JP7234467B2 - Composite crimped fiber used for knitted fabric and method for producing the same - Google Patents
Composite crimped fiber used for knitted fabric and method for producing the same Download PDFInfo
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/32—Side-by-side structure; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
- D01D5/23—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool by asymmetrical cooling of filaments, threads, or the like, leaving the spinnerettes
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
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Description
本発明は概してポリエステル繊維製造技術に関し、より詳しくは、一種の編物に用いる複合捲縮繊維及びその製造方法に関する。 FIELD OF THE INVENTION The present invention generally relates to polyester fiber manufacturing technology, and more particularly to a bicomponent crimped fiber for use in a type of knit fabric and a method for manufacturing the same.
化学繊維にとって、異なるポリマー原料から得られた繊維の性能は全く異なり、それぞれに優劣がある。このため、異なる繊維の性能を総合してそれぞれの優位性を発揮する繊維製品がますます増えている。そのうちに、並列型二成分複合繊維は、二成分の異なる熱収縮性によって繊維軸からずれた曲げが生じて羊毛のような永久的ならせん状立体捲縮が現われ、さらに、こんな捲縮形態は優れた耐久性と高い弾性を有し、生地に優れた弾性、嵩高性及びカバー性を与え、アパレル業界に広く応用されている。しかしながら、ポリエステル系二成分複合繊維の製造方に対する要求が高い、すなわち吐出孔内のポリマー融体流動挙動の制御は適切にしなければならない一方、主に編物に用いるポリエステル系二成分複合繊維に対する吸湿排汗機能の向上はまだ工夫されない。 For chemical fibers, the performance of fibers obtained from different polymer raw materials is completely different, and each has advantages and disadvantages. For this reason, more and more textile products are being developed in which the performance of different fibers is combined to exhibit their superiority. In the meantime, the side-by-side bicomponent conjugate fiber is bent away from the fiber axis due to the different heat shrinkability of the two components, and a permanent helical three-dimensional crimp appears like wool. It has excellent durability and high elasticity, and is widely used in the apparel industry because it gives the fabric excellent elasticity, bulkiness and coverability. However, there are high requirements for the production method of the polyester bicomponent conjugate fiber, that is, the flow behavior of the polymer melt in the discharge hole must be appropriately controlled. The improvement of the sweat function has not yet been devised.
よって、立体捲縮しながら吸湿排汗機能にも優れたポリエステル複合繊維の開発は意味深い課題である。 Therefore, the development of a polyester composite fiber that is three-dimensionally crimped and has excellent moisture-absorbing and sweat-absorbing properties is a significant issue.
本発明は、従来のポリエステル複合繊維の吸湿排汗性が足りないという問題を克服した、一種の編物に用いる複合捲縮繊維及びその製造方法を提供する。 The present invention provides a conjugate crimped fiber for use in a kind of knitted fabric and a method for producing the same, which overcomes the problem of insufficient moisture absorption and perspiration drainage of conventional polyester conjugate fibers.
このため本発明は、以下の技術案を用いる。即ち、
編物に用いる複合捲縮繊維の製造方法であって、延伸糸(Fully Drawn Yarn, FDY)工程に基づき、ポリエチレンテレフタレート(PET)とポリブチレンテレフタレート(PBT)とにより円形並列複合繊維を製造する過程において、紡糸口金上の吐出孔を円形からY字型に変更し、環状吹きで冷却し、紡糸口金上のY字型吐出孔の配置が一定の条件を満たすように制御し、FDYを製造し、FDYに対し、弛緩熱処理して編物に用いる複合捲縮繊維を得る(本発明で製造されるY字型並列複合繊維に用いる紡糸アセンブリは、従来技術で製造される円形芯鞘型複合繊維に用いる紡糸アセンブリに基づくが、吐出孔の形状が異なる)。
同一のY字型吐出孔の3スリットの長さの比率は1.0:1.1~1.4:2.0~2.5であり、幅比率は1.5:1.5:1であり、最短のスリットの長幅比は2.5~3.5:1であり、隣接する2スリットの中心線のなす角は120°であり、各Y字型吐出孔の形状および大きさは同一であり、
前記一定の条件は、いずれかのY字型吐出孔の最長のスリットの中心線を基準線として、その他のY字型吐出孔を2種類に分類し、一つの種類は、最長スリットの中心線が前記基準線と平行であり、別の種類は、最長のスリットの中心線が前記基準線と直交し、前記2種類のY字型吐出孔の数量は同じであり、
PETとPBTとが、各Y字型吐出孔のガイド孔を流動する際の接触面は互いに平行である(Y字型吐出孔のガイド孔の中において、PET及びPBTの見かけ粘度は近いため、両者の接触面は略平面である)。
Therefore, the present invention uses the following technical solutions. Namely
A method for producing composite crimped fibers used for knitting, in the process of producing circular parallel composite fibers from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) based on a fully drawn yarn (FDY) process , Change the discharge hole on the spinneret from circular to Y-shaped, cool by annular blowing, control the arrangement of the Y-shaped discharge hole on the spinneret to meet certain conditions, produce FDY, On the other hand, relaxation heat treatment is performed to obtain a conjugate crimped fiber used for knitting (the spinning assembly used for the Y-shaped side-by-side conjugate fiber produced by the present invention is the spinning assembly used for the circular core-sheath type conjugate fiber produced by the conventional technology. based on the assembly, but with a different shape of the discharge hole).
The length ratio of the three slits of the same Y-shaped discharge hole is 1.0:1.1-1.4:2.0-2.5, the width ratio is 1.5:1.5:1, and the length-width ratio of the shortest slit is 2.5-3.5. : 1, the angle formed by the center lines of two adjacent slits is 120°, the shape and size of each Y-shaped discharge hole are the same,
According to the above-mentioned constant conditions, the center line of the longest slit of any Y-shaped discharge hole is used as a reference line, and the other Y-shaped discharge holes are classified into two types, one type being the center line of the longest slit. is parallel to the reference line, another type has the center line of the longest slit perpendicular to the reference line, and the two types of Y-shaped discharge holes have the same number,
When PET and PBT flow through the guide holes of each Y-shaped discharge hole, the contact surfaces are parallel to each other (because the apparent viscosities of PET and PBT are similar in the guide holes of the Y-shaped discharge The contact surface between the two is substantially flat).
本発明に係る好適態様を以下に示す。 Preferred embodiments of the present invention are shown below.
前記編物に用いる複合捲縮繊維の製造方法において、PETとPBTとの質量比は30:70~70:30である。 In the method for producing the composite crimped fibers used for the knitted fabric, the mass ratio of PET and PBT is 30:70 to 70:30.
前記編物に用いる複合捲縮繊維の製造方法において、PETの固有粘度が0.50~0.58dL/gであり、PETに対応する紡糸ビームの温度が275~280℃であり、PBTの固有粘度が1.10~1.21dL/gであり、PBTに対応する紡糸ビームの温度が260~265℃である。 In the method for producing the composite crimped fiber used for the knitted fabric, the intrinsic viscosity of PET is 0.50 to 0.58 dL / g, the temperature of the spinning beam corresponding to PET is 275 to 280 ° C., and the intrinsic viscosity of PBT is 1.10 to 1.10. 1.21 dL/g, and the temperature of the spinning beam corresponding to PBT is 260-265°C.
前記編物に用いる複合捲縮繊維の製造方法において、FDY工程のパラメータは、紡糸温度は274~277℃、冷却温度は20~25℃、インターレースノズル圧力は0.20~0.30MPa、第1ローラ速度は2000~2200m/min、第1ローラ温度は75~85℃、第2ローラ速度は3300~3600m/min、第2ローラ温度は135~145℃、巻取速度は3230~3510m/minである。 In the manufacturing method of the composite crimped fiber used for the knitted fabric, the parameters of the FDY process are: spinning temperature 274 ~ 277 ° C, cooling temperature 20 ~ 25 ° C, interlace nozzle pressure 0.20 ~ 0.30 MPa, first roller speed 2000 ~2200m/min, the first roller temperature is 75~85℃, the second roller speed is 3300~3600m/min, the second roller temperature is 135~145℃, and the winding speed is 3230~3510m/min.
前記編物に用いる複合捲縮繊維の製造方法において、弛緩熱処理温度は90~120℃、処理時間は20~30minである。 In the method for producing the composite crimped fibers used for the knitted fabric, the relaxation heat treatment temperature is 90 to 120° C., and the treatment time is 20 to 30 minutes.
本発明は、前記好適態様のいずれか一項に記載する方法で製造する編物に用いる複合捲縮繊維も提供する。それは立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。 The present invention also provides bicomponent crimped fibers for use in knitted fabrics produced by the method according to any one of the above preferred embodiments. It has a three-dimensional crimped form and is composed of PET/PBT parallel composite monofilaments with a plurality of Y-shaped cross-sections, and an imaginary line perpendicular to the Y-shape dividing the Y-shape into two juxtaposed portions. When made, one part corresponds to PET and the other part corresponds to PBT.
好ましくは、前記編物に用いる複合捲縮繊維について、
中国国家標準規格GB6506-2001に基づき、その巻縮収縮率は50~54%、巻縮安定度は82~85%、巻縮伸長率は94~98%、巻縮弾性回復率は94~97%であり、
その破断強度は2.8cN/dtex以上、破断伸長率は43.0±3.0%、総繊度は700~200dtexである。
Preferably, for the conjugate crimped fibers used in the knitted fabric,
Based on the Chinese national standard GB6506-2001, its crimp shrinkage rate is 50-54%, crimp stability is 82-85%, crimp elongation rate is 94-98%, and crimp elastic recovery rate is 94-97%. % and
It has a breaking strength of 2.8 cN/dtex or more, a breaking elongation of 43.0±3.0%, and a total fineness of 700-200 dtex.
発明原理としては以下の通りである。 The principle of the invention is as follows.
本発明における編物に用いる複合捲縮繊維は、PETとPBTとを同じ口金板に位置するY字型吐出孔により圧出したFDYである。本発明の並列型複合紡糸加工において、吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとの間には大体平面的な境界面が形成しており、すべての吐出孔にとって、それらの境界面は互いに平行する。けれども、本発明における3スリットを有する吐出孔は、2つの方式で配列しており、すなわち、一方の吐出孔の最長スリットの中心線は基準線と平行にして他方は直交にする。さらに、本発明の紡糸加工に係る紡糸圧力と融体質量比は恒常的なので、各吐出孔の中の融体質量比も等しいである。それで吐出孔の内において2融体の境界面と吐出孔の最長スリットの配向とのなす角は、吐出孔の配列方式によって、異なる。したがって、配列方式の異なる吐出孔から圧出した複合単糸は、異なるPET/PBT区切る形式のY字型断面がしており、すなわち、異なる複合比率である。このような複合繊維に熱処理をかけると、PETとPBTとの熱収縮率差によって、立体捲縮形態が現れる。 The composite crimped fiber used for the knitted fabric in the present invention is FDY obtained by extruding PET and PBT through Y-shaped discharge holes located on the same spinneret plate. In the parallel composite spinning process of the present invention, a substantially planar interface is formed between the PET and PBT flowing into the discharge holes with approximately the same apparent viscosity, and for all discharge holes, their The interface planes are parallel to each other. However, the three-slit orifices in the present invention are arranged in two ways, namely, the centerline of the longest slit of one orifice is parallel to the reference line and the other is orthogonal. Furthermore, since the spinning pressure and melt mass ratio in the spinning process of the present invention are constant, the melt mass ratio in each discharge hole is also equal. Therefore, the angle formed by the boundary surface of the two melts and the orientation of the longest slit of the ejection hole varies depending on the arrangement of the ejection holes. Therefore, the composite single yarns extruded from the discharge holes with different arrangement methods have different Y-shaped cross-sections with different PET/PBT partition types, that is, different composite ratios. When such a composite fiber is heat-treated, a three-dimensional crimp appears due to the difference in heat shrinkage between PET and PBT.
なお、Y型断面のシャープな溝は毛細管現象を起こすことで水分を急速に吸い取り、拡散するので、Y型断面による生地は良い吸放湿性を持つ。さらに、Y形断面繊維は自発捲縮すれば、吸い取った水分はねじれた溝により生地内部から外へ導出されることもある。だから、本発明における編物に用いる複合捲縮繊維は、もっと良い吸放湿効果が期待できる。 The sharp grooves on the Y-shaped cross section cause capillary action to rapidly absorb and diffuse moisture, so the fabric with the Y-shaped cross section has good moisture absorption and desorption properties. Furthermore, if the Y-shaped cross-section fibers are spontaneously crimped, the absorbed moisture may be led out from the inside of the fabric through the twisted grooves. Therefore, the composite crimped fibers used in the knitted fabric of the present invention can be expected to have better moisture absorption and desorption effects.
本発明の利点としては、
(1)本発明の編物に用いる複合捲縮繊維の製造方法は、Y字型吐出孔及びY字型吐出孔とガイド孔中のPET及びPBTの溶融体の接触面との位置関係を限定し、得られた複合捲縮繊維中の異なるモノフィラメント中の2種の成分の間の接触面の大きさが異なる。
(2)本発明の編物に用いる複合捲縮繊維は、各モノフィラメントの断面において、各溶融体の接触面が異なるため、複合捲縮繊維は立体捲縮の形態を成す。
(3)本発明の編物に用いる複合捲縮繊維は、異形断面繊維であるとともに、立体自発捲縮であるため、溝が捻れ、より優れた吸放湿性能を有する。
Advantages of the present invention include:
(1) In the manufacturing method of the composite crimped fiber used for the knitted fabric of the present invention, the positional relationship between the Y-shaped discharge hole and the Y-shaped discharge hole and the contact surface of the melt of PET and PBT in the guide hole is limited. , the size of the contact surface between the two components in the different monofilaments in the resulting bicomponent crimped fibers is different.
(2) In the composite crimped fiber used for the knitted fabric of the present invention, the contact surface of each melt is different in the cross section of each monofilament, so the composite crimped fiber forms a three-dimensional crimp.
(3) The composite crimped fiber used in the knitted fabric of the present invention is a modified cross-section fiber and is three-dimensionally spontaneously crimped, so that the grooves are twisted and have excellent moisture absorption and desorption performance.
以下、実施例を挙げてさらに詳細に本発明を説明するが、本発明は、その要旨を超えない限り、以下の実施例によって限定されるものではない。なお、本発明の内容を読んだこの分野の技術者のいろいろな本発明を改正することを許されても、それは本発明の等価形として、本発明の請求の範囲内にも限定されている。なお、実施例における種々の物性および特性の測定方法は下記のとおりである。
本発明におけるY字型吐出孔の見取図は図1、紡糸口金の吐出孔配置概念図は図2に示す。Y字型吐出孔について、長さ比率は1.0:1.1~1.4:2.0~2.5としながら幅比率は1.5:1.5:1とし、さらに最短スリットの長幅比は2.5~3.5:1とし、隣接する2スリットの中心線のなす角は120°とし、当該編物に用いる複合捲縮繊維は、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにする。
図1と図2はただ表示のためであって、本発明を限定することがない。
EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited by the following examples as long as the gist thereof is not exceeded. It should be noted that even if a person skilled in the art who has read the content of the present invention is allowed to make various modifications to the present invention, it is also limited within the scope of the claims of the present invention as an equivalent form of the present invention. . Methods for measuring various physical properties and characteristics in Examples are as follows.
A sketch of the Y-shaped discharge holes in the present invention is shown in FIG. 1, and a conceptual diagram of the arrangement of the discharge holes of the spinneret is shown in FIG. For the Y-shaped discharge hole, the length ratio is 1.0:1.1-1.4:2.0-2.5, the width ratio is 1.5:1.5:1, and the length-to-width ratio of the shortest slit is 2.5-3.5:1. The angle formed by the center lines of the slits is 120°, and the composite crimped fibers used in the knitted fabric have discharge holes in which the center line of the longest slit is parallel to the center line of the longest slit of any of the discharge holes, The number of ejection holes that are perpendicular to the center line of the longest slit should be the same.
Figures 1 and 2 are for illustration only and do not limit the invention.
実施例1
編物に用いる複合捲縮繊維の製造方法は、質量比の55:45のPET(固有粘度は0.54dL/gとする)とPBT(固有粘度は1.16dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理する。そのうちに、
Y字型吐出孔は、長さ比率が1.0:1.1:2.0としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が2.7:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は275℃、PETに係る紡糸パック温度は279℃、PBTに係る紡糸パック温度は262℃、冷却温度は21℃、インターレースノズル圧力は0.3MPa、第1ローラ速度は2190m/min、第1ローラ温度は77℃、第2ローラ速度は3340m/min、第2ローラ温度は135℃、巻取速度は3270m/minとし;
弛緩熱処理温度は104℃、処理時間は27minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、巻縮収縮率が52%、巻縮安定度が83%、巻縮伸長率が96%、巻縮弾性回復率が96%、破断強度が2.8cN/dtex、破断伸長率が46%、単糸繊度が1.13dtexである。
Example 1
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.54 dL/g) and PBT (with an intrinsic viscosity of 1.16 dL/g) at a mass ratio of 55:45 through the FDY process. , It is extruded from a nozzle with a Y-shaped discharge hole, cooled by annular blowing to form FDY, and then subjected to relaxation heat treatment. someday,
The Y-shaped discharge hole has a length ratio of 1.0:1.1:2.0 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 275°C, the spinpack temperature for PET is 279°C, the spinpack temperature for PBT is 262°C, the cooling temperature is 21°C, the interlace nozzle pressure is 0.3 MPa, and the first roller speed is 2190 m/min. , the first roller temperature is 77°C, the second roller speed is 3340m/min, the second roller temperature is 135°C, and the winding speed is 3270m/min;
The relaxation heat treatment temperature is 104°C, and the treatment time is 27 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 52%, crimp stability of 83%, crimp elongation rate of 96%, crimp elastic recovery rate of 96%, and breaking strength of 2.8 cN/dtex. , the elongation at break is 46%, and the single yarn fineness is 1.13dtex.
実施例2
編物に用いる複合捲縮繊維の製造方法は、質量比の40:60のPET(固有粘度は0.5dL/gとする)とPBT(固有粘度は1.19dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理する。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.2:2.2としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が3.5:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は274℃、PETに係る紡糸パック温度は275℃、PBTに係る紡糸パック温度は265℃、冷却温度は20℃、インターレースノズル圧力は0.2MPa、第1ローラ速度は2150m/min、第1ローラ温度は76℃、第2ローラ速度は3360m/min、第2ローラ温度は141℃、巻取速度は3290m/minとし;
弛緩熱処理温度は120℃、処理時間は26minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、巻縮収縮率が54%、巻縮安定度が85%、巻縮伸長率が94%、巻縮弾性回復率が94%、破断強度が2.8cN/dtex、破断伸長率が43%、単糸繊度が1dtexとする。
Example 2
The method of manufacturing composite crimped fibers used for knitted fabrics is to combine PET (with an intrinsic viscosity of 0.5 dL/g) and PBT (with an intrinsic viscosity of 1.19 dL/g) at a mass ratio of 40:60 through the FDY process. , It is extruded from a nozzle with a Y-shaped discharge hole, cooled by annular blowing to form FDY, and then subjected to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.2:2.2 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 274°C, the spinning pack temperature for PET is 275°C, the spinning pack temperature for PBT is 265°C, the cooling temperature is 20°C, the interlace nozzle pressure is 0.2 MPa, and the first roller speed is 2150 m/min. , the first roller temperature is 76°C, the second roller speed is 3360m/min, the second roller temperature is 141°C, and the winding speed is 3290m/min;
The relaxation heat treatment temperature is 120°C, and the treatment time is 26 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 54%, crimp stability of 85%, crimp elongation rate of 94%, crimp elastic recovery rate of 94%, and breaking strength of 2.8 cN/dtex. , the breaking elongation rate is 43%, and the single yarn fineness is 1 dtex.
実施例3
編物に用いる複合捲縮繊維の製造方法は、質量比の30:70のPET(固有粘度は0.5dL/gとする)とPBT(固有粘度は1.1dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理する。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.4:2.5としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が2.5:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は274℃、PETに係る紡糸パック温度は275℃、PBTに係る紡糸パック温度は260℃、冷却温度は20℃、インターレースノズル圧力は0.2MPa、第1ローラ速度は2000m/min、第1ローラ温度は75℃、第2ローラ速度は3300m/min、第2ローラ温度は135℃、巻取速度は3230m/minとし;
弛緩熱処理温度は104℃、処理時間は27minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、巻縮収縮率が54%、巻縮安定度が82%、巻縮伸長率が94%、巻縮弾性回復率が94%、破断強度が2.91cN/dtex、破断伸長率が42%、単糸繊度が1.96dtexである。
Example 3
The method of manufacturing composite crimped fibers used for knitted fabrics is to mix PET (with an intrinsic viscosity of 0.5 dL/g) and PBT (with an intrinsic viscosity of 1.1 dL/g) at a mass ratio of 30:70 through the FDY process. , It is extruded from a nozzle with a Y-shaped discharge hole, cooled by annular blowing to form FDY, and then subjected to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.4:2.5 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 274°C, the spinning pack temperature for PET is 275°C, the spinning pack temperature for PBT is 260°C, the cooling temperature is 20°C, the interlacing nozzle pressure is 0.2 MPa, and the first roller speed is 2000 m/min. , the first roller temperature is 75°C, the second roller speed is 3300m/min, the second roller temperature is 135°C, and the winding speed is 3230m/min;
The relaxation heat treatment temperature is 104°C, and the treatment time is 27 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 54%, crimp stability of 82%, crimp elongation rate of 94%, crimp elastic recovery rate of 94%, and breaking strength of 2.91 cN/dtex. , the elongation at break is 42%, and the single yarn fineness is 1.96dtex.
実施例4
編物に用いる複合捲縮繊維の製造方法は、質量比の70:30のPET(固有粘度は0.53dL/gとする)とPBT(固有粘度は1.16dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理する。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.3:2.5としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が2.6:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は274℃、PETに係る紡糸パック温度は278℃、PBTに係る紡糸パック温度は261℃、冷却温度は21℃、インターレースノズル圧力は0.2MPa、第1ローラ速度は2200m/min、第1ローラ温度は83℃、第2ローラ速度は3550m/min、第2ローラ温度は145℃、巻取速度は3480m/minとし;
弛緩熱処理温度は113℃、処理時間は27minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、その巻縮収縮率が50%、巻縮安定度が83%、巻縮伸長率が95%、巻縮弾性回復率が95%、破断強度が2.98cN/dtex、破断伸長率が42%、単糸繊度が1.33dtexである。
Example 4
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.53 dL/g) and PBT (with an intrinsic viscosity of 1.16 dL/g) at a mass ratio of 70:30 through the FDY process. , It is extruded from a nozzle with a Y-shaped discharge hole, cooled by annular blowing to form FDY, and then subjected to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.3:2.5 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 274°C, the spinpack temperature for PET is 278°C, the spinpack temperature for PBT is 261°C, the cooling temperature is 21°C, the interlacing nozzle pressure is 0.2MPa, and the first roller speed is 2200m/min. , the first roller temperature is 83°C, the second roller speed is 3550m/min, the second roller temperature is 145°C, and the winding speed is 3480m/min;
The relaxation heat treatment temperature is 113°C, and the treatment time is 27 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 50%, a crimp stability of 83%, a crimp elongation rate of 95%, a crimp elastic recovery rate of 95%, and a breaking strength of 2.98 cN/. dtex, breaking elongation rate is 42%, single yarn fineness is 1.33dtex.
実施例5
編物に用いる複合捲縮繊維の製造方法は、質量比の60:40のPET(固有粘度は0.56dL/gとする)とPBT(固有粘度は1.15dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理することである。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.1:2.5としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が3.1:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は276℃、PETに係る紡糸パック温度は279℃、PBTに係る紡糸パック温度は261℃、冷却温度は23℃、インターレースノズル圧力は0.3MPa、第1ローラ速度は2050m/min、第1ローラ温度は78℃、第2ローラ速度は3430m/min、第2ローラ温度は140℃、巻取速度は3360m/minとし;
弛緩熱処理温度は114℃、処理時間は27minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、その巻縮収縮率が50%、巻縮安定度が85%、巻縮伸長率が97%、巻縮弾性回復率が97%、破断強度が2.99cN/dtex、破断伸長率が41%、単糸繊度が1.35dtexである。
Example 5
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.56 dL/g) and PBT (with an intrinsic viscosity of 1.15 dL/g) at a mass ratio of 60:40 through the FDY process. , extruding from a nozzle with a Y-shaped discharge hole, cooling by annular blowing to form FDY, and then subjecting it to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.1:2.5 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 276°C, the spinning pack temperature for PET is 279°C, the spinning pack temperature for PBT is 261°C, the cooling temperature is 23°C, the interlacing nozzle pressure is 0.3 MPa, and the first roller speed is 2050 m/min. , the first roller temperature is 78°C, the second roller speed is 3430m/min, the second roller temperature is 140°C, and the winding speed is 3360m/min;
The relaxation heat treatment temperature is 114°C, and the treatment time is 27 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 50%, a crimp stability of 85%, a crimp elongation rate of 97%, a crimp elastic recovery rate of 97%, and a breaking strength of 2.99 cN/. dtex, breaking elongation rate is 41%, single yarn fineness is 1.35dtex.
実施例6
編物に用いる複合捲縮繊維の製造方法は、質量比の40:60のPET(固有粘度は0.52dL/gとする)とPBT(固有粘度は1.11dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理することである。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.4:2.0としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が2.5:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は274℃、PETに係る紡糸パック温度は277℃、PBTに係る紡糸パック温度は260℃、冷却温度は22℃、インターレースノズル圧力は0.3MPa、第1ローラ速度は2060m/min、第1ローラ温度は83℃、第2ローラ速度は3460m/min、第2ローラ温度は136℃、巻取速度は3390m/minとし;
弛緩熱処理温度は104℃、処理時間は27minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、その巻縮収縮率が53%、巻縮安定度が82%、巻縮伸長率が94%、巻縮弾性回復率が94%、破断強度が2.99cN/dtex、破断伸長率が40%、単糸繊度が2dtexである。
Example 6
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.52 dL/g) and PBT (with an intrinsic viscosity of 1.11 dL/g) at a mass ratio of 40:60 through the FDY process. , extruding from a nozzle with a Y-shaped discharge hole, cooling by annular blowing to form FDY, and then subjecting it to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.4:2.0 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 274°C, the spinning pack temperature for PET is 277°C, the spinning pack temperature for PBT is 260°C, the cooling temperature is 22°C, the interlacing nozzle pressure is 0.3 MPa, and the first roller speed is 2060 m/min. , the first roller temperature is 83°C, the second roller speed is 3460m/min, the second roller temperature is 136°C, and the winding speed is 3390m/min;
The relaxation heat treatment temperature is 104°C, and the treatment time is 27 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 53%, a crimp stability of 82%, a crimp elongation rate of 94%, a crimp elastic recovery rate of 94%, and a breaking strength of 2.99 cN/. dtex, breaking elongation rate is 40%, single yarn fineness is 2dtex.
実施例7
編物に用いる複合捲縮繊維の製造方法は、質量比の70:30のPET(固有粘度は0.58dL/gとする)とPBT(固有粘度は1.21dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理することである。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.2:2.4としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が3.5:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は277℃、PETに係る紡糸パック温度は280℃、PBTに係る紡糸パック温度は265℃、冷却温度は25℃、インターレースノズル圧力は0.3MPa、第1ローラ速度は2200m/min、第1ローラ温度は85℃、第2ローラ速度は3600m/min、第2ローラ温度は145℃、巻取速度は3510m/minとし;
弛緩熱処理温度は120℃、処理時間は20minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、その巻縮収縮率が50%、巻縮安定度が85%、巻縮伸長率が98%、巻縮弾性回復率が98%、破断強度が3cN/dtex、破断伸長率が40%、単糸繊度が1dtexである。
Example 7
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.58 dL/g) and PBT (with an intrinsic viscosity of 1.21 dL/g) at a mass ratio of 70:30 through the FDY process. , extruding from a nozzle with a Y-shaped discharge hole, cooling by annular blowing to form FDY, and then subjecting it to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.2:2.4 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 277°C, the spinning pack temperature for PET is 280°C, the spinning pack temperature for PBT is 265°C, the cooling temperature is 25°C, the interlacing nozzle pressure is 0.3 MPa, and the first roller speed is 2200 m/min. , the first roller temperature is 85°C, the second roller speed is 3600m/min, the second roller temperature is 145°C, and the winding speed is 3510m/min;
The relaxation heat treatment temperature is 120°C, and the treatment time is 20 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used for the knitted fabric has a crimp shrinkage rate of 50%, a crimp stability of 85%, a crimp elongation rate of 98%, a crimp elastic recovery rate of 98%, and a breaking strength of 3 cN/dtex. , the elongation at break is 40% and the single yarn fineness is 1 dtex.
実施例8
編物に用いる複合捲縮繊維の製造方法は、質量比の35:65のPET(固有粘度は0.56dL/gとする)とPBT(固有粘度は1.18dL/gとする)とを、FDY工程により、Y字型吐出孔を有する口金で圧出し、環状吹きで冷却してFDYになさせ、さらにそれを弛緩熱処理することである。そのうち、
Y字型吐出孔は、長さ比率が1.0:1.3:2.5としながら幅比率は1.5:1.5:1とし三つのスリットを有し、最短スリットの長幅比が3.2:1とし、互いに隣接する2スリットの中心線のなす角が120°とし、そしてすべての吐出孔にとって、いずれかの吐出孔の最長スリットの中心線に対して、最長スリットの中心線が平行にする吐出孔と、最長スリットの中心線が直交にする吐出孔との数量は同じにし;
各吐出孔の中に流動する見掛け粘度がほぼ等しいPETとPBTとのなす境界面は大体平面とし;
FDY工程に関する紡糸温度は277℃、PETに係る紡糸パック温度は280℃、PBTに係る紡糸パック温度は265℃、冷却温度は21℃、インターレースノズル圧力は0.2MPa、第1ローラ速度は2060m/min、第1ローラ温度は80℃、第2ローラ速度は3510m/min、第2ローラ温度は142℃、巻取速度は3440m/minとし;
弛緩熱処理温度は100℃、処理時間は29minとする。
得られた編物に用いる複合捲縮繊維は、立体捲縮形態を有し、且つ、複数の断面がY字型のPET/PBT並列複合モノフィラメントから構成され、前記Y字型を並列する2部分に分ける前記Y字型と直交する仮想線を作ると、一の部分はPETに対応し、他方の部分はPBTに対応する。当該編物に用いる複合捲縮繊維は、その巻縮収縮率が54%、巻縮安定度が82%、巻縮伸長率が97%、巻縮弾性回復率が97%、破断強度が3.08cN/dtex、破断伸長率が40%、単糸繊度が2dtexである。
Example 8
Composite crimped fibers used for knitted fabrics are manufactured by combining PET (with an intrinsic viscosity of 0.56 dL/g) and PBT (with an intrinsic viscosity of 1.18 dL/g) at a mass ratio of 35:65 through the FDY process. , extruding from a nozzle with a Y-shaped discharge hole, cooling by annular blowing to form FDY, and then subjecting it to relaxation heat treatment. Among them
The Y-shaped discharge hole has a length ratio of 1.0:1.3:2.5 and a width ratio of 1.5:1.5:1, and has three slits. The angle formed by the center lines of the slits shall be 120°, and for all discharge holes, the center line of the longest slit shall be parallel to the center line of the longest slit of any discharge hole. Make the same number of discharge holes that the center line is orthogonal to;
The boundary surface formed by PET and PBT, which flow into each discharge hole and have approximately the same apparent viscosity, is approximately flat;
The spinning temperature for the FDY process is 277°C, the spinning pack temperature for PET is 280°C, the spinning pack temperature for PBT is 265°C, the cooling temperature is 21°C, the interlacing nozzle pressure is 0.2 MPa, and the first roller speed is 2060 m/min. , the first roller temperature is 80°C, the second roller speed is 3510m/min, the second roller temperature is 142°C, and the winding speed is 3440m/min;
The relaxation heat treatment temperature is 100°C, and the treatment time is 29 minutes.
The composite crimped fiber used for the obtained knitted fabric has a three-dimensional crimp and is composed of PET/PBT parallel composite monofilaments having a plurality of Y-shaped cross sections. If an imaginary line is made perpendicular to the dividing Y, one part corresponds to PET and the other part corresponds to PBT. The composite crimped fiber used in the knitted fabric has a crimp shrinkage rate of 54%, a crimp stability of 82%, a crimp elongation rate of 97%, a crimp elastic recovery rate of 97%, and a breaking strength of 3.08 cN/. dtex, breaking elongation rate is 40%, single yarn fineness is 2dtex.
Claims (5)
同一のY字型吐出孔の3スリットの長さの比率は1.0:1.1~1.4:2.0~2.5であり、幅比率は1.5:1.5:1であり、最短のスリットの長幅比は2.5~3.5:1であり、隣接する2スリットの中心線のなす角は120°であり、各Y字型吐出孔の形状および大きさは同一であり、
前記一定の条件は、いずれかのY字型吐出孔の最長のスリットの中心線を基準線として、その他のY字型吐出孔を2種類に分類し、一つの種類は、最長スリットの中心線が前記基準線と平行であり、別の種類は、最長のスリットの中心線が前記基準線と直交し、前記2種類のY字型吐出孔の数量は同じであり、
PETとPBTとが、各Y字型吐出孔のガイド孔を流動する際の接触面は互いに平行である、編物に用いるY字型複合捲縮繊維の製造方法。 A method for producing a Y-shaped composite crimped fiber used for knitting, based on a fully drawn yarn (FDY) process, using polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) as raw materials, and forming a circular parallel composite. The circular discharge hole on the spinneret for producing fibers is changed to a Y-shape, cooled by annular blowing, and controlled so that the arrangement of the Y-shaped discharge hole on the spinneret meets certain conditions, FDY is produced, and the FDY is subjected to relaxation heat treatment to obtain a Y-shaped composite crimped fiber used for knitting,
The three slits of the same Y-shaped discharge hole have a length ratio of 1.0:1.1-1.4:2.0-2.5 and a width ratio of 1.5:1.5:1. , the length-to-width ratio of the shortest slit is 2.5 to 3.5:1, the angle formed by the center lines of two adjacent slits is 120°, and the shape and size of each Y-shaped discharge hole is are identical and
According to the above-mentioned constant conditions, the center line of the longest slit of any Y-shaped discharge hole is used as a reference line, and the other Y-shaped discharge holes are classified into two types, one type being the center line of the longest slit. is parallel to the reference line, another type has the center line of the longest slit perpendicular to the reference line, and the two types of Y-shaped discharge holes have the same number,
A method for producing a Y-shaped composite crimped fiber used for a knitted fabric, wherein the contact surfaces of PET and PBT when flowing through the guide holes of each Y- shaped discharge hole are parallel to each other.
ことを特徴とする請求項1に記載の編物に用いるY字型複合捲縮繊維の製造方法。 The mass ratio of the PET and the PBT is 30:70 to 70:30,
A method for producing a Y-shaped composite crimped fiber used for a knitted fabric according to claim 1, characterized in that:
ことを特徴とする請求項2に記載の編物に用いるY字型複合捲縮繊維の製造方法。 The intrinsic viscosity of PET is 0.50-0.58 dL/g, the temperature of the spinning beam corresponding to PET is 275-280° C., the intrinsic viscosity of PBT is 1.10-1.21 dL/g, the temperature of the spinning beam corresponding to PBT is 260-265°C;
A method for producing a Y-shaped composite crimped fiber used for a knitted fabric according to claim 2, characterized in that:
ことを特徴とする請求項3に記載の編物に用いるY字型複合捲縮繊維の製造方法。 The parameters of the FDY process are: spinning temperature 274-277° C., cooling temperature 20-25° C., interlace nozzle pressure 0.20-0.30 MPa, first roller speed 2000-2200 m/min, first roller temperature 75 to 85 ° C., the second roller speed is 3300 to 3600 m / min, the second roller temperature is 135 to 145 ° C., the winding speed is 3230 to 3510 m / min,
A method for producing a Y-shaped composite crimped fiber used for a knitted fabric according to claim 3, characterized in that:
ことを特徴とする請求項1に記載の編物に用いるY字型複合捲縮繊維の製造方法。 The method for producing a Y-shaped composite crimped fiber used for knitted fabric according to claim 1, wherein the relaxation heat treatment temperature is 90 to 120°C and the treatment time is 20 to 30 minutes.
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