Essential details
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Product Introduction
The HDPE geomembranes are manufactured using virgin polyethylene resin, consisting primarily of 97.5% high-density polyethylene and approximately 2.5% auxiliary additives—including carbon black, anti-aging agents, antioxidants, UV absorbers, and stabilizers. These geomembranes are produced using fully automated manufacturing equipment via a three-layer co-extrusion process. All products are manufactured in strict compliance with industry standards and are available in a comprehensive range of specifications; both smooth and textured impermeable membranes are offered with thicknesses ranging from 0.25 mm to 3.0 mm and widths from 4 m to 12 m. These products effectively meet the application requirements across various sectors, including environmental protection and sanitation, water conservancy, construction, municipal engineering, landscaping, petrochemicals, mining, salt production, agriculture, and aquaculture.
Applications of HDPE Geomembranes
1. Environmental Protection and Sanitation (e.g., municipal solid waste landfills, sewage treatment plants, toxic and hazardous waste disposal sites, hazardous material storage facilities, industrial waste sites, construction and demolition debris sites, etc.)
2. Water Conservancy (e.g., seepage prevention, leak plugging, and reinforcement for river, lake, reservoir, and dam embankments; canal lining; vertical cutoff walls; slope protection; etc.)
3. Municipal Engineering (e.g., subway systems, underground structures of buildings, roof water storage tanks, roof gardens—for seepage prevention—and sewage pipeline lining, etc.)
4. Landscaping (e.g., artificial lakes, ponds, golf course water features—for bottom lining—and slope protection, etc.)
5. Petrochemical Industry (e.g., chemical plants, refineries, gas stations—for oil storage tank lining/seepage prevention—chemical reaction tanks, sedimentation tanks—for lining—and secondary containment layers, etc.)
6. Mining Industry (e.g., ore washing tanks, heap leaching ponds, ash disposal sites, dissolution tanks, sedimentation tanks, storage yards, and tailings ponds—for bottom lining and seepage prevention—etc.)
7. Agriculture (e.g., reservoirs, drinking water cisterns, water storage ponds, and irrigation systems—for seepage prevention—etc.)
8. Aquaculture (e.g., fish ponds, shrimp ponds—for lining—and sea cucumber enclosures—for slope protection—etc.)
Installation of HDPE Geomembranes
1. Prior to laying HDPE geomembranes, corresponding qualified acceptance certificates for the civil engineering works must be obtained.
2. Before cutting the HDPE membrane, relevant dimensions must be measured accurately; cutting should then be performed based on these actual measurements rather than solely relying on dimensions shown in design drawings. Each sheet should be numbered sequentially, and detailed records should be maintained in a dedicated log sheet.
3. When laying HDPE geomembranes, the objective should be to minimize the number of seams. While ensuring quality, efforts should be made to conserve raw materials as much as possible; this approach also facilitates quality assurance.
4. The overlap width between adjacent membrane sheets at seams should generally be no less than 10 cm. Typically, the orientation of the seams should be aligned parallel to the slope—that is, running in the direction of the slope.
5. In areas involving corners or irregular terrain, the length of the seams should be minimized as much as possible. Unless specifically required, welding seams should be avoided—to the greatest extent possible—on slopes steeper than 1:6 within a distance of 1.5 meters from the crest of the slope or from areas of stress concentration.
6. During the installation of HDPE geomembranes, the formation of artificial wrinkles must be avoided; when ambient temperatures are low, the membrane should be pulled taut and laid flat to the fullest extent possible.
7. Once the installation of the HDPE geomembrane is complete, foot traffic on the membrane surface and the movement of tools should be minimized. No objects capable of causing damage to the HDPE membrane—whether by being placed upon it or carried across it—should be brought onto the membrane surface, in order to prevent accidental damage.