JP2015190086A - Antimicrobial woven fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new woven fabric which suppresses propagation of a causative microbe and generation of half-dry smell effectively and persistently when dried in a room, and has general characteristics as an antimicrobial woven fabric without losing these suppression effects even when washed.SOLUTION: The antimicrobial woven fabric is an antimicrobially-processed woven fabric and exhibits 2.2 or higher microbiostatic activity value to each of Moraxella catarrhalis, Staphylococcus aureus and Escherichia coli when an antimicrobial property test (quantitative test) of a textile product is conducted according to JIS L1092. When whiteness of the antimicrobial woven fabric is defined as WI, that of a standard woven fabric is defined as WI, and a difference therebetween is defined as DWI, DWI(DWI=WI-WI) is 5.0 or smaller. The antimicrobial woven fabric is obtained by processing an original woven fabric antimicrobially by using: a heavy metal shown by the following formula; and a halogen atom-free organic nitrogen compound like polyhexamethylene guanidine salt or an inorganic oxide.

Description

  The present invention relates to a fabric that can exhibit a particularly excellent antibacterial property against a specific bacterial species while having antibacterial properties required for a normal antibacterial fabric. More specifically, the present invention relates to a fabric that can effectively suppress the generation and proliferation of causative bacteria in a dry-dry odor while having normal antibacterial properties as an antibacterial fabric.

Various kinds of incidental processing have been studied for a long time in order to increase the commercial value of the fabric, and a number of fabrics have been proposed. Among them, the antibacterial fabric has a strong inquiry from users, and many types have been proposed so far.
For example, Patent Document 1 discloses a polyester fiber in which an inorganic antibacterial agent having a specific composition is kneaded into the fiber. When this polyester fiber is used, an excellent antibacterial property against Staphylococcus aureus can be obtained. Therefore, a fabric suitable for a field where antibacterial properties are required, for example, inner, lining and bedding, can be obtained. Can be provided.

In recent years, the use of antibacterial fabrics is not limited to inners, linings, and beddings, but is spreading to various fields. Among them, there is an attempt to use an antibacterial fabric in order to suppress a raw dry odor generated when the laundry is dried in the room (room drying). However, although the fabric described in Patent Document 1 has excellent antibacterial properties, it does not exceed the range of ordinary antibacterial fabrics, and is still insufficient to suppress the dry odor. There is a problem.
Since the dry odor is an unpleasant odor such as a rag odor, several methods for suppressing this odor have been proposed.

  For example, Patent Document 2 proposes a method for suppressing a freshly dried odor by applying an aqueous composition containing a specific organic antibacterial agent to laundry after completion of laundry dehydration. Further, Patent Documents 3 and 4 disclose a raw dry odor inhibitor for identifying a causative bacterium of a raw dry odor and a causative substance generated therefrom, and effectively suppressing the generation of the specified causative substance.

JP 2007-177354 A JP 2009-263812 A JP 2012-183184 A JP 2012-184524 A

  However, the method described in Patent Document 2 is an invention that removes the influence of causative bacteria by bringing an organic antibacterial agent into contact with clothes after washing and dewatering. That is, after preparing the aqueous composition containing the said organic antibacterial agent separately, another process must be added to normal washing | cleaning, and there exists a problem in the point that an effort and expense start.

  The inventions described in Patent Documents 2 and 3 are inventions relating to a raw dry odor inhibitor. If this raw dry odor suppressor is previously applied to a fabric, the raw dry odor can be temporarily suppressed. However, this invention is only an invention that can exert an inhibitory effect on the causative bacteria present in the fabric from the beginning, and when the causative bacteria subsequently grow for some reason, the same suppression is also applied to the increased bacteria. The invention is not effective. Therefore, for example, when the causal bacteria grow due to high humidity in the room and it takes time to dry the room, the desired suppression effect cannot be obtained unless the freshly dried odor suppressor is used again. Furthermore, in the same invention, there is a problem that the raw dry odor inhibitor applied to the clothes is washed away at every washing, and a problem remains in that the suppression effect is not sustainable.

  The present invention eliminates the disadvantages of the prior art as described above, and by suppressing the growth of the causative bacteria themselves, it is possible to effectively and continuously suppress the generation of a fresh odor in any room drying environment. At the same time, it is an object of the present invention to provide a novel fabric that can obtain the inhibitory effect without incorporating a special process at the time of washing, and also has general performance as an antibacterial fabric. .

  As a result of earnest research, the present inventors were excellent not only against Moraxella, which is a causative bacterium of raw dry odor, but also against bacterial species targeted in ordinary antibacterial fabrics such as Staphylococcus aureus and Escherichia coli. In order to exert antibacterial properties, it has been found that it is effective to set the bacteriostatic activity value in all these bacterial species to a predetermined value or more, and the present invention has been made. In addition, the present inventors have further studied, and by suppressing yellowing due to processing, that is, by making the whiteness difference with respect to the reference fabric (fabric before antibacterial processing) within a predetermined range, a fabric having a good appearance can be obtained. I also found. The present invention has been further studied based on these findings and has been completed.

  That is, the present invention is firstly a fabric subjected to antibacterial processing, and has a bacteriostatic activity value against Moraxella, Staphylococcus aureus and Escherichia coli in an antibacterial test (quantitative test) of a textile product based on JIS L1092. Is an antibacterial fabric characterized by being in the range of 2.2 or more.

And, secondly, when the whiteness of the reference fabric was whiteness of fabric and WI was WI _0, antimicrobial both whiteness difference DWI (DWI ₌ WI 0 -WI) is in the range of 5.0 or less A fabric is included as a preferred embodiment.

  According to the fabric of the present invention, the generation and growth of Moraxella, which is a causative bacterium of a raw dry odor, can be effectively suppressed, so that the occurrence of 4-methyl-3-hexenoic acid, which is a causative substance of the raw dry odor, is inevitably generated. Can also be suppressed. In the present invention, the technical idea of suppressing the raw dry odor by suppressing the generation and proliferation of causative bacteria themselves by antibacterial processing is adopted. For this reason, no matter what the room drying environment is, it is possible to suppress the generation of raw dry odor, and it is not necessary to incorporate a special process at the time of washing to obtain the effect, so it is also excellent in terms of saving labor. . Furthermore, the effect lasts for a long time.

  And since the fabric of this invention also has the general antibacterial property which a normal antibacterial fabric has, it can be normally used as an antibacterial fabric.

  In addition, the fabric of the present invention is preferably excellent in whiteness, whereby a fabric having a good appearance can be provided.

  Hereinafter, the present invention will be described in detail.

  The fabric of the present invention is obtained by antibacterial processing of a base fabric.

  Examples of fibers constituting the base fabric include natural fibers such as cotton, hemp, wool, cashmere and silk, regenerated fibers such as viscose rayon, high wet modulus rayon, polynosic, cupra and lyocell, diacetate and triacetate. Semi-synthetic fiber, polyethylene terephthalate, polybutylene terephthalate, cationic dyeable polyester, polyester fiber such as polylactic acid, polyamide fiber such as nylon 6, nylon 66, nylon 11, and acrylic such as polyacrylonitrile, modacryl (registered trademark: Kanecaron) Fiber can be used. In the present invention, these fibers are used alone or in combination.

  The form of the fabric is not particularly limited, and for example, a woven fabric, a knitted fabric, a non-woven fabric and the like can be adopted, but generally a woven fabric and a knitted fabric are preferable. In this case, the woven structure and the knitted structure are not particularly limited, and examples of the woven structure include three original structures such as plain weave, twill weave and satin weave and their changed structures, warp double weave, weft double weave and the like. Heavy tissue and double weave can be used. On the other hand, in the case of a weft knitting structure, a flat knitting (tengu, kanoko knitting, fleece knitting, splicing knitting (bear tengu etc.), jacquard knitting, etc.), rubber knitting (smooth knitting, interlock knitting, Milano rib) Single pique, double pique, ripple, one-sided knitting, one-bag knitting, ponchiroma, etc.), pearl knitting, and the like. In the case of warp knitting organization, single denby, single atlas, single cord, double denby, double atlas, double cord, half tricot, quinds cord, satin, back hair, jacquard, etc. Can be illustrated. The number of layers of the knitted fabric may be a single layer or a multilayer of two or more layers. These knitted and knitted fabrics can be produced by a conventional method, and the basis weight, stretchability, texture and the like may be appropriately adjusted according to the purpose. In addition, pretreatment may be appropriately performed prior to antibacterial processing. For example, dyeing with a fluorescent brightening agent is preferable because whiteness is improved.

  The fabric of the present invention can effectively suppress a fresh odor during washing and drying. It is said that the causative substance of the raw dry odor is mainly in 4-methyl-3-hexenoic acid, and the source (causal bacterium) that generates the causative substance is mainly in Moraxella. Moraxella is a genus of eubacteria classified as Pseudomonas, and is a gram-negative cocci. It is a resident microorganism that exists in the mucous membranes of humans and animals, such as the oral cavity and upper respiratory tract, and is also present in various places in the home. Moraxella bacteria are likely to remain in clothes even after washing, and due to the generation of 4-methyl-3-hexenoic acid, a strong rag-like odor is generated.

  In the fabric of the present invention, by suppressing the generation and proliferation of the causative bacteria themselves, the dry odor can be suppressed. However, the fabric has not only this but also general antibacterial properties possessed by ordinary antibacterial fabrics. . Specifically, in addition to the Moraxella osloensis ATCC 199555, it exhibits predetermined antibacterial properties against Staphylococcus aureus NBRC 12732 and Escherichia coil NBRC 3301. Thereby, general use as an antibacterial fabric is also attained.

In the present invention, an antibacterial test (quantitative test) of a textile product based on the JIS L1902 method is adopted for the antibacterial evaluation. And the bacteriostatic activity value calculated by this test needs to satisfy the range of 2.2 or more in any bacterial species. The bacteriostatic activity value is an index of antibacterial activity, and if this is less than 2.2, it is not possible to suppress the growth of bacteria.
Specifically, it is as follows.

(a formula)
S = (Mb-Ma)-(Mc-Mo)
S: Bacteriostatic activity value Ma: Average value of common logarithm of the number of viable bacteria of 3 specimens immediately after inoculation of test bacteria of standard fabric Mb: Common logarithm of the number of viable bacteria of 3 specimens after 18 hours of culture of standard fabric Average value Mc: Average value of common logarithm of the number of viable bacteria of three samples after 18 hours of culture of the target fabric Mo: Average value of common logarithm of the number of viable bacteria of three samples immediately after inoculation of the test fabric of the target fabric As the standard fabric, those specified in the processing effect evaluation test manual for antibacterial and deodorized processed products are used. In the present invention, the bacteriostatic activity value is calculated for each bacterial species based on the above formula.

  It is possible to make the bacteriostatic activity value in the range of 2.2 or more with respect to all of the above bacterial species by, for example, subjecting the base fabric to antibacterial processing using an organic nitrogen compound as an antibacterial agent. Examples of organic nitrogen compounds include quaternary ammonium salts, organic nitrogen sulfur compounds, and phenyl amide compounds. Among them, polyhexamethylene guanidine salts are preferable, and polyhexamethylene guanidine containing no heavy metals and halogen atoms is particularly preferable. Salts are preferred. Specifically, an organic nitrogen compound having a structure represented by the following chemical formula is preferable.

  In the formula, n is an integer of 1 or more, and A is nitric acid, formic acid, acetic acid, benzoic acid, dehydroacetic acid, propionic acid, gluconic acid, sorbic acid, phosphoric acid, fumaric acid, maleic acid, carbonic acid, sulfuric acid or paratoluenesulfone. It is an acid.

  As those having the structure represented by the above chemical formula, an antibacterial agent “AA-2100KII (trade name)” manufactured by Daiwa Chemical Industry Co., Ltd. is commercially available.

  In addition, in this invention, this bacteriostatic activity value can also be made 2.2 or more by using the antibacterial agent which consists of inorganic oxides. Examples of inorganic oxides include amphoteric metal compounds, basic metal compounds, and acidic metal compounds. Specifically, examples of the amphoteric metal compound include zinc oxide, aluminum oxide, and tin oxide. Examples of the basic metal compound include magnesium oxide and calcium oxide. Examples of the acidic metal compound include titanium dioxide, silicon dioxide, and iron oxide. As an antibacterial agent comprising an inorganic oxide, an antibacterial agent “Amorden NAZ-10 (trade name)” manufactured by Daiwa Chemical Industry Co., Ltd. is commercially available.

  As an antibacterial agent, it is basically preferable to use a commercially available product. Moreover, as a provision amount of an antibacterial agent, the range of 0.05-2.0 mass% is preferable as solid content with respect to 100 mass% of base fabrics. If it is less than 0.05% by mass, sufficient antibacterial properties are difficult to obtain, and if it exceeds 2.0% by mass, the applied amount becomes excessive, which may be disadvantageous in terms of cost.

The fabric of the present invention exhibits excellent antibacterial properties as described above, but is preferably excellent in whiteness from the viewpoint of further improving the appearance. Specifically, when the whiteness of the reference fabric was whiteness of fabric and WI was WI _0, it is preferred that both the whiteness difference DWI (DWI ₌ WI 0 -WI) is in the range of 5.0 or less, 4.0 or less is more preferable. If the whiteness difference exceeds 5.0, a clear color difference can be confirmed visually, which may cause an appearance failure. The reference fabric here refers to a fabric before antibacterial processing, that is, a base fabric to be subjected to antibacterial processing.

  More specifically, the formula for calculating whiteness is as follows.

(a formula)
DWI = WI ₀ −WI
DWI: Whiteness difference WI ₀ : Whiteness of the reference fabric, where WI ₀ = 3.388Z ₀ -3Y ₀
WI: Whiteness of the target fabric, where WI = 3.388Z-3Y
Y _{0, Z 0:} the value Y of the _Y 0, _{Z 0} of tristimulus values in the XYZ color system of the reference fabric, Z: tristimulus values in the XYZ color system of the subject fabric Y, value whiteness difference Z For the measurement, a Macbeth colorimeter “CE-3100 spectrophotometer” is used. Specifically, the measurement is performed under the condition of 2 degrees visual field, D65 light source including specular gloss and UV light.

  In order to set the whiteness difference within a predetermined range, for example, an organic acid may be used in combination during antibacterial processing. By using an organic acid, yellowing derived from antibacterial processing is reduced, and whiteness can be kept good. There are various causes for the yellowing of the fabric, but one is that the antibacterial processing involves heating. That is, the base fabric is yellowed due to heating itself, and the base fabric is yellowed by gas generated by heating. Moreover, yellowing may occur easily due to the characteristics of the antibacterial agent used. In addition, the fact that an aqueous dispersion containing an antibacterial agent often becomes alkaline is also a cause of yellowing. In this regard, if an organic acid is added to an aqueous dispersion containing an antibacterial agent, the influence of heating can be reduced, and at the same time, the liquidity can be made acidic, thereby reducing the yellowing of the fabric. Can do. As the organic acid, for example, citric acid, malic acid, succinic acid and the like can be used, and citric acid is particularly preferable. As an application amount of the organic acid, a range of 0.01 to 0.2% by mass is preferable with respect to 100% by mass of the base fabric. Exceeding may cause excessive addition, which may increase the cost.

Next, the preferable manufacturing method for obtaining the fabric of this invention is demonstrated.
In the production method of the present invention, first, an aqueous dispersion containing an antibacterial agent is prepared. If necessary, the aqueous dispersion may contain other processing agents in addition to the organic acid as long as the object of the present invention is not impaired.

  Examples of other processing agents include softeners and water-absorbing agents. As the softening agent, for example, a silicone softening agent represented by amino-modified silicone can be used. As the water absorbing agent, for example, polyethylene glycol, polyester resin, polyamide resin, polyamine quaternary ammonium salt and the like can be used. The amount of the other processing agent mentioned here is preferably in the range of 0.1 to 10% by mass with respect to 100% by mass of the base fabric. By satisfying this range, if it is a softening agent, it is possible to obtain a texture with excellent soft feeling and less rebound and slime feeling, and if it is a water absorbing agent, it is possible to obtain a texture with little slimy feeling. . A softener and a water absorbing agent may be used in combination.

  In addition, as other processing agents, penetrants composed of surfactants and the like, and glyoxal-based resins as anti-wrinkle agents can be used. In particular, when the base fabric is a composite short fiber material of synthetic fibers and natural fibers, it is preferable to use a non-formalin glyoxal resin in combination with the fabric because the anti-pilling performance of the fabric is improved.

  After preparing the aqueous dispersion, a bath containing this aqueous dispersion is prepared. Then, the base fabric is impregnated in the bath. The impregnation conditions are preferably a temperature of 5 to 80 ° C. and a time of 20 to 40 minutes. As the apparatus for storing the bath, a liquid dyeing machine, a rotary dyeing machine, a Wins dyeing machine, a jigger dyeing machine, and the like can be used, but the invention is not limited thereto.

  Squeeze after impregnation. Mangle is used for squeezing. The squeezing rate may be adjusted so that the application amount of the antibacterial agent and other active ingredients satisfies the above range.

  Dry after squeezing. Drying conditions are preferably a temperature of 80 to 160 ° C. and a time of 1 to 10 minutes. After drying, you may heat-process as needed. The heat treatment conditions are preferably a temperature of 160 to 180 ° C. and a time of 30 to 300 seconds. As a device for performing drying and heat treatment, a tenter, a net dryer or the like can be used.

  The illustrated series of antibacterial processes may be either a batch system or a continuous system. Moreover, as long as the objective of this invention is not impaired, you may add arbitrary incidental processing before and after this antibacterial processing.

  The fabric of the present invention can be obtained by antibacterial processing of the base fabric in this way. Therefore, since the antibacterial agent adheres to the base fabric, generation and growth of the causative bacteria themselves can be suppressed from the root. Moreover, since the adhesion is strong, the effect lasts for a long time. The durability of the effect can be evaluated by measuring antibacterial properties after repeated home washing. Specifically, the bacteriostatic activity value after 10 home washings based on JIS L0217: 1995 103 method becomes an indicator of sustainability, and if this is in the range of 2.2 or more, it can be determined that there is sustainability. If it is less than 2.2, the durability is poor and it tends to be unable to withstand long-term use. The antibacterial processing described above enables the bacteriostatic activity value after 10 washings to fall within a predetermined range.

  As described above, according to the present invention, it is possible to provide a fabric that can effectively and continuously suppress a freshly dried odor regardless of the room drying environment. In the present invention, it is not necessary to incorporate a special process at the time of washing in order to suppress the raw dry odor, and it is not necessary to perform antibacterial processing at every washing. In this respect, labor and cost can be greatly reduced as compared with the prior art.

  The fabric of the present invention has excellent antibacterial properties that are durable as described above, but from the viewpoint of appearance, it is preferable that the fabric is excellent in whiteness. By providing a good-looking fabric, the use of the fabric can be expanded.

  The use of the fabric is not particularly limited. For example, innerwear, uniform wear, sportswear, outdoor wear, men's clothing, women's clothing, work clothes, protective clothing, artificial leather, footwear, bags, curtains, sleeping For example, accessories. In particular, in light of the characteristics of the fabric, it can be said that it is suitable for products that are frequently washed and products that are often wet with rain or sweat.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated in detail, this invention is not limited to these. The bacteriostatic activity value (before washing and after 10 home washings) and the whiteness difference were measured by the method described above.

(Example 1)
Introduced 50th spun yarn made of lentio lyocell fiber (single yarn fineness: 1.5dtex, average fiber length 38mm) and 22dtex1f polyurethane elastic yarn into circular knitting machine with needle density 28G and hook diameter 30 inch The organization of the bear tengu organization was organized. The basis weight of the raw machine was 130 g / m ² . Subsequently, the raw machine was scoured according to a conventional method. Then, after preparing the dyeing liquid of the composition shown in the following prescription 1, the dyeing liquid is put into a normal pressure dyeing machine Swingace (manufactured by Nissen Co., Ltd.) so that the bath ratio becomes 1:30, and at 100 ° C. for 30 minutes. It dye | stained and it was set as the reference | standard fabric.

(Prescription 1)
Hakkor S-200LD (Showa Chemical Industries, Ltd .: fluorescent whitening agent) 1% omf
Acetic acid (48%) 1cc / L

  Next, after preparing an aqueous dispersion having the composition shown in Formula 2 below, a bath made of this aqueous dispersion was impregnated with the reference fabric. Thereafter, the solution was squeezed with a mangle so that the squeezing rate was 100%, and dried at 160 ° C. for 2 minutes using a tenter to obtain an antibacterial fabric. The adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric.

(Prescription 2)
AA-2100KII (Antimicrobial agent manufactured by Daiwa Chemical Industry Co., Ltd .: Cationic organic nitrogen compound active ingredient 12%) 20 g / L
Parasolv 530FQ (Ohara Palladium Chemical Co., Ltd. softener: nonionic specially modified silicone) 20g / L
Apol AQ88 (Softening agent manufactured by Nikka Chemical Co., Ltd .: Hydrophilic group-introduced cationic amino-modified silicone) 10 g / L
Texport SN10 (Nikka Chemical Co., Ltd. penetrant: nonionic surfactant) 2 g / L
Citric acid 0.4g / L

(Example 2)
100th spun yarn consisting of Lyocell fiber (manufactured by Lenzing) (single yarn fineness: 0.9 dtex, average fiber length 34 mm) and a covering yarn in which a nylon monofilament (19 dtex1f) is wound around a polyurethane elastic yarn (22 dtex1f), The machine was introduced into a circular knitting machine with a needle density of 40G and a hook diameter of 33 inches, and a live punch machine was knitted. Subsequently, the raw machine is scoured according to a conventional method to prepare a treatment liquid having the composition shown in the above-mentioned prescription 1, and then the same as in Example 1 using a normal pressure liquid flow dyeing machine (manufactured by Nisaka Manufacturing Co., Ltd.). The fabric was dyed under the following conditions to obtain a reference fabric.

  Thereafter, antibacterial processing was carried out in the same manner as in Example 1 to obtain an antibacterial fabric. The adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric.

(Example 3)
Use an aqueous dispersion having the composition shown in the following prescription 3 in place of the aqueous dispersion having the composition shown in the above-mentioned prescription 2, and change the drying conditions in the antibacterial processing to 150 ° C. × 2 minutes instead of 160 ° C. × 2 minutes. Except for this, the same procedure as in Example 2 was performed to obtain an antibacterial fabric. The adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric.

(Prescription 3)
AA-2100KII (Antimicrobial agent manufactured by Daiwa Chemical Industry Co., Ltd .: Cationic organic nitrogen compound active ingredient 12%) 20 g / L
Sunsofter GA Conc NEW (Softening agent made by Nikka Chemical Co., Ltd .: Special anionic compound) 10g / L
Apol AQ88 (softening agent manufactured by Nikka Chemical Co., Ltd .: hydrophilic amino group-introduced cationic amino-modified silicone) 7.5 g / L
Texport SN10 (Nikka Chemical Co., Ltd. penetrant: nonionic surfactant) 2 g / L
Citric acid 0.4g / L

Example 4
The 50th cotton spun yarn was introduced into a circular knitting machine having a needle density of 24G and a hook diameter of 26 inches to knitting a raw machine of Kanoko structure. Subsequently, the raw machine was scoured and bleached according to a conventional method, dried, and then dyed with the same apparatus and conditions as in Example 2 to obtain a reference fabric.

  Next, after preparing an aqueous dispersion having the composition shown in Formula 4 below, a bath made of this aqueous dispersion was impregnated with the reference fabric. Thereafter, the solution was squeezed with a mangle so that the squeezing rate was 100%, dried using a tenter at 130 ° C. for 2 minutes, and then heat treated at 160 ° C. for 1 minute to obtain an antibacterial fabric. The adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric.

(Prescription 4)
AA-2100KII (Antimicrobial agent manufactured by Daiwa Chemical Industry Co., Ltd .: Cationic organic nitrogen compound active ingredient 12%) 20 g / L
Citric acid 0.4g / L

(Example 5)
A warp yarn with a 167 dtex 48 f polyester processed yarn and a weft yarn with a 334 dtex 96 f polyester processed yarn were arranged, respectively. The density of the green machine was 128 warps / inch and 58 wefts / inch. Subsequently, the raw machine was scoured according to a conventional method, and preset with a tenter at 190 ° C. for 30 seconds. Then, after preparing the dyeing | staining liquid of the composition shown in the following prescription 5, the dyeing | staining liquid was thrown into the liquid flow dyeing machine so that the bath ratio might be set to 1:20, and it dye | stained for 10 minutes at 130 degreeC, and was set as the reference | standard cloth.

(Prescription 5)
Hakkor STR (made by Showa Chemical Co., Ltd .: fluorescent whitening agent) 1% omf
Acetic acid (48%) 0.1cc / L

  Thereafter, antibacterial processing was carried out in the same manner as in Example 4 except that the drawing ratio was 80% and the heat treatment conditions were 170 ° C. × 1 minute to obtain an antibacterial fabric. The adhesion amount of the antibacterial agent was 0.192% by mass with respect to 100% by mass of the base fabric.

(Comparative Examples 1 and 2 and Example 6)
In Formulation 2, except for omitting AA-2100KII (Comparative Example 1), changing the content of AA-2100KII to 1 g / L (Comparative Example 2), or omitting citric acid (Example 6) In the same manner as in Example 1, fabrics were obtained. In Comparative Example 2, the adhesion amount of the antibacterial agent was 0.012% by mass with respect to 100% by mass of the base fabric, and in Example 6, the adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric. there were.

(Comparative Example 3, Example 7)
In Formulation 3, except changing the content of AA-2100KII to 1 g / L (Comparative Example 3) or omitting citric acid (Example 7), the same procedure as in Example 3 was performed to obtain fabrics. . In Comparative Example 3, the adhesion amount of the antibacterial agent was 0.012% by mass with respect to 100% by mass of the base fabric, and in Example 7, the adhesion amount of the antibacterial agent was 0.24% by mass with respect to 100% by mass of the base fabric. there were.

(Comparative Example 4)
A cloth was obtained in the same manner as in Example 4 except that AA-2100KII in the formulation 4 was omitted.

  The evaluation results of the fabric obtained above are shown in Table 1. In the table, “initial” refers to the thing before washing.

  The fabrics according to the examples were able to effectively suppress the generation and growth of Moraxella bacteria. Therefore, the effect of suppressing the raw odor was greatly expected. Moreover, it had general antibacterial properties required for ordinary antibacterial fabrics. Furthermore, since good antibacterial properties were maintained even after 10 washes, the durability, that is, the sustainability of the effect was also excellent.

  On the other hand, when no antibacterial agent was used (Comparative Examples 1 and 4) or when the amount used was extremely small (Comparative Examples 2 and 3), the desired antibacterial properties were not obtained.

Moreover, in Examples 1-5 and Comparative Examples 1-4, yellowing due to processing could be suppressed by using an organic acid in combination, so that the fabric could be finished with good whiteness. On the other hand, in Examples 6 and 7, since the organic acid was not used, a product with good whiteness was not obtained.

Claims (4)

  An antibacterial processed fabric, and the bacteriostatic activity values against Moraxella, Staphylococcus aureus and Escherichia coli are all in the range of 2.2 or more in the antibacterial property test (quantitative test) of textile products based on JIS L1092. An antibacterial fabric characterized by being. When the whiteness of the reference fabric was whiteness of fabric and WI was WI _0, claim both whiteness difference DWI (DWI ₌ WI 0 -WI) is characterized in that in the range of 5.0 or less 1 The antibacterial fabric described.   3. The antibacterial fabric according to claim 1 or 2, which is antibacterial processed using an organic nitrogen compound. The antibacterial fabric according to claim 1 or 2, which is antibacterial processed using an inorganic oxide.