JP2000328384A - Composite spun yarn and cloth by using the same - Google Patents
Composite spun yarn and cloth by using the sameInfo
- Publication number
- JP2000328384A JP2000328384A JP11140912A JP14091299A JP2000328384A JP 2000328384 A JP2000328384 A JP 2000328384A JP 11140912 A JP11140912 A JP 11140912A JP 14091299 A JP14091299 A JP 14091299A JP 2000328384 A JP2000328384 A JP 2000328384A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- spun yarn
- aramid
- core
- sheath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、染色性、耐切創
性、耐熱性に優れた芯鞘型複合紡績糸および該紡績糸を
用いてなるプリーツ性、防しわ性などの形態保持性に優
れ、仕立て栄えの良好な布帛に関する。さらに詳しく
は、切創、擦過溶融、火傷の危険の高い職場に用いられ
る防護被服やアウトドアスポーツなどの過酷な環境下で
着用に耐える防護被服素材として好適な芯鞘型複合紡績
糸および布帛に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core-sheath composite spun yarn having excellent dyeing properties, cut resistance and heat resistance, and excellent pleating properties and wrinkle-preventing properties of the spun yarn. And a fabric with good tailoring. More specifically, the present invention relates to a core-sheath type composite spun yarn and fabric suitable as a protective garment used in workplaces where there is a high risk of cuts, abrasion, and burns, or a protective garment material that can be worn under severe environments such as outdoor sports.
【０００２】[0002]
【従来の技術】近年では、作業効率化、高速化、省力化
が進み、労働、交通災害の危険性が高くなり人命尊重の
観点からも安全性向上が強く望まれている。一方、スポ
ーツにおいても多岐に渡り参加人数も増え活発になり、
スノーボード、フィッシング、登山などのアウトドアス
ポーツへの参加人口の伸びが著しく、それにともないス
ポーツ衣料素材も従来以上に耐久性、機能性が要求され
るようになり、特に、耐切創性、耐熱性などの機能性に
優れ、プリーツ性、防しわ性、形態保持性、カラフルな
色彩などの審美性の優れたものが望まれている。また、
溶接や製鉄工場などで用いる耐熱作業服や消防防火服等
においても高度の耐熱性が要求されている。2. Description of the Related Art In recent years, work efficiency, speeding up, and labor saving have been progressing, and the danger of labor and traffic accidents has increased. Therefore, there is a strong demand for safety improvement from the viewpoint of respect for human life. On the other hand, in sports as well, the number of participants increased and became active,
The participation in outdoor sports such as snowboarding, fishing and mountain climbing has been remarkably growing, and as a result sports clothing materials have become more demanding in durability and functionality than ever, especially in cut resistance, heat resistance, etc. What has excellent esthetics, such as pleating property, wrinkle resistance, form retention, and colorful color, is desired. Also,
High heat resistance is also required for heat-resistant work clothes, fire and fire protection clothes, and the like used in welding and steel mills.
【０００３】これに対して、耐切創性に優れ、耐熱性が
高く、耐薬品性、糸強度が高い全芳香族ポリアミド繊維
が幅広く用いられるている。例えば、パラ系アラミド繊
維１００％のフィラメント糸や紡績糸を部分的に用いて
交織したものが、実公平１−３６６００号公報や特公昭
６２−２６９００号公報、特開平２−２９２０３６号公
報などで提案されている。[0003] On the other hand, wholly aromatic polyamide fibers having excellent cut resistance, high heat resistance, high chemical resistance and high yarn strength are widely used. For example, those obtained by partially weaving partially using filament yarn or spun yarn of 100% para-aramid fiber are disclosed in Japanese Utility Model Publication No. 1-36006, Japanese Patent Publication No. 62-26900, and Japanese Patent Application Laid-Open No. 2-292,036. Proposed.
【０００４】これらはいずれも引裂抵抗性、耐切創性は
向上するが、パラ系アラミド繊維は本質的に耐熱性繊維
であるがため熱セット性が乏しく、縫製された衣服の仕
立て栄え、着用中のプリーツの消去としわの発生という
形態保持性が劣る欠点がある。また一般に、パラ系アラ
ミド繊維等の高強力繊維は、耐切創性、耐熱性に優れて
いるが、結晶性が高く、分子間結合力が強固で緻密な分
子構造を有しているため染色性が悪く、他の汎用繊維に
適用される染色技術により染色するのが困難であるの
で、パラ系アラミド繊維の染色はほとんど実施されてい
ないのが現状であり、次のような改善手段の提案がなさ
れている。[0004] All of these improve tear resistance and cut resistance, but para-aramid fibers are inherently heat-resistant fibers and thus have poor heat-setting properties. There is a disadvantage in that the shape retention is poor, such as the elimination of pleats and the generation of wrinkles. In general, high-strength fibers such as para-aramid fibers are excellent in cut resistance and heat resistance, but have high crystallinity, strong intermolecular bonding force and a dense molecular structure, Is poor, and it is difficult to dye by the dyeing technology applied to other general-purpose fibers.Therefore, at present, dyeing of para-aramid fibers is hardly carried out. It has been done.
【０００５】特開平３−８３０号公報では、芯部にパラ
系アラミド繊維、鞘部にポリエステル繊維を配置した芯
鞘型複合紡績糸やポリエステル短繊維とパラ系アラミド
繊維の均一混紡の特開平６−２２０７３０号公報、ポリ
エステル短繊維と芳香族ポリアミド繊維とセルロース系
繊維の均一混紡の特開平４−５０３４０号公報が提案さ
れている。しかしながら、これら提案の従来技術では染
色が困難であったパラ系アラミド繊維の布帛表面への出
現があり、濃色染めやカラフルな色相への染色性に問題
があり、従来の染色設備が使用できないなどの問題を有
していた。Japanese Patent Application Laid-Open No. Hei 3-830 discloses a core-sheath type composite spun yarn in which para-aramid fibers are disposed in a core portion and polyester fibers in a sheath portion, and a uniform blend of polyester short fibers and para-aramid fibers. Japanese Patent Application Laid-Open No. 4-50340 proposes a uniform blend of polyester short fiber, aromatic polyamide fiber and cellulosic fiber. However, para-aramid fibers, which have been difficult to dye with the proposed prior art, have appeared on the fabric surface, and there is a problem in the dyeability of deep dyeing and colorful hues, and conventional dyeing equipment cannot be used. Had such a problem.
【０００６】一方、紡糸原液に顔料や染料を添加して着
色する原液着色の手段があるが、色数の制限があり、顧
客毎の色相の対応は困難である。On the other hand, there is a means for coloring a stock solution in which a pigment or dye is added to a stock solution for coloring, but the number of colors is limited, and it is difficult to deal with the hue of each customer.
【０００７】アラミド繊維とポリエステル繊維やセルロ
ース系繊維との均一混紡は染料の種類の異なるそれぞれ
の繊維が混紡糸表面に出現するので色相の統一性におい
て問題がある。また、切創抵抗の低いポリエステル繊維
やセルロース系繊維が布帛表面にも出現するのでパラ系
アラミド繊維１００％布帛と比較すると耐切創性、耐熱
性が劣るのが現状である。[0007] Uniform blending of aramid fiber with polyester fiber or cellulosic fiber has a problem in uniformity of hue since fibers of different dye types appear on the blended yarn surface. In addition, since polyester fibers and cellulosic fibers having low cut resistance also appear on the surface of the cloth, cut resistance and heat resistance are currently inferior to those of 100% para-aramid fiber cloth.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、上記の欠点
を解決せんとするものであって、炎や高温にさらされる
作業である消防服や高熱作業服において、耐熱、切創な
どの機能を充分に発揮し、仕立て栄え、プリーツ保持
性、防しわ性などの形態保持性に優れ、濃色に染まり、
カラフルで鮮明な色彩に染色可能な審美性をも兼ね備え
たアウトドアスポーツ衣料や防護被服用素材を安定的に
供給することが可能な芯鞘型複合紡績糸、および布帛を
提供するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and is intended to provide functions such as heat resistance and cut wounds in fire-fighting clothes and high-heat work clothes which are to be exposed to flames and high temperatures. It has excellent shape retention such as tailoring, pleat retention, and wrinkle resistance, and is dyed dark.
An object of the present invention is to provide a core-sheath type composite spun yarn and a fabric capable of stably supplying materials for outdoor sports clothing and protective clothing, which also have an aesthetic property capable of being dyed in colorful and vivid colors.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成する本発
明の芯鞘型複合紡績糸は、次の構成からなる。すなわ
ち、 （１）芯鞘型複合紡績糸であって、少なくとも染色され
た全芳香族ポリアミド短繊維を含む鞘成分が５０〜７０
重量％で構成され、少なくともポリエステル短繊維を含
む芯成分が３０〜５０重量％で構成されてなるととも
に、前記染色された全芳香族ポリアミド短繊維の紡績糸
に占める割合が５０〜９０重量％であり、かつポリエス
テル短繊維の紡績糸に占める割合が１０〜３５重量％で
あることを特徴とする芯鞘型複合紡績糸。The core-sheath composite spun yarn of the present invention that achieves the above object has the following constitution. That is, (1) a core-sheath type composite spun yarn in which a sheath component containing at least a dyed wholly aromatic polyamide short fiber is 50 to 70.
% Of the core component containing at least polyester short fiber is 30 to 50% by weight, and the ratio of the dyed wholly aromatic polyamide short fiber to the spun yarn is 50 to 90% by weight. A core-sheath type composite spun yarn, characterized in that the ratio of the polyester short fiber to the spun yarn is 10 to 35% by weight.
【００１０】（２）鞘成分の染色された全芳香族ポリア
ミド短繊維がパラ系アラミド短繊維であることを特徴と
する前記（１）に記載の芯鞘型複合紡績糸。(2) The core-sheath type composite spun yarn according to the above (1), wherein the wholly aromatic polyamide short fiber dyed in the sheath component is a para-aramid short fiber.
【００１１】（３）鞘成分の全芳香族ポリアミド短繊維
が染色されたパラ系アラミド短繊維とメタ系アラミド短
繊維との混紡されたものであることを特徴とする前記
（１）に記載の芯鞘型複合紡績糸。(3) The above-mentioned (1), wherein the wholly aromatic polyamide staple fiber of the sheath component is a blend of a dyed para-aramid staple fiber and a meta-aramid staple fiber. Core-sheath composite spun yarn.
【００１２】（４）鞘成分の染色されたパラ系アラミド
短繊維がポリパラフェニレンテレフタルアミド（ＰＰＴ
Ａ）短繊維であることを特徴とする前記（２）または
（３）のいずれかに記載の芯鞘型複合紡績糸。(4) The para-aramid short fibers dyed in the sheath component are polyparaphenylene terephthalamide (PPT).
A) The core-sheath composite spun yarn according to any one of the above (2) or (3), which is a short fiber.
【００１３】（５）染色されたパラ系アラミド短繊維が
紡績糸に占める割合が２５〜９０重量％、メタ系アラミ
ド短繊維が紡績糸に占める割合が６０重量％以下である
ことを特徴とする前記（３）に記載の芯鞘型複合紡績
糸。(5) The ratio of the dyed para-aramid short fibers to the spun yarn is 25 to 90% by weight, and the ratio of the meta-aramid short fibers to the spun yarn is 60% by weight or less. The core-sheath composite spun yarn according to (3).
【００１４】（６）芯成分に染色された全芳香族ポリア
ミド短繊維を２０重量％以内、鞘成分にメタ系アラミド
短繊維を２５〜５０重量％混紡したことを特徴とする前
記（１）〜（５）のいずれかに記載の芯鞘型複合紡績
糸。(6) The above-mentioned (1) to (1) to (2), characterized in that the core component is blended with not more than 20% by weight of a wholly aromatic polyamide short fiber dyed in the core component and 25 to 50% by weight of a meta-aramid short fiber in the sheath component. The core-sheath composite spun yarn according to any one of (5).
【００１５】（７）芯成分がポリエステル短繊維１００
重量％、またはポリエステル短繊維と、染色された全芳
香族ポリアミド短繊維、天然繊維およびセルロース系繊
維の少なくとも１種から選ばれた繊維との混紡糸である
ことを特徴とする前記（１）〜（６）のいずれかに記載
の芯鞘型複合紡績糸。(7) The core component is polyester short fiber 100
(1) to (1) to (1) to (1) to (1), wherein the blended yarn is a blended fiber of at least one selected from the group consisting of a polyester staple fiber, a dyed wholly aromatic polyamide staple fiber, a natural fiber and a cellulosic fiber. (6) The core-sheath composite spun yarn according to any of (6).
【００１６】（８）パラ系アラミド短繊維が、５以上の
固有粘度ＩＶ（ηinh ）を持つＰＰＴＡと濃硫酸から紡
糸用ドープをつくり、該ドープを紡糸口金の細孔を通し
て一旦空気中に紡出し、直ちに水中に導き凝固させ、高
強度、高弾性率のフィラメントを形成する工程と、該フ
ィラメントに捲縮を与えカットしてステープルとなす工
程と、該フィラメントを染色する工程を連続することな
く別々の工程で実施する方法において、染色前のパラ系
アラミド繊維の引張強度が１５ｇ／ｄ以上、結晶サイズ
（１１０方向）が３０〜５５オングストロームであり、
染色前の水分含量が常に８％以上に維持して形成された
ものであることを特徴とする前記（２）〜（７）のいず
れかに記載の芯鞘型複合紡績糸。(8) A para-aramid staple fiber is made into a dope for spinning from PPTA having an intrinsic viscosity IV (ηinh) of 5 or more and concentrated sulfuric acid, and the dope is once spun into the air through pores of a spinneret. Immediately leading to water and solidifying to form a filament of high strength and high elastic modulus, a step of crimping the filament to form a staple by cutting, and a step of dyeing the filament without being continuous The tensile strength of the para-aramid fiber before dyeing is 15 g / d or more, and the crystal size (110 direction) is 30 to 55 angstroms;
The core-sheath composite spun yarn according to any one of the above (2) to (7), wherein the core-sheath type yarn is formed by always maintaining the water content before dyeing at 8% or more.
【００１７】（９）染色されたパラ系アラミド短繊維、
または染色されたパラ系アラミド短繊維とメタ系アラミ
ド短繊維の単繊維繊度が０．５〜４．５デニールであ
り、撚係数Ｋが２．８〜６．０である前記（２）〜
（８）のいずれかに記載の芯鞘型複合紡績糸。(9) dyed para-aramid short fibers,
Alternatively, the dyed para-aramid short fibers and meta-aramid short fibers have a single fiber fineness of 0.5 to 4.5 denier and a twist coefficient K of 2.8 to 6.0.
(8) The core-sheath composite spun yarn according to any of (8).
【００１８】（１０）前記（１）〜（９）のいずれかに
記載の芯鞘型複合紡績糸を布帛重量の３０〜１００重量
％の範囲で用いてなることを特徴とする布帛。(10) A fabric comprising the core-sheath composite spun yarn according to any one of the above (1) to (9) in an amount of 30 to 100% by weight of the fabric.
【００１９】（１１）アウトドアスポーツ用衣料または
防護被服用であることを特徴とする前記（１０に記載の
布帛。(11) The fabric according to the above (10), which is used for outdoor sports clothing or protective clothing.
【００２０】[0020]
【発明の実施の形態】このように本発明では、芯鞘型複
合紡績糸の芯部にポリエステル短繊維あるいはポリエス
テル短繊維と全芳香族ポリアミド短繊維、または天然繊
維などとの混紡短繊維糸条を配し、鞘部を染色されたパ
ラ系アラミド短繊維１００％あるいはメタ系アラミド繊
維を２５〜５０％を上記染色されたパラ系アラミド短繊
維と混紡してなる短繊維糸条で覆い、染色性を向上さ
せ、ポリエステル繊維の耐切創性、耐熱性の低さをカバ
ーして、全芳香族ポリアミド繊維を紡績糸表面に出し、
全芳香族ポリアミド繊維の機能性を十分に発揮させ、芯
部のポリエステル短繊維、ポリエステル短繊維混紡糸条
により、仕立て栄え、プリーツ保持性、防しわ性、形態
保持性を付与させるものである。As described above, according to the present invention, a polyester staple fiber or a blended staple fiber of a polyester staple fiber and a wholly aromatic polyamide staple fiber or a natural fiber is provided on the core of the core-sheath composite spun yarn. And the sheath is covered with 100% of dyed para-aramid staple fiber or 25-50% of meta-aramid staple fiber mixed with the above-mentioned dyed para-aramid staple fiber by a short fiber yarn. Improve the properties, cover the cut resistance of polyester fiber, low heat resistance, put out the whole aromatic polyamide fiber on the spun yarn surface,
The function of the wholly aromatic polyamide fiber is fully exerted, and the polyester short fiber and the polyester short fiber blended yarn of the core impart a tailored prosperity, pleat retention, wrinkle resistance and form retention.
【００２１】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【００２２】本発明の芯鞘型複合紡績糸は、全芳香族ポ
リアミド繊維のスポーツ衣料や衣料用途使用の大きな欠
点である染色性および仕立て栄え、プリーツ性、防しわ
性、形態保持性などの審美性付与について全芳香族ポリ
アミド繊維の持つ機能特性を損なうことなく実現すべく
鋭意検討し、染色可能なパラ系アラミド短繊維は、５以
上の固有粘度（ηinh ）を持つＰＰＴＡと濃硫酸から紡
糸用ドープをつくり、該ドープを紡糸口金の細孔を通し
て一旦空気中に紡出し、直ちに水中に導き凝固させ、高
強度、高弾性率のフィラメントを形成する工程と、該フ
ィラメントを染色する工程を連続することなく別々の工
程で実施する方法において、染色前のパラ系アラミド短
繊維の引張強度が１５ｇ／ｄ以上であり、結晶サイズ
（１１０方向）が３０〜５５オングストロームであり、
染色前の水分含量を常に８％以上に維持することによっ
て製造することができる。The core-sheath type composite spun yarn of the present invention has aesthetic properties such as dyeing properties and tailoring, pleat properties, anti-wrinkling properties, and shape retention, which are the major drawbacks of the use of wholly aromatic polyamide fibers in sports clothing and clothing. We have studied diligently for imparting the property without impairing the functional properties of the wholly aromatic polyamide fiber, and the dyeable para-aramid staple fiber is made from PPTA with an intrinsic viscosity (ηinh) of 5 or more and concentrated sulfuric acid for spinning. A dope is made, the dope is once spun into the air through the pores of a spinneret, immediately led into water and solidified to form a high-strength, high-modulus filament, and a step of dyeing the filament is continued. Without dyeing, the para-aramid short fibers before dyeing have a tensile strength of 15 g / d or more and a crystal size (110 direction) of 30. A 55 angstrom,
It can be produced by always keeping the water content before dyeing at 8% or more.
【００２３】本発明において、固有粘度ＩＶ（ηinh ）
は次の方法によって測定したものである。In the present invention, the intrinsic viscosity IV (ηinh)
Is measured by the following method.
【００２４】 固有粘度ＩＶ（ηinh ）＝（ｌｎ・ηrel ）／ｃ ［式中、ｃはポリマー溶液の濃度（溶媒１００ｍｌ中
０．５ｇのポリマー）であり、そしてηrel （相対粘
度）は、毛細管粘度計を用いて３０℃で測定した時にポ
リマー溶液が示す流れ時間とその溶媒が示す流れ時間と
の間の比率である］で固有粘度（ＩＶ）を定義する。本
発明における固有粘度（ＩＶ）値は、濃硫酸（９６％Ｈ
2 ＳＯ4 ）を用いて測定した値である。Intrinsic viscosity IV (η inh) = (In · η rel) / c where c is the concentration of the polymer solution (0.5 g of polymer in 100 ml of solvent) and η rel (relative viscosity) is the capillary viscosity Is the ratio between the flow time of a polymer solution and its solvent when measured at 30 ° C. using a meter] and the intrinsic viscosity (IV) is defined. In the present invention, the intrinsic viscosity (IV) value is determined by using concentrated sulfuric acid (96% H
2 SO 4 ).
【００２５】かかる繊維は要求される強度特性から、引
張強度が１５ｇ／ｄ以上、破断伸度が２〜５％であるこ
とが好ましい。In view of required strength characteristics, such a fiber preferably has a tensile strength of 15 g / d or more and an elongation at break of 2 to 5%.
【００２６】前記染色されたパラ系アラミド短繊維を用
いることで多種の色相に鮮やかに染色可能となるのであ
る。パラ系アラミド繊維、メタ系アラミド繊維の特徴で
ある、耐切創性、耐熱性の機能特性を十分に発揮させる
には、種々検討した結果、紡績糸、布帛の表面に染色さ
れたパラ系アラミド短繊維、もしくは染色されたパラ系
アラミド短繊維とメタ系アラミド短繊維を配置するのが
効果が高く最適であることを見出したのである。また防
護衣服の仕立て栄え、プリーツ保持性、防しわ性などの
形態保持性を得るにはポリエステル繊維の優れた熱セッ
ト性を利用するのが効果が高く最適であり、いかにパラ
系アラミド短繊維とメタ系アラミド短繊維と混紡組み合
わせるか種々検討した結果、紡績糸の中心部にポリエス
テル短繊維を配置して、外周部を染色されたパラ系アラ
ミド短繊維、もしくは染色されたパラ系アラミド短繊維
とメタ系アラミド短繊維で覆うことで、ポリエステル繊
維の耐切創性、耐熱性の低さを防護し、かつポリエステ
ル繊維の持つ熱セット性を十分発揮できることを見出し
たのである。The use of the dyed para-aramid short fibers makes it possible to dye various colors with vivid colors. As a result of various investigations, it was found that spun yarn and para-aramid short dyed on the surface of the fabric were used to sufficiently exhibit the functional properties of cut wound resistance and heat resistance, which are the characteristics of para-aramid fibers and meta-aramid fibers. It has been found that arranging fibers or dyed para-aramid short fibers and meta-aramid short fibers is highly effective and optimal. In addition, the use of the excellent heat-setting properties of polyester fibers is highly effective and optimal for obtaining shape protection such as tailoring of protective clothing, pleat retention, and wrinkle resistance. As a result of various examinations whether or not to combine with a meta-aramid short fiber, a polyester short fiber is arranged at the center of the spun yarn, and a para-aramid short fiber dyed on the outer periphery or a para-aramid short fiber dyed. By covering with a meta-aramid short fiber, they have found that the polyester fiber can protect the cut resistance and the low heat resistance and can sufficiently exhibit the heat setting property of the polyester fiber.
【００２７】本発明の芯鞘型複合紡績糸は、芯、鞘成分
いずれも短繊維で構成されてなり、芯成分が紡績糸に占
める割合が３０〜５０重量％の範囲であり、該芯成分を
ポリエステル短繊維１００％、あるいはポリエステル短
繊維混紡糸条で構成されてなり、かつ紡績糸に占めるポ
リエステル短繊維の割合が１０〜３５重量％の範囲で構
成されるものである、ポリエステル短繊維の紡績糸に占
める割合が１０重量％未満では防護衣服への満足する熱
セット性、形態保持性を付与することができにくくな
る。また、ポリエステル短繊維が３５重量％を越えると
ポリエステル繊維の弱点である耐熱性、耐切創性の低下
が現われ、パラ系アラミド繊維、メタ系アラミド繊維の
優れた機能特性を損ない好ましくない、芯成分の短繊維
束が紡績糸に占める割合が４０〜５０重量％、ポリエス
テル繊維の紡績糸に占める割合が１５〜３０重量％の範
囲がより好ましい。[0027] The core-sheath type composite spun yarn of the present invention is composed of short fibers in both the core and sheath components, and the ratio of the core component to the spun yarn is in the range of 30 to 50% by weight. Is composed of 100% polyester staple fiber or polyester staple fiber blended yarn, and the proportion of polyester staple fiber in the spun yarn is in the range of 10 to 35% by weight. If the proportion of the spun yarn is less than 10% by weight, it is difficult to impart satisfactory heat setting property and shape retention to protective clothing. On the other hand, if the amount of the polyester short fiber exceeds 35% by weight, the heat resistance and the cut resistance, which are the weak points of the polyester fiber, appear, and the excellent functional properties of the para-aramid fiber and the meta-aramid fiber are impaired. More preferably, the ratio of the short fiber bundle to the spun yarn is 40 to 50% by weight, and the ratio of the polyester fiber to the spun yarn is 15 to 30% by weight.
【００２８】一方、鞘成分は染色されたパラ系アラミド
短繊維、もしくは染色されたパラ系アラミド短繊維とメ
タ系アラミド短繊維１００重量％で構成されている。１
００重量％より少なくなると染色されたパラ系アラミド
短繊維とメタ系アラミド短繊維の優れた機能特性を十分
に発揮させる事ができず好ましくない、また、鞘成分の
紡績糸に占める割合は５０〜７０重量％の範囲が好まし
い、５０重量％未満では芯成分のポリエステル短繊維を
鞘成分の染色されたパラ系アラミド短繊維とメタ系アラ
ミド短繊維で十分に覆うことが困難となり、パラ系アラ
ミド繊維とメタ系アラミド繊維の優れた機能特性を十分
に発揮させることができず好ましくない。また、７０重
量％を越えると芯成部のポリエステル繊維の混紡率が低
く十分な熱セット性が得られず好ましくないばかりか、
複合加工性が悪化して好ましくない。好ましくは鞘成分
の紡績糸に占める割合が５０〜６０重量％の範囲であ
る。On the other hand, the sheath component is composed of dyed para-aramid short fibers, or dyed para-aramid short fibers and meta-aramid short fibers of 100% by weight. 1
If it is less than 00% by weight, the excellent functional properties of the dyed para-aramid short fibers and meta-aramid short fibers cannot be sufficiently exhibited, which is not preferable. Also, the ratio of the sheath component to the spun yarn is 50 to 50%. When the content is less than 50% by weight, it is difficult to sufficiently cover the polyester short fibers of the core component with the dyed para-aramid short fibers and meta-short fibers of the sheath component. In addition, the excellent functional properties of the meta-aramid fiber cannot be sufficiently exhibited, which is not preferable. On the other hand, if the content exceeds 70% by weight, not only is the blending ratio of the polyester fiber in the core part too low to obtain a sufficient heat setting property, but it is not preferable.
It is not preferable because composite workability deteriorates. Preferably, the ratio of the sheath component to the spun yarn is in the range of 50 to 60% by weight.
【００２９】本発明におけるパラ系アラミド繊維は、例
えばポリパラフェニレンテレフタルアミド繊維やコポリ
パラフェニレン−３，４，オキシジフェニレンテレフタ
ルアミド繊維があげられる。また、メタ系アラミド繊維
は、例えばポリメタフェニレンイソフタルアミド繊維が
あげられる。Examples of the para-aramid fiber in the present invention include polyparaphenylene terephthalamide fiber and copolyparaphenylene-3,4, oxydiphenylene terephthalamide fiber. Examples of the meta-aramid fiber include polymetaphenylene isophthalamide fiber.
【００３０】本発明の染色されたパラ系アラミド短繊維
が紡績糸に占める割合は２５〜９０重量％の範囲であ
り、染色されたパラ系アラミド短繊維にメタ系アラミド
短繊維を混紡した場合には、メタ系アラミド短繊維が紡
績糸に占める割合が６０重量％以下で混紡することが好
ましく、各々要求されるスポーツ衣料や防護被服特性に
より選定するのが良い。The proportion of the dyed para-aramid short fiber of the present invention in the spun yarn is in the range of 25 to 90% by weight, and when the dyed para-aramid short fiber is mixed with the meta-aramid short fiber, the spun yarn is used. It is preferable that the blend ratio of the meta-aramid staple fiber to the spun yarn is 60% by weight or less, and the blend is preferably selected according to the required sports clothing and protective clothing characteristics.
【００３１】次に、上記、芯鞘型複合紡績糸の鞘成分を
構成する短繊維束Ａについて説明する。本発明の短繊維
束Ａは、染色されたパラ系アラミド短繊維、もしくは染
色されたパラ系アラミド短繊維とメタ系アラミド短繊維
とを、通常の短繊維紡績工程である打綿、梳綿、練条、
粗紡、精紡の各工程を通すことにより作成されるスライ
バーや粗糸としたものなどである。また、繊維長を長く
して（７６〜１６０ｍｍ）一般のソ毛紡績を通したスラ
イバーや粗糸でもよい。染色されたパラ系アラミド短繊
維、もしくは染色されたパラ系アラミド短繊維とメタ系
アラミド短繊維と短繊維の単繊維繊度は０．５〜４．５
デニールが好ましく、複合加工性の面から０．８〜２．
５デニールがより望ましい、繊維長については特に限定
しないが、紡績方法に合わせ最適な繊維長を選ぶのが良
い。Next, the short fiber bundle A constituting the sheath component of the core-sheath composite spun yarn will be described. The short fiber bundle A of the present invention is a dyed para-aramid staple fiber, or a dyed para-aramid staple fiber and a meta-aramid staple fiber, and is subjected to a usual short fiber spinning process of batting, carding, Draw,
A sliver or a roving produced by passing through each of the roving and spinning processes. Further, a sliver or a roving through general wool spinning with a longer fiber length (76 to 160 mm) may be used. The single-fiber fineness of the dyed para-aramid staple fiber or the dyed para-aramid staple fiber, meta-aramid staple fiber and staple fiber is 0.5 to 4.5.
Denier is preferred, and 0.8 to 2.
The fiber length is more preferably 5 deniers. The fiber length is not particularly limited, but it is preferable to select the optimum fiber length according to the spinning method.
【００３２】本発明におけるパラ系アラミド繊維とは、
テレフタル酸とパラフェニレンジアミンを重縮合して得
られる重合体であるが、少量のジカルボン酸およびジア
ミンを共重合したものも使用できる。本発明のパラ系ア
ラミド繊維は、５以上の固有粘度（ηinh ）を持つＰＰ
ＴＡと濃硫酸から光学異方性ドープをつくり、該ドープ
を紡糸口金の細孔を通して一旦空気中に紡出し、直ちに
水中に導き凝固させ、ネルソンローラに導いて水酸化ナ
トリウム水溶液で中和処理し、水洗工程をへてホットロ
ールによってわずかに乾燥し、フィラメントとしてチュ
ーブに巻き取る工程を途切れることなく通過させて得ら
れる。巻き取ったパラ系アラミド繊維は、染色工程まで
の間に乾燥しないようポリエチレンフィルムなどによっ
て包装される。この段階で繊維の引張り弾性率は４００
ｇ／Ｄを越えており、高弾性率糸としての性能を備えて
いるが、弾性率をさらに向上させるために、乾燥後３５
０〜４００℃で５〜１０秒熱処理すると結晶化度は５０
％を越えるのが普通である。The para-aramid fiber in the present invention is:
Although it is a polymer obtained by polycondensing terephthalic acid and paraphenylenediamine, a polymer obtained by copolymerizing a small amount of dicarboxylic acid and diamine can also be used. The para-aramid fiber of the present invention is a PP having an intrinsic viscosity (ηinh) of 5 or more.
An optically anisotropic dope is made from TA and concentrated sulfuric acid, and the dope is once spun into the air through the pores of a spinneret, immediately introduced into water and solidified, guided to a Nelson roller and neutralized with an aqueous sodium hydroxide solution. After the washing step, it is slightly dried by a hot roll, and is passed through a step of winding it as a filament into a tube without interruption. The wound para-aramid fiber is packaged with a polyethylene film or the like so as not to dry before the dyeing step. At this stage, the tensile modulus of the fiber is 400
g / D, and has the performance as a high elastic modulus yarn.
When heat treated at 0 to 400 ° C. for 5 to 10 seconds, the crystallinity becomes 50
Usually it exceeds%.
【００３３】本発明に用いるＰＰＴＡの固有粘度ＩＶ
（ηinh ）は５以上が望ましい。固有粘度ＩＶ（ηinh
）が５未満では、高強度、高弾性率の繊維物性が得ら
れにくい。Intrinsic viscosity IV of PPTA used in the present invention
(Ηinh) is desirably 5 or more. Intrinsic viscosity IV (ηinh
) Is less than 5, it is difficult to obtain fiber properties with high strength and high elastic modulus.
【００３４】本発明のパラ系アラミド繊維は、結晶サイ
ズ（１１０方向）が、３０〜５５オングストロームであ
り、かつ水分量が常に８％以上であることが必要であ
る。結晶サイズが３０オングストローム未満では繊維の
緻密化が不十分で高強度、高弾性率の繊維物性が得られ
ないし、５５オングストロームを越えると染色が困難と
なる。The para-aramid fiber of the present invention must have a crystal size (110 directions) of 30 to 55 angstroms and a water content of at least 8% at all times. If the crystal size is less than 30 angstroms, the fibers are insufficiently densified to obtain high-strength and high-modulus fiber properties. If the crystal size is more than 55 angstroms, dyeing becomes difficult.
【００３５】ここで、水分量が常に８％以上とは、８％
以下に乾燥した履歴を持たないということである。水分
率が８％以下に乾燥すると構造が緻密となり、染色が困
難となる。再び水分を付与しても染色性は回復しない。
好ましくは、パラ系アラミド繊維の水分率は１５〜４８
％が望ましい。このような水分率にするには、紡糸した
パラ系アラミド繊維を、１００〜１５０℃で５〜２０秒
間低温乾燥することが望ましい。乾燥温度が１００℃未
満では水分の除去が難しく、チューブに巻き取った後の
扱いに問題を生じる。１５０℃を越えると結晶化が進
み、染色が困難になる。水分率が５０％を越えると糸道
ガイドの抵抗が増しフイラメントの巻き取りが困難とな
る本発明においては、このような物性を有するパラ系ア
ラミド繊維を染色処理する染色の方法は、特殊な設備や
特殊な方法を必要とせず、既存の合成繊維の染色設備を
用いることができる。適量の染料と助剤および酸を加え
てＰＨを調整し、６０℃で染色を開始し、６０分間で１
３０℃に昇温し３０分間染色することによって達せられ
る。染料はカチオン染料、分散染料等を用いることがで
きるが、緻密な構造にも浸透しやすいカチオン染料が望
ましい。Here, the condition that the water content is always 8% or more is defined as 8%
What follows is that it has no dry history. When the moisture content is dried to 8% or less, the structure becomes dense and dyeing becomes difficult. Even if water is added again, the dyeability does not recover.
Preferably, the water content of the para-aramid fiber is 15 to 48.
% Is desirable. In order to achieve such a water content, it is desirable to dry the spun para-aramid fiber at a low temperature of 100 to 150 ° C. for 5 to 20 seconds. If the drying temperature is lower than 100 ° C., it is difficult to remove water, which causes a problem in handling after winding the tube. If the temperature exceeds 150 ° C., crystallization proceeds and dyeing becomes difficult. When the water content exceeds 50%, the resistance of the yarn guide increases and it becomes difficult to wind up the filament. In the present invention, the dyeing method for dyeing para-aramid fibers having such physical properties requires special equipment. No special method is required, and existing dyeing equipment for synthetic fibers can be used. The pH was adjusted by adding an appropriate amount of dye, auxiliary and acid, and dyeing was started at 60 ° C.
This can be achieved by raising the temperature to 30 ° C. and dyeing for 30 minutes. As the dye, a cationic dye, a disperse dye, or the like can be used, but a cationic dye that easily penetrates into a dense structure is preferable.
【００３６】染色したパラ系アラミド繊維フィラメント
を、クリンパーにかけて、捲縮（６クリンプ／インチ）
を与え、紡績に適した長さ、たとえば通常スクエアカッ
トにより、１．５インチ〜６インチにカットして着色し
たパラ系アラミド繊維ステープルを得ることができる。The dyed para-aramid fiber filaments are crimpered and crimped (6 crimps / inch).
To obtain a colored para-aramid fiber staple which is cut into 1.5 to 6 inches by a length suitable for spinning, for example, usually a square cut.
【００３７】またステープル化は、平均繊維長±２イン
チのバリアブルカットによっても行なわれ、長繊維を把
持した一対以上のローラ間の速度差によってカットする
牽切方式によりステープル化する方法によってもよい。
染色加工はステープル化前のフィラメントまたはサブト
ウあるいは、ステープル化の後でもよい。Further, stapling is also performed by variable cutting having an average fiber length of ± 2 inches, and may be performed by a stapling method in which the long fibers are cut by a speed difference between at least one pair of rollers holding the long fibers.
The dyeing process may be performed on filaments or subtows before stapling or after stapling.
【００３８】つぎに上記染色可能なパラ系アラミド短繊
維をダークブルーに染色した染色方法の一例について述
べる。Next, an example of a dyeing method for dyeing the dyeable para-aramid short fibers in dark blue will be described.
【００３９】ｏｗｆは乾燥した繊維重量に対する染料の
重量％を示す。ｇ／ｌは調合した染浴１リットルに対す
る助剤の重量割合を示す。Owf indicates the weight% of the dye based on the weight of the dried fiber. g / l indicates the weight ratio of the assistant to 1 liter of the prepared dyeing bath.
【００４０】 染料： Ａｓｔｒａｚｏｎ Ｇｏｌｄｅｎ Ｙｅｌｌｏｗ ＧＬ (CI Yellow 28) （Ｄｙｓｔｅｒ社製） ０．１％ｏｗｆ Ｋａｙａｃｒｙｌ Ｒｅｄ ＧＬ（ＣＩ Ｒｅｄ ２９） （日本化薬社製） ２．０％ｏｗｆ Ａｉｚｅｎ Ｃａｔｈｉｌｏｎ Ｂｌｕｅ Ｔｂｌｈ （保土谷化学社製） ８．０％ｏｗｆ 助剤： “ネオデスポンＡＣ”（モーリン化学社製） ２ｇ／１ 酢酸 １ｇ／１ 硝酸ソーダ ２０ｇ／１ “テリールキャリヤＡ１１１”（明成化学社製）２０ｇ／１ ［染料名のＣＩはカラーインデックスの意味で色の番号を表す］ 浴比１：１５、６０℃で染色を開始し、６０分間で１３
０℃に昇温し、３０分間染色した。染色後、非イオン活
性剤と還元剤からなる浴で、８０℃２０分間還元洗浄
し、脱水乾燥後、紡績油剤を付与した。ＪＩＳ Ｌ ０
８４２による染色堅牢度は３級でパラ系アラミド繊維と
しては極めて高いレベルであった。Dyes: Astrazon Golden Yellow GL (CI Yellow 28) (manufactured by Dyster) 0.1% owf Kayacryl Red GL (CI Red 29) (manufactured by Nippon Kayaku) 2.0% owf Aizen Catilon Blue 8.0% owf Auxiliary agent: "Neodespon AC" (Morin Chemical Co., Ltd.) 2 g / 1 Acetic acid 1 g / 1 Sodium nitrate 20 g / 1 "Teryl Carrier A111" (Meisei Chemical Co., Ltd.) 20 g / 1 [CI of the dye name indicates the color number in the meaning of the color index] Dyeing was started at a bath ratio of 1:15, 60 ° C, and 13 minutes in 60 minutes.
The temperature was raised to 0 ° C., and staining was performed for 30 minutes. After dyeing, the resultant was subjected to reduction washing at 80 ° C. for 20 minutes in a bath composed of a nonionic activator and a reducing agent. JIS L 0
The color fastness to 842 was tertiary and extremely high as a para-aramid fiber.
【００４１】芯成分を構成する短繊維束Ｂはポリエステ
ル短繊維１００重量％あるいはポリエステル短繊維と他
の繊維との混紡品である。また、この芯成分を構成する
短繊維束Ｂに染色されたパラ系アラミド短繊維、メタ系
アラミド短繊維が短繊維束Ｂに占める割合において、２
０重量％以内混紡してもよく、これによりパラ系アラミ
ド繊維、メタ系アラミド繊維の持つ機能特性を高めても
良い、２０重量％を越えるとパラ系アラミド繊維、メタ
系アラミド繊維の持つ機能特性は向上するがポリエステ
ル繊維の混紡率が低くなり防護被服への満足する形態保
持性が付与しにくくなるので好ましくない。好ましくは
１５重量％以内である。The short fiber bundle B constituting the core component is 100% by weight of polyester short fibers or a blend of polyester short fibers and other fibers. The ratio of para-aramid short fibers and meta-aramid short fibers dyed in the short fiber bundle B constituting the core component to the short fiber bundle B is 2%.
It may be blended within 0% by weight, thereby enhancing the functional properties of para-aramid fibers and meta-aramid fibers. If it exceeds 20% by weight, the functional properties of para-aramid fibers and meta-aramid fibers Is improved, but the blending ratio of the polyester fiber is decreased, and it is difficult to impart satisfactory shape retention to the protective garment, which is not preferable. Preferably it is within 15% by weight.
【００４２】また、混紡繊維としては、難燃処理された
木綿繊維や、セルロース系繊維でもよく、これらの混紡
糸でもよい。Further, the blended fiber may be a flame retarded cotton fiber or a cellulosic fiber, or a blended yarn of these.
【００４３】本発明の芯鞘型複合紡績糸の撚方向はＳ、
Ｚいずれでも良く、撚係数Ｋ（撚数＝Ｋ・番手1/2 ）は
一般の紡績糸よりやや高めにするのが芯部をパラ系アラ
ミド短繊維、メタ系アラミド短繊維で覆う点で好まし
く、Ｋ＝２．８〜６．０の範囲が望ましい、Ｋ＝２．８
より低くすると芯、鞘の複合加工性が悪化し好ましくな
い、Ｋ＝６．０より高くすると強撚になりすぎ二重撚の
発生が強く加工性が悪化し好ましくない、Ｋ＝３．０〜
４．５の範囲がより好ましい。The twist direction of the core-sheath composite spun yarn of the present invention is S,
It is preferable that the twist coefficient K (twist number = K · count 1/2 ) be slightly higher than that of a general spun yarn because the core is covered with para-aramid short fibers and meta-aramid short fibers. , K = 2.8-6.0 is desirable, K = 2.8
If K is lower, the composite workability of the core and the sheath deteriorates, which is not preferable. If K is higher than 6.0, the twist becomes too strong and the occurrence of double twist becomes strong, and the workability deteriorates.
A range of 4.5 is more preferred.
【００４４】次に、本発明の芯鞘型複合紡績糸の製造方
法について説明する。本発明における複合紡績糸の製造
方法は、鞘成分の短繊維束Ａがスライバーや粗糸の場
合、一対のテーパーローラーからなるフロントトップロ
ーラーおよびフロントボトムローラーを有するリング精
紡機により、ガイドを介してフロントローラーの送り出
し量の高い側へ通したエプロンドラフト後の短繊維束Ａ
と、送り出し量の低い側へ通したエプロンドラフト後の
短繊維束Ｂとを同時に精紡し、短繊維束Ｂを中心に短繊
維束Ａを実撚付与時に順時巻回させることにより、芯成
部の短繊維束Ｂをこより状に包み込む状態で糸形成させ
るようにすればよい。Next, a method for producing the core-sheath composite spun yarn of the present invention will be described. When the short fiber bundle A of the sheath component is a sliver or a roving, the method for producing a composite spun yarn according to the present invention uses a ring spinning machine having a front top roller and a front bottom roller including a pair of tapered rollers via a guide. Short fiber bundle A after aprondraft passed to the side where the front roller has a high feed amount
And the short fiber bundle B after the aprondraft passed through to the side where the amount of feed is low is simultaneously spun, and the short fiber bundle A is wound around the short fiber bundle B at the time of actual twisting, so that the core is What is necessary is just to make it the thread | yarn in the state which wrapped the short fiber bundle B of a component part in a twist shape.
【００４５】図１は、本発明の芯鞘型複合紡績糸を製造
する精紡機において、ドラフト加撚する概要を示すもの
である。FIG. 1 shows an outline of draft twisting in a spinning machine for producing a core-sheath composite spun yarn of the present invention.
【００４６】精紡機にセットされた短繊維束Ａと短繊維
束Ｂとは、それぞれトランペット１ａ，１ｂを経てバッ
クローラー２に供給され、エプロンドラフト３を経たの
ち一対のテーパーフロントローラー４ａ，４ｂに把持さ
れる。The short fiber bundle A and the short fiber bundle B set in the spinning machine are supplied to the back roller 2 via the trumpets 1a and 1b, respectively, and after passing through the apron draft 3 to the pair of tapered front rollers 4a and 4b. Be gripped.
【００４７】この一対のテーパーフロントローラー４
ａ，４ｂでは、それぞれ送り出し量の高い側（径の大き
い側）へはトランペット１ａを介して短繊維束Ａを供給
し、送り出し量の低い側（径の小さい側）へはトランペ
ット１ｂを介して短繊維束Ｂを供給する。次いでテーパ
ーフロントローラー４ａ，４ｂに把持されながら出てき
た両短繊維束Ａ，Ｂを間隔３〜１０ｍｍの範囲にとって
合体させ、短繊維束Ｂを芯に短繊維束Ａを被覆させなが
ら芯鞘型複合紡績糸５に形成し、これにリング６、トラ
ベラ７で実撚を付与しながら糸管８に巻き取る。This pair of tapered front rollers 4
In a and 4b, the short fiber bundle A is supplied via the trumpet 1a to the side where the delivery amount is large (the side with a large diameter), and to the side where the delivery amount is small (the side with a small diameter) via the trumpet 1b. The short fiber bundle B is supplied. Next, the short fiber bundles A and B, which come out while being gripped by the tapered front rollers 4a and 4b, are united in a range of 3 to 10 mm, and the short fiber bundle B is coated with the short fiber bundle A as a core-sheath type. The composite spun yarn 5 is formed and wound around a yarn tube 8 while giving a real twist thereto by a ring 6 and a traveler 7.
【００４８】また、本発明においては、芯部を構成する
短繊維束Ｂとして、あらかじめ紡績糸の状態に形成した
ものであってもよい。この場合、芯成分を構成する連続
糸条の紡績糸としてはポリエステル短繊維紡績糸１００
％、またはポリエステル短繊維混紡紡績糸であってもよ
い。In the present invention, the short fiber bundle B constituting the core may be formed in a spun yarn state in advance. In this case, as a spun yarn of a continuous yarn constituting a core component, a spun polyester short fiber yarn 100
% Or polyester short fiber blend spun yarn.
【００４９】上記の紡績糸を芯とした芯鞘型複合紡績糸
の製造方法としては、特に限定するものではないが、鞘
成分の短繊維束がスライバーや粗糸の場合、例えば一対
のテーパーローラーからなるフロントトップローラーお
よびフロントボトムローラーを有するリング精紡機によ
り、トランペットを介してバックローラー、エプロンロ
ーラーを経て、フロントローラーの送り出し量の高い側
へ通し、芯成分の紡績糸をフロントローラーの送り出し
量の低い側へガイドを介して通した後、短繊維束と同時
にフロントローラーより紡出し、連続紡績糸を中心に短
繊維束が実撚付与時に順時巻回され、芯成部の紡績糸を
こより状に包み込む状態で糸形成させることにより得る
ことができる。The method for producing the core-sheath type composite spun yarn having the above-mentioned spun yarn as a core is not particularly limited, but when the short fiber bundle of the sheath component is a sliver or a roving, for example, a pair of tapered rollers A ring spinning machine having a front top roller and a front bottom roller consisting of: a trumpet, a back roller, an apron roller, and a front roller. After passing through the guide to the lower side of the short fiber bundle, it is spun from the front roller at the same time as the short fiber bundle, and the short fiber bundle is wound around the continuous spun yarn at the time of actual twisting, and the spun yarn of the core forming part It can be obtained by forming a yarn in a state of being wrapped in a twisted shape.
【００５０】本発明の芯鞘型複合紡績糸は、該紡績糸中
に占める鞘成分の全芳香族ポリアミド短繊維の比率が５
０〜７０重量％であり、本発明の染色されたパラ系アラ
ミド短繊維が２５〜９０重量％含まれ、全芳香族ポリア
ミド短繊維束Ａと短繊維束Ｂのポリエステル短繊維およ
びポリエステル短繊維混紡糸条の構成比率を適宣設定す
ることによって本発明の芯鞘型複合紡績糸を得ることが
できる。In the core-sheath composite spun yarn of the present invention, the ratio of the wholly aromatic short polyamide fibers of the sheath component in the spun yarn is 5%.
0 to 70% by weight, containing 25 to 90% by weight of the dyed para-aramid short fiber of the present invention, and a blend of a polyester short fiber and a polyester short fiber of a wholly aromatic polyamide short fiber bundle A and a short fiber bundle B. By appropriately setting the composition ratio of the yarn, the core-sheath composite spun yarn of the present invention can be obtained.
【００５１】芯、鞘両繊維束の合体時の間隔は両成分の
送り出し量の差、すなわち短繊維束Ａの巻回状態を変え
るものであり、重なり状態や紡績糸の物性をみて決める
のがよい。The interval at which the core and sheath fiber bundles are united changes the difference in the amount of feed of both components, that is, the winding state of the short fiber bundle A, and is determined by considering the overlapping state and the physical properties of the spun yarn. Good.
【００５２】次に、本発明の芯鞘型複合紡績糸を単糸あ
るいは双糸として、織、編物加工してもよく、該糸１０
０％使いでも良いが、フィラメント、加工糸、弾性繊維
などとの交編、交織さらには、耐熱、耐切創が要求され
る特定の部分に本発明紡績糸を用い、常法により織、編
物などの製品を得ることができるが、織、編物製品など
の全体重量の３０〜１００％の範囲で用いてなるもので
ある。上記本発明の紡績糸が織、編物製品全体の重量の
３０％未満ではたとえ特定の部分に本発明糸を用いても
十分な耐熱性、耐切創性、染色性が得られにくくなり、
好ましくない。好ましくは５０〜１００％の範囲であ
る。Next, the core-sheath composite spun yarn of the present invention may be woven or knitted as a single yarn or a double yarn.
0% may be used, but the knitting and weaving with filaments, processed yarns, elastic fibers, etc., and the spun yarn of the present invention are used in specific parts where heat resistance and cut resistance are required. Can be obtained, but it is used in the range of 30 to 100% of the total weight of woven or knitted products. If the spun yarn of the present invention is less than 30% of the total weight of the woven or knitted product, even if the yarn of the present invention is used in a specific portion, it becomes difficult to obtain sufficient heat resistance, cut resistance, and dyeability,
Not preferred. Preferably it is in the range of 50 to 100%.
【００５３】[0053]
【実施例】以下、実施例によって本発明を説明する。実
施例中の物性は次ぎの測定によった。 ＜結晶サイズ＞広角Ｘ線解析法によった。The present invention will be described below by way of examples. The physical properties in the examples were determined by the following measurements. <Crystal size> Wide angle X-ray analysis was used.
【００５４】Ｘ線解析装置：（株）理学電機社製 ４０
３６Ａ２型 Ｘ線原 ：ＣｕＫα線 湾曲結晶モノクロメータ（グラファイト使用） ＜固有粘度＞固有粘度ＩＶ＝（ηinh ）は、９８．５重
量％の濃硫酸に濃度（Ｃ）＝０．５ｇ／ｄｌでポリマー
を溶かした溶液を３０℃で定法により測定する。X-ray analyzer: 40 manufactured by Rigaku Denki Co., Ltd.
36A2 type X-ray source: CuKα ray Curved crystal monochromator (using graphite) <Intrinsic viscosity> Intrinsic viscosity IV = (ηinh) is a polymer at a concentration (C) of 0.5 g / dl in 98.5% by weight of concentrated sulfuric acid. Is measured at 30 ° C. by a conventional method.
【００５５】（ηinh ）＝（ｌｎ・ηｒｅｌ）／Ｃ （ｌｎは自然対数） ＜繊維の強伸度特性＞糸条の引張り強度、引張り弾性率
（初期引張り抵抗度）は、ＪＩＳ Ｌ １０１３によっ
た。 ＜水分率＞水分率の測定は、ＪＩＳ Ｌ １０１３によ
った。(Ηinh) = (ln · ηrel) / C (where ln is a natural logarithm) <Strength and elongation characteristics of fiber> Tensile strength and tensile elastic modulus (initial tensile resistance) of the yarn are determined according to JIS L1013. Was. <Moisture content> The moisture content was measured according to JIS L1013.
【００５６】付着水分率（％）＝（Ｗ−Ｗ１）×１００
／Ｗ１ ここに、Ｗ ：試料採集時の質量 Ｗ１：試料の乾燥時質量 ＜切創抵抗力＞枠体の中央部に約３ｍｍの間隔で２枚の
試料シートを把持し、この試料シートのスリット部に角
度６０度で２辺に刃のあるセラミック製の刃を垂直に立
てて当て、この刃先に５００ｍｍ／分の速度で荷重をか
けていったときの該試料シートが切創される最大荷重を
測定する。 ＜プリーツ性＞織、編物のタテ方向に長さ２５ｃｍの試
料を切り取り、長さ方向５ｃｍ間隔で印をつけ（４箇
所）中央部の１５ｃｍを折り込み、５ｃｍの長さで試料
が３重になるように折り、通常のプレス機でプレス表面
温度１４０℃、プレス圧力０．５ｋｇ／ｃｍ2 で１０秒
間プレスしたのちバキューム処理を１０分間行い試料を
冷却する。ブリーツ性（プリーツのつき方）は肉眼で級
判定した。Adhered moisture percentage (%) = (W−W1) × 100
/ W1 Here, W: mass at the time of sample collection W1: mass at the time of sample drying <cut resistance> Two sample sheets are gripped at an interval of about 3 mm at the center of the frame, and slits of the sample sheet are formed. The maximum load at which the sample sheet is cut when a ceramic blade with a blade on two sides is set upright at an angle of 60 degrees and the edge is applied at a speed of 500 mm / min. Is measured. <Pleatability> Cut a 25 cm long sample in the vertical direction of the woven or knitted fabric, mark it at 5 cm intervals in the length direction (4 places), fold 15 cm at the center, and triple the sample at 5 cm length Then, the sample is pressed with a normal press at a press surface temperature of 140 ° C. and a press pressure of 0.5 kg / cm 2 for 10 seconds, and then subjected to vacuum treatment for 10 minutes to cool the sample. The pleating property (how to make pleats) was judged with the naked eye.
【００５７】判定基準を下記する。The criteria are as follows.
【００５８】 ５級：非常にシャープなプリーツ ４級：シャープなプリーツ ５級：プリーツがある ５級：プリーツが少しある ５級：プリーツがほとんどない ＜プリーツ保持性＞プリーツ性を評価した試料を用いＪ
ＩＳ Ｌ ０２１７−１０３法にもとずき洗濯後試料の
プリーツ性を評価した。結果をプリーツ保持性として級
判定した。 ＜難溶融性（煙草熱溶融性）＞５００℃に加熱された金
属棒（直径約０．６ｃｍ）の先端に試料を５秒間接触さ
せた時の穴開きの程度を５級（穴開きなし）〜１級（完
全に穴が開く）の５段階で級判定した。 ＜Ｌ値（染着度）＞Ｌ値の測定はＪＩＳ Ｚ ８７２９
に従った。測定器は（株）住化分析センター製Ｍａｃｂ
ｅｔｈ Ｃｏｌｏｒ ３０００を用いた。Grade 5: Very sharp pleats Grade 4: Sharp pleats Grade 5: There are pleats Grade 5: There are some pleats Grade 5: There is almost no pleats <Pleat retention> Using a sample for which pleating properties were evaluated J
The pleating property of the sample after washing was evaluated based on the IS L 0217-103 method. The results were graded as pleated retention. <Poor melting (tobacco heat melting)> The degree of piercing when the sample is brought into contact with the tip of a metal rod (about 0.6 cm in diameter) heated to 500 ° C for 5 seconds is class 5 (no piercing). Classification was made in five grades of 級 grade 1 (holes were completely opened). <L value (degree of dyeing)> L value is measured according to JIS Z 8729.
Followed. The measuring instrument is Macb manufactured by Sumika Chemical Analysis Service, Ltd.
eth Color 3000 was used.
【００５９】同一色相の場合は、数値が小さいほど良く
染着されていることを示す。 ［実施例１、比較例１］通常の方法で得られたＰＰＴＡ
（ηinh ＝６．５）を９９．９％の濃硫酸に溶かし、ポ
リマー濃度１９．０％、温度８０℃の紡糸ドープとし、
孔径０．０６ｍｍの細孔数１０００個を有する口金から
わずかの間空気中へ紡出した後、４℃の水中に導いて凝
固させ、ネルソンローラに導き、８％の水酸化ナトリウ
ム水溶液で中和処理し、水洗後、ホットローラで１１０
℃１５秒間乾燥してプラスチックのチューブに巻き取る
工程を途切れることなく通過させて、フィラメント数１
０００からなる総繊度１５００デニール（絶乾換算）の
パラ系アラミド繊維フィラメント糸（実施例１）を得
た。実施例１のパラ系アラミド繊維をチューブに巻き取
ることなく、つづいて設置されたホットローラに導いて
さらに３５０℃、１０秒間の熱処理を行った後巻き取っ
て、乾燥したパラ系アラミド繊維フィラメント糸（比較
例１）を得た。In the case of the same hue, the smaller the numerical value, the better the dyeing. [Example 1, Comparative Example 1] PPTA obtained by a usual method
(Ηinh = 6.5) was dissolved in 99.9% concentrated sulfuric acid to obtain a spin dope having a polymer concentration of 19.0% and a temperature of 80 ° C.
After spinning into the air for a short time from a die having a pore size of 0.06 mm and a number of 1000 pores, it is introduced into water at 4 ° C., solidified, guided to a Nelson roller, and neutralized with an 8% aqueous sodium hydroxide solution. After processing and washing with water, use a hot roller for 110
At 15 ° C. for 15 seconds and winding it into a plastic tube without interruption, and the number of filaments is 1
Thus, a para-aramid fiber filament yarn (Example 1) having a total fineness of 1500 denier (equivalent to absolute dryness) consisting of 2,000 was obtained. Without winding the para-aramid fiber of Example 1 into a tube, the para-aramid fiber filament yarn was guided to a hot roller installed thereon, further subjected to a heat treatment at 350 ° C. for 10 seconds, and then wound and dried. (Comparative Example 1) was obtained.
【００６０】これらのパラ系アラミド繊維フィラメント
糸を押し込みクリンパーにより６山／インチの割合で捲
縮をかけ、１５００デニール（単繊維繊度１．５デニー
ル）を１．５インチと２インチにカットして３８ｍｍと
５１ｍｍのステープルとした。These para-aramid fiber filament yarns are pressed and crimped at a rate of 6 ridges / inch by a crimper, and 1500 denier (single fiber fineness: 1.5 denier) is cut into 1.5 inches and 2 inches. Staples of 38 mm and 51 mm were used.
【００６１】これらのパラ系アラミド繊維の物性を表１
に示す。Table 1 shows the physical properties of these para-aramid fibers.
Shown in
【００６２】[0062]
【表１】 [Table 1]
【００６３】パラ系アラミド繊維ステープルの染色方法
の一例について述べる。本発明のパラ系アラミド短繊維
を次の条件でダークブルーに染色した。ｏｗｆは乾燥し
た繊維重量に対する染料の重量％を示す。ｇ／ｌは調合
した染浴１リットルに対する助剤の重量割合を示す。An example of a method for dyeing para-aramid fiber staples will be described. The para-aramid short fibers of the present invention were dyed dark blue under the following conditions. owf indicates the weight% of the dye based on the weight of the dried fiber. g / l indicates the weight ratio of the assistant to 1 liter of the prepared dyeing bath.
【００６４】 染料： Ａｓｔｒａｚｏｎ Ｇｏｌｄｅｎ Ｙｅｌｌｏｗ ＧＬ (CI Yellow 28) （Ｄｙｓｔｅｒ社製） ０．１％ｏｗｆ Ｋａｙａｃｒｙｌ Ｒｅｄ ＧＬ（ＣＩ Ｒｅｄ ２９） （日本化薬社製） ２．０％ｏｗｆ Ａｉｚｅｎ Ｃａｔｈｉｌｏｎ Ｂｌｕｅ Ｔｂｌｈ （保土谷化学社製） ８．０％ｏｗｆ 助剤： “ネオデスポンＡＣ”（モーリン化学社製） ２ｇ／１ 酢酸 １ｇ／１ 硝酸ソーダ ２０ｇ／１ “テリールキャリヤＡ１１１”（明成化学社製）２０ｇ／１ ［染料名のＣＩはカラーインデックスの意味で色の番号を表す］ 浴比１：１５、６０℃で染色を開始し、６０分間で１３
０℃に昇温し、３０分間染色した。染色後、非イオン活
性剤と還元剤からなる浴で、８０℃２０分間還元洗浄
し、脱水乾燥後、Ｌ値を測定した。同一色の場合は、数
値が小さいほど良く染着されていることを示す。上記の
場合による染浴を用いた染色方法において、Ｌ値が５０
以下の水準を、染着したと判定した。Dye: Astrazon Golden Yellow GL (CI Yellow 28) (manufactured by Dyster) 0.1% owf Kayacryl Red GL (CI Red 29) (manufactured by Nippon Kayaku) 2.0% owf Aizen Cathilon Blue 8.0% owf Auxiliary agent: "Neodespon AC" (Morin Chemical Co., Ltd.) 2 g / 1 Acetic acid 1 g / 1 Sodium nitrate 20 g / 1 "Teryl Carrier A111" (Meisei Chemical Co., Ltd.) 20 g / 1 [CI of the dye name indicates the color number in the meaning of the color index] Dyeing was started at a bath ratio of 1:15, 60 ° C, and 13 minutes in 60 minutes.
The temperature was raised to 0 ° C., and staining was performed for 30 minutes. After dyeing, the substrate was washed by reduction in a bath containing a nonionic activator and a reducing agent at 80 ° C. for 20 minutes, dehydrated and dried, and the L value was measured. In the case of the same color, a smaller numerical value indicates better dyeing. In the dyeing method using the dyeing bath according to the above case, the L value is 50.
The following levels were judged to be dyed.
【００６５】実施例１のパラ系アラミド繊維は染料をよ
く吸着したが、比較例１のパラ系アラミド繊維は、ほと
んど染着されなかった。 ［実施例２〜４、比較例２〜４］実施例１で得られたパ
ラ系アラミド繊維ステープルに静電気防止、紡績性向上
を目的に界面活性剤を侵漬法にて付与した。The para-aramid fiber of Example 1 adsorbed the dye well, but the para-aramid fiber of Comparative Example 1 was hardly dyed. [Examples 2 to 4, Comparative Examples 2 to 4] A surfactant was applied to the para-aramid fiber staple obtained in Example 1 by a dipping method for the purpose of preventing static electricity and improving spinnability.
【００６６】これらのステープルは、染色工程まではポ
リ袋にて密閉して保管し水分の乾燥を防止して、前記染
色処方により綿染めによってダークブルーに染色した。
同ステープルの物性は、繊度１．５ｄ、繊維長５１ｍｍ
の引張強度２３ｇ／ｄ、破断伸度３％、熱分解温度５０
０℃であった。These staples were kept sealed in a plastic bag until the dyeing step to prevent moisture from drying out, and were dyed dark blue by cotton dyeing according to the above-mentioned dyeing recipe.
The physical properties of the staple are fineness 1.5d, fiber length 51mm
Tensile strength 23 g / d, elongation at break 3%, thermal decomposition temperature 50
It was 0 ° C.
【００６７】これらの染色されたパラ系アラミド短繊維
１００％を鞘成分の短繊維束Ａとして、通常の２インチ
紡績方法で、太さ０．６ｇ／ｍの粗糸を作成した。Using these dyed para-aramid short fibers 100% as the short fiber bundle A of the sheath component, a roving yarn having a thickness of 0.6 g / m was prepared by a usual 2-inch spinning method.
【００６８】芯成分として短繊維束Ｂであるポリエステ
ル短繊維，繊度１．５ｄ、繊維長５１ｍｍを通常の２イ
ンチ紡績方法で、０．７、０．３、０．２ｇ／ｍの粗糸
を作成した。各々の粗糸を用い、一対のフロントテーパ
ーローラーを有する２インチリング精紡機に仕掛け、鞘
成分の短繊維束Ａの粗糸をトランペットを通してフロン
トローラーの送り出し量の高い側へバックローラーから
供給し、フロントローラーの送り出し量の低い供給側へ
芯成分のポリエステル短繊維束Ｂをトランペットを通し
てバックローラー、フロントローラーへと供給した。精
紡トータルドラフト３３．０〜２０．４倍で、芯鞘型複
合紡績糸の番手を１５S （綿番手）、撚係数はＫ＝３．
５（１３．６Ｔ／ｉｎ）とした。両フリースの間隔を５
ｍｍになるようにトランペットとガイドの間隔およびコ
レクターで調整した後ドラフトし合体させ通常の方法で
糸管に巻き取り、鞘成分の染色されたパラ系アラミド短
繊維が紡績糸に占める割合が４６．２、６６．７、７
５．０％の３種（比較例２、実施例２、実施例３）ポリ
エステル短繊維が紡績糸に占める割合が５３．８、３
３．３、２５．０％であった。As a core component, a short fiber bundle B, a polyester short fiber having a fineness of 1.5 d and a fiber length of 51 mm, was roasted at 0.7, 0.3, 0.2 g / m by a usual 2-inch spinning method. Created. Using each roving, it is set on a 2 inch ring spinning machine having a pair of front taper rollers, and the roving of the short fiber bundle A of the sheath component is supplied from the back roller to the higher side of the front roller sending amount through the trumpet, The polyester short fiber bundle B of the core component was supplied to the back roller and the front roller through the trumpet to the supply side of the front roller where the feed amount was low. The spinning total draft is 33.0 to 20.4 times, the core-sheath type composite spun yarn count is 15 S (cotton count), and the twist coefficient is K = 3.0.
5 (13.6 T / in). 5 spaces between both fleece
After adjusting the distance between the trumpet and the guide and the collector so as to obtain a diameter of 0.6 mm, the mixture is drafted and united, wound into a yarn tube by a usual method, and the ratio of the para-aramid short fibers dyed in the sheath component to the spun yarn is 46. 2,66.7,7
5.0% of three types (Comparative Example 2, Example 2, and Example 3) The ratio of polyester staple fiber to spun yarn is 53.8, 3
3.3 and 25.0%.
【００６９】また、比較例３として芯、鞘成分いずれも
比較例１で得た染まりにくいパラ系アラミド短繊維１０
０％使いで芯、鞘比率５０％／５０％の紡績糸１５S 、
Ｋ＝３．５を実施例２と同様にフロントテーパーローラ
ーを有する精紡機を用い複合加工して得た。As Comparative Example 3, para-aramid staple fiber 10 which was difficult to be dyed was obtained in Comparative Example 1 in both core and sheath components.
Spun yarn 15 S with 0% core and 50% / 50% sheath ratio,
K = 3.5 was obtained by composite processing using a spinning machine having a front taper roller in the same manner as in Example 2.
【００７０】また、実施例４と比較例４として芯成分の
短繊維束Ｂをポリエステル５０％／木綿（米綿コーマ
綿）５０％の０．４ｇ／ｍと０．３ｇ／ｍの粗糸を作成
し鞘成分として本発明の染色されたパラ系アラミド短繊
維１００％の１．４ｇ／ｍの粗糸を作成し、実施例２と
同様にフロントテーパーローラーを有する精紡機を用い
複合加工して１５S 、Ｋ＝３．５鞘成分の染色されたパ
ラ系アラミド短繊維が紡績糸に占める割合が７７．８％
と８２．４％の芯鞘型複合紡績糸を得た。ポリエステル
短繊維の紡績糸に占める割合が１１．１％、８．８％
（実施例４、比較例４）であった。Further, as Example 4 and Comparative Example 4, the short fiber bundle B of the core component was prepared by mixing 0.4 g / m and 0.3 g / m roving of 50% polyester / 50% cotton (combed cotton). A 1.4 g / m roving of 100% dyed para-aramid short fiber of the present invention was prepared as a sheath component, and subjected to composite processing using a spinning machine having a front taper roller in the same manner as in Example 2. 15S , K = 3.5 The ratio of para-aramid short fibers dyed with a sheath component in the spun yarn is 77.8%.
And 82.4% of a core-sheath composite spun yarn. Polyester short fiber accounts for 11.1%, 8.8% of spun yarn
(Example 4, Comparative Example 4).
【００７１】これら７種の紡績糸を９０℃×２０分の撚
止めセットを行いそれぞれ１００％使いで平織物を作成
した、織成に際して経糸には糊剤を付与した、織密度は
経糸７８本／ｉｎ、緯糸６５本／ｉｎ、織幅９８ｃｍを
作成後、パラ系アラミド繊維の織物表面への出現状態
（被覆状態）、染着度（Ｌ値）、耐切創性、耐熱性、プ
リーツ性を評価した。These seven types of spun yarns were twisted and set at 90 ° C. for 20 minutes to prepare plain woven fabrics using 100% of each yarn. A sizing agent was applied to the warp during weaving, and the weaving density was 78 warp yarns. / In, 65 wefts / in, 98 cm weave width, and then the appearance of para-aramid fiber on the fabric surface (covering state), the degree of dyeing (L value), cut resistance, heat resistance and pleating property evaluated.
【００７２】表２に示すように紡績糸に占めるポリエス
テル繊維の割合が５３．８％の比較例２はプリーツ性、
防しわ性などの形態保持性は良好であるが、紡績糸に占
める芯成分のポリエステル繊維の混紡割合が高くパラ系
アラミド繊維による被覆不足により、パラ系アラミド繊
維の機能特性が十分に発揮できず染着度Ｌ値も５２．８
と高く劣り、耐切創性、耐熱性などの機能特性が劣るも
のであった、染色されたパラ系アラミド繊維が紡績糸に
占める割合が８２．４％の比較例４、従来のパラ系アラ
ミド繊維１００％の比較例３の紡績糸はパラ系アラミド
繊維の機能特性、すなわち耐切創性、耐熱性は発揮され
るが紡績糸中に占めるポリエステル繊維の割合が５．６
％と０％と少なく、プリーツ性などの形態保持性が劣
り、Ｌ値６５．５と高く染色性が劣るものであった。As shown in Table 2, in Comparative Example 2 in which the proportion of the polyester fiber in the spun yarn was 53.8%,
Although the shape retention properties such as wrinkle resistance are good, the blending ratio of the polyester fiber of the core component in the spun yarn is high and the coating properties of the para-aramid fiber are insufficient, so that the functional properties of the para-aramid fiber cannot be fully exhibited. The dyeing degree L value is also 52.8.
Comparative Example 4, in which the ratio of dyed para-aramid fiber to the spun yarn was 82.4%, which was inferior in functional properties such as cut resistance and heat resistance, and the conventional para-aramid fiber 100% of the spun yarn of Comparative Example 3 exhibits the functional properties of para-aramid fiber, that is, cut resistance and heat resistance, but the proportion of the polyester fiber in the spun yarn is 5.6.
% And as low as 0%, the form retention such as pleating property was inferior, and the L value was as high as 65.5, and the dyeability was inferior.
【００７３】本発明の実施例２〜４は紡績糸に占める染
色されたパラ系アラミド繊維の混紡割合が高く、ポリエ
ステル繊維の被覆性が良く、糸、織物表面を染色された
パラ系アラミド繊維が覆いパラ系アラミド繊維の機能特
性を発揮し、プリーツ性などの形態保持性をも兼ね備え
た良好なものであった。In Examples 2 to 4 of the present invention, the blended ratio of the dyed para-aramid fiber in the spun yarn was high, the coatability of the polyester fiber was good, and the para-aramid fiber dyed on the surface of the yarn or woven fabric was used. It exhibited the functional characteristics of the covering para-aramid fiber and was good in that it also had shape retention properties such as pleating properties.
【００７４】[0074]
【表２】 [Table 2]
【００７５】［実施例５、実施例６］鞘成分の短繊維束
として、本発明の繊度１．５ｄ、繊維長３８ｍｍのダー
クブルーに染色されたパラ系アラミド短繊維と、繊度
１．５ｄ、繊維長３８ｍｍのダークブルーに着色された
原着のメタ系アラミド短繊維［デュポン社製“ノーメッ
クス”（デュポン社登録商標）］を５０／５０％（実施
例５）の比率で混紡したものを通常の綿紡績方法で、太
さ０．３ｇ／ｍの粗糸を作成し、実施例２と同様にポリ
エステル短繊維１００％、０．３ｇ／ｍの粗糸を芯成分
として複合加工し１５S 、Ｋ＝３．５の紡績糸を得た。
また、実施例５の染色されたパラ系アラミド短繊維を、
繊度５ｄ、繊維長８９ｍｍ、原着のメタ系アラミド短繊
維を繊度１．５ｄ、繊維長７６ｍｍに変え、それぞれを
５０／５０％（実施例６）の割合で混紡し実施例２と同
様にポリエステル短繊維１００％、０．３ｇ／ｍの粗糸
を芯成分として複合加工し１５S 、Ｋ＝３．５の紡績糸
を得て実施例２と同様に平織物を作成後布帛評価し結果
を表２に表した。[Examples 5 and 6] As a short fiber bundle of a sheath component, a para-aramid short fiber dyed in dark blue having a fineness of 1.5 d and a fiber length of 38 mm according to the present invention and a fineness of 1.5 d were used. A blend of 50-50% (Example 5) blend of original meta-aramid staple fibers [DuPont "Nomex" (registered trademark of DuPont)] colored 38 mm dark blue of cotton spinning method, to create a roving of thickness 0.3 g / m, likewise polyester staple fiber 100% example 2 were combined machining as a core component rovings 0.3 g / m 15 S, A spun yarn with K = 3.5 was obtained.
Further, the dyed para-aramid short fibers of Example 5 were
Change the fineness of 5d, the fiber length to 89mm, and the original meta-aramid short fiber to 1.5d and the fiber length to 76mm, and blend each with a ratio of 50/50% (Example 6). Composite processing was performed using 100% short fibers and a roving of 0.3 g / m as a core component to obtain a spun yarn of 15 S , K = 3.5. A plain woven fabric was prepared in the same manner as in Example 2, and the cloth was evaluated. The results are shown in Table 2.
【００７６】染色されたパラ系アラミド繊維の単繊維デ
ニールを５デニールにした実施例６は、染着度Ｌ値４
７．６と低く染色性良好であり耐熱、耐切創などの機能
特性、プリーツ性などの形態保持性も良好であるが、経
糸開口不良により製織性が低下し、布帛が粗硬で防護被
服としてはやや劣るものであった。鞘成分として“ケブ
ラー”と“ノーメックス”の繊度１．５ｄ、繊維長３８
ｍｍをそれぞれ５０／５０％の割合で混紡した実施例５
は全芳香族ポリアミド繊維の特性である耐切創性、耐熱
性などの高機能特性を十分に発揮し、Ｌ値４８．５と染
色性良好であり色彩豊かでカラフルであり、プリーツ性
などの形態保持性をも兼ね備え、布帛がソフトでしなや
かでスポーツ衣料や防護衣料に適した優れた布帛であっ
た。 ［実施例７〜８］芯、鞘成分繊維および混紡率、複合方
法を実施例２と同様にして、撚係数をＫ＝２．５（９．
７Ｔ／ｉｎ）にした実施例７、Ｋ＝６．２（２４．０Ｔ
／ｉｎ）の実施例８の紡績糸を作成した、撚係数Ｋ＝
２．５の実施例７は芯、鞘の複合加工において芯、鞘の
合体性が悪く分離して操業性の低下がみられた。Ｋ＝
６．２の実施例８は精紡工程における複合加工において
二重撚の発生が時々生じた。 ［実施例９〜１０、比較例５］実施例２の１５S 複合紡
績糸を織物全体重量の２５％（比較例５）、３０％（実
施例９）、１００％（実施例１０）になるように経糸、
緯糸に均一に用い、平織物を作成した。ベース糸として
ダークブルーに染色されたＴ６５％木綿３５％、１
５S 、Ｋ＝３．４のサイロスパン糸を９０℃×２０分の
撚止めをおこない用いた。織成に際して経糸に糊剤を付
与した。織密度は経糸７８本／ｉｎ、緯糸６５本／ｉｎ
であり、織幅９８ｃｍのものであった。布帛評価結果を
表３に示した。In Example 6 in which the single fiber denier of the dyed para-aramid fiber was set to 5 denier, the dyeing degree L value was 4
It has good dyeing properties as low as 7.6, and has good heat resistance, functional properties such as cut resistance, and good shape retention such as pleating properties. However, poor weaving due to poor warp shedding makes the fabric rough and hard, making it a protective clothing. Was somewhat inferior. "Kevlar" and "Nomex" fineness 1.5d, fiber length 38 as sheath component
Example 5 in which each fiber was blended at a ratio of 50/50%.
Is fully aromatic polyamide fiber, exhibiting high-performance properties such as cut resistance and heat resistance, and has good L value of 48.5, good dyeability, rich color and colorfulness, and pleated properties. The fabric was also excellent in holding properties, and was soft and flexible, and was suitable for sports clothing and protective clothing. [Examples 7 to 8] The core, the sheath component fiber, the blending ratio, and the compounding method were the same as those in Example 2, and the twist coefficient was K = 2.5 (9.
7T / in), K = 6.2 (24.0 T)
/ In), a twist coefficient K =
In Example 7 of 2.5, in the composite processing of the core and the sheath, the cohesion of the core and the sheath was poor and the operability was reduced due to separation. K =
In Example 6.2 of 6.2, the occurrence of double twist sometimes occurred in the composite processing in the spinning process. [Example 9-10, Comparative Example 5] 15 S composite yarn 25% of the total weight fabric of Example 2 (Comparative Example 5), of 30% (Example 9), 100% (Example 10) Like warp,
A plain weave was prepared by uniformly using the weft. T65% cotton 35% dyed in dark blue as base yarn, 1
Silospan yarn having 5 S and K = 3.4 was twisted at 90 ° C. for 20 minutes and used. A sizing agent was applied to the warp during weaving. The weaving density is 78 warps / in and 65 wefts / in.
With a woven width of 98 cm. Table 3 shows the evaluation results of the cloth.
【００７７】本発明糸を２５％使用した比較例５はプリ
ーツ性などの形態保持性は良好であったが、耐熱、耐切
創などの全芳香族ポリアミド繊維の高機能特性が劣るも
のであった。実施例９、実施例１０は全芳香族ポリアミ
ド繊維の高機能特性を十分に発揮し、Ｌ値４６．８と染
色性良好であり、プリーツ性などの形態保持性をも兼ね
備えた優れた布帛であった。Comparative Example 5 using 25% of the yarn of the present invention had good shape retention properties such as pleating properties, but was inferior in high-performance properties of wholly aromatic polyamide fibers such as heat resistance and cut resistance. . Example 9 and Example 10 are excellent fabrics which fully exhibit the high-performance properties of the wholly aromatic polyamide fiber, have an L value of 46.8, have good dyeing properties, and also have form retention properties such as pleating properties. there were.
【００７８】また、実施例９、実施例１０の布帛をスラ
ックスに仕立て、仕立て栄えを目視評価した、ポリエス
テル繊維の持つ仕立て栄えの良さが現れ、染色性良好で
色鮮やかで良好なスラックスであり、着用評価を１０名
にて実施した結果、耐熱、耐切創はもちろんプリーツ保
持性も良好であり好評を得た。Further, the fabrics of Example 9 and Example 10 were tailored into slacks, and the tailoring prosperity was evaluated by visual inspection. As a result of the wearing evaluation performed by 10 persons, the pleat retention as well as the heat resistance and the cut resistance were good, and the evaluation was favorable.
【００７９】[0079]
【表３】 [Table 3]
【００８０】[0080]
【発明の効果】以上のごとく、本発明の芯鞘型複合紡績
糸および布帛は、芯部を構成するポリエステル短繊維あ
るいはポリエステル短繊維混紡糸条からなる短繊維束
を、鞘部を構成する本発明の染色されたパラ系アラミド
繊維、または染色されたパラ系アラミド繊維とメタ系ア
ラミド繊維を含む全芳香族ポリアミド短繊維束で被覆さ
せることにより、全芳香族ポリアミド繊維の持つ耐切創
性、耐熱性などの優れた高機能特性を損なうことなく全
芳香族ポリアミド繊維の持つ欠点である染色性、プリー
ツ性、防しわ性、形態保持性を大幅に改善して高機能特
性の要求される防護衣服用分野やスポーツ衣料に色彩豊
かな好適な布帛を提供することができるものである。As described above, the core-sheath type composite spun yarn and fabric of the present invention comprise a polyester short fiber constituting a core portion or a short fiber bundle comprising a polyester short fiber blended yarn, and a yarn forming a sheath portion. By coating with the dyed para-aramid fiber of the present invention, or a wholly aromatic polyamide short fiber bundle containing the dyed para-aramid fiber and meta-aramid fiber, the cut resistance and heat resistance of the wholly aromatic polyamide fiber Protective clothing that requires highly functional properties by greatly improving the dyeing properties, pleating properties, wrinkle resistance, and form retention that are the drawbacks of wholly aromatic polyamide fibers without compromising excellent high-performance properties such as properties. The present invention can provide a colorful and suitable fabric for use fields and sports clothing.
【図１】本発明の芯鞘型複合紡績糸を製造する精紡機の
一例を示す概略図である。FIG. 1 is a schematic view showing an example of a spinning machine for producing a core-sheath composite spun yarn of the present invention.
Ａ、Ｂ：短繊維束 １ａ，１ｂ：トランペット ２：バックローラー ３：エプロンドラフト ４ａ，４ｂ：テーパーフロントローラー ５：芯鞘型複合紡績糸 ６：リング ７：トラベラ ８：糸管 A, B: short fiber bundle 1a, 1b: trumpet 2: back roller 3: apron raft 4a, 4b: tapered front roller 5: core-sheath composite spun yarn 6: ring 7: traveler 8: yarn tube
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｄ０４Ｂ 1/16 Ｄ０４Ｂ 1/16 (72)発明者 波多野 武 大阪市北区中之島３丁目４番18号 東レ・ デュポン株式会社大阪本社内 (72)発明者 豊村 由里子 滋賀県大津市大江１丁目１番１号 東レ株 式会社瀬田工場内 Ｆターム(参考） 4L002 AA06 AB01 AC06 DA04 FA01 4L036 MA05 MA06 MA08 MA35 PA31 PA33 RA25 UA16 UA25 4L048 AA25 AA48 AA53 AB00 AB05 AC07 AC09 BA01 BA02 CA01 CA06 CA14 DA01 DA03 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) D04B 1/16 D04B 1/16 (72) Inventor Takeshi Hatano 3-4-1-18 Nakanoshima, Kita-ku, Osaka-Toray・ DuPont Co., Ltd. Osaka Head Office (72) Inventor Yuriko Toyomura 1-1-1, Oe, Otsu City, Shiga Prefecture F-term in Toray Industries, Inc. Seta Plant (Reference) 4L002 AA06 AB01 AC06 DA04 FA01 4L036 MA05 MA06 MA08 MA35 PA31 PA33 RA25 UA16 UA25 4L048 AA25 AA48 AA53 AB00 AB05 AC07 AC09 BA01 BA02 CA01 CA06 CA14 DA01 DA03
Claims (11)
色された全芳香族ポリアミド短繊維を含む鞘成分が５０
〜７０重量％で構成され、少なくともポリエステル短繊
維を含む芯成分が３０〜５０重量％で構成されてなると
ともに、前記染色された全芳香族ポリアミド短繊維の紡
績糸に占める割合が５０〜９０重量％であり、かつポリ
エステル短繊維の紡績糸に占める割合が１０〜３５重量
％であることを特徴とする芯鞘型複合紡績糸。1. A core / sheath type composite spun yarn, wherein a sheath component containing at least a dyed wholly aromatic polyamide short fiber is 50%.
And at least 30 to 50% by weight of a core component containing polyester short fibers, and the ratio of the dyed wholly aromatic polyamide short fibers to the spun yarn is 50 to 90% by weight. %, And the ratio of the polyester short fiber to the spun yarn is 10 to 35% by weight.
繊維がパラ系アラミド短繊維であることを特徴とする請
求項１に記載の芯鞘型複合紡績糸。2. The core-sheath composite spun yarn according to claim 1, wherein the wholly aromatic polyamide short fiber dyed in the sheath component is a para-aramid short fiber.
されたパラ系アラミド短繊維とメタ系アラミド短繊維と
の混紡されたものであることを特徴とする請求項１に記
載の芯鞘型複合紡績糸。3. The core / sheath according to claim 1, wherein the wholly aromatic polyamide short fibers of the sheath component are a blend of dyed para-aramid short fibers and meta-aramid short fibers. Type composite spun yarn.
がポリパラフェニレンテレフタルアミド（ＰＰＴＡ）短
繊維であることを特徴とする請求項２または３のいずれ
かに記載の芯鞘型複合紡績糸。4. The core-sheath composite spinning according to claim 2, wherein the para-aramid short fibers dyed in the sheath component are polyparaphenylene terephthalamide (PPTA) short fibers. yarn.
に占める割合が２５〜９０重量％、メタ系アラミド短繊
維が紡績糸に占める割合が６０重量％以下であることを
特徴とする請求項３に記載の芯鞘型複合紡績糸。5. The dyed para-aramid short fiber accounts for 25 to 90% by weight of the spun yarn, and the meta-aramid short fiber accounts for 60% by weight or less of the spun yarn. Item 4. A core-sheath composite spun yarn according to item 3.
繊維を２０重量％以内、鞘成分にメタ系アラミド短繊維
を２５〜５０重量％混紡したことを特徴とする請求項１
〜５のいずれかに記載の芯鞘型複合紡績糸。6. A fiber according to claim 1, characterized in that the core component is a blend of less than 20% by weight of a wholly aromatic polyamide short fiber dyed and a sheath component of 25 to 50% by weight of a meta-aramid short fiber.
6. The core-sheath composite spun yarn according to any one of items 5 to 5.
％、またはポリエステル短繊維と、染色された全芳香族
ポリアミド短繊維、天然繊維およびセルロース系繊維の
少なくとも１種から選ばれた繊維との混紡糸であること
を特徴とする請求項１〜６のいずれかに記載の芯鞘型複
合紡績糸。7. A mixed yarn comprising 100% by weight of a polyester short fiber or a polyester short fiber and a fiber selected from at least one of a dyed wholly aromatic polyamide short fiber, a natural fiber and a cellulosic fiber. The core-sheath composite spun yarn according to any one of claims 1 to 6, characterized in that:
度ＩＶ（ηinh ）を持つＰＰＴＡと濃硫酸から紡糸用ド
ープをつくり、該ドープを紡糸口金の細孔を通して一旦
空気中に紡出し、直ちに水中に導き凝固させ、高強度、
高弾性率のフィラメントを形成する工程と、該フィラメ
ントに捲縮を与えカットしてステープルとなす工程と、
該フィラメントを染色する工程を連続することなく別々
の工程で実施する方法において、染色前のパラ系アラミ
ド繊維の引張強度が１５ｇ／ｄ以上、結晶サイズ（１１
０方向）が３０〜５５オングストロームであり、染色前
の水分含量が常に８％以上に維持して形成されたもので
あることを特徴とする請求項２〜７のいずれかに記載の
芯鞘型複合紡績糸。8. A para-aramid staple fiber is prepared by spinning dope from PPTA having an intrinsic viscosity IV (ηinh) of 5 or more and concentrated sulfuric acid, and the dope is once spun into the air through pores of a spinneret. Immediately lead to water and solidify, high strength,
A step of forming a filament having a high elastic modulus, a step of forming a staple by cutting the filament by crimping the filament,
In a method in which the step of dyeing the filament is performed in a separate step without being continuous, the tensile strength of the para-aramid fiber before dyeing is 15 g / d or more and the crystal size (11
The core-sheath type according to any one of claims 2 to 7, wherein (0 direction) is 30 to 55 angstroms and the water content before dyeing is always maintained at 8% or more. Composite spun yarn.
染色されたパラ系アラミド短繊維とメタ系アラミド短繊
維の単繊維繊度が０．５〜４．５デニールであり、撚係
数Ｋが２．８〜６．０である請求項２〜８のいずれかに
記載の芯鞘型複合紡績糸。9. A dyed para-aramid short fiber or a dyed para-aramid short fiber and a meta-aramid short fiber having a single fiber fineness of 0.5 to 4.5 denier and a twist coefficient K of 2 The core-sheath composite spun yarn according to any one of claims 2 to 8, which has a viscosity of from 0.8 to 6.0.
複合紡績糸を布帛重量の３０〜１００重量％の範囲で用
いてなることを特徴とする布帛。10. A fabric comprising the core-sheath composite spun yarn according to claim 1 in an amount of 30 to 100% by weight of the fabric.
服用であることを特徴とする請求項１０に記載の布帛。11. The fabric according to claim 10, which is used for clothing for outdoor sports or protective clothing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14091299A JP4363700B2 (en) | 1999-05-21 | 1999-05-21 | Composite spun yarn and fabric using the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14091299A JP4363700B2 (en) | 1999-05-21 | 1999-05-21 | Composite spun yarn and fabric using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000328384A true JP2000328384A (en) | 2000-11-28 |
| JP4363700B2 JP4363700B2 (en) | 2009-11-11 |
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ID=15279718
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14091299A Expired - Fee Related JP4363700B2 (en) | 1999-05-21 | 1999-05-21 | Composite spun yarn and fabric using the same |
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| Country | Link |
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Cited By (14)
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|---|---|---|---|---|
| JP2001172884A (en) * | 1999-12-21 | 2001-06-26 | Du Pont Toray Co Ltd | Method of dyeing wholly aromatic aramid fiber and wholly aromatic aramid fiber dyed by the method |
| JP2005511915A (en) * | 2001-12-06 | 2005-04-28 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Method for imparting retention to shaped non-thermoplastic fibrous materials |
| JP2007016343A (en) * | 2005-07-07 | 2007-01-25 | Teijin Techno Products Ltd | Wholly aromatic polyamide fiber structure |
| WO2009014007A1 (en) * | 2007-07-25 | 2009-01-29 | The Japan Wool Textile Co., Ltd. | Multilayer structured spun yarn, process for producing the same, and, fabricated from the yarn, heat-resistant fabric and heat-resistant protective suit |
| JP2012154487A (en) * | 2004-06-23 | 2012-08-16 | Dunlop Oil & Marine Ltd | Hybrid hose reinforcement |
| JP2012202001A (en) * | 2011-03-25 | 2012-10-22 | Teijin Techno Products Ltd | Cut-resistant yarn and fabric containing the same |
| JP2013002026A (en) * | 2011-06-21 | 2013-01-07 | Teijin Techno Products Ltd | Core-sheath type composite yarn |
| JP5972420B1 (en) * | 2015-03-18 | 2016-08-17 | 日本毛織株式会社 | Multi-layer structure spun yarn, heat-resistant fabric using the same, and heat-resistant protective clothing |
| JP2016186143A (en) * | 2015-03-27 | 2016-10-27 | 東レ・デュポン株式会社 | Crimped aramid staple fiber, and high-strength spun yarn, fiber structure and fender thereof |
| JP2017082351A (en) * | 2015-10-27 | 2017-05-18 | 東レ・デュポン株式会社 | Spun yarn, and woven or knitter fabric |
| CN110446805A (en) * | 2017-02-27 | 2019-11-12 | 帝人芳纶有限公司 | Fabric and the work clothes being produced from it |
| WO2021127224A1 (en) * | 2019-12-18 | 2021-06-24 | Patrick Yarn Mills, Inc. | Protective yarns and fabrics made with alternating fibrous blended rovings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001172884A (en) * | 1999-12-21 | 2001-06-26 | Du Pont Toray Co Ltd | Method of dyeing wholly aromatic aramid fiber and wholly aromatic aramid fiber dyed by the method |
| JP2005511915A (en) * | 2001-12-06 | 2005-04-28 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Method for imparting retention to shaped non-thermoplastic fibrous materials |
| JP2012154487A (en) * | 2004-06-23 | 2012-08-16 | Dunlop Oil & Marine Ltd | Hybrid hose reinforcement |
| JP2007016343A (en) * | 2005-07-07 | 2007-01-25 | Teijin Techno Products Ltd | Wholly aromatic polyamide fiber structure |
| WO2009014007A1 (en) * | 2007-07-25 | 2009-01-29 | The Japan Wool Textile Co., Ltd. | Multilayer structured spun yarn, process for producing the same, and, fabricated from the yarn, heat-resistant fabric and heat-resistant protective suit |
| US8209948B2 (en) | 2007-07-25 | 2012-07-03 | The Japan Wool Textile Co., Ltd. | Multilayer structured spun yarn, process for producing the same, and, fabricated from the yarn, heat-resistant fabric and heat-resistant protective suit |
| JP2012202001A (en) * | 2011-03-25 | 2012-10-22 | Teijin Techno Products Ltd | Cut-resistant yarn and fabric containing the same |
| JP2013002026A (en) * | 2011-06-21 | 2013-01-07 | Teijin Techno Products Ltd | Core-sheath type composite yarn |
| JP5972420B1 (en) * | 2015-03-18 | 2016-08-17 | 日本毛織株式会社 | Multi-layer structure spun yarn, heat-resistant fabric using the same, and heat-resistant protective clothing |
| WO2016147779A1 (en) * | 2015-03-18 | 2016-09-22 | 日本毛織株式会社 | Multilayered spun yarn, heat-resistant fabric obtained using same, and heat-resistant protective garment |
| JP2016186143A (en) * | 2015-03-27 | 2016-10-27 | 東レ・デュポン株式会社 | Crimped aramid staple fiber, and high-strength spun yarn, fiber structure and fender thereof |
| JP2017082351A (en) * | 2015-10-27 | 2017-05-18 | 東レ・デュポン株式会社 | Spun yarn, and woven or knitter fabric |
| CN110446805A (en) * | 2017-02-27 | 2019-11-12 | 帝人芳纶有限公司 | Fabric and the work clothes being produced from it |
| CN110446805B (en) * | 2017-02-27 | 2023-03-31 | 帝人芳纶有限公司 | Fabric and work clothes made therefrom |
| WO2021127224A1 (en) * | 2019-12-18 | 2021-06-24 | Patrick Yarn Mills, Inc. | Protective yarns and fabrics made with alternating fibrous blended rovings |
| US11598027B2 (en) | 2019-12-18 | 2023-03-07 | Patrick Yarn Mills, Inc. | Methods and systems for forming a composite yarn |
| CN113123035A (en) * | 2021-03-10 | 2021-07-16 | 王利平 | High silica glass fiber yarn preparation facilities excels in |
| CN113123035B (en) * | 2021-03-10 | 2022-12-13 | 营口鑫达环保科技有限公司 | High silica glass fiber yarn preparation facilities excels in |
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