JP6691817B2 - Woven knit - Google Patents

Description

  Although heat stroke has been increasing rapidly in recent years, the present invention relates to a woven or knitted fabric that can be used for clothes that can be comfortably spent in an environment where heat stroke can occur.

  In Japan, the number of heat stroke patients and the number of deaths due to it are also expected to increase sharply from the mid-1990s due to global warming and continue to increase. In response to this, each ministry and agency has issued a guideline for heat stroke preventive control and is working on heat stroke countermeasures.

Many of the guidelines for heat stroke prevention management include an index called the heat index indicated by WBGT (° C) (Equation (1) when there is solar radiation such as the sun, etc., and when there is no solar radiation such as indoors or shade) (2)) is adopted. In the case of high WBGT values, in principle, exercising or working is prohibited, and if it is slightly high, it is recommended to replenish water and salt, and to take breaks in a cool place at regular intervals. As can be seen from the following equation, the WBGT value has a very high contribution of wet bulb, that is, humidity.
Formula (1) WBGT value = 0.7 x natural wet bulb temperature + 0.2 x black ball temperature + 0.1 x wet bulb temperature Formula (2) WBGT value = 0.7 x natural wet bulb temperature + 0.3 x black ball temperature

  As a measure against heat stroke, cooling of a portion where a large artery such as the neck, axilla, and crotch passes near the body surface has been studied (see, for example, Patent Documents 1 to 3 and Non-Patent Document 1). Furthermore, protective clothing that cools the crown is also under consideration (see Non-Patent Document 2, for example).

JP, 2004-76240, A JP, 2002-119530, A JP, 2006-57189, A

Utility model registration No. 3166764 Utility model registration No. 3124210

  The measures disclosed in Patent Documents 1 to 3 and Non-Patent Documents 1 to 2 have a certain effect on heat stroke, but all have been to alleviate the symptoms after becoming heat stroke. In addition, since it is necessary to attach a cooling agent to each of them, there is a problem that mobility is restricted, and it cannot be used depending on work or exercise. Further, there is a problem that it is difficult to suit clothes having high fashionability.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a woven or knitted fabric that can be used for clothes that can be comfortably spent in an environment where heat stroke can occur without using a cooling agent or the like.

  The present inventors focused their attention on that the influence of humidity on the WBGT value is large, and as a result, the heat stroke is affected not only by the amount of heat and humidity from the environment but also by the amount of heat and humidity generated in the clothes environment. It was found that Furthermore, it was found that heat stroke can be caused by sudden changes and repeated changes in the environment inside clothes. After further study based on them, it was found that a woven or knitted fabric that keeps the environment in the clothes close to normal is not a woven or knitted fabric that is equipped with a conventional method of positively cooling with a cooling agent. It has been found that it can be used for clothes that can be comfortably spent in an environment that can cause illness. Specifically, it is necessary to properly control the humidity in clothes (moisture absorption and desorption), the release of heat on the human body surface (cold sensation of touch), and the sticky feeling (reduction of lifting load) under an environment that can cause heat stroke. The present invention has been found to be applicable to clothes that can be comfortably spent, and has completed the present invention, which is a woven or knitted fabric in which moisture absorption and desorption, cool contact feeling and sticky feeling are appropriately controlled.

That is, the present invention is a woven or knitted fabric having the following points (1) to (4).
(1) A woven or knitted fabric containing a polyamide fiber containing a moisture absorbing / releasing component, which satisfies the following (i) to (iv).
(I) The woven or knitted fabric has a hygroscopicity of 0.8% or more when the equilibrium moisture content is reached at 25 ° C. and 60% RH environment and then allowed to stand for 30 minutes at 34 ° C. and 90% RH environment.
(Ii) The woven or knitted fabric has a moisture releasing property of 0.9% or more when left for 30 minutes in an environment of 25 ° C. and 60% RH in a state where the equilibrium moisture content is reached in the environment of 34 ° C. and 90% RH.
(Iii) The woven or knitted fabric has a contact cooling sensation q-max (x) of 0.10 W / cm ² or more at 20 ° C. and 60% RH, and contact cooling at 34 ° C. and 90% RH. Feeling q-max (y) value is 0.1
1 W / cm ² or more.
(Iv) The load for pulling up the woven or knitted material (dripping water content 320 ml / m ² ) is 400 cN / m ² or less.
(2) The woven or knitted fabric according to (1), wherein the mixing ratio of the polyamide fiber containing the moisture absorbing / releasing component is 20% by mass or more.
(3) The difference (q-max (y) -q-max (x)) between the contact cooling sensation values is 0.015 W / cm ² or more, according to (1) or (2). Woven and knitted fabric.
(4) The woven or knitted fabric according to any one of (1) to (3), wherein the pulling load is 200 cN / m ² or less.

  INDUSTRIAL APPLICABILITY The woven or knitted fabric of the present invention has a function of appropriately controlling humidity (moisture absorption and desorption) in clothes, release of heat on the human body surface (cold sensation of contact), and stickiness (reduction of pulling load), and high WBGT. In other words, it exhibits hygroscopicity and cool contact sensation under high temperature and high humidity environment, and also quickly releases moisture when resting in a cool place at regular intervals, that is, in a relatively low WBGT value (low temperature dry) environment. Therefore, it shows a cooling effect and a sticky feeling reducing effect due to heat of vaporization, and by keeping the environment inside clothes close to normal even with repeated environmental changes, it is possible to spend comfortably in an environment that can cause heat stroke. The woven and knitted fabric can be suitably used for clothes that can be made.

  Hereinafter, the present invention will be described in detail.

  The woven or knitted fabric of the present invention contains polyamide fibers containing a moisture absorbing / releasing component. The polyamide fiber containing a moisture absorbing / releasing component in the present invention is not particularly limited as long as it has the properties of a woven or knitted fabric described later, but a polyamide fiber that has reached an equilibrium moisture content in an environment of 25 ° C. and 60% RH is used. A polyamide fiber having a hygroscopicity of 1.5% or more when left for 30 minutes in a 34 ° C. × 90% RH environment is preferable, and a polyamide fiber having a hygroscopicity of 2.0% or more is more preferable. Further, a polyamide fiber having a moisture releasing property of 1.5% or more when left standing at 25 ° C. and 60% RH for 30 minutes, the polyamide fiber reaching the equilibrium moisture content under the environment of 34 ° C. and 90% RH is A polyamide fiber having a content of 2.0% or more is more preferable.

  The moisture absorbing / releasing component is not particularly limited, and examples thereof include a modified polyalkylene oxide obtained by reacting a polyalkylene oxide with a polyol and an aliphatic diisocyanate compound.

  As the polyalkylene oxide, polyethylene oxide, polypropylene oxide and copolymers thereof, as the polyol, glycols such as ethylene glycol, diethylene glycol and propylene glycol, and as the aliphatic diisocyanate, alicyclic diisocyanate, dicyclohexylmethane-4. , 4'-diisocyanate, 1,6-hexamethylene diisocyanate and the like.

  The shape of the polyamide fiber is not particularly limited, but a core-sheath type composite fiber containing the moisture absorbing / releasing component in the core is preferable. The core-sheath ratio (core / sheath) of the core-sheath type composite fiber is preferably 20/80 to 60/40 (mass ratio).

  The cross-sectional shape of the polyamide fiber is not particularly limited, but in addition to the circular cross-section, an elliptical cross-section, a triangular cross-section, a star-shaped cross-section, etc. may be mentioned, and if necessary, a colorant, a flame retardant, an antioxidant, etc. may be added. Agents can be included.

  The form of the polyamide fiber is not particularly limited, but may be any form such as a filament yarn, a spun yarn by staple, or a composite yarn of a filament yarn and a spun yarn, and may be subjected to higher-order processing such as heat crimping. May be given.

  Other fibers used in the woven or knitted fabric of the present invention are not particularly limited, but other mixed fibers include polyamide, polyester, acrylic, polyethylene, synthetic fibers made of polypropylene, rayon, regenerated cellulose fibers made of lyocell, acetate. Any fiber such as semi-synthetic fiber made of, for example, cotton, hemp or other natural cellulose fiber, wool, silk or other natural protein fiber can be applied, and from the viewpoint of high hygroscopicity, polyamide fiber, cellulose fiber, regenerated fiber Cellulose fibers are preferred. However, since the cellulose fiber and the regenerated cellulose fiber have high hygroscopicity but low moisture releasing property, when the cellulose fiber is mixed in the woven or knitted fabric of the present invention, from the viewpoint of improving the moisture releasing property of the woven or knitted fabric, It is preferable to contain 20% by mass or more of polyamide fiber containing a wet component.

  The cross-sectional shape of the other fiber is not particularly limited, but it has an atypical cross-sectional shape in order to transfer water due to perspiration or the like to the surface of the woven or knitted fabric and to more efficiently perform the diffusion or divergence function on the woven or knitted fabric surface. Is preferable, and an elliptical cross section, a triangular cross section, a star cross section, a multilobe shape with three or more lobes, a W shape, and a well shape are more preferable.

  The method for mixing the polyamide fiber and the other fiber may be any existing mixing method such as mixed fiber, mixed spinning, ply twist, alignment, etc., mixing with yarn, or mixed weaving, mixed knitting, mixing with woven or knitted fabric, etc. Can be applied.

  In the woven or knitted fabric of the present invention, the mixing ratio of the polyamide fiber containing the moisture absorbing / releasing component is preferably 15% by mass or more, more preferably 20% by mass or more, even more preferably 40% by mass or more, 60 A mass% or more is particularly preferable. By setting the mixing ratio to 15% by mass or more or 20% by mass or more when mixed with cellulose fibers, not only a woven or knitted fabric in which moisture absorption and desorption, contact cooling sensation and stickiness are controlled to a certain level or more, By improving the moisture-releasing property of the woven or knitted fabric, the cool feeling of repeated use becomes more excellent.

  As the form of the woven or knitted fabric of the present invention, any structure including a plain weave, a twill weave, a satin weave, or a derivative structure thereof can be applied, and similarly, as the form of the knitted product, circular knitting, flat knitting, tucking Any structure such as weft knitting such as knitting and warp knitting such as Russell and tricot can be applied.

  The woven or knitted fabric of the present invention has a hygroscopicity of 0.8% or more when left at equilibrium moisture content in an environment of 25 ° C. and 60% RH for 30 minutes in an environment of 34 ° C. and 90% RH. It is necessary, 1.0% or more is preferable, and 2.0 or more is more preferable.

Furthermore, the woven or knitted fabric of the present invention has a moisture releasing property of 0.9 when left at equilibrium moisture content in an environment of 34 ° C. and 90% RH for 30 minutes in an environment of 25 ° C. and 60% RH. % Or more, 1.1% or more is preferable, and 2.0% or more is more preferable.

  The temperature and humidity conditions of 25 ° C. and 60% RH described above are based on the assumption of a relatively low WBGT value (the WBGT value is 23 ° C. in a room without solar radiation), which is 34 ° C. The temperature and humidity conditions of 90% RH are based on the assumption of a high WBGT value (a WBGT value of 36 ° C is equivalent in a room without solar radiation) in clothes. Here, when the hygroscopicity is less than 0.8% when the equilibrium moisture content is reached in the environment of 25 ° C. and 60% RH for 30 minutes in the environment of 34 ° C. and 90% RH, Since the humidity inside the clothes increases in conjunction with the increase in the environmental humidity, it becomes difficult to maintain the environment inside the clothes in a normal state, and the feeling of stuffiness becomes remarkable. On the other hand, when the value is 0.8% or more, compared with woven and knitted fabrics made of other materials by quickly absorbing moisture from the environment and sweat of water vapor discharged from the human body, the environment in clothes (for example, warmth Humidity, etc.) will be kept close to normal. In addition, when the synthetic fiber which has reached the equilibrium moisture content in the environment of 34 ° C. and 90% RH is left under the environment of 25 ° C. and 60% RH for 30 minutes and has a moisture releasing property of less than 0.9%, Even if the environmental humidity decreases, the humidity inside the clothes does not return to normal and it takes time for the stuffy feeling to disappear. On the other hand, when the value is 0.9% or more, the moisture-absorbed polyamide fiber quickly releases moisture inside the fiber from the space inside the clothing to the space outside the clothing, as compared with a woven or knitted fabric made of another material, The environment (for example, temperature and humidity) in clothes will be kept close to normal.

  Furthermore, the suitable moisture absorption and desorption properties of the polyamide fiber show a particularly remarkable effect in repeated environmental changes. Specifically, after moving from the environment of 34 ° C, 90% RH to the environment of 25 ° C, 60% RH, the humidity in the clothes has not returned to normal, and again at 34 ° C, 90% RH. When exposed to the environment, a woven or knitted fabric made of another material feels stuffiness in a shorter time, but the woven or knitted fabric of the present invention has a normal environment in clothes as compared with a woven or knitted fabric made of another material. Woven and knitted fabrics that can be kept close to each other and can be more suitably used for clothes that can be comfortably spent in an environment where heat stroke can occur in cooperation with favorable properties such as cool contact and stickiness described later. Becomes

The value of the contact cooling sensation q-max of the present invention is an instantaneous amount of heat transfer (W) when objects are brought into contact with each other.
/ Cm ² ), and specifically, it was obtained by measurement using a KES-F7 Thermolab II tester manufactured by Kato Tech Co., Ltd. under the conditions shown in the following formulas (1) and (2). It is the numerical value.
Formula (1) q-max (x) Hot plate: 30 ℃, Sample: 20 ℃
Formula (2) q-max (y) Hot plate: 44 ℃, Sample: 34 ℃

The woven / knitted fabric of the present invention has a contact cooling q-max (x) value of 0.10 W / cm ² or more at 20 ° C. and 60% RH environment, and a contact at 34 ° C. and 90% RH environment. Cold q-max (y) value is 0.11W
/ Cm ² or more is required. The value of the contact sensation q-max (x) is preferably from 0.11 W / cm ² or more, more preferably 0.12 W / cm ² or more, 0.13 W / cm ² or more is particularly preferable. The value of the contact sensation q-max (y) is preferably from 0.13 W / cm ² or more, more preferably 0.14 W / cm ² or more, more preferably 0.15 W / cm ² or more, 0.17 W / Cm ² or more is particularly preferable.

The difference (q-max (y) -q-max (x)) between the value of the contact cooling sensation q-max (x) and the value of the contact cooling sensation q-max (y) is 0.015 W / cm ² The above is preferable, 0.020 W / cm ² or more is more preferable, 0.030 W / cm ² or more is still more preferable, and 0.040 W / cm ² or more is particularly preferable.

The contact cold sensation q-max value is a value that feels cooler when touched as the value increases, but the woven or knitted fabric of the present invention has q-max (x) of 0.10 W / cm ² or more, and q By setting -max (y) to 0.11 W / cm ² or more, it is possible to effectively remove an excessive amount of heat that may cause heat stroke from the skin or the like in contact with the woven or knitted fabric, and to prevent excessive body temperature. Since the rise can be prevented, the woven and knitted fabric can be suitably used for clothes that can be comfortably spent in an environment where heat stroke can occur. Furthermore, the difference (q-max (y) -q-max (x)) between the value of the contact cooling sensation q-max (x) and the value of the contact cooling sensation q-max (y) is 0.015 W. / Cm ² or more, it is possible to further suppress sudden changes in the environment inside the clothes, so it is possible to more suitably use the clothes that can be comfortably spent in an environment where heat stroke can occur. It will be a knit. The contact cooling q-max value is adjusted by the kind and amount of the moisture absorbing / releasing component in the polyamide fiber, the ratio of the polyamide fiber used in the woven or knitted material, the amount of the polyamide fiber exposed on the woven or knitted material surface, and the like. be able to.

Woven or knitted fabric of the present invention, the pulling load of dropwise water content 320 ml / m ² is is a 400 cN / m ² or less, preferably 200 cN / m ² or less, more preferably 150 cN / m ² or less, 100 cN / m ² or less Is more preferable, and 50 cN / m ² or less is particularly preferable.

The pulling load is measured using a KES-G5 handy compression tester manufactured by Kato Tech Co., Ltd. Specifically, 320 ml / m ² of water was dropped onto a 5 cm × 5 cm fabric, and a circular compressor (10 cm ² ) with a rubber tip was compressed at 0.02 cm / sec, and pressed against the sample. Is 4.9 cN / cm ² (5 gf), the maximum value of the pulling load applied to separate the sample from the compressor was measured, and the value was converted to cN / m ² .

  The pulling load is a numerical value representing the ease with which the skin is separated from the skin when the cloth is wet with sweat or the like. The smaller the value, the smaller the feeling of sticking to the skin when the cloth is wet, and therefore local discomfort caused by the wet cloth sticking to the skin is further suppressed. That is, it is possible to further suppress a sudden change in the environment inside the clothes. The lifting load can be adjusted by the kind and amount of the moisture absorbing / releasing component in the polyamide fiber, the ratio of the polyamide fiber used in the woven or knitted material, the amount of the polyamide fiber exposed on the surface of the woven or knitted material, and the like.

The woven or knitted fabric of the present invention, by simultaneously satisfying the aforementioned moisture absorption performance, moisture release performance, contact cold sensation q-max value and pull-up load value, high WBGT value, low WBGT value environment change or repeated environment Change, and even when the environment inside clothes changes rapidly and repeatedly, it absorbs and absorbs moisture inside clothes moderately, selects a material with a high contact cooling sensation value, and wet woven or knitted fabric clings to the skin. By keeping the environment inside the clothes close to normal by eliminating discomfort, it can be suitably used for clothes that can be comfortably spent in an environment that can cause heat stroke without using a cooling agent, It is possible to provide a woven or knitted fabric in which moisture absorption / release properties, cool contact feeling and tackiness are appropriately controlled.

  The woven or knitted fabric of the present invention can be used, for example, for general clothing, sports clothing, etc., and is preferably used for clothing used under high temperature and high humidity or during intense exercise, and more preferably for clothing that comes into contact with the skin. You can In particular, it can be preferably used as a woven or knitted fabric that can be suitably used for clothes that can be comfortably spent under an environment where heat stroke can occur. More specifically, for example, it can be preferably used for work clothes worn by indoor workers without air conditioning, uniforms for outdoor workers worn by security guards, and casual clothes such as shirts and pants.

  Next, the present invention will be specifically described with reference to examples. The present invention is not limited to the examples shown below. The evaluation methods for the woven and knitted fabrics of the present invention in Examples and Comparative Examples are as follows.

(1) Hygroscopicity After the sample was dried at a temperature of 105 ° C. for 2 hours to measure the mass W ₀ (g), the mass W _a when the equilibrium moisture content was reached under the condition of a temperature of 25 ° C. and a relative humidity of 60%. (G) is measured, and the sample is allowed to stand under a condition of a temperature of 34 ° C. and a relative humidity of 90% for 30 minutes to absorb moisture, and then the mass W _{b ′} (g) is measured to calculate the following hygroscopicity. ..
Hygroscopicity _{(%) = (W b '} - W a) / W o × 100

(2) Moisture release property The sample was dried at a temperature of 105 ° C. for 2 hours to measure the mass W ₀ (g), and then the mass W _a when the equilibrium moisture content was reached under the condition of a temperature of 34 ° C. and a relative humidity of 90%. _' (G) was measured, and the mass W _b (g) after allowing this sample to stand for 30 minutes at a temperature of 25 ° C. and a relative humidity of 60% to allow it to release moisture, calculate.
Moisture release _{(%) = (W a '} -W b) / W 0 × 100

(3) Cool contact feeling (q-max)
The amount of heat transfer (W / cm ² ) from the sample to the hot plate of the tester was measured under the following two conditions using a KES-F7 Thermolabo II tester manufactured by Kato Tech Co., Ltd.
q-max (x) Hot plate: 30 ℃, Sample: 20 ℃
q-max (y) Hot plate: 44 ℃, Sample: 34 ℃

(4) Lifting load A KES-G5 handy compression tester manufactured by Kato Tech Co., Ltd. is used and measurement is performed by the following steps (i) to (iii).
(I) A sample (5 × 5 cm) is placed in a predetermined place, and 320 ml / m ² of water is dropped.
(Ii) A circular circular tip made of rubber and having a size of 10 cm ² is compressed at 0.02 cm / sec and pulled up when the pressure on the sample reaches 4.9 cN / cm ² (5 gf / cm ² ). ..
(Iii) The maximum value of the pulling load applied to separate the sample from the compressor is measured, and the value is converted to cN / m ² . The amount of water dropped (320 ml / m ² ) in this test is a value assuming a large amount of perspiration at high temperature and high humidity.

(5) Cool sensation Wearing the T-shirts (all of the same shape and size) prepared in the present example and the comparative example, first, a resting posture was performed at 34 ° C. and 90% RH for 30 minutes, and then in the same posture, 25 ° C. and 65 % RH for 30 minutes, and then again, the coolness when each of the same posture was spent for 30 minutes in the environment of 34 ° C. and 90% RH was evaluated according to the following guidelines.
<Evaluation>
◯: The cool feeling was excellent.
Δ: Cool feeling was slightly excellent.
X: Poor coolness.

<Examples 1 to 3>
Polyethylene oxide modified product which is a reaction product of polyethylene oxide, 1,4-butanediol and dicyclohexylmethane-4,4'-diisocyanate as a moisture absorbing / releasing component (Sumitomo Seika product name "Aqua Coke", water absorption capacity 35 g / g A melt viscosity of 4,000 poise) and a polyamide 6 of 70 mass% were blended in the core portion, and the polyamide 6 in the sheath portion had a core-sheath mass ratio (core / sheath portion) of 40. The polyamide fiber (A) (78 dtex / 24f) was obtained by spinning a semi-stretched yarn of polyamide fiber of / 60 and then subjecting it to a heat crimping process by a conventional method.
Then, under the conditions shown in Table 1, the mixing ratio of the polyamide fiber (A) is 100%, or the polyamide fiber (A) and the polyethylene terephthalate fiber (85 dtex / 36f) are mixed at a predetermined ratio, and then the tack mesh structure ( A knitted fabric was created with a wale density of 42 pieces / 2.54 cm and a course density of 41 pieces / 2.54 cm (Examples 1 to 3).

<Comparative Example 1>
A knitted fabric was produced in the same manner as in Example 1 except that polyethylene terephthalate fiber (85 dtex / 36f) was used instead of the polyamide fiber (A) (78 dtex / 24f).

<Comparative example 2>
A knitted fabric was produced in the same manner as in Example 2 except that copper ammonia rayon fiber (85 dtex / 48 f) was used instead of the polyamide fiber (A) (78 dtex / 24 f).

<Example 4>
As shown in Table 2, using a cotton yarn as the warp (English cotton count 40) and a polyamide fiber (A) as the weft, fabric having a 2/1 twill weave structure (warp density / weft density = 173/89) is prepared. did.

<Comparative example 3>
A woven fabric was produced in the same manner as in Example 4 except that polyethylene terephthalate fiber (78 dtex / 24 f) was used instead of the polyamide fiber (A) (78 dtex / 24 f).

  Tables 1 and 2 show the results of evaluating the properties of the knitted fabric and the woven fabric and the properties of the obtained knitted fabric and woven fabric.

As shown in Tables 1 and 2, the woven and knitted fabrics of Examples 1 to 4 in which the hygroscopicity, the moisture releasing property, the contact cooling sensation value, and the pulling load satisfy the predetermined numerical values, the humidity in the clothes (moisture absorbing and releasing property), It is a woven / knit fabric that controls the release of heat on the surface of the human body (cooling sensation) and the feeling of stickiness (reduction of pulling load), and is suitable for clothing that can be comfortably used in an environment where heat stroke can occur. It was a woven and knitted fabric. In particular, the woven and knitted fabrics of Examples 1 and 2 containing 40% by mass or more of polyamide fibers containing a moisture absorbing and releasing component, and the woven and knitted fabrics of Example 4 containing 20% by mass or more of polyamide fibers and mixed with cellulose fibers (cotton). Is a woven / knitted fabric in which the moisture absorption / release property, the contact cooling sensation and the sticky feeling are more controlled, and the woven / knitted fabric can be more suitably used for clothes that can be comfortably spent in an environment where heat stroke can occur. .. Furthermore, the woven and knitted fabric of Example 1 which is a woven and knitted fabric containing 60% or more of polyamide fibers having a moisture absorption performance and a moisture release performance of a certain level or more is a woven and knitted fabric in which the moisture absorption and release properties, the contact cooling feeling and the sticky feeling are particularly controlled. The woven and knitted fabric is particularly suitable for clothes that can be comfortably used in an environment where heat stroke can occur. On the other hand, the knitted fabric of Comparative Example 1 is a knitted fabric composed only of polyester fibers, and is a woven or knitted fabric whose moisture absorption / desorption property and contact cooling sensation value do not satisfy predetermined values, and under an environment where heat stroke can occur. It was a woven / knitted fabric that was not suitable for use in clothes that can be comfortably spent. The knitted fabric of Comparative Example 2 contained copper ammonia rayon (regenerated cellulose fiber) having high hygroscopicity, but did not contain 20% by mass or more of polyamide fiber. Therefore, when 320 ml / m2 of water, which is assumed to be a large amount of perspiration, was dropped. The woven and knitted fabric was sticky, the pulling load exceeded 400 cN / m ² , and the coolness of repeated tests was inferior. The woven and knitted fabric was not suitable for use. The woven fabric of Comparative Example 3 contained cotton (cellulose fiber) having high hygroscopicity, but because it was a mixed weave with polyester fiber, it did not satisfy the contact cooling sensation value and the pulling load, and further, the cool sensation of repetition was poor. Therefore, the woven and knitted fabric is not suitable for use in clothes that can be comfortably spent in an environment where heat stroke can occur.

Claims (4)

A woven or knitted fabric containing a polyamide fiber containing a moisture absorbing / releasing component, which satisfies the following (1) to (4).
(1) From the state where the woven or knitted fabric reaches the equilibrium moisture content at 25 ° C. and 60% RH, 34 ° C.
, Hygroscopicity of 0.8% or more when left in a 90% RH environment for 30 minutes.
(2) From the state where the woven or knitted fabric reaches the equilibrium moisture content at 34 ° C. and 90% RH environment, 25 ° C.
Moisture release rate is 0.9% or more when left in a 60% RH environment for 30 minutes.
(3) The woven / knitted fabric has a contact cooling sensation q-max (x) of 0.10 W at 20 ° C. and 60% RH.
/ Cm ² or more and 34 ° C., 90% RH environment, the coolness of contact q-max (y) is 0.1
1 W / cm ² or more.
(4) The pulling load of the woven or knitted material (dripping water amount: 320 ml / m ² ) is 400 cN / m ² or less. The woven or knitted fabric according to claim 1, wherein a mixing ratio of the polyamide fiber containing the moisture absorbing / releasing component is 20% by mass or more. The woven or knitted fabric according to claim 1 or 2, wherein the difference (q-max (y) -q-max (x)) in the cooling sensation value is 0.015 W / cm ² or more. The woven or knitted fabric according to any one of claims 1 to 3, wherein the pulling load is 200 cN / m ² or less.