JP2004124343A - Stocking excellent in comfortability - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pair of stockings having moisture absorption characteristics and warming effect at the time of moisture absorption, sustaining comfortable condition without becoming stuffy, and further having both antibacterial and deodorant effect, and excellent washing durability, frictional electrification voltage and half life. <P>SOLUTION: The pair of stockings comprises at least an elastic yarn containing high moisture absorbing/releasing nature particulate and a synthetic fiber yarn. The stockings show warming effect of ≥7°C/min at the time of moisture absorption and warm absorption at the time of moisture releasing. The stockings have both antibacterial and deodorant effect, and moisture absorption exothermic temperature difference of less than 1°C between before washing and after 10 times washing. <P>COPYRIGHT: (C)2004,JPO

Description

【００４６】
【発明の効果】
本発明によって、吸湿性に優れ、吸湿初期に発熱加温効果があり、発汗停止後の急冷によるべとつき感もない快適性に富んだ洗濯耐久性にも優れたストッキングを提供することが可能となり、加えて、抗菌、消臭能、ペーハー緩衝能等の衛生機能や制電性能も兼ね備えたストッキングの提供が可能となった。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stocking that is excellent in hygroscopicity, has a heating effect when absorbing moisture, and maintains a comfortable state without waste.In addition, it also has an antibacterial and deodorizing effect, is excellent in washing durability, and has a friction band voltage and a half life. Also regarding good stockings.
[0002]
[Prior art]
Since the advent of nylon yarn, stockings have become widespread as clothing that enhances the beauty of women's legs, and the use of pantyhose has further increased their use. Further, with the sophistication of taste, the differentiation of products such as transparent and highly elastic products has been progressed.
As one of them, there is a demand for a support-type stocking having a stronger tightening feeling, and a stocking using spandex and a covering yarn made of nylon yarn has appeared, and is now becoming mainstream. Synthetic filaments are useful for obtaining stockings with high strength, thinness and excellent wear durability, but have a drawback that they lack heat retention in severe cold due to their thinness. Further, it is desired that stuffiness during sweating be improved because of its low hygroscopicity. In addition, this stuffiness leads to an unpleasant smell in the shoes, which is one of the worries of women.
[0003]
Synthetic fibers also have many fibers with excellent hygroscopicity, but generally have low strength and are unsuitable for stocking applications requiring thinness and durability, and nylon or polyester is mainly used for stocking filaments. In particular, nylon has a high official moisture content and high strength among synthetic fibers, so nylon filament yarn is used. However, there are many problems during severe cold or hot weather. There are so-called tights for heavy cold weather, but young women who care about their appearance often complain. Conversely, there are some cases that are not worn when it is extremely hot, but they are worn when they are dissatisfied with emphasis on appearance and tightening feeling.
[0004]
In recent years, there has been an increasing demand for tight-fitting stockings called support types, and composite yarns of elastic yarns such as urethane and nylon have become mainstream. Attempts have been made to use improved hygroscopic nylon yarns (see Patent Documents 1 and 2) and to use hygroscopic polyurethane (see Patent Document 3). Although stockings with improved moisture absorption and release properties and rich comfort have been proposed, they have not been improved to improve moisture absorption heat generation, antibacterial and deodorant effects.
[0005]
The moisture-absorbing heat generation effect is conventionally known for cotton or wool fiber, but is not suitable for women's stockings that are thin and require aesthetics, like the tights described above.
[0006]
In view of these circumstances, a method has been proposed in which moisture-absorbing heat-generating resin particles are fixed to a stocking composed of a composite yarn of nylon and polyurethane elastic yarn with an adhesive resin by post-processing (see Patent Document 4). Is also present in the surface nylon yarn, and there is a problem of stickiness when absorbing moisture, a problem of lack of washing durability, and a problem of hardening of texture.
[0007]
[Patent Document 1]
JP-A-9-228155 (Claim 1 etc.)
[Patent Document 2]
JP-A-9-256278 (claims, etc.)
[Patent Document 3]
JP 2001-98423 A (Claim 1 etc.)
[Patent Document 4]
JP 2001-131802 A (Claim 1 etc.)
[0008]
[Problems to be solved by the invention]
The present invention is intended to solve the above-described problems, and imparts a hygroscopic property to a stocking including at least an elastic yarn and a synthetic fiber, has a heating effect at the time of absorbing moisture, and is comfortable without complaint. The present invention provides a stocking that keeps the condition, and also has a combined antibacterial and deodorizing effect, and also has excellent washing durability.
[0009]
[Means for Solving the Problems]
That is, the present invention has the following configurations.
1. A stocking comprising at least an elastic yarn and a synthetic fiber yarn, exhibits a heating effect of 7 ° C./min or more when absorbing moisture, exhibits a heating effect when releasing moisture, absorbs moisture before washing and after washing 10 times. A stocking having a heat generation temperature difference of less than 1 ° C.
2. The stocking according to the first aspect, which has antibacterial and deodorant properties.
3. The front and back surfaces of the knitted fabric constituting the stocking are mainly covered with synthetic fibers, and the surface of the synthetic fiber is substantially free of high moisture-absorbing and desorbing fine particles. The stocking according to the first or second above, wherein the stocking is contained in an amount of 0.2 to 50% by weight, and the elastic yarn is compounded in an amount of 20% by weight or more of the knitted fabric.
4. The highly hygroscopic fine particles contained in the elastic yarn introduce a crosslinked structure into the acrylonitrile-based polymerization containing 50% by weight or more of acrylonitrile by hydrazine, divinylbenzene or triallyl isocyanate treatment, and the remaining nitrile groups are hydrolyzed to form a salt. 4. The stocking according to any one of the first to third aspects, wherein the stocking is a highly moisture-absorbing and desorbing organic fine particle having a salt-type carboxyl group chemically converted to a carboxyl group of 1.0 mmol / g or more.
5. The stocking according to any one of the first to fourth aspects, wherein the deodorizing rate of ammonia is 70% or more.
6. The stocking according to any one of the first to fifth aspects, wherein the acetic acid has a deodorization rate of 70% or more.
7. The stocking according to any one of the first to sixth aspects, wherein the deodorizing rate of isovaleric acid is 70% or more.
8. The stocking according to any one of the fifth to seventh aspects, wherein the deodorizing rates before and after washing are both 70% or more.
9. The stocking according to any one of the first to eighth aspects, wherein the friction band voltage is 2500 V or less.
10. The stocking according to any one of the first to ninth aspects, wherein the half-life in the antistatic half-life measurement of JIS-L-1094 is 50 seconds or less.
[0010]
The feature of the stocking of the present invention is that it has a moisture absorbing ability, and has a heating and heating effect when absorbing moisture. First, the change in temperature and humidity during wearing of the present invention will be described. The temperature / humidity refers to the temperature / humidity of the air contained in the stitches of the knitted fabric of the stocking, and this change affects comfort. If the body temperature rises due to a stimulus such as exercise during wearing, sweat is released from the skin surface to cool the body temperature, and both the temperature and the humidity of the gas phase containing the knitted fabric rise, and the user feels discomfort. At this time, if the knitted fabric has hygroscopicity, the gas phase humidity can be kept low, and the degree of discomfort can be kept low. The absorbed moisture is released from the fiber surface to the external environment. When heat is generated by heat generation when moisture is absorbed, only the temperature rises while the water content in the gas phase is the same, so that the humidity is relatively reduced, sweating from the skin is promoted, and as a result, the body temperature is kept low. This phenomenon lasts a few minutes until the stockings reach a moisture absorption equilibrium. Eventually, the amount of absorbed moisture and the amount of released moisture reach equilibrium, and the heating effect stops. At this time, the temperature of the stocking decreases and reaches the equilibrium temperature. When exercise is stopped and sweating is stopped, only moisture is released, and the state returns to the initial state.
[0011]
The highly moisture-absorbing and desorbing fine particles used in the stocking of the present invention preferably have a low moisture absorption and desorption rate and a high moisture absorption reaching level as compared with cotton fiber or wool fiber, and as a result, heat generation and heat radiation are mild and long-lasting. In particular, the rate of decrease in the fiber temperature after stopping perspiration is slow, which has the effect of suppressing the feeling of cold after stopping exercise.
[0012]
The inventors examined the heating effect that can be experienced in a wear test when absorbing moisture by changing the concentration of the highly hygroscopic fine particles in the elastic yarn. As a result, it is preferable that the heating capacity is 7 ° C./min or more. I found that. It is more preferably at least 9 ° C./min. It depends on the external environment, and it is desirable that the lower the external temperature, the higher the heating capability.
[0013]
The stocking of the present invention is composed of a composite yarn of an elastic yarn and a synthetic fiber yarn from the viewpoint of thinness, strength, extensibility and elongation recovery property, or an intersection of the composite yarn and a false twisted yarn of the synthetic fiber yarn. It is preferably a knitted fabric. The elastic yarn is preferably an elastic filament, and the synthetic fiber yarn is preferably a synthetic filament. Preferably, the front and back surfaces of the stocking are substantially covered with synthetic filaments. This is to prevent the elastic yarn from coming into direct contact with the skin and to improve the slippage with the skin surface to satisfy the characteristics preferable as a stocking. If both of the composite yarns are filaments, it is preferable to increase the transparency and increase the strength to increase the wearing durability. The synthetic filament is preferably polyester or nylon.
From the viewpoint of moisture absorption and durability, the synthetic filament is more preferably a nylon filament. Practically, the total fineness of the composite yarn is preferably 30 to 80 dtex for the panty portion and 10 to 50 dtex for the leg.
[0014]
The difference between the moisture absorption and heat generation characteristics at the initial stage and after washing 10 times indicates the washing durability, and when it is less than 1 ° C., it means that the moisture absorption and heat generation characteristics that can be experienced even after 10 washings are maintained. Washing in the present invention means washing in accordance with JIS-0217-103 using a standard detergent of the Council for Evaluation of Fibers.
[0015]
The fine particles having high moisture absorption / release properties contained in the elastic yarn according to the present invention may be inorganic fine particles, but are preferably organic fine particles, and more preferably organic fine particles made of a non-biological polymer. Polyacrylic acid-based polymer fine particles, polyvinyl-based polymer fine particles, nylon-based polymer fine particles, and polyurethane-based polymer fine particles can be used as the organic fine particles composed of non-biological polymers. Particularly preferred are polyacrylic acid-based polymer fine particles, and the fine particles introduce a cross-linked structure into an acrylonitrile-based polymer containing acrylonitrile by 50% by weight or more by hydrazine, divinylbenzene or triallyl isocyanurate treatment to remove the remaining nitrile groups. It is particularly preferable that the elastic yarn is one that is chemically converted into a salt-type carboxyl group by hydrolysis and contains organic fine particles having a salt-type carboxyl group of 1.0 mmol / g or more. The salt-type carboxyl group is involved in hygroscopicity, and if it is less than 1.0 mmol / g, the hygroscopicity becomes insufficient, which is not preferable.
Preferably it is 4.0 to 10.0 mmol / g. In addition, an increase in the nitrogen content due to the cross-linking treatment acts on improving antibacterial properties and deodorizing performance.
[0016]
The polyacrylic acid-based polymer fine particles to be added to the elastic yarn according to the present invention have a particle diameter of 20 μm or less, preferably 10 μm or less, more preferably, in order to prevent a decrease in physical properties and improve spinning operability and post-processing passability. It is preferably 5 μm or less, and the content is preferably 0.2 to 50% by weight based on the fiber. If the content is lower than this range, a sufficient effect cannot be obtained, and if the content is higher than the range, problems such as induction of yarn breakage during production of the elastic yarn occur.
[0017]
The elastic yarn containing the organic fine particles having high moisture absorption / desorption properties is preferably contained in an amount of 20% by weight or more of the knitted fabric. Also, the feeling of tightening the stockings is insufficient, which is not preferable. More preferably, it is 25 to 40%. In the case of pantyhose, it is common practice to configure the panty portion and the leg portion with different yarns. There is no problem when both are composed of the same yarn, but when the elastic yarn containing the hygroscopic organic fine particles is used only on one side, the composition ratio of the elastic yarn containing the hygroscopic organic fine particles in the knitted fabric of only that portion is used. As expected.
[0018]
In this way, the knitted fabric that repeatedly acts to absorb and generate moisture and absorb and release moisture according to changes in the environment can be used as appropriate for the panty portion and the leg portion to design a pantyhose suitable for the season and the environment. . For example, by using elastic yarns containing heat-generating and hygroscopic organic fine particles only in the leg part for summer stockings, a cool stocking with a dry feeling can be obtained, and for winter use, it is used for both the panty part and the leg part. This is good.
[0019]
The elastic yarn in the present invention refers to a fiber which is considered to exhibit rubber elasticity behavior according to the conventional wisdom, such as a fiber which can be stretched at least 100% or more and has a recovery rate of 20% or more.
[0020]
The elastic yarn according to the present invention may be a polyurethane elastic yarn. The elastic yarn exhibits particularly excellent elasticity and can be used in a highly stretched state when worn, and the elastic resin film formed on the particle surface becomes thinner, so that the effect of the highly moisture-absorbing and releasing fine particles is remarkably exhibited.
[0021]
As the polyurethane polymer that can be used for the elastic yarn according to the present invention, an intermediate polymer composed of a polyol and an excess mole of a diisocyanate compound at both ends of which is an isocyanate group can be used as a non-polymer such as N, N′-dimethylacetamide and dimethyl sulfoxide. It may be obtained by dissolving in an active organic solvent and reacting a diamine compound.
[0022]
The polyol is not particularly limited, and examples thereof include a polymer diol. Specifically, polyether diols such as polyoxyethylene glycol, polyoxypropylene glycol, polyoxytetramethylene glycol, polyoxypentamethylene glycol and polyoxypropylene tetramethylene glycol, adipic acid, sebacic acid, maleic acid, itaconic acid , One or more dibasic acids such as azelaic acid and malonic acid and ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 2,2-dimethyl-1,3-propanediol, Polyester diol, poly-ε-caprolactone and polyvalerola obtained from one or more glycols such as 4-butanediol, 2,3-butanediol, hexamethylene glycol and diethylene glycol Polylactone diols such as tons, polyesteramide diols, polyether ester diols can be selected from polycarbonate diol.
[0023]
The diisocyanate compound is not particularly limited as long as it is an aliphatic, alicyclic or aromatic diisocyanate compound. For example, methylene-bis (4-phenyl isocyanate), methylene-bis (3-methyl-4-phenyl isocyanate), 1,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, m- and p-phenylene diisocyanate, m- and p-xylylene diisocyanate, methylene-bis (4-cyclohexyl isocyanate), 1,3- and 1,4-cyclohexylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate and the like. .
[0024]
Although the diamine compound as the chain extender is not particularly limited, for example, ethylenediamine, propylenediamine, trimethylenediamine, hexamethylenediamine, 1,2-cyclohexanediamine, 1,3-cyclohexanediamine, 1,4-cyclohexane And diamine and hydrazine.
[0025]
The stocking of the present invention preferably has a feature that at least one deodorizing rate selected from ammonia, acetic acid and isovaleric acid is 70% or more. These components are considered as sweat odor components by the Fiber Evaluation Technology Council of Japan, and if they have the ability to deodorize these components, they are particularly suitable for any of the above three components. However, if it has deodorizing performance, it is easy to regard it as having the performance of deodorizing odor after sweating, and it is expected that this performance is 70% or more. Therefore, if it is less than 70%, its performance is insufficient and it cannot be said that it has deodorizing performance.
Preferably, the deodorizing performance is 85% or more, and more preferably 90% or more.
[0026]
In the stocking of the present invention, it is preferable that at least one deodorizing rate selected from ammonia, acetic acid and isovaleric acid is 70% or more both before and after washing. Conventionally, stockings on the market are mostly post-processed products in which a deodorant component is adhered to the product after the product has been made. Since they are inferior in washing durability, they have initial deodorant performance. Even if it does, its deodorizing performance will deteriorate after washing. Since the elastic yarn preferably employed by the stocking of the present invention is integrated with the fiber on the surface and inside of the fiber, its performance hardly deteriorates even when washed. A more preferable range of the deodorization rate after washing is 80% or more, and further preferably 85% or more.
[0027]
The stocking of the present invention preferably has a friction band voltage of 2500 V or less. When the friction band voltage exceeds 2500 V, the skirt tends to be worn when worn, and when worn in winter with low humidity, discomfort is easily felt. The preferred range is 2000 V or less, and more preferably 1500 V or less.
[0028]
The stocking of the present invention preferably has a half-life of a charged voltage of 50 seconds or less. Similarly to the frictional charged voltage, the half-life of the charged voltage is a parameter for evaluating the easiness of wrapping. If this value is 50 seconds or less, even if static electricity occurs due to rubbing with the left or right outerwear such as a stocking or a skirt. Since the rate of decrease of the charged voltage is high, it is difficult to feel discomfort. If it exceeds 50 seconds, discomfort tends to be felt particularly when worn in winter with low humidity. It is preferably 30 seconds or less, and more preferably 15 seconds or less.
[0029]
Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples.
[0030]
[Measurement of moisture absorption and heat generation]
A part of the stocking (approximately 30 cm) is dried in a tumbler drier at 70 ° C. for 2 hours, then placed in a desiccator containing silica gel, and the temperature of the desiccator is adjusted for 8 hours or more in an environment of 32 ° C. × 70% RH. Thereafter, the sample is taken out of the desiccator in an environment of 32 ° C. × 70% RH, and images are taken with a thermo tracer at intervals of 20 seconds, and the temperature of the stocking surface is measured. The maximum temperature and time are specified from this data, and the heating rate is calculated from the following equation.
Heating rate (° C / min) = {(maximum temperature reached ° C)-(32 ° C)} / time reached (minutes)
The difference in the heat of moisture absorption and heat generation before and after washing 10 times was compared with the highest temperature.
[0031]
[Measurement of antibacterial performance]
The test bacterium was tested as Staphylococcus aureus by the SEK unified test method determined by the Council for Evaluation of Fibers and indicated as a bacteriostatic activity value. When this value was 1.6 or more, it was determined that there was antibacterial performance.
[0032]
[Measurement of deodorant performance]
The measurement was performed in accordance with the equipment evaluation method of the Fiber Evaluation Technology Council. Ammonia and acetic acid were measured according to the detector tube method, and isovaleric acid was measured according to the gas chromatography method.
[0033]
[Friction band voltage]
It conformed to the friction band voltage measurement method of JIS-L-1094.
[0034]
[Half-life]
It was based on the half-life measurement method of JIS-L-1094.
[0035]
Embodiment 1
200 parts of polyoxytetramethylene glycol having a molecular weight of 1800 and 45 parts of methylene-bis (4-phenylisocyanate) were reacted at 80 ° C. for 3 hours to obtain an intermediate polymer having isocyanate groups at both terminals. After cooling the intermediate polymer to 40 ° C, 375 parts of N, N-dimethylacetamide was added and the mixture was cooled to 10 ° C. A diethylamine solution in which 4.0 parts of ethylenediamine and 0.4 part of diethylamine were dissolved in 147.6 parts of N, N-dimethylacetamide was prepared, and the diethylamine solution was added at a stretch to the intermediate polymer solution which was stirred at a high speed. A polyurethane polymer solution of 32.2% by weight and a viscosity of 2500 poise (30 ° C.) was obtained.
[0036]
To the polyurethane polymer solution thus obtained, 4% of n-butylamine / N, N-dimethylhydrazine terminal-blocking polymer, a benzotriazole compound and a hindered phenol compound are added and mixed.
[0037]
Subsequently, an aqueous dispersion of raw material fine particles composed of acrylonitrile, methyl acrylate, sodium p-styrenesulfonate and water was crosslinked with hydrazine and hydrolyzed with NaOH. The average particle size was 0.5 μm (measured with a light scattering photometer). Then, 13% by weight of the organic fine particles having a high hygroscopicity having a swelling degree of 80% were added to and mixed with the polyurethane polymer solution to prepare a spinning solution.
[0038]
After the spinning solution was removed from the spinning solution, the solution was discharged from a die having a hole diameter of 0.5 mm, extruded into a spinning cylinder in which heated air at 235 ° C. was flown, applied with a 5% OWF, and wound up at a speed of 550 m / min. The obtained yarn was subjected to a heat treatment at 40 ° C. for 72 hours to obtain a 22 dtex, 2 fill polyurethane elastic yarn to be subjected to post-processing. The maximum heat value of the obtained polyurethane elastic yarn was 3 ° C., the moisture absorption at 20 ° C. × 65% RH was 4.8%, and the moisture absorption at 20 ° C. × 95% RH was 6.4%.
[0039]
The obtained elastic yarn is a normal drawn yarn of nylon 6 of 8 dtex and 5 filament as the winding yarn, and the core yarn draft at the time of covering is 3.3, the number of lower twists is 2900 times / m, and the number of upper twists is 2450 times. / M, respectively, to produce double covering yarn.
[0040]
The covering yarn was supplied to a 4-port pantyhose knitting machine (4 inches in diameter, 400 knitting needles) and subjected to a series of post-processing such as knitting, presetting, cutting, sewing, dyeing, and final setting to obtain a pantyhose. Table 1 shows the results of evaluating the moisture absorption / heating characteristics, antibacterial performance, deodorizing performance, frictional voltage, and half-life of the charged voltage of this stocking. Using this panty hose, a walking test and a resting posture were repeated twice for 10 minutes each in an environment of 20 ° C. and 65% RH. As a result, all 10 panelists compared with the panty hose obtained in Comparative Example 1. And rated it as comfortable.
[0041]
[Example 2]
A pantyhose was obtained in the same manner as in Example 1, except that the covering yarn obtained in Example 1 and the nylon 6 false twisted yarn of 22 dtex and 6 fill were arranged for each course. Table 1 shows the results of evaluating the moisture absorption / heating characteristics, antibacterial performance, deodorizing performance, frictional voltage, and half-life of the charged voltage of this stocking. Using this pantyhose, a walking test and a resting posture were repeated twice for 10 minutes each in an environment of 20 ° C. and 65% RH. As a result, 10 panelists compared the pantyhose obtained in Comparative Example 1. Up to nine people rated it as comfortable.
[0042]
[Comparative Example 1]
A pantyhose was obtained in exactly the same manner as in Example 1 except that the spinning solution was used without adding the organic particles having high moisture absorption / release properties. Table 1 shows the results of evaluating the moisture absorption / heating characteristics, antibacterial performance, deodorizing performance, frictional voltage, and half-life of the charged voltage of this stocking. Using this panty stocking, a walking test and a resting posture were repeated twice for 10 minutes each in an environment of 20 ° C. and 65% RH. As a result, 10 panelists compared the panty stocking obtained in Example 1. And 10 were rated as uncomfortable.
[0043]
[Comparative Example 2]
A pantyhose was obtained in exactly the same manner as in Example 1, except that 3% by weight of the organic fine particles having high moisture absorption / release properties were added to and mixed with the polyurethane polymer solution to prepare a stock solution for spinning. Table 1 shows the results of evaluating the moisture absorption / heating characteristics, antibacterial performance, deodorizing performance, frictional voltage, and half-life of the charged voltage of this stocking. Using this panty stocking, a walking test and a resting posture were repeated twice for 10 minutes each in an environment of 20 ° C. and 65% RH. As a result, 10 panelists compared the panty stocking obtained in Example 1. Up to eight people were uncomfortable.
[0044]
[Comparative Example 3]
The highly hygroscopic organic fine particles used in Example 1 and the water-based polyurethane (Elastron W-33; manufactured by Daiichi Kogyo Seiyaku Co., Ltd., solid content 30%) used in the pantyhose obtained in Comparative Example 1 and the catalyst (Catacyst 64; (Manufactured by Kogyo Seiyaku Co., Ltd.) was fixed by a pad-dry method using a mixture of 200: 33: 10 so that the organic particles having high hygroscopicity and desorption were 5% by weight. Table 1 shows the results of evaluating the moisture absorption / heating characteristics, antibacterial performance, deodorizing performance, frictional voltage, and half-life of the charged voltage of this stocking. The moisture absorption and heat generation characteristics before washing showed excellent performance, but the performance after 10 times of washing was extremely reduced. When the stockings before washing were subjected to a wearing test in the same manner as in Example 1, three out of ten persons evaluated that they felt sticky during exercise.
[0045]
[Table 1]

[0046]
【The invention's effect】
According to the present invention, it is possible to provide a stocking that is excellent in hygroscopicity, has a heating effect at the initial stage of moisture absorption, and has excellent washing durability that is rich in comfort without stickiness due to rapid cooling after stopping perspiration, In addition, it has become possible to provide stockings that also have sanitary functions such as antibacterial, deodorant and pH buffering functions and antistatic performance.

Claims (10)

A stocking comprising at least an elastic yarn and a synthetic fiber yarn, exhibits a heating effect of 7 ° C./min or more when absorbing moisture, exhibits a heating effect when releasing moisture, absorbs moisture before washing and after washing 10 times. A stocking characterized by a difference in exothermic temperature of less than 1 ° C. The stocking according to claim 1, which has antibacterial and deodorant performance. The front and back surfaces of the knitted fabric constituting the stocking are mainly covered with synthetic fibers, and the surface of the synthetic fiber is substantially free of high moisture absorbing / releasing fine particles. The stocking according to claim 1 or 2, wherein 0.2 to 50% by weight of the elastic knitting is contained, and the elastic yarn is compounded in an amount of 20% by weight or more of the knitted fabric. The highly hygroscopic fine particles contained in the elastic yarn introduce a crosslinked structure into acrylonitrile-based polymerization containing acrylonitrile by 50% by weight or more by hydrazine, divinylbenzene or triallyl isocyanate treatment, and the remaining nitrile groups are hydrolyzed to form a salt. The stocking according to any one of claims 1 to 3, which is a highly moisture-absorbing / desorbing organic fine particle having a salt-type carboxyl group chemically converted to a type-type carboxyl group in an amount of 1.0 mmol / g or more. The stocking according to any one of claims 1 to 4, wherein the deodorizing rate of ammonia is 70% or more. The stocking according to any one of claims 1 to 5, wherein the acetic acid has a deodorization rate of 70% or more. The stocking according to any one of claims 1 to 6, wherein the deodorizing rate of isovaleric acid is 70% or more. The stocking according to any one of claims 5 to 7, wherein the deodorizing rates before and after the washing are both 70% or more. The stocking according to any one of claims 1 to 8, wherein a friction band voltage is 2500 V or less. The stocking according to any one of claims 1 to 9, wherein a half-life in antistatic half-life measurement of JIS-L-1094 is 50 seconds or less.