JP2002105705A - Panty hose giving comfortable wear sensation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stocking that has largely improved wearing comfortableness, for example, stuffiness, surface tackiness, smoothness, dryness and the like without the adverse effect on the clearness, moderate compression, aesthetic properties and functionality of the conventional stockings, can be produced in an industrial scale. SOLUTION: In this stocking at least a part of the fiber constituting the stocking has the following high moisture-absorbing and -releasing organic fine particles with an average particle size of <=5 μm on the fiber in an amount of 1-20 wt.% and the resultant stocking has the excellent wear comfortableness and satisfies the following relational expression: High moisture-absorbing and releasing exothermic organic fine particles: a polymer, for example, carboxyl groups or their metal salt are introduced into a polymer, for example, polyacrylonitrile or polyacrylic ester and cross-linked with divinylbenzene; ΔH=H1-H0>1 in % wherein H1: the coefficient of moisture absorption on the mat side at 32 deg.C and 65% RH in the case where the high moisture- absorbing and releasing organic particles are held on the stocking fiber; H0: the coefficient of moisture absorption on the mat side at 32 deg.C and 65% RH in the case where the high moisture-absorbing and releasing organic particles are not held on the stocking fiber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in stockings, and more particularly to a stocking with improved wearing comfort and antibacterial properties.

[0002]

2. Description of the Related Art Women's stockings have changed greatly with the pantyhose that appeared in the 1970s. From the conventional pantyhose using false twisted nylon yarn, a support type pantyhose using a covering elastic yarn in which a polyurethane elastic yarn is covered with a polyamide long fiber has become the mainstream at present. For support type pantyhose,
There are a type manufactured by cross-knitting the covering elastic yarn and the polyamide long fiber yarn, and a type knitted only with the covering elastic yarn. Each of these has a characteristic and seems to be selected according to the user's preference. Both types have high reputation in the market for their high fit and high durability. However, the covering elastic yarn used in each type is formed by winding a polyamide long fiber around a relatively thick polyurethane elastic yarn, and the stocking after knitting tends to be thick. For this reason, the wearing comfort such as stuffiness and touch during wearing is insufficient, and recently the detachment of the stocking has been caused as called raw feet.

In order to solve this problem, the cross-sectional shape of the polyamide long fiber is made triangular or L-shaped, and fine grooves are formed on the side surface. However, in these, although the transfer of liquid sweat is improved, there is no effect on the moisture absorption / release properties of water vapor. For this reason, some proposals have been made to use copper-anhydrous silk long fibers having a hygroscopic property for covering, but on the contrary there is a drawback that the yarn becomes thicker, the air permeability is reduced, and the transparency is impaired. For this reason, it has been proposed to modify the polyamide polymer itself to impart hygroscopicity to the yarn (JP-A-7-150414, JP-A-9-268433).
No.). According to this method, the hygroscopicity of the polyamide filament itself is improved, but the added polyvinylpyrrolidone has a slimy surface and is far from a slaty touch. Further, since the elastic yarn side is not improved, the stocking made of only the covering elastic yarn has a disadvantage that the effect is reduced. On the other hand, there is a proposal to fix squalane, squalene, or the like to a stocking with a resin such as urethane as disclosed in JP-A-11-81001.
However, squalane and squalene did not provide sufficient moisture absorption / desorption properties, but rather had a moisturizing effect, and did not improve stuffiness or sliminess. Therefore, the present inventors have paid attention to fine particles having high moisture absorption / release and heat generation, and added the present particles to a resin, and adhered to the stockings, so that the conventional stockings have a sense of clarity, moderate pressure, Without impairing the aesthetics and functionality, such as fit,
Although it was previously proposed to significantly improve the wearing comfort such as stuffiness, stickiness, slimy feeling, and slat feeling, the stockings have a drawback that coloring occurs, and applications where coloring is a problem, such as pale When used for toning stockings,
There was a drawback that aesthetics were poor.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention has no problem of coloring and has a moist feeling without impairing the aesthetics and functionality of the conventional stockings such as transparency, moderate pressure and fit. It is intended to provide a stocking which can greatly improve the wearing comfort such as stickiness, slimy feeling and salat feeling, and which can be industrially produced and has excellent wearing comfort.

[0005]

The present invention has the following configuration to solve the above problems. That is, the present invention provides: 1. a stocking having 1 to 20% by weight, based on the fiber weight, of the following highly hygroscopic organic fine particles having an average particle size of 5 μm or less on at least some of the fibers constituting the stocking;
A stocking excellent in wearing comfort, wherein the stocking satisfies the following relational expression. High moisture-absorbing and moisture-absorbing heat-generating organic fine particles: polystyrene, polyacrylonitrile, polyacrylester, polymethacrylic ester-based polymer, sulfonic acid group, carboxylic acid group, phosphoric acid group or their metal It has a salt introduced and is crosslinked with either divinylbenzene or triallyl isocyanate. ΔH = H 1 −H 0 ≧ 5 (%) H 1: Moisture difference (%) of stockings with high moisture absorption / desorption organic fine particles H 0: Moisture difference of stockings without high moisture absorption / desorption organic fine particles (%) ) Moisture percentage difference (%) = RH (95) -RH (65) RH (95): Moisture percentage (%) of stocking at 20 ° C., 95% RH RH (20): 20 ° C., 65% RH Moisture percentage of stockings (%)

2. The stocking with excellent wearing comfort according to 1 above, wherein the high moisture absorption / desorption organic fine particles have an initial moisture absorption rate of 0.8% / min or more. 3. Moisture content (20 ° C, 65% RH) after 5 washing treatments is 5
The stocking having excellent wearing comfort according to any one of the above items 1 to 2, which is not less than 1%. 4. The above-mentioned item 1, wherein the difference in moisture content after washing treatment of the stockings in which the organic particles having high moisture absorption / release properties are fixed on the fibers is 5% or more.
A stocking with excellent wearing comfort according to any one of the above-mentioned items. 5. The wearing comfort according to any one of the above items 1 to 4, wherein the adhesive for fixing the highly moisture-absorbing and desorbing organic fine particles on the fibers constituting the stocking has a water content of 2% or more at 65% RH. Excellent stockings. 6. The stocking with excellent wearing comfort according to any one of the above items 1 to 5, wherein the stocking is a knitting yarn, wherein a covering elastic yarn obtained by covering an elastic yarn with a polyamide filament is used as a knitting yarn. 7. The stocking with excellent wearing comfort according to any one of the above items 1 to 6, wherein at least the leg part of the stocking is knitted with a covering elastic yarn obtained by covering an elastic yarn with a polyamide long fiber and a polyamide long fiber. 8. Stockings consist of legs and panties,
The stocking with excellent wearing comfort according to any one of the above items 1 to 7, wherein both parts are integrated.

[0007]

Embodiments of the present invention will be described below in detail. The stocking used in the present invention is a knitted article composed of a single filament or a composite filament such as polyamide filament, polyester filament, polyacrylonitrile filament, viscose filament, or elastic yarn such as spandex. Some products, such as panties in pantyhose, also use short fibers such as cotton fibers.

[0008] The organic particles having high moisture absorption and desorption properties as used in the present invention include organic particles having high hygroscopicity, having high moisture absorption, exhibiting heat when absorbing moisture, and having no color or light color. If it can be used, as an example, polystyrene-based, polyacrylonitrile-based, polyacrylate-based, polymethacrylate-based polymer to any of the sulfonic acid group, carboxylic acid group, phosphoric acid group or those Some have introduced metal salts and have been crosslinked with either divinylbenzene or triallyl isocyanate.

The particle size of the organic particles having a high moisture absorption / desorption property is preferably 5 μm or less, more preferably 2 μm or less, from the viewpoint of increasing the moisture absorption / desorption rate, obtaining the washing durability by adhering to the fiber surface, and the feel of the skin. More preferred.

[0010] The amount of the organic particles having high moisture absorption / release properties is an important factor related to the reduction in stuffiness. To achieve the effect of reducing the stuffiness, 1 to 20% by weight based on the fiber weight
And preferably 3 to 10% by weight. If the amount is less than 1% by weight, the effect of reducing the feeling of stuffiness is poor, and if it exceeds 20% by weight, the texture deteriorates. Further, as an index indicating the effect of reducing the feeling of stuffiness, the difference in moisture percentage and ΔH are used. Moisture difference is 2
The moisture content of the stocking at 0 ° C, 95% RH and 20 ° C,
The difference in moisture content of the stockings at 65% RH, ΔH
Is the difference in the moisture content of the stockings depending on the presence or absence of the fine particles having high hygroscopicity, and is preferably 5% or more from the viewpoint of the effect.

The adhesive used for fixing the organic particles having high moisture absorption / release properties in the present invention includes an aqueous dispersion or emulsion of a reactive urethane resin, an acrylic resin, a polyamide resin, a polyester resin, or an epoxy resin. Is mentioned. These resins may be used alone or in combination.
In order to further enhance the moisture absorbing / releasing effect of the highly moisture absorbing / releasing organic fine particles of the present invention, the adhesive resin preferably has a 65% RH and a moisture content of 2% or more, and more preferably 4% or more.

The organic particles having high moisture absorption and desorption properties and the adhesive are provided on the fibers constituting the stockings, and are fixed to the fiber surfaces, fiber gaps and the like. As a method of applying the highly moisture-absorbing and releasing organic fine particles and the adhesive to the stocking, there are a dipping method and an exhaustion method. For fixing, there are dry heat treatment, wet heat treatment and the like.

[0013]

The present invention will be described in detail with reference to the following Examples, but it should not be construed that the invention is limited thereto. The measurement and evaluation of the stocking performance in the examples were performed by the following methods.

Washing: The durability of the processing agent was tested according to the household washing test method of JIS L103.

Moisture content difference: The moisture content at 95% RH and 65% RH was measured in accordance with the moisture content measurement method of JIS L 1096, and the difference was determined.

Δa value: MINOLTA SPECTRO
The a value was measured with PHOTOMETER CM-3700d. Fabric Δa value = (a value of processed mat side)-(a value of unprocessed mat side)

Texture: Touching the processed sample, softness,
The elasticity and elasticity were comprehensively evaluated in three stages. ◎: extremely good ○: good ×: bad

Wearing test: The subject was allowed to wear the sample, worn in a room at 27 ° C. and 65% RH, rested in a chair, and continued stepping on for 15 minutes, and the wearing feeling was evaluated on a three-point scale. ◎: No stuffiness ○: Little stuffiness ×: Great stuffiness

Measurement method of antibacterial property: Performed by shake flask method. The strain used was Staphylococcusa
ureus FDA209p), add a predetermined amount of the test bacterial solution to an Erlenmeyer flask, further add 1.5 g of a measurement sample piece, shake with a figure of 8,
After shaking at 0 rpm and 25 ° C., the viable cell count in the flask was measured by culturing, and then the sterilization rate (%) was calculated. Bacteria reduction rate (%) = ((B−A) / B) × 100 A; number of bacteria per ml in Erlenmeyer flask after shaking (pieces) B; number of bacteria per ml in Erlenmeyer flask before shaking ( Pieces)

(1) Production of Organic Particles Having High Moisture Absorption and Desorption a) Production of Improved Organic Particles Having High Moisture Absorption and Desorption Moisture and Heating: Methacrylic acid / sodium p-styrenesulfonate = 70 /
30 parts of the water-soluble polymer and 35 parts of sodium sulfate were dissolved in 6500 parts of water and charged in a polymerization tank equipped with a paddle-type stirrer. Then, 2,2'-azobis- (2,4-) was added to 2750 parts of methyl acrylate and 330 parts of divinylbenzene.
Dimethyl valeronitrile) was dissolved in 15 parts, charged into a polymerization tank, and polymerized at 60 ° C. for 2 hours under stirring conditions of 400 rpm to obtain a methyl acrylate / divinylbenzene copolymer having a polymerization rate of 88% and an average particle diameter of 64 μm. Obtained. The polymer 10
0 parts were dispersed in 900 parts of water, and 110 parts of caustic soda was added thereto, reacted at 90 ° C. for 2.5 hours, and hydrolyzed the methyl ester part of methyl acrylate to obtain a carboxyl group 4.6. A crosslinked polymer having a meq / g was obtained. The obtained polymer is dispersed in water, washed, dehydrated, dried and pulverized to improve the high moisture absorption / release moisture absorption / heat generation organic fine particles a.
I got

After drying the organic fine particles at 120 ° C. for 12 hours under normal pressure, the moisture absorption after leaving for 10 minutes in an atmosphere of 70% RH (20 ° C.) was 10%, and 41% after 24 hours. . The moisture absorption after 24 hours in an atmosphere of 90% RH (20 ° C.) is 79%, and thereafter, the humidity is 40% RH (20 ° C.).
When the atmosphere was transferred to, the moisture absorption after 10 minutes was 66% and the moisture after 24 hours was 23%, confirming the moisture absorption / release properties.

B) Production of Organic Particles Having High Moisture Absorption and Release Moisture Absorption Heating 500 parts of acrylonitrile, 12 parts of sodium p-styrenesulfonate and 1200 parts of water were charged into an autoclave, and di-tert-butyl peroxide was used as a polymerization initiator. After adding 1.0% with respect to the total amount of the monomer, the mixture was sealed, and then polymerized at a temperature of 155 ° C. for 25 minutes with stirring. An aqueous dispersion of raw material fine particles of 0.3 μm (measured with a light scattering photometer) was obtained.

Hydrazine was added to the aqueous dispersion so that the concentration in the bath was 40%, and crosslinking treatment was performed at 110 ° C. for 3 hours. Subsequently, NaOH was added so that the concentration in the bath was 12%.
After a hydrolysis treatment at 100 ° C. for 10 hours, dialysis, desalting, drying, and pulverization in running water were performed to obtain highly heat-absorbing, moisture-absorbing, and heat-generating fine particles b. The amount of nitrogen increase of the organic fine particles was 3.7%, the salt-based carboxyl group was 4.1 mmol / g, and the 65% RH (2
0 ° C.) was 43%, and the average particle size was 2.5 μm. After drying the organic fine particles at 120 ° C. for 12 hours under normal pressure,
The moisture absorption after standing for 10 minutes in an atmosphere of 70% RH (20 ° C.) was 10%, and was 40% after 24 hours. The moisture absorption after 24 hours in an atmosphere of 90% RH (20 ° C.) is 78%, and when the atmosphere is subsequently moved to an atmosphere of 40% RH (20 ° C.), the moisture absorption after 10 minutes is 65%. The moisture content after 24 hours was 22%, confirming the moisture absorption / release properties.

(2) Processing agent Elastron W-33: Water-soluble polyurethane manufactured by Daiichi Kogyo Seiyaku Co., Ltd., 30% solid content Catalyst 64: Catalyst manufactured by Daiichi Kogyo Seiyaku

(Example 1) A double covering yarn in which 31 dtex polyurethane elastic yarn was used as a core yarn and 7.7 dtex nylon raw yarn was wound in both S and Z directions, and 16.5 dtex nylon raw yarn were placed every other course. We mixed and made stockings. This stocking was improved by using the high moisture absorbing and releasing fine particles a and a chemical, immersing in the formulation shown in Table 1, draining to a squeezing ratio of 70%, and drying at 80 ° C.
A heat treatment at 15 ° C. was performed. The obtained processed stockings were washed five times, and the moisture content before and after washing and the results of the wearing test are shown in Table 1.

(Embodiment 2) Using the same stockings as in Embodiment 1, the ratio of the improved high moisture absorbing / desorbing fine particles a in the working fluid was reduced to half of that of Embodiment 1, and the immersion and dewatering were performed. 8
After drying at 0 ° C., a heat treatment at 115 ° C. was performed. The obtained processed stockings were washed five times, and the moisture content before and after washing and the results of the wearing test are shown in Table 1.

(Comparative Example 1) The same stocking as in Example 1 was used, except that the fine particles having high hygroscopicity were removed from the working fluid. After drying at 80 ° C., heat treatment at 115 ° C. was performed to obtain a working stocking. The obtained processed stockings were washed five times, and the results of ΔH, moisture percentage, and wear test before and after washing are shown in Table 1.

(Comparative Example 2) The same stocking as in Example 1 was used, and the same procedure as in Example 1 was carried out except that the high-absorbing and desorbing fine particles a in the working fluid were replaced with conventional high-absorbing and desorbing fine particles b. After immersion and dewatering, the squeezing rate was set to 70%, dried at 80 ° C., and then heat-treated at 115 ° C. to obtain a working stocking.
The obtained processed stockings were washed five times, and the results of ΔH, moisture percentage, and wear test before and after washing are shown in Table 1.

[0029]

[Table 1]

As apparent from Table 1, the processed stockings obtained in Examples 1 and 2 exhibit excellent moisture absorption / desorption properties and washing durability, as well as antibacterial properties, and are suppressed in coloring. I have.

[0031]

The processed stocking of the present invention has an average particle size of 5 on at least some of the fibers constituting the stocking.
μm or less, high specific moisture-absorbing and desorbing organic fine particles are held through a moisture-permeable resin, so it has excellent moisture-absorbing and desorbing properties and washing durability, excellent wearing comfort, and antibacterial properties. It is a stocking also having.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ryosuke Nishida 122-2 F term, 122-2 Haji, Osafune-cho, Oku-gun, Okayama Prefecture (Reference) 3B018 AA01 AC02 AC04 AD02 AD07 AD11 HA01 HA05 HB02 HB04 4L002 AA06 AC01 BA01 DA03 EA03 EA06 FA03 FA05 4L033 AB06 AC10 AC15 CA18 CA22

Claims (8)

[Claims] 1. A stocking comprising at least a part of the fibers constituting the stocking and having the following highly hygroscopic organic fine particles having an average particle size of 5 μm or less in an amount of 1 to 20% by weight based on the weight of the fiber. Stockings with excellent wearing comfort characterized by satisfying the relational expressions. High moisture absorption / desorption moisture absorbing heat-generating organic fine particles: sulfonic acid group, carboxylic acid group, phosphoric acid group, or a sulfonic acid group, a carboxylic acid group, a phosphoric acid group, or a polystyrene-based, polyacrylonitrile-based, polyacrylate-based, or polymethacrylate-based polymer A metal salt has been introduced and is crosslinked with either divinylbenzene or triallyl isocyanate. ΔH = H 1 −H 0 ≧ 5 (%) H 1: Moisture difference (%) of stockings with high moisture absorption / desorption organic fine particles H 0: Moisture difference of stockings without high moisture absorption / desorption organic fine particles (%) ) Moisture percentage difference (%) = RH (95) -RH (65) RH (95): Moisture percentage (%) of stocking at 20 ° C., 95% RH RH (20): 20 ° C., 65% RH Moisture percentage of stockings (%) 2. The stocking with excellent wearing comfort according to claim 1, wherein the high moisture absorption / desorption organic fine particles have an initial moisture absorption rate of 0.8% / min or more. 3. Moisture content after washing process 5 times (20 ° C., 65%
The stocking according to any one of claims 1 to 2, wherein the stocking (RH) is 5% or more. 4. The wearing comfort according to any one of claims 1 to 3, wherein the difference in moisture content of the stocking in which the organic particles having high moisture absorption and desorption properties are fixed on the fibers after washing treatment is 5% or more. stockings. 5. An adhesive for fixing highly hygroscopic organic fine particles on fibers constituting a stocking is 65% RH and a water content of 2%.
The stocking having excellent wearing comfort according to any one of claims 1 to 4, wherein 6. The stocking excellent in wearing comfort according to claim 1, wherein the stocking is a knitting yarn made of a covering elastic yarn obtained by covering an elastic yarn with a polyamide long fiber. 7. The stocking according to claim 1, wherein at least a leg portion of the stocking is knitted by a covering elastic yarn obtained by covering an elastic yarn with a polyamide filament and a polyamide filament. Stockings with excellent wearing comfort. 8. The stocking according to claim 1, wherein the stocking comprises a leg portion and a panty portion, and both portions are integrated.