JPH11335946A - Sports wear made of polyamide fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sports wear made of polyamide fiber that shows excellent moisture absorption, wearing comfort, and fabric hand, as the mechanical strength, resistance to chemicals and color development are retained, by maintaining the moisture absorption and moisture release parameter (delta MR) of a specific knitted fabric more than a prescribed value and the burst strength more than a prescribed value. SOLUTION: This sports wear is composed of a knitted fabric containing, as a construction yarn, a high moisture-absorbing polyamide filament having >=2.5%, preferably 3-8% delta MR, containing 3-15 wt.% of polyvinylpyrrolidone of 0.10 wt.% pyrrolidone content, and the delta MR of the knitted fabric is >=2.5%, preferably 3-8% and its bust strength is >=3 kg/cm<2> . The density of the knitted fabric is 22-82 well/inch and 28-130 course/inch, and at least one of the construction yarns has 0.1-10 denier filament fineness and the total yarn fineness is 30-300 denier and the unit weight of the knitted fabric is preferably 80-330 g/m<2> .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sportswear made of polyamide fiber having a hygroscopic property, and more particularly, to a high hygroscopic property while maintaining excellent mechanical strength, chemical resistance, color development and the like inherent to the polyamide fiber. And a sportswear made of polyamide fiber having a soft feeling and a comfortable wearing feeling.

[0002]

2. Description of the Related Art Polyamide fibers have excellent properties such as mechanical strength, chemical resistance, heat resistance, coloring properties, washing durability, and soft touch, and are mainly used for clothing, socks, and industrial applications. Widely used for. However, on the other hand, the polyamide fiber has low hygroscopicity and is higher than polyester fiber, but extremely low compared to natural fiber represented by cotton, so that it directly touches the skin like exercise clothes or is close to the skin side. When used for applications worn in a state, there is a drawback that the sweating from the skin causes stuffiness and stickiness.

[0003] For these reasons, polyamide fibers are
In terms of comfort, it is inferior to natural fibers typified by cotton and cellulosic synthetic fibers typified by rayon, and has been a major problem to be solved when used for athletic wear. Conventionally, as a countermeasure to this problem, knitted fabrics in which natural fibers or cellulose-based synthetic fibers are mixed by mixing or the like have been usually used. However, although natural fibers and cellulosic synthetic fibers have high hygroscopicity and enable comfortable wearing, they have the drawback that they are low in strength and inferior in washing durability, and are liable to wrinkle and lack form stability. I was In addition, natural fibers and cellulosic fibers have low strength, and if they are mixed in too much, the rupture strength of the knitted fabric itself is reduced, and there is a problem that it cannot be used as sportswear for exercise.

[0004] In order to solve the above-mentioned drawbacks of polyamide fibers, attempts have been made to obtain high moisture-absorbing comfort as a fabric by blending, twisting, or aligning fibers having a high equilibrium moisture content (moisture absorption). is there. However, according to this measure,
Although comfort is improved for the time being, its effect is not always sufficient, and stains are caused by acid dyes generally used for dyeing synthetic fibers, or poor in same color,
There is a problem that the original physical properties of the synthetic fiber are lost.

There is also a method of imparting hygroscopicity in a post-processing stage. However, in order to obtain sufficient hygroscopicity by this method, it is necessary to pick up a large amount of hygroscopic resin into a knitted fabric for exercise wear, and it is necessary to make the thickness of the knitted fabric a certain size. For sportswear using a wide range of knitted fabrics from thick fabrics, it cannot be applied to the field using thin fabrics. Further, even if sufficient hygroscopicity is obtained, there is a drawback that the texture of the knitted fabric is hardened due to the formation of a hygroscopic resin film on the surface of the knitted fabric, and the feel when worn as a sportswear is poor. Further, there is also a problem that washing durability is poor because resin drops due to washing.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the above-mentioned problems of the prior art and to maintain high mechanical strength, chemical resistance, color development and the like of polyamide fiber while maintaining high hygroscopicity. An object of the present invention is to provide a sportswear made of polyamide fiber which has a soft texture and enables a comfortable wearing feeling.

[0007]

SUMMARY OF THE INVENTION To solve the above-mentioned problems, the polyamide fiber athletic suit of the present invention has a moisture absorption / desorption parameter Δ.
The knitted fabric contains a polyamide filament having an MR of 2.5% or more as a constituent yarn, and has a moisture absorption / desorption parameter ΔMR of 2.5% or more and a burst strength of 3 or more.
kg / cm ² or more.

[0008] As described above, the knitted fabric is composed of a knitted fabric containing a polyamide-based filament having a moisture absorption / desorption parameter ΔMR of 2.5% or more, and the knitted fabric itself has a moisture absorption / desorption parameter ΔMR of 2.5% or more; Burst strength 3kg / cm
^{With 2} or more, the polyamide fiber has the original mechanical strength, chemical resistance, and coloring properties, but also has high moisture absorption and soft texture, so it can guarantee the comfortable wearing feeling required for sportswear. it can.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, exercise wear is a general term for clothes worn during exercise. For example, running shirts and pants, competition shirts, tennis shirts, golf shirts, training wear, baseball uniforms, swimwear, leotards, cycle pants, under pants, etc. requiring large stretches can be mentioned.

The polyamide fiber athletic garment of the present invention is composed of a knitted fabric, and the constituent yarn (knitted yarn) of the knitted fabric contains a highly hygroscopic polyamide filament having a moisture absorption / desorption parameter ΔMR of 2.5% or more. I have. The knitted fabric does not necessarily need to be composed solely of highly hygroscopic polyamide-based filaments. Natural fibers and cellulose-based synthetic fibers can be mixed as long as the inherent mechanical strength, chemical resistance, and coloring properties of polyamide fibers are not impaired. Or knitting.

That is, the moisture absorption / desorption parameter ΔMR of the knitted fabric itself is 2.5% or more and the burst strength is 3 kg /
Natural fibers and cellulosic synthetic fibers may be used in combination, as long as it is maintained at or above cm ² .

As described above, the highly hygroscopic polyamide filament used in the present invention has a moisture absorption / desorption parameter ΔM
R needs to be 2.5% or more, and the moisture absorption / release parameter ΔMR of the knitted fabric after knitting from the polyamide-based filaments also needs to be 2.5% or more. More preferably, the moisture absorption / desorption parameter ΔMR of the highly hygroscopic polyamide-based filament and the knitted fabric is 3 to 3.
8%, even more preferably 4-8%,
It is possible to further improve the comfort when worn as the athletic suit, and the yarn-making and knitting properties of the filament.

When the moisture absorption / desorption parameter ΔMR of the polyamide filament and the knitted fabric is less than 2.5%, it is difficult to prevent stuffiness and stickiness due to sweat from the skin due to low moisture absorption. The goal cannot be achieved. When the moisture absorption / desorption parameter ΔMR is larger than 8%, the stickiness due to the absorbed moisture increases.

In the present invention, the "moisture absorption / desorption parameter ΔM"
“R” means the moisture absorption MR2 at 30 ° C. × 90% RH.
And a moisture absorption rate MR1 at 20 ° C. × 65% RH, and is a value represented by the following equation. Moisture absorption / desorption parameter ΔMR (%) = MR2-MR1 That is, the moisture absorption / desorption parameter ΔMR is a driving force for obtaining comfort by releasing moisture in the clothes when the clothes are worn to the outside air, Difference between the moisture absorption rate at the humidity in clothes represented by 30 ° C. × 90% RH and the moisture absorption rate at the outside temperature humidity represented by 20 ° C. × 65% RH during light to moderate exercise Represents In the present invention, the moisture absorption / desorption parameter ΔMR is used as a scale of the evaluation of moisture absorption, and the larger the value, the higher the moisture absorption / desorption power, and the better the comfort when worn.

The knitted fabric constituting the athletic garment made of polyamide fiber of the present invention has a density of 22 to 82 wells / inch and 28 to 130 courses / inch, and at least one of the wells and courses has a yarn. It is preferable that the single fiber fineness is 0.1 to 10 denier, the total fineness is 30 to 300 denier, and the basis weight is 80 to 330 g / m ² .

If the density of the knitted fabric is less than 22 wells / inch and less than 28 courses / inch, the strength of the athletic suit is insufficient, and the eyes are twisted, so that it is difficult to use the athletic suit. . In addition, knitting properties tend to be poor. On the other hand, when the density is more than 82 wells / inch and more than 130 courses / inch, the texture of the knitted fabric becomes hard and the lightness is impaired, so that it becomes difficult to use it as a sportswear. Further, the knitting property is also deteriorated.

On the other hand, if the basis weight of the knitted fabric is less than 80 g / m ² , the knitted fabric will be tight. Conversely, 330 g / m ²
If it is larger than the
Moreover, since it becomes too heavy, the mobility at the time of wearing will be impaired. On the other hand, when the single yarn fineness of at least one of the well and the course of the knitted fabric constituting the athletic suit of the present invention exceeds 10 denier, the texture of the knitted fabric becomes hard and is used as the athletic suit. Becomes difficult. On the other hand, if it is less than 0.1 denier, the spinning properties will be reduced. The lower limit of the single yarn fineness is more preferably 1
Denier or more is preferred.

As the constituent yarns of the knitted fabric, yarns having different single yarn deniers such as mixed yarns of different deniers may be used. Such a mixed fineness yarn is preferable from the viewpoint of producing a soft and taut athletic gown. When such a mixed fineness yarn is used, the use of a hygroscopic polyamide fiber as the thick fineness yarn is advantageous in increasing the moisture absorption rate and making it soft and tight athletic wear.

When the total fineness of the constituent yarns is less than 30 denier, knitting properties are deteriorated, and there is a tendency that the athletic wear has no tension. Conversely, if the total fineness is greater than 300 denier, the texture of the knitted fabric becomes hard, and it becomes difficult to use the knitted fabric as a sportswear. In addition, the knitted fabric constituting the exercise clothing of the present invention needs to have a burst strength of 3 kg / cm ² or more. If the bursting strength is less than 3 kg / cm ^2, it is easily broken during exercise, and cannot be used. This bursting strength is generally about 30 kg / cm ² at a large value, but in the case of such a bursting strength, the weight becomes heavy using a thick yarn.

The knitted fabric used in the present invention may be a warp knitted fabric or a circular knitted fabric, and is not particularly limited. Examples of the warp knitted fabric include a tricot fabric and a Russell fabric, and examples of the circular knitted fabric include a single circular knitted fabric and a double circular knitted fabric. Also, as the knitting structure, there are conventionally knitted fabrics such as a half structure of a warp knitted fabric, a mesh structure, a one-sided unevenness-changed structure, a satin structure, and a circular knitted fabric such as a sheet woven structure, an interlock structure, and a one-sided unevenness-changed structure. Any of the known knitting structures used in the above can be used.

The knitted fabric used in the present invention may have the above-described knitting structure formed as a single layer, or may have a multi-layered structure such as two layers or three layers. When using a knitted fabric of a multilayer structure, use the above-described highly hygroscopic polyamide-based filament for the yarn constituting the front side, and the yarn constituting the back skin side usually has a lower hygroscopicity than this polyamide-based filament. Polyamide filaments or ordinary polyester filaments may be used.

In the knitted fabric of such a multilayer structure, gaseous sweat is absorbed by the highly hygroscopic polyamide-based filament on the front side, and liquid sweat is caused by the capillary action of the two-layer or three-layer multilayer knit structure. Since water can be absorbed, permeated, and diffused quickly and efficiently from the skin side to the front side, it is suitable as a sportswear for intense exercise. Further, the knitted fabric used in the present invention may include a rubber-like elastic yarn represented by a polyurethane-based elastic yarn or the like. In sportswear such as swimwear, leotards, cycle pants, and underpants that require a larger stretch, including such elastic rubber thread allows the stretch power to fit the athlete's body and exercise during exercise. Functionality can be enhanced.

The mixing ratio of the rubbery elastic yarn is preferably 30% by weight or less based on the total weight of the knitted fabric. If the mixing ratio is more than 30% by weight, the stretching power of the exercise clothes becomes too strong, so that the feeling of pressure at the time of wearing becomes large, the feeling of wearing becomes poor, and the mobility is impaired. Also, the cost is high. As a method of mixing the rubber-like elastic yarn into the knitted fabric, for example, a normal cross-knitting of a bare yarn of polyurethane-based elastic yarn, or a core of elastic yarn,
It may be knitted as a covering yarn having another fiber as a sheath, and is not particularly limited.

The step of dyeing the knitted fabric used in the present invention comprises:
There is no problem at all in the processing steps applied to ordinary polyamide-based knitted fabrics, such as relaxation refining-dyeing-functionalization processing-finishing set. Alternatively, a greige machine may be set. Examples of processing for imparting functionality include antistatic, deodorant, water repellent, antifouling, sweat-absorbing and mildew-proofing treatments, which are performed within a range that does not impair the purpose of the present invention by keeping the texture of the knitted fabric soft. Then, these processes are not limited at all. In addition, it is preferable to impart the functionality of the moisture absorption process, because the moisture absorption rate of the knitted fabric is further increased, and the comfort during wearing is further improved.

The polyamide fiber athletic suit of the present invention may use the above-described knitted fabric for the entire athletic suit, or may partially use it for a part of the athletic suit. is not. The moisture-absorbing polyamide-based filament used in the present invention is not particularly limited as long as it contains a polyamide component and has a moisture absorption / desorption parameter ΔMR of 2.5% or more. In consideration of knitting properties, dyeing properties, durability of yarn performance, and the like, it is preferable to use fibers having the following configuration.

That is, the polyamide filament used in the present invention preferably contains 3 to 15% by weight of polyvinylpyrrolidone having a pyrrolidone content of 0.10% by weight or less. This particular polyvinylpyrrolidone (hereinafter referred to as PVP) is characterized in that the amount of pyrrolidone contained therein is extremely low, at 0.10% by weight or less.

This PVP is a moisture-absorbing component. In order to suppress stuffiness and stickiness when worn as athletic clothing, 3% by weight or more based on the polyamide is used.
The content is 5% by weight or less. Particularly, it is preferable to contain 4 to 8% by weight. When the content of PVP is less than 3% by weight, the hygroscopicity becomes insufficient, and it becomes impossible to obtain the exercise suit aimed at by the present invention. On the other hand, if the content is too large, more than 15% by weight, the sticky feeling becomes strong and the comfort when worn becomes poor. In addition, it is difficult to stably produce yarn.

Further, the content of pyrrolidone in PVP is set to 0.10% by weight or less. Preferably 0.05% by weight
Or less, more preferably 0.03% by weight or less. If the content of this pyrrolidone is too large, the color tone becomes yellowish in the state of the green fabric after knitting, so that the color tone after dyeing becomes dull and the desired color tone and luxury can be obtained. Disappears.

PVP having a pyrrolidone content of 0.10% by weight or less can be obtained by a synthesis method using isopropyl alcohol as a solvent during polymerization. In addition, it is preferable not to include a hydrogen peroxide-based catalyst as a polymerization initiator at the time of the polymerization in order to further suppress the generation of pyrrolidone, a by-product that causes a yellow tint. The PVP used in the present invention has extremely high water solubility, and has a property of easily bleeding out to the polymer surface even after being contained in the polymer. Pyrrolidone, a by-product, is also extremely water-soluble and likewise easily bleeds out to the polymer surface.

Therefore, in the case of a highly hygroscopic polyamide fiber containing PVP, it is necessary to suppress the elution of PVP and pyrrolidone contained therein in order to maintain the hygroscopic property and maintain a good hand. For example, if the elution rate is 5% or more, PVP is deposited on the fiber surface, which is not preferable because it gives a rough feeling when worn as a sportswear. In order to keep the dissolution rate at a low level, it is preferable to employ means for strengthening the entanglement of the molecular chains of PVP and the nylon polymer. As this means, for example, a method in which PVP is kneaded into polyamide by an extruder to obtain a master polymer can be mentioned.

The PVP-containing master polymer chip thus obtained is supplied to the melt spinning after the chip is substantially blended with the chip without PVP to a predetermined concentration by a chip blending method for adjusting the concentration. Polyamide containing a predetermined concentration of PVP is produced by a usual melt spinning method. The spinning method may be a direct spinning drawing method in which after spinning, cooling, and oiling, the spinning is performed at a spinning speed of 1000 m / min or more, and then the film is stretched and wound without being wound once, or 3,000 m / min. A high-speed spinning method in which the spinning is taken at a high speed and wound up without stretching may be used.

Highly hygroscopic polyamide filaments include nylon 6, nylon 66, nylon 610, nylon 4
6 or a polyamide long fiber made of a copolymer of these polyamides or the like, and is not particularly limited. Further, the cross-sectional shape of these highly hygroscopic polyamide-based filaments may be any of a round cross-section, a three-lobe cross-section, a four-lobe cross-section, and a hollow cross-section, and is not particularly limited.

The polyamide filaments having high hygroscopicity include titanium oxide, as long as the object of the present invention is not impaired.
Pigments such as carbon black, various antioxidants, coloring inhibitors, light stabilizers, antistatic agents, and the like may be added.

[0034]

The evaluation of the characteristics and the like used in the following examples and comparative examples is obtained by the following method.

[Moisture Absorption and Desorption Parameters ΔMR] Using a fiber or a knitted fabric of 1 to 3 g, the weight when dried was 20
The moisture absorption of the following equation was calculated from the weight change with the weight after standing in a commercially available thermo-hygrostat for 24 hours in an atmosphere of ° C x 65% RH and 30 ° C x 90% RH. Moisture absorption rate (%) = [(weight after moisture absorption-weight when dried) / weight when absolutely dried] × 100 The moisture absorption rates MR1 and 30 under the conditions of 20 ° C. × 65% RH calculated based on the above equation. ΔMR (%) = MR2-MR1, which is obtained from the moisture absorption rate MR2 under the condition of ° C × 90% RH, is determined as the moisture absorption / desorption parameter.

[Burst Strength] The burst strength was determined in accordance with JIS L 1018 “Knitted fabric test method”. 15cm × 15cm
5 test pieces are collected. With the test piece facing upward and in a normal state without applying tension, the test piece was attached to a Mullen-type burst tester, and the burst strength was measured.

[Pyrrolidone content] 1 to 3 g of the yarn is dissolved in chloroform, and gas chromatogram analysis is performed by a conventional method using a GC14A type device manufactured by Shimadzu Corporation. The pyrrolidone content is determined by the following equation. Pyrrolidone content (%) = [(GC peak area / calibration coefficient) (mg / ml) × solution amount (ml) / sample amount (m
g)] × 100

[Comfort when Wearing] Each knitted fabric was made into running shirts and pants, and a subject of eight young men and women wearing these running shirts and pants in an artificial weather chamber at 30 ° C. × 65% RH. After performing a jogging exercise at a speed of 12 km / h for 15 minutes using a treadmill, the comfort was evaluated by a sensory test.

The criteria for the evaluation of comfort were as follows: ×: uncomfortable Δ: slightly uncomfortable ○: comfortable ：: very comfortable The criteria for the comprehensive evaluation are as follows: ：: Excellent as exercise clothing. ×: Not suitable as exercise clothing. Displayed with.

Example 1 As PVP, pyrrolidone content synthesized by a usual method using isopropyl alcohol as a solvent 0.02% by weight
Of PVP was obtained. This PVP was kneaded with nylon 6 using an extruder to obtain a master polymer chip having a PVP concentration of 30% by weight. This is blended with a normal nylon 6 chip and the master polymer chip at a predetermined ratio, and a PV for nylon 6 in the blend chip is blended.
The P content was 3% by weight.

This blended chip was subjected to a conventional nylon melt spinning method to obtain a nylon 6 filament of 30 denier and 10 filaments (single yarn fineness of 3.0 denier) containing 3% by weight of PVP and 0.02% by weight of pyrrolidone.
The moisture absorption / desorption parameter ΔMR of this yarn was 3.9%.

Next, a knitted fabric for running shirts and pants is knitted, and a greige fabric is knitted with a half structure of a tricot knitting machine 36G using 100% of the filament.
1 well / inch, 73 courses / inch, basis weight 86g
/ M ² . Furthermore, using this knit, running shirts and pants for wearing evaluation were produced. The moisture absorption / desorption parameter ΔMR of the knitted fabric was 3.9%, and the burst strength was 3.6 kg / cm ² . The wearing test in the climate chamber was very comfortable. The evaluation results are also shown in Table 1.

Example 2 According to the same melt spinning method as in Example 1, 70 denier, 96% containing 4% by weight of PVP and 0.04% by weight of pyrrolidone was used.
Nylon 6 with filament (single yarn fineness 0.7 denier)
Filament was obtained. The moisture absorption / desorption parameter Δ of this yarn
The MR was 4.2%.

Next, aiming at a knitted fabric for soccer shirts and pants, which is a kind of competition shirt, this filament 100
After knitting the greige fabric with the interlock structure of the double circular knitting machine 24G with the use of%, the finishing density is 36 well / inch, 55 courses /
A knitted fabric having a basis weight of 151 g / m ² was prepared. Further, in the same manner as in Example 1, using this knitted fabric, running shirts and pants for wearing evaluation were produced. This fabric has a moisture absorption / desorption parameter ΔMR of 4.2% and a burst strength of 7.3 kg.
/ Cm ² . The wearing test in the climate chamber was very comfortable. The evaluation results are also shown in Table 1.

Example 3 By the same melt spinning method as in Example 1, 140 denier containing 7% by weight of PVP and 0.08% by weight of pyrrolidone,
Nylon 6 filaments of 4 filaments (single yarn fineness: 5.8 denier) were obtained. The moisture absorption / desorption parameter ΔMR of this yarn was 6.1%.

Next, aiming at a knitted fabric for a baseball uniform,
After knitting the greige fabric with the mock rody structure of the double circular knitting machine 22G using 100% of the filament, according to the ordinary nylon circular knitting fabric dyeing method, the finishing density is 44 wells / inch and the basis weight is 265 g / inch at 51 courses / inch. An k ² knit was produced. Further, in the same manner as in Example 1, using this knitted fabric, running shirts and pants for wearing evaluation were produced. The moisture absorption / desorption parameter ΔMR of this knitted fabric is 6. %,
Burst strength was 12.4 kg / cm ² .

The wearing test in the climate chamber was very comfortable. In addition, a baseball uniform, which is a specific athletic suit, was produced, and a wearing test was performed in the same manner. The evaluation results are also shown in Table 1.

Example 4 By the same melt spinning method as in Example 1, 15% by weight of PVP,
160 denier 4 containing 0.03% by weight of pyrrolidone
A nylon 6 filament of 8 filaments (single yarn fineness: 3.3 denier) was obtained. The moisture absorption / desorption parameter ΔMR of this yarn was 7.1%.

Next, after aiming at a knitted fabric for training wear, a double circular knitting machine 22G knits a greige machine with a reversible structure in which 50% of this filament is arranged on the front side and 50% of ordinary nylon 6 filament is arranged on the back side. Finishing density 4
2 wells / inch, 53 courses / inch, basis weight 320
A knitted fabric of g / m ² was produced. Further, as in Example 1, a running shirt for wearing evaluation using this knitted fabric.
Pants were made. Moisture absorption / desorption parameter Δ of this knit
The MR was 3.6% and the burst strength was 15.7 kg / cm ² .

The wearing test in the artificial weather chamber was comfortable.
In addition, training wear as a specific athletic suit was produced, and the wearing trial was performed in the same manner. As a result, it was comfortable. The evaluation results are also shown in Table 1.

Example 5 By the same melt spinning method as in Example 1, a nylon 6 filament of 40 denier 13 filaments (single yarn fineness of 3.1 denier) containing 3% by weight of PVP and 0.02% by weight of pyrrolidone was obtained. Moisture absorption / desorption parameter ΔM of this yarn
R was 3.9%.

Next, aiming at a knitted fabric for a leotard, a half structure of a tricot knitting machine 28G is used by cross knitting of 80% of the filament and 20% of a 40 denier polyurethane elastic yarn (trade name "Operon" manufactured by Dupont Toray). After knitting the greige machine, according to the ordinary nylon / polyurethane elastic yarn knitting tricot fabric dyeing method, the finish density is 81 well / inch, 125 course / inch, and the basis weight is 210 g / inch.
to produce a knitted fabric m ^2, and more, in the same manner as in Example 1 to prepare a sleeveless shirt, pants for wearing evaluated using this knitting. The moisture absorption / desorption parameter ΔMR of this knitted fabric is 3.
1%, burst strength was 5.1 kg / cm ² .

The wearing test in the artificial weather chamber was comfortable.
In addition, a leotard as a specific athletic suit was produced, and the wearing test was performed similarly. The evaluation results are also shown in Table 1.

Comparative Example 1 Nylon 6 filament of ordinary 30 denier 10 filament (single yarn fineness 3.0 denier) containing no PVP and pyrrolidone was used. The moisture absorption / desorption parameter ΔMR of this yarn was 2.0%.

In the same manner as in Example 1, a knitted fabric for running shirts and pants is aimed at, and a greige fabric is knitted with a half structure of a tricot knitting machine 36G using 100% of the filament.
A knitted fabric having a basis density of 84 g / m ² was prepared at a finish density of 52 wells / inch and 71 courses / inch in accordance with a usual method of dyeing nylon tricot fabric, and the knitted fabric was used to evaluate running shirts and pants for wearing evaluation. Was prepared. The moisture absorption / desorption parameter ΔMR of the knitted fabric is 2.0%,
Burst strength was 3.5 kg / cm ² . In the wearing test in the artificial climate room, there was stuffiness and it was unpleasant. The evaluation results are also shown in Table 1.

Comparative Example 2 According to the same melt spinning method as in Example 1, 20 denier containing 12% by weight of PVP and 0.02% by weight of pyrrolidone, 12
Nylon 6 with filament (single yarn fineness: 1.7 denier)
Filament was obtained. The moisture absorption / desorption parameter Δ of this yarn
The MR was 2.3%.

Aiming at knitting for running shirts and pants,
Tricot knitting machine 36G with 100% filament
After knitting the greige fabric with a half structure, a knitted fabric having a finish density of 41 wells / inch and 57 courses / inch and a basis weight of 65 g / m ² was prepared in accordance with the usual method of dyeing nylon tricot fabric. Was used to produce running shirts and pants for wearing evaluation. The moisture absorption / desorption parameter ΔMR of the knitted fabric is 2.3%, and the burst strength is 2.4 kg.
/ Cm ² .

In the wearing test in the artificial weather chamber, the stuffiness was somewhat unpleasant. Further, the fabric was thin and easily transparent, and was easily torn because of its low bursting strength. The evaluation results are also shown in Table 1.

Comparative Example 3 By the same melt spinning method as in Example 1, 160 denier 48 containing 5% by weight of PVP and 0.03% by weight of pyrrolidone.
Nylon 6 with filament (single yarn fineness 3.3 denier)
Filament was obtained. The moisture absorption / desorption parameter Δ of this yarn
The MR was 5.3%.

Next, a greige fabric is knitted by a double circular knitting machine 22G with a reversible structure in which 30% of the filament is placed on the back side and 70% of ordinary nylon 6 filament is placed on the front side, aiming at a knitted fabric for training wear. Finishing density 4
7 wells / inch, 60 courses / inch, basis weight 345
A knitted fabric of g / m ² was produced. Further, as in Example 1, the knitted fabric was used to evaluate a running shirt for wearing evaluation.
Pants were made. Moisture absorption / desorption parameter ΔM of this knit
R was 1.6% and burst strength was 18.2 kg / cm ² .

In a wearing test in an artificial weather chamber, the sample had a stuffy feeling and was heavy and hard to move. In addition, training wear as a specific athletic suit was produced, and a wearing trial was performed in the same manner. As a result, it was very uncomfortable. The evaluation results are also shown in Table 1.

[0062]

[Table 1]

[0063]

As described above, according to the present invention, a kinetic garment is formed from a knitted fabric containing a polyamide filament having a moisture absorption / desorption parameter ΔMR of 2.5% or more, and the moisture absorption / desorption parameter of the knitted fabric itself is obtained. Since the ΔMR is 2.5% or more and the burst strength is 3 kg / cm ² or more, the polyamide fiber has high mechanical absorption, chemical resistance, and coloring, while having high moisture absorption and soft texture. Thus, a comfortable wearing feeling required for sportswear can be guaranteed.

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Claims (4)

[Claims] 1. A knitted fabric containing a polyamide filament having a moisture absorption / desorption parameter ΔMR of 2.5% or more as a constituent yarn, the knitted material has a moisture absorption / desorption parameter ΔMR of 2.5% or more, and has a bursting strength. Is a sportswear made of polyamide fiber with a weight of 3 kg / cm ² or more. 2. The polyamide fiber athletic garment according to claim 1, wherein the polyamide filament and the knitted fabric each have a moisture absorption / desorption parameter ΔMR of 3 to 8%. 3. The knitted fabric has a density of 22 to 82 wells / inch and 28 to 130 courses / inch, and at least one of the wells and the course has a single yarn fineness of 0.1 to 10 denier and a total fineness of 30. 300 is denier, and polyamide textile sportswear according to claim 1 or 2 basis weight of knitted product is 80~330g / m ^2. 4. The polyamide fiber according to claim 1, wherein the polyamide filament comprises a highly hygroscopic polyamide containing 3 to 15% by weight of polyvinylpyrrolidone having a pyrrolidone content of 0.10% by weight or less. Athletic clothes.