JP7522047B2 - 人工毛髪用芯鞘複合繊維、それを含む頭飾製品及びその製造方法 - Google Patents
人工毛髪用芯鞘複合繊維、それを含む頭飾製品及びその製造方法 Download PDFInfo
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- JP7522047B2 JP7522047B2 JP2020572131A JP2020572131A JP7522047B2 JP 7522047 B2 JP7522047 B2 JP 7522047B2 JP 2020572131 A JP2020572131 A JP 2020572131A JP 2020572131 A JP2020572131 A JP 2020572131A JP 7522047 B2 JP7522047 B2 JP 7522047B2
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Images
Classifications
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- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- 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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- 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
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- A—HUMAN NECESSITIES
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- A41G3/00—Wigs
- A41G3/0083—Filaments for making wigs
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2503/00—Domestic or personal
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Landscapes
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- Chemical & Material Sciences (AREA)
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Description
本発明の製造方法によれば、人毛に近い触感を有し、室温における耐剥離性に優れ、櫛通り性が良好な人工毛髪用芯鞘複合繊維を得ることができる。
本発明の1以上の実施形態において、人工毛髪用芯鞘複合繊維は、芯部と鞘部で構成され、扁平多葉形の断面形状を有する。好ましくは、芯部も扁平多葉形の断面形状を有する。前記扁平多葉形は、特に限定されないが、例えば、円形及び楕円形からなる群から選ばれる二つ以上の葉形が凹部を介して結合したものが挙げられ、葉形の数が2~10であってもよく、2~8であってもよい。生産性の観点から、二つの円形及び/又は楕円形が凹部を介して結合した扁平二葉形であることが好ましい。また、円形又は楕円形の形状は、必ずしも連続した弧を描く必要はなく、鋭角な角でなければ一部が変形した略円形又は略楕円形も含む。また、添加剤等を含むことにより繊維断面および芯部外周に生じる2μm以下の凹凸は考慮しなくてもよい。
L/S1=1.1以上2.0以下 (1)
Lc/S1c=1.1以上2.0以下 (2)
芯部樹脂組成物又は鞘部樹脂組成物の溶融粘度は、ペレット状の樹脂組成物を吸水率(水分量とも称される。)が1000ppm以下になるように除湿乾燥し、樹脂組成物のサンプル量20cc、ピストンスピード200mm/min、キャピラリー長20mm、キャピラリー径1mmの条件で、繊維化時の温度、すなわち紡糸時のノズル温度を設定温度として測定した値である。難燃剤、顔料などの添加剤を含有させる場合は、予め一般的な混練機を用いて樹脂と添加剤を溶融混練してペレット化したものを用いる。例えば、測定機器はダイニスコ社製のキャピラリーレオメータLCR7000が挙げられる。
前記人工毛髪用芯鞘複合繊維の組成は、特に限定されない。例えば、上記人工毛髪用芯鞘複合繊維は、ポリエステル系樹脂組成物、ポリアミド系樹脂組成物、塩化ビニル系樹脂組成物、モダアクリル系樹脂組成物、ポリカーボネート系樹脂組成物、ポリオレフィン系樹脂組成物、ポリフェニレンサルファイド系樹脂組成物などの樹脂組成物で構成することができる。また、これらの樹脂組成物を2種類以上組み合わせてもよい。さらに、難燃性の観点から、難燃剤を併用することもでき、ポリエステル系樹脂と臭素系高分子難燃剤を含むポリエステル系樹脂組成物や、ポリアミド系樹脂と臭素系高分子難燃剤を含むポリアミド系樹脂組成物などが好ましく用いられる。前記人工毛髪用芯鞘複合繊維は、耐熱性と難燃性の観点から、芯部及び/又は鞘部が、ポリエステル樹脂と臭素系高分子難燃剤を含むポリエステル系樹脂組成物で構成されることが好ましい。具体的には、ポリエステル樹脂と、臭素系高分子難燃剤を含むポリエステル系樹脂組成物を溶融紡糸した繊維を用いることができる。より好ましくは、ポリアルキレンテレフタレート及びポリアルキレンテレフタレートを主体とした共重合ポリエステルからなる群から選ばれる1種以上のポリエステル樹脂100重量部と、臭素系高分子難燃剤5重量部以上40重量部以下を含むポリエステル系樹脂組成物で構成されている。
本発明の繊維の製造方法としては、溶融紡糸法が好ましく、例えば、ポリエステル系樹脂組成物の場合は、押出機、ギアポンプ、ノズルなどの温度を250℃以上300℃以下とし、溶融紡糸し、紡出糸条を加熱筒に通過させた後、ポリエステル樹脂のガラス転移点以下に冷却し、50m/分以上5000m/分以下の速度で引き取ることにより紡出糸条(未延伸糸)が得られる。また、ポリアミド系樹脂組成物の場合は、押出機、ギアポンプ、ノズルなどの温度を260℃以上320℃以下とし、溶融紡糸し、紡出糸条を加熱筒に通過させた後、ポリアミド樹脂のガラス転移点以下に冷却し、50m/分以上5000m/分以下の速度で引き取ることにより紡出糸条(未延伸糸)が得られる。
人工毛髪用芯鞘複合繊維は、頭飾製品であれば特に限定することなく用いることができる。例えば、ヘアーウィッグ、かつら、ウィービング、ヘアーエクステンション、ブレードヘアー、ヘアーアクセサリー及びドールヘアーなどに用いることができる。
芯部及び鞘部に用いた水分量1000ppm以下に乾燥したペレット状の樹脂の溶融粘度を、サンプル量20cc、ピストンスピード200mm/min、キャピラリー長20mm、キャピラリー径1mmの条件で、繊維化時の温度、すなわち紡糸時のノズル温度を設定温度として測定した。
オートバイブロ式繊度測定器「DENIER COMPUTER タイプDC-11」(サーチ社製)を使用して測定し、30個のサンプルの測定値の平均値を算出して単繊維繊度とした。
室温(23℃)にて、繊維を束ね、繊維束がズレないように収縮チューブで固定した後、カッターで切断し、その際の芯と鞘の剥離の有無を、目視にて評価、あるいは、切断した繊維断面をレーザー顕微鏡(株式会社キーエンス社製、「VK-9500」)にて観察し評価した。
室温(23℃)にて、繊維を束ね、繊維束がズレないように収縮チューブで固定した後、カッターで輪切りにし、断面観察用繊維束を作製した。この繊維束をレーザー顕微鏡(株式会社キーエンス社製、「VK-9500」)にて500倍の倍率で撮影し、繊維断面写真を得た。繊維断面写真に基づいて、L/S1及びLc/SC1を求めた。
専門美容師による官能評価を行い、以下の4段階の基準で評価した。
A:人毛と同等の非常に良好な触感
B:人毛に比べやや劣るが良好な触感
C:人毛に比べ劣る悪い触感
D:人毛に比べ大きく劣る悪い触感
カールを完全に伸ばした状態で、繊維を長さが63.5cmになるように切断し、得られた繊維長が63.5cmの繊維5.0gを束ねた。その後、繊維束の中央を紐で括り、2つ折りにして紐の部分を固定して、ヘアーアイロン加工用の繊維束を作製した。次に、180℃に加熱したヘアーアイロン(米国IZUNAMI.INC社製、「IZUNAMI ITC450 フラットアイロン」)にて、繊維束を固定している根元から毛先までを圧着しながら加熱する操作を5回繰り返し、櫛通り性評価用の繊維束を作製した。その後、髪梳き用の櫛(ドイツ製、「MATADOR PROFESSIONAL 386.8 1/2F」)にて、櫛通り性評価用の繊維束を固定している根元から毛先まで100回櫛を通し、変形あるいは分裂した繊維の数から、以下の基準にて櫛通り性を評価した。
A:櫛を100回通して変形あるいは分裂した繊維は10本未満で、最後まで抵抗なく櫛が通る
B:櫛を100回通して変形あるいは分裂した繊維は10本以上30本未満で、途中で抵抗がやや強くなるが櫛は通るレベル
C:櫛を100回通して変形あるいは分裂した繊維は30本以上100本未満で、途中で抵抗が強くなり、櫛の通らないことが1回以上20回未満の確率で発生するレベル
D:櫛を100回通して変形あるいは分裂した繊維は100本以上で、途中で抵抗が強くなり、櫛の通らないことが20回以上の確率で発生するレベル
水分量1000ppm以下に乾燥したポリエチレンテレフタレートペレット(イーストマンケミカル社製、商品名「A-12」)とナイロン6ペレット(ユニチカ社製、商品名「A1030BRL)を溶融紡糸機に供給し、設定温度が270℃であり、表1に記載のノズル形状を有する芯鞘型複合紡糸ノズル(孔)より溶融ポリマーを吐出し、ガラス転移温度以下に冷却し、60~150m/分の速度で巻き取ってポリエチレンテレフタレート(PETと称す場合がある。)を芯部とし、ナイロン6(PA6と称す場合がある。)を鞘部とし、ポリエチレンテレフタレートとナイロン6の芯鞘比率が面積比で芯:鞘=5:5である芯鞘複合繊維の未延伸糸を得た。得られた未延伸糸を80℃で延伸を行い、3倍延伸糸とし、200℃に加熱したヒートロールを用いて、熱処理を行い、仕上げ油剤A(丸菱油化工業社製、商品名「KWC-Q」)を0.20omf(乾燥繊維重量に対する油剤純分重量百分率)、及び仕上げ油剤B(丸菱油化工業社製、商品名「KWC-B」)を0.10%omfとなるように付着させ、乾燥させた後、表1に示す単繊維繊度の複合繊維(マルチフィラメント)を得た。
芯部に用いる樹脂を水分量1000ppm以下に乾燥したポリエチレンテレフタレートペレット(ベルポリエステルプロダクツ社製、商品名「DFG1」とした以外は実施例1と同様にして複合繊維を得た。
芯鞘比率を面積比で2:8に変更した以外は、実施例1と同様にして複合繊維を得た。
芯鞘比率を面積比で8:2に変更した以外は、実施例1と同様にして複合繊維を得た。
鞘部に用いる樹脂を水分量1000ppm以下に乾燥したナイロン66(PA66と称す場合がある。)(東レ社製、商品名「アミランCM3001」)とし、ノズル設定温度280℃とした以外は実施例1と同様にして複合繊維を得た。
芯部に用いる樹脂を水分量1000ppm以下に乾燥したポリブチレンテレフタレートペレット(三菱ケミカル社製、商品名「ノバデュラン5020」とし、ノズル設定温度260℃とし、芯鞘比率を面積比で7:3に変更した以外は実施例1と同様にして複合繊維を得た。
表1に記載のノズル形状を有する芯鞘型複合紡糸ノズルを用いた以外は実施例1と同様にして複合繊維を得た。
鞘部に用いる樹脂を水分量1000ppm以下に乾燥したナイロン6(ユニチカ社製、商品名「A1030BRT」とした以外は実施例1と同様にして下複合繊維を得た。
芯鞘比率を面積比で1:9に変更した以外は、実施例1と同様にして複合繊維を得た。
芯鞘比率を面積比で9.5:0.5に変更した以外は、実施例1と同様にして複合繊維を得た。
10 鞘部
20 芯部
Claims (4)
- 芯部と鞘部で構成された人工毛髪用芯鞘複合繊維であって、
前記人工毛髪用芯鞘複合繊維は、同心タイプであり、
前記人工毛髪用芯鞘複合繊維は、扁平多葉形の断面形状を有し、繊維断面における芯鞘比率が面積比で芯:鞘=3:7~7:3であり、
前記人工毛髪用芯鞘複合繊維において、芯部は扁平多葉形の断面形状を有し、繊維断面長軸方向と芯部断面長軸方向が一致しており、
前記扁平多葉形は、二つの円形及び/又は楕円形が凹部を介して結合した扁平二葉形であり、
前記人工毛髪用芯鞘複合繊維の芯部が、ポリアルキレンテレフタレート及びポリアルキレンテレフタレートを主体とした共重合ポリエステルからなる群から選ばれる1種以上のポリエステル系樹脂を主成分として含み、
前記人工毛髪用芯鞘複合繊維の鞘部が、ナイロン6及びナイロン66からなる群から選ばれる少なくとも1種を主体としたポリアミド系樹脂を主成分として含み、
芯部樹脂組成物の溶融粘度aと鞘部樹脂組成物の溶融粘度bの粘度比a/bが2.0以上7.0以下であることを特徴とする人工毛髪用芯鞘複合繊維。 - 請求項1に記載の人工毛髪用芯鞘複合繊維を含むことを特徴とする頭飾製品。
- 前記頭飾製品が、ヘアーウィッグ、かつら、ウィービング、ヘアーエクステンション、ブレードヘアー、ヘアーアクセサリー及びドールヘアーからなる群から選ばれる一種である請求項2に記載の頭飾製品。
- 請求項1に記載の人工毛髪用芯鞘複合繊維の製造方法であって、
芯部樹脂組成物及び鞘部樹脂組成物を芯鞘型複合ノズルを用いて溶融紡糸する工程を含み、
ノズルの設定温度における芯部樹脂組成物の溶融粘度aと鞘部樹脂組成物の溶融粘度bの粘度比a/bが2.0以上7.0以下であることを特徴とする、人工毛髪用芯鞘複合繊維の製造方法。
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