JPH06136665A - Method for splitting conjugate fiber - Google Patents
Method for splitting conjugate fiberInfo
- Publication number
- JPH06136665A JPH06136665A JP28447492A JP28447492A JPH06136665A JP H06136665 A JPH06136665 A JP H06136665A JP 28447492 A JP28447492 A JP 28447492A JP 28447492 A JP28447492 A JP 28447492A JP H06136665 A JPH06136665 A JP H06136665A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- inorganic alkaline
- conjugate fiber
- fiber
- water
- 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.)
- Withdrawn
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 20
- 239000002904 solvent Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 21
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 18
- 229920000728 polyester Polymers 0.000 abstract description 13
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 7
- 229920001410 Microfiber Polymers 0.000 abstract description 6
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract description 6
- 230000007062 hydrolysis Effects 0.000 abstract description 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000004753 textile Substances 0.000 abstract description 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- 239000012670 alkaline solution Substances 0.000 description 11
- 238000009987 spinning Methods 0.000 description 8
- 239000002759 woven fabric Substances 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 7
- -1 polyethylene terephthalate Polymers 0.000 description 7
- 230000004580 weight loss Effects 0.000 description 7
- 239000004952 Polyamide Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 229920002647 polyamide Polymers 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- VIQSRHWJEKERKR-UHFFFAOYSA-L disodium;terephthalate Chemical compound [Na+].[Na+].[O-]C(=O)C1=CC=C(C([O-])=O)C=C1 VIQSRHWJEKERKR-UHFFFAOYSA-L 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- JRBPAEWTRLWTQC-UHFFFAOYSA-N dodecylamine Chemical compound CCCCCCCCCCCCN JRBPAEWTRLWTQC-UHFFFAOYSA-N 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Multicomponent Fibers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、極細糸または極細糸を
使用した織物、編物や不織布などの繊維製品を製造する
ための複合繊維の分割方法のうち、無機アルカリ化合物
を使用する分割方法の改良に関する。FIELD OF THE INVENTION The present invention relates to a method of dividing a composite fiber for producing a fiber product such as a woven fabric, a knitted fabric or a non-woven fabric using an ultrafine yarn or an ultrafine yarn, which is a method of dividing using an inorganic alkali compound. Regarding improvement.
【０００２】[0002]
【従来の技術】０．５デニール以下の極細糸が、複合繊
維を分割する方法によって容易に製造され、極細糸を使
用した繊維製品も多種多様のものが市場に提供されてい
る。極細糸を高次加工して繊維製品にすることもある
が、このような極細糸はけん縮加工や不織布の製造など
の高次加工が非常に難しいので、複合繊維のまま高次加
工を施した後、分割して極細糸のストランド状にする方
法が一般的に採用されている。ところで、複合繊維を分
割する主な方法の一つは、高次加工前、高次加工の適当
な段階または終了後に、複合繊維を構成する成分のうち
の所定の成分を、薬剤で分解除去するか、溶剤で溶出除
去するかして極細糸にする方法である。今一つの主な方
法は、高次加工前後もしくは途中でウオーターパンチな
どの物理的な衝撃も与えて分割するものである。これら
の方法のうち、薬剤として無機アルカリ水溶液を使用す
る方法が、特公昭４４−１８３６９号公報、特公昭４８
−３３４１５号公報、特開昭５９−１９２７２２号公
報、特開昭６１−１６７０７９号公報、特開昭６２−２
２３３７１号公報、特公昭６３−１１４６６号公報およ
び特開平２−２７７８８０号公報に記載されている。2. Description of the Related Art Ultrafine yarns of 0.5 denier or less are easily manufactured by a method of dividing a composite fiber, and various fiber products using the ultrafine yarns are provided on the market. Although ultrafine yarns may be subjected to higher-order processing to make fiber products, such higher-fine yarns are extremely difficult to perform higher-order processing such as crimping and manufacturing of non-woven fabrics. After that, a method of dividing it into strands of extra fine yarn is generally adopted. By the way, one of the main methods of dividing the composite fiber is to decompose and remove a predetermined component of the components constituting the composite fiber with a chemical agent before the high-order processing, or at an appropriate stage or after the high-order processing. Alternatively, it is a method of making ultrafine yarn by elution and removal with a solvent. Another main method is to divide by giving a physical impact such as a water punch before or after the high-order processing or during the cutting. Among these methods, a method of using an inorganic alkaline aqueous solution as a drug is disclosed in JP-B-44-18369 and JP-B-48.
-33415, JP-A-59-192722, JP-A-61-167079, JP-A-62-2.
No. 23371, Japanese Patent Publication No. 63-11466 and Japanese Patent Laid-Open No. 2-277880.
【０００３】[0003]
【発明が解決しようとする課題】薬剤として無機アルカ
リ水溶液を使用する方法は、分解成分として易分解性の
ポリエステルもしくはその共重体を使ったものが多い。
ポリエステルは無機アルカリによって、たとえば次の化
学反応式で示されるように分解除去される。In many cases, an inorganic alkaline aqueous solution is used as a drug, in which easily decomposable polyester or its copolymer is used as a decomposing component.
The polyester is decomposed and removed by the inorganic alkali, for example, as shown in the following chemical reaction formula.
【０００４】[0004]
【化１】 最近、極細繊維製品の品質に対する要求が益々高度化
し、従来の方法ではこの要求に応え、さらに細く均一な
製品を製造することが次第に困難になってきた。本発明
の目的は、最近の極細繊維製品の品質動向に対応できる
方法を提供することにある。[Chemical 1] Recently, the demand for the quality of ultrafine fiber products has become more and more sophisticated, and it has become increasingly difficult to meet the demand by the conventional methods and to manufacture finer and more uniform products. An object of the present invention is to provide a method capable of coping with recent quality trends of ultrafine fiber products.
【０００５】[0005]
【課題を解決するための手段】本発明は、複合繊維を有
機化合物を溶媒とする無機アルカリ化合物溶液で処理し
て分割する、複合繊維の分割方法を提供する。とくに、
前記の溶媒の沸点が１００℃以上であることが好まし
い。さらに、前記の溶媒に５０重量％を超えない量の水
を添加するとよい。The present invention provides a method for dividing a composite fiber, which comprises treating the composite fiber with an inorganic alkaline compound solution containing an organic compound as a solvent to divide the composite fiber. Especially,
The boiling point of the solvent is preferably 100 ° C. or higher. Further, it is advisable to add water in an amount not exceeding 50% by weight to the above solvent.
【０００６】[0006]
【実施態様例と作用】本発明の複合繊維の分割方法につ
いて詳しく説明する。本発明者は、前記の目的を達成す
ることを研究中、複合繊維中のポリエステル成分の加水
分解などにもっぱら使用されていた無機アルカリ水溶液
に代えて、有機化合物を溶媒（以下、たんに溶媒とい
う）とする無機アルカリ化合物溶液（以下、たんに無機
アルカリ溶液という）の使用を試みた結果、従来よりも
分解を効果的に繊細にかつ均一に実施できることを見出
だし、本発明を完成した。本発明に使用できる溶媒とし
ては、無機アルカリ化合物を溶解して安定であり、水と
親和性のある室温で液体のアルコール類、アルデヒド類
などをあげることができる。たとえば、ｎ−ブチルアル
コール、グリセリン、エチレングリコール、ポリエチレ
ングリコール、ヂメチルホルムアルデヒドなどを好まし
く使用できる。溶媒は、たとえば、ポリエステルが無機
アルカリによって分解されて生成するエチレングリコー
ルやテレフタール酸ソーダと親和力が強く、分解生成物
を容易に系外に移動させるものが好適である。さらに、
沸点が１００℃以上の溶剤を使用することが好ましい。
処理操作の安全と、処理温度を高めることが可能になっ
て効率よく複合繊維を分割できるからである。Embodiments and Actions The method for splitting the conjugate fiber of the present invention will be described in detail. The present inventor has been researching to achieve the above-mentioned object, in place of the inorganic alkaline aqueous solution which has been used exclusively for the hydrolysis of the polyester component in the composite fiber, the organic compound is a solvent (hereinafter, simply referred to as a solvent). As a result of attempting to use an inorganic alkaline compound solution (hereinafter, simply referred to as “inorganic alkaline solution”), it was found that decomposition can be carried out more effectively and delicately and uniformly than before, and the present invention has been completed. Examples of the solvent that can be used in the present invention include alcohols and aldehydes which are stable at the dissolution of an inorganic alkaline compound and which are liquid at room temperature and have affinity with water. For example, n-butyl alcohol, glycerin, ethylene glycol, polyethylene glycol, dimethylformaldehyde and the like can be preferably used. As the solvent, for example, a solvent having a strong affinity with ethylene glycol or sodium terephthalate produced by decomposing the polyester with an inorganic alkali, and capable of easily moving the decomposition product out of the system is suitable. further,
It is preferable to use a solvent having a boiling point of 100 ° C. or higher.
This is because the processing operation is safe and the processing temperature can be increased, and the composite fiber can be efficiently divided.
【０００７】本発明に使用する無機アルカリとしては、
経済的で蒸発したりすることのない水酸化ナトリウム、
水酸化カリウムなどを使用するとよい。さらに、これら
の溶媒に必要な薬剤などを添加することができる。たと
えば、５０％を超えない少量の水を加えると、無機アル
カリの溶解性が著しく向上して分解を促進することがで
きる。また、加水分解を促進するために活性剤例えばラ
ウリルアミン、エチレンオキサイド付加物、ロート油剤
などを添加しても、加水分解をより効果的に促進するこ
とが可能である。As the inorganic alkali used in the present invention,
Economical, non-evaporating sodium hydroxide,
It is recommended to use potassium hydroxide or the like. Furthermore, necessary agents and the like can be added to these solvents. For example, when a small amount of water not exceeding 50% is added, the solubility of the inorganic alkali is remarkably improved and the decomposition can be promoted. Further, even if an activator such as laurylamine, an ethylene oxide adduct, a funnel oil agent, etc. is added to accelerate the hydrolysis, the hydrolysis can be promoted more effectively.
【０００８】本発明において複合繊維または複合繊維製
品を無機アルカリ溶液で処理し極細繊維にする方法とし
ては、従来無機アルカリ水溶液を使用して実施した公知
の方法、たとえば、複合繊維を無機アルカリ溶液に浸漬
する方法、パッドスチーマーを使用して加熱する方法、
沸点の高い溶媒を使用し、溶液の蒸発を押さえ、乾燥機
を効果的に利用する乾式法などを利用することができ
る。以下、実施例をあげて本発明を具体的に説明する。In the present invention, as a method for treating the composite fiber or the composite fiber product with an inorganic alkaline solution to form ultrafine fibers, a known method which has been conventionally carried out using an inorganic alkaline aqueous solution, for example, the composite fiber is converted into an inorganic alkaline solution. Dipping method, heating using a pad steamer,
It is possible to use a dry method in which a solvent having a high boiling point is used, evaporation of the solution is suppressed, and a dryer is effectively used. Hereinafter, the present invention will be specifically described with reference to examples.
【０００９】[0009]
実施例１ 複数の高分子成分を複合流として紡出し、さらにこの複
合流を集めて第２の紡出を行う公知の複合紡糸機（特公
昭４４−１８３６９号公報に記載の紡糸機に類似する）
を用い、海部分のポリエチレンテレフタレートが約３０
％、島部分のポリアミドが約７０％の海島形複合繊維を
製造した。この複合繊維は４デニールで、３６本のポリ
アミド繊維が繊維軸方向に連続したものであった。これ
をトウ状態で１０〜１５山／インチのクリンプを付与し
た後、繊維長さ５１ｍｍにカットしてステープルにし
た。このステープルをカードにかけてウェップを形成さ
せ、さらにこのウエッブを積層し、ニードルパンチでパ
ンチングし、見掛密度が０．２５ｇ／ｃｍ3 、目付が４
５０ｇ／ｍ2 のフェルトに加工した。Example 1 A known composite spinning machine (similar to the spinning machine described in Japanese Patent Publication No. 44-18369) that spins a plurality of polymer components into a composite stream, and collects the composite streams to perform a second spinning. )
And polyethylene terephthalate in the sea area is about 30
%, And the polyamide in the island portion was about 70% to produce a sea-island composite fiber. This composite fiber was 4 denier, and 36 polyamide fibers were continuous in the fiber axis direction. A crimp of 10 to 15 peaks / inch was applied in a toe state, and the staple was cut into a fiber length of 51 mm. This staple is applied to a card to form a web, and this web is further laminated and punched with a needle punch to give an apparent density of 0.25 g / cm 3 and a basis weight of 4
The felt was processed into 50 g / m 2 .
【００１０】このフエルトをポリエチレングリコール＃
４００（東邦千葉化学（株）製）を溶媒とする３重量％
の水酸化ナトリウム溶液に浸漬し、マングルでニップし
て絞り率１００％にした。さらに、１２０℃の乾燥機で
３分間処理した後、水中を通して洗滌し、酸で中和して
水洗、乾燥した。フエルトの減量率は約３０重量％でポ
リエチレンテレフタレートは完全に分解除去され、約
０．０８デニールの極細ポリアミド繊維が３６本、バン
ドル状に絡合した不織布を得た。This felt was changed to polyethylene glycol #
3% by weight using 400 (Toho Chiba Chemical Co., Ltd.) as a solvent
It was dipped in the sodium hydroxide solution of and was nipped with a mangle to obtain a squeezing ratio of 100%. Further, after being treated with a drier at 120 ° C. for 3 minutes, it was washed by passing it through water, neutralized with an acid, washed with water and dried. The felt weight loss rate was about 30% by weight, polyethylene terephthalate was completely decomposed and removed, and a nonwoven fabric was obtained in which 36 ultrafine polyamide fibers of about 0.08 denier were entangled in a bundle.
【００１１】実施例２ グリセリン９５容量部に水５容量部を添加した溶媒に、
水酸化ナトリウムを加えて３重量％無機アルカリ溶液を
調合した。この無機アルカリ溶液に、実施例１で加工し
たのと同じフェルトをを浸漬して引上げ、ニップして絞
り率１００％にした。このフェルトを１３０℃の乾燥機
を３分間通してから水中に投入して水洗し、さらに酸で
中和して水洗し、乾燥した。減量率は約３０重量％でポ
リエステルは完全に分解除去され、約０．０８デニール
の極細ポリアミド繊維が３６本、バンドル状に絡合した
不織布を得た。Example 2 In a solvent prepared by adding 5 parts by volume of water to 95 parts by volume of glycerin,
Sodium hydroxide was added to prepare a 3 wt% inorganic alkaline solution. The same felt as that processed in Example 1 was immersed in this inorganic alkaline solution, pulled up, and nipped to obtain a squeezing ratio of 100%. The felt was passed through a dryer at 130 ° C. for 3 minutes, then put into water, washed with water, further neutralized with an acid, washed with water, and dried. The weight loss rate was about 30% by weight, the polyester was completely decomposed and removed, and a nonwoven fabric was obtained in which 36 ultrafine polyamide fibers of about 0.08 denier were entangled in a bundle.
【００１２】比較例１〜２ 水酸化ナトリウムの溶媒に水を使用し、３重量％の無機
アルカリ水溶液を調合して使用した以外は、実施例１お
よび実施例２と全く同様に無機アルカリ水溶液にフェル
トを浸漬して処理し、それぞれ、比較例１および比較例
２を実施した。しかし、比較例１においては、フェルト
の減量率は約１５重量％にしか達せず、未分解のポリエ
チレンテレフタレートが残った。このため、ポリアミド
繊維は十分に分割されなかった。また、比較例２におい
ても、フェルトの減量率は約８重量％であって、ポリエ
チレンテレフタレートの過水分解が進まず、分割されて
いないポリアミド繊維の部分が多数残存していた。Comparative Examples 1-2 An inorganic alkaline aqueous solution was prepared in the same manner as in Examples 1 and 2 except that water was used as a solvent for sodium hydroxide and a 3 wt% inorganic alkaline aqueous solution was prepared. The felt was dipped and treated to carry out Comparative Example 1 and Comparative Example 2, respectively. However, in Comparative Example 1, the felt weight loss rate reached only about 15% by weight, and undecomposed polyethylene terephthalate remained. Therefore, the polyamide fiber was not sufficiently divided. Also in Comparative Example 2, the felt weight loss rate was about 8% by weight, and the decomposition of polyethylene terephthalate into water did not proceed, and a large number of undivided polyamide fiber portions remained.
【００１３】実施例３ 実施例１で使用したのと同じ複合紡糸機を使用して、ポ
リエステル複合繊維を製造した。無機アルカリ溶液で分
解されない成分（Ａ成分）に固有粘度が０．６５のポリ
エチレンテレフタレートを、分解成分（Ｂ成分）に固有
粘度が０．５１のエチレン５−ソジュームスルホイソフ
タレート（６モル％）／エチレンテレフタレート（９４
モル％）の共重合体を用い、Ａ成分を７０部、Ｂ成分を
３０部の比率で３．４デニールの複合繊維を紡糸した。
この複合繊維は、２４本のＡ成分のポリエステル繊維が
繊維軸方向に連続したものであった。この複合繊維をを
トウ状態で１０〜１５山／インチのクリンプを付与した
後、繊維長さ５１ｍｍにカットしてステープルにした。
このステープルをカード、クロスラッパーおよびニード
ルパンチを用いて加工し、見掛密度が０．２６ｇ／ｃｍ
3 、目付が５００ｇ／ｍ2 のフェルトを得た。Example 3 Polyester conjugate fibers were prepared using the same conjugate spinning machine used in Example 1. Polyethylene terephthalate having an intrinsic viscosity of 0.65 is added to the component that is not decomposed by the inorganic alkaline solution (component A), and ethylene 5-sodium sulfoisophthalate (6 mol%) having an intrinsic viscosity of 0.51 is used as the decomposition component (component B). / Ethylene terephthalate (94
% Of component A and 30 parts of component B were used to spin 3.4 denier conjugate fibers.
In this composite fiber, 24 polyester fibers of component A were continuous in the fiber axis direction. The composite fiber was crimped at 10 to 15 ridges / inch in a tow state, and then cut into staples having a fiber length of 51 mm.
This staple is processed using a card, a cross wrapper and a needle punch, and the apparent density is 0.26 g / cm.
3 , a felt having a basis weight of 500 g / m 2 was obtained.
【００１４】このフエルトをエチレングリコールを溶媒
とし、３重量％の水酸化ナトリウムを含む無機アルカリ
溶液に浸漬した後、マングルを通し、絞液率８０％でニ
ップしバッチアップしてロール状に巻き上げた。さら
に、スチーマーに入れて約５分間、常圧下で加熱処理し
てから、水中を通して洗滌し、酸で中和して水洗、乾燥
した。この間、バッチアップしたロールは、水中を通す
まで無機アルカリ溶液が不均一にならないように一定の
回転速度でゆるく回転し続けた。This felt was dipped in an inorganic alkaline solution containing 3% by weight of sodium hydroxide using ethylene glycol as a solvent, then passed through a mangle, nipped at a squeezing rate of 80%, batched up and rolled up into a roll. . Further, the mixture was placed in a steamer and heat-treated under normal pressure for about 5 minutes, then washed by passing it through water, neutralized with an acid, washed with water and dried. During this period, the batch-up roll continued to rotate gently at a constant rotation speed so that the inorganic alkaline solution did not become nonuniform until it was passed through water.
【００１５】このようにして加工されたフエルトの減量
率は約３２重量％で、Ａ成分のポリエチレンフタレート
も多少分解されたが、Ｂ成分の共重合体は完全に分解除
去され、約０．１デニールの極細ポリエステル繊維が２
４本、バンドル状に絡合した、柔軟でソフトタッチの不
織布を得た。The felt thus processed had a weight loss rate of about 32% by weight, and the polyethylene phthalate of the component A was also decomposed to some extent, but the copolymer of the component B was completely decomposed and removed to about 0.1%. 2 fine denier polyester fibers
Four soft and soft-touch nonwoven fabrics entangled in a bundle were obtained.
【００１６】実施例４ 実施例３に使用したのと同じ成分を使用し、前記のＡ成
分を８０部、Ｂ成分が２０部で、Ａ成分がＢ成分で６個
に分割された複合繊維を紡糸した。紡糸には、内部オリ
フィスを有する内部口金板と、紡糸オリフィスを有する
口金板とが積層されて組立てられている公知の複合紡糸
機（たとえば、特公昭４８−２８００５号公報に記載の
紡糸機に類似する）を用いた。この複合繊維は、単糸が
３デニール、フラメント数が４０でトータルデニールが
１２０デニールであった。この複合繊維を縦糸４０本／
ｃｍ、横糸２５本／ｃｍの平織のフィラメント織布に加
工した。この織布を、エチレングリコール９５容量部に
水５容量部を添加した溶媒に、水酸化ナトリウムを加え
た３重量％の無機アルカリ溶液を調整した後、リラクサ
ーに入れ、これに前記のフィラメント織布を入れ、１０
０℃で５分間処理した。さらに、水中を通して洗滌し、
酸で中和してから水洗、乾燥した。Example 4 Using the same components as those used in Example 3, 80 parts of the above-mentioned A component, 20 parts of the B component and 6 parts of the A component were divided into the B component. Spun For spinning, a known composite spinning machine in which an internal spinneret having an internal orifice and a spinneret having a spinning orifice are stacked and assembled (for example, similar to the spinning machine described in Japanese Patent Publication No. 48-28005). Used). In this composite fiber, the single yarn was 3 denier, the number of fragment was 40, and the total denier was 120 denier. 40 fibers of this composite fiber
cm, a plain weave filament woven fabric with 25 wefts / cm. This woven fabric was adjusted to a 3% by weight inorganic alkaline solution containing sodium hydroxide in a solvent prepared by adding 5 parts by volume of water to 95 parts by volume of ethylene glycol, and then put into a relaxer, whereupon the filament woven fabric described above was added. Put 10
It was treated at 0 ° C. for 5 minutes. In addition, wash through water,
It was neutralized with an acid, washed with water and dried.
【００１７】このようにして加工された織布の減量率は
約２１重量％で、Ａ成分のポリエチレンフタレートも多
少分解されたが、Ｂ成分の共重合体は完全に分解除去さ
れ、約０．４デニールの極細ポリエステル繊維が６本、
バンドル状に絡合した非常に柔らかい織物を得た。The weight loss of the woven fabric processed in this manner was about 21% by weight, and the polyethylene phthalate as the component A was also decomposed to some extent, but the copolymer as the component B was completely decomposed and removed, resulting in about 0. 6 fine 4 denier polyester fibers,
A very soft woven fabric entangled in a bundle was obtained.
【００１８】比較例３ 溶媒に全量水を使用した以外は実施例４と全く同様の条
件でフィラメント織布を処理した。織布の減量率は約１
６重量％で、Ｂ成分に未分解部分が残り、Ａ成分のポリ
エステル繊維に未分割部分が多く残った。Comparative Example 3 A filament woven fabric was treated under exactly the same conditions as in Example 4 except that the solvent was totally water. Woven cloth weight loss rate is about 1
At 6% by weight, undecomposed portions remained in the B component, and many undivided portions remained in the polyester fiber of the A component.
【００１９】[0019]
【発明の効果】本発明の複合繊維の分割方法において
は、たとえば、ポリエステルが分解されて生成するエチ
レングリコールやテレフタール酸ソーダと親和力が強
く、分解生成物を容易に系外に移動させることができる
溶媒を無機アルカリの溶媒として利用することができ
る。したがって、繊維製品、トウなどを構成する複合繊
維をより効果的に繊細に、むらなく分割することができ
る。これらの溶媒の多くは、水よりも粘性が大きく、た
とえば、複合繊維の織物を無機アルカリ溶液中を通過さ
せ、ローラで絞って溶液を含ませるパディング法で処理
する場合、処理中の無機アルカリ溶液の移動が少なく、
斑になることが少なくない。また、沸点が１００℃以上
の溶剤を使用すれば、処理温度を高めることができるの
で分割操作を容易に、かつ効率的に実施することができ
る。従来のように無機アルカリ水溶液を用いると、粘度
が低いために分割液が移動し易く、斑を生じやすい。ま
た、水分が蒸発して水が不足し、加水分解を十分に進行
させることができない場合があり、むらを生じやすい。INDUSTRIAL APPLICABILITY In the method for splitting the conjugate fiber of the present invention, for example, it has a strong affinity with ethylene glycol or sodium terephthalate produced by decomposition of polyester, and the decomposition product can be easily moved out of the system. The solvent can be used as a solvent for the inorganic alkali. Therefore, it is possible to more effectively and delicately divide the composite fiber constituting the textile product, tow, or the like, evenly. Many of these solvents are more viscous than water, and for example, when a woven fabric of composite fibers is passed through an inorganic alkaline solution and squeezed with a roller to treat the solution with a padding method, the inorganic alkaline solution being treated is treated. Less movement,
It often causes spots. Further, if a solvent having a boiling point of 100 ° C. or higher is used, the treatment temperature can be raised, so that the dividing operation can be carried out easily and efficiently. When an inorganic alkaline aqueous solution is used as in the conventional case, the divided liquid is likely to move due to its low viscosity, and spots are likely to occur. In addition, water may be evaporated to run out of water, and hydrolysis may not be able to proceed sufficiently, so that unevenness is likely to occur.
Claims (3)
ルカリ化合物溶液で処理して分割する、複合繊維の分割
方法。1. A method for dividing a composite fiber, which comprises treating the composite fiber with an inorganic alkaline compound solution containing an organic compound as a solvent to divide the composite fiber.
とを特徴とする、請求項１に記載の複合繊維の分割方
法。2. The method for splitting a conjugate fiber according to claim 1, wherein the boiling point of the solvent is 100 ° C. or higher.
％を超えない量の水を添加することをを特徴とする、請
求項１または２に記載の複合繊維の分割方法。3. The method for splitting a conjugate fiber according to claim 1, wherein the solvent according to claim 1 or 2 is added with water in an amount not exceeding 50% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28447492A JPH06136665A (en) | 1992-10-22 | 1992-10-22 | Method for splitting conjugate fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28447492A JPH06136665A (en) | 1992-10-22 | 1992-10-22 | Method for splitting conjugate fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06136665A true JPH06136665A (en) | 1994-05-17 |
Family
ID=17678997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28447492A Withdrawn JPH06136665A (en) | 1992-10-22 | 1992-10-22 | Method for splitting conjugate fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06136665A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288675A (en) * | 2000-03-31 | 2001-10-19 | Teijin Ltd | Method for processing weight reduction of polyalkylene terephthalate fiber |
-
1992
- 1992-10-22 JP JP28447492A patent/JPH06136665A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001288675A (en) * | 2000-03-31 | 2001-10-19 | Teijin Ltd | Method for processing weight reduction of polyalkylene terephthalate fiber |
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