KR100238333B1 - Manufacturing method of a permeat and waterproof fabric - Google Patents

Manufacturing method of a permeat and waterproof fabric Download PDF

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KR100238333B1
KR100238333B1 KR1019950047710A KR19950047710A KR100238333B1 KR 100238333 B1 KR100238333 B1 KR 100238333B1 KR 1019950047710 A KR1019950047710 A KR 1019950047710A KR 19950047710 A KR19950047710 A KR 19950047710A KR 100238333 B1 KR100238333 B1 KR 100238333B1
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emulsion
composition
coating
resin
moisture
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KR1019950047710A
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KR970062174A (en
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양정한
박광우
정인만
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구광시
주식회사코오롱
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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
    • 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
    • D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
    • 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
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/10—Repellency against liquids
    • D06M2200/12—Hydrophobic properties
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/02—Moisture-responsive characteristics
    • D10B2401/021—Moisture-responsive characteristics hydrophobic

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

본 발명은 투습성과 내수압이 우수하며 촉감이 부드러운 투습방수포의 제조방법에 관한 것으로서,The present invention relates to a method for producing a moisture-permeable waterproof foam excellent in moisture permeability and water pressure resistance,

친수성(hydrophilic) 폴리옥시테트라메틸렌글리콜(PTMG)/폴리옥시프로필렌글리콜(PPG) 80~90%와 소수성(hydorphobic) PPG/에틸렌글리콜(EG)/톨루엔디이소시아네이트(TDI) 10~20%의 블랜디형 w/o에멀젼 폴리우레탄수지를 사용함을 특징으로 하며,80% to 90% hydrophilic polyoxytetramethylene glycol (PTMG) / polyoxypropylene glycol (PPG) and 10 to 20% blendy of hydrophobic PPG / ethylene glycol (EG) / toluene diisocyanate (TDI) It is characterized by using a w / o emulsion polyurethane resin,

이러한 본 발명에 의하면, 기존의 아니온 디스퍼전형 w/o 에멀젼 수지를 사용하는 것에 비해 에멀젼 형성성이 우수하고 투습도 및 내수압이 훨씬 우수하며 촉감 또한 우수할 뿐만아니라 커얼링 등의 결점이 없는 투습방수포를 짧은 챔버길이의 건조기에서 양산 가능하게 된다.According to the present invention, compared to using the conventional anionic disperse w / o emulsion resin, the emulsion formability is excellent, the moisture permeability and water pressure resistance are excellent, the touch is also excellent, and there are no defects such as curling. The tarp can be mass produced in a short chamber length dryer.

Description

투습방수포지의 제조방법Manufacturing method of breathable waterproof foam

본 발명은 투습성과 내수압이 우수하며 촉감이 부드러운 투습 방수포의 제조방법에 관한 것이다.The present invention relates to a method for producing a moisture-permeable tarp excellent in moisture permeability and water resistance.

종래의 투습방수포는 폴리우레탄 수지를 습식방법으로 형성시키거나 아니온 디스퍼션 형(anionic dispersion type)의 w/o(Water/Oil: 수성/유성) 에멀젼(emulsion) 폴리우레탄 수지를 이용하여 나일론 원단위에 건식코팅하여 다단건조에 의해 톨루렌과 물을 증발하여 미세기공(micro-pore)을 형성시킨 것이 주종을 이루고 있다. 그러나 습식방법은 내압, 투습성이 만족스럽지 못하고 공해문제와 제품의 촉감이 딱딱한 단점이 있으며, 아니온 디스퍼션형의 w/o 에멀젼 폴리우레탄 수지를 사용한 건식코팅방법은 투습성은 우수하나 내수압 및 촉감이 다소 떨어지며 건조속도가 매우 늦어 대량생산시 생산능률이 저하되며, 품질관리의 어려움이 있다.Conventional moisture-permeable waterproof foams are made of nylon by using a wet method to form a polyurethane resin or an anionic dispersion type w / o (water / oil) emulsion polyurethane resin. The main coating is to dry micro-pore by evaporating toluene and water by multi-stage drying. However, the wet method is not satisfactory in pressure resistance and moisture permeability, and there is a problem of pollution and the feel of the product is hard.The dry coating method using anion dispersion type w / o emulsion polyurethane resin has excellent moisture permeability but has high water pressure and feel. There is a slight fall and the drying speed is very slow, so the production efficiency is lowered during mass production, and there is a difficulty in quality control.

종래의 투습방수포에 이용한 건식다공형 수지는 아디프산/1.4부틸렌글리콜/1.6 헥사메틸렌글리콜형 폴리에스테르 폴리올의 화학적 조성을 갖는 아니온 디스퍼션형의 w/o 에멀젼 폴리우레탄수지를 사용하고 있다.The dry porous resin used in the conventional moisture-permeable waterproof cloth uses an anion dispersion w / o emulsion polyurethane resin having a chemical composition of adipic acid / 1.4 butylene glycol / 1.6 hexamethylene glycol type polyester polyol.

위의 약제를 사용하여 에멀젼을 만들려면 pH조절을 위하여 암모니아가 필요하므로 악취로 인한 작업상의 어려움이 있고 건조속도가 매우 늦으며, 게다가 이러한 생산에 적합한 건조기를 보유한 업체도 현실적으로 없는 실정이다. 또한 셀의 크기가 3~5㎛로 비교적 크며, 개방셀 스폰지 형(open cell sponge type)으로 내수압 2000~1500㎜H2O, 투습도 7000~8000g/㎡·24hr의 범위를 갖는 것으로서 내수압과 투습도가 매우 우수한 편이 못된다.In order to make an emulsion using the above drugs, ammonia is required for pH control, so there is a difficulty in operation due to odor and the drying speed is very slow, and in addition, there are practically no companies having a dryer suitable for such production. In addition, the cell size is 3 ~ 5㎛ relatively large, open cell sponge type (waterproof pressure and water vapor permeability with the range of water pressure 2000 ~ 1500㎜H 2 O, moisture permeability 7000 ~ 8000g / ㎡ · 24hr. Not very good.

따라서 본 발명은 기존의 아니온 디스퍼젼형 w/o 에멀젼 수지의 상기한 바와 같은 제반 문제점을 감안하여 보다 개량된 특성의 투습방수포를 제조하는 방법을 제공하는 데에 주된 목적이 있다.Accordingly, the present invention has a main object to provide a method for producing a moisture-permeable waterproof foam of more improved properties in view of the above problems of the conventional anion dispersion type w / o emulsion resin.

상기한 목적을 달성하기 위한 본 발명에 의하면 w/o 에멀젼 폴리우렌탄수지를 사용한 코팅액으로 섬유포지를 코팅하여 투습방수포를 제조함에 있어서, 상기 w/o 에멀젼 폴리우레탄 수지로서 친수성(hydrophilic) 폴리옥시테트라메틸렌글리콜(PTMG)/폴리옥시프로필렌글리콜(PPG) 80~90%와 소수성(hydorphobic) PPG/에틸렌글리콜(EG)/톨루엔디이소시아네이트(TDI) 10~20%의 블랜디형 w/o 에멀젼 폴리우레탄수지(이하, "블랜딩형 w/o 에밀젼 폴리우레탄수지"라 약함)를 사용함을 특징으로 하는 투습방수포의 제조방법이 제공된다.According to the present invention for achieving the above object in the manufacture of a water-permeable waterproof coating by coating a fiber cloth with a coating liquid using a w / o emulsion polyurethane resin, a hydrophilic polyoxy as the w / o emulsion polyurethane resin Blended w / o emulsion poly with 80-90% of tetramethylene glycol (PTMG) / polyoxypropylene glycol (PPG) and 10-20% of hydrophobic (hydorphobic) PPG / ethylene glycol (EG) / toluene diisocyanate (TDI) Provided is a method for producing a moisture-permeable waterproof fabric characterized by using a urethane resin (hereinafter, abbreviated as "blended w / o emulsion polyurethane resin").

본 발명에 따라 블랜딩형 w/o 에밀젼 수지를 사용하게 되면 기존의 아니온 디스퍼전형 w/o 에밀젼 수지를 사용하는 것에 비해 에멀젼 형성성이 우수하고 기공이 1~3㎛로 기존건식다공형의 기공크기인 3~5㎛보다 훨씬 적으며 셀의 분포가 조밀하고 균일한 미소겔화형 (microgellation type)이므로 투습도 및 내수압이 훨씬 우수하며 촉감 또한 우수한 투습방수포를 제조하는 것이 가능하게 된다. 또한 수지분자간의 상호인력이 적게 작용되어 커얼링(curling) 등의 결점이 없다. 그 뿐만 아니라 완전히 건조되어 수분이 빠져나가고 기공이 형성되는데 걸리는 시간이 기존 3분에서 1.5분으로 줄어 짧은 챔버 길이의 건조기에서도 양산 가능하다. 이런 이유는 본 발명에 따르는 블랜딩형 w/o 에밀젼 수지가 기존수지에 비해 MEK함량을 높일 수 있고, 이 함량이 높아짐으로써 건조속도가 빠르게 되는 것이라고 볼 수 있다. 또한 후발수 공정이 없이도 내수압 3000㎜H2O 이상이 유지된다.According to the present invention, when the blended w / o emulsion resin is used, the emulsion formation is excellent and the pore is 1 to 3 μm, compared to the conventional anion disperse w / o emulsion resin. It is much smaller than the pore size of 3 ~ 5㎛ and the cell distribution is dense and uniform microgellation type (microgellation type), so the moisture permeability and water pressure is much better and it is possible to manufacture the excellent moisture-permeable waterproof foam. In addition, there is no drawback such as curling due to less interaction between resin molecules. In addition, the time it takes to completely dry out of moisture and form pores is reduced from 3 minutes to 1.5 minutes, so it can be mass-produced in a short chamber length dryer. The reason for this is that the blended w / o emulsion resin according to the present invention can increase the MEK content compared to the conventional resin, and it can be seen that the drying rate is increased by increasing this content. In addition, the water pressure 3000mmH 2 O or more is maintained even without the post-water repellent process.

본 발명을 그 바람직한 제조예를 들어 설명하면 다음과 같다.The present invention will be described with reference to the preferred production examples as follows.

먼저 합성섬유포지의 편면을 불소계 발수제 2~5g/L의 수용액을 발수처리한다. 이어서 순차적으로 건식방법을 사용 조성(Ⅰ), 조성(Ⅱ)의 PU수지조성물을 사용하여 2개의 수지층을 코팅한다. 즉, 예를 들어 발수된 포지의 상면에 플로어팅 나이프(floating knife)를 사용하여 조성(Ⅰ)의 PU수지조성물을 코팅하여 제 1층을 형성시킨다. 이때, 폴리에틸렌이민은 접착강도를 증진시켜 위해 박리강도의 저하를 막는 작용을 한다.First, one side of the synthetic fiber cloth is subjected to a water repellent treatment with an aqueous solution of 2 to 5 g / L of a fluorine-based water repellent. Subsequently, two resin layers are coated using the PU resin composition of composition (I) and composition (II) sequentially using a dry method. That is, for example, a first resin is formed by coating a PU resin composition of composition (I) using a floating knife on the upper surface of the water repellent forge. At this time, the polyethyleneimine serves to prevent a drop in peel strength in order to increase the adhesive strength.

상기 제 1층 위에 다음 조성물(Ⅱ)을 오버롤 나이프를 사용하여 건식방법으로 코팅하여 제 2층을 형성시킨다.The following composition (II) is coated on the first layer by a dry method using an overall knife to form a second layer.

이때, 제 1층의 두께는 5~10㎛로 하고 제 2층의 두께는 30~40㎛으로 하는 것이 좋다. 만일 코팅층의 두께가 상기 범위를 벗어나게 되면 투습방수효과가 나빠지거나 촉감이 딱딱하게 될 수 있다. 또한 건조에는 조성물(Ⅰ)의 코팅후와 조성물(Ⅱ)의 코팅후에 각각 선택증발법으로 낮은 온도에서 온도를 차츰 승온시키면서 다단건조하는 방법을 채택하는 것이 바람직히다.At this time, it is good that the thickness of a 1st layer shall be 5-10 micrometers, and the thickness of a 2nd layer may be 30-40 micrometers. If the thickness of the coating layer is out of the above range, the moisture permeable waterproof effect may be worsened or the touch may be hard. In addition, it is preferable to adopt the method of multistage drying, gradually increasing the temperature at low temperature by the selective evaporation method after coating of composition (I) and after coating of composition (II), respectively.

이하, 본 발명을 비한정적인 실시예의 방법으로 보다 상세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail by way of non-limiting examples.

[실시예 1]Example 1

경사는 나일론 70/24, 위사는 나일론 75/24를 2합하여 에어텍스쳐링(air-texturing)가공한 나일론 가공사를 사용하여 평직으로 제직하고(밀도: 190본/인치), 이 직물을 통상의 방법으로 정련, 염색, 수세, 건조하여 열고정시킨 후 불소계 발수제 3중량% 수용액에서 통상의 방법으로 발수처리를 하였다. 발수처리된 원단위에 상기 조성물(Ⅰ)을 플로오팅 나이프로 코팅하여 제 1층을 형성시킨 후 40℃에서부터 차츰 승온하여 80~100℃, 150℃온도로 하여 1분 30초간 다단건조를 실시하였다. 상기 제 1층 위에 조성(Ⅱ)의 PU수지조성물을 나이프 오버롤(knife over roll) 방식으로 코팅하여 제 2층을 20~30㎛ 두께로 코팅하여 제1층과 같은 건조방법으로 응고(coagulation) 시켰다. 이와 같이 하여 만들어진 투습방수포를 내수압, 투습도, 박리강도, 촉감 등을 측정하여 표 1에 제시하였다.The warp yarn is nylon 70/24, and the weft yarn is woven into plain weave using a nylon processed yarn which is air-texturing with a combination of nylon 75/24 (density: 190 bones / inch). After scouring, dyeing, washing with water, drying and heat setting, the water-repellent treatment was performed in a conventional manner in a 3 wt% aqueous solution of a fluorine-based water repellent. The composition (I) was coated on a water-repellent raw unit with a floating knife to form a first layer, and then gradually heated up at 40 ° C. to 80 to 100 ° C. and 150 ° C. for 1 minute and 30 seconds of drying. The PU resin composition of composition (II) was coated on the first layer by a knife over roll method, and the second layer was coated with a thickness of 20 to 30 μm and coagulated by the same drying method as the first layer. . The moisture-permeable waterproof fabric made in this way was measured in the water pressure, moisture permeability, peel strength, and the like and presented in Table 1.

[비교예 1]Comparative Example 1

실시예 1과 같은 방법으로 준비된 원단에 하기의 조성물(Ⅲ)을 2회코팅(1회 플로어팅 코팅, 1회 나이프 오버롤 코팅)하고 60℃, 100℃, 150℃에서 3분간 다단 건조하였다. 이와 같이 하여 만들어진 투습방수포를 내수압, 투습도, 박리강도, 촉감 등을 측정하여 표 1에 제시하였다.To the fabric prepared in the same manner as in Example 1, the following composition (III) was coated twice (once floor coating, once knife overall coating) and dried in multiple stages at 60 ° C, 100 ° C, and 150 ° C for 3 minutes. The moisture-permeable waterproof fabric made in this way was measured in the water pressure, moisture permeability, peel strength, and the like and presented in Table 1.

[비교예 2]Comparative Example 2

코딩에 나이프 오버를 코팅 1회(후도 : 30㎛)만 실시한 것을 제외하고는 비교예 1과 동일한 절차를 반복하였다.The same procedure as in Comparative Example 1 was repeated except that the coating was subjected to only one knife-over coating (thickness: 30 μm).

[표 1]TABLE 1

Claims (4)

w/o 에밀젼 폴리우레탄수지를 사용한 코팅액으로 섬유포지를 코팅하여 투습방수포를 제조함에 있어서, 상기 w/o 에밀젼 폴리우레탄 수지로서 친수성 폴리옥시테트라메틸렌글리콜(PTMG)/폴리옥시프로필렌글리콜(PPG) 80~90%와 소수성 PPG/에틸렌글리콜(EG)/톨루엔디이소시아네이트(TDI) 10~20%의 블랜디형 w/o에멀젼 폴리우레탄(PU)수지를 사용함을 특징으로 하는 투습방수포의 제조방법.In preparing a moisture-permeable waterproof coating by coating a fiber cloth with a coating liquid using a w / o emulsion polyurethane resin, as the w / o emulsion polyurethane resin, hydrophilic polyoxytetramethylene glycol (PTMG) / polyoxypropylene glycol (PPG ) 80 to 90% of hydrophobic PPG / ethylene glycol (EG) / toluene diisocyanate (TDI) 10 ~ 20% of the blended w / o emulsion polyurethane (PU) resin manufacturing method characterized in that the use of . 제1항에 있어서, 하기 조성물(Ⅰ)을 코팅한 후 다단건조하고, 하기 조성물(Ⅱ)을 코팅한 후 다단건조함을 특징으로 하는 투습방수포의 제조방법:The method according to claim 1, wherein the composition (I) is coated and then dried in multiple stages, and the following composition (II) is coated and then dried in multiple stages: 제2항에 있어서, 조성물(Ⅰ)의 코팅두께는 5~10㎛, 조성물(Ⅱ)의 코팅두께는 30~40㎛로 함을 특징으로 하는 투습방수포의 제조방법.The method according to claim 2, wherein the coating thickness of the composition (I) is 5 to 10 µm and the coating thickness of the composition (II) is 30 to 40 µm. 제2항에 있어서, 다단건조의 건조조건은 40℃로부터 150℃까지 승온시키면서 건조함을 특징으로 하는 투습방수포의 제조방법.The method of claim 2, wherein the drying conditions of the multi-stage drying are dried while raising the temperature from 40 ° C to 150 ° C.
KR1019950047710A 1995-12-08 1995-12-08 Manufacturing method of a permeat and waterproof fabric KR100238333B1 (en)

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