KR101592846B1 - Non-woven Fabric Having Excellent Air Permeability and Elasticity, and Artificial Leather Using the Same - Google Patents
Non-woven Fabric Having Excellent Air Permeability and Elasticity, and Artificial Leather Using the Same Download PDFInfo
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- KR101592846B1 KR101592846B1 KR1020140023107A KR20140023107A KR101592846B1 KR 101592846 B1 KR101592846 B1 KR 101592846B1 KR 1020140023107 A KR1020140023107 A KR 1020140023107A KR 20140023107 A KR20140023107 A KR 20140023107A KR 101592846 B1 KR101592846 B1 KR 101592846B1
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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
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
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- 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
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
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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
- D06N3/0011—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
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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
- D06N2209/00—Properties of the materials
- D06N2209/12—Permeability or impermeability properties
- D06N2209/121—Permeability to gases, adsorption
- D06N2209/123—Breathable
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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
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1635—Elasticity
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- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
본 발명의 저융점 탄성 폴리에스테르 부직포는 기재층과 폴리우레탄 피막 코팅층을 결합시키는 바인더로서 고유점도(IV)가 1.0∼1.6, 융점(MP)이 110℃∼160℃, 수분율이 9,900∼10,100 ppm인 저융점 폴리에스테르 결정성 수지로 제조되는 것을 그 특징으로 한다. 본 발명에 따른 인조피혁은 기재층과 폴리우레탄 피막 코팅층 사이에 상기 저융점 탄성 폴리에스테르 부직포를 바인더 부직포 또는 핫멜트 접착 부직포로 사용하여 기재층과 폴리우레탄 피막 코팅층을 결합시킨 것을 그 특징으로 한다. 본 발명에서는 통기성과 탄성이 우수한 열융착 부직포를 제조하고, 이를 바인더로 이용함으로써 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 제조할 수 있다. The low-melting-point elastic polyester nonwoven fabric of the present invention is a binder for bonding a base layer and a polyurethane coating layer, and has an intrinsic viscosity (IV) of 1.0 to 1.6, a melting point (MP) of 110 to 160 占 폚 and a moisture content of 9,900 to 10,100 ppm And is made of a low-melting-point polyester crystalline resin. The artificial leather according to the present invention is characterized in that a substrate layer and a polyurethane coating layer are bonded to each other by using the low melting point elastic polyester nonwoven fabric as a binder nonwoven fabric or a hot melt adhesive nonwoven fabric between a base layer and a polyurethane coating layer. In the present invention, a polyurethane artificial leather excellent in breathability and elasticity can be produced by preparing a heat-sealable nonwoven fabric having excellent breathability and elasticity and using it as a binder.
Description
본 발명은 열융착 부직포 및 이를 이용한 폴리우레탄 인조피혁에 관한 것이다. 구체적으로, 본 발명은 통기성과 탄성이 우수한 열융착 부직포를 제조하고, 이를 이용하여 제조한 폴리우레탄 인조피혁에 관한 것이다.
The present invention relates to a heat-sealable nonwoven fabric and a polyurethane artificial leather using the same. Specifically, the present invention relates to a polyurethane artificial leather produced by manufacturing a heat-sealable nonwoven fabric having excellent breathability and elasticity.
인조피혁은 천연가죽의 외관 및 물성을 대체하기 위해 만들어진 인공소재로서, 베이스(기재층)로 사용되는 직물이나 부직포 위에 폴리염화비닐이나 폴리우레탄 수지를 도포 또는 침투시켜 제조된다. 인조피혁은 의류나 신발에 사용되는 고가의 천연피혁을 대체하는 용도로 사용된다. Artificial leather is an artificial material made to replace the appearance and physical properties of natural leather. It is produced by applying or infiltrating polyvinyl chloride or polyurethane resin onto a fabric or nonwoven fabric used as a base (base layer). Artificial leather is used to replace expensive natural leather used in clothing and footwear.
신발의 경우 주로 폴리우레탄 인조피혁이 사용되는데, 이 인조피혁은 원단 기재층에 폴리우레탄 수지를 코팅시켜 제조된다. 폴리우레탄 수지를 코팅하는 방법은 습식법, 건식법 및 이를 혼합한 습건식법으로 구분된다. 습식법은 폴리우레탄 함침액에 부직포를 함침시켜 폴리우레탄 수지를 부직포 내부에 침투시킨 후, 응고조에서의 응고, 원단에 잔류한 용제의 수세공정 및 건조공정을 거쳐 인조피혁을 제조한다. 건식법은 이형지 위에 건식 피막용 폴리우레탄을 도포하고, 적적 온도로 가열/건조하여 경화시킨 후, 상기 이형지상에 경화된 폴리우레탄 층에 접착용 폴리우레탄을 도포한 후 원단과 라미네이팅하고, 열과 압력을 부여하여 경화된 폴리우레탄 피막과 원단을 접착시킨 뒤, 이형지를 박리시켜 인조피혁을 제조하는 방법이다. 습건식법은 습식법과 건식법을 부분적으로 조합한 방식이다. In the case of shoes, polyurethane artificial leather is mainly used, which is produced by coating polyurethane resin on the base substrate layer. The coating method of the polyurethane resin is classified into a wet method, a dry method and a wet and dry method in which the polyurethane resin is mixed. In the wet process, a polyurethane resin impregnated with a nonwoven fabric is impregnated with a polyurethane impregnation solution, and then the polyurethane resin is impregnated into the nonwoven fabric, followed by solidification in a coagulation bath, washing of the solvent remaining in the fabric, and drying process. In the dry method, a polyurethane for dry film is applied on a release paper, heated and dried at an appropriate temperature to cure the polyurethane, and then the adhesive polyurethane is applied to the cured polyurethane layer on the release paper and laminated with the fabric. And then adhering the cured polyurethane film and the fabric, and peeling the releasing paper to produce artificial leather. The wet-dry method is a combination of a wet method and a dry method.
인조피혁 제조시 폴리우레탄 코팅층과 기재층을 단단히 결합시키는 것이 중요하다. 따라서 이 결합을 위하여 결합용 접착제가 다양하게 개발되어 왔다. 대표적으로 특허 제0302108호에는 폴리에스테르계 섬유용 접착제에 관한 발명이 개시되고, 특허출원 제2006-0136158호에는 저융점 폴리에스테르 섬유의 제조방법이 개시되며, 특허출원 제2007-0055515호에는 신발 안창용 핫멜트 접착필름 조성물이 개시된다. It is important to firmly bond the polyurethane coating layer and the substrate layer when producing artificial leather. Therefore, various bonding adhesives have been developed for this bonding. Patent No. 0302108 discloses an invention relating to a polyester-based fiber, Patent Application No. 2006-0136158 discloses a method of producing a low-melting-point polyester fiber, and Patent Application No. 2007-0055515 discloses an adhesive for a polyester- A hot melt adhesive film composition is disclosed.
그러나, 상기 특허들은 폴리우레탄 코팅층과 기재층을 결합시키기 위해 핫멜트 수지로서 필름형태의 수지를 사용하고, 이 필름은 기재층과 폴리우레탄 피막코팅층 사이에 위치하기 때문에, 인조피혁의 통기도가 좋지 못하게 되고 탄성도 저하되는 문제점을 나타낸다.However, the above-mentioned patents use a film-form resin as a hot-melt resin for bonding the polyurethane coating layer and the base layer, and since the film is positioned between the base layer and the polyurethane coating layer, the artificial leather becomes poor in air permeability And the elasticity is lowered.
따라서 본 발명자들은 종래기술의 상기와 같은 문제점을 해결하고자 기재층과 폴리우레탄 피막 코팅층을 결합시키는 바인더로서 필름형태의 핫멜트 수지 대신에 저융점 탄성 폴리에스테르 부직포를 개발하여, 결국 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 개발하기에 이르렀다.
Accordingly, the present inventors have developed a low-melting-point elastic polyester nonwoven fabric instead of a film-type hot-melt resin as a binder for bonding a substrate layer and a polyurethane coating layer to solve the above problems of the prior art, Urethane artificial leather has been developed.
본 발명의 목적은 통기성과 탄성이 우수한 열융착 부직포를 제공하기 위한 것이다.An object of the present invention is to provide a heat-sealable nonwoven fabric excellent in breathability and elasticity.
본 발명의 다른 목적은 통기성과 탄성이 우수한 열융착 부직포를 사용함으로써 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 제공하기 위한 것이다.Another object of the present invention is to provide a polyurethane artificial leather excellent in breathability and elasticity by using a heat-sealable nonwoven fabric having excellent breathability and elasticity.
본 발명의 또다른 목적은 열융착 부직포를 사용함으로써 봉재공정을 거치지 않고 제조할 수 있는 폴리우레탄 인조피혁을 제공하기 위한 것이다.Another object of the present invention is to provide a polyurethane artificial leather which can be produced without using a bar stock process by using a heat-sealable nonwoven fabric.
본 발명의 또다른 목적은 봉재공정을 거치지 않음으로써 생산성과 경제성이 우수한 폴리우레탄 인조피혁을 제공하기 위한 것이다.It is still another object of the present invention to provide a polyurethane artificial leather excellent in productivity and economy by not passing through a bar stock process.
본 발명의 상기 및 기타 목적은 하기 상세히 설명되는 본 발명에 의하여 모두 달성될 수 있다.
These and other objects of the present invention can be achieved by the present invention which is described in detail below.
본 발명의 저융점 탄성 폴리에스테르 부직포는 기재층과 폴리우레탄 피막 코팅층을 결합시키는 바인더로서 고유점도(IV)가 1.0∼1.6, 융점(MP)이 110℃∼160℃, 수분율이 9,900∼10,100 ppm인 저융점 폴리에스테르 결정성 수지로 제조되는 것을 그 특징으로 한다. The low-melting-point elastic polyester nonwoven fabric of the present invention is a binder for bonding a base layer and a polyurethane coating layer, and has an intrinsic viscosity (IV) of 1.0 to 1.6, a melting point (MP) of 110 to 160 占 폚 and a moisture content of 9,900 to 10,100 ppm And is made of a low-melting-point polyester crystalline resin.
본 발명에 따른 인조피혁은 기재층과 폴리우레탄 피막 코팅층 사이에 상기 저융점 탄성 폴리에스테르 부직포를 바인더 부직포 또는 핫멜트 접착 부직포로 사용하여 기재층과 폴리우레탄 피막 코팅층을 결합시킨 것을 그 특징으로 한다. The artificial leather according to the present invention is characterized in that a substrate layer and a polyurethane coating layer are bonded to each other by using the low melting point elastic polyester nonwoven fabric as a binder nonwoven fabric or a hot melt adhesive nonwoven fabric between a base layer and a polyurethane coating layer.
본 발명에서는 통기성과 탄성이 우수한 열융착 부직포를 제조하고, 이를 바인더로 이용함으로써 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 제조할 수 있다. In the present invention, a polyurethane artificial leather excellent in breathability and elasticity can be produced by preparing a heat-sealable nonwoven fabric having excellent breathability and elasticity and using it as a binder.
이하 첨부된 도면을 참고로 본 발명의 구체적인 내용을 하기에 상세히 설명한다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
본 발명은 통기성과 탄성이 우수한 열융착 부직포를 제공하고, 이를 사용함으로써 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 제공하고, 봉재공정을 거치지 않음으로써 생산성과 경제성이 우수한 폴리우레탄 인조피혁을 제공하는 발명의 효과를 갖는다.
The present invention provides a polyurethane artificial leather excellent in breathability and elasticity by providing a heat-fusible nonwoven fabric having excellent breathability and elasticity, and by using the same, it is possible to provide a polyurethane artificial leather excellent in productivity and economical efficiency .
제1도는 종래기술에 따라 제조된 인조피혁의 단면도로서, 기재층(30)과 폴리우레탄 피막코팅층(10) 사이에 바인더로서 폴리우레탄 접착 필름(20)이 개재된 구성을 도시하는 단면도이다.
제2도는 본 발명에 따라 제조된 인조피혁의 단면도로서, 기재층(30)과 폴리우레탄 피막코팅층(10) 사이에 바인더로서 저융점 탄성 폴리에스테르 부직포(20’)가 개재된 구성을 도시하는 단면도이다.FIG. 1 is a cross-sectional view of a synthetic leather produced according to the prior art, in which a polyurethane
FIG. 2 is a cross-sectional view of a synthetic leather produced according to the present invention, showing a cross-section showing a configuration in which a low melting point elastic polyester nonwoven fabric 20 'is interposed as a binder between a
본 발명은 열융착 부직포 및 이를 이용한 폴리우레탄 인조피혁에 관한 것으로, 통기성과 탄성이 우수한 열융착 부직포를 제조하고, 이를 이용하여 제조한 폴리우레탄 인조피혁에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-fusible nonwoven fabric and a polyurethane artificial leather using the same, and relates to a polyurethane artificial leather produced by manufacturing a heat-fusible nonwoven fabric having excellent breathability and elasticity.
본 발명의 저융점 탄성 폴리에스테르 부직포는 기재층과 폴리우레탄 피막 코팅층을 결합시키는 바인더로서 고유점도(IV)가 1.0∼1.6, 융점(MP)이 110℃∼160℃, 수분율이 9,900∼10,100 ppm인 저융점 폴리에스테르 결정성 수지로 제조되는 것을 그 특징으로 한다. The low-melting-point elastic polyester nonwoven fabric of the present invention is a binder for bonding a base layer and a polyurethane coating layer, and has an intrinsic viscosity (IV) of 1.0 to 1.6, a melting point (MP) of 110 to 160 占 폚 and a moisture content of 9,900 to 10,100 ppm And is made of a low-melting-point polyester crystalline resin.
본 발명에 따른 인조피혁은 기재층과 폴리우레탄 피막 코팅층 사이에 상기 저융점 탄성 폴리에스테르 부직포를 바인더 부직포 또는 핫멜트 접착 부직포로 사용하여 기재층과 폴리우레탄 피막 코팅층을 결합시킨 것을 그 특징으로 한다. The artificial leather according to the present invention is characterized in that a substrate layer and a polyurethane coating layer are bonded to each other by using the low melting point elastic polyester nonwoven fabric as a binder nonwoven fabric or a hot melt adhesive nonwoven fabric between a base layer and a polyurethane coating layer.
본 발명에서는 저융점 탄성 폴리에스테르 부직포를 기재층과 폴리우레탄 피막 코팅층 사이에 위치시킨 후 웰딩(welding) 만으로 열에 의해 기재층과 폴리우레탄 피막 코팅층을 융착시켜 인조피혁을 제조한다. In the present invention, a low-melting-point elastic polyester nonwoven fabric is placed between a base layer and a polyurethane coating layer, and then the substrate layer and the polyurethane coating layer are fused by heat only by welding, thereby producing artificial leather.
제1도는 종래기술에 따라 제조된 인조피혁의 단면도로서, 기재층(30)과 폴리우레탄 피막코팅층(10) 사이에 바인더로서 폴리우레탄 접착 필름(20)이 개재된 구성을 도시하는 단면도이다. 종래의 인조피혁은 기재층(30)과 폴리우레탄 피막코팅층(10) 사이에 폴리우레탄 접착필름(20)을 개재시켜, 기개층(30)과 폴리우레탄 피막코팅층(20)을 열에 의해 결합시키지만, 필름 형태의 폴리우레탄을 사용하기 때문에 통기성이 좋지 못하고 탄성 및 벌키감이 저하되는 문제점이 있다.FIG. 1 is a cross-sectional view of a synthetic leather produced according to the prior art, in which a polyurethane
제2도는 본 발명에 따라 제조된 인조피혁의 단면도로서, 기재층(30)과 폴리우레탄 피막코팅층(10) 사이에 바인더로서 저융점 탄성 폴리에스테르 부직포(20’)가 개재된 구성을 도시하는 단면도이다. 본 발명의 봉재공정을 거치지 않는 폴리우레탄 인조피혁은 폴리우레탄 피막코팅층(10), 저융점 탄성 폴리에스테르 부직포(20’), 및 기재층(30)으로 구성되며, 상기 기재층(30)과 기재층 상부의 폴리우레탄 피막 코팅층(10) 사이에 열융착성이 우수한 저융점 탄성 폴리에스테르 부직포(20’)를 개재시켜 기재층(30)과 폴리우레탄 피막코팅층(10)을 결합시킨다.FIG. 2 is a cross-sectional view of a synthetic leather produced according to the present invention, showing a cross-section showing a configuration in which a low melting point elastic polyester nonwoven fabric 20 'is interposed as a binder between a
본 발명에서는 통기성과 탄성이 우수한 열융착 부직포를 제조하고, 이를 바인더로 이용함으로써 통기성과 탄성이 우수한 폴리우레탄 인조피혁을 제조할 수 있다. 본 발명에 따른 인조피혁은 봉재공정을 거치지 않고 제조할 수 있으며, 핫멜트 접착필름을 사용한 종래의 폴리우레탄 인조피혁에 비하여 열접착 후에도 소프트감과 통기성이 우수하고, 탄성이 유지되어 벌키한 쿠션감을 유지할 수 있다. 따라서 신발을 비롯하여 가방, 핸드백, 잡화, 가구 등에 사용될 때, 고품질의 인조피혁 원단을 제공할 수 있다.
In the present invention, a polyurethane artificial leather excellent in breathability and elasticity can be produced by preparing a heat-sealable nonwoven fabric having excellent breathability and elasticity and using it as a binder. The artificial leather according to the present invention can be produced without going through a bar process. Compared to conventional polyurethane artificial leather using a hot-melt adhesive film, the artificial leather according to the present invention has excellent soft feeling and air permeability even after heat bonding and maintains elasticity, have. Therefore, when used in shoes, bags, handbags, miscellaneous goods, furniture, etc., it is possible to provide high quality artificial leather fabrics.
본 발명은 하기의 실시예에 의해 더 잘 이해될 수 있으며, 하기의 실시예는 본 발명의 예시를 위한 것일 뿐 특허청구범위의 보호범위를 제한하고자 하는 것이 아니다.
The present invention can be better understood by the following examples, and the following examples are for illustrative purposes only and are not intended to limit the scope of protection of the claims.
실시예Example
1. 저융점 탄성 폴리에스테르 부직포 제조1. Manufacture of low melting point elastic polyester nonwoven fabric
스펀본드 기기를 이용하여 방사형 부직포를 제조하기 전에, 원료 용융시 도징(Dosing) 투입부 막힘 문제 및 익스트루더(Extruder)에서 발생하는 수분에 의한 가수분해 현상을 줄이기 위해 원료를 건조하였다. 저융점 탄성 폴리에스테르 폴리머를 교반자(agitator)가 있는 열풍 건조 호퍼에서 80℃ 온도에서 3시간 결정화시킨 후, 제습 건조호퍼에서 80℃에서 8시간 건조하여 원료에 남아 있는 잔류 수분을 제거하였다. 건조된 저융점 탄성 폴리에스테르 폴리머의 기본 물성은 IV가 1.0∼1.6 이하, 융점(MP)이 110∼160℃ 범위이고, 수분율이 2,000 ppm 이하이다. 또한, 폴리에스테르 폴리머의 용융지수(MI: Melt Index)는 230℃에서 40g/10min 수준을 보였다.Prior to manufacturing the radial nonwoven fabric by using the spunbond device, the raw material was dried to reduce the clogging problem in the dosing input part when raw material is melted and the hydrolysis phenomenon by moisture generated in the extruder. The low melting point elastic polyester polymer was crystallized in a hot air drying hopper with an agitator at a temperature of 80 DEG C for 3 hours and then dried in a dehumidifying drying hopper at 80 DEG C for 8 hours to remove residual water remaining in the raw material. The basic properties of the dried low-melting-point elastic polyester polymer are IV of 1.0 to 1.6 or less, a melting point (MP) of 110 to 160 占 폚, and a water content of 2,000 ppm or less. In addition, the melt index (MI) of the polyester polymer was found to be 40 g / 10 min at 230 占 폚.
라이코필(Reicofil)사 파이로트(Pilot) 스펀본드(Spunbond) 설비를 활용하였으며, 노즐은 폭 500mm, 28HPI(Hole per Inch)이고, 홀 사이즈는 0.25mm인 구금을 사용하였다. 본 실시예에서는 모노(Mono) 형태로 저융점 폴리머를 익스트루더 설비에서 용융시켜 방사하였다. 다수의 방사구금을 통해 방사된 필라멘트를 노즐부 양쪽에서 분사되는 330℃의 고온의 공기에 의해 연신시켰으며 컨베이어 벨트상에 적층하여 100g/m2인 부직포 웹을 얻었다.
Reicofil Pilot Spunbond equipment was used and the nozzle was a 500 mm wide, 28 HPI (hole per inch) hole and a hole size of 0.25 mm. In the present embodiment, the low melting point polymer was melted in the extruder facility in a mono form and spun. The filaments spun through a plurality of spinnerets were drawn by hot air at 330 ° C. jetted from both nozzle portions and laminated on a conveyor belt to obtain a nonwoven web of 100 g / m 2.
2. 비교예에 사용될 핫멜트 접착필름 제조2. Production of hot-melt adhesive film for use in Comparative Example
상기의 저융점 탄성 폴리에스테르 부직포 제조방법과 같이 원료를 건조한 후 익스트루더 설비에서 용융시킨 후 T-다이를 이용하여 두께 50μm 핫멜트 접착필름을 제조하였다.
The raw material was dried in the same manner as in the above-mentioned low melting point elastic polyester nonwoven fabric manufacturing method, and melted in an extruder facility, and then a hot-melt adhesive film having a thickness of 50 μm was prepared using a T-die.
3. 인조피혁 제조 및 물성측정3. Manufacture of artificial leather and measurement of physical properties
건식법에 따라 하기와 같은 방법으로 실시예 및 비교예의 인조피혁을 제조하고, 인조피혁에 대해 기체투과도 및 탄성모듈러스를 측정하고 그 결과를 표 1에 기재하였다.
The artificial leathers of Examples and Comparative Examples were prepared by the following method according to the dry method, and the gas permeability and elastic modulus of the artificial leather were measured, and the results are shown in Table 1.
실시예Example 1 One
상기 실시예에서 예시한 대로 이형지 위에 건식 피막용 폴리우레탄을 도포한 후, 적정 온도에서 가온 건조하여 경화시키고, 상기 경화된 폴리우레탄 피막만 남기고 이형지를 제거한 후, 상기 저융점 탄성 폴리에스테르 부직포 밑에 깔고, 압력 30kgf 하에서 1분 동안 가압하여 원단과 합포하여 인조피혁을 제조하였다.
The polyurethane for dry film coating is coated on the release paper as illustrated in the above examples, and the resultant is heated and dried at an appropriate temperature to be cured. After removing the release paper leaving only the cured polyurethane coating film, the release paper is laid under the low melting point elastic polyester non- , Under a pressure of 30 kgf for 1 minute to prepare artificial leather.
비교예Comparative Example 1 One
저융점 탄성 폴리에스테르 부직포 대신 상기에서 제조한 핫멜트 접착필름을 적용한 것을 제외하고는 실시에 1과 동일하게 진행하여 인조피혁을 제조하였다.
The artificial leather was produced in the same manner as in Example 1 except that the hot melt adhesive film prepared above was used instead of the low melting point elastic polyester nonwoven fabric.
[표 1][Table 1]
상기 물성은 하기와 같은 방법으로 측정된다. The physical properties are measured in the following manner.
*기체 투과도: 걸리 덴소미터(Gurley densometer)를 이용하여 JIS P8117에 따라 측정하였다.Gas permeability: Measured according to JIS P8117 using a Gurley densometer.
*탄성 모듈러스 (Elastic Modulus): ASTM D882법에 따라 인장속도를 300m/min로 설정하고 100% 변형률까지 연신시키고, 동일한 인장속도에서 0% 변형률로 복귀시킨 뒤, 하기 식(1)에 의해 수치화하였다.Elastic Modulus: The tensile rate was set at 300 m / min according to the ASTM D882 method, and the strain was stretched to 100% strain. The strain was returned to 0% strain at the same tensile rate and then quantified by the following equation (1) .
Elastic Modulus E = σ / ε ------------------- 식(1)Elastic Modulus E =? /? - Equation (1)
여기서, σ = 외부 응력, ε = 변형 길이
Where σ = external stress, ε = strain length
상기 표 1에서, 본 발명의 실시예 1에 따라 폴리우레탄 인조피혁에 저융점 폴리에스테르 탄성 부직포를 적용한 경우가, 핫멜트 접착필름을 적용한 비교예 1의 인조피혁 대비 기체 투과도가 월등히 높고 탄성 모듈러스 값이 낮은 것을 확인할 수 있다. 즉, 본 발명에 따라 제조된 폴리우레탄 인조피혁은 종래기술 대비 통기성과 탄성이 우수한 효과를 갖는 것이다.
In Table 1, the case where the low-melting-point polyester elastic nonwoven fabric was applied to the polyurethane artificial leather according to Example 1 of the present invention was superior to that of the artificial leather of Comparative Example 1 using the hot-melt adhesive film and the elastic modulus value Can be confirmed. That is, the polyurethane artificial leather produced according to the present invention has an excellent effect of breathability and elasticity compared to the prior art.
본 발명의 단순한 변형 내지 변경은 이 분야의 통상의 지식을 가진 자에 의하여 용이하게 실시될 수 있으며, 이러한 변형이나 변경은 모두 본 발명의 영역에 포함되는 것으로 볼 수 있다.It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
상기 저융점 탄성 폴리에스테르 부직포는 기재층과 폴리우레탄 피막 코팅층을 결합시키는 바인더로서 고유점도(IV)가 1.0∼1.6, 융점(MP)이 110℃∼160℃, 수분율이 9,900∼10,100 ppm인 저융점 폴리에스테르 결정성 수지로 제조되는 것을 특징으로 하는 폴리우레탄 인조피혁.
The base layer 30 and the polyurethane coating layer 10 are bonded to each other by using a low melting point elastic polyester nonwoven fabric 20 'between the base layer 30 and the polyurethane coating layer 10 as a binder nonwoven fabric or a hot- Lt; / RTI >
The low-melting-point elastic polyester nonwoven fabric is a binder for bonding a base layer and a polyurethane coating layer. The binder has a low melting point (IV) of 1.0 to 1.6, a melting point (MP) of 110 to 160 ° C and a moisture content of 9,900 to 10,100 ppm A polyurethane artificial leather characterized by being made of a polyester crystalline resin.
(IV) of from 1.0 to 1.6, a melting point (MP) of from 110 to 160 占 폚, a moisture content of from 9,900 to 10,100 wherein the low-melting-point elastic polyester nonwoven fabric is made of a low-melting-point polyester crystalline resin.
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