JP2000234266A - Antimicrobial nonwoven fabric and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an antimicrobial nonwoven fabric and to provide a method for producing the nonwoven fabric. SOLUTION: This antimicrobial nonwoven fabric is a nonwoven fabric comprising extrafine synthetic fibers having <=0.5 denier single fiber fineness. The nonwoven fabric contains a pyridine-based antimicrobial agent having 200-700 molecular weight, 0.3-1.4 inorganic organic balance and <=2 μm average particle diameter. The antimicrobial nonwoven fabric is characteristically obtained by immersing a nonwoven fabric in a solution containing the pyridine-based antimicrobial agent and treating the nonwoven fabric under normal pressure or under pressure at 90-160 deg.C or adding a solution containing the pyridine-based antimicrobial agent to a nonwoven fabric by impregnation or spray and subjecting the nonwoven fabric to at least one heat treatment selected from dry heat treatment and wet heat treatment at 130-180 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial nonwoven fabric excellent in industrial washing durability and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, fiber structures provided with antibacterial properties have been widely used for various kinds of clothing, interlining, lining, bedding products, interior products and the like. These fiber structures not only have excellent antibacterial properties, but also have a considerable level of durability in water washing at home due to various contrivances. However, industrial washing durability was insufficient.

On the other hand, in recent years, infection in hospitals due to methicillin-resistant Staphylococcus aureus (hereinafter, MRSA) has become a problem. As a countermeasure, it is necessary to impart antibacterial properties to white coats, covers, sheets, curtains and the like.

[0004] In fabric structures, nonwoven fabrics of suede-like artificial leather, in particular, have a high porosity and tend to be in an environment where bacteria can easily propagate when used for clothing or wall coverings. there were.

[0005]

However, since these hospital fiber structures are usually industrially washed at 60 to 85 ° C. many times, those having sufficient durability are hardly obtained by the prior art. Absent.

[0006] Antibacterial treatment of fibers includes silver, copper,
Alternatively, a method of kneading an inorganic antibacterial agent such as zinc at a spinning stage of a synthetic fiber and a method of post-processing of applying an organic antibacterial agent such as a quaternary ammonium salt by spraying or padding treatment have been adopted. In the case of the former, it is excellent in terms of washing durability, but since it is a kneading method,
It could not be processed into products such as cloth. Further, even when mixed in the spinning solution, the antibacterial agent precipitates as crystals on the surface of the spinneret at the spinning stage, and thus there is a problem in yarn production such as breakage of the yarn. On the other hand, in the latter case, although there is an advantage that a product such as cloth can be subjected to antibacterial processing, it is inferior in terms of antibacterial washing durability.

[0007] In view of the background of the prior art, the present invention provides
It is an object of the present invention to provide an antibacterial fiber structure excellent in industrial washing durability and a method for producing the same.

[0008]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the antibacterial nonwoven fabric of the present invention is a nonwoven fabric made of ultrafine synthetic fibers having a single-fiber fineness of 0.5 denier or less, wherein the nonwoven fabric has a molecular weight of 200 to 700 and an inorganic / organic value = 0. 0.3 to 1.4 and containing a pyridine-based antibacterial agent having an average particle diameter of 2 μm or less. In the liquid containing the agent,
Soak the non-woven fabric, 90-160 ° C under normal pressure or under pressure
Or in a liquid containing the pyridine-based antibacterial agent is applied to the nonwoven fabric by impregnation or spraying, and then at least one selected from dry heat treatment and wet heat treatment at 130 to 180 ° C. It is characterized by performing one kind of heat treatment.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention intensively examines the above-mentioned problem, that is, an antibacterial nonwoven fabric excellent in industrial washing durability, and as a pyridine-based antibacterial agent corresponding to the nonwoven fabric to be treated, has a specific molecular weight and inorganic / nonionic properties. When selecting and using those satisfying the three requirements of the organic value and the average particle size, it was surprisingly found that such problems could be solved at once.

That is, the pyridine antibacterial agent of the present invention comprises:
Molecular weight 200-700, more preferably 300-500
Inorganic / organic value = 0.3-1.4, more preferably 0.5-1.2, even more preferably 0.7-0.9, And an average particle size of 2
A specific antibacterial agent having a size of 1 μm or less, more preferably 1 μm or less, is used.

[0011] Such a specific antibacterial agent, for synthetic fibers,
Strongly adheres or exhausts. If at least one of the above conditions is missing, the antibacterial agent does not firmly adhere to synthetic fibers, and sufficient industrial washing durability cannot be obtained. That is, when the molecular weight is less than 200, it adheres to the synthetic fiber, but the washing durability is low. On the other hand, when the molecular weight exceeds 700, it tends to hardly adhere or exhaust to the synthetic fiber.

Next, the inorganic / organic value referred to in the present invention is defined by Minoru Fujita [Reorganized Chemical Experiments-Organic Chemistry-Kawade Shobo (1971)]. It is a value that is treated as a standard, and one carbon (C) is regarded as organic 20, and the inorganic and organic values of various polar groups are determined as shown in Table 1, and the sum of the inorganic values and the organic value are determined. The value obtained by calculating the sum and taking the ratio of the two.

[0013]

[Table 1]

In this organic concept, for example, the inorganic / organic value of polyethylene terephthalate is calculated to be 0.83
become. The present invention focuses on the affinity between the synthetic fiber and the antibacterial agent based on the value calculated based on the organic concept.

On the other hand, when the inorganic / organic value is less than 0.3, the organic property becomes too strong, and when it exceeds 1.4, the inorganic property becomes too strong. The affinity with the synthetic fiber is reduced, so that it is difficult to adhere to or exhaust the synthetic fiber.

In the present invention, among such antibacterial agents, if the average particle size is more than 2 μm, it is difficult to adhere or exhaust to the synthetic fibers, and particles are settled when formed into a working fluid, It shows a tendency to lack the stability of the liquid.

As such pyridine antibacterial agents, 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, zinc 2-pyridylthiol-1-oxide zinc, di (2-pyridylthiol-1-oxide)
Etc. can be used.

The nonwoven fabric of the present invention is a nonwoven fabric made of ultrafine synthetic fibers having a single yarn fineness of 0.5 denier or less,
Synthetic fibers are not particularly limited, but among them, fibers composed of at least one selected from polyester fibers and polyamide fibers are preferably used. As such polyester fibers, polyethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate and the like are preferably used, and as the third component, isophthalic acid, 5-sulfoisophthalic acid, methoxypolyoxyethylene glycol and the like are copolymerized. Those that have been used can also be used. Further, as the polyamide fiber, nylon 6, nylon 66,
Nylon 610. Nylon 12 and the like are preferably used.

The present invention uses a nonwoven fabric made of ultrafine fibers having a single-fiber fineness of 0.5 denier or less, more preferably 0.3 denier or less. The finer the single fiber fineness, the larger the fiber surface area per unit weight of the fabric. That is, the action of attaching and / or exhausting the antibacterial agent to such synthetic fibers depends on the surface area of the fibers. Therefore, an antibacterial nonwoven fabric having high industrial washing durability can be obtained from fibers having a large surface area of 0.5 denier or less as described above. The same effect can be obtained even when a plurality of types of synthetic fibers or further natural fibers are combined.

When antibacterial properties are taken into consideration, the state in which the antibacterial agent is attached to the fiber surface is most excellent because the frequency of contact with bacteria is high. However, in this state, the antibacterial agent is easily peeled, which is not preferable from the viewpoint of washing durability. On the other hand, when the antibacterial agent is uniformly diffused into the fiber, the antibacterial property is reduced, but the washing durability is improved. From the above, it is considered that the state where the antibacterial agent is distributed in a ring shape near the outer periphery of the inside of the fiber is excellent in both antibacterial properties and washing durability. In the present invention, by changing the processing conditions of the antibacterial fiber structure, the antibacterial agent can be controlled to each state of fiber surface adhesion, fiber internal ring distribution, and fiber internal diffusion.

Next, the method for producing the ultrafine fibers of the present invention is not particularly limited, but the single fiber fineness is 0.1 mm.
Since it is 5 denier or less, a method using sea-island type composite fibers is preferred. As described above, polyester fibers and polyamide fibers are preferable as the island component. In addition, as the polymer used for the sea component, the polymer of the island component is a polymer having a different solubility or degradability with respect to a specific solvent or a decomposer, and the thermoforming temperature range is almost the same, and in the molten state In the time required for spinning, those which do not cause a reaction or interaction between these polymers that hinder spinning are used. For example, polystyrene and its copolymers, polyethylene, polymethyl methacrylates, polyvinyl alcohols, polyamides, polyesters and their copolymers, and the like are used from one or more polymers. The spinning method is
What is necessary is just to spin using a well-known sea-island type pack, a base, etc.

In order to produce a nonwoven fabric from the obtained sea-island type composite fiber, a raw cotton is produced by a conventionally known method through steps such as twining, drawing, crimping, cutting, and spreading. Such raw cotton is formed into a random web or a cross-wrap web by a web opened with a card. The web is laminated as required to obtain a desired weight. The weight of the web varies depending on the application, but is 150 to 2000 g / m ^2.
Is preferable. Next, a fiber entangled nonwoven fabric is formed by performing a fiber entanglement treatment by a known means. A preferred entanglement treatment is a needle punching method or a high-pressure water jet method.
The number and conditions of the needle punches vary depending on the shape of the needle used and the basis weight of the web, but are preferably set in the range of 200 to 2,000 needles / cm ² . Next, the fiber-entangled nonwoven fabric is impregnated with the above-described polyurethane resin solution and solidified. Next, by treating with a non-solvent of the island component and a solvent or decomposer of the sea component, a nonwoven fabric made of ultrafine fibers of 0.5 denier or less can be obtained.

At least one surface of the nonwoven fabric thus obtained may have a raised surface made of ultrafine fibers.
An existing method such as buffing with sandpaper or brushing of a clothing cloth may be adopted as a method of forming the raised hair. Alternatively, a polyurethane resin may be coated on one side and processed to have a nubuck tone or a silver tone.

Next, a method for producing the antibacterial polyester-based nonwoven fabric of the present invention will be described.

That is, first, the nonwoven fabric to be treated is immersed in a liquid containing the above-mentioned antibacterial agent using a liquid dyeing machine or the like, and at normal pressure or under pressure at 90 to 160 ° C. for 10 to 120 minutes, more preferably 120 to 160 minutes. It can be produced by heating in a liquid at 135 ° C. for 20 to 60 minutes. At this time, if necessary, a disperse dye or a dispersible fluorescent brightener may be added to the liquid. Under heating conditions of less than 90 ° C., the antibacterial agent hardly adheres to or exhausts the synthetic fiber. On the other hand, when the temperature exceeds 160 ° C., the effect corresponding to the energy consumption cannot be obtained, and the cost performance is unfavorably deteriorated.

In this method, it is more preferable that after the treatment in a liquid, a tenter or the like is used at 120 to 160 ° C. for 15 seconds to 5 minutes, more preferably at 130 to 150 ° C. for 30 seconds to
A dry heat treatment for 2 minutes can be performed. By such dry heat treatment, the antibacterial agent is diffused from the fiber surface to the inside to be in a state of fiber inner ring distribution, and the washing durability can be improved without impairing the antibacterial property. Under the heating condition below 120 ° C., the effect of the dry heat treatment does not appear. 160 ° C
In the case where the above conditions are exceeded, the yellowing and embrittlement of the fiber material and the sublimation of the dye are promoted, and the color fastness is deteriorated. By changing the treatment conditions, the antibacterial agent can be controlled to adhere to the fiber surface, be distributed in a ring shape inside the fiber, and diffused inside the fiber.

Another production method is to impregnate a nonwoven fabric with a liquid containing an antibacterial agent in a padding bath or the like and then use a tenter or the like at 130 to 180 ° C. for 30 seconds to 10 minutes, more preferably at 140 to 170 ° C. for 2 to 10 minutes. It can be manufactured by performing at least one kind of heat treatment selected from dry heat treatment and wet heat treatment for 5 minutes. Under heating conditions of less than 130 ° C., the antibacterial agent hardly adheres to fibers or hardly exhausts. On the other hand, when the temperature exceeds 180 ° C., yellowing and embrittlement of the nonwoven fabric material, and further, sublimation or thermal decomposition of the dye and increase in energy consumption are not preferred.

[0028]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. The percentages and parts in the examples are on a weight basis unless otherwise specified. The quality evaluation in the examples was performed according to the following method. (1) Washing method Using a drum dyeing machine, Kao Corporation detergent "Zab" 2 g /
1, hydrogen peroxide solution (35% industrial use) 3 cc / l, sodium percarbonate 1.5 g / l, temperature 85 ± 2 ° C., bath ratio 1: 2
After washing at 0 for 15 minutes, and after drainage and dehydration, overflow washing was performed for 10 minutes. After washing with water, it was dried for 20 minutes using a tumbler dryer. This was one wash. (2) Antibacterial test method The bacterial cell count was used as the test method, and MRSA clinical isolates were used as test cells. The test was performed by pouring a bouillon suspension of the test bacterium into a sterile sample cloth, and heating at 37 ° C in a closed container.
After 8 hours of culture, the number of viable cells was counted, and the number of cells relative to the number of cultured cells was determined.

Under the condition of log (B / A)> 1.5,
g (B / C) was defined as the difference in the number of bacteria, and 2.2 or more was regarded as a pass level.

Here, A is the number of bacteria recovered and dispersed immediately after inoculation of the unprocessed product, B is the number of bacteria recovered and recovered after 18 hours of culturing of the unprocessed product, and C is the number of bacteria recovered and recovered after culturing the processed product for 18 hours. Represent. (3) Distribution of antimicrobial agent inside fiber X-ray microanalyzer (EMAX-2 manufactured by Horiba, Ltd.)
000) to analyze the fiber cross-section, paying attention to specific elements contained in the antibacterial agent, for example, sulfur, etc.
The state of distribution of the antibacterial agent inside the fiber was evaluated. Examples 1 to 9 and Comparative Examples 1 to 5 First, the antimicrobial agents used in Examples and Comparative Examples are subjected to a colloidal treatment. That is, 50 g of the antibacterial agent used in each of the following examples, 20 g of a formalin condensate of naphthalenesulfonic acid, and 30 g of sodium ligninsulfonate were used.
g was slurried together with 300 g of water, and then subjected to wet pulverization using glass beads to obtain a colloidal composition having an average particle size of 1 μm. Example 1 A sea-island type polymer array fiber of polyethylene / terephthalate as an island component and polystyrene as a sea component having an island / sea component ratio of 50/50, a thickness of 9.0 denier and 36 islands was melt-spun and then plied. Thus, an undrawn tow was produced. The unstretched tow was stretched 3.0 times in a liquid bath at 80 ° C., and passed through a crimper to give a crimp of 13 threads / inch. Thereafter, a silicone-based oil agent was applied, dried, and cut to a cut length of 51 mm to prepare raw cotton. This raw cotton card,
Make a web through the cross wrapper and add 35
A needle punch of 00 needles / cm ² was performed to produce a nonwoven fabric sheet. The basis weight of this nonwoven fabric sheet is 604 g /
cm ² and an apparent density of 0.422 g / cm ³ . Next, this nonwoven fabric sheet was passed through a hot water bath at 90 ° C. of a 12% aqueous solution of a 15% partially saponified polyvinyl alcohol for 3 minutes, and simultaneously subjected to heat shrinkage and gluing, followed by drying. Next, polystyrene as a sea component was extracted and removed in a trichlorne bath and dried.

Next, 25 of polyether polyurethane is used.
A nonwoven fabric sheet is impregnated with an impregnating solution consisting of 54% by weight of a DMF solution and 46% by weight of DMF, and then impregnated with 20% DMF
Coagulation by immersion in aqueous solution, then DMF in hot water
Was removed, washed and dried.

After that, the obtained sheet was sliced into two sheets, and a buffing machine using a sandpaper was used to form nap on both the non-sliced surface and the sliced surface.

Next, in order to impart antibacterial properties, a high-pressure liquid jet dyeing machine was used, and the bath ratio was set to 1:15.
1% owf of the antibacterial agent 2-pyridylthiol-1-oxide zinc formed into a colloid, 0.5% owf of a disperse dye, and a dyeing aid were added thereto.
The treatment was carried out according to a conventional dyeing process under the conditions of minutes. After the treatment, the product was washed with water and dried to obtain a light gray suede antibacterial artificial leather having a basis weight of 218 g / m ² and an apparent density of 0.251 g / cm ³ .

At this time, the fineness of the single yarn was 0.04 denier, and the amount of the attached polyurethane was 35% by weight. At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber.

As a result of finishing the obtained artificial leather on a shirt and wearing it, the smell of sweat was hardly detected as compared with the conventional product. In addition, as a result of using it as a wall covering material on the wall around the water at home, there is almost no occurrence of mold compared to conventional products,
Did not smell. Example 2 Using the same nonwoven fabric as in Example 1, employing the same processing method and conditions, only the above-mentioned colloidal antibacterial agent was 2-chloro-4-
Processed using trichloromethyl-6- (2-furylmethoxy) pyridine. At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber. Example 3 Using the same nonwoven fabric as in Example 1 and employing the same processing method and conditions, only the above-mentioned colloidal antibacterial agent was 2-chloro-6-
Processed using trichloromethylpyridine. At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber. Example 4 A sea-island type polymer array fiber of polyethylene / terephthalate as an island component and polystyrene as a sea component having an island / sea component ratio of 50/50, a thickness of 15.0 denier, and 16 islands was melt-spun and then plied. Thus, an undrawn tow was produced. Thereafter, the same processing method and conditions as in Example 1 were employed. The finished product was a light gray suede antibacterial artificial leather with a basis weight of 198 g / m ² and an apparent density of 0.238 g / cm ³ . The fineness of the single yarn at that time was 0.16 denier, and the amount of the attached polyurethane was 33% by weight.
At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber.

The resulting artificial leather was used for the sofa lining and the door lining of a private car, and was used for half a year. Example 5 Using a finished buffed product before dyeing prepared under the same conditions as in Example 1, and using the same dye as in Example 1 without an antibacterial agent, dyeing was performed under the same conditions. In order to impart antibacterial properties to the dyed nonwoven fabric,
The nonwoven fabric was immersed in a solution prepared by adjusting the antibacterial agent used in Example 1 to 15 g / L, squeezed with a mangle at a squeezing ratio of 70%, dried at 100 ° C. for 4 minutes with a tenter, and then dried at 160 ° C. for 3 minutes. Heated for minutes. At this time, a part of the antibacterial agent adhered to the fiber surface, and most of the antibacterial agent was distributed in a ring shape in the outer layer inside the fiber. Example 6 After squeezing the antibacterial agent of Example 5, it was dried at 100 ° C. for 4 minutes with a tenter, and then subjected to a wet heat treatment at 150 ° C. for 3 minutes using a high-temperature steam setter (HTS). The distribution of the antibacterial agent at this time was almost the same as in Example 5. Example 7 Using the finished dyed product of Example 5, a solution prepared by adjusting the antibacterial agent used in Example 1 to 15 g / L was applied uniformly to the surface by spraying at 100 g / m ² . Then 100 ° C with a tenter
For 4 minutes, and then heated at 160 ° C. for 3 minutes. The distribution of the antibacterial agent at this time was almost the same as in Example 5. Example 8 The nylon component of the nonwoven fabric sheet used in Example 1 was not nylon but 6 nylon. In the step of dyeing and antibacterial processing, the same antibacterial agent as in Example 1 was used, and the dye was treated at 95 ° C. for 45 minutes using a brown 1: 2 type metal-containing complex dye. Otherwise, the same formulation as in Example 1 was employed. 180 g / basis weight of completed nonwoven sheet
A suede-like artificial leather having m ² , an apparent density of 0.265 g / cm ³ and an adhesion amount of polyurethane of 35% by weight was obtained. At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber.

As a result of finishing the finished artificial leather on sports shoes, the foot odor was hardly smelled as compared with the conventional product. Example 9 Using the same nonwoven fabric and the same processing method and conditions as in Example 8, only the above-mentioned colloidal antibacterial agent was 2-chloro-4-
Processed using trichloromethyl-6- (2-furylmethoxy) pyridine. At this time, the antibacterial agent was completely distributed in a ring shape in the outer layer inside the fiber.

As a result of finishing the finished artificial leather on a bag, as a result, there was almost no generation of mold and no smell compared with the conventional product. Comparative Example 1 Processing was performed under the same conditions as in Example 1 except that 2- (2-furyl) -1H-benzimidazole was used as an antibacterial agent. Comparative Example 2 Processing was performed under the same conditions as in Example 1 except that 1,4- (1-diiodomethylsulfonyl) benzene was used as an antibacterial agent. Comparative Example 3 Processing was performed under the same conditions as in Example 1 except that 10,10′-oxybisphenoxyarsine was used as an antibacterial agent. Comparative Example 4 Processing was performed under the same conditions as in Example 5, except that 5-chloro-2-methyl-4-isothiazolin-3-one was used as an antibacterial agent. Comparative Example 5 Processing was performed under the same conditions as in Example 5 except that the heat treatment after drying at 100 ° C was performed at 120 ° C for 10 minutes.

The antibacterial properties (MRS) before washing and after 10 times of industrial washing were measured for a total of 14 points of 9 points in Example and 5 points in Comparative Example.
A) was evaluated. Table 2 shows the results.

[0040]

[Table 2]

As is clear from Table 2, Examples 1 to 9 have sufficient antibacterial properties before washing and after 10 times of industrial washing. On the other hand, in Comparative Examples 1 to 5, some antibacterial effects were observed before washing, but no effect was observed after 10 times of industrial washing.

[0042]

According to the present invention, clothing, seat materials such as chairs, sofas and vehicle seats, wall materials such as indoor walls and furniture, interior materials such as automobiles and trains, and bags and shoes are provided. And the like that can be used widely and preferably.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) // D06M 101: 32 101: 34 F term (Reference) 4H011 AA02 BB09 BB18 BC19 DA07 DC10 DC11 DH04 DH05 DH06 4L033 AA07 AA08 AB01 AB07 AC10 BA57 BA94 BA96 CA50 CA59 4L047 AA21 AA23 AA25 AA27 AA29 AB02 AB07 AB08 BA03 CA19 CB10 CC01 CC03 CC08 CC09 DA00

Claims (11)

[Claims] 1. A non-woven fabric comprising ultrafine synthetic fibers having a single-fiber fineness of 0.5 denier or less, wherein the non-woven fabric has a molecular weight of 200 to 700 and an inorganic / organic value of 0.3 to 0.3.
An antibacterial nonwoven fabric having a range of 1.4 and containing a pyridine antibacterial agent having an average particle size of 2 μm or less. 2. The method according to claim 2, wherein the pyridine antibacterial agent is 2-chloro-6-.
Trichloromethylpyridine, 2-chloro-4-trichloromethyl-6-methoxypyridine, 2-chloro-4-trichloromethyl-6- (2-furylmethoxy) pyridine, di (4-chlorophenyl) pyridylmethanol,
Being at least one selected from 2,3,5-trichloro-4- (n-propylsulfonyl) pyridine, zinc 2-pyridylthiol-1-oxide, and di (2-pyridylthiol-1-oxide). The antibacterial nonwoven fabric according to claim 1, characterized in that: 3. The antibacterial nonwoven fabric according to claim 1, wherein the pyridine antibacterial agent is zinc 2-pyridylthiol-1-oxide. 4. The antibacterial nonwoven fabric according to claim 1, wherein the antibacterial agent is attached to the nonwoven fabric. 5. The antibacterial nonwoven fabric according to claim 1, wherein the antibacterial agent is exhausted by constituent fibers of the nonwoven fabric. 6. The antibacterial nonwoven fabric according to claim 1, wherein said synthetic fiber is a fiber composed of at least one selected from polyester and polyamide. 7. The antibacterial nonwoven fabric according to claim 1, wherein the antibacterial agent is distributed in a ring shape inside the synthetic fiber. 8. The antibacterial nonwoven fabric according to claim 1, wherein the nonwoven fabric contains 10% by weight or more of a polyurethane resin. 9. The non-woven fabric according to claim 1, wherein the non-woven fabric is a garment, a sheet material, a wall covering material,
The nonwoven fabric according to any one of claims 1 to 8, wherein the nonwoven fabric is used for any use selected from interior materials for cars, bags, and shoes. 10. A nonwoven fabric in a liquid containing a pyridine antibacterial agent having a molecular weight of 200 to 700, an inorganic / organic value in the range of 0.3 to 1.4, and an average particle size of 2 μm or less. A method for producing an antibacterial nonwoven fabric, characterized by immersing in water and treating in a liquid at 90 to 160 ° C. under normal pressure or pressure. 11. A method of padding a liquid containing a pyridine antibacterial agent having a molecular weight of 200 to 700, an inorganic / organic value of 0.3 to 1.4, and an average particle size of 2 μm or less into a nonwoven fabric by impregnation or Or, after applying by spraying, 13
A method for producing an antibacterial nonwoven fabric, comprising performing at least one kind of heat treatment selected from dry heat treatment and wet heat treatment at a temperature of 0 to 180 ° C.