KR101011247B1 - Breathable and Waterproof fabric and a method of fabricating the same - Google Patents

Abstract

The present invention relates to a moisture-permeable waterproof fabric and a method for manufacturing the same, and specifically, a surface layer made of a fabric layer; A nanofiber nonwoven film on the back surface of the surface layer; And a back layer is formed on the back surface of the nanofiber nonwoven fabric layer, and each layer is formed by lamination. The air permeability is 0.4 to 0.8 cc / cm 2 / sec, water pressure is 7,000 to 12,000 mmH ₂ O, and water vapor transmission rate is 7,000 to It is characterized by 10,000 g / ㎡ / 24hr and moisture resistance of 2 to 7 ㎡ Pa / w. It relates to a moisture-permeable waterproof fabric and a manufacturing method thereof.

Moisture permeability, nanofiber, nonwoven fabric, membrane, membrane, air permeability, moisture permeability

Description

Breathable and waterproof fabric and a method of manufacturing the same {Breathable and Waterproof fabric and a method of fabricating the same}

The present invention relates to a moisture-permeable waterproof fabric and a method for manufacturing the same, and specifically, highly lightweight, excellent in elasticity, feel and durability, having excellent moisture permeability, waterproofness, wind resistance, quick drying and air permeability, and environmentally friendly moisture-permeable waterproof fabric and It relates to a manufacturing method thereof.

In recent years, the development of functional materials is increasing, focusing on health. It began with efforts to give absorbent and hygroscopic properties to synthetic fibers and to make them closer to natural fibers, and nowadays, the development of synthetic fibers having absorption and hygroscopic properties over natural fibers has become a major factor. Among them, the development of highly breathable, waterproof, windproof, quick-drying, air-permeable, and ultra-light, comfortable, comfortable and comfortable fabric means that the meaning of health and refreshment is getting stronger. Demand is also growing.

Among these functional materials, the moisture-permeable waterproof fabric uniformly forms a porous polymer film on the surface of the knitted fabric to prevent rain or water from splashing and permeate, while the sweat from the body is vaporized to discharge to the outside, thereby providing comfort. In addition, a technique for satisfying the emotional performance of the three-dimensional contour, etc. when worn as clothing. Therefore, the moisture-permeable waterproof fabric passes only the water vapor generated from the body, that is, a water vapor size of about 0.0004 μm in diameter, but weave a film with numerous pores, i.e., 0.1 to 10.0 μm, so that water droplets do not pass. By forming on the above, it is possible to realize smooth moisture permeation and excellent waterproofing at the same time.

In particular, the functional outdoor products applied to sports, leisure, travel, such as mountaineering products, training, ski clothes, golf clothes, etc., because the high moisture-permeable waterproof performance is required, the polyurethane coating on the woven fabric to exhibit such characteristics Or a moisture-permeable waterproof fabric prepared by adhering a porous e-PTFE (PolyTetraFluoro Ethylene) film onto a fabric by using wet, dry, or laminating. However, the moisture-permeable waterproof fabric prepared by the above method has a problem in that the manufacturing process is very complicated, the pore distribution is not uniform, and the pore density cannot be easily adjusted, and there is a limit to the application to the elastic fabric. In addition, the fabric is excellent in water resistance, but has a disadvantage in that the ability to maintain a comfortable state by releasing sweat or moisture generated in the body. In particular, the e-PTFE as a carcinogen has been the subject of recent environmental regulations.

In Japanese Patent Laid-Open No. 2006-45716, a polyamide-based hollow core having a plurality of fine pores on the surface of the fiber and having a hollow portion near the center of the fiber, and having a hollow ratio of 25 to 65% by the hollow portion. A moisture-permeable waterproof fabric has been proposed, which is composed of a fiber cloth using at least a portion of a fiber and a resin layer laminated on at least one side of the fiber cloth. However, when using the fabric and the hollow fiber having the micro-pores, there is a problem in the mechanical strength such as tensile strength and wear resistance, and the durability of the friction is low, the fabric is easily damaged.

Further, in Japanese Patent Application Laid-Open No. 2007-186817, a mixed resin solution of a polyester-based resin and a water-soluble polymer is coated on one side of a fiber fabric, followed by drying and washing treatment of the moisture-permeable waterproof fabric. A manufacturing method has been proposed. The moisture-permeable waterproof fabric has a merit of being able to recycle, but there is a possibility that the expression of the moisture-permeable waterproof property is insufficient because there is no pore and there is no air permeability.

In order to solve the above problems, an object of the present invention is to provide a moisture-permeable waterproof fabric having a high moisture permeability, waterproof, windproof, quick-drying and air permeability and a manufacturing method thereof.

In addition, another object of the present invention is to provide an excellent moisture-permeable waterproof fabric and its manufacturing method excellent in stretch, touch and durability.

It is also an object of the present invention to provide a moisture-permeable waterproof fabric and a method of manufacturing the same that can be applied to various applications while the performance is protected and maintained.

In order to achieve the above object, the present invention provides a moisture-permeable waterproof fabric, the surface layer consisting of a fabric layer; A nanofiber nonwoven film on the back surface of the surface layer; And a back layer is formed on the back surface of the nanofiber nonwoven fabric layer, and each layer is formed by lamination. The air permeability is 0.4 to 0.8 cc / cm 2 / sec, water pressure is 7,000 to 12,000 mmH ₂ O, and water vapor transmission rate is 7,000 to It provides a waterproof moisture-permeable fabric, characterized in that 10,000 g / ㎡ / 24hr and the moisture resistance is 2 to 7 m 2 Pa / w.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the surface layer is applied, such as weaving, knitting, or stretch fabric of natural or synthetic fibers.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the air permeability of the nanofiber nonwoven film is 0.8 cc / ㎠ / sec or more.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the water pressure of the nanofiber nonwoven film is more than 10,000 mmH ₂ O.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the water vapor transmission rate of the nanofiber nonwoven film is 10,000 g / ㎡ / 24hr or more.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the pore size of the nanofiber nonwoven film is 0.1 to 1.0 ㎛.

In addition, the present invention is made of the nanofiber non-woven film weight 4 to 7 g / ㎡, thickness 10 to 30 ㎛, tensile strength of 0.2 kgf / inch or more, elongation 70% or more, peel strength 25 kgf / cm or more, porosity Provides a waterproof breathable fabric, characterized in that more than 80%.

In another aspect, the present invention provides a water-permeable waterproof fabric, characterized in that the cross-sectional shape of the nanofiber is made of one or more selected from the group consisting of a circular, heteromorphic cross-section, hollow fiber form and the form of mixing the capsule.

In addition, the present invention, after the laminating method is bonded at 70 to 150 ℃ using a water-curable adhesive of 3 to 30 g / ㎡ powder state, the temperature 30 ± 10 ℃, to increase the moisture curing strength to improve adhesion Provides a moisture-permeable waterproof fabric, characterized in that it is matured at a humidity of 80 ± 10%.

In addition, the present invention provides a moisture-permeable waterproof fabric, characterized in that the bonding method of the laminating method is selected from the dot (Dot) and mesh (Mesh) method.

In addition, the present invention is a method for producing a moisture-permeable waterproof fabric, nanofiber non-woven fabric manufacturing step of nanofibers with a diameter of 70 to 100 nm by the polyurethane is produced in a collector (Web Membrane) form in the collector (Collector) ; And a laminating step of laminating a surface layer on the surface of the prepared nanofiber nonwoven fabric layer by a laminating method. And a backing layer forming step of laminating the backing layer on the back surface of the nanofiber nonwoven fabric layer by a laminating method, such as air permeability of 0.4 to 0.8 cc / cm 2 / sec, water resistance of 7,000 to 12,000 mmH ₂ O, and moisture permeability of 7,000 to 10,000 g / m 2 /. 24hr, the moisture-permeable resistance provides a method for producing a moisture-permeable waterproof fabric, characterized in that 2 to 7 m 2 Pa / w.

In addition, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the surface layer is applied to weaving, knitting, or stretch fabric, such as natural or synthetic fibers.

In another aspect, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the air permeability of the nanofiber nonwoven membrane is 0.8 cc / ㎠ / sec or more.

In addition, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the water pressure of the nanofiber nonwoven film is 10,000 mmH ₂ O or more.

In addition, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the moisture permeability of the nanofiber nonwoven film is 10,000 g / ㎡ / 24hr or more.

In addition, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the pore size of the nanofiber nonwoven film is 0.1 to 1.0 ㎛.

In addition, the present invention is the nanofiber nonwoven film weight 4 to 7 g / ㎡, thickness of 10 to 30 ㎛, tensile strength 0.2 kgf / inch or more, elongation 70% or more, peel strength 25 kgf / cm or more, porosity 80 It provides a method for producing a moisture-permeable waterproof fabric, characterized in that more than%.

In another aspect, the present invention provides a method for producing a moisture-permeable waterproof fabric, characterized in that the cross-sectional shape of the nanofiber is made of one or more selected from the group consisting of circular, heteromorphic cross-section, hollow fiber shape, and the form of mixing the capsule.

In addition, the present invention, after the laminating method is bonded at 70 to 150 ℃ using a water-curable adhesive of 3 to 30 g / ㎡ powder state, the temperature 30 ± 10 ℃, to increase the moisture curing strength to improve adhesion It provides a method of producing a moisture-permeable waterproof fabric, characterized in that the aging at 80 ± 10% humidity.

In another aspect, the present invention provides a method for manufacturing a moisture-permeable waterproof fabric, characterized in that the selected method is selected from the dot (Dot) and mesh (Mesh) method of the bonding method of the laminating method.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

The terms "about "," substantially ", etc. used to the extent that they are used herein are intended to be taken to mean an approximation of, or approximation to, the numerical values of manufacturing and material tolerances inherent in the meanings mentioned, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

As used herein, the term "fabric" is used as a raw material for all garments, and includes all articles manufactured by weaving or knitting, nonwoven fabrics, and fibrous webs.

The moisture-permeable waterproof fabric of the present invention can be produced by laminating with a nanofiber nonwoven fabric and a surface layer. The nanofiber nonwoven fabric is a nanofiber with a diameter of 70 to 100 nm produced by electrospinning polyurethane is produced in a collector (Web Membrane) of 10 to 30 ㎛ thickness in the collector (Collector), weight 4 to 7 g / ㎡, thickness 10 to 30 ㎛ air permeability 0.8 cc / ㎠ / sec or more, water pressure 10,000 mmH ₂ O or more, tensile strength 0.2 kgf / inch or more, elongation rate 70% or more, peeling strength 25 kgf / cm or more, moisture permeability 10,000 g / M 2 / 24hr or more, porosity 80% or more, pore size is preferably 0.1 to 1.0 ㎛. The nanofiber non-woven membrane is hydrophobic (Hydrophobic) is impossible to penetrate the water, the pores with a large specific surface area to quickly discharge the water vapor particles of sweat, numerous nano pores are tens of times smaller than the size of the water droplets waterproof water does not penetrate at all It provides a, and a porous structure to act as a heat insulating material to prevent the cold wind of the outside to maintain the proper body temperature is provided, the bacteria also do not penetrate, antibacterial (Anti-virus) is also provided.

In addition, the nanofiber nonwoven film of the present invention is formed of a thin film of 3,800 km long long fiber nonwoven fabric due to electrospinning, ultra-light, high tensile strength, high durability, excellent elasticity can be more excellent expression. In addition, during spinning, the form of the nanofiber yarn may be formed in a circular shape, a cross-section, or a hollow fiber shape, and the shape of the yarn may be adjusted according to the use such as incorporating a capsule or the like.

1 is a planar SEM photograph (a) and cross-sectional SEM (b) and (c) photographs of a nanofiber nonwoven fabric according to a preferred embodiment of the present invention. Referring to FIG. 1, the planar nanofiber nonwoven fabric plane (a) is a fine nanofibers irregularly entangled, the nonwoven film is formed in the form of a film, it can be seen that very fine compared to the hair 1, the cross section (b) is a thin film Since the pore layer is formed, the cross-sectional area is wide, and the air permeability can be increased. In addition, Figure 1 (c) is an enlarged photograph of the cross section (b) can confirm the form of the pores.

Figure 2 is a cross-sectional view of the waterproof breathable fabric according to an embodiment of the present invention. 2, the moisture-permeable waterproof fabric of the present invention may be composed of a surface layer 110 and nanofiber nonwoven film 130. In addition, a coating layer 150 may be further included on the back surface of the nanofiber nonwoven fabric 130, or a backing layer 170 may be further included to constitute a moisture-permeable waterproof fabric.

The moisture-permeable waterproof fabric configured as described above is preferably air permeability of 0.4 to 0.8 cc / cm 2 / sec or more, water pressure of 7,000 to 12,000 mmH ₂ O, moisture permeability of 7,000 to 10,000 g / m 2 / 24hr, moisture resistance of 2 to 7 m 2 Pa / w Do. The air permeability, water pressure, moisture permeability value is made of a nanofiber nonwoven fabric laminated with the fabric layer is slightly reduced, but expresses excellent moisture permeability waterproofing. In particular, the moisture permeability resistance refers to the degree of resistance to sweat or water vapor discharge, and the moisture permeability of clothing is a value that more accurately indicates the comfort of wearing. The lower the value, the higher the comfort, and the moisture permeability is 7 ㎡ Pa When / w or less, the best comfort is provided.

First, the surface layer 110 is made of natural or synthetic fibers woven, woven, or stretched fabric, water repellent or antifouling treatment may be performed on the fabric layer.

Nanofiber nonwoven film 130 may be laminated on the back surface of the surface layer, by applying a laminating (Laminating) method to the nanofiber nonwoven film 130 using a moisture-curable adhesive in the powder state of 3 to 30 g / ㎡ 70 to 150 After bonding at ℃, it is preferable to mature at a temperature of 30 × 10 ℃, humidity of 80 × 10% to increase the moisture curing strength to improve the adhesion. Because, in the above conditions, when the content of the moisture-curable adhesive is less than 1 g / ㎡, the adhesive force between the fabric and the nanofiber nonwoven film is weak, there is a fear that the sweat-absorbent quick-drying may not be exhibited, if it exceeds 30 g / ㎡, the adhesive back This is because the adhesive bleeds out and wastes the adhesive, and roller marks may appear on the fabric surface. In addition, when the adhesion temperature is less than 70 ℃, the adhesive is not sufficiently melted, there is a risk of non-uniform adhesion, if it exceeds 150 ℃, the viscosity of the adhesive is too low, poor adhesion, soaked on the surface of the first fabric There is concern.

Here, the laminating method is bonded in a dot (dot) or mesh (Mesh) method by varying the shape of the coating roller (Roller) according to the yarn, weight, structure or density of the fabric layer fabric, the dot method on the fabric The adhesive is applied at regular intervals to bond the nonwoven film, which is not only more efficient than the front adhesive method but also excellent in soft touch. On the other hand, the mesh method is a kind of front adhesive method has an advantage of excellent adhesion. In addition, the laminating has an environmentally friendly feature because it proceeds by a moisture-curable adhesive method, so that the loss of the nanofiber nonwoven film is less likely to occur, so that almost no waste water or waste is generated.

Figure 3 is a SEM photograph of the moisture-permeable waterproof fabric cross section according to an embodiment of the present invention. Referring to FIG. 3, the nanofiber nonwoven fabric 130 is laminated on the back surface of the surface layer 110.

The coating layer 150 may be further formed on the rear surface of the nanofiber nonwoven film of the moisture-permeable waterproof fabric. The coating layer 150 may be made of one selected from water-soluble urethane, acrylic, and silicone resin, and is positioned on the rear surface in contact with the skin layer to facilitate absorption of moisture and to reduce damage to and protect the nanofiber membrane.

Finally, the back layer 170 may be further included on the back surface of the nanofiber nonwoven fabric to form a moisture-permeable waterproof fabric. The back layer 170 may be applied to the same fabric as the fabric layer 110 as a back layer in contact with the skin, and nylon glass, nylon brushed paper, polarpolis, tricot, poly brushed paper, etc. may be used depending on the purpose.

Figure 4 is a principle diagram of a waterproof breathable fabric according to an embodiment of the present invention. Referring to Figure 4 (a), the moisture-permeable waterproof fabric is composed of a surface layer 110 and a nanofiber nonwoven film 130, the moisture-permeable waterproof fabric is located on top of the skin layer 200, the water molecules 11 and wind 13 that penetrates from the outside surface layer 110 Moisture (sweat) emitted from the skin layer 200 passes through the nanofiber nonwoven membrane 130 in the form of water vapor and passes through the moisture-permeable waterproof surface layer 110 to feel comfort. In FIG. 4 (b), the nanofiber nonwoven membrane 130 is much finer than the water molecule 11, and the water group 15 shows a shape in which moisture permeability and waterproofness are exerted by smoothly advancing air due to many fine pores that pass well.

Therefore, the method of manufacturing the moisture-permeable waterproof fabric of the present invention may include a nanofiber nonwoven fabric manufacturing step S100, a laminating step S200 and a back layer forming step S300.

As described above, the moisture-permeable waterproof fabric of the present invention is applied to the nonwoven fabric of the nanofiber nonwoven fabric to have excellent air permeability due to microporous and multiporous, and excellent moisture permeability, waterproof, windproof, quick-drying and comfort have.

In addition, the moisture-permeable waterproof fabric of the present invention is made of a nano-fiber non-woven film of the electrospun thin film is bonded with a woven fabric and a water-curable adhesive, ultra-light, stretchy, good touch, high tensile strength with high adhesion strength to a large surface area nanofibers Excellent durability, environmentally friendly effect.

In addition, the moisture-permeable waterproof fabric of the present invention may be formed in a multi-layer according to the use, hygiene health, safety functional material, or as well as comfortable materials applied to functional outdoor products such as mountaineering products, training, ski clothes, or Dyeing is excellent, there is an effect that can be utilized as a marker function material by incorporating discoloration capsules in the nanofiber yarn during spinning.

In addition, the moisture-permeable waterproof fabric of the present invention has the effect of smoothly absorbing moisture by imparting a coating layer, reducing damage to the nanofiber membrane and protecting.

In addition, the moisture-permeable waterproof fabric of the present invention can be applied to various purposes by configuring the back layer fabrics in various ways, there is an effect of improving the fit to fit.

Through the following examples will be described in more detail.

Example 1

The surface layer is made of polyester fabric, and the polyurethane is electrospun on the back surface of the surface layer, and the nanofiber having a diameter of 80 nm is a 15 μm thick nonwoven fabric (Web Membrane) manufactured by a collector. Consisting of 15 ㎛, air permeability of 0.8 cc / ㎠ / sec or more, water pressure 10,000 mmH ₂ O or more, tensile strength 0.2 kgf / inch or more, elongation 70% or more, peel strength 25 kgf / cm or more, moisture permeability 10,000 g / ㎡ / 24hr or more , Nanofiber nonwoven fabric with porosity of more than 80% and pore size of 1.0 μm or less was bonded by dot method at 100 ° C with 10 g / m2 of water-curable adhesive, and aged at temperature of 30 ° C and humidity of 80% to proceed laminating method. A water vapor barrier fabric was prepared.

Example 2

In the same manner as in Example 1, the surface layer of a polyester fabric, a nanofiber nonwoven film on the back surface of the surface layer, and a coating layer forming step of the water-soluble acrylic resin on the back surface of the nanofiber nonwoven film was prepared to prepare a water-permeable waterproof fabric.

Example 3

Same as Example 1, except that the surface layer of the polyester fabric, the nanofiber nonwoven film on the back surface of the surface layer, and the nylon glass fabric on the back surface of the nanofiber nonwoven film back to the laminating process under the same conditions as in Example 1 Proceeding the layer forming step to prepare a moisture-permeable waterproof fabric.

Comparative Example 1

Polyurethane coating on the back side of the polyester fabric fabric to prepare a moisture-permeable waterproof fabric.

Comparative Example 2

A moisture-permeable waterproof fabric was prepared by top coating an e-PTFE film having a porosity of 81% and a thickness of 30 μm on a polyester fabric fabric with hydrophilic polyurethane.

* Test Methods

1. Air permeability-JIS L1096 A (Frazier method)-Test area 20 ㎠, pressure 125 Pa

2. Water pressure resistance-JIS L1092B / KS K 0592 (high water pressure method)

The resistance of the fabric to water leaks and submersions is measured by applying a column of water to the surface of the fabric, measuring the height of the water column until three drops of water are seen, and confirming that the fabric does not penetrate to the height of the water column. It can be seen as the opposite of breathability. The thicker it is, the higher the water pressure level, but the functionality should be both high moisture permeability and water pressure level.

3. Water vapor permeability-JIS L 1099 A1 (calcium chloride method)

The amount of moisture passed through an area of 1 cm 2 for 24 hours is measured.

After measuring the initial weight, it is left in the room temperature and humidity room (24 ℃, 65%), and after 24 hours to determine the degree of moisture escape by measuring the weight.

4. Resistance to evaporative transmission (RET)-ISO 11092 / ASTM E96

Test the breathability / breathability using the water vapor pressure difference under wet conditions. In the upper part where the test specimen is located, 100% saturated water vapor is formed, and the lower part is composed of 40% water vapor in a virtual sweat state, and when steam moves from the upper part (saturated state) to the lower part, an exothermic phenomenon occurs at the lower part. Power is supplied to fill the water vapor as much as the water vapor moved, which means that the greater the amount of power, the better the moisture permeability (more water vapor movement), which is the result of the amount of heat supplied per unit area, so the lower the value, the better the performance. do. Usually, if the moisture permeability is less than 8, the moisture permeability is judged to be good.

5. Tensile Strength-KS K0520 / ASTM 5034 / ISO (EN) 13934

6. Peeling strength (adhesive strength)-KS K0533

7. Thermal Image Measurement

※ Shooting conditions

-Room temperature: 30 ℃

Indoor humidity: 68% RH

Experimental equipment: artificial climate room, infrared thermal imaging camera, skin temperature and humidity meter (8x2 sensors)

(1) Wear the fabric.

(2) Take a picture immediately after entering the artificial climate room and measure the temperature and humidity of the skin and fabric.

(3) After entering the room without movement in the artificial climate room, take a picture 10 minutes later, and measure the temperature and humidity of the skin and fabric.

(4) Work out for 10 minutes.

(5) Five minutes after the end of the exercise, a photograph is taken and the temperature and humidity of the skin and the fabric are measured.

No. division unit Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 One Porosity % 80 or more 80 or more 80 or more 71 - 2 Air permeability cc / ㎠ / sec 0.8 0.6 0.5 0.1 or less - 3 Water pressure mmH ₂ O 7,000 8,500 10,000 10,000 10,000 4 Moisture permeability g / ㎡ / 24hr 9,000 8,000 7,000 5,000 3,000 5 Moisture permeability ㎡ Pa / w 3.50 4.80 5.20 11.62 30.2

As shown in Table 1, the moisture-permeable waterproof fabric produced by the present invention exhibited excellent characteristics compared to Comparative Examples 1 and 2.

5 is a thermal image measurement result after wearing the waterproof breathable fabric according to an embodiment of the present invention. Referring to Figure 5, by measuring the thermal image in order to apply the moisture-permeable waterproof fabric of the present invention to the outdoor article, the color area is significantly reduced compared to Comparative Example 2, so that the sweat is quickly discharged into water vapor after exercise, a pleasant state In order to maintain and maintain the proper temperature of 36.5 ℃ of the human body, it was confirmed that the excellent moisture-permeable waterproof properties by properly adjusting the heat generated in the body.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

1 is a planar SEM photograph (a) and cross-sectional SEM (b), (c) photograph of the nanofiber nonwoven film according to an embodiment of the present invention.

Figure 2 is a cross-sectional view of the waterproof breathable fabric according to an embodiment of the present invention.

Figure 3 is a SEM photograph of the moisture-permeable waterproof fabric cross section according to an embodiment of the present invention.

Figure 4 is a waterproof waterproof principle according to an embodiment of the present invention.

5 is a thermal image measurement result after wearing a waterproof breathable fabric according to an embodiment of the present invention.

DESCRIPTION OF THE RELATED ART [0002]

1: hair

11: water molecule, 13: wind, 15: water vapor

110: surface layer 130: nanofiber nonwoven fabric

150: coating layer, 170: back layer

200: skin layer

Claims (20)

In breathable waterproof fabric, A surface layer consisting of a distal layer; A nanofiber nonwoven film on the back surface of the surface layer; And The back surface of the nanofiber nonwoven film is made of a back layer is included, each layer is made by laminating method, but the air permeability of 0.4 to 0.8 cc / ㎠ / sec, water pressure of 7,000 to 12,000 mmH ₂ O, moisture permeability of 7,000 to 10,000 Waterproofing fabric characterized in that the g / ㎡ / 24hr and the moisture resistance is 2 to 7 m 2 Pa / w. delete The method of claim 1, The nanofiber nonwoven film is moisture permeable waterproof fabric, characterized in that the air permeability is more than 0.8 cc / ㎠ / sec. The method of claim 1, The nanofiber nonwoven film is moisture-permeable waterproof fabric, characterized in that the water pressure is 10,000 mmH ₂ O or more. The method of claim 1, The nanofiber nonwoven membrane is moisture-permeable fabric, characterized in that the water vapor transmission rate of 10,000 g / ㎡ / 24hr or more. The method of claim 1, The nanofibrous nonwoven membrane is a moisture-permeable waterproof fabric, characterized in that the pore size is 0.1 to 1.0 ㎛. The method of claim 1, The nanofiber nonwoven film is composed of weight 4 to 7 g / ㎡, thickness 10 to 30 ㎛, tensile strength of 0.2 kgf / inch or more, elongation 70% or more, peel strength 25 kgf / cm or more, porosity 80% or more Breathable waterproof fabric. delete The method of claim 1, The laminating method is bonded at 70 to 150 ℃ using a water-curable adhesive of 3 to 30 g / ㎡ in the powder state, the temperature 30 ± 10 ℃, humidity 80 ± 10% to increase the moisture curing strength to improve adhesion Breathable waterproof fabric, characterized in that made by aging. delete In the manufacturing method of waterproof moisture-permeable fabric, Nanofiber non-woven fabric manufacturing step wherein the nanofibers 70 to 100 nm in diameter by electrospinning the polyurethane is produced in the form of a non-woven film (Web Membrane) in the collector (Collector); And A laminating step formed by laminating a surface layer on the surface of the prepared nanofiber nonwoven fabric by a laminating method; And The back layer forming step of laminating the back layer on the back surface of the nanofiber nonwoven fabric layer is included, including air permeability of 0.4 to 0.8 cc / ㎠ / sec, water resistance of 7,000 to 12,000 mmH ₂ O, moisture permeability of 7,000 to 10,000 g / ㎡ / 24hr, the moisture-permeable resistance of 2 to 7 m 2 Pa / w manufacturing method of the waterproof fabric. delete The method of claim 11, The nanofiber nonwoven film is a method of manufacturing a moisture-permeable waterproof fabric, characterized in that the air permeability is more than 0.8 cc / ㎠ / sec. The method of claim 11, The nanofiber nonwoven film is a method of producing a moisture-permeable waterproof fabric, characterized in that the water pressure is 10,000 mmH ₂ O or more. The method of claim 11, The nanofiber non-woven film is a method of manufacturing a waterproof moisture-permeable fabric, characterized in that the moisture permeability is 10,000 g / ㎡ / 24hr or more. The method of claim 11, The nanofiber nonwoven film is a method of manufacturing a waterproof waterproof fabric, characterized in that the pore size is 0.1 to 1.0 ㎛. The method of claim 11, The nanofiber nonwoven film is composed of weight 4 to 7 g / ㎡, thickness 10 to 30 ㎛, tensile strength of 0.2 kgf / inch or more, elongation 70% or more, peel strength 25 kgf / cm or more, porosity 80% or more Method of producing a waterproof breathable fabric. delete The method of claim 11, The laminating method is bonded at 70 to 150 ℃ using a water-curable adhesive of 3 to 30 g / ㎡ in the powder state, the temperature 30 ± 10 ℃, humidity 80 ± 10% to increase the moisture curing strength to improve adhesion Method for producing a moisture-permeable waterproof fabric, characterized in that made by aging. delete

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