EP3123896A1 - Brush for cosmetics - Google Patents
Brush for cosmetics Download PDFInfo
- Publication number
- EP3123896A1 EP3123896A1 EP14887510.7A EP14887510A EP3123896A1 EP 3123896 A1 EP3123896 A1 EP 3123896A1 EP 14887510 A EP14887510 A EP 14887510A EP 3123896 A1 EP3123896 A1 EP 3123896A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bristles
- core wires
- brush
- twisted
- cosmetic
- 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.)
- Withdrawn
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Classifications
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- 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
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- 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
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- 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
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- 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 present invention relates to a cosmetic brush, and in particular, to a cosmetic brush provided with a brush portion formed of core wires twisted to hold therebetween a plurality of bristles.
- a brush portion 10 of a cosmetic brush 1 includes two core wires 3 each having a circular cross section, a bristles 5 inserted between the two core wires 3 twisted to pinch central portions of the bristles 5 therebetween, thereby, the bristles 5 extend from the twisted portions 4 of the core wires 3, randomly with respect to the brush portion axial direction P, successively helicoidal fashion with respect to the brush portion radial direction R along to the twisted portions 4 of the core wires 3, so that the entire shape of the brush 1 has a generally columnar shape.
- Fig. 8(c) is a brief schematic view with neglect of the bristles 5 expand in the direction perpendicular to the figure.
- Patent Literature 1 a cosmetic brush provided with gaps of bristles by thinning out the bristles that expand randomly in the brush portion axial direction is known.
- Patent Literature 2 by using core wires each having a circular cross section and twisting the core wires while pinching end portions of the bristles instead of central portions of the bristles, the bristles extend from every other twisted portions of the core wires, and the gaps of the bristles are formed.
- Patent Literature 2 in a general type cosmetic brush whose core wire has a circular cross section as described above, an extra coil spring member is fittingly added to the brush portion in a post-process for changing directions of the bristles, and providing the gaps of the bristles.
- the bristles appear from every other twisted portion, so that a volume of the bristles is small. Moreover, since gaps of the bristles in the brush portion axial direction are too wide, an amount of cosmetic liquid pooled in the gaps increases, which results in solid chunks of the cosmetic liquid adhering to eyelashes. In the cosmetic brush of Patent Literature 2, the extra member is needed, so that the number of brush components and working man hours for manufacture are increased.
- the present invention has been made to solve the above-described problems in conventional technologies, and an object thereof is to provide a cosmetic brush that is provided with gaps in between groups of bristles in the brush portion axial direction, with an appropriate pool-amount of cosmetic liquid, without any extra members.
- a cosmetic brush in order to solve the problems described above, in a mode of the present invention, includes a brush portion formed of deformed core wires each having a non-circular cross section, the deformed core wires twisted to hold therebetween a plurality of bristles, wherein the bristles extend from twisted portions of the deformed core wires and split into two parts with respect to the brush portion axial direction.
- the brush portion has the twisted portions adjacent to each other in the brush portion axial direction, and bristles extending from the twisted portion toward another neighboring twisted portion are in contact with bristles extending from the another twisted portion toward the one twisted portion.
- a cosmetic brush in another mode of the present invention, includes a brush portion formed of core wires that are twisted to hold therebetween a plurality of bristles, wherein the core wires are deformed core wires each having a non-circular cross section, and a pitch of twisted portions of the deformed core wire is formed wider in comparison with a pitch of twisted portions of core wires of which each cross section has a circular shape having the same wire diameter or the same cross-sectional area of the deformed core wires.
- its core wires are made up of deformed core wires each having a non-circular cross section, bristles that extend from twisted portions of the deformed core wires split into two parts in the brush portion axial direction. Therefore, a space formed between the split bristles becomes a gap of the bristles, so that gaps of the bristles can be formed in the brush portion axial direction.
- the bristles extend from respective helically twisted portions of the deformed core wires, so that the volume of the bristles portion is substantially the same as that of a conventional cosmetic brush. Moreover, the inventive cosmetic brush does not need any extra members for forming gaps of the bristles.
- the inventive cosmetic brush is formed of deformed core wires and formed by a manufacturing process similar to that of a conventional cosmetic brush, so that the number of brush members and working man hours are maintained.
- the inventive cosmetic brush When the inventive cosmetic brush is used to apply a cosmetic liquid such as a mascara liquid to eyelashes, the eyelashes are gathered and applied the cosmetic liquid in bundle in the successive gaps of the bristles distributed at a constant pitch in the brush portion axial direction, so that the eyelashes are finished in a well-bundled manner. Furthermore, when moving the cosmetic brush from the roots to the tips of eyelashes, the bristles act as a comb, so that long eyelashes keeping the well-bundled manner over the whole positions can be obtained.
- a cosmetic liquid such as a mascara liquid
- each group of the bristles split into two parts, bristles that extend from the twisted portion toward the another neighboring twisted portion are in contact with bristles from the another twisted portion toward the one twisted portion.
- Such contact portions of the bristles fit eyelashes well in applying a cosmetic finely to every detail of eyelashes.
- the deformed core wires each has a non-circular cross section
- twisted portions of the deformed core wires have a preferable inclination and a larger pitch in the brush portion axial direction than a pitch of twisted portions of core wires each having a circular cross section of the same diameter or of the same cross-sectional area of the deformed core wires. Therefore, bristles that extend from the twisted portions of the deformed core wires can be spread in the brush portion axial direction in comparison with that of the core wires having the circular cross section described above.
- a larger liquid-pool space of the brush portion is provided in the brush portion, which can contain a larger amount of cosmetic liquid in comparison with a brush portion of core wires having a circular cross section.
- Fig. 1 is a side view of a cosmetic brush according to a first example of the present invention
- Fig. 2 is an illustration showing a method for preparing the cosmetic brush
- Fig. 3(a) is a partial enlarged view of a side surface of the cosmetic brush
- Fig. 3(b) is a cross-sectional view of Fig. 3(a)
- Fig. 3(c) is a brief schematic view of Fig. 3(a) .
- a cosmetic brush 1 of the first example includes, as shown in Fig. 1 , a cap 2 capable of being screwed to a mouth portion of a cosmetic container not shown, and a brush portion 10 fixed to the cap 2.
- a tubular flexible member is provided for scrapping off a cosmetic liquid 12 such as a mascara liquid excessively adhered to the brush portion 10 when the brush portion 10 is pulled out from the container.
- the cosmetic brush 1 is formed by, as shown in Fig. 2 , inserting a number of bristles 5 perpendicularly between two deformed core wires 3i and 3i in the same manner as a conventional method and pinching central portions of the bristles 5, and twisting the core wires together in an arbitrary direction.
- the two deformed core wires 3i may be formed by folding one deformed core wire 3i in half or using two deformed core wires 3. The deformed core wires 3i will be described in detail later.
- the cosmetic brush 1 has a form of the bristles 5 as shown in Fig. 3(a) to Fig. 3(c) . That is, from a twisted portion 4 of the deformed core wires 3i and 3i, the bristles 5 are split into two parts with respect to a brush portion axial direction P (that is, split into two upper and lower parts in the drawing) and extend, and spread successively in a helicoidal fashion along the twisted portion 4 of the deformed core wires 3i with respect to a brush portion radial direction R (Particularly refer to Fig. 3(a) . In Fig.
- Fig. 4 is a schematic view to describe a state of the bristles 5 of the cosmetic brush 1. It is assumed that, since the cosmetic brush 1 uses deformed core wires 3i as a core material, the bristles 5 sandwiched between the wires extend while being subjected to predetermined binding forces from the deformed core wires 3i, and accordingly, the bristles are split into two parts.
- the deformed core wire 3i has "surfaces" in the peripheral direction, so that when the deformed core wires 3i and 3i are twisted together, "surfaces" of the deformed core wires 3i appear at the twisted portion 4.
- the bristles 5 extend in contact with the surfaces of the deformed core wires 3i, so that the extending directions of the bristles are determined according to the contact surface (if the core wires 3 are circular, such surfaces do not exist, so that the bristles extend randomly).
- bristles 5 subjected to a binding force of the deformed core wire 3iB positioned on the lower side come into contact with a twisted surface 3ib and are directed so as to extend upward
- bristles 5 subjected to a binding force of the deformed core wire 3iA positioned on the upper side come into contact with a twisted surface 3ia and are directed so as to extend downward.
- bristles 5 are split into two parts with respect to the brush portion axial direction P from the twisted portions 4.
- Fig. 5 shows examples of the deformed core wires.
- the deformed core wire 3i has, as shown in Fig. 5 , a cross section having a quadrangular shape such as a shape of a square, a parallelogram, a rectangle, a diamond, or a trapezoid, or a non-circular shape such as a shape of a triangle, a pentagon, or a hexagon, that is, a cross sectional shape that causes surfaces to appear at the twisted portions 4.
- Fig. 5 shows an example of the deformed core wires 3i, and includes variations in which corners of the shown shapes are rounded or some sides are curved.
- the deformed core wires 3i more preferably have a cross-sectional shape far from a circular cross-sectional shape.
- the deformed core wires preferably have a rectangular cross section.
- Fig. 6 is an illustration to describe use of the cosmetic brush 1.
- a cosmetic liquid 12 is retained by the respective bristles 5 and in the gaps 6 of the bristles (shown by the dashed lines).
- the cosmetic liquid 12 is applied in a state where a plurality of eyelashes 11 are bundled, so that eyelashes 11 can be finished in a well-bundled manner.
- the crest portions 7 of the bristles act as a comb, so that long eyelashes 11 keeping the well-bundled manner over the whole positions can be obtained.
- a liquid-pool space of the cosmetic brush 1 is mainly formed of the respective bristles 5 to which the liquid is adhered and gaps 6 of the bristles split into two parts, so that an amount of the cosmetic liquid 12 retained by the cosmetic brush 1 according to the present example is larger than that retained by the conventional cosmetic brush shown in Figs. 8 .
- the bristles 5 are split into two parts, so that the deformed core wires 3i are not exposed, and troubles in which the cosmetic liquid 12 remains around the deformed core wires 3i and causes excessive application of the cosmetic liquid 12 and results in chunks of the cosmetic liquid 12, or the cosmetic liquid 12 remaining on the deformed core wires 3i are solidified as time passes and becomes dust, are reduced.
- Fig. 7(a) is a brief schematic view of a side surface of a cosmetic brush according to a second example of the present invention
- Fig. 7 (b) is a cross-sectional view of Fig. 7 (a) .
- a cosmetic brush 1 according to a second example uses deformed core wires 3i in the same manner as in the first example, and a length of bristles 5 sandwiched by the deformed core wires 3i and 3i are designed to a predetermined length so that contact portions 8 of the bristles are formed.
- Components common to those in the first example are designated by the same reference symbols, and description thereof is omitted.
- description of bristles extending toward the front side of the drawing of bristles 5 spread in a helicoidal fashion from twisted portions 4A and 4B is omitted.
- the brush portion 10 according to the second example is formed so that bristles 5d extending from one twisted portion 4A to the other twisted portion 4B, the twisted portions 4A and 4B adjacent to each other in the brush portion axial direction P, and bristles 5u extending from the other twisted portion 4B to the one twisted portion 4A, cross each other.
- eyelashes 11 tangle well in the contact portions 8 of the bristles, so that a detailed work to apply a cosmetic liquid to portions such as eyelashes at the inner corner and the tail of the eyes to which a cosmetic liquid is not easily applied can be performed.
- the degree of contact of the bristles with the contact portions 8 is not limited to crossing as in the case of the present example, but may make contact with only tip end portions of the bristles 5 or crossing of the central portions or base end portions of the bristles 5.
- the degree of contact can be arbitrarily changed to these variations by adjusting the lengths of the bristles 5.
- the contact portions 8 of the bristles may be formed at a part of the brush portion 10. That is, depending on the form of the brush portion 10, contact portions and non-contact portions may be mixed.
- the bristles 5 to be adopted in the first and second examples described above may be fibers of a synthetic resin, animal or plant hairs, etc., and solid and hollow fibers and variations of cross-sectional shapes of the fibers may also be used.
- soft fibers are used.
- unstretched synthetic fibers produced without a stretching step after an extruding step in a bristle manufacturing process are used. Details of the unstretched fibers are not described here since they are described in Japanese Patent No. 5100985 .
- the unstretched fibers low in rigidity are preferably used since binding forces from the deformed core wires 3i are easily reflected in the fibers when they are sandwiched by the deformed core wires 3i and 3i and twisted.
- the cosmetic brush 1 is described as a cosmetic brush to apply a mascara liquid, however, it can also be applied to other cosmetic liquids.
- Figs. 9 are diagrams comparing a mode obtained by using the deformed core wires and modes obtained by using core wires each having circular cross section.
- Fig. 9 (a) shows a cosmetic brush using core wires each having a wire diameter "d” of 0. 8 mm and a precise circular cross section
- Fig. 9 (b) shows a cosmetic brush using deformed core wires 3i each having a wire diameter "d” of 0.8 mm and a square cross section
- Fig. 9(c) shows a cosmetic brush using core wires each having a wire diameter "d” of 0.9 mm and a precise circular cross section.
- drawings at the upper stage are photographs showing comparison among the brush portions
- drawings at the middle stage are cross-sectional views of the core wires (perpendicular to the brush portion axial direction)
- drawings at the lower stage are schematic views of twisted portions of the core wires.
- the alternate long and short dash lines shown in the drawings are auxiliary lines.
- the brush portion 10b is obtained by using the deformed core wires 3i
- the brush portion 10a is obtained by using core wires each having a circular cross section and the same wire diameter "d" as the deformed core wires 3i
- the brush portion 10c is obtained by using core wires each having a circular cross section and substantially the same cross-sectional area A as the deformed core wire 3i.
- the brush portion 10b uses deformed core wires 3i each having a non-circular cross section as core wires, the bristles 5 are more easily distributed in the brush portion axial direction P than the bristles of the brush portion 10a or the brush portion 10c.
- the bristles 5 are more widely distributed in the brush portion axial direction P than the bristles in the brush portion 10a or brush portion 10c, and accordingly, a larger liquid-pool space of the brush portion 10b is provided, which can contain a larger amount of cosmetic liquid.
- core wires with a thick wire diameter could only be selected, however, even if the wire diameter is the same, the pitch of the twisted portions 4 of the core wires can be increased by using the deformed core wires 3i as core wires.
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Abstract
Description
- The present invention relates to a cosmetic brush, and in particular, to a cosmetic brush provided with a brush portion formed of core wires twisted to hold therebetween a plurality of bristles.
- As shown in
Fig. 8 (a), (b), and (c) , abrush portion 10 of acosmetic brush 1 includes twocore wires 3 each having a circular cross section, abristles 5 inserted between the twocore wires 3 twisted to pinch central portions of thebristles 5 therebetween, thereby, thebristles 5 extend from thetwisted portions 4 of thecore wires 3, randomly with respect to the brush portion axial direction P, successively helicoidal fashion with respect to the brush portion radial direction R along to thetwisted portions 4 of thecore wires 3, so that the entire shape of thebrush 1 has a generally columnar shape. (Fig. 8(c) is a brief schematic view with neglect of thebristles 5 expand in the direction perpendicular to the figure.) - On the other hand, a cosmetic brush provided with gaps of bristles by thinning out the bristles that expand randomly in the brush portion axial direction is known. In
Patent Literature 1, by using core wires each having a circular cross section and twisting the core wires while pinching end portions of the bristles instead of central portions of the bristles, the bristles extend from every other twisted portions of the core wires, and the gaps of the bristles are formed. InPatent Literature 2, in a general type cosmetic brush whose core wire has a circular cross section as described above, an extra coil spring member is fittingly added to the brush portion in a post-process for changing directions of the bristles, and providing the gaps of the bristles. -
- Patent Literature 1:
JPU 48-114656 - Patent Literature 2:
JPA 2010-69022 - However, in the cosmetic brush of
Patent Literature 1, the bristles appear from every other twisted portion, so that a volume of the bristles is small. Moreover, since gaps of the bristles in the brush portion axial direction are too wide, an amount of cosmetic liquid pooled in the gaps increases, which results in solid chunks of the cosmetic liquid adhering to eyelashes. In the cosmetic brush ofPatent Literature 2, the extra member is needed, so that the number of brush components and working man hours for manufacture are increased. - The present invention has been made to solve the above-described problems in conventional technologies, and an object thereof is to provide a cosmetic brush that is provided with gaps in between groups of bristles in the brush portion axial direction, with an appropriate pool-amount of cosmetic liquid, without any extra members.
- In order to solve the problems described above, in a mode of the present invention, a cosmetic brush includes a brush portion formed of deformed core wires each having a non-circular cross section, the deformed core wires twisted to hold therebetween a plurality of bristles, wherein the bristles extend from twisted portions of the deformed core wires and split into two parts with respect to the brush portion axial direction.
- In the cosmetic brush, it is also preferable that the brush portion has the twisted portions adjacent to each other in the brush portion axial direction, and bristles extending from the twisted portion toward another neighboring twisted portion are in contact with bristles extending from the another twisted portion toward the one twisted portion.
- In another mode of the present invention, a cosmetic brush includes a brush portion formed of core wires that are twisted to hold therebetween a plurality of bristles, wherein the core wires are deformed core wires each having a non-circular cross section, and a pitch of twisted portions of the deformed core wire is formed wider in comparison with a pitch of twisted portions of core wires of which each cross section has a circular shape having the same wire diameter or the same cross-sectional area of the deformed core wires.
- According to the cosmetic brush of the present invention, its core wires are made up of deformed core wires each having a non-circular cross section, bristles that extend from twisted portions of the deformed core wires split into two parts in the brush portion axial direction. Therefore, a space formed between the split bristles becomes a gap of the bristles, so that gaps of the bristles can be formed in the brush portion axial direction.
- In the inventive cosmetic brush, with respect to the brush portion radial direction, the bristles extend from respective helically twisted portions of the deformed core wires, so that the volume of the bristles portion is substantially the same as that of a conventional cosmetic brush. Moreover, the inventive cosmetic brush does not need any extra members for forming gaps of the bristles. The inventive cosmetic brush is formed of deformed core wires and formed by a manufacturing process similar to that of a conventional cosmetic brush, so that the number of brush members and working man hours are maintained.
- When the inventive cosmetic brush is used to apply a cosmetic liquid such as a mascara liquid to eyelashes, the eyelashes are gathered and applied the cosmetic liquid in bundle in the successive gaps of the bristles distributed at a constant pitch in the brush portion axial direction, so that the eyelashes are finished in a well-bundled manner. Furthermore, when moving the cosmetic brush from the roots to the tips of eyelashes, the bristles act as a comb, so that long eyelashes keeping the well-bundled manner over the whole positions can be obtained.
- Moreover, since each group of the bristles split into two parts, bristles that extend from the twisted portion toward the another neighboring twisted portion are in contact with bristles from the another twisted portion toward the one twisted portion. Such contact portions of the bristles fit eyelashes well in applying a cosmetic finely to every detail of eyelashes.
- Furthermore, since the deformed core wires each has a non-circular cross section is used, twisted portions of the deformed core wires have a preferable inclination and a larger pitch in the brush portion axial direction than a pitch of twisted portions of core wires each having a circular cross section of the same diameter or of the same cross-sectional area of the deformed core wires. Therefore, bristles that extend from the twisted portions of the deformed core wires can be spread in the brush portion axial direction in comparison with that of the core wires having the circular cross section described above. Thus, a larger liquid-pool space of the brush portion is provided in the brush portion, which can contain a larger amount of cosmetic liquid in comparison with a brush portion of core wires having a circular cross section.
- Next, a preferred embodiment of the present invention is described based on the drawings.
-
Fig. 1 is a side view of a cosmetic brush according to a first example of the present invention,Fig. 2 is an illustration showing a method for preparing the cosmetic brush,Fig. 3(a) is a partial enlarged view of a side surface of the cosmetic brush,Fig. 3(b) is a cross-sectional view ofFig. 3(a), and Fig. 3(c) is a brief schematic view ofFig. 3(a) . - A
cosmetic brush 1 of the first example includes, as shown inFig. 1 , acap 2 capable of being screwed to a mouth portion of a cosmetic container not shown, and abrush portion 10 fixed to thecap 2. On the inner periphery of the mouth portion of the cosmetic container, a tubular flexible member (wiper) is provided for scrapping off acosmetic liquid 12 such as a mascara liquid excessively adhered to thebrush portion 10 when thebrush portion 10 is pulled out from the container. - The
cosmetic brush 1 is formed by, as shown inFig. 2 , inserting a number ofbristles 5 perpendicularly between two deformedcore wires bristles 5, and twisting the core wires together in an arbitrary direction. The two deformedcore wires 3i may be formed by folding one deformedcore wire 3i in half or using two deformedcore wires 3. The deformedcore wires 3i will be described in detail later. - Accordingly, the
cosmetic brush 1 has a form of thebristles 5 as shown inFig. 3(a) to Fig. 3(c) . That is, from atwisted portion 4 of thedeformed core wires bristles 5 are split into two parts with respect to a brush portion axial direction P (that is, split into two upper and lower parts in the drawing) and extend, and spread successively in a helicoidal fashion along thetwisted portion 4 of thedeformed core wires 3i with respect to a brush portion radial direction R (Particularly refer toFig. 3(a) . InFig. 3(a) , description of thebristles 5 extending from thetwisted portions 4 other than the portion shown in the drawing is omitted.). Therefore, a space formed between thesplit bristles 5 becomes agap 6 of the bristles, and in thecosmetic brush 1, in the brush portion axial direction P,gaps 6 of the bristles appear at positions corresponding to thetwisted portions 4, and crestportions 7 of the bristles appear between thetwisted portions Fig. 3 (c) . In the brief schematic view ofFig. 3(c) , description of bristles extending to the front side of the drawing of thebristles 5 spread in a helicoidal fashion from thetwisted portions 4 is omitted.). -
Fig. 4 is a schematic view to describe a state of thebristles 5 of thecosmetic brush 1. It is assumed that, since thecosmetic brush 1 usesdeformed core wires 3i as a core material, thebristles 5 sandwiched between the wires extend while being subjected to predetermined binding forces from thedeformed core wires 3i, and accordingly, the bristles are split into two parts. The deformedcore wire 3i has "surfaces" in the peripheral direction, so that when thedeformed core wires deformed core wires 3i appear at thetwisted portion 4. Thebristles 5 extend in contact with the surfaces of thedeformed core wires 3i, so that the extending directions of the bristles are determined according to the contact surface (if thecore wires 3 are circular, such surfaces do not exist, so that the bristles extend randomly). For example, at thetwisted portion 4 shown inFig. 4 ,bristles 5 subjected to a binding force of the deformed core wire 3iB positioned on the lower side come into contact with a twisted surface 3ib and are directed so as to extend upward, andbristles 5 subjected to a binding force of the deformed core wire 3iA positioned on the upper side come into contact with a twisted surface 3ia and are directed so as to extend downward. This state continues in a helicoidal fashion along thetwisted portions 4, and accordingly, in thecosmetic brush 1 using the deformedcore wires 3i,bristles 5 are split into two parts with respect to the brush portion axial direction P from thetwisted portions 4. -
Fig. 5 shows examples of the deformed core wires. The deformedcore wire 3i has, as shown inFig. 5 , a cross section having a quadrangular shape such as a shape of a square, a parallelogram, a rectangle, a diamond, or a trapezoid, or a non-circular shape such as a shape of a triangle, a pentagon, or a hexagon, that is, a cross sectional shape that causes surfaces to appear at thetwisted portions 4.Fig. 5 shows an example of the deformedcore wires 3i, and includes variations in which corners of the shown shapes are rounded or some sides are curved. In consideration of a shape that causes surfaces to reliably appear at thetwisted portions 4, the deformedcore wires 3i more preferably have a cross-sectional shape far from a circular cross-sectional shape. In consideration of convenience in a brush manufacturing process, the deformed core wires preferably have a rectangular cross section. - Next, advantages of application of a
cosmetic liquid 12 by using thecosmetic brush 1 described above are described. -
Fig. 6 is an illustration to describe use of thecosmetic brush 1. When thecosmetic brush 1 is pulled out from a cosmetic container, acosmetic liquid 12 is retained by therespective bristles 5 and in thegaps 6 of the bristles (shown by the dashed lines). In this state, when thecosmetic brush 1 is held horizontally and brought into contact witheyelashes 11, since thecosmetic brush 1 hasgaps 6 of bristles at a constant pitch, thecosmetic liquid 12 is applied in a state where a plurality ofeyelashes 11 are bundled, so thateyelashes 11 can be finished in a well-bundled manner. Further, when moving thecosmetic brush 1 from the roots to the tips ofeyelashes 11, thecrest portions 7 of the bristles act as a comb, so thatlong eyelashes 11 keeping the well-bundled manner over the whole positions can be obtained. - Further, as shown in the figure, a liquid-pool space of the
cosmetic brush 1 is mainly formed of therespective bristles 5 to which the liquid is adhered andgaps 6 of the bristles split into two parts, so that an amount of thecosmetic liquid 12 retained by thecosmetic brush 1 according to the present example is larger than that retained by the conventional cosmetic brush shown inFigs. 8 . In thecosmetic brush 1 according to the present example, thebristles 5 are split into two parts, so that thedeformed core wires 3i are not exposed, and troubles in which thecosmetic liquid 12 remains around thedeformed core wires 3i and causes excessive application of thecosmetic liquid 12 and results in chunks of thecosmetic liquid 12, or thecosmetic liquid 12 remaining on thedeformed core wires 3i are solidified as time passes and becomes dust, are reduced. -
Fig. 7(a) is a brief schematic view of a side surface of a cosmetic brush according to a second example of the present invention, andFig. 7 (b) is a cross-sectional view ofFig. 7 (a) . - A
cosmetic brush 1 according to a second example usesdeformed core wires 3i in the same manner as in the first example, and a length ofbristles 5 sandwiched by thedeformed core wires contact portions 8 of the bristles are formed. Components common to those in the first example are designated by the same reference symbols, and description thereof is omitted. In the brief schematic view ofFig. 7(a) , description of bristles extending toward the front side of the drawing ofbristles 5 spread in a helicoidal fashion fromtwisted portions - The
brush portion 10 according to the second example is formed so thatbristles 5d extending from one twistedportion 4A to the othertwisted portion 4B, thetwisted portions twisted portion 4B to the onetwisted portion 4A, cross each other. - In the present example as well, similar effects as in the first example are obtained. In addition, eyelashes 11 tangle well in the
contact portions 8 of the bristles, so that a detailed work to apply a cosmetic liquid to portions such as eyelashes at the inner corner and the tail of the eyes to which a cosmetic liquid is not easily applied can be performed. - The degree of contact of the bristles with the
contact portions 8 is not limited to crossing as in the case of the present example, but may make contact with only tip end portions of thebristles 5 or crossing of the central portions or base end portions of thebristles 5. The degree of contact can be arbitrarily changed to these variations by adjusting the lengths of thebristles 5. Thecontact portions 8 of the bristles may be formed at a part of thebrush portion 10. That is, depending on the form of thebrush portion 10, contact portions and non-contact portions may be mixed. - The
bristles 5 to be adopted in the first and second examples described above may be fibers of a synthetic resin, animal or plant hairs, etc., and solid and hollow fibers and variations of cross-sectional shapes of the fibers may also be used. Preferably, as thebristles 5, soft fibers are used. More preferably, as thebristles 5, unstretched synthetic fibers produced without a stretching step after an extruding step in a bristle manufacturing process are used. Details of the unstretched fibers are not described here since they are described in Japanese Patent No.5100985 deformed core wires 3i are easily reflected in the fibers when they are sandwiched by thedeformed core wires - In the first and second examples described above, the
cosmetic brush 1 is described as a cosmetic brush to apply a mascara liquid, however, it can also be applied to other cosmetic liquids. - Next, other effects to be obtained by using the
deformed core wires 3i for thecosmetic brush 1 described above are described.Figs. 9 are diagrams comparing a mode obtained by using the deformed core wires and modes obtained by using core wires each having circular cross section. -
Fig. 9 (a) shows a cosmetic brush using core wires each having a wire diameter "d" of 0. 8 mm and a precise circular cross section,Fig. 9 (b) shows a cosmetic brush usingdeformed core wires 3i each having a wire diameter "d" of 0.8 mm and a square cross section, andFig. 9(c) shows a cosmetic brush using core wires each having a wire diameter "d" of 0.9 mm and a precise circular cross section. InFigs. 9 , drawings at the upper stage are photographs showing comparison among the brush portions, drawings at the middle stage are cross-sectional views of the core wires (perpendicular to the brush portion axial direction), and drawings at the lower stage are schematic views of twisted portions of the core wires. The alternate long and short dash lines shown in the drawings are auxiliary lines. - The
brush portion 10b is obtained by using thedeformed core wires 3i, thebrush portion 10a is obtained by using core wires each having a circular cross section and the same wire diameter "d" as thedeformed core wires 3i, and thebrush portion 10c is obtained by using core wires each having a circular cross section and substantially the same cross-sectional area A as thedeformed core wire 3i. - As shown in the upper stage of
Figs. 9 , since thebrush portion 10b usesdeformed core wires 3i each having a non-circular cross section as core wires, thebristles 5 are more easily distributed in the brush portion axial direction P than the bristles of thebrush portion 10a or thebrush portion 10c. - A reason for this is that, as shown in the lower stage of
Figs. 9 , since thebrush portion 10b usesdeformed core wires 3i,twisted portions 4 of the core wires are provided with an inclination θb, and the pitch "hb" of thetwisted portions 4 in the brush portion axial direction P is increased. In thebrush portion 10b using thedeformed core wires 3i, the surfaces and corners shown inFig. 4 appear at thetwisted portion 4 of the core wires, and these interfere with each other and increase the inclination θb of the twisted portions, and accordingly, the inclination θb becomes larger than the inclination θa and inclination θc of the core wires each satisfying the conditions described above and having a circular cross section. As a result, the pitch "hb" of thetwisted portions 4 of thebrush portion 10b becomes larger than the pitch "ha" of thebrush portion 10a and the pitch "hc" of thebrush portion 10c. - Thereby, in the
brush portion 10b, thebristles 5 are more widely distributed in the brush portion axial direction P than the bristles in thebrush portion 10a orbrush portion 10c, and accordingly, a larger liquid-pool space of thebrush portion 10b is provided, which can contain a larger amount of cosmetic liquid. - Conventionally, when it is desired to increase the pitch of the
twisted portions 4 of the core wires, core wires with a thick wire diameter could only be selected, however, even if the wire diameter is the same, the pitch of thetwisted portions 4 of the core wires can be increased by using thedeformed core wires 3i as core wires. -
-
Fig. 1 is a side view of a cosmetic brush according to a first example of the present invention. -
Fig. 2 is an illustration showing a method for preparing the same cosmetic brush. -
Fig. 3(a) is a partial enlarged view of a side surface of the same cosmetic brush,Fig. 3 (b) is a cross-sectional view ofFig. 3(a), and Fig. 3(c) is a brief schematic view ofFig. 3(a) . -
Fig. 4 is a schematic view to describe a state of bristles of the same cosmetic brush. -
Fig. 5 is a view showing examples of deformed core wires. -
Fig. 6 is an illustration to describe use of the same cosmetic brush. -
Fig. 7(a) is a brief schematic view of a side surface of a cosmetic brush according to a second example of the present invention, andFig. 7 (b) is a cross-sectional view ofFig. 7(a) . -
Fig. 8(a) is a partial enlarged view of a side surface of a conventional cosmetic brush,Fig. 8(b) is a cross-sectional view ofFig. 8(a), and Fig. 8(c) is a brief schematic view ofFig. 8(a) . -
Figs. 9 are diagrams comparing a mode obtained by using the deformed core wires according to the present invention and modes obtained by using core wires each having a circular cross section. - 1: cosmetic brush, 3i: deformed core wire, 4: twisted portion, 5: bristle, 6: gap of bristles, 7: crest portion of bristles, 8: contact portion of bristles, 10: brush portion, 11: eyelash, 12: cosmetic liquid, P: brush portion axial direction, R: brush portion radial direction, d: wire diameter of core wire, A: cross-sectional area of core wire, h: pitch of twisted portions of core wires
Claims (3)
- A cosmetic brush comprising:a brush portion formed of deformed core wires each having a non-circular cross section, the deformed core wires twisted to hold therebetween a plurality of bristles, wherein the bristles extend from twisted portions of the deformed core wires and split into two parts with respect to the brush portion axial direction.
- The cosmetic brush according to Claim 1, wherein the brush portion has the twisted portions adjacent to each other in the brush portion axial direction, and bristles extending from the twisted portion toward another neighboring twisted portion are in contact with bristles extending from the another twisted portion toward the one twisted portion.
- A cosmetic brush comprising:a brush portion formed of core wires that are twisted to hold therebetween a plurality of bristles, wherein the core wires are deformed core wires each having a non-circular cross section, and a pitch of twisted portions of the deformed core wires is formed wider in comparison with a pitch of twisted portions of core wires of which each cross section has a circular shape having the same wire diameter or the same cross-sectional area of the deformed core wires.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/058480 WO2015145604A1 (en) | 2014-03-26 | 2014-03-26 | Brush for cosmetics |
PCT/JP2014/083532 WO2015145898A1 (en) | 2014-03-26 | 2014-12-18 | Brush for cosmetics |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3123896A1 true EP3123896A1 (en) | 2017-02-01 |
EP3123896A4 EP3123896A4 (en) | 2017-12-13 |
Family
ID=54194202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14887510.7A Withdrawn EP3123896A4 (en) | 2014-03-26 | 2014-12-18 | Brush for cosmetics |
Country Status (4)
Country | Link |
---|---|
US (1) | US20180177286A1 (en) |
EP (1) | EP3123896A4 (en) |
JP (1) | JPWO2015145898A1 (en) |
WO (2) | WO2015145604A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1025531B1 (en) * | 2017-02-22 | 2019-04-08 | Zahoransky Ag | Rotated brush, method for producing a screwed brush and apparatus for producing a screwed brush |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3058875B1 (en) | 2016-11-22 | 2021-01-01 | Oreal | BRUSH FOR THE APPLICATION OF A PRODUCT ON EYELASHES OR EYEBROWS |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02142213U (en) * | 1989-05-02 | 1990-12-03 | ||
JPH0381017U (en) * | 1989-12-05 | 1991-08-20 | ||
DE4022890A1 (en) * | 1990-07-18 | 1992-01-23 | Geka Brush Georg Karl Gmbh | BRUSH, ESPECIALLY MASCARA BRUSH |
US8001980B2 (en) * | 2006-01-11 | 2011-08-23 | Alcan Packaging Beauty Services | Multi-helicoidal applicator brush |
JP2009119176A (en) * | 2007-11-19 | 2009-06-04 | Junko Nakano | Liquid applicator |
-
2014
- 2014-03-26 WO PCT/JP2014/058480 patent/WO2015145604A1/en active Application Filing
- 2014-12-18 WO PCT/JP2014/083532 patent/WO2015145898A1/en active Application Filing
- 2014-12-18 JP JP2016509913A patent/JPWO2015145898A1/en active Pending
- 2014-12-18 EP EP14887510.7A patent/EP3123896A4/en not_active Withdrawn
- 2014-12-18 US US15/128,686 patent/US20180177286A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1025531B1 (en) * | 2017-02-22 | 2019-04-08 | Zahoransky Ag | Rotated brush, method for producing a screwed brush and apparatus for producing a screwed brush |
Also Published As
Publication number | Publication date |
---|---|
US20180177286A1 (en) | 2018-06-28 |
EP3123896A4 (en) | 2017-12-13 |
JPWO2015145898A1 (en) | 2017-04-13 |
WO2015145898A1 (en) | 2015-10-01 |
WO2015145604A1 (en) | 2015-10-01 |
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