JPH07157935A - Soft conjugate yarn excellent in bulkiness and abrasion resistance - Google Patents

Soft conjugate yarn excellent in bulkiness and abrasion resistance

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Publication number
JPH07157935A
JPH07157935A JP30815493A JP30815493A JPH07157935A JP H07157935 A JPH07157935 A JP H07157935A JP 30815493 A JP30815493 A JP 30815493A JP 30815493 A JP30815493 A JP 30815493A JP H07157935 A JPH07157935 A JP H07157935A
Authority
JP
Japan
Prior art keywords
yarn
fiber
fiber bundle
fibers
abrasion resistance
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
JP30815493A
Other languages
Japanese (ja)
Inventor
Koji Takinami
浩治 瀧波
Mitsuo Tanida
光雄 谷田
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 JP30815493A priority Critical patent/JPH07157935A/en
Publication of JPH07157935A publication Critical patent/JPH07157935A/en
Pending legal-status Critical Current

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  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

PURPOSE:To obtain soft conjugate yarn excellent in abrasion resistance and bulkiness. CONSTITUTION:This yarn is obtained by mutually wrapping a fiber bundle (A) in which staple fiber is combined with filaments having >=10% shrinkage factor in boiling water and a fiber bundle (B) composed of only the staple fiber. The constituent ratio [(A)/(B)] of the fiber bundles (A) to (B) is within the range of 0.4-2.3 expressed in terms of weight ratio and low twist is applied thereto.

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、衣料用の複合糸、さら
に詳しくは、ソフトでバルキー性及び耐摩耗性に優れた
複合糸に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite yarn for clothes, and more particularly to a composite yarn which is soft and has excellent bulkiness and abrasion resistance.

【0002】[0002]

【従来の技術】従来、衣料用の織物、編物に供するソフ
トな風合いを有する紡績糸として、低撚化の方向での検
討が種々なされているものの、強力、糸品質の低下、操
業性の不安定等が大きな課題として残り、ソフトな風合
いの糸を得るまでには至っていないのが現状である。そ
こで、原料の特徴を生かす試みとしてファインデニール
使いの混紡糸、ファインデニールのステープル繊維が鞘
部、フィラメント糸が芯部を構成するコアヤーン、さら
には異収縮ファイバーや高収縮ファイバーを用いた複合
糸などがあるが、いずれも撚による拘束力により十分に
ファイバーの特徴を引き出すことは困難であった。そし
て、紡績糸と水溶性ビニロン糸との撚糸を解撚後水溶性
ビニロン糸を溶解した糸があるが、この糸は、非常にコ
ストが高くなり、用途も高級品に限定されるという難点
を有し、一部で用いられているにすぎない。
2. Description of the Related Art Conventionally, as a spun yarn having a soft texture to be used for woven fabrics and knits for clothing, various studies have been made in the direction of reducing the twist, but the tenacity, the deterioration of the yarn quality and the lack of operability are Stability remains a major issue, and the current situation is that a yarn with a soft texture has not yet been obtained. Therefore, as an attempt to make full use of the characteristics of the raw materials, a mixed yarn using fine denier, a core yarn in which fine denier staple fibers form a sheath portion and a filament yarn forms a core portion, and a composite yarn using different shrinkage fibers or high shrinkage fibers, etc. However, in each case, it was difficult to sufficiently bring out the characteristics of the fiber due to the binding force due to the twist. Then, there is a yarn in which the water-soluble vinylon yarn is melted after untwisting the twisted yarn of the spun yarn and the water-soluble vinylon yarn, but this yarn has a very high cost and its use is limited to high-grade products. It has only been used in part.

【0003】[0003]

【発明が解決しようとする課題】本発明は、前述のよう
な従来の複合糸の欠点を解消した新規なソフトでバルキ
ー性及び耐摩耗性に優れ、毛羽が少なく糸条の均斉度が
良好なこれまでの複合糸では得られなかった性能を有す
る高品位の複合糸を提供するものである。
DISCLOSURE OF THE INVENTION The present invention is a novel soft material which solves the above-mentioned drawbacks of conventional composite yarns, is excellent in bulkiness and abrasion resistance, has less fluff, and has a good yarn uniformity. It is intended to provide a high-quality composite yarn having performance that cannot be obtained by the conventional composite yarn.

【0004】[0004]

【課題を解決するための手段】本発明は、前記課題を解
決するために次の手段をとるものである。すなわち、本
発明は、短繊維と沸水収縮率が10%以上のフィラメン
トとが混繊した繊維束Aと、短繊維のみからなる繊維束
Bとが互いに巻きついてなる複合糸であって、該繊維束
Aと該繊維束Bとの構成比A/Bが重量比で0.4〜
2.3の範囲にあり、撚係数が1.5〜2.8の実撚が
掛けられていることを特徴とするソフトで耐摩耗性の優
れた複合糸である。
The present invention adopts the following means in order to solve the above problems. That is, the present invention is a composite yarn in which a fiber bundle A in which short fibers and filaments having a boiling water shrinkage ratio of 10% or more are mixed and a fiber bundle B composed of only short fibers are wound around each other. The composition ratio A / B of the bundle A and the fiber bundle B is 0.4-by weight ratio.
It is a composite yarn that is in the range of 2.3 and has a twist coefficient of 1.5 to 2.8 and is applied with a real twist, and is soft and has excellent abrasion resistance.

【0005】以下に本発明を詳細に説明する。短繊維と
沸水収縮率が10%以上のフィラメントとが混繊した繊
維束Aを用いるのは、フィラメントと短繊維との相容
性、抱合性を向上させるため及びバルキー性を出すため
である。また、繊維束Aと短繊維のみからなる繊維束B
とが互いに巻きついているのは、耐摩耗性をより一層向
上させるためである。
The present invention will be described in detail below. The reason why the fiber bundle A in which short fibers and filaments having a boiling water shrinkage ratio of 10% or more are mixed is used is to improve the compatibility and conjugation between the filaments and the short fibers and to provide bulkiness. Also, a fiber bundle B consisting of the fiber bundle A and short fibers only
And are wound around each other in order to further improve the wear resistance.

【0006】さらに、前記繊維束Aと前記繊維束Bとの
構成比A/Bが重量比で0.4〜2.3の範囲になけれ
ばならない。これは、耐摩耗性の向上と毛羽の少ない糸
条の均斉度を得るためであり、0.4未満になると耐摩
耗性の低下となって好ましくなく、他方、2.3をこえ
ると毛羽の多い、糸条の均斉度の低下となって好ましく
ない。
Further, the composition ratio A / B of the fiber bundle A and the fiber bundle B must be in the range of 0.4 to 2.3 in weight ratio. This is to improve the wear resistance and to obtain the uniformity of the yarn with less fluff, and when it is less than 0.4, the wear resistance is deteriorated, which is not preferable, while when it exceeds 2.3, the fluff is reduced. It is not preferable because the uniformity of the yarns is often decreased.

【0007】また、フィラメントの繊維束Aにおける割
合は、20〜80重量%が好ましい。20重量%未満で
は、抱合性、耐摩耗性が低下しやすく、他方80重量%
をこえると、フィラメントと短繊維との相容性が低下す
ること、及びフィラメントの開繊斑の影響を大きく受け
て、毛羽斑や糸条の均斉度の低下が生じるので好ましく
ない。
The proportion of the filaments in the fiber bundle A is preferably 20 to 80% by weight. If it is less than 20% by weight, the conjugation property and the abrasion resistance are likely to be lowered, while the amount of 80% by weight
If it exceeds, the compatibility between the filament and the short fiber is deteriorated, and it is greatly affected by the spread of filaments, which causes the fluff and the uniformity of the yarn to be reduced, which is not preferable.

【0008】次に、加撚時の撚係数Kはインチ方式で
1.5〜2.8が好ましい。これ以外は、糸の品質に関
してはソフトな風合いの糸が得られなくなり好ましくな
い。また、フィラメントの収縮を許容してバルキーを出
すためである。
Next, the twisting coefficient K during twisting is preferably 1.5 to 2.8 in inches. Other than this, with respect to the quality of the yarn, a yarn having a soft texture cannot be obtained, which is not preferable. Further, it is for allowing the shrinkage of the filament to produce a bulky.

【0009】なお、ここで繊維束A、繊維束Bに使用さ
れる短繊維としては、綿繊維、麻繊維などの天然繊維、
ポリノジック繊維などの再生繊維、半合成繊維、ポリエ
ステル系繊維、ポリアミド系繊維、ポリアクリルニトリ
ル系繊維などの合成繊維等のステープルが挙げられる。
短繊維の太さは、3デニール以下が好ましく、さらに2
デニール以下が特に好ましく、短繊維の平均繊維長は、
28〜44mmが好ましい。
The short fibers used in the fiber bundles A and B are natural fibers such as cotton fibers and hemp fibers,
Examples include staples such as recycled fibers such as polynosic fibers, semi-synthetic fibers, polyester fibers, polyamide fibers, and synthetic fibers such as polyacrylonitrile fibers.
The thickness of the short fibers is preferably 3 denier or less, and further 2
Denier or less is particularly preferable, and the average fiber length of the short fibers is
28-44 mm is preferable.

【0010】また、繊維束Aに含まれるフィラメントと
して、ポリエステル系繊維、ポリアミド系繊維、ポリア
クリルニトリル系繊維などの全てのフィラメント素材が
対象となりうる。該フィラメントの沸水収縮率(%)は
10%以上、好ましくは10〜60%、さらに好ましく
は10〜45%、特に15〜30%が良い。甘撚と相俟
ってバルキーを出すためである。フィラメントの太さと
していは、0.2〜4.0デニールのものが好ましく、
0.2デニール未満になると耐摩耗性が低下し、逆に
4.0デニールをこえると開繊不良による毛羽斑や風合
いが硬くなりすぎるという欠点が生じやすい。
As the filaments contained in the fiber bundle A, all filament materials such as polyester fibers, polyamide fibers, polyacrylonitrile fibers, etc. can be used. The boiling water shrinkage (%) of the filament is 10% or more, preferably 10 to 60%, more preferably 10 to 45%, and particularly preferably 15 to 30%. This is to give the bulky in combination with the sweet twist. The filament thickness is preferably 0.2 to 4.0 denier,
If it is less than 0.2 denier, abrasion resistance is lowered, and if it exceeds 4.0 denier, defects such as fluffiness and texture due to poor opening tend to be too hard.

【0011】次に、本発明の製造法について説明する。
まず、図1において2本の短繊維集合体例えば粗糸ボビ
ンP1、P2から解舒された粗糸1、2を一定の間隔D
好ましくは4〜10mmの間隔をあけて精紡機のバック
ローラ4に供給する。これは、繊維の平行度を上げて毛
羽の減少を図り、同時に耐摩耗性の向上を図るためであ
る。なお、4mm未満であると、繊維の平行度を上げ且
つ互いの繊維束同志の巻付き加撚による耐摩耗性の向上
という効果が小さくなり、逆に10mm以上をこえると
紡出時における糸切れが多くなり、可紡性が悪くなるの
で好ましくない。
Next, the manufacturing method of the present invention will be described.
First, in FIG. 1, the rovings 1 and 2 unwound from two short fiber aggregates, for example, roving bobbins P1 and P2, are separated by a constant distance D.
It is preferably supplied to the back roller 4 of the spinning machine at intervals of 4 to 10 mm. This is to increase the parallelism of the fibers to reduce the fluff and at the same time to improve the abrasion resistance. If it is less than 4 mm, the effect of increasing the parallelism of the fibers and improving the wear resistance by wrapping and twisting the fiber bundles of each other becomes small. On the contrary, if it exceeds 10 mm, the yarn breaks during spinning. And the spinnability deteriorates, which is not preferable.

【0012】ついでバックローラ4〜フロントローラ9
間で併列ドラフトした後、フロントローラ9後の加撚ゾ
ーンCにおいてドラフトされた短繊維集合体を互いに加
撚する。この際、パーンP3から解舒された沸水収縮率
10%以上のマルチフィラメント糸3を開繊装置例えば
電気開繊装置10により開繊して、ドラフトされている
短繊維集合体(図1の手前)に重ね合わせて混繊する。
かくすることにより、繊維束Aと繊維束Bとが互いに巻
きついてなる複合糸が得られる。なお、開繊装置として
は、叙上の電気開繊装置のほかに緊張、弛緩法などの機
械開繊装置、空気開繊装置などがあるが、安定した開繊
が得られることから高電圧を用いた電気開繊装置が好ま
しい。5、6、7はガイド、8はセカンドローラ、11
はスネールワイヤ、12は複合糸である。
Next, the back roller 4 to the front roller 9
After parallel drafting between them, the drafted short fiber aggregates are twisted with each other in the twisting zone C after the front roller 9. At this time, the multifilament yarn 3 unwound from the pan P3 and having a boiling water shrinkage rate of 10% or more is opened by an opening device, for example, an electric opening device 10 to draft the short fiber aggregate (in front of FIG. 1). ) And mix them together.
By doing so, a composite yarn in which the fiber bundle A and the fiber bundle B are wound around each other can be obtained. As the fiber opening device, in addition to the above-mentioned electric fiber opening device, there are mechanical fiber opening devices such as tension and relaxation methods, air fiber opening devices, etc., but high voltage is used because stable fiber opening is obtained. The electric opening device used is preferred. 5, 6, 7 are guides, 8 is a second roller, 11
Is a snail wire, and 12 is a composite yarn.

【0013】[0013]

【実施例】以下に実施例にもとづいて本発明を詳細に説
明する。なお、使用した測定法は次の通りである。 強力、破断伸度:JIS L−1095−1979
(一般紡績試験法)の定速伸長型引張試験機(ツエルヴ
ェーガーウスタ社製のテンソラピッド)にてつかみ間隔
50cm、引張速度30cm/分で測定した。 毛羽:敷島紡績(株)社製のF−インデックステス
ターで1mm以上の毛羽(コ/10m)を測定した。 糸均斉度(U%):イブネステスターUT−III 型
により測定した。 抱合性(回数):抱合力を経糸抱合力試験機(蛭田
理研製)により測定した。この経糸抱合力試験機は、直
径20cmのチタン製表面の円型ドラムを80回/分で
回転させ、糸の一端を固定し、他端に70gの荷重をか
けてこのドラムに接触させ、糸が切断するまでの回転数
をあらわして抱合力の程度をあらわすものである。 染面:当該糸を天竺編みとした後、綿サイドでの片
染めとした布帛での官能評価によるものであり、非常に
良好◎、良好○、普通△、悪い×の4段階を7人で評価
し、最も多く評価された段階値で示した。 洗濯によるもやけ:当該糸を天竺編みとしたものを
10回洗濯し、その布表面の毛羽による荒れ具合いを染
面と同様の評価方法で測定した。 ソフトさ:官能評価によるものであり、非常に良好
◎、良好○、普通△、悪い×の4段階を7人で評価し、
最も多く評価された段階値で示した。 バルキ:ソフトさと同様に評価した。 保温性:ソフトさと同様に評価した。
EXAMPLES The present invention will be described in detail below based on examples. The measuring method used is as follows. Strength, elongation at break: JIS L-1095-1979
It was measured with a constant speed extension type tensile tester (Tensor Rapid manufactured by Zwelweger Worster) of (General spinning test method) at a gripping interval of 50 cm and a pulling speed of 30 cm / min. Fluff: Fluff (1/10 mm) of 1 mm or more was measured with an F-index tester manufactured by Shikishima Spinning Co., Ltd. Yarn uniformity (U%): Measured with an Ibnestestar UT-III type. Tying ability (number of times): Tying ability was measured by a warp tying ability tester (Hirata Riken). This warp binding force tester rotates a circular drum of titanium surface with a diameter of 20 cm at 80 times / min, fixes one end of the yarn, and applies a load of 70 g to the other end to bring it into contact with the drum. It represents the number of rotations until the cutting, and expresses the degree of tying force. Dyeing surface: It is based on a sensory evaluation of a piece of cloth which is dyed in plain weave on the cotton side after the yarn is knitted in plain knit, and is very good ◎, good ○, normal △, bad × by 7 people It was evaluated and indicated by the most evaluated grade value. Smear due to washing: A cloth in which the yarn was knitted with a plain cloth was washed 10 times, and the roughness of the surface of the cloth due to fluff was measured by the same evaluation method as for the dyed surface. Softness: It was based on sensory evaluation, and was evaluated by 7 people in 4 grades of very good ◎, good ○, normal Δ, and bad ×,
The most evaluated grade value is shown. Varki: It was evaluated in the same manner as the softness. Heat retention: evaluated in the same manner as softness.

【0014】実施例1 綿繊維からなる粗糸(50ゲレン/15yds)を2
本、間隔8mmをあけて夫々バックローラに供給してド
フラトゾーン(バックローラ〜フロントローラ)で42
倍のドラフトを与え、その際片方の短繊維集合体に沸水
収縮率25%のポリエステルマルチフィラメント糸(3
0d/18f)に5KVの電圧を帯電させて開繊して重
ね合わせた。ついで撚係数2.2(インチ方式)で加撚
し、フロントローラから出る2本の繊維束を互いに巻き
付けて40′S/1(英式綿番手)の紡績糸を生産し
た。なお、繊維束Aと繊維束Bとの重量比A/Bは1.
6にした。その結果を表1に示す。
Example 1 Two rovings (50 gelen / 15 yds) made of cotton fibers were used.
This is supplied to the back rollers with a space of 8 mm between them, and the Draft zone (back roller to front roller)
Double draft, with one short fiber aggregate having a boiling water shrinkage of 25% polyester multifilament yarn (3
0d / 18f) was charged with a voltage of 5 KV, opened, and superposed. Then, the yarn was twisted with a twist coefficient of 2.2 (inch type), and two fiber bundles emerging from the front roller were wound around each other to produce a spun yarn of 40'S / 1 (English cotton count). The weight ratio A / B of the fiber bundle A and the fiber bundle B was 1.
I set it to 6. The results are shown in Table 1.

【0015】[0015]

【表1】 [Table 1]

【0016】比較例1 実施例1において撚係数を3.6とし、他の条件は同じ
とした。
Comparative Example 1 In Example 1, the twist coefficient was set to 3.6, and the other conditions were the same.

【0017】従来例1 綿繊維の粗糸(100ゲレン/15yds)をドラフト
し、フロントローラ直前で沸水収縮率25%のポリエス
テルマルチフィラメント糸30d/18fに0.4g/
dの張力をかけて集束させたまま前記ドラフトしている
粗糸すなわちフリースに重ねて紡出し、撚係数3.6
(インチ方式)で加撚し、40′S/1 (英式綿番手)の
コアヤーンを製造して、同様に物性を測定し表1にあら
わした。
Conventional Example 1 Cotton fiber roving (100 gellens / 15 yds) is drafted, and 0.4 g / into polyester multifilament yarn 30d / 18f having a boiling water shrinkage of 25% immediately before the front roller.
The twisting coefficient of 3.6 was applied by superposing on the drafted roving yarn, that is, the fleece, while being applied with the tension of d and being converged.
(Inch method) was twisted to produce a 40'S / 1 (English cotton count) core yarn, and its physical properties were measured in the same manner as shown in Table 1.

【0018】表1に示す通り、本発明の複合糸はソフト
で、バルキー、耐摩耗性に優れ、毛羽が少なく糸条の均
斉度が良好なこれまでの複合糸では得られかなった性能
を有する高品位の複合糸であった。比較例1は、ソフト
に欠け、ややバルキー、保温性に欠けるものであった。
従来例1は、洗濯によるもやけ、ソフトさ、バルキー、
保温性に欠けるものであった。
As shown in Table 1, the composite yarn of the present invention is soft, has excellent bulkiness and abrasion resistance, has less fluff, and has good yarn uniformity, and has a performance that cannot be obtained by the conventional composite yarn. It was a high-quality composite yarn. Comparative Example 1 lacked in softness, was slightly bulky, and lacked heat retention.
The conventional example 1 has a mess caused by washing, softness, bulkiness,
It lacked heat retention.

【0019】[0019]

【発明の効果】本発明の複合糸は、ソフトで、バルキー
があり、抱合性、耐摩耗性に優れ、毛羽少なく、糸条が
均斉で総合的に非常に優れた性能を有する高品位なもの
であり、また、その製造法も叙上の複合糸を確実に得る
ことができる顕著な効果を奏する。
EFFECTS OF THE INVENTION The composite yarn of the present invention is of a high quality which is soft, bulky, excellent in conjugation and abrasion resistance, has little fluff, has uniform yarns, and has extremely excellent overall performance. In addition, the manufacturing method also has a remarkable effect of reliably obtaining the above-mentioned composite yarn.

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

【図1】本発明の複合糸を製造する装置の斜視図であ
る。
FIG. 1 is a perspective view of an apparatus for producing a composite yarn of the present invention.

【符号の説明】[Explanation of symbols]

1、2 粗糸 3 マルチフィラメント糸 4 バックローラ 9 フロントローラ 12 複合糸 1, 2 roving thread 3 multifilament thread 4 back roller 9 front roller 12 composite thread

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 短繊維と沸水収縮率が10%以上のフィ
ラメントとが混繊した繊維束Aと、短繊維のみからなる
繊維束Bとが互いに巻きついてなる複合糸であって、該
繊維束Aと該繊維束Bとの構成比A/Bが重量比で0.
4〜2.3の範囲にあり、撚係数が1.5〜2.8の実
撚が掛けられていることを特徴とするソフトでバルキー
性及び耐摩耗性の優れた複合糸。
1. A composite yarn in which a fiber bundle A in which short fibers and filaments having a boiling water shrinkage ratio of 10% or more are mixed and a fiber bundle B composed of only short fibers are wound around each other. The composition ratio A / B of A and the fiber bundle B is 0.
A soft, bulky and abrasion-resistant composite yarn characterized by being twisted with a real twist having a twist coefficient of 1.5 to 2.8 in the range of 4 to 2.3.
JP30815493A 1993-12-08 1993-12-08 Soft conjugate yarn excellent in bulkiness and abrasion resistance Pending JPH07157935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30815493A JPH07157935A (en) 1993-12-08 1993-12-08 Soft conjugate yarn excellent in bulkiness and abrasion resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30815493A JPH07157935A (en) 1993-12-08 1993-12-08 Soft conjugate yarn excellent in bulkiness and abrasion resistance

Publications (1)

Publication Number Publication Date
JPH07157935A true JPH07157935A (en) 1995-06-20

Family

ID=17977553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30815493A Pending JPH07157935A (en) 1993-12-08 1993-12-08 Soft conjugate yarn excellent in bulkiness and abrasion resistance

Country Status (1)

Country Link
JP (1) JPH07157935A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161227A (en) * 2004-12-09 2006-06-22 Unitika Textiles Ltd Long/short composite spun yarn and method for producing the same
JP2008248402A (en) * 2007-03-29 2008-10-16 Unitika Textiles Ltd Method for producing filament-staple fiber conjugate spun yarn
WO2009004419A1 (en) * 2007-07-02 2009-01-08 The Hong Kong Polytechnic University Method of industrially producing a yarn and the textile product thereof, and a ring spinning machine that carries the method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006161227A (en) * 2004-12-09 2006-06-22 Unitika Textiles Ltd Long/short composite spun yarn and method for producing the same
JP2008248402A (en) * 2007-03-29 2008-10-16 Unitika Textiles Ltd Method for producing filament-staple fiber conjugate spun yarn
WO2009004419A1 (en) * 2007-07-02 2009-01-08 The Hong Kong Polytechnic University Method of industrially producing a yarn and the textile product thereof, and a ring spinning machine that carries the method

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