JPH0160568B2 - - Google Patents

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Publication number
JPH0160568B2
JPH0160568B2 JP58002951A JP295183A JPH0160568B2 JP H0160568 B2 JPH0160568 B2 JP H0160568B2 JP 58002951 A JP58002951 A JP 58002951A JP 295183 A JP295183 A JP 295183A JP H0160568 B2 JPH0160568 B2 JP H0160568B2
Authority
JP
Japan
Prior art keywords
yarn
polyester fiber
filaments
twisted
texture
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.)
Expired
Application number
JP58002951A
Other languages
Japanese (ja)
Other versions
JPS59130336A (en
Inventor
Eiichiro Taki
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.)
Toyobo Co Ltd
Original Assignee
Toyobo 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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP295183A priority Critical patent/JPS59130336A/en
Publication of JPS59130336A publication Critical patent/JPS59130336A/en
Publication of JPH0160568B2 publication Critical patent/JPH0160568B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は、織物上で適度なふくらみとドレープ
性とを有し、ボテ感のない風合を得る特殊嵩高糸
の製造法に関する。 ポリエステル繊維のフイラメントは、通常、そ
のままでは一般衣料用としては使用されにくい。
けだし、こフイラメント使い織物は風合が粗硬で
あるからである。したがつて、ポリエステル繊維
のフイラメント量は、裏地または傘地などの用途
に主に使用されている。 それ故、ポリエステル繊維のフイラメントを衣
料用として汎用性ある用途へ展開するため、従来
から仮撚加工などの嵩高加工が行なわれてきた。 しかし、仮撚加工などの嵩高加工によると、柔
らかい風合の糸が得られるものの、この糸にはい
わゆるボテ感があり、またドレープ性にも欠ける
といつた欠点があり、かかる糸は、時代によつて
はフアツシヨン性に乏しいとして嫌われている。 本発明は、かかるポリエステル繊維のフイラメ
ント又はその仮撚加工糸の欠点を解消し、絹のよ
うなふくなみ、弾発性、暖みのある触感などを有
し、適度のふくらみとドレープ性とを有する特殊
嵩高糸の製造法を提供すること目的とする。 そのために、本発明は、次のような構成を有す
る。すなわち、本発明は、複屈折率が80×10-3
下であるポリエステル繊維の未延伸糸をTg℃以
下の温度で且つ加撚状態で延伸することを特徴と
する特殊嵩糸の製造法である。ここにTg℃はポ
リエステル繊維の二次転移点である。以下に、本
発明を図に基づいて詳細に説明する。図は、あく
までも説明のためのものであつて、本発明の精神
を失なわない限り、変更は許容される。第1図
は、本発明を実施するために用いた装置の略正面
図、第2図は本発明によつて得られた特殊嵩高糸
の略側面図である。第1図において、Yは複屈折
率が80×10-3以下であるポリエステル繊維の未延
伸糸である。この未延伸糸は半延伸糸を含む広い
概念で用いられる。この場合のポリエステル繊維
は、その反復単位の85モル%以上がエチレンテレ
フタレートよりなるもので、特にテレフタル酸ま
たはその機能的誘導体とエチレングリコールとか
ら製造されるポリエステル繊維を主たる対象とす
るが、酸成分としてテレフタル酸またはその機能
的誘導体の1部15モル%未満までの例えばイソフ
タル酸、アジピン酸、セバチン酸もしくはそれら
の機能的誘導体等の中から選択された2官能性酸
の少なくとも1種でおきかけた共重合ポリエステ
ル繊維をも含むものである。未延伸糸の複屈折率
は80×10-3以下でなければならない。けだし、80
×10-3を越えると加撚状態でマイグレーシヨンを
起し易く、繊維間で収縮差を起しがたくなり、目
的の特殊嵩高糸にならないからである。好ましく
は5×10-3以上であるのがよい。けだし、加工
性、風合面を考慮するためである。かかるポリエ
ステル繊維の未延伸糸Yは、フイードローラ3と
デリベリローラ5との間でポリエステル繊維の二
次転移点以下の温度で加撚状態で延伸される。ま
ず、ポリエステル繊維の二次転移点以下の温度好
ましくは製造上特別な設備を要しない室温以上で
延伸される。なお、ポリエステル繊維の二次転移
点の測定は示差熱分析装置によつて行なわれる。
通常、紡糸された原糸は、内部の分子運動が可能
となるポリエステル繊維の二次転移点Tg℃より
高い温度で有効に延伸され、工業的に可能な速度
で延伸されるためには加熱が必要とされ、これに
よつて延伸点も固定され均斉な延伸が行なわれる
ことになる。ところが、二次転移点以下の温度す
なわち常温での延伸は、一部の配向とともに一次
構造の破壊と新たな構造の部分的再形成をひき起
し、部分的に収縮の大きい糸にする。本発明にお
いては、この常温延伸による不安定な構造破壊
と、加撚状態で延伸し撚の構造からの糸長差と与
え、構成フイラメント間に微少な常温延伸差を与
えて、フイラメントに不規則性を与え絹に似たよ
うな適度なふくらみとドレープ性とを与えるもの
である。 つぎに、加撚状態で延伸されることが必要であ
る。ここに加撚状態とは、好ましくは特殊嵩高糸
の総繊度(デニール)をDとして撚数(T/M)
×√で与えられる撚係数が25000以上の状態を
いう。そして加撚は具体的には例えば撚掛装置4
で与えられる。この撚掛装置としては、三軸デイ
スク型仮撚装置またはベルト式撚掛装置のよう
な、それ自体に糸送り効果があり、解撚ゾーンよ
り加撚ゾーンの張力が大きくなるものが好まし
い。本発明においては撚のかかつた構造状態でポ
リエステル繊維の二次転移点以下の温度で延伸が
行なわれることが肝要である。すなわち、フイラ
メントに撚をかけると撚糸の外層に位置したフイ
ラメントには張力がかかり、内層に位置し芯とな
つたフイラメントは座屈をうけ、通常完成糸の場
合には張力のかかつた外層糸が内層へ入りこもう
とする、いわゆる内外層のマイグレーシヨンが起
る。しかし、定荷重伸長領域をもつ未延伸糸で
は、外層に位置するフイラメントは延伸され、マ
イグレーシヨンが起きがたい。そこで、加撚状態
で常温延伸が行なわれると、撚糸の微少区間にあ
るフイラメント間で一次構造破壊の程度が異な
り、微少区間で収縮が異なるとともに外層のフイ
ラメントと内層のフイラメント間で微少糸長差と
繊差維(デニール)とが惹起される。この結果、
本発明方法による特殊嵩高糸は第2図に示すごと
く細かいループSと大きなループLとが混在した
構造をなし、適度なふくらみとドレープ性とを有
するものとなり、この糸を使つて織物とした場合
には通常のフイラメントによるものより適度のふ
くらみのある織物が得られる。 さらに、延伸倍率は1.3〜4.5倍とするのが好ま
しい。これは、一次構造の破壊と新たな構造の部
分的再形成とを効果的にひき起すためである。 次に、本発明方法の作用を簡単に述べると、ポ
リエステル繊維の未延伸糸Yは、パツケージ1か
ら解舒され、ガイド2を通つてフイードローラ3
に供給され、フイードローラ3とデリベリローラ
5との間で撚掛装置4により加撚され、加撚状態
で適性延伸倍率でTg℃以下の温度で延伸され、
大きなループLと細かいループSとが1本のフイ
ラメントの長手方向に混在した特殊嵩高糸Y′が
製造され、パツケーシ7に形成される。ここに、
6はスネールワイヤである。 このように、本発明方法によれば織物にしたと
きに適度なふくらみとドレープ性の風合とを有
し、ボテ感のない絹に近いふくらみのある特殊嵩
高糸が容易に製造され、この特殊嵩高糸を用いた
負帛は絹に近いような風合を有するという顕著な
な効果が奏される。 実施例 1 図の撚掛装置付きの仮撚機を用いてポリエステ
ル繊維の半延伸糸(△n=38×10-3、125デニー
ル/36フイラメント)を下記の条件で常温延伸し
て75デニール/36フイラメントの特殊嵩高糸を製
造した。 条件:デリペリローラ5の紡出速度…500M/
min、仮撚数…3000T/M、延伸倍率…1.7倍、
延伸時の温度…25℃ この特殊嵩高糸を、緯に用いて経98本/in、緯
85本/in.のタフタを製織して4枚重ねで生地厚
みを測定してその厚みと風合とを測定して表に示
した。なお、比較のために通常のポリエステル繊
維の延伸糸(75デニール/36フイラメント)を
経、緯に通常のポリエステル繊維の仮撚加工糸
(75デニール/36フイラメント、仮撚数;
3000T/M)を経緯に用いて経95本/in、緯85
本/in.のタフタを製織して同じく4枚重ねでの
生地厚みと風合と測定した。
The present invention relates to a method for producing a special bulky yarn that has appropriate bulge and drapability on a woven fabric, and provides a texture that does not feel loose. Polyester fiber filaments are usually difficult to use as is for general clothing.
This is because woven fabrics using bare and fine filaments have a rough and hard texture. Therefore, filamentary amounts of polyester fibers are mainly used for applications such as linings or umbrella fabrics. Therefore, in order to develop filaments of polyester fibers into versatile uses such as clothing, bulk processing such as false twisting processing has been conventionally performed. However, although bulky processing such as false twisting produces yarn with a soft texture, this yarn has the disadvantages of having a loose feel and lacking drapability. Some people dislike it because it lacks fashionability. The present invention eliminates the drawbacks of such polyester fiber filaments or their false twisted yarns, and has silk-like fluff, elasticity, warm feel, etc., and has appropriate fullness and drapability. The object of the present invention is to provide a method for manufacturing special bulky yarn having the following characteristics. To this end, the present invention has the following configuration. That is, the present invention provides a method for producing a special bulky yarn, which is characterized in that an undrawn yarn of polyester fiber having a birefringence index of 80×10 -3 or less is stretched at a temperature of Tg° C. or lower and in a twisted state. be. Here, Tg°C is the secondary transition point of the polyester fiber. The present invention will be explained in detail below based on the drawings. The drawings are for illustrative purposes only, and changes may be made without departing from the spirit of the invention. FIG. 1 is a schematic front view of an apparatus used to carry out the present invention, and FIG. 2 is a schematic side view of a special bulky yarn obtained by the present invention. In FIG. 1, Y is an undrawn polyester fiber having a birefringence of 80×10 −3 or less. This undrawn yarn is used in a broad sense including semi-drawn yarn. In this case, the polyester fiber is one in which 85 mol% or more of its repeating units are composed of ethylene terephthalate, and the main target is polyester fiber manufactured from terephthalic acid or its functional derivative and ethylene glycol, but the acid component 1 part of terephthalic acid or a functional derivative thereof up to less than 15 mol % of at least one difunctional acid selected from e.g. isophthalic acid, adipic acid, sebacic acid or their functional derivatives etc. It also includes copolymerized polyester fibers. The birefringence index of the undrawn yarn must be 80×10 -3 or less. Kedashi, 80
This is because if it exceeds ×10 -3 , migration tends to occur in the twisted state, and it becomes difficult to cause a difference in shrinkage between the fibers, making it impossible to obtain the desired special bulky yarn. Preferably it is 5×10 −3 or more. This is to take into consideration the projection, workability, and texture. The undrawn yarn Y of the polyester fiber is drawn in a twisted state between the feed roller 3 and the delivery roller 5 at a temperature below the secondary transition point of the polyester fiber. First, the polyester fiber is drawn at a temperature below the secondary transition point, preferably above room temperature, which does not require special equipment for production. Note that the measurement of the secondary transition point of the polyester fiber is performed using a differential thermal analyzer.
Normally, the spun yarn is effectively drawn at a temperature higher than the secondary transition point Tg°C of the polyester fiber, which allows for internal molecular movement, and heating is required to draw it at an industrially possible speed. This also fixes the stretching point and ensures uniform stretching. However, stretching at a temperature below the secondary transition point, that is, at room temperature, causes destruction of the primary structure and partial reformation of a new structure as well as partial orientation, resulting in yarns that partially shrink. In the present invention, this unstable structural destruction caused by drawing at room temperature and the difference in yarn length from the twisted structure by drawing in the twisted state are applied, and a minute difference in room temperature drawing is given between the constituent filaments to make the filaments irregular. It gives the fabric a moderate amount of fullness and drapability similar to silk. Next, it is necessary to stretch it in a twisted state. Here, the twisted state preferably refers to the total fineness (denier) of the special bulky yarn as D and the number of twists (T/M).
A state in which the twist coefficient given by ×√ is 25,000 or more. Specifically, for example, the twisting device 4
is given by The twisting device is preferably one that has a yarn feeding effect itself, such as a triaxial disk type false twisting device or a belt type twisting device, and that the tension in the twisting zone is greater than that in the untwisting zone. In the present invention, it is important that the stretching is carried out in a twisted structural state at a temperature below the secondary transition point of the polyester fiber. In other words, when the filaments are twisted, tension is applied to the filaments located in the outer layer of the twisted yarn, and the core filament located in the inner layer is buckled, and normally in the case of finished yarn, the outer layer yarn under tension is A so-called migration between the inner and outer layers occurs, in which the inner layer tries to penetrate into the inner layer. However, in an undrawn yarn having a constant load elongation region, the filaments located in the outer layer are drawn and migration is difficult to occur. Therefore, when drawing is performed at room temperature in a twisted state, the degree of primary structure destruction differs between the filaments in minute sections of the twisted yarn, shrinkage differs in minute sections, and there is a minute difference in yarn length between the filaments in the outer layer and the filaments in the inner layer. and fibers (denier) are induced. As a result,
The special bulky yarn produced by the method of the present invention has a structure in which fine loops S and large loops L are mixed together, as shown in Fig. 2, and has appropriate bulge and drapability, and when this yarn is used to make a fabric. With this method, a fabric with a moderate amount of fullness can be obtained than that made with ordinary filament. Furthermore, the stretching ratio is preferably 1.3 to 4.5 times. This is to effectively cause destruction of the primary structure and partial reformation of a new structure. Next, to briefly describe the operation of the method of the present invention, the undrawn polyester fiber yarn Y is unrolled from the package 1, passes through the guide 2, and is delivered to the feed roller 3.
is fed, twisted by the twisting device 4 between the feed roller 3 and the delivery roller 5, and stretched in the twisted state at an appropriate stretching ratio at a temperature below Tg°C,
A special bulky yarn Y' in which large loops L and small loops S are mixed in the longitudinal direction of one filament is manufactured and formed into a package 7. Here,
6 is a snail wire. As described above, according to the method of the present invention, it is possible to easily produce a special bulky yarn that has an appropriate amount of bulge and drapey texture when woven into a fabric, and has a bulge similar to silk without a loose feeling. Clothes using bulky yarn have a remarkable effect of having a texture similar to silk. Example 1 A semi-drawn polyester fiber yarn (△n=38×10 -3 , 125 denier/36 filament) was drawn at room temperature under the following conditions using a false twisting machine equipped with a twisting device as shown in the figure to give a 75 denier yarn. A special bulky yarn with 36 filaments was manufactured. Conditions: Spinning speed of delivery roller 5...500M/
min, number of false twists...3000T/M, stretching ratio...1.7 times,
Temperature during stretching...25℃ This special bulky yarn was used for the weft with a warp of 98 yarns/in and a weft of
Weaving 85 pieces/in. of taffeta and measuring the fabric thickness by stacking 4 layers, the thickness and texture were measured and shown in the table. For comparison, a drawn yarn (75 denier/36 filaments) of ordinary polyester fibers and a false twisted yarn (75 denier/36 filaments, number of false twists) of ordinary polyester fibers were used in the warp and weft.
3000T/M) is used for the warp and warp of 95 lines/in and latitude of 85
A book/in. of taffeta was woven and the thickness and texture of the 4-ply taffeta were measured.

【表】 表中で、生地厚みの測定は、ダイヤルシツクネ
スゲージ(尾崎製作所製)で行なつた。そして風
合は官能検査によつた。この表から明らかなよう
に、本発明に係る特殊嵩高糸使いの織物は、絹に
近い適度のふくらみとドレープ性を有し、良好な
風合を示した。これも、フイラメントの長手方向
に細かいループと大きさループとが混在し、且つ
長手方向の微少収縮差によつて織物のふくらみが
発現したものと思われた。 実施例 2 実施例1と同じポリエステル繊維の半延伸糸を
用いて延伸の際の温度を種々変化させて特殊嵩高
糸を下記の条件で製造し、その糸状を観察した。
なお、ここで用いたポリエステル繊維の二次転移
点Tg℃は72℃であつた。 条件:デリベリローラ5の紡出速度…500M/
min、仮撚数……3000T/M延伸倍率…1.7 ついで、これらの特殊嵩高糸を緯糸に、50デニ
ール/36フイラメントのマルチフイラメント糸を
経糸に用い、経密度109本/in.緯密度96本/in.で
タフタを製織し、仕上後の織物風合を官能検査で
評価したところ、下記のデータが得られた。
[Table] In the table, the fabric thickness was measured using a dial thickness gauge (manufactured by Ozaki Seisakusho). The texture was determined through a sensory test. As is clear from this table, the woven fabric using the special bulky yarn according to the present invention had appropriate fullness and drape properties similar to those of silk, and exhibited a good texture. This also seemed to be due to the presence of a mixture of small loops and large loops in the longitudinal direction of the filament, and the swelling of the fabric due to minute differences in shrinkage in the longitudinal direction. Example 2 A special bulky yarn was produced under the following conditions using the same semi-drawn polyester fiber yarn as in Example 1 and varying the temperature during stretching, and its filament shape was observed.
Note that the secondary transition point Tg°C of the polyester fiber used here was 72°C. Conditions: Delivery roller 5 spinning speed...500M/
min, number of false twists...3000T/M stretching ratio...1.7 Next, these special bulky yarns were used as weft yarns, and 50 denier/36 filament multifilament yarns were used as warp yarns, warp density 109 yarns/in. weft density 96 yarns. When taffeta was woven at 1/in. and the texture of the finished fabric was evaluated using a sensory test, the following data were obtained.

【表】 表から明らかなようにポリエステル繊維の二次
転移点Tg℃以下の場合には、特殊嵩高糸は、細
かいループと大きなループが混在したものとな
り、織物風合も仮撚加工糸状のボテ感のないわず
かなふくらみと柔らかさとを有するものであつ
た。
[Table] As is clear from the table, when the secondary transition point of polyester fiber is below Tg°C, the special bulky yarn will have a mixture of small loops and large loops, and the texture of the fabric will also be like a false-twisted thread. It had a slight bulge and softness without any feeling.

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

第1図は本発明を実施するのに用いた装置の略
正面図、第2図は本発明によつて得られた特殊嵩
高糸の略側面図である。 Y……未延伸糸、1……パツケージ、3……フ
イードローラ、4……撚掛装置、5……デリベリ
ローラ、S……細かいループ、L……大きなルー
プ、Y′……特殊嵩高糸。
FIG. 1 is a schematic front view of an apparatus used to carry out the present invention, and FIG. 2 is a schematic side view of a special bulky yarn obtained by the present invention. Y... undrawn yarn, 1... package cage, 3... feed roller, 4... twisting device, 5... delivery roller, S... fine loop, L... large loop, Y'... special bulky yarn.

Claims (1)

【特許請求の範囲】 1 複屈折率が80×10-3以下であるポリエステル
繊維の未延伸糸をTg℃以下の温度で且つ加撚状
態で延伸することを特徴とする特殊嵩高糸の製造
法。 〔但し、Tg℃:ポリエステル繊維の二次転移
点〕
[Claims] 1. A method for producing a special bulky yarn, which comprises stretching an undrawn polyester fiber yarn having a birefringence index of 80×10 -3 or less at a temperature of Tg° C. or lower and in a twisted state. . [However, Tg°C: secondary transition point of polyester fiber]
JP295183A 1983-01-11 1983-01-11 Production of special bulky yarn Granted JPS59130336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP295183A JPS59130336A (en) 1983-01-11 1983-01-11 Production of special bulky yarn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP295183A JPS59130336A (en) 1983-01-11 1983-01-11 Production of special bulky yarn

Publications (2)

Publication Number Publication Date
JPS59130336A JPS59130336A (en) 1984-07-26
JPH0160568B2 true JPH0160568B2 (en) 1989-12-25

Family

ID=11543675

Family Applications (1)

Application Number Title Priority Date Filing Date
JP295183A Granted JPS59130336A (en) 1983-01-11 1983-01-11 Production of special bulky yarn

Country Status (1)

Country Link
JP (1) JPS59130336A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112020000761T5 (en) 2019-03-25 2021-10-28 Omron Healthcare Co., Ltd. DEVICE FOR MEASURING BIOMETRIC INFORMATION, TERMINAL AND SYSTEM FOR MEASURING BIOMETRIC INFORMATION

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62156334A (en) * 1985-12-26 1987-07-11 帝人株式会社 Silk like organdy fabric
JPH01183540A (en) * 1988-01-18 1989-07-21 Toray Ind Inc Bulky yarn having high shrinkage and production thereof
JPH01183536A (en) * 1988-01-19 1989-07-21 Toray Ind Inc Combined filament yarn having difference in contraction and production thereof
TW480298B (en) 2000-03-24 2002-03-21 Toray Industries Rough-twist processed yarn and its manufacturing method and its manufacturing device

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JPS51123317A (en) * 1975-04-18 1976-10-28 Teijin Ltd A process for producing textured polyester filaments
JPS55163229A (en) * 1979-06-01 1980-12-19 Tore Textile Production of spun like processed yarn

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51123317A (en) * 1975-04-18 1976-10-28 Teijin Ltd A process for producing textured polyester filaments
JPS55163229A (en) * 1979-06-01 1980-12-19 Tore Textile Production of spun like processed yarn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112020000761T5 (en) 2019-03-25 2021-10-28 Omron Healthcare Co., Ltd. DEVICE FOR MEASURING BIOMETRIC INFORMATION, TERMINAL AND SYSTEM FOR MEASURING BIOMETRIC INFORMATION

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JPS59130336A (en) 1984-07-26

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