JP2000064149A - Structure containing fiber for preventing sweat odor and body odor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a structure having high hygroscopic property in addition to functions preventing sweat odor and body odor and suitable for sport clothes, night clothes and interior products by mixing a specific deodorizing crosslinked acrylate-based fiber with an antimicrobial fiber at a prescribed weight %. SOLUTION: This structure such as woven or knitted fabric is obtained by mixing 5-50% deodorizing crosslinked acrylate-based fiber having 10-50 wt.% (per fiber) saturated moisture absorption ratio at 20 deg.C and 65% RH with 5-50% antimicrobial fiber having >=3.5 bacteriostatic activity value, e.g. an acrylic fiber containing 0.1-0.5% metal silver or silver ion, an acrylic fiber containing 0.3-2.0% quaternary ammonium salt or an acrylic fiber containing 0.02-2.0% chitosan.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition containing fibers for preventing sweat odor and body odor generated from the human body.

[0002]

2. Description of the Related Art In recent years, there has been an increasing demand for deodorization of sweat odors and body odors based on a cleanliness consciousness called a cleansing syndrome. Among them, the axillary odor in summer and the damp odor of socks are typical odors, and unpleasant odors are also generated from body parts other than the armpits and feet. It is said that these unpleasant odors are caused by volatile compounds obtained by decomposing secretions such as eccrine sweat glands, apocrine glands, and sebaceous glands by the action of microorganisms on the skin surface. In addition, the odorous components generated by the human body are
It is said to be deeply involved in digestive and respiratory diseases. Examples of volatile compounds include nitrogen-containing compounds such as amine and ammonia, lower fatty acids such as acetic acid, propionic acid, caproic acid, capric acid, and isovaleric acid, and aldehydes such as acetaldehyde. It is emitted as a body odor.

As such deodorant products for sweat odor and body odor, there are sprays and roll-on types in which antiperspirants, deodorants and masking agents are mixed, but they are not persistent. On the other hand, as textile products, deodorant substances adhered and fixed on the fiber surface and activated carbon fibers are known, but the former has problems with durability and texture, and the latter has a certain odor. Is effective, but unsuitable for the clothing field.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a composition containing fibers for preventing sweat odor and body odor generated from the human body.

[0005]

As a result of intensive studies to achieve the above object, the present invention has been completed. That is, the present invention is at least acrylate fiber: 5 to 50% by weight
And an antibacterial fiber having a bacteriostatic activity value of 3.5 or more: a composition containing 5 to 50% by weight of a fiber for preventing sweat odor and body odor. In a preferred embodiment, the acrylate fiber is Odorous cross-linked acrylate fiber, 20 ° C 65%
The saturated moisture absorption rate at RH is 10 to 50% by weight per fiber, and the antibacterial fiber contains metallic silver or silver ions in an amount of 0.1 to 0.
Acrylic fiber or antibacterial fiber containing 5% by weight, acrylic fiber or antibacterial fiber containing 0.3 to 2.0% by weight of quaternary ammonium salt, and chitosan 0.0.
By using the acrylic fiber in an amount of 2 to 2.0% by weight, the object of the invention can be better achieved.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below. The present invention is a composition containing at least 5 to 50% by weight of acrylate fiber and 5 to 50% by weight of antibacterial fiber having a bacteriostatic activity value of 3.5 or more and a fiber for preventing sweat odor and body odor. is there. Therefore, these two kinds of fibers alone, or by adding other fibrous or non-fibrous components other than these two kinds of fibers, the present invention provides the fiber composition having sweat odor and body odor preventing properties. Here, the acrylate fiber is a polymer containing acrylic acid (or its salt) and / or methacrylic acid (or its salt) as essential components, and an H-type carboxyl group and a metal salt-type carboxyl group coexist. It refers to a fiber made of a material (including a material having the same structure as that obtained by copolymerization and / or modification). If the amount of such fibers is less than 5% by weight in the composition, sweat odor and body odor cannot be prevented, and the object of the invention cannot be achieved. In general, acrylate fibers are complicated to manufacture and expensive, and the fiber strength is low although they are obtained. It is inferior in productivity, and the object of the invention is not achieved together with the economical aspect.

The antibacterial fiber has a bacteriostatic activity value of 3.
A value of 5 or more is essential, but the bacteriostatic activity value is based on the unified test method established by the Textile Products New Function Evaluation Council, and Staphylococcus aureus is used as the test strain.
The number of viable bacteria after culturing at 18 ° C. for 18 hours was measured, and the bacteriostatic activity value of the bacterial count B of the standard cloth and the bacterial count C of the sample cloth with respect to the inoculum count A [bacteriostatic activity value = (logB-logA)-( logC-log
A)]. When the bacteriostatic activity value is less than 3.5, not only the proportion of the antibacterial fiber in the composition of the present application becomes high, but also the composition does not suppress the action of the microorganisms on the skin surface and odor is generated, and the acrylate fiber. Even in cooperation with, the ability to eliminate sweat odor and body odor cannot be exerted. If the amount of such fibers is less than 5% by weight, the composition does not suppress the action of microorganisms on the skin surface and emits odor, and the object of the invention cannot be achieved. In addition, antibacterial fibers generally have poor dyeing properties and fastness to sunlight, and are produced through complicated steps, resulting in an increase in cost. Therefore, if the amount exceeds 50% by weight, the object of the invention cannot be achieved due to economical reasons.

Further, the object of the present invention is preferably achieved by adopting a deodorant crosslinked acrylate fiber as the above-mentioned acrylate fiber, but such a deodorant crosslinked acrylate fiber is It is produced by using an acrylic polymer as a starting material, crosslinking treatment, hydrolysis treatment, and further neutralization treatment, and the total amount of carboxyl groups is 2.5 to 8 m.
eq / g, the ratio of the amount of H-type carboxyl groups to the total amount of carboxyl groups is 95 to 30 mol%, and the remaining 5
˜70 mol% is one or more metal salt type selected from K, Na, Ca, Mg and Al, and further 20 ° C. 65% RH
It is preferable that the saturated moisture absorption rate is 10 to 50% by weight based on the weight of the fiber. For clothing applications, Ca is preferable as the metal salt type from the viewpoint of gentleness to the skin.

As the cross-linking agent for producing the deodorant cross-linked acrylate fiber in the present invention, hydrazine, hydroxylamine, alkyldiamine and the like can be used. When hydrazine is used as the cross-linking agent, the amount of increase in nitrogen due to the hydrazine treatment is preferably 1.0 to 8.0% by weight.

A production example of the deodorant crosslinked acrylate fiber in the present invention will be described. The starting acrylic fiber is a fiber formed of an AN polymer containing 40% by weight or more, preferably 50% by weight or more of acrylonitrile (hereinafter referred to as AN), and may be in any form such as short fiber and tow. Of course, in-process products, waste fibers, etc. are preferably used. The AN-based polymer may be either an AN homopolymer or a copolymer of AN and another monomer, and as the other monomer, vinyl halide and vinylidene halide; (meth) acrylic acid ester (note that (meth ) Represents both those with and without the word of meta); sulfonic acid-containing monomers such as methallyl sulfonic acid and p-styrene sulfonic acid, and salts thereof; (meth) acrylic acid, itaconic acid Carboxylic acid group-containing monomers and salts thereof such as acrylamide, styrene,
Other monomers such as vinyl acetate may be mentioned. There is no limitation on the means for producing the starting acrylonitrile fiber, and any known means may be used as appropriate.

As a method for introducing hydrazine crosslinks as crosslinks into the acrylic fiber, an increase in nitrogen content is 1.
It can be used as long as it can be adjusted to 0 to 8.0% by weight, but the starting acrylic fiber is made to have a hydrazine concentration of 3 to 80.
Wt%, preferably 5-40 wt% in aqueous solution, temperature 50
Means for treating at -130 ° C, preferably 85-130 ° C, for 1-8 hours, preferably 1-4 hours is industrially preferable.
Here, the increase of the nitrogen content means the difference between the nitrogen content of the raw material acrylic fiber and the nitrogen content of the hydrazine-crosslinked acrylic fiber.

When the increase in nitrogen content is less than the above lower limit, deodorization of lower fatty acids such as acetic acid, propionic acid, caproic acid, capric acid and isovasic acid, and aldehydes such as formaldehyde and acetaldehyde. Finally, it is difficult to obtain fibers having physical properties that are low in performance and that are practically satisfactory, and when the amount exceeds the upper limit, the amount of carboxyl groups introduced becomes small and the saturated moisture absorption does not sufficiently increase, either of which the object of the invention is sufficiently achieved. It's hard to say. Regarding the condition that the increase of nitrogen content is 1.0 to 8.0% by weight, it is easy to clarify the relationship between the reaction factors such as reaction temperature, concentration and time and the increase of nitrogen content by experiments. Can be decided.
Examples of hydrazine that can be used here include hydrazine hydrate, hydrazine sulfate, hydrazine hydrochloride, hydrazine nitrate, and hydrazine bromate.

By the hydrolysis reaction, the nitrile group remaining without being cross-linked with hydrazine is substantially eliminated, and finally, 2.5 to 8.0 meq / g of all the carboxyl groups and the amide group are left in the balance. As a method of introducing, a means of impregnating an alkaline metal hydroxide, a basic aqueous solution of ammonia or the like, or an aqueous solution of a mineral acid such as nitric acid, sulfuric acid, hydrochloric acid, or a heat treatment in a state where the crosslinked fiber is immersed in the aqueous solution. Is mentioned. The above-mentioned hydrolysis reaction can be carried out simultaneously with the introduction of the cross-linking bond. Here, when the amount of carboxyl group is finally less than the above lower limit,
If the deodorizing ability is exceeded, and if the upper limit is exceeded, the object of the invention is not sufficiently achieved in terms of the processed physical properties of the fiber. Regarding the conditions under which the total amount of carboxyl groups recommended by the present invention is 2.5 to 8.0 meq / g, the relationship between the reaction factors such as reaction temperature, concentration and time and the amount of introduced carboxyl groups is clarified by experiments. By doing, it can be easily determined.

As a method for converting a part of the carboxyl groups thus introduced into a metal salt type, the fiber after hydrolysis is K,
A method of immersing in an aqueous solution of a hydroxide or salt of at least one metal selected from Na, Ca, Mg and Al, followed by washing with water and drying is preferably used.

As a method for adjusting the moisture absorption rate to 10 to 50% by weight per fiber and 30 to 95 mol% of the carboxyl groups to an acid type, when the above-mentioned hydrolysis is carried out with an acid,
A method of adjusting the pH to 4.0 to 9.0 with a hydroxide of at least one metal selected from K, Na, Ca, Mg, and Al is
In the case of alkaline hydrolysis, the pH is adjusted to 4.0 to 9.0 with at least one acid selected from sulfuric acid, hydrochloric acid, nitric acid and phosphoric acid.
Is used to convert a part of the carboxyl group to an acid form. In particular, in the case of introducing a divalent metal salt, after converting a part of the carboxyl group into a salt form of K and Na, one or more kinds selected from nitrates, hydrochlorides and phosphates of Ca, Mg and Al. The method of adding a metal salt to convert a part of the carboxyl groups into a divalent or trivalent metal salt causes the fine structure of the fiber to be treated to be semi-swelled, so that the conversion into the metal salt is uniform even in the inside of the fiber. Since it is performed quickly, it is preferably used.

When the amount of H-type carboxyl groups is less than the above lower limit, the deodorizing ability of nitrogen-containing compounds such as ammonia and amine is small and the deodorizing rate is slow, and when it exceeds the upper limit, acetic acid and propione are used. The deodorizing ability of lower fatty acids such as acids, caproic acid, capric acid, and isovaleric acid is small, and the deodorizing rate becomes slow.

The acrylate fiber is 20 ° C. and 65% R
It is important that the saturated moisture absorption in H is from 10 to 50% by weight per fiber. When the saturated moisture absorption rate at 20 ° C. and 65% RH is less than the above range, the deodorizing property with respect to ammonia, formaldehyde, acetic acid gas and the like having a high affinity for water is lowered, and when the saturated moisture absorbing rate is higher than the above range, the deodorizing property containing the fiber is high. When the composition is exposed to a high-humidity atmosphere, a sticky feeling is generated, which is not preferable.

As the antibacterial fiber used in the present invention, Staphylococcus aureus was used as a test strain, and a sterilized sample cloth was suspended with a broth suspension of the test bacteria by a unified test method defined by the Council for the Evaluation of New Functions of Textile Products. Pour into a closed container at 37 ° C, 18
The viable cell count after the time culture was measured, and the bacteriostatic activity value of the bacterial count B of the standard cloth and the bacterial count C of the sample cloth against the inoculum count A [bacteriostatic activity value =
(LogB-logA)-(logC-logA)] is 3.5 or more antibacterial fiber. As such an antibacterial fiber, metallic silver or silver ion is added in an amount of 0.1 to 0.1.
Acrylic fibers containing 0.5% by weight of quaternary ammonium salt and acrylic fibers containing 0.02 to 2.0% by weight of chitosan are suitable. These antibacterial fibers are disclosed in, for example, JP-A-7-243169, JP-A-10-140418,
It can be manufactured by the manufacturing method described in JP-A-10-168758.

The composition of the present invention includes at least an acrylate fiber: 5 to 50% by weight and a bacteriostatic activity value of 3.
5 or more antibacterial fiber: It is essential to contain 5 to 50% by weight, and if it is less than this range, the function cannot be exhibited. The combined use of other materials is useful for further enhancing the function of the composition. That is, as the other fibers used together in the composition, publicly-used natural fibers, organic fibers, semi-synthetic fibers and synthetic fibers are used, and inorganic fibers, glass fibers and the like may be used depending on the application. The materials that can be used in combination are not limited to fibers, but can be laminated with a film, or embedded in a film to form a structure, such as plastic,
Non-fibrous materials such as rubber may also be used. Examples of particularly preferable other fibers include natural fibers such as wool, cotton, silk, and hemp, synthetic fibers such as vinylon, polyester, polyamide, polyacrylonitrile fiber, or viscose, acetate fiber, and fibrous fiber. Etc.

The appearance of the constituents of the present invention includes threads and yarns.
Fibers (including wrap yarns), filaments, woven fabrics, knitted fabrics, non-woven fabrics, paper-like products, sheet-like products, laminates, cotton-like products (including spherical and lumpy ones), and more. Some have a jacket. As a form of inclusion in the composition, it is substantially evenly distributed by mixing with other materials, and in the case of a structure having a plurality of layers, it is concentrated in any layer (either single or plural). There are those that are made to exist and those that are distributed in a specific ratio in each layer.

The final product using the composition of the present invention is preferably used in various fields related to sweat. For example, underwear, underwear, langerie, pajamas, baby products, girdles, brassieres, socks, tights, leotards, trunks and other clothing items, sweaters, trainers, suits, and sportswear. -For outerwear such as clothing, scarves, handkerchiefs, mufflers, artificial fur, baby products, padding, quilts, pillows, cushions, stuffed animals, stuffed cotton, sheets, blankets, sweat pads, etc. Bedding, bedding, carpet, mat,
Hygiene materials such as plush toys, masks, incontinence shorts, wet tissues, car seats, interior goods such as interiors, toilet covers, toilet mats, toilet articles such as pet toilets,
Gas treatment filter, etc., insoles, slippers, gloves,
Examples include towels, rags, linings for rubber gloves, linings for boots, deodorant materials, supporters, sweat pads, interlinings, and the like.

[0022]

The reason why the composition according to the present invention prevents sweat odor and body odor has not been fully explained yet, but it is generally considered as follows. That is, the antibacterial fiber suppresses the growth of microorganisms and suppresses the decomposition of components contained in secretions such as eccrine sweat glands, apocrine glands, and sebaceous glands, and amines generated by decomposition by microorganisms, and nitrogen-containing compounds such as ammonia. , Acetic acid, propionic acid, caproic acid, capric acid, lower fatty acids such as isovaleic acid, aldehydes such as acetaldehyde, etc. are considered to be deodorized by the acrylate fiber or the deodorant crosslinked acrylate fiber. .

[0023]

The present invention will be described in detail with reference to the following examples. Parts and percentages in the examples are by weight unless otherwise specified.

Production Example 1 of Acrylate Fibers 1 Acrylonitrile copolymer of 80% by weight of acrylonitrile and 20% by weight of acrylic acid was dissolved in dimethylacetamide so that the concentration of the copolymer was 25% by weight to prepare a spinning solution. did. This spinning dope is wet spun in a spinning bath filled with a 30% by weight dimethylacetamide aqueous solution at 40 ° C.,
After drawing 5 times while washing the solvent in boiling water, the drawn yarn has pH = 0.1% by weight in a sodium hydroxide aqueous solution.
As 6.0, a part of carboxylic acid was changed to Na salt. After washing with water, the solution was introduced into a bath filled with a 0.2% calcium nitrate aqueous solution to exchange metal ions. After that, excess calcium nitrate is removed by washing, an oil agent is adhered, and then heated at 150 ° C.
It was dried and densified with a laser. 2.5 kg / cm2
Relaxation heat treatment was performed in the pressure steam of G to obtain a 2-denier acrylate fiber. The total carboxyl group content of the fiber was 2.8 meq / g, and the proportion of Ca-type carboxyl groups in the total carboxyl group content was 45 mol%.

Production Example 2 of Deodorant Crosslinked Acrylate Fiber 2 A spinning dope prepared by dissolving an acrylonitrile polymer of 90% by weight of acrylonitrile and 10% by weight of methyl acrylate in a 45% aqueous solution of rodan soda was spun according to a conventional method, Washing with water,
Stretching, crimping, and heat treatment were performed to obtain 1 denier × 70 mm raw material fiber. To 1 kg of this raw material fiber, 10 kg of a 20 wt% hydrazine aqueous solution was added and subjected to crosslinking treatment at 100 ° C. for 3 hours. The amount of increase in nitrogen was 5.1%. After washing the crosslinked fiber with water, 10 kg of 3% by weight of sodium hydroxide was further added and hydrolyzed at 90 ° C. for 2 hours. Then, after washing with water, the pH was adjusted to 6.5 with sodium hydroxide, 650 g of calcium nitrate was added, and a metal salt treatment was carried out at 60 ° C. for 2 hours. After sufficiently washing with water, dehydration, oil treatment and heat treatment were carried out to obtain an acrylate fiber having a fineness of 2 denier and a length of 50 mm. This fiber has a total carboxyl group content of 5.1 meq
/ G, the proportion of Ca-type carboxyl groups in the total amount of carboxyl groups is 50 mol%, and the saturated moisture absorption measured at 20 ° C. and 65% RH is 20% by weight with respect to the dry fiber, and the deodorant crosslinked acrylate. It is a system fiber.

Production Example 3 of antibacterial fiber Acrylonitrile 91.1% by weight, methyl acrylate 8.6% by weight, sodium methallyl sulfonate 0.3
45% by weight of acrylonitrile-based polymer
A spinning dope which is dissolved in an aqueous solution of water is spun, washed with water, drawn, crimped and heat treated according to a conventional method to give 1.5 denier x 51 m.
m raw material fiber was obtained. The sulfonic acid content in this raw material fiber was 31 mmol / Kg. Silver nitrate 5 mmol /
After adjusting the pH to 3 with 10 kg of an aqueous solution of 1 by using 1% by weight of nitric acid, 1 kg of the raw material fiber was added, treated at 98 ° C. for 30 minutes, and washed with water. Furthermore, sodium oxalate 3 mmol /
10 kg of an aqueous solution was added, the mixture was treated at 98 ° C. for 30 minutes, washed with water and dried to obtain a silver-based antibacterial fiber. The content of metallic silver in the fiber was 31 mmol / Kg, and the bacteriostatic activity value showing antibacterial property was 5.5.

Production Example 4 of antibacterial fiber 4 Acrylonitrile 91.1% by weight, methyl acrylate 8.6% by weight, sodium methallyl sulfonate 0.3
45% by weight of acrylonitrile-based polymer
After spinning, washing, stretching, and drying and densifying the spinning dope, which is dissolved in an aqueous solution of water, according to a conventional method, a pure aqueous solution of stearylamidopropyldimethylhydroxyethylammonium nitrate, which is a quaternary ammonium salt, is added to the running fiber. 0.5 wt% was adhered. After crimping and heat treatment,
A spinning oil was added and dried to obtain a quaternary ammonium salt-based antibacterial fiber of 1.5 denier x 51 mm. The bacteriostatic activity value showing antibacterial properties was 4.8.

Production Example 5 of antibacterial fiber Acrylonitrile 91.1% by weight, methyl acrylate 8.6% by weight, sodium methallyl sulfonate 0.3
45% by weight of acrylonitrile-based polymer
After spinning, washing and stretching a spinning dope dissolved in an aqueous solution of water according to a conventional method, 0.2% by weight of chitosan and 0.1% by weight of acetic acid.
0.1% by weight after being introduced into a bath filled with an aqueous solution and dehydrated
It was neutralized with an aqueous sodium hydroxide solution. Then, after washing excess sodium hydroxide, it is dried and densified, crimped, heat treated, applied with a spinning oil, and dried to 1.5 denier x 51 m.
m chitosan-based antibacterial fiber was obtained. The content of chitosan in the fiber was 0.2% by weight, and the bacteriostatic activity value showing antibacterial property was 5.2.

Example 1 15% by weight of the acrylate-based fiber of Production Example 1, 20% by weight of the silver-based antibacterial fiber of Production Example 3 and 65% by weight of acrylic fiber (Exlan K862-1.5d × 51 mm) were used. Blending, carding, drawing, roving and spinning according to
A meter-count single yarn was spun. Next, using a rubber knitting machine, a rubber knitted fabric was prepared at 14G × 2P, dyed with a cationic dye, and then sewn on a knit shirt. Deodorant property of single odor substance of dyed knitted fabric is 98% ammonia (initial concentration 400p
pm), acetic acid 90.1% (initial concentration 100 ppm), acetaldehyde 81.2% (initial concentration 100 ppm),
Trimethylamine 67.3% (initial concentration 90ppm),
Methyl mercaptan 60.5% (initial concentration 40ppm)
Met. This indicates that various malodorous substances generated by decomposition of sweat are deodorized. The deodorant property is measured by the following method and expressed by the deodorant rate. Sample 1
Put 0g in a tedra bag and seal, 20 ° C 65% R
3 liters of H 2 air were injected, and then a standard gas was injected so as to have an initial concentration. After standing at 20 ° C. for 2 hours, the gas concentration in the tedra bag was measured using a Kitagawa gas detector tube, and the deodorizing rate was calculated according to the following formula. Deodorization rate (%) = [(initial concentration-concentration after 2 hours) / initial concentration] × 100

Example 2 15% by weight of the acrylate fiber of Production Example 2, 20% by weight of the silver antibacterial fiber of Production Example 3 and 65% by weight of acrylic fiber (Exlan K862-1.5d × 51 mm) were used. A knit shirt was produced in the same manner as in 1. Deodorant property of single odor substance of dyed knitted fabric is 100% ammonia
(Initial concentration 400 ppm), Acetic acid 94.2% (Initial concentration 100 ppm), Acetaldehyde 85.8% (Initial concentration 100 ppm), Trimethylamine 75.3% (Initial concentration 90 ppm), Methyl mercaptan 82.5% (Initial concentration 40 ppm) Met.

Next, the knitted shirt thus prepared was handed over to 20 panelists, and compared with a 100% cotton knitted shirt, a usage test for two months in summer was conducted by an anchor system. When the sweat odor strength during wear was evaluated on a scale of 5, 100% cotton
While the shirt was ranked 4 (having a strong sweat odor), the shirt of the present composition was ranked 1 (the sweat odor was not detected). In addition, when undressing and washing the next day, 100 cotton
% Produced a mild odor, whereas the shirt, which is the constituent of the present invention, did not change at all. From this, it is clear that this composition has a high sweat odor suppressing effect. It was also found that the effect of suppressing sweat odor was not reduced even after repeated washing.

Example 3 15% by weight of acrylate type fiber of Production Example 2, 15% by weight of quaternary ammonium salt type antibacterial fiber of Production Example 4 and co-
70% by weight of cotton is blended, carded, kneaded,
Rough spinning and spinning were performed to spin out 20 cotton count single yarns to prepare pile yarns. For the fabric for the ground structure, a roving is made with the same mixing ratio as the pile yarn, and it is made into a core yarn by combining it with the ether polyurethane filament 70d (draft 4.0) in the spinning process. I was there. A pile pile fabric for towels was made by using the core yarn as a warp having a ground structure of 45 yarns / inch and weft yarns having 40 yarns / inch. 5 g of the pile fabric was put in a tedra bag and sealed.
Inject 3 liters of air at 65% RH, then 0.5
1 ml of wt% caproic acid was injected. After standing for 5 hours at 20 ° C., the gas concentration in the tedra bag was measured using a Kitagawa gas detector tube and found to be 0.05 ppm or less.
Similarly, it was 3 ppm when measured with a commercially available 100% cotton towel. After 5 hours, the measurement sample was taken out and smelled. When a 100% cotton towel had a strong odor of caproic acid, the pile fabric did not feel any odor. When the pile woven fabric was processed into a sports towel and used at the time of sports, the sweat absorption was good and there was no sweat odor even when left standing.

Example 4 A pile fabric was produced under the same conditions as in Example 3 except that the chitosan antibacterial fiber of Production Example 5 was used as the antibacterial fiber. Next, as a raw material, polyester fiber (7 denier)
70 mm, type 785 manufactured by Toyobo Co., Ltd. and deodorant cross-linked acrylate fiber (6 denier, 70 mm, total carboxyl group content 5.3) prepared in the same manner as in Production Example 2.
meq / g, the proportion of Ca-type carboxyl groups in the total amount of carboxyl groups is 75 mol%, the saturated moisture absorption rate measured at 20 ° C. and 65% RH is 25% by weight based on the dry fiber), and the chitosan-based antibacterial property of Production Example 5 The fibers are arranged in a sandwich form while measuring the weight on the raw cotton feeding lattice so that the weight ratio of the fibers is 60/20/20%, and the fibers are placed on a 60-inch roller card (Kyowa Machinery Co., Ltd.). It was supplied continuously. Using a needle punching machine (made by Kyowa Machinery Co., Ltd.), a primary needle punching machine 30 was used while stacking 6 layers of card webs with a card web laminating machine (made by Ikegami Machinery Co., Ltd.).
Needle / cm2, secondary needle punching 140 needle / cm
2. A non-woven fabric was produced at a running speed of 2 m / min. The non-woven fabric was sandwiched with a pile fabric for 100% cotton towels, and a quilt cloth was produced with a multi-needle quilt machine (manufactured by Hasima Co., Ltd.). Then, a sweat removing pad was finished using the quilt cloth. When I put a sweat pad on the futon and laid it down, no sweat odor was observed in the futon the next day.

[0034]

The composition of the present invention is characterized in that the composition has a high hygroscopicity in addition to the function of preventing sweat odor and body odor, and works involving a large amount of sweat, sports. The effect of suppressing the sweat odor and body odor at the same time and absorbing moisture to form a refreshing wearing space has a great significance, which is a remarkable effect of the present invention. The composition of the present invention having such excellent advantages is widely used in fields of application such as comfortable clothing, bedding, interior products, daily life materials, and the like.

Claims (5)

[Claims] 1. At least an acrylate fiber: 5 to 5
Antibacterial fiber with 0% by weight and bacteriostatic activity value of 3.5 or more: 5
A composition containing fibers for preventing sweat odor and body odor, which is characterized by containing ˜50% by weight. 2. The acrylate-based fiber is a deodorant cross-linked acrylate-based fiber having a saturated moisture absorption rate at 20 ° C. and 65% RH of 10 to 50% by weight per fiber. Item 1. A composition containing a fiber for preventing sweat odor and body odor according to Item 1. 3. The sweat odor and body odor according to claim 1 or 2, wherein the antibacterial fiber is an acrylic fiber containing 0.1 to 0.5% by weight of metallic silver or silver ions. A composition containing fiber to prevent. 4. The sweat odor and body odor according to claim 1, wherein the antibacterial fiber is an acrylic fiber containing 0.3 to 2.0% by weight of a quaternary ammonium salt. A composition containing fibers. 5. The antibacterial fiber contains chitosan in an amount of 0.02 to 0.02.
It is an acrylic fiber containing 2.0% by weight, and the composition containing the fiber for preventing sweat odor and body odor according to claim 1 or 2.