WO2021185988A1 - Support de poils, brosse et procédé de production du support de poils et de la brosse - Google Patents

Support de poils, brosse et procédé de production du support de poils et de la brosse Download PDF

Info

Publication number
WO2021185988A1
WO2021185988A1 PCT/EP2021/057000 EP2021057000W WO2021185988A1 WO 2021185988 A1 WO2021185988 A1 WO 2021185988A1 EP 2021057000 W EP2021057000 W EP 2021057000W WO 2021185988 A1 WO2021185988 A1 WO 2021185988A1
Authority
WO
WIPO (PCT)
Prior art keywords
bristle
anchoring
carrier body
carrier
brush
Prior art date
Application number
PCT/EP2021/057000
Other languages
German (de)
English (en)
Inventor
Bart Gerard Boucherie
Original Assignee
Gb Boucherie Nv
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 Gb Boucherie Nv filed Critical Gb Boucherie Nv
Priority to EP21713387.5A priority Critical patent/EP4120873A1/fr
Priority to CN202180022779.5A priority patent/CN115334936A/zh
Publication of WO2021185988A1 publication Critical patent/WO2021185988A1/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
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by wires or other anchoring means, specially for U-shaped bristle tufts
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/021—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups arranged like in cosmetics brushes, e.g. mascara, nail polish, eye shadow
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1046—Brush used for applying cosmetics
    • 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
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures
    • A46B2200/108—Inter-dental toothbrush, i.e. for cleaning interdental spaces specifically

Definitions

  • the invention relates to a bristle carrier, a method for producing the bristle carrier, a brush with the bristle carrier and a method for producing the brush.
  • the brush consists of filigree brushes such as cosmetic brushes, mascara brushes or interdental brushes, the common feature of which is that they have a bristle insert, the supporting structure of which consists of a wire that is bent 180 ° in the middle and the two sections of which are twisted together, a plurality of bristles being pinched between the two twisted-together portions along a portion of the wire.
  • the part of the wire provided with the bristles forms a bristle section, and a part which is not provided with bristles forms an anchoring section which is fastened on or in the carrier body.
  • the anchoring section is heated and pressed into the material of the carrier body in order to be anchored there after it and the material heated by it have cooled down again.
  • the disadvantage of this Method also consists in a very limited clock rate, since it takes some time to warm up the anchoring section and then to let it cool down again.
  • Another method is to provide a receiving socket for the anchoring section in the support body, heating the material of the receiving socket to a softening temperature and then pressing the socket together from two sides after the anchoring section has been inserted into the receiving socket. This method enables high clock rates to be achieved.
  • the object of the invention is to create a brush of the cosmetic brush, mascara brush, interdental brush or similar type which can be manufactured at a high cycle rate and in which the bristle insert is reliably anchored on the carrier body.
  • the object of the invention is also to provide a method for producing such a brush.
  • a bristle carrier for a brush in particular for a cosmetic brush, a mascara brush or an interdental brush, with a carrier body and a bristle insert, the bristle insert having two wire sections that are twisted together and a plurality of them between them in a bristle section of bristles and form an anchoring section in a section free of bristles, and wherein the carrier body has a receptacle for the anchoring section which extends through the carrier body from a front side facing the bristles to a rear side, which forms an anchoring surface for the end of the anchoring portion, the end being embedded in the anchoring surface.
  • a brush with a holder and such a bristle carrier is also provided. Furthermore, a method for producing such a bristle carrier by means of the following steps is provided to achieve this object: First, the carrier body is provided. The anchoring section is then placed in such a way that its end facing away from the bristles protrudes from the carrier body on the rear side. Finally, the anchoring section is embedded in the anchoring surface by means of a sonotrode.
  • the invention is based on the basic idea of using a simply constructed bristle carrier which is optimized with regard to the reliable attachment of the bristle insert to the carrier body.
  • the optimization here consists in using an external, easily accessible surface of the carrier body as an anchoring surface, namely the rear, without having to take optical aspects into account.
  • the exposed anchoring surface which may not be overly advantageous in terms of optics, can later be concealed by attaching the carrier body together with the bristle insert in a suitable holder.
  • “Embedded” here means that the anchoring section, which consists of wire, forms an intimate connection with the material of the carrier body through the combined effect of ultrasonic vibrations and pressure. If the carrier body is made of plastic, the material of the carrier body melts locally under the effect of the energy introduced, so that the anchoring section locally sinks into the carrier body. As a result, the embedding section is formed in which the anchoring section is pressed so far into the material of the carrier body that it is held there in a form-fitting manner when the material of the carrier body has solidified again. Depending on the material of the carrier body, the first carrier body can also be glued to the anchoring section of the bristle insert. Overall, the result is a connection that corresponds to an ultrasonic weld.
  • the anchoring surface extends in a direction which deviates by at least 30 ° from the direction of extension of the receptacle. Accordingly, the end of the anchoring section, which is embedded in the anchoring surface, also extends in a different direction than the remaining part of the anchoring section of the bristle insert. This prevents the bristle insert from being screwed out of the carrier body as a whole.
  • the anchoring surface can preferably extend perpendicular to the direction of extension of the receptacle, so that overall a short length of the carrier body is obtained.
  • the diameter of the receptacle preferably corresponds to the diameter of the anchoring section, so that the bristle insert is guided in the receptacle without play or with only a small amount of play.
  • the carrier body can be made in one piece, so that the anchoring section is pushed through the receptacle.
  • the carrier body is in two or more parts, so that the anchoring section is inserted into the receptacle when the carrier body is open and the carrier body is then closed.
  • the last variant is particularly advantageous when the anchoring section is pre-bent in such a way that its end protrudes laterally.
  • the carrier body has a bush-like shape with a retaining flange on the rear side facing away from the bristles.
  • the retaining flange makes it easier to attach the carrier body firmly in a holder.
  • the retaining flange provides sufficient material in which the end of the anchoring section can be reliably embedded.
  • the carrier body has a spherical shape, with the from The rear side facing away from the bristle shoulder can be designed to be flattened, so that the anchoring surface is formed there.
  • the carrier body can have latching configurations which interact with complementary latching configurations on the holder.
  • the carrier body can have shoulders or shoulders, on which latching hooks that are attached to the holder can engage. This makes it possible to attach the carrier body to the holder with little effort and to replace it with a new one if necessary.
  • the carrier body consists of an injection-moldable plastic so that it can be manufactured in large numbers at low costs.
  • the carrier body can consist of a natural material, in particular wood or bamboo, so that an environmentally friendly product is obtained.
  • the end of the anchoring section is bent over beforehand by means of a bending tool or also by means of the sonotrode and is pressed against the anchoring surface.
  • a straight anchoring section of the bristle insert can be used, which is pushed into the receptacle of the carrier body.
  • the end of the anchoring section is pre-bent before it is pushed into the receptacle.
  • the end of the anchoring section already extends in an orientation that facilitates embedding in the anchoring surface.
  • the anchoring section is inserted into the receptacle until its end protrudes on the back. If, on the other hand, a multi-part carrier body is used, the anchoring section can also be inserted into the open carrier body. This is particularly useful when the end of the anchoring section has already been bent by 90 °, for example, in order to facilitate embedding in the anchoring surface of the carrier body. According to one embodiment of the invention, it is provided that the end of the anchoring section is pressed into a groove in the anchoring surface. This can ensure that the end of the anchoring section, when it is embedded in the anchoring surface, no longer protrudes beyond the plane of the anchoring surface.
  • the end of the anchoring section melts or burns a groove into the anchoring surface.
  • the advantage of this embodiment is that the end of the anchoring section does not have to be positioned in a prefabricated groove, but rather the end of the anchoring section burns or melts the groove itself.
  • the disadvantage is that a higher expenditure of energy is required if the end of the anchoring section is to be embedded very deeply in the material of the carrier body.
  • a brush is also provided in which the bristle carrier is positively and non-detachably received in the holding section.
  • This can be achieved in particular by placing the bristle carrier in an injection mold into which a plastic material is then injected, which forms the holder.
  • the holder can be designed in particular from an optical point of view, in which case, with regard to the design of the carrier body and the connection of the end of the anchoring section to the anchoring surface, no consideration whatsoever has to be taken with regard to optical aspects; this area is completely embedded in the interior of the holder in the finished brush.
  • the injection mold preferably has a sealing surface which rests against the carrier body, the sealing surface being divided into two parts by the parting plane of the injection mold.
  • the particular advantage of this embodiment is that the injection mold does not have to seal in the area of the wire sections of the bristle carrier, but that the injection mold can press against the carrier body and seal there. This avoids the wear that occurs when an injection mold would have to attack a metallic component, in this case the wire of the bristle carrier.
  • FIGS. 1 a to 1 d in a perspective view of a carrier body which is provided with a bristle insert by means of a method according to the invention
  • FIGS. 2a to 2d are views corresponding to FIGS. 1a to 1d, the carrier body being shown in section;
  • FIG. 3 shows a section along the plane X-X of FIG. 1d in a carrier body according to a first embodiment
  • FIG. 4 shows a view corresponding to that of FIG. 3 with a carrier body according to a second embodiment
  • FIG. 5 shows a schematic plan view of a brush according to a first embodiment, the bristle insert shown in FIG. 1 d being used;
  • FIG. 6 shows, in a sectional view, an injection mold which is used to position a brush according to a second embodiment using a bristle carrier according to the invention
  • FIG. 7 shows a schematic view of a brush which was produced by means of the injection mold of FIG. 6;
  • FIG. 8 in a perspective view, a bristle carrier according to an alternative embodiment.
  • FIG. 9 shows a perspective view of a bristle carrier according to a variant of the embodiment of FIG.
  • FIGS. 1a to 2d it is explained below how a bristle carrier 10 can be produced which has a carrier body 12 and a bristle insert 14 attached to it.
  • the carrier body 12 has a sleeve-shaped section 16 and a flange flange 18 which are made in one piece with one another.
  • the sleeve-shaped portion 16 and Retaining flange 18 each have a cylindrical outer surface which are centered on a common central axis, but have different diameters; the outer diameter of the retaining flange 18 is larger than the outer diameter of the sleeve-shaped section 16.
  • a receptacle 20 which is designed as an opening with a constant diameter, extends centrally through the carrier body 12.
  • the rear side of the holding flange 18 facing away from the bush-shaped section 16 extends here in a plane which is perpendicular to the longitudinal axis of the receptacle 20. In terms of its function, this rear side is also referred to as anchoring surface 22.
  • the bristle set 14 consists of a piece of wire that is bent in the middle so that two sections of equal length are included. These are twisted together. In this case, a large number of bristles are introduced between the two wire sections that are twisted with one another in one area, so that the bristles are clamped between the wire sections. This forms a bristle section 24. Outside the bristle section 28, the twisted wire sections are free of bristles. Some of the bristle-free wire sections are used to fasten or anchor the bristle insert 14 in the support body 12. Accordingly, this section is referred to as anchoring section 26.
  • the bristle insert 14 can also be formed by two separate pieces of wire that are twisted together.
  • the anchoring section 26 is pushed into the receptacle 20 of the support body 12 (see Figure 1a and Figure 2a) until one end 28 of the anchoring section 26 is on the back of the retaining flange 18 from the receptacle 20 protrudes (see Figures 1b and 2b).
  • the end 28 is then bent over by means of a sonotrode 30 (see FIG. 1b) so that the end 28 lies flat on the anchoring surface 22 (see FIGS. 1b and 2b, the sonotrode being symbolized only schematically by the arrow P in FIG. 2b) .
  • the end 28 can also be bent in advance by means of a separate tool.
  • the sonotrode is then activated and pressed against the end 28 of the anchoring section 26, whereby the end 28 is pressed against the anchoring surface 22.
  • the sonotrode 30 In the activated state, the sonotrode 30 generates ultrasonic vibrations which are also transmitted to the end 28 of the anchoring section 26. This creates friction between the end 28 of the anchoring section 26 and the material of the carrier body 12. Under the effect of the supplied energy and the effect of the pressure exerted by the sonotrode (see arrow R in FIGS. 1c and 2c), the end 28 becomes of the anchoring section 26 firmly embedded in the anchoring surface 30 (see FIGS. 1d and 2d). In this state, the bristle insert 14 is reliably attached to the carrier body 12, both in the axial direction and in the circumferential direction.
  • the carrier body 12 is made of plastic, the material of the carrier body 12 is locally melted under the effect of the energy supplied by the sonotrode, so that the end 28 forms a groove 32 in the anchoring surface, into which it is pressed and melted (see FIG. 3). .
  • the end 28 can be pressed so far into the anchoring surface 22 that the end 28 does not protrude beyond the plane of the anchoring surface 22.
  • the end 28 of the anchoring section 26 burns into the anchoring surface 22 (see Figure 4), so that an intimate connection between the anchoring section 26 and the anchoring surface 22 is created here as well.
  • the anchoring surface 22 is designed to be flat, that is to say without a prefabricated groove. It is also possible to provide a groove in the anchoring surface into which the end 28 is pressed before it is then embedded there by means of the sonotrode.
  • the carrier body 12 is constructed in several parts. This enables the bristle insert 14 to be inserted into the receptacle 20 before the two or more parts of the Carrier body are attached to each other and close the recording.
  • This embodiment is particularly advantageous if the anchoring section 26 is prefabricated with an end 28 that is already bent at right angles, for example, so that the end region of the anchoring section 26 does not have to be bent over by means of the sonotrode or another tool.
  • FIG. 5 shows a brush 40 which has a bristle carrier 10 which is produced in the manner described above.
  • the brush 40 is, in particular, an interdental brush.
  • the brush 40 has a holder 42 which has a handle section 44 and a receiving section 46 for the bristle carrier 10.
  • the receiving section 46 is provided with an abutment shoulder 48 against which the anchoring surface 22 of the support body 12 can be placed, as well as a latching configuration 50 by means of which a bristle carrier 10 can be attached to the holder 42 in a detachable and easily replaceable manner.
  • the latching configuration 50 can be, for example, latching hooks that engage the socket-shaped section 16 of the carrier body 12.
  • the retaining flange 18 can be fixed between the latching hook and the contact shoulder 48 in such a way that the bristle carrier 10 is retained in the axial direction and the anchoring surface 22 on which the end 28 of the anchoring section 26 is embedded is not visible.
  • FIG. 6 shows an injection mold 60 with two mold parts 62, 64, by means of which a brush 70 (see FIG. 7) can be produced.
  • This brush is in particular an interdental brush or a mascara bust.
  • the injection mold 60 has a cavity 65 in which the retaining flange 18 of the carrier body 12 and a large part of the sleeve-shaped section 16 are arranged. Only the front section of the carrier body 12 facing the bristle section 24 extends out of the cavity 65.
  • the two molded parts 62, 64 of the injection mold 60 have sealing surfaces 66 which act on the cylindrical outside of the carrier body 12 and there seal.
  • the parting plane T of the injection mold 60 lies in the area of the sealing surfaces 66.
  • the holder 42 neatly encloses the majority of the carrier body 12 (and in particular the holding flange 18 with the end 28 of the anchoring section 26 arranged on its rear side). Only the front end of the socket-shaped section 16 of the support body 12 lies outside the holder 42 Holder 42 is formed, forms an undesirable ridge.
  • FIG. 8 shows a bristle carrier 10 according to an alternative embodiment.
  • the same reference numerals are used for the features known from the previous embodiments, and in this respect reference is made to the explanations above.
  • FIG. 8 The difference between the bristle carrier of FIG. 8 and the bristle carrier known from FIGS. 1 and 2 lies mainly in the basic shape of the carrier body.
  • a generally spherical carrier body 12 is shown, which is flattened on its rear side facing away from the bristle insert 14, so that the anchoring surface 22 is formed.
  • the flattening can also be dispensed with, so that the anchoring surface 22 is formed by the spherical rear side of the carrier body 12.
  • the carrier body 12 On the front side facing the bristle egg insert 14, the carrier body 12 is provided with a very short socket-like projection 16 which can serve as an abutment for sealing surfaces 66 of the injection mold during injection molding.
  • a variant of the embodiment of FIG. 8 is shown. The difference here is that the socket-like extension 16 is dispensed with. If the bristle egg insert 10 is to be encapsulated, the injection mold seals on the outer surface of the support body 12.

Landscapes

  • Brushes (AREA)

Abstract

L'invention concerne un support de poils (10) pour une brosse (40 ; 70), en particulier pour une brosse de produit cosmétique, une brosse de mascara ou une brosse interdentaire, le support de poils comprenant un corps de support (12) et un support de poils (14), le support de poils (14) présentant deux parties de fil torsadées ensemble, qui serrent une pluralité de poils entre elles dans une partie de poils (24) et qui forment une partie d'ancrage (26) dans une partie qui est exempte de poils, le corps de support (12) présentant une section de réception (20) pour la partie d'ancrage (26), qui s'étend à partir d'une extrémité avant dirigée vers les poils, à travers le corps de support (12) et jusqu'à une extrémité arrière qui forme une surface d'ancrage (22) pour l'extrémité (28) de la partie d'ancrage (26), ladite extrémité (28) étant incorporée dans la surface d'ancrage (22). L'invention concerne également un procédé de production d'un support de poils de ce type, une brosse comprenant un tel support de poils de ce type et un procédé de production de la brosse.
PCT/EP2021/057000 2020-03-20 2021-03-18 Support de poils, brosse et procédé de production du support de poils et de la brosse WO2021185988A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21713387.5A EP4120873A1 (fr) 2020-03-20 2021-03-18 Support de poils, brosse et procédé de production du support de poils et de la brosse
CN202180022779.5A CN115334936A (zh) 2020-03-20 2021-03-18 刷毛载体、刷子以及制造刷毛载体和刷子的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020107816.1A DE102020107816A1 (de) 2020-03-20 2020-03-20 Borstenträger, Bürste und Verfahren zur Herstellung des Borstenträgers und der Bürste
DE102020107816.1 2020-03-20

Publications (1)

Publication Number Publication Date
WO2021185988A1 true WO2021185988A1 (fr) 2021-09-23

Family

ID=75111610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/057000 WO2021185988A1 (fr) 2020-03-20 2021-03-18 Support de poils, brosse et procédé de production du support de poils et de la brosse

Country Status (5)

Country Link
EP (1) EP4120873A1 (fr)
CN (1) CN115334936A (fr)
DE (1) DE102020107816A1 (fr)
TW (1) TW202200046A (fr)
WO (1) WO2021185988A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056185A1 (fr) * 1999-03-22 2000-09-28 John O. Butler Company Dispositif d'hygiene dentaire pourvu d'un element d'hygiene dentaire pouvant etre facilement monte et identifie
EP2052695A1 (fr) * 2007-10-24 2009-04-29 Trisa Holding AG Appareil de nettoyage de interdentaire
DE102009019451A1 (de) * 2009-04-29 2010-11-04 Zahoransky Ag Verfahren und Vorrichtung zur Bearbeitung von Borstenfilamenten
WO2020089278A1 (fr) * 2018-10-31 2020-05-07 Gb Boucherie Nv Corps porteur pour un insert de crins de brosserie, brosse et procédé de fabrication d'une brosse
WO2021083874A1 (fr) * 2019-10-30 2021-05-06 Gb Boucherie Nv Corps de support pour un insert de poils, brosse et procédé de fabrication d'une brosse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000056185A1 (fr) * 1999-03-22 2000-09-28 John O. Butler Company Dispositif d'hygiene dentaire pourvu d'un element d'hygiene dentaire pouvant etre facilement monte et identifie
EP2052695A1 (fr) * 2007-10-24 2009-04-29 Trisa Holding AG Appareil de nettoyage de interdentaire
DE102009019451A1 (de) * 2009-04-29 2010-11-04 Zahoransky Ag Verfahren und Vorrichtung zur Bearbeitung von Borstenfilamenten
WO2020089278A1 (fr) * 2018-10-31 2020-05-07 Gb Boucherie Nv Corps porteur pour un insert de crins de brosserie, brosse et procédé de fabrication d'une brosse
WO2021083874A1 (fr) * 2019-10-30 2021-05-06 Gb Boucherie Nv Corps de support pour un insert de poils, brosse et procédé de fabrication d'une brosse

Also Published As

Publication number Publication date
EP4120873A1 (fr) 2023-01-25
DE102020107816A1 (de) 2021-09-23
TW202200046A (zh) 2022-01-01
CN115334936A (zh) 2022-11-11

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