A self-adhesive waterproofing membrane

Abstract

The utility model discloses a kind of self-adhesive waterproof rolls, including main body pitch layer, the main body pitch layer lower end is fixedly installed with sticking device, the main body pitch layer upper end is fixedly installed with aluminium foil;The sticking device includes PE film, the PE film such as fixedly installed with several tear saw teeth, the PE film upper end is fixedly installed with modified pitch pressure-sensitive adhesive, the modified pitch pressure-sensitive adhesive upper end is fixedly installed with primer, the PE film is fixedly installed in the lower end of main body pitch layer by modified pitch pressure-sensitive adhesive and primer.The utility model can be soaked into main body pitch layer by primer, and then make modified pitch pressure-sensitive adhesive can be closely bonded with main body pitch layer, while modified pitch pressure-sensitive adhesive combines the high performance of modified pitch with the convenient construction characteristics of pressure-sensitive adhesive, pitch pressure-sensitive adhesive cohesive strength is high, material surface wettability is good, not only ultraviolet, high and low temperature and oxidation aging resistance, but also reduce the sensitivity to temperature.

Description

Technical Field

[0001] This utility model relates to the field of waterproof membrane technology, and in particular to a self-adhesive waterproof membrane. Background Technology

[0002] Waterproof membrane is a flexible waterproofing material used in buildings, underground engineering, roofs, and other applications. Because of its excellent water resistance, its performance remains largely unchanged under the influence of water, and its impermeability effectively prevents water damage to buildings and avoids water penetration into the building's interior. It is typically supplied in rolls and is laid, glued, or welded to form a continuous, seamless waterproof layer. Therefore, waterproof membrane plays an indispensable role in construction projects, and its superior performance ensures the waterproofing effect and service life of buildings.

[0003] However, existing waterproof membranes are easily affected by temperature, especially in summer. High temperatures can cause the waterproof membrane to crack and affect its use. In addition, the adhesive layer on the waterproof membrane is also easily affected by heat and may run, thus affecting the installation quality of the waterproof membrane. Utility Model Content

[0004] The main purpose of this utility model is to provide a self-adhesive waterproof membrane that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A self-adhesive waterproof membrane includes a main asphalt layer, an adhesive device fixedly installed at the lower end of the main asphalt layer, and an aluminum foil fixedly installed at the upper end of the main asphalt layer. The adhesive device includes a PE film, each of which has several tear-off teeth fixedly installed. A modified asphalt pressure-sensitive adhesive is fixedly installed at the upper end of the PE film, and a primer is fixedly installed at the upper end of the modified asphalt pressure-sensitive adhesive. The PE film is fixedly installed at the lower end of the main asphalt layer by the modified asphalt pressure-sensitive adhesive and the primer.

[0007] Preferably, a polyethylene film is fixedly installed at the lower end of the aluminum foil. The aluminum foil has a reflectivity of over 95% for heat radiation, effectively blocking heat transfer. This not only saves energy and reduces temperature, extending the service life of the main asphalt layer, but also provides a polyethylene film. The polyethylene film is chemically stable, does not corrode, and has good impact resistance, able to withstand a certain degree of external impact without breaking or being damaged. This not only improves the tensile strength and puncture resistance of the waterproof membrane, but also makes it suitable as a reinforcing layer for the waterproof membrane, further improving the quality of the reinforcing layer.

[0008] Preferably, polyester fibers are fixedly installed within the main asphalt layer. The polyester fibers are mixed within the main asphalt layer and form a three-dimensional network structure. Through a "reinforcing effect," this delays crack propagation, reduces thermal shrinkage cracks and reflective cracks. Furthermore, the polyester fibers can absorb free asphalt, increasing viscosity, reducing lateral displacement of aggregates, and improving high-temperature deformation resistance. Simultaneously, the polyester fibers allow the asphalt mixture to maintain flexibility at -40℃, increasing tensile strength by 15%-18%, effectively resisting shrinkage stress, and thus improving the strength of the waterproof membrane itself.

[0009] Preferably, the tearing saw teeth are triangular in shape. By integrating the tearing saw teeth with the PE film, not only is it convenient to tear off the PE film, but the tearing saw teeth can also effectively reduce deformation when the edges of the PE film expand or contract.

[0010] Preferably, the polyethylene film is laminated with the aluminum foil by hot pressing.

[0011] Preferably, the polyester fibers form a three-dimensional network structure within the main asphalt layer.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The aluminum foil design on the main asphalt layer has a reflectivity of over 95% for heat radiation, effectively blocking heat transfer. This not only saves energy and reduces temperature, extending the service life of the main asphalt layer, but also incorporates a polyethylene film. The polyethylene film is laminated to the aluminum foil through hot pressing. Specifically, a polyethylene coating is pre-coated onto the aluminum foil surface using special coating equipment, and molecular-level bonding is achieved after heating and pressurization. The polyethylene film is chemically stable, does not corrode, and has excellent impact resistance, capable of withstanding a certain degree of external impact without cracking or damage. This not only improves the tensile strength and puncture resistance of the waterproof membrane but also makes it suitable as a reinforcing layer for the waterproof membrane, further enhancing the quality of the reinforcing layer.

[0014] 2. By incorporating polyester fibers into the main asphalt layer and forming a three-dimensional network structure within it, the "reinforcement effect" slows down crack propagation, reduces thermal shrinkage cracks and reflective cracks. Furthermore, the polyester fibers can absorb free asphalt, increasing viscosity, reducing lateral displacement of aggregates, and improving high-temperature deformation resistance. At the same time, the polyester fibers enable the asphalt mixture to maintain flexibility at -40℃, increasing tensile strength by 15%-18%, effectively resisting shrinkage stress, and thus improving the strength of the waterproof membrane itself.

[0015] 3. The primer on the adhesive device can penetrate into the main asphalt layer, thereby enabling the modified asphalt pressure-sensitive adhesive to bond tightly to the main asphalt layer. At the same time, the modified asphalt pressure-sensitive adhesive combines the high performance of modified asphalt with the convenient construction characteristics of pressure-sensitive adhesive. The asphalt pressure-sensitive adhesive modified with natural rubber or SBS has high cohesive strength and good wettability to the material surface. It is not only resistant to ultraviolet rays, high and low temperatures and oxidative aging, maintaining the sealing effect for a long time, but also reduces the sensitivity to temperature. It is not easy to soften at high temperatures and not easy to crack at low temperatures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a self-adhesive waterproof membrane according to this utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the adhesive device for a self-adhesive waterproof membrane according to the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the aluminum foil in the self-adhesive waterproof membrane of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall structure of the main asphalt layer of the self-adhesive waterproof membrane of this utility model.

[0020] In the diagram: 1. Main asphalt layer; 2. Adhesive device; 3. Aluminum foil; 20. PE film; 21. Tearing saw teeth; 22. Modified asphalt pressure-sensitive adhesive; 23. Primer; 30. Polyethylene film; 40. Polyester fiber. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1-4 As shown, a self-adhesive waterproof membrane includes a main asphalt layer 1, an adhesive device 2 fixedly installed at the lower end of the main asphalt layer 1, and an aluminum foil 3 fixedly installed at the upper end of the main asphalt layer 1. The adhesive device 2 includes a PE film 20, each of which is fixedly equipped with several tearing saw teeth 21. A modified asphalt pressure-sensitive adhesive 22 is fixedly installed at the upper end of the PE film 20, and a primer 23 is fixedly installed at the upper end of the modified asphalt pressure-sensitive adhesive 22. The PE film 20 is fixedly installed at the lower end of the main asphalt layer 1 by the modified asphalt pressure-sensitive adhesive 22 and the primer 23.

[0025] A polyethylene film 30 is fixedly installed at the lower end of the aluminum foil 3; the polyethylene film 30 is laminated to the aluminum foil 3 by hot pressing. The aluminum foil 3 has a heat radiation reflectivity of over 95%, which can effectively block heat transfer, not only saving energy and cooling, and extending the service life of the main asphalt layer 1, but also has a polyethylene film 30 on it. The polyethylene film 30 is chemically stable, will not rust, and has good impact resistance, which can withstand a certain degree of external impact without breaking or being damaged. This not only improves the tensile strength and puncture resistance of the waterproof membrane, but also makes it suitable as a reinforcing layer for the waterproof membrane, further improving the quality of the reinforcing layer.

[0026] Polyester fibers 40 are fixedly installed within the main asphalt layer 1; the polyester fibers 40 form a three-dimensional network structure within the main asphalt layer 1. The polyester fibers 40, mixed within the main asphalt layer 1 and forming a three-dimensional network structure, delay crack propagation through a "reinforcing effect," reducing thermal shrinkage cracks and reflective cracks. Furthermore, the polyester fibers 40 can absorb free asphalt, increasing viscosity, reducing lateral displacement of aggregates, and improving high-temperature deformation resistance. Simultaneously, the polyester fibers 40 allow the asphalt mixture to maintain flexibility at -40℃, increasing tensile strength by 15%-18%, effectively resisting shrinkage stress, and thus improving the strength of the waterproof membrane itself.

[0027] The tear-off teeth 21 are triangular in shape. By integrating the tear-off teeth 21 with the PE film 20, it is not only convenient to tear off the PE film 20, but the tear-off teeth 21 can also effectively reduce deformation when the edges of the PE film 20 expand or contract.

[0028] It should be noted that this utility model is a self-adhesive waterproof membrane. The base adhesive 23 on the adhesive device 2 can penetrate into the main asphalt layer 1, thereby allowing the modified asphalt pressure-sensitive adhesive 22 to bond tightly to the main asphalt layer 1. Simultaneously, the modified asphalt pressure-sensitive adhesive 22 combines the high performance of modified asphalt with the convenient construction characteristics of pressure-sensitive adhesive. The asphalt pressure-sensitive adhesive modified with natural rubber or SBS has high cohesive strength and good surface wettability. It not only resists ultraviolet radiation, high and low temperatures, and oxidative aging, maintaining a long-term sealing effect, but also reduces temperature sensitivity, preventing softening at high temperatures and brittleness at low temperatures. The polyester fiber 40 is mixed into the main asphalt layer 1, forming a three-dimensional network structure within it. Through the "reinforcement effect," it delays crack propagation, reduces thermal shrinkage cracks and reflective cracks. Furthermore, the polyester fiber 40 can absorb free asphalt, increasing viscosity, reducing lateral displacement of aggregates, and improving high-temperature deformation resistance. Meanwhile, polyester fiber 40 allows the asphalt mixture to maintain its flexibility at -40℃, increasing tensile strength by 15%-18%, effectively resisting shrinkage stress, and thus improving the strength of the waterproof membrane itself. At the same time, the aluminum foil 3 has a heat radiation reflectivity of over 95%, effectively blocking heat transfer, which not only saves energy and reduces temperature, but also extends the service life of the main asphalt layer 1. In addition, a polyethylene film 30 is also set on the aluminum foil 3. The polyethylene film 30 is composited with the aluminum foil 3 by hot pressing. That is, a polyethylene coating is pre-coated on the surface of the aluminum foil 3 through special coating equipment, and molecular-level bonding is achieved after heating and pressurization. The polyethylene film 30 is chemically stable, does not rust, and has good impact resistance, which can withstand a certain degree of external impact without breaking or being damaged. This not only improves the tensile strength and puncture resistance of the waterproof membrane, but also makes it suitable as a reinforcing layer for the waterproof membrane, further improving the quality of the reinforcing layer.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A self-adhesive waterproof membrane, comprising a main bitumen layer (1), characterized in that: An adhesive device (2) is fixedly installed at the lower end of the main asphalt layer (1), and an aluminum foil (3) is fixedly installed at the upper end of the main asphalt layer (1). The adhesive device (2) includes a PE film (20), and a number of tearing saw teeth (21) are fixedly installed on the PE film (20). A modified asphalt pressure-sensitive adhesive (22) is fixedly installed at the upper end of the PE film (20), and a primer (23) is fixedly installed at the upper end of the modified asphalt pressure-sensitive adhesive (22). The PE film (20) is fixedly installed at the lower end of the main asphalt layer (1) by the modified asphalt pressure-sensitive adhesive (22) and the primer (23).

2. The self-adhesive waterproof membrane according to claim 1, characterized in that: A polyethylene film (30) is fixedly installed at the lower end of the aluminum foil (3).

3. The self-adhesive waterproof membrane according to claim 1, characterized in that: Polyester fibers (40) are fixedly installed inside the main asphalt layer (1).

4. The self-adhesive waterproof membrane according to claim 1, characterized in that: The tearing saw teeth (21) are triangular in shape.

5. The self-adhesive waterproof membrane according to claim 2, characterized in that: The polyethylene film (30) is bonded to the aluminum foil (3) by hot pressing.

6. The self-adhesive waterproof membrane according to claim 3, characterized in that: The polyester fibers (40) form a three-dimensional network structure within the main asphalt layer (1).

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