JP2003055853A - Filament thread for machine sewing - Google Patents
Filament thread for machine sewingInfo
- Publication number
- JP2003055853A JP2003055853A JP2001246979A JP2001246979A JP2003055853A JP 2003055853 A JP2003055853 A JP 2003055853A JP 2001246979 A JP2001246979 A JP 2001246979A JP 2001246979 A JP2001246979 A JP 2001246979A JP 2003055853 A JP2003055853 A JP 2003055853A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- sewing
- filament
- thread
- intrinsic viscosity
- 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
Links
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、フイラメントの光
沢を残しつつ均一な縫目を形成することが可能で、且つ
高速縫製性の良好なフイラメントミシン糸に関するもの
である。
【０００２】
【従来の技術】フイラメントミシン糸は紡績糸からなる
ミシン糸に比べて光沢があり、縫目が均一で且つ、ミシ
ン糸強度が高いことから、各種縫製に使用されている
が、解撚が起こり易いバック縫い及び千鳥縫いにおける
可縫性は紡績糸ミシン糸に比べて劣ると言う欠点を有し
ている。
【０００３】その原因としては、フイラメントミシン糸
の特長であるミシン糸強度を高く保つために、極限粘度
が通常より高いポリマーを使用して高い熱履歴を加えな
がら延伸が行なわれるため、その後のミシン糸形成工程
で加えられる下撚及び上撚りのトルクがミシン糸の染色
後も充分にセットされず、バック縫い及び千鳥縫いの
際、解撚が起こって縫目形成がうまく行かないためであ
ると考えられる。
【０００４】このような問題を解決するため、特開平５
−１０６１３４号公報には、２０％以上の伸度差を有す
る２種のフィラメント糸を複合させ、高伸度糸によりル
ープまたはゆるみを形成させて可縫性に優れたミシン糸
を得ることが開示されているが、該ミシン糸において
は、２種のフィラメント糸の分離が起こり、縫目の形態
に偏りが生じて均一性が劣ったり、染色した際に染着性
の差が目立つという問題があった。
【０００５】また、特開平９−７８３３５号公報には、
高複屈折率のフィラメント糸と低複屈折率のフィラメン
ト糸とを紡糸混繊し、低複屈折率のフィラメント糸を鞘
部に配したフィラメントミシン糸が開示されているが、
該ミシン糸は、複屈折率の差のみを利用しているために
強度が低下したり、糸がボビンからズレ落ち、スムーズ
な糸送りができなくなって切断したりすることがあり、
従来のフイラメントミシン糸と比べると、取扱い性が悪
いという問題があった。
【０００６】
【発明が解決しようとする課題】本発明の目的は、上述
のようなループやゆるみの形成に起因する欠点を改良
し、フイラメントの光沢を残しつつ均一な縫目を形成す
ることが可能で、且つ高速縫製性の良好なフイラメント
ミシン糸を提供することにある。
【０００７】
【課題を解決するための手段】本発明者らは上記目的を
達成するために鋭意検討した結果、紡糸混繊糸を構成す
るフィラメント糸の極限粘度〔η〕Fと伸度とを特定の
範囲に適宜制御するとき、所望のフイラメントミシン糸
が得られることを究明した。
【０００８】かくして本発明によれば、極限粘度〔η〕
Fが０．７〜１．２の範囲にあるポリエステルフィラメ
ントＡと、該ポリエステルフィラメントＡよりも極限粘
度〔η〕Fが０．２〜０．７低く、且つ伸度の大きいポ
リエステルフィラメントＢとが紡糸段階で混繊された紡
糸混繊糸から構成されていることを特徴とするフイラメ
ントミシン糸が提供される。
【０００９】
【発明の実施の形態】本発明においては、低伸度糸Ａと
高伸度糸Ｂとを同時に紡糸した後、引き揃えて同時に巻
き取る、いわゆる紡糸混繊法によりフイラメントミシン
糸を得る。
【００１０】具体的には、一般的な複合紡糸機（コンジ
ュゲート紡糸機など）を用いて、極限粘度を異にするポ
リエステルポリマーを同一口金に導き、混合することな
く別々の吐出孔から紡糸して一緒に巻き取る方法、又
は、紡糸口金が個々に独立していて、各々のポリマーを
単独に紡糸した後、引きそろえて巻き取る方法などが採
用でき、要するに、紡糸後の巻取り完了までに、両糸が
一緒になっていればいずれでも構わない。
【００１１】本発明で使用するポリエステルとは、ポリ
エチレンテレフタレート（以下ＰＥＴと略す）、ポリプ
ロピレンテレフタレート、ポリブチレンテレフタレート
等があげられるが、ＰＥＴがもっとも好ましく例示され
る。
【００１２】上記の低伸度糸Ａは、耐熱性、耐摩耗性、
強度の点から極限粘度の大きい事が必要であり、紡糸フ
イラメント糸の極限粘度〔η〕Fが０．７〜１．２の範
囲にある必要がある。該極限粘度が１．２を越える場合
は、重合に大掛かりな装置が必要となり、コストアップ
になる。
【００１３】また、高伸度糸Ｂとしては、極限粘度
〔η〕Fが上記低伸度糸の極限粘度〔η〕Fより０．２〜
０．７低いポリエステルを用いる。これは、高伸度糸Ｂ
の極限粘度を下げて殆ど熱応力が発生しない状態にして
おき、該高伸度糸Ｂによってトルクの残留している低伸
度糸Ａを抱え込ことにより、バック縫い及び千鳥縫いの
際のミシン糸のトルク発現を防止するためであり、トル
ク発現を防止するためには極限粘度の差が０．２以上必
要であるが、その差が０．７を越えると、高伸度糸の強
力が低くなりすぎ、ミシンがけの際に単繊維の切断が起
こり、縫い目が乱れ均一性が低下する原因となる。好ま
しい極限粘度の差は、０．３〜０．６である。
【００１４】上記高伸度糸Ｂは低伸度糸Ａよりも伸度が
大きければ良いが、同一の紡糸条件を採用した場合、通
常は極限粘度の低い方が伸度が大きくなる。
【００１５】上述のように、本発明においては紡糸混繊
法を採用するが、これは、紡糸巻き取りまでに低伸度糸
Ａと高伸度糸Ｂとが単繊維オーダで混ざるような紡糸巻
取り方法を採用することが必要であるからである。
【００１６】特に混ざりの良い紡糸混繊方法としては、
先に述べた、紡糸口金が同一であって、紡糸口金の吐出
孔をランダムに分散させた口金や、外輪孔と内輪孔から
成る口金、或いは半分割型の口金から低伸度糸と高伸度
糸を紡糸すれば良い。
【００１７】口金温度は、同一口金で紡糸する場合は両
ポリマーに適した温度に設定するが、別個の口金を使用
する場合は、それぞれ口金温度を別個に設定すれば良
い。
【００１８】紡糸速度については、紡速を高めるほうが
延伸後の伸度差は拡大するものの、延伸後の糸強度は低
紡速糸に比べ低くなる。従って、糸強度よりも生産性の
向上を求めるのであれば高紡速を選択すればよい。さら
には、紡糸と延伸が直結された方法で生産してもよく、
高速紡糸のみで延伸を達成させる方法を採用してもよ
い。
【００１９】本発明においては、低伸度糸Ａの糸強度は
高い程好ましく、少なくとも５．４ｇ／ｄｔｅｘ以上必
要である。一方、高伸度糸においても、ミシン掛け時の
摩擦や引張応力に耐える１．３ｇ／ｄｔｅｘ以上は必要
であり、ミシン糸全体としては４．０ｇ／ｄｔｅｘ以上
在れば充分である。
【００２０】低伸度糸Ａと高伸度糸Ｂとの混合割合は、
７：３〜９：１程度が好ましい。低伸度糸の混合割合が
７：３未満ではミシン糸として必要な応力が不足し、一
方、低伸度糸の混合割合が９：１を越えると、高伸度糸
の熱セット性が不足してミシン糸のトルク発生を抑える
ことが難しくなりことがある。好ましい範囲は８：２で
ある。
【００２１】さらに、低伸度糸Ａと高伸度糸Ｂとが充分
混ざり合うためには、低伸度糸のフィラメント数は８本
以上、高伸度糸のフィラメント数は３本以上が好まし
く、これ以下の組合せ本数では混ざりの偏りが生じ、不
均一な縫目となることがある。好ましくは、低伸度糸Ａ
と高伸度糸Ｂとのフィラメント数の合計が１５本〜４８
本の範囲であり、これ以上多いと単繊維繊度が細くなり
過ぎて糸強度が下がる欠点があるので好ましくなく、さ
らに光沢の面からもダル化の方向に向かうので好ましく
ない。
【００２２】本発明のミシン糸は、従来のミシン糸のよ
うなループやゆるみによらず、極限粘度差及び伸度差に
よる熱セット性の違いを利用して可縫性良好なミシン糸
用の原糸を提供するものである。つまり、特開平５−１
０６１３４号公報に開示されたミシン糸のような大きな
ループやゆるみを形成させなくとも、ミシン糸中の低伸
度糸と高伸度糸が適度にマイグレーションすることで充
分な熱セット効果が発現し、縫製中のミシン針及び基布
に接するミシン糸中の単繊維部分がランダムに入れ替わ
るので、熱の伝達が防止され、可縫性が向上するものと
推定される。
【００２３】つまり、これによりミシン針と基布から受
ける摩擦を一部の繊維が長く引きずることなく、絶えず
入れ替わることになり、ダメージを受けるまえに通りす
ぎることが出来るので、高速縫製に耐えるミシン糸を得
ることが出来る。
【００２４】また、本発明においては、ループに起因す
る縫目の不均一性を極力軽減するため、ミシン糸の染色
工程でミシン糸の収縮が起こらないよう、張力を掛けて
染めることが好ましい。具体的には、チーズ状に巻き上
げたものを染色釜の中で、押しつぶし、沢山のチーズを
一度に染色する方法が採用できる。この方法であれば、
チーズ全体に張力がかかり、繊維同士の密度が高いこと
から、自己伸長性の高い高伸度糸であってもループは形
成されず、均一なフイラメントミシン糸とすることが出
来る。
【００２５】ただ、ミシン糸の外観をスパナイズ化させ
たい時は、弛緩状態でミシン糸を染めることでループ発
現させる事は可能である。但し、この場合も、ループの
形成はあくまで外観のスパナイズ化程度の小さいものに
止めることが好ましい。
【００２６】
【実施例】以下実施例により本発明を詳細に説明する。
尚、実施例中の物性は下記の方法により測定した。
【００２７】（１）極限粘度〔η〕F
極限粘度はオルソクロロフェノール中、２５℃で常法に
より測定を行なった。
【００２８】（２）本縫高速直線可縫性
本縫い１本針ミシンを用いて、４０００ｒｐｍの速度、
ミシン針♯１４でＴ／Ｒサージ４枚を１分間縫製し、ミ
シン糸の切断の有りもしくは単糸切れ多発で外観不合格
の場合を（×）、単糸切れが発生するも極僅かで実用上
問題ない場合を（○）、単糸切れが全く発生しない場合
を（◎）として評価した。
【００２９】（３）バック縫可縫性
本縫い１本針ミシンを用いて、２０００ｒｐｍの速度、
ミシン針♯１１でバック方向にＴ／Ｒサージ１枚を３０
ｃｍ縫製し、ミシン糸の切断の有りもしくは単糸切れ多
発で外観不合格の場合を（×）、単糸切れが発生するも
極僅かで実用上問題ない場合を（○）、単糸切れが全く
発生しない場合を（◎）として評価した。
【００３０】［実施例１〜４、比較例１〜３］
（原糸の製造）低伸度糸用ポリマーとして、酸化チタン
を０．０２重量％含む、極限粘度０．６２〜１．１１の
ＰＥＴを、また、高伸度糸用ポリマーとして、酸化チタ
ンなどのつや消し剤を含まない、極限粘度０．３１〜
０．８５のＰＥＴを用意し、それぞれ１６０℃で４時間
乾燥した。
【００３１】上記両ポリマーを、３００℃で溶融した
後、半分割型の口金を用い、低伸度糸用ポリマーを１５
ホール、高伸度糸用ポリマーを５ホールから吐出させ、
紡糸下方に設けた横吹き紡糸筒内で室温の空気で冷却固
化せしめて、両糸が混繊された状態で油剤を付与した
後、１２００ｍ／分で引き取って１８０ｄｔｅｘ／２０
フイラメントの未延伸を得た。該未延伸は１４４ｄｔｅ
ｘの低伸度糸と３６ｄｔｅｘの高伸度糸とで構成された
ものであった。
【００３２】次に、この未延伸糸を延伸機に掛けて、以
下の条件で延伸を行った。即ち、直径９０ｍｍの余熱ロ
ーラの表面温度を９０℃とし、速度２００ｍ／分で６タ
ーンさせ、続いて直径１２０ｍｍの延伸セットローラの
表面温度を１４０℃とし、速度６００ｍ／分で４ターン
させて延伸と熱セットを終え、続いて、直径１２０ｍｍ
の二次セットローラの表面温度を２００℃とし、速度５
９５ｍ／分で４ターンさせて、熱セットを加えた後巻き
取った。得られた延伸糸の平均繊度は５９ｄｔｅｘであ
った。
【００３３】（ミシン糸の製造）上記延伸糸に１０５０
Ｔ／ＭのＳ撚りを施した後、３本あわせて、７００Ｔ／
ＭのＺ撚りを施しミシン糸とした後、チーズに巻き取
り、１３０℃、４０分の染色処理を行なった。染色方法
としては、チーズを重ね合わせ、圧縮荷重を掛け延伸糸
に張力が掛かった状態で処理した。
【００３４】乾燥後、シリコン系油剤を３％塗布してミ
シン糸とした。
【００３５】得られた延伸糸及びミシン糸の性能を表１
に示す。尚、延伸糸中の低伸度糸と高伸度糸の強伸度
は、延伸糸中より単繊維を各５本ランダムに抜き取り、
単繊維強伸測定機に掛けて測定した結果を平均値で表し
たものである。
【００３６】
【表１】
【００３７】実施例１は本縫い及びバック縫いとも良好
な可縫性を示した。また、縫製後のミシン糸外観は若干
の単糸切れが見られたものの、実用上、全く問題のない
レベルであった。
【００３８】実施例２〜４は本縫い及びバツク縫いとも
全く問題のない良好な可縫性を示し、ミシン糸外観も均
一で且つ光沢に富むものであつた。
【００３９】比較例１は本縫い及びバック縫いでミシン
糸の切断が起こった。これは強度を保持する低伸度糸の
極限粘度が低く、ミシン糸強度が低いことに起因する。
【００４０】比較例２は本縫いは全く問題なく良好な可
縫性をしめしたが、バック縫いではミシン糸の切断が起
こった。これは低伸度糸と高伸度糸の極限粘度の差が少
なく且つ、高伸度糸の極限粘度が高いのでセット性が悪
くなったことに起因する。
【００４１】比較例３では本縫いバック縫いとも多数の
単糸切れや単糸脱落が発生し、外観の均一性に欠けるも
のであった。これは高伸度糸の極限粘度が低すぎること
に起因する。
【００４２】
【発明の効果】本発明によれば、従来のミシン糸が有す
る、ループやゆるみの形成に起因する欠点を改良し、フ
イラメントの光沢を残しつつ均一な縫目を形成すること
が可能で、且つ高速縫製性の良好なフイラメントミシン
糸が提供される。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a filament sewing thread capable of forming uniform stitches while maintaining the luster of the filament and having good high-speed sewing properties. Things. 2. Description of the Related Art Filament sewing threads are used for various kinds of sewing because they are glossy, have uniform seams, and have high sewing thread strength as compared with sewing threads made of spun yarn. There is a drawback that the sewability of the back stitch and the staggered stitch, in which twisting easily occurs, is inferior to that of a spun sewing thread. [0003] The reason for this is that in order to maintain a high strength of the sewing thread, which is a feature of the filament sewing thread, drawing is performed while applying a high heat history using a polymer having an intrinsic viscosity higher than usual. The reason is that the torque of the lower twist and the upper twist applied in the thread forming step is not sufficiently set even after the dyeing of the sewing thread, and during back stitching and zigzag stitching, untwisting occurs and stitch formation does not work well. Conceivable. In order to solve such a problem, Japanese Patent Laid-Open No.
JP-A-106134 discloses that two kinds of filament yarns having a difference of elongation of 20% or more are combined, and a loop or a slack is formed by a high elongation yarn to obtain a sewing thread excellent in sewability. However, in the case of the sewing thread, there is a problem that separation of two kinds of filament yarns occurs, the form of the stitch is uneven, resulting in poor uniformity, and a difference in dyeing property when dyeing is conspicuous. there were. Japanese Patent Application Laid-Open No. 9-78335 discloses that
A filament sewing machine yarn in which a high birefringence filament yarn and a low birefringence filament yarn are spun and mixed, and a low birefringence index filament yarn is arranged in a sheath portion, is disclosed.
Since the sewing thread uses only the difference in birefringence, the strength may decrease, or the thread may slip off the bobbin, and may not be able to be smoothly threaded and may be cut.
There was a problem that the handleability was poor as compared with the conventional filament sewing thread. SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks caused by the formation of loops and slacks, and to form a uniform seam while maintaining the gloss of the filament. An object of the present invention is to provide a filament sewing thread that is possible and has good high-speed sewing properties. Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, have found that the intrinsic viscosity [η] F and the elongation of the filament yarn constituting the spun mixed yarn are determined. It has been determined that a desired filament sewing thread can be obtained when appropriately controlled to a specific range. Thus, according to the present invention, the intrinsic viscosity [η]
A polyester filament A having a F in the range of 0.7 to 1.2 and a polyester filament B having an intrinsic viscosity [η] F of 0.2 to 0.7 lower than the polyester filament A and a large elongation are used. A filament sewing thread is provided, which is constituted by a spun mixed yarn mixed in a spinning step. DETAILED DESCRIPTION OF THE INVENTION In the present invention, a filament sewing machine yarn is produced by a so-called spinning fiber blending method, in which a low elongation yarn A and a high elongation yarn B are simultaneously spun, then aligned and wound simultaneously. obtain. [0010] Specifically, using a general composite spinning machine (such as a conjugate spinning machine), polyester polymers having different intrinsic viscosities are guided to the same die and spun from separate discharge holes without mixing. Or a method in which the spinnerets are individually independent and each polymer is independently spun and then aligned and wound. Either can be used as long as both yarns are together. The polyester used in the present invention includes polyethylene terephthalate (hereinafter abbreviated as PET), polypropylene terephthalate, polybutylene terephthalate and the like, and PET is most preferred. The low elongation yarn A has heat resistance, abrasion resistance,
It is necessary that the intrinsic viscosity is large from the viewpoint of strength, and the intrinsic viscosity [η] F of the spun filament yarn needs to be in the range of 0.7 to 1.2. When the intrinsic viscosity exceeds 1.2, a large-scale apparatus is required for polymerization, and the cost is increased. The high elongation yarn B has an intrinsic viscosity [η] F of 0.2 to 0.2 from the intrinsic viscosity [η] F of the low elongation yarn.
Use 0.7 lower polyester. This is high elongation yarn B
The intrinsic viscosity is lowered so that almost no thermal stress is generated, and the high elongation yarn B holds the low elongation yarn A with the remaining torque, so that the sewing machine at the time of back stitching and staggered sewing is carried out. In order to prevent the torque from appearing in the yarn, the difference in intrinsic viscosity is required to be 0.2 or more in order to prevent the torque from appearing. If the difference exceeds 0.7, the strength of the high elongation yarn is reduced. It becomes too low and cuts the single fiber when sewing, causing seams to be disturbed and uniformity to be reduced. A preferred difference in intrinsic viscosity is 0.3 to 0.6. The high elongation yarn B may have a higher elongation than the low elongation yarn A, but when the same spinning conditions are employed, the lower the intrinsic viscosity, the higher the elongation. As described above, the spinning blending method is employed in the present invention, and the spinning method is such that the low elongation yarn A and the high elongation yarn B are mixed in the order of a single fiber before winding. This is because it is necessary to adopt a winding method. [0016] As a particularly good spinning fiber blending method,
As described above, a spinneret having the same spinneret, in which the discharge holes of the spinneret are randomly dispersed, a spinneret having an outer ring hole and an inner ring hole, or a low elongation yarn and a high elongation from a half-split type die. The spinning yarn may be spun. The spinneret temperature is set to a temperature suitable for both polymers when spinning with the same spinneret, but when using separate spinnerets, the respective spinneret temperatures may be set separately. Regarding the spinning speed, increasing the spinning speed increases the elongation difference after drawing, but the yarn strength after drawing is lower than that of the low spinning speed yarn. Therefore, if it is desired to improve the productivity rather than the yarn strength, a high spinning speed may be selected. Furthermore, it may be produced by a method in which spinning and drawing are directly connected,
A method of achieving stretching only by high-speed spinning may be employed. In the present invention, the yarn strength of the low elongation yarn A is preferably as high as possible, and at least 5.4 g / dtex or more is required. On the other hand, even for a high elongation yarn, 1.3 g / dtex or more that withstands friction and tensile stress during sewing is required, and 4.0 g / dtex or more for the entire sewing yarn is sufficient. The mixing ratio of the low elongation yarn A and the high elongation yarn B is as follows:
It is preferably about 7: 3 to 9: 1. When the mixing ratio of the low elongation yarn is less than 7: 3, the stress required for the sewing thread is insufficient, while when the mixing ratio of the low elongation yarn exceeds 9: 1, the heat setting property of the high elongation yarn is insufficient. Therefore, it may be difficult to suppress the generation of torque of the sewing thread. The preferred range is 8: 2. Further, in order to sufficiently mix the low elongation yarn A and the high elongation yarn B, the number of filaments of the low elongation yarn is preferably eight or more, and the number of filaments of the high elongation yarn is preferably three or more. However, if the number of combinations is smaller than the above range, mixing bias may occur, resulting in non-uniform stitches. Preferably, low elongation yarn A
And the total number of filaments of the high elongation yarn B is 15 to 48
If it is more than this range, it is not preferable because the fineness of the single fiber becomes too fine and there is a disadvantage that the yarn strength is lowered. The sewing thread of the present invention uses a difference in heat setting property due to a difference in intrinsic viscosity and a difference in elongation without using a loop or loosening unlike a conventional sewing thread, and is used for a sewing thread having good sewability. It is to provide the original yarn. That is, Japanese Patent Laid-Open No. 5-1
Even without forming a large loop or slack as in the sewing thread disclosed in JP-A-06134, a sufficient heat setting effect is exhibited by appropriately migrating the low elongation yarn and the high elongation yarn in the sewing yarn. It is presumed that since the sewing machine needle being sewn and the single fiber portion of the sewing thread in contact with the base cloth are randomly replaced, heat transfer is prevented and the sewability is improved. In other words, by this, some of the fibers do not drag the friction received from the sewing needle and the base fabric for a long time, but are constantly replaced, and the fibers can pass through before being damaged, so that the sewing thread can withstand high-speed sewing. Can be obtained. Further, in the present invention, in order to minimize non-uniformity of the seam caused by the loop, it is preferable that the dyeing is performed under tension so that the sewing thread does not shrink in the dyeing step of the sewing thread. Specifically, a method of crushing a cheese-wound product in a dyeing kettle and dyeing a lot of cheese at a time can be adopted. With this method,
Since tension is applied to the whole cheese and the density of the fibers is high, no loop is formed even with a high elongation yarn having high self-extensibility, and a uniform filament sewing yarn can be obtained. However, when it is desired to make the appearance of the sewing thread spanished, it is possible to develop a loop by dyeing the sewing thread in a relaxed state. However, also in this case, it is preferable that the formation of the loop is limited to a small extent of the appearance of the spanning. The present invention will be described in detail with reference to the following examples.
The physical properties in the examples were measured by the following methods. (1) Intrinsic Viscosity [η] The F intrinsic viscosity was measured in orthochlorophenol at 25 ° C. by a conventional method. (2) Lockstitch High-speed linear sewability Using a lockstitch single-needle sewing machine, a speed of 4000 rpm,
Four T / R surges are sewn for one minute with sewing machine needle # 14, and if the sewing thread is cut or the single thread breaks frequently and the appearance is rejected (x), the single thread break occurs, but it is very practical The case where there was no problem was evaluated as (○), and the case where no single yarn break occurred was evaluated as (◎). (3) Back stitch sewability Using a single-stitch single-needle sewing machine, a speed of 2000 rpm,
One T / R surge in back direction with sewing machine needle # 11
cm, when the sewing thread is cut or the single thread breaks frequently, and the appearance is rejected (x). When the single thread break occurs but is very slight and there is no practical problem (○), the single thread break occurs. The case where no occurrence occurred was evaluated as (◎). Examples 1 to 4 and Comparative Examples 1 to 3 (Production of Raw Yarns) As a polymer for low elongation yarns, containing 0.02% by weight of titanium oxide and having an intrinsic viscosity of 0.62 to 1.11. PET, as a polymer for high elongation yarn, without a matting agent such as titanium oxide, intrinsic viscosity 0.31 to
0.85 PET was prepared and dried at 160 ° C. for 4 hours. After the above polymers are melted at 300 ° C., the polymer for low elongation yarn is reduced to 15% using a half-split die.
Hole, high elongation yarn polymer is discharged from 5 holes,
After cooling and solidifying with air at room temperature in a horizontal blowing spinning tube provided below the spinning, applying an oil agent in a state where both yarns are mixed, the yarn is taken out at 1200 m / min and 180 dtex / 20.
An unstretched filament was obtained. The unstretched is 144 dte
x low elongation yarn and 36 dtex high elongation yarn. Next, the undrawn yarn was drawn in a drawing machine and drawn under the following conditions. That is, the surface temperature of the preheating roller having a diameter of 90 mm is set to 90 ° C., the speed is set to 6 turns at a speed of 200 m / min, and then the surface temperature of the stretching set roller having a diameter of 120 mm is set to 140 ° C., and the turning is performed at a speed of 600 m / min for 4 turns. And heat set, then 120mm in diameter
The surface temperature of the secondary set roller was 200 ° C., and the speed was 5
After making 4 turns at 95 m / min and applying a heat set, it was wound up. The average fineness of the obtained drawn yarn was 59 dtex. (Production of sewing thread)
After applying T / M S twist, 700 T /
After giving the Z thread of M and making a sewing thread, it was wound around cheese and dyed at 130 ° C. for 40 minutes. As a dyeing method, cheeses were superimposed, processed under a state where tension was applied to a drawn yarn by applying a compressive load. After drying, 3% of a silicone oil was applied to obtain a sewing thread. Table 1 shows the performances of the obtained drawn yarn and sewing thread.
Shown in In addition, the strong elongation of the low elongation yarn and the high elongation yarn in the drawn yarn is such that five single fibers are randomly extracted from the drawn yarn, and
It is a result obtained by measuring with a single fiber strong elongation measuring machine and expressed as an average value. [Table 1] Example 1 showed good sewability for both the lock stitch and the back stitch. Further, the sewing thread appearance after sewing had a slight break in the single thread, but was at a level having no problem in practical use. Examples 2 to 4 showed good sewability without any problem in both the lock stitch and the back stitch, and the sewing thread appearance was uniform and rich in gloss. In Comparative Example 1, the sewing thread was cut by the lock stitch and the back stitch. This is due to the low intrinsic viscosity of the low elongation yarn maintaining the strength and the low strength of the sewing thread. In Comparative Example 2, the lock stitch showed good sewability without any problem, but in the back stitch, the sewing thread was cut. This is because the difference between the intrinsic viscosities of the low elongation yarn and the high elongation yarn is small, and the intrinsic elongation of the high elongation yarn is high. In Comparative Example 3, a large number of single thread breaks and single thread drop-offs occurred in both the backstitch and the lock stitch, and the uniformity of the appearance was lacking. This is because the intrinsic viscosity of the high elongation yarn is too low. According to the present invention, it is possible to improve the disadvantages of conventional sewing threads caused by the formation of loops and slacks, and to form uniform seams while maintaining the luster of the filament. And a filament sewing thread having high speed sewing property.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大洞 謙二 大阪府大阪市中央区南本町１丁目６番７号 帝人株式会社内 (72)発明者 中山 元二 大阪府茨木市耳原３丁目４番１号 帝人株 式会社大阪研究センター内 Ｆターム(参考） 4L036 MA05 MA33 MA39 PA01 PA21 PA33 UA21 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kenji Odo 1-6-7 Minamihonmachi, Chuo-ku, Osaka-shi, Osaka Teijin Limited (72) Inventor Genji Nakayama Teijin Limited, 3-4-1 Amihara, Ibaraki-shi, Osaka Osaka Research Center F term (reference) 4L036 MA05 MA33 MA39 PA01 PA21 PA33 UA21
Claims (1)
囲にあるポリエステルフィラメントＡと、該ポリエステ
ルフィラメントＡよりも極限粘度〔η〕Fが０．２〜
０．７低く、且つ伸度の大きいポリエステルフィラメン
トＢとが紡糸段階で混繊された紡糸混繊糸から構成され
ていることを特徴とするフイラメントミシン糸。Claims: 1. A polyester filament A having an intrinsic viscosity [η] F in the range of 0.7 to 1.2, and an intrinsic viscosity [η] F of 0.2 or less than the polyester filament A. ~
A filament sewing thread comprising a spun blended yarn blended in a spinning stage with a polyester filament B having a low elongation of 0.7.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001246979A JP2003055853A (en) | 2001-08-16 | 2001-08-16 | Filament thread for machine sewing |
| DE60218483T DE60218483T2 (en) | 2001-08-16 | 2002-08-14 | FROM FILAMENTS OF EXISTING MACHINERY NEEDLE |
| PCT/JP2002/008277 WO2003016603A1 (en) | 2001-08-16 | 2002-08-14 | Filament machine sewing yarn |
| US10/468,103 US6811872B2 (en) | 2001-08-16 | 2002-08-14 | Filament machine sewing thread |
| EP02760635A EP1418260B1 (en) | 2001-08-16 | 2002-08-14 | Filament machine sewing yarn |
| KR1020037007093A KR100883286B1 (en) | 2001-08-16 | 2002-08-14 | Filament machine sewing yarn |
| CNB028032004A CN1316084C (en) | 2001-08-16 | 2002-08-14 | Felament machine sewing yarn |
| AT02760635T ATE355406T1 (en) | 2001-08-16 | 2002-08-14 | MACHINE SEWING THREAD MADE OF FILAMENTS |
| HK04106915A HK1064132A1 (en) | 2001-08-16 | 2004-09-11 | Filament machine sewing yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001246979A JP2003055853A (en) | 2001-08-16 | 2001-08-16 | Filament thread for machine sewing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003055853A true JP2003055853A (en) | 2003-02-26 |
Family
ID=19076412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001246979A Pending JP2003055853A (en) | 2001-08-16 | 2001-08-16 | Filament thread for machine sewing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003055853A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146307A (en) * | 2005-11-24 | 2007-06-14 | Teijin Fibers Ltd | Filament sawing thread |
| KR20160149190A (en) * | 2014-02-19 | 2016-12-27 | 메르크 파텐트 게엠베하 | Cyclic amine surface modifier and organic electronic devices comprising such cyclic amine surface modifier |
-
2001
- 2001-08-16 JP JP2001246979A patent/JP2003055853A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007146307A (en) * | 2005-11-24 | 2007-06-14 | Teijin Fibers Ltd | Filament sawing thread |
| KR20160149190A (en) * | 2014-02-19 | 2016-12-27 | 메르크 파텐트 게엠베하 | Cyclic amine surface modifier and organic electronic devices comprising such cyclic amine surface modifier |
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