JP2003013325A - Cellulose acetate fiber - Google Patents
Cellulose acetate fiberInfo
- Publication number
- JP2003013325A JP2003013325A JP2001198033A JP2001198033A JP2003013325A JP 2003013325 A JP2003013325 A JP 2003013325A JP 2001198033 A JP2001198033 A JP 2001198033A JP 2001198033 A JP2001198033 A JP 2001198033A JP 2003013325 A JP2003013325 A JP 2003013325A
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- Prior art keywords
- fiber
- cellulose acetate
- acetate fiber
- cross
- dyeing
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高光沢で染色安定
性に優れたセルロースアセテート繊維に関する。TECHNICAL FIELD The present invention relates to a cellulose acetate fiber having high gloss and excellent dyeing stability.
【０００２】[0002]
【従来の技術】セルロースアセテート繊維は、主として
優れた発色性・ドライで清涼感のある感触・豊かなドレ
ープ性などにその特徴がある高級衣料素材として位置づ
けられている。これらのアセテート繊維の持つ独特の特
徴は、その固有の屈折率や、乾式紡糸による断面形状や
糸物性によるところが大きく、春夏物の婦人衣料として
好適素材である。2. Description of the Related Art Cellulose acetate fibers are regarded as a high-grade clothing material mainly characterized by excellent color development, dry and refreshing feel, and rich drapability. The peculiar features of these acetate fibers are largely due to their peculiar refractive index, cross-sectional shape by dry spinning, and yarn physical properties, and are suitable materials for women's clothing for spring and summer.
【０００３】通常、セルロースアセテート繊維は、紡糸
孔が円形である紡糸紡糸口金から乾式紡糸により得られ
るが、近年では特開平１１−２５６４２２号公報に開示
されているように正五角形〜正七角形の紡糸孔を有する
紡糸口金によりドライ感とドレープ性を兼ね備えたアセ
テート繊維が開示されている。この方法に示されるよう
に、糸の断面形状のヒダ数はドレープ性ドライ感、光沢
感に大きく影響を及ぼし布帛の風合いや染色性及び色合
いに深く関与する重要な因子である。Cellulose acetate fibers are usually obtained by dry spinning from a spinneret having a circular spinning hole. In recent years, as disclosed in JP-A-11-256422, regular pentagonal to regular heptagonal spinning is performed. An acetate fiber having a dry feeling and a drape property by a spinneret having holes is disclosed. As shown in this method, the number of folds in the cross-sectional shape of the yarn has a great influence on the drapeability, dryness and glossiness, and is an important factor deeply involved in the texture, dyeability and color of the fabric.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の円形の
紡糸孔から乾式紡糸で得られるセルロースアセテート繊
維では、形成される凸部の数が１０個程度であるため、
光沢が不十分となる。また、凸部の形成開始位置が不特
定であることから、糸断面の凸部の数が不安定となり、
さらに長期間の連続生産においては、凸部の数や糸断面
の形態が経時的に変化するため、光沢が変化し染色安定
性も十分ではなかった。However, in the cellulose acetate fiber obtained by dry spinning from the conventional circular spinning hole, the number of convex portions formed is about 10, so that
The gloss is insufficient. Further, since the formation start position of the convex portion is unspecified, the number of convex portions in the yarn cross section becomes unstable,
Furthermore, in continuous production over a long period of time, the number of convex portions and the morphology of the yarn cross section change with time, resulting in a change in gloss and insufficient dyeing stability.
【０００５】また、特開平１１−２５６４２２号公報に
開示されているセルロースアセテート繊維では、凸部の
形成が正多角形の頂点及び辺により制御されるが、形成
される凸部の数は５〜７程度であり、高光沢を得るため
に充分な凸部の形成は困難で、光沢安定性に優れる凹凸
部の形成が困難であった。さらに、従来の円形の紡糸孔
から得られるセルロースアセテート繊維に比べ張り腰が
強く、硬い風合いとなりやすかった。Further, in the cellulose acetate fiber disclosed in Japanese Patent Laid-Open No. 11-256422, the formation of convex portions is controlled by the vertices and sides of a regular polygon, but the number of convex portions formed is 5 to 5. It was about 7, and it was difficult to form a convex portion sufficient to obtain high gloss, and it was difficult to form an uneven portion having excellent gloss stability. Furthermore, compared with the conventional cellulose acetate fiber obtained from a circular spinning hole, it has a stronger tenacity and tends to have a hard texture.
【０００６】本発明は、このような従来の技術における
問題点を解決し、高光沢で染色安定性に優れ、従来と同
様の風合いが得られるセルロースアセテート繊維を提供
することを目的としている。An object of the present invention is to solve the above problems in the prior art, and to provide a cellulose acetate fiber having high gloss, excellent dyeing stability, and a texture similar to the conventional one.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨は、繊維軸
に垂直方向の断面形状が、２０以上の凸部を有するセル
ロースアセテート繊維にある。SUMMARY OF THE INVENTION The gist of the present invention is a cellulose acetate fiber having a cross-sectional shape perpendicular to the fiber axis having 20 or more convex portions.
【０００８】[0008]
【発明の実施の形態】本発明のセルロースアセテート繊
維は、繊維軸に垂直方向の断面形状が、２０以上の凸部
を有することが必要である。本発明でいう凸部とは、対
象となるセルロースアセテート繊維の繊維軸に垂直方向
の断面を、走査型電子顕微鏡を用いて３０００倍の倍率
で写真撮影し、繊維の内部方向に対して極小点となる部
分を結んでできる多角形の外側に突出している部分を凸
部とする。BEST MODE FOR CARRYING OUT THE INVENTION The cellulose acetate fiber of the present invention is required to have a projection having a cross-sectional shape perpendicular to the fiber axis of 20 or more. The convex portion in the present invention means a cross section of the target cellulose acetate fiber in a direction perpendicular to the fiber axis, photographed at a magnification of 3000 times using a scanning electron microscope, and has a local minimum point with respect to the inner direction of the fiber. The portion protruding outside the polygon formed by connecting the portions to be defined as the convex portion.
【０００９】従来にない高光沢を得るためには、該凸部
の数は２０以上必要であり、２４〜３５の範囲がより好
ましい。In order to obtain an unprecedentedly high gloss, the number of the convex portions must be 20 or more, and the range of 24 to 35 is more preferable.
【００１０】また本発明では、光沢値が４０以上である
ことが好ましく、光沢値が４０未満では本発明の目的と
する従来にない光沢が得られない。Further, in the present invention, it is preferable that the gloss value is 40 or more, and if the gloss value is less than 40, the unprecedented gloss which is the object of the present invention cannot be obtained.
【００１１】尚、光沢の測定は、日本電色工業（株）製
のＶＧＳ−３００Ａを用い、光源ランプとして、５Ｖハ
ロゲンランプ、測定投光受光角度として４５度(投光受
光角度に合った指定スリットを設定)にて、試料測定投
光幅１０ｍｍ×２２ｍｍでサンプルのパーンを測定し
た。The gloss is measured using VGS-300A manufactured by Nippon Denshoku Industries Co., Ltd., a light source lamp is a 5V halogen lamp, and a measurement projection / reception angle is 45 degrees (specified according to the projection / reception angle). The slit of the sample was used to measure the sample pan with a sample measurement projection width of 10 mm × 22 mm.
【００１２】次に本発明のセルロースアセテート繊維の
製造方法の一例を示す。Next, an example of the method for producing the cellulose acetate fiber of the present invention will be described.
【００１３】本発明のセルロースアセテート繊維は、酢
化度５６．２〜６２．５の紡糸原液を紡糸温度７２℃の
条件で、１４〜５０個の頂点を有する正多角形の各頂点
において、図１に示すような、下記（１）〜（３）を同
時に満足する四角形ａｂｃｄを除いた形状の紡糸孔が環
状に配列した乾式紡糸用紡糸口金を用いて乾式紡糸する
ことにより得られる。The cellulose acetate fiber of the present invention is prepared by spinning a stock solution having an acetylation degree of 56.2 to 62.5 at a spinning temperature of 72 ° C. at each vertex of a regular polygon having 14 to 50 vertices. It is obtained by dry spinning using a spinneret for dry spinning in which spinning holes having a shape excluding a quadrangle abcd satisfying the following (1) to (3) at the same time as shown in 1 are annularly arranged.
【００１４】（１）Ｌ×０．１≦ａｂ≦Ｌ×０．４
（２）Ｌ×０．１≦ｂｃ≦Ｌ×０．４
（３）ｂｃ＝ｃｄ
（ａ：正多角形の頂点。ｂ、ｄ：正多角形一辺上の点。
ｃ：正多角形の頂点ａと正多角形の中心を結ぶ直線上の
点。Ｌ：正多角形一辺の長さ。）(1) L × 0.1 ≦ ab ≦ L × 0.4 (2) L × 0.1 ≦ bc ≦ L × 0.4 (3) bc = cd (a: vertex of regular polygon) b, d: Points on one side of the regular polygon.
c: A point on a straight line connecting the vertex a of the regular polygon and the center of the regular polygon. L: Length of one side of regular polygon. )
【００１５】[0015]
【実施例】以下、実施例をあげて本発明を説明する。ま
た、評価は次に示す方法で行った。尚、比較例１で得ら
れたサンプルを従来糸として、各項目の比較を行った。EXAMPLES The present invention will be described below with reference to examples. The evaluation was performed by the method shown below. Each item was compared using the sample obtained in Comparative Example 1 as a conventional yarn.
【００１６】（風合い） 得られたサンプルを、編み立
て機（シングルジャージー）を用いて筒編みを実施し、
触感で風合いを評価した。(Handle) The obtained sample is tubular knitted by using a knitting machine (single jersey),
The texture was evaluated by touch.
【００１７】（染色差） 筒編みサンプルを、染料Ｔｅ
ｒｅｔｏｐ−ｂｌｕｅ ＧＬＦ（共和産業（株）製）、
分散剤ディスパーＴＬ（明成化学工業（株）製）を用い
て定法で染色した。染色の条件としては、染料３％ｏｗ
ｆ、分散剤０．５ｍｌ／ｌの濃度条件にて染色をおこな
った。また、染色級数評価については、ＪＩＳ規格にあ
る染色堅牢度試験方法（ＪＩＳ Ｌ０８０１）において
使用される変退色グレースケール（ＪＩＳ Ｌ０８０
４）を用いて評価した。その時の染色変化が変退色の判
定基準で５級である場合を本染色級数判定の５級とし、
変退色の判定基準で４−５級である場合を本染色級数判
定の４．５級とし、変退色の判定基準で４級である場合
を本染色級数判定の４級とし、変退色の判定基準で３−
４級、３級、２−３級、２級、１−２級、１級である場
合を本染色級数判定の３級とした。(Dyeing Difference) A tubular knit sample was dyed with Te.
retop-blue GLF (manufactured by Kyowa Sangyo Co., Ltd.),
The dispersant Disper TL (manufactured by Meisei Chemical Industry Co., Ltd.) was used for dyeing in a conventional manner. The dyeing conditions are as follows: dye 3% ow
f, the dispersant was dyed under the concentration condition of 0.5 ml / l. Regarding the evaluation of the dyeing series, the discolored and faded gray scale (JIS L080) used in the dyeing fastness test method (JIS L0801) in JIS standard.
It evaluated using 4). If the change in dyeing at that time is grade 5 according to the criteria of discoloration and fading, it is grade 5 of this dyeing series determination,
If the grade 4-5 of the discoloration / fading criterion is the main dyeing series, the grade 4.5 is used, and if the grade 4 is the discoloring / discoloring criterion, the main dyeing series 4 is the grade. 3-by standard
The cases of 4th grade, 3rd grade, 2-3rd grade, 2nd grade, 1-2nd grade and 1st grade were regarded as the 3rd grade of this dyeing series judgment.
【００１８】（実施例１） 酢化度６１．５のセルロー
スアセテートを塩化メチレン及びメタノールの混合溶液
に濃度２２．０％で溶解した紡糸原液を、２４個の頂点
を有し一辺の長さ１０．５μの正多角形の各頂点におい
て、下記（１）〜（３）を同時に満足する四角形ａｂｃ
ｄを除いた形状の紡糸孔が環状に２０個配列した乾式紡
糸用紡糸口金を用いて乾式紡糸を行い、インターレース
による交絡数が３０個/ｍ、８４ｄｔｅｘ／２０ｆのマ
ルチフィラメント糸を得た。(Example 1) A spinning dope prepared by dissolving cellulose acetate having an acetylation degree of 61.5 in a mixed solution of methylene chloride and methanol at a concentration of 22.0% had 24 apexes and a side length of 10 A quadrangle abc that simultaneously satisfies the following (1) to (3) at each vertex of a regular polygon of 0.5 μ
Dry spinning was performed using a spinneret for dry spinning in which 20 spinning holes having a shape excluding d were arranged annularly to obtain a multifilament yarn having an interlacing number of 30 / m and 84 dtex / 20f by interlacing.
【００１９】（１）ａｂ＝Ｌ×０．１９
（２）ｂｃ＝Ｌ×０．１９
（３）ｂｃ＝ｃｄ
（ａ：正多角形の頂点。ｂ、ｄ：正多角形の一辺上の
点。ｃ：正多角形の頂点ａと正多角形の中心ｏを結ぶ直
線上の点。Ｌ：正多角形の一辺の長さ。）得られた繊維
の繊維軸に垂直方向の断面は２０〜２４個の凸部を有し
ていた。その形状の一例を図２に示す。光沢値は４２．
８で、従来の円形の紡糸孔から得られる繊維の光沢値に
比べ優れているものであった。また、風合いは従来糸と
の差はなく、染色級数は５級であり従来糸と染色差はな
かった。(1) ab = L × 0.19 (2) bc = L × 0.19 (3) bc = cd (a: vertex of regular polygon; b, d: point on one side of regular polygon) C: a point on a straight line connecting the vertex a of the regular polygon and the center o of the regular polygon L: the length of one side of the regular polygon) The cross section of the obtained fiber in the direction perpendicular to the fiber axis is 20 to It had 24 protrusions. An example of the shape is shown in FIG. The gloss value is 42.
The value of 8 was superior to the gloss value of the fiber obtained from the conventional circular spinning hole. In addition, the texture was not different from that of the conventional yarn, and the dyeing grade was 5, which was not different from that of the conventional yarn.
【００２０】（実施例２） ３０個の頂点を有し一辺の
長さ８．４μの正多角形の各頂点において、下記（１）
〜（３）を同時に満足する四角形ａｂｃｄを除いた形状
の紡糸孔を有する乾式紡糸用紡糸口金をいる以外は、実
施例１と同様の条件で乾式紡糸を行った。(Embodiment 2) At each vertex of a regular polygon having 30 vertices and having a side length of 8.4 μ, the following (1)
Dry spinning was performed under the same conditions as in Example 1, except that a spinneret for dry spinning having a spinning hole having a shape excluding the quadrangle abcd that simultaneously satisfies (3) to (3) was used.
【００２１】（１）ａｂ＝Ｌ×０．２３
（２）ｂｃ＝Ｌ×０．２３
（３）ｂｃ＝ｃｄ
得られた繊維の繊維軸に垂直方向の断面は２６〜３２個
の凸部を有していた。光沢値は４３．５で、従来の円形
の紡糸孔から得られる繊維の光沢値に比べ優れているも
のであった。また、風合いは従来糸との差はなく、染色
級数は５級であり従来糸と染色差はなかった。(1) ab = L × 0.23 (2) bc = L × 0.23 (3) bc = cd The cross section of the obtained fiber in the direction perpendicular to the fiber axis has 26 to 32 convex portions. Had. The gloss value was 43.5, which was superior to that of the fiber obtained from the conventional circular spinning hole. In addition, the texture was not different from that of the conventional yarn, and the dyeing grade was 5, which was not different from that of the conventional yarn.
【００２２】（実施例３） ５０個の頂点を有し一辺の
長さ５．０４μの正多角形の各頂点において、下記
（１）〜（３）を同時に満足する四角形ａｂｃｄを除い
た形状の紡糸孔を有する乾式紡糸用紡糸口金をいる以外
は、実施例１と同様の条件で乾式紡糸を行った。(Embodiment 3) Each of the vertices of a regular polygon having 50 vertices and a side length of 5.04 μ has a shape excluding a quadrangle abcd that simultaneously satisfies the following (1) to (3). Dry spinning was performed under the same conditions as in Example 1 except that a spinneret for dry spinning having spinning holes was provided.
【００２３】（１）ａｂ＝Ｌ×０．２４
（２）ｂｃ＝Ｌ×０．２４
（３）ｂｃ＝ｃｄ
得られた繊維の繊維軸に垂直方向の断面は３５〜４５個
の凸部を有していた。光沢値は４５．５で、従来の円形
の紡糸孔から得られる繊維の光沢値に比べ優れているも
のであった。また、風合いは従来糸との差はなく、染色
級数は５級であり従来糸と染色差はなかった。(1) ab = L × 0.24 (2) bc = L × 0.24 (3) bc = cd The cross section of the obtained fiber perpendicular to the fiber axis has 35 to 45 convex portions. Had. The gloss value was 45.5, which was superior to that of the fiber obtained from the conventional circular spinning hole. In addition, the texture was not different from that of the conventional yarn, and the dyeing grade was 5, which was not different from that of the conventional yarn.
【００２４】（比較例１） 直径４０μの円形紡糸孔を
有する乾式紡糸用紡糸口金をいる以外は、実施例１と同
様の条件で乾式紡糸を行った。得られた繊維の繊維軸に
垂直方向の断面は７〜１３個の凸部を有していた。その
形状の一例を図３に示す。光沢値は３５．６であった。Comparative Example 1 Dry spinning was carried out under the same conditions as in Example 1 except that a spinneret for dry spinning having a circular spinning hole of 40 μ in diameter was used. The cross section of the obtained fiber in the direction perpendicular to the fiber axis had 7 to 13 convex portions. An example of the shape is shown in FIG. The gloss value was 35.6.
【００２５】（比較例２） 一辺の長さが４０μの正６
角形の紡糸孔を有する乾式紡糸用紡糸口金をいる以外
は、実施例１と同様の条件で乾式紡糸を行った。得られ
た繊維の繊維軸に垂直方向の断面は５〜６個の凸部を有
していた。その形状の一例を図４に示す。光沢値は３
８．９で、従来の円形の紡糸孔から得られる繊維の光沢
値に比べやや光沢のあるものとなったが、風合いは従来
糸に比べドライ感、張り感の強いものとなった。染色級
数は４級であり従来糸に比べ淡染となった。(Comparative Example 2) A regular 6 having a side length of 40 μm
Dry spinning was performed under the same conditions as in Example 1 except that a spinneret for dry spinning having square spin holes was used. The cross section of the obtained fiber in the direction perpendicular to the fiber axis had 5 to 6 convex portions. An example of the shape is shown in FIG. Gloss value is 3
At 8.9, the fiber was slightly glossy as compared with the gloss value of the fiber obtained from the conventional circular spinning hole, but the texture was more dry and tighter than the conventional yarn. The number of dyeing classes is 4, which is lighter than conventional yarns.
【００２６】（比較例３） 一辺の長さが２４．７μの
正１０角形の紡糸孔を有する乾式紡糸用紡糸口金をいる
以外は、実施例１と同様の条件で乾式紡糸を行った。得
られた繊維の繊維軸に垂直方向の断面は９〜１０個の凸
部を有していた。その形状の一例を図５に示す。光沢値
は３９．７で、従来の円形の紡糸孔から得られる繊維の
光沢値に比べ向上したが、風合いは従来糸に比べドライ
感、軽量感のあるものとなった。染色級数は４．５級で
あり従来糸に比べ淡染となった。Comparative Example 3 Dry spinning was carried out under the same conditions as in Example 1 except that a spinneret for dry spinning having a regular decagonal spinning hole with a side length of 24.7 μ was used. The cross section of the obtained fiber in the direction perpendicular to the fiber axis had 9 to 10 protrusions. An example of the shape is shown in FIG. The gloss value was 39.7, which was improved compared to the gloss value of the fiber obtained from the conventional circular spinning hole, but the texture was dry and lighter than the conventional yarn. The dyeing class was 4.5, which was lighter than the conventional yarn.
【００２７】[0027]
【発明の効果】本発明のセルロースアセテート繊維は、
繊維軸に垂直方向の断面形状が、２０以上の凸部を有す
ることにより、高光沢で染色安定性に優れ、従来糸と同
様の風合いが得られる。The cellulose acetate fiber of the present invention is
When the cross-sectional shape in the direction perpendicular to the fiber axis has 20 or more convex portions, it has high gloss and excellent dyeing stability, and the same texture as conventional yarns can be obtained.
【図１】本発明に使用する紡糸孔の一部の一例図であ
る。FIG. 1 is an example view of a part of a spinning hole used in the present invention.
【図２】セルロースアセテート繊維の繊維軸に垂直方向
の断面の一例図である。FIG. 2 is an example view of a cross section of a cellulose acetate fiber in a direction perpendicular to a fiber axis.
【図３】セルロースアセテート繊維の繊維軸に垂直方向
の断面の一例図である。FIG. 3 is an example of a cross section of a cellulose acetate fiber in a direction perpendicular to the fiber axis.
【図４】セルロースアセテート繊維の繊維軸に垂直方向
の断面の一例図である。FIG. 4 is an example of a cross section of a cellulose acetate fiber in a direction perpendicular to the fiber axis.
【図５】セルロースアセテート繊維の繊維軸に垂直方向
の断面の一例図である。FIG. 5 is an example of a cross section of a cellulose acetate fiber in a direction perpendicular to the fiber axis.
ａ：正多角形の頂点
ｂ：正多角形の一辺上の点
ｃ：正多角形の頂点ａと正多角形の中心ｏを結ぶ直線上
の点
ｄ：正多角形の一辺上の点
ｏ：正多角形の中心a: vertex of regular polygon b: point on one side of regular polygon c: point on straight line connecting vertex a of regular polygon and center o of regular polygon d: point o on one side of regular polygon: Center of regular polygon
Claims (2)
上の凸部を有するセルロースアセテート繊維。1. A cellulose acetate fiber having 20 or more protrusions in a cross-sectional shape perpendicular to the fiber axis.
セルロースアセテート繊維。2. The cellulose acetate fiber according to claim 1, which has a gloss value of 40 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001198033A JP2003013325A (en) | 2001-06-29 | 2001-06-29 | Cellulose acetate fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001198033A JP2003013325A (en) | 2001-06-29 | 2001-06-29 | Cellulose acetate fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003013325A true JP2003013325A (en) | 2003-01-15 |
Family
ID=19035544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001198033A Pending JP2003013325A (en) | 2001-06-29 | 2001-06-29 | Cellulose acetate fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003013325A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162920A (en) * | 2010-02-12 | 2011-08-25 | Mitsubishi Rayon Co Ltd | Production method for cellulose acetate fiber excellent in gloss stability |
| JP2012071296A (en) * | 2010-08-31 | 2012-04-12 | Swing Corp | Dehydration aid for sludge, method and apparatus for dehydrating sludge |
-
2001
- 2001-06-29 JP JP2001198033A patent/JP2003013325A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011162920A (en) * | 2010-02-12 | 2011-08-25 | Mitsubishi Rayon Co Ltd | Production method for cellulose acetate fiber excellent in gloss stability |
| JP2012071296A (en) * | 2010-08-31 | 2012-04-12 | Swing Corp | Dehydration aid for sludge, method and apparatus for dehydrating sludge |
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