Insulating fabrics and clothing

Abstract

To provide an insulating fabric that can stabilize the temperature inside a garment when used as a cold-weather garment. [Solution] An insulating fabric that is sandwiched between a first surface and a second surface opposite to the first surface, and stabilizes the temperature on the second surface side, comprising: heat-retaining insulating cotton; and an insulating sheet with low thermal conductivity, which is positioned on the second surface side of the insulating cotton.

Description

[Technical Field]

[0001] This invention relates to heat-insulating fabric and cold-weather clothing using heat-insulating fabric. [Background technology]

[0002] In cold seasons and environments, it is common to wear clothing and gloves as cold-weather gear. While animal fur or faux fur is sometimes used for this gear, it can be restrictive and difficult to maintain.

[0003] In recent years, insulating fabrics made by layering multiple materials have been used in winter clothing. These insulating fabrics may include, for example, heat-retaining insulating cotton and an insulating sheet with low thermal conductivity. For example, in the insulating fabric described in Patent Document 1, the insulating cotton is placed on the inside of the garment, above the insulating sheet. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Utility Model Registration No. 3233325 Gazette [Overview of the project] [Problems that the invention aims to solve]

[0005] However, the insulating fabric described in Patent Document 1 may not provide sufficient heat retention. Furthermore, in recent years, mild winters have continued, and there are significant temperature differences between the outdoors and indoors. Therefore, it is important that the temperature inside the winter clothing remains stable even when moving from a cold place to a warm place.

[0006] The present invention aims to provide an insulating fabric that can stabilize the temperature inside a garment when used as a cold-weather garment. [Means for solving the problem]

[0007] To solve the above problems, this invention proposes the following means. A first aspect of the present invention is an insulating fabric that is sandwiched between a first surface and a second surface opposite to the first surface, and stabilizes the temperature on the second surface side, comprising a heat-retaining insulating cotton and an insulating sheet with low thermal conductivity, which is arranged on the second surface side of the insulating cotton. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide an insulating fabric that can stabilize the temperature inside a cold-weather garment when used as such. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing the wear according to the present invention. [Figure 2] This is a schematic diagram of the structure of the heat-insulating fabric according to the present invention. [Figure 3] This figure shows the measurement results of light absorption and heat retention for Example 1 and Comparative Example 1. [Figure 4] This figure shows the measurement results of the light absorption and heat generation properties for Example 2 and Comparative Example 2. [Figure 5] This figure shows the measurement results of the light absorption and heat generation properties for Example 3 and Comparative Example 3. [Figure 6] This figure shows the measurement results for heat retention and moisture retention of Example 4 and Comparative Example 4. [Figure 7] This figure compares the temperature changes of fabric with and without an insulating sheet. [Figure 8] This figure compares the temperature changes of fabric with and without the insulating sheet. [Figure 9] This figure compares humidity changes between fabrics with and without the same insulation sheet. [Figure 10] This figure shows the measurement results of the light absorption and heat retention properties of the same heat-insulating sheet. [Modes for carrying out the invention]

[0010] Hereinafter, the ware according to the embodiment will be described with reference to the drawings. In the following description, the same reference numerals are given to configurations having the same or similar functions. And redundant descriptions of those configurations may be omitted.

[0011] [Ware 100] Referring to FIG. 1, the heat-insulating fabric 10 and the ware 100 according to this embodiment will be described. First, the whole of the ware 100 will be described. However, the ware 100 does not necessarily have all the configurations described below, and some configurations may be appropriately omitted.

[0012] FIG. 1 is a perspective view showing the ware 100. The ware 100 is a ware formed including the heat-insulating fabric 10. The ware 100 is provided with, for example, a kimono-type hood that can block cold air entering from the collar part into the interior. The ware 100 is provided with, for example, a water-stop zipper in order to enhance waterproofness. The ware 100 is equipped with, for example, a thermometer on the inside. The ware 100 has, for example, six pockets and can store things sufficiently. The ware 100 is provided with, for example, a retroreflective sheet on the sleeve part, ensuring safety when worn in a dark place.

[0013] [Heat-insulating fabric 10] FIG. 2 is a schematic structural diagram of the heat-insulating fabric 10. The heat-insulating fabric 10 is sandwiched between a front surface (first surface) M1 and a back surface (second surface) M2 on the opposite side of the front surface M1. The heat-insulating fabric 10 is a fabric that stabilizes the temperature on the inner side A2.

[0014] Here, when viewed from the heat-insulating fabric 10, the front surface M1 side is taken as the outer side (first surface side) A1, and the back surface M2 side is taken as the inner side (second surface side) A2.

[0015] The insulating fabric 10 is a fabric formed by layering multiple materials. As shown in Figure 2, the insulating fabric 10 comprises a breathable fabric 1 that has moisture permeability, an insulating cotton 2 that has heat retention properties, an insulating sheet 3 with low thermal conductivity, and a lining 4.

[0016] In this embodiment, the insulating fabric 10 is used in the garment 100. However, the cold-weather gear formed by the insulating fabric 10 is not limited to the garment 100. For example, gloves or pants may be formed using the insulating fabric 10. Furthermore, the insulating fabric 10 may be used for things other than cold-weather gear, such as tents or mats.

[0017] The breathable fabric 1 is formed by including a material that has breathability. The breathable fabric 1 is formed by including a material that has water resistance. The breathable fabric 1 is a component that forms the surface M1.

[0018] The moisture permeability of breathable fabric 1 is 10,000 g / m². 2 • A breathability of 24 hours or more is desirable. The breathability of breathable fabric 1 is 20,000 g / m². 2 • A breathability of 24 hours or more is even more desirable. The breathability of breathable fabric 1 is 30,000 g / m². 2 • More preferably 24 hours or longer. In this embodiment, the moisture permeability of the breathable fabric 1 is approximately 30,000 g / m². 2 • 24 hours. Note that the material of the breathable fabric 1 is not limited.

[0019] The water pressure resistance of the breathable fabric 1 is preferably 10,000 mmH2O or higher. It is even more desirable that the water pressure resistance of the breathable fabric 1 be 15,000 mmH2O or higher. In this embodiment, the water pressure resistance of the breathable fabric 1 is 15,000 mmH2O. The material of the breathable fabric 1 is not limited.

[0020] The insulating cotton 2 is formed by including a material that has heat-retaining properties. The insulating cotton 2 is placed inside the breathable fabric 1, on side A2.

[0021] The insulating cotton 2 is a component that can generate heat by absorbing light. The insulating cotton 2 is, for example, a component that absorbs light from the outside, stores energy in its fibers, and emits thermal energy. The insulating cotton 2 is formed by including, for example, polyester and a heat-generating material such as ceramic. It is desirable that the insulating cotton 2 can generate heat of 20 degrees or more. It is even more desirable that the insulating cotton 2 can generate heat of 30 degrees or more. In this embodiment, the insulating cotton 2 can generate heat of 30 degrees or more. In this embodiment, the insulating cotton 2 is breathable. The material of the insulating cotton 2 is not limited.

[0022] The insulation sheet 3 is formed by including a material with low thermal conductivity. The insulation sheet 3 is placed inside A2, relative to the insulation cotton 2.

[0023] The heat insulating sheet 3 is formed by incorporating air bubbles. The heat insulating sheet 3 is composed of a combination of a framework formed by polyester, for example, and particles formed in the cavities. It is even more desirable that the heat insulating sheet 3 is formed by more than 90 percent air bubbles. It is even more desirable that the heat insulating sheet 3 is formed by more than 95 percent air bubbles. Because the heat insulating sheet 3 is formed by incorporating air bubbles, it has high heat insulating properties. In this embodiment, more than 95 percent of the heat insulating sheet 3 is formed by air bubbles. In this embodiment, the heat insulating sheet 3 is permeable to moisture. The material of the heat insulating sheet 3 is not limited.

[0024] The lining 4 is a component that forms the back surface M2. The lining 4 is positioned inside the insulation sheet 3 at A2. The lining 4 is formed by including, for example, a material that feels good to the touch.

[0025] The layer formed by the insulating cotton 2 and the insulating sheet 3 within the insulating fabric 10 is referred to as the insulating layer 5. In the insulating layer 5, the insulating cotton 2 is positioned outside A1 of the insulating sheet 3. Because the insulating cotton 2 is positioned outside A1 of the insulating sheet 3, cold air moving from outside A1 to inside A2 relative to the insulating fabric 10 collides with the insulating cotton 2 before colliding with the insulating sheet 3. As the cold air collides with the insulating cotton 2, the cold air is warmed by the insulating cotton 2. Furthermore, because the insulating sheet 3 is positioned inside A2 of the insulating cotton 2, the remaining cold air is prevented from passing through to A2 inside the insulating sheet 3, thus preventing the space inside A2 of the insulating fabric 10 from becoming cold.

[0026] Garment 100 is formed including an insulating fabric 10. Therefore, garment 100 has insulating properties, and the internal temperature is kept comfortable. Because an insulating layer 5 is formed in garment 100, the internal temperature of garment 100 is stable. Garment 100 can maintain a stable internal temperature even if the external temperature changes. Therefore, even if a user wears garment 100 in an environment such as a mild winter or when there is a temperature difference between indoors and outdoors, the internal temperature will remain stable, making it less susceptible to the effects of external temperature changes.

[0027] Wear 100 has an insulating layer 5, making it less susceptible to the effects of cold air from the outside. Because the insulating layer 5 prevents cold air from entering the interior, the inside of Wear 100 is less likely to be cooled by cold air from the outside. Therefore, the user can stay comfortable even in low-temperature environments by wearing Wear 100.

[0028] Wear 100 is equipped with breathable fabric 1. Therefore, the inside of Wear 100 is kept at a comfortable humidity level. For example, the humidity inside Wear 100 is kept at around 50% RH. Therefore, when the wearer wears Wear 100, they will not feel stuffy.

[0029] According to the heat insulating fabric 10 of this embodiment, since the heat insulating cotton 2 is placed on the outer surface A1 of the heat insulating sheet 3, the cold-weather garment formed by the heat insulating fabric 10 has high heat insulating properties.

[0030] According to the heat-insulating fabric 10 of this embodiment, since it has a breathable fabric 1 that is permeable to moisture, the humidity inside the cold-weather garment formed by the heat-insulating fabric 10 is kept at a comfortable level.

[0031] According to the heat-insulating fabric 10 of this embodiment, the heat-insulating cotton 2 can generate heat by absorbing light, so the cold-weather garment formed by the heat-insulating fabric 10 is less susceptible to the effects of cold air from the outside.

[0032] According to the heat-insulating fabric 10 of this embodiment, the heat-insulating cotton 2 can generate heat of 30 degrees or more by absorbing light, so the cold-weather garment formed by the heat-insulating fabric 10 is less susceptible to the effects of cold air from the outside.

[0033] According to the heat insulating fabric 10 of this embodiment, since the heat insulating sheet 3 is formed containing air bubbles, the cold-weather garment formed by the heat insulating fabric 10 has high heat insulating properties.

[0034] According to the heat insulating fabric 10 of this embodiment, since the heat insulating sheet 3 is formed of more than 95 percent air bubbles, the cold-weather garment formed by the heat insulating fabric 10 has high heat insulating properties.

[0035] According to the heat-insulating fabric 10 of this embodiment, the moisture-permeable fabric 1 has a moisture permeability of 10,000 g / m². 2 Because it lasts for more than 24 hours, the insulation fabric 10 forms the base layer of the cold-weather garment, keeping the internal humidity at a comfortable level.

[0036] According to the heat-insulating fabric 10 of this embodiment, the moisture-permeable fabric 1 has a moisture permeability of 30,000 g / m². 2 Because it lasts for more than 24 hours, the insulation fabric 10 forms the base layer of the cold-weather garment, keeping the internal humidity at a comfortable level.

[0037] According to the garment 100 of this embodiment, since it is formed including the heat insulating fabric 10, it has high heat insulating properties and also maintains a comfortable humidity level inside.

[0038] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are also included within the scope of the gist of the present invention. Furthermore, the components shown in the above embodiments can be combined as appropriate. [Examples]

[0039] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples.

[0040] (Experiment 1) The temperature change on the reverse side of a fabric was measured when light was shone onto the fabric. A thermocouple temperature sensor was placed on the reverse side of a fabric section approximately 15 centimeters square, and the temperature change was measured every minute for 20 minutes when light was shone onto the surface of the fabric. The irradiation distance was 30 centimeters. After irradiating with a reflector lamp for 10 minutes, the lamp's power was immediately turned off, and measurements were taken for another 10 minutes. The measurement environment was set to a temperature of approximately 20 degrees Celsius and a humidity of approximately 65 percent.

[0041] Measurements were performed for Example 1 and Comparative Example 1. Example 1 is an insulating fabric having an insulating sheet 3, which is formed of more than 95 percent air bubbles, and ordinary cotton. In Example 1, the insulating sheet 3 and the ordinary cotton overlap in the direction of light irradiation, and the ordinary cotton is positioned on the light irradiation side of the insulating sheet 3. Comparative Example 1 is an insulating fabric having an insulating sheet 3, which is formed of more than 95 percent air bubbles, and ordinary cotton. In Comparative Example 1, the insulating sheet 3 and the ordinary cotton overlap in the direction of light irradiation, and the insulating sheet 3 is positioned on the light irradiation side of the ordinary cotton.

[0042] Figure 3 shows the measurement results of light absorption and heat retention for Example 1 and Comparative Example 1. As shown in Figure 3, the temperature of Example 1 is higher than the temperature of Comparative Example 1 at each elapsed time. As shown in Figure 3, Example 1 generates more heat than Comparative Example 1. In other words, the insulating fabric 10 in which the insulating cotton 2 is positioned on the light-irradiated side of the insulating sheet 3 generates more heat than the insulating fabric in which the insulating sheet 3 is positioned on the light-irradiated side of the insulating cotton 2.

[0043] (Experiment 2) Next, we measured the temperature change when light was shone onto the fabric. A thermocouple temperature sensor was placed on the back of a fabric sample approximately 15 centimeters square, and the temperature change when light was shone onto the surface of the fabric was measured every minute for 20 minutes. The irradiation distance was 30 centimeters. After irradiating with a reflector lamp for 10 minutes, the lamp's power was immediately turned off, and measurements were taken for another 10 minutes in that state. The measurement environment was set to a temperature of approximately 20 degrees Celsius and a humidity of approximately 65 percent.

[0044] Measurements were performed for Example 2 and Comparative Example 2. Example 2 is an insulating fabric 10 having insulating cotton 2 that can generate heat of 30 degrees or more by absorbing light, and an insulating sheet formed with air bubbles. Comparative Example 2 is an insulating fabric having ordinary cotton and an insulating sheet formed with air bubbles.

[0045] Figure 4 shows the measurement results of light absorption and heat retention for Example 2 and Comparative Example 2. As shown in Figure 4, the temperature of Example 2 is higher than that of Comparative Example 2 at each elapsed time. As shown in Figure 4, Example 2 generates more heat than Comparative Example 2. In other words, the insulating fabric 10, which combines insulating cotton 2 and an insulating sheet that can generate more than 30 degrees by absorbing light, generates more heat than the insulating fabric which combines ordinary cotton and an insulating sheet.

[0046] (Experiment 3) Next, we measured the temperature change when light was shone onto the fabric. A thermocouple temperature sensor was placed on the back of a roughly rectangular piece of fabric measuring approximately 14 cm x 15 cm, and the temperature change when light was shone onto the surface of the fabric was measured every minute for 15 minutes. The irradiation distance was set to 30 cm. The measurement environment was set to a temperature of approximately 20 degrees Celsius and a humidity of approximately 65 percent.

[0047] Measurements were performed for Example 3 and Comparative Example 3. Example 3 is an insulating fabric 10 having insulating cotton 2 that can generate heat of 30 degrees or more by absorbing light, and insulating sheet 3 that is formed of more than 95 percent air bubbles. Comparative Example 3 is an insulating fabric having ordinary cotton and insulating sheet 3 that has insulating properties.

[0048] Figure 5 shows the measurement results of light absorption and heat retention for Example 3 and Comparative Example 3. As shown in Figure 5, the temperature of Example 3 is higher than that of Comparative Example 3 at each elapsed time. As shown in Figure 5, Example 3 generates more heat than Comparative Example 3. In other words, the insulating fabric 10, which combines insulating cotton 2 that can generate more than 30 degrees by absorbing light and insulating sheet 3 that is formed of more than 95 percent air bubbles, generates more heat than the insulating fabric which combines ordinary cotton and insulating sheet 3.

[0049] (Experiment 4) Next, we measured the temperature and humidity changes when cold air was blown onto the fabric. We measured the temperature and humidity changes on the underside of the fabric when cold air at -22 degrees Celsius was blown onto the surface of the fabric for 3 minutes. Furthermore, we measured the temperature and humidity changes on the underside of the fabric when cold air at -22 degrees Celsius was blown onto the surface of the fabric for 5 minutes.

[0050] Measurements were performed for Example 4 and Comparative Example 4. Example 4 had a moisture permeability of 30,000 g / m². 2·A moisture-permeable fabric 1 with a moisture permeability of 24 hours or more, a heat-insulating cotton 2 capable of generating heat of 30 degrees or more by absorbing light, and a heat-insulating sheet 3 in which 95% or more is formed by air bubbles.

[0051] Figure 6 is a diagram showing the measurement results of the heat retention and moisture retention of Example 4 and Comparative Example 4. According to the results shown in Figure 6, when the cold air is blown for 3 minutes, the temperature change of Example 4 is smaller than that of Comparative Example 4. According to the results shown in Figure 6, when the cold air is blown for 5 minutes, the temperature change of Example 4 is smaller than that of Comparative Example 4. According to the results shown in Figure 6, Example 3 has better heat retention than Comparative Example 3. That is, the moisture permeability is 30000 g / m 2 ·The heat-insulating fabric 10 combined with the moisture-permeable fabric 1 with a moisture permeability of 24 hours or more, the heat-insulating cotton 2 capable of generating heat of 30 degrees or more by absorbing light, and the heat-insulating sheet 3 in which 95% or more is formed by air bubbles has better heat retention than the heat-insulating fabric combined with the moisture-permeable fabric with low moisture permeability, ordinary cotton, and the heat-insulating sheet 3 having heat insulation properties.

[0052] According to the results shown in Figure 6, when the cold air is blown for 5 minutes, the humidity change of Example 4 is smaller than that of Comparative Example 4. According to the results shown in Figure 6, Example 4 has better moisture retention than Comparative Example 4. That is, the moisture permeability is 30000 g / m 2 ·The heat-insulating fabric 10 combined with the moisture-permeable fabric 1 with a moisture permeability of 24 hours or more, the heat-insulating cotton 2 capable of generating heat of 30 degrees or more by absorbing light, and the heat-insulating sheet 3 in which 95% or more is formed by air bubbles has more comfortable moisture retention than the heat-insulating fabric combined with the moisture-permeable fabric with low moisture permeability, ordinary cotton, and the heat-insulating sheet 3 having heat insulation properties.

[0053] The test results of the materials for the heat-insulating fabric 10 are shown below.

[0054] (Experiment 5) Next, the heat retention properties of the fabric were measured. A polystyrene foam box with an opening was set up, the sample was attached to the opening of the polystyrene foam box, and after warming the inside of the polystyrene foam box, the temperature change between the inside and outside of the polystyrene foam box was measured. The measurement was performed using a piece of fabric formed to be approximately 20 centimeters square. After warming the inside of the polystyrene foam box to approximately 36 degrees Celsius, the temperature change between the inside and outside of the polystyrene foam box was measured every minute for 60 minutes. The measurement environment was set to a temperature of approximately 5 degrees Celsius. Thermocouple temperature sensors were attached to the inside and outside of the polystyrene foam box, separated by the fabric.

[0055] Measurements were taken for insulation fabric A and insulation fabric B. Insulation fabric A is an insulation fabric that has an insulation sheet 3 in which more than 95 percent is formed by air bubbles. Insulation fabric B is an insulation fabric that does not have an insulation sheet 3 in which more than 95 percent is formed by air bubbles.

[0056] Figure 7 shows a comparison of temperature changes between fabric with and without the heat-insulating sheet 3. As shown in Figure 7, at each elapsed time, the temperature difference between the inside and outside of the polystyrene foam box with insulation fabric A attached is greater than the temperature difference between the inside and outside of the polystyrene foam box with insulation fabric B attached. As shown in Figure 7, insulation fabric A has better heat retention than insulation fabric B. In other words, insulation fabric with an insulation sheet 3 that is more than 95 percent made up of air bubbles has better heat retention than insulation fabric without an insulation sheet 3 that is more than 95 percent made up of air bubbles.

[0057] (Experiment 6) Next, temperature and humidity changes were measured for several insulating fabrics. A thermal mannequin, wearing the fabric to be measured over simulated skin, was placed in a seated position and operated at a temperature of 34 degrees Celsius and a sweat rate of 15 mL / h until stable. The prepared thermal mannequin was then moved to an environment with a room temperature of 5 degrees Celsius and left there for one hour. During this time, the surface temperature of the mannequin was recorded every 10 minutes. The humidity inside the fabric was also recorded every 10 minutes. The temperature and humidity changes inside the fabric were measured using temperature and humidity sensors installed inside the fabric.

[0058] Measurements were taken for insulating fabrics C, D, E, F, G, and H. Insulating fabric C and insulating fabric D are fabrics containing 40 grams of insulating cotton. Insulating fabric C is an insulating fabric that further has an insulating sheet 3 which is formed of more than 95 percent air bubbles. Insulating fabric D is an insulating fabric that does not have an insulating sheet 3 which is formed of more than 95 percent air bubbles. Insulating fabrics E and F are fabrics containing 80 grams of insulating cotton. Insulating fabric E is an insulating fabric that further has an insulating sheet 3 which is formed of more than 95 percent air bubbles. Insulating fabric F is an insulating fabric that does not have an insulating sheet 3 which is formed of more than 95 percent air bubbles. Insulating fabrics G and H are fabrics containing 200 grams of insulating cotton. Insulating fabric G is an insulating fabric that further contains an insulating sheet 3 in which more than 95 percent is formed by air bubbles. Insulating fabric H is an insulating fabric that does not contain an insulating sheet 3 in which more than 95 percent is formed by air bubbles.

[0059] Figure 8 shows a comparison of temperature changes between fabric with and without the heat-insulating sheet 3. According to the results shown in Figure 8, at each elapsed time, the internal temperature of insulating fabric C is higher than the internal temperature of insulating fabric D. According to the results shown in Figure 8, insulating fabric C has better heat retention than insulating fabric D. According to the results shown in Figure 8, at each elapsed time, the internal temperature of insulating fabric E is higher than the internal temperature of insulating fabric F. According to the results shown in Figure 8, at each elapsed time, the internal temperature of insulating fabric G is higher than the internal temperature of insulating fabric H. According to the results shown in Figure 8, insulating fabric G has better heat retention than insulating fabric H. According to the results shown in Figure 8, insulating fabric having an insulating sheet 3 in which 95 percent or more is formed by air bubbles has better heat retention than insulating fabric without an insulating sheet 3 in which 95 percent or more is formed by air bubbles.

[0060] Figure 9 shows a comparison of humidity changes between fabric with and without the insulation sheet 3. According to the results shown in Figure 9, at each elapsed time, the humidity inside insulation fabric C is lower than the humidity inside insulation fabric D. According to the results shown in Figure 9, insulation fabric C is more breathable than insulation fabric D. According to the results shown in Figure 9, at each elapsed time, the humidity inside insulation fabric E is lower than the humidity inside insulation fabric F. According to the results shown in Figure 9, insulation fabric E is more breathable than insulation fabric F. According to the results shown in Figure 9, at each elapsed time, the humidity inside insulation fabric G is lower than the humidity inside insulation fabric H. According to the results shown in Figure 9, insulation fabric G is more breathable than insulation fabric H. According to the results shown in Figure 9, insulation fabric with an insulation sheet 3 that is 95 percent or more made up of air bubbles is more breathable than insulation fabric without an insulation sheet 3 that is 95 percent or more made up of air bubbles, quickly reaches a humidity level that is comfortable for the user, and can maintain a comfortable humidity level for humans even after 60 minutes.

[0061] (Experiment 7) Next, we measured the temperature change when light was shone onto the fabric. A thermocouple temperature sensor was placed on the back of a fabric sample approximately 15 centimeters square, and the temperature change when light was shone onto the surface of the fabric was measured every minute for 20 minutes. The irradiation distance was 30 centimeters. After irradiating with a reflector lamp for 10 minutes, the lamp's power was immediately turned off, and measurements were taken for another 10 minutes in that state. The measurement environment was set to a temperature of approximately 20 degrees Celsius and a humidity of approximately 65 percent.

[0062] Measurements were taken for insulation sheets I and J. Insulation sheet I is an insulation sheet 3 in which more than 95 percent is formed by air bubbles. Insulation sheet J is an insulation sheet formed by including polyester taffeta.

[0063] Figure 10 shows the measurement results of the light absorption and heat retention properties of the heat-insulating sheet. According to the results shown in Figure 10, at each elapsed time, the temperature of insulation sheet I is higher than the temperature of insulation sheet J. According to the results shown in Figure 10, insulation sheet I has better heat retention than insulation sheet J. In other words, insulation sheet 3, which is formed by more than 95 percent air bubbles, has better heat retention than insulation sheet which is formed by including polyester taffeta. [Explanation of Symbols]

[0064] 100...wear, 10...insulating fabric, 1...breathable fabric, 2...insulating cotton, 3...insulating sheet, 4...lining, 5...insulating layer, M1...surface (first side), M2...back (second side), A1...outside (first side), A2...inside (second side)

Claims

1. An insulating fabric sandwiched between a first surface and a second surface opposite to the first surface, which stabilizes the temperature on the second surface side, Insulating cotton with heat retention properties, A thermal insulation sheet with low thermal conductivity is placed on the second surface side of the aforementioned thermal insulation cotton, Equipped with, Insulating fabric.

2. The first surface side of the aforementioned insulating cotton is provided with a breathable fabric that has breathability, The heat insulating fabric according to claim 1.

3. The aforementioned insulating cotton can generate heat by absorbing light. The heat insulating fabric according to claim 1 or claim 2.

4. The aforementioned insulating cotton can generate heat of 30 degrees or more by absorbing light. The heat insulating fabric according to claim 3.

5. The aforementioned heat insulating sheet is formed containing air bubbles, The heat insulating fabric according to claim 1 or claim 2.

6. The aforementioned heat insulating sheet is formed by more than 95 percent air bubbles. The heat insulating fabric according to claim 5.

7. The aforementioned breathable fabric has a moisture permeability of 10,000 g / m². ２ ・It is 24 hours or longer. The heat insulating fabric according to claim 2.

8. The aforementioned breathable fabric has a moisture permeability of 30,000 g / m². ２ ・It is 24 hours or longer. The heat insulating fabric according to claim 7.

9. Formed comprising the heat insulating fabric according to claim 1 or claim 2, Clothing.

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