JP2009240574A - Brush bristle material for scalp massage and scalp massage brush - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brush bristle material for scalp massage and a scalp massage brush, having appropriate flexibility and frictional resistance at the bristle tip and having both of a superior scalp massaging effect preventing the damage of the scalp and a superior cleaning effect efficiently washing away sebum accumulated on the scalp and pores. <P>SOLUTION: This bristle material for the scalp massage is a cut bristle made of core-in-sheath composite monofilaments, wherein the core part is exposed at least to one end without being covered with the sheath part, and is formed with a tip end part with a diameter narrower than that of the bristle body part. The scalp massage brush using the bristle material is also provided. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a brush material for scalp massage and a scalp massage brush made of synthetic resin, and more particularly, has excellent flexibility and frictional resistance at the hair tip and does not damage the scalp. This invention relates to a scalp massage brush hair material and a scalp massage brush that combine the scalp massage effect and the excellent cleaning effect of efficiently washing off sebum deposited on the scalp and pores.

  Various methods for improving the massage effect of scalp massage brushes have been studied so far. For example, a hairbrush for hair washing and / or hair styling in which a synthetic resin bristle having a spherical body at the tip is planted on a brush base. (See, for example, Patent Document 1). However, this hairbrush has a problem that the bristle itself is hard, so that the scalp is strongly stimulated and the massage effect is inferior.

  As a supplement to such a drawback, a scalp massage brush (see, for example, Patent Document 2) which is a molded body made of an elastomer resin and has a protrusion having a specific shape at the brush tip is known. This scalp massage brush is used for shampooing and caring for the hair, but especially during shampooing, the cone-shaped projections made of an elastomer resin tend to damage the hair because it cuts the cuticle on the hair surface, Furthermore, the feeling of use was not satisfactory.

As described above, the conventional scalp massage brush performs its function well for shampooing and hair styling, but has a low feeling of use and an insufficient massage effect. There has been a strong demand for a brush hair material for scalp massage.
Japanese Utility Model Publication No. 54-87272 JP 2007-282682 A

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

  In other words, the object of the present invention is to have an excellent flexibility and frictional resistance on the hair tip, an excellent scalp massage effect that does not hurt the scalp, and an excellent cleaning to efficiently wash off sebum deposited on the scalp and pores An object of the present invention is to provide a scalp massage brush hair material and a scalp massage brush that combine effects.

  In order to achieve the above object, according to the present invention, a cut bristle made of a core / sheath composite monofilament is exposed at least at one end of the core without being covered with the sheath, and has a diameter smaller than that of the main body of the bristle. There is provided a brush hair material for scalp massage, characterized in that a tip portion is formed.

In the scalp massage brush hair material of the present invention,
The sheath of the core-sheath composite monofilament is made of a polyester resin and / or nylon resin, and the core is made of a thermoplastic elastomer resin;
The length of the tip is in the range of 0.5 mm to 5 mm;
The core of the core-sheath composite monofilament is made of a thermoplastic elastomer resin of HDD 40 to HDD 80 having a durometer type D hardness measured by a plastic durometer hardness test method of JIS-K-7215,
The sheath of the core-sheath composite monofilament is made of polyester resin, the core is made of nylon elastomer, and the sheath of the core-sheath composite monofilament is made of nylon resin, and the core is made of polyester elastomer. It is mentioned as a preferable condition. When these conditions are satisfied, further excellent performance is exhibited.

  The scalp massage brush of the present invention is characterized in that the scalp massage 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 hair tip has moderate flexibility and friction resistance compared to conventional scalp massage brush hair materials, and has an excellent scalp massage effect without damaging the scalp Thus, a scalp massage brush hair material and scalp massage brush having an excellent cleaning effect for efficiently washing off sebum deposited on the scalp and pores can be obtained.

  Hereinafter, the hair material for a scalp massage brush according to the present invention will be described with reference to FIG.

  FIG. 1 is a perspective view showing an example of a brush hair material for scalp massage according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, 1 is a brush hair material for scalp massage, 2 is a tip portion, 3 Indicates a body part, 4 indicates a sheath part, and 5 indicates a core part.

  Brush hair material for scalp massage that has moderate flexibility and frictional resistance at the hair tip and has excellent scalp massage effect that does not damage the scalp and excellent cleaning effect to wash off sebum deposited on the scalp and pores efficiently 1, the scalp massaging brush bristle material 1 of the present invention is made of a core-sheath composite monofilament cut bristle, and the core part 5 is not covered with the sheath part 4 at least at one end thereof. It is necessary that the tip 2 which is exposed to the surface and has a diameter smaller than that of the main body 3 of the bristle is formed.

  That is, if the tip 2 is not formed, the scalp is easily damaged, and it is difficult to obtain a massage effect, but by forming the tip 2 at one end, moderate flexibility and friction resistance are generated at the hair tip, An excellent scalp massage effect that does not hurt the scalp and a cleaning effect that efficiently removes sebum deposited on the scalp and pores can be obtained.

  In addition, the synthetic resin which comprises the brush hair material 1 for scalp massage of this invention may be the same as the sheath part 4 and the core part 5, and may be different, and is not specifically limited. Further, the type of synthetic resin to be used is not particularly limited.

  However, in order to enhance the massage effect and cleaning effect of the scalp massage brush hair material 1 of the present invention, the sheath portion 4 is made of a polyester resin and / or nylon resin, and the core portion 5 is a thermoplastic elastomer resin. More preferably, the sheath 4 is made of a polyester resin, the core 5 is made of a nylon elastomer, or the sheath 4 is made of a nylon resin, and the core 5 is more preferably made of a polyester elastomer.

  Here, examples of the polyester resin used in the sheath part 5 of the scalp massage brush hair material 1 of the present invention include polybutylene terephthalate, polytrimethylene terephthalate, polyethylene terephthalate, and polyethylene naphthalate. Use of polybutylene terephthalate, polytrimethylene terephthalate, or polyethylene terephthalate is preferable in that the portion 4 can be dissolved and the tip 2 can be easily formed.

  Specific examples of the nylon resin include nylon 6, nylon 11, and nylon 12 constituted by polycondensation reaction of ω amino acids, nylon 66 constituted by co-condensation polymerization reaction of diamine and dicarboxylic acid, and nylon 6 · 10. Or copolymers mainly composed of these, for example, nylon copolymers such as nylon 6.66 and nylon 6.12 composed of co-condensation of ω amino acids of ε-caprolactam and lauryl lactam. Nylon 6 · 10 and nylon copolymers are preferably used in that the sheath portion 4 can be dissolved by an acid solution and the tip portion 2 can be easily formed.

  Further, examples of the thermoplastic elastomer used at the tip portion 2 of the brush hair material 1 for scalp massage according to the present invention include nylon elastomer, polyester elastomer, styrene elastomer, urethane elastomer, olefin elastomer, and the like. Nylon elastomer and polyester elastomer are preferred because they can be easily formed.

  Furthermore, the nylon elastomer used in the present invention is obtained by polycondensation of polyamide oligomers such as nylon 6, nylon 6,6, nylon 11 and nylon 12 as hard segments and hydroxy polyether oligomers as soft segments. And polyether amides. Then, by changing the molecular weight of each segment during the condensation polymerization, those having different crystal states and fine structures can be obtained. As commercially available products of these nylon elastomers, for example, “PEBAX” manufactured by ARUKEMA can be easily obtained, and can be preferably used for obtaining the brush hair material for scalp massage of the present invention.

  On the other hand, as the polyester elastomer, a polyester hard segment composed of a dicarboxylic acid component typified by terephthalic acid and a diol component typified by ethylene glycol, 1,4-butanediol, etc., and an aliphatic polymer having a molecular weight of 600 to 3000 are used. Examples thereof include a polyester ether block copolymer formed from ether soft segments, but are not particularly limited thereto. For example, “Hytrel” manufactured by Toray DuPont Co., Ltd. can be easily obtained and can be preferably used for obtaining the brush hair material for scalp massage of the present invention.

  The thermoplastic elastomer resin preferably has a durometer type D hardness measured by a plastic durometer hardness test method of JIS-K-7215 in the range of HDD40 to HDD80.

  This is because when the hardness is lower than the above range, the flexibility necessary for the distal end portion 2 is reduced, and not only the massage effect given to the scalp is insufficient, but also the hair is entangled and preferably damaged, missing, etc. No tendency is invited. On the other hand, when the above range is exceeded, the tip 2 becomes strong and lacks flexibility, not only the massage effect applied to the scalp is insufficient, but also tends to damage and hurt the scalp.

  As long as the object of the present invention is not impaired, the above-mentioned nylon resin, polyester resin and thermoplastic elastomer include heat-resistant agent, antistatic agent, ultraviolet absorber, plasticizer, antioxidant, antibacterial agent, fluorescent whitening. Various additives such as agents, dyes and pigments can be optionally contained, and together with these additives, abrasives or polishing agents, specifically, clay, silica, calcium carbonate or apatite and mixtures thereof are also contained. It can be shown.

  The scalp massaging brush hair material 1 of the present invention is provided in the shape of a cut bristle obtained by cutting a core-sheath composite monofilament into a desired length, for example, 30-60 mm, and as described above, at least one end of the core 5 is exposed without being covered with the sheath part 4 and it is important that the tip part 2 having a diameter smaller than that of the main body part 3 of the bristle is formed. The length of the tip part 2 is 0.5 to A range of 5 mm, particularly 1 to 3.5 mm is preferred.

  This is because when the length of the tip 2 is less than the above range, the massage effect applied to the scalp is not only reduced, but the scalp tends to be damaged and hurt. This is because the effect is reduced, and the hair is entangled with the exposed distal end portion 2, thereby causing a tendency to cause damage, disconnection, and the like.

Moreover, the cross-sectional area ratio of the sheath part 4 and the core part 5 of the brush hair material for scalp massage of the present invention is 10 to 50% for the sheath part 4 whereas 90 to 50% for the core part 5 in particular. It is preferable that the core part 5 is in the range of 80 to 65% with respect to the sheath part 4 of 20 to 35%,
When the ratio of the core part 5 exceeds the above range, the scalp massage brush hair material 1 becomes soft and tends to deteriorate the cleaning effect, and the durability tends to be inferior. In addition, the frictional resistance with the scalp tends to decrease and the cleaning effect tends to decrease, and the scalp massage effect tends to be difficult to obtain.

  Furthermore, the diameter of the hair material 1 for scalp massage brushes of the present invention can be designed to be thick because the hair material itself tends to soften when a thermoplastic elastomer resin is used for the core 5. Specifically, a range of 0.3 mm to 5.0 mm, particularly 0.45 mm to 3.0 mm is preferable.

  Furthermore, the shape of the core portion 6 of the hair material 1 for scalp massage brushes of the present invention is not particularly limited. For example, the shape is a circle or a polygon such as a rectangle or a hexagon, and further, a four-leaf or six-leaf. Shapes, multi-leaf shapes such as eight leaf shapes, etc., but the scalp massage brush hair material 1 is required to have a cleaning effect and scalp massage effect to wash off sebum deposited on the scalp and pores efficiently. A circular cross-sectional shape is particularly preferable because of its excellent balance.

  In addition, as a formation method of the front-end | tip part 2, the method by the chemical treatment which selectively melt | dissolves resin which comprises the sheath part 4 etc. are mentioned, It can select suitably according to the combination etc. of a composite material.

  Next, the manufacturing method of the hair material 1 for scalp massage brushes of this invention is demonstrated.

  First, the core-sheath composite monofilament used in the hair material 1 for scalp massage brushes of the present invention includes, for example, a nylon resin and / or a polyester resin as a constituent material of the sheath portion 4 and a thermoplastic elastomer resin as a constituent material of the core portion 5. If necessary, various additives are mixed with these synthetic resins as required, and then the various synthetic resins are fed to a known composite melt spinning machine and melt-kneaded, from the nozzle for the core-sheath composite yarn. Co-extrusion of a synthetic resin melt. Thereafter, the co-extruded synthetic resin melt is cooled and solidified, and wound up through a stretching process and a heat setting process.

  The cut bristle is obtained by cutting the thus obtained core-sheath composite monofilament into a desired length, and then the core 5 is exposed from the sheath 4 at at least one end of the cut bristle to form the tip 2. To do.

  As a method for forming the tip portion 2, there is a method in which the sheath portion 4 is scraped off by mechanical polishing. Therefore, in the brush hair material 1 for scalp massage of the present invention, a method of chemically dissolving and removing the sheath portion 4 using a solution or the like is preferable. For example, when a polyester resin is used for the sheath portion 4, an alkali is used. When a solution is used and a nylon resin is used for the sheath portion 4, the tip portion 2 having a well-formed shape can be easily formed by using an acid solution.

  Moreover, the scalp massage brush of the present invention uses the scalp massage brush hair material 1 as at least a part of the hair material. In addition, there is no limitation in particular about the manufacturing method of the brush for scalp massage of this invention, It can manufacture by a well-known method.

  As described above, the scalp massage brush hair material 1 according to the present invention has moderate scalp massage effect and moderate scalp massage effect that has moderate flexibility and frictional resistance at the hair tip, and is deposited on the scalp and pores. It combines an excellent cleaning effect to wash off sebum efficiently. And the scalp massage brush which used the hair material 1 for scalp massage brushes of this invention for at least one part exhibits these characteristics sufficiently, and is very practical.

  Hereinafter, although the scalp massage brush hair material and scalp massage brush of the present invention will be described based on examples, the present invention is not limited to the following examples as long as the gist thereof is not exceeded.

  In addition, the scalp massage brush for evaluation is obtained by implanting the hair material for scalp massage brush obtained in Examples etc. into the handle of the brush so that the hair length is 20 mm, and was evaluated as follows. .

[Cleanability evaluation]
A stainless steel plate using the scalp massage brush described above, and applying a load of 650 g perpendicularly from the back side of the sliding surface to the scalp massage brush and forming innumerable recesses with a diameter of 0.5 mm to which virtual stains were applied On the other hand, it was slid 500 times at an amplitude of 20 mm and a speed of 100 rpm, and the removal rate of virtual dirt was measured. The stain removal rate was calculated for the surface of the stainless steel plate recess.

[Massage evaluation]
The scalp massage brush was used by 20 adults for 5 days, and each responded to a massage feeling. Each evaluation standard is as follows.
◎ ・ ・ Very good,
○ ・ ・ Good
△ ・ ・ Normal
× ·· Bad.

[Example 1]
Composite melt spinning using polybutylene terephthalate (Toraycon 1100S manufactured by Toray Industries, Inc., hereinafter referred to as PBT) as a constituent material of the sheath and polyamide elastomer (PEBAX 6333 manufactured by ARUKEMA) as a constituent material of the core. The resin composition supplied to the machine and melted by heating was extruded from a nozzle having a circular cross section and immediately cooled in water at 30 ° C. Then, after stretching by a total of 4.1 times under hot water of 55 ° C. and dry heat of 100 ° C., relaxation heat treatment is performed in a dry heat atmosphere, and the cross-sectional area ratio of the core portion and the sheath portion is 1.0 mm. 75% and 25% core-sheath composite monofilaments were wound into a bundle.

  Next, a paper tape was wound around the wound bundle of core-sheath composite monofilaments, and further cut into a length of 27 mm to obtain a cut bristle.

  And this cut bristle was immersed in the sodium hydroxide solution, the sheath part of the front-end | tip was melt | dissolved and removed, and the hair material for scalp massage brushes which has a 2-mm front-end | tip part was obtained.

  A scalp massage brush was produced using the hair material for scalp massage brush obtained, and the brush characteristics were evaluated. The results are shown in Table 1.

[Example 2]
In Example 1, the sheath part was changed from PBT to nylon 6 · 10 (Amilan CM2001 manufactured by Toray Industries, Inc., hereinafter referred to as N6 · 10), and the core part was changed from a polyamide elastomer to a polyester elastomer (Hytrel 6347 manufactured by Toray DuPont). ), The core-sheath composite monofilament was spun, and the sodium hydroxide solution was diluted with sulfuric acid solution (when sulfuric acid solution was 100% by weight, sulfuric acid 98% concentration product: 55% by weight, water: 45% by weight) The hair material for scalp massage brushes was prepared in the same manner except that the sheath at the tip was dissolved and removed.

  A scalp massage brush was produced using the hair material for scalp massage brush obtained, and the brush characteristics were evaluated. The results are shown in Table 1.

Example 3
In Example 1, the hair for scalp massage brushes was made in the same manner except that the cross-sectional area ratio of the core part and the sheath part was changed to 85% and 15%, respectively, and the length of the tip part was changed from 2 mm to 1 mm. A material was prepared.

  A scalp massage brush was produced using the hair material for scalp massage brush obtained, and the brush characteristics were evaluated. The results are shown in Table 1.

Example 4
In Example 2, the hair for scalp massage brushes was made in the same manner except that the cross-sectional area ratio of the core part and the sheath part was changed to 60% and 40%, respectively, and the length of the tip part was changed from 2 mm to 4 mm. A material was prepared.

  A scalp massage brush was produced using the hair material for scalp massage brush obtained, and the brush characteristics were evaluated. The results are shown in Table 1.

[Comparative Example 1]
In Example 1, the hair material for scalp massage brush was prepared in the same manner except that the length of the tip protruding from the end was changed to 0 mm, that is, the formation of the tip was omitted.

  Table 1 shows the results of producing a scalp massage brush using the obtained scalp massage brush hair material and evaluating the characteristics.

[Comparative Example 2]
In Example 1, a hair material for a scalp massage brush was produced in the same manner except that the monofilament was formed of a polyester elastomer alone and the formation of the tip was omitted.

  Table 1 shows the results of producing a scalp massage brush using the obtained scalp massage brush hair material and evaluating the characteristics.

[Comparative Example 3]
Similar to Comparative Example 2, a hair material for scalp massage brush was prepared in the same manner except that the monofilament was formed of PBT alone and the formation of the tip was omitted.

  Table 1 shows the results of producing a scalp massage brush using the obtained scalp massage brush hair material and evaluating the characteristics.

[Comparative Example 4]
In Comparative Example 3, a hair material for a scalp massage brush was prepared in the same manner except that a tapered portion was formed at the hair material tip.

  Table 1 shows the results of producing a scalp massage brush using the obtained scalp massage brush hair material and evaluating the characteristics.

  As is clear from the results in Table 1, the scalp massage brushes (Examples 1 to 4) using the scalp massage brush hair material of the present invention have sebum deposited on the scalp and pores, particularly by the exposed tip. It can be seen that it is effectively removed and that it has a high practicality because it can provide a gentle and effective massage effect on the scalp with moderate flexibility.

  On the other hand, it is understood that a scalp massage brush using a scalp massage brush hair material that does not satisfy the conditions of the present invention lacks a massage effect and a cleanability.

  The scalp massage brush hair material and the massage brush according to the present invention have superior flexibility and frictional resistance at the hair tip as compared with the conventional scalp massage brush hair material, and do not damage the scalp. It has a great effect on the barber and beauty industry because it has both a massage effect and an excellent cleaning effect that efficiently removes sebum deposited on the scalp and pores.

It is the perspective view which showed an example of the brush hair material for scalp massage of this invention. It is the sectional view on the AA line of FIG.

Explanation of symbols

1 Brush hair material for scalp massage 2 Tip part 3 Body part 4 Sheath part 5 Core part

Claims (7)

A cut bristle composed of a core-sheath composite monofilament, wherein the core part is exposed at least at one end without being covered with the sheath part, and a tip part having a diameter smaller than that of the main part of the bristle is formed. Brush hair material for scalp massage. The scalp massage brush hair material according to claim 1, wherein the sheath of the core-sheath composite monofilament is made of a polyester resin and / or a nylon resin, and the core is made of a thermoplastic elastomer resin. The brush hair material for scalp massage according to claim 1 or 2, wherein the length of the tip is within a range of 0.5 mm to 5 mm. The core part of the core-sheath composite monofilament is made of a thermoplastic elastomer resin of HDD40 to HDD80 having a durometer type D hardness measured by a plastic durometer hardness test method of JIS-K-7215. Brush hair material for scalp massage according to -3. The scalp massage brush hair material according to claim 1, wherein the sheath of the core-sheath composite monofilament is made of a polyester resin, and the core is made of a nylon elastomer. The scalp massage brush hair material according to claim 1, wherein the sheath of the core-sheath composite monofilament is made of nylon resin and the core is made of polyester elastomer. A scalp massage brush, wherein the scalp massage brush hair material according to any one of claims 1 to 6 is used at least in part.

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