JP2010115402A - Cooling or heating structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling or heating structure, used over a long period of time and repeatedly by supplying water. <P>SOLUTION: This cooling or heating structure includes a body part and a lid part. The body part includes a waterproof base part and a water holding body disposed on the base part. The water holding body includes water absorptive polymer and a support for the polymer. The amount of water absorptive polymers is 30-200 g per 1 m<SP>2</SP>of water holding body. The lid part is coupled to one side of the body part or extended from one side, and capable of opening and closing to cover the top face of the body part when being closed, and is waterproof. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a structure including a water retaining body that can retain water, and relates to a structure that is used to cool or warm a human body or an animal after the water retaining body retains water.

  In order to cherish the use of energy resources on the earth, attention has been given to cooling and heating methods that do not use energy or can save energy consumption.

  The present inventor has proposed a cooling or heating sheet in Patent Document 1 in which a hydrogel layer is disposed between non-breathable sheet layers. This sheet can be used as it is or in a refrigerator or freezer to cool a human body or animal, and it can also be used to warm a human body or animal by heating in a microwave oven. be able to.

  Patent Document 2 discloses a pillow in which a concave portion is formed, and a bag-like body filled with a gel-like material is installed and used in the concave portion. Examples of the gel-like material include a mixture of a highly water-absorbent resin and water, a low-elasticity polyurethane foam that absorbs water, and an open-cell polyurethane foam that absorbs water.

  In the gel-like material used in the cooling or heating sheet described in Patent Document 1 and the pillow described in Patent Document 2, since the gel is sealed in the bag, the outside air temperature is high, etc. In some cases, a sufficient cooling effect cannot be obtained. In such a case, since the gel-like material described in Patent Document 2 is small, a cooling effect could be obtained by using it after cooling in a refrigerator in advance. If the cooling or heating sheet is a floor pad or mattress, it cannot be placed in the refrigerator because it is large.

  Moreover, the gel-like thing used in the cooling or heating sheet | seat described in patent document 1, or the pillow described in patent document 2 may burst by vapor pressure, when it heats with a microwave oven.

The inventor has also proposed a cooling structure that is used by injecting water during use in Patent Document 3. The cooling structure includes a bag-shaped covering portion and a water retaining body, and the water retaining body includes a bag body and a water-absorbing material enclosed therein and can be taken in and out of the covering portion. is there. In an example of the cooling structure disclosed in Patent Document 3, at least one surface of the water retaining body bag is made of a moisture permeable / water permeable material, and both surfaces are moisture permeable / water permeable materials. In the case of manufacturing, one surface of the covering portion is water-impermeable. Moreover, when one surface of the bag body of the water retaining body is water-impermeable, one surface of the covering portion may be water-permeable or water-impermeable. The other surface of the covering portion has a moisture permeability of 500 to 3,000 g / m ² · 24 hours as measured by the Lissy method. This cooling structure is used after water is supplied to the water retaining body from its moisture-permeable / water-permeable surface.

  Since the cooling structure described in Patent Document 3 uses heat of vaporization, a sufficient cooling effect is obtained. Further, when the temperature is particularly hot, a larger cooling effect can be obtained by using cooling water as water supplied to the water holding body. However, when manufacturing the cooling structure, it is necessary to appropriately adjust the moisture permeability. Moreover, this cooling structure did not consider that it was used for the purpose of heating. Then, when water was supplied to the water retaining body for use in heating and warmed with a microwave oven, the moisture evaporated from the surface of the moisture retaining and water permeable material made of the water retaining body.

  Furthermore, the structures described in Patent Documents 1 to 3 may cause water separation from the gel-like material when a large body pressure is applied thereto.

WO2007 / 108235 JP 07-163448 A JP2007-289594

  An object of the present invention is a cooling or heating structure capable of controlling the cooling efficiency by utilizing the latent heat of vaporization (heat of vaporization) or injecting cooling water. The object is to provide a structure that can be used repeatedly.

  Another object of the present invention is a cooling or heating structure capable of controlling the heating efficiency by heating with a microwave oven or an electric blanket or by injecting hot water. The object is to provide a structure that can be used repeatedly.

  Still another object of the present invention is to provide a cooling or warming structure that is unlikely to cause water separation from a water retaining body even when body pressure is applied.

  Still another object of the present invention is to provide a cooling or heating structure in which the outer surface of the covering portion is not moistened by moisture derived from the water retaining body.

  The inventor has intensively studied in order to solve the above-described problems, and has completed the present invention.

That is, the present invention is a cooling or warming structure including a main body portion and a lid portion, and the main body portion includes a waterproof bottom surface portion and a water retaining body disposed on the bottom surface portion. The water retaining body includes a water absorbing polymer and a support of the polymer, and the amount of the water absorbing polymer is 30 to 200 g per 1 m ² of the water retaining body, and the lid is bonded to one side of the main body. The present invention relates to a cooling or heating structure that extends from one side, can be opened and closed so as to cover the upper surface of a main body when closed, and is waterproof.

  Based on the water absorption test method of the superabsorbent resin described in JIS K7223 as the water absorbent polymer, provided that the water absorption measured using pure water instead of 0.9% sodium chloride aqueous solution, It is preferable to use one having a weight 50 to 500 times its own weight.

Based on the amount of water-absorbing polymer per 1 m ² of water retaining body (unit: g) and the water-absorbing polymer water-absorbing polymer test method described in JIS K7223, but 0.9% chloride A value obtained by multiplying the amount of water absorption (unit: weight times) measured using pure water instead of the sodium aqueous solution is preferably 7,000 to 100,000.

  The main body portion may further have a waterproof side surface portion.

  In the cooling or warming structure of the present invention, at least a part of the water-absorbent polymer support is connected to the outer peripheral part of the bottom part or the upper end part of the side part and constitutes an inner lid part that does not open and close It may be.

  In the cooling or heating structure of the present invention, the main body may further include an inner lid made of a water-permeable material that is coupled to the outer peripheral part of the bottom part or the upper end part of the side part and does not open and close. .

  The water retaining body may further contain water and / or an antibacterial agent and / or an antifungal agent.

  The antibacterial agent and / or antifungal agent is preferably a silver compound. Alternatively, the antibacterial agent and / or antifungal agent is a triazole antifungal agent, a pyrithione antifungal agent, a benzimidazole antifungal agent, a benzthiazole antifungal agent, an isothiazoline antifungal agent, or a thiabendazole antifungal agent. It is preferably at least one selected from the group consisting of agents.

  At least a part of the water retaining member may be composed of fibers containing a water-absorbing polymer component serving as both the water-absorbing polymer and the support.

  The present invention also relates to a bag-containing cooling or heating structure comprising an openable / closable outer bag and the cooling or heating structure of the present invention housed in the outer bag.

  Furthermore, the present invention provides a water-absorbing polymer, a support for the polymer, and a triazole antifungal agent, a pyrithione antifungal agent, a benzimidazole antifungal agent, a benzthiazole antifungal agent, an isothiazoline antifungal agent, And at least one antifungal agent selected from the group consisting of thiabendazole type antifungal agents, wherein the antifungal agent and water are provided on a polymer support to which a water-absorbing polymer is attached. It is related with the manufacturing method of a water holding body including the process of spraying the liquid substance containing this.

  The liquid material containing an antifungal agent and water may further contain an aqueous binder.

  The present invention provides a cooling or warming structure that can be used repeatedly over a long period of time.

  The cooling structure of the present invention is easy to carry before use because it holds little or no water and thus has a small weight and can be folded.

  By using the cooling or warming structure of the present invention, it is possible to cool in summer and to sleep warmly in winter.

  In the cooling or heating structure of the present invention, an excellent cooling effect can be obtained by heat of vaporization. If cooling water is used, a larger cooling effect can be obtained.

  In the cooling or warming structure of the present invention, the desired warming can be achieved by using warm water at an appropriate temperature or by adjusting the time of warming in a microwave oven performed after supplying water. Can be realized. Further, the coating portion does not burst during heating in the microwave oven.

  In the cooling or warming structure of the present invention, water separation from the water retaining body hardly occurs even when body pressure is applied. Therefore, excellent cushioning properties are expressed by the water retaining body and water.

  In the cooling or warming structure of the present invention, it is possible to retain water only in a part of the water retaining body and corresponding to a portion to be cooled such as a human body. Therefore, it can also be used for cryotherapy in the medical field.

  In the cooling or warming structure of the present invention, in a mode in which the water retaining body contains an antibacterial agent and / or an antifungal agent, germs and wrinkles are hardly generated.

  In the cooling or warming structure of the present invention, the water retaining body is composed of fibers containing a water absorbing polymer component that plays the role of both the water absorbing polymer and its support, or of the water absorbing polymer Especially in the embodiment in which the support is made of a fiber containing a water-absorbing polymer component, the entire water retaining body exhibits a sufficient water retaining ability, so even if body pressure is applied, water does not disperse from the water retaining body, and therefore sufficient Cooling or warming effect and cushioning performance can be obtained.

  Hereinafter, the present invention will be described based on the best mode for carrying out the invention.

  The cooling or heating structure of the present invention can be used as, for example, a bed pad, a futon pad, a pillow pad, a hot pack, a hot water bottle, a rug, a pet rug, and the like.

  Next, the cooling or heating structure of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view showing an example of the cooling or heating structure of the present invention. FIG. 1 (1) shows a state in which the lid part 200 is opened, and FIG. 1 (2) shows a state in which the lid part 200 is closed. FIG. 2 is a cross-sectional view taken along line XX in FIG.

  The cooling or heating structure 1,000 extends from the main body 100 and one side d of the main body 100 and covers the upper surface of the main body 100, more specifically, the upper surface of the water retaining body 50 when closed. And a lid portion 200 that can be opened and closed. The main body portion 100 includes a bottom surface portion 20, a side surface portion 25 extending upward from four sides of the bottom surface portion 20, and a water retaining body 50 disposed on the bottom surface portion 20. The water retaining body 50 includes a water-absorbing polymer 30 and a support 40 for the polymer 30. In this example, the water-absorbing polymer 30 is held on the upper surface of the support 40. The water-absorbing polymer support 40 constituting the water retaining body 50 is fixed to the bottom surface portion 20 with an adhesive.

  FIG. 3 is a schematic perspective view showing another example of the cooling or heating structure of the present invention. FIG. 3A shows a state where the lid 210 is opened, and FIG. 3B shows a state where the lid 210 is closed. FIG. 4 is a cross-sectional view taken along line YY in FIG.

  The cooling or warming structure 1, 100 includes a main body 110 and a lid 210 that is coupled to one side d of the main body 110 and can be opened and closed so as to cover the upper surface of the main body 110 when closed. The main body part 110 includes a bottom surface part 21 and a water retaining body 51 disposed on the bottom surface part 21. The water retaining body 51 is formed by using a water-absorbing polymer 30, a support 40 of the polymer 30, and a fiber containing a water-absorbing polymer component that serves as both the water-absorbing polymer and the support. Is provided with a nonwoven fabric 41. In this example, the water-absorbing polymer 30 is scattered throughout the support 40. Moreover, the nonwoven fabric 41 is combined with the outer peripheral portion of the bottom surface portion 21 to constitute an inner lid portion that does not open and close. That is, the bottom surface portion 21 and the inner lid portion made of the nonwoven fabric 41 constitute a bag body. Since the inner lid portion exists, the support body 40 of the water-absorbing polymer 30 is not fixed to the bottom surface portion 21. However, the support 40 of the water-absorbing polymer 30 may be fixed to the bottom surface portion 21. One end portion 211 of the lid portion 210 is folded, and the end portion 211 is adhered to the upper surface of the main body portion 110, more specifically, the inner lid portion made of the nonwoven fabric 41, with an adhesive. ing. In this way, the lid part 210 is coupled to the main body part 110 at the side d.

  FIG. 5 is a schematic perspective view showing still another example of the cooling or heating structure of the present invention. FIG. 5A shows a state where the lid 220 is opened, and FIG. 5B shows a state where the lid 220 is closed. FIG. 6 is a cross-sectional view taken along line ZZ in FIG.

  The cooling or heating structure 1,200 includes a main body portion 120 and a lid portion 220 that is coupled to one side d of the main body portion 120 and can be opened and closed so as to cover the upper surface of the main body portion 120. The main body 120 is coupled to the bottom surface portion 22, the side surface portion 26 extending upward from the four sides of the bottom surface portion 22, the water retaining body 52 disposed on the bottom surface portion 22, and the upper end portion of the side surface portion 26 so as not to open and close. And a lid 11. The water retaining body 52 includes a water-absorbing polymer 30 and a support 40 for the polymer 30. The bottom surface portion 22, the side surface portion 26, and the inner lid portion 11 constitute a bag body. Since the inner lid portion 11 exists, the support body 40 of the water-absorbing polymer 30 is not fixed to the bottom surface portion 22. However, the support 40 of the water-absorbing polymer 30 may be fixed to the bottom surface portion 22. In this example, the water-absorbing polymer 30 is scattered throughout the support 40. The inner lid portion 11 is made of a water permeable material. In this example, the inner lid portion 11 does not serve as a support for the water-absorbing polymer. However, the inner lid portion 11 may serve as a support for the water-absorbing polymer. Specifically, for example, a mode in which the water-absorbing polymer is attached or held on the surface or inside of the inner lid portion 11 or a water-absorbing polymer that is attached or held on a support of another water-absorbing polymer, The aspect which the intermediate cover part 11 is clamping with the other support body may be sufficient.

  The lid part 220 is bonded to the main body part 120 by an adhesive piece 300 that extends from the upper surface of the lid part 220 to the upper end part of the one side surface part 26d of the main body part 120. In this way, the lid part 220 is coupled to the main body part 120 at the side d. In this example, the lid portion 220 extends from the upper surface lid portion 220m that covers the upper surface of the main body portion 120 and the side b of the upper surface lid portion 220m, and is among the four side surface portions 26a, 26b, 26c, and 26d of the main body portion 120. , And a side cover portion 220s that covers the side surface portion 26b having the side b.

  The lid portion only needs to have a size and shape that can cover the entire top surface of the main body portion. For example, the lid portion may have a shape and size such that its tip is located below the bottom surface portion of the main body portion. .

  In the example shown in FIG. 1 to FIG. 6, the lid is closed only by placing the lid on the upper surface of the main body. The closed state of the lid is not limited to this. You may couple | bond a cover part and a main-body part with a fastener. Specifically, for example, in the examples shown in FIGS. 3 and 4, fasteners may be attached to the sides a, b, and c. In the example shown in FIGS. 5 and 6, a string is fastened to the side cover part 220 s and the side part 26 b or the bottom part 22 of the main body part 120, and these strings are tied, or the side cover part 220 s and the main body part are connected. The side part 26b of 120 may be snapped, or a button hole may be formed in the side cover part 220s, the button may be fastened to the side part 26b of the main body part 120, and the button may be passed through the button hole. This is because even if the lid portion and the main body portion are coupled with such a fastening device, there is a space where water vapor leaks between the lid portion and the main body portion.

  In addition, when using a fastener, it is also possible to use the thing made from a metal preferably using a plastic thing, In that case, the structure for cooling or heating is used for heating. When using with, hot water is supplied or an electric blanket is used, and microwave heating cannot be performed.

  The bottom surface portion and the lid portion of the main body portion are waterproof. Further, when the main body part also has a side part, the side part is also waterproof. "Waterproof" means that the material is waterproof when they are composed of a single material, and at least one layer is waterproof when they are a multilayer structure of two or more layers It means that.

  A preferable example of the waterproof material is a waterproof polymer film. Examples of the raw material polymer for the waterproof polymer film include polyethylene, polypropylene, polyester, polyamide, polyvinyl chloride, polyvinylidene chloride, polyurethane, polystyrene, ethylene-vinyl acetate copolymer, polycarbonate and the like. As the waterproof polymer film, a polyethylene film, a polyethylene terephthalate film, a stretched polypropylene film and an unstretched polypropylene film are preferable. The polymer film may be composed only of a polymer, and various additives such as a stabilizer such as a plasticizer and a heat stabilizer, an antioxidant, a lubricant, a dispersion aid, an ultraviolet absorber, and a surfactant. May be used in combination.

  The thickness of the waterproof polymer film varies depending on the use of the cooling or heating structure of the present invention, the strength of the polymer film, whether or not other materials are used in combination, and is not particularly limited, but is usually 100 μm or less, The thickness is preferably 20 to 90 μm, more preferably 30 to 70 μm, and particularly preferably 40 to 60 μm.

  The waterproof polymer film is not limited to a single layer film, and may be a multilayer film in which layers of different polymers are laminated.

  When the bottom part, side part, or lid part of the main body part is composed of two or more layers, the one used together with the waterproof polymer film, that is, as an example of the material constituting the other layer, metal foil Woven fabric, non-woven fabric and knitted fabric.

  When the waterproof polymer film and the metal foil are used in combination, the material metal is, for example, aluminum, gold, silver, copper, iron, nickel, palladium, platinum, or an alloy thereof. The thickness of the metal foil is not particularly limited, but is preferably about 10 nm to 500 μm. The thickness is selected in consideration of the decrease in flexibility as the metal foil becomes thicker. When a metal foil is used, the coating portion is extremely waterproof.

  Since the metal foil exhibits a remarkably high waterproof property, when the metal foil is used, the polymer film used in combination may not be waterproof. When the polymer film and the metal foil are laminated, the metal foil may constitute the outermost layer, but a three-layer structure in which the metal foil is sandwiched between two polymer films is preferable. Further, in the case of a two-layer structure of one polymer film and one metal foil, it is preferable that the polymer film is located outside the covering portion.

  When a metal foil is used, when the cooling or heating structure is used for heating, hot water is supplied or an electric blanket is used, and microwave heating cannot be performed.

When the waterproof polymer film and the woven fabric are used in combination, the material of the woven fabric is, for example, cotton, rayon, polyester, polypropylene, nylon, acrylic, etc., and the thickness is usually 60 g / m ^{2 to} 150 g / m ² , preferably 80 g / m ^{2 to} 130 g / m ² , more preferably 90 g / m ^{2 to} 110 g / m ² .

When the waterproof polymer film and the nonwoven fabric are used in combination, the material of the nonwoven fabric is, for example, rayon, nylon, polyester, acrylic, polypropylene, vinylon, polyethylene, urethane, cotton, cellulose, etc., and its thickness is usually Is 20 g / m ^{2 to} 120 g / m ² , preferably 30 g / m ^{2 to} 100 g / m ² , more preferably 40 g / m ^{2 to} 60 g / m ² . Nonwoven fabrics include melt blown nonwoven fabrics, spunbond nonwoven fabrics, spunlace nonwoven fabrics, and spun needle nonwoven fabrics, and any of them can be used in the present invention.

When the waterproof polymer film and the knitted fabric are used in combination, the material of the knitted fabric is, for example, rayon, polyester, polypropylene, nylon, acrylic, etc., and the thickness is usually 80 g / m ^{2 to} 150 g / m ^2. , Preferably 90 g / m ^{2 to} 120 g / m ² .

  The adhesion between the polymer film and the layer of the other material may be partial or over the entire surface, but the entire surface is preferred. In addition, this adhesion may be performed by, for example, melting and fusing a polymer constituting the polymer film or using an adhesive.

  When the bottom surface portion or side surface portion of the main body portion, or the lid portion is composed of two or more layers, for example, when composed of a waterproof polymer film and a nonwoven fabric, any layer may be outside. When the waterproof polymer film is on the inside and the nonwoven fabric is on the outside, the feel when using the structure for cooling or heating is good.

  In the case where the main body portion has an inner lid portion made of a water permeable material, the material of such an inner lid portion is not particularly limited as long as it is water permeable. Examples of the water permeable material include woven fabric, non-woven fabric, knitted fabric, and paper. Specific examples thereof are the same as those described in the description of the woven fabric, nonwoven fabric, and knitted fabric used in combination with the waterproof polymer film.

  The main body includes a water retaining body. The water retaining body includes a water-absorbing polymer and a support for the polymer.

  The water-absorbing polymer refers to a polymer compound having water absorption and water retention performance. Examples of the water-absorbing polymer include polyacrylate (eg, partial sodium salt), acrylic acid-vinyl alcohol copolymer, sodium polyacrylate crosslinked product, starch-acrylic acid graft copolymer, crosslinked starch-acrylic acid. Hydrolyzate of graft polymer, isobutylene-maleic anhydride copolymer and saponified product thereof, polyaspartic acid, cross-linked polyacrylamide copolymer, cross-linked acrylic acid (salt) -acrylamide copolymer, cross-linked Polyacrylic acid (salt), cross-linked acrylic acid (salt) -acrylic ester copolymer, cross-linked carboxylic acid-modified polyvinyl alcohol, cross-linked N-vinyl compound, cross-linked polysulfonic acid (salt), Crosslinked polyacrylic acid (salt) -polysulfonic acid (salt) copolymer, crosslinked (Meth) acrylamide-N-alkyl (C1-5) sulfonic acid (salt), crosslinked (meth) acrylamide-N-alkyl (C1-5) sulfonic acid (salt)-(meth) acrylic Acid (salt) copolymer, cross-linked sulfonated polyethylene, cross-linked Poval ™, cross-linked poly (meth) acrylamide, cross-linked polyethylene oxide, cross-linked polyvinyl alcohol, cross-linked carboxymethyl cellulose, etc. Is mentioned.

  As a water-absorbing polymer, a water absorption amount measured using pure water instead of 0.9% sodium chloride aqueous solution is 50 to 500 times the weight of its own weight in accordance with JIS K7223. It is preferable to use 70 to 500 times by weight, and it is particularly preferable to use 100 to 500 times by weight.

  Further, as the water-absorbing polymer, it is preferable to use a polymer having an absorption amount of 0.9% sodium chloride aqueous solution (physiological saline) measured according to JIS K7223 that is 10 to 150 times the own weight, 30 to It is more preferable to use 150 times by weight, and it is particularly preferable to use 50 to 150 times by weight.

The amount of the water-absorbing polymer is 30 to 200 g, preferably 50 to 180 g, more preferably 70 to 150 g per 1 m ² of the water retaining body. In addition, when a “fiber containing a water-absorbing polymer component serving as both a water-absorbing polymer and its support”, which will be described later, is used as at least a part of the water retaining body, the water-absorbing polymer component in the fiber Is also calculated as the amount of water-absorbing polymer.

If the amount of the water-absorbing polymer is too small or the water-absorbing performance of the water-absorbing polymer is small, the water may not be sufficiently retained by the water retaining body, and water may leak out of the main body of the cooling or heating structure. is there. Therefore, in the present invention, based on the amount of the water-absorbing polymer per 1 m ² of the water retaining body (unit: g) and the water-absorbing polymer water absorption test method described in JIS K7223 for the water-absorbing polymer. The water-absorbing polymer was measured by using pure water instead of the 0.9% sodium chloride aqueous solution and multiplied by the water absorption amount (unit: weight times) to be 7,000 to 100,000. The number and the amount are preferably selected, and the numerical value is more preferably 10,000 to 100,000, and particularly preferably 15,000 to 10,000. In addition, the amount of the water-absorbing polymer per 1 m ² of the water retaining body (unit: g) and the absorption of physiological saline measured based on the water-absorbing polymer water absorption test method described in JIS K7223. A value obtained by multiplying the amount (unit: weight times) is preferably 2,000 to 10,000.

  The shape of the water-absorbing polymer is not particularly limited, and is, for example, a particle shape, a powder shape, a fiber shape, or the like.

  The support of the water-absorbing polymer is a main component of the water holding body, and this specifies the shape of the water holding body. The support of the water-absorbing polymer is made of a material having water absorption and / or water retention. In the present invention, it is preferable to use a sheet-like water-absorbing material, that is, a water-absorbing sheet. Specific examples of the water-absorbing material include paper, linear pulp, cotton such as punched cotton, water-absorbing or water-retaining nonwoven fabric, woven fabric, knitted fabric, sheet-like water-absorbing material such as a synthetic resin porous sheet, and foam synthesis. Synthetic resin moldings such as resin (polyurethane foam, viscose foam, nylon foam, foamed phenol resin, foamed urea resin, etc.), sponge, absorbent cotton, rayon cotton, coconut shell fiber or wood fiber fibrous mat, blanket Etc. Among these, cotton, non-woven fabric, knitted fabric, and synthetic resin molded product are preferable. From the viewpoint of corrosion and corrosion resistance, durability and lightness, a water-absorbing or water-retaining non-woven fabric such as a spun needle non-woven fabric, polyurethane, A foamed synthetic resin such as foam is preferred.

When a nonwoven fabric is used as the support for the water-absorbing polymer, the thickness is usually 30 g / m ^{2 to} 150 g / m ² , preferably 50 g / m ^{2 to} 120 g / m ² , more preferably 80 g / m ^{2 to} 100 g. / M ² .

  The water-absorbing or water-retaining nonwoven fabric is produced, for example, from water-absorbing fibers or from a mixture of water-absorbing fibers and water-retaining fibers. Examples of water-absorbing fibers include cross-linked acrylic ester fibers, acrylic fibers whose surfaces are hydrolyzed, fibers obtained by graft polymerization of (meth) acrylic acid on polyester, polyester fibers, and the like. The water retention fiber is a concept including not only hydrophilic fibers such as rayon but also porous fibers capable of retaining water in the voids inside the fibers.

  The water-absorbing polymer support usually holds the water-absorbing polymer. “Holding the water-absorbing polymer” means (1) that the water-absorbing polymer is attached or held on the surface of the support, and (2) the water-absorbing polymer is mixed in the support (for example, kneading (3) means that the water-absorbing polymer is sandwiched between two supports to form one sheet.

  The method for holding the water-absorbing polymer on the support, such as a nonwoven fabric, is not particularly limited. For example, a method in which the water-absorbing polymer is sandwiched between two nonwoven fabrics and bonded by heat treatment, use of an adhesive, etc. There are a method of spraying water-absorbing polymer particles or powder from above and allowing a part of the water-absorbing polymer particles or powder to enter the eyes of the nonwoven fabric, and a method of allowing the water-absorbing polymer to coexist during the production of the nonwoven fabric. In addition, when a small amount of water is held in the water-absorbing polymer particles or powder dispersed on the nonwoven fabric, the nonwoven fabric more reliably holds the particles or powder. Alternatively, an adhesive may be used to bond the water-absorbing polymer particles or powder to the nonwoven surface.

  The role of the support of the water-absorbing polymer includes the smooth supply of water to the water-absorbing polymer in addition to the retention of the water-absorbing polymer. This is because when the water-absorbing polymer holds water, the support first holds water, and the water once held is supplied to the water-absorbing polymer. Moreover, the support body of a water absorbing polymer also contributes to provision of cushioning properties.

  Previously, “the support of the water-absorbing polymer usually holds the water-absorbing polymer.” The reason why the fiber containing the water-absorbing polymer component is used for forming the water retaining body is that the fiber absorbs water. This is because it becomes a polymer and support, and the support does not need to hold a separate water-absorbing polymer.

  “Fiber containing a water-absorbing polymer component” refers to a fiber called “super water-absorbing fiber”. Since this fiber can be processed into a non-woven fabric, spun yarn, knitted fabric, woven fabric, etc., if the water retaining body is formed of such a non-woven fabric made of such fiber, the water-absorbing polymer particles are separately added to the fiber (support). ) May not be held. Of course, such a fiber may be used for forming the support, and the water-absorbing polymer particles may be separately held on the fiber (support).

  As a specific example of the superabsorbent fiber, a fiber made by spinning a polymer mainly composed of sodium polyacrylate (about 70% by weight), for example, Beloasis (registered trademark) manufactured by Teijin Co., Ltd. Can be mentioned. A nonwoven fabric containing about 20 to 30% by weight of Bel Oasis (registered trademark) is known, and when such a nonwoven fabric is used as a water retaining body, a part of the water retaining body is “a water-absorbing polymer and its support. It is composed of a fiber containing a water-absorbing polymer component that plays both roles of the body (that is, Belasis (registered trademark)). Moreover, the ratio of the water-absorbing polymer component (sodium polyacrylate) in such a nonwoven fabric is about 14 to 21% by weight. The liquid absorption amount of Bel Oasis (registered trademark) is 80 times its own weight when the liquid is water (conforming to JIS K7223), and 45 times its own weight when using saline (according to the method described in JIS K7223). It is. Therefore, the liquid absorption amount of the water-absorbing polymer component in Bel Oasis (registered trademark) is about 110 to 120 times its own weight when the liquid is water, and about 60 to 70 times its own weight when physiological saline is used. is there.

  The inner layer is an acrylic fiber, the outer layer is a fiber in which a hydrophilic group-containing monomer such as a carboxylic acid group and a hydroxyl group-containing monomer are copolymerized and an ester crosslink is introduced, or only the outer layer of polyacrylonitrile fiber is hydrolyzed. A fiber having a carboxylic acid group introduced is also known as a superabsorbent fiber. As a specific example of the former, “Lanseal (registered trademark) F” manufactured by Toyobo Co., Ltd. is known. The ratio of the water-absorbing polymer component in the Lanseal (registered trademark) F fiber is about 40 to 60% by weight. The liquid absorption performance of this fiber is 120 to 150 times its own weight when the liquid is water (conforming to JIS K7223), and 40 to 50 times its own weight when using saline (according to the method described in JIS K7223). It is. Therefore, the liquid absorption amount of the water-absorbing polymer component in Lanseal (registered trademark) F fiber is about 250 to 300 times its own weight when the liquid is water, and about 80 to 100 times its own weight when the physiological saline is used. It is. Further, Lanseal (registered trademark) F fiber has a water retention amount (using 1% saline) under a load measured by the following method, which is 15 to 20 times its own weight.

(Measurement method of water retention amount under load)
A 10% × 10 cm “Lanseal (registered trademark) F” non-woven fabric is sufficiently absorbed with 1% saline (about 50 ml / g), drained, and a 5 kg load is placed on it. Then weigh the nonwoven fabric.

Further, the water retention amount of the pure water measured under the following conditions is preferably 1 to 7 kg, more preferably 1.5 to 7 kg per 1 m ^{2 of} the water retention body. Even more preferred.
(Method for measuring the amount of pure water retained)
The pure water is sufficiently absorbed by the 50 cm × 50 cm water retaining body. After draining, a 25 kg weight with a bottom size of 50 cm × 50 cm is placed on this (this corresponds to 100 kg / m ² ). When the leaching of water disappears, the weight W is measured, and the water retention amount per 1 m ² of the water retention body is calculated by the following formula (I).

Water holding amount per 1 m ² of water holding body (kg) = (weight W−dry weight of water holding body) × 4 (I)

It is preferable that the water retaining body further includes an antibacterial agent and / or a spinner. Examples of antibacterial agents and / or antifungal agents include silver compounds. As a specific example of the silver compound, Ag _x H _y A _z M ₂ (PO ₄ ) ₃ described in JP-A-5-321030 (wherein A is an alkali metal, M is Zr, Ti or Sn, x, y, and z are each a positive number of less than 1, x + y + z = 1, and the ratio of silver is 1 to 7 wt%. An antibacterial agent containing this compound as an active ingredient is commercially available in the form of a fine powder under the trade name Novalon (Toagosei Chemical Co., Ltd.). This antibacterial agent includes, for example, an acrylic polymer such as sodium polyacrylate, and a polymer that contains this antibacterial agent, is miscible with the acrylic polymer, and is incompatible and exists in a phase-separated state. In the form of antibacterial water-absorbing acrylic synthetic fiber formed by sandwiching A component between B component which is an acrylic polymer, it can be used as the above-mentioned “fiber containing a water-absorbing polymer component”.

  The water-retaining body has antibacterial and / or antifungal agents as triazole antifungal agents, pyrithione antifungal agents, benzimidazole antifungal agents, benzthiazole antifungal agents, isothiazoline antifungal agents, and thiabendazole antifungal agents. It is also preferable to include at least one selected from the group consisting of glazes.

  Examples of triazole antifungal agents include 2- (4-chlorophenyl) -3-cyclopropyl-1- (1H-1,2,4-triazol-yl) -butan-2-ol, carboxybenzotriazole, { 1- (4-chlorophenoxy) -3,3-dimethyl-1- (1,2,4-triazol) -1-yl} butan-2-one and the like. Examples of pyrithione antifungal agents include 2-pyridinethiol-1-oxide sodium salt and zinc salt. Examples of benzimidazole antifungal agents include 2- (4-thiazolyl) benzimidazole, 2- (carbomethoxyamino) benzimidazole, methyl 2-benzimidazolecarbamate, 1-butylcarbamoyl-2-benzimidazolecarbamic acid Methyl, methyl 6-benzoyl-2-benzimidazolecarbamate, methyl 6- (2-thiophenecarbonyl) -2-benzimidazolecarbamate, 2-thiocyanomethylthiobenzimidazole, 1-dimethylaminosulfonyl-2-cyano-4 -Bromo-6-trifluoromethylbenzimidazole, 2- (2-chlorophenyl) benzimidazole, 2- (1- (3,5-dimethylpyrazolyl) benzimidazole, 2- (2-furyl) benzimidazole, perben Tetrazole, 5,6-dichloro-1-phenoxycarbonyl-2-trifluoromethyl benzimidazole, 4,5,6,7 is tetrachloro-2-trifluoromethyl benzimidazole.

  Examples of benzthiazole antifungal agents include 2- (4-thiocyanomethylthio) benzthiazole, sodium salt of 2-mercaptobenzthiazole, zinc salt of 2-mercaptobenzthiazole, 2- (thiocyanomethylsulfonyl) benz There are thiazole and the like. Examples of isothiazoline antifungal agents include 2- (n-octyl) -4-isothiazolin-3-one, 1,2-benzisothiazolin-3-one, 5-chloro-2-methyl-4-isothiazoline-3- ON, 2-methyl-4-isothiazolin-3-one, 4,5-dichloro-2-cyclohexyl-4-isothiazolin-3-one, and the like. Examples of thiabendazole antifungal agents include thiabendazole.

  Among the above, at least one antifungal agent selected from the group consisting of triazole antifungal agents, pyrithione antifungal agents, benzthiazole antifungal agents, isothiazoline antifungal agents, and thiabendazole antifungal agents It is preferable to use one or more antifungal agents including a triazole type antifungal agent.

  The water retaining material is at least selected from the group consisting of a triazole antifungal agent, a pyrithione antifungal agent, a benzimidazole antifungal agent, a benzthiazole antifungal agent, an isothiazoline antifungal agent, and a thiabendazole antifungal agent. When it is provided with a kind of antifungal agent, its production is preferably carried out as follows.

  First, a polymer support to which a water-absorbing polymer is attached or held is prepared. A polymer support to which such a water-absorbing polymer is attached is such that the water-absorbing polymer adheres to the surface of the polymer support, specifically a nonwoven fabric, with or without the use of an adhesive or a binder. Or the thing hold | maintained may be sufficient and the nonwoven fabric manufactured in presence of a water absorbing polymer may be sufficient. Next, a liquid material containing an antifungal agent and water is sprayed onto the support of the polymer on which the water-absorbing polymer is adhered or held. As a result, the spinner is held on the water-absorbing polymer or a support of the polymer.

  Here, the “liquid material” is a concept including not only a liquid such as a solution but also an emulsified material, a solid having a solid content dispersed in the liquid, and the like having sufficient fluidity. .

  The liquid containing an antifungal agent and water may further contain an aqueous binder. Examples of water-based binders include vinyl acetate-based, acrylic-based, urethane-based, and vinyl acetate / ethylene-based polymers.

Here, the liquid material contains about 0.5 to 5.0% by weight of spinner and about 0 to 5% by weight of aqueous binder. The amount of liquid to be sprayed is such that the amount of the antifungal agent is about 1 to 10 g / m ² .

  The water holding body may further contain water. For example, as described above, when a liquid material containing an antifungal agent and water is sprayed to hold the spinning agent in the water holding body, the water holding body immediately after production also contains water. In addition, since the water | moisture content in a water holding body evaporates with time, the water holding body may not contain water.

  Next, the bag-like cooling or heating structure of the present invention will be described. The bag-containing cooling or heating structure of the present invention includes an outer bag that can be opened and closed, and the cooling or heating structure that is housed in the outer bag.

  In FIG. 7, the typical perspective view which shows the state which unfolded in an example of an outer bag is shown. FIG. 8 is a schematic perspective view showing a closed state of the outer bag. The outer bag 600 has a fastener F sewn around it. By closing the fastener, a bag shape as shown in FIG. 8 is obtained. In other words, it is similar to the wrapping of a mattress. The shape of the outer bag may be any shape as long as the cooling or heating structure can be taken in and out in a bag shape.

  The outer bag is preferably waterproof, but as long as the cooling or heating structure of the present invention is used under normal conditions in which water does not leak from the main body (that is, an amount exceeding the allowable limit). Unless water is used or a very high load is applied during use), it may not be waterproof.

  When the outer bag is waterproof, the material is the same as that described above as the material constituting the bottom and side portions and the lid portion of the main body portion of the cooling or heating structure of the present invention. is there. When the material has a multilayer structure, it is preferable that the inner side is a waterproof film and the outer side is a woven fabric or the like. When the outer bag is not waterproof, the material is preferably a woven fabric or a knitted fabric.

  Next, an example of the manufacturing method of the cooling or heating structure of the present invention will be described. First, a support material (nonwoven fabric, woven fabric, etc.) in which a water-absorbing polymer is held is folded as necessary to obtain a desired thickness and sewn to obtain a desired shape. Manufacturing. Needless to say, only one support material in which the water-absorbing polymer is held may be used.

  A waterproof polymer film, which is a material for the bottom surface, or a laminate of the waterproof polymer film and a nonwoven fabric is prepared. When manufacturing a cooling or heating structure that also has a side surface, in order to form a side surface extending from the four sides of the bottom surface, the side surface rises at the four corners of the bottom surface. Sewing is recommended. The manufactured water retaining body is placed on the bottom surface. At that time, when the main body portion does not have the inner lid portion, the water retaining body is fixed to the bottom surface portion with an adhesive or the like. When the main body portion has an inner lid portion, the water retaining body may be fixed to the bottom surface portion or may remain unfixed.

  In the case of forming the inner lid portion, the water retaining body is covered with a material for the inner lid portion, for example, non-woven fabric, and its four circumferences are bonded, fused or sewn to the bottom surface portion or the side surface portion. Next, the lid material is adhered, fused, or sewn to the main body so that the lid extends from one side of the bag body of the main body.

  The bottom surface portion and the lid portion may be integrally formed with the same material. Moreover, you may attach fasteners, such as a string and a fastener, as needed.

  Next, a method for using the cooling or heating structure of the present invention will be described. First, the lid of the main body is opened. Next, using a medicine can or the like, water is poured from the upper surface of the main body, and the water retaining body holds the water. Close the lid. Once moisture is retained by the water-absorbing polymer, it can be used. Here, in the case of using the structure of the present invention for the purpose of cooling an object such as a human body, in the case of using it for the purpose of heating by using normal temperature water or cooling water. After using warm water or supplying normal temperature water to the water retaining body, the lid is closed and the entire structure is heated with a microwave oven or an electric blanket.

  In the case where the water retaining body has neither an antibacterial agent nor a spinner, it is preferable to add an antibacterial agent and / or an antifungal agent to the supplied water. Examples of antibacterial and / or antifungal agents used include thiabendazole, organophosphate, phenylphenol and isothiazole compounds, benzalkonium chloride, benzethonium chloride, alkyldiaminoethylglycine hydrochloride, glucone Examples include chlorhexidine acid and sodium hypochlorite. These are usually used at a concentration of about 0.0001 to 0.1% (weight / volume), preferably about 0.01 to 0.1% (weight / volume).

  In the cooling or warming structure of the present invention, water evaporates with time, but when water is insufficient, water at an appropriate temperature may be supplied.

  The cooling or warming structure of the present invention may be used by putting the cooling or warming structure in an outer bag in which the cooling or warming structure is removable. If the outer bag is used, even if the lid portion is displaced during use, the water-permeable upper surface (that is, the water retaining body or the inner lid portion) does not directly contact the human body or the like.

  Hereinafter, the present invention will be described specifically by way of examples.

Production of cooling or heating structure and measurement of surface temperature (1) Production of cooling or heating structure A structure A shown in FIG. 9 was produced using the following materials.
(1-1) Material constituting each layer (lid portion 250 and bottom surface portion 260 of main body portion) Linear low-density polyethylene film (thickness: 50 μm) 251 and polyester manufactured by Zhejiang Provincial Nonwoven Fabric Co., Ltd. ( 100%) Spunlaced non-woven fabric (weight per unit: 45 g / m ² ) 252 dry-laminated over the entire surface (supporting body 43 of water-absorbing polymer) 50%) Spun needle nonwoven fabric (weight per unit: 120 g / m ² )
(Water-absorbing polymer 31) Polyacrylic acid partial sodium salt manufactured by Sanyo Kasei Kogyo Co., Ltd. (0.9% sodium chloride aqueous solution absorption by JIS K7223: 50 to 70 times its own weight; absorption of pure water in accordance with JIS K7223: 280 to 480 times its own weight)
(Inner cover part 45) Bel Oasis (registered trademark) non-woven fabric (manufactured by Teijin Co., Ltd.) (weight per unit: 130 g / m ² ); The ingredient is about 70%.

  In addition, the water absorption test method of the highly water-absorbent resin described in JIS K7223 is as follows.

  1.0 g of the dried water-absorbing polymer is placed in a 255 mesh nylon net tea bag (200 mm × 100 mm) and immersed in 1,000 ml of a 0.9% sodium chloride aqueous solution (saline). The tea bag is pulled up after 1 hour, drained for 10 minutes, and the weight A is measured. The weight B in the case where the same operation is performed only with the tea bag is defined as a blank. The water absorption M (g / g) is calculated according to the following formula (II).

  Water absorption ratio M = (A−B−1.0) /1.0 (II)

  In the formula (II), “1.0” in the numerator and denominator is the weight of the water-absorbing polymer used in the test. When measuring the amount of water absorbed, the weight of the water-absorbing polymer is 0.5 g, and pure water is used instead of physiological saline. Accordingly, in the formula (II), “1.0” in the numerator and denominator becomes “0.5”. That is, when pure water is used, the following formula (III) is obtained.

  Water absorption ratio N = (A−B−0.5) /0.5 (III)

(1-2) Manufacturing Method The material for the bottom surface portion 260 having a size of 80 cm × 120 cm was placed with the surface of the nonwoven fabric 252 facing upward. A 75 cm × 115 cm polyester (50%) / rayon (50%) spun needle nonwoven fabric 43 was placed on the nonwoven fabric 252 of the bottom portion 260 material. Polyester (50%) / rayon (50%) spun needle nonwoven fabric 43 was uniformly sprinkled with 50 g of water-absorbing polymer 31 on the surface thereof and held on nonwoven fabric 43. The amount of the water-absorbing polymer was 58 g / ^{m 2.}

Next, an aqueous solution containing butyl benzoate (preservative), methyl benzoate (preservative), triazole compound (antifungal agent; Amorden NBP8; manufactured by Daiwa Chemical Industry Co., Ltd.) and a vinyl acetate aqueous binder is prepared. The solution was sprayed uniformly from above the spun needle nonwoven fabric to which the water-absorbing polymer was adhered. The spray amount was 1 g / m ^{2 for} butyl benzoate and methyl benzoate, and 6 g / m ^{2 for} Amorden NBP8.

The spun needle non-woven fabric 43 to which the water-absorbing polymer 31 is applied is treated with a non-woven fabric 45 containing Beloasis (registered trademark) fibers, and the four circumferences thereof are bottom portions 260. Heat sealing was performed on the four circumferences of the material. The amount of the water-absorbing polymer component in Beloasis® non-woven fabric 45 was about 18.2 g / m ² .

  Next, one side of the lid 250 material was bonded onto one side of the heat seal part. In addition, the material for the lid part 250 was used so that the outer side was a polyethylene film 251.

(2) Production of outer bag (2-1) Material for outer bag Dry laminate of polyester pongy (100% polyester woven fabric) and linear low density polyethylene film (thickness: 50 μm) on the entire surface (2- 2) Manufacture The outer bag material was sewn, a fastener was attached, and the outer bag shown in FIG.7 and FIG.8 was manufactured.

(3) Experiment (1)
(3-1) The lid portion 250 of the cooling or heating structure A was opened, 3 liters of water was poured from above the middle lid portion 45, the water retaining body 55 was retained, and then the lid portion 250 was closed.
(3-2) Foamed polyethylene having a vapor-deposited cooling or warming structure A (orientation in which the lid 250 is on top) and an aluminum vapor deposition layer on one side of the heat-retaining sheet 700 placed thereon A sheet (in the direction in which the aluminum vapor deposition layer faces up) was put in the outer bag 600. A surface thermometer 800 was placed under the cooling or warming structure A.
(3-3) On the electric blanket (Asama DE Warm AW-50T; 100V; 50W) 500 manufactured by Sankyo Co., Ltd., the cooling or heating structure A or the like having the structure described in (3-2) is provided. The loaded outer bag 600 was placed (see FIG. 10).
(3-4) The temperature was measured with a surface thermometer 800 before the start of the experiment. The zipper of the outer bag 600 was closed. Next, the temperature setting of the electric blanket was heated as “strong”, and the structure A for cooling or heating was stored. The surface temperature of the cooling or heating structure A was measured every 30 minutes. The electric blanket was switched off after 2 hours. The results are shown in Table 1.
(3-5) On the mattress 900, the outer bag 600 in which the stored cooling or heating structure A or the like was placed was placed. At this time, the heat insulation sheet 700 was disposed so as to face the mattress.
(3-6) An adult male H (66 years old, body temperature: 35.8 ° C.) lies on the outer bag 600 in which the stored cooling or heating structure A or the like is placed, and a comforter 910 is hung. (See FIG. 11).
(3-7) Sleeping for about 8 hours, and immediately after getting up, the surface temperature of the structure A for cooling or heating was measured.
(3-8) The steps (3-3) to (3-7) were performed on the next day and the next day.
The results are shown in Table 2. This experiment was performed in a room adjusted to approximately 13.5 ° C.

  As is apparent from Table 2, when the cooling or warming structure A of the present invention was used, it was revealed that there was a heat retention effect until morning with heat storage for a short time (about 2 hours). Therefore, the present invention contributes to energy saving.

(4) Experiment (2)
(4-1) Use of cold water Open the lid portion 250 of the cooling or warming structure A, pour 3 liters of water at 5 ° C. from above the middle lid portion 45 to retain the water retaining body 55, and then cover the lid portion 250. Closed. In the room at 20 ° C., the surface temperature outside the lid 250 was measured over time. The results are shown in Table 3.

(4-2) Use of warm water Open the lid 250 of the cooling or warming structure A, pour 3 liters of water at 50 ° C. from the top of the middle lid 45, and retain the water in the water retaining body 55, and then the lid 250 Closed. In the room at 20 ° C., the surface temperature outside the lid 250 was measured over time. The results are shown in Table 4.

(Measurement of water retention performance of water retaining body)
Polyester (50%) and rayon (50%) span needle nonwoven fabric (weight per unit: 120 g / m ² ) made by Jiangsu Province, Changshu, China Nonwovens Co., Ltd., having a size of 50 cm x 50 cm (0.25 m ² ) Prepared. The water-absorbing polymer powder was sprinkled evenly over this, and then some water was sprayed to hold the water-absorbing polymer on the nonwoven fabric.

  Next, 2 liters of water was applied from above the water absorbent polymer-attached nonwoven fabric to retain the water absorbent polymer and the nonwoven fabric.

A weight of 25 kg with a bottom area of 0.25 m ² (50 cm × 50 cm) was placed on the water absorbent polymer-attached nonwoven fabric, and the presence or absence of water separation was observed. The results are shown in Table 5.

In addition, the water absorbing polymer used was as follows.
Polymer a: Polyacrylic acid partial sodium salt; pure water absorption (method according to JIS K7223) 320 times its own weight; physiological saline absorption (JIS K7223) 60 times its own weight Polymer b: isobutylene / maleic anhydride co-polymer Combined partial sodium salt; pure water absorption (method according to JIS K7223) 180 times its own weight; physiological saline absorption (JIS K7223) 40 times its own weight

(Measurement of water retention performance of water retaining body)
A non-woven fabric containing Lanseal (registered trademark) F manufactured by Toyobo Co., Ltd. was used as a water retaining body. The absorption amount of pure water (method according to JIS K7223) of the used Lanseal (registered trademark) F fiber was 120 times its own weight, and the absorption amount of physiological saline (JIS K7223) was 40 times its own weight. The proportion of Runseal (registered trademark) F fibers in the nonwoven fabric was about 40% by weight. The basis weight of this nonwoven fabric was 100 g / m ² . Moreover, the ratio of the water-absorbing polymer component in Lanseal (registered trademark) F fiber was about 50%. Therefore, when only one non-woven fabric is used, the amount of the water-absorbing polymer component is about 20 g / m ² , the absorption amount of pure water of the water-absorbing polymer component is 240 times its own weight, and the absorption amount of physiological saline is its own weight. 80 times.

In addition to the one nonwoven fabric, the amount of pure water retained was measured by the following method using two or three nonwoven fabrics stacked and sewn. The results are shown in Table 6.
(Method for measuring the amount of pure water retained)
The pure water is sufficiently absorbed by the 50 cm × 50 cm water retaining body. After draining, a 25 kg weight with a bottom size of 50 cm × 50 cm is placed on this (this corresponds to 100 kg / m ² ). When water leaching has ceased, the weight W (kg) is measured, and the amount of water retained per 1 m ² of the water retaining body is calculated by the following formula (IV).

Water holding amount per 1 m ² of water holding body (kg) = (weight W−dry weight of water holding body) × 4 (IV)

It is a typical perspective view which shows an example of the structure for cooling or heating of this invention. It is sectional drawing of the XX line in FIG. It is a typical perspective view which shows another example of the structure for cooling or heating of this invention. It is sectional drawing of the YY line in FIG. It is a typical perspective view which shows another example of the structure for cooling or heating of this invention. It is sectional drawing of the ZZ line in FIG. 5 (2). It is a typical perspective view which shows the state unfolded in an example of an outer bag. It is a typical perspective view which shows the closed state in an example of an outer bag. 1 is a schematic cross-sectional view of a cooling or heating structure A of the present invention used in Example 1. FIG. It is typical sectional drawing which shows the heating state in the electric blanket of the structure A for cooling or heating of this invention in Example 1. FIG. It is typical sectional drawing which shows the mode of sleeping using the structure A for cooling or heating of this invention in Example 1. FIG.

Explanation of symbols

a, b, c, d, e Side 11 Middle lid portion 20, 21, 22 Bottom portion 25, 26 Side surface portion 30, 31 Water-absorbing polymer 40, 43 Water-absorbing polymer support 41 Non-woven fabric 45 Middle lid portion 50, 51 , 52, 55 Water retaining body 100, 110, 120 Main body portion 200, 210, 220, 250 Lid portion 211 Terminal portion 251 Polyethylene film 252 Non-woven fabric 260 Bottom surface portion 300 Adhesive piece 600 Outer bag 700 Thermal insulation sheet 800 Surface thermometer 900 Mattress 910 Quilt 1000, 1100, 1,200 Structure for cooling or heating

Claims (14)

A cooling or heating structure including a main body and a lid, wherein the main body includes a waterproof bottom surface portion and a water retention body disposed on the bottom surface portion. The amount of the water-absorbing polymer is 30 to 200 g per 1 m ² of the water retaining body, and the lid part is bonded to one side of the main body part or extends from one side. A cooling or heating structure characterized by being openable and closable so as to cover the upper surface of the main body when closed, and being waterproof. Based on the water absorption test method of the superabsorbent resin described in JIS K7223, provided that the water absorption of the water absorbent polymer, measured using pure water instead of 0.9% sodium chloride aqueous solution, The cooling or heating structure according to claim 1, wherein the structure is 50 to 500 times by weight of its own weight. Based on the amount of water-absorbing polymer per 1 m ² of water retaining body (unit: g) and the water-absorbing polymer water-absorbing polymer test method described in JIS K7223, but 0.9% chloride The cooling or heating according to claim 1 or 2, wherein a value obtained by multiplying the amount of water absorption (unit: weight times) measured using pure water instead of the aqueous sodium solution is 7,000 to 100,000. Warm structure. The structure for cooling or heating according to any one of claims 1 to 3, wherein the main body portion further has a waterproof side surface portion. The at least one part of the support body of a water absorbing polymer comprises the inner cover part which is couple | bonded with the outer peripheral part of a bottom face part, or the upper end part of a side part, and does not open and close. Cooling or heating structure. The cooling or heating according to any one of claims 1 to 4, wherein the main body portion further includes an inner lid portion made of a water-permeable material that is coupled to the outer peripheral portion of the bottom surface portion or the upper end portion of the side surface portion and does not open and close. Warm structure. The structure for cooling or heating according to any one of claims 1 to 6, wherein the main body further contains water. The structure for cooling or heating according to any one of claims 1 to 7, wherein the water retaining body further comprises an antibacterial agent and / or an antifungal agent. The structure for cooling or heating according to claim 8, wherein the antibacterial agent and / or the antifungal agent is a silver compound. The antibacterial agent and / or antifungal agent comprises a triazole antifungal agent, a pyrithione antifungal agent, a benzimidazole antifungal agent, a benzthiazole antifungal agent, an isothiazoline antifungal agent, and a thiabendazole antifungal agent. The structure for cooling or heating according to claim 8, which is at least one selected from the group. The cooling or according to any one of claims 1 to 10, wherein at least a part of the water-holding body is composed of fibers containing a water-absorbing polymer component serving as both a water-absorbing polymer and a support thereof. Structure for heating. A bag-containing cooling or heating structure comprising: an outer bag that can be opened and closed; and the cooling or heating structure according to any one of claims 1 to 11 housed in the outer bag. Water-absorbing polymer, support of the polymer, and triazole antifungal agent, pyrithione antifungal agent, benzimidazole antifungal agent, benzthiazole antifungal agent, isothiazoline antifungal agent, and thiabendazole antifungal agent A method for producing a water retaining body comprising at least one antifungal agent selected from the group consisting of: spraying a liquid material containing an antifungal agent and water onto a polymer support to which a water-absorbing polymer is attached. The manufacturing method of a water holding body including the process to do. The method for producing a water-retaining body according to claim 13, wherein the liquid material containing an antifungal agent and water further contains an aqueous binder.

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