KR100829459B1 - A porous, moisture-permeable and water-proof cloth, and a method for production of the same - Google Patents
A porous, moisture-permeable and water-proof cloth, and a method for production of the same Download PDFInfo
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- KR100829459B1 KR100829459B1 KR1020070030918A KR20070030918A KR100829459B1 KR 100829459 B1 KR100829459 B1 KR 100829459B1 KR 1020070030918 A KR1020070030918 A KR 1020070030918A KR 20070030918 A KR20070030918 A KR 20070030918A KR 100829459 B1 KR100829459 B1 KR 100829459B1
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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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- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
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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
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
- D06M15/277—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof containing fluorine
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Abstract
Description
도 1은 다공형 투습방수 원단의 제조를 위한 공정도이다. 1 is a process chart for the production of porous permeable waterproof fabric.
본 발명은 다공형 투습방수 원단 및 그 제조 방법에 관한 것이다. The present invention relates to a porous moisture-permeable fabric and a manufacturing method thereof.
투습방수 원단은 뛰어난 착용감을 부여하고, 물의 침투를 최대한 억제하면서 습기 방출을 통해 체온 및 체형 유지에 필요한 고기능성 내의류, 땀의 신속한 방출과 더불어 경량, 고신축성 등을 요구하는 스포츠웨어에 적당하다. 특히, 최근 스포츠웨어 시장이 급격히 성장되면서 투습방수 기능 의류에 대한 수요가 급격히 증가하고 있는 추세이다. 투습방수 원단의 제조에 있어서, 습식 코팅법은 높은 생산단가, 낮은 생산성, 고품질의 발현에의 한계 등의 문제점이 있으며, 라미네이팅 코팅법은 생산 공정이 복잡하고 제조 원가가 비싼 단점이 있다. 또한, 종래의 건식 무공형 또는 다공형 코팅법은 유기 용제(유기 화합물), 유기 용제 분산형 발수제 등을 사용하기 때문에 인체에 유해할 뿐만 아니라 수질/대기 오염을 야기시킬 수 있다. 한편, 건식 무공형 코팅법에 의한 투습방수 원단은 다습한 상태에서 투습 능력 을 발휘하기 때문에 실제 착용시 가벼운 운동 상태에서는 땀을 원활히 배출하지 못할 수도 있다. The moisture-permeable waterproof fabric is suitable for sportswear that provides excellent fit and suppresses the penetration of water while releasing moisture, and requires high-performance innerwear needed for maintaining body temperature and body shape, and quick release of sweat, as well as light weight and high elasticity. In particular, with the recent rapid growth of the sportswear market, the demand for moisture-permeable waterproof clothing is rapidly increasing. In the production of moisture-permeable waterproof fabrics, the wet coating method has problems such as high production cost, low productivity, and limitation to high quality expression. Laminating coating method has a disadvantage in that the production process is complicated and the manufacturing cost is high. In addition, conventional dry non-porous or porous coating methods use organic solvents (organic compounds), organic solvent-dispersed water repellents, and the like, and are not only harmful to humans but can also cause water / air pollution. On the other hand, the moisture-permeable waterproof fabric by the dry non-porous coating method may exhibit a sweat permeability in a humid state may not be able to discharge sweat smoothly in a light exercise state when actually worn.
한국 등록특허공보 제10-286604호(출원번호: 10-1997-0025097)에는 「폴리우레탄계 수지, 유기 용제(메틸에틸케톤/톨루엔), 경화제(헥사메틸렌 디이소시아네이트) 및 유기 용제 분산형 발수제(디메틸포름아미드 등의 유기 용제에 플루오로카본이 분산된 것)를 필수적으로 함유하는 유중수분산(W/O)형 에멀젼 폴리우레탄 수지 코팅액으로 섬유포지를 코팅하여 다공형 투습방수포를 제조하는 방법」이 기재되어 있다. 또한, 한국 등록실용신안공보 제20-363401호(출원번호: 20-2004-0017136)에는 「섬유 기재 상에 유기 용제 분산형 발수제를 함유하며 유중수분산형(W/O형) 에멀젼 폴리우레탄 수지를 주성분으로 하는 다공형 필름이 양말단에 이소시아네이트기를 갖는 폴리우레탄 접착제에 의해 라미네이팅된 다공형 투습방수포」가 기재되어 있다. 상기 선행 기술들은 유기 용매(유기 화합물)의 사용으로 인하여 작업 환경에 노출되어 있는 근무자의 인체에 매우 유해하고, 수질/대기 오염을 야기시킬 수 있다. 이러한 문제는 지구 생태계 유지를 위한 월드와이드 글로벌 에코-시스템(worldwide global eco-system)의 확대 및 휘발성 유기 화합물(volatile organic compound, VOC)의 규제 강화가 예견되고 있어 반드시 해결되어야 할 과제이다. Korean Patent Publication No. 10-286604 (Application No .: 10-1997-0025097) discloses "polyurethane resin, organic solvent (methyl ethyl ketone / toluene), curing agent (hexamethylene diisocyanate) and organic solvent dispersion type water repellent (dimethyl) A method for producing a porous moisture-permeable waterproof coating by coating fiber cloth with a water-in-oil dispersion (W / O) emulsion polyurethane resin coating liquid containing essentially a fluorocarbon dispersed in an organic solvent such as formamide. It is described. In addition, Korean Utility Model Publication No. 20-363401 (Application No .: 20-2004-0017136) discloses a water-in-oil (W / O type) emulsion polyurethane resin containing an organic solvent dispersion type water repellent agent on a fiber substrate. The porous moisture-permeable waterproof cloth whose porous film as a main component is laminated by the polyurethane adhesive which has an isocyanate group in a sock end "is described. These prior arts are very harmful to the human body of workers exposed to the working environment due to the use of organic solvents (organic compounds) and can cause water / air pollution. This problem is a challenge that must be addressed because of the expansion of the global global eco-system and the regulation of volatile organic compounds (VOCs) to maintain the global ecosystem.
본 발명은 종래 기술의 문제점(유기 용제의 사용으로 인한 대기/수질 오염의 야기)을 극복하기 위하여 유기 용제의 사용 없이 다공형 투습방수 원단을 제조하는 방법을 제공하는 것을 주목적으로 한다. 또한, 본 발명은 이와 같은 제조 방법에 의해 제조되는, 투습성, 방수성, 통기성 등이 우수할 뿐만 아니라 결로(結露) 현상[결로(結露) 현상은 어떤 물체의 표면 온도가 그 물체에 접하는 공기의 이슬점(대기 중의 수증기가 식어서 이슬이 맺히기 시작할 때의 온도) 이하일 때 물체의 표면에 이슬이 맺히는 현상으로서, 곰팡이가 발생하는 원인이 됨]을 방지하여 착용시 쾌적성과 기능성이 탁월한 다공형 투습방수 원단을 제공하는 것을 목적으로 한다. The present invention aims to provide a method of manufacturing a porous moisture-permeable waterproof fabric without using an organic solvent in order to overcome the problems of the prior art (causing air / water pollution due to the use of an organic solvent). In addition, the present invention is not only excellent in moisture permeability, waterproofness, breathability, etc. produced by such a manufacturing method, but also dew condensation phenomenon (dew condensation phenomenon is the dew point of the air that the surface temperature of an object is in contact with the object) It is a phenomenon that dew forms on the surface of an object when the water vapor in the air cools and starts to form dew, which causes mold to occur. The purpose is to provide.
본 발명은 유기 용제의 사용 없이 다공형 투습방수 원단을 제조하는 방법으로서, 하기 공정 (a) 내지 (h)를 포함하는 방법을 제공한다: (a) 제직, 정련, 표백 및 염색 단계로 이루어진 원단 준비 공정; (b) 불소계 발수제를 사용하여 함침(dipping)법에 의해 상기 준비된 원단을 발수 처리하는 공정; (c) 상기 발수 처리된 원단을 120∼180 ℃의 열풍으로 열고정하는 공정; (d) 상기 열고정된 원단을 40∼160 ℃의 온도, 80∼100 ㎏·f/㎠의 닙(nip) 압력 및 30∼60 m/분의 처리 속도의 조건하에서 캘린더링(calendering)하는 공정; (e) 상기 캘린더링된 원단의 일면에 나이프 오버 롤(knife over roll) 코팅법 또는 플로우팅 나이프(floating knife) 코팅법에 의해 폴리우레탄 코팅 조성물을 1회 또는 수 회 코팅하는 공정; (f) 상기 코팅된 원단을 160∼180 ℃에서 각각 5분 이상 건조 및 경화하는 공정; (g) 상기 건조 및 경화된 원단을 50∼80 ℃의 물에 침지하여 수용성 폴리우레탄을 용출시키는 공정; 및 (h) 상기 수용성 폴리우레탄이 용출된 원단을 100∼180 ℃에서 건조한 후, 120∼180 ℃에서 불소계 발수제를 사용하여 발수 가공하여, 미세 다 공질 폴리우레탄 막이 형성된 다공형 투습방수 원단을 수득하는 공정. The present invention provides a method for producing a porous moisture-permeable fabric without using an organic solvent, the method comprising the following steps (a) to (h): (a) Fabric consisting of weaving, refining, bleaching and dyeing steps Preparation process; (b) water repellent treatment of the prepared fabric by a dipping method using a fluorine-based water repellent; (c) heat-setting the water-repellent treated fabric with hot air at 120 to 180 ° C .; (d) calendering the heat-set fabric under conditions of a temperature of 40 to 160 ° C., a nip pressure of 80 to 100 kg · f / cm 2 and a processing speed of 30 to 60 m / min. ; (e) coating the polyurethane coating composition once or several times on one surface of the calendered fabric by knife over roll coating or floating knife coating; (f) drying and curing the coated fabric at 160 to 180 ° C. for at least 5 minutes each; (g) immersing the dried and cured fabric in water at 50 to 80 ° C. to elute the water soluble polyurethane; And (h) drying the fabric from which the water-soluble polyurethane is eluted at 100 to 180 ° C., followed by water repellent treatment at 120 to 180 ° C. using a fluorine-based water repellent to obtain a porous moisture-permeable fabric having a fine porous polyurethane membrane. fair.
본 발명에 있어서 "원단"이라는 용어는 제직 또는 편직에 의해 제조되는 물품, 부직포, 섬유상 웹(fibrous web) 등을 모두 포함하는 의미로 사용된다. 본 발명에 따른 유기 용제의 사용 없이 다공형 투습방수 원단을 제조하는 방법에 있어서, 제직(製織), 정련(精練), 표백(漂白) 및 염색(染色) 단계로 이루어진 원단 준비 공정은 원단의 전처리 공정으로서 공지된 통상의 방법을 이용하여 실시할 수 있다. 이와 같은 준비(전처리) 공정을 거친 원단은 불소계 발수제(예컨대, 플루오로카본, 퍼플루오로알킬 아크릴레이트의 공중합체 등)를 사용하여 함침(dipping)함으로써 발수 처리된다. In the present invention, the term "fabric" is used to include all articles made by weaving or knitting, nonwoven fabrics, fibrous webs, and the like. In the method for producing a porous moisture-permeable fabric without using the organic solvent according to the present invention, the fabric preparation process consisting of weaving, refining, bleaching and dyeing step is pretreatment of the fabric It can carry out using a conventional method well-known as a process. The fabric which has undergone such preparation (pretreatment) is subjected to water repellent treatment by dipping using a fluorine-based water repellent (for example, a fluorocarbon, a copolymer of perfluoroalkyl acrylate, etc.).
발수 처리 공정 이후에, 발수 처리된 원단을 120∼180 ℃의 열풍으로 열고정한다. 열풍 온도가 120℃ 미만인 경우에는 건조가 제대로 이루어지지 않아 양질의 코팅을 실현하기 어렵고, 열풍 온도가 180℃를 초과하는 경우에는 과도한 건조로 인해 원단에 열경화가 발생하여 촉감이 딱딱하게 된다. After the water repellent treatment step, the water-repellent treated fabric is heat-set with hot air at 120 to 180 ° C. If the hot air temperature is less than 120 ° C it is difficult to achieve a good coating because the drying is not done properly, if the hot air temperature exceeds 180 ° C, the heat curing occurs in the fabric due to excessive drying, the touch becomes hard.
열고정 공정 이후에, 열고정된 원단을 40∼160 ℃의 온도, 80∼100㎏f/㎠의 닙(nip) 압력 및 30∼60 m/분의 처리 속도의 조건하에서 캘린더링(calendering)한다. 캘린더링하는 이유는 코팅하기 이전에 원단 표면에 평활성(planarization)을 부여하기 위함이다. 캘린더링의 온도, 닙(nip) 압력, 처리 속도에 관한 상기 수치한정에 대한 임계적 의의는 다음과 같다. 캘린더링 온도가 40℃ 미만인 경우에는 원단의 평활성이 저하되어 코팅 품질의 저하를 초래하고, 캘린더링 온도가 160℃를 초과하는 경우에는 과도한 온도로 인하여 원단의 색상과 촉감에 변화를 초래한다. 또한, 닙(nip) 압력이 80 ㎏·f/㎠ 미만인 경우에는 원단에 적정한 장력을 부여하기 어려워 불균일한 캘린더링이 발생하고, 닙(nip) 압력이 100 ㎏·f/㎠를 초과하는 경우에는 과도한 압착에 의한 열경화에 의해 원단 형태의 변형이 발생할 수 있다. 또한, 처리 속도가 30 m/분 미만인 경우에는 생산성의 저하를 초래하고, 처리 속도가 60 m/분을 초과하는 경우에는 과도한 처리 속도로 인한 불균일한 캘린더링이 발생할 수 있다. After the heat setting process, the heat set fabric is calendered under the conditions of a temperature of 40 to 160 ° C., a nip pressure of 80 to 100 kgf / cm 2 and a processing speed of 30 to 60 m / min. . The reason for calendering is to impart planarization to the fabric surface prior to coating. The critical significance of the numerical limitations regarding calendering temperature, nip pressure, and treatment rate is as follows. If the calendering temperature is less than 40 ℃ the smoothness of the fabric is lowered to cause a decrease in coating quality, if the calendering temperature exceeds 160 ℃ it causes a change in color and feel of the fabric due to excessive temperature. In addition, when the nip pressure is less than 80 kg · f / cm 2, it is difficult to impart proper tension to the fabric, so that uneven calendaring occurs, and when the nip pressure exceeds 100 kg · f / cm 2. Deformation of the form of the fabric may occur due to thermal curing by excessive compression. In addition, when the processing speed is less than 30 m / min, a decrease in productivity, and when the processing speed exceeds 60 m / min, uneven calendaring due to excessive processing speed may occur.
캘린더링 공정 이후에, 캘린더링된 원단의 일면에 나이프 오버 롤(knife over roll) 코팅법 또는 플로우팅 나이프(floating knife) 코팅법에 의해 폴리우레탄 코팅 조성물을 1회 또는 수 회 코팅한다. 폴리우레탄 코팅 조성물은 0 중량부 초과 10 중량부 이하의 물(또는 0 중량부 초과 10 중량부 이하의 물과 0 중량 부 초과 10 중량부 이하의 불소계 발수제)에 1∼10 중량부의 탄산칼슘(CaCO3)을 분산시킨 후 30∼50 중량부의 수용성 폴리우레탄을 혼합하여 교반하면서, 70 중량부의 폴리우레탄 에멀젼과 7∼9 중량부의 이소프로필 알콜(이소프로필 알콜은 표면 장력을 저하시키고 유동성(흐름성)을 개선하는 역할을 함)과 2∼6 중량부의 폴리이소시아네이트 가교제의 혼합 용액을 첨가하여 혼합하고, 등량의 물로 희석된 0 중량부 초과 1 중량부 이하의 실리콘계 소포제를 첨가하여 혼합하고, 80 메쉬(mesh) 여과기로 여과하여 제조된다(중량부는 폴리우레탄 에멀젼 70 중량부를 기준으로 함). 상기 폴리우레탄 코팅 조성물에 포함되는 탄산칼슘(CaCO3)의 입도(粒度)는 1∼40 ㎛인 것이 바람직하고, 상기 폴리우레탄 코팅 조성물은 코팅용 백색 토너, 실리카, 슬립 보조제 등을 추가로 포함할 수 있다. 한편, 나이프 오버 롤 코팅법에 의해 코팅하는 경우, 코팅 도공 로울러의 정점에 밀착된 원단의 상면과 나이프간 간격을 150∼400 ㎛로 하는 것이 바람직하다. After the calendering process, the polyurethane coating composition is coated once or several times on one surface of the calendered fabric by knife over roll coating or floating knife coating. The polyurethane coating composition may contain 1 to 10 parts by weight of calcium carbonate (CaCO) in more than 0 parts by weight and 10 parts by weight or less of water (or more than 0 parts by weight and 10 parts by weight or less of water and 0 parts by weight or more and 10 parts by weight or less of fluorine-based water repellent). 3 ) After dispersing, the mixture is stirred by mixing 30-50 parts by weight of a water-soluble polyurethane, while 70 parts by weight of a polyurethane emulsion and 7-9 parts by weight of isopropyl alcohol (isopropyl alcohol lowers the surface tension and flows (flows) And a mixed solution of 2 to 6 parts by weight of a polyisocyanate crosslinking agent are added and mixed, and a mixture of 80 deg. mesh) is prepared by filtration with a filter (weight parts based on 70 parts by weight of the polyurethane emulsion). The particle size of calcium carbonate (CaCO 3 ) included in the polyurethane coating composition is preferably 1 to 40 μm, and the polyurethane coating composition may further include a white toner for coating, silica, a slip aid, and the like. Can be. On the other hand, when coating by the knife over roll coating method, it is preferable to make the space | interval between the upper surface of the raw material closely adhered to the vertex of a coating coating roller, and a knife to 150-400 micrometers.
코팅 공정 이후에, 코팅된 원단을 160∼180 ℃에서 각각 5분 이상 건조 및 경화한다. 이는 최적의 성막성(成膜性)을 부여하기 위함이다. 예컨대 160℃ 미만의 온도에서 경화되거나 5분 미만의 기간 동안 경화되는 경우에는 원단의 일면에 다공성 막의 형성이 미흡하거나 볼륨감이 저하되어 궁극적으로 원단의 투습성 등의 물성에 악영향을 미친다. After the coating process, the coated fabric is dried and cured at 160 to 180 ° C. for at least 5 minutes each. This is to give optimum film-forming property. For example, when cured at a temperature of less than 160 ℃ or for a period of less than 5 minutes, the formation of a porous membrane on one side of the fabric is insufficient or the volume is lowered ultimately adversely affects the physical properties such as moisture permeability of the fabric.
건조 및 경화 공정 이후에, 건조 및 경화된 원단을 50∼80 ℃(바람직하게는, 약 70 ℃)의 물에 침지(浸漬)하여 수용성 폴리우레탄을 용출시킨다. 상기 50∼80 ℃의 물 온도 범위는 수용성 폴리우레탄의 용출을 최적화하기 위한 조건이다. After the drying and curing process, the dried and cured fabric is immersed in water at 50 to 80 ° C. (preferably about 70 ° C.) to elute the water soluble polyurethane. The water temperature range of 50 to 80 ° C. is a condition for optimizing the dissolution of the water-soluble polyurethane.
용출 공정 이후에, 수용성 폴리우레탄이 용출된 원단을 100∼180 ℃에서 건조한 후, 120∼180 ℃에서 불소계 발수제를 사용하여 발수 가공하여, 미세 다공질 폴리우레탄 막이 형성된 다공형 투습방수 원단을 수득한다. After the elution step, the fabric from which the water-soluble polyurethane is eluted is dried at 100 to 180 ° C., and then subjected to a water repellent at 120 to 180 ° C. using a fluorine-based water repellent to obtain a porous moisture-permeable fabric having a fine porous polyurethane membrane.
본 발명에 따른 유기 용제의 사용 없이 다공형 투습방수 원단을 제조하는 방법에 의해 제조된 다공형 투습방수 원단은 0.3∼15 미크론 범위의 공극을 가지는 미세 다공질 폴리우레탄 막이 형성되어 있으며, 내수압(ISO 0811 정수압에 의함)이 2000 mm H2O 이상이고, 투습도(ASTM E96 CaCl2법에 의함)가 5000 g/㎡·24시간 이상이다. 상기 미세 다공질 폴리우레탄 막의 두께는 50∼100 ㎛(바람직하게는, 약 50 ∼70 ㎛)인 것이 바람직하다. 또한, 상기 미세 다공질 폴리우레탄 막의 공극은 2∼6 미크론 범위가 80% 이상 존재하는 것이 바람직하다. The porous moisture-permeable fabric prepared by the method for producing the porous moisture-permeable fabric without using the organic solvent according to the present invention is formed with a fine porous polyurethane membrane having a pore in the range of 0.3 to 15 microns, and has a water pressure (ISO 0811). Hydrostatic pressure) is 2000 mm H 2 O or more, and water vapor transmission rate (by ASTM E96 CaCl 2 method) is 5000 g / m 2 · 24 hours or more. It is preferable that the thickness of the said microporous polyurethane membrane is 50-100 micrometers (preferably about 50-70 micrometers). In addition, the pores of the microporous polyurethane membrane are preferably present in a range of 2 to 6 microns of 80% or more.
하기 실시예를 통하여 본 발명을 보다 상세히 설명하고자 한다. 그러나, 하기 실시예는 본 발명을 예시하기 위한 것일 뿐이므로, 본 발명의 범주가 하기 실시예에 국한되는 것으로 해석되어서는 아니된다. 따라서, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자(이른바 "당업자" 또는 "평균적 기술자")는 첨부된 특허청구범위에 기재된 사항으로부터 도출되는 기술적 사상의 범위 내에서 하기 실시예의 다양한 변형, 수정 및 응용이 가능하다는 것을 이해할 수 있을 것이다. Through the following examples will be described in more detail the present invention. However, the following examples are only for illustrating the present invention, and the scope of the present invention should not be construed as being limited to the following examples. Accordingly, one of ordinary skill in the art to which the present invention pertains (so-called "man skilled person" or "average skilled person") is not limited to various modifications of the following examples within the scope of the technical idea derived from the matters described in the appended claims. It will be appreciated that modifications and applications are possible.
실시예Example
공지된 통상의 방법에 의해 전처리된 원단을 발수 처리한 후, 열풍 건조기를 사용하여 약 165℃의 열풍으로 열고정하였다. 이어서, 열고정된 원단을 약 130℃의 온도, 약 90 kg·f/㎠의 닙(nip) 압력 및 약 50 m/분의 처리 속도의 조건하에서 캘린더링(calendering)한 후, 캘린더링된 원단의 일면에 나이프 오버 롤 코팅법에 의해 폴리우레탄 코팅 조성물[폴리우레탄 코팅 조성물은 10 중량부의 물 혹은 10 중량부의 불소계 발수제에 2 중량부의 탄산칼슘(CaCO3)을 분산시킨 후 30 중량부의 수용성 폴리우레탄을 혼합하여 교반하면서, 70 중량부의 폴리우레탄 에멀젼과 7 중량부의 이소프로필 알콜과 6 중량부의 폴리이소시아네이트 가교제의 혼합 용액을 첨가하여 혼합하고, 등량의 물로 희석된 0.5 중량부의 실리콘계 소포제를 첨가하여 혼합하고, 80 메쉬(mesh) 여과기로 여과하여 제조됨(중량부는 폴리우레탄 에멀젼 70 중량부를 기준으로 함)]을 약 300㎛의 두께로 코팅하였다. 이어서, 코팅된 원단을 약 170℃에서 각각 5분 동안 건조 및 경화한 후, 약 70℃의 물에 침지(浸漬)하여 수용성 폴리우레탄을 용출시켰다. 이어서, 수용성 폴리우레탄이 용출된 원단을 약 175 ℃에서 건조한 후, 약 170℃에서 불소계 발수제를 사용하여 발수 가공하여, 미세 다공질 폴리우레탄 막이 형성된 다공형 투습방수 원단을 수득하였다. After the pretreated fabric was water-repellent treated by a conventional method known in the art, it was heat-set with hot air at about 165 ° C. using a hot air dryer. The heat-set fabric was then calendered under the conditions of a temperature of about 130 ° C., a nip pressure of about 90 kg · f / cm 2 and a processing speed of about 50 m / min, followed by calendered fabric Polyurethane coating composition by knife over roll coating method on one side of [Polyurethane coating composition is 30 parts by weight of water-soluble polyurethane after dispersing 2 parts by weight of calcium carbonate (CaCO 3 ) in 10 parts by weight of water or 10 parts by weight of fluorine-based water repellent While mixing and stirring, 70 parts by weight of a polyurethane emulsion, 7 parts by weight of isopropyl alcohol and 6 parts by weight of a polyisocyanate crosslinking agent are added and mixed, 0.5 parts by weight of a silicone antifoam diluted with an equal amount of water is added and mixed. , Prepared by filtration with an 80 mesh filter (parts based on 70 parts by weight of polyurethane emulsion)] was coated to a thickness of about 300 μm. Subsequently, the coated fabric was dried and cured at about 170 ° C. for 5 minutes, respectively, and then immersed in water at about 70 ° C. to elute the water soluble polyurethane. Subsequently, the fabric from which the water-soluble polyurethane was eluted was dried at about 175 ° C., and then water-repelled at about 170 ° C. using a fluorine-based water repellent to obtain a porous moisture-permeable fabric having a fine porous polyurethane membrane.
다공형 투습방수 원단은 내수압(ISO 0811 정수압에 의함)이 약 2300 mm H2O이고, 투습도(ASTM E96 CaCl2법에 의함)가 약 9000 g/㎡·24시간이었다. The porous moisture-permeable waterproof fabric had a water resistance (by ISO 0811 hydrostatic pressure) of about 2300 mm H 2 O and a water vapor transmission rate (by ASTM E96 CaCl 2 method) of about 9000 g / m 2 · 24 hours.
본 발명에 따르면, 작업 환경에 노출되어 있는 근무자의 인체에 매우 유해할 뿐만 아니라 대기/수질 오염을 야기시기는 유기 용제(유기 화합물)을 사용하지 않고서도, 투습성, 방수성, 통기성 등이 우수할 뿐만 아니라 결로(結露) 현상을 방지하여 착용시 쾌적성과 기능성이 탁월한 다공형 투습방수 원단을 제조할 수 있다. According to the present invention, the moisture permeability, waterproofness, breathability, etc. are excellent, without using an organic solvent (organic compound) that is not only very harmful to the human body of workers exposed to the working environment but also causes air / water pollution. In addition, it is possible to manufacture a porous moisture-permeable fabric having excellent comfort and functionality when worn by preventing condensation.
또한, 본 발명에 따른 다공형 투습방수 원단은 그 일면에 형성된 0.3∼15 미크론 범위의 공극을 가지는 미세 다공질 폴리우레탄 막의 최적의 성막성(成膜性)으로 인하여 투습성, 방수성, 통기성 등이 우수할 뿐만 아니라 결로(結露) 현상을 방지하여 착용시 쾌적성과 기능성이 탁월하다. In addition, the porous moisture-permeable fabric according to the present invention is excellent in moisture permeability, waterproofness, breathability, etc. due to the optimum film-forming property of the microporous polyurethane membrane having a pore of 0.3 to 15 microns formed on one surface thereof. In addition, it prevents dew condensation and is excellent in comfort and functionality when worn.
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| KR19990057604A (en) * | 1997-12-30 | 1999-07-15 | 전원중 | Manufacturing method of breathable waterproof coating fabric |
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