WO2023285558A1 - Unité de brosse cosmétique - Google Patents

Unité de brosse cosmétique Download PDF

Info

Publication number
WO2023285558A1
WO2023285558A1 PCT/EP2022/069649 EP2022069649W WO2023285558A1 WO 2023285558 A1 WO2023285558 A1 WO 2023285558A1 EP 2022069649 W EP2022069649 W EP 2022069649W WO 2023285558 A1 WO2023285558 A1 WO 2023285558A1
Authority
WO
WIPO (PCT)
Prior art keywords
bristle
bristles
brush unit
cosmetic brush
fingers
Prior art date
Application number
PCT/EP2022/069649
Other languages
English (en)
Inventor
Wolfgang KAMM
Original Assignee
Geka Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geka Gmbh filed Critical Geka Gmbh
Publication of WO2023285558A1 publication Critical patent/WO2023285558A1/fr

Links

Classifications

    • 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
    • A46D1/0292—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

Definitions

  • the invention relates to a cosmetic brush unit comprising a bristle carrier according to the generic portion of claim 1, and to a cosmetic applicator comprising in most cases a stem and in all cases a corresponding cosmetic brush unit according to the generic portion of claim 11, and to a method of manu facturing the cosmetic brush unit according to the generic portion of claim 12.
  • Cosmetic brush units are part of a cosmetic applicator and are used to apply make-up and care products, which is referred to collectively as "make-up” below. To do this, the bristles are first wetted with the make-up. The make-up is then applied to the desired area with the help of the bristles. In the case of an eyelash brush, the bristles are first dipped into a con tainer of mascara. Then, mostly after wiping the bristle cov ering, the eyelashes are mascaraed using the bristles residu- ally wetted with mascara. To do this, the cosmetic brush unit is brought into contact with the eyelashes with rotating and stroking movements.
  • cosmetic brush units designed as eyelash brushes can be divided into two categories that differ in the arrange ment and material of their bristles.
  • the other category of cosmetic brush units designed as eyelash brushes have fewer and especially stiffer bristles. They are used to make the eyelashes look longer.
  • the bristles wetted with mascara are pressed against the base of the lashes in the area of the eyelid and then moved towards the free end of the lashes under constant pressure against the lashes. This straightens the lashes so that their free end is brought to a greater distance from the eyelid. This makes the lashes appear longer.
  • a cos metic brush unit having a bristle carrier in the form of at least two twisted wires.
  • the twisted wires hold a plurality of filaments. These are clamped in such a way that each filament forms bristles extending outwards, preferably substantially radially.
  • the bristles constitute a brush.
  • the solution ac cording to the invention is characterised in that the bristles - measured where their cross-section is monolithic and not di vided - preferably have a diameter in the range from 0.076 mm to 0.3556 mm.
  • All or at least some, preferably at least the majority of the bristles are divided into at least two, pref erably at least four bristle fingers in the area of their free distal ends. Ideally the majority of the bristles shows not more than five bristle fingers.
  • the material of the fila ments forming the bristles can be selected in such a way that when the bristles wetted with mascara are pressed against the eyelashes, the bristles are only slightly deflected in the area of their monolithic cross-section.
  • the mascara-wetted bristles can then be pressed against the eyelashes in the area of the eyelid in such a way that the eyelashes are deflected in the direction of the eyelid. If the bristles are then moved towards the free end of the eyelashes under constant pressure, this leads to a straightening of the eyelashes. This makes the eyelashes appear longer.
  • the individual bristle fingers in the area of the free distal ends of the bristles are deflected due to their reduced diameter in such a way that they penetrate into the spaces between the individual lashes.
  • the reucked diameter of the bristle fingers facilitates their pene tration into the spaces between the individual lashes. This ensures that the mascara is evenly applied to the spaces be tween the lashes. This makes the lashes appear more volumi- notebook.
  • the term "filament” means a textile fibre and in particular a plastic fibre whose length exceeds its diameter by at least a factor of 10.
  • bristle finger refers to a region of a bristle that has a reduced resultant diameter and shares only a common root with the other bristle fingers of a bristle, but is not con nected to the other bristle fingers in the region of its free end.
  • the solution to the aforementioned problem is provided by a cosmetic applicator with a handle and an inventive cosmetic brush unit as disclosed before.
  • the cosmetic applicator is characterised in that a handle preferably adjoins the stem usually in the form of a closure cap for a cosmetic storage container .
  • the cosmetic brush unit of the cosmetic ap plicator is first dipped into a cosmetic supply container so that the brushes of the cosmetic brush unit are evenly wetted with make-up.
  • the cosmetic brush unit is then moved to the area where the make-up is to be applied.
  • the cosmetic applica tor is held by its handle.
  • an inventive method of manufacturing the cosmetic brush comprising the steps of: a) first arranging the bristles between at least two wires; b) then twisting the at least two wires so that a por tion of the bristles is held between the at least two twisted wires; c) then the tips of the bristles are beaten using a special striking tool preferably in the shape of a rotating wire brush, i. e.
  • a brush carrying bristle covering formed bristles consisting of metal wires so that preferably each tip of the bristles is divided into at least two better at least four cross-sectional segments which are separated from each other in the region of their free ends and form at least four bristle fingers.
  • the bristle covering of the rotating wire brush preferably has the shape of a cylinder, at least essen tially. This method of production allows the cosmetic brush unit, which combines the two categories of eyelash brushes described above, to be manufactured with little effort.
  • the at least four bristle fingers make up at least 10% of the total length of the bristle to which they belong. Even better, the bristle fingers make up at least 20% of the total length of the bris tle to which they belong. This is clearly preferred but shorter bristle fingers could be a matter of choice for some particular applications, too.
  • the at least four bristle fingers extend above their root side by side in diverging di rections.
  • the bristle fingers are separated from each other by essentially V-shaped gaps.
  • the bristle fingers are only deflected in the area of the free ends when the bristles are pressed against the eyelashes. If, on the other hand, the bristle fingers had the same stiffness along their entire length, this would pos sibly result in the bristle fingers not penetrating into the spaces between the lashes, but merely bridging over the spaces between several lashes.
  • the bristle fingers are grouped around a free central space.
  • the cross-section of the free central space increases continuously, often essentially conically, in the direction of the distal end.
  • each bristle finger is stiff enough to essentially return to its original position after being deflected by a more than insignificant load.
  • Each bristle finger behaves like an elastic bristle. This pre vents the individual bristle fingers from sticking or catching on each other. In addition, a certain stiffness of the bristle fingers prevents the bristle fingers from bridging over the spaces between several eyelashes when they are pressed against the eyelashes, instead of penetrating into the spaces.
  • deflection due to a more than insignificant load means in particular the deflection of the bristle fingers that occurs when the bristles are pressed against the eyelashes.
  • each bristle finger bears a beard of a plurality of substantially limp strands at its dis tal end.
  • essentially slack describes the property of the ma terial not to return to its original position on its own after being deflected by a more than insignificant load.
  • each bristle finger has a substantially rounded lateral surface portion. This lateral surface portion is mostly continuously convex in the circum ferential direction.
  • each bristle finger has two substantially non-circular lateral surface portions. These are preferably substantially straight. The substantially straight lateral surface portions meet along a line. In the direction of the substantially rounded lateral surface section, the sub stantially rounded lateral surface sections diverge or diverge from each other. Preferably, said lateral surface sections to gether form the entire lateral surface.
  • the cross-sectional area of the individual bristle fingers thus forms a pie-cut-like geometry.
  • each bristle finger formed in this way enables the bristle finger to penetrate the space between two lashes like a wedge.
  • the lateral surfaces of the individual lashes adjacent to the respective gap are ideally coated with make-up .
  • the bristles are made of or contain a polymeric mate rial. This is ideally polyamide.
  • the choice of polyamide as the material for the bristles makes it possible to produce the bristles as fibres by melt spin ning. This allows the bristles to be mass-produced at low cost.
  • the bristles have a Shore D hardness in the range of 55 to 85 and preferably from 70 to 85.
  • the Shore D Hardness measurements should be performed according to the standards ASTM D2240, ISO 868.
  • the at least two twisted wires are made of stain less steel.
  • Each of the at least two twisted wires has a diam eter in the range of at least 0.4 mm to preferably 0.9 mm.
  • the good formability of stainless steels enables cost-effec- tive production.
  • the corrosion resistance also ensures a long service life of the cosmetic brush unit.
  • the bristle carrier formed by the twisted wires has a relatively small overall diameter. This is advantageous for the manageability of the cosmetic brush unit or the cosmetic applicator during make-up application.
  • Fig. 1 shows a side view of a whole cosmetic brush unit ac cording to the invention.
  • Fig. 2 shows an enlarged partial view of the cosmetic brush unit shown in Fig. 1.
  • Fig. 3 shows the bristle fingers of a single bristle in side view.
  • Fig. 4 shows a top view of the bristle shown in Fig. 3.
  • Fig. 1 shows a side view of a cosmetic brush unit 1 according to the invention.
  • the cosmetic brush unit 1 is formed by the bristles 4 and the bristle carrier 2 carrying the bristles 4.
  • the bristle carrier 2 consists of two wires 3 twisted to gether.
  • the bristles 4 are held on the bristle carrier 2 by being clamped between the twisted wires 3.
  • the bristles 4 were placed between the two wires 3 before the twisting of the wires 3 and held there during the twisting process.
  • the free ends of the bristles 4 protrude in a radial direction from the bristle carrier 2.
  • the bristles 4 have a constant length over approximately two thirds of the length of the bristle carrier 2, so that in this area a cylindrical bristle set or a cylindrical brush section may result. In the area of the last third of the bristle carrier 2, the length of the bristles 4 can continuously be reduced. In this area, the result is then a truncated pyramid-like bristle trim or trun cated pyramid-like brush section.
  • the bristles 4 are not arranged uniformly around the bristle carrier 2 in the circumferential direction. Ra ther, the bristles 4 are arranged helically around the longi tudinal axis of the bristle carrier 2.
  • the bristle carrier 2 protrudes at one end beyond the bristle set formed by the bristles 4, i.e. is not occupied by bristles 4 along a section. This section of the bristle carrier 2 serves to connect the cosmetic brush unit to a handle of a cosmetic applicator, see Figure 1.
  • Fig. 2 shows an enlarged partial view of the cosmetic brush unit from Fig. 1. This clearly shows how the individual bris tles 4 are clamped between the twisted wires 3.
  • the bristles 4 can also be glued to one of the wires 3 before twisting.
  • Figs. 3 and 4 show a more detailed view to the free end of a single bristle 4 as shown by Fig. 2.
  • the bristle 4 is shown in Fig. 3 more or less in side view and in Fig. 4 essentially in top view.
  • Fig. 3 and in particular Fig. 4 show the bristle fingers 5 of the bristle 4.
  • Each of the four bristle fingers 5 has a quar ter-circle cross-section.
  • the lateral surface of the individ ual bristle fingers 5 thus consists of a rounded, essentially circular arc-shaped lateral surface section 9 and - here - two essentially flat lateral surface sections 10.
  • the two essen tially or more or less flat lateral surface sections 10 meet along a straight line and thus form an edge on the bristle finger 5.
  • a free central space 6 with a circular cross- section.
  • the diameter of the free central space 6 decreases, in most cases continuously, from the free end of the bristle fingers 5 to the value 0, so that the bristle fingers 5 merge into each other or into the bristle 4.
  • the area where the bristle fingers 5 merge into the bristle 4 forms the root 7 of the individual bristle fingers 5.
  • a beard 8 is also attached to the free ends of each bristle finger 5, which consists of a plurality of individual strands of the bristle finger 5, see Fig. 3, while Fig. 4 shows the status after removal of the beards 8.

Landscapes

  • Brushes (AREA)

Abstract

L'invention concerne une unité de brosse cosmétique (1) comprenant un support de poils (2) sous la forme d'au moins deux fils torsadés (3) maintenant une pluralité de filaments (4) serrés de telle sorte que chaque filament (4) forme des poils s'étendant vers l'extérieur (4) constituant une brosse, caractérisée par le fait que les poils (4) ont de préférence un diamètre dans la plage allant de 0,076 mm à 0,3556 mm, et les poils (4) étant divisés en plusieurs, de préférence au moins quatre, doigts de poil (5) dans la région de leurs extrémités distales libres.
PCT/EP2022/069649 2021-07-16 2022-07-13 Unité de brosse cosmétique WO2023285558A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21186171.1 2021-07-16
EP21186171.1A EP4119000A1 (fr) 2021-07-16 2021-07-16 Unité de brosse cosmétique

Publications (1)

Publication Number Publication Date
WO2023285558A1 true WO2023285558A1 (fr) 2023-01-19

Family

ID=76958848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/069649 WO2023285558A1 (fr) 2021-07-16 2022-07-13 Unité de brosse cosmétique

Country Status (2)

Country Link
EP (1) EP4119000A1 (fr)
WO (1) WO2023285558A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB750509A (en) * 1953-07-10 1956-06-20 Raymond Lafond Sharpened and frayed artificial fibres for brush bristles, their process of manufacture and a machine for carrying it out
US6241411B1 (en) * 1999-04-19 2001-06-05 Revlon Consumer Products Corporation Mascara brush, container, and method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB750509A (en) * 1953-07-10 1956-06-20 Raymond Lafond Sharpened and frayed artificial fibres for brush bristles, their process of manufacture and a machine for carrying it out
US6241411B1 (en) * 1999-04-19 2001-06-05 Revlon Consumer Products Corporation Mascara brush, container, and method

Also Published As

Publication number Publication date
EP4119000A1 (fr) 2023-01-18

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