JPH04194010A - Production of blended yarn having difference in elongations of filaments - Google Patents
Production of blended yarn having difference in elongations of filamentsInfo
- Publication number
- JPH04194010A JPH04194010A JP32307890A JP32307890A JPH04194010A JP H04194010 A JPH04194010 A JP H04194010A JP 32307890 A JP32307890 A JP 32307890A JP 32307890 A JP32307890 A JP 32307890A JP H04194010 A JPH04194010 A JP H04194010A
- Authority
- JP
- Japan
- Prior art keywords
- elongation
- spinneret
- difference
- yarn
- discharge hole
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000000835 fiber Substances 0.000 claims abstract description 35
- 229920000642 polymer Polymers 0.000 claims abstract description 22
- 239000004952 Polyamide Substances 0.000 claims abstract description 4
- 229920002647 polyamide Polymers 0.000 claims abstract description 4
- 229920000728 polyester Polymers 0.000 claims abstract description 4
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 238000009987 spinning Methods 0.000 abstract description 32
- 238000001125 extrusion Methods 0.000 abstract description 7
- 208000012886 Vertigo Diseases 0.000 description 31
- 238000010438 heat treatment Methods 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000986 disperse dye Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical compound OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、伸度差を有する混繊糸の製造方法に関し、さ
らに詳しくは伸度差の大きい紡糸混繊糸の製造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a mixed fiber yarn having a difference in elongation, and more particularly to a method for manufacturing a spun mixed fiber yarn having a large difference in elongation.
近年、いわゆる“新合繊”が市場をにぎわしているが、
最近の素材の開発方向として、天然繊維を模倣するので
はなく、合成繊維の特徴をより発揮していくという試み
が主体となっている。混繊糸の内容もそれに伴い大きく
変化し、例えば伸度が２５０〜３５０％の低紡速未延伸
糸と、伸度が１００〜１６０％の中紡速未延伸糸の組合
せで延伸混繊するということも企業化されている。In recent years, so-called “new synthetic fibers” have been buzzing in the market.
Recent developments in materials have focused on attempts to bring out the characteristics of synthetic fibers, rather than imitating natural fibers. The content of the blended yarn also changes greatly accordingly, for example, a drawn blend is made by combining a low spinning speed undrawn yarn with an elongation of 250 to 350% and a medium spinning speed undrawn yarn with an elongation of 100 to 160%. This has also become corporatized.
この技術は、延伸混繊による技術であるため、より合理
的な製造方法、すなわち紡糸段階でこのような大きい伸
度差を得る紡糸混繊の開発が要望されていた。Since this technology involves drawing and blending, there has been a demand for a more rational manufacturing method, that is, the development of a spun blend that can obtain such a large difference in elongation at the spinning stage.
このための技術として、例えば特願昭５９−１１４３９
９号公報には、特殊なピンを用いて大きな伸度差を取り
出すことが記載されている。As a technique for this purpose, for example, Japanese Patent Application No. 59-11439
Publication No. 9 describes that a special pin is used to extract a large difference in elongation.
この方法によると、有用な伸度差が得られる反面、ピン
の精度、装着時の安定性など生産管理面での課題があり
、より簡便な方法、例えばピンを使わないで単なる口金
だけで可能な技術が望まれていた。Although this method provides a useful elongation difference, there are issues with production control, such as pin accuracy and stability during installation.Therefore, simpler methods, such as a simple cap without using a pin, are possible. A new technology was desired.
ピンを使わない方法としては、紡糸口金、パックを突き
出して冷却する方法、あるいは口金面内で各孔間に突き
出しの差をつけ、口金面内の温度差による伸度アップの
試みもなされている。As methods that do not use pins, attempts have also been made to cool the spinneret or pack by protruding it, or by creating a difference in the protrusion between each hole within the spinneret surface, thereby increasing the elongation by creating a temperature difference within the spinneret surface. .
しかしながら、単なる冷却差だけでは、口金面が冷えて
紡糸性が低下するだけでなく、肝心の伸度差もそれほど
つかないのが実態であった。However, the reality is that with a mere cooling difference, not only the spinneret surface becomes cold and spinnability deteriorates, but also the important difference in elongation cannot be achieved much.
〔発明が解決しようとする課題］
本発明は、■単一ポリマーで、■伸度差が充分大きく、
■紡糸時の糸切れが少ない、紡糸混繊糸の製造方法を提
供することを目的とする。[Problems to be Solved by the Invention] The present invention consists of (1) a single polymer, (2) a sufficiently large difference in elongation;
- The purpose of the present invention is to provide a method for producing spun mixed fiber yarn that causes less yarn breakage during spinning.
本発明は、溶融ポリマーが吐出される吐出孔面の位置が
異なる複数の吐出孔面を有する紡糸口金を用いて混繊糸
を得る方法において、該複数の吐出孔面の中で下部に位
置する吐出孔面に、少なくとも断面積が連続的に拡大す
る吐出孔を設置した紡糸口金を用いることを特徴とする
、伸度差を有する混繊糸の製造方法である。The present invention provides a method for obtaining a mixed fiber yarn using a spinneret having a plurality of discharge hole surfaces in which the positions of the discharge hole surfaces from which molten polymer is discharged are different. This is a method for producing a mixed fiber yarn having a difference in elongation, which is characterized by using a spinneret in which a discharge hole whose cross-sectional area at least continuously expands is installed on the discharge hole surface.
以下、本発明の詳細な説明する。The present invention will be explained in detail below.
ポリマーの溶融温度あるいは紡糸口金温度を下げると、
吐出孔より吐出される重合体の溶融粘度が大きくなり、
伸長応力が大きくなり、その結果、同一紡速で巻き取っ
ても伸度が低下するのは公知のことである。By lowering the polymer melt temperature or spinneret temperature,
The melt viscosity of the polymer discharged from the discharge hole increases,
It is known that the elongation stress increases and as a result, the elongation decreases even if the spinning speed is the same.
しかしながら、さらに温度を下げていくと弱糸になり最
後には断糸となるため、通常の吐出孔を用いた場合は、
得られる繊維の伸度およびパフォーマンスの観点から限
界があった。そこで、温度を下げても弱糸になりにくい
方向について鋭意検討した結果、孔径の大きい吐出孔の
方が弱糸になりに（いことがわかった。しかし、この場
合、単に孔径のみを大きくすると、吐出孔内を流れるポ
リマーの背圧が不充分となり、その結果、吐出斑が生じ
るという問題があった。However, if the temperature is further lowered, the yarn will become weaker and eventually break, so if a normal discharge hole is used,
There were limitations in terms of the elongation and performance of the fibers obtained. Therefore, as a result of careful consideration of the direction in which the yarn is less likely to become weak even when the temperature is lowered, it was found that discharge holes with a larger hole diameter are less likely to cause the yarn to become weak.However, in this case, simply increasing the hole diameter However, there was a problem in that the back pressure of the polymer flowing in the discharge hole was insufficient, resulting in uneven discharge.
そこで、本発明者らは、さらに鋭意検討した結果、断面
積が連続的に拡大する吐出孔を用いるならば、口金温度
を下げても弱糸になりにくく、かつ吐出孔内のポリマー
流にかかる背圧も極めてスムーズかつ連続的に変化する
ため、ポリマー流が安定し吐出斑が生じないことを見出
した。Therefore, as a result of further intensive study, the present inventors found that if a discharge hole with a continuously expanding cross-sectional area is used, it will be difficult to cause weak threads even when the mouth temperature is lowered, and the polymer flow within the discharge hole will be affected. It has been found that because the back pressure changes extremely smoothly and continuously, the polymer flow is stable and no uneven discharge occurs.
さらに驚くべきことに、吐出孔の形状をかかる形状にす
ると、ポリマーが吐出孔を離れる地点の断面積も極めて
大きくすることができ、例えば従来の高ドラフト紡糸は
高々１，０００〜２．０００程度のドラフト率であるの
に対し、数千〜敵方、さらには１０万以上の高ドラフト
紡糸さえも可能になったのである。さらに、口金面温度
を下げることができるので、そのドラフト効果をより有
効に取り出すことができるのである。従って、口金面温
度の低い本吐出孔と口金面温度の高い他の吐出孔を有す
る紡糸口金を用いて混繊糸を紡糸することにより、ピン
などの複雑な装置を使用しないで、紡糸口金だけで、伸
度差の充分に大きい紡糸混繊糸の製造が可能となったの
である。Furthermore, surprisingly, when the shape of the discharge hole is made into such a shape, the cross-sectional area at the point where the polymer leaves the discharge hole can also be made extremely large. It has become possible to spin high drafts of several thousand to 100,000 or more. Furthermore, since the temperature of the mouthpiece surface can be lowered, the draft effect can be taken out more effectively. Therefore, by spinning a blended yarn using a spinneret that has a main discharge hole with a low spindle surface temperature and another discharge hole with a high spindle surface temperature, it is possible to spin the mixed fiber yarn using only the spinneret without using complicated devices such as pins. This made it possible to produce a spun mixed fiber yarn with a sufficiently large difference in elongation.
本発明を、以下図面を用いてさらに詳しく説明する。The present invention will be explained in more detail below using the drawings.
第１図は、本発明に使用できる紡糸口金の１態様を示す
ものである。Ｂ孔が「吐出孔の断面積が連続的に拡大す
る吐出孔ｊであり、その断面積はポリマーの導入部ｌの
終了点２における断面積ＳＡから連続的に拡大し、溶融
ポリマーが吐出孔を離れる点３において最大となる特徴
を有しており、この点が従来の紡糸口金（第６図）と大
きく異なる点である。すなわち、２の地点で絞ってまず
大きな背圧をかけ、次に連続的に拡大して安定な流れに
するわけである。なお、前記の断面積が連続的に拡大す
る吐出孔は、第１図Ｂ孔のごとく文字通り連続的に拡大
する吐出孔のほか、例えば層流を乱さない程度で段階的
に拡大する場合も含む。FIG. 1 shows one embodiment of a spinneret that can be used in the present invention. The B hole is a discharge hole j whose cross-sectional area continuously expands, and its cross-sectional area continuously expands from the cross-sectional area SA at the end point 2 of the polymer introduction part l, and the molten polymer flows through the discharge hole. It has the characteristic that it reaches its maximum at point 3, where it leaves the spinneret, and this point is very different from the conventional spinneret (Figure 6).In other words, it squeezes at point 2, first applying a large back pressure, and then In other words, the discharge hole whose cross-sectional area continuously expands continuously expands to create a stable flow. For example, it also includes a case where the flow is expanded in stages without disturbing the laminar flow.
次に、第１図において、Ｂ孔のポリマーが吐出される面
は、Ａ孔の吐出孔面より下部に位置することが必要であ
る。これは、Ｂ孔を離れるポリマー流の温度を丸孔を離
れるポリマー流の温度より低くして粘性を高め、前述の
紡糸ドラフトの効果をより有効にし大きな伸度差を得る
ためである。Next, in FIG. 1, the surface of the B hole from which the polymer is discharged needs to be located lower than the discharge hole surface of the A hole. This is to increase the viscosity by lowering the temperature of the polymer flow leaving the B hole than that of the polymer flow leaving the round hole, thereby making the effect of the spinning draft more effective and obtaining a large elongation difference.
具体的には、吐出孔面間の距離りは３ｗ以上、好ましく
は１０５ｗ以上にすると良好な結果を与える。ただ、Ｌ
があまり大きくなりすぎると、例えばＬが１００ｍ＋以
上になると、丸孔、Ｂ孔間の温度差が大きくなり過ぎ適
性な温度条件が設定できなくなるので、Ｌは７０肚程度
までが好ましい結果を与える。口金面の温度差は、吐出
孔面間の距離に依存する。口金面の温度差は３°Ｃ以上
、特に１０°Ｃ以上が好ましい結果を与える。ただし、
温度差が４０°Ｃを超えると、安定な紡糸ができなくな
るので、温度差としては３５°Ｃ以下にするのが好まし
い。Specifically, good results are obtained when the distance between the discharge hole surfaces is 3w or more, preferably 105w or more. However, L
If L becomes too large, for example, if L exceeds 100 m+, the temperature difference between the round hole and B hole will become too large, making it impossible to set an appropriate temperature condition. Therefore, a preferable result is obtained when L is up to about 70°. The temperature difference between the mouth surfaces depends on the distance between the discharge hole surfaces. A temperature difference between the mouth surfaces of 3°C or more, particularly 10°C or more gives preferable results. however,
If the temperature difference exceeds 40°C, stable spinning will not be possible, so the temperature difference is preferably 35°C or less.
なお、温度差をコントロールする方法としては、口金面
側面にヒーターを設置したり、特にＢ孔群のみその周囲
をバンドヒーターでコントロールする方法がある。In addition, as a method of controlling the temperature difference, there are methods such as installing a heater on the side surface of the mouthpiece or controlling the area around only the B hole group with a band heater.
また、第１図において、具体的な断面積は、地点３にお
ける断面積Ｓ、は０，１９６２閣２ （丸孔換算！、＝
１．０１ｌｌｌφ）以上が好ましく、０．７８５０閣２
（丸孔換算ｉ、＊ ＝２．Ｏ■φ）以上がより好まし
い結果を与える。紡糸ドラフトの面で断面積Ｓｌｌは大
きい方が望ましいが、あまり大きくすると１つの口金の
なかの吐出孔の数が不足するので１９．６２５ｍ”
（丸孔換算ｐ、＝１０ｍφ）程度に押さえるのが同一口
金で混繊糸を得るという観点から好ましい。複数の口金
を使用する場合は、何ら制限はない。In addition, in Figure 1, the specific cross-sectional area is the cross-sectional area S at point 3, which is 0,1962 kaku2 (round hole conversion!,=
1.01lllφ) or more is preferable, and 0.7850kaku2
(Round hole conversion i, *=2.O■φ) or more gives a more preferable result. In terms of the spinning draft, it is desirable that the cross-sectional area Sll be larger, but if it is too large, the number of discharge holes in one nozzle will be insufficient, so it is 19.625 m.
(round hole conversion p, = 10 mφ) is preferable from the viewpoint of obtaining a mixed fiber yarn with the same die. There are no restrictions when using multiple bases.
ｉＡ、１．ｃおよびθについては、Ｓａ ＜Ｓ、の関係
を満足するだけでよく何ら限定されるものではなく、例
えば！、は０．１０〜０．９０ｍφ、！、は０．２０〜
１５ａｏｎφ程度で充分である。iA, 1. c and θ are not limited in any way as long as they satisfy the relationship Sa<S, for example! , is 0.10~0.90mφ,! , is 0.20~
About 15 aonφ is sufficient.
また、θは、５°〈θく４５＠、特に１０°〈θ〈３０
°にすれば充分である。Also, θ is 5°〈θ〈45@, especially 10°〈θ〈30
° is sufficient.
なお、丸孔であるが、これは特に限定されるものではな
く、従来の吐出孔、例えば丸孔、異形孔など色々と使用
することができる。Note that although the holes are round, this is not particularly limited, and various conventional discharge holes such as round holes and irregularly shaped holes can be used.
第２図〜第３図は、本発明の混繊糸の製造に用いること
ができる他の態様を示したものであるが、本発明は必ず
しもこれに限定されない。Although FIGS. 2 and 3 show other embodiments that can be used for manufacturing the mixed fiber yarn of the present invention, the present invention is not necessarily limited thereto.
第４図は、本発明の紡糸口金を使用して得られる混繊糸
の未延伸糸の応力（Ｓｔ）−伸度（Ｅり曲線（ＳＳ曲線
）であり、特に細デニール成分が低伸度で太デニール成
分が高伸度の組合せであり、例えば紡速が１．０００〜
２，０００ｍ／分程度の比較的低紡速で引き取られた混
繊糸のＳＳ曲線であり、低伸度（Ｅｆｔ ）と高伸度（
Ｆｌ、）との間に明確な区分が生じ、その伸度差（Ｆｌ
２−Ｅｆ、）は１００％以上と極めて大きい特徴を有す
る。Figure 4 shows the stress (St)-elongation (E curve (SS curve)) of the undrawn yarn of the mixed fiber yarn obtained using the spinneret of the present invention, in particular, the fine denier component has a low elongation. It is a combination of thick denier component and high elongation, for example, when the spinning speed is 1.000~
This is the SS curve of a mixed yarn drawn at a relatively low spinning speed of about 2,000 m/min, and shows the differences between low elongation (Eft) and high elongation (Eft).
), and the difference in elongation (Fl
2-Ef,) has an extremely large characteristic of 100% or more.
第５図は、本発明の紡糸口金を使用して得られた混繊糸
の未延伸糸の応力伸度曲線（ＳＳ曲線）であり、この場
合は大デニール成分が低伸度となり細デニール成分が高
伸度となり、従来の紡糸混繊とは異なった挙動を示すこ
とも可能であることがわかる。FIG. 5 is a stress elongation curve (SS curve) of an undrawn mixed yarn obtained using the spinneret of the present invention, in which the large denier component has a low elongation and the fine denier component has a low elongation. It can be seen that it is possible to have high elongation and exhibit behavior different from conventional spun mixed fibers.
第６図は、従来検討されている紡糸口金の模式％式％
第７図は、従来の紡糸混繊未延伸糸の応力−伸度曲線（
ＳＳ曲線）を示す。この場合は、細デニール成分が低伸
度となるが、太デニール成分との伸度差は小さく、低紡
速で巻き取っても、高々８５％程度である。Figure 6 shows a schematic percentage formula of a conventionally studied spinneret. Figure 7 shows a stress-elongation curve (
SS curve) is shown. In this case, the fine denier component has a low elongation, but the difference in elongation from the thick denier component is small, and even when wound at a low spinning speed, the elongation is at most about 85%.
本発明の方法で得られる混繊糸は、必要に応じて延伸熱
処理を施して各種織編物用原糸として使用する。延伸熱
処理条件は特に限定されるものではなく、既存の設備、
既存の条件を使用することができる。また、その方法も
一度巻き取ったのち、別に延伸熱処理するいわゆる別延
の方法はもちろん、紡糸延伸熱処理を連続して行う、い
わゆる直延の方式のいずれでも可能である。The mixed fiber yarn obtained by the method of the present invention is subjected to drawing heat treatment if necessary, and used as raw yarn for various woven and knitted fabrics. The stretching heat treatment conditions are not particularly limited, and existing equipment,
Existing conditions can be used. Further, this method can be either a so-called separate stretching method in which the material is wound once and then subjected to a heat treatment for stretching separately, or a so-called direct stretching method in which a spinning and stretching heat treatment is performed continuously.
また、通常知られているように、高紡速、例えば４，０
００ｍ／分以上の場合は、力学的性質が向上しているの
で延伸熱処理する必要はない。Also, as is commonly known, high spinning speeds, e.g. 4,0
In the case of 00 m/min or more, the mechanical properties are improved, so there is no need to carry out the stretching heat treatment.
さらに、本発明の混繊糸は、単に延伸糸として使用する
だけでなく、仮撚加工を施し、加工糸としても使用する
ことができる。Furthermore, the mixed fiber yarn of the present invention can be used not only as a drawn yarn but also as a textured yarn by being subjected to a false twisting process.
さらに、製品の単糸デニール、総デニールも特に限定さ
れない。Furthermore, the single yarn denier and total denier of the product are not particularly limited.
なお、本発明に使用する溶融ポリマーとしては、熱可塑
性ポリエステルおよび／またはポリアミドを挙げること
ができる。熱可塑性ポリエステルとしては、例えばポリ
エチレンテレフタレート、ポリプロとレンチレフタレー
ト、ポリブチレンテレフタレート、ポリへキサメチレン
テレフタレートなどを、ポリアミドとしては、ナイロン
６１、ナイロン６６、ナイロン４６などを挙げることが
できる。Note that the molten polymer used in the present invention includes thermoplastic polyester and/or polyamide. Examples of the thermoplastic polyester include polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and polyhexamethylene terephthalate, and examples of the polyamide include nylon 61, nylon 66, and nylon 46.
また、本発明では、以上のようにして伸度差の大きい紡
糸混繊糸が製造できる。ここで、伸度差は、混繊糸を構
成するデニールの組合せ、あるいは巻取り速度により大
きく異なるが、本発明の目的とする伸度差とは、例えば
細デニール成分が低伸度となる場合、紡速１，０００〜
１，５００ｍ／分の低紡速では少なくとも１００％を超
える伸度差、紡速３．０００ｍ／分の中紡速でも少なく
とも３０％を超える大きな伸度差をいうのであり、さら
には太デニール成分の伸度が細デニール成分の伸度より
小さくなる、従来の紡糸混繊の概念を変えるような場合
をも含むものである。Further, in the present invention, a spun mixed fiber yarn having a large difference in elongation can be produced in the above manner. Here, the elongation difference differs greatly depending on the combination of deniers constituting the mixed fiber yarn or the winding speed, but the elongation difference aimed at in the present invention means, for example, when a fine denier component has a low elongation. , spinning speed 1,000~
At a low spinning speed of 1,500 m/min, there is a difference in elongation of at least 100%, and even at a medium spinning speed of 3,000 m/min, there is a large elongation difference of at least 30%. This also includes cases where the elongation of the fine denier component is smaller than that of the fine denier component, which changes the concept of conventional spinning and mixed fibers.
以下、実施例にて本発明をさらに詳細に説明する。なお
、本実施例において物性は下記の方法で測定したもので
ある。Hereinafter, the present invention will be explained in more detail with reference to Examples. In addition, in this example, the physical properties were measured by the following method.
■極限粘度
３５℃、オルソクロルフェノール中オストワルド型粘度
計を用いて測定した溶融粘度から算出した。(2) Intrinsic viscosity Calculated from the melt viscosity measured using an Ostwald viscometer in orthochlorophenol at 35°C.
■紡糸ドラフト
巻取り速度（Ｖ）とポリマーの吐出速度（Ｔ）の比（Ｖ
／Ｔ）で求めた。■ Ratio of spinning draft winding speed (V) to polymer discharge speed (T) (V
/T).
■口金面温度 吐出孔面に検出端を入れ、その表面温度を測定した。■Case surface temperature A detection end was inserted into the discharge hole surface, and the surface temperature was measured.
■混繊糸の強力（Ｓ ｔ ） 、伸度（Ｅりオートグラ
フ（定速伸長型引張試験機）を用い、つかみ間隔の距離
を２０ｃｍとし、標準初荷重のもとで試料をとりつけ、
引張速度１００％／分で引っ張り、荷重伸長曲線を描き
、背伸曲線の最大応力点をその試料の切断強力および伸
度とした。■ Tensile strength (S t ) and elongation (E) of the blended yarn Using an autograph (constant speed extension type tensile tester), the grip distance was set to 20 cm, and the sample was attached under the standard initial load.
The sample was pulled at a tensile rate of 100%/min, a load-elongation curve was drawn, and the maximum stress point on the back-elongation curve was taken as the cutting strength and elongation of the sample.
なお、測定回数は５回とし平均値を求め、また強力（ｇ
）は繊度当たりの強さを求めて強度（ｇ／ｄ）とした。In addition, the number of measurements was 5 times and the average value was obtained.
) was defined as strength (g/d) by determining the strength per fineness.
■嵩高性
糸条をかせ（周長１．２５ｍ）に３２０回転とり、２つ
折りにしたサンプルの１端に６ｇの荷重を吊るし、乾熱
１８０℃で５分間処理し、冷却後一定の重量（Ｗｇ）の
堆積（Ｖｃｊ）を６．４ｇの荷重下で測定し、以下の式
で算出した。■ A skein of bulky yarn (circumference: 1.25 m) was rotated 320 times, a load of 6 g was hung from one end of the sample folded in half, and the sample was dry heated at 180°C for 5 minutes. After cooling, a constant weight ( The deposition (Vcj) of Wg) was measured under a load of 6.4 g, and calculated using the following formula.
■染色性および風合い
得られた混繊糸を筒編みし、分散染料で常圧染色し、水
洗乾燥後、１８０℃で１分間セットし、評価用試料とし
た。(2) Dyeability and Texture The obtained mixed fiber yarn was knitted in a tube, dyed under normal pressure with a disperse dye, washed with water, dried, and then set at 180° C. for 1 minute to prepare a sample for evaluation.
評価は肉眼、触感によって実施した。Evaluation was performed visually and tactilely.
実施例１
極限粘度〔η〕が０．６４のポリエチレンテレフタレー
ト（艷消し剤として０．０７重量％のＴ ｉ Ｏｔを含
む）を溶融し、第２図に示す吐出形状の組合せを有する
紡糸口金（Ａ、Ｂの各ホール数はそれぞれ１２Ｈである
）を用い、１４．７ｇ／分の吐出量で押し出した。ここ
で、使用した吐出孔の各部の寸法および口金寸法を第１
表に示す。Example 1 Polyethylene terephthalate having an intrinsic viscosity [η] of 0.64 (containing 0.07% by weight of T i Ot as a quenching agent) was melted and a spinneret having the combination of discharge shapes shown in FIG. The number of holes in each of A and B was 12H), and extrusion was performed at a discharge rate of 14.7 g/min. Here, the dimensions of each part of the discharge hole used and the dimensions of the nozzle are determined as follows.
Shown in the table.
第１表
押し出されたポリマー流に、温度２６°Ｃ１湿度６０％
の冷却風を３０Ｃ１１／秒の線速度で吹きつけ冷却固化
させたのち、オイリングローラ−で油剤を付与し、引取
り速度１，０００ｍ／分で巻き取り、１３３デニール／
２４フイラメントのマルチフィラメントを得た。なお、
このときの混繊糸を構成する細デニール成分と太デニー
ル成分の比は約ｌ：３であり、また細デニール成分が低
伸度であった。Table 1 The extruded polymer stream has a temperature of 26°C and a humidity of 60%.
After cooling and solidifying by blowing cooling air at a linear velocity of 30 C11/sec, oil was applied with an oiling roller and wound at a take-up speed of 1,000 m/min to form a 133 denier/
A multifilament of 24 filaments was obtained. In addition,
The ratio of the fine denier component and the thick denier component constituting the mixed fiber yarn at this time was about 1:3, and the fine denier component had a low elongation.
得られた未延伸糸の応力伸度曲線より伸度差（ＥＩ！、
ｔ Ｅｊ！＋）をを求めた結果を、第２表に示す。From the stress-elongation curve of the obtained undrawn yarn, the elongation difference (EI!,
tEj! +) are shown in Table 2.
第２表から明らかなとおり、伸度差が極めて大きく、第
４図に示すようにあたかも低紡速で巻き取った未延伸糸
と中紡速で巻き取った未延伸系とを混繊したようなＳＳ
曲線の形態を呈していた。As is clear from Table 2, the difference in elongation is extremely large, and as shown in Figure 4, it is as if the undrawn yarn wound at a low spinning speed and the undrawn yarn wound at a medium spinning speed were mixed together. SS
It had a curved shape.
引き続き、この未延伸系を以下の条件で延伸熱処理し、
５１デニール／２４フイラメントの延伸糸を得た。Subsequently, this unstretched system was subjected to stretching heat treatment under the following conditions,
A drawn yarn of 51 denier/24 filaments was obtained.
（延伸条件）
得られた延伸糸は、嵩高性が５１ｃ１ｆｆ／ｇと極めて
嵩高性の大きいものであった。(Stretching Conditions) The obtained drawn yarn had extremely high bulkiness of 51c1ff/g.
次に、前記マルチフィラメントを筒編みし、下記条件で
分散染料で染色した。Next, the multifilament was knitted into a tube and dyed with a disperse dye under the following conditions.
（染色条件）
染色した試料を水洗乾燥後、１８０℃で１分間熱セツト
した。(Staining conditions) After washing and drying the dyed sample, it was heat set at 180° C. for 1 minute.
このようにして得られた試料は、均一で染色性良好なも
のであり、風合いは嵩高性のあるタッチを有していた。The sample thus obtained was uniform and had good dyeability, and had a bulky texture.
実施例２〜６
極限粘度〔η〕が０．７２のポリエチレンテレフタレー
ト（艶消し剤として０．０７重量％のＴｉ１ｔを含む）
を溶融し、実施例１で用いた口金より実施例１と同じ要
領で、９２デニール／２４フイラメントの混繊糸を得た
。なお、このときの吐出量および紡糸速度を変更して実
施した。Examples 2 to 6 Polyethylene terephthalate with an intrinsic viscosity [η] of 0.72 (contains 0.07% by weight of Ti1t as a matting agent)
was melted, and a mixed fiber yarn of 92 denier/24 filaments was obtained using the die used in Example 1 in the same manner as in Example 1. Note that this experiment was carried out by changing the discharge amount and spinning speed.
紡糸条件および得られた混繊糸の伸度を第３表に示す。Table 3 shows the spinning conditions and the elongation of the obtained mixed fiber yarn.
なお、混繊糸は、細デニール成分が低伸度でそのデニー
ル比は１：３であった。Note that the fine denier component of the mixed fiber yarn had low elongation and the denier ratio was 1:3.
第３表にみるとおり、伸度差そのものは低紡速はど大き
いが、３０００ｍ／分の中紡速でも６０％の伸度差を有
していた。As shown in Table 3, the elongation difference itself was large at low spinning speeds, but even at medium spinning speeds of 3000 m/min, there was a 60% difference in elongation.
（以下余白）
比較例１
紡糸口金が第６図の組合せである以外は、実施例１と同
じ要領で実施し、１３３デニール／２４フイラメントの
混繊糸を得た。Ｂ孔群は温度が下がったので流量が減り
混繊糸となった。(The following is a blank space) Comparative Example 1 A mixed fiber yarn of 133 denier/24 filaments was obtained by carrying out the same procedure as in Example 1 except that the spinneret was the combination shown in FIG. 6. As the temperature in hole group B decreased, the flow rate decreased and the yarn became a mixed fiber yarn.
この時の混繊糸を構成する成分のデニール比は１：３で
あり、細デニールが低伸度であった。The denier ratio of the components constituting the mixed fiber yarn at this time was 1:3, and the fine denier had a low elongation.
使用した口金の各部の寸法および未延伸糸の伸度をそれ
ぞれ第４表および第５表に示す。The dimensions of each part of the die used and the elongation of the undrawn yarn are shown in Tables 4 and 5, respectively.
第４表
第５表
第５表から明らかなように、低紡速でも、８５％程度し
か伸度差−がつかなかった。As is clear from Table 4 and Table 5, even at low spinning speeds, the difference in elongation was only about 85%.
この未延伸糸を実施例１と同じ要領で３．２倍延伸し、
４２デニール／２４フイラメントの延伸糸を得た。その
嵩高性は１Ｂｃｄ／ｇと低いものであった。This undrawn yarn was drawn 3.2 times in the same manner as in Example 1,
A drawn yarn of 42 denier/24 filaments was obtained. Its bulkiness was as low as 1 Bcd/g.
比較例２
比較例１で用いたのと同じタイプの吐出孔の組合せで、
Ａ孔が比較例１と同じで、Ｂ孔が！□＝ｆｓ＋＝ ５
．Ｏｍφ、１ｃＩ＝１．２ＥＩＳＬ＝６０鵬の紡糸口金
を用いて、実施例１と同じ要領で紡糸した。Ｂ孔の吐出
斑が太き（巻取れなかった。Comparative Example 2 With the same type of discharge hole combination used in Comparative Example 1,
The A hole is the same as Comparative Example 1, and the B hole is! □=fs+=5
．． Spinning was carried out in the same manner as in Example 1 using a spinneret of Omφ, 1cI=1.2EISL=60. The discharge spot in hole B was thick (could not be wound up).
実施例７
実施例１で用いたと同じタイプの吐出孔の組合せで第６
表に示す寸法の紡糸口金を用いて、実施例１と同じ要領
で紡糸し、１３３デニール／２４フィラメントの混繊糸
を得た。このときの混繊糸を構成する成分のデニール比
は１：２であり、太デニール成分が低伸度であった。混
繊糸の伸度も併せて第６表に記す。Example 7 With the same type of discharge hole combination used in Example 1, the sixth
Using a spinneret with the dimensions shown in the table, spinning was carried out in the same manner as in Example 1 to obtain a mixed fiber yarn of 133 denier/24 filaments. The denier ratio of the components constituting the mixed fiber yarn at this time was 1:2, and the thick denier component had low elongation. The elongation of the mixed yarn is also listed in Table 6.
第６表
本実施例においては、太デニール成分が低伸度である、
従来の紡糸混繊糸とは異なる混繊糸が得られた。Table 6 In this example, the thick denier component has low elongation.
A blended yarn different from conventional spun blended yarns was obtained.
本発明の方法によると、口金温度、紡糸温度を下げても
弱糸になりにくく、かつ従来公知の紡糸ドラフトより１
桁以上、場合によっては２桁も大きい紡糸ドラフトを作
用させることができるので、極めて大きな伸度差を有す
る混繊糸を得ることができ、さらに太デニール成分の伸
度と細デニール成分の伸度とを逆転させ、太デニール成
分を低伸度とする画期的な紡糸混繊も可能となり、その
工業的意義は極めて大きい。According to the method of the present invention, even if the spinneret temperature and the spinning temperature are lowered, the yarn is less likely to become weak, and the yarn is less likely to become weak than the conventional spinning draft.
Since it is possible to apply a spinning draft that is more than an order of magnitude larger, or even two orders of magnitude larger in some cases, it is possible to obtain a blended yarn with an extremely large difference in elongation, and in addition, the elongation of the thick denier component and the elongation of the fine denier component can be improved. By reversing the above, it has become possible to create an innovative blended yarn in which the high denier component has low elongation, which is of great industrial significance.
第１図は、本発明の混繊糸の製造に用いることができる
、吐出孔面が下部に位置しかつその吐出孔の断面積が連
続的に拡大する吐出孔を有する紡糸口金の１態様を示す
。
第２〜３図は、本発明の製造法に使用できる紡糸口金の
他の態様を示し、第２図はＡ孔の断面積が連続的に縮小
する場合、第３図はＡ孔の断面積が連続的に拡大する場
合を示す。
第４図は、本発明の方法で得られる混繊糸の応力（Ｓｔ
）−伸度（Ｅｌｌり曲線を示し、特に細デニール成分が
低伸度の場合を示す。
第５図は、本発明の方法で得られる混繊糸の応力（Ｓｔ
）−伸度（ＥＩ２）曲線で、特に太デニール成分が低伸
度の場合を示す。
第６図は、従来検討されている紡糸口金の模式第７図は
、本発明の方法以外の方法で得られる混繊糸の応力（Ｓ
ｔ）−伸度（Ｅり曲線を示す。
図中、１．１′はポリマーの導入部、２．２′は導入部
が終了する点、３，３′は吐出孔の断面積が最大となる
点、’ＡＩ＋ ｉ、Ａ２およびｆ ＩＩＩ、 ｆｆ
ｉ Ｂ２はそれぞれ２．２′および３．３′の地点の直
径を示す。ｆｆ１ｃ＋＋ ＩｃＺはそれぞれ２〜３お
よび２′〜３′の距離、Ｌは吐出孔Ａと吐出孔Ｂの吐出
面の距離を示す。
特許出願人 帝 人 株式会社
代理人 弁理士 白 井 重 隆
第１図
第２図
第３図
第４図
第５図
第６図FIG. 1 shows one embodiment of a spinneret having a discharge hole in which the discharge hole surface is located at the bottom and the cross-sectional area of the discharge hole continuously increases, which can be used for manufacturing the mixed fiber yarn of the present invention. show. 2 and 3 show other embodiments of the spinneret that can be used in the production method of the present invention, FIG. 2 shows a case in which the cross-sectional area of the A hole decreases continuously, and FIG. 3 shows a case in which the cross-sectional area of the A hole decreases continuously. This shows the case in which is continuously expanded. Figure 4 shows the stress (St) of the mixed yarn obtained by the method of the present invention.
) - Elongation (Ell curve), especially when the fine denier component has low elongation. Figure 5 shows the stress (St) of the mixed fiber yarn obtained by the method of the present invention.
)-elongation (EI2) curve, which particularly shows the case where the thick denier component has low elongation. Figure 6 shows a schematic diagram of a spinneret that has been studied in the past. Figure 7 shows the stress (S
t) - Elongation (E curve is shown. In the figure, 1.1' is the introduction part of the polymer, 2.2' is the point where the introduction part ends, and 3,3' is the point where the cross-sectional area of the discharge hole is maximum. point, 'AI+ i, A2 and f III, ff
i B2 indicates the diameter at points 2.2' and 3.3', respectively. ff1c++ IcZ are the distances of 2 to 3 and 2' to 3', respectively, and L is the distance between the discharge surfaces of the discharge holes A and B. Patent Applicant Teijin Co., Ltd. Agent Patent Attorney Shige Takashi Shirai Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6
Claims (4)
る複数の吐出孔面を有する紡糸口金を用いて混繊糸を得
る方法において、該複数の吐出孔面の中で下部に位置す
る吐出孔面に、少なくとも断面積が連続的に拡大する吐
出孔を設置した紡糸口金を用いることを特徴とする、伸
度差を有する混繊糸の製造方法。(1) In a method for obtaining a mixed yarn using a spinneret having a plurality of discharge hole surfaces in which molten polymer is discharged from different positions, the discharge hole is located at the lower part of the plurality of discharge hole surfaces. A method for producing a mixed fiber yarn having a difference in elongation, the method comprising using a spinneret in which a discharge hole whose cross-sectional area at least continuously expands is installed on the hole surface.
他の異なる吐出孔の口金面温度より低い、請求項１記載
の伸度差を有する混繊糸の製造方法。(2) The method for producing a mixed fiber yarn having a difference in elongation according to claim 1, wherein the temperature of the mouth surface of the discharge hole whose cross-sectional area continuously increases is lower than the temperature of the mouth surface of other different discharge holes.
なる断面積が少なくとも０．１９６２ｍｍ＾２である請
求項１記載の伸度差を有する混繊糸の製造方法。(3) The method for producing a mixed fiber yarn having a difference in elongation according to claim 1, wherein the maximum cross-sectional area of the discharge hole whose cross-sectional area continuously increases is at least 0.1962 mm^2.
たはポリアミドである請求項１記載の伸度差を有する混
繊糸の製造方法。(4) The method for producing a mixed fiber yarn having a difference in elongation according to claim 1, wherein the molten polymer is a thermoplastic polyester and/or a polyamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32307890A JP2866190B2 (en) | 1990-11-28 | 1990-11-28 | Method for producing mixed fiber having different elongation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32307890A JP2866190B2 (en) | 1990-11-28 | 1990-11-28 | Method for producing mixed fiber having different elongation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04194010A true JPH04194010A (en) | 1992-07-14 |
| JP2866190B2 JP2866190B2 (en) | 1999-03-08 |
Family
ID=18150843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32307890A Expired - Lifetime JP2866190B2 (en) | 1990-11-28 | 1990-11-28 | Method for producing mixed fiber having different elongation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2866190B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723265B1 (en) | 1999-01-25 | 2004-04-20 | Teijin Limited | Method for producing polyester-based combined filament yarn |
| JP2014167186A (en) * | 2013-02-28 | 2014-09-11 | Toray Ind Inc | Sea-island type composite fiber comprising polylactic acid and polyglycolic acid |
-
1990
- 1990-11-28 JP JP32307890A patent/JP2866190B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6723265B1 (en) | 1999-01-25 | 2004-04-20 | Teijin Limited | Method for producing polyester-based combined filament yarn |
| JP2014167186A (en) * | 2013-02-28 | 2014-09-11 | Toray Ind Inc | Sea-island type composite fiber comprising polylactic acid and polyglycolic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2866190B2 (en) | 1999-03-08 |
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