JP2008285780A - Cool-feeling fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cool-feeling fabric providing the cool feeling at exercise and perspire under fine weather by efficiently utilizing the sweat, and providing reduced moist feeling on the skin. <P>SOLUTION: The cool-feeling fabric includes a synthetic fiber containing 0.8-12.0 mass% white fine particles including white fine particles composed of stannic oxide doped with antimony oxide or white fine particles obtained by coating the stannic oxide doped with the antimony oxide with another inorganic fine particles, and water-absorbing and diffusing fiber, and has a water-absorbing rate on the back surface by a dropping method of ≤5.0 sec. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cool-sensitive fabric.

Conventionally, a fabric that exhibits cool sensation when worn as clothes is known as a cool sensation fabric. For example, qmax (heat plate and sample) using a fabric made of polyester multifilament yarn containing a certain amount or more of a sunlight shielding substance such as titanium oxide (for example, see Patent Document 1) or a fiber having excellent thermal conductivity. Known is a knitted fabric (for example, see Patent Document 2) that exhibits a feeling of cool contact by setting a peak value of a heat flow rate that moves to a sample immediately after contact with the surface to a certain value or more.
JP-A-5-222632 JP 2004-270075 A

  However, these woven and knitted fabrics have a problem that the wet feeling cannot be reduced when worn as a garment and the temperature in the garment cannot be lowered.

  [Technical Problem] The present invention is to provide a cool-sensitive fabric capable of efficiently obtaining cool sensation by using sweat during exercise sweating in fine weather and reducing the wetness of the skin surface. It is what.

  As a result of diligent research to solve the above problems, the present inventors have been able to utilize the heat of vaporization of sweat while amplifying the sweat-absorbing action if combined with a synthetic fiber that emits heat rays and a water-absorbing diffusion fiber. It has been found that the coolness can be expressed and the wetness of the skin surface can be reduced, and the present invention has been made.

  That is, in the present invention, white fine particles made of stannic oxide doped with antimony oxide, or white fine particles made of stannic oxide doped with antimony oxide coated with other inorganic fine particles are 0.8 to The gist of the present invention is a cool-sensitive fabric comprising 12.0% by mass of a synthetic fiber and a water-absorbing diffusion fiber, wherein the water absorption rate on the back surface by a dropping method is 5.0 seconds or less. . And this invention includes that a back surface is comprised using a water absorptive diffusion fiber as a preferable aspect. In addition, for the internal temperature of the fabric measured by irradiating light with an illuminance of 40000 Lux using an incandescent lamp in a constant temperature and humidity chamber adjusted to 20 ° C. × 65 RH%, water of the same mass as the fabric mass is evenly distributed over the entire back surface. The preferred embodiment also includes that the inner temperature of the fabric when it is dripped and wetted with the inner temperature of the fabric in a dry state is 7.0 ° C. lower than the latter.

  The cool-sensitive fabric of the present invention can promote the vaporization of moisture such as sweat by the heat rays emitted from the synthetic fibers containing specific white fine particles when dried. At this time, in the cool-sensitive fabric of the present invention, water-absorbing and diffusing fibers are used in combination, so that moisture can be quickly absorbed and diffused into the fabric, so that the vaporization of moisture can be further promoted. Wetness can be further reduced. As described above, the cool-sensitive fabric of the present invention can efficiently use sweat to express cool feeling and reduce the wetness of the skin surface during exercise sweating in fine weather.

  Hereinafter, the present invention will be described in detail.

  The cool-sensitive fabric of the present invention includes white fine particles composed of stannic oxide doped with antimony oxide, or white fine particles composed of tantalum oxide doped with antimony oxide coated with other inorganic fine particles (hereinafter referred to as “fine particles”). These are collectively referred to as “specific white fine particles”).

  The specific white-based fine particles have a property of selectively absorbing sunlight and radiating heat rays. Therefore, synthetic fibers containing the fine particles and yarns and fabrics containing the synthetic fibers necessarily have similar properties.

  In the white fine particles made of stannic oxide doped with antimony oxide among the specific white fine particles, the mass ratio of antimony oxide to stannic oxide is antimony oxide / stannic oxide = 0.5 / 99.5 to 15.0 / 85.0 is preferred.

  On the other hand, other inorganic fine particles that can be employed in the white fine particles formed by coating stannic oxide doped with antimony oxide on other inorganic fine particles are not particularly limited, but are titanium oxide, oxidized Examples thereof include zinc, calcium oxide, calcium carbonate, zinc carbonate, calcium sulfate, barium sulfate, and aluminum oxide. The mass ratio is preferably antimony oxide / stannic oxide / other inorganic fine particles = 0.5 / 5.0 / 94.5 to 2.0 / 18.0 / 80.0.

  The particle size (primary particle size) of the specific white fine particles is preferably 10.00 μm or less, more preferably 0.05 to 1.00 μm, and particularly preferably 0.05 to 0.50 μm. If the particle size exceeds 10.00 μm, the filter medium tends to be clogged or broken in the spinning process, which is not preferable.

  As content of the specific white type | system | group fine particle in a synthetic fiber, it is required that it is 0.8-12.0 mass%, and 1.0-10.0 mass% is preferable. If the content is less than 0.8% by mass, the fabric does not sufficiently exhibit the function of absorbing sunlight and emitting heat rays as a whole. On the other hand, if it exceeds 12.0% by mass, the spinnability is deteriorated and the strength of the fiber is lowered. In the present invention, a mixture of white fine particles made of stannic oxide doped with antimony oxide and white fine particles made of tantalum oxide doped with antimony oxide coated with other inorganic fine particles is used. The above range is preferable as the content in this case.

  In addition, the aspect in which the specific white fine particles are included in the synthetic fiber is not particularly limited, and may be any aspect in which the entire fiber is uniformly contained or only in a specific part. As an aspect contained only in a specific part, aspects, such as core-sheath shape, side-by-side shape, fruit section shape, are employable, for example. Among these, a core-sheath shape in which specific white fine particles are contained in the inner part of the fiber is preferable. This is because if the fine particles are not exposed on the fiber surface, rollers, guides and the like of spinning machines, looms, knitting machines, etc. tend not to be damaged by the fine particles.

  As a method for adding the specific white fine particles to the medium fiber to be described later, a method of spinning directly by mixing with a raw material polymer, or a master batch containing fine particles at a high concentration is prepared in advance, and this is adjusted to a predetermined concentration at the time of spinning. There are methods such as diluting, mixing and spinning.

  Here, as a fiber used for holding specific white particles (hereinafter, also referred to as “medium fiber”), a polyamide-based material such as nylon 6, nylon 66, nylon 46, nylon 610, nylon 11, nylon 12 or the like is used. Fiber, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, polyester fiber such as polylactic acid, polyolefin fiber such as polyethylene and polypropylene, or a thermoplastic polymer or composition having a good fiber-forming property based on these. Examples thereof include fibers, polyacrylonitrile fibers, polyvinyl alcohol fibers, and polyvinyl chloride fibers. Among these, polyamide fibers or polyester fibers are preferably used from the viewpoint of high elongation, color developability, and texture. Nylon 6 and nylon 66 are particularly preferable as the polyamide fibers, and polyethylene terephthalate is particularly preferable as the polyester fibers.

  In the present invention, synthetic fibers containing specific white fine particles are used as described above, and these synthetic fibers contain inorganic fine particles such as matting agents, flame retardants, and antioxidants, and organic compounds as necessary. Needless to say, it may be a thing.

  Further, the form of the synthetic fiber in the present invention may be either long or short fiber. Moreover, the form of the yarn containing such synthetic fibers is not particularly limited, and any form such as flat yarn, false twisted yarn, mixed yarn, spun yarn, twisted yarn can be adopted.

  And as content of the said synthetic fiber which occupies in a fabric, it is preferable that it is 30-80 mass% from a viewpoint of exhibiting the outstanding cool feeling.

  As described above, the cool-sensitive fabric of the present invention is a fabric containing specific synthetic fibers, and the form of the fabric may be any of a woven fabric, a knitted fabric, and a nonwoven fabric.

  Next, it will be described in detail that the cool-sensitive fabric of the present invention has a cool feeling.

  Generally, when clothes are wet by absorbing sweat or rain, they may feel cooler than when they are dry. This is because when the moisture contained in the clothes evaporates, the ambient heat is used as an energy source for evaporating, so the temperature decreases accordingly. In other words, the temperature decreases due to the endothermic effect of the heat of vaporization. In the process of drying a fabric moistened with sweating, the present inventors can remarkably enhance the endothermic effect due to heat of vaporization and cool down the temperature in clothes rapidly. Under the idea that it may be felt, when a fabric containing a synthetic fiber containing specific white fine particles and a water-absorbing diffusion fiber is used, a cool feeling can be obtained while a moist feeling on the skin surface is also obtained. It has been found that it can be alleviated, and the present invention has been made.

  That is, the synthetic fiber containing the specific white fine particles can contribute to the cool feeling. If moisture such as sweat adhering to the skin surface can be quickly transported to or near the surface of the synthetic fiber, the cool feeling can be further improved. If it can be realized and the water can be quickly evaporated, the wetness of the skin surface can be further reduced. The present invention has such a mechanism as a main technical idea, and by using such a synthetic fiber and a water-absorbing diffusion fiber in combination, it is possible to simultaneously realize the expression of cool feeling and the reduction of wet feeling. It is.

  As the water-absorbing and diffusing fiber that can be used in the present invention, any fiber that can rapidly absorb and diffuse moisture on the skin surface can be used. Examples of such fibers include fibers made of a fiber-forming polymer having excellent water absorption and diffusion performance and fibers capable of diffusing and moving moisture by capillary action. In the present invention, the latter is preferable. In particular, atypical cross-section fibers are particularly preferred. Any shape other than pure round cross-sections such as triangular, square, pentagon, flat, wedge, or C-shaped, H-shaped, I-shaped, W-shaped But it can be used. In addition, since the round cross-sectional shape which has a slit, an unevenness | corrugation, a microporous, etc. cannot be said to be a pure round cross section, it cannot be overemphasized that it is the concept contained in said atypical cross-section fiber.

  Regarding the use of the modified cross-section fiber, only one type of fiber may be used, but preferably two or more types of fibers are used in combination. For example, when yarns having different cross-section fibers and different single-fiber finenesses of each fiber (a yarn containing different-type different fineness fibers) are used, large and small gaps are formed in the yarn, and a further capillary tube is formed. The phenomenon can be promoted.

  The form of the water-absorbing diffusion fiber may be either long or short fiber. Moreover, the form of the yarn including the water-absorbing diffusion fiber is not particularly limited, and any form such as a flat yarn, false twisted yarn, mixed yarn, spun yarn, twisted yarn can be adopted.

  As described above, the water-absorbing diffusion fiber mainly contributes to the diffusion and movement of moisture in the fabric. In the present invention, it is preferable to dispose a large amount of this water-absorbing diffusion fiber on the back surface that can be the skin surface, and particularly the entire back surface. The embodiment in which is composed of water-absorbing diffusion fibers is most preferred. Specifically, it is preferable that a double knit structure or a double woven structure is adopted as the structure of the cool-sensitive fabric and the water-absorbing diffusion fibers are arranged on the back surface.

  In the present invention, the water absorption speed on the back surface by the dropping method is required to be 5.0 seconds or less, preferably 0.1 to 1.0 seconds, for the index of moisture diffusion movement. The dropping method is a method described in JIS L1907 “Textile water absorption test method” 7.1.1 dropping method. If the water absorption speed on the back surface exceeds 5.0 seconds, the moisture adhering to the skin surface cannot be absorbed sufficiently, and there may be a feeling of stickiness when worn, as well as moisture immediately on the surface of the synthetic fiber. It tends to be difficult to transport, and the coolness cannot be improved sufficiently.

  In the present invention, it is basically possible to adjust the water absorption rate on the back surface within a predetermined range by appropriately adjusting the structure of the back surface, the type of water-absorbing diffusion fiber, the amount used, and the like. In other words, depending on the combination, the water absorption speed on the back surface may not satisfy the predetermined range. In that case, the fabric may be water-absorbed.

  Water absorption processing refers to processing for increasing the diffusibility due to capillary action by hydrophilizing the fiber surface. Examples of water-absorbing processing agents that can be used for water-absorbing processing include processing agents such as polyethylene glycol, polyester resins, polyamide resins, and polyamine quaternary ammonium salts.

  The water absorption process is basically preferably performed on the back side, but may be performed on both sides or the entire fabric depending on the application.

  As a method of water absorption processing, any method can be adopted as long as it is a conventionally known method. Examples thereof include a printing method, a gravure coating method, a spray method, a padding method, and an exhaust method. In addition, a method of graft polymerization of a vinyl monomer having a hydrophilic group, particularly an acidic group, can be employed.

  Here, the evaluation method of cool feeling will be described. In the present invention, coolness is evaluated using the difference in internal temperature between the wet state and the dry state. Specifically, for the internal temperature of the fabric measured by irradiating light with an illuminance of 40000 Lux using an incandescent lamp in a constant temperature and humidity room adjusted to 20 ° C. × 65 RH%, water of the same mass as the fabric mass is used as the fabric. The internal temperature of the fabric when it is dripped uniformly over the entire surface and wetted is compared with the internal temperature of the fabric in a dry state. At this time, if the former is 7.0 ° C. or more, more preferably 7 to 14 ° C. lower than the latter, the cool feeling tends to be felt.

  To measure the internal temperature, the internal temperature measuring device shown in FIG. 1 is used. In this internal temperature measuring device, a metal mesh plate 2 having 1 cm square openings arranged at intervals of 4 mm on all sides is placed on the upper part of the black body 3, and a 130 W incandescent lamp 5 is placed at a position 20 cm above it. is set up. The black body 3 is installed to suppress heat reflection. Then, a 10 cm square black body temperature sensor 4 is installed below the metal mesh plate 2, and the temperature (internal temperature) measured by the temperature sensor is regarded as the temperature inside the clothes when worn as clothes. The black body temperature sensor 4 is installed on the black body 3 at a position 1 cm below the fabric surface.

  The internal temperature is measured in a constant temperature and humidity chamber adjusted to 20 ° C. × 65% RH. In this case, first, the internal temperature in the dry state is measured. That is, the sample 1 cut into a 20 cm square is placed on the metal mesh plate 2 in the internal temperature measuring device with the back side down. Then, the position of the incandescent lamp 5 is adjusted so that the distance between the surface of the sample 1 and the incandescent lamp 5 is 20 cm, and light is radiated from the incandescent lamp 5 so that the illuminance becomes 40000 Lux using a transformer. Measure the internal temperature after minutes.

  Next, the internal temperature of the wet state is measured. In this case, as a preparation stage, first, water having the same mass as that of the sample is dripped uniformly over the entire back surface from a position 1 cm above the back surface of the sample 1 using a dropper. Then, the wet sample 1 is placed on the metal mesh plate 2 with the back side down. Thereafter, the internal temperature is measured in the same manner as in the dry state.

  After measuring the internal temperature of the sample in both states, the internal temperature difference is obtained by calculating the difference.

As described above, the internal temperature is based on the internal temperature of the clothes. The internal temperature (T ₁ ) when measured using the cool-sensitive fabric of the present invention and the specific white Compared to the internal temperature (T ₀ ) when measured using a fabric having the same structure as that of the cool-sensitive fabric (a fabric using a medium fiber instead of a synthetic fiber containing a fine particle) except that the system fine particle is not contained Then, it is preferable that the former is preferably lowered by 1.0 to 4.0 ° C. or more with respect to the latter in order to realize excellent cool feeling. When the internal temperature difference (T ₀ -T ₁ ) is less than 1.0 ° C., it is not preferable because it tends to make it difficult to feel coolness. On the other hand, if the temperature exceeds 4.0 ° C. or higher, the effect of lowering the temperature in the clothes is excellent, but the amount of emitted heat rays increases and the temperature of the fabric surface increases remarkably. This tends to inhibit sex, which is not preferable.

  The cool-sensitive fabric of the present invention having the above-described configuration has excellent cool feeling. In the present invention, since the specific white type fine particles are used, the color tone is white, and the color development by dyeing is not limited.

  The use of the cool-sensitive fabric of the present invention is not particularly limited. For example, uniforms for outdoor sports used in athletics, baseball, soccer, arm covers, parkas, hats, blouses, shirts, It is suitable for clothing such as trousers, skirts, T-shirts, polo shirts, working wear, and training wear.

  Next, the present invention will be specifically described with reference to examples. In addition, evaluation of the fabric in an Example and a comparative example followed the following method.

1. Internal Temperature and Internal Temperature Difference Using an internal temperature measuring device as shown in FIG. 1, measurement was performed in a constant temperature and humidity room adjusted to 20 ° C. × 65% RH according to the method described above. In this internal temperature measuring device, an incandescent lamp lighting device “NL83211W (trade name)” (130 W) manufactured by Matsushita Electric Industrial Co., Ltd. was used as an incandescent lamp. And this incandescent lamp was installed in the position of 20 cm above the sample surface. The illuminance was adjusted using a transformer so as to be 40000 Lux. Furthermore, a black body temperature sensor was installed at a position 1 cm below the back of the sample.

2. Water absorption rate It measured based on JIS L1907 dropping method.

3. Coolness and wetness of the skin 10 panelists wear T-shirts made of each sample, and the time and weather conditions (hereinafter, terms related to time and weather conditions are as of April 2007 published by the Japan Meteorological Agency) (According to forecast terms and explanation terms), the season is summer (the period from June to August), the test time is around noon (about 2 hours including 1 hour before and after noon), and wind Is calm (wind speed less than 0.3m / sec), sunny weather (clouds of 2 to 8), and outdoors on a summer day (day with a maximum daily temperature of 25 ° C or higher) Using a running machine, run at a speed of 10 km / hour for 30 minutes, and then sensoryly evaluate the coolness feeling and the wetness feeling on the skin in the following three stages. Calculate the total score, coolness and skin moisture in the following 3 stages The feeling of moisture was evaluated.

(Size of coolness)
I felt cool sensation: 2 points I felt a little cool sensation: 1 point I hardly felt cool sensibility: 0 points (Evaluation criteria of cool sensibility)
○: 15 points or more Δ: 10 to 14 points ×: 9 points or less

(Size of wetness on the skin)
I did not feel a moist feeling: 2 points I felt a little moist feeling: 1 point I felt a moist feeling: 0 points (evaluation criteria for the moist feeling on the skin)
○: 15 points or more Δ: 10 to 14 points ×: 9 points or less

Example 1
Polyethylene terephthalate having a relative viscosity of 1.38 (measured at a concentration of 0.5 g / dl and a temperature of 25 ° C. using a mixture of phenol and tetrachloroethane mixed at a mass ratio of 1/1 as a solvent) was used as a sheath component in the fiber. . On the other hand, 91.0% by mass of polyethylene terephthalate as a core component and stannic oxide doped with antimony oxide are coated on titanium oxide (mass ratio: antimony oxide / stannic oxide / titanium oxide = 1.5 / 13). 0.5 / 85.0) was used, and a uniform melt-kneaded product was melt-mixed with 9.0% by mass of white fine particles having a primary particle size of 0.20 μm and sufficiently kneaded. Then, the core / sheath mass ratio was set to 20/80, and melt spinning was performed at a spinning temperature of 290 ° C. and a speed of 3200 m / min to obtain a 90 dtex 24f highly oriented unstretched multifilament yarn.

  Subsequently, using a friction type false twisting machine, false twisting was performed on the highly oriented unstretched multifilament yarn at a heater temperature of 175 ° C. and a draw ratio of 1.62 to obtain a 56 dtex 24f core-sheath fiber-containing false twisted yarn. . A 73 dtex 44f yarn (hereinafter referred to as “atypical different fineness fiber-containing false twisted yarn) obtained by false twisting the false twisted yarn and a yarn“ Lumiace (trade name) ”manufactured by Unitika Fiber Co., Ltd. ), And using a LPJ-H type double-sided circular knitting machine (needle density: 28 / 2.54 cm) manufactured by Fukuhara Seiki Co., Ltd. A knitted fabric having a two-layer structure was prepared in which a false twisted yarn containing atypical and different fineness fibers was arranged.

  Next, the obtained knitted fabric was scoured and relaxed at 80 ° C. for 20 minutes using a liquid dyeing machine using a treatment liquid containing 1 g / L of nonionic activator and 5 g / L of soda ash. And after making it dry at 150 degreeC with a shrink surfer type | mold dryer, it preset at 170 degreeC for 1 minute. Furthermore, the dyeing | staining which served as the water absorption process for 30 minutes at 130 degreeC was performed with the following prescription 1 using the said dyeing machine. Then, it dried at 150 degreeC with the said dryer, and finished and set at 170 degreeC for 1 minute, and obtained the cool fabric of this invention.

(Prescription 1)
Disperse dye 0.05% omf (Dianix Blue AC-E: manufactured by Dystar Japan Co., Ltd.)
Dispersing leveling agent 0.5g / L (Nikka Sun Salt SN-130: manufactured by Nikka Chemical Co., Ltd.)
Acetic acid (concentration 48% by mass) 0.2cc / L
Water absorption processing agent 2.0% omf (SR-1000: manufactured by Takamatsu Yushi Co., Ltd.)

(Example 2)
A cool-sensitive fabric of the present invention was obtained in the same manner as in Example 1 except that the mass ratio of the core / sheath was set to 10/90 instead of 20/80.

(Example 3)
A cool-sensitive fabric of the present invention was obtained in the same manner as in Example 1, except that the false twisted fiber-containing false twisted yarn was placed on the surface of the fabric, and the core-sheath fiber-containing false twisted yarn was placed on the back surface.

Example 4
Use white fine particles of stannic oxide having a primary particle size of 0.08 μm doped with antimony oxide as the white fine particles, and the mixing ratio of polyethylene terephthalate in the core component to the white fine particles is not 91: 9 but 80: A cool-sensitive fabric of the present invention was obtained in the same manner as in Example 1, except that the ratio was 20 and the mass ratio of the core / sheath was set to 40/60 instead of 20/80.

(Example 5)
A cool-sensitive fabric of the present invention was obtained in the same manner as in Example 4 except that the mass ratio of the core / sheath was set to 55/45 instead of 40/60.

(Comparative Example 1)
A comparative fabric was obtained in the same manner as in Example 1 except that the mixing ratio of the polyethylene terephthalate and the white fine particles in the core component was 97.5: 2.5 instead of 91: 9.

(Comparative Example 2)
A comparative example is used in the same manner as in Example 1 except that a highly oriented unstretched multifilament yarn (polyethylene terephthalate) made of polyethylene terephthalate is used instead of the highly oriented unstretched multifilament yarn containing white fine particles. A fabric was obtained.

(Comparative Example 3)
A comparative fabric was obtained in the same manner as in Example 1 except that the water-absorbing agent was omitted from formulation 1.

(Comparative Example 4)
In Example 4, an attempt was made to produce a highly oriented unstretched multifilament yarn by setting the mass ratio of the core / sheath to 75/25 instead of 40/60, but the fluidity of the melt-kneaded product was lowered, and spinning could not be performed. It was.

  The results of evaluating the properties of the fabrics obtained in the above examples and comparative examples are shown in Table 1 below.

  As is apparent from Table 1, in Examples 1 to 5, the internal temperature difference between the wet state and the dry state was 7.0 ° C. or more, and the water absorption rate was 5.0 seconds or less. For this reason, the cool feeling and the wet feeling reduction effect on the skin surface could be realized.

  Moreover, in Example 3, since the water-absorbing diffusion fiber was not used on the skin surface side (back surface), the effect of reducing the wet feeling of the skin surface and the wet feeling of the skin surface was hardly obtained.

  Furthermore, in Example 5, since there were too many heat rays emitted from the fabric, the cool feeling was somewhat inhibited.

  On the other hand, in the comparative example 1, since the content of the specific white fine particles in the fiber was too small, the fabric could not sufficiently exhibit the function of absorbing sunlight and emitting heat rays as a whole. Therefore, I could not feel coolness.

  Further, in Comparative Example 2, the specific white-based fine particles were not contained in the fiber, so that the cool feeling could not be realized.

  In Comparative Example 3, the knitted fabric according to Example 1 was originally not capable of satisfying the predetermined water absorption speed, and thus water absorption processing was performed, whereas in this example, the water absorption processing was omitted. As a result, the water absorption speed exceeded 5.0 seconds. Therefore, not only the wet feeling but also the cool feeling could not be realized.

  In Comparative Example 4, assuming that the fiber could be spun, the content of the specific white fine particles in the fiber was calculated based on the ratio of the fine particles contained in the core component, the mass ratio of the core / sheath, etc. %. Therefore, in this example, the fiber could not be spun because too much fine particles were used.

It is a schematic side view which shows an example of an internal temperature measuring apparatus.

Explanation of symbols

1 Sample 2 Metal mesh plate 3 Black body 4 Black body temperature sensor 5 Incandescent lamp

Claims (3)

  Contains 0.8 to 12.0% by mass of white fine particles made of stannic oxide doped with antimony oxide or white fine particles made of tantalum oxide doped with antimony oxide coated with other inorganic fine particles And a water-absorbing diffusion fiber, and the water absorption speed of the back surface by the dropping method is 5.0 seconds or less.   The cool-sensitive fabric according to claim 1, wherein the back surface is constituted by using a water-absorbing diffusion fiber. Water of the same mass as the fabric mass is uniformly dropped on the entire back surface for the internal temperature of the fabric measured by irradiating light with an illuminance of 40000 Lux using an incandescent lamp in a constant temperature and humidity chamber adjusted to 20 ° C x 65RH%. 3. The cool sensation according to claim 1 or 2, wherein the inner temperature of the fabric when wetted and the inner temperature of the fabric in a dry state are compared, and the former is 7.0 ° C. or more lower than the latter. Fabric.