Integrated composite roof

Abstract

The utility model discloses an integrated composite roof belongs to the field of construction engineering. Including metal layer panel, be provided with the wave crest on metal layer panel, be provided with the connecting block on metal layer panel, two vertical grooves are passed through and are set up on the connecting block, and the connecting block is connected with metal layer panel sliding, and a plurality of vertical blocks that can be inserted into vertical groove are fixedly connected on metal layer panel, two opposite connecting clamping slots are passed through and are set up on the connecting block, and a plurality of spacing block that can be inserted into the connecting clamping slot are fixedly connected on metal layer panel, the utility model utilizes the connecting block to complete the butt joint between two metal layer panels, does not need to use bolt to punch the hole to metal layer panel in butt joint process, also does not need bolt to pass through metal layer panel and fixes, and then avoids the phenomenon that metal layer panel occurs and leaks after long -time use bolt corrosion causes, thereby increases the practicality of integrated composite roof.

Description

Technical Field

[0001] This utility model relates to an integrated composite roof, belonging to the field of building engineering technology. Background Technology

[0002] The roof refers to the surface of the roof. Roofing panels are laid on the roof surface to increase the roof's protective performance. When installing existing roofing panels, the traditional connection structure mostly uses bolts to fix the roofing panels together. The use of bolts to connect the roof requires drilling holes in the roofing panels, which will damage the integrity of the metal coating. Long-term exposure to a humid environment can easily cause rust, leading to failure of the seal at the joint and easy leakage.

[0003] Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an integrated composite roof, which solves the problem that in the existing technology, the traditional connection structure for connecting and fixing roof panels mostly uses bolts to achieve the connection between roof panels. The use of bolts to connect the roof requires drilling holes in the roof panels, which will damage the integrity of the metal coating. Long-term exposure to a humid environment will easily cause corrosion, leading to the failure of the seal at the connection and easy leakage.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution: an integrated composite roof, including a metal layer panel, the metal layer panel is provided with crests, a connecting block is provided on the metal layer panel, two vertical grooves are opened through the connecting block, the connecting block is slidably connected to the metal layer panel, a plurality of vertical blocks that can be inserted into the vertical grooves are fixedly connected to the metal layer panel, two oppositely arranged connecting slots are opened through the connecting block, a plurality of limiting blocks that can be inserted into the connecting slots are fixedly connected to the metal layer panel, a stabilizing mechanism is provided on the connecting block, the stabilizing mechanism is used to increase the stability when the two metal layer panels are connected, and a reinforcing mechanism is provided on the metal layer panel, the reinforcing mechanism is used to increase the strength when the connecting block connects the two metal layer panels.

[0006] By adopting the above technical solution, during use, two metal panels are abutted together, and the limiting block passes through the connecting groove on the connecting block. Because the limiting block is "G"-shaped, it connects the two metal panels, preventing them from separating. As the limiting block passes through the connecting groove, it aligns the vertical groove with the vertical block, and the vertical block passes through the vertical groove. This increases the connection strength between the two metal panels, enhancing their load-bearing capacity. Furthermore, the movement of the limiting block through the connecting groove and the vertical block through the vertical groove causes the stabilizing mechanism to pass through the connecting block, further increasing the connection strength between the two metal panels. This improves the stability of the connection between the two metal panels and eliminates the need for bolts to drill holes or penetrate the metal panels for fixation. This avoids bolt corrosion and leakage caused by prolonged use, thus increasing the practicality of the integrated composite roof.

[0007] The present invention is further configured such that: the reinforcing mechanism includes a plurality of reinforcing inclined plates fixedly connected to the metal panel and arranged at an inclination, and a sliding column is fixedly connected to the end of the reinforcing inclined plate away from the metal panel, and the sliding column can abut against one side of the connecting block.

[0008] By adopting the above technical solution, when the limiting block passes through the connecting slot on the connecting block, the sliding columns on both sides of the connecting block abut against the left and right sides of the connecting block. The two sliding columns have a reinforcing effect on the connecting block, preventing the connecting block from deforming when the two metal panels are under load. This improves the stability and load-bearing capacity of the connecting block after the two metal panels are joined together, thereby increasing the strength of the integrated composite roof.

[0009] The present invention is further configured such that: the stabilizing mechanism includes an inner limiting groove that is opened through the connecting block and communicates with the connecting slot; a fixed locking block that can be inserted into the inner limiting groove is fixedly connected to the end of the limiting block away from the metal layer panel; a stabilizing groove is opened through the inner wall of the vertical groove near the reinforcing inclined plate; a stabilizing block that can be inserted into the stabilizing groove is fixedly connected to the vertical block; and a sealing mechanism is provided on the connecting block for sealing when the connecting block is connected to the metal layer panel.

[0010] By adopting the above technical solution, when the limiting card block is inserted into the connecting card slot on the connecting block, the inner limiting slot is simultaneously aligned with the fixed card block, and the fixed card block is slidably inserted into the inner limiting slot. The insertion of the fixed card block into the inner limiting slot can increase the connection between the connecting block and the metal layer panel. Furthermore, because the diameter of the fixed card block is much larger than the width of the limiting card block, the sliding connection between the fixed card block and the inner limiting slot can further improve the connection strength between the connecting block and the metal layer panel, and increase the load-bearing capacity after the two metal layer panels are joined together.

[0011] Furthermore, the slidable connection between the stabilizing groove and the stabilizing block can increase the connection strength between the connecting block and the metal layer panel, and increase the contact area between the connecting block and the metal layer panel, making the connecting block more stable when connecting two metal layer panels.

[0012] The present invention is further configured such that: the sealing mechanism includes a sealing slider fixedly connected to the metal layer panel; a sealing groove is opened through the side of the connecting block near the metal layer panel and is slidably connected to the sealing slider; multiple rubber strips are fixedly connected to the inner wall of the sealing groove; and two sealing strips are fixedly connected to the connecting block, and the two sealing strips can abut against the metal layer panel.

[0013] By adopting the above technical solution, when the connecting block mates with two metal panels, the lower surface of the connecting block is in contact with the upper surface of the metal panel, and the sealing slider is inserted into the sealing groove. The sliding connection between the sealing slider and the sealing groove increases the contact area between the metal panel and the connecting block, improving the sealing performance between them. Furthermore, the rubber strip positioned between the sealing groove and the sealing slider enhances the seal between them, further improving the sealing performance between the metal panel and the connecting block, and consequently, improving the sealing when the two metal panels are joined, and ultimately enhancing the overall sealing performance of the integrated composite roof. The sealing strip is made of rubber, and when the connecting block mates with two metal panels, the sealing strip abuts against the upper surface of the metal panel. At this time, the sealing strip provides a certain degree of sealing between the connecting block and the metal panel, thereby improving the sealing performance of the joint between the two metal panels.

[0014] The present invention is further configured as follows: a fixing plate is fixedly connected to the metal panel, a positioning plate is fixedly connected to the fixing plate, the positioning plate is slidably connected to the connecting block, a connecting plate is fixedly connected to the metal panel, a fixing block is fixedly connected to the connecting plate, the fixing block is fixedly connected to the metal panel, a slot is provided on the fixing block, a threaded hole is provided through the positioning plate, a positioning hole is provided on the connecting block, a fixing bolt is threadedly connected to the threaded hole, and the end of the fixing bolt is inserted into the positioning hole.

[0015] By adopting the above technical solution, when all the limiting blocks are inserted into the connecting slots using the connecting block, one end of the connecting block is slidably inserted into the slot, and then the fixing bolt is rotated so that the fixing bolt is inserted into the positioning hole on the connecting block, thereby fixing the connecting block and completing the docking work between the two metal layer panels. The docking is convenient and quick, the operation is simple, and the docking efficiency is high. Moreover, there is no need to drill holes in the metal layer panels during the docking process, thus avoiding the leakage problem that is easily caused by the traditional method of using bolts to penetrate the metal layer panels to dock them, thereby increasing the practicality of the integrated composite roof.

[0016] The present invention is further configured such that: a fireproof layer is fixedly connected to the side of the metal layer panel away from the fixing block; a first waterproof layer is fixedly connected to the side of the fireproof layer away from the metal layer panel; a sound insulation layer is fixedly connected to the side of the first waterproof layer away from the fireproof layer; a second adhesive layer is fixedly connected to the side of the sound insulation layer away from the first waterproof layer; a second waterproof layer is fixedly connected to the side of the second adhesive layer away from the sound insulation layer; and a bottom plate is fixedly connected to the side of the second waterproof layer away from the second adhesive layer.

[0017] By adopting the above technical solution, both the second waterproof layer and the first waterproof layer are made of asphalt roll material, which gives the integrated composite roof good waterproof performance. The sound insulation layer is made of glass wool material, which gives the integrated composite roof good sound insulation performance. The second adhesive layer is a sealant used to bond the second adhesive layer and the second waterproof layer. The bottom plate is made of stainless steel plate.

[0018] The beneficial effects of this utility model are as follows: Two metal panels are brought together, and a limiting block passes through the connecting groove on the connecting block. Because the limiting block is "G"-shaped, it connects the two metal panels, preventing them from separating. As the limiting block passes through the connecting groove, it aligns the vertical groove with the vertical block, and the vertical block passes through the vertical groove. This increases the connection strength between the two metal panels and enhances their load-bearing capacity. Furthermore, the movement of the limiting block through the connecting groove and the vertical block through the vertical groove causes a stabilizing mechanism to pass through the connecting block, further increasing the connection strength between the two metal panels. This improves the stability of the connection between the two metal panels. The connection block completes the connection between the two metal panels without the need for drilling holes in the metal panels or for bolts to penetrate them for fixation. This avoids bolt corrosion and water leakage caused by prolonged use, thus increasing the practicality of the integrated composite roof. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial structural diagram of the connecting block of this utility model;

[0021] Figure 3 This is a schematic diagram of the metal layer panel structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the planar structure of the connecting block of this utility model;

[0023] Figure 5 For the present utility model Figure 3 Enlarged view of point A;

[0024] Figure 6 This is a sectional view of the vertical section of the connecting block of this utility model.

[0025] In the picture:

[0026] 1. Metal panel; 2. Fireproof layer; 3. First waterproof layer; 4. Sound insulation layer; 5. Second adhesive layer; 6. Second waterproof layer; 7. Bottom plate; 8. Fixing plate; 9. Reinforcing inclined plate; 10. Connecting block; 11. Positioning plate; 12. Fixing block; 13. Connecting plate; 14. Connecting slot; 15. Sealing strip; 16. Inner limiting groove; 17. Sealing groove; 18. Vertical groove; 19. Stabilizing groove; 20. Rubber strip; 21. Fixing bolt; 22. Corrugated peak; 23. Threaded hole; 24. Limiting block; 25. Vertical block; 26. Stabilizing block; 27. Fixing block; 28. Sealing slider; 29. ​​Sliding column; 30. Slot. Detailed Implementation

[0027] To facilitate a clear understanding of the technical means, creative features, objectives, and effects of this utility model, the following details... Figure 1-6 As shown, this utility model is further illustrated.

[0028] like Figure 1-4As shown, this utility model is an integrated composite roof, including a metal panel 1, with corrugations 22 on the metal panel 1, and connecting blocks 10 on the metal panel 1. The connecting blocks 10 are trapezoidal, and two vertical grooves 18 are formed through the connecting blocks 10. The lower side of the vertical grooves 18 extends out of the side surface of the connecting blocks 10 near the metal panel 1. The connecting blocks 10 are slidably connected to the metal panel 1. A plurality of vertical blocks 25 that can be inserted into the vertical grooves 18 are fixedly connected to the metal panel 1. Two vertical grooves 25 are formed through the connecting blocks 10. Two connecting slots 14 are arranged in opposite directions. One end of the connecting slot 14 extends from the side surface of the connecting block 10 near the metal layer panel 1. The vertical cross section of the connecting slot 14 is "G" shaped. Multiple limiting blocks 24 that can be inserted into the connecting slot 14 are fixedly connected to the metal layer panel 1. The connecting block 10 is provided with a stabilizing mechanism to increase the stability when the two metal layer panels 1 are connected. The metal layer panel 1 is provided with a reinforcing mechanism to increase the strength when the connecting block 10 connects the two metal layer panels 1.

[0029] In use, the two metal layer panels 1 are brought together, and the limiting block 24 is passed through the connecting slot 14 on the connecting block 10. Because the limiting block 24 is in the shape of a "G", it has a connecting effect on the two metal layer panels 1, making the two metal layer panels 1 inseparable. As the limiting block 24 passes through the connecting slot 14, it drives the vertical slot 18 to align with the vertical block 25, and the vertical block 25 passes through the vertical slot 18. The vertical block 25 passing through the vertical slot 18 can increase the connection strength between the two metal layer panels 1 and increase the load-bearing capacity of the connection between the two metal layer panels 1. Furthermore, as the limiting block 24 passes through the connecting slot 14 and the vertical block 25 passes through the vertical slot 18, it drives the stabilizing mechanism to pass through the connecting block 10, further increasing the connection strength between the connecting block 10 and the two metal layer panels 1. This improves the stability of the connection between the connecting block 10 and the two metal layer panels 1. The connection between the two metal layer panels 1 is completed by using the connecting block 10. During the connection process, it is not necessary to use bolts to drill holes in the metal layer panels 1 or to use bolts to penetrate the metal layer panels 1 for fixation. This avoids the phenomenon of water leakage caused by bolt corrosion after long-term use, thereby increasing the practicality of the integrated composite roof.

[0030] The connecting block 10 is trapezoidal to facilitate drainage and prevent rainwater accumulation.

[0031] like Figure 1-5As shown, the reinforcing mechanism includes multiple reinforcing inclined plates 9 fixedly connected to the metal panel 1 and arranged at an angle. A sliding column 29 is fixedly connected to one end of the reinforcing inclined plate 9 away from the metal panel 1. The sliding column 29 can abut against one side of the connecting block 10. The sliding column 29 contacts the left and right side surfaces of the connecting block 10. The inclination direction of the reinforcing inclined plate 9 is from the limiting block 24 to the vertical block 25 in the direction away from the metal panel 1.

[0032] In this scheme, when the limiting block 24 passes through the connecting slot 14 on the connecting block 10, the sliding posts 29 on both sides of the connecting block 10 abut against the left and right sides of the connecting block 10. The two sliding posts 29 have a reinforcing effect on the connecting block 10, preventing the connecting block 10 from deforming when the two metal panels 1 are under load. This improves the stability and load-bearing capacity of the connecting block 10 after the two metal panels 1 are connected by the connecting block 10, thereby increasing the strength of the integrated composite roof.

[0033] like Figure 1-6 As shown, the stabilizing mechanism includes an inner limiting groove 16 that runs through the connecting block 10 and communicates with the connecting slot 14. The inner limiting groove 16 communicates with the end of the connecting slot 14 away from the metal layer panel 1. The end of the limiting block 24 away from the metal layer panel 1 is fixedly connected to a fixing block 27 that can be inserted into the inner limiting groove 16. A stabilizing groove 19 is provided through the inner wall of the vertical groove 18 near the reinforcing inclined plate 9. A stabilizing block 26 that can be inserted into the stabilizing groove 19 is fixedly connected to the vertical block 25. A sealing mechanism is provided on the connecting block 10 for sealing when the connecting block 10 is connected to the metal layer panel 1.

[0034] In this scheme, when the limiting block 24 is inserted into the connecting slot 14 on the connecting block 10, the inner limiting slot 16 is simultaneously aligned with the fixed block 27, and the fixed block 27 is slidably inserted into the inner limiting slot 16. The insertion of the fixed block 27 into the inner limiting slot 16 can increase the connection between the connecting block 10 and the metal layer panel 1. Furthermore, since the diameter of the fixed block 27 is much larger than the width of the limiting block 24, the sliding connection between the fixed block 27 and the inner limiting slot 16 can further improve the connection strength between the connecting block 10 and the metal layer panel 1, and increase the load-bearing capacity after the two metal layer panels 1 are joined together.

[0035] Furthermore, the slidable connection between the stabilizing groove 19 and the stabilizing block 26 can increase the connection strength between the connecting block 10 and the metal layer panel 1, and increase the contact area between the connecting block 10 and the metal layer panel 1, making the connecting block 10 more stable when connecting the two metal layer panels 1.

[0036] like Figure 1-5As shown, the sealing mechanism includes a sealing slider 28 fixedly connected to the metal panel 1. A sealing groove 17 is opened through the side of the connecting block 10 near the metal panel 1 and is slidably connected to the sealing slider 28. Multiple rubber strips 20 are fixedly connected to the inner wall of the sealing groove 17. Two sealing strips 15 are fixedly connected to the connecting block 10. The two sealing strips 15 can abut against the metal panel 1. The sealing slider 28 is semi-hexagonal prism. The semi-hexagonal prism shape of the sealing slider 28 can increase the contact area between the sealing groove 17 and the sealing slider 28, thereby increasing the number of sealing grooves 17 and improving the sealing performance of the connecting block 10 for the connection between the two metal panels 1.

[0037] In this solution, when the connecting block 10 is used to connect two metal layer panels 1, the lower surface of the connecting block 10 is in contact with the upper surface of the metal layer panel 1, and the sealing slider 28 is inserted into the sealing groove 17. The sliding connection between the sealing slider 28 and the sealing groove 17 can increase the contact area between the metal layer panel 1 and the connecting block 10, thereby improving the sealing performance between the metal layer panel 1 and the connecting block 10. Furthermore, the rubber strip 20 is placed between the sealing groove 17 and the sealing slider 28 to increase the sealing between the sealing groove 17 and the sealing slider 28, thereby improving the sealing performance between the metal layer panel 1 and the connecting block 10, and thus improving the sealing performance when the two metal layer panels 1 are connected, and further improving the sealing performance of the integrated composite roof.

[0038] The sealing strip 15 is made of rubber. When the connecting block 10 mates with the two metal panels 1, the sealing strip 15 will abut against the upper surface of the metal panel 1. At this time, the sealing strip 15 provides a certain degree of sealing between the connecting block 10 and the metal panel 1, thereby improving the sealing performance between the two metal panels 1.

[0039] like Figure 1-3 As shown, a fixing plate 8 is fixedly connected to the metal panel 1, and a positioning plate 11 is fixedly connected to the fixing plate 8. The positioning plate 11 is slidably connected to the connecting block 10. A connecting plate 13 is fixedly connected to the metal panel 1, and a fixing block 12 is fixedly connected to the connecting plate 13. The fixing block 12 is fixedly connected to the metal panel 1. A slot 30 is provided on the fixing block 12, and the end of the connecting block 10 can be inserted into the slot 30. A threaded hole 23 is provided through the positioning plate 11, and a positioning hole is provided on the connecting block 10. A fixing bolt 21 is threadedly connected to the threaded hole 23, and the end of the fixing bolt 21 is inserted into the positioning hole.

[0040] In this design, a sealing gasket is provided inside the slot 30.

[0041] In this solution, when all the limiting blocks 24 are inserted into the connecting slots 14 using the connecting block 10, one end of the connecting block 10 is slidably inserted into the slot 30, and then the fixing bolt 21 is rotated so that the fixing bolt 21 is inserted into the positioning hole on the connecting block 10, thereby fixing the connecting block 10 and completing the docking work between the two metal layer panels 1. The docking is convenient and quick, the operation is simple, and the docking efficiency is high. Moreover, there is no need to drill holes in the metal layer panel 1 during the docking process, thus avoiding the leakage phenomenon that is easily caused by the traditional method of using bolts to penetrate the metal layer panel 1 for docking, thereby increasing the practicality of the integrated composite roof.

[0042] like Figure 1-3 As shown, a fireproof layer 2 is fixedly connected to the side of the metal panel 1 away from the fixing block 12. A first waterproof layer 3 is fixedly connected to the side of the fireproof layer 2 away from the metal panel 1. A sound insulation layer 4 is fixedly connected to the side of the first waterproof layer 3 away from the fireproof layer 2. A second adhesive layer 5 is fixedly connected to the side of the sound insulation layer 4 away from the first waterproof layer 3. A second waterproof layer 6 is fixedly connected to the side of the second adhesive layer 5 away from the sound insulation layer 4. A bottom plate 7 is fixedly connected to the side of the second waterproof layer 6 away from the second adhesive layer 5.

[0043] Both the second waterproof layer 6 and the first waterproof layer 3 are made of asphalt roll material, giving the integrated composite roof good waterproof performance. The sound insulation layer 4 is made of glass wool, giving the integrated composite roof good sound insulation performance. The second adhesive layer 5 is a sealant used to bond the second adhesive layer 5 and the second waterproof layer 6. The bottom plate 7 is made of stainless steel.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes and modifications can be made without departing from the spirit and scope of this utility model. All such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An integrated composite roof, comprising a metal panel (1), characterized in that: The metal panel (1) is provided with a wave crest (22), and a connecting block (10) is provided on the metal panel (1). Two vertical slots (18) are opened through the connecting block (10). The connecting block (10) is slidably connected to the metal panel (1). Multiple vertical blocks (25) that can be inserted into the vertical slots (18) are fixedly connected to the metal panel (1). Two connecting slots (14) arranged in opposite directions are opened through the connecting block (10). Multiple limiting blocks (24) that can be inserted into the connecting slots (14) are fixedly connected to the metal panel (1). A stabilizing mechanism is provided on the connecting block (10). The stabilizing mechanism is used to increase the stability when the two metal panels (1) are connected. A reinforcing mechanism is provided on the metal panel (1). The reinforcing mechanism is used to increase the strength when the connecting block (10) connects the two metal panels (1).

2. The integrated composite roof according to claim 1, characterized in that: The strengthening mechanism includes multiple reinforcing inclined plates (9) fixedly connected to the metal layer panel (1) and arranged at an angle. A sliding column (29) is fixedly connected to one end of the reinforcing inclined plate (9) away from the metal layer panel (1). The sliding column (29) can abut against one side of the connecting block (10).

3. The integrated composite roof according to claim 2, characterized in that: The stabilizing mechanism includes an inner limiting groove (16) that runs through the connecting block (10) and communicates with the connecting slot (14). The end of the limiting block (24) away from the metal panel (1) is fixedly connected to a fixing block (27) that can be inserted into the inner limiting groove (16). The inner wall of the vertical groove (18) near the reinforcing inclined plate (9) is provided with a stabilizing groove (19). The vertical block (25) is fixedly connected to a stabilizing block (26) that can be inserted into the stabilizing groove (19). The connecting block (10) is provided with a sealing mechanism for sealing the connection between the connecting block (10) and the metal panel (1).

4. The integrated composite roof according to claim 3, characterized in that: The sealing mechanism includes a sealing slider (28) fixedly connected to the metal panel (1). A sealing groove (17) that is slidably connected to the sealing slider (28) is opened through the side of the connecting block (10) near the metal panel (1). A plurality of rubber strips (20) are fixedly connected to the inner wall of the sealing groove (17). Two sealing strips (15) are fixedly connected to the connecting block (10). The two sealing strips (15) can abut against the metal panel (1).

5. The integrated composite roof according to claim 1, characterized in that: A fixing plate (8) is fixedly connected to the metal panel (1), and a positioning plate (11) is fixedly connected to the fixing plate (8). The positioning plate (11) is slidably connected to the connecting block (10). A connecting plate (13) is fixedly connected to the metal panel (1), and a fixing block (12) is fixedly connected to the connecting plate (13). The fixing block (12) is fixedly connected to the metal panel (1). A slot (30) is provided on the fixing block (12). A threaded hole (23) is provided through the positioning plate (11). A positioning hole is provided on the connecting block (10). A fixing bolt (21) is threadedly connected to the threaded hole (23). The end of the fixing bolt (21) is inserted into the positioning hole.

6. The integrated composite roof according to claim 1, characterized in that: A fireproof layer (2) is fixedly connected to the side of the metal panel (1) away from the fixing block (12). A first waterproof layer (3) is fixedly connected to the side of the fireproof layer (2) away from the metal panel (1). A sound insulation layer (4) is fixedly connected to the side of the first waterproof layer (3) away from the fireproof layer (2). A second adhesive layer (5) is fixedly connected to the side of the sound insulation layer (4) away from the first waterproof layer (3). A second waterproof layer (6) is fixedly connected to the side of the second adhesive layer (5) away from the sound insulation layer (4). A bottom plate (7) is fixedly connected to the side of the second waterproof layer (6) away from the second adhesive layer (5).

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