JP5355868B2 - Cosmetic applicator - Google Patents

Description

  The present invention relates to a cosmetic applicator, and more particularly to the structure of a bristle comb.

  Conventionally, as an applicator used when applying mascara liquid to eyelashes, an applicator configured by, for example, a brush shape or a groove shape for applying mascara liquid to eyelashes on the tip outer peripheral surface of a cylindrical shaft is provided. In addition, on the outer peripheral surface of the tip opposite to the application part and the shaft, the soot that is a mass of the mascara liquid is applied to the eyelashes to which the mascara liquid is applied by the application part, or sticks to each other There is a thing provided with the comb part which has a plurality of bristle for carrying out the eyelashes which have become one by one (for example, patent documents 1).

Such an applicator is normally sealed with the tip of the shaft immersed in the mascara liquid contained in the container body, and when the mascara liquid is applied to the eyelashes, the mascara liquid is removed from the container body. When the tip end of the attached shaft is pulled out, it is used after adjusting the amount of mascara liquid attached by a handling member formed on the container body.
JP 2006-95091 A

  However, the comb part of the applicator is formed with a relatively hard hardness to comb the eyelashes, and the gaps between each bristle are also roughly formed. It was difficult to comb the eyelashes well because the mascara liquid adhered to the surface or the mascara liquid entered the gaps between the bristle.

  Therefore, in order to handle the mascara liquid adhering to the comb portion, the applicant of the present application proposes to increase the handling force by reducing the handling port 6a of the handling member 6, for example, as shown in FIG. However, in this case, as shown in FIG. 12B, when the container body is pulled out in the Y direction, the base of the bristle 3a ′ comes into contact with the handle 6a, and as shown in FIG. If 'is alternately bent from the root, the bristle 3a' may be scattered and spread.

  This invention is made | formed in view of this situation, and it aims at providing the applicator for cosmetics which can prevent that a bristle scatters and spreads.

The cosmetic applicator according to the present invention is provided in the outer peripheral surface of the tip portion of the cylindrical shaft body along the longitudinal direction, and in the tip portion of the shaft body in communication with the slit. A shaft portion having a mounting portion; a plurality of bristles that pass through the slit and project beyond the outer peripheral surface; and a base member that is integrally formed with the bristles and holds the base portion of the bristles And a comb portion formed separately from the shaft portion, wherein the comb portion is assembled to the shaft body with the base member inserted and fitted into the mounting portion. To do.

The cosmetic applicator according to the present invention has a portion in which the shaft portion has an outer peripheral surface in which the slit is formed and an outer peripheral surface on the opposite side of the portion, for applying cosmetics to the outer peripheral surface. It is divided | segmented into the application part which has an application groove | channel, and the space used as the said mounting part may be formed between the both parts of this axial part.

In this case, the application portion and the shaft main body each have an engaging portion that engages with each other, and the comb portion is sandwiched from above and below by the shaft main body and the application portion, and It is preferable that the application part and the shaft main body are detachably fixed by the engagement part.

In addition, it is preferable that the said application part has a convex part in the side contact | abutted with the lower surface of the said base member.

In the cosmetic applicator according to the present invention, the shaft portion includes an application groove for applying cosmetic material on an outer peripheral surface of the tip portion of the shaft main body, and the mounting portion at the tip of the shaft main body. The comb portion may be assembled to the shaft main body by being inserted and fitted into the mounting portion when the base member is inserted in the longitudinal direction from the opening. .

In this case, it is preferable that the shaft main body and the base member have engaging portions that engage with each other, and are fixed by the engaging portions.

In the cosmetic applicator of the present invention, the bristle may have a rounded round cross section or an elliptical cross section.

In the cosmetic applicator of the present invention, the bristle may have a taper formed with a sharp shape.

  In the cosmetic applicator of the present invention, the distance from the base end of the bristle to the outer peripheral surface is preferably 0.5 mm or more, and more preferably 0.5 to 2.0 mm.

  In the cosmetic applicator of the present invention, the plurality of bristles preferably have a gap between the bristles in the longitudinal direction of 0.1 to 2.0 mm, and preferably 0.2 ± 0.02 mm. Further preferred.

  Moreover, as for the applicator for cosmetics of this invention, it is preferable that the said some bristle protrudes 2-5 mm from the said outer peripheral surface.

  In the cosmetic applicator of the present invention, the plurality of bristles preferably have a total length of 3 to 6 mm.

  In the cosmetic applicator of the present invention, the plurality of bristles are preferably formed with a thermoplastic elastomer as a main component, and the thermoplastic elastomer is more preferably a polyester elastomer. In the present invention, the plurality of bristles may contain inevitable impurities.

According to the cosmetic applicator of the present invention, on the outer peripheral surface of the tip of the cylindrical shaft body, the shaft portion having one or more slits formed along the longitudinal direction, and at least along the longitudinal direction A plurality of bristles arranged in a row and projecting beyond the outer peripheral surface of the shaft main body from the inside of the slit , the base end of each bristle may be located at a position lower than the outer peripheral surface of the shaft main body The base end of each bristle does not come into contact with the handling member formed on the main body of the container when the front end of the shaft portion to which cosmetics adhere is pulled out from the main body of the container, thereby reducing the load on the base end of the bristle. be able to.

  Thereby, when pulling out the shaft portion from the container main body, it is possible to prevent the bristle from being bent from the root alternately by the handling member, so that the bristle can be prevented from being scattered and spread.

  Hereinafter, a cosmetic applicator according to an embodiment of the present invention will be described in detail with reference to the drawings. In the present embodiment, a mascara applicator is described as an example of a cosmetic applicator, but the present invention is not limited to this, and can be applied to, for example, an eyebrow applicator applied to eyebrows. 1 is a side view of the mascara applicator 1 of the present embodiment, FIG. 2 is an exploded view of FIG. 1, FIG. 3 is a cross-sectional perspective view taken along line AA of FIG. 1, and FIG. FIG. 5 shows another embodiment of the bristle, and FIG. 6 shows a view of pulling out the tip of the mascara applicator 1 from the container body. In FIG. 1 to FIG. 4, the side where the tip of the bristle 3 a is located, that is, the upper side on the paper surface will be described below for convenience.

  As shown in FIG. 1, the mascara applicator 1 of this embodiment includes a shaft portion 2, a comb portion 3, an applicator portion 4, and a cap 5.

As shown in FIG. 2, the shaft portion 2 includes a substantially cylindrical shaft body 2 a, and an opening portion that opens along the longitudinal direction at the distal end side of the shaft body 2 a and is attached with a coating portion 4 described later. 2b and an opening 2b, and as shown in FIG. 3, it has a mounting part 2c to which a base member 3b of a comb part 3 to be described later is mounted, and further communicates with the mounting part 2c to connect the tip of the shaft body 2a. A slit 2d extending along the longitudinal direction is provided on the outer peripheral surface of the portion.

The depth d of the slit 2d is 100 times the tip side of the mascara applicator 1 on the container body (not shown) in which the handling member 6 (see FIG. 12) described in [Problems to be Solved by the Invention] is formed. In the bristle 3a, which will be described later, when the d is 0.2 mm, there is some scattering, and when d is 0.5 mm, no scattering occurs, so that it is preferably 0.5 mm or more. It is preferable that it is 2 mm or less so that the diameter of 2a does not become too large. Accordingly, the depth d of the slit 2d is in the range of 0.5 to 2 mm, in this embodiment, 0.5 mm.

  A cap 5 that can be opened and closed is connected to the rear end of the shaft main body 2a in an opening of a container main body (not shown) containing mascara liquid. The cap 5 is used as a handle to be held by a user. It is configured to be possible. The handling member 6 (see FIG. 12) is formed on the container body.

  The shaft portion 2 is formed by, for example, injection molding or the like with any one of PBT (polybutylene terephthalate), PA (polyamide), and PP (polypropylene) as a main component, and the material depends on the cosmetic ingredients. It is selected appropriately.

  The comb part 3 is for removing the so-called “dama”, which is a lump of mascara liquid, for the eyelashes to which the mascara liquid has been applied, or for spreading the eyelashes that have stuck together one by one. It is made of polyester thermoplastic elastomer (TPE: Thermoplastic Elastomer) as a main component, for example, by injection molding, etc., and is easy to injection, extrusion, blow, etc., fatigue resistance, chemical resistance, rubber Since it has the characteristics of both engineering plastics, specifically, Toyobo Co., Ltd. Perprene (registered trademark) P-280B and / or E-450B is used as a material. The material used for the comb portion 3 will be described in detail later.

  As shown in FIGS. 1 to 3, the comb portion 3 has a plurality of bristles 3a arranged in a line in the longitudinal direction, the plurality of bristles 3a arranged vertically, and holds the bases of the plurality of bristles 3a. The base member 3b is a rectangular parallelepiped.

  As shown in FIG. 4, the cross-section of each bristle 3a is formed in a circular shape with a diameter A1 = 0.2 mm, for example, and if the total length L is too long, the resin does not turn around a part of the molded product. A phenomenon in which a part of the molded product is missing becomes a so-called short mold, so it is difficult to mold due to the restriction of the diameter of the mascara applicator 1, and if it is too short, it will not reach the eyelashes and the usability will be reduced. ing.

  And as shown in FIG. 4, the gap | interval D of each bristle 3a in a longitudinal direction is formed by 0.1-2.0 mm, Preferably it is formed by 0.2 +/- 0.02 mm. In this way, although there are individual differences, the thickness of a person's eyelashes is generally about 0.15 mm, so when combing the eyelashes with the comb portion 3, only one eyelash is in the gap D of the bristle 3a. Because it does not enter, you can comb the eyelashes one by one.

  The bristle 3a of the present embodiment has a circular cross section as described above. However, the present invention is not limited to this, and a direction substantially perpendicular to the arrangement direction of the plurality of bristle 3a, i.e., coating. As shown in FIG. 5A, for example, the width A2 is 0.2 mm, and the width A3 in a direction substantially perpendicular to the width is 0.3 mm or 0.4 mm. 5B, for example, a bristle having an elliptical cross section having the same dimensions as described above may be used, and a bristle having a diamond or triangular cross section may be used. Also good.

  Moreover, although the bristle 3a of this embodiment was made into the straight shape whose cross-sectional shape does not change from an upper end to a lower end, this invention is not limited to this, The bristle which has the taper formed in the acute shape may be sufficient.

  The application part 4 is for applying mascara liquid to the eyelashes, and is formed by, for example, injection molding with one of PBT (polybutylene terephthalate), PA (polyamide), and PP (polypropylene) as a main component. The material is appropriately selected according to the cosmetic ingredients.

  The application section 4 has a substantially semicircular cross section as shown in FIG. 3, and extends in the longitudinal direction with a length that can be attached to the opening 2b of the shaft body 2 as shown in FIGS. Is formed. As shown in FIG. 3, a plurality of coating grooves 4a formed along the circumferential surface in a direction substantially perpendicular to the longitudinal direction are arranged at the lower end of the coating part 4 along the longitudinal direction. Further, at the upper end of the application part 4, one or more convex parts 4b protruding from the upper surface are formed along the longitudinal direction.

Next, a method for assembling the shaft part 2, the comb part 3, and the application part 4 will be described. First, as shown in FIG. 3, the base member of the comb portion 3 from the lower side of the shaft body 2a so that the plurality of bristles 3a protrude from the inside of the slit 2d of the shaft body 2a beyond the outer peripheral surface of the shaft body 2a. 3b is inserted into the mounting portion 2c so that the base end of each bristle 3a is positioned lower than the outer peripheral surface of the shaft body 2a. At this time, as shown in FIG. 3, the depth d of the slit 2d is 0.5 mm, and the upper surface of the base member 3b comes into contact with the upper surface of the mounting portion 2c. The distance to the surface is 0.5 mm.

  Thus, when the base end of each bristle 3a is positioned lower than the outer peripheral surface of the shaft body 2a, as shown in FIG. 6, when the distal end portion of the shaft portion 2 to which the mascara liquid adheres is pulled out from the container body. Since the base end of each bristle 3a does not contact the handling port 6a of the handling member 6, the load applied to the base end of the bristle 3a can be reduced.

  Thereby, when pulling out the shaft part 2 from the container main body, the bristle 3a can be prevented from being bent alternately from the root by the handling member 6, so that the bristle 3a can be prevented from spreading and spreading.

  Next, the application part 4 is attached to the opening 2b from the lower side of the shaft part 2 with the convex part 4b facing upward. For example, the application portion 4 and the shaft body 2a are detachably fixed by engaging portions (not shown) that are respectively formed in an uneven shape and engage with each other. The application unit 4 and the shaft body 2a may be further welded by ultrasonic welding, high frequency welding, or the like. As shown in FIG. 3, the comb portion 3 has an upper surface of the base member 3b abutted against the upper surface of the mounting portion 2c and a lower surface abutted with the upper end of the convex portion 4b. It is gripped from both sides. The mascara applicator 1 of this embodiment is assembled as described above.

  According to the mascara applicator 1 of the present embodiment configured as described above, the base end of each bristle 3a can be positioned lower than the outer peripheral surface of the shaft main body 2a, and the mascara liquid is discharged from the container main body. Since the base end of each bristle 3a does not come into contact with the handling port 6a of the handling member 6 formed in the container body when the tip end of the attached shaft portion 2 is pulled out, the load applied to the base end of the bristle 3a is reduced. Can do.

  Thereby, when pulling out the shaft part 2 from the container main body, the bristle 3a can be prevented from being bent alternately from the root by the handling member 6, so that the bristle 3a can be prevented from spreading and spreading.

  Next, the results of comparing the mascara applicator 1 and the conventional mascara applicator 1 'by changing the material used for the comb portion 3 will be described.

  FIG. 7 shows a mascara applicator 1 having a comb portion 3 formed using PBT (polybutylene terephthalate), PA (polyamide resin) such as nylon, and a polyester thermoplastic elastomer as materials, and the comb portion 3. As shown in FIG. 12, a conventional mascara applicator 1 ′ in which the base end of a bristle 3a ′ is erected from the outer peripheral surface of the shaft main body 2a ′ is used as a container main body on which a handling member 6 is formed. The result of the scattering of the bristle 3a and 3a ′ when it is taken in and out 100 times is shown.

  As specific materials, PBT is Novaduran (registered trademark) 5010TRX5 manufactured by Mitsubishi Engineering Plastics Co., Ltd., PA is Leona (registered trademark) nylon 66 fiber 1300S manufactured by Asahi Kasei Chemicals, and Perprene (registered trademark) manufactured by Toyobo Co., Ltd. P-280B was used, and the bristle 3a and 3a 'were each formed with a taper. In addition, the bristle in FIG. 7 was taken at a magnification of 50 ° from an angle of 45 °. In FIG. 7, the cross mark, triangle mark, round triangle mark, and circle mark indicate in order of increasing scattering.

As shown in the table of FIG. 7, in the comb portion 3 of the conventional mascara applicator 1 ′ having no slit 2d in the shaft portion 2, no matter whether PBT, PA, or a polyester-based thermoplastic elastomer is used, the bristle is used. Scattering has occurred in 3a '.

On the other hand, in the comb portion 3 of the mascara applicator 1 having the slit 2d of the present invention, when the PBT or PA material is used, the bristle 3a is scattered, but the polyester-based thermoplastic elastomer, that is, Toyobo When Perprene (registered trademark) P-280B manufactured by Co., Ltd. was used, no scattering occurred.

  As a material used for the comb part 3 by the above, it is preferable to use a polyester-type thermoplastic elastomer.

  Further, in the mascara applicator 1, the shaft portion 2 is preferably formed of a relatively hard material, but the comb portion 3 is formed of a material that is easily bent in order to handle the mascara liquid adhering to the bristle 3a. It is preferable. Then, the comb part 3 was formed with the material which changed the grade of the perprene (trademark), and it put in and out of the container main body 100 times similarly to the above, and compared for every material. FIG. 8 shows the comparison result. As grades, P-150B, P-280B, and E-450B were used in descending order of hardness.

  As shown in the table of FIG. 8, in the comb portion 3 of the conventional mascara applicator 1 ′, the bristle 3 a ′ was scattered regardless of which grade of perprene (registered trademark) was used. In the comb part 3 of the mascara applicator 1 of the present invention, the hardness is low in the above grade, the surface hardness measured by the ASTM D2240 test method is 57D, and the flexural modulus measured by the ASTM D790 test method is 289 MPa. Only when a certain P-150B material was used, the bristle 3a was scattered, but it had a medium hardness, the surface hardness was 68D, and the bending elastic modulus was 494 MPa, and the P-280B material had a high hardness. Yes, no scattering occurred when the E-450B material having the surface hardness of 78D and the flexural modulus of 1267 MPa was used.

  In addition, as shown in the table of FIG. 8, P-150B has bristle 3a and 3a 'that are slightly less elastic, that is, less flexible, and it is difficult to open the mold at the time of molding. From the viewpoint of easiness, P-280B and / or P-450B are considered preferable as a material.

  As a material used for the comb part 3 as described above, the surface hardness is preferably 60D or more, and the flexural modulus is preferably 400 MPa or more.

  The comb portion 3 of the mascara applicator 1 of the present embodiment is formed using a polyester-based thermoplastic elastomer, but the present invention is not limited to this, and for example, a polyamide-based thermoplastic elastomer is used. May be. Specifically, Daicel PAX (registered trademark) manufactured by Daicel Tegusa Co., Ltd. or Bevacs (registered trademark) manufactured by Arkema-Tokyo Materials Co., Ltd. can be used.

  Next, the mascara applicator 1-2 according to the second embodiment of the present invention will be described in detail with reference to the drawings. In the mascara applicator 1 of the above embodiment, the comb portion 3 and the applicator portion 4 are formed as separate parts. However, in the mascara applicator 1-2 of this embodiment, the applicator portion 4 is the shaft body 2a. And are formed integrally. Here, FIG. 9A is a cross-sectional perspective view of the main part of the mascara applicator 1-2 of the present embodiment, FIG. 9B is an example of a side cross-sectional view of the main part of the mascara applicator 1-2, and FIG. FIG. 10A is a perspective view of a main part of a comb part according to another embodiment, and FIG. 10B is a front view of FIG. In FIG. 9, the same parts as those in the above embodiment are indicated by the same reference numerals and the description thereof is omitted.

As shown in FIG. 9, the mascara applicator 1-2 of the present embodiment has an application groove 2e as an application portion formed on the outer peripheral surface of the lower end, which is the outer peripheral surface other than the slit 2d of the shaft body 2a.

  The mascara applicator 1-2 in which the application groove 2e is formed in the shaft main body 2a in this way is provided with an opening communicating with the mounting portion 2c at the tip of the shaft main body 2a, for example, and the base member 3b of the comb portion 3 from the opening. The comb portion 3 may be assembled to the shaft body 2a by inserting and sliding in the longitudinal direction. In this case, as shown in FIG. 9B, hooks 3c and 2f that engage with each other may be provided and fixed to the rear end of the base member 3b in the insertion direction and the tip of the shaft body 2a.

  Further, as shown in FIGS. 10 (a) and 10 (b), a plurality of protrusions 3d having sharp edges at the lower ends and projecting outward are provided on both side surfaces of the comb portion 3 along the longitudinal direction. The shaft member 2b may be inserted into 2c from the upper end, and the shaft body 2a and the base member 3b may be fixed by the protrusion 3d.

  Further, in the present embodiment, the shaft body 2a and the base member 3b may be welded by ultrasonic welding, high frequency welding, or the like.

  In addition, you may form the above mascara applicator 1-2 comprised with the axial part 2 and the comb part 3 by insert-molding the axial part 2 and the comb part 3. FIG.

  Next, a mascara applicator 1-3 according to a third embodiment of the present invention will be described below with reference to the drawings. Here, FIG. 11 shows a cross-sectional side view of the main part of the mascara applicator 1-3 of the present embodiment.

  Unlike the mascara applicator 1-2 of the above-described embodiment, the mascara applicator 1-3 of the present embodiment forms an application groove 3e as an application part in the comb portion 3, as shown in FIG. The comb portion 3 formed in this way is integrally formed with the shaft portion 2 by two-color molding, and can be formed by, for example, vacuum injection molding or the like. The shaft portion 2 and the comb portion 3 may be integrally formed by using, for example, injection molding or the like with a polyester-based or polyamide-based thermoplastic elastomer as a main component.

In the mascara applicators 1-2 and 1-3 of the second and third embodiments as described above, the depth d of the slit 2d is 0.5 as in the mascara applicator 1 of the first embodiment. It is formed in a range of ˜2 mm.

In the above-described embodiment, the slit 2d is formed in the shaft body 2a. However, the present invention is not limited to this, and the base end of the bristle 3a can be positioned lower than the outer peripheral surface of the shaft body 2a. Any shape may be used as long as it is a slit .

In the above-described embodiment, one slit 2d is formed in the shaft body 2a, and one row of bristles 3a is arranged in the slit 2d. However, the present invention is not limited to this, and the base end of the bristle 3a is the shaft body. as long as it can be located lower than 2a the outer peripheral surface of, for example, the width in the circumferential direction of the slit 2d, a plurality (e.g., two rows) of the bristles 3a along the slit 2d may be arranged, along slit 2d in the longitudinal direction to form two or more may be arranged in a line the bristles 3a in the respective slits 2d.

  The cosmetic applicator of the present invention is not limited to the mascara applicator of the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

Enlarged view of main parts of mascara applicator Exploded view of the mascara applicator of FIG. AA line cross-sectional perspective view of the mascara applicator of FIG. Combustion main part enlarged perspective view Diagram representing another embodiment of a bristle Drawing the tip of the mascara applicator from the container body The figure which shows the result of the scattering of the bristle for each material in the mascara applicator of the present invention and the conventional mascara applicator Results table of bristle breakage for each grade of Perprene (registered trademark) in the mascara applicator of the present invention and the conventional mascara applicator Sectional perspective view and sectional side view of mascara applicator of second embodiment Example of perspective view and front view of comb part Cross-sectional side view of the mascara applicator of the third embodiment The figure explaining the subject in the conventional mascara applicator

1 Mascara applicator (cosmetic applicator)
2 Shaft portion 2a Shaft body 2b Opening portion 2c Mounting portion 2d Slit 3 Comb portion 3a Bristle 3b Base member 4 Application portion 4a Application groove

Claims (11)

A shaft portion having a slit formed along the longitudinal direction on the outer peripheral surface of the tip portion of the cylindrical shaft body, and a mounting portion provided in the tip portion of the shaft body in communication with the slit;
A plurality of bristles that pass through the slit and project beyond the outer peripheral surface from the inside of the shaft part, and a base member that is integrally formed with the bristles and holds the base part of the bristle, and is separate from the shaft part A comb portion formed,
The shaft part is divided into a part having an outer peripheral surface in which the slit is formed and an application part having an outer peripheral surface opposite to the part and an application groove for applying cosmetics to the outer peripheral surface; A space to be the mounting portion is formed between both portions of the shaft portion,
The comb part is a cosmetic applicator characterized in that the base member is inserted and fitted into the mounting part and assembled to the shaft body. The cosmetic applicator according to claim 1 , wherein the applicator has a convex portion on a side in contact with the lower surface of the base member. The application part and the shaft main body each have an engaging part that engages with each other,
The comb portion is sandwiched from above and below by the shaft main body and the application portion, and the application portion and the shaft main body are detachably fixed by the engagement portion. The cosmetic applicator according to claim 1 or 2 . The cosmetic applicator according to any one of claims 1 to 3 , wherein the bristle has a rounded round cross section. The cosmetic applicator according to any one of claims 1 to 3 , wherein the bristle has an elliptical cross section. The cosmetic applicator according to any one of claims 1 to 3 , wherein the bristle has a taper formed with a sharp shape. The cosmetic applicator according to any one of claims 1 to 6, wherein a distance from a base end of the bristle to the outer peripheral surface is 0.5 mm or more. The cosmetic applicator according to any one of claims 1 to 6, wherein a distance from a base end of the bristle to the outer peripheral surface is 0.5 to 2.0 mm. The cosmetic applicator according to any one of claims 1 to 8 , wherein in the plurality of bristles, a gap between the bristles in the longitudinal direction is 0.1 to 2.0 mm. The cosmetic applicator according to any one of claims 1 to 9 , wherein the plurality of bristle protrudes from the outer peripheral surface by 2 to 5 mm. The cosmetic applicator according to any one of claims 1 to 10 , wherein the plurality of bristles are formed mainly of a thermoplastic elastomer.