JP3109793B2 - Suede-like artificial leather - Google Patents
Suede-like artificial leatherInfo
- Publication number
- JP3109793B2 JP3109793B2 JP06247535A JP24753594A JP3109793B2 JP 3109793 B2 JP3109793 B2 JP 3109793B2 JP 06247535 A JP06247535 A JP 06247535A JP 24753594 A JP24753594 A JP 24753594A JP 3109793 B2 JP3109793 B2 JP 3109793B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- fibers
- fine
- ultrafine
- fineness
- 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
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、外観が良好で、かつ発
色性、風合いおよび耐ピリング性に優れたスエード調人
工皮革およ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 suede-like artificial leather having a good appearance and excellent color development, hand and pilling resistance, and a method for producing the same.
【0002】[0002]
【従来の技術】従来、繊維束と弾性重合体とからなる基
体の表面に該繊維束からなる立毛を存在させたスエード
調人工皮革は公知である。そしてこのようにスエ―ド調
人工皮革の分野において高品質化が要求され、外観(ス
エード感)、風合い(柔軟な手触り)、発色性等の感性
面と、耐ピリング性等の物性面をすべて満足する高品質
のものが求められている。具体的には、外観の優れたス
エード調人工皮革と得るために、人工皮革を構成してい
る繊維を極細化する方法が一般に用いられているが、繊
維を極細化した場合には、くすんだ白っぽい色にしか染
色できず、鮮やかな色を有するものが得られず、発色性
の点で劣るという欠点を有している。また、人工皮革の
風合い(手触り)を極めて柔軟な良好なものとするため
に、人工皮革を構成している繊維束の内部に弾性重合体
が実質的に存在しないようにすることが行われている
が、繊維束の内部に弾性重合体が存在しない場合には、
立毛繊維が容易に引き抜かれていわゆる耐ピリング性が
悪化するという問題点が生じる。2. Description of the Related Art Conventionally, artificial suede-like leather in which naps made of a fiber bundle are present on the surface of a substrate made of a fiber bundle and an elastic polymer is known. In this way, high quality is demanded in the field of suede-like artificial leather, and all aspects of appearance (suede feeling), texture (flexible touch), color development, etc., and physical properties, such as pilling resistance, are all required. Satisfactory high quality products are required. Specifically, in order to obtain a suede-like artificial leather having an excellent appearance, a method of making the fibers constituting the artificial leather ultra-fine is generally used, but when the fibers are made ultra-fine, it becomes dull. It has the drawback that it can be dyed only in whitish color, does not have a vivid color, and is inferior in color development. Further, in order to make the texture (feel) of the artificial leather extremely flexible and good, it has been practiced that the elastic polymer is not substantially present inside the fiber bundle constituting the artificial leather. However, if there is no elastic polymer inside the fiber bundle,
There is a problem that the nap fibers are easily pulled out and the so-called pilling resistance deteriorates.
【0003】このような繊維立毛スエ―ド調人工皮革の
発色性改良については、繊維立毛シ―トの表面に易染性
樹脂を付与して染色することが特公昭55−506号公
報で、またアルカリの存在下で還元されて水溶性となる
染料で染色し、酸化して染料を固着する染色法が特公昭
61−25834号公報や特公昭61−46592号公
報などで提案されている。また、繊維立毛スエ―ド調人
工皮革の耐ピリング性改良については、重合体の溶剤で
立毛の根元の重合体の一部を溶解し、表面の立毛繊維の
根元を固定する方法が特開昭57−154468号公報
で提案されている。[0003] In order to improve the color development of such a fiber-naped suede-like artificial leather, it is disclosed in Japanese Patent Publication No. 55-506 by applying an easily dyeable resin to the surface of the fiber-napped sheet and dyeing it. Further, a dyeing method of dyeing with a dye which becomes water-soluble by being reduced in the presence of an alkali, and oxidizing to fix the dye has been proposed in JP-B-61-25834 and JP-B-61-46592. Regarding the improvement of the pilling resistance of a fibrous napped suede-like artificial leather, a method of dissolving a part of the polymer at the root of the napped fiber with a polymer solvent and fixing the root of the napped fiber on the surface is disclosed in Japanese Unexamined Patent Publication No. Sho. It has been proposed in Japanese Patent Application Laid-Open No. 57-154468.
【0004】また、繊度の異なる極細繊維の混在した極
細繊維束としては、混合紡糸繊維において島成分の大き
さの分布が、外周から半径の1/4以内に存在する島成
分の繊度DSと、中心から半径の2/3以内に存在する
島成分の繊度DCがDC≧1.5DSを満足させる繊維構造
が特開昭63−243314号公報に、また極細繊維束
状繊維の束の内部にポリウレタンが含有されており、か
つ該束の内部および周辺に平均直径1.0μm以下、ア
スペクト比500〜2200の極細ポリオレフィン繊維
が分散している繊維質シ―トが特開平3−260150
号公報に、また島成分として0.02〜0.2デニ―ルの
細繊維(A)と0.001〜0.01デニ―ルの極細繊維
(B)が、重量比で30/70〜70/30の割合いで
混合、分散したポリアミド極細繊維発生型繊維およびこ
の繊維から得られたスエ―ド調人工皮革が特開平5−1
56579号公報に、それぞれ記載されている。[0004] Further, as a microfine fiber bundle in which microfine fibers having different finenesses are mixed, the distribution of the size of the island components in the mixed spun fiber is such that the fineness DS of the island components present within 1/4 of the radius from the outer periphery is: Japanese Patent Application Laid-Open No. 63-243314 discloses a fiber structure in which the fineness DC of the island component existing within 2/3 of the radius from the center satisfies DC ≧ 1.5DS, and polyurethane inside the bundle of ultrafine fiber bundle fibers. And ultrafine polyolefin fibers having an average diameter of 1.0 μm or less and an aspect ratio of 500 to 2200 dispersed inside and around the bundle are disclosed in JP-A-3-260150.
The publication discloses that 0.02 to 0.2 denier fine fibers (A) and 0.001 to 0.01 denier ultrafine fibers (B) are used as island components in a weight ratio of 30/70 to Polyamide ultrafine fiber generating fibers mixed and dispersed at a ratio of 70/30 and suede-like artificial leather obtained from these fibers are disclosed in
No. 56579, respectively.
【0005】[0005]
【発明が解決しようとする課題】しかしながら上記の特
公昭55−506号公報や、特公昭61−25834号
公報、61−46592号公報に記載されているような
発色性の改良方法は、発色性自体は改良できるものの、
繊維立毛面の外観や触感、風合いを低下させるものであ
った。また、特開昭63−243314号公報に記載の
技術は、異なる太さの極細繊維がそれぞれ局在している
ことと、該方法によっては島成分極細繊維の繊度差を大
きく出来ないため、外観と発色性の両立が困難であっ
た。特開平5−156579号公報に記載の技術は、特
開昭63−243314号公報に記載の技術と比べると
発色性が幾分か改良されているが、繊度の小さい極細繊
維(B)の比率が大きいため、立毛表面には極細繊維が
多数存在しており、発色性はまだ不十分である。この技
術でも立毛表面を毛羽立てる際の条件として苛酷な条件
を採用することにより立毛表面の極細繊維を選択的に切
断除去して発色性を高めることは可能であるが、そのよ
うな苛酷な条件を採用すると細繊維(A)も同時に傷つ
けられ、切断されることとなるため外観の良好なスエー
ド調人工皮革が得られないこととなる。また、特開昭5
7−154468号公報に記載の方法では、極細繊維束
の内部にポリウレタンが存在するため、風合いが硬くな
ることが避けられなかった。本発明は、外観、風合いが
良好で、かつ発色性と耐ピリング性に優れたスエード調
人工皮革、およびその製造方法を提供することである。However, the method for improving the color development as described in JP-B-55-506, JP-B-61-25834, and 61-46592 has been proposed. Although it can be improved,
It reduced the appearance, touch and texture of the fiber nap. Further, the technique described in JP-A-63-243314 discloses that the fine fibers having different thicknesses are localized, and the fineness difference of the island component fine fibers cannot be increased by this method. And color development were difficult to achieve at the same time. The technique described in Japanese Patent Application Laid-Open No. 5-156579 has a somewhat improved coloring property as compared with the technique described in Japanese Patent Application Laid-Open No. 63-243314, but the proportion of the ultrafine fibers (B) having a small fineness is small. Is large, so that a large number of ultrafine fibers are present on the piloerection surface, and the coloring property is still insufficient. Even with this technique, it is possible to selectively cut and remove ultrafine fibers on the nap surface by employing severe conditions as a condition for shaving the nap surface, thereby improving the coloring property. When the fine fiber (A) is employed, the fine fiber (A) is also damaged and cut, so that a suede-like artificial leather having a good appearance cannot be obtained. In addition, Japanese Unexamined Patent Publication No.
In the method described in JP-A-7-154468, since the polyurethane exists inside the ultrafine fiber bundle, it is inevitable that the feel becomes hard. An object of the present invention is to provide a suede-like artificial leather having good appearance and texture, and excellent coloration and pilling resistance, and a method for producing the same.
【0006】[0006]
【課題を解決するための手段】本発明は、繊維束と弾性
重合体とからなる基体の表面に繊維立毛が存在しており
かつ染色されているスエード調人工皮革において、該基
体を構成している繊維束が、0.02〜0.2デニールの
細繊維(A)と、細繊維(A)の平均繊維度の1/5以
下でかつ0.02デニール未満の繊度の極細繊維(B)
とからなり、Aの本数とBの本数の比(A/B)が2/
1〜2/3で、かつ繊維束内部には実質的に弾性重合体
が含有されておらず、さらに該立毛面を上面から見た場
合に立毛繊維中のAの本数とBの本数の比(A/B)が
3/1以上であることを特徴とするスエード調人工皮革
である。SUMMARY OF THE INVENTION The present invention relates to a suede-like artificial leather in which fiber naps are present and dyed on the surface of a base comprising a fiber bundle and an elastic polymer, wherein the base is constituted. The fiber bundle is a fine fiber (A) having a denier of 0.02 to 0.2, and an ultrafine fiber (B) having a fineness of 1/5 or less of the average fiber degree of the fine fiber (A) and less than 0.02 denier.
And the ratio of the number of A to the number of B (A / B) is 2 /
The ratio of the number of A to the number of B in the nap fibers when the nap surface is viewed from the upper surface. (A / B) is 3/1 or more, which is a suede-like artificial leather.
【0007】本発明のスエ―ド調人工皮革は、例えば、
以下の工程(a)〜(f) (a)溶解または分解除去することのできる海成分ポリ
マー中に、島成分として平均繊度0.02〜0.2デニ―
ルの細繊維(A)と細繊維(A)の平均繊度の1/5以
下でかつ0.02デニール未満の繊度の極細繊維(B)
とが繊維横断面において好ましくはほぼ均一に混合・分
散しており、その本数の比(A/B)が2/1〜2/3
である、細繊維(A)及び極細繊維(B)からなる束に
変成し得る、細繊維及び極細繊維発生型繊維[以下極細
繊維発生型繊維または繊維(C)と称す)]を製造する
工程、(b)該繊維(C)からなる絡合不織布を製造す
る工程、(c)該絡合不織布に弾性重合体液を含浸し湿
式凝固する工程、(d)該繊維(C)を細繊維および極
細繊維からなる繊維束に変成する工程、(e)少なくと
も一面に立毛を形成する工程、(f)得られた繊維立毛
シートを染色する工程、を順次行うことにより得ること
ができる。The suede-like artificial leather of the present invention is, for example,
The following steps (a) to (f): (a) In a marine polymer which can be dissolved or decomposed and removed, an average fineness of 0.02 to 0.2 denier is contained as an island component.
Microfiber (B) having a fineness of not more than 1/5 of the average fineness of fine fibers (A) and fine fibers (A) and less than 0.02 denier
Are preferably uniformly mixed and dispersed in the cross section of the fiber, and the ratio (A / B) is 2/1 to 2/3.
For producing a fine fiber and a fine fiber-generating fiber (hereinafter referred to as a fine fiber-generating fiber or fiber (C)) which can be transformed into a bundle composed of the fine fiber (A) and the fine fiber (B). (B) a step of producing an entangled non-woven fabric comprising the fiber (C); (c) a step of impregnating the entangled non-woven fabric with an elastic polymer solution and wet-solidifying; (d) converting the fiber (C) into a fine fiber and It can be obtained by sequentially performing a step of transforming into a fiber bundle composed of ultrafine fibers, (e) a step of forming nap on at least one surface, and (f) a step of dyeing the obtained fiber nap sheet.
【0008】本発明の極細繊維発生型繊維(C)におい
て、島成分を構成するポリマ―、すなわち細繊維(A)
および極細繊維(B)を構成するポリマーとしては、例
えば、6−ナイロン、66−ナイロンをはじめとする溶
融紡糸可能なポリアミド類、ポリエチレンテレフタレ―
ト、ポリブチレンテレフタレ―ト、カチオン可染型変性
ポリエチレンテレフタレ―トをはじめとする溶融紡糸可
能なポリエステル類などから選ばれた、少なくとも1種
類のポリマ―である。細繊維(A)と極細繊維(B)は
同一のポリマーであっても、異なるポリマーであっても
よい。In the ultrafine fiber generating fiber (C) of the present invention, the polymer constituting the island component, that is, the fine fiber (A)
Examples of the polymer constituting the ultrafine fiber (B) include polyamides such as 6-nylon and 66-nylon, which can be melt-spun, and polyethylene terephthalate.
And at least one polymer selected from melt-spinnable polyesters such as polybutylene terephthalate and cationic dyeable modified polyethylene terephthalate. The fine fibers (A) and the ultrafine fibers (B) may be the same polymer or different polymers.
【0009】一方、海成分を構成するポリマ―は、島成
分と溶剤または分解剤に対する溶解性または分解性を異
にし(海成分を構成するポリマーの方が溶解性または分
解性が大きい)、島成分との親和性の小さいポリマ―で
あって、かつ紡糸条件下で島成分の溶融粘度より小さい
溶融粘度であるか、あるいは表面張力の小さいポリマ―
であり、例えば、ポリエチレン、ポリスチレン、変性ポ
リスチレン、エチレンプロピレン共重合体などの易溶解
性のポリマーや、スルホイソフタル酸ナトリウムやポリ
エチレングリコール等で変性したポリエチレンテレフタ
レートなどの易分解性のポリマ―から選ばれた少なくと
も1種類のポリマ―である。On the other hand, the polymer constituting the sea component differs in solubility or degradability from the island component to a solvent or a decomposer (the polymer constituting the sea component has higher solubility or degradability). A polymer that has a low affinity for the component and has a melt viscosity smaller than the melt viscosity of the island component or a low surface tension under spinning conditions.
For example, selected from readily soluble polymers such as polyethylene, polystyrene, modified polystyrene, and ethylene propylene copolymer, and easily degradable polymers such as polyethylene terephthalate modified with sodium sulfoisophthalate, polyethylene glycol, and the like. And at least one polymer.
【0010】添付図面は、極細繊維発生型繊維(C)の
断面模式図である。図面に示されているように、極細繊
維発生型繊維(C)は、海成分ポリマー(1)の中に、
島成分として、平均繊度の大きい細繊維(A)と、平均
繊度の小さい極細繊維(B)の2つの群を含んでおり、
これらの細繊維(A)と極細繊維(B)は繊維横断面に
おいて、好ましくは、局部的に偏在することなく、横断
面全体にわたってほぼ均一に分散した状態にある。即
ち、細繊維(A)と極細繊維(B)が偏在しているよう
な繊維は本発明においては好ましくない。本発明おい
て、細繊維(A)と極細繊維(B)は、平均繊度におい
て異なるのみならず、構成する個々の繊維の繊度におい
ても明らかに異にするものである。The accompanying drawing is a schematic cross-sectional view of a microfiber-generating fiber (C). As shown in the drawing, the ultrafine fiber-generating fiber (C) is contained in the sea component polymer (1).
As an island component, it includes two groups, a fine fiber having a large average fineness (A) and a microfiber having a small average fineness (B),
The fine fibers (A) and the ultrafine fibers (B) are preferably substantially uniformly dispersed in the fiber cross section without being locally localized. That is, fibers in which the fine fibers (A) and the ultrafine fibers (B) are unevenly distributed are not preferable in the present invention. In the present invention, the fine fibers (A) and the ultrafine fibers (B) are not only different in average fineness but also obviously different in fineness of each of the constituent fibers.
【0011】このような極細繊維発生型繊維(C)は、
極細繊維(B)を構成するポリマーと海成分ポリマーと
を所定の混合比で混合して、同一溶融系で溶融し、これ
と、別の系で溶融した細繊維(A)を構成するポリマー
とを、紡糸頭部で接合−分割を複数回繰り返して両者の
混合系を形成して紡糸する方法、あるいは両者を紡糸口
金部で繊維形状を規定して合流させ紡糸する方法等によ
り得られる。つまり、極細繊維(B)を構成するポリマ
ーと海成分ポリマーとを所定の混合比で混合して、同一
溶融系で溶融した混合ポリマーを海成分とし、細繊維
(A)を構成するポリマーが島成分として該海成分中に
ほぼ均一に分散するように複合紡糸することにより得ら
れる。Such an ultrafine fiber-generating fiber (C) is
The polymer constituting the ultrafine fiber (B) and the sea component polymer are mixed at a predetermined mixing ratio, melted in the same melting system, and the polymer forming the fine fiber (A) melted in another system. Can be obtained by repeating the joining and splitting at the spinning head a plurality of times to form a mixed system of the two and spinning, or by spinning the two by defining the fiber shape at the spinneret. In other words, the polymer constituting the ultrafine fiber (B) and the sea component polymer are mixed at a predetermined mixing ratio, the mixed polymer melted in the same melting system is used as the sea component, and the polymer constituting the fine fiber (A) is an island. It is obtained by compound spinning as a component so as to be substantially uniformly dispersed in the sea component.
【0012】ここで、細繊維(A)と極細繊維(B)を
構成するポリマ―は、上記したように同種であっても異
種であってもよいが、細繊維(A)の繊度は0.02〜
0.2デニ―ル、極細繊維(B)の繊度は細繊維(A)
の平均繊度の1/5以下でかつ0.02デニール未満で
あり、その本数の比(A/B)は2/1〜2/3の範囲
となるようにする。細繊維(A)の繊度が0.02デニ
―ルより小さいと、製品の発色性が不足し、0.2デニ
ールより大きいと、外観の品位を確保することが困難と
なる。また本発明において、細繊維(A)は、繊度がほ
ぼ均一であるのが外観及び風合いの点で好ましく、具体
的には該繊維束中において細繊維(A)の内の最も細い
繊維と最も太い繊維との繊度比が1:1〜1:3の範囲
内にあるのが好ましい。The polymer constituting the fine fiber (A) and the ultrafine fiber (B) may be the same or different as described above, but the fineness of the fine fiber (A) is 0. .02-
0.2 denier, fine fiber (B) fineness is fine fiber (A)
The average fineness is less than 1/5 and less than 0.02 denier, and the ratio (A / B) of the number is in the range of 2/1 to 2/3. When the fineness of the fine fiber (A) is smaller than 0.02 denier, the color development of the product is insufficient, and when the fineness is larger than 0.2 denier, it is difficult to secure the quality of appearance. In the present invention, the fine fibers (A) preferably have a substantially uniform fineness in terms of appearance and texture. Specifically, the fine fibers (A) and the finest fibers of the fine fibers (A) in the fiber bundle are most suitable. It is preferable that the fineness ratio with the thick fiber is in the range of 1: 1 to 1: 3.
【0013】また、極細繊維(B)は、細繊維(A)に
からみつくことでピリングを防止するものであり、外観
の品位の保持と発色性を両立させる意味から、繊度は細
繊維(A)の平均繊度の1/5以下で0.02デニール
未満、好ましくは平均繊度が、細繊維(A)の平均繊度
の1/10以下1/50以上でかつ0.01デニール以
下0.001デニール以上、より好ましくは平均繊度が
0.01デニール以下0.0015デニール以上である。
極細繊維の繊度が余りに細すぎる場合にはピリング防止
効果が低く、したがって好適な下限値としては上記の繊
度0.001デニール、より好適な繊度としては上記の
0.0015デニール以上である。極細繊維(B)は、
一般に上記したようにポリマーを混合して同一条件で溶
融する方法が用いられるため繊維間の繊度のばらつきが
大きいが、本発明では細繊維(A)の平均繊度の1/5
以下でかつ0.02デニール未満のものを極細繊維
(B)としている。The ultrafine fibers (B) are intended to prevent pilling by clinging to the fine fibers (A), and have a fineness of fine fibers (A) from the viewpoint of maintaining both the quality of appearance and the color development. 1/5 or less of the average fineness and less than 0.02 denier, preferably the average fineness is 1/10 or less and 1/50 or more of the average fineness of the fine fiber (A) and 0.01 denier or less and 0.001 denier or more. The average fineness is more preferably 0.01 denier or less and 0.0015 denier or more.
When the fineness of the ultrafine fibers is too small, the effect of preventing pilling is low. Therefore, a preferable lower limit is 0.001 denier as described above, and a more preferable fineness is 0.0015 denier or more. The ultrafine fiber (B)
Generally, as described above, since the method of mixing and melting the polymer under the same conditions is used, the variation in the fineness between the fibers is large, but in the present invention, 1/5 of the average fineness of the fine fiber (A) is used.
Those having a density of less than 0.02 denier are defined as ultrafine fibers (B).
【0014】また極細繊維(B)は、ポリマーを混合し
て同一溶融系で溶解した混合ポリマー流から得られるも
のであることより、繊維長は有限であるが、ピリング防
止効果の点で、長さ5mm以上が好ましい。極細繊維
(B)の繊維長は、紡糸する際のポリマーの組合せを選
ぶことにより変えることができる。構成するポリマーと
して前記したポリエステル系やポリアミド系のポリマー
等を用いた場合には繊維長の十分に長い繊維が得られ
る。本発明において、繊維束は、実質的に上記した細繊
維(A)と極細繊維(B)のみからなるものである場合
が好ましいが、少量ならば、上記した細繊維(A)およ
び極細繊維(B)の範疇に入らない繊度の繊維が存在し
ていてもよい。一繊維束断面中に存在する細繊維(A)
の本数としては、15〜100本の範囲が発色性及び外
観の点で好ましい。The ultrafine fiber (B) is obtained from a mixed polymer stream in which a polymer is mixed and dissolved in the same molten system. Therefore, the fiber length is finite, but in view of the effect of preventing pilling, the fiber is long. It is preferably at least 5 mm. The fiber length of the ultrafine fiber (B) can be changed by selecting a combination of polymers for spinning. When the above-mentioned polyester-based or polyamide-based polymer is used as a constituent polymer, a fiber having a sufficiently long fiber length can be obtained. In the present invention, it is preferable that the fiber bundle is substantially composed of only the fine fibers (A) and the ultrafine fibers (B), but if the amount is small, the fine fibers (A) and the ultrafine fibers ( Fibers of fineness that does not fall into the category of B) may be present. Fine fiber (A) existing in the cross section of one fiber bundle
Is preferably in the range of 15 to 100 in terms of color development and appearance.
【0015】本発明において、バフィング前の立毛繊維
形成繊維束には細繊維(A)と極細繊維(B)の両者が
混在しているが、立毛を形成させる際のバフィングにお
いて、極細繊維(B)の方が切断されやすいため、立毛
最表面部における細繊維(A)と極細繊維(B)の本数
比(A/B)は、基体層における本数比(A/B)と比
べて大きくなる。発色性は立毛最表面部の繊維の太さ及
び本数に左右され、立毛最表面部は、細繊維(A)の割
合が高いほど好ましく、(A/B)で3/1以上とする
ことが、良好な発色性を得る上で必要である。立毛処理
条件を選ぶことにより、立毛最表面に存在する極細繊維
(B)の数を実質的に0とすることは可能であり、その
場合は(A/B)は無限大となるが、通常の工業的な立
毛処理条件下では、立毛最表面の(A/B)比は100
/1以下である。In the present invention, both the fine fiber (A) and the ultrafine fiber (B) are mixed in the nap fiber forming fiber bundle before buffing, but the ultrafine fiber (B) is used in the buffing for forming the nap. ) Is easier to cut, so that the number ratio (A / B) of the fine fibers (A) and the ultrafine fibers (B) at the top surface of the nap is larger than the number ratio (A / B) of the base layer. . The coloring property depends on the thickness and the number of the fibers in the outermost nap portion, and the uppermost nap portion is preferably as high as the ratio of the fine fibers (A), and is preferably 3/1 or more in (A / B). Is necessary for obtaining good color development. It is possible to make the number of the ultrafine fibers (B) present on the outermost surface of the napped hair substantially zero by selecting the napped processing conditions. In that case, (A / B) becomes infinite, but usually Under the industrial napping treatment conditions, the (A / B) ratio of the nap top surface is 100.
/ 1 or less.
【0016】基体層における(A/B)比が2/1以上
の場合には、立毛最表面部における(A/B)が大きく
なり発色性の点からは好ましいが、極細繊維(B)が細
繊維(A)に絡み付くことによるピリング防止効果が大
きく低下するため、製品のピリング性が劣ることとな
る。また基体層における(A/B)比が2/3以下の場
合には、立毛最表面部の(A/B)比を3/1以上にす
るためには、バフィングをゆっくり且つ何回も繰り返さ
なければならないため、生産性に劣ることとなり、生産
性を高めるためにバフィングを強い条件で行うと、細繊
維(A)まで切断されることとなるため高級感あるスエ
ード調のものが得られない。したがって基体における細
繊維(A)と極細繊維(B)の本数の比(A/B)は、
外観の品位の保持と発色性及び耐ピリング性を両立させ
る意味から、2/1〜2/3の範囲内であることが極め
て重要ということになる。When the (A / B) ratio in the base layer is 2/1 or more, (A / B) at the outermost surface of the nap is increased, which is preferable from the viewpoint of color development. Since the effect of preventing pilling by entanglement with the fine fiber (A) is greatly reduced, the pilling property of the product is inferior. When the (A / B) ratio in the base layer is 2/3 or less, buffing is repeated slowly and many times in order to make the (A / B) ratio of the top surface of the naps 3/1 or more. Therefore, if buffing is performed under strong conditions in order to enhance productivity, fine fibers (A) are cut, and a high-quality suede-like product cannot be obtained. . Therefore, the ratio (A / B) of the number of the fine fibers (A) and the ultrafine fibers (B) in the substrate is as follows:
It is extremely important that the ratio be in the range of 2/1 to 2/3 from the viewpoint of maintaining the quality of the appearance and at the same time achieving both the coloring property and the pilling resistance.
【0017】極細繊維(B)の繊度、本数および繊維長
は、極細繊維(B)を構成するポリマーと海成分ポリマ
ーの混合比率、溶融粘度、表面張力などの組み合わせを
変えることにより調整することができる。一般に、海成
分ポリマーに対する極細繊維(B)を構成するポリマー
の混合比率を高くすれば極細繊維(B)の繊度はほとん
ど変わらないが本数が多くなり、溶融粘度、表面張力を
高くすれば繊度が大きく、本数は少なく、繊維長は短く
なる傾向にある。この傾向を基に、繊維(C)中での極
細繊維(B)の繊度と本数および繊維長は、極細繊維
(B)を構成するポリマーと海成分ポリマーを適宜組み
合わせて実際の紡糸温度および速度に合わせて試験紡糸
することにより予測することができる。The fineness, number and length of the ultrafine fibers (B) can be adjusted by changing the combination of the mixing ratio of the polymer constituting the ultrafine fibers (B) and the sea component polymer, melt viscosity, surface tension and the like. it can. Generally, if the mixing ratio of the polymer constituting the microfiber (B) to the sea component polymer is increased, the fineness of the microfiber (B) hardly changes, but the number increases, and if the melt viscosity and surface tension are increased, the fineness increases. Large, the number is small, and the fiber length tends to be short. Based on this tendency, the fineness, the number, and the fiber length of the microfiber (B) in the fiber (C) are determined by appropriately combining the polymer constituting the microfiber (B) and the sea component polymer with the actual spinning temperature and speed. It can be predicted by performing test spinning in accordance with.
【0018】極細繊維発生型繊維(C)中に占める細繊
維(A)成分及び極細(B)繊維成分の合計の比率は、
40〜80重量%が紡糸安定性や経済性の点で好まし
い。The total ratio of the fine fiber (A) component and the ultrafine (B) fiber component in the ultrafine fiber generating fiber (C) is as follows:
40 to 80% by weight is preferable in view of spinning stability and economy.
【0019】極細繊維発生型繊維(C)は、必要に応じ
て延伸、捲縮、熱固定、カットなどの処理工程を経て繊
度2〜10デニールの繊維とする。なお、本発明で言う
繊度及び平均繊度は極細繊維発生型繊維(C)の断面か
ら容易に求められる、すなわち極細繊維発生型繊維
(C)の断面の顕微鏡写真を撮り、細繊維(A)と極細
繊維(B)のそれぞれの本数を数え、長さ9000mの
繊維(C)を構成している細繊維(A)および極細繊維
(B)のそれぞれの重量をそれぞれの本数で割ることに
より求められる。同様の方法により、繊維(C)を細繊
維(A)と極細繊維(B)の繊維束に変成したのちの繊
維束からも、容易に細繊維(A)と極細繊維(B)の繊
度および平均繊度が求められる。また極細繊維(B)の
繊維長に関しても、スエード調人工皮革をジメチルホル
ムアミド等で処理して含有されている弾性重合体を除去
したのち、繊維束を取り出し、顕微鏡で観察することに
より、5mm以上であるか否かが容易に分かる。The ultrafine fiber-generating fiber (C) is converted into a fiber having a fineness of 2 to 10 denier through processing steps such as stretching, crimping, heat setting, and cutting as required. In addition, the fineness and average fineness referred to in the present invention can be easily obtained from the cross section of the microfiber-generating fiber (C). It is obtained by counting the number of the ultrafine fibers (B) and dividing the weight of each of the fine fibers (A) and the ultrafine fibers (B) constituting the 9000 m-long fiber (C) by the respective numbers. . By the same method, the fineness of the fine fiber (A) and the fine fiber (B) can be easily obtained from the fiber bundle after the fiber (C) is transformed into the fiber bundle of the fine fiber (A) and the fine fiber (B). Average fineness is required. Regarding the fiber length of the ultrafine fiber (B), after treating the suede-like artificial leather with dimethylformamide or the like to remove the contained elastic polymer, the fiber bundle is taken out and observed with a microscope to obtain a fiber length of 5 mm or more. Or not.
【0020】極細繊維発生型繊維(C)をカードで解繊
し、ウェバーを通してランダムウェブまたはクロスラッ
プウェブを形成し、得られた繊維ウェブを所望の重さ、
厚さに積層する。次いで、ニードルパンチ、高速流体流
パンチなどの公知の方法で絡合処理を行なって不織布と
する。不織布化する際に、必要により、上記極細繊維発
生型繊維(C)以外の繊維を少量添加してもよい。また
必要に応じて、不織布に、溶解除去可能な樹脂、たとえ
ばポリビニルアルコール系樹脂を付与して、不織布を仮
固定してもよい。The microfiber-generating fiber (C) is defibrated with a card, a random web or a cross-wrap web is formed through a webber, and the obtained fiber web is weighed to a desired weight.
Laminate to thickness. Next, entanglement is performed by a known method such as a needle punch or a high-speed fluid flow punch to obtain a nonwoven fabric. When forming into a nonwoven fabric, if necessary, a small amount of fibers other than the ultrafine fiber-generating fiber (C) may be added. If necessary, a resin that can be dissolved and removed, for example, a polyvinyl alcohol-based resin, may be applied to the nonwoven fabric to temporarily fix the nonwoven fabric.
【0021】次に繊維絡合不織布に弾性重合体を含浸、
凝固する。繊維絡合不織布に含浸する弾性重合体は、例
えば、ポリエステルジオ―ル、ポリエ―テルジオ―ル、
ポリエーテルエステルジオール、ポリカ―ボネ―トジオ
―ルなどから選ばれた少なくとも1種類の平均分子量5
00〜3000のポリマ―ジオ―ルと、4,4’−ジフ
ェニルメタンジイソシアネ―ト、イソホロンジイソシア
ネ―ト、ヘキサメチレンジイソシアネ―トなどの、芳香
族系、脂環族系、脂肪族系のジイソシアネ―トなどから
選ばれた少なくとも1種のジイソシアネ―トと、エチレ
ングリコール、エチレンジアミン等の2個以上の活性水
素原子を有する、少なくとも1種の低分子化合物とを所
定のモル比で反応させて得たポリウレタンである。ポリ
ウレタンは、必要に応じて、合成ゴム、ポリエステルエ
ラストマ―などの重合体を添加した重合体組成物として
使用する。Next, the fiber entangled nonwoven fabric is impregnated with an elastic polymer,
Solidifies. The elastic polymer impregnated in the fiber entangled nonwoven fabric is, for example, polyester diol, polyether diol,
At least one kind of average molecular weight of at least one selected from polyetheresterdiols, polycarbonatediols, etc.
Polymer diols of from 0 to 3000, and aromatic, alicyclic and fatty such as 4,4'-diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, etc. At least one diisocyanate selected from group III diisocyanates and at least one low molecular weight compound having two or more active hydrogen atoms such as ethylene glycol and ethylene diamine in a predetermined molar ratio; It is a polyurethane obtained by the reaction. Polyurethane is used as a polymer composition to which a polymer such as synthetic rubber or polyester elastomer is added, if necessary.
【0022】ポリウレタンを主体とした重合体を溶剤に
溶解あるいは分散剤に分散させて重合体液としたのち、
繊維絡合不織布に含浸し、重合体の非溶剤で処理して湿
式凝固し、繊維質基体とする。重合体液には必要に応じ
て着色剤、凝固調節剤、酸化防止剤等の如き添加剤を配
合する。繊維質基体に占めるポリウレタンあるいはポリ
ウレタン組成物の量は、固形分として重量比で10〜5
0%の範囲が好ましい。A polymer mainly composed of polyurethane is dissolved in a solvent or dispersed in a dispersant to form a polymer liquid.
The fiber-entangled nonwoven fabric is impregnated, treated with a polymer non-solvent, and wet-solidified to obtain a fibrous substrate. If necessary, additives such as a colorant, a coagulation regulator, an antioxidant and the like may be added to the polymer liquid. The amount of the polyurethane or the polyurethane composition occupying the fibrous substrate is 10 to 5 in terms of a solid content by weight.
A range of 0% is preferred.
【0023】ポリウレタン重合体を含浸して凝固させた
繊維質基体を、極細繊維成分(B)、細繊維成分(A)
およびポリウレタン重合体の非溶剤であり、かつ極細繊
維発生型繊維(C)の海成分の溶剤または分解剤である
液体で処理する。例えば上記(A)と(B)がナイロン
やポリエチレンテレフタレートあり上記海成分がポリエ
チレンである場合にはトルエンが使用され、また上記
(A)や(B)がナイロンやポリエチレンテレフタレー
トであり上記海成分が易アルカリ分解性ポリエステルで
ある場合には苛性ソーダ水溶液が使用される。この処理
により、極細繊維発生型繊維(C)から海成分ポリマー
が除去されて、極細繊維発生型繊維(C)は、極細繊維
(B)と細繊維(A)からなる繊維束に変成される。こ
のように変成された繊維束の内部には、弾性重合体は実
質的に存在しない。不織布が、溶解除去可能な樹脂によ
って仮固定されている場合には、この処理工程の前また
は後に、この樹脂を溶解除去する方法が用いられる。The fibrous base material impregnated with the polyurethane polymer and solidified is mixed with the ultrafine fiber component (B) and the fine fiber component (A).
And a liquid which is a non-solvent of the polyurethane polymer and a solvent or decomposer of the sea component of the ultrafine fiber-generating fiber (C). For example, when (A) and (B) are nylon or polyethylene terephthalate and the sea component is polyethylene, toluene is used, and (A) or (B) is nylon or polyethylene terephthalate and the sea component is In the case of an easily decomposable polyester, an aqueous solution of caustic soda is used. By this treatment, the sea component polymer is removed from the ultrafine fiber generating fiber (C), and the ultrafine fiber generating fiber (C) is transformed into a fiber bundle composed of the ultrafine fiber (B) and the fine fiber (A). . There is substantially no elastic polymer inside the fiber bundle thus modified. When the nonwoven fabric is temporarily fixed by a resin that can be dissolved and removed, a method of dissolving and removing the resin is used before or after this processing step.
【0024】次に、この基体を必要により厚さ方向に複
数枚にスライスしたのち、その表面の少なくとも一面を
起毛処理して極細繊維を主体とした繊維立毛面を形成さ
せる。繊維立毛面を形成させる方法は、サンドペ―パ―
などによるバフィング等の公知の方法を用いる。Next, this substrate is sliced into a plurality of sheets in the thickness direction as necessary, and at least one surface thereof is raised to form a fiber raised surface mainly composed of ultrafine fibers. The method of forming the fiber napped surface is sandpaper.
A known method such as buffing is used.
【0025】次いで、得られたスエ―ド調繊維質基体を
染色するが、染色は、繊維の種類に応じて酸性染料、金
属錯塩染料、分散染料などを主体とした染料を用いて、
通常の染色方法により染色を行なう。染色したスエ―ド
調繊維質基体は、もみ、柔軟化処理、ブラッシングなど
の仕上げ処理を行なって、スエ―ド調人工皮革の製品が
得られる。Next, the obtained suede-like fibrous base material is dyed. The dyeing is carried out using a dye mainly composed of an acid dye, a metal complex salt dye, a disperse dye or the like according to the type of the fiber.
Dyeing is performed by a usual dyeing method. The dyed suede-like fibrous base material is subjected to finishing treatments such as fir, softening and brushing to obtain a suede-like artificial leather product.
【0026】本発明で得られたスエ―ド調人工皮革は、
外観、風合いが良好で、かつ発色性、耐ピリング性に優
れたものである。The suede-like artificial leather obtained by the present invention comprises:
It has good appearance and texture, and excellent color development and pilling resistance.
【0027】[0027]
【実施例】次に、本発明の実施態様を具体的な実施例で
説明するが、本発明はこれら実施例に限定されるもので
はない。なお、実施例中の部および%は、ことわりのな
い限り重量に関するものである。Next, embodiments of the present invention will be described with reference to specific examples, but the present invention is not limited to these examples. The parts and percentages in the examples relate to weight unless otherwise specified.
【0028】実施例1 6−ナイロン5部[極細繊維(B)]とポリエチレン3
5部とを同一溶融系で溶融したものと、6−ナイロン6
0部[細繊維(A)]を別の系で溶融したものとを、紡
糸口金部で繊維形状を規定して紡糸する方法により、島
本数[細繊維(A)]が50本となるように紡糸し、繊
度10デニールの極細繊維発生型繊維(C)を得た。こ
のとき、繊維(C)の断面を観察すると、極細繊維
(B)の平均本数は約50本であり、細繊維(A)と極
細繊維(B)とはほぼ均一に分散していた。得られた繊
維を3.0倍に延伸し、捲縮を付与した後、繊維長51m
mに切断し、カードで解繊した後、クロスラップウェバ
ーでウェブとした。次に、ニードルパンチにより、目付
650g/m2の繊維絡合不織布とした。これらの工程中
に、繊維は自発の収縮を生じ、約4.5dになってい
た。この繊維絡合不織布にポリエーテル系ポリウレタン
を主体とするポリウレタン組成物13部、ジメチルホル
ムアミド(以下DMFとする)87部の組成液を含浸
し、凝固、水洗の後、極細繊維発生型繊維(C)中のポ
リエチレンをトルエン中で抽出除去して、6−ナイロン
の極細繊維と細繊維からなる束状繊維とポリウレタンと
からなる厚さ約1.3mmの繊維質基体を得た。Example 1 6 parts of 6-nylon [ultrafine fiber (B)] and polyethylene 3
5 parts and 6-nylon 6
A method in which 0 parts [fine fibers (A)] are melted in another system and the fiber shape is defined by a spinneret and spun so that the number of islands [fine fibers (A)] becomes 50. Then, an ultrafine fiber-generating fiber (C) having a fineness of 10 denier was obtained. At this time, when the cross section of the fiber (C) was observed, the average number of the fine fibers (B) was about 50, and the fine fibers (A) and the fine fibers (B) were almost uniformly dispersed. The obtained fiber was stretched 3.0 times and crimped, and the fiber length was 51 m.
After being cut into m and defibrated with a card, the web was formed with a cross wrap webber. Next, a fiber entangled nonwoven fabric having a basis weight of 650 g / m2 was formed by needle punching. During these steps, the fibers spontaneously contracted to about 4.5d. This fiber-entangled nonwoven fabric is impregnated with a composition solution of 13 parts of a polyurethane composition mainly composed of polyether-based polyurethane and 87 parts of dimethylformamide (hereinafter referred to as DMF), and after coagulation and washing with water, the ultrafine fiber generating fiber (C The polyethylene in) was extracted and removed in toluene to obtain a fibrous base material having a thickness of about 1.3 mm and comprising a bundle of 6-nylon ultrafine fibers, bundles of fine fibers, and polyurethane.
【0029】この繊維質基体の繊維束の断面を電子顕微
鏡で観察すると、細繊維(A)の平均繊度は0.054
デニ―ルでかつ繊度のばらつきは殆どなく、極細繊維
(B)はいずれも0.01デニール以下0.001d以上
であり、且つその平均繊度は0.0045デニ―ルであ
った。また極細繊維(B)の繊維長は大部分が5mm以上
であった。この基体の一面をバフィングして厚さ1.2
0mmに厚み合わせを行なった後、他の面をエメリーバフ
機で処理して極細繊維立毛面を形成し、さらにIrgalan
Red 2GL(Chiba Geigy)を用いて、4%owfの濃度で染
色した。仕上げをして得られたスエード調人工皮革の立
毛表面を電子顕微鏡で500倍に拡大して写真に撮り観
察したところ、(A/B)の本数比は8/1であり、発
色性に極めて優れたものであった。さらに外観、風合い
共に極めて良好なものであった。When the cross section of the fiber bundle of the fibrous substrate is observed with an electron microscope, the average fineness of the fine fiber (A) is 0.054.
It was denier and there was almost no variation in fineness, and all the ultrafine fibers (B) were 0.01 denier or less and 0.001 d or more, and the average fineness was 0.0045 denier. The fiber length of the ultrafine fibers (B) was mostly 5 mm or more. One surface of the substrate is buffed to a thickness of 1.2.
After adjusting the thickness to 0 mm, the other surface was treated with an emery buffing machine to form a fine fiber napping surface, and further, Irgalan
Red 2GL (Chiba Geigy) was used to stain at a concentration of 4% owf. The napped surface of the suede-like artificial leather obtained by finishing was magnified 500 times with an electron microscope and photographed and observed. The number ratio of (A / B) was 8/1, and the color development was extremely low. It was excellent. Furthermore, both appearance and texture were extremely good.
【0030】得られたスエード調人工皮革の試験結果を
比較例の結果と共に、表1に示す。The test results of the obtained artificial suede leather are shown in Table 1 together with the results of Comparative Examples.
【0031】[0031]
【表1】 [Table 1]
【0032】比較例−1 海成分としてポリエチレン35部と、島成分として6−
ナイロン65部を別の系で溶融して紡糸口金部で繊維形
状を規定して紡糸する方法により、島本数が50本とな
るように紡糸した繊度10デニールの極細繊維発生型繊
維を使用する以外は、実施例1と同様に処理して染色さ
れたスエード調人工皮革を得た。このスエード調人工皮
革の基体を構成する極細繊維束の横断面を電子顕微鏡で
観察すると、細繊維(A)の平均繊度は0.063デニ
ールであり、本発明で規定する極細繊維(B)に相当す
る繊維は実質的に存在していなかった。得られた製品
は、発色性は良好であったが、耐ピリング性に劣ってい
た。Comparative Example 1 35 parts of polyethylene as the sea component and 6 parts as the island component
By using a method in which 65 parts of nylon is melted in another system and the fiber shape is defined at the spinneret and spun so that the number of islands becomes 50, an ultrafine fiber-generating fiber having a fineness of 10 denier is used. Was treated in the same manner as in Example 1 to obtain a dyed suede-like artificial leather. When the cross section of the ultrafine fiber bundle constituting the base of the suede-like artificial leather is observed with an electron microscope, the average fineness of the fine fiber (A) is 0.063 denier, and the fine fiber (B) specified in the present invention has a fineness of 0.063 denier. The corresponding fiber was substantially absent. The obtained product had good coloring properties, but poor pilling resistance.
【0033】比較例−2 海成分として6−ナイロン15部[極細繊維(B)]と
ポリエチレン50部とを同一溶融系で溶融したものと、
島成分として6−ナイロン35部[細繊維(A)]を別
の系で溶融したものとを紡糸口金部で繊維形状を規定し
て紡糸する方法により、細繊維(A)の本数が50本と
なるように紡糸した繊度10デニ―ルの極細繊維発生型
繊維を使用する以外は、実施例1と同様に処理して染色
されたスエード調人工皮革を得た。このスエード調人工
皮革の基体を構成する極細繊維束の断面を電子顕微鏡で
観察すると、細繊維(A)の平均繊度は0.034デニ
ールで繊度のばらつきは殆どなく、極細繊維(B)はい
ずれも0.007デニール以下0.001以上でその平均
繊度は0.004デニールであった。また、極細繊維発
生型繊維の断面を電子顕微鏡で観察すると、極細繊維
(B)の本数は約180本であった。得られたスエード
調人工皮革の立毛表面を電子顕微鏡で500倍に拡大し
て写真に撮り観察したところ、(A/B)の本数比は
2.2/1であり、発色性で大きく劣るものであった。
また、耐ピリング性の点に関しては問題なかった。Comparative Example 2 15 parts of 6-nylon [ultrafine fiber (B)] and 50 parts of polyethylene were melted in the same melting system as a sea component,
A method in which 35 parts of 6-nylon [fine fiber (A)] as an island component was melted in another system and the fiber shape was defined by a spinneret and spun, and the number of fine fibers (A) was 50. A dyed suede-like artificial leather was obtained by treating in the same manner as in Example 1 except that an ultrafine fiber-generating fiber having a fineness of 10 denier was used. When the cross section of the ultrafine fiber bundle constituting the base of this suede-like artificial leather is observed with an electron microscope, the average fineness of the fine fiber (A) is 0.034 denier, there is almost no variation in fineness, and the fine fiber (B) Also, the average fineness was 0.004 denier or less and 0.007 denier or less. When the cross section of the ultrafine fiber-generating fiber was observed with an electron microscope, the number of the ultrafine fibers (B) was about 180. The napped surface of the obtained suede-like artificial leather was magnified 500 times with an electron microscope and photographed and observed. The number ratio of (A / B) was 2.2 / 1, and the color development was significantly poor. Met.
There was no problem with respect to pilling resistance.
【0034】実施例−2 ポリエチレンテレフタレ―ト5部[極細繊維(B)]と
ポリエチレン30部とを同一溶融系で溶融したものと、
ポリエチレンテレフタレ―ト65部[細繊維(A)]を
別の系で溶融したものとを紡糸口金部で繊維形状を規定
して紡糸する方法により、細繊維(A)の本数が50本
となるように紡糸して繊度10デニ―ルの極細繊維発生
型繊維を得た。このとき、繊維の断面を観察すると、極
細繊維(B)の平均本数は約50本であり、細繊維
(A)と極細繊維(B)とはほぼ均一に分散していた。
得られた繊維を3.0倍に延伸し、捲縮を付与した後、
繊維長51mmに切断しカ―ドで解繊した後クロスラップ
ウェバ―でウェブとした。このウェブをニ―ドルパンチ
処理後、熱水中で面積で40%収縮させ、目付820g
/m2の繊維絡合不織布とした。この繊維絡合不織布にポ
リエ―テル系ポリウレタンを主体とするポリウレタン組
成物13部、DMF87部の組成液を含浸し、凝固、水
洗の後、極細繊維発生型繊維中のポリエチレンをトルエ
ン中で抽出除去して、ポリエチレンテレフタレ―ト極細
繊維束状繊維とポリウレタンとからなる厚さ1.3mmの
繊維質基体を得た。Example 2 5 parts of polyethylene terephthalate [ultrafine fiber (B)] and 30 parts of polyethylene were melted in the same melting system.
A method in which 65 parts of polyethylene terephthalate [fine fiber (A)] is melted by another system and the fiber shape is defined by a spinneret and then spun to reduce the number of fine fibers (A) to 50 The fiber was spun so as to obtain an ultrafine fiber-generating fiber having a fineness of 10 denier. At this time, when the cross section of the fiber was observed, the average number of the fine fibers (B) was about 50, and the fine fibers (A) and the fine fibers (B) were almost uniformly dispersed.
After stretching the obtained fiber to 3.0 times and imparting crimp,
The fiber was cut into a fiber length of 51 mm, defibrated with a card, and formed into a web with a cross wrap weber. After the needle punching, the web was shrunk in hot water by 40% in area, and the basis weight was 820 g.
/ M2 of fiber entangled nonwoven fabric. This fiber-entangled nonwoven fabric is impregnated with 13 parts of a polyurethane composition mainly composed of polyether-based polyurethane and 87 parts of DMF, and after coagulation and washing with water, the polyethylene in the ultrafine fiber-generating fibers is extracted and removed in toluene. Thus, a 1.3 mm-thick fibrous base material comprising polyethylene terephthalate ultrafine fiber bundle fibers and polyurethane was obtained.
【0035】この繊維質基体の極細繊維束の断面を電子
顕微鏡で観察すると、細繊維(A)の平均繊度は0.0
60デニ―ルで繊度のばらつきは殆どなく、極細繊維
(B)はいずれも0.01デニール以下0.0015d以
上の繊維からなり、その平均繊度は0.005デニ―ル
であり、繊維束内部にはポリウレタンは含まれていなか
った。また極細繊維(B)の繊維長は大部分が5mm以上
であった。この基体の一面をバフィングして厚さ1.2
0mmに厚み合わせを行なった後、他の面をエメリーバフ
機で処理して極細繊維立毛面を形成し、さらにResolin
Blue 2BRSを用いて2%owfの濃度で染色した。ポリ
ウレタンに付着した染料を還元洗浄し、仕上げをおこな
った。得られたスエード調人工皮革の立毛表面を電子顕
微鏡で500倍に拡大して写真に撮り観察したところ、
(A/B)の本数比は8/1であり、発色性に極めて優
れたものであった。さらに、外観、風合い共に極めて良
好なものであり、耐ピリング性においても優れていた。When the cross section of the ultrafine fiber bundle of the fibrous base material is observed with an electron microscope, the average fineness of the fine fiber (A) is 0.0.
There is almost no variation in the fineness at 60 deniers, and the ultrafine fibers (B) are made of fibers of 0.01 denier or less and 0.0015 d or more, and the average fineness is 0.005 denier and the inside of the fiber bundle is Did not contain polyurethane. The fiber length of the ultrafine fibers (B) was mostly 5 mm or more. One surface of the substrate is buffed to a thickness of 1.2.
After adjusting the thickness to 0 mm, the other surface is treated with an emery buffing machine to form a fine fiber nap surface, and furthermore, Resolin
Staining was performed at a concentration of 2% owf using Blue 2BRS. The dye adhering to the polyurethane was washed by reduction and finished. When the raised surface of the obtained suede-like artificial leather was magnified 500 times with an electron microscope and photographed and observed,
The number ratio of (A / B) was 8/1, and the color development was extremely excellent. Furthermore, the appearance and texture were extremely good, and the pilling resistance was also excellent.
【0036】比較例−3 海成分としてポリプロピレン5部[極細繊維(B)]と
ポリウレタン35部とを同一溶融系で溶融したものと、
島成分として6−ナイロン60部[細繊維(A)]を別
の系で溶融したものとを紡糸口金部で繊維形状を規定し
て紡糸する方法により、細繊維(A)の本数が50本と
なるように紡糸して繊度10デニ―ルの極細繊維発生型
繊維を得た。このとき、繊維のある断面を観察すると、
極細繊維(B)の平均本数は約100本であり、細繊維
(A)と極細繊維(B)とはほぼ均一に分散していた。
得られた繊維を3.0倍に延伸し、捲縮を付与した後、
繊維長51mmに切断し、カ―ドで解繊した後クロスラッ
プウェバ―でウェブとした。次に、ニ―ドルパンチによ
り目付600g/m2の繊維絡合不織布とした。この繊維
絡合不織布にポリエ―テル系ポリウレタンを主体とする
ポリウレタン組成物4部、DMF96部の組成液を含浸
し、同時に極細繊維発生型繊維中のポリウレタンを溶解
させた後、凝固、水洗して厚さ1.3mmの繊維質基体を
得た。Comparative Example 3 Five parts of polypropylene (ultrafine fiber (B)) and 35 parts of polyurethane were melted in the same melting system as a sea component,
A method in which 60 parts of 6-nylon [fine fiber (A)] as an island component is melted by another system and the fiber shape is defined by a spinneret and then spun so that the number of fine fibers (A) is 50 The fiber was spun so as to obtain an ultrafine fiber generating fiber having a fineness of 10 denier. At this time, when observing a cross section with a fiber,
The average number of the ultrafine fibers (B) was about 100, and the fine fibers (A) and the ultrafine fibers (B) were almost uniformly dispersed.
After stretching the obtained fiber to 3.0 times and imparting crimp,
The fiber was cut to a fiber length of 51 mm, defibrated with a card, and formed into a web with a cross wrap webber. Next, a fiber entangled nonwoven fabric having a basis weight of 600 g / m 2 was formed by a needle punch. This fiber entangled nonwoven fabric is impregnated with a composition solution of 4 parts of a polyurethane composition mainly composed of polyether-based polyurethane and 96 parts of DMF, and simultaneously dissolves the polyurethane in the microfiber-generating fiber, and then coagulates and rinses with water. A 1.3 mm thick fibrous substrate was obtained.
【0037】この繊維質基体の極細繊維束の断面を電子
顕微鏡で観察すると、極細繊維(A)の平均繊度は0.
058デニ―ルで繊度のばらつきは殆どなく、極細繊維
(B)の平均繊度は0.003デニ―ルであり、繊維束
内の極細繊維間にポリウレタンが多孔質状に存在してい
た。この繊維質基体を実施例1と同様に処理して染色さ
れたスエード調人工皮革に仕上げた。得られた製品は、
発色性は良好であったが、極細繊維束の極細繊維同士が
ポリウレタンで固定されているため風合いがかたく、ま
た外観に関しても今一歩であった。When the cross section of the ultrafine fiber bundle of the fibrous base material is observed with an electron microscope, the average fineness of the ultrafine fiber (A) is 0.1.
At 058 denier, there was almost no variation in fineness. The average fineness of the ultrafine fibers (B) was 0.003 denier, and the polyurethane was porous between the ultrafine fibers in the fiber bundle. This fibrous substrate was treated in the same manner as in Example 1 to obtain a dyed suede-like artificial leather. The obtained product is
Although the coloring property was good, the texture was hard because the ultrafine fibers of the ultrafine fiber bundle were fixed with polyurethane, and the appearance was just one step away.
【0038】[0038]
【発明の効果】本発明で得られたスエード調人工皮革
は、外観、風合いが良好で、かつ発色性と耐ピリング性
に優れたものであり、衣料用、靴、袋物用、手袋用とし
て利用できる。Industrial Applicability The suede-like artificial leather obtained by the present invention has a good appearance and texture, and is excellent in coloring and pilling resistance, and is used for clothing, shoes, bags, and gloves. it can.
【図1】本発明の極細繊維発生型繊維の断面模式図であ
る。FIG. 1 is a schematic cross-sectional view of a microfiber-generating fiber of the present invention.
1 海成分 2 島成分(細繊維A) 3 島成分(極細繊維B) 1 Sea component 2 Island component (fine fiber A) 3 Island component (ultrafine fiber B)
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) D06N 3/00 - 3/18 B32B 5/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) D06N 3/00-3/18 B32B 5/02
Claims (2)
面に該繊維束からなる立毛が存在しておりかつ染色され
ているスエード調人工皮革において、該基体を構成して
いる繊維束が、0.02〜0.2デニールの細繊維(A)
と、細繊維(A)の平均繊度の1/5以下でかつ0.0
2デニール未満の繊度の極細繊維(B)とからなり、そ
の本数の比(A/B)が2/1〜2/3であり、かつ繊
維束内部には実質的に弾性重合体が含有されておらず、
さらに該立毛を構成している繊維中のAの本数とBの本
数との比(A/B)が3/1以上であることを特徴とす
るスエード調人工皮革。1. A suede-like artificial leather in which naps made of a fiber bundle are present on the surface of a base made of a fiber bundle and an elastic polymer and are dyed. , 0.02 to 0.2 denier fine fiber (A)
And not more than 1/5 of the average fineness of the fine fiber (A) and 0.0
It consists of ultrafine fibers (B) having a fineness of less than 2 denier, the number ratio (A / B) is 2/1 to 2/3, and the fiber bundle contains substantially an elastic polymer. Not
Suede-like artificial leather, wherein the ratio (A / B) of the number of A to the number of B in the fibers constituting the nap is 3/1 or more.
面に該繊維束からなる立毛が存在しておりかつ染色され
ているスエード調人工皮革を製造する方法であって、以
下の工程(a)〜(f) (a)溶解または分解除去することのできる海成分ポリ
マー中に、島成分として繊度0.02〜0.2デニ―ルの
細繊維(A)形成成分と細繊維(A)の平均繊度の1/
5以下でかつ0.02デニール未満の繊度の極細繊維
(B)形成成分とが繊維横断面において分散しており、
その本数の比(A/B)が2/1〜2/3である、細繊
維(A)及び極細繊維(B)からなる繊維束に変成し得
る、細繊維及び極細繊維発生型繊維(C)を製造する工
程、(b)該繊維(C)からなる絡合不織布を製造する
工程、(c)該絡合不織布に弾性重合体液を含浸し湿式
凝固する工程、(d)該繊維(C)を細繊維(A)およ
び極細繊維(B)からなる繊維束に変成する工程、
(e)少なくとも一面に立毛を形成する工程、(f)得
られた繊維立毛スエ―ドを染色する工程、を順次行うこ
とを特徴とするスエード調人工皮革の製造方法。2. A method for producing a suede-like artificial leather in which naps made of a fiber bundle are present and dyed on the surface of a substrate made of a fiber bundle and an elastic polymer, the method comprising the following steps: a) to (f) (a) Fine fiber (A) forming component having fineness of 0.02 to 0.2 denier and fine fiber (A) as island component in sea component polymer which can be dissolved or decomposed and removed. 1) of average fineness
The ultrafine fiber (B) forming component having a fineness of 5 or less and less than 0.02 denier is dispersed in the fiber cross section,
Fine fibers and ultrafine fiber-generating fibers (C) which can be transformed into a fiber bundle composed of fine fibers (A) and ultrafine fibers (B) whose ratio (A / B) is 2/1 to 2/3 ), (B) a step of producing an entangled non-woven fabric comprising the fiber (C), (c) a step of impregnating the entangled non-woven fabric with an elastic polymer liquid and wet-coagulating the fiber (C). ) To a fiber bundle composed of fine fibers (A) and ultrafine fibers (B),
(E) a step of forming nap on at least one surface, and (f) a step of dyeing the obtained staple fiber suede, which is sequentially performed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP06247535A JP3109793B2 (en) | 1993-10-29 | 1994-10-13 | Suede-like artificial leather |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27178993 | 1993-10-29 | ||
JP5-271789 | 1993-10-29 | ||
JP06247535A JP3109793B2 (en) | 1993-10-29 | 1994-10-13 | Suede-like artificial leather |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07173778A JPH07173778A (en) | 1995-07-11 |
JP3109793B2 true JP3109793B2 (en) | 2000-11-20 |
Family
ID=26538315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP06247535A Expired - Fee Related JP3109793B2 (en) | 1993-10-29 | 1994-10-13 | Suede-like artificial leather |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3109793B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI666359B (en) * | 2014-03-31 | 2019-07-21 | 日商東麗股份有限公司 | Dyed artificial leather and manufacturing method thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100358361B1 (en) * | 2000-10-30 | 2002-10-25 | 주식회사 효성 | Method for manufacturing suede-like circular knitted fabric and the suede-like circular knitted fabric |
KR101317055B1 (en) | 2005-12-14 | 2013-10-18 | 가부시키가이샤 구라레 | Base for synthetic leather and synthetic leathers made by using the same |
EP2292821B1 (en) | 2008-06-25 | 2017-02-15 | Kuraray Co., Ltd. | Base material for artificial leather and process for producing the same |
CA2801077C (en) * | 2010-06-08 | 2018-01-09 | Dow Global Technologies Llc | Partially impregnated, fiber reinforced thermoplastic strength member |
-
1994
- 1994-10-13 JP JP06247535A patent/JP3109793B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI666359B (en) * | 2014-03-31 | 2019-07-21 | 日商東麗股份有限公司 | Dyed artificial leather and manufacturing method thereof |
US10435838B2 (en) | 2014-03-31 | 2019-10-08 | Toray Industries, Inc. | Dyed artificial leather and a production method therefor |
Also Published As
Publication number | Publication date |
---|---|
JPH07173778A (en) | 1995-07-11 |
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