Laminated sheet

Abstract

To provide a laminated sheet excellent in mechanical strength and incombustibility while making the best use of characteristics such as elasticity of rubber.SOLUTION: A laminated sheet includes a laminate including a rubber layer having a first surface and a second surface opposite to the first surface, and a first fiber layer bonded to the first surface, and a first metal layer bonded to one surface of the laminate. The first metal layer is preferably bonded to the first fiber layer, and a first bonding layer is preferably disposed between the first metal layer and the first fiber layer.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to laminated sheets. [Background technology]

[0002] For example, as disclosed in Patent Document 1, a laminated sheet having a laminated structure including a rubber layer is known.

[0003] Patent Document 1 describes a fire-resistant coating material in which, from the surface to the inside, a polyisobutylene rubber sheet, a cloth made of glass fiber or the like, and a mixed material of ceramic fiber and glass fiber are layered in this order. In this fire-resistant coating material, the cloth and the mixed material are each covered with a thin metal film such as aluminum foil. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-336799 Summary of the Invention [Problem to be solved by the invention]

[0005] The fire-resistant coating material described in Patent Document 1 has the problem that it does not have sufficient strength against tearing and the like because it is simply made up of a polyisobutylene rubber sheet, a cloth, and a mixed material that are layered on top of each other.

[0006] In consideration of the above circumstances, an object of the present disclosure is to provide a laminate sheet that is excellent in mechanical strength and non-flammability while making use of properties such as rubber elasticity. [Means for solving the problem]

[0007] In order to solve the above problems, a laminate sheet according to one embodiment of the present disclosure comprises a laminate including a rubber layer having a first surface and a second surface opposite to the first surface, and a first fiber layer adhered to the first surface, and a first metal layer adhered to one surface of the laminate. [Effects of the Invention]

[0008] The present disclosure can provide a laminate sheet that is excellent in mechanical strength and non-flammability while taking advantage of properties such as rubber elasticity. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a cross-sectional view of a laminate sheet according to a first embodiment. [Figure 2] FIG. 4 is a cross-sectional view of a laminate sheet according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings. Note that the dimensions and scale of each part in the drawings may differ from the actual dimensions and are shown schematically to facilitate understanding. Furthermore, the scope of the present disclosure is not limited to these embodiments unless otherwise specified in the following description to the effect that the present disclosure is limited.

[0011] 1. First embodiment FIG. 1 is a cross-sectional view of a laminate sheet 1 according to a first embodiment. The laminate sheet 1 is a sheet-like laminate having properties such as rubber elasticity and non-combustibility. Because the laminate sheet 1 has excellent non-combustibility while taking advantage of properties such as rubber elasticity, it can be suitably used, for example, as a back sheet, which is a sheet member that forms the back surface of a solar cell module. Note that the uses of the laminate sheet 1 are not limited to the above-mentioned examples, and it may also be used, for example, as a component of various products such as building materials, automobiles, construction machinery, home appliances, and outdoor equipment.

[0012] As shown in FIG. 1, the laminate sheet 1 includes a laminate 10, a first adhesive layer 31, and a first metal layer 41. The laminate 10 includes a rubber layer 11 and a first fiber layer 21. Therefore, it can also be said that the laminate sheet 1 includes the rubber layer 11, the first fiber layer 21, the first adhesive layer 31, and the first metal layer 41. These are laminated in the following order: rubber layer 11, first fiber layer 21, first adhesive layer 31, first metal layer 41. Each layer that makes up the laminate sheet 1 will be described below in order.

[0013] The rubber layer 11 is a sheet-like member made of a rubber composition containing rubber. As the rubber contained in the rubber composition that makes up the rubber layer 11, a rubber with excellent flame resistance is preferably used, and for example, a silicone-based rubber such as a flame-retardant silicone rubber is preferably used.

[0014] By making the rubber layer 11 out of silicone rubber, it is possible to make the rubber layer 11 excellent in fire resistance while taking advantage of the properties of rubber such as elasticity in the rubber layer 11. More specifically, by using silicone rubber, it is possible to keep the heat generation amount of the laminated sheet 1 below a specified value for fire resistance certification, and to improve the shape retention of the laminated sheet 1 by suppressing thermal decomposition of the rubber layer 11.

[0015] In addition to rubber, the rubber composition constituting the rubber layer 11 may contain a crosslinking agent, a crosslinking aid, or other additives as needed. The rubber composition may also contain fillers such as carbon black, metal powder, or silica powder, or may also contain fibers such as glass fiber. However, when the rubber composition contains such fillers or fibers, the content of the fillers or fibers in the rubber composition is preferably at a level that ensures the elasticity of the rubber layer 11. The rubber layer 11 may be a foam, but is preferably a dense body from the viewpoints of improving both the uniformity of the surface pressure against load on the laminate sheet 1 and the gas barrier properties of the laminate sheet 1.

[0016] The thickness Ta of the rubber layer 11 is not particularly limited, but is preferably 0.1 mm or more and 2 mm or less, and more preferably 0.3 mm or more and 1 mm or less. This allows the rubber layer 11 to optimally exhibit the rubber characteristics required. On the other hand, if the thickness Ta is too thin, it may be difficult for the rubber layer 11 to fully exhibit the rubber characteristics required, depending on the type of rubber composition that constitutes the rubber layer 11. On the other hand, if the thickness Ta is too thick, if the first metal layer 41 is damaged for some reason, the heat generation value of the laminate sheet 1 will exceed the specified value for non-combustible certification.

[0017] The rubber layer 11 has a first surface F1 and a second surface F2 opposite to the first surface F1. A first fiber layer 21 is bonded to the first surface F1. The rubber layer 11 and the first fiber layer 21 may be bonded together using an adhesive, but preferably by vulcanization bonding using the rubber layer 11. In this case, at least a portion of the first fiber layer 21 in the thickness direction is integrated with the rubber layer 11.

[0018] By bonding the first fiber layer 21 to the rubber layer 11 by vulcanization bonding in this manner, there is an advantage that the adhesive strength between the rubber layer 11 and the first fiber layer 21 can be easily increased compared to an embodiment using a coating type adhesive. In addition, by bonding the rubber layer 11 and the first fiber layer 21 together when molding the rubber layer 11, the manufacturing process of the laminated sheet 1 can be simplified. Note that when the rubber layer 11 and the first fiber layer 21 are bonded together by an adhesive without vulcanization bonding, the adhesive may be the same as that used for the first adhesive layer 31, or may be an adhesive separate from the first adhesive layer 31.

[0019] The first fiber layer 21 is a sheet-like member made of fibers, and may be a woven fabric or a nonwoven fabric. However, when the first fiber layer 21 is a woven fabric, it has the advantage that the mechanical strength of the laminated sheet 1 can be easily increased compared to an embodiment using a nonwoven fabric. Furthermore, the fibers constituting the first fiber layer 21 are preferably inorganic fibers such as glass fibers or carbon fibers.

[0020] By using inorganic fibers for the first fiber layer 21, the mechanical strength of the laminate 10 can be increased compared to an embodiment using organic fibers. The fibers that make up the first fiber layer 21 are not limited to inorganic fibers, and may be organic fibers made of resins such as polyester, nylon, aramid, vinylon, and urethane. The fibers that make up the first fiber layer 21 may also be a combination of inorganic and organic fibers. From the perspective of suitably increasing the mechanical strength of the laminate sheet 1, the fibers that make up the first fiber layer 21 are preferably made of long fibers.

[0021] The thickness Tb1 of the first fiber layer 21 is not particularly limited, but is preferably, for example, 0.05 mm or more and 0.5 mm or less. This allows the first fiber layer 21 to preferably improve the mechanical strength of the laminate sheet 1. On the other hand, if the thickness Tb1 is too thin, it may be difficult to fully improve the mechanical strength of the laminate sheet 1 due to the first fiber layer 21, depending on the type of fiber constituting the first fiber layer 21. On the other hand, if the thickness Tb1 is too thick, it may be difficult to fully utilize the properties of the rubber layer 11, such as elasticity, depending on the type of fiber constituting the first fiber layer 21.

[0022] Here, the thickness Tb1 of the first fiber layer 21 is preferably thinner than the thickness Ta of the rubber layer 11. In other words, the thickness Ta of the rubber layer 11 is preferably thicker than the thickness Tb1 of the first fiber layer 21. This has the advantage that the properties of the rubber layer 11, such as elasticity, can be more easily utilized.

[0023] A first metal layer 41 is bonded to the above-described first fiber layer 21 via a first adhesive layer 31. In this way, the first metal layer 41 is bonded to one surface of the laminate 10.

[0024] By bonding the first metal layer 41 to the first fiber layer 21 in this manner, the distance between the first metal layer 41 and the rubber layer 11 can be made larger than in an embodiment in which the first metal layer 41 is bonded to the rubber layer 11. Therefore, by using the first metal layer 41 as a surface layer, damage to the rubber layer 11 due to heat can be reduced. Furthermore, the first fiber layer 21 functions as a heat insulating layer between the first metal layer 41 and the rubber layer 11, which also reduces damage to the rubber layer 11 due to heat.

[0025] The first adhesive layer 31 is a layer made of an adhesive. The adhesive that makes up the first adhesive layer 31 is not particularly limited as long as it has adhesive properties to the first fiber layer 21 and the first metal layer 41, and examples thereof include epoxy-based adhesives, acrylic-based adhesives, urethane-based adhesives, silicone-based adhesives, olefin-based adhesives, and rubber-based adhesives. Among these, an adhesive with excellent non-flammability is preferably used as the adhesive that makes up the first adhesive layer 31, and it is preferable to use a flame-retardant adhesive such as an epoxy-based adhesive containing an inorganic filler.

[0026] In this way, by placing the first adhesive layer 31 between the first metal layer 41 and the first fiber layer 21, the first fiber layer 21 and the first metal layer 41 can be properly bonded to the first adhesive layer 31 using a bonding method different from that used to bond the rubber layer 11 and the first fiber layer 21.

[0027] The thickness Tc1 of the first adhesive layer 31 is not particularly limited, but is preferably, for example, 10 μm or more and 100 μm or less. This allows the first fiber layer 21 and the first metal layer 41 to be bonded together in an appropriate manner. On the other hand, if the thickness Tc1 is too thin, it may be difficult to obtain sufficient adhesive strength between the first fiber layer 21 and the first metal layer 41, depending on the type of the first fiber layer 21. On the other hand, if the thickness Tc1 is too thick, it may be difficult to utilize the properties of the rubber layer 11, such as elasticity, depending on the type of adhesive that constitutes the first adhesive layer 31.

[0028] The first metal layer 41 is a sheet-like member made of metal. The metal constituting the first metal layer 41 is not particularly limited, but examples thereof include various metals such as iron, nickel, stainless steel, copper, brass, aluminum, and titanium, or alloys containing these metals. Among these, the metal constituting the first metal layer 41 is preferably aluminum or an aluminum alloy.

[0029] By forming first metal layer 41 from aluminum or an aluminum alloy, it is possible to easily obtain a sheet to be used as the metal layer while ensuring the mechanical strength of first metal layer 41.

[0030] The thickness Td1 of the first metal layer 41 is not particularly limited, but is preferably, for example, 10 μm or more and 100 μm or less. This allows the laminate sheet 1 to have excellent flame retardancy. On the other hand, if the thickness Td1 is too thin, the first metal layer 41 may be prone to tearing, depending on the material constituting the first metal layer 41. On the other hand, if the thickness Td1 is too thick, it may be difficult to utilize the properties of the rubber layer 11, such as elasticity.

[0031] In the above laminate sheet 1, the first fiber layer 21 is bonded to the first surface F1 of the rubber layer 11, which makes it possible to enhance the mechanical strength of the laminate 10 while taking advantage of the properties of rubber, such as elasticity, in the rubber layer 11. Furthermore, the first metal layer 41 is bonded to one surface of the laminate 10, which makes it possible to reinforce the metal layer with the laminate 10 and to provide the laminate sheet 1 with excellent fire resistance. From the above, it is possible to provide a laminate sheet 1 that has excellent mechanical strength and fire resistance while taking advantage of the properties of rubber, such as elasticity.

[0032] Furthermore, in the laminate sheet 1, the rubber layer 11 ensures electrical insulation in the thickness direction of the laminate sheet 1, while the first metal layer 41 ensures conductivity on the surface of the laminate sheet 1. Furthermore, the first fiber layer 21 increases the strength of the laminate sheet 1 against tearing and other damage. The first metal layer 41 also improves the fire resistance of the laminate sheet 1 and can suppress fire spread, water vapor permeation, and gas permeation. Furthermore, the rubber layer 11, the first fiber layer 21, and the first metal layer 41 can suppress bending deformation of the laminate sheet 1 due to heat, compared to an embodiment in which one of the first fiber layer 21 and the first metal layer 41 is omitted.

[0033] Furthermore, in the laminate sheet 1, the total calorific value measured by a cone calorimeter test with the first metal layer 41 as the surface layer is 1 MJ / m 2 This makes it possible to provide a laminate sheet 1 that can be suitably used as a building material, etc. The cone calorimeter test is carried out in accordance with ISO5660-1:2002.

[0034] For example, when the rubber layer 11 is a 0.5 mm thick rubber sheet made of silicone rubber, the first fiber layer 21 is a 0.1 mm thick glass fiber sheet, the first adhesive layer 31 is a 50 μm thick layer made of an epoxy adhesive, and the first metal layer 41 is an aluminum foil with a thickness of 150 μm, a cone calorimeter test was conducted on the laminate sheet 1 with the first metal layer 41 as the surface layer, and the total calorific value was 0.11 MJ / m 2 Generally, the standard for obtaining non-combustible certification is 8MJ / m 2 The following is the result.

[0035] In contrast, a laminated sheet of a reference example was prepared in the same manner as described above, except that the first metal layer 41 was omitted. When the laminated sheet was subjected to a cone calorimeter test, the total calorific value was 2.15 MJ / m 2 It was.

[0036] Thus, the laminate sheet 1 can significantly reduce the total heat generation amount compared to the laminate sheet of the reference example.

[0037] 2. Second embodiment The second embodiment of the present disclosure will be described below, and the description of the same matters as those in the first embodiment will be omitted as appropriate.

[0038] 2 is a cross-sectional view of a laminate sheet 1A according to the second embodiment. The laminate sheet 1A has a laminate 10A instead of the laminate 10, and is configured similarly to the laminate sheet 1 of the first embodiment, except that a second adhesive layer 32 and a second metal layer 42 are added.

[0039] The laminate 10A is configured similarly to the laminate 10 of the first embodiment, except for the addition of the second fiber layer 22. Therefore, the laminate sheet 1A is configured similarly to the laminate sheet 1 of the first embodiment, except for the addition of the second fiber layer 22, the second adhesive layer 32, and the second metal layer 42.

[0040] Here, the second fiber layer 22 is adhered to the second surface F2 of the rubber layer 11. The rubber layer 11 and the second fiber layer 22 may be adhered to each other by an adhesive, but preferably by vulcanization adhesion using the rubber layer 11. In this case, at least a portion of the second fiber layer 22 in the thickness direction is integrated with the rubber layer 11. Note that the method for adhering the rubber layer 11 and the second fiber layer 22 may be different from the method for adhering the rubber layer 11 and the first fiber layer 21, but from the viewpoints of minimizing the difference in properties between the front and back of the laminate sheet 1A and simplifying the manufacturing process of the laminate sheet 1A, it is preferable that the method be the same as the method for adhering the rubber layer 11 and the first fiber layer 21.

[0041] 2, the laminated sheet 1A includes a rubber layer 11, a first fiber layer 21, a first adhesive layer 31, a first metal layer 41, a second fiber layer 22, a second adhesive layer 32, and a second metal layer 42. These are laminated in the following order: second metal layer 42, second adhesive layer 32, second fiber layer 22, rubber layer 11, first fiber layer 21, first adhesive layer 31, and first metal layer 41.

[0042] The second fiber layer 22 is a sheet-like member made of fibers, and may be a woven fabric or a nonwoven fabric. When the second fiber layer 22 is a woven fabric, it has the advantage that the mechanical strength of the laminated sheet 1A can be easily increased compared to an embodiment using a nonwoven fabric. In addition, the fibers constituting the second fiber layer 22 are preferably inorganic fibers such as glass fibers or carbon fibers.

[0043] The second fiber layer 22 is made of inorganic fibers, which increases the mechanical strength of the laminate 10A compared to an embodiment using organic fibers. The fibers constituting the second fiber layer 22 are not limited to inorganic fibers, and may be organic fibers made of resins such as polyester, nylon, aramid, vinylon, and urethane. The fibers constituting the second fiber layer 22 may also be a combination of inorganic and organic fibers.

[0044] The fibers constituting the second fiber layer 22 may be different from the fibers constituting the first fiber layer 21, but it is preferable that they are the same as the fibers constituting the first fiber layer 21, from the viewpoint of reducing the cost of the laminated sheet 1A and reducing the difference in characteristics between the front and back of the laminated sheet 1A.

[0045] The thickness Tb2 of the second fiber layer 22 is not particularly limited, but is preferably, for example, 0.05 mm or more and 0.5 mm or less. This allows the second fiber layer 22 to effectively improve the mechanical strength of the laminate sheet 1A. On the other hand, if the thickness Tb2 is too thin, it may be difficult to fully improve the mechanical strength of the laminate sheet 1A due to the second fiber layer 22, depending on the type of fiber constituting the second fiber layer 22. On the other hand, if the thickness Tb2 is too thick, it may be difficult to fully utilize the properties of the rubber layer 11, such as elasticity, depending on the type of fiber constituting the second fiber layer 22.

[0046] Here, the thickness Tb2 of the second fiber layer 22 is preferably thinner than the thickness Ta of the rubber layer 11. In other words, the thickness Ta of the rubber layer 11 is preferably thicker than the thickness Tb2 of the second fiber layer 22. This has the advantage of making it easier to utilize the properties of the rubber layer 11, such as elasticity. Note that the thickness Tb2 of the second fiber layer 22 may be different from the thickness Tb1 of the first fiber layer 21, but is preferably the same as the thickness Tb1 of the first fiber layer 21 from the viewpoint of minimizing the difference in properties between the front and back of the laminate sheet 1A.

[0047] A second metal layer 42 is bonded to the second fiber layer 22 via a second adhesive layer 32. In this way, the second metal layer 42 is bonded to one surface of the laminate 10A.

[0048] In this way, by bonding the second metal layer 42 to the second fiber layer 22, it is possible to eliminate the distinction between the front and back of the laminated sheet 1A, which makes it easier to install the laminated sheet 1A and broadens the range of uses for the laminated sheet 1A.

[0049] The second adhesive layer 32 is a layer formed of an adhesive. The adhesive that forms the second adhesive layer 32 is not particularly limited as long as it has adhesive properties to the second fiber layer 22 and the second metal layer 42, and examples thereof include epoxy-based adhesives, acrylic-based adhesives, urethane-based adhesives, silicone-based adhesives, olefin-based adhesives, and rubber-based adhesives. Among these, an adhesive with excellent non-flammability is preferably used as the adhesive that forms the second adhesive layer 32, and it is preferable to use a flame-retardant adhesive such as an epoxy-based adhesive containing an inorganic filler.

[0050] In this way, by placing the second adhesive layer 32 between the second metal layer 42 and the second fiber layer 22, the second fiber layer 22 and the second metal layer 42 can be properly bonded to the second adhesive layer 32 using a bonding method different from that used to bond the rubber layer 11 and the second fiber layer 22.

[0051] The adhesive constituting the second adhesive layer 32 may be different from the adhesive constituting the first adhesive layer 31, but it is preferable that it be the same as the adhesive constituting the first adhesive layer 31, from the viewpoint of reducing the cost of the laminated sheet 1A and reducing the difference in characteristics between the front and back of the laminated sheet 1A.

[0052] The thickness Tc2 of the second adhesive layer 32 is not particularly limited, but is preferably, for example, 10 μm or more and 100 μm or less. This allows the second fiber layer 22 and the second metal layer 42 to be bonded together properly. On the other hand, if the thickness Tc2 is too thin, it may be difficult to obtain sufficient adhesive strength between the second fiber layer 22 and the second metal layer 42, depending on the type of the second fiber layer 22. On the other hand, if the thickness Tc2 is too thick, it may be difficult to utilize the properties of the rubber layer 11, such as elasticity, depending on the type of adhesive that constitutes the second adhesive layer 32.

[0053] The thickness Tc2 of the second adhesive layer 32 may be different from the thickness Tc1 of the first adhesive layer 31, but from the viewpoint of minimizing the difference in characteristics between the front and back of the laminated sheet 1A, it is preferable that it be the same as the thickness Tc1 of the first adhesive layer 31.

[0054] The second metal layer 42 is a sheet-like member made of metal. The metal constituting the second metal layer 42 is not particularly limited, but examples thereof include various metals such as iron, nickel, stainless steel, copper, brass, aluminum, and titanium, or alloys containing these metals. Among these, the metal constituting the second metal layer 42 is preferably aluminum or an aluminum alloy.

[0055] By forming the second metal layer 42 from aluminum or an aluminum alloy, it is possible to easily obtain a sheet to be used as the metal layer while ensuring the mechanical strength of the second metal layer 42.

[0056] The metal constituting the second metal layer 42 may be different from the metal constituting the first metal layer 41, but it is preferable that it be the same as the adhesive constituting the first metal layer 41, from the standpoint of reducing the cost of the laminated sheet 1A and reducing the difference in characteristics between the front and back of the laminated sheet 1A.

[0057] The thickness Td2 of the second metal layer 42 is not particularly limited, but is preferably, for example, 10 μm or more and 100 μm or less. This allows the laminate sheet 1A to have excellent flame retardancy. On the other hand, if the thickness Td2 is too thin, the second metal layer 42 may be prone to tearing, depending on the material constituting the second metal layer 42. On the other hand, if the thickness Td2 is too thick, it may be difficult to utilize the properties of the rubber layer 11, such as elasticity.

[0058] According to the second embodiment described above, it is also possible to provide a laminate sheet 1A that is excellent in mechanical strength and non-combustibility while making use of properties such as elasticity of rubber.

[0059] 3. Variations The above-described embodiments can be modified in various ways. Specific modifications that can be applied to the above-described embodiments are exemplified below. Two or more embodiments arbitrarily selected from the following examples can be combined as appropriate within the scope of not mutually contradictory.

[0060] 3-1. Variation 1 In the first embodiment described above, an example is given in which the first metal layer 41 is bonded to the first fiber layer 21, but this is not limiting, and the first metal layer 41 may be bonded to the rubber layer 11. In this case, the first metal layer 41 and the rubber layer 11 may be bonded together using an adhesive or by vulcanization bonding of the rubber layer 11. In this case, the first adhesive layer 31 may be omitted.

[0061] 3-2. Variation 2 In the first and second embodiments described above, an example in which the first adhesive layer 31 is used is illustrated, but the present invention is not limited to this example, and for example, there may be substantially no adhesive layer between the first fiber layer 21 and the first metal layer 41. In this case, for example, the first fiber layer 21 and the first metal layer 41 are bonded together by the adhesive impregnated in the first fiber layer 21.

[0062] Similarly, in the second embodiment described above, an example in which the second adhesive layer 32 is used is illustrated, but the present invention is not limited to this example, and for example, there may be substantially no adhesive layer between the second fiber layer 22 and the second metal layer 42. In this case, for example, the second fiber layer 22 and the second metal layer 42 are bonded together by the adhesive impregnated in the second fiber layer 22.

[0063] 4. Notes For example, the following aspects can be understood from the above embodiment and modified examples.

[0064] (Appendix 1) A first embodiment, which is a preferred example of the laminate sheet of the present disclosure, comprises a laminate including a rubber layer having a first surface and a second surface opposite the first surface, and a first fiber layer adhered to the first surface, and a first metal layer adhered to one surface of the laminate.

[0065] In the above embodiment, the first fiber layer is bonded to the first surface of the rubber layer, thereby enhancing the mechanical strength of the laminate while utilizing the properties of rubber, such as elasticity, in the rubber layer. Furthermore, the first metal layer is bonded to one surface of the laminate, thereby reinforcing the first metal layer with the laminate and providing excellent flame retardancy for the laminate sheet. From the above, it is possible to provide a laminate sheet that is excellent in mechanical strength and flame retardancy while utilizing the properties of rubber, such as elasticity.

[0066] (Note 2) In a second embodiment, which is a preferred example of the first embodiment, the first metal layer is bonded to the first fiber layer. In this embodiment, the distance between the first metal layer and the rubber layer can be increased compared to the embodiment in which the first metal layer is bonded to the rubber layer. Therefore, by using the first metal layer as a surface layer, damage to the rubber layer due to heat can be reduced. Furthermore, the first fiber layer functions as a heat insulating layer between the first metal layer and the rubber layer, which also reduces damage to the rubber layer due to heat.

[0067] (Note 3) In a third aspect, which is a preferred example of the second aspect, a first adhesive layer is further provided between the first metal layer and the first fiber layer. In the above aspect, the first fiber layer and the first metal layer can be appropriately bonded by the first adhesive layer using a bonding method different from that used to bond the rubber layer and the first fiber layer.

[0068] (Appendix 4) In a fourth aspect, which is a preferred example of the second or third aspect, a second metal layer is further provided, and the laminate further includes a second fiber layer adhered to the second surface, and the second metal layer is adhered to the second fiber layer. In the above aspect, it is possible to eliminate the distinction between the front and back of the laminate sheet. As a result, the installation of the laminate sheet becomes easier and the range of uses for the laminate sheet becomes wider.

[0069] (Note 5) In a fifth aspect, which is a preferred example of the fourth aspect, a second adhesive layer is further provided between the second metal layer and the second fiber layer. In the above-mentioned aspect, the second fiber layer and the second metal layer can be appropriately bonded by the second adhesive layer using a bonding method different from that used to bond the rubber layer and the second fiber layer.

[0070] (Supplementary Note 6) In a sixth aspect, which is a preferred example of any of the first to fifth aspects, the rubber layer is made of silicone rubber. In this aspect, the rubber layer can be made excellent in fire resistance while taking advantage of the properties of rubber, such as elasticity.

[0071] (Supplementary Note 7) In a seventh aspect, which is a preferred example of any one of the first to sixth aspects, the first fiber layer is made of inorganic fibers. In this aspect, the mechanical strength of the laminate can be increased compared to aspects using organic fibers.

[0072] (Note 8) In an eighth aspect, which is a preferred example of any one of the first to seventh aspects, the first fiber layer is bonded to the rubber layer by vulcanization adhesion. This aspect has the advantage that the adhesive strength between the rubber layer and the first fiber layer can be easily increased compared to aspects using a coating type adhesive. Furthermore, by bonding the rubber layer and the first fiber layer together when forming the rubber layer, the manufacturing process of the laminated sheet can be simplified.

[0073] (Supplementary Note 9) In a ninth aspect, which is a preferred example of any of the first to eighth aspects, the first metal layer is made of aluminum or an aluminum alloy. In this aspect, it is possible to achieve both ease of obtaining a sheet used as the metal layer and ensuring the mechanical strength of the first metal layer.

[0074] (Appendix 10) In a tenth aspect, which is a preferred example of any one of the first to ninth aspects, the rubber layer is thicker than the first fiber layer. This aspect has the advantage that it is easy to utilize the properties of the rubber layer, such as elasticity.

[0075] (Appendix 11) In the eleventh embodiment, which is a suitable example of any one of the first to tenth embodiments, the total calorific value measured by a cone calorimeter test with the first metal layer as a surface layer is 1 MJ / m 2 The above-described aspects can provide a laminate sheet that can be suitably used as a building material or the like. [Explanation of symbols]

[0076] 1...laminated sheet, 1A...laminated sheet, 10...laminated body, 10A...laminated body, 11...rubber layer, 21...first fiber layer, 22...second fiber layer, 31...first adhesive layer, 32...second adhesive layer, 41...first metal layer, 42...second metal layer, F1...first surface, F2...second surface, Ta...thickness, Tb1...thickness, Tb2...thickness, Tc1...thickness, Tc2...thickness, Td1...thickness, Td2...thickness.

Claims

1. a laminate including a rubber layer having a first surface and a second surface opposite to the first surface, and a first fiber layer bonded to the first surface; a first metal layer adhered to one surface of the laminate; Laminated sheet.

2. the first metal layer is bonded to the first fiber layer; The laminate sheet according to claim 1 .

3. further comprising a first adhesive layer disposed between the first metal layer and the first fiber layer. The laminate sheet according to claim 2 .

4. Further comprising a second metal layer; the laminate further includes a second fibrous layer adhered to the second surface; the second metal layer is bonded to the second fiber layer; The laminate sheet according to claim 2 .

5. a second adhesive layer disposed between the second metal layer and the second fiber layer; The laminate sheet according to claim 4.

6. The rubber layer is made of silicone rubber. The laminate sheet according to claim 1 .

7. The first fiber layer is composed of inorganic fibers. The laminate sheet according to claim 1 .

8. the first fiber layer is bonded to the rubber layer by vulcanization bonding; The laminate sheet according to claim 1 .

9. The first metal layer is made of aluminum or an aluminum alloy. The laminate sheet according to claim 1 .

10. The rubber layer has a thickness greater than that of the first fiber layer. The laminate sheet according to claim 1 .

11. The total calorific value measured by a cone calorimeter test with the first metal layer as the surface layer is 1 MJ / m ２ Below is the The laminate sheet according to claim 1 .

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