KR100510768B1 - Artificial leather with excellent alkali resistance. - Google Patents
Artificial leather with excellent alkali resistance. Download PDFInfo
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- KR100510768B1 KR100510768B1 KR1019980010643A KR19980010643A KR100510768B1 KR 100510768 B1 KR100510768 B1 KR 100510768B1 KR 1019980010643 A KR1019980010643 A KR 1019980010643A KR 19980010643 A KR19980010643 A KR 19980010643A KR 100510768 B1 KR100510768 B1 KR 100510768B1
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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
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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
- D06N3/0002—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
- D06N3/0036—Polyester fibres
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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
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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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
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/904—Artificial leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
본 발명은 내알카리성이 우수한 인공피혁에 관한 것이다. The present invention relates to artificial leather excellent in alkali resistance.
본 발명의 인공피혁은 해성분인 알카리 용해성 공중합 폴리에스테르와 도성분인 폴리트리메틸렌 테레프탈레이트로 구성되는 해도형 복합섬유 부직포에 폴리우레탄계 고분자 탄성체를 함침한 후 알카리 수용액으로 상기 해성분을 용출하여 제조된다. 본 발명의 인공피혁은 100℃ 이하에서 분산염료로 염색이 가능하며, 가성소오다 수용액 (95℃, 5%, 5분) 처리에 대한 도성분의 강도유지율이 90% 이상이다. The artificial leather of the present invention is prepared by impregnating a polyurethane-based polymer elastomer in an island-in-the-sea composite fiber nonwoven fabric composed of an alkaline soluble copolyester as a sea component and a polytrimethylene terephthalate as an island component, and then eluting the sea component with an aqueous alkali solution. do. The artificial leather of the present invention can be dyed with a disperse dye at 100 ° C. or less, and the strength retention rate of the island component for the aqueous sodium hydroxide solution (95 ° C., 5%, 5 minutes) is 90% or more.
Description
본 발명은 내알카리성이 우수한 인공피혁에 관한 것이다. The present invention relates to artificial leather excellent in alkali resistance.
최근 인공피혁은 천연피혁 대체용으로 의류 및 신발 등의 소재로 많이 사용되고 있다. Recently, artificial leather is used as a material for clothing and shoes as a substitute for natural leather.
이와 같은 인공피혁은 일반적으로 다음과 같은 공정에 의해 제조된다.Such artificial leather is generally manufactured by the following process.
(ⅰ) 해성분 및 도성분 폴리머를 복합방사 및 연신하여 단사섬도가 3∼5 데니어 수준인 해도형 복합섬유를 제조하고, (ⅱ) 이들 해도형 복합섬유에 권축을 부여한 후 절단하여 단섬유(스테이플)을 제조하고, (ⅲ) 상기 스테이플들을 카딩 및 니들펀칭 등의 공정으로 3차원 교락시켜 부직포를 제조하고, (ⅳ) 상기 부직포를 폴리비닐알코올 수용액에 패딩하여 형태를 안정화 시키고, (ⅴ) 여기에 폴리우레탄 용액을 함침시켜 탄성을 갖는 폴리우레탄 함침포를 제조하고, (ⅵ) 상기 함침포를 열압착 또는 열풍압착시킨 후 가성소오다 수용액으로 감량가공하여 부직포내 해성분을 용출시켜 섬유들을 극세화하고, (ⅶ) 상기 폴리우레탄 함침포를 버핑하여 인공피혁을 제조한다.(Iii) Composite spinning and stretching sea component and island component polymer to produce island-in-sea composite fibers having a single yarn fineness of 3 to 5 deniers, and (ii) impart crimping to these islands-in-the-sea composite fibers and then cut and cut short fibers ( Staples), (iii) three-dimensional interlacing of the staples by a process such as carding and needle punching to prepare a nonwoven fabric, (iii) padding the nonwoven fabric with an aqueous polyvinyl alcohol solution to stabilize the form, and (iii) Impregnating a polyurethane solution therein to prepare a polyurethane-impregnated cloth having elasticity, (iii) the impregnated cloth is hot-pressed or hot-air-pressed and then weight-reduced with an aqueous solution of caustic soda to elute the sea component in the nonwoven fabric. It is made fine and (iii) the polyurethane impregnated fabric is buffed to produce artificial leather.
상기와 같은 공정에 있어서, 지금까지는 국내 공개특허 제 90-10138, 동 90-11937호, 동 93-6245호 등에 기재된 바와 같이 비용출성분(이하 "도성분"이라고 한다)이 나일론 또는 폴리에스테르이고 용출성분(이하 "해성분"이라고 한다)이 공중합 폴리에스테르, 폴리스티렌 또는 폴리에틸렌인 해도형 복합섬유를 주로 사용해 왔다. 그러나 상기 해성분중 폴리스티렌 및 폴리에틸렌은 유기용제에 의해서만 용해가 가능하기 때문에 가격상승 및 작업시 위험성 등의 단점이 있기 때문에, 알카리 용해성이 우수한 공중합 폴리에스테르가 해성분으로 가장 널리 사용되고 있다.In the process as described above, the non-exhaust component (hereinafter referred to as "conducting component") is nylon or polyester as described in Korean Patent Laid-Open Publication Nos. 90-10138, 90-11937, 93-6245, and the like. The island-in-the-sea composite fiber in which the eluting component (hereinafter referred to as "sea component") is copolyester, polystyrene or polyethylene has been mainly used. However, since polystyrene and polyethylene of the sea component can be dissolved only by an organic solvent, there are disadvantages such as price increase and risks in operation, and copolyester with excellent alkali solubility is most widely used as a sea component.
공중합 폴리에스테르는 테레프탈산과 에틸렌 글리콜을 주성분으로 하고, 여기에 이소프탈산, 5-소디움 술포이소프탈산 및 / 또는 폴리에틸렌글리콜 3∼20 몰 %가 공중합된 것으로서 일반 폴리에스테르에 비해 알카리 용해성이 약 5배 이상 향상되는 것으로 알려져 있다.Copolyester is composed mainly of terephthalic acid and ethylene glycol, and isophthalic acid, 5-sodium sulfoisophthalic acid, and / or 3 to 20 mol% of polyethylene glycol is copolymerized, and alkali solubility is about 5 times higher than that of general polyester. It is known that the above improvement.
해성분이 상기 공중합 폴리에스테르이고, 도성분이 폴리에스테르로 구성된 종래의 해도형 극세사는 다음과 같은 문제가 있다. Conventional islands-in-the-sea type microfibers whose sea component is said co-polyester and a island component are polyester have the following problems.
첫째, 해성분을 알카리 수용액으로 용출할 때 내알카리성이 약한 도성분 폴리에스테르가 알카리에 취화되어 인공피혁의 물성이 저하되고, First, when the sea component is eluted with an aqueous alkali solution, a weak alkali resistant island component polyester is embrittled in the alkali, thereby deteriorating the physical properties of artificial leather,
둘째, 도성분인 폴리에스테르의 염색특성상 고온염색이 필요하기 때문에 인공피혁의 염색이 복잡함과 동시에 고온염색으로 인공피혁의 입모가 손상되고,Second, since high temperature dyeing is required due to the dyeing characteristics of polyester, which is an island component, the artificial leather is complicated to dye and the hair of artificial leather is damaged by high temperature dyeing,
셋째, 폴리에스테르의 낮은 탄성회복율에 기인하여 인공피혁의 반발특성이 저하되는 등의 문제가 있다. Third, due to the low elastic recovery rate of the polyester, there is a problem that the resilience characteristics of artificial leather is lowered.
한편, 해성분이 상기 공중합 폴리에스테르이고, 도성분이 나일론으로 구성된 해도형 복합섬유로 인공피혁을 제조하는 경우에는 상기와 같은 여러 문제점을 해결할 수 있지만 인공피혁의 신축성이 저하되는 문제가 있다. On the other hand, if the sea component is the co-polyester, and the island component is made of island-in-the-sea composite fiber composed of nylon, it is possible to solve the above problems, but there is a problem that the elasticity of the artificial leather is lowered.
본 발명은 내알카리성이 우수하여 가성소오다 수용액 (95℃, 5%, 5분)처리에 대한 도성분의 강도유지율이 90% 이상이며, 100℃ 이하에서도 분산염료 염색이 가능한 인공피혁을 제공하고자 한다. The present invention is excellent in alkali resistance, the strength retention rate of the island component for the treatment of caustic soda aqueous solution (95 ℃, 5%, 5 minutes) is more than 90%, to provide artificial leather that can be dispersed dye dye at 100 ℃ or less do.
본 발명은 내알카리성이 우수한 인공피혁에 관한 것이다.The present invention relates to artificial leather excellent in alkali resistance.
더욱 구체적으로 본 발명은 해도형 극세섬유 중에서 해성분이 용출된 후 남은 도성분과 폴리우레탄계 고분자 탄성체로 구성되는 인공피혁에 있어서, 상기 도성분이 폴리트리메틸렌 테레프탈레이트이고, 가성소오다 수용액 (95℃, 5%, 5분) 처리에 대한 도성분의 강도유지율이 90% 이상인 것을 특징으로 하는 인공피혁에 관한 것이다. More specifically, the present invention is an artificial leather composed of the island component and polyurethane-based polymer elastomer after the sea component is eluted in the island-in-the-sea fine microfiber, the island component is polytrimethylene terephthalate, caustic soda aqueous solution (95 ℃, 5 %, 5 minutes) relates to artificial leather, characterized in that the strength retention of the island component for the treatment is 90% or more.
이하 본 발명을 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in detail.
먼저 본 발명에서 인공피혁 제조에 사용하는 복합섬유는 해성분인 알카리 이용해성 공중합 폴리에스테르와 도성분인 폴리트리메틸렌 테레프탈레이트를 통상의 해도형 복합섬유용 구금장치로 복합방사한 후 연신하여 제조된다. 복합방사시 해성분은 10∼60 중량%까지, 도성분은 90∼40 중량%까지로 하는 것이 바람직하나 이들의 중량비를 특별하게 한정하는 것은 아니다. 또한 도성분은 해도형 극세사를 구성하는 각 필라멘트의 단면에 적어도 10개 이상 각각 분리되어 배열되고 섬유축 길이방향에 연속하여 있으며, 해성분 용출후의 도성분 한 개의 섬도는 0.01∼0.25 데니어인 것이 바람직하다. 본 발명은 종래 인공피혁의 문제점들을 해결하기 위해서 도성분이 폴리에틸렌 테레프탈레이트(PET)와 폴리부틸렌 테레프탈레이트(PBT) 중간의 탄소수를 갖고, 폴리아미드와 유사한 탄성회복율을 가지면서 내알카리성이 뛰어나고, 신축성, 저온염색성 및 염색견뢰도가 우수한 폴리트리메틸렌 테레프탈레이트인 해도형 복합섬유로 인공피혁을 제조함을 특징으로 한다. First, in the present invention, the composite fiber used for manufacturing artificial leather is prepared by complex spinning of alkaline soluble co-polyester as a sea component and polytrimethylene terephthalate as a island component with a spinner for a conventional islands-in-the-sea composite fiber. . It is preferable to set the sea component to 10 to 60% by weight and the island component to 90 to 40% by weight during the composite spinning, but the weight ratio thereof is not particularly limited. In addition, the island component is arranged separately in the cross section of each filament constituting the island-in-the-sea fine microfiber, and is continuous in the longitudinal direction of the fiber axis, the fineness of one island component after sea component elution is preferably 0.01 to 0.25 denier Do. The present invention has a carbon number between the polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) in order to solve the problems of the conventional artificial leather, excellent alkali resistance and elasticity while having a similar elastic recovery rate as polyamide It is characterized in that the artificial leather is manufactured from the island-in-the-sea composite fiber which is polytrimethylene terephthalate having excellent low-temperature dyeability and dyeing fastness.
본 발명에서 해도형 복합섬유 제조시 도성분으로 사용되는 폴리트리메틸렌 테레프탈레이트는 테레프탈산 또는 디메틸 테레프탈레이트와 1,3-프로판디올을 축중합하여 제조되며 식(I)과 같은 구조식을 갖는다. In the present invention, polytrimethylene terephthalate, which is used as an island component in the preparation of island-in-the-sea composite fibers, is prepared by condensation polymerization of terephthalic acid or dimethyl terephthalate and 1,3-propanediol, and has a structural formula (I).
다음으로는 상기와 같이 제조한 해도형 복합섬유를 사용하여 통상적인 인공피혁 제조방법으로 인공피혁을 제조한다. 구체적으로 상기 해도형 복합섬유에 권축을 부여한 후 절단하여 단섬유(스테이플)을 제조한 후 이들을 카딩 및 니들펀칭 등의 공정으로 3차원 교락시켜 부직포를 제조한다. 다음으로는 상기 부직포를 폴리비닐알코올 수용액에 패딩하여 형태를 안정화시킨 후, 여기에 폴리우레탄 용액을 함침시켜 탄성을 갖는 폴리우레탄 함침포를 제조한다. 계속해서 상기 함침포를 열압착 또는 열풍압착시킨 후 가성소오다 수용액으로 감량가공하여 부직포내 해성분을 용출시켜 섬유들을 극세화하고, 버핑하여 인공피혁을 제조한다. 본 발명의 인공피혁은 도성분이 폴리트리메틸렌 테레프탈레이트인 해도형 복합섬유로 제조되기 때문에 도성분 수지자체의 특성으로 인해 내알카리성이 매우 우수하다. 그 결과 도성분이 해성분 용출시 알카리에 의해 취화되지 않기 때문에 강도 등의 물성이 우수하다. 아울러 본 발명의 인공피혁은 염색성이 우수하여 100℃ 이하에서 분산염료 염색이 가능하며, 세섬도화에 따른 염색견뢰도 저하도 없다.Next, artificial leather is manufactured by a conventional artificial leather manufacturing method using the island-in-the-sea composite fiber prepared as described above. Specifically, non-woven fabric is produced by crimping the island-in-the-sea composite fiber and cutting the same to prepare short fibers (staples), and then three-dimensionally entangle them with a process such as carding and needle punching. Next, the nonwoven fabric is padded in an aqueous polyvinyl alcohol solution to stabilize the shape, and then, the polyurethane solution is impregnated thereto to prepare a polyurethane impregnated cloth having elasticity. Subsequently, the impregnated fabric is thermally compressed or hot-air compressed, and then reduced in weight with a caustic soda solution to elute the sea component in the nonwoven fabric, thereby minimizing the fibers and buffing to produce artificial leather. The artificial leather of the present invention has excellent alkali resistance due to the properties of the island component resin itself because the island component is made of island-in-the-sea composite fiber of polytrimethylene terephthalate. As a result, since the island component is not embrittled by alkali during elution of the sea component, the physical properties such as strength are excellent. In addition, the artificial leather of the present invention is excellent in dyeability, it is possible to dye the dye dispersion at 100 ℃ or less, there is no decrease in the color fastness due to the fineness of the fineness.
본 발명에 있어서 각종 물성은 아래 방법으로 평가한다. Various physical properties in the present invention are evaluated by the following method.
ㆍ 가성소오다 수용액 처리에 대한 도성분의 강도유지율(내알카리성)ㆍ Strength retention rate of island component for caustic soda aqueous solution (alkali resistance)
해성분이 100% 용출된 직후의 도성분 강도 (A)와 해성분이 100% 용출된 다음 다시 95℃의 가성소오다 수용액 (농도 5%)에서 5분간 처리한 도성분 강도 (B)를 KS K 0520 방법으로 각각 측정한다. 이들 측정값을 아래식에 대입하여 구한다. The island component strength (A) immediately after 100% of the sea component was eluted, and the island component strength (B) which was treated for 5 minutes in an aqueous solution of caustic soda (concentration 5%) at 95 ° C. again was KS K 0520 Each method is measured. These measurements are obtained by substituting the following equation.
알칼리수용액 처리에 대한 For alkaline water treatment
도성분의 강도 유지율 = t100 Strength retention of island components = t100
ㆍ 인공피혁 인장강도ㆍ Tensile strength of artificial leather
KS K 0520 규격으로 평가한다.It is evaluated according to KS K 0520 standard.
ㆍ 색도차 및 K/S 값Chromaticity Difference and K / S Value
컴퓨터 칼라측정기로 측정한다.Measure with a computer colorimeter.
ㆍ 염색견뢰도Dye Fastness
KS K 0430 방법으로 평가한다.Evaluate by KS K 0430 method.
실시예 및 비교실시예를 통해 본 발명을 더욱 구체적으로 살펴본다. 그러나 본 발명이 하기 실시예에만 한정되는 것은 아니다.The present invention will be described in more detail through Examples and Comparative Examples. However, the present invention is not limited only to the following examples.
실시예 1Example 1
메틸렌 클로라이드와 트리플로로아세틱 액시드가 50:50인 30℃ 용액에서 측정한 고유점도가 0.88인 폴리트리메틸렌 테레프탈레이트를 도성분으로 사용하여, 이를 온도가 260℃인 도성분 압출기에서 용융한다.Polytrimethylene terephthalate having an intrinsic viscosity of 0.88 measured in a 30 ° C. solution of 50:50 methylene chloride and trifluoroacetic acid is used as a island component and melted in a island-based extruder having a temperature of 260 ° C. .
한편 알카리 이용해성 공중합 폴리에스테르를 해성분으로 사용하여, 이를 온도가 285℃인 해성분 압출기에서 용융한다. 각각 압출기에서 용융된 도성분(폴리트리메틸렌 테레프탈레이트)과 해성분 (알카리 이용해성 공중합 폴리에스테르)을 50:50의 중량비로 온도가 285℃이고 도성분의 개수가 36개인 해도형 복합섬유용 방사구금에 공급하여 복합방사한 다음 1,200m/분의 권취속도로 미연신사를 제조한다. 계속해서 미연신사를 3.6배의 연신배율로 연신한 후 길이 51mm, 섬도 3.5 데니어, 크림프수 14개/인치의 복합섬유 스테이플을 제조한다. 제조한 스테이플을 개섬, 카딩하고 40번 바늘로 니들펀칭하여 중량 25g/㎡ 의 3차원 교락 부직포를 제조한다. 상기 부직포는 95℃의 열수에서 5분간 수축시켰을 때 면적수축율이 10% 였다. 이어서, 폴리비닐알콜 5% 수용액을 부직포에 패딩하고 건조하여, 섬유무게에 대하여 고형분 6%를 충전한다. 이어서, 상기 부직포에 탄성을 부여하기 위해 폴리우레탄 12%의 디메틸포름알데히드 용액을 함침한 후 부직포 두께의 90% 갭으로 패딩하고 물에 응고시킨 후 통상의 방법으로 수세, 건조한다. 다음에 더욱 유연한 성질을 갖도록 100℃ 스팀하에서 농도 10% 가성소오다 수용액에 5분간 패딩하고 스퀴징한 이온성 침투제 1% 수용액에서 8분간 감량가공을 연속적으로 행하고 80℃의 물에서 수세, 건조한다. 이때 섬유:폴리우레탄의 함량비는 65:35으로 한다. 이어서, 표면 모우 정리를 위해 버핑한 다음 아래와 같은 조건에서 염색한다.On the other hand, using an alkali-soluble copolyester as a sea component, it is melted in a sea component extruder having a temperature of 285 ℃. Spinning of the island component (polytrimethylene terephthalate) and the sea component (alkali-soluble copolyester) melted in an extruder, respectively, with a weight ratio of 50:50 for 285 ° C. and 36 islands After supplying to the prison complex spinning, undrawn yarn is produced at a winding speed of 1,200m / min. Subsequently, an undrawn yarn is drawn at a draw ratio of 3.6 times, and then a composite fiber staple having a length of 51 mm, a fineness of 3.5 deniers and 14 crimps / inch is produced. The prepared staples are opened, carded, and needle punched with needle 40 to produce a three-dimensional entangled nonwoven fabric having a weight of 25 g / m 2. The nonwoven fabric had an area shrinkage of 10% when shrinked for 5 minutes in hot water at 95 ° C. Subsequently, a 5% aqueous polyvinyl alcohol solution is padded with a nonwoven fabric and dried to fill 6% of the solids with respect to the fiber weight. Subsequently, in order to impart elasticity to the nonwoven fabric, a 12% polyurethane dimethylformaldehyde solution is impregnated, padded with a 90% gap of the thickness of the nonwoven fabric, coagulated with water, and washed with water and dried in a conventional manner. Subsequently, padding is carried out for 5 minutes in a 10% aqueous solution of sodium hydroxide at 100 ° C. under steam at 100 ° C. for 5 minutes, followed by 8 minutes of squeezing in a 1% aqueous solution of ionic penetrant, followed by washing with water at 80 ° C. and drying. . At this time, the content ratio of fiber: polyurethane is 65:35. Subsequently, it is buffed for surface mowing and then dyed under the following conditions.
(1) 염색온도 및 시간 : 상압 100 ℃ × 1시간(1) Dyeing temperature and time: normal pressure 100 ℃ × 1 hour
(2) 염료 : 미케톤 레드(MIKETONE RED) FB (스미토모사 제품) 3% owf(2) Dye: MIKETONE RED FB (Sumitomosa) 3% owf
염색후 미고착된 염료의 완전탈락을 위해 50℃인 BK-20 (니카사 제품) 2g/ℓ와 하이드로설파이트 2g/ℓ 세정제 중에서 20분간 처리하여 환원세정한 후 수세하여 인공피혁을 제조한다. 제조한 염색 인공피혁의 물성을 앞에서 설명한 방법으로 평가한 결과는 표 1과 같다.In order to completely remove the unfixed dye after dyeing, the artificial leather is prepared by treating with BK-20 (manufactured by Nika Co., Ltd.) at 50 ° C. for 2 minutes and washing with 2 g / L of hydrosulfite for 20 minutes, followed by reduction washing. Table 1 shows the results of evaluating the physical properties of the manufactured artificial leather by the method described above.
비교실시예 1Comparative Example 1
도성분으로 폴리에틸렌 테레프탈레이트를 사용한 것을 제외하고는 실시예 1과 동일한 조건 및 공정을 해도형 복합섬유 염색 인공피혁을 제조한다. 제조한 염색 인공피혁의 물성을 앞에서 설명한 방법으로 평가한 결과는 표 1과 같다.The island-in-the-sea composite fiber dyeing artificial leather was manufactured under the same conditions and processes as in Example 1 except that polyethylene terephthalate was used as the island component. Table 1 shows the results of evaluating the physical properties of the manufactured artificial leather by the method described above.
< 표 1 > 인공피혁 물성측정 결과<Table 1> Measurement results of artificial leather
본 발명의 인공피혁은 내알카리성이 우수하여 해성분 용출시 도성분의 취화가 적어 인공피혁의 물성이 우수하다. 또한 100℃ 이하에서도 분산염료 염색이 가능하며 우수한 촉감 및 반발탄성을 갖는다. The artificial leather of the present invention has excellent alkali resistance, so that the embrittlement of the island component is small when the sea component is eluted, and the physical properties of the artificial leather are excellent. In addition, it is possible to dye disperse dyes at less than 100 ℃ and has excellent touch and resilience.
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| KR20050073909A (en) * | 2004-01-12 | 2005-07-18 | 주식회사 휴비스 | Ultra fine conjugate ptt fibers for artificial leather and manufacturing method thereof |
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