JPH04174733A - Covering yarn for knit fabric - Google Patents

Covering yarn for knit fabric

Info

Publication number
JPH04174733A
JPH04174733A JP29541590A JP29541590A JPH04174733A JP H04174733 A JPH04174733 A JP H04174733A JP 29541590 A JP29541590 A JP 29541590A JP 29541590 A JP29541590 A JP 29541590A JP H04174733 A JPH04174733 A JP H04174733A
Authority
JP
Japan
Prior art keywords
yarn
fineness
covering
spinning
winding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP29541590A
Other languages
Japanese (ja)
Inventor
Nobutoshi Tsutsumi
堤 信寿
Yoshinori Sasaki
義憲 佐々木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nisshinbo Holdings Inc
Original Assignee
Nisshinbo Industries Inc
Nisshin Spinning Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nisshinbo Industries Inc, Nisshin Spinning Co Ltd filed Critical Nisshinbo Industries Inc
Priority to JP29541590A priority Critical patent/JPH04174733A/en
Publication of JPH04174733A publication Critical patent/JPH04174733A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the subject yarn having excellent uniformity, mechanical strength and frictional resistance and useful for socks, etc., by winding a covering yarn composed of a thermoplastic polymer filament on a core yarn composed of a monofilament spandex yarn having a fineness falling within a specific range. CONSTITUTION:The objective yarn can be produced by winding a covering yarn composed of a filament of a thermoplastic polymer such as polyamide on a core yarn composed of a monofilament spandex yarn having a fineness of 12-23 de in single or multiple layers.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、ポリウレタン系の弾性糸にポリアミド等の熱
可塑性合成長繊維糸条を巻付けてなる被覆弾性糸(カバ
リング糸)の改良に関する。特に、ソックスやストッキ
ング等の靴下用素材として有用な被覆弾性糸に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improvement in a covered elastic yarn (covering yarn) made by winding a thermoplastic synthetic fiber yarn such as polyamide around a polyurethane elastic yarn. In particular, the present invention relates to a coated elastic yarn useful as a material for socks, stockings, etc.

従来の技術 ポリウレタン系等の弾性糸の回りにポリアミド長繊維の
如き熱可塑性合成繊維を一重又は二重以上に巻付けるこ
とによって、弾性糸の欠点である染色特性、機械的強度
、耐摩擦特性などをカバーして用いることが広く行われ
ている。この被覆弾性糸は、10〜70デニールの弾性
糸条に、5〜70デニールの被覆用糸を一重又は二重(
ダブル)等に巻付けることによって一般に製造される。
Conventional Technology By wrapping thermoplastic synthetic fibers such as polyamide filaments in one or more layers around elastic threads such as polyurethane threads, it is possible to overcome the disadvantages of elastic threads such as dyeing properties, mechanical strength, and abrasion resistance. It is widely used to cover. This coated elastic yarn is made of elastic yarn of 10 to 70 deniers and covering yarn of 5 to 70 deniers in a single or double layer (
It is generally manufactured by winding it around a double (double) etc.

発明が解決しようとする課題 カバリング糸の製品の品質を安定して得る為に、カバリ
ング糸の撚数、伸縮性、繊度は高い均整度を必要とされ
る。また、カバリング糸と同様にスパンデックス糸も高
い均整度を要求されている。
Problems to be Solved by the Invention In order to stably obtain the quality of a covering yarn product, the number of twists, elasticity, and fineness of the covering yarn must be highly uniform. Furthermore, like covering yarn, spandex yarn is also required to have a high degree of uniformity.

スパンデックス糸製造工程において、均整度を低下させ
る要因としては、不活性ガスの乱れ、紡糸用原液の吐出
斑、紡糸中の糸揺れ、ガイド等の接触抵抗等が考えられ
る。一般に、乾式紡糸法スパンデックス糸は、繊度5〜
10デニールの単糸を合着してマルチフィラメント糸と
して紡糸されている。合着方法としては、空気式や機械
式の仮撚装置が一般的に用いられているが、接触抵抗に
よる均整度の低下、合着点の不安定性等により均整度の
低下を生じる。又、見掛は上の太さに斑がでやすい。
In the spandex yarn manufacturing process, possible factors that reduce the uniformity include turbulence in the inert gas, uneven discharge of the spinning stock solution, yarn shaking during spinning, and contact resistance of guides, etc. In general, dry-spun spandex yarn has a fineness of 5 to 5.
10 denier single yarns are spun together to form a multifilament yarn. As a bonding method, pneumatic or mechanical false twisting devices are generally used, but the degree of uniformity decreases due to contact resistance, instability of the bonding point, etc. Also, the appearance tends to be uneven on the upper thickness.

それに対して、モノフィラメントスパンデックス糸では
、この工程を必要としない為、優れた均整度を有する糸
が得られる。さらに見掛は上の太さが一定であり、糸の
断面積の円形のものが得られ易い。
In contrast, monofilament spandex yarns do not require this step, resulting in yarns with excellent uniformity. Furthermore, the apparent thickness at the top is constant, and it is easy to obtain threads with a circular cross-sectional area.

本発明は繊度15〜20デニールのモノフィラメントス
パンデックス糸からなる芯糸を用いた編地用の均整度の
良いカバリング糸を提供するものである。
The present invention provides a well-balanced covering yarn for knitted fabrics using a core yarn made of monofilament spandex yarn with a fineness of 15 to 20 deniers.

課題を解決するための手段 本発明は、繊度12〜23デニールのモノフィラメント
スパンデックス糸からなる芯糸に、熱可塑性重合体の長
繊維からなる被覆用糸を多重に巻付けて形成されたカバ
リング糸、である。
Means for Solving the Problems The present invention provides a covering yarn formed by wrapping a covering yarn made of long fibers of a thermoplastic polymer multiple times around a core yarn made of a monofilament spandex yarn having a fineness of 12 to 23 deniers. It is.

先ず、本発明の芯糸に用いる繊度12〜23デニールの
モノフィラメントスパンデックス糸は、本出願人の平成
2年11月20提出の特許願(1)の方法によって製造
できる。モノフィラメントを製造できる範囲でカバリン
グができる。
First, the monofilament spandex yarn having a fineness of 12 to 23 deniers used as the core yarn of the present invention can be manufactured by the method described in Patent Application (1) filed by the present applicant on November 20, 1990. Covering is possible to the extent that monofilament can be manufactured.

すなわち、紡糸孔を有する紡糸口金を通して、スパンデ
ックス重合体の溶剤含有溶液を長さ8〜12m1直径3
00〜500 cmの紡糸筒中に押出して繊維を形成せ
しめ、該繊維を支持されざる状態において該筒中を前進
せしめて、その間同時に該筒中にガス温150〜250
°C1風量3〜15Nm8/hrの気体状の蒸発用媒体
を導入し巻取速度200〜500m/minで巻取るこ
とを特徴とする乾式紡糸法で製造できる。
That is, a solvent-containing solution of spandex polymer is passed through a spinneret with spinning holes into a 8-12 m long, 3 ml diameter
The fibers are extruded into a spinning tube of 00 to 500 cm, and the fibers are advanced through the tube in an unsupported state, while at the same time the gas temperature in the tube is 150 to 250 cm.
It can be produced by a dry spinning method characterized by introducing a gaseous evaporation medium with an air flow rate of 3 to 15 Nm8/hr at °C and winding at a winding speed of 200 to 500 m/min.

ここで、スパンデックス糸とはポリウレタン類を弾性糸
としたもので、公知の方法で製造できる。
Here, the spandex yarn is an elastic yarn made of polyurethane, and can be manufactured by a known method.

又、特公昭39−29637号記載の多くのセグメント
を有するポリウレタン類も本発明の実施に有用である。
Polyurethanes having many segments as described in Japanese Patent Publication No. 39-29637 are also useful in the practice of the present invention.

溶剤としては、N、 N’−ジメチルホルムアミド、N
、N“−ジメチルアセタミド、テトラメチレンスルホン
、蟻酸、および1.1.2− )リクロルエタンと蟻酸
との混合物が含まれる。
As a solvent, N, N'-dimethylformamide, N
, N"-dimethylacetamide, tetramethylene sulfone, formic acid, and 1.1.2-) a mixture of dichloroethane and formic acid.

この製造方法では紡糸筒の長さを従来の5〜7mから、
8〜12mに延長した。これは、モノフィラメント糸の
繊度を従来の5〜10デニールから12〜23デニール
に太デニール化したため、溶剤蒸発量が増加したためで
ある。溶剤蒸発量を多(するためには、通常筒内温度を
高くし、ガス風量を多(する方法が考えられるが、この
方法では糸質の低下を招く。
With this manufacturing method, the length of the spinning tube has been changed from the conventional 5 to 7 m.
It was extended to 8-12m. This is because the amount of solvent evaporation increased because the fineness of the monofilament yarn was increased from the conventional 5 to 10 deniers to 12 to 23 deniers. In order to increase the amount of solvent evaporated, the usual method is to raise the temperature inside the cylinder and increase the gas flow rate, but this method results in a decrease in the quality of the yarn.

一方、紡糸筒を長くすると、溶剤蒸発量は増加するが筒
内でのガスの整流が難しくなり、ガスの流れが乱流とな
り易い。このような状態になると、糸揺れが大きくなり
、糸質が低下する。特にデニール斑が大きくなり、特に
マルチフィラメントに顕著で、従来紡糸筒の長さは5〜
7mに留められていた。
On the other hand, if the spinning cylinder is lengthened, the amount of solvent evaporated increases, but it becomes difficult to rectify the gas within the cylinder, and the gas flow tends to become turbulent. In such a state, yarn swing becomes large and yarn quality deteriorates. In particular, denier unevenness becomes large, especially noticeable in multifilaments, and the conventional spinning tube length is 5~
It was kept at 7m.

整流とするため風量を少なくすることも試みたが筒内の
溶剤濃度が高(なり弗化が困難となるため、風量を一定
にして、風速を遅くし、このために紡糸筒の直径を糸が
完成するまでは大きくした。
We also tried to reduce the air volume to achieve rectification, but the concentration of solvent in the cylinder was too high (and fluorification became difficult), so we kept the air volume constant and slowed the wind speed, and in order to do this, we changed the diameter of the spinning cylinder to reduce the diameter of the spinning cylinder. I enlarged it until it was completed.

一般的に紡糸筒の直径は150〜300 cmであるが
、本発明では300〜500cmとした。この紡糸筒の
一例の概略図を第1図に示す。1は紡糸筒、2は糸が完
成する部分の直径(a−500mm)、b = 300
mm 。
Generally, the diameter of the spinning tube is 150 to 300 cm, but in the present invention it is 300 to 500 cm. A schematic diagram of an example of this spinning tube is shown in FIG. 1 is the spinning tube, 2 is the diameter of the part where the yarn is completed (a - 500 mm), b = 300
mm.

c = 4.000mm、d = 10.000mmで
ある。
c = 4.000mm, d = 10.000mm.

ここで風量は3〜15Nm3/hr、好ましくは4〜1
ONm3/hrであり、風量が少なければ溶剤が充分蒸
発せず、風量が多ければ乱流を生ずる。
Here, the air volume is 3 to 15 Nm3/hr, preferably 4 to 1
ONm3/hr, if the air volume is small, the solvent will not evaporate sufficiently, and if the air volume is large, turbulence will occur.

次にガス温度は従来150〜400°Cで、この温度で
紡糸口金直下50〜200cmで90%以上の溶剤を蒸
発させ、500 cmまでには、はぼ100%近(蒸発
している。本方法ではガス温度を150〜250’C1
好ましくは180〜220°Cとした。ガス温度が15
0℃未満では溶剤蒸発が充分でな(,250℃超ではそ
れだけ早く糸が完成することになり、糸にストレッチが
かかる長さが長くなることになり、糸の伸度が低下し、
糸切れが多発し、紡糸巻取りが不安定になる。
Next, the gas temperature is conventionally 150 to 400°C, and at this temperature, more than 90% of the solvent is evaporated 50 to 200 cm directly below the spinneret, and by 500 cm, nearly 100% (evaporated). In the method, the gas temperature is set at 150 to 250'C1.
Preferably the temperature was 180 to 220°C. Gas temperature is 15
At temperatures below 0°C, solvent evaporation will not be sufficient (at temperatures above 250°C, the yarn will be completed sooner, the length of the yarn being stretched will become longer, and the elongation of the yarn will decrease.
Yarn breakage occurs frequently, making spinning and winding unstable.

なお、糸の巻取り速度は糸の伸度、強度から200〜5
00m/min、好ましくは300〜400m/mi 
nが適当である。巻取り速度が500m/min超では
溶剤の蒸発が不充分になり巻取りが困難となる。又20
0m/n+in未満では生産性が悪くなるので好ましく
ない。
In addition, the winding speed of the thread is 200 to 5, depending on the elongation and strength of the thread.
00m/min, preferably 300-400m/min
n is appropriate. If the winding speed exceeds 500 m/min, the solvent will not evaporate sufficiently, making winding difficult. 20 again
If it is less than 0 m/n+in, productivity will deteriorate, which is not preferable.

以下モノフィラメントスパンデックス糸の製造方法を参
考例1〜3に示す。
The method for producing monofilament spandex yarn is shown below in Reference Examples 1 to 3.

参考例] 溶剤としてジメチルアセトアミドを用いて通常の方法で
重合したポリマー濃度25%のポリウレタン溶液を乾式
紡糸法によって紡糸した。溶液の粘度は2000ポイズ
(40°C)である。この溶液を60°Cのジャケット
中の配管を通じながら、ギヤポンプで紡糸口金から紡糸
筒内に押出した。同時に190°Cに加熱した不活性ガ
スを糸と同一方向に吹込んだ。その時の風量は、8 N
m”/hrである。紡糸時の巻取速度は400m/mi
nであった。
Reference Example] A polyurethane solution having a polymer concentration of 25%, which was polymerized by a conventional method using dimethylacetamide as a solvent, was spun by a dry spinning method. The viscosity of the solution is 2000 poise (40°C). This solution was extruded from the spinneret into the spinning tube using a gear pump while passing through piping in a jacket at 60°C. At the same time, inert gas heated to 190°C was blown in the same direction as the yarn. The air volume at that time was 8 N.
m”/hr. The winding speed during spinning is 400 m/mi.
It was n.

得られた糸は、繊度20デニール、強度1.45g/d
 。
The obtained yarn has a fineness of 20 denier and a strength of 1.45 g/d.
.

300%引張応力4.3g、伸度450%であった。The 300% tensile stress was 4.3 g and the elongation was 450%.

参考例2 参考例1と同一溶液を用いて紡糸した。この溶液を60
°Cのジャケット中の配管を通じながら、ギヤポンプで
紡糸口金から紡糸筒内に押出した。同時に、200℃に
加熱した不活性ガスを糸と同一方向に吹込んだ。その時
の風量は、7 Nm8/hrである。
Reference Example 2 The same solution as Reference Example 1 was used for spinning. Add this solution to 60
It was extruded from the spinneret into the spinning tube by a gear pump while passing through piping in a jacket at .degree. At the same time, inert gas heated to 200°C was blown in the same direction as the yarn. The air volume at that time was 7 Nm8/hr.

紡糸時の巻取速度は400m/minであった。The winding speed during spinning was 400 m/min.

得られた糸は、繊度18デニール、強度1.4.8[/
cl、300%引張応力4.1g、伸度450%であっ
た。
The obtained yarn has a fineness of 18 denier and a strength of 1.4.8 [/
cl, 300% tensile stress of 4.1 g, and elongation of 450%.

参考例3 参考例1と同一溶液を用いて紡糸した。この溶液を60
°Cのジャケット中の配管を通じながら、ギヤポンプで
紡糸口金から紡糸筒内に押出した。同時に、180℃に
加熱した不活性ガスを糸と同一方向に吹込んだ。その時
の風量は、5Nm8/hrである。
Reference Example 3 The same solution as Reference Example 1 was used for spinning. Add this solution to 60
It was extruded from the spinneret into the spinning tube by a gear pump while passing through piping in a jacket at .degree. At the same time, inert gas heated to 180°C was blown in the same direction as the yarn. The air volume at that time was 5 Nm8/hr.

紡糸時の巻取速度は400m/minであった。The winding speed during spinning was 400 m/min.

得られた糸は、繊度15デニール、強度1.58g/d
、300%引張応力3. sg、伸度440%であった
The obtained yarn has a fineness of 15 denier and a strength of 1.58 g/d.
, 300% tensile stress3. sg, and the elongation was 440%.

一方、被覆用糸をなす熱可塑性重合体の長繊維としては
、ポリアミド、ポリエステル、ポリオレフィン、ポリア
クリル繊維等が用いられるが、染色特性、機械的特性、
耐摩擦特性等に優れたポリアミド繊維が好ましく、さら
にポリアミドの中でもこれら特性の特に優れたナイロン
6やナイロン66の繊維が好ましい。
On the other hand, polyamide, polyester, polyolefin, polyacrylic fibers, etc. are used as the long fibers of thermoplastic polymers that make up the coating thread, but the dyeing properties, mechanical properties,
Polyamide fibers with excellent abrasion resistance properties are preferred, and among polyamides, nylon 6 and nylon 66 fibers are particularly preferred as they have particularly excellent properties.

巻付けは通常1〜2重が普通であるが、特に限定するも
のではない。
The winding is usually one to two times, but is not particularly limited.

実施例1〜3、比較例1〜2 参考例1〜3で製造した15〜20dの各モノフィラメ
ントスパンデックス糸と15d/3フイラメント、20
d/3フィラメントの比較を行った。
Examples 1 to 3, Comparative Examples 1 to 2 Each monofilament spandex yarn of 15 to 20 d and 15 d/3 filament, 20 d manufactured in Reference Examples 1 to 3
A comparison was made of d/3 filaments.

スパンデックス糸を3倍に伸ばし、12d15フイラメ
ントのナイロン糸を1400T/Mで一重に巻きつけて
カバリング糸を作製した。このカバリング糸と13d/
3フィラメントのナイロン糸とを使用して交諭し通常の
方法でパンティーストッキングを作製し、その編地を比
較した。
A covering yarn was prepared by stretching the spandex yarn three times and wrapping it in a single layer with a 12d15 filament nylon yarn at 1400 T/M. This covering thread and 13d/
Pantyhose were made in the usual way using 3-filament nylon yarn, and the knitted fabrics were compared.

実施例   比較例 1.2812 スパンデックス糸の繊度      1.5  18 
 20    15  20スパンデツクス糸のフィラ
メント数   111     33編地の均整度  
  ◎ ◎ ◎  ○ O実施例4〜6、比較例3〜4 参考例1〜3で製造した15〜20デニールの各モノフ
ィラメントスパンデックス糸と15d/3フイラメント
、20d/3フイラメントの比較を行った。
Example Comparative Example 1.2812 Fineness of spandex yarn 1.5 18
20 15 20 Number of filaments of spandex yarn 111 33 Evenness of knitted fabric
◎ ◎ ◎ ○ O Examples 4 to 6, Comparative Examples 3 to 4 Each monofilament spandex yarn of 15 to 20 denier produced in Reference Examples 1 to 3 was compared with a 15d/3 filament and a 20d/3 filament.

スパンデックス糸を3倍に伸長し、10d15フィラメ
ントのナイロン糸を1.400T/Mで一重に巻きつけ
てカバリング糸を作製した。結糸口数40のパンティー
ストッキング用編機の全結糸口にこのカバリング糸を用
いてパンティーストッキングを作製した。
A covering yarn was prepared by elongating the spandex yarn three times and wrapping it with a 10d15 filament of nylon yarn at 1.400 T/M. Pantyhose were produced by using this covering yarn in all the tying ports of a pantyhose knitting machine having 40 tying ports.

実施例   比較例 スパンデックスの繊度        15  18 
 20  ’   15  20スバンデブクスのフィ
ラメソ)・数     111     33編地の均
整度    ◎ ◎ ○  △ ×発明の効果 上記に示したように太デニールモノフィラメントスパン
デックス糸を使ったカバリング糸を用いて製品を作ると
編面が良い製品ができる。
Example Comparative example Spandex fineness 15 18
20 ' 15 20 Subandebukusu filames)・Number 111 33 Evenness of knitted fabric ◎ ◎ ○ △ ×Effect of the invention As shown above, when a product is made using a covering yarn using thick denier monofilament spandex yarn, the knitted surface is can produce good products.

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

第1図は紡糸筒の1例を示す概略図である。 FIG. 1 is a schematic diagram showing an example of a spinning tube.

Claims (1)

【特許請求の範囲】[Claims] 1.繊度12〜23デニールのモノフィラメントスパン
デックス糸からなる芯糸に、熱可塑性重合体の長繊維か
らなる被覆用糸を一重又は二重以上に巻付けて形成され
たカバリング糸。
1. A covering yarn formed by wrapping a covering yarn made of long fibers of a thermoplastic polymer in one or more layers around a core yarn made of monofilament spandex yarn with a fineness of 12 to 23 deniers.
JP29541590A 1990-11-02 1990-11-02 Covering yarn for knit fabric Pending JPH04174733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29541590A JPH04174733A (en) 1990-11-02 1990-11-02 Covering yarn for knit fabric

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29541590A JPH04174733A (en) 1990-11-02 1990-11-02 Covering yarn for knit fabric

Publications (1)

Publication Number Publication Date
JPH04174733A true JPH04174733A (en) 1992-06-22

Family

ID=17820310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29541590A Pending JPH04174733A (en) 1990-11-02 1990-11-02 Covering yarn for knit fabric

Country Status (1)

Country Link
JP (1) JPH04174733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009287164A (en) * 2002-03-11 2009-12-10 Dow Global Technologies Inc Reversible, heat-set, elastic fibers, and method of making and articles made from same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009287164A (en) * 2002-03-11 2009-12-10 Dow Global Technologies Inc Reversible, heat-set, elastic fibers, and method of making and articles made from same
JP2010059597A (en) * 2002-03-11 2010-03-18 Dow Global Technologies Inc Reversible heat-set elastic fiber, method of producing the same and product produced from the same

Similar Documents

Publication Publication Date Title
WO2023116210A1 (en) Method for preparing poy/fdy polyester-polyester composite yarn
US5002474A (en) Spinneret for dry spinning spandex yarns
TWI760592B (en) Polyamide multifilament and lace fabric using same
DK148486B (en) FALSE PREPARATION EXTENDED FILAMENT YARN WITH CORE AND COVERAGE OF SAME OR DIFFERENT SYNTHETIC POLYMERS AND PROCEDURES FOR PRODUCING THEREOF
US4226076A (en) Apparatus and process for producing a covered elastic composite yarn
JP3391789B2 (en) Production of yarn consisting of heart and sheath filament
US3777470A (en) Method of forming a yarn package
US4054025A (en) Process for the production of filament yarns with statistically distributed, broken individual filaments
US3342027A (en) Coalesced multifilament yarn
JPH04174733A (en) Covering yarn for knit fabric
CN108360106A (en) Four section chief's silk threads with drawn expanded performance and its manufacturing method
TWI793386B (en) Polyamide multifilament and covered elastic yarn
KR100316618B1 (en) Production of combined filament yarn of different shrinkage
KR100608166B1 (en) Manufacturing method of polyester monofilament dyed yarn and yarn manufactured thereby
JP2817390B2 (en) Method for producing spandex monofilament
JP2004052173A (en) High-strength polyester monofilament and method for producing the same
JPH0291238A (en) Polyester covering yarn
JP2866190B2 (en) Method for producing mixed fiber having different elongation
JP3543354B2 (en) Drum-shaped package for mixed knitting yarn and method for producing knitted stocking knitted fabric using the same
JPS61245307A (en) Production of specific filament of polyester
JP3280542B2 (en) Covering yarn for stocking and method for producing the same
JPS61194213A (en) Fine denier polyester fiber
JPS61282407A (en) Spinneret
KR930003357B1 (en) Pack apparatus for preparation of conjugated yarn
JP2891482B2 (en) Method for producing loop yarn