shielding board

Abstract

To facilitate the manufacture of shielding plates. [Solution] A shielding plate 10 having a seam-hanging portion at one side end and a seam-receiving portion at the other side end, wherein the shielding plate 10 comprises a metal plate 20 and a shielding layer 30, and the shielding layer 30 has, in order from the metal plate 20 side, a first adhesive layer 31, an indoor insulation layer 32 made of glass fiber fabric, a second adhesive layer 33, and an indoor heat-shielding layer 34 made of aluminum or titanium.

Description

Technical Field

[0001] The present invention relates to a shielding plate.

Background Art

[0002] Patent Document 1 describes a low-emissivity corrugated plate (shielding plate) for heat insulation on the indoor side of the roof of a building. The shielding plate described in Patent Document 1 has a corrugation hanging portion at one side end and a corrugation receiving portion at the other side end, and adjacent shielding plates are assembled by overlapping the corrugation hanging portion and the corrugation receiving portion. Further, the shielding plate includes a metal plate and a covering on the indoor side of the same metal plate, and the covering has a heat insulating layer and a heat shielding layer.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the shielding plate described in Patent Document 1 uses a felt-shaped molded product of inorganic fiber as a heat insulating layer. Therefore, the shielding plate has a thickness as a whole, and the corrugation hanging portion and the corrugation receiving portion, which are the overlapping portions of the shielding plates, are configured not to have a heat insulating layer (paragraph 0016 of Patent Document 1). For this reason, the shielding plate described in Patent Document 1 needs to change the shapes of the metal plate and the heat insulating layer, and there is a problem that the manufacturing is troublesome.

[0005] The present invention has been made in view of such circumstances, and an object thereof is to provide a shielding plate that can be made thin and is easy to manufacture.

Means for Solving the Problems

[0006] The shielding plate of embodiment 1 is a shielding plate having a seam-hanging portion at one side end and a seam-receiving portion at the other side end, wherein the shielding plate comprises a metal plate and a shielding layer, and the shielding layer has, in order from the metal plate side, a first adhesive layer, a heat insulating layer made of glass fiber fabric, a second adhesive layer, and a heat shielding layer made of aluminum or titanium.

[0007] The heat insulating layer of the shielding plate in embodiment 2 has a thickness of 0.1 to 0.3 mm. The heat-shielding layer of the shielding plate in embodiment 3 is made of duralumin with a thickness of 3 to 8 μm. The shielding layer of the shielding plate in embodiment 4 has a protective layer on the side opposite to the second adhesive layer of the heat-shielding layer.

[0008] The shielding plate of embodiment 5 has an indoor shielding layer located on the side of the metal plate that is indoors, and an outdoor shielding layer on the side of the metal plate that is outdoors, and the outdoor shielding layer has, in order from the metal plate side, a third adhesive layer and an outdoor heat shielding layer made of aluminum or titanium.

[0009] The aluminum in the outdoor heat-shielding layer of the shielding plate in embodiment 6 is duralumin with a thickness of 3 to 8 μm. [Effects of the Invention]

[0010] The shielding plate of the present invention can be made thinner, making it easier to manufacture. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a perspective view of the folded sheet metal according to this embodiment. [Figure 2] Figure 2 is a schematic cross-sectional view of the corrugated sheet metal of this embodiment. [Figure 3] Figure 3 is a schematic cross-sectional view of an example of a modified corrugated sheet metal in this embodiment. [Figure 4] Figure 4(a) is a schematic cross-sectional view of test plate 1, Figure 4(b) is a schematic cross-sectional view of test plate 2, Figure 4(c) is a schematic cross-sectional view of test plate 3, Figure 4(d) is a schematic cross-sectional view of test plate 4, and Figure 4(e) is a schematic cross-sectional view of test plate 5. [Figure 5] Figure 5 is a schematic plan view of the test apparatus. [Figure 6] Figure 6 shows the end face shape of the corrugated sheet formed in the molding test, and the numbers indicated by the double arrows represent the length of each part. [Modes for carrying out the invention]

[0012] An embodiment of the shielding plate according to the present invention applied to a corrugated roofing plate 10 will be described with reference to Figures 1 and 2. As shown in the perspective view in Figure 1, the corrugated sheet 10 has a constant width (in the left-right direction in Figure 1) and is elongated in the length direction. Such corrugated sheets 10 are used, for example, on the roofs of large buildings such as factories and warehouses. In Figure 1, the top of the corrugated sheet 10 is the outdoor side and the bottom is the indoor side.

[0013] As shown in Figure 1, the end face shape of the corrugated sheet 10 has a bottom portion 11 in the center in the width direction, with inclined portions 12 on both sides in the width direction that slope diagonally upward. At the upper ends of both inclined portions 12, a top portion 13 is formed that is approximately parallel to the bottom portion 11 and extends outward in the width direction. A U-shaped seam fastening portion 14 that opens downward is formed at the side end continuous with the top portion 13 on the left side in the figure. In addition, a U-shaped seam receiving portion 15 that opens to the left (inward in the width direction) is formed at the side end continuous with the top portion 13 on the right side in the figure. The corrugated sheet 10 has this end face shape that is continuous in the length direction. Note that the thickness of the end face shape of the corrugated sheet 10 shown in Figure 1 is exaggerated for illustrative purposes.

[0014] During installation, the corrugated sheets 10 are dropped into place by hooking the seam-hooking portion 14 of one corrugated sheet 10 onto the seam-receiving portion 15 of the installed corrugated sheet 10, and then the seams are fastened using a seam-fastening machine to connect adjacent corrugated sheets 10. The shape of the corrugated sheet 10, including the seam-hooking portion 14 and the seam-receiving portion 15, is a known shape that is interchangeable.

[0015] As shown in Fig. 2, the folded plate 10 includes a metal plate 20 serving as a substrate, an indoor shielding layer 30 located on the indoor side (lower side in Fig. 2) with respect to the metal plate 20, and an outdoor shielding layer 40 located on the outdoor side (upper side in Fig. 2) with respect to the metal plate 20. The folded plate 10 is formed into the shape shown in Fig. 1 by roll-forming the indoor shielding layer 30 and the outdoor shielding layer 40 after forming them on the flat metal plate 20. The folded plate 10 has the indoor shielding layer 30 and the outdoor shielding layer 40 throughout the entire width direction including the wrinkling portion 14 and the wrinkling receiving portion 15.

[0016] A steel plate can be used for the metal plate 20. Also, a galvanized steel plate obtained by plating the surface of the steel plate with zinc, or a galvanized steel plate obtained by plating the surface of the steel plate with aluminum, zinc, and silicon can be used. Further, a colored steel plate obtained by painting the steel plate or the plated steel plate with a general building paint, a urethane-based paint, or a fluorine-based paint can also be used. The thickness of the metal plate 20 is not particularly limited, but a range of 0.5 to 1.5 mm is preferable.

[0017] (Regarding the indoor shielding layer 30) As shown in Fig. 2, the indoor shielding layer 30 is located on the indoor side with respect to the metal plate 20. The indoor shielding layer 30 is a layer aimed at suppressing the inflow heat from the outside to the inside and the outflow heat from the inside to the outside.

[0018] The indoor shielding layer 30 has, in order from the metal plate 20 side, a first adhesive layer 31, an indoor heat insulation layer 32 as a heat insulation layer, a second adhesive layer 33, an indoor heat shielding layer 34 as a heat shielding layer, and an indoor protection layer 35.

[0019] The first adhesive layer 31 is a layer for fixing the metal plate 20 and the indoor heat insulation layer 32 by adhesion. The material that can be used for the first adhesive layer 3(1) may be any material that can adhere the metal plate 20 and the indoor heat insulation layer (32), and adhesives such as rubber and resin can be used. The form may also be liquid, film-like, granular, etc. Also, the thickness of the first adhesive layer 31 is not particularly defined, and it may be located between the metal plate 20 and the indoor heat insulation layer 32 and can fix both by adhesion.

[0020] The indoor insulation layer 32 is a layer designed to reduce heat transfer. Specifically, it prevents heat from entering the building when the outdoor temperature is relatively high, such as in summer, and prevents heat from escaping to the outside when the indoor temperature is relatively high, such as in winter.

[0021] The indoor insulation layer 32 uses a woven fabric made of glass fibers. A woven fabric made of glass fibers is a fabric formed by combining twisted glass fiber threads as warp and weft threads. There are no particular limitations on the weave structure; plain weave, twill weave, satin weave, etc., can be used. The weave structure is not limited to single layer, but can also be double layer. The thickness of the indoor insulation layer 32 is preferably in the range of 0.1 to 0.3 mm. If the thickness is less than 0.1 mm, the insulation effect tends to decrease. Also, if the thickness exceeds 0.3 mm, it becomes difficult to improve the insulation effect by increasing the thickness further.

[0022] The second adhesive layer 33 is a layer for fixing the indoor insulation layer 32 and the indoor heat shielding layer 34 by adhesion. Any material that can be used for the second adhesive layer 33 is acceptable as long as it can bond the indoor insulation layer 32 and the indoor heat shielding layer 34, and adhesives such as rubber and resin can be used. The form is also not limited to liquid, film, or granular. As an example, a film-type thermoplastic synthetic resin adhesive mainly composed of polyethylene terephthalate (PET) or polyethylene (PE) can be used. Furthermore, there is no particular limit to the thickness of the second adhesive layer 33; for example, a film-type adhesive with a thickness of 10 to 30 μm before use can be used.

[0023] The indoor heat-shielding layer 34 is a layer designed to reflect heat. Foil-shaped aluminum or titanium can be used as the indoor heat-shielding layer 34. The aluminum includes not only pure aluminum, but also aluminum alloys mixed with copper, magnesium, silicon, manganese, zinc, nickel, etc., and also duralumin. Among aluminum alloys, aluminum alloys, particularly duralumin specified in the 8000 series in JIS standards, are preferred in terms of strength. For example, alloy numbers 8021 and 8079 specified in JIS H4160-2006 (Aluminum and Aluminum Alloy Foils) are preferred. When using duralumin, a thickness of 3 to 8 μm is preferred. Furthermore, it is preferable that the surface emissivity of the aluminum be 0.10 or less.

[0024] The term "titanium" includes not only pure titanium but also titanium alloys, which are mixtures of titanium with nickel, aluminum, and other elements. Titanium has better corrosion resistance to salt than aluminum, making it effective for use in areas susceptible to seawater.

[0025] The indoor protective layer 35 is a protective layer intended to prevent damage to the indoor heat-shielding layer 34 due to contact with foreign matter. The indoor protective layer 35 only needs to be able to adhere to the indoor heat-shielding layer 34 in a way that covers the indoor side of the indoor heat-shielding layer 34 (the lower side in Figure 2), and the resin film listed as the second adhesive layer 33 can be used. For example, a film mainly made of polyethylene terephthalate (PET), polyethylene (PE), etc. can be used. Furthermore, the indoor protective layer 35 only needs to be able to cover the indoor heat-shielding layer 34 and prevent damage to it, and its thickness is preferably in the range of 5 to 30 μm.

[0026] (Regarding the outdoor shielding layer 40) As shown in Figure 2, the outdoor shielding layer 40 is located on the outdoor side relative to the metal plate 20. The outdoor shielding layer 40 is a layer intended to suppress heat inflow from the outdoors to the indoors and heat outflow from the indoors to the outdoors.

[0027] The outdoor shielding layer 40 has, in order from the metal plate 20 side, a third adhesive layer 41, an outdoor heat shielding layer 42 as a heat shielding layer, and an outdoor protective layer 43. The third adhesive layer 41 is a layer that fixes the metal plate 20 and the outdoor heat shield layer 42 by adhesion. Any material that can bond the metal plate 20 and the outdoor heat shield layer 42 can be used for the third adhesive layer 41, and adhesives such as rubber and resin can be used. The form is also not limited to liquid, film, or granular. As an example, a film-type thermoplastic synthetic resin adhesive mainly composed of polyethylene terephthalate (PET) or polyethylene (PE) can be used. Furthermore, there is no particular limit to the thickness of the third adhesive layer 41; for example, a film-type adhesive with a thickness of 10 to 30 μm before use can be used.

[0028] The outdoor heat shield layer 42 is a layer designed to reflect heat. Foil-shaped aluminum or titanium can be used as the outdoor heat shield layer 42. The aluminum includes not only pure aluminum, but also aluminum alloys mixed with copper, magnesium, silicon, manganese, zinc, nickel, etc., and also duralumin. Among aluminum alloys, aluminum alloys, particularly duralumin specified in the 8000 series in JIS standards, are preferred in terms of strength. For example, alloy numbers 8021 and 8079 specified in JIS H4160-2006 (Aluminum and Aluminum Alloy Foils) are preferred. When using duralumin, a thickness of 3 to 8 μm is preferred. Furthermore, it is preferable that the surface emissivity of the aluminum be 0.10 or less.

[0029] The term "titanium" includes not only pure titanium but also titanium alloys, which are mixtures of titanium with nickel, aluminum, and other elements. The outdoor protective layer 43 is a protective layer intended to prevent damage to the outdoor heat shield layer 42 due to contact with foreign matter. The outdoor protective layer 43 only needs to be able to adhere to the outdoor heat shield layer 42 in a way that covers the outdoor side of the outdoor heat shield layer 42 (the upper side in Figure 2), and the resin film listed as the third adhesive layer 41 can be used. For example, a film mainly made of polyethylene terephthalate (PET), polyethylene (PE), etc. can be used. Furthermore, the outdoor protective layer 43 only needs to be able to cover the outdoor heat shield layer 42 and prevent damage to it, and its thickness is preferably in the range of 5 to 30 μm.

[0030] <Effects and Effects of the Embodiment> The operation and effects of the corrugated sheet metal 10 of this embodiment will be described. (1) The corrugated sheet metal 10 of this embodiment comprises a metal plate 20 and an indoor shielding layer 30. The indoor shielding layer 30 has, in order from the metal plate 20 side, a first adhesive layer 31, an indoor insulation layer 32 made of glass fiber fabric, a second adhesive layer 33, an indoor heat shielding layer 34 made of aluminum or titanium, and an indoor protective layer 35. With this configuration, since the indoor insulation layer 32 is made of glass fiber fabric, the thickness of the corrugated sheet metal 10 can be reduced, and the seam fastening portion 14 and seam receiving portion 15 of the corrugated sheet metal 10 can also remain equipped with the indoor insulation layer 32. For this reason, it is not necessary to reduce the width of the indoor shielding layer 30 or the outdoor shielding layer 40 relative to the width of the corrugated sheet metal 10, making it easier to manufacture the corrugated sheet metal 10.

[0031] (2) The glass fiber fabric that forms the indoor insulation layer 32 has a thickness of 0.1 to 0.3 mm. Therefore, the thickness of the corrugated sheet 10 can be reduced in the same manner as described above. (3) Foil-shaped aluminum or titanium is used as the indoor heat shielding layer 34. In particular, duralumin, which is specified in the 8000 series in the JIS standard, has high strength, so the thickness of the indoor heat shielding layer 34 can be reduced, and furthermore, the thickness of the corrugated sheet 10 can be reduced.

[0032] (4) The indoor shielding layer 30 has an indoor protective layer 35 on the side opposite to the second adhesive layer 33 of the indoor heat shielding layer 34. Therefore, the indoor heat shielding layer 34 is covered and protected by the indoor protective layer 35.

[0033] (5) The corrugated sheet metal 10 is equipped with an outdoor shielding layer 40. The outdoor shielding layer 40 has, in order from the metal sheet metal 20 side, a third adhesive layer 41, an outdoor heat shielding layer 42 made of aluminum or titanium, and an outdoor protective layer 43. As a result, shielding is possible even on the outdoor side of the metal sheet metal 20.

[0034] (6) Foil-shaped aluminum or titanium is used as the outdoor heat shield layer 42. In particular, duralumin, which is specified in the 8000 series in the JIS standard, has high strength, so the thickness of the outdoor heat shield layer 42 can be reduced, and furthermore, the thickness of the corrugated sheet 10 can be reduced.

[0035] (7) The outdoor shielding layer 40 has an outdoor protective layer 43. Therefore, the outdoor heat shielding layer 42 is covered and protected by the outdoor protective layer 43. <Example of changes> This embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0036] The outdoor shielding layer 40 of the corrugated sheet 10 may be omitted, and the corrugated sheet 10 may consist of a metal plate 20 and an indoor shielding layer 30. The indoor shielding layer 30 and the outdoor shielding layer 40 of the corrugated sheet 10 may be swapped between indoor and outdoor configurations. In this case, the corrugated sheet 10 will have a configuration that is an inverted version of Figure 2.

[0037] The indoor shielding layer 30 in the embodiment may be an outdoor shielding layer 130 located outdoors relative to the metal plate 20. That is, as shown in Figure 3, the folded plate 10 comprises a metal plate 20 and an outdoor shielding layer 130 located outdoors with it. The outdoor shielding layer 130 has, in order from the metal plate 20 side, a first adhesive layer 131, an outdoor heat insulation layer 132, a second adhesive layer 133, an outdoor heat shielding layer 134, and an outdoor protective layer 135. The outdoor heat insulation layer 132 is a glass fiber fabric similar to that in the embodiment. The outdoor heat shielding layer 134 is also a foil-like aluminum or titanium similar to that in the embodiment.

[0038] At least one of the following may be omitted: the indoor protective layer 35 of the indoor shielding layer 30, the outdoor protective layer 43 of the outdoor shielding layer 40, and the outdoor protective layer 135 of the outdoor shielding layer 130. In the above embodiment, the shielding plate was applied to the corrugated sheet metal 10 for the roof, but it may also be used for other members having seam fastening portions 14 and seam receiving portions 15, such as square ducts or round ducts (spiral ducts). [Examples]

[0039] The following are specific examples. Temperature test Preparation of test boards A flat metal plate 20 was prepared by galvanizing both sides of a metal sheet (0.6 mm thick) to make a galvanized steel sheet (0.65 mm thick), then coating one side with fluororesin paint (approximately 40 μm thick) and the other side with urethane paint (approximately 10 μm thick).

[0040] A rubber-based adhesive is applied as the first adhesive layer 31 to one side (fluororesin coated side) of the metal plate 20 at a rate of 15 g / m². 2 The adhesive was applied in the specified ratio. Then, on top of the rubber-based adhesive, a glass fiber fabric (thickness 0.15 mm) was laminated as the indoor insulation layer 32, a polyethylene film adhesive (thickness 15 μm) as the second adhesive layer 33, and aluminum foil (thickness 6.5 μm) as the indoor heat shielding layer 34 to form test plate 1. As shown in Figure 4(a), test plate 1 is a corrugated sheet material 16 with a metal plate 20 and an indoor shielding layer 30, with the lower part of the figure representing the indoors and the upper part representing the outdoors. When this corrugated sheet material 16 is roll-formed, it becomes a corrugated sheet 10. The same applies to test plates 2 and below. The indoor and outdoor orientations in the figures are the same in Figures 4(a) to (e).

[0041] Next, the indoor and outdoor orientation of test plate 1 was reversed to create test plate 2. As shown in Figure 4(b), test plate 2 is the same as test plate 1 but with the orientation reversed vertically in the figure. As shown in the figure, test plate 2 is a corrugated sheet metal material 16 comprising a metal plate 20 and an outdoor shielding layer 130.

[0042] Test plate 3 was prepared by laminating a polyethylene film adhesive (15 μm thick) as a third adhesive layer 41 and aluminum foil (6.5 μm thick) as an outdoor heat shielding layer 42 onto the other side (urethane coated side) of test plate 1. Test plate 3 is a corrugated sheet material 16 comprising a metal plate 20, an indoor shielding layer 30, and an outdoor shielding layer 40.

[0043] Only the metal plate 20 used in test plates 1 through 3 was designated as test plate 4 (Figure 4(d)). Test plate 5 was created by applying a heat-shielding coating (GAINA coating from Shinryokusha Co., Ltd.) to both sides of the metal plate 20 used in test plates 1 to 3 (Figure 4(e)). The coating thickness on one side of test plate 5 was 250 μm.

[0044] Test plates 1 through 5 were each cut into rectangular shapes measuring 90 mm x 270 mm. Test apparatus 50 and test method Figure 5 shows a schematic plan view of the test apparatus 50. As shown in the figure, three test plates 52 (test plate 1 to test plate 5) were placed in a line parallel to the electric heater 51, 65 mm away from the front of the 800-watt electric heater 51, with their longer sides oriented vertically (perpendicular to the drawing).

[0045] Furthermore, three steel plates 53 were placed in a row parallel to each test plate 52, 90 mm away from the electric heater 51 (on the back side). Each steel plate 53 was rectangular in shape, the same as the test plate 52. A thermometer 54 was installed on the back of each test plate 52 and each steel plate 53 to measure the back surface temperature.

[0046] Between each test plate 52 of the test apparatus 50 and on the outside of the test plates 52 at both ends, partition plates 55 extending from the electric heater 51 through the test plates 52 to the back of the steel plate 53 were positioned perpendicular to the test plates 52 and steel plate 53 (vertical direction in the figure). These partition plates 55 were the same height as the test plates 52 (270 mm). The top surface from the electric heater 51 through each test plate 52 to the back of the steel plate 53 was also covered with a cover 56, making the space between the electric heater 51 and each test plate 52, and the space between each test plate 52 and each steel plate 53, independent enclosed spaces. In Figure 5, for the sake of explanation, the top surface of the test apparatus 50 is shown as open, but the top surface of the test apparatus 50 is covered with a cover 56, indicated by a dashed line in the figure. The test apparatus 50 is installed on a flat floor surface, and its bottom surface is also covered by the floor surface. For the partition plate 55 and cover 56, aluminum foil laminated on both sides of a steel plate was used. In this test apparatus 50, the electric heater 51 side is considered the outdoors, with the test plate 52 in the center, and the steel plate 53 side considered the indoors.

[0047] Of the three test plates 52 that can be installed in the test apparatus 50, test plate 4 was used at the leftmost position in Figure 5, test plate 5 was used at the rightmost position in Figure 5, and test plate 1 or test plate 3 was swapped in the central test plate 52 to perform three different test patterns.

[0048] Specifically, in Pattern 1, Test Plate 1 was used as the central Test Plate 52. Since the electric heater 51 side is considered the outdoor side and the steel plate 53 side is considered the indoor side, the orientation of Test Plate 1 installed in the test apparatus 50 is as shown in Figure 4(a), meaning the top of the figure is the electric heater 51 side. In Pattern 2, Test Plate 2 was used as the central Test Plate 52 in the orientation shown in Figure 4(b). In Pattern 3, Test Plate 3 was used as the central Test Plate 52 in the orientation shown in Figure 4(c).

[0049] The electric heater 51 of the test apparatus 50 was turned on, and the temperature of the back surface of each test plate 52 and the back surface of each steel plate 53 was measured. The highest temperature while the electric heater 51 was continuously turned on was adopted as the measured temperature.

[0050] The measurement results are shown in Table 1.

[0051] [Table 1] As shown in Table 1, in pattern 1, the radiant heat from the electric heater 51 was largely shielded by the indoor shielding layer 30 of test plate 1, resulting in a higher back surface temperature of test plate 1 compared to test plates 4 and 5 located on either side of it. However, the back surface temperature of the steel plate 53 located 90 mm behind test plate 1 was lower than that of test plates 4 and 5.

[0052] In Pattern 2, the radiant heat from the electric heater 51 was largely shielded by the outdoor shielding layer 130 of the test plate 2, resulting in lower back temperatures for the test plate 2 and the steel plate 53 located 90 mm behind the test plate 2 compared to test plates 4 and 5.

[0053] In Pattern 3, the radiant heat from the electric heater 51 was significantly shielded by the outdoor shielding layer 40 and the indoor shielding layer 30 of the test plate 3. As a result, the back surface temperature of the test plate 3 and the back surface temperature of the steel plate 53 located 90 mm behind the test plate 3 were lower than those of the test plates 4 and 5. Furthermore, the back surface temperature of the test plate 3 and the back surface temperature of the steel plate 53 located 90 mm behind the test plate 3 were lower than the back surface temperatures of the test plate 1 in Pattern 1 and the test plate 2 in Pattern 2, and the back surface temperatures of the steel plates 53 located 90 mm behind them.

[0054] Manufacturing Test Next, we will describe the manufacturing test of the corrugated sheet 10 having a seam-hanging portion 14 and a seam-receiving portion 15.

[0055] The flat sheet metal material 16 used for the corrugated metal sheet, which was previously designated as test plate 2 in a temperature test, was roll-formed to create a corrugated metal sheet 10 with the shape shown in Figure 6. Test plate 2 is a long, flat sheet metal material 16 with a metal plate 20 and an outdoor shielding layer 130, as shown in Figure 4(b), with the upper part being outdoors and the lower part indoors.

[0056] The specific shape of the corrugated sheet 10 to be formed and the lengths of each part are as shown by the double arrows in Figure 6 (unit: mm), which is the shape of the corrugated sheet 10 having the seam fastening portion 14 and seam receiving portion 15 as described in Figure 1. The corrugated sheet material 16 was formed into the corrugated sheet 10 in the shape shown in Figure 6 by roll forming, and a corrugated sheet 10 with an outdoor shielding layer 130 also attached to the seam fastening portion 14 and seam receiving portion 15 was manufactured.

[0057] After manufacturing, the entire surface of the folded sheet 10, including both the front and back surfaces of the seam attachment portion 14 and the seam receiving portion 15, was visually and tactilely inspected, and no wrinkles or peeling were found in the outdoor shielding layer 130. Next, the seam hooking portion 14 of the manufactured corrugated sheet 10 was hooked onto the seam receiving portion 15 of the manufactured corrugated sheet 10, and the two corrugated sheets 10 were connected by fastening the seams with a manual seam fastening machine. The seam hooking portion 14 and the seam receiving portion 15 are also equipped with an outdoor shielding layer 130, and the hooking and seam fastening of both portions could be performed smoothly. Furthermore, even when water was sprayed from above with a hose onto the seam-fastened portion, no water leakage from the seam-fastened portion downwards was observed.

[0058] These results indicate that the corrugated sheet metal 10, which also has an outdoor shielding layer 130 on the seam attachment portion 14 and the seam receiving portion 15, posed no problems in terms of manufacturing or use. [Explanation of Symbols]

[0059] 10... Corrugated sheet metal (shielding plate) 14...Haze-hanging section 15... Goby receiving section 20...Metal plate 30…Indoor shielding layer (shielding layer) 31...First adhesive layer 32…Indoor insulation layer (insulation layer, glass fiber fabric) 33…Second adhesive layer 34…Indoor heat-shielding layer (heat-shielding layer - aluminum or titanium) 35…Indoor protective layer 40...Outdoor shielding layer 41...Third adhesive layer 42…Outdoor heat shielding layer (heat shielding layer - aluminum or titanium) 43…Outdoor protective layer 130...Outdoor shielding layer (shielding layer) 131...First adhesive layer 132…Outdoor insulation layer (insulation layer, glass fiber fabric) 133…Second adhesive layer 134…Outdoor heat shielding layer (heat shielding layer - aluminum or titanium) 135…Outdoor protective layer

Claims

1. A shielding plate having a seam-hanging portion at one side end and a seam-receiving portion at the other side end, The shielding plate comprises a metal plate and a shielding layer. The shielding layer is a shielding plate having, in order from the metal plate side, a first adhesive layer, a heat insulating layer made of glass fiber fabric, a second adhesive layer, and a heat shielding layer made of aluminum or titanium.

2. The shielding plate according to claim 1, wherein the heat insulating layer has a thickness of 0.1 to 0.3 mm.

3. The shielding plate according to claim 1, wherein the heat-shielding layer is made of duralumin with a thickness of 3 to 8 μm.

4. The shielding plate according to claim 1, wherein the shielding layer has a protective layer on the side of the heat-shielding layer opposite to the second adhesive layer.

5. The aforementioned shielding layer is an indoor shielding layer located on the side of the metal plate that is indoors. The shielding plate has an outdoor shielding layer on the side facing the outdoors relative to the metal plate. The shielding plate according to claim 1, wherein the outdoor shielding layer has, in order from the metal plate side, a third adhesive layer and an outdoor heat-shielding layer made of aluminum or titanium.

6. The shielding plate according to claim 5, wherein the outdoor heat shielding layer is made of duralumin with a thickness of 3 to 8 μm.

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