Antibacterial and antifungal fabric

Abstract

To provide antibacterial and antifungal fabric that shows strong antibacterial and antifungal properties on a wide range of bacteria such as MRSA, Cladosporium, Penicillium, Aspergillus, and offers superior flexibility and washing durability.SOLUTION: Antibacterial and antifungal fabric includes polyester fiber. An antibacterial and antifungal component is bonded while dispersed in the polyester fiber. The solid particles of the antibacterial and antifungal component are bonded, with a density of 20 to 300 particles for every 0.01 mm2 of the polyester fiber surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This invention relates to an antibacterial and antifungal fabric that has wash durability. [Background technology]

[0002] Traditionally, medical and nursing care facilities have been required to maintain high levels of hygiene, making infection control essential. Residents of such facilities generally have weaker immune systems than healthy individuals, posing a risk of opportunistic infections where pathogens that are harmless to healthy individuals become pathogenic to those with weakened immune systems. Therefore, it is necessary to prevent the proliferation of drug-resistant bacteria such as MRSA (methicillin-resistant Staphylococcus aureus), Gram-negative bacilli such as Pseudomonas aeruginosa, Serratia, Klebsiella pneumoniae, and Enterobacter, and fungi such as Aspergillus, Penicillium, Cladosporium, Trichophyton, and Candida within the facilities and their exposure to residents. For this reason, equipment and products used in these facilities must possess antibacterial and antifungal properties, or be easily cleaned during routine cleaning or emergency cleaning in case of contamination.

[0003] For example, Patent Document 1 proposes a polyester fiber having antibacterial and antifungal properties. A masterbatch containing an inorganic antibacterial agent supported on zeolite with silver or zinc is prepared, and the resulting fiber is obtained by melt-fusing and kneading it with polyester resin and spinning it. The number of inorganic antibacterial agent particles in the surface layer is 1.5 times or more than the number of inorganic antibacterial agent particles in the core, and the content is 1 to 4% by weight, resulting in a fiber with excellent durability in antifungal performance. However, the above manufacturing method is evaluated for antibacterial properties against Staphylococcus aureus and Klebsiella pneumoniae, and antifungal properties against Trichophyton, and there is a need for a method that can handle other bacterial species. In addition, since the amount of antibacterial agent added is determined at the spinning stage, it is difficult to customize it to meet the required performance, production quantity, and cost, and the high content of antibacterial agent particles results in a stiff texture. When used in clothing or cover materials for facilities, a stiff texture can cause strong physical irritation to the skin, making users more likely to feel stressed, and significantly impairing the product's appeal. Furthermore, interior products such as curtains require appropriate draping properties, and if the texture becomes stiff, flexibility is lost, rendering the product unusable.

[0004] Patent Document 2 proposes a water-repellent fabric that exhibits antibacterial properties against Staphylococcus aureus, Escherichia coli, and Moraxella after 10 washes. However, because it is water-repellent, it cannot be applied to products that require water absorption, such as underwear and sheets, thus limiting its uses.

[0005] Furthermore, Patent Document 3 proposes a technology for applying antibacterial and antifungal properties to textiles that simultaneously achieves wash durability, particle stability, and stain prevention by adjusting the concentration of the dispersion liquid for antibacterial and antifungal processing, controlling the particle size, and suppressing the inclusion of foreign matter. However, while it is effective against blue mold, ringworm, and MRSA, it is not effective against black mold, which particularly thrives in humid environments. In addition, although the aim is to impart functionality to the fibers by adjusting the concentration of the dispersion liquid, the amount of functional agent adhering varies greatly depending on the fiber material and weave structure, so the functionality may not be fully exhibited depending on the type of fabric. Thus, at present, there is a need for the development of an antibacterial and antifungal fabric that has excellent washing durability and strong antibacterial and antifungal properties against a wide range of bacteria such as MRSA, mold, blue mold, and black mold, which are particularly noted in medical and nursing care facilities.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] The present invention has been made in view of the above problems, and an object thereof is to provide an antibacterial and antifungal fabric that exhibits strong antibacterial and antifungal properties against a wide range of bacteria such as MRSA, mold, blue mold, and black mold, and has excellent durability such as flexibility and washing durability.

Means for Solving the Problems

[0008] The present invention is an antibacterial and antifungal fabric containing polyester fibers, wherein the antibacterial and antifungal component The outer periphery and the entire interior of the fibers is attached in a dispersed state to the polyester fibers, and the solid matter of the antibacterial and antifungal component is attached such that 20 to 300 particles exist per 0.01 mm2 of the surface of the polyester fibers. Furthermore, the particle size of the solid matter of the antibacterial and antifungal component is 1 to 50 μm. It is an antibacterial and antifungal fabric.

[0009] Also, it is preferable that the solid matter of the antibacterial and antifungal component after 50 washes is 3 or more per 0.01 mm , The antifungal properties against black mold before washing and after 50 washes are 95% or higher compared to untreated 100% cotton fabric. ,

[0010] .

[0010] Also, The antifungal properties against black mold before washing and after 50 washes are 95% or higher compared to untreated 100% cotton fabric. is preferable. The antifungal properties will be tested using the following method. Based on the absorption method specified in JIS L1921 12.1.2, the antifungal activity value of the fabric against black mold (NBRC6348) will be calculated, and the antifungal properties will be determined from the reduction rate of mold compared to the control fabric. The antifungal activity value will be calculated using the following formula. For the control sample, a 100% cotton attached white cloth (cotton 3-1) as specified in JIS L1902 3.1 will be used, washed and air-dried according to the specified procedure. Antifungal activity value = FG (F: Growth value of control sample, G: Growth value of test sample) [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an antibacterial and antifungal fabric that exhibits strong antibacterial and antifungal properties against a wide range of fungi such as MRSA, blue mold, and black mold, and has excellent durability such as flexibility and wash durability. [Brief explanation of the drawing]

[0012] [Figure 1] This is a schematic diagram of a polyester fiber to which an antibacterial and antifungal component is attached, according to one embodiment of the present invention. [Modes for carrying out the invention]

[0013] The antibacterial and antifungal fabrics of the present invention will be described below. However, the present invention is not intended to be limited to the configurations described in the embodiments below.

[0014] The antibacterial and antifungal fabric of the present invention contains polyester fibers, and the antibacterial and antifungal component is attached to the polyester fibers in a dispersed state, with the solid matter of the antibacterial and antifungal component being present on the surface of the polyester fibers at a depth of 0.01 mm. 2 They are attached in such a way that there are 20 to 300 of them in the area. In this invention, the dispersed state means that, as shown in Figure 1, the antibacterial and antifungal component 2 is present throughout the polyester fiber 1, and that the antibacterial and antifungal component 2 is present throughout the fiber, not only on the outer periphery of the fiber cross-section but also inside the fiber. Furthermore, even if solid matter such as antibacterial and antifungal component 2' is adjacent, if it is present almost evenly throughout the fiber, including the outer periphery of the fiber cross-section and the inside of the fiber including the center, without being unevenly distributed, it is considered to be in a dispersed state.

[0015] The antibacterial and antifungal component 2 is dispersed and attached to the polyester fiber, and the solid matter of the antibacterial and antifungal component attached to the fiber surface is 0.01 mm. 2 There are 20 to 300 solid particles per unit area. If there are 20 or more solid particles, the antibacterial and antifungal properties are excellent after 50 washes, preferably 30 or more, and more preferably 40 or more. If there are 300 or fewer solid particles, the flexibility is excellent, preferably 250 or fewer, and more preferably 200 or fewer. If there are fewer than 20 solid particles, the amount of antibacterial and antifungal components after 50 washes will be insufficient to exhibit antibacterial and antifungal properties, and the desired antibacterial and antifungal properties cannot be obtained. Furthermore, if there are more than 300 solid particles, flexibility will be impaired, and the amount of components adhering to the fibers will increase, leading to increased shedding during washing and a decrease in the efficiency of improving washing durability relative to the amount used. In addition, because of the excess components, a large amount of components will be shed during washing, increasing the risk of contamination of other textile products washed in the same bath. Furthermore, when measuring the number of antibacterial and antifungal components, elemental mapping is performed using a scanning electron microscope, and solid particles with a particle size of 1 μm or larger are measured. Antibacterial and antifungal components are solid particles with a particle size of 1 to 50 μm. ru.

[0016] It is important that the antibacterial and antifungal components present within the fibers are dispersed and attached to the polyester fibers. If the antibacterial and antifungal components aggregate on the outer edge of the fiber and there are few components in the center of the fiber, the components will be washed away, and antibacterial and antifungal properties cannot be obtained after 50 washes. If the antibacterial and antifungal components are concentrated in the center of the fiber and not present on the outer edge, washing-induced shedding is suppressed, but the antibacterial and antifungal components will hardly be able to come into contact with bacteria attached to the fiber surface, and therefore antibacterial and antifungal properties cannot be obtained.

[0017] The amount of antibacterial and antifungal components attached to the fibers is 0.02 to 6.0 g / m². 2 It is preferable that it be 0.02 g / m 2If it is above, it is excellent in antibacterial and antifungal properties after 50 washes, more preferably, 0.04 g / m 2 or more, and even more preferably, 0.06 g / m 2 or more. If it is 6.0 g / m 2 or less, it is excellent in both antibacterial and antifungal properties and flexibility after 50 washes, more preferably, 5.0 g / m 2 or less, and even more preferably, 4.0 g / m 2 or less. When the fabric is washed, it is considered that part of the antibacterial and antifungal components will fall off. However, if it is less than 0.02 g / m 2 , the content of the antibacterial and antifungal components after 50 washes will be insufficient to exhibit antibacterial and antifungal properties, making it difficult to obtain antibacterial and antifungal properties. Also, if it exceeds 6.0 g / m 2 , it will impair flexibility, and the excessive amount of antibacterial and antifungal components adhering to the fiber surface will increase the amount of shedding during washing, resulting in poor efficiency in improving washing durability with respect to the usage amount. In addition, due to the excessive antibacterial and antifungal components, the amount of components shedding during washing increases, increasing the risk of contaminating other fiber products washed in the same bath.

[0018] The polyester fiber used in the present invention is preferably contained in the fabric at 50% by weight or more, more preferably 60% by weight or more, and even more preferably 70% by weight or more. If the polyester fiber is contained at 50% by weight or more, the antibacterial and antifungal components can be efficiently attached to the polyester fiber, improving the antibacterial and antifungal properties and fabric strength after washing.

[0019] The polyester fiber is not particularly limited, and examples include polyethylene terephthalate (PET), polytrimethylene terephthalate (PTT), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), cation-dyeable polyester, polylactic acid, etc. One or more of these can be used in combination.

[0020] Furthermore, polyester fibers may be used in combination with one or more other fibers, as long as they do not hinder the objectives of the present invention. Examples include natural fibers such as cotton, linen, wool, silk, cashmere, and Tencel; regenerated fibers such as cupro, rayon, and lyocell; acetate fibers, polyamide fibers, acrylic fibers, and urethane fibers, which are used in blends, weaves, twists, weaves, and knits.

[0021] Furthermore, the form of the fabric used in the present invention is not particularly limited, and examples include woven fabrics, knitted fabrics, and nonwoven fabrics, and the presence or absence of elasticity is not limited.

[0022] The antibacterial and antifungal components used in the present invention may be any agent having antibacterial and antifungal properties, such as inorganic agents whose main components are metal elements such as gold, platinum, silver, silver oxide, copper, copper oxide, zinc oxide, cobalt, nickel, zirconium, palladium, and tungsten, 2-chloro-6-trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6-(2-furylmethoxy)pyridine, di(4-chlorophenyl)pyridylmethanol, 2,3,5-trichloro-4-(n-propylsulfonyl)pyridine, 2-pyridylthiol-1- Examples of organic agents include 2-pyridylthiol-1-oxide metal salts such as copper oxide, zinc 2-pyridylthiol-1-oxide, and sodium 2-pyridylthiol-1-oxide; pyridine compounds such as di(2-pyridylthiol-1-oxide); guanidine compounds such as polyhexamethylene guanidine salt and chlorhexidine salt; phenolic compounds such as 3-methyl-4-isopropylphenol and 2-isopyropyr-5-methylphenol; quaternary ammonium salt compounds; organic nitrogen sulfur compounds; and imidazole compounds. One or more of these can be used in combination. Organic agents are preferred because they exhibit faster antibacterial and antifungal activity compared to inorganic agents and can target a wide range of bacteria, with pyridine compounds being even more preferred. In particular, 2-pyridylthiol-1-oxide metal salts are even more preferred because they have good affinity and adhesion to fibers, excellent durability, and a wide range of bacterial species they can target.

[0023] Polyester fibers may or may not contain dyes, but it is preferable in terms of color fastness if the outer periphery of the fiber does not contain dyes. Examples of dyes include disperse dyes, cationic dyes, reactive dyes, acid dyes, and direct dyes, and one or more of these can be used in combination.

[0024] When obtaining a fabric containing antibacterial and antifungal components in polyester fibers, methods commonly used in textile processing can be employed. For example, (1) a method of immersing the fabric in a treatment solution containing antibacterial and antifungal components and exhausting the solution in a bath at 80-140°C under normal or pressurized pressure, or (2) a method of impregnating the fabric with a treatment solution containing antibacterial and antifungal components by immersing, spraying, or coating the fabric, removing excess liquid by pressing or centrifugal dewatering as needed, and then heat-treating and drying at 80-180°C. Among these, method (1), the exhaustion treatment, is preferred because it allows the antibacterial and antifungal components to penetrate deep into the fibers and adhere appropriately and uniformly to the fiber surface, at a concentration of 0.1-3 kg / cm³. 2 It is preferable to perform the procedure under pressure within the range of (gauge pressure).

[0025] Furthermore, the treatment solution containing antibacterial and antifungal components may contain other components as needed, such as dyes, various dyeing aids, anti-yellowing agents, antistatic agents, water absorbents, water repellents, insect repellents, flame retardants, softeners, pH adjusters, etc., as long as they do not hinder the purpose of the present invention, and is not particularly limited.

[0026] Furthermore, after processing with the aforementioned processing solution, additional processing may be performed to impart functionalities other than antibacterial and antifungal properties, improve texture, increase strength, or adjust pH, provided that it does not hinder the objectives of the present invention. Examples of functionalities include antistatic properties, flame retardancy, deodorizing properties, quick-drying properties, and temperature sensitivity. Methods for imparting functionality, improving texture, increasing strength, and adjusting pH include, for example, immersion processing and spray processing similar to processing method (2) above, as well as relaxation processing using a tumble dryer, calendering processing using resin and metal rolls, buffing processing using a polishing machine, resin coating processing, film bonding processing, and fabric bonding processing.

[0027] In the antibacterial and antifungal fabric of the present invention, the amount of antibacterial and antifungal components adhering to the fibers after 50 washes is 0.01 g / m². 2 The above is preferable, and the fibers exhibit excellent antibacterial and antifungal properties even after 50 washes, more preferably 0.02 g / m 2The above, and more preferably 0.025 g / m² 2 That's all. The content is 0.01 g / m³. 2 If the amount is less than the target level, the amount of antibacterial and antifungal components will be insufficient to exhibit antibacterial and antifungal properties, and the desired antibacterial and antifungal properties cannot be obtained.

[0028] Note that 50 washes means repeating the following series of operations 50 times. This is done using a household washing machine equipped with a centrifugal wringing device that conforms to the JIS C9606 standard, and following the method described in JIS L0217 Appendix 1 Washing Method 103. Specifically, 40 ml of JAFET standard blended detergent (containing polyoxyethylene alkyl ether and alpha-olefin sulfonate sodium) is dissolved in 30 liters of water at a liquid temperature of 40°C to make a washing solution. The sample and, if necessary, the load fabric are added to this washing solution so that the bath ratio of fabric to washing solution is 1:30. Then, after washing for 5 minutes, the fabric is dehydrated, rinsed with fresh room temperature water for 2 minutes, dehydrated again, rinsed with fresh room temperature water for 2 minutes, and dehydrated again. This process constitutes one wash, and 50 washes means repeating this series of operations 50 times.

[0029] Furthermore, in the antibacterial and antifungal fabric of the present invention, the state of adhesion of the antibacterial and antifungal components to the fiber surface after 50 washes is such that the solid matter is 0.01 mm. 2 It is preferable to have three or more solid particles per unit area. If there are three or more solid particles, the fibers will still exhibit excellent antibacterial and antifungal properties even after 50 washes. More preferably, there are five or more, and even more preferably, ten or more. If there are fewer than three solid particles, the amount of antibacterial and antifungal components will be insufficient to exhibit antibacterial and antifungal properties, and the desired antibacterial and antifungal properties cannot be obtained.

[0030] In the antibacterial and antifungal fabric of the present invention, the antibacterial activity of the fabric before washing and after 50 washes is preferably 2.5 or higher for Staphylococcus aureus, Klebsiella pneumoniae, and MRSA, and more preferably 3.5 or higher.

[0031] Furthermore, in the antibacterial and antifungal fabric of the present invention, the antifungal properties of the fabric before washing and after 50 washes preferably show a reduction rate of 95% or more in blue mold, black mold, black aspergillus, and dermatophytes compared to untreated 100% cotton fabric, and more preferably 99% or more. If the reduction rate is 95% or more, users can feel that mold growth is suppressed when using products made with the antibacterial and antifungal fabric of the present invention.

[0032] The antibacterial and antifungal fabric of the present invention exhibits excellent antibacterial and antifungal properties before and after washing by dispersing an appropriate amount of solid antibacterial and antifungal components within the fibers and on the fiber surface. Furthermore, the antibacterial and antifungal fabric of the present invention can continuously exhibit excellent antifungal properties even in continuous antifungal tests using the same test piece.

[0033] In the antibacterial and antifungal fabric of the present invention, the rigidity-softness ratio in the JIS L1096 8.21 A method 45° cantilever method is preferably 42 mm or less, more preferably 38 mm or less, and even more preferably 35 mm or less. If it is 42 mm or less, the fabric feels soft when in contact with the body, and the stiffness characteristic of functional processed products can be reduced. [Examples]

[0034] The following describes examples of the present invention, but the present invention is not limited to these examples. The antibacterial and antifungal fabrics obtained in Examples 1 to 7 and Comparative Examples 1 to 4 were measured for their physical properties using the following measurement methods. The measurement results are shown in Table 1.

[0035] <Measurement Method and Evaluation Method> (1) Tensile strength At five arbitrary locations, the tensile strength (N) was measured according to JIS L1096 8.14.1 Method A, strip method, with a test specimen width of 50 mm, gripping distance of 200 mm, and tensile speed of 150 ± 10 mm / min. The average value was calculated and evaluated. A tensile strength of 300 N or higher indicates that the fabric retains sufficient tensile strength.

[0036] (2) Tear strength At five arbitrary locations, the tear strength (N) was measured using the JIS L1096 8.17.1 Method A Single Tongue Method, with a tensile speed set to 150 ± 10 mm / min. The average value was calculated and evaluated. A tear strength of 15 N or higher indicates that the fabric retains sufficient tear resistance.

[0037] (3) Laundry process A household washing machine equipped with a centrifugal wringing device conforming to the JIS C9606 standard was used, and the washing process was carried out according to Washing Method 103 of Appendix 1 of JIS L0217. 40 ml of JAFET standard detergent (containing polyoxyethylene alkyl ether and sodium alpha-olefin sulfonate) was dissolved in 30 liters of water at 40°C to prepare the washing solution. The sample and, if necessary, the load fabric were added to this washing solution so that the fabric:washing solution ratio was 1:30. Next, after washing for 5 minutes, the fabric was dewatered, rinsed with fresh room temperature water for 2 minutes, dewatered again, rinsed with fresh room temperature water for 2 minutes, and dewatered again. This process constituted one wash cycle. "50 washes" means repeating this series of operations 50 times. After repeated washing was completed, the fabrics were hung to dry in a place away from direct sunlight and used for evaluation after being thoroughly dried.

[0038] (4) Observation of fiber surface state and dispersion state The surface of the fibers before and after washing was photographed at five arbitrary locations using a scanning electron microscope (S-3000N, Hitachi Science Systems, Ltd.) at a magnification of 800x, and the 0.01mm in the SEM image was measured. 2 The number of solid particles of antibacterial and antifungal components with a particle size of 1 μm or larger within the measurement area was measured, and the average value was calculated before and after washing. Furthermore, at five arbitrary locations, the fiber cross-section was mapped and analyzed at a magnification of 1500x using a desktop microscope (Miniscope TM4000Plus, Hitachi High-Technologies Corporation) to confirm the dispersion state of the antibacterial and antifungal components. "Dispersion" was defined as the state in which the antibacterial and antifungal components are present not only on the outer periphery of the fiber cross-section but also throughout the entire fiber, including the interior of the fiber.

[0039] (5) Content of antibacterial and antifungal components At five arbitrary locations, fabrics before and after washing were incinerated in an electric furnace, and aqueous solutions were prepared by dissolving the incinerated fabric in concentrated hydrochloric acid. Simultaneously, aqueous solutions of antibacterial and antifungal components were prepared at multiple concentrations as standard solutions to serve as a calibration curve. The absorbance of each aqueous solution was measured using a polarized Zeeman atomic absorption spectrophotometer (Z-2310, Hitachi High-Technologies Corporation). A calibration curve was created from the absorbances measured in the calibration solutions, and the content of the antibacterial and antifungal components was calculated based on this calibration curve, and the average value was calculated.

[0040] (6) Antibacterial properties Based on JIS L1902 8.1 bacterial suspension absorption method, the antibacterial activity values ​​of the fabric against Staphylococcus aureus (NBRC12732), Klebsiella pneumoniae (NBRC13277), and MRSA (IID1677) were calculated, and the antibacterial properties were determined. The antibacterial activity value, which serves as the criterion for judging antibacterial performance, was calculated using the following formula, and the antibacterial performance against each bacterium was evaluated according to the following criteria. In addition, the control sample used was 100% cotton attached white cloth (cotton 3-1) as specified in JIS L1902 3.1, which was washed and air-dried according to the specified procedure. Antimicrobial activity value = DE (D: Growth value of control sample, E: Growth value of test sample) ◎: Antibacterial activity value of 3.5 or higher before washing and after 50 washes. ○: Antibacterial activity value of 2.5 or higher before washing and after 50 washes. △: Antibacterial activity value before washing only, 2.5 or higher. ×: The antibacterial activity value before washing and after 50 washes is less than 2.5 in both cases.

[0041] (7) Antifungal properties Based on the absorption method specified in JIS L1921 12.1.2, the antifungal activity values ​​of the fabrics against Penicillium (NBRC6352), Black mold (NBRC6348), Aspergillus niger (NBRC105649), and Trichophyton (NBRC32412) were calculated, and the antifungal properties were determined by the reduction rate of mold fungi compared to the control fabric. The antifungal activity values ​​were calculated using the following formula, and the antifungal performance against each type of mold was evaluated according to the following criteria. For the control sample, 100% cotton attached white cloth (cotton No. 3-1) as specified in JIS L1902 3.1 was used, washed and air-dried according to the specified procedure. Antifungal activity value = FG (F: Growth value of control sample, G: Growth value of test sample) ◎: Mold reduction rate of 99% or more before washing and after 50 washes. ○: Mold reduction rate of 95% or more before washing and after 50 washes. △: Only the reduction rate of mold spores before washing is 95% or higher. ×: The reduction rate of mold spores before washing and after 50 washes was less than 95% in both cases.

[0042] (8) Flexibility (flexibility) At five arbitrary locations, a test specimen was placed on top of a cantilever-type testing machine according to JIS L1096 8.21 Method A, 45° cantilever method. The test specimen was then gently slid in the direction of the slope, and the distance (mm) moved from the position where the center point of one end of the test specimen touched the slope was measured. The average value was calculated and evaluated according to the following criteria. ◎: Length 35mm or less ○: Length is 35mm or more but less than 38mm △: Length is 38mm or more but less than 42mm ×: Length exceeds 42mm

[0043] <Fabric used> [Fabric (1)] Using 150dtex / 96 filament polyester yarn (polyethylene terephthalate), with a basis weight of 220g / m². 2 A circular knit fabric with a plain weave was produced and designated as fabric (1).

[0044] [Fabric (2)] Using 150dtex / 96 filament polyester yarn (polyethylene terephthalate) and 60 count cotton yarn, the fabric weight is 230g / m². 2 A circular knit fabric with a plain knit structure was prepared and designated as fabric (2). Fabric (2) contains 80% polyester by weight, and the polyester fiber content of the resulting knitted fabric is 184 g / m². 2 That was the case.

[0045] [Fabric (3)] Using 150dtex / 96 filament polyester yarn (polyethylene terephthalate), 40 count cotton yarn, and 22dtex polyurethane yarn, the fabric has a weight of 200g / m². 2 A circular knit fabric with a bare jersey structure was prepared and designated as fabric (3). Fabric (3) contains 55% polyester by weight, and the polyester fiber content of the resulting knitted fabric is 110 g / m². 2 That was the case.

[0046] [Fabric (4)] Using 150dtex / 96 filament polyester yarn (polyethylene terephthalate), 117dtex / 80 filament cupro-nylon blend yarn, and 22dtex polyurethane yarn, the fabric has a basis weight of 220g / m². 2 A circular knit fabric with a bare jersey structure was prepared and designated as fabric (4). Fabric (4) contains 65% polyester by weight, and the polyester fiber content of the resulting knitted fabric is 154 g / m². 2 That was the case.

[0047] [Fabric (5)] Using 150dtex / 96 filament polyester yarn (polyethylene terephthalate), 60 count cotton yarn, and 22dtex polyurethane yarn, the fabric has a weight of 180g / m². 2 A circular knit fabric with a bare jersey structure was prepared and designated as fabric (5). Fabric (5) contains 35% polyester by weight, and the polyester fiber content of the resulting knitted fabric is 63 g / m². 2 That was the case.

[0048] [Example 1] First, a dyeing solution was prepared by mixing the following: disperse dyes (A) 0.2% owf of Sumikaron Yellow SE-RPD (manufactured by Sumitomo Chemical Co., Ltd.), 0.2% owf of Sumikaron Red SE-RPD (manufactured by Sumitomo Chemical Co., Ltd.), and 0.1% owf of Sumikaron Blue SE-RPD (manufactured by Sumitomo Chemical Co., Ltd.); antibacterial and antifungal agent (B) 0.5% owf of Sanitized TH 22-27 (manufactured by Arkroma Japan, a pyridine compound-containing aqueous dispersion, active ingredient: 2-pyridylthiol-1-oxide zinc); Nikka Sansalt 8000 (manufactured by Nikka Chemical Co., Ltd.) 0.5 g / L as a uniforming agent; and acetic acid 0.5 cc / L as a pH adjuster. Using this dyeing solution, the fabric (1) was dyed at 130°C for 60 minutes at a bath ratio of 1:10 and a density of 2 kg / cm². 2 The material was processed using (gauge pressure). Next, it was washed, dewatered, and then heat-treated at 130°C for 2 minutes to dry. Thus, the solid antibacterial and antifungal components adhering to the fiber surface amounted to 0.01 mm. 2 Approximately 105 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 2.8 g / m². 2 Thus, we obtained the antibacterial and antifungal fabric of Example 1. Furthermore, it was confirmed that the antibacterial and antifungal components were attached to the polyester fibers in a dispersed state.

[0049] [Example 2] A dyeing solution was prepared by mixing the following: disperse dye (A) Sumikaron Yellow SE-RPD 0.1%owf, Sumikaron Red SE-RPD 0.1%owf, Sumikaron Blue SE-RPD 0.3%owf; antibacterial and antifungal agent (B) Sanitized TH 22-27 0.3%owf; Nikka Sansalt 8000 0.5g / L as a uniforming agent; and acetic acid 0.5cc / L as a pH adjuster. A dyeing solution was also prepared by mixing the following: reactive dye (C) Sumifix Supra Blue BRF (manufactured by Sumitomo Chemical Co., Ltd.) 0.4%owf; sodium carbonate 15g / L and anhydrous sodium sulfate 30g / L as fixatives. The fabric (2) was placed in the dyeing solution containing (A) and (B) and dyed at 130°C for 60 minutes at a rate of 2kg / cm². 2After processing under (gauge pressure) conditions, washing and dewatering were performed. Subsequently, the fabric (2) was immersed in a dyeing solution mixed with (C) and processed at 80°C for 40 minutes under normal pressure. After that, washing and dewatering were performed, and it was heat-treated at 130°C for 2 minutes and dried. The solid matter of antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 48 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 0.070 g / m². 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0050] [Example 3] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.1%owf, Sumikaron Red SE-RPD 0.04%owf, and Sumikaron Blue SE-RPD 0.3%owf as disperse dyes (A), Sanitized TH 22-27 0.2%owf as an antibacterial and antifungal agent (B), Nikka Sun Salt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. A dyeing solution was also prepared by mixing Sumifix Supra Blue BRF 0.4%owf as a reactive dye (C), sodium carbonate 15g / L, and anhydrous sodium sulfate 30g / L as fixatives. These dyeing solutions were used as a dyeing solution mixed with (A) and (B), and a dyeing solution mixed with (C), and the process was carried out in the same manner as in Example 2, except that the fabric used was fabric (3) and the fabric was processed accordingly. The solid particles of antibacterial and antifungal components adhering to the fiber surface are 0.01 mm in size. 2 Approximately 22 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 0.025 g / m². 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0051] [Example 4] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.1%owf, Sumikaron Red SE-RPD 0.04%owf, and Sumikaron Blue SE-RPD 0.3%owf as disperse dyes (A), Sanitized TH 22-27 0.3%owf as an antibacterial and antifungal agent (B), Nikka Sansalt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. A dyeing solution was also prepared by mixing Sumifix Supra Blue BRF 0.4%owf as a reactive dye (C), sodium carbonate 15g / L, and anhydrous sodium sulfate 30g / L as fixatives. These dyeing solutions were used as a dyeing solution mixed with (A) and (B), and a dyeing solution mixed with (C), and the fabric used was fabric (4), and the process was carried out in the same manner as in Example 2. The solid particles of antibacterial and antifungal components adhering to the fiber surface are 0.01 mm in size. 2 Approximately 33 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 0.042 g / m². 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0052] [Example 5] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.1%owf, Sumikaron Red SE-RPD 0.04%owf, and Sumikaron Blue SE-RPD 0.5%owf as disperse dyes (A), Sanitized TH 22-27 0.8%owf as an antibacterial and antifungal agent (B), Nikka Sansalt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. The procedure was carried out in the same manner as in Example 1, except that processing was performed using this dyeing solution. At this time, the solid matter of the antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 185 particles adhered to the surface, resulting in an antibacterial and antifungal content of 3.7 g / m² of fabric. 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0053] [Example 6] A dyeing solution was prepared by mixing the following: disperse dyes (A) of Sumikaron Yellow SE-RPD 0.2%owf, Sumikaron Red SE-RPD 0.02%owf, and Sumikaron Blue SE-RPD 0.5%owf; antibacterial and antifungal agent (B) of 2-pyridinethiol-1-oxide sodium (aqueous dispersion containing pyridine compounds, manufactured by Tokyo Chemical Industry Co., Ltd., active ingredient: 2-pyridinethiol-1-oxide sodium) 1.2%owf; Nikka Sun Salt 8000 0.5g / L as a uniforming agent; and acetic acid 0.5cc / L as a pH adjuster. The procedure was carried out in the same manner as in Example 1, except that processing was performed using this dyeing solution. At this time, the solid matter of the antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 235 particles adhered to the surface, resulting in an antibacterial and antifungal content of 4.4 g / m² of fabric. 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0054] [Example 7] A treatment solution of 1.5% sodium 2-pyridinethiol-1-oxide (OWF) was prepared as the antibacterial and antifungal agent (B), and the fabric (1) was treated at 130°C for 60 minutes with a bath ratio of 1:10 and a load of 2 kg / cm². 2 The processing was carried out using (gauge pressure). Note that this embodiment is a so-called bleached product, without the use of dyes. Next, washing and dewatering were performed, followed by heat treatment at 130°C for 2 minutes and drying. Thus, the solid matter of antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 280 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 5.2 g / m². 2 This resulted in the antibacterial and antifungal fabric of Example 7. It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0055] [Comparative Example 1] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.05%owf, Sumikaron Red SE-RPD 0.05%owf, and Sumikaron Blue SE-RPD 0.15%owf as disperse dyes (A), Sanitized TH 22-27 0.1%owf as an antibacterial and antifungal agent (B), Nikka Sansalt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. A dyeing solution was also prepared by mixing Sumifix Supra Blue BRF 0.2%owf as a reactive dye (C), sodium carbonate 15g / L, and anhydrous sodium sulfate 30g / L as fixatives. These dyeing solutions were used as a dyeing solution mixed with (A) and (B), and a dyeing solution mixed with (C), and the process was carried out in the same manner as in Example 2, except that the fabric used was processed as fabric (5). The solid particles of antibacterial and antifungal components adhering to the fiber surface are 0.01 mm in size. 2 There were 8 particles attached per area, and the antibacterial and antifungal component content on the fabric was 0.008 g / m². 2 It was confirmed that the antibacterial and antifungal components were mainly attached to the outer surface of the polyester fibers.

[0056] [Comparative Example 2] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.2%owf, Sumikaron Red SE-RPD 0.2%owf, and Sumikaron Blue SE-RPD 0.1%owf as disperse dyes (A), Sanitized TH 22-27 2.5%owf as an antibacterial and antifungal agent (B), Nikka Sansalt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. The procedure was carried out in the same manner as in Example 1, except that processing was performed using this dyeing solution. At this time, the solid matter of the antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 375 particles adhered to the surface, and the antibacterial and antifungal content of the fabric was 7.1 g / m². 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0057] [Comparative Example 3] A dyeing solution was prepared by mixing Sumikaron Yellow SE-RPD 0.3%owf, Sumikaron Red SE-RPD 0.225%owf, and Sumikaron Blue SE-RPD 0.3%owf as disperse dyes (A), Sanitized TH 22-27 0.15%owf as an antibacterial and antifungal agent (B), Nikka Sansalt 8000 0.5g / L as a uniforming agent, and acetic acid 0.5cc / L as a pH adjuster. The procedure was carried out in the same manner as in Example 1, except that processing was performed using this dyeing solution. At this time, the solid matter of the antibacterial and antifungal components adhering to the fiber surface was 0.01 mm. 2 Approximately 16 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 0.010 g / m². 2 It was confirmed that the antibacterial and antifungal components were mainly attached to the outer surface of the polyester fibers.

[0058] [Comparative Example 4] The procedure was carried out in the same manner as in Example 7, except that a treatment solution of 2.0% owf containing 2-pyridinethiol-1-oxide sodium was prepared as the antibacterial and antifungal agent (B), and processing was performed using this treatment solution. The solid matter of the antibacterial and antifungal component adhering to the fiber surface was 0.01 mm 2 Approximately 315 particles adhered to the fabric, resulting in an antibacterial and antifungal content of 6.2 g / m². 2 It was confirmed that the antibacterial and antifungal components were dispersed and attached to the polyester fibers.

[0059] Table 1 shows the results of evaluating the antibacterial and antifungal fabrics obtained in Examples 1-7 and Comparative Examples 1-4 using the evaluation method described above.

[0060] [Table 1]

[0061] The antibacterial and antifungal fabrics of Examples 1-7 exhibited excellent antibacterial and antifungal properties, as well as superior fabric strength and flexibility, both before washing and after 50 washes.

[0062] On the other hand, the antibacterial and antifungal fabric of Comparative Example 1 lacked sufficient strength due to the low proportion of polyester fibers in the overall composition, and also exhibited low antibacterial and antifungal properties due to insufficient antibacterial and antifungal components. Furthermore, the antibacterial and antifungal fabrics of Comparative Examples 2 and 4 suffered from reduced flexibility due to excessive adhesion of antibacterial and antifungal components. In addition, the antibacterial and antifungal fabric of Comparative Example 3 did not exhibit sufficient antibacterial and antifungal properties after washing due to insufficient adhesion of antibacterial and antifungal components. [Explanation of Symbols]

[0063] 1. Polyester fiber 2, 2' Antibacterial and antifungal components

Claims

1. An antibacterial and antifungal fabric containing polyester fibers, The antibacterial and antifungal components are dispersed and attached to the outer surface and the entire interior of the polyester fibers. The solid material of the antibacterial and antifungal component is present on the surface of the polyester fiber at a depth of 0.01 mm. ２ There are 20 to 300 of them attached to the area. Furthermore, an antibacterial and antifungal fabric having a particle size of 1 to 50 μm for the solid particles of the antibacterial and antifungal component.

2. The amount of solid matter containing the antibacterial and antifungal component after 50 washes was 0.01 mm. ２ The antibacterial and antifungal fabric according to claim 1, which has three or more of these particles present in the vicinity.

3. The antibacterial and antifungal fabric according to claim 1 or 2, wherein the antifungal activity against black mold before washing and after 50 washes is 95% or more compared to an unprocessed 100% cotton fabric. The antifungal properties will be tested using the following method. Based on JIS L1921 12.1.2 Absorption Method, the antifungal activity value of the fabric against black mold (NBRC6348) is calculated, and the antifungal properties are determined from the reduction rate of mold compared to the control fabric. The antifungal activity value is calculated using the following formula. The control sample is based on JIS L1902 Use the attached white cloth (cotton 3-1) made of 100% cotton as specified in 3.1, which has been washed and air-dried according to the prescribed procedure. Antifungal activity value = F - G (F: Growth value of control sample, G: Growth value of test sample)

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