JPS63227872A - Clothing material excellent in confortableness - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] Although the present invention is a clothing material mainly made of polyamide synthetic fiber, it has good moisture absorption and moisture release properties that cannot be found in conventional similar products. It also relates to fiber fabrics that have excellent heat loss properties, and are highly comfortable and can be used suitably for innerwear, innerwear, sports clothing, etc. related to clothing materials.

[Prior Art] Conventionally, as clothing materials with excellent comfort, spun yarns with a small equilibrium moisture content and filament-wound yarns with a high equilibrium moisture content have been used, for example, as described in Japanese Patent Publication No. 60-457. Attempts were made to create a sense of comfort using composite yarns made by aligning or twisting curly yarns, and
As described in Japanese Patent Application No. 612, a knitted fabric is made from a yarn that is a mixture of hydrophobic fibers with a single yarn denier of 1.0 denier or less and hydrophilic fibers such as cotton or polynosic fibers in a specific ratio to create a comfortable feeling. Attempts are being made to bring it out.

In addition, Japanese Patent Application Laid-open No. 60-215835 discloses a core yarn in which a material with a high moisture content is arranged in the core yarn, and a material with a high moisture permeability and a small moisture content in the sheath yarn, to create a comfortable feeling. Some fabrics have been proposed.

Furthermore, in Japanese Patent Application Laid-open No. 60-134036, the present inventors used a synthetic fiber with high moisture absorption performance in the inner layer of the yarn as a material for clothing with comfort, while the outer layer of the yarn was made with We have proposed a yarn or fabric that is mainly composed of synthetic fibers or synthetic fibers that have water-absorbing properties, and has a total moisture absorption rate of 5% or more at 20° C. and 65% RH.

However, most of these conventional fiber materials do not have an equilibrium moisture content (moisture absorption rate) at 20°C x 65% RH, that is, under standard conditions. At best, comfort was discussed based on technology based on the moisture absorption saturation value of the material from a dry state to a 20°C x 65% RH state.

However, according to studies conducted by the present inventors, when clothing is actually worn, it is almost never worn in an absolutely dry state, and the clothing is usually taken out from inside a wardrobe and used for wearing. and the state within the commode is generally 20
~25°C x 50~65% RH, and the wearer starts wearing the garment when it has reached saturation under these conditions, and while wearing it, depending on the type of work, type of exercise, or amount of work or exercise. Although the details of the temperature and humidity conditions inside clothing vary, in general, when doing light to medium work or light to medium exercise, the temperature and humidity inside clothes will be 30 to 36.5°C x 70 to 95% R.
It is about H.

In other words, when discussing the comfort of clothing, it is effective to discuss it based on the wearing environment conditions and changes in temperature and humidity inside the clothing in the way it is worn on a daily basis. There is no such concept in practice, and from this point of view, sufficient consideration has been given to the wearing environment conditions and changes in temperature and humidity inside the clothes, and practical problems such as the feeling of stuffiness are truly solved, and the product is rich in refreshing sensation. Tsutsumi has not yet been provided with a clothing material that can be said to have excellent comfort.

[Problem to be Solved by the Invention J] As stated in the above description, clothing absorbs and releases moisture depending on the environment in which it is worn and the temperature and humidity conditions within the clothing.

The clothing materials that have been proposed in the past with the aim of comfort, as mentioned above, mainly have equilibrium moisture content (moisture absorption rate) under conditions near standard conditions of 20°C x 65% RH. The reality is that little attention has been paid to moisture absorption speed, moisture release speed, or heat loss.

Although it is generally known that the thermal conductivity of clothing increases when it absorbs moisture, there is almost no technical idea based on this concept to bring comfort to clothing materials. The phenomenon of heat loss, in which clothing itself transfers heat from the wearer's skin and the air within the clothing, is a factor that should naturally be taken into consideration when discussing comfort.

In view of the above-mentioned points, the present inventors have focused on obtaining a true sense of comfort under conditions based on actual wearing conditions, and obtained clothing materials with excellent comfort. As a result of extensive research, we have arrived at the present invention.

That is, the purpose of the present invention is to develop polyamide-based synthetic materials mainly based on the moisture absorption and moisture release speed under actual wearing conditions as clothing, and the heat loss caused by the clothing itself transferring heat from the skin or the air inside the clothing. We aim to provide clothing materials that are made of fibers and have a good cool feel and are excellent in comfort.In particular, innerwear, innerwear, sports clothing, etc. It is often worn close to the side, and the speed of moisture absorption and release as mentioned above and heat loss greatly affect the feeling of wearing it.

[Means for Solving the Problems] The highly comfortable clothing material of the present invention, which achieves the above-mentioned objects, has the following configuration.

That is, the clothing material excellent in comfort of the present invention is a textile fabric mainly composed of polyamide synthetic fibers, and
The moisture absorption rate after 15 minutes from ℃ x 65% RH to 30 ℃ x 90% RH is 1.5% or more, and 30 ℃ x 90% RH
Moisture release rate after 15 minutes from H to 20℃ x 65%RH is 3.
It is a clothing material with excellent comfort, characterized by a content of 5% or more.

Further, the clothing material of the present invention having excellent comfort preferably has a heat loss of 200 watts/Td or more when water is equilibrated at 20°C x 65% RH, and
It has a heat loss of 300 watts/11 or more when brought into moisture equilibrium at .degree. C. x 95% R)-1.

[Function] Hereinafter, the highly comfortable clothing material of the present invention will be described in more detail based on the drawings and the like.

Figure 1 is a diagram illustrating an example of the moisture absorption and desorption properties of the highly comfortable clothing material of the present invention. After the moisture absorption ratio reaches an equilibrium state, the moisture absorption speed until the equilibrium state is reached when placed under conditions of 30° C. and 90% RH is shown, and the horizontal axis shows the elapsed time and the vertical axis shows the moisture absorption rate. The A value shown in FIG. 1 means the moisture absorption rate after 15 minutes, and is a value that is a parameter of moisture absorption characteristics in the present invention. Also, curve (2) C, conversely: 30'cx90%RI
-! From the state where the moisture absorption is in equilibrium at the bottom, 20
It shows the moisture release speed until an equilibrium state is reached when placed under the condition of ℃ × 65% RH, and B shown in the figure
The value means the rate of moisture release after 15 minutes, and is a value that is a parameter of moisture release characteristics in the present invention.

For comparison, Figure 2 is a diagram illustrating the moisture absorption and release characteristics of a conventional knitted fabric made of 100% polyamide synthetic fibers. Similar to the curve, the saturation state at 20°C x 65% RH and the saturated state at 30°C x
A hysteresis curve between saturation states under 90% RH is shown, and the A value and B value have the same meaning as the A value and B value in FIG. 1.

As mentioned above, the equilibrium moisture content (moisture absorption rate) from an extremely dry state to 20°C x 65% RH (standard state), which has been discussed in relation to comfort, is shown in Figures 1 and 2. In the diagram, it means the moisture absorption rate at 0 hours, that is, the value on the left vertical axis, and this value is certainly important as a parameter that indicates the moisture absorption characteristics of the material. However, the present inventors have conducted various studies assuming the actual wearing conditions of clothing, and have determined the values shown in Figures 1 and 2 in order to obtain comfort such as a cool feeling as a clothing material. Curve (1>, (2
>, and in particular, the A value and B value were found to be important factors.

That is, the A value, which is an index of moisture absorption speed, is 1.5% or more, and the B value, which is an index of moisture release speed, is 3.5% or more.
It has been found that if the content is 5% or more, the clothing material can provide an extremely cool feeling when actually worn and is comfortable.

In other words, if this A value is less than 1.5%, no matter how high the moisture absorption rate from an absolutely dry state to 20°C x 65% RH is, it is unlikely that the clothing material will have a small moisture absorption rate and be comfortable when actually worn. On the other hand, even if the A value is 1.5% or more but the B value is less than 3.5%, even if the sweat emanating from the wearer's body is well absorbed, it will not be released into the external environment. It has a low ability to release moisture, and it is difficult to say that it is a comfortable clothing material when actually worn.

In order to obtain higher comfort in the highly comfortable clothing material of the present invention, it is preferable that the A value is 2.0% or more and the B value is 4.5% or more. Furthermore, in the moisture absorption/desorption speed curves (1) and (2) shown in Figure 1, it is desirable that the area surrounded by the hysteresis curve be larger, especially in the conventional way of thinking. This consideration has not generally been given.

In addition, as indicators of moisture absorption and desorption characteristics of various general fiber materials, the moisture absorption rate after 15 minutes (Af direct) and the moisture rate after 15 minutes (B value) are determined depending on the production area and processing conditions, especially in the case of natural fibers. Typical data examples are shown in Table 1 below, although they vary slightly depending on the situation.

Table 1 also shows that in the clothing material of the present invention, 20°C x 65%RH
It is preferable to have a heat loss of 20 C) watt/m2 or more when the moisture is balanced at 20°C x 95% RH, and a heat loss of 300 watt/'rIt or more when the moisture is balanced at 20°C x 95% RH.

That is, FIG. 3 shows a yarn with a weight of 100 a/m on a 32 gauge knitting machine using a mixed yarn of 60 denier polyester filament yarn and 60 denier nylon filament yarn.
Using a knitted fabric that is knitted into a RD jersey, only the nylon filament yarn has been subjected to moisture absorption processing, and the heat loss has been changed in various ways.
Sewing women's dress shirts and keeping each knitted fabric at 20℃
× Heat loss value when water is equilibrated at 95% RH, and 10 panelists test the shirt in an environment of 33°C
We will show the correlation with the evaluation results of comfort by each panelist. In addition, under the conditions of the actual wearing environment mentioned above, clothing absorbs the insensible sweat from the human body in the initial stage, and the faster the moisture absorption rate, the less uncomfortable the condition becomes. Although the speed is slow, it is thought to prevent the absorbed moisture from absorbing heat from the human body and clothing, thereby preventing discomfort. Furthermore, due to the unpleasant environment mentioned above (33°C x 70% RH),
When you open the air in a comfortable air-conditioned environment, the highly comfortable clothing material of the present invention releases moisture quickly, and the moisture content of the clothing material quickly decreases, allowing the heat from your skin and the heat inside the clothing to be absorbed. This reduces the amount taken away and prevents excessive cooling. In other words, in the present invention, the internal temperature and humidity of clothing, which is necessary for clothing, is controlled in accordance with the environment and work conditions.
This makes it easier to maintain a comfortable state.

The highly comfortable clothing material of the present invention that satisfies the above-mentioned heat loss characteristics can maintain a comfortable state under a wider range of environmental and working conditions, making it more versatile and desirable. be.

In addition, 20°CX6 in various general fiber materials
Heat loss value when moisture is balanced at 5% RH and 20℃ x 9
Typical data examples of heat loss values when water is equilibrated at 5% RH are shown in Table 1.

Polyamide synthetic fibers that can be used for the highly comfortable clothing material of the present invention include nylon 6, nylon 6/6
, normal polyamide fibers such as nylon 6 and 10,
Alternatively, a third component such as a polyethylene glycol compound is introduced into these polyamide fibers by means of blending or the like, but materials other than those listed here can also be used.

In order to obtain the highly comfortable clothing material of the present invention, yarns made of polyamide fibers or fabrics such as knitted fabrics, non-woven fabrics, etc. are imparted with moisture absorbing and desorbing properties by appropriate means to satisfy the constitution of the present invention. In the step of polymerizing polyamide-based synthetic fiber polymers, vinyl carboxylic acid compounds such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, butene tricarboxylic acid, or allyl sulfone are used to create the product. A method in which acids, vinyl sulfonic acid compounds such as methallyl sulfonic acid and styrene sulfonic acid, and amide vinyl monomers such as acrylamide, methacrylamide, and N-methylol methacrylamide are used as copolymerization components, or these vinyl monomers. There is a method of spinning yarn by blending polymers consisting of. In addition, there is a method of graft polymerizing the above-mentioned various monomers after producing polyamide synthetic fibers, and the latter graft polymerization method is preferred from a commercial standpoint. In addition, as for this graft polymerization method, pretreatment is performed in advance using a polymerization initiator such as an organic peroxide such as benzoyl peroxide or an inorganic peroxide such as ammonium persulfate or potassium persulfate, and then, There is a method of carrying out graft polymerization by heat treatment using the above-mentioned aqueous solution of 7-mer, or a method of simultaneously treating a polymerization initiator and a monomer. Furthermore, methods for treating fibers with nanatsuma include submerged heating method, pad seal heating method, spray seal heating method, coating seal heating method, and the like.

Furthermore, in order to obtain polyamide-based synthetic fibers that can be favorably used in the present invention, it is effective to introduce a large amount of carboxyl groups, sulfonic acid groups, or amide groups into the fibers by graft polymerization or the like. For this purpose, it is desirable to use a fiber material with high graft polymerization efficiency. Specifically, fibers are copolymerized with polyethylene glycol compounds, polybutylene glycol compounds, or isophthalic acid (If) 5-sulfo-isophthalic acid in the case of polyesters as second and third components. is preferable because the graft polymerization efficiency is improved.

Additionally, a water-soluble compound such as silica gel, tankal, alkyl sulfonic acid, or alkylbenzene sulfonic acid is added to the fiber, and the compound is removed later by hot water treatment or alkali weight reduction treatment. There is a method to make graft polymerization easier by providing a large number of irregularities on the fiber surface, and there is also a method to make graft polymerization easier by using similar means to make the cross-sectional shape of the fiber irregular. In other words, these means! The means of increasing the surface area of the fibers facilitates modification by graft polymerization as described above, and
It is also preferable in terms of obtaining high moisture absorption and moisture release speeds.

According to various studies by the present inventors, it is desirable that the surface area of such fibers be 0.17Td/CJ or more,
Further, it is preferable to use a material having a cross-sectional irregularity of preferably 1.1 or more, more preferably 1.3 or more.

Here, the degree of cross-sectional irregularity is a value obtained by dividing the surface area value of the irregular cross-section fiber by the surface area value of a round cross-section fiber having the same denier number. In terms of cross-sectional shape, it is preferable to use fibers with irregular cross-sections as shown in (A> to (E) in FIG. In general, the degree of cross-sectional irregularity is about 1°7~2,
In addition, a π-shaped cross section like (B) is about 1.4 to 1.8, and a flat cross section like (C) is about 1.2 to 1.
5, or 1.2~ if it has a Y-shaped cross section like (D>)
It is about 1.4, and if it is a trilobal cross section like (E>), it is about 1.
．． The degree of cross-sectional irregularity is about 1 to 1°3. Note that the fiber surface area here is 3000
The cross section of the fiber enlarged twice is photographed, and the circumference of the fiber cross section of the photograph is actually measured and used to calculate the surface area value.

In addition, the amount of carboxylic acid or sulfonic acid introduced is 4.
It is preferable to set it as 6X10'' gram equivalent/gram or more, and to obtain a higher effect of the present invention, 7.0X10''4
It is most desirable to introduce more than gram/gram.

The highly comfortable clothing material of the present invention may be made of 100% modified polyamide-based synthetic fibers as described above, or may be made from any of these materials within the range that does not impair the effects of the present invention. In addition to the modified polyamide synthetic fibers, ordinary synthetic fibers or natural fibers may also be appropriately mixed. In this way, it is also desirable to use other fibers to improve comfort-related factors other than moisture absorption and desorption properties, such as feel, bulk, and wrinkle resistance. In terms of mixing ratio, it seems important to use at least about 50% by weight, preferably 70% by weight or more of the above-mentioned modified polyamide-based synthetic W&fiber.

Next, a method for measuring moisture absorption and desorption speed in the present invention will be explained.

The method of measuring moisture absorption and desorption speed in the present invention is to put about 1 g of fabric sample into a glass weighing bottle, and to hold it in an open state for 110 minutes.
Dry completely in a dryer (baking machine) set to C for 2 hours, then cool in a sealed silica gel desiccator for 30 minutes, and then accurately measure the weight.
Place the weighing bottle containing the sample in an open state in a constant temperature and humidity chamber (e.g. Temperature and Humidity Chamber Rainbow manufactured by Tabai Seisakusho) under the temperature and humidity conditions of 0°C and 65% RH, and leave it for 24 hours. After leaving the sample in a sealed silica gel dessicator for 30 minutes, the weight is accurately measured. Subsequently, after placing the bottle in a constant temperature and humidity chamber under the temperature and humidity conditions of 30° C. and 90% RH, an open weighing bottle is placed in the bottle, and the amount of moisture absorbed after 15 minutes is determined by weight measurement. As a result, 20℃×6
The moisture absorption rate value after 15 minutes from 5% RH to 30°C x 90% RH is determined from the following equation. As shown in Figure 1 (1)
To draw a line diagram like 5.10.15.30.60
The amount of moisture absorbed in minutes and 24 hours is determined from weight measurement and changes in moisture absorption rate are examined. Of course, be careful when opening and sealing weighing bottles and measuring weight.

15 from 20℃ x 65%RH to 30℃ x 90%RH
Moisture absorption after minutes After measuring the weight after 24 hours as described above, set the temperature and humidity chamber to 20℃ x 65% RH again, put the weighing bottle in an open state, and measure the amount of moisture released after 15 minutes. Check by measuring weight. As a result, from 30℃ x 90%RH to 20℃
The moisture release rate after 15 minutes for °CX65%R1-1 is determined from the following equation. Note that although the calculated value using this formula is obtained as a negative value, the absolute value of the calculated value is taken.

15 from 30℃ x 90%RH to 20℃ x 65%RH
To draw a diagram like (2) shown in Figure 1, measure the weight at 5, 10, 15, 30, and 60 minutes as well as 24 hours, and also the weight of the weighing bottle itself. Measure the amount of moisture released and the moisture release rate from the weight change, and examine the change in the moisture release rate. Of course, at this time as well, be careful when opening and sealing the weighing bottle and measuring the weight.

In addition, the method for measuring heat loss in the present invention is as follows:
101 in a constant temperature and humidity chamber or desiccator controlled to temperature and humidity conditions of ℃ x 65% RH and 20℃ x 95% RH.
A sample of 0x10 size is placed in it and left to absorb moisture for 24 hours or more. This sample was transferred to KES-F manufactured by Kadochik Co., Ltd.
7. Temperature measurement using a precision rapid thermophysical property measuring device shows room temperature humidity of 20
℃×65%RH1 The sample is placed on the hot plate at a temperature of 40'C. Immediately after placing the sample, read the heat loss (watts) from the panel meter of the measuring device every 5 seconds. Obtain the data for the 4 points with the highest reading value within the range of 10 seconds to 60 seconds after starting the reading, and then measure the 5 samples. The heat loss (watt/m2) is calculated for each case by multiplying the average value by 100.

[Example] Hereinafter, the specific structure and effects of the highly comfortable clothing material of the present invention will be explained with reference to Examples.

Example 1 and Comparative Examples] 80% by weight of polyamide synthetic fibers (single yarn fineness 3 denier, total fineness 40 denier, Y-shaped cross-section yarn) into which 8% polyethylene glycol compound was introduced, normal polyester fibers (Single yarn fineness 2 denier, total fineness 50 denier, triangular cross section yarn) 20% by weight interlaced triconte knitted fabric was 180' after normal relaxing scouring.
C heat setting was performed, and the green area was further modified by submerged graft polymerization only for polyamide synthetic fibers under the following conditions.

Methacrylic acid 15% owf Ammonium persulfate 1% owf 90°C x 60 minutes Liquid ratio 1:15 The amount of carboxyl groups introduced into the polyamide fiber subjected to such graft polymerization modification is 1.05X10-3 gram equivalent/gram. there were.

The graft polymerized knitted fabric was treated with 20% sodium carbonate.
%owf and a liquid ratio of 1:15, treatment was performed at 80° C. for 30 minutes to replace carboxyl groups with sodium.

Next, neutral bath dyeing was carried out at 98° C. for 40 minutes using a disperse dye in a conventional manner, followed by drying and finishing setting. From 20'C x 65%RH to 30°C x 90%R of this knitted fabric
The 15-minute repetition rate for H was 2.42%, and 30℃ x 90
The 15 minute repeat mix rate from %RH to 20℃ x 65%RH is 4
゜84%, and the heat loss when moisture is balanced at 20℃ x 65%RH is 259 watts/m2, 20℃ x 95%RH
The heat loss when the moisture is equilibrated is 345 Watts/TIt.
Met.

This modified knitted fabric is sewn into an inner layer and heated at 20℃ x 6 in advance.
The humidity was adjusted to 5% RH, the panelists were asked to wear this, and after resting for 1 hour in an artificial climate room with temperature and humidity conditions of 25°C x 65% RH, they were placed on a block 20 cm high for 15 minutes. The subjects were asked to perform an exercise of climbing up and down a step stool, and then remaining at rest for 20 minutes again. When we investigated the changes in temperature and humidity between the panelists' bodies and their blouses, we found that before the start of the exercise it was 32.5°C x 40%RH, but during the exercise it was 35.6°C x 92%RH. and recovered to 33.4°C x 60% RH at rest (
Example 1).

For comparison, the same knitted fabric as in Example 1 was processed under the same conditions as Example 1 without undergoing graft polymerization modification, and after being sewn into an inner layer, the same wear test was performed. Temperature and humidity before starting exercise is 33.1℃ x 45%RH
During exercise, the temperature was 36°2°C and 100% RH.

In addition, the recovery speed is slow even during the final rest period, and 3
The temperature was 4.9°C and 91% RH. In addition, 2 of this knitted fabric
The moisture absorption rate after 15 minutes from 0°C x 65% RH to 30°C x 90% RH is 1.02%, and from 30°C x 90% RH to 20°C x
Moisture release rate after 15 minutes to 65%RH is 1.58%, and 20
The heat loss when moisture is balanced at ℃ x 65% R 1 is 19
The heat loss was 265 Watts/TIi when water was balanced at 3 Watts/m2 and 20°C x 95% RH (Comparative Example 1).

The evaluation results by panelists regarding the comfort during the wearing test showed that the Example 1 product had less stuffy feeling and had a rich refreshing feeling, and was particularly good in that the speed at which it returned to the cool state after exercise was extremely fast. That's what it was. On the other hand, the evaluation result of the comparison material was that it gave a great feeling of stuffiness during exercise and was slow to recover to a cool state after exercise, making it extremely uncomfortable.

Example 2 and Comparative Example 2 72% by weight of polyamide synthetic fiber (nylon 6) staple 1.5dX54# with flat cross section, normal polyester synthetic fiber with triangular cross section (single fineness 0.7 denier, number of filaments) 42 pieces) A 40-meter-count interlaced spun yarn containing 28% by weight of filaments was produced, and a circular knit with a basis weight of 100 CI/m was knitted using this spun yarn. After the normal relaxing scouring of this knitted fabric, 1
Heat setting was performed at 8O'C, and the knitted fabric was modified by in-liquid graft polymerization using only the polyamide synthetic fiber method under the following conditions.

Acrylic acid 4% owf Methacrylic acid 12% owf Ammonium persulfate
1% owf Sodium citrate sulfite 3% ow
f Formalin condensate 70°C x 45 liquid separation ratio 1:20 The amount of carboxyl groups introduced into the polyamide synthetic fiber subjected to such graft polymerization modification is 1°16 x 10-
It was 3 gram equivalents/gram. The graft-polymerized and modified knitted fabric was treated with sodium carbonate and dyed under the same conditions as in Example 1.

From 20℃×65%RH to 30℃×90%R of such knitted fabric
The moisture absorption rate after 15 minutes at H is 2.11%, and at 30℃
The moisture release rate after 15 minutes from ×90%RH to 20°C ×65%RH was 4.05%.

In addition, the heat loss of the knitted fabric is 251 Watts/TIi when the humidity is controlled at 20°C x 65% RH (moisture equilibrium), whereas the heat loss when the humidity is controlled at 20°C x 95% RH is 251 Watts/TIi. is 340
Watt/T/l (Example 2).

Next, as a comparative example, the same knitted fabric as in Example 2 was processed without graft polymerization modification, but under the same conditions as in Example 2 (Comparative Example 2).

Next, the knitted fabrics of Example 2 and Comparative Example 2 were sewn into an inner layer, and the knitted fabrics of Example 2 and Comparative Example 2 were sewn into innerwear, and the knitted fabrics of Example 2 and Comparative Example 2 were sewn into innerwear.
When 10 25-year-old women performed the same steps up and down as in Example 1, the product of Example 2 was evaluated as a good innerwear with less stuffiness and stickiness, and an extremely refreshing feeling. However, the two comparative examples were evaluated by all panelists as being hot and uncomfortable to wear.

The moisture absorption rate of the two comparative examples after 15 minutes was 0.25%, 15
The moisture release rate after minutes is 1.58%, and the heat loss is 20℃×
Humidity controlled at 65% RH #195 watts, 20℃ x
The humidity conditioned at 95% RH was 236 Watts/TIi.

[Effects of the Invention] As described above, according to the highly comfortable clothing material of the present invention, it not only increases the coolness and comfort when worn, but also suppresses the rise in temperature and humidity inside the clothing during exercise, and reduces the temperature during rest. By increasing the speed at which the temperature and humidity inside the clothes are restored to a comfortable state, extremely good cool comfort can be provided.

According to the present invention, there is provided a clothing material that is excellent in comfort and has a good cool feeling, and is ideal for uses such as innerwear, intermediate clothing, and sports clothing, even though it is mainly made of polyamide synthetic fibers. It is something that

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating an example of the moisture absorption and release characteristics of the highly comfortable clothing material of the present invention. For comparison, FIG. 2 is a diagram illustrating the moisture absorption and release characteristics of a conventional knitted fabric made of 100% polyester-based synthetic fibers. In Figure 1.2, curve (1) indicates that the clothing material is placed under 20°C x 65% RH and the moisture absorption ratio reaches an equilibrium state; It represents the moisture absorption speed until the state is reached, the horizontal axis is the elapsed time, and the vertical axis is the moisture absorption rate. A value is 1 at that time
This is the moisture absorption rate after 5 minutes. In addition, curve (2) is, conversely, 30℃
It represents the speed of moisture release from the state where the moisture absorption is in equilibrium under ×90% RH until it reaches the equilibrium state when placed under the condition of 20°C × 65% RH, and the B value is the number of 15 minutes at that time. There is a moisture release rate. Figure 3 shows the results of sewing women's dress shirts using knitted fabrics with various heat loss characteristics.
This shows the correlation between the heat loss value when moisture is balanced at %RH and the evaluation results of comfort when the shirt is actually worn by 10 panelists in an environment of 33℃ x 70%RH. It is. FIGS. 4(A) to 4(E) show examples of various shapes of irregular cross-section fibers preferably used in the present invention.

Claims (2)

[Claims] (1) A fiber fabric mainly composed of polyamide synthetic fibers, which has a moisture absorption rate of 1.5% or more after 15 minutes from 20°C x 65% RH to 30°C x 90% RH, and
Moisture release rate after 15 minutes from %RH to 20℃ x 65%RH is 3
．． A clothing material with excellent comfort characterized by a content of 5% or more. (2) When the water is equilibrated at 20°C x 65% RH, 20
Has a heat loss of 0 watt/m^2 or more and 20℃ x 9
300 watts/m^2 when water equilibrated at 5% RH
A clothing material with excellent comfort as set forth in claim (1), characterized in that it has a heat loss of at least the above.