JP2006009162A - Method for producing thermoplastic synthetic fiber - Google Patents
Method for producing thermoplastic synthetic fiber Download PDFInfo
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- JP2006009162A JP2006009162A JP2004183619A JP2004183619A JP2006009162A JP 2006009162 A JP2006009162 A JP 2006009162A JP 2004183619 A JP2004183619 A JP 2004183619A JP 2004183619 A JP2004183619 A JP 2004183619A JP 2006009162 A JP2006009162 A JP 2006009162A
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- thermoplastic synthetic
- hot plate
- fine particles
- fiber
- synthetic fiber
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- 229920001169 thermoplastic Polymers 0.000 title claims abstract description 23
- 239000004416 thermosoftening plastic Substances 0.000 title claims abstract description 19
- 229920002994 synthetic fiber Polymers 0.000 title claims abstract description 16
- 239000012209 synthetic fiber Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000010419 fine particle Substances 0.000 claims abstract description 23
- 229920001059 synthetic polymer Polymers 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 239000004760 aramid Substances 0.000 claims description 2
- 229920003235 aromatic polyamide Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 235000013351 cheese Nutrition 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 229910052919 magnesium silicate Inorganic materials 0.000 description 2
- 239000000391 magnesium silicate Substances 0.000 description 2
- 235000019792 magnesium silicate Nutrition 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052628 phlogopite Inorganic materials 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polyparaphenylene benzoxazole Polymers 0.000 description 2
- 229910021647 smectite Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- ZBMISJGHVWNWTE-UHFFFAOYSA-N 3-(4-aminophenoxy)aniline Chemical compound C1=CC(N)=CC=C1OC1=CC=CC(N)=C1 ZBMISJGHVWNWTE-UHFFFAOYSA-N 0.000 description 1
- LVGKZTVMAHRVFR-UHFFFAOYSA-N 4-(phenoxazine-10-carbonyl)benzamide Chemical compound C1=CC(C(=O)N)=CC=C1C(=O)N1C2=CC=CC=C2OC2=CC=CC=C21 LVGKZTVMAHRVFR-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
本発明は、熱可塑性合成繊維の製造方法に関するものである。さらに詳しくは、熱融着性を有する熱可塑性合成重合体からなる繊維を、高温下で熱延伸して繊度斑の少ない品位に優れた熱可塑性合成繊維を製造する方法に関するものである。 The present invention relates to a method for producing a thermoplastic synthetic fiber. More specifically, the present invention relates to a method for producing a thermoplastic synthetic fiber excellent in quality with few fineness spots by thermally stretching a fiber made of a thermoplastic synthetic polymer having heat-fusibility at a high temperature.
近年、合成繊維に対する市場要求は高度化し、特に単糸繊度が細いマルチフィラメントに対する要求が強くなってきている。このため、例えば全芳香族ポリアミド繊維や全芳香族ポリエステル繊維にあっては、高温下でフロー延伸して単糸繊度が細い繊維を得ることが行われている。また、近年の製糸速度の高速化に伴って、熱延伸の温度も高くなってきている。 In recent years, the market demand for synthetic fibers has been advanced, and in particular, the demand for multifilaments having a fine single yarn fineness has been increasing. For this reason, for example, in the case of wholly aromatic polyamide fiber or wholly aromatic polyester fiber, it is performed to flow-draw at a high temperature to obtain a fiber having a fine single yarn fineness. In addition, with the recent increase in the yarn production speed, the temperature of the heat drawing is also increasing.
ところが、このように高温でフロー延伸すると、繊維は軟化し、単繊維間での融着現象が生じるだけでなく、熱板等の加熱装置と繊維と間の摩擦により繊度斑を生じやすく、例えば２本の繊維束を撚り合わせて双糸とした場合に不均一な撚り部分が生じるとか、織物に加工した場合に、部分的な織密度斑や強度斑が生じる等の問題を引き起こす。 However, when flow-stretching at such a high temperature, the fibers soften, and not only the fusion phenomenon between single fibers occurs, but also fineness spots are likely to occur due to friction between the heating device such as a hot plate and the fibers. When two fiber bundles are twisted to form a double yarn, a non-uniform twisted portion is generated, or when it is processed into a woven fabric, problems such as partial woven density spots and strength spots occur.
このような問題を解決するため、特許文献１には、パラ型芳香族コポリアミドからなる未延伸糸を高温でフロー延伸するに先立って、湿潤状態で１．０５〜３倍率に予備延伸してセクション斑（真円度）を１．０１〜１．３０にすると共に、無機微粒子であるタルク等の融着防止剤を繊維表面に付与する方法が提案されている。しかしながら、この方法では真円度の改善された繊維は得られるものの、高温で熱板延伸する際に生ずる繊度斑については、その改善レベルは未だ不十分なものである。 In order to solve such a problem, Patent Document 1 discloses that an unstretched yarn made of para-type aromatic copolyamide is prestretched in a wet state at 1.05 to 3 times prior to flow-stretching at a high temperature. A method has been proposed in which section spots (roundness) are adjusted to 1.01 to 1.30 and an anti-fusing agent such as talc, which is inorganic fine particles, is applied to the fiber surface. However, although this method provides fibers with improved roundness, the level of improvement is still insufficient with respect to fineness spots that occur when hot plate stretching is performed at a high temperature.
また、特開平１１−２９３５１３号には、湿式紡糸法で合成繊維を製造する際、紡糸原液と凝固浴の間に断熱層を設けて紡糸原液の温度斑を抑制して繊度斑を改善する方法が提案されている。しかしこの方法では、未延伸糸の繊度斑は改善されても、高温で熱板延伸する際に生ずる繊度斑を改善することはできない。 Japanese Patent Application Laid-Open No. 11-293513 discloses a method for improving fineness spots by providing a heat insulating layer between a spinning dope and a coagulation bath to suppress temperature spots in the spinning dope when producing synthetic fibers by a wet spinning method. Has been proposed. However, with this method, even if the fineness unevenness of the undrawn yarn is improved, it is not possible to improve the fineness unevenness that occurs when the hot plate is drawn at a high temperature.
本発明は、上記背景技術を鑑みなされたもので、その目的は、高温下で熱延伸する際に生ずる延伸斑を抑制し、繊度斑が少なく且つ毛羽等の少ない高品位の熱可塑性合成繊維を製造する方法を提供することにある。 The present invention has been made in view of the above-mentioned background art, and its purpose is to suppress high-quality thermoplastic synthetic fibers with reduced fineness and less fluff, etc. It is to provide a method of manufacturing.
本発明者らの研究によれば、上記課題は、「熱可塑性合成重合体からなる未延伸繊維を熱板上で熱延伸するに際し、該熱板上に非融着性微粒子を存在させることを特徴とする熱可塑性合成繊維の製造方法。」により達成できることが見いだされた。 According to the study by the present inventors, the above-mentioned problem is that “when a non-stretched fiber made of a thermoplastic synthetic polymer is hot-drawn on a hot plate, non-fusible particles are present on the hot plate. It has been found that this can be achieved by the method for producing a thermoplastic synthetic fiber characterized.
本発明の製造方法によれば、熱板上で熱延伸する際、該熱板上に非融着性微粒子を存在させているので、熱板と走行繊維との摩擦が低下して均一な延伸が可能となり、単糸繊度斑が抑制されると共に毛羽の発生も抑制された品位に優れた熱可塑性合成繊維を効率よく生産することができる。 According to the production method of the present invention, when heat stretching is performed on a hot plate, non-fusible fine particles are present on the hot plate, so that the friction between the hot plate and the running fiber is reduced and uniform stretching is performed. Thus, it is possible to efficiently produce a thermoplastic synthetic fiber excellent in quality in which the single yarn fineness unevenness is suppressed and the generation of fluff is also suppressed.
本発明における熱可塑性合成重合体は、該重合体からなる未延伸繊維が高温で熱延伸されるようなものを対象とするが、その代表的なものとしては、コポリパラフェニレン・３，４’−オキシジフェニレンテレフタルアミド等のパラ型全芳香族コポリアミド、ポリパラフェニレンベンゾオキサゾール、ポリエチレン（高強力繊維用）、全芳香族ポリエステル等を例示することができる。なかでも、コポリパラフェニレン・３，４’−オキシジフェニレンテレフタルアミドは、高強力繊維を得るためには未延伸繊維を３００℃以上、好ましくは３５０〜５５０℃の高温に加熱して６倍以上に熱延伸する必要があり、繊維が軟化して熱板上での延伸性が悪化しやすいので、本発明が対象とする熱可塑性合成重合体としては特に好適である。 The thermoplastic synthetic polymer in the present invention is intended to be one in which unstretched fibers made of the polymer are heat-stretched at a high temperature. Typical examples thereof include copolyparaphenylene-3, 4 ′. Examples include para-type wholly aromatic copolyamides such as oxydiphenylene terephthalamide, polyparaphenylene benzoxazole, polyethylene (for high-strength fibers), wholly aromatic polyesters, and the like. Among these, copolyparaphenylene 3,4'-oxydiphenylene terephthalamide is obtained by heating unstretched fibers to a high temperature of 300 ° C. or higher, preferably 350 to 550 ° C., in order to obtain high strength fibers. It is particularly suitable as the thermoplastic synthetic polymer targeted by the present invention because the fibers are softly stretched and the fibers soften and the stretchability on the hot plate tends to deteriorate.
本発明においては、上記の熱可塑性重合体からなる未延伸繊維を熱板上で熱延伸するに際し、該熱板上に非融着性微粒子を存在させることが肝要である。かくすることにより、熱可塑性重合体が軟化するような高温で熱延伸しても、熱板と繊維との間の摩擦を小さくすることができ、延伸の均一性が向上して単糸の繊度斑（Ｕ％）が１．５％以下と高品位のものを容易に製造することができる。 In the present invention, when the unstretched fiber made of the above thermoplastic polymer is hot-drawn on a hot plate, it is important that non-fusible fine particles exist on the hot plate. In this way, even when hot-stretched at such a high temperature that the thermoplastic polymer is softened, the friction between the hot plate and the fiber can be reduced, and the uniformity of stretching is improved and the fineness of the single yarn is improved. High quality products with spots (U%) of 1.5% or less can be easily produced.
熱板上に非融着性微粒子を存在させる方法は任意であるが、熱板上に間歇的に供給する方法では延伸の均一性が低下するので、走行繊維に対して一定の比率で連続的に供給するのが好ましい。この際、該微粒子は繊維と熱板間に供給されるようにするのが好ましい。 The method of allowing the non-fusible fine particles to be present on the hot plate is arbitrary, but the method of supplying intermittently on the hot plate decreases the uniformity of stretching, so it is continuous at a constant ratio to the running fiber. It is preferable to supply to. At this time, the fine particles are preferably supplied between the fiber and the hot plate.
熱板上での延伸温度は、用いる熱可塑性重合体の種類によって異なるが、該重合体の軟化に起因する繊維・熱板間の摩擦を低減することにより本発明の効果が大きくなるので、軟化点近傍以上の温度で延伸することが好ましい。例えばコポリパラフェニレン・３，４’−オキシジフェニレンテレフタルアミドからなる未延伸繊維の場合には、３００℃以上、好ましくは３５０〜５５０℃の高温に加熱して６倍以上に熱延伸するのが好ましい。 The stretching temperature on the hot plate varies depending on the type of thermoplastic polymer used, but the effect of the present invention is increased by reducing the friction between the fiber and the hot plate due to the softening of the polymer. It is preferable to stretch at a temperature of near the point. For example, in the case of an unstretched fiber made of copolyparaphenylene 3,4'-oxydiphenylene terephthalamide, it is heated to a high temperature of 300 ° C. or higher, preferably 350 to 550 ° C., and is heat-stretched six times or more. preferable.
ここで使用される非融着性微粒子は、熱延伸時の高温下においても融着性を示さない微粒子であり、特に化学的に安定でかつ合成繊維に対し酸化等の化学作用を及ぼさない無機微粒子が好ましい。該微紛末の大きさは、粒子の小さい方がよく、平均粒径が２０μｍ以下、好ましくは１０μｍ以下、特に好ましくは１〜５μｍのものが、熱板と繊維の間に均一に存在させやすくなるので好適である。 The non-fusible fine particles used here are fine particles that do not exhibit fusibility even at high temperatures during hot stretching, and are particularly inorganic that is chemically stable and does not exert chemical action such as oxidation on synthetic fibers. Fine particles are preferred. The size of the fine powder is preferably smaller particles, and an average particle size of 20 μm or less, preferably 10 μm or less, particularly preferably 1 to 5 μm, is easily present between the hot plate and the fiber. This is preferable.
また、本発明で使用される非融着性微粒子は、その融点が熱延伸時の温度より低すぎると本発明の目的を達成することが困難になるので、該熱板温度より高い融点を有するものが好ましい。熱板温度は熱可塑性重合体の種類によって異なるが、通常、該微粒子の融点は好ましくは３５０℃以上、特に好ましくは５５０℃以上であればよく、特に上限を設定する必要はない。 In addition, the non-fusible fine particles used in the present invention have a melting point higher than the hot plate temperature because it becomes difficult to achieve the object of the present invention if the melting point is too lower than the temperature at the time of hot stretching. Those are preferred. The hot plate temperature varies depending on the type of thermoplastic polymer, but usually the melting point of the fine particles is preferably 350 ° C. or higher, particularly preferably 550 ° C. or higher, and there is no need to set an upper limit.
本発明で有効に使用できる非融着性微粉子は数多く存在するが、その中でも、珪酸アルミニウム、グラファイト、スメクタイト、タルク、珪酸マグネシウムおよびマイカからなる群より選ばれた１種または２種以上の無機物からなるものが特に好適である。 There are many non-fusible fine powders that can be used effectively in the present invention, and among them, one or more inorganic substances selected from the group consisting of aluminum silicate, graphite, smectite, talc, magnesium silicate and mica. Those consisting of are particularly preferred.
なお、本発明で熱延伸の際に軟化しやすい未延伸繊維を対象としているため、単繊維同士が融着して延伸性が低下しやすい。このため、延伸に先立って繊維表面に非融着性微粒子、特に不活性な無機微粉末を塗布することが好ましい。かくすることにより、熱延伸工程や熱処理工程での単繊維間の融着現象を抑制することができる。 In the present invention, unstretched fibers that tend to soften during hot stretching are targeted, so that the single fibers are fused together, and the stretchability is likely to decrease. For this reason, it is preferable to apply non-fusible fine particles, particularly inert inorganic fine powder, to the fiber surface prior to stretching. By doing so, it is possible to suppress the fusion phenomenon between the single fibers in the heat stretching step and the heat treatment step.
ここで用いられる非融着性微粒子は、上記の非融着性微粒子と同一でも異なっていてもよいが、上記と同じく珪酸アルミニウム、グラファイト、スメクタイト、タルク、珪酸マグネシウムおよびマイカなどの無機微粒子が好適である。 The non-fusible fine particles used here may be the same as or different from the non-fusible fine particles described above, but as described above, inorganic fine particles such as aluminum silicate, graphite, smectite, talc, magnesium silicate and mica are suitable. It is.
これら非融着性微粒子の繊維に対する付着量は０．５〜３．０重量％、好ましくは１．０〜２．０重量％の範囲が適当である。付着量が０．５重量％未満の場合には、繊維表面に該微粒子を均一に付着させることが困難となって融着防止効果が低下する傾向にあり、一方、付着量が３．０重量％を超える場合には、単繊維間に多くの微粒子が取り込まれすぎる傾向がある。 The adhesion amount of these non-fusible fine particles to the fiber is 0.5 to 3.0% by weight, preferably 1.0 to 2.0% by weight. When the adhesion amount is less than 0.5% by weight, it is difficult to uniformly adhere the fine particles to the fiber surface, and the anti-fusing effect tends to be reduced. On the other hand, the adhesion amount is 3.0% by weight. When it exceeds%, many fine particles tend to be taken in too much between the single fibers.
以下、実施例をあげて本発明をさらに具体的に説明する。なお、実施例中における各特性値は下記の方法で測定した。
（１）繊度斑（Ｕ％）
計測器工業（株）製「イヴネステスター」を用い、糸速度５０ｍ／分、レンジ２５％、測定時間２分間（測定糸長１００ｍ）にて測定した。
（２）毛羽数
２Ｋｇ巻きチーズの表層ケバ数を目視にてカウントした。
Hereinafter, the present invention will be described more specifically with reference to examples. In addition, each characteristic value in an Example was measured with the following method.
(1) Fineness spots (U%)
Using an “Evestester” manufactured by Keiki Kogyo Co., Ltd., measurement was performed at a yarn speed of 50 m / min, a range of 25%, and a measurement time of 2 minutes (measurement yarn length of 100 m).
(2) Number of fluff The surface layer number of 2 kg wound cheese was counted visually.
［実施例１］
パラフェニレンジアミン成分２５モル％、３，４’−ジアミノジフェニルエーテル成分２５モル％、およびテレフタル酸成分５０モル％からなる固有粘度が３．１のパラ型芳香族共重合ポリアミドを、塩化カルシウムを含有するＮ−メチルピロリドン（ＮＭＰ）に溶解してポリマー濃度が６重量％の溶液を得た。
[Example 1]
A para-type aromatic copolymer polyamide having an intrinsic viscosity of 3.1, comprising 25 mol% of a paraphenylenediamine component, 25 mol% of a 3,4'-diaminodiphenyl ether component, and 50 mol% of a terephthalic acid component, contains calcium chloride. A solution having a polymer concentration of 6% by weight was obtained by dissolving in N-methylpyrrolidone (NMP).
得られた溶液を、孔径０．３ｍｍ、孔数１３３の紡糸口金から５３．４ｇ／分の吐出速度で押し出し、空気中を約１０ｍｍ走行させた後、温度５０℃、濃度３０重量％のＮＭＰ水溶液からなる凝固浴中に押し出して凝固させ、１３ｍ／分の速度で引き上げた。続いて、温度５０℃で水洗しながら、１．１５倍の延伸倍率で予備延伸した後、繊維表面に非融着性微粒子として平均粒子径が１．５μｍのタルク粉末（融点：８００℃以上）を繊維に対し２重量％の割合で塗布した後、温度２００℃のローラー上で乾燥し、次いで温度５００℃、長さ１ｍの熱板上で全延伸倍率が１０．０倍となるようにフロー延伸をおこなった。この際熱板上に、非融着性微粒子として乾燥前に繊維表面に塗布した平均粒子径が１．５μｍのタルク粉末を敷き詰め、また、熱板延伸中も容積式フーダーを用いて２５ｇ／ｈｒの割合で同じタルク粉末を熱板上に連続供給した。次いで巻き量が２Ｋｇとなるようにチーズ状に巻き取った。得られた繊維の評価結果を表１に示す。 The obtained solution was extruded from a spinneret having a hole diameter of 0.3 mm and a hole number of 133 at a discharge speed of 53.4 g / min and allowed to travel about 10 mm in air, and then an NMP aqueous solution having a temperature of 50 ° C. and a concentration of 30% by weight. It was extruded into a coagulation bath consisting of the following solidification, and pulled up at a speed of 13 m / min. Subsequently, after pre-drawing at a draw ratio of 1.15 times while washing with water at a temperature of 50 ° C., talc powder having an average particle size of 1.5 μm as non-fusible fine particles on the fiber surface (melting point: 800 ° C. or more) Is applied on a fiber at a rate of 2% by weight, dried on a roller at a temperature of 200 ° C., and then flowed so that the total draw ratio becomes 10.0 times on a hot plate having a temperature of 500 ° C. and a length of 1 m. Stretching was performed. At this time, talc powder having an average particle size of 1.5 μm applied to the fiber surface before drying as non-fusible fine particles was spread on the hot plate, and 25 g / hr using a positive displacement fooder during hot plate drawing. The same talc powder was continuously fed onto the hot plate at a ratio of Subsequently, it wound up in cheese shape so that winding amount might be set to 2 kg. The evaluation results of the obtained fiber are shown in Table 1.
［比較例１］
実施例１において、熱板上にタルク粉末を存在させることなく、かつ、延伸中にもタルク粉末を供給することなく熱板延伸する以外は、実施例１と同様に紡糸延伸した。得られた繊維を実施例１と同様に評価した結果を表１にあわせて示す。
[Comparative Example 1]
In Example 1, spin drawing was performed in the same manner as in Example 1 except that hot plate stretching was performed without causing talc powder to be present on the hot plate and supplying talc powder during stretching. The results of evaluating the obtained fibers in the same manner as in Example 1 are shown in Table 1.
以上に説明した本発明の製造方法によれば、熱板上で熱延伸する際の摩擦を低下させることができ、単糸繊度の斑が抑制された品位に優れた熱可塑性合成繊維を効率よく生産することができる。したがって、これによりを付与した場合には長さ方向に均一な撚りを有するものが得られ、また、製織した場合には部分的な織密度斑の無い高品位の織物が得られる。 According to the production method of the present invention described above, the friction during hot drawing on a hot plate can be reduced, and a thermoplastic synthetic fiber excellent in quality in which unevenness of single yarn fineness is suppressed can be efficiently produced. Can be produced. Therefore, when this is imparted, one having a uniform twist in the length direction is obtained, and when weaving, a high-quality woven fabric without partial weave density spots is obtained.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014005550A (en) * | 2012-06-21 | 2014-01-16 | Teijin Ltd | Para-wholly aromatic copolyamide fiber bundle |
| JP2014210989A (en) * | 2013-04-18 | 2014-11-13 | 帝人株式会社 | Fine-denier modified cross-section hollow staple fiber, spun yarn using the same, woven or knitted fabric, and production method for fine-denier modified cross-section hollow fiber |
| JP2014210990A (en) * | 2013-04-18 | 2014-11-13 | 帝人株式会社 | Fine-denier porous hollow staple fiber, spun yarn using the same, woven or knitted fabric, and production method for fine-denier porous hollow fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59137535A (en) * | 1983-01-24 | 1984-08-07 | 帝人株式会社 | Stretching of synthetic fiber |
| JPS62149934A (en) * | 1985-09-24 | 1987-07-03 | 帝人株式会社 | Production of thermoplastic synthetic fiber |
| JP2004162230A (en) * | 2002-11-15 | 2004-06-10 | Teijin Techno Products Ltd | Method for producing thermoplastic synthetic fiber |
| JP2005002517A (en) * | 2003-06-13 | 2005-01-06 | Teijin Techno Products Ltd | Method for producing thermoplastic synthetic fiber |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59137535A (en) * | 1983-01-24 | 1984-08-07 | 帝人株式会社 | Stretching of synthetic fiber |
| JPS62149934A (en) * | 1985-09-24 | 1987-07-03 | 帝人株式会社 | Production of thermoplastic synthetic fiber |
| JP2004162230A (en) * | 2002-11-15 | 2004-06-10 | Teijin Techno Products Ltd | Method for producing thermoplastic synthetic fiber |
| JP2005002517A (en) * | 2003-06-13 | 2005-01-06 | Teijin Techno Products Ltd | Method for producing thermoplastic synthetic fiber |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014005550A (en) * | 2012-06-21 | 2014-01-16 | Teijin Ltd | Para-wholly aromatic copolyamide fiber bundle |
| JP2014210989A (en) * | 2013-04-18 | 2014-11-13 | 帝人株式会社 | Fine-denier modified cross-section hollow staple fiber, spun yarn using the same, woven or knitted fabric, and production method for fine-denier modified cross-section hollow fiber |
| JP2014210990A (en) * | 2013-04-18 | 2014-11-13 | 帝人株式会社 | Fine-denier porous hollow staple fiber, spun yarn using the same, woven or knitted fabric, and production method for fine-denier porous hollow fiber |
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