JP2008144095A - Resin composition, and fiber composed of the same - Google Patents
Resin composition, and fiber composed of the same Download PDFInfo
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Abstract
Description
本発明は、熱収縮性に優れた繊維に関するものである。 The present invention relates to a fiber excellent in heat shrinkability.
従来、塩化ビニル系樹脂は、耐候性、透明性、難燃性、耐薬品性に優れ、安価であることから典型的な汎用プラスチックとして、様々な用途に利用されている。その塩化ビニル系樹脂を溶融紡糸した繊維は、強度、伸度、感触等が天然毛髪に近いことから、例えば、ウィッグ、ヘアーピース、ブレード、エクステンションヘアー等の頭髪装飾用の人工毛髪用繊維として多く使用されている。しかし、更に天然毛髪に近づけるために様々な繊維二次加工が施され、この二次加工の結果としてウィッグ等の加工工程において、必要以上に熱収縮してしまう場合があった。これを解決する手段として、塩化ビニル樹脂と塩素化塩化ビニル樹脂からなる塩化ビニル系繊維（例えば、特許文献１を参照。）が提案されているが、この方法では多量の塩素化塩化ビニル樹脂を添加することが困難であり、十分な効果を得られない場合があった。 Conventionally, a vinyl chloride resin has been used in various applications as a typical general-purpose plastic because it is excellent in weather resistance, transparency, flame retardancy and chemical resistance and is inexpensive. The fiber obtained by melt spinning the vinyl chloride resin is close to natural hair in strength, elongation, touch, etc., so it is often used as artificial hair fiber for hair decoration such as wigs, hairpieces, blades, and extension hairs. in use. However, various fiber secondary processing is performed in order to make it closer to natural hair, and as a result of this secondary processing, heat shrinkage may occur more than necessary in processing steps such as wigs. As means for solving this, a vinyl chloride fiber composed of a vinyl chloride resin and a chlorinated vinyl chloride resin (see, for example, Patent Document 1) has been proposed. In this method, a large amount of chlorinated vinyl chloride resin is used. It was difficult to add, and sufficient effects could not be obtained.
更に、特定の塩素化塩化ビニル樹脂を２種類添加した塩化ビニル系繊維（例えば、特許文献２参照。）が提案されている。この手段により塩素化塩化ビニル樹脂の添加量を増加させることができ、１００℃程度での熱収縮を抑えることは可能となった。しかし近年、ウィッグ等のスタイルの多様化、高度化によって、より高温での加工処理が要求され、これらの手段では対応が困難であり加工特性に劣る場合があった。
本発明の樹脂組成物を用いることにより、熱収縮性、透明性及び光沢など特性をバランスよく兼ね備えた繊維を提供することを目的とする。 By using the resin composition of this invention, it aims at providing the fiber which has characteristics, such as heat-shrinkability, transparency, and glossiness, in good balance.
本発明は、以下の要旨を有する。 The present invention has the following gist.
（１）塩化ビニル系樹脂と、ポリエステル系樹脂と、アクリル系重合体と、を含有する樹脂組成物。
（２）含有率が、塩化ビニル系樹脂が２５〜９８質量％、ポリエステル系樹脂が１〜５０質量％、及びアクリル系重合体が１〜６０質量％である前記（１）に記載の樹脂組成物。
（３）含有率が、塩化ビニル系樹脂が３５〜９０質量％、ポリエステル系樹脂が５〜３５質量％、及びアクリル系重合体が５〜６０質量％である前記（１）に記載の樹脂組成物。
（４）ポリエステル系樹脂が、ポリ乳酸系樹脂である前記（１）〜（３）のいずれかに記載の樹脂組成物。
（５）アクリル系重合体が、メチルメタアクリレート樹脂である前記（１）〜（４）のいずれかに記載の樹脂組成物。
（６）前記（１）〜（５）のいずれかに記載の樹脂組成物を溶融紡糸した繊維。
（７）前記（６）に記載の繊維からなる人工毛髪用繊維。
（８）前記（７）に記載の人工毛髪用繊維からなる頭髪装飾繊維。
(1) A resin composition containing a vinyl chloride resin, a polyester resin, and an acrylic polymer.
(2) Resin composition as described in said (1) whose content rate is 25-98 mass% of vinyl chloride-type resins, 1-50 mass% of polyester-type resins, and 1-60 mass% of acrylic polymers. object.
(3) Resin composition as described in said (1) whose content rate is 35-90 mass% of vinyl chloride-type resins, 5-35 mass% of polyester-type resins, and 5-60 mass% of acrylic polymers. object.
(4) The resin composition according to any one of (1) to (3), wherein the polyester resin is a polylactic acid resin.
(5) The resin composition according to any one of (1) to (4), wherein the acrylic polymer is a methyl methacrylate resin.
(6) A fiber obtained by melt spinning the resin composition according to any one of (1) to (5).
(7) A fiber for artificial hair comprising the fiber according to (6).
(8) A hair decoration fiber comprising the artificial hair fiber according to (7).
本発明の樹脂組成物を用いることにより、熱収縮性、透明性及び光沢など特性をバランスよく兼ね備えた繊維を得ることができる。 By using the resin composition of the present invention, it is possible to obtain a fiber having a good balance of properties such as heat shrinkability, transparency and gloss.
本発明の樹脂組成物は、塩化ビニル系樹脂と、ポリエステル系樹脂と、アクリル系重合体と、を含有しているものが好ましい。 The resin composition of the present invention preferably contains a vinyl chloride resin, a polyester resin, and an acrylic polymer.
本発明の樹脂組成物に用いることができる塩化ビニル系樹脂は、塊状重合、溶液重合、懸濁重合、乳化重合等の手段によって得られたものであるが、成形物の初期着色性等を勘案すると、好ましくは懸濁重合によって製造したものである。本発明における塩化ビニル系樹脂は、好ましくは、従来公知の塩化ビニル単独重合物であるホモポリマー樹脂、又は、従来公知の各種のコポリマー樹脂であるが、本発明の目的に反しない限り、これら以外の塩化ビニル系樹脂であってもかまわない。前記コポリマー樹脂としては、従来公知のコポリマー樹脂を使用することができるが、好ましくは、塩化ビニル−酢酸ビニルコポリマー樹脂、塩化ビニル−プロピオン酸ビニルコポリマー樹脂等の塩化ビニルとビニルエステル類とのコポリマー樹脂、塩化ビニル−アクリル酸ブチルコポリマー樹脂、塩化ビニル−アクリル酸２エチルヘキシルコポリマー樹脂等の塩化ビニルとアクリル酸エステル類とのコポリマー樹脂、塩化ビニル−エチレンコポリマー樹脂、塩化ビニル−プロピレンコポリマー樹脂等の塩化ビニルとオレフィン類とのコポリマー樹脂、及び、塩化ビニル−アクリロニトリルコポリマー樹脂であり、さらに好ましくは、塩化ビニルの単独重合物であるホモポリマー樹脂、塩化ビニル−エチレンコポリマー樹脂、塩化ビニル−酢酸ビニルコポリマー樹脂等のコポリマー樹脂である。前記コポリマー樹脂においては、コモノマーの含有量は、特に限定されず、成型加工性等の要求品質に応じて決めることができる。 The vinyl chloride resin that can be used in the resin composition of the present invention is obtained by means of bulk polymerization, solution polymerization, suspension polymerization, emulsion polymerization, etc., taking into consideration the initial colorability of the molded product, etc. Then, it is preferably produced by suspension polymerization. The vinyl chloride resin in the present invention is preferably a homopolymer resin which is a conventionally known vinyl chloride homopolymer, or various conventionally known copolymer resins, but other than these unless it is contrary to the object of the present invention. The vinyl chloride resin may be used. As the copolymer resin, a conventionally known copolymer resin can be used. Preferably, a copolymer resin of vinyl chloride and vinyl esters such as vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl propionate copolymer resin or the like is used. , Vinyl chloride-butyl acrylate copolymer resin, vinyl chloride-2-ethylhexyl acrylate copolymer resin, etc., vinyl chloride and acrylate esters, vinyl chloride-ethylene copolymer resin, vinyl chloride-propylene copolymer resin, etc. Copolymer of olefins and vinyl chloride-acrylonitrile copolymer resin, more preferably homopolymer resin, vinyl chloride-ethylene copolymer resin, vinyl chloride-vinegar, which is a homopolymer of vinyl chloride A copolymer resin of vinyl copolymer resin. In the copolymer resin, the content of the comonomer is not particularly limited, and can be determined according to the required quality such as moldability.
塩化ビニル系樹脂の粘度平均重合度は、好ましくは６００〜２５００である。塩化ビニル系樹脂の粘度平均重合度が６００未満であると、塩化ビニル系樹脂の溶融粘度が低下するので得られる繊維は熱収縮しやすく恐れがある。一方、粘度平均重合度が２５００を超えると、溶融粘度が高くなるので、ノズル圧力が高くなり、そのために、安全な紡糸が困難になる恐れがある。前記粘度平均重合度は、樹脂２００ｍｇをニトロベンゼン５０ｍｌに溶解させ、このポリマー溶液の比粘度を３０℃恒温槽中において、ウベローデ型粘度計を用いて測定し、ＪＩＳ―Ｋ６７２０−２により算出したものである。 The viscosity average polymerization degree of the vinyl chloride resin is preferably 600 to 2500. When the viscosity average polymerization degree of the vinyl chloride resin is less than 600, the melt viscosity of the vinyl chloride resin is lowered, and thus the obtained fiber may be easily thermally contracted. On the other hand, when the viscosity average polymerization degree exceeds 2500, the melt viscosity becomes high, so that the nozzle pressure becomes high, which may make safe spinning difficult. The viscosity average degree of polymerization is obtained by dissolving 200 mg of resin in 50 ml of nitrobenzene, measuring the specific viscosity of this polymer solution in a constant temperature bath at 30 ° C. using an Ubbelohde viscometer, and calculating according to JIS-K6720-2. is there.
本発明の樹脂組成物における塩化ビニル系樹脂の含有率は、２５〜９８質量％、好ましくは３０〜９５質量％、特に好ましくは３５〜９０質量％である。塩化ビニル系樹脂が２５質量％未満であると、本発明の樹脂組成物から得られる繊維の光沢が劣る場合がある。一方、塩化ビニル系樹脂が９８質量％を超えると、得られる繊維の耐熱性が劣る場合がある。 The content of the vinyl chloride resin in the resin composition of the present invention is 25 to 98% by mass, preferably 30 to 95% by mass, and particularly preferably 35 to 90% by mass. When the vinyl chloride resin is less than 25% by mass, the gloss of the fiber obtained from the resin composition of the present invention may be inferior. On the other hand, if the vinyl chloride resin exceeds 98% by mass, the heat resistance of the resulting fiber may be inferior.
本発明の樹脂組成物に用いることができるポリエステル系樹脂は、特に限定されるものではないが、融点が、好ましくは１００〜３００℃、特に好ましくは１２０〜２５０℃、最も好ましくは１３０〜２００℃である、結晶性を有するものを使用するのが望ましい。ポリエステル系樹脂の融点が、１００℃未満であると、本発明の樹脂組成物の耐熱性が劣る場合がある。一方、融点が、３００℃を超えると塩化ビニル系樹脂との混合が難しくなる場合がある。融点とは、示差走査型熱量計（ＤＳＣ）を用いて、試料約５ｍｇを窒素中、昇温速度１０℃／分で昇温させた時の融解熱量のピークとなる温度を測定し、ＪＩＳＫ−７１２１により算出したものである。ここで、本発明にかかる融点は、通常ポリエステル系樹脂の融点に起因し、ポリエステル系樹脂単独の融点に依存するのが一般的だが、塩ビ系樹脂との相乗効果で融点が変化する場合もある。このような場合、本発明は塩化ビニル系樹脂とポリエステル系樹脂の複合化によって得られる樹脂組成物に関するものであり、該樹脂組成物を測定したときの融点が優先される。 The polyester resin that can be used in the resin composition of the present invention is not particularly limited, but the melting point is preferably 100 to 300 ° C, particularly preferably 120 to 250 ° C, and most preferably 130 to 200 ° C. It is desirable to use those having crystallinity. When the melting point of the polyester resin is less than 100 ° C., the heat resistance of the resin composition of the present invention may be inferior. On the other hand, when the melting point exceeds 300 ° C., mixing with the vinyl chloride resin may be difficult. Melting point refers to the temperature at which the peak of the heat of fusion is measured when a sample is heated at a heating rate of 10 ° C./min in nitrogen using a differential scanning calorimeter (DSC). 7121. Here, the melting point according to the present invention is usually caused by the melting point of the polyester resin and generally depends on the melting point of the polyester resin alone, but the melting point may change due to a synergistic effect with the vinyl chloride resin. . In such a case, the present invention relates to a resin composition obtained by combining a vinyl chloride resin and a polyester resin, and priority is given to the melting point when the resin composition is measured.
ポリエステル系樹脂としては、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート等の芳香族ポリエステル系樹脂やポリ乳酸、ポリヒドロキシ酪酸、ポリカプロラクトン、ポリブチレンサクシネート、ポリブチレンアジペート、ポリエチレンサクシネート、ポリグリコール酸、ポリ−３−ヒドロキシプロピオネート、ポリ−３−ヒドロキシブチレート等の脂肪族ポリエステル樹脂等が含まれる。また、これらの共重合体も含まれ、更に、これらを他の樹脂との共重合体やブロック、グラフト重合体も排除されない。これらの中で、特に限定されないが、塩化ビニル系樹脂との混合性の点で、脂肪族ポリエステル樹脂が好ましく、特にポリ乳酸系樹脂が好ましい。 Polyester resins include aromatic polyester resins such as polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, and polylactic acid, polyhydroxybutyric acid, polycaprolactone, polybutylene succinate, polybutylene adipate, polyethylene succinate. Nate, polyglycolic acid, poly-3-hydroxypropionate, poly-3-hydroxybutyrate, and other aliphatic polyester resins. In addition, these copolymers are also included, and further, copolymers, blocks, and graft polymers with other resins are not excluded. Among these, although not particularly limited, aliphatic polyester resins are preferable, and polylactic acid resins are particularly preferable in terms of miscibility with vinyl chloride resins.
ポリ乳酸系樹脂としては、特に制限されるものではないが、光学純度が低いと結晶性が低下し、特に融点が低下することが知られている。このため、Ｌ体が７０％以上、好ましくは８０％以上、特に好ましくは９０％含まれるものが使用するのが望ましい。ポリ乳酸系樹脂の分子量は、ゲルパーミエーションクロマトグラフィー（ＧＰＣ）により測定した標準ポリスチレン換算法による重量平均分子量が１万〜１００万、好ましくは２万〜７５万、特に好ましくは３万〜５０万である。重量平均分子量が小さければ、得られる繊維の耐熱性向上の効果が乏しく、大きければ塩化ビニル系樹脂との混合が困難になる場合がある。 Although it does not restrict | limit especially as a polylactic acid-type resin, When optical purity is low, crystallinity will fall and it is known that melting | fusing point will fall especially. For this reason, it is desirable to use those containing L-form of 70% or more, preferably 80% or more, particularly preferably 90%. The molecular weight of the polylactic acid-based resin is 10,000 to 1,000,000, preferably 20,000 to 750,000, particularly preferably 30,000 to 500,000, based on a standard polystyrene conversion method measured by gel permeation chromatography (GPC). It is. If the weight average molecular weight is small, the effect of improving the heat resistance of the resulting fiber is poor, and if it is large, mixing with the vinyl chloride resin may be difficult.
本発明の樹脂組成物におけるポリエステル系樹脂の含有率は、１〜５０質量％、好ましくは２〜４０質量％、特に好ましくは５〜３５質量％である。ポリエステル系樹脂が１質量％未満であると、本発明の樹脂組成物から得られる繊維の耐熱性が劣る場合がある。一方、ポリエステル系樹脂が５０質量％を超えると、得られる繊維の光沢が劣る場合がある。 The content rate of the polyester-type resin in the resin composition of this invention is 1-50 mass%, Preferably it is 2-40 mass%, Most preferably, it is 5-35 mass%. If the polyester resin is less than 1% by mass, the heat resistance of the fiber obtained from the resin composition of the present invention may be inferior. On the other hand, if the polyester resin exceeds 50% by mass, the gloss of the resulting fiber may be inferior.
本発明の樹脂組成物に用いることができるアクリル系重合体は、メチルアクリレート、エチルアクリレート、ｎ−プロピルアクリレート、ｉ−プロピルアクリレート、ｎ−ブチルアクリレート、ｔ−ブチルアクリレート、メチルメタアクリレート、エチルメタアクリレート、ｎ−プロピルメタアクリレート、ｎ−ブチルメタアクリレート、ｔ−ブチルメタアクリレート等が含まれる。また、これらの共重合体も含まれ、更に、これらを他の樹脂との共重合体やブロック、グラフト重合体も排除されない。これらの中で、特に限定されないが、塩化ビニル系樹脂、ポリエステル系樹脂との混合性の点で、特にメチルメタアクリレートが好ましい。 The acrylic polymer that can be used in the resin composition of the present invention is methyl acrylate, ethyl acrylate, n-propyl acrylate, i-propyl acrylate, n-butyl acrylate, t-butyl acrylate, methyl methacrylate, ethyl methacrylate. , N-propyl methacrylate, n-butyl methacrylate, t-butyl methacrylate and the like. In addition, these copolymers are also included, and further, copolymers, blocks, and graft polymers with other resins are not excluded. Among these, although not particularly limited, methyl methacrylate is particularly preferable in terms of miscibility with a vinyl chloride resin and a polyester resin.
アクリル系重合体は、アクリル酸アルキルエステル、もしくはメタアクリル酸アルキルエステル等のモノマーをラジカル開始剤の存在下にラジカル重合することにより得られるが、重合方法はこれに限られるものではなく、一般的に知られている公知の種々の重合方法を用いて重合することができる。 The acrylic polymer can be obtained by radical polymerization of a monomer such as an alkyl acrylate ester or an alkyl methacrylate ester in the presence of a radical initiator, but the polymerization method is not limited to this. The polymerization can be carried out using various known polymerization methods known in the art.
本発明の樹脂組成物におけるアクリル系重合体の含有率は、１〜６０質量％、好ましくは２〜６０質量％、特に好ましくは５〜６０質量％である。アクリル系重合体が１質量部未満であると、本発明の樹脂組成物から得られる繊維の透明性が劣る場合がある。一方、アクリル系重合体が６０質量％を超えると、得られる繊維の紡糸性が劣る場合がある。 The content of the acrylic polymer in the resin composition of the present invention is 1 to 60% by mass, preferably 2 to 60% by mass, and particularly preferably 5 to 60% by mass. When the acrylic polymer is less than 1 part by mass, the transparency of the fiber obtained from the resin composition of the present invention may be inferior. On the other hand, if the acrylic polymer exceeds 60% by mass, the spinnability of the resulting fiber may be inferior.
本発明における塩化ビニル系樹脂、ポリエステル系樹脂、アクリル系重合体を含む樹脂組成物は、従来公知の混合機、例えば、ヘンシェルミキサー、スーパーミキサー、リボンブレンダー等を混合してなるパウダーコンパウンド、又は、これを溶融混合してなるペレットコンパウンドとして使用することができる。パウダーコンパウンドは、従来公知の通常の条件で製造できる。ホットブレンドでもコールドブレンドでもよいが、特に好ましくは、樹脂組成物中の揮発分を減少させるために、ブレンド時のカット温度を１０５〜１５５℃迄上げてなるホットブレンドを使用するのが好ましい。ペレットコンパウンドは、通常の塩化ビニル系ペレットコンパウンドの製造と同様にして製造できる。例えば、単軸押出機、異方向２軸押出機、コニカル２軸押出機、同方向２軸押出機、コニーダー、プラネタリーギアー押出機、ロール混練り機等の混練り機を使用して、ペレットコンパウンドとすることができる。ペレットコンパウンドを製造する際の条件は、特に限定はされないが、樹脂温度を１８５℃以下になる様に設定することが望ましい。 The resin composition containing the vinyl chloride resin, polyester resin, and acrylic polymer in the present invention is a powder compound formed by mixing a conventionally known mixer, for example, a Henschel mixer, a super mixer, a ribbon blender, or the like. This can be used as a pellet compound obtained by melt mixing. The powder compound can be produced under conventionally known normal conditions. Although it may be a hot blend or a cold blend, it is particularly preferable to use a hot blend in which the cut temperature during blending is raised to 105 to 155 ° C. in order to reduce the volatile content in the resin composition. The pellet compound can be produced in the same manner as in the production of a normal vinyl chloride-based pellet compound. For example, pellets using a kneader such as a single screw extruder, a different direction twin screw extruder, a conical twin screw extruder, a same direction twin screw extruder, a kneader, a planetary gear extruder, a roll kneader, etc. It can be a compound. The conditions for producing the pellet compound are not particularly limited, but it is desirable to set the resin temperature to be 185 ° C. or lower.
本発明において、混合された塩化ビニル系樹脂、ポリエステル系樹脂、アクリル系重合体を含む樹脂組成物を繊維状の未延伸糸にする際には、従来公知の押出機を使用できる。例えば、単軸押出機、異方向２軸押出機、コニカル２軸押出機などを使用できるが、特に口径が３５〜８５ｍｍ程度の単軸押出機、又は口径が３５〜５０ｍｍ程度のコニカル２軸押出機を使用することが好ましい。押出機の口径が過大になると、押出量が多くなったり、ノズル圧力が過大になり、未延伸糸の流出速度が速くなりすぎて巻き取りが困難になる場合があるので好ましくない。 In the present invention, when a resin composition containing a mixed vinyl chloride resin, polyester resin, and acrylic polymer is made into a fibrous undrawn yarn, a conventionally known extruder can be used. For example, a single screw extruder, a different-direction twin screw extruder, a conical twin screw extruder, etc. can be used. In particular, a single screw extruder having a diameter of about 35 to 85 mm, or a conical twin screw extrusion having a diameter of about 35 to 50 mm. It is preferable to use a machine. If the diameter of the extruder is excessive, the amount of extrusion increases, the nozzle pressure becomes excessive, and the outflow speed of the undrawn yarn becomes too fast, which may be difficult to wind.
本発明の樹脂組成物は、従来公知の紡糸法によって繊維とされる。紡糸法は特に限定されないが、溶融紡糸法が好ましい。例えば、人工毛髪用としてのカール特性等の品質面を勘案すれば、１ケのノズル孔の断面積が０．０１〜１ｍｍ２、好ましくは０．０４〜０．５ｍｍ２のノズルをダイ（紡糸金型）の先端部に溶融紡糸を行うのが好ましい。１ケのノズル孔の断面積が１ｍｍ２を超えると、細繊度の未延伸糸、又は延熱糸とするために、過大な張力をかける必要があり、これにより残留歪みが増加し、カール保持製等の品質が低下するおそれがある。 The resin composition of the present invention is made into fibers by a conventionally known spinning method. The spinning method is not particularly limited, but the melt spinning method is preferable. For example, considering quality aspects such as curling characteristics for artificial hair, a nozzle having a nozzle hole having a cross-sectional area of 0.01 to 1 mm 2 , preferably 0.04 to 0.5 mm 2 is formed by a die (spinning). It is preferable to perform melt spinning at the tip of the mold. When the cross-sectional area of one nozzle hole exceeds 1 mm 2 , it is necessary to apply excessive tension in order to obtain an unstretched yarn or a heated yarn with a fineness, which increases residual strain and maintains curl. There is a risk that the quality of the product will be lowered.
本発明においては、１ケのノズル孔の断面積が１ｍｍ２以下の複数のノズル孔をダイに配列してなるマルチタイプのノズル孔（ノズル孔数は、５０〜３００個。ノズル配列数は１〜５列。）からストランドを流出せしめて、単繊度が３００デシテックス以下の未延伸糸を製造することが好ましい。具体的には樹脂組成物のペレットコンパウンド等を、例えば、単軸押出機を使用して樹脂温度１６０〜２００℃、より好ましくは１６５〜１９０℃で溶融紡糸することによって未延伸糸を得ることができる。 In the present invention, 1 pc nozzle hole multi-type nozzle hole sectional area formed by arranging a plurality of nozzle holes of 1 mm 2 or less in the die (nozzle hole number is 50 to 300 pieces. Nozzle arrangement number 1 It is preferable to produce an unstretched yarn having a single fineness of 300 dtex or less by allowing the strands to flow out from the fifth row. Specifically, an undrawn yarn can be obtained by melt spinning a pellet compound of the resin composition at a resin temperature of 160 to 200 ° C., more preferably 165 to 190 ° C., using a single screw extruder, for example. it can.
前記溶融紡糸で得られた未延伸糸に公知の方法で延伸処理および熱処理を施して、単繊度が３００デシテックス以下の細繊度の繊維（延伸糸）とすることができる。延伸処理条件としては延伸処理温度３０〜１５０℃の雰囲気下で、２〜２０倍まで延伸した後、この延伸した繊維を８０〜２００℃の温度に保持した空気雰囲気下で弛緩処理することが好ましい。 The undrawn yarn obtained by melt spinning can be subjected to drawing treatment and heat treatment by a known method to obtain a fine fiber (drawn yarn) having a single fineness of 300 dtex or less. As stretching conditions, it is preferable to stretch the stretched fiber in an air atmosphere in which the stretched fiber is maintained at a temperature of 80 to 200 ° C. after stretching to 2 to 20 times in an atmosphere at a stretching temperature of 30 to 150 ° C. .
未延伸糸に延伸処理および熱処理をした繊維は、その一本の単繊度が、１〜２００デシテックス、好ましくは５〜１５０デシテックス、特に好ましくは１０〜１００デシテックスである。ここで、繊維が細くても、太くても天然品から乖離することになり、自然感が損なわれる。デシテックスとは、長さ１００ｃｍの繊維２０本の重量を測定し、この1本当たりの平均重量（グラム）を１万倍した数値である。本発明においては特に限定しないが、単繊度が均一である必要は無く、場合によっては、単繊度が異なる複数の繊維を混合して使用することも可能である。 A fiber obtained by subjecting undrawn yarn to drawing treatment and heat treatment has a single fineness of 1 to 200 dtex, preferably 5 to 150 dtex, and particularly preferably 10 to 100 dtex. Here, even if the fiber is thin or thick, it will deviate from the natural product, and the natural feeling is impaired. The decitex is a numerical value obtained by measuring the weight of 20 fibers having a length of 100 cm and multiplying the average weight (gram) per fiber by 10,000. Although it does not specifically limit in this invention, it is not necessary for a single fineness to be uniform, and it is also possible to mix and use the some fiber from which single fineness differs depending on the case.
本発明における樹脂組成物は、塩化ビニル系樹脂、ポリエステル系樹脂、アクリル系重合体以外に、目的に応じて従来公知の添加剤を配合してもよい。添加剤の例としては、滑剤、熱安定剤、加工助剤、強化剤、紫外線吸収剤、酸化防止剤、帯電防止剤、充填剤、難燃剤、顔料、初期着色改善剤、導電性付与剤、表面処理剤、光安定剤、香料等がある。 The resin composition in the present invention may contain conventionally known additives in addition to the vinyl chloride resin, the polyester resin, and the acrylic polymer depending on the purpose. Examples of additives include lubricants, heat stabilizers, processing aids, reinforcing agents, UV absorbers, antioxidants, antistatic agents, fillers, flame retardants, pigments, initial color improvers, conductivity imparting agents, There are surface treatment agents, light stabilizers, fragrances and the like.
以下に、を参照しつつ、実施例、比較例を挙げて本発明をより詳細に説明する。これらはいずれも例示的なものであって、本発明の内容を限定するものではない。表１，２の配合数値は、質量％である。 Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. These are all illustrative and do not limit the contents of the present invention. The blending values in Tables 1 and 2 are mass%.
表１、２において「紡糸性」とは、樹脂組成物を溶融紡糸する際の成形性を表したものである。紡糸性の試験にあっては、紡糸金型から同時に１２０本の繊維を押出成形した際の、糸切れ発生回数（溶融押出中に、数本の繊維状体が途切れる現象：測定時間は３０分間、測定回数は３回）を測定したものである。 In Tables 1 and 2, “spinnability” represents moldability when melt spinning the resin composition. In the spinnability test, the number of occurrences of yarn breakage when 120 fibers were simultaneously extruded from a spinning mold (a phenomenon in which several fibrous bodies were interrupted during melt extrusion: the measurement time was 30 minutes. The number of times of measurement is 3 times).
表１、２において「熱収縮率」とは、試験体を熱処理した際に発生する熱収縮率を表したものである。具体的には、長さ１００ｍｍに調整した繊維の試験体１２本を、１３０℃のギアオーブン中で１５分間放置し、放置前後における試験体の長さの比（（放置前の長さ−放置後の長さ）／放置前の長さ）×１００を算出したもので、１２本のうち、最大値、最小値を排除した１０本の平均値であり、次の評価基準
優良：熱収縮率が０〜３％のもの
良 ：熱収縮率が４〜７％のもの
可 ：熱収縮率が８〜１０％のもの
不良：熱収縮率が１１％以上のもの
で評価した。
In Tables 1 and 2, “thermal shrinkage” represents the thermal shrinkage that occurs when the specimen is heat-treated. Specifically, twelve test pieces of fiber adjusted to a length of 100 mm are left in a gear oven at 130 ° C. for 15 minutes, and the ratio of the lengths of the test pieces before and after being left ((length before being left−left to stand) (Length after) / length before standing) × 100, and is an average value of 10 out of 12 with the maximum value and minimum value excluded, and the following evaluation criteria Excellent: heat shrinkage rate Of 0 to 3% Good: Thermal contraction rate of 4-7% Possible: Thermal contraction rate of 8-10% Poor: Evaluated with thermal contraction rate of 11% or more.
表１、２において「光沢」とは、繊維２４０００本を束ねて、直射日光の当たる室内と蛍光灯下における目視判定し、次の評価基準
優良：平滑感があって、光沢が少ないもの
良 ：平滑感が少ないが、光沢が少ないもの
可 ：凹凸感があって光沢が少ない、または平滑で光沢が少しあるもの
不良：凹凸が大きい、または光沢が強いもの
で評価した。
In Tables 1 and 2, “gloss” means that 24,000 fibers are bundled and visually judged in a room exposed to direct sunlight and under a fluorescent light. The following evaluation criteria: Excellent: smooth and less glossy Good: Less smooth, but less glossy Possible: Uneven and less glossy, or smooth and slightly glossy Poor: Evaluated with large unevenness or strong gloss.
表１、２において「透明性」とは、着色した繊維２４０００本を束ねて、直射日光の当たる室内と蛍光灯下における目視判定し、次の評価基準
優良：透明感があり、発色性がよいもの
良 ：透明感があるが、ややくすんだ色のもの
可 ：全体的に白いが、発色性があるもの
不良：透明感がなく、全体的に白く、くすんだ色のもの
で評価した。
In Tables 1 and 2, “transparency” means that 24,000 colored fibers are bundled and visually judged in a room exposed to direct sunlight and under a fluorescent lamp. The following evaluation criteria: Excellent: transparent and good color development Good Good: Translucent but slightly dull color Possible: Overall white, color developable Defect: No clearness, generally white and dull color.
表１、２において「総合評価」とは、次の評価基準
優良：熱収縮率が良以上で、透明性と光沢が共に優良のもの
良 ：熱収縮率が良以上で、透明性と光沢が共に良、若しくは透明性と光沢のどちらかが１つが優良のもの
可 ：熱収縮率、透明性、及び光沢の１つでも可のもの
不良：熱収縮率、透明性、及び光沢の１つでも不良のもの
で評価した。
In Tables 1 and 2, “Comprehensive evaluation” refers to the following evaluation criteria: Excellent: heat shrinkage rate is good or better and both transparency and gloss are good. Good: heat shrinkage rate is good and good, and transparency and gloss are good. Both are good, or one of transparency and gloss is excellent Yes: One of heat shrinkage, transparency, and gloss is acceptable Bad: One of heat shrinkage, transparency, and gloss It was evaluated with a bad one.
（実施例１）
（ａ）塩化ビニル系樹脂（大洋塩ビ社製 ＴＨ−１０００：重合度１０００）７４質量％と、ポリエステル系樹脂としてポリ乳酸樹脂（ユニチカ社製 テラマックＴＥ−４０００：融点１７０℃、Ｌ体比率９８．２〜９８．５％）１３質量％、アクリル系重合体としてメチルメタアクリレート（クラレ社製 パラペットＧ）１３質量％、ハイドロタルサイト系複合熱安定剤（日産化学工業社製 ＣＰ−４１０Ａ）１質量部、エステル系滑剤（理研ビタミン社製 ＥＷ−１００）０．７５質量部を含有する樹脂組成物を、リボンブレンダーで１００℃まで攪拌昇温させて混合する工程、（ｂ）前記混合した樹脂組成物を、繭型ノズル形状、ノズル孔断面積０．０５ｍｍ２、及びノズル孔数１８０の紡糸金型を用いて、金型温度１９０℃及び押出し量１５ｋｇ／時間で、４０ｍｍ単軸押出機で溶融紡糸して、平均繊度１５０デシテックスの未延伸糸を得る工程、（ｃ）前記溶融紡糸した繊維を１０５℃の空気雰囲気下で３００％に延伸する工程、そして（ｄ）前記延伸した繊維に１４０℃の空気雰囲気下で、繊維の全長が処理前の７５％の長さに収縮するまで熱弛緩処理する工程を順次経て、単繊度が６５デシテックスの繊維を得た。
(Example 1)
(A) 74% by mass of vinyl chloride resin (TH-1000: Degree of polymerization 1000) manufactured by Taiyo PVC Co., Ltd. and polylactic acid resin (Terramac TE-4000 manufactured by Unitika Co., Ltd .: melting point 170 ° C., L-form ratio 98.98 2-98.5%) 13% by mass, methyl methacrylate (Parapet G, Kuraray Co., Ltd.) 13% by mass as an acrylic polymer, 1 mass of hydrotalcite-based composite thermal stabilizer (CP-410A, Nissan Chemical Industries) Part, ester type lubricant (EW-100, manufactured by Riken Vitamin Co., Ltd.), a step of mixing the resin composition by stirring and heating up to 100 ° C. with a ribbon blender, (b) the mixed resin composition Using a spinning die having a vertical nozzle shape, a nozzle hole cross-sectional area of 0.05 mm 2 , and a nozzle hole number of 180, a mold temperature of 190 ° C. and an extrusion amount of 1 A step of melt spinning with a 40 mm single screw extruder at 5 kg / hour to obtain an unstretched yarn having an average fineness of 150 dtex; and (c) a step of stretching the melt spun fiber to 300% in an air atmosphere at 105 ° C. (D) A fiber having a single fineness of 65 dtex is sequentially passed through a process of heat-relaxing the stretched fiber in an air atmosphere at 140 ° C. until the total length of the fiber contracts to 75% of the length before the treatment. Got.
（実施例２〜１６）
表１、２に示す塩化ビニル系樹脂、ポリエステル系樹脂、アクリル重合体の配合量を用いて、実施例１と同様にして、繊維を得た。
(Examples 2 to 16)
Fibers were obtained in the same manner as in Example 1 using the blending amounts of vinyl chloride resin, polyester resin, and acrylic polymer shown in Tables 1 and 2.
（実施例１７、１８）
塩化ビニル系樹脂を、重合度を変えたもの（大洋塩ビ社製 ＴＨ−７００：重合度７００、ＴＨ−２０００：重合度２０００）に変更した以外は、実施例１と同様にして、繊維を得た。
(Examples 17 and 18)
A fiber was obtained in the same manner as in Example 1 except that the vinyl chloride resin was changed to one having a different degree of polymerization (TH-700: degree of polymerization 700, TH-2000: degree of polymerization 2000, manufactured by Taiyo PVC Co., Ltd.). It was.
（実施例１９）
塩化ビニル系樹脂を塩化ビニル−エチレンコポリマー樹脂（大洋塩ビ社製 ＴＥ−１０５０：重合度１０５０）に変更した以外は、実施例１と同様にして、繊維を得た。
(Example 19)
A fiber was obtained in the same manner as in Example 1 except that the vinyl chloride resin was changed to a vinyl chloride-ethylene copolymer resin (TE-1050: degree of polymerization 1050 manufactured by Taiyo PVC Co., Ltd.).
（実施例２０，２１）
ポリエステル系樹脂を、結晶性ポリエステル樹脂（東洋紡績社製 バイロンＧＭ−９２５：融点１６６℃、バイロンＧＡ−５４１０、融点１１７℃））に変更した以外は、実施例１と同様にして、繊維を得た。
(Examples 20 and 21)
A fiber was obtained in the same manner as in Example 1 except that the polyester resin was changed to a crystalline polyester resin (byron GM-925 manufactured by Toyobo Co., Ltd., melting point 166 ° C., byron GA-5410, melting point 117 ° C.). It was.
（実施例２２、２３）
アクリル重合体を、メタアクリル系樹脂（住友化学社製 スミペックスＬＧ）、アクリル共重合体（三菱レイヨン社製 メタブレンＰ−５０１Ａ）に変更した以外は、実施例１と同様にして、繊維を得た。
(Examples 22 and 23)
A fiber was obtained in the same manner as in Example 1 except that the acrylic polymer was changed to a methacrylic resin (Sumipex LG manufactured by Sumitomo Chemical Co., Ltd.) and an acrylic copolymer (Mettablen P-501A manufactured by Mitsubishi Rayon Co., Ltd.). .
（比較例１〜４）
表２に示す塩化ビニル系樹脂、ポリエステル系樹脂、アクリル重合体の配合量を用い、実施例１と同様にして、繊維を得た。
(Comparative Examples 1-4)
Fibers were obtained in the same manner as in Example 1 using the blending amounts of vinyl chloride resin, polyester resin, and acrylic polymer shown in Table 2.
表１、２から明らかなように、本発明は、熱収縮性、透明性に優れ、光沢が少なく、また、溶融紡糸時に糸切れの少ない繊維を容易に得られることができる。 As is apparent from Tables 1 and 2, the present invention can easily obtain a fiber having excellent heat shrinkability and transparency, less gloss, and less yarn breakage during melt spinning.
本発明の樹脂組成物を用いて得られた繊維は、例えばウィッグ、ヘアピース、ブレード、ドールヘアー、エクステンションヘアー等の頭髪装飾用の人工毛髪用繊維に好適に用いることができる。
The fiber obtained by using the resin composition of the present invention can be suitably used for artificial hair fibers for hair decoration such as wigs, hair pieces, blades, doll hairs, extension hairs, and the like.
Claims (8)
A hair decoration fiber comprising the artificial hair fiber according to claim 7.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101336422B1 (en) | 2013-04-03 | 2013-12-04 | 심필보 | Manufacturing method of artificial eyelashes and artificial eyelashe |
| WO2015020104A1 (en) | 2013-08-06 | 2015-02-12 | 株式会社カネカ | Soft thermoplastic resin composition |
| WO2015020105A1 (en) | 2013-08-06 | 2015-02-12 | 株式会社カネカ | Soft thermoplastic resin composition |
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| KR101336422B1 (en) | 2013-04-03 | 2013-12-04 | 심필보 | Manufacturing method of artificial eyelashes and artificial eyelashe |
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| WO2015020105A1 (en) | 2013-08-06 | 2015-02-12 | 株式会社カネカ | Soft thermoplastic resin composition |
| CN105452367A (en) * | 2013-08-06 | 2016-03-30 | 株式会社钟化 | Soft thermoplastic resin composition |
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| US9562155B2 (en) | 2013-08-06 | 2017-02-07 | Kaneka Corporation | Soft thermoplastic resin composition |
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| JPWO2015020105A1 (en) * | 2013-08-06 | 2017-03-02 | 株式会社カネカ | Soft thermoplastic resin composition |
| CN105452367B (en) * | 2013-08-06 | 2018-04-27 | 株式会社钟化 | Soft thermoplastic resin combination |
| CN105452368B (en) * | 2013-08-06 | 2019-05-03 | 株式会社钟化 | Soft thermoplastic resin combination |
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| CN109851948A (en) * | 2019-01-09 | 2019-06-07 | 青岛海湾化学有限公司 | A kind of PVC Compatibilized blends and preparation method thereof |
| WO2023241615A1 (en) * | 2022-06-14 | 2023-12-21 | 北京微构工场生物技术有限公司 | Wig fiber and preparation method therefor |
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