KR20130035369A - Artificial leather and method of manufacturing the same - Google Patents

Artificial leather and method of manufacturing the same Download PDF

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Publication number
KR20130035369A
KR20130035369A KR1020110099610A KR20110099610A KR20130035369A KR 20130035369 A KR20130035369 A KR 20130035369A KR 1020110099610 A KR1020110099610 A KR 1020110099610A KR 20110099610 A KR20110099610 A KR 20110099610A KR 20130035369 A KR20130035369 A KR 20130035369A
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South Korea
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artificial leather
nonwoven fabric
microfibers
polymer
manufacturing
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KR1020110099610A
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Korean (ko)
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박양수
이응민
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코오롱인더스트리 주식회사
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Priority to KR1020110099610A priority Critical patent/KR20130035369A/en
Publication of KR20130035369A publication Critical patent/KR20130035369A/en

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C11/00—Teasing, napping or otherwise roughening or raising pile of textile fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
    • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
    • D06N3/0034—Polyamide fibres
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0075—Napping, teasing, raising or abrading of the resin coating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/10—Properties of the materials having mechanical properties
    • D06N2209/108—Slipping, anti-blocking, low friction
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/26—Vehicles, transportation

Abstract

PURPOSE: A method for fabricating artificial leather is provided to ensure smooth surface property due to long piloerection formed on the surface of the artificial leather, and to improve exterior. CONSTITUTION: Artificial leather contains a polymer elastomer which is immersed in a non-woven fabric fabricated by interlacing microfibers of 0.001-0.3 deniers. 55-80 wt% of the microfibers are distributed between the width direction center and the surface of the artificial leather. The microfiber contains polyamide resin.

Description

인공피혁 및 그의 제조방법{Artificial leather and method of manufacturing the same}Artificial leather and method of manufacturing the same

본 발명은 인공피혁 및 그의 제조방법에 관한 것으로서, 보다 구체적으로 인공피혁의 표면에 형성된 입모(立毛)의 길이가 길어 인공피력내 고분자 탄성체층이 표면으로 드러나는 것을 효과적으로 방지하여 매끄러운 표면특성과 보다 정밀하고 매끄러운 외관을 발현하는 인공피혁 및 그의 제조방법에 관한 것이다.
The present invention relates to artificial leather and a method of manufacturing the same, and more specifically, the length of the hairs formed on the surface of the artificial leather is long, effectively preventing the polymer elastic layer in the artificial skin from appearing on the surface, thereby providing a smooth surface property and more precise precision. The present invention relates to an artificial leather and a method of manufacturing the same.

극세사들이 3차원적으로 교락되어 있는 부직포와 상기 부직포내에 함침된 고분자 탄성체로 이루어진 인공피혁은 촉감, 라이팅 이펙트, 드레이프성 등이 우수하고 천연피혁과 유사한 부드러운 질감과 독특한 외관을 갖고있어서 자동차, 비행기, 기차, 선박 등의 운송수단의 시트(Seat) 표피재나 인테리어 소재 등으로 널리 사용되고 있다.Artificial leather is composed of a nonwoven fabric in which microfibers are intertwined three-dimensionally and a polymer elastomer impregnated in the nonwoven fabric. The artificial leather has excellent feel, lighting effect, and drape, and has a soft texture and unique appearance similar to that of natural leather. It is widely used as a seat skin material or an interior material of a vehicle such as a train or a ship.

또한 최근 인공피혁의 부드러운 외관 구조는 정밀하고 광택을 요구하는 제품의 외관을 보다 정밀하고 매끄럽게 만들 수 있는 구조를 갖고 있어 1990년대를 전후하여 채용되기 시작하여 여러 가지 소재의 가공용으로 사용하고 있다. 그러나 급격한 산업의 발전과 정밀성의 향상등이 최근 요구되면서 기존의 인공피혁의 외관이 갖고 있는 특징으로는 충분한 가공후 특성을 발휘하는데 어려움을 겪고 있다. 이러한 가공상의 어려운 점은 인공피혁의 내부 구조를 차지하고 있는 고분자 탄성체가 내부에서 표면으로 상당량 드러나면서 고분자 탄성체에 의해서 가공상의 문제를 일으키는 원인이 되기도 하였다. 이러한 문제를 극복하기 위해서는 표면의 입모(立毛)량과 입모(立毛) 길이를 증대시켜서 내부의 고분자 탄성체가 외부로 드러나지 않게 그 빈도를 매우 줄여 주어야 할 필요가 있다. 그렇게 하기 위해서는 균일하면서도 길이가 긴 입모(立毛)의 형성을 할 수 있는 제조방법이 필요하고 기존의 제조방법으로는 입모(立毛)의 길이를 길면서 균일하게 하기 어려운 것이 문제가 되고 있었다.In addition, recently, the soft appearance structure of artificial leather has a structure that can make the appearance of products requiring precision and gloss more precise and smooth, and has been adopted since the 1990s and is used for the processing of various materials. However, due to the recent demand for rapid industrial development and the improvement of precision, the characteristics of the existing artificial leather are having difficulty in exhibiting sufficient post-processing characteristics. The difficulty in processing is that the polymer elastomer, which occupies the internal structure of artificial leather, is exposed from the inside to the surface, causing the processing problem by the polymer elastomer. In order to overcome this problem, it is necessary to increase the amount of hair on the surface and the length of the hair on the surface so that the frequency of the polymer elastic body is not reduced to the outside. In order to do so, a manufacturing method capable of forming uniform and long hairs is required, and it has become a problem that conventional manufacturing methods are difficult to make the hairs long and uniform.

이러한 내부의 고분자 탄성체가 표면에 드러나지 않게 하는 방법으로 대한민국 공개특허 제2005-0084795호, 대한민국 공개특허 제2004-0029264호 등에서는 탄성체를 카본블렉 등이 첨가된 것을 사용하는 방법과 극세섬유 내에 카본블랙 또는 유기계 안료를 첨가하는 원착방식에 대한 기술을 제시하고 있으나 이러한 방법으로는 외관상으로 고분자 탄성체가 덜 드러나게 하기는 하지만 실질적으로 내부에서 표면으로 드러나지 않는 것이 아닌 색상의 차이가 들 더러나게 하는 방법으로 본 발명이 이루고자하는 실질적인 내부의 고분자 탄성체가 표면에 드러나지 않는 것과는 차이가 있다.
As a method of preventing the internal polymer elastomer from being exposed to the surface, Korean Patent Laid-Open Publication No. 2005-0084795, Korean Patent Publication No. 2004-0029264 and the like use a method in which an carbon is added to an elastic member and carbon black in an ultrafine fiber. Or, a technique for the original method of adding an organic pigment is proposed, but in this method, although the polymer elastomer is less visible in appearance, it is a method in which the difference in color is not found in the interior but is actually not exposed to the surface. There is a difference from the fact that the substantial internal polymer elastomer is not exposed on the surface.

본 발명의 과제는 인공피혁의 표면에 형성된 입모(立毛)의 길이가 길어 인공피혁내 고분자 탄성체가 표면으로 드러나는 것을 방지하여 매끄러운 표면특성과 우수한 외관을 구비한 인공피혁을 제공하는 것이다.An object of the present invention is to provide an artificial leather having a smooth surface characteristics and excellent appearance by preventing the polymer elastic body in the artificial leather is exposed to the surface by the length of the hair (立 毛) formed on the surface of the artificial leather.

또 다른 본 발명의 과제는 상기와 같이 매끄러운 표면특성과 우수한 외관을 구비하는 인공피혁의 제조방법을 제공하는 것이다.
Another object of the present invention is to provide a method for producing artificial leather having a smooth surface characteristics and excellent appearance as described above.

이와 같은 과제를 달성하기 위해서, 본 발명에서는 단사섬도가 0.001~0.3 데니어인 극세섬유들이 서로 교락된 부직포 내에 고분자 탄성체가 함침되어 있고, 인공피혁 내에 포함된 상기 극세섬유의 전체중량을 기준으로 55~80 중량%의 극세섬유가 인공피혁의 두께방향 중심부로부터 인공피혁의 표면 사이에 위치하는 것을 특징으로 하는 인공피혁을 제공한다.In order to achieve the above object, in the present invention, a polymer elastic body is impregnated in a nonwoven fabric in which microfibers having a single yarn fineness of 0.001 to 0.3 denier are intertwined with each other, and 55 ~ based on the total weight of the microfibers included in artificial leather. It provides an artificial leather, characterized in that 80% by weight of the ultrafine fibers are located between the thickness direction of the artificial leather from the surface of the artificial leather.

또한, 본 발명은 단사섬도가 0.001~0.3 데니어인 극세섬유들이 서로 교락된 부직포에 고분자 탄성체를 침지한 다음 응고-수세-기모하여 인공피혁을 제조할때, 상기 부직포에 고분자 탄성체를 침지하기 이전에 상기 부직포를 폴리비닐알콜 수용액으로 패딩처리한 다음 패딩처리된 부직포의 일면에 폴리비닐알콜 수지액을 코팅하여 인공피혁을 제조한다.
In addition, the present invention, when the microfibers having a single yarn fineness of 0.001 ~ 0.3 denier is immersed in the nonwoven fabric entangled with each other and then coagulation-washing-napping to prepare artificial leather, before immersing the polymer elastomer in the nonwoven fabric The nonwoven fabric is padded with an aqueous polyvinyl alcohol solution and then coated with a polyvinyl alcohol resin solution on one side of the padded nonwoven fabric to prepare artificial leather.

본 발명은 인공피혁의 표면에 형성된 입모(立毛)의 길이가 길어서 인공피혁내 고분자 탄성체층이 표면으로 드러나는 것을 효과적으로 방지한다.The present invention has a long length of the hair formed on the surface of the artificial leather effectively prevents the polymer elastic layer in the artificial leather exposed to the surface.

그로인해, 본 발명의 인공피혁은 매끄러운 표면특성과 우수한 외관을 발현하여 운송용 시트의 표피재나 인테리어 소재 등으로 유용하다.
Therefore, the artificial leather of the present invention exhibits smooth surface characteristics and excellent appearance and is useful as a skin material or interior material of a transport sheet.

이하, 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

먼저, 본 발명에 따른 인공피혁은 통상의 인공피혁과 같이 단사섬도가 0.001~0.3 데니어인 극세섬유들이 서로 교락된 부직포내에 고분자 탄성체가 함침된 구조를 갖는다.First, the artificial leather according to the present invention has a structure in which a polymer elastic body is impregnated in a nonwoven fabric in which microfibers having a single yarn fineness of 0.001 to 0.3 denier are entangled with each other, as in general artificial leather.

단사섬도가 0.001데니어 미만인 경우에는 인공피혁의 제조과정이 매우 곤란해 지고 인공피혁의 원면제조 과정이 매우 곤란하게 된다. 또한 0.3데니어를 초과하면 인공피혁의 기본적인 특징인 촉감이 사라지게 된다.If the single yarn fineness is less than 0.001 denier, the manufacturing process of artificial leather becomes very difficult, and the manufacturing process of cotton is very difficult. If it exceeds 0.3 denier, the touch, which is a basic feature of artificial leather, disappears.

본 발명에 따른 인공피혁은 인공피혁 내에 포함된 상기 극세섬유의 전체중량을 기준으로 55~80 중량%의 극세섬유가 인공피혁의 두께방향 중심부로부터 인공피혁의 표면 사이에 위치하는 것을 특징으로 한다.Artificial leather according to the present invention is characterized in that 55 to 80% by weight of the ultrafine fibers based on the total weight of the ultrafine fibers contained in the artificial leather is located between the surface of the artificial leather from the center of the thickness direction of the artificial leather.

또한, 본 발명에 따른 인공피혁은 상기 인공피혁의 표면 및 이면 각각에는 입모가 형성되어 있으며, 인공피혁의 표면에 형성된 입모가 인공피혁의 이면에 형성된 입모보다 길이가 상대적으로 더 긴 것을 특징으로 한다In addition, the artificial leather according to the present invention is characterized in that the hair is formed on each of the surface and the back surface of the artificial leather, the length of the hair formed on the surface of the artificial leather is relatively longer than the hair formed on the back of the artificial leather.

상기 극세섬유는 폴리아미드 수지인 것이 바람직하고, 상기 고분자 탄성체는 폴리우레탄 수지 또는 폴리우레아 수지 등이다.It is preferable that the said ultrafine fiber is a polyamide resin, and the said polymeric elastic body is a polyurethane resin, a polyurea resin, etc.

본 발명은 상기와 같이 인공피혁에 포함된 극세섬유중 55~80 중량%의 극세섬유가 인공피혁의 두께방향 중심부로부터 인공피혁의 표면 사이(이하 "상부층"이라고 한다)에 위치하고, 표면에 형성된 입모(立毛)의 길이가 길어서 인공피혁내 고분자 탄성체가 표면으로 드러나는 것을 효과적으로 방지할 수 있다.In the present invention, 55 to 80% by weight of the ultrafine fibers included in the artificial leather is located between the surface of the artificial leather (hereinafter referred to as the "upper layer") from the center of the thickness direction of the artificial leather, and formed on the surface. The long length of the hair can effectively prevent the surface of the polymer elastic body in artificial leather.

본 발명에 따른 인공피혁의 제조방법은, 단사섬도가 0.001~0.3 데니어인 극세섬유들이 서로 교락된 부직포에 고분자 탄성체를 침지한 다음 응고-수세-기모하여 인공피혁을 제조할때, 상기 부직포에 고분자 탄성체를 침지하기 이전에 상기 부직포를 폴리비닐알콜 수용액으로 패딩처리한 다음 패딩처리된 부직포의 일면에 폴리비닐알콜 수지액을 코팅하는 것을 특징으로 한다.In the manufacturing method of artificial leather according to the present invention, when microfibers having a single yarn fineness of 0.001 to 0.3 denier are immersed in a nonwoven fabric interwoven with a polymer elastic body and then coagulated-washed-raised to prepare artificial leather, the polymer in the nonwoven fabric The nonwoven fabric is padded with an aqueous polyvinyl alcohol solution before immersing the elastic body, and then a polyvinyl alcohol resin solution is coated on one surface of the padded nonwoven fabric.

코팅에 사용되는 상기 폴리비닐알콜 수지액내 고형분(폴리비닐알콜)의 농도는 12~40%인 것이 바람직하고, 패딩처리된 부직포의 일면에 폴리비닐알콜 수지액을 코팅하는 방식으로는 나이프 코팅 방식을 채택하는 것이 바람직하다.The concentration of the solid content (polyvinyl alcohol) in the polyvinyl alcohol resin liquid used for the coating is preferably 12 to 40%, and the method of coating the polyvinyl alcohol resin liquid on one side of the padded nonwoven fabric using a knife coating method. It is preferable to adopt.

이하, 본 발명에 따라 인공피혁을 제조하는 방법들중 일례를 구체적으로 설명한다.Hereinafter, one example of methods for manufacturing artificial leather according to the present invention will be described in detail.

먼저, 단사섬도가 0.001~0.3 데니어인 극세섬유 및 상기 극세섬유들이 서로 교락된 부직포를 제조하는 방법을 살펴본다.First, a method of manufacturing a microfiber having a single yarn fineness of 0.001 to 0.3 denier and a nonwoven fabric in which the microfibers are interlaced with each other will be described.

상기 극세섬유는 복합방사공정을 통해 해도형 섬유를 제조하고, 제조된 해도형 섬유를 이용하여 부직포를 제조한 후, 해도형 섬유내 해성분을 제거하여 섬유를 극세화하는 방법으로 극세섬유 및 이들이 교락된 부직포를 제조한다.The microfibers are manufactured by preparing a island-in-the-sea fiber through a composite spinning process, and preparing a nonwoven fabric using the prepared island-in-the-sea fiber, and then removing the seaweeds in the island-in-the-sea fiber to make the fibers ultra-fine. Prepare entangled nonwovens.

상기 해도형 섬유는 용제에 용해되는 특성이 서로 상이한 제1폴리머 및 제2폴리머로 이루어진다.The island-in-the-sea fibers consist of a first polymer and a second polymer that are different from each other in a solvent.

상기 제1폴리머는 용제에 용해되어 용출되는 해(海)성분으로서, 공중합 폴리에스테르, 폴리스티렌 또는 폴리에틸렌 등으로 이루어질 수 있으며, 바람직하게는 알칼리 용제에 대한 용해성이 우수한 공중합 폴리에스테르로 이루어진다.The first polymer is a sea component dissolved in a solvent and eluted. The first polymer may be made of copolyester, polystyrene, or polyethylene, and is preferably made of copolyester having excellent solubility in an alkaline solvent.

상기 공중합 폴리에스테르는, 주성분인 폴리에틸렌 테레프탈레이트에 폴리에틸렌글리콜, 폴리프로필렌글리콜, 1-4-사이클로헥산 디카르복실산, 1-4-사이클로헥산디메탄올, 1-4-사이클로헥산디카르복실레이트, 2-2-디메틸-1,3-프로판디올, 2-2-디메틸-1,4-부탄디올, 2,2,4-트리메틸-1,3-프로판디올, 아디프산, 금속 설포네이트 함유 에스테르 단위 또는 이들의 혼합물이 공중합된 것을 이용할 수 있으나, 반드시 이에 한정되는 것은 아니다.The copolyester is polyethylene glycol, polypropylene glycol, 1-4-cyclohexane dicarboxylic acid, 1-4-cyclohexanedimethanol, 1-4-cyclohexanedicarboxylate, in polyethylene terephthalate as a main component, 2-2-dimethyl-1,3-propanediol, 2-2-dimethyl-1,4-butanediol, 2,2,4-trimethyl-1,3-propanediol, adipic acid, metal sulfonate-containing ester unit Or a mixture of these may be used, but is not necessarily limited thereto.

상기 제2폴리머는 용제에 용이하게 용해되지 않고 잔존하는 도(島)성분으로서, 폴리아미드로 이루어질 수 있다.The second polymer may be made of polyamide as an island component remaining without being easily dissolved in a solvent.

본 발명에 따른 해도형 섬유는, 추후 공정에서 해성분인 제1폴리머를 용제에 용해시켜 용출시킴으로써 도성분인 제2폴리머만이 잔존하여 극세섬유를 형성하게 된다. 따라서, 원하는 극세섬유를 얻기 위해서는 해성분인 제1폴리머와 도성분인 제2폴리머의 함량 등을 적절히 조절할 필요가 있다.The island-in-the-sea fiber according to the present invention dissolves and elutes the first polymer, which is a sea component, in a subsequent step, so that only the second polymer, which is an island component, remains to form ultrafine fibers. Therefore, in order to obtain desired microfine fibers, it is necessary to appropriately adjust the content of the first polymer as the sea component and the second polymer as the island component.

구체적으로는, 해도형 섬유 내에서, 상기 해성분인 제1폴리머는 10 ~ 60중량%로 포함되고, 상기 도성분인 제2폴리머는 40 ~ 90중량%로 포함되는 것이 바람직하다. 상기 해성분인 제1폴리머가 10중량% 미만으로 포함될 경우 도성분인 제2폴리머의 함량이 증가되어 극세섬유 형성이 불가능할 수 있으며, 해성분인 제1폴리머가 60중량%를 초과하여 포함될 경우는 용출하여 제거되는 제1폴리머의 양이 증가되어 제조단가가 증가되기 때문이다. 또한, 해도형 섬유의 단면에서, 상기 도성분인 제2폴리머는 10개 이상이 서로 분리되면서 배열되며, 해성분인 제1폴리머가 용출된 이후에 도성분인 제2폴리머 각각의 섬도는 0.3 데니어 이하인 것이 극세섬유화를 위해 바람직하고, 섬유의 최소한의 강도를 유지하기 위해서는 0.001 데니어 이상이 되는 것이 바람직하다.Specifically, in the island-in-the-sea fiber, it is preferable that the first polymer as the sea component is included in 10 to 60% by weight, and the second polymer as the island component is included in 40 to 90% by weight. When the first polymer of the sea component is included in less than 10% by weight, the content of the second polymer, which is a island component, may be increased so that the formation of microfine fibers may be impossible. This is because the amount of the first polymer that is eluted and removed is increased to increase the manufacturing cost. In addition, in the cross-sectional view of the island-in-the-sea fibers, the second polymer as the island component is arranged while being separated from each other, and after each first polymer as the sea component is eluted, the fineness of each of the island polymer is 0.3 denier. It is preferable for microfiberization to be below, and to be 0.001 denier or more in order to maintain the minimum strength of a fiber.

복합방사를 통해 제조된 해도형 필라멘트를 집속한 토우(Tow)를 만들고 연신한다. 이어서, 상기 연신한 토우에 크림프(crimp)를 형성하고, 소정의 온도로 가열하여 열고정(heat set)한다. 이어서, 상기 열고정한 토우를 절단하여 5 내지 100 ㎜인 스테이플을 제조한다. 이어서, 상기 스테이플을 카딩(carding)공정 및 크로스래핑(cross lapping)공정을 통해 웹(Web)을 형성한 후 니들펀치를 이용하여 부직포를 제조한다.Tow that focuses on the island-in-the-sea filaments manufactured by composite spinning is made and stretched. A crimp is then formed in the stretched tow and heated to a predetermined temperature to heat set. Subsequently, the heat-fixed tow is cut to prepare staples of 5 to 100 mm. Subsequently, a web is formed through a carding process and a cross lapping process, and then a nonwoven fabric is manufactured by using a needle punch.

선택적으로, 스테이플을 제조하지 않고, 복합방사를 통해 제조된 장섬유 형태의 해도형 필라멘트를 바로 적층하여 웹을 형성하는 스펀본드 부직포를 제조할 수도 있다.Alternatively, a spunbond nonwoven fabric may be prepared in which a island-in-the-sea filament in the form of a long fiber is directly laminated by forming a web without forming staples, thereby forming a web.

이어서, 제조된 부직포를 5 중량% 농도의 가성소다 수용액에 처리하여 해성분을 용출한 후 이를 건조함으로써 인공피혁을 구성하는 폴리아미드 극세섬유를 제조한다.Subsequently, the prepared nonwoven fabric is treated with an aqueous solution of caustic soda at a concentration of 5% by weight to elute the sea component and then dried to prepare polyamide microfibers constituting artificial leather.

인공피혁의 상부층(인공피혁의 두께방향 중심부로부터 인공피혁의 표면사이 구간)내에 위치하는 극세섬유 함량(중량기준)은 아래와 같은 방법으로 평가한다.The ultrafine fiber content (based on weight) located in the upper layer of artificial leather (section between the thickness direction of artificial leather and the surface of artificial leather) is evaluated by the following method.

동일한 면적을 갖는 인공피혁(시료)의 두께를 측정한 후 인공피혁의 표면에서부터 인공피혁의 전체두께의 50%까지 연삭하여 인공피혁의 하부층 시료를 제조한다.After measuring the thickness of artificial leather (sample) having the same area, the lower layer sample of artificial leather is prepared by grinding up to 50% of the total thickness of artificial leather from the surface of artificial leather.

한편 인공피혁(시료)의 이면에서부터 인공피혁의 전체두께의 50%까지 연삭하여 인공피혁의 상부층 시료를 제조한다.Meanwhile, the upper layer sample of artificial leather is prepared by grinding up to 50% of the total thickness of artificial leather from the back side of artificial leather (sample).

제조된 하부층 시료 및 상부층 시료 각각의 중량을 측정한 다음, 상부층 시료 및 하부층 시료로부터 극세섬유 성분을 추출하고 추출 후 각각의 중량을 측정한다.After weighing each of the prepared lower layer sample and upper layer sample, the microfiber component is extracted from the upper layer sample and the lower layer sample, and each weight is measured after extraction.

극세섬유 추출전 상부층 시료 무게에서 극세섬유 추출 후 상부층 시료 무게를 빼는 방식으로 상부층 시료내 극세섬유의 무게를 계산한다.The weight of the microfibers in the upper layer sample is calculated by subtracting the upper layer sample weight after the microfiber extraction from the upper layer sample weight before the microfiber extraction.

한편, 극세섬유 추출전 하부층 시료 무게에서 극세섬유 추출 후 하부층 시료무게를 빼는 방식으로 하부층 시료내 극세섬유의 무게를 계산한다.Meanwhile, the weight of the ultrafine fibers in the lower layer sample is calculated by subtracting the lower layer sample weight after the ultrafine fiber extraction from the lower layer sample weight before the microfiber extraction.

상기와 같이 계산된 상부층 시료내 극세섬유 무게와 하부층 시료내 극세섬유 무게를 더하여 인공피혁내 극세섬유 전체중량을 구한다.The total weight of the microfibers in the artificial leather is obtained by adding the microfiber weights in the upper layer sample and the microfiber weights in the lower layer sample calculated as described above.

다음으로, 인공피혁내 극세섬유 전체무게대비 상부층내 극세섬유 무게를 백분율로 구하면 인공피혁의 상부층 내에 위치하는 극세섬유 함량(중량기준)이 된다.Next, when the weight of the microfibers in the upper layer to the total weight of the microfibers in the artificial leather is obtained as a percentage, it becomes the microfiber content (based on weight) located in the upper layer of the artificial leather.

이하 실시예 및 비교실시예를 통하여 본 발명을 보다 구체적으로 살펴본다.Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.

그러나 본 발명은 하기 실시예에 의해 권리범위가 한정되는 것은 아니다.However, the present invention is not limited by the following examples.

실시예 1Example 1

알칼리 이용해성 공중합 폴리에스테르의 해성분과 상기 해성분 내에 분산 배열된 폴리에스테르 수지의 도성분 91개로 구성된 해도형 복합섬유를 50mm의 길이로 절단하여, 단섬유화 하고 카딩 및 크로스 래퍼 공정을 거쳐 상기 해도형 복합 단섬유의 적층웹을 제조한 후, 이를 니들펀칭하여 해도형 복합섬유의 부직포를 제조하였다.The island-in-the-sea composite fiber composed of the sea component of the alkali-soluble copolyester and 91 island components of the polyester resin dispersed and dispersed in the sea component is cut to a length of 50 mm, shortened to fiber, and subjected to carding and cross wrapper processes. After preparing a laminated web of composite short fibers, needle punching was used to prepare a nonwoven fabric of island-in-the-sea composite fibers.

다음으로는 제조된 상기 부직포에 10% 농도의 폴리비닐알콜을 1차 함침하여 건조한 후 20% 농도의 폴리비닐 알콜을 나이프식 코팅기로 표면을 2차 코팅한 다음 건조한다.Next, the first non-woven fabric is first impregnated with 10% polyvinyl alcohol and dried, and then 20% polyvinyl alcohol is secondarily coated with a knife coater and then dried.

다음으로는 제조된 상기 부직포에 폴리우레탄 수지를 부직포 중량대비 40%를 함침한 후 습식응고하고, 이를 알칼리 수용액(가성소다 수용액)으로 처리하여 해도형 복합섬유 내 해성분을 용출하여 건조 하였다.Next, the prepared nonwoven fabric was impregnated with 40% of the nonwoven fabric by weight of polyurethane resin, followed by wet coagulation, and then treated with an aqueous alkali solution (caustic soda solution) to elute the sea component in the island-in-the-sea composite fiber.

다음으로는 기모기를 사용하여 상기 복합시트를 형성하고자 하는 모우의 입모방향과 정방향으로 연삭량이 0.09mm가 되도록 3회 버핑한 후 다시 그 반대 방향(형성하고자 하는 모우의 입모방향과 역방향)으로 연삭량이 0.08mm가 되도록 버핑하여 표면에 모우를 형성한 다음, 염색한 다음, 모우의 입모방향과 역방향으로 연삭량이 0.08mm가 되도록 2회 버핑한 후 다시 동일 방향으로 브러싱을 1회 진행하여 인공피혁을 제조하였다.Next, using a brush, buff three times so that the amount of grinding is 0.09 mm in the hair growth direction and the forward direction of the cows to form the composite sheet, and then grind in the opposite direction (the reverse direction of the hairs of the cows to be formed). The amount of wool is buffed to 0.08mm, then dyed, then dyed, and then buffed twice so that the grinding amount is 0.08mm in the opposite direction to the hair growth direction of the wool, and then brushed once again in the same direction. Prepared.

제조된 인공피혁의 두께방향 중심부로부터 인공피혁의 표면사이(상부층)에 위치하는 극세섬유의 함량(인공피혁내 포함된 극세섬유의 전체중량대비 백분율)은 63%이였다.The content of microfibers (percent of the total weight of microfibers included in artificial leather) located between the upper and upper surfaces of artificial leather was 63%.

실시예 2Example 2

2차 코팅에 10% 비닐알콜을 사용한 것을 제외하고는 실시예 1과 동일한 방법으로 차량용 인공피혁을 제조하였다.Vehicle artificial leather was manufactured in the same manner as in Example 1, except that 10% vinyl alcohol was used for the secondary coating.

제조된 인공피혁의 두께방향 중심부로부터 인공피혁의 표면사이(상부층)에 위치하는 극세섬유의 함량(인공피혁내 포함된 극세섬유의 전체중량대비 백분율)은 56%이였다.The content of microfibers (percent of the total weight of microfibers included in artificial leather) located between the upper and upper surfaces of artificial leather was 56%.

실시예 3Example 3

2차 코팅에 30% 비닐알콜을 사용한 것을 제외하고는 실시예 1과 동일한 방법으로 차량용 인공피혁을 제조하였다.Vehicle artificial leather was manufactured in the same manner as in Example 1, except that 30% vinyl alcohol was used for the secondary coating.

제조된 인공피혁의 두께방향 중심부로부터 인공피혁의 표면사이(상부층)에 위치하는 극세섬유의 함량(인공피혁내 포함된 극세섬유의 전체중량대비 백분율)은 71%이였다.The content of the microfibers (percentage of the total weight of the microfibers in the artificial leather) located between the top surface of the artificial leather from the center of the thickness direction of the manufactured artificial leather was 71%.

비교실시예 1Comparative Example 1

2차 코팅을 하지 않은 것을 제외하고는 실시예 1과 동일한 방법으로 차량용 인공피혁을 제조하였다.Except not having a secondary coating vehicle artificial leather was prepared in the same manner as in Example 1.

제조된 인공피혁의 두께방향 중심부로부터 인공피혁의 표면사이(상부층)에 위치하는 극세섬유의 함량(인공피혁내 포함된 극세섬유의 전체중량대비 백분율)은 51%이였다.The content of the microfibers (percent of the total weight of the microfibers in the artificial leather) located between the upper and upper surfaces of the artificial leather was 51%.

Claims (7)

단사섬도가 0.001~0.3데니어인 극세섬유들이 서로 교락된 부직포 내에 고분자 탄성체가 함침되어 있는 인공피혁에 있어서, 인공피혁 내에 포함된 상기 극세섬유의 전체중량을 기준으로 55~80 중량%의 극세섬유가 인공피혁의 두께방향 중심부로부터 인공피혁의 표면 사이에 위치하는 것을 특징으로 하는 인공피혁.In artificial leather in which a polymer elastic body is impregnated in a nonwoven fabric in which microfibers having a single yarn fineness of 0.001 to 0.3 denier are intertwined with each other, 55 to 80% by weight of microfibers is based on the total weight of the microfibers included in artificial leather. Artificial leather, characterized in that located between the surface of the artificial leather from the center of the thickness direction of the artificial leather. 제1항에 있어서, 상기 극세섬유는 폴리아미드 수지로 구성되는 것을 특징으로 하는 인공피혁.The artificial leather according to claim 1, wherein the microfine fibers are made of polyamide resin. 제1항에 있어서, 상기 고분자 탄성체는 폴리우레탄 수지 및 폴리우레아 수지 중에서 선택된 1종의 수지인 것을 특징으로 하는 인공피혁.The artificial leather according to claim 1, wherein the polymer elastomer is one resin selected from a polyurethane resin and a polyurea resin. 제1항에 있어서, 상기 인공피혁의 표면 및 이면 각각에는 입모가 형성되어 있으며, 인공피혁의 표면에 형성된 입모가 인공피혁의 이면에 형성된 입모보다 길이가 상대적으로 더 긴 것을 특징으로 하는 인공피혁.The artificial leather according to claim 1, wherein hairs are formed on each of the front and back surfaces of the artificial leather, and the hairs formed on the surface of the artificial leather have a relatively longer length than the hairs formed on the back of the artificial leather. 단사섬도가 0.001~0.3 데니어인 극세섬유들이 서로 교락된 부직포에 고분자 탄성체를 침지한 다음 응고-수세-기모하여 인공피혁을 제조함에 있어서, 상기 부직포에 고분자 탄성체를 침지하기 이전에 상기 부직포를 폴리비닐알콜 수용액으로 패딩처리한 다음 패딩처리된 부직포의 일면에 폴리비닐알콜 수지액을 코팅하는 것을 특징으로 하는 인공피혁의 제조방법.In manufacturing artificial leather by immersing a polymer elastic body in a nonwoven fabric in which microfibers having a single yarn fineness of 0.001 to 0.3 denier are interlocked with each other, and then coagulating-washing-napping to produce artificial leather, the nonwoven fabric is made of polyvinyl polypropylene before immersing the polymer elastic body in the nonwoven fabric. A method of manufacturing artificial leather, characterized in that the polyvinyl alcohol resin solution is coated on one surface of the padded nonwoven fabric after padding with an aqueous alcohol solution. 제5항에 있어서, 코팅에 사용되는 폴리비닐알콜 수지액내 고형분(폴리비닐알콜) 농도가 12~40%인 것을 특징으로 하는 인공피혁의 제조방법.The method for producing artificial leather according to claim 5, wherein the concentration of the polyvinyl alcohol resin in the polyvinyl alcohol resin solution used for coating is 12 to 40%. 제5항에 있어서, 패딩처리된 부직포의 일면에 폴리비닐알콜 수지액을 나이프 코팅 방식으로 코팅하는 것을 특징으로 하는 인공피혁의 제조방법.The method of manufacturing artificial leather according to claim 5, wherein the polyvinyl alcohol resin solution is coated on one surface of the padded nonwoven fabric by a knife coating method.
KR1020110099610A 2011-09-30 2011-09-30 Artificial leather and method of manufacturing the same KR20130035369A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013114598A1 (en) 2013-04-01 2014-10-02 Hyundai Motor Company Brake control system and method for a vehicle
WO2016052906A1 (en) * 2014-09-29 2016-04-07 코오롱인더스트리 주식회사 Suede type artificial leather with antifouling property, and preparation method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013114598A1 (en) 2013-04-01 2014-10-02 Hyundai Motor Company Brake control system and method for a vehicle
WO2016052906A1 (en) * 2014-09-29 2016-04-07 코오롱인더스트리 주식회사 Suede type artificial leather with antifouling property, and preparation method therefor

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