EP0355749B1 - Polyvinylchloridfasern für künstliches Haar und Herstellung dieser Fasern - Google Patents

Polyvinylchloridfasern für künstliches Haar und Herstellung dieser Fasern Download PDF

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Publication number
EP0355749B1
EP0355749B1 EP89115298A EP89115298A EP0355749B1 EP 0355749 B1 EP0355749 B1 EP 0355749B1 EP 89115298 A EP89115298 A EP 89115298A EP 89115298 A EP89115298 A EP 89115298A EP 0355749 B1 EP0355749 B1 EP 0355749B1
Authority
EP
European Patent Office
Prior art keywords
fibers
fiber
vinyl chloride
weight
hair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89115298A
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English (en)
French (fr)
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EP0355749A2 (de
EP0355749A3 (de
Inventor
Masahiko Takada
Masaharu Fujii
Naohiko Kakita
Tatsuo Shibayama
Yoichi Kanbara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry Co Ltd
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Filing date
Publication date
Application filed by Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Publication of EP0355749A2 publication Critical patent/EP0355749A2/de
Publication of EP0355749A3 publication Critical patent/EP0355749A3/de
Application granted granted Critical
Publication of EP0355749B1 publication Critical patent/EP0355749B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
    • A41G3/00—Wigs
    • A41G3/0083—Filaments for making wigs
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41G—ARTIFICIAL FLOWERS; WIGS; MASKS; FEATHERS
    • A41G3/00—Wigs
    • 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • 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
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/32—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising halogenated hydrocarbons as the major constituent

Definitions

  • the present invention relates to polyvinyl chloride fibers for artificial hair and a process for producing the same. More particularly, the present invention relates to polyvinyl chloride fibers for artificial hair having good processability, functions and cosmetic or beauty properties such as feeling when used for wigs, hair accessories and doll hair.
  • modacrylic fibers e.g. fiber comprising a copolymer of 50 % by weight of acrylonitrile and 50 % by weight of vinyl chloride
  • polyvinyl chloride fibers polyvinylidene chloride fibers
  • polyester fibers are commercially available. From US-4012346 it is also known to use fibers made from copolymers comprising up to 90% by weight of vinyl chloride.
  • Typical beauty properties required for the artificial hair fibers are as follows:
  • the conventional artificial hair fibers have their own advantages and disadvantages.
  • the modacrylic fibers have voluminess, feeling and gloss similar to the natural hair and good combability although reasons for these properties are not known, while they have poor curling properties such that their bundle tends to be twisted when curled (poor maintenance of up-curling), their curling comes loose as time passes (poor maintenance of curling) or they have less resiliency. Because of these reasons, the modacrylic fibers are mainly used in products with a natural style (namely, hairs with slight wave or no wave).
  • the polyvinyl chloride fibers have good curling properties. For example, they are easily curled although the reason for this is not known, the curled hairs do not go out of shape as time passes, and when spirally curled, they have resilient feeling. However, they lack the organoleptic properties, that is, they have poor voluminess, or feeling and gloss close to synthetic fibers. Then, they are mainly used in products of wave style or straight style (in which only the tip parts are curled).
  • One object of the present invention is to provide a synthetic fiber from which a hair product satisfying various beauty requirements can be produced.
  • Another object of the present invention is to provide a synthetic fiber which can provide a wide variety of hair styles.
  • a vinyl chloride base fiber for artificial hairs which comprises a copolymer comprising 85 to 70 % by weight of repeating units derived from vinyl chloride, 15 to 30 % by weight of repeating units derived from acrylonitrile and 0 to 5 % by weight of repeating units derived from at least one ethylenically unsaturated monomer copolymerizable therewith.
  • the vinyl chloride units in the copolymer of the present invention impart a well knit curl shape which does not come loose as time passes to the artificial hair fibers and give resiliency when the hairs are spirally curled.
  • the acrylonitrile units impart feeling or voluminess close to the natural hair and good combability.
  • the fiber When the content of the vinyl chloride units is less than 70 % by weight, the fiber does not have satisfactory curling properties such as knitting of curl shape, maintenance of curling, resiliency and the like. When the content of the vinyl chloride exceeds 85 % or the content of the acrylonitrile units is less than 15 % by weight, the fiber does not have satisfactory organoleptic properties which are imparted by the acrylonitrile units, such as feeling and voluminess close the natural hair, or combability.
  • the optionally contained ethylenically unsaturated monomer improves the properties such as dyeing properties or processability of the fiber.
  • examples of such monomer are acrylic acid and methacrylic acid or their salts or esters, vinylidene chloride, vinyl bromide, vinylidene bromide, methallylsulfonic acid and styrenesulfonic acid or their salts, acrylamide, vinyl acetate and the like.
  • the copolymer is preferably used independently, although it can be used in combination with a small amount of at least one of other resins.
  • Examples of the other polymers are vinyl chloride resin, polyacrylonitrile, vinyl chloride-acrylonitrile copolymer, vinylidene chloride-acrylonitrile copolymer and the like.
  • the amount of the other resin is determined according to the final use of the fiber, and usually not more than 30 % by weight, preferably not more than 20 % by weight based on the total weight of the polymers.
  • the cross sectional profile of the fiber of the present invention is not critical. Although the cross section of a round shape, a horseshoe shape, a star shape or a Y shape may achieve the objects of the present invention, the fiber of the present invention preferably has a cross section of an H shape or a dumbbell shape as shown in Figs. 1 and 2, respectively since the fiber with the H shaped or dumbbell shaped cross section has gloss, depth of color and flexibility which are close to the natural hair.
  • the H shaped cross section has the ratio of b/a of less than 1.5 and preferably not less than 0.5 as shown in Fig. 1, and the dumbbell shaped cross section has the ratio of b/a of not less than 1.5 and preferably not larger than 3 as shown in Fig. 2.
  • the fineness of the fiber is not critical in the present invention, and any fiber having the fineness which is suitable for the artificial hair can be used.
  • the fiber has the fineness of 40 to 70 deniers.
  • the fineness is less than 40 deniers, the fiber may be too thin as the hair fiber so that the maintenance of curling may be deteriorated.
  • the fineness is larger than 70 deniers, the fiber may be too thick and stiff for the artificial hair.
  • the copolymer to be used in the present invention may be prepared by any of conventional polymerization methods in an aqueous system such as suspension polymerization or emulsion polymerization.
  • the other resin is added to the copolymer, and the copolymer or the mixture of the copolymer and the other resin is dissolved in a solvent to form a solution preferably of a concentration of from 25 to 35 %.
  • a solvent examples include dimethylformamide, dimethylacetoamide, dimethylsulfoxide, acetone, acetonitrile, etc.
  • the polymer solution as such can be used as a spinning solution, although any of conventional additives such as titanium oxide, colloidal silica, calcium sulfate, aluminum hydroxide and the like may be added to the spinning solution to improve the properties of the spun fiber.
  • any of conventional additives such as titanium oxide, colloidal silica, calcium sulfate, aluminum hydroxide and the like may be added to the spinning solution to improve the properties of the spun fiber.
  • the spinning solution is spun by a conventional wet or dry spinning method, dried and drawn followed by heating at a temperature of 100 to 140°C by dry heat or at a temperature of 80 to 110°C by wet heat.
  • the heating after drawing relieves strain of the fiber generated during drawing and is carried out usually for 0.5 to 5 minutes.
  • the dry heat is applied at a temperature lower than 100°C or the wet heat is applied at a temperature lower than 80°C, the produced hair fibers easily shrink at a temperature at which the fibers are set in the desired style, for example, 80 to 110°C during the production of hair products from the fibers.
  • the dry heat is applied at a temperature higher than 140°C or the wet heat is applied at a temperature higher than 110°C, the fibers are fused together during heat treatment at such high temperature.
  • Fibers cut to a predetermined length or fibers cut to a predetermined length and arranged in parallel with each other are wound around an aluminum pipe having a diameter of 10 to 40 mm according to styles and heat treated in an oven at a temperature of 80 to 110°C or about 180°C in case of polyester fibers. Then, the curled fibers are fixed on a cap base with a sewing machine or a filling needle to produce an artificial hair of the head and subjected to the evaluations on the properties listed in the beginning of the specification.
  • the cross section of the fiber is observed with a scanning electron microscope.
  • Table 2 includes the accommodation of the fibers to various styles. These results indicate that the fibers of the present invention can be arranged in various styles.
  • Example 2 In the same manner as in Example 1, a spinning solution was prepared and spun through an orifice having dumbbell shaped pores, coagulated, washed with water, dried and drawn followed by heat treating with dry heat at 125°C to obtain fibers having a fineness of 55 deniers and a cross section of dumbbell shape.
  • Table 2 includes the accommodation of the fibers to various styles. These results indicate that the fibers of the present invention can be arranged in various styles.
  • Example 2 In the same manner as in Example 1, a spinning solution was prepared and spun through an orifice having round pores, coagulated, washed with water, dried and drawn followed by heat treating with dry heat at 125°C to obtain fibers having a fineness of 55 deniers and a cross section of horseshoe shape.
  • acetone 85 % of the copolymer prepared in Example 1 and 15 % of a copolymer of 50 % of vinyl chloride, 49 % of acrylonitrile and 1 % of sodium styrenesulfonate were mixed and dissolved to prepare a spinning solution Then, the a spinning solution was spun through an orifice having dumbbell shaped pores, coagulated, washed with water, dried and drawn followed by heat treating with dry heat at 130°C to obtain fibers having a fineness of 55 deniers and a cross section of horseshoe shape.

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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)
  • Artificial Filaments (AREA)
  • Toys (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (5)

  1. Faser auf Vinylchlorid-Basis für künstliche Haare, die ein Copolymer enthält, welches von Vinylchlorid abgeleitete Repetiereinheiten, von Acrylnitril abgeleitete Repetiereinheiten und wahlweise Repetiereinheiten, die von mindestens einem ethylenartig ungesättigten Monomeren, das mit den genannten copolymerisierbar ist, abgeleitet sind, enthält,
    dadurch gekennzeichnet,
    daß das Copolymer 85 bis 70 Gew.-%, ausgenommen 70 Gew.-%, von Vinylchlorid abgeleitete Repetiereinheiten, 15 bis 30 Gew.-% von Acrylnitril abgeleitete Repetiereinheiten und 0 bis 5 Gew.-% Repetiereinheiten, die von mindestens einem ethylenartig ungesättigten Monomeren, das mit den genannten copolymerisierbar ist, abgeleitet sind, enthält.
  2. Faser auf Vinylchlorid-Basis nach Anspruch 1, die einen H-förmigen Querschnitt und eine Feinheit von 40 bis 70 Denier hat.
  3. Faser auf Vinylchlorid-Basis nach Anspruch 1, die einen Dumbbell-förmigen Querschnitt und eine Feinheit von 40 bis 70 Denier hat.
  4. Verfahren zur Herstellung einer Faser auf Vinylchlorid-Basis für künstliche Haare, wobei das Verfahren die folgenden Schritte umfaßt:
    - Lösen eines Copolymeren nach Anspruch 1 in einem Lösungsmittel unter Bildung einer Spinnlösung;
    - Spinnen der Spinnlösung nach einem Naß- oder Trockenspinnverfahren;
    - Trocknen und Verstrecken der gesponnenen Faser und
    - thermisches Behandeln der Faser mit trockener Hitze bei einer Temperatur zwischen 100 und 140°C oder feuchter Hitze bei einer Temperatur zwischen 30 und 110°C.
  5. Verfahren nach Anspruch 4, in dem die Spinnlösung eine Konzentration von 25 bis 35 Gew.-% hat.
EP89115298A 1988-08-18 1989-08-18 Polyvinylchloridfasern für künstliches Haar und Herstellung dieser Fasern Expired - Lifetime EP0355749B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP204963/88 1988-08-18
JP63204963A JPH06104928B2 (ja) 1988-08-18 1988-08-18 毛髪用塩化ビニル系繊維およびその製造法

Publications (3)

Publication Number Publication Date
EP0355749A2 EP0355749A2 (de) 1990-02-28
EP0355749A3 EP0355749A3 (de) 1991-03-13
EP0355749B1 true EP0355749B1 (de) 1996-03-20

Family

ID=16499202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115298A Expired - Lifetime EP0355749B1 (de) 1988-08-18 1989-08-18 Polyvinylchloridfasern für künstliches Haar und Herstellung dieser Fasern

Country Status (6)

Country Link
EP (1) EP0355749B1 (de)
JP (1) JPH06104928B2 (de)
KR (1) KR0130470B1 (de)
CN (1) CN1040402A (de)
CA (1) CA1333739C (de)
DE (1) DE68926003T2 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08306373A (ja) * 1995-04-28 1996-11-22 Tonen Corp 高温型燃料電池の運転方法及び高温型燃料電池
JP3365141B2 (ja) * 1995-04-28 2003-01-08 鐘淵化学工業株式会社 人工毛髪用異形断面繊維
JP3389735B2 (ja) * 1995-05-10 2003-03-24 鐘淵化学工業株式会社 嵩高性に優れた人工毛髪用繊維
CN1089820C (zh) * 1997-03-11 2002-08-28 钟渊化学工业株式会社 氯乙烯纤维及其制备方法
JP3879244B2 (ja) * 1997-05-08 2007-02-07 株式会社カネカ 獣毛様風合を有するアクリル系合成繊維
JPH11217714A (ja) * 1997-11-21 1999-08-10 Kanegafuchi Chem Ind Co Ltd 人工毛髪及びそれを用いた頭飾製品用繊維束
KR20010011378A (ko) * 1999-07-27 2001-02-15 임성순 합성섬유의 제조방법
JP2002225935A (ja) * 2001-02-02 2002-08-14 Kanegafuchi Chem Ind Co Ltd 合成繊維束の梱包方法、およびそれからなるかつら用合成繊維束。
US7501177B2 (en) 2004-02-27 2009-03-10 Kaneka Corporation Artificial hair fiber bundle and hair decorative product using the same
KR101154906B1 (ko) * 2005-06-16 2012-06-13 덴끼 가가꾸 고교 가부시키가이샤 인공 모발용 섬유 다발 및 그것을 사용한 두발 장식 제품
WO2006135060A1 (ja) * 2005-06-16 2006-12-21 Denki Kagaku Kogyo Kabushiki Kaisha 人工毛髪用繊維及びその製造方法、並びに、頭髪装飾製品
KR20080064809A (ko) * 2005-11-02 2008-07-09 덴끼 가가꾸 고교 가부시키가이샤 이형 단면 섬유 및 그것으로 이루어진 인공 모발용 섬유
KR101427739B1 (ko) * 2006-09-21 2014-08-07 가부시키가이샤 가네카 가공성이 개량된 인공 모발용 섬유 및 그것을 사용한 두발 장식품
CN103088449A (zh) * 2011-11-06 2013-05-08 河南瑞贝卡发制品股份有限公司 一种发用纤维的后处理方法
CN102560736B (zh) * 2011-12-19 2014-06-25 河南瑞贝卡发制品股份有限公司 一种发用聚氯乙烯纤维和方法
CN102732986A (zh) * 2012-06-21 2012-10-17 精源(南通)化纤制品有限公司 一种耐高温含氯高聚物人工毛发及其制备方法
WO2019021809A1 (ja) * 2017-07-28 2019-01-31 東レ株式会社 捲縮繊維、スパンボンド不織布、およびそれらの製造方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789613A (en) * 1980-11-26 1982-06-04 Kanegafuchi Chem Ind Co Ltd Flame-retardant acrylic synthetic fiber

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1460251A (en) * 1974-03-09 1976-12-31 Kanegafuchi Chemical Ind Acrylic synthetic fibre having an animal hair-like feel and its method of manufacture
JPS539300A (en) * 1976-07-13 1978-01-27 Agency Of Ind Science & Technol Production of gadolinium molybdate single crystal
US4316924A (en) * 1979-03-26 1982-02-23 Teijin Limited Synthetic fur and process for preparation thereof
JPS6018323B2 (ja) * 1979-05-17 1985-05-09 帝人株式会社 かつらの製造法
JPS58120810A (ja) * 1981-12-29 1983-07-18 Kanegafuchi Chem Ind Co Ltd モダアクリル系繊維束
JPH0232372B2 (ja) * 1984-11-08 1990-07-19 Toray Industries Tokushukaryorikakoitonoseizohoho
JPS61113814A (ja) * 1984-11-09 1986-05-31 Asahi Chem Ind Co Ltd 塩化ビニリデン系樹脂延伸糸
JPS6257649A (ja) * 1985-08-13 1987-03-13 ジユ−ト−ヒエミ−　アクチエンゲゼルシヤフト 燃焼排ガスの窒素酸化物含有量を減少させる触媒
JPS63243317A (ja) * 1987-03-27 1988-10-11 Tokuyama Sekisui Kogyo Kk 毛髪代用糸
JPS63290595A (ja) * 1987-05-23 1988-11-28 鐘淵化学工業株式会社 人形頭髪用繊維

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789613A (en) * 1980-11-26 1982-06-04 Kanegafuchi Chem Ind Co Ltd Flame-retardant acrylic synthetic fiber

Also Published As

Publication number Publication date
EP0355749A2 (de) 1990-02-28
JPH06104928B2 (ja) 1994-12-21
KR900003439A (ko) 1990-03-26
KR0130470B1 (ko) 1998-04-08
CA1333739C (en) 1994-12-27
JPH0253910A (ja) 1990-02-22
DE68926003T2 (de) 1996-08-29
CN1040402A (zh) 1990-03-14
DE68926003D1 (de) 1996-04-25
EP0355749A3 (de) 1991-03-13

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