en.Wedoany.com Reported - China Tian Ding Feng Holding Co., Ltd. (referred to as "TDF") officially launched a new composite geomembrane product in mid-June 2026. This product integrates functions such as anti-seepage, drainage, isolation, protection, and reinforcement, and can be widely applied in engineering fields including water conservancy, transportation, environmental protection, municipal engineering, mining, and chemical industries. The product uses polypropylene or polyester filament geotextile as the base material, combined with membrane materials such as high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), and polyvinyl chloride (PVC), and is formed through two mainstream processes: far-infrared heating and calendering.
Tian Ding Feng Holding Co., Ltd., established in 2011, is a council member of the China Technical Association on Geosynthetics, focusing on the research, development, and production of high-tech nonwoven materials. The company owns four domestic wholly-owned subsidiaries and two overseas wholly-owned subsidiaries, with six production bases located in Dezhou, Shandong; Chuzhou, Anhui; Changde, Hunan; and overseas. Its annual nonwoven fabric production capacity reaches 280,000 tons. In 2025, TDF's annual shipment volume of nonwoven fabric exceeded 1 billion square meters. The company is recognized as a specialized and innovative "Little Giant" enterprise, a manufacturing single champion demonstration enterprise, and a national high-tech enterprise.
According to TDF, the new composite geomembrane covers mainstream specifications such as one-layer fabric with one-layer membrane and two-layer fabric with one-layer membrane. It can also supply pure membrane materials like smooth geomembrane and textured geomembrane separately, with a complete range of thickness specifications that can be flexibly customized based on different engineering conditions. The product boasts five core advantages: effective anti-seepage and drainage, precise medium isolation, strong physical protection, structural reinforcement, and corrosion resistance, weather resistance, and durability. The product exhibits excellent acid and alkali resistance, with a longitudinal and transverse strength retention rate of no less than 90%, enabling it to adapt to complex and harsh conditions such as acidic, alkaline, humid, and open-air environments. According to measured data, the one-layer fabric with one-layer membrane product can withstand a maximum hydrostatic pressure of 1.6 MPa, while the two-layer fabric with one-layer membrane product can reach up to 1.8 MPa; the longitudinal and transverse tensile strength can reach up to 40 kN/m. The product is strictly manufactured in accordance with national standards GB/T 17642-2025 "Geosynthetics - Nonwoven fabric composite geomembrane" and GB/T 17639-2023 "Geosynthetics - Spunbond needle-punched nonwoven geotextile."
TDF has built a specialized production line for the new product, encompassing seven core units including feeding and unwinding, twin-screw extrusion, calendering and forming, slitting, and winding, with a rated annual production capacity of 10,000 tons. Since the research and development testing phase, TDF's geotechnical series products have been deeply involved in multiple key domestic and international projects, including domestic mining anti-seepage projects such as the Zijinshan Copper-Gold Mine in Fujian and the tailings pond of the Julong Copper Mine in Tibet, as well as overseas infrastructure projects like the Addis Ababa-Djibouti Railway (Djibouti port section). Additionally, the products have been applied in major projects such as the Yangtze-to-Huaihe Water Diversion Project, Beijing Daxing International Airport, and the Zhengzhou-Wanzhou High-Speed Railway.
The launch of this new composite geomembrane further enriches TDF's product line in the field of geosynthetic materials, providing new anti-seepage solution options for sectors such as water conservancy, transportation, environmental protection, and mining.
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