HDPE Waterproofing Geomembrane liner, is made from about 97% high density polyethylene and about 3% carbon black，adding antioxidant, anti-aging, UV-resistance, and heat stabilizer. All BPM HDPE membrane liner products are in accordance with or exceed GB, GRI and ASTM test standard.
The flexible membrane liner is the main lining system of defense for the artificial lake to prevent seepage. During the anti-seepage flexible membrane liner laying process, the welds should be minimized, especially the cross welds to reduce the hidden danger of leakage. In the process of unfolding the flexible membrane liner, it is necessary to avoid violent pulling, and it is not allowed to press it out of a deadlock. The floating soil on each weld must be wiped clean when welding, otherwise the upper and lower HDPE geomembranes cannot be heat-sealed together. To connect with the building foundation, the HDPE geomembrane liner must be flattened and not folded to provide good operating conditions for edge sealing.
in the HDPE liner welding process for the artificial lake, the hot wedge welding machine is divided into adjusting pressure-setting temperature setting speed-welding seam lap inspection-loading geomembrane film into the machine-starting motor pressure welding. There should be no oil and dust at the joints, and there should be no debris such as mud and sand on the overlapping section of the geomembrane. When there are debris, they must be cleaned up before welding. At the beginning of welding every day, a test piece of 0.9mm×0.3mm must be welded on site, with a lap width of not less than 10cm, and peel and shear tests on site with a tensile machine. After the sample is qualified, the adjusted speed can be used , Pressure and temperature are just welding. During the welding process of the hot wedge welding machine, it is necessary to pay attention to the operation of the welding machine at any time, and fine-tune the speed and temperature according to the actual situation on the spot. The welding seam is required to be neat and beautiful, and there should be no slip welding or skipping phenomenon.
On the premise of ensuring quality, the overlap width of the seam between the geomembrane and the geomembrane is generally not less than 10cm, and the welding seam is usually arranged in parallel to the maximum slope, that is, along the slope direction. Usually in corners and deformed areas, the length of the joint should be as short as possible.
The flexible membrane liner for the artificial lake should be powered by a generator with good voltage stabilization performance when welding, and a voltage stabilizer must be used when local electricity is used in special circumstances. When laying the flexible membrane liner, we should avoid artificial wrinkles. When the temperature is low, it should be tightened and flattened as much as possible. After laying, try to minimize walking on the membrane surface, moving tools, etc. Anything that can cause harm to the membrane should not be placed on the membrane or carried on the HDPE geomembrane to avoid accidental damage to the flexible membrane liner.
As the professional geomembrane manufacturer and supplier, BPM has been dedicated to supplying one stop geomembranes and services to worldwide customers since its foundation in 2010. Our main innovative, high quality geosynthetics products include geomembranes, geotextiles, geocells, geosynthetic clay liners (GCLs) , drainage boards, geogrids, etc. All BPM brand HDPE geomembranes have passed the certificates of the ISO9001, ISO14001, TUV, Soncap, SASO, BV certificates and the test of SGS and Intertek etc. Our geomembrane products have been exported to over 36 countries . If you have any questions or inquiries, please contact us
