Special coating system for overlapping edge of asphalt waterproof coiled material
By using upper and lower thickness rollers to roll the asphalt waterproof membrane as a whole on the production line, and combining this with precise coating at the overlap edge, the problem of inaccurate thickness control at the overlap edge is solved, achieving lightweighting and cost savings for the membrane.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIFANG HONGYUAN WATERPROOF MATERIAL
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-01
AI Technical Summary
In existing production lines, the thickness control of the overlap edge of modified bitumen waterproof membrane is not precise, resulting in uneven weight distribution of the membrane and waste of coating material costs.
The asphalt waterproof membrane is rolled as a whole using upper and lower thickness rollers, and the overlapping edges are precisely coated using an overlapping edge coating tank. The size of the oil outlet is controlled by a baffle plate to adjust the coating amount.
It enables separate control of the overall thickness and overlap thickness of the asphalt waterproof membrane, reducing the weight of the membrane and the waste of coating material.
Smart Images

Figure CN224181180U_ABST
Abstract
Description
A special coating system for overlapping edges of asphalt waterproof membrane Technical Field
[0001] This utility model relates to the field of waterproofing technology, and in particular to a special coating system for the overlapping edges of asphalt waterproof membrane. Background Technology
[0002] For modified bitumen waterproof membranes with sand or schist surfaces, the testing standard stipulates that the thickness is measured only at the overlap edges. Thickness is not specified for the sand or schist areas outside the overlap edges. The typical overlap width is (8-10) cm. In existing production lines, the coating thickness control rollers are flat rollers, resulting in a flat surface after the membrane passes through them. This is not entirely suitable for sand or schist surface membranes, as it not only causes excessive thickness in the sand or schist areas, making the membrane too heavy, but also wastes the cost of the coating material for these areas. Summary of the Invention
[0003] This invention provides a special coating system for the overlapping edge of asphalt waterproof membrane, which can separately control the overall thickness of the asphalt waterproof membrane and the thickness of the overlapping edge.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: a special coating system for overlapping edges of asphalt waterproof membrane, comprising a support frame, an upper thickness roller, a lower thickness roller, and an overlapping edge coating tank disposed on the support frame, wherein the upper thickness roller and the lower thickness roller are disposed correspondingly to each other; and an oil outlet is provided at the lower end of the overlapping edge coating tank.
[0005] Preferably, a slot is provided at the lower opening of the overlapping edge coating tank, and an insert plate is provided on the slot.
[0006] The advantage of this invention lies in the fact that the asphalt waterproof membrane is first rolled and pressed by upper and lower thickness rollers, and then coated at the overlap edge using an overlap edge coating box. This allows for separate control of the overall thickness of the asphalt waterproof membrane and the thickness of the overlap edge, thereby effectively reducing the weight of the membrane and minimizing waste of coating material costs. Attached Figure Description
[0007] Figure 1 is a schematic diagram of the structure of this utility model;
[0008] Figure 2 is a schematic diagram of the overlapping edge coating box;
[0009] Among them, 1-support; 2-upper thickness roller; 3-lower thickness roller; 4-overlapping edge coating tank; 5-asphalt waterproof membrane; 6-overlapping edge of membrane; 7-insertion plate; 8-oil outlet. Detailed Implementation
[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0011] As shown in Figure 1, a special coating system for overlapping edges of asphalt waterproof membrane consists of a support 1 and an upper thickness roller 2, a lower thickness roller 3, and an overlapping edge coating tank 4 mounted on the support 1. As shown in Figure 2, the overlapping edge coating tank 4 is a box with an open bottom. A slot is provided at the bottom opening of the overlapping edge coating tank 4, and an insert plate 7 is inserted into the slot. By adjusting the insert plate 7, the size of the oil outlet 8 can be adjusted.
[0012] When producing sand-surface and schist-surface waterproof membrane rolls, the base fabric of the asphalt waterproof membrane 5 passes through the upper thickness roller 2 and the lower thickness roller 3, and then through a dedicated overlap edge coating box 4. The arrow in Figure 1 indicates the direction of membrane travel. The overlap edge coating box 4 is connected to the coating tank or coating tank pipeline via pipelines, and the coating material used is the same as the coating material in the coating tank. The lower surface baffle of the overlap edge coating box 4 is a movable insert plate. By controlling the size of the gap between the insert plates, the feeding speed is controlled. Different feeding speeds control the coating thickness of the membrane overlap edge 6, so that the overall thickness of the membrane and the overlap edge thickness can be controlled separately.
[0013] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. For some technical contents that are well known to those skilled in the art, they will not be repeated here. Those skilled in the art should understand that, based on the technical solution of the present utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the present utility model.
Claims
1. A special coating system for overlapping edges of asphalt waterproof membrane, characterized in that, It includes a support (1), an upper thickness roller (2), a lower thickness roller (3) and an overlapping edge oiling tank (4) disposed on the support (1), wherein the upper thickness roller (2) and the lower thickness roller (3) are disposed correspondingly to each other; and an oil outlet (8) is provided at the lower end of the overlapping edge oiling tank (4).
2. The special coating system for overlapping edges of asphalt waterproof membrane according to claim 1, characterized in that, The lower opening of the overlapping edge oiling box (4) is provided with a slot, and a plate (7) is provided on the slot.