JP5053141B2 - Spun yarn and method for producing the same - Google Patents

Spun yarn and method for producing the same Download PDF

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JP5053141B2
JP5053141B2 JP2008078058A JP2008078058A JP5053141B2 JP 5053141 B2 JP5053141 B2 JP 5053141B2 JP 2008078058 A JP2008078058 A JP 2008078058A JP 2008078058 A JP2008078058 A JP 2008078058A JP 5053141 B2 JP5053141 B2 JP 5053141B2
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fiber
compound
spun yarn
fibers
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JP2009228185A (en
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健太郎 三谷
崇史 石原
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Unitika Trading Co Ltd
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本発明は、紡績糸及びその製造方法に関するものであり、詳しくは、蓄熱・保温効果と、天然繊維又は再生繊維が持つ独特の機能とを織編物に反映させることのできる紡績糸に関するものである。   The present invention relates to a spun yarn and a method for producing the spun yarn, and more particularly to a spun yarn that can reflect a heat storage and heat retention effect and a unique function of a natural fiber or recycled fiber on a woven or knitted fabric. .

従来からスポーツ、レジャー用衣料、防寒衣料などに保温性を付与するため、種々の検討がなされてきた。例えば、合成繊維使いの織編物においては、空気の断熱性を利用した中空繊維使いのものや、表地と裏地との間に中綿を挿入し、該中綿の保温効果を利用したものなどが提案されている。しかしながら、このような織編物は一般に厚みがあり、身体の動きに対し追従することが要求されるスポーツ衣料分野には、特に適さないという問題がある。また、アルミニウムやチタンなどの金属を蒸着した織編物を裏地として用いることにより、体からの放熱を減少させるといった技術も提案されているが、耐久性の点で課題を残している。   Conventionally, various studies have been made in order to impart heat retention to sports, leisure clothing, cold clothing, and the like. For example, for woven and knitted fabrics using synthetic fibers, those using hollow fibers that utilize the heat insulation of air, and those that use the warming effect of the padding by inserting padding between the outer material and the lining are proposed. ing. However, such a knitted or knitted fabric is generally thick and has a problem that it is not particularly suitable for the field of sports clothing that is required to follow the movement of the body. In addition, although a technique has been proposed in which heat dissipation from the body is reduced by using a woven or knitted fabric on which a metal such as aluminum or titanium is used as a backing, a problem remains in terms of durability.

天然繊維、再生繊維使いの織編物においても同様に保温性を付与する試みがある。一例として、繊維表面にカーボンブラックを固着したものが提案されている。しかしながら、カーボンブラックを固着させる際に使用するバインダー層と、繊維表面との接着不足に伴う界面剥離が発生するなど、上記同様耐久性に課題を残している。また、この繊維を使用した織編物は、一般に風合いが硬く、この点も未だ解決されていない。   There is also an attempt to impart heat retention to woven and knitted fabrics using natural fibers and recycled fibers. As an example, one in which carbon black is fixed to the fiber surface has been proposed. However, there remains a problem in durability as described above, such as interfacial peeling due to insufficient adhesion between the binder layer used for fixing carbon black and the fiber surface. In addition, a woven or knitted fabric using this fiber generally has a hard texture, and this point has not been solved yet.

これらの問題に対し、種々の提案がある。例えば、特許文献1では、周期律表第4族に属する遷移金属の炭化物をポリエステル繊維又はポリアミド繊維に含有させて、太陽光を吸収しかつ遠赤外線を放出させる技術が提案されている。   There are various proposals for these problems. For example, Patent Document 1 proposes a technique in which transition metal carbides belonging to Group 4 of the periodic table are contained in polyester fibers or polyamide fibers to absorb sunlight and emit far infrared rays.

また、特許文献2では、遠赤外線による保温効果に着目し、アルミナ系、ジルコニア系、マグネシア系、チタン系などのセラミックスを練り混んだ繊維状物を使用する技術が提案されている。これらのセラミックスは、遠赤外線を放射する機能を有する。   Patent Document 2 proposes a technique that uses a fibrous material in which ceramics such as alumina, zirconia, magnesia, and titanium are kneaded, paying attention to the heat retaining effect by far infrared rays. These ceramics have a function of emitting far infrared rays.

さらに、特許文献3では、吸湿発熱特性を有する天然繊維又は変性天然繊維を芯成分として配した吸湿発熱性複合紡績糸が提案されている。
特公平03−009202号公報 特開平01ー306607号公報 特開2003−293235号公報
Further, Patent Document 3 proposes a hygroscopic exothermic composite spun yarn in which natural fibers or hygroscopic exothermic properties or modified natural fibers are arranged as core components.
Japanese Patent Publication No. 03-009202 Japanese Patent Laid-Open No. 01-306607 JP 2003-293235 A

しかしながら、特許文献1にかかる技術において使用する周期律表第4族に属する遷移金属の炭化物は、一般に硬度7〜10と非常に硬く、これが繊維表面に露出していると、各工程において通糸ガイドを傷付ける恐れがある。そのため、かかる炭化物を繊維に練り込むときは、繊維の中心近傍にこれを配置させる必要がある。そうすると、繊度、断面形状などの設定におのずと制限が生じ、織編物に様々な機能性を付与できる中空繊維、極細繊維、異型断面繊維といった繊維が設計し難くなるという問題が残されている。   However, transition metal carbides belonging to Group 4 of the periodic table used in the technique according to Patent Document 1 are generally very hard with a hardness of 7 to 10, and when this is exposed on the fiber surface, the thread is passed through in each step. The guide may be damaged. Therefore, when kneading such a carbide into a fiber, it is necessary to arrange it near the center of the fiber. If it does so, a restriction | limiting arises in setting of a fineness, a cross-sectional shape, etc., and the problem that fibers, such as a hollow fiber which can provide various functionality to a knitted fabric, an ultrafine fiber, and an atypical cross-section fiber, becomes difficult.

また、特許文献2にかかる技術では、セラミックスが白色系であるために太陽光を十分に吸収しきれず、結果、奏される保温効果は満足できるものでない。   Moreover, in the technique concerning patent document 2, since ceramics are white type | system | groups, sunlight cannot fully be absorbed, and as a result, the heat retention effect show | played is not satisfactory.

さらに、特許文献3にかかる紡績糸は、具体的には、公定水分率15%の天然繊維を使用した吸湿発熱性複合紡績糸であり、天然繊維の機能を発揮するものの、太陽光による蓄熱効果を全く奏さないので、これも保温効果に問題を残している。   Furthermore, the spun yarn according to Patent Document 3 is specifically a hygroscopic exothermic composite spun yarn using a natural fiber with an official moisture content of 15%, which exhibits the function of natural fiber, but has a heat storage effect by sunlight. This also leaves a problem with the heat retention effect.

この様に、優れた蓄熱効果と、天然繊維や再生繊維などに特有の機能とを同時に織編物に反映させることのできる紡績糸は未だ提案されていないのが実情である。   Thus, the actual situation is that a spun yarn that can simultaneously reflect an excellent heat storage effect and a function unique to natural fibers, regenerated fibers, and the like in a woven or knitted fabric has not yet been proposed.

本発明は、上記の現状に鑑みてなされたものであり、太陽光による蓄熱・保温効果と、天然繊維又は再生繊維が持つ独特の機能とを同時に織編物に反映しうる、新規な紡績糸、並びにその紡績糸を効率よく製造するための方法を提供することを目的とするものである。   The present invention has been made in view of the above-mentioned present situation, a novel spun yarn that can simultaneously reflect the heat storage and heat retention effect by sunlight and the unique function of natural fiber or regenerated fiber in a woven or knitted fabric, An object of the present invention is to provide a method for efficiently producing the spun yarn.

本発明者らは、鋭意研究の結果、本発明に到達した。すなわち、本発明は、以下を要旨とするものである。
(1)シアニン化合物、フタロシアニン化合物、ジチオール金属錯体、ナフトキノン化合物、アントラキノン化合物、ジインモニウム化合物又はアゾ化合物からなる近赤外線吸収剤を備えてなる、繊維長30〜250mmの合成繊維を20〜90質量%含むと共に、天然繊維及び/又は再生繊維を80〜10質量%含んでなり、波長700〜850nmにおける反射率が50%以下であることを特徴とする紡績糸。
(2)前記合成繊維が、ポリエチレンテレフタレート、ナイロン6、ポリ乳酸のいずれかであることを特徴とする記載の紡績糸。
(3)シアニン化合物、フタロシアニン化合物、ジチオール金属錯体、ナフトキノン化合物、アントラキノン化合物、ジインモニウム化合物又はアゾ化合物からなる近赤外線吸収剤を含有する水分散液を用いて、繊維長30〜250mmの合成繊維を100〜135℃で湿熱処理し、乾燥後、当該合成繊維を20〜90質量%、天然繊維及び/又は再生繊維を80〜10質量%使用して紡績することを特徴とする紡績糸の製造方法。
As a result of intensive studies, the present inventors have reached the present invention. That is, the gist of the present invention is as follows.
(1) 20 to 90% by mass of a synthetic fiber having a fiber length of 30 to 250 mm, comprising a near-infrared absorber comprising a cyanine compound, a phthalocyanine compound, a dithiol metal complex, a naphthoquinone compound, an anthraquinone compound, a diimmonium compound or an azo compound A spun yarn comprising 80% to 10% by mass of natural fiber and / or recycled fiber, and having a reflectance of 50% or less at a wavelength of 700 to 850 nm.
(2) The spun yarn according to ( 1 ) , wherein the synthetic fiber is polyethylene terephthalate, nylon 6, or polylactic acid.
(3) 100 synthetic fibers having a fiber length of 30 to 250 mm using an aqueous dispersion containing a near-infrared absorber comprising a cyanine compound, a phthalocyanine compound, a dithiol metal complex, a naphthoquinone compound, an anthraquinone compound, a diimmonium compound or an azo compound. A method for producing a spun yarn, which is subjected to wet heat treatment at ˜135 ° C., dried and then spun using 20 to 90 mass% of the synthetic fiber and 80 to 10 mass% of natural fiber and / or recycled fiber.

本発明によれば、太陽光による蓄熱・保温効果と、天然繊維又は再生繊維が持つ独特の機能とを同時に織編物に付与できる紡績糸が提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the spun yarn which can provide the heat storage and heat retention effect by sunlight, and the unique function which a natural fiber or a reproduction | regeneration fiber has simultaneously to a woven / knitted fabric can be provided.

また、本発明の製造方法によれば、繊維表面に近赤外線吸収剤を付着させる方法を採用しているため、形状を問わずいかなる合成繊維でも実施可能となり、その結果、織編物に対し蓄熱効果以外の任意の特性を付与することが期待される。   In addition, according to the production method of the present invention, since a method of attaching a near-infrared absorber to the fiber surface is adopted, any synthetic fiber can be implemented regardless of the shape, and as a result, a heat storage effect on the woven / knitted fabric It is expected to impart any property other than.

以上の点から、本発明の紡績糸は、スポーツ、レジャー用衣料、防寒衣料の他、肌着、靴下、セーターなどへ好ましく適用できる。   In view of the above, the spun yarn of the present invention can be preferably applied to underwear, socks, sweaters, etc., in addition to sports and leisure clothing and cold clothing.

以下、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail.

本発明における近赤外線吸収剤としては、任意のものが使用できるものの、基本的には近赤外線領域(700〜2000nm)の光を吸収できるものが好ましく採用される。具体的には、シアニン化合物、フタロシアニン化合物、ジチオール金属錯体、ナフトキノン化合物、アントラキノン化合物、ジインモニウム化合物、アゾ化合物が用いられる。   As the near-infrared absorbing agent in the present invention, any can be used, but basically, those capable of absorbing light in the near-infrared region (700 to 2000 nm) are preferably employed. Specifically, cyanine compounds, phthalocyanine compounds, dithiol metal complexes, naphthoquinone compounds, anthraquinone compounds, diimmonium compounds, and azo compounds are used.

また、本発明における合成繊維としては、織編物としたとき、使用に耐えられるだけの強度を発揮するものであれば、特段限定されるものでない。ただ、用途の観点から、ポリエステル、ポリアミドが好ましい。中でもポリエステルにあっては、テレフタル酸ジメチル又はテレフタル酸と、エチレングリコールとの重縮合で得られるポリエチレンテレフタレートや、テレフタル酸ジメチルと、ブタンジオールとの重縮合で得られるポリブチレンテレフタレートなどが好ましく、特に、織編物の寸法安定性や製造コストの観点から、ポリエチレンテレフタレートが好ましい。また、環境問題を考慮するなら、ポリエステルとしてポリ乳酸を選択することも可能である。ポリ乳酸としては、一般的なポリL乳酸やポリD乳酸の他、両者を混合して得られるステレオコンプレックスなども有効である。   In addition, the synthetic fiber in the present invention is not particularly limited as long as it exhibits a strength sufficient to withstand use when it is woven or knitted. However, polyester and polyamide are preferable from the viewpoint of use. Among polyesters, polyethylene terephthalate obtained by polycondensation of dimethyl terephthalate or terephthalic acid and ethylene glycol, polybutylene terephthalate obtained by polycondensation of dimethyl terephthalate and butanediol, and the like are particularly preferable. Polyethylene terephthalate is preferable from the viewpoints of dimensional stability of the knitted or knitted fabric and production cost. In view of environmental problems, it is also possible to select polylactic acid as the polyester. As polylactic acid, in addition to general poly L lactic acid and poly D lactic acid, a stereocomplex obtained by mixing both is also effective.

一方、ポリアミドとしては、ヘキサメチレンジアミンとアジピン酸とを用いて得られるナイロン66、又はε‐カプロラクタムを開環重合して得られるナイロン6などが好ましく、特にコストの点でナイロン6が好ましい。   On the other hand, as the polyamide, nylon 66 obtained by using hexamethylenediamine and adipic acid, nylon 6 obtained by ring-opening polymerization of ε-caprolactam, and the like are preferable, and nylon 6 is particularly preferable in terms of cost.

本発明における合成繊維は、紡績糸を構成する一単位として使用されるため、特定の繊維長を有する必要がある。すなわち、繊維長として、30〜250mmの範囲を満足する必要があり、合成繊維の繊維長がこの範囲を外れると、均斉度ある紡績糸を得ることができない。   Since the synthetic fiber in the present invention is used as one unit constituting the spun yarn, it needs to have a specific fiber length. That is, it is necessary to satisfy the range of 30 to 250 mm as the fiber length. If the fiber length of the synthetic fiber is out of this range, a spun yarn with a uniform degree cannot be obtained.

また、かかる合成繊維の繊維径、断面形状などについては、特に限定こそされないが、一般に、繊維径としては3〜50μmの範囲が好ましく、断面形状としては丸断面の他、三角、六角、扁平といった異形断面、さらには中空断面などが好ましい。丸断面以外のものを採用すると、その繊維断面に応じた特性を織編物に付与することができる。例えば、中空断面を採用すると、織編物の軽量化が図れる。なお、本発明においては、これらの合成繊維を単独で使用する態様が一般的であるが、必要に応じて複数混合して使用してもよい。   Further, the fiber diameter and cross-sectional shape of the synthetic fiber are not particularly limited, but in general, the fiber diameter is preferably in the range of 3 to 50 μm, and the cross-sectional shape may be triangular, hexagonal, flat, etc. in addition to a round cross-section. An irregular cross section, a hollow cross section and the like are preferable. When a material other than a round cross section is employed, characteristics according to the fiber cross section can be imparted to the woven or knitted fabric. For example, if a hollow cross section is employed, the weight of the woven or knitted fabric can be reduced. In the present invention, these synthetic fibers are generally used alone, but a plurality of them may be used as necessary.

本発明の紡績糸は、上記の合成繊維を含むものである。しかしながら、これだけでは、所望の効果を得ることができない。そのため、これに加え天然繊維及び/又は再生繊維を使用する。   The spun yarn of the present invention contains the above synthetic fiber. However, the desired effect cannot be obtained by this alone. Therefore, in addition to this, natural fibers and / or recycled fibers are used.

本発明における天然繊維としては、綿、麻、羊毛、天然竹などがあげられ、再生繊維としては、溶剤紡糸セルロース繊維、ビスコースレーヨン、キュプラなどがあげられる。   Examples of natural fibers in the present invention include cotton, hemp, wool, and natural bamboo. Examples of regenerated fibers include solvent-spun cellulose fibers, viscose rayon, and cupra.

このように、本発明の紡績糸は、特定の合成繊維と、天然繊維及び/又は再生繊維とから構成されるものであるが、本発明の紡績糸における両繊維の含有比率としては、前者を20〜90質量%含有させると共に後者を80〜10質量%含有させる必要がある。両繊維の含有比率がこの範囲を外れると、蓄熱・保温効果と、天然繊維又は再生繊維が持つ独特の機能とを織編物にバランスよく反映させることができなくなる。   As described above, the spun yarn of the present invention is composed of a specific synthetic fiber and natural fiber and / or recycled fiber. The content ratio of both fibers in the spun yarn of the present invention is as follows. It is necessary to contain 20 to 90% by mass and the latter 80 to 10% by mass. If the content ratio of both fibers is out of this range, the heat storage / heat retention effect and the unique functions of natural fibers or recycled fibers cannot be reflected in a woven or knitted fabric in a balanced manner.

本発明の紡績糸は、このように優れた特性を織編物に付与することができるが、この内、蓄熱・保温効果については、単に前記両繊維を所定の比率に配合するだけでは足りず、最終的に得られる紡績糸の、波長700nm〜850nmにおける反射率を50%以下とする必要がある。これは、反射率が50%を超えると、光を熱エネルギーに十分変換できなくなるからである。つまり、織編物に対し蓄熱・保温効果を付与するには、当該紡績糸が、上記両繊維を特定比率で含有していると同時に特定の反射率を具備していることが必要となる。言い換えれば、かかる蓄熱・保温効果は、この2構成が機能的又は作用的に関連して奏されるものであり、いわゆる2構成による相乗効果ともいえる。   The spun yarn of the present invention can impart such excellent properties to the woven or knitted fabric, but among these, for the heat storage and heat retention effect, it is not sufficient to simply blend the two fibers in a predetermined ratio, The spun yarn finally obtained must have a reflectance of 50% or less at a wavelength of 700 nm to 850 nm. This is because if the reflectance exceeds 50%, light cannot be sufficiently converted into heat energy. In other words, in order to impart a heat storage / warming effect to the woven or knitted fabric, the spun yarn needs to contain both the fibers at a specific ratio and at the same time have a specific reflectance. In other words, the heat storage / heat retention effect is obtained by functionally or functionally relating the two configurations, and can be said to be a synergistic effect by the so-called two configurations.

次に、本発明の保温繊維の製造方法について説明する。   Next, the manufacturing method of the heat retention fiber of this invention is demonstrated.

まず、バラ毛、トウ又はスライバ状の繊維長30〜250mmの合成繊維を用意し、バラ毛染色機、オーバーマイヤー染色機などでもって、近赤外線吸収剤を含有する水分散液を用いて該合成繊維を湿熱処理する。水分散液中には、近赤外線吸収剤を均一に分散させる観点から、界面活性剤を含ませることが好ましく、かかる界面活性剤としては、ノニオン系、アニオン系、カチオン系のいずれも使用可能である。水分散液を使用して合成繊維を湿熱処理する目的は、近赤外線吸収剤を合成繊維に付着させることにあり、いうまでもなく、繊維表面にだけかかる吸収剤を付着させても勿論所定の蓄熱・保温効果を奏することができる。しかしながら、より高い効果を具現するには、繊維表面と共に繊維内部へ近赤外線吸収剤を吸尽させるのが好ましく、この点から、本発明では、界面活性剤として近赤外線吸収剤の吸尽効果に優れた、ノニオン系及び/又はアニオン系からなるものを採用することが好ましい。   First, a synthetic fiber having a fiber length of 30 to 250 mm in the form of rose hair, tow or sliver is prepared, and this synthesis is carried out by using an aqueous dispersion containing a near-infrared absorber with a rose hair dyeing machine, an overmeier dyeing machine, or the like. Wet heat-treat the fibers. The aqueous dispersion preferably contains a surfactant from the viewpoint of uniformly dispersing the near-infrared absorber, and as the surfactant, any of nonionic, anionic and cationic can be used. is there. The purpose of the wet heat treatment of the synthetic fiber using the aqueous dispersion is to attach the near-infrared absorbent to the synthetic fiber. Needless to say, even if such an absorbent is attached only to the fiber surface, it is of course predetermined. Heat storage and heat retention effects can be achieved. However, in order to realize a higher effect, it is preferable to exhaust the near infrared absorber into the fiber together with the fiber surface. From this point, in the present invention, the near infrared absorber is exhausted as a surfactant. It is preferable to employ an excellent nonionic and / or anionic one.

水分散液中には、この他にも、合成繊維の耐光性を向上させる観点から紫外線吸収剤や、その他目的に応じた各種機能性付与剤を含有させてもよい。   In addition to this, from the viewpoint of improving the light resistance of the synthetic fiber, the aqueous dispersion may contain an ultraviolet absorber and other various function-imparting agents according to the purpose.

本発明では、かかる湿熱処理を100〜135℃の温度下で行う。湿熱処理の温度が100℃未満になると、近赤外線吸収剤を繊維に固着させ難くなり、その結果、織編物に対し蓄熱・保温効果を付与させ難くなるので好ましくない。一方、135℃を超えると、合成繊維が熱によって脆化しやすくなり、その結果、糸質物性が低下することがあるので好ましくない。また、上記熱処理の時間としては、一般に10〜60分間が好ましい。   In the present invention, such wet heat treatment is performed at a temperature of 100 to 135 ° C. When the temperature of the wet heat treatment is less than 100 ° C., it is difficult to fix the near-infrared absorbent to the fiber, and as a result, it is difficult to impart a heat storage / heat retaining effect to the woven or knitted fabric, which is not preferable. On the other hand, when the temperature exceeds 135 ° C., the synthetic fiber is easily embrittled by heat, and as a result, the physical properties of the yarn may be deteriorated. The heat treatment time is generally preferably 10 to 60 minutes.

合成繊維を湿熱処理した後は、繊維を乾燥させ、その後、得られた合成繊維と、予め準備した天然繊維及び/又は再生繊維とを用いて紡績する。紡績する際の両繊維の使用比率としては、合成繊維が20〜90質量%であり、天然繊維及び/又は再生繊維が80〜10質量%である。   After the wet heat treatment of the synthetic fiber, the fiber is dried, and then the resultant synthetic fiber is spun using the natural fiber and / or regenerated fiber prepared in advance. As a use ratio of both fibers at the time of spinning, the synthetic fiber is 20 to 90% by mass, and the natural fiber and / or the regenerated fiber is 80 to 10% by mass.

紡績とは、繊維塊を紡ぎ、糸となすことをいい、具体的には、繊維塊に対しドラフトを繰り返し、繊維を除々に平行に配列させ、撚りを掛けて細く強い糸となす。   Spinning refers to spinning a fiber lump into a yarn. Specifically, the draft is repeated on the fiber lump, the fibers are gradually arranged in parallel, and twisted to form a thin and strong yarn.

紡績は一般に複数の工程からなるものであり、用いる繊維の長さによって若干ながら異なった工程を経る。一般に繊維長が30〜50mmのときは綿紡績法を、40〜250mmのときは梳毛紡績法を採用するが、同じ紡績方法でも、目的に応じて工程数が多少異なることがある。しかし、いずれの紡績方法であっても、基本的な工程は共通している。すなわち、開繊する混打綿工程、繊維を除塵・平行化する梳綿工程、太い繊維束を均斉化する練糸工程、ドラフトを掛け繊維束を細くする粗紡工程、及びドラフトを掛けながら撚りを掛ける精紡工程を順次経て紡績する点では共通しており、この基本工程に基づいて採用すべき工程を設計することは、当業者であれば容易である。   Spinning generally consists of a plurality of processes, and undergoes slightly different processes depending on the length of the fiber used. In general, the cotton spinning method is adopted when the fiber length is 30 to 50 mm, and the worsted spinning method is adopted when the fiber length is 40 to 250 mm. However, even in the same spinning method, the number of steps may be slightly different depending on the purpose. However, the basic process is the same in any spinning method. That is, a mixed cotton process for opening fibers, a carding process for removing and collimating fibers, a kneading process for homogenizing thick fiber bundles, a roving process for narrowing fiber bundles by drafting, and twisting while drafting It is common in that spinning is performed sequentially through the spinning steps to be applied, and it is easy for those skilled in the art to design a process to be adopted based on this basic process.

本発明の紡績糸は、以上のようにして得ることができるが、紡績糸の形態としては、目的に応じて種々の形態をとることが可能であり、具体的には、混紡構造、二層構造、海島構造などがあげられる。   Although the spun yarn of the present invention can be obtained as described above, the spun yarn can take various forms depending on the purpose. Structure, sea-island structure, etc.

次に、本発明を実施例により具体的に説明する。ただし、本発明は以下の実施例に限定されるものではない。   Next, the present invention will be specifically described with reference to examples. However, the present invention is not limited to the following examples.

(実施例1)
まず、繊維長が80mmで、繊維径が14μmである、中空率40%の中空断面ポリエステル繊維からなるスライバを準備した。次いで、コイリング運動を利用して、このスライバを下部から重ね合わせ、圧縮してバンプ巻きとした。
Example 1
First, a sliver made of a hollow cross-section polyester fiber having a fiber length of 80 mm and a fiber diameter of 14 μm and a hollow ratio of 40% was prepared. Then, using a coiling motion, the sliver was overlapped from below and compressed to form a bump.

そして、このバンプ巻きをキャリヤーに装填し、オーバーマイヤー染色機を用いて、下記処方1に示す組成の水分散液でもって、浴比1:10、130℃の温度下で30分間該バンプ巻きを湿熱処理した。   Then, this bump winding is loaded into a carrier, and the bump winding is carried out for 30 minutes at a bath ratio of 1:10 and a temperature of 130 ° C. with an aqueous dispersion having the composition shown in the following formula 1 using an Overmeier dyeing machine. Wet heat treatment.

〈処方1〉
近赤外線吸収剤(日本化薬(株)製「KP DEEPER NR(商品名)」 6%owf
界面活性剤(日華化学(株)製「ニッカサンソルトRN130E(商品名)」) 0.5g/L
酢酸 0.1cc/L
<Prescription 1>
Near-infrared absorber (“KP DEEPER NR (trade name)” manufactured by Nippon Kayaku Co., Ltd. 6% owf
Surfactant (“Nikkasan Salt RN130E (trade name)” manufactured by Nikka Chemical Co., Ltd.) 0.5 g / L
Acetic acid 0.1cc / L

続いて、同オーバーマイヤー染色機を用いてバンプ巻きを洗浄、オイリングし、さらにスライバをマングルにて脱水、開繊し、コンベヤ式乾燥機にて乾燥した。   Subsequently, the bump winding was washed and oiled using the Overmeyer dyeing machine, and the sliver was dehydrated and opened with a mangle and dried with a conveyor dryer.

次に、得られたスライバと、羊毛繊維からなるスライバとを順に質量比30:70で混紡し、粗糸を得た。得られた粗糸を、精紡機に対しシングルロービングなる形で供給し、20倍のドラフトを与えながら660回/mで加撚し、紡績単糸を得た。   Next, the obtained sliver and a sliver made of wool fibers were sequentially blended at a mass ratio of 30:70 to obtain a roving yarn. The obtained roving was supplied to the fine spinning machine in the form of single roving and twisted at 660 times / m while giving a draft of 20 times to obtain a spun single yarn.

その後、上記紡績単糸を2本用いて690回/mで合撚し、合成繊維を30質量%、天然繊維を70質量%含んでなる、太さ40番手(メートル番手)の本発明の紡績糸を得た。   Thereafter, the above spinning single yarn is used and twisted at 690 times / m, the spinning of the present invention having a thickness of 40 (metric) and 30% by weight of synthetic fiber and 70% by weight of natural fiber. I got a thread.

(比較例1)
近赤外線吸収剤を付着させた中空断面ポリエステル繊維に代えて、芯部に炭化ジルコニウムを2質量%含有してなる、芯鞘構造の丸断面中実ポリエステル繊維(繊維長80mm、繊維径14μm)を用いる以外は、実施例1と同様の方法にて、太さ40番手(メートル番手)の紡績糸を得た。
(Comparative Example 1)
Instead of a hollow cross-section polyester fiber to which a near-infrared absorber is attached, a solid cross-section solid polyester fiber (fiber length of 80 mm, fiber diameter of 14 μm) having a core-sheath structure containing 2% by mass of zirconium carbide in the core portion. A spun yarn having a thickness of 40 (metric) was obtained in the same manner as in Example 1 except that it was used.

(実施例2)
まず、繊維長が38mmで、繊維径が14μmの丸断面中実ポリエステル繊維をバラ染め用キャリアーに装填し、次いで、オーバーマイヤー染色機を用いて、上記記処方1中の近赤外線吸収剤の濃度を6%owfに代えて4%owfとした組成の水分散液でもって、浴比1:10、135℃の温度下で30分間該繊維を湿熱処理した。
(Example 2)
First, a solid polyester fiber having a round cross section with a fiber length of 38 mm and a fiber diameter of 14 μm was loaded into a carrier for dyeing rose, and then the concentration of the near-infrared absorber in the above-mentioned prescription 1 using an overmeier dyeing machine. The fiber was wet-heat treated with an aqueous dispersion having a composition of 4% owf instead of 6% owf for 30 minutes at a bath ratio of 1:10 and a temperature of 135 ° C.

続いて、同オーバーマイヤー染色機を用いて繊維を洗浄、オイリングし、さらにマングルにて脱水し、バッチ式乾燥機にて乾燥した。   Subsequently, the fibers were washed and oiled using the same Overmeyer dyeing machine, dehydrated with mangles, and dried with a batch dryer.

次に、得られたポリエステル繊維と、綿繊維とを順に質量比65:35で混紡し、太さ0.5g/m、撚数0.8回/mの粗糸を得た。得られた粗糸を、精紡機に対しシングルロービングなる形で供給し、35倍のドラフトを与えながら23回/2.54cmで加撚し、合成繊維を65質量%、天然繊維を35質量%含んでなる、太さ40番手(英式綿番手)の本発明の紡績糸を得た。   Next, the obtained polyester fiber and cotton fiber were blended in order at a mass ratio of 65:35 to obtain a roving yarn having a thickness of 0.5 g / m and a twist number of 0.8 times / m. The obtained roving is supplied to the spinning machine in the form of single roving, twisted 23 times / 2.54 cm while giving a draft of 35 times, 65% by mass of synthetic fiber and 35% by mass of natural fiber A spun yarn of the present invention having a thickness of 40 (English cotton count) was obtained.

(比較例2)
水分散液を使用した湿熱処理を省略する以外は、実施例2と同様の方法にて、太さ40番手(英式綿番手)の紡績糸を得た。
(Comparative Example 2)
A spun yarn having a thickness of 40 (English cotton count) was obtained in the same manner as in Example 2 except that the wet heat treatment using the aqueous dispersion was omitted.

(実施例3)
まず、丸断面中実ポリエステル繊維に代えて、繊維長38mm、繊維径5μmの丸断面中実ナイロン6繊維を用いること、並びに湿熱処理温度を135℃に代えて100℃とする以外は実施例2と同様にして繊維を湿熱処理し、続いて、同じく同様に繊維を洗浄、オイリング、脱水及び乾燥した。
(Example 3)
First, Example 2 except that solid nylon 6 fiber having a round length of 38 mm and a fiber diameter of 5 μm is used instead of solid polyester fiber having a round cross section, and the wet heat treatment temperature is set to 100 ° C. instead of 135 ° C. The fiber was wet-heat treated in the same manner as described above, and then the fiber was similarly washed, oiled, dehydrated and dried.

次に、得られたナイロン6繊維と、溶剤紡糸セルロース繊維とを順に質量比50:50で混紡し、太さ0.5g/m、撚数0.8回/mの粗糸を得、以降は実施例2と同様の方法で精紡し、合成繊維を50質量%、天然繊維を50質量%含んでなる、太さ40番手(英式綿番手)の本発明の紡績糸を得た。   Next, the obtained nylon 6 fiber and solvent-spun cellulose fiber were sequentially blended at a mass ratio of 50:50 to obtain a roving yarn having a thickness of 0.5 g / m and a twist number of 0.8 times / m. Was spun in the same manner as in Example 2 to obtain a spun yarn of the present invention having a thickness of 40 (English cotton count) comprising 50% by mass of synthetic fiber and 50% by mass of natural fiber.

(比較例3)
近赤外線吸収剤を付着させた丸断面中実ナイロン6繊維に代えて、芯部に炭化ジルコニウムを2質量%含有してなる、繊維長38mm、繊維径16μmの芯鞘構造の丸断面中実ナイロン6繊維を用いる以外は、実施例3と同様の方法にて、太さ40番手(メートル番手)の紡績糸を得た。
(Comparative Example 3)
Instead of a solid nylon 6 fiber with a round cross section to which a near-infrared absorber is attached, a solid cross-section solid nylon with a core sheath structure having a fiber length of 38 mm and a fiber diameter of 16 μm, containing 2% by mass of zirconium carbide in the core part. A spun yarn having a thickness of 40 (metric) was obtained in the same manner as in Example 3 except that 6 fibers were used.

以上で得られた紡績糸につき、下記項目を下記基準で評価した。その結果を表1に示す。   About the spun yarn obtained above, the following items were evaluated according to the following criteria. The results are shown in Table 1.

1.反射率
(株)小池機械製作所製筒編機を用いて対象となる紡績糸を筒編地とした後、分光光度計を使用して、編地の、波長700〜850nmの反射率を測定し、これを紡績糸の反射率とした。
1. Reflectivity After making the target spun yarn into a tubular knitted fabric using a cylinder knitting machine manufactured by Koike Machinery Co., Ltd., the reflectance of the knitted fabric with a wavelength of 700 to 850 nm is measured using a spectrophotometer. This was taken as the reflectance of the spun yarn.

2.蓄熱・保温効果
厚さ10mmの発砲ポリスチレンボードに100mm四方の窓を設け、その窓を覆うようにして、上記の筒編地を取り付ける。次に、照度100000Lux、気温20℃の屋外において、上記筒編地に対し太陽光が直射するようにボードを傾け、筒編地裏面の温度を、NEC三栄(株)製赤外線熱画像装置「サーモトレーサTH7102(商品名)」で観察し、平衡に達したときの温度を測定する。この温度を蓄熱・保温効果を評価する際の基準とした。
2. Heat storage and heat retention effect A 100 mm square window is provided on a foamed polystyrene board having a thickness of 10 mm, and the cylindrical knitted fabric is attached so as to cover the window. Next, in an outdoor environment with an illuminance of 100000 Lux and an air temperature of 20 ° C., the board is tilted so that sunlight directly strikes the tubular knitted fabric, and the temperature of the back surface of the tubular knitted fabric is determined by the infrared thermal imaging device “Thermo” manufactured by NEC Sanei Co., Ltd. Observe with "Tracer TH7102 (trade name)" and measure the temperature when equilibrium is reached. This temperature was used as a standard for evaluating the heat storage / heat retention effect.

3.風合い
上記筒編地を官能検査により、○(優)から×(劣)の3段階で評価した。
3. Texture The above-mentioned tubular knitted fabric was evaluated by a sensory test in three stages from ○ (excellent) to × (poor).

表1からわかるように、本発明の紡績糸を用いた筒編地は、蓄熱・保温効果だけでなく天然繊維又は再生繊維が持つ独特の機能、風合いも併せ持つものであった。   As can be seen from Table 1, the tubular knitted fabric using the spun yarn of the present invention has not only a heat storage and heat retention effect but also a unique function and texture of natural fibers or recycled fibers.

なお、各合成繊維の湿熱処理については、工程上、特段問題などは発生せず、効率よく実施することができた。   In addition, the wet heat treatment of each synthetic fiber did not cause any particular problems in the process and could be carried out efficiently.

また、上記実施例のうち、実施例1では、紡績糸中の合成繊維として中空断面ポリエステル繊維を用いたため、筒編地の軽量化も達成できた。
Of the above examples, in Example 1, since the hollow cross-sectional polyester fiber was used as the synthetic fiber in the spun yarn, the weight of the tubular knitted fabric could also be achieved.

Claims (3)

シアニン化合物、フタロシアニン化合物、ジチオール金属錯体、ナフトキノン化合物、アントラキノン化合物、ジインモニウム化合物又はアゾ化合物からなる近赤外線吸収剤を備えてなる、繊維長30〜250mmの合成繊維を20〜90質量%含むと共に、天然繊維及び/又は再生繊維を80〜10質量%含んでなり、波長700〜850nmにおける反射率が50%以下であることを特徴とする紡績糸。 20% to 90% by mass of a synthetic fiber having a fiber length of 30 to 250 mm, comprising a near infrared absorber comprising a cyanine compound, a phthalocyanine compound, a dithiol metal complex, a naphthoquinone compound, an anthraquinone compound, a diimmonium compound or an azo compound , and natural A spun yarn comprising 80 to 10% by mass of fibers and / or recycled fibers, and having a reflectance at a wavelength of 700 to 850 nm of 50% or less. 前記合成繊維が、ポリエチレンテレフタレート、ナイロン6、ポリ乳酸のいずれかであることを特徴とする請求項1記載の紡績糸。   The spun yarn according to claim 1, wherein the synthetic fiber is polyethylene terephthalate, nylon 6, or polylactic acid. シアニン化合物、フタロシアニン化合物、ジチオール金属錯体、ナフトキノン化合物、アントラキノン化合物、ジインモニウム化合物又はアゾ化合物からなる近赤外線吸収剤を含有する水分散液を用いて、繊維長30〜250mmの合成繊維を100〜135℃で湿熱処理し、乾燥後、当該合成繊維を20〜90質量%、天然繊維及び/又は再生繊維を80〜10質量%使用して紡績することを特徴とする紡績糸の製造方法。 Using an aqueous dispersion containing a near-infrared absorber comprising a cyanine compound, a phthalocyanine compound, a dithiol metal complex, a naphthoquinone compound, an anthraquinone compound, a diimmonium compound or an azo compound, a synthetic fiber having a fiber length of 30 to 250 mm is converted to 100 to 135 ° C. A method for producing a spun yarn, wherein the synthetic fiber is spun using 20 to 90% by mass, natural fiber and / or regenerated fiber is used in an amount of 80 to 10% by mass.
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CN108532318A (en) * 2014-09-23 2018-09-14 江苏丹毛纺织股份有限公司 Reflecting far-infrared ray, the heat storing and heat preserving worsted fabric for promoting blood circulation of human body
CN108560290A (en) * 2014-09-23 2018-09-21 江苏丹毛纺织股份有限公司 Promote the heat storing and heat preserving worsted fabric of blood circulation of human body
CN106192111A (en) * 2016-08-17 2016-12-07 怀宁县太阳家纺有限公司 A kind of ventilative bath robe fabric

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