JP7112932B2 - Heat shielding fiber fabric and clothing using it - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat-shielding fiber fabric, which is a fiber fabric having heat-shielding properties, and clothing using the same.

In recent years, the number of midsummer days when the maximum temperature exceeds 30°C is increasing. In addition, there are many extremely hot days with a maximum temperature of 35°C, and regions with temperatures exceeding 40°C are occurring all over Japan. Even in such an unprecedentedly hot environment, work is being carried out at factories and construction sites. In such a situation, in order to reduce the heat load on the workers as much as possible, an electric fan (hereinafter referred to as a fan) or other air blowing means is attached to the work clothes to blow outside air between the body and the clothes. Clothes called air-conditioned clothes have also come to be seen, in which high-temperature air and sweat vapor inside the clothes are discharged out of the clothes by sending them into the clothes.

Clothes with air blowing means such as fans are effective in reducing the temperature and humidity inside the clothes. Clothes that can further reduce the temperature inside the clothes are desired.

In addition, in the recent heat, in addition to the use such as work clothes, outside sales people, leisure outings, daily shopping and walking, children playing outside, etc., the load against heat is further reduced. Clothing that is worn is desired.

Therefore, conventionally, a fiber fabric having a heat-shielding property (hereinafter referred to as a heat-shielding fiber fabric) is used for clothes. Various methods have been proposed for imparting heat-shielding properties to heat-shielding fiber fabrics. As a method for imparting heat shielding properties, for example, by applying a calendering process to the fiber fabric or using a densely packed high-density fabric such as using flat yarn as the yarn constituting the fiber fabric, A method of blocking sunlight to prevent temperature rise is known (Patent Document 1). In addition, a method of forming a vapor deposition layer of aluminum, titanium, or the like on the surface of the textile fabric and reflecting heat rays from the sun to suppress the temperature rise inside the vehicle, and conversely, reflecting the heat rays from the body. There is also known a method of keeping the temperature inside clothes by using (Patent Literature 2 and Patent Literature 3).

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

However, due to the calendering process, the fiber fabric that shields the sunlight cannot obtain a sufficient heat shielding effect, and the temperature rise inside the clothes cannot be sufficiently suppressed.

In addition, fiber fabrics, in which a metal layer such as aluminum or titanium is formed on the fiber surface by vapor deposition or sputtering, are vulnerable to abrasion. heat insulation is reduced.

Therefore, the present invention has been made in view of the above circumstances, and it is possible to suppress the temperature rise inside the clothes by blocking the heat rays from the sunlight, etc., and furthermore, to prevent the deterioration of the heat shielding property when washing. To provide a heat-shielding fiber fabric or the like capable of suppressing heat and further reducing the feeling of hotness of a wearer of clothes when used for clothes.

The inventors of the present invention have made the present invention as a result of intensive studies in order to solve the above problems. That is, the heat-shielding fiber fabric according to the present invention has the following configuration.
(1) A heat-shielding fiber fabric according to the present invention is a heat-shielding fiber fabric having a synthetic resin film formed on at least one side of the fiber fabric, wherein 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 method.
(2) In the heat-shielding fiber fabric according to the present invention, the metal particles are preferably aluminum particles.
(3) Moreover, in the heat-shielding fiber fabric according to the present invention, the metal particles are preferably scale-like.
(4) Further, the heat-shielding fiber fabric according to the present invention preferably has a basis weight of 170 g/m ² or less.
(5) Further, the heat-insulating fiber fabric according to the present invention preferably has a thickness of 0.5 mm or less.
(6) In the heat-shielding fiber fabric according to the present invention, the synthetic resin film may be a polyurethane resin film formed by wet coagulation.
(7) Moreover, in the heat-shielding fiber fabric according to the present invention, the synthetic resin film preferably has a thickness of 30 μm or less.
(8) Further, in the heat-shielding fiber fabric according to the present invention, the amount of synthetic resin that constitutes the synthetic resin film is preferably 1 g/m ² or more and 30 g/m ² or less.
(9) Further, the heat-shielding fiber fabric according to the present invention is preferably a heat-shielding fiber fabric used for at least a part of clothes having air blowing means.
(10) A garment according to the present invention uses at least a part of the heat-shielding fiber fabric according to any one of the above, and has air blowing means.

The heat-shielding fiber fabric or the like according to the present invention can suppress the temperature rise in clothes by blocking heat rays from sunlight and the like, and can suppress the deterioration of heat-shielding properties when washing and the like are performed. When used in clothes, it can reduce the feeling of hotness of the wearer of the clothes.

The heat-shielding fiber fabric according to the present invention and clothing using the same will be described below. The following aspects are merely examples for explaining the present invention, and are not intended to limit the present invention to this aspect only. The present invention can be implemented in various forms without departing from its spirit.

[Heat-insulating fiber fabric]
The heat-shielding fiber fabric according to this embodiment is a heat-shielding fiber fabric having a synthetic resin film formed on at least one side of the fiber fabric. The synthetic resin film contains metal particles and/or carbon black. Furthermore, the heat-shielding fiber fabric 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 method.

(fiber fabric)
Fiber fabrics that can be used for the heat-shielding fiber fabric in the present embodiment include synthetic fibers such as polyester, nylon, acrylic and polyurethane, semi-synthetic fibers such as diacetate, regenerated fibers such as rayon, cotton, wool, silk, It may be a fiber fabric using natural fibers such as hemp alone, or a fiber fabric obtained by mixing, blending, mixing, or mixing two or more of these fibers, and may be in any form such as woven fabric, knitted fabric, or non-woven fabric. may be a fiber fabric.

Furthermore, the fiber fabric in the present embodiment may be colored by dyeing, printing, or the like. The heat-shielding fiber fabric of the present embodiment has excellent heat-shielding properties even when it is colored white, light-colored, or dark-colored. In addition, the fiber fabric may have functionalities such as water repellency, deodorizing properties, antibacterial and deodorizing properties, bactericidal properties, water absorbency, hygroscopic properties, flame retardancy, and antistatic properties.

Further, within the scope of the present invention, the fiber fabric is a fiber laminated with 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. It may be cloth.

(synthetic resin film)
Synthetic resins constituting the synthetic resin film formed on the heat-insulating fiber fabric in the present embodiment include polyurethane resins, polyester resins, polyamide resins, acrylic resins, silicone resins, polyfluororesins, polyethylene resins, styrene-butadiene resins, Nitrile-butadiene resin, epoxy resin, etc. can be used. These synthetic resins may be used alone or in combination of two or more. These synthetic resins are available in the form of a solution dissolved in a solvent, an emulsion dispersed in water, or solid chips.

The synthetic resin is preferably a polyurethane resin that can be wet coagulated to form a film. A urethane resin film formed by wet coagulation follows irregularities on the surface of the fiber fabric and changes in thickness, especially when formed to be thin. Furthermore, the thick portion of the urethane resin film is a microporous film, and the thin portion is a non-porous film. Therefore, when the synthetic resin film is composed of a polyurethane resin formed by wet coagulation, it is easy to obtain a light and soft heat-insulating fiber fabric. In addition, a heat-shielding fiber fabric having excellent abrasion resistance can be obtained even in a state of being wet with washing water or the like.

As the polyurethane resin, an ether type, an ester type, an ester/ether type, a carbonate type, or the like can be used, but there is no particular limitation. As the polyurethane resin, a one-pack type, a two-pack type, or the like can be used, but there is no particular limitation. In the case of forming a film by wet coagulation, the polyurethane resin is preferably an ester-based or ether-ester-based polyurethane resin from the viewpoint of film-forming properties. Especially from the viewpoint of abrasion resistance when wet, it is more preferable that the polyurethane resin is an ester type.

Moreover, 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 is within the scope of the present invention, for example, a uniform thickness nonporous film, a uniform thickness porous film, a film having through holes in the thickness direction, A film without pores, a film without a partial resin film such as a fiber cloth or a portion corresponding to the convex part of the fiber constituting the fiber cloth, a film with a different thickness depending on the location, a grid-like film, or a dot-like film It may exist, and is not particularly limited.

Moreover, the synthetic resin film may have a surface-treated layer made of a synthetic resin on its surface without departing from the gist of the present invention. By providing the synthetic resin film with the surface treatment layer, it is possible to improve the abrasion resistance of the heat-shielding fiber fabric and to improve the feel of the synthetic resin film surface. Any synthetic resin can be used for the surface treatment layer depending on the purpose. The surface treatment layer may be a layer covering the entire surface of the synthetic resin film, or may be a layer formed on the synthetic resin film in a shape such as dots or lines. The thickness of the surface treatment layer is not particularly limited as long as it does not deviate from the gist of the present invention, but it is preferably less than 5 μm from the viewpoint of the basis weight and feel of the resulting heat-shielding fiber fabric.

The thickness of the synthetic resin film in the present embodiment is preferably 30 μm or less from the viewpoint of texture and wearability in hot weather. The thickness of the synthetic resin film is more preferably 20 μm or less, still more preferably 15 μm or less, still 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, and the air permeability of the heat-shielding fiber fabric is maintained at 1.0 cm ³ /cm ² s or less according to JIS L1096 Frazier method, and the fiber fabric The thickness may be sufficient as long as the metal particles and/or carbon black can be fixed to the surface of and the durability against abrasion during washing can be maintained. The lower limit of the thickness of the synthetic resin film is about 0.5 μm, although it depends on the amount of the metal particles.

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

Further, the amount of the synthetic resin that constitutes the synthetic resin film is preferably 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, still 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, more preferably 4 g/m ² or more. It should be noted that the adhesion amount of the synthetic resin forming the synthetic resin film is the dry weight per unit area of the synthetic resin film formed on the fiber cloth. By setting the adhesion amount of the synthetic resin constituting the synthetic resin film to 30 g/m ² or less, the fabric weight of the resulting heat-shielding fiber fabric is reduced, and when used in clothes having a blowing means such as a fan, the clothes are blown by the blower. By sending air into the air, the clothes are sufficiently inflated, and it becomes easier to give the wearer a heat shielding and cooling effect. In addition, the touch and texture peculiar to synthetic resin films are less likely to occur, making it less likely to cause discomfort to the wearer as a clothing material for summer. By setting the adhesion amount of the synthetic resin constituting the synthetic resin film to 1 g/m ² or more, it is possible to obtain sufficient heat shielding properties, improve the durability of the heat shielding properties, and improve air permeability. Easier to keep below the specified value.

(metal particles, carbon black)
The synthetic resin film in this embodiment contains metal particles and/or carbon black. The metal particles and/or carbon black should preferably have the ability to reflect or absorb heat rays. Since the metal particles and/or carbon black contained in the synthetic resin film reflect or absorb the heat rays of sunlight, the inclusion of the metal particles and/or carbon black in the synthetic resin film improves the heat insulating properties of the heat-shielding fiber fabric. improves. Therefore, when the heat-shielding fiber fabric of the present embodiment is used for clothes, it is possible to sufficiently suppress the temperature rise in the clothes. 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 fall off from the heat-shielding fiber fabric due to abrasion during washing, etc. It is possible to suppress the deterioration of the heat shielding property in the case of Therefore, when the heat-shielding fiber fabric of the present embodiment is used for clothes for summer where sweat is likely to occur, the heat-shielding property does not easily deteriorate even after repeated washing.

Specific examples of the metal particles include particles of aluminum, titanium, silver, gold, platinum, copper, etc. At least one of these may be included. As the metal particles, porous bodies such as zeolite carrying metal particles can also be used. In particular, aluminum particles are preferable as the metal particles because of their high heat ray reflectivity and their little effect on the color of even lightly colored fiber fabrics. In addition, when silver is used as the metal particles, antibacterial properties can be imparted to the heat-shielding fiber fabric.

Moreover, when using a fiber fabric colored in a dark color, it is preferable that aluminum particles and/or carbon black are contained in the synthetic resin film. In particular, when carbon black is contained in the synthetic resin film, the temperature of the heat-shielding fiber fabric rises because the carbon black absorbs infrared rays, which is not preferable as a fiber fabric for suppressing heat. When the heat-shielding fiber fabric is used for clothes having air blowing means such as a fan, the clothes are inflated with air and the heat-shielding fiber fabric does not come into contact with the wearer's skin. Therefore, even if the temperature of the heat-shielding fiber fabric rises due to the carbon black, the wearer hardly feels the temperature rise of the heat-shielding fiber fabric, and furthermore, the carbon black absorbs the heat rays from the sunlight and reaches the human body. Since the amount of infrared rays is reduced, the effect of relieving heat is exhibited. Therefore, it is possible to reduce the feeling of hotness in the wearer of the clothes using the heat-shielding fiber fabric.

The shape of the metal particles is not particularly limited, and may be, for example, spherical, needle-like, or scaly, preferably scaly. When the shape of the metal particles is scaly, it is difficult for the metal particles to impregnate between the yarns and fibers constituting the fiber fabric, and the metal particles tend to stay on the surface of the fiber fabric, so that the heat shielding property can be exhibited more efficiently. can.

In addition, even in a heat-insulating fiber fabric having a small amount of synthetic resin that forms the synthetic resin film attached and a thin thickness of the synthetic resin film, as in the heat-insulating fiber cloth in the present embodiment, scale-like metal particles When using, the surface of the scale-like metal particles is arranged substantially parallel to the surface of the fiber fabric, so that metal particles having a larger particle diameter in the surface direction than the thickness of the synthetic resin film can be used. Therefore, the heat shielding fiber fabric has excellent heat ray reflecting performance. Therefore, the heat shielding property of the heat shielding fiber fabric is further improved. Furthermore, since the wide surface of the scale-like particles remaining on the fiber surface is bonded with the synthetic resin along the surface of the fiber cloth or the surface of the fiber, the entire metal particles are incorporated into the synthetic resin film, The portion where the metal particles protrude from the synthetic resin film is reduced, and the metal particles are more difficult to fall off from the heat-insulating fiber fabric due to abrasion during washing, etc., so the heat-shielding fiber fabric is further excellent in washing durability. becomes.

Moreover, the particle diameter 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 dispersing in a resin solution becomes easy, and the metal particles are less likely to come off due to abrasion during washing or wearing. The particle diameter is the average value of the long diameters of arbitrary plural particles (for example, 5 particles) observed with an electron microscope.

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 still 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. be. The upper limit of the metal particle content is preferably 100 parts by mass or less with respect to 100 parts by mass of the synthetic resin solid content forming the synthetic resin film, and from the viewpoint of durability against wear etc., it is 80 parts by mass or less, more preferably 50 parts by mass. Part by mass or less.

Furthermore, the synthetic resin film may contain a pigment, a cross-linking agent, an ultraviolet absorber, an antioxidant, a deodorant, an antibacterial agent, an anti-flame agent, and the like. In addition, when the air blower such as a fan is stopped, the resin film surface of the heat-insulating fiber fabric has spherical organic fine particles to improve the feel when it touches the skin, and has corners to give a rough feeling. Inorganic fine particles and the like may be contained in the synthetic resin film.

(Breathability)
The heat-shielding fiber fabric in the present embodiment has an air permeability of 1.0 cm ³ /cm ² ·s or less measured according to JIS L1096 Frazier 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.

The air permeability is 1.0 cm ³ /cm ² ·s or less, so that when the heat-shielding fiber fabric according to the present embodiment is used in clothes having air blowing means, air is sent into the clothes from the air blowing means. At that time, the garment expands to form a space between the body and the heat-insulating fiber fabric that constitutes the garment. As a result, it is possible to prevent the heat-shielding fiber fabric from sticking to the skin, and even if the surface temperature of the fiber fabric rises due to the heat rays from the sun, the effect can be prevented, so the heat felt by the wearer can be reduced. can be reduced further.

If the air permeability exceeds 1.0 cm ³ /cm ² ·s, when the heat-shielding fiber fabric according to the present embodiment is used in clothes having air blowing means, when air is sent into the clothes from the air blowing means In addition, air tends to flow out from the surface of the heat-shielding fiber fabric. As a result, the clothes do not inflate sufficiently, the air does not flow sufficiently between the clothes and the body, and the body and the heat-insulating fiber fabric come into contact with each other in many places. may decrease. The lower limit of the air permeability of the heat-insulating fiber fabric is not particularly limited, and may be 0.01 cm ³ /cm ² ·s or less, or may be non-breathable.

(Material weight and thickness of heat-insulating fiber fabric)
The heat-shielding fiber fabric 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, still more preferably 100 g/m ² or less. The basis weight of the heat-shielding fiber fabric is the weight of the heat-shielding fiber fabric per unit area.

When the heat-shielding fiber fabric has a basis weight of 170 g/m ² or less, light clothing can be obtained, and it can give a refreshing feeling to the wearer in a hot environment. When air is introduced into the clothes from a blower or the like, the clothes tend to swell, the effect of reducing heat is easy to obtain, and it is difficult to give the wearer a feeling of weight and tightness. Furthermore, since the clothes are lighter in weight, even if a light and weak fan (blower) is used as a means of blowing air to the clothes, the air introduced into the clothes from the fan (blower) can You can inflate your clothes. Therefore, it is possible to reduce the weight of the clothes, or to increase the usable time by attaching a long-life battery to the clothes. can provide.

Further, the heat-shielding fiber fabric preferably has a basis weight of 25 g/m ² or more. The basis weight of the heat-shielding fiber fabric 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-insulating fiber fabric to 25 g/m ² or more, it is possible to obtain the strength required for working clothes, and the fabric in the vicinity of the joint with the air blowing means is less likely to tear. Furthermore, the air permeability of the heat-shielding fiber fabric is less likely to increase, and when air is introduced into the clothing from a fan (blower) or the like, the clothing easily expands, making it easier to obtain the effect of reducing heat. In addition, even if the heat-shielding fiber fabric satisfies the condition of air permeability, it is likely to have good texture as clothes for summer, the appearance of the fiber fabric side, and the touch.

The thickness of the heat-insulating fiber fabric in the present embodiment is preferably 0.5 mm or less. The thickness of the heat-insulating fiber fabric is more preferably 0.3 mm or less, still more preferably 0.2 mm or less. As for the thickness of the heat-insulating fiber fabric, the thicker the air layer, the more preferable from the viewpoint of heat-shielding properties. Even though it is thin, it has excellent heat-shielding properties, so that it can be used as a material for clothes for summer, and can give the purchaser a thin, light, and refreshing feeling in terms of appearance and touch. The thickness of the heat-insulating fiber fabric is an average value obtained by measuring the thickness of the heat-shielding fiber fabric at any five points with a dial thickness gauge (thickness measuring device) or the like.

Although the lower limit of the thickness of the heat-insulating fiber fabric in this embodiment is not particularly limited, it is about 0.05 mm from the viewpoint of the strength and appearance of the heat-insulating fiber fabric in this embodiment. In addition, from the viewpoint that it can give the purchaser a thin, light, and refreshing feeling in terms of appearance and touch, while having the structure such as breathability in the present embodiment, the heat shielding property The lower limit of the thickness of the fiber fabric is preferably 0.10 mm or more.

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

If the heat shielding property of the heat shielding fiber fabric has a temperature difference of −3° C. or more compared to the unprocessed fabric, it is suitable for clothes obtained by using the heat shielding fiber fabric in this embodiment, especially for air-conditioned clothes having air blowing means. When used, it is possible to give more comfort to the wearer.

The heat shielding property (difference in temperature rise) was measured according to the heat shielding property test conducted by Kaken Test Center (former Japan Chemical Inspection Association). Details will be explained later.

It should be noted that the heat-shielding fiber fabric in the present embodiment may have a synthetic resin film between two fiber fabrics without departing from the gist of the present invention.

The heat-shielding fiber fabric having the above structure has excellent heat-shielding properties, has low breathability, and is light. 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 clothing and the body, exhibiting heat shielding properties against heat such as heat rays from sunlight. In addition, the air sent from the blower can flow smoothly through the clothes, and the air can be discharged from the cuffs, neck area, and the discharge part designed for each clothes, so the moisture caused by the sweat in the clothes, And 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 alleviating the heat of the wearer, it is possible to reduce or eliminate the stress caused by the heat.

[clothes]
Next, the clothing according to this embodiment will be described. The clothing according to the present embodiment is a clothing that uses the heat-shielding fiber fabric according to the above-described embodiment at least in part and has air blowing means.

By using the heat-shielding fiber fabric of the present embodiment in clothes having air blowing means, external air is introduced between the clothes and the body, the introduced air passes through the clothes, and is used around the neck and cuffs. Since it is discharged from the discharge part such as, the air containing heat and moisture inside the clothes and on the surface of the skin is discharged to the outside by the air flow. Thereby, the heat felt by the wearer of the clothes can be reduced. Furthermore, by forming a space between the heat-shielding fiber fabric that constitutes the clothing and the body, the heat-shielding fiber fabric is prevented from coming into close contact with the skin, and the surface temperature of the fiber fabric rises due to heat rays from sunlight. Even when the heat is applied, the influence of the heat can be prevented, so that the heat felt by the wearer can be further reduced.

In addition, since the air permeability of the heat-shielding fiber fabric used in clothing is low, even if a light and weak fan is used as a blowing means, the clothing will be inflated with the air introduced into the clothing from the fan. be able to. Therefore, it is possible to reduce the weight of the clothes, or to increase the usage time by attaching a long-life battery to the clothes for the lighter weight of the clothes, thereby providing more comfortable clothes. can.

The air blower (blower) may be a fan or the like used in known air-conditioned clothes and the like, and is not particularly limited.

In addition, the types of clothes include work clothes, shirts, jackets, raincoats, ponchos, jackets, dresses, windbreakers, vests, shoes, hats, gloves, etc., and are not particularly limited. Also, the sleeves of the clothes may be long sleeves, short sleeves, or the like, and are not particularly limited.

Further, when the heat-shielding fiber fabric is used for clothing, the synthetic resin film surface may be on the body side or the outside.

[Production method]
A method for manufacturing a heat-shielding fiber fabric according to this embodiment will be described below. It should be noted that the heat-shielding fiber fabric according to the present embodiment is not limited to those obtained by the manufacturing method described below. Also, in the following description, a part of the previously described content will be omitted.

First, a fiber cloth is prepared. The fiber fabric used in this embodiment may be colored by original dyeing, dip dyeing, textile printing, or the like. In addition, before forming a synthetic resin film on the fiber fabric, functional finishing such as water repellent finishing, deodorant finishing, antibacterial and deodorizing finishing, antibacterial finishing, water absorbing finishing, moisture absorbing finishing, fireproof finishing, and antistatic finishing is applied. may Moreover, in order to prevent impregnation of the synthetic resin solution and improve heat shielding properties, the fiber fabric may be subjected to calendering or the like.

Next, a synthetic resin solution is applied to at least one side of the fiber cloth to form a synthetic resin film on the fiber cloth, thereby obtaining a heat-shielding fiber cloth. Predetermined amounts of metal particles and/or carbon black are added in advance to the synthetic resin solution to be used. Specifically, as a method of forming a synthetic resin film on a fiber fabric, a knife coater, bar coater, gravure coater, extrusion coater, or printing machine (screen, inkjet, etc.) is used on at least one side of the fiber fabric. A synthetic resin solution in which a synthetic resin is dissolved in a solvent, or a synthetic resin solution that is heated and melted is applied, and if necessary, it is dried or heat-treated at about 80 to 150 ° C., or if necessary, it is cooled 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 fabric using a knife coater, gravure coater, or extrusion coater, immersed in water, etc., and solidified. A method such as a wet method of forming a film (wet coagulation) can be used.

In addition, as another method for forming a synthetic resin film on a fiber fabric, a synthetic resin solution is applied to a release paper or release film using a knife coater, bar coater, gravure coater, or extrusion coater, and if necessary, A synthetic resin film is formed by drying at 80 to 150 ° C., and a hot-melt, moisture-curing, or two-component adhesive is applied to the synthetic resin film using a gravure coater or knife coater. After the adhesive is applied in a shape, a line, or the entire surface, etc., it is dried if necessary, and the fiber fabric is laminated on the adhesive-coated surface, and the fiber fabric and the synthetic resin film are bonded by applying pressure or heat and pressure. Alternatively, a method of forming a synthetic resin film on one side of the fiber fabric may be used.

After forming a synthetic resin film on at least one side of the fiber fabric, it is further subjected to water-repellent finishing, deodorizing finishing, antibacterial deodorizing finishing, bacteriostatic finishing, water absorbing finishing, moisture absorbing finishing, flameproof finishing, antistatic finishing, texture adjusting finishing, etc. may be processed.

Further, a method for producing a heat-shielding fiber fabric having a synthetic resin film (formed by wet coagulation) using a wet method will be described in detail.

At least one side of the fiber fabric is coated with a synthetic resin solution as described above. As the synthetic resin contained in the synthetic resin solution, a synthetic resin that solidifies when immersed in water is used, and a polyurethane resin is preferably used.

Metal particles and/or carbon black are added to the synthetic resin solution used, and if necessary, the above-described spherical particles, pigments, cross-linking agents, ultraviolet absorbers, antioxidants, deodorants, A softening agent such as a texture adjusting agent, a cell adjusting agent, a flame retardant, a dye transfer sublimation inhibitor, and the like may be added and mixed.

A knife coater, a bar coater, a reverse coater, a gravure coater, or the like may be used to apply the synthetic resin solution to the fiber fabric.

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

Further, at this time, a microporous film is formed in the thick part of the synthetic resin film, but a non-porous 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 amount of the synthetic resin solution applied is large in portions such as recesses of the fiber fabric, and the portion where the thickness of the synthetic resin film is thick is slight. The synthetic resin film becomes porous, and the remaining portion where the thickness of the synthetic resin film is thin becomes non-porous, resulting in a mixed non-porous and microporous film. In such a case, the portion where the amount of resin is large and the thickness of the synthetic resin film is large becomes microporous and becomes soft. Furthermore, even in the 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 diameter compared to the thickness of the synthetic resin film, even in a portion where the thickness of the synthetic resin film is thin. is present along the surface of the fiber fabric, a heat-shielding fiber fabric having excellent heat-shielding properties can be obtained.

Next, the fiber fabric coated with the synthetic resin solution immersed in water is washed with hot water at about 20 to 80° C. and washed with water. Thereafter, the fiber fabric 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 fabric.

After that, if necessary, the obtained heat-shielding fiber fabric is subjected to water-repellent finishing, deodorizing finishing, antibacterial deodorizing finishing, bactericidal finishing, water-absorbing finishing, moisture-absorbing finishing, flame-retardant finishing within the scope of the present invention. , antistatic properties, and texture adjustment processing may be performed, and another resin film or other fiber fabric may be applied on the synthetic resin film.

EXAMPLES The present invention will be further described below with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples. In the examples, "parts" means parts by mass, and "%" means % by mass.

The performance of the obtained heat-shielding fiber fabric was measured by the following method.

[A: Heat shielding (difference in temperature rise)]
The measurement was carried out according to the heat shielding property test of the General Incorporated Association Kaken Test Center (former Japan Chemical Inspection Association).

Specifically, first, as test pieces, a processed cloth (heat-shielding fiber fabric in Examples and Comparative Examples) and an unprocessed cloth (fiber fabric colored in the same color as the processed cloth) were prepared. Furthermore, a black drawing paper having the same size as the test piece was prepared. Place the black drawing paper in an environment of 20°C, fix the test piece at a position 5 mm above the black drawing paper so that the synthetic resin film surface faces the black drawing paper, and place the thermocouple sensor at the center of the lower surface of the black drawing paper. attached. The lamp is irradiated from the test piece side (the fiber fabric surface side of the test piece is the irradiated surface), and the temperature of the processed cloth and the unprocessed cloth at intervals of 5 seconds from 10 minutes after the start of lamp irradiation to 15 minutes The average of the differences (temperature difference = temperature of the processed cloth - temperature of the unprocessed cloth) was determined and used as the heat shielding property (difference in temperature rise). The lamp used was a reflamp (eye lamp spot, manufactured by Iwasaki Electric Co., Ltd., PRS 500 W, 100 V), and the distance between the test piece and the lamp was 50 cm. Also, the illuminance was adjusted with a transformer so that the surface of the test piece was 1500 lux.

[B: Thickness]
(Thickness of fiber fabric and heat-shielding fiber fabric)
The thickness of the fiber fabric and heat-shielding fiber fabric is measured by measuring the thickness of the heat-shielding fiber fabric or fiber fabric at any five points with a dial thickness gauge (thickness measuring device, PEACOCK type H, manufactured by Ozaki Seisakusho Co., Ltd.), and the average 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 fabric using a scanning electron microscope (SEMEDX Type H type: Hitachi Science Systems, Ltd.). In the following examples, since the synthetic resin film is thinner than the unevenness 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 three arbitrary locations, and the average value of the thicknesses at arbitrary three locations among thicknesses 1, 2 and 3 was taken as the thickness at each location. Thickness 4 is the average value of thicknesses 1, 2 and 3.

Thickness 1: There are unevenness due to threads at the part where the warp thread of the fiber fabric is on the surface and the part where the weft thread is on the surface, and the maximum and minimum thickness of the synthetic resin film existing on the recessed part due to this thread The thickness was measured, and the sum of the maximum thickness and the minimum thickness divided by 2 was taken as thickness 1.

Thickness 2: In the above-mentioned measurement of thickness 1, the convex portion formed by the yarn includes a plurality of fibers that constitute the yarn that constitutes the convex portion formed by the yarn, and furthermore, on the surface of the fibers located in the outermost layer of the plurality of fibers, adjacent 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 formed by the adjacent fibers was measured and defined as thickness 2 in a cross-sectional photograph taken in the vertical direction of the fiber in the convex portion formed by the thread.

Thickness 3: In the cross-sectional photograph used for the measurement of thickness 2, the minimum thickness of the synthetic resin film formed on the surface of the fiber located in the convex portion formed by adjacent fibers was measured and defined as thickness 3.

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

[C: Metsuke]
A sample of the heat-insulating fiber fabric was cut into 100 cm ² as a measurement sample, and the weight was measured using an electronic balance, converted into mass per 1 m ² , and determined as the basis weight of the heat-shielding fiber fabric.

[D: Washing treatment]
In order to confirm the abrasion resistance of the heat-shielding fiber fabric, it was washed by the following method.

It was washed 20 times according to JIS L0217 103 method. In addition, drying was performed once by hang-drying after 20 washing treatments. A heat insulating property test was performed using the heat insulating fiber fabric after washing and drying as a test piece of the processed cloth in the above [A: heat insulating property (temperature rise difference)].

(Example 1)
In Example 1, the fiber fabric was a polyester plain fabric (warp yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, warp yarn 84 decitex 72 filaments, warp yarn 181 / 2.54 cm, ^A horizontal density of 93 lines/2.54 cm. The fiber fabric in this state was used as an unprocessed fabric in the measurement of the heat shielding properties.

Next, the following synthetic resin solution was applied to one side of the fiber fabric 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 fabric. The deposition amount of the synthetic resin due to the formation of the synthetic resin film was 7 g/m ² .

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

Next, finish setting was performed at 170° C. to obtain a heat shielding fiber fabric. Table 1 shows the performance of the obtained heat-shielding fiber fabric.

In addition, regarding the state of adhesion of the synthetic resin film to the fiber fabric, unevenness is formed at the part where the warp thread of the fiber fabric is exposed and the part where the weft thread is exposed on the surface. The thickness 1 of the existing synthetic resin film was 12 μm. In addition, in the projection made of the yarn at this time, the unevenness is formed by the plurality of fibers constituting the yarn constituting the projection made of the yarn, and the fibers positioned in the outermost layer of the plurality of fibers. The thickness 2 of the synthetic resin film formed on the surface of the fibers located in the recesses of the matching fibers was 5 μm. Furthermore, the thickness 3 of the synthetic resin film formed on the surface of the fiber positioned on the convex portion of the adjacent fibers was 0.8 μm. The average thickness 4 of these thicknesses 1 to 3 was 5.9 μm.

Further, when the surface of the synthetic resin film formed on the obtained heat-shielding fiber cloth was observed with an electron micrograph, the surface of the fiber cloth was covered with the synthetic resin film, but the yarn of the fiber cloth of the synthetic resin film was observed. In the locations located in the convex portions due to , there were locations with holes and locations where fibers constituting the fiber fabric were confirmed. The holes and fibers could not be visually confirmed.

In addition, many of the scale-like aluminum particles in the synthetic resin film were found such that the scale-like surface and the surface of the fiber fabric were positioned substantially parallel to each other. In addition, the yarns constituting the fiber cloth and the spaces between the fibers constituting the yarns were somewhat impregnated with the synthetic resin, but not impregnated with the scale-like aluminum particles. Therefore, most of the scaly aluminum particles are arranged on the surface of the fiber fabric, and are considered to effectively reflect heat rays such as sunlight.

(Example 2)
In Example 2, the fiber fabric was a polyester plain fabric dyed brown (medium color) with a disperse dye (warp yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, warp density 181 / 2.54 cm, weft density 93 book/2.54 cm, basis weight 99 g/m ² ) was treated with a fluorine-based water repellent to make it water repellent, and the same procedure as in Example 1 was performed except that the following synthetic resin solution was used. Then, a heat-shielding fiber fabric was obtained. Table 1 shows the performance of the obtained heat-shielding fiber fabric.

The state of attachment 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 assumed to be carbon black were synthetic resin impregnated in the fiber cloth. It was also present in the resin.

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

(Example 3)
In Example 3, the fiber fabric was a polyester plain fabric dyed brown (medium color) with a disperse dye (warp yarn 84 decitex 72 filaments, weft yarn 84 decitex 72 filaments, warp density 181 / 2.54 cm, weft density 93 strands/2.54 cm, basis weight 99 g/m ² ) was treated in the same manner as in Example 1 except that it was treated with a fluorine-based water repellent agent to give a heat insulating fiber fabric. . Table 1 shows the performance of the obtained heat-shielding fiber fabric.

(Example 4)
In Example 4, a white nylon plain fabric (warp yarn 56 decitex 40 filaments, weft yarn 56 decitex 40 filaments, warp density 186 / 2.54 cm, weft density 106 / 2.54 cm, basis weight 79 g / m ² ) was partially printed with a plant pattern using an acid dye ink using an inkjet printer, and treated with a fluorine-based water repellent to make it water repellent. The fiber fabric in this state was used as an unprocessed fabric in the measurement of the heat shielding properties.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 is applied to one side of the fiber fabric using a knife coater, solidified in water, washed with hot water, washed with water, and dried to form a synthetic resin film. It was formed into a fiber fabric. The deposition amount of the synthetic resin due to the formation of the synthetic resin film was 5 g/m ² .

Next, finish setting was performed at 160° C. to obtain a heat shielding fiber fabric. Table 1 shows the performance of the obtained heat-shielding fiber fabric.

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 difference in unevenness between the part where the warp yarn comes out and the part where the weft yarn comes out on the surface of the fiber fabric is measured. It was smaller than Examples 1, 2 and 3. The arrangement of the scale-like aluminum particles in the synthetic resin film was the same as in Example 1.

(Example 5)
In Example 5, the fiber fabric was a cationic dyeable polyester fiber dyed dark blue (deep color) using a cationic dye and a reactive dye, and a fabric made from wool (weight per unit area: 93 g/m ² . Dotted on one side at intervals of approximately 1 mm. A woven fabric having convex portions in a shape) was treated with a fluorine-based water repellent to make it water repellent. The fiber fabric in this state was used as an unprocessed fabric in the measurement of the heat shielding properties.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 is applied to the surface of the fiber fabric having dotted protrusions using a knife coater, solidified in water, washed with hot water, washed with water, and dried. was performed to form a synthetic resin film. The amount of synthetic resin deposited by forming the synthetic resin film was 10 g/m ² . In addition, the synthetic resin film had holes of about 0.2 to 0.3 mm that could be visually confirmed due to the protrusions on the back surface of the fiber fabric, and were regularly opened at approximately 1 mm intervals over the entire surface.

Next, finish setting was performed at 150° C. to obtain a heat shielding fiber fabric. Table 1 shows the performance of the obtained heat-shielding fiber fabric.

In the measurement of the thickness of the synthetic resin film, the difference in thickness due to the difference in unevenness between the part where the warp yarn comes out on the surface of the fiber fabric and the part where the weft yarn comes out (the difference between the thickness 2 and 3 with respect to the thickness 1, the fiber fabric (Except for the convex portions present in the form of dots with a sense of approximately 1 mm on the surface) were smaller than those of Examples 1, 2 and 3. The arrangement of the scale-like aluminum particles in the synthetic resin film was the same as in Example 1.

(Example 6)
In Example 6, the fiber fabric was dyed dark blue (dark color) using a disperse dye, and a polyester fabric having vertical stripes on the front and back due to ridges (warp yarn 33 decitex 36 filament, weft yarn 56 decitex 72 filament, vertical density 292 Lines/2.54 cm, horizontal density ²⁰⁸ lines/2.54 cm. The fiber fabric in this state was used as an unprocessed fabric in the measurement of the heat shielding properties.

Next, a synthetic resin solution similar to the synthetic resin solution used in Example 1 is applied to one side of the fiber fabric using a knife coater, solidified in water, washed with hot water, washed with water, and dried to form a synthetic resin film. formed. The deposition amount of the synthetic resin due to the formation of the synthetic resin film was 18 g/m ² . In addition, the synthetic resin film had here and there holes with a long diameter of about 0.5 mm that could be visually confirmed on the convex portions of the ridges, possibly due to the influence of unevenness caused by the vertical stripes of the fiber fabric.

Next, finish setting was performed at 170° C. to obtain a heat shielding fiber fabric. Table 1 shows the performance of the obtained heat-shielding fiber fabric.

In the measurement of the thickness of the synthetic resin film, the difference in thickness due to the difference in unevenness between the part where the warp yarn comes out and the part where the weft yarn comes out on the surface of the fiber fabric (difference between thickness 2 and 3 with respect to thickness 1, ridge convexity part) was smaller than in Examples 1, 2 and 3. In addition, as compared with other examples, a large amount of synthetic resin was impregnated into the fiber fabric. The arrangement of the 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 the heat insulating fiber fabric by forming a metal (titanium) film on one side of the fiber fabric by sputtering without forming a synthetic resin film. board. Various properties were measured for the obtained heat-shielding fiber fabric, and the results are shown in Table 1.

(Reference example 1)
In Reference Example 1, in Example 1, a fiber fabric similar to the fiber fabric (a fiber fabric without a synthetic resin film formed) used as an unprocessed fabric for measuring the heat shielding property was calendered. The heat shielding property was measured as a processed cloth (fiber cloth on which no synthetic resin film was formed), and the results are shown in Table 1.

From the above results, the heat-shielding fiber fabric containing aluminum particles and aluminum particles and carbon black in a synthetic resin film in Examples 1 to 6 was calendered with respect to the fiber fabric in Reference Example 1 and protected from sunlight. It was found to have excellent heat shielding properties compared to the fiber fabric with increased heat ray reflectance and the heat shielding fiber fabric in which a metal film was provided on one side of the fiber fabric in Comparative Example 1 by sputtering.

In addition, by comparing Examples 1 and 2, Example 1, which contains a large amount of scale-like aluminum particles in the synthetic resin film, has excellent heat shielding properties compared to those containing scale-like aluminum particles and carbon black particles. was

Moreover, as in Examples 5 and 6, even the heat-shielding fiber fabrics using dark-colored fiber fabrics have excellent heat-shielding properties.

In addition, Example 4, in which the colored portion was smaller than that of the fiber fabric and the colored color was lighter than those of the other Examples (light color), exhibited even better heat shielding properties.

The wear resistance of each film is confirmed for the heat-shielding fiber fabric on which a synthetic resin film containing metal particles is formed (Example 1) and the heat-shielding fiber fabric on which a metal film is formed by sputtering (Comparative Example 1). For this purpose, an abrasion test was conducted according to JIS L0849 Color Fastness Test Method for Friction, Friction Tester Type II (Gakushin-type) method.

Specifically, the synthetic resin film surface or metal film surface of each heat insulating fiber cloth is used as the friction surface, and the white cotton cloth for friction is brought into contact with the friction surface by applying a load of 2 N, and reciprocating friction is performed 100 times. The state of contamination on the white cotton cloth for rubbing after the reciprocating rubbing was observed. In addition, the test result was judged by the grade. The degree of contamination is indicated by a numerical value, with grade 5 having the least staining of the cotton cloth and grade 1 having the most staining of the cotton cloth. That is, when the judgment grade is grade 5, the least amount of metal particles are released from the heat-insulating fiber fabric, and when the judgment grade is grade 1, the number of metal particles is the largest. As the white cotton cloth for friction, cotton cloth in a dry state and a cotton cloth in an approximately 100% wet state by being wetted with water were used.

As a result of the friction test, the heat-shielding fiber fabric obtained in Example 1 had a judgment grade of 3-4 (a judgment grade between 3rd and 4th) in a test using a dry white cotton cloth for friction. , and the judgment grade in the test using a wet white cotton cloth for friction was grade 4-5 (judgment grade between grade 4 and grade 5), so excellent wear resistance in any test showed sex. In particular, in the test using a wet white cotton cloth for friction, even after 100 reciprocating friction tests, the white cotton cloth for friction was hardly soiled, and the metal particles in the synthetic resin film did not come off. Therefore, it was confirmed that the heat-shielding fiber fabric obtained in Example 1 had particularly excellent abrasion resistance. Therefore, the heat-shielding fiber fabric obtained in Example 1 has excellent abrasion resistance even in a wet state due to adhesion of sweat to the heat-shielding fiber fabric and in a wet state during washing treatment, so it is It was confirmed that it is suitable as a material used for

In addition, the heat-shielding fiber fabric obtained in Comparative Example 1 had a grade of 2 in a test using a dry white cotton cloth for rubbing, and a grade of 1 in a test using a wet white cotton cloth for rubbing. -2 grade (judgment grade between grade 1 and grade 2), and the white cotton cloth for rubbing after 100 times of reciprocating rubbing test was stained with a considerably dark color (especially the white cotton cloth for rubbing wet in tests with ). From this, it can be seen that the heat-insulating fiber fabric obtained in Comparative Example 1 was rubbed with the white cotton cloth for friction, and the metal was separated from the metal film on the heat-shielding fiber fabric.

The heat-shielding fiber fabric having a metal film formed by sputtering in this way is vulnerable to friction, and in particular, when the heat-shielding fiber fabric is wet due to adhesion of sweat and in a wet state during washing, It was confirmed that it became weak against abrasion and that improvement is desired as a material for summer use.

In addition, using the heat-shielding fiber fabric obtained in Examples 1 to 6, work clothes with a fan attached were created, and when the work clothes were worn and worked outdoors during the day, the work clothes It swelled well, created a space between the fabric and the body, and air flowed between the work clothes and the body, making it feel cooler than before. In addition, the feeling of wearing the work clothes was light.

Claims (9)

A heat-shielding fiber fabric having a synthetic resin film formed on at least one side of the fiber fabric,
The synthetic resin film contains at least metal particles ,
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 method ,
The heat-shielding fiber fabric is a heat-shielding fiber fabric used for at least a part of clothing having air blowing means,
Heat-insulating fiber fabric. 2. The heat shielding fiber fabric according to claim 1, wherein the metal particles are aluminum particles. 3. The heat-shielding fiber fabric according to claim 1, wherein the metal particles are scaly. The heat shielding fiber fabric according to any one of claims 1 to 3, which has a basis weight of 170 g/m ² or less. The heat shielding fiber fabric according to any one of claims 1 to 4, which has a thickness of 0.5 mm or less. The heat-shielding fiber fabric 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 fabric according to any one of claims 1 to 6, wherein the synthetic resin film has a thickness of 30 µm or less. The heat-shielding fiber fabric according to any one of claims 1 to 7, wherein the amount of synthetic resin that constitutes the synthetic resin film is 1 g/m ² or more and 30 g/m ² or less. A garment using the heat-shielding fiber fabric according to any one of claims 1 to 8 as at least a part thereof, and having air blowing means.