JP3510731B2 - Microporous hollow polyamide fiber and method for producing the same - Google Patents
Microporous hollow polyamide fiber and method for producing the sameInfo
- Publication number
- JP3510731B2 JP3510731B2 JP09081596A JP9081596A JP3510731B2 JP 3510731 B2 JP3510731 B2 JP 3510731B2 JP 09081596 A JP09081596 A JP 09081596A JP 9081596 A JP9081596 A JP 9081596A JP 3510731 B2 JP3510731 B2 JP 3510731B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- hollow
- alkali
- soluble polyester
- ratio
- 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.)
- Expired - Fee Related
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- Chemical Or Physical Treatment Of Fibers (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、繊維表面に微細孔
群を有し、吸放湿性に優れる中空ポリアミド繊維及びそ
の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow polyamide fiber having fine pore groups on the surface of the fiber and excellent in moisture absorption and desorption, and a method for producing the same.
【０００２】[0002]
【従来の技術】中空部から繊維表面へ貫通する微細孔群
を有する中空繊維については、多くの提案がなされてい
る。特開昭55-76106号公報には、溶出除去可能な物質を
配合した繊維形成性樹脂を中空繊維に紡糸し、その後溶
剤処理することによって得られた微細孔中空繊維が開示
されている。しかしながら、この繊維のポリマーの組み
合わせでは、細繊度の繊維や高中空率を有する繊維とは
ならないという問題があった。2. Description of the Related Art Many proposals have been made for hollow fibers having a group of fine holes penetrating from the hollow portion to the fiber surface. JP-A-55-76106 discloses a microporous hollow fiber obtained by spinning a fiber-forming resin containing a substance capable of being eluted and removed into a hollow fiber, and then subjecting the hollow fiber to a solvent treatment. However, there is a problem in that the combination of the polymers of the fibers does not result in fibers having a fineness and a fiber having a high hollow ratio.
【０００３】また、特開昭55-116811 号公報には、繊維
形成性重合体成分Ａと、成分Ａと親和性を有し溶解性を
同じくする合成重合体Ｂに、成分Ａと親和性を有し、溶
解性を異にする合成重合体Ｃを混合した成分とを放射状
に配した中空複合繊維を紡糸した後、重合体Ｃのみを溶
出して得られた微細孔中空繊維が開示されている。しか
しながら、この繊維は高い中空率を有するものとはなら
ず、また、得られる繊維は二成分の複合繊維であるた
め、界面剥離や染斑等の生じる繊維となるという問題が
あった。Further, in Japanese Patent Laid-Open No. 55-116811, a fiber-forming polymer component A and a synthetic polymer B having an affinity and a similar solubility to the component A have an affinity with the component A. Disclosed is a microporous hollow fiber obtained by spinning a hollow composite fiber radially arranging with a component mixed with a synthetic polymer C having different solubility, and eluting only the polymer C. There is. However, this fiber does not have a high hollow ratio, and since the obtained fiber is a bicomponent composite fiber, there is a problem that it becomes a fiber in which interfacial peeling, stain spots, etc. occur.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上述した問
題点を解決し、中空部から繊維表面へ連通する微細孔群
を有し、かつ高中空率である中空ポリアミド繊維を提供
することを技術的な課題とするものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems and provides a hollow polyamide fiber having a group of fine pores communicating from the hollow portion to the fiber surface and having a high hollow ratio. This is a technical issue.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記の課
題を解決するために鋭意検討の結果、本発明に到達し
た。すなわち、本発明の第一発明は、芯部と鞘部にアル
カリ易溶性ポリエステル (A) を含有する複合繊維をアル
カリ減量処理してアルカリ易溶性ポリエステル (A) を溶
出することにより、繊維表面に微細孔群、繊維内部に中
空部を生じさせた繊維であって、中空率が 30 ％以上であ
り、微細孔群の少なくとも一部は中空部から繊維表面へ
連通していることを特徴とする微細孔中空ポリアミド繊
維を要旨とするものである。そして、第二発明は、芯部
がアルカリ易溶性ポリエステル(A) 、鞘部がアルカリ易
溶性ポリエステル(A) と熱可塑性ポリアミド(B) の重量
比が５：95〜30：70の混合物からなる複合繊維を紡糸
し、その後、アルカリ減量処理してアルカリ易溶性ポリ
エステル(A) を溶出することを特徴とする第一発明の微
細孔中空ポリアミド繊維の製造方法を要旨とするもので
ある。The present inventors have arrived at the present invention as a result of extensive studies to solve the above problems. That is, the first aspect of the present invention is that the core and the sheath are
Alkali composite fiber containing easily soluble potassium (A)
Potassium weight reduction treatment to dissolve alkali-soluble polyester (A)
By putting it out, a group of micropores is formed on the fiber surface, and
A fiber that has voids and has a hollowness of 30 % or more.
Ri, at least a portion of the fine hole group is to micropores hollow polyamide fiber characterized in that communicating the hollow portion to the fiber surface and gist. And the second invention is a mixture of the alkali-soluble polyester (A) in the core and the alkali-soluble polyester (A) and the thermoplastic polyamide (B) in the sheath in a weight ratio of 5:95 to 30:70. A gist of the method for producing a microporous hollow polyamide fiber of the first invention is characterized in that the conjugate fiber is spun, and then alkali-reducing treatment is performed to elute the alkali-soluble polyester (A).
【０００６】[0006]
【発明の実施の形態】以下、本発明について詳細に説明
する。本発明の中空ポリアミド繊維は、中空率が30％以
上の繊維であって、繊維表面に多数の微細孔群を有して
いるものである。そして、微細孔群の少なくとも一部
は、中空部から繊維表面へ連通している。中空率が30％
未満であると、肉厚の中空繊維となるため、中空部から
繊維表面へ連通する微細孔群が形成されなくなるので、
吸放湿性能に優れた繊維とならない。中空率の上限は特
に限定されるものではないが、中空率が高くなり過ぎる
と肉厚の薄い繊維となり、中空部の潰れが生じやすくな
るため40％程度とすることが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The hollow polyamide fiber of the present invention is a fiber having a hollow ratio of 30% or more, and has a large number of fine pore groups on the fiber surface. Then, at least a part of the group of fine holes communicates with the fiber surface from the hollow portion. Hollow rate is 30%
If it is less than, since it becomes a thick hollow fiber, the group of fine pores communicating from the hollow portion to the fiber surface is not formed,
Does not become a fiber with excellent moisture absorption and desorption performance. The upper limit of the hollow rate is not particularly limited, but if the hollow rate becomes too high, the fiber becomes thin and the hollow portion is likely to be crushed, so that the hollow rate is preferably about 40%.
【０００７】また、本発明の中空ポリアミド繊維におい
て、微細孔部と中空部の容積比率は特に限定されるもの
ではないが、微細孔部が５〜50％、中空部が50〜95％と
することが好ましい。微細孔部の容積比率が５％未満で
あると、吸放湿性能に劣った繊維となりやすく、微細孔
部の容積比率が50％を超えると、繊維の強度が低下し、
繊維表面のフィブリル化及び中空部の潰れが生じやすく
なるため好ましくない。In the hollow polyamide fiber of the present invention, the volume ratio of the fine pores to the hollow portions is not particularly limited, but the fine pores are 5 to 50% and the hollow portions are 50 to 95%. It is preferable. If the volume ratio of the fine pores is less than 5%, the fiber tends to be inferior in moisture absorption / release performance, and if the volume ratio of the fine pores exceeds 50%, the strength of the fiber decreases,
Fibrillation of the fiber surface and collapse of the hollow portion are likely to occur, which is not preferable.
【０００８】そして、上記のような形状の中空ポリアミ
ド繊維を製造するには、芯部がアルカリ易溶性ポリエス
テル(A) 、鞘部２がアルカリ易溶性ポリエステル(A) と
熱可塑性ポリアミド(B) の重量比が５：95〜30：70の混
合物からなる複合繊維を紡糸し、その後、アルカリ減量
処理してアルカリ易溶性ポリエステル(A) を溶出させ
る。アルカリ減量処理は、糸条の状態で行うこともでき
るが、通常は、織物又は編物にした後に行う。In order to produce the hollow polyamide fiber having the above-mentioned shape, the core part is made of the alkali easily soluble polyester (A), and the sheath part 2 is made of the alkali easily soluble polyester (A) and the thermoplastic polyamide (B). A composite fiber composed of a mixture having a weight ratio of 5:95 to 30:70 is spun, and then alkali-reducing treatment is performed to elute the alkali-soluble polyester (A). The alkali weight-reducing treatment can be performed in a yarn state, but is usually performed after forming a woven or knitted fabric.
【０００９】アルカリ易溶性ポリエステル成分(A) とし
ては、例えば、エチレンテレフタレートを主たる繰り返
し単位とし、イソフタル酸、ポリアルキレングリコー
ル、スルホイソフタル酸アルカリ金属塩等を共重合させ
た共重合ポリエステルを挙げることができる。Examples of the alkali-soluble polyester component (A) include, for example, a copolymerized polyester obtained by copolymerizing ethylene terephthalate as a main repeating unit with isophthalic acid, polyalkylene glycol, sulfoisophthalic acid alkali metal salt and the like. it can.
【００１０】熱可塑性ポリアミド成分(B) としては、ナ
イロン４、ナイロン６、ナイロン６６、ナイロン４６、
ナイロン１１、ナイロン１２、ナイロンＭＸＤ６（ポリ
メタキシリレンアジパミド) 、ポリパラキシリレンデカ
ナミド、ポリビスシクロヘキシルメタンドデカナミド等
のホモポリマー及びこれらを主体とする共重合体もしく
は混合物が好ましく用いられる。As the thermoplastic polyamide component (B), nylon 4, nylon 6, nylon 66, nylon 46,
Homopolymers such as nylon 11, nylon 12, nylon MXD6 (polymeta-xylylene adipamide), polyparaxylylene decanamide, polybiscyclohexylmethane dodecanamide and copolymers or mixtures containing these as the main components are preferably used. .
【００１１】また、熱可塑性ポリアミド成分(B) には、
本発明の効果を損なわない範囲であれば、必要に応じて
艶消し剤、顔料、防炎剤、消臭剤、光安定剤、熱安定
剤、酸化防止剤等の添加剤を添加してもよい。Further, the thermoplastic polyamide component (B) contains
If necessary, additives such as matting agents, pigments, flameproofing agents, deodorants, light stabilizers, heat stabilizers, and antioxidants may be added as long as the effects of the present invention are not impaired. Good.
【００１２】アルカリ減量処理を施して本発明の中空ポ
リアミド繊維を製造する前の複合繊維において、鞘部
は、アルカリ易溶性ポリエステル成分(A) を５〜30重量
％、熱可塑性ポリアミド成分(B) を70〜95重量％混合し
た混合物とすることが必要である。鞘部に混合されるア
ルカリ易溶性ポリエステル成分(A) が５重量％未満であ
ると、繊維表面から中空部へ連通する微細孔が形成され
ない。また、30重量％を超えると、鞘層の強度低下が著
しくなり、繊維表面のフィブリル化及び中空部の潰れが
生じ、中空繊維としての実用性が失われる。In the composite fiber before the hollow polyamide fiber of the present invention is produced by the alkali weight reduction treatment, the sheath portion contains 5 to 30% by weight of the alkali-soluble polyester component (A) and the thermoplastic polyamide component (B). It is necessary to prepare a mixture of 70 to 95% by weight. When the amount of the alkali-soluble polyester component (A) mixed in the sheath portion is less than 5% by weight, fine pores communicating from the fiber surface to the hollow portion are not formed. On the other hand, if it exceeds 30% by weight, the strength of the sheath layer is remarkably deteriorated, the surface of the fiber is fibrillated and the hollow part is crushed, and the practicality as a hollow fiber is lost.
【００１３】[0013]
【実施例】次に、実施例により本発明を具体的に説明す
る。なお、実施例中における測定、評価は次のとおりに
行った。
(1) ナイロン６の相対粘度
96％硫酸を溶媒とし、濃度１ｇ／ｄｌ、温度25℃で測定
した。
(2) アルカリ減量率（％）
アルカリ減量処理前の芯鞘複合繊維を筒編みにした試料
に、水酸化ナトリウム水溶液処理（ＮａＯＨ49ｇ／ｌ、
30分沸騰、浴比１：200)を施し、処理前後の重さを測定
して減量率を算出した。
(3) 中空率
前記のアルカリ減量処理後の繊維の横断面の光学顕微鏡
写真を撮り、この写真を紙に複写し、繊維全体及び中空
部の割合を紙の重量から中空率を求めた。５枚の写真に
ついて行い、平均値とした。
(4) 吸放湿性
ウェール48本／2.54cm、コース44本／2.54cmの編組織の
インターロック編物とし、常法によって精練した後、住
友化学社製酸性染料 Suminol Milling Redを４％o.w.f.
用いて、浴比１：100 、 100℃で30分間染色した。この
染色した編物について、温度105 ℃で２時間乾燥して重
量Ｗ0 を測定し、その後、温度25℃、相対湿度60％の条
件下で２時間調湿して重量Ｗ1 を測定し、下記の式で初
期水分率Ｍ0 を求めた。次に、このサンプルを温度34
℃、相対湿度90％の条件下で24時間吸湿させた後、重量
Ｗ2 を測定し、水分率Ｍ1 を下記の式で算出した。その
後、このサンプルを引き続き、温度25℃、相対湿度60％
の条件下でさらに24時間放置した後、重量Ｗ3 を測定
し、放湿後の水分率Ｍ2 を下記の式で算出した。
Ｍ0 （％）＝〔（Ｗ1 −Ｗ0)／Ｗ0 〕×100
Ｍ1 （％）＝〔（Ｗ2 −Ｗ0)／Ｗ0 〕×100
Ｍ2 （％）＝〔（Ｗ3 −Ｗ0)／Ｗ0 〕×100
(5) 繊維表面状態評価
アルカリ水溶液処理後の繊維の表面及び横断面の状態を
走査型電子顕微鏡で撮影、観察し、次の３段階で評価し
た。
○：繊維表面から中空部へ連通する微細孔群がある。
△：繊維表面に微細孔群があるが、中空部へ連通してい
ない。
×：繊維表面に微細孔群がない。EXAMPLES Next, the present invention will be described in detail with reference to examples. The measurements and evaluations in the examples were carried out as follows. (1) Nylon 6 was measured at a concentration of 1 g / dl and a temperature of 25 ° C. using 96% relative viscosity of sulfuric acid as a solvent. (2) Alkaline Weight Loss Ratio (%) A sample prepared by knitting the core-sheath composite fibers before the alkaline weight loss treatment was treated with an aqueous sodium hydroxide solution (NaOH 49 g / l,
After boiling for 30 minutes and a bath ratio of 1: 200), the weight before and after the treatment was measured to calculate the weight loss rate. (3) Hollow ratio An optical micrograph of a cross section of the fiber after the alkali reduction treatment was taken, this photo was copied to paper, and the hollow ratio was calculated from the weight of the paper to determine the ratio of the whole fiber and the hollow portion. It performed about five photographs and made it the average value. (4) Moisture absorbing / releasing wales 48 pieces / 2.54 cm, course 44 pieces / 2.54 cm interlock knitted fabric, scoured by a conventional method, and then acid dye Suminol Milling Red manufactured by Sumitomo Chemical Co., Ltd.
It was dyed for 30 minutes at 100 ° C. in a bath ratio of 1: 100. The dyed knitted fabric was dried at a temperature of 105 ° C. for 2 hours to measure the weight W 0 , and then conditioned at a temperature of 25 ° C. and a relative humidity of 60% for 2 hours to measure the weight W 1. The initial moisture content M 0 was determined by the equation. Next, this sample is placed at a temperature of 34
After absorbing moisture for 24 hours under the condition of ° C and relative humidity of 90%, the weight W 2 was measured and the moisture content M 1 was calculated by the following formula. The sample is then continued at a temperature of 25 ° C and 60% relative humidity.
After being left for another 24 hours under the above condition, the weight W 3 was measured, and the moisture content M 2 after dehumidification was calculated by the following formula. M 0 (%) = [(W 1 −W 0 ) / W 0 ] × 100 M 1 (%) = [(W 2 −W 0 ) / W 0 ] × 100 M 2 (%) = [(W 3 -W 0 ) / W 0 ] × 100 (5) Evaluation of fiber surface condition The condition of the surface and cross section of the fiber after the treatment with the alkaline aqueous solution was photographed and observed with a scanning electron microscope, and evaluated in the following three stages. ◯: There is a group of fine holes communicating from the fiber surface to the hollow portion. Δ: There are fine pore groups on the fiber surface, but they do not communicate with the hollow portion. X: There are no fine pore groups on the fiber surface.
【００１４】実施例１〜４、比較例１〜４
アルカリ易溶性ポリエステル(A) として、5-ナトリウム
スルホイソフタル酸2.5 モル％、分子量6000のエチレン
グリコール13.3重量％を共重合したポリエチレンテレフ
タレート、熱可塑性ポリアミド(B) として、相対粘度2.
6 のナイロン６を用いて、表１に示すように、芯鞘複合
重量比率、鞘部の成分(A) ／(B) の混合重量比率、繊維
全体の(A) 成分の混合比率を種々変更し、図２に示す芯
鞘複合繊維を製造した。この際、紡糸温度を265 ℃と
し、36孔の紡糸口金を使用し、溶融紡出した糸条を15℃
の空気を吹き付けて冷却し、油剤を付与した後、1300ｍ
／分の速度で引き取った。引き取りローラと加熱ローラ
（60℃）の間で3.0 倍に延伸し、100 ｄ／36ｆの繊維を
得た。得られた複合繊維のアルカリ減量率、複合繊維を
減量処理して得た中空繊維の中空率、繊維表面状態、製
編した中空繊維の吸放湿性の評価結果を表１に示した。Examples 1 to 4 and Comparative Examples 1 to 4 Polyethylene terephthalate prepared by copolymerizing 2.5 mol% of 5-sodium sulfoisophthalic acid and 13.3% by weight of ethylene glycol having a molecular weight of 6000 as the alkali-soluble polyester (A), thermoplastic As polyamide (B), relative viscosity 2.
Using Nylon 6 of 6, as shown in Table 1, various changes were made to the core / sheath composite weight ratio, the sheath component (A) / (B) mixture weight ratio, and the total fiber (A) component mixture ratio. Then, the core-sheath composite fiber shown in FIG. 2 was manufactured. At this time, the spinning temperature was set to 265 ° C, a 36-hole spinneret was used, and the melt spun yarn was heated to 15 ° C.
1300m after spraying with air and cooling and applying oil
It was collected at a speed of / minute. It was stretched 3.0 times between the take-up roller and the heating roller (60 ° C) to obtain a fiber of 100 d / 36f. Table 1 shows the evaluation results of the alkali weight loss rate of the obtained conjugate fiber, the hollowness rate of the hollow fiber obtained by subjecting the conjugate fiber to the weight reduction treatment, the surface state of the fiber, and the moisture absorption / release property of the knitted hollow fiber.
【００１５】[0015]
【表１】 [Table 1]
【００１６】表１より明らかなように、実施例１〜４で
得られた中空繊維は、中空率が高く、繊維表面に中空部
まで連通する微細孔群を有しており、この繊維を製編し
たものは、吸放湿性に優れていた。一方、比較例１、２
で得られた中空繊維は、中空率が30％未満であったた
め、吸放湿性が十分でないものであった。また、比較例
３、４で得られた中空繊維は、鞘部の(A) 成分が少な過
ぎたため、繊維表面に中空部まで連通する微細孔群が十
分に形成されず、また、中空率も低過ぎたため吸放湿性
が十分でないものであった。As is clear from Table 1, the hollow fibers obtained in Examples 1 to 4 have a high hollow ratio and have a group of fine pores communicating with the hollow portion on the fiber surface. The knitted product was excellent in moisture absorption and desorption. On the other hand, Comparative Examples 1 and 2
The hollow fiber obtained in 1. had a hollow ratio of less than 30%, and thus was insufficient in moisture absorption and desorption. Further, in the hollow fibers obtained in Comparative Examples 3 and 4, the amount of the component (A) in the sheath portion was too small, so that the micropores communicating with the hollow portion were not sufficiently formed on the fiber surface, and the hollow ratio was also high. Since it was too low, the moisture absorption / release property was not sufficient.
【００１７】[0017]
【発明の効果】本発明の繊維は、繊維表面から中空部へ
と連通する微細孔群を有し、高中空率の中空繊維である
ため、優れた吸放湿性を有する。また、本発明の製造方
法によれば、このような中空繊維を容易に製造すること
が可能となる。EFFECTS OF THE INVENTION The fiber of the present invention has a group of fine pores communicating from the surface of the fiber to the hollow portion and is a hollow fiber having a high hollow ratio, and therefore has excellent moisture absorption and desorption properties. Moreover, according to the manufacturing method of the present invention, it becomes possible to easily manufacture such a hollow fiber.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 明 京都府宇治市宇治小桜23 ユニチカ株式 会社中央研究所内 (56)参考文献 特開 昭57−193559（ＪＰ，Ａ) 特開 平４−289226（ＪＰ，Ａ) 特開 平２−175965（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) D06M 11/00 - 11/84 D01F 6/60 D01F 8/14 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Yamamoto 23 Uji Kozakura, Uji City, Kyoto Prefecture Central Research Institute of Unitika Ltd. (56) Reference JP-A-57-193559 (JP, A) JP-A-4-289226 ( JP, A) JP-A-2-175965 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) D06M 11/00-11/84 D01F 6/60 D01F 8/14
Claims (3)
(A) を含有する複合繊維をアルカリ減量処理してアルカ
リ易溶性ポリエステル (A) を溶出することにより、繊維
表面に微細孔群、繊維内部に中空部を生じさせた繊維で
あって、中空率が 30 ％以上であり、微細孔群の少なくと
も一部は中空部から繊維表面へ連通していることを特徴
とする微細孔中空ポリアミド繊維。1. A readily soluble alkali polyester in the core and the sheath.
The composite fiber containing (A) is treated with alkali to reduce the alkali
By eluting the easily soluble polyester (A) ,
A fiber with a group of micropores on the surface and hollow parts inside the fiber.
In addition, the microporous hollow polyamide fiber is characterized by having a hollow ratio of 30 % or more and at least a part of the micropore group communicating from the hollow portion to the fiber surface.
鞘部がアルカリ易溶性ポリエステル (A) と熱可塑性ポリ
アミド (B) の重量比が５： 95 〜 30 ： 70 の混合物からなる
複合繊維をアルカリ減量処理してアルカリ易溶性ポリエ
ステル (A) を溶出することにより、繊維表面に微細孔
群、繊維内部に中空部生じさせた繊維であって、中空率
が 30 ％以上、微細孔群の少なくとも一部は中空部から繊
維表面へ連通していることを特徴とする微細孔中空ポリ
アミド繊維。 2. A core easily soluble alkali-soluble polyester (A) ,
The sheath is made of alkali-soluble polyester (A) and thermoplastic poly
The weight ratio of the amide (B) is 5: a mixture of 70: 95-30
Alkali-soluble poly (polyethylene)
By eluting stell (A) , fine pores are formed on the fiber surface.
Group, fibers that are hollow inside the fiber, hollow ratio
Is 30 % or more, and at least a part of the group of micropores is
Microporous hollow poly characterized by communicating with the surface of the fiber
Amide fiber.
、鞘部がアルカリ易溶性ポリエステル(A) と熱可塑性
ポリアミド(B) の重量比が５：95〜30：70の混合物から
なる複合繊維を紡糸し、その後、アルカリ減量処理して
アルカリ易溶性ポリエステル(A) を溶出することを特徴
とする請求項１又は２記載の微細孔中空ポリアミド繊維
の製造方法。3. The alkali-soluble polyester (A) having a core portion
, A sheath is made of a mixture of alkali-soluble polyester (A) and thermoplastic polyamide (B) in a weight ratio of 5:95 to 30:70, spun into a composite fiber, and then alkali-reducing treatment is performed to reduce the alkali-soluble polyester. (A) is eluted, The manufacturing method of the microporous hollow polyamide fiber of Claim 1 or 2 characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09081596A JP3510731B2 (en) | 1996-04-12 | 1996-04-12 | Microporous hollow polyamide fiber and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09081596A JP3510731B2 (en) | 1996-04-12 | 1996-04-12 | Microporous hollow polyamide fiber and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09279476A JPH09279476A (en) | 1997-10-28 |
| JP3510731B2 true JP3510731B2 (en) | 2004-03-29 |
Family
ID=14009102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09081596A Expired - Fee Related JP3510731B2 (en) | 1996-04-12 | 1996-04-12 | Microporous hollow polyamide fiber and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3510731B2 (en) |
Cited By (1)
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| KR100333125B1 (en) * | 2000-07-24 | 2002-04-18 | 이영규 | Method for making fabric with excellent water-transition ability |
| JP4601336B2 (en) * | 2004-06-11 | 2010-12-22 | ユニチカトレーディング株式会社 | Polyamide fabric |
| JP2007332479A (en) * | 2006-06-13 | 2007-12-27 | Unitica Fibers Ltd | Mixture-spun fiber |
| JP2007332486A (en) * | 2006-06-14 | 2007-12-27 | Unitica Fibers Ltd | Polyamide microporous hollow fibers |
| CN103668556B (en) * | 2012-09-19 | 2017-12-19 | 东丽纤维研究所（中国）有限公司 | A kind of hollow blended fiber and its manufacture method and purposes |
| KR101414206B1 (en) * | 2013-11-08 | 2014-07-18 | 도레이케미칼 주식회사 | C-shaped cross-section with a hollow fiber and method for manufacturing thereof |
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| EP3150751B1 (en) * | 2014-05-26 | 2021-09-08 | Kuraray Co., Ltd. | Polyamide fibers, fiber structure using same, and clothing |
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-
1996
- 1996-04-12 JP JP09081596A patent/JP3510731B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023128626A1 (en) * | 2021-12-31 | 2023-07-06 | 주식회사 비즈링크 | Bathrobe with excellent heat retention and washing durability |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09279476A (en) | 1997-10-28 |
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