JP2020059952A - Heat-insulating fiber cloth and garment including the same - Google Patents

Abstract

To provide a heat-insulating fiber cloth or the like that can suppress a temperature rise in a garment by blocking heat rays from sunlight or the like, and can suppress a deterioration of heat insulating properties even in washing or the like, and can reduce a feeling of heat felt by a person who wears a garment made from the heat-insulating fiber cloth.SOLUTION: A heat-insulating fiber cloth has a synthetic resin film on at least one side of a fiber cloth, the synthetic resin film including metal particles and/or carbon black, the heat-insulating fiber cloth having a permeability of 1.0 cm/cms or less measured in accordance with JIS L1096 Frazier method.SELECTED DRAWING: None

Description

  TECHNICAL FIELD The present invention relates to a heat-shielding fiber cloth which is a heat-shielding fiber cloth and a garment using the same.

  In recent years, the number of midsummer days when the maximum temperature exceeds 30 ° C has increased. In addition, there are many hot days with a maximum temperature of 35 ° C, and areas with temperatures above 40 ° C are occurring all over Japan. Even in such an unprecedented hot environment, work is performed at factories and construction sites. In such a situation, in order to reduce the load on the worker's heat as much as possible, an electric fan (hereinafter referred to as a fan) is attached to the work clothes to keep outside air between the body and clothes. Clothes that are said to be air-conditioned clothes, in which the hot air in the clothes and the vapor of perspiration are discharged to the outside of the clothes by sending them into the clothes, have come to be seen.

  Although clothes having a blowing means such as a fan are effective in reducing the temperature and humidity inside the clothes, when working outdoors, the temperature inside the clothes easily rises, A garment that can further reduce the temperature inside the garment is desired.

  In addition, in recent heat, in addition to applications such as work clothes, the load on the heat can be reduced even when going outside at a salesman, going out for leisure, daily shopping and walking, and playing with children. Clothes that can be used are desired.

  Therefore, conventionally, a heat-shielding fiber cloth (hereinafter referred to as a heat-shielding fiber cloth) has been used for clothes. Regarding the heat-shielding fiber cloth, various methods have been proposed to impart heat-shielding properties. As a method of imparting heat-shielding properties, for example, by calendering the fiber cloth, or by using a dense high-density cloth such as using a flat yarn as a thread constituting the fiber cloth, A method is known in which sunlight is blocked to prevent an increase in temperature (Patent Document 1). Also, a method of forming a vapor-deposited layer of aluminum, titanium, etc. on the surface of the fiber cloth to suppress the rise in the temperature inside the vehicle by reflecting the heat rays from the sunlight, and conversely, reflecting the heat rays from the body There is also known a method of keeping the temperature in clothes (Patent Document 2 and Patent Document 3).

JP, 2012-12726, A JP, 2006-205366, A JP, 2013-10337, A

  However, by performing calendaring, the fiber cloth that shields sunlight cannot obtain a sufficient heat shield effect and cannot sufficiently suppress the temperature rise in the clothes.

  In addition, a fiber cloth with a metal layer such as aluminum or titanium formed on the fiber surface by vapor deposition or sputtering is vulnerable to abrasion, so the metal layer will fall off when it is worn on clothing or repeatedly subjected to washing treatment. The heat shield property is reduced.

  Therefore, the present invention has been made in view of the above circumstances, it is possible to suppress the temperature rise in the clothes by blocking the heat rays from the sun, and further, to reduce the heat shield property when washing or the like. It is an object of the present invention to provide a heat-shielding fiber cloth or the like that can be suppressed and that can reduce the feeling of the wearer of a garment being hot when used in a garment.

The present inventors have completed the present invention as a result of earnest studies for solving the above problems. That is, the heat-shielding fiber cloth according to the present invention has the following configuration.
(1) The heat-shielding fiber cloth according to the present invention is a heat-shielding fiber cloth having a synthetic resin film formed on at least one surface of the fiber cloth, and the synthetic resin film contains metal particles and / or carbon black. The heat-shielding fiber fabric has an air permeability of 1.0 cm ³ / cm ² · s or less measured according to JIS L1096 Frazier type method.
(2) Further, in the heat-shielding fiber cloth according to the present invention, the metal particles may be aluminum particles.
(3) In addition, in the heat-shielding fiber cloth according to the present invention, the metal particles are preferably scale-shaped.
(4) Further, the heat-shielding fiber cloth according to the present invention preferably has a basis weight of 170 g / m ² or less.
(5) Further, the heat-shielding fiber cloth according to the present invention preferably has a thickness of 0.5 mm or less.
(6) In the heat-shielding fiber cloth according to the present invention, the synthetic resin film may be a polyurethane resin film formed by wet coagulation.
(7) In the heat-shielding fiber cloth according to the present invention, the synthetic resin film may have a thickness of 30 μm or less.
(8) Further, in the heat-shielding fiber cloth according to the present invention, the amount of the synthetic resin forming the synthetic resin film attached is preferably 1 g / m ² or more and 30 g / m ² or less.
(9) Further, the heat-shielding fiber cloth according to the present invention is preferably a heat-shielding fiber cloth used for at least a part of clothes having an air blowing unit.
(10) Further, the garment according to the present invention uses the heat-shielding fiber cloth described in any one of the above, and has a blowing unit.

  The heat-shielding fiber cloth or the like according to the present invention can suppress an increase in temperature inside clothes by blocking heat rays from sunlight and the like, and further suppress a decrease in heat-shielding property when washing or the like is performed. When used for clothes, it is possible to reduce the feeling of heat to the wearer of the clothes.

  The heat-shielding fiber cloth according to the present invention and clothes using the same will be described below. The following embodiments are merely examples for explaining the present invention, and it is not intended that the present invention be the only embodiments. The present invention can be implemented in various modes without departing from the spirit thereof.

[Heat-shielding fiber cloth]
The heat-shielding fiber cloth according to the present embodiment is a heat-shielding fiber cloth having a synthetic resin film formed on at least one surface of the fiber cloth. The synthetic resin film contains metal particles and / or carbon black. Further, the heat-shielding fiber cloth according to the present embodiment has an air permeability of 1.0 cm ³ / cm ² · s or less measured according to JIS L1096 Frazier type method.

(Fiber cloth)
The fiber cloth that can be used for the heat-shielding fiber cloth in the present embodiment is polyester, nylon, acrylic, synthetic fiber such as polyurethane, semi-synthetic fiber such as diacetate, regenerated fiber such as rayon, cotton, wool, silk, It may be a fiber cloth using natural fibers such as hemp alone, or a fiber cloth in which two or more kinds of these fibers are mixed, mixed-spun, mixed woven or knitted, and any form such as woven fabric, knitted fabric, non-woven fabric, etc. It may be a fiber cloth.

  Furthermore, the fiber cloth in the present embodiment may be colored by dyeing, printing, or the like. The heat-shielding fiber cloth in the present embodiment has excellent heat-shielding properties even if it is colored from white to a light color or a dark color. Further, the fiber cloth may have functionality such as water repellency, deodorant property, antibacterial deodorant property, antibacterial property, water absorbency, hygroscopic property, flame retardancy, and antistatic property.

  Further, within a range not departing from the gist of the present invention, the fiber cloth is a fiber in which a resin film such as a polyurethane resin film, a polytetrafluoroethylene resin film, an acrylic resin film, a polyethylene resin film, or a polyester resin film is laminated. It may be cloth.

(Synthetic resin film)
The synthetic resin forming the synthetic resin film formed on the heat-shielding fiber cloth in the present embodiment includes polyurethane resin, polyester resin, polyamide resin, acrylic resin, silicone resin, polyfluororesin, polyethylene resin, styrene-butadiene resin, Nitrile butadiene resin, epoxy resin and the like can be used. These synthetic resins may be used alone or in combination of two or more. Further, these synthetic resins can be obtained in the form of a solution dissolved in a solvent, an emulsion emulsified and dispersed in water, or a chip-shaped solid body.

  The synthetic resin is preferably a polyurethane resin that can be wet-solidified to form a film. The urethane resin film formed by wet coagulation follows the irregularities on the surface of the fiber cloth and changes in thickness, especially when formed into a thin film. Furthermore, the thick part of the urethane resin film is a microporous film and the thin part is a non-porous film. Therefore, when the synthetic resin film is composed of a polyurethane resin which is wet-coagulated and formed into a film, it is easy to obtain a light and soft heat-shielding fiber cloth, and when the heat-shielding fiber cloth is wet with sweat, Also, a heat-shielding fiber cloth having excellent abrasion resistance can be obtained even in a state where it is wet with washing treatment water and the like.

  As the above-mentioned polyurethane resin, ether type, ester type, ester / ether type, carbonate type and the like can be used, but it is not particularly limited. As the polyurethane resin, one-component type, two-component type and the like can be used, but the polyurethane resin is not particularly limited. In the case of wet coagulation to form a film, the polyurethane resin is preferably an ester type or ether / ester type from the viewpoint of film forming properties. Particularly from the viewpoint of abrasion resistance when wet, the polyurethane resin is more preferably an ester type.

  In addition, the form of the synthetic resin film may be either a nonporous film or a microporous film.

  Further, the shape of the synthetic resin film may be formed on at least one side of the fiber cloth. The shape of the synthetic resin film may be, for example, a non-porous film having a uniform thickness, a porous film having a uniform thickness, a film having a through hole in the thickness direction, or a penetrating in the thickness direction without departing from the gist of the present invention. A film that does not have holes, a film that does not have a resin film partially such as a fiber cloth or a portion corresponding to the convex portion of the fiber that constitutes the fiber cloth, a film that has a different thickness depending on the location, a lattice-shaped film, or a dot-shaped film. It may be present and is not particularly limited.

  Further, the synthetic resin film may have a surface treatment layer of synthetic resin on the surface without departing from the spirit of the present invention. Since the synthetic resin film has the surface treatment layer, it is possible to improve the wear resistance of the heat-shielding fiber cloth, improve the touch of the synthetic resin film surface, and the like. As the synthetic resin used for the surface treatment layer, any resin can be used according to the purpose. The surface treatment layer may be a layer that covers the entire surface of the synthetic resin film, or may be a layer formed in the synthetic resin film in a dot shape, a linear shape, or the like. The thickness of the surface-treated layer is not particularly limited as long as it does not depart from the gist of the present invention, but is preferably less than 5 μm from the viewpoint of the basis weight and texture of the resulting heat-shielding fiber cloth.

  The thickness of the synthetic resin film in the present embodiment is preferably 30 μm or less from the viewpoint of texture and wearing feeling in hot seasons. The thickness of the synthetic resin film is more preferably 20 μm or less, further preferably 15 μm or less, even more preferably 10 μm or less, and most preferably 8 μm or less.

The lower limit of the thickness of the synthetic resin film is not particularly limited, the air permeability of the heat-shielding fiber fabric is maintained to be 1.0 cm ³ / cm ² · s or less by the JIS L1096 Frazier method, and the fiber fabric is also maintained. The thickness may be such that the metal particles and / or carbon black can be fixed on the surface of and the durability against abrasion in washing can be maintained. The lower limit of the thickness of the synthetic resin film is about 0.5 μm, depending on the amount of the metal particles blended.

  The thickness of the synthetic resin film is the thickness from the fibers of the outermost layer (the surface side on which the synthetic resin film is formed) forming the fiber cloth to the surface of the synthetic resin film, and the inside of the fiber cloth is impregnated. The synthetic resin is not included in the thickness of the synthetic resin film. The thickness of the synthetic resin film does not include the locations where additives such as metal particles, carbon black, and other particles in the synthetic resin protrude from the synthetic resin film.

Further, it is preferable that the adhesion amount of the synthetic resin forming the synthetic resin film is 1 g / m ² or more and 30 g / m ² or less. The upper limit of the adhesion amount is more preferably 20 g / m ² or less, even more preferably 15 g / m ² or less, and most preferably 10 g / m ² or less. The lower limit of the adhesion amount is more preferably ² g / m ² or more, and further preferably 4 g / m ² or more. The attached amount of the synthetic resin forming the synthetic resin film is a dry weight per unit area in the synthetic resin film formed on the fiber cloth. When the amount of the synthetic resin forming the synthetic resin film is 30 g / m ² or less, the basis weight of the resulting heat-shielding fiber cloth is reduced, and when used for clothes having a blowing means such as a fan, the clothes are blown by a blower. By injecting air into the clothes, the clothes are sufficiently inflated, and it becomes easier to provide a heat shield and cooling effect to the wearer. Furthermore, the touch and texture peculiar to the synthetic resin film are unlikely to occur, and the wearer is less likely to feel uncomfortable as a clothing material for summer. By setting the amount of the synthetic resin forming the synthetic resin film to be 1 g / m ² or more, sufficient heat shielding property can be obtained, durability of heat shielding property can be improved, and air permeability can be improved. It is easy to keep below the specified value.

(Metal particles, carbon black)
The synthetic resin film in the present embodiment contains metal particles and / or carbon black. The metal particles and / or carbon black preferably have the ability to reflect or absorb heat rays. Since the metal particles and / or carbon black contained in the synthetic resin film reflects or absorbs the heat rays of sunlight, the heat shielding property of the heat-shielding fiber cloth is improved by the metal particles and / or carbon black contained in the synthetic resin film. improves. Therefore, when the heat-shielding fiber cloth according to the present embodiment is used for clothes, an increase in temperature inside the clothes can be sufficiently suppressed. In addition, since the metal particles and / or carbon black are embedded in the synthetic resin film, the metal particles and / or carbon black are less likely to drop from the heat-shielding fiber cloth against abrasion such as washing, and thus washing is performed. In this case, it is possible to suppress a decrease in heat shield property. Therefore, when the heat-shielding fiber cloth according to the present embodiment is used for summer clothes that easily sweat, the heat-shielding property does not easily deteriorate even if the washing process is repeated.

  Specific examples of the metal particles include particles of aluminum, titanium, silver, gold, platinum, copper and the like, and at least one of them may be included. Further, as the metal particles, a porous material such as zeolite on which the metal particles are supported can be used. In particular, aluminum particles are preferable as the metal particles because of their high heat ray reflectivity and the fact that even a lightly colored fiber cloth has little effect on the color. Further, when silver is used as the metal particles, it is possible to impart antibacterial property to the heat-shielding fiber cloth.

  When using a darkly colored fiber cloth, aluminum particles and / or carbon black may be included in the synthetic resin film. In particular, when carbon black is contained in the synthetic resin film, since the carbon black absorbs infrared rays, the temperature of the heat-shielding fiber cloth rises, which is not preferable as a fiber cloth for suppressing heat. When the heat-shielding fiber cloth is used for clothes having a blowing means such as a fan, the clothes swell with air and the heat-shielding fiber cloth does not come into contact with the skin of the wearer. Therefore, even if the temperature of the heat-shielding fiber cloth is increased by the carbon black, the wearer hardly feels the temperature increase of the heat-shielding fiber cloth, and the carbon black absorbs heat rays from the sunlight and reaches the human body. By reducing the amount of infrared rays, the effect of mitigating the heat is exerted. Therefore, it is possible to reduce the feeling that the wearer of the clothes using the heat-shielding fiber cloth feels hot.

  The shape of the metal particles is not particularly limited, and may be, for example, spherical, acicular, or scaly, and preferably scaly. When the shape of the metal particles is scaly, it is difficult for the metal particles to be impregnated between the yarn and the fibers that form the fiber cloth, and the metal particles are likely to stay on the surface of the fiber cloth, so that the heat shield property can be more efficiently exhibited. it can.

  In addition, like the heat-shielding fiber cloth in the present embodiment, even if the heat-shielding fiber cloth having a small amount of synthetic resin forming the synthetic resin film and a thin synthetic resin film is used, scale-like metal particles When using, the surface of the scale-like metal particles are arranged substantially parallel to the surface of the fiber cloth, so that it is possible to use metal particles having a larger particle diameter in the surface direction than the thickness of the synthetic resin film. Therefore, the heat-shielding fiber cloth has excellent heat ray reflection performance. Therefore, the heat-shielding property of the heat-shielding fiber cloth is further improved. Furthermore, since a wide one side of the scale-like particles remaining on the fiber surface is bonded with a synthetic resin along the fiber cloth surface or the surface of the fiber, the whole metal particles are taken into the synthetic resin film, The number of metal particles protruding from the synthetic resin film is reduced, and the metal particles are less likely to fall off from the heat-shielding fiber cloth due to abrasion such as washing. Therefore, the heat-shielding fiber cloth has further excellent washing durability. Becomes

  The particle size of the metal particles is preferably 0.01 μm or more and 30 μm or less. When the particle size is 0.01 μm or more and 30 μm or less, handling such as weighing and dispersion in a resin solution is facilitated, and metal particles are less likely to fall off due to abrasion during washing treatment or wearing. The particle diameter is an average value of values obtained by observing with an electron microscope and measuring the major axis of arbitrary plural particles (for example, 5 particles).

  The lower limit of the content of the metal particles is preferably 5 parts by mass or more, more preferably 10 parts by mass or more, and even more preferably 20 parts by mass or more with respect to 100 parts by mass of the synthetic resin solid content forming the synthetic resin film. is there. The upper limit of the content of the metal particles is preferably 100 parts by mass or less based on 100 parts by mass of the synthetic resin solid content forming the synthetic resin film, and 80 parts by mass or less, more preferably 50 parts by mass from the viewpoint of durability against abrasion and the like. It is below the mass part.

  Further, the synthetic resin film may contain a pigment, a cross-linking agent, an ultraviolet absorber, an antioxidant, a deodorant, an antibacterial agent, a flameproofing agent and the like. Further, it has spherical organic fine particles for improving the touch when the resin film surface of the heat-shielding fiber cloth touches the skin, such as when the blower such as a fan is stopped, and a corner for imparting a feeling of roughness. Inorganic fine particles and the like may be contained in the synthetic resin film.

(Breathability)
The heat-shielding fiber cloth in the present embodiment has an air permeability of 1.0 cm ³ / cm ² · s or less measured according to JIS L1096 Frazier type method. The air permeability of the heat-shielding fiber fabric is preferably 0.6 cm ³ / cm ² · s or less, more preferably 0.3 cm ³ / cm ² · s or less, and even more preferably 0.1 cm ³ / cm ² · s or less. Is.

Since the air permeability is 1.0 cm ³ / cm ² · s or less, when the heat-shielding fiber cloth according to the present embodiment is used for clothes having an air blowing unit, air is blown into the clothes from the air blowing unit. At that time, the garment swells to form a space between the heat-shielding fiber cloth constituting the garment and the body. This prevents the heat-shielding fiber cloth from adhering to the skin, and even when the surface temperature of the fiber cloth rises due to the heat rays from the sunlight, the effect can be prevented, so that the heat felt by the wearer can be reduced. It can be reduced more.

When the air permeability exceeds 1.0 cm ³ / cm ² · s, when the heat-shielding fiber fabric according to the present embodiment is used for clothes having a blowing means, when air is blown into the clothes from the blowing means. In addition, air easily flows out from the surface of the heat-shielding fiber cloth. Therefore, the clothes do not swell sufficiently, air does not sufficiently flow between the clothes and the body, or the body and the heat-shielding fiber cloth come into contact with each other at many places, so that the effect of reducing heat on the wearer is reduced. May be reduced. The lower limit of the air permeability of the heat-shielding fiber cloth is not particularly limited, and may be 0.01 cm ³ / cm ² · s or less, or may have no air permeability.

(Unit weight and thickness of heat-shielding fiber cloth)
The heat-shielding fiber cloth in the present embodiment preferably has a basis weight of 170 g / m ² or less. The basis weight of the heat-shielding fiber fabric is more preferably 150 g / m ² or less, still more preferably 120 g / m ² or less, and even more preferably 100 g / m ² or less. The basis weight of the heat-shielding fiber cloth is the weight of the heat-shielding fiber cloth per unit area.

When the basis weight of the heat-shielding fiber cloth is 170 g / m ² or less, a light garment can be obtained, which can give a wearer a refreshing feeling in a hot environment, and when used for clothes having a blower, a fan ( When air is introduced into the clothes from a blower or the like, the clothes tend to swell, the effect of reducing the heat is easily obtained, and it becomes difficult to give the wearer a feeling of weight and close contact. Furthermore, since the weight of the clothes becomes lighter, even if a light fan with a weak force (blower) is used as a means for blowing air into the clothes, the air introduced into the clothes from the fan (blower) can be used. You can inflate your clothes. Therefore, it is possible to take measures such as reducing the weight of the clothes, the weight of the clothes being lightened, and increasing the usable time by attaching a long-life battery to the clothes. Can be provided.

The heat-shielding fiber cloth preferably has a basis weight of 25 g / m ² or more. The basis weight of the heat-shielding fiber cloth is more preferably 35 g / m ² or more, still more preferably 45 g / m ² or more.

By setting the basis weight of the heat-shielding fiber fabric to be 25 g / m ² or more, the strength required for work clothes can be obtained, and the fabric near the joint with the blower is less likely to be torn. Further, the air permeability of the heat-shielding fiber cloth is unlikely to increase, and when the air is introduced into the clothes from a fan (blower) or the like, the clothes are likely to swell and a heat reducing effect is easily obtained. Even with a heat-shielding fiber cloth that satisfies the air permeability condition, the texture as summer clothes, the appearance on the fiber cloth side, and the touch are likely to be good.

  The heat-shielding fiber cloth according to the present embodiment preferably has a thickness of 0.5 mm or less. The thickness of the heat-shielding fiber cloth is more preferably 0.3 mm or less, still more preferably 0.2 mm or less. It is considered that the thicker the heat-shielding fiber cloth is, the thicker the air layer becomes, which is preferable from the viewpoint of heat-shielding property. However, in the present embodiment, the heat-shielding fiber cloth has a thickness of 0.5 mm or less. Even though it is thin, it has excellent heat-shielding properties, so that it can be used as a material for summer clothes to give the buyer a thin, light, and refreshing feel in terms of appearance and touch. The thickness of the heat-shielding fiber cloth is an average value obtained by measuring the thickness of the heat-shielding fiber cloth at any 5 points with a dial thickness gauge (thickness measuring instrument) or the like.

  The lower limit of the thickness of the heat-shielding fiber cloth in the present embodiment is not particularly limited, but is about 0.05 mm from the viewpoint of the strength of the heat-shielding fiber cloth in the present embodiment and tailoring. Further, from the viewpoint that it is possible to give the purchaser a thin, light, and refreshing appearance, touch feeling, and the like while having the structure such as the air permeability in this embodiment, The lower limit of the thickness of the fiber cloth is preferably 0.10 mm or more.

(Heat shield)
In the heat-shielding test, the heat-shielding fiber cloth in the present embodiment preferably has a temperature increase difference of −3 ° C. or more as compared with the unprocessed cloth. The heat-shielding property of the heat-shielding fiber cloth is more preferably −5 ° C. or more in temperature difference as compared with the untreated fabric, and even more preferably −6 ° C. or more as compared to untreated fabric, most preferably the untreated fabric. The difference in temperature rise is -8 ° C or more compared to the above.

  When the heat-shielding property of the heat-shielding fiber cloth has a temperature difference of −3 ° C. or more as compared with the unprocessed cloth, the heat-shielding fiber cloth of the present embodiment can be applied to clothes obtained by using the heat-shielding fiber cloth, particularly, air-conditioning clothes having a blowing means. When used, the wearer can be made more comfortable.

  In addition, the measurement of the heat-shielding property (difference in temperature rise) is the value measured according to the heat-shielding test of Kaken Test Center (formerly Japan Chemical Inspection Association). Details will be described later.

  The heat-shielding fiber cloth in the present embodiment may have a synthetic resin film between two fiber cloths without departing from the gist of the present invention.

  The heat-shielding fiber cloth having the above configuration has excellent heat-shielding properties, and also has low air permeability and is light, and thus when used for clothes having a blowing means such as a fan such as air-conditioning clothes, The air blown between the body and the clothes by the blower can inflate the clothes. As a result, a space is formed between the clothes and the body, and the heat shielding property against heat such as heat rays from sunlight is exerted. Furthermore, the air blown from the blower can be smoothly flown into the clothes, and the air can be discharged from the cuffs, the neck, and the discharge part designed for each clothes, so that the moisture caused by the sweat present in the clothes, Also, heat from body temperature, sunlight, and other factors can be efficiently released to the outside. Therefore, by providing a comfortable environment inside the clothes and reducing the heat of the wearer of the clothes, it is possible to reduce or eliminate the stress against the heat.

[clothes]
Next, the clothes according to the present embodiment will be described. The garment according to the present embodiment is a garment that uses the heat-shielding fiber cloth according to any of the above-described embodiments for at least a part thereof and that has a blower.

  By using the heat-shielding fiber cloth in the present embodiment for clothes having a blowing means, external air is introduced between the clothes and the body, the introduced air passes through the clothes, and necks and cuffs are passed. Since it is discharged from the discharge portion such as, the air containing heat and moisture in the clothes and the skin surface is discharged to the outside. This can reduce the heat felt by the wearer of the clothes. Furthermore, by forming a space between the heat-shielding fiber cloth that constitutes the garment and the body, the heat-shielding fiber cloth is prevented from adhering to the skin, and the surface temperature of the fiber cloth rises due to the heat rays from sunlight. Even in the case of the wear, the effect can be prevented, so that the heat felt by the wearer can be further reduced.

  Further, since the heat-shielding fiber cloth used for clothes has a low air permeability, even if a fan with a light and weak force is used as a blowing means, the clothes are inflated by the air introduced into the clothes from the fan. be able to. Therefore, it is possible to take measures such as reducing the weight of clothes, the weight of the clothes being lightened, and increasing the usage time by attaching a long-life battery to the clothes, thereby providing more comfortable clothes. it can.

  A fan or the like used in a known air-conditioning suit or the like can be used as the air blower (blower) and is not particularly limited.

  The types of clothes include work clothes, shirts, jackets, kappa, ponchos, jackets, dresses, windbreakers, vests, shoes, hats, and gloves, and are not particularly limited. The sleeves of the clothes are long sleeves, short sleeves, etc., and are not particularly limited.

  Further, the synthetic resin film surface of the heat-shielding fiber cloth may be on the body side or the outer side when used for clothes.

[Production method]
Below, the manufacturing method of the heat-shielding fiber cloth which concerns on this Embodiment is demonstrated. The heat-shielding fiber cloth according to the present embodiment is not limited to the one obtained by the manufacturing method described below. Further, in the following description, a part of the above-mentioned contents will be omitted.

  First, a fiber cloth is prepared. The fiber cloth used in the present embodiment may be colored by dyeing, dyeing, printing or the like. In addition, before forming the synthetic resin film on the fiber cloth, water-repellent processing, deodorant processing, antibacterial deodorization processing, antibacterial processing, water absorption processing, moisture absorption processing, flameproof processing, functional processing such as antistatic property is applied. May be. Further, in order to prevent impregnation of the synthetic resin solution and improve the heat shielding property, the fiber cloth may be calendered.

  Next, a synthetic resin solution is applied to at least one surface of the fiber cloth, and a synthetic resin film is formed on the fiber cloth to obtain a heat-shielding fiber cloth. A predetermined amount of metal particles and / or carbon black is added to the synthetic resin solution used in advance. Specifically, as a method of forming the synthetic resin film on the fiber cloth, a knife coater, a bar coater, a gravure coater, an extrusion coater, a textile printing machine (screen, inkjet, etc.) is used on at least one surface of the fiber cloth. A synthetic resin solution in which a synthetic resin is dissolved in a solvent, or a synthetic resin solution that has been heated and melted is applied, and dried or heat-treated at about 80 to 150 ° C. if necessary, or cooled if necessary, and synthesized. A dry film forming method for forming a resin film, or a synthetic resin solution is applied to at least one side of a fiber cloth using a knife coater, a gravure coater, an extrusion coater, etc., immersed in water or the like, and solidified. A method such as a wet method of forming a film (wet coagulation) can be used.

  As another method for forming a synthetic resin film on a fiber cloth, a knife coater, a bar coater, a gravure coater, or an extrusion coater is used to apply a synthetic resin solution onto a release paper or a release film, which is necessary. Depending on the temperature, a synthetic resin film is formed by drying at 80 to 150 ° C., and an adhesive such as a hot-melt type, a moisture curing type, or a two-component type is applied to the synthetic resin film using a gravure coater or a knife coater. Shape, linear shape, or the entire surface, etc., and then dry it if necessary, and laminate the fiber cloth on the adhesive application surface and press or heat press to bond the fiber cloth and the synthetic resin film. Accordingly, a method of forming a synthetic resin film on one surface of the fiber cloth may be used.

  After forming a synthetic resin film on at least one side of the fiber cloth, further water repellent processing, deodorant processing, antibacterial deodorant processing, antibacterial processing, water absorption processing, moisture absorption processing, flameproof processing, antistatic property, texture adjustment processing, etc. May be processed.

  Further, a method for producing a heat-shielding fiber cloth having a synthetic resin film (wet-coagulated and formed into a film) using a wet method will be described in detail.

  As described above, the synthetic resin solution is applied to at least one surface of the fiber cloth. As the synthetic resin contained in the synthetic resin solution, a synthetic resin that solidifies by being immersed in water is used, and a polyurethane resin is preferably used.

  In the synthetic resin solution used, metal particles and / or carbon black are added, and if necessary, the spherical particles, pigments, crosslinking agents, ultraviolet absorbers, antioxidants, deodorants, and the like described above. You may add and mix a softening agent for texture adjustment, a cell adjusting agent, a flameproofing agent, a dye transfer sublimation inhibitor, and the like.

  The synthetic resin solution may be applied to the fiber cloth by using a knife coater, a bar coater, a reverse coater, a gravure coater, or the like.

  Next, the fiber cloth coated with the synthetic resin solution is immersed in water and wet-coagulated to form a synthetic resin film. At this time, the water for immersing the fiber cloth may contain an organic solvent such as dimethylformamide (hereinafter referred to as DMF) used as a solvent for the synthetic resin solution in an amount of about 5 to 20% in advance.

  At this time, the microporous film is formed in the thick part of the synthetic resin film, while the nonporous film is formed in the part thinner than about 1 to 2 μm. When the synthetic resin film is thin, that is, when the amount of resin forming the synthetic resin film is small, the synthetic resin solution is partially applied in a large amount such as the concave portion of the fiber cloth, and the portion where the thickness of the synthetic resin film is thick is small. The other part of the synthetic resin film, which is porous and has a smaller thickness, is non-porous, and the film is a mixture of non-porous and micro-porous. In such a case, a place where the amount of resin is large and the thickness of the synthetic resin film is thick becomes microporous and becomes soft. Further, even in a portion where the amount of resin is small and the thickness of the synthetic resin film is thin, the metal particles are present, so that the heat shielding property is excellent. In particular, when scale-like metal particles are used, the synthetic resin film with a small amount of resin has a large particle size compared to the thickness of the synthetic resin film even in a thin portion of the synthetic resin film. However, since it exists along the surface of the fiber cloth, a heat-shielding fiber cloth having excellent heat-shielding properties can be obtained.

  Next, the fiber cloth coated with the synthetic resin solution immersed in water is rinsed with hot water at about 20 to 80 ° C. After that, the fiber cloth coated with the washed synthetic resin solution is dried at about 80 to 150 ° C. using a hot cylinder or an air oven to obtain a heat-shielding fiber cloth.

  Thereafter, if necessary, within the range not departing from the gist of the present invention, the obtained heat-shielding fiber cloth is subjected to water repellent treatment, deodorant treatment, antibacterial deodorization treatment, antibacterial treatment, water absorption treatment, moisture absorption treatment, flameproof treatment. Finishing processing such as antistatic property and texture adjusting processing may be performed, and another resin film or another fiber cloth may be provided on the synthetic resin film.

  Hereinafter, the present invention will be further described with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. In addition, in an Example, "part" means a mass part and "%" means the mass%.

  The performance of the obtained heat-shielding fiber cloth is measured by the following method.

[A: Heat shield (temperature difference)]
The measurement was performed according to the heat shield test of Kaken Test Center (former Japan Chemical Inspection Association).

  Specifically, first, a processed cloth (heat-shielding fiber cloth in Examples and Comparative Examples) and an unprocessed cloth (fiber cloth colored in the same color as the processed cloth) were prepared as test pieces. Further, a black drawing paper having the same size as the test piece was prepared. In a 20 ° C environment, leave the black drawing paper stationary, and fix the test piece at a position 5 mm above the black drawing paper so that the synthetic resin film surface is on the black drawing paper side, and place the thermocouple sensor at the center of the bottom surface of the black drawing paper. Attached. Irradiate the lamp from the test piece side (the fiber cloth surface side of the test piece is the irradiation surface), and the temperature of the processed cloth and the unprocessed cloth at 5 second intervals from 10 minutes to 15 minutes after the start of irradiation of the lamp. The average of the differences (temperature difference = temperature of the processed cloth-temperature of the unprocessed cloth) was calculated and used as the heat shielding property (difference in temperature rise). The lamp used was a reflex lamp (Ilamp Spot, PRS500W, 100V, manufactured by Iwasaki Electric Co., Ltd.), and the distance between the test piece and the lamp was 50 cm. The illuminance was adjusted with a transformer so that the surface of the test piece had a lux of 1500 lux.

[B: Thickness]
(Thickness of fiber cloth and heat-shielding fiber cloth)
The thickness of the fiber cloth and the heat-shielding fiber cloth is measured by measuring the thickness of the heat-shielding fiber cloth or any of the five locations of the fiber cloth with a dial thickness gauge (thickness measuring instrument Ozaki Seisakusho, PEACOCK type H), and averaging the two. Calculated from the value.

(Thickness of synthetic resin film)
The thickness of the synthetic resin film was measured from a cross-sectional photograph of the heat-shielding fiber cloth using a scanning electron microscope (SEMEDX Type H type: Hitachi Science Systems Co., Ltd.). In the following examples, since the synthetic resin film is thinner than the concavities and convexities of the fiber cloth, the synthetic resin film does not have a uniform thickness over the entire fiber cloth, and the thickness varies depending on the location. Thicknesses 1, 2 and 3) were measured at arbitrary 3 places, and the average value of the thicknesses at 3 arbitrary places at thicknesses 1, 2 and 3 was taken as the thickness of each place. Further, the average value of the thicknesses 1, 2 and 3 was set to the thickness 4.

  Thickness 1: The maximum and minimum thickness of the synthetic resin film existing on the concave portion due to the thread has unevenness in the part where the warp yarn of the fiber cloth is exposed on the surface and the part where the weft yarn is exposed on the surface. The thickness was measured, and the value obtained by dividing the sum of the maximum thickness and the minimum thickness by 2 was set as the thickness 1.

  Thickness 2: The convex portion formed by the yarn in the measurement of the thickness 1 is a plurality of fibers that form the yarn that forms the convex portion formed by the yarn, and is adjacent to each other on the fiber surface located in the outermost layer of the plurality of fibers. There are irregularities between the fibers. The minimum thickness of the synthetic resin film formed on the surface of the fiber located in the concave portion of the adjacent fibers was measured in a vertical cross-sectional photograph of the fiber of the convex portion by the yarn, and was set to be 2.

  Thickness 3: In the photograph of the cross section used for the measurement of the thickness 2, the minimum thickness of the synthetic resin film formed on the surface of the fiber located in the convex portion of the adjacent fibers was measured and set to be the thickness 3.

  Thickness 4: A value obtained by dividing the sum of the above three thicknesses (thicknesses 1, 2, and 3) by 3 was defined as the thickness 4 of the synthetic resin film.

[C: unit weight]
The heat-shielding fiber cloth sample cut into 100 cm ² was used as a measurement sample, the weight was measured using an electronic balance, and the weight per 1 m ² was converted to the basis weight of the heat-shielding fiber cloth.

[D: Washing process]
In order to confirm the abrasion resistance of the heat-shielding fiber cloth, the washing treatment was performed by the following method.

  It was washed 20 times according to JIS L0217 103 method. The drying was performed once by hanging after 20 times of washing treatment. The heat-shielding fiber cloth after washing and drying was used as a test piece of the processed cloth in the above [A: Heat-shielding property (difference in temperature rise)], and a heat-shielding test was conducted.

(Example 1)
In Example 1, as the fiber cloth, a polyester plain fabric dyed (dyeing) with a disperse dye in gray (light color) (vertical yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, vertical density 181 / 2.54 cm, A material having a horizontal density of 93 pieces / 2.54 cm and a basis weight of 99 g / m ² ) which had been subjected to a water repellent treatment with a fluorine water repellent was prepared. In the measurement of the heat shield property, the fiber cloth in this state was used as an unprocessed cloth.

Next, the following synthetic resin solution was applied to one side of the fiber cloth using a knife coater, solidified in water, washed with hot water, washed with water and dried to form a synthetic resin film on the fiber cloth. The amount of synthetic resin deposited by forming the synthetic resin film was 7 g / m ² .

[Synthetic resin solution]
One-component polyurethane resin (ester type, solid content 30%) 100 parts Silver pigment (scaly aluminum particles 43%, average particle size 9 μm) 20 parts Isocyanate cross-linking agent 1 part DMF 50 parts

  Next, finishing setting was performed at 170 ° C. to obtain a heat-shielding fiber cloth. The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

  In addition, the state of adhesion of the synthetic resin film to the fiber cloth is such that unevenness is formed in the part of the fiber cloth where the warp yarn is exposed on the surface and the part where the weft yarn is exposed on the surface. The thickness 1 of the existing synthetic resin film was 12 μm. Further, in the convex portion formed by the yarn at this time, the unevenness is formed by the plurality of fibers that form the yarn that forms the convex portion formed by the yarn, and the fibers that are located in the outermost layer of the plurality of fibers form an irregularity. The thickness 2 of the synthetic resin film formed on the surface of the fiber located in the concave portion by the matching fiber was 5 μm. Further, the thickness 3 of the synthetic resin film formed on the surface of the fiber located in the convex portion formed by the adjacent fibers was 0.8 μm. A thickness 4 obtained by averaging the thicknesses 1 to 3 was 5.9 μm.

  Also, when observing the surface of the synthetic resin film formed on the obtained heat-shielding fiber cloth with an electron micrograph, the surface of the fiber cloth is covered with the synthetic resin film, but the yarn of the fiber cloth of the synthetic resin film is covered. In the places located on the convex portions according to (1), there were places where holes were formed and where fibers constituting the fiber cloth were confirmed. The holes and fibers could not be visually confirmed.

  Moreover, as for the scale-like aluminum particles in the synthetic resin film, the scale-like surface and the surface of the fiber cloth were often located substantially parallel to each other. Further, although the synthetic resin was slightly impregnated between the yarns constituting the fiber cloth and the fibers constituting the yarns, the scale-like aluminum particles were not impregnated. Therefore, it is considered that most of the scale-like aluminum particles are arranged on the surface of the fiber cloth and effectively act on the reflection of heat rays such as sunlight.

(Example 2)
In Example 2, as the fiber cloth, a polyester plain weave dyed brown (medium color) with a disperse dye (vertical yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, vertical density 181 / 2.54 cm, horizontal density 93) Book / 2.54 cm (Basis weight: 99 g / m ² ) prepared by water-repellent treatment with a fluorine-based water repellent, and the same operation as in Example 1 was performed except that the following synthetic resin solution was used. Then, a heat-shielding fiber cloth was obtained. The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

  The state of adhesion of the synthetic resin film on the fiber cloth and the arrangement of the scale-like aluminum particles were the same as in Example 1, but the particles supposed to be carbon black were synthesized by impregnating the fibers into the fiber cloth. It was also present in the resin.

[Synthetic resin solution]
One-component polyurethane resin (ester-based, solid content 30%) 100 parts Silver pigment (scaly aluminum particles 43%, average particle size 9 μm) 10 parts Black pigment (carbon black 20%) 10 parts Isocyanate crosslinking agent 1 part DMF 50 copies

(Example 3)
In Example 3, as the fiber cloth, a polyester plain woven fabric dyed brown (medium color) with a disperse dye (vertical yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, vertical density 181 / 2.54 cm, horizontal density 93 present per 2.54 cm. basis weight 99 g / m ^2), except that was prepared that the water-repellent fluorine-based water repellent is carried in the same manner as in example 1 to obtain a heat insulation fiber fabric . The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

(Example 4)
In Example 4, as the fiber cloth, a white nylon plain woven fabric (vertical yarn 56 decitex 40 filament, weft yarn 56 decitex 40 filament, vertical density 186 / 2.54 cm, horizontal density 106 / 2.54 cm, basis weight 79 g / m ² ), an ink jet printer was used to partially print a vegetation pattern with an acid dye ink, and a water repellent treatment with a fluorine-based water repellent was prepared. In the measurement of the heat shield property, the fiber cloth in this state was used as an unprocessed cloth.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 was applied to one side of the fiber cloth using a knife coater, coagulated in water, washed with hot water, washed with water, and dried to form a synthetic resin film. It was formed into a fiber cloth. The amount of synthetic resin deposited by forming the synthetic resin film was 5 g / m ² .

  Next, finishing setting was performed at 160 ° C. to obtain a heat-shielding fiber cloth. The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

  In the measurement of the thickness of the synthetic resin film, the difference in thickness (difference between thickness 2 and 3 with respect to thickness 1) due to the unevenness of the portion where the warp yarn and the weft yarn are present on the surface of the fiber cloth is measured. It was smaller than in Examples 1, 2 and 3. The arrangement of scale-like aluminum particles in the synthetic resin film was the same as in Example 1.

(Example 5)
In Example 5, as the fiber cloth, a woven fabric manufactured from cationic dyeable polyester fiber dyed with a cationic dye and a reactive dye in dark blue (dark color) and wool (weight per unit area: 93 g / m ² ; dot on one side at approximately 1 mm intervals) Prepared by subjecting a woven fabric having a ridge-like convex portion) to a water repellent treatment with a fluorine-based water repellent. In the measurement of the heat shield property, the fiber cloth in this state was used as an unprocessed cloth.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 was applied to the surface of the fiber cloth having dot-like convex portions using a knife coater, solidified in water, washed with hot water, washed with water, and dried. Then, a synthetic resin film was formed. The amount of synthetic resin deposited by forming the synthetic resin film was 10 g / m ² . Further, in the synthetic resin film, holes of about 0.2 to 0.3 mm, which can be visually confirmed due to the convex portion on the back surface of the fiber cloth, were regularly opened on the entire surface at intervals of about 1 mm.

  Next, finishing setting was performed at 150 ° C. to obtain a heat-shielding fiber cloth. The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

  In the measurement of the thickness of the synthetic resin film, the difference in thickness due to the unevenness between the part where the warp yarns and the part where the weft yarns are present on the surface of the fiber fabric (difference between thicknesses 2 and 3 with respect to thickness 1, (Except for the convex portions existing in a dot shape on the surface with a feeling of about 1 mm), it was smaller than in Examples 1, 2 and 3. The arrangement of scale-like aluminum particles in the synthetic resin film was the same as in Example 1.

(Example 6)
In Example 6, as the fiber cloth, a polyester fabric (dye yarn 33 decitex 36 filaments, weft yarn 56 decitex 72 filaments, lengthwise density 292) dyed in a dark blue color (deep color) with a disperse dye and having vertical stripes on the front and back due to ridges A line / 2.54 cm, a horizontal density of 208 lines / 2.54 cm, and a basis weight of 101 g / m ² ) were prepared by water-repellent finishing with a fluorine-based water repellent. In the measurement of the heat shield property, the fiber cloth in this state was used as an unprocessed cloth.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 was applied to one side of the fiber cloth using a knife coater, coagulated in water, washed with hot water, washed with water, and dried to form a synthetic resin film. Formed. The amount of synthetic resin deposited by forming the synthetic resin film was 18 g / m ² . Further, the synthetic resin film had holes where the major axis was about 0.5 mm and could be visually confirmed in some places in the protrusions of the ridges, probably because of the influence of the unevenness due to the vertical stripes of the fiber cloth.

  Next, finishing setting was performed at 170 ° C. to obtain a heat-shielding fiber cloth. The performance of the obtained heat-shielding fiber cloth is shown in Table 1.

  In the measurement of the thickness of the synthetic resin film, the difference in thickness due to the unevenness difference between the part where the warp yarns are out and the part where the weft yarns are out on the surface of the fiber cloth (the difference between the thickness 2 and 3 with respect to the thickness 1 and the protrusion of the ridge) (Excluding parts) was smaller than in Examples 1, 2 and 3. Further, as compared with the other examples, the impregnation of the synthetic resin into the fiber cloth was observed more frequently. The arrangement of scale-like aluminum particles in the synthetic resin film was the same as in Example 1.

(Comparative Example 1)
In Comparative Example 1, the polyester plain woven fabric prepared in Example 1 was used as a heat-shielding fiber cloth without forming a synthetic resin film and forming a metal (titanium) film on one surface of the fiber cloth by sputtering. I was there. Various performances of the obtained heat-shielding fiber cloth were measured and shown in Table 1.

(Reference example 1)
In Reference Example 1, a fibrous fabric similar to the fibrous fabric (a fibrous fabric having no synthetic resin film formed thereon) used as the unprocessed fabric in the measurement of the heat shield property in Example 1 was calendered. The heat shielding property was measured as a processed cloth (fiber cloth on which a synthetic resin film was not formed), and the results are shown in Table 1.

  From the above results, the aluminum particles in Examples 1 to 6 and the heat-shielding fiber cloth containing the aluminum particles and carbon black in the synthetic resin film were subjected to calendering on the fiber cloth in Reference Example 1 and were exposed to sunlight. It was found that the fiber cloth has a higher heat shield property than the fiber cloth having an increased reflectance of heat rays and the heat shield fiber cloth in which the metal film is provided on one surface of the fiber cloth in Comparative Example 1 by sputtering.

  In addition, by comparing Example 1 and Example 2, Example 1 in which the scale-like aluminum particles are contained in the synthetic resin film in a large amount is superior in heat shielding property to the one including scale-like aluminum particles and carbon black particles. Was there.

  Further, as in Examples 5 and 6, even a heat-shielding fiber cloth using a darkly colored fiber cloth has excellent heat-shielding properties.

  It should be noted that Example 4 in which the colored portion was less in the fiber cloth and the colored color was lighter than the other Examples (light color), Example 4 showed further excellent heat shielding properties.

  With respect to the heat-shielding fiber cloth having a synthetic resin film containing metal particles (Example 1) and the heat-shielding fiber cloth having a metal film formed by sputtering (Comparative Example 1), the wear resistance of each film is confirmed. Therefore, a wear test was performed according to JIS L0849 Dyeing fastness test method against friction according to the friction tester type II (Gakushin type) method.

  Specifically, the synthetic resin film surface or the metal film surface of each heat-shielding fiber cloth is used as a friction surface, and a white cotton cloth for friction is brought into contact with the friction surface by applying a load of 2N, and 100 times of reciprocating friction is performed. The state of contamination on the white cotton cloth for rubbing after two round trips was observed. The test results were judged by grade. The contamination judgment grade is indicated by a numerical value. The fifth grade has the least contamination of the rubbing cotton cloth, and the first grade has the most contamination of the rubbing cotton cloth. That is, if the judgment grade is 5, the separation of metal particles from the heat-shielding fiber cloth is the smallest, and if the judgment grade is 1, the separation of metal particles from the heat-shielding fiber cloth is the largest. As the white cotton cloth for rubbing, a cotton cloth in a dry state and a wet state of about 100% was used.

  As a result of the friction test, the heat-shielding fiber cloth obtained in Example 1 has a judgment grade of 3-4 in a test using a dry white cotton cloth for rubbing (judgment grade between grades 3 and 4). In addition, since the judgment grade in the test using the moistened white cotton cloth for rubbing was 4-5 grade (the judgment grade between grade 4 and grade 5), excellent wear resistance was obtained in any test. Showed sex. In particular, in a test using a moistened white cotton cloth for friction, even after 100 reciprocating friction tests, the white cotton cloth for friction was scarcely soiled and metal particles in the synthetic resin film were not separated. From this, it was confirmed that the heat-shielding fiber cloth obtained in Example 1 had particularly excellent wear resistance. Therefore, the heat-shielding fiber cloth obtained in Example 1 has excellent abrasion resistance even in a wet state due to sweat adhering to the heat-shielding fiber cloth and in a wet state during the washing process, and therefore, the heat-shielding fiber It was confirmed that it was suitable as a material used for.

  Further, the heat-shielding fiber cloth obtained in Comparative Example 1 has a grade 2 in a test using a dry white cotton cloth for rubbing, and a grade 1 in a test using a wet white cotton cloth for rubbing. -2 class (judgment grade between the 1st class and the 2nd class), and the white cotton cloth for friction after 100 times reciprocating friction test were all stained with a very dark color (especially wet white cotton cloth for friction). In the test with). This shows that the heat-shielding fiber cloth obtained in Comparative Example 1 was rubbed with a white cotton cloth for friction, whereby the metal was separated from the metal film on the heat-shielding fiber cloth.

  The heat-shielding fiber cloth having the metal film thus formed by sputtering is vulnerable to friction, and particularly when the heat-shielding fiber cloth is wet with sweat, and in a wet state during the washing process, It became weak against abrasion, and it was confirmed that improvement is desired as a material for summer.

  Further, using the heat-shielding fiber cloths obtained in Examples 1 to 6, working clothes with a fan attached were created, the working clothes were worn, and the work was performed outdoors during the day. It swelled well, created a space between the fiber cloth and the body, and air flowed between the work clothes and the body, making it feel cooler than before. In addition, the work wear was felt lightly.

Claims (10)

A heat-shielding fiber cloth having a synthetic resin film formed on at least one surface of the fiber cloth,
The synthetic resin film contains metal particles and / or carbon black,
The heat-shielding fiber cloth has an air permeability of 1.0 cm ³ / cm ² · s or less measured according to JIS L1096 Frazier type method.
Heat-shielding fiber cloth.   The heat-shielding fiber cloth according to claim 1, wherein the metal particles are aluminum particles.   The heat-shielding fiber cloth according to claim 1 or 2, wherein the metal particles are scaly. The heat-shielding fiber cloth according to any one of claims 1 to 3, having a basis weight of 170 g / m ² or less.   The heat-shielding fiber cloth according to any one of claims 1 to 4, which has a thickness of 0.5 mm or less.   The heat-shielding fiber cloth according to any one of claims 1 to 5, wherein the synthetic resin film is a polyurethane resin film formed by wet coagulation.   The heat-shielding fiber cloth according to claim 1, wherein the synthetic resin film has a thickness of 30 μm or less. The heat-shielding fiber cloth according to any one of claims 1 to 7, wherein an adhesion amount of the synthetic resin forming the synthetic resin film is 1 g / m ² or more and 30 g / m ² or less.   The heat-shielding fiber cloth according to any one of claims 1 to 8, which is a heat-shielding fiber cloth used for at least a part of clothes having an air blowing unit.   A garment that uses the heat-shielding fiber cloth according to any one of claims 1 to 9 in at least a part thereof and has a blower.