Explore our top-performing waterproofing, drainage, and soil reinforcement systems manufactured to international standards.
Ethylene-vinyl acetate (EVA) geomembranes represent the pinnacle of flexible thermoplastic copolymer barriers. Unlike standard High-Density Polyethylene (HDPE), EVA geomembranes offer exceptional elasticity, stress-cracking resistance, and low-temperature performance. These unique characteristics make them the preferred material for complex geological terrains, deep hydraulic channels, and hazardous waste containment structures where structural movements and high pressure are expected.
As global environmental regulations tighten, the demand for high-performance lining systems has escalated. From mine tailing ponds to high-speed rail tunnels, engineers are transitioning from traditional clay or plain plastics to specialized copolymer geomembranes. This evolution is driven by the necessity for long-term stability, chemical inertness, and ease of installation in sub-optimal environments.
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Located at the north end of Fufeng Street, Lingcheng District, Dezhou, Shandong Province, Shandong Hongyue Environmental Engineering Co., Ltd. is a leading scientific and technological geotechnical material manufacturer integrating engineering material production, sales, design, and construction services. Registered with a capital of 105 million yuan, our facility stands as one of the largest and most advanced production bases of geotechnical materials in China.
Since our establishment, we have achieved rapid growth. Our comprehensive portfolio includes geotextiles, geomembranes, composite geomembranes, waterproof boards, bentonite waterproof blankets (GCL), 3D composite drainage networks, drainage boards, flexible pervious pipes, ecological bags, and cement blankets. With high-quality products and a professional sales and technical team, our solutions are widely used in highways, railways, bridges, tunnels, reservoir water conservancy, artificial lakes, mining, and agricultural containment.
A visual inspection of our state-of-the-art manufacturing plants, storage facilities, and advanced laboratories in Dezhou, Shandong.
From raw polymer chip preparation to melt extrusion and multi-layer structural reinforcement, explore our engineering precision.
The main raw materials include high-quality polyester chips, polypropylene filament, and custom vinyl acetate content copolymers (for EVA). All materials undergo rigorous moisture level checking, purity tests, and density verification to guarantee starting material consistency.
Polyester/EVA slices are melted at precise high-temperature ranges inside specialized screw extruders. For complex structures, polypropylene filament or viscose fibers are integrated to achieve composite matrices under optimal pressure limits.
The extruded fiber melt is sprayed through the spinneret to form a uniform network structure on a moving conveyor belt. Heat-setting rollers and draft tension controllers determine structural density, weight per square meter, and multidirectional tensile strength.
Technical performance parameters highlighting why engineering specs are shifting to EVA geomembranes for critical infrastructure projects.
| Technical Characteristic | EVA Geomembrane | HDPE Geomembrane | LLDPE Geomembrane |
|---|---|---|---|
| Vinyl Acetate (VA) Content | 12% - 28% | 0% (Crystalline Polyethylene) | 0% - 2% (Short-chain branches) |
| Elongation at Break (%) | > 750% (Highly elastic) | > 600% (Medium stiffness) | > 700% (Flexible) |
| Environmental Stress Crack Resistance (ESCR) | Extremely High (>1500 hrs) | High (>500 hrs) | Very High (>1000 hrs) |
| Low-Temperature Flexibility | Down to -45°C | Down to -25°C | Down to -35°C |
| Thermal Welding Temperature | 160°C - 220°C (Quick, reliable weld) | 380°C - 450°C (Requires high precision) | 280°C - 350°C (Moderate) |
| Key Infrastructure Application | Tunnels, Reservoirs, Hazardous Vaults | Flat Landfills, Large Evaporation Ponds | Mining Heap Leach, Agricultural Liners |
Our geotechnical systems have been verified across massive environmental projects, ensuring zero seepage and prolonged structural life.
Geomembranes play a vital role in preventing sub-surface seepage in deep reservoirs and channels. By creating an impermeable interface, they avoid structural erosion and water resource depletion in sand-bed canals.
Rivers and dynamic channels require robust protection barriers. Placing composite liners prevents under-levee piping issues and safeguards agricultural zones from flood breaches.
Preventing leachate from seeping into aquifers is a priority. Heavy-duty composite EVA/HDPE systems act as primary barriers, keeping dangerous contaminants safely isolated within the landfill cell.
Chemical and petrochemical containment pads require absolute chemical inertness. Our geomembranes resist hydrocarbon breakdown and keep chemical runoffs completely contained under long-term industrial exposures.
Certified laboratories ensuring that every roll shipped conforms to international standards like ISO9001 and CE requirements.
Shandong Hongyue Environmental Engineering Co., Ltd. has established a comprehensive testing laboratory. All products undergo physical parameter validation (thickness, unit weight, tensile strength, tear resistance, CBR puncture strength, carbon black dispersion) and chemical aging chamber evaluations (UV exposure, environmental stress crack testing).
The quality of all products produced by the company has reached or exceeded international standards, and passed the certification of China National Testing Center, and all passed the national quality supervision and sampling inspection commissioned by the State Administration of Quality Supervision and Inspection.
Achieving a durable seepage control system requires precision across three critical phases: proper material selection, exact site laying procedures, and ongoing maintenance.
Ensure that your geomembrane matches project environmental parameters. For tunnels or highly irregular rock faces, choose EVA for its high elastic elongation properties. Standardize thickness between 0.3mm to 2.0mm depending on pressure loads and mechanical puncture possibilities.
Site preparation is vital: clear all sharp stones, roots, and foreign materials. Apply geomembrane rolls evenly. Ensure joint areas are clean and use dual-track hot-wedge welding to create solid fusion channels. Conduct non-destructive air-pressure testing on all weld joints.
Protect geomembranes from direct heavy equipment tracks. Regularly check exposed liner segments for mechanical damage or aging signs. In case of tears, execute localized extrusion welding patches immediately after surface preparation.
From slope protection geocells to advanced concrete geotextile backings, discover our materials deployed in critical projects globally.
Addressing key queries from project procurement managers, civil engineers, and environmental agencies.
EVA (Ethylene-Vinyl Acetate) geomembranes incorporate vinyl acetate copolymers, offering significantly higher elasticity, better flexibility at low temperatures, and superior environmental stress-crack resistance (ESCR) compared to HDPE. HDPE is more rigid and highly chemically resistant to specific hydrocarbons, making it suitable for flat-ground landfills, while EVA is better for structural movement zones, tunnels, and complex terrains.
The VA content dictates the balance of properties. Higher VA content (up to 28%) increases flexibility, elongation, impact strength, and transparency while lowering the melting point for easier thermal welding. Lower VA content keeps the sheet stiffer and boosts tensile strength at yield.
Dual-track hot-wedge welding is recommended for primary seam lengths, which creates a central air channel that can be pressure-tested to verify weld integrity. For corners, penetrations, and patch repairs, hand-held hot air or extrusion welding is utilized.
Yes. We offer fully customizable thickness profiles from 0.3mm to 2.0mm, and roll widths ranging up to 6 meters or more to reduce the number of on-site seams required, thereby decreasing risks of leakage and installation time.
Shandong Hongyue Environmental Engineering Co., Ltd. prides itself on its robust engineering lineage. Having obtained ISO9001 international quality system certification, ISO14000 environmental system certification, and ISO45001 occupational health and safety management system certification, we ensure our global clients receive high-standard civil materials.
Our materials undergo meticulous supervision to secure compliance with ASTM, GRI, and local standards. As a result, our exports to the Americas, Europe, Southeast Asia, and Australia continue to grow, offering top-tier seepage barriers for critical civil engineering.
Complete your installation kit with our certified selection of filtration geotextiles, structural geogrids, and composite drainage boards.
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