JPH0931745A - Acrylic continuous filament having new feeling and its production - Google Patents

Acrylic continuous filament having new feeling and its production

Info

Publication number
JPH0931745A
JPH0931745A JP7176499A JP17649995A JPH0931745A JP H0931745 A JPH0931745 A JP H0931745A JP 7176499 A JP7176499 A JP 7176499A JP 17649995 A JP17649995 A JP 17649995A JP H0931745 A JPH0931745 A JP H0931745A
Authority
JP
Japan
Prior art keywords
acrylic
spinning
continuous filaments
dry
curvature
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.)
Pending
Application number
JP7176499A
Other languages
Japanese (ja)
Inventor
Hiroaki Onishi
宏明 大西
Yasuo Yanagi
康夫 柳
Yoshitaka Doi
義孝 土居
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP7176499A priority Critical patent/JPH0931745A/en
Publication of JPH0931745A publication Critical patent/JPH0931745A/en
Pending legal-status Critical Current

Links

Landscapes

  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain acrylic continuous filaments having a prescribed radius of curvature and new feeling of high crispness and dry touch by spinning acrylic continuous filaments having hollow cross sections by a dry jet-wet spinning in using specific spinning spinnerets and slitting by a false-twisting. SOLUTION: Acrylic continuous filaments having hollow cross sections are obtained by a dry jet-wet spinning in using spinning spinnerets having spinning holes comprising plural arc-shaped slit holes 1 arranged at suitable intervals on a concentric circle. The continuous filaments are slitted by a false-twisting to obtain the objective acrylic continuous filaments having arc-shaped bent flat cross sections having four corners and having <=1μm radius of curvature of at least one corner.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は新規な風合いを有するア
クリル長繊維、及びその製造方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acrylic filament having a novel texture and a method for producing the same.

【0002】[0002]

【従来の技術】従来、アクリル長繊維は、工業的に生産
性を上げる必要から200m/分から1500m/分の
紡糸速度にて生産されている。このようなアクリル長繊
維では、高速な生産をするため、乾湿式紡糸法や凝固速
度の遅い無機系溶剤による湿式紡糸法が採用されてい
る。そのため繊維の断面形状は丸断面、もしくは異型断
面にても角のないなめらかな曲線で構成されることとな
る。このような角のない滑らかな曲線にて構成された断
面形状では単繊維同士の間での滑りが起こり難く、シャ
リ感やドライタッチの風合いを得ることは困難であっ
た。
2. Description of the Related Art Conventionally, acrylic long fibers have been produced at a spinning speed of 200 m / min to 1500 m / min in order to industrially improve productivity. In order to produce such acrylic long fibers at a high speed, a dry-wet spinning method and a wet spinning method using an inorganic solvent having a slow solidification rate are adopted. Therefore, the cross-sectional shape of the fiber will be a smooth curve with no corners even if it has a round cross-section or a modified cross-section. With the cross-sectional shape formed by such smooth curves without corners, slippage between single fibers is unlikely to occur, and it is difficult to obtain a crisp feeling and a dry touch texture.

【0003】[0003]

【発明が解決しようとする課題】本発明の目的とすると
ころは、繊維断面に角を有し、シャリ感やドライタッチ
に富む新規な風合いを有するアクリル長繊維およびその
製造方法を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide an acrylic continuous fiber having a corner in the fiber cross section and a novel texture rich in sharpness and dry touch, and a method for producing the same. is there.

【0004】[0004]

【課題を解決するための手段】本発明の第1の要旨は、
4つの角をもつ円弧状に屈曲した扁平な断面形状を有
し、少なくとも1つの角の曲率半径が1μm以下である
アクリル長繊維であり、第2の要旨は、同心円上に間隔
を置いて配置された複数の円弧状スリット孔よりなる紡
糸孔を有する紡糸口金を用いて乾湿式紡糸法により紡糸
した中空断面を有するアクリル長繊維を仮撚加工により
割繊することを特徴とする上記アクリル長繊維の製造方
法にある。
A first gist of the present invention is as follows.
An acrylic filament having a flat cross-sectional shape that is bent in an arc shape having four corners, and at least one corner has a radius of curvature of 1 μm or less. The second gist is to arrange the concentric circles at intervals. Characterized in that acrylic long fibers having a hollow cross-section spun by a dry-wet spinning method using a spinneret having spinning holes consisting of a plurality of arc-shaped slit holes are split by false twisting. In the manufacturing method.

【0005】[0005]

【発明の実施の形態】本発明のアクリル系長繊維を構成
するアクリロニトリル系重合体は、アクリロニトリルの
ホモポリマーであってもよいし、アクリロニトリルと共
重合するビニル系単量体を40重量%を限度として共重
合したアクリロニトリル系共重合体であってもよい。
BEST MODE FOR CARRYING OUT THE INVENTION The acrylonitrile-based polymer constituting the acrylic long fiber of the present invention may be a homopolymer of acrylonitrile, and the vinyl-based monomer copolymerized with acrylonitrile is limited to 40% by weight. It may be an acrylonitrile-based copolymer.

【0006】共重合可能なビニル単量体としては、メチ
ル(メタ)アクリレート、エチル(メタ)アクリレー
ト、プロピル(メタ)アクリレート、ブチル(メタ)ア
クリレート、ヘキシル(メタ)アクリレート等の(メ
タ)アクリル酸エステル類、塩化ビニル、臭化ビニル、
塩化ビニリデン等のハロゲン化ビニル類、(メタ)アク
リル酸、イタコン酸、クロトン酸等の酸類およびそれら
の塩類、マレイン酸イミド、フェニルマレイミド、(メ
タ)アクリルアミド、スチレン、α−メチルスチレン、
酢酸ビニルなどが挙げられる。
The copolymerizable vinyl monomer includes (meth) acrylic acid such as methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate and hexyl (meth) acrylate. Esters, vinyl chloride, vinyl bromide,
Vinyl halides such as vinylidene chloride, acids such as (meth) acrylic acid, itaconic acid, crotonic acid and salts thereof, maleic imide, phenylmaleimide, (meth) acrylamide, styrene, α-methylstyrene,
Examples thereof include vinyl acetate.

【0007】上記のアクリロニトリル系重合体は、水系
懸濁重合、乳化重合、溶液重合など公知のいずれの方法
でも重合することが可能であるが、未反応モノマーが少
なく紡糸の際に未反応モノマーが凝固浴を汚染しない水
系懸濁重合、乳化重合が好ましく、連続生産が可能で生
産効率の高い水系懸濁重合方式がさらに好ましい。
The above-mentioned acrylonitrile polymer can be polymerized by any known method such as aqueous suspension polymerization, emulsion polymerization and solution polymerization, but the amount of unreacted monomer is small and unreacted monomer is unreacted during spinning. Aqueous suspension polymerization and emulsion polymerization that do not contaminate the coagulation bath are preferable, and an aqueous suspension polymerization method that enables continuous production and has high production efficiency is more preferable.

【0008】本発明のアクリル長繊維は、4つの角をも
つ円弧状に屈曲した扁平な断面形状を有し、少なくとも
1つの角の曲率半径が1μm以下であることが本発明の
新規風合いを得るために必要である。すべての角の曲率
半径が1μmを越えると、フィラメント間での滑りが起
こり難く、シャリ感やドライタッチを得ることは困難と
なる。よりシャリ感やドライタッチを得るには3つ以上
の角の曲率半径が1μm以下であることが望ましい。
The acrylic long fiber of the present invention has a flat cross-sectional shape bent in an arc shape having four corners, and at least one corner has a radius of curvature of 1 μm or less to obtain the novel texture of the present invention. Is necessary for. When the radius of curvature of all corners exceeds 1 μm, slippage between filaments is unlikely to occur, and it becomes difficult to obtain a crisp feeling or dry touch. In order to obtain a sharper feeling and a dry touch, it is desirable that the radius of curvature of three or more corners be 1 μm or less.

【0009】つぎに本発明の新規風合いを有するアクリ
ル長繊維の製造方法について説明する。本発明の新規風
合いを有するアクリル長繊維の製造方法は、まず中空断
面を有するアクリル長繊維を紡糸した後、仮撚加工を施
し、中空断面を割繊することが必要である。
Next, a method for producing an acrylic long fiber having a novel texture of the present invention will be described. In the method for producing an acrylic continuous fiber having a novel texture of the present invention, it is necessary to first spin an acrylic continuous fiber having a hollow cross section, then perform false twisting to split the hollow cross section.

【0010】本発明の製造方法において、紡糸原液は、
上述のアクリロニトリル系重合体を公知の洗浄、脱水、
乾燥工程を経由して、これを溶解する溶媒に溶解して得
ることができる。アクリロニトリル系共重合体を溶解す
る溶媒としては、ジメチルホルムアミド、ジメチルアセ
トアミド、ジメチルスルホキシド、硝酸水溶液、ロダン
塩水溶液、塩化亜鉛水溶液などの溶剤が例示できる。
In the production method of the present invention, the spinning solution is
Known washing, dehydration of the acrylonitrile-based polymer described above,
It can be obtained by dissolving it in a solvent that dissolves it via a drying step. Examples of the solvent that dissolves the acrylonitrile-based copolymer include solvents such as dimethylformamide, dimethylacetamide, dimethylsulfoxide, nitric acid aqueous solution, rhodanate salt aqueous solution, and zinc chloride aqueous solution.

【0011】中空断面を有するアクリル系長繊維を得る
には、図1に示すように同心円上に適宜間隔を置いて配
置された複数の円弧状スリット孔よりなる紡糸孔を有す
る紡糸口金を用いて乾湿式紡糸法により紡糸することが
必要である。紡糸口金と凝固液面の間隔を3〜11mm
に保つことで中空断面が得やすくなる。3mm未満の場
合は、凝固液面の揺れにより紡糸口金が凝固液に浸かり
糸が切れやすく、逆に、11mmを越えると紡糸原液の
流動により中空部が崩れて丸断面となりやすい。
In order to obtain an acrylic long fiber having a hollow cross section, a spinneret having a spinning hole composed of a plurality of arcuate slit holes arranged at appropriate intervals on a concentric circle is used as shown in FIG. It is necessary to spin by a dry-wet spinning method. The space between the spinneret and the surface of the coagulating liquid is 3 to 11 mm.
By keeping it at, it becomes easy to obtain a hollow cross section. If it is less than 3 mm, the spinneret is soaked in the coagulating liquid due to the shaking of the coagulating liquid surface, and the yarn is easily broken. On the contrary, if it exceeds 11 mm, the hollow portion is liable to collapse due to the flow of the spinning dope, resulting in a round cross section.

【0012】紡浴内で凝固した糸条は、引き続き、洗
浄、延伸、油剤付与、乾燥、(必要に応じて乾熱延
伸、)収縮緩和工程を経て、中空断面を有するアクリル
長繊維となる。
The yarn coagulated in the spinning bath is subsequently subjected to washing, drawing, application of an oil agent, drying, and (if necessary, dry heat drawing) shrinkage relaxation process to become acrylic long fibers having a hollow cross section.

【0013】それぞれの工程、すなわち、洗浄工程では
50〜100℃の温水中で溶剤分を1重量%以下とす
る、延伸工程は80〜100℃の湿熱状態で2倍以上の
延伸、乾燥工程は120〜180℃で行う、収縮緩和工
程においては220〜280℃の温度にて3〜15%の
収縮緩和を行うのが好ましい。
In each step, that is, in the washing step, the solvent content is 1% by weight or less in warm water of 50 to 100 ° C. The stretching step is twice or more in the wet heat state of 80 to 100 ° C., and the drying step is In the shrinkage relaxation step performed at 120 to 180 ° C, it is preferable to perform shrinkage relaxation of 3 to 15% at a temperature of 220 to 280 ° C.

【0014】このように得られた中空断面を有するアク
リル長繊維を割繊するための仮撚加工は、次の条件にて
仮撚加工することが好ましい。給糸スピードおよびオー
バーフィード率は特に限定されないが、ヒーター温度は
150〜220℃が望ましい。150℃未満では仮撚時
に毛羽立ち、220℃よりも高い温度では糸の融着が発
生する。撚数は1500〜2500T/mが望ましい。
1500T/m以下では中空断面を割繊することができ
ず目的とする風合いが得られない。また2500T/m
よりも多いと毛羽立ちが激しくなる。
The false twisting process for splitting the acrylic long fibers having a hollow cross section obtained in this way is preferably performed under the following conditions. The yarn feeding speed and the overfeed rate are not particularly limited, but the heater temperature is preferably 150 to 220 ° C. If the temperature is lower than 150 ° C, fluffing occurs during false twisting, and if the temperature is higher than 220 ° C, fusion of the yarn occurs. The twist number is preferably 1500 to 2500 T / m.
If it is 1500 T / m or less, the hollow cross section cannot be split and the desired texture cannot be obtained. Also 2500 T / m
If it is more than the above, fluffing will be severe.

【0015】[0015]

【実施例】以下に実施例を挙げて本発明を具体的に説明
する。 (実施例1)アクリロニトリル93重量%、酢酸ビニル
6.5重量%及びメタリルスルホン酸ソーダ0.5重量
%からなる共重合体をジメチルアセトアミドに溶解し、
アクリロニトリル系共重合体濃度が25%の紡糸原液を
調製した。
EXAMPLES The present invention will be specifically described below with reference to examples. (Example 1) A copolymer of 93% by weight of acrylonitrile, 6.5% by weight of vinyl acetate and 0.5% by weight of sodium methallyl sulfonate was dissolved in dimethylacetamide,
A spinning dope having an acrylonitrile copolymer concentration of 25% was prepared.

【0016】この紡糸原液を60℃に保温し、図2に示
した孔を30個有する紡糸口金より該口金と凝固液面の
間隔を7mmに保ち、ジメチルアセトアミド70重量
%、水30重量%からなる35℃の凝固浴へ乾湿式紡糸
し、糸条形成後凝固浴から50m/分の速度で引き取
り、60℃の温水で洗浄処理し、フィラメント中の残存
ジメチルアセトアミドを0.1%とした後、95℃の熱
水中で3倍に延伸し、ついで油剤を均一に付与し、14
0℃の加熱ロールで乾燥処理し、200℃の熱ピンで2
倍の乾熱延伸を行い、260℃の熱板にて5%の収縮緩
和を行い、150デニール/30フィラメントの中空断
面を有するアクリル長繊維を得た。
This spinning dope was kept at 60 ° C., the spinneret having 30 holes shown in FIG. 2 was used to keep the distance between the spinneret and the coagulating liquid surface at 7 mm, and from 70% by weight of dimethylacetamide and 30% by weight of water. After dry-wet spinning into a coagulation bath of 35 ° C., taking out from the coagulation bath at a speed of 50 m / min after forming the yarn, and washing with warm water of 60 ° C. to make residual dimethylacetamide in the filament 0.1% , Stretched 3 times in hot water at 95 ° C, and then uniformly applying an oil agent,
Dry with a heating roll at 0 ° C, and 2 with a hot pin at 200 ° C.
Double dry heat drawing was performed, and 5% shrinkage relaxation was performed with a hot plate at 260 ° C. to obtain an acrylic continuous fiber having a hollow cross section of 150 denier / 30 filaments.

【0017】この中空断面を有するアクリル長繊維をヒ
ーター温度180℃、撚数1800T/m、オーバーフ
ィード率5%、巻き取り速度80m/分にて仮撚加工を
行い、中空断面を4分割したアクリル長繊維を得た。
This acrylic long fiber having a hollow cross section was subjected to false twisting at a heater temperature of 180 ° C., a twist number of 1800 T / m, an overfeed rate of 5%, and a winding speed of 80 m / min. Long fibers were obtained.

【0018】このアクリル長繊維の顕微鏡写真により観
察すると、4つの角部の曲率半径がそれぞれ1、0.
7、0.3、0.4μmであった。
Observing the acrylic filaments with a micrograph, the radii of curvature of the four corners are 1, 0.
It was 7, 0.3, 0.4 μm.

【0019】このアクリル長繊維を8ゲージの筒編み機
を用い製編し、風合いを評価したところシャリ感が強く
ドライタッチな風合いが得られた。
When this acrylic long fiber was knitted using an 8-gauge cylinder knitting machine and the texture was evaluated, a sharp feel and a dry-touch texture were obtained.

【0020】(比較例1)直径0.1mmの丸孔を30
個有する紡糸口金を用いた紡糸口金を用いた他は実施例
1と同様に紡糸し、150デニール/30フィラメント
の丸型断面を有するアクリル長繊維を得た。このアクリ
ル長繊維を実施例1と同様の条件で仮撚加工を行った
が、割繊はされなかった。この仮撚加工を施したアクリ
ル長繊維を製編したところ、ソフト感にてヌメリ感があ
った。
(Comparative Example 1) 30 round holes each having a diameter of 0.1 mm were prepared.
Spinning was performed in the same manner as in Example 1 except that a spinneret having a plurality of spinnerets was used to obtain an acrylic continuous fiber having a round cross section of 150 denier / 30 filaments. This acrylic long fiber was false twisted under the same conditions as in Example 1, but was not split. When this acrylic long fiber subjected to false twisting was knitted, it had a soft and slimy feel.

【0021】[0021]

【発明の効果】本発明によれば、シャリ感が強くドライ
タッチな新規風合いを有するアクリル長繊維が得られ
る。
EFFECTS OF THE INVENTION According to the present invention, it is possible to obtain an acrylic long fiber having a novel texture with a sharp feeling and a dry touch.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のアクリル長繊維を製造するために用い
る紡糸口金の紡糸孔の形状を示す概念図である。
FIG. 1 is a conceptual diagram showing a shape of a spinning hole of a spinneret used for producing an acrylic continuous fiber of the present invention.

【符号の説明】[Explanation of symbols]

1 円弧状スリット孔 1 Arc-shaped slit hole

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 4つの角をもつ円弧状に屈曲した扁平な
断面形状を有し、少なくとも1つの角の曲率半径が1μ
m以下であるアクリル長繊維。
1. A flat cross-sectional shape bent into an arc having four corners, and at least one corner has a radius of curvature of 1 μm.
Acrylic filaments having a length of m or less.
【請求項2】 同心円上に適宜間隔を置いて配置された
複数の円弧状スリット孔よりなる紡糸孔を有する紡糸口
金を用いて乾湿式紡糸法により紡糸した中空断面を有す
るアクリル長繊維を仮撚加工により割繊することを特徴
とする請求項1記載のアクリル長繊維の製造方法。
2. An acrylic long fiber having a hollow cross section, which is spun by a dry-wet spinning method, using a spinneret having a plurality of arcuate slit holes arranged at appropriate intervals on a concentric circle and false twisted. The method for producing an acrylic long fiber according to claim 1, wherein splitting is performed by processing.
JP7176499A 1995-07-12 1995-07-12 Acrylic continuous filament having new feeling and its production Pending JPH0931745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7176499A JPH0931745A (en) 1995-07-12 1995-07-12 Acrylic continuous filament having new feeling and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7176499A JPH0931745A (en) 1995-07-12 1995-07-12 Acrylic continuous filament having new feeling and its production

Publications (1)

Publication Number Publication Date
JPH0931745A true JPH0931745A (en) 1997-02-04

Family

ID=16014724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7176499A Pending JPH0931745A (en) 1995-07-12 1995-07-12 Acrylic continuous filament having new feeling and its production

Country Status (1)

Country Link
JP (1) JPH0931745A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113122939A (en) * 2021-03-19 2021-07-16 江苏永银化纤有限公司 Preparation method of regenerated hollow yarn with moisture absorption and breathability and spinneret plate for production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113122939A (en) * 2021-03-19 2021-07-16 江苏永银化纤有限公司 Preparation method of regenerated hollow yarn with moisture absorption and breathability and spinneret plate for production

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