JP6254316B1 - Cosmetic applicator - Google Patents

Abstract

The present invention provides a cosmetic applicator that is easy to volume up and roll up. SOLUTION: A linear core wire portion (18) constituted by a pair of metal core wire members (18a) twisted spirally and a twisted portion of the core wire material (18) are radially dispersed. A cosmetic applicator comprising an application part (8) constituted by a large number of bristles (20) spirally continuous in the axial direction of the core wire part, the application part (8) being the axis of the core wire part The cross section at any position in the (X) direction is a predetermined substantially polygonal shape with all internal angles within 180 degrees, and the axis (X) of the core wire portion is centered as it proceeds along the axis (X) direction of the core wire portion. A cosmetic applicator (2) having an outer shape in which a predetermined substantially polygonal shape continues while rotating in the circumferential direction is provided. [Selection] Figure 2

Description

  The present invention relates to a cosmetic applicator used for applying liquid cosmetics such as mascara and a method for producing the same.

  As a cosmetic applicator that applies liquid cosmetics such as mascara to the eyelashes, a number of bristles of a predetermined length arranged in parallel in a band are sandwiched between a pair of metal core wires and twisted in a spiral shape There is a cosmetic applicator that has a linear core portion composed of a pair of core wires, and an applicator portion that is radially dispersed from the twisted portions of the core wires and is made of bristles that are spirally continuous.

  Such a cosmetic applicator is required to easily increase the volume or roll up of the eyelashes, and since the two different purposes are performed with a single cosmetic applicator, a short portion of bristles is applied to the application part. It is known to make long parts. For example, in Reference 1, a groove is formed in the application part, the liquid cosmetic is held in the short part of the bristle that is the groove part, and the eyelash volume is increased, and the eyelashes are easily rolled up in the long part of the bristle other than the groove part. Yes.

JP S61-193604

  However, in the cosmetic applicator with grooves in the circumferential direction of Reference 1, the volume does not increase as expected when the liquid cosmetic is applied to the eyelashes, and the groove part becomes a step and rolls up. It is difficult to use, such as being hard to remove. Further, a cosmetic applicator having a groove in the brush axis direction is increased in volume only in the groove portion, and is not rolled up, resulting in unevenness in the finish.

  An object of the present invention is to provide an easy-to-use cosmetic applicator that is easy to volume up and roll up.

  In order to achieve the above object, as claimed in claim 1, while being linearly dispersed by being sandwiched between a linear core wire portion constituted by a pair of metal core wires twisted in a spiral shape and a twisted portion of the core wire material, In a cosmetic applicator provided with an applicator formed of a large number of bristles that are spirally continuous in the axial direction of the core wire portion, the applicator has a cross section at any position in the axial direction of the core wire portion at all inner angles. Is a predetermined substantially polygon within 180 degrees, and has an outer shape in which the predetermined substantially polygon is continuous while rotating in the circumferential direction around the axis of the core part as it advances along the axial direction of the core part. Provide applicator.

  The cosmetic applicator according to claim 1, wherein the predetermined substantially polygonal shape is a substantially tear-shaped combination of a triangle and an arc, and the core wire portion is unevenly distributed on the arc side. Provide ingredients.

  As Claim 3, in the cosmetic applicator according to Claim 1 or Claim 2, the predetermined substantially polygonal shape is a substantially teardrop shape combining a triangle and an arc, and the core portion is unevenly distributed on the arc side, Triangular corners provide a cosmetic applicator that is rounded by an arc.

  As a fourth aspect, in the cosmetic applicator according to any one of the first to third aspects, the cross-sectional shape is composed of only a straight line or an arc centered on the straight line and the axis of the core wire portion. A cosmetic applicator is provided in which the lengths of the perpendicular lines from the core portion to the center of the core portion are all equal.

  According to a fifth aspect of the present invention, there is provided a cosmetic applicator according to any one of the first to fourth aspects, wherein the cosmetic applicator is provided with a reduced diameter portion at the tip of the applicator.

  Claim 6 is the cosmetic applicator according to any one of claims 1 to 5, wherein the applicator is entirely curved or inclined with respect to the central axis of the cosmetic applicator. I will provide a.

  As a seventh aspect of the present invention, the cosmetic applicator manufacturing method according to any one of the first to sixth aspects, wherein a plurality of bristles of a predetermined length arranged in parallel in a strip shape are used as a pair of metal core wires. A linear core wire portion composed of a pair of core wire materials and a coating composed of bristles continuously spirally dispersed radially from the twisted portion of the core wire materials A pre-processing step of forming a pre-processing cosmetic brush comprising a portion, a trimming step for trimming the tip of the bristles constituting the coating portion and adjusting the outer shape of the coating portion to a substantially cylindrical shape, and the bristles constituting the coating portion A positioning step for adjusting the positional relationship between a processing device having a cutting blade and a receiving blade having a predetermined width for shearing and a pre-processing cosmetic brush, and the pre-processing cosmetic brush around the core portion Processing device while rotating A method of manufacturing a cosmetic applicator comprising: a forming step of forming a shearing surface extending in a spiral shape on the outer shape of the application part by moving relative to the axial direction of the core part and shearing the bristol tip of the application part I will provide a.

  The manufacturing method of the cosmetic applicator according to claim 7, wherein the forming process includes rotating the pre-process cosmetic brush around the core portion by a predetermined angle, and aligning the forming process and the forming process. Provided is a method for manufacturing a cosmetic applicator that forms a coating part having a desired shape by repeating a process a predetermined number of times.

  It is possible to provide an easy-to-use cosmetic applicator that is easy to increase and roll up the eyelashes.

It is sectional drawing (except the application part 8) of the mascara cosmetic 1 which shows the application example of the cosmetic applicator which concerns on 1st Embodiment. It is the schematic diagram which showed the external shape of the cosmetic brush 19 which concerns on 1st Embodiment typically, (a) Front view, (b) Surface (surface 34) (c) surface of the base end side of the application part 8 (D) Perspective view, (e) Perspective view seen from another direction, (f) End view along line II (f) -II (f), (g) II (g) End view along line II- (g), (h) End view along line II (h) -II (h), End view along line II (i) -II (i). (J) End views along line II (j) -II (j) are respectively shown. The external shape of the makeup | decoration brush 119 which concerns on 2nd Embodiment is shown typically, (a) Front view, (b) Surface (surface 64) (c) surface 64 of the base end side of the application part 108 (D) perspective view, (e) perspective view seen from another direction, (f) end view along line III (f) -III (f), (g) III (g) End view along line -III (g), (h) end view along line III (h) -III (h), (i) end view along line III (i) -III (i), (J) End view along line III (j) -III (j), (h) End view along line III (h) -III (h), (k) III (k) -III (k) Each end view along the line is shown. It is a flowchart of a manufacturing method. It is explanatory drawing explaining the process before this process. It is the schematic of the brush 39 for makeup | decoration before this process. It is explanatory drawing of the alignment process and the processing apparatus 40, (a) Perspective view (b) Front view. FIG. 4 is a detailed view of a surface 34. 7 is a detailed view of a surface 64. FIG. It is a modification of the cross-sectional shape of the application part 8. FIG. The modification of the cosmetic applicator 2 is shown.

It is a table | surface which shows the alignment process and shaping | molding process of the application part 8, and a horizontal column is (a) the positional relationship of the surface 34 and the processing apparatus 40 before a shaping | molding process, (b) The shape of the application part 8 after a shaping | molding process, (C) The surface 34 after forming is shown, and the column shows the number of alignment steps and forming steps.

It is a table showing the alignment process and the molding process of the application part 108, the horizontal column is (a) the positional relationship between the surface 64 before the molding process and the processing apparatus 40, (b) the shape of the application part 108 after the molding process, (C) The surface 64 after forming is shown, and the column shows the number of alignment steps and forming steps.

(First embodiment)
Hereinafter, preferred embodiments of a cosmetic applicator and a method for producing the same according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the mascara cosmetic 1 includes a mascara liquid container 10 that contains a mascara liquid 16 and a cosmetic applicator 2 that can be attached to the reduced diameter portion 12 of the mascara liquid container 10.

  The cosmetic applicator 2 includes a cap 4, a base shaft 6, and a cosmetic brush 19. The makeup brush 19 has a core wire part 18 and an application part 8. The applicator 8 is configured such that the bristles 20 sandwiched between the core wires 18 extend radially in the circumferential direction of the core wires 18 from the twisted portions of the twisted core wires 18a (hereinafter referred to as the core wires 18). The portions 18 are uniformly distributed in a spiral shape in the axial direction. The base shaft portion 18b of the core wire portion 18 is fitted into a hole 6b provided in the base shaft 6, and the base shaft 6 and the cosmetic brush 19 are integrally formed. The cap 4 of the cosmetic applicator 2 that is screwed into the mascara liquid container 10 is integrated with a base end portion 6 a of the base shaft 6 whose diameter is increased.

  The mascara liquid container 10 is a bottomed cylinder, the upper end portion of which has a reduced diameter, has an opening at the upper end of the reduced diameter portion 12, and a wiper 14 is press-fitted and fixed to the inner periphery. A male screw is provided on the outer peripheral surface of the reduced diameter portion 12, and a female screw is provided on the lower inner periphery of the cap 4. The cap 4 can be screwed to the reduced diameter portion 12 of the mascara liquid container 10. . The wiper 14 disposed on the inner periphery of the reduced diameter portion 12 is formed of a cylindrical body made of rubber or plastic material, and has a bottom wall that is open, and when the cosmetic applicator 2 is pulled out from the mascara liquid container 10. Then, the base shaft 6 and the cosmetic brush 19 are pulled out, and the application unit 8 is handled to scrape off the excessive mascara liquid 16 adhering to the application unit 8. The cosmetic applicator 2 can freely enter and leave the mascara liquid container 10, and the user holds the cap 4 and applies the mascara liquid 16 to the eyelashes. In a state where the mascara liquid container 10 and the cap 4 are screwed together, the application unit 8 is positioned slightly above the bottom of the mascara liquid container 10.

(Applicator shape)
As shown in FIG. 2, the outer shape of the application unit 8 includes a base-side surface 34, a tip-side surface 36, and five surfaces (22, 24, 26, 28, 30). The five surfaces (22, 24, 26, 28, 30) are spiral surfaces that extend along the central axis X while rotating about the central axis X of the core wire portion 18, respectively. It has the same rotation angle (180 degrees) from the side surface 34 to the front end surface 36.

  The surface 34 is a pentagon composed of five straight lines (22a, 24a, 26a, 28a, 30a) that are tangents to the five surfaces (22, 24, 26, 28, 30). The vertex 38a has a longer distance from the center point X 'of the cross section of the core portion than the other vertexes, and the interior angle β is smaller than the other interior angles. The straight lines 28a, 30a, and 22a constituting the surface 34 are equal in length, and the lengths of the perpendicular lines (28d, 30d, 22d) to the center point X 'are also equal. The remaining two straight lines (24a, 26a) are also equal in length, and the lengths of the perpendiculars (24d, 26d) to the center point X 'are also equal. The surface 34 is symmetrical.

  The application section 8 has an outer shape that is continuous while rotating 180 degrees in the circumferential direction about the central axis X as the surface 34 advances along the central axis X to the surface 36. For this reason, as shown in FIGS. 4E to 4I, the application portion is composed of cross-sectional lines (22b, 24b, 26b, 28b, 30b, 32b) of the five surfaces (22, 24, 26, 28, 30). The cross-sectional shape of 8 is the same pentagon as the surface 34 at any cutting position, and only the direction thereof is different.

(Effect of the first embodiment)
The applicator 8 includes a large number of bristles 20 that spread radially evenly in the circumferential direction around the core wire 18. The cross-sectional shape of the application part 8 is a pentagon, and the distance from the core part 18 which is the center to the tip of the bristol 20, that is, the length of the bristol 20, is short and long. In the long part of the bristles 20, the bristles 20 can enter between the eyelashes to roll up the eyelashes. Moreover, the mascara liquid 16 is hold | maintained in the part with short Bristol 20, and it can touch to a root easily and can raise an eyelash volume. Since both are present in the circumferential direction, when the mascara liquid 16 is applied to the eyelashes by gently turning the cap 4 as a handle, both can be brought into contact with the eyelashes by a single operation. Both volume up and roll up can be performed by one application, which is efficient and easy to use. Furthermore, the long part and the short part of the bristol 20 are continuously formed spirally around the central axis X around the core wire part 18 in the direction of the central axis X, and both are used when the cap 4 is rotated. Easy to entangle and easy to use.

  Moreover, all pentagons which are the cross-sectional shape of the application part 8 have an inner angle within 180 degrees and do not have a recessed part. That is, the application part 8 does not have a groove in the circumferential direction. When there are grooves in the circumferential direction, it is difficult to apply because the eyelashes are difficult to enter there. Since the applicator 8 does not have a groove in the circumferential direction, the bristles can easily come into contact with the eyelashes, and the eyelashes can be easily entangled as described above. Further, since the same shape continues in the direction of the central axis X while rotating, the maximum outer diameter is the same at any position, and by using it while rotating, the eyelashes can be rolled up evenly.

  With only one cosmetic applicator 2, both roll-up and volume-up can be performed by one application, and it is not necessary to perform both separately, so the mascara solution 16 is efficiently applied and the eyelashes are adjusted. be able to. Easy to volume up and roll up, easy to use.

  The straight line 28a, the straight line 30a, and the straight line 22a have the same perpendicular length to the center point X ', and the line connecting them is similar to an arc whose center is the center point X'. The straight line 26a and the straight line 24a are connected to the end points of the circular arc, and the surface 34 has a substantially tear shape in which the circular arc and the triangle are connected. The center point X 'is unevenly distributed near the arc side rather than the center of the surface 34, and the triangle side bristles 20 and the arc side bristles 20 are relatively long on the triangle side and short on the arc side. That is, the surface 26 and the surface 24 are long in the bristles 20 and form a sharp peak in the application portion 8. This chevron-shaped portion can easily enter the eyelashes, and can be easily rolled up like the comb to roll up more efficiently. Eyelashes are easier to prepare than when the cross-sectional shape is a regular pentagon. The surface 28, the surface 30, and the surface 22 have a relatively short length of the bristol 20 and are almost uniform in length, are easy to touch the eyelashes, hold the mascara liquid 16, and are suitable for increasing the volume of the eyelashes. The long part and the short part of the Bristol 20 are on the opposite side in the circumferential direction, and each performance is high, can be used in a well-balanced manner, and the feeling of use is good.

(Second Embodiment)
Next, a second embodiment will be described. As shown in FIG. 3, the second embodiment is different from the first embodiment only in the form of a cosmetic brush. The cosmetic brush 119 according to the second embodiment is formed integrally with the base shaft 6 at the tip of the cosmetic applicator 2 as in the first embodiment, and has a core wire portion 118 and an application portion 108. The application unit 108 includes a main portion 102 provided on the base shaft side and a reduced diameter portion 104 provided on the distal end side. As in the first embodiment, the application unit 108 is configured such that the bristles 120 sandwiched between the twisted core wire members 118 a (hereinafter, the core wire portions 118) and the core wire portions 118 are even in the circumferential direction of the core wire portions 118. It extends radially and is uniformly dispersed in a spiral shape in the axial direction of the core wire portion 118.

  The surface 64 on the base axis side of the coating part 108 has a substantially hexagonal shape composed of an arc 62a centered on the center point X ′ of the cross section of the core part and five straight lines (52a, 54a, 56a, 58a, 60a). is there. The lengths of the perpendicular lines (52d, 54d, 56d, 58d, 60d) from the center point X ′ to the five straight lines (52a, 54a, 56a, 58a, 60a) are all equal, and the center point X that is the center point of the arc 62a Shorter than the distance to '.

  The main portion 102 is continuously formed so that the substantially hexagonal shape moves to the reduced diameter portion 104 along the central axis X while rotating 150 degrees in the circumferential direction around the central axis of the core wire portion 118. Have a different shape. As shown in FIGS. 3E to 3J, the cutting lines (52b, 54b, 56b, 58b, 60b) of the six surfaces (52, 54, 56, 58, 60, 62) constituting the main portion 102, The substantially hexagonal shape composed of 62b) is the same shape as the surface 64 at any cutting position, and only the direction thereof is different.

  The reduced diameter portion 104 has a substantially truncated cone shape that is reduced in diameter toward the tip, and the tip-side surface 66 is circular. The five surfaces (52, 54, 56, 58, 60) are spiral surfaces that extend along the central axis X while rotating around the central axis X of the core wire portion 118, and are line end surfaces of the main portion 102. And the same rotation angle (150 degrees) from the surface 64 to the reduced diameter portion 104, and further extends to the middle of the reduced diameter portion 104.

(Effect of 2nd Embodiment)
In the surface 64, the distances to the center point X ′ of the straight line 45a, the straight line 56a, and the straight line 58a are equal, the arc 62a has the longest distance to the center point X ′, and the straight line 52a and the straight line 60a are arcs. It becomes narrower toward 62a. The surface 64 has a substantially tear shape in which triangular corners are rounded by an arc 62a. Similar to the first embodiment, the surface 52, the surface 62, and the surface 62 form a long peak portion of the bristol 120, and when the cosmetic applicator 2 provided with the makeup brush 119 is used while turning, the peak portion becomes an eyelash. Easy to enter and easy to lift up eyelashes. Since the mountain portion is rounded by the surface 62, it has a predetermined width, and the area of contact with the eyelashes increases, so that the eyelashes can easily get into the eyelashes and be easily entangled. Further, the peak portion is a portion that is easily deformed by repeatedly passing the wiper 14, but the deformation can be reduced by rounding the surface 62.

Further, the lengths of the perpendicular lines from the five straight lines (52a, 54a, 56a, 58a, 60a) constituting the surface 64 to the center point X ′ of the core part 118 are all equal. This is because the number of steps for forming the application part 108 is small when the cosmetic brush 119 is manufactured by the manufacturing method described later. The shape is suitable for efficient production with a short molding time.

The application part 108 is provided with a reduced diameter part 104 at the tip. When the cosmetic brush 119 is inserted and housed in the mascara liquid container 10, the tip portion is reduced in diameter so that it can be easily inserted. Deformation of the tip portion due to repeated use can be reduced.

(Manufacturing method of the cosmetic brush 19)
Next, the manufacturing method of the cosmetic brush 19 according to the first embodiment will be described with reference to the flowchart of FIG.

  First, as the pre-processing step (S1), as shown in FIG. 5, the bristles 20 are cut to the same length, and are sandwiched between a pair of core wires 18a, the core wires 18a are twisted, and the bristles 20 are fixed. Then, the application part 8 is formed.

  Next, as a trimming step (S2), as shown in FIG. 6, the tips of the bristles 20 configured so that the application portion 8 has a cylindrical shape are trimmed. So far, it is a known processing method. As a result, the pre-processing makeup brush 39 is completed.

  The applicator 8 is formed into a predetermined shape by shearing the bristles 20 of the pre-processing cosmetic brush 39 with the processing device 40. As shown in FIG. 7, the processing device 40 includes a rotary blade 48 having a cutting blade 46 extending in the longitudinal direction of a cylindrical body portion 44 and a receiving blade 42 having the same width. When the rotary blade 48 rotates at high speed about the central axis Y, the receiving blade 42 and the cutting blade 46 are arranged to be parallel with a very small gap. Four cutting blades 46 are fixed at a slight inclination in the rotational direction and four in the circumferential direction of the body portion 44 at equal intervals. The cutting blades 46 are all equal in length and height. The processing device 40 shears the bristol 20 that has entered the gap between the cutting blade 46 and the receiving blade 42. Hereinafter, a gap between the rotated cutting blade 46 and the receiving blade 42, that is, a line where the bristol 20 is sheared is referred to as a shear line Z. The processing device 40 is movable in the forward direction DR orthogonal to the body portion 44 while rotating the rotary blade 48 at a high speed.

  Next, as the alignment step (S3), the positions of the pre-processing makeup brush 39 and the processing device 40 are adjusted. The pre-processing makeup brush 39 has a processing device 40 so that the central axis X of the core portion 18 is orthogonal to the shear line Z when viewed from above and the central axis X and the front direction DR are parallel when viewed from the side. Placed in front of. The alignment in the vertical direction and the circumferential direction is performed with reference to the surface 34 and the shear line Z. As shown in Table 1, since the surface 22 is first formed on the coating portion 8, the vertical distance D from the center point X ′ to the shear line Z is equal to the distance 22h (perpendicular line 22d) from the center point X ′ to the straight line 22a. (See (a) of the number of processing times 1 in Table 1). As will be described later, in the first molding step, the circumferential arrangement position may be anywhere, but it is necessary to arrange it in a desired shape after the second.

  Next, as a forming process step (S4), the processing device 40 is directed toward the pre-processing cosmetic brush 39 while rotating the rotary blade 48 so that the shear line Z passes from the rear end to the front end of the application portion 8. To move in the forward direction DR to shear the bristol tip 22c. While the shear line Z passes from the rear end to the front end of the application portion 8, the helical surface 22 is applied around the central axis X by rotating the pre-processing cosmetic brush 39 about the central axis X by 180 degrees. It forms in the part 8 (refer (b) of the processing frequency 1 of Table 1).

  In order to form the surface 24 (S5), the alignment step (S3) is performed again. The processing device 40 is moved backward, the circumferential direction (180 degrees) corresponding to the rotation of the pre-processing cosmetic brush 39 is adjusted to the original position, and returned to the position before molding. Then, the distance D in the vertical direction is a position rotated by an angle α1 from the original position in the circumferential direction so that the distance 24h (the length of the perpendicular 24d) between the straight line 24a and the center point X ′ becomes the distance 24h. In this manner, the pre-processing cosmetic brush 39 is arranged (see (a) of the number of processing times 2 in Table 1). The angle α1 is an angle formed by the perpendicular line 22d and the perpendicular line 24d.

  Next, the molding process (S4) is performed again. As before, while rotating the rotary blade 48, the processing device 40 is moved toward the front pre-processing cosmetic brush 39 to shear the bristol tip 24c. While the shear line Z is moved from the rear end to the front end of the application part 8, the pre-processing cosmetic brush 39 is rotated in the circumferential direction at the same angle and 180 degrees in the same direction as the first molding process. Thus, a spiral surface 24 is formed around the central axis X in the application portion 8.

  The remaining surfaces (26, 28, 30) are similarly formed by repeating the alignment process and the molding process (see Table 1), and five surfaces (22, 24) formed in a spiral around the central axis X are formed. , 26, 28, 30) is formed.

  As described above, in one alignment step (S3) and molding process step (S4), one spiral surface can be formed on the application portion 8, and the alignment step and molding are performed until there is no surface to be processed. Repeat the machining process.

  By the manufacturing method described above, a spiral surface extending along the central axis X while rotating about the central axis X can be formed on the application portion 8. Further, when forming a plurality of surfaces, alignment is performed and the surface 34 is rotated by the same predetermined angle (180 degrees) each time, so that the surface 34 is rotated 180 degrees in the circumferential direction around the central axis X of the core wire portion 18. However, it has a shape continuously formed so as to move along the central axis X to the surface 36 on the front end side, and its cross-sectional shape is the same pentagonal shape as the surface 34 at any cutting position, The application part 8 having a complicated shape in which only the direction is different can be formed.

(Method for manufacturing cosmetic brush 119)
Next, a method for manufacturing the cosmetic brush 119 according to the second embodiment will be described.

  First, as in the first embodiment, as in the pre-processing step (S1), the bristles 120 are cut into the same length, sandwiched between a pair of core wires 118a, the core wires 118a are twisted, and the bristles 120 are The application part 108 is shape | molded by fixing.

  After that, as the trimming step (S2), the tip of the bristol 120 is trimmed, and at that time, the shape of the application part 108 is changed to a bullet shape (see (b) of the number of times of processing 0 in Table 2). Thus, the cosmetic brush 139 before processing is formed.

  Next, as the alignment step (S3), the pre-processing cosmetic brush 139 is viewed from the top so that the center axis X of the core wire portion is orthogonal to the shear line Z and from the side, the center axis X and the front direction It arrange | positions ahead of the processing apparatus 40 so that DR may become parallel. The distance D in the vertical direction is adjusted so as to be the distance 52h (the length of the perpendicular line 52d) from the center point X 'to the straight line 52a (see (a) of the processing number 1 in Table 2).

  Next, as a forming step (S4), the processing device 40 is moved in the forward direction DR while rotating the rotary blade 48 at a high speed, and the bristol tip 52c is sheared. While the processing device 40 passes from the rear end to the front end of the application unit 108, the pre-processing cosmetic brush 139 is rotated 180 degrees around the central axis X. The rotary blade 48 shears the bristol 120 to the middle of the main part 102 and the reduced diameter part 104 to form a surface 52 around the central axis X in the application part 108 (see (b) of the number of processing times 1 in Table 1).

  Next, in order to form the surface 54 (S5), the alignment step (S3) is performed again. The processing device 40 is moved rearward, and the circumferential direction (180 degrees) of the rotation of the pre-processing cosmetic brush 139 is adjusted to the original position and returned to the arrangement position before the molding process. In the circumferential direction, the pre-processing cosmetic brush 139 is disposed so as to be a position rotated by an angle α5 from the original position. The angle α5 is an angle formed by the perpendicular 52d and the perpendicular 54d. The distance D in the vertical direction is the same for all the vertical surfaces (52d, 54d, 56d, 58d, 60d) of the machining surfaces (52, 54, 56, 58, 60) to the center point X ′ (all 52h), there is no need to adjust again. (Refer to (a) of the processing number 2 in Table 2).

  Next, a shaping | molding process process (S4) is performed again. As before, while rotating the rotary blade 48, the processing apparatus 40 is moved toward the front pre-processing cosmetic brush 139, and the bristol tip 54c is sheared. While the shear line Z moves from the rear end to the front end of the application unit 108, the pre-processing cosmetic brush 139 is rotated in the circumferential direction at the same angle and 180 degrees in the same direction as the first molding process. Thus, a spiral surface 54 is formed around the central axis X in the application part 108.

  Similarly, the remaining surfaces (56, 58, 60) are formed. The alignment process and the molding process are repeated until there is no more surface that needs to be processed (S5). A portion of the main portion 102 remaining without being sheared becomes a surface 62.

  By the above manufacturing method, the cosmetic brush 119 having a complicated shape with the reduced diameter portion 104 can be manufactured. Since the distance D in the vertical direction is the same on all the processed surfaces, once the alignment is performed, the vertical alignment again is unnecessary. For this reason, if the position of the pre-processing makeup brush 139 is fixed, the pre-processing makeup brush 139 only needs to be rotated, and the processing device 40 only needs to be controlled in the front-rear direction. It is.

(Modification)
As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to said embodiment, It can implement in various deformation | transformation.

  The same effect can be obtained not only by the application part 8 having the above-mentioned cross-sectional shape but also by the application part 8 having a cross-sectional shape such as (a) to (i) shown in FIG. Moreover, as long as all the spiral surfaces of the application part 8 are the same direction, the rotation direction may be any.

  In the trimming process, the application unit 108 may be formed into a spheroid shape. In this case, the spiral surface is formed in the central portion of the application part. The reduced diameter portion 104 may have a cylindrical shape with a smaller radius than the main portion 102.

  In the alignment step, the direction of the pre-processing cosmetic brush 39 may be reversed so that the distal end side is directed to the processing device 40 and the application unit 108 may be sheared from the distal end side toward the proximal end side.

  In the molding process, the pre-processing cosmetic brush 39 was rotated 180 degrees, but other angles such as 90 degrees, 135 degrees, 270 degrees, 360 degrees, 540 degrees, 720 degrees, 900 degrees, etc. May be the angle. Further, although the processing device 40 moves toward the pre-processing makeup brush 39 and shears the bristles 20, the pre-processing makeup brush 39 may move to the processing device 40 while rotating.

  Further, as shown in FIG. 11, the cosmetic brush 119 may be deformed in order to improve the feeling of use after the application portion 8 is molded. The cosmetic brush 119a curved with respect to the center line of the cosmetic applicator 2 is easy to touch the eyelashes in the shape of eyelashes. The cosmetic brush 119b inclined with respect to the center line of the cosmetic applicator 2 is easy to apply with an angle to the eyelashes.

DESCRIPTION OF SYMBOLS 1 Mascara cosmetics 2 Cosmetic applicator 4 Cap 6 Base shaft 6a (Base shaft) Base end 6b (Base shaft) hole 8, 108 Application section 10 Mascara liquid container 12 Reduced diameter section 14 Wiper 16 Mascara liquid 18, 118 Core portion 18a , 118a Core wire 18b Base shaft portion (of core wire portion) 19, 119, 119a, 119b Cosmetic brush 20, 120 Bristol 22, 24, 26, 28, 30, 34, 36 Surfaces 22a, 24a, 26a, 28a, 30a ( Straight lines 22b, 24b, 26b, 28b, 30b (which constitute the surface 34) straight lines 22c, 24c, 26c, 28c, 30c (which constitute the cutting surface of the coating part 8) Bristol tip 22d, 24d, 26d, 28d, 30d ( Perpendicular lines 22h, 24h, 26h, 28h, 30h (to center point X ') Distance 38a (to center point X') Vertices 39, 13 9 Pre-processing makeup brush 40 Processing device 42 Receiving blade 44 Body 46 Cutting blade 48 Rotary blades 52, 54, 56, 58, 60, 62, 64, 66 Surface 52a, 54a, 56a, 58a, 60a (surface 64 Straight line 62a arcs 52b, 54b, 56b, 58b, 60b, straight lines 62b arcs 52c, 54c, 56c, 58c, 60c Bristol tips 52d, 54d, 56d, 58d , 60d Vertical line 52h (to the center point X ') Distance 102 (to the center point X') Main part 104 (of the application part 108) Reduced diameter part D (of the application part 108) Distance X (vertical direction) Center axis X 'center point Y center axis (of rotary blade 48)

Claims (6)

A linear core portion composed of a pair of metal core wires twisted together in a spiral;
A number of bristles that are spirally continuous in the axial direction of the core wire portion while being radially dispersed while being sandwiched between the twisted portions of the core wire material,
In a cosmetic applicator provided with an applicator composed of
The application part has a predetermined substantially polygonal shape in which all internal angles are 180 degrees or less in any cross section at any position in the axial direction of the core line part, and as the core part moves along the axial direction of the core line part, Having an outer shape in which the predetermined substantially polygon is continuous while rotating in the circumferential direction around an axis;
The predetermined substantially polygon is a first shape that is a left-right symmetric polygon with the longest one side as an upper side, and the upper side of the sides constituting the first shape that share the upper side as a base. A bilaterally symmetric shape that joins a second shape that is an isosceles triangle with the bases equiangularly sandwiched between two sides longer than each side;
The core portion is unevenly distributed near the first shape on the substantially polygonal left-right symmetry line,
A cosmetic applicator characterized by that.
  The predetermined substantially polygonal shape is a regular hexagon that shares the longest side of the first shape, which is an isosceles trapezoid obtained by cutting a regular hexagon in half at its apex, and the longest side of the first shape, which is the isosceles trapezoid, as a base. A left-right symmetric pentagon shape formed by joining a second shape that is an isosceles triangle having two sides longer than one side;
  The cosmetic applicator according to claim 1.
The predetermined substantially polygonal shape constitutes the first shape that shares a first shape that is a symmetrical trapezoid with the longest one side as an upper side and the upper side of the trapezoid that is the first shape as a base. A second shape which is a substantially quadrangle in which the base is equiangularly sandwiched between two sides longer than any of the sides excluding the upper side, and the corner formed by the two sides is rounded by an arc centered on the core part; , Is a substantially hexagonal shape,
  The cosmetic applicator according to claim 1.
A plurality of bristles of a predetermined length arranged in parallel in a strip shape are sandwiched between a pair of metal core wires and twisted in a spiral shape, whereby a linear core portion composed of a pair of core wires, and the core A pre-processing step of forming a pre-processing cosmetic brush having a coating portion formed of bristles that are dispersed in a radial manner from the twisted portion of the wire, and spirally continuous,
Trimming step of trimming the Bristol tip constituting the application part, and adjusting the outer shape of the application part into a substantially cylindrical shape,
A positioning step of adjusting the positional relationship between the processing device and the main processing before cosmetic brush having a cutting blade and the receiving blade flat blade having a predetermined width for shearing the bristles constituting the coating unit,
While rotating the pre-processing cosmetic brush around the core wire portion, the processing device is moved relatively in parallel with the axial direction of the core wire portion to shear the bristle tip of the application portion, thereby applying the application portion. Forming process to form a spirally extending shear surface on the outer shape of
The method for producing a cosmetic applicator according to any one of claims 1 to 3 , comprising:
In the molding process, the cosmetic brush before main processing is rotated around the core part by a predetermined angle,
By repeating the positioning step and the molding process step a predetermined number of times, a coating part having a desired shape is formed.
The method for producing a cosmetic applicator according to claim 4 , wherein:
  The predetermined number of times is the number of sides of a straight line constituting the predetermined substantially polygon.
  The method for producing a cosmetic applicator according to claim 5.