Coiled drainage board
Short Description:
A roll drainage board is a drainage roll made of polymer materials through a special process and having a continuous concave-convex shape. Its surface is usually covered with a geotextile filter layer, forming a complete drainage system that can effectively drain groundwater, surface water, etc., and has certain waterproof and protective functions.
A roll drainage board is a drainage roll made of polymer materials through a special process and having a continuous concave-convex shape. Its surface is usually covered with a geotextile filter layer, forming a complete drainage system that can effectively drain groundwater, surface water, etc., and has certain waterproof and protective functions.
Structural Characteristics
- Concave-convex Structure：It has a unique concave-convex film, forming a closed convex columnar shell. This structure can increase the compressive strength of the drainage board and form drainage channels between the protrusions to allow water to flow quickly.
- Edge Treatment：The edges are usually thermally bonded with butyl rubber strips during processing and production, enhancing the sealing and waterproof properties of the roll to prevent water from infiltrating from the edges.
- Filter Layer：The geotextile filter layer on the top can filter out sediment, impurities, etc. in the water to prevent the drainage channels from being blocked and ensure the long-term effectiveness of the drainage system.
Performance Characteristics
- Excellent Drainage Performance：It can quickly drain water from the raised channels of the drainage board, reduce the groundwater level or drain surface water, and reduce the pressure of water on buildings or planting layers.
- High Compressive Strength：It can withstand a certain amount of pressure without deformation and is suitable for various load conditions, such as vehicle driving and personnel activities.
- Good Corrosion Resistance：It has a certain tolerance to chemicals such as acids and alkalis and can be used stably for a long time in different soil environments.
- Strong Flexibility：It has good flexibility, which is convenient for laying on various shaped ground or slopes and can adapt to a certain degree of deformation without damage.
- Environmental Protection and Energy Saving：The polymer materials used usually have good environmental protection performance, and its drainage function contributes to the rational use and recycling of water resources.
Production Process
- Raw Material Mixing：Mix the polymer raw materials such as polyethylene (HDPE) and polyvinyl chloride (PVC) with various additives in a certain proportion evenly.
- Extrusion Molding：Heat and extrude the mixed raw materials through an extruder to form a drainage board baseband with a continuous concave-convex shape.
- Cooling and Shaping：The extruded drainage board baseband is cooled and shaped through a cooling water tank or an air-cooling device to fix its shape.
- Edge Treatment and Composite Filter Layer：Treat the edges of the cooled drainage board by thermally bonding butyl rubber strips, and then composite the geotextile filter layer on the top of the drainage board by thermal compounding or gluing.
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Application Areas
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Building and Municipal Engineering：Used for the waterproof and drainage of the exterior walls, roofs, and roofs of building basements, as well as the ground drainage systems of roads, squares, and parking lots.
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- Greening projects: Roof gardens, garage roofs...
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The following is the parameter table of roll drainage boards:
Parameters Details Material Usually made of plastic materials such as high-density polyethylene (HDPE), polypropylene (PP), and EVA Size The width is generally 2-3 meters, and the length includes 10 meters, 15 meters, 20 meters, 25 meters, 30 meters, etc. Thickness The common thickness is 10-30 millimeters, such as 1 cm, 1.2 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, etc. Drainage Hole Diameter Generally 5-20 millimeters Weight per Square Meter Usually 500g - 3000g/m² Load-bearing Capacity Generally, it should reach 500-1000kg/m². When used on roofs, etc., and when used in places like roads, the load-bearing capacity requirement is higher, up to more than 20 tons. Color Common colors include black, gray, green, etc. Surface Treatment Usually has anti-slip treatment, surface texture or added anti-slip agent Corrosion Resistance It has a certain tolerance to chemicals such as acids and alkalis and can be used stably for a long time in different soil environments. Service Life Generally more than 10 years Installation Method Splicing installation, lapping, plugging, pasting
