JPS62110911A - Polyester fiber and production thereof - Google Patents

Polyester fiber and production thereof

Info

Publication number
JPS62110911A
JPS62110911A JP60247969A JP24796985A JPS62110911A JP S62110911 A JPS62110911 A JP S62110911A JP 60247969 A JP60247969 A JP 60247969A JP 24796985 A JP24796985 A JP 24796985A JP S62110911 A JPS62110911 A JP S62110911A
Authority
JP
Japan
Prior art keywords
polyester
polyester fiber
heat
δna
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP60247969A
Other languages
Japanese (ja)
Other versions
JPH0377286B2 (en
Inventor
Kenkichi Nose
能勢 健吉
Masakazu Fujita
正和 藤田
Katsutoshi Taniguchi
谷口 勝敏
Toshimasa Kuroda
黒田 俊正
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP60247969A priority Critical patent/JPS62110911A/en
Publication of JPS62110911A publication Critical patent/JPS62110911A/en
Publication of JPH0377286B2 publication Critical patent/JPH0377286B2/ja
Granted legal-status Critical Current

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  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

PURPOSE:To obtain the titled fibers, having high dye adsorptivity and capable of giving woven fabrics having soft feeling even after heat treatment, by spinning a molten polyester through extrusion holes having needlelike materials protruding from the spinneret surface at the extrusion central part under specific conditions and taking off the resultant filament yarn. CONSTITUTION:A polyester having ethylene terephthalate as main repeating units is melt extruded through extrusion holes having needlelike materials protruding downward from the spinneret surface at the extrusion central part into filaments, which are then run in a heat insulating zone at a temperature 10-30 deg.C lower than the surface temperature of the extruded polymer stream. After quenching and solidifying, the resultant filament yarn is taken off at 1,100-6,000m/min to afford the aimed polyester fibers, having a bifringence DELTAn and orientation degree DELTAna of the amorphous part, satisfying the formulas DELTAn>=0.03, DELTAna<=0.03 and DELTAna<=DELTAn-0.013 and capable of exhibiting self extensibility at 130 deg.C.

Description

【発明の詳細な説明】 (産業の利用分野) 本発明はポリエステル繊維及びその製造法に関し、更に
詳しくは、従来の高速紡糸によつ℃得られるポリエステ
ル繊維よりも良好な染色性を有1−1且つ仕上工程の熱
処理によってソフトな風合の織物が得られるポリエステ
ル繊維及びその製造法に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a polyester fiber and a method for producing the same. 1. The present invention relates to polyester fibers that can be fabricated with a soft texture by heat treatment in the finishing process, and a method for producing the same.

(従来技術) 一般的K、ポリエステル繊維、特にポリエチレンテレフ
タレート繊維は、ポリエステルを溶融紡糸して得られる
未延伸糸を延伸熱セットして実用に供し得る物性を付与
してから織物等の用途に供せられ℃いる。
(Prior art) General polyester fibers, especially polyethylene terephthalate fibers, are produced by melt-spinning polyester, undrawn yarns are drawn and heat-set to impart practical properties, and then used for textiles and other purposes. It's cold.

かかる織物には、通常、その仕上工程において130℃
以上の温度で熱処理が施されているが、熱処理後の織物
の風合は粗硬になり易い欠点を有し℃いる。
Such textiles are usually heated to 130°C during the finishing process.
Although heat treatment is carried out at a temperature above 0.5°C, the texture of the fabric after heat treatment tends to be rough and hard.

かかる現象は、織物を構成するポリエステル繊維が仕上
工程の一連の熱処理によって収縮するためである。
This phenomenon occurs because the polyester fibers that make up the fabric shrink during a series of heat treatments during the finishing process.

この様な欠点は、130℃以上の温度で収縮することな
く自己伸長を示すポリエステル繊維、例えば米国特許第
3,771.307号明細書で知られ℃いる複屈折率(
Δn)が0.03以上の中間配向糸(以下、POYと称
することがある)を用いれば、解消するものと考えられ
るが、前記POYは、そのままの状態で実用に供し得る
力学的特性を有【、ておらず、更に延伸熱セット等の処
理を要する。
Such drawbacks are due to the fact that polyester fibers that exhibit self-stretching without shrinkage at temperatures above 130°C, e.g. known from U.S. Pat. No. 3,771,307,
It is thought that this problem can be solved by using an intermediately oriented yarn (hereinafter sometimes referred to as POY) with Δn) of 0.03 or more, but the POY has mechanical properties that can be put to practical use as it is. [No, it requires further treatment such as stretching heat setting.

そして、POYを延伸熱セットし℃得られるポリエステ
ル繊維は、通常の延伸糸と同様な特性を有t−130℃
以上の温度で収縮を示す。
The polyester fiber obtained by drawing and heat setting POY has the same characteristics as ordinary drawn yarn at t-130℃.
Shows contraction at temperatures above.

1、かも、通常のポリエステル延伸糸は、染色性が著し
く劣る欠点を有している。
1. Ordinary drawn polyester yarns have the disadvantage of extremely poor dyeability.

かかる従来のポリエステル延伸糸の欠点である染色性を
改善し得るポリエステル繊維として、特開昭57−13
3215号公報には、紡糸引取速度5000m/分以上
、特に7000m/分以上の高速紡糸によって得られる
複屈折率0.09以上のポリエステル繊維(以下、US
Yと称することがある)が示されている。
As a polyester fiber that can improve dyeability, which is a drawback of conventional drawn polyester yarns, Japanese Patent Application Laid-Open No. 57-13
No. 3215 discloses polyester fibers having a birefringence index of 0.09 or more (hereinafter referred to as US
(sometimes referred to as Y) is shown.

かかるUSY Kついて、先に本発明者等が追試したと
ころ、前記USYは延伸糸に近似した力学的特性を有り
一ているために延伸熱セットを施すことなく実用に供す
ることができ、且つ前述の延伸糸に比較し℃染色性が改
善されてはいるものの、その程度は僅少であって充分に
満足し得るものでなく、シかも130℃以上の温度にお
いて収縮を示すものであった。
The inventors of the present invention conducted additional tests on USY K and found that it has mechanical properties similar to those of drawn yarn, so it can be put to practical use without drawing and heat setting. Although the degree of dyeability at °C was improved compared to the drawn yarn of 2008, the extent of the improvement was so small that it was not fully satisfactory, and it also showed shrinkage at temperatures of 130°C or higher.

更に、この様なUSYを製造するためには、引取速度s
o00m/分以上、特に7000m/分以上の高速紡糸
を要するため、設備面からは勿論のこと、糸掛性等の作
業性の悪化及び断糸9毛羽等の増加による品質の悪化を
伴なうことからコスト高となり易く、経済的に引取速度
6000m/分を越える高速紡糸は好ましくない。
Furthermore, in order to manufacture such USY, the take-up speed s
Since high-speed spinning of 00 m/min or more, especially 7000 m/min or more is required, it not only affects the equipment, but also deteriorates workability such as yarn hanging property and quality due to increased yarn breakage and fuzz. Therefore, the cost tends to be high, and high-speed spinning with a take-up speed exceeding 6000 m/min is not economically preferred.

また、ポリエステル繊維の染色性を改善すべく、特公昭
59−47726号公報には複屈折率(Δn)が0.0
7〜0.14、非晶部配向度(Δna )が0.06以
下のポリエステル未延伸糸を、非加熱状態で延伸する方
法が提案されている。
In addition, in order to improve the dyeability of polyester fibers, Japanese Patent Publication No. 59-47726 discloses that the birefringence (Δn) is 0.0.
7 to 0.14, and a method of drawing an undrawn polyester yarn having an amorphous part orientation degree (Δna) of 0.06 or less in a non-heated state has been proposed.

確かに、この様にして得られるポリエステル繊維は、従
来の延伸糸よりも染色性がやや改善されてはいるが、か
かるポリエステル繊維も130℃以上の温度において収
縮を示すものである。
It is true that the polyester fibers obtained in this manner have slightly improved dyeability than conventional drawn yarns, but these polyester fibers also show shrinkage at temperatures of 130° C. or higher.

この様に、従来のポリエステル延伸糸に比較【、て染色
性が改善されるポリエステル帽1f、、、130℃以上
の温度おいて収縮を示すものであって、熱処理後に得ら
れる織物は粗硬な風合になり易いものである。
In this way, compared to conventional polyester drawn yarn, the dyeability is improved.The polyester cap 1f shows shrinkage at temperatures of 130°C or higher, and the fabric obtained after heat treatment is rough and hard. It is easy to change the texture.

(発明の目的) 本発明の目的は、前述の欠点を解消し得るポリエステル
帽り即ち従来のポリエステル延伸糸よりは勿論のこと、
POY及びUSYよりも染色性が改善され、且つ130
℃以上の温度で熱処理されてもソフトな風合の織物が得
られるポリエステル繊維及びその製造法を提供すること
にある。
(Object of the Invention) The object of the present invention is to provide a polyester cap which can eliminate the above-mentioned drawbacks, as well as a conventional drawn polyester yarn.
Stainability is improved compared to POY and USY, and 130
An object of the present invention is to provide a polyester fiber that can produce a fabric with a soft texture even when heat-treated at a temperature of 0.degree. C. or higher, and a method for producing the same.

(構成) 本発明者等は、前述の目的を達成せんとして検討した結
果、中心部に口金面よりも下方に突出[、ている針状物
を有する吐出孔からポリエステルを、一定範囲の温度に
保持されている雰囲気中に溶融吐出し、冷却固化せしめ
た後に特定の引取速度で引取ることによつ℃、曳好な染
色性と130℃以上の温度で自己伸長を示すポリエステ
ル繊維が初めて得られることを見い出j7、本発明に到
達した。
(Structure) As a result of studies to achieve the above-mentioned object, the present inventors have discovered that polyester is heated to a certain temperature range through a discharge hole having a needle-like object in the center that protrudes below the mouth surface. By melting and discharging into a maintained atmosphere, cooling and solidifying, and then taking it off at a specific take-up speed, polyester fibers were obtained for the first time that exhibited good dyeability and self-stretching at temperatures above 130°C. The inventors have discovered that the present invention is possible.

即ち、本発明の第1の発明は、主たる繰り返し単位がエ
チレンテレフタレートから成るポリエステル繊維であっ
て、その複屈折率(、<>、 n )及び非晶部配向度
(Δna )か下記(1)〜011)式を同時に満足し
、且つ下記(iv)式で定義されるSEが正であること
を特徴とするポリエステル繊維である。
That is, the first invention of the present invention is a polyester fiber whose main repeating unit is ethylene terephthalate, and whose birefringence (, <>, n) and degree of amorphous orientation (Δna) are as follows (1) -011) It is a polyester fiber characterized in that it simultaneously satisfies the following formulas and has a positive SE defined by the following formula (iv).

(1)  Δn≧0.03 (11Δna≦0.03 (III  Δna≦Δn−0,013また、本発明の
第2発明は、主たる繰り返し単位がエチレンテレフタレ
ートから成るポリエステルを、その吐出中心部に口金面
よりも下方に突出している針状物を有する吐出孔から溶
融吐出し、引続き吐出ポリマー流の表面温度よりも10
〜30℃低い温度に雰囲気温度を保持している保温ゾー
ン中を走行せしめ、次いで冷却固化せしめてから110
0〜6000m/分の引取速度で引取ることを特徴とす
るポリエステル繊維の製造法である。
(1) Δn≧0.03 (11 Δna≦0.03 (III Δna≦Δn−0,013) In addition, the second invention of the present invention provides a polyester whose main repeating unit is ethylene terephthalate, and a nozzle at the center of the discharge. The melt is discharged from a discharge hole having a needle-like object that protrudes below the surface, and the temperature of the discharged polymer stream is 10% higher than the surface temperature of the discharged polymer flow.
It was run through a heat retention zone where the ambient temperature was maintained at a temperature lower than ~30°C, and then cooled and solidified.
This is a method for producing polyester fibers, which is characterized by taking off at a take-off speed of 0 to 6000 m/min.

本発明を図面を用いて説明する。The present invention will be explained using the drawings.

第1図は本発明のポリエステル繊維及び従来のポリエス
テル繊維の夫々の複屈折率(Δn)及び非晶部配向度(
Δna )との関係を示すグラフである。
Figure 1 shows the birefringence (Δn) and amorphous orientation degree (Δn) of the polyester fiber of the present invention and conventional polyester fiber.
Δna ).

また、第2図はポリエステルの溶融紡糸設備の路線図な
示し、第3図は従来の紡糸口金の縦断面図及び第4図は
本発明で用いる紡糸口金の縦断両図を夫々示す。
Further, FIG. 2 shows a route diagram of polyester melt spinning equipment, FIG. 3 shows a longitudinal sectional view of a conventional spinneret, and FIG. 4 shows both longitudinal sectional views of a spinneret used in the present invention.

第1図において、斜線部は本発明のポリヱス゛ チル繊
維の複屈折率(Δn)及び非晶部配向度(Δna )の
範囲を示し、図中の各点は後述の表−1に示す延伸糸或
いは未延伸糸のΔn及びΔnaを夫々プpットしたもの
である。
In FIG. 1, the shaded area indicates the range of birefringence (Δn) and degree of amorphous orientation (Δna) of the polyester fiber of the present invention, and each point in the diagram indicates the range of the drawn yarn shown in Table 1 below. Alternatively, it is obtained by putting Δn and Δna of the undrawn yarn, respectively.

ここで、曲線A上にある7161〜7は第4図に示す本
発明で用いる紡糸口金を用い℃紡糸引取速度1000〜
5000m/分で得られる未延伸糸を示し、421〜2
4は前記未延伸糸中の7g61〜4に更に延伸熱セット
を施して得られる延伸糸を示す。
Here, 7161 to 7 on the curve A are obtained by using the spinneret used in the present invention shown in FIG.
Indicates undrawn yarn obtained at 5000 m/min, 421-2
4 shows a drawn yarn obtained by further subjecting 7g61 to 4 of the undrawn yarns to drawing heat setting.

また、曲線B上にあるAIO〜14は第3図に示す従来
の紡糸口金を用い紡糸引取速度2000〜5000m/
分で得られる未延伸糸を示し、/%28〜31は紡糸引
取速度1000〜2500m7分で得られる未延伸糸に
更に延伸熱セットを施1−て得られる延伸糸を示す7、 第1図から明らかな様に、本発明のポリエステル繊維は
、未延伸糸及び延伸糸におい℃も、従来の延伸糸は勿論
のこと、POY或いはUSYと比較【、てもΔnaが大
巾低いことが一つの特徴である。
In addition, AIO~14 on curve B uses a conventional spinneret shown in Fig. 3 at a spinning take-off speed of 2000~5000 m/
/%28 to 31 indicates the drawn yarn obtained by further subjecting the undrawn yarn obtained at a spinning take-off speed of 1000 to 2500 m7 minutes to a drawing heat setting. As is clear from the above, the polyester fiber of the present invention has significantly lower Δna in both undrawn and drawn yarns than conventional drawn yarns as well as POY or USY. It is a characteristic.

ここで、Δnが0.03未満の場合、かかるポリエステ
ル繊維は実用に供し得る力学的特性を有しておらず、高
倍率で延伸し熱セットすることを要し、得られる延伸糸
のΔnaは0.03を越えるため、良好な染色性を有す
ることができない。
Here, if Δn is less than 0.03, the polyester fiber does not have mechanical properties that can be put to practical use, and it is necessary to draw it at a high magnification and heat set it, and the Δna of the resulting drawn yarn is Since it exceeds 0.03, it is not possible to have good dyeability.

また、0.03以上のΔnを有し℃おり、高倍率の延伸
熱セットを施すことなく実用に供し得るポリエステル繊
維でも、Δnaが0.03を越える場合、又はΔna 
)Δn −0,013となる場合は、いずれも満足し得
る染色性を有することができない。
In addition, even if polyester fiber has a Δn of 0.03 or more at °C and can be put to practical use without being subjected to high-stretch heat setting, if the Δna exceeds 0.03 or the Δna
) In the case where Δn −0,013, it is impossible to have satisfactory dyeability.

本発明のポリエステル繊維におい℃、Δnが0.03〜
0.12で且つΔnaが0.01〜0.03(特に好ま
1−(は0.01〜0.02 )のものが好ましい。
In the polyester fiber of the present invention, °C and Δn are from 0.03 to
0.12 and Δna of 0.01 to 0.03 (particularly preferably 1-(0.01 to 0.02)).

Δnが0.12を越える場合は、Δn&を0.03以下
にフントロールすることが困難になる傾向があり、Δn
aが0.01未満となる場合は、低強度の繊維となる傾
向がある。
If Δn exceeds 0.12, it tends to be difficult to reduce Δn& to 0.03 or less, and Δn
When a is less than 0.01, the fiber tends to have low strength.

本発明のポリエステル繊維は、この様に従来130℃以
上の温度で自己伸長を示すものである。
As described above, the polyester fiber of the present invention exhibits self-elongation at a temperature of 130° C. or higher.

かかる自己伸長は下記に定義されるSFが正となる場合
である。
Such self-extension is when SF defined below is positive.

1、−1・ S E −−X  100 この様KSEが正になるポリエステル繊維は、130℃
以上の温度で自己伸長を示すため、仕上工程における熱
処理後に得られる織物の風合はソフトなものとすること
ができる。
1, -1・SE --X 100 Polyester fibers with a positive KSE like this are heated at 130℃
Since it exhibits self-elongation at the above temperature, the texture of the fabric obtained after heat treatment in the finishing process can be soft.

かかるSFが0又は負の場合は、どうしても仕上工程の
熱処理において織物を構成するポリエステル繊維が収縮
するため、ソフトな風合の織物を得ることが困難である
If the SF is 0 or negative, the polyester fibers constituting the fabric inevitably shrink during the heat treatment in the finishing process, making it difficult to obtain a fabric with a soft texture.

尚、本発明のポリエステル繊維の伸度は150チ以下の
ものが好ま1.り、更に延伸熱セット或いは延伸仮撚加
工を施す場合は150%以下、90%を越えるものが好
ましい。
The elongation of the polyester fiber of the present invention is preferably 150 inches or less. In addition, when further heat-set by stretching or false-twisting by stretching, it is preferably 150% or less and more than 90%.

以上、述べてきた本発明のポリエステル繊維を得る釦は
、第4図に示す紡糸口金を用いて溶融紡糸することが肝
要である。
It is important that the button for obtaining the polyester fiber of the present invention described above is melt-spun using the spinneret shown in FIG.

第4図は本発明で用いる紡糸口金の断面図であって、1
4は吐出孔、15はキャップ表面温度測定用孔、16は
針状物、2丁は吐出ポリマ一温度1sT は雰囲気温度
、及びMP  は吐出ポリマーを夫々示す。
FIG. 4 is a cross-sectional view of the spinneret used in the present invention, with 1
4 is a discharge hole, 15 is a cap surface temperature measurement hole, 16 is a needle-shaped object, 2 are the temperature of the discharged polymer, 1sT is the ambient temperature, and MP is the discharged polymer, respectively.

かかる第4図に示す紡糸口金を用いた本発明のポリエス
テル繊維の製造法について、第2図に示す溶融紡糸設備
の路線図を用いて説明する。
The method for producing polyester fibers of the present invention using the spinneret shown in FIG. 4 will be explained with reference to the route map of the melt spinning equipment shown in FIG. 2.

即ち、チップホッパー(101)から供給されたポリマ
ーはルーダ中で加熱溶融されてスクリュー(102)で
スp−ト(103)を通して押出される。次いで、ポリ
マー導管(105)を通り、ギヤポンプ(104)で計
量されたポリマーは、パック(107)でP遇された後
に紡糸口金(108)より吐出され、保温ゾーン(to
9)を通り冷却筒(tto)で冷却、固化されてからオ
イリングローラ(111)でオイルを付与された後、ゴ
デッ)c−−ラ(112)(112’)を経て捲取り機
(113)に捲取られる。
That is, the polymer supplied from the chip hopper (101) is heated and melted in the router and extruded through the spout (103) by the screw (102). Next, the polymer that passes through the polymer conduit (105) and is metered by the gear pump (104) is pumped in the pack (107) and then discharged from the spinneret (108) to the heat retention zone (to
9), is cooled and solidified in a cooling cylinder (tto), is applied with oil by an oiling roller (111), and then passed through a winding machine (113) through a roller (112) (112'). It is rolled up.

この際、本発明におい℃は、紡糸口金(108)として
第4図に示す紡糸口金を用いて、針状物(116)を有
する吐出孔(114)から溶融吐出したポリマー流(M
P)を、ポリマー流の表面温度(Pt )よりも雰囲気
温度(8丁 )を10〜30℃重く保持している保温ゾ
ーン中を走行せしめ、次いで冷却固化せしめてから11
00〜eooom/分の引取速度で引取ることが大切で
ある。
At this time, in the present invention, the polymer flow (M
P) was run through a heat retention zone in which the ambient temperature (8 tubes) was kept 10 to 30 degrees Celsius higher than the surface temperature (Pt) of the polymer stream, and then cooled and solidified.
It is important to take off at a take-up speed of 0.00 to eoooom/min.

この様に第4図に示す紡糸口金を採用することによって
、吐出孔(114)から吐出したポリマー流(Mp)は
針状物(116)上で冷却され易いため、第3図に示す
従来の紡糸口金を用いる場合に比較1.て、高粘度下で
洩糸できるのである。
By employing the spinneret shown in FIG. 4 in this manner, the polymer flow (Mp) discharged from the discharge hole (114) is easily cooled on the needle-like object (116), so that the spinneret shown in FIG. Comparison 1 when using a spinneret. Therefore, leakage threads can be formed under high viscosity.

ここで、保温ゾーン中の雰囲気温度(ST)をポリマー
流の表面温度(Pt)との差が30℃を越える様な低温
にすると、吐出ポリマー流(MP)の粘度が低下し、針
状物(116)直下での急激な細化変形に耐えられず脆
性破断を生じ易く、他方、10℃未満になる様に高温に
すると、針状物(116)上での冷却が不充分になるた
め忙断糸が生じ易い。
Here, if the atmospheric temperature (ST) in the heat retention zone is set to a low temperature such that the difference from the surface temperature (Pt) of the polymer flow exceeds 30°C, the viscosity of the discharged polymer flow (MP) decreases, causing needle-like particles to form. (116) cannot withstand rapid thinning deformation directly below it and tends to cause brittle fracture. On the other hand, if the temperature is raised to less than 10°C, cooling on the needle-like object (116) will be insufficient. Busy threads are likely to occur.

また、引取速度が1100m/分未満になると、得られ
るポリエステル繊維のΔnが0803未漕となり、60
00m/分を越えると、針状物(116)直下での変形
が急激となり断糸が増加し、更に糸掛は等の操作が困1
11になる。
Furthermore, when the take-up speed is less than 1100 m/min, the obtained polyester fiber has a Δn of 0803 and 60 m/min.
If the speed exceeds 00 m/min, the deformation immediately below the needle-like object (116) will be rapid, resulting in an increase in yarn breakage, and furthermore, operations such as threading will be difficult.
Becomes 11.

かかる本発明において用いる第4図に示す針状物(11
6)の長さは、得られる未延伸糸の使用目的に応じて適
宜決定すればよい。
The needle-like object (11) shown in FIG. 4 used in the present invention
The length of 6) may be appropriately determined depending on the purpose of use of the obtained undrawn yarn.

例えば、紡糸引取速度3000 m /分未満で伸度1
50%以下9096を越える未疑伸糸を得て、次いで延
伸熱セット或いは両件仮撚加工等を施す場合には、針状
物(116)の口金面からの突出長を約5■とすること
が好ましい。
For example, the elongation is 1 at a spinning take-off speed of less than 3000 m/min.
When obtaining unsuspected drawn yarn exceeding 50% or less of 9096 and then subjecting it to drawing heat setting or false twisting, the protrusion length of the needle-like object (116) from the mouth surface should be approximately 5 cm. It is preferable.

また、紡糸引取速度3000〜6000m/分(好まし
くは3000〜5000m/分)で伸度90チ以下のポ
リエステル繊維を得て、更に延伸熱セット等を施すこと
なく実用に供する場合には、針状物(1t6)の口金面
からの突出長を5〜lowm+とすることが好ましい。
In addition, when obtaining polyester fibers with an elongation of 90 inches or less at a spinning take-off speed of 3,000 to 6,000 m/min (preferably 3,000 to 5,000 m/min) and putting them into practical use without further heat-setting by drawing, needle-shaped It is preferable that the protruding length of the object (1t6) from the mouth surface is 5 to lowm+.

この様にして吐出せしめた吐出ポリマー流を走行させる
保温ゾーン(109)の長さは口金面から60m以下と
することが好ましく、保温ゾーン(109)の雰囲気温
度をコントロールするためにヒータ等を取り付けてもよ
い。
The length of the heat retention zone (109) in which the discharged polymer stream thus discharged travels is preferably 60 m or less from the nozzle surface, and a heater or the like is installed to control the ambient temperature of the heat retention zone (109). It's okay.

以上、説明してきた本発明の製造法によって得られるポ
リエステル繊維は、従来の第3図に示す紡糸口金を用い
て溶融紡糸L℃得られるポリエステル繊維と比較して、
繊[8本として高度罠配向されているものの非晶部配向
度が低く、X線で測定【−た結晶サイズが大きく、しか
も差動走査型熱量計(DSC)で測定1−た融点近傍の
熱吸収曲線もブーードなものである。
The polyester fiber obtained by the production method of the present invention described above has a lower temperature compared to the polyester fiber obtained by melt spinning at L°C using the conventional spinneret shown in FIG.
Although the fibers are highly trap oriented, the degree of orientation of the amorphous part is low, the crystal size measured by X-ray is large, and the melting point near the The heat absorption curve is also Boudot's.

このため、かかるポリエステル繊維は、結晶サイズに大
きな分布を有し、且つ非晶部の分子鎖の乱れが大きいも
のと推定される。
For this reason, it is presumed that such polyester fibers have a large distribution of crystal sizes and that the molecular chains in the amorphous portion are highly disordered.

尚、本発明で用いるポリエステルは、テレフタル酸成分
とエチレングリコール成分とからなるポリエチレンテレ
フタレートを主たる対象とするが、テレフタル酸成分の
一部(通常204ルチ以下)を他の二官能性カルボン酸
成分で置換えたポリエステルであっても、またエチレン
グリコール成分の一部(通常20モルチ以下)を他のジ
オール成分で置換えたポリエステルであってもよい。更
に、各種添加剤、例えば易染剤、離燃剤、制電剤、親水
剤、着色剤等を必要に応じ℃共重合又は混合したポリエ
ステルであってもよい。
The polyester used in the present invention is mainly polyethylene terephthalate consisting of a terephthalic acid component and an ethylene glycol component, but a part of the terephthalic acid component (usually 204 ruti or less) is replaced with another difunctional carboxylic acid component. It may be a substituted polyester, or a polyester in which a part of the ethylene glycol component (usually 20 molt. or less) is replaced with another diol component. Furthermore, the polyester may be copolymerized or mixed at °C with various additives such as a dye-facilitating agent, a flame release agent, an antistatic agent, a hydrophilic agent, a coloring agent, etc., if necessary.

(作用) 本発明のポリエステル繊維は、第4図に示す紡糸口金を
用いること罠よって初めて得られるものである。
(Function) The polyester fiber of the present invention can only be obtained by using the spinneret shown in FIG.

即ち、吐出されたポリマー流は、吐出孔中心部に下方に
吐出している針状物上で冷却され高粘度となるため、従
来の第3図に示す紡糸口金を用いろ溶融紡糸に比較して
高ドラフト紡糸となり、得られるポリエステル繊維は、
全率とし℃高度に配向されているものの非晶部配向度が
低く、1−かも130’Cの温度おいて自己伸長を出す
In other words, the discharged polymer flow is cooled on the needle-like object discharged downward into the center of the discharge hole and becomes highly viscous, so compared to conventional melt spinning using a spinneret shown in FIG. The resulting polyester fiber is
Although it is highly oriented in terms of total percentage, the degree of orientation in the amorphous portion is low, and self-extension occurs at temperatures as high as 1-130'C.

このため、かかるポリエステル繊維は、良好な染色性を
有し、しかも130’C以上の温度で熱処理を施されて
もソフトな風合の織物を得ることができる。
Therefore, such polyester fibers have good dyeability, and even when heat-treated at temperatures of 130'C or higher, fabrics with a soft texture can be obtained.

更に、溶融ポリマーを吐出する保温ゾーンの温度をコン
トロールすることKよっ℃、針状物上での冷却速度を調
整することができ、前記ポリエステル繊維を紡糸断糸な
く安定して紡糸できるのである。
Furthermore, by controlling the temperature of the heat-retaining zone from which the molten polymer is discharged, the cooling rate on the needle-shaped object can be adjusted, and the polyester fiber can be stably spun without yarn breakage.

(発明の効果) 本発明によれば、仕上工程における熱処理を施されても
ソフトな風合の織物を得ることがもき、その工業的意義
は大きい。
(Effects of the Invention) According to the present invention, it is possible to obtain a woven fabric with a soft texture even after heat treatment in the finishing process, which has great industrial significance.

(実施例) 以下、実施例を挙げて本発明を更に詳述する。(Example) Hereinafter, the present invention will be further explained in detail by giving Examples.

尚、実施例中の測定値は次の方法により測定(。In addition, the measured values in the examples were measured by the following method (.

たものである。It is something that

(1+  非晶部?J!屈折率(Δna )Δna =
 (Δn−0,22x)/(f−x)Δnは平均複屈折
率 Xは密度法より求めた結晶化度 x=(ρ−ρam ) / (ρC−ρam  )ρは
密度勾配管法で求められた測定サンプルの密度(f/c
ri) ρam =アモルファス部密度(1,335)ρC=結
晶部密度(1,455) (2)  沸水収縮率(BWS) 0.1 t / de荷宣下での試料長をり、と1−1
荷重を取り除き、沸水中で30分間処理した後、同じ荷
重下で測定した長さをLとした時、沸水収縮率(BWS
)は L・ (3)  風合 8Kを測定のための熱処理を施したメリヤス編地を風合
い(ソフト感)評価用の試料とした。風合い(ソフト感
)は触感によって評価した。
(1+ Amorphous part? J! Refractive index (Δna) Δna =
(Δn-0,22x)/(f-x) Δn is the average birefringence X is the crystallinity determined by the density method x = (ρ-ρam) / (ρC-ρam) ρ is determined by the density gradient tube method The density of the measured sample (f/c
ri) ρam = amorphous part density (1,335) ρC = crystalline part density (1,455) (2) Boiling water shrinkage (BWS) 0.1 t/de Sample length under load, and 1- 1
After removing the load and processing in boiling water for 30 minutes, when the length measured under the same load is L, the boiling water shrinkage rate (BWS)
) is L. (3) A stockinette knitted fabric subjected to heat treatment for measuring 8K texture was used as a sample for texture (soft feel) evaluation. Texture (soft feel) was evaluated by touch.

(4)  染料吸着率 染料Eastman Po1ysater Dark 
Red FL (イーストマンコダック社商品名) 5
.5 % o、w、fを分散剤Dispel TL (
明成化学工業社商品名)1f/11助剤硫安22/l、
ギ酸o、1t7tとともに分散した染液中に1/100
重量の繊維を浸漬し、30分で98℃まで昇温、そのま
ま60分染色して染色前後の液を分光光度計にて測定し
た値より求めた、 (5)  吐出ポリマー流の温度測定 サーモピュア(日本電子株式会社)を用い吐出ポリマー
流の径が1諺となる迄の温度を測定。
(4) Dye adsorption rate Dye Eastman Polysater Dark
Red FL (Eastman Kodak Company product name) 5
.. 5% o, w, f as dispersant Dispel TL (
Meisei Chemical Industry Co., Ltd. trade name) 1f/11 auxiliary ammonium sulfate 22/l,
Formic acid o, 1/100 in the dye liquor dispersed with 1t7t
(5) Measurement of temperature of discharged polymer flow Thermopure (JEOL Ltd.) to measure the temperature until the diameter of the discharged polymer flow becomes one inch.

(6)  雰囲気温度測定 熱電対を用い吐出ポリマー流表面から5mmの位置で測
定。
(6) Ambient temperature measurement using a thermocouple at a position 5 mm from the surface of the discharged polymer flow.

実施例1 第4図に示す紡糸口金に於て吐出孔(14)の径1.0
■、長さ2箇とし、針状物(116)の径0.7m++
  口金面からの突出長5mとし、固有粘度印が0.6
4 、融点255℃のポリエチレンテレフタレートを溶
融温度295℃で溶融吐出し、引続き長さ50mの保温
ゾーン(109)を走行せしめ、表−IK示す引取速度
で75デニール/ 36 filのポリニス繊維を引取
った。この際の保温ゾーン(109)の雰囲気温度は吐
出ポリマー流の表面温度よりも15〜20℃低(なる様
に調整した。
Example 1 In the spinneret shown in FIG. 4, the diameter of the discharge hole (14) was 1.0.
■, 2 lengths, diameter of needle (116) 0.7m++
The protrusion length from the mouth surface is 5m, and the intrinsic viscosity mark is 0.6.
4. Polyethylene terephthalate with a melting point of 255°C was melted and discharged at a melting temperature of 295°C, and then the material was run through a heat retention zone (109) with a length of 50 m, and polyvarnish fibers of 75 denier/36 fil were collected at the collection speed shown in Table IK. Ta. At this time, the ambient temperature of the heat retention zone (109) was adjusted to be 15 to 20° C. lower than the surface temperature of the discharged polymer flow.

また、通常の紡糸口金(吐出孔径0.3m、長さ0.6
m)を用いる池は、前記紡糸方法と同様にして75デニ
ール/ 36 filのポリエステル繊維を引取った。
In addition, a normal spinneret (discharge hole diameter 0.3 m, length 0.6
A 75 denier/36 fil polyester fiber was taken from the same spinning method as described above.

得られた未延伸糸の物性(強度、伸度、Δn。Physical properties of the obtained undrawn yarn (strength, elongation, Δn.

Δna *  BWS  r  S E )を表−IK
併記した。
Δna * BWS r SE ) as table-IK
Also listed.

ここで、/161〜7のものは第4図に示す1紡糸口金
を用い、7168〜14のものは第3図に示す従来の紡
糸口金を用いたものである。
Here, the spinnerets /161 to 7 use one spinneret shown in FIG. 4, and the spinnerets 7168 to 14 use the conventional spinneret shown in FIG. 3.

更に、紡糸引取速度が1ooo 〜250OFF$/分
(謄−1において、/VL1〜4及び腐8〜11)のも
のは伸度が高いため、更に延伸熱セットを施した。この
際の延伸倍率は表−1に示す通りであり、予熱温度85
℃であり、セット温度は180℃であった。
Further, since the elongation of the yarns with a spinning take-off speed of 100 to 250 OFF $/min (/VL 1 to 4 and VL 8 to 11 in Yen-1) was high, they were further subjected to stretching heat setting. The stretching ratio at this time is as shown in Table 1, and the preheating temperature is 85
℃, and the set temperature was 180℃.

この様にして得られた未延伸糸及び延伸糸の染料吸着率
及び風合を調査1.、その結果も表−1に併記した。
The dye adsorption rate and texture of the undrawn yarn and drawn yarn thus obtained were investigated.1. The results are also listed in Table-1.

表−1から明らかな様に、第4図に示す紡糸口金を用い
、保温ゾーン中の雰囲気温度、及び紡糸引取速度を本発
明で規定する範囲のものは。
As is clear from Table 1, the spinneret shown in FIG. 4 was used, and the atmospheric temperature in the heat retention zone and the spinning take-off speed were within the range specified in the present invention.

良好な染色性を有し、且つ130℃の温度で自己伸長を
示す。
It has good dyeability and exhibits self-extension at a temperature of 130°C.

実施例2 第4図に示す紡糸口金に於て、吐出孔(114)の径及
び長さを夫々1.0m、2mとし、針状物の径0.7+
w+針状物の口金面からの突出長(針状物憂)を表−2
の如く変更し、固有粘度口0.64.融点255℃のポ
リエチレンテレフタレートを口金面温度が275℃とな
るよう溶融温度を変更【5、更に表−2に示す如く保温
ゾーン(109)の長さ、保温ゾーンの雰囲気温度、及
び結糸速度を変更して75デニール/ 36 filの
ポリエステル繊維を紡糸した。この結果を表−2に併せ
て示す。尚、冷却風条件は実施例1と同じとした。
Example 2 In the spinneret shown in FIG. 4, the diameter and length of the discharge hole (114) were 1.0 m and 2 m, respectively, and the diameter of the needle-like material was 0.7 +
w + protruding length of the needle-like object from the mouthpiece surface (needle-like listlessness) Table-2
Change the intrinsic viscosity to 0.64. The melting temperature of polyethylene terephthalate with a melting point of 255°C was changed so that the mouth surface temperature was 275°C. A modified 75 denier/36 fil polyester fiber was spun. The results are also shown in Table-2. Note that the cooling air conditions were the same as in Example 1.

415〜18は針状物の口金面からの突出長さく針状物
憂)を変更した場合の例であり、針状物憂が長くなると
吐出ポリマー流温度が低下し粘度が高くなる為に紡糸調
子が悪(なる。
415 to 18 are examples in which the protrusion length of the needle from the mouth surface is changed (needle length), and as the needle length becomes longer, the temperature of the discharged polymer flow decreases and the viscosity increases, so the spinning condition changes. Evil (Naru)

71619〜22は紡糸引取速度を変更した場合の例で
あり、紡糸引取速度が6000m/分くなると、単繊維
切れが時々発生するも許容範囲内であった。
71619-22 are examples in which the spinning take-off speed was changed, and when the spinning take-off speed was 6000 m/min, single fiber breakage occasionally occurred, but it was within an acceptable range.

423〜26は保温ゾーン長を変更した場合の例であり
、腐23では雰囲気温度が低(なり過ぎ、吐出ポリマー
流の粘度が高(なり、細化変形しにくくなる為に断糸が
多発し、又、腐26では糸冷却が進まない為、吐出ポリ
マー流の自重により落下断糸が発生する。
423 to 26 are examples when the heat retention zone length is changed, and in 23, the ambient temperature is too low (too low) and the viscosity of the discharged polymer flow is high (so that it becomes difficult to thin and deform, resulting in frequent yarn breakage). In addition, since yarn cooling does not proceed in the rot 26, yarn breakage occurs due to the weight of the discharged polymer flow.

ここで、A22の紡糸引取速度6000 m 7分で得
られたポリエステル繊維の物性は次の唾なものであった
Here, the physical properties of the polyester fiber obtained at A22 spinning speed of 6000 m for 7 minutes were as follows.

強  度      2.1  f / de伸  度
      30 チ Δn   O,075 Δna           −0,012BWS  
 7チ S E   3.5チ 染料吸着率 90チ 風  合     ○(良好) 比較例1 実施例1の/%13において、溶融紡糸で得′られた未
延伸糸を、−担巻き取ることな(引続き非加熱状態で倍
率1.38倍で延伸した。
Strength 2.1 f/de Elongation 30 Chi Δn O,075 Δna −0,012BWS
7cm S E 3.5cm Dye adsorption rate 90cm Wind ○ (Good) Comparative example 1 In /%13 of Example 1, the undrawn yarn obtained by melt spinning was Subsequently, the film was stretched at a magnification of 1.38 times without heating.

得られた延伸糸の物性は次の様なものである。The physical properties of the drawn yarn obtained are as follows.

強  度      3.8  f / de伸  度
      27% Δn”  0.13 Δna   0.038 BW8  4.4 % 染料吸着率 68チ S E     3.1% 風 合   ×(粗硬)
Strength 3.8 f/de elongation 27% Δn” 0.13 Δna 0.038 BW8 4.4% Dye adsorption rate 68cm SE 3.1% Texture × (rough hardness)

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

第1図は本発明のポリエステル繊維及び従来のポリエス
テル繊維の夫々の複屈折率(Δn)及び非晶部配向度(
Δna )との関係を示すグラフである。 面図な夫々示す。 図中において、 108;紡糸口金  114;吐出孔 116:針状物  MP;吐出ポリマー流Sτ ;雰囲
気温度  PT;吐出ポリマー流の表面温度
Figure 1 shows the birefringence (Δn) and amorphous orientation degree (Δn) of the polyester fiber of the present invention and conventional polyester fiber.
Δna ). A top view is shown. In the figure, 108; spinneret 114; discharge hole 116: needle MP; discharged polymer flow Sτ; atmospheric temperature PT; surface temperature of discharged polymer flow

Claims (7)

【特許請求の範囲】[Claims] (1)主たる繰り返し単位がエチレンテレフタレートか
ら成るポリエステル繊維であつて、その複屈折率(Δn
)及び非晶部配向度(Δna)が下記(i)〜(iii
)式を同時に満足し、且つ下記(iv)式で定義される
SEが正であることを特徴とするポリエステル繊維。 (i)Δn≧0.03 (ii)Δna≦0.03 (iii)Δna≦Δn−0.013 (iv)SE=(l_1−l_0)/l_1×100〔
l_0;一定間隔に目印をつけたポリエステル繊維をメ
リヤス編地としてから100℃の沸騰水中で60分間熱
処理し、次いで得られた100℃熱処理メリヤス編地の
一部を解いて0.1g/deの荷重下で測定した前記目
印間の長さ。 l_1;更に前記熱処理メリヤス編地を高圧下130℃
の熱水中で60分間熱処理し、次いで得られた130℃
熱処理メリヤス編地の一部を解いて0.1g/deの荷
重下で測定した目印間の長さ。〕
(1) A polyester fiber whose main repeating unit is ethylene terephthalate, and its birefringence (Δn
) and the degree of orientation of the amorphous part (Δna) are as follows (i) to (iii)
) A polyester fiber characterized by simultaneously satisfying the following formulas and having a positive SE defined by the following formula (iv). (i) Δn≧0.03 (ii) Δna≦0.03 (iii) Δna≦Δn-0.013 (iv) SE=(l_1-l_0)/l_1×100 [
l_0: A knitted fabric made of polyester fibers marked at regular intervals was heat-treated in boiling water at 100°C for 60 minutes, and then a part of the resulting 100°C heat-treated knitted fabric was unraveled to give a knitted fabric of 0.1 g/de. Length between said landmarks measured under load. l_1; Furthermore, the heat-treated stockinette fabric was heated at 130°C under high pressure.
heat treatment in hot water for 60 minutes, then the resulting 130°C
The length between the marks was measured under a load of 0.1 g/de after unraveling a part of the heat-treated knitted stockinette fabric. ]
(2)複屈折率(Δn)が0.12以下である特許請求
の範囲第(1)項記載のポリエステル繊維。
(2) The polyester fiber according to claim (1), which has a birefringence index (Δn) of 0.12 or less.
(3)非晶部配向度(Δna)が0.01以上である特
許請求の範囲第(1)項記載のポリエステル繊維。
(3) The polyester fiber according to claim (1), which has an amorphous part orientation degree (Δna) of 0.01 or more.
(4)ポリエステル繊維の伸度が150%以下である特
許請求の範囲第(1)項記載のポリエステル繊維。
(4) The polyester fiber according to claim (1), wherein the elongation of the polyester fiber is 150% or less.
(5)主たる繰り返し単位がエチレンテレフタレートか
ら成るポリエステルを、その吐出中心部に口金面よりも
下方に突出している針状物を有する吐出孔から溶融・吐
出し、引続き吐出ポリマー流の表面温度よりも10〜3
0℃低い温度に雰囲気温度を保持している保温ゾーン中
を走行せしめ、次いで冷却固化せしめてから1000〜
6000m/分の引取速度で引取ることを特徴とするポ
リエステル繊維の製造法。
(5) Polyester whose main repeating unit is ethylene terephthalate is melted and discharged from a discharge hole that has a needle-like object in the center of the discharge that protrudes below the mouth surface, and then the surface temperature of the discharged polymer stream is lowered. 10-3
It was run through a heat-retaining zone where the ambient temperature was kept at a temperature lower than 0°C, and then cooled and solidified.
A method for producing polyester fibers, characterized in that the fibers are drawn at a drawing speed of 6000 m/min.
(6)口金面から突出している針状物の長さが5〜10
mmである特許請求の範囲第(5)項記載のポリエステ
ル繊維の製造法。
(6) The length of the needle-like object protruding from the cap surface is 5 to 10
The method for producing a polyester fiber according to claim (5), wherein the polyester fiber has a diameter of 1 mm.
(7)保温ゾーンの長さが口金面から高々60mmであ
る特許請求の範囲第(5)項記載のポリエステル繊維の
製造法。
(7) The method for producing polyester fibers according to claim (5), wherein the length of the heat retention zone is at most 60 mm from the mouth surface.
JP60247969A 1985-11-07 1985-11-07 Polyester fiber and production thereof Granted JPS62110911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60247969A JPS62110911A (en) 1985-11-07 1985-11-07 Polyester fiber and production thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60247969A JPS62110911A (en) 1985-11-07 1985-11-07 Polyester fiber and production thereof

Publications (2)

Publication Number Publication Date
JPS62110911A true JPS62110911A (en) 1987-05-22
JPH0377286B2 JPH0377286B2 (en) 1991-12-10

Family

ID=17171245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60247969A Granted JPS62110911A (en) 1985-11-07 1985-11-07 Polyester fiber and production thereof

Country Status (1)

Country Link
JP (1) JPS62110911A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4817213A (en) * 1971-06-29 1973-03-05
JPS491254A (en) * 1972-04-14 1974-01-08
JPS5352722A (en) * 1976-10-26 1978-05-13 Teijin Ltd Polyester fibers
JPS54142315A (en) * 1978-04-24 1979-11-06 Teijin Ltd Amorphous polyester multifilament yarns
JPS5756337A (en) * 1980-07-28 1982-04-03 Nat Res Dev Fiber manufacture and apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4817213A (en) * 1971-06-29 1973-03-05
JPS491254A (en) * 1972-04-14 1974-01-08
JPS5352722A (en) * 1976-10-26 1978-05-13 Teijin Ltd Polyester fibers
JPS54142315A (en) * 1978-04-24 1979-11-06 Teijin Ltd Amorphous polyester multifilament yarns
JPS5756337A (en) * 1980-07-28 1982-04-03 Nat Res Dev Fiber manufacture and apparatus

Also Published As

Publication number Publication date
JPH0377286B2 (en) 1991-12-10

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