JP6065976B2 - Acrylic fiber and its manufacturing method, spun yarn and knitted fabric using the fiber - Google Patents
Acrylic fiber and its manufacturing method, spun yarn and knitted fabric using the fiber Download PDFInfo
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- JP6065976B2 JP6065976B2 JP2015523315A JP2015523315A JP6065976B2 JP 6065976 B2 JP6065976 B2 JP 6065976B2 JP 2015523315 A JP2015523315 A JP 2015523315A JP 2015523315 A JP2015523315 A JP 2015523315A JP 6065976 B2 JP6065976 B2 JP 6065976B2
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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
- D01F8/08—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyacrylonitrile as constituent
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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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/004—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by heating fibres, filaments, yarns or threads so as to create a temperature gradient across their diameter, thereby imparting them latent asymmetrical shrinkage properties
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
- D02G3/045—Blended or other yarns or threads containing components made from different materials all components being made from artificial or synthetic material
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/228—Stretching in two or more steps, with or without intermediate steps
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
- D04B1/20—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads crimped threads
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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
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
- D10B2401/046—Shape recovering or form memory
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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
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
-
- 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
- D10B2401/00—Physical properties
- D10B2401/16—Physical properties antistatic; conductive
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Knitting Of Fabric (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Multicomponent Fibers (AREA)
Description
本発明は優れた捲縮特性、抗ピル性を有するアクリル繊維及び同繊維の製造方法と、同繊維を使った紡績糸及び編地に関する。 The present invention relates to an acrylic fiber having excellent crimp characteristics and anti-pill properties, a method for producing the fiber, and a spun yarn and a knitted fabric using the fiber.
アクリル繊維は羊毛に似た嵩高性と保温性を有し、発色性、鮮明性、堅牢性に優れた染色特性や、耐光性、耐食性などの優れた特徴を生かして、衣料分野、インテリア分野、資材分野等へ幅広く利用されている。
一方、羊毛は嵩高性、圧縮抵抗性、弾性に優れているが、アクリル繊維は羊毛に類似した繊維といわれながら、圧縮抵抗性や弾性は羊毛に及ばない。このため従来から前述の特性をアクリル繊維に付与し、羊毛に近づける検討がなされている。Acrylic fiber has bulkiness and heat retention similar to wool, making use of excellent characteristics such as coloring properties, sharpness, fastness, light resistance, corrosion resistance, clothing field, interior field, Widely used in the material field.
On the other hand, wool is excellent in bulkiness, compression resistance, and elasticity, but acrylic fiber is said to be similar to wool, but compression resistance and elasticity do not reach wool. For this reason, conventionally, studies have been made to impart the above-mentioned properties to acrylic fibers and bring them closer to wool.
例えば、特開昭63−190019号公報(特許文献1)及び特開平1−104825号公報(特許文献2)には、共重合組成の異なる2種以上の共重合体を複合紡糸し、2層または多層構造を有する技術が開示されている。これらの複合繊維は紡糸原液を多層化装置を用いて層状に複合して製造される繊維であり、サイドバイサイド形状を安定して得ることが難しく、十分な嵩高性を得ることが困難である。 For example, in Japanese Patent Application Laid-Open No. 63-190019 (Patent Document 1) and Japanese Patent Application Laid-Open No. 1-104825 (Patent Document 2), two or more types of copolymers having different copolymer compositions are composite-spun and two layers are formed. Alternatively, a technique having a multilayer structure is disclosed. These composite fibers are fibers produced by combining the spinning dope in a layer using a multi-layer device, and it is difficult to stably obtain a side-by-side shape and it is difficult to obtain sufficient bulkiness.
また、例えば特開平7−197323号公報(特許文献3)には、親水性に差のある2種類のアクリロニトリル系重合体を、偏心または並列に複合紡糸する技術が開示されている。この複合繊維は湿潤時と乾燥時で可逆的に捲縮形態が変化する、自己捲縮性は有するものの、本発明の目的とする羊毛に似た嵩高感や反発感といった風合いをもたせるには至っていない。 Further, for example, Japanese Patent Application Laid-Open No. 7-197323 (Patent Document 3) discloses a technique in which two types of acrylonitrile-based polymers having a difference in hydrophilicity are subjected to composite spinning in an eccentric or parallel manner. Although this composite fiber reversibly changes its crimped form when wet and dry, it has a self-crimping property, but it has a texture such as bulkiness and resilience similar to the wool intended for the present invention. Not in.
更に、例えば特開昭59−192717号公報(特許文献4)によれば、収縮性に差のある2種類の重合体をサイドバイサイド型に複合紡糸する技術も開示されている。この方法による複合繊維はバルキー性により、嵩高感のある生地を得ることが可能であるが、染色などの熱水処理により繊維軸方向の収縮も発現することから、収縮後の風合いが固くなるといった問題がある。 Furthermore, for example, according to Japanese Patent Application Laid-Open No. 59-192717 (Patent Document 4), a technique for composite spinning of two types of polymers having different shrinkage properties into a side-by-side type is also disclosed. The composite fiber by this method can obtain a bulky fabric due to the bulkiness, but the shrinkage in the fiber axis direction is also expressed by hot water treatment such as dyeing, so that the texture after shrinkage becomes hard There's a problem.
これら従来技術による複合繊維は、繊維軸方向の収縮率が高いことから、一般的に糸染めでは綛状態での染色(綛染色)を行う必要がある。また、生地で染色しようとした場合には、収縮後の生地寸法を計算したうえで、予め密度の粗い生地を作製した後、染色工程での収縮をコントロールする必要があるため、高度な加工技術を要するものであった。 Since these composite fibers according to the prior art have a high contraction rate in the fiber axis direction, it is generally necessary to perform dyeing in a wrinkle state (wrinkle dyeing) in yarn dyeing. In addition, when trying to dye with fabric, it is necessary to control the shrinkage in the dyeing process after preparing the coarse fabric in advance after calculating the size of the fabric after shrinkage, so advanced processing technology Was necessary.
本発明の目的は、従来技術における上記問題点を解決するものであり、基本的には優れた捲縮特性と抗ピル性に優れた捲縮を有するアクリル繊維を提供することにある。 An object of the present invention is to solve the above-mentioned problems in the prior art, and basically to provide an acrylic fiber having excellent crimp characteristics and excellent crimp resistance.
本発明のアクリル繊維は、単繊維繊度が1.7〜6.6dtexであり、JIS L1015(2010)に準じて測定された捲縮率が15%以上、以下の方法で測定された嵩高性が380cm3 /g以上であり、アクリロニトリル単位を90質量%〜95質量%含有するアクリロニトリル系共重合体Aとアクリロニトリル単位を93.5質量%〜97.8質量%含有するアクリロニトリル系共重合体Bとが、繊維軸方向の繊維断面における面積比で1:3〜3:1の割合で、サイドバイサイド型に複合されてなる、アクリル繊維。
(嵩高性の測定方法)
(1)51mmに切断したアクリル繊維約10gを採取し、繊維同士の密着がなくなる程度に開繊する。
(2)前記開繊したアクリル繊維1.5gを分取する。
(3)約0.15gずつに分けて、底面積が33.17cm2 の1000mLメスシリンダーに静かに落下させて、隙間が空かないように均一に充填する。
(4)6gの荷重用円盤をメスシリンダーの中に降下させ、2分後に、アクリル繊維が占める容積vcm3 を測定する。
(5)次式により嵩高性を算出する。
嵩高性(cm3 /g)=v÷1.5
なお、測定は3検体について行い、それらの平均値を結果とする。
The acrylic fiber of the present invention has a single fiber fineness of 1.7 to 6.6 dtex, a crimp rate measured according to JIS L1015 (2010) of 15% or more, and bulkiness measured by the following method. 380 cm 3 / g or more der is, acrylonitrile copolymer containing ~97.8 wt% 93.5 wt% of acrylonitrile copolymer a and acrylonitrile units containing acrylonitrile units 90 wt% to 95 wt% B These are acrylic fibers that are combined in a side-by-side manner at a ratio of 1: 3 to 3: 1 in the area ratio in the fiber cross section in the fiber axis direction .
(Bulkness measuring method)
(1) Collect about 10 g of acrylic fiber cut to 51 mm and open it to such an extent that the fibers do not adhere to each other.
(2) Fractionate 1.5 g of the opened acrylic fiber.
(3) Divide into approximately 0.15 g portions, gently drop into a 1000 mL graduated cylinder with a bottom area of 33.17 cm 2 and fill evenly so that there is no gap.
(4) A 6 g load disk is lowered into the measuring cylinder, and after 2 minutes, the volume vcm 3 occupied by the acrylic fiber is measured.
(5) Bulkiness is calculated by the following equation .
Bulkiness (cm 3 /g)=v÷1.5
In addition, measurement is performed on three specimens, and the average value thereof is taken as the result.
本発明のアクリル繊維は、結節強度(cN/dtex)と結節伸度(%)の積が10〜25であることが好ましい。
本発明のアクリル繊維は、捲縮数が20個/2.54cm〜50個/2.54cmであることが好ましい。
The acrylic fiber of the present invention preferably has a product of nodule strength (cN / dtex) and nodule elongation (%) of 10 to 25.
The acrylic fiber of the present invention preferably has a number of crimps of 20 / 2.54 cm to 50 / 2.54 cm.
本発明のアクリル繊維は、アクリロニトリル単位90質量%〜95質量%含有するアクリロニトリル系共重合体Aとアクリロニトリル単位93.5質量%〜97.8質量%含有するアクリロニトリル系共重合体Bとが、繊維軸に垂直方向の繊維断面において面積比で1:3〜3:1の割合で、サイドバイサイド型に複合されてなることが好ましい。 The acrylic fiber of the present invention comprises an acrylonitrile copolymer A containing 90% to 95% by weight of acrylonitrile units and an acrylonitrile copolymer B containing 93.5% to 97.8% by weight of acrylonitrile units. It is preferable that the cross section of the fiber perpendicular to the axis is combined with the side-by-side type at a ratio of 1: 3 to 3: 1 in area ratio.
本発明のアクリル繊維は、前記共重合体Aのアクリロニトリル単位の含有量(質量%)の値と前記共重合体Bとのアクリロニトリル単位の含有量(質量%)の値の差が2以上であることが好ましい。 In the acrylic fiber of the present invention, the difference between the content (% by mass) of the acrylonitrile unit in the copolymer A and the content (% by mass) of the acrylonitrile unit from the copolymer B is 2 or more. It is preferable.
本発明のアクリル繊維は、前記共重合体Aをアクリロニトリル単位90質量%〜95質量%及びアクリロニトリル単位と共重合可能な不飽和単量体を5質量%〜10質量%とが共重合した共重合体であり、前記共重合体Bがアクリロニトリル単位を93.5質量%〜97.8質量%、アクリロニトリル単位と共重合可能な不飽和単量体単位を2質量%〜5質量%及びスルホン酸基含有モノマー単位を0.2質量%〜1.5質量%が共重合した共重合体であることが好ましい。 The acrylic fiber of the present invention is a copolymer obtained by copolymerizing the copolymer A with 90% by mass to 95% by mass of acrylonitrile units and 5% by mass to 10% by mass of unsaturated monomers copolymerizable with acrylonitrile units. The copolymer B is 93.5% by mass to 97.8% by mass of acrylonitrile units, 2% by mass to 5% by mass of unsaturated monomer units copolymerizable with acrylonitrile units, and sulfonic acid groups. A copolymer obtained by copolymerizing 0.2% by mass to 1.5% by mass of the containing monomer unit is preferable.
本発明のアクリル繊維は、前記共重合体A及び前記共重合体B中のアクリロニトリル単位と共重合可能な不飽和単量体単位として含有される単量体単位が酢酸ビニル単位であり、スルホン酸基含有モノマー単位がメタリルスルホン酸ソーダ単位であることが好ましい。
本発明のアクリル繊維は、2%〜7%収縮していることが好ましい。In the acrylic fiber of the present invention, the monomer unit contained as an unsaturated monomer unit copolymerizable with the acrylonitrile unit in the copolymer A and the copolymer B is a vinyl acetate unit, and sulfonic acid The group-containing monomer unit is preferably a sodium methallyl sulfonate unit.
The acrylic fiber of the present invention is preferably contracted by 2% to 7%.
本発明のアクリル繊維の製造方法は、アクリロニトリル単位90質量%〜95質量%含有する共重合体Aが溶媒に溶解した紡糸原液A’と、アクリロニトリル単位93.5質量%〜97.8質量%含有する共重合体Bが溶媒に溶解した紡糸原液B’とをサイドバイサイド形状にノズルから溶剤濃度35%〜60%の紡糸浴に吐出して複合繊維とするアクリル繊維の製造方法であって、共重合体Aのアクリロニトリル単位の含有量(質量%)の値と共重合体Bとのアクリロニトリル単位の含有量(質量%)の値との差が2以上である。 The acrylic fiber production method of the present invention comprises a spinning stock solution A ′ in which a copolymer A containing 90% by mass to 95% by mass of acrylonitrile units is dissolved in a solvent, and 93.5% by mass to 97.8% by mass of acrylonitrile units. A method for producing acrylic fibers comprising a spinning solution B ′ in which a copolymer B dissolved in a solvent is discharged into a spinning bath having a solvent concentration of 35% to 60% from a nozzle in a side-by-side shape to form a composite fiber. The difference between the content (mass%) of the acrylonitrile unit content of the coalescence A and the content (mass%) of the acrylonitrile unit content of the copolymer B is 2 or more.
本発明のアクリル繊維の製造方法は、前記共重合体Aがアクリロニトリル単位を90質量%〜95質量%、アクリロニトリル単位と共重合可能な不飽和単量体を5質量%〜10質量%が共重合した共重合体であり、前記共重合体Bがアクリロニトリル単位を93.5質量%〜97.8質量%、アクリロニトリル単位と共重合可能な不飽和単量体単位を2質量%〜5質量%及びスルホン酸基含有モノマー単位を0.2質量%〜1.5質量%が共重合した共重合体であることが好ましい。 In the method for producing acrylic fibers of the present invention, the copolymer A is 90% to 95% by mass of acrylonitrile units, and 5% to 10% by mass of unsaturated monomers copolymerizable with acrylonitrile units. The copolymer B is 93.5% by mass to 97.8% by mass of acrylonitrile units, 2% by mass to 5% by mass of unsaturated monomer units copolymerizable with the acrylonitrile units, and A copolymer in which 0.2% by mass to 1.5% by mass of a sulfonic acid group-containing monomer unit is copolymerized is preferable.
本発明のアクリル繊維の製造方法は、前記共重合体A及び前記共重合体B中のアクリロニトリル単位と共重合可能な不飽和単量体単位が酢酸ビニル単位であり、スルホン酸基含有モノマー単位がメタリルスルホン酸ソーダ単位であることが好ましい。 In the method for producing an acrylic fiber of the present invention, the unsaturated monomer unit copolymerizable with the acrylonitrile unit in the copolymer A and the copolymer B is a vinyl acetate unit, and the sulfonic acid group-containing monomer unit is It is preferably a sodium methallyl sulfonate unit.
本発明のアクリル繊維の製造方法は、紡糸原液A’と紡糸原液B’とをサイドバイサイド形状にノズルから紡糸浴に吐出して複合繊維を形成する工程と、3.0倍〜5.0倍の延伸倍率で1次延伸する工程と、90kPa〜230kPaの飽和水蒸気中で緩和熱処理する工程と、1.05倍〜1.20倍の延伸倍率で2次延伸処理を行う工程とを含むことが好ましい。 The method for producing an acrylic fiber of the present invention comprises a step of discharging a spinning stock solution A ′ and a spinning stock solution B ′ in a side-by-side shape from a nozzle to a spinning bath to form a composite fiber, and 3.0 times to 5.0 times. It is preferable to include a step of primary stretching at a stretching ratio, a step of relaxing heat treatment in saturated steam of 90 kPa to 230 kPa, and a step of performing a secondary stretching process at a stretching ratio of 1.05 to 1.20 times. .
本発明の紡績糸は、前記アクリル繊維を30質量%以上含んでいる。
本発明の紡績糸は、導電性アクリル繊維を3質量%〜15質量%含む紡績糸であることが好ましい。The spun yarn of the present invention contains 30% by mass or more of the acrylic fiber.
The spun yarn of the present invention is preferably a spun yarn containing 3% by mass to 15% by mass of conductive acrylic fiber.
本発明の編地は、前記紡績糸を50質量%以上含み、抗ピル性が4級以上である。
本発明の編地は、10回繰り返し洗濯後の寸法変化率が、タテ方向、ヨコ方向それぞれ±3%以内であることが好ましい。The knitted fabric of the present invention contains 50% by mass or more of the spun yarn and has an anti-pill property of 4th or higher.
The knitted fabric of the present invention preferably has a dimensional change rate after repeated washing of 10 times within ± 3% in each of the vertical and horizontal directions.
本発明のアクリル繊維は、抗ピル性、嵩高性、圧縮抵抗性、弾性に優れ、羊毛に類似した風合いを有するアクリル繊維である。このアクリル繊維を用いてなる衣料製品は、羊毛を使用した製品と同様の嵩高性、風合いを有し、抗ピル性やイージーケア性といった、本来羊毛が持つ欠点を補うことができる。 The acrylic fiber of the present invention is an acrylic fiber that is excellent in anti-pill property, bulkiness, compression resistance and elasticity, and has a texture similar to wool. Clothing products using this acrylic fiber have the same bulkiness and texture as products using wool, and can compensate for the disadvantages inherent in wool such as anti-pill properties and easy care properties.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明のアクリル繊維は、捲縮率が15%以上、嵩高性が380cm3 /g以上である。
捲縮率が15%以上であれば、製品に良好な嵩高性と反発性を付与することができる。前記観点から捲縮率は17%以上がより好ましく、20%以上がさらに好ましい。上限値は、製品の風合が硬くならない点から30%以下であることが好ましい。
嵩高性が380cm3 /g以上であれば、製品に良好な嵩高感や反発感を付与することができる。前記観点から嵩高性は440cm3 /g以上がより好ましい。上限値は、製品の風合が硬くならない点から600cm3 /g以下であることが好ましい。The acrylic fiber of the present invention has a crimp rate of 15% or more and a bulkiness of 380 cm 3 / g or more.
If the crimp rate is 15% or more, good bulkiness and resilience can be imparted to the product. From the above viewpoint, the crimp rate is more preferably 17% or more, and further preferably 20% or more. The upper limit is preferably 30% or less from the viewpoint that the texture of the product does not become hard.
If the bulkiness is 380 cm 3 / g or more, a good bulkiness and rebound can be imparted to the product. From the above viewpoint, the bulkiness is more preferably 440 cm 3 / g or more. The upper limit is preferably 600 cm 3 / g or less from the point that the texture of the product does not become hard.
本発明のアクリル繊維は、単繊維繊度が1.7dtex〜6.6dtex、結節強度(cN/dtex)と結節伸度(%)の積が10〜25であることが好ましい。
単繊維繊度が1.7dtex以上であれば、製品に良好な嵩高性と羊毛に類似した反発性を付与することができる。また、単繊維繊度が6.6dtex以下であることで、製品が固くなり粗剛な風合いとなることを防止できる。前記観点から、単繊維繊度は2.2dtex〜5.6dtexがより好ましい。
本発明のアクリル繊維は、結節強度(cN/dtex)×結節伸度(%)が10〜25の範囲であることが好ましく、15〜25がより好ましい。以下、本明細書において、結節強度(cN/dtex)を「DKS」、結節伸度(%)を「DKE」という場合がある。
DKS×DKEが10以上であれば、紡績等の後加工工程でのフライの発生、糸強力の低下等の問題が発生しにくくなる。また、DKS×DKEが25以下であれば、優れた抗ピル性を維持することができる。
DKS×DKEの値は、当業者が抗ピル性の指標として使用する値である。The acrylic fiber of the present invention preferably has a single fiber fineness of 1.7 to 6.6 dtex, and a product of nodule strength (cN / dtex) and nodule elongation (%) of 10 to 25.
If the single fiber fineness is 1.7 dtex or more, the product can be provided with good bulkiness and resilience similar to wool. Moreover, when the single fiber fineness is 6.6 dtex or less, it is possible to prevent the product from becoming hard and having a rough texture. From the above viewpoint, the single fiber fineness is more preferably 2.2 dtex to 5.6 dtex.
In the acrylic fiber of the present invention, the knot strength (cN / dtex) × the knot elongation (%) is preferably in the range of 10 to 25, and more preferably 15 to 25. Hereinafter, in this specification, the nodule strength (cN / dtex) may be referred to as “DKS” and the nodule elongation (%) may be referred to as “DKE”.
If DKS × DKE is 10 or more, problems such as the occurrence of fly in post-processing steps such as spinning and a decrease in yarn strength are unlikely to occur. Moreover, if DKS × DKE is 25 or less, excellent anti-pill properties can be maintained.
The value of DKS × DKE is a value used by those skilled in the art as an index of anti-pill property.
本発明のアクリル繊維は、捲縮数が20個/2.54cm〜50個/2.54cmであることが好ましく、25個/2.54cm〜45個/2.54cmがより好ましい。
前記捲縮率は20個/2.54cm以上であれば、弾力感、圧縮反発感、嵩高感を付与する点で好ましく、50個/2.54cm以下であれば、製品の風合いが固くなりすぎることを防止できる。The acrylic fiber of the present invention preferably has a number of crimps of 20 / 2.54 cm to 50 / 2.54 cm, and more preferably 25 / 2.54 cm to 45 / 2.54 cm.
If the crimp rate is 20 pieces / 2.54 cm or more, it is preferable in terms of imparting a feeling of elasticity, compression repulsion, and bulkiness, and if it is 50 pieces / 2.54 cm or less, the texture of the product becomes too hard. Can be prevented.
本発明のアクリル繊維は、アクリロニトリル単位を90質量%〜95質量%含有するアクリロニトリル系共重合体Aとアクリロニトリル単位を93.5質量%〜97.8質量%含有するアクリロニトリル系共重合体Bが、繊維軸方向の繊維断面における面積比で1:3〜3:1の割合で、サイドバイサイド型に複合されてなることが好ましい。
前記共重合体Aと前記共重合体Bとがサイドバイサイド型に複合されていると、微細捲縮が発現し、弾力性、捲縮率、嵩高性が高くなりやすい。
前記面積比が1:3〜3:1の割合であれば紡糸安定性を低下することなく、製品に良好な嵩高感や反発感を付与することができる。前記観点から前記面積比は、2:3〜3:2の割合がより好ましい。The acrylic fiber of the present invention comprises an acrylonitrile copolymer A containing 90% by mass to 95% by mass of acrylonitrile units and an acrylonitrile copolymer B containing 93.5% by mass to 97.8% by mass of acrylonitrile units. It is preferable to be compounded in a side-by-side manner at a ratio of 1: 3 to 3: 1 in the area ratio in the fiber cross section in the fiber axis direction.
When the copolymer A and the copolymer B are combined in a side-by-side manner, fine crimps are developed, and elasticity, crimp rate, and bulkiness tend to be high.
If the area ratio is from 1: 3 to 3: 1, a good bulkiness and resilience can be imparted to the product without lowering the spinning stability. From the above viewpoint, the area ratio is more preferably a ratio of 2: 3 to 3: 2.
本発明のアクリル繊維を紡糸した際は、前記共重合体Aと前記共重合体Bが繊維軸方向の繊維断面における面積比で1:3〜3:1の割合でサイドバイサイド型に複合されてなる繊維が、1つのノズルから吐出された繊維束中に80質量%以上含まれていることが好ましい。
サイドバイサイド型の複合繊維が80質量%以上含まれていることで、製品に良好な嵩高感や反発感を付与することができる。前記観点からサイドバイサイド型の複合繊維の含有率は90質量%以上であることがより好ましい。When the acrylic fiber of the present invention is spun, the copolymer A and the copolymer B are combined in a side-by-side manner at a ratio of 1: 3 to 3: 1 in the area ratio in the fiber cross section in the fiber axis direction. It is preferable that 80 mass% or more is contained in the fiber bundle discharged from one nozzle.
By including 80% by mass or more of the side-by-side type composite fiber, a good bulkiness and repulsion can be imparted to the product. From the above viewpoint, the content of the side-by-side type composite fiber is more preferably 90% by mass or more.
共重合体Aのアクリロニトリル単位の含有量が90質量%〜95質量%であることで、衣料用繊維として必要な繊維物性、とりわけ形態安定性を維持しながら、十分な収縮性を発揮することが可能となり好ましい。
共重合体Bのアクリロニトリル単位の含有量が93.5質量%〜97.8質量%であることで、共重合体Aとの収縮差が発現しやすく嵩高性と反発性を付与することが可能となり好ましい。When the content of the acrylonitrile unit in the copolymer A is 90% by mass to 95% by mass, sufficient shrinkage can be exhibited while maintaining the fiber properties necessary for the fiber for clothing, particularly the form stability. It is possible and preferable.
When the content of the acrylonitrile unit in the copolymer B is 93.5% by mass to 97.8% by mass, a difference in shrinkage from the copolymer A is easily exhibited, and it is possible to impart bulkiness and resilience. It is preferable.
本発明のアクリル繊維は、前記共重合体A中のアクリロニトリル単位の含有量(質量%)の値と前記重合体B中とのアクリロニトリル単位の含有量(質量%)の値の差が2以上であることが好ましい。
前記差が2以上であれば、微細捲縮が発現しやすく、捲縮率、嵩高性が高くなりやすい。
前記観点から前記差は3以上がより好ましい。In the acrylic fiber of the present invention, the difference between the content (mass%) of the acrylonitrile unit in the copolymer A and the content (mass%) of the acrylonitrile unit in the polymer B is 2 or more. Preferably there is.
If the difference is 2 or more, fine crimp is likely to occur, and the crimp rate and bulkiness are likely to be high.
From the above viewpoint, the difference is more preferably 3 or more.
本発明のアクリル繊維は、前記共重合体Aがアクリロニトリル単位を90質量%〜95質量%、アクリロニトリル単位と共重合可能な不飽和単量体単位を5質量%〜10質量%が共重合した共重合体であり、共重合体Bがアクリロニトリル単位を93.5質量%〜97.8質量%、アクリロニトリル単位と共重合可能な不飽和単量体単位を2質量%〜5質量%及びスルホン酸基含有モノマー単位を0.2質量%〜1.5質量%が共重合した共重合体であることが好ましい。 In the acrylic fiber of the present invention, the copolymer A is a copolymer obtained by copolymerizing 90% by mass to 95% by mass of acrylonitrile units and 5% by mass to 10% by mass of unsaturated monomer units copolymerizable with acrylonitrile units. A copolymer, wherein the copolymer B contains 93.5% by mass to 97.8% by mass of acrylonitrile units, 2% by mass to 5% by mass of unsaturated monomer units copolymerizable with acrylonitrile units, and sulfonic acid groups A copolymer obtained by copolymerizing 0.2% by mass to 1.5% by mass of the containing monomer unit is preferable.
一方の共重合体Bにスルホン酸基含有モノマー単位を0.2質量%〜1.5質量%共重合させることにより、共重合体Aと共重合体Bとの染着性の差が大きくなり過ぎず、濃淡色差によるチラツキの発生を防止する点で好ましい。 By copolymerizing one copolymer B with a sulfonic acid group-containing monomer unit in an amount of 0.2% by mass to 1.5% by mass, the difference in dyeability between the copolymer A and the copolymer B increases. However, it is preferable from the viewpoint of preventing the occurrence of flicker due to light and shade color differences.
アクリロニトリル単位と共重合可能な不飽和単量体単位としては、例えばアクリル酸、メタクリル酸及びこれらの誘導体、酢酸ビニル、アクリルアミド、メタクリルアミド、塩化ビニル、塩化ビニリデンなどを用いることができる。
中でも、酢酸ビニルが、入手しやすさとコストの点でより好ましい。As the unsaturated monomer unit copolymerizable with the acrylonitrile unit, for example, acrylic acid, methacrylic acid and derivatives thereof, vinyl acetate, acrylamide, methacrylamide, vinyl chloride, vinylidene chloride and the like can be used.
Among these, vinyl acetate is more preferable in terms of availability and cost.
スルホン酸基含有モノマー単位としては、例えばビニルベンゼンスルホン酸ソーダ、メタリルスルホン酸ソーダ、アクリルアミドメチルスルホン酸ソーダ、ソディウムパラスルホフェニルメタリルエーテルなどが挙げられる。
中でも、メタリルスルホン酸ソーダが、入手のしやすさとコストの点で好ましい。Examples of the sulfonic acid group-containing monomer unit include sodium vinylbenzene sulfonate, sodium methallyl sulfonate, sodium acrylamide methyl sulfonate, sodium parasulfophenyl methallyl ether, and the like.
Of these, sodium methallyl sulfonate is preferable in terms of availability and cost.
前記共重合体Aにおけるアクリロニトリル単位と共重合可能な不飽和単量体の含有率は5質量%〜10質量%の範囲にあればよい。含有率が5質量%以上であることで、十分な収縮性を維持することが可能であり、10質量%以下であることで衣料用繊維として必要な繊維物性、とりわけ形態安定性を維持することができる。 The content of the unsaturated monomer copolymerizable with the acrylonitrile unit in the copolymer A may be in the range of 5% by mass to 10% by mass. When the content is 5% by mass or more, sufficient shrinkage can be maintained, and when it is 10% by mass or less, the fiber physical properties necessary for the fiber for clothing, particularly the form stability, are maintained. Can do.
前記共重合体Bにおけるアクリロニトリル単位と共重合可能な不飽和単量体の含有率は2質量%〜5質量%の範囲にあればよい。この範囲にあることで、共重合体Aとの収縮性の差により、良好な嵩高性と反発性を付与することができる。また、スルホン酸基含有モノマー単位は0.2質量%〜1.5質量%の範囲にあればよい。スルホン酸基含有モノマー単位の含有率がこの範囲にあることで、重合体Aと重合体Bの染着性の差が大きくなり過ぎず、濃淡色差によるチラツキの発生を防止することができる。 The content of the unsaturated monomer copolymerizable with the acrylonitrile unit in the copolymer B may be in the range of 2% by mass to 5% by mass. By being in this range, good bulkiness and resilience can be imparted due to a difference in shrinkage from the copolymer A. The sulfonic acid group-containing monomer unit may be in the range of 0.2% by mass to 1.5% by mass. When the content of the sulfonic acid group-containing monomer unit is within this range, the difference in dyeing property between the polymer A and the polymer B does not become too large, and the occurrence of flicker due to the color difference can be prevented.
本発明のアクリル繊維は、2%〜7%の範囲で収縮していることが好ましい。収縮率が2%以上であれば、潜在している微細捲縮が発現して膨らみ感が得られ、収縮率が8%以下であれば、収縮後の風合いの硬化を防止することができる。前記収縮率は、4%〜7%が前記観点からより好ましい。
また、収縮率が比較的低いことから染色工程での制約が少なく、一般的な糸染め工程であるチーズ染色、綛染色はもちろんのこと、生地での反染めも容易に行うことができる。 The acrylic fiber of the present invention is preferably contracted in the range of 2% to 7%. If the shrinkage rate is 2% or more, latent fine crimps appear and a feeling of swelling is obtained, and if the shrinkage rate is 8% or less, hardening of the texture after shrinkage can be prevented. The shrinkage rate is more preferably 4% to 7% from the viewpoint.
In addition, since the shrinkage rate is relatively low, there are few restrictions in the dyeing process, and cheese dyeing and wrinkle dyeing, which are general yarn dyeing processes, as well as anti-dying on fabric can be easily performed.
なお、共重合体A及び共重合体Bの重合度は、その比粘度(重合体0.5グラムをジメチルホルムアミド100mLに溶解し、30℃で測定)が0.12〜0.21の範囲にあることが好ましい。また、その分子量は通常のアクリル繊維の製造に用いられる範囲であれば特に限定しないが、通常は10万〜100万の範囲であることが好ましい。 The polymerization degree of the copolymer A and the copolymer B is such that the specific viscosity (0.5 g of the polymer is dissolved in 100 mL of dimethylformamide and measured at 30 ° C.) is in the range of 0.12 to 0.21. Preferably there is. In addition, the molecular weight is not particularly limited as long as it is a range that can be used for production of a normal acrylic fiber, but it is usually preferably in the range of 100,000 to 1,000,000.
本発明のアクリル繊維は、例えば以下の方法により製造することができる。
共重合体A及び共重合体Bは、それぞれ通常のアクリル繊維紡糸に使用する溶剤、例えばジメチルアセトアミド、ジメチルホルムアミド、ジメチルスルホキシドなどに溶解し、固形分20質量%〜28質量%の紡糸原液とする。前記紡糸原液の粘度(JIS Z8803落球粘度法:測定温度50℃)は50〜500ポイズとすることが好ましい。固形分が20質量%以上であれば紡出性の悪化がなく、28質量%以下であれば紡糸原液の経時安定性不良による、紡糸性の低下を防ぐことができる。
このようにして得られた2種の紡糸原液を、本発明では紡糸ノズルより同時に吐出して複合繊維を製造する。複合紡糸方法は公知の方法から適宜選択すればよいが、サイドバイサイド型複合紡糸繊維とすることが好ましい。The acrylic fiber of the present invention can be produced, for example, by the following method.
Copolymer A and Copolymer B are each dissolved in a solvent used for normal acrylic fiber spinning, such as dimethylacetamide, dimethylformamide, dimethylsulfoxide, and the like, and used as a spinning dope having a solid content of 20% by mass to 28% by mass. . The spinning stock solution preferably has a viscosity (JIS Z8803 falling ball viscosity method: measuring temperature 50 ° C.) of 50 to 500 poise. If the solid content is 20% by mass or more, the spinnability is not deteriorated, and if it is 28% by mass or less, a decrease in spinnability due to poor temporal stability of the spinning dope can be prevented.
In the present invention, the two types of spinning dope thus obtained are simultaneously discharged from the spinning nozzle to produce a composite fiber. The composite spinning method may be appropriately selected from known methods, but is preferably a side-by-side type composite spinning fiber.
本発明のアクリル繊維は、上述したように2種の紡糸原液をサイドバイサイド型複合紡糸ノズルより、溶剤−水系湿式紡糸浴中に吐出凝固する。紡糸浴の溶剤濃度は35質量%〜60質量%の範囲が好ましく、40質量%〜55質量%がより好ましい。紡糸浴の溶剤濃度が35質量〜60質量%であれば、DKS×DKEが所望の範囲となり、良好な抗ピル性を得ることが可能である。また紡糸浴の温度は20℃〜45℃の範囲が好ましい。紡糸浴の温度が20℃以上であれば温度コントロールが比較的容易であり、50℃以下であれば、紡出時の作業性が保たれる。また紡糸浴の温度がこの範囲にあることで、DKS×DKEが所望の範囲となり、良好な抗ピル性を得ることが可能である。 As described above, the acrylic fiber of the present invention discharges and solidifies two kinds of spinning dope from a side-by-side type composite spinning nozzle into a solvent-water type wet spinning bath. The solvent concentration of the spinning bath is preferably in the range of 35% by mass to 60% by mass, more preferably 40% by mass to 55% by mass. When the solvent concentration of the spinning bath is 35 to 60% by mass, DKS × DKE is in a desired range, and good anti-pill properties can be obtained. The temperature of the spinning bath is preferably in the range of 20 ° C to 45 ° C. If the temperature of the spinning bath is 20 ° C. or higher, temperature control is relatively easy, and if it is 50 ° C. or lower, workability during spinning is maintained. Further, when the temperature of the spinning bath is within this range, DKS × DKE is in a desired range, and good anti-pilling properties can be obtained.
次いで、熱水中で3倍〜5倍の延伸倍率で1次延伸を行う。1次延伸倍率3倍以上であることで衣料用繊維として必要な強伸度を維持することが可能である。延伸倍率が5倍以下であることで、DKS×DKEが所望の範囲となり、良好なピル性を得ることが可能である。
前記延伸倍率は、4〜5倍がより好ましい。Next, primary stretching is performed in hot water at a stretching ratio of 3 to 5 times. When the primary draw ratio is 3 times or more, it is possible to maintain a high degree of elongation required as a fiber for clothing. When the draw ratio is 5 times or less, DKS × DKE is in a desired range, and good pill properties can be obtained.
The draw ratio is more preferably 4 to 5 times.
本発明の目的とする優れた捲縮特性と抗ピル性を有するアクリル繊維を得るためには、90kPa〜230kPa、好ましくは95kPa〜170kPaの飽和水蒸気中で緩和熱処理する必要がある。蒸気圧が90kPa以上であることで、良好な捲縮特性を得ることが可能となり、また染色性も安定する。蒸気圧が230kPa以下であることで、DKS×DKEが所望の範囲となり、良好な抗ピル性を得ることが可能である。 In order to obtain an acrylic fiber having excellent crimping properties and anti-pilling properties, which is the object of the present invention, it is necessary to perform a relaxation heat treatment in saturated steam of 90 kPa to 230 kPa, preferably 95 kPa to 170 kPa. When the vapor pressure is 90 kPa or more, good crimp characteristics can be obtained, and the dyeability is also stable. When the vapor pressure is 230 kPa or less, DKS × DKE is in a desired range, and good anti-pill properties can be obtained.
微細捲縮が顕在化した繊維は、捲縮が強く開繊性が悪いため、紡績工程でのトラブルが発生しやすい。このため、2次延伸により一旦微細捲縮を潜在化させる必要がある。本発明では2次延伸の延伸倍率は1.05倍〜1.20倍の範囲であればよく、好ましくは1.05倍〜1.10倍である。2次延伸倍率が1.05倍以上であることで、微細捲縮を潜在化させることが可能である。2次延伸倍率が1.20倍以下であることで、過剰な収縮を与えることがないため、寸法安定性の悪化や収縮後の風合い硬化を防止することが可能である。 A fiber in which fine crimps are manifested tends to cause troubles in the spinning process because of strong crimps and poor spreadability. For this reason, it is necessary to make the fine crimps latent once by secondary stretching. In the present invention, the stretching ratio of the secondary stretching may be in the range of 1.05 times to 1.20 times, preferably 1.05 times to 1.10 times. When the secondary draw ratio is 1.05 times or more, it is possible to make fine crimps latent. When the secondary stretching ratio is 1.20 times or less, excessive shrinkage is not given, and therefore it is possible to prevent deterioration of dimensional stability and texture hardening after shrinkage.
<紡績糸>
このようにして製造されたアクリル繊維を30質量%以上含む紡績糸にすると、染色等の熱処理により、潜在捲縮が顕在化しウールに近い風合になりやすい。また、本発明のアクリル繊維を30質量%以上含むことで、良好な抗ピル性が得られる。
前記アクリル繊維が100質量%であると、嵩高感と反発感に優れ、抗ピル性も良好な編地を得ることが可能である。<Spun yarn>
When a spun yarn containing 30% by mass or more of the acrylic fiber produced in this way is formed, latent crimps are manifested by heat treatment such as dyeing, and a texture close to that of wool is likely to occur. Moreover, favorable anti-pill property is acquired by including 30 mass% or more of acrylic fiber of this invention.
When the acrylic fiber is 100% by mass, it is possible to obtain a knitted fabric that is excellent in bulkiness and resilience and also has good pill resistance.
また、紡績糸において、前記アクリル繊維と混合できる繊維は、合成繊維、天然繊維など、特に限定されないが、抗ピル性を高めるためには、抗ピル性を有する合成繊維を混合することが好ましい。
紡績糸に天然繊維を混合する場合は、抗ピル性が低下するため、天然繊維の混合率は、70質量%以下にすることが好ましく、より好ましくは30質量%以下である。
本発明の紡績糸の糸番手は、毛番手で60番以下が好ましい。60番手以下であれば、紡績糸が細すぎず、嵩高性を得やすいため好ましい。In the spun yarn, fibers that can be mixed with the acrylic fibers are not particularly limited, such as synthetic fibers and natural fibers. However, in order to increase the anti-pill property, it is preferable to mix synthetic fibers having anti-pill property.
When natural fibers are mixed with the spun yarn, the anti-pill property is lowered. Therefore, the mixing ratio of natural fibers is preferably 70% by mass or less, and more preferably 30% by mass or less.
The yarn count of the spun yarn of the present invention is preferably a hair count of 60 or less. If it is 60th or less, it is preferable because the spun yarn is not too thin and it is easy to obtain bulkiness.
撚り係数は、70〜120が好ましい。70以上であれば、取扱いに問題のない紡績糸の強度が得られやすい。120以下であれば、嵩高性が得られやすく、編地の風合いが固くなり過ぎない。
撚り係数とは、糸番手から撚り数を決めるために、次の式の関係を満たすものである。 撚り数(回/m)=撚り係数×√(糸番手)
本発明の紡績糸は、導電性アクリル繊維を3質量%〜15質量%含むことが好ましい。上記範囲の導電性アクリル繊維を含むことで、製品の脱着時に静電気発生による不快感を抑えることができる。導電性アクリル繊維の含有率は、制電性能及びコストの点から、5質量%〜12質量%であることがより好ましい。As for a twist coefficient, 70-120 are preferable. If it is 70 or more, the strength of the spun yarn with no problem in handling is easily obtained. If it is 120 or less, the bulkiness is easily obtained, and the texture of the knitted fabric does not become too hard.
The twist coefficient satisfies the relationship of the following formula in order to determine the number of twists from the yarn count. Number of twists (times / m) = Twist factor x √ (yarn count)
The spun yarn of the present invention preferably contains 3% to 15% by mass of conductive acrylic fiber. By including the conductive acrylic fiber in the above range, it is possible to suppress discomfort due to the generation of static electricity when the product is detached. The content of the conductive acrylic fiber is more preferably 5% by mass to 12% by mass from the viewpoint of antistatic performance and cost.
<編地>
本発明の編地は、前記紡績糸を50質量%以上含む編地である。良好な抗ピル性、イージーケア性を維持するには、本発明の紡績糸を100%使いとすることが好ましいが、編地風合いや抗ピル性、イージーケア性を損なわない範囲で他の紡績糸と交編することも可能である。交編可能な紡績糸は天然繊維100%からなる紡績糸、合成繊維100%からなる紡績糸、天然繊維と合成繊維を混紡してなる紡績糸等、特に限定することはない。ウールに近い風合いと、4級以上の良好な抗ピル性、イージーケア性を得るためには、編地全体として本発明のアクリル繊維を30質量%以上含むことが好ましい。
また、10回繰り返し洗濯後の寸法変化率が、タテ方向、ヨコ方向でそれぞれ±3%以内である。
以下、実施例に基づいて本発明を具体的に説明する。<Knitted fabric>
The knitted fabric of the present invention is a knitted fabric containing 50% by mass or more of the spun yarn. In order to maintain good anti-pill properties and easy care properties, it is preferable to use the spun yarn of the present invention as 100%, but other spinning materials are used as long as the fabric texture, anti-pill properties and easy care properties are not impaired. It is also possible to knit with yarn. The spun yarn that can be knitted is not particularly limited, such as a spun yarn made of 100% natural fiber, a spun yarn made of 100% synthetic fiber, and a spun yarn made by mixing natural fiber and synthetic fiber. In order to obtain a texture close to wool and good antipilling and easy care properties of grade 4 or higher, the knitted fabric as a whole preferably contains 30% by mass or more of the acrylic fiber of the present invention.
In addition, the dimensional change rate after repeated washing 10 times is within ± 3% in each of the vertical and horizontal directions.
Hereinafter, the present invention will be specifically described based on examples.
アクリル繊維の物性等は以下の手法により測定した。
微細捲縮がまだ潜在化している場合は、前準備として沸騰水中で20分間弛緩熱処理して微細捲縮を顕在化したのち、水分率が3質量%以下になるまで風乾し、繊維同士の密着がなくなる程度に開繊する。
(単繊維繊度)
JIS L 1015の繊度(振動法)の測定方法に準じて測定した。なお、測定は50本行い、その平均値とした。The physical properties and the like of acrylic fiber were measured by the following method.
If microcrimps are still latent, after pre-preparation heat treatment for 20 minutes in boiling water reveals the microcrimps, air-dry until the moisture content is 3% by mass or less, and adhere fibers to each other Open to the extent that there is no more.
(Single fiber fineness)
It measured according to the measuring method of the fineness (vibration method) of JIS L1015. In addition, 50 measurements were performed and the average value was used.
(沸水収縮率)
JIS L 1015の熱水収縮率の測定方法に準じて測定した。なお、収縮処理は沸水中で行った。(Boiling water shrinkage)
It measured according to the measuring method of the hot-water shrinkage | contraction rate of JISL1015. The shrinkage treatment was performed in boiling water.
(嵩高性)
繊維同士の密着がなくなる程度に開繊したアクリル繊維1.5gを約0.15gずつに分けて、底面積33.17cm2 が1000mLのメスシリンダーに静かに落下させて、隙間が空かないように均一に充填し、6gの荷重用円盤をメスシリンダーの中に降下させる。2分後に、アクリル繊維が占める容積v(cm3 )を測定し、以下の式により嵩高性を算出する。
嵩高性(cm3 /g)=v÷1.5
なお、測定は3検体で行い、その平均値とする。(Bulky)
Split 1.5 g of acrylic fiber opened to such an extent that the fibers are no longer in close contact with each other, and gently drop it into a 1000 mL measuring cylinder with a bottom area of 33.17 cm 2 so that there is no gap. Fill uniformly and lower 6 g load disc into graduated cylinder. After 2 minutes, the volume v (cm 3 ) occupied by the acrylic fiber is measured, and the bulkiness is calculated by the following equation.
Bulkiness (cm 3 /g)=v÷1.5
The measurement is performed on three samples, and the average value is used.
(捲縮率)
JIS L1015(2010)の捲縮率の測定方法に準じて測定する。(Crimp rate)
It measures according to the measuring method of the crimp rate of JIS L1015 (2010).
(捲縮数)
JIS L1015(2010)の捲縮数の測定方法に準じて測定する。(Crimp number)
It measures according to the measuring method of the crimp number of JISL1015 (2010).
(結節強度と結節伸度の積(DKS×DKE))
結節強度はJIS L 1015(2010)の結節強さ(標準時試験)に準じて測定し、この時の伸び率を結節伸度とし、その積を算出した。(Product of nodule strength and nodule elongation (DKS x DKE))
The nodule strength was measured according to the nodule strength (standard time test) of JIS L 1015 (2010), and the product was calculated by using the elongation at this time as the nodule elongation.
(抗ピル性)
JIS L 1076(2012)のピリング試験A法(ICI型 5時間)に準じて測定し、試験後の生地外観により1〜5級に区分した。(Anti-pill property)
It measured according to the pilling test A method (ICI type | mold 5 hours) of JISL1076 (2012), and was classified into the 1st-5th grade by the fabric | texture appearance after a test.
(編地の寸法変化率)
30cm×30cmの生地の中央部に、一辺20cm正方形のマーキングをした試験片をJIS L 0217 103法(吊干し)による洗濯処理を10回繰返し、洗濯処理後の四角形の各辺の長さを測定し、以下の式より算出した。
タテ方向寸法変化率=(20−(洗濯処理後のタテ方向の2辺の長さ/2))/20×100(%)
ヨコ方向寸法変化率=(20−(洗濯処理後のヨコ方向の2辺の長さ/2))/20×100(%)(Dimension change rate of knitted fabric)
A test piece with a 20cm square marking on the center of a 30cm x 30cm fabric is repeatedly washed 10 times according to the JIS L 0217 103 method (hanging), and the length of each side of the square after the laundry treatment is measured. And calculated from the following equation.
Vertical dimension change rate = (20− (length of two sides in the warp direction after the washing process / 2)) / 20 × 100 (%)
Dimensional change rate in the horizontal direction = (20− (length of two sides in the horizontal direction after the washing process / 2)) / 20 × 100 (%)
(風合い)
10名の判定員により編地風合いを触感により判断した。
判定は以下の基準で行った。
[++] :判定員全員が羊毛と同等の嵩高性と反発性があり良好と判断。
[+] :5〜9名の判定員が良好と判断。
[−] :良好と判断した判定員が4名以下。(Texture)
The texture of the knitted fabric was judged by tactile sensation by 10 judges.
The determination was made according to the following criteria.
[++]: All judges were judged to have good bulkiness and resilience equivalent to wool.
[+]: 5 to 9 judges were judged to be good.
[-]: Four or fewer judges judged to be good.
〔実施例1〕
表1に示す共重合体Aと共重合体Bを、各々固形分濃度24質量%となるように溶剤のジメチルアセトアミド(DMAc)に溶解して紡糸原液を調製した。この紡糸原液を複合紡糸ノズルから共重合体A50質量%と共重合体B50質量%の比率でサイドバイサイド型に、ジメチルアセトアミド(DMAc)と水からなる、溶剤濃度55%、温度40℃の湿式紡糸浴中に吐出凝固させ、次いで熱水中で延伸倍率4.5倍で1次延伸した後、油剤を付着させ、150℃の乾熱ローラーで乾燥後、クリンプ付与した。得られた繊維束を蒸気圧160kPaの飽和水蒸気下で弛緩熱処理し、微細捲縮を顕在化させたのち、延伸倍率1.1倍の2次延伸により微細捲縮を一旦潜在化させ、再度紡績用のクリンプを付与した後、繊維長51mmにカットして、単繊維繊度が2.2dtexの繊維を得た。得られた繊維を用いて毛番手が1/30番手になるように紡績加工し、得られた紡績糸を用いて18G編み機にて筒編地を作製後、カチオン染料(保土谷化学製:カチロンブルーCDRLH)で染色した。
得られた結果を表1に示す。[Example 1]
Copolymer A and Copolymer B shown in Table 1 were each dissolved in dimethylacetamide (DMAc) as a solvent so as to have a solid content concentration of 24% by mass to prepare a spinning dope. This spinning dope is made from a composite spinning nozzle into a side-by-side ratio of 50% by mass of copolymer A and 50% by mass of copolymer B, and is a wet spinning bath composed of dimethylacetamide (DMAc) and water at a solvent concentration of 55% and temperature of 40 ° C. Then, the mixture was discharged and solidified, and then primary stretched in hot water at a stretch ratio of 4.5 times, and then an oil agent was adhered, dried with a dry heat roller at 150 ° C., and then crimped. The obtained fiber bundle was subjected to relaxation heat treatment under saturated steam with a vapor pressure of 160 kPa to reveal the fine crimps, and then the micro-crimps were made latent once by secondary stretching with a draw ratio of 1.1 times, and spinning was performed again. After applying the crimp for use, the fiber length was cut to 51 mm to obtain a fiber having a single fiber fineness of 2.2 dtex. Using the obtained fiber, spinning was performed so that the hair count was 1/30, and after producing a tubular knitted fabric with an 18G knitting machine using the obtained spun yarn, a cationic dye (made by Hodogaya Chemical Co., Ltd .: Catillon Blue) CDRLH).
The obtained results are shown in Table 1.
〔実施例2〕
溶剤濃度、紡糸浴温度、単繊維繊度を表1に示す通りに変更した以外は、実施例1と同様にして繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を作製した後染色した。得られた結果を表1に示す。[Example 2]
Fibers were obtained in the same manner as in Example 1 except that the solvent concentration, spinning bath temperature, and single fiber fineness were changed as shown in Table 1. The obtained fiber was spun and processed in the same manner as in Example 1 to produce a tubular knitted fabric and then dyed. The obtained results are shown in Table 1.
〔実施例3〕
共重合体Aの組成と単繊維繊度を表1に示す通りに変更した以外は、実施例1と同様にして繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を作製した後染色した。得られた結果を表1に示す。Example 3
A fiber was obtained in the same manner as in Example 1 except that the composition of the copolymer A and the single fiber fineness were changed as shown in Table 1. The obtained fiber was spun and processed in the same manner as in Example 1 to produce a tubular knitted fabric and then dyed. The obtained results are shown in Table 1.
〔比較例1〕
実施例3で用いた共重合体Aだけを用いた以外は、実施例3と同様にして繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を作製した後染色した。得られた結果を表1に示す。[Comparative Example 1]
A fiber was obtained in the same manner as in Example 3 except that only the copolymer A used in Example 3 was used. The obtained fiber was spun and processed in the same manner as in Example 1 to produce a tubular knitted fabric and then dyed. The obtained results are shown in Table 1.
〔比較例2〕
実施例1の共重合体Bだけを用い、溶剤濃度を30質量%にした以外は実施例1と同様にして繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を作製した後染色した。得られた結果を表1に示す。[Comparative Example 2]
A fiber was obtained in the same manner as in Example 1 except that only the copolymer B of Example 1 was used and the solvent concentration was changed to 30% by mass. The obtained fiber was spun and processed in the same manner as in Example 1 to produce a tubular knitted fabric and then dyed. The obtained results are shown in Table 1.
〔比較例3〕
実施例1で用いた2種類の共重合体Aおよび共重合体Bを、紡糸原液の状態で均一混合した後、紡糸ノズルから吐出凝固し、異種ポリマー複合アクリル繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を作製した後染色した。得られた結果を表1に示す。[Comparative Example 3]
The two types of copolymer A and copolymer B used in Example 1 were uniformly mixed in the state of a spinning stock solution, and then discharged and solidified from a spinning nozzle to obtain a heterogeneous polymer composite acrylic fiber. The obtained fiber was spun and processed in the same manner as in Example 1 to produce a tubular knitted fabric and then dyed. The obtained results are shown in Table 1.
〔比較例4〕
溶剤濃度を表1に示す通りに変更した以外は、実施例1と同様にして繊維を得た。得られた繊維は実施例1と同様に紡績加工し、筒編地を編成した後染色した。得られた結果を表1に示す。
なお、比較例4は先行技術文献4(特開昭59−192717号公報)に記載の発明に相当する条件である。[Comparative Example 4]
A fiber was obtained in the same manner as in Example 1 except that the solvent concentration was changed as shown in Table 1. The obtained fiber was spun and processed in the same manner as in Example 1, and after knitting a tubular knitted fabric, it was dyed. The obtained results are shown in Table 1.
Comparative Example 4 is a condition corresponding to the invention described in Prior Art Document 4 (Japanese Patent Laid-Open No. 59-192717).
〔実施例4〕
実施例1で得られたアクリル繊維70質量%と、ウール(66’s)30質量%とを混紡して、毛番手が1/30番手の紡績糸を得た。得られた紡績糸をチーズ染色機で100℃×30分の沸水処理を行った後、該紡績糸を2本引き揃えて、12G横編み機を用いて編地を作製した。
得られた編地は羊毛に似た風合いを有しており、洗濯による寸法変化も少なく、抗ピル性も4.0級と良好であった。結果を表2に示した。Example 4
70% by mass of the acrylic fiber obtained in Example 1 and 30% by mass of wool (66 ′s) were blended to obtain a spun yarn having a hair count of 1/30. The obtained spun yarn was subjected to boiling water treatment at 100 ° C. for 30 minutes with a cheese dyeing machine, and then two spun yarns were aligned and a knitted fabric was produced using a 12G flat knitting machine.
The resulting knitted fabric had a texture similar to wool, had little dimensional change due to washing, and had good anti-pill properties of 4.0 grade. The results are shown in Table 2.
〔実施例5〕
実施例1で得られたアクリル繊維40質量%と、単繊維繊度2.2dtexの抗ピル性アクリル繊維(品番:H616、三菱レイヨン社製)30質量%と、ウール(66’s)30質量%とを混紡して、毛番手が1/30番手の紡績糸を得た。得られた紡績糸を実施例4と同様にチーズ染色機で沸水処理を行った後、12G横編み機を用いて編地を作製した。
得られた編地は、表2に示すように羊毛に似た風合いを有しており、洗濯による寸法変化も少なく、抗ピル性も4.5級と良好であった。結果を表2に示した。Example 5
40% by mass of the acrylic fiber obtained in Example 1, 30% by mass of anti-pill acrylic fiber (part number: H616, manufactured by Mitsubishi Rayon Co., Ltd.) having a single fiber fineness of 2.2 dtex, and 30% by mass of wool (66's) To obtain a spun yarn with a hair count of 1/30. The obtained spun yarn was subjected to boiling water treatment with a cheese dyeing machine in the same manner as in Example 4, and then a knitted fabric was produced using a 12G flat knitting machine.
The obtained knitted fabric had a texture similar to wool as shown in Table 2, there was little dimensional change due to washing, and the anti-pill property was as good as 4.5 grade. The results are shown in Table 2.
〔実施例6〕
実施例1で得られたアクリル繊維90質量%と、単繊維繊度3.3dtexの導電性アクリル繊維(品番TB10、三菱レイヨン社製)10質量%とを混紡して、毛番手が1/30番手の紡績糸を得た。得られた紡績糸を実施例4と同様チーズ染色機で沸水処理を行った後、12G横編み機を用いて編地を作製した。
得られた編地は羊毛に似た風合いを有しており、表2に示すように洗濯による寸法変化も少なく、抗ピル性も4.5級と良好であった。結果を表2に示した。Example 6
90% by mass of the acrylic fiber obtained in Example 1 and 10% by mass of conductive acrylic fiber having a single fiber fineness of 3.3 dtex (product number TB10, manufactured by Mitsubishi Rayon Co., Ltd.) were blended, and the hair count was 1/30. Of spun yarn. The obtained spun yarn was subjected to boiling water treatment with a cheese dyeing machine as in Example 4, and then a knitted fabric was produced using a 12G flat knitting machine.
The obtained knitted fabric had a texture similar to wool, and as shown in Table 2, there was little dimensional change due to washing, and the anti-pill property was as good as 4.5 grade. The results are shown in Table 2.
〔比較例5〕
ウール(66’s)100%で毛番手が1/30番手の紡績糸を得た。得られた紡績糸を実施例4と同様にチーズ染色機で沸水処理を行った後、2本引き揃えて、12G横編み機を用いて編地を作製した。
得られた編地は嵩高感と反発感に優れているものの、表2に示すように洗濯による寸法変化が大きく、抗ピル性が2級と劣るものであった。結果を表2に示した。[Comparative Example 5]
A spun yarn with 100% wool (66's) and 1/30 count hair was obtained. The obtained spun yarn was subjected to boiling water treatment using a cheese dyeing machine in the same manner as in Example 4, and then two yarns were aligned and a knitted fabric was produced using a 12G flat knitting machine.
Although the obtained knitted fabric was excellent in bulkiness and resilience, as shown in Table 2, the dimensional change caused by washing was large, and the anti-pill property was inferior to the second grade. The results are shown in Table 2.
本発明のアクリル繊維は、優れた捲縮特性と抗ピル性を有しており、例えば、セーター、ジャケット等の衣料品や手芸糸などに有用である。 The acrylic fiber of the present invention has excellent crimp characteristics and anti-pilling properties, and is useful for clothing items such as sweaters and jackets, and handicraft yarns.
Claims (15)
(嵩高性の測定方法)
(1)51mmに切断したアクリル繊維約10gを採取し、繊維同士の密着がなくなる程度に開繊する。
(2)前記開繊したアクリル繊維1.5gを分取する。
(3)約0.15gずつに分けて、底面積が33.17cm2 の1000mLメスシリンダーに静かに落下させて、隙間が空かないように均一に充填する。
(4)6gの荷重用円盤をメスシリンダーの中に降下させ、2分後に、アクリル繊維が占める容積vcm3 を測定する。
(5)次式により嵩高性を算出する。
嵩高性(cm3 /g)=v÷1.5
なお、測定は3検体について行い、それらの平均値を結果とする。 The single fiber fineness is 1.7 to 6.6 dtex, the crimp rate measured according to JIS L1015 (2010) is 15% or more, and the bulkiness measured by the following method is 380 cm 3 / g or more. An acrylonitrile copolymer A containing 90% by mass to 95% by mass of acrylonitrile units and an acrylonitrile copolymer B containing 93.5% by mass to 97.8% by mass of acrylonitrile units in the fiber axis direction. An acrylic fiber that is composited in a side-by-side manner at an area ratio of 1: 3 to 3: 1 in the fiber cross section .
(Bulkness measuring method)
(1) Collect about 10 g of acrylic fiber cut to 51 mm and open it to such an extent that the fibers do not adhere to each other.
(2) Fractionate 1.5 g of the opened acrylic fiber.
(3) Divide into approximately 0.15 g portions, gently drop into a 1000 mL graduated cylinder with a bottom area of 33.17 cm 2 and fill evenly so that there is no gap.
(4) A 6 g load disk is lowered into the measuring cylinder, and after 2 minutes, the volume vcm 3 occupied by the acrylic fiber is measured.
(5) Bulkiness is calculated by the following equation .
Bulkiness (cm 3 /g)=v÷1.5
In addition, measurement is performed on three specimens, and the average value thereof is taken as the result.
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CN109023579B (en) * | 2017-06-08 | 2020-12-29 | 中国石油化工股份有限公司 | High-pull-out-strength building reinforced polyacrylonitrile chopped fiber and preparation method and application thereof |
JP7068651B2 (en) | 2017-06-22 | 2022-05-17 | 日本エクスラン工業株式会社 | Flat acrylonitrile fiber with three-dimensional crimp and pile fabric using the fiber |
CN107675346A (en) * | 2017-10-31 | 2018-02-09 | 宿迁市神龙家纺有限公司 | A kind of one side metallized thread embossing warp knit wool felt and preparation method thereof |
CN111350082B (en) * | 2020-04-23 | 2022-09-02 | 潮州市乐欣服装有限公司 | Anti-pilling knitted fabric and preparation method thereof |
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JPS5468417A (en) * | 1977-11-07 | 1979-06-01 | Mitsubishi Rayon Co Ltd | Acrylonitrile synthetic fibers and their production |
JPS55112316A (en) * | 1978-11-30 | 1980-08-29 | Rhone Poulenc Textile | Two component blended acryl composite fiber and yarn |
JPH10266019A (en) * | 1997-03-26 | 1998-10-06 | Mitsubishi Rayon Co Ltd | Water-sensitive acrylic conjugate fiber having pill resistance and its production |
JP2004044026A (en) * | 2002-07-12 | 2004-02-12 | Mitsubishi Rayon Co Ltd | Acrylonitrile-based filament and method for producing the same |
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BE788423A (en) * | 1971-09-16 | 1973-01-02 | Snam Progetti | TWO-COMPONENT CONTINUOUS ACRYLIC FIBER INFLATED YARNS AND ITS MANUFACTURING METHOD |
DE2348679C3 (en) * | 1973-09-27 | 1982-03-25 | Bayer Ag, 5090 Leverkusen | Composite fibers and composite fiber yarns made from two different acrylonitrile polymers and their use |
JPS52103525A (en) * | 1976-02-24 | 1977-08-30 | Toray Ind Inc | Antistatic polyacrylonitrile fiber with no humidity dependency |
US4347203A (en) * | 1979-05-30 | 1982-08-31 | Mitsubishi Rayon Company, Ltd. | Process for producing acrylic fiber |
JPH10237721A (en) * | 1997-02-24 | 1998-09-08 | Mitsubishi Rayon Co Ltd | Highly shrinkable acrylic fiber and raw stock for pile |
CN101929001A (en) * | 2009-08-24 | 2010-12-29 | 江苏鹰翔化纤股份有限公司 | Collateral fiber of PET (Polyethylene Terephthalate) and PBS (Poly Butylenes Succinate) |
-
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- 2015-04-28 EP EP15786320.0A patent/EP3138940A4/en not_active Withdrawn
- 2015-04-28 CN CN201580022144.XA patent/CN106460242A/en active Pending
- 2015-04-28 US US15/307,053 patent/US20170044693A1/en not_active Abandoned
- 2015-04-28 WO PCT/JP2015/062863 patent/WO2015166956A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5468417A (en) * | 1977-11-07 | 1979-06-01 | Mitsubishi Rayon Co Ltd | Acrylonitrile synthetic fibers and their production |
JPS55112316A (en) * | 1978-11-30 | 1980-08-29 | Rhone Poulenc Textile | Two component blended acryl composite fiber and yarn |
JPH10266019A (en) * | 1997-03-26 | 1998-10-06 | Mitsubishi Rayon Co Ltd | Water-sensitive acrylic conjugate fiber having pill resistance and its production |
JP2004044026A (en) * | 2002-07-12 | 2004-02-12 | Mitsubishi Rayon Co Ltd | Acrylonitrile-based filament and method for producing the same |
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US20170044693A1 (en) | 2017-02-16 |
EP3138940A1 (en) | 2017-03-08 |
WO2015166956A1 (en) | 2015-11-05 |
JPWO2015166956A1 (en) | 2017-04-20 |
CN106460242A (en) | 2017-02-22 |
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