KR100478129B1 - Manufacturing method of breathable waterproof fabric - Google Patents

Manufacturing method of breathable waterproof fabric Download PDF

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KR100478129B1
KR100478129B1 KR1019960068847A KR19960068847A KR100478129B1 KR 100478129 B1 KR100478129 B1 KR 100478129B1 KR 1019960068847 A KR1019960068847 A KR 1019960068847A KR 19960068847 A KR19960068847 A KR 19960068847A KR 100478129 B1 KR100478129 B1 KR 100478129B1
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moisture
waterproof fabric
inorganic salt
moisture permeability
permeable waterproof
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KR1019960068847A
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Korean (ko)
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KR19980050078A (en
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양래청
문성진
김금곤
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주식회사 효성
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0063Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial 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
    • D06N3/14Artificial 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
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10Repellency against liquids
    • D06M2200/12Hydrophobic properties
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N2209/00Properties of the materials
    • D06N2209/14Properties of the materials having chemical properties
    • D06N2209/142Hydrophobic

Abstract

본 발명은 투습성을 향상시키기 위하여 평균 직경이 3 내지 5 미크론 정도로 미세하게 분쇄한 무기염인 염화나트륨을 분산시킨 폴리우레탄을 이용하여 건식코팅하고, 따뜻한 물로 무기염을 녹여내서 미세한 기공을 형성시켜 내수압과 투습도 양쪽 모두를 향상시킨 투습방수 직물의 제조에 관한 것으로 무기염의 입자크기와 첨가량을 조절하면 미세기공의 크기와 밀도를 조절할 수 있고 내수압과 투습성이 우수한 투습방수 직물을 제조할 수 있다.In order to improve moisture permeability, the present invention is dry-coated using polyurethane dispersed in sodium chloride, which is an inorganic salt finely ground to an average diameter of 3 to 5 microns, and melts the inorganic salt with warm water to form fine pores. The present invention relates to the manufacture of a moisture-permeable waterproof fabric having improved moisture permeability. By controlling the particle size and the amount of the inorganic salt, it is possible to control the size and density of the micropores and to produce a moisture-proof waterproof fabric having excellent water pressure and moisture permeability.

Description

투습방수직물의 제조방법Manufacturing method of breathable waterproof fabric

본 발명은 투습성이 뛰어난 투습방수포의 제조방법에 관한 것으로, 더욱 상세하게는 극세섬유를 이용하여 제직한 마이크로 파이버직물에 미세하게 분쇄한 무기염을 분산시킨 폴리우레탄을 이용하여 건식코팅하고 따뜻한 물로 무기염을 녹여내 미세한 기공을 형성시켜 내수압과 투습도 모두를 향상시킨 투습방수직물의 제조방법에 관한 것이다.The present invention relates to a method for producing a moisture-permeable waterproof fabric having excellent moisture permeability, and more specifically, dry coating using a polyurethane dispersed in a finely crushed inorganic salt in a microfiber fabric woven using ultrafine fibers and inorganic with warm water. The present invention relates to a method for manufacturing a moisture-permeable waterproof fabric in which salts are dissolved to form fine pores to improve both water pressure and moisture permeability.

투습방수 직물은 비나 눈과 같은 외부의 물은 통과시키지 않고 인체에서 발생하는 수증기를 통과시키는 유용한 성질로 인하여 우의, 스키웨어, 스포츠웨어 등의 스포츠의류 분야에서 널리 응용되는 직물로써, 코팅법이나 라미네이션법에 의해 투습피막을 적층시켜 제조된다. 이와같이 직물의 표면에 투습막을 갖는 투습성 방수직물은 사용약제 및 제조공법에 따라 미세공을 갖는 유공질과 미세공이 없는 무공질로 나눌 수 있다.Water-permeable waterproof fabric is a fabric widely applied in sports clothing fields such as rainwear, ski wear, sportswear, etc. due to its useful property of passing water vapor generated in the human body without passing external water such as rain or snow. It manufactures by laminating | stacking a moisture permeable film by the method. Thus, the moisture-permeable waterproof fabric having a moisture-permeable membrane on the surface of the fabric can be divided into porous and microporous nonporous with micropores according to the drug and manufacturing method.

일반적으로 유공질의 투습피막은 박표면에 수증기가 외부로 발산 가능한 정도의 연속된 미세공(0.5 ∼ 5㎛)을 갖기 때문에, 투습성은 우수하나 내구성이 떨어지는 약점을 갖는다. 이에 반해 무공질의 투습피막은 내구성은 우수하나 투습성이 불충분한 경우가 많다. 또한, 연속된 미세공을 갖는 유공질의 투습피막은 충분한 투습성능과 방수성능을 갖지만 실제 의류로 봉제하여 착용시험을 해보면 의류 투습막 쪽에 결로가 되어 투습성능이 현저히 저하되는 단점이 있다.In general, the porous moisture-permeable coating has excellent microscopic moisture permeability but poor durability because it has continuous micropores (0.5 to 5 μm) in the thin surface to allow water vapor to emanate to the outside. On the other hand, the porous moisture-permeable coating is excellent in durability but often insufficient in moisture permeability. In addition, the porous moisture-permeable membrane having a continuous micropores has a sufficient moisture-permeable performance and waterproof performance, but when the sewing test by sewing with real clothing, there is a disadvantage that the moisture-permeable performance is significantly reduced due to condensation on the side of the clothing moisture-permeable membrane.

그리고, 투습방수직물 제조방법으로는 건식코팅법과 습식코팅법이 있는데, 습식코팅법의 경우 응고욕의 물과 용매의 치환 과정 중에 미세기공이 생겨 투습도가 양호하나, 건식코팅법의 경우는 용매가 직접 휘발하므로 미세기공이 존재하지 않는 관계로 습식코팅에 비해 투습도가 떨어지는 단점이 있다.In addition, there are dry coating method and wet coating method for preparing a moisture-permeable waterproof fabric. In the wet coating method, moisture permeability is good due to micropores generated during the substitution process of water and solvent in a coagulation bath. Due to the direct volatilization, there is a disadvantage in that the moisture permeability is lower than that of the wet coating since the micropores do not exist.

종래에 알려져 있는 투습방수직물의 제조방법으로는, 국내 공개특허 94-15084호에는 건식코팅법으로 포지표면에 수지코팅액으로 형성된 무공성 필름을 형성시킬 때, 천연콜라겐을 첨가시키는 방법이 개시되어 있다. 이 방법은 투습성과 결로방지 효과가 있다고 제안되어 있지만, 무공성 필름이므로 투습성이 습식코팅에 비하여 떨어지고, 첨가된 천연 콜라겐의 작용으로 내수압도 일정한 한계를 가지게 된다.As a known method for manufacturing a moisture-permeable waterproof fabric, Korean Patent Laid-Open Publication No. 94-15084 discloses a method of adding natural collagen when forming a nonporous film formed of a resin coating liquid on a surface of a paper by a dry coating method. . This method is proposed to have a moisture permeability and condensation prevention effect, but because it is a non-porous film, the moisture permeability is lower than that of the wet coating, and the water pressure is also limited by the action of the added natural collagen.

또, 국내공개특허 94-703274호는 습식코팅법에 관한 것으로, 포지 표면에 수지코팅액으로 팽윤성 필름층을 형성시켜 높은 내수압과 투습도를 갖는 투습방수직물을 얻는 방법이 개시되어 있다. 그러나 이러한 습식코팅법은 생산공정상 많은 폐수를 발생시키고 일정기간 응고시켜야 하므로 생산성이 떨어지는 문제점이 있다.In addition, Korean Patent Publication No. 94-703274 relates to a wet coating method, and a method of obtaining a water-permeable waterproof fabric having a high water pressure and moisture permeability by forming a swellable film layer with a resin coating liquid on the surface of the paper. However, such a wet coating method has a problem in that productivity is reduced because a large amount of wastewater is generated in the production process and needs to be solidified for a certain period of time.

따라서, 본 발명은 공정이 간단하고 제작 원가를 줄일 수 있는 건식코팅법을 사용하면서 투습성을 향상시키기 위해서 평균 직경이 3 내지 5 미크론 정도로 미세하게 분쇄한 무기염인 염화나트륨을 분산시킨 폴리우레탄을 이용하여 건식 코팅하고, 따뜻한 물로 무기염을 녹여내 미세한 기공을 형성시켜 내수압과 투습도 양쪽 모두를 향상시킨 투습방수직물의 제조방법을 제공하는 것이다.Therefore, the present invention uses a polyurethane dispersed with sodium chloride, which is an inorganic salt finely ground to an average diameter of 3 to 5 microns in order to improve moisture permeability while using a dry coating method that can simplify the process and reduce manufacturing costs. It provides a method of manufacturing a moisture-permeable waterproof fabric, which is dry-coated, and melts inorganic salts with warm water to form fine pores to improve both water pressure and moisture permeability.

본 발명에 따른 투습방수포 직물을 제조하기 위해서는 단사섬도가 1 데니어 이하의 섬도를 가진 극세섬유는 어느 것이나 이용가능하다.In order to manufacture the moisture-permeable waterproof fabric of the present invention, any one of ultrafine fibers having a fineness of 1 denier or less may be used.

본 발명에서 폴리우레탄 코팅액은 건식폴리우레탄 60 내지 75 중량%, 무기염 6 내지 8 중량%, 가교제 3 내지 4중량%, 안료 0.6 내지 0.8 중량% 및 톨루엔 18 내지 23중량%로 조성되는 것이 바람직하고, 나이프 코팅기를 이용하여 직물표면에 간극 0.1mm가 되도록 코팅한다. 이것을, 130℃에서 1분간 처리하여 건식피막을 형성시킨 후, 80℃의 물을 통과시켜 무기염을 용해시키면, 무기염의 평균직경과 같은 크기의 미세기공의 형성이 가능하게 된다.In the present invention, the polyurethane coating liquid is preferably composed of 60 to 75% by weight of dry polyurethane, 6 to 8% by weight of inorganic salt, 3 to 4% by weight of crosslinking agent, 0.6 to 0.8% by weight of pigment and 18 to 23% by weight of toluene. Use a knife coater to coat the fabric surface with a gap of 0.1mm. This is treated for 1 minute at 130 ° C. to form a dry film, and then passed through water at 80 ° C. to dissolve the inorganic salt, whereby formation of fine pores having the same size as the average diameter of the inorganic salt is possible.

본 발명에서 코팅액에 첨가하는 무기염의 농도가 15중량% 이상일 때에는 코팅액의 제조 자체가 어려울 뿐만 아니라 코팅도 용이하지 않기 때문에 15중량% 미만, 가장 바람직하게는 6 내지 8 중량%가 좋다.When the concentration of the inorganic salt added to the coating liquid in the present invention is 15% by weight or more, the production of the coating liquid is not only difficult, but also easy to coat, less than 15% by weight, most preferably 6 to 8% by weight.

이렇게하여 얻어진 본 발명의 투습 방수 직물은 표면이 고르고 촉감이 부드러우며 강인한 피막형성이 가능하여 내세탁성도 뛰어나고, 무기염에 의하여 형성된 미세기공이 존재하므로 기존의 건식코팅 투습 방수 직물보다 투습도를 4배 이상 향상 시킬 수 있으며, 내수압 저하도 발생하지 않았다.The moisture-permeable waterproof fabric of the present invention thus obtained has an even surface, is soft to the touch, and can form a strong film, and thus has excellent laundering resistance, and because there are micropores formed by inorganic salts, the moisture permeability is four times higher than that of the conventional dry-coated moisture-permeable waterproof fabric. Abnormal improvement can be achieved, and no water pressure drop occurred.

필요에 따라 본 발명의 직물표면에 발수성을 부여하고자 할 경우 하기 표에 제시한 약제를 사용하는 것이 좋으며 이때 픽업을 70% 정도로 유지하며 4% 농도의 약제를 함침처리한 후 100℃에서 1분 정도 건조하고 130℃에서 2분 정도 처리하는 것이 좋다.If necessary, to impart water repellency to the surface of the fabric of the present invention, it is recommended to use the agents shown in the following table. Maintain the pickup at about 70%, impregnate the 4% concentration of the drug, and then dry at 100 ° C for about 1 minute and at 130 ° C for 2 minutes.

본 발명에 의해 제조되는 투습방수포는 건식 코팅법을 사용 하므로써 습식코팅에 비하여 공정이 간단하여 생산비를 절약할 수 있으며, 습식 코팅법과 같이 용매를 사용하지 않으므로 환경오염이 적고 또한, 미세기공을 형성함으로써 투습성이 뛰어나며, 무기염의 입자의 크기와 첨가량을 조절하면 미세기공의 크기와 밀도를 조절 할 수 있는 잇점을 갖는다.The moisture-permeable waterproof fabric prepared by the present invention can be reduced in production cost by using a simple coating method compared to the wet coating method, and because it does not use a solvent like the wet coating method, there is less environmental pollution, and by forming micropores Excellent moisture permeability, and controlling the size and amount of inorganic salt particles has the advantage of controlling the size and density of micropores.

이하 실시예 및 비교예를 들어 본 발명에 대하여 상세히 살펴보고자 하나, 하기 실시예에 의하여 그 범주가 제한되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples, but the scope is not limited by the following Examples.

실 시 예Example

경사와 위사 모두 나일론 70D/68F 의 실을 사용하여 직물을 제직한다. 제직된 직물을 정련제로 모노폴과 수산화 나트륨을 사용하여 110℃에서 30 분간 처리한 후, 탈수, 건조과정을 거친다. 발수제로 Persistol 0.3% 용액을 사용하여 픽업률을 70%로 유지하면서 약제를 흡수시킨 후 100℃로 예비처리하여 130℃에서 2분간 처리하였다. 건식폴리우레탄 100부, 염화나트륨 10부, 가교제 5부, 안료 1부, 톨루엔 30부의 중량비율로 코팅액을 제조한 후 나이프 코팅기를 이용하여 간극 0.1mm로 코팅한 후 130℃에서 1분간 처리하여 건식피막을 형성시키고, 80℃의 물을 통과시켜 무기염을 용해시키고 건조하여 투습방수포를 제조한 후 결과를 표 1에 나타내었다.Both warp and weft yarns are woven using nylon 70D / 68F threads. The woven fabric is treated with monopol and sodium hydroxide for 30 minutes at 110 ° C, followed by dehydration and drying. Persistol 0.3% solution was used as a water repellent to absorb the drug while maintaining the pick-up rate at 70% and then pretreated to 100 ℃ was treated for 2 minutes at 130 ℃. 100 parts of dry polyurethane, 10 parts of sodium chloride, 5 parts of crosslinking agent, 1 part of pigment, 30 parts of toluene were prepared and coated with a 0.1 mm gap using a knife coater, and then treated at 130 ° C. for 1 minute to dry film. Formed, passed through water at 80 ℃ dissolving inorganic salts and dried to prepare a moisture-permeable waterproof foam and the results are shown in Table 1.

비 교 예Comparative Example

경사와 위사 모두 나일론 70D/68F의 실을 사용하여 직물을 제직한다. 제직된 직물을 정련제로 모노폴과 수산화나트륨을 사용하여 110℃에서 30 분간 처리한 후, 탈수, 건조과정을 거친다. 발수제로 Persistol 0.3% 용액을 사용하여 픽업률을 70%로 유지하면서 약제를 흡수시킨 후 100℃로 예비처리하여 130℃에서 2분간 처리하였다. 건식폴리우레탄 100부, 가교제 5부, 안료 1부, 톨루엔 30부의 비율로 코팅액을 제조한 후, 나이프 코팅기를 이용하여 간극이 0.1mm가 되도록 코팅한 후, 130℃에서 1분간 처리하여 건식 피막을 형성시켜 투습방수포를 제조한 후 결과를 표 1에 나타내었다.Both warp and weft yarns are woven using nylon 70D / 68F threads. The woven fabric is treated with monopol and sodium hydroxide for 30 minutes at 110 ° C, followed by dehydration and drying. Persistol 0.3% solution was used as a water repellent to absorb the drug while maintaining the pick-up rate at 70% and then pretreated to 100 ℃ was treated for 2 minutes at 130 ℃. After preparing a coating solution at a ratio of 100 parts of dry polyurethane, 5 parts of crosslinking agent, 1 part of pigment, and 30 parts of toluene, the coating solution was coated with a knife coater so that the gap was 0.1 mm, and then treated at 130 ° C. for 1 minute to dry film. After forming a moisture-permeable waterproof foam is shown in Table 1 the results.

표 1Table 1

[ 물성 평가 방법 ][Property evaluation method]

실시예와 비교예에 있어서 물성은 다음 방법으로 평가하였다.In Examples and Comparative Examples, physical properties were evaluated by the following method.

(1) 투 습 도 : JIS Z - 0208 법(1) moisture permeability: JIS Z-0208 method

(2) 내 수 압 : JIS L - 1092 법(2) water pressure: JIS L-1092 method

(3) 위의 표 1의 자료값은 5회 시험 평균치이다.(3) The data in Table 1 above is the average of five tests.

Claims (3)

평균직경 3 내지 5 미크론 정도로 미세하게 분쇄한 무기염을 첨가한 폴리우레탄을 이용하여 건식코팅하고, 따뜻한 물로 무기염을 녹여내어 미세한 기공을 형성시키는 것을 특징으로 하는 투습방수직물의 제조방법.Method of producing a moisture-permeable waterproof fabric, characterized in that the dry coating using a polyurethane with a finely ground inorganic salt with an average diameter of 3 to 5 microns, to dissolve the inorganic salt in warm water to form fine pores. 제 1항에 있어서, 상기 무기염은 염화나트륨을 사용하는 것을 특징으로 하는 투습방수직물의 제조방법.The method according to claim 1, wherein the inorganic salt is sodium chloride. 제 1항의 방법에 의해 제조되는 투습방수 직물.Water-permeable waterproof fabric produced by the method of claim 1.
KR1019960068847A 1996-12-20 1996-12-20 Manufacturing method of breathable waterproof fabric KR100478129B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930007832A (en) * 1991-10-11 1993-05-20 원본미기재 Method for Enhancing Dehydration of Concentrated Sewage Sludge and Dewatering of Sewage Sludge with Relatively High Solid Content
KR940015084A (en) * 1992-12-08 1994-07-20 하기주 Manufacturing method of moisture permeable waterproof cloth
KR960007596A (en) * 1994-08-31 1996-03-22 피터 지. 스트링거 Novel physical form of dihydro-2,3-benzodiazepine derivatives
KR970062177A (en) * 1995-12-18 1997-09-12 백영배 Manufacturing method of waterproof breathable fabric with excellent moisture permeability using dry coating method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR930007832A (en) * 1991-10-11 1993-05-20 원본미기재 Method for Enhancing Dehydration of Concentrated Sewage Sludge and Dewatering of Sewage Sludge with Relatively High Solid Content
KR940015084A (en) * 1992-12-08 1994-07-20 하기주 Manufacturing method of moisture permeable waterproof cloth
KR960007596A (en) * 1994-08-31 1996-03-22 피터 지. 스트링거 Novel physical form of dihydro-2,3-benzodiazepine derivatives
KR970062177A (en) * 1995-12-18 1997-09-12 백영배 Manufacturing method of waterproof breathable fabric with excellent moisture permeability using dry coating method

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