EP3476244A1 - Brosse cosmétique et son procédé de fabrication - Google Patents

Brosse cosmétique et son procédé de fabrication Download PDF

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Publication number
EP3476244A1
EP3476244A1 EP16906265.0A EP16906265A EP3476244A1 EP 3476244 A1 EP3476244 A1 EP 3476244A1 EP 16906265 A EP16906265 A EP 16906265A EP 3476244 A1 EP3476244 A1 EP 3476244A1
Authority
EP
European Patent Office
Prior art keywords
cosmetic brush
bristles
tip end
applying portion
bent
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.)
Granted
Application number
EP16906265.0A
Other languages
German (de)
English (en)
Other versions
EP3476244B1 (fr
EP3476244A4 (fr
Inventor
Hironori Aso
Keigo KOYANAGI
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.)
Sinwa Corp
Original Assignee
Sinwa Corp
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 Sinwa Corp filed Critical Sinwa Corp
Publication of EP3476244A1 publication Critical patent/EP3476244A1/fr
Publication of EP3476244A4 publication Critical patent/EP3476244A4/fr
Application granted granted Critical
Publication of EP3476244B1 publication Critical patent/EP3476244B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming
    • A46D9/025—Deflecting parts of the bristle field in order to trim the rest
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/26—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball
    • A45D40/262—Appliances specially adapted for applying pasty paint, e.g. using roller, using a ball using a brush or the like
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
    • 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
    • A46D1/0253—Bristles having a shape which is not a straight line, e.g. curved, "S", hook, loop
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0276—Bristles having pointed ends
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/04—Preparing bristles
    • A46D1/05—Splitting; Pointing
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/05—Machines for inserting or fixing bristles in bodies for fixing the bristles between wires, tapes, or the like
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D9/00—Machines for finishing brushes
    • A46D9/02—Cutting; Trimming
    • 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 a cosmetic brush to be used to apply a cosmetic liquid such as a mascara, and a manufacturing method of the same.
  • a cosmetic brush 101 to be used to apply a cosmetic liquid such as a mascara is normally manufactured by pinching a number of bristles 106 between a pair of core wires 102a obtained by being folded-back, and twisting the core wires 102a. That is, the cosmetic brush 101 includes an applying portion 104 formed into a substantially columnar shape as a whole in which bristles 106 radially extend from the twisted portions of the twistedwires 102a (hereinafter, referred to as a core wire portion 102) in the circumferential direction of the twisted core wires 102, and evenly spread in a helicoidal fashion in an axial direction of the core wire portion 102.
  • the tip ends of the bristles are generally trimmed by a shearing work (Japanese Patent No. 5100985 ) .
  • the bristle tip end portions are made to swell into spherical shapes with diameters larger than the bristle diameters, so that the bristles cannot sufficiently go between thin eyelashes and cannot be tangled in eyelashes.
  • bristle tip end portions are rounded, so that bristles can easily go between eyelashes, however, when rolling up, the bristles cannot catch the eyelashes and cannot excellently apply a mascara liquid thereto.
  • an object of the present invention is to provide a cosmetic brush that meets contradictory demands to enable bristles to easily go between thin eyelashes and easily catch eyelashes when rolling up.
  • a cosmetic brush including a straight core wire portion formed of a pair of metal-made core wires helically twisted together, and an applying portion in a substantially columnar shape having a number of bristles that are pinched by the twisted portions of the core wires and spread radially and continued in a helicoidal fashion in an axial direction, wherein tip end portions of the bristles constituting the applying portion are uniformly bent at a predetermined angle forward or rearward in the axial direction of the core wire portion, and are tapered toward tip ends.
  • tip end portions of the bristles are tapered toward tip ends, and further, uniformly bent at substantially the same angle in substantially the same direction, so that bristles easily go between thin eyelashes.
  • the bristle tip end portions are bent forward or rearward in an axial direction of the core wire portion, so that when rolling up, the bent inside portions easily catch eyelashes. Further, the bristle tip ends are thin, so that a mascara liquid or the like applied onto eyelashes are excellently spread.
  • each of the bristles is provided with a ground surface on a side surface opposite the bent portion, and tapered toward the tip end.
  • a bending angle of each bristle is kept large so that the bristle can be easily tangled in eyelashes.
  • Claim 3 provided is the cosmetic brush according to Claim 1 or 2, wherein the applying portion has a truncated cone shape, an inverted truncated cone shape, or a columnar shape, and tip end portions of all bristles constituting the applying portion are bent and tapered toward tip ends.
  • Tip ends of all bristles constituting the applying portion are bent and tapered toward tip ends, so that the cosmetic brush can be used in a wide range and is convenient for use.
  • Claim 4 provided is the cosmetic brush according to Claim 1 or 2, wherein a reduced-diameter portion is provided on a tip end side of the applying portion, and tip end portions of all bristles constituting an applying portion region except for the reduced-diameter portion are bent and tapered toward tip ends.
  • a mascara liquid or the like can be applied onto eyelashes with the machined bristles on the applying portion rear end side, and eyelashes can be set with the bristles not machined on the applying portion tip end like a comb.
  • a manufacturing method of a cosmetic brush including a forming step of forming a cosmetic brush before main machining including a straight core wire portion formed of a pair of core wires and a substantially columnar applying portion having bristles spread radially from twisted portions of the core wires and continued in a helicoidal fashion by pinching a number of bristles with predetermined lengths arranged in parallel in the form of a belt by the pair of metal core wires and helically twisting the core wires, a trimming step of forming an external shape of the applying portion by trimming tip ends of the bristles constituting the applying portion, and a grinding step of machining tip end portions of the bristles constituting the applying portion into predetermined shapes by grinding the tip end portions, wherein in the grinding step, the cosmetic brush before main machining is held on a flat grinding surface of a disk-shaped grind stone so that the core wire portion of the cosmetic brush before main machining is orthogonal to a radial direction of the grind stone, and while
  • the bristle tip end portions By pressing the bristle tip end portions against the rotating disk-shaped grind stone, the bristle tip end portions are ground and thinned. Simultaneously, the bristle tip end portions are bent in a rotating direction of the disk-shaped grind stone at a portion heated to near a melting point by frictional heat (abrasive heat) .
  • frictional heat abrasive heat
  • Portions of the bristles to be ground by the disk-shaped grind stone are only bristle tip ends at a predetermined position in the circumferential direction of the applying portion in contact with the grinding surface, however, the cosmetic brush itself before main machining rotates, and the bristles in contact with the grinding surface are successively shifted, so that without moving the cosmetic brush or the disk-shaped grind stone, the tip ends of all bristles can be uniformly machined. That is, by one process, all bristle tip end portions constituting the applying portion can be simultaneously ground and bent.
  • Claim 6 provided is the manufacturing method of a cosmetic brush according to Claim 5, wherein in the trimming step, the external shape of the applying portion is formed into a truncated cone shape or an inverted truncated cone shape, and in the grinding step, while the cosmetic brush before main machining is rotated around its central axis, the cosmetic brush is inclined so that a ridge line of the truncated cone shape or inverted truncated cone shape of the applying portion becomes parallel to the grinding surface of the rotating disk-shaped grind stone, and a side surface of the applying portion is relatively pressed against the grinding surface.
  • the same machining can also be applied to the applying portion in the truncated cone shape or the inverted truncated cone shape with an inclined surface.
  • each bristle easily goes between one eyelash and another, and the applying portion is easily tangled in eyelashes, and thereby, a catch feeling is improved.
  • a cosmetic brush including an applying portion formed of bristles that are uniformly bent at a predetermined angle forward or rearward in the axial direction of the core wire portion and tapered toward tip ends can be easily manufactured at low cost.
  • Fig. 1 is a schematic view of a cosmetic brush according to a first embodiment of the present invention.
  • a cosmetic brush 1 according to a first embodiment of the present invention includes an applying portion 4 formed into a substantially columnar shape as a whole in which bristles 6 pinched by the core wire portion 2 extend evenly radially in the circumferential direction of the core wire portion 2 from twistedportions of twisted core wires 2a (hereinafter, referred to as a core wire portion 2), and spread in a helicoidal fashion in an axial direction of the core wire portion 2.
  • the cosmetic brush 1 is characterized in that bristle bent tip end portions 8a on tip ends of the bristles 6 constituting the applying portion 4 are tapered toward tip ends and bent.
  • the bending direction is forward or rearward in the axial direction of the core wire portion 2, and the bristle bent tip end portions 8a are uniformly bent at substantially the same angle in substantially the same direction. It does not matter whether the bending direction is forward or rearward as long as the bristle bent tip end portions are uniformly bent in the same bending direction.
  • Fig. 2 is an enlarged view of bristles 6 of a cosmetic brush 1.
  • Fig. 3 is an enlarged view of bristles 6b for comparison, which does not have the bristle bent tip end portions 8a as a feature of the first embodiment, and are constant in thickness to tip ends and are not bent.
  • a distance D between tip end portions of the bristles 6 is longer than a distance Db between tip end portions of the bristles 6b, and tip ends of the bristles 6 are tapered toward tips, so that eyelashes easily go between the bristles 6, and the bristles 6 can be tangled in more eyelashes. Accordingly, the catch feeling is improved.
  • the bending direction is substantially parallel to the axis of the core wire portion 2, so that when rolling-up the cosmetic brush, eyelashes are caught by the bent portion inside portions 11, and a mascara liquid can be accordingly sufficiently applied as far as the tip ends of the eyelashes.
  • the distance between the bristles is reduced, and by this reduction, it is made difficult for eyelashes that have gone between the bristles to come out, and further, eyelashes that try to come out from the portions between the bristles are caught by the bent portion inside portions 11. Accordingly, the eyelashes can be kept between the bristles, so that a mascara liquid can be applied as far as the tip ends of the eyelashes, and the rolling-up feeling is improved.
  • eyelashes when rolling-up, eyelashes can be held at the bent portion inside portions 11, so that an effect as an eyelash curler can also be expected. Since the tip ends of the bristles are thin, a mascara liquid or the like applied onto eyelashes are excellently spread. A mascara liquid or the like applied onto eyelashes is excellently spread, and an effect of preventing clumps and bunching is obtained.
  • the cosmetic brush 1 has a handle attached to a rear end of the core wire portion 2, and is used as an applicator in combination with a container containing a cosmetic liquid such as a mascara.
  • the bending angle of the bristle bent tip end portions 8a when a bending angle in a straight state is defined as 0 degrees, if the bending angle is excessively small, eyelash catching strength is weak, and if the bending angle is excessively large, it becomes difficult for the bristles to go between eyelashes .
  • the bending angle is particularly preferably set to 25 to 35 degrees.
  • bristle bent tip end portions 8a are described in greater detail.
  • Fig. 4 is a bristle enlarged view to describe effects of the present embodiment.
  • the bristle bent tip end portions 8a of the bristles 6 according to the present embodiment are provided with ground surfaces 10 on side surfaces opposite the bending direction, and tapered toward tip ends.
  • the reference symbol 6 denotes a bristle 6 according to the present embodiment
  • the reference symbols 6c and 6d denote a bristle 6c provided with a ground surface 10 on a side surface in the same direction as the bending direction, and a bristle 6d provided with ground surfaces on both side surfaces.
  • the bristle 6 of the present embodiment keeps a large bending angle so as to be easily tangled in eyelashes as compared with the bristle 6c and the bristle 6d. Accordingly, the catch feeling can be kept high.
  • Fig. 5 is a schematic view of a cosmetic brush 14 according to the second embodiment.
  • the applying portion 4 of the cosmetic brush 14 has a truncated cone shape.
  • the bristle bent tip end portions 8a of all bristles 6 constituting the applying portion are bent, and tapered toward tip ends.
  • the cosmetic brush can be used in a wide range, and is highly convenient for use, and improved in feeling of use.
  • the applying portion 4 has a truncated cone shape, however, it may have an inverted truncated cone shape or a columnar shape.
  • Fig. 6 is a schematic view of a cosmetic brush 15 according to the third embodiment of the present invention.
  • the cosmetic brush 15 is characterized in that a reduced-diameter portion 21 is provided on a tip end of its applying portion 4.
  • the applying portion 4 includes the reduced-diameter portion 21 and a base end portion 20.
  • the configuration in which bristle bent tip end portions 8a on tip ends of the bristles 6 constituting the base end portion 20 are tapered toward tip ends and bent is the same as in the embodiments described above .
  • a diameter of the reduced-diameter portion 21 is smaller than a diameter of the base end portion 20, and the bristle tip end portion 8 of the bristle 6 constituting the reduced-diameter portion is constant in thickness to its tip end and straight to its tip end.
  • the reduced-diameter portion 21 is reduced in diameter toward its tip end.
  • the applying portion 4 has a bullet shape including a reduced-diameter portion 21 whose diameter is reduced and a base end portion 20 having a columnar shape.
  • a mascara liquid or the like can be applied onto eyelashes as in the case of using the cosmetic brush of the embodiment described above, and with bristles provided straight to the tip end of the reduced-diameter portion 21, eyelashes can be set up as in the case of using a comb.
  • This cosmetic brush is multi-functional and improved in convenience for use.
  • Fig. 7 to Fig. 9 are schematic views of cosmetic brushes of modifications, and the reference symbols 16 to 18 denote cosmetic brushes of modifications.
  • the diameter of the reduced-diameter portion 21 of the applying portion 4 is required to be smaller than the diameter of the base end portion 20.
  • the shape of the reduced-diameter portion 21 may be a columnar shape with a diameter smaller than the diameter of the base end portion 20.
  • the shape of the reduced-diameter portion 21 may be a truncated cone shape.
  • the shape of the base end portion may be a truncated cone shape.
  • the reduced-diameter portion may have a shape with two tiers, and the base end portion has a truncated cone shape or an inverted truncated cone shape so that its tip end portion is reduced in diameter toward the tip end.
  • the diameter of the reduced-diameter portion is required to be smaller than a diameter of an upper surface of the inverted truncated cone shape.
  • Fig. 10 is an explanatory view to describe a manufacturing process
  • Fig. 11 is a schematic view of a cosmetic brush 1a before main machining
  • Fig. 12 is a plan view of a rotating disk-shaped grind stone 30 to describe machining of bristle tip end portions 8
  • Fig. 13 is an enlarged view of Fig. 12 viewed from the front side.
  • Fig. 14 is a tip end enlarged view of bristles 6 after grinding and bending.
  • the bristles 6 are cut into the same length and pinched between a pair of core wires 2a, and the core wires 2a are twisted to fix the bristles 6, and accordingly, the core wire portion 2 and the applying portion 4 are formed. Thereafter, the bristle tip end portions 8 are sheared so that the applying portion 4 is formed into a substantially columnar shape. So far, the method is the same as the conventional method. The cosmetic brush 1a before main machining is accordingly completed.
  • the bristle tip end portions 8 of the cosmetic brush 1a before main machining are machined with a rotating disk-shaped grind stone 30.
  • the rotation axis Y of the disk-shaped grind stone Y is orthogonal to an axial direction of the core wire portion 2 of the cosmetic brush 1a before main machining in a front side view.
  • the cosmetic brush 1a before main machining is held so that the axial direction of the core wire portion 2 is orthogonal to a radial direction R of the disk-shaped grind stone 30 (parallel to a tangential direction of the disk-shaped grind stone 30).
  • the applying portion 4 While the cosmetic brush 1a before main machining is rotated around its central axis X, the applying portion 4 is relatively pressed against a flat grinding surface 31 of the grind stone.
  • the central axis X matches the axial direction of the core wire portion 2.
  • the applying portion 4 in contact with the grinding surface 31 of the grind stone, that is, the bristle tip end portions 8 are pressed and accordingly ground and thinned.
  • the bristle tip end portions 8 are heated to near a melting point by frictional heat (abrasive heat), and by a force applied from the grinding surface 31, the bristle tip end portions 8 are bent in a rotating direction of the disk-shaped grind stone 30.
  • the bristle bent tip end portions 8a are thus formed.
  • the axial direction of the core wire portion 2 of the cosmetic brush 1a before main machining is orthogonal to the radial direction R of the disk-shaped grind stone 30 (parallel to a tangential direction of the disk-shaped grind stone 30), and the axial direction of the core wire portion 2 and the direction of the force are almost parallel to each other, and the bristle tip end portions 8 are uniformly bent in substantially the same direction forward or rearward in the axial direction of the core wire portion 2.
  • the rotating direction of the disk-shaped grind stone 30 must be one direction although it does not matter whether the rotating direction is counterclockwise or clockwise. That is, the bristle bent tip end portions 8 are uniformly bent in the same direction although it does not matter whether the bending direction of the bristle bent tip end portions 8a is forward or rearward in the axial direction of the core wire portion 2.
  • ground portions 9 on either front or rear side surfaces of the bristle tip end portions 8 of the bristles 6 in the axial direction of the core wire portion 2 are ground and tapered by the disk-shaped grind stone 30, and ground surfaces 10 are accordingly formed.
  • the bristle tip end portions 8 are bent in a direction opposite the ground surfaces 10, and the bristle bent tip end portions 8a are accordingly formed.
  • the bristle bent tip end portions 8a are tapered toward tip ends.
  • the bristles 6 to be ground by the disk-shaped grind stone 30 are only bristles 6 at a predetermined position in the circumferential direction of the applying portion 4 in contact with the grinding surface 31, however, the cosmetic brush 1a itself before main machining rotates around the central axis X, so that bristles in contact with the grinding surface 31 are successively shifted, and without moving the cosmetic brush 1a before main machining and the disk-shaped grind stone 30, the side surface of the applying portion 4 in contact with the grinding surface 31, that is, the bristle tip end portions 8 can be uniformly machined by one process.
  • the rotation around the central axis X of the cosmetic brush 1a before main machining is for shifting the portion to be machined, and it does not matter whether the rotating direction is clockwise or counterclockwise around the axis. It is also possible that the cosmetic brush is rotated clockwise and then rotated counterclockwise.
  • an influence of the rotation of the cosmetic brush on bending and grinding in the circumferential direction becomes slight, and the bristle bent tip end portions 8a are formed by being ground and bent in the axial direction of the core wire portion 2 mainly by rotation of the disk-shaped ground stone 30.
  • Fig. 15 shows an example of holding positions of the cosmetic brushes 1a before main machining.
  • a position at which the cosmetic brush 1a before machining is held may be any position on the grinding surface 31 of the disk-shaped grind stone 30 as long as the axial direction of the core wire portion 2 is orthogonal to the radial direction R of the disk-shaped grind stone 20 (parallel to a tangential direction of the disk-shaped grind stone 30) . It is also possible that a plurality of cosmetic brushes are held at even intervals in the circumferential direction of the disk-shaped grind stone and machined (in Fig.
  • the bristle tip end portions 8 constituting the applying portion 4 can be simultaneously ground and bent by one process, so that the number of processes is small and the machining time is short.
  • a cosmetic brush with ground and bent tip end portions can be efficiently and easily manufactured at low cost.
  • Fig. 16 to Fig. 18 are schematic views of modifications.
  • the reference symbols 15a to 17a denote cosmetic brushes before main machining.
  • the applying portion 4 is formed in the same manner as in the embodiment described above. At this time, as shown in Fig. 16 , the applying portion 4 is formed into a bullet shape by a shearing work.
  • the applying portion 4 includes a reduced-diameter portion 21 reduced in diameter and a base end portion 20 having a columnar shape, and a diameter of the reduced-diameter portion 21 is smaller than a diameter of the base end portion 20a, and the reduced-diameter portion 21 is reduced in diameter toward its tip end.
  • the cosmetic brush 15a before main machining, including the reduced-diameter portion 21, is completed.
  • This applying portion 4 is relatively pressed against the grinding surface 31 of the disk-shaped grind stone 30.
  • the diameter of the reduced-diameter portion 21 is smaller than the diameter of the base end portion 20a, so that the reduced-diameter portion 21 does not come into contact with the grinding surface 31. Therefore, only bristles 6 of the base end portion 20a except for the reduced-diameter portion are bent and ground, and accordingly, bristle bent tip end portions 8a are formed.
  • the reduced-diameter portion 21 may have any shape as long as the diameter thereof is smaller than the diameter of the base end portion 20a. As shown in Fig. 17 and Fig. 18 , the reduced-diameter portion 21 may have a columnar shape or a truncated cone shape. The same machining as described above can be applied to the base end portion 20a of the applying portion 4 including the reduced-diameter portion 21. The reduced-diameter portion 21 not machined serves as a comb.
  • Fig. 19 is a schematic view of the cosmetic brush 14a before main machining according to the present embodiment
  • Fig. 20 is a plan view of a rotating disk-shaped grind stone 30 to describe machining of bristle tip end portions 8 of the present embodiment
  • Fig. 21 is an enlarged view of Fig. 20 viewed from the front side.
  • Fig. 23 is an explanatory view of holding positions of the cosmetic brushes before main machining.
  • Fig. 23 is a schematic view of the cosmetic brush before main machining.
  • the applying portion 4 is formed of bristles 6 and the core wires 2a in the same manner as in the embodiment described above. Thereafter, as shown in Fig. 19 , the applying portion 4 is subjected to a shearing work so as to have a substantially truncated cone shape. Accordingly, a cosmetic brush 14a before main machining including the applying portion 4 that has a substantially truncated cone shape is completed. An inclination angle of the substantially truncated cone shape of the applying portion 4 is ⁇ .
  • bristle tip end portions 8 of the cosmetic brush 14a before main machining are machined with a rotating disk-shaped grind stone 30.
  • the cosmetic brush 14a before main machining is held so that an axial direction of the core wire portion 2 is orthogonal to a radial direction R of the disk-shaped grind stone 30 (parallel to a tangential direction of the disk-shaped grind stone 30).
  • the cosmetic brush 14a before main machining is inclined by the inclination angle ⁇ so that a ridge line of the truncated cone shape of the applying portion 4 becomes parallel to the grinding surface 31 of the rotating disk-shaped grind stone 30.
  • the applying portion 4 While the cosmetic brush 14a before main machining is rotated around its central axis X, the applying portion 4 is relatively pressed against the flat grinding surface 31 of the grind stone.
  • the applying portion 4 in contact with the grinding surface 31 of the grind stone, that is, bristle tip end portions 8 are ground and thinned by being pressed.
  • the holding position of the cosmetic brush 19a before main machining is not limited as long as the cosmetic brush is held orthogonal to the radial direction R of the disk-shaped grind stone 30, and as shown in Fig. 23 , a plurality of cosmetic brushes may be disposed in the circumferential direction or a plurality of cosmetic brushes may be arranged parallel to each other.
  • the same machining can also be applied to the cosmetic brush 18a before main machining including the reduced-diameter portion 21.
  • bristle bent tip end portions 8a are formed only on the base end portion 20a.
  • the same machining of bending and grinding can also be applied to the applying portion 4 in a substantially truncated cone shape having an inclination angle ⁇ , and variations on the shape of the applying portion to which the same machining can be applied increase.
  • the applying portion 4 having a substantially truncated cone shape is machined, and the same machining can also be applied to an applying portion 4 having a substantially inverted truncated cone shape.
  • the same machining can also be applied to an applying portion 4 including a reduced-diameter portion and a base end portion 20a that has an inverted truncated cone shape. In this case, it is required that a diameter of the reduced-diameter portion 21 is smaller than a diameter of an upper surface of the base end portion 20a having the inverted truncated cone shape.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)
EP16906265.0A 2016-06-22 2016-06-22 Procédé de fabrication d'une brosse cosmétique Active EP3476244B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/068515 WO2017221348A1 (fr) 2016-06-22 2016-06-22 Brosse cosmétique et son procédé de fabrication

Publications (3)

Publication Number Publication Date
EP3476244A1 true EP3476244A1 (fr) 2019-05-01
EP3476244A4 EP3476244A4 (fr) 2019-12-25
EP3476244B1 EP3476244B1 (fr) 2023-04-12

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EP16906265.0A Active EP3476244B1 (fr) 2016-06-22 2016-06-22 Procédé de fabrication d'une brosse cosmétique

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US (1) US20190159576A1 (fr)
EP (1) EP3476244B1 (fr)
JP (1) JP6791847B2 (fr)
WO (1) WO2017221348A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115644589A (zh) * 2022-10-10 2023-01-31 杭州伊珂包装科技有限公司 一种符合人体工学的眉笔刷头及其生产工艺

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FR2637471B1 (fr) * 1988-10-12 1992-10-30 Oreal Brosse pour appliquer un produit de maquillage, et procede de fabrication d'une telle brosse
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JPH0651010B2 (ja) 1989-12-08 1994-07-06 株式会社新和製作所 化粧用ブラシのブリッスル先端加工方法及び装置
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JP2001299455A (ja) * 2000-04-21 2001-10-30 Taihei Kogyo Kk 歯間ブラシおよびその製造方法
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CN115644589A (zh) * 2022-10-10 2023-01-31 杭州伊珂包装科技有限公司 一种符合人体工学的眉笔刷头及其生产工艺

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JPWO2017221348A1 (ja) 2019-04-11
US20190159576A1 (en) 2019-05-30
WO2017221348A1 (fr) 2017-12-28
EP3476244A4 (fr) 2019-12-25
JP6791847B2 (ja) 2020-11-25

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