Product Introduction:
HDPE geomembrane is one type of geosynthetic materials. The application of geosynthetics originated in the 1950s. The domestic geomembrane was one of the projects in the Eighth Five-Year Plan. HDPE geomembrane is a waterproof and barrier material produced from medium or high-density polyethylene resin. (The density is 0.94g/cm³ or above.) 

Performance features: 

1. It contains no chemical additives and is not heat-treated, making it an ideal building material.
2. It has excellent mechanical properties, good water permeability, and is resistant to corrosion and aging.
3. It has strong anti-burial and anti-corrosion performance, with a loose structure and excellent drainage performance.
4. It has a high friction coefficient and tensile strength, and possesses geotextile reinforcement properties.
5. It has functions such as isolation, reverse filtration, drainage, protection, stabilization, and reinforcement.
6. It can adapt to uneven base surfaces, resist construction external force damage, and has low creep.
7. It has good overall continuity, is lightweight, and is easy to install.
8. As a permeable material, it has excellent reverse filtration and isolation functions, and strong puncture resistance, thus providing excellent protection performance. 

Application and Usage:
It is mainly applied in anti-seepage lining projects such as landfill, sewage and waste liquid treatment, water conservancy, agriculture, transportation, high-speed rail, tunnels, airports, buildings, and landscapes. 

Construction plan specifications: 

Geotextile membranes should not be dragged or pulled hard during transportation to avoid being punctured by sharp objects. 
1. They should be extended from the bottom to the higher position, not pulled too tight, and a 1.50% surplus should be left to accommodate local subsidence and stretching. Considering the actual situation of this project, the slope is laid from top to bottom.
2. The longitudinal joints of adjacent membranes should not be on the same horizontal line and should be staggered by more than 1m.
3. The longitudinal joints should be more than 1.50m away from the dam foot and the bend, and should be set on the plane.
4. The slope should be laid first, followed by the bottom of the field.
5. When laying on the slope, the direction of the membrane should be basically parallel to the major slope line. 
Product Specifications:
0.3mm to 3mm in thickness, 1m to 8m in width, and length as per customer requirements.