Waterproof composite PET (Polyethylene Terephthalate) plate

Abstract

According to the waterproof composite PET plate disclosed by the invention, a small amount of permeated water can be rapidly absorbed through a water absorption block and water flow is guided to an expansion block, and the expansion block expands after absorbing water and extrudes a sealing sleeve, so that the sealing performance of a splicing area is remarkably enhanced; the water seepage treatment efficiency is further optimized through the flow guide blocks and the flow guide bundles, a secondary sealing barrier is formed under the condition that the water seepage amount is increased, and further water seepage is effectively prevented; in addition, the flow guide heat absorption plate can accelerate water vapor discharge and recover the water absorption capacity of the water absorption block and the expansion block through the design of a wave-shaped structure and evaporation anti-seepage holes in combination with heat transfer of heat conduction fibers, the service life of the assembly is prolonged, and the modular design is adopted, so that the production cost is reduced, and the production efficiency is improved. The whole protection system is convenient to install, maintain and replace, is suitable for scenes such as building outer walls needing waterproof splicing, and has the remarkable protection effect and economical efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of PET sheets, and more particularly to a waterproof composite PET sheet. Background Art

[0002] PET sheet is a new building material with polyethylene terephthalate (PET) as the base material and a multi-layer waterproof structure design. The sheet has a wide range of application prospects in the fields of building exterior walls and decoration. It is characterized by light material, high strength, good weather resistance, and excellent waterproof performance. Compared with traditional single-layer waterproof coatings or strip sealing materials, waterproof composite PET sheet achieves a more reliable and lasting waterproof effect through composite design, can adapt to various complex external environments, and is an ideal waterproof material choice in modern construction projects.

[0003] During the construction process of existing spliced ​​PET sheets, due to the presence of splicing gaps between the sheets, these gap areas become the main risk points for water seepage. Especially during the long-term use of the building's exterior walls, rainwater can easily penetrate into the sheets through the splicing gaps, causing damage to the sheet structure, thereby affecting its overall waterproof performance and stability. At the same time, most of the current spliced ​​PET sheets lack a multi-level protection design for the splicing gaps, and cannot effectively prevent further penetration of moisture. At the same time, they usually lack a water seepage monitoring function, making it difficult to promptly detect and locate the water seepage area, resulting in the water seepage problem not being dealt with in a timely manner, seriously affecting the long-term service life of the building. Therefore, there is an urgent need for a waterproof composite PET sheet with optimized structure and complete functions, which can solve the problem of water seepage in the splicing gaps through a multi-level protection structure design, and has water seepage monitoring and self-recovery functions to meet the needs of modern buildings for high-performance waterproof materials.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a waterproof composite PET sheet. Summary of the invention

[0005] The object of the present invention is to provide a waterproof composite PET sheet to solve the above-mentioned problems.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] A waterproof composite PET plate comprises: a substrate, a vertical waterproof board, a support assembly and a protective assembly, wherein the substrate is a plate made of polyethylene terephthalate material, and fixed boards are inlaid around the substrate, a pair of mutually symmetrical vertical waterproof boards are movably connected at the left and right ends of the substrate, and a pair of mutually symmetrical horizontal waterproof boards are movably connected at the upper and lower ends of the substrate; the vertical waterproof board comprises a support assembly and a protective assembly, and the vertical waterproof board is used to protect and monitor water seepage in the edge area of ​​the substrate; the support assembly comprises a support plate, and the support plate is detachably connected to the fixed plate; the protective assembly comprises a water absorbing block, and the water absorbing block is installed in the support plate.

[0008] As a further improvement of the present invention, one end of the support plate is fixedly connected to a guide heat absorbing plate, and the shape of the outer surface of the guide heat absorbing plate is set to be wavy.

[0009] As a further improvement of the present invention, a plurality of evenly distributed evaporation anti-seepage holes are provided on the guide heat absorbing plate, and the evaporation anti-seepage holes are arranged in an inclined manner, and the lowest end of the evaporation anti-seepage hole is located on the outer surface of the guide heat absorbing plate, and the higher end of the evaporation anti-seepage hole is located on the inner surface of the guide heat absorbing plate.

[0010] As a further improvement of the present invention, a waterproof and breathable membrane is installed in the evaporation and anti-seepage hole, and the material of the waterproof and breathable membrane is a polytetrafluoroethylene microporous membrane.

[0011] As a further improvement of the present invention, a plurality of evenly distributed heat-conducting fibers are embedded at one end of the guide heat-absorbing plate close to the support plate, and the plurality of heat-conducting fibers penetrate the support plate and extend into the water-absorbing block.

[0012] As a further improvement of the present invention, the material of the water-absorbing block is water-absorbing sponge material, a pair of mutually symmetrical expansion blocks are installed at the outer end of the water-absorbing block, a sealing sleeve is arranged around one end of the expansion block, the sealing sleeve is installed on the inner wall of the support plate, and the material of the expansion block is set to highly absorbent resin.

[0013] As a further improvement of the present invention, a guide block is provided in the middle of the pair of sealing sleeves, and both ends of the guide block are connected to the inner wall of the support plate.

[0014] As a further improvement of the present invention, a plurality of evenly distributed guide beams are installed at both ends of the guide block, and the guide beams penetrate the sealing sleeve and extend into the sealing sleeve.

[0015] As a further improvement of the present invention, the material of the guide block is set to be a water-absorbing sponge material, and the material of the guide bundle is set to be a non-woven fabric material.

[0016] As a further improvement of the present invention, a dissolving block is installed on the inner wall of one end of the support plate away from the guide heat absorbing plate, and a plurality of evenly distributed water-soluble capsules are installed on the dissolving block. An effervescent tablet is coated in the middle of the water-soluble capsule, and a water-soluble solid dye is coated on the bottom side of the effervescent tablet in the water-soluble capsule.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] This solution forms a multi-level and multifunctional protection system through the precise coordination of components such as water-absorbing blocks, expansion blocks, sealing sleeves, guide blocks, guide bundles and dissolving blocks. The water-absorbing blocks can quickly absorb a small amount of infiltrated water and guide the water flow to the expansion blocks. The expansion blocks expand and squeeze the sealing sleeves after absorbing water, which significantly enhances the sealing performance of the splicing area; the guide blocks and guide bundles further optimize the efficiency of water seepage treatment, and form a secondary sealing barrier when the amount of water seepage increases, effectively preventing further penetration of water; the dissolving blocks provide a color alarm function to achieve rapid water seepage detection. In addition, the guide heat-absorbing plate can accelerate the discharge of water vapor and restore the water absorption capacity of the water-absorbing blocks and expansion blocks through the wavy structure and evaporation anti-seepage hole design, combined with the heat transfer of the thermal conductive fiber, thereby extending the service life of the components. Through modular design, the entire protection system is easy to install, maintain and replace. It is suitable for scenes such as building exterior walls that require waterproof splicing, and has significant protection effect and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the support assembly and the protection assembly of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the guide heat absorbing plate of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the protection component of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the dissolving block of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional split structure of the support component and the protection component of the present invention;

[0025] Figure 7 It is a schematic diagram of the cross-sectional structure of the dissolving block of the present invention.

[0026] Description of the numbers in the figure:

[0027] 1. Base material; 2. Vertical waterproof board; 3. Horizontal waterproof board; 4. Support assembly; 5. Protection assembly; 41. Diversion heat absorption plate; 42. Evaporation anti-seepage hole; 43. Support plate; 51. Water absorption block; 52. Diversion block; 53. Sealing sleeve; 54. Dissolving block; 55. Water-soluble capsule; 56. Effervescent tablet; 57. Water-soluble solid dye. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0029] The first implementation method:

[0030] See also Figure 1-7 A waterproof composite PET sheet comprises: a substrate 1, a vertical waterproof board 2, a support assembly 4 and a protection assembly 5, wherein the substrate 1 is made of a polyethylene terephthalate material, and fixed plates are inlaid around the substrate 1, a pair of mutually symmetrical vertical waterproof boards 2 are movably connected at the left and right ends of the substrate 1, and a pair of mutually symmetrical horizontal waterproof boards 3 are movably connected at the upper and lower ends of the substrate 1; the vertical waterproof board 2 comprises a support assembly 4 and a protection assembly 5, and the vertical waterproof board 2 is used to protect and monitor water seepage in the edge area of ​​the substrate 1; the support assembly 4 comprises a support plate 43, and the support plate 43 is detachably connected to the fixed plate; the protection assembly 5 comprises a water absorbing block 51, and the water absorbing block 51 is installed in the support plate 43.

[0031] Among them, through the precise coordination of components such as the water absorption block 51, the expansion block, the sealing sleeve 53, the guide block 52, the guide bundle and the dissolving block 54, a multi-level and multifunctional protection system is formed. The water absorption block 51 can quickly absorb a small amount of infiltrated water and guide the water flow to the expansion block. The expansion block expands and squeezes the sealing sleeve 53 after absorbing water, thereby significantly enhancing the sealing performance of the splicing area; the guide block 52 and the guide bundle further optimize the water seepage treatment efficiency, and form a secondary sealing barrier when the amount of water seepage increases, effectively preventing further penetration of water flow; the dissolving block 54 provides a color alarm function to achieve rapid water seepage monitoring. In addition, the guide heat absorption plate 41, through the wavy structure and the evaporation anti-seepage hole 42 design, combined with the heat transfer of the thermal conductive fiber, can accelerate the discharge of water vapor and restore the water absorption capacity of the water absorption block 51 and the expansion block, thereby extending the service life of the components. Through modular design, the entire protection system is easy to install, maintain and replace, and is suitable for scenes such as building exterior walls that require waterproof splicing, with significant protection effect and economy.

[0032] The material of the water-absorbing block 51 is water-absorbing sponge material. A pair of symmetrical expansion blocks are installed at the outer end of the water-absorbing block 51. A sealing sleeve 53 is arranged around one end of the expansion block. The sealing sleeve 53 is installed on the inner wall of the support plate 43. The material of the expansion block is set to highly absorbent resin. A guide block 52 is arranged in the middle of the pair of sealing sleeves 53. Both ends of the guide block 52 are connected to the inner wall of the support plate 43. Both ends of the guide block 52 are installed with multiple evenly distributed guide beams. The guide beams penetrate the sealing sleeve 53 and extend into the sealing sleeve 53. The material of the guide block 52 is set to water-absorbing sponge material, and the material of the guide beam is non-woven fabric material.

[0033] A dissolving block 54 is installed on the inner wall of one end of the support plate 43 away from the guide heat absorbing plate 41. A dissolving block 54 is installed on the inner wall of one end of the support plate 43 away from the guide heat absorbing plate 41. A plurality of evenly distributed water-soluble capsules 55 are installed on the dissolving block 54. An effervescent tablet 56 is coated in the middle of the water-soluble capsule 55, and a water-soluble solid dye 57 is coated on the bottom side of the effervescent tablet 56 in the water-soluble capsule 55.

[0034] Among them, when installing multiple substrates 1, the vertical waterproof board 2 and the horizontal waterproof board 3 designed on the outer end of the substrate 1 are in abutment state, and the material of the water-absorbing block 51 is a water-absorbing sponge material. Its main function is to absorb a small amount of infiltrated water to prevent it from further diffusing into the deep area of ​​the protective structure. When the external water flow enters the interior through the primary protective layer, the water-absorbing block 51 can quickly absorb water and maintain a certain water absorption capacity, thereby providing a buffer for subsequent protective components. In addition, the water-absorbing block 51 also plays a role in filtering and guiding water flow, ensuring that the seepage water can be effectively transferred to the subsequent expansion block for further processing.

[0035] A pair of symmetrical expansion blocks are installed at the outer end of the water-absorbing block 51. The expansion blocks are made of highly absorbent resin, which can quickly absorb seepage water and expand significantly. A sealing sleeve 53 is arranged outside one end of the expansion block. The sealing sleeve 53 is installed on the inner wall of the support plate 43. The expansion block will push the sealing sleeve 53 to expand outward during the water absorption and expansion process, thereby squeezing the structure of the gap area. At the same time, the sealing sleeve 53 is divided into a pair on the inside and the outside. When the outer sealing sleeve 53 leaks water, the expansion of its expansion block further enhances the sealing effect of the sealing sleeve 53 arranged inside, forming a secondary protective barrier, which can effectively prevent further penetration of water and significantly improve the sealing performance.

[0036] A guide block 52 is arranged in the middle of the sealing sleeve 53. The function of the guide block 52 is to quickly guide the seepage water to the water absorption block 51 and the expansion block area. At the same time, it also has a certain water absorption capacity. The material of the guide block 52 is a water-absorbing sponge material, which can absorb part of the seepage water and buffer it. The two ends of the guide block 52 are connected to the inner wall of the support plate 43, and a plurality of evenly distributed guide beams are installed at both ends. The material of the guide beam is non-woven fabric material, which penetrates the sealing sleeve 53 and extends to the inside of the sealing sleeve 53. The core function of the guide beam is to quickly guide the water flow into the expansion block area, ensure that the expansion block can absorb water and expand in the first time, drive the sealing sleeve 53 to expand outward, thereby quickly enhancing the sealing performance of the sealing sleeve 53 and forming a more effective protective barrier.

[0037] In addition, the flexible structure of the guide beam can adapt to the deformation generated during the expansion process of the expansion block, ensuring that it always maintains a good guiding function during the dynamic sealing process, effectively improving the response speed of the expansion block and the adaptability of the sealing sleeve 53, so that the entire protection system can still quickly form a secondary sealing barrier when the water seepage suddenly increases, preventing further water penetration.

[0038] A dissolving block 54 is installed on the inner wall of one end of the support plate 43 away from the guide heat absorbing plate 41. The main function of the dissolving block 54 is to serve as a water seepage alarm. When the external water flow still penetrates into the deep area of ​​the support plate 43 under the action of the multi-layer protection component, a plurality of water-soluble capsules 55 are installed on the dissolving block 54, and an effervescent tablet 56 is installed in the middle of the water-soluble capsule 55. When the water flow contacts the water-soluble capsule 55, it will dissolve, so that the effervescent tablet 56 will produce a large amount of gas when reacting with the water flow, and at the same time, it can make its water-soluble solid dye 57 fully contact the water flow and be quickly discharged under the action of the gas, thereby issuing an early warning. At the same time, the gas can also further drive the water flow that enters it to be discharged, thereby providing certain protection, showing a color change on the outside of the plate, reminding the staff to promptly discover and deal with the water seepage problem, which can not only achieve rapid water seepage detection, but also reduce the time and cost of manual investigation by means of color display alarm.

[0039] It should be noted that the horizontal waterproof board 3 is designed to be detachably mounted on the fixed plates at the upper and lower ends of the substrate 1. The design principle of the horizontal waterproof board 3 is the same as that of the vertical waterproof board 2. Because it is installed horizontally, some of its structural features are different. A wavy guide heat absorption plate 41 is used inside it. The direction of the wave is parallel to the lateral edge of the substrate 1, which can quickly guide horizontal seepage and accelerate drainage through the inclined evaporation anti-seepage holes 42. At the same time, the waterproof and breathable membrane installed in the hole prevents external water from infiltrating in reverse; the guide block 52 and the guide bundle in the horizontal waterproof board 3 are optimized to be flat and high-density. The design can quickly guide the seepage water to the water absorption block 51 and the expansion block area. After absorbing water, the expansion block pushes the sealing sleeve 53 to expand in the upward and downward directions, thereby enhancing the sealing performance and forming an internal and external double sealing barrier. In addition, the horizontal waterproof board 3 is also equipped with a dissolving block 54 made of water-based color developing dye. When the seepage water breaks through multiple protections and enters the deep area, the dissolving block will display color and alarm to remind the staff to deal with it in time. The vertical waterproof board 2 and the horizontal waterproof board 3 can be directly disassembled and replaced. This design effectively solves the water seepage problem in the upper and lower splicing areas, and facilitates installation, maintenance and replacement through a modular structure.

[0040] In summary, through the precise coordination of components such as the water absorption block 51, the expansion block, the sealing sleeve 53, the guide block 52, the guide beam and the dissolving block 54, a multi-level and multifunctional protection system is formed. The water absorption block 51 is responsible for the initial water absorption, the expansion block achieves enhanced sealing effect by expanding and squeezing the sealing sleeve 53, the guide block 52 and the guide beam guide the water flow and optimize the water seepage treatment efficiency, and the dissolving block 54 provides the final color display alarm function. In long-term use, the design can also be easily replaced and maintained through a modular structure, providing a reliable, economical and efficient solution for waterproof splicing scenarios such as building exterior walls.

[0041] One end of the support plate 43 is fixedly connected to the guide heat absorbing plate 41, the shape of the outer surface of the guide heat absorbing plate 41 is set to be wavy, and a plurality of evenly distributed evaporation anti-seepage holes 42 are opened on the guide heat absorbing plate 41. The evaporation anti-seepage holes 42 are arranged in an inclined manner. The lowest end of the evaporation anti-seepage hole 42 is located on the outer surface of the guide heat absorbing plate 41, and the higher end of the evaporation anti-seepage hole 42 is located on the inner surface of the guide heat absorbing plate 41. A waterproof and breathable membrane is installed in the evaporation anti-seepage hole 42, and the material of the waterproof and breathable membrane is a polytetrafluoroethylene microporous membrane.

[0042] One end of the guide heat absorbing plate 41 close to the support plate 43 is inlaid with a plurality of evenly distributed heat conducting fibers, and the plurality of heat conducting fibers penetrate the support plate 43 and extend into the water absorbing block 51 .

[0043] Among them, one end of the support plate 43 is fixedly connected to a guide heat absorbing plate 41, and the outer surface of the guide heat absorbing plate 41 is designed as a wavy structure, which can effectively guide the rainwater or seepage water flowing in from the outside to be discharged along the wave groove, reducing the possibility of water being retained on the surface of the plate 41. A plurality of evaporation anti-seepage holes 42 are evenly distributed on the guide heat absorbing plate 41. These evaporation anti-seepage holes 42 are arranged in an inclined manner, with the lowest end located on the outer surface of the guide heat absorbing plate 41 and the higher end located on the inner surface. Such an inclined design enables the pores to naturally guide the water vapor to be discharged from the inside to the outside, while avoiding the reverse penetration of external water. In order to further enhance the protective performance, a waterproof and breathable membrane is installed inside the evaporation anti-seepage hole 42. The breathable membrane is made of a polytetrafluoroethylene microporous membrane, has good waterproofness and breathability, can effectively block the entry of liquid water, and allow internal moisture to be quickly discharged.

[0044] In addition, in order to achieve the evaporation of water after water seepage and the self-recovery function of the system, a plurality of evenly distributed thermal conductive fibers are inlaid at one end of the guide heat absorbing plate 41 close to the support plate 43. These thermal conductive fibers penetrate the support plate 43 and extend into the water absorbing block 51. The function of the thermal conductive fibers is to efficiently transfer the heat in the external environment to the water absorbing block 51 and the surrounding area, accelerate the evaporation process of the accumulated water in the water absorbing block 51 and the expansion block, thereby reducing the impact of long-term moisture retention on the waterproof performance. Through the efficient heat conduction of the thermal conductive fibers and the breathable and dehumidifying function of the evaporation anti-seepage holes 42, the entire system can achieve rapid water vapor discharge in sunny or high temperature environments, effectively restore the capacity of the water absorbing block 51 and the expansion block, and extend the service life of the protective component 5.

[0045] Through the above design, not only can the seepage water be efficiently guided and discharged, but it can also self-repair through heat conduction and water vapor evaporation during daily use, significantly improving the dynamic sealing performance and long-term reliability of the protection system.

[0046] Working principle:

[0047] A multi-layer protection system is formed by the synergistic effect of components such as the water absorbing block 51, the expansion block, the sealing sleeve 53, the guide block 52, the guide beam, the dissolving block 54, the guide heat absorbing plate 41, the evaporation anti-seepage hole 42 and the thermal conductive fiber. When the external water flows into the joint gap through the primary protection layer, the water absorbing block 51 can quickly absorb a small amount of water and play a buffering role, and at the same time guide the water flow to the expansion block area 51. The expansion block is made of a highly absorbent resin and can quickly absorb water and expand, pushing the sealing sleeve 53 to expand outward, significantly enhancing the sealing performance of the joint gap. The inner and outer layers of the sealing sleeve 53 can push the inner sealing sleeve 53 through the further expansion of the expansion block when the outer seal fails, forming a secondary sealing barrier 53. The guide block 52 and the guide bundle work together to quickly guide the seepage water to the water absorption area and play a role in water flow distribution and buffering. The flexible design of the guide bundle can adapt to the deformation of the expansion block when it expands, ensuring the efficiency of the water flow treatment process and dynamic sealing performance 52. When the multi-layer sealing component fails and causes water to penetrate into the deep layer, a plurality of water-soluble capsules 55 are installed on the dissolving block 54, and the water-soluble capsules 55 An effervescent tablet 56 is installed in the middle. When the water flow contacts the water-soluble capsule 55, it will dissolve, so that the effervescent tablet 56 will produce a large amount of gas when reacting with the water flow, and at the same time, the water-soluble solid dye 57 can be fully contacted with the water flow and quickly discharged under the action of the gas, thereby giving an early warning. At the same time, the gas can also further drive the water flow it enters and discharge it, thereby playing a certain protection role. A rapid water seepage alarm is realized through the change of external color, reminding the maintenance personnel to deal with it in time. In addition, the guide heat absorbing plate 41 has a wavy structure and an inclined evaporation The anti-seepage hole 42 is designed to quickly discharge the infiltrated moisture, and achieve waterproof and breathable properties through the polytetrafluoroethylene microporous membrane installed in the hole to prevent external water from reversely penetrating. At the same time, the thermal conductive fiber efficiently transfers the ambient heat to the water absorption block 51 and the expansion block, accelerates the evaporation of accumulated water, and discharges the water vapor through the evaporation anti-seepage hole 42, thereby restoring the water absorption capacity of the water absorption block 51 and the expansion block and extending the service life of the components. In summary, through the precise coordination of various components, the entire system can achieve a multi-level protection effect from primary protection, dynamic sealing to water seepage alarm and self-recovery function.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0049] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A waterproof composite PET sheet, characterized in that: include: A substrate (1), wherein the substrate (1) is a plate made of polyethylene terephthalate material, and fixed plates are inlaid around the substrate (1), and a pair of mutually symmetrical vertical waterproof plates (2) are movably connected at the left and right ends of the substrate (1), and a pair of mutually symmetrical horizontal waterproof plates (3) are movably connected at the upper and lower ends of the substrate (1); A vertical waterproof board (2), the vertical waterproof board (2) comprising a supporting component (4) and a protective component (5), the vertical waterproof board (2) being used to protect and monitor water seepage in the edge area of ​​the substrate (1); A support assembly (4), the support assembly (4) comprising a support plate (43), the support plate (43) being detachably connected to a fixing plate; A protection component (5), wherein the protection component (5) comprises a water absorbing block (51), and the water absorbing block (51) is installed in the support plate (43).

2. The waterproof composite PET sheet according to claim 1, characterized in that: One end of the support plate (43) is fixedly connected to a flow-guiding heat-absorbing plate (41), and the shape of the outer surface of the flow-guiding heat-absorbing plate (41) is set to be wavy.

3. The waterproof composite PET sheet according to claim 2, characterized in that: The guide heat absorbing plate (41) is provided with a plurality of evenly distributed evaporation anti-seepage holes (42), the evaporation anti-seepage holes (42) being arranged in an inclined manner, the lowest ends of the evaporation anti-seepage holes (42) being located on the outer surface of the guide heat absorbing plate (41), and the higher ends of the evaporation anti-seepage holes (42) being located on the inner surface of the guide heat absorbing plate (41).

4. The waterproof composite PET sheet according to claim 3, characterized in that: A waterproof and breathable membrane is installed in the evaporation and anti-seepage hole (42), and the material of the waterproof and breathable membrane is a polytetrafluoroethylene microporous membrane.

5. The waterproof composite PET sheet according to claim 2, characterized in that: A plurality of evenly distributed heat-conducting fibers are embedded at one end of the flow-guiding heat-absorbing plate (41) close to the support plate (43), and the plurality of heat-conducting fibers penetrate the support plate (43) and extend into the water-absorbing block (51).

6. The waterproof composite PET sheet according to claim 1, characterized in that: The water-absorbing block (51) is made of a water-absorbing sponge material. A pair of mutually symmetrical expansion blocks are installed at the outer end of the water-absorbing block (51). A sealing sleeve (53) is arranged outside one end of the expansion block. The sealing sleeve (53) is installed on the inner wall of the support plate (43). The material of the expansion block is set to be a highly absorbent resin.

7. The waterproof composite PET sheet according to claim 6, characterized in that: A guide block (52) is provided in the middle of the pair of sealing sleeves (53), and both ends of the guide block (52) are connected to the inner wall of the support plate (43).

8. The waterproof composite PET sheet according to claim 7, characterized in that: A plurality of evenly distributed guide beams are installed at both ends of the guide block (52), and the guide beams penetrate the sealing sleeve (53) and extend into the sealing sleeve (53).

9. The waterproof composite PET sheet according to claim 7, characterized in that: The material of the guide block (52) is set to be a water-absorbing sponge material, and the material of the guide beam is a non-woven fabric material.

10. The waterproof composite PET sheet according to claim 1, characterized in that: A dissolving block (54) is installed on the inner wall of one end of the support plate (43) away from the flow-guiding heat-absorbing plate (41), and a plurality of evenly distributed water-soluble capsules (55) are installed on the dissolving block (54). An effervescent tablet (56) is coated in the middle of the water-soluble capsule (55), and a water-soluble solid dye (57) is coated on the bottom side of the effervescent tablet (56) in the water-soluble capsule (55).

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