Heat shield sheet

Abstract

To suppress condensation.SOLUTION: A heat shield sheet 30 for a roof has: an upper layer 31 and a lower layer 33 made of a heat insulation material; and a heat shield layer 32 formed between the upper layer 31 and the lower layer 33.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a heat-insulating sheet.

Background Art

[0002] Patent Document 1 describes a low-emissivity corrugated plate for heat-insulating the indoor side of a roof of a building. As shown in FIGS. 3 and 4, the low-emissivity corrugated plate 40 is configured to include an aluminum foil 44, a synthetic resin film 43, a heat-insulating material 42, and a metal plate 41 from the indoor side.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the low-emissivity corrugated plate 40 of Patent Document 1, since the aluminum foil 44 is attached to the indoor side, condensation may occur on the lower surface of the aluminum foil 44. The present invention has been made in view of such circumstances, and its object is to suppress condensation.

Means for Solving the Problems

[0005] The heat-insulating sheet according to Embodiment 1 is characterized by having an upper layer and a lower layer formed of a heat-insulating material, and a heat-insulating layer formed between the upper layer and the lower layer. According to this configuration, by having heat-insulating layers on both sides of the heat-insulating sheet, condensation can be suppressed. Further, when the heat-insulating sheet is attached to, for example, a corrugated roof, if the heat-insulating layer is on the surface, there is a risk of the heat-insulating layer breaking. According to this configuration, by having heat-insulating layers on both sides of the heat-insulating sheet, breakage of the heat-insulating layer can be suppressed.

[0006] Aspect 2 is the heat insulation sheet of Aspect 1, wherein the heat insulation layer is formed of aluminum foil. According to this configuration, a higher heat insulation effect can be obtained. Aspect 3 is the heat insulation sheet of Aspect 1, wherein the thickness of the lower layer is thinner than that of the upper layer. For the upper layer, heat insulation effect and suppression of dew condensation are required, while for the lower layer, it serves to protect the heat insulation layer. Therefore, the lower layer can be configured to be thinner than the upper layer. According to this configuration, the thickness of the entire heat insulation sheet can be reduced. Thus, a lightweight and highly processable heat insulation sheet can be obtained.

[0007] Aspect 4 is the heat insulation sheet of Aspect 1, wherein the upper layer and the lower layer are formed of polyolefin foam. According to this configuration, a lightweight and highly processable heat insulation sheet can be obtained. For example, when manufacturing the heat insulation sheet by roll forming, it is possible to suppress the occurrence of wrinkles and breakage of the heat insulation sheet.

[0008] Aspect 5 is the heat insulation sheet of Aspect 1, wherein the upper layer is formed of a non-combustible material. According to this configuration, a heat insulation sheet with fire resistance can be obtained. Aspect 6 is the heat insulation sheet of Aspect 1, which is used by being attached to the outdoor side of the roof with the upper layer located on the outside, and having at least one layer selected from a corrosion-resistant coating layer, a metal layer, and a waterproof layer on the outside of the upper layer. According to this configuration, a heat insulation sheet with corrosion resistance and waterproofness can be obtained.

[0009] Aspect 7 is the heat insulation sheet of Aspect 1, which is used by being attached to at least one of the roof, wall, floor, and foundation of a building. According to this configuration, even when attached to the wall of a building for use, dew condensation can be suppressed. Also, breakage of the heat insulation layer can be suppressed.

Advantages of the Invention

[0010] According to the heat insulation sheet of the present invention, dew condensation can be suppressed.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Mode for Carrying Out the Invention

[0012] An embodiment in which the heat insulation sheet according to the present invention is embodied as a roof heat insulation sheet will be described. First, the folded-plate roof to which the roof heat insulation sheet according to the present invention is attached will be described. As shown in FIG. 1, the folded-plate roof 10 has corrugated unevenness. The folded-plate roof 10 is formed by adhering a steel plate 20 and a roof heat insulation sheet 30 with an adhesive. The folded-plate roof 10 is formed by passing the flat steel plate 20 through a roll forming machine together with the roof heat insulation sheet 30, and is gradually formed by the rolls into a corrugated shape. Depending on the type of roll forming machine, a folded-plate roof material with one to several concave portions can be formed.

[0013] (Roof heat insulation sheet) As shown in FIG. 2, the roof heat insulation sheet 30 has an upper layer 31 and a lower layer 33 formed of a heat insulating material, and a heat insulating layer 32 formed between the upper layer 31 and the lower layer 33. That is, heat insulating layers are provided on both sides of the roof heat insulation sheet 30. Thereby, for example, when the steel plate 20 and the roof heat insulation sheet 30 are formed using a roll forming machine, the roll forming machine does not come into contact with the heat insulating layer 32, so that breakage of the heat insulating layer 32 can be suppressed. Each of the upper layer 31, the heat insulating layer 32, and the lower layer 33 is adhered to each other with an adhesive.

[0014] The upper layer 31 is formed of a heat insulating material. Specific examples of the heat insulating material include, for example, glass wool, rock wool, polyolefin foam, urethane foam, and the like. The upper layer 31 is preferably formed of polyolefin foam. When used for a building that requires fire resistance, the upper layer 31 is preferably formed of a non-combustible material.

[0015] Note that the non-combustible material shall mean a material classified as a "fireproof material" in the Building Standards Law. Specifically, it shall include non-combustible materials, semi-non-combustible materials, and flame-retardant materials classified as "fireproof materials". Among these, it is preferably formed of a non-combustible material.

[0016] The upper layer 31 may be formed of, for example, Furen Ace (registered trademark), glass wool, rock wool, or the like. The thickness of the upper layer 31 can be set to any value, but for example, it is preferably 1 mm or more and 10 mm or less, more preferably 2 mm or more and 9 mm or less, and even more preferably 3 mm or more and 8 mm or less. A specific example of the thickness of the upper layer 31 is 5 mm.

[0017] The lower layer 33 is formed of a heat insulating material. Specific examples of the heat insulating material include, for example, the same ones as those of the upper layer 31. The lower layer 33 is preferably formed of polyolefin foam. The thickness of the lower layer 33 is preferably thinner than the thickness of the upper layer 31. The thickness of the lower layer 33 can be set to any value, but for example, it is preferably 0.5 mm or more and 5 mm or less, more preferably 1 mm or more and 4 mm or less, and even more preferably 1.5 mm or more and 3 mm or less. A specific example of the thickness of the lower layer 33 is 2 mm.

[0018] As the heat shielding layer 32, a known heat shielding paint or a sheet-processed aluminum foil can be used. The heat shielding layer 32 is formed between the upper layer 31 and the lower layer 33. The heat shielding layer 32 is preferably formed of aluminum foil.

[0019] (Steel plate) As the steel plate 20, a known steel plate can be used. Specific examples of the steel plate include, for example, a painted steel plate, a galvanized steel plate, and the like. The thickness of the steel plate 20 can be set to any value, but for example, it is 0.27 mm or more and 1.2 mm or less.

[0020] As shown in FIG. 2, the steel plate 20 is attached to the lower layer 33 side of the roof heat insulation sheet 30. Here, when the heat insulation layer is directly attached to the steel plate, a sufficient heat insulation effect cannot be obtained. On the other hand, since the lower layer 33 is provided between the steel plate 20 and the heat insulation layer 32, an air layer can be formed between the steel plate 20 and the heat insulation layer 32. Thereby, the heat insulation effect can be enhanced.

[0021] As shown in FIG. 1, the roof heat insulation sheet 30 of the present invention is formed so as to have corrugated unevenness in a state overlapping the steel plate 20. Thereby, the folded plate roof 10 to which the roof heat insulation sheet 30 is attached can be obtained. This folded plate roof 10 is used with the roof heat insulation sheet 30 attached to the indoor side.

[0022] Further, when the roof heat insulation sheet 30 is attached to the indoor side, based on the roof heat insulation sheet 30, the upper layer 31 of the roof heat insulation sheet 30 is located on the indoor side. Also, based on the roof heat insulation sheet 30, the lower layer 33 of the roof heat insulation sheet 30 is located on the outdoor side. Thereby, on the indoor side, the upper layer 31 which is a heat insulating material is exposed. Since the heat insulation layer 32 of the roof heat insulation sheet 30 is not directly exposed, the appearance can be improved.

[0023] <Actions and effects of the embodiment> The actions and effects of the roof heat insulation sheet 30 of the present embodiment will be described. (1) The roof heat insulation sheet 30 has an upper layer 31 and a lower layer 33 formed of a heat insulation material, and a heat insulation layer 32 formed between the upper layer 31 and the lower layer 33. According to this configuration, by having heat insulation layers on both sides of the roof heat insulation sheet 30, condensation can be suppressed. Also, when attaching the roof heat insulation sheet to a folded plate roof, if the heat insulation layer is on the surface, there is a risk of the heat insulation layer breaking. According to this configuration, by having heat insulation layers on both sides of the roof heat insulation sheet 30, breakage of the heat insulation layer 32 can be suppressed.

[0024] (2) The heat insulation layer 32 is formed of aluminum foil. According to this configuration, a higher heat insulation effect can be obtained. (3) The thickness of the lower layer 33 is thinner than the thickness of the upper layer 31. For the upper layer 31, heat insulation effect and suppression of condensation are required, while for the lower layer 33, it serves to protect the heat insulation layer 32. Therefore, the lower layer 33 can be configured to be thinner than the upper layer 31. According to this configuration, the overall thickness of the roof heat insulation sheet 30 can be reduced. Thus, a lightweight and highly processable roof heat insulation sheet 30 can be obtained.

[0025] (4) The upper layer 31 and the lower layer 33 are formed of a polyolefin foam. According to this configuration, a lightweight and highly processable roof heat insulation sheet 30 can be obtained. For example, when manufacturing the roof heat insulation sheet 30 by roll forming, wrinkling and breakage of the roof heat insulation sheet 30 can be suppressed.

[0026] (5) The upper layer 31 is formed of a non-combustible material. According to this configuration, a roof heat insulation sheet 30 with fire resistance can be obtained. <Modified Example> This embodiment can be implemented with the following modifications. This embodiment and the following modified examples can be implemented in combination with each other within a technically non - conflicting range.

[0027] · In this embodiment, the heat insulation sheet 30 for the roof is used for the folded-plate roof 10, but it is not limited to this mode. The heat insulation sheet 30 for the roof may be used for a straight roof. Even in this case, dew condensation can be suppressed in the same manner as in this embodiment.

[0028] · In this embodiment, the heat insulation sheet 30 for the roof and the steel plate 20 are adhered by an adhesive and are formed by roll forming, but it is not limited to this mode. The heat insulation sheet 30 for the roof and the steel plate 20 may be attached by an adhesive without performing roll forming. The heat insulation sheet 30 for the roof and the steel plate 20 may be adhered by heat welding and may be formed by roll forming. The heat insulation sheet 30 for the roof and the steel plate 20 may be adhered by heat welding without performing roll forming.

[0029] · In this embodiment, the heat insulation sheet 30 for the roof is used by being attached to the indoor side of the steel plate 20 as the roof, but it is not limited to this mode. The heat insulation sheet 30 for the roof may be attached to the outdoor side of the steel plate 20.

[0030] · In this embodiment, each layer of the upper layer 31, the heat insulation layer 32, and the lower layer 33 is adhered by an adhesive, but it is not limited to this mode. Each layer of the upper layer 31, the heat insulation layer 32, and the lower layer 33 may be adhered by heat welding.

[0031] · In this embodiment, the upper layer 31 of the heat insulation sheet 30 for the roof is formed of a non-combustible material, but it is not limited to this mode. In addition to the upper layer 31, the lower layer 33 may also be formed of a non-combustible material. Only the lower layer 33 may be formed of a non-combustible material. Both the upper layer 31 and the lower layer 33 do not have to be formed of non-combustible materials.

[0032] · In this embodiment, the heat insulation sheet 30 for the roof has the heat insulation layer 32 between the upper layer 31 and the lower layer 33, but in addition to the heat insulation layer 32, it may have other layers. Examples of other layers include a corrosion-resistant coating layer, a metal layer, a waterproof layer, and the like.

[0033] · The heat insulation sheet is not limited to the roof heat insulation sheet 30. The heat insulation sheet may be used by being attached to at least one of the walls, floors, and foundations of a building in addition to the roof of the building. Even when used by being attached to the walls of the building or the like, dew condensation can be suppressed. Also, breakage of the heat insulation layer can be suppressed.

Explanation of reference numerals

[0034] 10... corrugated roof, 20... steel plate, 30... roof heat insulation sheet, 31... upper layer, 32... heat insulation layer, 33... lower layer.

Claims

1. An upper layer and a lower layer formed of a heat insulating material, and a heat shielding layer formed between the upper layer and the lower layer, characterized by having. Heat shielding sheet.

2. The heat shielding sheet according to claim 1, wherein the heat shielding layer is formed of aluminum foil.

3. The heat shielding sheet according to claim 1, wherein the thickness of the lower layer is thinner than the thickness of the upper layer.

4. The heat shielding sheet according to claim 1, wherein the upper layer and the lower layer are formed of a polyolefin foam.

5. The heat shielding sheet according to claim 1, wherein the upper layer is formed of a non-combustible material.

6. It is used by being attached to the outdoor side of the roof with the upper layer located on the outside. The heat shielding sheet according to claim 1, having at least one layer selected from a corrosion-resistant coating layer, a metal layer, and a waterproof layer on the outside of the upper layer.

7. The heat shielding sheet according to claim 1, which is used by being attached to at least one of the roof, wall, floor, and foundation of a building.

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