Mat

Abstract

To provide a mat for continuously functioning a contact cold feeling.SOLUTION: This mat is provided with a surface layer part and a back layer part, and an air passage is formed between the surface layer part and the back layer part by knitting a connecting yarn so as to come and go between the surface layer part constituted of a surface fabric in which a contact cold feeling fiber is knitted in a mesh shape and the back layer part constituted of a back fabric in which a synthetic fiber is knitted in a mesh shape. The rear layer part is divided into a strip shape with one direction of the mat as a longitudinal direction, and a floor surface side is covered with a heat conductive material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mat. [Background technology]

[0002] A three-layer cooling device is known that is made up of a cooling fabric that can be brought into contact with an object and absorb heat from the object, a highly absorbent material that can retain moisture to transfer the heat absorbed by the cooling fabric, and an evaporative heat diffusion material that has an air layer and openings that diffuse the heat of evaporation from the highly absorbent material (Patent Document 1).

[0003] A cooling fabric having a fabric made of woven or nonwoven fabric and a cooling material layer disposed on one or both sides of the fabric, wherein the cooling material layer contains a contact cooling material and an organic binder, the contact cooling material containing at least one selected from water-absorbent resin, gel-like substance, silicone resin, thermally conductive inorganic compound, silicone oil, menthol, xylitol, and silk protein, and the organic binder containing at least one selected from acrylic resin, polyurethane resin, and silicone resin, is also known (Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-78251 [Patent Document 2] Japanese Patent Publication No. 2022-146173 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention provides a mat that provides a sustained cool or warm feeling to the touch. [Means for solving the problem]

[0006] In order to solve the above problem, the mat according to claim 1 is A mat having a surface layer and a back layer, The surface layer is made of a surface fabric in which cool-to-touch fibers are knitted in a mesh pattern, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. It is characterized by:

[0007] The invention described in claim 2 is the mat described in claim 1, The back layer portion is divided into strips with one direction of the mat as the longitudinal direction. It is characterized by:

[0008] The invention described in claim 3 is the mat described in claim 1 or 2, The connecting yarn includes a thermally conductive fiber. It is characterized by:

[0009] The invention described in claim 4 is the mat described in claim 3, The surface layer portion or the back layer portion, or the surface layer portion and the back layer portion, are partly or entirely made of the thermally conductive fiber. It is characterized by:

[0010] The invention described in claim 5 is the mat described in claim 1 or 2, A blower means for circulating air is connected to the air flow path. It is characterized by:

[0011] The invention described in claim 6 is the mat described in claim 1 or 2, The bottom surface side of the back layer is covered with a thermally conductive material. It is characterized by:

[0012] In order to solve the above problem, the mat according to claim 7 is A mat having a surface layer and a back layer, The surface layer is made of a surface fabric knitted with heat storage fibers, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. It is characterized by:

[0013] The invention described in claim 8 is the mat described in claim 7, The heat storage fibers are woven into the outer fabric at a density that suppresses the flow of air from the air passage. It is characterized by:

[0014] The invention described in claim 9 is the mat described in claim 7 or 8, The back layer portion is covered with a heat insulating sheet on the floor surface side. It is characterized by: [Effects of the Invention]

[0015] According to the invention described in claim 1, the cool feeling to the touch can be maintained continuously.

[0016] According to the invention as set forth in claim 2, heat within the mat can be easily dissipated to the outside, and the mat can be easily folded.

[0017] According to the invention as set forth in claim 3, heat from the surface layer portion can be conducted to the back layer portion.

[0018] According to the fourth aspect of the invention, the heat of the surface layer can be more effectively conducted to the back layer.

[0019] According to the invention as set forth in claim 5, the surface layer can be cooled efficiently.

[0020] According to the sixth aspect of the invention, heat from the surface layer can be released to the floor side.

[0021] According to the seventh aspect of the invention, the sensation of warmth to the touch can be maintained continuously.

[0022] According to the invention as set forth in claim 8, air is less likely to escape to the outside from the air passage.

[0023] According to the invention as set forth in claim 9, the air layer in the intermediate layer can be kept warm. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a perspective view showing the overall configuration of a mat according to a first embodiment. [Figure 2] 1 is a cross-sectional view showing a configuration of a mat according to a first embodiment. FIG. [Figure 3] FIG. 10 is a cross-sectional view showing the configuration of a mat having a modified back layer portion. [Figure 4] 10(a) is a schematic plan view showing a mat according to a modified example, and FIG. 10(b) is a schematic cross-sectional view. [Figure 5] FIG. 1 is a schematic diagram illustrating a double Russell machine. [Figure 6] FIG. 10 is a perspective view showing the overall configuration of a mat according to a second embodiment. [Figure 7] FIG. 4 is a cross-sectional view showing the configuration of a mat according to a second embodiment. [Figure 8] FIG. 10 is a cross-sectional view showing the configuration of a mat according to a second embodiment, which includes a modified back layer portion. DETAILED DESCRIPTION OF THE INVENTION

[0025] Next, the present invention will be described in more detail below with reference to the drawings, showing embodiments and specific examples, but the present invention is not limited to these embodiments and specific examples. Furthermore, in the following explanation using the drawings, it should be noted that the drawings are schematic and the ratios of the dimensions, etc. may differ from those of the actual product, and in order to facilitate understanding, illustrations of components other than those necessary for the explanation have been omitted as appropriate.

[0026] "First embodiment" (1) Mat composition FIG. 1 is a perspective view showing the overall configuration of a mat 1 according to this embodiment, and FIG. 2 is a cross-sectional view showing the configuration of the mat 1. As shown in FIG. The structure and function of the mat 1 will be described below with reference to the drawings.

[0027] As shown in Fig. 1, the mat 1 comprises a surface layer 10, an intermediate layer 20, and a back layer 30. The intermediate layer 20 forms an air passage 22 between the surface layer 10 and the back layer 30, giving the mat 1 cushioning properties and breathability, thereby allowing the mat 1 to maintain a cool-to-the-touch feel.

[0028] (1.1) Surface layer The surface layer 10 is made of a surface fabric in which cool-to-touch fibers 11 are knitted in a mesh pattern. The cool-to-the-touch fiber 11 used to knit the outer fabric that constitutes the surface layer 10 of this embodiment is made of polymers such as polyethylene, polyester, and polyamide. Cool-to-the-touch fiber is a fiber that feels cool to the touch and has characteristics such as a high moisture content, high thermal conductivity and thermal diffusivity, and a slightly hard feel when touched. Heat is instantly transferred from the contact body (e.g., human skin, animal skin) to the fiber, causing the fiber to feel cool. The amount of heat transferred is expressed as the cool / humidity feeling evaluation value q-max (W / cm 2 ) and is quantified as 0.2W / cm 2 This is considered to be the standard for how cold it feels.

[0029] Examples of such cool-to-the-touch fibers include ultra-high molecular weight polyethylene fibers with excellent thermal conductivity that easily diffuse heat (IZANAS: a registered trademark of Toyobo Co., Ltd.), fibers that use a hydrophilic ethylene-vinyl alcohol copolymer as the sheath and a hydrophobic polyester as the core (SOPHISTA: a registered trademark of Kuraray Trading Co., Ltd.), polyamide fibers that have enhanced moisture absorption and quick-drying properties due to capillary action that occurs in gaps of several to tens of micrometers formed by randomly arranging short fibers with irregular cross sections and round cross sections that have fine grooves (SPRINGY: a registered trademark of Toray), and POM fibers made by melt-spinning polyoxymethylene resin. In this embodiment, the outer fabric is knitted using polyamide fiber (Springy: a registered trademark of Toray) formed to have a fineness of 33T (decitex) / 26F (filament) x 2 as the cool-to-touch fiber 11. This makes it soft and smooth to the touch, and also provides a cool, cooling effect.

[0030] As the knitting form of the outer fabric, any type of structure can be applied, including weft knitting such as circular knitting, flat knitting, and tuck knitting, and warp knitting such as raschel knitting and tricot knitting. Furthermore, the outer fabric is preferably knitted with a structure having mesh-like or net-like openings in the ground structure, so that the outer layer 10 is the side that comes into contact with the contact body (human skin, animal skin), and in order to improve heat dissipation from the intermediate layer 20. In the case of knitted fabrics, if the number of needle loops forming the openings in the knitted fabric is small, the heat dissipation properties will be improved but it will be difficult to achieve a cool feeling to the touch, and if the number of needle loops is large, the texture will be hard and the heat dissipation properties will also be reduced, so it is preferable to select the number of needle loops taking into consideration the cool feeling to the touch and heat dissipation properties.

[0031] (1.2) Middle class The intermediate layer 20 is double raschel knitted by passing a connecting yarn 21 back and forth between the surface layer 10 and the back layer 30, and an air passage 22 is formed between the surface layer 10 and the back layer 30. The connecting thread 21 may be a monofilament thread or a multifilament thread, but it is preferable to use a monofilament thread in order to keep the compressive modulus of the surface layer 10 within an appropriate range and to improve the compressive recovery.

[0032] The fiber material used for the connecting threads 21 can be any fiber material, such as polyethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fiber, polypropylene fiber, polyvinyl chloride fiber, or polyester-based elastomer fiber. Among these, polyamide fiber is preferred because it has excellent abrasion resistance (resistant to friction), low water absorption so it dries quickly even when wet (easy to wash), and does not shrink or lose its shape due to water. The cross-sectional shape of the fiber may be polygonal (e.g., round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, octapous, flat, dogbone, or other), multi-lobed, hollow, or irregular, but a round cross-section is preferred to improve the durability of the cushioning properties of the mat.

[0033] When monofilament yarn is used as the connecting yarn 21, any fineness can be used, but in order to obtain a soft and elastic feel as a mat, a fineness of 90 to 500T (decitex) is preferred, and more preferably 90 to 300T (decitex).

[0034] (Variation) The connecting yarns 21 may contain thermally conductive fibers that have higher thermal conductivity than polyamide fibers. Thermally conductive fibers are fibers with excellent thermal conductivity, and specifically, the thermal conductivity of the fibers is preferably 0.1 W / (m·K) or higher. Examples of thermally conductive fibers include metal fibers such as copper fibers and aluminum fibers, carbon fibers, polymer fibers containing carbon black or carbon fibers, and resin fibers coated with copper or aluminum. By using a polyamide monofilament yarn as the connecting yarn 21 and mixing it with these thermally conductive fibers, heat from the surface layer 10 can be released to the floor surface, effectively enhancing the cooling effect of the surface layer 10.

[0035] (1.3) Underside The back layer 30 is made of a backing fabric in which synthetic fibers are knitted in a mesh pattern. The synthetic fibers used to knit the backing fabric constituting the back layer 30 of this embodiment are mainly made of synthetic resins with high abrasion resistance, such as polyethylene terephthalate, polypropylene, nylon, polyester, and acrylic. Among these synthetic resin fibers, the cool and moist contact sensation evaluation value q-max (W / cm), which is the maximum value of the heat flow per unit area and is used as an index of cool and moist contact sensation, is used. 2 ) is relatively high in nylon fiber (q-max ~ 0.25 W / cm 2 ) is preferred from the viewpoint of heat dissipation.

[0036] As with the front fabric, the knitting form of the lining fabric can be any type of knitting, including circular knitting, flat knitting, tuck knitting or other weft knitting, and raschel knitting, tricot knitting or other warp knitting. In addition, in order to improve heat dissipation from the mid layer 20, the lining fabric is preferably knitted with a structure having mesh-like or net-like openings in the ground structure. In the case of knitted fabrics, if the number of needle loops forming the openings in the knitted fabric is small, heat dissipation is improved but durability is difficult to obtain, whereas if the number of needle loops is large, durability is improved but heat dissipation is reduced, so it is preferable to select the number of needle loops taking heat dissipation and durability into consideration.

[0037] As shown in Fig. 2, the back layer 30 is divided into strips with the longitudinal direction being in one direction of the mat 1 (see the arrow in Fig. 1). Specifically, the back layer 30 is formed as a divided structure in which strip-shaped block bodies 31, each 10 mm to 20 mm wide, are adjacent to each other, and these strip-shaped block bodies 31 are connected to the surface layer 10. Slit-shaped gaps S are formed between the plurality of rectangular block bodies 31. The slit-shaped gaps S are at both end surfaces of the air passages 22 of the intermediate layer 20, and the air inside the intermediate layer 20 is discharged to the outside through the slit-shaped gaps S. The mat 1 is also foldable inward (toward the surface layer 10) by the slit-shaped gaps S.

[0038] (Variation) FIG. 3 is a cross-sectional view showing the structure of a mat 1A having a modified back layer portion 30A. The floor side of the rear layer portion 30A is covered with a heat-conductive sheet 40. The heat-conductive sheet 40 is adhered to the lining of the rear layer portion 30A and is designed to release heat from the surface layer portion 10 to the outside. The thermally conductive sheet 40 preferably has a thermal conductivity of 10 W / mK or more. Examples of such a thermally conductive sheet 40 include a metal plate and a resin containing dispersed thermally conductive fillers such as inorganic fillers. Examples of inorganic fillers include alumina, aluminum nitride, and aluminum hydroxide.

[0039] (Variation) FIG. 4(a) is a schematic plan view showing a mat 1B according to a modified example, and (b) is a schematic cross-sectional view. The mattress 1B according to the modified example is connected to an air blower fan unit 50, which is an example of an air blowing means for circulating air through the air passages 22 formed in the intermediate layer 20. As shown in Fig. 4(a) , the blower fan unit 50 is attached to one end of the rectangular block body 31 of the mat 1B in a plan view. The blower fan unit 50 may have any configuration as long as it includes a fan and a motor for rotating the fan. For example, the blower fan unit 50 may be integrated with wiring that connects to a power supply unit that supplies power to the blower fan unit 50, or may also be integrated with the power supply unit.

[0040] The blower fan unit 50 preferably blows air in a substantially vertical direction (indicated by a thick arrow R2 in FIG. 4(b)) that intersects with the fan axis direction (indicated by a dashed arrow R1 in FIG. 4(b)). By blowing air in a substantially vertical direction that intersects with the fan axis direction, it becomes easy to blow air that has directionality that is substantially parallel to the air passage 22 formed between the surface layer 10 and the back layer 30 of the mat 1A. By blowing air in a direction substantially parallel to the air passage 22, turbulence is less likely to occur within the mat 1B compared to blowing air in a substantially vertical direction relative to the mat 1B, and the surface layer 10 of the mat 1B can be cooled more efficiently.

[0041] (2) Mat manufacturing method FIG. 5 is a schematic diagram illustrating a double Russell machine. The mat 1 according to this embodiment is produced by knitting the surface layer 10, the back layer 30, and the intermediate layer 20 using a double Russell machine.

[0042] Specifically, as shown in Figure 5, for example, polyamide fiber (Springy: a registered trademark of Toray) formed to have a fineness of 33T (decitex) / 26F (filament) x 2, which is the filament for the outer fabric, is passed from the needles of a double Russell machine to guide bars 101 and 102 to knit the outer layer 10. The guide bars 105 and 106 are provided with a filament for the lining fabric, which is a material for evaluating the cool and moist contact sensation q-max (W / cm 2 The back layer 30 is knitted by passing nylon fibers having a relatively high density. The guide bars 103 and 104 are provided with monofilament polyamide fibers, which are filaments for the connecting threads 21, to knit the intermediate layer 20.

[0043] The mat knitted by the double Russell machine is cut to a predetermined size (width x length), and if necessary, a thermally conductive sheet 40 is adhesively fixed to the floor surface side of the back layer 30 (see Figure 3).

[0044] (3) Function of Mat 1 The mat 1 of this embodiment is double raschel knitted, with connecting yarns 21 passing back and forth between a surface layer 10 made of a surface fabric in which cool-to-the-touch fibers 11 are woven in a mesh pattern and a back layer 30 made of a back fabric in which synthetic fibers are woven in a mesh pattern, and an air passage 22 is formed between the surface layer 10 and the back layer 30, providing cushioning and breathability, thereby allowing the surface layer 10 to maintain its cool-to-the-touch function.

[0045] The back layer 30 is configured by connecting a plurality of rectangular block bodies 31 to the surface layer 10, and slit-like gaps S are formed between the plurality of rectangular block bodies 31. This allows air in the middle layer 20 to be discharged to the outside through the slit-like gaps S, making it easier to dissipate heat from within the mat to the outside and facilitating folding of the mat.

[0046] By using a monofilament thread made of polyamide fiber mixed with a thermally conductive fiber having a thermal conductivity of 0.1 W / (m·K) or more as the connecting thread 21, heat from the surface layer 10 can be released to the floor surface, effectively enhancing the cooling effect of the surface layer 10 to the touch.

[0047] The mat 1 is configured to dissipate heat from the surface layer 10 to the outside by covering the floor surface side of the back layer 30 with a heat conductive sheet 40 having a thermal conductivity of 10 W / mK or more.

[0048] By connecting a blower fan unit 50 that circulates air to the air passage 22 formed in the intermediate layer 20, it becomes easy to blow air with directionality in a direction approximately parallel to the air passage 22 formed between the surface layer portion 10 and the back layer portion 30. By blowing air in a direction approximately parallel to the air passage 22, the surface layer portion 10 can be cooled efficiently.

[0049] The first embodiment of the present invention has been described above in detail, but the multiple modifications described in this embodiment can be arbitrarily combined as necessary. Furthermore, although it has been mentioned that the connecting yarns 21 forming the intermediate layer 20 may contain thermally conductive fibers having higher thermal conductivity than polyamide fibers, the surface layer 10 or the back layer 30, or part or all of the surface layer 10 and the back layer 30, may be made of thermally conductive fibers. This can further enhance the cool-to-the-touch effect of the surface layer 10.

[0050] "Second embodiment" (1) Mat composition FIG. 6 is a perspective view showing the overall configuration of a mat 2 according to the second embodiment, and FIG. As shown in Fig. 6, the mat 2 according to the second embodiment includes a surface layer 210, an intermediate layer 220, and a back layer 230. The intermediate layer 220 forms an air passage 222 between the surface layer 210 and the back layer 230, giving the mat 2 cushioning properties and breathability, thereby allowing the mat 2 to provide a sustained warmth to the touch.

[0051] (1.1) Surface layer The surface layer 210 is made of a surface fabric in which heat storage fibers 211 are knitted. The heat storage fiber 211 used to knit the surface fabric that constitutes the surface layer 210 of this embodiment is a fiber with excellent heat storage properties, such as a fiber containing a substance (such as zirconium carbide) that absorbs sunlight and converts it into thermal energy, or a fiber containing carbon.

[0052] Examples of such heat-storing fibers include moisture-absorbing, heat-generating acrylate fibers (Ex: a registered trademark of Toyobo Co., Ltd.), fibers that generate heat called adsorption heat when they absorb surrounding water vapor (Sunburner: a registered trademark of Teijin Limited), fibers that have carbon-based inorganic microparticles kneaded into their molecular structure that can absorb near-infrared rays from sunlight and convert them into heat (Solotex Thermo: a registered trademark of Teijin Limited), and other synthetic fibers such as cupra (Bemberg: a registered trademark of Asahi Kasei Corporation) that has moisture-absorbing and heat-generating properties, and heat-generating fibers (Tencel, Modal: both registered trademarks of Lenzing). In this embodiment, the outer fabric is knitted using polytrimethylene terephthalate fiber (Solotex Thermo: a registered trademark of Teijin Limited) as the heat storage fiber 211. This makes the fabric soft and smooth to the touch and also provides heat storage and heat retention properties.

[0053] Since the surface layer 210 of the surface fabric is the side that comes into contact with a contact body (human skin, animal skin), it is preferable that the surface fabric be knitted with a high density ground weave that reduces gaps between the yarns so that air does not easily escape from the intermediate layer 220 (low breathability). For this reason, the heat storage fiber 211 is preferably a synthetic fiber filament with a single yarn fineness of 1 to 7T (decitex). By making the single yarn fineness 7T (decitex) or less, the resulting surface fabric has small gaps between the single fibers in the fabric, which reduces the amount of air that passes through the intermediate layer 220 (low breathability).

[0054] The total fineness is preferably 400 to 1200T (decitex). By setting the total fineness of the heat storage fibers 211 to 400T (decitex) or more, the strength of the resulting surface fabric is easily maintained. Furthermore, by setting the total fineness of the heat storage fibers 211 to 1200T (decitex) or less, low breathability is easily maintained.

[0055] The woven form of the outer fabric can be any weave, including plain weave, twill weave, satin weave, or derivatives thereof.Similarly, the knitted form can be any weave, including weft knitting such as circular knitting, flat knitting, and tuck knitting, and warp knitting such as raschel knitting and tricot knitting. In particular, woven fabrics can be made into a denser weave than knitted fabrics, and the amount of air passing through the intermediate layer 220 can be suppressed, thereby providing better heat storage and heat retention effects.

[0056] (1.2) Middle class The intermediate layer 220 is double raschel knitted by passing connecting yarns 221 back and forth between the surface layer 210 and the back layer 230, and an air passage 222 is formed between the surface layer 210 and the back layer 230. The connecting thread 221 may be a monofilament thread or a multifilament thread, but it is preferable to use a monofilament thread in order to keep the compressive modulus of the surface layer 210 within an appropriate range and to improve the compressive recovery property.

[0057] The fiber material used for the connecting threads 221 can be any fiber material, such as polyethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fiber, polypropylene fiber, polyvinyl chloride fiber, or polyester-based elastomer fiber. Among these, polyamide fiber is preferred because it has excellent abrasion resistance (resistant to friction), low water absorption, dries quickly even when wet (easy to wash), and does not shrink or lose its shape due to water. The cross-sectional shape of the fiber may be polygonal (e.g., round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, octapous, flat, dogbone, or other shapes, multi-lobed, hollow, or irregular, but a round cross-section is preferred to improve the durability of the cushioning properties of the mat.

[0058] (1.3) Underside The back layer 230 is preferably knitted with a ground weave that is high density and reduces gaps between threads so that air from the intermediate layer 220 does not easily escape (low breathability). As the synthetic fibers used to knit the lining fabric that constitutes the lining layer portion 230 of this embodiment, acrylic fibers and cupra fibers, which have excellent heat storage properties, are mainly used.

[0059] As with the front fabric, the lining fabric may be woven or knitted in any manner, including plain weave, twill weave, satin weave, or derivatives thereof. Similarly, the knitting may be weft knitting such as circular knitting, flat knitting, or tuck knitting, or warp knitting such as raschel knitting or tricot knitting.

[0060] (Variation) FIG. 8 is a cross-sectional view showing the structure of a mat 2A having a modified back layer portion 230B. The floor side of the back layer portion 230B is covered with a heat insulating sheet 240. The heat insulating sheet 240 is adhered to the lining fabric of the back layer portion 230B, and is capable of suppressing heat transfer from the back layer portion 230B and keeping the air layer in the intermediate layer 220 warm. The heat insulating sheet 240 preferably has a thermal conductivity of less than 0.1 W / m·K. Examples of suitable heat insulating sheets 240 include foamed resin sheets, resin sheets containing heat insulating materials, and aluminum vapor deposition films. Resin sheets containing heat insulating materials are particularly preferred because they can reduce thermal conductivity. Foamed sheets are also preferred because they are readily available and inexpensive.

[0061] (2) Function of the mat The mat 2 according to the second embodiment is double raschel knitted by passing connecting yarns 221 back and forth between a surface layer 210 made of a surface fabric woven with a ground weave that uses heat storage fibers 211 to achieve high density and reduce gaps between the threads, and a back layer 230 made of a back fabric woven with a ground weave that uses acrylic fibers or cupra fibers with excellent heat storage properties to achieve high density and reduce gaps between the threads, and an air passage 222 is formed between the surface layer 210 and the back layer 230 to provide cushioning properties and breathability, thereby allowing the surface layer 210 to provide a sustained feeling of warmth to the touch.

[0062] The floor side of the back layer 230 is covered with a heat insulating sheet 240 having a thermal conductivity of less than 0.1 W / m·K, which makes it possible to suppress heat transfer from the back layer 230 and keep the air layer in the middle layer 220 warm.

[0063] (Addendum) This specification discloses at least the following inventions. [1] A mat having a surface layer and a back layer, The surface layer is made of a surface fabric in which cool-to-touch fibers are knitted in a mesh pattern, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. A mat characterized by: [2] The back layer portion is divided into strips with one direction of the mat as the longitudinal direction. 2. The mat according to claim 1 . [3] The connecting yarn includes a thermally conductive fiber. The mat according to [1] or [2], characterized in that [4] The surface layer portion or the back layer portion, or the surface layer portion and the back layer portion, are partly or entirely made of the thermally conductive fiber. The mat according to [3], characterized in that [5] A blower means for circulating air is connected to the air passage. The mat according to any one of [1] to [4], characterized in that [6] The bottom surface side of the back layer is covered with a thermally conductive material. [1] to [5], characterized in that the mat [7] A mat having a surface layer and a back layer, The surface layer is made of a surface fabric knitted with heat storage fibers, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. A mat characterized by: [8] The heat storage fibers are woven into the outer fabric at a density that suppresses the flow of air from the air passage. The mat according to [7], characterized in that [9] The back layer portion is covered with a heat insulating sheet on the floor surface side. The mat according to [7] or [8], characterized in that

[0064] According to the invention described in [1], the cool feeling to the touch can be maintained for a long time. According to the invention described in [2], heat inside the mat can be easily dissipated to the outside, and the mat can be easily folded. According to the invention described in [3], the heat of the surface layer can be conducted to the back layer. According to the invention described in [4], the heat of the surface layer can be more effectively conducted to the back layer. According to the invention described in [5], the surface layer can be cooled efficiently. According to the invention described in [6], the heat from the surface layer can be released to the floor side. According to the invention described in [7], the sensation of warmth to the touch can be maintained continuously. According to the invention described in [8], air is less likely to escape to the outside from the air passage. According to the invention described in [9], the air layer in the intermediate layer can be kept warm. [Explanation of symbols]

[0065] 1, 1A, 1B, 2... Mat 10, 210...surface layer 11....Cooling fiber, 211....Heat storage fiber 20, 220... Middle class 21, 221... Connecting thread 30, 230... Back layer 40. Thermal conductive sheet 50···Blower fan unit 240... Heat insulation sheet

Claims

1. A mat having a surface layer and a back layer, The surface layer is made of a surface fabric in which cool-to-touch fibers are knitted in a mesh pattern, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. A mat characterized by:

2. The back layer portion is divided into strips with one direction of the mat as the longitudinal direction.

2. The mat of claim 1.

3. The connecting yarn includes a thermally conductive fiber.

3. The mat according to claim 1 or 2.

4. The surface layer portion or the back layer portion, or the surface layer portion and the back layer portion, are partly or entirely made of the thermally conductive fiber.

4. The mat according to claim 3.

5. A blower means for circulating air is connected to the air passage.

3. The mat according to claim 1 or 2.

6. The bottom surface side of the back layer is covered with a thermally conductive material.

3. The mat according to claim 1 or 2.

7. A mat having a surface layer and a back layer, The surface layer is made of a surface fabric knitted with heat storage fibers, By knitting the surface layer portion and the back layer portion so that a connecting yarn passes between them, an air passage is formed between the surface layer portion and the back layer portion. A mat characterized by:

8. The heat storage fibers are woven into the outer fabric at a density that suppresses the flow of air from the air passage.

8. The mat according to claim 7.

9. The back layer portion is covered with a heat insulating sheet on the floor surface side.

9. A mat according to claim 7 or 8.

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