively large diameter, when the branches 3, 4 are twisted with a minimum torque so as to wedge the bristles, the latter, due to the deformation of their diameter, take on a "clutter" appearance, that is to say that two immediately neighboring hairs will tilt in a different way. With sufficient twist, a generally homogeneous tuft is obtained in which the ends 2 has bristles which are substantially equidistant from each other and regularly distributed throughout the brush. We thus lose the twist effect of the twisted core. The load interstices between the bristles 2 are more evenly distributed throughout the volume occupied by the brush.

Les poils en matière molle, de préférence en matière élastomère, permettent d'obtenir une déformation bi-orientée soit en compression, soit en étirement. The bristles of soft material, preferably of elastomeric material, allow to obtain a bi-oriented deformation either in compression, either in stretching.

Lorsque l'on utilise des poils comprenant au moins une rainure ou sillon capillaire, le phénomène de la dispersion relativement régulière des extrémités des poils tout au long de la brosse peut encore s'accentuer. When using bristles comprising at least one groove or capillary groove, the phenomenon of relatively dispersed regular bristle ends throughout the brush can still accentuate.  

Du fait du diamètre relativement important des poils, la brosse ne comprend que huit à quarante poils environ par spire, de sorte que les interstices entre poils sont plus importants que dans le cas de poils de plus faible diamètre plus nombreux par spire. Chaque poil se chargera davantage en produit. Due to the relatively large diameter of the bristles, the brush does not includes only about eight to forty hairs per turn, so that interstices between hairs are larger than in the case of hairs smaller diameter more numerous per turn. Each hair will take care more in product.

A l'essorage de la brosse, au travers d'un essoreur (en forme de couronne) de diamètre intérieur réduit, les poils 2, en matière molle, se couchent et sont donc moins essorés. Au maquillage, le "rateau" constitué par les poils de la brosse, bien qu'il soit moins efficace pour étaler le produit sur les cils que dans le cas d'une brosse à poils plus durs, permet de compenser cet effet négatif du fait que la charge en produit est plus forte. When the brush is wrung, through a wringer (in the form of crown) of reduced internal diameter, the bristles 2, made of soft material, lie down and are therefore less wrung out. In makeup, the "rake" formed by the bristles of the brush, although it is less effective for spread the product on the eyelashes only in the case of a bristle brush more hard, compensates for this negative effect of the fact that the charge in product is stronger.

Il en résulte que la brosse permet un maquillage efficace avec l'avantage d'une grande douceur et d'une diminution du danger pour l'oeil puisque les poils sont mous. Une telle brosse peut être utilisée pour un deuxième maquillage sur un oeil déjà maquillé sans casser le dépôt du premier maquillage, ce qui est intéressant pour déposer, par exemple, sur un maquillage un produit brillant. As a result, the brush allows effective makeup with the advantage of a great softness and a reduction of the danger for the eye since the hairs are soft. Such a brush can be used for a second make-up on an already made-up eye without breaking the deposit of the first make-up, which is interesting for depositing, for for example, on make-up a shiny product.

L'utilisation d'une telle brosse est relativement indépendante de la fluidité du produit à distribuer. The use of such a brush is relatively independent of the fluidity of the product to be distributed.

Le choix du nombre des poils, du diamètre des poils, de leur section et de leur répartition avant torsion, le choix du diamètre du fil de fer constituant les branches de l'âme, et du couple de torsion appliqué à ces branches pour réaliser la brosse permettra d'obtenir des brosses d'une douceur inégalée dont le glissant assurera des maquillages du moins chargé au plus chargé. The choice of the number of hairs, the diameter of the hairs, their section and their distribution before twisting, the choice of wire diameter of iron constituting the branches of the core, and of the torque applied to these branches to make the brush will allow to obtain brushes of unequaled softness whose sliding will ensure make-up from the least loaded to the most loaded.

Pour mettre en évidence la souplesse des poils des brosses conformes à l'invention, relativement à des brosses classiques avec des poils en polyamide, les essais suivants ont été effectués. To highlight the flexibility of the bristles of the brushes according to the invention, relative to conventional brushes with polyamide bristles, the following tests were carried out.

Des brosses réalisées avec les différents types de poils, et ayant des formes et des dimensions identiques ou semblables, ont été tirées à travers un anneau B maintenu fixe, représenté sur la figure 2, dont le diamètre de l'ouverture était inférieur au diamètre extérieur de la brosse. L'effort de traction à exercer sur la brosse, pour provoquer son passage à travers l'anneau, a été mesuré. Brushes made with different types of bristles, and having identical or similar shapes and sizes have been drawn to through a ring B kept fixed, shown in Figure 2, the diameter of the opening was less than the outside diameter of the brush. The tensile force to be exerted on the brush, to cause its passage through the ring, was measured.

Une brosse constituée avec des poils en matière élastomère, ayant un diamètre de 20 centièmes de millimètre, a nécessité un effort de traction, à travers l'anneau B, caractérisé par une valeur égale à 0,06 newton. A brush made up of bristles made of elastomeric material, having a diameter of 20 hundredths of a millimeter, required an effort tension, through ring B, characterized by a value equal to 0.06 newton.  

Pour la même forme de brosse, avec des poils en polyamide, ayant un diamètre de 8 centièmes de millimètre, la force de traction pour le passage à travers l'anneau B était plus importante et correspondait à une valeur égale à 0,32 newton. For the same brush shape, with polyamide bristles, having a diameter of 8 hundredths of a millimeter, the tensile force for the passage through the ring B was more important and corresponded to a value equal to 0.32 newton.

Enfin, pour une brosse de même forme mais réalisée avec des poils en polyamide, d'un diamètre de 10 centièmes de millimètre, la force de traction nécessaire pour faire passer la brosse à travers l'anneau B correspondait à une valeur égale à 0,48 newton, c'est-à-dire huit fois supérieure à celle nécessaire pour une brosse réalisée avec des poils en matière molle et ayant un diamètre deux fois plus important. Finally, for a brush of the same shape but made with polyamide bristles, with a diameter of 10 hundredths of a millimeter, the pulling force required to pass the brush through ring B corresponded to a value equal to 0.48 newton, that is to say eight times greater than that required for a brush made with bristles made of soft material and having a diameter twice as large.

Dans l'exemple de réalisation décrit jusqu'à présent, tous les poils de la brosse sont des poils mous. In the embodiment described so far, all of the brush bristles are soft bristles.

En variante, la brosse peut comporter des poils mous mélangés avec d'autres poils réalisés dans des matières différentes, par exemple polyamide ou polyester, et présentant sensiblement la même rigidité (et donc sensiblement la même flexibilité) que les poils mous. De préférence, la proportion, en nombre, de poils en matière molle est d'au moins 40 % du nombre total de poils de la brosse. Par exemple, la brosse peut comporter 50 % de poils en matière élastomère, à section circulaire, d'un diamètre de 30 centièmes de millimètre, et 50 % de poils en polyamide à section circulaire d'un diamètre de 8 centièmes ou de 10 centièmes de millimètre. Alternatively, the brush may have mixed soft bristles with other bristles made of different materials, for example polyamide or polyester, and having substantially the same rigidity (and therefore substantially the same flexibility) as soft bristles. Of preferably, the proportion, in number, of bristles made of soft material is at least 40% of the total number of brush bristles. For example, the brush may contain 50% bristles of elastomeric material, with cross-section circular, with a diameter of 30 hundredths of a millimeter, and 50% of polyamide bristles with circular section with a diameter of 8 hundredths or of 10 hundredths of a millimeter.

Une brosse conforme à l'invention présente de nombreux avantages. A brush according to the invention has many advantages.

Elle n'est pas agressive, en particulier pour les yeux sensibles. It is not aggressive, especially for sensitive eyes.

Elle permet de moins essorer le produit si l'on utilise des formules liquides. It allows less drying of the product if using liquid formulas.

Elle permet de ne pas retirer un produit de maquillage déjà en place sur les cils, si l'on applique, au cours d'un deuxième maquillage, un conditionneur. It allows not to remove a makeup product already in place on the eyelashes, if you apply, during a second make-up, a conditioner.

Elle présente une répartition très homogène des extrémités 2a des poils tout au long de la brosse. It has a very homogeneous distribution of the ends 2 has bristles all along the brush.

Elle permet de déposer des formules épaisses sans intervenir dans l'étalement sur les cils. It allows to deposit thick formulas without intervening in the spread on the eyelashes.

On peut utiliser, pour une telle brosse, une âme centrale ou excentrée. On peut également utiliser des brosses en forme par exemple de section triangulaire, hexagonale etc... L'extrémité des poils peut être traitée par meulage. One can use, for such a brush, a central core or off-center. You can also use shaped brushes for example triangular, hexagonal, etc., the ends of the bristles can be treated by grinding.  

La douceur d'une brosse selon l'invention permet de ne plus sentir la dureté de l'essorage. The softness of a brush according to the invention makes it possible no longer feel the hardness of the spin.

Claims (12)

  1. Brush for applying make-up, in particular for applying mascara to the eyelashes or dye to the hair, comprising a multitude of bristles (2) wedged in spires of at least two branches (3, 4) of wire twisted into a helix which form the core of the brush, the bristles being arranged substantially radially and having a diameter greater than 6 hundredths of a millimetre so as to avoid them being too flexible, characterized in that it comprises bristles (2) produced from a soft material having a hardness of between 20 Shore A and 40 Shore D.
  2. Brush according to Claim 1, characterized in that all the bristles (2) are produced from the said soft material and with the said diameter.
  3. Brush according to Claim 1, characterized in that the bristles (2) produced from the said soft material and with the said diameter are mixed with other bristles produced in different materials, in particular polyamide or polyester, and having substantially the same stiffness as the bristles made of soft material.
  4. Brush according to Claim 3, characterized in that the proportion, in numerical terms, of bristles made of soft material is at least 40% of the total number of bristles in the brush.
  5. Brush according to one of the preceding claims, characterized in that the bristles (2) made of soft material are made of elastomeric or thermoplastic material.
  6. Brush according to Claim 5, characterized in that the bristles (2) made of soft material are made of a material chosen from all of the following materials: silicon, EVA = ethylene/vinyl acetate copolymer, block polyetheramide, polyester elastomer, EPDM = ethylene/propylene/dienes terpolymer, polyurethane, SBS = block styrene-butadiene, latex, nitrile-butadiene rubber.
  7. Brush according to any one of the preceding claims, characterized in that the diameter of the bristles made of soft material is between 10 and 35 hundredths of a millimetre.
  8. Brush according to any one of the preceding claims, characterized in that the bristles made of soft material have a solid, square, flat rectangular, triangular or circular section or have a hollow circular section.
  9. Brush according to any one of the preceding claims, characterized in that the bristles made of soft material comprise at least one capillary groove.
  10. Brush according to any one of the preceding claims, characterized in that the wire, constituting the branches (3, 4) of the core (5), is a soft iron wire, allowing a slight extension, so as to avoid shearing the bristles during the twisting.
  11. Brush according to any one of the preceding claims, characterized in that the diameter of the iron wire constituting the branches (3, 4) of the core is between 0.4 mm and 0.9 mm.
  12. Brush according to any one of the preceding claims, characterized in that it comprises from 8 to 40 bristles per spire.
EP92400315A 1991-04-16 1992-02-07 Mascara brush Expired - Lifetime EP0509852B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9104619 1991-04-16
FR9104619A FR2675355B1 (en) 1991-04-16 1991-04-16 BRUSH FOR THE APPLICATION OF A MAKEUP PRODUCT.

Publications (2)

Publication Number Publication Date
EP0509852A1 EP0509852A1 (en) 1992-10-21
EP0509852B1 true EP0509852B1 (en) 1998-05-06

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Family Applications (1)

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EP92400315A Expired - Lifetime EP0509852B1 (en) 1991-04-16 1992-02-07 Mascara brush

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US (1) US5238011A (en)
EP (1) EP0509852B1 (en)
JP (1) JPH05123217A (en)
CA (1) CA2064418C (en)
DE (1) DE69225350T2 (en)
ES (1) ES2115651T3 (en)
FR (1) FR2675355B1 (en)

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Also Published As

Publication number Publication date
CA2064418C (en) 2002-08-27
DE69225350T2 (en) 1999-01-28
FR2675355A1 (en) 1992-10-23
DE69225350D1 (en) 1998-06-10
ES2115651T3 (en) 1998-07-01
JPH05123217A (en) 1993-05-21
FR2675355B1 (en) 1993-08-13
US5238011A (en) 1993-08-24
CA2064418A1 (en) 1992-10-17
EP0509852A1 (en) 1992-10-21

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