JP7255029B2 - Method for producing CDP/PET bicomponent side-by-side composite fiber by direct drawing method - Google Patents

Method for producing CDP/PET bicomponent side-by-side composite fiber by direct drawing method Download PDF

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JP7255029B2
JP7255029B2 JP2022535862A JP2022535862A JP7255029B2 JP 7255029 B2 JP7255029 B2 JP 7255029B2 JP 2022535862 A JP2022535862 A JP 2022535862A JP 2022535862 A JP2022535862 A JP 2022535862A JP 7255029 B2 JP7255029 B2 JP 7255029B2
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山水 王
紅衛 范
方明 湯
元華 張
麗麗 王
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江蘇恒力化繊股▲ふん▼有限公司
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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
    • D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • 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
    • D01D5/08—Melt spinning methods
    • 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
    • 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
    • D10B2401/14—Dyeability

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Description

本発明は概してポリエステル繊維製造技術に関し、より詳しくは、一種のカチオン可染ポリエステル繊維（Cationic ＤyeＤPolyester, ＣＤＰ）とポリエチレンテレフタレート（Polyethylene terephthalate, ＰＥＴ）繊維との二成分複合繊維及びその製造方法に関する。 TECHNICAL FIELD The present invention generally relates to polyester fiber manufacturing technology, and more particularly to a kind of bicomponent composite fiber of cationic dyed polyester (CDP) and polyethylene terephthalate (PET) fiber and its manufacturing method.

合成繊維応用分野の持続的な廓大及び紡糸技術の発展と共に、過去20年間で様々な高付加価値を有する差別化繊維、いわゆる第二世代合成繊維の開発と応用が続いている。そのうち、複合紡糸はひときわ目立つ技術と知られている。複合紡糸は、種類、粘度あるいは割合の異なる二成分または二成分以上の繊維形成ポリマー融体・溶液を、それぞれの管路によって輸送し、さらに複数の分配板より組み立つ複合パックで分配し、口金板に到着する際にいろいろな形式で合流させて複合流体になさせ、最後に同じ吐出孔により圧出して一本の繊維にする。複合紡糸技術は繊維の物理的改質に重要な手段の一つとして、「天然の外観」と「高付加価値」を持つ合成繊維の開発において、重要な役割を果たしている。 With the continuous expansion of the synthetic fiber application field and the development of spinning technology, the development and application of various differentiated fibers with high added value, so-called second-generation synthetic fibers, have continued in the past 20 years. Among them, composite spinning is known as a prominent technology. Composite spinning transports fiber-forming polymer melts and solutions of two or more components with different types, viscosities, or ratios through individual pipelines, distributes them in composite packs assembled from multiple distribution plates, and spinnerets. Upon reaching the plate they are combined in various ways into a composite fluid and finally extruded through the same discharge hole into a single fiber. Composite spinning technology, as one of the important means of physical modification of fibers, plays an important role in the development of synthetic fibers with "natural appearance" and "high added value".

ＣＤＰ／ＰＥＴ複合繊維は異なる性能の同類繊維形成ポリマーの複合に属するが、その二成分は、比較的近い物性と比較的良い相溶性を持つために剥離が生じにくいので、繊維になると強い接着力を有する。よって、ＣＤＰ／ＰＥＴ複合繊維は優れた染色性能、弾性及び機械的性質を持って、衣装用生地に広く応用されている。 CDP/PET composite fiber belongs to the composite of similar fiber-forming polymers with different properties, but the two components have relatively similar physical properties and good compatibility, so it is difficult to separate, so when it becomes a fiber, it has strong adhesion. have Therefore, CDP/PET composite fibers have excellent dyeing performance, elasticity and mechanical properties, and are widely applied in clothing fabrics.

しかしながら、ＣＤＰ／ＰＥＴ複合繊維は編物特に平織りニットに応用されると編物の表面で不規則な帯状むらが不規則に発生してしまう。この問題はＣＤＰ／ＰＥＴ複合繊維編物の開発と使用を激しく制限する。 However, when the CDP/PET composite fiber is applied to a knitted fabric, especially a plain weave knit, irregular belt-like unevenness occurs irregularly on the surface of the knitted fabric. This problem severely limits the development and use of CDP/PET composite fiber knits.

それゆえ、不規則な帯状むらが避けられるＣＤＰ／ＰＥＴ並列型二成分複合繊維及びその製造方法の開発は意味深い課題である。 Therefore, the development of CDP/PET side-by-side bicomponent bicomponent fibers and methods for their production that avoids irregular banding is a significant challenge.

本発明は従来のＣＤＰ/ＰＥＴ並列型複合繊維の編物に応用する時の不規則な帯状むら問題を克服し、一種の直延伸法によるＣＤＰ／ＰＥＴ二成分複合繊維及びその製造方法を提供する。 The present invention overcomes the problem of irregular zonal unevenness in the application of conventional CDP/PET side-by-side conjugate fiber knit fabrics, and provides a CDP/PET bicomponent conjugate fiber by direct drawing and a method for producing the same.

このため本発明は、収縮挙動と収縮形態の異なる成分質量比の３：1～５：１のＣＤＰ／ＰＥＴ複合繊維と、成分質量比の１：３～１：５のＣＤＰ／ＰＥＴ複合繊維とを混在させて、単一複合繊維のような位整った螺旋形態状巻縮を破壊して、複合繊維編物の不規則な帯状むら問題を克服することで、これを課題解決のための手段とするものである。 For this reason, the present invention provides a CDP/PET conjugate fiber with a component mass ratio of 3:1 to 5:1 and a CDP/PET conjugate fiber with a component mass ratio of 1:3 to 1:5 that differ in shrinkage behavior and shrinkage form. is mixed to destroy the well-ordered helical crimps of a single composite fiber and overcome the problem of irregular belt-like unevenness in composite fiber knitted fabrics. It is something to do.

上記の目的を達成するために、本発明は以下の技術手段を採用する。 In order to achieve the above objects, the present invention employs the following technical means.

ＦＤＹ工程に従って、カチオン可染ポリエステル（Cationic ＤyeＤ Polyester, ＣＤＰ）融体とポリエチレンテレフタレート（Polyethylene terephthalate, ＰＥＴ）融体とを分配し、同一の紡糸口金上の吐出孔ｍと吐出孔ｎから圧出して、延伸糸（Fully OrienteＤ Yarn、ＦＤＹ）を生成した後、緩和熱処理を行い、直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維を得る、直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法であって、
ＰＥＴ融体の固有粘度は0.55～0.60ＤＬ／ｇであり、ＣＤＰ融体の固有粘度は0.70～0.75ＤＬ／ｇであり、
前記分配とは、ＣＤＰ融体を分配孔Ａにより、及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ分配するとともに、ＣＤＰ融体を分配孔Ｃにより、及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ分配することであり、
分配孔Ａと分配孔Ｂは高さが等しい円柱孔であり、分配孔Ａと分配孔Ｂの直径比は1.30～1.50：1であり、分配孔Ｃと分配孔Ｄは高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄの直径比は1：1.30～1.50である、
直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 According to the FDY process, a cationic dyed polyester (CDP) melt and a polyethylene terephthalate (PET) melt are distributed and extruded through outlet holes m and n on the same spinneret. , After generating a drawn yarn (Fully Oriented Yarn, FDY), it is subjected to relaxation heat treatment to obtain a CDP/PET bicomponent parallel type conjugate fiber by a direct drawing method. A manufacturing method comprising:
The intrinsic viscosity of the PET melt is 0.55-0.60 DL/g, the intrinsic viscosity of the CDP melt is 0.70-0.75 DL/g,
The distribution means that the CDP melt is distributed through the distribution hole A and the PET melt is distributed through the distribution hole B to the discharge hole m, and the CDP melt is discharged through the distribution hole C and the PET melt is discharged through the distribution hole D. to distribute to the pores n ;
The distribution holes A and B are cylindrical holes with the same height, the diameter ratio of the distribution holes A and B is 1.30 to 1.50:1, and the distribution holes C and D are cylindrical holes with the same height. and the diameter ratio of the distribution hole C and the distribution hole D is 1:1.30 to 1.50.
A method for producing a CDP/PET bicomponent side-by-side composite fiber by direct drawing.

具体的には、本発明においては、ＣＤＰ融体を分配孔ＡとＣにより、ＰＥＴ融体を分配孔ＢとＤにより分配し、分配孔の入口においてＣＤＰ融体とＰＥＴ融体の見掛け粘度差を５％以下にし、分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口では、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が５％以下であり、各分配孔は、高さが等しい円柱孔であり、分配孔ＡとＢの直径比は、分配孔ＢとＤの直径比と異なり、これにより吐出孔ｍに分配するＣＤＰ融体とＰＥＴ融体の質量比と、吐出孔ｎに分配するＣＤＰ融体とＰＥＴ融体の質量比とが異なり、一束のＣＤＰ／ＰＥＴ並列型複合繊維中に、二種類の異なるＣＤＰとＰＥＴの質量比が共存することを実現し、巻縮形態の違いが保証される。これに対応させて、分配孔及び導入孔の数量と位置関係を合理的に設定し、順調な融体分配を保証する。また、本発明においては、吐出孔ｍと吐出孔ｎとを同心円状により配列して、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであるようにして、ＣＤＰとＰＥＴの質量比が３：１～５：１のＣＤＰ／ＰＥＴ複合繊維が、ＣＤＰとＰＥＴの質量比が１：３～１：５のＣＤＰ／ＰＥＴ複合繊維の間に混在することを保証し、整った左右の螺旋形態を破壊する。また、本発明においては、スピニングビームＩ、ＩＩ及びＩＩＩの温度を合理的に設定し、ＰＥＴ融体の固有粘度（0.55～0.60ＤＬ／ｇ）とＣＤＰ融体の固有粘度（0.70～0.75ＤＬ／ｇ）を相互に配合し、吐出孔より圧出したＰＥＴ成分とＣＤＰ成分の見かけ粘度を互いに近づけ、各複合繊維の質量比を制御し、順調な紡糸を保証する。また、本発明においては、吐出孔の形状を調整する必要がなく、汎用の並列型複合吐出孔を用いることができる。また、本発明においては、ＦＤＹ工程を用い、紡糸工程のパラメータを合理的に設定することにより、巻縮性が良く、弾性が良好で、総合性能が良い繊維を製造する。 Specifically, in the present invention, the CDP melt is distributed through the distribution holes A and C, the PET melt is distributed through the distribution holes B and D, and the apparent viscosity difference between the CDP melt and the PET melt at the entrance of the distribution holes is 5% or less, and at the inlets of distribution hole A, distribution hole B, distribution hole C, and distribution hole D, the difference in apparent viscosity between the PET melt and the CDP melt is 5% or less, and each distribution hole has a high The diameter ratio of the distribution holes A and B is different from the diameter ratio of the distribution holes B and D, whereby the mass ratio of the CDP melt and the PET melt distributed to the discharge hole m and the discharge The mass ratio of the CDP melt and the PET melt distributed to the hole n is different, and two different mass ratios of CDP and PET coexist in one bundle of CDP/PET side-by-side composite fibers, A difference in crimp configuration is guaranteed. Correspondingly, the number and positional relationship of the distribution holes and introduction holes are set rationally to ensure smooth distribution of the melt. In the present invention, the ejection holes m and n are arranged concentrically, and the ejection holes on the same circle are either the ejection holes m or the ejection holes n. Then, CDP/PET composite fibers with a mass ratio of CDP to PET of 3:1 to 5:1 are mixed between CDP/PET composite fibers with a mass ratio of CDP to PET of 1:3 to 1:5. It guarantees and destroys a well-ordered left-right spiral form. In addition, in the present invention, the temperatures of the spinning beams I, II and III are set rationally, and the intrinsic viscosity of the PET melt (0.55-0.60 DL/g) and the intrinsic viscosity of the CDP melt (0.70-0.75 DL/g) g) is blended with each other, the apparent viscosities of the PET component and the CDP component extruded from the discharge holes are made close to each other, and the mass ratio of each conjugate fiber is controlled to ensure smooth spinning. Moreover, in the present invention, there is no need to adjust the shape of the discharge holes, and general-purpose parallel type composite discharge holes can be used. In addition, in the present invention, by using the FDY process and rationally setting the parameters of the spinning process, a fiber with good crimpability, good elasticity and good overall performance can be produced.

発明原理は以下の通りである。 The principle of the invention is as follows.

従来のＣＤＰ/ＰＥＴ複合繊維において巻縮によるねじり応力は均しいから、編み糸にすれば一部の線分は整然たるコイル状巻縮が生じるため、他の部分に対して異なる配向状態と力学的応答挙動を持つ。よって、ＣＤＰ/ＰＥＴ複合繊維で編物を作る時に繊維の光反射効果と張力が不均一だから、編物の表面で突起または陥没、及び明暗の不規則に変化する縞模様すなわち不規則な帯状むらが現れる。 Since the torsional stress due to crimping is uniform in the conventional CDP/PET composite fiber, if it is made into a knitting yarn, some of the line segments will be neatly crimped in a coiled shape, so that the orientation and dynamics will be different from those of the other segments. have a responsive behavior. Therefore, when a CDP/PET composite fiber is used to fabricate a knitted fabric, the light reflection effect and tension of the fiber are uneven, resulting in protrusions or depressions, and striped patterns that change light and dark irregularly, i.e., irregular band-like unevenness on the surface of the knitted fabric. .

紡糸工程において、ポリマー融体は持続的に流動している。融体流量を制御するには、円穴内部で流動する融体の流量計算式

Figure 0007255029000001
に基づく考えがある。上式中には、ΔＱが融体の流量、Ｄが円穴の直径、μが融体の見掛け粘度、ｌが円穴の長さ、ΔＰが円穴両端の圧力差である。上式により、ΔＰ、μ及びｌをそれぞれ同じにすれば、このような二本の円穴を経る融体の流量の比は、円穴直径の４乗の比に比例する。 During the spinning process, the polymer melt is in constant flow. To control the melt flow rate, the flow rate calculation formula for the melt flowing inside the circular hole is
Figure 0007255029000001
 There is an idea based on In the above equation, ΔQ is the flow rate of the melt, D is the diameter of the circular hole, μ is the apparent viscosity of the melt, l is the length of the circular hole, and ΔP is the pressure difference between both ends of the circular hole. According to the above equation, if ΔP, μ and l are the same, the ratio of the flow rate of the melt passing through such two circular holes is proportional to the ratio of the diameters of the circular holes to the power of four.

本発明のＦＤＹ工程は、ＣＤＰ融体とＰＥＴ融体とを分配した後、同じ口金板に位置する吐出孔ｍと吐出孔ｎにより圧出して並列型自発巻縮弾性繊維にする。そのうち、分配は、ＣＤＰ融体を分配孔Ａにより、ＰＥＴ融体を分配孔Ｂにより同時に吐出孔ｍへ導入し、並びにＣＤＰ融体を分配孔Ｃにより、ＰＥＴ融体を分配孔Ｄにより同時に吐出孔ｎへ導入する。 In the FDY process of the present invention, after the CDP melt and the PET melt are distributed, they are compressed through the outlet holes m and n located on the same spinneret plate to form parallel self-crimping elastic fibers. In the distribution, the CDP melt is introduced through the distribution hole A and the PET melt through the distribution hole B into the discharge hole m simultaneously, and the CDP melt through the distribution hole C and the PET melt through the distribution hole D are discharged simultaneously. It is introduced into the hole n.

分配孔Ａ（またはＣ）を経るＣＤＰ融体と、分配孔Ｂ（またはＤ）を経るＰＥＴ融体との流量比は、

Figure 0007255029000002
と表記でき、そのうち、ΔＱ１、Ｄ1、μ1及びl1は分配孔Ａ（またはＣ）に属し、ΔＱ２、Ｄ２、μ２及びl２は分配孔Ｂ（またはＤ）に属する。本発明においては、紡糸融体の固有粘度の選択とスピニングビームＩ、ＩＩ及びＩＩＩの温度の制御により、分配孔Ａ、Ｂ、Ｃ及びＤの入口においてＰＥＴ融体とＣＤＰ融体との見掛け粘度差を５％以下にし、よって、μ１とμ２が大体同一にする。一方、分配孔Ａ、Ｂ、Ｃ及びＤは分配板に位置して寸法が小さいため、分配孔Ａを経たＣＤＰ融体の圧力降下と分配孔Ｂを経たＰＥＴ融体の圧力降下、または分配孔Ｃを経たＣＤＰ融体の圧力降下と分配孔Ｄを経たＰＥＴ融体の圧力降下は大体同一にし、よって、ΔＰ1とΔＰ2がほぼ等しい。なお、分配孔Ａと分配孔Ｂが等高、分配孔Ｃと分配孔Ｄが等高だから、l1とl2が等しい。 The flow rate ratio between the CDP melt passing through distribution hole A (or C) and the PET melt passing through distribution hole B (or D) is
Figure 0007255029000002
 where ΔQ1, D1, μ1 and l1 belong to distribution pore A (or C) and ΔQ2, D2, μ2 and 12 belong to distribution pore B (or D). In the present invention, by selecting the intrinsic viscosity of the spinning melt and controlling the temperature of the spinning beams I, II and III, the apparent viscosities of the PET and CDP melts at the inlets of the distribution holes A, B, C and D Make the difference less than 5%, so that μ1 and μ2 are approximately the same. On the other hand, since the distribution holes A, B, C and D are located in the distribution plate and have small dimensions, the pressure drop of the CDP melt through the distribution hole A and the pressure drop of the PET melt through the distribution hole B, or the pressure drop of the PET melt through the distribution hole The pressure drop of the CDP melt through C and the pressure drop of the PET melt through distribution hole D are made approximately the same, so .DELTA.P1 and .DELTA.P2 are approximately equal. Since the distribution holes A and B are at the same height, and the distribution holes C and D are at the same height, l1 and l2 are equal.

上記の条件によって計算すると、ΔＱ１／ΔＱ２はΔＤ１４／ΔＤ２４とほぼ等しいことがわかっている。したがって、分配孔Ａと分配孔Ｂとの直径比が1.30～1.50：１とすれば、Ａを経たＣＤＰ融体とＢを経たＰＥＴ融体との流量比は約3：1～5：1になり、最後に吐出孔ｍより圧出した単糸におけるＣＤＰとＰＥＴとの質量比は3：1～5：1になる。同じ理由によって、分配孔Ｃと分配孔Ｄとの直径比が1：1.30～1.50とすれば、Ｃを経たＣＤＰ融体とＤを経たＰＥＴ融体との流量比は約1：3～1：5になり、さらに吐出孔ｎより圧出した単糸におけるＣＤＰとＰＥＴとの質量比は1：3～1：５になる。 It is known that ΔQ1/ΔQ2 is approximately equal to ΔD1 4 /ΔD2 4 when calculated according to the above conditions. Therefore, if the diameter ratio between distribution holes A and B is 1.30-1.50:1, the flow rate ratio between the CDP melt that has passed through A and the PET melt that has passed through B will be about 3:1-5:1. Finally, the mass ratio of CDP and PET in the single yarn extruded from the discharge hole m is 3:1 to 5:1. For the same reason, if the diameter ratio between distribution holes C and D is 1:1.30-1.50, the flow rate ratio between the CDP melt through C and the PET melt through D will be about 1:3-1:1. 5, and the mass ratio of CDP and PET in the single yarn extruded from the discharge hole n is 1:3 to 1:5.

そのうえ、本発明の異なる熱収縮率を持つＣＤＰとＰＥＴは、同じ吐出孔より圧出された際に、相溶性があるために一緒に接合できる。こんな接合と異なる熱収縮率と共に、ＣＤＰ／ＰＥＴ複合繊維は熱処理を経たら自発巻縮が生じて弾性を得る。この巻縮の具体的な形態は、より高い収縮率を有するＣＤＰが内側、より低い収縮率を持つＰＥＴが外側にあるコイルである。 Moreover, the CDP and PET having different thermal contraction rates of the present invention can be bonded together due to their compatibility when extruded through the same discharge hole. In addition to such bonding and different thermal contraction rates, the CDP/PET composite fiber undergoes spontaneous crimping after heat treatment to obtain elasticity. A specific form of this crimp is a coil with a higher shrinkage CDP inside and a lower shrinkage PET outside.

本発明の複合繊維においては、ＣＤＰとＰＥＴとの質量比が３：１～５：１及び１：３～１：５とする二種類の複合フィラメントが混在するので、各フィラメントは互いに違い巻縮形態がしって、普通のＣＤＰ／ＰＥＴ複合繊維のような位整った螺旋形態構造を打ち破る。よって、緩和熱処理後本発明における並列型二成分複合繊維は不規則な巻縮配向が生じ、編物に応用されると不規則な帯状むらが起こらない。 In the conjugate fiber of the present invention, two types of conjugate filaments having a mass ratio of CDP and PET of 3:1 to 5:1 and 1:3 to 1:5 are mixed, so each filament has a different crimp. The morphology is known and breaks the ordered helical morphology structure of common CDP/PET composite fibers. Therefore, after the relaxation heat treatment, the side-by-side bicomponent conjugate fibers of the present invention have an irregular crimped orientation, and when applied to a knitted fabric, no irregular band-like unevenness occurs.

本発明に係る好適態様を以下に示す。 Preferred embodiments of the present invention are shown below.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、ＰＥＴ融体とＣＤＰ融体との質量比は５０：５０である。 In the method for producing the CDP/PET bicomponent conjugate fiber by direct drawing, the mass ratio of the PET melt and the CDP melt is 50:50.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、吐出孔ｍまたは吐出孔ｎは、円形、楕円形、あるいは「８」形の吐出孔である。 In the method for producing the CDP/PET bicomponent conjugate fiber by the direct drawing method, the ejection hole m or the ejection hole n is a circular, oval or "8" shaped ejection hole.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、すべての吐出孔は同心円を成すように分布し、同一円上の吐出孔は、いずれも吐出孔ｍであるか、いずれも吐出孔ｎである。したがって、ＣＤＰ／ＰＥＴ質量比が３：１～５：１の複合繊維とＣＤＰ／ＰＥＴ質量比が１：３～１：５の複合繊維をよく混在させることでき、整った左右の螺旋形態を破壊できる。 In the method for producing a CDP/PET bicomponent conjugate fiber by the direct drawing method, all the ejection holes are distributed so as to form concentric circles, and all the ejection holes on the same circle are the ejection holes m, or hole n. Therefore, the conjugate fiber with a CDP/PET mass ratio of 3:1 to 5:1 and the conjugate fiber with a CDP/PET mass ratio of 1:3 to 1:5 can be well mixed, and the well-ordered right and left spiral shape can be destroyed. can.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、吐出孔ｍは、導入孔E、過渡孔及びキャピラリーの順に構成され、吐出孔ｎは、導入孔Ｆ、過渡孔及びキャピラリーの順に構成され、前記導入孔Eは分配孔Ａ及び分配孔Ｂと同時に接続し、導入孔Ｆは分配孔Ｃ及び分配孔Ｄと同時に接続し、分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔ＤはスピニングビームＩＩＩ中の分配板に位置し、ＰＥＴ融体はスピニングビームＩにより分配孔Ｂと分配孔Ｄへ送られ、ＣＤＰ融体はスピニングビームＩＩにより分配孔Ａと分配孔Ｃへ送られる。 In the method for producing a CDP/PET bicomponent conjugate fiber by the direct drawing method, the discharge hole m is composed of the introduction hole E, the transition hole and the capillary in this order, and the discharge hole n is composed of the introduction hole F, the transition hole and the capillary in this order. The introduction hole E is connected to the distribution hole A and the distribution hole B at the same time, the introduction hole F is connected to the distribution hole C and the distribution hole D at the same time, the distribution hole A, the distribution hole B, the distribution hole C and the distribution hole D is located at the distribution plate in spinning beam III, the PET melt is sent by spinning beam I to distribution holes B and D, and the CDP melt is sent to distribution holes A and C by spinning beam II. .

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、ＰＥＴ融体の固有粘度は0.55～0.60ＤＬ／ｇであり、ＣＤＰ融体の固有粘度は0.70～0.75ＤＬ／ｇであり、スピニングビームＩの温度は280～285℃であり、スピニングビームＩＩの温度は275～280℃であり、スピニングビームＩＩＩの温度は278～282℃である。 In the method for producing a CDP/PET bicomponent conjugate fiber by the direct drawing method, the intrinsic viscosity of the PET melt is 0.55-0.60 DL/g, the intrinsic viscosity of the CDP melt is 0.70-0.75 DL/g, and the spinning The temperature of beam I is 280-285°C, the temperature of spinning beam II is 275-280°C, and the temperature of spinning beam III is 278-282°C.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、ＦＤＹ工程に関するパラメータは、冷却温度が23～25℃、インターレースノズル圧力が0.20～0.30MPa、第１ローラ速度は2400～2500m/min、第１ローラ温度が90～95℃、第２ローラ速度が4000～4200m/min、第２ローラ温度が160～180℃、巻取速度が3930～4120m/minであり、緩和熱処理に関する処理温度が９０～１２０℃、処理時間が20～30minである。 In the method for producing the CDP/PET bicomponent conjugate fiber by the direct drawing method, the parameters for the FDY process are cooling temperature of 23-25°C, interlace nozzle pressure of 0.20-0.30 MPa, and first roller speed of 2400-2500 m/min. , the first roller temperature is 90-95℃, the second roller speed is 4000-4200m/min, the second roller temperature is 160-180℃, the winding speed is 3930-4120m/min, and the treatment temperature for the relaxation heat treatment is The temperature is 90-120°C and the treatment time is 20-30 minutes.

本発明は、前記好適態様のいずれか一項に記載する方法で製造するＣＤＰ/ＰＥＴ二成分複合繊維であって、複数のＰＥＴ／ＣＤＰ並列型複合繊維からなり、同一の繊維束において、一部のＰＥＴ／ＣＤＰ並列型複合繊維では、ＣＤＰとＰＥＴの質量比が3：1～5：1であり、他の一部のＰＥＴ／ＣＤＰ並列型複合繊維では、ＣＤＰとＰＥＴの質量比が1：3～1：5であり、直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維における各フィラメントの巻縮方向が不規則に分布する。 The present invention provides a CDP/PET bicomponent conjugate fiber produced by the method according to any one of the above preferred embodiments, comprising a plurality of PET/CDP side-by-side conjugate fibers, in the same fiber bundle, In the PET/CDP side-by-side conjugate fibers, the mass ratio of CDP to PET is 3:1 to 5:1, and in some other PET/CDP side-by-side conjugate fibers, the mass ratio of CDP to PET is 1: The ratio is 3 to 1:5, and the direction of crimping of each filament in the CDP/PET bicomponent conjugate fiber obtained by direct drawing method is irregularly distributed.

好ましくは、直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維について、巻縮収縮率は48～53％、巻縮安定度は80～83％、巻縮伸長率は90～93％、巻縮弾性回復率は88～92％である。 Preferably, the CDP/PET bicomponent fiber obtained by direct drawing has a crimp shrinkage of 48-53%, a crimp stability of 80-83%, a crimp elongation of 90-93%, and a crimp elastic recovery. The rate is 88-92%.

また、好ましくは、直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維について、破断強度は2.7～3.0ｃN／Ｄｔｅｘ、破断伸長率は40.0±4.0％、総繊度が100～200Ｄｔｅｘである。 Further, preferably, the CDP/PET bicomponent conjugate fiber obtained by direct drawing has a breaking strength of 2.7 to 3.0 cN/Dtex, a breaking elongation of 40.0±4.0%, and a total fineness of 100 to 200 Dtex.

前記直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維より作った編物の不規則な帯状むらの検測方法は、以下の通りである：まず編物の表面写真を撮影しさらにそれをグレースケール画像(黒の０から白の２５５まで２５６段階と示す)に変換し、次にグレースケール画像の1回目と2回目の処理を行ってパラメータＤを計算し、最後にパラメータＤで不規則な帯状むらの程度を表記する。そのうちに、グレースケール画像は帯状むらに属する低いグレースケール区域（区域Iと表記する）、及びむらない地方に属する高いグレースケール区域（区域IIと表記する）と低いグレースケール区域（区域IIIと表記する）を含み、区域IIは1回目の処理さらに区域IIIは2回目の処理によって白点に変換させ（グレースケールを２５５にする）、そして区域Iを黒点に変換させ（グレースケールを０にする）、最後に、Aは総点数およびBは黒点数として算式Ｄ＝ΣＢ／ＡによりパラメータＤを得る。 The method for inspecting the irregular band-like unevenness of the knitted fabric made of the CDP/PET bicomponent composite fiber by the direct drawing method is as follows: 256 steps from 0 for white to 255 for white), then perform the first and second processing of the grayscale image to calculate the parameter D, and finally the parameter D, the degree of irregular banding. notation. Over time, the grayscale image is divided into a low grayscale area (denoted as area I) belonging to the banded area, and a high grayscale area (denoted as area II) and a low grayscale area (denoted as area III) belonging to the uneven region. ), area II is converted to a white point (grayscale is set to 255) by the first process, area III is converted to a white point (grayscale is set to 255) by the second process, and area I is converted to a black point (grayscale is set to 0 ), and finally, the parameter D is obtained by the formula D=ΣB/A, where A is the total score and B is the black dot number.

Ｄは３％以上にすれば帯状むらが生じることが判定でき、１０％になれば帯状むらの「深刻な状態」に達することが言える。本発明の直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維より作ってあげる編物のＤは１％以下であり、帯状むらの問題を克服するのが結論できる。 If D is 3% or more, it can be determined that belt-like unevenness occurs, and if D reaches 10%, it can be said that the "serious state" of belt-like unevenness is reached. It can be concluded that the D of the knitted fabric made from the CDP/PET bicomponent conjugate fiber by the straight drawing method of the present invention is 1% or less, and the problem of belt-like unevenness can be overcome.

本発明の利点としては、
（1）本発明に提出した直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法において、異なる直径の分配孔を採用して得た複合繊維の成分比を異なるようにして、整った螺旋形態のような巻縮形態を避けて、不規則な帯状むら問題が克服できる。
（２）本発明に提出した製造方法による直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維は、優れた巻縮性、弾性などの総合性能を有し、広く応用できる。 Advantages of the present invention include:
(1) In the method for producing CDP/PET bicomponent conjugated fiber by direct drawing method proposed in the present invention, the composition ratio of the conjugated fiber obtained by adopting distribution holes with different diameters is different to obtain a well-ordered spiral shape. Irregular banding problems can be overcome by avoiding crimped forms such as
(2) The CDP/PET bicomponent conjugate fiber produced by the direct drawing method according to the production method proposed in the present invention has excellent overall performance such as crimpability and elasticity, and can be widely applied.

本発明における紡糸融体分配の見取図であり、そのうちにＡ、Ｂ、Ｃ及びＤは互いに独立の分配孔で、EとFは互いに独立の導入孔である。Fig. 2 is a schematic diagram of the spinning melt distribution in the present invention, in which A, B, C and D are independent distribution holes, and E and F are independent introduction holes;

以下、実施例を挙げてさらに詳細に本発明を説明するが、本発明は、その要旨を超えない限り、以下の実施例によって限定されるものではない。なお、本発明の内容を読んだこの分野の技術者がいろいろと本発明を改正しても、それは本発明と等価形のものとして、本発明の請求の範囲内に入るものとする。なお、実施例における種々の物性および特性の測定方法は下記のとおりである。 EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited by the following examples as long as the gist thereof is not exceeded. It should be noted that even if a person skilled in the art who has read the contents of the present invention modifies the present invention in various ways, it is considered to be equivalent to the present invention and falls within the scope of the present invention. Methods for measuring various physical properties and characteristics in Examples are as follows.

本発明における巻縮収縮率と巻縮安定度は中国国家標準規格ＧＢ６５０６－２００１の「合成繊維変形糸巻縮性能の試験方法」によって測定する。 The crimping shrinkage rate and crimping stability in the present invention are measured according to Chinese National Standard GB6506-2001 "Testing method for synthetic fiber deformation yarn crimping performance".

巻縮伸長率（変形糸の弾性と巻縮程度を示すことで、変形糸に標準初荷重を与えるときの糸長と、さらに（より高い）伸長荷重を与えるときの糸長の差の、標準初荷重下の糸長に対する百分率である）及び巻縮弾性回復率の測定方法としては、
まず約５０ｃｍの繊維サンプルを１００℃の水で３０minかけて熱処理して自然乾燥し、次に約３０ｃｍの部分を切り取って、一端を固定して、そこから２０ｃｍの位置を表記して、他の端に０．００１８ｃＮ／Ｄｔｅｘの標準初荷重を与えて、３０ｓを経た際に固定端から表記点までの糸長を初期長l1と記録し、さらに荷重を０．０９ｃＮ／Ｄｔｅｘと変換して、３０ｓを経た際に固定端から表記点までの糸長を荷重長l2と記録し、最後に荷重を除いて、２minの回復を経た後、０．００１８ｃＮ／Ｄｔｅｘの標準初荷重を再び加えて、３０ｓを経た際に固定端から表記点までの糸長を回復長l3と記録し、そして以下の式
CE = (l2-l1)/l1
SR = (l2-l3)/(l2-l1)
で巻縮伸長率CEと巻縮弾性回復率SRを計算することである。 Crimping elongation ratio (indicating the elasticity and degree of crimping of the deformed yarn), the standard It is a percentage of the yarn length under the initial load) and the crimp elastic recovery rate is measured as follows.
First, a fiber sample of about 50 cm is heat-treated in water at 100 ° C. for 30 minutes and dried naturally, then a portion of about 30 cm is cut off, one end is fixed, and the position of 20 cm from there is indicated, and the other Apply a standard initial load of 0.0018 cN/Dtex to the end, record the yarn length from the fixed end to the marking point after 30 seconds as the initial length l 1 , and convert the load to 0.09 cN/Dtex. , The yarn length from the fixed end to the notation point after 30 s was recorded as the load length l 2 , and the load was finally removed, and after 2 min of recovery, a standard initial load of 0.0018 cN / Dtex was applied again. Then, the yarn length from the fixed end to the marked point after 30 s is recorded as the recovery length l 3 , and the following formula
CE = ( l2 - l1 )/ l1
SR = ( l2 - l3 )/( l2 - l1 )
is to calculate the crimp elongation rate CE and the crimp elastic recovery rate SR.

実施例１
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.73ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.56ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
図１に示すように、分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させる；
分配孔Ａと分配孔Ｂは直径比を1.5：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比を１：1.5とする高さが等しい円柱孔であり；
吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８２℃、２７９℃、２８０℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が５％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が25℃、インターレースノズル圧力が0.3MPa、第１ローラ速度が2430m/min、第１ローラ温度が94℃、第２ローラ速度が4000m/min、第２ローラ温度が164℃、巻取速度が3930m/minである。
（２）そして、上記FＤYに９０℃と30minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成され、巻縮収縮率が52％、巻縮安定度が80％、巻縮伸長率が91％、巻縮弾性回復率が92％、破断強度が2.7ｃN／Ｄｔｅｘ、破断伸長率が44％、総繊度が108Ｄｔｅｘである
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 1
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distributing a CDP melt (having an intrinsic viscosity of 0.73 DL/g) and a PET melt (having an intrinsic viscosity of 0.56 DL/g) with a mass ratio of 50:50, and forming a circular discharge hole m and a circular FDY is obtained by pressing out from the discharge hole n. Among them
As shown in FIG. 1, the distribution causes the CDP melt to be transported by distribution hole A and the PET melt by distribution hole B to discharge hole m, while the CDP melt by distribution hole C and the PET melt by distribution hole C. transported by D to outlet port n;
Distribution hole A and distribution hole B are equal height cylindrical holes with a diameter ratio of 1.5:1, distribution hole C and distribution hole D are equal height cylindrical holes with a diameter ratio of 1:1.5;
The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 282° C., 279° C. and 280° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 5%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 25°C, the interlace nozzle pressure is 0.3MPa, the first roller speed is 2430m/min, the first roller temperature is 94°C, the second roller speed is 4000m/min, the second roller temperature is 164°C, Winding speed is 3930m/min.
(2) Then, the above FDY is subjected to a relaxation heat treatment at 90°C for 30 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 52%, crimp stability is 80%, crimp elongation rate is 91%, and crimp elastic recovery rate is 92%. %, a breaking strength of 2.7 cN/Dtex, a breaking elongation of 44%, and a total fineness of 108 Dtex.

実施例２
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.73ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.6ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.3：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.3とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８５℃、２７９℃、２８２℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.9％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が25℃、インターレースノズル圧力が0.3MPa、第１ローラ速度が2500m/min、第１ローラ温度が95℃、第２ローラ速度が4140m/min、第２ローラ温度が176℃、巻取速度が4070m/minである。
（２）そして、上記FＤYに１１９℃と21minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が50％、巻縮安定度が82％、巻縮伸長率が90％、巻縮弾性回復率が90％、破断強度が2.7ｃN／Ｄｔｅｘ、破断伸長率が41％、総繊度が108Ｄｔｅｘとする
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 2
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distributing a CDP melt (having an intrinsic viscosity of 0.73 DL/g) and a PET melt (having an intrinsic viscosity of 0.6 DL/g) with a mass ratio of 50:50, and forming a circular discharge hole m and a circular FDY is obtained by pressing out from the discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
Distribution hole A and distribution hole B are equal height cylindrical holes with a diameter ratio of 1.3:1, distribution hole C and distribution hole D are equal height cylindrical holes with a diameter ratio of 1:1.3; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 285° C., 279° C. and 282° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.9%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 25°C, the interlace nozzle pressure is 0.3MPa, the first roller speed is 2500m/min, the first roller temperature is 95°C, the second roller speed is 4140m/min, the second roller temperature is 176°C, Winding speed is 4070m/min.
(2) Then, the FDY was subjected to a relaxation heat treatment at 119°C for 21 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 50%, crimp stability is 82%, crimp elongation rate is 90%, crimp elasticity A CDP/PET bicomponent conjugate fiber obtained by a direct drawing method having a recovery rate of 90%, a breaking strength of 2.7 cN/Dtex, a breaking elongation of 41% and a total fineness of 108 Dtex is obtained.

実施例３
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.75ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.57ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.4：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.4とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８３℃、２８０℃、２８１℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.8％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が23℃、インターレースノズル圧力が0.2MPa、第１ローラ速度が2480m/min、第１ローラ温度が92℃、第２ローラ速度が4170m/min、第２ローラ温度が180℃、巻取速度が4100m/minとする。
（２）そして、上記FＤYに９０℃と30minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が53％、巻縮安定度が80％、巻縮伸長率が92％、巻縮弾性回復率が92％、破断強度が2.7ｃN／Ｄｔｅｘ、破断伸長率が40％、総繊度が124Ｄｔｅｘとする
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 3
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) A CDP melt (with an intrinsic viscosity of 0.75 DL/g) and a PET melt (with an intrinsic viscosity of 0.57 DL/g) having a mass ratio of 50:50 are distributed, and a circular discharge hole m and a circular FDY is obtained by pressing out from the discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
The distribution holes A and B are equal height cylindrical holes with a diameter ratio of 1.4:1, and the distribution holes C and D are equal height cylindrical holes with a diameter ratio of 1:1.4; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 283° C., 280° C. and 281° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.8%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 23°C, the interlace nozzle pressure is 0.2MPa, the first roller speed is 2480m/min, the first roller temperature is 92°C, the second roller speed is 4170m/min, the second roller temperature is 180°C, Take up speed is 4100m/min.
(2) Then, the above FDY is subjected to a relaxation heat treatment at 90°C for 30 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 53%, crimp stability is 80%, crimp elongation rate is 92%, crimp elasticity A CDP/PET bicomponent conjugate fiber obtained by a direct drawing method having a recovery rate of 92%, a breaking strength of 2.7 cN/Dtex, a breaking elongation of 40% and a total fineness of 124 Dtex is obtained.

実施例４
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.7ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.57ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.4：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.4とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８３℃、２７５℃、２８２℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.9％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が24℃、インターレースノズル圧力が0.3MPa、第１ローラ速度が2400m/min、第１ローラ温度が90℃、第２ローラ速度が4100m/min、第２ローラ温度が160℃、巻取速度が4030m/minである。
（２）そして、上記FＤYに９５℃と28minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が49％、巻縮安定度が80％、巻縮伸長率が92％、巻縮弾性回復率が89％、破断強度が2.7ｃN／Ｄｔｅｘ、破断伸長率が39％、総繊度が108Ｄｔｅｘである
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 4
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distribute a CDP melt (with an intrinsic viscosity of 0.7 DL/g) and a PET melt (with an intrinsic viscosity of 0.57 DL/g) at a mass ratio of 50:50, and FDY is obtained by pressing out from the discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
The distribution holes A and B are equal height cylindrical holes with a diameter ratio of 1.4:1, and the distribution holes C and D are equal height cylindrical holes with a diameter ratio of 1:1.4; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 283° C., 275° C. and 282° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.9%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 24°C, the interlaced nozzle pressure is 0.3MPa, the first roller speed is 2400m/min, the first roller temperature is 90°C, the second roller speed is 4100m/min, the second roller temperature is 160°C, Winding speed is 4030m/min.
(2) Then, the FDY was subjected to a relaxation heat treatment at 95°C for 28 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 49%, crimp stability is 80%, crimp elongation rate is 92%, crimp elasticity A CDP/PET bicomponent conjugate fiber obtained by direct drawing method having a recovery rate of 89%, a breaking strength of 2.7 cN/Dtex, a breaking elongation of 39% and a total fineness of 108 Dtex is obtained.

実施例５
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.72ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.6ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.5：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.5とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８３℃、２７７℃、２７８℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.7％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が25℃、インターレースノズル圧力が0.2MPa、第１ローラ速度が2490m/min、第１ローラ温度が91℃、第２ローラ速度が4190m/min、第２ローラ温度が168℃、巻取速度が4120m/minである。
（２）そして、上記FＤYに１０２℃と25minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が48％、巻縮安定度が80％、巻縮伸長率が93％、巻縮弾性回復率が88％、破断強度が2.7ｃN／Ｄｔｅｘ、破断伸長率が39％、総繊度が100Ｄｔｅｘである
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 5
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distribute a CDP melt (with an intrinsic viscosity of 0.72 DL/g) and a PET melt (with an intrinsic viscosity of 0.6 DL/g) at a mass ratio of 50:50, and FDY is obtained by pressing out from the discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
The distribution holes A and B are equal height cylindrical holes with a diameter ratio of 1.5:1, and the distribution holes C and D are equal height cylindrical holes with a diameter ratio of 1:1.5; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 283° C., 277° C. and 278° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.7%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 25°C, the interlaced nozzle pressure is 0.2MPa, the first roller speed is 2490m/min, the first roller temperature is 91°C, the second roller speed is 4190m/min, the second roller temperature is 168°C, Winding speed is 4120m/min.
(2) Then, the FDY was subjected to a relaxation heat treatment at 102°C for 25 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 48%, crimp stability is 80%, crimp elongation rate is 93%, crimp elasticity A CDP/PET bicomponent conjugate fiber obtained by direct drawing method having a recovery rate of 88%, a breaking strength of 2.7 cN/Dtex, a breaking elongation of 39% and a total fineness of 100 Dtex is obtained.

実施例６
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.72ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.58ＤＬ／ｇとする）とを分配し、円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.3：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.3とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８３℃、２７７℃、２８１℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.6％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が25℃、インターレースノズル圧力が0.2MPa、第１ローラ速度が2440m/min、第１ローラ温度が93℃、第２ローラ速度が4150m/min、第２ローラ温度が176℃、巻取速度が4080m/minである。
（２）そして、上記FＤYに１１０℃と23minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が50％、巻縮安定度が81％、巻縮伸長率が93％、巻縮弾性回復率が90％、破断強度が2.9ｃN／Ｄｔｅｘ、破断伸長率が38％、総繊度が132Ｄｔｅｘである、
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 6
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distributing a CDP melt (having an intrinsic viscosity of 0.72 DL/g) and a PET melt (having an intrinsic viscosity of 0.58 DL/g) with a mass ratio of 50:50, and forming a circular discharge hole m and a circular FDY is obtained by pressing out from the discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
Distribution hole A and distribution hole B are equal height cylindrical holes with a diameter ratio of 1.3:1, distribution hole C and distribution hole D are equal height cylindrical holes with a diameter ratio of 1:1.3; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 283° C., 277° C. and 281° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.6%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 25°C, the interlace nozzle pressure is 0.2MPa, the first roller speed is 2440m/min, the first roller temperature is 93°C, the second roller speed is 4150m/min, the second roller temperature is 176°C, Winding speed is 4080m/min.
(2) Then, the above FDY was subjected to a relaxation heat treatment at 110°C for 23 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 50%, crimp stability is 81%, crimp elongation rate is 93%, crimp elasticity The recovery rate is 90%, the breaking strength is 2.9 cN / Dtex, the breaking elongation rate is 38%, and the total fineness is 132 Dtex.
A CDP/PET bicomponent composite fiber is obtained by direct drawing.

実施例７
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.7ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.58ＤＬ／ｇとする）とを分配し、橢円形吐出孔ｍ及び円形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.3：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.3とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８３℃、276℃、２８２℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.５％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が25℃、インターレースノズル圧力が0.３MPa、第１ローラ速度が2450m/min、第１ローラ温度が93℃、第２ローラ速度が4180m/min、第２ローラ温度が173℃、巻取速度が4110m/minである。
（２）そして、上記FＤYに１１１℃と２２minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が48％、巻縮安定度が8２％、巻縮伸長率が9２％、巻縮弾性回復率が88％、破断強度が2.9ｃN／Ｄｔｅｘ、破断伸長率が38％、総繊度が160Ｄｔｅｘである
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 7
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distribute a CDP melt (having an intrinsic viscosity of 0.7 DL/g) and a PET melt (having an intrinsic viscosity of 0.58 DL/g) at a mass ratio of 50:50, and FDY is obtained by pressing out through a circular discharge hole n. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
Distribution hole A and distribution hole B are equal height cylindrical holes with a diameter ratio of 1.3:1, distribution hole C and distribution hole D are equal height cylindrical holes with a diameter ratio of 1:1.3; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 283° C., 276° C. and 282° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.5%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 25°C, the interlaced nozzle pressure is 0.3MPa, the first roller speed is 2450m/min, the first roller temperature is 93°C, the second roller speed is 4180m/min, and the second roller temperature is 173°C. , the winding speed is 4110m/min.
(2) Then, the above FDY was subjected to a relaxation heat treatment at 111°C for 22 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 48%, crimp stability is 82%, crimp elongation rate is 92%, crimp elasticity A CDP/PET bicomponent conjugate fiber obtained by direct drawing method having a recovery rate of 88%, a breaking strength of 2.9 cN/Dtex, a breaking elongation of 38% and a total fineness of 160 Dtex is obtained.

実施例8
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維の製造方法は、以下の通りである。
（1）質量比の50：50のＣＤＰ融体（固有粘度は0.7ＤＬ／ｇとする）とＰＥＴ融体（固有粘度は0.56ＤＬ／ｇとする）とを分配し、橢円形吐出孔ｍ及び「8」形吐出孔ｎにより圧出して、ＦＤＹにする。そのうち、
分配は、ＣＤＰ融体を分配孔Ａにより及びＰＥＴ融体を分配孔Ｂにより吐出孔ｍへ輸送させ、同時にＣＤＰ融体を分配孔Ｃにより及びＰＥＴ融体を分配孔Ｄにより吐出孔ｎへ輸送させることであり；
分配孔Ａと分配孔Ｂは直径比が1.4：１とする高さが等しい円柱孔であり、分配孔Ｃと分配孔Ｄは直径比が１：1.4とする高さが等しい円柱孔であり； 吐出孔ｍは導入孔E、過渡孔及びキャピラリーの順で構成され、吐出孔ｎは導入孔F、過渡孔及びキャピラリーの順で構成され、導入孔Eは分配孔Ａ及び分配孔Ｂと接続させ、導入孔Fは分配孔C及び分配孔Ｄと接続させ、分配孔Ａ、Ｂ、Ｃ及びＤはスピニングビームＩＩＩにある分配板に位置し、ＰＥＴ融体をスピニングビームＩにより分配孔Bと分配孔Ｄへ輸送させ、ＣＤＰ融体をスピニングビームＩＩにより分配孔Aと分配孔Ｃへ輸送させ、スピニングビームI、II及びIIIの温度はそれぞれ２８０℃、２７５℃、２７８℃に制御し；
分配孔Ａ、分配孔Ｂ、分配孔Ｃ及び分配孔Ｄの入口において、ＰＥＴ融体とＣＤＰ融体との見かけ粘度差が4.7％であり；
すべての吐出孔は同心円によって位置し、さらに、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎであり；
ＦＤＹ工程に関する冷却温度が23℃、インターレースノズル圧力が0.３MPa、第１ローラ速度が2410m/min、第１ローラ温度が91℃、第２ローラ速度が4200m/min、第２ローラ温度が170℃、巻取速度が4120m/minである。
（２）そして、上記FＤYに120℃と20minとの緩和熱処理を与えて、
巻縮方向が不規則なＣＤＰ／ＰＥＴ複合繊維が混在して構成するものであって、巻縮収縮率が50％、巻縮安定度が83％、巻縮伸長率が91％、巻縮弾性回復率が90％、破断強度が3ｃN／Ｄｔｅｘ、破断伸長率が36％、総繊度が200Ｄｔｅｘである、
直延伸法によるＣＤＰ/ＰＥＴ二成分複合繊維を得る。 Example 8
A method for producing a CDP/PET bicomponent composite fiber by direct drawing is as follows.
(1) Distribute a CDP melt (with an intrinsic viscosity of 0.7 DL/g) and a PET melt (with an intrinsic viscosity of 0.56 DL/g) at a mass ratio of 50:50, and It is extruded through the "8" type discharge hole n to form FDY. Among them
The distribution is carried out by transporting the CDP melt through the distribution hole A and the PET melt through the distribution hole B to the discharge hole m, and at the same time transport the CDP melt through the distribution hole C and the PET melt through the distribution hole D to the discharge hole n. is to let;
The distribution holes A and B are equal height cylindrical holes with a diameter ratio of 1.4:1, and the distribution holes C and D are equal height cylindrical holes with a diameter ratio of 1:1.4; The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is connected to the distribution holes A and B. , the introduction hole F is connected with the distribution hole C and the distribution hole D, the distribution holes A, B, C and D are located in the distribution plate in the spinning beam III, and the PET melt is distributed by the spinning beam I with the distribution hole B transporting the CDP melt to the distribution hole A and the distribution hole C by the spinning beam II, the temperature of the spinning beams I, II and III being controlled at 280° C., 275° C. and 278° C. respectively;
At the inlets of distribution hole A, distribution hole B, distribution hole C and distribution hole D, the apparent viscosity difference between the PET melt and the CDP melt is 4.7%;
All the outlet holes are positioned by concentric circles, and the outlet holes on the same circle are either the outlet m or the outlet n;
The cooling temperature for the FDY process is 23°C, the interlaced nozzle pressure is 0.3 MPa, the first roller speed is 2410 m/min, the first roller temperature is 91°C, the second roller speed is 4200 m/min, and the second roller temperature is 170°C. , the winding speed is 4120m/min.
(2) Then, the FDY was subjected to a relaxation heat treatment at 120°C for 20 minutes,
Composed of a mixture of CDP/PET composite fibers with irregular crimp directions, crimp shrinkage rate is 50%, crimp stability is 83%, crimp elongation rate is 91%, crimp elasticity The recovery rate is 90%, the breaking strength is 3cN/Dtex, the breaking elongation is 36%, and the total fineness is 200Dtex.
A CDP/PET bicomponent composite fiber is obtained by direct drawing.

Claims (7)

ＦＤＹ工程に従って、カチオン可染ポリエステル（Cationic ＤyeＤ Polyester, ＣＤＰ）融体とポリエチレンテレフタレート（Polyethylene terephthalate, ＰＥＴ）融体とを分配し、同一の紡糸口金上の吐出孔ｍと吐出孔ｎから圧出して、延伸糸（Fully OrienteＤ Yarn、ＦＤＹ）を生成した後、緩和熱処理を行い、直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維を得る、直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法であって、
前記ＰＥＴ融体の固有粘度は0.55～0.60ＤＬ／ｇであり、前記ＣＤＰ融体の固有粘度は0.70～0.75ＤＬ／ｇであり、
前記分配とは、前記ＣＤＰ融体を分配孔Ａにより、及び前記ＰＥＴ融体を分配孔Ｂにより前記吐出孔ｍへ分配するとともに、前記ＣＤＰ融体を分配孔Ｃにより、及び前記ＰＥＴ融体を分配孔Ｄにより前記吐出孔ｎへ分配することであり、
前記分配孔Ａと前記分配孔Ｂは高さが等しい円柱孔であり、前記分配孔Ａと前記分配孔Ｂの直径比は1.30～1.50：1であり、前記分配孔Ｃと前記分配孔Ｄは高さが等しい円柱孔であり、前記分配孔Ｃと前記分配孔Ｄの直径比は1：1.30～1.50である、
直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 According to the FDY process, a cationic dyed polyester (CDP) melt and a polyethylene terephthalate (PET) melt are distributed and extruded through outlet holes m and n on the same spinneret. , After generating a drawn yarn (Fully Oriented Yarn, FDY), it is subjected to relaxation heat treatment to obtain a CDP/PET bicomponent parallel type conjugate fiber by a direct drawing method. A manufacturing method comprising:
The intrinsic viscosity of the PET melt is 0.55-0.60 DL/g, and the intrinsic viscosity of the CDP melt is 0.70-0.75 DL/g,
The distribution means that the CDP melt is distributed through the distribution hole A and the PET melt is distributed through the distribution hole B to the discharge hole m, and the CDP melt is distributed through the distribution hole C and the PET melt is distributed. Distributing to the discharge holes n by the distribution holes D ,
The distribution hole A and the distribution hole B are cylindrical holes having the same height, the diameter ratio of the distribution hole A and the distribution hole B is 1.30 to 1.50:1, and the distribution hole C and the distribution hole D are cylindrical holes with the same height, and the diameter ratio of the distribution holes C and the distribution holes D is 1:1.30 to 1.50.
A method for producing a CDP/PET bicomponent side-by-side composite fiber by direct drawing. 前記ＣＤＰ融体と前記ＰＥＴ融体との質量比は５０：５０である、
ことを特徴とする請求項１に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 mass ratio of the CDP melt and the PET melt is 50:50;
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 1, characterized in that: 前記吐出孔ｍまたは前記吐出孔ｎは、円形、楕円形、あるいは「８」形の吐出孔である、
ことを特徴とする請求項１に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 The outlet hole m or the outlet hole n is a circular, oval or "8" shaped outlet hole,
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 1, characterized in that: すべての吐出孔は同心円を成すように分布し、同一円上の吐出孔は、いずれも前記吐出孔ｍであるか、いずれも前記吐出孔ｎである、
ことを特徴とする請求項１に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 All the ejection holes are distributed so as to form concentric circles, and the ejection holes on the same circle are all the ejection holes m or all the ejection holes n.
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 1, characterized in that: 前記吐出孔ｍは、導入孔E、過渡孔及びキャピラリーの順に構成され、前記吐出孔ｎは、導入孔Ｆ、過渡孔及びキャピラリーの順に構成され、前記導入孔Eは前記分配孔Ａ及び前記分配孔Ｂと同時に接続し、前記導入孔Ｆは前記分配孔Ｃ及び前記分配孔Ｄと同時に接続し、前記分配孔Ａ、前記分配孔Ｂ、前記分配孔Ｃ及び前記分配孔ＤはスピニングビームＩＩＩ中の分配板に位置し、前記ＰＥＴ融体はスピニングビームＩにより前記分配孔Ｂと前記分配孔Ｄへ送られ、前記ＣＤＰ融体はスピニングビームＩＩにより前記分配孔Ａと前記分配孔Ｃへ送られる、
ことを特徴とする請求項１に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 The discharge hole m is composed of an introduction hole E, a transition hole and a capillary in this order, the discharge hole n is composed of an introduction hole F, a transition hole and a capillary in this order, and the introduction hole E is composed of the distribution hole A and the distribution hole A. The introduction hole F is connected simultaneously with the distribution hole C and the distribution hole D. The distribution hole A, the distribution hole B, the distribution hole C and the distribution hole D are connected simultaneously with the spinning beam III. said PET melt is sent to said distribution holes B and said distribution holes D by spinning beam I, said CDP melt is sent to said distribution holes A and said distribution holes C by spinning beam II ,
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 1, characterized in that: 前記スピニングビームＩの温度は280～285℃であり、前記スピニングビームＩＩの温度は275～280℃であり、前記スピニングビームＩＩＩの温度は278～282℃である、
ことを特徴とする請求項５に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 The temperature of the spinning beam I is 280-285°C, the temperature of the spinning beam II is 275-280°C, and the temperature of the spinning beam III is 278-282°C.
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 5, characterized in that: 前記ＦＤＹ工程に関するパラメータは、冷却温度が23～25℃、インターレースノズル圧力が0.20～0.30MPa、第１ローラ速度は2400～2500m/min、第１ローラ温度が90～95℃、第２ローラ速度が4000～4200m/min、第２ローラ温度が160～180℃、巻取速度が3930～4120m/minであり、前記緩和熱処理に関する処理温度が９０～１２０℃、処理時間が20～30minである、
ことを特徴とする請求項６に記載の直延伸法によるＣＤＰ/ＰＥＴ二成分並列型複合繊維の製造方法。 The parameters for the FDY process are: cooling temperature 23-25°C, interlace nozzle pressure 0.20-0.30MPa, first roller speed 2400-2500m/min, first roller temperature 90-95°C, second roller speed 4000 to 4200 m/min, the second roller temperature is 160 to 180°C, the winding speed is 3930 to 4120 m/min, the treatment temperature for the relaxation heat treatment is 90 to 120°C, and the treatment time is 20 to 30 minutes.
The method for producing a CDP/PET bicomponent side-by-side conjugate fiber by direct drawing according to claim 6.
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