JP2012217730A - Core-in-sheath conductive fiber for cosmetic brush - Google Patents
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Abstract
Description
本発明は、フェースブラシ、チークブラシ等の化粧ブラシに用いられる芯鞘型導電性繊維に関する。 The present invention relates to a core-sheath type conductive fiber used for a cosmetic brush such as a face brush or a cheek brush.
従来、化粧ブラシ用の毛材には、獣毛が使用されてきた。獣毛は肌当たりがよく、また、キューティクルを有するため、パウダーの獣毛への付き性が良く、更に、そのパウダーを肌に転着させる際の、パウダーの獣毛からの離れ性が良好である。 Conventionally, animal hair has been used as a hair material for makeup brushes. Animal hair has good skin contact and has a cuticle, so the powder has good adhesion to animal hair, and when the powder is transferred to the skin, the powder has good separation from the animal hair. is there.
しかしながら、獣毛は、生産性が低く、品質安定性に乏しいことから、近年、ポリアミド系繊維、ポリエステル系繊維、更には、アクリル系繊維等の合繊繊維が多く用いられるようになった。
中でも、獣毛が持つ滑らかな触感を得るために、ポリブチレンテレフタレートからなる合成繊維が好適に用いられている（特許文献１等参照）。
However, since animal hair has low productivity and poor quality stability, in recent years, synthetic fibers such as polyamide fibers, polyester fibers, and acrylic fibers have been frequently used.
Among these, synthetic fibers made of polybutylene terephthalate are preferably used in order to obtain the smooth feel of animal hair (see Patent Document 1).
また、一般的にブラシとしては、繊維先端部が尖鋭形状を有する、クリーニング性能や除電性能に優れたブラシ用導電性繊維が提案されている（特許文献２等参照）。また、帯電ブラシなどに用いた場合に、トナーの付着量が少なく、また抵抗値変化の小さい、ポリアミド系導電性繊維が提案されている（特許文献３等参照）。 In general, as a brush, a conductive fiber for a brush having a sharp tip at the tip of the fiber and excellent in cleaning performance and charge removal performance has been proposed (see Patent Document 2, etc.). In addition, a polyamide-based conductive fiber that has a small toner adhesion amount and a small resistance value change when used in a charging brush or the like has been proposed (see Patent Document 3).
しかしながら、ポリアミド系繊維やポリエステル系繊維等の合成繊維を用いた化粧ブラシは静電気によってパウダーの離れ性が悪い。
また、上記特許文献１においては、導電性繊維を用いてもよいとの記載があるが、その具体的な構成については何ら開示されていない。
更に、上記特許文献２及び３においては、化粧ブラシ用導電性繊維については記載されていない。
However, cosmetic brushes using synthetic fibers such as polyamide fibers and polyester fibers have poor powder releasability due to static electricity.
Moreover, in the said patent document 1, although there exists description that an electroconductive fiber may be used, it is not disclosed at all about the specific structure.
Further, Patent Documents 2 and 3 do not describe conductive fibers for cosmetic brushes.
本発明の目的は、獣毛のような滑らかな触感を有し、パウダーの離れ性が良好な化粧ブラシ用導電性繊維を提供することにある。 An object of the present invention is to provide a conductive fiber for a cosmetic brush that has a smooth tactile feel like animal hair and has good powder releasability.
本発明の目的は、鞘成分がポリブチレンテレフタレート系樹脂であり、芯成分がカーボンブラックを３０〜４０質量％含有するポリアミド系樹脂である、化粧ブラシ用芯鞘型導電性繊維によって達成される。
また、化粧ブラシ用芯鞘型導電性繊維の単糸繊度は５０〜１２０デシテックスであることが好ましい。
The object of the present invention is achieved by a core-sheath type conductive fiber for a cosmetic brush, wherein the sheath component is a polybutylene terephthalate resin and the core component is a polyamide resin containing 30 to 40% by mass of carbon black.
Moreover, it is preferable that the single yarn fineness of the core-sheath type conductive fiber for makeup brushes is 50-120 dtex.
本発明の芯鞘型導電性繊維は、フェースパウダーやチークパウダー等のパウダー類を顔等の被塗布部に塗布するときに使用する化粧ブラシの毛材として用いると、パウダー類の毛材からの離れ性が良い。 When the core-sheath type conductive fiber of the present invention is used as a hair material of a makeup brush used when applying powders such as face powder and teak powder to an applied part such as a face, Good separation.
また、本発明の芯鞘型導電性繊維は、芯成分にカーボンブラックを含有させたポリアミド系樹脂を用いることでブリッスル加工時のカーボンブラックの脱落が無い。 Moreover, the core-sheath type conductive fiber of this invention does not drop | omit carbon black at the time of a bristle process by using the polyamide-type resin which made the core component contain carbon black.
以下、本発明を詳細に説明する Hereinafter, the present invention will be described in detail.
本発明の芯鞘型導電性繊維は、鞘成分がポリブチレンテレフタレート系樹脂であり、芯成分がカーボンブラックを３０〜４０質量％含有するポリアミド系樹脂である。
本発明の芯鞘型導電性繊維は、化粧ブラシにする際、通常ブリッスル加工を施すことから、同心タイプの芯鞘型とすることが好ましい。また、芯成分が完全に鞘成分に覆われた芯鞘型が好ましい。
In the core-sheath type conductive fiber of the present invention, the sheath component is a polybutylene terephthalate-based resin, and the core component is a polyamide-based resin containing 30 to 40% by mass of carbon black.
The core-sheath type conductive fiber of the present invention is preferably a concentric core-sheath type because it normally undergoes bristle processing when making a cosmetic brush. A core-sheath type in which the core component is completely covered with the sheath component is preferable.
本発明におけるポリブチレンテレフタレート系樹脂は、テレフタル酸と１，４−ブチレングリコールを重縮合して得られる熱可塑性ポリエステルである。
また、本発明におけるポリブチレンテレフタレート系樹脂は、テレフタル酸及び１，４−ブチレングリコールの一部を他のジカルボン酸成分や他のグリコール成分で置き換えた共重合ポリエステルであっても良い。
The polybutylene terephthalate resin in the present invention is a thermoplastic polyester obtained by polycondensation of terephthalic acid and 1,4-butylene glycol.
Further, the polybutylene terephthalate resin in the present invention may be a copolyester obtained by replacing a part of terephthalic acid and 1,4-butylene glycol with another dicarboxylic acid component or another glycol component.
化粧ブラシを製造する際、通常、芯鞘型導電性繊維に対して、アルカリ溶液でブリッスル加工を行うため、芯成分に用いる樹脂はポリアミド系樹脂を用いる。 When manufacturing a cosmetic brush, since a bristle process is normally performed with respect to a core-sheath type conductive fiber with an alkaline solution, a polyamide-based resin is used as a resin for the core component.
ポリアミド系樹脂としては、アミド結合を有する重合体であればよく、６−ナイロン、６，６−ナイロン、６，１０−ナイロン、６，１２−ナイロン、１１−ナイロン、１２−ナイロン、これらの共重合体等が挙げられ、中でも、安価で、ポリブチレンテレフタレートと複合する際に、融点が近いので樹脂の酸化劣化のリスクがなく、また、複合紡糸後のポリブチレンテレフタレートとの剥離がなく、カーボンブラックの脱落がない６−ナイロンが好ましい。 As the polyamide-based resin, any polymer having an amide bond may be used, and 6-nylon, 6,6-nylon, 6,10-nylon, 6,12-nylon, 11-nylon, 12-nylon, both of them. Polymers, etc., among others, inexpensive, when compounded with polybutylene terephthalate, the melting point is close, so there is no risk of oxidative degradation of the resin, and there is no peeling from polybutylene terephthalate after composite spinning, carbon 6-nylon, which does not lose black, is preferred.
カーボンブラックの含有量はポリアミド系樹脂中、３０〜４０質量％とすることが好ましい。含有量が少ないと体積固有抵抗値が高くなりパウダーの離れ性が悪くなる傾向にあり、含有量が多いと体積固有抵抗値が低くなりパウダーの付きが悪くなる傾向にある。 The content of carbon black is preferably 30 to 40% by mass in the polyamide resin. When the content is low, the volume resistivity value tends to be high and the powder releasability tends to be poor, and when the content is large, the volume resistivity value is low and the powder tends to be stuck.
カーボンブラックとしては、アセチレンブラック、ケッチェンブラック、チャンネルブラック、ファーネスブラック等が挙げられる。この中で、ファーネスブラックが、大量生産に向き、粒子径やストラクチャーをコントロールしやすい点で好ましく、良好な分散性を維持することができ、導電性繊維にした場合、体積固有抵抗値のバラツキが少ない。 Examples of carbon black include acetylene black, ketjen black, channel black, and furnace black. Of these, furnace black is preferable in terms of mass production and is easy to control the particle size and structure, and can maintain good dispersibility. When conductive fibers are used, there is a variation in volume resistivity. Few.
芯鞘型導電性繊維の体積固有抵抗値は、１０４〜１０８Ω・ｃｍが好ましく、この範囲にあることによりパウダーの付き性を抑える事無く導電性能を発揮できる。 The volume specific resistance value of the core-sheath type conductive fiber is preferably 10 4 to 10 8 Ω · cm. By being in this range, the conductive performance can be exhibited without suppressing the powder adhesion.
本発明の芯鞘型導電性繊維は、鞘成分としてポリブチレンテレフタレート系樹脂を１００重量部、芯成分としてカーボンブラックを含有したポリアミド系樹脂を３〜１０重量部とすることが好適である。 The core-sheath type conductive fiber of the present invention is preferably 100 parts by weight of a polybutylene terephthalate resin as a sheath component and 3 to 10 parts by weight of a polyamide resin containing carbon black as a core component.
また、芯鞘型導電性繊維の単糸繊度は、５０〜１２０デシテックスとすることが好ましい。単糸繊度がこの範囲であれば、獣毛に近い肌触りを持つことができる。 Moreover, it is preferable that the single yarn fineness of a core-sheath-type conductive fiber shall be 50-120 dtex. If the single yarn fineness is within this range, it can have a touch close to animal hair.
芯鞘型導電性繊維には、所望により、酸化防止剤、紫外線吸収剤、紫外線安定剤、分散剤等の各種添加剤を、本発明の効果を損なわない範囲で配合してもよい。 If desired, the core-sheath type conductive fiber may be blended with various additives such as an antioxidant, an ultraviolet absorber, an ultraviolet stabilizer, and a dispersant as long as the effects of the present invention are not impaired.
本発明の芯鞘型導電性繊維は、例えば、上記各成分を用い、常法により、溶融紡糸した後、得られたフィラメントを延伸することにより得られる。延伸倍率は、２〜３倍とすることが好ましい。
延伸無しでは、ブリッスル加工時、強度劣化が著しく毛倒れする傾向にあり、３倍より高い倍率で延伸すると肌当りが硬くなる傾向にある。
The core-sheath type conductive fiber of this invention is obtained by extending | stretching the obtained filament, for example after melt-spinning by a conventional method using said each component. The draw ratio is preferably 2 to 3 times.
Without stretching, strength deterioration tends to fall down significantly during bristle processing, and when stretching at a magnification higher than 3 times, the skin contact tends to harden.
本発明の化粧ブラシ用芯鞘型導電性繊維を用いた毛材は、前記の導電性繊維を集束して一定長に切断し、得られた繊維収束体の一方端側をアルカリ溶液中に浸漬することが好適である。例えば、アルカリ溶液としてはＮａＯＨ水溶液（濃度３５質量％）を使用し、液温が１１０℃前後の溶液中に繊維収束体を６０〜８０分間浸漬することにより、毛材の先端をテーパー状に形成する。 The bristle material using the core-sheath type conductive fiber for the makeup brush of the present invention is a method of converging the conductive fiber and cutting it into a predetermined length, and immersing one end side of the obtained fiber converging body in an alkaline solution. It is preferable to do. For example, an aqueous NaOH solution (concentration 35 mass%) is used as the alkaline solution, and the tip of the hair material is tapered by immersing the fiber converging body in a solution having a liquid temperature of around 110 ° C. for 60 to 80 minutes. To do.
アルカリ溶液中に浸漬すると、鞘成分のポリブチレンテレフタレート系樹脂が溶液中に溶解して減量され、各繊維の浸漬された部分がテーパー状に形成され、先端にアルカリで溶解されない芯成分が露出する。
このように、毛材の先端部をブリッスル加工によりテーパー状に形成することで、その肌当たりが柔らかくなると共に、パウダーの付き性や離れ性が更に良好となる。
ブリッスル加工は、毛材の状態で行ってもよく、ブラシとしてから行ってもよい。
When immersed in an alkaline solution, the polybutylene terephthalate resin of the sheath component is dissolved and reduced in the solution, and the immersed portion of each fiber is formed in a tapered shape, and the core component that is not dissolved by alkali is exposed at the tip. .
Thus, by forming the front-end | tip part of a hair material in a taper shape by bristle processing, while the skin contact is softened, the sticking property and releasability of powder become still better.
The bristle processing may be performed in the state of a hair material, or may be performed as a brush.
本発明の芯鞘型導電性繊維は、ポリブチレンテレフタレートのみからなる合成繊維等に４〜１０質量％含有させて化粧ブラシとすることが好適である。 It is preferable that the core-sheath type conductive fiber of the present invention is contained in 4 to 10% by mass in a synthetic fiber or the like made only of polybutylene terephthalate to make a cosmetic brush.
以下、実施例を挙げて、本発明を具体的に説明する。
［実施例１]
（芯鞘型導電性繊維の製造）
鞘成分として、ポリブチレンテレフタレート（三菱化学社製、η＝０．８５１）を用い、芯成分として、６−ナイロンブライト（集盛実業社製、η＝２．５８）にカーボンブラックを３５質量％混練したチップを用い、エクストゥルーダー型溶融押出機に供給し、鞘成分：芯成分が重量比で２０：１となるように、紡糸温度２６５℃で溶融紡糸し、６００ｍ／分で巻き取った。次いで、８０℃で２．５倍に延伸し、単糸繊度５５ｄｔ、体積固有抵抗値１×１０6Ωの同心タイプの芯鞘型導電性繊維を得た。
なお、実施例において、体積固有抵抗値は、試料を幅２ｃｍ×長さ１２ｃｍの形状に切断し、両端１ｃｍの部分にそれぞれ導電性ペースト（ドータイト：藤倉化成社製）を塗り乾燥させ、その後、導電性繊維の両端部の導電性ペーストを塗った部分を測定器に接続して抵抗値を測定した。得られた抵抗値に導電性繊維の断面積を掛けて体積固有抵抗値とした。測定環境は温度２３℃、湿度６５％ＲＨの温湿度下で行った。
Hereinafter, the present invention will be specifically described with reference to examples.
[Example 1]
(Manufacture of core-sheath type conductive fibers)
Polybutylene terephthalate (Mitsubishi Chemical Co., η = 0.551) is used as the sheath component, and carbon black is 35% by mass as the core component to 6-nylon bright (manufactured by Shumori Jitsugyo Co., η = 2.58) Using the kneaded chips, they were supplied to an extruder type melt extruder, melt-spun at a spinning temperature of 265 ° C. so that the sheath component: core component was 20: 1 by weight, and wound at 600 m / min. . Subsequently, it was stretched 2.5 times at 80 ° C. to obtain a concentric core-sheath type conductive fiber having a single yarn fineness of 55 dt and a volume resistivity of 1 × 10 6 Ω.
In the examples, the volume resistivity value is obtained by cutting the sample into a shape having a width of 2 cm and a length of 12 cm, applying a conductive paste (Dotite: manufactured by Fujikura Kasei Co., Ltd.) to each of both ends of 1 cm, and then drying. The resistance value was measured by connecting the portions coated with the conductive paste at both ends of the conductive fiber to a measuring instrument. The obtained resistance value was multiplied by the cross-sectional area of the conductive fiber to obtain a volume specific resistance value. The measurement environment was a temperature and humidity of 23 ° C. and a humidity of 65% RH.
（化粧ブラシの製造）
上記の方法で製造した芯鞘型導電性繊維を、ポリブチレンテレフタレート樹脂のみからなる合成繊維の中に７質量％混入後、集束して５０ｍｍに切断し、得られた繊維収束体を結束して毛材とした。得られた毛材の一端を柄に取り付け、化粧ブラシとした。アルカリ溶液としてＮａＯＨ水溶液（濃度35％）を使用し、液温が１１０℃の溶液中に繊維収束体を６０分間浸漬し毛材の先端をテーパー状に形成した。
(Manufacture of makeup brushes)
The core-sheath type conductive fiber manufactured by the above method is mixed with 7% by mass in a synthetic fiber made of only polybutylene terephthalate resin, then converged and cut to 50 mm, and the obtained fiber converging body is bound. It was a hair material. One end of the obtained bristle material was attached to the handle to obtain a makeup brush. An aqueous NaOH solution (concentration 35%) was used as the alkaline solution, and the fiber converging body was immersed in a solution having a liquid temperature of 110 ° C. for 60 minutes to form a tip of the hair material in a tapered shape.
（評価）
ポリブチレンテレフタレート１００％の繊維のみからなる化粧ブラシを比較例１とし、獣毛使用の化粧ブラシを比較例２として、実施例１の化粧ブラシと共に、導電性評価及び化粧ブラシ性能の評価を実施した。
(Evaluation)
The cosmetic brush consisting only of 100% polybutylene terephthalate fiber was used as Comparative Example 1, the cosmetic brush using animal hair was used as Comparative Example 2, and together with the cosmetic brush of Example 1, evaluation of conductivity and evaluation of the cosmetic brush performance were carried out. .
＜導電性評価＞
各ブラシを用いて、ＪＩＳ Ｌ−１０９４-１９９７摩擦帯電減衰測定法で帯電圧測定し導電性評価とした。表１に結果を示す。
測定条件
摩擦布：ウール
摩擦方向：ヨコ
温湿度：２０℃、３３％ＲＨ
<Electrical conductivity evaluation>
Using each brush, the charged voltage was measured by the JIS L-1094-1997 triboelectric charge decay measurement method to evaluate the conductivity. Table 1 shows the results.
Measurement conditions Friction cloth: Wool Friction direction: Horizontal Temperature and humidity: 20 ° C, 33% RH
＜化粧ブラシ評価＞
離れ性能の評価として、各ブラシをウールで静電後、フェースパウダーを付着させて、その付着量を測定した。次いで、５回振動させた後のフェースパウダー残量を測定し、残量割合を算出した。表２に結果を示す。
<Evaluation of makeup brush>
As an evaluation of separation performance, each brush was electrostatically covered with wool, then face powder was adhered, and the amount of adhesion was measured. Next, the remaining amount of the face powder after being vibrated five times was measured, and the remaining amount ratio was calculated. Table 2 shows the results.
表１と表２に示したように、実施例１の芯鞘型導電繊維を用いることで導電性能が良く、また、フェースパウダーの離れ性が良好であった。 As shown in Tables 1 and 2, by using the core-sheath type conductive fiber of Example 1, the conductive performance was good, and the removability of the face powder was good.
Claims (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160074343A (en) * | 2014-12-18 | 2016-06-28 | 주식회사 효성 | Nylon dope dyed yarn for cosmetics and process for preparing the same |
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| JP2010233613A (en) * | 2009-03-30 | 2010-10-21 | Toray Monofilament Co Ltd | Fur material for brush and brush |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160074343A (en) * | 2014-12-18 | 2016-06-28 | 주식회사 효성 | Nylon dope dyed yarn for cosmetics and process for preparing the same |
| KR102123468B1 (en) * | 2014-12-18 | 2020-06-16 | 효성첨단소재 주식회사 | Nylon dope dyed yarn for cosmetics and process for preparing the same |
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| JP5852319B2 (en) | 2016-02-03 |
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