Insulation bag and insulation material contained in the bag

Abstract

To provide a bag body for a heat insulation material which enables easy attachment / detachment of a heat insulation material regardless of an object shape, and to provide a heat insulation material placed in the bag body.SOLUTION: A bag body 10 for a heat insulation material includes: a bag shaped body 20 including an insertion port 23 through which a heat insulation material body 30 is housed; a string-like body which fixes the bag shaped body 20 to a heat insulation object; and a passage member 24 which is provided at the outer side of the bag shaped body 20 and allows the string-like body to pass therethrough to fix the string-like body to the heat insulation object. A heat insulation material 1 placed in the bag body includes: the bag body 10 for a heat insulation material; and a heat insulation material body 30 housed in the bag body 10 for the heat insulation material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an insulation pouch and insulation contained therein. [Background technology]

[0002] 2. Description of the Related Art Various insulating materials are used to cover and insulate thermal equipment such as heat exchangers and hot and cold water tanks, as well as their associated piping and mechanical equipment. For example, in the hot water tank disclosed in Patent Document 1, an insulating material made of an inorganic fiber molded body is stored in a bag-like object made of breathable fabric and non-breathable film, and the outside of the hot water tank is covered with fasteners such as string, adhesive tape, staples, and clips. Furthermore, in the heat-retaining cover for a radiator disclosed in Patent Document 2, a bag-shaped body is made of an exterior material of silicone-coated glass cloth and an interior material formed of aramid felt, and a three-layered fiber-based insulating material is placed inside, the first layer being a ceramic iron mat containing glass fibers, a second felt-like layer of rock wool bound with resin, and a third layer of aramid felt, and the heat-retaining device is covered and secured with string. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-299967 A [Patent Document 2] JP 2009-127684 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the above-mentioned heat insulating material is put into a bag-shaped main body or a bag body and the thermal equipment is covered and fixed with a string or the like, there are problems in that the fixing during installation is cumbersome, and the removal of the heat insulating material during maintenance of the thermal equipment is also cumbersome. In addition, depending on the shape of the thermal equipment to be insulated, there is a problem that fixing is difficult because the string or the like shifts during the work.

[0005] The present invention has been made in consideration of these problems and the current situation, and aims to provide a bag for insulation material that allows the insulation material to be easily attached and removed regardless of the target shape, and an insulation material placed in the bag. [Means for solving the problem]

[0006] A bag for insulating material according to a first aspect of the present invention that solves the above problems is as follows: A bag-shaped body having an insertion opening for accommodating a thermal insulation body; A string-like body that fixes the bag-like body to an object to be insulated; A threading member that is provided on the outside of the bag-shaped body and through which the string-shaped body is passed and fixed to the insulation target; Equipped with picture, The insulation body is a rigid polyurethane foam. It is characterized by:

[0007] The string-like body can be selected according to the shape of the object to be insulated, It is preferable that the threading member is configured in a plurality of different widths corresponding to the widths of the string-like body.

[0008] It is preferable that the through member is arranged at a plurality of locations.

[0009] The bag-like body is preferably made of a polyvinyl chloride (PVC) tarpaulin.

[0010] The insulating material contained in the bag according to the second aspect of the present invention for solving the above problems is as follows: Any of the above-mentioned bags for insulating material; A thermal insulation body contained in the thermal insulation bag. It is characterized by:

[0011] The heat insulating material body is preferably configured to have a thickness required for insulating the object to be insulated.

[0012] The heat insulating material body is ,song It is preferable that the polyurethane foam be a flexible, slab-shaped rigid polyurethane foam.

[0013] The heat insulating material body preferably has a thermal conductivity of 0.024 W / (m·K) or less. Effect of the Invention

[0014] According to the present invention, the heat insulating material can be easily attached and removed regardless of the shape of the object. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 shows one embodiment of a bag for insulating material and an insulating material placed in the bag of the present invention, in which (a) is a front view and (b) is a rear view. [Diagram 2] FIG. 13 is a development view of another embodiment of the present invention. [Diagram 3] 1 is a schematic perspective view of a string-like body according to one embodiment of the present invention; [Figure 4] 1A is a schematic perspective view of a bendable insulation board according to one embodiment of the present invention, and FIG. 1B is an explanatory view of the bent state. [Diagram 5] FIG. 1 is a schematic perspective view showing an embodiment of the present invention together with an insulating target. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bag for insulating material and an insulating material placed in the bag according to the present invention will be described in detail below with reference to the drawings. As shown in Figures 1 to 5, the bag body for insulation 10 of the present invention is configured to include a bag-shaped body 20 having an insertion opening 23 through which the insulation body 30 is accommodated, a string-shaped body 40 for fixing the bag-shaped body 20 to the object to be insulated A, and a threading member 24 provided on the outside of the bag-shaped body 20 through which the string-shaped body 40 is passed to fix it to the object to be insulated A. The insulating material 1 contained in the bag of the present invention comprises a bag 10 for insulating material, and an insulating material main body 30 contained in the bag 10 for insulating material. That is, the insulating material 1 contained in the bag is formed by containing the insulating material main body 30 in the bag 10 for insulating material (see Figs. 1 to 5).

[0017] The bag-shaped body 20 that constitutes the insulation bag 10 is intended to install and fix the insulation body 30 placed inside to the outside of the object to be insulated A, and while covering the insulation body 30, it also functions as a cover that covers the insulation body 30 itself. The bag-shaped body 20 is fixed to the outside of the body part a of an outdoor hot water tank, which is an example of the object A to be insulated, for example. The bag-like body 20 is formed into a rectangle having a length L with a margin for overlapping to prevent gaps from being formed at both ends of the outer periphery of the body part a of the outdoor hot water tank, and a width B corresponding to the height of the body part a (see FIG. 1, etc.). The bag-like body 20 is formed into a flat rectangular shape with a margin of length L to ensure a space capable of accommodating the thermal insulation material body 30 inside, and a margin of width B, on the front member 21 and the back member 22. The bag-like body 20 is formed into an envelope shape by providing an insertion opening 23 for the thermal insulation material body 30 in at least one of four places around the periphery of the flat rectangular shape.

[0018] The bag-like body 20 may have a rectangular three-dimensional shape provided with a side member (not shown) that provides a depth (thickness, gusset) for securing a space inside for accommodating the heat insulating material body 30. The insertion opening 23 may be provided in two places (two-sided sealed) or three places (three-sided sealed) instead of one place, and when a side member that forms the thickness is provided, one end side of both ends of the side member may be left open and not closed.

[0019] The bag-like body 20 is not limited to a rectangular envelope-shaped body for the body part a according to the shape of the object to be insulated A. For example, as shown in FIG. 2, a bag-like body 20A formed in a cylindrical shape with a bottom is prepared to cover and insulate the top plate part b and the bottom plate part c of an outdoor hot water tank. The bag-like body 20A is formed in a cylindrical shape with a bottom by integrating a bag-like disk member 25, which is a disk-shaped front member 21A and a back member 22A on the front and back, and two rectangular side members 26 on the front and back that are continuous with the outer periphery of the disk member 25. An insertion opening 23A for inserting the heat insulating material body 30 is formed in each of the disk member 25 and the side member 26 of the bottomed cylindrical bag-like body 20A. Note that the side member 26 to be arranged in the body part a of the object to be insulated A may be a single side member 26 of only the front member, and the heat insulating material body 30 may not be inserted, so that the body part a where the side member 26 is located is insulated by the heat insulating material body 30 of the bag-like body 20.

[0020] The bag-like body 20, 20A is provided with a plurality of threading members 24, 24A through which string-like bodies 40 pass to fix the bag-like body 20, 20A to the front member 21, 21A of the insulation target A. The string-like body 40 may be, for example, a belt, a string, or a rope, and may be made of a material such as cloth, woven cloth, synthetic resin, or metal. As shown in FIG. 1(a), the bag-shaped body 20 has through-holes 27 arranged at three locations in the length L direction (circumferential direction), and through-holes 27 arranged at three locations in a straight line in the width B direction (height direction), for a total of nine through-holes 27. The through-hole 27 of the string-like body 40 may be formed to have a constant width, for example, a belt, and the width of the through-hole 27 may be changed so that the position of the string-like body 40 can be shifted depending on the width of the through-hole 27. Also, through-holes (not shown) wider than the width of the through-hole 27 may be arranged alternately with the through-hole 27. In that case, one bag body can accommodate a plurality of belts of different widths, so that the insulating material can be attached to the insulation object A by simply selecting the belt to be used depending on the shape of the insulation object A.

[0021] As shown in Fig. 2, the bag-shaped body 20A has through-holes 24A with through-holes 27A for the string-shaped body 40 (see Figs. 3 and 5) arranged at three locations in the length L direction on the side member 26. Also, a plurality of through-holes 24A for the string-shaped body 40 are provided on the front member of the disk member 25, and through-holes 27A are formed at five locations, two locations on each of two perpendicular directions and one location in the center. Note that the through-holes 24A provided on the disk member 25 may be omitted, and the bag-shaped body 20A may be fixed to the string-shaped body 40 only by the through-holes 24A provided on the side member 26.

[0022] The threading members 24, 24A of the string-like body 40 are arranged at multiple locations, but are not limited to being arranged linearly along the length L direction or width B direction as in the illustrated example, and may be arranged in other ways (not shown), depending on the shape of the insulation target A. For example, the threading members 24, 24A having the through holes 27, 27A oriented diagonally to avoid piping may be arranged in a zigzag pattern or along a spiral pattern. The threading members 24, 24A may be arranged for each insulation target A so that the string-like body 40 can be easily threaded, or may be arranged in multiple locations in advance in the bag-like body 20, 20A of a predetermined size, so that they can be used for general purposes.

[0023] The bag-like bodies 20, 20A are partially punched or partially slit so as to correspond to the shape of the object to be insulated A and to allow the body to be installed while avoiding piping, etc., and the ends of the partially processed parts are closed with a sheet of the same material as the bag-like bodies 20, 20A or a sheet of another material, adhesive tape, etc.

[0024] The material of the bag-shaped body 20, 20A for the insulating material 10, 10A is not particularly limited as long as it is suitable for contacting the object to be insulated A and for the installation environment of the object to be insulated A, and different materials can be used for the front member 21, 21A and the back member 22, 22A. By changing the material of the bag-shaped body 20, 20A depending on the object to be insulated A, it is possible to provide the bag-shaped body with high temperature resistance, moisture resistance, etc., and the bag-shaped body 20, 20A can also compensate for the shortcomings of the insulating material main body 30, such as ultraviolet deterioration, water resistance, and fire resistance, which will be described later. As the material of the bag-shaped body 20, 20A, for example, polyvinyl chloride (PVC) tarpaulin is preferable in terms of water resistance and weather resistance. Also, there are laminates of resin and base fabric for waterproofing, in which the resin is a thermoplastic resin, for example, polyvinyl chloride, thermoplastic polyurethane (TPU), polyolefin such as polyethylene or polypropylene, or polyester such as polyethylene terephthalate, and the base fabric is a woven fabric, knitted fabric, or nonwoven fabric of synthetic fiber, natural fiber, or inorganic fiber, etc. Furthermore, there are laminates of metal-deposited film or aluminum foil for heat resistance, and laminates of layers with moisture resistance, heat resistance, and ultraviolet protection.

[0025] The heat insulating material body 30 is accommodated in the bag-shaped bodies 20, 20A and functions as a heat insulating material, covering the insulation target A and thereby insulating it. The insulation body 30 may be selected according to the insulation properties required for the insulation target A, and is not particularly limited. Although glass wool, a fibrous insulation material, may be used, since its insulation performance is low (for example, the thermal conductivity of high-performance glass wool is 0.035 W / (m·K)), it is preferable to use a rigid polyurethane foam (insulation board) with a surface material that has high insulation performance (for example, the thermal conductivity of rigid polyurethane foam is 0.024 W / (m·K)). If the insulation performance is the same, the construction thickness can be made thinner by using an insulation board, and insulation can be achieved in a compact manner. Furthermore, by using a plate-like insulation board, it is easy to store in the bag-like body 20, 20A, the shape can be maintained, and it is easier to handle and work than fiber-based insulation materials.

[0026] The rigid polyurethane foam insulation body 30 is preferably a bendable insulation board 31 that can be attached to curved surfaces, for example (see FIG. 4). The bendable insulation board 31 is obtained by combining a core material 32 of rigid polyurethane foam with a specific face material 33. That is, the bendable insulation board 31 is a bendable insulation board 31 in which the core material 32 is rigid polyurethane foam and face materials 33 are laminated on both sides of the core material 32, and the tensile strength index of the face material 33 measured in accordance with JIS P8113 is 5.0 Nm / g or more and 13.0 Nm / g or less in the length direction X and width direction Y of the core material 32. The bendable insulation board (hereinafter sometimes simply referred to as insulation board) 31 is difficult to bend when made of rigid polyurethane foam alone, but since facing materials 33 having specific tensile strength ratios in the length direction X and width direction Y of the core material 32 are laminated on both sides, it can be easily bent while retaining the strength provided by the rigid polyurethane foam. Therefore, this insulation board 31 can be used for the insulation body 30 of an object having a curved surface.

[0027] It is further preferable that the face material 33 has a tensile breaking elongation measured in accordance with JIS P 8113 of 25% or more and 35% or less in the length direction X and width direction Y of the core material 32 . By having the face material 33 have a specific tensile strength index and a specific tensile breaking elongation in the length direction X and width direction Y of the core material 32, the force required to bend the insulation board 31 is reduced, making it easier to bend.

[0028] Furthermore, it is preferable that the thickness of the core material 32 made of rigid polyurethane foam is 5 mm or more and 50 mm or less. The thicker the core material 32, the better the heat insulating performance, but if it is too thick, it becomes difficult to bend. By making the thickness of the core material 32 5 mm or more and 50 mm or less, it is possible to obtain an insulation board 31 that has excellent heat insulating performance and is easy to bend.

[0029] Furthermore, it is preferable that the thermal conductivity of the core material 32 of the insulation board 31 is 0.024 W / (m·K) or less (a value measured in accordance with JIS A 9511). This allows the insulation board 31 to have high insulation performance.

[0030] The core material 32 made of rigid polyurethane foam is a foam obtained by mixing and reacting, for example, polyisocyanate, a polyol made of polyether polyol or polyester polyol, a blowing agent, and a foam stabilizer. If necessary, various additives commonly used in the production of rigid polyurethane foam, such as a catalyst and a flame retardant, may be added.

[0031] As the polyol used in the rigid polyurethane foam, polyester polyols or polyether polyols can be suitably used, and these can be used alone or in combination of two or more kinds.

[0032] The polyester polyols include polyols obtained by condensing polyhydric alcohols with polyvalent carboxylic acids, and polyols obtained by ring-opening polymerization of cyclic esters. The polyvalent carboxylic acids include succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, maleic acid, fumaric acid, phthalic acid, terephthalic acid, isophthalic acid, and polyols obtained by anhydrides thereof. On the other hand, the polyhydric alcohols include ethylene glycol, propylene glycol, glycerin, trimethylolpropane, pentaerythritol, sorbitol, sucrose, bisphenol A, and the like. Among them, polyester polyols having aromatic rings are particularly preferred. The hydroxyl value of the polyester polyol is not particularly limited, but is preferably from 100 to 400 mgKOH / g.

[0033] Examples of polyether polyols include polyether polyols obtained by addition polymerization of one or more alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide to alcohols such as aliphatic alcohols, aromatic alcohols, and the above-mentioned polyhydric alcohols; aliphatic amines such as ethanolamine, diethanolamine, triethanolamine, and ethylenediamine; aromatic amines such as toluenediamine and methylenedianiline; and Mannich condensation products. These polyether polyols can be used alone or in appropriate combination of two or more. Among these, as the polyether polyol, aromatic polyether polyol is particularly preferable since it reduces the thermal conductivity. The hydroxyl value of the polyether polyol is not particularly limited, but is preferably 300 to 800 mgKOH / g. Also, a polymer polyol in which a polymer component such as vinyl acetate, polyacrylonitrile, or polyacrylonitrile / styrene copolymer is dispersed in a polyether polyol may be used. In particular, a polymer polyol in which vinyl acetate or polyacrylonitrile / styrene copolymer is dispersed in a polyether polyol is preferably used.

[0034] Examples of polyisocyanates to be reacted with polyols include diphenylmethane diisocyanate (MDI), polymeric diphenylmethane diisocyanate (polymeric MDI), and the like; modified polyisocyanates thereof, that is, products obtained by partial chemical reactions of polyisocyanates, and include polyisocyanates containing groups such as ester, urea, biuret, allophanate, carbodiimide, isocyanurate, and urethane; and the like. These polyisocyanates may be used alone or in appropriate combination of two or more.

[0035] The amount of polyisocyanate used is preferably such that the isocyanate index, as shown in the following formula (1), is 30 to 300, and more preferably 80 to 150. Isocyanate index = NCO groups / active hydrogen of polyol x 100 (1)

[0036] The blowing agent may be at least one selected from water, HFC, HC, HFO, and carbon dioxide. Examples of HFC include 1,1,1,3,3-pentafluoropropane (HFC245fa) and 1,1,1,3,3-pentafluorobutane (HFC365mfc). Examples of HC include normal pentane, isopentane, cyclopentane, and isobutane. Examples of HFOs include tetrafluoropropene (HFO1234), trifluoropropene (HFO1243), 1-chloro-3,3,3-trifluoropropene (HFO1233), tetrafluorobutene (HFO1354 other than 2,4,4,4-tetrafluorobutene-1), pentafluorobutene (HFO1345), hexafluorobutene (HFO1336), heptafluorobutene (HFO1327), heptafluoropentene (HFO1447), octafluoropentene (HFO1438), nonafluoropentene, etc. Examples of carbon dioxide include carbon dioxide in a liquid state, a subcritical state, or a supercritical state. The blowing agent may be water, HFC, HC, HFO, or carbon dioxide, and may be used alone or in appropriate combination of two or more. The amount of the blowing agent used is preferably 5 to 40 parts by mass per 100 parts by mass of the polyol.

[0037] As the catalyst, a conventionally used amine catalyst, metal catalyst, or the like can be used. As the amine catalyst, particularly reactive amine catalysts (compounds having active hydrogen groups in the molecule) are suitable, such as dimethylmethanolamine, dimethylethanolamine, 2-[methyl[2-(dimethylamino)ethyl]amino]ethanol (TMAEEA), 2-[2-(dimethylamino)ethoxy]ethanol (DMAEE), 1,3-bis(dimethylamino)-2-propanol (TMHPDA), 4-methylpiperazine-1-ethanol, 3,3'-[3-(dimethylamino)propylimino]bis(2-propanol) (Thancat-DPA), 2-morpholinoethanol, etc. Commercially available products such as TOYOCAT RX7 (Tosoh Corporation), Polycat 16, Polycat 17, and DabcoWT (Air Products Co., Ltd.) can also be used. Examples of the metal catalyst that can be used include stannous octoate, dibutyltin dilaurate, lead octoate, potassium salts such as potassium acetate and potassium octoate, etc. In addition to these amine catalysts and metal catalysts, quaternary ammonium salts of fatty acids such as formic acid and acetic acid can also be used. The above catalysts may be used alone or in combination of two or more. The amount of the above catalysts used is preferably about 0.1 to 15 parts by mass per 100 parts by mass of polyol.

[0038] The foam stabilizer may be any foam stabilizer known in the art, such as Tegostab (registered trademark) B8232, B8481, B8443, B8465, B8486, B8466, B8450 (all manufactured by Evonik Degussa Japan Co., Ltd.); SF-2936F, SF-2937F, SF-2938F, SF-2945F, SZ-1605, SZ-1642, SZ-1671, etc. (all manufactured by Dow Corning Toray Co., Ltd.). These foam stabilizers may be used alone or in combination of two or more kinds.

[0039] The tensile strength index of the face material 33 is 5.0 Nm / g or more and 13.0 Nm / g or less in the length direction X and width direction Y of the core material 32, as shown in Fig. 4. If the tensile strength index is less than 5.0 Nm / g, the insulation board 31 is easy to bend, but repeated bending may cause the face material 33 to break, resulting in poor durability. If the tensile strength index exceeds 13.0 Nm / g, it is difficult to bend the insulation board 31. The tensile strength index is a value measured in accordance with JIS P8113. Here, as shown in Fig. 4, by using face materials 33 that have a specific tensile strength index in both the X and Y directions for the core material 32, the insulation board 31 can be bent. For example, if the tensile strength index of the face material 33 is greater in the X direction than in the Y direction, the insulation board 31 becomes easier to bend along the Y direction.

[0040] Furthermore, the face material 33 preferably has a tensile breaking elongation of 25% to 35% in the length direction X and width direction Y of the core material 32. If the tensile breaking elongation is less than 25%, the insulation board 31 becomes difficult to bend, and if it exceeds 35%, it becomes easier to bend, but the insulation board 31 may warp or its dimensional stability may deteriorate. The tensile breaking elongation is a value measured in accordance with JIS P 8113.

[0041] As the face material 33, for example, a synthetic resin film, a nonwoven fabric, a metal-deposited film, etc., can be used alone or in combination with a laminate of multiple materials. Examples of the synthetic resin film include polyester films such as polyethylene film, polypropylene film, and polyethylene terephthalate film, polyvinyl chloride film, and synthetic paper mixed with inorganic substances. In order to improve the adhesion with the rigid polyurethane foam that is the core material, for example, corona treatment may be performed. The nonwoven fabric may be made of one or more intertwined fibers selected from the group consisting of synthetic fibers such as polyester fibers, nylon fibers, vinylon fibers, acrylic fibers, polyurethane fibers, and polyolefin fibers; natural fibers such as cotton, hemp, silk, and wool; and inorganic fibers such as glass fibers, carbon fibers, and metal fibers. Examples of the metal-deposited film include aluminum foil, copper foil, iron foil, lead foil, etc., with aluminum foil being lightweight being preferably used.

[0042] The method for producing such a heat insulating board 31 is not particularly limited. For example, continuous production is possible by unwinding one of the facing materials 33 onto a conveyor, discharging the rigid polyurethane foam raw material onto it, and then unwinding the other facing material 33 from above to sandwich the rigid polyurethane foam therebetween. Alternatively, a heat insulating board 31 may be prepared by cutting a previously prepared hard polyurethane foam block into a plate shape to be used as the core material 32, and then attaching a facing material 33 to the surface of the core material 32 using an adhesive or the like.

[0043] Such an insulating board 31 can be easily bent while retaining the strength provided by the rigid polyurethane foam. The insulating board 31 may be evaluated by the minimum radius at which it can be bent (minimum bending radius). The minimum bending radius is the radius R of imaginary circles that overlap when the insulating board 31 is bent to the maximum extent when force is applied to both ends of the insulating board 31, as shown in FIG. 4(b). Note that the minimum bending radius R differs depending on the thickness and length of the insulating board 31, but it is preferable that the insulating board 31 has a minimum bending radius of 1000 mm or less. As a result, the heat insulating board 31 can be easily bent while retaining the strength provided by the rigid polyurethane foam, allowing insulation of curved surfaces, and is easy to fix to curved surfaces and is unlikely to be dented even if a person stands on it or an object falls on it during work, resulting in excellent workability during insulation construction.

[0044] The heat insulating material body 30 made of such a bendable heat insulating board 31 of rigid polyurethane foam is housed in the bag-shaped body 20. The heat insulating material body 30 is housed in a line from the insertion opening 23 of the bag-shaped body 20, and the insertion opening 23 is closed by folding the sheet of the bag-shaped body 20. In addition, when the bag-shaped body 20, 20A is partially punched or partially slit in accordance with the shape of the object to be insulated A so that it can be attached while avoiding piping, the heat insulating material body 30 is not placed in the partially processed part by performing a similar partial processing on the heat insulating material body 30. In this case, the partially processed heat insulating material body 30 may be housed in accordance with the partially processed position of the bag-shaped body 20, 20A, and then the end periphery of the partially processed part may be closed with a sheet of the same material as the bag-shaped body 20, 20A, a sheet of another material, or a tape.

[0045] The heat insulating material 1 placed in the bag is fixed to the object A to be insulated by passing the string-like body 40 through the through holes 27, 27A of the through member 24A of the bag-like bodies 20, 20A. As shown in FIG. 3, the string-like body 40 is configured by a cloth belt 41 with a buckle 42. The material of the string-like body 40 is not particularly limited, and may be any material such as synthetic resin or metal that can be fixed to the insulation target A. The length and width of the string-like body 40 may be appropriately determined and may be selected in consideration of workability. The string-like body 40 is not limited to being configured by one piece, and multiple pieces may be used by connecting them with the buckle 42. The string-like bodies 40 may be fixed by crossing each other and wrapping them around each other.

[0046] Also, as the heat insulating material body 30, a urethane board in which polyurethane foam is covered with front and back materials can be used, and this is housed in the bag-shaped body 20 as a flexible urethane board. By using polyurethane foam with an open cell structure as a flexible urethane board, it is possible to produce an insulation board that is more flexible and has better self-restoring properties than rigid polyurethane foam, resulting in an insulation board with excellent insulation properties. This polyurethane foam is a urethane board with a surface material laminated on the front and back sides, and the polyurethane foam has a strength of 5 to 40 kg / m 3 The foam has a density of 200 mm, a hardness of 30 to 80 as measured by an F-type Asker rubber hardness tester, and an open-cell structure with a closed cell ratio of 0 to 10%, and the urethane board has a dimensional change rate (thickness reduction rate when released after being compressed by 50%) of 10% or less. The facing material is preferably a laminate of a nonwoven fabric and a synthetic resin film. This type of urethane board is a polyurethane foam that has superior flexibility and self-restoring properties compared to conventional rigid polyurethane foam with a closed-cell structure, and polystyrene foams such as bead-processed polystyrene foam (EPS) and extruded polystyrene foam (XPS), and also has superior insulation properties compared to soft foams and fiber-based insulation materials (see Patent No. 6120682).

[0047] This type of flexible urethane board is housed in the same manner as the insulation body 30 having the bendable insulation board 31 by being inserted into the bag-shaped body 20 through the insertion opening 23 and then closing the sheet at the insertion opening 23 by folding it. Note that when the bag-shaped body 20A is used, the flexible urethane board is housed as the insulation body 30 in the same manner.

[0048] In this manner, the insulating material body 30 is accommodated in the bag-shaped bodies 20, 20A, whereby the insulating material 1 encased in a bag is constructed and attached to the object A to be insulated. 5, the heat insulating material 1 placed in the bag using a bag-like body 20 is threaded in advance as a string-like body 40, for example a belt 41, through a threading member 24 of the bag-like body 20. In this case, it is sufficient to thread at least one belt 41, and the belt 41 is threaded through the threading member 24 at a position convenient for temporary fixing (such as a position with good workability). The insulating material 1 placed in the bag is wrapped around the torso a of the object to be insulated A and fixed with belts 41 and buckles 42. In this way, the insulating material 1 placed in the bag is attached with the multiple belts 41 passed through the through-holes 24, and the torso a is insulated. By using a bendable insulation board 31 as the insulation body 30 with the insulation material 1 placed in this bag, even rigid polyurethane foam can be insulated by bending and attaching it along the body part a. Also, by using the insulation material 1 placed in a bag containing a flexible urethane board, it can be bent and attached along the body part a by taking advantage of its flexibility.

[0049] The insulating material 1A, which is made by accommodating the insulating material main body 30 in the bag-shaped body 20A, is fixed to the top plate portion b and bottom plate portion c of the insulation target A by a belt 41 and a buckle 42. In this case, the belt 41 for fixing the bag-shaped body 20A may be passed through the belt 41 for fixing the bag-shaped body 20, and then folded back to be fixed.

[0050] The heat insulating material body 30 may be either a bendable heat insulating board 31 or a flexible polyurethane foam. The heat insulating material body 30 is not limited to the above, and may be a fiber-based material such as glass wool.

[0051] By using the heat insulating material 1, 1A contained in such a bag, not only can it be easily fixed to the object to be insulated A using the string-like body 40, but it can also be easily removed, improving workability. In addition, since it is contained in the bag-like body 20, 20A, it can be easily installed and insulated without any problems when reused after removal. Covering the insulation body 30 with the bag-shaped bodies 20, 20A can avoid problems such as ultraviolet degradation, water resistance, and fire resistance of the insulation body 30. In addition, by housing the plate-shaped insulation body 30, the bag-shaped bodies 20, 20A have a smooth surface without irregularities, and the external shape of the insulation target A after insulation construction can also have a flat surface.

[0052] In the above embodiment, an outdoor hot water tank has been described as an example of the object to be insulated A, but the object is not limited to this, and can be other thermal equipment such as heat exchangers and their piping and mechanical equipment. Specific examples include plate-type heat exchangers, drum-type heat exchangers, boilers, and multi-tube heat exchangers. The object to be insulated A can be used not only for insulation purposes, but also for heat retention.

[0053] As specifically described above in connection with the embodiment, the bag body for insulation 10 of the present invention comprises a bag-like body 20 having an insertion opening 23 through which the insulation body 30 is accommodated, a string-like body 40 for fixing the bag-like body 20 to the object to be insulated A, and a threading member 24 provided on the outside of the bag-like body 20 through which the string-like body 40 passes to fix the bag-like body 20 to the object to be insulated A. According to this configuration, the insulation material body 30 is housed in the bag-shaped body 20, and the string-shaped body 40 is passed through the threading member 24 of the bag-shaped body 20 to attach it to the object to be insulated A, so that the insulation material body 30 can be easily attached and removed regardless of the shape of the object to be insulated A. Moreover, the insulation material body 30 can be easily attached to the object to be insulated A, and the insulation material body 30 can be removed together with the bag-shaped body 20 by removing the string-shaped body 40. This makes it easy to carry out insulation work, and also makes it easy to reuse and attach it. Moreover, by covering the heat insulating material body 30 with the bag-shaped body 20, the heat insulating material body 30 can be protected, and problems such as deterioration due to ultraviolet rays, water resistance, and fire resistance can be avoided.

[0054] In the bag 10 for the insulating material of the present invention, the threading members 24 are configured in a plurality of different widths corresponding to the widths of the string-like bodies 40 . According to this configuration, the insulation material body 30 can be fixed by passing string-like bodies 40 of different widths through the threading member 24, and the width of the string-like bodies 40 can be changed depending on the size of the object to be insulated A, etc.

[0055] The bag 10 for insulating material of the present invention is configured by arranging the through members 24 at a plurality of positions. According to this configuration, by passing the string-like body 40 through the passing members 24 arranged at a plurality of locations, the heat insulating material body 30 can be easily attached even when the shape of the object to be insulated A is different.

[0056] In the bag 10 for heat insulating material of the present invention, the bag-shaped body 20 is made of a tarpaulin made of polyvinyl chloride (PVC). According to this configuration, it is possible to impart water resistance and weather resistance to the bag-shaped body 20, and it is possible to protect the contained heat insulating material body 30.

[0057] The insulating material 1 encased in a bag of the present invention comprises a bag 10 for insulating material and a main insulating material body 30 housed in the bag 10 for insulating material. According to this configuration, the heat insulating material body 30 is housed in the bag-shaped body 20, and the string-shaped body 40 is passed through the threading member 24 of the bag-shaped body 20 to attach it to the object to be insulated A, so that the heat insulating material 1 can be easily attached and removed regardless of the shape of the object to be insulated A. Moreover, the heat insulating material 1 can be easily attached to the object to be insulated A, and the heat insulating material 1 can be removed together with the bag-shaped body 20 by removing the string-shaped body 40. This makes it easy to carry out heat insulation work, and also makes it easy to reuse and attach it. In addition, the heat insulating material 1 placed in the bag can be protected by covering the heat insulating material main body 30 with the bag-shaped body 20, and problems such as ultraviolet degradation, water resistance, and fire resistance can be avoided.

[0058] The heat insulating material 1 placed in the bag of the present invention is configured so that the heat insulating material body 30 has a thickness necessary for insulating the object A to be insulated. According to this configuration, by using the thermal insulation body 30 having a thickness required for thermal insulation performance, it is possible to improve the thermal insulation performance compared to fibrous thermal insulation materials.

[0059] The heat insulating material 1 contained in the bag of the present invention has a heat insulating material body 30 which is a flexible polyurethane foam plate or a bendable rigid polyurethane foam plate. According to this configuration, the polyurethane foam plate has flexibility and is bendable, so that it can be attached along the curved surface even if the insulation target A has a curved surface. In addition, the insulation material main body 30 made of the polyurethane foam plate can be easily accommodated in the bag-shaped body 20.

[0060] The heat insulating material 1 placed in the bag of the present invention has a thermal conductivity of the heat insulating material body 30 of 0.024 W / (m·K) or less. According to this configuration, the necessary thermal insulation properties for the thermal insulation material body 30 can be ensured.

[0061] It should be noted that the present invention is not limited to the above-described embodiment. [Explanation of symbols]

[0062] 1, 1A Insulation material in a bag 10,10A Insulation bag 20,20A Bag-shaped body 21,21A Front member 22, 22A Backing material 23,23A Insertion port 24, 24A Through member 25 Disc member 26 Side member 27,27A through hole 30 Insulation body 31 Bendable insulation board 32 Core material 33 Surface material 40 String-like body 41 Belt 42 Buckle A Insulation target a. Torso b Top plate c Bottom plate part L Length B Width

Claims

1. A bag-shaped body having an insertion opening for accommodating a thermal insulation body; A string-like body that fixes the bag-like body to an object to be insulated; A threading member that is provided on the outside of the bag-shaped body and through which the string-shaped body is passed and fixed to the insulation target; Equipped with The insulation body is a rigid polyurethane foam. A bag for a heat insulating material.

2. The string-like body can be selected according to the shape of the object to be insulated, The threading member is configured with a plurality of different widths corresponding to the width of the string-like body.

2. The bag for insulating material according to claim 1.

3. The through member is configured to be arranged at a plurality of locations.

3. The bag for insulating material according to claim 1 or 2.

4. The bag-shaped body is made of a polyvinyl chloride (PVC) tarpaulin. The bag for insulating material according to any one of claims 1 to 3.

5. A bag for insulating material according to any one of claims 1 to 4, A thermal insulation body contained in the thermal insulation bag. A thermal insulation material contained in a bag.

6. The heat insulating material body is configured to have a thickness necessary for insulating the insulation target, 6. The insulating material encased in the bag according to claim 5.

7. The insulation body is a bendable, plate-shaped rigid polyurethane foam.

7. The insulation material encased in the bag according to claim 6.

8. The thermal insulation body has a thermal conductivity of 0.024 W / (m K) or less. A thermal insulation material contained in the bag according to claim 6 or 7.

Images