KR20110088281A - Moisture control fiber and fabric - Google Patents

Abstract

PURPOSE: A moisture control yarn and fabric are provided to ensure air permeability and heat insulation. CONSTITUTION: A moisture control yarn and fabric is formed of polyester fibers. The polyester fiber is prepared by adding functional mineral and inorganic antibacterial agent to polyester resin in a micro-powder form, and treating with alkaline. The polyester fiber has crack or pore in the fiber due to alkaline treatment. The inorganic antibacterial agent is silver powder or silver-containing mineral.

Description

Moisture Control Yarn and Fabrics {MOISTURE CONTROL FIBER AND FABRIC}

The present invention relates to a moisture control yarn and fabric, and to a moisture control yarn having high absorbency and quickly discharging and drying the absorbed moisture and a moisture control fabric manufactured therefrom.

As the standard of living improves, the emergence of fabrics that can produce multi-functional garments with aesthetic appearance while making the human body more comfortable and comfortable beyond the conventional clothing concept is expected. Prior to launching more advanced yarns and fabrics.

As a high-performance, multi-functional yarn or fabric as described above, in the field of sports, mountaineering, and leisure wear, many products have been released due to continuous development for the main purpose of the development of yarn or fabric having a quick-drying function.

Generally, natural fibers such as cotton yarn, woolen yarn, and silk yarn have excellent water absorption, and the synthetic fiber has low crystallinity inside the flying fiber, and there are many hydroxyl groups (-OH) in the chemical structure constituting the fiber. Compared to the high cost of yarn, the economy is inferior. Synthetic fibers have high crystallinity in the fibers and less hydroxyl groups to absorb moisture, so the absorbency is much lower than that of natural fibers. Therefore, a method of coating a hydrophilic monomer (monomer) on the surface of the synthetic fiber in order to increase the absorption in synthetic fibers.

For example, Japanese Patent Publication No. 79-40680 discloses a method of fixing a hydrophilic monomer on the surface of a synthetic fiber. However, the hydrophilic monomer fixing method as described above has a disadvantage that the texture of the knitted fabric becomes hard and the laundry durability is insufficient. In order to solve such a problem, Japanese Patent Laid-Open No. 77-85518 and Japanese Patent Laid-Open No. 79-38663 describe a method of complex spinning of a hydrophobic polymer and a hydrophilic polymer, and Japanese Patent Laid-Open No. 85-194116 A method of using hollow modified fibers for post-processing hollow fibers mixed with sulfonic acid salts to form micropores is described, and Japanese Patent Application Laid-Open No. 81-112535, 85-259618 describes a method using a specially shaped cross-section yarn. However, the composite spinning method has the disadvantage that the water absorption is improved, but the movement of water is slow, so there is no quick drying and the comfort is reduced.

Absorption of water as described above can be solved chemically, but there is a problem in that the moisture combined with the hydroxyl group requires a certain amount of energy in order to dry the absorbed moisture, so that the drying is difficult.

Therefore, a fabric having a function of absorbing fastness has been developed by changing the shape of the fibers constituting the fabric, or by changing the density of the front and back surfaces of the fabric, rather than the chemical method for the absorption and drying of moisture.

For example, Korean Patent No. 0333125 discloses one side woven using polyester fiber and a double woven fabric made of the other side by using polyester / nylon split composite fiber on one side thereof to reduce the gap between the one side and the other side. By varying the size of the water is transferred to the other surface from the one surface to show the absorption quick-drying effect, but the amount of moisture that is absorbed from one surface to the other surface is limited to some extent, initially the function of absorption quick-drying There is a problem that the function is weakened, the method using a hollow fiber and a special shaped cross-section yarn, the hollow fiber has a process difficulty to modify the micropores of the fiber surface to the hollow portion, the special shaped cross-section yarn is a capillary tube Quick drying is good because moisture is moved quickly by the effect. Compared to the surface-modified fiber it had a difficult to radiate the modified cross-section yarn for the capillary effect give a sufficient degree, as well as decrease the water absorption.

The present invention was invented to solve the problems of the prior art as described above, and an object of the present invention is to provide a moisture control yarn and a fabric having a quick drying function due to the physical properties of the fiber.

In addition, it is an object of the present invention to provide a moisture control yarn and fabric excellent in antibacterial, deodorizing function in addition to the absorption quick-drying.

In addition, an object of the present invention is to provide a moisture control yarn and a fabric excellent in breathability and excellent thermal insulation.

The present invention provides a moisture control yarn characterized in that the functional mineral and inorganic antimicrobial agent are added to the polyester resin in the form of fine powder to alkali-process the polyester fiber to be made of polyester fiber having cracks or pores formed therein. do.

In addition, 1 to 10 parts by weight of functional minerals, 0.1 to 2 parts by weight of inorganic antimicrobial agent is added to 100 parts by weight of the polyester resin provides a moisture control yarn.

In addition, the alkali treatment provides a moisture control yarn, characterized in that the treatment by 0.1 ~ 1% NaOH aqueous solution of alkaline water at a reduction rate of 0.1 to 5% by weight.

In addition, the functional mineral is a rare earth stone, mica-based mineral, zeolites, tourmaline, ganban stone, titanium dioxide, calcium carbonate, zirconium, silicon oxide, germanium to provide a moisture control yarn, characterized in that a mixture of two or more. do.

In addition, the inorganic antimicrobial agent provides a moisture control yarn, characterized in that the silver powder or a mineral containing silver.

In addition, the yarn provides a moisture control yarn, characterized in that the yarn is made of yarn.

In addition, the present invention provides a moisture control fabric, characterized in that the yarn is produced.

In addition, the moisture control fabric (KSK 0594 test standard) provides a moisture control fabric, characterized in that more than 100,000 ㎍ / ㎠ · hour.

In addition, the thermal insulation of the moisture control fabric (KSK 0560 test standard) provides a moisture control fabric, characterized in that more than 30%.

In addition, the moisture control fabric provides a moisture control fabric, characterized in that the bacteriostatic activity value 3.0 or more, sterilization activity value 1.0 or more.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

The terms "about "," substantially ", etc. used to the extent that they are used herein are intended to be taken to mean an approximation of, or approximation to, the numerical values of manufacturing and material tolerances inherent in the meanings mentioned, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

As used herein, the term "fabric" is used to include all articles, nonwoven fabrics and fibrous webs produced by weaving or knitting.

The present invention relates to a moisture control yarn which is made of polyester fiber in which cracks or pores are formed in the fiber through weight loss processing of polyester fiber prepared by adding functional mineral and inorganic antibacterial agent to the polyester resin in the form of fine powder.

The functional mineral added to the polyester resin is a mineral that emits far infrared rays or anions, or far infrared rays and anions.

The far infrared rays mean long wavelengths in the infrared, and can penetrate deep into the skin to transfer heat, thereby helping to eliminate bacteria causing various diseases, and expanding capillaries to help blood circulation and cell tissue generation. Can be.

Negative ions are also present in forests, waterfalls, near meadows and parks, and on beaches. People come in contact with these negative ions, giving them a sense of refreshment and relaxation. In addition, it excessively generates deadly free radicals and inhibits the oxidation of cells (reducing action) to actively promote health maintenance activities.

General minerals emit far infrared rays and anions on their own, but their amount varies depending on the mineral formation and structure.

As mentioned above, minerals having a large amount of far infrared ray emission include titanium dioxide, calcium carbonate, zeolite, zirconium, silicon oxide, germanium, tourmaline, and the like. Natural minerals such as magnetite, tourmaline, dolomite, biotite, biotite and other mica minerals.

Functional minerals used in the present invention may be used rare earth, mica minerals, zeolites, tourmaline, elvan, titanium dioxide, calcium carbonate, zirconium, silicon oxide, germanium, or a mixture of two or more thereof.

The functional mineral should be added to the polyester resin in the form of fine powder. Too large a powder of functional minerals may cause a problem of breaking the fiber from which the spinning process is radiated, and damage to the spinning device may occur due to the wear of the device due to the mineral. Therefore, it is preferable that the functional mineral is pulverized to a size of 0.001-3 μm through several grinding processes and added to the polyester resin.

The functional minerals are added to the polyester resin and included in the fiber bundle through a spinning process, and after the fiber is manufactured, some of the functional minerals of the fiber bundle are separated from the fiber to form cracks and numerous micropores on the fiber surface.

The inorganic antimicrobial agent may use a metal or mineral such as titanium dioxide or zinc oxide having an antibacterial function, and it may be preferable to add silver (Ag) in the form of fine powder or use a mineral containing silver.

In the case where the silver-containing mineral is used, silver (Ag) ions may be supported on a mineral such as zeolite, calcium phosphate, or zirconium phosphate, and then ground and used in the same manner as the functional mineral.

The silver-containing minerals may be prepared by supporting 0.5 to 7 parts by weight of silver ions in 100 parts by weight selected from zeolite, calcium phosphate, or zirconium.

The amount of the functional mineral added is preferably 2 to 4 parts by weight of functional minerals is added to 100 parts by weight of polyester resin when producing yarns of 3 denier or less, and 100 parts by weight of polyester resin when producing thicker yarns. Functional minerals can be added up to 8 to 10 parts by weight, preferably 2 to 7 parts by weight.

The inorganic antimicrobial agent is difficult to anticipate antibacterial effect when too small amount is added, and 0.1 to 2 weight of inorganic antimicrobial agent in 100 parts by weight of polyester resin because it may lead to an increase in the unit price of the fabric and a decrease in physical properties of the fiber if too large amount is added. It will be desirable to add additionally.

The polyester resin may be used a polyester resin that is usually used for the production of polyester fibers, and may be used in combination with an elutable polyester resin to increase the effect in the alkali treatment.

The elutable polyester resin may be an alkali-elutable polyester in which isophthalic acid and bisphenol A or S ethylene oxide adducts are copolymerized.

The alkaline treatment is to reduce the 0.1 ~ 5% by weight of the polyester fiber prepared in alkaline aqueous solution to promote the separation of functional minerals contained in the polyester fiber to form cracks and micropores on the polyester fiber moisture control yarn of the present invention It is a process of giving characteristics such as breathability and warmth.

The alkali treatment is preferably to use 0.1 ~ 1% NaOH aqueous alkaline solution, and more preferably use 0.1 ~ 0.5% NaOH aqueous alkaline solution.

The loss ratio of the polyester fiber through the alkali treatment will be most preferably reduced to 0.5 to 2% by weight. The alkali treatment may be preferably performed at 75 to 85 ° C. for 15 to 40 minutes.

The moisture control yarn according to the present invention subjected to the alkali treatment is separated from the surface of the fiber and the functional minerals contained in the inside, and cracks and numerous micropores are formed on the surface and inside of the fiber as shown in FIG. 1.

Moisture control yarn containing the functional minerals and inorganic antimicrobial agent and the cracks and micropores formed by alkaline treatment will be made of a spun yarn to improve the appearance and insulation like natural fibers.

In addition, a number of micropores formed on the surface of the yarn and a cross-sectional structure as shown in Figure 1 is formed in a structure similar to activated carbon can be physically absorbed and deodorized various odors of the outside.

As described above, the moisture control yarn according to the present invention having numerous cracks and micropores caught on the surface and inside of the fiber quickly absorbs the liquid by capillary action and dries the liquid quickly with high breathability.

Fiber treated with a hygroscopic agent using a hydroxyl group (-OH) absorbs moisture well because it contains a lot of hydroxyl group (-OH), but the hydroxyl group prevents moisture evaporation because it forms a film by hydrogen bonding when contacted with moisture. . The moisture control yarn of the present invention absorbs and releases moisture through the physical action compared to the absorbent yarn that absorbed moisture by such chemical action, and absorbs more moisture than the conventional absorbent quick-dry yarn and dries faster. Let's do it.

Therefore, the breathability (KSK 0594 test standard) of the moisture control fabric manufactured by the moisture control yarn according to the present invention is 100,000 µg / cm 2 · hour or more, and the thermal insulation (KSK 0560 test standard) is 30% or more.

In addition, the moisture control yarn of the present invention contains an inorganic antibacterial agent, it is possible to produce a moisture control fabric of bactericidal activity value 3.0 or more, sterilization activity value 1.0 or more.

As described above, the moisture control yarn according to the present invention is a fiber manufactured by mixing a functional mineral that emits far infrared rays and anions with a polyester resin, and has various functions due to mineral properties, and is softer and more luxurious than conventional synthetic fibers. It can produce yarns with an appearance.

In addition, the moisture control fabric according to the present invention is made of a fiber having a number of fine pores, and has a very excellent comfort with high breathability and absorption quick-drying than conventional synthetic fibers or natural fibers.

Therefore, the moisture control fabric according to the present invention is not only suitable for clothing, but also has antibacterial and deodorizing properties, and thus can be applied as a hygiene product having excellent functionality with prevention and deodorization of pathogens.

1 is a view showing a fiber cross section of the moisture control yarn according to the present invention.
Figure 2 is a graph showing the volume of the micropores of the moisture control fabric according to the present invention.

Example

* Manufacture of Moisture Control Yarn

Functional minerals were prepared by mixing dolomite, tourmaline, and titanium dioxide in the same ratio, and the inorganic antimicrobial agent was prepared by supporting 2 parts by weight of silver ions in 100 parts by weight of zeolite.

The functional mineral and the inorganic antimicrobial agent prepared above were added to 100 parts by weight of the polyester resin to 3.5 parts by weight of the functional mineral and 0.8 parts by weight of the inorganic antimicrobial agent to prepare a fiber in a general spinning process, cut into short fibers to prepare a spun yarn, and then 0.2 Alkaline treatment at 80 ° C. for 20 minutes with% NaOH aqueous alkaline solution reduced 1% by weight to prepare 40 water-controlled yarns.

Fabrication

The water control fabric was prepared in plain weave using the 40 water control yarns prepared above.

⊙ Measurement of micropore number of fibers

-The micropores of the fiber can be estimated by measuring the volume of the micropores.

-Test method: Analysis of porosity using Micrometrics Accelerated Surface Area and Porosimetry System, ASAP 2010, a nitrogen adsorption micropore analyzer.

-5g of dye finished sample is put into the sample tube of porosimeter, and after decompression treatment at room temperature for about 6 hours at 2Hg (2 x 10 ^-3 torr) vacuum, the sample tube containing the sample is weighed again. The weight of the pure sample is calculated and the tube containing the sample is placed in a bath containing liquid nitrogen to cool the tube and the sample to the temperature of liquid nitrogen. Nitrogen gas is injected into the cooled vacuum tube at various pre-determined pressures. If a portion of nitrogen gas is adsorbed on the sample surface, the pressure between the tube before adsorption and the pressure after adsorption occurs. Since the difference is proportional to the amount of adsorption, the amount of adsorption at each pressure can be obtained therefrom. When the pressure of the gas necessary to remove nitrogen gas adsorbed to the pores is P, the contact angle of the gas is γ, and the surface tension of the liquid is γ, the diameter D of the pores is

          D = 4γcos / P

. Therefore, the surface area of the sample and the volume of the pores are quantitatively measured through various calculation processes from the measured gas pressure and flow rate, and the measured values are shown in FIG. 2.

As a comparative example, in the untreated polyester yarn and 1% NaOH aqueous alkali solution, a polyester yarn having a weight loss ratio of 10% by weight, 22% by weight and 52% by weight was prepared at 98 ° C. By measuring the volume of the micropores to obtain a graph of the experimental results as shown in FIG.

As shown in the graph of FIG. 2, the moisture control yarn according to the present invention can be seen that the volume of the micropores is larger than the untreated polyester yarn as well as the polyester yarn reduced to 52% by weight. It can be seen that the volume of 4 times larger than all the comparative examples, the number of micropores with a radius of 10Å is 4 times or more than the comparative examples.

Wicking durability test by Birack method

Test standard: Drawing method JIS L1907

Specimens: Ten specimens of size 200 × 25 mm shall be taken in the direction of warp and weft (in the case of knitted fabric, wale and coarse directions). Five sheets are used as test specimens, and the remaining five sheets are used as test specimens after washing three times (103 methods, line-dry).

Test method: Fix the test piece with a pin or the like on a horizontal bar fixed to a certain height on a water bath containing 20 ± 2 ℃, and then straighten the bottom of the test piece so that the bottom of the test piece is immersed in water accurately. Adjust as possible and measure for 10 minutes. After a certain period of time, the height of water rise due to capillary action is measured up to 1 mm by using a ruler (hanging a metal ruler with a specimen on a horizontal rod). The test frequency is 5 times and the average value (mm) is indicated.

Table 1 shows the hygroscopicity of the moisture control fabric of the present invention prepared as an example by the above experimental method.

division Height (mm) Before washing 151 10 times of washing 155 30 times of washing 150 50 times of washing 152

As shown in Table 1 before and after the washing 10 times, 30 times, 50 times the experimental value is almost similar to the moisture control yarn according to the present invention will be seen that the durability of the washing is very excellent.

⊙ Drying Speed Experiment

Test standard: JIS L1096 `` Diffuse residual moisture method ''

Test piece: Test piece shall be used for the test after washing three times (103 method, Line-dry) before washing.

Test method: Weigh the test piece prepared in the size of 202.5cm 2, immerse the test piece in distilled water to be sufficiently absorbed, take it out, and after 10 minutes, determine the weight difference by measuring the weight of the test piece.

Evaporative free water content (g / 202.5㎠) = W-W1

Where W is the weight (g) for 10 minutes taken out of water and W1 is the weight (g) before immersion.

As a comparative example, the cross-shaped polyester cross-section yarn coated with a hygroscopic agent having a hydroxyl group and an untreated hygroscopic cross-polyester cross-section cross-section yarn were tested in the same manner as in the moisture control fabric of the present invention prepared in Examples, and the results are shown in the table. 2 is shown.

division Residual moisture (%) Example 1.95 Untreated hygroscopic cross section yarn 5.41 Hygroscopic treatment sectioned yarn 7.30

As shown in Table 2, the moisture control fabric according to the present invention can be seen that the difference between the weight before immersion and the weight of 10 minutes taken out of the water is very small compared to the release cross-section yarn is very excellent drying. In addition, it can be seen that the drying property is inferior when the moisture absorbent is treated.

⊙ BREATH-ABILITY TEST

Test standard: KSK 0594 『Method of measuring moisture permeability; Water Law 』

Specimens: Take 3 round specimens with a diameter of about 8cm and put the water of about 40 ℃ into 42mm in the moisture permeation cup pre-treated at about 40 ℃, and make the distance between the water and the bottom of the specimen about 10mm. Next, the specimen is placed concentrically in the moisture cup toward the water, and the packing process is put on sequentially and fixed with a butterfly nut. Again, the mounting side is sealed with vinyl adhesive tape to make a specimen.

Test method: Place the test specimen in a constant temperature and humidity device with air circulating at a temperature of 40 ± 2 ℃ and a relative absorbance of 50 ± 5%, and remove the test specimen one hour later, and measure the weight a1 (mg) immediately. Next, remove the specimen and measure the weight a2 (mg).

P: moisture permeability [g / ㎡ · hour]

a1-a2: Change in weight of test specimen after 1 hour treatment [mg / h]

S: moisture permeable area [cm 2]

-As a comparative example, 40 fabrics of Tencel and 40 fabrics of cotton yarn were fabricated in the same manner as in Example, and the air permeability test was performed. The results are shown in Table 3.

division Breathability (㎍ / ㎠ · hour) Example 113322.0 Tencel 8550.0 Cotton fabric 3837.0

As shown in Table 3, it can be seen that the moisture control fabric according to the present invention has excellent air permeability of 10 times or more than the fabric made of Tencel and cotton yarn.

⊙ Insulation property test

Test standard: KSK 0560, JIS L1096; Constant temperature method

Test piece: Take a 30X30cm sample and measure it in the laboratory at 20 ℃ and 65% R.H.

Test method: The most commonly used method is to measure the heat retention by determining the heat loss emitted at the same temperature difference and at the same time. The thermostatic tester is mainly used to measure the heat retention of a knitted fabric or fiber assembly, which measures the calorific value of a heating element kept at a constant temperature and the calorific value when a sample is placed, and also the average calorific value during measurement. And thermal insulation rate (%), sample thermal conductivity (W / m 2 ° C), and CLO values are calculated by measuring the average temperature in the cooling hood. In principle, the tester can be measured on samples with thermal conductivity in the range of 0.7 ~ 14W / ㎡ ℃ and thickness less than 50mm.

-As a comparative example, 40 cells of Tencel and 40 fabrics of cotton yarn were fabricated in the same manner as in Example, and the heat retention test was performed. The results are shown in Table 4.

division Thermal insulation (%) Example 34.4 Tencel 20.5 Cotton fabric 27.6

As shown in Table 4 it can be seen that the moisture control fabric according to the present invention exhibits a very high thermal insulation compared to the fabric made of Tencel and cotton yarn.

⊙ Antibacterial Test

Based on the JIS L1902 quantitative test (bacterial liquid absorption method), bactericidal activity values and bacteriostatic activity values according to the following formulas were obtained. In addition, the measurement of the number of viable cells was performed by the turbid flat plate culture method, and the standard cotton cloth was used as an unprocessed cloth.

Bacteriostatic activity = logB-logC

Here, A is the number of bacteria recovered after inoculation of the raw cloth, B is the number of bacteria recovered after 18 hours of incubation, C is the number of bacteria recovered after 18 hours of culture. In the textile product certification criteria of the Korea Fiber Evaluation Technology Council, antibacterial and deodorant processing is defined as bacteriostatic activity> 2.2, and bactericidal processing (general purpose) is bactericidal activity value ≥0.

In this experiment, Staphylococcus aureus and Klebsiella pneumoniae were used. The results are shown in Table 5.

division Type of bacteria Bacteriostatic activity Bactericidal activity Example Staphylococcus aureus 5.6 3.7 Pneumonia bacilli 3.5 1.3

As shown in Table 5, the moisture control fabric according to the present invention can be seen that the bactericidal activity value> 2.2, the bactericidal activity value ≥ 0 much higher than the antimicrobial activity.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

Claims (10)

A functional control yarn characterized in that the functional mineral and the inorganic antibacterial agent are added to the polyester resin in the form of fine powder to alkali-process the polyester fiber to be made of polyester fiber having cracks or pores formed therein. The method of claim 1,
1 to 10 parts by weight of functional minerals, 0.1 to 2 parts by weight of inorganic antimicrobial agent is added to 100 parts by weight of the polyester resin. The method of claim 1,
The alkali treatment is a moisture control yarn, characterized in that the treatment by 0.1 ~ 1% NaOH aqueous solution of alkaline water at a reduction rate of 0.1 to 5% by weight. The method of claim 1,
The functional mineral is a rare earth stone, mica-based mineral, zeolites, tourmaline, ganban stone, titanium dioxide, calcium carbonate, zirconium, silicon oxide, germanium, moisture control yarn, characterized in that a mixture of two or more. The method of claim 1,
The inorganic antibacterial agent is a moisture control yarn, characterized in that the mineral containing silver powder or silver. The method of claim 1,
The yarn is moisture control yarn, characterized in that the yarn is made of yarn. Moisture control fabric, characterized in that the yarn of any one of claims 1 to 6. The method of claim 7, wherein
The moisture control fabric of the moisture control fabric (KSK 0594 test standard) is characterized in that more than 100,000 ㎍ / ㎠ · hour. The method of claim 7, wherein
The moisture control fabric (KSK 0560 test standard) of the moisture control fabric is characterized in that more than 30%. The method of claim 7, wherein
The moisture control fabric has a bacteriostatic activity value of 3.0 or more, sterilization activity value of 1.0 or more.

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