KR20150020991A - Breathable and Waterproof Fabric and Manufacturing Method thereof - Google Patents

Abstract

The present invention relates to a moisture transmission and water-proof fabric and a manufacturing method thereof, the moisture transmission and water-proof fabric comprising a fabric substrate; a solid type hot melt adhesive pattern formed on the fabric substrate; and nanofabric webs which adhere to the solid type hot melt adhesive pattern and is accumulated by nanofibers having polymer materials, thereby having a microporous structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breathable waterproof fabric,

The present invention relates to a moisture-permeable and waterproof fabric, and more particularly, to a moisture-permeable and waterproof fabric comprising a fabric substrate and a nanofiber web adhered thereto by using a solid-phase hot-melt adhesive and a method of manufacturing the same.

In recent years, interest in health and leisure activities has increased, and functional materials have been applied to various fields. Particularly, materials with breathable and waterproof function are being emphasized more and more in the luxury and wellness boom.

Breathable waterproof fabric is a functional fabric with excellent moisture permeability and water repellency that emits sweat and prevents rain. It is applied for climbing and outdoor activities such as climbing clothes, outdoor clothes and sleeping bags, and its application range is widening.

The breathable waterproof fabric is designed to provide comfort by allowing the water to penetrate, while the sweat coming from the body is vaporized and discharged to the outside, and the breathable waterproof fabric is excellent in wearing comfort.

Waterproof materials are classified into three materials such as PTFE film, polyester film, and PU lamination. Gore-Tex is currently leading the world's breathing and waterproof market with PTFE film. However, new materials that can replace existing breathable waterproof materials .

Korean Patent Registration No. 10-1106679 discloses a polyurethane nanofiber web composed of polyurethane nanofibers having an average diameter of 1,000 nm or less and part of the polyurethane nanofiber is a moisture-curing polyurethane nanofiber, A waterproof fabric is manufactured by thermocompression bonding the fabric with a sprayed fabric. However, such a fabric can facilitate the process of bonding the polyurethane nanofiber web to the fabric by lowering the shrinkage ratio of the polyurethane nanofiber web at room temperature. However, by spraying the liquid adhesive, the uneven application distribution of the liquid adhesive at the fabric is obtained, And the liquid adhesive is impregnated into the fabric, thereby obstructing the moisture permeation.

Accordingly, the present inventors have continuously studied the moisture-permeable and waterproof fabric capable of improving the moisture permeability, thereby improving the adhesion between the fabric substrate and the nano-fiber web using the solid-state hot-melt adhesive pattern, Waterproof fabric can be improved, the fabric can be made lighter, and more economical, usable and competitive, the present invention can be achieved.

Korean Patent Registration No. 10-1106679

SUMMARY OF THE INVENTION The present invention has been made in view of the problems of the prior art, and an object of the present invention is to provide a moisture-permeable and waterproof fabric capable of improving adhesion between a fabric substrate and a nanofiber web by using a solid-

Another object of the present invention is to provide a breathable waterproof fabric capable of reducing the weight of a fabric by adhering a lightweight nanofiber web to a fabric substrate with a solid hot melt adhesive pattern and a method of manufacturing the same.

Another object of the present invention is to provide a moisture-permeable and waterproof fabric capable of increasing the area for carrying out the moisture-permeable function and improving the moisture-permeable efficiency and a method for manufacturing the same.

Another object of the present invention is to provide a method for forming an adhesive which bonds a fabric base material and a nanofiber web to a solid state pattern to perform an environmentally friendly process, and to prevent yellowing, contamination, bleaching or twisting of the breathable waterproof fabric And a method for manufacturing the same.

In order to achieve the above-mentioned object, an embodiment of the present invention provides a fabric substrate comprising: a fabric substrate; A solid hot melt adhesive pattern formed on the fabric substrate; And a nanofiber web adhered to the solid-state hot-melt adhesive pattern, the nanofiber web having a fine pore structure accumulated by nanofibers made of a polymer material.

In addition, an embodiment of the present invention provides a fabric substrate comprising: a fabric substrate; A solid phase hot melt adhesive pattern formed on the fabric substrate; A nanofiber web adhered to the solid hot melt adhesive pattern and having a fine pore structure accumulated by nanofibers made of a polymer material; A top coating layer formed by thinly coating hydrophilic PU on the nanofiber web; And a printed pattern layer printed on the top coat layer.

In addition, one embodiment of the present invention is directed to a method of manufacturing a hot melt adhesive, comprising: forming a solid hot melt adhesive pattern on a fabric substrate; And a step of thermally adhering a nanofiber web having a fine pore structure accumulated by nanofibers made of a polymer material to the fabric base material by using the solid-state hot-melt adhesive pattern. to provide.

In addition, one embodiment of the present invention is directed to a method for forming a hot melt adhesive pattern, comprising: forming a solid hot melt adhesive pattern on a textile substrate; Thermally adhering a nanofiber web having a fine pore structure accumulated by nanofibers made of a polymeric material to the fabric substrate using the solid hot melt adhesive pattern; And forming a top coating layer by coating a hydrophilic PU on the nanofiber web to form a top coating layer.

As described above, in the present invention, the hot-melt adhesive can be coated on the textile base material in a solid pattern.

In the present invention, by realizing the moisture-permeable and waterproof fabric by thermally adhering the nanofiber web to the fabric base material with the solid hot-melt adhesive pattern, the bonded area between the fabric base and the nanofiber web is reduced and the area for performing the moisture- , It is possible to improve the moisture permeation efficiency.

The present invention can provide a technique capable of reducing the weight of a fabric by adhering a nanofiber web in which a lightweight nanofiber is accumulated and lightened to a fabric base material with a solid hot melt adhesive pattern.

According to the present invention, by adhering the fabric substrate and the nanofiber web with a patterned solid-state hot-melt adhesive, it is possible to carry out an environment-friendly process which is harmless to the human body and excellent in air permeability and free of pollution, Yellowing, contamination, bleaching or warpage of the fabric substrate and the adhesion of the fabric substrate to the nanofiber web.

FIGS. 1A and 1B are conceptual sectional views illustrating a method of manufacturing a moisture-permeable and waterproof fabric according to a first embodiment of the present invention;
2 is a conceptual plan view partially illustrating a solid hot melt adhesive pattern coated on a fabric substrate according to a first embodiment of the present invention;
3 is a conceptual cross-sectional view illustrating a solid hot melt adhesive coated on a textile substrate in accordance with a first embodiment of the present invention,
FIG. 4 is a photograph of a fabric substrate coated with a solid-state hot-melt adhesive according to a first embodiment of the present invention,
Figure 5 is a schematic diagram of an apparatus for forming a solid hot melt adhesive pattern on a textile substrate according to a first embodiment of the present invention;
6 is a schematic diagram of an electrospinning apparatus for producing a nanofiber web according to a first embodiment of the present invention;
7A to 7C are conceptual cross-sectional views illustrating a method of manufacturing a moisture-permeable waterproof fabric according to a second embodiment of the present invention,
FIG. 8 is a conceptual cross-sectional view illustrating a method of manufacturing a moisture-permeable waterproof fabric according to a third embodiment of the present invention;
9A and 9B are conceptual diagrams illustrating a method of forming an adhesive on a nanofiber web according to a third embodiment of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may appropriately define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

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

FIG. 1 is a conceptual cross-sectional view illustrating a method of manufacturing a moisture-permeable and waterproof fabric according to a first embodiment of the present invention. FIG. 2 is a cross- 3 is a conceptual cross-sectional view for explaining a solid hot-melt adhesive coated on a fabric substrate according to a first embodiment of the present invention, and Fig. 3 is a schematic cross-sectional view for explaining a solid- 4 is a photograph of a fabric substrate coated with a solid-state hot-melt adhesive according to the first embodiment of the present invention.

1A and 1B, a method of manufacturing a moisture-permeable and waterproof fabric according to a first embodiment of the present invention includes forming a solid-state hot melt adhesive pattern 110 on a fabric substrate 100 such as a fabric, (Fig. 1A). Thereafter, the nanofiber web 200, which is accumulated by the nanofibers made of a polymer material and has a fine pore structure, is thermally adhered to the fabric substrate 100 using the solid-phase hot-melt adhesive pattern 110 )

Here, it is preferable that the solid-state hot-melt adhesive pattern 110 is embodied in a dot-like pattern composed of the solid-state hot-melt adhesive powder separated from each other on the fabric substrate 100 as shown in FIG. 2 and FIG. At this time, when the solid hot-melt adhesive is coated on the fabric substrate 100 in a pattern and then cooled, the solid-state hot-melt adhesive pattern 110 is formed.

Thus, in the present invention, a hot-melt adhesive pattern for bonding is placed only on a local area of the fabric substrate and the nanofiber web by thermally adhering the nanofiber web to the fabric substrate with the solid hot-melt adhesive pattern to bond the fabric substrate to the nanofiber web By increasing the area for carrying out the moisture-permeable function by reducing the area occupied by the moisture-permeable material, the moisture-permeable efficiency can be improved.

On the other hand, in the prior art, when the nanofiber web is heated and pressed to bond the nanofiber web after spraying the liquid adhesive onto the fabric substrate, the distribution of the sprayed liquid adhesive is uneven and the liquid adhesive is applied intensively to the local area , The moisture permeation efficiency is not uniform such that the specific area of the fabric is lowered, and the sprayed liquid adhesive seeps into most areas of the fabric substrate, thereby obstructing the moisture permeation. However, in the present invention, .

The solid-state hot-melt adhesive is thermoplastic and can be one of urethane, polyamide, polyethylene, E.V.A., polyester, and P.V.C.

The nanofiber web 200 is formed by electrospinning a spinning solution in which a polymer material and a solvent are mixed to produce nanofibers and then laminating the nanofibers.

Here, the electrospinning method applied to the present invention may be any one of general electrospinning, air-electrospinning (AES), centrifugal electrospinning, and flash-electrospinning It is also possible to use.

The polymeric material used in the present invention is capable of electrospinning, for example, a hydrophilic polymer and a hydrophobic polymer, and one or more of these polymers may be used in combination.

The polymer material usable in the present invention is not particularly limited as long as it is soluble in an organic solvent for electrospinning and is capable of forming nanofibers by electrospinning. For example, polyvinylidene fluoride (PVdF), poly (vinylidene fluoride-co-hexafluoropropylene), perfluoropolymers, polyvinyl chloride, polyvinylidene chloride or copolymers thereof, polyethylene glycol di Polyoxyethylene-polyoxypropylene oxide, polyethylene glycol derivatives including alkyl ethers and polyethylene glycol dialkyl esters, polyoxides including poly (oxymethylene-oligo-oxyethylene), polyethylene oxide and polypropylene oxide, polyvinyl acetate, poly (vinylpyrrolidone- Vinyl acetate), polystyrene and polystyrene acrylonitrile copolymers, polyacrylonitrile (PAN), polyacrylonitrile copolymers including polyacrylonitrile methyl methacrylate copolymers, polymethyl methacrylate, polymethyl methacrylate Acrylate copolymer or a mixture thereof.

Examples of usable polymer materials include polyamide, polyimide, polyamideimide, poly (meta-phenylene isophthalamide), polysulfone, polyetherketone, polyetherimide, polyethylene terephthalate, , Aromatic polyesters such as polyethylene naphthalate, polyphosphazenes such as polytetrafluoroethylene, polydiphenoxaphospazene, poly {bis [2- (2-methoxyethoxy) Polyurethane copolymers including polyether urethanes, cellulose acetate, cellulose acetate butyrate, and cellulose acetate propionate.

Among the above polymer materials, PAN, polyvinylidene fluoride (PVdF), polyester sulfone (PES) and polystyrene (PS) may be used alone, or polyvinylidene fluoride (PVdF) and polyacrylonitrile ) Or PVDF, PES, PVdF and thermoplastic polyurethane (TPU) may be mixed and used.

Accordingly, the polymer usable in the present invention is not particularly limited to thermosetting and thermosetting polymers capable of electrospinning.

The polymer material in the spinning solution is preferably 5 to 22.5% by weight.

If the content of the polymer material is less than 5% by weight, it is difficult to form a fibrous phase. If the polymer material is not spinned and is sprayed to form a particle rather than a fiber, ), And the volatilization of the solvent is not performed well, so that during the calendering process of the web, the nanofiber web is melted and the pores are clogged. When the content of the polymer material exceeds 22.5% by weight, the viscosity increases and solidification occurs on the surface of the solution, which makes it difficult to spin for a long time, and fiber diameter can not be increased to make a fibrous shape of less than a micrometer size.

For the solvent to be mixed with the polymer substance for preparing the spinning solution, a mono-component solvent such as dimethylformamide (DMF) may be used. In the case of using the two-component solvent, the boiling point it is preferable to use a two-component solvent in which the higher and the lower one are mixed.

In the two-component mixed solvent according to the present invention, the high boiling point solvent and the low boiling point solvent are preferably mixed in a weight ratio of 7: 3 to 9: 1. When the amount of the high boiling point solvent is less than 7, there is a problem that the polymer is not completely dissolved. When the amount of the high boiling point solvent is more than 9, the amount of the low boiling point solvent is too small. The problem that can not be done occurs.

If only a solvent having a high boiling point is used, spinning can not be performed and spraying is performed to form a lot of beads even if particles are formed or spun, The volatilization of the solvent is not performed well, so that during the laminating process of the web, the partial melting occurs and the pore is clogged.

In addition, when only a solvent having a low boiling point is used, since volatilization of the solvent occurs very rapidly, many fibers are generated on the needles of the spinning nozzle and act as a source of radiation trouble.

In the present invention, when the polymer material is PES and PVdF, respectively, the two-component mixed solvent is, for example, acetone (BP-56) as a high boiling point solvent, DMAc (N, N-Dimethylacetoamide: BP- (N-methylpyrrolidone: BP-202 to 204 占 폚) and THF (Terahydrofuran: BP-67 占 폚) in weight ratio of PEI and PVdF, respectively, To 9: 1.

In this case, the mixing ratio between the two-component mixed solvent and the entire polymer material is preferably set to about 8: 2 by weight.

The spinning solution obtained by mixing the polymer material and the solvent is electrospun using a multi-hole spinning pack to obtain a multi-layered nanofiber web, and a thermocompression process, for example, calendering is performed.

Calendering is performed at a high temperature and a high pressure at about 70 to 190 DEG C so that the pore size of the nanofiber web becomes 0.8 mu m or less.

In the present invention, when a nanofiber web is formed, a nanofiber web having a weight of less than 5 gsm and preferably 2 gsm to 3 gsm is accumulated at a weight of 5 gsm to 10 gsm, particularly 2.5 g And bonding the lightweight nanofiber web to the fabric substrate with a solid hot melt adhesive pattern can reduce the weight and manufacturing cost of the breathable waterproof fabric.

4, after the hot-melt adhesive pattern is coated on the fabric substrate 100, the hot-melt adhesive pattern region 110a contacting the fabric substrate 100 by the heat applied while passing through a heating tunnel, Melted and impregnated into the fabric substrate 100. Then, when the hot-melt adhesive agent is cooled after passing through the heating tunnel, the hot-melt adhesive agent pattern becomes a solid state, and the hot-melt adhesive agent pattern region 110a contacting the fabric base material 100 penetrates the inside of the fabric base material 100 , The adhesion strength between the solid-state hot-melt adhesive pattern 110 and the fabric base material 100 is excellent.

As described above, in the present invention, a hot-melt adhesive in a solid state is applied to a textile base material in the form of microdots, so that adhesion to a nanofiber web can be improved.

In addition, in the present invention, a colorless, tasteless, and odorless thermoplastic hot-melt adhesive can be applied to perform an environment-friendly process that is harmless to the human body, has excellent breathability, and is pollution-free, non-toxic, and free from solvent components.

In addition, in the present invention, there is an advantage that a phenomenon such as yellowing, contamination, bleaching or twisting does not occur by bonding the fabric substrate and the nanofiber web with a patterned solid-state hot-melt adhesive.

5 is a schematic block diagram of an apparatus for forming a solid hot melt adhesive pattern on a textile substrate according to a first embodiment of the present invention.

5, an apparatus for forming a solid hot melt adhesive pattern on a fabric substrate includes heating rolls 310 and 311, a coating roll 320, a feed nozzle 330, a heating tunnel 350, cooling rolls 361 and 362, Rolls 371, 372, 373, and 374, and a take-up roll 380. [

The heating rolls 310 and 311 raise the temperature of the fabric substrate 100 before the hot melt adhesive is coated so that the coating of the hot melt adhesive powder in the coating roll 320 is smooth.

A plurality of gravure coating holes (not shown) spaced apart from each other on the roll surface are formed on the coating roll 320. Hot melt adhesive powder sprayed from the supply nozzle 330 is inserted into the holes for gravure coating and is seated. At this time, when the fabric substrate 100 is rolled on the coating roll 320, the hot-melt adhesive powder deposited on the gravure coating hole is transferred onto the fabric substrate 100 and coated. The coating roll 320 may also be coated with a hot-melt adhesive powder while being heated to a predetermined temperature. Here, the size of the hot-melt adhesive powder is preferably from 1 탆 to 100 탆, more preferably from 20 탆 to 30 탆. The size of the hole for gravure coating is designed to be larger than the size of the hot-melt adhesive powder so that the hot-melt adhesive powder can be adhered well to the hole for gravure coating. In addition, the hot-melt adhesive powder may be designed to be placed in the hole for gravure coating in a one-to-one correspondence with the hole for gravure coating.

The heating tunnel 350 passes through the fabric substrate 100 coated with the hot-melt adhesive powder to improve the adhesive strength between the hot-melt adhesive powder and the fabric substrate 100.

The cooling rolls 361 and 362 are formed with through holes at the center and cooling water is allowed to flow through the through holes to allow the hot melt adhesive coated on the fabric substrate 100 when the fabric substrate 100 is rolled on the cooling rolls 361 and 362 Allow the powder to cool to a solid state.

The guide rolls 371, 372, 373, and 374 guide the fabric substrate 100 to be planarized, and the fabric substrate 100 is wound on the take-up roll 380.

Accordingly, the operation of the apparatus for forming a solid hot melt adhesive pattern on the fabric substrate will be described. First, the fabric substrate 100 is supplied to the heating rolls 310 and 311. After the fabric substrate 100 is heated in the heating rolls 310 and 311, the hot melt adhesive powder in the coating roll 320 is coated on the fabric substrate 100 in a pattern. At this time, a large number of holes for gravure coating are formed on the coating roll 320, and the hot-melt adhesive powder injected from the supply nozzle 330 is inserted into the holes for gravure coating.

At this time, the fabric substrate 100 is supplied with the coating roll 320, and the hot-melt adhesive powder inserted in the gravure coating hole is transferred onto the fabric substrate 100 and coated while the coating roll 320 is rolled. Then, the fabric base material 100 coated with the hot-melt adhesive powder is passed through the heating tunnel 350 to increase the adhesive strength of the hot-melt adhesive powder adhered to the fabric base material 100. The fabric base material 100 having passed through the heating tunnel 350 is then rolled to the cooling rolls 361 and 362 and the hot melt adhesive powder passed through the heating tunnel 350 is cooled to a solid state. That is, in the cooling rolls 361 and 362, the hot-melt adhesive powder is cooled and becomes a solid state, and a solid hot-melt adhesive pattern is formed on the fabric substrate 100. Thereafter, the fabric base material 100 is wound on the winding roll 380 through guide rolls 371, 372, 373 and 374.

6 is a schematic diagram of an electrospinning apparatus for manufacturing a nanofiber web according to a first embodiment of the present invention.

The electrospinning apparatus of the present invention comprises a mixing tank 10 in which a spinning solution in which a polymer material and a solvent are mixed is stored, and a high voltage generator connected to the mixing tank 10 to connect the nanofiber web 70 And a collector 50 disposed below the plurality of spinning nozzles 21, 22 and 23 and sequentially stacking the nanofiber web 70. The spinning nozzle 21,

The mixing tank 10 is equipped with a stirrer 11 that mixes the spinning solution uniformly and uses a pneumatic mixing motor 12 as a driving source to maintain the spinning solution at a predetermined viscosity.

In the present invention, air is jetted for each of a plurality of spinning nozzles (21, 22, 23), and air is trapped and accumulated in the nanofibers, whereby a highly rigid nanofiber web can be manufactured. .

A high voltage electrostatic force of 90 to 120 Kv is applied between the collector 50 and the plurality of spinning nozzles 21, 22 and 23 so that the nanofibers 30 are emitted to collect the nanofibers 30 in the collector, 70 are formed. The collector 50 may be a conveyor that automatically transfers the transfer sheet so that the nanofiber web 70 is formed on the transfer sheet (not shown), and a transfer sheet A roll (not shown) is disposed to supply the transfer sheet to the upper surface of the collector 50. A pressing roll (not shown) capable of flattening the surface by pressing (calendering) the nanofiber web 70 may be provided at the rear of the collector 50.

Therefore, in the present invention, by spinning the nanofibers using a transfer sheet, the residual solvent contained in the porous nanofiber web is absorbed, thereby preventing the nanofibers from being melted again by the residual solvent, and the amount of the residual solvent So that it can be appropriately adjusted.

The transfer sheet may be made of, for example, a nonwoven fabric made of a polymer material which is not dissolved by a solvent contained in the paper or a spinning liquid used for spinning, or a polyolefin film such as PE or PP. When the porous nanofiber web itself is used alone, it is difficult to carry out the drying process, the calendering process, and the winding process while being conveyed at a high conveying speed because the tensile strength is low.

Furthermore, after the porous nanofiber web is manufactured, the thermal bonding process with the fabric substrate is difficult to be continuously performed at a high feed rate. However, when the above-mentioned transfer sheet is used, sufficient tensile strength is provided, have. Then, the transporter sheet is removed before thermally bonding the porous nanofiber web and the fabric substrate.

In addition, when only a porous nanofiber web is used, electrostatic phenomenon is caused to adhere to other objects, resulting in poor workability. However, such a problem can be solved when a transfer sheet is used. The transfer sheet is peeled off after a thermal bonding process with the fabric substrate.

In addition, in the present invention, the porous nanofibrous web having a low weight is thermally bonded to the fabric base material, so that the moisture permeable and waterproof effect of the fabric can be improved, and a lightweight fabric can be realized.

7A to 7C are conceptual cross-sectional views illustrating a method of manufacturing a moisture-permeable and waterproof fabric according to a second embodiment of the present invention. FIG. 8 is a cross- 9A and 9B are conceptual diagrams illustrating a method of forming an adhesive on a nanofiber web according to a third embodiment of the present invention.

7A to 7C, a method of manufacturing a moisture-permeable and waterproof fabric according to a second embodiment of the present invention includes forming a water-soluble acrylic layer 105 on a fabric substrate 100 (FIG. 7A) 105 to form a solid-state hot-melt adhesive pattern 110 (Fig. 7B). Next, the nanofiber web 200 having a fine pore structure is accumulated by the nanofibers made of the polymer material and thermally bonded to the fabric substrate 100 (Fig. 7C)

The water-soluble acrylic layer 105 may be formed on the whole or a part of one side of the fabric substrate 100. When the water-soluble acrylic layer 105 is formed on a part of one side of the fabric substrate 100, 110 in the same pattern. The pattern size of the water-soluble acrylic layer 105 is larger than that of the solid-state hot-melt adhesive pattern 110 so that the solid-state hot-melt adhesive pattern 110 does not adhere to the fabric base 100, It can be designed to be bonded.

In the moisture permeable and waterproof fabric according to the second embodiment of the present invention, the water-soluble acrylic layer 105 is interposed between the solid-state hot-melt adhesive pattern 110 and the fabric substrate 100, It is possible to prevent peeling of the solid-state hot-melt adhesive pattern 110 due to an external force because the bonding strength between the pattern 110 and the fabric base material 100 is high.

Referring to FIG. 8, in the method of manufacturing a moisture-permeable and waterproof fabric according to the third embodiment of the present invention, a nanofiber-type adhesive is applied to the nanofiber web 200 by electrospinning or a nanofiber- Hot-melt adhesive pattern 110 and nanofiber-type adhesive or nano-bead-type adhesive 120 between the web 200 and the fabric substrate 100 to thermally adhere. Here, the nanofiber type adhesive or nanofiber type adhesive 120 may be applied between the solid-state hot-melt adhesive patterns 110, that is, between the nanofiber web 200 and the fabric substrate 100 in which the solid- It is preferable that they are located in the region between the two. Since the process of forming the solid-state hot-melt adhesive pattern 110 on the fabric base material 100 and the process of forming the nanofiber-type adhesive or the nano-bead type adhesive 120 on the nanofiber web 200 are separately performed, The nano-fiber type adhesive, or the nano-bead type adhesive 120 may be overlapped with the solid-state hot-melt adhesive pattern 110 by the process.

In addition, in the present invention, a spinning solution or a spraying solution obtained by mixing an adhesive and a solvent is prepared, and the spraying solution is sprayed onto the spraying nozzle 25 as shown in FIG. 9A using the above- The adhesive 121 is adhered to the nanofiber web 200 and the spinning solution is sprayed onto the spinning nozzle 26 as shown in Figure 9b to adhere the nanofiber adhesive 122 to the nanofiber web 200 will be.

Here, one of an epoxy resin, an acrylic resin, a urethane resin, a silicone resin, a phenol resin and a rubber-based adhesive may be used as the adhesive.

When the nanofiber web 200 and the fabric substrate 100 are bonded together by the solid hot melt adhesive pattern 110 a nanofiber adhesive or nano-bead adhesive is applied between the nanofiber web 200 and the fabric substrate 100 The adhesion strength between the nanofiber web 200 and the fabric substrate 100 is improved.

10 is a conceptual cross-sectional view illustrating a method of manufacturing a moisture-permeable and waterproof fabric according to a fourth embodiment of the present invention.

10, a method of manufacturing a moisture-permeable and waterproof fabric according to a fourth embodiment of the present invention includes a fabric substrate 100, a solid-state hot-melt adhesive pattern 110, a nanofiber web 200, a top coating layer 250, And a pattern layer 270 are successively laminated on one another.

That is, in the method of manufacturing the moisture-permeable and waterproof fabric according to the fourth embodiment of the present invention, the top coat layer 250 is formed on the nanofiber web 200 of the moisture-permeable and waterproof fabric of FIG. 1B manufactured in the first embodiment. The top coating layer 250 is formed by adhering a hydrophilic PU in the form of a film or by thin film coating. The thickness of the top coating layer 250 is 5 占 퐉 to 10 占 퐉. The reason for forming the top coating layer is that the top- (To go up well). At this time, the production cost can be reduced by forming the nanofiber web at a weight of 5 gsm, preferably 2 gsm-3 gsm. Thereafter, the print pattern layer 270 is formed on the top coat layer 250 by gravure printing or the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

The present invention provides a breathable waterproof fabric capable of improving the moisture permeability by thermally adhering a nanofiber web to a fabric substrate with a solid hot melt adhesive pattern.

100: fabric base 105: water-soluble acrylic roll
110: solid state hot melt adhesive pattern 200: nanofiber web
310, 311: Heating roll 320: Coating roll
330: Feed nozzle 350: Heating tunnel
361, 362: cooling rolls 371, 372, 373, 374:
380: Winding roll

Claims (22)

Fabric base;
A solid phase hot melt adhesive pattern formed on the fabric substrate; And
And a nanofiber web adhered to the solid-state hot-melt adhesive pattern and having a fine pore structure accumulated by nanofibers made of a polymer material. The moisture-permeable waterproof fabric according to claim 1, wherein the solid-state hot-melt adhesive pattern is a dot-shaped pattern made of solid hot-melt adhesive powder spaced apart from each other. The moisture-permeable waterproof fabric according to claim 2, wherein the hot-melt adhesive powder has a size of 1 탆 to 100 탆. The moisture-proof and waterproof fabric according to claim 1, wherein the solid-state hot-melt adhesive is one of a urethane, a polyamide, a polyethylene, an E.V.A, a polyester, and a PVC. The moisture-permeable waterproof fabric according to claim 1, wherein the hot-melt adhesive pattern area in contact with the fabric base material is permeable to the inside of the fabric base. The breathable waterproof fabric of claim 1, further comprising a nano-bead adhesive or a nanofiber-type adhesive interposed between the fabric substrate and the nanofiber web, the adhesion of the fabric substrate to the nanofiber web. 7. The breathable waterproof fabric of claim 6, wherein the nano-bead adhesive or nano-fiber adhesive is located in a region between the nanofiber web and the fabric substrate where the solid hot melt adhesive pattern is absent. The breathable waterproof fabric of claim 1, further comprising a water soluble acrylic layer interposed between the fabric substrate and the solid hot melt adhesive pattern. The breathable waterproof fabric according to claim 1, wherein the accumulated amount of the nanofibers is less than 5 gsm. Fabric base;
A solid phase hot melt adhesive pattern formed on the fabric substrate;
A nanofiber web adhered to the solid hot melt adhesive pattern and having a fine pore structure accumulated by nanofibers made of a polymer material;
A top coating layer formed by thinly coating hydrophilic PU on the nanofiber web; And
And a printed pattern layer printed on the top coat layer. The moisture-permeable waterproof fabric according to claim 10, wherein the solid-state hot-melt adhesive pattern is a dot-shaped pattern made of solid hot-melt adhesive powder spaced apart from each other. The moisture-permeable waterproof fabric according to claim 11, wherein the size of the hot-melt adhesive powder is 1 탆 to 100 탆. The moisture-proof and waterproof fabric according to claim 10, wherein the solid-state hot-melt adhesive is one of urethane, polyamide, polyethylene, E.V.A., polyester, and P.V.C. 11. The breathable waterproof fabric of claim 10, wherein the hot melt adhesive pattern area adjacent to the fabric substrate is permeable to the inside of the fabric substrate. The breathable waterproof fabric of claim 10, wherein the nanofiber stock is less than 5 gsm. Forming a solid hot melt adhesive pattern on the fabric substrate; And
And thermally adhering a nanofiber web having a fine pore structure to the fabric base by accumulating the nanofibers made of a polymer material using the solid hot melt adhesive pattern. 17. The method of claim 16, wherein prior to forming the solid hot melt adhesive pattern on the fabric substrate,
Performing a step of forming a water-soluble acrylic layer on the fabric substrate,
Wherein the solid hot-melt adhesive pattern is formed on the water-soluble acrylic layer. 17. The nanofiber web according to claim 16, wherein the nanofiber web is adhered with an electrospun nanofiber type adhesive or an electrospun nanofiber type adhesive,
Wherein when the nanofiber web is thermally adhered to the fabric base material by using the solid hot melt adhesive pattern, the nanofiber type adhesive or the nanofiber type adhesive is adhered to the nanofiber web and the fabric base material Gt; 17. The method of claim 16, wherein forming a solid hot melt adhesive pattern on the fabric substrate comprises:
Supplying the fabric substrate to a heating roll and heating the fabric substrate;
The hot rolled textile base material is rolled on a coating roll having a plurality of holes for gravure coating on the roll face and a hot-melt adhesive powder placed on the holes for gravure coating to coat the hot-melt adhesive powder on the fabric base step;
Passing the hot melt adhesive powder coated fabric substrate through a heating tunnel; And
And rolling the fabric substrate passed through the heating tunnel to a cooling roll to change the hot-melt adhesive powder passed through the heating tunnel to a solid state. The method of manufacturing a moisture-permeable and waterproof fabric according to claim 19, wherein the hot-melt adhesive powder has a size of 1 탆 to 100 탆. 20. The method of claim 19, wherein the nanofiber web is formed by electrospinning nanofibers directly on a transporter sheet, wherein the nanofiber web and the fabric substrate are manufactured by forming a breathable waterproof fabric to remove the transporter sheet prior to thermally bonding the nanofiber web and the fabric substrate. Way. Forming a solid hot melt adhesive pattern on the fabric substrate;
Thermally adhering a nanofiber web having a fine pore structure accumulated by nanofibers made of a polymer material to the fabric substrate using the solid hot melt adhesive pattern; And
And forming a top coating layer by coating a hydrophilic PU on the nanofiber web to form a top coating layer.

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