JPH11222745A - Production of polyester-based combined filament yarn and knitted fabric - Google Patents

Production of polyester-based combined filament yarn and knitted fabric

Info

Publication number
JPH11222745A
JPH11222745A JP10024956A JP2495698A JPH11222745A JP H11222745 A JPH11222745 A JP H11222745A JP 10024956 A JP10024956 A JP 10024956A JP 2495698 A JP2495698 A JP 2495698A JP H11222745 A JPH11222745 A JP H11222745A
Authority
JP
Japan
Prior art keywords
yarn
orientation
shrinkage
polyester
mixed fiber
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
JP10024956A
Other languages
Japanese (ja)
Inventor
Takashi Ochi
隆志 越智
Masayuki Sato
正幸 佐藤
Akira Kidai
明 木代
Original Assignee
Toray Ind Inc
東レ株式会社
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 Toray Ind Inc, 東レ株式会社 filed Critical Toray Ind Inc
Priority to JP10024956A priority Critical patent/JPH11222745A/en
Publication of JPH11222745A publication Critical patent/JPH11222745A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To obtain a polyester-based combined filament yarn capable of giving at low cost knitted fabrics with excellent puffiness, softness, resilient feel and touch feel, by simultaneously spinning plural kinds of filaments differing in orientation degree from one another into an undrawn hetero-orientation degree combined filament yarn, which is then drawn. SOLUTION: This polyester-based combined filament yarn is obtained by the following process: two or more kinds of filaments differing in orientation degree from one another are spun simultaneously into an undrawn hetero- orientation degree combined filament yarn, which, in turn, is substantially drawn so that the filaments of higher orientation degree turn into shrinkable filaments, while those of lower orientation degree into self-extensible filaments; wherein it is preferable that the self-extensible filaments have a dry heat shrinkage of -5 to 0% and boiling water shrinkage of <=1%, and the shrinkable filaments has a dry heat shrinkage of >=8%, and the dry heat shrinkage difference between the above two kinds of filaments is >=10%.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はふくらみ、ソフト、
反発感に優れたポリエステル混繊糸の製造方法および織
編物に関するものである。
The present invention relates to a swelling, soft,
The present invention relates to a method for producing a polyester mixed fiber excellent in resilience and a woven or knitted fabric.

【0002】[0002]

【従来の技術】ポリエステルは機械的特性をはじめ様々
な優れた特性を有しているため衣料用途をはじめ各種分
野に利用されている。衣料用途では天然繊維をターゲッ
トとして品質の改良が行われてきているが、特にふくら
み、ソフト感のある風合いの実現のための手段として、
熱による収縮特性の異なる繊維を混繊する、いわゆる収
縮差混繊糸が広く用いられている。そして最近、熱によ
り伸長性を示す、いわゆる自発伸長糸を用いた収縮差混
繊糸が注目を集めている。このタイプの収縮差混繊糸を
用いれば織物組織の密度が増しても十分な糸長差を染色
加工後に得ることができ、ふくらみ、ソフト感に優れた
布帛を得ることができるのである。
2. Description of the Related Art Polyester has various excellent properties including mechanical properties, and is therefore used in various fields including clothing. In clothing applications, quality has been improved targeting natural fibers, but especially as a means to realize a swelling and soft texture.
A so-called shrinkage-differential mixed yarn, which mixes fibers having different shrinkage characteristics due to heat, is widely used. Recently, shrinkage-differential mixed yarns using so-called spontaneously elongated yarns, which exhibit extensibility by heat, have attracted attention. If this type of shrinkage difference mixed yarn is used, a sufficient difference in yarn length can be obtained after the dyeing process even if the density of the woven fabric increases, and a fabric excellent in swelling and softness can be obtained.

【0003】ここでいう自発伸長糸とは、熱処理前の原
長を基準として熱処理により伸長する性質を有する繊維
をいうものである。自発伸長糸の製造方法は、例えば特
開平4-352836号公報にポリエステル部分配向糸(以下P
OYと略す)を一旦延伸した後弛緩熱処理する方法、特
開平2-293410号公報にPOYをそのまま弛緩熱処理する
方法等が開示されており、弛緩熱処理工程を要するもの
が一般的である。そして、この自発伸長糸を別途製造し
た収縮糸と後で混繊する(以下、後混繊法と略す)こと
により収縮差混繊糸を得ている。
[0003] The spontaneously elongated yarn referred to here is a fiber having the property of being elongated by heat treatment based on the original length before heat treatment. A method for producing a spontaneously elongated yarn is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 4-352836.
(Abbreviated as OY) is stretched once and then subjected to a relaxation heat treatment, and JP-A-2-93410 discloses a method in which POY is subjected to a relaxation heat treatment as it is, and generally requires a relaxation heat treatment step. Then, the spontaneously elongated yarn is blended later with a separately produced shrinkable yarn (hereinafter, abbreviated as a post-blending method) to obtain a shrinkage-differentiated mixed yarn.

【0004】しかしながら、従来の後混繊法では自発伸
長糸と収縮糸、すなわち少なくとも2種類の糸を別工程
で製造するため、それだけでコストアップとなってしま
う。さらに、後混繊のための費用もかさむため、紡糸/
巻き取り段階で混繊するいわゆる紡糸混繊法に比べコス
ト面で大きく劣るものである。
[0004] However, in the conventional post-mixing method, spontaneously elongated yarns and shrinkable yarns, that is, at least two types of yarns, are manufactured in separate steps, and this alone increases the cost. In addition, spinning /
This is significantly inferior in cost as compared with the so-called spinning fiber blending method in which the fiber is blended at the winding stage.

【0005】一方、自発伸長糸ではない通常の低収縮糸
(乾熱収縮率>0%)と高収縮糸による収縮差混繊糸につ
いては従来から紡糸混繊法が採用されていた。例えば、
特開平2-19528号 公報には低収縮成分としてホモポリエ
チレンテレフタレート、高収縮成分としてイソフタル酸
(以下IPAと略す)と2・2 ビス{4-(2-ヒドロキシエト
キシ)フェニル}プロパン(以下BHPPと略す)を共重合
したポリエステルを使用して混繊紡糸を行い、未延伸糸
を一旦巻き取った後延伸し、収縮差混繊糸とする方法が
開示されている。該方法では紡糸一発で混繊できるた
め、後混繊法に比べ大幅なコストダウンができるのであ
る。
[0005] On the other hand, a spinning blending method has conventionally been used for a normal low shrinkage yarn (dry heat shrinkage> 0%) which is not a spontaneously elongated yarn and a shrinkage difference mixed yarn made of a high shrinkage yarn. For example,
Japanese Patent Application Laid-Open No. 2-19528 discloses that homopolyethylene terephthalate is used as a low shrinkage component, isophthalic acid (hereinafter abbreviated as IPA) as a high shrinkage component, and 2.2 bis {4- (2-hydroxyethoxy) phenyl} propane (hereinafter BHPP). This method discloses a method in which a mixed fiber spinning is carried out using a polyester obtained by copolymerizing the above-mentioned (hereinafter abbreviated), and an undrawn yarn is once wound and then drawn to obtain a shrinkage-differential mixed yarn. In this method, the fiber can be mixed by a single spinning, so that the cost can be significantly reduced as compared with the post-fiber mixing method.

【0006】そのため、自発伸長糸を利用した収縮差混
繊糸についてもコストダウンのため紡糸混繊法の開発が
望まれていた。しかしながら、前記したように自発伸長
糸の製造に弛緩熱処理工程が必要なため、紡糸混繊法を
採用することは困難なのである。その理由を以下に述べ
る。例えば特開平2-19528号 公報のように高収縮成分と
して共重合ポリエステルを採用し、紡糸混繊、弛緩熱処
理により、仮に自発伸長糸と高収縮糸の収縮差混繊糸が
得られたとしても、芯糸となり張り腰をもたせる高収縮
糸の収縮応力、強伸度特性が著しく劣ったものとなる。
そのため、製織工程で糸切れやパーン引け等のトラブル
が多発するのみならず、得られた布帛もクタッとして張
り腰や反発感、ドレープ性に乏しいものとなり、商品価
値のあるものが得られないからである。例えば、B.P.84
1229号公報には繊度差、断面形状差を有するポリエステ
ル糸条を紡糸混繊で得(紡糸速度1200ヤード/分)、約
2.5倍の低倍率延伸を施した後、約50%の弛緩熱処理を
施すことにより、自発伸長糸と収縮糸から成る収縮差混
繊糸が得られることが記載されている。しかし、該方法
で得られた収縮差混繊糸は前記したように、商品価値に
乏しいものであった。
[0006] For this reason, there has been a demand for the development of a spinning mixed fiber method for reducing the cost of mixed shrinkage mixed yarns using spontaneously elongated yarns. However, as described above, since the relaxation heat treatment step is required for the production of the spontaneously elongated yarn, it is difficult to employ the spinning fiber blending method. The reason is described below. For example, even if a copolyester is used as a high shrinkage component as in JP-A No. 2-19528 and spinning blending and relaxation heat treatment are performed, a shrinkage difference blended yarn of a spontaneously elongated yarn and a high shrinkage yarn is obtained. The shrinkage stress and the high elongation characteristics of the high shrinkage yarn which becomes the core yarn and has a firm stiffness are remarkably inferior.
Therefore, in the weaving process, not only troubles such as yarn breakage and puncturing occur frequently, but also the obtained fabric has a tightness, resilience, poor drapability as a tightness, and a product having commercial value cannot be obtained. It is. For example, BP84
No. 1229 discloses that a polyester yarn having a difference in fineness and cross-sectional shape is obtained by spinning and blending (spinning speed 1200 yards / minute).
It is described that by performing a low-magnification stretching of 2.5 times and then performing a relaxation heat treatment of about 50%, a shrinkage-differential mixed yarn composed of a spontaneously elongated yarn and a shrinkable yarn can be obtained. However, the shrinkage-differential mixed yarn obtained by this method has poor commercial value as described above.

【0007】このように、自発伸長糸を利用した収縮差
混繊糸は確かに風合い特性は優れているのであるが、弛
緩熱処理工程が必要であるため紡糸混繊法を採用するこ
とが困難なのであった。
As described above, the shrinkage-differentiated mixed yarn using the spontaneously elongated yarn certainly has excellent feeling properties, but it requires a relaxation heat treatment step, so it is difficult to adopt the spinning mixed fiber method. there were.

【0008】さらに、弛緩熱処理法による自発伸長糸の
製造では20〜50%の弛緩熱処理が必要となるため、工程
安定性が悪いのみならず、収率が低く、またドッフ後の
加工再スタート成功率も低いため、屑量が多くなるの
で、それだけで高コストとなるという根本的な問題があ
った。さらに、糸斑が発生しやすく、染め斑が発生する
等、品質面でも問題があった。
Furthermore, in the production of spontaneously elongated yarns by the relaxation heat treatment method, a relaxation heat treatment of 20 to 50% is required, so that not only the process stability is poor, but also the yield is low, and the processing restart after the doff is successful. Since the rate is low, the amount of waste increases, and there is a fundamental problem that the cost alone increases. Furthermore, there was a problem in quality, such as easy occurrence of thread spots and dye spots.

【0009】また、加工速度が低いため生産性が低く、
弛緩処理が可能な特別な延伸機が必要であるため設備費
がかさむという問題もあった。すなわち、これらの諸問
題のためコスト高となっていた。
Further, the productivity is low due to the low processing speed,
Since a special stretching machine capable of relaxation treatment is required, there is also a problem that equipment costs increase. That is, the costs were high due to these problems.

【0010】また、特開平9-228167号公報、特開平9-21
060号公報にはPOYの定長(緊張)熱処理による方法
が開示されているが、これらの方法では熱板上または熱
セットローラー上での糸揺れが極端に大きく、やはり弛
緩熱処理による方法と同様な問題が発生するものであ
る。
[0010] Also, JP-A-9-228167, JP-A-9-21
No. 060 discloses a method using a fixed-length (tensile) heat treatment of POY. In these methods, however, the yarn sway on a hot plate or a heat setting roller is extremely large, which is also the same as the method using the relaxation heat treatment. Problems arise.

【0011】[0011]

【発明が解決しようとする課題】本発明は、自発伸長糸
を利用した収縮差混繊糸の製造に関して紡糸混繊法を採
用することにより、コストダウンをするのみならず、弛
緩熱処理、定長熱処理で発生する様々な問題を解決し、
より生産性が高く、簡易で、しかも染め斑等が無い品質
に優れた自発伸長糸を利用したポリエステル収縮差混繊
糸の製造方法を提供するものである。
SUMMARY OF THE INVENTION In the present invention, not only the cost is reduced but also the relaxation heat treatment, the fixed length Solve various problems that occur in heat treatment,
It is an object of the present invention to provide a method for producing a polyester shrinkage difference mixed fiber using a spontaneously elongated yarn which has higher productivity, is simple, and has excellent quality without dye spots or the like.

【0012】[0012]

【課題を解決するための手段】上記目的は、配向度差を
有する2種類以上の糸条を同時に紡糸し未延伸配向度差
混繊糸とした後実質的に延伸を行うポリエステル収縮差
混繊糸の製造方法において、未延伸配向度差混繊糸にお
いて高配向側の糸条を延伸により収縮糸、低配向側の糸
条を延伸により自発伸長糸とすることを特徴とするポリ
エステル混繊糸の製造方法により達成される。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester fiber having a different degree of orientation in which two or more yarns having different degrees of orientation are simultaneously spun to obtain a non-stretched mixed fiber having a different degree of orientation, and then substantially stretched. In the method for producing a yarn, a polyester mixed fiber yarn characterized in that in a non-drawn mixed yarn having a different degree of orientation, a yarn on a high orientation side is made into a contraction yarn by stretching, and a yarn on a low orientation side is made into a spontaneously elongated yarn by stretching. Is achieved.

【0013】[0013]

【発明の実施の形態】本発明でいうポリエステルとはポ
リエチレンテレフタレート(以下PETと略す)、ポリ
プロピレンテレフタレート(以下PPTと略す)、ポリ
ブチレンテレフタレート(以下PBTと略す)等が挙げ
られるが、PETが最も汎用的であり好ましい。また、
ジオール成分および酸成分の一部が各々15mol%以下の範
囲で他の共重合可能な成分で置換されたものであっても
よい。また、これらは他ポリマ、艶消剤、難燃剤、帯電
防止剤、顔料などの添加物を含有していてもよい。
BEST MODE FOR CARRYING OUT THE INVENTION The polyester referred to in the present invention includes polyethylene terephthalate (hereinafter abbreviated as PET), polypropylene terephthalate (hereinafter abbreviated as PPT), polybutylene terephthalate (hereinafter abbreviated as PBT) and the like. Versatile and preferred. Also,
A part of the diol component and a part of the acid component may be substituted with other copolymerizable components in a range of 15 mol% or less. They may also contain additives such as other polymers, matting agents, flame retardants, antistatic agents, pigments and the like.

【0014】以下、ポリエチレンテレフタレート(以下
PETと略す)を例として説明する。
Hereinafter, polyethylene terephthalate (hereinafter abbreviated as PET) will be described as an example.

【0015】本発明では、まず紡糸混繊法により未延伸
配向度差混繊糸を得ることが必須であるが、本発明では
配向度差混繊糸とは繊維の複屈折度または伸度が異なる
糸条群をいう。例えば複屈折度(以下Δnと略す)0.03
4、伸度175%の糸条と複屈折度0.007、伸度420%の糸条
とからなる糸条群である。前者が高配向側、後者が低配
向側である。本発明では、配向度差混繊糸は2群あるい
はそれ以上多数の糸条群から成るものであるが、2群で
も充分な効果を奏するので2群で以下説明する。3群以
上の場合は、最も配向度の高い糸条と最も配向度の低い
糸条について以下の要件を満たすことが好ましい。
In the present invention, it is essential to first obtain a non-stretched mixed yarn having a different orientation degree by a spinning mixed fiber method. Refers to different yarn groups. For example, the degree of birefringence (hereinafter abbreviated as Δn) 0.03
4. It is a yarn group consisting of a yarn having an elongation of 175% and a yarn having a birefringence of 0.007 and an elongation of 420%. The former is the high orientation side and the latter is the low orientation side. In the present invention, the mixed yarn having a difference in the degree of orientation is composed of two or more groups of yarns. However, since two groups can provide a sufficient effect, the two groups will be described below. In the case of three or more groups, it is preferable to satisfy the following requirements for the yarn with the highest orientation and the yarn with the lowest orientation.

【0016】本発明では未延伸配向度差混繊糸におい
て、高配向側糸条の配向度と低配向側糸条の配向度差が
大きい方が、延伸後に自発伸長糸と収縮糸の収縮率差が
大きくなり好ましい。高配向側糸条の複屈折度(以下、
高配向側Δnと略す)と低配向側糸条(以下、低配向側
Δnと略す)の複屈折度の差は0.015以上、好ましくは
0.025以上、より好ましくは0.030以上である。または高
配向度側糸条と低配向度側糸条の伸度の差は80%以上、
好ましくは100%以上、より好ましくは150%以上であ
る。
In the present invention, the larger the difference between the degree of orientation of the high orientation side yarn and the degree of orientation of the low orientation side yarn in the undrawn orientation difference mixed yarn, the more the shrinkage ratio between the spontaneously elongated yarn and the shrinkable yarn after stretching. The difference is large, which is preferable. The birefringence of the highly oriented yarn (hereinafter, referred to as
The difference in birefringence between the high orientation side Δn) and the low orientation side yarn (hereinafter abbreviated as low orientation side Δn) is 0.015 or more, preferably
It is 0.025 or more, more preferably 0.030 or more. Or the difference in elongation between the high orientation side yarn and the low orientation side yarn is 80% or more,
It is preferably at least 100%, more preferably at least 150%.

【0017】紡糸混繊法により未延伸配向度差混繊糸を
得る方法としては以下のものが挙げられるが、特にこれ
に制限されるものではない。例えば、高配向側糸条とし
てホモPET、低配向側糸条としてホモPETとスルホ
ン酸金属塩を含む成分を共重合したポリエステルの複合
糸またはブレンド物を同時に紡糸することにより配向度
差混繊糸を得ることができる。スルホン酸金属塩として
は5−ナトリウムスルホイソフタル酸(以下、SSIAと略
す)が最も汎用的であり好ましいが、それの類似体でも
差し支えない。また、高配向側糸条としてホモPET、
低配向側糸条としてホモPETとポリスチレン等伸長粘
度の温度依存性がPETより高いポリマとの複合糸を同
時に紡糸することにより配向度差混繊糸を得ることがで
きる。さらに、高配向側糸条としてホモPETとポリエ
チレンやポリプロピレン等伸長粘度の温度依存性がPE
Tより低いポリマのブレンド物、低配向側糸条としてホ
モPETを同時に紡糸することによっても配向度差混繊
糸を得ることができる。なお、伸長粘度の温度依存性の
相対的な大小については、特開平9-176920号公報に記載
の方法で判定することができる。
Examples of the method for obtaining the unstretched mixed yarn of different orientation degree by the spinning fiber mixing method include the following, but the method is not particularly limited thereto. For example, by simultaneously spinning a composite yarn or a blend of a polyester obtained by copolymerizing a homo PET and a component containing a metal sulfonic acid salt as a homo PET as a high orientation side yarn and a homo PET and a component containing a metal sulfonate as a low orientation side yarn. Can be obtained. As the sulfonic acid metal salt, 5-sodium sulfoisophthalic acid (hereinafter abbreviated as SSIA) is the most general and preferred, but an analog thereof may be used. In addition, as a highly oriented yarn, homo PET,
By simultaneously spinning a composite yarn of homo-PET and a polymer whose elongational viscosity such as polystyrene has a higher temperature dependency than PET as the low-orientation side yarn, it is possible to obtain a yarn with different degrees of orientation. Furthermore, the temperature dependence of elongational viscosity such as homo-PET and polyethylene or polypropylene is high as the highly oriented yarn.
By simultaneously spinning homo-PET as a blend of a polymer lower than T and a low-orientation side yarn, a mixed-orientation-different yarn can be obtained. The relative magnitude of the temperature dependence of the elongational viscosity can be determined by the method described in JP-A-9-176920.

【0018】また、場合によっては公知の物理的手法を
用いても良い。例えば一方の糸条にだけ高速気流を紡糸
線に沿って順方向または逆方向に流す(特開昭 62-2633
09号公報)等の外力を与える方法を用いても良い。ま
た、2つの糸条をそれぞれ別の熱履歴を与えて巻き取り
配向度差混繊糸を得ることもできる(特開昭 61-152815
号公報)。
In some cases, a known physical method may be used. For example, a high-speed airflow is caused to flow in only one yarn in the forward or reverse direction along the spinning line (Japanese Patent Laid-Open No. 62-2633).
No. 09) may be used. Alternatively, the two yarns may be given different heat histories to obtain a yarn having a different degree of winding orientation (Japanese Patent Laid-Open No. 61-152815).
No.).

【0019】上記方法に以下の方法を付加することによ
り、さらに配向度差を助長することができる。高配向側
糸条側では、繊維断面の高異形化または細繊度化による
表面積増加による冷却効率、空気抵抗のアップ、高重合
度化による伸長粘度のアップ、口金吐出孔面積増大によ
るドラフト比のアップ等が高配向化に有効である。ま
た、低配向糸条側では太繊度化による冷却効率、空気抵
抗のダウン、低重合度化による伸長粘度のダウン、口金
吐出孔面積減少によるドラフト比のダウン等が低配向化
に有効である。ただし、これらの方法単独では本発明で
好ましいだけ大きな配向度差を付与することはできない
ので、補助手段として使用することが好ましい。
By adding the following method to the above method, the difference in the degree of orientation can be further promoted. On the high-orientation yarn side, cooling efficiency, air resistance is increased by increasing the surface area by making the fiber cross section highly deformed or finer, the elongational viscosity is increased by increasing the degree of polymerization, and the draft ratio is increased by increasing the mouth area of the die discharge hole. Are effective for increasing the orientation. On the low orientation yarn side, cooling efficiency by lowering the fineness, lowering the air resistance, lowering the elongational viscosity by lowering the degree of polymerization, lowering the draft ratio by reducing the area of the die discharge hole, etc. are effective for lowering the orientation. However, these methods alone cannot provide a large difference in the degree of orientation that is preferable in the present invention, and therefore, it is preferable to use them as auxiliary means.

【0020】上記方法により得た未延伸配向度差混繊糸
を延伸することにより、自発伸長糸と収縮糸からなる収
縮差混繊糸を得るためには以下のことが重要である。す
なわち、ポリエステル未延伸糸は延伸すると収縮糸とな
るのが普通であるので、低配向側糸条を自発伸長糸とす
るには以下のように特定の延伸条件を採用することが好
ましい。
In order to obtain a shrinkage-differentiated yarn composed of a spontaneously elongated yarn and a shrinkable yarn by stretching the unstretched yarn with a difference in orientation degree obtained by the above method, the following is important. That is, since the polyester undrawn yarn is usually formed into a contraction yarn when drawn, it is preferable to adopt the following specific drawing conditions in order to make the low-oriented side yarn a spontaneously expanded yarn.

【0021】本発明において、低配向側糸条を自発伸長
糸とするには延伸の際の温度条件を特定することが好ま
しい。本発明では延伸温度は延伸直前の糸条の予熱温度
を意味し、ホットローラー延伸機の場合、延伸直前の第
一ホットローラー温度を指すものである。PETでは延
伸温度は 110℃以下とすることが好ましい。延伸温度が
110℃より高くなると延伸前に繊維の結晶化が過度に進
むため、延伸糸に自発伸長性を付与するには不利とな
る。延伸温度はガラス転移温度(以下Tgと略す)〜95
℃であれば延伸が均一となりより好ましい。さらに好ま
しくは80〜90℃である。なお、Tgは、PETチップを
Perkin Elmer 社製 DSC 7を用い試料量10mg、昇温速度
40℃/分で測定したものである。
In the present invention, in order to make the low-orientation side yarn into a spontaneously elongated yarn, it is preferable to specify the temperature conditions during the drawing. In the present invention, the drawing temperature refers to the preheating temperature of the yarn immediately before drawing, and in the case of a hot roller drawing machine, refers to the temperature of the first hot roller immediately before drawing. In PET, the stretching temperature is preferably 110 ° C. or less. Stretching temperature
If the temperature is higher than 110 ° C., crystallization of the fiber proceeds excessively before drawing, which is disadvantageous for imparting spontaneous elongation to the drawn yarn. The stretching temperature is from the glass transition temperature (hereinafter abbreviated as Tg) to 95.
If it is ° C, stretching becomes uniform, which is more preferable. More preferably, it is 80 to 90 ° C. Tg is a PET chip.
Using Perkin Elmer DSC 7, sample amount 10mg, heating rate
It was measured at 40 ° C / min.

【0022】本発明では熱セット温度は延伸後の糸条の
熱処理温度を意味し、ホットローラー延伸機の場合、延
伸後の第2ホットローラー温度を指すものである。PE
Tでは熱セット温度は110℃以上とすることが好まし
い。熱セット温度が110℃より低くなると延伸糸の結晶
化が進まないため配向非晶分子鎖の固定が不十分とな
り、延伸糸に自発伸長性を付与するには不利となる。た
だし、自発伸長糸と収縮糸の糸長差を付与し織物のふく
らみ感を満足させるには、収縮糸側の収縮率を高くする
必要があり、熱セット温度は低い方が好ましい。好まし
くは熱セット温度は140℃以下、より好ましくは130℃以
下、さらに好ましくは125℃以下である。
In the present invention, the heat setting temperature means the heat treatment temperature of the drawn yarn, and in the case of a hot roller drawing machine, refers to the temperature of the second hot roller after drawing. PE
In T, the heat setting temperature is preferably set to 110 ° C. or higher. When the heat setting temperature is lower than 110 ° C., crystallization of the drawn yarn does not proceed, so that the fixation of the oriented amorphous molecular chains becomes insufficient, which is disadvantageous for imparting spontaneous extensibility to the drawn yarn. However, in order to provide a difference in yarn length between the spontaneously elongated yarn and the shrinkable yarn and to satisfy the feeling of swelling of the woven fabric, it is necessary to increase the shrinkage on the shrinkable yarn side, and a lower heat setting temperature is preferred. Preferably, the heat setting temperature is 140 ° C. or lower, more preferably 130 ° C. or lower, even more preferably 125 ° C. or lower.

【0023】また本発明において、低配向側糸条を自発
伸長糸とし、収縮糸側の収縮応力、強伸度特性等も満足
するには延伸の際の温度条件に加えて延伸倍率も規定す
ることが好ましい。すなわち、未延伸糸の配向度に合わ
せた延伸倍率とすることが好ましく、低配向側糸条に対
する延伸倍率は通常の延伸倍率(延伸糸伸度として30〜
45%程度となるような倍率)と比較すると圧倒的に低い
ものであるが、高配向側糸条に対しては通常倍率程度と
なるよう設定することが好ましいのである。本発明では
未延伸配向度差混繊糸の高配向側糸条と低配向側糸条の
配向度差が充分大きいため、同一延伸倍率でもそれぞれ
の好ましい倍率を同時に満足できるのである。
In the present invention, the low-orientation side yarn is a spontaneously elongated yarn, and in order to satisfy the shrinkage stress and the high elongation characteristics on the shrinking yarn side, the stretching ratio is also defined in addition to the temperature conditions at the time of stretching. Is preferred. That is, it is preferable to set the draw ratio according to the degree of orientation of the undrawn yarn, and the draw ratio for the low-oriented yarn is a normal draw ratio (a drawn yarn elongation of 30 to
Although the ratio is overwhelmingly lower than that of the above-mentioned ratio (45%), it is preferable to set the ratio to approximately the normal ratio for the highly oriented yarn. In the present invention, the difference in the degree of orientation between the high orientation side yarn and the low orientation side yarn of the undrawn orientation difference mixed fiber is sufficiently large, so that the same preferred magnification can be satisfied at the same time.

【0024】PETの場合、未延伸配向度差混繊糸の低
配向側Δnが0.020〜0.065の場合は延伸倍率を1.01〜1.
35とすることにより自発伸長糸を含む収縮差混繊糸とす
ることができる。1.01倍より低倍率となると糸揺れが大
きくなり工程安定性が低下するのみならず、収縮糸側の
収縮応力や強伸度特性が低下し不利なのである。1.35倍
より高倍率では低配向側延伸糸の配向結晶化が進みすぎ
るため自発伸長性を付与するには不利なのである。この
ように、延伸倍率を最適化することにより、工程安定性
が良好となり生産性は高く、また染め斑が少ない品質に
優れた自発伸長糸を得ることができるとともに、収縮応
力や強伸度特性が良好な収縮糸を同時に得ることができ
るのである。例えば、低配向側Δnが 0.052の場合、好
ましい延伸倍率は1.01〜1.10倍、低配向側Δnが 0.039
の場合、好ましい延伸倍率は1.01〜1.25倍である。ま
た、低配向側Δnが 0.020未満の場合はそれに応じて延
伸倍率を高くし、1.05〜2.30倍とすることができる。例
えば低配向側Δnが 0.010の場合、好ましい延伸倍率は
1.30〜1.85倍、低配向側Δnが0.007の場合、好ましい
延伸倍率は1.80〜2.15倍である。また、延伸は一段延伸
でも、多段延伸でも良い。
In the case of PET, when the low-orientation side Δn of the undrawn orientation difference mixed fiber is 0.020 to 0.065, the stretching ratio is set to 1.01 to 1.
By setting it to 35, it is possible to obtain a mixed shrinkage differential yarn including a spontaneously elongated yarn. If the magnification is lower than 1.01, the yarn sway is increased and the process stability is reduced, and the shrinkage stress and the high elongation characteristic on the shrinkable yarn side are disadvantageously reduced. If the magnification is higher than 1.35 times, the oriented crystallization of the low orientation side drawn yarn proceeds too much, which is disadvantageous for imparting spontaneous elongation. In this way, by optimizing the draw ratio, the process stability is improved, the productivity is high, and a spontaneous elongation yarn having excellent quality with few spots of dyeing can be obtained. However, a good shrinkable yarn can be obtained at the same time. For example, when the low orientation side Δn is 0.052, the preferable stretching ratio is 1.01 to 1.10 times, and the low orientation side Δn is 0.039.
In this case, the preferred stretching ratio is 1.01 to 1.25 times. When the low orientation side Δn is less than 0.020, the stretching ratio can be increased accordingly to 1.05 to 2.30 times. For example, when the low orientation side Δn is 0.010, a preferable stretching ratio is
When the low orientation side Δn is 1.30 to 1.85 and the low orientation side Δn is 0.007, the preferable stretching ratio is 1.80 to 2.15. The stretching may be one-stage stretching or multi-stage stretching.

【0025】なお、前記特開平 2-19528号公報には低収
縮糸と高収縮糸からなる収縮差混繊糸の紡糸混繊法が開
示されているが、これは「通常の混繊紡糸延伸により得
ることができる」と記載されていることから、低速紡糸
した後、低収縮糸、高収縮糸とも延伸糸伸度が30〜45%
となるよう高倍率延伸を行うものと解され、低倍率延伸
(自発伸長糸側伸度は約100%以上)を行う本発明とは全
く技術思想が異なるものである。
Japanese Patent Application Laid-Open No. 2-19528 discloses a spinning and blending method of a differential shrinkage yarn composed of a low shrinkage yarn and a high shrinkage yarn. After spinning at a low speed, both the low-shrink yarn and the high-shrink yarn have a stretched yarn elongation of 30 to 45%.
It is understood that high-stretching is performed so that the draw ratio becomes as follows, and the technical idea is completely different from that of the present invention in which low-stretching (the elongation at the spontaneously stretched yarn side is about 100% or more).

【0026】本発明では乾熱収縮率および沸騰水収縮率
は下記式により定義されるものである。
In the present invention, the dry heat shrinkage and the boiling water shrinkage are defined by the following equations.

【0027】 乾熱収縮率(%)=[(L0−L2)/L0)]×100 (1) 沸騰水収縮率(%)=[(L0−L1)/L0)]×100 (2) L0:延伸糸を枷取りし初荷重0.09cN/dtex下で測定した
枷の原長 L1:L0を測定した枷を実質的に荷重フリーの状態で沸
騰水中で15分間処理し、風乾後初荷重0.09cN/dtex下
での枷長 L2:L1を測定した枷をさらに乾熱 160℃で荷重フリー
の状態で15分間処理し、風乾後初荷重0.09cN/dtex下で
の枷長 そして、本発明でいう自発伸長性とは、乾熱収縮率が 0
%以下の値を示すことをいう。好ましくは、乾熱収縮率
-5〜0%であれば、ソフトでふくらみ感に優れたポリエス
テル織編物を得ることができる。より好ましくは乾熱収
縮率は-1.5%以下である。
Dry heat shrinkage (%) = [(L 0 −L 2 ) / L 0 )] × 100 (1) Boiling water shrinkage (%) = [(L 0 −L 1 ) / L 0 )] × 100 (2) L 0 : The original length of the shackle measured under an initial load of 0.09 cN / dtex after shackling the drawn yarn. L 1 : The shackle measured with L 0 is substantially free of load in boiling water for 15 minutes. For 1 minute, air-dried, and shackle length under an initial load of 0.09 cN / dtex L 2 : The shackle whose L 1 was measured was further processed for 15 minutes at 160 ° C. in a dry heat-free state, and an initial load of 0.09 cN / d Shackle length under dtex Spontaneous elongation in the present invention means that the dry heat shrinkage rate is 0
%. Preferably, the dry heat shrinkage
If it is -5 to 0%, it is possible to obtain a soft and swelled polyester woven / knitted fabric. More preferably, the dry heat shrinkage is -1.5% or less.

【0028】また、沸騰水収縮率1%以下であれば、布帛
の精練から乾熱セットでの自発伸長を低く抑えられるの
で品位良好な布帛が得られるのである。沸騰水収縮率が
1%を越えると精練から乾熱セットでの自発伸長が大きく
なりすぎ、布帛表面に浮き出る自発伸長糸のループが乱
れた形となり布帛の品位が低下してしまう。好ましくは
沸騰水収縮率は0%以下である。
If the boiling water shrinkage is 1% or less, spontaneous elongation in a dry heat set from scouring of the fabric can be suppressed to a low level, so that a good quality fabric can be obtained. Boiling water shrinkage
If it exceeds 1%, spontaneous elongation in the dry heat setting from scouring becomes too large, and the loop of spontaneously elongated yarns floating on the surface of the fabric is disturbed, and the quality of the fabric deteriorates. Preferably, the boiling water shrinkage is 0% or less.

【0029】本発明では延伸糸の配向結晶化を延伸条件
によりコントロールし、自発伸長性を付与している。そ
のため自発伸長糸の密度は1.360g/cm3以下とすることが
好ましい。密度がこれより大きくなると、糸の結晶化が
過度に進行しているため自発伸長性付与には不利なので
ある。より好ましくは密度は1.358g/cm3以下である。ま
た、結晶化の程度が低すぎても繊維の収縮を支配する配
向非晶分子鎖の固定が不十分となるため、好ましくは密
度は1.348g/cm3以上である。また、自発伸長糸の複屈折
度は実質的に延伸を施しているため、元糸である低配向
側未延伸糸の値よりも高くなる。
In the present invention, spontaneous elongation is imparted by controlling the oriented crystallization of the drawn yarn by the drawing conditions. Therefore, the density of the spontaneously elongated yarn is preferably 1.360 g / cm 3 or less. If the density is higher than this, the crystallization of the yarn proceeds excessively, which is disadvantageous for imparting spontaneous elongation. More preferably, the density is 1.358 g / cm 3 or less. Further, even if the degree of crystallization is too low, the fixation of the oriented amorphous molecular chains which governs the contraction of the fiber becomes insufficient, so that the density is preferably 1.348 g / cm 3 or more. Further, the birefringence of the spontaneously elongated yarn is substantially higher than that of the original yarn, ie, the unoriented yarn on the low orientation side, because the yarn is stretched.

【0030】また、本発明では、自発伸長糸と収縮糸の
糸長差を充分確保し織物のふくらみ感を満足するために
は、布帛中の糸長差を大きくするため自発伸長糸と収縮
糸の乾熱収縮率差は10% 以上とすることが好ましい。よ
り好ましくは15% 以上、さらに好ましくは20% 以上であ
る。ただし、糸長差が大きすぎるとふかつき、しわ等の
原因となるので、自発伸長糸と収縮糸の乾熱収縮率差は
40% 以下とすることが好ましい。
In the present invention, in order to ensure a sufficient yarn length difference between the spontaneously elongated yarn and the shrinkable yarn and to satisfy the feeling of swelling of the woven fabric, the spontaneously elongated yarn and the shrinkable yarn are used to increase the yarn length difference in the fabric. Is preferably 10% or more. It is more preferably at least 15%, further preferably at least 20%. However, if the difference in yarn length is too large, it may cause flapping and wrinkles.
It is preferable to set it to 40% or less.

【0031】このため、収縮糸の乾熱収縮率は8%以上で
あることが好ましい。収縮糸の乾熱収縮率は15% 以上で
あれば、さらにふくらみ感が優れているため好ましい。
ここで、高配向側糸条を構成するポリマが低配向側糸条
を構成するポリマよりも高収縮性ポリマであれば、収縮
糸の乾熱収縮率の向上のために有利である。IPA を共重
合したポリエステルからなる収縮糸を用いると、収縮率
がホモポリマの場合に比べ向上し好ましい。IPAの共重
合率は3〜12mol%であれば充分高収縮性の繊維を得るこ
とができる。より好ましくは共重合率は5〜10mol% であ
る。また、前記特開平2-19528号公報記載のように、IPA
共重合ポリエステルにさらにBHPP等を共重合し、より高
収縮化することも可能である。
Therefore, the dry heat shrinkage of the shrinkable yarn is preferably 8% or more. It is preferable that the dry heat shrinkage of the shrinkable yarn is 15% or more, since the swelling feeling is further excellent.
Here, if the polymer constituting the high orientation side yarn is a polymer having higher shrinkage than the polymer constituting the low orientation side yarn, it is advantageous for improving the dry heat shrinkage of the shrinkable yarn. It is preferable to use a shrink yarn made of polyester obtained by copolymerizing IPA, since the shrinkage is improved as compared with a homopolymer. If the copolymerization ratio of IPA is 3 to 12 mol%, a fiber with sufficiently high shrinkage can be obtained. More preferably, the copolymerization ratio is 5 to 10 mol%. Further, as described in JP-A-2-19528, IPA
BHPP or the like can be further copolymerized with the copolymerized polyester to further increase the shrinkage.

【0032】また、ポリエステル収縮糸の収縮後自発伸
長率が0〜5% であれば、さらにソフトでしかも反発感の
ある風合いとなり好ましい。ただし、収縮後自発伸長率
とは[(L2−L1)/L1 ]×100で定義される。そ
して、自発伸長率の測定と同様の熱処理を収縮糸に施し
たとき、沸騰水中で収縮させた後に測定した枷長を
1、それからさらに乾熱収縮させた後の枷長をL2とす
る。
If the spontaneous elongation percentage after shrinkage of the polyester shrink yarn is 0 to 5%, a softer and more resilient texture is preferable. However, the spontaneous elongation rate after contraction is defined as [(L 2 −L 1 ) / L 1 ] × 100. When the same heat treatment as in the measurement of the spontaneous elongation rate is performed on the shrink yarn, the length of the shackle measured after shrinking in boiling water is L 1 , and the length of the shackle after further shrinking by dry heat is L 2 . .

【0033】また、ポリエステル収縮糸としてPPTや
PBT等のストレッチ性に優れる繊維を使用すると、P
ETとはまた異なったソフトで反発感のある風合いとな
り好ましい。
When a fiber having excellent stretchability such as PPT or PBT is used as the polyester shrink yarn, the P
ET is also different from ET and has a soft and resilient texture, which is preferable.

【0034】本発明では繊維断面形状は特に限定される
ものではないが、収縮差混繊糸の鞘糸となる自発伸長
糸、すなわち未延伸配向度差混繊糸において低配向側の
繊維を三角断面や四角断面、または多葉断面形状等の異
形断面形状とするとドライタッチとすることができる。
In the present invention, the cross-sectional shape of the fiber is not particularly limited, but the spontaneously stretched yarn serving as the sheath yarn of the shrinkage-differential mixed yarn, that is, the low-oriented fiber in the undrawn orientated mixed yarn, has a triangular shape. A dry touch can be obtained by using an irregular cross-sectional shape such as a cross-section, a square cross-section, or a multi-leaf cross-section.

【0035】本発明の収縮差混繊糸の自発伸長糸と収縮
糸の混繊割合は特に限定されるものではないが、布帛中
での収縮挙動のバランスを考慮すると繊度比率で10/90
〜90/10とすることが好ましい。より好ましくは30/70〜
70/30である。
The blending ratio of the spontaneously elongated yarn and the shrinking yarn of the shrinkage difference blended yarn of the present invention is not particularly limited, but considering the balance of shrinkage behavior in the fabric, the fineness ratio is 10/90.
It is preferably set to 90/10. More preferably 30/70 ~
70/30.

【0036】単繊維繊度範囲についても特に限定はない
が、延伸後の自発伸長糸は0.5〜3.0dtex、収縮糸は2.0
〜6.0dtexとすればパウダータッチでしかも張り腰のあ
る布帛が得られる。一方、延伸後の自発伸長糸は3.0〜
6.0dtex、収縮糸は2.0〜3.0dtexとすればソフトでしか
も弾発性に富む布帛が得られる。
Although the single fiber fineness range is not particularly limited, the spontaneously elongated yarn after drawing is 0.5 to 3.0 dtex and the shrinking yarn is 2.0.
If it is set to ~ 6.0 dtex, a fabric with powder touch and firmness can be obtained. On the other hand, the spontaneously elongated yarn after stretching is 3.0 ~
If 6.0 dtex and shrinkable yarn are 2.0 to 3.0 dtex, a soft and highly resilient cloth can be obtained.

【0037】また、本発明の収縮差混繊糸は集束性の点
からエア交絡や撚糸が施されていることが好ましい。特
に、エア交絡は紡糸過程で巻き取り間での間に施すと工
程省略となり好ましい。ただし、高率の交絡や撚糸を施
す場合は延伸後行うことが好ましい。
The mixed shrinkage differential yarn of the present invention is preferably air-entangled or twisted from the viewpoint of convergence. In particular, it is preferable to apply the air entanglement between the windings in the spinning process because the process is omitted. However, it is preferable to carry out after stretching when high-confound entanglement or twisting is performed.

【0038】延伸装置としては公知のものが使用でき
る。少なくとも1対のホットローラーを有する延伸機を
使用すれば、さらに工程が安定化する。ここでいう1対
のホットローラーとは、延伸前の予熱のための第1ホッ
トローラーと延伸後の熱セットのための第2ホットロー
ラーのことをいうものとする。これに、コールドドロー
ローラー、多段延伸のためのホットローラーが付属して
いても差し支えない。なお、予熱および/または熱セッ
トに熱板を使用することも不可能ではないが、熱板/糸
条の擦過により糸切れが発生したり、熱板と糸条のステ
ィックスリップにより糸斑が発生しやすくなるのであ
る。加えて、延伸速度をそれほど上げることもできな
い。
A known stretching device can be used. The use of a stretching machine having at least one pair of hot rollers further stabilizes the process. Here, the pair of hot rollers means a first hot roller for preheating before stretching and a second hot roller for heat setting after stretching. A cold draw roller and a hot roller for multi-stage stretching may be attached to this. Although it is not impossible to use a hot plate for preheating and / or heat setting, thread breakage occurs due to rubbing of the hot plate / yarn and yarn spots occur due to stick-slip between the hot plate and the yarn. It becomes easier. In addition, the stretching speed cannot be so increased.

【0039】また、通常の紡糸−延伸2工程法の代わり
に紡糸直接延伸法を採用すると、さらに生産性が向上し
好ましい。
Further, it is preferable to employ a direct spinning method instead of the usual two-step spinning-drawing method because productivity is further improved.

【0040】なお、特開昭57-143522号 公報にはPET
にポリスチレンをブレンドしたポリマと共重合PETの
紡糸混繊糸を同時延伸または同時延伸仮撚することが開
示されているが、実施例では高配向側糸条も低配向側糸
条も収縮しており、自発伸長糸については何ら記載も示
唆もされていない。本発明では、低配向側糸条を自発伸
長糸とすることに意味があるものであり、該技術とは明
らかに区別されるのである。また、特開昭56-140130号
公報には自然延伸比が異なる糸条を混繊し同時延伸する
方法が開示されているが、これは延伸の際の弾性回復率
差を利用して糸長差を付与するものであり、収縮率差を
利用する本発明とは本質的にコンセプトが異なるもので
ある。当然、収縮率についても混繊糸全体の値しか記載
されておらず、自発伸長糸については何ら示唆されてい
ない。しかも、実施例では後混繊法を用いており、紡糸
混繊法にメリットがある本発明とは明らかに異なるもの
である。また、延伸温度が130〜150℃であり、本発明の
好ましい形態とも明らかに異なるのである。
Note that Japanese Patent Application Laid-Open No. 577-143522 discloses a PET.
It is disclosed that a polymer blended with polystyrene and a spun blended yarn of copolymerized PET are simultaneously drawn or false-twisted, but in Examples, both the high orientation side yarn and the low orientation side yarn shrink. There is no description or suggestion of spontaneously elongated yarn. In the present invention, it is meaningful that the low orientation side yarn is a spontaneously elongated yarn, which is clearly distinguished from the technology. Also, JP-A-56-140130
The gazette discloses a method in which yarns having different natural stretching ratios are mixed and simultaneously stretched.However, this method uses a difference in elastic recovery rate during stretching to impart a yarn length difference, and shrinks. The concept is essentially different from the present invention utilizing the rate difference. As a matter of course, only the value of the entire mixed fiber is described for the shrinkage rate, and nothing is suggested for the spontaneously elongated yarn. In addition, in the examples, the post-fiber mixing method is used, which is clearly different from the present invention which is advantageous in the spinning fiber mixing method. Further, the stretching temperature is 130 to 150 ° C., which is clearly different from the preferred embodiment of the present invention.

【0041】ところで、特開平9-21028号 公報等に記載
されているように、従来は未延伸糸を実質的に延伸する
と自発伸長性を付与することはできないとされていた。
しかし、本発明では延伸条件を特定し、配向結晶化をコ
ントロールすることにより自発伸長性を付与することが
できるのである。延伸糸での自発伸長メカニズムはよく
わからないが、精練、中間セット等での熱処理によりポ
リエステル分子鎖が再配列することが関係しているもの
と思われる。そのため、前駆体としての延伸糸を適度な
配向結晶化状態にしておくことが必要である。
By the way, as described in Japanese Patent Application Laid-Open No. 9-21028 and the like, it has been conventionally considered that spontaneous elongation cannot be imparted when an undrawn yarn is substantially drawn.
However, in the present invention, spontaneous elongation can be imparted by specifying stretching conditions and controlling oriented crystallization. Although the spontaneous elongation mechanism of the drawn yarn is not well understood, it is thought to be related to the rearrangement of the polyester molecular chains due to heat treatment in scouring, intermediate setting and the like. Therefore, it is necessary to keep the drawn yarn as a precursor in an appropriately oriented and crystallized state.

【0042】本発明により得られた繊維は、トータル繊
度が30〜110dtex であればブラウス等の薄地用途、それ
以上の繊度のものはスーツ、ジャケット、パンツ、コー
ト等の中厚地用途に好適に用いることができる。
The fiber obtained according to the present invention is preferably used for thin fabrics such as blouses if the total fineness is 30 to 110 dtex, and is preferably used for medium-thick fabrics such as suits, jackets, pants and coats if the total fineness is 30 to 110 dtex. be able to.

【0043】[0043]

【実施例】以下、本発明を実施例を用いて詳細に説明す
る。なお、実施例中の測定方法は以下の方法を用いた。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments. In addition, the measuring method in the Example used the following method.

【0044】A.極限粘度[η] オルソクロロフェノール中25℃で測定した。A. Intrinsic viscosity [η] Measured in orthochlorophenol at 25 ° C.

【0045】B.乾熱収縮率および沸騰水収縮率 乾熱収縮率(%)=[(L0−L2)/L0)]×100 沸騰水収縮率(%)=[(L0−L1)/L0)]×100 L0:延伸糸を枷取りし初荷重0.09cN/dtex下で測定した
枷の原長 L1:L0を測定した枷を実質的に荷重フリーの状態で沸
騰水中で15分間処理し、風乾後初荷重0.09cN/dtex下で
の枷長 L2:L1を測定した枷をさらに乾熱160℃で荷重フリー
の状態で 15処理し、風乾後初荷重0.09cN/dtex 下での
枷長 C.強度および伸度 初期試料長=50mm、引っ張り速度=50mm/分とし、JIS L
1013に示される条件で荷重−伸長曲線を求めた。次に荷
重値を初期の繊度で割り、それを強度とし、伸びを初期
試料長で割り伸度とした。
B. Dry heat shrinkage rate and a boiling water shrinkage dry heat shrinkage (%) = [(L 0 -L 2) / L 0)] × 100 boiling water shrinkage (%) = [(L 0 -L 1) / L 0 )] × 100 L 0 : The original length of the shackle measured under an initial load of 0.09 cN / dtex after shackling the drawn yarn. L 1 : The shackle measured at L 0 is substantially free of load in boiling water for 15 minutes. min treated, air-dried initial load 0.09CN / shackles length at dtex under L 2: L 1 and 15 treated in the state of a load-free shackles further dry heat 160 ° C. were measured, dried in air initial load 0.09CN / dtex Shackle length below. Strength and elongation Initial sample length = 50 mm, tensile speed = 50 mm / min, JIS L
The load-elongation curve was determined under the conditions shown in 1013. Next, the load value was divided by the initial fineness, which was taken as the strength, and the elongation was divided by the initial sample length to obtain the elongation.

【0046】D複屈折度 OLIMPUS BH-2偏光顕微鏡により単糸のレターデーション
と光路長を測定し、Δnを求めた。芯鞘複合糸の鞘PE
T部分のΔnは特開平9-176920号公報記載の方法で測定
した。また、異形断面糸、およびポリマブレンド糸のP
ET部分のΔnについては直接測定することが困難なの
で、ホモPETまたはIPA8mol%共重合PETまたはIPA8
mol%またはBHPP3.5mol%共重合PETを単独紡糸により1
08dtex、36フィラメント、紡糸速度1000m/分〜6000m/分
で変化させた以外は、後述する実施例1と同様の条件で
紡糸した丸断面繊維の複屈折度と伸度の関係(図1〜
3)から見積もった。
D Birefringence The retardation and optical path length of a single yarn were measured with an OLIMPUS BH-2 polarizing microscope, and Δn was determined. Sheath PE of core-sheath composite yarn
The Δn of the T portion was measured by the method described in JP-A-9-176920. In addition, the modified cross-section yarn and polymer blend yarn P
Since it is difficult to directly measure Δn of the ET portion, homo PET or IPA8 mol% copolymerized PET or IPA8
mol% or 3.5 mol% BHPP copolymerized PET by single spinning.
Relationship between birefringence and elongation of round cross-section fiber spun under the same conditions as in Example 1 described below, except that 08dtex, 36 filaments, and spinning speed were changed at 1000 m / min to 6000 m / min (FIGS.
Estimated from 3).

【0047】E.密度 ASTM D1505-63T記載のように、臭化ナトリウム水溶液に
よる密度勾配管により25℃で測定を行った。そして、酸
化チタン密度を3.84g/cm3 として密度補正を行い、PE
T部分のみの密度を求めた。また、ブレンド繊維、複合
繊維についてはブレンドポリマまたは複合ポリマの密度
と含有重量%により密度補正を行い、PET部分のみの
密度を求めた。
E. Density As described in ASTM D1505-63T, the measurement was performed at 25 ° C. using a density gradient tube using an aqueous sodium bromide solution. Then, the density was corrected by setting the titanium oxide density to 3.84 g / cm 3 , and PE
The density of only the T portion was determined. For the blend fiber and the composite fiber, the density was corrected based on the density and the content% by weight of the blend polymer or the composite polymer, and the density of only the PET portion was obtained.

【0048】F.収縮応力 カネボウエンジニアリング社製熱応力測定器で、昇温速
度150℃/分で測定した。サンプルは10cm×2のループと
し、初期張力は繊度(デシテックス)×0.9×(1/30)と
した。
F. Shrinkage stress Measured at a heating rate of 150 ° C./min with a thermal stress meter manufactured by Kanebo Engineering Co., Ltd. The sample was a loop of 10 cm × 2, and the initial tension was fineness (decitex) × 0.9 × (1/30).

【0049】実施例1 高配向側として極限粘度0.63のホモPET(酸化チタン
含有せず)、低配向側として該ホモPETとポリスチレ
ン(旭化成社製“スタイロン”685)を別々に該ホモ
PETは285℃、該ポリスチレンは210℃で溶融し、絶対
濾過径15μのステンレス製不織布フィルターを用い別々
に濾過を行った後、孔径0.25mm、孔長0.4mm、孔数36 の
口金から吐出した。この時、低配向側は芯/鞘=ポリス
チレン(5.0重量%)/PET(95重量%)の芯鞘複合糸
とした(以下PS/PET複合糸と略す)。そして、紡
糸温度288℃、紡糸速度5000m/分で72dtex、36フィラメ
ントの未延伸混繊糸を巻き取った。この時、高収縮側、
低収縮側とも同一繊度、同一フィラメント数(36dtex-1
8フィラメントずつ)とした。高配向側では複屈折度0.08
5、伸度70%、低配向側では複屈折度0.033、伸度180%で
あった。
Example 1 A homo-PET having an intrinsic viscosity of 0.63 (without titanium oxide) was used as the high orientation side, and the homo-PET and polystyrene ("Stylon" 685 manufactured by Asahi Kasei Co., Ltd.) were separately used as the low orientation side. The polystyrene was melted at 210 ° C. and filtered separately using a stainless steel non-woven fabric filter having an absolute filtration diameter of 15 μm, and then discharged from a die having a hole diameter of 0.25 mm, a hole length of 0.4 mm and 36 holes. At this time, the core / sheath = polystyrene (5.0% by weight) / PET (95% by weight) core-sheath composite yarn on the low orientation side (hereinafter abbreviated as PS / PET composite yarn). Then, at a spinning temperature of 288 ° C. and a spinning speed of 5000 m / min, a 72 dtex, 36-filament undrawn mixed fiber was wound. At this time, the high contraction side,
The same fineness and the same number of filaments (36dtex-1
8 filaments). Birefringence 0.08 on high orientation side
5, elongation 70%, birefringence 0.033 and elongation 180% on low orientation side.

【0050】上記未延伸配向度差混繊糸を図4の1対の
ホットーローラーを有する延伸機を用い、第1ホットー
ローラー3の温度90℃、延伸速度(第2ホットローラー
4の周速度)800/m分、延伸倍率1.10 とし、第2ホット
ローラー4の温度を表1の如く変化させて延伸を行った
(実験No.1〜3)。第2ホットローラー4と糸条と
の接触時間は0.15秒であった。
Using a stretching machine having a pair of hot rollers as shown in FIG. 4, the unstretched mixed yarn having a difference in the degree of orientation is stretched at a temperature of 90 ° C. of the first hot roller 3 and at a stretching speed (the circumference of the second hot roller 4). Stretching was performed while changing the temperature of the second hot roller 4 as shown in Table 1 at a speed of 800 / m and a draw ratio of 1.10 (Experiment Nos. 1 to 3). The contact time between the second hot roller 4 and the yarn was 0.15 seconds.

【0051】第2ホットローラー温度が110℃ 以上であ
れば、低配向側糸条が自発伸長性を示し、高配向側糸条
の収縮応力、強伸度特性も良好であることがわかる(表
2)。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
When the temperature of the second hot roller is 110 ° C. or higher, the low orientation side yarn exhibits spontaneous elongation, and the high orientation side yarn has good shrinkage stress and high elongation characteristics. 2). In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0052】なお、各成分の単独未延伸糸条は、他方の
糸条をアスピレーターで吸引分離することにより得た。
そしてそれを別々に延伸することにより各成分の単独延
伸糸を得ることができた。そして、それらを種々の測定
にかけることにより各成分単独での物性値を求めること
ができた。以下の実施例、比較例も同様に各成分単独で
の物性値を求めた。
The single undrawn yarn of each component was obtained by suction-separating the other yarn with an aspirator.
Then, by drawing them separately, single drawn yarns of each component could be obtained. By subjecting them to various measurements, the physical properties of each component alone could be determined. In the following Examples and Comparative Examples, the physical properties of each component alone were similarly obtained.

【0053】比較例1 第2ホットローラー温度を100℃ とした以外は実施例1
と同様の条件で延伸を行った(実験No.4)。物性値
は表1に示す。第2ホットローラー4の温度が低すぎる
ため低配向側糸条も収縮してしまい、自発伸長性を付与
することはできなかった(表2)。
Comparative Example 1 Example 1 except that the temperature of the second hot roller was set to 100 ° C.
(Experiment No. 4). The physical properties are shown in Table 1. Since the temperature of the second hot roller 4 was too low, the low-orientation side yarn also shrunk, and spontaneous elongation could not be imparted (Table 2).

【0054】[0054]

【表1】 [Table 1]

【表2】 実施例2 第2ホットローラー4の温度を120℃、延伸倍率1.10
倍、第1ホットローラー3の温度を表3の如く変更した
以外は実施例1と同様の条件で延伸を行った(実験N
o.5〜9)。物性値は表4に示す。第1ホットローラ
ー3の温度が110℃以下であれば低配向側糸条は自発伸
長性を示すことがわかる。また、延伸時の糸揺れ、糸切
れ等も無く問題なく製糸できた。またドッフ後の再スタ
ート成功率も良好であった。また、染色斑もほとんど無
く品位の高いものであった。
[Table 2] Example 2 The temperature of the second hot roller 4 was set to 120 ° C., and the stretching ratio was 1.10.
The stretching was performed under the same conditions as in Example 1 except that the temperature of the first hot roller 3 was changed as shown in Table 3 (Experiment N).
o. 5-9). Table 4 shows the physical property values. When the temperature of the first hot roller 3 is 110 ° C. or less, it is understood that the low-oriented side yarn exhibits spontaneous elongation. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0055】ただし、第1ホットローラー3の温度が30
℃の場合は問題になるほどではないが若干染色斑が発生
した。また、第1ホットローラー3の温度が100℃ 以上
となると若干糸揺れが発生し、自発伸長率も低めとなっ
た。
However, if the temperature of the first hot roller 3 is 30
In the case of ° C., although not so much as to cause a problem, slight staining spots occurred. Further, when the temperature of the first hot roller 3 was 100 ° C. or more, the yarn was slightly shaken, and the spontaneous elongation rate was low.

【0056】比較例2 第1ホットローラー4の温度を120℃ とした以外は実施
例2と同様の条件で延伸を行った(実験No.10)。
物性値は表4に示す。第1ホットローラー3の温度が高
すぎるため低配向側糸条も収縮してしまい、自発伸長性
を付与することはできなかった。
Comparative Example 2 Stretching was performed under the same conditions as in Example 2 except that the temperature of the first hot roller 4 was set to 120 ° C. (Experiment No. 10).
Table 4 shows the physical property values. Since the temperature of the first hot roller 3 was too high, the low-orientation side yarn also contracted, and spontaneous elongation could not be imparted.

【0057】[0057]

【表3】 [Table 3]

【表4】 実施例3 紡糸速度を4000m/分、低配向側の芯ポリマをポリスチレ
ンからポリメチルペンテン(三井石化社製“TPX”RT-1
8)に変更し複合比も2重量%、さらに吐出量を変更し、
混繊糸で 92dtex-36フィラメントとした以外は実施例1
と同様の条件で未延伸混繊糸を巻き取った。この時、高
配向側では複屈折度0.066、伸度95%、低配向側では複屈
折度0.020、伸度215%であった。
[Table 4] Example 3 The spinning speed was 4000 m / min, and the core polymer on the low orientation side was polystyrene to polymethylpentene (“TPX” RT-1 manufactured by Mitsui Ishika Co., Ltd.).
8), the composite ratio was 2% by weight, and the discharge rate was changed.
Example 1 except that the mixed yarn was 92dtex-36 filament
The undrawn mixed fiber was wound under the same conditions as described above. At this time, the birefringence was 0.066 and the elongation was 95% on the high orientation side, and 0.020 and 215% on the low orientation side.

【0058】この未延伸混繊糸を第2ホットローラー温
度120 ℃、延伸倍率を表5の如く変化させた以外は実施
例1と同様の条件で延伸を行った(実験No.11〜1
2)。物性値は表6に示す。延伸倍率が1.35倍以下であ
れば、低配向側糸条が自発伸長性を示し、高配向側糸条
の収縮応力、強伸度特性も良好であることがわかる。ま
た、延伸時の糸揺れ、糸切れ等も無く問題なく製糸でき
た。またドッフ後の再スタート成功率も良好であった。
また、染色斑もほとんど無く品位の高いものであった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was changed as shown in Table 5 (Experiments Nos. 11 to 1).
2). Table 6 shows the physical property values. When the draw ratio is 1.35 or less, it is understood that the low orientation side yarn exhibits spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good.
In addition, it was of high quality with almost no staining spots.

【0059】比較例3 延伸倍率を1.40倍とした以外は実施例3と同様の条件で
延伸を行った(実験No.13)。物性値は表6に示
す。延伸倍率が高すぎるため延伸糸は逆に収縮してしま
い、自発伸長性を付与することはできなかった。
Comparative Example 3 Stretching was performed under the same conditions as in Example 3 except that the stretching ratio was 1.40 (Experiment No. 13). Table 6 shows the physical property values. Since the draw ratio was too high, the drawn yarn shrunk conversely, and it was impossible to impart spontaneous elongation.

【0060】[0060]

【表5】 [Table 5]

【表6】 実施例4 紡糸速度を3500m/分、吐出量を変更し混繊糸で 99dtex-
36フィラメントとした以外は実施例1と同様の条件で未
延伸混繊糸を巻き取った。この時、高配向側では複屈折
度0.055、伸度123%、低配向側では複屈折度0.010、伸度
295%であった。
[Table 6] Example 4 The spinning speed was 3500 m / min, the discharge rate was changed, and 99dtex-
An undrawn mixed fiber was wound under the same conditions as in Example 1 except that the filament was 36 filaments. At this time, the birefringence of 0.055 and elongation of 123% on the high orientation side, and the birefringence of 0.010 and elongation on the low orientation side
It was 295%.

【0061】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.48倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.14)。物性値は
表8に示すが、低配向側糸条が自発伸長性を示し、高配
向側糸条の収縮応力、強伸度特性も良好であることがわ
かる。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.48 (Experiment No. 14). The physical property values are shown in Table 8, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0062】実施例5 高配向側として極限粘度0.63のホモPET(酸化チタン
含有せず)、低配向側として該ホモPETと5−ナトリ
ウムスルホイソフタル酸を 6.5mol%共重合したPETを
15重量%チップブレンドしたポリマ(以下SSIAブレンド
PETと略す)を別々に285℃で溶融し、吐出量を変更
し、紡糸速度3000m/分で紡糸した以外は実施例1と同
様の条件で紡糸し、72dtex、36フィラメントの未延伸混
繊糸を巻き取った。高配向側では複屈折度0.035、伸度1
80%、低配向側では複屈折度0.007、伸度420%であった。
Example 5 Homo PET having an intrinsic viscosity of 0.63 (without titanium oxide) as the high orientation side, and PET obtained by copolymerizing 6.5 mol% of the homo PET and 5-sodium sulfoisophthalic acid as the low orientation side.
Spinning was carried out under the same conditions as in Example 1 except that the polymer blended with 15 wt% chip blend (hereinafter abbreviated as SSIA blend PET) was separately melted at 285 ° C., the discharge rate was changed, and the fiber was spun at a spinning speed of 3000 m / min. , 72 dtex, and 36 filaments of an undrawn mixed yarn. 0.035, elongation 1 on high orientation side
The birefringence was 0.007 and the elongation was 420% on the low orientation side at 80%.

【0063】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を2.00倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.15)。物性値は
表8に示すが、低配向側糸条が自発伸長性を示し、高配
向側糸条の収縮応力、強伸度特性も良好であることがわ
かる。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was set to 120 ° C. and the draw ratio was set to 2.00 (Experiment No. 15). The physical property values are shown in Table 8, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0064】実施例6 高配向側として極限粘度0.63のホモPET(酸化チタン
含有せず)にポリプロピレンを15重量%チップブレンド
したポリマ(以下PPブレンドPETと略す)、低配向側
として該ホモPETを別々に 285℃で溶融した以外は実
施例5と同様の条件で紡糸し、72dtex、36フィラメント
の未延伸混繊糸を巻き取った。高配向側では複屈折度0.
085、伸度71%、低配向側では複屈折度0.035、伸度180%
であった。
Example 6 A polymer (hereinafter abbreviated as PP blend PET) in which 15% by weight of polypropylene was blended with homo-PET (not containing titanium oxide) having an intrinsic viscosity of 0.63 as a high orientation side, and the homo-PET was used as a low orientation side. Spinning was carried out under the same conditions as in Example 5 except that the mixture was melted separately at 285 ° C., and a 72 dtex, 36 filament undrawn mixed fiber was wound. The birefringence is 0 on the high orientation side.
085, elongation 71%, birefringence 0.035, elongation 180% on low orientation side
Met.

【0065】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.20倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.16)。物性値は
表8に示すが、低配向側糸条が自発伸長性を示し、高配
向側糸条の収縮応力、強伸度特性も良好であることがわ
かる。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.20 (Experiment No. 16). The physical property values are shown in Table 8, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0066】実施例7 低配向側としてトリメリット酸トリメチルを0.10mol%共
重合したPET(以下TMTM共重合PETと略す)を用いた
以外は実施例6と同様の条件で紡糸し、90dtex、36フィ
ラメントの未延伸混繊糸を巻き取った。高配向側では複
屈折度 0.085、伸度71%、低配向側では複屈折度0.02
7、伸度220%であった。
Example 7 Spinning was carried out under the same conditions as in Example 6, except that PET obtained by copolymerizing 0.10 mol% of trimethyl trimellitate (hereinafter abbreviated as TMTM copolymerized PET) was used as the low orientation side. The undrawn mixed yarn of the filament was wound up. Birefringence 0.085, elongation 71% on high orientation side, birefringence 0.02 on low orientation side
7. The elongation was 220%.

【0067】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.35倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.17)。物性値は
表8に示すが、低配向側糸条が自発伸長性を示し、高配
向側糸条の収縮応力、強伸度特性も良好であることがわ
かる。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.35 times (Experiment No. 17). The physical property values are shown in Table 8, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0068】実施例8 低配向側としてポリエチレングリコールを8.0重量%共重
合したPET(以下PEG共重合PETと略す)を用いた以外
は実施例6と同様の条件で紡糸し、90dtex、36フィラメ
ントの未延伸混繊糸を巻き取った。高配向側では複屈折
度0.085、伸度71%、低配向側では複屈折度0.023、伸度2
20%であった。
Example 8 Spinning was performed under the same conditions as in Example 6 except that PET obtained by copolymerizing 8.0% by weight of polyethylene glycol (hereinafter abbreviated as PEG copolymerized PET) was used as the low-orientation side. The undrawn mixed fiber was wound. Birefringence 0.085, elongation 71% on high orientation side, birefringence 0.023, elongation 2 on low orientation side
20%.

【0069】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.35倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.18)。物性値は
表8に示すが、低配向側糸条が自発伸長性を示し、高配
向側糸条の収縮応力、強伸度特性も良好であることがわ
かる。また、延伸時の糸揺れ、糸切れ等も無く問題なく
製糸できた。またドッフ後の再スタート成功率も良好で
あった。また、染色斑もほとんど無く品位の高いもので
あった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was set to 120 ° C. and the draw ratio was set to 1.35 (Experiment No. 18). The physical property values are shown in Table 8, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn has good shrinkage stress and strong elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0070】[0070]

【表7】 [Table 7]

【表8】 実施例9 高配向側として極限粘度0.65のIPA8.0mol%共重合PET
(酸化チタン含有せず)にポリプロピレンを15重量%チ
ップブレンドしたポリマ、低配向側として該ホモPET
を別々に285℃で溶融した以外は実施例5と同様の条件
で紡糸し、72dtex、36フィラメントの未延伸混繊糸を巻
き取った。高配向側では複屈折度0.064、伸度72%、低配
向側では複屈折度0.035、伸度180%であった。
[Table 8] Example 9 8.0 mol% copolymerized IPA with intrinsic viscosity of 0.65 as the high orientation side
A polymer obtained by blending 15% by weight of polypropylene with titanium oxide (not containing titanium oxide).
Were melted at 285 ° C. separately, and spun under the same conditions as in Example 5 to wind a 72 dtex, 36-filament undrawn mixed fiber. The birefringence was 0.064 and elongation 72% on the high orientation side, and 0.035 and 180% on the low orientation side.

【0071】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.20倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.19)。物性値は
表10に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。さらに、収縮糸の収縮率が実施例1〜6の場合
よりも大幅に高くなり、よりふくらみ感のある収縮差混
繊糸が得られた。また、延伸時の糸揺れ、糸切れ等も無
く問題なく製糸できた。またドッフ後の再スタート成功
率も良好であった。また、染色斑もほとんど無く品位の
高いものであった。
The undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.20 (Experiment No. 19). The physical property values are shown in Table 10, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn also has good shrinkage stress and high elongation characteristics. Furthermore, the shrinkage rate of the shrinkable yarn was significantly higher than in the case of Examples 1 to 6, and a shrinkage difference mixed fiber yarn having a more bulging feeling was obtained. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0072】実施例10 高配向側として極限粘度0.65のIPA8.0mol%共重合PET
(酸化チタン含有せず)、低配向側として実施例5で用
いたSSIAブレンドPETとした以外は実施例9と同様の
条件で紡糸し、72dtex、36フィラメントの未延伸混繊糸
を巻き取った。高配向側では複屈折度0.031、伸度170
%、低配向側では複屈折度0.010、伸度350%であった。
Example 10 8.0 mol% IPA copolymerized PET having an intrinsic viscosity of 0.65 as the high orientation side
Spinning was performed under the same conditions as in Example 9 except that the low orientation side was made of the SSIA blend PET used in Example 5 (without titanium oxide), and an undrawn mixed fiber of 72 dtex and 36 filaments was wound. . 0.031, elongation 170 on high orientation side
%, And on the low orientation side, the birefringence was 0.010 and the elongation was 350%.

【0073】この未延伸混繊糸を第2ホットローラー温
度120℃、延伸倍率を1.80倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.20)。物性値は
表10に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。さらに、収縮糸の収縮率が実施例1〜6の場合
よりも大幅に高くなり、よりふくらみ感のある収縮差混
繊糸が得られた。また、延伸時の糸揺れ、糸切れ等も無
く問題なく製糸できた。またドッフ後の再スタート成功
率も良好であった。また、染色斑もほとんど無く品位の
高いものであった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.80 (Experiment No. 20). The physical property values are shown in Table 10, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn also has good shrinkage stress and high elongation characteristics. Furthermore, the shrinkage rate of the shrinkable yarn was significantly higher than in the case of Examples 1 to 6, and a shrinkage difference mixed fiber yarn having a more bulging feeling was obtained. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0074】実施例11 高配向側として極限粘度0.66の IPA8.0mol%およびBHPP
3.5mol%共重合PET(酸化チタン含有せず、以下(IPA
+BHPP)共重合PETと略す)にポリプロピレンを15重量%
チップブレンドしたポリマとした以外は実施例9と同様
の条件で紡糸し、72dtex、36フィラメントの未延伸混繊
糸を巻き取った。高配向側では複屈折度0.043、伸度83
%、低配向側では複屈折度0.035、伸度180%であった。
Example 11 8.0 mol% of IPA having an intrinsic viscosity of 0.66 and BHPP as the high orientation side
3.5 mol% copolymerized PET (without titanium oxide, the following (IPA
+ BHPP) copolymerized PET) and 15% by weight of polypropylene
Spinning was carried out under the same conditions as in Example 9 except that the polymer was chip-blended, and a 72 dtex, 36 filament undrawn mixed fiber was wound. 0.043, elongation 83 on high orientation side
%, And on the low orientation side, the birefringence was 0.035 and the elongation was 180%.

【0075】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.25倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.21)。物性値は
表10に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。さらに、収縮糸の収縮率が実施例1〜6の場合
よりも大幅に高くなり、よりふくらみ感のある収縮差混
繊糸が得られた。また、延伸時の糸揺れ、糸切れ等も無
く問題なく製糸できた。またドッフ後の再スタート成功
率も良好であった。また、染色斑もほとんど無く品位の
高いものであった。
The undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.25 times (Experiment No. 21). The physical property values are shown in Table 10, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn also has good shrinkage stress and high elongation characteristics. Furthermore, the shrinkage rate of the shrinkable yarn was significantly higher than in the case of Examples 1 to 6, and a shrinkage difference mixed fiber yarn having a more bulging feeling was obtained. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0076】実施例12 高配向側を実施例11で用いた(IPA+BHPP)共重合PETに
ポリプロピレンを20重量%チップブレンドしたポリマと
した以外は実施例1と同様の条件で紡糸した。高配向側
では複屈折度0.040、伸度 35%、低配向側では複屈折度
0.035、伸度181%であった。
Example 12 Spinning was carried out under the same conditions as in Example 1 except that the (IPA + BHPP) copolymerized PET used in Example 11 was blended with 20% by weight of a polypropylene chip in the high orientation side. Birefringence 0.040, elongation 35% on high orientation side, birefringence on low orientation side
0.035 and elongation 181%.

【0077】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.02倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.22)。物性値は
表10に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。さらに、収縮糸の収縮率が実施例1〜6の場合
よりも大幅に高くなり、よりふくらみ感のある収縮差混
繊糸が得られた。また、延伸時の糸揺れ、糸切れ等も無
く問題なく製糸できた。またドッフ後の再スタート成功
率も良好であった。また、染色斑もほとんど無く品位の
高いものであった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was set to 120 ° C. and the draw ratio was set to 1.02 (Experiment No. 22). The physical property values are shown in Table 10, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn also has good shrinkage stress and high elongation characteristics. Furthermore, the shrinkage rate of the shrinkable yarn was significantly higher than in the case of Examples 1 to 6, and a shrinkage difference mixed fiber yarn having a more bulging feeling was obtained. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0078】実施例13 高配向側を実施例11で用いた(IPA+BHPP)共重合PETと
した以外は実施例12と同様の条件で紡糸をした。高配
向側では複屈折度0.040、伸度88%、低配向側では複屈折
度0.037、伸度176%あった。
Example 13 Spinning was carried out under the same conditions as in Example 12, except that the (IPA + BHPP) copolymerized PET used in Example 11 was used for the high orientation side. On the high orientation side, the birefringence was 0.040 and the elongation was 88%, and on the low orientation side, the birefringence was 0.037 and the elongation was 176%.

【0079】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.20倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.23)。物性値は
表10に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。さらに、収縮糸の収縮率が実施例1〜6の場合
よりも大幅に高くなり、よりふくらみ感のある収縮差混
繊糸が得られた。また、延伸時の糸揺れ、糸切れ等も無
く問題なく製糸できた。またドッフ後の再スタート成功
率も良好であった。また、染色斑もほとんど無く品位の
高いものであった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.20 (Experiment No. 23). The physical property values are shown in Table 10, and it can be seen that the low orientation side yarn shows spontaneous elongation, and the high orientation side yarn also has good shrinkage stress and high elongation characteristics. Furthermore, the shrinkage rate of the shrinkable yarn was significantly higher than in the case of Examples 1 to 6, and a shrinkage difference mixed fiber yarn having a more bulging feeling was obtained. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0080】[0080]

【表9】 [Table 9]

【表10】 実施例14 口金吐出孔形を変更することにより低配向側糸条の繊維
断面形状を表11に示すように3〜6葉断面、中空断面
とし、延伸倍率を1.80倍とした以外は実施例5と同様の
条件で溶融紡糸、延伸を行った(実験No.24〜2
7)。物性値は表12に示すが、低配向側糸条が自発伸
長性を示し、高配向側糸条の収縮応力、強伸度特性も良
好であることがわかる。得られた収縮差混繊糸は染色斑
もほとんど無く品位の高いものであった。
[Table 10] Example 14 Example 5 was repeated except that the shape of the fiber cross section of the low orientation side yarn was changed to 3 to 6 leaves cross section and hollow cross section as shown in Table 11 by changing the shape of the die discharge hole, and the stretching ratio was set to 1.80 times. Melt spinning and stretching were performed under the same conditions as in (Experiment Nos. 24 to 2).
7). The physical properties are shown in Table 12, and it can be seen that the low-oriented yarn has spontaneous elongation and the high-oriented yarn has good shrinkage stress and good elongation characteristics. The resulting shrinkage-differentiated mixed yarn had high quality with almost no staining spots.

【0081】[0081]

【表11】 [Table 11]

【表12】 実施例15 高配向側を IPA8.0mol共重合PET、紡糸速度、吐出量
を変更した以外は実施例1と同様の条件で紡糸を行い、
一旦巻き取ることなく紡糸直接延伸法によりそのまま延
伸を行い66dtex、36フィラメントの収縮差混繊糸を巻き
取った。この時、紡糸直接延伸法の装置としては図5に
示すように2個のネルソン型ホットローラーを用い、各
ホットローラーには糸を6回巻き付けた。第1ホットロ
ーラー14の温度は 90℃、第2ホットローラー15の
温度は120℃とした。ホットローラー周速、延伸倍率
(第2ホットローラー15の周速/第1ホットローラー
14の周速)は表13の様に変更した(実験No.2
8、29)。なお、ここでいう未延伸糸とは第1ホット
ローラー14直前の繊維をいうものである。未延伸糸複
屈折度は第1ホットローラー14と第2ホットローラー
15を同一周速度、室温とし、実施例1と同様にして求
めたものである。
[Table 12] Example 15 Spinning was performed under the same conditions as in Example 1 except that the high-orientation side was changed to IPA 8.0 mol copolymerized PET, the spinning speed, and the discharge rate.
The film was drawn directly by the spinning direct drawing method without being wound once, and a 66dtex, 36-filament differential shrinkage mixed yarn was wound up. At this time, as shown in FIG. 5, two Nelson-type hot rollers were used as a device for the direct spinning method, and the yarn was wound around each hot roller six times. The temperature of the first hot roller 14 was 90 ° C., and the temperature of the second hot roller 15 was 120 ° C. The peripheral speed of the hot roller and the stretching ratio (the peripheral speed of the second hot roller 15 / the peripheral speed of the first hot roller 14) were changed as shown in Table 13 (Experiment No. 2).
8, 29). Here, the undrawn yarn refers to a fiber immediately before the first hot roller 14. The undrawn yarn birefringence was determined in the same manner as in Example 1 except that the first hot roller 14 and the second hot roller 15 were set to the same peripheral speed and room temperature.

【0082】物性値は表14に示すが、低配向側糸条が
自発伸長性を示し、高配向側糸条の収縮応力、強伸度特
性も良好であることがわかる。得られた収縮差混繊糸は
染色斑もほとんど無く品位の高いものであった。
The physical properties are shown in Table 14. From the results, it can be seen that the low orientation side yarn exhibits spontaneous elongation, and the high orientation side yarn has good shrinkage stress and high elongation characteristics. The resulting shrinkage-differentiated mixed yarn had high quality with almost no staining spots.

【0083】[0083]

【表13】 [Table 13]

【表14】 実施例16 高配向側を極限粘度0.90のホモPBT、低配向側ポリマ
のSSIA共重合PETのブレンド量を7重量%とした以外は
実施例5と同様の条件で紡糸を行い、72dtex、36フィラ
メントの未延伸混繊糸を巻き取った。高配向側では伸度
105%、低配向側では伸度250%であった。
[Table 14] Example 16 Spinning was performed under the same conditions as in Example 5 except that the blending amount of homo-PBT having an intrinsic viscosity of 0.90 on the high orientation side and SSIA copolymerized PET of the low orientation side polymer was 7% by weight, and 72 dtex, 36 filaments. Was unwound. Elongation on high orientation side
The elongation was 105% on the low orientation side and 250% on the low orientation side.

【0084】この未延伸混繊糸を第2ホットローラー温
度 120℃、延伸倍率を1.38倍とした以外は実施例1と同
様の条件で延伸を行った(実験No.30)。物性値は
表16に示すが、低配向側糸条が自発伸長性を示し、高
配向側糸条の収縮応力、強伸度特性も良好であることが
わかる。また、延伸時の糸揺れ、糸切れ等も無く問題な
く製糸できた。またドッフ後の再スタート成功率も良好
であった。また、染色斑もほとんど無く品位の高いもの
であった。
This undrawn mixed fiber was drawn under the same conditions as in Example 1 except that the second hot roller temperature was 120 ° C. and the draw ratio was 1.38 (Experiment No. 30). The physical properties are shown in Table 16. It can be seen that the low-oriented yarn exhibits spontaneous elongation, and the high-oriented yarn has good shrinkage stress and good elongation characteristics. In addition, there was no yarn sway or yarn breakage during stretching, and the yarn could be produced without any problem. The success rate of restart after Doff was also good. In addition, it was of high quality with almost no staining spots.

【0085】[0085]

【表15】 [Table 15]

【表16】 実施例16 実験No.2、19、24、28、30で得られた収縮
差混繊糸に300ターン/mのS撚りを施し、ゾッキで平織
りを製織した。これに、常法により10%のアルカリ減量
を施した後染色、乾熱セットを行った。得られた布帛
は、自発伸長糸が布帛表面に浮き出ソフトでふくらみ感
があり、さらに反発感にも優れたものであった。また、
実験No.24の自発伸長糸を三葉断面、SSIAブレンド
PETとした混繊糸では、三葉断面によるドライ感の
他、SSIAブレンドPETがホモPETに比べアルカリ易
溶解性ポリマであるためアルカリ減量により繊維表面に
微細溝、微細窪みが多数形成され、ドライ感がさらに強
調されしかも絹様のきしみ感、しゃり感にも優れた布帛
が得られた。また、実験No.30のPBTを収縮糸と
して用いた混繊糸ではPBT特有のストレッチ性によ
り、PETとはまた異なったソフトで反発感に富む風合
いの布帛が得られた。
[Table 16] Example 16 Experiment no. S-twisting of 300 turns / m was applied to the shrinkage difference mixed fiber obtained in 2, 19, 24, 28, 30 and plain weaving was carried out with Zokki. This was subjected to 10% alkali weight reduction by a conventional method, followed by dyeing and dry heat setting. The obtained fabric was soft and had a swelling feeling with spontaneously elongated yarns floating on the surface of the fabric, and was also excellent in resilience. Also,
Experiment No. In the case of the mixed fiber in which 24 spontaneously elongated yarns were made of trilobal cross section and SSIA blended PET, the fiber surface was reduced due to alkali weight loss because SSIA blended PET is a more alkali-soluble polymer than homo PET, in addition to the dry feeling due to the trilobal cross section. A large number of fine grooves and fine depressions were formed in the fabric, and a dry feeling was further emphasized, and a silky squeaky feeling and a fabric excellent in feeling of shaking were obtained. Experiment No. With the mixed fiber using 30 PBT as the shrinking yarn, a fabric having a soft and resilient texture different from PET was obtained due to the stretch property peculiar to PBT.

【0086】[0086]

【発明の効果】本発明のポリエステル混繊糸の製造方法
を採用することにより、自発伸長糸を含む収縮差混繊糸
を簡単に操業性良く得ることができ、風合いの優れた織
編物を低コストで提供できるものである。
According to the method for producing a polyester mixed fiber yarn of the present invention, a shrinkage difference mixed fiber yarn including spontaneously elongated yarn can be easily obtained with good operability, and a woven or knitted fabric having an excellent texture can be obtained. It can be provided at a cost.

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

【図1】ホモPETの複屈折度と伸度の関係を表す図で
ある。
FIG. 1 is a diagram showing the relationship between the degree of birefringence and elongation of homo PET.

【図2】SSIA8.0mol%共重合PETの複屈折度と伸度の
関係を表す図である。
FIG. 2 is a graph showing the relationship between the birefringence and elongation of 8.0 mol% SSIA copolymerized PET.

【図3】SSIA8.0mol%、BHPP3.5mol%共重合PETの複屈
折度と伸度の関係を表す図である。
FIG. 3 is a graph showing the relationship between the birefringence and elongation of copolymerized 8.0 mol% SSIA and 3.5 mol% BHPP.

【図4】延伸装置を表す図であるFIG. 4 is a diagram showing a stretching device.

【図5】紡糸直接延伸装置を表す図であるFIG. 5 is a view showing a direct spinning apparatus for spinning.

【符号の説明】[Explanation of symbols]

1:未延伸糸 9:口金 2:フィードローラー 10:チムニー 3:第1ホットローラー 11:糸条 4:第2ホットローラー 12:給油ガイド 5:コールドローラー 13:エア交絡ガイ
ド 6:延伸糸 14:第1ホットロ
ーラー 7:スピンブロック 15:第2ホットロ
ーラー 8:不織布フィルター 16:巻き取り機
1: undrawn yarn 9: base 2: feed roller 10: chimney 3: first hot roller 11: yarn 4: second hot roller 12: lubrication guide 5: cold roller 13: air entanglement guide 6: drawn yarn 14: First hot roller 7: Spin block 15: Second hot roller 8: Non-woven fabric filter 16: Winding machine

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI D03D 15/00 D03D 15/00 D // D01D 5/12 D01D 5/12 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI D03D 15/00 D03D 15/00 D // D01D 5/12 D01D 5/12

Claims (11)

【特許請求の範囲】[Claims] 【請求項1】配向度差を有する2種類以上の糸条を同時
に紡糸し未延伸配向度差混繊糸とした後、実質的に延伸
を行うポリエステル収縮差混繊糸の製造方法において、
未延伸配向度差混繊糸において、高配向側の糸条を延伸
により収縮糸、低配向側の糸条を延伸により自発伸長糸
とすることを特徴とするポリエステル混繊糸の製造方
法。
Claims: 1. A method for producing a polyester shrinkage-differential mixed yarn in which two or more yarns having a difference in the degree of orientation are simultaneously spun to obtain a non-stretched mixed yarn with a difference in the degree of orientation, and then substantially stretched.
A method for producing a polyester mixed fiber yarn, wherein a yarn on a high orientation side is made into a contraction yarn by stretching, and a yarn on a low orientation side is made into a spontaneously elongated yarn by stretching.
【請求項2】自発伸長糸の乾熱収縮率が-5〜0%、沸騰
水収縮率が1%以下、収縮糸の乾熱収縮率が 8%以上、
自発伸長糸と収縮糸の乾熱収縮率差が10%以上である請
求項1記載のポリエステル混繊糸の製造方法。 乾熱収縮率(%)=[(L0−L2)/L0)]×100 (1) 沸騰水収縮率(%)=[(L0−L1)/L0)]×100 (2) L0:延伸糸を枷取りし初荷重0.09cN/dtex下で測定した
枷の原長 L1:L0を測定した枷を実質的に荷重フリーの状態で沸
騰水中で15分間処理し、風乾後初荷重0.09cN/dtex下で
の枷長 L2:L1を測定した枷をさらに乾熱 160℃でやはり荷重
フリーの状態で15分間処理し、風乾後初荷重0.09cN/dte
x下での枷長
2. The spontaneously elongated yarn has a dry heat shrinkage of -5 to 0%, a boiling water shrinkage of 1% or less, a shrinkage of dry heat shrinkage of 8% or more,
The method for producing a polyester mixed fiber yarn according to claim 1, wherein a difference in dry heat shrinkage ratio between the spontaneously elongated yarn and the shrinkable yarn is 10% or more. Dry heat shrinkage (%) = [(L 0 -L 2) / L 0)] × 100 (1) boiling water shrinkage (%) = [(L 0 -L 1) / L 0)] × 100 ( 2) L 0 : The original length of the shackle measured under an initial load of 0.09 cN / dtex after shackling the drawn yarn. L 1 : The shackle measuring L 0 was treated in boiling water for 15 minutes in a substantially load-free state. The length of the shackles under the initial load of 0.09 cN / dtex after air drying L 2 : The shackles whose L 1 was measured were further treated at 160 ° C. for 15 minutes with the load still free, and the initial load after the air drying was 0.09 cN / dte
x shackle length under
【請求項3】未延伸配向度差混繊糸において最も低い配
向度を有する糸条の複屈折度が0.020〜0.065、延伸倍率
が1.01〜1.35倍である請求項1または2記載のポリエス
テル混繊糸の製造方法。
3. The polyester blended fiber according to claim 1 or 2, wherein the yarn having the lowest degree of orientation in the unstretched oriented difference blended yarn has a birefringence of 0.020 to 0.065 and a draw ratio of 1.01 to 1.35. Manufacturing method of yarn.
【請求項4】未延伸配向度差混繊糸において最も低い配
向度を有する糸条の複屈折度が 0.020未満、延伸倍率が
1.05〜2.30倍である請求項1または2記載のポリエステ
ル混繊糸の製造方法。
4. The birefringence of the yarn having the lowest degree of orientation in the unstretched mixed yarn having the lowest degree of orientation is less than 0.020, and the draw ratio is less than 0.020.
The method for producing a polyester mixed fiber yarn according to claim 1 or 2, wherein the ratio is 1.05 to 2.30 times.
【請求項5】同時に紡糸した配向度差を有する混繊糸を
一旦巻き取った後、延伸する請求項1〜4のうちいずれ
か1項記載のポリエステル混繊糸の製造方法。
5. The method for producing a polyester mixed fiber yarn according to claim 1, wherein the mixed fiber yarn having a difference in the degree of orientation, which has been simultaneously spun, is once wound and then drawn.
【請求項6】同時に紡糸した配向度差を有する混繊糸
を、一旦巻き取ることなくそのまま延伸を行った後、巻
き取る請求項1〜5のうちいずれか1項記載のポリエス
テル混繊糸の製造方法。
6. The polyester mixed fiber yarn according to any one of claims 1 to 5, wherein the co-spun mixed fiber yarn having a difference in the degree of orientation is stretched as it is without being wound, and then wound. Production method.
【請求項7】延伸温度が110℃以下かつ熱セット温度が1
10℃以上である請求項1〜6記載のうちいずれか1項記
載のポリエステル混繊糸の製造方法。
7. The stretching temperature is 110 ° C. or less and the heat setting temperature is 1
The method for producing a polyester mixed fiber according to any one of claims 1 to 6, which is at least 10 ° C.
【請求項8】高配向側糸条を構成するポリマが低配向側
糸条を構成するポリマよりも高収縮性ポリマである請求
項1〜7のうちいずれか1項記載のポリエステル混繊糸
の製造方法。
8. The polyester blended yarn according to any one of claims 1 to 7, wherein the polymer constituting the high orientation side yarn is a polymer having a higher shrinkage than the polymer constituting the low orientation side yarn. Production method.
【請求項9】高収縮性ポリマがイソフタル酸が3〜12mol
%共重合されているポリエステルである請求項8記載の
ポリエステル混繊糸の製造方法。
9. The high-shrinkable polymer is 3 to 12 mol of isophthalic acid.
The method for producing a polyester mixed fiber yarn according to claim 8, which is a polyester copolymerized by%.
【請求項10】未延伸配向度差混繊糸の最も高い配向度
を有する糸条と最も低い配向度を有する糸条の複屈折度
の差が0.015以上、および/または伸度の差を80%以上と
することを特徴とする請求項1〜9のうちいずれか1項
記載のポリエステル混繊糸の製造方法。
10. The difference between the birefringence of the yarn having the highest degree of orientation and the yarn having the lowest degree of orientation of 0.015 or more, and / or % Or more, the method for producing a polyester mixed fiber yarn according to any one of claims 1 to 9, wherein
【請求項11】請求項1〜10のいずれか1項記載の製
造方法で得られるポリエステル混繊糸を用いることを特
徴とするポリエステル織編物。
11. A polyester woven or knitted fabric using a polyester mixed fiber obtained by the method according to any one of claims 1 to 10.
JP10024956A 1998-02-05 1998-02-05 Production of polyester-based combined filament yarn and knitted fabric Pending JPH11222745A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10024956A JPH11222745A (en) 1998-02-05 1998-02-05 Production of polyester-based combined filament yarn and knitted fabric

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10024956A JPH11222745A (en) 1998-02-05 1998-02-05 Production of polyester-based combined filament yarn and knitted fabric
JP2000171603A JP3736298B2 (en) 1998-02-05 2000-06-08 Blended yarn

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2000171603A Division JP3736298B2 (en) 1998-02-05 2000-06-08 Blended yarn

Publications (1)

Publication Number Publication Date
JPH11222745A true JPH11222745A (en) 1999-08-17

Family

ID=12152449

Family Applications (2)

Application Number Title Priority Date Filing Date
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JP2000171603A Expired - Lifetime JP3736298B2 (en) 1998-02-05 2000-06-08 Blended yarn

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2000171603A Expired - Lifetime JP3736298B2 (en) 1998-02-05 2000-06-08 Blended yarn

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Country Link
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JP2001123336A (en) * 1999-10-25 2001-05-08 Toray Ind Inc Latent crimp-revealing polyester fiber and method for producing the fiber
KR100814249B1 (en) 2004-12-31 2008-03-17 주식회사 효성 Polyester complex yarn with deep-dyeability and self-extension property and its manufacturing method
JP2008223166A (en) * 2007-03-12 2008-09-25 Toray Ind Inc Polyester combined filament yarn fabric
CN101724952A (en) * 2009-11-20 2010-06-09 宁波竞宏服饰有限公司 Yarn tightening machine
JP2017008431A (en) * 2015-06-19 2017-01-12 Tmtマシナリー株式会社 Spinning take-off apparatus
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JP4985358B2 (en) * 2007-11-30 2012-07-25 東レ株式会社 Shrinkage difference mixed yarn

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001123336A (en) * 1999-10-25 2001-05-08 Toray Ind Inc Latent crimp-revealing polyester fiber and method for producing the fiber
KR100814249B1 (en) 2004-12-31 2008-03-17 주식회사 효성 Polyester complex yarn with deep-dyeability and self-extension property and its manufacturing method
JP2008223166A (en) * 2007-03-12 2008-09-25 Toray Ind Inc Polyester combined filament yarn fabric
CN101724952A (en) * 2009-11-20 2010-06-09 宁波竞宏服饰有限公司 Yarn tightening machine
JP2017008431A (en) * 2015-06-19 2017-01-12 Tmtマシナリー株式会社 Spinning take-off apparatus
CN109402750A (en) * 2018-10-10 2019-03-01 浙江锦诗纺织科技有限公司 A kind of preparation method of bright cyan pro-skin type scarf fabrics

Also Published As

Publication number Publication date
JP2001003234A (en) 2001-01-09
JP3736298B2 (en) 2006-01-18

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