JP2009240573A - Bristle material for cosmetic brush and cosmetic brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bristle material for a cosmetic brush which is excellent in containing condition of cosmetics and in application performance, and has a good feel to the skin, and to provide a cosmetic brush. <P>SOLUTION: The bristle material for the cosmetic brush includes a complex monofilament bristle having two or more protruding parts continuously at least a part of which is buried in a fiber axis direction of a body part and the other part of which protrudes from a fiber surface of the body part in the side face outer peripheral longitudinal direction of a body part. At least at one end of the bristle, a taper part is formed by liquid medicine processing, and, in the longitudinal direction of the taper part, there is a recessed part formed by dissolution of the protruding parts. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hair brush and a makeup brush for a cosmetic brush that are excellent in cosmetic inclusion and application performance, and also have a good feel to the skin.

  Conventionally, animal hairs such as goats, squirrels and weasels have been used extensively as hair materials for cosmetic brushes, but in recent years it has become difficult to procure animal hair, and instead of this, nylon and polybutylene terephthalate are used. The used synthetic brush hair material made of synthetic resin is used, and its demand is increasing.

  As the cross-sectional shape of this synthetic resin hair material, a straight monofilament with a round cross section is generally tapered, but this has a smoother surface than animal hair, so that the cosmetic powder is Since it is difficult to adhere to the brush, the cosmetic powder is poorly contained and there is a problem in application performance such as uneven application, and the hair material is hard and inferior in touch.

  As a technique for improving these problems, a synthetic resin hair material (see, for example, Patent Document 1) in which a plurality of concave and convex portions are formed in the cross-sectional shape of a synthetic resin hair material is already known.

However, the synthetic resin hair material obtained by this means is improved in the cosmetic brush cosmetic powder content and application performance and skin feel compared to conventional ones, but has a retaining property. However, the improvement performance is still not sufficient, because it is difficult to remove, and the use of hair and hips is required. There has been a demand for the realization of a synthetic resin hair brush for cosmetic brushes with sufficiently comparable performance.
Japanese Patent No. 1545642

  The present invention has been achieved as a result of studying the solution of the problems in the prior art described above as an issue.

  Therefore, the object of the present invention is superior to the conventional synthetic resin bristle material for cosmetic brushes, with excellent cosmetic content and application performance, good skin feel, and performance comparable to animal hair. A synthetic resin-made hair material for a makeup brush and a makeup brush.

In order to achieve the above object, according to the present invention, at least a portion of the ridge portion embedded in the main body fiber axis direction and the other portion protruding from the main body fiber surface is provided in the longitudinal direction of the outer periphery of the side surface of the main body portion. A bristle material for a makeup brush comprising a composite monofilament bristles continuously having two or more strips, and at least one end of the bristles is formed with a tapered portion by chemical treatment, and in the longitudinal direction of the tapered portion. There is provided a bristle material for a makeup brush, characterized in that it has a concave portion formed by melting the convex portion.
In the cosmetic brush hair material of the present invention, the composite monofilament is composed of a synthetic resin having a high chemical solution dissolution rate in the ridges and a resin having a chemical solution dissolution rate slower than the synthetic resin in the ridges in the main body. It is mentioned as preferable conditions that it is comprised.

  The cosmetic brush of the present invention is characterized in that the cosmetic brush hair material is used as at least a part of the hair material.

  According to the present invention, as will be described below, the cosmetics containment and application performance are superior to conventional synthetic resin cosmetic brush hair materials, have good skin feel, and are comparable to animal hair. Synthetic resin-made hair materials for decorative brushes and decorative brushes having the performance that can be obtained can be obtained.

  Hereinafter, the hair material for a cosmetic brush and the cosmetic brush of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view showing an example of a bristle material for a cosmetic brush according to the present invention, and FIGS. 2A and 2B are an enlarged sectional view taken along line II and an enlarged line JJ in FIG. Reference numeral 1 denotes a cosmetic brush bristle material, 2 denotes a monofilament body portion, 3 denotes a convex strip portion, 4 denotes a concave strip portion, 5 denotes a tapered portion, 6 denotes a straight portion, and c denotes an outer diameter of the main body portion.

  As shown in FIG. 1, the bristle material 1 for a cosmetic brush according to the present invention has at least a portion embedded in the fiber axis direction of the main body portion 2 and the other portion protruding from the fiber surface of the main body portion 2. 3 is composed of a composite monofilament bristle continuously having two or more strips 3 in the longitudinal direction of the side surface of the main body 2. A tapered portion 5 is formed on at least one end of the straight portion 6 of the bristle. And the taper part 5 has the groove part 4 which the said protrusion part 3 melt | dissolved quickly at the stage in which the taper part 5 is formed by a chemical | medical solution process, It is characterized by the above-mentioned.

  That is, by forming the concave strip portion 4 formed by melting the convex strip portion 3 in the taper portion 5, the soft feel when using the makeup brush is improved, and the cosmetics retainability is excellent. Can provide an improved makeup brush. On the other hand, since the protruding portion 3 remains on the straight portion 6 as it is and part of the resin performance selected by the protruding portion 3 is given, the problem of fur and waist that has been lacking in the straight portion so far is reinforced. These performances can be improved at once.

  In the bristle material 1 for a toothbrush of the present invention, the material selection of the monofilament main body 2 and the convex portion 3 is important, and the ridge portion 3 has a high dissolution rate with respect to a chemical solution used for chemical chemical treatment described later. On the other hand, it is important to use a composite monofilament composed of a synthetic resin and a synthetic resin having a slower chemical solution dissolution rate than the synthetic resin of the ridge portion 3 for the main body portion 2.

  Moreover, although the diameter of the protruding item | line part 3 is not specifically limited, It is preferable that a diameter exists in the range of 0.01-0.04 mm. By making these, the cosmetics can be easily retained, and when applied, the cosmetics are not discharged at once, and a uniform and durable application effect is more exhibited.

  Here, the outer diameter c of the main body of the cosmetic brush hair material 1 of the present invention can be appropriately selected according to the type of the cosmetic brush, but the touch to the skin required for the cosmetic brush is taken into consideration. Then, it is preferable that it is the range of 0.05-0.25 mm, and it is more preferable that it is the range of 0.07-0.20 mm.

  In addition, as a specific combination of the synthetic resin of the main body portion 2 and the ridge portion 3 used for the cosmetic brush hair material 1 of the present invention, the chemical solution used for the chemical chemical treatment is an alkaline chemical solution such as a sodium hydroxide solution. In this case, as the combination of the main body portion / projection strip portion, polybutylene terephthalate (hereinafter referred to as PBT) / polyethylene terephthalate (hereinafter referred to as PET), PBT / polyethylene naphthalate, PBT / polyester elastomer, PBT / polypropylene terephthalate (Hereinafter referred to as PTT), PET / polyester elastomer, etc., and when the chemical used for chemical chemical treatment is an acidic chemical such as hydrochloric acid, polyamide 6/10 / polyamide elastomer, polyamide 6 / polyamide elastomer, etc. Combination It is not limited to the above, and can be selected as appropriate. In particular, the makeup brush when the synthetic resin of the ridge portion 3 is selected to be harder than the main body portion 2 maintains the soft feel of the tip. However, it is possible to produce a makeup brush having a bristle at the base of the brush. On the other hand, if the synthetic resin of the ridge portion 3 is made softer than the main body portion 2, it is possible to produce a makeup brush with a softer feeling as a whole, so a combination is appropriately selected according to the type of makeup brush can do.

  In addition, as long as the object of the present invention is not hindered, a heat-resistant agent, an antistatic agent, an ultraviolet absorber, a plasticizer can be applied to the synthetic resin constituting the main body part 2 and the ridge part 3 of the composite monofilament according to the object. Various conventional additives such as additives, antioxidants, antibacterial agents, dyes and pigments can be optionally contained.

  Next, an example of the manufacturing method of the bristle material 1 for cosmetic brushes of this invention is demonstrated. For example, a synthetic resin constituting the main body portion 2 of the composite monofilament and a synthetic resin constituting the ridge portion 3 can be produced by a known composite melt spinning method, and after cooling and extruding from a nozzle, cooling and stretching After passing through the process and heat-setting as necessary, it is wound up once and this composite monofilament is cut into a desired length to form a cut bristle.

  Further, at least one end of the obtained cut bristle bundle is subjected to a chemical treatment in which the cut bristle bundle is immersed in a chemical solution such as an acid or an alkali solution, so that the ridge portion 3 is first dissolved at the stage of forming the tapered portion 5. A taper portion 5 having a concave groove portion 4 is formed, and a bristle material for a cosmetic brush having a taper portion 5 having a cross-sectional shape different from that of the straight portion 6 can be obtained.

  The cosmetic brush of the present invention using the bristle material 1 for a cosmetic brush obtained by the above production method can be produced by a known method, and the production method is not particularly limited.

  Hereinafter, the present invention will be further described with reference to examples. The evaluation of hair materials in the examples was performed by the following method.

[Coating performance]
Fifteen adult women were asked to apply powder cosmetics (ivy cosmetics: face color powder) to their skin using animal hair face brushes and the face brushes produced in the examples and comparative examples. Based on the following criteria, an answer was obtained about the condition of the cosmetic powder in the makeup brush and the occurrence of uneven spots on the skin.
Judgment:
◎ ... The amount of cosmetic powder contained was greater than the one using animal hair, and there were fewer application spots.
○: The cosmetic powder content and application spots were similar to those of animal hair.
Δ: The amount of cosmetic powder contained was less than that of animal hair, and there were many application spots.
X: The cosmetic powder was much worse than the animal hair, and the coating spots were significantly worse.

[Skin feel]
Simultaneously with the evaluation of the application performance of the cosmetics, an answer was also obtained regarding the touch to the skin based on the following criteria.
Judgment:
1 ... The feel was superior to that using animal hair.
2 ... The feel was the same as that using animal hair.
3 ... Slightly inferior to those using animal hair, but no problem in practical use.
4. The skin was less irritating and less flexible than the one using animal hair, and the touch was not good.

[Example 1]
A PBT resin (1200S manufactured by Toray Industries, Inc.) was used as a synthetic resin to be a monofilament main body, and a polyethylene terephthalate resin (T301T manufactured by Toray Industries, Inc.) was used as a synthetic resin to be a protrusion.

  By supplying these synthetic resins to a composite spinning machine, and after melting and extruding in the spinning machine, cooling and stretching, a cross-sectional shape as shown in Table 1 (outside diameter of main body part 0.10 mm, number of protruding parts 4, A monofilament having a ridge diameter of 0.02 mm was obtained. Then, after the obtained monofilament was cut into a length of 50 mm, one end of the bristle bundle was tapered by an alkali dissolution method (taper length: 15 mm), and then a bristle material for a cosmetic brush was produced. Furthermore, the face brush was produced by planting this on the base.

[Example 2]
In Example 1, a face brush was produced in the same manner as in Example 1 except that the synthetic resin to be the ridges was changed to PEN (Toyobo Co., Ltd., PN550).

[Example 3]
In Example 1, a face brush was produced in the same manner as in Example 1 except that the synthetic resin to be the ridge portion was changed to a polyether elastomer resin (manufactured by Toray DuPont, Hytrel 7247).

[Comparative Example 1]
In Example 1, a face brush was produced in the same manner as in Example 1 except that the synthetic resin to be the main body part and the protruding line part was changed to PBT resin (1200S manufactured by Toray Industries, Inc.).

[Comparative Examples 2 and 3]
PBT resin (1200S manufactured by Toray Industries, Inc.) is supplied to a spinning machine, melt extruded, cooled and stretched, and monofilaments of 5-leaf cross-section yarn (outer diameter 0.10 mm) and round cross-section yarn (outer diameter 0.10 mm) Got. Then, after the obtained monofilament was cut into a length of 50 mm, one end of the bristle bundle was tapered by an alkali dissolution method (taper length: 15 mm), and then a bristle material for a cosmetic brush was produced. Furthermore, the face brush was produced by planting this on the base.

  Table 1 shows the evaluation results of the cosmetic brushes obtained in the above Examples and Comparative Examples.

  As is apparent from the results in Table 1, the cosmetic brush obtained by implanting the hair material for the cosmetic brush of the present invention has excellent cosmetic condition and application performance, has a good touch to the skin, and is suitable for animal hair. It is comparable and satisfactory in use.

  The cosmetic brush obtained by flocking the cosmetic brush hair material of the present invention is superior to the conventional synthetic resin cosmetic brush hair material in terms of the cosmetic content and application performance, and has a good skin feel. Because it is comparable to animal hair, it exhibits unprecedented synthetic resin makeup brush performance, and can be applied to various makeup brushes such as face brushes, cheek brushes, powder brushes, shadow brushes, and eyeliner brushes. The application of is greatly expected.

The front view which showed an example of the bristle material for makeup brushes of this invention. (A) And (b) is the II sectional expanded sectional view and JJ sectional enlarged sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hair material for makeup brushes 2 Monofilament body part 3 Convex part 4 Convex part 5 Taper part 6 Straight part

Claims (3)

A composite monofilament bristle having at least a portion embedded in the fiber axis direction of the main body, and two or more continuous protrusions protruding from the surface of the main body fiber in the longitudinal direction of the outer periphery of the main body. A hair brush for a makeup brush comprising: a taper portion is formed at least one end of the bristle by a chemical treatment, and the protrusion is dissolved in the longitudinal direction of the taper portion. A bristle material for a makeup brush, characterized by having a concave line portion. The composite monofilament is configured by using a synthetic resin having a high chemical solution dissolution rate for the ridge portion and a resin having a slower chemical solution dissolution rate than the synthetic resin for the ridge portion for the main body portion. The bristle material for makeup brushes as described. A cosmetic brush comprising the hair material for a makeup brush according to claim 1 or 2 as at least a part of the hair material.

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