JP2844680B2 - Different fineness / different shrinkage mixed fiber and method for producing the same - Google Patents

Different fineness / different shrinkage mixed fiber and method for producing the same

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Publication number
JP2844680B2
JP2844680B2 JP15855689A JP15855689A JP2844680B2 JP 2844680 B2 JP2844680 B2 JP 2844680B2 JP 15855689 A JP15855689 A JP 15855689A JP 15855689 A JP15855689 A JP 15855689A JP 2844680 B2 JP2844680 B2 JP 2844680B2
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Japan
Prior art keywords
yarn
shrinkage
fineness
difference
mixed fiber
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JP15855689A
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Japanese (ja)
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JPH0327140A (en
Inventor
良司 中村
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東洋紡績株式会社
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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、風合にすぐれたシルキー調ポリエステル糸
に関し、より絹に近い触感と風合を有するポリエステル
系混繊糸とその製造方法に関するものである。
Description: FIELD OF THE INVENTION The present invention relates to a silky polyester yarn having an excellent feel, a polyester-based mixed fiber having a feel and feel closer to silk, and a method for producing the same. It is.
(従来の技術) 絹様のふくらみを付与する手段としては、特公昭44−
18933号公報にみられる様に紡糸延伸時の熱覆歴差を利
用した収縮率差を付与する方法や特開昭50−24529号公
報に開示されているような、ポリマー組成差、固有粘度
差、吐出孔径差を利用した収縮率差を利用する方法等が
ありこれらを布帛とした後、アルカリ減量加工する方法
との複合により絹様の風合を得る技術がある。また安価
に異収縮差を有する繊維を得る技術として特公昭61−22
047号公報がある。
(Conventional technology) As means for imparting silk-like swelling,
A method of imparting a difference in shrinkage using a difference in thermal history during spinning and drawing as disclosed in JP-A-18933 and JP-A-50-24529, such as a polymer composition difference and an intrinsic viscosity difference There is a method of utilizing a difference in shrinkage ratio using a difference in discharge hole diameter. There is a technique of obtaining a silky feeling by combining these with a fabric and then performing a method of reducing the amount of alkali. As a technology for obtaining fibers having different shrinkage differences at low cost, Japanese Patent Publication No. Sho 61-22
No. 047 is known.
(発明が解決しようとする課題) しかしながら前記従来の技術は2〜3成分の異収縮成
分の混繊糸であり、絹のもつ1本1本の繊維間で糸長差
がある布帛構造とは大きな差があり、風合的に微妙な差
がある。またこれらの方法は、紡糸および/又は延伸の
設備が複雑なことや、生産性が低いために製造コストが
一般糸より高くなる欠点を有している。
(Problems to be Solved by the Invention) However, the above-mentioned conventional technique is a mixed fiber of different shrinkage components of two or three components, and there is a fabric structure in which there is a yarn length difference between individual fibers of silk. There is a big difference, and there is a subtle difference in the feeling. In addition, these methods have drawbacks in that the equipment for spinning and / or drawing is complicated and the production cost is higher than that of ordinary yarns due to low productivity.
コスト的なデメリットを改善する方法として高速紡糸
とダイレクトドロー方式を併用した方法が特公昭61−22
047号公報に提案されている。
As a method to improve the cost disadvantage, a method using high-speed spinning and direct draw system in combination is the Japanese Patent Publication No. 61-22.
No. 047 has been proposed.
しかしながらこの方法は配向結晶化の差を利用した方
法であり、低収縮糸と高収縮糸の延伸応力に大きな差が
あるため得られた延伸糸はループやタルミが生じ、後工
程の通過性に大きな問題をもっている。これらを改善す
るため延伸倍率を下げるとループやタルミを減少し得る
ものの原糸の収縮応力が低下し、布帛中の繊維間の拘束
力で糸長差が発現せず充分なふくらみ効果が得られない
欠点を有している。
However, this method is a method utilizing the difference in oriented crystallization, and there is a large difference in the drawing stress between the low shrinkage yarn and the high shrinkage yarn, so that the obtained drawn yarn has loops and lumps, which results in poor passability in subsequent processes. I have a big problem. Lowering the draw ratio to improve these can reduce loops and lumps, but reduces the shrinkage stress of the original yarn, and a sufficient swelling effect is obtained without a difference in yarn length due to the binding force between the fibers in the fabric. Has no shortcomings.
この発明は、ループやたるみが生じない混繊糸で、特
に熱収縮応力が0.25g/d以上、好ましくは0.28g/d以上、
特に0.3g/d以上と従来の混繊糸に比べて大きく、その最
大収縮応力の発生温度が100℃より低い、60〜80℃にな
るように形成されているので布帛とした場合、繊維間の
拘束力による糸長差の発現が阻害されることなく充分な
ふくらみ効果が発現するといった新規なタイプの多成分
異収縮混繊糸と該混繊糸を安定的に高い生産性をもって
製造する方法を提供するものである。
The present invention is a multi-filament yarn that does not cause loops or sagging, particularly heat shrinkage stress of 0.25 g / d or more, preferably 0.28 g / d or more,
In particular, 0.3 g / d or more, which is larger than that of the conventional mixed fiber, and the temperature at which the maximum shrinkage stress is generated is lower than 100 ° C. Novel type of multi-component heterogeneous shrinkage mixed yarn, which exhibits a sufficient swelling effect without inhibiting the expression of yarn length difference due to binding force of the yarn, and a method for stably producing the mixed yarn with high productivity Is provided.
(課題を解決するための手段) 上記課題を解決することのできた本発明は、 (1) 互いに収縮率差を有する少なくとも4群以上の
糸条群よりなる異収縮混繊糸であり、該糸条群の群間に
おいて、最も太い単糸の群の単糸繊度が3〜5デニール
であり、最も細い単糸の群の単糸繊度が0.3〜1.5デニー
ルであり、該混繊糸のトータル糸の乾熱収縮応力が0.25
g/d以上、且つその最大収縮応力発生温度が65〜80℃で
あり、該混繊糸を構成する各フィラメントの断面形状
は、横断面における外接円と内接円の直径比で規定する
異形度が1.6以上であることを特徴とするポリエステル
系異繊度異収縮混繊糸。
(Means for Solving the Problems) The present invention which can solve the above-mentioned problems is: (1) a hetero-shrinkage mixed fiber yarn comprising at least four or more yarn groups having mutually different shrinkage rates; Among the groups of the strip group, the single yarn fineness of the group of the thickest single yarn is 3 to 5 denier, the single yarn fineness of the group of the thinnest single yarn is 0.3 to 1.5 denier, and the total yarn of the mixed fiber is Has a dry heat shrinkage stress of 0.25
g / d or more, and its maximum shrinkage stress generation temperature is 65 to 80 ° C., and the cross-sectional shape of each filament constituting the mixed fiber is an irregular shape defined by a diameter ratio of a circumscribed circle and an inscribed circle in a cross section. A polyester-based heterogeneous shrinkage mixed fiber yarn having a degree of 1.6 or more.
(2) 外接円と内接円の直径比で規定する異形度が1.
6以上の断面形状を有するフィラメント製造用の紡糸口
金であって、形状、寸法を異にするスリット組合せ型の
紡糸孔群を4群以上有する紡糸口金を用いて、ポリエス
テル系ポリマーを溶融吐出し、紡糸口金直下50mm以内で
冷却風により冷却固化し、5000〜6000m/分の引取速度で
引取り、一旦巻き取った後、或いは一旦巻き取ることな
く引き続いて85〜120℃で予熱した後1.1〜1.2倍の延伸
倍率で延伸することを特徴とするポリエステル系異収縮
混繊糸の製造方法である。
(2) The degree of irregularity defined by the diameter ratio of the circumscribed circle and the inscribed circle is 1.
A spinneret for manufacturing a filament having a cross-sectional shape of 6 or more, using a spinneret having four or more groups of slit combination type spinning holes having different shapes and dimensions, melt-discharging the polyester-based polymer, Cooled and solidified by cooling air within 50 mm directly below the spinneret, taken up at a take-up speed of 5000 to 6000 m / min, and once pre-heated at 85 to 120 ° C after winding or once without winding, 1.1 to 1.2 This is a method for producing a polyester-based different shrinkage mixed fiber yarn, characterized in that the yarn is drawn at a draw ratio of 2 times.
本発明の第1の要件は、群間における平均繊度の最大
繊度が3〜5デニールで最小繊度が0.3〜1.5デニールで
あることが必要である。第1図は本発明繊維の乾熱160
℃収縮率の紡糸速度依存性を示す。本発明糸の利用分野
より繊維の平均単糸デニールは1.5〜2デニールが適当
である。本発明の糸はかかる平均単糸1.5〜2デニール
を中心に紡糸時にループ、タルミをなくすためには最大
単糸繊度のデニールは5デニールで、最少延伸糸の単糸
繊度は0.3デニールが限界であり微細構造に起因する収
縮差を発現するためには最大単糸繊度が3デニールで最
小単糸繊度が1.5デニールの組み合わせが限界である。
最大単糸繊度が5デニールを越えると得られる布帛はゴ
アゴアした粗硬な風合のものしか得られず、最小単糸繊
度が0.3デニールより細くなると紡糸時のレゾナンスの
問題や紡糸糸切れの多発により紡糸の操業性が非常に難
しくなる。
The first requirement of the present invention is that the maximum fineness of the average fineness between groups is 3 to 5 deniers and the minimum fineness is 0.3 to 1.5 deniers. FIG. 1 shows the dry heat of the fiber of the present invention.
4 shows the spinning speed dependence of the ° C shrinkage. From the field of application of the yarn of the present invention, the average single yarn denier of the fiber is suitably 1.5 to 2 denier. The yarn of the present invention has a maximum single yarn fineness of 5 deniers and a single yarn fineness of the minimum stretched yarn of 0.3 denier in order to eliminate loops and thinness around the average single yarn 1.5 to 2 deniers during spinning. In order to express the difference in shrinkage due to the fine structure, the combination of a maximum single-fiber fineness of 3 denier and a minimum single-fiber fineness of 1.5 denier is the limit.
If the maximum single-fiber fineness exceeds 5 denier, the resulting fabric will only have a rough and rough texture, and if the minimum single-fiber fineness is less than 0.3 denier, there will be problems with resonance during spinning and frequent breakage of spun yarn. This makes the spinning operability very difficult.
第2の要件は本発明糸の断面形状が異形断面であり外
接円と内接円の直径比で規定される異形度が1.6以上で
ある必要がある。断面形状は丸断面以外であれば特に厳
定するものではないが従来の三角断面や五角断面、偏平
断面等が利用出来る。
The second requirement is that the cross-sectional shape of the yarn of the present invention is irregular, and the degree of irregularity defined by the diameter ratio of the circumscribed circle to the inscribed circle must be 1.6 or more. The cross-sectional shape is not particularly limited as long as it is not a round cross section, but a conventional triangular cross section, pentagonal cross section, flat cross section, or the like can be used.
またフィラメント間の断面形状は同一断面でも可能で
あるがより好ましくは、各群間で形状差や異形度が異な
ることが好ましい。異形度が1.6未満となると光沢効果
が少なくなりギラツイた光沢となったり、非常にヌメ
リ、絹様のドライな触感とはかけはなれたものになる。
The cross-sectional shape between the filaments can be the same, but more preferably, the shape difference and the degree of irregularity are different between the groups. When the degree of irregularity is less than 1.6, the luster effect is reduced and a glossy luster is obtained, and a very slimy and silky dry touch is far from being obtained.
また詳細は後述するが、丸断面に比べ異形断面糸の方
がより低い紡速で目的とする糸物性が得られる点からも
優利である。
As will be described in detail later, the modified cross-section yarn is advantageous in that the desired yarn physical properties can be obtained at a lower spinning speed than the round cross-section.
第3の要件は、収縮率に差がある群が4以上ある点に
ある。目標とする絹はまゆから操糸する際、個々のまゆ
間で引き取り張力差が生じるため絹は繊維1本1本間に
微妙な糸長差が発現し、ふくらみ効果に寄与している。
このため、理想的には混繊糸を構成する単糸合成繊維1
本1本に収縮差を付与し得ることが好ましいが、効果と
コストの関連により、4群以上が良い。3群以下では、
従来の2群異収縮混繊糸との差異は少なく、4群以上と
することにより初めて布帛としたときの絹様の繊維構造
と風合が得られる。布帛中の繊維構造は仕上り布の断面
を観測することにより、繊維の集束状態より判断が出来
る。ここで3成分以下の収縮群をもつ異収縮混繊糸の場
合は群間の繊維間空隙があるものの群内の繊維間空隙が
少なく、繊維各々の自由度が低く、ドレープ性の改善が
みられない。4群以上になると群内の繊維本数が少なく
なり、群内群間の自由度が高くなることよりより絹に近
いソフトさやドレープ性が得られる。
The third requirement is that there are four or more groups having different shrinkage rates. When the target silk is operated from the eyebrows, a difference in pulling tension is generated between the individual eyebrows, so that the silk has a subtle yarn length difference between fibers, contributing to the bulging effect.
For this reason, ideally, the single yarn synthetic fiber 1
Although it is preferable that a difference in shrinkage can be given to one of these, four or more groups are good in relation to the effect and cost. In 3 groups or less,
There is little difference from the conventional two-group different shrinkage mixed fiber, and by using four or more groups, a silk-like fiber structure and feeling when fabric is first obtained can be obtained. The fiber structure in the fabric can be determined by observing the cross section of the finished fabric from the convergence state of the fibers. Here, in the case of a different shrinkage mixed fiber having a shrinkage group of three components or less, although there is a space between fibers between groups, the space between fibers in the group is small, the degree of freedom of each fiber is low, and improvement in drape property is observed. I can't. With four or more groups, the number of fibers in the group decreases and the degree of freedom between groups within the group increases, so that softness and drape properties closer to silk can be obtained.
第4の要件は、糸全体の収縮応力として、乾熱収縮応
力のピーク応力が0.25g/d以上、好ましくは0.28g/d以
上、特に0.3g/d以上でそのピーク発生温度が65〜80℃で
ある点にある。布帛形成後繊維間拘束力が働く中で充分
な糸長差を発現させるには、収縮率差もさることなが
ら、充分な収縮応力がないと繊維間拘束力により収縮能
が阻害され目的とする充分なふくらみ効果が得られな
い。織組織や密度により拘束力は異なるものの一般的な
織物では50mg/dといわれ撚の効果や、糊剤の効果を考え
ると0.25g/d以上、好ましくは0.28g/d以上、特に0.3g/d
以上であることが必要である。0.25g/d以下の場合は、
収縮率が高くとも充分な糸長差は得られず、特に高密度
布となるとほとんど糸長差発現効果は認められない。
The fourth requirement is that, as the shrinkage stress of the entire yarn, the peak stress of the dry heat shrinkage stress is 0.25 g / d or more, preferably 0.28 g / d or more, particularly 0.3 g / d or more, and the peak generation temperature is 65 to 80. ° C. In order to express a sufficient yarn length difference while the inter-fiber restraining force acts after forming the fabric, the shrinkage ability is hindered by the inter-fiber restraining force if there is not enough shrinkage stress, not to mention the shrinkage rate difference. Sufficient swelling effect cannot be obtained. Although the binding force varies depending on the weave structure and density, in general woven fabrics it is said to be 50 mg / d and the effect of twisting, considering the effect of the paste, is 0.25 g / d or more, preferably 0.28 g / d or more, especially 0.3 g / d. d
It is necessary to be above. In the case of 0.25g / d or less,
Even if the shrinkage ratio is high, a sufficient yarn length difference cannot be obtained, and especially in the case of a high-density cloth, almost no effect on the yarn length difference is observed.
また収縮応力のピーク発生温度が重要でありその温度
が65℃未満の場合、経糸として用いた場合、糊付け後の
乾燥時に応力の低下が著しくなり高温下の高速乾燥が不
能になり、インターレースや弱撚による無糊製織が必要
となり、コスト高や、用途が制約されて不利となる。
In addition, when the peak temperature of shrinkage stress is important and the temperature is less than 65 ° C, when it is used as a warp, the stress is remarkably reduced at the time of drying after gluing, and high-speed drying at high temperature becomes impossible, and interlacing and weak It is necessary to perform non-glue weaving by twisting, which is disadvantageous due to high cost and restricted applications.
また、そのピーク発生温度が80℃を越えると糸長差発
現のための処理温度を高くする必要性が生じ、通常の80
〜90℃での精錬工程以外にショートループリラクサー等
の高温処理による別工程が必要となり、後加工工程が高
く、コスト高になる。
Further, if the peak generation temperature exceeds 80 ° C., it is necessary to increase the processing temperature for developing the yarn length difference, and the normal 80 ° C.
In addition to the refining process at ~ 90 ° C, a separate process by high-temperature treatment such as a short loop relaxer is required, resulting in high post-processing steps and high costs.
本発明に用いるポリエステル系のポリマーはポリエチ
レンテレフタレートを主たる対象とするが第3成分を共
重合したコポリエステルであってもよい。また該ポリエ
ステル系ポリマーに、艶消剤、微細孔形成剤、着色剤、
制電剤、難燃剤を含むことも可能である。
The polyester-based polymer used in the present invention is mainly polyethylene terephthalate, but may be a copolyester obtained by copolymerizing the third component. Further, the polyester-based polymer, matting agent, micropore forming agent, coloring agent,
An antistatic agent and a flame retardant can be included.
本発明には、ホモポリエステルやコポリエステルを単
独で用いても充分な効果が得られるが、組成を異にする
ポリマーを混在せしめるのがより好ましい。例えば、ポ
リエチレンテレフタレート100%のポリエステルと10モ
ル%のイソフタル酸を共重合したポリエステルとの混繊
糸とすると吐出量差に起因する収縮率差にポリマー組成
に起因する収縮率差が加わり、異収縮群が多群化して、
より好ましい特別な風合が得られる。
In the present invention, a sufficient effect can be obtained by using a homopolyester or a copolyester alone, but it is more preferable to mix polymers having different compositions. For example, if a mixed fiber of 100% polyester of polyethylene terephthalate and polyester obtained by copolymerizing 10 mol% of isophthalic acid is used, a difference in shrinkage caused by a difference in ejection amount is added to a difference in shrinkage caused by a polymer composition. The group becomes multi-group,
A more preferable special feeling is obtained.
続いて、本発明の製造方法について述べる。本発明の
方法は、4群以上の異収縮群を有する多成分異収縮混繊
糸を高効率に得る方法である。
Subsequently, the manufacturing method of the present invention will be described. The method of the present invention is a method for efficiently obtaining a multi-component hetero-shrinkage mixed fiber having four or more hetero-shrinkage groups.
第1の要件は4種以上の形状、寸法を異にするスリッ
ト組合せ型の紡糸孔群より吐出量を異ならしめて吐出す
る点にある。
The first requirement is that discharge is made different from the amount of discharge from a group of spinning holes of a slit combination type having four or more different shapes and dimensions.
ここで言うスリット組み合せ型紡糸孔とは第3図に示
す如く、aのたんざく型を基本とし、b〜eに示すよう
な型状を用いることが出来るがその形状は特に限定する
ものではない。第3図のa〜eに示す紡糸孔より得られ
る紡出フィラメントの形状をh〜lとして示す。これら
の形は特に限定するものではなく、前項で規定した断面
の異形度を満足するものであれば良い。
As shown in FIG. 3, the slit combination type spinning hole referred to here is based on a tangled type of a and can be shaped as shown by be to e, but the shape is not particularly limited. . The shapes of the spun filaments obtained from the spinning holes shown in FIGS. 3A to 3E are denoted by h to l. These shapes are not particularly limited as long as they satisfy the irregularity of the cross section defined in the preceding section.
また吐出量はそのスリット組み合せ型の断面積の2乗
でほぼ整理ができ前記フィラメントデニールの範中であ
れば特に限定するものではない。また太細のフィラメン
ト数の組み合せは特に限定するものではないが最大繊度
フィラメント郡のデニールの総和が全体のデニールの30
%未満とし、最小繊度フィラメント群のデニール総和は
全体の7%以上とすることが風合的な見地から好まし
い。
Also, the discharge amount is not particularly limited as long as it can be substantially arranged by the square of the cross-sectional area of the slit combination type and is within the range of the filament denier. The combination of the number of filaments is not particularly limited, but the sum of the denier of the maximum fineness filament group is 30% of the total denier.
%, And the total denier of the minimum fineness filament group is preferably 7% or more of the whole from the viewpoint of hand.
第4図に断面形状が丸断面糸の場合の収縮率の紡速依
存性を示した。第1図に示す異形孔による紡糸引取速度
の場合と比較すれば異形糸の方が、丸断面糸に比べ低速
度で低収縮化が可能なことがわかり、設備能力的な見地
から異形糸の方が優利である。
FIG. 4 shows the spinning speed dependence of the shrinkage rate when the cross-sectional shape is a round cross-section yarn. Compared with the case of the spinning take-off speed by the deformed hole shown in FIG. 1, the deformed yarn can be reduced in shrinkage at a lower speed than the round cross-section yarn. Is more advantageous.
第2の要件は5000m/min〜6000m/minの紡糸速度であ
る。第1図から明らかなように紡糸速度が5000m/分未満
であるとフィラメントの繊度により収縮差(微細構造
差)が大きくなり、得られた糸を引きつづいて延伸する
と残留応力差と収縮能に起因した糸長差が発現し、得ら
れた延伸糸はループやタルミが大きくなり好ましくな
い。他方5000m/分〜6000m/分の紡速とするとフィラメン
トの繊度差による収縮差がきわめて少なくすることが出
来、延伸糸のループやタルミがほとんどない糸が得られ
る。6000m/分以上の紡速になると収縮率差が激減し異収
縮差が出ない。第1図に紡糸速度と収縮応力の関係を示
す。紡糸速度は収縮応力とピーク応力発生温度の双方に
影響し、紡速を高くするほど収縮応力が高くなり、収縮
応力のピーク発生温度が高くなる。充分な収縮応力とピ
ーク発生温度を高くするために紡速を高くすることが必
須であり5000m/分以上で満足な収縮応力とピーク発生温
度が得られる。
The second requirement is a spinning speed between 5000 m / min and 6000 m / min. As is clear from FIG. 1, when the spinning speed is less than 5000 m / min, the difference in shrinkage (fine structure difference) increases due to the fineness of the filament. The resulting yarn length difference appears, and the obtained drawn yarn is unfavorable because of large loops and thickening. On the other hand, when the spinning speed is from 5000 m / min to 6000 m / min, the difference in shrinkage due to the difference in the fineness of the filament can be extremely reduced, and a yarn with almost no loops or thickening of the drawn yarn can be obtained. At a spinning speed of 6000 m / min or more, the difference in shrinkage decreases sharply and no difference in shrinkage occurs. FIG. 1 shows the relationship between spinning speed and shrinkage stress. The spinning speed affects both the shrinkage stress and the peak stress generation temperature. As the spinning speed increases, the shrinkage stress increases, and the peak shrinkage stress generation temperature increases. It is essential to increase the spinning speed in order to increase the sufficient shrinkage stress and the peak generation temperature, and a sufficient shrinkage stress and peak generation temperature can be obtained at 5000 m / min or more.
前記の様に紡糸速度と収縮応力の関係と同様にフィラ
メントの断面形状の差が収縮挙動に影響を及ぼすためス
リット組合せ型の紡糸孔形状と5000m/分〜6000m/分の紡
速の組み合せによりはじめて本発明の目的とする混繊糸
が達成出来る。
Since the difference in the cross-sectional shape of the filament affects the shrinkage behavior as well as the relationship between the spinning speed and the shrinkage stress as described above, it is the first time that the combination of the spinning hole shape of the slit combination type and the spinning speed of 5000 m / min to 6000 m / min is used. The blended yarn targeted by the present invention can be achieved.
しかしながらこの糸の収縮応力は0.2g/d前後で充分な
領域ではなく付加的な延伸が必須である。
However, the shrinkage stress of this yarn is around 0.2 g / d, which is not a sufficient region and additional drawing is essential.
第5図は延伸条件と収縮応力の関係を示す。5000m/分
以上で紡糸した糸は、収縮応力は0.22g/dくらいであ
り、不充分であり、かつ破断伸度が高く、織物にした場
合へたりやすく、実用性に乏しい。
FIG. 5 shows the relationship between stretching conditions and shrinkage stress. The yarn spun at 5,000 m / min or more has a shrinkage stress of about 0.22 g / d, is insufficient, has a high elongation at break, is fragile when woven, and has poor practicality.
本糸を延伸することに収縮応力は大きくなるが、延伸
温度と延伸引が重要であり、延伸比を1.1〜1.2倍とし、
延伸温度を85℃〜120℃とし特に好ましくは3/100秒以上
の予熱が必須である。延伸比が1.1倍未満の場合は、収
縮応力が0.25g/d以上を満足し得ず1.2倍より越えると単
糸切れが多発し、操業性が不良となる。延伸温度が85℃
未満では収縮応力が低く目的を達し得ず、160℃を越え
ると収縮率差が少なくなり、目的とする糸が得られな
い。また予熱時間は3/100秒以上であることが好まし
く、紡糸に引きつづいて延伸するいわゆるダイレクトド
ロー方式でも、一担巻取った後、別工程で延伸する方式
でも可能である。以下実施例にもとずき詳細な説明を述
べる。
Although the contraction stress increases when the present yarn is stretched, the stretching temperature and stretching are important, and the stretching ratio is 1.1 to 1.2 times,
The stretching temperature is set to 85 ° C. to 120 ° C., and it is particularly preferable to preheat at least 3/100 seconds. When the stretching ratio is less than 1.1 times, the shrinkage stress cannot satisfy 0.25 g / d or more, and when it exceeds 1.2 times, single yarn breakage occurs frequently, resulting in poor operability. Stretching temperature is 85 ℃
If it is less than 1, shrinkage stress is low and the object cannot be attained. If it exceeds 160 ° C., the difference in shrinkage rate becomes small, and the desired yarn cannot be obtained. Further, the preheating time is preferably 3/100 seconds or more, and a so-called direct draw method in which drawing is performed following spinning, or a method in which the film is wound in a single roll and then drawn in a separate step can be used. Hereinafter, a detailed description will be given based on embodiments.
本実施例に用いた紡糸孔の形状を第1表に示す。 Table 1 shows the shape of the spinning hole used in this example.
〔熱収縮率の測定方法〕 得られた延伸糸を50cmにカットし、マルチフィラメン
ト糸の状態で1/30(g/d)の荷重をかけ30cm間でマーキ
ングをし、除重後、ビロード板上で、各々のフィラメン
トに分繊し、単糸の状態で160℃の恒温槽中で、30分間
無荷重下で処理し、冷却後1本1本のフィラメントに1/
30(g/d)の荷重下で糸長l1を測定し次式を用いて収縮
率SHDを測定した。
[Method of measuring heat shrinkage] The obtained drawn yarn is cut into 50 cm, a 1/30 (g / d) load is applied in the state of a multifilament yarn, and marking is performed between 30 cm. Above, it is divided into each filament, treated in a constant temperature bath at 160 ° C under no load for 30 minutes in the state of a single yarn, and after cooling, it is divided into 1 / filament to 1 / filament.
30 were measured shrinkage SHD using the following equation by measuring the yarn length l 1 under a load of (g / d).
SHW=(30−l1)/30×100(%) 〔熱収縮応力の測定方法〕 延伸糸を20cmのループとし、カネボウエンジニアリン
グ製熱応力測定器KE−2型を用いゲージ長10cmで試料デ
ニールの1/15(g/d)の初荷重をかけ室温により100℃/
分の昇温速度で乾熱収縮応力を求め、横河電気製X−Y
レコーダーに記録して応力曲線を求めた。
SHW = (30-l 1 ) / 30 × 100 (%) [Measurement method of heat shrinkage stress] The drawn yarn is made into a loop of 20 cm, and the denier of the sample is 10 cm using a Kanebo Engineering thermal stress meter KE-2. With an initial load of 1/15 (g / d) of 100 ° C /
The dry heat shrinkage stress was determined at a heating rate of
The data was recorded on a recorder to determine a stress curve.
〔異形度の測定〕[Measurement of irregularity]
試料をアクリル樹脂に包埋、固化後、ミクロトームに
て5μ厚にカットし光学顕微鏡にて、写真を取り、得ら
れたフイルムを20倍相当に拡大し内接円と外接円を求め
次式より算出した。
After embedding the sample in acrylic resin and solidifying, cut it to a thickness of 5μ with a microtome, take a picture with an optical microscope, magnify the obtained film by 20 times, and find the inscribed circle and circumscribed circle from the following formula Calculated.
異形度=外接円直径(mm)/内接円直径(mm) (実施例) 〔実施例−1〕 フェノール/テトラクロルエタン=6/4の混合溶液
中、30℃で測定した固有粘度〔η〕が、0.62のポリエチ
レンテレフタレート(酸化チタン0.05重量%含有)を紡
糸温度290℃で紡糸した。
Degree of deformation = circumscribed circle diameter (mm) / inscribed circle diameter (mm) (Example) [Example 1] Intrinsic viscosity [η] measured at 30 ° C in a mixed solution of phenol / tetrachloroethane = 6/4 However, 0.62 polyethylene terephthalate (containing 0.05% by weight of titanium oxide) was spun at a spinning temperature of 290 ° C.
使用したノズルは同一口金面円にA=6ヶ B=2ヶ
C=6ヶ D=2ヶ E=6ヶ F=2ヶ G=2ヶ
H=6ヶ J=2ヶ K=2ヶ計30ホールの紡糸口金
を用いた。吐出糸の太いものから順に反クエンチ側に配
し、細いものほどクエンチ側に配した。全吐出量を28.3
g/分としてクエンチ風速を0.35m/sec、ノズル面クエン
チボックス間に断面材を入れ35mmの間隔をとり、5100m/
分の速度で巻きとった。
The used nozzles are A = 6 B = 2 C = 6 D = 2 E = 6 F = 2 G = 2 H = 6 J = 2 K = 2 total A 30-hole spinneret was used. Discharged yarns were arranged on the anti-quench side in order from thicker, and thinner yarns were arranged on the quench side. 28.3 total discharge
g / min, the quench wind speed is 0.35 m / sec.
Wound at a speed of minutes.
該引取糸条をホットローラ85℃で600m/分の捲取り速
度で1.15倍に延伸した。得られた延伸糸の物性を第2表
に示す。
The drawn yarn was stretched 1.15 times at a hot roller of 85 ° C. at a winding speed of 600 m / min. Table 2 shows the physical properties of the obtained drawn yarn.
該延伸糸を羽二重に製織後、85℃で精錬後、プレセッ
トし、苛性ソーダを用いて22%減量加工後、染色セット
を実施した。
The drawn yarn was woven into a double layer, refined at 85 ° C., preset, subjected to 22% weight reduction using caustic soda, and then subjected to a dyeing set.
得られた布帛は、ボリューム感に富み、ドレープ性に
すぐれ適度のドライ感を有する独特の風合を有し、張り
腰に富むかつ、ソフトな初期感触のある布帛となった。
The resulting fabric was rich in volume, had a unique drape with excellent drapability and moderate dryness, and was rich in tension and had a soft initial feel.
〔実施例−2〕 90℃のホットローラーで5100m/分で巻取り、一旦、捲
き取ることなく延伸すること以外は実施例−1と同様の
方法で延伸糸を得た。その糸物性を第2表に示した。
Example 2 A drawn yarn was obtained in the same manner as in Example 1 except that the yarn was wound at 5100 m / min with a hot roller at 90 ° C. and then stretched once without being wound up. The yarn properties are shown in Table 2.
該糸より得た布帛は、実施例−1と比べまったく遜色
のない布帛が得られた。
With the fabric obtained from the yarn, a fabric which was not inferior to Example 1 was obtained.
〔実施例−3〕 使用レジンを固有粘度が0.61で酸化チタンに変え、カ
オリナイト(HUBER社、Hydragloss 90)とする以外は実
施例−2と同様の方法で延伸糸を得、実施例−1と同様
の方法にて布帛を得た。
Example 3 A drawn yarn was obtained in the same manner as in Example 2 except that the resin used was changed to titanium oxide with an intrinsic viscosity of 0.61 and was changed to kaolinite (HUBER, Hydragloss 90). A fabric was obtained in the same manner as described above.
該布帛は実施例−1の独特の風合に加え、ドライ感が
非常に強調されたウォーム感に富むものであった。
The fabric was rich in warmness with a very dry feeling in addition to the unique feeling of Example-1.
〔実施例−4〕 実施例−1と同様の方法で紡出するのと同時に、別に
設けたエクストルーダーよりイソフタル酸を10モルパー
セント共重合したコポリエステルポリマーを同一条件下
で別個の同一寸法同配列の紡糸口金より吐出し、115℃
に加熱したゴデットローラー上に両成分を合糸して捲き
とり、一旦巻取ることなく、引き続いて1.15倍に延伸
し、87デニール72フィラメントの延伸糸を得た。
[Example 4] At the same time as spinning in the same manner as in Example 1, a copolyester polymer obtained by copolymerizing 10% by mole of isophthalic acid from a separately provided extruder under the same conditions and having the same dimensions. Discharge from the spinneret of the array, 115 ° C
The two components were combined and wound on a heated godet roller, and subsequently stretched 1.15 times without winding, thereby obtaining a stretched yarn of 87 denier 72 filaments.
該糸を製織後、実施例−1と同様の方法で仕上加工を
行った場合、ふくらみ効果、ドレープ性とも実施例−1
に勝る布帛が得られた。
When the yarn is weaved and then subjected to finishing in the same manner as in Example 1, both the swelling effect and the drapability of Example 1 are obtained.
Was obtained.
〔比較例−1〕 実施例−1で用いたものと同一のポリマーを用いて、
丸断面の紡糸孔でφ0.15mmを78ホール、φ0.23mmを24ホ
ールを設けた紡糸口金より全吐出量を毎分40.6gとし、9
5℃に加熱されたコデットローラーで4000m/分で巻き取
り、引きつづいて1.3倍に延伸したその延伸糸物性を第
2表に示した。
[Comparative Example-1] Using the same polymer as that used in Example-1,
The total discharge rate from the spinneret provided with 78 holes for φ0.15 mm and 24 holes for φ0.23 mm in the spinning hole with a round cross section was 40.6 g / min, and 9
The wound yarn was wound at 4,000 m / min with a codet roller heated to 5 ° C. and subsequently stretched 1.3 times.
得られた糸の熱応力は0.28g/dで満足出来るものであ
るが、延伸糸にループやたるみが多く、織準備工程で解
舒性が悪く、問題となった。また得られた布の風合は、
一応のふくらみがあるが、ヌメリ感がつよく、ドライ感
に欠ける布帛となった。
Although the thermal stress of the obtained yarn was 0.28 g / d, which was satisfactory, the drawn yarn had many loops and slacks, and the unwinding property was poor in the weaving preparation process, which became a problem. The texture of the obtained cloth is
Although the fabric had some swelling, the fabric was slimy and lacked dryness.
〔比較例−2〕 紡糸速度を4500m/分、延伸倍率を1.2倍とすること以
外は、実施例−2と同様の方法で延伸糸を得た。得られ
た延伸糸の熱応力は充分であるが延伸糸にループやタル
ミが多く、後工程の通過性が悪く、問題となった。
Comparative Example 2 A drawn yarn was obtained in the same manner as in Example 2, except that the spinning speed was 4500 m / min and the draw ratio was 1.2 times. Although the obtained drawn yarn had a sufficient thermal stress, the drawn yarn had many loops and lumps, and the passing property in the subsequent process was poor, which became a problem.
また得られた布はふくらみはあるもののやや粗硬であ
った。
Further, the obtained cloth was slightly coarse, though swelled.
〔比較例−3〕 実施例−1で得た紡出糸を延伸することなくそのまま
製織した後工程通過性は特に問題なかったが仕上り布は
原糸の伸度が高く収縮応力が低いため、へたりやすく、
ふくらみの乏しいゴアゴアとした風合の布帛となった。
[Comparative Example-3] After weaving the spun yarn obtained in Example-1 as it was without stretching, there was no particular problem with the processability, but the finished fabric has a high elongation of the original yarn and a low shrinkage stress. Easy to settle,
It became a cloth with a feeling of Goa Goa with little swelling.
〔比較例−4〕 延伸時の予熱温度を室温とする以外は実施例−2と全
く同じ条件で延伸糸を得、製織、染仕上を実施した。
[Comparative Example-4] A drawn yarn was obtained, woven, and dyed and finished under exactly the same conditions as in Example-2 except that the preheating temperature during drawing was room temperature.
得られた延伸糸物性を第2表に示す通り収縮応力が低
い結果、得られた布帛はふくらみに欠けペーパーライク
な風合しか得られなかった。
As shown in Table 2, the obtained drawn yarn had a low shrinkage stress, and as a result, the obtained fabric lacked swelling and only a paper-like feeling was obtained.
〔比較例−5〕 延伸時の延伸倍率を1.05とする以外は実施例と全く同
様に延伸糸を得、製織、仕上げした。
[Comparative Example-5] A drawn yarn was obtained, woven and finished in exactly the same manner as in Example except that the draw ratio during drawing was set to 1.05.
収縮応力が低くふくらみに欠けた粗硬な布帛しか得ら
れなかった。
Only a coarse and hard fabric having low shrinkage stress and lacking swelling was obtained.
〔比較例−6〕 実施例−2と同条件で吐出し、紡速4000m/分で巻き取
り、室温下で1.15倍に延伸して延伸糸を得た。その物性
を第2表に示した。第2表に見られる通り収縮率は高い
ものの収縮応力の低い物性糸となった。
[Comparative Example-6] The composition was discharged under the same conditions as in Example-2, wound up at a spinning speed of 4000 m / min, and stretched 1.15 times at room temperature to obtain a drawn yarn. The physical properties are shown in Table 2. As can be seen from Table 2, the yarn had a high shrinkage but a low shrinkage stress.
そのため得られた布帛はふくらみに欠け、単糸デニー
ルが5dを越える繊維の混在のためか非常に硬い布帛にな
ってしまった。
As a result, the obtained fabric lacked swelling, and became a very hard fabric probably due to the mixture of fibers having a single yarn denier exceeding 5d.
〔比較例−7〕 延伸時の予熱温度を100℃、延伸倍率を1.25倍とする
以外は実施例−2と全く同条件で製糸、製織し、仕上げ
布を得た。延伸時の単糸切れや単糸の巻つきが多発し操
業性がわるかった。
[Comparative Example-7] Yarn spinning and weaving were performed under exactly the same conditions as in Example 2 except that the preheating temperature during stretching was set at 100 ° C and the stretching ratio was set at 1.25, to obtain a finished fabric. The operability was poor due to frequent breakage of the single yarn and winding of the single yarn during stretching.
また得られた布は収縮率差が少ないことからふくらみ
に欠けペーパーライクな風合となった。
Further, the obtained cloth lacked swelling due to a small difference in shrinkage ratio and had a paper-like feeling.
(発明の効果) この発明の異収縮混繊糸は、以上の様に構成されてお
り、ループやたるみが生じない混繊糸で特に熱収縮応力
が0.25g/d以上と従来の異収縮混繊糸に比べて大きく、
その最大収縮応力の発生温度が60〜80℃になるように形
成されているので布帛とした場合、繊維間の拘束力によ
る糸長差の発現が阻害されることなく充分なふくらみ効
果を発現するといった特有の効果を示し、一方この異収
縮混繊糸を安定的に高い生産性をもって製造する方法が
提供できる。
(Effect of the Invention) The hetero-shrink mixed yarn of the present invention is constituted as described above, and is a non-shrink yarn which does not generate loops or sag, and has a heat shrinkage stress of 0.25 g / d or more, in particular. Larger than a yarn,
When the fabric is formed so that the temperature at which the maximum shrinkage stress is generated becomes 60 to 80 ° C., a sufficient swelling effect is exhibited without inhibiting the expression of the yarn length difference due to the binding force between the fibers. On the other hand, it is possible to provide a method for stably producing this hetero-shrinkage mixed fiber with high productivity.
【図面の簡単な説明】[Brief description of the drawings]
第1図は、異形孔による紡糸引取速度と160℃乾熱収縮
率の関係を繊度別に示す図である。 第2図は紡糸引取速度と糸の収縮応力の関係を示す図で
ある。 第3図は、本発明に言う、スリット組合せ型紡糸孔の形
状例a〜eとそれらに対応して得られる繊維の断面形状
例h〜lを示す図である。 第4図は、丸断面紡糸孔による紡糸引取速度と160℃乾
熱収縮率の関係を繊度別に示した図である。 第5図は、異形孔ノズルを用いて5000m/分の紡糸速度で
紡糸した糸と該未延伸糸を各々の延伸倍率で延伸した糸
と、1300m/分で紡糸した糸を延伸熱処理段階で2分し
(一方は、85℃のホットローラを用い次いで150℃のホ
ットプレートで3.1倍に延伸し他方は、85℃のホットロ
ーラを用い次いでホットプレートを用いずに3.1倍に延
伸)次いで両方を合糸した糸それぞれの糸の熱収縮式力
パターンを示した図である。 イ:5d ロ:2d ハ:0.5d ニ:Vw=5500m/min、ホ:Vw=5000m/min ヘ:Vw=4500m/min、ト:Vw=4000m/min チ:Vw5000m/min未延伸糸 リ:25℃で延伸倍率1.15 ヌ:85℃で延伸倍率1.1 ル:85℃で延伸倍率1.15 ヲ:Vw1300m/分85℃で3.1倍延伸
FIG. 1 is a diagram showing the relationship between the spinning take-off speed due to irregular holes and the dry heat shrinkage at 160 ° C. for each fineness. FIG. 2 is a diagram showing the relationship between the spinning take-off speed and the shrinkage stress of the yarn. FIG. 3 is a diagram showing examples of the shapes a to e of the slit combination type spinning holes according to the present invention and examples h to l of the cross-sectional shapes of the fibers obtained corresponding thereto. FIG. 4 is a diagram showing the relationship between the spinning take-off speed by a circular cross-section spinning hole and the dry heat shrinkage at 160 ° C. for each fineness. FIG. 5 shows a yarn spun at a spinning speed of 5000 m / min using a deformed hole nozzle, a yarn spun at a draw ratio of the undrawn yarn at each draw ratio, and a yarn spun at 1300 m / min at a drawing heat treatment stage. (Using a hot roller at 85 ° C. and stretching 3.1 times on a hot plate at 150 ° C., and using a hot roller at 85 ° C. and stretching 3.1 times without a hot plate) It is the figure which showed the heat contraction type force pattern of each thread | yarn of the plied thread | yarn. A: 5d B: 2d C: 0.5d D: Vw = 5500m / min, E: Vw = 5000m / min F: Vw = 4500m / min, G: Vw = 4000m / min H: Vw5000m / min Undrawn yarn Re: Stretching ratio at 25 ° C 1.15 Nu: Stretching ratio 1.1 at 85 ° C: Stretching ratio 1.15 at 85 ° C ヲ: Vw 1300m / min 3.1 times stretching at 85 ° C
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 FI D01F 6/62 303 D01F 6/62 303H 6/84 301 6/84 301E 6/92 301 6/92 301M D02G 1/18 D02G 1/18 D02J 1/22 D02J 1/22 J P (58)調査した分野(Int.Cl.6,DB名) D02G 3/04 D02G 1/18 D02J 1/22 D01D 5/253 D01F 6/62 D01F 6/84 D01F 6/92──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI D01F 6/62 303 D01F 6/62 303H 6/84 301 6/84 301E 6/92 301 6/92 301M D02G 1/18 D02G 1 / 18 D02J 1/22 D02J 1/22 JP (58) Fields studied (Int.Cl. 6 , DB name) D02G 3/04 D02G 1/18 D02J 1/22 D01D 5/253 D01F 6/62 D01F 6 / 84 D01F 6/92

Claims (2)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】互いに収縮率差を有する少なくとも4群以
    上の糸条群よりなる異収縮混繊糸であり、該糸条群の群
    間において、最も太い単糸の群の単糸繊度が3〜5デニ
    ールであり、最も細い単糸の群の単糸繊度が0.3〜1.5デ
    ニールであり、該混繊糸のトータル糸の乾熱収縮応力が
    0.25g/d以上、且つその最大収縮応力発生温度が65〜80
    ℃にあり、該混繊糸を構成する各フィラメントの断面形
    状は、横断面における外接円と内接円の直径比で規定す
    る異形度が1.6以上であることを特徴とするポリエステ
    ル系異繊度異収縮混繊糸。
    1. A hetero-shrinkage mixed fiber comprising at least four or more yarn groups having a difference in shrinkage from each other, and among the yarn groups, the single yarn fineness of the thickest single yarn group is 3 55 denier, the fineness of the single yarn group is 0.3 to 1.5 denier, and the dry heat shrinkage stress of the total yarn of the mixed yarn is
    0.25g / d or more and its maximum shrinkage stress generation temperature is 65 ~ 80
    ° C, and the cross-sectional shape of each filament constituting the mixed fiber is such that the degree of irregularity defined by the diameter ratio of the circumscribed circle and the inscribed circle in the cross section is 1.6 or more, Shrink mixed fiber.
  2. 【請求項2】外接円と内接円の直径比で規定する異形度
    が1.6以上の断面形状を有するフィラメント製造用の紡
    糸口金であって、形状、寸法を異にするスリット組合せ
    型の紡糸孔群を4群以上有する紡糸口金を用いて、ポリ
    エステル系ポリマーを溶融吐出し、紡糸口金直下50mm以
    内で冷却風により冷却固化し、5000〜6000m/分の引取速
    度で引取り、一旦巻き取った後、或いは一旦巻き取るこ
    となく引き続いて85〜120℃で予熱した後1.1〜1.2倍の
    延伸倍率で延伸することを特徴とするポリエステル系異
    収縮混繊糸の製造方法。
    2. A spinneret for producing a filament having a cross-sectional shape having a degree of irregularity defined by a diameter ratio of a circumscribed circle and an inscribed circle of 1.6 or more, wherein a spinning hole of a slit combination type having different shapes and dimensions. Using a spinneret having four or more groups, the polyester polymer is melted and discharged, cooled and solidified by cooling air within 50 mm immediately below the spinneret, taken up at a take-up speed of 5000 to 6000 m / min, and once wound up Alternatively, a method for producing a polyester-based heterogeneously shrinkable mixed yarn, comprising preheating at 85 to 120 ° C. without winding once, and then drawing at a draw ratio of 1.1 to 1.2 times.
JP15855689A 1989-06-21 1989-06-21 Different fineness / different shrinkage mixed fiber and method for producing the same Expired - Fee Related JP2844680B2 (en)

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Application Number Priority Date Filing Date Title
JP15855689A JP2844680B2 (en) 1989-06-21 1989-06-21 Different fineness / different shrinkage mixed fiber and method for producing the same

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JPH0327140A JPH0327140A (en) 1991-02-05
JP2844680B2 true JP2844680B2 (en) 1999-01-06

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3009539B2 (en) * 1992-04-14 2000-02-14 東レ株式会社 Core-sheath type polyester composite yarn for inner
WO1994003660A1 (en) * 1992-08-05 1994-02-17 E.I. Du Pont De Nemours And Company Polyester mixed yarns with fine filaments
JP6658914B2 (en) * 2017-09-11 2020-03-04 三菱ケミカル株式会社 Spun yarn, method for producing spun yarn, and knitted fabric
CN110923835A (en) * 2019-12-23 2020-03-27 苏州萧然新材料有限公司 Preparation process of moisture-absorbing and sweat-releasing terylene low-elasticity composite yarn

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