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About UsZHONGTAI HENGBANG Engineering Technology Co., Ltd. is located in the Academician Entrepreneurship Base of Tai'an National High-Tech Industrial Development Zone, Shandong Province. The company is a comprehensive service provider specializing in engineering consulting and design, materials R&D and manufacturing, as well as operations and maintenance. With strong technical expertise and robust R&D capabilities, its products are primarily applied in critical areas such as water conservancy infrastructure projects, transportation infrastructure initiatives, and environmental protection solutions for isolating and preventing leakage from urban waste and highly hazardous industrial solid waste.
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ProductsZHONGTAI HENGBANG Engineering Technology Co., Ltd. boasts production lines sourced from countries including Germany, Italy, Denmark, Belgium, and Switzerland, adhering to rigorous quality management systems and testing standards. We are equipped with advanced testing equipment capable of evaluating tensile strength, creep resistance, UV protection, water permeability, flame retardancy, antistatic properties, chemical corrosion resistance, and oxidation performance.
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Application CasesThe product is primarily used in hydraulic infrastructure projects, transportation infrastructure projects, and environmental protection applications—including the isolation and impermeability of municipal waste and highly hazardous industrial solid waste.
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BlogPrioritizing technological advancement and innovation, our company is committed to fulfilling user needs to the fullest extent possible.
Fujian HDPE Geomembrane Liner Construction Method and Welding Technique Guide (Technical Article)
Release date:
2020-10-07
Fujian Longyan HDPE Geomembrane for Impermeable Applications Wastewater Pond Construction Method
1. Fujian Longyan HDPE Geomembrane for Impermeable Applications The laying of
Laying out Fujian Longyan HDPE Geomembrane for Impermeable Applications It is a relatively critical process within the entire seepage control system.
Before laying the film Fujian Longyan HDPE Geomembrane for Impermeable Applications Perform an unpacking inspection of the appearance quality, documenting and repairing any identified mechanical damage, production defects, holes, cracks, or other imperfections.
Fujian Longyan HDPE Geomembrane for Impermeable Applications Before cutting, measure the relevant dimensions accurately, then proceed with the actual cut. During membrane installation, ensure that the overlap width between adjacent membranes is at least 100 mm, and arrange the seams parallel to the main slope line—specifically, align them along the direction of the slope.
Laying out Fujian Longyan HDPE Geomembrane for Impermeable Applications Efforts should be made to minimize the number of welds, and while ensuring quality, prioritize the efficient use of raw materials. This approach also makes it easier to maintain high-quality standards.
Typically, at corners and irregular sections, seam lengths should be minimized as much as possible. Unless otherwise specified, welds should be avoided within 1.5 meters of the top slope or stress concentration areas on slopes steeper than 1:6.
Fujian Longyan HDPE Geomembrane for Impermeable Applications During installation, avoid creating artificial wrinkles; when temperatures are low, make sure to stretch and smooth the material as tightly as possible.
Fujian Longyan HDPE Geomembrane for Impermeable Applications After installation is complete, minimize walking on the membrane surface or moving tools across it. Any objects that could potentially damage the Fujian Longyan HDPE geomembrane should never be placed directly on the membrane—or carried while walking on it—to avoid accidental harm to the material.
2. Fujian Longyan HDPE Geomembrane for Impermeable Applications Welding of
In Fujian Longyan, HDPE geomembranes for impermeable applications are welded using wedge welders with a dual-track hot-melt welding process. For areas where the wedge welder cannot be used, an extrusion-type hot-melt welder should be employed, paired with welding rods made from material identical to the original membrane, to create a single, buildup-style weld seam.
1. The hot wedge welding process consists of the following steps: adjusting pressure, setting temperature, configuring speed, inspecting weld overlap, loading the film into the machine, and starting the motor.
2. There should be no oil stains or dust at the seams, Fujian Longyan HDPE Geomembrane for Impermeable Applications The overlapping surface must be free of debris such as sediment, condensation, or moisture. If any contaminants are present, they must be thoroughly cleaned before welding.
3. Each day at the start of welding, it is standard practice to first conduct a trial weld on-site using a 0.9mm × 0.3mm sample with an overlap width of at least 10 cm. After performing peel and shear tests directly on the site, proceed with the actual welding operation only if the trial sample passes inspection. At that point, you can resume welding at the speed, pressure, and temperature settings that were just adjusted. During the hot wedge welding process, always monitor the machine’s performance closely and make minor adjustments to speed and temperature as needed, based on the specific conditions encountered on-site.
4. Welds must be neat and aesthetically pleasing, with no instances of undercutting or wandering.
5. When encountering Fujian Longyan HDPE Geomembrane for Impermeable Applications When the length is insufficient, longitudinal splicing is required. First, weld the transverse seams completely, then proceed to weld the longitudinal seams. Transverse seams that are more than 50 cm apart should be arranged in a T-shape; crossing them in an X pattern is strictly prohibited.
6. Do not press out any permanent creases when welding the film; ensure proper laying. Fujian Longyan HDPE Geomembrane for Impermeable Applications At that time, based on the local temperature fluctuations and the performance requirements for HDPE geomembranes used in Longyan, Fujian, allow for expansion and contraction caused by temperature changes.
7. Welding should not be performed during rain or when joints are exposed to moisture, dew, or heavy sand—unless protective measures are in place.
8. When the temperature drops below 5°C, construction should not proceed according to code requirements. However, if work must continue, the welding machine should be preheated before welding begins.
9. When welding Fujian Longyan HDPE geomembranes for impermeable lining, a generator with stable voltage performance should be used. In special cases where local power supply is required, a voltage stabilizer must be employed.
ZHONGTAI HENGBANG Engineering Technology Co., Ltd. is a comprehensive service provider integrating engineering consulting and design, material R&D and manufacturing, as well as operations and maintenance. With robust technical expertise and strong R&D capabilities, our products are prominently applied in environmental protection fields such as hydraulic infrastructure projects, transportation infrastructure initiatives, and the isolation and anti-seepage solutions for urban waste and hazardous industrial solid wastes. The company boasts advanced production lines sourced from Germany, Italy, Denmark, Belgium, Switzerland, and other countries, adhering to stringent quality management systems and rigorous testing standards. We are equipped with state-of-the-art equipment capable of evaluating critical properties—including tensile strength, creep resistance, UV resistance, permeability, flame retardancy, antistatic performance, chemical corrosion resistance, and oxidation stability—ensuring superior product quality. Furthermore, our enterprise has successfully obtained certifications such as CRCC, ISO 9001, ISO 14001, OHSAS 18000, and MA certificates, along with inspection reports issued by China’s Ministry of Railways and Ministry of Water Resources, the EU CE certification, and approvals from specialized laboratories in Russia, Australia, the United States, and other regions. We are dedicated to delivering top-quality geosynthetic materials and unparalleled services for projects spanning areas like reinforced soil retaining walls, soft ground stabilization, land reclamation and embankment construction/maintenance, hydraulic engineering, slope remediation and landscaping, road construction, and mining projects.
Consultation Phone: 13953856388
Contact: Mr. Zhang
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