JPH08158143A - Production of conjugate fiber and spinneret for conjugate spinning - Google Patents

Abstract

PURPOSE: To obtain conjugate fiber whose cross-section is completely covered with a sheath component so as not to project a core component onto the fiber surface. CONSTITUTION: This spinneret has three spinneret plates, a 1st to a 3rd spinneret plates 3, 4, 5. A core component is divided into three at the 1st spinneret plate 3 and fed to the 2nd spinneret plate 4; a sheath component is divided into two lines, and from the one line, the sheath component is fed to a slit 23 of the 2nd spinneret plate 4, where a side-by-side flow is formed and then delivered, via a 2nd delivery hole 27, from the slit 28 of the 3rd spinneret plate 5. The sheath component from the different line is introduced via a dispensing hole 22 into the slit 28 so as to enclose the side-by-side flow, and delivered from a delivery hole 32 in such a manner as to cover the side-by-side flow therewith as sheath.

Description

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

【０００１】[0001]

【産業上の利用分野】本発明は、複合繊維の製造方法お
よび複合紡糸用口金に関し、特に２種以上の紡糸成分よ
り複合繊維を製造するための紡糸口金であって、該複合
繊維の単繊維断面において一方の成分が他方の成分を複
数個に分割する形態を有する、いわゆる分割型複合繊維
において一方成分が繊維表面に突き出すことのないよう
他方成分によって完全に覆われた断面を有する複合繊維
を製造する方法およびそのための複合紡糸用口金に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a composite fiber and a spinneret for composite spinning, and more particularly to a spinneret for producing a composite fiber from two or more kinds of spinning components. In a so-called splittable conjugate fiber, one component has a form in which the other component is divided into a plurality of parts in the cross section, and a composite fiber having a cross section completely covered by the other component so that one component does not protrude to the fiber surface. The present invention relates to a manufacturing method and a spinneret for composite spinning therefor.

【０００２】[0002]

【従来の技術】２成分以上の複合繊維を製造するための
複合紡糸用口金において、一方の成分が他方の成分を複
数個に分割する形態を有する口金については従来より多
数のものが提案されている。2. Description of the Related Art In a composite spinneret for producing a composite fiber having two or more components, a large number of spinnerets having one component in which the other component is divided into a plurality of components have been proposed. There is.

【０００３】例えば、特公昭４７−２４８５号公報には
第１液（芯成分）を導入する開口部およびこれに連なる
吐出孔を有する分配板の下部に、該第１液と第２液を複
合する開口部およびこれを吐出する吐出孔を有する口金
板を配置し、該分配板と口金板の間には第２液を誘導す
る帯域を形成することを特徴とする複合紡糸用口金が提
案されている。For example, in Japanese Patent Publication No. 47-2485, the first liquid and the second liquid are combined in the lower portion of a distribution plate having an opening for introducing the first liquid (core component) and a discharge hole connected to the opening. A spinneret for composite spinning is proposed in which a spinneret plate having an opening for discharging and a discharge hole for discharging the spinneret is disposed, and a zone for guiding the second liquid is formed between the distributor plate and the spinneret plate. .

【０００４】この方法によれば、確かに一方の成分が他
方の成分を複数個に分割する形態の断面を得ることがで
きるものの、両成分が繊維表面に現れてしまう形態をも
つ。従って、一方の成分が他方の成分に完全に覆われ、
繊維表面に現れないことを要求特性とする複合繊維を製
造する場合には使用できない。According to this method, it is possible to obtain a cross section in which one component divides the other component into a plurality, but both components appear on the fiber surface. Therefore, one component is completely covered by the other,
It cannot be used for producing a composite fiber whose required characteristic is not to appear on the fiber surface.

【０００５】[0005]

【発明が解決しようとする課題】本発明は、上記の従来
技術の問題点を解決するためになされたもので、その目
的は２種以上の紡糸成分より複合繊維を製造する方法お
よびその紡糸口金であって、特に複合繊維の単繊維断面
において一方の成分が他方の成分を複数個に分割する形
態を有するいわゆる分割型複合繊維において、一方の成
分が繊維表面に突き出すことのないよう他方成分によっ
て完全に覆われた断面を有する複合繊維を製造する方法
およびその複合紡糸用口金を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and its object is a method for producing a composite fiber from two or more kinds of spinning components and a spinneret therefor. In particular, in a so-called splittable conjugate fiber having a form in which one component divides the other component into a plurality in the single fiber cross section of the conjugate fiber, one component is prevented from protruding to the fiber surface by the other component. It is an object of the present invention to provide a method for producing a composite fiber having a completely covered cross section and a composite spinneret for the same.

【０００６】[0006]

【課題を解決するための手段】本発明は、２種以上の紡
糸成分より複合繊維を製造するに際し、少なくとも３個
の積層した口金板を使用し、先ず複数の吐出孔を設けた
導入口を有する第１口金板に一方の成分を供給して任意
の分割数にて第２口金板に形成した第１狭隘口に吐出す
るとともに、他方の成分は第１口金板に設けた少なくと
も２つの流路を介して一部を一方の流路から前記第１狭
隘口に該狭隘口の周囲から導入することによりサイドバ
イサイド流を形成して第２口金板の吐出孔に供給し、残
部は他方の流路から第２口金板に設けた分配孔を介して
第３口金板の第２狭隘口にその周囲から導入して前記吐
出孔より吐出されたサイドバイサイド流を被覆する外皮
を形成し、形成された芯−外皮流を第２狭隘口の内部に
設けた吐出孔に導入して該吐出孔から吐出することを特
徴とする複合繊維の製造方法である。According to the present invention, when a composite fiber is produced from two or more kinds of spinning components, at least three laminated die plates are used, and an introduction port having a plurality of ejection holes is first provided. While supplying one component to the first die plate having the same and discharging it at an arbitrary number of divisions to the first narrow mouth formed on the second die plate, the other component is at least two streams provided on the first die plate. A part is introduced from one flow path into the first narrow mouth through the periphery of the narrow mouth to form a side-by-side flow and supply the side-by-side flow to the discharge hole of the second mouth plate, and the rest is the other flow. It is formed by forming a skin that is introduced from the periphery of the second narrow plate opening of the third mouth plate into the second narrow mouth through the distribution hole provided in the second mouth plate and covers the side-by-side flow discharged from the discharge hole. Guide the core-cover flow to the discharge hole provided inside the second narrow mouth. A method of manufacturing a composite fiber characterized by discharging from said discharge Deana then.

【０００７】また、本発明は、２種以上の紡糸成分より
複合繊維を製造するための紡糸口金であって、少なくと
も第１、第２、第３の３つの口金板を含んで構成され、
第１口金板は一方の成分を任意の分割数にて吐出する複
数の第１吐出孔を有する導入口と、他方の成分を少なく
とも２つに分ける第１流路を設けており、第２口金板は
前記第１流路の１つと連通する環状の第１均圧溝および
該均圧溝内に第１吐出孔と対面して狭隘な通路を形成す
る第１狭隘口並びにその中心部に狭隘部よりさらに下流
の第３口金板へ吐出する第２吐出孔と、他の第１流路と
連絡し下流に導く第２流路を有しており、第３口金板は
第２吐出孔の下方位置に該吐出孔に対応する第３吐出孔
を有する第２狭隘口、該狭隘口を取り囲み第２流路に連
通する第２均圧溝を設けたことを特徴とする複合紡糸用
口金である。Further, the present invention is a spinneret for producing a composite fiber from two or more kinds of spinning components, the spinneret including at least three first, second and third spinneret plates,
The first die plate is provided with an inlet having a plurality of first ejection holes for ejecting one component in an arbitrary number of divisions, and a first flow path for dividing the other component into at least two. The plate has an annular first pressure-equalizing groove that communicates with one of the first flow paths, a first narrow opening that forms a narrow passage in the pressure-equalizing groove to face the first discharge hole, and a narrow portion at the center thereof. Has a second discharge hole that discharges to a third mouth plate further downstream than the above portion, and a second flow path that communicates with another first flow path and guides it downstream, and the third mouth plate is a second discharge hole. A composite spinning die comprising a second narrow opening having a third discharge hole corresponding to the discharge hole at a lower position, and a second pressure equalizing groove surrounding the narrow opening and communicating with a second flow path. is there.

【０００８】さらに、本発明は、上から順次上蓋、分配
板、第１口金板、第２口金板、第３口金板を積層した構
成からなり、上蓋は中心部に芯成分液を供給する第１供
給孔、その周辺に鞘成分液の供給を行う第２供給孔を有
し、分配板は第１供給孔から供給された芯成分を周辺部
に設けた複数の分配孔に配分する分配溝を有し、かつ第
１供給孔に連絡し中心部下面に開口する孔を設け、第１
口金板は分配孔に対応して芯成分を任意の分割数にて吐
出する第１吐出孔と、第２供給孔に連通し鞘成分を中央
部とその周辺部の少なくとも２つに分ける第１流路を有
し、第２口金板は第１吐出孔と対応する位置に狭隘通路
を形成し、その中心部に第２吐出孔を設けた第１狭隘
口、該狭隘口の周囲により深く刻設した周辺部の第１流
路に連通する第１均圧溝と、中央部の第１流路と連通し
鞘成分液を分配する第２流路を設け、第３口金板は第２
吐出孔に対応する位置に狭隘路を形成しその中心部に第
３吐出孔を設けた第２狭隘口を有し、かつその周囲によ
り深く刻設しかつ第２流路に連通する第２均圧溝を設け
たことを特徴とする複合紡糸用口金である。Further, according to the present invention, an upper lid, a distribution plate, a first mouth plate, a second mouth plate and a third mouth plate are laminated in this order from the top, and the upper lid supplies the core component liquid to the central portion. One distribution hole has a second supply hole for supplying the sheath component liquid around the one supply hole, and the distribution plate distributes the core component supplied from the first supply hole to a plurality of distribution holes provided in the peripheral portion. And has a hole which is connected to the first supply hole and opens on the lower surface of the central portion.
The mouth plate has a first discharge hole that discharges the core component in an arbitrary number of divisions corresponding to the distribution hole, and a first discharge hole that communicates with the second supply hole and divides the sheath component into at least two parts, a central part and a peripheral part thereof. The second mouth plate has a flow passage, a narrow passage is formed at a position corresponding to the first discharge hole, and the second discharge hole is provided at the center of the first narrow mouth, and the periphery of the narrow mouth is deeper. A first pressure-equalizing groove that communicates with the first flow passage in the peripheral portion provided and a second flow passage that communicates with the first flow passage in the central portion and distributes the sheath component liquid are provided, and the third mouth plate is the second.
A second narrow opening having a narrow passage formed at a position corresponding to the discharge hole and having a third discharge hole provided at the center thereof, and further engraved deeper around the second narrow opening and communicating with the second flow passage. A spinneret for composite spinning, characterized in that a pressure groove is provided.

【０００９】[0009]

【作用】本発明は、上記のように構成されているため、
第１口金板では、芯成分が第１吐出孔を通して任意の分
割数に分配され第２口金板に送られ、鞘成分は第１流路
により２系統に別れて第２口金板に送られる。第２口金
板では、第１吐出孔より吐出された芯成分と第１流路の
１系統を介して流入した鞘成分が、第１狭隘口において
サイドバイサイド流を形成して第２吐出孔を経て第３口
金板に送られる。第３口金板では、第２吐出孔より吐出
された複合流を芯とし、第１流路の他系統を介して第２
狭隘口に流入する鞘成分を外皮となして第３吐出孔から
吐出され、このため芯成分は鞘成分に完全に覆われ、芯
成分が鞘成分の繊維表面に突き出すことがない。Since the present invention is constructed as described above,
In the first mouth plate, the core component is distributed through the first discharge hole in an arbitrary number of divisions and sent to the second mouth plate, and the sheath component is divided into two systems by the first flow path and sent to the second mouth plate. In the second mouth plate, the core component discharged from the first discharge hole and the sheath component flowing in through one system of the first flow path form a side-by-side flow at the first narrow opening and pass through the second discharge hole. It is sent to the third base plate. In the third mouth plate, the composite flow discharged from the second discharge hole is used as a core, and the second flow is passed through another system of the first flow path.
The sheath component flowing into the narrow mouth is discharged from the third discharge hole as an outer coat, so that the core component is completely covered with the sheath component and the core component does not protrude to the fiber surface of the sheath component.

【００１０】[0010]

【実施例】以下、本発明を図面に基づいて説明する。図
１は本発明の実施例を示す縦断面図であり、図２は平面
図、図３〜図６は各々図１のＶ−Ｖ、Ｗ−Ｗ、Ｘ−Ｘ、
Ｙ−Ｙ面の矢視図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, FIG. 2 is a plan view, and FIGS. 3 to 6 are VV, WW, XX of FIG. 1, respectively.
It is an arrow view of a YY plane.

【００１１】図において、１は上蓋であり、該上蓋１に
続いて順次、分配板２、第１口金板３、第２口金板４、
第３口金板５と５枚の板状体が積層されている。In the figure, reference numeral 1 denotes an upper lid, and following the upper lid 1, a distributor plate 2, a first mouth plate 3, a second mouth plate 4,
The third base plate 5 and five plate-shaped bodies are laminated.

【００１２】上蓋１には、中心位置に芯を形成する成分
Ａを供給する第１供給孔６、その側方に鞘を形成する成
分Ｂを供給する第２供給孔７が設けられている。The upper lid 1 is provided with a first supply hole 6 for supplying a component A forming a core at a central position and a second supply hole 7 for supplying a component B forming a sheath to the side thereof.

【００１３】分配板２には、第１供給孔６に対応して中
心部に円形状の分配口８が刻設されるとともに、周辺部
に環状の溝９が形成され、この溝９内に複数個の分配孔
１０が等間隔に配設され、また溝９に連通する流路１１
が各々の分配孔１０に対応して放射状に刻設されてい
る。１２は、流路１１の間に設けた成分Ｂの供給孔７に
連なる流入孔で、その出口１３が分配板２の下面中心部
に位置するように形成されている。In the distribution plate 2, a circular distribution port 8 is formed in the center portion corresponding to the first supply hole 6, and an annular groove 9 is formed in the peripheral portion. A plurality of distribution holes 10 are arranged at equal intervals, and a flow path 11 communicating with the groove 9 is formed.
Are radially engraved corresponding to each distribution hole 10. Reference numeral 12 denotes an inflow hole which is connected to the supply hole 7 for the component B provided between the flow paths 11, and is formed so that the outlet 13 thereof is located at the center of the lower surface of the distribution plate 2.

【００１４】第１口金板３は、各分配孔１０に対面して
第１導入口１４が設けられ、該導入口１４の底部に３個
の第１吐出孔１５が等間隔に配分されている。第１口金
板３の中心部には、円形の第１分配口１６が形成され、
該分配口１６の周辺部から下方に広がるように傾斜した
第１分配孔１７が第１導入口１４と同数個穿孔され、第
１口金板３の下面に出口が位置する如く形成されてい
る。The first mouth plate 3 is provided with a first introduction port 14 facing each distribution hole 10, and three first discharge holes 15 are distributed at equal intervals at the bottom of the introduction port 14. . A circular first distribution port 16 is formed at the center of the first mouth plate 3,
The same number of first distribution holes 17 as the first introduction port 14 are formed so as to spread downward from the peripheral portion of the distribution port 16 so that the outlets are located on the lower surface of the first mouth plate 3.

【００１５】また、第１分配口１６の中央部には、１個
の下端部を小径孔１９ａとした中央分配孔１９が設けら
れた段部２０を有するブロック体１８が交換可能に嵌着
されており、必要に応じて孔径、孔長などの異なるもの
と入れ換えられるようにされている。例えば、小径孔の
口径と長さの比を変えることで外層の鞘成分と内層の鞘
成分の面積比を容易に変更でき、繊維外層の鞘の厚みを
自在に変えることが可能になって好ましい。なお、第１
口金板３の第１分配口１６、第１分配孔１７、中央分配
孔１９はこれらによって成分Ｂを配分供給する第１通路
を形成している。Further, a block body 18 having a step portion 20 provided with a central distribution hole 19 whose one lower end is a small diameter hole 19a is replaceably fitted in the central portion of the first distribution port 16. The hole diameter and the hole length can be replaced with different ones as needed. For example, it is possible to easily change the area ratio of the sheath component of the outer layer and the sheath component of the inner layer by changing the ratio of the diameter and the length of the small diameter hole, and it is possible to freely change the thickness of the sheath of the fiber outer layer, which is preferable. . The first
The first distribution port 16, the first distribution hole 17, and the central distribution hole 19 of the base plate 3 form a first passage through which the component B is distributed and supplied.

【００１６】第２口金板４は、その中心部に第１口金板
３と同様に周辺部に第２分配孔２２を穿孔した第２分配
口２１が設けられ、この第２分配口２１と第２分配孔２
２などを含んで第２流路が形成され、中心位置の中央分
配孔１９から供給された成分Ｂを次の第３口金板５に分
割供給する如くされている。また、第２口金板４の周辺
部には第１吐出孔１５に対応してその外接円より大きい
径でかつ狭い通路を形成する第１狭隘口２３とその回り
を取り囲む、より深く刻設された第１均圧溝２４を上部
に有し、第１均圧溝２４の第２分配口２１側には第１分
配孔１７に連通する第１突起溝２５が形成されている。
第１狭隘口２３の中心部には、第２導入口２６とそれに
続いて第２吐出孔２７が設けられている。The second mouth plate 4 is provided with a second distribution port 21 having a second distribution hole 22 in the peripheral portion in the central portion thereof as in the first mouth plate 3, and the second distribution port 21 and the second distribution port 21 are provided. 2 distribution holes 2
A second flow path including 2 and the like is formed, and the component B supplied from the central distribution hole 19 at the central position is dividedly supplied to the next third mouth plate 5. Further, in the peripheral portion of the second mouth plate 4, a first narrow hole 23 having a diameter larger than the circumscribed circle corresponding to the first discharge hole 15 and forming a narrow passage and surrounding the first narrow hole 23 are deeply carved. Further, the first pressure equalizing groove 24 is provided on the upper portion, and the first protrusion groove 25 communicating with the first distribution hole 17 is formed on the second distribution port 21 side of the first pressure equalizing groove 24.
A second introduction port 26 and a second discharge hole 27 subsequent to the second introduction port 26 are provided at the center of the first narrow opening 23.

【００１７】第３口金板５は、その周辺部に第２口金板
４と同様に狭隘通路を形成する第２狭隘口２８、その外
周を取り囲みかつ第２分配孔２２に連通する第２突起溝
２９を有するより深く刻設した第２均圧溝３０が設けら
れ、その中心部には各々第２吐出孔２７に対応して底部
に第３吐出孔（紡糸孔）３２を設けた第３導入口３１が
配設されている。The third mouth plate 5 has a second narrow mouth 28 which forms a narrow passage in the peripheral portion thereof as in the case of the second mouth plate 4, and a second protrusion groove which surrounds the outer circumference thereof and communicates with the second distribution hole 22. A second introduction groove 30 having a deeper engraved second pressure equalizing groove 30 is provided, and a third discharge hole (spinning hole) 32 is provided at the bottom corresponding to the second discharge hole 27 at the center thereof. A mouth 31 is provided.

【００１８】上記のように構成された口金において、供
給孔６から導入された成分Ａは分配板２の分配口８にお
いて、放射状に刻設された流路１１を介して環状の溝９
に供給され、該溝９内に設けられた分配孔１０により任
意のフィラメント数（本例では８）に分割される。ま
た、成分Ｂは、供給孔７から流入孔１２を経て第１口金
板３の第１分配口１６に供給される。In the spinneret constructed as described above, the component A introduced from the supply hole 6 is distributed in the distribution port 8 of the distribution plate 2 through the radially engraved flow passages 11 to form an annular groove 9.
Are distributed to the filament 9 and are divided by the distribution hole 10 provided in the groove 9 into an arbitrary number of filaments (8 in this example). Further, the component B is supplied from the supply hole 7 through the inflow hole 12 to the first distribution port 16 of the first mouth plate 3.

【００１９】分配板２で分割された成分Ａは、分配孔１
０から第１口金板３の第１導入口１４に送られ、その底
部に設けた第１吐出孔１５を通して第２口金板４の第１
狭隘口２３に導入される。また、第１分配口１６に送ら
れた成分Ｂは、一部は中央分配孔１９から第２口金板４
の第２分配口２１に分配され、残部は放射状に設けた第
１分配孔１７により分割されて第２口金板４の第１突起
溝２５を経て、第１均圧溝２４に導入される。The component A divided by the distribution plate 2 is the distribution hole 1
From 0 to the first inlet 14 of the first mouth plate 3 and the first outlet 14 of the second mouth plate 4 through the first discharge hole 15 provided at the bottom thereof.
It is introduced into the narrow mouth 23. Further, part of the component B sent to the first distribution port 16 is partly fed from the central distribution hole 19 to the second mouth plate 4
Are distributed to the second distribution port 21, and the remaining part is divided by the first distribution holes 17 provided radially, and is introduced into the first pressure equalizing groove 24 through the first projecting groove 25 of the second mouth plate 4.

【００２０】第２口金板４では、第１均圧溝２４から第
１狭隘口２３に流入した成分Ｂの上部に第１吐出孔１５
からの成分Ａが流入する。ここで、成分Ａ、Ｂは、合流
して第１狭隘口２３の中心に位置ずる第２導入口２６に
流入し、図７（ａ）に示すようにサイドバイサイド形状
に形成されて第２吐出孔２７から第３口金板５の第２狭
隘口２８に吐出される。一方、第２分配口２１に送られ
た成分Ｂは、第２分配孔２２から第３口金板５の第２突
起溝２９を経て、第２均圧溝３０から第２狭隘口２８に
送られる。In the second mouth plate 4, the first discharge hole 15 is provided above the component B flowing from the first pressure equalizing groove 24 into the first narrow mouth 23.
Ingredient A from Here, the components A and B merge and flow into the second introduction port 26 located at the center of the first narrow opening 23, and are formed into a side-by-side shape as shown in FIG. It is discharged from 27 to the second narrow mouth 28 of the third mouth plate 5. On the other hand, the component B sent to the second distribution port 21 is sent from the second distribution hole 22 to the second projecting groove 29 of the third mouth plate 5 and from the second pressure equalizing groove 30 to the second narrow opening 28. .

【００２１】第３口金板５では、第２吐出孔２７より第
２狭隘口２８の中心部に成分Ａ、Ｂの複合流が吐出さ
れ、また第２均圧溝３０からは成分Ｂが第２狭隘口２８
に流入する。これによって、第２吐出孔２７より吐出さ
れた両成分Ａ、Ｂの複合流を芯とし、第２均圧溝３０か
ら第２狭隘口２８を介して流入する成分Ｂを外皮として
第３導入口３１にて、図７（ｂ）に示すような芯−外皮
流を形成し、次いで紡糸孔を形成する第３吐出孔３２よ
り吐出され、複合繊維を形成する。このようにして、成
分Ａ、Ｂの粘度差、流量などの如何に関わらず、成分Ａ
の繊維表面への突き出しを完全に防止することが可能と
なる。In the third mouth plate 5, a composite flow of the components A and B is discharged from the second discharge hole 27 to the center of the second narrow mouth 28, and the component B is discharged from the second pressure equalizing groove 30 into the second flow. Narrow mouth 28
Flows into. As a result, the composite flow of both components A and B discharged from the second discharge hole 27 is used as the core, and the component B flowing from the second pressure equalizing groove 30 through the second narrow port 28 is used as the outer skin and the third inlet port. At 31, a core-outer skin stream as shown in FIG. 7 (b) is formed, and then discharged from a third discharge hole 32 forming a spinning hole to form a composite fiber. In this way, regardless of the difference in viscosity between the components A and B, the flow rate, etc., the component A
It is possible to completely prevent the protrusion of the above to the fiber surface.

【００２２】この場合、成分Ａの繊維表面からの距離、
言い換えれば成分Ｂによる鞘の厚みは、分配孔１９、２
２、狭隘口２８、均圧溝３０などを通過する成分Ｂの量
により制御可能であり、また分配板２より流入する成分
Ｂの量、および分配孔１７−均圧溝２４−狭隘口２３と
分配孔１９−分配孔２２−均圧溝３０−狭隘口２８など
の圧力損失によって適宜決められる。In this case, the distance from the fiber surface of component A,
In other words, the thickness of the sheath formed by the component B is the distribution holes 19, 2
2, the amount of the component B passing through the narrow mouth 28, the pressure equalizing groove 30 and the like, and the amount of the component B flowing from the distribution plate 2, and the distribution hole 17-the pressure equalizing groove 24-the narrow aperture 23. It is appropriately determined by the pressure loss of the distribution hole 19, the distribution hole 22, the pressure equalizing groove 30, the narrow opening 28, and the like.

【００２３】ここで、図１に示すような口金、および図
８に示す如き３個の吐出孔１５を有する口金（図１の第
２口金板のないものとほぼ同じ）を使用し、成分Ａとし
て低融点ポリエステルにカーボンを練り込んだ導電性ポ
リマー、成分Ｂとして極限粘度０．６４のポリエチレン
テレフタレートを用い、常法により紡糸、延伸を行いポ
リエステル複合繊維を得た。これら複合繊維の断面模式
図を図９に示す。図９において、（ａ）は本発明に係る
図１の口金により、（ｂ）は比較例としての図８に示す
口金によるものである。Here, using a die as shown in FIG. 1 and a die having three discharge holes 15 as shown in FIG. 8 (almost the same as the one without the second die plate in FIG. 1), the component A is used. As a conductive polymer obtained by kneading carbon into a low melting point polyester as the component and polyethylene terephthalate having an intrinsic viscosity of 0.64 as the component B, spinning and drawing were carried out by a conventional method to obtain a polyester composite fiber. A schematic cross-sectional view of these composite fibers is shown in FIG. In FIG. 9, (a) is the base of FIG. 1 according to the present invention, and (b) is the base shown in FIG. 8 as a comparative example.

【００２４】図に示すように、比較例の口金によって製
糸した複合繊維は、芯成分が繊維表面に突き出している
に対し、本発明による口金で製糸した複合繊維は、芯成
分が鞘成分にて完全に覆われていた。As shown in the figure, in the composite fiber spun by the spinneret of the comparative example, the core component projects to the fiber surface, whereas in the spun fiber by the spinneret of the present invention, the core component is the sheath component. It was completely covered.

【００２５】以上は、導入口１４の底部に３個の吐出孔
１５を等間隔に配分して、三つ葉状の芯を形成した円形
断面の２成分系複合繊維の例について説明したが、これ
に限定されるものではなく、さらに口金板を加えたり、
また口金板などの形状などを変えることにより、異径断
面の鞘成分や、多葉状或いは多角形状、海島状など任意
の芯成分を有する２成分以上の多成分系の複合繊維を製
造する場合にも利用可能である。The example of the bicomponent composite fiber having a circular cross section in which three discharge holes 15 are distributed at equal intervals at the bottom of the introduction port 14 to form a trilobal core has been described above. It is not limited, you can add a base plate,
In addition, by changing the shape of the die plate, etc., in the case of producing a multi-component composite fiber of two or more components having a sheath component with a different diameter cross-section, an arbitrary core component such as multilobal shape, polygonal shape, sea island shape, etc. Is also available.

【００２６】[0026]

【発明の効果】以上に説明した如く、本発明によれば、
２種以上の紡糸成分の粘度差、流量などの如何に関わら
ず、芯となる成分の繊維表面への突き出しを完全に防止
し、安定かつ品質の優れた複合繊維を安定して得ること
が可能になるという顕著な効果を奏する。As described above, according to the present invention,
Regardless of the difference in viscosity between two or more spinning components, the flow rate, etc., it is possible to completely prevent the core component from sticking out to the fiber surface, and to obtain stable and excellent quality composite fibers. There is a remarkable effect of becoming.

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

【図１】本発明の実施例を示す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

【図２】図１の平面図である。FIG. 2 is a plan view of FIG.

【図３】図１のＶ−Ｖ面の矢視図である。FIG. 3 is a view taken along the line VV of FIG.

【図４】図１のＷ−Ｗ面の矢視図である。FIG. 4 is an arrow view of the WW plane of FIG.

【図５】図１のＸ−Ｘ面の矢視図である。5 is a view taken along the line XX in FIG.

【図６】図１のＹ−Ｙ面の矢視図である。FIG. 6 is an arrow view of the Y-Y plane of FIG. 1.

【図７】図１の口金による２成分Ａ、Ｂ複合流の生成過
程を説明するための横断面模式図である。FIG. 7 is a schematic cross-sectional view for explaining a process of generating a two-component A, B composite flow by the die of FIG.

【図８】従来の口金を示す要部断面図である。FIG. 8 is a sectional view of an essential part showing a conventional die.

【図９】複合繊維の断面模式図で、（ａ）は図１に示す
本発明による断面模式図であり、（ｂ）は図８に示す口
金による断面模式図である。9 is a schematic cross-sectional view of a composite fiber, (a) is a schematic cross-sectional view of the present invention shown in FIG. 1, and (b) is a schematic cross-sectional view of a die shown in FIG.

【符号の説明】[Explanation of symbols]

１ 蓋 ２ 分配板 ３ 第１口金板 ４ 第２口金板 ５ 第３口金板 ８ 分配口 １０ 分配孔 １４ 第１導入口 １５ 第１吐出孔 １６ 第１分配口 １７ 第１分配孔 １８ ブロック体 １９ 中央分配孔 １９ａ 小径孔 ２１ 第２分配口 ２２ 第２分配孔 ２３ 第１狭隘口 ２４ 第１均圧溝 ２６ 第２導入口 ２７ 第２吐出孔 ２８ 第２狭隘口 ３０ 第２均圧溝 ３１ 第３導入口 ３２ 第３吐出孔 DESCRIPTION OF SYMBOLS 1 Lid 2 Distribution plate 3 1st mouth plate 4 2nd mouth plate 5 3rd mouth plate 8 Distribution port 10 Distribution hole 14 1st introduction port 15 1st discharge hole 16 1st distribution port 17 1st distribution hole 18 Block body 19 Central distribution hole 19a Small diameter hole 21 Second distribution port 22 Second distribution hole 23 First narrow mouth 24 First pressure equalizing groove 26 Second inlet 27 Second discharge hole 28 Second narrowing mouth 30 Second pressure equalizing groove 31 3 introduction port 32 3rd discharge hole

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 ２種以上の紡糸成分より複合繊維を製造
するに際し、少なくとも３個の積層した口金板を使用
し、先ず複数の吐出孔を設けた導入口を有する第１口金
板に一方の成分を供給して任意の分割数にて第２口金板
に形成した第１狭隘口に吐出するとともに、他方の成分
は第１口金板に設けた少なくとも２つの流路を介して一
部を一方の流路から前記第１狭隘口に該狭隘口の周囲か
ら導入することによりサイドバイサイド流を形成して第
２口金板の吐出孔に供給し、残部は他方の流路から第２
口金板に設けた分配孔を介して第３口金板の第２狭隘口
にその周囲から導入して前記吐出孔より吐出されたサイ
ドバイサイド流を被覆する外皮を形成し、形成された芯
−外皮流を第２狭隘口の内部に設けた吐出孔に導入して
該吐出孔から吐出することを特徴とする複合繊維の製造
方法。1. When producing a composite fiber from two or more kinds of spinning components, at least three laminated spinnerets are used, and one of the first spinneret having an inlet having a plurality of discharge holes is used. The component is supplied and discharged at an arbitrary number of divisions to the first narrow mouth formed on the second mouth plate, while the other component is partially passed through at least two flow paths provided on the first mouth plate. Is introduced into the first narrow mouth from the periphery of the narrow mouth to form a side-by-side flow, and the side-by-side flow is supplied to the discharge holes of the second mouth plate.
A core-outer skin flow formed by forming a skin covering the side-by-side flow discharged from the discharge hole by introducing it from the periphery of the second narrow mouth of the third mouth plate through a distribution hole provided in the mouth plate. Is introduced into a discharge hole provided inside the second narrow opening and discharged from the discharge hole. 【請求項２】 ２種以上の紡糸成分より複合繊維を製造
するための紡糸口金であって、少なくとも第１、第２、
第３の３つの口金板を含んで構成され、第１口金板は一
方の成分を任意の分割数にて吐出する複数の第１吐出孔
を有する導入口と、他方の成分を少なくとも２つに分け
る第１流路を設けており、第２口金板は前記第１流路の
１つと連通する環状の第１均圧溝および該均圧溝内に第
１吐出孔と対面して狭隘な通路を形成する第１狭隘口並
びにその中心部に狭隘部よりさらに下流の第３口金板へ
吐出する第２吐出孔と、他の第１流路と連絡し下流に導
く第２流路を有しており、第３口金板は第２吐出孔の下
方位置に該吐出孔に対応する第３吐出孔を有する第２狭
隘口、該狭隘口を取り囲み第２流路に連通する第２均圧
溝を設けたことを特徴とする複合紡糸用口金。2. A spinneret for producing a composite fiber from two or more spinning components, the spinneret comprising at least first, second, and
The third mouthpiece plate is included, and the first mouthpiece plate has an inlet having a plurality of first ejection holes for ejecting one component at an arbitrary division number and at least two other components. A first flow path for division is provided, and the second mouth plate has an annular first pressure-equalizing groove communicating with one of the first flow paths and a narrow passage facing the first discharge hole in the pressure-equalizing groove. Has a first narrow opening and a second discharge hole at the center thereof for discharging to a third mouth plate further downstream from the narrow section, and a second flow path communicating with another first flow path and leading downstream. The third mouth plate has a second narrow opening having a third discharge hole corresponding to the second discharge hole at a position below the second discharge hole, and a second pressure equalizing groove surrounding the narrow narrow hole and communicating with the second flow path. A spinneret for composite spinning, characterized in that 【請求項３】 上から順次上蓋、分配板、第１口金板、
第２口金板、第３口金板を積層した構成からなり、上蓋
は中心部に芯成分液を供給する第１供給孔、その周辺に
鞘成分液の供給を行う第２供給孔を有し、分配板は第１
供給孔から供給された芯成分を周辺部に設けた複数の分
配孔に配分する分配溝を有し、かつ第１供給孔に連絡し
中心部下面に開口する孔を設け、第１口金板は分配孔に
対応して芯成分を任意の分割数にて吐出する第１吐出孔
と、第２供給孔に連通し鞘成分を中央部とその周辺部の
少なくとも２つに分ける第１流路を有し、第２口金板は
第１吐出孔と対応する位置に狭隘通路を形成し、その中
心部に第２吐出孔を設けた第１狭隘口、該狭隘口の周囲
により深く刻設した周辺部の第１流路に連通する第１均
圧溝と、中央部の第１流路と連通し鞘成分液を分配する
第２流路を設け、第３口金板は第２吐出孔に対応する位
置に狭隘路を形成しその中心部に第３吐出孔を設けた第
２狭隘口を有し、かつその周囲により深く刻設しかつ第
２流路に連通する第２均圧溝を設けたことを特徴とする
複合紡糸用口金。3. A top lid, a distribution plate, a first mouth plate,
The second lid plate and the third mouth plate are laminated, and the upper lid has a first supply hole for supplying the core component liquid to the central portion and a second supply hole for supplying the sheath component liquid to the periphery thereof, Distribution plate is first
The core plate is provided with a distribution groove for distributing the core component supplied from the supply hole to a plurality of distribution holes provided in the peripheral portion, and a hole communicating with the first supply hole and opening to the lower surface of the central portion is provided. A first discharge hole that discharges the core component in an arbitrary number of divisions corresponding to the distribution hole, and a first flow path that communicates with the second supply hole and divides the sheath component into at least two of a central portion and a peripheral portion thereof. The second mouth plate has a narrow passage formed at a position corresponding to the first discharge hole, and a first narrow mouth having a second discharge hole at the center thereof, and a periphery formed deeper around the narrow mouth. The first pressure equalizing groove communicating with the first flow passage of the part and the second flow passage communicating with the first flow passage of the central part and distributing the sheath component liquid are provided, and the third mouth plate corresponds to the second discharge hole. Has a second narrow opening having a third discharge hole at the center thereof, and has a narrow narrow passage formed in the position where the narrow narrow passage is formed and communicates with the second flow path. Composite spinning spinneret, characterized in that a 2 equalizing grooves. 【請求項４】 中央部の第１流路が第１口金板に交換可
能に挿着されたブロック体に形成されている請求項３記
載の複合紡糸用口金。4. The spinneret for composite spinning according to claim 3, wherein the first flow path in the central portion is formed in a block body that is replaceably inserted in the first spinneret plate.