Fiber coating method

Abstract

The present invention relates to a method for coating fibers with Macsumsuk or clay minerals, and uses Macsumsuk or clay minerals, zirconia silicate, silver nanoparticles, and yucca extract as raw materials, and wet mixes and grinds them to produce granules using a dry method. These are then dry ground and mixed with a solvent to coat the fabric, so that the coating layer does not separate well even when used repeatedly, and deodorizing performance can be maintained.

Description

Technical Field

[0001] The present invention relates to a method for coating Meksoomsuk or clay minerals on fibers.

Background Art

[0002] Textiles for manufacturing mats, futons, pads, clothing (mountaineering clothes), etc. come into contact with the user's body. Therefore, in addition to the function of simply protecting the user's body from the outside as in the past, in recent years, the application of more diverse functions such as heat insulation, ventilation, waterproofing, and water repellency has been required.

[0003] The inventor of the present application is a person skilled in the art mainly dealing with Meksoomsuk, and has made many efforts in the utilization of Meksoomsuk to meet such requirements.

[0004] Meksoomsuk is a rock belonging to quartz porphyry among igneous rocks composed of the following components shown in Table 1 below, and is characterized by being generally weathered and easily cracked. In particular, white feldspar is often kaolinized, and biotite is also mostly oxidized and scattered in the form of iron oxide. It is characterized by a large amount of hornblende contained, contains a large amount of aluminum oxide, has α-rays, and is known to have an effect of having a good influence on organisms. The wavelength generated from Meksoomsuk is known as far-infrared rays in the wavelength band most beneficial to living organisms within the range of 8 - 14 μm.

[0005]

Table 1

[0006] Figure 1 shows the far-infrared radiation amount of Meksoomsuk measured by the Korea Far-Infrared Application Evaluation Institute. The radiation amount unit in Figure 1 is based on measurement at 70°C and is W / m 2It is μm and can be confirmed that it exhibits a high far-infrared radiation amount similar to that of a black body.

[0007] As related technologies for applying the function of Macsumsuk to fiber fabric products in this way, in the "Sound Sleep Bed with Far-Infrared Radiation Macsumsuk Mattress" (Korean Registered Patent No. 10-1034698, Patent Document 1), Macsumsuk having functions such as far-infrared radiation emission, antibacterial, and deodorization is applied to ceramic pieces so that the beneficial functions of Macsumsuk can be applied to bedding.

[0008] Also, in the "Non-Woven Fabric Using a Macsumsuk Powder Mixture and Silver and a Manufacturing Method Thereof" (Korean Registered Patent No. 10-0933138, Patent Document 2), there has been a technology of coating a Macsumsuk powder on a non-woven fabric fiber fabric.

[0009] In the above Patent Document 1, Macsumsuk powder is processed very small and applied to the fabric.

[0010] However, in recent years, adverse effects of nanoparticles on lung health have been reported, and due to various factors such as the uniformity of particle distribution during processing, many opinions have been presented that it is better to apply particles with a larger size rather than applying them as fine nanoparticles.

[0011] Therefore, the inventor of the present application has also presented a technology of applying Macsumsuk-based granules during the rubber and plastic processing processes in the "Far-Infrared and Anion Emitting Silicon Rubber Composition Using Macsumsuk Granules and a Manufacturing Method Thereof" (Korean Registered Patent No. 10-2097714, Patent Document 3) and the "Manufacturing Method of Macsumsuk Granule Antibacterial Plastic Masterbatch" (Korean Registered Patent No. 10-1975955, Patent Document 4).

[0012] The above-mentioned rubber and plastic are more suitable for applying granulated Macsumsuk in the manufacturing process. However, in the case of fabrics, not only is the filament thickness very diverse, but recently, filaments with extremely thin thicknesses have been provided. Therefore, it is impossible to directly apply Macsumsuk granules to the production of the yarns that form the fiber fabric as in Patent Document 3 and Patent Document 4.

[0013] Therefore, it is preferable to apply a coating to the fiber fabric. However, the fact is that the technology for coating the fabric with granulated Macsumsuk has not yet been developed.

Prior Art Documents

Patent Documents

[0014]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Summary of the Invention

Problems to be Solved by the Invention

[0015] The method for coating Macsumsuk or clay minerals on fibers according to the present invention is for solving the problems arising from the prior art as described above, and aims to provide a coating method that can smoothly apply Macsumsuk or clay minerals to a fiber fabric (woven fabric).

[0016] More specifically, after manufacturing granules using Macsumsuk, clay minerals, zirconium silicate, Yucca Extract, silver nano, etc. as raw materials, the granules are pulverized dry and then coated on a fiber fabric, so that it can be easily applied to the fiber fabric.

Means for Solving the Problem

[0017] The method for coating Macsumsuk or clay minerals of the present invention on fibers, in order to solve the above problems, 1) After preparing Macsumsuk or clay minerals, pulverize them to a size of 0.1 - 5 m / m and bake them at a temperature of 800 - 1100 °C to prepare fired mineral particles, a step of preparing fired mineral particles; 2) Prepare zirconium silicate (ZrSiO 3 ), silver nano, and Yucca Extract, mix them with the fired mineral particles to produce a mixture, a mixing step; 3) After adding water to the mixture, wet-mix and pulverize using a ball mill to produce a slurry, a wet pulverization step; 4) Use a granulator to process the slurry by spray drying method to produce granules, a granule production step; 5) Dry-pulverize the produced granules to a size of 0.1 - 50 μm to produce granule powder, a dry pulverization step; 6) Mix the granule powder and a urethane-based solvent and coat the fibers, a coating step; 7) Pass the surface of the fiber after the coating treatment through a gravure roll to treat the surface, a surface treatment step; 8) Laminate and bond the surface of the fabric after the surface treatment with TPU, a laminating step; It is characterized by being configured to include.

[0018] In the above configuration, the mixing step is characterized by mixing 90 - 98.8% by weight of the fired mineral particles, 0.1 - 5% by weight of zirconium silicate, 0.1 - 1% by weight of silver nano, and 1 - 4% by weight of Yucca Extract.

[0019] In the above configuration, in the wet pulverization step, water is added in an amount of 20 - 50 parts by weight based on 100 parts by weight of the mixture.

Effect of the Invention

[0020] The present invention provides a coating method capable of smoothly applying Macsumsuk or clay minerals to a fibrous fabric (woven fabric).

[0021] More specifically, after producing granules using Macsumsuk, clay minerals, zirconia silicate, yucca extract, silver nano, etc. as raw materials, the granules are dry-ground and then subjected to a coating treatment on the fibrous fabric, so that they can be easily applied to the fibrous fabric.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0023] Hereinafter, the method for coating Macsumsuk or clay minerals of the present invention on fibers will be described in detail.

[0024] 1) Preparation stage of fired mineral particles After preparing Macsumsuk or clay minerals, they are ground to a size of 0.1 - 5 m / m and then fired at a temperature of 800 - 1100 °C.

[0025] Macsumsuk consists of the components as described above, belongs to rhyolite among igneous rocks, and is characterized by being generally weathered and prone to cracking. In particular, white feldspar is often kaolinized, and biotite is also mostly oxidized and scattered in the form of iron oxide.

[0026] It is characterized by containing a large amount of hornblende, containing a large amount of aluminum oxide, having alpha rays, and being known to have an effect of having a good influence on organisms.

[0027] The wavelength generated from Macsumsuk is known as a mineral that emits far-infrared rays in a wavelength band beneficial to organisms within the range of 8 - 14 μm.

[0028] Far-infrared rays in this wavelength band are known to activate living cells and promote metabolism.

[0029] Macsumsuk is pulverized based on the fact that the emissivity of far-infrared rays generated when Macsumsuk is pulverized into fine powder is higher than the emissivity of far-infrared rays generated in the rock state.

[0030] In addition, other clay minerals of Macsumsuk also proceed in the same way.

[0031] That is, Macsumsuk and clay minerals may be prepared alone or as a mixture of the two, and the mixing ratio of the two may be such that Macsumsuk and clay minerals are in a weight ratio of 1:0.1 - 5.

[0032] 2) Mixing stage Zirconium silicate (ZrSiO 3 )), silver nano, and yucca extract are prepared and mixed with the fired mineral particles to produce a mixture.

[0033] Zirconium silicate is composed of particles about 10 - 100 μm in size, which penetrate into the fine pores between other raw materials or adhere to the irregular surface grooves to prevent the surface of the granules from becoming uneven, making it smooth and further enhancing the strength.

[0034] Silver nano is an antibacterial substance that enables the exhibition of antibacterial properties within the granules.

[0035] Yucca is a type of cactus that grows naturally in the filamentous zone from southern United States to Central America. Since ancient times, Native Americans have used yucca for therapeutic and health purposes. These can also be cooked and used for food in various ways such as flowers, fruits, seeds, stems, and roots. For medical use, yucca has been effectively used to treat rheumatism and arthritis. For example, the stem of yucca is cut and boiled in water to make a liquid concentrate, which is taken by arthritis patients or applied to the joints. Such methods have been proven by modern science and are still used as arthritis treatment agents in various countries around the world.

[0036] There have been cases where yucca extract has been applied to livestock feed, but there have been no cases of its application to fiber coating until now. In the present invention, the yucca extract plays a role in deodorizing the odor of the fiber fabric itself, the odor generated after the fabric comes into contact with sweat, excrement, etc.

[0037] The mixing ratio of raw materials for this is preferably composed of 90 - 98.8 wt% of fired mineral particles, 0.1 - 5 wt% of zirconium silicate (ZrSiO 3 ), 0.1 - 1 wt% of silver nano, and 1 - 4 wt% of yucca extract.

[0038]

Table 2

[0039] With the above composition, zirconium silicate (ZrSiO 3If the content is less than the minimum content, the texture of the fiber fabric will not be smooth. If it exceeds the maximum content, the fabric price will become excessively high.

[0040] If the silver nano is also contained less than the minimum content, the antibacterial function will decline. If it exceeds the maximum content, the fabric price will increase.

[0041] In the case of yucca extract, if it is less than the minimum content, the deodorizing effect will decline, and when it contains too much, there will be a peculiar smell, which is not appropriate.

[0042] The blending of raw materials in the mixing stage as described above is carried out as shown in Table 2 above.

[0043] 3) Wet grinding stage After adding water to the mixture, wet mixing and grinding are carried out using a ball mill to produce a slurry.

[0044] At this time, water may be added in an amount of 20 - 50 parts by weight based on 100 parts by weight of the mixture.

[0045] 4) Granule manufacturing stage Using a granulator, the slurry is processed by the spray drying method to produce granules.

[0046] More specifically, for granule manufacturing, the burner of the granulator is ignited with hot air to raise the temperature, and the internal temperature of the furnace is increased to 150 - 500 °C. Then, the blower is operated to transfer heat into the cyclone. When the internal temperature reaches a constant temperature, a nozzle is inserted into the lower end of the cyclone, and the slurry is lifted upward using a high-pressure pump.

[0047] At this time, the radiated liquid phase forms a vortex due to the hot air flowing in from the upper side of the cyclone and then falls. The moisture contained in the raw materials evaporates due to the internal heat, and granules with pores formed thereby are obtained.

[0048] Figure 2 shows a micrograph of the granules manufactured in this way.

[0049] As can be seen from the drawings, while the moisture contained in the granular particles rapidly vaporizes inside, the pressure increases due to the temperature expansion of the bubbles formed at this time. When the pressure exceeds a certain level, it breaks through the spherical surface and forms an annular granular morphology as shown in the drawings.

[0050] The annular granular particles from which the water vapor has escaped form small pores at the locations where the water molecules were present.

[0051] 5) Dry grinding stage The manufactured granules are dry ground to a size of 0.1 - 50 μm to produce granular powder.

[0052] For grinding, a pin mill or a dry ball mill can be used. After grinding, only the granular powder within the above - mentioned size range is selected by sieving.

[0053] The reason for going through the dry grinding process is that when the formed granules are directly applied to the fabric, the foreign object feeling on the fabric surface becomes large, and a phenomenon where it is easily separated from the fabric may occur. Therefore, it is to reduce the particle size.

[0054] 6) Coating stage The granular powder and a urethane - based solvent are mixed and used to coat (print) the fibers.

[0055] Examples of urethane - based solvents include thermoplastic polyurethane (TPU). As the coating method, a normal known coating method can be applied, and a printing method can also be applied.

[0056] 7) Surface treatment stage The surface of the fiber after the coating treatment is passed through a gravure roll for surface treatment.

[0057] When passed through the gravure roll, the surface becomes smooth and the water - repellent effect is improved.

[0058] 8) Laminating stage Thermoplastic polyurethane (TPU) is laminated and adhered to the surface of the fabric after the surface treatment is completed.

[0059] In this case, a waterproof effect can be obtained.

[0060] In the lamination process, after laying cotton, net yarn, etc. on the fabric, partial lamination can be performed to obtain a desired pattern and a sense of volume.

[0061] Hereinafter, examples according to the present invention and comparative examples for comparison with the examples will be described.

[0062] After pulverizing Macsumsuk to a size of 0.1 - 5 m / m, it was manufactured with particles fired at a temperature of 1,000 °C, and zirconia silicate, silver nano, and liquid yucca extract with a particle size selected to be 10 - 100 μm were prepared.

[0063] Thereafter, the raw materials were mixed at the mixing ratio shown in Table 3 below to produce a mixture.

[0064]

Table 3

[0065] Next, 100 parts by weight of the mixture and 30 - 50 parts by weight of water with respect to 100 parts by weight of the mixture were mixed, and then wet - mixed and pulverized using a ball mill to produce a slurry.

[0066] Thereafter, the slurry was charged into and processed by a granulator to which the spray - drying method was applied to produce granules.

[0067] Next, the produced granules were pulverized using a dry ball mill and sorted to a size of 0.1 - 50 μm to produce granule powder.

[0068] Next, thermoplastic polyurethane (TPU) was prepared and mixed with the granule powder, and then coated on suede fabric, pure cotton, and 50% cotton - polyester blended fabric respectively.

[0069] Next, after subjecting the coated fabric to surface treatment by passing it through a gravure roll, thermoplastic polyurethane (TPU) was laminated and adhered to the surface of the fabric after the surface treatment was completed.

[0070] [Experimental Example 1] Antibacterial Experiment The coated suede fabric according to Example 1 was entrusted to the Korea Institute of Construction and Living Environment Testing for an antibacterial experiment.

[0071] The experimental method was based on KCl - FIR - 1003:2018. As a result of the experiment, after inoculating Escherichia coli and Staphylococcus aureus and allowing 24 hours to pass in an environment around 37°C, a reduction of 99.1% in Escherichia coli and 96.6% in Staphylococcus aureus was obtained.

[0072] In FIG. 3, a test report is shown, and in FIG. 4, the result by the test is shown as a photograph.

[0073] [Experimental Example 2] Deodorization Test The granule powder during the manufacturing process of Example 1 was used as a sample and entrusted to the Korea Institute of Construction and Living Environment Testing for a deodorization experiment.

[0074] The experimental method was as follows: 20 g of the sample was placed in a reactor with a volume of 5 liters and sealed. Then, the initial gas concentration was injected to 50 μmol / mol, and the concentration of the test gas was measured at 0 minutes, 30 minutes, 60 minutes, 90 minutes, and 120 minutes, and this was calibrated to the sample concentration. The concentration of the test gas was measured with a gas detector tube (SPS - KCL 12218 - 6218). The temperature during the test was maintained at 23.0°C, and the humidity was maintained at a relative humidity of 50%. Separately, the same measurement was performed without a sample in the same way, and this was calibrated as a blank.

[0075] The reduction rate of the test gas concentration for each time period was calculated by the following formula.

[0076] Reduction rate of test gas concentration (%) = {(blank concentration - sample concentration) / blank concentration} × 100

[0077] The test items were ammonia and hydrogen sulfide, and the experimental results are shown in Figures 5 and 6.

[0078] As a result of the experiment, in the case of ammonia gas, it was found that the sample concentration showed a 99.5% reduction rate starting from 30 minutes, and the concentration also decreased in the case of hydrogen sulfide.

[0079] [Experimental Example 3] Measurement of the degree of peeling of the coating layer according to the number of washings The fabrics of the examples and comparative examples were each washed and dried 10 times by type, and the number of washings at which peeling of the coating layer started was measured, and the average value was calculated and shown in Table 4 below.

[0080]

Table 4

[0081] As shown in Table 4 above, it was found that when washing and drying were repeated, the coating layer was preserved for a much longer time in the examples compared to the comparative examples.

[0082] [Experimental Example 4] Sensory evaluation of touch (smoothness) Ten experts were selected, and the touch of the coated fabrics of the above examples and comparative examples was evaluated by type of fabric, and the average value of the touch was calculated and shown in Table 5 below.

[0083]

Table 5

[0084] As shown in Table 5 above, it was found that the fabrics of the examples were superior in touch compared to the comparative examples.

[0085] [Experimental Example 5] Sensory evaluation of touch after washing Ten experts were selected, and the touch immediately after production and the touch after 20 washings were compared for the coated fabrics of the above examples and comparative examples by type of fabric.

[0086] The touch was evaluated, and the average value of the touch was calculated and shown in Table 6-8 below

[0087]

Table 6

[0088]

Table 7

[0089]

Table 8

[0090] As shown in Tables 6 to 8 above, for the fabric of the example, there was almost no felt difference in touch between the initial stage and after 20 launderings, while for the comparative example, it was found that the feel became much worse

[0091] [Experimental Example 6] Measurement Experiment on Change in Deodorizing Performance before and after Laundering Ammonia water with a volume concentration of 28% was diluted with 4 times the volume of water to produce a dilution solution. 0.15 cc of the dilution solution was placed in a 300 cc Erlenmeyer flask to make the ammonia concentration 160 ppm. Then, the fabrics (suede fabrics) of the example and the comparative example were cut, and 20 g of each test piece was put in, and 5 cc of the test solution was added. After sealing and standing for 3 minutes and 60 minutes, the malodor source concentration was measured, and its deviation was calculated

[0092] At this time, the respective deviations of the sample immediately after production and the sample that had been repeatedly laundered and dried 20 times were shown in Table 9 below

[0093] Concentration deviation = concentration after 3 minutes - concentration after 60 minutes

[0094]

Table 9

[0095] As shown in Table 9 above, the fabrics of the examples, although having large numerical values of concentration deviation both immediately after production and after 20 times of washing and drying, are similar to each other. In the case of the comparative examples, not only is the concentration deviation immediately after production less than that of the examples, but also when 20 times of washing and drying are carried out, the concentration deviation is only 8, and it was found that the deodorizing ability is almost lost.

Claims

1. 1) After preparing Mexumsuk or clay minerals, a step of preparing fired mineral particles by crushing them to a size of 0.1 - 5 mm and firing them at a temperature of 800 - 1100 °C; 2) Prepare zirconium silicate (ZrSiO ３ ), silver nanoparticles, and yucca extract, and mix them with the fired mineral particles to produce a mixture; 3) A wet grinding step of adding water to the mixture and then wet-mixing and grinding using a ball mill to produce a slurry; 4) A granule manufacturing step of processing the slurry by a spray-drying method using a granulator to produce granules; 5) A dry grinding step of dry-grinding the produced granules to a size of 0.1 - 50 μm to produce granule powder; 6) A step of mixing the granule powder and a urethane-based solvent to coat the fibers; 7) A surface treatment step of passing the surface of the fiber after the coating treatment through a gravure roll to treat the surface; 8) A laminating step of laminating and adhering TPU to the surface of the fabric after the surface treatment; The fiber coating method is configured to include these steps. The mixing step mixes 90 - 98.8 wt% of the fired mineral particles, 0.1 - 5 wt% of zirconia silicate, 0.1 - 1 wt% of silver nanoparticles, and 1 - 4 wt% of yucca extract.

2. In the wet grinding step, the water is added in an amount of 20 - 50 parts by weight based on 100 parts by weight of the mixture. The fiber coating method according to Claim 1, characterized in that.

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