JP2011099179A - Fabric reducing load of exercise - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fabric comfortable when worn, and reducing sticky feeling and cool feeling in much perspiration caused by a long-time exercise or the like, and also reducing the load of such an exercise. <P>SOLUTION: The fabric reducing the load of exercise has an increasing rate of friction coefficient of 100% or less when applied with moisture on at least one side surface thereof, and has a contact cool feeling value of 240 W/m<SP>2</SP>×°C or less when applied with moisture of 200 g/m<SP>2</SP>. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an exercise load reducing fabric. More specifically, the present invention relates to a fabric suitable for clothing that is excellent in dryness and does not feel sticky due to sweat when sweating due to exercise or the like, and further excellent in reducing the load during exercise.

  In clothing such as sportswear, the clothing absorbs sweat perspired during exercise, etc., so that the sweat present on the skin and the sweat present on the clothing come into contact with each other, producing a so-called stickiness or chilliness after exercise. Sometimes. In addition, clothing and skin may stick together, which may hinder movement during exercise. This feeling of stickiness, feeling of cooling, and feeling of movement inhibition are particularly unpleasant feelings when sweating in large quantities due to a long-time exercise such as marathon or soccer.

As a method for preventing such discomfort, it is effective to transfer moisture due to sweating from the skin side to the front side of the clothes and leave no moisture on the skin side, and various fabrics are being studied. .
For example, the following Patent Document 1 proposes a fabric that has high water absorption and suppresses stickiness when sweating a large amount of sweat by defining the saturated water absorption amount of the fabric, the airflow resistance at the time of saturated water absorption, and the degree of surface irregularity. ing. However, although there is a description of motion restraint due to sticking, specific numerical values are not shown, which is insufficient to reduce the motion restraint.

  Patent Document 2 below proposes a fabric that uses water-repellent fibers to repel sweat, reduce the feeling of stickiness, and reduce the frictional force when wet. However, since water-repellent fibers are used, sweat is not absorbed by the clothes and falls down or stays between the clothes and the skin, and the reduction in stickiness is insufficient. Is also inadequate, and the comfort is also poor.

Further, in Patent Document 3 below, a structure that does not leave moisture on the back side of the fabric by using a fiber having excellent water absorption capability such as cotton on the front side of the fabric and a fiber having poor water absorption capability such as polyester filament on the back side of the fabric. In addition, a fabric that suppresses a sticky feeling and a cold feeling has been proposed. However, although a certain effect can be exhibited depending on the type of yarn used, it is insufficient to suppress the sticky feeling, especially when a large amount of water is contained due to long-term exercise or the like. There is a limit to the reduction effect. In addition, if a hydrophilic fiber such as cotton is used, clothes may become heavy due to retention of moisture and quick drying may be deteriorated, which is not preferable for sports clothing.
Thus, the present condition is that the fabric which suppresses a sticky feeling and a cold feeling at the time of a lot of sweating, and reduces the load at the time of exercise is not yet found.

JP 2001-303408 A Japanese Patent No. 3219992 JP 2001-81652 A

  The problem to be solved by the present invention is to provide a fabric that is comfortable when worn, reduces the feeling of stickiness and cooling when sweating a lot during long periods of exercise, and further reduces the load during exercise. It is.

  As a result of intensive studies and experiments conducted in order to achieve the above-mentioned problems, the present inventor has found that the rate of increase in the coefficient of friction of the fabric when absorbing a large amount of moisture relative to the coefficient of friction of the fabric during drying and a large amount of moisture. It has been found that the above-mentioned problems can be achieved by a fabric having a contact cooling sensation value when absorbing water is not more than a specific value.

That is, the present invention is as follows.
[1] The friction coefficient increase rate at the time of moisture application on at least one surface is 100% or less, and the contact cooling sensation value at the time of 200 g / m ² moisture application is 240 W / m ² · ° C. or less. An exercise load reducing fabric.

  [2] The fabric according to [1], wherein the water absorption time of the fabric is 5 seconds or less.

  [3] The fabric according to [1] or [2] above, wherein a difference in height between the convex portion and the concave portion of any one surface layer of the fabric is 0.15 to 0.50 mm.

  [4] The ratio of the specific surface area of the fibers arranged on the front side of the fabric to the specific surface area of the fibers arranged on the back side (front / back specific surface area ratio) is more than 1.00 and 4.00 or less. The fabric according to any one of 1] to [3].

  [5] The fabric according to any one of [1] to [4], wherein the thickness of the fabric is 0.70 to 1.2 mm.

  By producing clothing such as sportswear, inner, outerwear, etc. using the exercise load reducing fabric according to the present invention, it is comfortable when worn and has a sticky feeling and a feeling of cooling when sweating a lot due to prolonged exercise etc. The load at the time of exercise | movement is reduced with the excellent comfortable feeling of wear, and the clothes which are easy to move can be obtained.

It is an example of the exercise | movement load reduction knitted fabric organization chart of this invention. It is an example of the exercise | movement load reduction knitted fabric organization chart of this invention. It is an example of the exercise | movement load reduction knitted fabric organization chart of this invention. It is an example of the exercise | movement load reduction knitted fabric organization chart of this invention. It is an example of the exercise | movement load reduction knitted fabric organization chart of this invention. It is an example of the conventional knitted fabric organization chart used in Comparative Example 3.

Hereinafter, the present invention will be described in detail.
The exercise load reducing fabric of the present invention is characterized in that the rate of increase in the coefficient of friction when water is applied to at least one surface is 100% or less. The rate of increase in the friction coefficient is preferably 80% or less, more preferably 60% or less. If the friction coefficient increase rate at the time of moisture application on at least one surface of the fabric is within this range, when the surface is worn as a skin surface of clothing or the like, it sticks with sweat and is easy to move without hindering movement. The load can be reduced.
If the coefficient of friction increase rate at the time of moisture application exceeds 100% on both sides of the fabric, even if either side of the fabric is used as the skin surface of clothing, it sticks to the skin due to sweat absorption, bending and stretching of the arm during exercise In this movement, the cloth hinders the movement, and the cloth becomes hard to move and easily fatigued.

The measuring method of the coefficient of friction increase rate at the time of water | moisture-content provision of the fabric is as follows.
Using HEIDON-10 manufactured by Shinto Kagaku Co., Ltd., a 5 cm × 5 cm sample conditioned at 20 ° C. and 65% RH for 24 hours is prepared, and a load of 23.5 g is attached to the end of the sample. First, the dry sample is placed on the measuring instrument sample stage, and the friction coefficient (A) when the sample starts to slide when the sample stage is tilted is measured. Next, 0.5 cc of water is placed in a polka dot shape with a micropipette on the sample stage, the sample is placed thereon, the sample stage is tilted after 30 seconds, and the coefficient of friction (B) when the sample starts to slide is measured. . The coefficient of friction increase rate is calculated by the following equation (1):
Friction coefficient increase rate (%) = {(B−A) / (A)} × 100% Formula (1)

The exercise load reducing fabric of the present invention has a contact cooling sensation value of 240 W / m ² · ° C. or less when 200 g / m ² of moisture is applied on the surface where the coefficient of friction increase rate when applying moisture is 100% or less. It is characterized by being. The contact cooling sensation value is preferably 220 W / m ² · ° C or less, more preferably 200 W / m ² · ° C or less, and still more preferably 180 W / m ² · ° C or less. Further, the contact cooling sensation value is desirably 120 W / m ² · ° C. or more. When the temperature is less than 120 W / m ² · ° C., the unevenness of the fabric becomes extremely large, and the touch becomes worse.

Moisture application at 200 g / m ² is a condition that assumes the amount of moisture in the sweat that the fabric absorbs when exercising to sweat gently, such as when jogging is performed for 30 minutes or more. The degree of stickiness in this state can be evaluated by the contact cooling sensation value. In the present invention, the contact cooling sensation value is represented by the maximum value (designated as Qmax) of instantaneous heat transfer measured using Thermolab II manufactured by Kato Tech.

  This apparatus measures the amount of heat transferred when a heated hot plate is placed on a sample. Specifically, after conditioning the sample used for measurement in an environment of 20 ° C. and 65% RH for 24 hours, the sample was sampled to 8 cm × 8 cm and placed with the fabric measurement surface facing upward. The maximum amount of heat transfer at the moment when a hot plate heated to 30 ° C. in a 65% RH environment is placed is measured. As a method for applying moisture at the time of measurement, water may be applied so that the weight of the sample sampled to 8 cm × 8 cm is +1.28 g by spraying on the measurement surface side of the sample. The water temperature in the spray bottle at this time is 20 ° C.

If moisture remains on the side of the fabric in contact with the hot plate, the thermal conductivity of water is high, so that a lot of heat is taken away from the hot plate, resulting in an increased contact cooling sensation value. In other words, a sample having a large contact cooling sensation means that the feeling of stickiness is large, and the contact cooling sensation value that gives a feeling of stickiness exceeds 240 W / m ² · ° C. by the above measuring method. In a cloth that has been improved in conventional stickiness, it was difficult to improve the contact cooling sensation value when a large amount of moisture was applied as in the present measurement. The contact cooling sensation value is 240 W / m ² · ° C. or less, and it is understood that the stickiness is improved even when a large amount of moisture is applied.

  The cloth for reducing exercise load of the present invention is desirably subjected to water absorption processing, and the water absorption time of the cloth is preferably 5 seconds or less. When the fabric has water absorption, the fabric can absorb a small amount to a large amount of sweat, and the sweat does not remain on the skin surface, and the sticky feeling, the feeling of cooling, and the exercise load are easily reduced. Any water absorbing agent can be used. The amount of the water absorbing agent added is preferably 3 to 10% with respect to the weight of the dough. If it is less than 3%, the water absorbency of the fabric may be insufficient, and the stickiness of the fabric will be increased, which is not preferable. If it exceeds 10%, water absorption is sufficient, but there may be a problem in terms of dyeability and cost. The water absorption time of the fabric is more preferably 2 seconds or less. If the water absorption time exceeds 5 seconds, it takes time to absorb the water, resulting in poor diffusibility on the fabric surface side, and moisture tends to remain on the fabric back side. Therefore, the feeling of stickiness may increase, and the resistance during exercise may also increase.

The measuring method of water absorption time is as follows.
A 10 cm × 10 cm sample conditioned at 20 ° C. and 65% RH for 24 hours is placed on a plastic cup with the measurement surface facing up. To the sample, 0.04 cc of water is dropped at once with a micropipette, and the time until the dropped water is sucked is measured.

The cloth for reducing exercise load of the present invention has a friction coefficient increase rate of 100% or less at the time of water application, and a contact cooling sensation value of 240 W / m ² · ° C. when water of 200 g / m ² is applied. It is preferable that the following surface has unevenness, and it is preferable to use this uneven surface layer on the skin side of clothing or the like because the sticky feeling, the cold feeling, and the sticky feeling can be reduced. As the degree of unevenness, the difference between the convex part and the concave part is more preferably 0.15 to 0.50 mm, more preferably 0.20 to 0.50 mm, still more preferably 0.23 to 0.45 mm, and most preferably. Is 0.24 to 0.40 mm.

  If the difference between the height of the convex portion and the concave portion is less than 0.15 mm, the unevenness is too small, so that it is difficult to achieve a reduction in stickiness. If the difference in height between the convex part and the concave part exceeds 0.50 mm, the convex part may be bent when pressure is applied by wearing or the like, resulting in a large contact area and a sticky feeling. Moreover, since it becomes a thing with large thickness as cloth | dough and may impair the wearing feeling, such as stuffiness, it is unpreferable.

The difference in height between the convex part and the concave part is obtained by taking a cross-sectional photograph of the fabric with an electron microscope or the like, and using the back side of the measurement surface of the fabric as a reference, the height to the convex part on the measurement surface side of the fabric is 5 locations. Measure and average (average B). Similarly, five heights from the back surface side to the concave portion on the measurement surface side are measured and averaged (average value A). The difference in height between the convex portion and the concave portion is calculated from the average value A and the average value B by the following formula (2):
Difference in height between convex portion and concave portion = BA Formula (2)

  In order to obtain unevenness on the surface of one side of the fabric, in the case of a knitted fabric, it is preferable to use a structure using tack knitting such as tack reversible, dimple mesh, and comfort as the knitting structure. It is also effective to remove the needle on the back side of the fabric.

  In the exercise load reducing fabric of the present invention, the ratio of the specific surface area of the fibers arranged on the front side of the fabric and the specific surface area of the fibers arranged on the back side (front / back specific surface area ratio) exceeds 1.00 and 4.00. Or less, more preferably 1.03 to 3.00, and still more preferably 1.05 to 2.00.

In the present invention, a surface on which fibers having a large specific surface area are arranged is referred to as a front side or a front surface, and the other surface is referred to as a back side or a back surface. The front surface and the back surface that are usually called at the time of manufacturing the knitted fabric do not necessarily need to match, but preferably match.
It is desirable that the front side of the fabric of the present invention is the outside air side of the garment and the back side is the skin side of the garment. By doing so, it is possible to express capillary action and move moisture from the skin side to the outside air side. Moisture does not remain on the skin even when sweating, and the feeling of stickiness and coldness when worn can be reduced.

  When the ratio of the specific surface area of the fibers arranged on the front side of the fabric to the specific surface area of the fibers arranged on the back side of the fabric (front / back specific surface area ratio) is 1.00 or less, moisture is retained on the back side of the fabric. Therefore, moisture becomes difficult to move from the back side to the front side of the fabric, and a sticky feeling or a feeling of cooling when worn is felt, which becomes uncomfortable. When the ratio of the specific surface area of the fibers arranged on the front side of the fabric and the specific surface area of the fibers arranged on the back side of the fabric (front / back specific surface area ratio) exceeds 4.0, moisture from the back side of the fabric to the front side Although the movement is improved, the fineness of the fibers used inevitably becomes extremely fine on the front side of the fabric and extremely fine on the back side of the fabric, which may deteriorate the pilling performance on the fabric surface side and the touch on the fabric back side. .

  The front / back specific surface ratio is calculated as (specific surface area of fibers arranged on the front side of the fabric) / (specific surface area of fibers arranged on the back side of the fabric). The specific surface area of the fibers arranged on the front side or the back side of the fabric is calculated from the cross-sectional area of the cylinder when the single yarn fineness is calculated by the total fineness / number of single yarns in the case of a round cross section and the single yarn is assumed to be a cylinder. The diameter is calculated, and the circumference of the single yarn cross section is calculated therefrom. Then, what was remove | divided by the total fineness from the surface area of the circumference x 10000 m was made into the specific surface area (surface area per 1 g). If the cross section is atypical, measure the circumference of the atypical single yarn cross section taken at the same magnification with an electron microscope and the circumference of the round cross section, calculate the ratio to the circumference of the round cross section, and The specific surface area (surface area per gram) was obtained by dividing the surface area of length × ratio × 10000 m by the total fineness.

  The thickness of the exercise load reducing fabric of the present invention is preferably 0.70 to 1.20 mm, more preferably 0.75 to 1.10 mm, and further preferably 0.80 to 1.05 mm. If the thickness is less than 0.70 mm, the water retention amount of the fabric is not sufficient when a large amount of sweat is applied, moisture tends to remain on the skin surface of the fabric, and a load during exercise may be felt. On the other hand, if the thickness exceeds 1.20 mm, the water retention amount of the fabric is sufficient and the load during exercise is not felt, but it is thick as a shirt and feels heavy and stuffy, making it undesirable for a sports shirt. Sometimes. The thickness of the knitted fabric is averaged by using a thickness measuring device manufactured by Peacock and bringing a measuring part of φ3.0 cm into contact with the knitted fabric with a load of 5 g and measuring three places.

  Examples of the yarn material constituting the exercise load reducing fabric of the present invention include synthetic fiber multifilament yarns such as polyester, polyamide, polypropylene, polyacrylonitrile, regenerated fiber multifilament yarns such as rayon, cupra and acetate, and spans obtained therefrom. Examples thereof include yarn, processed yarn, and mixed yarn. Examples thereof include natural fibers such as cotton, wool, hemp, and silk, and blended yarns thereof, but are not limited thereto. Among these, polyester multifilament is preferable from the viewpoint of quick drying. It is also preferable to use water-absorbing filament fibers such as cupra on the front side of the fabric. Furthermore, it is also preferable to give a stretch property by using a yarn in which polyurethane fiber is covered with the above-mentioned yarn or a single polyurethane fiber in alignment with the above-mentioned yarn. Synthetic fiber multifilament yarns include matting agents such as titanium dioxide, stabilizers such as phosphoric acid, UV absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricants such as aerosil, hindered phenol derivatives Antioxidants such as flame retardants, antistatic agents, pigments, fluorescent brighteners, infrared absorbers, antifoaming agents and the like may be contained.

  The cross-sectional shape of the single yarn of the material constituting the exercise load reducing fabric of the present invention can be any, round, triangular, L-type, T-type, Y-type, W-type, H-type, # -type, Yaba Molds such as molds, dogbone types, and the like, and those having hollow portions in these yarns may be used, and may further have continuous or partial recesses in the yarn length direction of single yarns. . In particular, if an irregularly shaped single yarn cross section such as a W cross section with a large surface area is used on the front side of the fabric, the capillary phenomenon on the front side of the fabric increases, and the effect of transferring moisture on the back side of the fabric to the front side of the fabric increases. The sticky feeling, the feeling of cooling, and the feeling of sticking are alleviated. On the other hand, if it is used on the back side of the fabric, a good touch can be obtained.

  Furthermore, when using an atypical single yarn cross section on the front side or the back side of the fabric, the flatness of the fiber is preferably 2.0 to 4.0, and a high capillary phenomenon and a soft texture can be obtained. When the flatness of the single yarn is less than 2.0, the capillary phenomenon is insufficient or the texture becomes hard. On the other hand, when the flatness of the single yarn exceeds 4.0, a high capillary phenomenon and a soft texture are obtained. However, spinning may become unstable during the spinning stage. In the present invention, flatness refers to a value (L / H) obtained by writing a rectangle circumscribing a single yarn cross section of a cross-sectional photograph taken with an electron microscope or the like and dividing the long side L of this rectangle by the short side H.

As the single yarn fineness of the fiber used on the front side of the exercise load reducing fabric of the present invention, any one can be used, but preferably 0.5 to 3.0 dtex, more preferably 1.0 to 2.3 dtex. .
When the single yarn fineness of the fiber used on the front side of the fabric is less than 0.5, the occurrence of capillarity is large, but the single yarn breaks due to external friction while wearing clothes using this fabric, and a pill state is formed. The pilling performance may deteriorate and the consumption performance may become a problem. Also, the yield and quality of yarn breakage, U%, etc. may deteriorate due to spinning during fiber production. When the single yarn fineness of the fiber used on the front side of the fabric exceeds 3.0 dtex, the capillary phenomenon is difficult to occur, it becomes difficult to move moisture from the back side of the fabric to the front side, and there is no feeling of stickiness or cooling when worn. Pleasant feeling is generated, and the load during exercise increases.

Although the arbitrary single yarn fineness of the fiber used for the back side of the fabric for reducing exercise load of the present invention can be used, it is preferably 1.5 to 4.0 dtex, more preferably 2.0 to 3.5 dtex.
If the single yarn fineness of the fiber used on the back side of the fabric is less than 1.5 dtex, the capillary phenomenon tends to occur and diffuses on the back side of the fabric, resulting in poor skin DRY properties such as stickiness and coolness, and a load during exercise. Can also be large. When the single yarn fineness of the fiber used on the back side of the fabric exceeds 4.0 dtex, it may have a hard texture and the touch may be deteriorated.

  By using a fiber having a relatively small single yarn fineness on the front side of the fabric, it is possible to develop a capillary phenomenon and move moisture from the back side to the front side. If the back side of the fabric of the present invention having such a moisture transfer function is worn as the skin surface of clothing, it is difficult for moisture to remain on the skin surface even when a large amount of sweating, reducing the feeling of stickiness and cooling when worn. Can do. The single yarn fineness is calculated by the total fineness / number of single yarns.

As the total fineness of the material constituting the exercise load reducing fabric of the present invention, those in a range generally used in clothing and the like can be used, and among them, those having a total fineness of 16 to 200 dtex are preferable. .
The material used in the fabric for reducing exercise load of the present invention may have crimps and fluff, and the front side of the fabric is mainly a low crimped yarn that is prone to capillary action, and the back side of the fabric mainly has skin. A highly crimped yarn with a small contact area is preferable. The low crimped yarn is a yarn having a crimped elongation rate of 0 to 25%, and the high crimped yarn is a yarn having a crimped elongation rate of 25 to 250%. The crimp elongation of the false twisted yarn is measured under the following conditions.

The upper end of the crimped yarn is fixed, a load of 1.77 × 10 ⁻³ cN / dt is applied to the lower end, and the length (A) after 30 seconds is measured. Next, the load of 1.77 × 10 ⁻³ cN / dt was removed, the load of 0.088 cN / dt was applied, and the length (B) after 30 seconds was measured. Ask for:
Crimp elongation (%) = {(B−A) / A} × 100 Formula (3)

The exercise load reducing fabric of the present invention preferably does not return the absorbed moisture to the skin side, and the wetting return rate of the fabric is preferably 15% or less, more preferably 10% or less.
If the wetting return rate of the fabric exceeds 15%, the skin DRY properties such as a sticky feeling and a feeling of cooling may deteriorate, and the load during exercise may also increase. The measuring method of the wetting return rate is as follows.

In an environment of 20 ° C. and 65% RH, 1 cc of water is placed in a polka dot shape on the acrylic plate. The weight (A) of a 10 cm × 10 cm sample collected from a fabric conditioned for 24 hours in the same environment was measured, and the sample was gently placed with the skin face down, and the weight of the sample after 1 minute. (B) is measured. The weight (a) of a 10 cm × 10 cm filter paper conditioned for 24 hours in the same environment is measured and placed so that the skin surface of the sample is on top, and the filter paper is placed thereon. Then, a load of 0.5 g / cm ² is placed on the filter paper for 30 seconds. Thereafter, the weight (b) of the filter paper is measured and calculated by the following formula (4):
Wetting return rate (%) = {(ba) / (BA)} × 100% Formula (4)

  The exercise load reducing fabric of the present invention is not particularly limited with respect to the structure and the like as long as it is obtained as a fabric such as a woven fabric or a knitted fabric. For example, a woven fabric can be composed of a single woven fabric, a double woven fabric, a horizontal double woven fabric, a vertical double woven fabric, a vertical / horizontal double woven fabric, etc., and a knitted fabric can be composed of a single jersey, a double jersey, a single tricot, or a double tricot. , Single raschel, double raschel and the like. In particular, in a woven fabric or a knitted fabric such as a double woven fabric or a double jersey, the front and back sides of the fabric are clear, and moisture on the skin side may not easily remain due to the movement of moisture to the front side of the fabric. Furthermore, by making the density of the knitted fabric or woven fabric constituting the surface layer on the fabric front side larger than the density of the knitted fabric or woven fabric constituting the surface layer on the skin side, a capillary phenomenon appears and moisture is transferred from the skin side to the front side. Since it can be moved, it is difficult for moisture to remain on the skin surface even when a large amount of sweat is generated, and the feeling of stickiness and coldness during wearing can be reduced. Methods for changing the density of the front and back include a method of making the single yarn fineness of the fibers used on the front and back different, a method of varying the number of courses and wells of the knitted fabric, the warp yarn density and the weft yarn density of the woven fabric . For example, as for the density of the front and back in the knitted fabric, the number of wells on the back side is 1.0 to 4.5 times the number of wells on the front side, preferably 1.2 to 4.2 times, more preferably 1.3 to 4. This can be achieved by making it 0 times.

  In this case, if the front side density is less than 1.0 times the skin side density, the capillary phenomenon is difficult to occur, and the improvement of stickiness due to moisture transfer due to the capillary phenomenon and the load reduction effect during exercise cannot be expected. When the density on the front side exceeds 4.5 times the density on the back side, the moisture transfer due to capillary action is large, but the skin side becomes a rough structure, the texture such as tingling feeling when worn is worse, and the snacking property is also bad. There is concern about becoming.

  In the case of a knitted fabric, the density of the front and back is measured by using a densimeter, a linen tester or the like for the number of stitch loops per width of 2.54 cm (1 inch). Here, the number of loops is the number of stitches of the knit loop, and stitches such as tack loops and sinker loops are not included in the number of loops. The method of changing the density of the front side and the skin side of the knitted fabric is not particularly limited, but the method of making the knitted fabric skin side a needle-free structure or the method of using a double circular knitting machine with different numbers of gauges on the dial side and cylinder side A method of forming a needle punched structure after using the circular knitting machine is preferable.

As a method for producing the exercise load reducing fabric of the present invention, in the case of a woven fabric, a WJL loom, an AJL loom, a rapier loom, a needle loom, or the like can be used. In the case of knitting, a flat knitting machine, a single circular knitting machine, a double circular knitting machine, a tricot knitting machine, a Russell knitting machine, or the like can be used.
The basis weight of the exercise load reducing fabric of the present invention is not particularly limited, but is preferably 50 to 300 g / m ² , more preferably 80 to 250 g / m ² .

You may have the fluff by raising on the back side of the fabric for reducing the exercise load of the present invention. As a result, when the back side of the fabric is used on the skin surface of clothes, the contact area with the skin is reduced, which is effective in reducing the feeling of stickiness and cooling, but the surface of the fabric is raised for the purpose of improving the texture. Or brushed on both sides of the fabric. Furthermore, as raising processing, there are a method performed before dyeing processing and a method performed after dyeing processing, either of which may be used.
The garment manufactured so that the front side of the fabric for reducing exercise load of the present invention is on the outside air side and the back side is on the skin side can suitably exhibit the effects of the present invention.
The exercise load reducing fabric of the present invention is particularly suitable for clothing applications that require a sweat treatment function such as sportswear and inner, but is not limited thereto, and clothing such as outer and lining, bedding such as sheets, and further It can also be applied to sanitary articles such as incontinence pants and diapers, and exhibits the effect of reducing the feeling of stickiness and cooling due to moisture.

Hereinafter, the present invention will be described in detail by way of examples. Of course, the present invention is not limited to this.
The evaluation in the examples was measured by the following method.
(1) Wear test After wearing a shirt made so that the back side of the dyed fabric is on the skin, and resting in an artificial climate room at 28 ° C and 65% RH for 10 minutes, Otake Route A treadmill ORK-3000 manufactured by Kogyo Co., Ltd. was used for 30 minutes of running at 8 km / h, and then rested again for 10 minutes. As shown in Table 1 below, sensory evaluation was performed for the stickiness and cold feeling after running exercise according to the following evaluation criteria:
○: Feels not sticky or cool ×: Feels sticky, feels cold

[Example 1]
A double-different gauge circular knitting machine with a dial side of 18 GG and a cylinder side of 24 GG is used. A polyester W type cross-section processed yarn of 84 dtex / with a single yarn fineness of 2.8 dtex, flatness of 3.0 and specific surface area of 2464 cm ² / g on the cylinder side. Tack made of the structure shown in FIG. 1 by feeding 30f and a polyester round cross-section processed yarn 84dtex / 36f having a single yarn fineness of 2.3 dtex, flatness of 1.0 and specific surface area of 2320 cm ² / g on the dial side. I got a living machine of mesh structure. The ratio of the specific surface area of the polyester W-shaped cross-section processed yarn on the front side and the polyester round cross-section processed yarn on the back side at this time was 1.06. This raw machine was scoured at 80 ° C. for 20 minutes with a liquid dyeing machine, washed with water, and then pre-set at 180 ° C. for 90 seconds with a pinning ratio of 20%. Thereafter, polyester dyeing at 130 ° C., water absorption processing, and water washing were performed with a liquid dyeing machine. Water-absorbing processing was performed by adding SR-1000 manufactured by Takamatsu Yushi Co., Ltd. into a 3% owf dye bath. Then, it extended to the extent that the wrinkles can be taken by a pin tenter, performed the final set of 150 ℃ × 90 seconds, a basis weight of 119g / ^{m 2,} to obtain a two-layer knitted fabric having a thickness of 0.82mm. The number of loops in the well direction on the front side of this knitted fabric is 44 / inch, the number of loops in the well direction on the back side is 10 / inch, and the number of loops in the well direction on the front side is 4. It was 4 times. Moreover, the uneven | corrugated | grooved part existed in the back side of the knitted fabric, and the difference of the height of a convex part and a recessed part was 0.37 mm. Furthermore, the rate of increase in the coefficient of friction at the time of moisture application to the knitted fabric is 30.0%, the contact cooling sensation value at the time of application of moisture 200 g / m ² is 168 W / m ² · ° C., and the water absorption time is 1 second or less. In the wearing test of the shirt obtained from the ground, there was no feeling of stickiness or cooling.

[Example 2]
Using the same circular knitting machine as in Example 1, two single-piece polyester W-shaped cross-section processed yarns 56 dtex / 30f having a single yarn fineness of 1.9 dtex, a flatness of 3.0, and a specific surface area of 3140 cm ² / g are aligned in a cylinder. Polyester circular cross-section raw yarn 84 dtex / 36f having a yarn fineness of 2.3 dtex, flatness of 1.0, and a specific surface area of 2320 cm ² / g was fed at a ratio of 5: 1, and the single yarn fineness of 2.3 dtex on the dial side, flatness 1.0, polyester round sectional yarn of a specific surface area of 2320cm ² / g 84dtex / 36f and single filament fineness 2.3Dtex, flatness 1.0, polyester round sectional yarn of a specific surface area of 2341cm ² / g 110dtex / 48f was alternately fed to obtain a raw material having a tuck mesh structure composed of the structure of FIG. At this time, the ratio of the specific surface area of the polyester W-shaped cross-section processed yarn on the front side and the round cross-section processed yarn on the back side to the polyester round cross-section processed yarn on the back side was 1.29. The raw machine was processed in the same manner as in Example 1 to obtain a two-layer knitted fabric having a basis weight of 153 g / m ² and a thickness of 0.82 mm. The number of loops in the well direction on the front side of the knitted fabric is 38 / inch, the number of loops in the well direction on the back side is 20 / inch, and the number of loops in the well direction on the front side is 1. It was 9 times. Moreover, the uneven | corrugated | grooved part existed in the back side of the knitted fabric, and the difference of the height of a convex part and a recessed part was 0.32 mm. Furthermore, the rate of increase in the coefficient of friction at the time of moisture application to the knitted fabric is 43.3%, the contact cooling sensation value at the time of applying moisture 200 g / m ² is 194 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from the test, there was no stickiness or chilliness.

[Example 3]
Using a double circular knitting machine having 28 GG on both the dial side and the cylinder side, and knitting with the structure of FIG. The raw machine was processed in the same manner as in Example 1 to obtain a two-layer knitted fabric having a basis weight of 142 g / m ² and a thickness of 0.85 mm. The number of loops in the well direction on the front side of this knitted fabric is 45 / inch, the number of loops in the well direction on the back side is 23 / inch, and the number of loops in the well direction on the front side is 2. It was 0 times. Moreover, the uneven | corrugated | grooved part existed in the back side of the knitted fabric, and the difference of the height of a convex part and a recessed part was 0.30 mm. Furthermore, the rate of increase in the coefficient of friction when moisture is applied to the knitted fabric is 48.4%, the contact cooling sensation value when applying moisture 200 g / m ² is 211 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from the test, there was no stickiness or chilliness.

[Example 4]
Polyester round cross-section processed yarn 84 dtex / 72f with single yarn fineness 1.2 dtex, flatness 1.0, specific surface area 3281 cm ² / g on the cylinder side, single yarn fineness 2.8 dtex, flatness 3.0, ratio on the dial side A raw material having a tack mesh structure was obtained using the same knitting machine and the same knitting structure as those of Example 2 except that a polyester W-shaped cross-section processed yarn 84 dtex / 30f having a surface area of 2464 cm ² / g was supplied. The ratio of the specific surface area of the polyester round cross-section processed yarn on the front side and the polyester W-shaped cross-section processed yarn on the back side at this time was 1.33. The raw machine was processed in the same manner as in Example 1 to obtain a two-layer knitted fabric having a basis weight of 122 g / m ² and a thickness of 0.80 mm. The number of loops in the well direction on the front side of this knitted fabric is 45 / inch, the number of loops in the well direction on the back side is 24 / inch, and the number of loops in the well direction on the front side is 1. It was 9 times. Moreover, the uneven | corrugated | grooved part existed in the back side of the knitted fabric, and the difference of the height of a convex part and a recessed part was 0.31 mm. Furthermore, the rate of increase in the coefficient of friction at the time of moisture application to the knitted fabric is 56.1%, the contact cooling sensation value at the time of applying moisture 200 g / m ² is 218 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from the test, there was no stickiness or chilliness.

[Example 5]
Single yarn fineness 0.6dtex the cylinder side, flatness 1.0, a specific surface area of 4640cm ² / g of polyester round cross-section yarn 84 dtex / 144f, single yarn fineness 2.3dtex in the dial side, flatness 1.0, the ratio A raw material having a tack mesh structure was obtained using the same knitting machine and the same knitting structure as those of Example 2 except that the polyester round cross-section processed yarn 84 dtex / 36f having a surface area of 2320 cm ² / g was supplied. The ratio of the specific surface area of the polyester round cross-section processed yarn on the front side and the polyester round cross-section processed yarn on the back side at this time was 2.00. The raw machine was processed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 137 g / m ² and a thickness of 0.82 mm. The number of loops in the well direction on the front side of this knitted fabric is 46 / inch, the number of loops in the well direction on the back side is 24 / inch, and the number of loops in the well direction on the front side is 1. It was 9 times. Moreover, the uneven | corrugated | grooved part existed in the back side of this knitted fabric, and the difference of the height of a convex part and a recessed part was 0.32 mm. Furthermore, the rate of increase in the coefficient of friction when water is applied to the knitted fabric is 72.5%, the contact cooling sensation value when water is applied at 200 g / m ² is 223 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from the test, there was no stickiness or chilliness.

[Example 6]
A tack mesh structure was obtained using the same yarn, the same knitting machine, and the same knitting structure as in Example 1 except that the amount of the water-absorbing agent added at the time of dyeing was 1% owf. The raw machine was processed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 119 g / m ² and a thickness of 0.80 mm. The number of loops in the well direction on the front side of this knitted fabric is 44 / inch, the number of loops in the well direction on the back side is 10 / inch, and the number of loops in the well direction on the front side is 4. It was 4 times. Also. An uneven part was present on the back side of the knitted fabric, and the difference in height between the convex part and the concave part was 0.36 mm. Furthermore, the rate of increase in the coefficient of friction at the time of moisture application to the knitted fabric is 41.7%, the contact cooling sensation value at the time of applying moisture 200 g / m ² is 192 W / m ² · ° C., and the water absorption time is 7 seconds. In the wearing test of the obtained shirt, there was no stickiness or chilliness.

[Example 7]
Using the single circular knitting machine 28GG, single yarn mainly single yarn fineness 1.4dtex in front, flatness 3.0, a specific surface area of 3643cm ² / g of polyester W-shaped cross section yarn 84 dtex / 60f, mainly on the back side A tuck tissue production machine composed of the structure of FIG. 4 was obtained by feeding the polyester round cross-section processed yarn 84 dtex / 36f having a fineness of 2.3 dtex, a flatness of 1.0, and a specific surface area of 2320 cm ² / g. . The ratio of the specific surface area of the polyester W-shaped cross-section processed yarn mainly on the front side and the polyester round cross-section processed yarn mainly on the back side at this time was 1.57. The raw machine was processed in the same manner as in Example 1 to obtain a single knitted fabric having a basis weight of 118 g / m ² and a thickness of 0.81 mm. The number of loops in the well direction on the front side of this knitted fabric is 46 / inch, the number of loops in the well direction on the back side is 46 / inch, and the number of loops in the well direction on the front side is 1. It was 0 times. Moreover, the uneven | corrugated | grooved part existed in the back side of the knitted fabric, and the difference of the height of a convex part and a recessed part was 0.22 mm. Furthermore, the rate of increase in the coefficient of friction when moisture is applied to the knitted fabric is 85.0%, the contact cooling sensation value when applying moisture 200 g / m ² is 229 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from the test, there was no stickiness or chilliness.

[Example 8]
Using a WJL loom, the polyester W type cross-section processed yarn 84 dtex / 60f with a single yarn fineness of 1.4 dtex, flatness of 3.0, specific surface area of 3643 cm ² / g mainly on the front side, and a single yarn fineness of 2.3 dtex mainly on the back side. 5 to obtain a double woven fabric made of the woven structure of FIG. 5 so that the polyester round cross-section processed yarn 84 dtex / 36f has a flatness of 1.0 and a specific surface area of 2320 cm ² / g. At this time, the ratio of the specific surface area of the polyester W-shaped cross-section processed yarn on the front side and the polyester round cross-section processed yarn on the back side was 1.57. The raw machine was processed in the same manner as in Example 1 to obtain a woven fabric having a basis weight of 140 g / m ² and a thickness of 0.72 mm. The weft density on the front and back sides of this fabric was 107 yarns / inch, and the weft density on the front side was 1.0 times the weft density on the back side. Moreover, the uneven | corrugated | grooved part existed in the back side of the textile fabric, and the difference of the height of a convex part and a recessed part was 0.16 mm. Furthermore, the rate of increase in the coefficient of friction when applying moisture to the fabric was 87.8%, the contact cooling sensation value when applying moisture 200 g / m ² was 230 W / m ² · ° C., and the water absorption time was 1 second or less. In the shirt wearing test, there was no stickiness or chilliness.

[Comparative Example 1]
Single yarn fineness 2.3dtex the cylinder side, flatness 1.0, a specific surface area of 2320cm ² / g of polyester round cross-section yarn 84 dtex / 36f, single yarn fineness 2.8dtex in the dial side, flatness 3.0, the ratio A raw material having a tack mesh structure was obtained using the same knitting machine and the same knitting structure as those of Example 2 except that a polyester W-shaped cross-section processed yarn 84 dtex / 30f having a surface area of 2464 cm ² / g was supplied. The ratio of the specific surface area of the polyester round cross-section processed yarn on the front side and the polyester W-shaped cross-section processed yarn on the back side at this time was 0.94. The raw machine was processed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 125 g / m ² and a thickness of 0.83 mm. The number of loops in the well direction on the front side of this knitted fabric is 39 / inch, the number of loops in the well direction on the back side is 20 / inch, and the number of loops in the well direction on the front side is 2. It was 0 times. Moreover, the uneven | corrugated | grooved part existed in the back side of this knitted fabric, and the difference of the height of a convex part and a recessed part was 0.36 mm. Furthermore, the rate of increase in the coefficient of friction when moisture is applied to the knitted fabric is 162.8%, the contact cooling sensation value when applying moisture 200 g / m ² is 263 W / m ² · ° C., and the water absorption time is 1 second or less. In the wearing test of the shirt obtained from the ground, it was a sticky feeling or a feeling of coldness.

[Comparative Example 2]
Polyester W type cross-section processed yarn 84 dtex / 30f with single yarn fineness 2.8 dtex, flatness 3.0, specific surface area 2464 cm ² / g on the cylinder side, single yarn fineness 1.2 dtex, flatness 1.0, ratio on the dial side A raw material having a tack mesh structure was obtained using the same knitting machine and the same knitting structure as those of Example 2 except that a polyester round cross-section processed yarn 84 dtex / 72f having a surface area of 3281 cm ² / g was supplied. The ratio of the specific surface area of the polyester W cross-section processed yarn on the front side and the polyester round cross-section processed yarn on the back side at this time was 0.75. The raw machine was processed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 131 g / m ² and a thickness of 0.81 mm. The number of loops in the well direction on the front side of this knitted fabric is 39 / inch, the number of loops in the well direction on the back side is 20 / inch, and the number of loops in the well direction on the front side is 2. It was 0 times. Moreover, the uneven | corrugated | grooved part existed in the back side of this knitted fabric, and the difference of the height of a convex part and a recessed part was 0.31 mm. Furthermore, the rate of increase in the coefficient of friction at the time of moisture application to the knitted fabric is 209.6%, the contact cooling sensation value at the time of applying moisture 200 g / m ² is 329 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from No. 1, the feeling of stickiness and coldness was large.

[Comparative Example 3]
A raw machine was obtained with the same knitting machine and the same yarn use as in Example 1 except that the structure was as shown in FIG. The raw machine was processed in the same manner as in Example 1 to obtain a knitted fabric having a basis weight of 143 g / m ² and a thickness of 0.80 mm. The number of loops in the well direction on the front side of this knitted fabric is 44 / inch, the number of loops in the well direction on the back side is 33 / inch, and the number of loops in the well direction on the front side is 1. It was 3 times. Moreover, the uneven | corrugated | grooved part existed in the back side of this knitted fabric, and the difference of the height of a convex part and a recessed part was 0.11 mm. Furthermore, the rate of increase in the coefficient of friction when water is applied to the knitted fabric is 143.2%, the contact cooling sensation value when applying water 200 g / m ² is 259 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from No. 1, the feeling of stickiness and coldness was large.

[Comparative Example 4]
Polyester W type cross-section processed yarn 84 dtex / 30f with single yarn fineness 2.8 dtex, flatness 3.0, specific surface area 2464 cm ² / g on cylinder side, single yarn fineness 2.3 dtex, flatness 1.0, ratio on dial side A raw material having a tack mesh structure was obtained with the same knitting machine and the same structure as in Example 2 except that the polyester circular cross-section processed yarn 110 dtex / 48f having a surface area of 2341 cm ² / g was supplied. At this time, the ratio of the specific surface area of the polyester W-shaped cross-section processed yarn on the front side and the polyester round cross-section processed yarn on the back side was 1.05. A knitted fabric having a basis weight of 118 g / m ² and a thickness of 0.72 mm was obtained in the same manner as in Example 1 except that the width-setting ratio at the time of pre-setting was set to 30%. The number of loops in the well direction on the front side of this knitted fabric is 38 / inch, the number of loops in the well direction on the back side is 19 / inch, and the number of loops in the well direction on the front side is 2. It was 0 times. Moreover, the uneven | corrugated | grooved part existed in the back side of this knitted fabric, and the difference of the height of a convex part and a recessed part was 0.13 mm. Furthermore, the rate of increase in the coefficient of friction when water is applied to the knitted fabric is 130.2%, the contact cooling sensation value when applying water 200 g / m ² is 251 W / m ² · ° C., and the water absorption time is 1 second or less. In the shirt wearing test obtained from No. 1, the feeling of stickiness and coldness was large.

[Comparative Example 5]
Moisture on the skin side was instantaneously moved to the surface, and a commercially available sports shirt A, which is said to be less sticky, was obtained. The knitted fabric used in this sports shirt A has a single yarn fineness of 1.2 dtex, a flatness of 1.0, and a specific surface area of 3281 cm ² / g when the side of the shirt touching the outside air is the front side and the skin side is the back side. A single circular knitted fabric using a polyester processed yarn of 84 dtex / 72f, a polyester processed yarn of 56 dtex / 24f having a single yarn fineness of 2.3 dtex, a flatness of 1.0, and a specific surface area of 1991 cm ² / g on the back side. The ratio of the specific surface area of the processed yarn and the polyester processed yarn on the back side is 1.65, the basis weight is 114 g / m ² , the thickness is 0.65 mm, the number of loops in the well direction on the front side is 50 pieces / inch, The number of loops in the well direction was 50 / inch, and the number of loops in the well direction on the front side was 1.0 times the number of loops in the well direction on the back side. Moreover, the difference of the height of the convex part of a knitted fabric back side and a recessed part was 0.17 mm. Furthermore, the rate of increase in the coefficient of friction when applying moisture to the knitted fabric is 178.6%, the value of contact cooling when applying moisture 200 g / m ² is 263 W / m ² · ° C., and the water absorption time is 1 second or less. It was a sticky or cold feeling.

[Comparative Example 6]
A commercially available sports shirt B, which is said to have little stickiness and good skin separation, was obtained. The knitted fabric used in this sports shirt B is a single circular knitted fabric using a polyester processed yarn 84 dtex / 72f having a single yarn fineness of 1.2 dtex, a flatness of 1.0, and a specific surface area of 3281 cm ² / g on the front side and the back side. The ratio of the specific surface area of the polyester processed yarn on the front side and the polyester processed yarn on the back side is 1.00, the basis weight is 115 g / m ² , the thickness is 0.48 mm, and the number of loops in the well direction on the front side is 48 / The number of loops in the well direction on the back side was 48 / inch, and the number of loops in the well direction on the front side was 1.0 times the number of loops in the well direction on the back side. Further, the height difference between the convex portion and the concave portion on the back side of the knitted fabric was 0.12 mm, which was a level that could not be said to be uneven. Furthermore, the rate of increase in the coefficient of friction when moisture is applied to the knitted fabric is 226.7%, the contact cooling sensation value when applying moisture 200 g / m ² is 359 W / m ² · ° C., and the water absorption time is 1 second or less. It was a sticky or cold feeling.

  If clothes are used with the fabric according to the present invention, the clothes are comfortable when worn and reduce the load during sticking, feeling cold and exercising when sweating a lot due to prolonged exercise, etc. A comfortable wearing feeling can be obtained in clothes such as outerwear.

Claims (5)

An exercise characterized in that the coefficient of friction increase at the time of moisture application on at least one surface is 100% or less, and the contact cooling value at the time of 200 g / m ² moisture application is 240 W / m ² · ° C. or less. Load reducing fabric.   The fabric according to claim 1, wherein the water absorption time of the fabric is 5 seconds or less.   The fabric according to claim 1 or 2, wherein a difference in height between the convex portion and the concave portion of any one surface layer of the fabric is 0.15 to 0.50 mm.   The ratio of the specific surface area of the fibers arranged on the front side of the fabric and the specific surface area of the fibers arranged on the back side (front / back specific surface area ratio) is more than 1.00 and 4.00 or less. The fabric according to any one of the above.   The fabric according to any one of claims 1 to 4, wherein a thickness of the fabric is 0.70 to 1.2 mm.

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