Roof waterproof heat-preservation polyurethane heat insulation plate capable of being laid in staggered mode and production process of roof waterproof heat insulation polyurethane heat insulation plate

Abstract

The invention relates to a roof waterproof heat preservation polyurethane heat insulation plate capable of being laid in a staggered mode and a production process thereof, and belongs to the field of heat preservation and heat insulation. Comprising a polyurethane heat preservation layer and a rubber waterproof layer, the polyurethane heat preservation layer is of an isosceles right-angle triangular prism structure which is longitudinally connected and arranged, the side wall where the bevel edge of the polyurethane heat preservation layer is located is connected with the rubber waterproof layer, and strings longitudinally arranged at equal intervals are arranged between the polyurethane heat preservation layer and the rubber waterproof layer in a penetrating mode. Staggered laying can be achieved, later rain leakage of gaps at the connecting positions is prevented, regular and rapid segmentation can be achieved manually so as to be attached to the roof as much as possible, and the laying efficiency and the waterproof effect are improved.

Description

Technical Field

[0001] The invention relates to a roof waterproof heat-insulating polyurethane heat-insulating board which can be laid in a staggered manner and a production process thereof, and belongs to the field of heat preservation and heat insulation. Background Art

[0002] Polyurethane insulation board is a thermal insulation material with polyurethane rigid foam as the core material and some non-decorative surface layer on both sides. It has excellent properties such as light weight, low thermal conductivity, good heat resistance, aging resistance, easy bonding with other substrates, and no droplets when burned. Polyurethane insulation board is mainly used in industrial and civil building exterior insulation systems and has become the most widely used product system.

[0003] During construction, the polyurethane insulation board is laid before pouring concrete. The roof also includes buildings such as the elevator room, the stairwell, and the wall, which form a corner with the roof. The stress direction and expansion coefficient of the roof and the wall are different, which makes it easy for cracks to form in the corner, causing the roof to leak. The most commonly used is the polyurethane insulation board. When laying the polyurethane insulation board, since the specifications of the insulation board are fixed, it needs to be cut when it is laid in the corner. Usually, workers visually estimate the width and use a knife to cut a line on the insulation board, and then force it apart. However, this method is not accurate enough, and the manual cutting error is large, which often causes waste or leaves large gaps. At the same time, gaps are easily left at the joints between the insulation boards, and rainwater flows in through the gaps, burying hidden dangers for later leaks. Summary of the invention

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the present invention is: to provide a roof waterproof and thermal insulation polyurethane insulation board that can be laid in an offset manner and a production process thereof, which can be laid in an offset manner to prevent rain leakage from the gaps at the joints in the later stage, and at the same time can be divided regularly and quickly by hand to fit the roof as closely as possible, thereby improving the laying efficiency and waterproofing effect.

[0005] The invention discloses a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner, comprising a polyurethane insulation layer and a rubber waterproof layer. The polyurethane insulation layer is an isosceles right-angled triangular prism structure that is connected and arranged longitudinally. The side wall where the hypotenuse of the polyurethane insulation layer is located is connected to the rubber waterproof layer. Thin ropes that are arranged longitudinally and equidistantly are provided between the polyurethane insulation layer and the rubber waterproof layer.

[0006] The present invention discloses a production process for a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner, comprising a foaming device, the foaming device comprising a shell, an upper pressure plate and a side pressure plate are hinged on the top and right side of the shell respectively, the shell, the upper pressure plate and the side pressure plate form a closed foaming mold, a plurality of injection holes are arranged on the left side of the shell, an isolation plate is arranged inside the shell, the isolation plate is a repeatedly folded wave-like structure, the angle of the fold is 90°, the isolation plate cooperates with the polyurethane insulation layer, filling blocks are arranged on both side ends of the isolation plate, the wide end of the filling block and the corners on both sides of the isolation plate are in the same plane, and the side faces of the filling block are provided with equidistantly arranged limit grooves.

[0007] Working principle and process: When working, first spray anti-stick coatings on the isolation board, such as polytetrafluoroethylene, silicone coatings, etc. These coatings can form a smooth surface during the foaming process to prevent the isolation board from sticking to the polyurethane. Pass the thin rope through the limit groove on the filling block and wrap it around the isolation board and connect it end to end, and the thin rope is stuck in the limit grooves corresponding to the filling blocks on both sides. First, lay a rubber waterproof layer on the bottom of the shell, and then lay the isolation board on the rubber waterproof layer. The size of the isolation board corresponds to the size of the inner cavity of the shell, and then lay another rubber waterproof layer on the isolation board, and then use the upper pressure plate to press the rubber waterproof layer on the isolation board, and then fix the upper pressure plate and the side pressure plate to fix the upper pressure plate, the side pressure plate and the shell to form a closed foaming mold. Both rubber waterproof layers and the isolation board form a foaming molding area with a spatial structure of an isosceles right-angled triangular prism. The foaming molding area corresponds to the injection hole one by one. The polyurethane foam material is injected into the foaming molding area through the injection hole. The polyurethane rapidly foams and expands to form a polyurethane insulation layer with a structure of an isosceles right-angled triangular prism in the foaming molding area. The bottom of the polyurethane insulation layer adheres to the rubber waterproof layer to form a polyurethane insulation board. After the foaming is completed, open the upper pressing plate and the side pressing plate, take out the polyurethane insulation board and the isolation board, cut off the thin ropes on both sides of the filling block, and then pull out the isolation board to obtain the upper and lower polyurethane insulation boards. The thin ropes are arranged longitudinally and equidistantly between the polyurethane insulation layer and the rubber waterproof layer.

[0008] A further improvement to the above scheme is that a socket is provided on the outer edge of the upper pressure plate, a slide groove is provided on the side pressure plate, a slide rod is provided in the slide groove, a spring is provided at the bottom end of the slide rod, and the position of the socket corresponds to that of the slide rod. During the foaming process, after the rubber waterproof layer above the isolation plate is pressed tightly with the upper pressure plate, the slide rod is pressed to move and then the spring is compressed to make the side pressure plate and the upper pressure plate cooperate and connect, thereby forming a closed foaming mold with the shell, and then the slide rod is released, and the spring reset pushes the slide rod into the socket on the upper pressure plate to form a fixed connection. After the foaming is completed, the upper pressure plate and the side pressure plate can be released by pressing the slide rod to move and compressing the spring again.

[0009] When laying polyurethane insulation boards, first lay the first layer of polyurethane insulation boards with the rubber waterproof layer close to the laying surface, and then lay the second layer of polyurethane insulation boards at the joint of the polyurethane insulation layer on the first layer of polyurethane insulation boards. At this time, the polyurethane insulation layers of the first layer of polyurethane insulation boards and the second layer of polyurethane insulation boards are closely fitted. The first layer of polyurethane insulation boards covers the joint of the second layer of polyurethane insulation boards, and the second layer of polyurethane insulation boards covers the joint of the first layer of polyurethane insulation boards. The first layer of polyurethane insulation boards and the second layer of polyurethane insulation boards fit tightly together, and the water entering through the joint gap of the second layer of polyurethane insulation boards cannot reach the gap of the first layer of polyurethane insulation boards, so as to prevent rainwater from flowing into the house through the gap between the polyurethane insulation boards. Since the two layers of polyurethane insulation boards are interlocked and connected, there will be no relative movement between them, and no deformation and displacement will occur in the accumulated sun and rain, so the gap will not become larger and new gaps will not be generated, and the waterproof and heat-insulating functions will be realized for a long time.

[0010] When the first layer of polyurethane insulation board is laid horizontally and reaches the corner, the rubber waterproof layer is bent inward along the connection of the polyurethane insulation layer on the first layer of polyurethane insulation board. Since the polyurethane insulation layer is a connected isosceles right-angled triangular prism, only the rubber waterproof layer is connected at the connection, and it can be bent at this time. The adjacent polyurethane insulation layers at the bend are closely spliced ​​to form an isosceles right-angled triangular prism structure to match the corner, and then the first layer of polyurethane insulation board is laid three-dimensionally along the corner, and then the rubber waterproof layer is bent outward along the connection of the adjacent polyurethane insulation layer of the second layer of polyurethane insulation board. In this way, the second layer of polyurethane insulation board bent outward is completely matched with the first layer of polyurethane insulation board bent inward, and the bends form a plane and fit each other closely, and then the second layer of polyurethane insulation board is laid three-dimensionally along the corner. Not only does it make the bends standardized and neat, but it also does not leave gaps like the traditional laying method, and does not affect the thermal insulation effect.

[0011] Two thin ropes are set at each position. When the first layer of polyurethane insulation board is laid longitudinally to the corner, the excess size of the first layer of polyurethane insulation board is determined, and then the thin rope position near the corner of the wall is selected and raised upward, and the polyurethane insulation layer is vertically cut through the thin rope, and then another thin rope is pulled out along the surface of the rubber waterproof layer, and then the excess polyurethane insulation layer is cut off. At this time, there is only the rubber waterproof layer at the cutting position of the thin rope, which can be bent and matched. The rubber waterproof layer is bent inward along the fracture of the polyurethane insulation layer at the cutting position to make it match the corner of the wall, and then laid three-dimensionally along the corner of the wall. It can not only play the role of three-dimensional insulation of the wall and the roof, but also effectively cover the corner position to avoid water leakage. The rubber waterproof layer is soft, and at the same time resistant to high temperature, corrosion, and has good sealing performance.

[0012] When the lateral width of the polyurethane insulation board needs to be adjusted, first determine the position of the connection of the polyurethane insulation layer of the required corresponding length. Since the connection of the polyurethane insulation layer has a guiding function, the staff can use a knife to cut the rubber waterproof layer along the connection of the connected polyurethane insulation layer. When the longitudinal width of the polyurethane insulation board needs to be adjusted, first determine the position of the thin rope of the required corresponding length and pull the thin rope upward to cut the polyurethane insulation layer, and then the staff uses a knife to cut the rubber waterproof layer along the break. Cutting along the connection of the polyurethane insulation layer or the break of the thin rope makes the cross section more regular, avoiding waste and size discrepancies caused by irregular cutting.

[0013] The filling block is provided with a cutting groove perpendicular to the limiting groove, and the thin rope is cut upward from the cutting groove when cutting the thin rope. Cutting along the cutting groove is more convenient, and the knife can be prevented from damaging the isolation plate during cutting.

[0014] Among them, the upper pressing plate is provided with a handle, which is convenient for the staff to use the upper pressing plate to press the rubber waterproof layer on the isolation plate, and is also convenient for opening the upper pressing plate to take out the polyurethane insulation board and the isolation plate after foaming is completed.

[0015] Among them, pillars are fixed at the four corners of the shell to support the device during the foaming process.

[0016] Compared with the prior art, the present invention has the following beneficial effects: Firstly, the staggered laying method is adopted to lay two layers of polyurethane insulation boards one above the other. The first layer of polyurethane insulation boards covers the joints of the second layer of polyurethane insulation boards and fits tightly. Water entering through the joint gaps of the second layer of polyurethane insulation boards cannot reach the gaps of the first layer of polyurethane insulation boards, thereby preventing rainwater from flowing into the house through the gaps between the rubber waterproof layers.

[0017] Secondly, the polyurethane insulation layer is an isosceles right-angled triangular prism structure that is connected vertically. The side wall where the hypotenuse of the polyurethane insulation layer is located is connected to the rubber waterproof layer. A thin rope is provided between the polyurethane insulation layer and the rubber waterproof layer to achieve regular and rapid division to fit the roof as closely as possible. Since the two layers of polyurethane insulation boards are interlocked, there will be no relative movement between them, and they will not deform or shift due to the accumulated sun and rain, so there will be no enlargement of the gaps and the generation of new gaps, and the waterproof and heat-insulating functions will be achieved for a long time.

[0018] Thirdly, when laying the corners, the polyurethane insulation board can be bent in the longitudinal and transverse directions, and then can be laid three-dimensionally along the corners, which can not only play a three-dimensional insulation role at the connection between the wall and the roof, but also effectively cover the corners to avoid water leakage.

[0019] Fourthly, the two layers of polyurethane insulation board after staggered laying have the same thickness as the traditional single-layer insulation board, but have the above advantages. Not only does it not increase the space occupied, but it also effectively improves the waterproof effect and laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the polyurethane heat insulation board; Figure 2 Schematic diagram of the three-dimensional structure of the isolation plate; Figure 3 It is a schematic diagram of the three-dimensional structure when the thin rope is wound on the isolation plate; Figure 4 It is a schematic diagram of the three-dimensional structure of the foaming device; Figure 5 It is the left view of the internal structure of the foaming device; Figure 6 for Figure 5 A schematic diagram of the structure enlargement in the middle; Figure 7 It is a schematic diagram of the internal three-dimensional structure of the foaming device; Figure 8 It is a structural schematic diagram of the connection between the upper pressure plate and the side pressure plate; Fig. 9 for Figure 8 A magnified schematic diagram of the structure at B in the middle; Fig.10 This is a schematic diagram of the laying method of the polyurethane insulation board; Fig.11 This is a schematic diagram of the folding at the corner when the polyurethane insulation board is laid horizontally; Fig.12 This is a schematic diagram of the structure at the corner when the polyurethane insulation board is laid horizontally; Fig.13 This is the distribution diagram of the thin ropes inside the polyurethane insulation board; Fig.14 This is a schematic diagram of the structure at the corner when polyurethane insulation boards are laid longitudinally.

[0021] In the figure: 1. polyurethane insulation layer; 2. rubber waterproof layer; 3. thin rope; 4. shell; 5. upper pressure plate; 6. side pressure plate; 7. injection hole; 8. isolation plate; 9. filling block; 10. limit groove; 11. plug hole; 12. slide groove; 13. slide rod; 14. spring; 15. cutting groove; 16. handle; 17. column; 18. roof; 19. wall; 20. first layer of polyurethane insulation board; 21. second layer of polyurethane insulation board. DETAILED DESCRIPTION

[0022] The present invention will be more fully described below with reference to the accompanying drawings of examples of implementations of the present invention. However, the present invention may appear in many different forms and should not be construed as limited to the examples of implementation set forth herein, by which the present invention is made more complete; rather, these examples of implementation are provided in an exemplary manner so that the disclosure conveys the scope of the present invention to those skilled in the art. In addition, the drawings are merely schematic and not drawn to scale, and the same numbers always represent the same or similar elements or parts.

[0023] The embodiments of the present invention are further described below in conjunction with the accompanying drawings: like Figure 1-Figure 14 As shown, the roof waterproof and heat-insulating polyurethane insulation board that can be staggered and laid described in the present invention includes a polyurethane insulation layer 1 and a rubber waterproof layer 2. The polyurethane insulation layer 1 is an isosceles right-angled triangular prism structure that is connected and arranged longitudinally. The side wall where the hypotenuse of the polyurethane insulation layer 1 is located is connected to the rubber waterproof layer 2. Thin ropes 3 that are arranged equidistantly in the longitudinal direction are inserted between the polyurethane insulation layer 1 and the rubber waterproof layer 2.

[0024] A production process for a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner, comprising a foaming device, the foaming device comprising a shell 4, an upper pressure plate 5 and a side pressure plate 6 are hinged on the top and right side of the shell 4 respectively, the shell 4, the upper pressure plate 5 and the side pressure plate 6 form a closed foaming mold, a plurality of injection holes 7 are arranged on the left side of the shell 4, an isolation plate 8 is arranged in the shell 4, the isolation plate 8 is a repeatedly folded wave-like structure, the angle of the fold is 90°, the isolation plate 8 is matched with a polyurethane insulation layer 1, filling blocks 9 are arranged on both side ends of the isolation plate 8, the wide end of the filling block 9 and the corners on both sides of the isolation plate 8 are in the same plane, and the side of the filling block 9 is provided with equidistantly arranged limit grooves 10.

[0025] Working principle and process: During operation, first spray anti-stick coatings such as polytetrafluoroethylene, silicone coatings, etc. on the isolation plate 8. These coatings can form a smooth surface during the foaming process to prevent the isolation plate 8 from sticking to the polyurethane. Pass the thin rope 3 through the limiting grooves 10 on the filling block 9 and wrap around the isolation plate 8 and connect them end to end, and the thin rope 3 is inserted into the limiting grooves 10 corresponding to the filling blocks 9 on both sides. First, lay a rubber waterproof layer 2 on the bottom of the shell 4, and then lay the isolation plate 8 on the rubber waterproof layer 2. The size of the isolation plate 8 corresponds to the size of the inner cavity of the shell 4, and then lay another rubber waterproof layer 2 on the isolation plate 8. Then use the upper pressing plate 5 to press the rubber waterproof layer 2 on the isolation plate 8, and then fix the upper pressing plate 5 and the side pressing plate 6 to fix the upper pressing plate 5, the side pressing plate 6 and the shell 4 to form a closed foaming mold. The two rubber waterproof layers 2 form a foaming molding area with a spatial structure of an isosceles right-angled triangular prism with the isolation board 8. The foaming molding area corresponds to the injection hole 7 one by one. The polyurethane foam material is injected into the foaming molding area through the injection hole 7. The polyurethane rapidly foams and expands to form a polyurethane insulation layer 1 with a structure of an isosceles right-angled triangular prism in the foaming molding area. The bottom of the polyurethane insulation layer 1 is adhered to the rubber waterproof layer 2 to form a polyurethane insulation board. After the foaming is completed, open the upper pressure plate 5 and the side pressure plate 6, take out the polyurethane insulation board and the isolation board 8, cut off the thin ropes 3 on both sides of the filling block 9, and then pull out the isolation board 8 to obtain the upper and lower polyurethane insulation boards. The thin ropes 3 are arranged equidistantly in the longitudinal direction between the polyurethane insulation layer 1 and the rubber waterproof layer 2.

[0026] A further improvement to the above scheme is that a socket 11 is provided on the outer edge of the upper pressure plate 5, a slide groove 12 is provided on the side pressure plate 6, a slide rod 13 is provided in the slide groove 12, a spring 14 is provided at the bottom end of the slide rod 13, and the position of the socket 11 corresponds to that of the slide rod 13. During the foaming process, after the upper pressure plate 5 is pressed tightly against the rubber waterproof layer 2 above the isolation plate 8, the slide rod 13 is pressed and moved to compress the spring 14 so that the side pressure plate 6 and the upper pressure plate 5 are matched and connected, thereby forming a closed foaming mold with the housing 4, and then the slide rod 13 is released, and the spring 14 is reset to push the slide rod 13 into the socket 11 on the upper pressure plate 5 to form a fixed connection. After the foaming is completed, the slide rod 13 is pressed again to move the compressed spring 14 to release the connection between the upper pressure plate 5 and the side pressure plate 6.

[0027] When laying the polyurethane insulation board, first lay the rubber waterproof layer 2 close to the laying surface to lay the first layer of polyurethane insulation board 20, and then lay the second layer of polyurethane insulation board 21 at the joint of the polyurethane insulation layer 1 on the first layer of polyurethane insulation board 20 in a staggered manner. At this time, the polyurethane insulation layer 1 of the first layer of polyurethane insulation board 20 and the second layer of polyurethane insulation board 21 are closely fitted. The second layer of polyurethane insulation board 21 covers the joint of the first layer of polyurethane insulation board 20, and the first layer of polyurethane insulation board 20 covers the joint of the second layer of polyurethane insulation board 21. The first layer of polyurethane insulation board 20 and the second layer of polyurethane insulation board 21 are tightly fitted, and the water entering through the joint gap of the second layer of polyurethane insulation board 21 cannot reach the gap of the first layer of polyurethane insulation board 20, thereby preventing rainwater from flowing into the house through the gaps between the polyurethane insulation boards. Because the two layers of polyurethane insulation boards are interlocked and connected, there will be no relative movement between them, and they will not be deformed or displaced due to long-term exposure to the sun and rain. This will not cause the gaps to become larger or new gaps to form, thus achieving long-term waterproof and heat-insulating functions.

[0028] When the first layer of polyurethane insulation board 20 is laid horizontally and reaches the corner, the rubber waterproof layer 2 is bent inward along the connection of the polyurethane insulation layer 1 on the first layer of polyurethane insulation board 20. Since the polyurethane insulation layer 1 is a connected isosceles right-angled triangular prism, only the rubber waterproof layer 2 is connected at the connection, and it can be bent here. The adjacent polyurethane insulation layers 1 at the bending place are tightly spliced ​​to form a triangular prism structure that closely matches the corner, and then it is laid three-dimensionally along the corner, and the rubber waterproof layer 2 is bent outward along the connection of the adjacent polyurethane insulation layers 1 of the second layer of polyurethane insulation board 21. In this way, the second layer of polyurethane insulation board 21 bent outward is completely matched with the first layer of polyurethane insulation board 20 bent inward, and the bending places form planes and fit closely to each other. Then the second layer of polyurethane insulation board 21 is laid three-dimensionally along the corner, which not only makes the bending place standardized and neat, but also does not leave gaps like the traditional laying method, and does not affect the thermal insulation effect.

[0029] Two thin ropes 3 are provided at each position. When the first layer of polyurethane insulation board 20 is laid longitudinally and reaches the corner, the excess size of the first layer of polyurethane insulation board 20 is determined, and then the position of the thin rope 3 near the corner is selected and raised upward, and the polyurethane insulation layer 1 is vertically cut by the thin rope 3, and then another thin rope 3 is pulled out along the surface of the rubber waterproof layer 2, and then the excess polyurethane insulation layer 1 is cut off. At this time, there is only the rubber waterproof layer 2 at the cutting position of the thin rope 3, which can be bent and matched. The rubber waterproof layer 2 is bent inward along the broken part of the polyurethane insulation layer 1 at the cutting position to make it match the corner, and then it is laid three-dimensionally along the corner position to prevent water from entering the gap between the rubber waterproof layer 2 and the wall 19. It can not only play the role of three-dimensional insulation of the wall 19 and the roof 18, but also effectively cover the corner position to avoid water leakage. The rubber waterproof layer 2 is soft, and at the same time resistant to high temperature, corrosion and good sealing.

[0030] When the transverse width of the polyurethane insulation board needs to be adjusted, first determine the position of the connection of the polyurethane insulation layer 1 of the required corresponding length. Since the connection of the polyurethane insulation layer 1 has a guiding function, the staff can cut the rubber waterproof layer 2 with a knife along the connection of the connected polyurethane insulation layer 1. When the longitudinal width of the polyurethane insulation board needs to be adjusted, first determine the position of the thin rope 3 of the required corresponding length and raise the thin rope 3 upward to cut the polyurethane insulation layer 1, and then the staff cut the rubber waterproof layer 2 along the fracture with a knife. If the required length of the polyurethane insulation board is not an integer multiple of the width of the polyurethane insulation layer 1 or the distance between the thin ropes 3, it can be cut at the connection of the polyurethane insulation layer 1 or the thin rope 3 that is slightly longer than the required length, because the foamed polyurethane is porous and easy to be compressed, so that the required laying area can be completed by squeezing hard. The staff cuts along the connection of the polyurethane insulation layer 1 or the fracture of the polyurethane insulation layer 1 where the thin rope 3 is torn with a knife, and the cross section is more regular, avoiding the problem of waste and size discrepancy caused by direct non-standard cutting.

[0031] Among them, the filling block 9 is provided with a cutting groove 15 perpendicular to the limiting groove 10, and the thin rope 3 is cut upward from the cutting groove 15 when cutting the thin rope 3. Cutting along the cutting groove 15 is more convenient, and at the same time, it can prevent the knife from damaging the isolation plate 8 during cutting.

[0032] Among them, a handle 16 is provided on the upper pressing plate 5, which is convenient for the staff to use the upper pressing plate 5 to press the rubber waterproof layer 2 on the isolation plate 8, and is also convenient for opening the upper pressing plate 5 to take out the polyurethane insulation board and the isolation plate 8 after foaming is completed.

[0033] Among them, columns 17 are fixed at the four corners of the shell 4 to support the device during the foaming process.

Claims

1. A roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner, characterized in that: The invention comprises a polyurethane thermal insulation layer (1) and a rubber waterproof layer (2), wherein the polyurethane thermal insulation layer (1) is an isosceles right-angled triangular prism structure which is connected and arranged longitudinally, the side wall where the hypotenuse of the polyurethane thermal insulation layer (1) is located is connected to the rubber waterproof layer (2), and thin ropes (3) which are arranged longitudinally at equal intervals are provided between the polyurethane thermal insulation layer (1) and the rubber waterproof layer (2).

2. A production process for a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner according to claim 1, characterized in that: The foaming device comprises a shell (4), an upper pressure plate (5) and a side pressure plate (6) are hinged on the upper and right sides of the shell (4), respectively, the shell (4), the upper pressure plate (5) and the side pressure plate (6) form a closed foaming mold, a plurality of injection holes (7) are arranged on the left side of the shell (4), an isolation plate (8) is arranged inside the shell (4), the isolation plate (8) is a repeatedly folded wave-like structure, the angle of the folding part is 90°, the isolation plate (8) is matched with the polyurethane insulation layer (1), filling blocks (9) are arranged on both sides of the isolation plate (8), the wide ends of the filling blocks (9) are respectively in the same plane as the folding corners on both sides of the isolation plate (8), and the side of the filling block (9) is provided with a plurality of equally spaced limit grooves (10); First, spray an anti-stick coating on the isolation plate (8), pass the thin rope (3) through the limiting groove (10) on the filling block (9), wrap it around the isolation plate (8) and connect the end to the end, and insert the thin rope (3) into the limiting groove (10) corresponding to the filling block (9) at both ends; First, a rubber waterproof layer (2) is laid inside the housing (4), then an isolation board (8) is laid on the rubber waterproof layer (2), and then another rubber waterproof layer (2) is laid on the isolation board (8); Then, the rubber waterproof layer (2) is tightly pressed by an upper pressing plate (5), and the upper pressing plate (5), the side pressing plate (6) and the shell (4) are fixed to form a closed foaming mold, and the two rubber waterproof layers (2) and the isolation plate (8) form a plurality of foaming molding areas with a spatial structure of isosceles right-angled triangular prisms, and the foaming molding areas correspond to the injection holes (7) one by one; Polyurethane foaming material is injected into the foaming molding area through the injection holes (7), and the polyurethane rapidly foams and expands to form a polyurethane insulation layer (1) having an isosceles right-angled triangular prism structure in the foaming molding area, and the bottom of the polyurethane insulation layer (1) is adhered to the rubber waterproof layer (2) to form a polyurethane insulation board; After the foaming is completed, the upper pressing plate (5) and the side pressing plate (6) are opened, the polyurethane heat insulation board and the isolation board (8) are taken out, the thin rope (3) is cut along the cutting grooves (15) on both sides of the isolation board (8), and then the isolation board (8) is pulled out to obtain the upper and lower polyurethane heat insulation boards, and the thin rope (3) is arranged longitudinally equidistantly between the polyurethane heat insulation layer (1) and the rubber waterproof layer (2).

3. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner according to claim 2 is characterized in that: The upper pressure plate (5) is provided with a socket (11), the side pressure plate (6) is provided with a slide groove (12), the socket (11) cooperates with the slide groove (12), a slide rod (13) is provided in the slide groove (12), a spring (14) is provided at the bottom end of the slide rod (13), and the positions of the socket (11) and the slide rod (13) correspond.

4. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in a staggered manner according to claim 2 is characterized in that: When laying the polyurethane insulation board, the rubber waterproof layer (2) is firstly laid close to the ground and the first layer of polyurethane insulation board (20) is laid, and then the second layer of polyurethane insulation board (21) is laid offset at the joint of the laid first layer of polyurethane insulation board (20). At this time, the polyurethane insulation layer (1) of the first layer of polyurethane insulation board (20) and the second layer of polyurethane insulation board (21) are closely fitted.

5. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in an offset manner according to claim 2 is characterized in that: When the first layer of polyurethane insulation board (20) is laid horizontally and reaches the corner of the wall, the rubber waterproof layer (2) on the second layer of polyurethane insulation board (21) is bent inwardly. At this time, the adjacent polyurethane insulation layer (1) at the bend is tightly attached to form an isosceles right-angled triangular prism structure that matches the corner of the wall and fits tightly with the corner of the wall. Then, it is laid three-dimensionally along the corner of the wall. The rubber waterproof layer (2) is bent outwardly along the connection of the second layer of polyurethane insulation board (21). In this way, the second layer of polyurethane insulation board (21) bent outwardly is completely matched with the first layer of polyurethane insulation board (20) bent inwardly. The bends form a plane and fit tightly with each other. Then, the second layer of polyurethane insulation board (21) is laid three-dimensionally along the corner of the wall.

6. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in a staggered manner according to claim 2 is characterized by: Two thin ropes (3) are provided at each position. When the first layer of polyurethane insulation board (20) is laid longitudinally and reaches the corner, the excess size of the first layer of polyurethane insulation board (20) is determined, and then the position of the thin rope (3) close to the corner is selected and raised upward. The polyurethane insulation layer (1) is vertically cut by the thin rope (3), and then another thin rope (3) is pulled out along the surface of the rubber waterproof layer (2), and then the excess polyurethane insulation layer (1) is cut off. At this time, only the rubber waterproof layer (2) is left at the cutting position of the thin rope (3), and it can be bent to match. The rubber waterproof layer (2) is bent inward along the broken part of the polyurethane insulation layer (1) at the cutting position to match the corner, and then it is laid three-dimensionally along the corner position.

7. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in a staggered manner according to claim 2 is characterized by: When the lateral width of the polyurethane insulation board needs to be adjusted, the positions of adjacent polyurethane insulation layers (1) of corresponding lengths are determined, and the rubber waterproof layer (2) is cut along the connection between the adjacent polyurethane insulation layers (1).

8. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in a staggered manner according to claim 2 is characterized by: When the longitudinal width of the polyurethane heat insulation board needs to be adjusted, the position of the thin rope (3) of corresponding length is determined, the thin rope (3) is lifted upward, the polyurethane heat insulation layer (1) is cut, and the rubber waterproof layer (2) is cut along the broken part.

9. The production process of a roof waterproof and heat-insulating polyurethane insulation board that can be laid in a staggered manner according to claim 2, characterized in that: The filling block (9) is provided with a cutting groove (15) perpendicular to the limiting groove (10).

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