KR102371294B1 - Manufacturing device for functional nanofiber membrane fabric and functional nanofiber membrane thereof - Google Patents

Abstract

A manufacturing device of functional nanomembrane fabric, according to one technical aspect of the present invention, comprises: at least one pair of transfer rolls for tensioning stretched polypropylene fabric wound around an oriented polypropylene (OPP) fabric roll; a first applicator applying a first liquid-type polyurethane resin to one side of the stretched polypropylene fabric, which is a substrate surface; a dryer volatilizing the stretched polypropylene fabric coated with the first liquid-type polyurethane resin at a first temperature of 30 to 60℃ to solidify the first liquid-type polyurethane resin to form a coating layer; a second applicator applying a second liquid-type polyurethane adhesive to an upper surface of the coating layer generated by the dryer; and a pressure roller pressing and bonding base fabrics onto the surface to which the second liquid-type polyurethane adhesive is applied.

Description

Functional nano-membrane fabric manufacturing apparatus and method for manufacturing functional nano-membrane fabric using the same {Manufacturing device for functional nanofiber membrane fabric and functional nanofiber membrane thereof}

The present invention relates to an apparatus for manufacturing a functional nano-membrane fabric and a method for manufacturing a functional nano-membrane fabric using the same.

Recently, with the development of textile technology, various functional textile fabrics have been developed. For example, there are functions such as waterproofness, water resistance, water repellency, water leakage, moisture permeability, water absorption, water retention, hygroscopicity, heat retention, and quick-drying properties.

This function of the textile fabric is achieved by using a composite fiber structure, for example a composite structure of different fibers or materials.

In recent years, the development of a functional fiber fabric capable of providing versatility by having a nano-membrane layer is being developed. The nano-membrane layer provides a nano-thick functional layer to the textile fabric, so that water particles do not pass through these pores, but gas particles pass through these pores. .

The thinner the nano-membrane layer, the better the effect of air permeability, and the smoother the surface, the more consistent the functions such as waterproofness and air permeability.

However, in the conventional case, there is a problem in that there is a limit in thickness and uniformity in the production of such a nano-membrane layer. In addition, there is a limitation that equipment for efficiently producing such nanomembrane fibers has not been developed.

Korean Patent No. 10-2179352

One technical aspect of the present invention is to solve the problems of the prior art, and in forming the nano-membrane coating layer, planarization and thinning of the nano-membrane coating layer by applying oriented polypropylene as a coating substrate To provide a functional nano-membrane fabric manufacturing apparatus and a method for manufacturing a functional nano-membrane fabric using the same.

In addition, one technical aspect of the present invention is to provide a functional nano-membrane fabric manufacturing apparatus capable of increasing breathability by setting the thickness of the nano-membrane coating layer to 3 to 7 μm, and a method for manufacturing a functional nano-membrane fabric using the same. .

The above objects and various advantages of the present invention will become more apparent from preferred embodiments of the present invention by those skilled in the art.

One technical aspect of the present invention proposes a functional nano-membrane fabric manufacturing apparatus. The functional nano-membrane fabric manufacturing apparatus includes at least a pair of transfer rolls for tensioning the stretched polypropylene fabric wound on the stretched polypropylene (OPP, Oriented Poly Prophylene) fabric roll, one surface of the stretched polypropylene fabric as a substrate surface, A first applicator for applying a first-component polyurethane resin, and volatilizing the stretched polypropylene fabric coated with the first-component polyurethane resin at a first temperature of 30 to 60 degrees to produce the first liquid polyurethane resin A dryer that solidifies to form a coating layer, a second applicator that applies a second component polyurethane adhesive to the upper surface of the coating layer generated by the dryer, and a second component polyurethane adhesive is applied to the surface, the base fabric is pressed It may include a pressure roller to adhere.

In one embodiment, the functional nano-membrane fabric manufacturing apparatus may further include a thin film separator for separating the stretched polypropylene fabric from the base fabric fiber body by the pressure roller.

In one embodiment, the thickness of the coating layer produced by the first component polyurethane resin may be 3 to 7 ㎛.

In an embodiment, the at least one pair of transfer rolls may tension the longitudinal cross-section of the stretched polypropylene fabric with a tensile strength of 5 to 10 MPa in the longitudinal direction and 8 to 16 MPa in the width direction.

이하이며, 용융 온도에서의 점도는 10,000cps 이하일 수 있다.In one embodiment, the second component polyurethane adhesive, (a) at least one selected from polyether polyol, polyester polyol, polyester ether copolymer polyol, polycarbonate polyol, and polycarbonate ester copolymer polyol having a molecular weight of 500 to 2,000 The molar ratio of NCO:OH to the polyol component and (b) a diisocyanate component selected from diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate and dicyclohexylmethane diisocyanate is 1:1.5 to 1: A compound obtained by reacting at a ratio of 3.0 and having a melting temperature of 70

or less, and the viscosity at the melting temperature may be 10,000 cps or less.

Another technical aspect of the present invention proposes a method for manufacturing a functional nano-membrane fabric using an apparatus for manufacturing a functional nano-membrane fabric. The manufacturing method of the functional nano-membrane fabric is, using at least a pair of transfer rolls, tensioning the stretched polypropylene fabric wound on the stretched polypropylene (OPP, Oriented Poly Prophylene) fabric roll, using a first applicator, Using one side of the stretched polypropylene fabric as a base surface, applying a first component polyurethane resin, using a dryer, apply the stretched polypropylene fabric to which the first component polyurethane resin is applied at a temperature of 30 to 60 degrees. By volatilizing at a first temperature to solidify the first liquid polyurethane resin to form a coating layer, using a second applicator, applying a second liquid polyurethane adhesive to the upper surface of the coating layer produced by the dryer Using a step and a pressure roller, it may include the step of pressure-adhering the base fabric to the surface to which the second liquid polyurethane adhesive is applied.

In one embodiment, the method for manufacturing the functional nano-membrane fabric may further include separating the stretched polypropylene fabric from the base fabric fiber body by the pressure roller using a thin film separator.

In one embodiment, the step of separating the stretched polypropylene fabric, the step of aging the fibrous body to which the base fabric is pressure-bonded, in an environment of 40 to 80% relative humidity for 46 to 50 hours and using a thin film separator Thus, it may include the step of separating the stretched polypropylene fabric from the aged fibrous body.

In one embodiment, the thickness of the first polyurethane coating layer may be 3 to 7 ㎛.

이하이며, 용융 온도에서의 점도는 10,000cps 이하 일 수 있다.In one embodiment, the second component polyurethane adhesive, (a) at least one selected from polyether polyol, polyester polyol, polyester ether copolymer polyol, polycarbonate polyol, and polycarbonate ester copolymer polyol having a molecular weight of 500 to 2,000 The molar ratio of NCO:OH to the polyol component and (b) a diisocyanate component selected from diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate and dicyclohexylmethane diisocyanate is 1:1.5 to 1: A compound obtained by reacting at a ratio of 3.0 and having a melting temperature of 70

or less, and the viscosity at the melting temperature may be 10,000 cps or less.

The means for solving the above-described problems do not enumerate all the features of the present invention. Various means for solving the problems of the present invention may be understood in more detail with reference to specific embodiments in the following detailed description.

According to one embodiment of the present invention, in forming the nano-membrane coating layer, oriented polypropylene is applied as a coating substrate to have the effect of enabling planarization and thinning of the nano-membrane coating layer, and secondary It has the effect of improving the smoothness, elasticity, and wearing comfort of functional textile fabrics.

In addition, one technical aspect of the present invention has the effect of increasing the air permeability by making the thickness of the nano-membrane coating layer 3 to 7 μm.

1 is a view for explaining an embodiment of a functional nano-membrane fabric manufacturing apparatus according to an embodiment of the present invention.
2 is a view for explaining another embodiment of the functional nano-membrane fabric manufacturing apparatus according to an embodiment of the present invention.
3 is a flowchart illustrating a method of manufacturing a functional nano-membrane fabric using an apparatus for manufacturing a functional nano-membrane fabric according to an embodiment of the present invention.
4 to 8 are views for explaining each step of the manufacturing method of the functional fiber fabric.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

However, the embodiment of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. In addition, the embodiments of the present invention are provided in order to more completely explain the present invention to those of ordinary skill in the art.

That is, the above-described objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, a person of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Also, as used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Although various flowcharts are disclosed to describe the embodiments of the present invention, this is for convenience of description of each step, and each step is not necessarily performed according to the order of the flowchart. That is, each step in the flowchart may be performed simultaneously with each other, performed in an order according to the flowchart, or may be performed in an order opposite to the order in the flowchart.

Hereinafter, an apparatus for manufacturing a functional nano-membrane fabric according to some embodiments of the present invention and a method for manufacturing a functional nano-membrane fabric using the same will be described.

1 is a view for explaining an embodiment of a functional nano-membrane fabric manufacturing apparatus according to an embodiment of the present invention, FIG. 3 is a functional nano-membrane fabric manufacturing apparatus using the functional nano-membrane fabric manufacturing apparatus according to an embodiment of the present invention It is a flowchart explaining the manufacturing method of the membrane fabric. 4 to 8 are views for explaining each step of the manufacturing method of the functional fiber fabric.

Hereinafter, the functional nano-membrane fabric manufacturing apparatus 100 will be described with reference to FIGS. 1 and 3 to 8 .

First, referring to FIG. 1 , the functional nano-membrane fabric manufacturing apparatus 100 includes at least a pair of transfer rolls (not shown), a first applicator 30 , a dryer 40 , a second applicator 50 and A pressure roller 70 may be included. According to an embodiment, the functional nano-membrane fabric manufacturing apparatus 100 may further include a thin film separator 80 .

Referring further to FIG. 3 , an Oriented Poly Prophylene (OPP) fabric roll 10 is provided (S110).

At least one pair of transfer rolls (not shown) may be fixed or transferred by tensioning the stretched polypropylene fabric wound around the stretched polypropylene fabric roll 10 . Figure 4 shows the stretched polypropylene fabric transferred by the transfer roll.

In one embodiment, in order to form the coating layer, the coating may be performed by tensioning the stretched polypropylene fabric 210 using at least a pair of transfer rolls. Specifically, the stretched polypropylene fabric roll may be fixed, and the longitudinal cross-section of the stretched polypropylene fabric may be tensioned by tensile strength of 8 to 16 MPa in the longitudinal direction and 5 to 10 MPa in the width direction. Here, the maximum tensile strength of the stretched polypropylene fabric may be 24 MPa. Thereafter, the coating layer can be formed by applying a first liquid polyurethane resin to the upper surface of the stretched polypropylene fabric maintaining the tension in this way, and volatilizing it. As in this embodiment, when the stretched polypropylene fabric 210 is stretched to form a coating layer, the uniformity and thickness of the coating layer can be more precisely controlled.

In one embodiment, the width of the stretched polypropylene fabric is 1400mm to 1600mm, and the tensile length of the stretched propylene fabric fixed or transported by at least one pair of transport rolls may be 15M to 20M. This corresponds to a length ratio suitable for tensile strength of 8 to 16 MPa in the longitudinal direction and 5 to 10 MPa in the width direction when the maximum tensile strength of the stretched polypropylene fabric is 24 MPa. That is, when the width-length ratio is about 1:10, the width-length tensile strength ratio may be set to a ratio of 5:8. This is because, when coating is made in a state where the length direction is set several times longer than the width direction, when tensile strength is given in proportion to the ratio of the distance, the opposite tension in the width direction may occur due to the tensile force in the length direction, so this is prevented. to do

The first applicator 30 may use one surface of the stretched polypropylene fabric as a base surface to apply the first liquid polyurethane resin (S120).

The first applicator 30 may be either a comma coater or a micro gravure coater. The first applicator 30 uses a comma coater or micro gravure roller to apply the first liquid polyurethane resin stored in the storage unit 31 thinly to one surface of the stretched polypropylene fabric. can

That is, in the present invention, a stretched polypropylene fabric is used as a base material, and a comma coater or a micro gravure roller is used to thinly apply the first liquid polyurethane resin to one surface of the thin stretched polypropylene fabric.

This is because, in the case of Release Paper (RP), which has been conventionally used as a substrate, the thickness is relatively thick and the paper surface is uneven. will be.

According to an embodiment, the polyurethane resin may be applied using a resin having a solid content of 30 to 80% together with a solvent.

For example, the first polyurethane resin may be applied in an amount of 20 to 40 g per square meter. This is the weight for maintaining the thickness of the coating layer at 3 to 7 μm.

In one embodiment, the first liquid polyurethane may be composed of 100 parts by weight of polyurethane, 100 parts by weight of solvent, 2 parts by weight of antistatic agent, 1 part by weight of peeling improver and 1 part by weight of coating stabilizer.

The dryer 40 may volatilize the stretched polypropylene fabric coated with the first liquid polyurethane resin at a first temperature of 30 to 60 degrees to solidify the first liquid polyurethane resin to form a coating layer (S130). 5 shows that the coating layer 220 made of the first liquid polyurethane resin is formed by the first applicator 30 .

Since this is a stretched polypropylene fabric having a thin thickness of the base material, high elasticity, and a low deformation temperature of about 90 degrees, in the present invention, the volatilization temperature is set at 30 to 60 degrees. The actual volatilization temperature may be selectively set to an appropriate value by those skilled in the art within the corresponding range according to factors such as room temperature and indoor humidity.

In one embodiment, the thickness of the coating layer produced by solidifying the first component polyurethane resin may be 3 to 7 ㎛.

The coating layer 220 is formed on the innermost layer of the functional fiber fabric, that is, the inner skin layer, and affects texture, smoothness, waterproofness and breathability. The thickness of the coating layer 220 is 3 to 7 μm. When the thickness of the coating layer 220 exceeds 10 μm, it is more disadvantageous in terms of breathability, and when the thickness of the coating layer 220 is less than 3 μm, the durability of the coating layer is low and efficiency may be lowered in the manufacturing process, so that of the coating layer 220 The thickness is preferably 3 to 7 µm.

In the conventional case, release paper (RP, Release paper) was used as the base material of the coating layer, but in the case of this release paper, since it has a base paper layer and a PE layer, the thickness is thick and the base paper layer is deformed due to humidity. This effect also affects the PE layer, so that the PE layer becomes non-uniform. Therefore, there is a problem that the surface of the coating layer is non-uniform, not smooth, and the thickness of the coating layer is not consistent.

On the other hand, in the present invention, it is characterized in that the stretched polypropylene fabric 210 is used as a substrate for forming the coating layer. Therefore, since the stretched polypropylene fabric 210 can guarantee flatness and uniformity unlike the release paper, the surface of the coating layer becomes smooth and the thickness of the coating layer becomes consistent, so that the functionality by the coating layer is also consistent and the effect is improved.

The second applicator 50 may apply a second liquid polyurethane adhesive to the upper surface of the coating layer generated by the dryer 40 (S140). 6 illustrates that the second component polyurethane adhesive 130 is applied to the upper surface of the coating layer 220 made of the first component polyurethane resin by the second applicator 50 .

The second applicator 50 may be any one of a flat roller, a gravure roller, or a micro gravure roller. The second applicator 50 may apply the second liquid polyurethane adhesive stored in the storage unit 51 to one surface of the stretched polypropylene fabric using a roller, that is, to the upper surface of the coating layer.

이하이며, 용융 온도에서의 점도는 10,000cps 이하일 수 있다. For example, the second component polyurethane adhesive 130 may include (a) at least one selected from polyether polyols, polyester polyols, polyester ether copolymer polyols, polycarbonate polyols and polycarbonate ester copolymer polyols having a molecular weight of 500 to 2,000. The molar ratio of NCO:OH to the polyol component and (b) a diisocyanate component selected from diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, toluene diisocyanate and dicyclohexylmethane diisocyanate is 1:1.5 to 1: A compound obtained by reacting at a ratio of 3.0 and having a melting temperature of 70

or less, and the viscosity at the melting temperature may be 10,000 cps or less.

The base fabric roll 60 is provided before the pressure roller 70, and the pressure roller 70 can pressure-attach the base fabric to the surface to which the second liquid polyurethane adhesive is applied (S150). 7 shows that the base fabric 240 is pressure-bonded to the upper surface of the second liquid polyurethane adhesive 130 . In this way, the fibrous body (fiber material) to which the base fabric is pressure-bonded is referred to as the base fabric fibrous body. The base fabric fibrous body includes a stretched propylene fabric 210, a coating layer 220 formed on the upper surface of the stretched propylene fabric, an adhesive layer 230 applied to one surface of the coating layer, and a base fabric 240 adhered to the adhesive layer It means the state of the fibrous body.

The thin film separator 80 may separate the stretched polypropylene fabric from the base fabric fiber body by the pressure roller 70 (S160).
8 shows the structure after the stretched polypropylene fabric 210 is separated from the base fabric fiber body.

On the other hand, in the example shown in FIG. 1 , after pressure bonding by the pressure roller 70 , the thin film separator 80 separates the thin film, but this is for illustration only, and according to the embodiment, it is After the pressurized base fabric fibrous body is aged for a predetermined time, the stretched polypropylene fabric may be thinned in the thin film separator 80 .

This is to ensure that the base fabric 140 and the first polyurethane coating layer 220 are sufficiently strongly adhered by the second liquid polyurethane adhesive 130 by aging for 46 to 50 hours, and thus a sufficient aging time If maintained, it is possible to further reduce the possibility of peeling of the first polyurethane coating layer 220 even when the stretched polypropylene fabric is separated.

The functional fiber in which the stretched polypropylene fabric is thinned may be wound on the functional fiber roll 90 .

Meanwhile, although omitted in the drawing of FIG. 1 , the functional nano-membrane fabric manufacturing apparatus may further include at least one tension control sensor. For example, the tension control sensor may be provided on the input side and the output side of a comma coater or gravibar roller used as an applicator to provide pressure so that the substrate, ie, stretched polypropylene, maintains smoothness during coating. This is to increase the uniformity of the formation of the coating layer or the adhesive layer by keeping the stretched polypropylene flat and smooth.

In the example described above with reference to FIG. 1 , it has been described that successive processes are implemented as one device, but this is for convenience of description, and at least some of the processes in FIG. 1 may be separately implemented.

2 shows an example in which some processes and components are individually separated, and the functional nano-membrane fabric manufacturing apparatus in FIG. 2 includes a first partial manufacturing apparatus 101 and a second partial manufacturing apparatus 102 . can do. Since the description of the detailed components constituting the first-part manufacturing apparatus 101 and the second-part manufacturing apparatus 102 can be easily understood from the above description, the description thereof will not be repeated here.

The first partial manufacturing apparatus 101 is a partial manufacturing apparatus performed up to the process of forming a coating layer on the stretched polypropylene fabric, and includes at least one transfer roll (not shown), a first applicator 130 and a dryer 140 . may include The stretched polypropylene fabric with the coating layer formed by the dryer 140 may be wound and stored on the intermediate process roll 150 .

The second part manufacturing device 102 is a partial manufacturing device that is performed up to a process of pressure-bonding and peeling the base fabric to the stretched polypropylene fabric 151 on which the coating layer is formed, at least one transfer roll 121, the second application It may include a machine 160 , a pressure roller 181 , and a thin film separator 182 .

In addition to the example illustrated in FIG. 2 , as described above, after the base fabric is pressure-bonded by the pressure roller 181 , a peeling process is performed after a predetermined aging time, and various partial modifications are possible. .

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, but is limited by the claims described below, and the configuration of the present invention may vary within the scope without departing from the technical spirit of the present invention. Those of ordinary skill in the art to which the present invention pertains can easily recognize that it can be changed and modified.

10, 110: Stretched polypropylene fabric roll
21, 22, 120, 121: transfer roll
30, 130: first applicator
40, 140: dryer
50, 161: second applicator
70, 181: pressure roller
80, 182: thin film separator
210, 211: Stretched polypropylene fabric
220: first component polyurethane resin
230: second component polyurethane adhesive
240, 251: base fabric

Claims (11)

A first applicator for applying a first liquid polyurethane resin by using the upper surface of the oriented polypropylene fabric (OPP, Oriented Poly Prophylene) as a base surface;
a dryer for forming a coating layer by volatilizing the stretched polypropylene fabric coated with the first liquid polyurethane resin at a first temperature of 30 to 60 degrees to solidify the first liquid polyurethane resin;
a second applicator for applying a second liquid polyurethane adhesive to one surface of the coating layer generated by the dryer; and
a pressure roller for pressure-adhering the base fabric to the surface to which the second liquid polyurethane adhesive is applied;
Functional nano-membrane fabric manufacturing apparatus comprising a.
According to claim 1, wherein the functional nano-membrane fabric manufacturing apparatus,
The base fabric fiber body by the pressure roller - The base fabric fiber body is the stretched polypropylene fabric, the coating layer formed on the upper surface of the stretched polypropylene fabric, the adhesive layer applied to one side of the coating layer, and the base fabric adhered to the adhesive layer Including-in, a thin film separator for separating the stretched polypropylene fabric;
Functional nano-membrane fabric manufacturing apparatus, characterized in that it further comprises.
According to claim 1,
The thickness of the coating layer produced by the first component polyurethane resin is 3 to 7 ㎛
Functional nano-membrane fabric manufacturing device, characterized in that.
According to claim 1, wherein the functional nano-membrane fabric manufacturing apparatus,
At least one pair of transfer rolls for tensioning the stretched polypropylene fabric wound on the oriented polypropylene (OPP, Oriented Poly Prophylene) fabric roll;
further comprising,
The at least one pair of conveying rolls,
Tensing the longitudinal section of the stretched polypropylene fabric to a tensile strength of 5 to 10 MPa in the longitudinal direction and 8 to 16 MPa in the width direction
Functional nano-membrane fabric manufacturing device, characterized in that.
According to claim 1, wherein the second component polyurethane adhesive,
(a) at least one polyol component selected from among polyether polyols, polyester polyols, polyester ether copolymer polyols, polycarbonate polyols and polycarbonate ester copolymer polyols having a molecular weight of 500 to 2,000, and (b) diphenylmethane diisocyanate, isophorone A compound obtained by reacting a diisocyanate component selected from diisocyanate, hexamethylene diisocyanate, toluene diisocyanate and dicyclohexylmethane diisocyanate with a molar ratio of NCO:OH in a ratio of 1:1.5 to 1:3.0, and having a melting temperature of 70

or less, and the viscosity at melt temperature is 10,000 cps or less
Functional nano-membrane fabric manufacturing device, characterized in that.
Using a first applicator, using the upper surface of the oriented polypropylene (OPP, Oriented Poly Prophylene) fabric as a base surface, applying a first liquid polyurethane resin;
Using a dryer, volatilizing the stretched polypropylene fabric coated with the first liquid polyurethane resin at a first temperature of 30 to 60 degrees to solidify the first liquid polyurethane resin to form a coating layer;
using a second applicator, applying a second liquid polyurethane adhesive to the upper surface of the coating layer produced by the dryer; and
Using a pressure roller, the step of pressure-adhering the base fabric to the surface to which the second liquid polyurethane adhesive is applied;
A method of manufacturing a functional nano-membrane fabric using a functional nano-membrane fabric manufacturing apparatus, comprising:
According to claim 6, The manufacturing method of the functional nano-membrane fabric,
Using a thin film separator, the base fabric fiber body by the pressure roller-the base fabric fiber body is the stretched polypropylene fabric, the coating layer formed on the upper surface of the stretched polypropylene fabric, the adhesive layer applied to one side of the coating layer, and the adhesive layer Including a base fabric adhered to - in, separating the stretched polypropylene fabric;
Method for manufacturing a functional nano-membrane fabric using a functional nano-membrane fabric manufacturing apparatus, characterized in that it further comprises.
According to claim 7, wherein the step of separating the stretched polypropylene fabric,
Aging the base fabric fiber body for 46 to 50 hours in an environment of 40 to 80% relative humidity; and
separating the stretched polypropylene fabric from the aged fibrous body using a thin film separator;
A method of manufacturing a functional nano-membrane fabric using a functional nano-membrane fabric manufacturing apparatus, comprising:
7. The method of claim 6,
The thickness of the coating layer formed by solidifying the first liquid polyurethane resin is 3 to 7 ㎛
A method of manufacturing a functional nano-membrane fabric using a functional nano-membrane fabric manufacturing apparatus, characterized in that
The method of claim 9, wherein the second component polyurethane adhesive,
(a) at least one polyol component selected from among polyether polyols, polyester polyols, polyester ether copolymer polyols, polycarbonate polyols and polycarbonate ester copolymer polyols having a molecular weight of 500 to 2,000, and (b) diphenylmethane diisocyanate, isophorone A compound obtained by reacting a diisocyanate component selected from diisocyanate, hexamethylene diisocyanate, toluene diisocyanate and dicyclohexylmethane diisocyanate with a molar ratio of NCO:OH in a ratio of 1:1.5 to 1:3.0, and having a melting temperature of 70

or less, and the viscosity at melt temperature is 10,000 cps or less
A method of manufacturing a functional nano-membrane fabric using a functional nano-membrane fabric manufacturing apparatus, characterized in that
A functional nano-membrane fabric using stretched polypropylene, manufactured by the manufacturing method of any one of claims 6 to 10.

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