NWG234 Geomembrane

This product is a geomembrane made primarily from virgin thermoplastic resin, scientifically formulated with additives such as carbon black, anti-aging agents, and UV absorbers, and formed through a process of heating, melting, plasticizing, extrusion, calendering, and cooling.

产 Product Categories

Classified by material, these include standard high-density polyethylene geomembranes, smooth-surfaced high-density polyethylene geomembranes for environmental protection, single-textured high-density polyethylene geomembranes for environmental protection, double-textured high-density polyethylene geomembranes for environmental protection, low-density polyethylene geomembranes, and linear low-density polyethylene geomembranes for environmental protection.

Width: Not less than 2000 mm;

Thickness: 0.30 mm, 0.50 mm, 0.75 mm, 1.00 mm, 1.25 mm, 1.50 mm, 2.00 mm, 2.50 mm, 3.00 mm.

GH-1: Standard high-density polyethylene geomembrane; GH-2S: Smooth-surfaced high-density polyethylene geomembrane for environmental protection; GH-2T1: Single-textured high-density polyethylene geomembrane for environmental protection; GH-2T2:  High-Density Polyethylene Geomembrane with Double-Sided Textured Surface for Environmental Protection, GL-1 Low-Density Polyethylene Geomembrane, GL-2 Linear Low-Density Polyethylene Geomembrane for Environmental Protection.

Example: A smooth-surfaced, high-density polyethylene geomembrane for environmental protection applications, with a width of 2000 mm and a thickness of 1.25 mm, can be denoted as: GH-2S 2000/1.25 GB/T 17643-2011

• It offers excellent chemical stability, resistance to aging, UV resistance, and resistance to degradation, and can last 50–70 years when used exposed to the elements;
• It is characterized by high tensile strength and high elongation at break;
• Installation is flexible, with a variety of specifications and installation methods available to meet the requirements of different projects;
• Hot-melt welding is used, resulting in welds that are stronger than the base material; the process is convenient, fast, and environmentally friendly;
• It is puncture-resistant and can withstand penetration by the roots of most plants;
• Non-toxic, eco-friendly materials that do not produce any harmful substances.

• Clean the base surface thoroughly, compact and level it, and remove any sharp objects such as tree roots and rocks;
• During construction, allow for an appropriate amount of slack—ranging from 2% to 5%—based on site conditions;
• The following welding processes are used: dual-track hot-melt, single-track hot-melt, and extrusion-type electrode welding, with a seam width ranging from 100 mm to 150 mm;
• During construction, cross-shaped welds should be avoided as much as possible; T-shaped welds are generally used;
• The vertical joints between two adjacent panels should not be on the same horizontal line; they should be staggered by at least 1 m;
• The welding sequence is to weld the slope first, followed by the dam base; joints should be located on flat surfaces, at least 1.50 m away from the dam toe and bends;
• When laying the membrane on a slope, the membrane should be laid parallel to the line of maximum slope so that the welds run parallel to the maximum slope—that is, along the direction of the slope.

 应 Applications

Suitable for waterproofing and seepage control projects such as landfills, artificial lakes, reservoir embankments, chemical reaction tanks, drinking water reservoirs, and fish ponds; green roofs, subways, culverts, and underground waterproofing and seepage control projects for buildings; particularly suitable for backfilling projects with high seepage control requirements and steep slopes.

• Packaging: Packaged in woven bags.
• Storage and Transportation: During transportation, avoid exposure to sunlight, contamination, heavy pressure, damage, rough handling, and mechanical impact; ensure the outer packaging remains intact. Keep away from heat sources and chemical contamination. The shelf life shall not exceed two years from the date of manufacture.

Applicable Standard: GB/T 17643-2011 "Geosynthetics—Polyethylene Geomembranes."