JPH0778295B2 - Polyester sewing thread - Google Patents
Polyester sewing threadInfo
- Publication number
- JPH0778295B2 JPH0778295B2 JP26210589A JP26210589A JPH0778295B2 JP H0778295 B2 JPH0778295 B2 JP H0778295B2 JP 26210589 A JP26210589 A JP 26210589A JP 26210589 A JP26210589 A JP 26210589A JP H0778295 B2 JPH0778295 B2 JP H0778295B2
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- sewing thread
- dyeing
- oligomers
- treated
- 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.)
- Expired - Fee Related
Links
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は改良されたポリエステルミシン糸に関する。さ
らに詳しくは、染色時のオリゴマー発生量が極めて低減
されたポリエステルミシン糸に関するものである。Description: FIELD OF THE INVENTION The present invention relates to improved polyester sewing threads. More specifically, it relates to a polyester sewing thread in which the amount of oligomers generated during dyeing is extremely reduced.
（従来技術） ポリエステルフィラメント糸条からなるミシン糸は多く
の優れた特性を有するため、多方面の用途に使用されて
おり更に拡大されつつある。(Prior Art) Since a sewing thread made of a polyester filament thread has many excellent properties, it is used in various fields and is being further expanded.
このミシン糸を工業的に製造する工程において染色時の
オリゴマー発生が問題にされ、従来より低減する方法が
種々検討されてきた。一般的にオリゴマーを低減する方
法として、繊維の固相重合によってオリゴマーを減少さ
せる方法が開示されているが、十分ではなかった。In the process of industrially producing this sewing thread, the generation of oligomers during dyeing has become a problem, and various methods for reducing oligomer generation have been studied. Generally, a method of reducing oligomers by solid-phase polymerization of fibers has been disclosed as a method of reducing oligomers, but it has not been sufficient.
また、各種溶剤により除去する方法は繊維の物性を低下
させる結果となり高速可縫性を要求されるミシン糸への
採用は好ましくない。In addition, the method of removing with various solvents results in deterioration of the physical properties of the fiber and is not preferable for use in a sewing thread that requires high-speed sewing.
染色工程での改良も検討され、オリゴマーの水に対する
溶解度は温度上昇とともに増すことから染色が終了した
時点で高温のまま染色液を排出する方法が採用されたが
設備コストがかかるという欠点を有する。Improvements in the dyeing process have also been studied, and the solubility of the oligomer in water increases as the temperature rises. Therefore, a method in which the dyeing solution is discharged at a high temperature at the end of dyeing has been adopted, but it has the drawback of high equipment cost.
また、オリゴマー分散性のよい染料分散剤を使用する方
法も採用されているが、染料分散性がアップするために
染着性が低下し、染色コストがかかるという問題点を有
する。Further, a method of using a dye dispersant having a good oligomer dispersibility is also adopted, but there is a problem that dyeing property is lowered due to an increase in dye dispersibility and dyeing cost is increased.
（発明の目的） 本発明の目的は、かかる従来技術の問題点を解消し、染
色時のオリゴマー発生量が低減し、詰め込み染色が容易
にできるポリエステルミシン糸を提供することにある。(Object of the Invention) An object of the present invention is to solve the problems of the prior art, to reduce the amount of oligomers generated at the time of dyeing, and to provide a polyester sewing thread capable of facilitating stuffing dyeing.
（発明の構成） 本発明者らは、前記目的を達成するため鋭意検討した結
果、特定の繊維特性を有するポリエステル繊維を温水処
理することにより染色時のオリゴマー発生量が極めて低
減することを知り本発明に到達した。(Structure of the Invention) As a result of intensive studies to achieve the above-mentioned object, the present inventors have found that the amount of oligomers generated during dyeing is extremely reduced by treating a polyester fiber having specific fiber characteristics with hot water. The invention was reached.
すなわち、本発明によれば、エチレンテレフタレートを
主たる繰り返し単位とするポリエステルを2000m/分以上
の紡速で溶融紡糸し、次いで延伸熱処理して下記（ｉ）
〜（iv）を同時に満足するマルチフィラメントを得、し
かる後に撚糸し、80℃以上の温水で処理した未染色のポ
リエステルミシン糸であって、該ミシン糸の減量率
（Ｌ）が下記（ｖ）を満足することを特徴とするポリエ
ステルミシン糸が提供される。That is, according to the present invention, a polyester containing ethylene terephthalate as a main repeating unit is melt-spun at a spinning speed of 2000 m / min or more, and then stretch heat treated to give the following (i)
To (iv) at the same time to obtain a multifilament, which is then twisted and then treated with warm water of 80 ° C. or more, which is an undyed polyester sewing machine thread, and the weight loss rate (L) of the sewing machine thread is as follows (v). There is provided a polyester sewing machine thread characterized by satisfying:
（ｉ）0.75≦［η］f （ii）0.16≦Δｎ≦0.19 （iii）6.0≦ST≦8.0 （iv）1.5≦SH≦6.0 （ｖ）Ｌ≦1.5 以下本発明を更に詳細に説明する。(I) 0.75 ≤ [η] f (ii) 0.16 ≤ Δn ≤ 0.19 (iii) 6.0 ≤ ST ≤ 8.0 (iv) 1.5 ≤ SH ≤ 6.0 (v) L ≤ 1.5 The present invention will be described in more detail below.
本発明において用いるポリエステルは、ポリエチレンテ
レフタレートを主たる対象とするが、全繰り返し単位に
対して５モル％以下、好ましくは３モル％以下の他の成
分が共重合されていてもよい。かかる他の成分として
は、イソフタル酸成分、フタル酸成分、ｐ−ヒドロキシ
安息香酸成分、安息香酸成分、4,4′−ジフェニルジカ
ルボン酸成分、ナフタレンジカルボン酸成分、ジエチレ
ングリコール成分、テトラメチレングリコール成分等を
あげることができる。The polyester used in the present invention is mainly made of polyethylene terephthalate, but 5 mol% or less, preferably 3 mol% or less of other components may be copolymerized with respect to all repeating units. Examples of such other components include an isophthalic acid component, a phthalic acid component, a p-hydroxybenzoic acid component, a benzoic acid component, a 4,4'-diphenyldicarboxylic acid component, a naphthalene dicarboxylic acid component, a diethylene glycol component, a tetramethylene glycol component and the like. I can give you.
まだポリエステル中には艶消剤、着色剤、制電剤、改質
剤等を含有していてもよい。The polyester may still contain matting agents, colorants, antistatic agents, modifiers and the like.
かかるポリエステルよりなる本発明のマルチフィラメン
トは、35℃のオルソクロロフェノール溶液にして求めた
固有粘度が好ましくは0.80以上のポリマー、特に好まし
くは0.90以上1.30以下のポリマーを溶融紡糸し、マルチ
フィラメントの固有粘度［η］fを［η］f≧0.75とする
ことが必要である。この条件を満足しない場合は、本発
明の目的とするオリゴマーの低減が達成できないだけで
なく、ミシン糸としての十分な強力を得ることも困難と
なる。The multifilament of the present invention consisting of such a polyester has an intrinsic viscosity determined as an orthochlorophenol solution at 35 ° C., preferably a polymer having a viscosity of 0.80 or more, particularly preferably a polymer having a viscosity of 0.90 or more and 1.30 or less, is melt-spun, and has an intrinsic multifilament. It is necessary that the viscosity [η] f be [η] f ≧ 0.75. If this condition is not satisfied, not only the reduction of the oligomer, which is the object of the present invention, cannot be achieved, but also it becomes difficult to obtain sufficient strength as a sewing thread.
また、本発明のマルチフィラメントの配向度Δｎは、80
℃以上の温水で処理する際にオリゴマーが抽出され易い
条件として0.19≧Δｎとする必要があり、一方、ミシン
糸としての強力を維持するためにはΔｎ≧0.16が必要で
ある。The orientation degree Δn of the multifilament of the present invention is 80
It is necessary to satisfy the condition of 0.19 ≧ Δn as a condition that the oligomer is easily extracted when treated with warm water of ≧ ° C., while Δn ≧ 0.16 is required to maintain the strength as the sewing thread.
さらに、80℃以上の温水で処理する際オリゴマー抽出さ
れ易く、かつミシン糸の性能を維持する条件として破断
強度は6.0〜8.0g/dとすることが必要である。Furthermore, when treated with hot water of 80 ° C. or higher, the oligomers are likely to be extracted, and the breaking strength must be 6.0 to 8.0 g / d as a condition for maintaining the performance of the sewing thread.
また150℃の乾熱収縮率は、加工工程における寸法安定
性の点から6.0％以下が必要であるが、あまりに低収縮
化すると、結晶構造が極めてtightとなって80℃以上の
温水処理ではオリゴマー抽出が不十分となり、染色時に
オリゴマーの発生を増大させることとなるので、1.5％
以下にすることは好ましくない。Also, the dry heat shrinkage at 150 ° C needs to be 6.0% or less from the viewpoint of dimensional stability in the processing process, but if the shrinkage is too low, the crystal structure becomes extremely tight and the oligomer will be treated with hot water at 80 ° C or higher. 1.5% as the extraction will be insufficient and the generation of oligomers will increase during dyeing.
The following is not preferable.
なお、かかる特性を有するポリエステルマルチフィラメ
ントは、紡速2000m/分以上で引き取られた高配向未延伸
糸を延伸熱処理したものである必要がある。通常の紡糸
速度で引き取られた低配向未延伸糸を延伸熱処理したも
のであっては、たとえ上述の特性を有するものであって
も、ミシン糸としての高速可縫性が不十分なものとな
り、かつまた80℃以上の温水処理で効率よくオリゴマー
を抽出し難くなって、染色時のオリゴマー発生量を十分
低減することができないので好ましくない。The polyester multifilament having such characteristics needs to be drawn and heat-treated with highly oriented undrawn yarn taken at a spinning speed of 2000 m / min or more. When the low orientation undrawn yarn drawn at a normal spinning speed is drawn and heat treated, even if it has the above-mentioned characteristics, the high speed sewing property as a sewing thread becomes insufficient, Moreover, it is not preferable because it is difficult to efficiently extract the oligomer by hot water treatment at 80 ° C. or more, and the amount of oligomer generated during dyeing cannot be sufficiently reduced.
本発明のミシン糸は、かかるポリエステルマルチフィラ
メントを撚糸した後、80℃以上の温水で処理することに
よって得られる。処理温度が80℃未満の場合には、染色
時のオリゴマーの発生が増大するため好ましくない。The sewing thread of the present invention is obtained by twisting such a polyester multifilament and then treating it with warm water of 80 ° C or higher. If the treatment temperature is lower than 80 ° C., the generation of oligomers during dyeing increases, which is not preferable.
本発明のかかる温水処理を施したポリエステルミシン糸
は後で述べるキシレン処理をした際の減量率Ｌが1.5重
量％以下でなければならない。Ｌが1.5重量％を越える
場合には染色時のオリゴマー発生量が多くなり、染色後
にオリゴマー除去の為の洗浄が必要となり好ましくな
い。The polyester sewing machine thread treated with hot water according to the present invention must have a weight loss rate L of 1.5% by weight or less when treated with xylene which will be described later. When L exceeds 1.5% by weight, the amount of oligomers generated during dyeing increases, and washing for removing oligomers is required after dyeing, which is not preferable.
以上に説明した本発明のポリエステルミシン糸は、例え
ば以下の如き方法によって得られる。The polyester sewing thread of the present invention described above can be obtained, for example, by the following method.
即ち、固有粘度が0.80以上、好ましくは0.90〜1.30のポ
リエステルを溶融状態で冷却域内に紡出して直ちに冷却
固化せしめ、次いで油剤を付与後引取速度2000m/分以上
で引取ることによって複屈折率が2500〜5000×10-5の高
配向未延伸糸を得、この未延伸糸を1.5倍以上3.5倍以下
の延伸倍率で延伸し、しかる後に定長もしくは10％以下
の弛緩倍率で160〜250℃の熱処理を加えることによって
ミシン糸用のポリエステルマルチフィラメントが製造さ
れる。この延伸は紡糸に続いて連続して行っても、紡糸
後一旦捲取ってから延伸してもよい。That is, the intrinsic viscosity is 0.80 or more, preferably 0.90 to 1.30 polyester in the molten state is spun into the cooling zone and immediately solidified by cooling, and then the birefringence is obtained by taking over at a take-up speed of 2000 m / min or more after applying the oil agent. A highly oriented undrawn yarn of 2500 to 5000 × 10 −5 is obtained, and the undrawn yarn is drawn at a draw ratio of 1.5 times to 3.5 times, and then 160 to 250 ° C. at a fixed length or a relaxation ratio of 10% or less. A polyester multifilament for sewing threads is manufactured by applying the heat treatment of. This stretching may be performed continuously after spinning, or may be once wound after spinning and then stretched.
延伸にあたっての加熱温度は、85℃未満で行なうことが
望ましい。The heating temperature for stretching is preferably less than 85 ° C.
次いで、該ポリエステルマルチフィラメントを、公知の
方法等によって撚糸した後、80℃以上、好ましくは90〜
130℃の温水で、浴比1:10以上、好ましくは温水を常時
給排水している浴中で10分以上の処理を行なう。上記の
温度、浴比、時間が上記下限未満だと、キシレン処理に
よる減量率Ｌが1.5重量％を越えるのでよくない。Next, after twisting the polyester multifilament by a known method or the like, 80 ° C or higher, preferably 90 to
The treatment is carried out with hot water of 130 ° C. for a bath ratio of 1:10 or more, preferably 10 minutes or more in a bath in which hot water is constantly supplied and drained. If the above temperature, bath ratio, and time are less than the above lower limits, the weight loss rate L due to xylene treatment exceeds 1.5% by weight, which is not preferable.
本発明でいうキシレン処理による減量率Ｌは以下の方法
により測定する。The weight loss rate L due to the xylene treatment in the present invention is measured by the following method.
即ち、試料を150℃で乾燥し測定した重量をW1ｇとし、
次いで沸騰したキシレン中に浸漬して18時間処理後150
℃で乾燥し測定した重量をW2ｇとして Ｌ＝(W1−W2)／W1×100（％） で算出する。That is, the sample was dried at 150 ° C., the measured weight was W 1 g,
Then, soak in boiling xylene for 18 hours and then 150
It is calculated by L = (W 1 −W 2 ) / W 1 × 100 (%), where W 2 g is the weight measured by drying at ℃.
（発明の効果） 本発明によれば、温水処理時にオリゴマーが抽出される
ために、染色工程においてはオリゴマー発生量を低減さ
せることができ、染色後の洗浄によるコストアップを抑
制し、かつミシン糸としての物性を損なうことなく製造
することができる。(Effect of the invention) According to the present invention, since oligomers are extracted during hot water treatment, the amount of oligomers generated in the dyeing step can be reduced, and the cost increase due to washing after dyeing can be suppressed, and the sewing thread Can be manufactured without impairing the physical properties of
（実施例） 以下実施例をあげて本発明を更に説明する。(Examples) The present invention will be further described with reference to examples.
実施例１〜２、比較例１〜６ ポリエステル重合体を約300℃で溶融し、孔径0.30mm、
孔数24個を有する紡糸口金より吐出後330℃に加熱した
加熱筒を通し、更に25℃の冷却風を4.0Nm3/min吹きつけ
ながら冷却固化させ、その後オイリングローラーで油剤
を付与して捲取る。得られた未延伸糸を延伸熱処理して
70デニール24フィラメントのポリエステル糸条を得た。Examples 1-2, Comparative Examples 1-6 A polyester polymer was melted at about 300 ° C. and a pore size of 0.30 mm,
After discharging from a spinneret with 24 holes, it is passed through a heating cylinder heated to 330 ° C and further cooled and solidified by blowing cooling air of 25 ° C at 4.0 Nm 3 / min, and then oiled with an oiling roller to wind it. take. The resulting undrawn yarn is drawn and heat treated.
A polyester yarn of 70 denier 24 filament was obtained.
更に、得られたポリエステル糸条に下撚後３本合糸をし
て上撚をかけミシン糸（＃50）とした後、チーズ染色機
で100℃の温水中20分間処理し、水洗後130℃で染色して
オリゴマーの発生量の比較を行なった。Further, after twisting the obtained polyester yarns three times and twisting them to obtain a twisted yarn (# 50), a cheese dyeing machine treats them with warm water at 100 ° C for 20 minutes, and after washing with water, 130 The amount of oligomer generated was compared by dyeing at ° C.
なお、この際、ポリマー固有粘度、紡糸速度、延伸倍
率、熱処理温度条件を表−１の如く変更した。At this time, the polymer intrinsic viscosity, spinning speed, draw ratio, and heat treatment temperature conditions were changed as shown in Table 1.
得られたポリエステル糸条の物性（破断強度、Δｎ、15
0℃乾熱収縮率）及びキシレン処理による減量率
（Ｌ）、染色時のオリゴマー発生量の結果は表−１に併
せて示した。Physical properties of the obtained polyester yarn (breaking strength, Δn, 15
The results of the dry heat shrinkage ratio at 0 ° C.), the weight loss ratio (L) due to the xylene treatment, and the oligomer generation amount at the time of dyeing are also shown in Table 1.
表−１から明らかなように本発明の範囲内にある実施例
１〜２のミシン糸は、染色時のオリゴマー発生量の少な
い高品質のものであった。As is clear from Table-1, the sewing threads of Examples 1 and 2 which are within the scope of the present invention were of high quality with a small amount of oligomers generated during dyeing.
Claims (1)
単位とするポリエステルを2000m/分以上の紡速で溶融紡
糸し、次いで延伸熱処理して下記（ｉ）〜（iv）を同時
に満足するマルチフィラメントを得、しかる後に撚糸
し、80℃以上の温水で処理した未染色のポリエステルミ
シン糸であって、該ミシン糸の減量率（Ｌ）が下記
（ｖ）を満足することを特徴とするポリエステルミシン
糸。 （ｉ）0.75≦［η］f （ii）0.16≦Δｎ≦0.19 （iii）6.0≦ST≦8.0 （iv）1.5≦SH≦6.0 （ｖ）Ｌ≦1.5 A polyester containing ethylene terephthalate as a main repeating unit is melt-spun at a spinning speed of 2000 m / min or more, and then stretch-heat treated to obtain a multifilament simultaneously satisfying the following (i) to (iv). An undyed polyester sewing thread that is subsequently twisted and treated with warm water of 80 ° C. or more, wherein the weight reduction rate (L) of the sewing thread satisfies the following (v). (I) 0.75 ≤ [η] f (ii) 0.16 ≤ Δn ≤ 0.19 (iii) 6.0 ≤ ST ≤ 8.0 (iv) 1.5 ≤ SH ≤ 6.0 (v) L ≤ 1.5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26210589A JPH0778295B2 (en) | 1989-10-09 | 1989-10-09 | Polyester sewing thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26210589A JPH0778295B2 (en) | 1989-10-09 | 1989-10-09 | Polyester sewing thread |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03124876A JPH03124876A (en) | 1991-05-28 |
| JPH0778295B2 true JPH0778295B2 (en) | 1995-08-23 |
Family
ID=17371107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26210589A Expired - Fee Related JPH0778295B2 (en) | 1989-10-09 | 1989-10-09 | Polyester sewing thread |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0778295B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2901806B2 (en) * | 1992-05-11 | 1999-06-07 | 帝人株式会社 | Composite sewing thread |
| JP5662643B2 (en) * | 2009-01-22 | 2015-02-04 | 旭化成せんい株式会社 | Abrasion resistant polyester fiber and method for producing the same |
| US20130130008A1 (en) * | 2010-07-29 | 2013-05-23 | Junko Deguchi | Abrasion resistant polyester fiber and woven/knitted product |
-
1989
- 1989-10-09 JP JP26210589A patent/JPH0778295B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03124876A (en) | 1991-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |