KR102109727B1 - Method of manufacturing Breathable and waterproof fabric - Google Patents

Abstract

The present invention relates to a moisture-permeable waterproof fabric and a method for manufacturing the same, wherein the moisture-permeable waterproof fabric includes a fabric base material; A hot melt web adhered to the fabric substrate and having a plurality of pores; And a porous substrate adhered to the hot melt web and having a plurality of pores.

Description

Method of manufacturing Breathable and waterproof fabric

The present invention relates to a method of manufacturing a moisture-permeable waterproof fabric, and more particularly, to a method of manufacturing a moisture-permeable waterproof fabric that can improve adhesion strength by bonding a fabric substrate and a porous substrate using a hot melt web.

Recently, as interest in health and leisure activities has increased, functional materials have been applied to various fields. In particular, the moisture-permeable and waterproof function is emphasized by the high-end and well-being boom.

The moisture-permeable and waterproof fabric is a functional fabric with excellent moisture-permeable and waterproof properties that discharges sweat and prevents rain.It is applied for mountaineering clothes, outdoor outings, sleeping bags, etc., and for outdoor use in everyday life, and its application range is widening.

The moisture-permeable waterproof fabric prevents water from penetrating, and the sweat from the body becomes water vapor and discharges it to the outside, thereby providing comfort, and the clothing made of the moisture-permeable waterproof fabric is excellent in fit.

Waterproof materials are classified into three types: PTFE film, polyester film, and PU lamination. Gore-Tex is a PTFE film that currently leads the world's moisture-permeable and waterproof market, but the development of new materials that can replace existing moisture-permeable and waterproof materials continues. Is being tried.

Korean Patent Publication No. 10-1106679 consists of polyurethane nanofibers having an average diameter of 1,000 nm or less, and some of the polyurethane nanofibers spray polyurethane nanofiber webs, which are moisture-curable polyurethane nanofibers, and liquid adhesives. A technique for producing a moisture-permeable waterproof fabric by thermocompression bonding with a (Spray) fabric is disclosed. However, these fabrics can facilitate the adhesion process with the fabric by lowering the shrinkage of the polyurethane nanofiber web at room temperature, but by spraying the liquid adhesive, it has a non-uniform coating distribution of the liquid adhesive in the fabric, resulting in moisture permeability. It is not uniform, there is a problem that the liquid adhesive is impregnated into the fabric, hindering moisture permeability.

Therefore, the present inventors continue to research on moisture-permeable and waterproof fabrics that can improve the adhesive strength, and adhere to the fabric substrate and the porous substrate using a hot melt web to implement the fabric, thereby preventing peeling and moisture-permeable waterproofing efficiency. By deriving and inventing the structural characteristics of the fabric that can improve the, the characteristics of the moisture-permeable waterproof fabric can be improved, the moisture-permeable waterproof fabric can be made lighter, and more economical, usable, and competitive inventions have been completed.

Korean Registered Patent Publication No. 10-1106679

The present invention has been devised in view of the problems of the prior art, and its purpose is to implement a moisture-permeable waterproof fabric by thermally bonding a hot melt web having a large number of pores between the fabric substrate and the porous substrate, thereby providing a fabric substrate and a porous substrate. An object of the present invention is to provide a moisture-permeable waterproof fabric and a method for manufacturing the same, which improve adhesive strength, increase moisture-permeable waterproof efficiency, and at the same time uniformize moisture-permeable efficiency.

Another object of the present invention is to provide a moisture-permeable waterproof fabric capable of reducing the weight of the fabric by adhering the lightweight nanofiber web to the fabric substrate with a hot melt web.

Another object of the present invention is to use an adhesive bonding the fabric substrate and the porous substrate as a solid state web to perform an eco-friendly process, and to prevent the phenomenon of yellowing, contamination, bleaching or warping of the moisture-permeable waterproof fabric. It is to provide a moisture-permeable waterproof fabric and a method for manufacturing the same.

In order to achieve the above object, an embodiment of the present invention, a textile substrate; A hot melt web adhered to the fabric substrate and having a plurality of pores; And it is bonded to the hot-melt web, a porous substrate having a plurality of pores; provides a moisture-permeable waterproof fabric comprising a.

In addition, an embodiment of the present invention, interposing a hot melt web between the fabric substrate and the porous substrate to form a laminated structure; And melting the hot melt web to heat-bond the fabric substrate and the porous substrate.

In addition, one embodiment of the present invention, forming a nanofiber web made of nanofibers by electrospinning a spinning solution with a carrier member; Laminating a hot melt web and a fabric substrate on the nanofiber web; And heat-sealing the nanofiber web and the fabric substrate with the hot melt web.

In addition, a method of manufacturing a moisture-permeable waterproof fabric for achieving another object of the present invention comprises: feeding a laminated structure of a fabric substrate, a solid-state hot melt web and a porous substrate with a calender roll to which heat is applied; Melting the solid-state hot-melt web by heat applied from the calender roll and adhering it to the fabric substrate and the porous substrate; And cooling the solid-state hot-melt web adhered to the fabric substrate and the porous substrate by cold air applied from a cooling fan.

In addition, a method of manufacturing a moisture-permeable waterproof fabric for achieving another object of the present invention comprises: preparing a heating and cooling device in which a heating and cooling tunnel in which heaters, compression rolls, and coolers are sequentially arranged from an inlet to an outlet; Feeding a laminated structure of a fabric substrate, a solid hot melt web, and a porous substrate to the inlet of the heating and cooling tunnel; Melting the solid hot melt web with the heat of the heater; Laminating the laminated structure with the pressing roll; And cooling the stacked structure with the cooler.

As described above, in the present invention, by interposing the hot melt web between the fabric substrate and the porous substrate, by thermally bonding the fabric substrate and the porous substrate with a hot melt web to implement a moisture-permeable waterproof fabric, by the pores of the hot melt web and the porous substrate , It is possible to improve the water vapor transmission efficiency and waterproof efficiency, there is an advantage that can uniform the water vapor transmission efficiency.

In the present invention, the weight and production cost of the moisture-permeable waterproof fabric can be reduced by adhering the lightweight nanofiber web to the fabric substrate with a hot melt web.

Since the moisture-permeable waterproof fabric according to the present invention has pores of a hot melt web and pores of a porous substrate, it is possible to improve the moisture permeation efficiency.

In addition, in the present invention, by increasing the adhesive area between the fabric substrate and the porous substrate with a sheeted hot melt web, the web improves the adhesion strength between the fabric substrate and the porous substrate, thereby preventing the phenomenon of peeling the porous substrate from the fabric substrate can do.

In addition, in the present invention, a colorless, tasteless, and odorless thermoplastic hot melt web is applied, thereby making it harmless to the human body and excellent in breathability, and can perform an environmentally friendly process without pollution, non-toxicity, and without solvent components.

In addition, in the present invention, by bonding the fabric substrate and the nanofiber web with a sheeted hot melt web, there is an advantage that the phenomenon of yellowing, contamination, bleaching or warping does not occur.

1 is a conceptual cross-sectional view of a moisture-permeable waterproof fabric according to an embodiment of the present invention,
2 is a schematic partial view for explaining a hot melt web applied to a moisture-permeable waterproof fabric according to an embodiment of the present invention,
3 is a flow chart of a method for manufacturing a moisture-permeable waterproof fabric according to an embodiment of the present invention,
4 is a conceptual diagram for explaining a process of calendaring a laminated structure according to an embodiment of the present invention,
5 is a schematic configuration diagram of an electrospinning apparatus for manufacturing a nanofiber web according to the present invention,
6A to 6C are conceptual cross-sectional views for explaining a modified example of a method for manufacturing a moisture-permeable waterproof fabric according to an embodiment of the present invention,
7 is a device configuration diagram of a calender roll type for bonding a fabric substrate and a porous substrate to a solid hot melt web according to the present invention,
8 is a schematic diagram of a device of a flat plate laminating type for bonding a fabric substrate and a porous substrate to a solid hot melt web according to the present invention.

The terms or words used in the present specification and claims should not be interpreted as being limited to ordinary or lexical meanings, and the inventor can appropriately define the concept of terms in order to best describe his or her invention. Based on the principle that it should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Therefore, the embodiments shown in the embodiments and the drawings described in this specification are only the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that there may be equivalents and variations.

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

1 is a conceptual cross-sectional view of a moisture-permeable waterproof fabric according to an embodiment of the present invention, and FIG. 2 is a schematic partial view for explaining a hot melt web applied to the moisture-permeable waterproof fabric according to an embodiment of the present invention.

1, a moisture-permeable waterproof fabric according to an embodiment of the present invention includes a fabric substrate 100, such as a fabric; A hot melt web 110 bonded to the fabric substrate 100 and having a plurality of pores; And a porous substrate 120 adhered to the hot melt web 110 and having a plurality of pores.

Here, the hot-melt web 110 is a web form having a plurality of pores 112 in which fibers 111 made of a hot-melt material are accumulated, as shown in FIG. 2, and has a sheet shape in a solid state.

As described above, in the present invention, after the hot melt web 110 is interposed between the fabric substrate 100 and the porous substrate 120, the fabric substrate 100 and the porous substrate 120 are thermally adhered to the hot melt web 110. It is to realize a moisture-permeable waterproof fabric.

Here, the fabric substrate 100 is a fabric such as a fabric, and includes all materials for manufacturing casual clothes, sports clothes, and the like.

Therefore, the moisture-permeable waterproof fabric according to the present invention has the pores of the hot melt web 110 and the pores of the porous substrate 120, and thus can improve air permeability and improve moisture permeability and waterproof efficiency.

Here, the pores of the porous substrate 120 are to substantially perform the moisture-permeable and waterproof function, and must have an appropriate size for performing the moisture-permeable and waterproof function, and the pores of the hot melt web 110 are of the porous substrate 120 It should be large enough to allow moisture that has escaped through the pores to pass smoothly.

At this time, the pores of the hot melt web 110 are preferably larger than the pores of the porous substrate 120. Here, the size of the pores of the hot melt web 110 is 100 ~ 10000㎛, the size of the pores of the porous substrate 120 is preferably 0.8㎛ or less.

That is, the hot melt web 110 is melted and participates in adhesion. When the melted hot melt material closes the pores, the moisture permeation function may deteriorate, so the pore size of the hot melt web 110 closes the pores. It should be set to a size larger than the pores of the porous substrate 120, because it should have a size not to be.

And, the fiber diameter of the hot melt web 110 is 10 ~ 100㎛, the diameter of the nanofibers of the porous substrate 120 is preferably 0.5 ~ 1.5㎛, the accumulation amount of fibers of the hot melt web 110 is 10 ~ 20gsm , And the accumulation amount of the porous substrate 120 is preferably less than 5gsm.

As described above, in the present invention, the sheeted hot melt web is adhered to the fabric substrate and the porous substrate, thereby increasing the adhesion area to improve the adhesion strength between the fabric substrate and the porous substrate, thereby preventing the porous substrate from peeling off the fabric substrate. can do.

In addition, the hot melt web 110 may be made of one of polyamide hot melt, polyester hot melt, polyurethane hot melt, polyolefin hot melt, and EVA (Ethylene Vinyl Acetate) hot melt. .

In addition, the melting point of the hot melt web 110 is preferably 150 ° C. or less, and the melt index is preferably 5 to 500 g / 10 min.

That is, when the melt index is 5g / 10min or less, the adhesive strength between the hot melt web 110 and the fabric substrate 100 and the porous substrate 120 decreases, and when it is 500g / 10min or more, the melted hot melt web 110 is a fabric substrate Penetrating into the (100) and the porous substrate 120, the water pressure is reduced.

On the other hand, in the prior art, when spraying a liquid adhesive on the fabric substrate, and then bonding the porous substrate, the distribution of the sprayed liquid adhesive is non-uniform, and the liquid adhesive is intensively applied to the local area, so that a specific area of the fabric is breathable There is a problem in that the moisture permeation efficiency is not uniform, such as a decrease in efficiency, and the sprayed liquid adhesive permeates most areas of the fabric substrate, thereby preventing moisture permeation, but in the present invention, there is a technical feature to solve the problem.

In addition, the porous substrate 120 is preferably embodied as a nanofiber web formed by laminating nanofibers by electrospinning a spinning solution in which a polymer material and a solvent are mixed, and stacking the nanofibers.

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

The polymer material used in the present invention is capable of electrospinning, for example, a hydrophilic polymer and a hydrophobic polymer, and these polymers can be used by mixing one or two or more.

The polymer material usable in the present invention is not particularly limited as long as it can be dissolved in an organic solvent for electrospinning and can form nanofibers by electrospinning. For example, polyvinylidene fluoride (PVdF), poly (vinylidenefluoride-co-hexafluoropropylene), perfuropolymer, polyvinylchloride, polyvinylidene chloride or copolymers thereof, polyethylene glycol di Polyethylene glycol derivatives including alkyl ethers and polyethylene glycol dialkyl esters, poly (oxymethylene-oligo-oxyethylene), polyoxides including polyethylene oxide and polypropylene oxide, polyvinyl acetate, poly (vinylpyrrolidone- Vinyl acetate), polystyrene and polystyrene acrylonitrile copolymers, polyacrylonitrile (PAN), polyacrylonitrile copolymers including polyacrylonitrile methyl methacrylate copolymer, polymethyl methacrylate, polymethyl methacrylate Acrylate copolymers or mixtures thereof.

In addition, polymer materials that can be used include polyamide, polyimide, polyamideimide, poly (meth-phenylene isophthalamide), polysulfone, polyether ketone, polyetherimide, polyethylene telephthalate, and polytrimethylene telephthalate. , Aromatic polyesters such as polyethylene naphthalate, polytetrafluoroethylene, polydiphenoxyphosphazene, polyphosphazenes such as poly {bis [2- (2-methoxyethoxy) phosphagen]}, polyurethane and Polyurethane copolymers including polyether urethane, cellulose acetate, cellulose acetate butyrate, cellulose acetate propionate, and the like.

Therefore, the polymer usable in the present invention is not particularly limited to a thermoplastic and thermosetting polymer capable of electrospinning.

When preparing the spinning solution, the polymer material is preferably 5 to 22.5% by weight.

Here, when the content of the polymer material is less than 5% by weight, it is difficult to form a fibrous material, and spinning is not achieved and it is sprayed, so even if particles other than fibers are formed or spun, beads are formed. ) Is formed a lot, and the volatilization of the solvent is not performed well, so that the porous substrate is melted during the calendering process of the web and clogged pores. In addition, when the content of the polymer material exceeds 22.5% by weight, the viscosity rises and solidification occurs on the surface of the solution, which makes it difficult to spin for a long time, and the fiber diameter increases, so that a fiber having a size of less than a micrometer cannot be formed.

In order to prepare a spinning solution, a solvent mixed with a polymer material may use a monocomponent solvent, for example, dimethylformamide (DMF), but boiling point (BP: boiling) when using a bicomponent solvent. It is preferable to use a two-component solvent in which high and low points are mixed.

The two-component mixed solvent according to the present invention is preferably used by mixing a high boiling point solvent and a low boiling point solvent in a weight ratio of 7: 3 to 9: 1. When the high boiling point solvent is less than 7, there is a problem that the polymer is not completely dissolved, and when it exceeds 9, the low boiling point solvent is too small to volatilize the solvent from the spun fiber, so the formation of the web is smooth. There is a problem that cannot be done.

If only a solvent with a high boiling point is used, spinning is not achieved, and it becomes spray, so even if particles (not particles) are formed or spinning, beads are formed. Since the solvent does not volatilize well, it is partially melted during the lamination process of the web, resulting in clogging of pores.

In addition, when only a solvent having a low boiling point is used, since the volatilization of the solvent occurs very quickly, a lot of fine fibers are generated in the needle of the spinning nozzle, which acts as a cause of spinning trouble.

In the present invention, when the polymer materials are PES and PVdF, respectively, the two-component mixed solvent is, for example, DMAc (N, N-Dimethylacetoamide: BP-165 ° C) as a high boiling point solvent and acetone (acetone: BP-56) as a low boiling point solvent. ℃) can be used by mixing in a weight ratio of 9: 1, and also when the polymer materials are PEI and PVdF, NMP (N-methylpyrrolidone: BP-202 to 204 ° C) and THF (Terahydrofuran: BP-67 ° C) It can be used by mixing with 9: 1.

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

After electrospinning the spinning solution in which the above-described polymer material and solvent are mixed using a multi-hole spinning pack, a porous substrate formed in a multi-layer is obtained, and a thermal compression process, for example, calendering is performed.

Here, the calendering is performed at a high temperature and high pressure at approximately 70 to 190 ° C. so that the pore size of the nanofiber web is 0.8 μm or less.

In the present invention, when forming the nanofiber web, the accumulation amount of the nanofibers is set to less than 5 gsm to accumulate low-weight nanofibers to form a lightweight nanofiber web, and attach the lightweight nanofiber web to a fabric substrate with a hot melt web. By doing so, it is possible to reduce the weight and manufacturing cost of the moisture-permeable waterproof fabric.

3 is a flowchart of a method of manufacturing a moisture-permeable waterproof fabric according to an embodiment of the present invention, and FIG. 4 is a conceptual diagram for explaining a process of calendaring a laminated structure according to an embodiment of the present invention.

Referring to Figure 3, the method of manufacturing the moisture-permeable waterproof fabric according to the present invention, first, a hot melt web is interposed between the fabric substrate and the porous substrate to implement a laminated structure (S100). Thereafter, the laminated structure is calendered and thermally adhered (S110).

That is, the 'S110' step is to heat-bond the fabric substrate and the porous substrate by melting the hot melt web.

Here, the porous substrate may be one of a nanofiber web having a large number of pores, nonwoven fabric, and a stacked structure thereof, which are integrated by nanofibers.

And, in the 'S110' step, as shown in FIG. 4, the calendering process is performed while the lamination structure 200 passes between the rollers 251 and 252 to which heat is applied.

* Here, the heat applied from the rollers 251 and 252 melts the hot melt web interposed in the fabric substrate and the porous substrate forming a laminated structure, and the hot melt material melted in the hot melt web is adhered to the fabric substrate and the porous substrate, respectively.

At this time, when the laminated structure 200 passes through the rollers 251 and 252, the laminated structure 200 is instantaneously applied with heat from the rollers 251 and 252, so that it contacts the fabric substrate and the porous substrate of the laminated structure 200, respectively. The hot melt web area is melted, and as the laminated structure 200 passes through the rollers 251 and 252, the melted hot melt web area is adhered to the fabric substrate and the porous substrate, respectively.

Here, the hot melt web regions located at the interface with each of the fabric substrate and the porous substrate are melted to participate in the bonding process, and the inner region of the hot melt web is not melted and does not participate in the bonding process.

As such, the melted hot melt penetrates into a predetermined area of the surface of the fabric substrate, and further increases the adhesive strength between the hot melt web and the fabric substrate, and the hot melt web and the porous substrate, thereby preventing the moisture-permeable waterproof fabric of the present invention from being peeled off. It can improve reliability.

As described above, in the present invention, since the adhesive area can be increased by adhering the fabric substrate and the porous substrate with a hot melt web, it is possible to improve the adhesion of the fabric substrate and the porous substrate.

In addition, in the present invention, by applying a colorless, tasteless, odorless thermoplastic hot melt web, it is harmless to the human body and has excellent air permeability, and can perform an environmentally friendly process without pollution, non-toxicity, and without solvent components.

In addition, in the present invention, by bonding the fabric substrate and the porous substrate with a sheeted hot melt web, there is an advantage that does not occur, such as yellowing, contamination, bleaching or warping.

5 is a schematic configuration diagram of an electrospinning apparatus for manufacturing a nanofiber web according to the present invention.

The electrospinning apparatus of the present invention is 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 is connected and connected to the mixing tank (10) to connect the nanofiber web (70). It includes a plurality of spinning nozzles (21,22,23) to be formed, and a collector (50) disposed on the lower side of the plurality of spinning nozzles (21,22,23) to sequentially stack the nanofiber web (70).

The mixing tank 10 is equipped with a stirrer 11 that uses a mixing motor 12 using pneumatics as a driving source to uniformly mix the spinning solution and to maintain a constant viscosity of the spinning solution.

In the present invention, air is injected into each of a plurality of spinning nozzles 21, 22, and 23 to collect and accumulate nanofibers, thereby producing a high-stiffness nanofiber web, and spinning troubles that may occur while the nanofibers are flying. Reduces it.

Between the collector 50 and the plurality of spinning nozzles 21, 22, and 23, nanofibers 30 are radiated as high voltage electrostatic force of 90 to 120 Kv is applied, and nanofibers 30 are collected in the collectors, and the nanofiber webs ( 70). 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 on which a paper transfer sheet is wound in front of the collector 50. A roll (not shown) is disposed to supply the transfer sheet to the top surface of the collector 50. In addition, a pressure roll (not shown) that can flatten the surface by pressing (calendaring) the nanofiber web 70 may be provided at the rear of the collector 50.

Therefore, in the present invention, the nanofibers are spun using a transfer sheet to absorb residual solvents contained in the porous nanofiber web, thereby preventing the nanofibers from being melted again by the residual solvents and reducing the amount of residual solvents. It can be adjusted appropriately.

The transfer sheet may be, for example, a paper or a polyolefin-based film made of a non-woven fabric made of a polymer material that does not dissolve by a solvent contained therein when spinning a mixed spinning solution, PE, PP, or the like. When it is made of the porous nanofiber web itself, the tensile strength is low, so it is difficult to perform a drying process, a calendering process, and a winding process while being transported with a high feed rate.

Moreover, after preparing the porous nanofiber web, it is difficult to continuously perform a thermal bonding process with a fabric substrate with a high feed rate, but when using the transfer sheet described above, the process speed can be greatly increased by providing sufficient tensile strength. have.

In addition, when only the porous nanofiber web is used, the phenomenon of sticking to other objects due to static electricity occurs, resulting in poor workability, but this problem can be solved when using a transfer sheet. The transfer sheet is removed after being subjected to a thermal bonding process with the fabric substrate.

In addition, in the present invention, by thermally bonding a low weight porous nanofiber web with a fabric substrate, it is possible to improve the moisture permeability and waterproof effect of the fabric, as well as realize a lightweight fabric.

On the other hand, in the present invention, as an electrospinning apparatus for manufacturing the nanofiber web shown in FIG. 5, the spinning solution in which a hot melt material and a solvent are mixed is electrospun to form a web-shaped hot melt web having pores in which hot melt fibers are accumulated. It can also be manufactured.

6A to 6C are conceptual cross-sectional views for explaining a modification of a method for manufacturing a moisture-permeable waterproof fabric according to an embodiment of the present invention.

Referring to Figures 6a to 6c, the method of manufacturing the moisture-permeable waterproof fabric according to an embodiment of the present invention is a nano made of nanofibers (121a) by electrospinning the spinning solution from the spinning nozzle (20) to the carrier member (300) The fiber web 120 is formed (FIG. 6A).

Here, the carrier member 300 may be applied to release paper, non-woven fabric, fabric, etc., and the carrier member 300 may function as a base substrate for handling of the nanofiber web 120 or external physical force. It is used to perform other additional functions, such as protecting the nanofiber web 120.

Thereafter, the hot-melt web 110 and the fabric substrate 100 are stacked on the nano-fiber web 120 and calendered to heat-bond the nano-fiber web 120 and the fabric substrate 100 with the hot-melt web 110 ( Figure 6b). The calendering is performed by passing the structure in which the carrier member 300, the nanofiber web 120, the hot melt web 110, and the fabric substrate 100 are laminated through rollers 251 and 252.

At this time, the nano-fiber web 120, the hot-melt web 110, and the fabric base 100 formed by electrospinning on the carrier member 300 are each fed between rollers 251 and 252 and stacked between the rollers 251 and 252. It is also possible to perform a calendaring process.

Subsequently, as shown in FIG. 6C, the carrier member 300 is detached from the nanofiber web 120, and the moisture-permeable waterproof fabric made of the nanofiber web 120, the hot melt web 110 and the fabric base 100 is formed. Complete manufacturing.

At this time, when the carrier member 300 is a release paper, it is preferable to detach from the nanofiber web 120, and if the carrier member 300 is a nonwoven fabric or a fabric, the process of detaching from the nanofiber web 120 is not performed. It may not.

Figure 7 is a device configuration diagram of a calender roll type for bonding a fabric substrate and a porous substrate to a solid-state hot-melt web according to the present invention, and Figure 8 is a flat plate for bonding the fabric substrate and a porous substrate to a solid-state hot-melt web according to the present invention It is a laminating type device configuration.

In the present invention, the process of bonding the fabric substrate and the porous substrate by melting the hot melt web interposed between the fabric substrate and the porous substrate may be performed in a calender roll type apparatus as shown in FIG. 7 or a flat plate laminating type apparatus as shown in FIG. 8. Can be.

That is, in the process using the calender roll type device, the fabric base 1201a wound on the first to third supply rolls 1201, 1202, 1203, the solid hot melt web 1202a, and the porous base 1203a are guide bars ( 1211,1222,1223) and driven rolls (1231,1232) are laminated to feed the calender rolls (1253a, 1253b) to which heat is applied.

Thereafter, the solid-state hot-melt web 1202a is melted by heat applied from the calender rolls 1253a and 1252b, and then melted by the cold air applied from the cooling fan 1270 while being rolled on the driving rolls 1261, 1262 and 1263. After the solid-state hot-melt web 1202a is cooled, it is adhered to the fabric substrate 1201a and the porous substrate 1203a, and then the process of winding up in the winding roll 1280 is performed.

Here, when the solid-state hot-melt web 1202a is melted, it contacts and penetrates the surfaces of the fabric substrate 1201a and the porous substrate 1203a, and the solid-state hot-melt web 1202a to which cold air is applied is cooled in a molten state to cool the fabric substrate ( The solid-state hot-melt web 1202a interposed between the fabric substrate 1201a and the porous substrate 1203a is fixed to the surfaces of the 1201a) and the porous substrate 1203a, so that the fabric substrate 1201a and the porous substrate 1203a are melted and cooled. ).

And, the process in the flat laminating type apparatus is to use a flat-shaped heating and cooling apparatus 1295, first, the fabric substrate 1291a wound on the fourth to sixth supply rolls 1291,1292,1293, The solid-state hot-melt web 1292a and the porous substrate 1293a are fed into the heating and cooling tunnel 1295a of the heating and cooling device 1295. At this time, the fabric substrate 1291a, the solid-state hot-melt web 1292a, and the porous substrate 1293a are fed to the heating and cooling tunnel 1295a in a stacked state.

Meanwhile, a heater 1295b, a press roll 1295c, and a cooler 1295d are sequentially arranged in the heating and cooling tunnel 1295a.

Therefore, when the laminated structure of the fabric substrate 1291a, the solid-state hot-melt web 1292a, and the porous substrate 1293a passes through the heating and cooling tunnel 1295a, a melting, compression, and cooling process is performed to perform the fabric substrate 1291a and The porous substrate 1293a is adhered by a solid-state hot-melt web 1292a.

That is, when feeding the heating and cooling tunnel 1295a, the laminated fabric substrate 1291a, the solid hot melt web 1292a, and the porous substrate 1293a are fed, the fabric substrate 1231a laminated by the conveyor belt 1294 ), The solid-state hot-melt web 1292a and the porous substrate 1293a pass through the heating and cooling tunnel 1295a. At this time, first, the heat of the heater 1295b located in the inlet area of the heating and cooling tunnel 1295a melts the solid-state hot-melt web 1292a, and thereafter, compresses arranged in the central region of the heating and cooling tunnel 1295a. By laminating the laminated structure with a roll 1295c, and cooling the laminated structure with a cooler 1295d installed in the exit area of the heating and cooling tunnel 1295a, the solid-state hot-melt web 1292a is woven into a fabric substrate 1291a and a porous substrate ( 1293a).

Subsequently, in the heating and cooling tunnel 1295a, the moisture-permeable waterproof fabric 1296 of the present invention is wound, in which the fabric substrate 1291a and the porous substrate 1293a are bonded with a solid-state hot-melt web 1292a.

For reference, in the calendar roll type apparatus of FIG. 7, the process proceeds from left to right, and in the flat plate laminating type apparatus of FIG. 8, the process proceeds from right to left.

In the above, the present invention has been shown and described with reference to specific preferred embodiments, for example, but the present invention is not limited to the above-described embodiments, and is within the scope of the present invention without departing from the spirit of the present invention. Various changes and modifications will be possible by those who have.

The present invention provides a moisture-permeable waterproof fabric capable of preventing peeling by thermally bonding a porous substrate to a fabric substrate with a hot melt web.

100: fabric base 110: hot melt web
111: fiber 112: pore
120: porous substrate 121: nano fiber web
121a: nanofiber 200: laminated structure
251,252: roller 300: no carrier

Claims (6)

Forming a laminated structure by interposing a hot melt web having a plurality of pores between the fabric substrate and the porous substrate having a plurality of pores; And
A method of manufacturing a moisture-permeable waterproof fabric comprising; melting the hot melt web to heat-bond the fabric substrate and the porous substrate;
The pores of the hot melt web are set to a larger size than the pores of the porous substrate,
The porous substrate is prepared by electrospinning of a spinning solution composed of a polymer material and a solvent, and the solvent is a method for producing a moisture-permeable waterproof fabric which is a two-component mixed solvent having a different boiling point. According to claim 1, The step of thermally bonding the fabric substrate and the porous substrate by melting the hot melt web,
Method of manufacturing a moisture-permeable waterproof fabric for thermally bonding the fabric substrate and the porous substrate by a calendering process in which the laminated structure passes between rollers to which heat is applied. Electrospinning the spinning solution with a carrier member to form nanofiber webs made of nanofibers and having multiple pores;
Sequentially laminating a hot melt web having a plurality of pores and a fabric substrate on the nanofiber web; And
A method of manufacturing a moisture-permeable waterproof fabric comprising; thermally bonding the nanofiber web and the textile substrate with the hot melt web;
The pores of the hot melt web are set to a larger size than the pores of the nanofiber web,
The nanofiber web is prepared by electrospinning of a spinning solution composed of a polymer material and a solvent, and the solvent is a method for producing a moisture-permeable waterproof fabric which is a two-component mixed solvent having a different boiling point. According to claim 3, After the step of thermal bonding,
A method of manufacturing a moisture-permeable waterproof fabric further comprising the step of separating the carrier member from the nano-fiber web to produce a moisture-permeable waterproof fabric comprising the nano-fiber web, the hot melt web, and the fabric substrate. The method of claim 3, wherein the carrier member is any one of release paper, non-woven fabric, and fabric. Feeding a laminated structure consisting of a fabric substrate, a solid-state hot-melt web having multiple pores, and a porous substrate having multiple pores with a calender roll to which heat is applied;
Melting the solid hot melt web by heat applied from the calender roll to bond the fabric substrate and the porous substrate; And
Cooling the solid hot melt web adhered to the fabric substrate and the porous substrate by cold air applied from a cooling fan; As a method of manufacturing a moisture-permeable waterproof fabric comprising:
The pores of the solid hot melt web are set to a larger size than the pores of the porous substrate,
The porous substrate is prepared by electrospinning of a spinning solution composed of a polymer material and a solvent, and the solvent is a method for producing a moisture-permeable waterproof fabric which is a two-component mixed solvent having a different boiling point.

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