JP5230125B2 - Porous spinneret and method for producing twisted yarn using the porous spinneret - Google Patents
Porous spinneret and method for producing twisted yarn using the porous spinneret Download PDFInfo
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- JP5230125B2 JP5230125B2 JP2007138682A JP2007138682A JP5230125B2 JP 5230125 B2 JP5230125 B2 JP 5230125B2 JP 2007138682 A JP2007138682 A JP 2007138682A JP 2007138682 A JP2007138682 A JP 2007138682A JP 5230125 B2 JP5230125 B2 JP 5230125B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 238000009987 spinning Methods 0.000 claims description 208
- 239000000835 fiber Substances 0.000 claims description 19
- 239000012209 synthetic fiber Substances 0.000 claims description 16
- 229920002994 synthetic fiber Polymers 0.000 claims description 16
- 230000001788 irregular Effects 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 239000004744 fabric Substances 0.000 description 43
- 239000002759 woven fabric Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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Description
この発明は、例えばマルチフィラメント撚糸の製造に好適な多孔紡糸口金及び該多孔紡糸口金を用いた撚糸の製造方法に関する。 The present invention relates to a porous spinneret suitable for producing, for example, a multifilament twisted yarn and a method for producing a twisted yarn using the porous spinneret.
ポリエステル等の合成繊維からなるマルチフィラメント撚糸は、例えば織物、編物の材料として幅広く使用されている。このようなマルチフィラメント撚糸は、吐出前面に多数個の紡糸孔が分散して設けられてなる紡糸口金の該紡糸孔からポリエステル等の合成樹脂を吐出して溶融紡糸し、得られた多数本の繊維からなる繊維束に撚りを施すことによって製造される。 Multifilament twisted yarns made of synthetic fibers such as polyester are widely used as materials for woven fabrics and knitted fabrics, for example. Such a multifilament twisted yarn is obtained by discharging a synthetic resin such as polyester from a spinning hole of a spinneret in which a large number of spinning holes are dispersed on the front surface of the discharge, and performing melt spinning. It is manufactured by twisting a fiber bundle made of fibers.
ところで、前記紡糸口金の吐出前面における紡糸孔の配列態様としては、吐出前面の中心点を中心とした同心円状の複数の環状を形成するように紡糸孔が配列された構成のものが公知である（特許文献１、２参照）。また、紡糸口金の吐出前面に紡糸孔が格子状に整然と配列された構成のものも知られている（特許文献２参照）。
しかしながら、上記従来構成の紡糸口金の紡糸孔からポリエステル等の合成樹脂を吐出して溶融紡糸し、得られた繊維束に撚りを施すことによって製造したマルチフィラメント撚糸は、これを用いて編物、織物等の布帛を製作すると、手触り感に硬さがあってソフトな風合いが十分に得られ難い上に、伸縮性も十分に得られないという問題があった。更に、撚り形態が安定化し難いので品質面でのばらつきが出やすいという問題もあった。 However, a multifilament twisted yarn manufactured by discharging a synthetic resin such as polyester from the spinning hole of the spinneret having the above-described conventional structure to melt spinning and twisting the obtained fiber bundle is used to knit, fabric When fabrics such as these are produced, there is a problem that the touch feeling is hard and a soft texture cannot be obtained sufficiently, and that stretchability cannot be obtained sufficiently. Furthermore, since the twisted form is difficult to stabilize, there is a problem that variations in quality are likely to occur.
この発明は、かかる技術的背景に鑑みてなされたものであって、ソフトな風合いが十分に得られ、十分な伸縮性を有し、品質のばらつきの少ないマルチフィラメント撚糸の製造を可能ならしめる多孔紡糸口金及び撚糸の製造方法を提供することを目的とする。 The present invention has been made in view of such a technical background, and is capable of producing a multifilament twisted yarn that can sufficiently produce a soft texture, has sufficient stretchability, and has little variation in quality. It aims at providing the manufacturing method of a spinneret and twisted yarn.
前記目的を達成するために、本発明は以下の手段を提供する。 In order to achieve the above object, the present invention provides the following means.
［１］紡糸口金の吐出前面を正面視した状態において該吐出前面の中央部から径方向外方に向かいつつ時計回り方向に曲がって延ばされた円弧等の仮想曲線に沿って複数の異形形状の紡糸孔が互いに間隔をあけて配置されてなる紡糸孔群が前記吐出前面に複数個形成され、これら複数個の紡糸孔群が紡糸口金の周方向に相互に離間して配置されていることを特徴とする多孔紡糸口金。 [1] A plurality of irregular shapes along an imaginary curve such as an arc extending in a clockwise direction from the central portion of the discharge front face in a radially outward direction when the discharge front face of the spinneret is viewed from the front A plurality of spinning hole groups in which a plurality of spinning holes are spaced apart from each other are formed on the discharge front surface, and the plurality of spinning hole groups are arranged apart from each other in the circumferential direction of the spinneret. Porous spinneret characterized by
［２］口金の周方向に隣り合う紡糸孔同士の間隔は、径方向外方側にいくにつれて漸次大きくなるように構成されている前項１に記載の多孔紡糸口金。
[2] The perforated spinneret according to
［３］紡糸口金の吐出前面を正面視した状態において該吐出前面の中央部から径方向外方に向かいつつ反時計回り方向に曲がって延ばされた円弧等の仮想曲線に沿って複数の異形形状の紡糸孔が互いに間隔をあけて配置されてなる紡糸孔群が前記吐出前面に複数個形成され、これら複数個の紡糸孔群が紡糸口金の周方向に相互に離間して配置されていることを特徴とする多孔紡糸口金。 [3] A plurality of irregularities along a virtual curve such as an arc extending in a counterclockwise direction while extending radially outward from the center of the discharge front face when the discharge front face of the spinneret is viewed from the front A plurality of spinning hole groups in which shaped spinning holes are spaced apart from each other are formed on the discharge front surface, and the plurality of spinning hole groups are spaced apart from each other in the circumferential direction of the spinneret. A porous spinneret characterized by that.
［４］口金の周方向に隣り合う紡糸孔同士の間隔は、径方向外方側にいくにつれて漸次大きくなるように構成されている前項３に記載の多孔紡糸口金。 [4] The perforated spinneret according to item 3, wherein the interval between the spin holes adjacent to each other in the circumferential direction of the die is configured to gradually increase toward the radially outer side.
［５］前項１または２に記載の多孔紡糸口金の紡糸孔から異形断面合成繊維を吐出する工程と、前記吐出された複数本の合成繊維からなる繊維束にＳ撚りを施すことによってマルチフィラメント撚糸を得る工程と、を含むことを特徴とする撚糸の製造方法。 [5] A multifilament twisted yarn by discharging S-twist to a fiber bundle composed of a plurality of discharged synthetic fibers, and a step of discharging the modified cross-section synthetic fiber from the spinning hole of the porous spinneret according to 1 or 2 above A method for producing a twisted yarn comprising the steps of:
［６］前項３または４に記載の多孔紡糸口金の紡糸孔から異形断面合成繊維を吐出する工程と、前記吐出された複数本の合成繊維からなる繊維束にＺ撚りを施すことによってマルチフィラメント撚糸を得る工程と、を含むことを特徴とする撚糸の製造方法。
[6] A step of discharging the modified cross-section synthetic fiber from the spinning hole of the porous spinneret according to the
［７］前項５または６に記載の製造方法で製造された撚糸。 [7] A twisted yarn produced by the production method described in 5 or 6 above.
［８］前項７に記載の撚糸を用いて製作された布帛。 [8] A fabric produced using the twisted yarn according to item 7 above.
［１］の発明では、紡糸口金の吐出前面を正面視した状態において該吐出前面の中央部から径方向外方に向かいつつ時計回り方向に曲がって延ばされた円弧等の仮想曲線に沿って複数の紡糸孔が互いに間隔をあけて配置されてなる紡糸孔群が吐出前面に複数個形成され、これら複数個の紡糸孔群が紡糸口金の周方向に相互に離間して配置されているので、この多孔紡糸口金の紡糸孔から吐出した繊維束にＳ撚りを施してマルチフィラメント撚糸を製造し、この撚糸を用いて編物、織物等の布帛を製作すれば、ソフトな風合いと十分な伸縮性を備えると共に、品質のばらつきが少なく外観品質が良好な布帛が得られる。 In the invention of [1], in a state where the discharge front surface of the spinneret is viewed from the front, along a virtual curve such as an arc extending in a clockwise direction from the central portion of the discharge front surface toward the radially outer side. A plurality of spinning hole groups in which a plurality of spinning holes are spaced apart from each other are formed on the discharge front surface, and the plurality of spinning hole groups are arranged apart from each other in the circumferential direction of the spinneret. If a fiber bundle discharged from the spinning hole of this porous spinneret is subjected to S twist to produce a multifilament twisted yarn, and a fabric such as a knitted fabric or a woven fabric is produced using this twisted yarn, a soft texture and sufficient elasticity In addition, there can be obtained a fabric having a good appearance quality with little variation in quality.
［２］の発明では、周方向に隣り合う紡糸孔同士の間隔は、径方向外方側にいくにつれて漸次大きくなるように構成されているから、上記撚糸の撚り形態をより安定化させることができ、これにより品質のばらつきが一層少なくて外観品質がさらに良好な布帛の提供が可能となる。 In the invention of [2], since the interval between the spinning holes adjacent in the circumferential direction is configured to gradually increase toward the radially outer side, the twisted form of the twisted yarn can be further stabilized. Thus, it is possible to provide a fabric with less variation in quality and better appearance quality.
［３］の発明では、紡糸口金の吐出前面を正面視した状態において該吐出前面の中央部から径方向外方に向かいつつ反時計回り方向に曲がって延ばされた円弧等の仮想曲線に沿って複数の紡糸孔が互いに間隔をあけて配置されてなる紡糸孔群が前記吐出前面に複数個形成され、これら複数個の紡糸孔群が紡糸口金の周方向に相互に離間して配置されている配置されているので、この多孔紡糸口金の紡糸孔から吐出した繊維束にＺ撚りを施してマルチフィラメント撚糸を製造し、この撚糸を用いて編物、織物等の布帛を製作すれば、ソフトな風合いと十分な伸縮性を備えると共に、品質のばらつきが少なく外観品質が良好な布帛が得られる。 In the invention of [3], in a state where the discharge front surface of the spinneret is viewed from the front, along a virtual curve such as an arc extending in a counterclockwise direction while extending radially outward from the central portion of the discharge front surface. A plurality of spinning hole groups each having a plurality of spinning holes arranged at intervals are formed on the discharge front surface, and the plurality of spinning hole groups are arranged apart from each other in the circumferential direction of the spinneret. If the fiber bundle discharged from the spinning hole of the perforated spinneret is Z-twisted to produce a multifilament twisted yarn and a fabric such as a knitted fabric or woven fabric is produced using this twisted yarn, A fabric having a texture and sufficient stretchability, and having a good appearance quality with little variation in quality can be obtained.
［４］の発明では、周方向に隣り合う紡糸孔同士の間隔は、径方向外方側にいくにつれて漸次大きくなるように構成されているから、上記撚糸の撚り形態をより安定化させることができ、これにより品質のばらつきが一層少なくて外観品質がさらに良好な布帛の提供が可能となる。 In the invention of [4], since the interval between the spinning holes adjacent in the circumferential direction is configured to gradually increase toward the radially outer side, the twisted form of the twisted yarn can be further stabilized. Thus, it is possible to provide a fabric with less variation in quality and better appearance quality.
［５］［６］の発明に係る製造方法で製造された撚糸を用いれば、ソフトな風合いと十分な伸縮性を備えると共に、品質のばらつきが少なく外観品質が良好な布帛（編物、織物等）の提供が可能となる。 [5] When the twisted yarn produced by the production method according to the invention of [6] is used, a fabric (knitted fabric, woven fabric, etc.) having a soft texture and sufficient stretchability and having a small quality variation and a good appearance quality Can be provided.
［７］の発明の撚糸を用いれば、ソフトな風合いと十分な伸縮性を備えると共に、品質のばらつきが少なく外観品質が良好な布帛（編物、織物等）の提供が可能となる。 If the twisted yarn of the invention of [7] is used, it becomes possible to provide a fabric (knitted fabric, woven fabric, etc.) having a soft texture and sufficient stretchability, and having a small quality variation and good appearance quality.
［８］の発明に係る布帛（編物、織物等）は、ソフトな風合いと十分な伸縮性を備えると共に、品質のばらつきが少なく外観品質も良好なものとなる。 The fabric (knitted fabric, woven fabric, etc.) according to the invention of [8] has a soft texture and sufficient stretchability, and has little quality variation and good appearance quality.
この発明に係る多孔紡糸口金（１）の一実施形態（第１実施形態）を図１に示す。この多孔紡糸口金（１）では、略円形状の吐出前面（１１）を正面視した状態において該吐出前面（１１）の中央部から径方向外方に向かいつつ時計回り方向に曲がって延ばされた略半円弧状の仮想曲線（３０）（図１（ｂ）で点線で示した曲線）に沿って６つの紡糸孔（２）…が互いに間隔をあけて配置されてなる紡糸孔群（３１）が前記吐出前面（１１）に８個（８群）形成されており、これら８個の紡糸孔群（３１Ａ）（３１Ｂ）（３１Ｃ）（３１Ｄ）（３１Ｅ）（３１Ｆ）（３１Ｇ）（３１Ｈ）が紡糸口金の吐出前面（１１）の周方向に相互に離間して配置されている。このような配置態様で紡糸孔（２）が合計で４８個形成されている。 One embodiment (first embodiment) of a porous spinneret (1) according to the present invention is shown in FIG. In this perforated spinneret (1), when the substantially circular discharge front face (11) is viewed from the front, it is bent and extended clockwise from the center of the discharge front face (11) toward the outside in the radial direction. A group of spinning holes (31) in which six spinning holes (2) are arranged at intervals along a substantially semicircular arcuate virtual curve (30) (curved line shown in FIG. 1B). ) Are formed on the discharge front face (11) (eight groups), and the eight spinning hole groups (31A) (31B) (31C) (31D) (31E) (31F) (31G) (31H) ) Are arranged apart from each other in the circumferential direction of the discharge front face (11) of the spinneret. A total of 48 spinning holes (2) are formed in such an arrangement.
また、図１に示すように、第１紡糸孔群（３１Ａ）の最内方側（最も中心位置に近い）の紡糸孔（２）、第２紡糸孔群（３１Ｂ）の最内方側の紡糸孔（２）、第３紡糸孔群（３１Ｃ）の最内方側の紡糸孔（２）、第４紡糸孔群（３１Ｄ）の最内方側の紡糸孔（２）、第５紡糸孔群（３１Ｅ）の最内方側の紡糸孔（２）、第６紡糸孔群（３１Ｆ）の最内方側の紡糸孔（２）、第７紡糸孔群（３１Ｇ）の最内方側の紡糸孔（２）及び第８紡糸孔群（３１Ｈ）の最内方側の紡糸孔（２）は、前記正面視円形の吐出前面（１１）の中心位置を中心とした仮想円（図１（ｂ）で最内方側の一点鎖線で示す円）の円弧線（仮想線）に載るように配置されている。 Further, as shown in FIG. 1, the innermost side (closest to the center position) of the first spinning hole group (31A) (2) and the innermost side of the second spinning hole group (31B). Spinning hole (2), innermost spinning hole (2) of third spinning hole group (31C), innermost spinning hole (2) of fourth spinning hole group (31D), fifth spinning hole The innermost spinning hole (2) of the group (31E), the innermost spinning hole (2) of the sixth spinning hole group (31F), and the innermost spinning hole (31G) of the seventh spinning hole group (31G). The spinning hole (2) on the innermost side of the spinning hole (2) and the eighth spinning hole group (31H) has a virtual circle (FIG. 1 (FIG. 1 In b), it is arranged so as to be placed on an arc line (virtual line) of a circle indicated by a one-dot chain line on the innermost side.
同様に、各紡糸孔群（３１Ａ〜Ｈ）の最内方側から２番目の紡糸孔（２）は、いずれも、前記正面視円形の吐出前面（１１）の中心位置を中心とした仮想円（図１（ｂ）で最内方側から２番目の一点鎖線で示す円）の円弧線（仮想線）に載るように配置されている。また、各紡糸孔群（３１Ａ〜Ｈ）の最内方側から３番目の紡糸孔（２）についても同様の配置態様で配置されている。以下、各紡糸孔群（３１Ａ〜Ｈ）の最内方側から４番目の紡糸孔（２）、各紡糸孔群（３１Ａ〜Ｈ）の最内方側から５番目の紡糸孔（２）、各紡糸孔群（３１Ａ〜Ｈ）の最外方側の紡糸孔（２）についても、それぞれ同様の配置態様で配置されている（図１（ｂ）参照）。 Similarly, the second spinning hole (2) from the innermost side of each spinning hole group (31A to H) is a virtual circle centering on the center position of the discharge front face (11) that is circular in front view. It arrange | positions so that it may mount on the circular arc line (virtual line) of (circle shown with the 2nd dashed-dotted line from the innermost side in FIG.1 (b)). Further, the third spinning hole (2) from the innermost side of each spinning hole group (31A to H) is also arranged in the same manner. Hereinafter, the fourth spinning hole (2) from the innermost side of each spinning hole group (31A to H), the fifth spinning hole (2) from the innermost side of each spinning hole group (31A to H), The spinning hole (2) on the outermost side of each spinning hole group (31A to H) is also arranged in the same manner (see FIG. 1B).
この第１実施形態では、前記仮想曲線（３０）に載らない紡糸孔は形成されていない、即ち前記仮想曲線（３０）に載る紡糸孔（２）のみが形成されている。このように、仮想曲線（３０）に載らない紡糸孔は全く形成されていない構成又は実質的に形成されていない構成を採用するのが好ましい。 In the first embodiment, a spinning hole that does not fall on the virtual curve (30) is not formed, that is, only a spinning hole (2) that falls on the virtual curve (30) is formed. Thus, it is preferable to employ a configuration in which the spinning holes that do not lie on the virtual curve (30) are not formed at all or are substantially not formed.
また、図１から明らかなように、周方向に隣り合う最内方側紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から２番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から３番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から４番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から５番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最外方側紡糸孔（２）同士の間隔の関係が成立するように配置されている。即ち、周方向に隣り合う紡糸孔の間隔は、径方向外方側にいくにつれて漸次（次第に）大きくなるように構成されている。 Further, as apparent from FIG. 1, the interval between the innermost spinning holes (2) adjacent in the circumferential direction <the interval between the second spinning holes (2) from the innermost side adjacent in the circumferential direction < Spacing between the third spinning holes (2) from the innermost side adjacent in the circumferential direction <Spacing between the fourth spinning holes (2) from the innermost side adjacent in the circumferential direction <Fastest adjacent in the circumferential direction They are arranged so that the relationship between the intervals between the fifth spinning holes (2) from the inner side <the interval between the outermost spinning holes (2) adjacent in the circumferential direction is established. In other words, the interval between the spinning holes adjacent to each other in the circumferential direction is configured to gradually increase gradually toward the radially outer side.
前記紡糸孔（２）の吐出前面（１１）における形状（正面視形状）は、図６に示すような略十字状の異形形状である。即ち、前記紡糸孔（２）の吐出前面（１１）の異形形状は、略十字形状の主孔部（２ａ）と、該主孔部（２ａ）の各先端部に形成された膨大孔部（２ｂ）（２ｂ）（２ｂ）（２ｂ）とを備えてなる（図６参照）。 The shape (front view shape) of the spinning hole (2) on the discharge front surface (11) is a substantially cross-shaped irregular shape as shown in FIG. That is, the deformed shape of the discharge front surface (11) of the spinning hole (2) includes a substantially cross-shaped main hole portion (2a) and enormous hole portions formed at the tip portions of the main hole portion (2a) ( 2b) (2b) (2b) (2b) (see FIG. 6).
また、紡糸口金（１）の吐出前面（１１）を正面視した状態において、紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は、少なくとも２種類の異なる方向を向くように配置されている。即ち、図１に示すように、この第１実施形態では、第１紡糸孔群（３１Ａ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向と、第２紡糸孔群（３１Ｂ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は相違する。また、第１紡糸孔群（３１Ａ）、第３紡糸孔群（３１Ｃ）、第５紡糸孔群（３１Ｅ）及び第７紡糸孔群（３１Ｇ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は全て同一である。また、第２紡糸孔群（３１Ｂ）、第４紡糸孔群（３１Ｄ）、第６紡糸孔群（３１Ｆ）及び第８紡糸孔群（３１Ｈ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は全て同一である。 Further, in the state where the discharge front face (11) of the spinneret (1) is viewed from the front, the cross axis direction of the main hole portion (2a) of the spinning hole (2) is arranged to face at least two different directions. Has been. That is, as shown in FIG. 1, in this first embodiment, the cross axis direction of the main hole portion (2a) of the spinning hole (2) constituting the first spinning hole group (31A) and the second spinning hole The axial direction of the cross of the main hole portion (2a) of the spinning hole (2) constituting the group (31B) is different. The main hole portion (2) of the spinning holes (2) constituting the first spinning hole group (31A), the third spinning hole group (31C), the fifth spinning hole group (31E), and the seventh spinning hole group (31G) ( The cross axis directions of 2a) are all the same. The main hole portion (2) of the spinning holes (2) constituting the second spinning hole group (31B), the fourth spinning hole group (31D), the sixth spinning hole group (31F), and the eighth spinning hole group (31H) ( The cross axis directions of 2a) are all the same.
また、図２に示すように、多孔紡糸口金（１）に形成された紡糸孔（２）は、口金（１）の吐出前面（１１）側の領域において吐出後面側から吐出前面側に向けて縮径するように構成されている。 Further, as shown in FIG. 2, the spinning hole (2) formed in the perforated spinneret (1) is located from the discharge rear surface side to the discharge front surface side in the region on the discharge front surface (11) side of the base (1). The diameter is reduced.
次に、上記構成の多孔紡糸口金（１）を用いた撚糸の製造方法について説明する。図３に示すように、前記多孔紡糸口金（１）に合成樹脂を供給することによって多孔紡糸口金（１）の紡糸孔（２）から異形断面合成繊維を吐出し、この吐出された複数本の合成繊維に対して束ねつつＳ撚りを施すことによって、マルチフィラメント撚糸（３５）が得られる。 Next, a method for producing a twisted yarn using the porous spinneret (1) having the above configuration will be described. As shown in FIG. 3, the synthetic resin is supplied to the porous spinneret (1) to discharge the modified cross-section synthetic fiber from the spinning hole (2) of the porous spinneret (1). A multifilament twisted yarn (35) is obtained by applying S twist while bundling synthetic fibers.
前記吐出された合成繊維は、前記多孔紡糸口金（１）における紡糸孔（２）の配置態様と同様の態様で配列されるのであるが、かかる配列態様の繊維束にＳ撚りを施して得られたマルチフィラメント撚糸（３５）を用いて編物、織物等の布帛を製作すれば、ソフトな風合い、十分な伸縮性が得られると共に、品質のばらつきが少なく外観品質が良好な布帛が得られる。 The discharged synthetic fibers are arranged in the same manner as the arrangement of the spinning holes (2) in the porous spinneret (1), and are obtained by applying S twist to the fiber bundle in such an arrangement. When a fabric such as a knitted fabric or a woven fabric is manufactured using the multifilament twisted yarn (35), a soft texture and sufficient stretchability can be obtained, and a fabric with little variation in quality and good appearance quality can be obtained.
また、図１から明らかなように、前記多孔紡糸口金（１）の紡糸孔（２）から吐出された繊維に対して、例えば冷却用の空気流を図面下側から上側に向けて吹き付けることを想定した場合、上下方向において殆どの紡糸孔（２）は位置が重なる（被さる）ことがないから、冷却風が殆ど全ての紡糸繊維に対して同等量照射され得て、この結果、より品質のばらつきの少ない撚糸が得られる。 Further, as is apparent from FIG. 1, for example, a cooling air flow is blown from the lower side to the upper side of the fiber discharged from the spinning hole (2) of the porous spinneret (1). Assuming that most of the spinning holes (2) do not overlap (over) in the vertical direction, the cooling air can be irradiated to almost all the spinning fibers in an equal amount. A twisted yarn with little variation is obtained.
更に、紡糸口金（１）の吐出前面（１１）を正面視した状態において、紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は、少なくとも２種類の異なる方向を向くように配置されているから、撚糸の撚り形態をより安定化させることができ、より一層品質のばらつきの少ない撚糸が得られる。 Further, in the state where the discharge front face (11) of the spinneret (1) is viewed from the front, the cross axis direction of the main hole portion (2a) of the spinning hole (2) is arranged to face at least two different directions. Therefore, the twisted form of the twisted yarn can be further stabilized, and a twisted yarn with less quality variation can be obtained.
この発明に係る多孔紡糸口金（１）の第２実施形態を図４に示す。この多孔紡糸口金（１）では、略円形状の吐出前面（１１）を正面視した状態において該吐出前面（１１）の中央部から径方向外方に向かいつつ反時計回り方向に曲がって延ばされた略半円弧状の仮想曲線（４０）（図４（ｂ）で点線で示した曲線）に沿って６つの紡糸孔（２）…が互いに間隔をあけて配置されてなる紡糸孔群（４１）が前記吐出前面（１１）に８個（８群）形成されており、これら８個の紡糸孔群（４１Ａ）（４１Ｂ）（４１Ｃ）（４１Ｄ）（４１Ｅ）（４１Ｆ）（４１Ｇ）（４１Ｈ）が紡糸口金の吐出前面（１１）の周方向に相互に離間して配置されている。このような配置態様で紡糸孔（２）が合計で４８個形成されている。 A second embodiment of the porous spinneret (1) according to the present invention is shown in FIG. In this perforated spinneret (1), in a state where the substantially circular discharge front face (11) is viewed from the front, the pipe spinneret (1) is bent in the counterclockwise direction while extending radially outward from the central portion of the discharge front face (11). A group of spinning holes in which six spinning holes (2) are arranged at intervals along a substantially semicircular arc-shaped virtual curve (40) (curved line shown in FIG. 4B). 41) are formed on the discharge front surface (11) (eight groups), and these eight spinning hole groups (41A) (41B) (41C) (41D) (41E) (41F) (41G) ( 41H) are arranged apart from each other in the circumferential direction of the discharge front face (11) of the spinneret. A total of 48 spinning holes (2) are formed in such an arrangement.
また、図４に示すように、第１紡糸孔群（４１Ａ）の最内方側（最も中心位置に近い）の紡糸孔（２）、第２紡糸孔群（４１Ｂ）の最内方側の紡糸孔（２）、第３紡糸孔群（４１Ｃ）の最内方側の紡糸孔（２）、第４紡糸孔群（４１Ｄ）の最内方側の紡糸孔（２）、第５紡糸孔群（４１Ｅ）の最内方側の紡糸孔（２）、第６紡糸孔群（４１Ｆ）の最内方側の紡糸孔（２）、第７紡糸孔群（４１Ｇ）の最内方側の紡糸孔（２）及び第８紡糸孔群（４１Ｈ）の最内方側の紡糸孔（２）は、前記正面視円形の吐出前面（１１）の中心位置を中心とした仮想円（図４（ｂ）で最内方側の一点鎖線で示す円）の円弧線（仮想線）に載るように配置されている。 Also, as shown in FIG. 4, the innermost (closest to the center position) spinning hole (2) of the first spinning hole group (41A) and the innermost side of the second spinning hole group (41B). Spinning hole (2), innermost spinning hole (2) of third spinning hole group (41C), innermost spinning hole (2) of fourth spinning hole group (41D), fifth spinning hole The innermost spinning hole (2) of the group (41E), the innermost spinning hole (2) of the sixth spinning hole group (41F), and the innermost spinning hole (41G) of the sixth spinning hole group (41G). The spinning hole (2) on the innermost side of the spinning hole (2) and the eighth spinning hole group (41H) is a virtual circle centered on the center position of the discharge front surface (11) that is circular in front view (FIG. 4 ( In b), it is arranged so as to be placed on an arc line (virtual line) of a circle indicated by a one-dot chain line on the innermost side.
同様に、各紡糸孔群（４１Ａ〜Ｈ）の最内方側から２番目の紡糸孔（２）は、いずれも、前記正面視円形の吐出前面（１１）の中心位置を中心とした仮想円（図４（ｂ）で最内方側から２番目の一点鎖線で示す円）の円弧線（仮想線）に載るように配置されている。また、各紡糸孔群（４１Ａ〜Ｈ）の最内方側から３番目の紡糸孔（２）についても同様の配置態様で配置されている。以下、各紡糸孔群（４１Ａ〜Ｈ）の最内方側から４番目の紡糸孔（２）、各紡糸孔群（４１Ａ〜Ｈ）の最内方側から５番目の紡糸孔（２）、各紡糸孔群（４１Ａ〜Ｈ）の最外方側の紡糸孔（２）についても、それぞれ同様の配置態様で配置されている（図４（ｂ）参照）。 Similarly, the second spinning hole (2) from the innermost side of each spinning hole group (41A to H) is an imaginary circle centered on the center position of the discharge front face (11) that is circular when viewed from the front. It arrange | positions so that it may mount on the circular arc line (virtual line) of (circle shown with the 2nd dashed-dotted line from the innermost side in FIG.4 (b)). Further, the third spinning hole (2) from the innermost side of each spinning hole group (41A to H) is also arranged in the same manner. Hereinafter, the fourth spinning hole (2) from the innermost side of each spinning hole group (41A to H), the fifth spinning hole (2) from the innermost side of each spinning hole group (41A to H), The spinning hole (2) on the outermost side of each spinning hole group (41A to H) is also arranged in the same manner (see FIG. 4B).
この第２実施形態では、前記仮想曲線（４０）に載らない紡糸孔は形成されていない、即ち前記仮想曲線（４０）に載る紡糸孔（２）のみが形成されている。このように、仮想曲線（４０）に載らない紡糸孔は全く形成されていない構成又は実質的に形成されていない構成を採用するのが好ましい。 In the second embodiment, the spinning hole that does not fall on the virtual curve (40) is not formed, that is, only the spinning hole (2) that falls on the virtual curve (40) is formed. Thus, it is preferable to employ a configuration in which the spinning holes that do not fall on the virtual curve (40) are not formed at all or are substantially not formed.
また、図４から明らかなように、周方向に隣り合う最内方側紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から２番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から３番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から４番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最内方側から５番目の紡糸孔（２）同士の間隔＜周方向に隣り合う最外方側紡糸孔（２）同士の間隔の関係が成立するように配置されている。即ち、周方向に隣り合う紡糸孔の間隔は、径方向外方側にいくにつれて漸次（次第に）大きくなるように構成されている。 Further, as apparent from FIG. 4, the interval between the innermost spinning holes (2) adjacent in the circumferential direction <the interval between the second spinning holes (2) from the innermost side adjacent in the circumferential direction < Spacing between the third spinning holes (2) from the innermost side adjacent in the circumferential direction <Spacing between the fourth spinning holes (2) from the innermost side adjacent in the circumferential direction <Fastest adjacent in the circumferential direction They are arranged so that the relationship between the intervals between the fifth spinning holes (2) from the inner side <the interval between the outermost spinning holes (2) adjacent in the circumferential direction is established. In other words, the interval between the spinning holes adjacent to each other in the circumferential direction is configured to gradually increase gradually toward the radially outer side.
前記紡糸孔（２）の吐出前面（１１）における形状（正面視形状）は、図６に示すような略十字状の異形形状である。即ち、前記紡糸孔（２）の吐出前面（１１）の異形形状は、略十字形状の主孔部（２ａ）と、該主孔部（２ａ）の各先端部に形成された膨大孔部（２ｂ）（２ｂ）（２ｂ）（２ｂ）とを備えてなる（図６参照）。 The shape (front view shape) of the spinning hole (2) on the discharge front surface (11) is a substantially cross-shaped irregular shape as shown in FIG. That is, the deformed shape of the discharge front surface (11) of the spinning hole (2) includes a substantially cross-shaped main hole portion (2a) and enormous hole portions formed at the tip portions of the main hole portion (2a) ( 2b) (2b) (2b) (2b) (see FIG. 6).
また、紡糸口金（１）の吐出前面（１１）を正面視した状態において、紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は、少なくとも２種類の異なる方向を向くように配置されている。即ち、図４に示すように、この第２実施形態では、第１紡糸孔群（４１Ａ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向と、第２紡糸孔群（４１Ｂ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は相違する。また、第１紡糸孔群（４１Ａ）、第３紡糸孔群（４１Ｃ）、第５紡糸孔群（４１Ｅ）及び第７紡糸孔群（４１Ｇ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は全て同一である。また、第２紡糸孔群（４１Ｂ）、第４紡糸孔群（４１Ｄ）、第６紡糸孔群（４１Ｆ）及び第８紡糸孔群（４１Ｈ）を構成する紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は全て同一である。 Further, in the state where the discharge front face (11) of the spinneret (1) is viewed from the front, the cross axis direction of the main hole portion (2a) of the spinning hole (2) is arranged to face at least two different directions. Has been. That is, as shown in FIG. 4, in the second embodiment, the cross axis direction of the main hole portion (2a) of the spinning hole (2) constituting the first spinning hole group (41A) and the second spinning hole The cross axis directions of the main hole portions (2a) of the spinning holes (2) constituting the group (41B) are different. The main hole portion (2) of the spinning holes (2) constituting the first spinning hole group (41A), the third spinning hole group (41C), the fifth spinning hole group (41E), and the seventh spinning hole group (41G) ( The cross axis directions of 2a) are all the same. The main hole portion (2) of the spinning holes (2) constituting the second spinning hole group (41B), the fourth spinning hole group (41D), the sixth spinning hole group (41F), and the eighth spinning hole group (41H) ( The cross axis directions of 2a) are all the same.
また、図２に示すように、多孔紡糸口金（１）に形成された紡糸孔（２）は、口金（１）の吐出前面（１１）側の領域において吐出後面側から吐出前面側に向けて縮径するように構成されている。 Further, as shown in FIG. 2, the spinning hole (2) formed in the perforated spinneret (1) is located from the discharge rear surface side to the discharge front surface side in the region on the discharge front surface (11) side of the base (1). The diameter is reduced.
次に、上記構成の多孔紡糸口金（１）を用いた撚糸の製造方法について説明する。図５に示すように、前記多孔紡糸口金（１）に合成樹脂を供給することによって多孔紡糸口金（１）の紡糸孔（２）から異形断面合成繊維を吐出し、この吐出された複数本の合成繊維に対して束ねつつＺ撚りを施すことによって、マルチフィラメント撚糸（４５）が得られる。 Next, a method for producing a twisted yarn using the porous spinneret (1) having the above configuration will be described. As shown in FIG. 5, the synthetic resin is supplied to the porous spinneret (1) to discharge the modified cross-section synthetic fiber from the spinning hole (2) of the porous spinneret (1). A multifilament twisted yarn (45) is obtained by Z-twisting the synthetic fiber while being bundled.
前記吐出された合成繊維は、前記多孔紡糸口金（１）における紡糸孔（２）の配置態様と同様の態様で配列されるので、かかる配列態様の繊維束にＺ撚りを施して得られたマルチフィラメント撚糸（４５）を用いて編物、織物等の布帛を製作すれば、ソフトな風合い、十分な伸縮性が得られると共に、品質のばらつきが少なく外観品質が良好な布帛が得られる。 Since the discharged synthetic fibers are arranged in the same manner as the arrangement mode of the spinning holes (2) in the porous spinneret (1), the multi-fiber obtained by Z-twisting the fiber bundles in the arrangement mode is arranged. When a fabric such as a knitted fabric or a woven fabric is manufactured using the filament twisted yarn (45), a soft texture and sufficient stretchability can be obtained, and a fabric with less quality variation and good appearance quality can be obtained.
また、図４から明らかなように、前記多孔紡糸口金（１）の紡糸孔（２）から吐出された繊維に対して、例えば冷却用の空気流を図面下側から上側に向けて吹き付けることを想定した場合、上下方向において殆どの紡糸孔（２）は位置が重なる（被さる）ことがないから、冷却風が殆ど全ての紡糸繊維に対して同等量照射され得て、この結果、より品質のばらつきの少ない撚糸が得られる。 As is clear from FIG. 4, for example, an air flow for cooling is blown from the lower side to the upper side of the fiber discharged from the spinning hole (2) of the porous spinneret (1). Assuming that most of the spinning holes (2) do not overlap (over) in the vertical direction, the cooling air can be irradiated to almost all the spinning fibers in an equal amount. A twisted yarn with little variation is obtained.
更に、紡糸口金（１）の吐出前面（１１）を正面視した状態において、紡糸孔（２）の主孔部（２ａ）の十字の軸線方向は、少なくとも２種類の異なる方向を向くように配置されているから、撚糸の撚り形態をより安定化させることができ、より一層品質のばらつきの少ない撚糸が得られる。 Further, in the state where the discharge front face (11) of the spinneret (1) is viewed from the front, the cross axis direction of the main hole portion (2a) of the spinning hole (2) is arranged to face at least two different directions. Therefore, the twisted form of the twisted yarn can be further stabilized, and a twisted yarn with less quality variation can be obtained.
上記撚糸の製造方法において、多孔紡糸口金（１）に供給する合成樹脂（即ち合成繊維の原料）としては、特に限定されるものではないが、例えばポリエステル樹脂等が挙げられる。 In the method for producing a twisted yarn, the synthetic resin (that is, the raw material of the synthetic fiber) supplied to the porous spinneret (1) is not particularly limited, and examples thereof include a polyester resin.
なお、上記実施形態では、前記紡糸孔（２）の吐出前面（１１）における形状は、図６に示すような略十字状の異形形状であるが、特にこのような構成に限定されるものではなく、異形形状（非円形）であればどのような形状であっても良く、例えば三角形状、四角形状等の多角形形状を採用することもできる。 In the above embodiment, the shape of the spinning hole (2) on the discharge front surface (11) is a substantially cross-shaped irregular shape as shown in FIG. 6, but is not particularly limited to such a configuration. Alternatively, any shape may be used as long as it is an irregular shape (non-circular shape). For example, a polygonal shape such as a triangular shape or a quadrangular shape may be employed.
また、上記第１実施形態では、前記仮想曲線（３０）は略半円弧状に形成されているが、特にこのような構成に限定されるものではなく、前記吐出前面（１１）の中央部から径方向外方に向かいつつ時計回り方向に曲がって延ばされた曲線であればどのようなものでも良く、例えば吐出前面（１１）の中央部から径方向外方に向かいつつ時計回り方向に曲がって延ばされた放物線等でも良い。 Moreover, in the said 1st Embodiment, although the said virtual curve (30) is formed in the substantially semicircular arc shape, it is not specifically limited to such a structure, From the center part of the said discharge front surface (11). Any curve may be used as long as the curve extends in the clockwise direction while facing outward in the radial direction. For example, the curve curves in the clockwise direction while going outward in the radial direction from the central portion of the discharge front surface (11). It may be a parabola extended.
また、上記第２実施形態では、前記仮想曲線（４０）は略半円弧状に形成されているが、特にこのような構成に限定されるものではなく、前記吐出前面（１１）の中央部から径方向外方に向かいつつ反時計回り方向に曲がって延ばされた曲線であればどのようなものでも良く、例えば吐出前面（１１）の中央部から径方向外方に向かいつつ反時計回り方向に曲がって延ばされた放物線等でも良い。 Moreover, in the said 2nd Embodiment, although the said virtual curve (40) is formed in the substantially semicircular arc shape, it is not specifically limited to such a structure, From the center part of the said discharge front surface (11). Any curve may be used as long as it is curved outwardly extending in the counterclockwise direction while facing outward in the radial direction. For example, the counterclockwise direction is directed radially outward from the center of the discharge front surface (11). It may be a parabola or the like that is bent and bent.
また、上記実施形態では、１つの紡糸孔群（３１）（４１）は、６個の紡糸孔（２）から構成されているが、特にこのような構成に限定されるものではなく、２以上の複数個の紡糸孔からなる構成であれば良い。中でも、１つの紡糸孔群（３１）（４１）は、３個以上の紡糸孔（２）からなる構成であるのが好ましく、特に好ましいのは４〜２０個の紡糸孔（２）からなる構成である。また、各紡糸孔群（３１）（４１）における紡糸孔（２）の設置数は、上記実施形態のように同数（例えば６個）であっても良いし、或いは異なる数であっても良い。 Moreover, in the said embodiment, although one spinning hole group (31) (41) is comprised from six spinning holes (2), it is not specifically limited to such a structure, Two or more Any configuration having a plurality of spinning holes may be used. Among them, one spinning hole group (31) (41) preferably has a configuration consisting of three or more spinning holes (2), and particularly preferably a configuration consisting of 4 to 20 spinning holes (2). It is. The number of spinning holes (2) in each spinning hole group (31) (41) may be the same number (for example, six) as in the above embodiment, or may be a different number. .
また、上記実施形態では、紡糸孔群（３１）（４１）の設置数は８個（８群）であるが、特にこのような設置数に限定されるものではなく、２以上の複数個（複数群）であれば良い。中でも、紡糸孔群（３１）（４１）の設置数は４〜１６個（群）であるのが、上述した諸効果が十分に得られる点で、好ましい。 Moreover, in the said embodiment, although the number of installation of the spinning hole group (31) (41) is 8 (8 groups), it is not limited to such an installation number in particular, 2 or more ( (Multiple groups). Especially, it is preferable that the number of installed spinning hole groups (31) and (41) is 4 to 16 (groups) from the viewpoint that the above-described effects can be sufficiently obtained.
この発明に係る多孔紡糸口金（１）及び撚糸の製造方法は、上記実施形態のものに特に限定されるものではなく、請求の範囲内であれば、その精神を逸脱するものでない限りいかなる設計的変更をも許容するものである。 The method for producing the porous spinneret (1) and the twisted yarn according to the present invention is not particularly limited to that of the above-described embodiment, and any design can be used as long as it does not depart from the spirit of the claims. Changes are also allowed.
次に、この発明の具体的実施例について説明するが、本発明はこれら実施例のものに特に限定されるものではない。 Next, specific examples of the present invention will be described, but the present invention is not particularly limited to these examples.
＜実施例１＞
前項で説明した図１の多孔紡糸口金（１）にポリエステル樹脂を供給することによって紡糸孔（２）から異形断面繊維を吐出し、この吐出された４８本の異形断面繊維に対してＤＴＹ加工（Ｓ撚り）を施すことによって、５５デシテックス（５０デニール）のマルチフィラメント撚糸（３５）を製造した（図３参照）。この撚糸（３５）を用いてメッシュ編みすることによって編地を得た。
<Example 1>
By supplying the polyester resin to the porous spinneret (1) of FIG. 1 described in the previous section, the irregular cross-section fibers are discharged from the spinning hole (2), and DTY processing is performed on the discharged 48 irregular cross-section fibers ( By applying (S twist), a 55 dtex (50 denier) multifilament twisted yarn (35) was produced (see FIG. 3). A knitted fabric was obtained by mesh knitting using this twisted yarn (35).
なお、多孔紡糸口金（１）の厚さ（Ｌ）は２３ｍｍに設定し、吐出前面（１１）の直径（Ｄ）は８３ｍｍに設定した（図２参照）。また、紡糸孔（２）の大きさは、図６において、Ｍ＝０．３ｍｍ、Ｎ＝０．０８ｍｍ、Ｓ＝０．０８ｍｍ、Ｔ＝０．８ｍｍに設定した。また、最内方側の仮想円の直径は３２．１２ｍｍ、最内方側から２番目の仮想円の直径は４８．８５ｍｍ、最内方側から３番目の仮想円の直径は６０．２９ｍｍ、最内方側から４番目の仮想円の直径は６８．８８ｍｍ、最内方側から５番目の仮想円の直径は７４．２０ｍｍ、最外方の仮想円（即ち最内方側から６番目の仮想円）の直径は７６．００ｍｍとした（図１（ｂ）参照）。また、略半円弧状の仮想曲線（３０）の半径は１９．００ｍｍに設定した（図１（ｂ）参照）。 The thickness (L) of the porous spinneret (1) was set to 23 mm, and the diameter (D) of the discharge front surface (11) was set to 83 mm (see FIG. 2). Moreover, the size of the spinning hole (2) was set to M = 0.3 mm, N = 0.08 mm, S = 0.08 mm, and T = 0.8 mm in FIG. Further, the diameter of the innermost virtual circle is 32.12 mm, the diameter of the second virtual circle from the innermost side is 48.85 mm, the diameter of the third virtual circle from the innermost side is 60.29 mm, The diameter of the fourth virtual circle from the innermost side is 68.88 mm, the diameter of the fifth virtual circle from the innermost side is 74.20 mm, and the outermost virtual circle (that is, the sixth virtual circle from the innermost side) The diameter of the (imaginary circle) was 76.00 mm (see FIG. 1B). Further, the radius of the substantially semicircular arc-shaped virtual curve (30) was set to 19.00 mm (see FIG. 1B).
＜実施例２＞
紡糸孔（２）から異形断面繊維を吐出する時の吐出圧を調整することによって撚糸（３５）の太さが８２．５デシテックス（７５デニール）になるようにした以外は、実施例１と同様にして編地を得た。
<Example 2>
Example 1 except that the thickness of the twisted yarn (35) is adjusted to 82.5 dtex (75 denier) by adjusting the discharge pressure when discharging the irregular cross-section fiber from the spinning hole (2). I got a knitted fabric.
＜実施例３＞
紡糸孔（２）の吐出前面（１１）の形状を全て正三角形に設計した以外は、実施例２と同様にして編地を得た。なお、紡糸孔（２）の配置態様も実施例２と同様とした。
<Example 3>
A knitted fabric was obtained in the same manner as in Example 2 except that the shape of the discharge front surface (11) of the spinning hole (2) was all designed to be an equilateral triangle. The arrangement mode of the spinning holes (2) was also the same as in Example 2.
＜実施例４＞
第２紡糸孔群（３１Ｂ）、第４紡糸孔群（３１Ｄ）、第６紡糸孔群（３１Ｆ）及び第８紡糸孔群（３１Ｈ）を構成する紡糸孔（２）の吐出前面（１１）の形状を略十字形に代えて正三角形に設計した以外は、実施例２と同様にして編地を得た。なお、紡糸孔（２）の配置態様も実施例２と同様とした。
<Example 4>
The discharge front surface (11) of the spinning holes (2) constituting the second spinning hole group (31B), the fourth spinning hole group (31D), the sixth spinning hole group (31F), and the eighth spinning hole group (31H). A knitted fabric was obtained in the same manner as in Example 2 except that the shape was changed to a substantially triangular shape and a regular triangle was designed. The arrangement mode of the spinning holes (2) was also the same as in Example 2.
＜比較例１＞
多孔紡糸口金（９１）における紡糸孔の配置態様を図７（ａ）に示す同心円状（紡糸孔の数：４８個）に設定した以外は、実施例２と同様にして編地を得た。なお、紡糸孔（９２）の大きさ及び形状は実施例２と同様とした。
<Comparative Example 1>
A knitted fabric was obtained in the same manner as in Example 2 except that the arrangement of the spinning holes in the porous spinneret (91) was set to be concentric (the number of spinning holes: 48) shown in FIG. The size and shape of the spinning hole (92) were the same as in Example 2.
＜比較例２＞
多孔紡糸口金（９１）における紡糸孔の配置態様を図７（ｂ）に示す格子状（紡糸孔の数：４８個）に設定した以外は、実施例２と同様にして編地を得た。なお、紡糸孔（９２）の大きさ及び形状は実施例２と同様とした。
<Comparative example 2>
A knitted fabric was obtained in the same manner as in Example 2 except that the arrangement of the spinning holes in the porous spinneret (91) was set to the lattice shape (number of spinning holes: 48) shown in FIG. The size and shape of the spinning hole (92) were the same as in Example 2.
上記のようにして得られた各編地について下記評価法により評価を行った。 Each knitted fabric obtained as described above was evaluated by the following evaluation method.
＜風合い評価法＞
編地を手で触りその触感を調べ、下記判定基準に基づいて評価した。
「◎」…触感が非常に柔らかくて非常にソフトな風合いを呈する
「○」…触感が柔らかくて風合いが良好である
「×」…触感に硬さ感が感じられて風合いが良好でない。
<Texture evaluation method>
The knitted fabric was touched by hand to check its tactile sensation and evaluated based on the following criteria.
“◎”: Tactile feeling is very soft and has a very soft texture “O”: Tactile feeling is soft and the texture is good “×”: Tactile feeling is felt and the texture is not good.
＜伸縮性評価法＞
下記編地の伸長率測定法に基づいて各編地の伸長率を測定し、下記判定基準に基づいて伸縮性を評価した。
（編地の伸長率測定法）
ＪＩＳ Ｌ１０１８の定荷重法に準拠して（荷重４９０．４ｃＮ）編地のよこ方向（コース方向）における伸長率を測定した。
「◎」…編地の伸び率が４０％以上であるもの
「○」…編地の伸び率が３０％以上４０％未満であるもの
「×」…編地の伸び率が３０％未満であるもの。
<Elasticity evaluation method>
The stretch rate of each knitted fabric was measured based on the following stretch rate measurement method of the knitted fabric, and the stretchability was evaluated based on the following criteria.
(Measurement method of stretch rate of knitted fabric)
Based on the constant load method of JIS L1018 (load 490.4 cN), the stretch rate in the weft direction (course direction) of the knitted fabric was measured.
"◎" ... Elongation rate of the knitted fabric is 40% or more "O" ... Elongation rate of the knitted fabric is 30% or more and less than 40% "X" ... Elongation rate of the knitted fabric is less than 30% thing.
＜外観品質評価法＞
編地における横段（糸の断面形状のばらつき等による乱反射により細筋状に視認される表面の筋）の有無を目視により調べ、下記判定基準に基づいて評価した。
「○」…横段が認められず編地の表面外観が非常に良好なもの
「△」…横段が少し認められたもの
「×」…横段が顕著に認められたもの。
<Appearance quality evaluation method>
The knitted fabric was visually examined for the presence or absence of lateral rows (surface streaks that were visually recognized as fine streaks due to irregular reflection due to variations in the cross-sectional shape of the yarn) and evaluated based on the following criteria.
“◯”: No row is recognized and the surface appearance of the knitted fabric is very good “Δ”: A little row is recognized “×”: A row is remarkably recognized.
表１から明らかなように、この発明の実施例１〜４の編地は、ソフトな風合いを有し、伸縮性に優れていると共に、外観品質も非常に良好であった。 As apparent from Table 1, the knitted fabrics of Examples 1 to 4 of the present invention had a soft texture, excellent stretchability, and very good appearance quality.
これに対し、比較例１の編地は、伸縮性が不十分であったし、外観品質も不十分であった。 On the other hand, the knitted fabric of Comparative Example 1 was insufficient in stretchability and the appearance quality was also insufficient.
１…多孔紡糸口金
２…紡糸孔
１１…吐出前面
３０…仮想曲線
３１Ａ…第１紡糸孔群
３１Ｂ…第２紡糸孔群
３１Ｃ…第３紡糸孔群
３１Ｄ…第４紡糸孔群
３１Ｅ…第５紡糸孔群
３１Ｆ…第６紡糸孔群
３１Ｇ…第７紡糸孔群
３１Ｈ…第８紡糸孔群
３５…撚糸（Ｓ撚り）
４０…仮想曲線
４１Ａ…第１紡糸孔群
４１Ｂ…第２紡糸孔群
４１Ｃ…第３紡糸孔群
４１Ｄ…第４紡糸孔群
４１Ｅ…第５紡糸孔群
４１Ｆ…第６紡糸孔群
４１Ｇ…第７紡糸孔群
４１Ｈ…第８紡糸孔群
４５…撚糸（Ｚ撚り）
DESCRIPTION OF
40 ...
Claims (2)
前記吐出された複数本の合成繊維からなる繊維束にＳ撚りを施すことによってマルチフィラメント撚糸を得る工程と、
を含むことを特徴とする撚糸の製造方法。 A plurality of irregularly shaped spinning holes along an imaginary curve such as an arc extending in a clockwise direction from the center of the discharge front face toward the radially outer side when the discharge front face of the spinneret is viewed from the front Are formed on the discharge front surface, and the plurality of spinning hole groups are arranged apart from each other in the circumferential direction of the spinneret, and are arranged in the circumferential direction of the nozzle. The step of discharging the modified cross-section synthetic fiber from the spinning hole of the porous spinneret that is configured so that the interval between the adjacent spinning holes gradually increases toward the radially outer side ;
A step of obtaining a multifilament twisted yarn by applying S twist to the discharged fiber bundle composed of a plurality of synthetic fibers;
The manufacturing method of the twisted yarn characterized by including.
前記吐出された複数本の合成繊維からなる繊維束にＺ撚りを施すことによってマルチフィラメント撚糸を得る工程と、
を含むことを特徴とする撚糸の製造方法。
Spinning with a plurality of irregular shapes along a virtual curve such as an arc extending in a counterclockwise direction while extending radially outward from the center of the discharge front face when the discharge front face of the spinneret is viewed from the front A plurality of spinning hole groups in which holes are spaced apart from each other are formed on the discharge front surface, and the plurality of spinning hole groups are arranged spaced apart from each other in the circumferential direction of the spinneret. The step of discharging the modified cross-section synthetic fiber from the spinning hole of the porous spinneret configured so that the interval between the spinning holes adjacent to each other gradually increases toward the radially outer side ,
A step of obtaining a multifilament twisted yarn by applying Z twist to a fiber bundle composed of a plurality of discharged synthetic fibers;
The manufacturing method of the twisted yarn characterized by including.
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| JP2007138682A JP5230125B2 (en) | 2007-05-25 | 2007-05-25 | Porous spinneret and method for producing twisted yarn using the porous spinneret |
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| JPS5436691B2 (en) * | 1974-05-13 | 1979-11-10 | ||
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| JPH04300319A (en) * | 1991-03-25 | 1992-10-23 | Asahi Chem Ind Co Ltd | Production of polyester fiber and spinneret |
| JPH1112883A (en) * | 1997-06-26 | 1999-01-19 | Unitika Ltd | Production of stretchable woven or knitted fabric |
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