JP4683431B2 - Brush hair material, brush product, and method for manufacturing brush hair material - Google Patents

Description

  The present invention relates to a bristle material for a brush made of a synthetic resin monofilament, a method for producing the same, and a brush product.

  Conventionally, animal hair has been widely used as a brush hair material such as a makeup brush, but in recent years, a brush hair material made of a synthetic resin monofilament called a bristle has been frequently used. Since the bristle material for brushes made of such a synthetic resin monofilament is linear, there is a problem that the skin feels hard and the hair separation property is not sufficient.

  For this reason, it has been proposed to impart a wave shape to the hair material for brush made of synthetic resin monofilament by a method of passing the monofilament between a pair of heating gears or a method of twisting the monofilament and heat setting. (For example, refer to Patent Document 1 and Patent Document 2).

  However, the hair material for brushes made of synthetic resin monofilaments obtained by these methods has a regular wave shape (wavelength is uniform), so it cannot be said that it exhibits animal-like skin texture. .

JP 2005-95457 A JP 11-235230 A

  The present invention has been made in view of the above background, and an object of the present invention is to provide a hair material for brushes made of synthetic resin monofilaments that exhibits the texture of animal hair, a manufacturing method thereof, and a brush product. .

  As a result of intensive studies to achieve the above object, the present inventor can impart an irregular wave shape by heat-treating a traveling synthetic resin monofilament while overfeeding the synthetic resin monofilament. It has been found that when a hair material for brushes is obtained using, the skin feels like animal hair. Further, the present invention has been conceived by further intensive studies.

Thus, according to the present invention, there is provided a “brush hair material made of synthetic resin monofilament, which has an irregular wave shape in the fiber axis direction”. However, the irregular wave shape means that the wavelength of the wave shape is not constant.
In that case, it is preferable that the said wavelength L exists in the range of 0.1-30 mm. Moreover, it is preferable that the waveform width W is in the range of 0.1 to 10 mm.

  In the brush bristle material of the present invention, the brush bristle material preferably has a diameter in the range of 0.02 to 0.2 mm. The total length LL of the bristle material for the brush is preferably in the range of 25 to 200 mm. The synthetic resin monofilament is preferably formed of polybutylene terephthalate. Moreover, it is preferable that the front-end | tip part of the bristle material for brushes is taper-processed. Moreover, it is preferable that the bristle material for brushes is colored. Moreover, it is preferable that the bristle material for brushes has been subjected to antistatic processing. Moreover, it is preferable that the unevenness | corrugation is provided to the surface of the bristle material for brushes by plasma irradiation or sandblasting.

According to the present invention, any brush product selected from the group consisting of a makeup brush, a makeup brush, a body brush, a brush, a paint brush, an industrial brush, and a toothbrush is provided.
Further, according to the present invention, "the traveling synthetic resin monofilament is heated in an overfeed rate of 12 to 50% and at a temperature of 180 to 210 ° C, whereby the synthetic resin monofilament is irregular in the fiber axis direction. A method for producing a bristle material for a brush, which is characterized by imparting a wave shape. " However, the irregular wave shape means that the wavelength of the wave shape is not constant.

  In that case, it is preferable that each wavelength L is measured along the fiber axis of the bristle material for brushes, and the ratio Lmax / Lmin between the maximum value Lmax and the minimum value Lmin of the wavelength L is 1.2 or more. Moreover, it is preferable that the said wavelength L exists in the range of 0.1-30 mm. Moreover, it is preferable that the waveform width W is in the range of 0.1 to 10 mm. Moreover, it is preferable that the diameter of the bristle material for brushes exists in the range of 0.02-0.2 mm.

  In the manufacturing method of the brush hair material of the present invention, after giving an irregular wave shape in the fiber axis direction of the synthetic resin monofilament, the brush hair material is cut so that the total length LL of the brush hair material is in the range of 25 to 200 mm. It is preferable. The synthetic resin monofilament is preferably formed of polybutylene terephthalate. Moreover, it is preferable to taper the front-end | tip part of the bristle material for brushes. Moreover, it is preferable to color the bristle material for brushes. Moreover, it is preferable to apply antistatic processing to the bristle material for brushes. Moreover, it is preferable to give an unevenness | corrugation to the surface of the bristle material for brushes by plasma irradiation or sandblasting.

  ADVANTAGE OF THE INVENTION According to this invention, the hair material for brushes which consists of a synthetic resin monofilament which exhibits the skin touch of animal hair tone, its manufacturing method, and a brush product are obtained.

Hereinafter, embodiments of the present invention will be described in detail.
In the brush bristle material of the present invention, it is important to have an irregular wave shape in the fiber axis direction. Such an irregular wave shape gives an animal hair-like skin feel. The conventional regular wave shape is not preferable because the skin texture of animal hair cannot be obtained. However, the irregular wave shape means that the wavelength of the wave shape is not constant. In particular, as schematically shown in FIG. 1, the individual wavelengths L are measured along the fiber axis of the bristle material for the brush, and the ratio Lmax / Lmin between the maximum value Lmax and the minimum value Lmin of the wavelength L is 1.2. Above (particularly preferably 10.0 or more) is preferable.

  Here, all the wavelengths L are preferably in the range of 0.1 to 30 mm. Moreover, it is preferable that it is all within the range of 0.1-10 mm as wavy width W (vertical distance of an adjacent peak part and trough part) shown in FIG. The ratio Wmax / Wmin between the maximum value Wmax and Wmin of the corrugated width W is preferably 1.2 or more (particularly preferably 10.0 or more).

  Moreover, as a diameter of the bristle material for brushes of this invention, it is preferable to exist in the range of 0.02-0.2 mm. Even if the diameter is smaller than 0.02 mm or larger than 0.2 mm, there is a fear that animal hair-like skin feel cannot be obtained.

In the bristle material for a brush of the present invention, the cross-sectional shape is not particularly limited, and a known cross-sectional shape such as a circle, a triangle, a flat shape, a hexagon can be adopted, and a hollow portion may be used. In addition, when the cross-sectional shape of the bristle material for brushes is not round but an irregular shape, the diameter of the circumscribed circle is taken as the diameter of the bristle material for brushes.
The full length LL of the brush bristle material of the present invention is preferably in the range of 25 to 200 mm. The full length LL is measured by the distance shown in FIG.

  As a synthetic resin for forming the bristle material for a brush of the present invention, a polyester resin is preferable in terms of heat setting properties and dyeability. As such a polyester resin, a polyethylene terephthalate-based polyester whose main repeating unit is ethylene terephthalate, a polybutylene terephthalate-based polyester whose main repeating unit is butylene terephthalate, and a polypropylene terephthalate-based polyester whose main repeating unit is propylene terephthalate are preferably exemplified. The third component may be copolymerized. Of these, polybutylene terephthalate is particularly preferable for imparting resilience to the brush hair material. For such synthetic resins, an antibacterial agent, micropore forming agent, cationic dyeing agent, anti-coloring agent, heat stabilizer, fluorescent whitening agent, matting agent may be used as necessary within the range not impairing the object of the present invention. In addition, one or more of coloring agents, antistatic agents, hygroscopic agents, inorganic fine particles and the like may be added.

The brush bristle material of the present invention can be produced by the following production method. That is, first, a synthetic resin monofilament is spun and drawn by a conventional method using the synthetic resin as described above. Next, the synthetic resin monofilament is used as a bundle of fibers (100 to 200,000) in a chamber (length: 1 to 3 m) heated to a temperature of 180 to 210 ° C. at a running speed of 2 to 15 m / min. By running at an overfeed rate of 12 to 50%, an irregular wave shape can be imparted in the fiber axis direction of the synthetic resin monofilament. The overfeed rate OF (%) is calculated by the following formula.
OF (%) = (V1-V2) / V1 × 100
However, V1 is the running speed (m / min) of the polyester monofilament at the chamber inlet, and V2 is the running speed (m / min) of the polyester monofilament at the chamber outlet.

Next, the brush-based hair material of the present invention is obtained by cutting the polyester monofilament having an irregular wave shape in the fiber axis direction into a predetermined length by a conventional method.
Since the hair material for brushes thus obtained has an irregular wave shape in the fiber axis direction, the hair material feels like animal hair.

  Moreover, in the bristle material for brushes, it is preferable that the tip portion of the bristle material for brushes is tapered. As a method of taper processing, the above-mentioned monofilaments are appropriately bundled and cut to a predetermined length, and then one end portion or both end portions of the bristle material are caustic soda bath having a concentration of 200 to 300 g / L and a temperature of 95 to 110 ° C. The method of immersing in 50 to 200 minutes is suitably exemplified. The caustic concentration and the immersion time are appropriately set within the above ranges depending on the use of the brush bristle material, that is, the material and diameter of the monofilament. In addition, it is preferable to perform a taper process after the said cut normally.

  In addition, it is preferable to color the brush bristle material by performing a normal dyeing process because a high-class feeling is exhibited. In addition, it is preferable to apply antistatic processing to the bristle material for the brush because it can prevent generation of static electricity. The antistatic agent used for such an antistatic process may be a normal one, and examples thereof include a copolymer polymer containing a polyoxyalkylene chain component, a polyether ester, a polyurethane system, and modified silicon.

  In addition, it is also preferable to give an animal hair-like skin texture by imparting irregularities to the surface of the brush hair material by plasma irradiation or sandblasting to resemble animal hair cuticles.

Further, the brush hair material may be subjected to water absorption using a water absorbing agent such as polyethylene glycol diacrylate or a derivative thereof, or a polyethylene terephthalate-polyethylene glycol copolymer.
In addition, although it is preferable to perform the said dyeing | staining process, provision of an unevenness | corrugation, and a water absorption process after the said cut, you may carry out before a cut.

  In addition, the brush product of the present invention is any brush product selected from the group consisting of a makeup brush, a makeup brush, a body brush, a brush, a paint brush, an industrial brush, and a toothbrush using the brush hair material. It is. Since these brush products use the brush bristle material described above, they exhibit an animal hair-like skin feel.

EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not limited at all by these. In addition, each physical property in an Example is measured with the following method.
(1) Measurement of Waveform Wavelength L As shown in FIG. 1, the length of the wavelength was measured in order from L1, L2, L3,. In addition, the edge part which is insufficient in the length for 1 wavelength was excluded.
(2) Measurement of Wavy Width W As shown in FIG. 1, W1, W2, W3,... Sequentially from the left end, and the wavy width W (the vertical distance between adjacent peaks and valleys was measured. .
(3) Skin Touch After obtaining a makeup brush using the obtained brush hair material, sensory evaluation was performed in the following three stages by three testers. 3rd grade: The texture of animal hair. 2nd grade: A touch of animal hair. 1st grade: Not a touch of animal hair.

[Example 1]
Using a polybutylene terephthalate (IV value 0.97, melting point 230 ° C.) resin chip, spinning by a usual melt spinning method (melting temperature 295 ° C.), and stretching to 4.4 times makes a monofilament (diameter 100 μm) Brush hair material) was obtained.

  Next, the monofilament bundle of 10,000 monofilaments was run at a traveling speed of 10 m / min through a chamber (length: 3 m) heated (dry heat) to a temperature of 200 ° C. with an overfeed rate of 30%. Heat-treated. Subsequently, the hair material for brushes was obtained by cutting so that full length LL might be set to 50 mm. The tip of the brush bristle material is immersed in a caustic soda bath at a concentration of 250 g / l and a temperature of 102 ° C. for 60 minutes to form a sharp taper shape with a sharp edge, and a light pink using a disperse dye. Stained in color.

The obtained brush bristle material had an irregular wave shape in the fiber axis direction as shown in FIG. 1, and the maximum value Lmax of the wavelength L was 15 mm, and the minimum value Lmin was 0.8 mm. . Moreover, the maximum value Wmax of the waveform width W was 5 mm, and the minimum value Wmin was 0.2 mm.
Next, after obtaining a makeup brush using the brush hair material, the skin feel was evaluated, and it was an animal hair-like skin feel (grade 3).

[Comparative Example 1]
In Example 1, it carried out similarly to Example 1 except not heat-processing a fiber bundle. The obtained brush hair material was straight and did not have a wave shape in the fiber axis direction. After obtaining a makeup brush using the brush hair material, the skin feel was evaluated. The skin was not touching (1st grade).

  ADVANTAGE OF THE INVENTION According to this invention, the hair material for brushes which consists of a synthetic resin monofilament which exhibits the skin touch of animal hair, the manufacturing method, and a brush product are provided, The industrial value is very large.

It is explanatory drawing for demonstrating the wavelength L and the width W of a waveform.

Explanation of symbols

  1: Brush hair

Claims (23)

A hair material for a brush made of synthetic resin monofilament, wherein the traveling synthetic resin monofilament is heat-treated under conditions of an overfeed rate of 12 to 50% and a temperature of 180 to 210 ° C. A bristle material for a brush characterized by being given an irregular wave shape in a direction.
However, the irregular wave shape means that the wavelength of the wave shape is not constant.   The individual wavelengths L are measured along the fiber axis of the bristle material for brushes, and the ratio Lmax / Lmin between the maximum value Lmax and the minimum value Lmin of the wavelength L is 1.2 or more. Hair material.   The bristle material for brushes according to claim 2, wherein the wavelength L is in the range of 0.1 to 30 mm.   The bristle material for brushes in any one of Claims 1-3 whose wavy width W exists in the range of 0.1-10 mm.   The bristle material for brushes in any one of Claims 1-4 whose diameter of the bristle material for brushes exists in the range of 0.02-0.2 mm.   The bristle material for brushes in any one of Claims 1-5 whose full length LL of the bristle material for brushes exists in the range of 25-200 mm.   The bristle material for brushes according to any one of claims 1 to 6, wherein the synthetic resin monofilament is formed of polybutylene terephthalate.   The bristle material for brushes in any one of Claims 1-7 by which the front-end | tip part of the bristle material for brushes is taper-processed.   The bristle material for brushes in any one of Claims 1-8 formed by coloring the bristle material for brushes.   The bristle material for brushes in any one of Claims 1-9 by which antistatic processing is given to the bristle material for brushes.   The bristle material for brushes in any one of Claims 1-10 by which an unevenness | corrugation is provided to the surface of the bristle material for brushes by plasma irradiation or sandblasting.   A brush product selected from the group consisting of a makeup brush, a makeup brush, a body brush, a brush, a paint brush, an industrial brush, and a toothbrush, comprising the brush hair material according to any one of claims 1 to 11. . It is characterized in that an irregular wave shape is imparted in the fiber axis direction of the synthetic resin monofilament by heat-treating the traveling synthetic resin monofilament under conditions of an overfeed rate of 12 to 50% and a temperature of 180 to 210 ° C. Method for producing brush hair material.
However, the irregular wave shape means that the wavelength of the wave shape is not constant.   The individual wavelengths L are measured along the fiber axis of the bristle material for the brush, and the ratio Lmax / Lmin between the maximum value Lmax and the minimum value Lmin of the wavelength L is 1.2 or more. A manufacturing method of hair material. The manufacturing method of the bristle material for brushes of Claim 14 whose said wavelength L exists in the range of 0.1-30 mm.   The manufacturing method of the bristle material for brushes in any one of Claims 13-15 whose wavy width W exists in the range of 0.1-10 mm.   The method for producing a brush hair material according to any one of claims 13 to 16, wherein the brush hair material has a diameter of 0.02 to 0.2 mm.   18. After applying an irregular wave shape in the fiber axis direction of the synthetic resin monofilament, the brush bristle material is cut so that the total length LL is within a range of 25 to 200 mm. Method for producing brush hair material.   The manufacturing method of the bristle material for brushes in any one of Claims 13-18 in which said synthetic resin monofilament is formed with a polybutylene terephthalate.   The method for manufacturing a brush hair material according to any one of claims 13 to 19, wherein the tip of the brush hair material is tapered.   The manufacturing method of the brush hair material in any one of Claims 13-20 which colors the brush hair material.   The manufacturing method of the bristle material for brushes in any one of Claims 13-21 which performs an antistatic process on the bristle material for brushes.   The manufacturing method of the bristle material for brushes in any one of Claims 13-22 which provides an unevenness | corrugation to the surface of the bristle material for brushes by plasma irradiation or sandblasting.

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