KR102790398B1 - Fabrics that provide ventilation and cooling through improved texture, and manufacturing method thereof - Google Patents

Abstract

A fabric providing ventilation and a cooling sensation through improved texture and a method for manufacturing the same are disclosed. In one embodiment, a method for manufacturing a fabric providing ventilation and a cooling sensation through improved texture comprises: (A) a step of preparing raw materials of yarn and a functional material; (B) a step of manufacturing a fabric using the raw materials and the functional material; and (C) a step of post-processing the fabric.

Description

FABRICS THAT PROVIDE VENTILATION AND COOLING THROUGH IMPROVED TEXTURE, AND MANUFACTURING METHOD THEREOF

The present invention relates to a fabric that provides ventilation and a cool feeling through improved texture and a method for manufacturing the same. More specifically, the present invention relates to a functional fabric that has various functions such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing by introducing various functional materials, and can provide ventilation and a cool feeling by improving the texture and breathability of the fabric and a method for manufacturing the same.

Conventional textile fabrics were mainly manufactured from a single material and had limited functions. For example, cotton fabrics have good breathability and moisture absorption but have low durability, and polyester fabrics have good strength and durability but have poor moisture absorption and breathability. Accordingly, attempts have been made to supplement the functions of fabrics by mixing various materials or performing special processing.

Recently, as the wellness culture spreads, the demand for functional textile products with functions such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing is increasing. Accordingly, technologies for introducing various functional materials such as antibacterial agents, silver nanoparticles, and phase change materials (PCMs) into textile fabrics have been developed. However, these existing technologies can only provide a single function, or even if multiple functional materials are introduced, it is difficult to distribute them evenly within the fabric structure, so the functional expression is limited.

Accordingly, the present invention aims to provide a functional fabric having multiple functions such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing by uniformly introducing various functional materials, and having excellent ventilation by forming a large number of pores on the surface of the fabric, and a method for manufacturing the same.

Korean Patent Registration No. 10-2650265 Korean Patent Registration No. 10-1689369 Korean Patent Publication No. 10-2021-0158117 Korean Patent Registration No. 10-2272066

The purpose of the present invention is to provide a functional fabric having multiple functions such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing, rather than a single function. To this end, a method is required that can uniformly and stably introduce various functional materials such as cooling additives, antibacterial/deodorizing substances, temperature control substances, self-cleaning substances, and self-healing substances into the fabric.

In addition, the present invention aims to minimize the deterioration of fabric properties due to the introduction of functional materials. The introduction of functional materials has generally caused problems in reducing mechanical properties such as fabric strength and durability. The present invention aims to minimize the deterioration of fabric properties by using high-strength yarns, introducing shape memory polymers, and applying optimal process conditions.

In addition, the present invention aims to provide a next-generation functional fabric and a method for manufacturing the same in which various functional materials are evenly distributed to exhibit composite functions, a uniform porous structure is formed on the surface of the fabric to improve ventilation, and deterioration of mechanical properties is minimized.

The present invention relates to a method for manufacturing a fabric that provides ventilation and a cooling sensation through improved texture, comprising: (A) a step of preparing raw materials of yarn and a functional material; (B) a step of manufacturing a fabric using the raw materials and the functional material; and (C) a step of post-processing the fabric.

At this time, the step (B) includes: (B1) a step of manufacturing yarn using the raw material and introducing the primary functional material into the yarn; (B2) a step of refining the yarn and preparing for weaving; (B3) a step of manufacturing a fabric by performing double knitting using the yarn and introducing a secondary functional material into the fabric; and the step (C) includes: (C1) a step of dyeing the fabric and performing post-processing; (C2) a step of inspecting the quality of the fabric and evaluating its performance.

In addition, at this time, the raw material comprises: 45 to 55 parts by weight of cotton yarn; 39 to 47 parts by weight of polyester chips; 1 to 3 parts by weight of a cooling additive; 2.9 to 6.5 parts by weight of spandex chips; and 0.1 to 0.5 parts by weight of a shape memory polyurethane; wherein the cooling additive comprises: 1.5 to 2 parts by weight of zeolite; and 0.5 to 1 part by weight of silicon carbide; and wherein the shape memory polyurethane has a transition temperature of 23 to 27° C. and comprises: 0.04 to 0.18 parts by weight of polytetramethylene ether glycol (PTMEG); 0.04 to 0.18 parts by weight of poly(ε-caprolactone) (PCL); 0.015 to 0.09 parts by weight of 4,4'-methylenebis(phenylisocyanate) (MDI); And 0.005 to 0.05 parts by weight of 1,4-butanediol (BDO); wherein the functional material comprises: 0.7 to 1.8 parts by weight of an antibacterial and deodorizing material; 3 to 7 parts by weight of a temperature control material; 2 to 5 parts by weight of a self-cleaning material; and 1 to 4 parts by weight of a self-healing material; wherein the antibacterial and deodorizing material comprises: 0.3 to 0.7 parts by weight of a green tea extract; 0.3 to 0.7 parts by weight of chitosan; 0.05 to 0.2 parts by weight of silver nanoparticles; and 0.05 to 0.2 parts by weight of copper ions; wherein the temperature control material is an n-octadecane phase change material (PCM) microcapsule having an average particle size of 5 to 20 μm, and comprises: 2.5 to 5.5 parts by weight of n-octadecane; 0.47 to 1.35 parts by weight of a melamine formaldehyde resin; And 0.03 to 0.15 parts by weight of a surfactant; wherein the self-cleaning material comprises: 0.7 to 2 parts by weight of nano titanium dioxide having an average particle diameter of 10 to 20 nm and an anatase crystal phase; and 1.3 to 3 parts by weight of a fluorinated water-repellent agent having a water-repelling angle of 140˚ or more; wherein the self-healing material is a microcapsule having an average diameter of 10 to 30 μm and comprises 0.7 to 3 parts by weight of dicyclopentadiene; and 0.3 to 1 part by weight of a ruthenium catalyst.

In addition, at this time, the step (B1) includes: (B11) a step of manufacturing a polyester cooling yarn using the raw material; (B12) a step of manufacturing a functional cotton yarn using the raw material and the functional material; (B13) a step of manufacturing a spandex yarn with a shape memory function using the raw material; (B14) a step of introducing a self-healing material into the functional cotton yarn and the polyester cooling yarn; and the step (B11) includes: (B111) a step of drying and dehydrating the polyester chips and the cooling additive at 70 to 80°C for 4 to 6 hours; (B112) a step of melt-extruding the dried and dehydrated mixture through a double screw extruder at conditions of 280 to 295°C and 30 to 50 bar while injecting an inert gas (N ₂ ) at 0.5 to 1.0 L/min to induce dispersion of the cooling additive. (B113) a step of cooling the extruded molten yarn with an air or water-cooled chip chiller at a temperature range of 150 to 180°C; (B114) a step of drawing the cooled undrawn yarn at a draw ratio of 3.0 to 4.5 times at 280 to 320°C to improve the tensile strength; (B115) a step of heat-setting the drawn yarn with improved tensile strength at 270 to 290°C for 20 to 40 seconds and then processing the winding and packaging processes; wherein the step (B12) comprises: (B121) a step of mixing the antibacterial and deodorizing material, the temperature control material, and the self-cleaning material to prepare a dispersion; (B122) a step of immersing the cotton yarn in the dispersion at 40 to 60°C for 5 to 10 minutes; (B123) a step of introducing the functional material, the dispersion, into the cotton yarn under a pressure of 0.6 to 0.9 bar for 10 to 20 minutes in a vacuum padding machine; (B124) a step of drying in a tufter dryer at 90 to 110°C for 3 to 5 hours and then heat-treating at 120 to 150°C for 10 to 30 minutes; wherein the step (B13) comprises: (B131) a step of drying and dehydrating the spandex chips and the shape memory polyurethane at 90 to 110°C for 6 to 10 hours; (B132) a step of producing a shape memory spandex raw material by melt extrusion at 260 to 280°C and 80 to 120 bar; (B133) a step of spinning the spandex raw material at a nozzle temperature of 240 to 260°C at a spinning speed of 0.3 to 0.6 g/min to produce an undrawn yarn; (B134) a step of tensile stretching the undrawn yarn at a draw ratio of 3.5 to 5.0 times at 180 to 220°C and heat-setting it at 200 to 240°C for 30 to 60 seconds; wherein the step (B14) comprises: (B141) a step of producing the dicyclopentadiene and the ruthenium catalyst into microcapsules having an average particle size of 10 to 30 μm by an interfacial polymerization method; (B142) a step of mixing the microencapsulated dicyclopentadiene and the ruthenium catalyst with the self-healing material; (B143) a step of performing a padding process for the self-healing material on the cotton yarn and the polyester cool-touch yarn at 90 to 110°C and 0.5 to 0.8 bar for 5 to 15 minutes; (B144) a step of fixing the self-healing material to the yarn by drying and heat-treating at 120 to 150°C for 30 to 60 minutes; and the step (B2) comprises: (B21) a step of refining the polyester cool-touch yarn; (B22) a step of refining the functional cotton yarn; (B23) a step of heat-treating and doping the spandex yarn; (B24) a step of preparing and warping the refined polyester cool-touch yarn, the functional cotton yarn and the spandex yarn; wherein the step (B21) comprises: (B211) a step of heat-setting the polyester cool-touch yarn in a heat treatment oven at 190 to 210°C for 30 to 60 seconds; (B212) a step of immersing the heat-treated polyester cool-touch yarn in a refining solution (containing hydrogen peroxide) at 120 to 150°C for 45 to 90 minutes; (B213) a step of refining the immersed polyester cool-touch yarn in a steam refiner under the conditions of 120 to 140°C and 1.5 to 2.5 bar for 30 to 60 minutes; (B214) a step of washing and hot water washing the refined polyester cool-touch yarn to remove residual impurities and drying it at 60 to 80°C for 20 to 40 minutes; (B215) a step of applying silicone oil at a concentration of 10 to 20 g/L to the dried polyester cool-touch yarn; wherein the step (B22) comprises: (B221) a step of immersing the functional cotton yarn in a 10 to 20 g/L basic NaOH scouring solution at 60 to 80°C for 30 to 60 minutes; (B222) a step of additionally refining it in a 2 to 5 g/L acidic sodium sulfite scouring solution at 70 to 90°C for 30 to 60 minutes; (B223) a step of removing residual scouring agent from the functional cotton yarn that has been alkaline and acid-refined through a filtering and washing process and drying it at 60 to 80°C for 60 to 90 minutes; (B224) a step of improving whiteness by treating with 1 to 3 g/L oxalic acid at a concentration of 60 to 80°C for 20 to 40 minutes after the drying; wherein the step (B23) comprises: (B231) a step of heat-setting the spandex yarn in a heat treatment device at 180 to 230°C for 30 to 90 seconds; (B232) a step of immersing the heat-set spandex yarn in an emulsion solution at 80 to 100°C composed of 50 to 80 g/L silicone oil and 2 to 5 g/L emulsion stabilizer for 10 to 30 minutes; (B233) a step of completing the doping process by drying in a dryer at 60 to 80°C for 20 to 40 minutes after the emulsion treatment; and the step (B24) comprises: (B241) a step of passing the refined polyester cool-touch yarn, the functional cotton yarn, and the spandex yarn through a warping machine with a warping density of 240 to 360 den/inch and a yarn tension of 15 to 25 gf to warp; (B242) a step of distinguishing the warped polyester cool-touch yarn and the spandex yarn into warp yarns and the functional cotton yarn into weft yarns; (B243) a step of imparting a yarn twist of 300 to 500 T/m to the warp yarn and the weft yarns to increase the strength; (B244) a step of maturing for 24 to 48 hours under conditions of 10 to 30°C in the afternoon and 35 to 45% humidity after the above yarn twisting; and the step (B3) comprises: (B31) a step of manufacturing a fabric by performing a double knitting process using the polyester cool-touch yarn, the functional cotton yarn, and the spandex yarn separated into the warp and weft yarns; (B32) a step of applying the self-cleaning material to the fabric; (B33) a step of applying the self-healing material after applying the self-cleaning material; (B34) a step of applying the antibacterial and deodorizing material and the temperature control material after applying the self-healing material; and the step (B31) comprises: (B311) using a warp knitting machine under warp knitting conditions of a knitting machine gauge of 18 to 24, a cylinder rotation speed of 180 to 250 rpm, a knitting density (course) of 16 to 22 courses/inch, a loop length of 4.5 to 6 mm, a yarn tension of 30 to 50 gf, a knitting temperature of 24 to 30°C, and a relative humidity of 55 to 65%, and a weft knitting condition of a knitting machine gauge of 20 to 28, a needle rotation speed of 350 to 450 rpm, a knitting density (course) of 16 to 24 courses/inch, a loop length of 3 to 4.5 mm, a yarn supply tension of 15 to 25 gf, a knitting temperature of 22 to 28°C, and a relative humidity of 50 to 65%. A step of manufacturing a fabric by using a double wrap knitting technique to uniformly vertically insert the functional cotton yarn as the weft yarn into the uneven surface layer of the warp yarn by double knitting the polyester cool-touch yarn and the above spandex yarn and the above functional cotton yarn as the weft yarn; wherein the step (B32) comprises: (B321) a step of padding the double knitted fabric with a dispersion of nano titanium dioxide (10 to 30 g/L) at a temperature of 25 to 40°C and a pressure of 1 to 3 bar for 3 to 10 minutes; (B322) a step of drying at 120 to 150°C for 2 to 5 minutes after the padding treatment; (B323) a step of applying the fluorine-based water-repellent by spray coating or electrospinning coating after drying; wherein the step (B33) comprises: (B331) a step of introducing the self-healing material through a padding process at a temperature of 60 to 80°C and a pressure of 0.5 to 1.5 bar for 10 to 30 minutes after applying the fluorine-based water-repellent; (B332) a step of fixing the self-healing material by drying and heat-treating at 120 to 150°C for 30 to 60 minutes after introducing the self-healing material; wherein the step (B34) comprises: (B341) a step of padding a dispersion of the antibacterial and deodorizing material to impart an antibacterial and deodorizing function; (B342) a step of padding or coating the temperature control material to impart a temperature control function; (B343) A step of heat-setting at 140 to 180°C for 1 to 3 minutes; wherein the step (C1) comprises: (C11) a step of putting the knitted fabric into a liquid dyeing machine at a temperature of 60 to 130°C for 30 minutes to 4 hours and dyeing it; (C12) a step of putting the dyed fabric into a dryer and drying it at 105 to 180°C for 2 to 6 minutes; (C13) a step of putting the dried fabric into a tenter and heat-setting it at a temperature range of 180 to 220°C for 30 seconds to 2 minutes while maintaining the fabric width in an excess width state of about 1 to 5% to simultaneously perform width stabilization; (C14) a step of activating the spandex yarn portion into which the shape memory polyurethane is introduced by heating at 185 to 195°C for 1 to 3 minutes while controlling the tensile strength of the fabric to a level of 1 to 3% to maximize the shape memory effect; (C15) a step of cooling the fabric at a temperature range of 70 to 90°C for 2 to 5 minutes while gradually controlling the cooling speed to minimize shrinkage and wrinkle occurrence of the fabric; (C16) a step of removing residual impurities and foreign substances on the surface of the fabric.

In addition, the present invention is manufactured by the above method into a fabric that provides ventilation and a cool feeling through improved texture.

A device according to one embodiment may be coupled with hardware and controlled by a computer program stored on a medium to execute any one of the methods described above.

The fabric of the present invention can simultaneously implement complex functions such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing by uniformly introducing various functional materials into the fabric.

In addition, the fabric of the present invention has excellent ventilation as air permeability is improved by uniformly forming a large number of pores on the surface of the fabric using a double knitting technique.

In addition, the fabric of the present invention has excellent mechanical properties by minimizing the deterioration of physical properties such as strength, elasticity, and durability through the use of high-strength yarn, introduction of shape-memory polymer, and optimal process conditions.

In addition, according to the manufacturing method of the present invention, an optimal introduction method is applied for each functional material, and precise position control is possible during double knitting, so that various functional materials can be stably and uniformly introduced into the fabric.

In addition, a cooling additive is introduced into the fabric of the present invention, so that a comfortable cooling sensation can be provided.

In addition, since the functional fabric of the present invention has the characteristics of various functions, excellent ventilation, good mechanical properties, providing a cool feeling, etc., it is expected to have high utilization in the fields of sportswear, working wear, outdoor wear, uniforms, etc.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, since various modifications may be made to the embodiments, the scope of the patent application rights is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, or substitutes to the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to specific disclosed forms, and the scope of the present disclosure includes modifications, equivalents, or alternatives included in the technical idea.

Although the terms first or second may be used to describe various components, such terms should be construed only for the purpose of distinguishing one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

When it is said that a component is "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but there may also be other components in between.

The terms used in the examples are for the purpose of description only and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood to not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiments belong. Terms defined in commonly used dictionaries, such as those defined in common dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and shall not be interpreted in an idealized or overly formal sense, unless expressly defined in this application.

The advantages and features of the present invention, and the method for achieving them, will become clear with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform a person having ordinary skill in the art to which the present invention belongs of the scope of the invention, and the present invention is defined only by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant technology, and shall not be interpreted in an ideal or overly formal meaning unless explicitly defined in the embodiments of the present invention.

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the matters illustrated. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When the terms “includes,” “has,” “consists of,” etc. are used in this specification, other parts may be added unless “only” is used. When a component is expressed in singular, it includes a case where the plural is included unless there is a specifically explicit description.

When interpreting a component, it is interpreted as including the error range even if there is no separate explicit description.

The size and thickness of each component shown in the drawings are illustrated for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

The individual features of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as can be fully understood by those skilled in the art, various technical connections and operations are possible, and each embodiment may be implemented independently of each other or may be implemented together in a related relationship.

The present invention relates to a method for manufacturing a fabric that provides ventilation and a cooling sensation through improved texture, comprising the steps of: (A) preparing raw materials of yarn and a functional material; (B) manufacturing a fabric using the raw materials and the functional material; and (C) post-processing the fabric.

The step of preparing the raw materials and functional materials of the yarn (A) above is the process of selecting and preparing the yarn to be used as the raw materials of the fabric and the functional materials to provide ventilation and cooling functions.

In the step of manufacturing a fabric using the above (B) raw materials and functional materials, the prepared yarn and functional materials are mixed to manufacture yarn, and the fabric is manufactured through processes such as weaving and knitting. The functional material may be contained within the yarn or coated on the surface of the yarn during the yarn manufacturing process.

In the step of post-processing the fabric above (C), a processing process is performed to improve the functionality of the fabric or to adjust its properties. For example, heat treatment, plasma treatment, etc. may be applied to the fabric to improve breathability, or a functional coating may be additionally applied to the surface of the fabric.

At this time, the step (B) is composed of a step (B1) of manufacturing yarn using the raw material and introducing the primary functional material into the yarn, a step (B2) of refining the yarn and preparing it for weaving, and a step (B3) of manufacturing a fabric by performing double knitting using the yarn and introducing a secondary functional material into the fabric.

The above step (C) consists of a step (C1) of dyeing the fabric and performing post-processing, and a step (C2) of inspecting the quality of the fabric and evaluating its performance.

In the above step (B1), functionality is imparted to the yarn itself by introducing a primary functional material that exhibits antibacterial and deodorizing functions together with the raw materials during yarn manufacturing.

In the above step (B2), the manufactured yarn is refined to adjust the twist and prepare for the weaving process, thereby optimizing the density and porosity of the fabric structure.

In the above step (B3), the fabric is manufactured through a double knitting process, and during this process, a secondary functional material that exhibits additional functions is introduced into the fabric. The double knitting process can provide different textures to the outside and inside of the fabric, thereby improving ventilation and cooling properties.

In the above step (C1), the manufactured fabric is dyed and various post-processing processes are performed to finalize the appearance and functionality of the fabric.

In the above step (C2), the quality of the final fabric product is inspected and its performance, such as ventilation and cooling, is evaluated, which is used for quality control and product improvement.

In addition, at this time, the raw material is composed of 45 to 55 parts by weight of cotton yarn, 39 to 47 parts by weight of polyester chips, 1 to 3 parts by weight of a cooling additive, 2.9 to 6.5 parts by weight of spandex chips, and 0.1 to 0.5 parts by weight of shape memory polyurethane.

The above cooling additive is composed of 1.5 to 2 parts by weight of zeolite and 0.5 to 1 part by weight of silicon carbide.

The above shape memory polyurethane has a transition temperature of 23 to 27°C and is composed of 0.04 to 0.18 parts by weight of polytetramethylene ether glycol (PTMEG), 0.04 to 0.18 parts by weight of poly(ε-caprolactone) (PCL), 0.015 to 0.09 parts by weight of 4,4'-methylenebis(phenylisocyanate) (MDI), and 0.005 to 0.05 parts by weight of 1,4-butanediol (BDO).

The above functional material is composed of 0.7 to 1.8 parts by weight of an antibacterial and deodorizing material, 3 to 7 parts by weight of a temperature regulating material, 2 to 5 parts by weight of a self-cleaning material, and 1 to 4 parts by weight of a self-healing material.

The above antibacterial and deodorizing substance is composed of 0.3 to 0.7 parts by weight of green tea extract, 0.3 to 0.7 parts by weight of chitosan, 0.05 to 0.2 parts by weight of silver nanoparticles, and 0.05 to 0.2 parts by weight of copper ions.

The above temperature control material is an n-octadecane phase change material (PCM) microcapsule having an average particle size of 5 to 20 μm, and is composed of 2.5 to 5.5 parts by weight of n-octadecane, 0.47 to 1.35 parts by weight of melamine formaldehyde resin, and 0.03 to 0.15 parts by weight of a surfactant.

The above self-cleaning material is composed of 0.7 to 2 parts by weight of nano titanium dioxide having an average particle size of 10 to 20 nm and an anatase crystal phase and 1.3 to 3 parts by weight of a fluorine-based water-repellent agent having a water-repelling angle of 140˚ or more.

The above self-healing material is a microcapsule having an average diameter of 10 to 30 μm and is composed of 0.7 to 3 parts by weight of dicyclopentadiene and 0.3 to 1 part by weight of a ruthenium catalyst.

First, let's look at the composition of the raw materials. The reason for using 45-55 weight parts of cotton yarn is to secure breathability and moisture absorption. Cotton yarn has excellent air permeability due to its porous fiber structure, and it is easy to absorb moisture due to its hydrophilicity, providing a comfortable wearing feeling. If excessive cotton yarn is used, the strength and durability of the fabric may decrease, so maintain an appropriate ratio.

The reason for using 39~47 weight parts of polyester chips is to provide appropriate strength and shape stability to the yarn. Polyester has a strong molecular structure, so it has excellent tensile strength and elasticity, and using polyester chips enables stable fiber formation during yarn manufacturing. However, if the polyester ratio is too high, the fabric may become stiff, so adjust it to an appropriate ratio.

The reason for using spandex chips of 2.9~6.5 weight parts is to provide elasticity and resilience to the fabric. Spandex has excellent stretchability and elastic resilience, which improves activity and wearability.

The reason for using 0.1~0.5 weight part of shape memory polyurethane is to provide shape fixation and wrinkle prevention effects to the fabric. Shape memory polyurethane has the characteristic of recovering its original shape when heated above the transition temperature, so it contributes to stabilizing the fabric dimensions in post-processing processes such as tentering.

Next, looking at the composition of the functional material, 1.5 to 2 parts by weight of zeolite and 0.5 to 1 part by weight of silicon carbide are used as cooling additives. Zeolite and silicon carbide are cooling additives. Zeolite has excellent heat absorption due to its porous structure, and silicon carbide has good heat generation due to its high thermal conductivity. If these are mixed in an appropriate ratio, they can work synergistically to maximize the cooling effect.

Antibacterial and deodorizing substances include 0.3 to 0.7 parts by weight of green tea extract, 0.3 to 0.7 parts by weight of chitosan, 0.05 to 0.2 parts by weight of silver nanoparticles, and 0.05 to 0.2 parts by weight of copper ions. Green tea extract and chitosan are natural extracts with excellent antibacterial properties and are harmless to the human body, while silver nanoparticles and copper ions have excellent antibacterial properties and persistence, thereby enhancing antibacterial and deodorizing functions.

The temperature control material used is 2.5 to 5.5 parts by weight of n-octadecane phase change material microcapsules, 0.47 to 1.35 parts by weight of melamine resin, and 0.03 to 0.15 parts by weight of surfactant. n-octadecane is a highly soluble material, and when it is microencapsulated by phase change, heat absorption/release within the fabric becomes easy, thereby providing a temperature control function. Melamine resin and surfactant are essential materials for manufacturing microcapsules.

As a self-cleaning material, 0.7 to 2 parts by weight of anatase crystal nano titanium dioxide with an average particle size of 10 to 20 nm and 1.3 to 3 parts by weight of a fluorine-based water-repellent agent with a water-repelling angle of 140 degrees or more are used. Nano titanium dioxide decomposes contaminants on the surface of the fabric through photocatalytic action, and the fluorine-based water-repellent agent imparts water-repelling properties to the surface of the fabric, thereby improving contamination prevention and cleaning efficiency.

As a self-healing material, 0.7 to 3 parts by weight of microencapsulated dicyclopentadiene with an average diameter of 10 to 30 μm and 0.3 to 1 part by weight of a ruthenium catalyst are used. Dicyclopentadiene has the property of forming a new polymer when liquefied by heat or mechanical stress, thereby healing cracks, etc., and the ruthenium catalyst accelerates this process.

In addition, at this time, the step (B1) is composed of a step (B11) of manufacturing polyester cool-feeling yarn using the raw material, a step (B12) of manufacturing functional cotton yarn using the raw material and the functional material, a step (B13) of manufacturing spandex yarn with a shape memory function using the raw material, and a step (B14) of introducing a self-healing material into the functional cotton yarn and the polyester cool-feeling yarn.

The above (B11) step comprises a step (B111) of drying and dehydrating the polyester chips and the cooling additive at 70 to 80°C for 4 to 6 hours, a step (B112) of melt-extruding the dried and dehydrated mixture through a double screw extruder under the conditions of 280 to 295°C and 30 to 50 bar while injecting an inert gas (N ₂ ) at 0.5 to 1.0 L/min to induce dispersion of the cooling additive, a step (B113) of cooling the extruded molten yarn with an air or water-cooled chip cooler in a temperature range of 150 to 180°C, a step (B114) of drawing the cooled undrawn yarn at a draw ratio of 3.0 to 4.5 times at 280 to 320°C to improve the tensile strength, and a step of heat-treating the drawn yarn with improved tensile strength at 270 to 290°C for 20 It consists of a step (B115) of processing the coiling and packaging process after heat fixation for ~40 seconds.

The above step (B12) is composed of a step (B121) of preparing a dispersion by mixing the antibacterial and deodorizing material, the temperature control material, and the self-cleaning material, a step (B122) of immersing the cotton yarn in the dispersion at 40 to 60°C for 5 to 10 minutes, a step (B123) of introducing the dispersion, which is a functional material, to the cotton yarn in a vacuum padding machine under a pressure of 0.6 to 0.9 bar for 10 to 20 minutes, and a step (B124) of drying in a tufter dryer at 90 to 110°C for 3 to 5 hours and then heat-treating at 120 to 150°C for 10 to 30 minutes.

The above step (B13) is composed of a step (B131) of drying and dehydrating the spandex chip and the shape memory polyurethane at 90 to 110°C for 6 to 10 hours, a step (B132) of producing a shape memory spandex raw material by melt extrusion at 260 to 280°C and 80 to 120 bar, a step (B133) of producing an undrawn yarn by spinning the spandex raw material at a nozzle temperature of 240 to 260°C at a spinning speed of 0.3 to 0.6 g/min, and a step (B134) of tensile stretching the undrawn yarn at 180 to 220°C at a stretch ratio of 3.5 to 5.0 times and heat-setting it at 200 to 240°C for 30 to 60 seconds.

The above step (B14) is composed of a step (B141) of manufacturing the dicyclopentadiene and the ruthenium catalyst into microcapsules having an average particle size of 10 to 30 μm by an interfacial polymerization method, a step (B142) of mixing the microencapsulated dicyclopentadiene and the ruthenium catalyst with the self-healing material, a step (B143) of performing a padding process for the self-healing material on the cotton yarn and the polyester cool-touch yarn at 90 to 110°C and 0.5 to 0.8 bar for 5 to 15 minutes, and a step (B144) of fixing the self-healing material to the yarn by drying and heat-treating at 120 to 150°C for 30 to 60 minutes.

The above step (B2) is composed of a step (B21) of refining the polyester cool-touch yarn, a step (B22) of refining the functional cotton yarn, a step (B23) of heat-treating and doping the spandex yarn, and a step (B24) of warping and preparing the refined polyester cool-touch yarn, the functional cotton yarn, and the spandex yarn.

The above (B21) step comprises: a step (B211) of heat-setting the polyester cool-sensitive yarn in a heat treatment oven at 190 to 210°C for 30 to 60 seconds, a step (B212) of immersing the heat-treated polyester cool-sensitive yarn in a refining solution (containing hydrogen peroxide) at 120 to 150°C for 45 to 90 minutes, a step (B213) of refining the immersed polyester cool-sensitive yarn in a steam refining machine at 120 to 140°C and 1.5 to 2.5 bar for 30 to 60 minutes, a step (B214) of cleaning and hot-water washing the refined polyester cool-sensitive yarn to remove residual impurities and drying it at 60 to 80°C for 20 to 40 minutes, and a step (B215) of applying silicone oil to the dried polyester cool-sensitive yarn. It consists of a step (B215) of applying at a concentration of 10 to 20 g/L.

The above (B22) step includes a step (B221) of immersing the functional cotton yarn in a basic NaOH scouring solution containing 10 to 20 g/L at 60 to 80°C for 30 to 60 minutes, a step (B222) of further refining the functional cotton yarn in an acidic sodium sulfite scouring solution containing 2 to 5 g/L at 70 to 90°C for 30 to 60 minutes, a step (B223) of removing residual refining agent from the basic and acidic refining functional cotton yarn through a filtering and washing process and drying it at 60 to 80°C for 60 to 90 minutes, and a step (B224) of improving whiteness by treating the functional cotton yarn with 1 to 3 g/L oxalic acid at 60 to 80°C for 20 to 40 minutes after the drying.

The above step (B23) is composed of a step (B231) of heat-setting the spandex yarn in a heat treatment device at 180 to 230°C for 30 to 90 seconds, a step (B232) of immersing the heat-set spandex yarn in an emulsion solution at 80 to 100°C composed of 50 to 80 g/L silicone oil and 2 to 5 g/L emulsion stabilizer for 10 to 30 minutes, and a step (B233) of drying the spandex yarn in a dryer at 60 to 80°C for 20 to 40 minutes after the emulsion treatment to complete the doping process.

The above (B24) step is composed of a step (B241) of passing the refined polyester cool-touch yarn, the functional cotton yarn, and the spandex yarn through a warping machine with a warping density of 240 to 360 den/inch and a yarn tension of 15 to 25 gf, a step (B242) of dividing the warped polyester cool-touch yarn and the spandex yarn into warp yarns and the functional cotton yarn into weft yarns, a step (B243) of increasing the strength by imparting a yarn twist of 300 to 500 T/m to the warp yarns and the weft yarns, and a step (B244) of maturing the yarns under conditions of 10 to 30°C in the afternoon and 35 to 45% humidity for 24 to 48 hours after the yarn twist.

The above step (B3) is composed of a step (B31) of manufacturing a fabric by performing a double knitting process using the polyester cool-touch yarn, the functional cotton yarn, and the spandex yarn separated by the warp and weft yarns, a step (B32) of applying the self-cleaning material to the fabric, a step (B33) of applying the self-healing material after applying the self-cleaning material, and a step (B34) of applying the antibacterial and deodorizing material and the temperature control material after applying the self-healing material.

The above step (B31) uses a warp knitting machine with warp knitting conditions of a knitting machine gauge of 18 to 24, a cylinder rotation speed of 180 to 250 rpm, a knitting density (course) of 16 to 22 courses/inch, a loop length of 4.5 to 6 mm, a yarn tension of 30 to 50 gf, a knitting temperature of 24 to 30°C, and a relative humidity of 55 to 65%, and a knitting machine gauge of 20 to 28, a needle rotation speed of 350 to 450 rpm, a knitting density (course) of 16 to 24 courses/inch, a loop length of 3 to 4.5 mm, a yarn supply tension of 15 to 25 gf, a knitting temperature of 22 to 28°C, and a relative humidity of 50 to 65% to double knit the warp yarn, which is the polyester cool-touch yarn and the spandex yarn, and the weft yarn, which is the functional cotton yarn, using a double wrap knitting technique. It consists of a step (B311) of manufacturing a fabric by uniformly vertically inserting the functional cotton yarn into the uneven surface layer of the above-mentioned warp.

The above step (B32) is composed of a step (B321) of padding the double-knitted fabric with a dispersion of the nano titanium dioxide (10 to 30 g/L) at a temperature of 25 to 40°C and a pressure of 1 to 3 bar for 3 to 10 minutes, a step (B322) of drying the double-knitted fabric at 120 to 150°C for 2 to 5 minutes after the padding treatment, and a step (B323) of applying the fluorine-based water-repellent agent by spray coating or electrospinning coating after the drying.

The above step (B33) is composed of a step (B331) of applying the fluorine-based water-repellent and then introducing the self-healing material through a padding process at a temperature of 60 to 80°C and a pressure of 0.5 to 1.5 bar for 10 to 30 minutes, and a step (B332) of fixing the self-healing material by drying and heat-treating at 120 to 150°C for 30 to 60 minutes after introducing the self-healing material.

The above step (B34) is composed of a step (B341) of providing antibacterial and deodorizing functions by padding the dispersion of the antibacterial and deodorizing substance, a step (B342) of providing a temperature control function by padding or coating the temperature control substance, and a step (B343) of heat-setting at 140 to 180°C for 1 to 3 minutes.

The above step (C1) comprises a step (C11) of putting the knitted fabric into a liquid dyeing machine at a temperature of 60 to 130°C for 30 minutes to 4 hours and dyeing it, a step (C12) of putting the dyed fabric into a dryer and drying it at 105 to 180°C for 2 to 6 minutes, a step (C13) of putting the dried fabric into a tenter and heat-setting it at a temperature range of 180 to 220°C for 30 seconds to 2 minutes to uniformly induce fabric shrinkage and shape memory material activation while maintaining the fabric width in an excess width state of about 1 to 5% to simultaneously perform width stabilization, a step (C14) of controlling the fabric tensile force at a level of 1 to 3% to maximize the shape memory effect and activating the spandex yarn portion into which the shape memory polyurethane has been introduced at 185 to 195°C for 1 to 3 minutes, and a step (C15) of gradually adjusting the cooling speed to minimize fabric shrinkage and wrinkle occurrence while heating the fabric. It consists of a cooling step (C15) for 2 to 5 minutes in a temperature range of 70 to 90°C and a step (C16) of removing residual impurities and foreign substances on the surface of the fabric.

The reason for drying and dehydrating the polyester chips and cooling additive at 70 to 80°C for 4 to 6 hours in the above step (B111) is to completely remove moisture from the raw material to increase the stability of the subsequent melt extrusion process.

The reason for performing melt extrusion while injecting inert gas (N ₂ ) at a rate of 0.5 to 1.0 L/min in the above step (B112) is to induce uniform dispersion of the cooling additive and prevent oxidation of the raw material molecules. The temperature conditions of 280 to 295°C and the pressure conditions of 30 to 50 bar are the optimal conditions considering the melting point and viscosity of the polyester chips.

The reason for cooling by air or water in the range of 150 to 180°C in the above (B113) step is to efficiently cool the extruded molten sand to increase the solidification speed.

The reason for heat-setting at 270 to 290°C for 20 to 40 seconds in the above (B115) step is to fix the polymer chains aligned by stretching and increase the degree of crystallinity to improve the mechanical properties of the yarn.

The reason for preparing a dispersion by mixing antibacterial and deodorizing substances, temperature control substances, and self-cleaning substances in step (B121) among the above steps (B12) is to ensure that these functional substances are uniformly introduced into the cotton yarn.

The temperature, pressure, and time conditions of the above steps (B122) and (B123) are optimized to allow the functional material to penetrate deep into the cotton yarn.

The above (B124) tuft drying conditions of 90 to 110°C and heat treatment conditions of 120 to 150°C are intended to remove residual moisture in the cotton yarn and to stably fix the functional material.

The reason why dicyclopentadiene and ruthenium catalyst are each manufactured into microcapsules with an average particle size of 10 to 30 μm by interfacial polymerization in step (B141) among the above steps (B14) is to stably introduce a liquid self-healing material into the yarn and to facilitate the healing reaction within the fabric.

The temperature, pressure, and time conditions of the above (B143) step are optimized to allow the microcapsules to penetrate into the yarn.

Among the above (B3) steps, the conditions of the knitting gauge, cylinder rotation speed, knitting density, and loop length in step (B31) are values determined to optimize the density, porosity, and breathability of the fabric. In particular, the knitting gauge and cylinder rotation speed have a direct effect on the formation of pores within the fabric.

The knitting temperature and humidity conditions are set to ensure smooth knitting without changes in the yarn properties.

The above (C2) quality inspection and performance evaluation steps include measuring the thickness of the fabric in the range of 0.3 to 0.8 mm, measuring the weight of the fabric in the range of 150 to 300 g/m2, measuring the tensile strength in the warp/weft direction in the range of 200 to 800 N, measuring the elongation in the warp/weft direction in the range of 15 to 40%, measuring the coefficient of friction in the range of 0.2 to 0.5, and evaluating the pilling property as Grade 3 or higher, and the physical property test step (C21) evaluating the antibacterial property to see if the bacteria reduction rate is 99% or higher, evaluating the deodorizing property to see if the ammonia gas removal rate is 70% or higher, evaluating the cooling sensation to see if the Qmax value is in the range of 0.25 to 0.4 W/g, evaluating the temperature control performance to see if the phase change heat absorption is in the range of 40 to 80 J/g through differential scanning calorimetry (DSC) analysis, and evaluating the self-cleaning performance to see if the contact angle is 150 degrees or higher and the contaminant decomposition rate is 80% or higher. It consists of a functionality evaluation stage (C22) in which performance is evaluated, self-healing performance is evaluated to see if the tensile strength recovery rate after 20% cutting is 75% or higher, shape memory performance is evaluated to see if the shape recovery rate is 90% or higher and the response time is within 5 seconds, and a durability test stage (C23) in which durability tests are conducted for more than 20 washes, sweat durability is evaluated, friction durability is conducted for more than 20,000 times, and light durability is evaluated.

In addition, the present invention is manufactured by the above method into a fabric that provides ventilation and a cool feeling through improved texture.

Hereinafter, the configuration of the present invention and the effects thereof will be described in more detail through specific examples and comparative examples. However, these examples are intended to explain the present invention more specifically, and the scope of the present invention is not limited to these examples.

[Example]

Table 1 below shows the composition and composition ratio of the examples.

division Raw materials/materials Composition ratio (by weight) raw material Cotton yarn 45 Polyester chips 41 Cooling additive Zeolite 1.5 Silicon Carbide 0.5 spandex chips 4 Shape memory polyurethane PTMEG 0.1PCL 0.1
MDI 0.06
BDO 0.03 Functional materials Antibacterial and deodorizing agent Green tea extract 0.5
Chitosan 0.5
Silver nanoparticles 0.1
Copper ion 0.1 Temperature control material n-octadecane 5
Melamine resin 1.2
Surfactant 0.1 Self-cleaning material Anatase nano titanium dioxide 1.5 fluorine water repellent 2 Self-healing material dicyclopentadiene 2
Ruthenium catalyst 0.5

A fabric was manufactured using the raw materials and functional materials of [Table 1] above by the method described in claims 2 and 5.

[Comparative Example 1]

A general fabric was manufactured without any functional material. The fabric was manufactured in a general manner using only 45 parts by weight of cotton yarn, 41 parts by weight of polyester chips, and 4 parts by weight of spandex chips.

[Comparative Example 2]

A fabric was manufactured including only cooling additives. The fabric was manufactured using 45 parts by weight of cotton yarn, 41 parts by weight of polyester chips, 2.5 parts by weight of zeolite, 0.5 parts by weight of silicon carbide, and 4 parts by weight of spandex chips.

[Comparative Example 3]

A fabric was manufactured including only antibacterial/deodorizing substances and temperature regulating substances. The fabric was manufactured using 45 parts by weight of cotton yarn, 41 parts by weight of polyester chips, 4 parts by weight of spandex chips, 0.5 parts by weight of green tea extract, 0.5 parts by weight of chitosan, 0.1 parts by weight of silver nanoparticles, 0.1 parts by weight of copper ions, 5 parts by weight of n-octadecane microcapsules, 1.2 parts by weight of melamine resin, and 0.1 parts by weight of a surfactant.

[Comparative Example 4]

A fabric was manufactured including only self-cleaning materials and self-healing materials. The fabric was manufactured using 45 parts by weight of cotton yarn, 41 parts by weight of polyester chips, 4 parts by weight of spandex chips, 1.5 parts by weight of anatase nano titanium dioxide, 2 parts by weight of a fluorinated water repellent, 2 parts by weight of dicyclopentadiene microcapsules, and 0.5 parts by weight of a ruthenium catalyst.

[Comparative Example 5]

A fabric was manufactured using the same method as in the example, but the step of adding a functional material was omitted.

A fabric was manufactured using a shape memory polyurethane composed of 45 wt. parts of cotton yarn, 41 wt. parts of polyester chips, 2.5 wt. parts of zeolite and 0.5 wt. parts of silicon carbide as a cooling additive, 4 wt. parts of spandex chips, 0.3 wt. parts of PTMEG, 0.3 wt. parts of PCL, 0.06 wt. parts of MDI and 0.03 wt. parts of BDO.

However, the process of adding functional materials such as antibacterial and deodorizing substances, temperature regulating substances, self-cleaning substances, and self-healing substances was omitted, and a fabric with only a cooling function was manufactured.

Coolness evaluation

In order to evaluate the cooling properties of the fabric according to the present invention, the following test was conducted.

A cooling sensation evaluation was conducted on the fabric samples of Examples and Comparative Examples 1 to 5 using a heat transfer simulation device capable of reproducing human skin temperature of 33°C and humidity of 60%.

Specifically, the surface temperature of the heat source of the device was set to 33°C and the humidity to 60%, and each fabric sample was placed in close contact with the surface of the heat source and maintained for 5 minutes, while the temperature change at the interface between the sample and the heat source was measured. The final temperature at which the interface temperature stabilized after 5 minutes was measured.

The results are as shown in Table 2 below.

Sample Final interface temperature (°C) Example Fabric 26.5 Comparative Example 1 (Normal Fabric) 30.5 Comparative Example 2 (Cooling Additive Fabric) 28.8 Comparative Example 3 (Antibacterial/Temperature Control Fabric) 29.5 Comparative Example 4 (Self-cleaning/healing fabric) 31.2 Comparative Example 5 (Fabric with cooling function only) 27.3

As can be seen in the table above, the example fabric showed the lowest final interface temperature of 26.5°C, confirming excellent cooling properties.

The general fabric of Comparative Example 1 showed the highest temperature of 30.5°C, and Comparative Examples 2 to 4, which introduced only a single functional material, also showed high temperatures of 29 to 31°C.

On the other hand, it was confirmed that the example fabric, in which various functional materials were introduced in combination with a cooling additive, effectively inhibited heat transfer and exhibited excellent cooling properties.

This is judged to be the result of effectively suppressing heat transfer through the combined action of various functional substances such as antibacterial, deodorizing, temperature control, self-cleaning, and self-healing in addition to the cooling additive. Therefore, it was confirmed that the fabric of the present invention has excellent cooling properties.

More specifically, it is believed that the reason why heat transfer was most effectively suppressed in the example fabric and the final interface temperature was the lowest is as follows.

The fabric of the present invention contains zeolite and silicon carbide, which are cooling additives, and thus has the effect of hindering heat conduction. In addition, heat transfer by radiation can also be reduced due to the porous structure of the fabric.

In addition, some of the heat is absorbed by the phase change phenomenon of n-octadecane microcapsules, which are temperature-regulating materials, and the microcapsule coating layer of nano titanium dioxide, which is a self-cleaning material, and self-healing materials exhibit additional heat-blocking effects.

In this way, it is thought that the final interface temperature was also measured to be the lowest because the heat transfer was most effectively suppressed in the example fabric through the combined action of various functional materials such as cooling additives, temperature control substances, and self-cleaning/healing substances.

Organizational Assessment

(1) Sample preparation

Fabric samples of Examples 1 to 5 were prepared.

(2) Composition of the evaluation team

A wear evaluation group of 30 men and women in their 20s and 30s was formed.

(3) Evaluation items

- stiffness

- Stretchability

- pressure

- Overall wear comfort

(4) Evaluation method

- All members of the evaluation team wear clothing made of each fabric for 1 hour.

- Subjective scores are given out of 5 for the above 4 items

- Calculate the average of individual wearer scores to determine the final evaluation score for each sample.

(5) Evaluation results

Sample Softness elasticity Compression Overall fit Example 4.1 4.4 4.2 4.5 Comparative Example 1 2.9 1.8 2.5 2.3 Comparative Example 2 3.3 2.1 2.7 2.6 Comparative Example 3 3.7 3.9 3.5 3.7 Comparative Example 4 3.1 2.6 3.0 2.8 Comparative Example 5 3.9 4.1 3.8 4.2

As a result of conducting a texture evaluation on the example fabric of the present invention and various comparative example fabrics by a wear evaluation team, it was confirmed that the example fabric showed the best wearing comfort.

Specifically, in terms of softness, elasticity, compression, and overall wearability, the example fabric received a high score of 4 points, and was evaluated as being significantly superior to other comparative examples.

This is thought to be the result of a combination of factors, including improved breathability due to the cooling additives included in the example fabric, the elasticity effect of spandex and shape memory polyurethane, and the soft feel of the double knit structure.

Therefore, it was confirmed that the fabric of the present invention can greatly improve the wearing comfort by having not only excellent cooling properties but also an excellent texture .

Claims (3)

In a method for manufacturing a fabric that provides ventilation and cooling through improved texture,
(A) Step of preparing raw materials and functional materials for yarn;
(B) a step of manufacturing a fabric using the above raw materials and the above functional material;
(C) a step of post-processing the above fabric;
Including,
Step (B) above,
(B1) A step of manufacturing yarn using the above raw materials and introducing a primary functional material into the yarn;
(B2) A step of refining the above yarn and preparing it for weaving;
(B3) a step of manufacturing a fabric by performing double knitting using the above yarn and introducing a secondary functional material into the fabric;
Step (C) above,
(C1) A step of dyeing the above fabric and performing post-processing;
(C2) A step of inspecting the quality of the above fabric and evaluating its performance;
Including,
The above step (B1) is,
(B11) A step for manufacturing polyester cool-touch yarn using the above raw materials;
(B12) A step of manufacturing functional cotton yarn using the above raw materials and the above functional material;
(B13) A step of manufacturing a spandex yarn with a shape memory function using the above raw material;
(B14) A step of introducing a self-healing material into the functional cotton yarn and the polyester cooling yarn;
Including,
The above step (B11) is:
(B111) A step of drying and dehydrating polyester chips and cooling additives at 70 to 80°C for 4 to 6 hours;
(B112) A step of melt-extruding a dried and dehydrated mixture through a twin screw extruder under conditions of 280 to 295°C and 30 to 50 bar while injecting an inert gas (N ₂ ) at 0.5 to 1.0 L/min to induce dispersion of the cooling additive;
(B113) A step of cooling the extruded molten metal with an air or water-cooled chip cooler at a temperature range of 150 to 180°C;
(B114) A step of improving the tensile strength by stretching the cooled unstretched yarn at a stretching ratio of 3.0 to 4.5 times at 280 to 320°C;
(B115) A step of heat-setting the drawn yarn with improved tensile strength at 270 to 290°C for 20 to 40 seconds, and then subjecting it to a winding and packaging process;
Including,
The above step (B12) is:
(B121) A step of preparing a dispersion by mixing an antibacterial and deodorizing substance, a temperature control substance, and the self-cleaning substance;
(B122) A step of immersing the cotton yarn in the dispersion at 40 to 60°C for 5 to 10 minutes;
(B123) A step of introducing the functional material, the dispersion liquid, into the cotton yarn under a pressure of 0.6 to 0.9 bar for 10 to 20 minutes in a vacuum padding machine;
(B124) A step of drying in a tufter dryer at 90 to 110°C for 3 to 5 hours, then heat treating at 120 to 150°C for 10 to 30 minutes;
Including,
The above step (B13) is:
(B131) A step of drying and dehydrating the above spandex and the above shape memory polyurethane at 90 to 110°C for 6 to 10 hours;
(B132) A step for producing a shape memory spandex raw material by melt extrusion at 260 to 280°C and 80 to 120 bar;
(B133) A step of manufacturing an unstretched yarn by spinning the above spandex raw material at a spinning speed of 0.3 to 0.6 g/min at a nozzle temperature of 240 to 260°C;
(B134) A step of drawing the above-mentioned unstretched yarn at a draw ratio of 3.5 to 5.0 times at 180 to 220°C and heat-setting it at 200 to 240°C for 30 to 60 seconds;
Including,
The above step (B14) is:
(B141) A step of manufacturing dicyclopentadiene and a ruthenium catalyst into microcapsules having an average particle size of 10 to 30 μm by interfacial polymerization;
(B142) A step of mixing the microencapsulated dicyclopentadiene and the ruthenium catalyst with the self-healing material;
(B143) A step of padding the self-healing material onto the cotton yarn and the polyester cool-touch yarn at 90 to 110°C and 0.5 to 0.8 bar for 5 to 15 minutes;
(B144) A step of fixing the self-healing material to the yarn by drying and heat treating at 120 to 150°C for 30 to 60 minutes;
Including,
The above step (B2) is,
(B21) A step of refining the above polyester cool-touch yarn;
(B22) A step of refining the functional cotton yarn;
(B23) A step of heat treating and doping the above spandex yarn;
(B24) A step of preparing and arranging the refined polyester cool-touch yarn, the functional cotton yarn and the spandex yarn;
Including,
The above step (B21) is:
(B211) A step of heat-setting the above polyester cool-touch yarn in a heat treatment oven at 190 to 210°C for 30 to 60 seconds;
(B212) A step of immersing the heat-treated polyester coolant yarn in a refining solution (containing hydrogen peroxide) at 120 to 150°C for 45 to 90 minutes;
(B213) A step of refining the above-mentioned immersed polyester coolant yarn in a steam refiner under the conditions of 120 to 140°C and 1.5 to 2.5 bar for 30 to 60 minutes;
(B214) A step of cleaning and hot water washing the above-mentioned refined polyester cool-touch yarn to remove residual impurities and drying it at 60 to 80°C for 20 to 40 minutes;
(B215) A step of applying silicone oil to the dried polyester cool-touch yarn at a concentration of 10 to 20 g/L;
Including,
The above step (B22) is:
(B221) A step of immersing the functional cotton yarn in a basic NaOH scouring solution containing 10 to 20 g/L at 60 to 80°C for 30 to 60 minutes;
(B222) Additional refining step in a 2 to 5 g/L refining solution containing acidic sodium sulfite at 70 to 90°C for 30 to 60 minutes;
(B223) A step of removing residual refining agent from the functional cotton yarn that has been alkaline and acid-refined through a filtering and washing process and drying it at 60 to 80°C for 60 to 90 minutes;
(B224) A step of improving whiteness by treating with 1 to 3 g/L oxalic acid at 60 to 80°C for 20 to 40 minutes after the drying;
Including,
The above step (B23) is:
(B231) A step of heat-treating the above spandex yarn in a heat treatment device at 180 to 230°C for 30 to 90 seconds;
(B232) A step of immersing the heat-fixed spandex yarn in an emulsion solution of 80 to 100°C consisting of 50 to 80 g/L silicone oil and 2 to 5 g/L emulsion stabilizer for 10 to 30 minutes;
(B233) A step of completing the doping process by drying in a dryer at 60 to 80°C for 20 to 40 minutes after emulsion treatment;
Including,
The above step (B24) is:
(B241) A step of passing the refined polyester cool-touch yarn, the functional cotton yarn and the spandex yarn through a warping machine with a warping density of 240 to 360 den/inch and a yarn tension of 15 to 25 gf;
(B242) A step of dividing the above-mentioned polyester cool-touch yarn and the above-mentioned spandex yarn into warp yarn and the above-mentioned functional cotton yarn into weft yarn;
(B243) A step of increasing the strength by giving the above-mentioned slope and the above-mentioned weft yarns a yarn twist of 300 to 500 T/m;
(B244) A step of maturing for 24 to 48 hours under conditions of 10 to 30°C in the afternoon and 35 to 45% humidity after the above yarn twisting;
Including,
The above step (B3) is,
(B31) A step of manufacturing a fabric by performing a double knitting process using the polyester cool-touch yarn, the functional cotton yarn and the spandex yarn separated by the above-mentioned warp and weft;
(B32) A step of applying the self-cleaning material to the fabric;
(B33) A step of applying the self-healing material after applying the self-cleaning material;
(B34) A step of applying the antibacterial and deodorizing material and the temperature regulating material after applying the self-healing material;
Including,
The above step (B31) is:
(B311) A warp knitting condition of a knitting machine gauge of 18 to 24, a cylinder rotation speed of 180 to 250 rpm, a knitting density (course) of 16 to 22 courses/inch, a loop length of 4.5 to 6 mm, a yarn tension of 30 to 50 gf, a knitting temperature of 24 to 30°C, and a relative humidity of 55 to 65%, and a knitting machine gauge of 20 to 28, a needle rotation speed of 350 to 450 rpm, a knitting density (course) of 16 to 24 courses/inch, a loop length of 3 to 4.5 mm, a yarn supply tension of 15 to 25 gf, a knitting temperature of 22 to 28°C, and a relative humidity of 50 to 65%, is used to double knit the warp yarn, which is the polyester cool-touch yarn and the spandex yarn, and the weft yarn, which is the functional cotton yarn, using a double wrap knitting technique. A step of manufacturing a fabric by uniformly vertically inserting the functional cotton yarn into the uneven surface layer of the slope;
Including,
The above step (B32) is:
(B321) A step of padding the above double-knitted fabric with a dispersion of nano titanium dioxide (10 to 30 g/L) at a temperature of 25 to 40°C and a pressure of 1 to 3 bar for 3 to 10 minutes;
(B322) Drying step at 120 to 150 °C for 2 to 5 minutes after the above padding treatment;
(B323) A step of applying a fluorine-based water-repellent agent by spray coating or electrospinning coating after drying;
Including,
The above step (B33) is,
(B331) A step of applying the above fluorine-based water-repellent agent and then introducing the self-healing material into a padding process under conditions of a temperature of 60 to 80°C and a pressure of 0.5 to 1.5 bar for 10 to 30 minutes;
(B332) A step of fixing by drying and heat treating at 120 to 150°C for 30 to 60 minutes after introducing the self-healing material;
Including,
The above step (B34) is:
(B341) A step of providing antibacterial and deodorizing functions by padding a dispersion of the above antibacterial and deodorizing substance;
(B342) A step of providing a temperature control function by padding or coating the temperature control material;
(B343) Heat-fixing step at 140 to 180°C for 1 to 3 minutes;
Including,
The above step (C1) is,
(C11) A step of dyeing the knitted fabric by putting it into a liquid dyeing machine at a temperature of 60 to 130°C for 30 minutes to 4 hours;
(C12) A step of placing the dyed fabric in a dryer and drying it at 105 to 180°C for 2 to 6 minutes;
(C13) A step of putting a dry fabric into a tenter and heat-setting it at a temperature range of 180 to 220°C for 30 seconds to 2 minutes to uniformly induce fabric shrinkage and activation of shape memory material while maintaining the fabric width in an excess width state of about 1 to 5% to simultaneously perform width stabilization;
(C14) A step of activating the spandex yarn portion into which the shape memory polyurethane is introduced by heating at 185 to 195°C for 1 to 3 minutes while controlling the tensile strength of the fabric to a level of 1 to 3% to maximize the shape memory effect;
(C15) A step of cooling the fabric at a temperature range of 70 to 90°C for 2 to 5 minutes while gradually adjusting the cooling speed to minimize fabric shrinkage and wrinkle occurrence;
(C16) Step of removing residual impurities and foreign substances on the surface of the fabric;
A method for manufacturing a fabric providing ventilation and cooling through an improved texture characterized by including a . delete delete