Waterproof coiled material, production equipment thereof and waterproof cloth
By setting thicker overlap areas on both sides of the waterproof membrane coating layer, and using a hot-melt method to allow the coating material to overflow and self-seal, the problems of thinning at the overlap and poor adhesion are solved, thus improving the waterproof effect and service life of the waterproof membrane.
Patent Information
- Application Number
- CN202520120358.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Existing waterproof membranes, after being overlapped using the hot-melt method, often result in thinner overlaps or poor adhesion, affecting the material's lifespan and waterproofing performance.
In the width direction of the waterproof membrane, a first overlap area and a second overlap area are set on both sides of the coating layer, making its thickness greater than that of the main body in the middle, and splicing is carried out by hot melting method. During the compaction process, the coating material automatically overflows to the outside of the overlap area to form a self-sealing.
It improves the adhesion and waterproofing performance at the overlap, ensures the overall structural stability and service life of the waterproofing material, and prevents the thickness at the overlap from decreasing.
Smart Images
Figure CN223835188U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering materials technology, and more specifically, to a waterproof membrane and its production equipment, and a waterproof fabric. Background Technology
[0002] Currently, waterproofing materials used in waterproofing projects are typically assembled using a hot-melt method, where the coating layer of the hot-melt waterproofing membrane is melted by flame heating until it reaches a viscous state, allowing it to bond with the substrate. However, existing waterproofing membranes, after being joined using the hot-melt method, may exhibit issues such as excessive pressure leading to thinner overlaps, affecting the material's lifespan, or insufficient pressure resulting in poor adhesion at the overlaps, thus compromising the waterproofing effect. Utility Model Content
[0003] One objective of this utility model is to provide a waterproof membrane, its production equipment, and a waterproof fabric.
[0004] According to one aspect of the present invention, a waterproof membrane is provided, comprising:
[0005] Tire base layer;
[0006] An isolation layer, which is disposed on the surface of the base layer, is used for waterproofing;
[0007] A coating layer is disposed between the base layer and the release layer for hot-melt bonding of the base layer and the release layer;
[0008] In the width direction of the waterproof membrane, the coating layer includes a main body and a first overlapping area and a second overlapping area located on both sides of the main body, wherein the thickness of the first overlapping area and / or the second overlapping area is greater than the thickness of the main body.
[0009] Optionally, the isolation layer is provided with two layers, namely a first isolation layer and a second isolation layer, which are located on the upper surface and the lower surface of the tire base layer, respectively;
[0010] The coating layer has two layers, namely a first coating layer and a second coating layer. The first coating layer is located between the first isolation layer and the tire base layer, and the second coating layer is located between the second isolation layer and the tire base layer.
[0011] Optionally, the thickness of both the first overlapping area and the second overlapping area is greater than the thickness of the main body, and the thickness of the first overlapping area is equal to the thickness of the second overlapping area.
[0012] Optionally, in the width direction of the waterproof membrane, the width of the first overlap area or the width of the second overlap area accounts for 5% to 10% of the total width of the waterproof membrane.
[0013] Optionally, in the width direction of the waterproof membrane, the width range of the first overlap area and the width range of the second overlap area are both 5cm to 10cm; and / or,
[0014] The thickness difference between the first overlapping area and the second overlapping area and the thickness of the main body is less than or equal to 5 mm.
[0015] Optionally, the coating layer is made of bitumen material.
[0016] According to a second aspect of this utility model, a production apparatus for the waterproof membrane described in the first aspect is provided, comprising:
[0017] An oiling assembly for applying a coating material to the surface of the tire base layer;
[0018] A thickness control roller, comprising a thickness roller body and a first cutting portion and a second cutting portion located at both ends of the thickness roller body, wherein the radius of the first cutting portion and / or the second cutting portion is smaller than the radius of the thickness roller body, and the thickness control roller acts on the coating material to form the coating layer;
[0019] A release material roller, the structure of which matches the structure of the thickness control roller, is used to set the release layer on the surface of the coating layer.
[0020] Optionally, the insulating material roller has a first covering part, a covering roller body, and a second covering part corresponding to the first cutting part, the thickness roller body, and the second cutting part;
[0021] Wherein, the radius difference between the first covering part or the second covering part and the covering roller body is equal to the radius difference between the first cutting part or the second cutting part and the thickness roller body.
[0022] According to a second aspect of the present invention, a waterproof fabric is provided, which is spliced from the waterproof roll material described in the first aspect; wherein the first overlapping area and the second overlapping area at the same splicing position are joined by heat fusion.
[0023] Optionally, in the width direction of the waterproof membrane, the first overlap area or the second overlap area has an unmelted area of a set width, the thickness of which is greater than the thickness of the rest of the waterproof membrane.
[0024] One technical advantage of this invention is that by setting a coating layer between the base layer and the isolation layer, and by setting the thickness of the first overlap area and / or the second overlap area on both sides of the coating layer to be greater than the thickness of the middle main body, the coating material in the overlap area can automatically overflow to the outside of the overlap area to form a self-sealing effect after the waterproof membrane is spliced into construction material by hot melting method, thereby improving the waterproof performance at this point. At the same time, the thickness of the waterproof material at the overlap and the main body will not be significantly reduced, thus improving the service life of the waterproof material.
[0025] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description
[0026] The accompanying drawings, which form part of this specification, illustrate embodiments of the present invention and, together with the specification, serve to explain the principles of the present invention.
[0027] Figure 1 This is a structural schematic diagram of the waterproof membrane provided by this utility model.
[0028] Figure 2 This is a schematic diagram of the production equipment for the waterproof membrane provided by this utility model.
[0029] Figure 3 This is a schematic diagram of the thickness control roller provided by this utility model.
[0030] Figure 4 This is a schematic diagram of the structure of the insulating material roller provided by this utility model.
[0031] Figure 5 This is a structural schematic diagram of a waterproof fabric provided by this utility model.
[0032] Figure 6 yes Figure 5 A partial schematic diagram of point A (the splicing location).
[0033] Explanation of reference numerals in the attached figures:
[0034] 11. Coating and oiling device; 12. Oiling triangular groove; 13. Upper thickness control roller; 131. First cutting section; 132. Thickness roller body; 133. Second cutting section; 14. Lower thickness control roller; 15. Upper cover material roller; 151. First covering section; 152. Cover material roller body; 153. Second covering section; 16. Lower cover material roller;
[0035] 21. Base layer; 22. First coating layer; 221. Upper main body; 23. Second coating layer; 231. Lower main body; 24. First isolation layer; 25. Second isolation layer; 26. Upper first overlap area; 27. Lower first overlap area; 28. Upper second overlap area; 29. Lower second overlap area. Detailed Implementation
[0036] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
[0037] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.
[0038] Technologies and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such technologies and equipment should be considered part of the specification.
[0039] In all the examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0041] like Figure 1 As shown, according to one aspect of the present invention, a waterproof membrane is provided, comprising: a base layer 21, an isolation layer, and a coating layer; the isolation layer is disposed on the surface of the base layer 21 for waterproofing; the coating layer is disposed between the base layer 21 and the isolation layer for hot-melt bonding of the base layer 21 and the isolation layer; in the width direction of the waterproof membrane, the coating layer includes a main body and a first overlapping area and a second overlapping area located on both sides of the main body, the thickness of the first overlapping area and / or the second overlapping area being greater than the thickness of the main body.
[0042] Specifically, the waterproof membrane has a base layer 21 and a coating layer and an isolation layer sequentially disposed on the surface of the base layer 21. The base layer 21, as the base material of the waterproof membrane, provides support and strength to the entire structure of the waterproof membrane. It can be made of materials such as polyester felt, and can be pre-impregnated before use. Then, an elastomer / plastic modified bitumen material is coated onto the base layer 21 to form a coating layer. Finally, an isolation layer, made of waterproof material, is placed on the outermost layer to provide waterproofing for the entire waterproof membrane. The coating layer serves two purposes: firstly, it bonds the isolation layer and the base layer 21; secondly, when the waterproof membrane needs to be spliced into a waterproof fabric for the project, the coating layer can be melted and overflowed to the joint through a hot-melt method, achieving an overlapping connection.
[0043] In this embodiment, by setting the thickness of the first and second overlap areas of the coating layer on both sides to be greater than the thickness of the main body, the thicker coating material can automatically overflow to the outside of the overlap area under pressure during the hot-melt splicing process, forming a self-sealing effect. The splicing position is fully filled by the overflowing material of the coating layer, improving the adhesion effect at the splicing position and ensuring the overall waterproofing effect of the waterproof material. Simultaneously, the thicker first and / or second overlap areas ensure that even with greater pressure, the thickness of the waterproof material at the splicing position is maintained, preventing the structure from thinning due to coating overflow. Furthermore, the peel strength and shear strength of the waterproof membrane seam at the overlap position are positively correlated with the thickness. Therefore, the thicker coating layer at the edge of the membrane ensures the overall structural stability of the formed waterproof material, improving the service life of the waterproof membrane in the project. (Reference) Figure 5 and Figure 6 .
[0044] In practical applications, the thickness of the first overlap area and the second overlap area can be designed to be greater than the thickness of the main body, depending on actual needs. Either the thickness of the first overlap area or the second overlap area can be designed to be greater than the thickness of the main body, or both the thickness of the first overlap area and the thickness of the second overlap area can be the same or different. The specific amount of thickness exceeding the main body can also be designed according to actual needs and engineering requirements. This utility model does not impose any restrictions on this.
[0045] Optionally, such as Figure 1 As shown, the isolation layer consists of two layers, namely a first isolation layer 24 and a second isolation layer 25, which are located on the upper and lower surfaces of the tire base layer 21, respectively; the coating layer consists of two layers, namely a first coating layer 22 and a second coating layer 23, which are located between the first isolation layer 24 and the tire base layer 21, and the second coating layer 23 is located between the second isolation layer 25 and the tire base layer 21.
[0046] Specifically, in practical applications, the isolation layer and the coating layer can be sequentially stacked on both the upper and lower surfaces of the base layer 21 according to actual needs, facilitating the subsequent overlapping and splicing of the waterproof membrane. In this embodiment, by sequentially setting the first coating layer 22 and the first isolation layer 24 on the upper surface of the base layer 21, and setting the second coating layer 23 and the second isolation layer 25 on the lower surface of the base layer 21, the coating layers on both sides of the base layer 21 can automatically overflow to the overlap joints on both sides during hot-melt splicing of the waterproof membrane. This further improves the connection reliability at the splicing position, further enhances the waterproof performance, and also ensures the thickness of the coating layer at this location, improving the stability of the structure and guaranteeing the service life of the waterproof membrane.
[0047] Optionally, such as Figure 1 As shown, the thickness of both the first overlapping area and the second overlapping area is greater than the thickness of the main body, and the thickness of the first overlapping area is equal to the thickness of the second overlapping area.
[0048] Specifically, in this embodiment, by designing the thickness of both the first and second overlap areas to be greater than the thickness of the main body, the waterproofing effect and service life of both sides of the waterproof membrane are improved when they are overlapped and spliced. At the same time, the identical thickness of the first and second overlap areas facilitates the production and manufacturing of the waterproof membrane, reducing equipment costs.
[0049] Optionally, such as Figure 1 As shown, in the width direction of the waterproof membrane, the width of the first overlap area or the width of the second overlap area accounts for 5% to 10% of the total width of the waterproof membrane.
[0050] Specifically, in this embodiment, the width of the first overlap area and the second overlap area account for 5% to 10% of the total width of the waterproof membrane. On the one hand, this ensures that the waterproof membrane has a suitable overlap depth when it is overlapped and spliced, further ensuring the connection strength of the overlap and splicing. On the other hand, it does not cause waste in the width direction of the waterproof membrane, thus reducing the cost of construction materials.
[0051] Optionally, such as Figure 1 As shown, in the width direction of the waterproof membrane, the width range of the first overlap area and the width range of the second overlap area are 5cm to 10cm respectively; and / or, the thickness difference between the first overlap area and the second overlap area and the thickness of the main body is less than or equal to 5mm.
[0052] Specifically, in this embodiment, a waterproof membrane is provided. The width of the first and second overlapping areas can be designed to be between 5cm and 10cm, and the thickness can be designed to be within 5mm thicker than the main body. The aforementioned width design facilitates the overlapping and splicing of the waterproof membrane, and ensures the waterproof effect of the overlap and the thickness of the overlapping area, thereby improving the service life of the waterproof membrane. The aforementioned thickness design facilitates the production and molding of the waterproof membrane, and also ensures the amount of coating material overflowing at the overlapping and splicing positions. The width of the waterproof membrane is typically designed to be 100cm.
[0053] Alternatively, the coating layer may be made of bitumen material, typically elastomeric / plastic modified bitumen.
[0054] like Figures 2 to 4 As shown, according to a second aspect of the present invention, a production equipment for a first aspect waterproof membrane is provided, comprising: an oiling assembly, a thickness control roller, and a release material roller; the oiling assembly is used to coat a coating material onto the surface of a base layer 21; the thickness control roller includes a thickness roller body 132 and a first cutting portion 131 and a second cutting portion 133 located at both ends of the thickness roller body 132, wherein the radius of the first cutting portion 131 and / or the second cutting portion 133 is smaller than the radius of the thickness roller body 132, and the thickness control roller acts on the coating material to form a coating layer; the structure of the release material roller matches the structure of the thickness control roller and is used to set a release layer on the surface of the coating layer.
[0055] Specifically, in this embodiment, the oiling assembly in the provided production equipment is used to lay a coating material, such as modified asphalt, on one or both surfaces of the base layer 21. The oiling assembly may include a coating material application device 11 and an oiling triangular groove 12. After the base layer 21 is pre-impregnated, the first oiling process of the oiling assembly completes the coating of the coating material. Then, it is sheared and squeezed by a thickness control roller for thickness control, followed by the application of a release material roller to complete the bonding of the release material. Finally, it is cooled and shaped into a modified asphalt waterproof membrane. When both sides of the base layer 21 are provided with a coating layer and a release layer, two thickness control rollers and two release material rollers are also provided respectively.
[0056] In one embodiment, the base layer 21 is pre-impregnated and then coated with the first layer material by the oiling assembly. Then, it is sheared and squeezed by the upper thickness control roller 13 and the lower thickness control roller 14 to form the first coating layer 22 and the second coating layer 23. After that, the upper isolation material roller 15 and the lower isolation material roller 16 work together to complete the adhesion of the isolation layer material to form the first isolation layer 24 and the second isolation layer 25. Finally, it is cooled and shaped into a modified bitumen waterproof membrane.
[0057] In the above process, the first coating layer 22 has an upper first overlap area 26, an upper main body portion 221, and an upper second overlap area 28, and the second coating layer 23 has a lower first overlap area 27, a lower main body portion 231, and a lower second overlap area 29. Correspondingly, the formed first isolation layer 24 and second isolation layer 25 match the structure of the first coating layer 22 and the second coating layer 23.
[0058] Optionally, such as Figures 2 to 4 As shown, the material covering roller has a first covering part 151, a covering roller body 152, and a second covering part 153 corresponding to the first cutting part 131, the thickness roller body 132, and the second cutting part 133; wherein, the radius difference between the first covering part 151 or the second covering part 153 and the covering roller body 152 is equal to the radius difference between the first cutting part 131 or the second cutting part 133 and the thickness roller body 132.
[0059] Specifically, in practical applications, the radius difference between the first covering part 151 or the second covering part 153 and the covering roller body 152 is designed to be equal to the radius difference between the first cutting part 131 or the second cutting part 133 and the thickness roller body 132, so that the first isolation layer 24 and the second isolation layer 25 can conformally cover and adhere to the first coating layer 22 and the second coating layer 23. Through the above-mentioned improvements to the structure of each roller, the coating layer of the produced waterproof membrane can be formed in its width direction, with the thickness in the two side regions being greater than the thickness in the main body in the middle region, thereby enabling the produced waterproof membrane to have better waterproof effect and longer service life.
[0060] like Figures 5 to 6 As shown, according to a second aspect of the present invention, a waterproof fabric is provided, which is spliced from the waterproof roll material of the first aspect; wherein, the first overlapping area and the second overlapping area at the same splicing position are joined by heat fusion.
[0061] Specifically, in this embodiment, the waterproof fabric is formed by overlapping and splicing the waterproof roll material provided in the first aspect in its width direction. Since the thickness of the first and second overlapping areas on both sides of the cover layer of the waterproof roll material is greater than the thickness of the central main body, the material at the splicing position after hot-melt splicing has an automatically overflowing coating layer that forms a self-sealing effect, improving the adhesion at the splicing position and ensuring the overall waterproof effect of the waterproof fabric. Simultaneously, the thicker first and / or second overlapping areas ensure the thickness of the waterproof material at the splicing position, guaranteeing the overall structural stability of the formed waterproof fabric and improving its service life in engineering projects. Furthermore, the raised first and second overlapping areas facilitate splicing positioning during the overlapping of the waterproof roll material, improving the production efficiency of the waterproof fabric.
[0062] Optionally, such as Figure 6As shown, in the width direction of the waterproof membrane, the first overlap area or the second overlap area has an unmelted area of a set width, and the thickness of the unmelted area is greater than the thickness of the rest of the waterproof membrane.
[0063] Specifically, in some embodiments, when using the hot-melt method to overlap waterproof membranes, a portion of the first or second overlap area can be hot-melted (the unheated area forms an unmelted zone). This results in a thicker structure in the overlapped area compared to other areas, increasing the height of the seam and creating a "bare island" effect at the overlap, reducing the probability of this area becoming a water storage point and thus lowering the risk of leakage. Simultaneously, the longitudinal flow-guiding effect allows water to quickly flow away from the surface of the waterproof membrane, preventing accumulation and improving the waterproof membrane's resistance to water seepage. The unmelted zone can be the entire first or second overlap area, or it can be a portion of the width of the first or second overlap area.
[0064] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.
[0065] While specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A waterproof membrane, characterized in that, include: Tire base layer; An isolation layer, which is disposed on the surface of the base layer, is used for waterproofing; A coating layer is disposed between the base layer and the release layer for hot-melt bonding of the base layer and the release layer; In the width direction of the waterproof membrane, the coating layer includes a main body and a first overlapping area and a second overlapping area located on both sides of the main body, wherein the thickness of the first overlapping area and / or the second overlapping area is greater than the thickness of the main body.
2. The waterproof membrane according to claim 1, characterized in that, The isolation layer consists of two layers: a first isolation layer and a second isolation layer. The first isolation layer and the second isolation layer are located on the upper and lower surfaces of the tire base layer, respectively. The coating layer has two layers, namely a first coating layer and a second coating layer. The first coating layer is located between the first isolation layer and the tire base layer, and the second coating layer is located between the second isolation layer and the tire base layer.
3. The waterproof membrane according to claim 2, characterized in that, The thickness of both the first overlapping area and the second overlapping area is greater than the thickness of the main body, and the thickness of the first overlapping area is equal to the thickness of the second overlapping area.
4. The waterproof membrane according to claim 1, characterized in that, In the width direction of the waterproof membrane, the width of the first overlap area or the width of the second overlap area accounts for 5% to 10% of the total width of the waterproof membrane.
5. The waterproof membrane according to claim 1, characterized in that, In the width direction of the waterproof membrane, the width range of the first overlap area and the width range of the second overlap area are 5cm to 10cm respectively; and / or, The thickness difference between the first overlapping area and the second overlapping area and the thickness of the main body is less than or equal to 5 mm.
6. The waterproof membrane according to claim 1, characterized in that, The coating layer is made of asphalt material.
7. A production apparatus for waterproof membrane as described in any one of claims 1-6, characterized in that, include: An oiling assembly for applying a coating material to the surface of the tire base layer; A thickness control roller, comprising a thickness roller body and a first cutting portion and a second cutting portion located at both ends of the thickness roller body, wherein the radius of the first cutting portion and / or the second cutting portion is smaller than the radius of the thickness roller body, and the thickness control roller acts on the coating material to form the coating layer; A release material roller, the structure of which matches the structure of the thickness control roller, is used to set the release layer on the surface of the coating layer.
8. The production equipment for waterproof membrane according to claim 7, characterized in that, The insulating material roller has a first covering part, a covering roller body and a second covering part corresponding to the first pressing and cutting part, the thickness roller body and the second pressing and cutting part; Wherein, the radius difference between the first covering part or the second covering part and the covering roller body is equal to the radius difference between the first cutting part or the second cutting part and the thickness roller body.
9. A waterproof fabric, characterized in that, It is made of waterproof membrane spliced according to any one of claims 1-6; wherein the first overlapping area and the second overlapping area at the same splicing position are joined by heat fusion.
10. The waterproof fabric according to claim 9, characterized in that, In the width direction of the waterproof membrane, the first overlap area or the second overlap area has an unmelted area of a set width, the thickness of which is greater than the thickness of the rest of the waterproof membrane.