Waterproof coiled material with tight lap joint

Abstract

When two adjacent waterproof coiled materials are in lap joint, a modified asphalt adhesion layer and lap joint protruding strips on the adhesion bottom face of the upper-layer coiled material need to be heated and melted, and then the modified asphalt adhesion layer and the lap joint protruding strips are adhered to the lap joint face of the protection surface of the lower-layer coiled material. And meanwhile, after being subjected to hot melting and softening, the lap joint convex strips of the upper-layer coiled material can be filled and adhered into the lap joint grooves and the clamping grooves of the lower-layer coiled material through rolling of the pressing roller, so that the sealing performance of the lap joint seams between the two adjacent waterproof coiled materials is enhanced. The anti-corrosion layer is arranged on the upper surface of the waterproof layer, so that rainwater with corrosive substances can be blocked out of the anti-corrosion layer, and the situation that a small amount of water permeates into the waterproof roll to affect the waterproof performance of the roll due to the fact that the rainwater with the corrosive substances makes contact with the waterproof layer for a long time and is damaged is avoided.

Description

Technical Field

[0001] This application relates to the technical field of waterproof coiled materials, and particularly to a waterproof coiled material with tight lap joints. Background Art

[0002] A waterproof coiled material is a flexible building material product that can be coiled, mainly used for building walls, roofs, tunnels, roads, landfills, etc. to resist the leakage of external rainwater and groundwater. It is a leak-free connection between the engineering foundation and the building, constituting the primary barrier for the overall project waterproofing. Waterproof coiled materials are mainly divided into asphalt waterproof coiled materials and polymer waterproof coiled materials according to the materials, and should possess good water resistance, temperature stability, mechanical strength, extensibility, fracture resistance, flexibility, and atmospheric stability. In addition, the waterproof coiled material should also have characteristics such as aging resistance, penetration resistance, puncture resistance, tensile resistance, firm adhesion, and convenient construction to ensure its effectiveness and service life in building waterproofing.

[0003] When some existing waterproof coiled materials encounter rainy days, corrosive substances in the air will fall with the rain and adhere to the surface of the coiled material. Under the long-term corrosion effect, a small amount of water may penetrate into the interior of the coiled material. After being exposed to sunlight, the coiled material is prone to bulging and the lap joints are prone to curling, which may cause rainwater to seep into the wall through the cracks, leading to water leakage problems. In addition, when workers lay the coiled material, in the face of a base layer with a complex shape, multiple coiled materials often need to be overlapped. However, the bonding at the overlapping part of the coiled materials is difficult, making it difficult to achieve absolute sealing at the lap joints, increasing the hidden danger of water leakage. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of this application is to provide a waterproof coiled material with tight lap joints to solve the problems raised in the above background art.

[0005] According to one aspect of the present application, a waterproof coiled material with tight lap joints, the waterproof coiled material includes a carcass layer, a modified asphalt adhesion layer, a waterproof layer, an anti-corrosion layer, a strengthening layer, a heat insulation layer and a protective layer. The lower surface of the carcass layer is provided with a modified asphalt adhesion layer, the upper surface of the carcass layer is provided with a waterproof layer, the upper surface of the waterproof layer is provided with an anti-corrosion layer, the upper surface of the anti-corrosion layer is provided with a strengthening layer, the upper surface of the strengthening layer is provided with a heat insulation layer, and the upper surface of the heat insulation layer is provided with a protective layer. The lower part of the modified asphalt adhesion layer is the adhesion bottom surface, and the upper part of the protective layer is the protective surface. At least one set of lap joints grooves are opened on the protective surface of the waterproof coiled material near the four peripheral edges. At least one set of lap joints ridges are fixedly provided on the adhesion bottom surface of the waterproof coiled material near the four peripheries. The ends of the lap joints ridges and the lap joints grooves extend to the peripheral side surface of the waterproof coiled material, and the setting positions of the lap joints ridges and the lap joints grooves are arranged in an up-and-down corresponding manner. The material of the lap joints ridges is modified asphalt material and is integrally formed with the modified asphalt adhesion layer. A release film is provided on the lower surfaces of the modified asphalt adhesion layer and the lap joints ridges.

[0006] Preferably, clamping grooves are recessed on both sides of the inner side wall of the lap joints groove, and a waterproof coating is provided on the surfaces of the lap joints groove and the clamping grooves. When the lap joints ridge is softened by heat melting, the lap joints ridge can be filled into the lap joints groove and the clamping grooves.

[0007] Preferably, the groove depth of the lap joints groove and the thickness of the lap joints ridge are 0.5 mm to 1 mm. The distances between the lap joints groove and the lap joints ridge near the long side of the waterproof coiled material and the long side of the waterproof coiled material are both greater than 4 cm, and the distances between the lap joints groove and the lap joints ridge near the short side of the waterproof coiled material and the short side of the waterproof coiled material are both greater than 5 cm.

[0008] Preferably, the waterproof layer is made of butyl rubber material.

[0009] Preferably, the anti-corrosion layer is made of polypropylene material.

[0010] Preferably, the strengthening layer is made of glass fiber material.

[0011] Preferably, the heat insulation layer is made of aluminum foil material, and the upper and lower surfaces of the heat insulation layer are respectively heat-melted and bonded to the protective layer and the strengthening layer through hot melt adhesive.

[0012] Preferably, the protective layer is made of high-strength woven cloth material.

[0013] Preferably, the release film is selected from silicon oil paper or polyethylene film material.

[0014] Preferably, the base course is made of long-fiber polyester non-woven fabric material.

[0015] The advantages of this application compared with the prior art are as follows: For a waterproof coiled material with tight lap joints in this application, by providing lap grooves and lap ridges corresponding to the four perimeters of the upper and lower surfaces of the waterproof coiled material, when laying and lapping the waterproof coiled material, the adhesion bottom surface of the waterproof coiled material is heated and melted, so that the modified asphalt adhesion layer and the lap ridge are melted and softened. As a result, the modified asphalt adhesion layer can tightly adhere to the surface of the building base in contact, and the modified asphalt adhesion layer can tightly adhere to the protective surface of the adjacent waterproof coiled material in the lap joint. Moreover, the lap ridge after being melted and softened can correspondingly fill and adhere to the lap groove and its card slot on the protective surface of the adjacent waterproof coiled material. Then, after the lap ridge cools and solidifies, it can tightly adhere and connect with the lap groove and its card slot, ensuring good sealing performance at the lap joint of the waterproof coiled material; by providing an anti-corrosion layer on the upper surface of the waterproof layer, and a strengthening layer and a protective layer on the upper surface of the anti-corrosion layer, rainwater with corrosive substances can be blocked outside the anti-corrosion layer, avoiding the rainwater with corrosive substances from contacting the waterproof layer for a long time and causing it to break, resulting in a small amount of water seeping into the interior of the waterproof coiled material and affecting the waterproof performance of the coiled material. In addition, the strengthening layer and the protective layer can enhance the strength and puncture resistance of the waterproof coiled material itself, preventing foreign objects from damaging the anti-corrosion layer and the waterproof layer of the coiled material and affecting the waterproof performance of the coiled material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the protective surface of a waterproof coiled material with tight lap joints according to an embodiment of the present application.

[0017] Figure 2 is Figure 1 a schematic enlarged view of the structure of part A in

[0018] Figure 3 is a perspective view of the adhesion bottom surface of a waterproof coiled material with tight lap joints according to an embodiment of the present application.

[0019] Figure 4 is Figure 3 a schematic enlarged view of the structure of part B in

[0020] Figure 5 is a schematic view of the structure of the lap joint of a waterproof coiled material with tight lap joints according to an embodiment of the present application.

[0021] Figure 6 is a schematic view of the composition structure of a waterproof coiled material with tight lap joints according to an embodiment of the present application.

[0022] Reference numerals: 1, waterproof coiled material; 2, base ply; 3, modified asphalt adhesion layer; 4, waterproof layer; 5, anticorrosive layer; 6, strengthening layer; 7, heat insulation layer; 8, protective layer; 9, isolation film; 10, lapping groove; 101, card slot; 11, lapping rib. Detailed implementation mode

[0023] In order to make the content of this application easier to be clearly understood, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the Figure 6 accompanying drawings, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0024] As Figures 1 to 6As shown in the figure, a waterproof coiled material with close lap joint. The waterproof coiled material 1 includes a carcass layer 2, a modified asphalt adhesion layer 3, a waterproof layer 4, an anti-corrosion layer 5, a strengthening layer 6, a heat insulation layer 7 and a protective layer 8. The lower surface of the carcass layer 2 is provided with a modified asphalt adhesion layer 3, the lower surface of the modified asphalt adhesion layer 3 is provided with a release film 9, the upper surface of the carcass layer 2 is provided with a waterproof layer 4, the upper surface of the waterproof layer 4 is provided with an anti-corrosion layer 5, the upper surface of the anti-corrosion layer 5 is provided with a strengthening layer 6, the upper surface of the strengthening layer 6 is provided with a heat insulation layer 7, and the upper surface of the heat insulation layer 7 is provided with a protective layer 8; Specifically, the carcass layer 2 is made of long-fiber polyester non-woven fabric. The long-fiber polyester non-woven fabric has high strength, good ductility, weather resistance, stability, chemical resistance, and low cost. As the carcass of the modified asphalt waterproof coiled material 1, it can provide the necessary strength and ductility, while ensuring the overall performance and service life of the coiled material; The modified asphalt adhesion layer 3 is made of modified asphalt. The modified asphalt has good elasticity, durability and adhesion. Therefore, after being heated and melted, the modified asphalt can firmly adhere to the surface of the building base layer and the lap joint surface with the adjacent waterproof coiled material 1; The release film 9 is selected from siliconized paper or polyethylene film materials to prevent the coiled material from sticking when it is curled. And during construction, the release film 9 will be heated and melted and adhere to the modified asphalt adhesion layer 3 together to make the coiled material firmly adhere to the base layer; The waterproof layer 4 is made of butyl rubber. The butyl rubber has good airtightness and watertightness, can effectively prevent the penetration of moisture and gas, and ensure the long-term waterproof performance of the waterproof layer 4. The butyl rubber also has good adhesion performance and can form a firm waterproof layer 4 with good adhesion to the carcass layer 2; The anti-corrosion layer 5 is made of polypropylene. The polypropylene has excellent anti-corrosion performance and can prevent acid rain and other corrosive substances from eroding the building structure; The strengthening layer 6 is made of glass fiber. The glass fiber has high strength, good heat resistance, corrosion resistance, and dimensional stability, can significantly improve the overall performance of the waterproof coiled material 1, and make it suitable for various complex and harsh environmental conditions. The glass fiber is a high-quality reinforcing material in the waterproof coiled material 1 and can provide long-term reliable waterproof protection; The heat insulation layer 7 is made of aluminum foil material, and the upper and lower surfaces of the heat insulation layer 7 are respectively heat-melted and adhered to the protective layer 8 and the strengthening layer 6 through hot melt adhesive. The aluminum foil material has a high reflectivity and a low thermal conductivity, can effectively reflect heat, reduce heat conduction, and play a role in heat insulation; The protective layer 8 is made of high-strength woven fabric material. The high-strength woven fabric is usually made of high-strength synthetic fibers. As the puncture-proof layer of the waterproof coiled material 1, with its excellent properties such as high tensile strength, puncture resistance, chemical corrosion resistance and weather resistance, it can effectively protect the waterproof layer 4 from physical and chemical damage, and enhance the overall strength and durability of the waterproof coiled material 1.In addition, below the modified asphalt adhesion layer 3 of the waterproof coiled material 1 is an adhesion bottom surface for adhering to the surface of the building base layer, and above the protective layer 8 of the waterproof coiled material 1 is a protective surface for preventing the waterproof coiled material 1 from being damaged. At least one set of lapping grooves 10 (such as Figure 1 and Figure 2 shown) are provided near the four peripheral edges on the protective surface of the waterproof coiled material 1. At least one set of lapping ridges 11 (such as Figure 3 and Figure 4 shown) are fixedly provided near the four sides on the adhesion bottom surface of the waterproof coiled material 1. The ends of the lapping ridges 11 and the lapping grooves 10 both extend to the peripheral side surface of the waterproof coiled material 1, and the setting positions of the lapping ridges 11 and the lapping grooves 10 are arranged in an up-and-down corresponding manner. The lapping ridges 11 are made of modified asphalt material and are integrally formed with the modified asphalt adhesion layer 3. On both sides of the inner side wall of the lapping groove 10, card slots 101 are recessed. When two adjacent waterproof coiled materials 1 are lapped, it is necessary to heat and melt the modified asphalt adhesion layer 3 and the lapping ridges 11 on the adhesion bottom surface of the upper coiled material and then adhere them to the lapping surface of the protective surface of the lower coiled material, so that the lapping surface between the upper waterproof coiled material 1 and the lower waterproof coiled material 1 is tightly adhered and connected to seal the lapping joint. At the same time, after the lapping ridges 11 of the upper coiled material are melted and softened, they can be filled and adhered into the lapping grooves 10 and their card slots 101 of the lower coiled material through rolling with a roller, thereby enhancing the sealing performance of the lapping joint between two adjacent waterproof coiled materials 1. In addition, a waterproof coating is provided on the surfaces of the lapping grooves 10 and the card slots 101, thereby preventing water from seeping into the lapping grooves 10 of the upper waterproof coiled material 1, and part of the water can also be drained away through the lapping grooves 10, avoiding the long-term accumulation of water.

[0025] In one embodiment, the groove depth of the lapping groove 10 and the thickness of the lapping rib 11 are 0.5 mm to 1 mm. This design ensures that the groove depth of the lapping groove 10 is neither too deep nor too shallow, enabling stable filling and adhesion connection with the lapping rib 11 while not damaging the structural stability of the waterproofing membrane 1 itself (the thickness of the modified bitumen waterproofing membrane 1 is not less than 3 mm). This design also ensures that the thickness of the lapping rib 11 is neither too thick nor too thin, enabling stable filling and adhesion connection with the lapping groove 10 and, after heating and melting, being rolled flat onto the surface of the building substrate together with the modified bitumen adhesive layer 3 by a roller without causing protrusions on the waterproofing membrane 1. Since there are long-side laps and short-side laps in the lapping method of the waterproofing membrane 1, during construction, the specification requirements for the lapping width of the waterproofing membrane 1 are that the longitudinal lapping width of the membrane should be greater than or equal to 8 cm for long-side laps and the lapping width of the membrane should be greater than or equal to 10 cm for short-side laps. Therefore, in the design, the distances between the lapping groove 10 and the lapping rib 11 and the long side of the waterproofing membrane 1 near the long-side edge of the waterproofing membrane 1 are both greater than 4 cm, and the distances between the lapping groove 10 and the lapping rib 11 and the short side of the waterproofing membrane 1 near the short-side edge of the waterproofing membrane 1 are both greater than 5 cm. Thus, when two adjacent waterproofing membranes 1 are lapped, the long-side lapping width can be greater than 8 cm and the short-side lapping width can be greater than 10 cm.

[0026] In the above design, by correspondingly arranging the lapping groove 10 and the lapping rib 11 around the upper and lower surfaces of the waterproofing membrane 1, when the waterproofing membrane 1 is laid and lapped, the adhesive bottom surface of the waterproofing membrane 1 is heated and melted, causing the modified bitumen adhesive layer 3 and the lapping rib 11 to melt and soften. As a result, the modified bitumen adhesive layer 3 can adhere tightly to the surface of the contacted building substrate, and the modified bitumen adhesive layer 3 can adhere tightly to the protective surface of the adjacent lapped waterproofing membrane 1. Moreover, the melted and softened lapping rib 11 can be correspondingly filled and adhered into the lapping groove 10 and its card slot 101 on the protective surface of the adjacent waterproofing membrane 1. After the lapping rib 11 cools and solidifies, it can adhere tightly to the lapping groove 10 and its card slot 101, ensuring good sealing at the lapping joint of the waterproofing membrane 1. By providing the anti-corrosion layer 5 on the upper surface of the waterproof layer 4 and the reinforcing layer 6 and the protective layer 8 on the upper surface of the anti-corrosion layer 5, rainwater with corrosive substances can be blocked outside the anti-corrosion layer 5, preventing rainwater with corrosive substances from contacting the waterproof layer 4 for a long time and causing it to break, resulting in a small amount of water seeping into the interior of the waterproofing membrane 1 and affecting the waterproof performance of the membrane. Additionally, the reinforcing layer 6 and the protective layer 8 can enhance the strength and puncture resistance of the waterproofing membrane 1 itself, preventing external objects from damaging the anti-corrosion layer 5 and the waterproof layer 4 of the membrane and affecting the waterproof performance of the membrane.

[0027] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that, without departing from the spirit and scope defined by the claims of the present application, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features.

Claims

1. A waterproof coiled material with close lap joints, wherein the waterproof coiled material (1) comprises a base ply (2), a modified asphalt adhesion layer (3), a waterproof layer (4), an anti-corrosion layer (5), a strengthening layer (6), a heat insulation layer (7) and a protective layer (8), and is characterized in that, A modified asphalt adhesion layer (3) is provided on the lower surface of the base course (2). A waterproof layer (4) is provided on the upper surface of the base course (2). An anti-corrosion layer (5) is provided on the upper surface of the waterproof layer (4). A strengthening layer (6) is provided on the upper surface of the anti-corrosion layer (5). A heat insulation layer (7) is provided on the upper surface of the strengthening layer (6). A protective layer (8) is provided on the upper surface of the heat insulation layer (7). The lower surface of the modified asphalt adhesion layer (3) is the adhesion bottom surface, and the upper surface of the protective layer (8) is the protective surface. At least one set of lapping grooves (10) are provided on the protective surface of the waterproof coil (1) near the four peripheral edges. At least one set of lapping ridges (11) are fixedly provided on the adhesion bottom surface of the waterproof coil (1) near the four peripheries. The ends of the lapping ridges (11) and the lapping grooves (10) extend to the peripheral side surface of the waterproof coil (1), and the setting positions of the lapping ridges (11) and the lapping grooves (10) are arranged in an up-and-down corresponding manner. The lapping ridges (11) are made of modified asphalt material and are integrally formed with the modified asphalt adhesion layer (3). A release film (9) is provided on the lower surfaces of the modified asphalt adhesion layer (3) and the lapping ridges (11).

2. The waterproof coiled material with tight lap joint according to claim 1, characterized in that, On both sides of the inner side wall of the lapping groove (10), clamping grooves (101) are recessed. A waterproof coating is provided on the surfaces of the lapping groove (10) and the clamping grooves (101). When the lapping ridges (11) are softened by heat melting, the lapping ridges (11) can be filled into the lapping groove (10) and the clamping grooves (101).

3. The waterproof coiled material with tight lap joint according to claim 2, characterized in that, The depth of the lapping groove (10) and the thickness of the lapping ridge (11) are 0.5 mm to 1 mm. The distances between the lapping groove (10) and the lapping ridge (11) near the long side of the waterproof coil (1) and the long side of the waterproof coil (1) are both greater than 4 cm. The distances between the lapping groove (10) and the lapping ridge (11) near the short side of the waterproof coil (1) and the short side of the waterproof coil (1) are both greater than 5 cm.

4. A waterproof coiled material with tight lap joint according to claim 1, characterized in that, The waterproof layer (4) is made of butyl rubber material.

5. A waterproof coil with tight lap joint according to claim 1, characterized in that, The anti-corrosion layer (5) is made of polypropylene material.

6. A waterproof coiled material with tight lap joint according to claim 1, characterized in that, The strengthening layer (6) is made of glass fiber material.

7. The waterproof coiled material with tight lap joint according to claim 1, characterized in that, The heat insulation layer (7) is made of aluminum foil material, and the upper and lower surfaces of the heat insulation layer (7) are respectively heat-melted and bonded to the protective layer (8) and the strengthening layer (6) by hot melt adhesive.

8. A waterproof coil with tight lap joint according to claim 1, characterized in that, The protective layer (8) is made of high-strength woven fabric material.

9. A waterproof coiled material with tight lap joint according to claim 1, characterized in that, The release film (9) is selected from silicon oil paper or polyethylene film material.

10. A waterproof coiled material with tight lap joint according to claim 1, characterized in that, The base course (2) is made of long-fiber polyester non-woven fabric material.

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