KR102816115B1 - Coating fabric and its manufacturing method with enhanced UV protection - Google Patents

Abstract

The present invention relates to a coated fabric with enhanced ultraviolet ray blocking properties and a method for manufacturing the same, and more specifically, to a coating composition capable of imparting excellent ultraviolet ray blocking properties to all fabrics made of natural fibers or synthetic fibers and a method for manufacturing a coated fabric using the same.

Description

Coating fabric with enhanced UV protection and its manufacturing method {Coating fabric and its manufacturing method with enhanced UV protection}

The present invention relates to a coated fabric with enhanced ultraviolet ray blocking properties and a method for manufacturing the same, and more specifically, to a coating composition capable of imparting excellent ultraviolet ray blocking properties to all fabrics made of natural fibers or synthetic fibers and a method for manufacturing a coated fabric using the same.

In general, coatings on textile fabrics use adhesive resins such as acrylic or polyvinyl chloride (PVC) to form a sealed film, which gives them water-repellent properties that are impermeable to air and impermeable to moisture. However, they have been unsuitable for use in everyday clothing other than industrial or special purposes that require air or moisture shielding.

Recently, the demand for antibacterial and deodorizing functions has been increasing for general clothing and household fabrics made of various materials. In this case, breathability and moisture absorption are required as basic physical properties. In the past, the method of adding antibacterial or deodorizing agents to synthetic resins such as acrylic or polyvinyl chloride and coating the surface of the fabric with a mixture of the raw materials was mainly used.

However, the above method, while imparting antibacterial and deodorizing functions, not only makes the surface of the fabric stiff, but also reduces the texture, and it is difficult to impart physical properties such as breathability and absorbency, so there was a problem that it was difficult to apply to fabrics used for general clothing or daily necessities.

In order to solve the above problems, a method has been attempted recently of simply physically mixing antibacterial or deodorizing ingredients in a water-soluble or solvent-soluble solution and applying the resulting mixture to the surface of the fabric. However, this method has the problem that the ingredients applied to the surface of the fabric easily come off due to low durability when washed, and the effect does not last.

Korean Patent Registration No. 10-0755019 (August 28, 2007) Korean Patent Registration No. 10-0839898 (June 13, 2008)

The purpose of the present invention is to provide a method for manufacturing a coated fabric with improved antifungal, antibacterial, deodorizing and durability, which exhibits an excellent coating effect on all fabrics made of natural or synthetic fibers, and which maintains the inherent touch, breathability and moisture absorption of the fabric while also exhibiting excellent antibacterial, antifungal, flame retardant, ultraviolet ray blocking and deodorizing properties, as well as excellent durability when washed.

Another object of the present invention is to provide a method for manufacturing a coated fabric in which a coating agent is firmly formed using a fabric having a silicate film formed thereon, thereby further improving the color fastness to washing.

Another object of the present invention is to provide a method for manufacturing a coated fabric imparted with flame retardancy, water repellency and ultraviolet ray blocking performance by further containing an additive comprising at least one selected from the group consisting of a flame retardant, a water repellent and an ultraviolet ray blocking agent.

The object of the present invention is achieved by providing a method for manufacturing a coated fabric with improved antifungal, antibacterial, deodorizing and durability properties, characterized by comprising a polymerization step of mixing and reacting 100 parts by weight of water-soluble polyurethane, 1 to 10 parts by weight of water-soluble silicone, 0.1 to 2 parts by weight of a curing agent, 0.001 to 0.01 parts by weight of a catalyst and 0.1 to 5 parts by weight of an antibacterial and antifungal agent to manufacture a polymer, a silicate film formation step of forming a silicate film on the surface of a fabric, and a coating and curing step of coating and curing the polymer manufactured through the polymerization step on the surface of the fabric on which the silicate film has been formed through the silicate film formation step.

According to a preferred feature of the present invention, the antibacterial and antifungal agent comprises at least one selected from the group consisting of diisomethyl-p-tolylsulfone, 2,4,5,6-tetrachloroisophthalonitrile, 2-(thiocyanato methylthio)benzothiazole, tebuconazole, N-butyl-1,2-benzylisothiazolin-3-one, dodecyl guanidine hydrochloride, and zinc pyrithione.

According to a more preferred feature of the present invention, in the polymer preparation step, 0.1 to 20 parts by weight of an additive is further contained relative to 100 parts by weight of the water-soluble polyurethane, and the additive comprises at least one selected from the group consisting of a flame retardant, a water repellent, and an ultraviolet ray blocker, wherein the flame retardant comprises a phosphorus-based flame retardant, the water repellent comprises a C0-based water repellent that does not contain fluorine, and the ultraviolet ray blocker comprises at least one selected from the group consisting of titanium dioxide and zinc oxide.

According to a further preferred feature of the present invention, the silicate film has a thickness of 30 to 50 angstroms and an average surface roughness Ra of 10 to 200 nm.

According to a further preferred feature of the present invention, the coating curing step is performed by coating the mixture prepared through the polymer preparation step on the surface of the fabric at 1 to 10 g/ ^m2 and curing at a temperature of 60 to 110°C for 3 to 20 minutes.

The method for manufacturing a coated fabric with enhanced UV protection according to the present invention exhibits an excellent coating effect on all fabrics made of natural or synthetic fibers, and exhibits an excellent effect of providing a coated fabric with enhanced antifungal, antibacterial, deodorizing and durability, which not only maintains the inherent touch, breathability and moisture absorbency of the fabric, but also has excellent antibacterial, antifungal, flame retardancy, UV protection and deodorizing properties, but also exhibits excellent durability when washed.

In addition, since the coating agent is firmly formed by using a fabric on which a silicate film is formed, it exhibits an excellent effect of providing a coated fabric with improved wash fastness.

Hereinafter, preferred embodiments of the present invention and the properties of each component will be described in detail. However, this is intended to be a detailed description to enable a person having ordinary skill in the art to which the present invention pertains to easily carry out the invention, and does not mean that the technical idea and scope of the present invention are limited thereby.

The method for manufacturing a coated fabric with improved antifungal, antibacterial, deodorizing and durability according to the present invention comprises a polymer manufacturing step (S101) of mixing and reacting water-soluble polyurethane, water-soluble silicone, a curing agent, a catalyst and an antibacterial and antifungal agent to manufacture a polymer, a silicate film forming step (S101-1) of forming a silicate film on the surface of the fabric, and a coating curing step (S103) of coating and curing the polymer manufactured through the polymer manufacturing step (S101) on the surface of the fabric on which the silicate film has been formed through the silicate film forming step (S101-1).

The above polymer preparation step (S101) is a step of preparing a polymer by mixing and reacting water-soluble polyurethane, water-soluble silicone, a curing agent, a catalyst, and an antibacterial and antifungal agent. It is preferable that the step be comprised of a process of mixing and reacting 100 parts by weight of water-soluble polyurethane, 1 to 10 parts by weight of water-soluble silicone, 0.1 to 2 parts by weight of curing agent, 0.001 to 0.01 parts by weight of catalyst, and 0.1 to 5 parts by weight of antibacterial and antifungal agent.

The above water-soluble polyurethane is a compound manufactured by dispersing a substance having a urethane group (-NHCOO-GROUP) in water (H ₂ O) through a reaction between an isocyanate group (NCO GROUP) and a hydroxyl group (OH GROUP). The reaction of the water-soluble polyurethane is a reaction between HO-R-OH (polyol) and OCN-R-NCO (isocyanate) to form [-CONHRNHCOORO ^- ]N (polyurethane).

The water-soluble silicone is contained in an amount of 1 to 10 parts by weight, and not only improves the adhesion and flexibility of the polymer coated on the surface of the fabric, but also prevents the coating component made of the polymer coated on the fabric from easily peeling off during washing. If the content of the water-soluble silicone is less than 1 part by weight, the effect is minimal, and if the content of the water-soluble silicone exceeds 10 parts by weight, the effect is not significantly improved, but the content of the water-soluble polyurethane is relatively excessively reduced, which may lower the adhesion of the polymer.

The curing agent is contained at 0.1 to 2 parts by weight, and serves to cure the mixture composed of the water-soluble polyurethane and the water-soluble silicone to improve viscosity and to form a uniform coating film on the surface of the fabric. The component of the curing agent is not particularly limited as long as it can cure the mixture composed of the water-soluble polyurethane and the water-soluble silicone, and any curing agent may be used, but it is preferable that it is composed of diaminonitrotoluene (DANT). Diaminonitrotoluene is manufactured by a reduction reaction of trinitrotoluene (TNT), which is spent ammunition, and has the advantage of securing original technology and price competitiveness for environmental regulations due to the use of spent ammunition.

If the content of the above-mentioned hardener is less than 0.1 parts by weight, the above-mentioned effect is minimal, and if the content of the above-mentioned hardener exceeds 2 parts by weight, the above-mentioned effect is not significantly improved, but the curing speed may increase excessively or the polymer may harden, thereby reducing the coating effect.

The catalyst is contained in an amount of 0.001 to 0.01 parts by weight and serves to promote the polymerization reaction of the water-soluble polyurethane and the water-soluble silicone, thereby shortening the manufacturing time of the polymer. The component of the catalyst is not particularly limited and any component can be used as long as it promotes the polymerization reaction of the water-soluble polyurethane and the water-soluble silicone, thereby shortening the manufacturing time of the polymer. However, it is preferable to use dibutyltin dilaurate, which is a tin catalyst.

If the content of the above catalyst is less than 0.001 part by weight, the above effect is minimal, and if the content of the above catalyst exceeds 0.01 part by weight, the above effect is not significantly improved, but the manufacturing cost increases.

The above antibacterial and antifungal agent is contained in an amount of 0.1 to 5 parts by weight and has the function of imparting not only antibacterial and antifungal effects but also a deodorizing effect to a polymer coated on the fabric. It is preferably composed of at least one selected from the group consisting of diidomethyl-p-tolylsulfone, 2,4,5,6-tetrachloroisophthalonitrile, 2-(thiocyanato methylthio)benzothiazole, tebuconazole, N-butyl-1,2-benzylisothiazolin-3-one, dodecyl guanidine hydrochloride, and zinc pyrithione, and it is more preferably composed of 100 parts by weight of diidomethyl-p-tolylsulfone, 50 to 100 parts by weight of 2,4,5,6-tetrachloroisophthalonitrile, and 20 to 40 parts by weight of 2-(thiocyanato methylthio)benzothiazole.

The antibacterial and antifungal agent composed of the above ingredients exhibits not only antibacterial but also fungicide effects, and by inhibiting the growth of microorganisms, it not only suppresses the occurrence of unpleasant odors in fabrics, but also plays a role in generating a certain deodorizing effect.

If the content of the above antibacterial and antifungal agent is less than 0.1 parts by weight, the above effect is minimal, and if the content of the above antibacterial and antifungal agent exceeds 5 parts by weight, the above effect is not significantly improved, but the content of the polymer is relatively excessively reduced, which may deteriorate physical properties such as the coating effect and durability when washed.

At this time, in the polymerization manufacturing step (S101), 0.1 to 20 parts by weight of an additive may be additionally contained relative to 100 parts by weight of the water-soluble polyurethane, and it is preferable that the additive is composed of at least one selected from the group consisting of a flame retardant, a water repellent, and an ultraviolet ray blocking agent.

The flame retardant is contained in an amount of 10 to 20 parts by weight and is composed of a phosphorus flame retardant, and is selected from the group consisting of melamine phosphate, melamine polyphosphate, ammonium phosphate, ammonium polyphosphate, red phosphorus, tris(2-chloroethyl)phosphate, tris(1-chloro-2-propyl)phosphate, isopropylphenyl diphenyl phosphate, triphenyl phosphate, triethyl phosphate, resorcinol diphosphate, tricresyl phosphate, dimethyl methyl phosphonate, diethyl ethyl phosphonate, dimethyl propyl phosphonate, diethyl N,N-bis(2-hydroxyethyl)aminomethyl phosphonate, methyl(5-methyl-2-methyl-1,3,2-dioxaphosphorinan-5-yl) methyl ester P,P'-dioxide, phosphonic acid, It is preferably composed of at least one selected from the group consisting of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), poly(1,3-phenylenemethylphosphonate), hexaphenoxytricyclophosphazene, phosphophenanthrene, and nitrilotris(methylphosphonamic acid).

If the content of the flame retardant is less than 10 parts by weight, the flame retardancy-providing effect is minimal, and if the content of the flame retardant exceeds 20 parts by weight, the effect is not significantly improved, but the coating properties, adhesive properties, and durability after washing of the polymer coated on the fabric deteriorate, which is not preferable.

In addition, the water repellent may be contained in an amount of 0.1 to 5 parts by weight, and it is preferable to use an environmentally friendly water repellent. A water repellent made of a solution hybrid-synthesized from pure inorganic materials that do not contain fluorine may be used, and it is more preferable to use a C0-based water repellent. At this time, examples of C0-based water repellents that do not contain fluorine include Daedong's 1530A, Ciba's RHP-500, Daeyoung's NF-G2, and Rudolph's EC.

If the content of the water-repellent agent is less than 0.1 parts by weight, the water-repellent effect is minimal, and if the content of the water-repellent agent exceeds 5 parts by weight, the effect is not significantly improved, but the coating properties, adhesive properties, and durability after washing deteriorate, which is not preferable.

In addition, it is preferable that the ultraviolet ray blocker is contained in an amount of 0.1 to 1 part by weight and is composed of at least one selected from the group consisting of titanium dioxide and zinc oxide. If the content of the ultraviolet ray blocker is less than 0.1 part by weight, the effect of imparting ultraviolet ray blocking performance is minimal, and if the content of the ultraviolet ray blocker exceeds 1 part by weight, the effect is not significantly improved, but the manufacturing cost is excessively increased and the coating property and depositability of the polymer are lowered, which is not preferable.

The above silicate film formation step (S101-1) is a step of forming a silicate film on the surface of the fabric, and is comprised of a process of forming a silicate film having a thickness of 30 to 50 angstroms and an average surface roughness Ra of 10 to 200 nm on the surface of the fabric.

When a silicate film having the above thickness and average surface roughness is formed on the surface of the fabric as described above, the polymer manufactured through the polymer manufacturing step (S101) is firmly fixed to the surface of the fabric, so that durability such as wash fastness can be improved.

At this time, the silicate film can be formed by a process of mixing a silane component with a combustible gas (propane gas) in a burner and spraying it onto the surface of the fabric to coat it, as shown in Fig. 6 below. More specifically, a burner having a width of 180 to 220 mm is used, the air intake amount is 180 to 220 L per minute, the combustible gas (propane) injection amount is 8 to 12 L per minute, and the speed of run is 90 to 110 mm per second, and it is preferable to spray silicate having a mass concentration of 0.15 to 0.25%. The thickness of the coating film can be controlled by the concentration of silane, the amount of air, the amount of gas, etc., and can be adjusted and optimized according to the thickness and density of the fabric. If the adhesion of the silicate film needs to be increased, this can be achieved by reducing the amount of gas and increasing the concentration of silane. In the case of temperature-sensitive fabrics, a function can be imparted by reducing the amount of gas.

The process of forming a silicate film on the surface of the fabric through the above process is shown in Reaction Scheme 1 below.

<Reaction Formula 1>

As shown in the above reaction scheme 1, the silicate film formed on the surface of the fabric through the silicate film forming step (S101) of the present invention not only improves the physical adhesiveness with the polymer due to its own roughness, etc., but also plays a role in allowing the polymer to be firmly attached to the surface of the fabric through chemical bonding with the polymer by forming a large number of OH functional groups.

The above coating curing step (S103) is a step of coating and curing the polymer manufactured through the polymer manufacturing step (S101) on the surface of the fabric on which the silicate film is formed through the silicate film forming step (S103), and the polymer manufactured through the polymer manufacturing step (S101) is applied at 1 to 10 g/ ^m2 on the surface of the fabric on which the silicate film is formed. It is preferable that the process be carried out by coating and curing at a temperature of 60 to 110°C for 3 to 20 minutes.

If the polymer coating amount in the above coating curing step (S103) is less than 1 g/ ^m2 , the antibacterial and deodorizing effects of the fabric are minimal and the durability when washed may be reduced. If the polymer coating amount exceeds 10 g/ ^m2 , the antibacterial, deodorizing, and durability when washed effects of the fabric are not significantly improved, while the breathability and other effects may be excessively reduced, which is not desirable.

In addition, if the curing temperature is less than 60°C or the curing time is less than 3 minutes in the coating curing step (S103), the curing of the polymer coated on the surface of the fabric may not proceed completely, which may deteriorate durability such as color fastness to washing. In addition, if the curing temperature exceeds 110°C or the curing time exceeds 20 minutes, a high temperature higher than the temperature required for curing is applied for an excessively long time, and the curing efficiency of the polymer coated on the fabric is no longer improved while the physical properties of the polymer coated on the fabric deteriorate, which is not desirable in terms of energy efficiency.

At this time, most fabrics made of natural fibers or synthetic fibers can be applied, and natural fibers that can be used in the present invention include, for example, silk, cotton, wool, flax, fur, hair, cellulose, mahwang, hemp, linen, wood pulp, and combinations thereof.

Additionally, inorganic fibers may be used as natural fibers, which may include, for example, glass fibers, boron fibers and rock wool.

Additionally, synthetic fibers that can be used in the present invention can be derived from materials including, for example, polyolefins such as polyethylene, polyethylene terephthalate, polypropylene, and polybutylene; halogenated polymers such as polyvinyl chloride; polyaramids such as poly-p-phenylene terephthalamide (e.g., ^Kevlar® fibers available from DuPont), poly-m-phenylene terephthalamide (e.g., ^Nomex® fibers available from DuPont); melamine and melamine derivatives (e.g., ^Basofil® fibers available from Basofil Fibers, LLC); polyesters such as polyethylene terephthalate, polyesters/polyethers; polyamides such as nylon 6 and nylon 6,6; polyurethanes such as ^Tecophilic® aliphatic thermoplastic polyurethane available from Noveon; acetates; rayon acrylics; and combinations thereof.

Additionally, in one embodiment of the present invention, the fabric can comprise 100 wt%; or ≤ 75 wt%; or ≤ 50 wt%; or ≤ 40 wt%; or ≤ 30 wt%; or ≤ 20 wt%; or ≤ 10 wt%; or ≤ 5 wt% of the fiber or multicomponent fiber of the present invention. In some aspects of these embodiments, the at least one additional fiber can comprise cotton, wool, polyester, acrylic, nylon, silk, and combinations and blends thereof.

The method for manufacturing a coated fabric by the above process improves the adhesion of the polymer and the functional material to the fabric, thereby improving durability such as wash fastness, and can be applied to fabrics with low adhesion.

In addition, the coated fabric manufactured through the above process exhibits an excellent coating effect on all fabrics made of natural or synthetic fibers, and while maintaining the original texture of the fabric, exhibits breathability, hygroscopicity, and excellent durability when washed. Since these characteristics cannot be implemented in the characteristics of breathable or hygroscopic clothing using the existing general coating method, it was naturally recognized that they could not be applied to various existing clothing or daily necessities and were applied to special fields of industrial use. The present invention is a groundbreaking coating method that has overcome these limitations and has been reversed domestically and internationally.

This coating method is a water-soluble polyurethane silane inorganic hybrid polymer that is harmless to the human body and is an environmentally friendly substance. It is a mixture of anti-fungal, anti-bacterial, deodorizing, flame-retardant, ultraviolet-blocking, and water-repellent substance that is recommended domestically and internationally. This coating method can also achieve the effect of reducing carbon emissions in an environmentally friendly manner.

In addition, since it can be applied to natural or synthetic fabric materials to express properties such as antifungal, antibacterial, deodorizing, flame retardant, UV blocking, and water repellent properties in general, its demand and usability are very high not only domestically but also worldwide, and it can become a new avenue for the textile industry.

In addition, the antifungal, antibacterial, deodorizing and durable coated fabric manufactured through the above process can be used in a wide range of various fabrics and textile products, and the textile product is provided to include the fabric of the present invention. In some aspects of these embodiments, the textile product is selected from clothing, clothing padding, upholstery, carpets, padding, lining, wallpaper, roofing products, house wrap, insulation, bedding, wiping cloth, towels, gloves, rugs, floor mats, draperies, naperie, bar runners, textile bags, awnings, car covers, boat covers, tents, agricultural covers, geotextiles, automotive headliners, filters, envelopes, tags, labels, diapers, feminine hygiene products (e.g., sanitary napkins, tampons), laundry preparations (e.g., textile dryer sheets), wound care products and medical care products (e.g., sterilization wraps, caps, gowns, masks, draping).

In some embodiments of the present invention, a filter medium is provided comprising the multicomponent fibers of the present invention. In some aspects of these embodiments, the multicomponent fibers have a cross-section selected from a pie wedge shape, a hollow pie wedge shape, and a sea-island shape. In some aspects of these embodiments, the filter medium can be used for air filtration. In some aspects of these embodiments, the filter medium can be used for water filtration.

The fibers and multicomponent fibers of the present invention can be manufactured using any known fiber forming technology suitable for use with them. Some of the most common fiber forming technologies include extrusion, meltblowing, wet spinning, and dry spinning. In each of these processes, the fiber raw material is softened to a flowable state and forced through a die and/or spinneret to form a basic fiber, which is then typically mechanically manipulated to form the desired fiber product or multicomponent fiber product. For example, the basic fiber may be drawn. In a typical extrusion operation, the component polymer composition is first melted and then forced through a die and/or spinneret to form a basic fiber, which is then mechanically manipulated before cooling to form the desired fiber product of multicomponent fiber. In a typical meltblowing operation, the component polymer composition containing a thermoplastic material is first melted and then blown through a die and/or spinneret to form a basic fiber, which is then cooled to provide a fiber product. In a typical wet spinning operation, a solution of the component polymer composition(s) and a solvent may be forced through a die and/or spinneret to form base fibers, which may then be passed through a coagulating bath (e.g., a solution of sodium sulfate in water) to provide a fibrous product. In a typical dry spinning operation, a solution of the component polymer composition(s) and a solvent is forced through a die and/or spinneret into the air to form solid fibers. The fibers formed by these methods may or may not be recovered on a surface such as a belt to form a nonwoven web, or may otherwise be subjected to controlled chemical or mechanical treatments to change or improve their physical or chemical properties.

In addition, as products using the coated fabric with improved antifungal, antibacterial, deodorizing and durability of the present invention, for example, absorbent articles such as diapers, napkins and incontinence pads; medical hygiene products such as gowns and scrubs; interior decoration materials such as wallpaper, Japanese sliding paper and flooring; living materials such as cover cloths and covers for food waste containers; toilet-related products such as disposable toilet products and toilet seat covers; pet products such as pet sheets, pet diapers and pet towels; general medical products; bedding materials; filter materials; nursing products, etc., can be utilized in various products requiring antibacterial and deodorizing functions.

Hereinafter, a method for manufacturing a coated fabric with improved antifungal, antibacterial, deodorizing and durability properties according to the present invention and the properties of a coated fabric manufactured by the manufacturing method will be described with examples.

<Manufacturing Example 1> Manufacturing of antibacterial and antifungal agent

An antibacterial and antifungal agent was prepared by mixing 100 parts by weight of diisomethyl-p-tolylsulfone, 80 parts by weight of 2,4,5,6-tetrachloroisophthalonitrile, and 30 parts by weight of 2-(thiocyanato methylthio)benzothiazole.

<Manufacturing Example 2> Manufacturing of fabric with silicate film formed

A silane component (mass concentration of 0.2%) was injected onto the surface of a fabric (plain weave using polyethylene terephthalate yarns in warp and weft rolls) using a burner with an injection width of 200 mm, at a flow rate of 200 L of air per minute, a flow rate of combustible gas (propane) of 10 L per minute, and a speed of run of 100 mm per second, thereby manufacturing a fabric on which a silicate film (thickness of 30 to 50 angstroms and an average surface roughness Ra of 10 to 200 nm) was formed.

<Example 1>

100 parts by weight of water-soluble polyurethane, 5 parts by weight of water-soluble silicone, 1 part by weight of a curing agent (diaminonitrotoluene), 0.005 parts by weight of a catalyst (dibutyltin dilaurate), and 2.5 parts by weight of the antibacterial and antifungal agent prepared through Manufacturing Example 1 were mixed and reacted to prepare a polymer, and the prepared polymer was coated at 5 g/ ^m2 on the surface of a fabric on which a silicate film was formed through Manufacturing Example 2, and then cured at a temperature of 90°C for 10 minutes to prepare a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Example 2>

The same procedure as in Example 1 was followed, but 0.1 weight part of the antibacterial and antifungal agent manufactured through Manufacturing Example 1 was mixed to manufacture a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Example 3>

The same procedure as in Example 1 was followed, but 5 parts by weight of the antibacterial and antifungal agent manufactured through Manufacturing Example 1 was mixed to manufacture a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Example 4>

The same procedure as in Example 1 was followed, but 15 parts by weight of a flame retardant {tris(2-chloroethyl)phosphate} was further mixed relative to 100 parts by weight of water-soluble polyurethane contained in the polymer, thereby producing a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Example 5>

The same procedure as in Example 1 was followed, but 10 parts by weight of a flame retardant {tris(2-chloroethyl)phosphate} was further mixed relative to 100 parts by weight of water-soluble polyurethane contained in the polymer, thereby producing a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Example 6>

The same procedure as in Example 1 was followed, but 20 parts by weight of a flame retardant {tris(2-chloroethyl)phosphate} was further mixed relative to 100 parts by weight of water-soluble polyurethane contained in the polymer, thereby producing a coated fabric with improved antifungal, antibacterial, deodorizing, and durability properties.

<Comparative Example 1>

The fabric was manufactured through a process of weaving polyethylene terephthalate yarns in a plain weave using warp and weft rolls.

<Comparative Example 2>

The same procedure as in Example 1 was followed, but 0.05 weight part of the antibacterial and antifungal agent prepared in Manufacturing Example 1 was mixed to prepare a coated fabric.

The antibacterial properties of the coated fabrics manufactured through the above Examples 1 to 3 were measured and are shown in Table 1 below.

{However, the two types of bacteria used to measure antibacterial activity were Staphylococcus aureus and Klebsiella , and the test was conducted according to KSK 0693-2001.

Meanwhile, Staphylococcus aureus was preserved under the ATCC 6538p preservation number, and Streptococcus pneumoniae was preserved under the ATCC 4352 preservation number. The inoculum concentration for both strains was 1.0×10 ⁵ cells/ml. At this time, the nonionic surfactant used to disperse the strains was Tween 80 (0.05%).

<Table 1>

As shown in Table 1 above, it can be seen that the coated fabrics manufactured through Examples 1 to 3 of the present invention exhibit superior antibacterial performance compared to Comparative Examples 1 to 2.

In particular, it can be seen that when 5 parts by weight of an antibacterial and antifungal agent is contained as in Example 3, a bactericidal reduction rate of 99.99% is shown for Staphylococcus aureus and Streptococcus pneumoniae.

In addition, the antibacterial performance of the fabric manufactured through Example 1 after washing was measured by KOTITI, and as a result, the coated fabric with improved antifungal, antibacterial, deodorizing, and durability manufactured through Example 1 of the present invention exhibited excellent antibacterial properties even after 50 washes, indicating that it not only had excellent antibacterial properties but also had excellent durability after washing.

In addition, the flame retardancy of the fabrics manufactured through Example 1, Examples 4 to 6 and Comparative Example 1 was measured and shown in Table 2 below.

{However, flame retardancy was measured according to KS K 0583.}

<Table 2>

As shown in Table 2 above, it can be seen that the coated fabrics manufactured through Examples 1 and 4 to 6 of the present invention exhibit superior flame retardancy performance compared to the fabric of Comparative Example 1, and in particular, it can be seen that the flame retardancy of the coated fabrics of Examples 4 to 6 containing a flame retardant is even more superior.

In addition, the deodorizing properties of the fabrics manufactured through Examples 1 to 6 and Comparative Example 1 were measured and shown in Table 3 below.

{However, the deodorizing ability was measured using the gas detection tube method, and the test was conducted under the conditions of a sample size of 10×10cm, an amount of 1㎕ of injected ammonia aqueous solution, and a container volume of 500㎖, and the deodorizing rate was calculated according to the following formula.

Deodorization rate (%) = [Concentration of blank gas (㎍/g) - Concentration of sample gas (㎍/g)]/Concentration of blank gas (㎍/g) × 100}

<Table 3>

As shown in Table 3 above, it can be seen that the coated fabrics manufactured in Examples 1 to 6 of the present invention have excellent deodorizing rates over time. However, as the content of the flame retardant increases, the content of the antibacterial and antifungal agent relatively decreases, so it can be seen that the deodorizing effect of Examples 4 to 6 is somewhat reduced compared to Examples 1 to 3 that do not contain a flame retardant.

Therefore, the method for manufacturing a coated fabric with improved antifungal, antibacterial, deodorizing and durability according to the present invention exhibits an excellent coating effect on all fabrics made of natural fibers or synthetic fibers, and provides a coated fabric that is excellent in breathability, hygroscopicity, antibacterial and deodorizing properties, as well as excellent durability when washed. In addition, the method further provides a coated fabric with flame retardancy, water repellency and ultraviolet ray blocking properties by containing an additive comprising at least one selected from the group consisting of a flame retardant, a water repellent and an ultraviolet ray blocking agent.

S101; Polymer production step, S101-1; Silicate film formation step
S103; Coating curing stage

Claims (1)

A polymer preparation step of mixing and reacting 100 parts by weight of water-soluble polyurethane, 1 to 10 parts by weight of water-soluble silicone, 0.1 to 2 parts by weight of a curing agent, 0.1 to 1 part by weight of a UV blocking agent, 0.001 to 0.01 parts by weight of a catalyst, and 0.1 to 5 parts by weight of an antibacterial and antifungal agent to prepare a polymer;
A silicate film forming step for forming a silicate film on the surface of the fabric; and
It consists of a coating curing step of coating and curing the polymer manufactured through the above polymer manufacturing step on the surface of the fabric on which the silicate film is formed through the silicate film forming step;
The above UV blocking agent is characterized by being at least one selected from the group consisting of titanium dioxide and zinc oxide.
A method for manufacturing a coated fabric having improved ultraviolet ray blocking properties.