JP3638823B2 - Original thread for embroidery sewing thread - Google Patents

Original thread for embroidery sewing thread Download PDF

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Publication number
JP3638823B2
JP3638823B2 JP19871199A JP19871199A JP3638823B2 JP 3638823 B2 JP3638823 B2 JP 3638823B2 JP 19871199 A JP19871199 A JP 19871199A JP 19871199 A JP19871199 A JP 19871199A JP 3638823 B2 JP3638823 B2 JP 3638823B2
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Japan
Prior art keywords
embroidery sewing
sewing thread
yarn
thread
embroidery
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JP19871199A
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JP2001032133A (en
Inventor
元二 中山
雄一 金子
智秋 田代
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 Techno Products Ltd
Teijin Fibers Ltd
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Teijin Techno Products Ltd
Teijin Fibers Ltd
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Priority to JP19871199A priority Critical patent/JP3638823B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、刺しゅうミシン糸用原糸に関し、さらに詳しくは、染色加工性がよく、光沢、可縫性に優れた刺しゅうミシン糸を可能にするポリエステルフィラメント糸からなる刺しゅうミシン糸用原糸に関する。
【0002】
【従来の技術】
従来、刺しゅうミシン糸には、染色加工性、可縫性、光沢が優れているという理由でレーヨンフィラメント糸が主として用いられてきた。
【0003】
しかし、レーヨンフィラメント糸は、その強力が低いために撚糸工程での糸切れが多く加工性が悪いばかりでなく、そのミシン糸には結び目が多く存在し、刺しゅう縫製作業の際に該結び目が針穴に詰まって切断するという問題点を有している。また、レーヨンフィラメント糸は湿潤状態になると収縮し強力が低下するために、刺しゅう加工品が雨に濡れたり、洗濯などで湿潤状態になったときに刺しゅう面が引きつれたり、摩擦などにより毛羽立ったり切断したりして刺しゅう加工品の外観を損なうという問題もあった。
【0004】
かかる問題を解決するために高強度で、且つ、湿潤による物性変化の少ないポリエステルフィラメント糸を用いる試みがなされているが、ポリエステルフィラメント糸はレーヨンフィラメント糸に比べて光沢が劣るという問題点がある。このような問題点を解消するために、例えば、特開平5−125635号公報には無機微粒子の含有量を少なくした異形断面ポリエステル糸を用いることが提案されている。この提案によるミシン糸では、光沢の向上は認められるが、単繊維繊度が細いので光沢が不十分であり、さらに、刺しゅうミシン糸としては可縫性に問題があり、また、熱収縮によるチーズ染色時の染色斑が発生し、満足する刺しゅうミシン糸を提供することが出来なかった。
【0005】
また、特開昭62−125033号公報には、ミシン糸を構成するフィラメントの単繊維繊度を3〜6deの範囲にすることにより、タオル目を防止をすることが提案されているが、ここに開示されたミシン糸では、光沢や染色加工性が十分ではなく、満足出来る刺しゅうミシン糸を得る事が出来なかった。
【0006】
【発明が解決しようとする課題】
本発明は、かかる従来技術の問題点を解消し、染色加工性が良く、可縫性と光沢に優れた刺しゅうミシン糸を可能にするポリエステルフィラメント糸からなる刺しゅうミシン糸用原糸を提供することにある。
【0007】
【課題を解決するための手段】
本発明によれば、無機微粒子を含有しないポリエステルフィラメント糸からなり、該ポリエステルフィラメント糸は、その断面異形度が1.5〜2.3の範囲にある三角形状断面を有し、単繊維繊度が3.3〜5.5デニールの範囲にあり、且つ、150℃の温度における乾熱収縮率が1.5〜2.8%の範囲にあることを特徴とする刺しゅうミシン糸用原糸が提供される。
【0008】
【発明の実施の形態】
以下、本発明を詳細に説明する。
本発明の刺しゅうミシン糸用原糸に用いるポリエステルは、公知の方法によって得られるものを用いることが出来る。すなわち、ここでいうポリエステルとは、テレフタル酸を主たるジカルボン酸成分とし、少なくとも1種のグリコール、好ましくは、エチレングリコール、トリメチレングリコール、テトラメチレングリコールなどから選ばれた少なくとも1種のアルキレングリコールを主たるグリコール成分とするポリエステルからなるものである。このようなポリエステルは、必要に応じて第3成分が共重合及び/又はブレンドされていることにより変性されていても良い。
【0009】
このような第3成分を含有するポリエステルとしては、スルホン酸金属塩を含有するイソフタル酸成分、例えば、5ーナトリウムスルホイソフタル酸あるいは5ーテトラブチルホスホニウウムスルホイソフタル酸などを公知の方法で共重合したものでもよい。
【0010】
本発明で用いるポリエステルフィラメント糸には、酸化チタン等の無機微粒子を実質的に含有しないことが必要である。該ポリエステルフィラメント糸に無機微粒子が含有していると刺しゅうミシン糸にした場合に、光を乱反射させて光沢を阻害するので、高光沢を志向する本発明においては無機微粒子を含有しないことが必要なのである。したがって、本発明で用いるポリエステルフィラメント糸としては、スーパーブライトと称される酸化チタン等の無機微粒子を実質的に含有しないポリエチレンテレフタレートからなるポリエステルフィラメント糸が最も好ましく使用される。但し、刺しゅうミシン糸用原糸を製造する過程で付着・含有する塵埃等の不純物は構わない。
【0011】
次に、本発明で用いるポリエステルフィラメント糸は、その断面が三角形状を有し、その断面異形度が1.5〜2.3の範囲にあることが重要であり、このような異形度を有する三角形状断面は、ほぼ正三角形の断面形状を有するものがよい。繊維の側面に平面を形成するような断面形状の糸は、該平面が光を正反射させて高光沢が得られることがよく知られている。しかしながら、単に繊維の側面に平面を形成するような断面形状の糸としては、偏平断面(長辺が極端に長い長方形断面)の糸があり、この糸は最も高光沢が得られるが、このような偏平糸では曲剛性に異方性があるためにミシン糸にした場合には可縫性が低下し、高可縫性を志向する本発明には適しない。さらに、該断面形状が、四角形、五角形、六角形等の場合には、曲剛性の異方性が少なく、したがって可縫性の低下は少ないが、繊維側面の平面が分散(例えば、断面が五角形なら5分散)するので正反射光が分散して弱くなり光沢が低下するので好ましくない。
【0012】
このように本発明においては、断面が三角形状を有し、且つ、該断面形状の異形度の範囲が光沢を向上させる点から重要であるが、本発明でいう断面異形度とは、断面形状の外接円の直径を断面形状の内接円の直径で除した値であって、幾何学図形による正三角形では該断面異形度は、2となり正反射による高光沢、且つ、高可縫性を得ることを目的とする本発明には最も好ましい。
【0013】
断面形状が三角形の場合に、該断面異形度が2未満のものでは、三角形の辺が外側に膨らむ曲線部分を含むものであり光が拡散反射する繊維側面を含み、逆に、断面異形度が2を超えるものでは、辺の長さが異なる三角断面となり前記の曲剛性の異方性が大きくなるか、若しくは、辺の長さがほぼ同じ三角断面の場合には、辺が内側へ向いた曲線部分を含むものとなり光が集光拡散する繊維側面を含むものとなる。光の正反射が大で曲剛性の異方性が小さい断面は、出来るだけ正三角形に近いものが好ましいが、しかし、実際に使用されるポリエステルフィラメントの場合は、三角形の断面の頂点部が丸味をもつために辺の部分が直線であっても異形度は2より少なくなる。従って、本発明で使用されるポリエステルフィラメント糸は、三角形状断面を有し、その断面異形度は1.5〜2.3の範囲にあるものがよく、さらに好ましくは、1.6〜1.9の範囲である。
【0014】
次に、本発明に使用するポリエステルフィラメント糸の単繊維繊度は3.0〜5.5デニールの範囲にあることが必要である。該単繊維繊度が3デニール未満の場合は、光沢が不十分であり、さらに、可縫性も劣り本発明の効果が得られない。すなわち、繊維の側面に形成される平面は光の正反射光を多くし、光沢を向上させるものであることは前記の通りであるが、さらに、該正反射光量(光沢の強さ)は該平面部の面積に比例する。該単繊維繊度が大きいほど、該平面部の単面積は広く、特に、撚糸して用いることの多い刺しゅうミシン糸の場合、該撚糸により平面部は捩れてランダムな方向を向くために該平面部の単面積を広くすることが重要なのである。さらに、該単繊維繊度が小さい場合は、単繊維の曲剛性と強力が小さいためにミシン掛け時のループ形成性が悪く、目飛びや単糸切れ等の縫製トラブルが発生し易く好ましくない。
【0015】
逆に、該単繊維繊度が5.5デニールを超える場合には、曲剛性が大きくなり過ぎて、刺しゅう製品にした時に、刺しゅうミシン糸と生地のフィット性が悪くなり、また、刺しゅう製品の風合いが硬くなり好ましくない。
【0016】
次に、本発明に使用するポリエステルフィラメント糸は、150℃の温度における乾熱収縮率が1.5〜2.8%の範囲にある必要がある。該乾熱収縮率が2.8%を超える場合は、該ポリエステルフィラメント糸をチーズ染色する際に、糸が収縮してチーズ巻硬度が高くなり染色液の通過性が悪くなって染め斑を発生させる。一般縫製用のミシン糸は縫い目が線状であるため、染色斑は目立ち難いが、刺しゅうミシン糸の場合は、模様が面で用いられることが多いために染色斑が目立ち易く染色斑の防止が重要となり、これを防止するためには該乾熱収縮率が2.8%以下でなければならない。また、該乾熱収縮率が大きいと内層部の糸が定長状態で熱処理されるのに対して、外層部の糸は弛緩状態、若しくは、収縮可能状態で熱処理されるために、内層部と外層部とでは糸の物性差を生じることにもなり好ましくない。
【0017】
逆に、該乾熱収縮率が1.5%未満では、製糸条件が厳しくなり製糸コストが高くなるので好ましくない。なお、本発明でいう乾熱収縮率は、JIS−L1013 7・15(2.1)法に準拠し、処理温度を150℃にすることにより測定して得た値である。
【0018】
また、本発明の刺しゅうミシン糸用原糸の総繊度、強度、伸度は、特に限定しないが、総繊度は50〜150デニールの範囲のものが好適に例示できる。特に総繊度が120デニール程度のものは、刺しゅうミシン糸用原糸として最も好ましい。また、強度は3〜7g/deの範囲のもが例示できるが、5.5g/de程度のものが可縫性や刺しゅう製品の耐久性の面から好適である。また、伸度は16〜35%の範囲のものが例示されるが、可縫性、刺しゅう製品の風合いの面から23〜28%程度が好適である。
【0019】
【発明の作用】
本発明の刺しゅうミシン糸用原糸は、無機微粒子を含まず、適正な断面異形度の三角断面を有するポリエステルフィラメント糸からなり、該ポリエステルフィラメント糸が適正な範囲の単繊維繊度、乾熱収縮率を有するために、高光沢を可能にし、可縫性に優れ、また、染色時の染色斑や物性斑が少なく、優れた刺しゅうミシン糸を提供することが出来る。これらの特性のすべてが満足されるのは、無機微粒子を含まないポリエステルを使用し、断面異形度、単繊維繊度、乾熱収縮率の全てを同時に満足するポリエステルフィラメント糸を使用するものであって、特に断面異形度が1.5〜2.3の範囲にある三角形状断面とすることにより得られるものであり、これにより従来のポリエステルフィラメント糸を使用した刺しゅうミシン糸では得られない効果を得ることが出来たものである。
【0020】
【実施例】
以下、実施例により本発明をさらに詳細に説明する。なお、実施例で行った刺しゅうミシン糸の評価は下記の方法によった。
【0021】
(1)光沢及び染色斑
実施例で得られた刺しゅうミシン糸の染色チーズの内層部、中層部、外層部からそれぞれの糸を採取し、この糸を5×5cmの黒厚紙に密接平行巻して、光沢及び染色斑を視感判定し評価した。
【0022】
(2)可縫性評価
実施例で得られた刺しゅうミシン糸を用いて、刺しゅうミシン(バルダン社製)により市販のポリエステル/綿ブロード布帛(混率:60/40)を2枚重ねたものにN字模様の刺しゅう縫製を20回実施し、目飛びなどの縫製トラブルの有無及び得られた縫製品の品位について評価した。
【0023】
[実施例1]
無機微粒子を含有しないポリエチレンテレフタレートからなるポリエステルをY字形孔を36ケ有する紡糸口金を用い、紡糸温度:293℃、紡糸速度:1000m/分の条件で溶融紡糸した後、温度:100℃のローラーを経て2.9倍の第1延伸、温度:220℃のローラーを経て1.3倍の第2延伸を行う2段延伸法により延伸を行い、引続いて、温度:200℃、弛緩率:5%の条件下で弛緩処理を施した後に巻き取り、120デニール、36フィラメント(単繊維繊度:3.3de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.8の正三角に近い断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
【0024】
該刺しゅうミシン糸用原糸を用い、650T/mのS方向撚りを施して単糸とし、該単糸の2本を引き揃えて550T/mのZ方向で合撚して撚り糸を得た。該撚り糸を染色用チーズ(糸巻量:1Kg)に巻き、温度:130℃、60分間の常法により染色加工を施した後、シリコン系油剤を糸重量に対して3%付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を前記の方法により評価し、その結果を表1に示す。
【0025】
[比較例1]
実施例1において使用したY字形孔を有する紡糸口金に代えて、該Y字形孔を形成するスリットの幅を広巾にした紡糸口金(得られる糸の断面は、三角形の辺の線が外側に膨らむ曲線を有する断面となる)を用いる以外は実施例1と同様に実施して、120デニール、36フィラメント(単繊維繊度:3.3de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.2のほぼ三角形の断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0026】
[比較例2]
実施例1において使用したY字形孔を有する紡糸口金に代えて、該Y字形孔を形成するスリットの幅を細巾にした紡糸口金(得られる糸の断面は三角形の辺の線が内側に凹んだ曲線を有する断面となる)を用いる以外は実施例1と同様に実施して、120デニール、36フィラメント(単繊維繊度:3.3de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:2.6のほぼ三角形の断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0027】
[比較例3]
実施例1において使用したY字形孔を36ケ有する紡糸口金に代えて、48ケのY字形孔を有する紡糸口金を用いる以外は実施例1と同様に実施して、120デニール、48フィラメント(単繊維繊度:2.5de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.8の正三角に近い断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0028】
[比較例4]
実施例1において使用したY字形孔を36ケ有する紡糸口金に代えて、20ケのY字形孔を有する紡糸口金を用いる以外は実施例1と同様に実施して、120デニール、20フィラメント(単繊維繊度:6.0de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.8の正三角に近い断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0029】
[比較例5]
実施例1において、延伸に引続いて実施した弛緩処理を温度:180℃、弛緩率:2%の条件下で行うこと以外は、実施例1と同様にして実施し、120デニール、36フィラメント(単繊維繊度:3.3de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.8の正三角に近い断面を有し、温度:150℃での乾熱収縮率は5.0%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0030】
[比較例6]
実施例1で使用した無機微粒子を含有しないポリエチレンテレフタレートからなるポリエステルを用いる代わりに、酸化チタンを0.07重量%添加ブレンドしたポリエチレンテレフタレートからなるポリエステルを用いる以外は、実施例1と同様に実施して、120デニール、36フィラメント(単繊維繊度:3.3de)の刺しゅうミシン糸用原糸を得た。該刺しゅうミシン糸用原糸は、断面が異形度:1.8の正三角に近い断面を有し、温度:150℃での乾熱収縮率は1.8%であった。
得られた刺しゅうミシン糸用原糸を用い、実施例1と同様にして撚り加工、染色加工を施し、実施例1と同様の油剤を付与して刺しゅうミシン糸を得た。得られた刺しゅうミシン糸を実施例1と同様にして評価し、その結果を表1に併せて示す。
【0031】
【表1】

Figure 0003638823
【0032】
表1に示すように、実施例1に示す刺しゅうミシン糸は、光沢に優れ、染色斑もなく、刺しゅう縫製の際にも何らトラブルがなかった。一方、比較例1や比較例2に示す刺しゅうミシン糸は、光沢性に劣り、さらに、比較例3に示す刺しゅうミシン糸は、光沢性が劣り、また、刺しゅう縫製において、目とびや単糸切れのトラブルが発生した。比較例4に示す刺しゅうミシン糸を用いたものは、刺しゅう製品の表面がゴワゴワとして硬くなり生地と刺しゅうミシン糸とのフィット性が悪く、刺しゅう製品の品位を低下させるものであり、比較例5に示す刺しゅうミシン糸では染色斑が発生し、また、比較例6に示す刺しゅうミシン糸は、ポリエステルが酸化チタンを含有するものであるために光沢が劣ったものであった。
【0033】
【発明の効果】
以上説明したように、実施例で示す本発明の刺しゅうミシン糸用原糸を用いた刺しゅうミシン糸は、光沢に優れ、染色斑の発生もなく、可縫性も優れてている。これに比べ比較例による刺しゅうミシン糸用原糸を用いた刺しゅうミシン糸は、光沢や染色斑や可縫性に欠点を有していた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an embroidery sewing machine yarn, and more particularly, to an embroidery sewing machine yarn made of a polyester filament yarn that enables an embroidery machine yarn having good dyeability, gloss and sewing properties.
[0002]
[Prior art]
Conventionally, rayon filament yarn has been mainly used as an embroidery sewing thread because it has excellent dyeing processability, sewability and gloss.
[0003]
However, rayon filament yarn not only has a lot of yarn breakage in the twisting process due to its low strength, but also has poor workability, and there are many knots in the sewing thread, and these knots are needles during embroidery work. It has the problem of clogging and cutting holes. In addition, since rayon filament yarn shrinks and decreases in strength when wet, the embroidery processed product gets wet in the rain, the embroidery surface is pulled when it becomes wet due to washing, etc. There was also a problem that the appearance of the embroidery product was damaged by cutting.
[0004]
In order to solve such a problem, attempts have been made to use a polyester filament yarn having high strength and little change in physical properties due to wetness. However, the polyester filament yarn has a problem that the gloss is inferior to that of the rayon filament yarn. In order to solve such problems, for example, JP-A-5-125635 proposes using a modified cross-section polyester yarn with a reduced content of inorganic fine particles. Although the improvement in gloss is recognized in the sewing thread by this proposal, the gloss is insufficient because the single fiber fineness is thin, and further, there is a problem in the sewability as an embroidery sewing thread, and cheese dyeing due to heat shrinkage Occasional dyeing spots occurred, and a satisfactory embroidery sewing thread could not be provided.
[0005]
Japanese Patent Laid-Open No. Sho 62-125033 proposes to prevent towel eyes by setting the single fiber fineness of the filaments constituting the sewing thread to a range of 3 to 6 de. With the disclosed sewing thread, the gloss and dyeing processability are not sufficient, and a satisfactory embroidery sewing thread could not be obtained.
[0006]
[Problems to be solved by the invention]
The present invention eliminates the problems of the prior art, and provides an embroidery sewing machine yarn made of a polyester filament yarn that enables an embroidery sewing thread having good dyeability and excellent sewing properties and gloss. It is in.
[0007]
[Means for Solving the Problems]
According to the present invention, the polyester filament yarn is composed of a polyester filament yarn that does not contain inorganic fine particles , and the polyester filament yarn has a triangular cross section having a cross-section irregularity in a range of 1.5 to 2.3, and has a single fiber fineness. An embroidery sewing machine yarn is provided that is in the range of 3.3 to 5.5 denier and has a dry heat shrinkage in the range of 1.5 to 2.8% at a temperature of 150 ° C. Is done.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
As the polyester used for the embroidery sewing machine yarn of the present invention, those obtained by known methods can be used. That is, the polyester here refers to terephthalic acid as the main dicarboxylic acid component, and at least one glycol, preferably at least one alkylene glycol selected from ethylene glycol, trimethylene glycol, tetramethylene glycol, and the like. It consists of polyester as a glycol component. Such a polyester may be modified by copolymerizing and / or blending the third component as necessary.
[0009]
As the polyester containing such a third component, an isophthalic acid component containing a sulfonic acid metal salt, for example, 5-sodium sulfoisophthalic acid or 5-tetrabutylphosphonium sulfoisophthalic acid is used in a known manner. It may be polymerized.
[0010]
The polyester filament yarn used in the present invention needs to be substantially free of inorganic fine particles such as titanium oxide. If the polyester filament yarn contains inorganic fine particles, when it is made into an embroidery sewing thread, it diffuses light and inhibits gloss, so in the present invention that aims at high gloss, it is necessary to contain no inorganic fine particles. is there. Therefore, as the polyester filament yarn used in the present invention, a polyester filament yarn made of polyethylene terephthalate substantially free of inorganic fine particles such as titanium oxide called super bright is most preferably used. However, impurities such as dust attached and contained in the process of manufacturing the embroidery sewing thread yarn may be used.
[0011]
Next, it is important that the polyester filament yarn used in the present invention has a triangular cross section and has a cross section irregularity in the range of 1.5 to 2.3. The triangular cross section preferably has a substantially equilateral triangular cross section. It is well known that a yarn having a cross-sectional shape that forms a flat surface on the side surface of the fiber can obtain high gloss by the regular reflection of light by the flat surface. However, as a yarn having a cross-sectional shape that simply forms a flat surface on the side surface of the fiber, there is a yarn having a flat cross section (a rectangular cross section having an extremely long long side), and this yarn has the highest glossiness. Such flat yarn has anisotropy in the bending rigidity, so that when it is used as a sewing thread, the sewability is lowered and is not suitable for the present invention which aims at high sewability. Further, when the cross-sectional shape is a quadrangle, pentagon, hexagon, etc., the anisotropy of the flexural rigidity is small, and therefore, the deterioration of the sewing property is small, but the plane of the fiber side surface is dispersed (for example, the cross-section is a pentagon) 5 dispersion), the specularly reflected light is dispersed and weakened, and the gloss is lowered.
[0012]
As described above, in the present invention, the cross-section has a triangular shape, and the range of the degree of irregularity of the cross-sectional shape is important from the viewpoint of improving the glossiness. Is a value obtained by dividing the diameter of the circumscribed circle by the diameter of the inscribed circle of the cross-sectional shape, and in a regular triangle formed by a geometric figure, the cross-section deformity is 2, and high gloss and high sewing property by regular reflection Most preferred for the present invention to be obtained.
[0013]
When the cross-sectional shape is a triangle and the cross-sectional deformity is less than 2, the side of the triangle includes a curved portion that swells outward and includes a fiber side surface on which light is diffusely reflected. If the cross section exceeds 2, the side becomes a triangular cross section with different lengths, and the anisotropy of the flexural rigidity is increased. A curved portion is included, and a fiber side surface on which light is collected and diffused is included. The cross section where the specular reflection of light is large and the anisotropy of the bending stiffness is small is preferably as close to an equilateral triangle as possible. However, in the case of a polyester filament that is actually used, the apex of the triangular cross section is rounded. Therefore, even if the side portion is a straight line, the deformity is less than 2. Therefore, the polyester filament yarn used in the present invention has a triangular cross section, and the cross-sectional irregularity is preferably in the range of 1.5 to 2.3, more preferably 1.6 to 1. The range is 9.
[0014]
Next, the single fiber fineness of the polyester filament yarn used in the present invention needs to be in the range of 3.0 to 5.5 denier. When the single fiber fineness is less than 3 deniers, the gloss is insufficient and the sewability is inferior, and the effects of the present invention cannot be obtained. That is, as described above, the plane formed on the side surface of the fiber increases the specular reflection of light and improves the gloss, but the amount of specular reflection (gloss intensity) is It is proportional to the area of the flat part. The larger the single fiber fineness, the wider the single area of the flat part, and in particular, in the case of an embroidery sewing thread that is often used by twisting, the flat part is twisted by the twisted yarn to face a random direction. It is important to widen the single area. Furthermore, when the single fiber fineness is small, the bending rigidity and strength of the single fiber are small, so that the loop forming property at the time of sewing is poor, and sewing troubles such as skipping and single yarn breakage are likely to occur.
[0015]
On the contrary, if the single fiber fineness exceeds 5.5 denier, the bending rigidity becomes too large, and when the embroidery product is made, the fit between the embroidery sewing thread and the fabric deteriorates, and the texture of the embroidery product Becomes unpreferable.
[0016]
Next, the polyester filament yarn used in the present invention needs to have a dry heat shrinkage at a temperature of 150 ° C. in the range of 1.5 to 2.8%. When the dry heat shrinkage rate exceeds 2.8%, when the polyester filament yarn is dyed with cheese, the yarn shrinks, the cheese winding hardness is increased, and the dyeing liquid is poorly passed to generate dyed spots. Let The sewing thread for general sewing has a linear seam, so the stained spots are not noticeable.In the case of the embroidery sewing thread, the pattern is often used on the surface, so the stained spots are easily noticeable and the stained spots can be prevented. It becomes important, and in order to prevent this, the dry heat shrinkage must be 2.8% or less. Further, when the dry heat shrinkage ratio is large, the inner layer yarn is heat-treated in a constant length state, whereas the outer layer yarn is heat-treated in a relaxed state or a contractible state. The outer layer part is not preferable because it causes a difference in physical properties of the yarn.
[0017]
On the other hand, if the dry heat shrinkage is less than 1.5%, the spinning condition becomes severe and the spinning cost becomes high. In addition, the dry heat shrinkage rate as used in the field of this invention is a value obtained by measuring by making processing temperature into 150 degreeC based on JIS-L1013 7.15 (2.1) method.
[0018]
Further, the total fineness, strength, and elongation of the embroidery sewing machine yarn of the present invention are not particularly limited, but the total fineness is preferably in the range of 50 to 150 denier. In particular, those having a total fineness of about 120 denier are most preferable as a raw thread for an embroidery sewing thread. Further, the strength can be exemplified in the range of 3 to 7 g / de, but a strength of about 5.5 g / de is preferable from the viewpoint of sewability and durability of the embroidery product. The elongation is in the range of 16 to 35%, but is preferably about 23 to 28% from the viewpoint of sewability and texture of the embroidery product.
[0019]
[Effects of the Invention]
The raw thread for embroidery sewing thread of the present invention comprises a polyester filament yarn that does not contain inorganic fine particles and has a triangular cross section having an appropriate profile irregularity, and the polyester filament yarn has an appropriate range of single fiber fineness and dry heat shrinkage. Therefore, it is possible to provide an excellent embroidery sewing thread that enables high gloss, is excellent in sewability, and has few dyeing spots and physical property spots at the time of dyeing. All of these characteristics are satisfied by using polyester filament yarn that does not contain inorganic fine particles, and uses polyester filament yarn that satisfies all of the profile irregularity, single fiber fineness, and dry heat shrinkage simultaneously. In particular, it is obtained by making the cross-section irregularity a triangular cross-section in the range of 1.5 to 2.3, thereby obtaining an effect that cannot be obtained with an embroidery sewing thread using a conventional polyester filament thread. It was possible.
[0020]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples. In addition, evaluation of the embroidery sewing thread performed in the examples was based on the following method.
[0021]
(1) Gloss and dyeing spots Each thread was collected from the inner layer, middle layer, and outer layer of the embroidery machine thread dyed cheese obtained in the example, and the yarn was closely wound in parallel on a 5 × 5 cm thick black cardboard. Then, gloss and stained spots were visually evaluated and evaluated.
[0022]
(2) Evaluation of sewability Using the embroidery sewing thread obtained in the example, N was obtained by superposing two commercially available polyester / cotton broad fabrics (mixing ratio: 60/40) on an embroidery sewing machine (manufactured by Barudan). Character-shaped embroidery sewing was carried out 20 times, and the presence or absence of sewing troubles such as stitch skipping and the quality of the obtained sewing products were evaluated.
[0023]
[Example 1]
Polyester made of polyethylene terephthalate containing no inorganic fine particles was melt-spun using a spinneret having 36 Y-shaped holes at a spinning temperature of 293 ° C. and a spinning speed of 1000 m / min, and then a roller at a temperature of 100 ° C. Then, the film is stretched by a two-stage stretching method in which a first stretching of 2.9 times and a second stretching of 1.3 times through a roller of 220 ° C. is performed, followed by a temperature of 200 ° C. and a relaxation rate of 5 After being subjected to a relaxation treatment under the condition of%, it was wound up to obtain an original thread for embroidery sewing thread of 120 denier and 36 filaments (single fiber fineness: 3.3 de). The embroidery sewing thread yarn had a cross section close to a regular triangle with a degree of deformity of 1.8, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
[0024]
Using the embroidery sewing machine yarn, it was twisted in the S direction at 650 T / m to form a single yarn, and the two single yarns were aligned and twisted in the Z direction at 550 T / m to obtain a twisted yarn. The twisted yarn is wound around dyeing cheese (winding amount: 1 kg), subjected to dyeing processing by a conventional method at a temperature of 130 ° C. for 60 minutes, and then an embroidery sewing thread is provided with 3% of a silicone oil based on the yarn weight. Got. The obtained embroidery sewing thread was evaluated by the above method, and the results are shown in Table 1.
[0025]
[Comparative Example 1]
Instead of the spinneret having the Y-shaped hole used in Example 1, a spinneret having a wide slit formed to form the Y-shaped hole (the cross section of the obtained yarn has a triangular side line bulging outward). Except for using a cross section having a curve), the same procedure as in Example 1 was performed to obtain a raw thread for an embroidery sewing thread of 120 denier and 36 filaments (single fiber fineness: 3.3 de). The embroidery sewing thread yarn had a substantially triangular cross section with a deformity of 1.2, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0026]
[Comparative Example 2]
In place of the spinneret having the Y-shaped hole used in Example 1, the spinneret with the narrow width of the slit forming the Y-shaped hole (the cross section of the obtained yarn has a triangular side line recessed inward Except for using a cross section having a curved line, the same procedure as in Example 1 was performed to obtain a raw thread for an embroidery sewing thread of 120 denier and 36 filaments (single fiber fineness: 3.3 de). The embroidery sewing thread yarn had a substantially triangular cross section with a cross section of 2.6, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0027]
[Comparative Example 3]
In place of the spinneret having 36 Y-shaped holes used in Example 1, a spinneret having 48 Y-shaped holes was used except that a spinneret having 48 Y-shaped holes was used. An original thread for an embroidery sewing thread having a fiber fineness of 2.5 de) was obtained. The embroidery sewing thread yarn had a cross section close to a regular triangle with a degree of deformity of 1.8, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0028]
[Comparative Example 4]
In place of the spinneret having 36 Y-shaped holes used in Example 1, a spinneret having 20 Y-shaped holes was used, except that a spinneret having 20 Y-shaped holes was used. An original thread for an embroidery sewing thread having a fiber fineness of 6.0 de) was obtained. The embroidery sewing thread yarn had a cross section close to a regular triangle with a degree of deformity of 1.8, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0029]
[Comparative Example 5]
In Example 1, the relaxation treatment carried out following the stretching was carried out in the same manner as in Example 1 except that the relaxation treatment was carried out under the conditions of a temperature of 180 ° C. and a relaxation rate of 2%, and 120 denier, 36 filaments ( An original yarn for embroidery sewing thread having a single fiber fineness: 3.3 de) was obtained. The raw thread for embroidery sewing thread had a cross section close to a regular triangle with a degree of deformity of 1.8, and the dry heat shrinkage at a temperature of 150 ° C. was 5.0%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0030]
[Comparative Example 6]
Instead of using the polyester composed of polyethylene terephthalate which does not contain inorganic fine particles used in Example 1, it was carried out in the same manner as in Example 1 except that the polyester composed of polyethylene terephthalate blended with 0.07% by weight of titanium oxide was used. Thus, an original thread for embroidery sewing thread of 120 denier and 36 filaments (single fiber fineness: 3.3 de) was obtained. The embroidery sewing thread yarn had a cross section close to a regular triangle with a degree of deformity of 1.8, and the dry heat shrinkage at a temperature of 150 ° C. was 1.8%.
The obtained embroidery sewing thread yarn was subjected to twisting and dyeing in the same manner as in Example 1, and the same oil agent as in Example 1 was applied to obtain an embroidery sewing thread. The obtained embroidery sewing thread was evaluated in the same manner as in Example 1, and the results are also shown in Table 1.
[0031]
[Table 1]
Figure 0003638823
[0032]
As shown in Table 1, the embroidery sewing thread shown in Example 1 was excellent in gloss, had no staining spots, and had no trouble during embroidery sewing. On the other hand, the embroidery sewing thread shown in Comparative Example 1 and Comparative Example 2 is inferior in gloss, and further, the embroidery sewing thread shown in Comparative Example 3 is inferior in gloss. Trouble occurred. In the case of using the embroidery sewing thread shown in Comparative Example 4, the surface of the embroidery product becomes stiff as Gowago, the fit between the fabric and the embroidery sewing thread is poor, and the quality of the embroidery product is lowered. The embroidery sewing thread shown showed dyeing spots, and the embroidery sewing thread shown in Comparative Example 6 was inferior in gloss because the polyester contains titanium oxide.
[0033]
【The invention's effect】
As described above, the embroidery sewing thread using the raw thread for embroidery sewing thread of the present invention shown in the examples is excellent in gloss, has no staining spots, and has excellent sewing properties. On the other hand, the embroidery sewing thread using the raw thread for the embroidery sewing thread according to the comparative example had defects in gloss, dyeing spots, and sewability.

Claims (1)

無機微粒子を含有しないポリエステルフィラメント糸からなり、該ポリエステルフィラメント糸は、その断面異形度が1.5〜2.3の範囲にある三角形状断面を有し、単繊維繊度が3.3〜5.5デニールの範囲にあり、且つ、150℃の温度における乾熱収縮率が1.5〜2.8%の範囲にあることを特徴とする刺しゅうミシン糸用原糸。 The polyester filament yarn is composed of a polyester filament yarn that does not contain inorganic fine particles , and the polyester filament yarn has a triangular cross-section with a profile irregularity in the range of 1.5 to 2.3, and a single fiber fineness of 3.3 to 5. An embroidery sewing machine yarn having a denier in the range of 5 denier and a dry heat shrinkage at a temperature of 150 ° C. in the range of 1.5 to 2.8%.
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