JP6446962B2 - Polyester false twisted yarn package - Google Patents
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本発明はポリエステル仮撚加工糸のチーズ状パッケージに関する。さらに詳しくは巻締まり、型崩れ、最内層と表層での染色性、糸物性差が生じることなく、かつ編織時の解舒性が良好なポリエステル仮撚加工糸のチーズ状パッケージに関する。 The present invention relates to a cheese-like package of polyester false twisted yarn. More particularly, the present invention relates to a cheese-like package of polyester false twisted yarn that does not cause winding tightness, loses its shape, does not cause dyeability between the innermost layer and the surface layer, and does not cause a difference in yarn physical properties, and has good unraveling properties during knitting.
ポリエステル繊維は、機械的性質等の様々な優れた特性から各種分野に広く利用されている。特に水着、スポーツ衣料用途では、高伸縮性、疎水性といった機能が要求されており、一般的に疎水性が良好なポリエステル繊維の中でも伸縮性、捲縮性、および柔らかな風合いが良好な編織物を供給できるポリブチレンテレフタレートが高伸縮性ポリエステル仮撚加工糸として好適に使用されている。 Polyester fibers are widely used in various fields because of various excellent properties such as mechanical properties. Especially for swimsuits and sports apparel, functions such as high stretchability and hydrophobicity are required. Generally, among polyester fibers with good hydrophobicity, knitted fabrics with good stretchability, crimpability, and soft texture. Polybutylene terephthalate capable of supplying is suitably used as a highly stretchable polyester false twisted yarn.
また昨今では、編織工程において、高生産性、高速度化技術が確立、一般化されており、中には１０００ｍ／分以上の解舒速度で使用されるケースも少なくない。高速度化が進むと、一般的には解舒時に糸切れが増加するが、仮撚加工糸のチーズ状パッケージの場合は、その傾向が顕著であり、解舒性の善し悪しが生産効率、布帛品位に与える影響は大きい。 In recent years, high productivity and high speed technology have been established and generalized in the knitting process, and there are many cases where they are used at an unwinding speed of 1000 m / min or more. As the speed increases, yarn breakage generally increases at the time of unwinding, but in the case of a cheese-like package of false twisted yarn, the tendency is remarkable, and whether the unwinding property is good or bad is the production efficiency, the fabric The impact on quality is significant.
このような背景から、仮撚加工糸のチーズ状パッケージの解舒性改善を目的とした提案がなされている（特許文献１〜３）。しかしながら、これらの提案はいずれも加工糸の巻取パッケージを形成する際の、パッケージ直前の走行糸条の張力を高張力として巻取る方法を採用しており、高伸縮性を有する繊維の場合、糸条の伸縮により巻締まりが発生して、巻取紙管の潰れ、パッケージ最内層と表層の染色性、糸物性に差が生じてしまう課題がある。またパッケージフォームや、パッケージ形成時の糸条トラバース角度、耳崩し方法を検討した提案も種々なされているが、これらいずれについても、一般的なポリエステル加工糸のチーズ状パッケージでの解舒性は改善される傾向にあるものの、高伸縮繊維の場合は、同様の課題が残る（特許文献４〜６）。 From such a background, proposals aimed at improving the unwinding property of the cheese-like package of false twisted yarn have been made (Patent Documents 1 to 3). However, both of these proposals employ a method of winding the tension of the traveling yarn immediately before the package as a high tension when forming the wound package of the processed yarn, and in the case of a fiber having high stretchability, There is a problem that tightening of the yarn occurs due to the expansion and contraction of the yarn, and the winding paper tube is crushed, and the dyeing property and the yarn physical property of the innermost package layer and the surface layer are different. Various proposals have also been made on the package foam, the yarn traverse angle during package formation, and the method of twisting the ears. All of these have improved the unwinding properties of general polyester processed yarns in cheese-like packages. However, similar problems remain in the case of highly stretchable fibers (Patent Documents 4 to 6).
本発明は仮撚加工糸のチーズ状パッケージに関する。さらに詳しくは巻締まりや型崩れ、最内層と表層間での染色性、物性差がなく、編織時の解舒性が良好なポリエステル仮撚加工糸のチーズ状パッケージを提供することにある。 The present invention relates to a cheese-like package of false twisted yarn. More specifically, an object of the present invention is to provide a cheese-like package of polyester false-twisted yarn that has no unwinding or deformation, no dyeing property between the innermost layer and the surface layer, and no difference in physical properties, and has good unraveling properties during weaving.
上記課題を解決するため、ポリエステル仮撚加工糸のチーズ状パッケージについて、表層硬度、および端面硬度を鋭意検討した。
その結果、本発明の課題はポリエステル仮撚加工糸のチーズ状パッケージにおいて、表層の硬度が７５°未満であって、最内層と最外層を４等分した３カ所で測定した各端面硬度において隣り合う硬度の増加率が内層側の硬度に対して２〜１０％であることを特徴とするポリエステル仮撚加工糸パッケージとすることで解決に至ったものである。
In order to solve the above-mentioned problems, the surface hardness and the end face hardness of the cheese-like package of polyester false twisted yarn were studied earnestly.
As a result, the problem of the present invention is that in the cheese-like package of polyester false twisted yarn, the surface layer hardness is less than 75 °, and the end surface hardness measured at three locations obtained by dividing the innermost layer and the outermost layer into four equal parts. The solution is achieved by using a polyester false twisted yarn package characterized in that the increase rate of the matching hardness is 2 to 10% with respect to the hardness of the inner layer side.
本発明のポリエステル仮撚加工糸チーズ状パッケージの好ましい形態によれば、前記パッケージにおける内層部のテーパー角は０±５°、外層部のテーパー角は２４±１０°と漸次増加させることである。
本発明のポリエステル仮撚加工糸チーズ状パッケージの好ましい形態によれば、前記パッケージを構成する糸条の捲縮復元率は４０％以上である。
According to a preferred form of the polyester false twisted yarn cheese-shaped package of the present invention, the package taper angle of the inner portion of di is 0 ± 5 °, the taper angle of the outer layer is to be gradually increased and 24 ± 10 ° .
According to the preferable form of the polyester false twisted yarn cheese-like package of the present invention, the crimp recovery rate of the yarn constituting the package is 40% or more.
本発明によれば、巻締まり、型崩れ、最内層と表層での染色性、糸物性差がなく、編織時の解舒性が良好なポリエステル仮撚加工糸のチーズ状パッケージを得ることができる。また本発明のポリエステル仮撚加工糸パッケージを用いることにより、編織品の製造に際して、整経、分割、サイジング等、準備工程を含めて加工時の糸切れがなく、生産効率に優れ、品位良好な布帛品を得ることができる。 According to the present invention, it is possible to obtain a cheese-like package of polyester false-twisted yarn that is free from winding, loses its shape, has no difference in dyeability and yarn properties between the innermost layer and the surface layer, and has good unraveling properties during knitting. . In addition, by using the polyester false twisted yarn package of the present invention, there is no yarn breakage during processing including preparatory steps such as warping, splitting, sizing, etc. in the production of a woven fabric, and it is excellent in production efficiency and quality. A fabric product can be obtained.
次に、本発明のポリエステル仮撚加工糸パッケージについて、詳細に説明する。
本発明における硬度は、ゴム硬度計（アスカー（高分子計器）Ｃ型、ＳＲＩＳ（日本ゴム協会規格）０１０１）の測定部をパッケージ側面に押し当て、その指針が指示する値をいう。
本発明のポリエステル仮撚加工糸パッケージの表層硬度は７５°未満である。表層硬度を７５°未満にすることで、糸条の巻締まりがなく、パッケージ最内層と表層部における糸条の拘束具合に余裕があり、パッケージ全体にわたって糸条長手方向の張力負荷がないため、最内層と表層部にて染色性、糸物性が同等の糸条を得ることができる。好ましくは７３°未満、より好ましくは７０°未満である。７５°以上の場合は、巻締まりによる最内層、表層での糸条長手方向の張力負荷が異なり、その結果として染色性と糸物性に差が生じてしまう。さらは、紙管変形や最内層の糸条の捲縮が消滅するといった問題も生じる。表層硬度の下限値について、特に規制はないが、チーズ状パッケージ形成が可能であれば、極力小さい値でパッケージを形成した方がよい。図１は、本発明のポリエステル仮撚加工糸のチーズ状パッケージの表層硬度の測定方法を例示説明するための模式図である。パッケージの表層とは、巻取り軸に並行したパッケージ円筒状の表面部分を意味する。パッケージ表層の巻取り軸方向の長さ、すなわちパッケージ形成時の糸条トラバース幅を巻幅とし、表層巻幅を４等分した３個の円周上の線分を４等分した各点の硬度を測定し、求めた平均値を表層硬度とする。ちなみに円周上の測定箇所４点は、巻取り軸中心に対して各９０°間隔とした任意の４点である。
Next, the polyester false twisted yarn package of the present invention will be described in detail.
The hardness in the present invention refers to a value indicated by the guide of a rubber hardness meter (Asker (polymer meter) C type, SRIS (Japan Rubber Association Standard) 0101) pressed against the side of the package.
The surface hardness of the polyester false twisted yarn package of the present invention is less than 75 °. By making the surface hardness less than 75 °, there is no tightness of the yarn, there is a margin in the constraint condition of the yarn in the innermost layer of the package and the surface layer, and there is no tension load in the longitudinal direction of the yarn over the entire package, Yarns having the same dyeability and yarn properties can be obtained in the innermost layer and the surface layer portion. The angle is preferably less than 73 °, more preferably less than 70 °. In the case of 75 ° or more, the tension load in the longitudinal direction of the yarn in the innermost layer and the surface layer due to winding tightening is different, resulting in a difference in dyeability and yarn physical properties. Furthermore, there is a problem that the paper tube is deformed and the innermost layer of crimps disappear. Although there is no restriction | limiting in particular about the lower limit of surface layer hardness, if cheese-like package formation is possible, it is better to form a package with the smallest possible value. FIG. 1 is a schematic diagram for illustrating the method for measuring the surface hardness of a cheese-like package of polyester false twisted yarn of the present invention. The surface layer of the package means a package cylindrical surface portion parallel to the winding shaft. The length of the package surface layer in the winding axis direction, that is, the yarn traverse width at the time of forming the package is defined as the winding width, and the line segments on the three circumferences obtained by dividing the surface layer winding width into four equal parts The hardness is measured, and the obtained average value is defined as the surface layer hardness. By the way, the four measurement points on the circumference are arbitrary four points at intervals of 90 ° with respect to the center of the winding shaft.
本発明のポリエステル仮撚加工糸パッケージの端面硬度の測定方法を図２により説明する。本発明のパッケージは、最内層と最外層を４等分した３カ所の円周上で測定した各端面硬度（１）（２）（３）が、各端面硬度間で増加率２〜１０％の範囲で漸増している。この範囲で漸増させることにより、製品出荷や編織工程でのハンドリングの際に、輪抜け、型崩れの問題を解消できる。また適度にパッケージの形態維持を持続できるため、綾落ちによる解舒糸切れを生じることがなく、生産性を良好に維持できる。好ましくは３〜９％の範囲である。漸増の割合が２％を下回る場合、パッケージの輪抜け、型崩れが発生することがある。１０％を超える場合は、内層側の糸密度に対して、外層側の糸密度が極端に増加することとなり、巻締まりが発生し、内層部の綾落ちによる解舒糸切れを発生させてしまうことがある。図２は、本発明のポリエステル仮撚加工糸のチーズ状パッケージの端面硬度を例示説明するための模式図である。パッケージの端面とは、巻取り軸に対して法線方向に積層された巻取られた糸条部分を意味する。パッケージの端面の巻厚の高さを４等分した３個の円周上を等分した各円周上の４点の硬度を測定した平均値をそれぞれ端面硬度（１）、（２）、（３）とする。ここで、円周上の４点は、巻取り軸中心に９０°間隔とした任意の４点である。端面硬度の増加率は、内層側の端面硬度（１）、外層側の端面硬度（３）、その中間を端面硬度（２）として、（端面硬度（ｎ＋１）−端面硬度ｎ）／端面硬度ｎ×１００を算出した値をいう。 A method for measuring the end face hardness of the polyester false twisted yarn package of the present invention will be described with reference to FIG. In the package of the present invention, each end face hardness (1), (2), (3) measured on three circumferences obtained by dividing the innermost layer and the outermost layer into four equal parts has an increase rate of 2 to 10% between the end face hardnesses. It gradually increases in the range of. By gradually increasing the amount within this range, it is possible to solve the problems of loop loss and loss of shape at the time of product shipment and handling in the knitting process. In addition, since the package shape can be maintained appropriately, the unraveling yarn breakage due to twilling does not occur, and the productivity can be maintained satisfactorily. Preferably it is 3 to 9% of range. If the rate of gradual increase is less than 2%, the package may lose its shape or lose its shape. If it exceeds 10%, the yarn density on the outer layer side will increase extremely with respect to the yarn density on the inner layer side, winding will occur, and unraveling yarn breakage will occur due to traversing of the inner layer portion. Sometimes. FIG. 2 is a schematic diagram for illustrating the end surface hardness of the cheese-like package of the polyester false twisted yarn of the present invention. The end face of the package means a wound yarn portion laminated in a normal direction with respect to the winding shaft. The average values obtained by measuring the hardness of four points on each circumference obtained by equally dividing three circumferences obtained by equally dividing the height of the thickness of the package end face into four, respectively, are given as end face hardness (1), (2), (3). Here, the four points on the circumference are arbitrary four points at intervals of 90 ° about the winding shaft center. The increase rate of the end face hardness is (end face hardness (n + 1) −end face hardness n) / end face hardness n, where the end face hardness (1) on the inner layer side, the end face hardness (3) on the outer layer side, and the middle of the end face hardness (2). A value obtained by calculating x100.
本発明のポリエステル仮撚加工糸のパッケージは、パッケージにおける内層部のテーパー角が０±５°、外層部のテーパー角が２４±１０°となるよう内層部より外層部が大きくなる形状であることが好ましい。この範囲ようにポリエステル仮撚加工糸パッケージの形態を形成することにより、パッケージ端面の綾落ちがなく、かつ形成されたパッケージ表面は巻取り軸方向に凹凸がないため解舒時の糸条の擦れ、転がりによる絡みが発生せず、解舒性良好なパッケージとすることができる。図３（Ａ）（Ｂ）は、本発明のポリエステル仮撚加工糸のチーズ状パッケージのテーパー角を例示説明するための模式図である。テーパー角は、パッケージの巻取軸に対して垂直な法線方向と、その直線をパッケージ側に傾斜させた際にパッケージ端面と接触する直線とがなす角である。そして巻厚の高さを４等分した最内層より巻厚が１／４となる円周を内層部、最内層より巻厚が３／４の円周となる円周を外層部として、２個の円周の各々に対して測定したテーパー角を、内層部のテーパー角、および外層部のテーパー角と定義する。内層部のテーパー角、および外層部のテーパー角は、各々に対して４点を測定した平均値とする。ここで、円周上の４点は、巻取り軸中心に９０°間隔とした任意の４点である。図３（Ａ）は、本発明のポリエステル仮撚加工糸パッケージにおける内層部のテーパー角を例示するための模式図である。巻取軸に対して垂直な直線と、その直線をパッケージ側に傾斜させ、内層部と接する直線とでなす角が内層部のテーパー角である。内層部のテーパー角が−５°未満の場合は、内層部の綾落ちが散発して、解舒糸切れを誘発し、５°を超える場合は、内層部の糸密度が高くなり、最内層と表層での物性差を発生させることがある。また図３（Ｂ）は、本発明のポリエステル仮撚加工糸パッケージにおける外層部のテーパー角を例示するための模式図である。巻取軸に対して垂直な直線と、その直線をパッケージ側に傾斜させ、外層部
と接する直線とでなす角が外層部のテーパー角である。外層部のテーパー角が１４°未満の場合は、パッケージ表面の端面周辺に耳立ちが発生し、パッケージ形成時に巻取りローラーとの衝撃が集中するため、糸物性、染め品位低下等の問題を発生しやすく、さらに前記した解舒糸切れを誘発することもある。３４°を超えると外層部の糸密度が低すぎるため輪抜け等を誘発することがある。
Polyester false twisted yarn of the package of the present invention, the taper angle is 0 ± 5 ° of the inner portion of the package is in the form of a taper angle of the outer layer portion becomes larger outer layer portion than the inner layer portion so as to be 24 ± 10 ° It is preferable. By forming the polyester false twisted yarn package form within this range, the package end face is not traversed, and the formed package surface has no irregularities in the winding axis direction. Thus, no entanglement due to rolling occurs, and a package with good unwinding property can be obtained. 3A and 3B are schematic views for illustrating the taper angle of the cheese-like package of the polyester false twisted yarn of the present invention. The taper angle is an angle formed by a normal direction perpendicular to the winding axis of the package and a straight line that comes into contact with the package end surface when the straight line is inclined toward the package side. Then, the circumference where the winding thickness is 1/4 from the innermost layer obtained by dividing the winding thickness into four equal parts is the inner layer portion, and the circumference where the winding thickness is 3/4 from the innermost layer is the outer layer portion. The taper angles measured for each of the circumferences are defined as the taper angle of the inner layer part and the taper angle of the outer layer part. The taper angle of the inner layer portion and the taper angle of the outer layer portion are average values obtained by measuring four points for each. Here, the four points on the circumference are arbitrary four points spaced 90 ° from the center of the winding shaft. FIG. 3A is a schematic view for illustrating the taper angle of the inner layer portion in the polyester false twisted yarn package of the present invention. An angle formed by a straight line perpendicular to the winding axis and a straight line that inclines the straight line toward the package and contacts the inner layer portion is a taper angle of the inner layer portion. When the taper angle of the inner layer portion is less than −5 °, the inner layer portion is scattered, causing unraveling yarn breakage. When the taper angle exceeds 5 °, the yarn density of the inner layer portion is increased, and the innermost layer May cause a difference in physical properties between the surface layer and the surface layer. FIG. 3B is a schematic view for illustrating the taper angle of the outer layer portion in the polyester false twisted yarn package of the present invention. The angle formed by a straight line perpendicular to the winding axis and a straight line that inclines the straight line toward the package and contacts the outer layer portion is the taper angle of the outer layer portion. When the taper angle of the outer layer is less than 14 °, earing occurs around the end surface of the package surface, and the impact with the winding roller concentrates when forming the package, which causes problems such as yarn physical properties and dyeing quality degradation. It is easy to cause the above-mentioned unraveling yarn breakage. If the angle exceeds 34 °, the yarn density in the outer layer portion is too low, which may induce loop-out.
本発明のポリエステル仮撚加工糸チーズ状パッケージを構成する糸条の捲縮復元率は４０％以上であることが好ましい。より好ましくは４５％以上である。糸条の捲縮復元率が４０％以上の場合は、ストレッチ性が良好で、高い伸縮性の織編物を供給できる。 The crimp recovery rate of the yarn constituting the polyester false twisted yarn cheese-like package of the present invention is preferably 40% or more. More preferably, it is 45% or more. When the crimp recovery rate of the yarn is 40% or more, the stretchability is good and a highly stretchable woven or knitted fabric can be supplied.
次に、本発明のポリエステル仮撚加工糸のパッケージの製造方法を記載する。本発明に用いる原料ポリマーはポリエステルであることが好ましく、特に高収縮性と疎水性の両立といった観点から、ポリブチレンテレフタレートが好適に使用できる。これらは常法により溶融紡糸を行うことにより、部分配向未延伸糸（マルチフィラメント）を得ることができる。すなわち、部分配向未延伸糸は、原料ポリマーを好ましくは２３５℃〜２６０℃の温度で溶融し、紡糸口金から吐出し、糸条を形成させ、冷却風を吹き付けることによって糸条を冷却して、収束した後、油剤と交絡を付与し、巻取った巻取ったパッケージとすることができる。部分配向未延伸糸は、一般的に紡速２０００ｍ／分〜４０００ｍ／分程度の速度条件で紡糸、巻取られたパッケージのことであり、ポリマー分子鎖の配向が進んでいる部分とそうでない部分が混在した状態ではなく、糸条長手方向で均一な分子鎖の配向状態である。また多数の単繊維からなるマルチフィラメントであり総繊度、および単繊維数は任意に採用できる。また糸条の断面も丸形状のみならず、吸水性、速乾性の向上、風合い改善を狙った異形断面も好適に用いられる。特に異形断面マルチフィラメントの場合は、糸条が嵩高になるため綾落ちすることなく表面硬度を低く巻取ることができる傾向となり、最内層と表層での物性差を低減できる傾向にある。さらには本発明の目的を逸脱しない範囲で、第２成分や第３成分を共重合させてもよい。 Next, the manufacturing method of the package of the polyester false twisted yarn of this invention is described. The raw material polymer used in the present invention is preferably a polyester, and polybutylene terephthalate can be preferably used from the viewpoint of achieving both high shrinkage and hydrophobicity. These can be obtained by performing melt spinning by a conventional method to obtain partially oriented undrawn yarn (multifilament). That is, in the partially oriented undrawn yarn, the raw material polymer is preferably melted at a temperature of 235 ° C. to 260 ° C., discharged from the spinneret, the yarn is formed, and the yarn is cooled by blowing cooling air, After converging, it can be entangled with the oil and wound into a wound package. Partially oriented undrawn yarn is a package that is generally spun and wound under a speed condition of about 2000 m / min to 4000 m / min, and a portion in which the orientation of the polymer molecular chain is advanced and a portion that is not. Is not a mixed state but a uniform molecular chain orientation in the longitudinal direction of the yarn. Further, it is a multifilament composed of a large number of single fibers, and the total fineness and the number of single fibers can be arbitrarily adopted. In addition, the cross section of the yarn is not limited to a round shape, and an irregular cross section aiming at improving water absorption, quick drying and improving the texture is also preferably used. In particular, in the case of an irregular cross-section multifilament, since the yarn becomes bulky, it tends to be able to wind up with a low surface hardness without falling, and the physical property difference between the innermost layer and the surface layer tends to be reduced. Furthermore, the second component and the third component may be copolymerized without departing from the object of the present invention.
次いで、得られた部分配向未延伸糸を延伸仮撚加工することにより、本発明のポリエステル仮撚加工糸のパッケージを得ることができる。本発明の仮撚加工は、マルチフィラメント部分配向未延伸糸を延伸しながら、仮撚を施す加工方法であり、糸条は加熱されながら加撚され、仮撚ディスク通過後に解撚されて嵩高な風合いとなる。その後、空気ノズルにて交絡を付与し、追油剤を塗布して、紙管に巻取ってパッケージを形成する。ポリブチレンテレフタレートの部分配向未延伸糸を延伸仮撚加工する際、仮撚ヒーター温度を好ましくは１６０〜２００℃の温度にて糸条を加熱し、延伸倍率を好ましくは１．３〜２．３倍、糸速に対するフリクションディスク表面の走行速度比を好ましくは１．５〜２．５の範囲で仮撚加工を実施する。本発明のポリエステル仮撚加工糸のパッケージは、巻取り開始時の巻幅、すなわち糸条トラバース幅に対する最終的な巻上がりのチーズ状パッケージの直径の値（パッケージ径／巻始めの幅）が１以下、かつ巻始めの巻幅が２００ｍｍ以上のチーズ状パッケージで有効である。またパッケージ形成直前の走行糸条の張力（以下巻張力と称する。）を延伸仮撚後の総繊度に対して０．１２ｇ／ｄｔｅｘ以下として巻取り、さらにパッケージ形成過程におけるトラバース幅を制御することにより、前述したパッケージ形状、およびパッケージ端面硬度を実現する。 Subsequently, the polyester false twisted yarn package of the present invention can be obtained by subjecting the obtained partially oriented undrawn yarn to drawn false twisting. The false twisting of the present invention is a processing method in which false twisting is performed while drawing a multifilament partially oriented unstretched yarn, and the yarn is twisted while being heated and untwisted after passing through the false twisting disk and is bulky. It becomes a texture. Thereafter, entanglement is imparted by an air nozzle, a lubricant is applied, and the product is wound around a paper tube to form a package. When drawing and twisting the partially oriented undrawn yarn of polybutylene terephthalate, the yarn is heated at a false twist heater temperature of preferably 160 to 200 ° C., and the draw ratio is preferably 1.3 to 2.3. The false twisting is carried out with the ratio of the running speed of the friction disk surface to the yarn speed being preferably 1.5 to 2.5. The polyester false twisted yarn package of the present invention has a winding width at the start of winding, that is, the value of the final rolled cheese-like package diameter relative to the yarn traverse width (package diameter / winding start width) is 1. This is effective for a cheese-like package having a winding width of 200 mm or more at the beginning of winding. Further, the tension of the running yarn immediately before the package formation (hereinafter referred to as the winding tension) is wound up to 0.12 g / dtex or less with respect to the total fineness after the drawing false twist, and the traverse width in the package forming process is controlled. Thus, the above-described package shape and package end surface hardness are realized.
図４は、本発明のポリエステル仮撚加工糸のチーズ状パッケージのトラバース幅を例示説明するための模式図である。本発明のポリエステル仮撚加工糸は、巻始めから巻終わりまでのうちのある期間、および巻始めから巻終わりまでの全ての期間でトラバース幅を変化させて巻き取る。巻始めよりトラバース幅を一定の割合で減少させる（図４（Ａ））、または巻始めよりトラバース幅を一定の割合で減少させ、経過時間ｔ以降にて、さらにトラバース幅の減少させる（図４（Ｃ））、もしくは巻始めはトラバース幅を変化させず、経過時間ｔにて徐々に漸減させる（図４（Ｂ））、さらに巻始めはトラバース幅の変化を若干の漸増とし、本パッケージを経過時間ｔにて漸減へと変化させる（図４（Ｄ））方法を採用することにより本ポリエステル仮撚加工糸のパッケージを得ることができる。また、加えて、これら条件を複合させた方法も適宜採用できる。前記のトラバース幅の変化方法と経過時間ｔの設定は、延伸仮撚加工の際の他の条件、およびマルチフィラメントの糸条構成により若干異なるが、一般的なマルチフィラメントの糸条構成、延伸仮撚条件であれば図４（Ｃ）の方法で経過時間ｔは、巻始めから巻終わりの所用時間の１／２の経過時間を目安として巻取る方法が好適である。パッケージ形成の際の綾角は特に規定はないが、巻取り張力を漸減するようにトラバース速度を一定、もしくは任意に設定して綾角を変化させることは可能である。また、用いるフリクションディスクの材質、構成は特に限定されるものではないが、糸条に捲縮、嵩高性を付与する観点から、ディスクの硬度は８５度以上であり、３軸回転型ディスクを４枚以上用いた構成であることが好ましい。さらに延伸仮撚を施した後に、第２ヒーターを用いて捲縮、トルクの発現具合を任意に調整しても良く、交絡に関しては製織布帛品位の観点から交絡度が１００以下であること好ましい。 FIG. 4 is a schematic view for illustrating the traverse width of the cheese-like package of the polyester false twisted yarn of the present invention. The polyester false twisted yarn of the present invention is wound by changing the traverse width in a certain period from the beginning of winding to the end of winding and in all periods from the beginning to the end of winding. The traverse width is reduced at a constant rate from the start of winding (FIG. 4A), or the traverse width is reduced at a constant rate from the start of winding, and the traverse width is further reduced after the elapsed time t (FIG. 4). (C)) Or, at the beginning of winding, the traverse width is not changed and gradually decreases at the elapsed time t (FIG. 4B). Further, at the beginning of winding, the change in traverse width is slightly increased, and this package is By adopting the method of gradually decreasing at the elapsed time t (FIG. 4D), the present polyester false twisted yarn package can be obtained. In addition, a method in which these conditions are combined can be employed as appropriate. The method of changing the traverse width and the setting of the elapsed time t are slightly different depending on other conditions during drawing false twisting and the yarn configuration of the multifilament. If the twisting condition is used, the method of winding as shown in FIG. 4 (C) is preferably used with the elapsed time t as a guide of the elapsed time 1/2 of the required time from the beginning of winding to the end of winding. The traverse angle at the time of forming the package is not particularly specified, but it is possible to change the traverse angle by setting the traverse speed constant or arbitrarily so as to gradually reduce the winding tension. Further, although the material and configuration of the friction disk to be used are not particularly limited, from the viewpoint of imparting crimp and bulkiness to the yarn, the hardness of the disk is 85 degrees or more, and the triaxial rotating disk is 4 It is preferable to use a configuration in which more than one sheet is used. Furthermore, after performing false false twisting, the degree of crimping and expression of torque may be arbitrarily adjusted using a second heater, and the entanglement is preferably 100 or less from the viewpoint of woven fabric quality.
次に、実施例により本発明のポリエステル仮撚加工糸のパッケージについて、詳細に説明する。実施例と比較例中の評価は、次の方法により定めた。 Next, the package of the polyester false twisted yarn of the present invention will be described in detail by way of examples. Evaluation in Examples and Comparative Examples was determined by the following method.
＜捲縮復元率＞
仮撚加工糸を周長１．０ｍの検尺機にて１０回巻きしてカセ取りした後、このカセに繊度×０．００２×巻取回数×２／１．１１１ｇの初加重をかけて、９０℃×２０分間熱水処理し、脱水後１２時間以上放置する。放置後のカセに初荷重と繊度×０．１×巻取回数×２／１．１１１ｇの測定加重をかけて水中に垂下し２分間放置する。放置したカセの長さを測り、Ｌとする。さらに、測定荷重を除き初荷重だけにした状態で３分間放置し、カセの長さを測り、Ｌ１とする。次式により、伸縮復元率ＣＲを求めた。
伸縮復元率ＣＲ（％）＝｛（Ｌ−Ｌ１）／Ｌ｝×１００ 。
<Crimp restoration rate>
After winding the false twisted yarn 10 times with a measuring machine with a circumference of 1.0 m and taking the scum, apply an initial load of fineness x 0.002 x number of windings x 2 / 1.111 g , Treated at 90 ° C. for 20 minutes with hot water and allowed to stand for 12 hours or more after dehydration The initial load and fineness × 0.1 × number of windings × 2 / 1.111 g of measurement weight are applied to the cassette after leaving it, and it is suspended in water and left for 2 minutes. Measure the length of the left casket and set it to L. Furthermore, the test piece is left for 3 minutes in the state where only the initial load is excluded, and the length of the casket is measured to obtain L1. The expansion / contraction restoration rate CR was obtained from the following equation.
Expansion / contraction restoration rate CR (%) = {(L−L1) / L} × 100.
＜最内層と表層の染め差＞
得られたポリエステル仮撚加工糸のパッケージの表層を解舒して、巻返し装置にて糸長２０００ｍを巻取りパッケージ表層部のサンプリングをする。さらに残ったポリエステル仮撚加工糸のパッケージを剥ぎ取り、巻厚の長さ５ｍｍ以下の部分を同様に巻返し装置にて巻取り内層部のサンプリングをする。これらを隣接させた筒編物（目付９０ｇ／ｍ２）を作製して染料、助剤を入れた４０〜５０℃の温水に入れ、３０分の時間をかけて９８℃に昇温し、２０分放置後、湯洗い、乾燥の後、目視による染め差判定を実施する。染め差の乖離具合について、染め差なしを０点、染め差は若干あるが布帛異常にならない程度を１０点、染め差があり布帛異常になる程度を３０点、さらに染め差の程度により５０点、７０点と点数付けをする。３人の試験者により目視判定を行い、３人の平均点を染め差点数とした。得られた結果を次の３段階で評価し、○を合格とした。
○：染め差３０点未満
△：染め差３０点以上５０点未満
×：染め差５０点以上 。
<Dyeing difference between innermost layer and surface layer>
The surface layer of the obtained polyester false-twisted yarn package is unwound, the yarn length of 2000 m is wound up by a winding device, and the surface of the package layer is sampled. Further, the remaining package of the polyester false twisted yarn is peeled off, and the portion of the winding thickness of 5 mm or less is similarly sampled in the winding inner layer portion by a rewinding device. These were prepared tubular knitted fabric are adjacent (basis weight 90 g / m 2) dye, placed in a warm water of 40 to 50 ° C. containing the aid, the temperature was raised to 98 ° C. over a 30 minute period, 20 minutes After standing, washing with hot water and drying, the dyeing difference is visually determined. Regarding the difference in dyeing difference, 0 points when there is no dyeing difference, 10 points when there is some dyeing difference but does not cause a fabric abnormality, 30 points when there is a dyeing difference and the fabric becomes abnormal, and 50 points depending on the degree of dyeing difference. , Score 70 points. Visual evaluation was performed by three testers, and the average score of the three was dyed and used as the difference score. The obtained results were evaluated in the following three stages, and ○ was accepted.
○: Dyeing difference of less than 30 points Δ: Dyeing difference of 30 points or more and less than 50 points ×: Dyeing difference of 50 points or more
＜輸送テスト＞
得られたポリエステル仮撚加工糸パッケージを観測し、ケース梱包後、一般乗用車にて任意の経路を１０００ｋｍ走行する。再度、開封してパッケージ端面の輪抜けの有無を確認する。２４個のパッケージについて観測をして、得られた結果を次の３段階で評価し、○を合格とした。
○：２４個中、輪抜けパッケージが０個
△：２４個中、輪抜けパッケージが１個発生
×：２４個中、輪抜けパッケージが２個以上発生 。
<Transport test>
The obtained polyester false twisted yarn package is observed, and after packaging the case, the vehicle travels 1000 km on a general passenger car. Open the package again and check if there is any missing ring on the package edge. Observation was made on 24 packages, and the obtained results were evaluated in the following three stages.
○: Out of 24, 0 missing packages Δ: Out of 24, 1 missing package x: Out of 24, 2 or more missing packages occurred.
＜解舒性テスト＞
得られたポリエステル仮撚加工糸のパッケージ２４個に対して、糸条速さ８５０ｍ／分で解舒して、そのときの糸切れ回数を測定した。得られた結果を次の３段階で評価し、○を合格とした。
○：糸切れ件数 １件以下
△：糸切れ件数 ２件以上、４件以下
×：糸切れ件数 ５件以上 。
<Unsolvability test>
The 24 polyester twisted yarn packages obtained were unwound at a yarn speed of 850 m / min, and the number of yarn breaks at that time was measured. The obtained results were evaluated in the following three stages, and ○ was accepted.
○: Number of thread breakage 1 or less △: Number of thread breakage 2 or more, 4 or less ×: Number of thread breakage 5 or more.
（実施例１）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１５ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を６ｇ以下、トラバース回転数を一定、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して７時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は６８°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が４．２％、（端面硬度（３）／端面硬度（２））の増加率が６．０％、テーパー角（内層部／外層部）は（０°／２５°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
Example 1
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 115 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Winding with a winding tension of 6 g or less when forming a package, a constant traverse rotation speed, a winding angle of 17 ° at the beginning of winding, and a constant reduction in the traverse width at a rate of 1 mm / 1 hour. The polyester false twisted yarn was wound by changing the conditions so that the required time until the time was constantly reduced at a rate of 1.2 mm / hour from 7 hours after 14 hours. The polyester false twisted yarn package thus obtained had a surface hardness of 68 ° and an increase rate of end face hardness (end face hardness (2) / end face hardness (1)) of 4.2%, (end face hardness (3) / End face hardness (2)) was 6.0%, and the taper angle (inner layer / outer layer) was (0 ° / 25 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例２）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面３６ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１０ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を８ｇ以下、トラバース回転数を一定、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して７時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は７４°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が８．５％、（端面硬度（３）／端面硬度（２））の増加率が３．９％、テーパー角（内層部／外層部）は（１°／２４°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 2)
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 36 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 110 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Winding at the time of forming the package is 8 g or less, traverse rotation speed is constant, winding traverse angle is 17 °, winding is reduced at a rate of 1 mm / 1 hour, winding start to winding end The polyester false twisted yarn was wound by changing the conditions so that the required time until the time was constantly reduced at a rate of 1.2 mm / hour from 7 hours after 14 hours. The polyester false twisted yarn package thus obtained had a surface hardness of 74 ° and an increase rate of end face hardness (end face hardness (2) / end face hardness (1)) of 8.5%, (end face hardness (3) / End face hardness (2)) was increased by 3.9%, and the taper angle (inner layer portion / outer layer portion) was (1 ° / 24 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例３）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１２ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．２８、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を６ｇ以下、トラバース回転数を漸次減少させた条件にて、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して８時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は５８°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が２．０％、（端面硬度（３）／端面硬度（２））の増加率が４．０％、テーパー角（内層部／外層部）は（４°／１５°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
Example 3
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled , A partially oriented undrawn yarn having a total fineness of 112 dtex was collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.28, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Under the condition that the winding tension when forming the package is 6 g or less and the traverse rotational speed is gradually reduced, the winding start angle is set to 17 °, and the traverse width is constantly reduced at a rate of 1 mm / 1 hour. The polyester false twisted yarn was wound by changing the conditions so that the time required from the beginning of winding to the end of winding was constantly reduced at a rate of 1.2 mm / hour after 8 hours with respect to 14 hours. . The polyester false twisted yarn package thus obtained had a surface hardness of 58 ° and an increase rate of the end face hardness (end face hardness (2) / end face hardness (1)) of 2.0%, (end face hardness (3) / End face hardness (2)) was 4.0%, and the taper angle (inner layer / outer layer) was (4 ° / 15 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例４）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１３ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を６ｇ以下、トラバース回転数を漸次増加、巻始めの綾角は１６°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して６時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は６２°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が８．０％、（端面硬度（３）／端面硬度（２））の増加率が９．３％、テーパー角（内層部／外層部）は（−４°／３３°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 4)
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 113 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. The winding tension when forming the package is 6 g or less, the traverse rotational speed is gradually increased, the winding angle is set to 16 °, and the traverse width is constantly reduced at a rate of 1 mm / 1 hour. The polyester false twisted yarn was wound by changing the conditions so that the required time to the end was constantly reduced at a rate of 1.2 mm / hour after 14 hours from 14 hours. The polyester false twisted yarn package thus obtained had a surface hardness of 62 ° and an increase rate of the end face hardness of 8.0% (end face hardness (2) / end face hardness (1)) (end face hardness (3)). / End surface hardness (2)) was increased by 9.3%, and the taper angle (inner layer portion / outer layer portion) was (-4 ° / 33 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例５）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１３ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．２８、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を５ｇ以下、トラバース回転数を漸次減少させた条件にて、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して８時間以降、１４時間後のトラバース幅が１．６ｍｍ／時間になるように徐々に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は６０°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が２．０％、（端面硬度（３）／端面硬度（２））の増加率が２．０％、テーパー角（内層部／外層部）は（６°／１２°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 5)
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 113 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.28, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Under the condition that the winding tension at the time of forming the package is 5 g or less and the traverse rotational speed is gradually decreased, the winding angle is set to 17 °, and the traverse width is constantly reduced at a rate of 1 mm / 1 hour. Polyester false twist by changing the conditions so that the required time from the beginning of winding to the end of winding is 8 hours after 14 hours and gradually decreases so that the traverse width after 14 hours is 1.6 mm / hour. The processed yarn was wound up. The obtained polyester false twisted yarn package has a surface hardness of 60 °, and an increase rate of the end surface hardness is 2.0% (end surface hardness (2) / end surface hardness (1)) (end surface hardness (3)). / End face hardness (2)) was 2.0%, and the taper angle (inner layer / outer layer) was (6 ° / 12 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例６）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１５ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を８ｇ以下、トラバース回転数を漸次増加、巻始めの綾角は１５°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して６時間以降、１４時間後のトラバース幅が１．６ｍｍ／時間になるように徐々に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は５７°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が１０．０％、（端面硬度（３）／端面硬度（２））の増加率が９．１％、テーパー角（内層部／外層部）は（−７°／３６°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 6)
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a round cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 115 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Winding tension at the time of forming the package is 8 g or less, traverse speed is gradually increased, winding angle is set at 15 °, winding is reduced at a rate of 1 mm / 1 hour, winding from the beginning of winding. Winding the polyester false twisted yarn by changing the conditions so that the time required until the end is 6 hours after 14 hours, and the traverse width after 14 hours is gradually reduced to 1.6 mm / hour. It was. The obtained polyester false twisted yarn package has a surface layer hardness of 57 ° and an increasing rate of end surface hardness (end surface hardness (2) / end surface hardness (1)) of 10.0%, (end surface hardness (3) / End face hardness (2)) was increased by 9.1%, and the taper angle (inner layer / outer layer) was (−7 ° / 36 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例７）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、丸断面１２ホールと六葉断面１２ホールの合計２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１５ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を６ｇ以下、トラバース回転数を一定、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して７時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は５２°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が４．３％、（端面硬度（３）／端面硬度（２））の増加率が６．３％、テーパー角（内層部／外層部）は（０°／２４°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 7)
After melting at a spinning temperature of 255 ° C. using polybutylene terephthalate, it is discharged from a spinneret having a discharge hole with a total of 24 holes of 12 round holes and 12 holes of six leaves, and cooled by blowing cooling air onto the yarn. Then, while supplying the oil agent, converging, and winding with confounding, winding was performed at a spinning speed of 2700 m / min, and a partially oriented undrawn yarn having a total fineness of 115 dtex was collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Winding with a winding tension of 6 g or less when forming a package, a constant traverse rotation speed, a winding angle of 17 ° at the beginning of winding, and a constant reduction in the traverse width at a rate of 1 mm / 1 hour. The polyester false twisted yarn was wound by changing the conditions so that the required time until the time was constantly reduced at a rate of 1.2 mm / hour from 7 hours after 14 hours. The polyester false twisted yarn package thus obtained had a surface hardness of 52 ° and an increase rate of end face hardness (end face hardness (2) / end face hardness (1)) of 4.3%, (end face hardness (3) / End face hardness (2)) was increased by 6.3%, and the taper angle (inner layer portion / outer layer portion) was (0 ° / 24 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（実施例８）
ポリブチレンテレフタレートを用いて紡糸温度２５５℃にて溶融後、Ｘ断面２４ホールの吐出孔を有した紡糸口金から吐出し、糸条に冷却風を吹き付け冷却し、油剤を供給し集束させ、交絡付与を行いながら、紡速２７００ｍ／分の速度で巻取り、総繊度１１５ｄｔｅｘの部分配向未延伸糸を採取した。仮撚ヒーター温度を１８０℃、延伸倍率を１．３７、加工時の糸速に対するフリクションディスク表面の走行速度比を２．０５として延伸仮撚加工を施して交絡付与を行い、外径６５ｍｍ、巻取り軸方向の長さ２８９．５ｍｍの紙管を中央部にトラバース幅２４０ｍｍにて巻取った。パッケージを形成する際の巻張力を６ｇ以下、トラバース回転数を一定、巻始めの綾角は１７°として巻取り、トラバース幅を１ｍｍ／１時間の割合で一定に減少させ、巻始めから巻終わりまでの所要時間が１４時間に対して７時間経過後より１．２ｍｍ／時間の割合にて一定に減少させるように条件を変化させてポリエステル仮撚加工糸を巻取った。得られたポリエステル仮撚加工糸パッケージの表層硬度は４８°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が７．１％、（端面硬度（３）／端面硬度（２））の増加率が４．４％、テーパー角（内層部／外層部）は（−１°／２２°）であった。最内層と表層の染め差は良好であり、輸送テスト、解舒性テストの結果も良好であった。結果を表１に示す。
(Example 8)
After melting at a spinning temperature of 255 ° C using polybutylene terephthalate, it is discharged from a spinneret with a discharge hole with an X cross section of 24 holes, cooled by blowing cooling air onto the yarn, supplied with an oil agent, converged, and entangled Was carried out at a spinning speed of 2700 m / min, and partially oriented undrawn yarns having a total fineness of 115 dtex were collected. The temperature of the false twisting heater is 180 ° C., the draw ratio is 1.37, and the running speed ratio of the friction disk surface to the yarn speed during processing is 2.05. A paper tube having a length of 289.5 mm in the take-off axis direction was wound around the center with a traverse width of 240 mm. Winding with a winding tension of 6 g or less when forming a package, a constant traverse rotation speed, a winding angle of 17 ° at the beginning of winding, and a constant reduction in the traverse width at a rate of 1 mm / 1 hour. The polyester false twisted yarn was wound by changing the conditions so that the required time until the time was constantly reduced at a rate of 1.2 mm / hour from 7 hours after 14 hours. The polyester false twisted yarn package thus obtained had a surface hardness of 48 ° and an increase rate of end face hardness (end face hardness (2) / end face hardness (1)) of 7.1%, (end face hardness (3) / End surface hardness (2)) was increased by 4.4%, and the taper angle (inner layer portion / outer layer portion) was (-1 ° / 22 °). The dyeing difference between the innermost layer and the surface layer was good, and the results of the transportation test and the unwinding test were also good. The results are shown in Table 1.
（比較例１）
実施例２において延伸仮撚加工でのパッケージ形成の際の巻張力を１０ｇ以下、トラバース回転数を漸次減少させる以外は同様にして紡糸、延伸仮撚加工を施し、得られたポリエステル仮撚加工糸パッケージの表層硬度は７７°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が７．０％、（端面硬度（３）／端面硬度（２））の増加率が９．８％、テーパー角（内層部／外層部）は（１°／２５°）であった。最内層と表層にて染め差が見受けられた。輸送テスト、解舒性テストの結果は良好であった。結果を表２に示す。
(Comparative Example 1)
The polyester false twisted yarn obtained in the same manner as in Example 2 except that the winding tension at the time of forming the package by drawing false twisting was 10 g or less and the traverse rotational speed was gradually decreased, and spinning and drawing false twisting were performed in the same manner. The surface layer hardness of the package is 77 °, and the increase rate of the end face hardness is 7.0% (end face hardness (3) / end face hardness (2)) of (end face hardness (2) / end face hardness (1)). The increase rate was 9.8%, and the taper angle (inner layer portion / outer layer portion) was (1 ° / 25 °). There was a difference in dyeing between the innermost layer and the surface layer. The results of the transportation test and the unraveling test were good. The results are shown in Table 2.
（比較例２）
実施例３において延伸仮撚加工でのパッケージ形成の際の巻張力を９ｇ以下、トラバース回転数をさらに漸次減少させる以外は同様にして紡糸、延伸仮撚加工を施し、得られたポリエステル仮撚加工糸パッケージの表層硬度は５９°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が０％、（端面硬度（３）／端面硬度（２））の増加率が２．０％、テーパー角（内層部／外層部）は（４°／１５°）であった。最内層と表層の染め差は良好であったが、輸送テストで輪抜けが発生した。解舒性テストの結果は良好であった。結果を表２に示す。
(Comparative Example 2)
A polyester false twisting process was carried out in the same manner as in Example 3, except that the winding tension at the time of forming the package by the drawing false twisting process was 9 g or less, and the spinning and drawing false twisting processes were carried out in the same manner except that the traverse rotation speed was further reduced The surface hardness of the yarn package is 59 °, and the increase rate of the end surface hardness is 0% of (end surface hardness (2) / end surface hardness (1)), and the increase of (end surface hardness (3) / end surface hardness (2)). The rate was 2.0%, and the taper angle (inner layer portion / outer layer portion) was (4 ° / 15 °). Although the difference in dyeing between the innermost layer and the surface layer was good, loop-out occurred in the transportation test. The results of the unraveling test were good. The results are shown in Table 2.
（比較例３）
実施例４において延伸仮撚加工でのパッケージ形成の際の巻張力を５ｇ以下、トラバース回転数をさらに漸次増加させる以外は同様にして紡糸、延伸仮撚加工を施し、得られたポリエステル仮撚加工糸パッケージの表層硬度は６０°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が１０．９％、（端面硬度（３）／端面硬度（２））の増加率が１１．８％、テーパー角（内層部／外層部）は（−５°／３４°）であった。最内層と表層の染め差は良好であり、輸送テストの結果も良好であった。しかし解舒性テストでは糸切れが散発した。結果を表２に示す。
(Comparative Example 3)
In Example 4, the polyester false twisting was carried out in the same manner except that the winding tension at the time of forming the package by drawing false twisting was 5 g or less and the traverse rotation speed was further increased, and spinning and drawing false twisting were similarly performed. The surface hardness of the yarn package is 60 °, and the increase rate of the end surface hardness is 10.9% of (end surface hardness (2) / end surface hardness (1)) (end surface hardness (3) / end surface hardness (2)). The increase rate was 11.8%, and the taper angle (inner layer portion / outer layer portion) was (−5 ° / 34 °). The difference in dyeing between the innermost layer and the surface layer was good, and the results of the transportation test were also good. However, thread breaks occurred sporadically in the unwinding test. The results are shown in Table 2.
（比較例４）
実施例７において延伸仮撚加工でのパッケージ形成の際の巻張力を１１ｇ以下、トラバース回転数を漸次減少させる以外は同様にして紡糸、延伸仮撚加工を施し、得られたポリエステル仮撚加工糸パッケージの表層硬度は７８°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が７．１％、（端面硬度（３）／端面硬度（２））の増加率が１０．０％、テーパー角（内層部／外層部）は（−３°／２６°）であった。最内層と表層にて染め差が見受けられた。輸送テスト、解舒性テストの結果は良好であった。結果を表２に示す。
(Comparative Example 4)
The polyester false twisted yarn obtained in the same manner as in Example 7 except that the winding tension at the time of forming the package by drawing false twisting was 11 g or less and the traverse rotational speed was gradually decreased, and spinning and drawing false twisting were similarly performed. The surface layer hardness of the package is 78 °, and the increase rate of the end face hardness is 7.1% (end face hardness (3) / end face hardness (2)) (end face hardness (2) / end face hardness (1)). The increase rate was 10.0%, and the taper angle (inner layer portion / outer layer portion) was (−3 ° / 26 °). There was a difference in dyeing between the innermost layer and the surface layer. The results of the transportation test and the unraveling test were good. The results are shown in Table 2.
（比較例５）
実施例８において延伸仮撚加工でのパッケージ形成の際の巻張力を１０ｇ以下、トラバース回転数を漸次減少させる以外は同様にして紡糸、延伸仮撚加工を施し、得られたポリエステル仮撚加工糸パッケージの表層硬度は７８°、端面硬度の増加率は（端面硬度（２）／端面硬度（１））の増加率が７．３％、（端面硬度（３）／端面硬度（２））の増加率が６．８％、テーパー角（内層部／外層部）は（０°／２５°）であった。最内層と表層にて染め差が見受けられた。輸送テスト、解舒性テストの結果は良好であった。結果を表２に示す。
(Comparative Example 5)
The polyester false twisted yarn obtained in the same manner as in Example 8 except that the winding tension at the time of forming the package by drawing false twisting was 10 g or less and the traverse rotational speed was gradually decreased, and spinning and drawing false twisting were similarly performed. The surface layer hardness of the package is 78 °, and the increase rate of the end surface hardness is (end surface hardness (2) / end surface hardness (1)) increase rate of 7.3%, (end surface hardness (3) / end surface hardness (2)). The increase rate was 6.8%, and the taper angle (inner layer portion / outer layer portion) was (0 ° / 25 °). There was a difference in dyeing between the innermost layer and the surface layer. The results of the transportation test and the unraveling test were good. The results are shown in Table 2.
Claims (3)
ここで、テーパー角は、パッケージの巻取軸に対して垂直な法線方向と、その直線をパッケージ側に傾斜させた際にパッケージ端面と接触する直線とがなす角である。そして巻厚の高さを４等分した最内層より巻厚が１／４となる円周を内層部、最内層より巻厚が３／４の円周となる円周を外層部として、２個の円周の各々に対して測定したテーパー角を、内層部のテーパー角、および外層部のテーパー角と定義する。 Claim 1, wherein the at package, the taper angle is 0 ± 5 ° of the inner layer portion, the taper angle of the outer layer portion is increased gradually toward the outer portion from the inner portion as a range of 24 ± 10 ° Polyester false twisted yarn package as described.
Here, the taper angle is an angle formed by a normal direction perpendicular to the winding axis of the package and a straight line that comes into contact with the package end surface when the straight line is inclined toward the package side. Then, the circumference where the winding thickness is 1/4 from the innermost layer obtained by dividing the winding thickness into four equal parts is the inner layer portion, and the circumference where the winding thickness is 3/4 from the innermost layer is the outer layer portion. The taper angles measured for each of the circumferences are defined as the taper angle of the inner layer part and the taper angle of the outer layer part.
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