JPH07216645A - Latent bulky hollow multifilament yarn - Google Patents

Abstract

PURPOSE:To obtain a hollow multifilament yarn suitable for knitted and woven fabric having excellent process passage in a high-order processing process, no collapse of the section of a filament, high bulkiness and high repulsion which have previously never existed, softness and volume, lightweight, excellent heat retaining properties and high qualities. CONSTITUTION:This latent bulky polyester hollow multifilament yarn is the one composed of a polyester, having a circular external shape of the section of a filament, a triangular hollow part at the central part of the filament and 10-50% hollow ratio of the hollow part. The hollow multifilament yarn has random thermal shrinkage percentages between the filaments in the section direction of the yarn and in the longer direction of each filament, a continuous thermal shrinkage stress value (FT value) in the longer direction of the yarn and a degree of variability (FTCV) of the FT value in specific ranges. The latent bulky polyester hollow multifilament yarn is effectively useful not only as a material for clothing but also as an industrial and a building materials, provides a luster feeling and a characteristic color development which a conventional material does not have and has a high value as a new material different from a conventional material.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は潜在嵩高性を有するポリ
エステルの中空マルチフィラメント糸に関する。さらに
詳しくは、衣料用素材として従来以上の高い嵩高性と反
発性を有し、かつ軽量で保温性に優れた高品位のポリエ
ステル織編物素材用に好適な中空マルチフィラメント糸
に関するものである。FIELD OF THE INVENTION The present invention relates to a hollow multifilament yarn of polyester having latent bulkiness. More specifically, the present invention relates to a hollow multifilament yarn suitable for a high-quality polyester woven or knit material having high bulkiness and resilience more than ever before as a material for clothing, lightweight and excellent in heat retention.

【０００２】[0002]

【従来の技術】ポリエステル繊維は、機械的性質、化学
的性質、イージーケア性、光沢性等優れた特性から一般
衣料用として広く利用されている。特に最近ではポリエ
ステル繊維の優れた特性を応用して他の繊維にない独特
な製品が開発されている。また、消費者の多様化および
個性化した感性のニーズがあり、より高品質、より軽量
化、より保温化などのいろいろな性能が求められてい
る。2. Description of the Related Art Polyester fibers are widely used for general clothing because of their excellent properties such as mechanical properties, chemical properties, easy care and gloss. In particular, recently, the excellent properties of polyester fibers have been applied to develop unique products that are not found in other fibers. In addition, there is a need for consumers to diversify and personalize their sensibilities, and various performances such as higher quality, lighter weight, and more heat retention are required.

【０００３】軽量化、保温化を達成するために糸条の嵩
高性を大きくしたり、織編物の組織を工夫することであ
る程度までは可能であるが、さらに軽量化を計るには繊
維自体を軽量化する必要がある。その手段の一つとして
見掛上軽量化された中空繊維が用いられている。中空繊
維については、古くから知られており、例えば特公昭４
２−２９２８号公報には、中空率５０％以下の中空繊維
の製法が開示されており、また特公昭５８−４０９２号
公報には織編物にした時極めて特徴のある触感および風
合が得られる糸条として、各フィラメントの長さ方向に
沿って未延伸部がランダムに分布した中空部を有するポ
リエステルマルチフィラメントの技術が開示されてい
る。It is possible to some extent by increasing the bulkiness of the yarn or by devising the structure of the woven or knitted material in order to achieve weight reduction and heat retention, but to further reduce the weight, the fiber itself should be used. It needs to be lightweight. Hollow fibers, which are apparently lightweight, are used as one of the means. Hollow fibers have long been known, for example, Japanese Patent Publication No.
JP-A-2-2928 discloses a method for producing hollow fibers having a hollow ratio of 50% or less, and JP-B-58-4092 discloses a woven or knitted fabric with an extremely characteristic touch and feel. As a yarn, there is disclosed a technique of a polyester multifilament having hollow portions in which undrawn portions are randomly distributed along the length direction of each filament.

【０００４】しかしながら、高い嵩高性と高い反発性を
有しソフトでボリュームがあり、かつ軽量で保温性に優
れたいわゆる高品位の織編物に適したポリエステルの中
空マルチフィラメント糸は得られていないのが実状であ
る。However, a hollow polyester multifilament yarn having high bulkiness, high resilience, softness, volume, light weight and excellent heat retention, which is suitable for a so-called high-quality woven or knitted fabric, has not been obtained. Is the actual situation.

【０００５】[0005]

【発明が解決しようとする課題】本発明の目的は、上記
したように従来以上の高い嵩高性と高い反発性を有しソ
フトでボリュームがあり、かつ軽量で保温性に優れたい
わゆる高品位の織編物に適したポリエステルの中空マル
チフィラメント糸を提供することにある。SUMMARY OF THE INVENTION As described above, the object of the present invention is to provide a so-called high-grade product which has higher bulkiness and higher resilience than ever before, is soft and voluminous, and is lightweight and excellent in heat retention. The object is to provide a hollow multifilament yarn of polyester suitable for a woven or knitted fabric.

【０００６】[0006]

【課題を解決するための手段】前記した本発明の目的
は、ポリエステルで形成され、フィラメントの断面の外
形が円形で、かつ、フィラメント断面の中心部に三角形
状の中空部を有し、中空部の中空率が１０〜５０％であ
る中空マルチフィラメント糸であって、該糸の断面方向
のフィラメント間および個々のフィラメントの長手方向
にランダムな熱収縮率を有し、かつ、糸長手方向の連続
熱収縮応力値（ＦＴ値）が下記式を満足し、ＦＴ値の
変動率（ＦＴＣＶ）が下記式を満足することを特徴と
する潜在嵩高性中空マルチフィラメント糸によって達成
できる。 式 （３０＋Ｄ）／２０≦ＦＴ値（ｇ）≦（３０＋
Ｄ）／１０ 但し、Ｄはマルチフィラメント糸の繊度（デニール）を
示す。 式 １．２≦ＦＴＣＶ（％）≦４．５The above-mentioned object of the present invention is made of polyester, and the filament has a circular cross-sectional outer shape, and has a triangular hollow portion at the center of the filament cross-section. A hollow multifilament yarn having a hollow ratio of 10 to 50%, having random heat shrinkage between filaments in the cross-sectional direction of the yarn and in the longitudinal direction of each filament, and being continuous in the longitudinal direction of the yarn. This can be achieved by a latent bulky hollow multifilament yarn characterized in that the heat shrinkage stress value (FT value) satisfies the following equation and the FT value fluctuation rate (FTCV) satisfies the following equation. Formula (30 + D) / 20 ≦ FT value (g) ≦ (30+
D) / 10 where D represents the fineness (denier) of the multifilament yarn. Formula 1.2 ≦ FTCV (%) ≦ 4.5

【０００７】以下本発明を詳細に説明する。本発明の潜
在嵩高性中空マルチフィラメント糸のフィラメントは、
中空フィラメントであり断面の外形が円形である必要が
ある。繊維の断面の外形が非円形であると紡糸時の糸切
れが発生しやすく、また延伸時にも糸切れや毛羽が発生
しやすい。なお円形とは真円であることが最もよいが、
必ずしも真円でなくともよく、ほぼ真円であればよく具
体的には円または楕円の直径で長い径と短い径の変化が
１０％以内の変動があるもの、または糸断面の重心から
最も離れた外周上の点までの距離Ｒ１と糸断面の重心に
最も近い外周上の点までの距離Ｒ２の関係が、本発明で
は［（Ｒ１−Ｒ２）／Ｒ１］×１００≦１０の関係を満
たしているものであればよい。The present invention will be described in detail below. The filament of the latent bulky hollow multifilament yarn of the present invention is
It must be a hollow filament and have a circular cross-section. If the cross-section of the fiber has a non-circular outer shape, yarn breakage during spinning is likely to occur, and yarn breakage or fluffing is likely to occur during drawing. It is best that a circle is a perfect circle,
It does not necessarily have to be a perfect circle, but may be an almost perfect circle. Specifically, the diameter of a circle or an ellipse has a variation of 10% or less between the long diameter and the short diameter, or the distance from the center of gravity of the yarn cross section. The relationship between the distance R1 to the point on the outer circumference and the distance R2 to the point closest to the center of gravity of the yarn cross section satisfies the relationship of [(R1-R2) / R1] × 100 ≦ 10 in the present invention. Anything that is present will do.

【０００８】さらに本発明の潜在嵩高性中空マルチフィ
ラメント糸は、フィラメント断面の中心部に三角形状の
中空部を有する必要がある。即ち中空部が偏心して存在
していないことを意味する。中空部があることは、その
分だけ軽量化され、織編物を軽量化できる。また、中空
部を三角形状の中空フィラメントにすることによって、
高い光沢性が得られる。特に艶消し剤やその他第３成分
が含有されていないポリエステルの場合に高い光沢性が
得られる。Further, the latent bulky hollow multifilament yarn of the present invention must have a triangular hollow portion at the center of the filament cross section. That is, it means that the hollow portion does not exist eccentrically. The presence of the hollow portion makes it possible to reduce the weight of the woven or knitted fabric by that amount. Also, by making the hollow part a triangular hollow filament,
High gloss can be obtained. In particular, high gloss can be obtained in the case of polyester containing no matting agent or other third component.

【０００９】高い光沢性が得られる要因は明確ではない
が中空フィラメントに光が当たった時中空部にまで入射
透光した光が三角形状の中空部の内壁で再度反射して光
沢を高めているものと思われる。さらに中空部がフィラ
メントの中心部にあること、中空部が三角形状であるこ
とによって、延伸時および高次加工工程での中空部の潰
れ即ち中空率の低下が少ない。一般的に中空糸の製造お
よびその高次加工工程において、中空フィラメントはロ
ーラ類との接糸圧やガイド類での摩擦力あるいはその他
の外力によって、フィラメントに横方向からの圧力が加
わりフィラメント断面が楕円形や偏平形に潰れ中空率が
低下する。この現象は中空率が高い中空フィラメントほ
ど起こり易い。しかも、ある中空率を越える場合にはフ
ィラメントの外形および中空部が円形の場合に起こり易
いようである。また、中空部がフィラメントの中心部に
なく偏心していると即ち部分的に肉薄部分があると起こ
り易い。本発明の潜在嵩高性中空マルチフィラメント糸
は前述したようにフィラメント断面の中心部に三角形状
の中空部を有するので潰れ難いものである。The reason why high glossiness is obtained is not clear, but when the hollow filament is exposed to light, the light transmitted to the hollow portion is reflected again on the inner wall of the triangular hollow portion to enhance the glossiness. It seems to be. Further, since the hollow portion is located at the center of the filament and the hollow portion has a triangular shape, the hollow portion is less likely to be crushed, that is, the hollow ratio is not lowered at the time of stretching and the higher-order processing step. Generally, in the production of hollow fibers and their higher-order processing steps, the hollow filaments have a cross-section with a lateral pressure being applied to the filaments by the yarn contact pressure with rollers, frictional force in guides, or other external force. It collapses into an elliptical shape or a flat shape and the hollow rate decreases. This phenomenon is more likely to occur in hollow filaments having a higher hollow ratio. Moreover, when the hollow ratio exceeds a certain value, it tends to occur when the outer shape of the filament and the hollow portion are circular. If the hollow portion is not located at the center of the filament and is eccentric, that is, if the hollow portion is partially present, it tends to occur. Since the latent bulky hollow multifilament yarn of the present invention has the triangular hollow portion in the central portion of the filament cross section as described above, it is difficult to be crushed.

【００１０】本発明の潜在嵩高性中空フィラメント糸の
中空部の三角形状について、図３を用いて説明する。三
角形状の三つの頂点をそれぞれａ、ｂ、ｃとし、３点を
直線で結んだ三角形の三つの辺をａｂ、ｂｃ、ｃａとす
る。点ｃから辺ａｂに垂線ｃｄを引き垂線ｃｄの延長上
での中空部壁との交点をｅとする。点ａおよび点ｂから
もそれぞれ辺ｂｃ、辺ｃａにも垂線を引き図の如く点
ｆ、点ｇ、点ｈ、点ｉを定める。本発明の中空繊維の中
空部は全容としては三角形状であり、好ましくは正三角
形であるが、図３のようにおむすび型であってもよく形
状は次の通りである。 （１）辺の線分ａｂ、ｂｃ、ｃａのそれぞれの長さは等
しいほどよいが、２０％以内の変化があってもよい。 （２）線分ａｇ／線分ａｆ、線分ｂｉ／線分ｂｈ、線分
ｃｅ／線分ｃｄのそれぞれの値は１．０〜１．３の範囲
にある。好ましくは１．０〜１．２の範囲にあることで
ある。The triangular shape of the hollow portion of the latent bulky hollow filament yarn of the present invention will be described with reference to FIG. Let three apexes of a triangular shape be a, b and c, respectively, and let three sides of a triangle connecting three points be straight lines be ab, bc and ca. A perpendicular line cd is drawn from the point c to the side ab, and an intersection point with the hollow wall on the extension of the perpendicular line cd is defined as e. A perpendicular line is drawn from the point a and the point b to the side bc and the side ca, respectively, and points f, g, h, and i are determined as shown in the drawing. The hollow portion of the hollow fiber of the present invention has a triangular shape as a whole, preferably an equilateral triangle, but may be a rice ball shape as shown in FIG. 3, and the shape is as follows. (1) The lengths of the line segments ab, bc, and ca on the sides are preferably equal, but may change within 20%. (2) The respective values of the line segment ag / line segment af, the line segment bi / line segment bh, and the line segment ce / line segment cd are in the range of 1.0 to 1.3. It is preferably in the range of 1.0 to 1.2.

【００１１】本発明の潜在嵩高性中空マルチフィラメン
ト糸のフィラメント断面における中空部の占める面積即
ち中空率は、１０〜５０％の範囲とする必要がある。中
空率が１０％未満では、衣料品としての軽量化の効果が
小さくまた保温性の効果も小さい。織編物の保温性は先
に述べた通りフィラメント間や組織間に空気を含ませる
構造にすればある程度までは高めることができるが、あ
まりにも空気を含ませる構造にすると体温で暖められた
空気が対流を起こし、保温性が低下する。中空糸では糸
自体に空気を封じ込めるので対流がなく保温性を高める
ことができる。中空率は高いほど軽量化の効果、保温性
の効果は大きく好ましいが、あまりにも高い中空率のフ
ィラメントでは高次加工工程でのフィラメント断面の潰
れが発生しやすく衣料品となった時に原糸の中空率を保
持できなくなるとともに、衣料品の着用中にもフィラメ
ント断面の潰れが発生しやすいので中空率は５０％以下
にする必要がある。軽量化の効果、保温性の効果および
着用中のフィラメント断面の潰れ易さなどから好ましい
中空率は、１５〜４０％である。The area occupied by the hollow portion in the filament cross section of the latent bulky hollow multifilament yarn of the present invention, that is, the hollow ratio, must be in the range of 10 to 50%. When the hollow ratio is less than 10%, the effect of reducing the weight of clothing is small and the effect of retaining heat is small. As mentioned above, the heat retention of the woven or knitted fabric can be increased to a certain extent by making the structure containing air between filaments or tissues, but if the structure is made to contain too much air, the air warmed by body temperature will be Convection occurs and heat retention decreases. Since the hollow fiber encloses air in the fiber itself, there is no convection and heat retention can be improved. The higher the hollowness, the greater the effect of weight reduction and the effect of heat retention, which is preferable.However, if the hollowness is too high, the filament cross-section is likely to be crushed in the higher-order processing step, and the filament of The hollow ratio cannot be maintained, and the filament cross section is likely to be crushed even when the clothing is worn. Therefore, the hollow ratio must be 50% or less. The hollow ratio is preferably 15 to 40% in view of the effect of reducing the weight, the effect of retaining heat, and the crushability of the filament cross section during wearing.

【００１２】本発明の潜在嵩高性中空マルチフィラメン
ト糸の中空率は、上述のように１５〜４０％が好ましい
が個々のフィラメントの中空率は、ほぼ一定であること
が好ましく平均値に対して個々のフィラメントの中空率
の差が４％以下であることが好ましく３％以下にあるこ
とが更に好ましい。個々のフィラメントの中空率の差が
４％を超えるようになると織編物にした際に「スジ」状
の欠点となって見え易いので良くない。The hollowness of the latent bulky hollow multifilament yarn of the present invention is preferably 15 to 40% as described above, but the hollowness of each filament is preferably substantially constant, and the hollowness of each filament is different from the average value. The difference in hollow ratio between the filaments is preferably 4% or less, more preferably 3% or less. When the difference in hollow ratio between individual filaments exceeds 4%, it is not preferable because it becomes a "streak" -like defect when formed into a woven or knitted product, which is easily visible.

【００１３】さらに本発明の潜在嵩高性中空マルチフィ
ラメント糸のフィラメント断面における中空部でない部
分の肉厚で最も薄い部分の肉厚が次の式を満足する肉厚
であることが好ましい。 肉厚（ミクロン）≧２．４×（フィラメントの繊度（デ
ニール））^1/2 例えば、３デニールのフィラメントでは、４．２ミクロ
ン以上あることが好ましい。中空部でない部分の肉厚
は、中空フィラメントの繊度、中空率および中空部の形
状によって決まるが、いずれにしても肉厚が前記の式を
満足することによってフィラメント断面の潰れを防ぐた
めに好ましい。Further, it is preferable that the thinnest portion of the latent bulky hollow multifilament yarn of the present invention in the filament cross section has the thinnest portion satisfying the following formula. Wall thickness (micron) ≧ 2.4 × (fineness of filament (denier)) ^1/2 For example, in the case of 3 denier filament, it is preferable that the thickness is 4.2 microns or more. The wall thickness of the non-hollow portion is determined by the fineness, the hollow ratio and the shape of the hollow portion of the hollow filament, and in any case, it is preferable that the wall thickness satisfies the above expression to prevent the collapse of the filament cross section.

【００１４】本発明の潜在嵩高性中空マルチフィラメン
ト糸は該糸の断面方向のフィラメント間および個々のフ
ィラメントの長手方向にランダムに熱収縮率を有し、か
つ、糸長手方向の連続熱収縮応力値（ＦＴ値）が式
（３０＋Ｄ）／２０≦ＦＴ値（ｇ）≦（３０＋Ｄ）／１
０（但し、Ｄはマルチフィラメント糸の繊度（デニー
ル）を示す）および式 １．２≦ＦＴＣＶ（％）≦
４．５を満足することが必要である。該糸の断面方向の
フィラメントは１％〜１０％の範囲内でランダムに熱収
縮率を有することが好ましく、また、個々のフィラメン
トの長手方向に１％〜１０％の範囲内でランダムに熱収
縮率を有することが好ましい。The latent bulky hollow multifilament yarn of the present invention has a heat shrinkage ratio randomly between filaments in the cross-sectional direction of the yarn and in the longitudinal direction of each filament, and has a continuous heat shrinkage stress value in the yarn longitudinal direction. (FT value) is the formula
(30 + D) / 20 ≦ FT value (g) ≦ (30 + D) / 1
0 (however, D represents the fineness (denier) of the multifilament yarn) and the formula 1.2 ≦ FTCV (%) ≦
It is necessary to satisfy 4.5. It is preferable that the filaments in the cross-sectional direction of the yarn have a heat shrinkage rate at random within the range of 1% to 10%, and the heat shrinkage at random within the range of 1% to 10% in the longitudinal direction of each filament. It is preferable to have a rate.

【００１５】潜在嵩高性中空マルチフィラメント糸の断
面方向のフィラメントおよび個々のフィラメントの長手
方向にランダムに熱収縮率を有していることによって、
織編物の染色仕上げ工程における熱処理時に個々のフィ
ラメントが糸の断面方向および長手方向にランダムに異
なった収縮挙動をすることにより、織編物の嵩高性を高
めると同時に反発性を高め、さらに軽量感、ソフト感、
暖かさ、ドレープ性、色の深みなどを高めるものと思わ
れる。By having the filaments in the cross-sectional direction of the latent bulky hollow multifilament yarn and the random heat shrinkage in the longitudinal direction of the individual filaments,
At the time of heat treatment in the dyeing and finishing process of the woven or knitted fabric, the individual filaments randomly exhibit different shrinkage behaviors in the cross-sectional direction and the longitudinal direction of the yarn, thereby increasing the bulkiness of the woven or knitted fabric and at the same time the resilience, and a lighter feeling, Soft feeling,
It seems to enhance warmth, drape, and color depth.

【００１６】本発明の潜在嵩高性中空マルチフィラメン
ト糸で規定する糸長手方向の連続熱収縮応力値（ＦＴ
値）及びＦＴ値の変動率（ＦＴＣＶ）の測定方法の詳細
は後述するが、この測定は自動化された測定装置で測定
するので人による個人差がなく精度の高い測定ができる
とともにその測定も糸長手方向の微小な距離に対して連
続的に測定するので糸本来の特性を正確に把握でき製造
管理が安定してできる。したがって、糸の品質安定性も
良好となり、得られる織編物も品位が安定した良好なも
のができる。Continuous heat shrinkage stress value (FT) in the longitudinal direction of the yarn defined by the latent bulky hollow multifilament yarn of the present invention.
Value) and the rate of change of FT value (FTCV) will be described in detail later, but since this measurement is performed by an automated measuring device, there is no individual difference among people and highly accurate measurement is possible, and the measurement is also performed with a thread. Since continuous measurement is performed for a minute distance in the longitudinal direction, the original characteristics of the yarn can be accurately grasped, and stable manufacturing control can be performed. Therefore, the quality stability of the yarn is also good, and the obtained woven or knitted product can be good with stable quality.

【００１７】本発明の潜在嵩高性中空マルチフィラメン
ト糸の糸長手方向の連続熱収縮応力値（ＦＴ値）および
ＦＴ値の変動率（ＦＴＣＶ）を規定することは、織編物
の染色仕上げ工程における熱処理時に熱収縮率だけでな
く、その力や変動率がある範囲にあることが織編物の嵩
高性や反発性などを調整し、かつ織編物の外観を良好に
するために必要である。糸長手方向の連続熱収縮応力値
（ＦＴ値）は、（３０＋Ｄ）／２０≦ＦＴ値（ｇ）≦
（３０＋Ｄ）／１０を満足せねばならないが、ＦＴ値が
（３０＋Ｄ）／１０を超えると嵩高発現性は非常に高く
なるが、いわゆる「ふかつき」現象が発生し、織編物の
風合を損なうと同時に反発性が著しく低下するので良く
ない。また、織編物に異常な凹凸が発生したり、スジ状
の欠点が現れるので良くない。一方、ＦＴ値が（３０＋
Ｄ）／２０未満の場合には、嵩高発現性がほとんどな
く、したがって織編物の嵩高性が小さく、軽量感、ソフ
ト感、暖かさ、ドレープ性、色の深みなども小さくな
る。The continuous heat shrinkage stress value (FT value) in the longitudinal direction of the latent bulky hollow multifilament yarn of the present invention and the variation rate (FTCV) of the FT value are defined by the heat treatment in the dyeing and finishing step of the woven or knitted fabric. In some cases, not only the heat shrinkage rate but also the force and the variation rate thereof are required to be within a certain range in order to adjust the bulkiness and the resilience of the woven / knitted fabric and to improve the appearance of the woven / knitted fabric. The continuous thermal shrinkage stress value (FT value) in the yarn longitudinal direction is (30 + D) / 20 ≦ FT value (g) ≦
Although (30 + D) / 10 must be satisfied, if the FT value exceeds (30 + D) / 10, the bulkiness is very high, but the so-called "fukkatsuki" phenomenon occurs and the texture of the woven or knitted fabric is impaired. At the same time, the resilience is significantly reduced, which is not good. In addition, abnormal unevenness is generated in the woven or knitted fabric, and streaky defects appear, which is not good. On the other hand, if the FT value is (30+
When it is less than D) / 20, the bulkiness is hardly exhibited, and therefore the bulkiness of the woven or knitted fabric is small, and the feeling of lightness, softness, warmth, drapability, depth of color and the like are also small.

【００１８】また、糸長手方向の連続熱収縮応力値（Ｆ
Ｔ値）の変動率（ＦＴＣＶ）は、１．２≦ＦＴＣＶ
（％）≦４．５を満足せねばならないが、ＦＴＣＶが
４．５％を超えると織編物にした場合に、いわゆる「ヒ
ケ」現象が発生し、織編物に大きなスジ状の欠点が現れ
るので良くない。また、ＦＴＣＶが１．２％未満では、
織編物の嵩高性が小さく、軽量感、ソフト感、暖かさ、
ドレープ性、色の深みなども小さくなるので良くない。The continuous heat shrinkage stress value (F
The fluctuation rate (FTCV) of the T value is 1.2 ≦ FTCV
(%) ≦ 4.5 must be satisfied, but if the FTCV exceeds 4.5%, a so-called “sink” phenomenon occurs in the case of making a woven or knitted product, and large streak-like defects appear in the woven or knitted product. Not good. Moreover, when FTCV is less than 1.2%,
The bulkiness of the woven and knitted fabric is small, and the feeling of lightness, softness, warmth,
Drapability and color depth are also small, which is not good.

【００１９】本発明の潜在嵩高性中空マルチフィラメン
ト糸は、原糸段階での毛羽即ち紡糸、延伸加工して巻取
られた糸の毛羽の有無が高次加工性の良否に大きく関係
し、その影響は従来のポリエステル糸に比較して大き
い。従って、巻取られた糸の毛羽の数が、０．２０個／
１万ｍ以下であることが好ましく、０．１０個／１万ｍ
以下であることがより好ましく、０．０５個／１万ｍ以
下であることが一層好ましい。In the latent bulky hollow multifilament yarn of the present invention, the presence or absence of fluff at the stage of the raw yarn, that is, the fluff of the yarn wound by the spinning process, is greatly related to the quality of the higher-order processability. The effect is greater than that of conventional polyester yarn. Therefore, the number of fluffs of the wound thread is 0.20 /
It is preferably 10,000 m or less, and 0.10 pieces / 10,000 m
It is more preferable that the number is not more than 0.05, and it is still more preferable that the number is not more than 0.05 / 10,000 m.

【００２０】本発明の潜在嵩高性中空マルチフィラメン
ト糸は、ポリエステルポリマを例えば図２で示す三スリ
ット型のポリマ吐出孔を有する口金から溶融紡糸し、平
滑性が高い油剤を付与し未延伸糸を得、これを一旦巻き
取った後、例えば図６で示す延伸・熱処理装置で延伸加
工することにより得られる。この際、溶融紡糸の糸条の
強制冷却は紡糸口金面下３〜１５ｃｍの距離で冷却風の
吹き付けを開始することが中空率のバラツキを小さくす
るので好ましい。The latent bulky hollow multifilament yarn of the present invention is obtained by melt-spinning a polyester polymer from a spinneret having a three-slit type polymer discharge hole shown in FIG. 2, and applying an oil agent having high smoothness to form an undrawn yarn. It is obtained by once winding it and then stretching it with a stretching / heat treatment apparatus shown in FIG. 6, for example. At this time, in the forced cooling of the melt-spun yarn, it is preferable to start blowing the cooling air at a distance of 3 to 15 cm below the surface of the spinneret in order to reduce the variation in hollow ratio.

【００２１】延伸・熱処理装置での延伸加工について、
図６を用いて説明する。図６は本発明の潜在嵩高性中空
マルチフィラメント糸の製造方法の延伸加工の一実施態
様を示す概要図である。Regarding the stretching process in the stretching / heat treatment apparatus,
This will be described with reference to FIG. FIG. 6 is a schematic view showing one embodiment of the drawing process of the method for producing a latent bulky hollow multifilament yarn of the present invention.

【００２２】前述説明で得られた未延伸糸ドラム１から
リングガイド２を介して未延伸糸を引き出し、張力調整
装置３に導き張力調整して供給ローラ４に導き、供給ロ
ーラ４よりも僅かに大きい周速度で回転する加熱ローラ
５との間で張力を掛け張力調整し、未延伸糸の張力を一
定となし加熱ローラ５に供給し加熱ローラ５で充分に加
熱しながら延伸ローラ６との間で所定の延伸倍率で延伸
した後、糸条を開繊振動装置７（図７に示す）で開繊と
同時に振動を与えながら弛緩状態で加熱プレ−ト８に導
き開繊振動による不均一接触走行させた後に交絡装置９
（図８に示す）で交絡を施し、延伸ローラ６よりも低速
度の弛緩引き出しローラ１０に導き、引き続いてボビン
１１に巻き取る。このような延伸・熱処理方法で製造す
ることによって、得られる糸の断面方向のフィラメント
はランダムに熱収縮率を有し、個々のフィラメントの長
手方向にもランダムな熱収縮率を有し、かつ、糸長手方
向の熱収縮応力値（ＦＴ値）が本発明で規定する値でＦ
Ｔ値の変動率（ＦＴＣＶ）が本発明で規定する値の潜在
嵩高性中空マルチフィラメント糸が得られる。得られた
繊維の断面は図１に示されるものとほとんど同等であ
る。From the undrawn yarn drum 1 obtained as described above, the undrawn yarn is drawn out via the ring guide 2, guided to the tension adjusting device 3 and adjusted in tension to be fed to the supply roller 4, which is slightly smaller than the supply roller 4. The tension is adjusted by applying tension to the heating roller 5 which rotates at a high peripheral speed, and the tension of the undrawn yarn is kept constant and is supplied to the heating roller 5 so that the heating roller 5 sufficiently heats the drawn roller 6. After being drawn at a predetermined draw ratio with, the yarn is guided to the heating plate 8 in a relaxed state while being vibrated at the same time as being opened by the opening vibration device 7 (shown in FIG. 7), and uneven contact due to opening vibration is performed. Entangling device 9 after running
It is entangled by (as shown in FIG. 8), guided to the loosening and drawing roller 10 at a speed lower than that of the drawing roller 6, and then wound on the bobbin 11. By producing by such a drawing / heat treatment method, the filaments in the cross-sectional direction of the obtained yarn have a random heat shrinkage rate, and also have a random heat shrinkage rate in the longitudinal direction of each filament, and The heat shrinkage stress value (FT value) in the longitudinal direction of the yarn is F defined by the present invention.
A latent bulky hollow multifilament yarn having a T value variation rate (FTCV) defined by the present invention is obtained. The cross section of the resulting fiber is almost equivalent to that shown in FIG.

【００２３】本発明の潜在嵩高性中空マルチフィラメン
ト糸は、交絡装置によって交絡を施すことにより織編物
製造工程における工程通過性を良好にすると同時に織編
物にした場合に反発性が向上するという効果がある。反
発性向上は本発明の糸のように嵩高性の高い糸におい
て、いくつかの交絡点があることによりその効果が発揮
できていると思われる。交絡度合（ＣＦ値）はマルチフ
ィラメント糸の繊度やフィラメント数によって適宜設定
すればよいが概ね１０〜５０（ＣＦ値）の範囲が好まし
い。The latent bulky hollow multifilament yarn of the present invention has the effect of improving the processability in the woven or knitted material manufacturing process by entangling with a entanglement device and, at the same time, improving the resilience of the woven or knitted material. is there. It is considered that the effect of improving the resilience can be exerted by the yarn having high bulkiness such as the yarn of the present invention, because there are some entanglement points. The degree of entanglement (CF value) may be appropriately set depending on the fineness of the multifilament yarn and the number of filaments, but a range of about 10 to 50 (CF value) is preferable.

【００２４】本発明に用いるポリエステルポリマの製造
方法は特に限定されないが、テレフタル酸（ＴＰＡ）と
エチレングリコール（ＥＧ）から直接重合法によりポリ
マを製造する方法が好ましい。これは直接重合法では一
般にエステル化触媒を必要としないために、ポリマ中に
生成する粒子を減少せしめることができポリマの透明感
が増すことができるからである。また、ポリエステルの
溶液ヘイズが３０％以下であることが得られる中空マル
チフィラメント糸あるいは織物または編物の光沢を向上
するために好ましい。The method for producing the polyester polymer used in the present invention is not particularly limited, but a method for producing a polymer from terephthalic acid (TPA) and ethylene glycol (EG) by a direct polymerization method is preferable. This is because the direct polymerization method generally does not require an esterification catalyst, so that the particles formed in the polymer can be reduced and the transparency of the polymer can be increased. Further, the solution haze of the polyester is preferably 30% or less in order to improve the gloss of the hollow multifilament yarn or the woven or knitted fabric.

【００２５】本発明の潜在嵩高性中空マルチフィラメン
ト糸は、原糸製造段階で通常の延伸方式で延伸した中空
糸に比較すれば既に嵩高性が高い糸となっているが、本
発明の糸あるいは織物または編物を熱処理すると、糸の
断面方向の各フィラメント熱収縮差および各フィラメン
トの長手方向の熱収縮差によって、嵩高発現をし嵩高性
の高い糸あるいは織物または編物を得ることができ、さ
らに反発性が高く、軽量感、ソフト感、暖かさ、ドレー
プ性、色の深みなどがあり、スジ状欠点のない物ができ
る。また、例えば織物にする場合に縦糸、横糸の両方に
使用すれば非常に良好な効果を発揮することができる
が、縦糸のみあるいは横糸のみに使用しても十分にその
効果を発揮することができる。特に縦糸のみあるいは横
糸のみに使用する場合には縦糸に使用した場合に反発性
向上効果が大きく顕著である。The latent bulky hollow multifilament yarn of the present invention is already a bulky yarn as compared with the hollow fiber drawn by the usual drawing method at the stage of producing the raw yarn, but the yarn of the present invention or When a woven or knitted fabric is heat-treated, a yarn or a woven or knitted fabric having a high bulkiness and high bulkiness can be obtained due to the difference in the thermal shrinkage of each filament in the cross-sectional direction of the yarn and the difference in the thermal shrinkage in the longitudinal direction of each filament. It is highly resistant to lightness, softness, warmth, drape, depth of color, and has no streaky defects. Further, for example, when it is used as a woven fabric, when it is used for both warp and weft, a very good effect can be exhibited, but even when it is used only for warp or only weft, the effect can be sufficiently exhibited. . In particular, when it is used only for warp threads or only for weft threads, the effect of improving resilience is significant when used for warp threads.

【００２６】[0026]

【実施例】以下実施例により本発明をさらに詳細に説明
する。なお実施例中の物性は次の様にして測定した。The present invention will be described in more detail with reference to the following examples. The physical properties in the examples were measured as follows.

【００２７】Ａ．中空率 繊維の断面写真から次式により算出した。 中空率（％）＝（中空部の断面積／繊維の断面積）×１
００A. Hollow ratio Calculated by the following formula from a cross-sectional photograph of the fiber. Hollow ratio (%) = (Cross-sectional area of hollow part / Cross-sectional area of fiber) × 1
00

【００２８】Ｂ．糸の断面方向のフィラメントの熱収縮
率 マルチフィラメント糸の任意の一部分を切取り、分解針
で丁寧に分解し、得られたフィラメント１本に０．１ｇ
／ｄの荷重下で５ｃｍの長さに印しを付ける。このフィ
ラメントを沸騰水中自由状態で５分間処理した後、フィ
ラメントに０．１ｇ／ｄの荷重を掛けマイクロメーター
で印しの間の長さを読取り、フィラメントの収縮率を求
める。この操作をマルチフィラメント糸のフィラメント
数の５０％以上の本数のフィラメントについて測定す
る。B. Heat shrinkage rate of filament in cross-sectional direction of thread Multifilament thread is cut off at an arbitrary part and carefully decomposed with a decomposition needle. 0.1 g per filament obtained
Mark a length of 5 cm under a load of / d. After the filament is treated in boiling water for 5 minutes, a load of 0.1 g / d is applied to the filament and the length between the marks is read with a micrometer to read the shrinkage rate of the filament. This operation is measured for 50 or more filaments of the multifilament yarn.

【００２９】Ｃ．個々のフィラメントの長手方向の熱収
縮率 マルチフィラメント糸を分解針で丁寧に分解し、得られ
たフィラメント１本に０．１ｇ／ｄの荷重下で２ｃｍ間
隔に印しを連続的に付ける。このフィラメントを沸騰水
中自由状態で５分間処理した後、フィラメントに０．１
ｇ／ｄの荷重を掛けマイクロメーターで印しの間の長さ
を読取り、フィラメントの２ｃｍ間隔の連続的な収縮率
を求める。この操作を１０本のフィラメントについて測
定する。C. Heat shrinkage rate of individual filaments in the longitudinal direction The multifilament yarn is carefully decomposed with a decomposition needle, and one filament obtained is continuously marked at intervals of 2 cm under a load of 0.1 g / d. After treating this filament for 5 minutes in free state in boiling water,
The length between the marks is read by applying a load of g / d with a micrometer, and the continuous shrinkage rate of the filament at 2 cm intervals is obtained. This operation is measured on 10 filaments.

【００３０】Ｄ．糸長手方向の熱収縮率差 マルチフィラメント糸に０．１ｇ／ｄの荷重下で５０ｃ
ｍの長さに印しを付ける。このマルチフィラメント糸を
沸騰水中自由状態で５分間処理し風乾した後、マルチフ
ィラメント糸に０．１ｇ／ｄの荷重を掛け印しの間の長
さを読取り、収縮率を求める。この操作を１０本のマル
チフィラメント糸について測定する。D. Heat shrinkage difference in longitudinal direction of multifilament yarn 50c under 0.1g / d load
Mark the length of m. The multifilament yarn is treated in boiling water in a free state for 5 minutes and air-dried, then a load of 0.1 g / d is applied to the multifilament yarn and the length between them is read to determine the shrinkage ratio. This operation is measured on 10 multifilament yarns.

【００３１】Ｅ．光沢度 スガ試験機製自動測色色差計を用いて照射４５度、受光
４４度の条件で酸化マグネシウム標準光沢板を用いて基
準値を調整した後、アルミ板に巻いたサンプルに対し繊
維軸方向に照射、受光をし光沢度を測定した。E. Glossiness After adjusting the reference value using a standard glossy plate of magnesium oxide under the conditions of 45 degrees of irradiation and 44 degrees of light reception using an automatic colorimetric color difference meter manufactured by Suga Test Instruments, the sample was wound on an aluminum plate in the fiber axis direction. The glossiness was measured by irradiation and light reception.

【００３２】Ｆ．毛羽 東レエンジニアリング社のマルチフライカウンターＦ型
を用いて延伸糸５れた総数から毛羽数を求めた。 毛羽数（個／１万ｍ）＝（カウント総数／２５万ｍ）×
１００００F. Fluff The number of fluffs was calculated from the total number of 5 drawn yarns using a multi-fly counter type F of Toray Engineering. Number of fluff (pieces / 10,000 m) = (total count / 250,000 m) ×
10,000

【００３３】Ｇ．表面摩擦係数 走行糸摩擦係数測定装置を用いて、直径３５ｍｍの梨地
表面のピン（表面粗度；６５（ＨＲＭＳ））に接触角θ
＝１８０度で糸を接触させ、糸速５５ｍ／分でサンプル
を走行させ、ピン入り張力Ｔ１の平均値を１０ｇとした
条件の下でピン出張力を１．５分間測定しその最大値Ｔ
２を求め下式で算出する。 μｄ＝（３／π）ｌｎ（Ｔ２／Ｔ１）G. Surface friction coefficient Using a running yarn friction coefficient measuring device, a contact angle θ was applied to a pin (surface roughness; 65 (HRMS)) on the matte surface with a diameter of 35 mm.
= 180 degrees, the yarn is brought into contact with the sample, the sample is run at a yarn speed of 55 m / min, and the pin pull-out tension is measured for 1.5 minutes under the condition that the average value of the pin-entry tension T1 is 10 g.
2 is calculated and calculated by the following formula. μd = (3 / π) ln (T2 / T1)

【００３４】Ｈ．溶液ヘイズ 十分に洗浄して油剤を落した試料１ｇをフェノール：四
塩化炭素＝３：２の混合液１０ｍｌに温度１００℃で溶
解し、スガ試験機製直読ヘイズメーターで１０ｍｍセル
を用いて測定した。H. Solution haze 1 g of a sample, which had been thoroughly washed to remove the oil, was dissolved in 10 ml of a mixed solution of phenol: carbon tetrachloride = 3: 2 at a temperature of 100 ° C., and measured using a 10 mm cell with a direct-reading haze meter manufactured by Suga Test Instruments.

【００３５】Ｉ．糸条の嵩高度 糸条を周長１ｍのかせ繰機で８０回巻きのかせとして数
本採取し、２００℃の乾熱中で５分間無荷重で熱処理を
行い嵩高発現させ、嵩高発現させた数本のかせを４８０
００デニールになるようにまとめ、まとめた試料の中央
部が幅２．５ｃｍになる枠にセットし、２．５ｃｍ四方
の５０ｇの荷重を掛けて荷重下の試料の見掛け体積Ｖを
求め、一方荷重を掛けた部分の試料の重量Ｇを求め、次
式により嵩高度を算出する。 嵩高度＝Ｖ／Ｇ（ｃｃ／ｇ）I. Bulkiness of yarns A number of yarns are collected in a skein with a circumference of 1 m as 80 skeins and heat treated in dry heat at 200 ° C for 5 minutes with no load to make them bulky. Skein of book 480
The sample was put together in a frame having a width of 2.5 cm, and the apparent volume V of the sample under load was calculated by applying a load of 50 g on a 2.5 cm square. The weight G of the sample multiplied by is calculated, and the bulk altitude is calculated by the following formula. Bulk altitude = V / G (cc / g)

【００３６】Ｊ．ＣＦ値（交絡係数） スイス国 ＲＯＴＨＳＣＨＩＬＤ社製のＥｎｔａｎｇｌ
ｅｍｅｎｔ Ｔｅｓｔｅｒを用いて、開繊長（ｍ）を３
０回測定し、その平均値をＨとした時、次式でＣＦ値を
算出する。 ＣＦ値＝１ｍ／ＨJ. CF value (entanglement factor) Entangl manufactured by ROTSCHILD in Switzerland
Opening length (m) of 3 using element Tester
When the measurement is performed 0 times and the average value is H, the CF value is calculated by the following formula. CF value = 1 m / H

【００３７】Ｋ．糸長手方向の連続熱収縮応力値（ＦＴ
値）およびＦＴ値の変動率（ＦＴＣＶ） 測定装置は、
東レエンジニアリング社製「熱収縮むら測定装置」（Ｆ
ＴＡ−５００）を用いる。測定方法は糸供給ローラと糸
引き出しローラの間にある１００℃湿熱処理部で糸を連
続的に湿熱処理し、糸の熱収縮による応力(g) を湿熱処
理部の入り口手前にある張力測定器で連続的に測定す
る。測定頻度は糸長１ｃｍ当たり６回測定し、その平均
値を１データとして１０００個のデータを採取する。得
られた１０００個のデータの平均値を「連続熱収縮応力
値（ＦＴ値）」とし、１０００個のデータの変動率を
「ＦＴ値の変動率（ＦＴＣＶ）」とする。本装置ではこ
の計算をコンピューターで実施している。なお、糸走行
速度は１０ｍ／分で糸供給ローラと糸引き出しローラの
周速度は同速度であり、１００℃湿熱処理時間は１秒、
測定試料長さは１０ｍである。K. Continuous heat shrinkage stress value in the longitudinal direction of the yarn (FT
Value) and the rate of change of FT value (FTCV) measuring device,
Toray Engineering Co., Ltd. "heat shrinkage unevenness measuring device" (F
TA-500) is used. The measuring method is to continuously wet and heat the yarn in the 100 ° C wet heat treatment section between the yarn supply roller and the yarn drawing roller, and measure the stress (g) due to the heat shrinkage of the yarn in the tension measuring device in front of the entrance of the wet heat treatment section. Measure continuously with. The measurement frequency is 6 times per 1 cm of yarn length, and 1000 pieces of data are collected with the average value as 1 data. The average value of the obtained 1000 pieces of data is defined as "continuous heat shrinkage stress value (FT value)", and the variation rate of the 1000 pieces of data is defined as "variation rate of FT value (FTCV)". In this device, this calculation is performed by a computer. The yarn traveling speed was 10 m / min, the peripheral speeds of the yarn supplying roller and the yarn drawing roller were the same, and the 100 ° C. wet heat treatment time was 1 second.
The measurement sample length is 10 m.

【００３８】実施例１ 直接重合法で重合したポリエステルポリマ（二酸化チタ
ン量が０．０２５％含有）を用い、紡糸温度２８８℃で
図２に示す吐出孔を２４個有する口金から延伸加工後の
繊度が７５デニールになる吐出量で吐出した後に、口金
面下８ｃｍの位置で毎分２５ｍの速度の冷却風を当てて
冷却し、脂肪酸エステルを主成分とする平滑性の高い油
剤をを油分付着量が１．１％になるようにコントロール
しながら付与した後に１５００ｍ／分で巻き取った。Example 1 Using a polyester polymer polymerized by a direct polymerization method (containing titanium dioxide in an amount of 0.025%), at a spinning temperature of 288 ° C., a fineness after drawing from a die having 24 discharge holes shown in FIG. Is discharged at a rate of 75 denier, then is cooled by applying cooling air at a speed of 25 m / min at a position 8 cm below the die surface, and a highly smooth oil agent containing a fatty acid ester as a main component is attached to the oil amount. Was controlled and controlled so as to be 1.1%, and then wound up at 1500 m / min.

【００３９】得られた未延伸糸を図６に例示した延伸加
工装置を用いて、潜在嵩高性ポリエステル中空マルチフ
ィラメント糸を製造した。未延伸糸ドラム１から未延伸
糸を引き出し、テンセー３で張力調整し、供給ローラ４
に供給し、供給ローラ４と加熱ローラ５の間でストレッ
チを掛け８８℃の加熱ローラ５に６回巻き付けて充分に
加熱し、延伸ローラ６との間で所定の延伸倍率で延伸
し、図７に示す開繊振動装置７で空気圧０．８５Ｋｇ／
ｃｍ² の空気を噴射して開繊と同時に糸条に振動を付与
しながら弛緩状態で接糸長が２５ｃｍで温度が２２０℃
の加熱プレ−ト８に供給した後、図８に示す交絡装置９
でＣＦ値（交絡係数）が約１２になる空気（空気圧；
１．８Ｋｇ／ｃｍ² ）を供給し交絡を付与し、延伸ロー
ラ６の周速度よりも７％低速度の弛緩引き出しローラ１
０に導いた後ボビン１１に巻き上げた（実験Ｎｏ．
１）。得られた糸条の断面方向のフィラメントの熱収縮
率を測定した結果、１％〜８％の範囲でランダムであっ
た。（全フィラメント数を測定した） 得られた糸条の
個々のフィラメントの長手方向の熱収縮率を測定した結
果、１％〜９％の範囲でランダムであった。（測定本数
は１０本）。得られた糸条の糸長手方向の連続熱収縮応
力値（ＦＴ値）は７．５（ｇ）、ＦＴ値の変動率（ＦＴ
ＣＶ）は２．５％であった。A latent bulky polyester hollow multifilament yarn was produced from the obtained undrawn yarn by using the drawing apparatus illustrated in FIG. The undrawn yarn is pulled out from the undrawn yarn drum 1, the tension is adjusted by the tensioner 3, and the supply roller 4 is used.
7 and is stretched between the supply roller 4 and the heating roller 5 and wound 6 times around the heating roller 5 at 88 ° C. to be sufficiently heated, and stretched with the stretching roller 6 at a predetermined stretching ratio. Air pressure 0.85 Kg /
While spraying air of cm ² and applying vibration to the yarn at the same time as opening, the yarn length is 25 cm and the temperature is 220 ° C in a relaxed state.
After being supplied to the heating plate 8 of FIG.
At which the CF value (entanglement coefficient) becomes about 12 (air pressure;
1.8 Kg / cm ² ) to provide entanglement, and a relaxation pull-out roller 1 at a speed 7% lower than the peripheral speed of the stretching roller 6.
After leading to 0, the bobbin 11 was wound up (Experiment No.
1). As a result of measuring the heat shrinkage rate of the filament in the cross-sectional direction of the obtained yarn, it was random in the range of 1% to 8%. (Measurement of the total number of filaments) As a result of measuring the heat shrinkage ratio in the longitudinal direction of each filament of the obtained yarn, it was random in the range of 1% to 9%. (10 pieces can be measured). The continuous heat shrinkage stress value (FT value) in the longitudinal direction of the obtained yarn was 7.5 (g), and the variation rate of FT value (FT
CV) was 2.5%.

【００４０】また、比較のため実験Ｎｏ．１と同様条件
で次の条件を変更して糸条を得た。 （１）延伸ローラ６の周速度よりも３％低速度の弛緩引
き出しローラ１０とし、開繊振動装置７での空気圧を
３．５Ｋｇ／ｃｍ² として糸条の糸長手方向の連続熱収
縮応力値（ＦＴ値）、ＦＴ値の変動率（ＦＴＣＶ）を大
きくした（実験Ｎｏ．２）。（２）延伸ローラ６の周速
度よりも１６％低速度の弛緩引き出しローラ１０とし、
開繊振動装置７での空気圧を０．５Ｋｇ／ｃｍ² として
糸条の糸長手方向の連続熱収縮応力値（ＦＴ値）を小さ
くし、ＦＴ値の変動率（ＦＴＣＶ）を大きくした（実験
Ｎｏ．３）。（３）開繊振動装置７で空気を噴射せず、
開繊も振動も付与しないで熱処理を行った。（実験Ｎ
ｏ．４）この糸条は、断面方向のフィラメント間および
個々のフィラメントの長手方向にランダムな熱収縮率を
ほとんど有していなかった。さらに実験Ｎｏ．１の未延
伸糸を通常の延伸機で延伸したものを実験Ｎｏ．５とし
て比較評価した。この糸条も断面方向のフィラメント間
および個々のフィラメントの長手方向にランダムな熱収
縮率をほとんど有していなかった。For comparison, Experiment No. A yarn was obtained by changing the following conditions under the same conditions as in 1. (1) The continuous drawing heat shrinkage stress value of the yarn in the longitudinal direction of the yarn is set with the loosening / drawing roller 10 having a speed 3% lower than the peripheral velocity of the drawing roller 6 and the air pressure in the opening vibration device 7 to 3.5 Kg / cm ^2. The (FT value) and the variation rate (FTCV) of the FT value were increased (Experiment No. 2). (2) A loose pull-out roller 10 having a speed 16% lower than the peripheral speed of the stretching roller 6,
The air pressure in the fiber-spreading vibration device 7 was set to 0.5 Kg / cm ² to reduce the continuous thermal shrinkage stress value (FT value) in the yarn longitudinal direction of the yarn and increase the FT value fluctuation rate (FTCV) (Experiment No. .3). (3) Do not inject air with the opening vibration device 7,
The heat treatment was performed without opening or vibration. (Experiment N
o. 4) This yarn had almost no random heat shrinkage between filaments in the cross-sectional direction and in the longitudinal direction of individual filaments. Further, the experiment No. Experiment No. 1 was obtained by stretching the unstretched yarn of No. 1 with an ordinary stretching machine. Comparative evaluation was made as 5. This yarn also had little random heat shrinkage between filaments in the cross-sectional direction and in the longitudinal direction of individual filaments.

【００４１】得られた糸条のフィラメントの断面は図１
と同様で中空部が三角形状で繊維の中心部にあり中空率
は２０．７％であり、中空部でない部分の肉厚は最も薄
い部分で４．３ミクロンであった。得られた糸条の毛羽
数は０．０８個／万ｍ以下であり表面摩擦係数は０．２
５〜０．２８の範囲であった。ＣＦ値（交絡係数）は１
０〜１６の範囲であった。The cross section of the filament of the obtained yarn is shown in FIG.
Similarly to the above, the hollow portion was triangular and in the center of the fiber, the hollow ratio was 20.7%, and the thinnest portion had a wall thickness of 4.3 microns. The number of fluffs of the obtained yarn is 0.08 / 10,000 m or less, and the surface friction coefficient is 0.2.
It was in the range of 5 to 0.28. CF value (confounding coefficient) is 1
It was in the range of 0 to 16.

【００４２】得られた糸条の糸特性および平織物に織成
し通常の精練、乾熱セット、染色仕上げ加工した織物の
評価結果を表１に示す。Table 1 shows the yarn characteristics of the obtained yarns and the evaluation results of a woven fabric which is woven into a plain woven fabric and subjected to usual scouring, dry heat setting and dyeing and finishing.

【００４３】[0043]

【表１】 実験Ｎｏ．１（本発明）の糸条は嵩高度が大きく良好
で、その織物は反発性が良好で軽量感、ソフト感、暖か
さ、ドレープ性および色の深みがあり非常に良いもので
あった。[Table 1] Experiment No. The yarn of No. 1 (invention) had a large bulkiness and was good, and the woven fabric had good resilience and had a light weight feeling, a soft feeling, warmth, drapeability and color depth, and was very good.

【００４４】実験Ｎｏ．２〜５はいずれも比較例である
が、Ｎｏ．２の糸条はＦＴ値、ＦＴＣＶともに大きく
く、嵩高度は大きいが織物はふかつきがあり良くなかっ
た。またスジ状欠点もあった。Ｎｏ．３の糸条はＦＴ値
が小さくＦＴＣＶが大きく、嵩高度が小さく、織物に
は、小さなスジ状が多量に発生し品位が非常に悪い物で
あった。Ｎｏ．４およびＮｏ．５の糸条はＦＴ値は大き
いが、嵩高度が小さく、織物にはソフト感、暖かさ、ド
レープ性および色の深みもなく反発性も小さかった。Experiment No. Nos. 2 to 5 are comparative examples, but No. The yarn of No. 2 had a large FT value and FTCV, and had a high bulk height, but the woven fabric was not good because it had a dry cloth. There was also a stripe defect. No. The yarn of No. 3 had a small FT value, a large FTCV, a small bulkiness, and a large amount of small streaks were generated in the woven fabric, and the quality was very poor. No. 4 and No. The yarn of No. 5 had a large FT value, but had a low bulkiness, and the woven fabric had a soft feeling, warmth, drapability, and no depth of color and small rebound.

【００４５】実施例２ 図２の口金吐出孔でリング状に配設されたスリットの内
径を変更した口金を使用した以外は実施例１の実験Ｎ
ｏ．１に準じ、中空率を変更した糸条を得た。得られた
糸条の毛羽数は０．１０個／万ｍ以下であり、表面摩擦
係数は０．２４〜０．２８の範囲であった。また、中空
部でない部分の肉厚で最も薄い部分の肉厚は、３．４〜
６．５ミクロンの範囲であり実験Ｎｏ．１１が最も薄い
ものであった。得られた糸条を実施例１に準じて評価し
た。ＦＴ値は６ｇ〜９ｇの範囲であり、ＦＴＣＶは２％
〜４％の範囲にあった。その他の評価結果を表２に示し
た。Example 2 Experiment N of Example 1 except that a die in which the inner diameter of the slit arranged in a ring shape in the die discharge hole of FIG. 2 was changed was used.
o. According to 1, a yarn having a changed hollowness was obtained. The number of fluffs of the obtained yarn was 0.10 / 10,000 m or less, and the surface friction coefficient was in the range of 0.24 to 0.28. The thickness of the thinnest part of the non-hollow part is 3.4 to
It is in the range of 6.5 microns, and the experimental No. Eleven was the thinnest. The obtained yarn was evaluated according to Example 1. FT value is in the range of 6g-9g, FTCV is 2%
Was in the range of ~ 4%. The other evaluation results are shown in Table 2.

【表２】 実験Ｎｏ．６（比較例）は中空率が小さく軽量性の効果
が小さい。実験Ｎｏ．１０（比較例）は、織物から染色
仕上げ工程時でのフィラメントの潰れが多発して織物で
の中空率は小さくなっていた。[Table 2] Experiment No. 6 (comparative example) has a small hollow ratio and a small effect of lightness. Experiment No. In No. 10 (Comparative Example), the woven fabric was crushed frequently during the dyeing and finishing process, and the hollow ratio of the woven fabric was small.

【００４６】軽量性や後加工での繊維断面の形状保持の
面で本発明の実験Ｎｏ．７、８、９の糸条が有効に活用
できる。Experiment No. 1 of the present invention is advantageous in terms of lightness and shape retention of the fiber cross section in the post-processing. The yarns 7, 8 and 9 can be effectively used.

【００４７】実施例３ 実施例１のポリマを用い、図５ａ、図５ｂの口金吐出孔
を有する口金を用いた以外は実施例１の実験Ｎｏ．１に
準じ、フィラメントの断面を変更した糸条を得、評価し
た。得られた糸条のフィラメントの断面は図４ａ、図４
ｂに示した。実験結果を実験Ｎｏ．１と比較し表３に示
した。Example 3 The experiment No. 1 of Example 1 was repeated except that the polymer of Example 1 was used and the die having the die discharge holes of FIGS. 5a and 5b was used. According to 1, a filament having a modified filament cross section was obtained and evaluated. The cross section of the filament of the obtained yarn is shown in FIGS.
shown in b. The experimental results are shown in Experiment No. The results are shown in Table 3 in comparison with 1.

【００４８】図４ａに示した外形が三葉型の中空繊維糸
条（実験Ｎｏ．１１（比較例）、中空率１５．２％）
は、紡糸時の糸切れが１５回／トンと多く、また延伸加
工時の毛羽発生も３．４コ／１万ｍと多く、糸切れ率も
１２％と多かった。A hollow fiber yarn having a trilobal outer shape as shown in Fig. 4a (Experiment No. 11 (comparative example), hollow ratio 15.2%)
The number of yarn breakages during spinning was 15 times per ton, the number of fluffs during drawing was 3.4 cores / 10,000 m, and the yarn breakage ratio was 12%.

【００４９】図４ｂに示した中空部が偏心したフィラメ
ントの糸条は、（実験Ｎｏ．１２（比較例）中空率が２
０．５％であったが織物にした時に断面の変化が大きく
繊維の潰れが発生し中空率が１３．２％にまで低下し
た。The filament yarn having an eccentric hollow portion shown in FIG. 4B (Experiment No. 12 (comparative example) has a hollow ratio of 2).
Although it was 0.5%, the change in the cross section was large when the woven fabric was formed, and the fibers were crushed, and the hollow ratio was lowered to 13.2%.

【００５０】[0050]

【表３】 実施例４ 実施例１のポリマを用い、図２、図５ｃの口金吐出孔を
有する口金を用い、中空率を約３５％に調整した以外は
実施例１の実験Ｎｏ．１に準じ、フィラメントの中空部
形状を比較した糸条を得、評価した。得られた糸条のフ
ィラメントの断面は図１、図４ｃに示したと同等のもの
である。実験結果を表４に示した。[Table 3] Example 4 Experiment No. 1 of Example 1 was repeated except that the polymer of Example 1 was used, the die having the die discharge holes of FIGS. 2 and 5c was used, and the hollow ratio was adjusted to about 35%. In accordance with No. 1, the filaments in which the shapes of the hollow portions of the filaments were compared were obtained and evaluated. The cross section of the filaments of the resulting yarn is equivalent to that shown in Figures 1 and 4c. The experimental results are shown in Table 4.

【００５１】図４ｃに示した中空部形状がほぼ真円の中
空繊維糸条は（実験Ｎｏ．１４（比較例））、中空率が
３６．１％であったが織物にした時に断面の変化が大き
くフィラメントの潰れが発生し中空率が２６．２％にま
で低下した。また、織物においてフィラメントの潰れた
部分はスジ状のムラが発生し織物の品位が著しく不良で
あった。The hollow fiber yarn in which the shape of the hollow portion is almost perfect as shown in FIG. 4c (Experiment No. 14 (Comparative Example)) had a hollow ratio of 36.1%, but the change in cross section when formed into a woven fabric. Was large and the filament was crushed, and the hollow ratio was reduced to 26.2%. In addition, streak-like unevenness was generated in the crushed part of the filament in the woven fabric, and the quality of the woven fabric was extremely poor.

【００５２】図１に示した中空部形状がほぼ三角形のフ
ィラメントの糸条は（実験Ｎｏ．１３（本発明）、中空
率が３５．２％であったが織物にしてもフィラメントの
潰れがほとんどなく中空率も３３．４％であり、織物の
品位も良好であった。The filament yarn shown in FIG. 1 whose hollow portion has a substantially triangular shape (Experiment No. 13 (invention) had a hollow ratio of 35.2%, but even if it is a woven fabric, the collapse of the filament is almost eliminated. The hollow ratio was 33.4% and the quality of the woven fabric was good.

【００５３】[0053]

【表４】 [Table 4]

【００５４】[0054]

【発明の効果】上述したようにフィラメント断面の外形
が円形で、正三角形状の特異な中空部を有する中空フィ
ラメント糸条で、該糸の断面方向のフィラメント間およ
び個々のフィラメントの長手方向にランダムな熱収縮率
を有し、かつ、糸長手方向の連続熱収縮応力値およびそ
の変動率を特定の範囲に規定することにより、高次加工
工程での工程通過性が良好でフィラメント断面の潰れも
なく、従来にはない高い嵩高性と高い反発性を有し、ソ
フトでボリュームがあり、かつ軽量で保温性に優れた高
品位の編織物に適したポリエステルの中空マルチフィラ
メント糸が提供できる。As described above, a hollow filament yarn having a circular hollow cross section and a unique hollow portion having an equilateral triangle shape, which is random between filaments in the cross-sectional direction of the yarn and in the longitudinal direction of each filament. Has a high heat shrinkage, and by defining the continuous heat shrinkage stress value in the yarn longitudinal direction and its variation rate within a specific range, the process passability in the higher-order processing process is good and the filament cross section is not crushed. In addition, it is possible to provide a hollow polyester multi-filament yarn, which has high bulkiness and high resilience, which are not heretofore available, is soft and has a volume, is lightweight, and is excellent in heat retention and suitable for high-quality knitted fabrics.

【００５５】本発明における潜在嵩高性中空マルチフィ
ラメント糸は、衣料用素材はもとより産資建装素材とし
ても有効に活用できる。衣料用素材のなかでは特に高級
織物素材、高級編物素材に適応すると従来にはない優れ
た風合を有しその効果が著しい。また、糸長手方向の連
続熱収縮応力値およびその変動率を自動化された測定装
置で測定することにより、糸条の製造管理が安定し、糸
条の品質安定性およびそれに伴い得られる織編物の品位
も安定したものができる。さらに本発明における潜在嵩
高性中空マルチフィラメント糸は反発性、軽量・保温性
ばかりでなく、従来素材にない光沢感や独特な発色性が
得られ、従来素材とは差別化される新規素材として高い
価値があるものである。The potentially bulky hollow multifilament yarn according to the present invention can be effectively used not only as a material for clothing but also as a material for construction of industrial materials. Among the materials for clothing, particularly when applied to high-class woven materials and high-class knit materials, they have an unprecedented excellent texture and their effects are remarkable. Further, by measuring the continuous heat shrinkage stress value in the yarn longitudinal direction and its variation rate with an automated measuring device, the manufacturing control of the yarn is stabilized, the quality stability of the yarn and the resulting woven or knitted product The quality can be stable. Further, the latent bulky hollow multifilament yarn according to the present invention is not only repulsive, lightweight and heat-retaining, but also has a glossy feeling and a unique color developability that are not available in conventional materials, and is highly useful as a new material that is differentiated from conventional materials. It is worth it.

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

【図１】本発明のポリエステル中空繊維の一例を示す横
断面図。FIG. 1 is a cross-sectional view showing an example of a polyester hollow fiber of the present invention.

【図２】図１のポリエステル中空繊維を製造する際の口
金吐出孔を示す平面図。FIG. 2 is a plan view showing a die discharge hole when manufacturing the polyester hollow fiber of FIG.

【図３】図１のポリエステル中空繊維のモデル図。FIG. 3 is a model view of the polyester hollow fiber in FIG.

【図４】本発明における比較例のポリエステル中空繊維
の横断面図。FIG. 4 is a cross-sectional view of a polyester hollow fiber of a comparative example in the present invention.

【図５】図４のポリエステル中空繊維を製造する際の口
金吐出孔を示す平面図。FIG. 5 is a plan view showing a die discharge hole at the time of producing the polyester hollow fiber of FIG.

【図６】本発明の潜在嵩高性中空マルチフィラメント糸
を製造する際の延伸加工の一実施態様を示す概要図。FIG. 6 is a schematic view showing one embodiment of a drawing process when producing the latent bulky hollow multifilament yarn of the present invention.

【図７】開繊振動装置の一例を示す概略図。FIG. 7 is a schematic view showing an example of a fiber-spreading vibration device.

【図８】交絡装置の一例を示す概略図。FIG. 8 is a schematic view showing an example of a confounding device.

【符号の説明】[Explanation of symbols]

１：未延伸糸ドラム ２：リングガイド ３：テンサー ４：供給ローラ ５：加熱ローラ ６：延伸ローラ ７：開繊振動装置 ８：加熱プレート ９：交絡装置 １０：弛緩引き出しローラ １１：巻取パーン １２：延伸糸条 １３：ガイド １４：開繊振動装置の圧空供給口 １５：交絡装置の圧空供給口 1: Unstretched yarn drum 2: Ring guide 3: Tensor 4: Supply roller 5: Heating roller 6: Stretching roller 7: Spreading vibration device 8: Heating plate 9: Entangling device 10: Relaxing / drawing roller 11: Winding panic 12 : Drawing yarn 13: Guide 14: Compressed air supply port of opening vibration device 15: Compressed air supply port of interlacing device

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】ポリエステルで形成され、フィラメントの
断面の外形が円形で、かつ、フィラメント断面の中心部
に三角形状の中空部を有し、中空部の中空率が１０〜５
０％である中空マルチフィラメント糸であって、該糸の
断面方向のフィラメント間および個々のフィラメントの
長手方向にランダムな熱収縮率を有し、かつ、糸長手方
向の連続熱収縮応力値（ＦＴ値）が下記式を満足し、
ＦＴ値の変動率（ＦＴＣＶ）が下記式を満足すること
を特徴とする潜在嵩高性中空マルチフィラメント糸。 式 （３０＋Ｄ）／２０≦ＦＴ値（ｇ）≦（３０＋
Ｄ）／１０ 但し、Ｄはマルチフィラメント糸の繊度（デニール）を
示す。 式 １．２≦ＦＴＣＶ（％）≦４．５1. A filament made of polyester, the filament having a circular cross section, a triangular hollow portion at the center of the filament cross section, and the hollow portion having a hollowness of 10 to 5.
A hollow multifilament yarn of 0%, which has a random heat shrinkage ratio between filaments in the cross-sectional direction of the yarn and in the longitudinal direction of each filament, and has a continuous heat shrinkage stress value (FT) in the yarn longitudinal direction. Value) satisfies the following formula,
A latent bulky hollow multifilament yarn characterized by having a FT value variation rate (FTCV) satisfying the following formula. Formula (30 + D) / 20 ≦ FT value (g) ≦ (30+
D) / 10 where D represents the fineness (denier) of the multifilament yarn. Formula 1.2 ≦ FTCV (%) ≦ 4.5