JP2001348741A - Method for producing bulky polyester yarn - Google Patents

Method for producing bulky polyester yarn

Info

Publication number
JP2001348741A
JP2001348741A JP2000170038A JP2000170038A JP2001348741A JP 2001348741 A JP2001348741 A JP 2001348741A JP 2000170038 A JP2000170038 A JP 2000170038A JP 2000170038 A JP2000170038 A JP 2000170038A JP 2001348741 A JP2001348741 A JP 2001348741A
Authority
JP
Japan
Prior art keywords
yarn bundle
yarn
cooling
heat treatment
bundle
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
JP2000170038A
Other languages
Japanese (ja)
Inventor
Hirokazu Yamaoka
弘和 山岡
Yasutake Matsui
健剛 松井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Ester Co Ltd
Original Assignee
Nippon Ester Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Ester Co Ltd filed Critical Nippon Ester Co Ltd
Priority to JP2000170038A priority Critical patent/JP2001348741A/en
Publication of JP2001348741A publication Critical patent/JP2001348741A/en
Pending legal-status Critical Current

Links

Landscapes

  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a bulky polyester yarn capable of supplying excellent bulkiness even by using a yarn obtained by an ordinary method and finely controlling a crimp state. SOLUTION: This method for producing a bulky polyester yarn comprises bundling a yarn which is obtained by melt spinning and cooled to give an undrawn yarn bundle Y, drawing the undrawn yarn bundle Y, subjecting the yarn bundle to a contact heat treatment, cooling the yarn bundle immediately after the heat treatment, adjusting the temperature of the yarn bundle Y to a glass transition temperature to 100 deg.C, introducing the yarn bundle to a next crimping process, further providing the yarn bundle with a crimp and recooling the yarn bundle after crimping in the method for producing the bulky polyester yarn.

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、詰綿用途等に好適
な優れた嵩高性を有する嵩高ポリエステル繊維の製造方
法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a bulky polyester fiber having excellent bulkiness suitable for use in cotton filling and the like.

【0002】[0002]

【従来の技術】従来より、詰綿用途を主とする嵩高ポリ
エステル繊維は、吐出糸条を冷却した後、複数の糸条を
集束して糸条束とし、これらを延伸後、接触加熱により
熱処理し、クリンパーにより機械捲縮を付与した後、弛
緩熱処理を施すという製造方法が採られていた。
2. Description of the Related Art Conventionally, bulky polyester fibers mainly used for cotton filling are prepared by cooling a discharge yarn, then bundling a plurality of yarns into a yarn bundle, stretching these, and heat-treating them by contact heating. Then, a manufacturing method has been employed in which a mechanical crimp is applied by a crimper and then a relaxation heat treatment is performed.

【0003】この方法で製造する場合、単一成分の中空
繊維又は非中空繊維等を用いると、優れた嵩高性を得る
ことが難しいという問題があった。そこで、複合紡糸に
よって得た異成分複合繊維、吐出糸条を非対称に急冷す
ることにより構造差を持たせた繊維を用いる製造方法も
行われている。
[0003] In the production by this method, there is a problem that it is difficult to obtain excellent bulkiness when a single component hollow fiber or non-hollow fiber is used. Therefore, a production method using a heterocomponent conjugate fiber obtained by conjugate spinning and a fiber having a structural difference by asymmetrically rapidly cooling the discharged yarn has been performed.

【0004】しかしながら、複合紡糸による異成分複合
繊維、吐出糸条を非対称に急冷することにより構造差を
持たせた繊維とするには製造工程が複雑になり、コスト
もかかることから、単一成分の中空繊維または非中空繊
維を用いて製造する方法が模索されていた。
[0004] However, the production process becomes complicated and costly in order to obtain heterogeneous conjugate fibers obtained by conjugate spinning and fibers having a structural difference by asymmetrically quenching the discharged yarn. A method for producing a hollow fiber or a non-hollow fiber has been sought.

【0005】また、クリンパーによる機械捲縮は、捲縮
力が弱く、繊維が平面形状を示すため優れた嵩高性付与
することができないという問題があった。このように、
単一成分の中空繊維または非中空繊維を用い、延伸後に
クリンパーによる機械捲縮を付与した場合、高い嵩高性
を得ることは難しかった。
[0005] In addition, mechanical crimping by a crimper has a problem that crimping force is weak and excellent bulkiness cannot be imparted because the fiber has a planar shape. in this way,
When a single component hollow fiber or non-hollow fiber was used and mechanical crimping was performed by a crimper after stretching, it was difficult to obtain high bulkiness.

【0006】さらに、近年、布団綿、詰綿等の加工業者
及び消費者の多岐にわたるニーズに対応し、各種の捲縮
形態、いわゆる嵩高性の異なる原綿を要求されるように
なっっており、より簡易な方法で要望にあった嵩高性能
を付与することができる嵩高ポリエステル繊維の製造方
法が求められていた。
Further, in recent years, in response to a wide variety of needs of processors and consumers such as futon cotton and wadding, various types of crimping, that is, raw cotton having different bulkiness, have been demanded. There has been a demand for a method for producing a bulky polyester fiber which can provide a desired bulk performance with a simpler method.

【0007】[0007]

【発明が解決しようとする課題】本発明は、上記の問題
点を解決するものであって、単一成分の中空繊維または
非中空繊維を用いても、優れた嵩高性を付与することが
でき、かつ捲縮状態の微妙なコントロールが可能となる
嵩高ポリエステル繊維の製造方法を提供することを技術
的な課題とするものである。
DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems, and can provide excellent bulkiness even when a single component hollow fiber or non-hollow fiber is used. An object of the present invention is to provide a method for producing a bulky polyester fiber which allows fine control of a crimped state.

【0008】[0008]

【課題を解決するための手段】本発明者らは上記課題を
解決するために、検討した結果、本発明に到達した。す
なわち、本発明は、嵩高ポリエステル繊維の製造方法に
おいて、溶融紡糸し、冷却した糸条を集束して未延伸糸
条束とし、この未延伸糸条束を延伸した後、接触熱処理
し、接触熱処理直後に冷却を施し、糸条束の温度をガラ
ス転移温度〜100℃として次の捲縮工程に導いて捲縮
を付与し、さらに、捲縮付与後に再度冷却を施すことを
特徴とする嵩高ポリエステル繊維の製造方法を要旨とす
るものである。
Means for Solving the Problems The present inventors have studied to solve the above problems, and as a result, have reached the present invention. That is, the present invention relates to a method for producing a bulky polyester fiber, wherein a melt-spun and cooled yarn is bundled into an undrawn yarn bundle, and after the undrawn yarn bundle is drawn, a contact heat treatment is performed, and a contact heat treatment is performed. Immediately after cooling, the temperature of the yarn bundle is set to the glass transition temperature to 100 ° C., the crimping step is performed to give a crimp, and further cooling is performed after the crimp is applied. The gist of the invention is a method for producing a fiber.

【0009】[0009]

【発明の実施の形態】以下、本発明を図面を用いて詳細
に説明する。図1は、本発明の嵩高ポリエステル繊維の
製造方法の一実施態様を示す概略工程図である。本発明
においては、溶融紡糸した糸条を集束して未延伸糸条束
とし、延伸した後、糸条束に加熱処理と捲縮付与を行う
ものである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic process diagram showing one embodiment of the method for producing a bulky polyester fiber of the present invention. In the present invention, the heat-spun yarn is subjected to heat treatment and crimping after the melt-spun yarn is bundled into an undrawn yarn bundle, stretched, and drawn.

【0010】本発明の製造方法を適用できるポリエステ
ル繊維は、特に限定されるものではなく、ポリエチレン
テレフタレート(PET)やポリブチレンテレフタレー
ト(PBT)が好ましく用いられる。これらのポリエス
テルは、性能を損なわない範囲であれば、共重合成分を
含有していてもよく、各種の添加剤(顔料、難燃剤、艶
消剤等)を含有したものでもよい。
The polyester fiber to which the production method of the present invention can be applied is not particularly limited, and polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) are preferably used. These polyesters may contain a copolymer component as long as the performance is not impaired, and may contain various additives (pigment, flame retardant, matting agent, etc.).

【0011】まず、溶融紡糸直後の糸条の冷却は特に限
定されるものではなく、通常の冷却装置を用いて行い、
複数の糸条を集束して未延伸糸条束とする。未延伸糸条
束の繊度は特に限定されるものではなく、延伸後の繊度
で単糸繊度が4〜20dtex程度のものとすることが
好ましい。そして、延伸条件も特に限定されるものでは
なく、複数のローラ間で60〜100℃で熱処理しなが
ら、3.0〜4.5倍程度の倍率で延伸することが好ま
しい。
First, the cooling of the yarn immediately after the melt spinning is not particularly limited, and is performed using a normal cooling device.
A plurality of yarns are bundled to form an undrawn yarn bundle. The fineness of the undrawn yarn bundle is not particularly limited, and it is preferable that the fineness of the single yarn after drawing is about 4 to 20 dtex. The stretching conditions are not particularly limited, and the stretching is preferably performed at a magnification of about 3.0 to 4.5 times while performing heat treatment at 60 to 100 ° C. between a plurality of rollers.

【0012】そして、延伸後、糸条束を接触熱処理し、
その直後に冷却を行う。接触熱処理はヒータを用いた
り、加熱ローラを用いることができる。例えば、図1に
示すように、ローラ間で延伸した糸条束Yを、引き続い
てヒートドラム1〜5で接触熱処理する方法が挙げられ
る。
After drawing, the yarn bundle is subjected to a contact heat treatment,
Immediately after that, cooling is performed. For the contact heat treatment, a heater or a heating roller can be used. For example, as shown in FIG. 1, there is a method in which a yarn bundle Y stretched between rollers is subjected to contact heat treatment with heat drums 1 to 5 subsequently.

【0013】接触熱処理時の温度としては、70〜20
0℃とすることが好ましく、特に100〜150℃とす
ることが好ましい。
The temperature during the contact heat treatment is 70 to 20.
The temperature is preferably set to 0 ° C, particularly preferably 100 to 150 ° C.

【0014】接触熱処理直後に糸条束を冷却する際に
は、次の捲縮工程に導く際に糸条束の温度がガラス転移
温度〜100℃となるように冷却することが必要であ
る。すなわち、延伸、接触熱処理を施し、結晶構造が流
動している糸条束を、熱処理直後に冷却することによ
り、延伸糸条束が縮む前に結晶化を促進させる。そし
て、このような低い温度として糸条束を捲縮工程に導く
ことにより、糸条束が軟化した状態で捲縮工程に送るこ
とができ、捲縮を十分に付与することが可能となる。
When cooling the yarn bundle immediately after the contact heat treatment, it is necessary to cool the yarn bundle so that the temperature of the yarn bundle becomes the glass transition temperature to 100 ° C. when leading to the next crimping step. That is, drawing and contact heat treatment are performed, and the yarn bundle in which the crystal structure is flowing is cooled immediately after the heat treatment, thereby promoting crystallization before the drawn yarn bundle shrinks. Then, by guiding the yarn bundle to the crimping step at such a low temperature, the yarn bundle can be sent to the crimping step in a softened state, and it becomes possible to sufficiently impart crimp.

【0015】接触熱処理の直後とは、製造条件にもよる
が、通常の糸条の走行速度が170〜190m/分の場
合、接触熱処理後2秒以内とすることが好ましい。2秒
を超えると、延伸繊維束が縮んでしまい、縮む前に結晶
化を促進させることが困難となりやすい。
The term "immediately after the contact heat treatment" is preferably within 2 seconds after the contact heat treatment when the ordinary running speed of the yarn is 170 to 190 m / min, depending on the production conditions. If it exceeds 2 seconds, the drawn fiber bundle shrinks, and it becomes difficult to promote crystallization before shrinking.

【0016】このような冷却を行う方法としては、糸条
束に冷却水を付与して冷却することが好ましく、上記の
ような温度で接触熱処理を行う場合、5〜30℃の水を
付与することが好ましい。水の温度が5℃未満である
と、糸条束Yの温度がTg未満となりやすく、糸条束が
硬化し、後工程で捲縮を付与しても十分な嵩高性が得ら
れにくくなる。一方、30℃を超えると、冷却の効果が
得られにくく、結晶化を促進させることが困難となる。
As a method for performing such cooling, it is preferable to provide cooling by applying cooling water to the yarn bundle. In the case of performing the contact heat treatment at the above temperature, water at 5 to 30 ° C. is applied. Is preferred. When the temperature of the water is less than 5 ° C., the temperature of the yarn bundle Y tends to be lower than Tg, the yarn bundle is hardened, and it becomes difficult to obtain sufficient bulkiness even when crimping is applied in a later step. On the other hand, when the temperature exceeds 30 ° C., it is difficult to obtain a cooling effect, and it becomes difficult to promote crystallization.

【0017】水としては、蒸留水、イオン交換水等が好
ましい。また、水の付与方法も特に限定されるものでな
いが、例えば、均一に付与するためにシャワーやスプレ
ーを用いることが好ましく、流量は0.5〜8リットル
/分とすることが好ましい。
As the water, distilled water, ion-exchanged water and the like are preferable. The method for applying water is not particularly limited, either. For example, it is preferable to use a shower or a spray for uniform application, and the flow rate is preferably 0.5 to 8 liter / min.

【0018】このとき、糸条束Yの温度が100℃以上
を超えると、捲縮を付与する際に糸条束Yの一部が溶融
し、密着してしまい、捲縮を良好に付与することができ
なくなる。一方、Tg未満であると、糸条束が硬化して
おり、捲縮を付与しても嵩高性が不十分となる。
At this time, when the temperature of the yarn bundle Y exceeds 100 ° C. or more, a part of the yarn bundle Y is melted and adhered when crimping is applied, and the crimp is satisfactorily applied. You will not be able to do it. On the other hand, when it is less than Tg, the yarn bundle is hardened and the bulkiness becomes insufficient even if crimping is applied.

【0019】糸条束Yの温度をこのようなものとするに
は、接触熱処理直後に冷却を施した後、スチームボック
ス15等を用いて100〜200℃程度の加熱を行って
もよい。なお、捲縮工程に導く前の糸条束の温度は、図
1に示すように、捲縮付与装置(クリンパー16)の直
前にセンサー18等を設けて測定したものとすることが
好ましい。
In order to set the temperature of the yarn bundle Y to such a value, the yarn bundle Y may be cooled immediately after the contact heat treatment, and then heated at about 100 to 200 ° C. using the steam box 15 or the like. Note that the temperature of the yarn bundle before leading to the crimping step is shown in FIG.
As shown in FIG. 1, it is preferable that the measurement is performed by providing a sensor 18 or the like immediately before the crimping device (crimper 16).

【0020】捲縮はクリンパー等を用いて要求される性
能に応じて捲縮数を適宜変更して付与すればよいが、十
分な嵩高性を得るためには、7山/25mm〜14山/
25mm付与することが好ましい。
The number of crimps may be changed by appropriately changing the number of crimps according to the required performance using a crimper or the like, but in order to obtain sufficient bulkiness, 7 ridges / 25 mm to 14 ridges /
It is preferable to apply 25 mm.

【0021】さらに、捲縮が付与された直後、糸条束Y
に再度冷却を施す。この冷却によって糸条束を結晶化さ
せ、付与した捲縮を定着させることができ、嵩高性が維
持されることとなる。そこで、冷却方法としては、糸条
束に冷却水を付与して冷却することが好ましく、5〜3
0℃の水を付与することが好ましい。水の温度が5℃未
満であると、糸条束Yが硬化してしまい、後のカット工
程での操業性が悪くなりやすい。一方、30℃を超える
と、上記のような冷却の効果が得られにくくなる。
Further, immediately after the crimp is applied, the yarn bundle Y
Is cooled again. By this cooling, the yarn bundle is crystallized, the applied crimp can be fixed, and the bulkiness can be maintained. Therefore, as a cooling method, it is preferable to provide cooling by applying cooling water to the yarn bundle.
Preferably, water at 0 ° C. is applied. When the temperature of the water is lower than 5 ° C., the yarn bundle Y is hardened, and the operability in the subsequent cutting step is likely to be deteriorated. On the other hand, when the temperature exceeds 30 ° C., it becomes difficult to obtain the above-described cooling effect.

【0022】また、水としては、蒸留水、イオン交換水
等が好ましい。また、水の付与方法も特に限定されるも
のでないが、例えば、均一に付与するためにシャワーや
スプレーを用いることが好ましく、流量は0.5〜8リ
ットル/分とすることが好ましい。
The water is preferably distilled water, ion-exchanged water, or the like. The method for applying water is not particularly limited, either. For example, it is preferable to use a shower or a spray for uniform application, and the flow rate is preferably 0.5 to 8 liter / min.

【0023】本発明の製造方法で得られたポリエステル
繊維は、カット工程を経て短繊維とするが、カット手
段、カット長は特に限定されるものではなく、用途に応
じて行えばよい。
The polyester fiber obtained by the production method of the present invention is converted into a short fiber through a cutting step, but the cutting means and the cut length are not particularly limited, and may be determined according to the use.

【0024】図1を用いて、本発明の一例を説明する。
延伸を施した糸条束Yを加熱したヒートドラム1〜5に
より接触加熱し、冷却水付与シャワー6によって冷却す
る。冷却水付与シャワー6は熱交換器10から流量計8
を通って水が吐出され、温度と流量が調整できる。冷却
水付与シャワー6によって冷却された糸条束Yは、ダン
サーローラ11〜14を通過し、スチームボックス15
により再び加熱され、クリンパー16により捲縮が付与
される。
An example of the present invention will be described with reference to FIG.
The drawn yarn bundle Y is contact-heated by the heated heat drums 1 to 5 and cooled by the cooling water application shower 6. The cooling water application shower 6 is connected to the heat exchanger 10 through the flow meter 8.
The water is discharged through and the temperature and flow rate can be adjusted. The yarn bundle Y cooled by the cooling water imparting shower 6 passes through the dancer rollers 11 to 14, and
, And is crimped by the crimper 16.

【0025】このとき、糸条束Yの温度はセンサー18
によって測定され、糸条束Yの温度は、冷却水付与シャ
ワー6より付与する水の温度及び流量で調節する。捲縮
が付与され、キャナル17上に導かれた糸条束は、冷却
水付与スプレー7により再度冷却される。冷却水付与ス
プレー7も同様に、熱交換器10から流量計9を通って
水が吐出され、温度と流量が調整できる。
At this time, the temperature of the yarn bundle Y is
The temperature of the yarn bundle Y is adjusted by the temperature and the flow rate of the water supplied from the cooling water supply shower 6. The crimped yarn bundles guided on the canals 17 are cooled again by the cooling water application spray 7. Similarly, the cooling water application spray 7 discharges water from the heat exchanger 10 through the flow meter 9 so that the temperature and the flow rate can be adjusted.

【0026】[0026]

【作用】本発明の製造方法によれば、まず、接触熱処理
直後に糸条束を冷却することによって、延伸繊維束が縮
んでしまう前に結晶化を促進することができる。そし
て、糸条束の温度をTg〜100℃としてクリンパーに
導くことによって、延伸繊維束が軟化した状態で捲縮が
付与できるため、捲縮を付与することが容易となり、効
率的である。さらに、捲縮付与後に再度糸条束を冷却す
ることによって、延伸繊維束を結晶化させ、付与した捲
縮を定着させることができる。したがって、このような
冷却により、捲縮の微妙なコントロールが可能になると
ともに、特に高荷重下で使用する際の嵩高性が優れたポ
リエステル原綿を効率よく製造することができる。
According to the production method of the present invention, first, by cooling the yarn bundle immediately after the contact heat treatment, crystallization can be promoted before the drawn fiber bundle shrinks. The crimping can be performed in a state where the drawn fiber bundle is softened by setting the temperature of the yarn bundle to Tg to 100 ° C. and guided to the crimper. Further, by cooling the yarn bundle again after the application of the crimp, the drawn fiber bundle can be crystallized and the applied crimp can be fixed. Therefore, such cooling enables fine control of crimp and enables efficient production of a raw polyester fiber having excellent bulkiness particularly when used under a high load.

【0027】[0027]

【実施例】次に、本発明を実施例を用いてさらに具体的
に説明する。なお、捲縮数はJIS L 1015 7
−12−1の方法により測定し、捲縮率はJIS L
1015 7−12−2の方法により測定した。捲縮性
能は、次のようにして求めた初加重比容積と圧縮加重比
容積により評価した。 (初加重比容積)得られたポリエステル短繊維80gを
用いてカーディングしたサンプル(一辺20cm四方)
の上に、0.425g/cm2の荷重を与え、30秒経
過後のサンプルの体積Xを求め、(X÷80)で求めた
ものを初加重比容積(cm3/g)とした。 (圧縮加重比容積)上記のサンプルに13.5g/cm
2の荷重を用いて圧縮、解放を5分間ずつ4回繰り返
し、5回目に荷重を与えてから5分経過後のサンプルの
体積Yを求め、(Y÷80)で求めたものを圧縮加重比
容積(cm3/g)とした。
Next, the present invention will be described more specifically with reference to examples. The number of crimps is JIS L 10157
Measured according to the method of -12-1.
It was measured by the method of 1015 7-12-2. The crimping performance was evaluated based on the initial load specific volume and compression load specific volume obtained as follows. (Initial load specific volume) Carded sample (80 cm square) using 80 g of obtained polyester short fiber
A load of 0.425 g / cm 2 was applied to the sample, the volume X of the sample after 30 seconds had elapsed was determined, and the value determined by (X ÷ 80) was defined as the initial weighting specific volume (cm 3 / g). (Compression weight specific volume) 13.5 g / cm
The compression and release were repeated four times for 5 minutes each using the load of 2 , and the volume Y of the sample after 5 minutes from the application of the fifth load was determined. The compression weighting ratio was determined by (Y ÷ 80). Volume (cm 3 / g).

【0028】実施例1〜2、比較例1 極限粘度0.67のPET(Tg76℃)を用い、紡糸温
度250℃、引取速度850m/分で500ホールの紡
糸口金から押し出した。吐出された糸条に環状冷却装置
により25℃の冷却風を吹き付けて冷却し、溶融紡糸し
た12錘分を集束して収納容器に収納し、110kte
xの未延伸糸条束とした。このようにして得た未延伸糸
条束を延伸温度80℃、延伸速度190m/分で4.2
倍に延伸した後、図1に示す装置を用いて接触熱処理、
捲縮付与を行った。まず、130℃のヒートドラム1〜
5で接触熱処理後1秒後に糸条束Yに冷却水シャワー6
から表1に示す流量と温度の冷却水を付与し、続いて1
00℃のスチームボックス15で再び加熱してクリンパ
ー16にて13回/25mmの機械捲縮を付与した。そ
の後、表1に示す流量と温度の冷却水を糸条束に付与し
て冷却を行った。最後に糸条束を51mmの長さに切断
して嵩高ポリエステル短繊維を得た。
Examples 1 and 2 and Comparative Example 1 A PET (Tg of 76 ° C.) having an intrinsic viscosity of 0.67 was extruded from a 500-hole spinneret at a spinning temperature of 250 ° C. and a take-up speed of 850 m / min. The discharged yarn is cooled by blowing cooling air at 25 ° C. by an annular cooling device, and the melt-spun 12 weights are bundled and stored in a storage container.
x undrawn yarn bundle. The unstretched yarn bundle thus obtained is subjected to a stretching temperature of 80 ° C. and a stretching speed of 190 m / min.
After stretching twice, contact heat treatment using the apparatus shown in FIG.
A crimp was applied. First, heat drum 1 at 130 ° C
One second after the contact heat treatment in step 5, the cooling water shower 6 is applied to the yarn bundle Y.
The cooling water having the flow rate and temperature shown in Table 1 was applied from
The sheet was heated again in the steam box 15 at 00 ° C., and was mechanically crimped 13 times / 25 mm by the crimper 16. Thereafter, cooling water having a flow rate and a temperature shown in Table 1 was applied to the yarn bundle to perform cooling. Finally, the yarn bundle was cut to a length of 51 mm to obtain bulky polyester short fibers.

【0029】比較例2 接触熱処理直後の冷却を行わなかった以外は実施例1と
同様にして行った。
Comparative Example 2 The same procedure as in Example 1 was carried out except that cooling was not performed immediately after the contact heat treatment.

【0030】比較例3 接触熱処理直後の冷却を表1に示す条件で行い、捲縮付
与後の冷却を行わなかった以外は実施例1と同様にして
行った。
Comparative Example 3 The cooling was performed in the same manner as in Example 1 except that cooling immediately after the contact heat treatment was performed under the conditions shown in Table 1 and cooling after crimping was not performed.

【0031】比較例4 接触熱処理直後の冷却と捲縮付与後の冷却を行わなかっ
た以外は実施例1と同様にして行った。
Comparative Example 4 The procedure of Example 1 was repeated except that the cooling immediately after the contact heat treatment and the cooling after crimping were not performed.

【0032】実施例1〜2、比較例1〜4で得られた繊
維の捲縮性能を評価した結果を表1に示す。
Table 1 shows the results of evaluating the crimping performance of the fibers obtained in Examples 1 and 2 and Comparative Examples 1 to 4.

【0033】[0033]

【表1】 [Table 1]

【0034】表1から明らかなように、実施例1、2で
得られた繊維は捲縮率が高く、嵩高性にも優れ、高荷重
下でも十分な嵩高性を有していた。一方、比較例1は、
捲縮工程に導く前の糸条束の温度が高すぎたため、比較
例2は接触熱処理直後の冷却を施さなかったため、比較
例3は捲縮付与後の冷却を施さなかったため、比較例4
は接触熱処理直後の冷却と捲縮付与後の冷却ともに施さ
なかったため、これらのポリエステル繊維は捲縮率が低
く、嵩高性にも劣るものであった。
As is clear from Table 1, the fibers obtained in Examples 1 and 2 had a high crimp ratio, excellent bulkiness, and had sufficient bulkiness even under a high load. On the other hand, Comparative Example 1
Since the temperature of the yarn bundle before leading to the crimping step was too high, Comparative Example 2 was not cooled immediately after the contact heat treatment, and Comparative Example 3 was not cooled after the crimp was applied.
Since neither cooling immediately after contact heat treatment nor cooling after crimping was performed, these polyester fibers had a low crimp rate and were inferior in bulkiness.

【0035】[0035]

【発明の効果】本発明の製造方法によれば、通常の方法
で得られた繊維を用いても優れた嵩高性を付与すること
ができ、かつ捲縮状態の微妙なコントロールができ、詰
綿用途等、特に高荷重下で使用する際にも優れた嵩高性
を有するポリエステル短繊維を低コストで得ることが可
能となる。
According to the production method of the present invention, excellent bulkiness can be imparted by using a fiber obtained by an ordinary method, and fine control of the crimped state can be achieved. Polyester staple fibers having excellent bulkiness can be obtained at low cost even when used under a high load, for example, in applications.

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

【図1】本発明の嵩高ポリエステル繊維の製造方法の一
実施態様を示す概略工程図である。
FIG. 1 is a schematic process chart showing one embodiment of a method for producing a bulky polyester fiber of the present invention.

【符号の説明】[Explanation of symbols]

Y 糸条束 1〜5 ヒートドラム 6 冷却水付与シャワー 7 冷却水付与スプレー 8、9 流量計 10 熱交換器 11〜14 ダンサーローラ 15 スチームボックス 16 クリンパー 17 キャナル 18 センサー Y Yarn bundle 1-5 Heat drum 6 Cooling water applying shower 7 Cooling water applying spray 8,9 Flow meter 10 Heat exchanger 11-14 Dancer roller 15 Steam box 16 Crimper 17 Canal 18 Sensor

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 嵩高ポリエステル繊維の製造方法におい
て、溶融紡糸し、冷却した糸条を集束して未延伸糸条束
とし、この未延伸糸条束を延伸した後、接触熱処理し、
接触熱処理直後に冷却を施し、糸条束の温度をガラス転
移温度〜100℃として次の捲縮工程に導いて捲縮を付
与し、さらに、捲縮付与後に再度冷却を施すことを特徴
とする嵩高ポリエステル繊維の製造方法。
In a method for producing a bulky polyester fiber, a melt-spun and cooled yarn is bundled to form an undrawn yarn bundle, and the undrawn yarn bundle is drawn, and then subjected to a contact heat treatment,
Cooling is performed immediately after the contact heat treatment, the temperature of the yarn bundle is set to a glass transition temperature of 100 ° C., the process is led to the next crimping step, crimping is applied, and further cooling is performed after crimping is applied. A method for producing bulky polyester fibers.
JP2000170038A 2000-06-07 2000-06-07 Method for producing bulky polyester yarn Pending JP2001348741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000170038A JP2001348741A (en) 2000-06-07 2000-06-07 Method for producing bulky polyester yarn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000170038A JP2001348741A (en) 2000-06-07 2000-06-07 Method for producing bulky polyester yarn

Publications (1)

Publication Number Publication Date
JP2001348741A true JP2001348741A (en) 2001-12-21

Family

ID=18672807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000170038A Pending JP2001348741A (en) 2000-06-07 2000-06-07 Method for producing bulky polyester yarn

Country Status (1)

Country Link
JP (1) JP2001348741A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1323201C (en) * 2002-05-08 2007-06-27 三菱丽阳株式会社 Apparatus and method for shrinkage treating acrylonitrile fibers
CN113474500A (en) * 2019-03-01 2021-10-01 株式会社钟化 Polyester fiber having crimp, method for producing same, pile fabric comprising same, and method for producing pile fabric

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1323201C (en) * 2002-05-08 2007-06-27 三菱丽阳株式会社 Apparatus and method for shrinkage treating acrylonitrile fibers
CN113474500A (en) * 2019-03-01 2021-10-01 株式会社钟化 Polyester fiber having crimp, method for producing same, pile fabric comprising same, and method for producing pile fabric
CN113474500B (en) * 2019-03-01 2023-10-27 株式会社钟化 Polyester fiber having curl, method for producing same, pile fabric containing same, and method for producing pile fabric

Similar Documents

Publication Publication Date Title
TWI248994B (en) Machine-crimped synthetic fibers having latent three-dimensional crimping property and process for producing same
EP2220273B1 (en) Hot-melt adhesive polyester conjugate fiber
EP1636405A1 (en) Polytrimethylene terephthalate hollow composite staple fibers and process for producing same
WO2000043581A1 (en) Method for producing polyester-based combined filament yarn
JP2003527497A (en) Manufacture of poly (trimethylene) terephthalate woven staples
JP2001348741A (en) Method for producing bulky polyester yarn
JP2000336526A (en) Thermally adhesive composite fiber and its production
JP2000034619A (en) Production of heteroshrinkable polyester combined filament yarn
JP3888164B2 (en) Polyester monofilament and method for producing the same
JP3095942B2 (en) Method for producing polyester mixed fiber yarn
JP3001539B1 (en) Method for producing polyester mixed fiber yarn
CN1092721C (en) Making high filament count fine filament polyester yarns
JPH11302921A (en) High-hollow polyester fiber excellent in durability and fiber product using the same
JP3953883B2 (en) Acrylic fiber bulky processing apparatus and processing method thereof
JPH10331031A (en) Production of polyester combined filament yarn
JPH1121737A (en) Production of polyester ultrafine denier staple fiber
JPH11217731A (en) Thermoadhesive conjugate fiber and its production
JP2591715B2 (en) Method for producing different shrinkage blended polyester yarn
JPH0735606B2 (en) Method for manufacturing polyester thermal shrinkage difference mixed yarn
JP2003286619A (en) Method for producing thin set crimped tow from synthetic filaments, and further additionally processing into sanitary woven fabric article
JP2005307409A (en) Method for producing fiber for polyester artificial hair
KR100339998B1 (en) Manufacturing method of polyester superfine yarn
JPH11152634A (en) Production of combined filament yarn of polyester
JP3502686B2 (en) Biodegradable composite fiber
JP2001172834A (en) One-step method for producing polyester staple