JP3193933B2 - Polyester sewing thread - Google Patents
Polyester sewing threadInfo
- Publication number
- JP3193933B2 JP3193933B2 JP27276892A JP27276892A JP3193933B2 JP 3193933 B2 JP3193933 B2 JP 3193933B2 JP 27276892 A JP27276892 A JP 27276892A JP 27276892 A JP27276892 A JP 27276892A JP 3193933 B2 JP3193933 B2 JP 3193933B2
- Authority
- JP
- Japan
- Prior art keywords
- sewing
- sewing thread
- polyester
- yarn
- thread
- 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
- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、染色性、高速可縫性に
優れ、さらに縫製後においても高強度を維持するポリエ
ステルミシン糸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester sewing thread which is excellent in dyeability and high-speed sewability and maintains high strength even after sewing.
【0002】[0002]
【従来の技術】ミシン糸の特性としては、熱的に寸法安
定性がよいこと、染色性がよいこと、高速可縫性がよい
こと等が要求されている。これらの要求特性を満足する
ために、例えば特公平4−13456号公報には、可縫
性に優れ、縫い目の美しいポリエステルミシン糸とし
て、繊維断面内の複屈折率が繊維外層部の複屈折率より
も高く、高度な結晶配向度を有する繊維が提案されてい
る。また、特開昭61−34218号公報には、紡糸速
度と繊維の固有粘度の相互関係を特定化することによ
り、ミシン糸用原糸の強度低下を抑制し、耐熱性および
高速可縫性を有するポリエステルミシン糸用原糸を得る
方法が提案されている。2. Description of the Related Art Sewing threads are required to have good thermal dimensional stability, good dyeing properties, good high-speed sewability, and the like. In order to satisfy these required characteristics, for example, Japanese Patent Publication No. 4-1456 / 1992 discloses a polyester sewing thread having excellent seamability and a beautiful seam, and the birefringence in the fiber cross section is doubled in the fiber outer layer. Fibers with higher and higher degrees of crystal orientation have been proposed. Japanese Patent Application Laid-Open No. 61-34218 discloses that the correlation between the spinning speed and the intrinsic viscosity of the fiber is specified to suppress a decrease in the strength of the original yarn for the sewing thread, and to improve heat resistance and high-speed sewability. There has been proposed a method of obtaining a raw yarn for polyester sewing thread having the same.
【0003】しかしながら、これらに提案されているミ
シン糸またはミシン用原糸はいずれもポリマ−が高度に
結晶配向しているため、ミシン糸の要求特性の1つであ
る染色性は必ずしも満足しているとは言えない。[0003] However, in all of the proposed sewing threads or sewing thread for sewing machines, the polymer has a high degree of crystal orientation, so that the dyeing property, which is one of the required properties of the sewing thread, is not always satisfied. I can't say that.
【0004】[0004]
【発明が解決しようとする課題】本発明の目的は、優れ
た染色性、高速可縫性および耐熱性を有するポリエステ
ルミシン糸を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a polyester sewing thread having excellent dyeability, high-speed sewability and heat resistance.
【0005】[0005]
【課題を解決するための手段】前記した本発明の目的
は、エチレンテレフタレ−トを主たる繰り返し単位とす
るポリエステル繊維からなり、該ポリエステル繊維の固
有粘度が0.8以上、ガラス転移温度が80℃以下、比
熱が2.0J/g・℃以上、切断強度が6.0g/デニ
−ル以上、および切断伸度が30%以下であることを特
徴とする繊維からなるミシン糸によって達成できる。An object of the present invention is to provide a polyester fiber comprising ethylene terephthalate as a main repeating unit, the polyester fiber having an intrinsic viscosity of at least 0.8 and a glass transition temperature of 80. C. or lower, specific heat of 2.0 J / g.degree. C. or higher, cutting strength of 6.0 g / denier or higher, and cutting elongation of 30% or lower.
【0006】本発明において用いられるポリエステルと
はエチレンテレフタレ−トを主たる繰り返し単位とする
ポリエステルである。好ましくは繰り返し単位の90モ
ル%以上がエチレンテレフタレ−トであって、10モル
%未満が他の成分で共重合されていてもよいポリエステ
ルである。かかる共重合成分として、イソフタル酸、フ
タル酸、ナフタレン−2,6−ジカルボン酸、5−ナト
リウムスルホイソフタル酸等の芳香族ジカルボン酸成
分、アジピン酸、セバシン酸等の脂肪族ジカルボン酸成
分、p−オキシ安息香酸、p−オキシエトキシ安息香酸
等のオキシカルボン酸成分、トリメリット酸、ピロメリ
ット酸等の多価カルボン酸成分、ジエチレングリコ−
ル、テトラメチレングリコ−ル、ヘキサメチレングリコ
−ル、プロピレングリコ−ル、ネオペンチルグリコ−
ル、1,4−シクロヘキサンジメタノ−ル等のジオ−ル
成分が挙げられる。The polyester used in the present invention is a polyester containing ethylene terephthalate as a main repeating unit. Preferably, 90 mol% or more of the repeating unit is ethylene terephthalate, and less than 10 mol% is a polyester which may be copolymerized with other components. Such copolymerization components include aromatic dicarboxylic acid components such as isophthalic acid, phthalic acid, naphthalene-2,6-dicarboxylic acid, and 5-sodium sulfoisophthalic acid; aliphatic dicarboxylic acid components such as adipic acid and sebacic acid; Oxycarboxylic acid components such as oxybenzoic acid and p-oxyethoxybenzoic acid; polyvalent carboxylic acid components such as trimellitic acid and pyromellitic acid;
, Tetramethylene glycol, hexamethylene glycol, propylene glycol, neopentyl glycol
And diol components such as 1,4-cyclohexanedimethanol.
【0007】本発明のミシン糸の原糸であるポリエステ
ル繊維は以下の物性を満足することが必要である。ま
ず、固有粘度は0.8以上が必要である。0.8未満で
は、ミシン糸としての可縫性および強度が劣る。通常、
繊維をミシン糸にするまでの工程、たとえば下撚、上撚
等の撚糸工程、または染色工程において強度の低下は著
しくなる。したがって、固有粘度の上限についてはとく
に限定されないが、原糸段階では固有粘度は高い方がよ
く、0.9〜1.1の範囲内であることが好ましい。こ
のような固有粘度を有する繊維を得るためにはポリエス
テルの固有粘度を1.0〜1.2にすることが好まし
い。The polyester fiber which is the raw thread of the sewing thread of the present invention must satisfy the following physical properties. First, the intrinsic viscosity needs to be 0.8 or more. If it is less than 0.8, the sewability and strength of the sewing thread will be poor. Normal,
In the process of converting the fiber into a sewing thread, for example, in the process of twisting such as priming and plying, or in the dyeing process, the strength is significantly reduced. Therefore, the upper limit of the intrinsic viscosity is not particularly limited, but the intrinsic viscosity is preferably higher at the stage of the raw yarn, and is preferably in the range of 0.9 to 1.1. In order to obtain a fiber having such an intrinsic viscosity, it is preferable that the intrinsic viscosity of the polyester be 1.0 to 1.2.
【0008】また、ガラス転移温度(以下、Tgと称
す)は80℃以下であることが必要である。Tgが80
℃を越えると、ミシン糸としての染色性が劣る。また、
チ−ズ染色を実施した場合にチ−ズの内層と外層とで染
色斑が生じやすくなる。ミシン糸としての染色性をより
高めるためには、原糸段階でのTgは75℃以下である
ことが好ましい。チ−ズ染色を施す場合には上記のよう
な染色斑を解消するために、沸水収縮率が2.5%以
下、好ましくは1.5〜2.0%の範囲の原糸を用いる
のが望ましい。Further, the glass transition temperature (hereinafter referred to as Tg) needs to be 80 ° C. or less. Tg is 80
If the temperature exceeds ℃, the dyeability of the sewing thread is inferior. Also,
When the teeth are dyed, stain spots are likely to occur between the inner layer and the outer layer of the cheese. In order to further enhance the dyeability of the sewing thread, it is preferable that the Tg at the raw yarn stage be 75 ° C. or less. In the case of performing the cheese dyeing, in order to eliminate the above-mentioned stain spots, it is preferable to use a yarn having a boiling water shrinkage of 2.5% or less, preferably 1.5 to 2.0%. desirable.
【0009】ポリエステル繊維の比熱は2.0J/g・
℃以上であることが必要である。2.0J/g・℃未満
では、布とミシン針との摩擦によって発生する熱の作用
によりミシン糸の強度が縫製前後で大きく低下し、縫製
途中にミシン糸が破断する問題がある。したがって、ミ
シン糸の縫製前後での強度の低下を抑制するため、すな
わちミシン糸の耐熱性を改良するためには、原糸段階で
の比熱は2.1J/g・℃以上であることが好ましい。The specific heat of the polyester fiber is 2.0 J / g ·
It is necessary to be higher than or equal to ° C. If it is less than 2.0 J / g · ° C., there is a problem that the strength of the sewing thread largely decreases before and after sewing due to the action of heat generated by friction between the cloth and the sewing needle, and the sewing thread breaks during sewing. Therefore, in order to suppress a decrease in strength before and after sewing the sewing thread, that is, to improve the heat resistance of the sewing thread, it is preferable that the specific heat at the raw yarn stage be 2.1 J / g · ° C. or more. .
【0010】ポリエステル繊維の強度は6g/デニ−ル
以上が必要である。6g/デニ−ル未満では、縫製途中
でのミシンの高速回転化に伴う衝撃・疲労といった力学
的劣化、摩擦熱等の作用により、強度が著しく低下し、
ミシン糸が破断することが生じる。したがって、原糸段
階では強度は高いほうがよく、7g/デニ−ル以上が好
ましい。The strength of the polyester fiber is required to be 6 g / denier or more. If it is less than 6 g / denier, the strength is significantly reduced due to mechanical deterioration such as impact and fatigue due to high speed rotation of the sewing machine during sewing, action of frictional heat, and the like,
The sewing thread breaks. Therefore, the strength is preferably higher at the raw yarn stage, and is preferably 7 g / denier or more.
【0011】さらにポリエステル繊維の伸度は30%以
下が必要である。30%を越えると、繊維のヤング率が
低くなるため、ミシン糸にコシがなくなる。また、シ−
ムパッカリングや縫製時の目飛びの原因ともなる。好ま
しくは、伸度は15〜20%の範囲である。Further, the elongation of the polyester fiber must be 30% or less. If it exceeds 30%, the Young's modulus of the fiber will be low, and the sewing thread will not be stiff. In addition,
It may also cause skipping during mucking and sewing. Preferably, the elongation is in the range of 15-20%.
【0012】上記のような諸物性を有するポリエステル
としては、繰り返し単位の90モル%以上がエチレンテ
レフタレ−トであることが好ましいことは述べたが、ミ
シン糸の染色性、可縫性をより改善するためには、該ポ
リエステルにガラス転移点降下剤(以下、Tg降下剤と
称す)のみ、あるいはTg降下剤と固体微粒子を併用し
て添加することが好ましい。It has been stated that, as the polyester having the above-mentioned physical properties, it is preferable that at least 90 mol% of the repeating units be ethylene terephthalate. For improvement, it is preferable to add only a glass transition point depressant (hereinafter, referred to as a Tg depressant) or a combination of a Tg depressant and solid fine particles to the polyester.
【0013】Tg降下剤とは、本発明で用いられるポリ
エステル中にTg降下剤を2重量%添加した時に、Tg
降下剤を添加しない時に比べて、該ポリエステルのガラ
ス転移点温度を2℃以上降下させる性質を有する添加剤
のことをいう。ポリエステルのガラス転移点温度は、示
差走査熱量計等により容易に測定することができる。The Tg lowering agent is defined as a Tg lowering agent when 2% by weight of the Tg lowering agent is added to the polyester used in the present invention.
An additive having the property of lowering the glass transition temperature of the polyester by 2 ° C. or more as compared with the case where no depressant is added. The glass transition temperature of the polyester can be easily measured by a differential scanning calorimeter or the like.
【0014】Tg降下剤としては上記の性質を有するも
のであればいずれのものも使用可能ではあるが、下記一
般式(I);As the Tg lowering agent, any one having the above properties can be used, but the following general formula (I):
【0015】 R↑1O−X−OR↑2 (I) (式中Xは芳香族基、R↑1およびR↑2は炭素数6〜
18のアルキル基またはアリ−ルアルキル基を表す)で
表される化合物の少なくとも1種を使用するのが好まし
い。R ↑ 1O—X—OR ↑ 2 (I) (wherein X is an aromatic group, and R ↑ 1 and R ↑ 2 have 6 to 6 carbon atoms.
(Representing an alkyl group or arylalkyl group of 18).
【0016】一般式(I)で示される化合物において、
芳香族基Xの好ましい例としては下記の式(II)〜
(IX)で表される2価の基を挙げることができる。In the compound represented by the general formula (I),
Preferred examples of the aromatic group X include the following formulas (II) to (II).
And a divalent group represented by (IX).
【0017】[0017]
【化1】 Embedded image
【0018】[0018]
【化2】 Embedded image
【0019】[0019]
【化3】 Embedded image
【0020】[0020]
【化4】 Embedded image
【0021】[0021]
【化5】 Embedded image
【0022】[0022]
【化6】 Embedded image
【0023】[0023]
【化7】 Embedded image
【0024】[0024]
【化8】 Embedded image
【0025】そして、本発明で使用するのに好適なTg
降下剤としては、例えば下記の一般式(X)〜(XII
I)で表される化合物を挙げることができる。Further, Tg suitable for use in the present invention
As the depressant, for example, the following general formulas (X) to (XII)
The compound represented by I) can be mentioned.
【0026】[0026]
【化9】 Embedded image
【0027】[0027]
【化10】 Embedded image
【0028】[0028]
【化11】 Embedded image
【0029】[0029]
【化12】 Embedded image
【0030】Tg降下剤の添加量は、ポリエステルの重
量に対して0.5〜10重量%の範囲であることが好ま
しい。Tg降下剤の添加量が0.5重量%未満の場合、
染色性向上の効果が発現せず、一方、10重量%を越え
る場合、ミシン糸の可縫性が低下するので好ましくな
い。さらに好ましくは、1〜5重量%の範囲である。The addition amount of the Tg lowering agent is preferably in the range of 0.5 to 10% by weight based on the weight of the polyester. When the addition amount of the Tg lowering agent is less than 0.5% by weight,
If the effect of improving the dyeability is not exhibited, and if it exceeds 10% by weight, the sewability of the sewing thread is undesirably reduced. More preferably, it is in the range of 1 to 5% by weight.
【0031】また、固体微粒子としては、平均粒径が1
5〜70mμ、より好ましくは30〜50mμの範囲の
無機微粒子が望ましい。固体微粒子の粒径が15mμ未
満の場合、得られる繊維の摩擦耐久性が不足し、一方、
70mμを越える場合、繊維がフィブリル化しやすくな
り好ましくない。固体微粒子はアルミコ−ト、アルキル
基導入等によりその表面が改質されていてもよい。本発
明で使用する固体微粒子として、シリカ、アルミナ、カ
オリン、炭酸カルシウム、酸化チタン等が挙げられる。
とくに透明性、カチオン染料特有の色の鮮明性を繊維に
付与するためには平均粒径が15〜70mμで屈折率が
1.65以下のシリカが好ましい。The solid fine particles have an average particle size of 1
Inorganic fine particles in the range of 5 to 70 mμ, more preferably 30 to 50 mμ, are desirable. When the particle diameter of the solid fine particles is less than 15 mμ, the friction durability of the obtained fiber is insufficient, while
If it exceeds 70 μm, the fibers tend to be fibrillated, which is not preferable. The surface of the solid fine particles may be modified by introducing an aluminum coat or an alkyl group. Examples of the solid fine particles used in the present invention include silica, alumina, kaolin, calcium carbonate, and titanium oxide.
In particular, silica having an average particle diameter of 15 to 70 mμ and a refractive index of 1.65 or less is preferred for imparting transparency and the distinctive color clarity of the cationic dye to the fiber.
【0032】固体微粒子の添加量は、ポリエステルの重
量に対して0.1〜3.0重量%の範囲であることが好
ましい。固体微粒子の添加量が0.1重量%未満の場
合、ミシン糸としての高速可縫性が劣り、一方、3重量
%を越える場合、固体微粒子によるガイド摩耗が生じ好
ましくない。さらに好ましくは、0.3〜2.0重量%
の範囲である。The amount of the solid fine particles to be added is preferably in the range of 0.1 to 3.0% by weight based on the weight of the polyester. If the added amount of the solid fine particles is less than 0.1% by weight, the high-speed sewability as a sewing thread is inferior. More preferably, 0.3 to 2.0% by weight
Range.
【0033】Tg降下剤、固体微粒子のポリエステルへ
の添加時期および添加方法はとくに限定されない。例え
ば、Tg降下剤および固体微粒子は同時に添加しても、
また全く別の時点で添加してもよい。また、Tg降下剤
および固体微粒子は、上記ポリエステルの重合前または
重合後の適当な時点で添加してもよいし、あるいは溶融
紡糸時に添加してもよい。The timing and method of adding the Tg lowering agent and the solid fine particles to the polyester are not particularly limited. For example, even if the Tg lowering agent and the solid fine particles are added simultaneously,
Also, they may be added at completely different times. Further, the Tg lowering agent and the solid fine particles may be added at an appropriate time before or after the polymerization of the polyester, or may be added during melt spinning.
【0034】本発明のポリエステル繊維は、一般的な溶
融紡糸法によって容易に得ることができ、得られた紡糸
原糸は、通常の方法で延伸することができる。例えば、
加熱ロ−ラでポリエステルのガラス転移温度以上である
70〜95℃の範囲で予熱後、捲き取りロ−ラの速度に
応じる延伸倍率である3.0〜5.0倍の範囲に延伸
し、ポリエステルの結晶化温度以上である150〜18
0℃の範囲で熱処理すればよい。また、スピンドロ−の
ような、紡糸延伸を直結した方法でもさしつかえない。The polyester fiber of the present invention can be easily obtained by a general melt-spinning method, and the obtained spun yarn can be drawn by an ordinary method. For example,
After preheating with a heating roller in the range of 70 to 95 ° C. which is equal to or higher than the glass transition temperature of the polyester, stretching is performed in a range of 3.0 to 5.0 times, which is a stretching ratio according to the speed of the winding roller, 150 to 18 which is higher than the crystallization temperature of the polyester
What is necessary is just to heat-treat in the range of 0 degreeC. Further, a method in which spinning and drawing are directly connected, such as a spin draw, may be used.
【0035】[0035]
【作用】エチレンテレフタレ−トを主たる繰り返し単位
とするポリエステル繊維にTg降下剤あるいはTg降下
剤および固体微粒子を添加すると、染色性および高速可
縫性が同時に満足でき得る。Tg降下剤と固体微粒子を
併用することにより、ポリエステルの比熱が上昇し、従
来のポリエステル繊維からなるミシン糸ならば容易に溶
断する高速縫製条件においても、ポリエステル繊維の比
熱が高いためにミシン糸の糸温度が上昇しにくく、糸が
溶断しにくいのである。When a Tg-lowering agent or a Tg-lowering agent and solid fine particles are added to a polyester fiber containing ethylene terephthalate as a main repeating unit, dyeability and high-speed sewability can be simultaneously satisfied. By using a Tg depressant and solid fine particles together, the specific heat of the polyester increases, and even under high-speed sewing conditions where a conventional sewing thread made of polyester fiber is easily cut off, the specific heat of the polyester fiber is high because the specific heat of the polyester fiber is high. It is difficult for the yarn temperature to rise, and for the yarn to hardly melt.
【0036】[0036]
【実施例】以下 、本発明を実施例により具体的に説明
するが、本発明はそれらにより何等限定されるものでは
ない。なお、実施例中の各物性は以下の方法により測定
し求めた。 (1)繊維の固有粘度([η]) 繊維をフェノ−ル/テトラクロロエタン(重量比1:
1)の混合溶媒中に溶解して、30℃で測定した。 (2)繊維のガラス転移温度 Tg(℃) 示差走査熱量計(DSC:TA3000、メトラ−社
製)を用いて、試料10mgを窒素雰囲気中、昇温速度
20℃/分で50℃から300℃まで昇温し、3分間放
置後、室温まで急冷し、再度窒素雰囲気中、昇温速度1
0℃/分で300℃まで昇温してDSC曲線より求め
た。 (3)繊維の比熱(J/g・℃) DSCを用いて、試料10mgを窒素雰囲気中、昇温速
度10℃/分で50℃から280℃まで昇温し、230
℃における比熱を求めた。 (4)繊維の切断強度(g/d)、伸度(%) JIS L 1013に準拠して測定し求めた。 (5)沸水収縮率(%) 1周1mの10周巻きのカセを0.1g/デニ−ル荷重
下で原長(cm)を測定した後、沸騰水中で15分間処
理し、0.1g/デニ−ル荷重下で処理後の長さ(c
m)を測定し、次式で算出した。 沸水収縮率(%)=[(原長−処理後の長さ)/原長]
×100 (6)可縫性 ポリエステル繊維と綿からなる混紡ツイル6200Sを
5枚重ねて縫製生地とし、高速ミシンとしてユニオンス
ペシャル63400A型(ミシン針は14番)を使用し
た。ミシンの回針数3750rpmにて縫製テストを行
ない、糸が切れるまでの縫製長を測定した。縫製長が長
い程、可縫性がよいことを示す。 (7)染色性 ポリエステル延伸糸を筒編にし、染料としてイ−ストマ
ンポリエステルネイビ−ブル−を用いて、3%owfの
条件で沸騰水中で染色した。染色後熱固定し、濃淡色差
を判別した。判定は5段階で行ない、濃く染まっている
程高い値とした。なお、染色は同浴で行なった。EXAMPLES The present invention will be described below in more detail with reference to examples, but the present invention is not limited thereto. In addition, each physical property in an Example was measured and calculated | required by the following method. (1) Intrinsic viscosity of fiber ([η]) The fiber was prepared by mixing phenol / tetrachloroethane (weight ratio 1:
It melt | dissolved in the mixed solvent of 1), and measured at 30 degreeC. (2) Glass transition temperature of fiber Tg (° C.) Using a differential scanning calorimeter (DSC: TA3000, manufactured by Metra Corporation), 10 mg of a sample was heated from 50 ° C. to 300 ° C. at a rate of 20 ° C./min in a nitrogen atmosphere. And then left for 3 minutes, rapidly cooled to room temperature, again in a nitrogen atmosphere, at a heating rate of 1
The temperature was raised to 300 ° C. at 0 ° C./min and determined from the DSC curve. (3) Specific heat of fiber (J / g · ° C.) Using a DSC, 10 mg of a sample was heated from 50 ° C. to 280 ° C. in a nitrogen atmosphere at a rate of 10 ° C./min.
The specific heat at ° C was determined. (4) Fiber breaking strength (g / d) and elongation (%) Measured and determined in accordance with JIS L 1013. (5) Shrinkage rate of boiling water (%) After measuring the original length (cm) of a 10-wound wrap around 1 m per lap under a load of 0.1 g / denier, it was treated in boiling water for 15 minutes to obtain 0.1 g. / Length after treatment under denier load (c
m) was measured and calculated by the following equation. Boiling water shrinkage (%) = [(Original length-Length after treatment) / Original length]
× 100 (6) Sewability Five blended twill 6200S made of polyester fiber and cotton were stacked to form a sewing fabric, and Union Special 63400A type (sewing machine needle No. 14) was used as a high-speed sewing machine. A sewing test was performed at 3750 rpm of the number of needles of the sewing machine, and the sewing length until the thread was cut was measured. The longer the sewing length, the better the sewability. (7) Dyeing properties The drawn polyester yarn was knitted into a tube, and dyed in boiling water at 3% owf using Eastman polyester navable as a dye. After the staining, the cells were heat-fixed and the color difference was determined. The judgment was made in five stages, and the higher the value, the higher the value. The dyeing was performed in the same bath.
【0037】実施例1 一般式(XII)で示されるTg降下剤を2重量%、平
均粒径30mμのシリカを1重量%含有した、[η]=
0.98のポリエチレンテレフタレ−トを紡糸速度13
00m/分で溶融紡糸、延伸を行ない、70デニ−ル2
4フィラメントのミシン糸用原糸を得た。得られた原糸
に、上撚、下撚をかけ3本合糸して130℃で染色し
た。次いで得られたミシン糸の可縫性のテストを行なっ
た。ミシン用原糸およびミシン糸の各物性を測定し、結
果を表1に示す。Example 1 [η] = 2% by weight of a Tg depressant represented by the general formula (XII) and 1% by weight of silica having an average particle size of 30 μm
Polyethylene terephthalate of 0.98 has a spinning speed of 13
Melt spinning and stretching at 00 m / min, 70 denier 2
A 4-filament raw yarn for a sewing thread was obtained. The obtained raw yarn was twisted and ply-twisted to form three yarns, and dyed at 130 ° C. Then, the sewing thread obtained was tested for sewability. The physical properties of the original thread for sewing and the sewing thread were measured, and the results are shown in Table 1.
【0038】実施例2 一般式(XII)で示されるTg降下剤を2重量%含有
した、[η]=1.20のポリエチレンテレフタレ−ト
を紡糸速度1000m/分で溶融紡糸、延伸を行ない、
70デニ−ル24フィラメントのミシン糸用原糸を得
た。得られた原糸に、上撚、下撚をかけ3本合糸して1
30℃で染色した。次いで得られたミシン糸の可縫性の
テストを行なった。ミシン用原糸およびミシン糸の各物
性を測定し、結果を表1に示す。Example 2 Polyethylene terephthalate of [η] = 1.20 containing 2% by weight of a Tg lowering agent represented by the general formula (XII) was melt-spun and drawn at a spinning speed of 1000 m / min. ,
A 70 denier 24 filament raw yarn was obtained. The obtained raw yarn is twisted and plied three times to form a single yarn.
Stained at 30 ° C. Then, the sewing thread obtained was tested for sewability. The physical properties of the original thread for sewing and the sewing thread were measured, and the results are shown in Table 1.
【0039】比較例1 実施例1において、Tg降下剤を添加しない以外は全く
同様にしてミシン用原糸を得、次いで得られた原糸に、
上撚、下撚をかけ3本合糸して130℃で染色した。次
いで得られたミシン糸の可縫性のテストを行なった。ミ
シン用原糸およびミシン糸の各物性を測定し、結果を表
1に示す。実施例1で得られた原糸に比較して、原糸の
固有粘度は同じではあるが、Tgが高く、比熱が小さい
ため、ミシン糸としての可縫性だけではなく染色性も大
きく劣っていた。Comparative Example 1 A yarn for sewing was obtained in the same manner as in Example 1 except that no Tg-lowering agent was added.
Three twisted yarns were twisted and twisted and dyed at 130 ° C. Then, the sewing thread obtained was tested for sewability. The physical properties of the original thread for sewing and the sewing thread were measured, and the results are shown in Table 1. Compared to the yarn obtained in Example 1, the yarn has the same intrinsic viscosity, but has a high Tg and a low specific heat, so that not only the sewing property but also the dyeing properties of the sewing thread are significantly inferior. Was.
【0040】比較例2 実施例1において、固体微粒子を添加しない以外は全く
同様にしてミシン用原糸を得、次いで得られた原糸に、
上撚、下撚をかけ3本合糸して130℃で染色した。次
いで得られたミシン糸の可縫性のテストを行なった。ミ
シン用原糸およびミシン糸の各物性を測定し、結果を表
1に示す。実施例2で得られた原糸に比較して、原糸の
固有粘度が小さくなると同時に比熱も小さくなり、ミシ
ン糸としての可縫性が大きく劣っていた。Comparative Example 2 A yarn for sewing was obtained in the same manner as in Example 1 except that solid fine particles were not added.
Three twisted yarns were twisted and twisted and dyed at 130 ° C. Then, the sewing thread obtained was tested for sewability. The physical properties of the original thread for sewing and the sewing thread were measured, and the results are shown in Table 1. Compared with the original yarn obtained in Example 2, the intrinsic viscosity of the original yarn became smaller and the specific heat became smaller, and the sewability as a sewing thread was significantly inferior.
【0041】比較例3 実施例1において、Tg降下剤および固体微粒子を添加
しない以外は全く同様にしてミシン用原糸を得、次いで
得られた原糸に、上撚、下撚をかけ3本合糸して130
℃で染色した。次いで得られたミシン糸の可縫性のテス
トを行なった。ミシン用原糸およびミシン糸の各物性を
測定し、結果を表1に示す。実施例1で得られた原糸に
比較して、原糸の固有粘度は同じではあるが、Tgが高
く、比熱が小さいため、ミシン糸としての可縫性だけで
はなく染色性も劣っていた。Comparative Example 3 A raw yarn for a sewing machine was obtained in exactly the same manner as in Example 1 except that the Tg depressant and the solid fine particles were not added. 130
Stained at ° C. Then, the sewing thread obtained was tested for sewability. The physical properties of the original thread for sewing and the sewing thread were measured, and the results are shown in Table 1. Compared with the yarn obtained in Example 1, although the yarn has the same intrinsic viscosity, the Tg is high and the specific heat is small, so that not only the sewing property but also the dyeability of the sewing thread were inferior. .
【0042】[0042]
【表1】 [Table 1]
【0043】[0043]
【発明の効果】本発明において得られるミシン糸は、染
色性、高速可縫性に優れ、縫製後も強度の低下がなく、
工業的に利用価値の高いものである。The sewing thread obtained in the present invention is excellent in dyeability and high-speed sewability, and does not decrease in strength even after sewing.
It is of high industrial value.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−34218(JP,A) 特開 平4−228612(JP,A) 特開 平2−210037(JP,A) 特開 昭63−315633(JP,A) 特開 平3−124876(JP,A) 特開 昭59−211638(JP,A) (58)調査した分野(Int.Cl.7,DB名) D02G 3/00 - 3/46 D01F 6/62 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-34218 (JP, A) JP-A-4-228612 (JP, A) JP-A-2-210037 (JP, A) JP-A 63-342 315633 (JP, A) JP-A-3-124876 (JP, A) JP-A-59-211638 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) D02G 3/00-3 / 46 D01F 6/62
Claims (1)
単位とするポリエステル繊維からなり、該繊維の固有粘
度が0.8以上、ガラス転移温度が80℃以下、比熱が
2.0J/g・℃以上、切断強度が6.0g/デニ−ル
以上、および切断伸度が30%以下であるポリエスエテ
ル繊維からなるミシン糸。1. A polyester fiber comprising ethylene terephthalate as a main repeating unit, having an intrinsic viscosity of 0.8 or more, a glass transition temperature of 80 ° C. or less, and a specific heat of 2.0 J / g · ° C. or more. A sewing thread made of polyester fiber having a cutting strength of not less than 6.0 g / denier and a cutting elongation of not more than 30%.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27276892A JP3193933B2 (en) | 1992-10-12 | 1992-10-12 | Polyester sewing thread |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27276892A JP3193933B2 (en) | 1992-10-12 | 1992-10-12 | Polyester sewing thread |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06123035A JPH06123035A (en) | 1994-05-06 |
JP3193933B2 true JP3193933B2 (en) | 2001-07-30 |
Family
ID=17518473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27276892A Expired - Fee Related JP3193933B2 (en) | 1992-10-12 | 1992-10-12 | Polyester sewing thread |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3193933B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1712584B (en) * | 2004-06-24 | 2011-04-13 | 里特机械公司 | Gas flow spinning cup |
-
1992
- 1992-10-12 JP JP27276892A patent/JP3193933B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1712584B (en) * | 2004-06-24 | 2011-04-13 | 里特机械公司 | Gas flow spinning cup |
Also Published As
Publication number | Publication date |
---|---|
JPH06123035A (en) | 1994-05-06 |
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