EPDM waterproofing membrane with lap edge

Abstract

The utility model relates to the field of building waterproof, especially a kind of EPDM waterproofing membrane with lap joint edge.A kind of EPDM waterproofing membrane with lap joint edge, including the lap joint structure of being set in the lap joint edge of first waterproofing membrane and second waterproofing membrane, lap joint structure is the adhesive layer of being set in the lap joint face of first waterproofing membrane and second waterproofing membrane, the stable layer is set at the adhesive layer, gauze layer is fixed in lap joint edge by adhesive layer.The utility model can realize the lap joint of waterproofing membrane by adhesive layer after tearing open film, it is convenient and fast to use;By stable layer, it can be assisted with self-adhesive glue evenly coated in lap joint face, ensure the even splicing of lap joint face, to overcome the defect that waterproofing membrane has elasticity, leading to self-adhesive glue cannot be evenly coated;By upper lap joint layer and lower lap joint layer lap joint, the thickness of lower lap joint layer and upper lap joint layer after lap joint is consistent with the thickness of waterproofing membrane, to ensure the evenness of lap joint position.

Description

Technical Field

[0001] This utility model relates to the field of building waterproofing, and in particular to a EPDM waterproof membrane with overlapping edges. Background Technology

[0002] As the construction industry continues to raise its requirements for the quality and efficiency of waterproofing projects, the construction process of EPDM waterproof membranes has become one of the key areas of focus in the industry. Among them, the splicing quality between membranes directly determines the sealing performance and reliability of the overall waterproofing system, and is the core link affecting the effectiveness of waterproofing projects.

[0003] Currently, the mainstream EPDM waterproof membranes on the market generally use the traditional "double-sided adhesive" process during actual construction and splicing. The specific operation procedure is as follows: First, the construction personnel need to pre-cut the individual double-sided adhesive strips to a length that matches the overlap edge of the membrane. Then, peel off the protective film on one side of the double-sided adhesive and accurately stick it to the overlap edge surface of one roll of EPDM waterproof membrane, ensuring that the double-sided adhesive is aligned with the overlap edge and adhered flat, avoiding air bubbles or misalignment. Next, align the edge of the other roll of EPDM waterproof membrane to be spliced ​​with the overlap edge of the double-sided adhesive, peel off the protective film on the other side of the double-sided adhesive, and finally press manually to ensure that the edges of the two rolls of membrane are tightly adhered to the double-sided adhesive, completing the splicing operation.

[0004] However, this method of splicing using double-sided tape has many insurmountable technical drawbacks, specifically as follows: Firstly, the operation process is cumbersome and the construction efficiency is low. The splicing process involves multiple additional steps, such as cutting double-sided tape, positioning and pasting, and removing protective film. Each step requires precise operation by the construction personnel, which not only increases the complexity of the construction process but also prolongs the splicing time of a single section of roll material.

[0005] Secondly, additional double-sided adhesive material is required, increasing project costs. In traditional splicing processes, double-sided adhesive is used as an independent auxiliary splicing material, requiring additional purchase and storage based on the construction area of ​​the waterproof membrane. Furthermore, during actual construction, improper cutting or incorrect application of the double-sided adhesive can lead to waste, further increasing the material costs of the project.

[0006] Thirdly, traditional double-sided tape has a five-layer structure: release film - self-adhesive - substrate - self-adhesive - release film. It is relatively thick and has limited adhesive strength.

[0007] Therefore, there is an urgent need to develop a EPDM waterproof membrane with overlapping edges to solve the above-mentioned technical problems. Summary of the Invention

[0008] In order to overcome the shortcomings of the prior art, the present invention provides a EPDM waterproof membrane with overlapping edges.

[0009] An EPDM waterproof membrane with an overlapping edge includes an overlapping structure disposed at the overlapping edge of a first waterproof membrane and a second waterproof membrane. The overlapping structure is an adhesive layer disposed at the overlapping surface of the first waterproof membrane and the second waterproof membrane. A stabilizing layer is disposed at the adhesive layer, and a gauze layer is fixed to the overlapping edge through the adhesive layer.

[0010] To further explain, the stabilizing layer is a non-elastic striped mesh gauze.

[0011] To further explain, an upwardly recessed upper overlap layer is provided at the bottom of the first waterproof membrane overlap position, and the upper overlap layer extends to the edge of the first waterproof membrane overlap edge.

[0012] To further explain, a downwardly recessed lower overlap layer is provided at the top of the second waterproof membrane overlap position. The lower overlap layer is located below the upper overlap layer and extends to the edge of the second waterproof membrane overlap edge. The stabilizing layer and adhesive layer are provided above the upper overlap layer.

[0013] To further explain, a tearable film is provided on top of the adhesive layer.

[0014] To further explain, both the first and second waterproof membranes have a polyester fiber nonwoven fabric reinforcement layer at the bottom.

[0015] The beneficial effects of this utility model are as follows: By tearing open the film, the waterproof membrane can be overlapped through the adhesive layer, making it convenient and quick to use; the stabilizing layer helps to evenly apply the self-adhesive to the overlapping surface, ensuring a smooth splicing of the overlapping surface, thus overcoming the defect that the waterproof membrane is elastic, which makes it impossible to evenly apply the self-adhesive; by overlapping the lower overlapping layer with the upper overlapping layer, the thickness of the lower overlapping layer after overlapping with the upper overlapping layer is consistent with the thickness of the waterproof membrane, thus ensuring the flatness of the overlapping position. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This utility model Figure 1 The main view.

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle.

[0019] The markings in the attached diagram are as follows: 1: First waterproof membrane, 1a: Upper overlap layer, 2: Second waterproof membrane, 2a: Lower overlap layer, 3: Overlap structure, 31: Reinforcing layer, 32: Adhesive layer, 33: Film, 4: Polyester fiber nonwoven fabric reinforcement layer. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0021] Example: A type of EPDM waterproof membrane with overlapping edges, such as... Figures 1-3 As shown, it includes an overlap structure 3 disposed at the overlap edge of the first waterproof membrane 1 and the second waterproof membrane 2. The overlap structure 3 is an adhesive layer 32 disposed on the overlap surface of the first waterproof membrane 1 and the second waterproof membrane 2. The adhesive layer 32 is a layer of self-adhesive disposed on the overlap surface of the first waterproof membrane 1 and the second waterproof membrane 2. A stabilizing layer 31 is disposed at the adhesive layer 32. The stabilizing layer 31 is fixed to the overlap edge by the adhesive layer 32. Because the waterproof membrane is elastic, when the self-adhesive is applied to the overlap surface, it cannot be applied evenly due to the elasticity of the overlap surface, which easily causes wrinkles and makes the self-adhesive surface of the overlap surface uneven, affecting the subsequent overlap. The stabilizing layer 31 can help to evenly apply the self-adhesive to the overlap surface and ensure a smooth splicing of the overlap surface.

[0022] like Figure 3 As shown, the stabilizing layer 31 is a non-elastic strip of mesh gauze. When applying the adhesive layer 32, the gauze is placed above the overlapping surface, and the self-adhesive is applied from above the gauze, penetrating the overlapping surface through the gauze to form the adhesive layer 32. At the same time, the gauze is fixed to the overlapping surface, which plays a role in shaping and reinforcing the self-adhesive.

[0023] like Figure 3 As shown, an upwardly recessed upper overlapping layer 1a is provided at the bottom of the overlap position of the first waterproof membrane 1, and the upper overlapping layer 1a extends to the edge of the overlap edge of the first waterproof membrane 1. A downwardly recessed lower overlapping layer 2a is provided at the top of the overlap position of the second waterproof membrane 2, and the lower overlapping layer 2a extends to the edge of the overlap edge of the second waterproof membrane 2. The lower overlapping layer 2a is located below the upper overlapping layer 1a. The adhesive layer 32 and the stabilizing layer 31 are provided on the top of the lower overlapping layer 2a. The thickness of the lower overlapping layer 2a after overlapping with the upper overlapping layer 1a is the same as the thickness of the waterproof membrane, thereby ensuring the flatness of the overlap position.

[0024] like Figure 3As shown, the top of the adhesive layer 32 is provided with a tearable film 33. When overlapping the waterproof membrane, the film 33 is first torn off and then the overlap is performed. When the waterproof membrane is not in use, the film 33 protects the adhesive layer 32, thereby preventing the adhesive layer 32 from connecting with non-adhesive positions, which would cause the adhesive layer 32 to fail.

[0025] like Figures 1-3 As shown, both the first waterproof membrane 1 and the second waterproof membrane 2 are provided with a polyester fiber nonwoven fabric reinforcement layer 4 at the bottom. The polyester fiber nonwoven fabric reinforcement layer 4 gives the waterproof membrane a buffer force in the vertical direction, thus protecting the waterproof membrane.

[0026] In summary, a new type of EPDM waterproof membrane with overlapping edges adopts a two-layer structure of self-adhesive and release film. The bonding strength is related to the thickness of a single layer of self-adhesive. The new process can achieve the same bonding strength as double-sided self-adhesive tape even when the thickness of the self-adhesive is halved. Therefore, the new process saves more materials and has higher bonding strength.

[0027] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A EPDM waterproof membrane with overlapping edges, characterized in that: It includes an overlap structure (3) set at the overlap edge of the first waterproof membrane (1) and the second waterproof membrane (2). The overlap structure (3) is an adhesive layer (32) set at the overlap surface of the first waterproof membrane (1) and the second waterproof membrane (2). A stabilizing layer (31) is set at the adhesive layer (32). The gauze layer is fixed to the overlap edge through the adhesive layer (32).

2. The EPDM waterproof membrane with overlapping edges according to claim 1, characterized in that: The stabilizing layer (31) is a non-elastic striped mesh gauze.

3. The EPDM waterproof membrane with overlapping edges according to claim 2, characterized in that: The bottom of the overlap position of the first waterproof membrane (1) is provided with an upwardly recessed upper overlap layer (1a), which extends to the edge of the overlap edge of the first waterproof membrane (1).

4. The EPDM waterproof membrane with overlapping edges according to claim 3, characterized in that: The second waterproof membrane (2) has a downwardly recessed lower overlap layer (2a) at the top of the overlap position. The lower overlap layer (2a) is located below the upper overlap layer (1a) and extends to the edge of the overlap side of the second waterproof membrane (2). The stabilizing layer (31) and the adhesive layer (32) are located above the upper overlap layer (1a).

5. The EPDM waterproof membrane with overlapping edges according to claim 4, characterized in that: The adhesive layer (32) has a tearable film (33) on top.

6. The EPDM waterproof membrane with overlapping edges according to claim 1, characterized in that: Both the first waterproof membrane (1) and the second waterproof membrane (2) have a polyester fiber nonwoven fabric reinforcement layer (4) at the bottom.

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