JPH11200119A - Wear having excellent mobility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wear having excellent function to enhance instantaneous motive force and durability in a locomotion. SOLUTION: This wear uses a knitted fabric including polyurethane elastic fibers having <=3,000 g average tenacity of warp and weft at the third time of 80% elongation in repeating of warp and weft simultaneously 80% elongation having excellent instantaneous motive force and durability in which touch pressures at muscles and articulation parts used in a locomotion are designed to 8-20 gf/cm<2> in a standard state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to sportswear. More specifically, the present invention relates to sportswear such as suits, underwear, spats, swimwear, leotards, etc., which are excellent in elasticity and are worn in soccer, athletics, skating, swimming, aerobics, etc. among various types of wear worn during exercise.

[0002]

2. Description of the Related Art As is well known, elastic fibers and nylon fibers,
A knitted knitted fabric obtained by knitting polyester fibers or the like, for example, tricot 2-way, power net, etc., has occupied a considerable amount in the fields of inner foundation, sportswear and the like. The required characteristics in the field of sportswear have been advanced, and in addition to fashion and fashion, comfort such as sweat-absorbing quick-drying and heat retention, as well as warm-up effects and reduction of fatigue by applying pressure on muscles or around muscles Some wear has been effective.

[0003] However, no sufficient study has been made on the promotion of motor function by wearing wear, that is, the function of enhancing instantaneous power or endurance by wearing wear, and at present there is no excellent wear as wear. . For example, in the invention described in Japanese Patent Application Laid-Open No. 8-117382, wear of a wear brings about a taping effect, and muscle fatigue is less likely to occur or the exercise has good follow-up performance. The effect of increasing the instantaneous power and endurance of time is not enough.

Further, the invention described in Japanese Patent Application Laid-Open No. 149959/1997 claims an effect of increasing muscle power, but it cannot be said that the object of the present invention is to improve instantaneous power and endurance. According to the research of the present inventors, the level of the tightening force is more important than the partial application of the tightening force in order to improve the instantaneous force and endurance.
In the invention of Japanese Patent Application Laid-Open No. 959, the motor function promoting effect aimed at by the present invention cannot be obtained.

Therefore, at present, sufficient consideration has not been given to the promotion of motor function.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wear excellent in a function of enhancing instantaneous power and endurance during exercise.

[0007]

The present inventor has studied conventional sportswear having excellent elasticity and its athletic functionality. As a result, the cloth for wear has a certain elongation characteristic,
The present inventor has found that, when a certain wear design is performed using this cloth, the present invention is particularly excellent in motor functionality, and has completed the present invention.

That is, the present invention relates to a garment using a knitted fabric containing a polyurethane elastic fiber having an average tangential strength of 3000 g or less at the time of the third 80% elongation during repeated 80% elongation at the same time. 5-20g in standard condition
Wear with excellent motor function characteristics designed at f / cm ² ,
It is. Hereinafter, the present invention will be described in detail.

[0009] The knitted fabric used in the wear of the present invention is characterized in that the average strength of the process at the time of the third 80% elongation in the repeated 80% elongation at the same time is 3000 g or less. Kato Tech Co., Ltd.
Using a K2-axis fatigue tester, 9 cm * 9 cm (including a 1 cm gripping allowance) samples were placed at six locations on each side (2 in total).
(0 places) Independently chucked and measured by a method of detecting each generated stress.

The wear elongation rate when exercising with wear that comes into close contact with the skin such as spats is as high as 80% in the local area, and it can be said that this is a more realistic evaluation method than the conventional uniaxial measurement of the warp or the horizontal axis. . Usually, a fabric containing polyurethane elastic yarns exhibits hysteresis when stretched, and when stretched several times, the stress is reduced as compared to the first time. Therefore, the present invention is characterized in that the history average strength is 3000 g or less at the time of the third 80% elongation close to actual wear. If the average strength after the third 80% elongation is 3000 g or less, the muscles and joints will not be too tightly tightened even if the wear elongates due to skin elongation during exercise when worn as wear, preventing movement. Not reduce the motor function.

However, if the strength exceeds 3000 g, the cloth is worn as wear, and when the cloth elongates due to exercise, a strong resistance is given to the human body, which impairs the exercise ability. In other words, for example, flexion and extension of the leg hinders movement of the knee joint, and flexion and extension of the arm hinders movement of the elbow joint, which is not preferable. In repeated 80% elongation, the average elongation at the third 80% elongation was 300.
The method for producing a knitted fabric containing polyurethane elastic fibers of 0 g or less is not particularly limited, and can be realized with copolymerized polyether-based polyurethane and polyester-based polyurethane used in general clothing. Ether polyurethanes are effective and particularly preferred.

The copolymerized polyether-based polyurethane is
Copolymerized polyalkylene ether diol, mainly 4,
4 ′ refers to a polyurethane obtained from an aromatic diisocyanate composed of diphenylmethane diisocyanate and a difunctional diamine, and a number average molecular weight of a urethane portion in the polyurethane is 7000 to 9500;
A polyurethane elastic fiber in which the number average molecular weight of the urea portion is 700 to 1200 is preferable.

The polyester-based polyurethane includes, for example, polyester diol, ethylene glycol,
One obtained by polycondensation of one or more diols such as 1,4-butanediol and neopentyl glycol with a dicarboxylic acid such as adipic acid. Polyurethane fibers used in the present invention may optionally contain a known organic or inorganic compounding agent, for example,
Gas yellowing inhibitor, ultraviolet absorber, antioxidant, fungicide,
Barium sulfate, aluminum silicate, magnesium silicate,
Inorganic fine particles such as calcium silicate, and anti-adhesive agents such as calcium stearate, magnesium stearate, polytetrafluoroethylene, and organopolysiloxane may be appropriately blended.

In the present invention, the fineness of the polyurethane elastic fiber is not particularly limited as long as it satisfies the elongation property, but a fiber of 15 denier to 140 denier is desirable. The knitting structure is not limited to warp knitting, weft knitting or the like, and a tricot half structure, a satin structure, a power net structure, a satin net structure, a sheet of paper, a smooth, a milling structure, and the like are suitably used. The mixing ratio of the elastic yarn may be in a very wide range depending on the structure and the thickness of the yarn to be used, but is preferably 3 to 40%.

The draft when the elastic yarn is compounded is preferably 1.5 to 3.5 times, and is appropriately selected according to the commercial value. The mode of knitting is not particularly limited, and the bare yarn of the elastic fiber may be knitted as it is or the cover yarn may be knitted. The wear excellent in athletic function according to the present invention is characterized in that the wear is designed to have a wearing pressure of 5 to 20 gf / cm ² in a standard state. Investigating a wear design to promote motor function, that is, to improve instantaneous power and endurance, at least one of the main muscles and joints used at the time of exercise in addition to the elongation characteristics of the knitted fabric described above is 5 to 5. 20g
It was found that it was necessary to compress with a force of f / cm ² .

Therefore, the term "wearing pressure" as used in the present invention means the pressure of the main muscles and joints used during exercise, and the main muscles and joints used during exercise are the most powerful when performing exercise. Refers to a muscle that enters or a joint that has a large range of motion. Specifically, for running motion, rectus femoris, biceps femoris and hip joints; for skating, rectus femoris, biceps femoris and knee joints; Refers to the biceps, triceps and shoulder joints. The standard state is a state in which the body is worn without local bias, kept standing, and weakened. In the case of muscle, a multipoint clothes pressure gauge manufactured by AIM Co., Ltd. In the case of a muscular belly, in the case of a joint, it refers to a value measured at a small curvature portion in the joint.

The main muscles and joints used during exercise
At least one place is 5 to 20 gf / cm ^TwoPressured by the power of
As a result, the following effects are expected. One is to fix the joints
By setting, the wobble of the range of motion of the joint is eliminated,
Improves instantaneous power by eliminating power loss during exercise
The effect is. Another is when the muscles stretch and contract
The muscle fibers slide and change the length of the muscle,
There is pressure, and the pre-tensioning of the muscle fibers makes the run smoother
Muscle contraction is likely to occur
As a result, the instantaneous power can be expected to increase. And even more
Proper tightening increases the return of venous blood to the heart.
The oxygen and ATP lost due to exercise
Is performed, the muscle efficiency during exercise does not decline, the result
It will improve endurance.

The wear pressure is 5 to 20 gf /
In order to make cm ² , it is sufficient to consider a clearance rate at the time of design. The human body size classification and standard dimensions are described in detail in JISL0102 and JISL0103, and based on this, the clearance rate may be considered. When the denier of spandex is about 20d to 30d, the fabric size of the muscles and joints used during exercise is -3 against the standard size.
It is good to design it from 0% to -50%. Also, from 30d to 5
In the case of 0d, -15% to -40% of the standard size, 5
-10% to -30% of standard size when 0d or more
It is good to design. However, even if the denier is the same, the compression pressure is slightly different due to the physical properties of the fabric. Therefore, it is desirable to make a prototype of an actual garment and confirm the compression pressure with a model having a body shape close to the standard.

If the tightening pressure as wear is strong, ie, the main muscles and joints used during exercise are 20 gf / cm
If you press with more than ² forces, you wear it as a garment, and if you exercise, clothing tension increases further due to muscle tension and movement of joints, making it difficult to move, not only impairing motor function, but also venous blood to the heart. Is not preferable because congestion is likely to occur due to the inhibition of the annular flow rate. In addition, when the wear of the main muscles and joints used during exercise is 5 gf / cm ² or less, the tightening force is too weak to exert these effects, and only the instantaneous force or endurance near bare feet is exerted. .

The wear of the present invention having excellent athletic functions has a moderate pressure in the circumferential direction of muscles or joints used during exercise, and furthermore, the cloth has good elongation characteristics. This is a piece of wear that has a small change in the pressure applied for the extension due to the movement, especially in the longitudinal direction. Therefore, the wear is excellent in the motor function characteristics when the wear is worn, that is, has a high effect of increasing the instantaneous power and endurance.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to embodiments. Physical properties and motor function were measured by the following methods. 1. Biaxial elongation of knitted fabric A biaxial fatigue tester manufactured by Kato Tech Co., Ltd. was used. The sample is 9cm * 9cm (including 1cm of grip), and each four sides are independently chucked by 6 places,
The process was performed by detecting the generated stress in each process. The elongation speed is 10 mm / sec.
The measurement was repeated three times and output to a chart. History average strength (g) at the time of the third 80% elongation from the chart
Was read and used as an evaluation value. 2. Wearing pressure Wear it with no local gap, keep standing, and relaxed. Measured with a multi-point clothing manometer manufactured by AMC Corporation using a muscle abdomen or joint with small curvature in the muscle. . It is measured by repeating attachment and detachment three or more times, and the average value (gf
/ Cm ² ). 3. Motor function measurement: KIN-CO manufactured by Japan Chattanooga Co., Ltd.
MAP was used. Monitor is exercising 1
5 or more men or women between 8 and 30 years old
Wear was measured. The measurement was performed for each garment for 2 days or more in a random order, and the best data was used as the measurement data. 3. Instantaneous force (1) Knee joint Fix the upper body and waist in a chair, attach a load cell to an ankle, and determine the position of the chair and the position of the load cell according to each person. The range of motion of each person's leg is checked and compared with the range of motion during exercise.
° / sec), extend and bend at full force in the con-con measurement mode. When a stable value is obtained three or more times, the average is taken as the measured value. The result was represented by the total force (power) at the time of extension, and expressed as a ratio to the same result with bare feet (result of sample / result of bare foot * 100).

(2) In the case of other joints The load cells are attached to the hip joint and the shoulder joint at the action parts of each joint (knee in the case of the hip joint, elbow in the case of the shoulder joint). Was set, and the same measurement as that for the knee joint was performed. 3. Endurance Similar to the measurement of the instantaneous force, the position and the range of movement are adjusted, and in the preliminary test, the maximum load that each person can continuously exercise for 2 minutes is determined. The test is isotonic and in the Con-con measurement mode, with 2 minutes of exercise and 2 to 5 minute breaks repeated three times. In the evaluation, the first half was 10 seconds after about 30 seconds from the start of the first exercise, the second half was 10 seconds immediately before the end of the third exercise, and the first and second half forces were calculated. At the same time, the electromyogram of the muscles used mainly (for example, in the case of the knee joint, hip joint, rectus femoris,
The biceps femoris) was taken in with a biological amplifier manufactured by NEC Sanei, and the myoelectricity (microvolt) generated in the first half and the second half was measured, and the integrated value (myoelectricity) for 10 seconds was obtained. And
Power / myoelectricity was evaluated as exercise efficiency.

[0023]

Example 1 150 parts by weight of polytetramethylene glycol having an average molecular weight of 1,800 (hereinafter simply referred to as "parts")
4,4'-diphenylmethane diisocyanate 31.2
The parts were reacted with stirring in a nitrogen gas stream at 95 ° C. for 90 minutes to obtain a prepolymer having an isocyanate group remaining. Then, after cooling to room temperature, 270 parts of dry dimethylacetamide was added and dissolved to obtain a prepolymer solution.

On the other hand, 2.34 parts of ethylenediamine and 0.37 parts of diethylamine were dissolved in 157 parts of dry dimethylacetamide, and this was added to the above prepolymer solution at room temperature to obtain a polyurethane having a viscosity of 1,900 poise (30 ° C.). A solution was obtained. To the viscous polymer solution thus obtained, a reaction product of P-cresol, dicyclopentadiene and isobutylene having a molecular weight of about 2300 was added to 2% by weight (hereinafter simply referred to as%) based on the polyurethane solid content, and 2- (2′-hydroxy-3) was used. '-T-butyl-5'-methylphenyl) -5-chloro-benzotriazole 0.7%
And 0.5% of titanium oxide were dispersed in dimethylacetamide with a homomixer and added. 8% of polyvinylpyrrolidone having a number average molecular weight of 10,000 was added to this solution to prepare a spinning dope.

The spinning speed of this polymer solution was 600 m /
Minutes, dry spinning at hot air temperature of 330 ° C, 15 denier / 2
The filament yarn was a polyurethane elastic yarn. Using a 40 denier polyurethane elastic fiber obtained by the dry spinning method and a 30 denier polyester fiber, knit into a half structure with a 28 gauge tricot knitting machine, and perform refining, presetting, dyeing, and final setting by a usual method. Was. Table 1 shows the measurement results of physical properties of the obtained knitted fabric.

The knitted fabric is tailored into spats so that the clearance of the thigh, the knee and the lower leg is -30%.
It was worn by six male panelists of the same size, and after confirming the pressure applied to the rectus femoris, biceps femoris and knee joints, motor function (instantaneous power and endurance) was examined at the knee joint. The wearing feeling was also examined. Table 1 shows the results. This spats proved to be very excellent in motor function.

[0027]

Example 2 The short-sleeved, one-piece type swimsuit for aqua sports was made from the cloth of Example 1 so that the clearance of the shoulders, thighs, knees, and lower thighs was -35%. After wearing it by five persons and confirming the pressure applied to the shoulder joint, motor function characteristics (sudden force and endurance) were measured at the shoulder joint.
Table 1 shows the results. In addition, as a result of a wearing test performed in an actual pool, wearing feeling and data shown in Table 1 were obtained, and it was found that the exercise function was excellent.

[0028]

Example 3 In Example 1, the polyurethane fiber was changed to 7
Spats were prepared and evaluated in the same manner as in Example 1 except that 0 denier and polyester fiber were set to 50 denier. As a result, the results shown in Table 1 were obtained, and it was confirmed that the spats were excellent in motor functionality.

[0029]

Comparative Example 1 Spats were prepared and evaluated in the same manner as in Example 1 except that polyurethane fibers of 20 denier were used. As a result, the results shown in Table 1 were obtained. It turned out that.

[0030]

Comparative Example 2 1000 g of polytetramethylene glycol having an average molecular weight of 1200 (parts by weight, the same applies hereinafter) and 4,
312 g of 4 'diphenylmethane diisocyanate,
The reaction was conducted while stirring at 95 ° C. for 90 minutes in a nitrogen gas stream to obtain a prepolymer having an isocyanate group.
Then, after cooling to room temperature, 2360 g of dry dimethylformamide was added and dissolved to obtain a prepolymer solution. On the other hand, 23.4 g of ethylenediamine and 3.7 g of diethylamine were mixed with 1570 g of dry dimethylformamide.
g), and the prepolymer solution was added thereto at room temperature to obtain a polyurethane solution having a viscosity of 1200 poise (30 ° C.).

To the polymer solution thus obtained was added 2.5% by weight of hydrotalcite (hereinafter referred to as%) 4,4'butylidene-bis (3-methyl-6-tert-butylphenol) 2
%, 2- (2'-hydroxy-3'-tert-butyl-5 '
0.7% of (-methylphenyl) -5-chloro-benzotriazole was added and dry-spun to obtain a polyurethane elastic fiber of 40 denier / 4 filaments.

Spats were prepared and evaluated in the same manner as in Example 1 except that this 40-denier elastic fiber was used, and the results shown in Table 1 were obtained. It turned out that it was.

[0033]

Comparative Example 3 A swimsuit was prepared in the same manner as in Example 1 except that the spats were set at a rate of -60%.
As a result of the evaluation, the results shown in Table 1 were obtained, and it was found that the motor function was inhibited due to the excessively high compression pressure when worn.

[0034]

Comparative Example 4 Spats were prepared based on the example of FIG. 3 described in JP-A-9-149959, and evaluated in the same manner as in Example 1 of the present invention. As a result, the results shown in Table 1 were obtained. No motor function enhancement effect was observed.

[0035]

[Table 1]

[0036]

The wear of the present invention having excellent athletic functionality is:
When used for sportswear that fits the body, the instantaneous power at the time of exercise is increased, and the power at the time of exercise is easily exerted. At the same time, the endurance is also increased, so that the wear can be made less tiring during prolonged exercise. Therefore, it is suitably used for sportswear such as suits with excellent elasticity, underwear and spats worn in soccer, athletics, skating, swimming, aerobics and the like.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI D04B 1/18 D04B 1/18 21/00 21/00 B // A41B 9/02 A41B 9/02 Q A41D 7/00 A41D 7 / 00 B D01F 6/70 D01F 6/70 Z

Claims (5)

[Claims] 1. In the repeated 80% elongation at the same time, the average elongation at the time of the third 80% elongation is 3000 g.
A garment using a knitted fabric containing a polyurethane elastic fiber as described below, the garment having excellent motor function characteristics designed to have a compression pressure of 5 to 20 gf / cm ² in a standard state. 2. A wear having excellent motor functionality, wherein the pressure applied to at least a part of the rectus femoris, the biceps femoris, the knee joint or the hip joint of the lower limb thigh is designed as described in claim 1. 3. A wear excellent in athletic functionality, wherein the pressure applied to at least a part of the biceps, triceps, and shoulder joint of the upper limb is designed as described in claim 1. 4. The athletic functional wear according to claim 2, which is designed for spats, underwear, speed skate wear, ski wear, and water wear. 5. The wear having excellent athletic functionality according to claim 3, which is designed for a fit shirt, a swimsuit, a leotard, and sports underwear.