JPH03167333A - False twisted conjugated yarn and production thereof - Google Patents

False twisted conjugated yarn and production thereof

Info

Publication number
JPH03167333A
JPH03167333A JP30654989A JP30654989A JPH03167333A JP H03167333 A JPH03167333 A JP H03167333A JP 30654989 A JP30654989 A JP 30654989A JP 30654989 A JP30654989 A JP 30654989A JP H03167333 A JPH03167333 A JP H03167333A
Authority
JP
Japan
Prior art keywords
yarn
false
elongation
filament
low
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.)
Granted
Application number
JP30654989A
Other languages
Japanese (ja)
Other versions
JP2925608B2 (en
Inventor
Masayuki Tani
谷 正幸
Katsuyuki Kasaoka
笠岡 勝行
Kenkichi Nose
能勢 健吉
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.)
Teijin Ltd
Original Assignee
Teijin Ltd
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Filing date
Publication date
Application filed by Teijin Ltd filed Critical Teijin Ltd
Priority to JP30654989A priority Critical patent/JP2925608B2/en
Publication of JPH03167333A publication Critical patent/JPH03167333A/en
Application granted granted Critical
Publication of JP2925608B2 publication Critical patent/JP2925608B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To obtain false twisted conjugated yarn, improved in heat shrinkage characteristics and excellent in hand and practicality by false twisting respective specific low-elongation and high-boiling water shrinkage filament yarn with high-elongation and low boiling water shrinkage filament yarn. CONSTITUTION:False twisted conjugated yarn obtained by subjecting low- elongation high-boiling water shrinkage filament yarn composed of polyester fiber and high-elongation and low-boiling water shrinkage filament yarn (preferably having a difference in elongation of <=50% based on that of the low- elongation filament yarn) composed of polyester fiber containing a polymer (e.g. a polyamide) (preferably in an amount so as to provide 20-90wt.% based on the total polymer) having a higher crystallization rate than that of the polyester to false twist texturing (preferably in a state in which the high-elongation filament yarn wraps around the low-elongation filament yarn), heat-setting the resultant yarn at <120 deg.C temperature and providing 5-150 interlacing points/ m thereto preferably by interlacing treatment, having <=1.36g/cm<3> average density of the constituent filaments and suitable for clothes and interiors.

Description

【発明の詳細な説明】 [産業上の利用分野1 本発明は、伸度の異なる2種以上のフィラメント糸から
なり、特に熱収縮特性が改良された低結晶性仮撚複合糸
、およびその製造方法に関するものである。
Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to a low-crystalline false-twisted composite yarn consisting of two or more types of filament yarns having different elongations and having particularly improved heat shrinkage properties, and the production thereof. It is about the method.

[従来技術とその問題点1 伸度の異なる2種以上のポリエステルフィラメント糸を
用いて、複合仮撚加工を施し、芯[2層Wi造糸を製造
する方法、およびそれによって得られる27Wtl’=
B糸については特公昭61−19733号公報をはじめ
その他の公報で多数提案されている。また、仮撚加工温
度を低温にすることによって得られる低捲縮・高沸水収
縮率特性を有する仮撚2層横造糸も、特開昭63−14
5445号公報で提案されている。
[Prior art and its problems 1 Method for producing two-layer Wi yarn, and the resulting 27 Wtl'=
Regarding B yarn, many proposals have been made in Japanese Patent Publication No. 61-19733 and other publications. In addition, a false-twisted two-layer weft yarn with low crimp and high boiling water shrinkage properties obtained by lowering the false-twisting temperature is also available in JP-A-63-14.
This is proposed in Publication No. 5445.

前者の仮撚2層構造糸においては、芯鞘構造が安定化さ
れているため、織編物の仕上工程でも、その芯鞘関係は
安定に保持され、十分なスパナイズ効果が得られる。一
方、後者の場合は、芯糸に対して鞘糸の方が沸水収縮率
が高くなり、従って織編物の仕上工程で、芯鞘構造の逆
転現象を惹起する。その結果、伸度の高い鞘糸が織編物
中では、糸の芯部になるため、鞘糸の大きな収縮で風合
がごわごわする硬いものになったり、ひざぬけ、ひじぬ
訂等の着用疲労を招き易いという問題の存在が判明した
In the former false-twisted two-layer yarn, since the core-sheath structure is stabilized, the core-sheath relationship is maintained stably even in the finishing process of the woven or knitted fabric, and a sufficient spanizing effect can be obtained. On the other hand, in the latter case, the boiling water shrinkage rate of the sheath yarn is higher than that of the core yarn, thus causing an inversion phenomenon of the core-sheath structure in the finishing process of the woven or knitted fabric. As a result, the sheath yarn with high elongation becomes the core of the yarn in woven and knitted fabrics, and the large shrinkage of the sheath yarn can result in a stiff and stiff texture, and fatigue caused by wear such as knee slippage and elbow wrinkles. It has been found that there is a problem in that it can easily lead to

そして、この問題に対処するため、芯糸に高収縮性ポリ
エステルを用いた2層楕造仮撚加工糸が特開平1−15
6536号公報に提案された。しかし、現実には収縮率
の高い鞘糸ないし側糸以上に芯糸を収縮させることは困
難であって、本質的な解決手段とはならなかった。
In order to deal with this problem, a two-layer oval false twisted yarn using high shrinkage polyester as the core yarn was developed in Japanese Patent Application Laid-open No. 1-155.
It was proposed in Publication No. 6536. However, in reality, it is difficult to shrink the core yarn more than the sheath yarn or side yarn, which has a high shrinkage rate, and this has not been an essential solution.

[発明の目的] 本発明の目的は、前記低温仮撚加工された複合仮撚糸の
芯絹糸の熱収縮特性を改良し、鞘糸の沸水収縮率を芯糸
の沸水収縮率よりも低くすることにより、布帛の風合が
仕上工程でごわごわに硬くなることがなく、しかも実用
性能に優れた仮撚複合糸を提供することにある。
[Object of the Invention] The object of the present invention is to improve the heat shrinkage characteristics of the core silk yarn of the composite false twisted yarn subjected to the low temperature false twisting process, and to make the boiling water shrinkage rate of the sheath yarn lower than that of the core yarn. The object of the present invention is to provide a false-twisted composite yarn in which the texture of the fabric does not become stiff during the finishing process and has excellent practical performance.

[発明の横戒] 本発明者らは、上記の目的を達成せんとして鋭意研究し
た結果、高伸度糸をt,%3成するポリエステルに、1
20℃以下の温度において該ポリエステルよりも結晶化
速度の早いポリマーを複合させるとき、該高伸度糸の収
縮率が低下することを知り、本発明に到達した。
[Lateral precepts of the invention] As a result of intensive research in order to achieve the above object, the present inventors found that a polyester comprising high elongation yarn of t.%3,
The present invention was achieved based on the finding that when a polymer having a faster crystallization rate than the polyester is combined at a temperature of 20° C. or lower, the shrinkage rate of the high elongation yarn decreases.

かくして、本発明によれば、伸度の異なる2種以上のフ
ィラメント糸からなる仮撚複合糸であって、該複合糸を
構成する全フィラメントの平均密度が1. 36g /
 c+++’以下であって、低伸度側のフィラメント糸
はポリエステル繊維からなり、高伸度側のフィラメント
糸には120℃以下での結晶化温度がポリエステルより
も早いボリマーを複合したポリエステル繊維からなり、
かつ高伸度側フィラメント糸の沸水収縮率が低伸度側フ
ィラメント糸の沸水収縮率より低いことを特徴とする仮
撚複合糸、および伸度の異なる2種以上のフィラメント
糸を引揃えて、120℃未満の温度で仮撚加工を施すに
際し、低伸度側のフィラメント糸にはポリエステル繊維
を用い、高伸度側のフィラメント糸には、120℃以下
での結晶化温度がポリエステルよりも早いポリマーを複
合したポリエステル繊維を用いることを特徴とする仮撚
複合糸の製造方法が提供される。
Thus, according to the present invention, there is provided a false twisted composite yarn consisting of two or more types of filament yarns having different elongations, wherein the average density of all the filaments constituting the composite yarn is 1. 36g/
c+++' or less, the filament yarn on the low elongation side is made of polyester fiber, and the filament yarn on the high elongation side is made of polyester fiber composited with a polymer whose crystallization temperature is lower than polyester at 120 ° C. ,
and a false twisted composite yarn characterized in that the boiling water shrinkage rate of the filament yarn on the high elongation side is lower than the boiling water shrinkage rate of the filament yarn on the low elongation side, and two or more types of filament yarns with different elongations are arranged, When performing false twisting at a temperature below 120°C, use polyester fiber for the filament yarn on the low elongation side, and use polyester fiber for the filament yarn on the high elongation side, whose crystallization temperature at 120°C or less is faster than polyester. Provided is a method for producing a false-twisted composite yarn characterized by using polyester fiber composited with a polymer.

本発明で用いるポリエステルとしては、ポリエチレンテ
レフタレートが最適であるが、ボリブチl/ンテレフタ
レートなどでもさしつかえない。また、イソフタル酸や
スルホン酸金属塩基などを第′−3戒分とする共重合ポ
リエステルでもさしつかえない。更に酸化チタンや硫酸
バリウムなどの艶消剤を含んでいてもよいし、シリカの
ような無機物を含んでいてもよい。他方、本発明で言う
、“120℃以下での結晶化速度がポリエステルよりも
早いボリマー”としては、ポリアミド(例えばナイロン
6やナイロン6・6〉,ポリエチレン,ポリプロピレン
およびポリブチレンテレフタレート等が好ましく、これ
らポリマーは酸化チタン等の艶消剤などの無機物粒子を
含んでいてもよい。
As the polyester used in the present invention, polyethylene terephthalate is most suitable, but polybutyl/nterephthalate and the like may also be used. Further, copolymerized polyesters containing isophthalic acid, sulfonic acid metal bases, etc. as the '-3' component may also be used. Furthermore, it may contain a matting agent such as titanium oxide or barium sulfate, or may contain an inorganic substance such as silica. On the other hand, in the present invention, the "polymer whose crystallization rate is faster than polyester at 120°C or less" is preferably polyamide (for example, nylon 6 or nylon 6.6), polyethylene, polypropylene, polybutylene terephthalate, etc. The polymer may also contain inorganic particles such as matting agents such as titanium oxide.

尚、ポリブチレンテレフタレートの場合、これを複合さ
せる相手の“ポリエステル”としては、当然ポリブチレ
ンテレフタレート以外のポリエステルを採用する。特に
ポリブチレンテレフタレートとしては、3.5−ジカル
.ボメトキシスルホン酸ソーダのような化合物を共重合
したものはアルカリ溶解性が向上するので好ましく用い
られる。
In the case of polybutylene terephthalate, the "polyester" with which it is composited is naturally a polyester other than polybutylene terephthalate. In particular, as polybutylene terephthalate, 3,5-dical. A copolymer of a compound such as sodium bomethoxysulfonate is preferably used because it improves alkali solubility.

本発明について更に詳細に説明する。The present invention will be explained in more detail.

一般に仲度の異なる2種の77Cリエステルフィラメン
ト糸を引揃えて、その結晶化温度未満の温度で仮撚加工
する場合、低伸度側のフィラメント糸からなる芯糸より
も高伸度側フィラメント糸からなる鞘糸の方が沸水収縮
率が高くなる。その理由61以下のように推察される。
In general, when two types of 77C liester filament yarns with different tensions are aligned and false twisted at a temperature below their crystallization temperature, the filament yarn on the higher elongation side is larger than the core yarn consisting of the filament yarn on the low elongation side. The boiling water shrinkage rate is higher for sheath yarns made of . The reason for this is presumed to be as follows.

即ち、低伸度側、っまり配向度の高い方のフィラメント
糸は延伸仮撚・熱固定作用により延伸されると結晶化し
て沸水収縮率が低くなる傾向があるのに対して、高伸度
側、つまり配向度の低い方のフィラメント糸は延仲仮撚
・熱固定作用を受けても、配向度の高い方の糸よりは仲
度の高いフィラメントとして留まるため、相対的には結
晶化度が低く、それ故に、沸水中に投入された時、より
大きな収縮を示すものと考えられる。
In other words, filament yarns on the low elongation side, with a high degree of tight orientation, tend to crystallize and have a low boiling water shrinkage rate when drawn by drawing false twisting and heat setting, whereas filament yarns on the low elongation side tend to have a low boiling water shrinkage rate. Even if the filament yarns on the side, that is, the filament yarns with a lower degree of orientation, are subjected to the stretching and heat-setting effects, they remain as filaments with a higher degree of alignment than the yarns with a higher degree of orientation, so their crystallinity is relatively lower. is expected to be lower, and therefore exhibit greater shrinkage when placed in boiling water.

これに対して、本発明の場合、伸度の高い側のポリエス
テルフィラメント糸に複合されている前記結晶化速度の
早いボリマーは延伸仮撚・熱固定作用を受けた際、結晶
化を起し易く、ポリアミド成分の沸水収縮率が小さくな
る。その結果、該ポリアミドは沸水収縮率の高いポリエ
ステル成分が縮むのを阻止するように作用し、鞘糸の収
縮率が芯糸のそれよりも低くなるものと考えられる。
On the other hand, in the case of the present invention, the polymer having a high crystallization rate, which is composited with the polyester filament yarn on the higher elongation side, tends to crystallize when subjected to stretching and false twisting and heat setting. , the boiling water shrinkage rate of the polyamide component becomes smaller. As a result, it is considered that the polyamide acts to prevent the polyester component having a high boiling water shrinkage rate from shrinking, and the shrinkage rate of the sheath yarn becomes lower than that of the core yarn.

ここで、“複合”とは、前記結晶化速度の早い成分を、
ポリエステルにブレンドするか、ポリエステルとコンジ
ュゲートさせることを言う。
Here, "composite" refers to the components with a high crystallization rate,
It refers to blending or conjugating with polyester.

前者の場合、ボリアミド分子鎖が凝集して、ポリエスデ
ルに対し島あるいは海を形成したものであることが必要
である。このようなフィラメント糸はポリエステルにボ
リアミドを混合して溶融紡糸することによって得られる
In the former case, it is necessary that the polyamide molecular chains aggregate to form an island or a sea with respect to the polyester. Such filament yarns are obtained by melt-spinning a mixture of polyester and polyamide.

後者の場合は、第1図(a)〜(h)に示したように周
知の貼合わせ型または海島型等とすればよい。
In the latter case, the well-known laminated type or sea-island type may be used as shown in FIGS. 1(a) to (h).

ポリエステルに混合するポリアミドの量は全ポリマー中
でポリアミドが10〜90重量%を占める割合であれば
よい。しかし、仮撚加工後の鞘糸の沸水収縮率を十分に
低くする為には、20%以上とすることがよ、り好まし
い。他方、上限は、防皺性等の機能性を確保する点から
80%以下とすることがより好ましい。尚、第1図にお
いて、通常は斜線部に結晶化の早いボリマーを配するの
が適当である。
The amount of polyamide to be mixed with the polyester may be such that the polyamide accounts for 10 to 90% by weight of the total polymer. However, in order to sufficiently reduce the boiling water shrinkage rate of the sheath yarn after false twisting, it is more preferable to set it to 20% or more. On the other hand, the upper limit is more preferably 80% or less in order to ensure functionality such as wrinkle resistance. In FIG. 1, it is usually appropriate to place polymers that crystallize quickly in the shaded area.

第2図は、本発明の仮撚複合糸を製造する為の一実施態
様を示すもので、低伸度側の原糸1には通常のポリエス
テル繊維を用い、高伸度側の原糸2には、結晶化速度の
早いポリマーを複合したポリエステル繊維が用いられる
。原糸1,2は引揃えられて、供給ローラ5によって、
仮撚加工域に供給され、仮撚具7によって施撚され、低
伸度側原糸1に高伸度側原糸2が巻付くような形態とな
り、ヒーター6によってその形態がセットされる。
FIG. 2 shows an embodiment for manufacturing the false twisted composite yarn of the present invention, in which normal polyester fiber is used for the yarn 1 on the low elongation side, and yarn 2 on the high elongation side. For this purpose, polyester fibers composited with polymers that have a high crystallization rate are used. The raw yarns 1 and 2 are pulled together and fed by the supply roller 5.
The fibers are supplied to the false twisting processing area and twisted by the false twisting tool 7, so that the high elongation yarn 2 is wound around the low elongation yarn 1, and this configuration is set by the heater 6.

しかしながら、この熱セットはポリエステルの結晶化開
始温度(l20℃)未満で行われ、その結果全構成フィ
ラメントの平均密度(以下、“繊維密度゛゜という)が
1j6g /cm’以下という低密度フィラメントから
構或される仮撚複合糸が得られる。
However, this heat setting is carried out below the crystallization initiation temperature of polyester (120°C), and as a result, the fiber is constructed from low-density filaments with an average density of all constituent filaments (hereinafter referred to as "fiber density") of 1j6 g/cm' or less. A false twisted composite yarn is obtained.

この工程において、仮撚複合糸に抱合性を付与して取扱
性や混繊性を向上させるために、仮撚加工前にインター
レースノズル4によって、引揃えられた原糸1.2に交
絡を付与してもよいし、また、この交絡は仮撚加工後、
巻取るまでに付与してもよい。
In this process, in order to impart cohesiveness to the false-twisted composite yarn and improve its handling and blendability, interlace nozzle 4 imparts entanglement to the aligned raw yarns 1.2 before the false-twisting process. Also, this entanglement can be done after false twisting.
It may be applied before winding up.

こ【た、得られる仮撚複合糸の熱収縮率を低減し゛ζ、
用途に適応させるために、第2ヒーター9によって熱セ
ットしてもよい。しがし、この場合も仮撚複合糸の繊維
密度が1.361/cm’以下に保たれることが肝要で
ある。
This also reduces the heat shrinkage rate of the resulting false-twisted composite yarn゛ζ,
Heat setting may be performed by a second heater 9 to adapt to the application. However, in this case as well, it is important that the fiber density of the false-twisted composite yarn is maintained at 1.361/cm' or less.

本発明において、仮撚が施されたときに、原糸1が芯と
なり、原糸2が外層部となって原糸1に巻付くように捩
り伸されるためには原糸1と2との伸度差は、少なくと
も50%は必要である。
In the present invention, when false twisting is applied, yarns 1 and 2 are required to be twisted and stretched so that yarn 1 becomes a core and yarn 2 becomes an outer layer and is wrapped around yarn 1. The difference in elongation must be at least 50%.

また、繊維密度が1.36g/cm’以下の複合糸を得
るには、原糸1は、紡糸速度3700+n/min以下
で紡糸されたいわゆる部分配向糸(POY)が適してお
り、また原糸2はそれより低い紡速で紡糸された未延伸
糸が好適である。
In addition, in order to obtain a composite yarn with a fiber density of 1.36 g/cm' or less, so-called partially oriented yarn (POY) spun at a spinning speed of 3700+n/min or less is suitable as the raw yarn 1; 2 is preferably an undrawn yarn spun at a lower spinning speed.

仮撚加工時の延伸倍率は、芯糸の伸度に応じて設定され
、伸度(倍)X0.7前後の延伸倍率が好ましい。また
ヒーター6のセット温度は、加工糸の密度を1.36g
/cm3以下に保つため、ポリエステルの結晶化開始温
度(120℃〉未満、好ましくはガラス転移温度(85
℃〉未満が採用され、更には室温(20〜30℃〉が最
も好ましい。用いる仮撚具としては、低温加工のため、
ディスク式あるいはベルト式の摩擦仮撚具が糸掛しやす
く、糸切れも少なくて適当であるが、空気式やピン方式
の仮撚具であってもよい。仮撚数は、芯糸1のまわりに
外層糸(鞘糸ないし側糸〉2を十分に捩り伸して巻付け
、捩り延伸を施すとともに糸長差を発生せしめるため、
出来るだけ多くした方がよく、仮撚数(T/m) 一(
32500 /f匪) ×aの式においてα−0.5〜
1.5が好ましく、通常はα=0.9・〜1.1位とす
るのがよい。
The stretching ratio at the time of false twisting is set according to the elongation of the core yarn, and is preferably around elongation (times) x0.7. In addition, the set temperature of heater 6 is 1.36g, which is the density of processed yarn.
/ cm
℃〉 or less, and more preferably room temperature (20 to 30℃〉).As the false twisting tool used, for low-temperature processing,
A disc-type or belt-type friction false twister is suitable because it is easy to thread the yarn and there is less yarn breakage, but an air-type or pin-type false-twister may also be used. The number of false twists is determined by sufficiently twisting and stretching the outer layer yarn (sheath yarn or side yarn) 2 around the core yarn 1, applying twisting and stretching, and generating a yarn length difference.
It is better to increase the number of false twists (T/m) as much as possible.
32500/f匪) ×α-0.5~ in the formula of a
1.5 is preferable, and usually α=0.9-1.1.

摩擦仮撚具を用いて仮撚を施す場合は、目安として解撚
張力/加撚張力の比を0、5〜1.2とすると、必要な
仮撚数が得られ、通常は0.7〜1.0を採用すればよ
い。
When performing false twisting using a friction false twisting tool, the required number of false twists can be obtained by setting the ratio of untwisting tension/twisting tension to 0.5 to 1.2 as a guide, and usually 0.7. ~1.0 may be adopted.

本発明において、仮撚加工の前または後で交絡を付与す
る場合は、10〜170個/m付与するのがよく、仮撚
前に交絡を付与する場合は仮撚あるいは延伸仮撚によっ
て交絡が消失しやすいので、30個以上の交絡点を付与
することが必要である。通常は40〜120個/mが適
当である。また、交絡は通常の空気式インターレースノ
ズルで付与するのがよい。
In the present invention, when interlacing is imparted before or after false twisting, it is preferable to impart 10 to 170 entanglements/m, and when interlacing is imparted before false twisting, entanglement is caused by false twisting or stretch false twisting. Since it is easy to disappear, it is necessary to add 30 or more interlacing points. Usually, 40 to 120 pieces/m is appropriate. Further, it is preferable to apply the interlacing using a conventional pneumatic interlace nozzle.

[発明の作用] 以上のようにして得られる複合仮撚糸は、ポリエステル
の結晶化開始温度未満で仮撚加工を施されるため、繊維
密度が結晶化開始温度以上で加工した場合の1. 38
5以上に対して1.36g/cm3以下となり、特に、
ガラス転移点以下で仮撚加工を施した場合は、繊維密度
が1.35g/Cm3以下となる。
[Operation of the invention] The composite false twisted yarn obtained as described above is subjected to false twisting at a temperature below the crystallization initiation temperature of polyester, so that the fiber density is 1. 38
5 or more, it becomes 1.36 g/cm3 or less, especially,
When false twisting is performed at a temperature below the glass transition point, the fiber density becomes 1.35 g/Cm3 or below.

そして、仮撚複合糸の沸水収縮率は、ポリエスデル繊維
からなる低伸度側のフィラメント糸よりも、ポリアミド
を複合したポリエステル繊維からなる高伸度側フィラメ
ント糸の方が低くなる。
The boiling water shrinkage rate of the false-twisted composite yarn is lower for the filament yarn on the high elongation side made of polyester fiber composited with polyamide than for the filament yarn on the low elongation side made of polyester fiber.

低伸度側フィラメント糸と高伸度側フィラメンl・糸と
の仮撚複合糸としての集合体構造は、基本的には、仮撚
加撚時の変形に起因し、低伸度側のフィラメント糸を芯
糸とし、その周囲に芯糸より多く捩り伸された分だけ糸
長差の長くなった高伸度側のフィラメント糸がとり囲む
ような構造をとる。この時発生する糸長差は、高々10
%であるが、ポリアミドの複合の比率が25%以上にな
ると仮撚加工して解撚されたとき糸が弾性回復し、糸長
差が2%以下となり、実質的に糸長差のない複合糸とな
る場合もある。また、仮撚解撚後、熱セットを施した場
合も実質的に糸長差のない複合糸となる場合もなる。こ
の意味では、本発明では便宜的に低伸度側のフィラメン
ト糸を芯糸と、また高伸度側のフィラメント糸を鞘糸と
称するものである。
The aggregate structure of the filament yarn on the low elongation side and the filament yarn on the high elongation side as a false-twisted composite yarn is basically caused by deformation during false twisting, and the filament on the low elongation side The structure is such that the yarn is a core yarn and is surrounded by filament yarns on the high elongation side, which have a longer yarn length difference by twisting and elongating more than the core yarn. The yarn length difference that occurs at this time is at most 10
%, but when the ratio of polyamide composite is 25% or more, the yarn recovers elastically when false-twisted and untwisted, and the yarn length difference becomes 2% or less, making it a composite with virtually no yarn length difference. Sometimes it becomes a thread. Further, even when heat setting is performed after false twisting and untwisting, a composite yarn with substantially no difference in yarn length may be obtained. In this sense, in the present invention, for convenience, the filament yarn on the low elongation side is referred to as the core yarn, and the filament yarn on the high elongation side is referred to as the sheath yarn.

更に、原糸は仮撚施撚時に、結晶化開始温度(120℃
)未満の温度しか受けないので、撚形態が実質的には固
定されず、捲縮率(TC)は高々3%までであり、通常
は1.5%以下の値をとるようになる。
Furthermore, the raw yarn has a crystallization initiation temperature (120°C) during false twisting.
), the twist configuration is not substantially fixed, and the crimp ratio (TC) is only up to 3% and usually takes values below 1.5%.

更に、仮撚加工の前または後で交絡を付与した場合には
、低伸度側フィラメント糸と高伸度側フィラメント糸の
間に交絡を与え、かつ交絡点が5〜150個/m程度付
与されると仮撚複合糸の取扱性や混繊性がよくなる。
Furthermore, when interlacing is applied before or after the false twisting process, interlacing is applied between the low elongation side filament yarn and the high elongation side filament yarn, and the number of entangled points is about 5 to 150/m. This improves the handling and blendability of the false twisted composite yarn.

[発明の効果] 本発明によれば、伸度の異なる2種以上のフィラメント
糸からなり、ポリエステル繊維の結晶化開始温度未満の
温度で複合仮撚加工された低結晶性仮撚複合糸の熱収縮
特性が改良できる。即ち、高沖度側ポリエステル糸にポ
リアミドを複合することにより、仮撚加工後の沸水収縮
率を低伸度側ポリエステル糸より低くすることができ、
その結果、布帛が硬くごわごわした風合になることを防
止したり、着用時のひじぬけ、ひざぬけ等の着用疲労の
懸念をなくすことができる。
[Effects of the Invention] According to the present invention, a low-crystalline false-twisted composite yarn made of two or more types of filament yarns with different elongations and subjected to a composite false-twisted process at a temperature below the crystallization initiation temperature of polyester fibers is Shrinkage characteristics can be improved. That is, by combining polyamide with the high-elongation polyester yarn, the boiling water shrinkage rate after false twisting can be made lower than that of the low-elongation polyester yarn,
As a result, it is possible to prevent the fabric from becoming hard and stiff, and to eliminate concerns about wearing fatigue such as slippage at the elbows and knees when worn.

本発明により得られる仮撚複合糸は、織物や編物のよう
な布帛とし、衣料やインテリアに用いることができる。
The false twisted composite yarn obtained by the present invention can be made into a fabric such as a woven or knitted fabric and used for clothing or interior decoration.

熱収縮率の高い複合糸は、布帛を染色仕上工程で十分に
縮め、経糸・緯糸の組織屈曲を大きくすることで、皮革
のようでしかも柔らかい布帛を得ることができるし、熱
収縮率の低い複合糸では、染色仕上との組合せで、シル
クライクな風合やスパンライクな風合を作ることができ
る。また、高伸度側の糸が複合型の繊維である場合は、
各横或ポリマーの一部または全部を溶出したり(例えば
、ポリアミドまたはポリエステルの一部または全てをギ
酸またはカセイソーダ等で溶出する、また、ポリエチレ
ン,ボリブロピレンはベンゼン,トルエンで容易に溶出
させることができる〉、薬品の作用で収縮歪差を起した
り、機械的作用を加えたりして個々の繊維を更にマイク
ロファイバーに一部または全てを分割してもよい。
Composite yarns with a high heat shrinkage rate can be made by sufficiently shrinking the fabric in the dyeing and finishing process and increasing the structural curvature of the warp and weft threads, making it possible to obtain a soft fabric that looks like leather and has a low heat shrinkage rate. Composite yarns can be combined with dyed finishes to create silk-like or spun-like textures. Also, if the yarn on the high elongation side is a composite fiber,
Part or all of each polymer can be eluted (for example, part or all of polyamide or polyester can be eluted with formic acid or caustic soda, etc., and polyethylene and polypropylene can be easily eluted with benzene and toluene. >, individual fibers may be further divided partially or completely into microfibers by causing a shrinkage strain difference by the action of chemicals or by applying mechanical action.

糸特性の測定は次の方法で行った。The yarn properties were measured by the following method.

糸の密度〈δ〉 密度勾配管を用いて、n−ヘブタン/四塩化炭素中で2
5℃で測定した。
Density of yarn <δ>
Measured at 5°C.

縮率(TC),沸水収縮 (BWS) 約500デニールの認を作り、2B/deの軽荷重およ
び0.1g/deの重荷重を負荷しl分間経過後の長さ
1oを読み、直ちに重荷重を取り除き軽荷重をかけたま
まの状態で沸水中に入れ20分後に取り出し、軽荷重を
はずして24時間自然乾燥する。このものに再び軽荷重
および重荷重を負荷し、1分間経過後の長さ12を読み
、直ちに重荷重を取り除いたt& 1分間経過した後の
長さ1,を読む。
Contraction ratio (TC), boiling water shrinkage (BWS) Create a denier of approximately 500 denier, apply a light load of 2B/de and a heavy load of 0.1g/de, read the length 1o after 1 minute has elapsed, and immediately remove the weight. Remove the load, put it in boiling water with a light load still applied, take it out after 20 minutes, remove the light load and let it air dry for 24 hours. Apply a light load and a heavy load to this object again, read the length 12 after 1 minute has passed, and immediately remove the heavy load and read the length 1 after 1 minute has elapsed.

次式によって計算する。Calculate using the following formula.

.O −1 捲縮率(TC)% ×100 D .OoJ 2 沸水収縮率(BWSI%=       X 100、
O0 実施例1 ポリエチレンテレフタレート(25℃で測定した、オル
ソークロ口フェノール中での極限粘度が0. 64 >
を紡13300m/minで溶融紡糸して得られた伸度
125%、密度1. 344g/ cm’の50デニー
ル12フィラメントのマルチフィラメント糸と、上記の
ポリエチレンテレフタレートとナイロン6(35℃で測
定した、メタクレゾール中での極限粘度が1.28>と
を50:50の比率で特公昭53−10169号公報記
載の方法により紡糸速度1500m/minでコンジュ
ゲート紡糸して得られた伸度235%、密度1. 20
6g/ cm31フィラメント当り32層貼り合せ[第
1図(f)の形状]の66デニール20フィラメントの
マルチフィラメント糸とを引揃えて、オーバーフイード
率1%,圧空圧3Kg/Cm2の条件下にインターレー
スノズルに導き、96個/mの交絡を与えた後、室温で
28℃および80℃の2条件で、延伸倍率1.55倍,
摩擦仮撚装置のディスク表面速度を糸速度の1.8倍と
して、400m/winの加工速度で延伸仮撚加工し、
巻取った。得られた仮撚複合糸の物性は第1表の通りで
あり、沸水収縮率についてみると、芯糸よりも鞘糸ない
し側糸(伸度の高い方のフィラメント糸〉の方が低かっ
た。
.. O-1 Crimp rate (TC)% ×100 D. OoJ 2 Boiling water shrinkage rate (BWSI% = X 100,
O0 Example 1 Polyethylene terephthalate (intrinsic viscosity in orthochlorophenol measured at 25°C is 0.64>
The elongation obtained by melt spinning at 13,300 m/min was 125%, and the density was 1. A 50 denier 12 filament multifilament yarn of 344 g/cm' and the above polyethylene terephthalate and nylon 6 (intrinsic viscosity in metacresol, measured at 35°C > 1.28) were prepared in a ratio of 50:50. Elongation of 235% and density of 1.20 obtained by spinning the conjugate at a spinning speed of 1500 m/min according to the method described in Publication No. 53-10169.
A 66 denier 20 filament multifilament yarn with 32 layers laminated per 6 g/cm31 filament [shape shown in Figure 1 (f)] was aligned and interlaced under the conditions of an overfeed rate of 1% and a compressed air pressure of 3 kg/cm2. After introducing the nozzle and giving 96 entanglements/m, the stretching ratio was 1.55 times at room temperature under two conditions of 28°C and 80°C.
The disk surface speed of the friction false twisting device was set to 1.8 times the yarn speed, and the stretch false twisting was performed at a processing speed of 400 m/win.
I wound it up. The physical properties of the obtained false-twisted composite yarn are shown in Table 1, and the boiling water shrinkage rate was lower for the sheath yarn or side yarn (filament yarn with higher elongation) than for the core yarn.

第 1 表 比較例1 実施例1と同様にして、ポリエチレンテレフタレートを
紡速3300m/minで溶融紡糸して得られた伸度1
25%,密度1. 344g/ cm3の50デニール
12フィラメントのマルチフィラメント糸と、ポリエチ
レシデレフタレートを紡速1500m/minで溶融紡
糸して得られた伸度345%,密度1. 341g/ 
cm370デニール24フィラメントのマルチフィラメ
ント糸とを引揃えて実施例1と同様にして交絡を与えた
後、同条件で延伸仮撚加工を施した。得られた複合糸の
物性は第2表の通りであった。この場合、沸水収縮率に
ついてみると、芯糸よりも鞘糸ないし側糸(伸度の高い
方のフィラメント糸)の方が高かった。この複合糸を九
編に編戒し、染色した所、極端に収縮し、プラスチック
板のように固くなってしまった。これに対して、実施例
1の複合糸では染色で編地が収縮を起しても、編目ルー
プの隙間も残っており、固くはならず、衣料として使え
るだけの十分なしなやかさをもっていた。これらの際は
鞘糸ないし側糸の熱収縮挙動の違いによるものである。
Table 1 Comparative Example 1 Elongation 1 obtained by melt spinning polyethylene terephthalate at a spinning speed of 3300 m/min in the same manner as in Example 1.
25%, density 1. A multifilament yarn of 344 g/cm3 of 50 denier 12 filaments and polyethylene derephthalate were melt-spun at a spinning speed of 1500 m/min, with an elongation of 345% and a density of 1. 341g/
A multifilament yarn of cm370 denier 24 filaments was drawn together and entangled in the same manner as in Example 1, and then stretched and false-twisted under the same conditions. The physical properties of the obtained composite yarn were as shown in Table 2. In this case, the boiling water shrinkage rate was higher for the sheath yarn or side yarn (filament yarn with higher elongation) than for the core yarn. When this composite yarn was knitted into nine stitches and dyed, it shrunk extremely and became as hard as a plastic plate. On the other hand, in the composite yarn of Example 1, even if the knitted fabric shrinks due to dyeing, gaps between the stitch loops remained, so it did not become stiff and was sufficiently flexible to be used as clothing. These cases are due to differences in the thermal shrinkage behavior of the sheath threads or side threads.

第 2 表 実施例2 実施例1と同じ原糸を用い、仮撚ヒーター温度を室温(
28℃〉として、同じ条件で交絡と仮撚加工を施した後
、引続いて、第2ヒーター〈200℃〉を用いて非接触
下に定長で熱セットした。得られた糸の特性は第3表の
通りであった。この場合も沸水収縮率は芯糸よりも鞘糸
ないし側糸の方が低い糸が得られた。
Table 2 Example 2 Using the same yarn as in Example 1, the temperature of the false twisting heater was set to room temperature (
After entangling and false twisting were carried out under the same conditions at 28°C, the fabric was subsequently heat-set to a fixed length using a second heater (200°C) without contact. The properties of the obtained yarn were as shown in Table 3. In this case as well, a yarn was obtained in which the boiling water shrinkage rate was lower in the sheath yarn or side yarn than in the core yarn.

第 3 表 尖施例3 実施例1と同様にして、ポリエチレンテレフタレートを
紡速3300m/minで溶融紡糸して得られた仲度1
25%,密度1. 344g/ cm’の50デニール
l2フィラメントのマルチフィラメント糸と、ポリエチ
レンテレフタレートとナイロンとを70 : 30の比
率でブレンドし、1500m/minの速度で溶融紡糸
して得られた伸度225%,!M度1.264g/cm
3, 70デニール35フィラメントのマルチフィラメ
ント糸とを引揃えて、インターレースノズルを用い、オ
ーバーフィード率1.5%,圧空圧4Kg/cm’の条
件下で75個/mの交絡を与えた後、室温25℃で延伸
倍率1−5m.*擦仮撚具のディスク表面速度を糸速度
の2.0倍として350m/minの加工速度で延伸仮
撚加工し、巻取った。得られた複合糸の物性は第4表の
通りであり、沸水収縮率についてみると、芯糸よりも鞘
糸ないし側糸(伸度の高い方のフィラメント糸〉の方が
低かった。
3rd Surface Example 3 Nakadou 1 obtained by melt spinning polyethylene terephthalate at a spinning speed of 3300 m/min in the same manner as in Example 1.
25%, density 1. 344 g/cm' 50 denier L2 filament multifilament yarn, polyethylene terephthalate and nylon were blended in a ratio of 70:30, and the elongation was 225%, obtained by melt spinning at a speed of 1500 m/min! M degree 1.264g/cm
3. After aligning 70 denier 35 filament multifilament yarns and using an interlace nozzle to give 75 entanglements/m under conditions of an overfeed rate of 1.5% and a compressed air pressure of 4 kg/cm', Stretching ratio 1-5 m at room temperature 25°C. *Stretch false twisting was performed at a processing speed of 350 m/min with the disc surface speed of the rubbing false twisting tool set at 2.0 times the yarn speed, and the material was wound up. The physical properties of the obtained composite yarn are shown in Table 4, and the boiling water shrinkage rate was lower for the sheath yarn or side yarn (filament yarn with higher elongation) than for the core yarn.

第 4 表No. 4 table

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

第1図は本発明に用いるポリエステルと、120℃以F
での結晶化速度がポリエステルよりも早いボリマーとを
複合し′fS繊維の複合形態を例示する模式図、第2図
は本発明を実施する装置を例示する模式図である。 1は低伸度側の原糸、2は高伸度側の原糸、3,5は送
りローラ、8.10喰引取りローラ、4はインターレー
スノズル、6は仮撚セットヒータ、7は仮撚具、9は熱
処理しータ、11は巻取装置。
Figure 1 shows the polyester used in the present invention and the temperature below 120°C.
FIG. 2 is a schematic diagram illustrating a composite form of 'fS fibers, which are composited with a polymer whose crystallization rate is faster than that of polyester. FIG. 2 is a schematic diagram illustrating an apparatus for carrying out the present invention. 1 is the raw yarn on the low elongation side, 2 is the raw yarn on the high elongation side, 3 and 5 are the feed rollers, 8.10 take-up roller, 4 is the interlace nozzle, 6 is the false twist set heater, 7 is the false twist set heater, and 7 is the false twist set heater. A twisting tool, 9 a heat treatment sheeter, and 11 a winding device.

Claims (4)

【特許請求の範囲】[Claims] (1)伸度の異なる2種以上のフィラメント糸からなる
仮撚複合糸であって、該複合糸を構成する全フィラメン
トの平均密度が1.36g/cm^3以下であって、低
伸度側のフィラメント糸はポリエステル繊維からなり、
高伸度側のフィラメント糸は120℃以下での結晶化速
度がポリエステルよりも早いポリマーを複合したポリエ
ステル繊維からなり、かつ高伸度側フィラメント糸の沸
水収縮率が低伸度側フィラメント糸の沸水収縮率より低
いことを特徴とする仮撚複合糸。
(1) False-twisted composite yarn consisting of two or more types of filament yarns with different elongations, where the average density of all filaments constituting the composite yarn is 1.36 g/cm^3 or less, and low elongation. The filament thread on the side is made of polyester fiber,
The filament yarn on the high elongation side is made of polyester fiber composited with a polymer whose crystallization rate at 120°C or lower is faster than that of polyester, and the boiling water shrinkage rate of the filament yarn on the high elongation side is lower than that in the boiling water of the filament yarn on the low elongation side. A false-twisted composite yarn characterized by a shrinkage rate lower than that of the yarn.
(2)仮撚複合糸に交絡点が5〜150個/m存在する
請求項1記載の仮撚複合糸。
(2) The false-twisted composite yarn according to claim 1, wherein the false-twisted composite yarn has 5 to 150 entangled points/m.
(3)伸度の異なる2種以上のフィラメント糸を引揃え
て、120℃未満の温度で仮撚加工を施すに際し、低伸
度側のフィラメント糸にはポリエステル繊維を用い、高
伸度側のフィラメント糸には120℃以下での結晶化速
度がポリエステルよりも早いポリマーを複合したポリエ
ステル繊維を用いることを特徴とする仮撚複合糸の製造
方法。
(3) When aligning two or more types of filament yarns with different elongations and performing false twisting at a temperature below 120°C, use polyester fibers for the filament yarns on the low elongation side, and use polyester fibers for the filament yarns on the high elongation side. A method for producing a false-twisted composite yarn, characterized in that the filament yarn is a polyester fiber composited with a polymer whose crystallization rate at 120° C. or lower is faster than that of polyester.
(4)仮撚前、または仮撚後の糸に10〜170個/m
の交絡点を付与する請求項3記載の仮撚複合糸の製造方
法。
(4) 10 to 170 pieces/m in yarn before or after false twisting
4. The method for producing a false-twisted composite yarn according to claim 3, wherein the intertwining points are provided.
JP30654989A 1989-11-28 1989-11-28 False twisted composite yarn and method for producing the same Expired - Fee Related JP2925608B2 (en)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
JPH03167333A true JPH03167333A (en) 1991-07-19
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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08209449A (en) * 1995-02-07 1996-08-13 Mosho Tei Method for opening of conjugate fiber
JP2010047864A (en) * 2008-08-21 2010-03-04 Toray Opelontex Co Ltd False twist yarn
CN113073411A (en) * 2020-01-06 2021-07-06 东丽纤维研究所(中国)有限公司 Mixed fiber false-twist processed yarn and preparation method thereof and fabric

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08209449A (en) * 1995-02-07 1996-08-13 Mosho Tei Method for opening of conjugate fiber
JP2010047864A (en) * 2008-08-21 2010-03-04 Toray Opelontex Co Ltd False twist yarn
CN113073411A (en) * 2020-01-06 2021-07-06 东丽纤维研究所(中国)有限公司 Mixed fiber false-twist processed yarn and preparation method thereof and fabric

Also Published As

Publication number Publication date
JP2925608B2 (en) 1999-07-28

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