KR101230427B1 - Manufacturing method for antibacteria fiber - Google Patents

Abstract

The present invention relates to an antimicrobial fiber manufacturing method which can give an antibacterial function without changing the washing durability and touch of the yarn by antimicrobial processing of the cellulose-based yarn by graft polymerization reaction using steaming in a reactor of a general dyeing apparatus. .
The antimicrobial fiber manufacturing method of the present invention is a method for antimicrobial treatment of cellulose-based thread, the antimicrobial solution manufacturing step of mixing a polymerization initiator, an antimicrobial monomer and water, an antimicrobial solution infiltrating the antimicrobial solution into the bobbin wound around the cellulose-based thread Treatment step, the step of draining and dehydrating the antibacterial liquid penetrated into the reactor and the bobbin, supplying steam to the inside of the reactor to thermal graft polymerization reaction of the cellulose-based yarn, the cellulose-based yarn made thermal graft polymerization reaction Water treatment cleaning and high temperature drying of the washed cellulose based yarn.

Description

Antimicrobial Fiber Manufacturing Method {MANUFACTURING METHOD FOR ANTIBACTERIA FIBER}

The present invention relates to a method for producing antimicrobial fibers, wherein the cellulose-based yarn is antimicrobially processed with a quaternary ammonium acrylic antibacterial solution by graft polymerization reaction using steaming in a reactor of a dyeing apparatus, and thus the durability of washing of the yarn And it relates to an antimicrobial fiber production method that can give an antibacterial function without changing the touch.

Harmful microorganisms parasitic on clothing and skin proliferate in a short time under the environment where they can grow, which lowers the strength of fiber, causes pigmentation and odor, and causes various diseases to the human body. Increasingly, antimicrobial activity has emerged in clothing and textile products. As the living space was sealed, it changed to an environment where mold and various bacteria could easily grow.

The growth of mold and bacteria on the wallpaper or carpet causes damage to textile products, discoloration and odors, and causes various diseases such as atopic dermatitis and allergic asthma. Control of harmful microorganisms in this environment is a very important task in the textile field. Recently, antimicrobial / antimicrobial fiber materials, which have emerged in various fields such as medical fibers, residential fibers, and industrial fibers, exhibit an elongation of about 10% or more per year. Antimicrobial processing is called antimicrobial processing to prevent the development of odors and damage or disease of other textile products by suppressing the growth of microorganisms of fiber products.In the case of killing or having resistance to bacteria as well as fungi Although it is called processing, it is usually used confused.

Various antibacterial agents have been developed and used according to the demands of the times. The most commonly used antimicrobial agents are metals or inorganic particles containing metals, quaternary ammonium salts and organosilicon quaternary ammonium salts. Recently, natural antibacterial agents such as chitin and chitosan have been used. The antimicrobial mechanism is divided into elution type in which the antimicrobial agent is gradually released from the fiber over time, and non-release type in which the antimicrobial agent covalently bonded to the fiber comes into contact with the bacteria to stop the activity of the fungal cell and destroy the cell wall.

     The method of adding antimicrobial function to the fiber includes yarn modification processing method applying antimicrobial agent at the polymer stage of the fiber and post processing processing method applied at the dyeing processing step. If so, it must be processed by the post-treatment method. Even in the post-treatment method, the process of adsorbing the antimicrobial agent on the fiber surface is poor in washing resistance and deteriorates the touch when heat-fixing the antimicrobial agent in the reactive resin. The organosilicon quaternary ammonium salt, a non-release antibacterial agent, has excellent durability due to dealcoholization of the trialkoxy silyl group and the hydroxyl group on the fiber surface, but is difficult to handle and expensive due to the high reactivity of trialkoxy.

     Japanese Patent Application Laid-open No. Hei 10-375300 introduced a polymer compound of acrylic acid and its esters or methacrylic acid and esters or derivatives thereof, which is mixed with an extract extracted from grains and coated on fibers to maintain antimicrobial deodorization for a long time. , Korean Patent No. 473613 discloses a technique comprising chitosan, chitosan modification, carboxylic acid polymer, zinc oxide in the binder resin.

In recent years, a technique of adding an antimicrobial function to fibers using a radiation graft reaction has been proposed. 1 is a view for explaining a fiber antimicrobial process using a graft reaction according to the prior art, a graft polymerization reaction by irradiating the fiber substrate with radiation and immersing the irradiated fibers in an antimicrobial solution mixed with a polymerization initiator To perform. By the way, the conventional radiation graft antibacterial process is too expensive for the initial installation and is not irradiated deep inside the fiber base, so the uniformity of the physical properties is not good, and there is still a need to improve the uniformity of the antibacterial function or the long-term effect. Has emerged.

However, as the product is advanced, the antimicrobial activity is sufficiently maintained for a long time, and the necessity of improving the deodorant is strongly requested. Therefore, the development of a technology for this is required. In order to satisfy this demand, the present inventors have conducted a lot of research. As a result, the quaternary ammonium acryl-based antimicrobial solution of the present invention penetrates into the bobbin wound with cellulose-based thread in the reactor of the dyeing apparatus rather than the textile itself, The present invention has been completed by developing an antimicrobial fiber production apparatus and an antimicrobial fiber production method using the same, which give an antimicrobial function to a cellulose yarn by a graft polymerization reaction.

The antimicrobial fiber production method of the present invention for solving the above problems is a method of antimicrobial treatment of cellulose-based yarn, antibacterial liquid production step of mixing a polymerization initiator, antimicrobial monomer and water, antibacterial to the bobbin wound cellulose-based yarn Antibacterial liquid treatment step of penetrating the liquid, draining and dehydrating the antibacterial liquid penetrated into the reactor and bobbin, heat graft polymerization reaction of the cellulose-based seal by supplying steam into the reactor, thermal graft polymerization reaction Water treatment cleaning the made cellulose based yarn and drying the washed cellulose based yarn at high temperature. Here, the thermal graft polymerization reaction may be performed at 100 to 150 ° C. for 10 to 60 minutes, and washing may be performed at 90 to 100 ° C. for 20 to 120 minutes.

     In addition, the device for producing antimicrobial fiber according to the production method in the present invention is a device for antimicrobial treatment of the cellulose-based yarn, the reactor formed with an antimicrobial inlet and antimicrobial solution inlet mixed with an antimicrobial monomer and a polymerization initiator and water at the bottom Antimicrobial fluid tank consisting of a vertical hollow tube formed in the center of the base to be in communication with the interior of the base, and the base is installed to communicate with the antimicrobial inlet at the top of the antimicrobial inlet, the base is vertically installed to communicate with the inside of the base It consists of a plurality of through-holes formed in the tubular body, a plurality of spindles stacked with a plurality of bobbin wound around the cellulose-based thread, antibacterial liquid circulator to allow the antimicrobial fluid to circulate inside the tank and the reactor, steam in the reactor Steam supply device to supply thermal graft polymerization of cellulose-based seals in a reactor On so as to supply the high-pressure air is installed on the compressor and the reactor connected to the top of the reactor comprises a heat exchange coil for heating or cooling the interior of the reactor.

   In the present invention, the antimicrobial solution is any one selected from peroxides such as organic peroxide initiators, ammonium peroxodisulfate, benzoyl peroxide, and hydrogen peroxide. And 3 to 10% concentration of chloride (3-acrylamidopropyl) trimethyl ammonium chloride or dimethylaminoethyl (meth) acrylate as an antimicrobial monomer, and water may be included as the remainder.

The present invention penetrates the antibacterial solution to the bobbin wound around the cellulose-based thread, causes the graft polymerization reaction using heat to give the antimicrobial function to the cellulose-based yarn, thereby providing the antimicrobial function without changing the washing durability and the touch of the yarn. There is an advantage to this.

In addition, the present invention has the advantage that it is possible to reduce the equipment and production cost by using a general dyeing apparatus without using an expensive radiation graft apparatus.

In addition, the present invention by the antimicrobial treatment using a thermal graft reaction using steam heat, more uniform and efficient graft reaction occurs in and out of the bobbin and can be reused by adjusting the concentration of the drained and dehydrated processing agent There is this.

1 is a view for explaining a fiber antibacterial process using a graft reaction according to the prior art.
2 is a block diagram of an antimicrobial fiber manufacturing apparatus according to the present invention
Figure 3 is a process flow chart showing the antimicrobial fiber manufacturing method of the present invention sequentially.
Figure 4 is a view showing the antimicrobial mechanism of the antimicrobial treatment of the cellulosic yarn by the thermal graft reaction of the present invention.
5 and 6 are FT-IR spectral graph for determining the reactivity of the sample subjected to the antimicrobial processing according to Example 1 of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the present invention is obvious to those skilled in the art.

       First, in order to make the present invention easier to understand, one example of the apparatus of the present invention will be described first, followed by a manufacturing method and the like.

       Figure 2 is a configuration of the antimicrobial fiber manufacturing apparatus according to the present invention, the present invention is for antimicrobial treatment of the cellulose-based thread, the reactor (1), antimicrobial tank (2), a plurality of spindles (3), antibacterial liquid circulator (4), the steam supply device 5, the compressor 6 and the heat exchange coil (9).

Here, the reactor 1 is a body formed with a space therein is formed at the lower end of the antimicrobial inlet 11 and the antimicrobial solution outlet 12 is formed. Here, the antimicrobial solution is a mixture of an antimicrobial monomer, a polymerization initiator and water, and includes a radical reaction initiator containing a peroxy system such as ammonium peroxodisulfate at a concentration of 0.3 to 1.0% as a polymerization initiator, and as the antimicrobial monomer Of (meth) acrylamido alkyl ammonium chlorides or of (meth) acrylates of ammonium chlorides or mixtures thereof, the balance of which includes water.

(R ₁ is hydrogen radical or methyl group,

R _2, R _3, R _4, are independently selected from hydrogen or an alkyl group of C1-C8,

n is an integer from 1-10

X is a halogen group. )

More preferably, it is preferable to use the antimicrobial monomer of the above structural formula at a concentration of 3 to 10%. Examples of the antimicrobial monomers include, but are not limited to, chloride (3-acrylamidopropyl) trimethyl ammonium chloride or dimethylaminoethyl (meth) acrylate. It includes, and contains water as a residual amount.

The antimicrobial tank 2 is installed to communicate with the antimicrobial inlet 11 above the antimicrobial inlet 11 inside the reactor 1 to store the antimicrobial solution introduced from the antimicrobial inlet 11, and includes a base ( 21 and the vertical hollow tube 22. Here, the base 21 is made of a plate formed inside the space so as to communicate with the antimicrobial inlet 11, it is installed horizontally above the antimicrobial inlet (11). In addition, the vertical hollow tube 22 is made of a tubular body formed with a hollow portion so as to communicate with the base 21, it is formed to extend vertically above the central portion of the base 21.

     On the other hand, the antimicrobial solution circulator 4 is to circulate the antimicrobial solution to the antimicrobial solution tank 2 and the reactor 1, and includes an antimicrobial solution circulation pump 41 and a directional valve 42. That is, the antimicrobial liquid inlet 11 is opened using the direction switching valve 42, and the antimicrobial liquid circulation pump 41 is operated while the antimicrobial liquid outlet 12 is closed. Then, after the antimicrobial liquid is pumped into the antimicrobial liquid tank 2, the high pressure is discharged into the reactor 1 through a through hole provided around the spindle 3 while flowing from the lower part of the spindle 3 to the upper part. The discharged antimicrobial solution penetrates into the cellulose-based thread wound on the bobbin (B). On the contrary, when the antimicrobial liquid is filled in the reactor 1, the antimicrobial liquid inlet 11 is closed by using a directional valve 42, and the antimicrobial liquid is discharged by opening the antimicrobial liquid outlet 12. To be possible.

     Compressor (6) is connected to the top of the reactor (1) to supply high pressure air to the reactor (1) to pressurize the reactor (1), the antibacterial liquid drainage inside the reactor (1) and antibacterial penetrated into the cellulose chamber Allow dehydration to proceed smoothly. At this time, a high pressure air control valve 61 for controlling the supply of high pressure air is installed between the reactor 1 and the compressor 6.

      In addition, the steam supply device 5 is connected to one side of the lower end of the reactor 1 to supply steam to the inside of the reactor 1, thereby increasing the antimicrobial treated cellulose-based seal. As a result, a thermal graft polymerization reaction occurs on the surface of the cellulose-based yarn against the antimicrobial monomer, thereby making the cellulose-based yarn antibacterial. At this time, a steam control valve 51 for controlling steam supply is installed between the reactor 1 and the steam supply device 5.

       The heat exchange coil 9 is installed at the lower end of the reactor 1 to heat or cool the inside of the reactor 1, and serves to heat the inside of the reactor 1 during a steaming process or a cleaning process.

     On the other hand, the base 21 may be provided with a plurality of lifting means such as a cylinder for lifting each bobbin stack. That is, by increasing one of the adjacent bobbin (B) laminate, the other one is lowered to form a strong vortex between the bobbin (B) laminate to increase the antibacterial liquid penetration into the bobbin.

    In addition, the present invention provides a pressure exhaust device 8 and a pressure exhaust device 8 and a reactor 1 connected to the reactor 1 so as to reduce the pressure inside the reactor 1 when the pressure inside the reactor 1 increases. It may be further provided with a pressure exhaust control valve 81 provided between.

3 is a process flow chart sequentially showing the antimicrobial fiber manufacturing method of the present invention, hereinafter, the antimicrobial fiber manufacturing method of the present invention will be described with reference to FIGS.

       First, the bobbin B in which the refined cellulose-based thread is wound is laminated on the spindle 3. In general, since natural fibers have a large amount of impurities, the contact area between cellulose and antimicrobial liquid is reduced, so that the reactivity of the water-soluble antimicrobial liquid and yarn can be increased by removing components such as fats and oils with a refiner, and thus, it is preferable to use refined cellulose-based yarn. Do.

      Subsequently, an antimicrobial solution is prepared by mixing a polymerization initiator having a concentration of 0.3 to 1.0%, an antimicrobial monomer having a concentration of 3% to 10%, and a residual amount of water (S10). Here, the polymerization initiator is, for example, an organic peroxide initiator, particularly ammonium peroxodisulfate, benzoyl peroxide, hydrogen peroxide or the like is suitable as an initiator for radical polymerization. In addition, since the amount of the polymerization initiator used affects the graft reaction, it is preferable to adjust the amount so as to be in the range of 0.3% to 1.0%. In other words, if it is less than 0.3%, it is not economical to sufficiently initiate the graft reaction and use 1.0% or more, so that it is adjusted in the range of 0.3% to 1.0%. As the antimicrobial monomer, an acryl or vinyl monomer containing quaternary ammonium may be used. At this time, when the antimicrobial monomer is used at a concentration of less than 3%, there is almost no antimicrobial activity, and if it exceeds 10%, the excess monomer is not polymerized and remains in the fabric, so that it is suitable to be contained at a concentration of 3% to 10%.

       Subsequently, the antibacterial liquid is sprayed at high pressure on the laminated bobbin B, and the cellulose-based yarn is antibacterial (S20). Specifically, by controlling the direction switching valve 42 to open the antimicrobial solution inlet 11 side and drive the antibacterial solution circulation pump 41 so that the produced antibacterial solution is pumped to the antibacterial solution tank (2). The antimicrobial solution is pressurized and introduced into the inside of each spindle (3), the antimicrobial solution is injected under high pressure into the reactor (1) through the through hole (32). The sprayed antimicrobial solution penetrates into the bobbin (B), which causes the cellulose-based thread to be wetted by the antimicrobial solution.

       Next, the antibacterial liquid in the reactor 1 is drained and the antibacterial liquid penetrated into the bobbin B is dehydrated (S30). Specifically, the direction switching valve 42 is controlled to open the antibacterial liquid outlet 12 side, and the high pressure air is supplied into the reactor 1 using the compressor 6. Accordingly, not only the antimicrobial liquid inside the reactor 1 is discharged through the antimicrobial liquid outlet 12, but the antimicrobial liquid penetrated into the bobbin B by the high pressure is dehydrated.

       Subsequently, the steam generated by the steam supply device 5 is supplied into the reactor 1 to perform the heat treatment of the cellulose chamber (S40). At this time, the heat exchange coil (9) is heated during the steaming process to increase the reactor internal temperature to 100 ~ 150 ℃, it is carried out for 10 to 60 minutes. When the cellulose-based yarn is heat treated as described above, a thermal polymerization reaction is performed on the antimicrobial monomers buried in the cellulose-based yarn, thereby obtaining an antimicrobial cellulose-based yarn having no washing durability and a change in touch.

       Next, after evacuating the steam inside the reactor 1 using the pressure exhaust device 8, the cellulose-based seal is subjected to water treatment cleaning (S50). At this time, the water treatment washing is performed at 90 to 100 ° C. for 20 to 120 minutes.

Thereafter, the bobbin B wound around the cellulose-based thread is taken out into the reactor and dried at high temperature using hot air (S60).

       4 is a view showing the antimicrobial principle of the cellulose-based thread antimicrobial treatment by the thermal graft reaction of the present invention, when the microorganism is attached to the cation of the quaternary ammonium molecules bound to the cellulose-based thread of the cell surface of the microorganism The anion sites are electrostatically adsorbed to destroy the cell surface physicochemically, leaking the cell contents and causing the microbes to die.

       The present invention can be carried out by the antimicrobial treatment using a thermal graft reaction using steam heat as described above to allow a uniform and efficient graft reaction to occur inside and outside the bobbin. That is, when graft polymerization is carried out by heating the inside of the reactor while the reactor is filled with the antimicrobial solution, the OH (hydroxyl) reaction of the monomer is more performed with water than the cellulose-based yarn, thereby lowering the polymerization reaction efficiency. In addition, when the graft polymerization reaction is heated by heating the inside of the reactor in a state where the antibacterial liquid is dehydrated, the outside of the bobbin is dried and the inside is in a high humidity state, thereby causing a difference in the graft polymerization reaction inside and outside of the bobbin. Antimicrobial processing becomes uneven. In contrast, the present invention maintains the humidity and temperature inside the reactor uniformly by using steam heat, so that a uniform graft polymerization reaction occurs inside and outside the bobbin, and the OH (hydroxyl group) of the monomer does not react with external water. Therefore, the graft polymerization efficiency of the cellulose-based yarn is also improved.

Antibacterial Test Method

The antimicrobial activity of the towels subjected to antimicrobial treatment by thermal graft reaction was measured as follows.

1) Test bacteria

Staphylococcus aureus ATCC 6538

klebsiella pneumoniae ATCC 4352

2) test piece

The weight of the test piece was 0.4 g and N number was made into 1 pair.

3) Inoculation of test piece

Using a pipette, add 0.2 ml of inoculum (for each sample) to the test

Inoculated.

4) Sampling after constant contact time

After incubation, wash the test piece with neutralizing solution (20ml), shake well, and then

The nutrient solution was diluted with saline. In this case, the contrasting piece is 10, 10, 10 times

The samples were diluted 10, 10, 10 times.

1 ml of each of them was taken and mixed with agar medium and incubated in petri dish.

All. After 24 hours incubation at 37 ℃ colony count to calculate the bacteriostatic reduction rate.

Grafting yield

The amount of antimicrobial agent bound to the fiber by the thermal graft reaction was calculated by the following equation. Yield (%) = (M1-MO) X 100 / M0

Absolute dry weight before reaction: M0

Absolute dry weight after polymerization and washing: M1

250 g of dimethylaminoethyl acrylate as an antimicrobial monomer and 75 g of ammonium peroxo-disulfate as a polymerization initiator were mixed with 4,675 g of water to prepare an antimicrobial solution. The cotton yarn refined by the conventional method was wound and used on the bobbin at the same density as the cheese dyeing so that the antibacterial liquid could penetrate the inside of the fiber sufficiently by the pressure injection. One cone of cotton yarn (1.3 kg) was installed in the reactor 1 of 3 kg scale, and the prepared antibacterial liquid was operated to be sprayed at high pressure from the inside of the bobbin through the spindle for 10 minutes, and then the reactor was opened to leak the filtrate, followed by 10 Dewatering by air spraying into the reactor at atmospheric pressure. In order to keep the temperature inside the reactor 1 at 110 ° C., and to maintain the temperature and humidity inside the reactor 1 uniformly, saturated steam at 110 ° C. may be injected into the reactor 1 by the steam supply device 5. After the steam graft reaction for 30 minutes, the steam inside the reactor 1 was removed, washed with water at 95 ° C. for 20 minutes in the reactor 1, and the cotton yarn was taken out and dried with hot air.

5 and 6 are FT-IR as a spectrum graph to determine the reactivity of the sample subjected to the antimicrobial treatment according to Example 1 of the present invention, Figure 5 is the FT-IR spectrum before the antibacterial treatment, Figure 6 is antibacterial treatment The following is the FT-IR spectrum. 5 and 6, the carbonyl (C = O) peak of the acrylate did not appear before the antimicrobial treatment, but after the antimicrobial treatment acryl reacts with cotton and the carbonyl (C = O) of acrylate at 1720 cm ^-1 . A peak appeared to be observed.

The same procedure as in Example 1 was conducted except that (3-acrylamidopropyl) trimethyl ammonium was used as the antimicrobial monomer. Antimicrobial evaluation was performed and listed in Table 1 or 2. In Table 1 or 2, the control group was used as the towel without the antimicrobial treatment. In order to evaluate the antimicrobial properties according to the present invention, the antimicrobial results of the initial antimicrobial treatment and washing them five times were evaluated. As can be seen from Table 1 or 2, it can be seen that the antimicrobial activity according to the present invention can be maintained without any change even after washing five times.

1) bacteriostatic reduction rate for Staphylococcus aureus

Colony count Viable cell count Bacteriostatic reduction rate Towel (initial)  0 (10)  <20 99% Towel (5 times)  0 (10) <20 98% contrast 211 (10) 422,000

Towel (Initial) Towel (5 Wash) Control

2) bacteriostatic reduction rate for Klebsiella pneumoniae

Colony count Viable cell count Bacteriostatic reduction rate Towel (initial)  0 (10)  <20 99% Towel (5 times)  0 (10)  <20 97% contrast 211 (10) 422,000

 Towel (Initial) Towel (5 Wash) Control

     As a result of measuring the reactivity according to the concentration of the neutralization initiator, by adjusting the amount of the polymerization initiator added in the antimicrobial monomer composition in Example 1 while observing whether the reaction proceeded according to the different diluted concentration, as shown in Table 3 It can be seen that the thermal graft neutralization reaction occurs when the concentration of the initiator is 0.3% or more.

Concentration (% by weight)
Whether carbonyl (C = O) peaks are present
Yield (%)
0.1 X 0.5 0.3 o 2.7 0.5 o 3.5 0.7 o 3.5

      As a result of measuring the reactivity according to the concentration of the antimicrobial solution, by adjusting the amount of the monomer added in the antimicrobial composition in Example 1 while observing the reaction degree according to changing the diluted concentration, when the concentration of the monomer is 3% or more It can be seen that a graft reaction occurred in which a carbonyl (C═O) peak appears.

Concentration (% by weight)

Whether carbonyl (C = O) peaks are present
touch One X o 3 o o 5 o o 7 o △ 10 o X

      As a result of measuring reactivity according to the heating temperature, the antibacterial treatment process except for the change in the heating temperature was performed under the same conditions as in Example 1. In addition, after the antimicrobial solution treatment, the steam was heated for 30 minutes at the heating temperature and the reaction degree was observed after washing the water treatment. As a result, when the heating temperature was 100 ° C or higher, a graft reaction in which carbonyl (C = O) peaks appeared was occurred. have.

Temperature

Whether carbonyl (C = O) peaks are present
Yield (%)          95                X       0.5         100                o       2.7         110                o       3.5         120                  o       3.6

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. Accordingly, the appended claims are intended to cover such modifications or changes as fall within the scope of the invention.

1: reactor 11: antimicrobial inlet
12: antibacterial outlet 2: antibacterial tank
21: base 22: vertical hollow tube
3: spindle 31: vertical hollow part
32: Tong 33: Guide Vane
4: antibacterial fluid circulation device 41: antibacterial fluid circulation pump
42: directional valve 5: steam supply
6: compressor 7: heat exchange coil
8: pressure exhaust

Claims (4)

In the method of antibacterial treatment of cellulose thread,
(A) step of preparing an antimicrobial solution to mix a polymerization initiator, antimicrobial monomer and water;
(B) an antimicrobial solution treatment step of laminating the bobbin wound around the cellulose-based thread on a spindle located inside the reactor, and penetrates the antimicrobial solution;
(C) draining and dehydrating the antibacterial liquid penetrated into the reactor and the bobbin;
(D) supplying steam into the reactor to perform a thermal graft polymerization reaction on the cellulose-based yarn;
(E) water-processing the grafted cellulose-based yarns to be cleaned;
(F) drying the cleaned cellulosic yarn at high temperature;
Antimicrobial fiber manufacturing method comprising a.
The antimicrobial fiber production method according to claim 1, wherein the antimicrobial liquid contains an antimicrobial monomer having a concentration of 3 to 10% by weight, and contains 0.3 to 1.0% by weight of a peroxy radical initiator as residual amount.

(R ₁ is hydrogen radical or methyl group,
R _2, R _3, R _4, are independently selected from hydrogen or an alkyl group of C1-C8,
n is an integer of 1-10 and X is a halogen group. ) The method of claim 1, wherein the steam graft polymerization is performed for 10 to 60 minutes at 100 to 150 ° C, and the cleaning is performed at 90 to 100 ° C for 20 to 120 minutes. The method according to claim 1, wherein the steps (B) to (D) communicate with an antimicrobial inlet at the top of the reactor having an antimicrobial inlet and an antimicrobial inlet mixed with an antimicrobial monomer, a polymerization initiator, and water, and an antimicrobial inlet. Antimicrobial liquid tank consisting of a vertical hollow tube formed vertically in the center of the base to be in communication with the base and the base of the base, vertically installed so as to communicate with the inside of the base on the base and consists of a tubular body formed with a plurality of holes around the cellulose Spindle with bobbin wound around the system thread, Antibacterial circulator for the antibacterial solution to circulate inside the tank and the reactor, Steam supply device for supplying steam to the reactor to thermal graft polymerization of the cellulosic thread, Inside the reactor The van is installed inside the reactor and the compressor connected to the top of the reactor to supply high pressure air to the Antimicrobial fiber production method characterized in that comprising performing in the reactor including the heat exchange coil for heating or cooling the internal group.

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