JP5127443B2 - Artificial hair and wig using the same - Google Patents
Artificial hair and wig using the same Download PDFInfo
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- JP5127443B2 JP5127443B2 JP2007503609A JP2007503609A JP5127443B2 JP 5127443 B2 JP5127443 B2 JP 5127443B2 JP 2007503609 A JP2007503609 A JP 2007503609A JP 2007503609 A JP2007503609 A JP 2007503609A JP 5127443 B2 JP5127443 B2 JP 5127443B2
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
- A41G3/00—Wigs
- A41G3/0083—Filaments for making wigs
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
- A41G3/00—Wigs
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
- A41G5/00—Hair pieces, inserts, rolls, pads, or the like; Toupées
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Multicomponent Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Polyamides (AREA)
- Artificial Filaments (AREA)
Description
本発明は、天然毛髪に近似する物性と風合いを有する人工毛髪とこの毛髪を用いたかつらに関する。 The present invention relates to artificial hair having physical properties and texture similar to natural hair, and a wig using this hair.
かつらは、天然毛髪を素材として古くから製造され愛用されてきたものであるが、近年天然毛髪素材の調達上の制約、その他の問題から合成繊維をかつら用毛髪素材として製造されることが多くなった。その場合、使用される合成繊維は、基本的に、感覚上も物性上も、天然毛髪に近いことを第一目標として選択される。 Wigs have been manufactured and used for a long time using natural hair as a raw material, but recently synthetic fibers are often manufactured as hair materials for wigs due to restrictions on procurement of natural hair materials and other problems. It was. In that case, the synthetic fiber used is basically selected with the primary goal of being close to natural hair, both in terms of sensation and physical properties.
使用される人工毛髪素材としては、アクリル系、ポリエステル系、ポリアミド系などの合成繊維が多いが、一般にアクリル系繊維は融点が低く、耐熱性が悪いために、パーマセット後の型保持性が悪く、例えば温水に曝すとカールなどの加工が崩れるなどの弱点がある。ポリエステル系繊維は、強度、耐熱性に優れた素材であるが、天然毛髪に比べて吸湿性が極めて低いことに加えて曲げ剛性値が高すぎるため、例えば高湿の環境下において天然毛髪と異なる外観、触感、物性を示して、かつらとして用いる場合に著しい違和感を呈する。 As artificial hair materials used, there are many synthetic fibers such as acrylic, polyester and polyamide. Generally, acrylic fibers have a low melting point and poor heat resistance, so the mold retainability after permanent set is poor. For example, when exposed to warm water, there are weak points such as curling and other processing. Polyester fiber is a material excellent in strength and heat resistance, but it has extremely low hygroscopicity compared to natural hair and has a too high flexural rigidity value. For example, it is different from natural hair in a high humidity environment. Appearance, tactile sensation, and physical properties are exhibited, and when used as a wig, a remarkable discomfort is exhibited.
ここで、曲げ剛性値とは、繊維の触感や質感などの風合いに関連する物性値で、川端式測定法により数値化できるものとして繊維織物産業で広く認知されつつある物性値である(非特許文献1参照)。一本の繊維や毛髪の曲げ剛性値を測定できる装置も開発されている(非特許文献2参照)。この曲げ剛性値は曲げ剛さとも呼ばれ、人工毛髪に単位の大きさの曲げモーメントを加えたとき、それによって生じた曲率変化の逆数で定義される。人工毛髪の曲げ剛性値が大きいほど、曲げに強くたわみずらい、つまり、硬く曲げにくい人工毛髪である。逆にこの曲げ剛性値が小さい程、曲げ易く、柔らかい人工毛髪であるといえる。 Here, the bending stiffness value is a physical property value related to the texture such as the feel and texture of the fiber, and is a physical property value that is widely recognized in the textile and textile industry as being quantifiable by the Kawabata measurement method (non-patented). Reference 1). An apparatus capable of measuring the bending stiffness value of a single fiber or hair has also been developed (see Non-Patent Document 2). This bending stiffness value is also referred to as bending stiffness, and is defined by the reciprocal of the curvature change caused by applying a unit-sized bending moment to artificial hair. As the bending stiffness value of the artificial hair is larger, the artificial hair is more resistant to bending and more difficult to bend, that is, it is hard and hard to bend. Conversely, it can be said that the smaller the bending stiffness value, the easier it is to bend and the softer artificial hair.
ところで、ポリアミド系繊維は多くの点で天然毛髪に近い外観、物性のものを提供できるため、従来からかつら用毛髪として実用に供され、特に表面処理によって不自然な光沢などを消す本出願人による製造方法の発明によって優れたかつらが提供されている(特許文献1参照)。 By the way, since the polyamide-based fiber can provide an appearance and physical properties close to natural hair in many respects, it has been conventionally put into practical use as hair for wigs, especially by the present applicant who erases unnatural luster etc. by surface treatment. An excellent wig is provided by the invention of the manufacturing method (see Patent Document 1).
ポリアミド繊維には、主鎖としてメチレン鎖のみがアミド結合でつながる直鎖飽和脂肪族ポリアミド、例えば、ナイロン6、ナイロン66などと、主鎖中にフェニレン単位が入る半芳香族系ポリアミド、例えば、東洋紡績(株)のナイロン6T、三菱ガス化学(株)のMXD6などがある。特許文献1には、ナイロン6繊維を素材として表面処理をした人工毛髪が開示されているが、ナイロン6繊維単独では触感や質感などの風合いなどに関連する物性としての曲げ剛性値が天然毛髪より低く、このため天然毛髪と同質の人工毛髪を製造するのは困難である。 The polyamide fiber includes a linear saturated aliphatic polyamide in which only a methylene chain is connected by an amide bond as a main chain, such as nylon 6 and nylon 66, and a semi-aromatic polyamide having a phenylene unit in the main chain, such as Toyo. Nylon 6T from Spinning Co., Ltd. and MXD6 from Mitsubishi Gas Chemical Co., Ltd. are available. Patent Document 1 discloses artificial hair that has been surface-treated using nylon 6 fiber as a raw material, but nylon 6 fiber alone has a flexural rigidity value as a physical property related to texture such as touch and texture as compared with natural hair. Therefore, it is difficult to produce artificial hair of the same quality as natural hair.
一方、ナイロン6Tを用いた人工毛髪は、逆に曲げ剛性値が天然毛髪より高く、このナイロン6Tにより天然毛髪と同質の毛髪を製造するのは困難である。そこでナイロン6とナイロン6Tとの混練紡糸によって天然毛髪に近い曲げ剛性を示す繊維を製造することが考えられるが、これら2種の樹脂は融点差が大きく、高融点のナイロン6Tに合わせた溶融温度を設定すると、低融点で耐熱性も相対的に低いナイロン6が溶融中に熱酸化劣化するという製造工程面での制約があり過ぎる。そのため上記ナイロン6Tは、毛髪素材としては実用化されていない。 On the other hand, artificial hair using nylon 6T has a higher bending stiffness value than natural hair, and it is difficult to produce hair of the same quality as natural hair using this nylon 6T. Therefore, it is conceivable to produce fibers exhibiting bending rigidity close to that of natural hair by kneading and spinning nylon 6 and nylon 6T, but these two types of resins have a large melting point difference, and the melting temperature matched to high melting point nylon 6T. Is set, there are too many restrictions in the manufacturing process that nylon 6 having a low melting point and relatively low heat resistance is thermally oxidized and deteriorated during melting. Therefore, the nylon 6T has not been put into practical use as a hair material.
2種類の樹脂の特性をそれぞれ生かす方法として、鞘/芯構造の繊維が知られている。この繊維は芯になる繊維とそれを取り巻く鞘状の繊維から1本の繊維を構成し、異なる2種類の樹脂のそれぞれの特性を生かすことで、一般繊維として、また、かつら用人工毛髪素材とするものである。たとえば、特許文献2には、塩化ビニリデン、ポリプロピレンなどからなる鞘/芯構造の繊維が開示され、特許文献3には、ポリアミド系であるが、芯部に蛋白質架橋ゲルを配合することによって変性する繊維が開示されている。 A fiber having a sheath / core structure is known as a method of utilizing the characteristics of two kinds of resins. This fiber constitutes one fiber from the core fiber and the sheath-like fiber surrounding it, and makes use of the characteristics of two different types of resins as a general fiber and an artificial hair material for wigs. To do. For example, Patent Document 2 discloses a fiber having a sheath / core structure made of vinylidene chloride, polypropylene, or the like, and Patent Document 3 is a polyamide-based fiber, but is modified by blending a protein cross-linking gel in the core. A fiber is disclosed.
さらに通常の合成繊維の持つ透明感が人工毛髪として使用された場合、不自然な光沢となることを防止するために、表面に凹凸を与えることによって不透明とし、天然毛髪に近い外観、風合いを与える試みが種々なされている。上記特許文献1では、表面に球晶を発生成長させることにより、また特許文献4では、繊維表面を化学薬品処理することによる表面への凹凸付与法が開示されている。この他には、人工毛髪の表面を砂、氷、ドライアイスなどの微粉でブラスト処理する方法も知られている。 Furthermore, when the transparency of normal synthetic fibers is used as artificial hair, it is made opaque by giving irregularities on the surface to prevent it from becoming unnatural gloss, giving the appearance and texture close to natural hair Various attempts have been made. Patent Document 1 discloses a method for imparting irregularities to the surface by generating and growing spherulites on the surface, and Patent Document 4 by treating the fiber surface with chemicals. In addition, a method of blasting the surface of artificial hair with fine powder such as sand, ice and dry ice is also known.
かつらに使用する人工毛髪は、第一義的に天然毛髪に近い風合い(外観、触感、質感)及び物性値を有することが求められ、その上でさらに天然毛髪より優れた物性値を有することが理想である。上述したように各種合成繊維素材はそれぞれの特徴と弱点を有し、その中では特定のポリアミド繊維、特に、ナイロン6及びナイロン66がその特性が優れているため実用化されているが、曲げ剛性値が天然毛髪より低いという課題がある。 Artificial hair used in wigs is primarily required to have a texture (appearance, tactile sensation, texture) and physical properties close to those of natural hair, and further to have physical properties superior to natural hair. Ideal. As mentioned above, various synthetic fiber materials have their respective characteristics and weaknesses. Among them, specific polyamide fibers, especially nylon 6 and nylon 66, have been put into practical use because of their excellent characteristics. There is a problem that the value is lower than that of natural hair.
本発明は上記課題に鑑み、天然毛髪に近い風合い(外観、触感、質感)及び物性値を有する人工毛髪及びそれを用いたかつらを提供することを目的としている。 In view of the above problems, an object of the present invention is to provide artificial hair having a texture (appearance, touch, texture) and physical properties close to those of natural hair, and a wig using the same.
本発明者らは鋭意研究を重ねた結果、ポリアミド系合成繊維の特質を生かし、芯部を曲げ剛性の高いポリアミド繊維とし、鞘部を芯部よりも曲げ剛性の低いポリアミド繊維とする、鞘/芯構造、すなわち、芯になる繊維とそれを取り巻く鞘状の繊維から成る構造、の繊維が両樹脂の特性を生かし、天然毛髪に極めて近い風合い(外観、触感、質感)と物性値を有する人工毛髪として最適であるとの知見を得て、本発明を完成するに至った。 As a result of intensive studies, the present inventors have made use of the characteristics of the polyamide-based synthetic fiber to make the core part a polyamide fiber having a higher bending rigidity and the sheath part a polyamide fiber having a lower bending rigidity than the core part. The core structure, that is, the structure consisting of the core fiber and the sheath-like fiber surrounding it, makes use of the characteristics of both resins, and has a texture (appearance, feel, texture) and physical properties that are very close to natural hair. Obtaining knowledge that it is optimal as hair, the present invention has been completed.
上記目的を達成するため、本発明の人工毛髪は、芯部と芯部を覆う鞘部とからなる鞘/芯構造を有し、芯部がポリアミド樹脂からなり、鞘部が芯部よりも曲げ剛性の低いポリアミド樹脂からなることを特徴とする。
上記構成において、好ましくは、人工毛髪の表面は、微細な凹凸部を有して艶消しがされている。微細な凹凸部は、球晶及び/又はブラスト処理からなっていてよい。好ましくは、芯部は半芳香族ポリアミド樹脂からなり、鞘部は直鎖飽和脂肪族ポリアミドからなる。半芳香族ポリアミドは、ヘキサメチレンジアミンとテレフタール酸との交互共重合体、又は、メタキシリレンジアミンとアジピン酸との交互共重合体であり、また、直鎖飽和脂肪族ポリアミドは、カプロラクタム開環重合体、及び/又は、ヘキサメチレンジアミンとアジピン酸との交互共重合体であることが好ましい。鞘部及び芯部の鞘/芯重量比は、好ましくは10/90〜35/65である。人工毛髪は、顔料及び/又は染料を含有していてもよい。In order to achieve the above object, the artificial hair of the present invention has a sheath / core structure comprising a core part and a sheath part covering the core part, the core part is made of polyamide resin, and the sheath part is bent more than the core part. It consists of a polyamide resin with low rigidity.
In the above configuration, preferably, the surface of the artificial hair has a fine uneven portion and is matt. The fine irregularities may consist of spherulites and / or blasting. Preferably, the core part is made of a semi-aromatic polyamide resin, and the sheath part is made of a linear saturated aliphatic polyamide. The semi-aromatic polyamide is an alternating copolymer of hexamethylenediamine and terephthalic acid, or an alternating copolymer of metaxylylenediamine and adipic acid, and a linear saturated aliphatic polyamide is caprolactam ring-opening. A polymer and / or an alternating copolymer of hexamethylenediamine and adipic acid is preferable. The sheath / core weight ratio of the sheath and the core is preferably 10/90 to 35/65. The artificial hair may contain a pigment and / or a dye.
本発明の人工毛髪は、芯部とこれを取り巻く鞘部の二重構造で成り、鞘部及び芯部が曲げ剛性の異なるポリアミド樹脂から形成されるので、湿度変化に対して天然毛髪の曲げ剛性値に極めて近い挙動を示す人工毛髪を提供することができる。このため、この人工毛髪はその曲げ剛性値が天然毛髪に近似しているので、特に、外観、触感、質感などの風合いが極めて天然毛髪に近い自然な人工毛髪を提供することができ、とくに温度や湿度に応じて曲げ剛性が変化し、人毛により近い挙動を示す人工毛髪が得られる。 The artificial hair of the present invention has a double structure of a core part and a sheath part surrounding the core part, and the sheath part and the core part are formed from polyamide resins having different bending rigidity. It is possible to provide artificial hair that behaves very close to the value. For this reason, since this artificial hair has a flexural rigidity value close to that of natural hair, it can provide natural artificial hair that is very close to natural hair in terms of appearance, touch, texture, etc. The bending stiffness changes according to the humidity and humidity, and artificial hair that exhibits behavior closer to that of human hair can be obtained.
本発明のかつらによれば、かつらベースとかつらベースに植設する人工毛髪とを含み、人工毛髪が、芯部と芯部を覆う鞘部とからなる鞘/芯構造を有し、芯部がポリアミド樹脂からなり、鞘部が芯部よりも曲げ剛性の低いポリアミド樹脂からなる人工毛髪を用いたことを特徴とする。
本発明のかつらに上記構成の人工毛髪を用いることにより、湿度変化に対して天然毛髪の曲げ剛性値に極めて近い挙動を示すかつらを提供することができる。このためこのかつらによれば、人工毛髪の立ち上がりがよく、その曲げ剛性値が天然毛髪に近似しているので、特に、外観、触感、質感などの風合いに極めて優れ、見栄えが自然なかつらが得られる。従って、温度や湿度に応じて曲げ剛性が変化し、人毛により近い挙動を示す人工毛髪によって、恰も頭部から自然に生育した自髪であるかの如き外観を呈し、かつら使用者はかつら装着が露見され得ない。According to the wig of the present invention, the artificial hair includes a wig base and artificial hair to be planted on the wig base, the artificial hair has a sheath / core structure including a core portion and a sheath portion covering the core portion, and the core portion is It is characterized by using artificial hair made of polyamide resin and having a sheath part made of polyamide resin whose bending rigidity is lower than that of the core part.
By using the artificial hair having the above structure in the wig of the present invention, it is possible to provide a wig that exhibits a behavior very close to the bending stiffness value of natural hair with respect to a change in humidity. For this reason, according to this wig, artificial hair has a good rise and its flexural rigidity value approximates that of natural hair, so that it is particularly excellent in appearance, touch, texture, etc., and has a natural appearance. It is done. Therefore, with the artificial hair that changes its bending stiffness according to temperature and humidity and behaves more like human hair, the eyelids appear as if they were natural hair growing naturally from the head, and wig users wear wigs. Cannot be revealed.
本発明によれば、鞘/芯構造を有し、風合い(外観、触感、質感)、諸物性、特に曲げ剛性とその湿度による変化挙動が、天然毛髪に近い人工毛髪を提供することができる。さらに、この鞘/芯構造を有する人工毛髪を用いたかつらは、従来の単一の合成繊維材料からなる人工毛髪を用いたかつらよりも、装着者とその周囲の観察者に自然な感覚を与えることができる。
とくに、人工毛髪を芯部よりも曲げ剛性の低いポリアミド樹脂を鞘部とした鞘/芯構造とすることにより、温度や湿度に応じて曲げ剛性が変化し、人毛により近い挙動を示す人工毛髪を得ることができる結果、本発明の人工毛髪によれば、カールを付けた状態であっても、水に濡らした時のカールの伸び及び自然放置下で湿気を取り除いた時のカールの戻り具合が、天然毛髪に類似の挙動を示すことができる。
従って、本発明のかつらによれば、雨で濡れたり、高湿度の環境でかつらを装着している場合には、人工毛髪の吸湿による曲げ剛性値が変化する特性、すなわち湿度の上昇に伴い曲げ剛性値が低下することによって、人工毛髪が柔らかくなって垂れ下がりボリューム感が無くなるが、吸収した水分が自然放置や乾燥により放湿されると人工毛髪は徐々に立ち上がり、再び元の状態に戻る。この結果、恰も、頭皮から自然の毛髪が生育している状態と同じ挙動のかつらが得られるので、かつらであることが露見し難い、外観上優れた見栄えを呈することができる。According to the present invention, artificial hair having a sheath / core structure and having texture (appearance, tactile sensation, texture), various physical properties, particularly bending stiffness and its changing behavior due to humidity, can be provided. Furthermore, a wig using artificial hair having this sheath / core structure gives a natural feeling to the wearer and the surrounding observers, compared to a wig using artificial hair made of a conventional single synthetic fiber material. be able to.
In particular, artificial hair has a sheath / core structure in which a polyamide resin having a lower bending stiffness than the core portion is used as the sheath portion, so that the bending stiffness changes according to temperature and humidity, and the artificial hair exhibits a behavior closer to human hair. As a result, according to the artificial hair of the present invention, even when it is in a curled state, the curl is stretched when wet and the curl is returned when moisture is removed under natural standing. Can behave like natural hair.
Therefore, according to the wig of the present invention, when the wig is wet in the rain or is worn in a high humidity environment, the bending stiffness value changes due to moisture absorption of the artificial hair, that is, the bending occurs as the humidity increases. When the stiffness value is lowered, the artificial hair becomes soft and hangs down, but there is no volume feeling. However, when the absorbed moisture is released by natural standing or drying, the artificial hair gradually rises and returns to its original state. As a result, a wig having the same behavior as that in which natural hair grows from the scalp can be obtained, so that it is difficult to reveal that the wig is a wig, and an excellent appearance can be exhibited.
1:人工毛髪
1A:鞘部
1B:芯部
1C:微細な凹凸部
10:表面に微細な凹凸部を有する人工毛髪
21:第1の溶融槽
22:第2の溶融槽
21A,22A:溶融樹脂組成
21B,22B:ギアポンプ
23:吐出部
23A:外環吐出口
23B:中心吐出口
23C:吐出口
24:温浴
25:第1延伸ロール
26:第1乾熱槽
27:第2延伸ロール
28:第2乾熱槽
29:第3延伸ロール
30:第3乾熱槽
31:オイリング装置
32:第4延伸ロール
33:ブラスト機
34:巻取機
40:人工毛髪を用いたかつら
41:かつらベース1: Artificial hair 1A: Sheath part 1B: Core part 1C: Fine uneven part 10: Artificial hair having fine uneven parts on the surface 21: First melting tank 22: Second melting tank 21A, 22A: Molten resin Composition 21B, 22B: Gear pump 23: Discharge part 23A: Outer ring discharge port 23B: Central discharge port 23C: Discharge port 24: Warm bath 25: First stretching roll 26: First dry heat tank 27: Second stretching roll 28: Second 2 Dry heat tank 29: 3rd draw roll 30: 3rd dry heat tank 31: Oiling device 32: 4th draw roll 33: Blast machine 34: Winder 40: Wig 41 using artificial hair 41: Wig base
以下、図面に基づいて本発明の実施形態を詳細に説明する。
最初に本発明の第1の実施形態に係る人工毛髪について説明する。
図1は、本発明の第1の実施形態による人工毛髪の構成を模式的に示すもので、(A)は斜視図、(B)は人工毛髪の長手方向の垂直断面図である。図示するように、本発明の人工毛髪1は、その表面が鞘部1Aで、鞘部1Aの内部に芯部1Bを有する鞘/芯構造を有している。鞘/芯構造は図示の場合、略同心円状に配設される例を示しているが、芯部1B及び鞘1Aとも略同心円状以外の異形形状、例えば、完全に同心円になっておらず鞘に対して芯が偏心している場合も含む。また、芯がほぼ真円で鞘の厚さが異なるような鞘/芯形状であってもよい。また、人工毛髪1の断面形状は、円、楕円、まゆ型などでもよい。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the artificial hair according to the first embodiment of the present invention will be described.
1A and 1B schematically show the structure of artificial hair according to a first embodiment of the present invention, in which FIG. 1A is a perspective view and FIG. 1B is a vertical sectional view in the longitudinal direction of the artificial hair. As illustrated, the artificial hair 1 of the present invention has a sheath / core structure in which the surface is a sheath portion 1A and the core portion 1B is inside the sheath portion 1A. In the illustrated case, the sheath / core structure is illustrated as being substantially concentrically arranged. However, the core portion 1B and the sheath 1A are both irregularly shaped other than substantially concentric, for example, the sheath is not completely concentric. This includes the case where the core is eccentric. Further, it may be a sheath / core shape in which the core is almost a perfect circle and the thickness of the sheath is different. The cross-sectional shape of the artificial hair 1 may be a circle, an ellipse, an eyebrows shape, or the like.
上記芯部1Bの材料となるポリアミド樹脂としては、強度と曲げ剛性が高い半芳香族のポリアミド樹脂を好適に用いることができる。このような、半芳香族ポリアミドとしては、化学式1で表わされるヘキサメチレンジアミンとテレフタール酸との交互共重合体からなる高分子(例えば、ナイロン6T)、及び/又は、化学式2で表わされるアジピン酸とメタキシリレンジアミンとをアミド結合で交互に結合した高分子(例えば、ナイロンMXD6)などが挙げられる。
上記鞘部1Aの材料となるポリアミド樹脂としては、芯部1Bの材料よりも曲げ剛性の低いポリアミド樹脂を用いればよく、例えば、直鎖飽和脂肪族ポリアミドを好適に用いることができる。このような直鎖飽和脂肪族ポリアミドとしては、化学式3で表わされるカプロラクタムの開環重合体からなる高分子、例えばナイロン6、又は、化学式4で表わされるヘキサメチレンジアミンとアジピン酸との交互共重合体からなる高分子、例えばナイロン66、などが挙げられる。
本発明の人工毛髪1において、鞘部1Aの表面が平滑な面の場合には、光沢が生じる。この人工毛髪1の表面での不自然な光沢を消すためには、いわゆる艶消し処理を行なえばよい。 In the artificial hair 1 of the present invention, gloss is generated when the surface of the sheath 1A is a smooth surface. In order to erase the unnatural luster on the surface of the artificial hair 1, a so-called matting process may be performed.
図2は、本発明の人工毛髪の変形例についての構成を模式的に示す、長手方向の断面図である。図示するように、人工毛髪10の鞘部1Aの表面には、微細な凹凸部1Cが形成されている。このような微細な凹凸部1Cを形成した場合には、人工毛髪10に光が当ったときに乱反射が生じる。このため、人工毛髪の表面において光照射による反射のために光沢が生じなくなり、所謂艶消し効果が生じる。
ここで、微細な凹凸部1Cは、人工毛髪1の紡糸中、または紡糸後の繊維を砂、氷、ドライアイスなどの微小粉末によるブラスト処理によって付与することができる。人工毛髪1の紡糸中に形成する場合には、人工毛髪1の最外表面に球晶を形成すればよい。この際、球晶形成と、上記砂、氷、ドライアイスなどの微小粉末によるブラスト処理を組み合わせた処理でもよい。このような球晶、又はブラスト処理との組合せで形成した凹凸部は、光が乱反射されるように、可視光波長のオーダーよりも大きい凹凸部1Cとなるように形成すればよい。FIG. 2 is a longitudinal sectional view schematically showing a configuration of a modified example of the artificial hair of the present invention. As shown in the drawing, a fine uneven portion 1C is formed on the surface of the sheath portion 1A of the artificial hair 10. When such a fine uneven part 1C is formed, irregular reflection occurs when the artificial hair 10 is exposed to light. For this reason, the surface of the artificial hair is not glossy due to reflection by light irradiation, and a so-called matte effect is produced.
Here, the fine concavo-convex portion 1C can be imparted by blasting with fine powder such as sand, ice, and dry ice during spinning of the artificial hair 1 or after spinning. When the artificial hair 1 is formed during spinning, spherulites may be formed on the outermost surface of the artificial hair 1. At this time, a combination of spherulite formation and blasting with fine powder such as sand, ice, or dry ice may be used. What is necessary is just to form the uneven | corrugated | grooved part formed in combination with such a spherulite or a blast process so that it may become the uneven | corrugated | grooved part 1C larger than the order of visible light wavelength so that light may be diffusely reflected.
本発明の人工毛髪1,10は、装着者の好みに応じた着色をすることができる。この着色は紡糸時の原料となるポリマーの混練中に顔料及び/又は染料を配合してもよく、また紡糸後に人工毛髪を染色してもよい。 The artificial hair 1 and 10 of the present invention can be colored according to the wearer's preference. In this coloring, pigments and / or dyes may be blended during the kneading of the polymer as a raw material during spinning, and artificial hair may be dyed after spinning.
本発明の人工毛髪1,10によれば、芯部1Bに曲げ剛性の高いポリアミドを用い、鞘部1Aには芯部1Bよりも曲げ剛性の低いポリアミドを用いた鞘/芯構造とすることにより、温度や湿度に応じて曲げ剛性が変化し、人毛により近い挙動を示す人工毛髪を得ることができる。また、鞘部1Aの表面に微細な凹凸部1Cを設けた人工毛髪10によれば、艶消し効果が生じ、人工毛髪の物性値と風合いに一層近似する。 According to the artificial hairs 1 and 10 of the present invention, a polyamide having a high bending rigidity is used for the core portion 1B, and a sheath / core structure using a polyamide having a lower bending rigidity than the core portion 1B is used for the sheath portion 1A. In addition, it is possible to obtain artificial hair that changes its bending rigidity according to temperature and humidity and exhibits a behavior closer to that of human hair. Moreover, according to the artificial hair 10 which provided the fine uneven | corrugated | grooved part 1C on the surface of the sheath part 1A, a matte effect arises and it further approximates the physical-property value and texture of artificial hair.
次に、本発明の人工毛髪の製造方法について説明する。
図3は本発明の人工毛髪の製造に用いる紡糸機の概略図であり、図4は紡糸機に用いる吐出部の概略断面図である。図3に示すように、紡糸機20は、鞘部1Aとなるポリアミド樹脂の第1の溶融槽21と、芯部1Bとなるポリアミド樹脂の第2の溶融槽22と、これらの溶融槽21,22から供給される溶融液21A,22Aを吐出する吐出部23と、吐出部23の吐出口23Cから吐出する糸状溶融物を固化すると共に、表面に凹凸部を形成する温浴24と、その後、各段が延伸ロール25,27,29及び乾熱槽26,28,30からなる3段の延伸熱処理工程部を経て、糸表面にさらに凹凸部1Cをつけるためのブラスト機33と、ブラスト機33によって所望の程度に艶消しされた人工毛髪を巻き取る巻取機34と、を含み構成されている。Next, the manufacturing method of the artificial hair of this invention is demonstrated.
FIG. 3 is a schematic view of a spinning machine used for manufacturing the artificial hair of the present invention, and FIG. 4 is a schematic cross-sectional view of a discharge unit used in the spinning machine. As shown in FIG. 3, the spinning machine 20 includes a first melting tank 21 made of polyamide resin that becomes the sheath portion 1A, a second melting tank 22 made of polyamide resin that becomes the core portion 1B, and these melting tanks 21, A discharge part 23 for discharging the melts 21A and 22A supplied from the liquid 22; a warm bath 24 for solidifying the thread-like melt discharged from the discharge port 23C of the discharge part 23 and forming irregularities on the surface; By a blasting machine 33 for attaching a concavo-convex part 1C to the yarn surface after passing through a three-stage drawing heat treatment process part consisting of drawing rolls 25, 27, 29 and dry heat tanks 26, 28, 30 by a blasting machine 33 And a winder 34 that winds the artificial hair that has been matted to a desired degree.
溶融槽21,22は、ポリアミド樹脂のペレットを溶融するための加熱装置と、混練及び吐出部23へ供給するためのスクリューなどを備え、溶融液21A,22Aを吐出部23へ送液するギアポンプ21B,22Bを備えている。 The melting tanks 21 and 22 include a heating device for melting the polyamide resin pellets, a screw for supplying the kneading and discharging unit 23, and the like, and a gear pump 21 </ b> B that sends the melts 21 </ b> A and 22 </ b> A to the discharging unit 23. , 22B.
吐出部23の吐出口23Cから出た繊維は図示のとおり温浴、延伸、乾熱機構を経た後、静電防止用オイリング装置31と、寸法を安定させるために人工毛髪に掛けたテンションを緩和する延伸ロール32と、表面処理用のブラスト機33と、を通って巻取機34に巻き取られる。 As shown in the drawing, the fibers coming out from the discharge port 23C of the discharge unit 23 are subjected to a warm bath, stretching, and a dry heat mechanism, and then the anti-static oiling device 31 and the tension applied to the artificial hair to stabilize the dimensions are relaxed. The film is wound on a winder 34 through a drawing roll 32 and a blasting machine 33 for surface treatment.
図4に示すように、吐出部23は、同心円状に配設される二重の吐出口を有し、その中心円部23Bからは半芳香族ポリアミド樹脂溶融液22Aを、そして、中心円部23Bを囲む外環部23Aから直鎖飽和脂肪族ポリアミド樹脂溶融液21Aを、それぞれ吐出させる構造を有している。 As shown in FIG. 4, the discharge part 23 has a double discharge port arranged concentrically, the semi-aromatic polyamide resin melt 22A from the center circle part 23B, and the center circle part Each of the linear saturated aliphatic polyamide resin melts 21A is discharged from the outer ring portion 23A surrounding 23B.
次に、上記紡織機20による人工毛髪の製造方法について説明する。
上記紡糸機20を用いて、溶融槽21,22において、各ポリアミド樹脂をそれぞれに適した温度で溶融して、吐出部23へ送液し、吐出口の中心円部23Bから半芳香族ポリアミド樹脂溶融液22Aと、外環部23Aから直鎖飽和脂肪族ポリアミド樹脂溶融液21Aとを吐出口23Cから吐出させて、鞘/芯構造の糸とし、人工毛髪1,10を製造することができる。Next, a method for producing artificial hair by the textile machine 20 will be described.
Using the spinning machine 20, each polyamide resin is melted at a temperature suitable for each in the melting tanks 21 and 22 and fed to the discharge unit 23, and the semi-aromatic polyamide resin is discharged from the central circle part 23B of the discharge port. The artificial hair 1 and 10 can be manufactured by discharging the melt 22A and the linear saturated aliphatic polyamide resin melt 21A from the outer ring portion 23A from the discharge port 23C to form a sheath / core structure yarn.
この際、直鎖飽和脂肪族ポリアミド樹脂溶融液21Aをギヤポンプ21Bで一定時間送液した容量と、半芳香族ポリアミド樹脂溶融液22Aをギヤポンプ22Bで送液した容量との比率を、本発明においては鞘/芯容量比と呼ぶことにする。後述するように、人工毛髪10の曲げ剛性値を天然毛髪の曲げ剛性値に近似させるためには、鞘と芯との重量比である鞘/芯重量比は10/90〜35/65が好適な範囲となる。この鞘と芯との重量比を得るための製造条件としては、鞘/芯容量比として1/7〜1/2が好ましい値となり、この範囲が後述する人工毛髪1,10の曲げ剛性値などの物性値に好適である。この鞘/芯容量比が1/2より大きくなると、すなわち鞘部1Aの比率が大きくなると、人工毛髪1,10の芯部1Bの曲げ剛性値の増加に寄与する効果が小さくなる。一方、この鞘/芯容量比が1/7より小さくなると、すなわち芯部1Bの比率が大きくなると、曲げ剛性値が大きくなり過ぎて天然毛髪に近似しなくなり、好ましくない。
At this time, in the present invention, the ratio between the capacity of the linear saturated aliphatic polyamide resin melt 21A fed by the gear pump 21B for a predetermined time and the capacity of the semi-aromatic polyamide resin melt 22A fed by the gear pump 22B This is called the sheath / core volume ratio. As will be described later, in order to approximate the bending stiffness value of the artificial hair 10 to the bending stiffness value of natural hair, the sheath / core weight ratio, which is the weight ratio of the sheath to the core, is preferably 10/90 to 35/65. Range. As manufacturing conditions for obtaining the weight ratio between the sheath and the core, 1/7 to 1/2 is preferable as the sheath / core capacity ratio, and this range is a bending rigidity value of the artificial hairs 1 and 10 described later. It is suitable for the physical property values. When the sheath / core capacity ratio is larger than 1/2, that is, when the ratio of the sheath portion 1A is increased, the effect of contributing to an increase in the bending rigidity value of the core portion 1B of the artificial hair 1 and 10 is reduced. On the other hand, when the sheath / core capacity ratio is smaller than 1/7, that is, when the ratio of the core portion 1B is increased, the bending rigidity value becomes too large to approximate natural hair, which is not preferable.
人工毛髪1,10の紡糸時の延伸倍率は5〜6倍とすることができる。この延伸倍率は、従来のナイロン6単独の人工毛髪のそれよりも約2倍程度の値である。本発明の人工毛髪1,10においては、紡糸時の延伸倍率、糸径、曲げ剛性値などは、所望の設計に応じて適宜に設定することができる。この場合、人工毛髪1,10の鞘/芯の形状は、紡糸時の条件を適宜制御することにより、略同心円形状とすることができる。 The draw ratio during spinning of the artificial hairs 1 and 10 can be 5 to 6 times. This draw ratio is about twice that of conventional nylon 6 artificial hair alone. In the artificial hairs 1 and 10 of the present invention, the draw ratio, the yarn diameter, the bending rigidity value, etc. at the time of spinning can be appropriately set according to the desired design. In this case, the shape of the sheath / core of the artificial hairs 1 and 10 can be made into a substantially concentric shape by appropriately controlling the spinning conditions.
本発明による人工毛髪用紡糸では、吐出口23Cから引き出した糸を温浴24中で80℃以上の水中に通すことによって鞘部1Aの直鎖飽和脂肪族ポリアミド樹脂の表面に凹凸部1Cとなる球晶を発生成長させ、糸に天然毛髪と同じような外観を与え、不自然な光沢を消すための艶消しとして、人工毛髪10を製造することができる。 In the spinning for artificial hair according to the present invention, the sphere that becomes the uneven portion 1C is formed on the surface of the linear saturated aliphatic polyamide resin of the sheath portion 1A by passing the yarn drawn from the discharge port 23C through water of 80 ° C. or higher in the warm bath 24. The artificial hair 10 can be produced as a matte for generating and growing crystals, giving the yarn an appearance similar to natural hair, and removing unnatural luster.
糸の表面に微細な凹凸部1Cを付与する方法としては、上記球晶の発生成長による他、紡糸後の糸表面を砂、氷、ドライアイスなどの微粒子でブラストする方法、あるいは、糸表面を薬品処理する方法の何れか1つ、又はこれらを適宜組み合わせた方法を用いてもよい。 As a method for imparting fine irregularities 1C to the surface of the yarn, in addition to the generation and growth of spherulites, a method of blasting the yarn surface after spinning with fine particles such as sand, ice, dry ice, or the surface of the yarn Any one of chemical treatment methods or a combination of these methods may be used.
人工毛髪1,10として好適な色、外観を与えるために、紡糸時に顔料及び/又は染料を配合してもよく、また紡糸終了後に人工毛髪1,10自体を染色してもよい。 In order to give a color and appearance suitable for the artificial hairs 1 and 10, pigments and / or dyes may be blended at the time of spinning, or the artificial hairs 1 and 10 themselves may be dyed after the spinning.
以上のように、本発明の人工毛髪1,10は、曲げ剛性が異なるポリアミド樹脂による鞘/芯構造を有しているので、従来の直鎖飽和脂肪族ポリアミド樹脂単体の人工毛髪よりも曲げ剛性の高い人工毛髪1,10を、再現性よく製造することができる。また、人工毛髪1の表面に微細な凹凸部1Cを形成することによって、天然毛髪に近似した自然な光沢を付与し、毛髪としての自然な外観を付与することができる。 As described above, since the artificial hairs 1 and 10 of the present invention have a sheath / core structure made of polyamide resin having different bending rigidity, the bending rigidity is higher than that of the conventional straight hair saturated aliphatic polyamide resin alone. Artificial hairs 1 and 10 having high reproducibility can be produced with good reproducibility. Moreover, by forming the fine uneven part 1C on the surface of the artificial hair 1, it is possible to give a natural luster similar to natural hair and to give a natural appearance as hair.
次に、本発明の第2の実施形態に係る人工毛髪を用いたかつらについて説明する。
図5は、本発明の第2の実施形態による人工毛髪を用いたかつら構成を模式的に示す斜視図である。本発明の人工毛髪1,10を用いたかつら40は、かつらベース41に、人工毛髪1又は10が植設されて構成したかつらである。かつらベース41は、ネット状ベース或いは人工皮膚ベースから構成することができる。図示の場合には、かつらベース41がネット部材の網目に植設されている状態を示している。かつらベース41は、ネット状ベースと人工皮膚ベースを組み合わせて構成してもよく、かつらのデザインや用途に合わせたものであれば特に制限はない。Next, a wig using artificial hair according to the second embodiment of the present invention will be described.
FIG. 5 is a perspective view schematically showing a wig configuration using artificial hair according to the second embodiment of the present invention. The wig 40 using the artificial hairs 1 and 10 of the present invention is a wig configured by implanting the artificial hair 1 or 10 on the wig base 41. The wig base 41 can be constituted by a net-like base or an artificial skin base. In the case of illustration, the wig base 41 has shown the state currently implanted by the net | network of the net member. The wig base 41 may be configured by combining a net-like base and an artificial skin base, and is not particularly limited as long as it matches the design and application of the wig.
人工毛髪1,10の直径は、0.05〜0.1mm程度であればよい。また、その表面の鏡面光沢が抑えられ、天然毛髪に近似した光沢をもった人工毛髪10が好適に使用できる。人工毛髪1,10の色は、装着者の希望に応じて、黒色、茶色、ブロンドなど適宜に選択すればよい。使用者の脱毛部周辺の自毛に合わせた色の人工毛髪を選択すれば、自然感が増す。おしゃれ用のかつら又は付け毛とする場合は、本発明の人工毛髪に自毛と異なる着色でメッシュ状とするか、人工毛髪に基端部から先端部にかけて、例えば色調の濃淡を変化させるとか色彩を徐々に変化させてグラデーションを施すなどすればよい。 The diameter of the artificial hairs 1 and 10 may be about 0.05 to 0.1 mm. Further, the artificial hair 10 having a gloss similar to that of natural hair can be suitably used because the specular gloss of the surface is suppressed. The color of the artificial hairs 1 and 10 may be appropriately selected from black, brown, blonde, etc. according to the wearer's wishes. If artificial hair of a color that matches the hair around the user's hair removal part is selected, the natural feeling will increase. In the case of fashionable wigs or furs, the artificial hair of the present invention is meshed with a color different from that of the own hair, or the artificial hair is changed in color tone, for example, from the base end to the tip. You can gradually change the to give a gradation.
図6は、図5のかつらの湿度変化に対する挙動を模式的に示す拡大図であり、(A)は通常の湿度状態を示し、(B)は高湿度状態を示している。図においては、人工毛髪が真っ直ぐな直毛の場合を示している。
図6(A)に示すように、本発明のかつら40に植設される人工毛髪1,10は、天然毛髪に近似した曲げ剛性値をもっている。このため、湿度40〜60%前後の通常の環境下では、人工毛髪1,10の立ち上がりがよく、かつら40にボリューム感が生じる。
これに対して、本発明のかつら40が雨で濡れたり、高湿度の環境でかつらを装着している場合には、かつらに植設されている人工毛髪1,10の吸湿による曲げ剛性値が変化する特性、すなわち湿度の上昇に伴い曲げ剛性値が低下することによって、人工毛髪が柔らかくなり、図6(B)に示すように、垂れ下がり、ボリューム感が無くなる。さらに、吸収した水分が自然放置や乾燥により放湿されると、人工毛髪1,10は徐々に立ち上がり、再び元の状態に戻る。
また、人工毛髪1 ,10にカールが付いている場合には、天然毛髪と近似したカールの伸び方になり、直毛の場合と同様に、吸収した水分が自然放置や乾燥により放湿されると、カールが元に戻る。FIG. 6 is an enlarged view schematically showing the behavior of the wig in FIG. 5 with respect to humidity change, where (A) shows a normal humidity state and (B) shows a high humidity state. In the figure, the case where the artificial hair is straight straight hair is shown.
As shown in FIG. 6 (A), the artificial hairs 1 and 10 implanted in the wig 40 of the present invention have a bending rigidity value approximate to that of natural hair. For this reason, the artificial hairs 1 and 10 rise well in a normal environment with a humidity of around 40 to 60%, and the wig 40 has a sense of volume.
On the other hand, when the wig 40 of the present invention is wet with rain or is worn in a high humidity environment, the bending stiffness value due to moisture absorption of the artificial hairs 1 and 10 implanted in the wig is The changing characteristic, that is, the bending stiffness value decreases as the humidity increases, so that the artificial hair becomes soft and hangs down and the volume feeling disappears as shown in FIG. Further, when the absorbed moisture is released by natural standing or drying, the artificial hairs 1 and 10 gradually rise and return to the original state again.
In addition, when the artificial hairs 1 and 10 are curled, the curling is similar to that of natural hair, and the absorbed moisture is released by natural standing or drying as in the case of straight hair. Then Carl returns.
本発明のかつら40によれば、芯部1Bに曲げ剛性の高いポリアミドを用い、鞘部1Aには芯部1Bよりも剛性の低いポリアミドを用いた鞘/芯構造とした人工毛髪1,10を用い、これをかつらベースに植設しているので、温度や湿度に応じて曲げ剛性が変化し、天然毛髪により近い触感や挙動を有し、見栄えのよいかつらを得ることができる。さらに人工毛髪としてその表面に微細な凹凸部1Cが形成されている場合には、艶消し効果により、より天然毛髪に近い外観を示す。
また、本発明のかつら40が雨に濡れたり、装着者の汗により水分が付与された場合には、人工毛髪1,10が水分の吸湿性のよいポリアミド樹脂を用いているので、水分を吸収し、その重量の増加により人工毛髪1,10が垂れ下がり、天然毛髪に近い挙動を示す。これに対して、例えばポリエステルによる従来の人工毛髪を用いたかつらの場合は曲げ剛性が天然毛髪より高いので、かつらを装着し整髪してブレンドしていた自毛とかつらの人工毛髪とが水分付着により、自毛は頭皮側に垂れ下がるのに対して、ポリエステルの人工毛は立ち上がったままとなり、ポリエステルで成るかつらの毛髪と自毛との分離が生じて、不自然な外観を呈してしまうことになる。しかし本発明では、水分が付着すると自毛の垂れ下がりと実質的に同様にかつらの毛髪も垂れ下がるので、毛髪の分離が生じず、従って自毛と人工毛とが良く馴染んだ状態を維持することができる。According to the wig 40 of the present invention, the artificial hair 1, 10 having a sheath / core structure using a polyamide having a high bending rigidity for the core portion 1B and a polyamide having a rigidity lower than that of the core portion 1B is used for the sheath portion 1A. Since this is used and planted on the wig base, the bending rigidity changes according to the temperature and humidity, and a wig having a touch and behavior close to that of natural hair can be obtained. Furthermore, when the fine uneven | corrugated | grooved part 1C is formed in the surface as artificial hair, the external appearance close | similar to natural hair is shown according to the matte effect.
Further, when the wig 40 of the present invention gets wet in the rain or moisture is given by the wearer's sweat, the artificial hairs 1 and 10 use a polyamide resin with good moisture absorption, so that moisture is absorbed. However, the artificial hairs 1 and 10 hang down due to the increase in weight, and the behavior is close to that of natural hair. On the other hand, for example, wigs using conventional artificial hair made of polyester have higher bending rigidity than natural hair, so moisture is attached to the wig's own hair and wig's artificial hair. As a result, while the own hair hangs down to the scalp, the artificial hair of the polyester remains upright, and the wig's hair made of polyester separates from the own hair, resulting in an unnatural appearance. Become. However, in the present invention, when moisture adheres, the hair of the wig also hangs substantially in the same way as the sag of the own hair, so that no separation of the hair occurs, and therefore, the self-hair and the artificial hair can be maintained in a well-familiar state. it can.
次に本発明の実施例について詳細に説明する。
図3に示す紡糸機20を用いて、実施例1の人工毛髪10を製造した。芯部1Bのポリアミド樹脂としては、ナイロン6T(東洋紡績(株)製)を用い、鞘部1Aのポリアミド樹脂としてはナイロン6(東洋紡績(株)製)を用いた。温浴24は、80℃の温湯を用いた。鞘/芯容量比は、1/7として、吐出口温度を310℃に設定して、人工毛髪10を製造した。この実施例1の人工毛髪10の鞘/芯重量比は、12/88となった。
着色剤としては、上記鞘部1A又は芯部1Bに用いるポリアミド樹脂と、顔料を所定割合で混合して加熱溶融し、混練後に冷却してチップ状にした樹脂チップを用いた。この着色剤として用いる樹脂チップをマスターバッチと呼ぶことにする。実施例で使用したマスターバッチとして、黒色の無機顔料を3重量%含有した樹脂チップ、黄色の有機顔料を3重量%含有した樹脂チップ、赤色の有機顔料を4重量%含有した樹脂チップを用いた。Next, examples of the present invention will be described in detail.
The artificial hair 10 of Example 1 was manufactured using the spinning machine 20 shown in FIG. Nylon 6T (manufactured by Toyobo Co., Ltd.) was used as the polyamide resin for the core portion 1B, and nylon 6 (manufactured by Toyobo Co., Ltd.) was used as the polyamide resin for the sheath portion 1A. As the hot bath 24, hot water of 80 ° C. was used. The sheath / core volume ratio was set to 1/7, the discharge port temperature was set to 310 ° C., and the artificial hair 10 was produced. The sheath / core weight ratio of the artificial hair 10 of Example 1 was 12/88.
As the colorant, a resin chip in which the polyamide resin used for the sheath 1A or the core 1B and a pigment were mixed at a predetermined ratio, heated and melted, cooled after kneading, and formed into a chip shape was used. The resin chip used as the colorant is called a master batch. As master batches used in the examples, resin chips containing 3% by weight of a black inorganic pigment, resin chips containing 3% by weight of a yellow organic pigment, and resin chips containing 4% by weight of a red organic pigment were used. .
具体的には、最初に、第1の溶融槽21には、鞘部1Aの原料としてナイロン6チップ84g、マスターバッチとして黒5g,黄色10g、赤1g、合計100gの溶融樹脂21Aを投入した。そして、第2の溶融槽22には、芯部1Bの原料としてナイロン6Tチップ84g、マスターバッチとして黒5g,黄色10g、赤1g、合計100gの溶融樹脂22Aを投入した。
ギアポンプ22Bでナイロン6Tを吐出部23の中心吐出口23Bに、ギアポンプ21Bでナイロン6を外環吐出口23Aにそれぞれ送出し、ギアポンプ21B,22Bの回転数を調整して、押出し容量比を鞘/芯比で1/7とした。紡糸機は15孔の口金を用いて15本の繊維を紡出する機械である。
吐出口23Cを出た鞘/芯構造の繊維は、長さが1.5mで80℃の温湯からなる温浴24中を通過させ表面に球晶を発生させた。
その後、第1延伸ロール25と、180℃の第1乾熱槽26と、を通過させ延伸を行ない、第2延伸ロール27及び180℃の第2乾熱槽28を通してヒートセットし、さらに第3延伸ロール29、185℃の第3乾熱槽30を通して糸径寸法を安定させるための熱処理(アニーリング)をした後、静電防止のためのオイリング装置31に通した。
最終工程として、第4延伸ロール32及びブラスト機33に通して表面に微細なアルミナ粉を吹きつけて繊維表面を粗面化した後、巻取機34に巻き取った。この工程で延伸倍率が5.5倍、巻取り速度が150m/分となるように第1から第4までの延伸ロール25,27,29,32の速度を調整した。
製造した人工毛髪10の直径はいずれも40〜80μmであった。実施例1においては延伸倍率を5.5倍としたが、後述する実施例3で示すように、人工毛髪10の曲げ剛性は延伸倍率により調整することができた。Specifically, first, 84 g of nylon 6 chips as the raw material of the sheath portion 1A and 5 g of black, 10 g of yellow, 1 g of red, and a total of 100 g of the molten resin 21A were charged into the first melting tank 21. The second melting tank 22 was charged with 84 g of nylon 6T chip as a raw material for the core portion 1B and 5 g of black, 10 g of yellow, 1 g of red, and a total of 100 g of molten resin 22A as a master batch.
The gear pump 22B sends nylon 6T to the central discharge port 23B of the discharge part 23, and the gear pump 21B sends nylon 6 to the outer ring discharge port 23A, and adjusts the rotation speed of the gear pumps 21B and 22B to adjust the extrusion capacity ratio to the sheath / The core ratio was 1/7. The spinning machine is a machine that spins 15 fibers using a 15-hole die.
The sheath / core structure fiber exiting the discharge port 23C passed through a warm bath 24 made of warm water of 1.5 ° C. and 80 ° C. to generate spherulites on the surface.
Thereafter, the first stretching roll 25 and the first dry heat tank 26 at 180 ° C. are passed through and stretched, and heat-set through the second stretching roll 27 and the second dry heat tank 28 at 180 ° C. After heat treatment (annealing) for stabilizing the yarn diameter size through a drawing roll 29 and a third dry heat tank 30 at 185 ° C., it was passed through an oiling device 31 for preventing static electricity.
As a final step, the fiber surface was roughened by passing fine alumina powder on the surface through a fourth stretching roll 32 and a blasting machine 33, and then wound on a winder 34. In this step, the speeds of the first to fourth stretching rolls 25, 27, 29, and 32 were adjusted so that the stretching ratio was 5.5 times and the winding speed was 150 m / min.
The manufactured artificial hair 10 had a diameter of 40 to 80 μm. In Example 1, the draw ratio was 5.5 times, but as shown in Example 3 described later, the bending rigidity of the artificial hair 10 could be adjusted by the draw ratio.
各ギアポンプ21B,22Bを調整して鞘/芯容量比を1/5とした以外は、実施例1と同じ条件で鞘/芯構造からなる人工毛髪10を製造した。この実施例2の人工毛髪10鞘/芯重量比は、16.1/83.9であった。 An artificial hair 10 having a sheath / core structure was manufactured under the same conditions as in Example 1 except that the gear pumps 21B and 22B were adjusted so that the sheath / core volume ratio was 1/5. The artificial hair 10 sheath / core weight ratio of Example 2 was 16.1 / 83.9.
各ギアポンプ21B,22Bを調整して鞘/芯容量比を1/3とした以外は、実施例1と同じ条件で鞘/芯構造からなる人工毛髪10を製造した。この実施例3の人工毛髪10の鞘/芯重量比は、24.2/75.8であり、その直径が80μmである。
図7は実施例3の人工毛髪10における曲げ剛性値の延伸倍率依存性を示す図である。図において、横軸は延伸倍率を示し、縦軸は曲げ剛性値(10-5gfcm2 /本)を示している。測定条件は温度22℃、湿度40%である。図7から明らかなように、延伸倍率が3倍及び5.5倍の曲げ剛性値は、それぞれ、430×10-5gfcm2 /本、720×10-5gfcm2 /本であり、延伸倍率が増加することにより、曲げ剛性値が直線的に増加することが分かった。An artificial hair 10 having a sheath / core structure was manufactured under the same conditions as in Example 1 except that the gear pumps 21B and 22B were adjusted so that the sheath / core capacity ratio was 1/3. The sheath / core weight ratio of the artificial hair 10 of Example 3 is 24.2 / 75.8, and its diameter is 80 μm.
FIG. 7 is a diagram showing the dependency of the bending rigidity value on the draw ratio in the artificial hair 10 of Example 3. In FIG. In the figure, the horizontal axis indicates the draw ratio, and the vertical axis indicates the bending rigidity value (10 −5 gfcm 2 / piece). The measurement conditions are a temperature of 22 ° C. and a humidity of 40%. As can be seen from FIG. 7, the bending stiffness values when the draw ratio is 3 times and 5.5 times are 430 × 10 −5 gfcm 2 / piece and 720 × 10 −5 gfcm 2 / piece, respectively. It has been found that the bending stiffness value increases linearly as the value increases.
各ギアポンプ21B、22Bを調整して鞘/芯容量比を1/2とした以外は、実施例1と同じ条件で鞘/芯構造からなる人工毛髪10を製造した。この実施例4の人工毛髪10の鞘/芯重量比は、32.3/67.7であった。 An artificial hair 10 having a sheath / core structure was manufactured under the same conditions as in Example 1 except that the gear pumps 21B and 22B were adjusted to reduce the sheath / core capacity ratio to ½. The sheath / core weight ratio of the artificial hair 10 of Example 4 was 32.3 / 67.7.
鞘部1Aのポリアミド樹脂としてナイロン66(三菱エンジニアリングプラスチックス(株)製)を用い、温浴24を92℃とし、吐出口温度を320℃に設定した以外は、実施例1と同じ条件で、実施例5の人工毛髪10を製造した。この実施例5の人工毛髪10の鞘/芯重量比は、16.2/83.8であった。
上記実施例1〜5の人工毛髪の製造条件を表1に示す。ここで、製造した人工毛髪10の直径はいずれも40〜80μmであった。
The production conditions for the artificial hairs of Examples 1 to 5 are shown in Table 1. Here, the diameter of the manufactured artificial hair 10 was 40-80 μm.
芯部1Bのポリアミド樹脂をナイロンMXD6(三菱ガス化学(株)製、商品名MXナイロン)とし、鞘部1Aのポリアミド樹脂をナイロン6(三菱エンジニアリングプラスチックス(株)製)とし、吐出口温度を270℃に設定し、鞘/芯容量比を1/7とした以外は、実施例1と同じ条件で、実施例6の人工毛髪10を製造した。この実施例6の人工毛髪10の鞘/芯重量比は、11.8/88.2であった。この実施例6の人工毛髪10において、実施例1〜5の芯部1Bに用いたナイロン6Tの代わりにナイロンMXD6を用いた。但し、実施例1の第1乾熱槽26の代わりに95℃の湿熱槽を用いて延伸し、第2乾熱槽28を150℃としてヒートセットを行い、その後第3延伸ロール29と、185℃の第3乾熱槽30とを通して糸径寸法を安定させるための熱処理(アニーリング)を行なった後、静電防止のためのオイリング装置31に通した。人工毛髪となる繊維表面を粗面化する最終工程は、実施例1と同様に行った。この工程で延伸倍率が5.6倍、第1から第4までの延伸ロール25、27、29、32の速度を巻き取り速度が150m/ 分となるように調整した。ここで、製造した人工毛髪10の直径はいずれも40〜80μmであった。 The polyamide resin of the core 1B is nylon MXD6 (product name MX nylon manufactured by Mitsubishi Gas Chemical Co., Ltd.), the polyamide resin of the sheath 1A is nylon 6 (manufactured by Mitsubishi Engineering Plastics), and the discharge port temperature is Artificial hair 10 of Example 6 was produced under the same conditions as Example 1 except that the temperature was set to 270 ° C. and the sheath / core volume ratio was 1/7. The sheath / core weight ratio of the artificial hair 10 of Example 6 was 11.8 / 88.2. In the artificial hair 10 of Example 6, nylon MXD6 was used instead of nylon 6T used for the core 1B of Examples 1-5. However, it stretches using a 95 degreeC wet heat tank instead of the 1st dry heat tank 26 of Example 1, makes the 2nd dry heat tank 28 150 degreeC, and heat-sets it after that, with the 3rd extending | stretching roll 29, 185 After heat treatment (annealing) for stabilizing the yarn diameter size through the third dry heat bath 30 at 0 ° C., the yarn was passed through an oiling device 31 for preventing static electricity. The final step of roughening the surface of the fiber to be artificial hair was performed in the same manner as in Example 1. In this step, the draw ratio was 5.6 times, and the speeds of the first to fourth drawing rolls 25, 27, 29, and 32 were adjusted so that the winding speed was 150 m / min. Here, the diameter of the manufactured artificial hair 10 was 40-80 μm.
鞘/芯容量比を1/5とした以外は、実施例6と同じ条件で、実施例7の人工毛髪10を製造した。この実施例7の人工毛髪10の鞘/芯重量比は、15.8/84.2であった。 The artificial hair 10 of Example 7 was manufactured under the same conditions as Example 6 except that the sheath / core volume ratio was 1/5. The sheath / core weight ratio of the artificial hair 10 of Example 7 was 15.8 / 84.2.
鞘/芯容量比を1/4とした以外は、実施例6と同じ条件で、実施例8の人工毛髪10を製造した。この実施例8の人工毛髪10の鞘/芯重量比は、18.9/81.1であった。 Artificial hair 10 of Example 8 was produced under the same conditions as Example 6 except that the sheath / core volume ratio was set to 1/4. The sheath / core weight ratio of the artificial hair 10 of this Example 8 was 18.9 / 81.1.
鞘/芯容量比を1/3とした以外は、実施例6と同じ条件で、実施例9の人工毛髪10を製造した。この実施例9の人工毛髪10の鞘/芯重量比は、23.8/76.2であった。 Artificial hair 10 of Example 9 was produced under the same conditions as Example 6 except that the sheath / core volume ratio was 1/3. The sheath / core weight ratio of the artificial hair 10 of this Example 9 was 23.8 / 76.2.
鞘/芯容量比を1/2とした以外は、実施例6と同じ条件で、実施例10の人工毛髪10を製造した。この実施例10の人工毛髪10の鞘/芯重量比は、31.8/68.2であった。上記実施例6〜10の製造条件を表2に示す。ここで製造した人工毛髪10の直径はいずれも40〜80μmであった。
次に、比較例の人工毛髪について説明する。
(比較例1)
実施例1と同じ紡糸機を用い、吐出口温度を270℃とし、ただし第1の溶融槽21は使わず、鞘のない構造でナイロン6の糸径80μm、延伸倍率3.3の糸を製造した。Next, the artificial hair of the comparative example will be described.
(Comparative Example 1)
The same spinning machine as in Example 1 was used, the discharge port temperature was set to 270 ° C., but the first melting tank 21 was not used, and a nylon 6 yarn diameter of 80 μm and a draw ratio of 3.3 was manufactured without a sheath. did.
(比較例2)
実施例1と同じ紡糸機を用い、吐出口温度を310℃とし、ただし第1溶融槽21は使わず、鞘のない構造でナイロン6Tの糸径80μm、延伸倍率5.5の糸を製造した。(Comparative Example 2)
The same spinning machine as in Example 1 was used, the discharge port temperature was 310 ° C., but the first melting tank 21 was not used, and a nylon 6T yarn diameter of 80 μm and a draw ratio of 5.5 was manufactured with a sheathless structure. .
(比較例3)
実施例1と同じ紡糸機を用い、芯部1Bをポリエステル(東レ(株)製)、鞘部1Aをナイロン6とし、吐出口温度を290℃とし、鞘/芯容量比が1/1、糸径が80μm、延伸倍率5.5の糸を製造した。(Comparative Example 3)
Using the same spinning machine as in Example 1, the core 1B is made of polyester (manufactured by Toray Industries, Inc.), the sheath 1A is made of nylon 6, the outlet temperature is 290 ° C., the sheath / core volume ratio is 1/1, and the yarn A yarn having a diameter of 80 μm and a draw ratio of 5.5 was produced.
(比較例4)
実施例1と同じ紡糸機を用い、吐出口温度を270℃とし、ただし第1溶融槽21は使わず、鞘のない構造とした以外は、実施例6と同一の条件及び方法で、糸径80μm、延伸倍率5.6のナイロンMXD6からなる糸を製造した。(Comparative Example 4)
The yarn diameter is the same as in Example 6 except that the same spinning machine as in Example 1 is used, the discharge port temperature is 270 ° C., except that the first melting tank 21 is not used and the sheath is not provided. A yarn made of nylon MXD6 having a thickness of 80 μm and a draw ratio of 5.6 was produced.
(比較例5)
実施例1と同じ紡糸機を用い、吐出口温度を270℃とし、ただし第1溶融槽21は使わず、鞘のない構造とした以外は、実施例6と同一の条件及び方法で、糸径80μm、延伸倍率5.6のナイロンMXD6とナイロン6との混合ポリアミドからなる糸を製造した。ナイロンMXD6とナイロン6との重量比は、90:10とした。上記比較例1〜5の顔料配合比は同じであり、黒、黄色、赤の配合比を、それぞれ、0.15%、0.30%、0.04%とした。製造条件を表3に示す。
The yarn diameter is the same as in Example 6 except that the same spinning machine as in Example 1 is used, the discharge port temperature is 270 ° C., except that the first melting tank 21 is not used and the sheath is not provided. A yarn made of a mixed polyamide of nylon MXD6 and nylon 6 having a diameter of 5.6 and a draw ratio of 5.6 was manufactured. The weight ratio of nylon MXD6 to nylon 6 was 90:10. The pigment blend ratios of Comparative Examples 1 to 5 are the same, and the blend ratios of black, yellow, and red were 0.15%, 0.30%, and 0.04%, respectively. The production conditions are shown in Table 3.
次に、実施例1の人工毛髪10の芯部1Bにナイロン6T又はMXD6を、鞘部1Aにナイロン6を用いた理由について説明する。
表4は、比較例1のナイロン6、比較例2のナイロン6T、比較例4のナイロンMXD6の単体を使用して製造した人工毛髪の22℃における曲げ剛性値の湿度依存性を示す表である。曲げ剛性値は、後述するシングルヘアーベンディングテスター(カトーテック(株)製)を用いて測定した。
表4から明らかなように、比較例1のナイロン6を用いた人工毛髪の曲げ剛性値は、湿度40%、60%、80%において、それぞれ、510×10-5gfcm2 /本、340×10-5gfcm2 /本、250×10-5gfcm2 /本であった。表には示していないが、ナイロン66を用いた人工毛髪の曲げ剛性値及びその湿度依存性もナイロン6と同様の値であった。
比較例2のナイロン6Tを用いた人工毛髪の曲げ剛性値は、湿度40%、60%、80%において、それぞれ、980×10-5gfcm2 /本、920×10-5gfcm2 /本、860×10-5gfcm2 /本であった。
比較例4のナイロンMXD6を用いた人工毛髪の曲げ剛性値は、湿度40%、60%、80%において、それぞれ、940×10-5gfcm2 /本、870×10-5gfcm2 /本、780×10-5gfcm2 /本であった。これから、ナイロン6T及びナイロンMXD6を用いた人工毛髪が、ナイロン6又はナイロン66の人工毛髪に比べて高い曲げ剛性値を示していることが分かる。
従って、実施例1〜10の人工毛髪は、芯部1Bが曲げ剛性の高いナイロン6T又はナイロンMXD6からなるポリアミド樹脂で、鞘部1Aが芯部1Bよりも曲げ剛性値の低いナイロン6又はナイロン66からなるポリアミド樹脂であることが明らかとなった。
Table 4 is a table showing the humidity dependence of the bending stiffness value at 22 ° C. of artificial hair produced by using nylon 6 of comparative example 1, nylon 6T of comparative example 2 and nylon MXD6 of comparative example 4 alone. . The bending stiffness value was measured using a single hair bending tester (manufactured by Kato Tech Co., Ltd.) described later.
As is apparent from Table 4, the bending stiffness values of the artificial hair using nylon 6 of Comparative Example 1 are 510 × 10 −5 gfcm 2 / bar and 340 × at 40%, 60% and 80%, respectively. 10 −5 gfcm 2 / line and 250 × 10 −5 gfcm 2 / line. Although not shown in the table, the bending stiffness value of artificial hair using nylon 66 and its humidity dependency were the same as those of nylon 6.
The bending stiffness values of the artificial hair using nylon 6T of Comparative Example 2 were 980 × 10 −5 gfcm 2 / bar, 920 × 10 −5 gfcm 2 / bar at 40%, 60%, and 80%, respectively. It was 860 * 10 < -5 > gfcm < 2 > / book.
The bending stiffness values of the artificial hair using nylon MXD6 of Comparative Example 4 were 940 × 10 −5 gfcm 2 / bar, 870 × 10 −5 gfcm 2 / bar, respectively, at a humidity of 40%, 60%, and 80%. It was 780 * 10 < -5 > gfcm < 2 > / book. From this, it can be seen that the artificial hair using nylon 6T and nylon MXD6 has a higher bending rigidity value than the artificial hair of nylon 6 or nylon 66.
Therefore, the artificial hair of Examples 1 to 10 is a polyamide resin in which the core portion 1B is made of nylon 6T or nylon MXD6 having high bending rigidity, and the sheath portion 1A is nylon 6 or nylon 66 having a bending rigidity value lower than that of the core portion 1B. It became clear that it was a polyamide resin consisting of.
次に、上記実施例1〜10及び比較例1〜5で製造した人工毛髪の諸特性について説明する。
図8は、実施例2で作った人工毛髪の断面を示す電子顕微鏡像である。電子の加速電圧は15kVで、倍率は800倍である。この人工毛髪10の鞘/芯容量比は1/5であり、その直径は80μm、延伸倍率は、5.5倍である。図から明らかなように、芯部1Bとして半芳香族ポリアミド(ナイロン6T)、その周囲に鞘部1Aとして直鎖飽和脂肪族ポリアミド(ナイロン6)からなる鞘/芯構造が形成されていることが分かる。Next, various characteristics of the artificial hair manufactured in Examples 1 to 10 and Comparative Examples 1 to 5 will be described.
FIG. 8 is an electron microscopic image showing a cross section of the artificial hair produced in Example 2. The electron acceleration voltage is 15 kV and the magnification is 800 times. The artificial hair 10 has a sheath / core volume ratio of 1/5, a diameter of 80 μm, and a draw ratio of 5.5 times. As is apparent from the figure, a sheath / core structure formed of a semi-aromatic polyamide (nylon 6T) as the core portion 1B and a linear saturated aliphatic polyamide (nylon 6) as the sheath portion 1A is formed around it. I understand.
図9は、実施例2の人工毛髪10の表面を示す電子顕微鏡像である。電子の加速電圧は15kVで、倍率は700倍である。図から明らかなように、表面の直鎖飽和脂肪族ポリアミド(ナイロン6)に球晶が発生して成長し、表面に微細な凹凸部1Cが付与されることが分かる。 FIG. 9 is an electron microscopic image showing the surface of the artificial hair 10 of Example 2. The electron acceleration voltage is 15 kV and the magnification is 700 times. As is apparent from the figure, it is understood that spherulites are generated and grown on the linear saturated aliphatic polyamide (nylon 6) on the surface, and fine uneven portions 1C are imparted on the surface.
図10は、実施例3の人工毛髪10の断面を示す電子顕微鏡像である。電子の加速電圧は15kVで、倍率は900倍である。この人工毛髪10の鞘/芯容量比は1/3であり、その直径は80μm、延伸倍率は、5.5倍である。図から明らかなように、芯部1Bとして半芳香族ポリアミド(ナイロン6T)、その周囲に鞘部1Aとして直鎖飽和脂肪族ポリアミド(ナイロン6)からなる鞘/芯構造が形成されていることが分かる。 FIG. 10 is an electron microscopic image showing a cross section of the artificial hair 10 of Example 3. The electron acceleration voltage is 15 kV and the magnification is 900 times. The artificial hair 10 has a sheath / core volume ratio of 1/3, a diameter of 80 μm, and a draw ratio of 5.5 times. As is apparent from the figure, a sheath / core structure formed of a semi-aromatic polyamide (nylon 6T) as the core portion 1B and a linear saturated aliphatic polyamide (nylon 6) as the sheath portion 1A is formed around it. I understand.
図11は、比較例3の鞘/芯構造を有する人工毛髪の断面を示す電子顕微鏡像である。電子の加速電圧は15kVで、倍率は300倍である。
比較例3の人工毛髪は、芯部1Bがポリエステル、鞘部1Aが直鎖飽和脂肪族ポリアミド(ナイロン6)からなる鞘/芯構造を有している。鞘/芯容量比は1/1であり、糸径80μm、延伸倍率が5.5であった。図から明らかなように、芯部1Bと鞘部1Aの界面に剥離が認められ、繊維が白茶けて、着色した色が変色したように見えてしまい、このような鞘/芯構造が人工毛髪に適さないことが判明した。FIG. 11 is an electron microscopic image showing a cross section of artificial hair having a sheath / core structure of Comparative Example 3. The electron acceleration voltage is 15 kV, and the magnification is 300 times.
The artificial hair of Comparative Example 3 has a sheath / core structure in which the core portion 1B is made of polyester and the sheath portion 1A is made of a linear saturated aliphatic polyamide (nylon 6). The sheath / core volume ratio was 1/1, the yarn diameter was 80 μm, and the draw ratio was 5.5. As is apparent from the figure, peeling is observed at the interface between the core 1B and the sheath 1A, the fibers appear brownish, and the colored color looks discolored. Such a sheath / core structure is artificial hair. Turned out to be unsuitable.
次に、実施例及び比較例における人工毛髪の曲げ剛性値の測定結果について説明する。曲げ剛性値は、前記したように、一般に繊維などに適用される物性値であり、毛髪の場合にも風合い(外観、触感、質感)などの感覚的な性状に相関する物性として近年認知されている。繊維の曲げ剛性の測定は織物に関して川端式測定法とその原理が広く知られているが、これを改良したシングルヘアーベンディングテスター(カトーテック(株)製、モデルKES−FB2−SH)を用いて、人工毛髪の曲げ剛性を測定した。測定方法としては、試料となる本発明の実施例、比較例の人工毛髪及び天然毛髪の何れの場合にも、各1cmの1本について、毛髪全体を一定曲率まで円弧状に等速度で曲げ、それに伴う微小な曲げモーメントを検出し、曲げモーメントと曲率の関係を測定した。これから、曲げモーメント/曲率変化により曲げ剛性値を求めた。代表的な測定条件を以下に示す。
(測定条件)
チャック間距離:1cm
トルク検出器:トーションワイヤー(スチールワイヤー)のねじれ検出方式
トルク感度:1.0gf・cm(フルスケール10Vにおいて)
曲率:±2.5cm-1
曲げ変位速度:0.5cm-1/sec
測定サイクル:1往復
ここで、チャックは、上記1cmの各毛髪を挟み込む機構である。Next, the measurement result of the bending rigidity value of the artificial hair in an Example and a comparative example is demonstrated. As described above, the bending stiffness value is a physical property value that is generally applied to fibers and the like, and has recently been recognized as a physical property that correlates with sensory properties such as texture (appearance, touch, texture) even in the case of hair. Yes. The measurement of the bending stiffness of fibers is well known for the Kawabata measurement method and its principle for fabrics, but using a single hair bending tester (model KES-FB2-SH, manufactured by Kato Tech Co., Ltd.), an improved version of this method. The bending stiffness of the artificial hair was measured. As a measuring method, in any case of the example of the present invention as a sample, the artificial hair of the comparative example and the natural hair, for each one of 1 cm, the whole hair is bent at a constant velocity in an arc shape to a constant curvature, A small bending moment was detected and the relationship between bending moment and curvature was measured. From this, the bending stiffness value was determined from the bending moment / curvature change. Typical measurement conditions are shown below.
(Measurement condition)
Distance between chucks: 1cm
Torque detector: Torsion wire (steel wire) twist detection method Torque sensitivity: 1.0 gf · cm (at 10V full scale)
Curvature: ± 2.5cm -1
Bending displacement speed: 0.5cm -1 / sec
Measurement cycle: 1 reciprocation Here, the chuck is a mechanism for sandwiching each hair of 1 cm.
図12は、実施例1〜5及び比較例1、2における、人工毛髪の曲げ剛性値の湿度依存性を示すグラフである。図において、横軸は湿度(%)を、縦軸は曲げ剛性値(10-5gfcm2 /本)を示している。測定温度は22℃である。図12では、実施例及び比較例の人工毛髪の曲げ剛性値の湿度依存性を、天然毛髪の特性と共に示している。天然毛髪は個体差が大きいので、年齢層20〜50歳代各層の男性25名、女性38名から頭髪を採取し、そのうち径80μmの試料についての曲げ剛性値を測定し、その平均値を標準値としたほか、図には最大値と最小値も示した。天然毛髪の曲げ剛性値の平均値は、湿度が40%及び80%では、それぞれ、720×10-5gfcm2 /本及び510×10-5gfcm2 /本であり、湿度の上昇と共に、ほぼ単調に減少する特性を示すことが分かる。
これに対して、天然毛髪の曲げ剛性値の最大値は、湿度40%及び80%で、それぞれ740×10-5gfcm2 /本、600×10-5gfcm2 /本であった。また、その最小値は、湿度40%及び80%で、それぞれ660×10-5gfcm2 /本と420×10-5gfcm2 /本であり、天然毛髪の曲げ剛性値は幅を有していることが判明した。FIG. 12 is a graph showing the humidity dependence of the bending stiffness value of artificial hair in Examples 1 to 5 and Comparative Examples 1 and 2. In the figure, the horizontal axis represents the humidity (%), and the vertical axis represents the bending stiffness value (10 −5 gfcm 2 / line). The measurement temperature is 22 ° C. In FIG. 12, the humidity dependence of the bending stiffness value of the artificial hair of the example and the comparative example is shown together with the characteristics of natural hair. Since natural hair has large individual differences, hair is collected from 25 males and 38 females in each age group of 20 to 50 years old. Among them, the bending stiffness value of a sample having a diameter of 80 μm is measured, and the average value is standard. In addition to the values, the maximum and minimum values are also shown in the figure. The average value of the flexural rigidity value of natural hair is 720 × 10 −5 gfcm 2 / string and 510 × 10 −5 gfcm 2 / string, respectively, when the humidity is 40% and 80%. It can be seen that the characteristic decreases monotonously.
On the other hand, the maximum value of the bending stiffness value of natural hair was 740 × 10 −5 gfcm 2 / bar and 600 × 10 −5 gfcm 2 / bar, respectively, at a humidity of 40% and 80%. The minimum values are 40% and 80% humidity, respectively 660 × 10 −5 gfcm 2 / bar and 420 × 10 −5 gfcm 2 / bar, and the bending stiffness value of natural hair has a width. Turned out to be.
実施例1の人工毛髪10は、糸径が80μm、鞘/芯容量比が1/7であり、湿度40%の条件では、曲げ剛性値は、天然毛髪の最大値と等しい740×10-5gfcm2 /本であり、湿度の上昇につれて曲げ剛性値が徐々に減少し、湿度60%では約700×10-5gfcm2 /本まで低下し、湿度80%では約650×10-5gfcm2 /本まで低下した。
この結果から、実施例1の人工毛髪10の場合には、天然毛髪の曲げ剛性値よりも高い曲げ剛性値を示しているが、後述する比較例1のナイロン6からなる人工毛髪や、比較例2のナイロン6Tからなる人工毛髪の曲げ剛性値と比較すると、天然毛髪に類似した曲げ剛性値と湿度依存性を示すことが判明した。The artificial hair 10 of Example 1 has a yarn diameter of 80 μm, a sheath / core volume ratio of 1/7, and a bending rigidity value equal to the maximum value of natural hair at a humidity of 40%, 740 × 10 −5. gfcm a 2 / present, it decreases rigidity bending with increasing humidity gradually reduced to about 700 × 10 -5 gfcm 2 / present at 60% humidity, at 80% humidity to about 650 × 10 -5 gfcm 2 / It fell to a book.
From this result, in the case of the artificial hair 10 of Example 1, the bending rigidity value higher than that of natural hair is shown. However, the artificial hair made of nylon 6 of Comparative Example 1 described later, and Comparative Example When compared with the bending stiffness value of artificial hair made of 2 nylon 6T, it was found that the bending stiffness value and humidity dependency similar to natural hair were exhibited.
実施例2の人工毛髪10は、糸径が80μm、鞘/芯容量比が1/5であり、湿度40%の条件では、曲げ剛性値は、天然毛髪と同じ720×10-5gfcm2 /本であり、湿度が45%までは曲げ剛性値が徐々に低下し、約650×10-5gfcm2 /本まで低下する。次に、湿度が45〜60%までは、曲げ剛性値は、約650×10-5gfcm2 /本で一定となる。そして、湿度が60〜80%までの間においては、曲げ剛性値は徐々に減少し、湿度が80%では、約600×10-5gfcm2 /本に低下した。
この結果から、実施例2の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値と一致し、湿度上昇と共に、曲げ剛性値が減少し、天然毛髪に類似の曲げ剛性値と湿度依存性を示すことが判明した。The artificial hair 10 of Example 2 has a yarn diameter of 80 μm, a sheath / core volume ratio of 1/5, and a bending rigidity value of 720 × 10 −5 gfcm 2 / same as that of natural hair under conditions of a humidity of 40%. The bending rigidity value gradually decreases until the humidity is 45%, and decreases to about 650 × 10 −5 gfcm 2 / line. Next, when the humidity is 45 to 60%, the bending stiffness value is constant at about 650 × 10 −5 gfcm 2 / line. The bending stiffness value gradually decreased when the humidity was 60 to 80%, and decreased to about 600 × 10 −5 gfcm 2 / line when the humidity was 80%.
From this result, in the case of the artificial hair 10 of Example 2, the bending stiffness value of natural hair coincides with the bending stiffness value of natural hair at a humidity of 40%. It was found to show humidity dependency.
実施例3の人工毛髪10が実施例1と異なるのは、鞘/芯容量比が1/3である点である。湿度40%の条件では、曲げ剛性値は、天然毛髪と同じ720×10-5gfcm2 /本であり、湿度が40〜60%まで曲げ剛性値が低下し、約520×10-5gfcm2 /本まで低下する。次に、湿度が60〜80%までは、曲げ剛性値は、徐々に低下し、湿度が80%では、約480×10-5gfcm2 /本となった。
この結果から、実施例3の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値と一致し、湿度上昇と共に曲げ剛性値が減少し、湿度80%でも天然毛髪に極めて近い曲げ剛性値を示すことが判明した。The artificial hair 10 of Example 3 is different from Example 1 in that the sheath / core volume ratio is 1/3. Under the condition of a humidity of 40%, the bending rigidity value is 720 × 10 −5 gfcm 2 / bar, which is the same as that of natural hair, and the bending rigidity value decreases to a humidity of 40 to 60%, which is about 520 × 10 −5 gfcm 2. / Reduced to book. Next, when the humidity was 60 to 80%, the flexural rigidity value gradually decreased, and when the humidity was 80%, the value became about 480 × 10 −5 gfcm 2 / line.
From this result, in the case of the artificial hair 10 of Example 3, the bending stiffness value of the natural hair coincides with the bending stiffness value of natural hair at a humidity of 40%, and the bending stiffness value decreases with increasing humidity. It was found to show a stiffness value.
実施例4の人工毛髪10が実施例1と異なるのは、鞘/芯容量比が1/2である点である。湿度40%の条件では、曲げ剛性値は、天然毛髪と同じ720×10-5gfcm2 /本であり、湿度が40〜60%まで曲げ剛性値は低下し、約510×10-5gfcm2 /本まで低下する。次に、湿度が60〜80%までは、曲げ剛性値は徐々に低下し、湿度が80%では、約390×10-5gfcm2 /本となった。
この結果から、実施例4の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値と一致し、湿度上昇と共に曲げ剛性値が減少し、湿度80%での曲げ剛性値は、天然毛髪の曲げ剛性値の最小値付近を示すことが判明した。
実施例2〜4の人工毛髪10の曲げ剛性値が湿度40%以上では、実施例1のそれよりも低い値を示すのは、鞘部1Aの容量が実施例1のそれよりも大きい、つまり、芯部1Bの容量が小さいことによる。このため、本発明の人工毛髪においては、鞘/芯容量比を変化させることにより曲げ剛性値の湿度依存性を変化させることができる。
これにより、実施例2〜4の人工毛髪10の場合、湿度40%で天然毛髪の曲げ剛性値と一致し、湿度上昇と共に曲げ剛性値が減少し、天然毛髪に類似の湿度依存性を示すことが判明した。The artificial hair 10 of Example 4 differs from Example 1 in that the sheath / core volume ratio is 1/2. Under the condition of a humidity of 40%, the bending stiffness value is 720 × 10 −5 gfcm 2 / bar, which is the same as that of natural hair, and the bending stiffness value decreases to a humidity of 40 to 60%, about 510 × 10 −5 gfcm 2. / Reduced to book. Next, when the humidity was 60 to 80%, the flexural rigidity value gradually decreased, and when the humidity was 80%, the value became about 390 × 10 −5 gfcm 2 / line.
From this result, in the case of the artificial hair 10 of Example 4, it matches the bending stiffness value of natural hair at a humidity of 40%, the bending stiffness value decreases with increasing humidity, and the bending stiffness value at 80% humidity is It has been found that a value near the minimum value of the bending stiffness of natural hair is shown.
When the bending stiffness value of the artificial hair 10 of Examples 2 to 4 is 40% or higher, the value of the sheath portion 1A is larger than that of Example 1 because the value is lower than that of Example 1, that is, This is because the capacity of the core 1B is small. For this reason, in the artificial hair of the present invention, the humidity dependency of the bending stiffness value can be changed by changing the sheath / core volume ratio.
Thereby, in the case of the artificial hair 10 of Examples 2-4, it agrees with the bending rigidity value of natural hair at a humidity of 40%, the bending rigidity value decreases with increasing humidity, and exhibits similar humidity dependence to natural hair. There was found.
実施例5の人工毛髪10が実施例1と異なるのは、鞘部1Aがナイロン66から構成されている点であり、他は同一である。実施例5においては、湿度40%の条件では、曲げ剛性値は天然毛髪よりも大きい780×10-5gfcm2 /本であり、湿度が40〜50%まで曲げ剛性値がほぼ直線的に低下し、湿度50%では約650×10-5gfcm2 /本となる。そして、湿度が50〜80%までは、ほぼ実施例1と一致する傾きで曲げ剛性値が約600×10-5gfcm2 /本まで低下する。
この結果から、実施例5の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値よりも大きい値を示し、湿度上昇と共に曲げ剛性値が減少することが判明した。実施例5の人工毛髪10の場合には、曲げ剛性値が湿度40%〜50%の範囲で、実施例1〜4のそれよりも大きい値を示した。
これにより、実施例5の人工毛髪10の場合も、天然毛髪の曲げ剛性値と近い曲げ剛性値を示し、湿度上昇と共に、曲げ剛性値が減少し、天然毛髪に類似の曲げ剛性値と湿度依存性を示すことが判明した。The artificial hair 10 of the fifth embodiment is different from the first embodiment in that the sheath 1A is made of nylon 66, and the others are the same. In Example 5, when the humidity is 40%, the bending stiffness value is 780 × 10 −5 gfcm 2 / bar, which is larger than that of natural hair, and the bending stiffness value decreases almost linearly until the humidity is 40 to 50%. When the humidity is 50%, it is about 650 × 10 −5 gfcm 2 / line. When the humidity is 50 to 80%, the bending rigidity value decreases to about 600 × 10 −5 gfcm 2 / line with a slope substantially in accordance with Example 1.
From this result, in the case of the artificial hair 10 of Example 5, it was found that the humidity value was larger than the bending stiffness value of natural hair at a humidity of 40%, and the bending stiffness value decreased with increasing humidity. In the case of the artificial hair 10 of Example 5, the bending rigidity value was larger than that of Examples 1 to 4 in the range of humidity 40% to 50%.
Thereby, also in the case of the artificial hair 10 of Example 5, the bending rigidity value close | similar to the bending rigidity value of natural hair is shown, a bending rigidity value decreases with humidity rise, and the bending rigidity value and humidity dependence similar to natural hair are shown. It was found to show sex.
比較例1の人工毛髪はナイロン6からなり、糸径が80μm、延伸倍率3.3である。この人工毛髪の場合には、湿度40%で曲げ剛性値が約510×10-5gfcm2 /本であり、天然毛髪の約70%の値となった。また、湿度上昇と共に曲げ剛性値はほぼ単調に減少し、湿度80%では、曲げ剛性値は約250×10-5gfcm2 /本となった。この値は天然毛髪の約50%の値である。比較例1の曲げ剛性値は、測定した全湿度範囲で、天然毛髪や実施例1〜5の人工毛髪よりも著しく小さいことが分かった。The artificial hair of Comparative Example 1 is made of nylon 6, has a yarn diameter of 80 μm, and a draw ratio of 3.3. In the case of this artificial hair, the bending stiffness value was about 510 × 10 −5 gfcm 2 / bar at a humidity of 40%, which was about 70% of that of natural hair. Further, the bending stiffness value decreased almost monotonously with increasing humidity, and at 80% humidity, the bending stiffness value was about 250 × 10 −5 gfcm 2 / line. This value is about 50% of natural hair. It was found that the flexural rigidity value of Comparative Example 1 was significantly smaller than natural hair and artificial hairs of Examples 1 to 5 in the entire humidity range measured.
比較例2の人工毛髪は、ナイロン6Tからなり、糸径が80μm、延伸倍率5.5である。この人工毛髪の場合には、湿度40%で曲げ剛性値が約980×10-5gfcm2 /本であり、天然毛髪の約136%の大きな値となった。また、湿度上昇と共に曲げ剛性値はほぼ単調に減少し、湿度80%では、曲げ剛性値は約860×10-5gfcm2 /本となった。この値は天然毛髪の約170%の値である。比較例2の曲げ剛性値は、測定した全湿度範囲で天然毛髪や実施例1〜5の人工毛髪よりも著しく大きいことが分かった。
なお、比較例3の場合には、上述したように、鞘部1Aと芯部1Bの剥離が生じ、人工毛髪としては使用できないので、曲げ剛性値の測定は行なわなかった。The artificial hair of Comparative Example 2 is made of nylon 6T, has a yarn diameter of 80 μm, and a draw ratio of 5.5. In the case of this artificial hair, the bending stiffness value was about 980 × 10 −5 gfcm 2 / bars at a humidity of 40%, which was a large value of about 136% of natural hair. Also, the bending stiffness value decreased almost monotonously with increasing humidity, and at 80% humidity, the bending stiffness value was about 860 × 10 −5 gfcm 2 / line. This value is about 170% of natural hair. The bending stiffness value of Comparative Example 2 was found to be significantly greater than that of natural hair and the artificial hairs of Examples 1-5 in the entire humidity range measured.
In the case of Comparative Example 3, as described above, the sheath portion 1A and the core portion 1B were peeled off and could not be used as artificial hair, so the bending stiffness value was not measured.
次に、実施例6〜10の人工毛髪における曲げ剛性値の湿度依存性について説明する。図13は、実施例6〜10及び比較例1、4、5における人工毛髪の曲げ剛性値の湿度依存性を示すグラフである。図において、横軸は湿度(%)を示し、縦軸は曲げ剛性値(10-5gfcm2 /本)を示している。測定温度は22℃である。図13では、図12と同様に、天然毛髪の曲げ剛性値として、その平均値、最大値及び最小値も合わせて示している。実施例6の人工毛髪10が実施例1と異なるのは、芯部1BがナイロンMXD6から構成されている点であり、糸径が80μm、鞘/芯容量比が1/7である。
図13から明らかなように、実施例6の人工毛髪10の場合には、湿度40%の条件では、曲げ剛性値は天然毛髪の平均値とほぼ同等の730×10-5gfcm2 /本であり、湿度が上昇するにつれて徐々に曲げ剛性値が低下する。湿度60%では約660×10-5gfcm2 /本まで低下し、湿度80%では約600×10-5gfcm2 /本まで低下した。
この結果から、実施例6の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値とほぼ同等の曲げ剛性値を示し、湿度上昇と共に曲げ剛性値が減少し、天然毛髪に類似した挙動を示すことが分かった。即ち、実施例6の人工毛髪10は、天然毛髪に類似の曲げ剛性値と湿度依存性を示すことが判明した。Next, the humidity dependence of the bending rigidity value in the artificial hair of Examples 6 to 10 will be described. FIG. 13 is a graph showing the humidity dependence of the bending stiffness value of artificial hair in Examples 6 to 10 and Comparative Examples 1, 4, and 5. In the figure, the horizontal axis represents humidity (%), and the vertical axis represents the bending stiffness value (10 −5 gfcm 2 / line). The measurement temperature is 22 ° C. In FIG. 13, as in FIG. 12, the average value, the maximum value, and the minimum value are also shown as the bending stiffness value of natural hair. The artificial hair 10 of Example 6 is different from Example 1 in that the core 1B is made of nylon MXD6, and the yarn diameter is 80 μm and the sheath / core capacity ratio is 1/7.
As can be seen from FIG. 13, in the case of the artificial hair 10 of Example 6, the bending stiffness value is 730 × 10 −5 gfcm 2 / bar approximately equal to the average value of natural hair under the condition of humidity of 40%. Yes, the bending stiffness value gradually decreases as the humidity increases. It decreased to about 660 × 10 −5 gfcm 2 / line at a humidity of 60%, and decreased to about 600 × 10 −5 gfcm 2 / line at a humidity of 80%.
From this result, in the case of the artificial hair 10 of Example 6, the bending stiffness value almost equal to the bending stiffness value of natural hair is shown at a humidity of 40%, and the bending stiffness value decreases with increasing humidity, which is similar to natural hair. It was found to show the behavior. That is, it was found that the artificial hair 10 of Example 6 showed a bending rigidity value and humidity dependency similar to natural hair.
実施例7の人工毛髪10が実施例6と異なるのは、鞘芯容量比が1/5である点であり、他は同一である。
図13から明らかなように、実施例7の人工毛髪10の場合には、湿度40%の条件では、曲げ剛性値は天然毛髪の平均値とほぼ同等の730×10-5gfcm2 /本であり、そして、湿度が50%付近まで上昇するにつれて曲げ剛性値が低下し、620×10-5gfcm2 /本まで低下する。次に、湿度60%までは曲げ剛性値が徐々に低下し、湿度60%では、610×10-5gfcm2 /本となる。さらに、湿度が60〜80%においては、曲げ剛性値が徐々に低下し、湿度が80%では560×10-5gfcm2 /本となる。
この結果から、実施例7の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値とほぼ同等の曲げ剛性値を示し、湿度上昇と共に曲げ剛性値が減少し、天然毛髪に類似した挙動を示すことが分かった。即ち、実施例7の人工毛髪10は、天然毛髪に類似の曲げ剛性値と湿度依存性を示すことが判明した。The artificial hair 10 of Example 7 differs from Example 6 in that the sheath-core volume ratio is 1/5, and the others are the same.
As is clear from FIG. 13, in the case of the artificial hair 10 of Example 7, the bending stiffness value is 730 × 10 −5 gfcm 2 / line, which is almost equal to the average value of natural hair, under the condition of humidity of 40%. In addition, as the humidity increases to around 50%, the bending stiffness value decreases and decreases to 620 × 10 −5 gfcm 2 / line. Next, the bending rigidity value gradually decreases up to a humidity of 60%, and reaches 610 × 10 −5 gfcm 2 / piece at a humidity of 60%. Furthermore, when the humidity is 60 to 80%, the bending rigidity value gradually decreases, and when the humidity is 80%, the value becomes 560 × 10 −5 gfcm 2 / line.
From this result, in the case of the artificial hair 10 of Example 7, the bending stiffness value almost equal to the bending stiffness value of natural hair is shown at a humidity of 40%, and the bending stiffness value decreases with increasing humidity, which is similar to natural hair. It was found to show the behavior. That is, it was found that the artificial hair 10 of Example 7 showed a bending rigidity value and humidity dependency similar to natural hair.
実施例8の人工毛髪10が実施例6と異なるのは、鞘芯容量比が1/4である点であり、他は同一である。
図13から明らかなように、実施例8の人工毛髪10の場合には、湿度40%の条件で、天然毛髪の平均値とほぼ同等の730×10-5gfcm2 /本であり、湿度が40〜60%直前まで曲げ剛性値が低下し、湿度が約60%では、曲げ剛性値が560×10-5gfcm2 /本まで低下する。
次に、湿度が60〜80%においては、曲げ剛性値が徐々に低下し、湿度80%では490×10-5gfcm2 /本まで低下した。
この結果から、実施例8の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値とほぼ同等の曲げ剛性値を示し、湿度上昇と共に曲げ剛性値が減少するという天然毛髪に類似した挙動を示すことが分かった。The artificial hair 10 of Example 8 differs from Example 6 in that the sheath-core volume ratio is 1/4, and the others are the same.
As is clear from FIG. 13, in the case of the artificial hair 10 of Example 8, it is 730 × 10 −5 gfcm 2 / line which is almost equal to the average value of natural hair under the condition of humidity of 40%, and the humidity is The bending stiffness value decreases until just before 40 to 60%, and when the humidity is about 60%, the bending stiffness value decreases to 560 × 10 −5 gfcm 2 / line.
Next, when the humidity was 60 to 80%, the bending rigidity value gradually decreased, and when the humidity was 80%, the bending rigidity value decreased to 490 × 10 −5 gfcm 2 / line.
From this result, in the case of the artificial hair 10 of Example 8, it is similar to natural hair that shows a bending rigidity value almost equal to the bending rigidity value of natural hair at a humidity of 40%, and the bending rigidity value decreases with increasing humidity. It was found to show the behavior.
実施例9の人工毛髪10が実施例6と異なるのは、鞘芯容量比が1/3である点であり、他は同一である。
図13から明らかなように、実施例9の人工毛髪10の場合には、湿度40%の条件で、天然毛髪の平均値とほぼ同等の730×10-5gfcm2 /本であり、湿度が40〜60%付近直前まで曲げ剛性値が低下し、湿度が約60%では、曲げ剛性値が530×10-5gfcm2 /本まで低下する。次に、湿度が60〜80%においては、曲げ剛性値が徐々に低下し、湿度80%では440×10-5gfcm2 /本まで低下した。
この結果から、実施例9の人工毛髪10の場合には、湿度40%で天然毛髪の曲げ剛性値とほぼ同等の曲げ剛性値を示し、湿度上昇と共に曲げ剛性値が減少するという天然毛髪に類似した挙動を示すことが分かった。The artificial hair 10 of Example 9 differs from Example 6 in that the sheath-core volume ratio is 1/3, and the others are the same.
As is clear from FIG. 13, in the case of the artificial hair 10 of Example 9, it is 730 × 10 −5 gfcm 2 / line which is almost equal to the average value of natural hair under the condition of humidity of 40%, and the humidity is The bending rigidity value decreases until just before 40 to 60%, and when the humidity is about 60%, the bending rigidity value decreases to 530 × 10 −5 gfcm 2 / line. Next, when the humidity was 60 to 80%, the flexural rigidity value gradually decreased, and when the humidity was 80%, the value decreased to 440 × 10 −5 gfcm 2 / line.
From this result, in the case of the artificial hair 10 of Example 9, it is similar to natural hair that shows a bending rigidity value almost equal to the bending rigidity value of natural hair at a humidity of 40%, and the bending rigidity value decreases with increasing humidity. It was found to show the behavior.
実施例10の人工毛髪10が実施例6と異なるのは、鞘/芯容量比が1/2である点であり、他は同一である。
図13から明らかなように、実施例10の人工毛髪10の場合には、湿度40%の条件で、天然毛髪の平均値とほぼ同等の730×10-5gfcm2 /本であり、湿度が40〜60%付近直前まで曲げ剛性値が低下し、湿度が約60%では曲げ剛性値が490×10-5gfcm2 /本まで低下する。次に、湿度が60〜80%においては曲げ剛性値が徐々に低下し、曲げ剛性値が380×10-5gfcm2 /本まで低下した。
この結果から、実施例10の人工毛髪10は、湿度40%で天然毛髪の曲げ剛性値とほぼ同等の曲げ剛性値を有しており、湿度上昇と共に曲げ剛性値が減少していることを示している。湿度が60%付近を越えると、人工毛髪10の曲げ剛性値が天然毛髪の曲げ剛性値を下回っているが、上記比較例1のナイロン6からなる人工毛髪や、後述する比較例4のナイロンMXD6からなる人工毛髪の曲げ剛性値と比較すると、天然毛髪に類似した挙動を示すことが分かった。The artificial hair 10 of Example 10 differs from Example 6 in that the sheath / core volume ratio is 1/2, and the others are the same.
As is clear from FIG. 13, in the case of the artificial hair 10 of Example 10, it is 730 × 10 −5 gfcm 2 / line which is almost equal to the average value of natural hair under the condition of humidity of 40%, and the humidity is The bending stiffness value decreases until just before 40 to 60%, and when the humidity is about 60%, the bending stiffness value decreases to 490 × 10 −5 gfcm 2 / line. Next, when the humidity was 60 to 80%, the bending rigidity value gradually decreased, and the bending rigidity value decreased to 380 × 10 −5 gfcm 2 / piece.
From this result, it is shown that the artificial hair 10 of Example 10 has a bending stiffness value almost equal to the bending stiffness value of natural hair at a humidity of 40%, and the bending stiffness value decreases with increasing humidity. ing. When the humidity exceeds about 60%, the bending stiffness value of the artificial hair 10 is lower than the bending stiffness value of natural hair. However, the artificial hair made of nylon 6 of Comparative Example 1 and nylon MXD6 of Comparative Example 4 described later are used. When compared with the bending stiffness value of the artificial hair made of, it was found that the behavior was similar to that of natural hair.
比較例4の人工毛髪はナイロンMXD6からなり、糸径が80μmであり、湿度40%の条件で曲げ剛性値は940×10-5gfcm2 /本であり、湿度40〜60%付近まで曲げ剛性値が低下し、湿度60%では870×10-5gfcm2 /本までに低下する。さらに、湿度60〜80%までは曲げ剛性値が徐々に低下し、湿度80%では、780×10-5gfcm2 /本まで低下した。比較例4の曲げ剛性値は、測定した全湿度範囲で天然毛髪や実施例6〜10の人工毛髪よりも著しく大きいことが分かった。The artificial hair of Comparative Example 4 is made of nylon MXD6, has a yarn diameter of 80 μm, has a flexural rigidity value of 940 × 10 −5 gfcm 2 / bar under conditions of a humidity of 40%, and has a flexural rigidity of about 40-60%. The value decreases and decreases to 870 × 10 −5 gfcm 2 / line at 60% humidity. Further, the bending stiffness value gradually decreased to a humidity of 60 to 80%, and decreased to 780 × 10 −5 gfcm 2 / pipe at a humidity of 80%. The bending rigidity value of Comparative Example 4 was found to be significantly greater than that of natural hair and the artificial hairs of Examples 6 to 10 over the entire humidity range measured.
比較例5の人工毛髪は、MXDナイロンにナイロン6を10%混合し、糸径が80μmである。湿度40%の条件では、曲げ剛性値は870×10-5gfcm2 /本であり、湿度60%付近まで曲げ剛性値が低下し、湿度60%では720×10-5gfcm2 /本まで低下する。さらに、湿度60〜80%までは曲げ剛性値が徐々に低下し、湿度80%では610×10-5gfcm2 /本まで低下した。比較例5の曲げ剛性値は、測定した全湿度範囲で天然毛髪や実施例6〜10の人工毛髪よりも著しく大きいことが分かった。
なお、図12と同様に比較例1の人工毛髪の曲げ剛性値も合わせて示しているが、測定した全湿度範囲で、天然毛髪や実施例6〜10の人工毛髪よりも著しく小さいことが分かった。The artificial hair of Comparative Example 5 has 10% nylon 6 mixed with MXD nylon and a yarn diameter of 80 μm. When the humidity is 40%, the bending stiffness value is 870 × 10 −5 gfcm 2 / line, and the bending stiffness value decreases to near 60% humidity, and at 60% humidity, it decreases to 720 × 10 −5 gfcm 2 / line. To do. Further, the bending stiffness value gradually decreased to a humidity of 60 to 80%, and decreased to 610 × 10 −5 gfcm 2 / line at a humidity of 80%. The bending stiffness value of Comparative Example 5 was found to be significantly greater than that of natural hair and the artificial hairs of Examples 6-10 in the entire humidity range measured.
In addition, although the bending rigidity value of the artificial hair of the comparative example 1 is also shown similarly to FIG. 12, it turns out that it is remarkably smaller than the natural hair and the artificial hair of Examples 6-10 in the whole humidity range measured. It was.
図12又は図13に示すように、天然毛髪の曲げ剛性値は人工的に作られたものと異なり、個体差が生じやすい。そして、天然毛髪の曲げ剛性値の湿度変化においても、湿度依存性に幅が生じる。天然毛髪の湿度変化による曲げ剛性値は、湿度40%では、最小値が660×10-5gfcm2 /本であり、最大値では740×10-5gfcm2 /本という範囲にあり、この変動幅は80×10-5gfcm2 /本である。湿度が60%の時には、最小値が520×10-5gfcm2 /本であり、最大値が660×10-5gfcm2 /本となり、変動幅は140×10-5gfcm2 /本となり、湿度が40%より大きい変動幅となる。さらに、湿度80%では、変動幅が広がり、最小値が420×10-5gfcm2 /本であり、最大値が600×10-5gfcm2 /本に達する。As shown in FIG. 12 or FIG. 13, the bending rigidity value of natural hair is different from that of artificially made hair, and individual differences are likely to occur. And even in the humidity change of the bending rigidity value of natural hair, a range arises in humidity dependency. The bending stiffness value due to the humidity change of natural hair has a minimum value of 660 × 10 −5 gfcm 2 / bar at a humidity of 40% and a maximum value of 740 × 10 −5 gfcm 2 / bar. The width is 80 × 10 −5 gfcm 2 / book. When the humidity is 60%, the minimum value is 520 × 10 −5 gfcm 2 / line, the maximum value is 660 × 10 −5 gfcm 2 / line, and the fluctuation range is 140 × 10 −5 gfcm 2 / line, Humidity has a fluctuation range greater than 40%. Further, at a humidity of 80%, the fluctuation range widens, the minimum value is 420 × 10 −5 gfcm 2 / line, and the maximum value reaches 600 × 10 −5 gfcm 2 / line.
実施例1〜10の人工毛髪10によれば、鞘をナイロン6又はナイロン66、芯をナイロン6T又はナイロンMXD6とし、その鞘芯容量比を変化させることにより、曲げ剛性値とその湿度依存性が天然毛髪に類似した人工毛髪10が得られる。図12及び図13から明らかなように、芯部1Bにナイロン6T又はナイロンMXD6を用いて、鞘/芯容量比を1/2に近い値で製造した人工毛髪10の曲げ剛性値は天然毛髪の曲げ剛性値の最小値付近になり、鞘/芯容量比を1/7付近で製造した人工毛髪10の曲げ剛性値は、天然毛髪の曲げ剛性値の最大値付近になる。 According to the artificial hair 10 of Examples 1 to 10, the sheath is nylon 6 or nylon 66, the core is nylon 6T or nylon MXD6, and the sheath core capacity ratio is changed, whereby the flexural rigidity value and the humidity dependency thereof are increased. Artificial hair 10 similar to natural hair is obtained. As apparent from FIGS. 12 and 13, the bending rigidity value of the artificial hair 10 manufactured by using nylon 6T or nylon MXD6 for the core portion 1B and a sheath / core capacity ratio close to ½ is that of natural hair. The bending stiffness value of the artificial hair 10 manufactured near the minimum bending stiffness value and the sheath / core volume ratio around 1/7 is around the maximum bending stiffness value of natural hair.
これから、芯部1Bを半芳香族ポリアミド樹脂とし、鞘部1Aを脂肪族ポリアミド樹脂とした鞘/鞘構造の人工毛髪10において、鞘/芯容量比が1/2〜1/7の範囲内にある場合には、天然毛髪の曲げ剛性値の挙動に近似する人工毛髪が得られた。表1及び表2に示すように、鞘/芯容量比が1/2〜1/7の範囲内で製造した人工毛髪10の鞘/芯重量比は10/90〜35/65の範囲となる。
特に、実施例6〜10の鞘をナイロン6、芯をナイロンMXD6とした人工毛髪10の場合には、温度22℃で、湿度が40〜50%における曲げ剛性値は天然毛髪の最大値と最小値の間に入って、その平均値に近い挙動を示す。さらに湿度が50%以上の湿度範囲では、実施例6、7の人工毛髪10の曲げ剛性値は、天然毛髪の曲げ剛性値の最大値における挙動に近い特性となり、実施例8の人工毛髪10の曲げ剛性値は、天然毛髪の曲げ剛性値の平均値における挙動に近い特性となり、実施例9、10の人工毛髪10の曲げ剛性値は、天然毛髪の曲げ剛性値の最小値における挙動に近い特性となる。From this, in the artificial hair 10 having a sheath / sheath structure in which the core portion 1B is a semi-aromatic polyamide resin and the sheath portion 1A is an aliphatic polyamide resin, the sheath / core capacity ratio is within a range of 1/2 to 1/7. In some cases, artificial hair was obtained that approximated the behavior of the bending stiffness value of natural hair. As shown in Table 1 and Table 2, the sheath / core weight ratio of the artificial hair 10 produced within the sheath / core volume ratio of 1/2 to 1/7 is in the range of 10/90 to 35/65. .
In particular, in the case of the artificial hair 10 in which the sheath of Examples 6 to 10 is nylon 6 and the core is nylon MXD6, the bending stiffness value at a temperature of 22 ° C. and a humidity of 40 to 50% is the maximum value and the minimum value of natural hair. Behaves between values and behaves close to the average value. Furthermore, in the humidity range where the humidity is 50% or more, the bending stiffness value of the artificial hair 10 of Examples 6 and 7 becomes a characteristic close to the behavior at the maximum value of the bending stiffness value of natural hair. The bending rigidity value is a characteristic close to the behavior of the average value of the bending rigidity value of natural hair, and the bending rigidity value of the artificial hair 10 of Examples 9 and 10 is a characteristic close to the behavior of the natural hair at the minimum bending rigidity value. It becomes.
次に、実施例の人工毛髪の吸湿による変化について説明する。
図14〜図16は、(A)本発明による実施例の人工毛髪、(B)天然毛髪、(C)従来のポリエステルを用いた人工毛髪の、それぞれ、カールした最初の状態、水に浸漬した状態、及び水に浸漬した後の乾燥状態を示す図である。各毛髪はその上部で結束しており、乾燥は自然乾燥で行った。
図14に示すように、何れの毛髪も同じ長さで、同じカール径でカール付けを行った状態である。水に浸漬すると、実施例の人工毛髪1,10は、水分の吸収により伸び、かつ、その長さの変化も天然毛髪に近い変化を示すことが分かる (図15(A)及び(B)参照)。これに対して、ポリエステルを用いた人工毛髪の場合には、吸湿性に劣るので人工毛髪が伸びないために、カールが崩れず、天然毛髪の挙動とは異なることが分かる(図15(C)参照)。
水に浸漬した後の乾燥させた状態では、実施例の人工毛髪1,10は再びカールさせた最初の状態に戻り、天然毛髪に近い変化を示すことが分かる(図16(A)及び(B)参照)。なお、図示しないが、ポリエステル以外の材料からなる人工毛髪の場合には、例えば、水に濡れるとカールは殆ど伸びてしまう上に、自然放置下で湿気を取り除いても元のカールに戻り難いことが知られている。
これにより、本発明の人工毛髪1,10によれば、カールを付けた状態であっても、水に濡らした時のカールの伸び及び自然放置下で湿気を取り除いた時のカールの戻り具合が、天然毛髪に類似の挙動であることがわかった。Next, the change by moisture absorption of the artificial hair of an Example is demonstrated.
14 to 16 are (A) artificial hair of an embodiment according to the present invention, (B) natural hair, and (C) artificial hair using conventional polyester, respectively, in an initial curled state, immersed in water. It is a figure which shows a state and the dry state after being immersed in water. Each hair was bound at the top, and drying was performed by natural drying.
As shown in FIG. 14, all the hairs are curled with the same length and the same curl diameter. When immersed in water, it can be seen that the artificial hairs 1 and 10 of the example are stretched by the absorption of moisture, and the change in length thereof also shows a change close to that of natural hair (see FIGS. 15A and 15B). ). On the other hand, in the case of artificial hair using polyester, since the artificial hair does not stretch because it is inferior in hygroscopicity, it is understood that the curl does not collapse and is different from the behavior of natural hair (FIG. 15C). reference).
In the dried state after being immersed in water, it can be seen that the artificial hairs 1 and 10 of the examples return to the initial curled state again and show changes similar to natural hair (FIGS. 16A and 16B). )reference). In addition, although not shown, in the case of artificial hair made of materials other than polyester, for example, the curl almost stretches when wet, and it is difficult to return to the original curl even if moisture is removed under natural conditions. It has been known.
As a result, according to the artificial hairs 1 and 10 of the present invention, even when curled, the curl stretches when wet and the curl returns when moisture is removed under natural standing. It was found that the behavior was similar to that of natural hair.
上記実施例1〜10の人工毛髪10によれば、22℃、湿度40%で曲げ剛性値が、天然毛髪の平均値720×10-5gfcm2 /本と一致するか、極めて近い値を示すことが分かった。さらに、湿度80%までの上昇に伴う曲げ剛性値の低下挙動も、天然毛髪に極めて近いことが分かった。さらに、実際に水に濡らした時の人工毛髪10において、カールの伸び及び自然放置下で湿気を取り除いた時のカールの戻り具合が、天然毛髪に類似の挙動であることがわかった。According to the artificial hair 10 of Examples 1 to 10, the bending stiffness value at 22 ° C. and a humidity of 40% is equal to or very close to the average value of natural hair 720 × 10 −5 gfcm 2 / bar. I understood that. Further, it was found that the bending stiffness value decreasing behavior with increasing humidity up to 80% is very close to that of natural hair. Furthermore, in the artificial hair 10 when actually wetted with water, it has been found that the curl stretches and the curl return condition when moisture is removed under natural standing is similar to that of natural hair.
実施例1〜10に示した人工毛髪10と同様にして、直径の異なる人工毛髪10を種々製作し、図5に示すかつらを製作した。直径の異なる人工毛髪を適切に配置し、毛髪の一部をカールさせたデザインで天然毛髪に近い外観を持ち、生え際やかつら装着の境界が不自然に見えないかつらとした。装着者や周囲の観察者の評価によれば、風合い(外観、触感、量感)が極めて自然であり、雨やシャワーに濡れた状態では、図6や図14〜図16に示すように毛髪の伏せ具合、カールの解け具合や外観、触感、量感などの風合いは、装着者自身の天然毛髪と変わらず、髪分かれも生じず極めて快適に装着できた。 Various artificial hairs 10 having different diameters were produced in the same manner as the artificial hair 10 shown in Examples 1 to 10, and wigs shown in FIG. 5 were produced. Artificial hairs with different diameters were appropriately arranged, and the hair was partly curled to give it an appearance close to natural hair, and the hairline and wig wearing boundary were not unnaturally visible. According to the evaluation of the wearer and the surrounding observers, the texture (appearance, tactile sensation, sense of volume) is very natural, and in the state wet with rain or shower, as shown in FIG. 6 and FIGS. The textures such as the degree of lie down, the degree of curling, the appearance, the touch, and the feeling of volume were not different from the wearer's own natural hair, and the hair was not separated and could be worn very comfortably.
上記実施例によれば、本発明によって製造される人工毛髪は、22℃、湿度40%における曲げ剛性値が天然毛髪の平均値720×10-5gfcm2 /本と一致するか、又は、極めて近い値が得られ、かつ、湿度上昇に伴う曲げ剛性値低下挙動も、天然毛髪に極めて近いことが分かった。
これにより、本発明の人工毛髪1又は10を用いて製造したかつら40は、風合い(外観、触感、質感)とも天然毛髪に近く、高湿下、あるいは水に濡れた場合のそれら特性の変化も天然毛髪に近いため、自然な感じで装着できることが判明した。According to the above examples, the artificial hair produced according to the present invention has a bending stiffness value at 22 ° C. and a humidity of 40% which is equal to the average value of natural hair 720 × 10 −5 gfcm 2 / string, or extremely It was found that close values were obtained, and that the bending stiffness value decreasing behavior with increasing humidity was very close to that of natural hair.
As a result, the wig 40 manufactured using the artificial hair 1 or 10 of the present invention is close to natural hair in texture (appearance, touch, texture), and changes in these characteristics when wet or wet. Since it is close to natural hair, it was found that it can be worn with a natural feeling.
本発明は、上記実施例に限定されることなく、特許請求の範囲に記載した発明の範囲内で種々の変形が可能であり、それらも本発明の範囲内に含まれることはいうまでもない。例えば、ポリアミド樹脂は、所望の曲げ剛性値などが得られるように適宜選択すればよいことは勿論である。
The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these are also included in the scope of the present invention. . For example, it is needless to say that the polyamide resin may be appropriately selected so as to obtain a desired bending rigidity value.
Claims (8)
上記芯部が半芳香族ポリアミド樹脂からなり、上記鞘部が上記芯部よりも曲げ剛性の低い直鎖飽和脂肪族ポリアミド樹脂からなる人工毛髪であって、
前記半芳香族ポリアミド樹脂が、ヘキサメチレンジアミンとテレフタール酸との交互共重合体、又は、メタキシリレンジアミンとアジピン酸との交互共重合体であり、
前記直鎖飽和脂肪族ポリアミド樹脂が、カプロラクタム開環重合体、及び/又は、ヘキサメチレンジアミンとアジピン酸との交互共重合体であり、
前記鞘部及び芯部の鞘/芯重量比が、10/90〜35/65であり、そして
前記鞘部及び芯部の鞘/芯容量比が、1/7〜1/2である、人工毛髪。Having a sheath / core structure comprising a core part and a sheath part covering the core part;
The core part is made of a semi-aromatic polyamide resin, and the sheath part is artificial hair made of a linear saturated aliphatic polyamide resin having a lower bending rigidity than the core part,
The semi-aromatic polyamide resin is an alternating copolymer of hexamethylenediamine and terephthalic acid, or an alternating copolymer of metaxylylenediamine and adipic acid,
The linear saturated aliphatic polyamide resin is a caprolactam ring-opening polymer and / or an alternating copolymer of hexamethylenediamine and adipic acid,
The sheath / core weight ratio of the sheath and core is 10/90 to 35/65, and the sheath / core capacity ratio of the sheath and core is 1/7 to 1/2. hair.
上記人工毛髪が、芯部と該芯部を覆う鞘部とからなる鞘/芯構造を有し、
上記芯部が半芳香族ポリアミド樹脂からなり、上記鞘部が上記芯部よりも曲げ剛性の低い直鎖飽和脂肪族ポリアミド樹脂からなるかつらであって、
前記半芳香族ポリアミド樹脂が、ヘキサメチレンジアミンとテレフタール酸との交互共重合体、又は、メタキシリレンジアミンとアジピン酸との交互共重合体であり、
前記直鎖飽和脂肪族ポリアミド樹脂が、カプロラクタム開環重合体、及び/又は、ヘキサメチレンジアミンとアジピン酸との交互共重合体であり、
前記鞘部及び芯部の鞘/芯重量比が、10/90〜35/65であり、そして
前記鞘部及び芯部の鞘/芯容量比が、1/7〜1/2である、かつら。A wig including a wig base and artificial hair implanted in the wig base,
The artificial hair has a sheath / core structure composed of a core part and a sheath part covering the core part,
The core part is made of a semi-aromatic polyamide resin, and the sheath part is a wig made of a linear saturated aliphatic polyamide resin having a lower bending rigidity than the core part,
The semi-aromatic polyamide resin is an alternating copolymer of hexamethylenediamine and terephthalic acid, or an alternating copolymer of metaxylylenediamine and adipic acid,
The linear saturated aliphatic polyamide resin is a caprolactam ring-opening polymer and / or an alternating copolymer of hexamethylenediamine and adipic acid,
The sheath / core weight ratio of the sheath part and the core part is 10/90 to 35/65, and the sheath / core capacity ratio of the sheath part and the core part is 1/7 to 1/2. .
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