KR20120132744A - Manufacturing method of moisture-permeable and waterproof fabric having ultra thin coating layer and moisture-permeable and waterproof fabric manufactured thereby - Google Patents

Abstract

PURPOSE: Manufacturing method of water-proof fabric with hydrophilic non-porous alternating polyurethane covering layer of ultrathin film on at least one side of fabric air bubble and water-proof fabric manufactured thereby are provided to be useful on sportswear by enhancing the comfortness when worn and the water-proof fabric releases sweat from the body on the covering layer no matter how big the size of water molecule. CONSTITUTION: A water-proof fabric manufacturing method comprises steps of: preparing fabric air bubble by processing water repellency and on the laminated side; forming hydrophilic non-porous alternating polyurethane covering layer on one side of plating treated polyester film, and forming adhesive layer by placing pattern gravure roll on the covering layer and printing urethane adhesive; adding the laminated side of the fabric air bubble of the first process and adhesive layer of the second process, and drying at the heat drier; and exfoliating the polyester film. The Hydrophilic non-porous alternating polyurethane covering layer is formed by at least one time of hydrophilic non-porous alternating polyurethane resin is applied by blowing method. The hydrophilic non-porous alternating polyurethane covering layer is formed by at least one time of hydrophilic non-porous alternating polyurethane resin is applied by gravure roll. The hydrophilic non-porous alternating polyurethane resin has 10~300cps viscosity. Urethane adhesive is printed to 20~40% ratio based on the area of adhesive layer corresponded to pattern gravure roll. The material of the fabric air bubble is polyamide type of synthetic fabric selected from nylon 6 or nylon 6.

Description

MANUFACTURING METHOD OF MOISTURE-PERMEABLE AND WATERPROOF FABRIC HAVING ULTRA THIN COATING LAYER AND MOISTURE-PERMEABLE AND WATERPROOF FABRIC MANUFACTURED THEREBY}

The present invention relates to a method for manufacturing a moisture-permeable waterproof foam having an ultra-thin film layer, and a moisture-permeable waterproof foam manufactured therefrom, and more particularly, at least one surface of a fabric bubble is laminated with a hydrophilic non-porous modified polyurethane coating layer to release sweat from the human body. It is designed to be absorbed in the coating layer and then diffused to the outside, and the hydrophilic non-porous modified polyurethane coating layer is formed into an ultra-thin film by laminating or casting using a gravure roll, so that moisture permeability and water pressure are increased. The present invention relates to a method for producing an optimized moisture vapor barrier and a moisture vapor barrier prepared therefrom.

In general, the moisture-permeable tarpaulin is a sport having excellent moisture permeability and waterproofness by forming a coating layer on the fabric bubble so that 100 μm of raindrops do not pass into the fiber from the outside of the fiber and 0.004 μm of moisture released from the body can flow out of the fiber in the fiber. It refers to fabrics used in wear, military uniforms, tents and the like.

Representatively, the conventional microporous water-permeable waterproof foam is formed by forming a microporous film layer on one surface of a bubble, and exerts water vapor in the form of water vapor in the sweat emitted from the human body through the microporous film layer to exhibit moisture permeability. On the other hand, rainwater is to block the passage of the micropores of the microporous film layer to be waterproof.

However, the sweat emitted from the human body may be minute water molecules such as water vapor depending on the amount of exercise, but in some cases, when the water molecules are large like rain water, the sweat cannot be released to the outside through the micropores. Therefore, the conventional microporous moisture-proof waterproof cloth has a limit in maintaining or improving comfort. Moreover, the conventional microporous moisture-proof waterproof cloth causes a problem that the micropores are clogged by detergent residues or dirt during washing, thereby significantly reducing the function.

At this time, the coating layer serves to absorb the sweat emitted from the inside of the body first and then release it to the outside. If the thickness of the coating layer is thick, it will not only take a long time to release the absorbed sweat but also lower the emission efficiency.

Accordingly, the present inventors have endeavored to solve such a problem, and as a result, at least one surface of the fabric bubble, a moisture-permeable waterproof bubble laminated with a hydrophilic non-porous modified polyurethane film layer of ultra-thin film at the same time meets the high moisture permeability and water resistance pressure to the size of the water molecules Irrespective of the fact that once the sweat generated from the body was absorbed in the coating layer, it was quickly released to the outside to maintain comfort, thereby completing the present invention.

It is an object of the present invention to provide a method for producing a moisture-permeable waterproof fabric in which a hydrophilic non-porous modified polyurethane film layer is ultra-thin film laminated on at least one surface of a fabric bubble.

It is another object of the present invention to provide a moisture-permeable waterproof foam in which a hydrophilic non-porous modified polyurethane film layer is laminated on at least one surface of a fabric bubble, thereby optimizing moisture permeability and water pressure.

In order to achieve the object of the present invention, the present invention 1) to prepare a fabric bubble by water-repellent treatment and calendered coating surface,

2) to form a hydrophilic non-porous modified polyurethane film layer on the back surface of the release-treated polyester film, a pattern gravure roll is put on the film layer to print a urethane adhesive to form an adhesive layer,

3) laminating the adhesive layer of step 2) and the coated surface of the fabric bubble of step 1), dried and aged in a hot air dryer,

4) It provides a method for producing a moisture-permeable waterproof foam consisting of peeling the polyester film in the above.

In the production method of the present invention, the hydrophilic non-modified polyurethane coating layer is formed by applying the hydrophilic non-modified polyurethane resin composition at least once by a blowing method, or the hydrophilic non-modified polyurethane resin composition is used as a gravure roll. By casting at least one or more times.

At this time, the hydrophilic non-porous modified polyurethane resin composition is preferably a viscosity of 10 to 300cps, while the viscosity of the urethane adhesive of step 2) is preferably satisfying 500 to 3000cps. In the above urethane adhesive is to be partially printed by the pattern gravure roll 20 to 40% of the area of the front adhesive layer, the pattern is a dot or mesh pattern is used.

Preferred woven fabrics used in the present invention is a polyamide-based synthetic fiber selected from nylon 6 or nylon 66, wherein the fineness of the fiber is 7 to 15 denier.

The present invention provides a moisture-permeable waterproof fabric prepared from the method for producing a moisture-repellent waterproof fabric.

Preferably, from the manufacturing method, a moisture-permeable waterproof cloth is provided in which a hydrophilic non-porous modified polyurethane film layer is laminated by an adhesive layer on at least one surface of a fabric bubble. At this time, the moisture permeability of the moisture-proof waterproof cloth satisfies 20,000g / ㎡ 24 hours or more (applied potassium acetate method) and the water pressure 5,000mmH ₂ O or more.

In the moisture-permeable waterproof fabric, the hydrophilic non-porous modified polyurethane film layer is formed by a blowing method, the thickness thereof is formed to 10㎛ or less, more preferably formed to a thickness of 7㎛ or less.

In addition, the present invention is prepared from the manufacturing method of the moisture-proof waterproof fabric, and provides a moisture-resistant waterproof foam in which a hydrophilic non-porous modified polyurethane film layer is laminated by an adhesive layer on at least one surface of the fabric bubble. At this time, the moisture permeability of the moisture-permeable waterproof foam satisfies 7,000 g / m 2 or more (applied calcium chloride method) and water pressure of 450 mmH ₂ O or more.

In the moisture-permeable waterproof fabric, the hydrophilic non-porous modified polyurethane film layer is formed by a casting method using a gravure roll, and is formed in the form of an ultra-thin film of 5 μm or less, more preferably 3 μm or less.

The fabric bubble used in the moisture-permeable waterproof cloth of the present invention is a polyamide-based synthetic fiber selected from nylon 6 or nylon 66 having a fineness of 7 to 15 deniers.

In the moisture-permeable waterproof fabric of the present invention, the adhesive layer is printed with a polyurethane adhesive having a coating area of 20 to 40% relative to the front adhesive layer area by a pattern gravure roll.

The present invention provides a moisture-permeable waterproof cloth in which a hydrophilic non-porous modified polyurethane film layer is laminated on at least one surface of a fabric bubble, wherein the hydrophilic non-porous modified polyurethane film layer is formed into an ultrathin film by a casting method using a blowing method or a gravure roll. You can.

Accordingly, the moisture-permeable waterproof cloth provided from the manufacturing method of the present invention is optimized by satisfying high moisture permeability and water pressure at the same time due to the hydrophilic non-porous modified polyurethane film layer of the ultra-thin film.

Therefore, the moisture-permeable waterproof cloth provided with the hydrophilic non-porous modified polyurethane film layer of the ultra-thin film of the present invention greatly absorbs the sweat generated from the body in the film layer and releases it to the outside regardless of the size of the water molecules. Since it can improve and also is non-porous, unlike the conventional microporous type, the fall of moisture permeability by washing etc. can be prevented. In addition, due to the use of a hydrophilic resin, it is very comfortable when worn because condensation does not occur due to a difference between body temperature and external temperature as in the prior art.

Accordingly, the moisture-permeable waterproof fabric of the present invention, in which an ultra-thin hydrophilic non-porous modified polyurethane film layer is laminated on at least one surface of a fabric bubble, is suitable as a sports wear.

Hereinafter, the present invention will be described in detail.

The present invention is to prepare a fabric bubble by 1) water repellent and calendered coated surface,

2) to form a hydrophilic non-porous modified polyurethane film layer on the back surface of the release-treated polyester film, a pattern gravure roll is put on the film layer to print a urethane adhesive to form an adhesive layer,

3) laminating the adhesive layer of step 2) and the coated surface of the fabric bubble of step 1), dried and aged in a hot air dryer,

4) It provides a method for producing a moisture-permeable waterproof foam consisting of peeling the polyester film in the above.

Hereinafter, it will be described in detail step by step of the manufacturing method of the moisture-permeable waterproof foam of the present invention.

The fabric bubble in step 1) of the present invention uses a polyamide-based synthetic fibers selected from nylon 6 or nylon 66, the fineness of the synthetic fibers is preferably 7 to 15 denier. More specifically, the present invention uses nylon 6 as the cloth bubble, but 7 denier, 10 denier and 15 denier are applied. At this time, if the fineness exceeds 15 denier, it is difficult to implement a uniform fabric bubble surface and is not preferable for forming a moisture-permeable waterproof bubble of a thin film shape.

Step 1) is a step of preparing a fabric bubble by water-repellent treatment of such fabric bubbles using a known fluorine-based water repellent, and calendered to smooth the surface to be coated. At this time, after the fluorine-based water repellent treatment, after the heat setting in the hot air dryer may be prepared for the next step. Calendar treatment to impart smoothness can also be carried out by known methods.

Step 2) is a step of forming a hydrophilic non-porous modified polyurethane film layer on the back surface of the release-treated polyester film, and by printing a urethane adhesive on a pattern gravure roll on the film layer to form an adhesive layer.

In the moisture-permeable waterproof foam of the present invention, the hydrophilic non-porous modified polyurethane film layer serves to absorb the sweat emitted from the inside of the body first and then release it to the outside, wherein the hydrophilic non-porous modified polyurethane film layer is thick In addition, it will not only take longer to release the absorbed sweat, but also reduce the release efficiency.

Accordingly, the present invention can provide a moisture-permeable waterproof cloth having optimized moisture permeability and water pressure by laminating a hydrophilic non-porous modified polyurethane film layer in a thin thickness.

Accordingly, the hydrophilic non-modified polyurethane coating layer of the present invention is formed by applying at least one hydrophilic non-modified polyurethane resin composition by a blowing method, or at least one or more times of the hydrophilic non-modified polyurethane resin composition using a gravure roll. It is characterized by forming by casting.

Blowing method is a method of blowing the air in the process of spinning the polymer masterbatch into the extruder to inflate the radiator and then cooled in the air to form a coating layer. Therefore, the film manufacturing method by the blowing method is very different from the method of casting on a PET film. When blowing a film having a thickness of 10 μm, pinholes are generated by moisture in the air, and the film is formed as a thin film. Since it is not good to form a double film, such as polyethylene (PE) that is not compatible with polyurethane (PU) to prevent pinholes and to form a good film, the PE layer is a release film, such as PET film It can be removed after laminating with the fabric.

At this time, the hydrophilic non-porous modified polyurethane film layer formed by applying at least one or more times by the blowing method is formed to a thickness of 10 μm or less, more preferably 7 μm or less.

Another method of forming the hydrophilic non-modified polyurethane coating layer of the present invention is to form a hydrophilic non-modified polyurethane resin composition solution by casting at least one or more times with a gravure roll, and the formed hydrophilic non-modified polyurethane coating layer is 5 μm. It is formed in the form of a thin film of below thickness, More preferably, 3 micrometers or less.

At this time, as the number of application of the hydrophilic non-modified polyurethane resin composition is increased when the hydrophilic non-modified polyurethane coating layer is formed, the thickness of the coating layer will also increase, so that desired thickness control is possible.

Therefore, in order to obtain a thin film-like coating layer, the number of coatings of the hydrophilic non-porous modified polyurethane resin composition liquid and the viscosity of the composition liquid can be controlled. Therefore, Preferably, the viscosity of the hydrophilic non-porous modified polyurethane resin composition of the present invention is prepared to satisfy 10 to 300 cps (cent poise). At this time, if the viscosity of the hydrophilic non-modified polyurethane resin composition is less than 10cps, the film formation itself is difficult, while if the viscosity exceeds 300cps, the coating thickness and smoothness is reduced due to the increase in viscosity resulting in a thick film thickness There is this.

The hydrophilic polyurethane resin contained in the hydrophilic non-porous modified polyurethane resin composition of the present invention exhibits absorbency by the hydrophilic radicals formed at the terminal and can simultaneously migrate the absorbed moisture. More specifically, the hydrophilic polyurethane resin used in the present invention is a cation type or anion type polyurethane polymer. Cationic polyurethane polymers are those obtained by condensation polymerization of a monomer having a cationic hydrophilic group, and those having an NCO (-N = C = O) prepolymer and a tertiary nitrogen amino compound at the terminal.

The anionic polyurethane polymer is a polycondensation polymer having an NCO prepolymer and an amino sulfonate at its end or a polycondensation polymer having an NCO prepolymer and a polyhydroxy carboxylic acid.

The present invention can be prevented due to the use of the hydrophilic polyurethane resin as described above due to the difference in body temperature and external temperature condensation. In addition, since the hydrophilic non-porous modified polyurethane resin composition liquid used in the present invention is non-porous, unlike the conventional microporous type, it is possible to prevent a decrease in moisture permeability due to washing or the like.

Step 2) of the present invention to form an adhesive layer on the hydrophilic non-porous modified polyurethane film layer, it can be formed by printing a polyurethane adhesive with a pattern gravure roll.

At this time, the viscosity of the urethane adhesive is preferably to satisfy 500 to 3000cps, to maintain a high viscosity compared to the hydrophilic non-porous modified polyurethane resin composition, and is set in the above range to prevent the urethane adhesive from deviating from the pattern gravure roll. . If the viscosity of the urethane adhesive is less than 500 cps, there is a problem that the functionality of the coating layer is lowered due to the spreadability of the adhesive layer, the moisture permeability is lowered. If the viscosity exceeds 3000 cps, the adhesive is not uniformly printed, the adhesiveness of the film and the fabric Can be bad.

Moreover, a urethane adhesive agent is apply | coated to a pattern gravure roll using a dot or mesh shape as a preferable pattern.

By this method, the area of application of the urethane adhesive relative to the area of the front adhesive layer is to be partially printed within 20 to 40%, more preferably within 30%. At this time, if the coating area of the urethane adhesive is less than 20%, the adhesive strength is weak, which is not preferable. If the coating area exceeds 40%, the functionality of the coating layer is lowered and the moisture permeability is lowered.

Thus, the adhesive layer partially printed on the hydrophilic non-modified polyurethane coating layer is made of a urethane adhesive of the same component as the coating layer, thereby providing excellent adhesion, while the surface not printed on the hydrophilic non-modifying polyurethane coating layer is The coating layer intrinsic properties will be preserved to achieve moisture permeability.

In the production method of the present invention, step 3) is to laminate the adhesive layer surface of step 2) and the coating surface of the fabric bubble of step 1), and to dry and mature in a hot air dryer. Preferably, after lamination, it is prepared by drying at room temperature with a hot air dryer and aging for a predetermined time.

Thereafter, step 4) after the lamination, by peeling the polyester film, to prepare a moisture-permeable waterproof foam laminated hydrophilic non-porous modified polyurethane film layer by an adhesive layer on one surface of the fabric bubble of the present invention.

That is, in the manufacturing method of the present invention, by forming a hydrophilic non-porous modified polyurethane film layer of ultra-thin film formed on one surface of the fabric bubble in a separate polyester film, and then integrating it by lamination method, ultra-thin film of the final moisture-permeable waterproof foam Implement

The present invention provides a moisture-permeable waterproof fabric prepared by the method for producing a moisture-repellent waterproof fabric.

In a first preferred embodiment, a moisture-permeable waterproof fabric is provided in which a hydrophilic non-porous modified polyurethane film layer formed by an adhesive layer and a blowing method is laminated on at least one surface of a fabric bubble.

At this time, the moisture permeability of the moisture-proof waterproof cloth satisfies 20,000g / ㎡ 24 hours or more (applied potassium acetate method) and the water pressure 5,000mmH ₂ O or more.

More preferably, the moisture permeability of the moisture-permeable waterproof foam satisfies 20,000 to 30,000g / ㎡ 24 hours, and simultaneously meets the water pressure 5,000 to 10,000mmH ₂ O.

In particular, the moisture-permeable waterproof cloth is a hydrophilic non-porous modified polyurethane film layer formed by a blowing method, the thickness is 10㎛ or less, more preferably 7㎛ or less.

According to a second preferred embodiment of the moisture-permeable waterproof fabric of the present invention, there is provided a moisture-permeable waterproof fabric having a hydrophilic non-porous modified polyurethane film layer formed by casting using an adhesive layer and a gravure roll on at least one surface of a fabric bubble. At this time, the moisture permeability of the moisture-permeable waterproof foam satisfies 7,000 g / m 2 or more (applied calcium chloride method) and water pressure of 450 mmH ₂ O or more.

More preferably, the moisture permeability of the moisture-permeable waterproof foam satisfies 7,000 to 12,000 g / m 2 24 hours (calcium chloride method applied) and the water pressure 450 to 1,000 mmH ₂ O.

In the moisture-permeable waterproof fabric, the hydrophilic non-porous modified polyurethane film layer is formed by a casting method using a gravure roll, and has a thickness of 5 μm or less, more preferably 3 μm or less.

The moisture-permeable waterproof foam of the present invention is made of a polyamide-based synthetic fiber selected from nylon 6 or nylon 66 having a fineness of 7 to 15 denier, and the ultra-hydrophilic non-porous modified polyurethane film layer is laminated according to the manufacturing method of the film layer. The thickness can be controlled to 10 micrometers or less or 5 micrometers or less.

Therefore, the moisture-permeable waterproof cloth provided with the hydrophilic non-porous modified polyurethane film layer of the ultra-thin film of the present invention greatly absorbs the sweat generated from the body in the film layer and releases it to the outside regardless of the size of the water molecules. Since it can improve and also is non-porous, unlike the conventional microporous type, the fall of moisture permeability by washing etc. can be prevented. In addition, due to the use of a hydrophilic resin, it is very comfortable when worn because condensation does not occur due to a difference between body temperature and external temperature as in the prior art.

In addition, the moisture-permeable waterproof fabric of the present invention is a urethane adhesive is partially printed in laminating the fabric bubble and the hydrophilic non-porous modified polyurethane film layer, the adhesive strength between the fabric bubble and the film layer to achieve a minimum adhesive use of 500 to 1,000g / cm do.

Therefore, the moisture-permeable waterproof cloth of the present invention is useful for sportswear applications.

Hereinafter, the present invention will be described in more detail with reference to Examples.

This embodiment is intended to illustrate the present invention in more detail, and the scope of the present invention is not limited to these examples.

<Example 1> moisture-proof waterproof fabric 1

A nylon 6 fabric having a density of 230 T was water-repelled with an aqueous solution containing 2% by weight of a fluorine-based water repellent, and calendered to smooth the one side to be coated.

Absorbent modified polyurethane resin composition liquid (viscosity 100cps) in which 70 weight% of hydrophilic non-porous polyurethane resins (7212, BIX Co., Ltd.) melt | dissolved in 30 weight% of methyl ethyl ketones which are organic solvents on the release-treated polyester film single side | surface. Using 110 gravure roll, cast thickness to 5㎛ level, pre-dry for 80 seconds at a temperature of 70 ℃ in a hot air dryer and dried for 2 minutes at a temperature of 120 ℃ hydrophilic non-porous modified poly The urethane film layer was formed.

On the hydrophilic non-porous modified polyurethane film layer, a urethane adhesive composition (viscosity 1,000 cps) was printed with a 70 mesh gravure roll to form an adhesive layer and semi-dryed at 100 ° C.

Thereafter, the nylon 6 fabric prepared by the calender treatment and the adhesive layer were laminated, and then aged in a aging room at 60 ° C. for 24 hours. Thereafter, the polyester film was peeled off to complete the moisture-permeable waterproof fabric. At this time, the adhesive composition was prepared by dissolving 65% by weight of the urethane-based adhesive (D-ACE 2702, Dong Chemical), 10% by weight of the curing agent, 2% by weight of the curing accelerator in 23% by weight of the organic solvent methyl ethyl ketone.

The moisture-permeable waterproof fabric prepared above was measured according to the measurement standards of the moisture permeability JIS Z 0208 method and the JIS L 1092 method. As a result, the moisture permeability was measured at 8,000 g / m 2, 24 hours (calcium chloride method applied) and 450 mm H ₂ O.

<Example 2> moisture-permeable waterproof fabric 2

Instead of the adhesive composition of Example 1, except for using an adhesive composition consisting of 90% by weight of urethane resin adhesive [T-330 Co., Ltd.] and 10% by weight of isopropyl alcohol, and In the same manner, a water vapor barrier was prepared.

<Example 3> moisture-permeable waterproof fabric manufacturing 3

A nylon 6 fabric having a density of 230 T was water-repelled with an aqueous solution containing 2% by weight of a fluorine-based water repellent, and calendered to smooth the one side to be coated.

On one side of the release film treated polyester film, a hydrophilic non-porous modified polyurethane film layer having a thickness of 10 μm was formed by blowing a chip made of a hydrophilic non-porous polyurethane resin while blowing air.

Then, on the hydrophilic non-porous modified polyurethane film layer, the adhesive composition consisting of 90% by weight of urethane resin adhesive [T-330 Co., Ltd.] and 10% by weight of isopropyl alcohol was printed with a 70 mesh gravure roll to form an adhesive layer. It was formed and semi-dryed at 100 ° C.

Thereafter, the nylon 6 fabric prepared by the calender treatment and the adhesive layer were laminated, and then aged in a aging room at 60 ° C. for 24 hours. Thereafter, the polyester film was peeled off to prepare a water vapor barrier.

The moisture-permeable waterproof fabric prepared above was measured according to the measurement standards of the moisture permeability JIS Z 0208 method and the JIS L 1092 method. As a result, the moisture permeability was measured at 25,000 g / m 2, for 24 hours (with potassium acetate method), and at a water resistance of 5,000 mmH ₂ O. .

As described above,

The present invention provides a method for producing a moisture-permeable waterproof cloth for laminating a hydrophilic non-porous modified polyurethane film layer formed on at least one surface of a fabric bubble by a casting method using a blowing method or a gravure roll.

At this time, the hydrophilic non-porous modified polyurethane film layer is formed by an ultra-thin film having a thickness of 10 μm or less or 5 μm or less, thereby satisfying high moisture permeability and water pressure at the same time to optimize the moisture permeability waterproof function. In other words. Regardless of the size of the water molecule, the film can absorb the sweat generated from the body once and then release it to the outside, thereby greatly improving comfort.

Furthermore, the moisture-permeable waterproof foam of the present invention is suitable as a sports wear because it is very comfortable at the time of wearing because it does not occur due to the difference between the body temperature and the external temperature due to the use of the hydrophilic resin.

While the invention has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (18)

1) Prepare fabric bubble by water-repellent treatment and calendered coating surface,
2) to form a hydrophilic non-porous modified polyurethane film layer on one surface of the release-treated polyester film, and to put a pattern gravure roll on the film layer to print a urethane adhesive to form an adhesive layer,
3) laminating the adhesive layer of step 2) and the coated surface of the fabric bubble of step 1), dried and aged in a hot air dryer,
4) A method of producing a moisture-permeable waterproof fabric consisting of peeling the polyester film above. The method of claim 1, wherein the hydrophilic non-porous modified polyurethane film layer is formed by applying a hydrophilic non-porous modified polyurethane resin composition solution at least one or more times by a blowing method. The method of claim 1, wherein the hydrophilic non-porous modified polyurethane film layer is formed by casting the hydrophilic non-porous modified polyurethane resin composition using at least one or more times using a gravure roll. The method of claim 2 or 3, wherein the hydrophilic non-porous modified polyurethane resin composition has a viscosity of 10 to 300 cps. The method of claim 1, wherein the urethane adhesive has a viscosity of 500 to 3000 cps. The method of claim 1, wherein the urethane adhesive is partially printed by the pattern gravure roll 20 to 40% of the area of the front adhesive layer. The method of claim 6, wherein the pattern is a dot or a mesh. The method of claim 1, wherein the material of the fabric bubble is a polyamide-based synthetic fiber selected from nylon 6 or nylon 66. The method of claim 8, wherein the polyamide synthetic fiber has a fineness of 7 to 15 deniers. Prepared from the method of claim 1,
A water-permeable waterproof foam which is laminated on at least one surface of a fabric bubble by a hydrophilic non-porous modified polyurethane film layer formed by an adhesive layer and a blowing method:
Water vapor permeability: 20,000g / ㎡, 24 hours or more (applied potassium acetate method)
Water pressure: 5,000 mmH ₂ O or more The water-permeable waterproof fabric according to claim 10, wherein the hydrophilic non-porous modified polyurethane film layer is formed to a thickness of 10 µm or less. The moisture-permeable waterproof fabric according to claim 10, wherein the hydrophilic non-porous modified polyurethane film layer is formed to a thickness of 7 µm or less. Prepared from the method of claim 1,
On at least one side of the fabric bubble, a hydrophilic non-porous modified polyurethane film layer formed by casting method using an adhesive layer and gravure roll is laminated to meet the following physical properties:
Water vapor permeability: 7,000g / ㎡, 24 hours or more (calcium chloride method applied)
Water pressure: 450 mmH ₂ O or more The water-permeable waterproof fabric according to claim 13, wherein the hydrophilic non-porous modified polyurethane film layer has a thickness of 5 µm or less. The water-permeable waterproof fabric according to claim 13, wherein the hydrophilic non-porous modified polyurethane film layer has a thickness of 3 µm or less. The water-permeable waterproof fabric according to claim 10 or 13, wherein the fabric bubble is a polyamide-based synthetic fiber selected from nylon 6 or nylon 66. The water vapor barrier of claim 16, wherein the polyamide-based synthetic fibers have a fineness of 7 to 15 deniers. The water-permeable waterproof fabric according to claim 10 or 13, wherein the adhesive layer is partially printed with a urethane adhesive at 20 to 40% of the area of the front adhesive layer by a pattern gravure roll.