JP2001207323A - Highly shrinkable hollow fiber - Google Patents
Highly shrinkable hollow fiberInfo
- Publication number
- JP2001207323A JP2001207323A JP2000015621A JP2000015621A JP2001207323A JP 2001207323 A JP2001207323 A JP 2001207323A JP 2000015621 A JP2000015621 A JP 2000015621A JP 2000015621 A JP2000015621 A JP 2000015621A JP 2001207323 A JP2001207323 A JP 2001207323A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- hollow
- cross
- hollow fiber
- shrinkable
- 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
Links
Landscapes
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、熱処理を施した際
の収縮率が高く、かつ中空部が潰れにくく、高密度織物
を得るのに好適で、特に、厚地織物としても軽量性に優
れている高密度織物を得ることができる高収縮性中空繊
維に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for obtaining a high-density woven fabric having a high shrinkage rate when subjected to a heat treatment and hardly crushing a hollow portion. The present invention relates to a high-shrinkable hollow fiber capable of obtaining a high-density woven fabric.
【0002】[0002]
【従来の技術】近年、高密度織物の開発において、熱処
理によって高い収縮を示す高収縮性の繊維が求められて
いる。このような高収縮性繊維及び高収縮性繊維を芯糸
として用いた異収縮混繊糸を製織し、この織物に熱処理
を施すと、高収縮性の繊維が収縮することによって、経
糸と緯糸の目が詰まり、適度なハリ、コシと反発感など
を有する風合いの良好な布帛を得ることができる。2. Description of the Related Art In recent years, in the development of high-density woven fabrics, there has been a demand for highly shrinkable fibers that exhibit high shrinkage due to heat treatment. When weaving such a high shrinkage fiber and a different shrinkage blended yarn using the high shrinkage fiber as a core yarn and subjecting the woven fabric to heat treatment, the high shrinkage fiber shrinks, and the warp and the weft are formed. It is possible to obtain a fabric with a good texture, which has clogged eyes and has appropriate firmness, firmness and resilience.
【0003】このような高収縮性の繊維は、ポリアミ
ド、ポリエステルのフィラメントを中心に多く提案され
ている。中でも、ポリアミドを主成分とする高収縮性繊
維は柔らかい風合いを有していて、特開平3−64516号公
報記載の、熱水収縮率が15%以上である高収縮性のナイ
ロン繊維等に示されるように、良好な風合いを持つ布帛
を得ることができる。[0003] Many of such highly shrinkable fibers have been proposed mainly for polyamide and polyester filaments. Among them, high-shrinkable fibers containing polyamide as a main component have a soft texture, and are described in, for example, high-shrinkable nylon fibers having a hot water shrinkage of 15% or more described in JP-A-3-64516. As described above, a fabric having a good texture can be obtained.
【0004】しかしながら、これらの繊維を用いた織物
や編物は、熱処理によって高密度になるため、厚地の織
物にすると繊維が重く、硬くなるという欠点がある。こ
のため、高収縮性繊維を細繊度にして薄い布帛とし、柔
軟性を持たせたり、あるいは単糸繊度が細く、フィラメ
ント数の多い繊維と混繊する等の対策が取られている
が、やはり高密度で厚地の布帛としたときには軽量性が
損なわれるという問題があった。[0004] However, woven fabrics and knitted fabrics using these fibers have a drawback that the fibers are heavy and hard when made into a thick fabric because the density is increased by heat treatment. For this reason, high shrinkage fiber is made into a fine fabric with a fineness and a thin fabric, and a measure is taken such as giving flexibility or blending with a fiber having a small single yarn fineness and a large number of filaments. When a high-density and thick fabric is used, there is a problem that lightness is impaired.
【0005】そこで、軽量性のある布帛とするために、
繊維の単糸断面に中空部を設けた中空繊維を用いる方法
が考えられるが、熱処理により収縮し、高密度になった
際に中空部が潰れ、十分な軽量性が得られないという問
題があり、優れた軽量性と柔軟性を有する厚地の布帛を
得ることができる高収縮性繊維は今まで提案されていな
かった。Therefore, in order to obtain a lightweight fabric,
A method of using a hollow fiber in which a hollow portion is provided in a single yarn cross section of the fiber is conceivable, but there is a problem that the hollow portion is crushed when heat-treated, and when the density becomes high, the hollow portion is not sufficiently lightweight. Highly shrinkable fibers capable of obtaining a thick fabric having excellent lightness and flexibility have not been proposed so far.
【0006】[0006]
【発明が解決しようとする課題】本発明は、上述した問
題点を解決し、熱処理を施した際の収縮率が高く、かつ
中空部が潰れにくく、高収縮性繊維単独あるいは高収縮
性繊維を芯糸として用いた異収縮混繊糸とし、これを製
織し、熱処理することにより、厚地織物としても軽量性
の優れている高密度織物を得ることができる高収縮性中
空繊維を提供することを技術的な課題とするものであ
る。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and has a high shrinkage ratio when subjected to heat treatment, and a hollow portion is hardly crushed. By providing a different shrinkage mixed fiber yarn used as a core yarn, weaving the same, and heat-treating the same, it is possible to provide a high shrinkage hollow fiber capable of obtaining a high-density woven fabric excellent in lightweight as a thick woven fabric. It is a technical issue.
【0007】[0007]
【課題を解決するための手段】本発明者らは上記課題を
解決するために鋭意研究の結果、本発明に到達した。す
なわち、本発明は、以下の(1)〜(2)を要旨とする
ものである。 (1)繊維が熱可塑性ポリマーからなり、各単糸が繊維
の横断面形状において、架橋部を介して2つ以上の中空
部を有し、中空率が10〜40%である中空繊維であって、
熱水収縮率が18〜50(%)、最大熱応力が0.05〜0.35
(cN/dtex)であり、かつ両者の積が1.05(%・cN
/dtex)以上であることを特徴とする高収縮性中空繊
維。 (2)繊維が熱可塑性ポリマーからなり、各単糸が繊維
の横断面形状において、中心部付近に1つ以上の中空部
を有し、かつ単糸外周に3つ以上の突起部を有する異形
断面中空形状を呈する中空繊維であって、繊維の横断面
における全面積のうち突起部の割合が30〜60%、嵩高率
が20〜50%であり、熱水収縮率が18〜50(%)、最大熱
応力が0.05〜0.35(cN/dtex)であり、かつ両者の積
が1.05(%・cN/dtex)以上であることを特徴とする
高収縮性中空繊維。Means for Solving the Problems The present inventors have made intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention provides the following (1) and (2). (1) The fiber is made of a thermoplastic polymer, and each single yarn is a hollow fiber having two or more hollow portions via a cross-linking portion in a cross-sectional shape of the fiber, and having a hollow ratio of 10 to 40%. hand,
Hot water shrinkage 18 ~ 50 (%), maximum thermal stress 0.05 ~ 0.35
(CN / dtex) and the product of both is 1.05 (% · cN
/ Dtex) or more. (2) The fiber is made of a thermoplastic polymer, and each single yarn has one or more hollow portions near the center in the cross-sectional shape of the fiber and three or more protrusions on the outer periphery of the single yarn. A hollow fiber having a hollow cross-sectional shape, in which the proportion of the protruding portion is 30 to 60%, the bulkiness is 20 to 50%, and the hot water shrinkage is 18 to 50 (% ), A high-shrinkable hollow fiber having a maximum thermal stress of 0.05 to 0.35 (cN / dtex) and a product of both is 1.05 (% · cN / dtex) or more.
【0008】なお、本発明における繊維の中空率とは、
横断面における中空部の面積の割合をいう。測定法は、
ニコン社製マイクロフォトS光学顕微鏡に顕微鏡写真撮
影装置を取り付け、5本の単糸について、単糸断面の横
断面形状を撮影し、図2の断面模式図に示すように、面
積Aと面積Bの値を算出し、次のようにして求めるもの
であり、5本の平均値とする。 中空率(%)=〔(面積A)/((面積A)+(面積
B))〕×100[0008] The hollow ratio of the fiber in the present invention is:
It means the ratio of the area of the hollow part in the cross section. The measurement method is
A microphotographing device was attached to a Nikon Microphoto S optical microscope, and the cross-sectional shape of a single yarn cross section was photographed for five single yarns. As shown in the schematic cross-sectional view of FIG. Is calculated as follows, and an average value of five lines is obtained. Hollow ratio (%) = [(Area A) / ((Area A) + (Area B))] × 100
【0009】また、本発明における繊維の嵩高率とは、
横断面における中空部と突起部で形成されるデッドエア
ー部の面積の割合をいう。測定法は、ニコン社製マイク
ロフォトS光学顕微鏡に顕微鏡写真撮影装置を取り付
け、5本の単糸について、単糸断面の横断面形状を撮影
し、図9及び図10の断面模式図に示すように、面積A
と面積Bの値を算出し、次のようにして求めるものであ
り、5本の平均値とする。 嵩高率(%)=〔(面積A)/((面積A)+(面積
B))〕×100[0009] The bulkiness of the fiber in the present invention is defined as:
It refers to the ratio of the area of the dead air portion formed by the hollow portion and the projection in the cross section. The measuring method is as follows. A microphotographing device is attached to a Microphoto S optical microscope manufactured by Nikon Corporation, and the cross-sectional shape of the cross section of the single yarn is photographed for five single yarns, as shown in the schematic cross-sectional views of FIGS. 9 and 10. And the area A
And the value of the area B are calculated as follows, and the average value of the five lines is obtained. Bulk (%) = [(Area A) / ((Area A) + (Area B))] × 100
【0010】さらに、本発明における繊維の熱水収縮率
は、測定する繊維糸条を50cmのループにし、繊度
(d)の1/30(g)の初荷重を掛けて長さAを求め、
次いでフリーにして沸騰水中に30分間浸漬した後、自然
乾燥し、再び繊度(d)の1/30(g)の初荷重を掛け
て長さBを求め、次の式で算出するものである。 熱水収縮率(%)=〔(A−B)/A〕×100[0010] Further, the hot water shrinkage of the fiber in the present invention is obtained by forming a fiber yarn to be measured into a loop of 50 cm and applying an initial load of 1/30 (g) of the fineness (d) to obtain a length A.
Then, after freeing and immersing in boiling water for 30 minutes, air-drying is performed, and an initial load of 1/30 (g) of the fineness (d) is applied again to obtain the length B, which is calculated by the following formula. . Hot water shrinkage (%) = [(AB) / A] × 100
【0011】また、最大熱応力は、カネボウエンジニア
リング社製KE−2型熱収縮応力測定機を用い、測定す
る繊維糸条16cmをループにして8cmとし、糸条の繊
度(d)の1/30gの初荷重を掛け、昇温速度100℃/分
で測定して、得られた熱応力曲線のピーク値を最大熱応
力とするものである。The maximum thermal stress is determined by using a KE-2 type heat shrinkage stress measuring device manufactured by Kanebo Engineering Co., Ltd., and looping 16 cm of the fiber yarn to be measured to 8 cm, 1/30 g of the fineness (d) of the yarn. The initial load is applied and measured at a heating rate of 100 ° C./min, and the peak value of the obtained thermal stress curve is defined as the maximum thermal stress.
【0012】[0012]
【発明の実施の形態】次に、本発明について詳細に説明
する。本発明の繊維を形成する熱可塑性ポリマーとして
は、ポリアミド、ポリエステル、ポリオレフィン及びこ
れらの混合物、共重合物等が挙げられるが、高い熱収縮
特性のものとするために、共重合ポリマーとすることが
好ましい。Next, the present invention will be described in detail. Examples of the thermoplastic polymer forming the fiber of the present invention include polyamide, polyester, polyolefin and a mixture thereof, a copolymer, and the like. preferable.
【0013】そして、特に柔らかい風合いを持つ繊維と
するために、ポリアミド樹脂を主とした熱可塑性ポリマ
ーを用いることが好ましく、中でもナイロン6とナイロ
ン66の共重合ポリマーを用いることが好ましく、これに
より柔軟性と好適な風合いを持つ繊維とすることができ
る。[0013] In order to obtain a fiber having a particularly soft texture, it is preferable to use a thermoplastic polymer mainly composed of a polyamide resin. In particular, a copolymer of nylon 6 and nylon 66 is preferably used. Fiber having good properties and suitable texture can be obtained.
【0014】熱可塑性ポリマーには、必要に応じて、顔
料、熱安定剤、酸化防止剤、耐候剤、難燃剤、可塑剤、
離型剤、滑剤、発泡剤、帯電防止剤、成型性改良剤、強
化剤、抗菌剤、消臭剤等を添加してもよい。If necessary, the thermoplastic polymer may contain a pigment, a heat stabilizer, an antioxidant, a weathering agent, a flame retardant, a plasticizer,
A release agent, a lubricant, a foaming agent, an antistatic agent, a moldability improving agent, a reinforcing agent, an antibacterial agent, a deodorant and the like may be added.
【0015】中でも本発明の高収縮性中空繊維において
は、上述した各種の熱可塑性ポリマーに長鎖アルキル基
を有するビスアミド化合物が添加されていることが好ま
しい。In particular, in the highly shrinkable hollow fiber of the present invention, it is preferable that a bisamide compound having a long-chain alkyl group is added to the above-mentioned various thermoplastic polymers.
【0016】この化合物としては、例えば、メタキシリ
レンビスステアリルアミド、メタキシリレンビスオレイ
ルアミド、エチレンビスステアリルアミド等が挙げら
れ、中でも、エチレンビスステアリルアミド(EB)が好
ましい。The compound includes, for example, metaxylylenebisstearylamide, metaxylylenebisoleylamide, ethylenebisstearylamide and the like, among which ethylenebisstearylamide (EB) is preferable.
【0017】中空繊維の中空率は紡糸温度と密接な関わ
りがあり、中空率を上げるためには紡糸温度を下げてい
く必要がある。しかし、紡糸温度の低下は同時に溶融斑
などの原因になり、繊維の強度を引き起こす懸念があ
る。このため強度を必要とする繊維の製造においては、
紡糸温度はある程度の高さを維持する必要がある。The hollow ratio of the hollow fiber is closely related to the spinning temperature, and it is necessary to lower the spinning temperature in order to increase the hollow ratio. However, a decrease in the spinning temperature simultaneously causes melting spots and the like, and there is a concern that fiber strength may be caused. Therefore, in the production of fibers that require strength,
The spinning temperature must be maintained at a certain level.
【0018】EBを添加することで、紡糸温度を下げるこ
となく、繊維単糸の形状が保持できるので、高中空率と
することが可能となり、高強度、高中空率の繊維を得る
ことが容易となる。By adding EB, the shape of the fiber single yarn can be maintained without lowering the spinning temperature, so that a high hollow ratio can be obtained, and a fiber having a high strength and a high hollow ratio can be easily obtained. Becomes
【0019】EBの添加量は、繊維重量の0.01〜1.0重量%
であることが好ましく、中でも0.05〜0.2重量%が好まし
い。0.01重量%未満の場合は、上記の単糸形状の保持の
効果が十分に発揮されず、一方、1.0重量%を超えると、
強度が低下したり、糸切れなどの紡糸操業性が悪化する
懸念がある。The amount of EB added is 0.01 to 1.0% by weight of the fiber weight.
Is preferable, and especially 0.05 to 0.2% by weight is preferable. When the content is less than 0.01% by weight, the effect of maintaining the single yarn shape is not sufficiently exhibited.
There is a concern that the spinning operability such as the strength is reduced or the yarn breakage is deteriorated.
【0020】そして、本発明の高収縮性中空繊維は、熱
水収縮率と最大熱応力との積が1.05(%・cN/dtex)
以上である。この収縮特性を満たすことにより、この繊
維からなる織物を熱処理すると、風合いが良好で、適度
なハリ、コシを有する高密度織物や異収縮混繊糸を得る
ことが可能となる。The highly shrinkable hollow fiber of the present invention has a product of the hot water shrinkage and the maximum thermal stress of 1.05 (% · cN / dtex).
That is all. By satisfying this shrinkage property, when a woven fabric made of this fiber is heat-treated, it is possible to obtain a high-density woven fabric and a different shrinkage mixed fiber having a good texture and moderate tension and firmness.
【0021】熱水収縮率は18〜50%とする。中でも20〜
40%とすることが好ましく、高収縮性繊維単体で用いる
場合は、収縮率を高めに調整することが好ましい。熱水
収縮率が18%より低いと、織物の熱処理時の収縮が不足
して高密度織物とならず、一方、50%より高いと経糸と
緯糸の目の詰まり方に斑を生じ、得られた織物の品位が
劣ったものとなる。The hot water shrinkage is 18 to 50%. Especially 20 ~
Preferably, it is 40%, and in the case of using a high-shrinkage fiber alone, it is preferable to adjust the shrinkage rate to be higher. If the hot water shrinkage rate is lower than 18%, the shrinkage during heat treatment of the woven fabric will be insufficient and the high density woven fabric will not be obtained. On the other hand, if it is higher than 50%, the warp and the weft will become unevenly clogged. The quality of the woven fabric is inferior.
【0022】最大熱応力は0.05〜0.35(cN/dtex)と
し、中でも0.09〜0.27(cN/dtex)とすることが好ま
しく、高収縮性繊維単体で用いる場合は、熱応力を高め
に調整することが好ましい。この値は、乾熱収縮時にお
ける収縮応力のピーク値であり、この最大熱応力が0.05
(cN/dtex)より小さいと、収縮応力が足りず、十分
収縮されないために収縮斑を生じる。一方、0.35(cN
/dtex)を超えると、経糸と緯糸の目が詰まりすぎるた
め、得られた織物が摩擦に弱くなり、毛羽、毛玉等も多
発しやすくなるなど、品位が低下する。The maximum thermal stress is set to 0.05 to 0.35 (cN / dtex), preferably to 0.09 to 0.27 (cN / dtex). Is preferred. This value is the peak value of shrinkage stress during dry heat shrinkage, and the maximum thermal stress is 0.05
If it is smaller than (cN / dtex), the shrinkage stress is insufficient, and the shrinkage is not sufficient, so that shrinkage unevenness occurs. On the other hand, 0.35 (cN
If the ratio exceeds (/ dtex), the warp and the weft yarns are too clogged, so that the obtained woven fabric is susceptible to friction and the fluff, pills and the like are liable to occur frequently, and the quality is lowered.
【0023】次に、本発明の高収縮性中空繊維のうち、
請求項1、2に該当するものを図面を用いて説明する。
図1、図3、図4は本発明の高収縮性中空繊維の単糸断面
形状を示す断面模式図である。図1は、中心部付近に十
字型の架橋部2を有するように4つの中空部1を配した四
つ穴断面形状を呈するものであり、図3は中空部1を2つ
有するもの、図4は中空部1を3つ有するものである。Next, among the highly shrinkable hollow fibers of the present invention,
Claims 1 and 2 will be described with reference to the drawings.
FIGS. 1, 3, and 4 are schematic cross-sectional views showing the cross-sectional shape of a single yarn of the highly shrinkable hollow fiber of the present invention. FIG. 1 shows a four-hole cross-sectional shape in which four hollow portions 1 are arranged so as to have a cross-shaped bridging portion 2 near the center, and FIG. 3 shows a shape having two hollow portions 1. 4 has three hollow portions 1.
【0024】本発明の高収縮性中空繊維は、各単糸が横
断面形状において、架橋部2を介して2つ以上の中空部1
を有している。このように中空部と中空部の間に架橋部
が存在することで強度を保持することができるととも
に、中空部の潰れを防ぐことができ、厚地の高密度織物
にした際にも中空部の形態を保持し、中空率の低下が生
じない。The highly shrinkable hollow fiber of the present invention has two or more hollow portions 1 through a cross-linking portion 2 in a cross-sectional shape of each single yarn.
have. As described above, the cross-linking portion between the hollow portions allows the strength to be maintained and the hollow portion to be prevented from being crushed. The shape is maintained, and the hollow ratio does not decrease.
【0025】中空部の位置や数については、中空部の形
状が良好に保持できるような位置とし、特に、図1に示
すように、中心部付近に十字型の架橋部を形成するよう
に4つの中空部を配した四つ穴断面形状にすることが好
ましい。The positions and the number of the hollow portions are set so that the shape of the hollow portions can be maintained well. In particular, as shown in FIG. It is preferable to have a four-hole cross-sectional shape having two hollow portions.
【0026】このような四つ穴断面形状であると、架橋
部が十字型であることによって、多方向からの応力に対
する耐性が高くなり、より高強度で中空部の潰れの少な
い繊維とすることができる。With such a four-hole cross-sectional shape, the cross-linking portion has a cross shape, so that resistance to stress from multiple directions is increased, and a fiber having higher strength and less collapse of the hollow portion is obtained. Can be.
【0027】そして、本発明の高収縮性中空繊維は、断
面積における中空部の面積の割合である、中空率が10〜
40%であることが必要である。この中空率の範囲とする
ことで、繊維の強度を保持し、中空部の形状を正常に保
つことが可能となる。The highly shrinkable hollow fiber of the present invention has a hollow ratio of 10 to 10 which is the ratio of the area of the hollow portion to the cross-sectional area.
It needs to be 40%. By setting the range of the hollow ratio, the strength of the fiber can be maintained, and the shape of the hollow portion can be normally maintained.
【0028】中空率が10%未満であると、得られた繊維
は軽量性に劣ったものとなり、一方、中空率が40%を超
えると、繊維の強度を維持することができず、また、中
空部の潰れや破れが生じるようになる。When the hollow ratio is less than 10%, the obtained fiber is inferior in lightness. On the other hand, when the hollow ratio exceeds 40%, the strength of the fiber cannot be maintained. The hollow portion is crushed or broken.
【0029】次に、本発明の高収縮性中空繊維の請求項
3、4に該当するものを図面を用いて説明する。図6、
図7、図8は本発明の高収縮性中空繊維の単糸断面形状
を示す断面模式図である。図6は突起部を除く断面形状
が四角形であり、中心部付近に中空部1を有する中空繊
維の四角形部4のそれぞれの角に、略直角をなす2つの
突起部3を有する井型断面形状を呈するものであり、図
7は、単糸断面の中心部付近に中空部1を配し、その周
囲に3つの突起部3を設けた異型断面中空形状を呈する
もの、図8は中空部1の周囲に突起部3を6つ有するもの
である。Next, the high shrinkage hollow fiber of the present invention, which corresponds to claims 3 and 4, will be described with reference to the drawings. FIG.
FIGS. 7 and 8 are schematic cross-sectional views showing the cross-sectional shape of a single yarn of the highly shrinkable hollow fiber of the present invention. FIG. 6 shows a square cross-sectional shape excluding the protruding portions, and having two protruding portions 3 at a substantially right angle at each corner of the rectangular portion 4 of the hollow fiber having the hollow portion 1 near the center. FIG. 7 shows a hollow section 1 in which a hollow section 1 is arranged near the center of the cross section of a single yarn and three projections 3 are provided around the hollow section 1. FIG. Has six projections 3 around the periphery of the projection.
【0030】本発明の高収縮性中空繊維は、各単糸が横
断面形状において、中空部1の周囲に3つ以上の突起部
3を有している。このように単糸外周に突起部が存在す
ることで、単糸同士が突起部で接触して繊維間の空隙を
保ち、その結果として中空部の潰れを防ぐことができ、
高密度織物や異収縮混繊糸等の製品にした際にも中空部
の形態を保持し、中空率の低下が生じない。The high-shrinkable hollow fiber of the present invention has three or more protrusions 3 around the hollow portion 1 in each cross section of the single yarn. By the presence of the protrusions on the outer periphery of the single yarn in this way, the single yarns are in contact with each other at the protrusions to keep the gap between the fibers, and as a result, the hollow portion can be prevented from being crushed,
Even when a product such as a high-density woven fabric or a different shrinkage mixed fiber is formed, the shape of the hollow portion is maintained, and the hollow ratio does not decrease.
【0031】突起部の位置や数については、中空部の形
状が保持できるような位置とし、特に、図6に示すよう
に、突起部を除く断面形状が四角形であり、中心部付近
に中空部1を有する中空繊維の四角形部4のそれぞれの
角に、略直角をなす2つの突起部3を有する井型断面形
状にすることが好ましい。このような井型断面形状であ
ると、多方向からの応力に対する耐性が高くなり、ま
た、繊維間の空隙をより多く保つことができ、より高強
度で中空部の潰れの少ない繊維とすることができる。The position and number of the projections are such that the shape of the hollow portion can be maintained. In particular, as shown in FIG. 6, the cross-sectional shape excluding the projection portion is rectangular, and the hollow portion is located near the center. It is preferable that the hollow fiber has a well-shaped cross-sectional shape having two projecting portions 3 that are substantially perpendicular to each corner of the rectangular portion 4 of the hollow fiber having the same. With such a well-shaped cross-sectional shape, resistance to stress from multiple directions is increased, and more voids between fibers can be maintained, and fibers having higher strength and less collapse of the hollow portion are used. Can be.
【0032】そして、本発明の高収縮性中空繊維は、繊
維の横断面における突起部の面積の割合が30〜60%であ
ることが必要である。この範囲とすることで、繊維間の
空隙を良好に保つことが可能になり、結果として中空部
の形状を正常に保つことが可能となる。In the high-shrinkable hollow fiber of the present invention, the ratio of the area of the protrusion in the cross section of the fiber needs to be 30 to 60%. By setting the content in this range, it is possible to maintain a good gap between the fibers, and as a result, it is possible to keep the shape of the hollow portion normal.
【0033】突起部の割合が30%未満であると、突起部
によって作り出されるデッドエアー部が少なくなり、繊
維間の空隙を形成することができなくなったり、収縮時
に中空部が形状を保つことができなくなり潰れてしま
う。一方、突起部の割合が60%を超えると、繊維の形状
を保つことが困難になり、繊維の強伸度が低下し、ま
た、得られた布帛の品位が低下しやすい。When the proportion of the projections is less than 30%, the number of dead air portions created by the projections is reduced, so that it becomes impossible to form voids between fibers, or the hollow portions maintain their shape during shrinkage. It can not be done and will be crushed. On the other hand, when the proportion of the projections exceeds 60%, it becomes difficult to maintain the shape of the fiber, the strength and elongation of the fiber are reduced, and the quality of the obtained fabric is liable to be reduced.
【0034】さらに、断面積における中空部と突起部で
形成される繊維間のデッドエアー部の面積の割合であ
る、繊維の嵩高率が20〜50%であることが重要である。
嵩高率が20%未満である場合、形成されるデッドエアー
部が少なくなり、繊維間の空隙を保つことができなくな
り、収縮時に中空部が形状を保つことができなくなって
潰れてしまう。一方、嵩高率が50%を超える場合、中空
部が大きすぎる場合は、中空部に潰れや割れの生じた繊
維となり、突起部の長さが長すぎる場合は、繊維の形状
を維持することができなくなり、得られた布帛の品位が
低下しやすい。Further, it is important that the bulk ratio of the fibers, which is the ratio of the area of the dead air portion between the fibers formed by the hollow portions and the protrusions in the sectional area, is 20 to 50%.
If the bulkiness is less than 20%, the number of dead air portions formed is small, the voids between the fibers cannot be maintained, and the hollow portions cannot be maintained in shape at the time of shrinkage and collapse. On the other hand, when the bulk ratio exceeds 50%, when the hollow portion is too large, the hollow portion becomes a fiber having crushed or cracked, and when the length of the projection portion is too long, the fiber shape can be maintained. It is no longer possible, and the quality of the obtained fabric is likely to deteriorate.
【0035】また、中空部の数は1つ以上とし、複数あ
ってもよいが、中空部間の架橋部により強度が保持でき
るような数であることが好ましく、4つ程度とすること
が好ましい。また、この形状の繊維は、嵩高率が上記の
範囲内であれば中空率は特に限定するものではないが、
中空率は10〜30%程度とすることが好ましい。The number of hollow portions may be one or more, and a plurality of hollow portions may be provided. However, the number is preferably such that the strength can be maintained by the bridging portions between the hollow portions, and preferably about four. . In addition, the fiber of this shape, the hollow ratio is not particularly limited as long as the bulk ratio is within the above range,
The hollow ratio is preferably about 10 to 30%.
【0036】本発明の高収縮性中空繊維は、製織し、熱
処理を施すことによって収縮が生じ、高密度の織物とな
るものであるが、製織条件は特に限定するものではな
く、通常の織物を得るような方法で所望の織密度で製織
を行えばよい。このとき、本発明の繊維を単独、あるい
は本発明の繊維を芯糸として用いた異収縮混繊糸として
用いることができ、これらの糸を経糸と緯糸の両方に用
いても、もしくは一方に用いて製織してもよい。The high-shrinkable hollow fiber of the present invention shrinks by weaving and heat treatment to give a high-density woven fabric, but the weaving conditions are not particularly limited. Weaving may be performed at a desired weaving density in such a way as to obtain the desired weaving density. At this time, the fiber of the present invention can be used alone, or as a different shrinkage mixed fiber using the fiber of the present invention as a core yarn, and these yarns can be used for both warp and weft, or used for one of them. May be woven.
【0037】そして、加工条件としては、精練、染色、
Fix.(余分な染料の除去工程)、F.S.(生機の風合いの
調整及び熱固定)といった工程があり、各工程における
熱処理としては、一般的な高収縮繊維を用いた織物の熱
処理条件で処理を行えばよい。Processing conditions include scouring, dyeing,
Fix. (The process of removing excess dye) and FS (the adjustment of the texture of the greige and heat fixing). The heat treatment in each process is performed under the heat treatment conditions of the fabric using general high shrinkage fiber. Just do it.
【0038】そして、本発明の高収縮性中空繊維は、こ
れらの熱処理によって収縮が生じるものであり、例え
ば、ナイロン6/ナイロン66共重合ポリマーを主成分と
する繊維の場合は、以下のような条件で処理を行えばよ
い。 精練工程:70〜80℃、20分〜30分 染色工程:100℃、30分 Fix.工程:70〜80℃、20分〜30分 F.S.工程:160〜170℃、30秒 なお、熱処理条件については上記条件に限定されるもの
ではなく、繊維を形成するポリマーの組成や、繊度、織
組織などに合わせて適宜調整すればよい。The heat-shrinkable hollow fiber of the present invention is shrunk by these heat treatments. For example, in the case of a fiber mainly containing a nylon 6 / nylon 66 copolymer, Processing may be performed under conditions. Refining process: 70-80 ° C, 20-30 minutes Dyeing process: 100 ° C, 30 minutes Fix. Process: 70-80 ° C, 20-30 minutes FS process: 160-170 ° C, 30 seconds Is not limited to the above conditions, and may be appropriately adjusted according to the composition of the polymer forming the fiber, the fineness, the woven structure, and the like.
【0039】次に、本発明の高収縮性中空繊維の製造方
法について説明する。本発明の高収縮性中空繊維は、合
成繊維の製造の常法に従い、溶融紡糸装置を用いて製造
することができる。紡糸方法としては、紡糸した糸条を
一旦未延伸糸として巻き取り、巻き取った未延伸糸を延
伸機で延伸する二工程法と、紡糸した糸を直接ローラ間
で延伸した後に巻き取る一工程法のどちらを採用しても
よいが、生産性よく製造するためには、直接紡糸延伸法
による高速溶融紡糸法、すなわち一工程法を用いること
が好ましい。Next, the method for producing the highly shrinkable hollow fiber of the present invention will be described. The highly shrinkable hollow fiber of the present invention can be produced using a melt spinning apparatus according to a conventional method for producing a synthetic fiber. As a spinning method, a two-step method in which a spun yarn is once wound as an undrawn yarn and the wound undrawn yarn is drawn by a drawing machine, and a one-step method in which the spun yarn is drawn directly between rollers and then wound Either of these methods may be employed, but in order to produce with good productivity, it is preferable to use a high-speed melt spinning method by a direct spinning drawing method, that is, a one-step method.
【0040】一工程法の場合について説明する。紡糸口
金より溶融紡糸した糸条を冷却固化した後、油剤を付与
し、ローラ間で延伸した後、巻取速度2000〜5000m/分
程度で巻き取る。紡糸条件は、使用するポリマーや求め
られる品位によって変わるが、例えば、ナイロン6/ナ
イロン66共重合ポリマーを主成分とする繊維の場合は、
延伸倍率1.8倍以上、好ましくは2.0〜4.0倍程度で延伸
すればよい。また、条件に応じて熱延伸を行うことが好
ましく、前述の例の場合は、ローラ温度100〜180℃程度
で熱延伸することが好ましい。また、必要に応じて、採
取した一工程糸を再度延伸機で延伸処理してもよい。The case of the one-step method will be described. After the yarn melt-spun from the spinneret is cooled and solidified, an oil agent is applied thereto, stretched between rollers, and then wound up at a winding speed of about 2000 to 5000 m / min. The spinning conditions vary depending on the polymer used and the quality required. For example, in the case of a fiber mainly composed of a nylon 6 / nylon 66 copolymer,
The stretching may be performed at a stretching ratio of 1.8 times or more, preferably about 2.0 to 4.0 times. Further, it is preferable to perform the thermal stretching according to the conditions, and in the case of the above-described example, it is preferable to perform the thermal stretching at a roller temperature of about 100 to 180 ° C. If necessary, the collected one-step yarn may be drawn again by a drawing machine.
【0041】二工程法の場合は、溶融紡糸した糸条を冷
却固化した後、油剤を付与し、巻取速度800〜1200m/分
程度で未延伸糸を巻き取り、次に、未延伸糸を延伸機に
供給して延伸を行う。延伸条件としては、ナイロン6/
ナイロン66共重合ポリマーを主成分とする繊維の場合、
ローラ間で倍率2.0倍以上、好ましくは2.5〜5.0倍程
度、ローラ間に熱処理ヒータ等を設け、温度100〜200℃
程度で熱延伸すればよい。In the case of the two-step method, after the melt-spun yarn is cooled and solidified, an oil agent is applied, and the undrawn yarn is wound at a winding speed of about 800 to 1200 m / min. It is supplied to a stretching machine to perform stretching. The stretching conditions are nylon 6 /
In the case of the fiber whose main component is nylon 66 copolymer,
A magnification of 2.0 times or more between rollers, preferably about 2.5 to 5.0 times, a heat treatment heater or the like is provided between the rollers, and the temperature is 100 to 200 ° C.
What is necessary is just to heat-draw by about.
【0042】また、一工程法、二工程法共に、上記の延
伸条件を採用し、更に延伸時の糸切れや毛羽発生をなく
し、収縮の特性を満足するフィラメントとするために
は、紡糸で付与される油剤は非水系油剤であることが好
ましい。In both the one-step method and the two-step method, the above-mentioned drawing conditions are employed. Furthermore, in order to eliminate yarn breakage and fluff during drawing and to obtain a filament satisfying the shrinkage property, it is necessary to provide a filament by spinning. The oil agent to be used is preferably a non-aqueous oil agent.
【0043】[0043]
【実施例】次に、本発明を実施例により具体的に説明す
る。なお、実施例中の各種の値の測定、評価は次のよう
にして行った。 〔強伸度〕島津製作所(株)製オートグラフAGS-50Dを
用い、繊度(d)×1/30の初荷重(g)をかけ、試料長2
5cm、引っ張り速度25cm/分で測定した。 〔中空率〕前記の方法で測定し、算出した。 〔嵩高率〕前記の方法で測定し、算出した。 〔熱水収縮率〕前記の方法で測定し、算出した。 〔最大熱応力〕前記の方法で測定し、算出した。 〔布帛評価〕得られた繊維を緯糸密度90本/2.54cm、経
糸密度90本/2.54cmで平織物を製織した。得られた織物
をサンモールFL1g/l、苛性ソーダ1g/lを用いて80℃
で20分精練を行い、続いてTectilon Yellow 4R1%o.w.
f、酢酸0.3cc/l、レベランNKD2%o.w.fを用いて100
℃で30分染色を行い、その後サンライフE27 2%o.w.
fを用いて80℃で20分Fix作業を行い、最後に170℃で30
秒間F.S.作業を行った。染色、熱処理した後の織物を、
軽量性及び風合い(柔らかさとハリ、コシの有無)につ
いて、触感により3段階(優れているものから○、△、
×)で評価した。 〔中空部状態〕布帛評価を行った染色、熱処理後の織物
について、織物から構成繊維を取り出し、その単糸断面
形状を光学顕微鏡にて観察し、中空形状が正常に保たれ
ているものを○、中空部が潰れているなど正常に保たれ
ていないものを×として評価した。Next, the present invention will be described in detail with reference to examples. In addition, measurement and evaluation of various values in the examples were performed as follows. [Strength of elongation] Using an autograph AGS-50D manufactured by Shimadzu Corporation, apply an initial load (g) of fineness (d) x 1/30, sample length 2
The measurement was performed at 5 cm and a pulling speed of 25 cm / min. [Hollow ratio] It was measured and calculated by the above method. [Bulkiness] Measured and calculated by the method described above. [Hot water shrinkage] Measured and calculated by the above method. [Maximum thermal stress] The maximum thermal stress was measured and calculated by the method described above. [Evaluation of Fabric] The obtained fibers were woven into a plain woven fabric at a weft density of 90 threads / 2.54 cm and a warp density of 90 threads / 2.54 cm. The obtained woven fabric was heated to 80 ° C. using 1 g / l of Sunmol FL and 1 g / l of caustic soda.
20 minutes scouring, followed by Tectilon Yellow 4R 1% ow
f, 0.3 cc / l acetic acid, 100% using Leveran NKD 2% owf
Stain at 30 ° C for 30 minutes, then Sunlife E27 2% ow
Perform fixation at 80 ° C for 20 minutes using f
FS work was done for seconds. The fabric after dyeing and heat treatment,
Lightness and texture (softness and firmness, presence or absence of stiffness) in three stages by touch (from excellent to ○, △,
X). [Hollow state] The dyed and heat-treated woven fabric for which the fabric evaluation was performed, the constituent fibers were taken out of the woven fabric, and the single-filament cross-sectional shape was observed with an optical microscope. Those that were not kept normally, such as a crushed hollow portion, were evaluated as x.
【0044】実施例1 相対粘度(96%硫酸を溶媒とし、濃度1g/dl、温度25
℃で測定した。)3.4のナイロン6とナイロン66の共重合
体〔共重合比率(N6/N66)85/15〕ペレットにEB 0.1
重量%を添加し、エクストルーダーに供給して紡糸温度2
70℃で溶融紡糸した。紡糸後の糸条を冷却し、油剤を付
与した後、ローラ温度130℃の熱ローラ間で延伸倍率2.2
倍で熱延伸を施し、3500m/分の速度で巻き取り、図1
に示すような四つ穴断面形状の高収縮性中空繊維66.6dt
ex/16fを得た。Example 1 Relative viscosity (concentration: 1 g / dl, 96% sulfuric acid as solvent, temperature: 25
Measured in ° C. ) A copolymer of 3.4 nylon 6 and nylon 66 [copolymerization ratio (N6 / N66) 85/15] pellets with EB 0.1
% By weight and fed to an extruder to adjust the spinning temperature to 2.
It was melt spun at 70 ° C. After cooling the spun yarn and applying an oil agent, a stretching ratio of 2.2 between heat rollers at a roller temperature of 130 ° C.
It is drawn at a speed of 3500 m / min and stretched at a speed of 3500 m / min.
66.6dt high-shrinkable hollow fiber with four-hole cross-section as shown
ex / 16f was obtained.
【0045】実施例2、比較例1〜2 紡糸温度を種々変更し、繊維の中空率が表1に示す値に
なるようにした以外は、実施例1と同様に行い、図1に
示すような四つ穴断面形状の高収縮性中空繊維66.6dtex
/16fを得た。Example 2, Comparative Examples 1-2 Except that the spinning temperature was variously changed so that the hollow ratio of the fiber became the value shown in Table 1, the same procedure as in Example 1 was carried out. 66.6dtex high-shrinkable hollow fiber with a four-hole cross section
/ 16f.
【0046】実施例3 紡糸口金を変更した以外は実施例1と同様に行い、図3に
示すような二つ穴断面形状の中空繊維66.6dtex/16fを得
た。Example 3 The procedure of Example 1 was repeated except that the spinneret was changed, to obtain a hollow fiber 66.6 dtex / 16f having a two-hole cross-sectional shape as shown in FIG.
【0047】実施例4 紡糸口金を変更した以外は実施例1と同様に行い、図4に
示すような三つ穴断面形状の中空繊維66.6dtex/16fを得
た。Example 4 The procedure of Example 1 was repeated except that the spinneret was changed to obtain a hollow fiber 66.6 dtex / 16f having a three-hole cross-sectional shape as shown in FIG.
【0048】比較例3 紡糸口金を変更し、各単糸を横断面形状が中空部のない
丸断面のものとした以外は、実施例1と同様にして行
い、丸断面形状の繊維66.6dtex/16fを得た。Comparative Example 3 The same procedure as in Example 1 was carried out except that the spinneret was changed and each of the single yarns had a round cross section without a hollow portion. 16f was obtained.
【0049】比較例4 紡糸口金を変更し、図5に示すような、各単糸の横断面
形状が1つの中空部を有する丸断面のものとした以外
は、実施例1と同様にして行い、丸断面形状の中空繊維6
6.6dtex/16fを得た。Comparative Example 4 The same procedure as in Example 1 was carried out except that the spinneret was changed so that the cross section of each single yarn was a circular cross section having one hollow portion as shown in FIG. 6 hollow fibers with round cross section
6.6dtex / 16f was obtained.
【0050】比較例5 ナイロン6とナイロン66の共重合体に代えて、相対粘度
3.5のナイロン6を用いた以外は、実施例1と同様にして
行い、図1に示すような四つ穴断面形状の中空繊維66.6
dtex/16f を得た。Comparative Example 5 Relative viscosity was changed in place of the copolymer of nylon 6 and nylon 66.
A hollow fiber 66.6 having a four-hole cross section as shown in FIG. 1 was prepared in the same manner as in Example 1 except that 3.5 nylon 6 was used.
dtex / 16f was obtained.
【0051】実施例1〜4、比較例1〜5で得られた繊
維の各種物性値の測定、評価結果を表1に示す。Table 1 shows the measurement and evaluation results of various physical properties of the fibers obtained in Examples 1 to 4 and Comparative Examples 1 to 5.
【0052】[0052]
【表1】 [Table 1]
【0053】表1から明らかなように、実施例1〜4で
得られた繊維は、高い中空率と、十分な熱水収縮率と最
大熱応力値を有しており、この繊維からなる織物は、熱
処理すると、軽量性に優れ、高密度で、かつ良好な風合
を有するものとなった。一方、比較例1及び3の繊維
は、中空率が低すぎる、あるいは中空部が全くないため
に、得られた布帛は軽量性に劣るものであった。比較例
2の繊維は、中空率が高すぎるため、一部の単糸に中空
部の破れを生じて強伸度が低下しており、また、織物と
したときに中空部に潰れが生じていて軽量性・風合いに
劣るものであった。比較例4の繊維は、中空部に架橋部
を有していなかったため、強度が低く、また織物とした
ときに中空部に潰れが生じていて軽量性・風合いの劣る
ものであった。比較例5の繊維は、熱可塑性ポリマーの
熱水収縮率が低いために、熱処理を施しても十分に収縮
せず、得られた布帛は風合いの劣るものであった。As apparent from Table 1, the fibers obtained in Examples 1 to 4 have a high hollowness, a sufficient hot water shrinkage and a maximum thermal stress value. When heat-treated, became excellent in lightness, high in density and good in texture. On the other hand, the fibers of Comparative Examples 1 and 3 had too low a hollow ratio or had no hollow portion, so that the obtained fabric was inferior in lightness. The fiber of Comparative Example 2 has too high a hollow ratio, so that the hollow portion is broken in some of the single yarns and the high elongation is reduced, and the hollow portion is crushed when a woven fabric is formed. And poor lightness and texture. The fiber of Comparative Example 4 had no crosslinked portion in the hollow portion, and thus had low strength, and when formed into a woven fabric, the hollow portion was crushed, resulting in poor lightness and texture. The fiber of Comparative Example 5 did not shrink sufficiently even when subjected to heat treatment because the thermoplastic polymer had a low hot water shrinkage, and the resulting fabric had poor texture.
【0054】実施例5 相対粘度(96%硫酸を溶媒とし、濃度1g/dl、温度25
℃で測定した。)3.4のナイロン6とナイロン66の共重合
体〔共重合比率(N6/N66)85/15〕ペレットをエクス
トルーダーに供給して紡糸温度270℃で溶融紡糸した。
紡糸後の糸条を冷却し、油剤を付与した後、ローラ温度
130℃の熱ローラ間で延伸倍率2.2倍で熱延伸を施し、35
00m/分の速度で巻き取り、図6に示すような井型断面
形状の高収縮性中空繊維66.6dtex/16fを得た。Example 5 Relative viscosity (concentration: 1 g / dl, 96% sulfuric acid as solvent, temperature: 25
Measured in ° C. 3) A pellet of 3.4 copolymer of nylon 6 and nylon 66 [copolymerization ratio (N6 / N66) 85/15] was supplied to an extruder and melt-spun at a spinning temperature of 270 ° C.
After cooling the spun yarn and applying oil, the roller temperature
The film is stretched at a stretching ratio of 2.2 times between heat rollers at 130 ° C,
Winding was performed at a speed of 00 m / min to obtain 66.6 dtex / 16f high-shrinkable hollow fibers having a well-shaped cross section as shown in FIG.
【0055】実施例6 紡糸口金を変更した以外は実施例5と同様に行い、図7
に示すような突起部を3つ有する高収縮性中空繊維繊維6
6.6dtex/16fを得た。Example 6 The procedure of Example 5 was repeated except that the spinneret was changed.
Highly shrinkable hollow fiber fiber 6 having three protrusions as shown in FIG.
6.6dtex / 16f was obtained.
【0056】実施例7 紡糸口金を変更した以外は実施例5と同様に行い、図8
に示すような突起部を6つ有する高収縮性中空繊維66.6d
tex/16fを得た。Example 7 The procedure of Example 5 was repeated, except that the spinneret was changed.
Highly shrinkable hollow fiber 66.6d with six protrusions as shown in
tex / 16f was obtained.
【0057】比較例6〜7 紡糸温度を種々変更し、突起部の割合及び嵩高率が表2
の値となるようにした以外は実施例5と同様にして行
い、図6に示すような井型断面形状の繊維66.6dtex/16f
を得た。Comparative Examples 6 and 7 The spinning temperature was variously changed, and the ratio of the projections and the bulkiness were changed as shown in Table 2.
The procedure was performed in the same manner as in Example 5 except that the value of the fiber was 66.6 dtex / 16f having a well-shaped cross section as shown in FIG.
I got
【0058】比較例8 紡糸口金を変更した以外は実施例5と同様にして行い、
図11に示すような突起部を1つ有する中空繊維66.6dte
x/16fを得た。Comparative Example 8 The same procedure was performed as in Example 5 except that the spinneret was changed.
66.6 dte hollow fiber having one protrusion as shown in FIG.
x / 16f was obtained.
【0059】比較例9 紡糸口金を変更した以外は実施例5と同様にして行い、
図12に示すような突起部を2つ有する中空繊維66.6dte
x/16fを得た。Comparative Example 9 The same procedure as in Example 5 was carried out except that the spinneret was changed.
66.6 dte hollow fiber having two protrusions as shown in FIG.
x / 16f was obtained.
【0060】比較例10 ナイロン6とナイロン66の共重合体に代えて、相対粘度
3.5のナイロン6を用いた以外は実施例5と同様にして行
い、図6に示すような井型断面形状の中空繊維66.6dtex
/16fを得た。Comparative Example 10 Relative viscosity was changed in place of the copolymer of nylon 6 and nylon 66.
A hollow fiber 66.6 dtex having a well-shaped cross section as shown in FIG. 6 was prepared in the same manner as in Example 5 except that nylon 6 of 3.5 was used.
/ 16f.
【0061】実施例5〜7、比較例6〜10で得られた
繊維の各種物性値の測定、評価結果を表1に示す。Table 1 shows the measurement and evaluation results of various physical properties of the fibers obtained in Examples 5 to 7 and Comparative Examples 6 to 10.
【0062】[0062]
【表2】 [Table 2]
【0063】表2から明らかなように、実施例5〜7で
得られた繊維は、単糸断面の突起部の割合と嵩高率が十
分であり、高い熱水収縮率と最大熱応力値を有してい
て、この繊維からなる織物は、熱処理すると、軽量性に
優れ、高密度で、かつ良好な風合を有するものとなっ
た。一方、比較例6の繊維は、突起部の割合及び嵩高率
が低すぎるために、得られた布帛は軽量性に劣るもので
あった。比較例7の繊維は、突起部の割合及び嵩高率が
高すぎるため、一部の単糸に中空部の破れ及び単糸形状
の不良を生じて強伸度が低下しており、また、織物とし
たときに中空部及び繊維間の空隙に潰れが生じて、軽量
性、風合いの劣るものであった。また、比較例8〜9の
繊維は、突起部の数が不足していたために、繊維間の空
隙を保つことができす、織物としたときに中空部に潰れ
が生じて軽量性・風合いの劣るものとなった。また、比
較例10の繊維は、熱可塑性ポリマーの熱水収縮率が低
いために、熱処理を施しても十分に収縮せず、得られた
布帛は風合いに劣るものであった。As is clear from Table 2, the fibers obtained in Examples 5 to 7 have a sufficient ratio of protrusions in the cross section of a single yarn and a high bulk factor, and have a high hot water shrinkage ratio and a maximum thermal stress value. The heat treatment of the woven fabric made of these fibers resulted in an excellent lightness, a high density, and a good feeling. On the other hand, in the fiber of Comparative Example 6, the ratio of the protrusions and the bulkiness were too low, so that the obtained fabric was inferior in lightness. In the fiber of Comparative Example 7, since the ratio of the protruding portion and the bulkiness were too high, the hollow portion was broken in some of the single yarns and the shape of the single yarn was poor, and the high elongation was reduced. When this was done, the gaps between the hollow portions and the fibers were crushed, resulting in poor lightness and texture. In addition, the fibers of Comparative Examples 8 and 9 were insufficient in the number of protrusions, so that the gaps between the fibers could be maintained, and when formed into a woven fabric, the hollow portions were crushed, resulting in lightness and texture. Became inferior. Further, the fiber of Comparative Example 10 did not shrink sufficiently even when subjected to heat treatment because the thermoplastic polymer had a low hot water shrinkage, and the obtained fabric had poor texture.
【0064】[0064]
【発明の効果】本発明の高収縮性中空繊維は、単独ある
いは高収縮性繊維を芯糸として用いた異収縮混繊糸と
し、製織して得られた織物に熱処理を施すと、中空部が
潰れず、軽量性と柔軟性に優れた織物を得ることができ
る。特に厚地織物としても軽量性、柔軟性に優れている
高密度織物を得ることが可能となる。According to the present invention, the high-shrinkable hollow fiber of the present invention can be used as a hetero-shrinkage mixed fiber using a single or high-shrinkable fiber as a core yarn. A woven fabric excellent in lightness and flexibility can be obtained without being crushed. In particular, it is possible to obtain a high-density woven fabric which is excellent in lightness and flexibility even as a thick woven fabric.
【図1】本発明の架橋部を有する高収縮性中空繊維の一
実施態様を示す断面模式図である。FIG. 1 is a schematic cross-sectional view showing one embodiment of a highly shrinkable hollow fiber having a crosslinked portion of the present invention.
【図2】本発明の高収縮性中空繊維の中空率の算出方法
を示す断面説明図である。FIG. 2 is an explanatory cross-sectional view showing a method for calculating a hollow ratio of a highly shrinkable hollow fiber of the present invention.
【図3】本発明の架橋部を有する高収縮性中空繊維の他
の実施態様を示す断面模式図である。FIG. 3 is a schematic cross-sectional view showing another embodiment of the highly shrinkable hollow fiber having a crosslinked portion of the present invention.
【図4】本発明の架橋部を有する高収縮性中空繊維の他
の実施態様を示す断面模式図である。FIG. 4 is a schematic sectional view showing another embodiment of the high-shrinkable hollow fiber having a crosslinked portion of the present invention.
【図5】比較例4の中空繊維を示す断面模式図である。FIG. 5 is a schematic sectional view showing a hollow fiber of Comparative Example 4.
【図6】本発明の突起部を有する高収縮性中空繊維の一
実施態様を示す断面模式図である。FIG. 6 is a schematic cross-sectional view showing one embodiment of a highly shrinkable hollow fiber having a projection according to the present invention.
【図7】本発明の突起部を有する高収縮性中空繊維の他
の実施態様を示す断面模式図である。FIG. 7 is a schematic cross-sectional view showing another embodiment of the high-shrinkable hollow fiber having a projection according to the present invention.
【図8】本発明の突起部を有する高収縮性中空繊維の他
の実施態様を示す断面模式図である。FIG. 8 is a schematic cross-sectional view showing another embodiment of the high-shrinkable hollow fiber having a projection according to the present invention.
【図9】本発明の高収縮性中空繊維の嵩高率の算出方法
を示す断面説明図である。FIG. 9 is an explanatory cross-sectional view showing a method for calculating a bulkiness rate of a highly shrinkable hollow fiber of the present invention.
【図10】本発明の高収縮性中空繊維の嵩高率の算出方
法を示す断面説明図である。FIG. 10 is an explanatory sectional view showing a method for calculating a bulkiness rate of a highly shrinkable hollow fiber of the present invention.
【図11】比較例8の中空繊維を示す断面模式図であ
る。FIG. 11 is a schematic sectional view showing a hollow fiber of Comparative Example 8.
【図12】比較例9の中空繊維を示す断面模式図であ
る。FIG. 12 is a schematic sectional view showing a hollow fiber of Comparative Example 9.
1 中空部 2 架橋部 3 突起部 4 四角形部 DESCRIPTION OF SYMBOLS 1 Hollow part 2 Bridge part 3 Projection part 4 Square part
Claims (4)
糸が繊維の横断面形状において、架橋部を介して2つ以
上の中空部を有し、中空率が10〜40%である中空繊維で
あって、熱水収縮率が18〜50(%)、最大熱応力が0.05
〜0.35(cN/dtex)であり、かつ両者の積が1.05(%
・cN/dtex)以上であることを特徴とする高収縮性中
空繊維。1. A hollow fiber wherein the fiber is made of a thermoplastic polymer, and each single yarn has two or more hollow portions via a cross-linking portion in a cross-sectional shape of the fiber, and has a hollow ratio of 10 to 40%. The hot water shrinkage is 18-50% and the maximum thermal stress is 0.05
0.30.35 (cN / dtex) and the product of both is 1.05 (%
A high-shrinkable hollow fiber characterized by being not less than cN / dtex).
近に十字型の架橋部を形成するように4つの中空部を有
する請求項1記載の高収縮性中空繊維。2. The high-shrinkable hollow fiber according to claim 1, wherein each of the single yarns has four hollow portions so as to form a cross-shaped cross-linking portion near the center in the cross-sectional shape.
糸が繊維の横断面形状において、中心部付近に1つ以上
の中空部を有し、かつ単糸外周に3つ以上の突起部を有
する異形断面中空形状を呈する中空繊維であって、繊維
の横断面における全面積のうち突起部の割合が30〜60
%、嵩高率が20〜50%であり、熱水収縮率が18〜50
(%)、最大熱応力が0.05〜0.35(cN/dtex)であ
り、かつ両者の積が1.05(%・cN/dtex)以上である
ことを特徴とする高収縮性中空繊維。3. The fiber is made of a thermoplastic polymer, and each single yarn has one or more hollow portions near the center in the cross-sectional shape of the fiber, and three or more protrusions on the outer periphery of the single yarn. A hollow fiber having a modified cross-section hollow shape having a ratio of the protruding portion to the total area in the cross section of the fiber is 30 to 60.
%, Bulkiness is 20-50%, hot water shrinkage is 18-50
(%), A high-shrinkable hollow fiber having a maximum thermal stress of 0.05 to 0.35 (cN / dtex) and a product of both is 1.05 (% · cN / dtex) or more.
この四角形部のそれぞれの角に、略直角をなす2つの突
起部を有する井型断面形状を呈する中空繊維である、請
求項3記載の高収縮性中空繊維。4. A cross-sectional shape excluding a protrusion is a quadrangle,
The high-shrinkable hollow fiber according to claim 3, wherein the hollow fiber has a well-shaped cross-sectional shape having two substantially perpendicular projections at each corner of the quadrangular portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000015621A JP2001207323A (en) | 2000-01-25 | 2000-01-25 | Highly shrinkable hollow fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000015621A JP2001207323A (en) | 2000-01-25 | 2000-01-25 | Highly shrinkable hollow fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001207323A true JP2001207323A (en) | 2001-08-03 |
Family
ID=18542889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000015621A Pending JP2001207323A (en) | 2000-01-25 | 2000-01-25 | Highly shrinkable hollow fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001207323A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006233015A (en) * | 2005-02-24 | 2006-09-07 | Bridgestone Corp | Rubber composition, vulcanized rubber and tire |
CN105887218A (en) * | 2016-04-16 | 2016-08-24 | 义乌华鼎锦纶股份有限公司 | High-shrinkage polyamide fiber and preparation method thereof |
-
2000
- 2000-01-25 JP JP2000015621A patent/JP2001207323A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006233015A (en) * | 2005-02-24 | 2006-09-07 | Bridgestone Corp | Rubber composition, vulcanized rubber and tire |
JP4679173B2 (en) * | 2005-02-24 | 2011-04-27 | 株式会社ブリヂストン | Rubber composition, vulcanized rubber and tire |
CN105887218A (en) * | 2016-04-16 | 2016-08-24 | 义乌华鼎锦纶股份有限公司 | High-shrinkage polyamide fiber and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5465929B2 (en) | Polyamide fiber, polyamide false twisted yarn and woven / knitted fabric | |
JPWO2017204047A1 (en) | Highly heat-shrinkable polyamide fiber and mixed yarn and woven fabric using the same | |
US6863977B2 (en) | Highly shrinkable acrylic fiber, pile compositions containing the same and napped fabrics made by using the compositions | |
KR101866688B1 (en) | Rayon-like polyester composite yarn having excellent melange effect, drapability and high elasticity and manufacturing method thereof | |
JP2001207323A (en) | Highly shrinkable hollow fiber | |
JP4639889B2 (en) | Polytrimethylene terephthalate extra fine yarn | |
JP3912065B2 (en) | Polyester blended yarn and false twisted yarn | |
JP3167677B2 (en) | Polyester irregular cross section fiber | |
KR100476471B1 (en) | Di-shrink blended yarn and its manufacturing method. | |
JP2000073231A (en) | Highly shrinkable nylon fiber and its production | |
JP2844680B2 (en) | Different fineness / different shrinkage mixed fiber and method for producing the same | |
KR20010082770A (en) | Texturized, combined polyester multifilament yarn and process for producing same | |
KR100776605B1 (en) | A fused and false twisted polyester yarn, and a process of preparing for the same | |
JP2005179815A (en) | Polyamide multifilament yarn and polyamide combined filament-textured yarn | |
KR102234800B1 (en) | Polyester blended filament yarn with natural thin and thick effect to improve the flexibility of the fabric and method for manufacturing thereof | |
JPH08246244A (en) | Heat adhesive conjugate filament yarn and sheet | |
JPH108345A (en) | Lightweight heat insulating fabric | |
JP2005113309A (en) | Modified cross-section polytrimethylene terephthalate fiber | |
KR102219084B1 (en) | Interlace composite yarn with high strength and elongation and method for producing the same | |
JP2003336137A (en) | Polyester combined filament yarn of different shrinkage | |
JP3469076B2 (en) | Slab-like polyester mixed fiber yarn having different shades and shades and method for producing the same | |
KR20160080532A (en) | Polyester blended filament yarn with natural thin and thick effect to improve the flexibility of the fabric and method for manufacturing thereof | |
JP3793369B2 (en) | Different shrinkage mixed yarn | |
JP4081338B2 (en) | Polypropylene-based fluid disturbed fiber and method for producing the same | |
JP2003239146A (en) | Polyester composite false twist yarn for cut pile woven or knitted fabric and method of production for the same |