JPH06341018A - Conjugate fiber and nonwoven fabric made thereof - Google Patents
Conjugate fiber and nonwoven fabric made thereofInfo
- Publication number
- JPH06341018A JPH06341018A JP12932693A JP12932693A JPH06341018A JP H06341018 A JPH06341018 A JP H06341018A JP 12932693 A JP12932693 A JP 12932693A JP 12932693 A JP12932693 A JP 12932693A JP H06341018 A JPH06341018 A JP H06341018A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- polymer
- polyester
- composite
- nonwoven fabric
- 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]
【産業上の利用分野】本発明はポリアミドとポリエステ
ルからなる不織布用複合短繊維であり、この複合短繊維
を用いて得られた不織布に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-woven composite short fiber made of polyamide and polyester, and relates to a non-woven fabric obtained by using this short composite fiber.
【０００２】[0002]
【従来の技術】最近、不織布が様々な分野および用途に
用いられるようになってきており、それに伴って不織布
に対して従来の取扱い性や強度等の機械的特性だけでは
なく、柔軟性等の風合の良さが求められている。そし
て、そのような要求に対して多層貼合型複合繊維等の分
割型複合繊維の使用が提案されている。2. Description of the Related Art Recently, non-woven fabrics have come to be used in various fields and applications, and accordingly, not only the conventional mechanical properties such as handleability and strength but also flexibility and the like have been improved. Good texture is required. Then, in order to meet such demands, the use of splittable conjugate fibers such as multilayer pasting conjugate fibers has been proposed.
【０００３】短繊維を用いて不織布、カ−ペット等を製
造するにはカ−ディング工程が必要であり、このカ−デ
ィングが可能な単糸繊度は一般に１デニ−ルが下限とさ
れており、それより細デニ−ルの場合には特殊なカ−デ
ィング技術や条件を採用する必要があった。互いに非相
溶性のポリマ−を複合させただけの従来の分割型複合繊
維はカ−ディング工程、またはそれより前の工程である
原綿製造工程で分割が生じ、カ−ディングが困難になる
という問題がある。このような問題を解決するために、
ポリアミドとスルホン酸の金属塩を共重合させたポリエ
ステルとの分割型複合繊維複合繊維を蒸気または熱水中
で延伸し、１００〜１６０℃の乾熱で定長熱処理する方
法が提案されている（特開平２−１６９７２２号公
報）。しかしながら、この分割型複合繊維もカ−ディン
グ工程における分割と製品における分割のコントロ−ル
が困難であること、特定の延伸、熱処理を行う必要があ
ること等実用化には問題が多い。A carding process is required to manufacture a nonwoven fabric, a carpet, etc., using short fibers, and the single yarn fineness capable of this carding is generally set to a lower limit of 1 denier. However, in the case of finer denier, it was necessary to adopt special carding techniques and conditions. In the conventional splittable conjugate fiber in which only polymers which are incompatible with each other are complexed, the splitting occurs in the carding step or in the raw cotton manufacturing step which is a step prior to that, which makes the carding difficult. There is. In order to solve such problems,
A method has been proposed in which split-type composite fibers of polyamide and polyester obtained by copolymerizing a metal salt of sulfonic acid are stretched in steam or hot water and heat-treated for a fixed length by dry heat at 100 to 160 ° C ( JP-A-2-169722). However, this splittable conjugate fiber also has many problems in practical use, such as difficulty in controlling splitting in a carding process and splitting in a product, and requiring specific stretching and heat treatment.
【０００４】[0004]
【発明が解決しようとする課題】本発明者等はポリアミ
ドとポリエステルとの複合繊維を用いてステ−プルとな
し、不織布等の繊維製品を作製する際、ポリアミドとポ
リエステルとの界面での剥離が原因で生じる繊維化工程
またはカ−ディング工程の工程性不良を改良するために
検討を進めてきた。トラブル発生の原因としては、用い
るポリアミドが複合紡糸時に、用いる紡糸油剤の水分、
または紡糸後のトウをケンス取りした後該ケンスを放置
している間に大気中の水分を吸湿することにより、歪み
が生じ、膨潤または収縮の寸法変化を起こし、ポリエス
テルとの界面剥離が進行するため、次の工程である延伸
工程、捲縮工程でさらに界面剥離と分離が進行し、得ら
れた原綿のフィブリル化が極めて高く、カ−ド通過性が
不良となることが見出だされた。DISCLOSURE OF THE INVENTION The present inventors have made a staple using composite fibers of polyamide and polyester, and when producing a fiber product such as a nonwoven fabric, peeling at the interface between polyamide and polyester Studies have been conducted to improve the processability defect of the fiberizing process or the carding process caused by the cause. The cause of the trouble is that the polyamide used has a water content in the spinning oil agent used during composite spinning,
Alternatively, after removing the tow after spinning, by absorbing moisture in the atmosphere while the can is left standing, distortion occurs, causing dimensional change of swelling or shrinking, and progress of interfacial peeling with polyester. Therefore, it was found that the interfacial peeling and separation proceeded further in the next step, the drawing step and the crimping step, the fibrillation of the obtained raw cotton was extremely high, and the card passing property became poor. .
【０００５】この問題点を解決するためにポリアミドと
複合するポリエステルにスルホン酸の金属塩を共重合さ
せることも検討したが、スルホン酸の金属塩を多量に共
重合させなければならず、コスト的に高価になるばかり
でなく、最終製品、たとえば不織布を高圧水流処理して
ポリエステルとポリアミドとを分割処理する場合、逆に
ポリエステルとポリアミドとの接着力が強すぎて分割処
理が難しいという問題が発生した。良好なカ−ド通過
性、良好な分割性という一見相反する要求を同時に満足
するためにいかなる方法があるか検討した結果、本発明
に至ったものである。In order to solve this problem, it was examined to copolymerize a metal salt of sulfonic acid with polyester compounded with polyamide. However, a large amount of metal salt of sulfonic acid must be copolymerized, which is costly. Not only is it expensive, but when the final product, for example, a non-woven fabric is subjected to high-pressure water flow treatment to divide polyester and polyamide, on the contrary, the problem arises that the adhesion between polyester and polyamide is too strong and division treatment is difficult. did. The present invention has been achieved as a result of examining what kind of method is available for simultaneously satisfying seemingly contradictory requirements of good card passage property and good division property.
【０００６】本発明の目的は、紡糸、延伸、捲縮等の繊
維化工程、カ−ディング工程において、分割型複合繊維
を構成する非相溶性ポリマ−の貼合構造部の剥離・分離
が発生することなく、繊維化工程性およびカ−ディング
通過性が良好であり、しかも強度が高いにも拘らず柔軟
性に富んだ絡合不織布を提供することにある。The object of the present invention is to cause peeling / separation of the bonding structure portion of the incompatible polymer constituting the splittable conjugate fiber in the fiberizing process such as spinning, drawing, crimping and the carding process. It is an object of the present invention to provide an entangled nonwoven fabric which is excellent in fiberizing processability and carding passability, and has high flexibility in spite of high strength.
【０００７】[0007]
【課題を解決するための手段】すなわち、本発明は、実
質的に芳香族ジカルボン酸と脂肪族ジアミンからなり、
熱変形温度が８０℃以上である非晶性ポリアミド２〜４
０重量％および結晶性熱可塑性ポリアミド６０〜９８重
量％からなるポリマ−（Ａ）、ならびに熱可塑性ポリエ
ステル（Ｂ）とから構成された複合短繊維であって、ポ
リマ−（Ａ）とポリエステル（Ｂ）の重量複合比率が１
５：８５〜８５：１５の範囲であり、しかもポリマ−
（Ａ）とポリエステル（Ｂ）との複合形状が、各単繊維
の長さ方向で実質的に同一形状でありながら、横断面形
状においては異なることを特徴とする不織布用複合短繊
維であり、該複合短繊維を１０重量％以上含む不織布で
あって、該不織布を構成する繊維が三次元的に絡合して
おり、縦方向の裂断長が３ｋｍ以上である不織布であ
る。That is, the present invention consists essentially of an aromatic dicarboxylic acid and an aliphatic diamine,
Amorphous polyamides 2 to 4 having a heat distortion temperature of 80 ° C or higher
A composite short fiber composed of a polymer (A) consisting of 0% by weight and 60 to 98% by weight of a crystalline thermoplastic polyamide, and a thermoplastic polyester (B), which comprises a polymer (A) and a polyester (B). ) Weight composite ratio is 1
It is in the range of 5:85 to 85:15 and is a polymer.
A composite short fiber for a non-woven fabric, characterized in that the composite shape of (A) and polyester (B) is substantially the same shape in the length direction of each single fiber, but different in cross-sectional shape. A nonwoven fabric containing 10% by weight or more of the composite short fibers, in which the fibers constituting the nonwoven fabric are three-dimensionally entangled, and the breaking length in the machine direction is 3 km or more.
【０００８】本発明の複合短繊維は、構成する一成分と
して用いられるポリマ−（Ａ）に非晶性ポリアミドを用
いることに特徴を有する。この非晶性ポリアミドは、実
質的に芳香族ジカルボン酸と脂肪族ジアミンからなるポ
リアミドである。The composite short fiber of the present invention is characterized in that an amorphous polyamide is used as the polymer (A) used as one component constituting the composite short fiber. This amorphous polyamide is a polyamide substantially composed of an aromatic dicarboxylic acid and an aliphatic diamine.
【０００９】芳香族ジカルボン酸としてはテレフタル
酸、イソフタル酸、２，６−ナフタリンジカルボン酸等
が挙げられ、本発明においてはテレフタル酸とイソフタ
ル酸の混合が好ましく、その混合割合はテレフタル酸が
１０〜５０モル％、とくに２０〜４０モル％、イソフタ
ル酸が９０〜５０モル％、とくに８０〜６０モル％の範
囲であることが好ましい。テレフタル酸の混合割合が５
０モル％を越えると非晶性ポリアミドが結晶性となり、
結晶性熱可塑性ポリアミドと相分離を生じ、混合性が不
良となり、複合紡糸性が低下する場合がある。また、脂
肪族ジアミンとしてはテトラメチレンジアミン、ヘキサ
メチレンジアミン、１，１０−ジアミノデカン等が挙げ
られ、本発明においてはヘキサメチレンジアミンが好ま
しい。上記の非晶性ポリアミドはアジピン酸、アゼライ
ン酸、セバシン酸等の脂肪族ジカルボン酸、ｐ−オキシ
安息香酸等のヒドロキシカルボン酸、ｍ−フェニレンジ
アミン、ｐ−フェニレンジアミン等のを芳香族ジアミン
を非晶性を阻害しない範囲内で含んでいても良い。Examples of the aromatic dicarboxylic acid include terephthalic acid, isophthalic acid and 2,6-naphthalene dicarboxylic acid. In the present invention, a mixture of terephthalic acid and isophthalic acid is preferable, and a mixing ratio of terephthalic acid is 10 to 10. It is preferable that 50 mol%, particularly 20 to 40 mol%, and isophthalic acid 90 to 50 mol%, particularly 80 to 60 mol%. The mixing ratio of terephthalic acid is 5
If it exceeds 0 mol%, the amorphous polyamide becomes crystalline,
Phase separation may occur with the crystalline thermoplastic polyamide, resulting in poor mixability and reduced composite spinnability. Examples of the aliphatic diamine include tetramethylenediamine, hexamethylenediamine, 1,10-diaminodecane and the like, and hexamethylenediamine is preferable in the present invention. The above-mentioned amorphous polyamide is a dicarboxylic acid such as adipic acid, azelaic acid and sebacic acid, a hydroxycarboxylic acid such as p-oxybenzoic acid, m-phenylenediamine, p-phenylenediamine and the like, and aromatic diamines are not added. It may be contained within a range that does not impair crystallinity.
【００１０】このようにして得られた非晶性ポリアミド
は、絶乾状態でのガラス転移温度が高く、さらに熱変形
温度が８０℃以上である。熱変形温度はＡＳＴＭ Ｄ−
６４８試験法に準拠し、両端自由支持にて１８．５ｋｇ
／ｃｍ↑２の荷重を加え、２℃／分にて昇温し、１／１
００インチたわんだ時の温度を示す。The amorphous polyamide thus obtained has a high glass transition temperature in an absolutely dry state and a heat distortion temperature of 80 ° C. or higher. Heat distortion temperature is ASTM D-
Conforming to the 648 test method, 18.5 kg with free support at both ends
/ Cm ↑ 2 is applied and the temperature is raised at 2 ° C / min to 1/1
Indicates the temperature when flexed by 00 inches.
【００１１】ポリマ−（Ａ）を構成する結晶性熱可塑性
ポリアミドとしては、ナイロン６、ナイロン６６、メタ
キシレンジアミンナイロン、ナイロン１２等を挙げるこ
とができ、これらは１種あるいは２種以上混合、または
共重合して用いることができる。また該結晶性熱可塑性
ポリアミドは繊維化が可能である重合度を有していれば
よい。Examples of the crystalline thermoplastic polyamide that constitutes the polymer (A) include nylon 6, nylon 66, metaxylene diamine nylon, nylon 12, and the like. These may be used alone or in combination of two or more. It can be copolymerized and used. Further, the crystalline thermoplastic polyamide may have a degree of polymerization capable of forming a fiber.
【００１２】上記の非晶性ポリアミドおよび結晶性熱可
塑性ポリアミドは、安定剤、紫外線吸収剤、蛍光増白
剤、変性剤、着色剤、顔料等の添加剤を必要に応じて含
有していても良い。The above-mentioned amorphous polyamide and crystalline thermoplastic polyamide may contain additives such as stabilizers, ultraviolet absorbers, optical brighteners, modifiers, colorants and pigments, if necessary. good.
【００１３】ポリマ−（Ａ）において、非晶性ポリアミ
ドの混合割合は２〜４０重量％の範囲内である。２重量
％未満では本発明の効果が十分に発現せず、一方４０重
量％を越えると本発明の効果は十分に発現するが、繊維
物性、とくに強度が低くなる。さらに紡糸時に単繊維間
の膠着が生じ、延伸性、カット性が不良となる。好まし
い混合割合は２〜３０重量％の範囲内である。In the polymer (A), the mixing ratio of the amorphous polyamide is within the range of 2-40% by weight. If it is less than 2% by weight, the effect of the present invention is not sufficiently expressed, while if it exceeds 40% by weight, the effect of the present invention is sufficiently expressed, but the physical properties of the fiber, particularly the strength is lowered. Furthermore, sticking occurs between single fibers during spinning, resulting in poor drawability and cutability. A preferred mixing ratio is within the range of 2 to 30% by weight.
【００１４】非晶性ポリアミドと結晶性熱可塑性ポリア
ミドとを特定量混合してなるポリマ−（Ａ）を一成分と
する複合繊維が、カ−ド通過性に優れ、さらに最終製品
である不織布の高圧水流による分割性に優れる理由は定
かではないが、以下のように推察される。すなわち、非
晶性ポリアミドはガラス転移温度が高く、かつ吸湿によ
る寸法変化がほとんど生じないため、たとえば紡糸後ケ
ンス取りされたトウが放置されていても大気中の水分に
よる寸法変化が起こらず、したがってポリエステル
（Ｂ）との界面の剥離が生じないため、延伸時、捲縮
時、カ−ディング時に繊維のフィブリル化が発生せず、
カ−ド通過性が良好となる。しかしながら不織布作製後
の高圧水流処理等の物理的な力に対抗する程にはポリマ
−（Ａ）とポリエステル（Ｂ）間の接着性が強くないの
で容易に分割が可能であると考えられる。また、非晶性
ポリアミドが結晶性熱可塑性ポリアミドと非常に相溶性
が良く、分子混合できることも理由の一つと考えられ
る。A composite fiber containing one component of a polymer (A), which is a mixture of an amorphous polyamide and a crystalline thermoplastic polyamide in a specific amount, has excellent card-passing property, and further, a nonwoven fabric as a final product. The reason why the high-pressure water stream excels in partitioning is not clear, but it is presumed as follows. That is, since the amorphous polyamide has a high glass transition temperature and hardly causes dimensional change due to moisture absorption, for example, dimensional change due to moisture in the atmosphere does not occur even if the tow taken after canning after spinning is left, Since peeling at the interface with the polyester (B) does not occur, fibrillation of fibers does not occur during stretching, crimping, or carding,
Good card passage. However, since the adhesiveness between the polymer (A) and the polyester (B) is not strong enough to withstand the physical force such as high pressure water flow treatment after the nonwoven fabric is produced, it is considered that the polymer (A) and the polyester (B) can be easily divided. It is also considered that one of the reasons is that the amorphous polyamide has very good compatibility with the crystalline thermoplastic polyamide and can be molecularly mixed.
【００１５】本発明の複合短繊維を構成する一成分とし
て用いられるポリエステル（Ｂ）としては、テレフタル
酸、イソフタル酸、２，６−ナフタリンジカルボン酸、
フタル酸、α，β−（４−カルボキシフェノキシ）エタ
ン、４，４−ジカルボキシジフェニル、５−ナトリウム
スルホイソフタル酸等の芳香族ジカルボン酸；アジピン
酸、セバシン酸、アゼライン酸等の脂肪族ジカルボン
酸；またはそれらのエステル形成性誘導体、エチレング
リコ−ル、ジエチレングリコ−ル、１，４−ブタンジオ
−ル、ネオペンチルグリコ−ル、１，６−ヘキサンジオ
−ル、シクロヘキサン−１，４−ジメタノ−ル、ポリエ
チレングリコ−ル、ポリテトラメチレングリコ−ル等の
ジオ−ル化合物から形成された繊維形成性ポリエステル
を挙げることができる。なかでも、ポリエステルの構成
単位の８０モル％以上、とくに９０モル％以上がエチレ
ンテレフタレ−ト単位および／またはブチレンテレフタ
レ−ト単位であるポリエステルが好ましい。該ポリエス
テルは、安定剤、紫外線吸収剤、蛍光増白剤、変性剤、
着色剤、顔料等の添加剤を必要に応じて含有していても
良い。As the polyester (B) used as one component constituting the composite staple fiber of the present invention, terephthalic acid, isophthalic acid, 2,6-naphthalene dicarboxylic acid,
Aromatic dicarboxylic acids such as phthalic acid, α, β- (4-carboxyphenoxy) ethane, 4,4-dicarboxydiphenyl and 5-sodium sulfoisophthalic acid; Aliphatic dicarboxylic acids such as adipic acid, sebacic acid and azelaic acid Or an ester-forming derivative thereof, ethylene glycol, diethylene glycol, 1,4-butanediol, neopentyl glycol, 1,6-hexanediol, cyclohexane-1,4-dimethanol, A fiber-forming polyester formed from a diol compound such as polyethylene glycol or polytetramethylene glycol can be mentioned. Among them, polyesters in which 80 mol% or more, particularly 90 mol% or more, of the constituent units of the polyester are ethylene terephthalate units and / or butylene terephthalate units are preferable. The polyester is a stabilizer, an ultraviolet absorber, an optical brightener, a modifier,
You may contain additives, such as a coloring agent and a pigment, as needed.
【００１６】ポリマ−（Ａ）とポリエステル（Ｂ）との
複合比率は（Ａ）／（Ｂ）＝１５／８５〜８５／１５
（重量比）、とくに２０／８０〜８０／２０であること
が好ましい。該複合比率外の場合、紡糸性が不良とな
る。The composite ratio of the polymer (A) and the polyester (B) is (A) / (B) = 15/85 to 85/15.
(Weight ratio), particularly preferably 20/80 to 80/20. Outside the composite ratio, the spinnability becomes poor.
【００１７】本発明においては、ポリマ−（Ａ）とポリ
エステル（Ｂ）との複合形状にも特徴を有する。すなわ
ち、各単繊維の長さ方向で実質的に同一形状でありなが
ら、横断面形状においては異なる複合短繊維である。
「各単繊維の横断面形状において異なる」とは、ポリマ
−（Ａ）とポリエステル（Ｂ）との複合形状が繊維の長
さ方向には実質的に同一形状でありながら、単繊維間に
おいてランダムに異なり、木目状多層混合構造、非円形
状の海島混合構造等の混合構造を有することを示す。た
とえば、図１にポリマ−（Ａ）とポリエステル（Ｂ）と
からなり複合比が（Ａ）：（Ｂ）＝１：１の複合繊維束
の繊維断面を示す。ポリマ−（Ａ）とポリエステル
（Ｂ）との複合形状が単繊維間でランダムに異なり、ポ
リマ−（Ａ）が層状分割層を形成している場合もあれ
ば、独立の島状分割層を形成している場合もある。ま
た、図２に単繊維断面の複合形状を示すが、（イ）はポ
リマ−（Ａ）とポリエステル（Ｂ）が極端に偏在化して
貼合わせ構造に似た断面形状を形成している例であり、
（ロ）はポリマ−（Ａ）とポリエステル（Ｂ）が多層状
に貼合わされた断面形状を形成している例であり、
（ハ）はポリマ−（Ａ）とポリエステル（Ｂ）のどちら
か一方が非円形の島状独立層を形成している例である。The present invention is also characterized by a composite shape of the polymer (A) and the polyester (B). That is, it is a composite short fiber having substantially the same shape in the length direction of each single fiber, but different in cross-sectional shape.
"Different in the cross-sectional shape of each single fiber" means that the composite shape of the polymer (A) and the polyester (B) is substantially the same shape in the length direction of the fiber, but the single fibers are random. It is shown that it has a mixed structure such as a wood grain-like multi-layer mixed structure and a non-circular sea-island mixed structure. For example, FIG. 1 shows a fiber cross section of a composite fiber bundle composed of a polymer (A) and a polyester (B) and having a composite ratio of (A) :( B) = 1: 1. In some cases, the composite shape of the polymer (A) and the polyester (B) differs randomly among the single fibers, and the polymer (A) forms a layered divided layer. In some cases, an independent islanded divided layer is formed. There are also cases. Further, FIG. 2 shows a composite shape of a single fiber cross section. (A) is an example in which the polymer (A) and the polyester (B) are extremely unevenly distributed to form a cross sectional shape similar to a laminated structure. Yes,
(B) is an example in which a polymer (A) and a polyester (B) are laminated to form a cross-sectional shape.
(C) is an example in which one of the polymer (A) and the polyester (B) forms a non-circular island-shaped independent layer.
【００１８】本発明の複合短繊維はこのような断面形状
を有していることにより、天然繊維に似た自然な斑と風
合、とくに嵩高さと柔軟な触感を有しており、そして不
織布にした時の全体の柔軟さを発現させることが可能に
なった。また、カ−ディング工程において、ポリマ−
（Ａ）とポリエステル（Ｂ）との界面剥離がわずかに見
られても、繊維集合体としてシリンダ−に巻き付いた
り、ネップが発生したりすることもなく、カ−ド通過性
が良好であるのもこのような繊維断面形状に起因すると
推定される。By virtue of having such a cross-sectional shape, the composite short fibers of the present invention have natural spots and texture similar to natural fibers, especially bulkiness and soft touch, and are It became possible to express the flexibility of the whole when doing. Also, in the carding process, the polymer
Even if the interfacial peeling between (A) and polyester (B) is slightly observed, it does not wind around the cylinder as a fiber assembly or generate a nep, and the card passing property is good. Is also presumed to be due to such a fiber cross-sectional shape.
【００１９】本発明の複合短繊維の製造方法は、通常、
複合紡糸法が適用される。その最も好ましい方法に用い
られる紡糸装置の口金部を図３に示す。以下、図３によ
り紡糸法を説明する。別々の押出機により溶融され押し
出されたポリマ−（Ａ）およびポリエステル（Ｂ）の溶
融流は、各々の計量機により所定量計量された後、サン
ドボックス３の濾過部１で濾過された後、各々の金属フ
ィルタ−２を経た後、ミキシングプレ−ト４に設けられ
た静止型混合器５で所定条件下混合され、分配板６の分
配路７を経て放射状に分配した後、紡糸口金の紡糸孔よ
り流出される。The method for producing the composite staple fiber of the present invention is usually
The composite spinning method is applied. The spinneret portion of the spinning apparatus used in the most preferable method is shown in FIG. The spinning method will be described below with reference to FIG. The melt flows of the polymer (A) and the polyester (B) melted and extruded by separate extruders were weighed by a predetermined amount by respective weighing machines, and then filtered by the filtration section 1 of the sandbox 3, After passing through each metal filter-2, they are mixed under a predetermined condition by a static mixer 5 provided in a mixing plate 4 and radially distributed through a distribution passage 7 of a distribution plate 6, and then spinning of a spinneret. It flows out from the hole.
【００２０】上記静止型混合器５の混合素子の数は目的
とする繊維構造に応じて適宜設定することができるが、
現在実用化されているものとして、Ｋｅｎｉｃｓ社の１
８０度左右ねじった羽を９０度ずらせて配列したｎエレ
メントを通過させると２↑ｎ層分割するタイプのスタチ
ックミキサ−等があるが、該スタチックミキサ−を使用
した場合はエレメント数を３〜８の範囲にすることが好
ましい。エレメント数が８を越えると、ポリマ−（Ａ）
とポリエステル（Ｂ）との混合性がよくなりすぎて均一
混合に近くなり、繊維化しても本発明でいう、各単繊維
の長さ方向で実質的に同一形状でありながら、横断面形
状においては異なる繊維は得られにくくなる。The number of mixing elements of the static mixer 5 can be appropriately set according to the desired fiber structure.
1 of Kenics, Inc. is currently in practical use.
There is a type of static mixer such as a type in which 2 ↑ n layers are divided by passing n elements arranged by displacing blades that are twisted 80 degrees left and right by 90 degrees, but when the static mixer is used, the number of elements is 3. It is preferably in the range of -8. If the number of elements exceeds 8, polymer (A)
And the polyester (B) are mixed together too much and become close to uniform mixing, and even if they are made into fibers, they have substantially the same shape in the longitudinal direction of each single fiber as referred to in the present invention, but in the cross-sectional shape. It is difficult to obtain different fibers.
【００２１】静止型混合器の混合素子数が最適であって
も、ポリマ−（Ａ）とポリエステル（Ｂ）とが接触を開
始してから紡糸孔より流出されるまでの滞留時間が長す
ぎると、各ポリマ−の加熱による分解が進み、紡糸時の
粘度低下、得られる繊維の着色が生じる場合がある。し
たがって、上記滞留時間は５分、とくに３分以内が好ま
しい。Even if the number of mixing elements of the static mixer is optimum, if the residence time from the start of contact between the polymer (A) and the polyester (B) to the flow out of the spinning hole is too long. However, the decomposition of each polymer due to heating may proceed, the viscosity during spinning may decrease, and the obtained fiber may be colored. Therefore, the residence time is preferably 5 minutes, particularly 3 minutes or less.
【００２２】このようにして得られた未延伸複合繊維を
６０℃以上かつ繊維相互が融着しない温度で熱延伸を行
なう。熱延伸は通常の水浴延伸装置を用いて行なうこと
ができる。熱延伸温度が６０℃未満の場合、ポリエステ
ル（Ｂ）の複合比率が高くなると繊維化収縮率が大きく
なるので好ましくない。一方繊維相互が融着しない温度
を越えて延伸した場合、繊維相互が融着を始め、延伸工
程で糸切れが発生して操業性が低下し、製品の均一性が
低下するので好ましくない。好ましくは６０〜９５℃の
範囲である。The unstretched composite fiber thus obtained is hot-stretched at a temperature of 60 ° C. or higher and at a temperature at which the fibers are not fused to each other. The hot drawing can be carried out using an ordinary water bath drawing apparatus. When the heat drawing temperature is lower than 60 ° C., the higher the composite ratio of the polyester (B) is, the higher the fiberizing shrinkage ratio is, which is not preferable. On the other hand, if the fibers are stretched above a temperature at which they do not fuse together, the fibers will begin to fuse together and yarn breakage will occur in the drawing process, which will reduce operability and reduce the uniformity of the product, which is not desirable. It is preferably in the range of 60 to 95 ° C.
【００２３】ついで、得られた延伸複合繊維に捲縮付与
処理を施す。捲縮付与処理は、通常のスタッファ型捲縮
付与装置等の捲縮付与装置を用いて行なうことができ
る。捲縮付与処理に引き続き、繊維に仕上げ油剤を付与
して乾燥した後、所定の長さに切断して短繊維とする。
短繊維長が２０〜１００ｍｍの範囲のものは乾式用不織
布として、また３〜１０ｍｍの範囲のものは湿式用不織
布として好適である。Then, the drawn composite fiber thus obtained is subjected to crimping treatment. The crimping treatment can be performed by using a crimping device such as a normal stuffer type crimping device. Subsequent to the crimping treatment, a finishing oil agent is applied to the fibers and dried, and then the fibers are cut into a predetermined length to obtain short fibers.
A short fiber length in the range of 20 to 100 mm is suitable as a dry nonwoven fabric, and a short fiber length in the range of 3 to 10 mm is suitable as a wet nonwoven fabric.
【００２４】上記短繊維からなる不織布について説明す
る。本発明の不織布は、上記複合短繊維１０重量％以上
からなる。１０重量％以上が上記複合短繊維からなるた
め、後述の分割処理により複合短繊維が分割して絡合し
やすく、強度がありしかも風合の柔らかい不織布を得る
ことができる。この不織布を構成する複合短繊維が１０
重量％未満の場合、繊維間の絡合が不十分であり、本発
明において目的とする不織布を得ることができない。本
発明の不織布において、複合短繊維と混合する他の短繊
維として通常の熱可塑性ポリマ−からなる短繊維、軟化
温度の比較的低い熱バインダ−繊維、レ−ヨン等の再生
繊維、あるいは木綿等の天然繊維を用いることができ、
また、上記複合短繊維のカ−ドウエッブと他素材のカ−
ドウエッブとの積層ウエッブとしてもよい。A non-woven fabric made of the above short fibers will be described. The nonwoven fabric of the present invention comprises 10% by weight or more of the above composite short fibers. Since 10% by weight or more is composed of the above-mentioned composite short fibers, the composite short fibers are easily divided and entangled by the division treatment described later, and a nonwoven fabric having strength and soft texture can be obtained. There are 10 composite short fibers constituting this non-woven fabric.
If it is less than wt%, the entanglement between the fibers is insufficient and the nonwoven fabric targeted in the present invention cannot be obtained. In the nonwoven fabric of the present invention, other short fibers mixed with the composite short fibers are made of ordinary thermoplastic polymers, short binders having a relatively low softening temperature, recycled fibers such as rayon, or cotton. Natural fibers of
In addition, the card web of the above-mentioned composite short fibers and the card of other materials
It may be a laminated web with a de-web.
【００２５】本発明の不織布の製造方法として、例えば
上記複合短繊維を用いてカ−ドウエッブを作成し、高圧
流体噴流により前記ウエッブに流体絡合処理を施して、
複合短繊維相互を三次元的に絡合させる方法、上記複合
短繊維と熱バインダ−繊維とを混綿し、カ−ド機により
カ−ディングして所定目付のウエッブを得た後、加熱し
て熱バインダ−繊維を溶融させ複合短繊維間を相互に接
着させる方法、上記複合短繊維と通常の熱可塑性ポリマ
−からなる短繊維あるいは天然繊維と混綿し、カ−ド機
によりカ−ディングして所定目付のウエッブを得た後、
高圧水流パンチング処理またはニ−ドルパンチング処理
する方法等、通常の方法が用いられる。As the method for producing the nonwoven fabric of the present invention, for example, a card web is prepared by using the above-mentioned composite short fibers, and the web is subjected to a fluid entanglement treatment by a high-pressure fluid jet,
A method of three-dimensionally intertwining composite short fibers, mixing the composite short fibers and a thermal binder fiber, and carding with a carding machine to obtain a web having a predetermined basis weight, and then heating. Method of melting the thermal binder fibers and adhering the composite short fibers to each other, mixing the short fibers of the composite short fibers and the usual thermoplastic polymer or natural fibers, and carding them with a carding machine. After getting the web with the predetermined weight,
A usual method such as a method of high pressure water punching or needle punching is used.
【００２６】流体噴流処理は液体または気体を噴き当
て、絡合処理を施すことであり、通常、絡合、分散を同
時に行なわせる点、かつ安全性において液体が好ましく
用いられる。液体中には、膨潤剤、溶剤等を混入させて
複合短繊維を分割化、絡合処理を行なってもよい。The fluid jet process is a process in which a liquid or a gas is sprayed and subjected to an entanglement process. Usually, a liquid is preferably used in terms of simultaneously performing entanglement and dispersion and in terms of safety. You may mix a swelling agent, a solvent, etc. in a liquid, and divide | segment a composite short fiber, and may perform an entanglement process.
【００２７】カ−ドウエッブは、通常、構成繊維の配合
割合によって異なり、カ−ド機の進行方向に配列したパ
ラレルウエッブ、ランダムに配列したランダムウエッ
ブ、両者の中間程度に配列したセミランダムウエッブ、
クロスラップウエッブ等があり、本発明の不織布はこれ
らのいずれであってもよい。The card web usually differs depending on the mixing ratio of the constituent fibers, and parallel webs arranged in the traveling direction of the card machine, random webs arranged randomly, semi-random webs arranged in the middle of the two,
There are cross-lap webs and the like, and the nonwoven fabric of the present invention may be any of these.
【００２８】本発明において、不織布を構成する複合短
繊維の分割は、上記の流体噴流処理により繊維の絡合と
同時に行なうことができる。また、複合短繊維と熱バイ
ンダ−繊維とを混綿した不織布、あるいはパンチング処
理を施した不織布はさらに高圧流体噴流を当てることに
より分割処理を施すことができる。In the present invention, the splitting of the composite short fibers constituting the non-woven fabric can be carried out at the same time as the entanglement of the fibers by the above fluid jet treatment. Further, the nonwoven fabric obtained by mixing the composite short fibers and the thermal binder fiber or the nonwoven fabric subjected to the punching treatment can be further subjected to the division treatment by applying a high-pressure fluid jet.
【００２９】高圧流体噴流は孔径の小さいノズルまたは
間隔の狭いスリットから噴射して、高速の柱状流または
カ−テン流として噴き当てる。流体噴流としては水が好
ましく、常温の水、３５〜８０℃程度に加温した水が使
用でき、繊維の分割を促進させるための処理剤を含んで
いてもよい。圧力条件は複合短繊維の分割のし易さで決
定するが、通常、５〜３００Ｋｇ／ｃｍ↑２程度の範囲
内で使用できる。５Ｋｇ／ｃｍ↑２未満では絡合・分割
効果が少なく、３００Ｋｇ／ｃｍ↑２を越えると、打撃
欠点や変形が生じ好ましくない。この流体噴流処理は不
織布の片面あるいは両面に行なうことができる。目付は
約２０ｇ／ｍ↑２〜約３００ｇ／ｍ↑２まで任意に可能
であるが、流体噴流による分割交絡を不織布の内部まで
行うためには約１５０ｇ／ｍ↑２以下が好ましい。The high-pressure fluid jet is jetted from a nozzle having a small hole diameter or a slit having a small interval, and is jetted as a high-speed columnar flow or a Karten flow. Water is preferably used as the fluid jet, and water at room temperature, which is heated to about 35 to 80 ° C., can be used, and may contain a treatment agent for promoting fiber division. The pressure condition is determined by the ease of splitting the composite short fibers, but it can usually be used within the range of about 5 to 300 kg / cm ↑ 2. If it is less than 5 Kg / cm ↑ 2, the entanglement / dividing effect is small, and if it exceeds 300 Kg / cm ↑ 2, hitting defects and deformation occur, which is not preferable. This fluid jet treatment can be applied to one or both sides of the nonwoven fabric. The basis weight can be arbitrarily set from about 20 g / m ↑ 2 to about 300 g / m ↑ 2, but about 150 g / m ↑ 2 or less is preferable in order to carry out the division entanglement by the fluid jet to the inside of the nonwoven fabric.
【００３０】分割後の細分化した複合短繊維の繊度はと
くに限定されるものではないが、通常、１．０デニ−ル
以下であることが好ましい。絡合・分割処理を施した不
織布は、繊維が密に交絡した面にカレンダ−処理、エン
ボス処理、染色・捺染等の着色処理などを施すことがで
きる。The fineness of the subdivided composite short fibers after division is not particularly limited, but is usually preferably 1.0 denier or less. The entangled / divided non-woven fabric can be subjected to a calendering treatment, an embossing treatment, a coloring treatment such as dyeing / printing, etc. on the surface in which the fibers are closely entangled.
【００３１】本発明の不織布は、裂断長が３ｋｍ以上
と、強度が高いうえに柔軟性をも有する。この不織布は
柔軟性を重視する人工皮革衣料分野はもちろんのこと、
ワイピングクロス、各種フィルタ−、タオル、フェ−シ
ング材等の衛生材料などに好ましく用いられる。The nonwoven fabric of the present invention has a breaking length of 3 km or more and has high strength and flexibility. This non-woven fabric is, of course, in the field of artificial leather clothing that emphasizes flexibility,
It is preferably used for sanitary materials such as wiping cloth, various filters, towels, facing materials and the like.
【００３２】以下、実施例により本発明を具体的に説明
するが、本発明はこれら実施例になんら限定されない。
なお、実施例において、不織布の強度は、不織布を巾１
ｃｍ、長さ１０ｃｍに裁断し、引張試験機（島津製作所
製、島津オ−トグラフ２０００Ａ）を用いて引張強度を
測定し、裂断長（ｋｍ）で示した。また、熱変形温度は
ＡＳＴＭ Ｄ−６４８試験法に準拠して測定し、ガラス
転移温度は示差走査熱量計（メトラ−社製、ＴＡ−３０
００型）を用い、窒素雰囲気中急冷非晶状態の試料に対
し、１０℃／分の昇温速度により測定した。Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to these Examples.
In the examples, the strength of the non-woven fabric is 1
cm, 10 cm in length, the tensile strength was measured using a tensile tester (Shimadzu Corporation, Shimadzu Autograph 2000A), and indicated by the breaking length (km). The heat distortion temperature was measured according to the ASTM D-648 test method, and the glass transition temperature was measured by a differential scanning calorimeter (TA-30 manufactured by Metra).
00 type) was used for the rapid cooling amorphous sample in a nitrogen atmosphere at a heating rate of 10 ° C./min.
【００３３】実施例１ 非晶性ポリアミドとして、テレフタル酸２５モル％、イ
ソフタル酸７５モル％、ヘキサメチレンジアミン１００
モル％からなり、絶乾状態でのガラス転移温度が１２５
℃、熱変形温度が１００℃のポリアミドを使用し、結晶
性ポリアミドとしてナイロン６（宇部興産（株））を使
用し、混合比が、非晶性ポリアミド／結晶性ポリアミド
＝２０／８０（重量比）のポリマ−（Ａ）を得た。ポリ
エステル（Ｂ）として極限粘度［η］＝０．６３（フェ
ノ−ルとテトラクロロエタンの当重量混合溶液を用いて
３０℃で測定した。）のポリエチレンテレフタレ−トを
使用した。ポリマ−（Ａ）とポリエステル（Ｂ）とが５
０／５０（重量比）になるように、各ポリマ−をギアポ
ンプで計量した後、紡糸パックに供給し、紡糸パック内
の５エレメントスタティックミキサ−（ケニックス社
製）で両ポリマ−による層状分割型重合体流を形成させ
て、１０００ホ−ルの丸孔ノズルから口金温度２８５℃
で吐出し、８００ｍ／分の紡糸速度で溶融紡糸し、単糸
約７デニ−ルの未延伸糸を得た。得られた未延伸糸を浴
温７５℃で３．８倍に延伸し、ついで機械捲縮を施した
後、１００℃の熱処理を行ない、３８ｍｍに切断して単
糸２デニ−ルである、図１に示す断面形状の複合短繊維
からなる原綿を得た。Example 1 As an amorphous polyamide, 25 mol% of terephthalic acid, 75 mol% of isophthalic acid, and 100 m of hexamethylenediamine.
It has a glass transition temperature of 125 in an absolutely dry state.
C., polyamide having a heat distortion temperature of 100.degree. C. is used, nylon 6 (Ube Industries, Ltd.) is used as the crystalline polyamide, and the mixing ratio is amorphous polyamide / crystalline polyamide = 20/80 (weight ratio ) Polymer (A) was obtained. As the polyester (B), polyethylene terephthalate having an intrinsic viscosity [η] = 0.63 (measured at 30 ° C. by using an equivalent weight mixed solution of phenol and tetrachloroethane) was used. Polymer (A) and polyester (B) are 5
Each polymer was weighed with a gear pump so that the ratio became 0/50 (weight ratio), and then supplied to a spinning pack, and a layered splitting type with both polymers by a 5-element static mixer (manufactured by Kenix) in the spinning pack. A polymer stream is formed and the die temperature is 285 ° C from a 1000-hole round hole nozzle.
And melt-spun at a spinning speed of 800 m / min to obtain an undrawn yarn of about 7 denier single yarn. The obtained undrawn yarn was drawn 3.8 times at a bath temperature of 75 ° C., then subjected to mechanical crimping, heat treated at 100 ° C., and cut into 38 mm to obtain a single yarn 2 denier. Raw cotton consisting of the composite short fibers having the cross-sectional shape shown in FIG. 1 was obtained.
【００３４】得られた原綿８０重量％と、ポリエチレン
／ポリエステル芯鞘型複合繊維（ソフィットＮ−７１０
タイプ、単糸２デニ−ル、長さ５１ｍｍ：（株）クラレ
製）２０重量％とを混綿し、目付量５０ｇ／ｍ↑２のウ
エッブを作製した。このウエッブに５０ｋｇ／ｃｍ↑２
の高圧水流をあて交絡処理を施した後、１４０℃で熱風
処理して不織布を製造した。複合短繊維は高圧水流によ
り分割していた。複合繊維製造時の工程性、不織布製造
時の工程性はいずれも良好であり、しかも得られた不織
布はそれを構成する複合繊維の細分化が進み、風合が柔
軟であり、天然繊維である綿からなる不織布に風合が近
似していた。そのうえ強度も強いものであった。結果を
表１に示す。80% by weight of the obtained raw cotton and a polyethylene / polyester core / sheath type composite fiber (SOFIT N-710)
20% by weight of a type, a single yarn 2 denier, and a length of 51 mm (manufactured by Kuraray Co., Ltd.) were mixed to prepare a web having a basis weight of 50 g / m ↑ 2. 50kg / cm ↑ 2 on this web
After applying a high-pressure water stream to entangle and subject it to hot air treatment at 140 ° C., a nonwoven fabric was manufactured. The composite short fibers were separated by the high pressure water stream. The processability during the production of the composite fiber and the processability during the production of the non-woven fabric are both good, and the resulting non-woven fabric is a natural fiber because the composite fibers constituting it are subdivided and the texture is soft. The texture was similar to that of a nonwoven fabric made of cotton. Moreover, the strength was also strong. The results are shown in Table 1.
【００３５】実施例２ ポリマ−（Ａ）とポリエステル（Ｂ）との複合比を前者
／後者＝３０／７０（重量比）にした以外は、実施例１
と同様にして複合短繊維からなる混綿を得、ついで不織
布を作製した。得られた不織布は風合が柔軟なうえ、強
度も兼ね備えたものであった。Example 2 Example 1 except that the composite ratio of the polymer (A) and the polyester (B) was the former / the latter = 30/70 (weight ratio).
In the same manner as described above, a mixed cotton consisting of composite short fibers was obtained, and then a nonwoven fabric was produced. The obtained non-woven fabric had a soft texture and also had strength.
【００３６】実施例３ ポリマ−（Ａ）を構成する非晶性ポリアミドと結晶性ポ
リアミドとの混合比を前者／後者＝１０／９０（重量
比）にした以外は、実施例１と同様にして複合短繊維か
らなる混綿を得、ついで不織布を作製した。得られた不
織布は風合が柔軟なうえ、強度も兼ね備えたものであっ
た。Example 3 The same procedure as in Example 1 was carried out except that the mixing ratio of the amorphous polyamide constituting the polymer (A) and the crystalline polyamide was the former / the latter = 10/90 (weight ratio). A mixed cotton consisting of composite short fibers was obtained, and then a non-woven fabric was produced. The obtained non-woven fabric had a soft texture and also had strength.
【００３７】実施例４〜５ ポリマ−（Ａ）を構成する非晶性ポリアミドと結晶性ポ
リアミドとの混合比（重量比）を前者／後者＝５／９５
（実施例４）、１０／９０（実施例５）とし、ポリエス
テル（Ｂ）として５−ナトリウムスルホイソフタル酸
２．５モル％共重合したポリエチレンテレフタレ−ト
（極限粘度［η］＝０．５５）を用いた以外は、実施例
１と同様にして複合短繊維からなる混綿を得、ついで不
織布を作製した。得られた不織布はいずれも風合が良好
で強度も有していた。Examples 4 to 5 The mixing ratio (weight ratio) of the amorphous polyamide and the crystalline polyamide constituting the polymer (A) was the former / the latter = 5/95.
(Example 4) Polyethylene terephthalate copolymerized with 10/90 (Example 5) and 2.5 mol% of 5-sodium sulfoisophthalic acid as polyester (B) (intrinsic viscosity [η] = 0.55) Was used in the same manner as in Example 1 to obtain a mixed cotton composed of composite short fibers, and then a non-woven fabric was prepared. All of the obtained non-woven fabrics had good texture and strength.
【００３８】比較例１ ポリマ−（Ａ）として、結晶性ポリアミドであるナイロ
ン６のみを用いた以外は実施例１と同様にして複合短繊
維からなる混綿を得、ついで不織布を作製した。不織布
作製時、カ−ドで綿がシリンダ−に巻き付き、カ−ディ
ング性が非常に不良であった。また、得られた不織布は
ネップが多発しており、製品としての価値のないもので
あった。Comparative Example 1 A blended cotton consisting of composite short fibers was obtained in the same manner as in Example 1 except that only nylon 6 which was a crystalline polyamide was used as the polymer (A), and then a nonwoven fabric was prepared. During the production of the nonwoven fabric, cotton was wrapped around the cylinder with a card, and the carding property was very poor. In addition, the obtained non-woven fabric had many neps, and was not valuable as a product.
【００３９】比較例２ ポリエステル（Ｂ）として５−ナトリウムスルホイソフ
タル酸が５モル％共重合されたポリエチレンテレフタレ
−ト（極限粘度［η］＝０．４５）を用いた以外は比較
例１と同様にして複合短繊維からなる混綿を得、ついで
不織布を作製した。カ−ディング性等の工程性は良好で
あったが、高圧流体処理においてポリマ−（Ａ）とポリ
エステル（Ｂ）とがほとんど分割せず、柔軟な風合を有
する不織布は得られなかった。Comparative Example 2 Comparative Example 1 except that polyethylene terephthalate (intrinsic viscosity [η] = 0.45) in which 5 mol% of 5-sodium sulfoisophthalic acid was copolymerized was used as the polyester (B). In the same manner, a mixed cotton composed of composite short fibers was obtained, and then a non-woven fabric was produced. Although the processability such as the carding property was good, the polymer (A) and the polyester (B) were hardly separated in the high-pressure fluid treatment, and a nonwoven fabric having a soft texture could not be obtained.
【００４０】比較例３〜４ ポリマ−（Ａ）とポリエステル（Ｂ）との複合比（重量
比）を前者／後者＝９５／５（比較例３）、５／９５
（比較例４）とした以外は実施例１と同様にして複合短
繊維からなる混綿を作製しようとしたが、いずれも紡糸
時に毛羽、断糸が頻発し、満足な混綿を作製することが
できなかった。Comparative Examples 3 to 4 The composite ratio (weight ratio) of the polymer (A) and the polyester (B) was set to the former / the latter = 95/5 (Comparative Example 3), 5/95.
An attempt was made to make a blended cotton composed of the composite short fibers in the same manner as in Example 1 except that (Comparative Example 4) was used. In both cases, fluff and yarn breakage frequently occurred during spinning, and a satisfactory blended cotton could be produced. There wasn't.
【００４１】比較例５ ポリマ−（Ａ）を構成する非晶性ポリアミドと結晶性ポ
リアミドとの混合比を前者／後者＝１／９９（重量比）
にした以外は実施例１と同様にして複合短繊維からなる
混綿を得、ついで不織布を作製した。カ−ディング性等
の工程性が不良であり、不織布にネップが多く見られ、
外観不良であった。Comparative Example 5 The mixing ratio of the amorphous polyamide constituting the polymer (A) and the crystalline polyamide was the former / the latter = 1/99 (weight ratio).
A mixed cotton composed of composite short fibers was obtained in the same manner as in Example 1 except that the above was used, and then a nonwoven fabric was produced. Processability such as carding is poor, and many neps are found in non-woven fabrics.
The appearance was poor.
【００４２】比較例６ ポリマ−（Ａ）を構成する非晶性ポリアミドと結晶性ポ
リアミドとの混合比を前者／後者＝５０／５０（重量
比）にした以外は実施例１と同様にして複合短繊維から
なる混綿を得、ついで不織布を作製した。紡糸後のトウ
において単繊維間に膠着が見られ、延伸性、カ−ディン
グ性が不良であった。Comparative Example 6 A composite was prepared in the same manner as in Example 1 except that the mixing ratio of the amorphous polyamide constituting the polymer (A) and the crystalline polyamide was changed to the former / the latter = 50/50 (weight ratio). A cotton blend consisting of short fibers was obtained, and then a non-woven fabric was produced. In the tow after spinning, sticking was observed between the single fibers, and drawability and carding property were poor.
【００４３】[0043]
【表１】 [Table 1]
【００４４】[0044]
【発明の効果】本発明の複合短繊維は、繊維化工程性が
良好であり、さらに該複合短繊維を含む不織布はその製
造時の工程性、とくにカ−ド通過性が良好であり、複合
短繊維が細分化されているため、柔軟な風合を有し、し
かも高い強度をも有する。INDUSTRIAL APPLICABILITY The composite staple fiber of the present invention has a good fiberizing processability, and the nonwoven fabric containing the composite staple fiber has a good processability at the time of its production, especially a card passage property. Since the short fibers are subdivided, it has a soft texture and high strength.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の複合短繊維の繊維断面を示す模式図で
ある。FIG. 1 is a schematic view showing a fiber cross section of a composite staple fiber of the present invention.
【図２】本発明の複合短繊維の繊維断面を示す他の模式
図である。FIG. 2 is another schematic view showing a fiber cross section of the composite staple fiber of the present invention.
【図３】本発明に使用する紡糸装置の口金部断面を示す
図である。FIG. 3 is a view showing a cross section of a spinneret portion of a spinning device used in the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宗佐 和彦 岡山県倉敷市玉島乙島7471番地 株式会社 クラレ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhiko Sousa 7471 Tamashima Otoshima, Kurashiki City, Okayama Prefecture Kuraray Co., Ltd.
Claims (2)
ミンからなり、熱変形温度が８０℃以上である非晶性ポ
リアミド２〜４０重量％および結晶性熱可塑性ポリアミ
ド６０〜９８重量％からなるポリマ−（Ａ）、ならびに
熱可塑性ポリエステル（Ｂ）とから構成された複合短繊
維であって、ポリマ−（Ａ）とポリエステル（Ｂ）の重
量複合比率が１５：８５〜８５：１５の範囲であり、し
かもポリマ−（Ａ）とポリエステル（Ｂ）との複合形状
が、各単繊維の長さ方向で実質的に同一形状でありなが
ら、横断面形状においては異なることを特徴とする複合
短繊維。1. An amorphous polyamide 2 to 40% by weight and a crystalline thermoplastic polyamide 60 to 98% by weight which are substantially composed of an aromatic dicarboxylic acid and an aliphatic diamine and have a heat distortion temperature of 80 ° C. or higher. A composite short fiber composed of a polymer (A) and a thermoplastic polyester (B), wherein the weight composite ratio of the polymer (A) and the polyester (B) is in the range of 15:85 to 85:15. In addition, the composite short fiber is characterized in that the composite shape of the polymer (A) and the polyester (B) is substantially the same shape in the length direction of each single fiber, but different in the cross-sectional shape. .
上含む不織布であって、該不織布を構成する繊維が三次
元的に絡合しており、縦方向の裂断長が３ｋｍ以上であ
る不織布。2. A non-woven fabric containing 10% by weight or more of the composite short fiber according to claim 1, wherein the fibers constituting the non-woven fabric are three-dimensionally entangled, and the breaking length in the longitudinal direction is 3 km or more. Is a non-woven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12932693A JP3235908B2 (en) | 1993-05-31 | 1993-05-31 | Composite fibers and non-woven fabrics made therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12932693A JP3235908B2 (en) | 1993-05-31 | 1993-05-31 | Composite fibers and non-woven fabrics made therefrom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06341018A true JPH06341018A (en) | 1994-12-13 |
| JP3235908B2 JP3235908B2 (en) | 2001-12-04 |
Family
ID=15006829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12932693A Expired - Fee Related JP3235908B2 (en) | 1993-05-31 | 1993-05-31 | Composite fibers and non-woven fabrics made therefrom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3235908B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218227A (en) * | 1995-02-13 | 1996-08-27 | Kuraray Co Ltd | Splittable type conjugated fiber |
| KR100729957B1 (en) * | 2006-03-23 | 2007-06-19 | 한국바이린주식회사 | Wallpaper for automobile and manufacturing method |
| KR100988976B1 (en) * | 2005-09-22 | 2010-10-20 | 주식회사 효성 | Polyester/Polyamide Splittable Conjugate Fiber and Manufacturing Method thereof |
| CN103789928A (en) * | 2014-01-28 | 2014-05-14 | 嘉兴学院 | Crimping fiber elastic non-woven fabric and manufacturing method thereof |
| WO2017221713A1 (en) * | 2016-06-22 | 2017-12-28 | 東レ株式会社 | High-temperature-shrinkable polyamide composite fiber, textured yarn, and textile partially using such polyamide composite fiber and textured yarn |
-
1993
- 1993-05-31 JP JP12932693A patent/JP3235908B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218227A (en) * | 1995-02-13 | 1996-08-27 | Kuraray Co Ltd | Splittable type conjugated fiber |
| KR100988976B1 (en) * | 2005-09-22 | 2010-10-20 | 주식회사 효성 | Polyester/Polyamide Splittable Conjugate Fiber and Manufacturing Method thereof |
| KR100729957B1 (en) * | 2006-03-23 | 2007-06-19 | 한국바이린주식회사 | Wallpaper for automobile and manufacturing method |
| CN103789928A (en) * | 2014-01-28 | 2014-05-14 | 嘉兴学院 | Crimping fiber elastic non-woven fabric and manufacturing method thereof |
| WO2017221713A1 (en) * | 2016-06-22 | 2017-12-28 | 東レ株式会社 | High-temperature-shrinkable polyamide composite fiber, textured yarn, and textile partially using such polyamide composite fiber and textured yarn |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3235908B2 (en) | 2001-12-04 |
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