EP3745910B1 - Brosse cosmétique et de soins de santé améliorée - Google Patents

Brosse cosmétique et de soins de santé améliorée Download PDF

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Publication number
EP3745910B1
EP3745910B1 EP19702264.3A EP19702264A EP3745910B1 EP 3745910 B1 EP3745910 B1 EP 3745910B1 EP 19702264 A EP19702264 A EP 19702264A EP 3745910 B1 EP3745910 B1 EP 3745910B1
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EP
European Patent Office
Prior art keywords
bristle
cosmetic
healthcare
brush
section
Prior art date
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Active
Application number
EP19702264.3A
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German (de)
English (en)
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EP3745910A1 (fr
Inventor
Wolfgang KAMM
Huong BISTER
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Geka GmbH
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Geka GmbH
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Publication of EP3745910A1 publication Critical patent/EP3745910A1/fr
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Classifications

    • 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
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/18—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed on or between belts or wires
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • 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
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0292—Bristles having split ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • A46B2200/1053—Cosmetics applicator specifically for mascara
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • 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
    • A46B2200/106—Cosmetics applicator specifically for mascara including comb like element

Definitions

  • the present invention relates to an improved cosmetic and/or healthcare brush, preferably a hair brush, as well as a cosmetic and/or healthcare dispenser comprising the brush.
  • TWB Twisted Wire Brushes
  • EP1389436B1 discloses a brush having good combing and separation due to its wedge-shaped tips. Nonetheless, this brush does not provide high volume because a standard wiping action with this brush wipes off too much of the standard formulation in this action. Therefore it is desirable to provide an improved TWB cosmetic and healthcare brush providing both high separation and volume in one single TWB brush.
  • An example of a TWB brush that attempts to achieve these objectives can be found in US 2004/112400 A1 .
  • TWB cosmetic and healthcare brush providing favorable separation and volume of hair or skin, preferably eyelashes, and hair.
  • a cosmetic and healthcare brush for applying a cosmetic and healthcare mass onto the hair or skin, preferably eyelashes, having the features of independent claim 1.
  • said cosmetic and healthcare brush provides both favourable separation and volume properties. Because the bristles flare outwardly in various directions, their tips are closely packed together with little free spacing between them. This high packing density of the tips means that the hairs are unable to pass through the tips into the interior of the brush. Therefore it is necessary to have at least a portion of the bristles end in a tapered cross-section as in the molded brush of EP '436B1. In various embodiments, at least about 50, specifically, 75, more specifically 90 %, most specifically substantially all of the bristles of the brush of the present invention end in a tapered cross-section. With a standard wiping action, therefore a fairly high amount of standard cosmetic and healthcare formulation will be wiped off.
  • the cross-sections of the bristles vary in shape lengthwise along the bristle, which then provides for (indented) recesses or other similar reservoirs for cosmetic and healthcare along the length of the bristles, particularly in the active region near the tapered tip.
  • the cosmetic and healthcare residing in these recesses or reservoirs will not be wiped off during the standard wiping action.
  • the bristles have recesses, wherein preferably the recesses are distributed over the entire length of their bristle, preferably uniformly distributed over the entire length. In selected embodiments of the brush, at least about 50, 75, 90% or essentially all of the bristles have recesses. These recesses provide the just-discussed reservoirs for the cosmetic and healthcare to reside in.
  • the filaments of the bristle are manufactured having recesses distributed over the entire filament length. When the filaments are cut and mounted in the brush, the recesses are then randomly distributed over the lengths of the filaments of the bristle relative to its free end.
  • the recesses are uniformly distributed over the bristle length, so that at least some of the bristles in the active region will contain recesses to act as reservoirs for cosmetic and healthcare there.
  • the recesses have sufficient size to act as reservoirs, and thus they will have minimum axial lengths measured along the axis of the bristle of between about 0.05 and about 0.30, preferably between about 0.1 and about 0.2 mm.
  • the recesses will have substantially round, elliptical, oval, rectangular, triangular or square circumferences and often with a funnel-like narrowing profile towards the interior or core of the bristle.
  • the recesses are distributed non-randomly and substantially regularly with substantially constant spacing between recesses, preferably of about ⁇ 20, more preferably 10, most preferably 5% variation. In some more specific embodiments, the maximum distance between recesses is between about 0.2 to about 2.0 mm.
  • At least a portion of the recesses are located along the bristle length within a distance of 3 mm, preferably 2 mm, from the far end of the tapered end of the bristle ("free" bristle end). Locating the recesses within such a distance from the tapered end provides the advantage that the double action of separating and providing volume takes place within the active region of the bristle near its end. In various embodiments, at least one recess or a partial recess is located within one of these distances from the bristle end.
  • a minimum separation distance between the recesses, measured from the starting point to starting point of adjacent recesses, along their bristle is from about 0.1 mm to about 1.0 mm, preferably about 0.2 to about 0.8, more preferably about 0.3 to about 0.6.
  • the "starting point" of a particular recess is a point along the contour of the recess that is closest to far end of the tapered end of the bristle ("free" bristle end) on which the recess is located. This minimum spacing measured along the longitudinal axis of the bristle ensures that the recesses are effective so that they are not partially or fully removed by the taper.
  • the portion of the bristles ending in a tapered cross-section have a taper length of from about 0.2 mm to about 1 mm. If the taper length is too short, the bristles are not effective in separating and combing, and they would only bend the lashes but not comb them. In contrast, if the taper length is too long, then the bristles are not stiff or stable enough to provide separation. Therefore a taper length of from 0.2 mm to about 1 mm combined with typical fiber diameters and materials has proven to provide an effective optimization of these effects.
  • the bristles ending in a tapered cross-section are ending in a chisel-like taper consisting of either a single (chisel-like configuration) or a double angle (roof-like configuration) cut tangential to the axis of the bristle core.
  • the tapered end-section and wedge shapes need not necessarily be produced by cutting the filament or bristle, but the tapering and wedge-shape may be alternatively produced by a grinding process, for example, as is known from WO'436 A1.
  • the wedge angles ⁇ (relative to the longitudinal axis of the bristle) of the bristles may vary from about 80° to approximately 89° in one embodiment.
  • Smaller wedge angles ⁇ between about 5° and about 80° are also feasible in other embodiments.
  • Such single or double angle cuts are relatively inexpensive to produce.
  • a single angle cut will often be sufficient and economical, whereas larger diameter fibers will generally be most effective with a double angle cut.
  • Free ends of the mascara brush that have a roof or chisel-like configuration lead to the optimization of the property pair of a separation on the one hand and combing effect on the other hand.
  • free ends of the bristles that are wedge-shaped in cross section may be implemented also by bevelling the ends of the bristles.
  • the first recess located closest to the bristle end along a bristle is located at a distance of between about 0.1 to about 1.0 from the bristle end, preferably about 0.2 to about 0.8, more preferably about 0.3 mm to about 0.6 mm, even more preferably within the tapered length, most preferably a partial recess within the tapered length. Locating the first recess in this region close to the bristle end provides the advantage of the earlier-discussed double action within the active region of the bristle.
  • the capacity of the entire AR, FR or even bristle (FR and CFR) is increased due to the presence of the recesses 40.
  • the surface roughness, Rz which is also referred to as roughness depth, as determined in accordance with DIN EN ISO 4287/4288 of the entire AR, FR or even bristle (FR and CFR) is increased due to the presence of the recesses 40.
  • the surface roughness (Rz) is greater than 6.3, preferably 6.5, more preferably 7, most preferably 10 ⁇ m.
  • the bristle cross-section is non-cylindrical within and adjacent to the region of the recess.
  • the thin flexible fibers will be indented from both sides, for example, by means of opposed rollers or calendars through which the fiber travels. Such indentation processes will then typically impart the bristle with a non-cylindrical cross-section around the recess.
  • the recesses on a bristle are located substantially opposed to one another, so as to confer the bristle with a substantially hour glass or dumbbell shaped cross-section in the region of the bristle containing said recesses, more preferably so as to confer the bristle with a cross-sectional profile similar to that of goat hair.
  • Goat hair is a natural hair having both hard and soft components, and advantageously this natural hair has a non-round cross-section.
  • Goat hair generally has a fine point and a uniform body that, under a microscope, appears to consist of tapering, individual scales that are attached end to end. There are small pockets where these scalelike shapes meet that allow cosmetic or healthcare masses to be trapped and held until use.
  • At least a portion, preferably the majority, more preferably all, of the bristles ending in a tapered cross-section have at least one, preferably more than one, fibrous extension located with the tapered length, most preferably at the bristle free end.
  • fibrous extension located with the tapered length, most preferably at the bristle free end.
  • the normal bristles may pick up large volumes of mascara to be dispensed; however, they have difficulty to subsequently pay off the large volumes of mascara, a function which take place primarily at the surface, due to the thickness, stiffness and hardness (rigidity) of normal bristles.
  • the thin, flexible and soft fibrous extensions of the present invention have a much superior ability to pay off large volumes of mascara. Due to their thin, flexible and soft nature, the fibrous extensions are able to adjust, bend down, and lay on the surface of the bristle to efficiently aid the transfer of mascara from the bristle to the hair and then to subsequently recover.
  • the fibrous extension comprises primarily either the first, softer material, or the second, harder material, preferably the second, harder material.
  • it may be both the first, softer material and the second, harder material.
  • it is the second, harder material, optionally together with some amount of the first, softer material (for example, primarily PBT with a lesser amount of TPE) as it has been found that such fibrous extensions are readily produced using the filaments described in the present application together with the grinding method to create fibrous extensions. It is noted that the thicker the first, softer material, the more likely that it would comprise part of the fibrous extension.
  • the fibrous extensions are embodied so as to pick up a portion of a cosmetic and healthcare formulation when the cosmetic and healthcare brush is dipped into a cosmetic and healthcare formulation and a residue of the picked up portion of the cosmetic and healthcare formulation remains on the fibrous extension after subsequent wiping of the cosmetic and healthcare brush.
  • the fibrous extensions are selected to be suitably soft and flexible so that they may bend and substantially lay on the surface of the tapered end of the bristle, preferably while retaining the residue of the picked up portion of the cosmetic and healthcare formulation remains on the fibrous extension after subsequent wiping of the cosmetic and healthcare brush.
  • One aspect of the present invention is a cosmetic and healthcare dispenser comprising the cosmetic and healthcare brush of the present invention, particularly one of any one of the previously described embodiments, preferably a cosmetic and healthcare dispenser containing cosmetic and healthcare.
  • a cosmetic and healthcare dispenser will be imparted with the advantages of the brush of the present invention.
  • any one claim may be combined with the subject matter of one or more of the other claims.
  • the subject matter of any one brush claim may be combined with the subject matter of one or more other brush claims or the subject matter of one or more dispenser claims or the subject matter of a mixture of one or more brush claims and dispenser claims.
  • the subject matter of any one brush claim or dispenser claim may be combined with the subject matter of one or more other brush or dispenser claims or the subject matter of one or more brush claims or the subject matter of a mixture of one or more brush or dispenser claims and brush claims.
  • the subject matter of any one claim may be combined with the subject matters of any number of the other claims without limitation to the extent that such combinations are technically feasible.
  • Fig. 1 shows an embodiment of a cosmetic and healthcare brush 1 according to the present invention for applying a cosmetic and/or healthcare mass, preferably mascara, onto the hair or skin, preferably eyelashes 70.
  • the brush 1 comprises (i) a core section 10 and (ii) a bristle section 20, which comprises bristles 22, wherein at least a portion of the bristles end in a tapered end-section 30.
  • the bristles 22 flare outwardly in various directions from the core section 10 so that their tips are closely packed together with little intervening free space between them.
  • the brush 1 may have a shape that is either rotationally symmetric or non-rotationally symmetric, and the brush 1 may often fit into a tube having a maximum diameter of 12 mm.
  • the bristles 22 of the present invention are not specifically limited and may include synthetic fibers of various cross-sections such as solid round, hollow round, tapered, solid round tapered, quadrilobal, trilocular, synthetic goat hair, crimped, spoked hollow, trilobal, oval, star-shaped, square, X-shaped, longitudinally grooved, C-shaped, cross-shaped, triangular outer face shape with rounded edges, Y-shaped, H-shaped, honeycomb or a fourfold, cloverleaf type pattern in such a way that the bristle appears like a piece from a puzzle.
  • synthetic fibers of various cross-sections such as solid round, hollow round, tapered, solid round tapered, quadrilobal, trilocular, synthetic goat hair, crimped, spoked hollow, trilobal, oval, star-shaped, square, X-shaped, longitudinally grooved, C-shaped, cross-shaped, triangular outer face shape with rounded edges, Y-shaped, H-shaped, honeycomb or a fourfold
  • the cross-section is solid round as such a cross-section is readily manufactured with fibers having one polymer composition for a core and another polymer composition for the surrounding sheath.
  • Typical average diameters of bristles are between about 4 and about 10 mils or between about 0.075 and about 0.35, preferably about 0.1 and about 0.3, more preferably about 0.15 and 0.25 mm.
  • the filament used to manufacture the bristle has a thickness such that it would fit into a circumference of a circle of from about 0.1 to about 0.4 mm.
  • FIG. 2 shows a bristle 22 having a central fixing region (CFR), which is fixed between the two mutually-twisted together wire segments 12, and the remaining flexible regions (FR).
  • CFR central fixing region
  • the flexible regions (FR) are divided further into an active region (AR), which is embodied to be suitable to come into contact with the eyelashes 70 of a user.
  • the remaining base region (BR) will generally be too deep into the interior of the brush and will not come into contact with eyelashes 70 of a user during application of mascara. Both regions, AR and BR, however will come into contact with mascara taken up from the wiper 80 prior to application of mascara to the eyelashes 70.
  • the FR may be from about 2 to about 5 mm in length, and the AR may be then vary from about 0.8 to about 2 mm in length, respectively. Thus the AR may typically be from about 40% of the FR for short bristles to about 20% of the FR for longer bristles.
  • the bristle 22 may have regions of different cross-sectional shape.
  • the cross-sectional shape of the bristle 22 in the longitudinal direction can thereby change one or several times.
  • the bristle 22 may consist e.g. of sequential regions, with one or more round or circular (C), oval, polygonal (in particular square, triangular, rectangular, or octagonal), Y-shaped, crossed or star-shaped, annular, arc-shaped, circular or other earlier described segment-shaped cross-sections.
  • C round or circular
  • DB substantially hourglass or dumbbell
  • Fig. 3 shows a schematic view of the cross-sections 28 of the bristles 22 varying in shape lengthwise along the bristle 22.
  • recesses 40 may be located substantially opposed to one another so as to confer a substantially hour glass or dumbbell (DB) shaped cross-section.
  • Typical minimum cross-sectional diameters of the DB will be between about 0.05 and 0.125 mm and maximum cross-sectional diameters will be between about 0.15 and 0.35 mm.
  • the cross-section 28 is cylindrical (C) and bristle diameters will typically be between about 0.1 to about 0.2 mm.
  • the recesses 40 on the bristles 22 according to the present invention may be made by conventional methods such as indentation, etching, or embossing, such as with embossing rollers.
  • recesses will be created on the fibers before they are cut to length or profiled in the manufacture of the bristles.
  • Typical geometries of the recesses 40 include substantially quadratic, elliptical, oval or circular shapes, and dimensions of the recesses include lengths (x) along the axis of the bristle of between about 0.05 and about 0.18 mm, preferably between about 0.1 and about 0.14 mm.
  • Typical widths of the recesses (y) of the recesses will vary from about 0.03 to about 0.10, preferably from about 0.05 to about 0.07 mm.
  • Typical recesses will have an average maximum depth (z) which is about 10 to about 40, preferably about 25 to about 35 % of the diameter of the bristle 22. In other embodiments, the average maximum depth (z) is about 0.02 to about 0.12, preferably about 0.05 to about 0.08, most preferably about 0.06 mm.
  • the bristles 22 in the embodiment of Fig. 3 are seen to have an outer portion 24 made of a first, softer material and an inner portion 26 made of a second, harder material.
  • the use of said different materials for one and the same bristle 22 has turned out as being very advantageous for indenting or embossing the above mentioned structure into the bristle 22, so the combination of using two different materials and indenting or embossing is clearly preferred.
  • a particular advantage is to make the outer portion 24 of the softer material. This allows a lasting indentation or embossing while the hard core of the bristle determines the main direction in which the bristle extends, even after indentation or embossing.
  • the bristles of the cosmetic and healthcare brush 1 have an outer portion 24 made of a first, softer material and an inner portion 26 made of a second, harder material.
  • more than 50, 75, 90%, or essentially all of the bristles 22 have an outer portion 24 made of a first, softer material and an inner portion 26 made of a second, harder material.
  • such two component filaments are produced by co-extrusion.
  • the inner portion 26 comprises PBT and optional additives and the outer portion 24 comprises a thermoplastic elastomer and optional additives.
  • Typical additives are stabilizing or processing agents, colorants, or fillers common in the plastics injection molding industries or may be conditioning, anti-static, antimicrobial additives more common in the make-up industry.
  • Shore hardness may be measured according to ISO 7619-1, ISO 868 and ASTM D2240 with a portable hardness tester, and ball indentation hardness according to ISO 2039-1 ISO 2039-2 and Rockwell hardness according to ASTM D785 may be measured with laboratory indentors.
  • suitable first, softer materials include thermoplastic elastomers such as Styrenic block copolymers (TPE-s), Thermoplastic olefins (TPE-o), Elastomeric alloys (TPE-v or TPV), Thermoplastic polyurethanes (TPU), Thermoplastic copolyester (TPE-E), Thermoplastic polyamides.
  • suitable second, harder materials include thermoplastic engineering polymers such as polyesters like polybutylene terephthalate and polyethylene terephthalate or polyamides, as well as their copolymers and blends with other polymers.
  • the bristles 22 will contain fillers, such as glass or other inorganic fibers for providing abrasive or strengthened mechanical properties. As discussed later, these fiber fillers may be used to support the creation of fibrous extensions 60 (flagging) on the bristle 22. In specific embodiments the fillers may be in particulate form. However in many embodiments of the present invention, the bristles 22 will substantially lack, preferably be free of, any outwardly protruding particles. In certain embodiments the outer portion 24 made of a first, softer material will contain additives to provide antimicrobial properties to inhibit the growth of bacteria and mold.
  • fillers such as glass or other inorganic fibers for providing abrasive or strengthened mechanical properties. As discussed later, these fiber fillers may be used to support the creation of fibrous extensions 60 (flagging) on the bristle 22. In specific embodiments the fillers may be in particulate form. However in many embodiments of the present invention, the bristles 22 will substantially lack, preferably be free of, any outwardly protru
  • the bristles 22 have a tensile strength at breakpoint of more than about 200, preferably about 100 N/mm 2 and/or an elongation at breakpoint of more than about 100%, both as measured analogously to DIN EN ISO 527-1. In some further embodiments, the bristles 22 have a bending strength of at least about 30, specifically about 40, more specifically about 50 mN as measured analogously to DIN EN 53 121. In still further embodiments, the boiling shrinkage of the bristles 22 in less than about 20, preferably about 15 % as measured analogously to DIN 53 866 part 2.
  • the outer portion 24 made of a first, softer material will be in the form of a sheath over the inner portion 26 made of a second, harder material in form of a core.
  • the sheath thickness will be between about 0.005 and about 0.15, preferably about 0.01 and about 0.1, and more preferably about 0.015 and about 0.04 mm.
  • the bristles 22 will have a total maximum diameter of about 2 mil to about 12 mil, alternatively about 0.1 to about 0.4 mm.
  • the outer portion 24 will be less than about 25% of the total mass or alternatively the thickness of the bristle 22.
  • Fig. 4 shows an embodiment in which recesses 40 are located along the length of the bristle 22 and near the tapered end-section 30.
  • the first recess 42 is located closest to the bristle end 50 at a distance of about 0.15 to about 0.4 mm.
  • the bristle 22 has a fibrous extension 60 located within the tapered end-section 30, in particular here at the bristle end 50. In one embodiment (not shown), all of the bristles 22 end in a tapered end-section 30 having at least one fibrous extension 60, and, in another more specific embodiment, some of the bristles 22 have at least two fibrous extensions 60.
  • the fibrous extensions 60 in the present invention may be generated by conventional flagging means and methods to split bristles 22 one or more times near their tip in order to increase their surface area and capacity for taking up material.
  • the fibrous extensions are also particularly beneficial for some applications involving contact of the bristle with many sensitive nerves of the user, such as on the lips. In other cases, they are very useful in applying liquid compositions, as in the case of nail polish.
  • Such flagging methods for bristles 22 include sanding or grinding or polishing, adhering flocks to the bristle core through thermal or chemical means, electrostatic deposition, cold drawing them to the breaking point, subjecting them to an impact on their surface, for example, by slitting them with sharp metal knife blades mounted on a rotating spindle, or co-extrusion.
  • the fibrous extensions 60 are generated by means of sanding, polishing, or grinding.
  • Sanding is a preferred method for creating flagging as it is a milder method. Sanding creates flagging or fibrous extensions without splitting the bristle end into sections as with cutting methods.
  • the fibers or filaments used for manufacturing the bristles 22 may be filled with reinforcing fibers such as glass or carbon fibers.
  • Typical fibrous extensions 60 will often be in the form of several separate partial cross-sections or fingers, often yielding a fleecy or bulbous structure.
  • the fibrous extensions 60 will typically often have maximum end to end lengths when viewed under a microscope in unloaded form of between about 1 ⁇ 4 to about 4x, preferably from about 1/2 to about 3x their average bristle diameter. Alternatively, they will have maximum end to end lengths of between about 1/5 to about 3x, specifically about 1 ⁇ 4 to about 2x the taper length of their tapered end-section 30.
  • Soft and flexible in reference to the fibrous extension 60 refers to the ability of the fibrous extension 60 to bend and substantially lay on the surface of the tapered end-section 30 of the bristle 22 when loaded with material.
  • the fibrous extension 60 has substantially no bending recovery strength in comparison to the bristle 22. This ability to bend and lay on the surface may be observed microscopically upon testing of bristle loading with material.
  • Alternative methods of measuring bending recovery are also known from " The Measurement Of The Bending Elastic Recovery Of Filaments", by J. Skelton, as published in the Journal of the Textile Institute Transactions Vol. 56 , Iss. 8, 1965 .
  • Fig. 6 shows the interaction between a fibrous extension 60 of a bristle 22 embodiment and two lashes 70 showing pay off (a) starting with the first contact of the two lashes 70 with the fibrous extension 60 and then (b) how the lashes 70 move the fibrous extension 60 so that it bends and substantially lays on the surface of the tapered end-section 30 of the bristle 22.
  • pay off (a) starting with the first contact of the two lashes 70 with the fibrous extension 60 and then (b) how the lashes 70 move the fibrous extension 60 so that it bends and substantially lays on the surface of the tapered end-section 30 of the bristle 22.
  • Such behavior may be observed under a microscope upon testing the take-up and pay-off of the brush 1 or its bristles 22 with cosmetic or healthcare masses.
  • Fig. 7 shows the interaction between an orifice 82 of a wiper 80 and the fibrous extensions 60 and the Flexible Region (FR) of the bristles 22.
  • FR Flexible Region
  • the cosmetic and/or healthcare masses in the present invention are not specifically limited and may include mascara, eye shadow, eyeliner, nail lacquer, lip gloss and other lip make-up.

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Claims (13)

  1. Un pinceau cosmétique et/ou de soins (1) pour appliquer une masse cosmétique et/ou de soins sur les cheveux ou la peau, de préférence les cils (70), comprenant:
    (i) une section centrale (10) d'au moins deux segments de fil torsadés mutuellement (12),
    (ii) une section de poils (20) comprenant des poils (22) fixés entre lesdits deux segments de fil torsadés mutuellement (12), les poils (22) s'évasent vers l'extérieur dans diverses directions à partir de la section centrale (10), au moins une partie des poils (22) se termine par une section d'extrémité effilée (30), et les poils ont une partie extérieure (24) faite d'un premier matériau plus doux et une partie intérieure (26) faite d'un deuxième matériau plus dur, les sections transversales (28) des poils (22) variant en forme sur la longueur du poil (22), au moins une partie des poils (22) ayant des évidements (40), où la section transversale du poil (28) est non cylindrique à l'intérieur et adjacente à la région de l'évidement (40), et où les évidements (40) sur un poil (22) sont situés sensiblement en opposition l'un par rapport à l'autre de manière à conférer au poil (22) une section transversale sensiblement en forme de sablier ou d'haltère (DB) dans la région du poil (22) contenant lesdits évidements (40).
  2. Le pinceau cosmétique et de soins (1) selon la revendication 1, dans lequel les évidements (40) sont répartis sur toute la longueur de leur poil (22), de préférence uniformément répartis sur toute la longueur.
  3. Le pinceau cosmétique et de soins (1) selon la revendication 2, dans lequel au moins une partie des évidements (40) est située le long de la longueur du poil à une distance d'environ 3 mm, de préférence d'environ 2 mm, de l'extrémité du poil (50) de la section d'extrémité effilée (30) du poil (22).
  4. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 2 ou 3, dans lequel une distance de séparation minimale entre les évidements (40), mesurée d'un point de départ à un point de départ des évidements adjacents (40), le long de leur poil (22) est d'environ 0,1 mm à environ 1,0 mm, de préférence d'environ 0,2 à environ 0,8, encore mieux d'environ 0,3 à environ 0,6.
  5. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 1 à 4, dans lequel la partie des poils (22) se terminant par une section d'extrémité effilée (30) a une longueur d'effilement (35) d'environ 0,2 mm à environ 1 mm.
  6. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 1 à 5, dans lequel les poils (22) se terminant par une section d'extrémité effilée (30) se terminent par un effilement de type ciseau consistant en une coupe angulaire simple ou double tangente à l'axe du noyau du poil.
  7. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 2 à 6, dans lequel le premier évidement (42) situé le plus près de l'extrémité du poil (50) le long d'un poil (22) est situé à une distance d'environ 0,1 mm à environ 1,0 mm de l'extrémité du poil (50), de préférence d'environ 0,2 à environ 0,8, encore mieux d'environ 0,3 à environ 0,6, et même mieux encore à l'intérieur de la section d'extrémité effilée (30), de préférence le premier évidement (42) est un évidement partiel (40') à l'intérieur de la section d'extrémité effilée (30).
  8. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 1 à 7, dans lequel les évidements (40) sur un poil (22) sont situés sensiblement en opposition l'un par rapport à l'autre de manière à conférer au poil (22) un profil de section transversale similaire à celui du poil de chèvre.
  9. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 1 à 8, dans lequel au moins une partie, de préférence la majorité, et encore mieux la totalité, des poils (22) se terminant par une section d'extrémité effilée (30) ont au moins une, de préférence plusieurs, extensions fibreuses (60) situées à l'intérieur de la section d'extrémité effilée (30), de préférence à l'extrémité du poil (50).
  10. Le pinceau cosmétique et de soins (1) selon la revendication 9, dans lequel l'extension fibreuse (60) comprend soit le premier matériau plus doux, soit le deuxième matériau plus dur, de préférence soit une majorité de masse du premier matériau plus doux et une minorité de masse du deuxième matériau plus dur OU une majorité de masse du deuxième matériau plus dur et une minorité de masse du premier matériau plus doux.
  11. Le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 9 ou 10, dans lequel les extensions fibreuses (60) sont conçues pour prélever une partie d'une formulation cosmétique et de soins lorsque le pinceau cosmétique et de soins (1) est plongé dans une formulation cosmétique et de soins et qu'un résidu de la partie prélevée de la formulation cosmétique et de soins reste sur l'extension fibreuse (60) après un essuyage ultérieur du pinceau cosmétique et de soins (1).
  12. Le pinceau cosmétique et de soins (1) selon la revendication 11, dans lequel les extensions fibreuses (60) sont choisies pour être suffisamment souples et flexibles pour pouvoir se plier et reposer sensiblement sur la surface de la section d'extrémité effilée (30) du poil (22), de préférence tout en conservant le résidu de la partie prélevée de la formulation cosmétique et de soins sur l'extension fibreuse (60) après un essuyage ultérieur du pinceau cosmétique et de soins (1).
  13. Un distributeur cosmétique et de soins comprenant le pinceau cosmétique et de soins (1) selon l'une quelconque des revendications 1 à 12, de préférence un distributeur cosmétique et de soins contenant une masse cosmétique et/ou de soins
EP19702264.3A 2018-01-30 2019-01-30 Brosse cosmétique et de soins de santé améliorée Active EP3745910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18154226.7A EP3516985A1 (fr) 2018-01-30 2018-01-30 Brosse cosmétique et de soins de santé améliorée
PCT/EP2019/052275 WO2019149766A1 (fr) 2018-01-30 2019-01-30 Brosse cosmétique et de soins de santé améliorée

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EP3745910B1 true EP3745910B1 (fr) 2024-03-06

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4733425A (en) 1986-06-16 1988-03-29 Sanderson-Macleod, Inc. Mascara brush
DE4022890A1 (de) * 1990-07-18 1992-01-23 Geka Brush Georg Karl Gmbh Buerste, insbesondere mascara-buerste
DE29700611U1 (de) * 1997-01-15 1997-03-13 Klaus Sindel RUSI-Kosmetik-Pinsel-Brushes GmbH, 91572 Bechhofen Fasern für Kosmetikbürsten
DE19911763A1 (de) 1999-03-16 2000-09-21 Coronet Werke Gmbh Applikatorbürste für flüssige oder pastöse Mittel, insbesondere für dekorative Kosmetika wie Mascara
DE10232589A1 (de) * 2002-07-18 2004-01-29 Geka Brush Gmbh Mascara-Bürstchen
US20040112400A1 (en) * 2002-12-16 2004-06-17 Avon Products, Inc. Applicator brush with improved bristles
JP2010039683A (ja) 2008-08-04 2010-02-18 B-Core Inc 光学式自動認識コード及びそれを用いた管理システム
FR2973667A1 (fr) * 2011-04-06 2012-10-12 Oreal Brosse et dispositif de conditionnement et d'application comportant une telle brosse
BR112017001244A2 (pt) 2014-07-31 2019-05-14 Geka Gmbh pincel aplicador com núcleo de fio tendo cerdas de materiais múltiplos

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WO2019149766A1 (fr) 2019-08-08
EP3516985A1 (fr) 2019-07-31

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