EVA Geomembrane — Flexible Waterproof Liner for Tunnels, Subways & Underground Projects
Ethylene-vinyl acetate (EVA) geomembrane liners designed for underground waterproofing and special engineering projects. Superior flexibility, 0.8–3.0 mm thickness, factory-direct supply and global delivery.
مرجع ASTM/GRI/ISO
المصنع مباشرة
تصدير العالمية
الخصائص الأساسية ل إيفا غشاء أرضي
EVA geomembrane maintains elongation and shape even at low temperatures, ensuring reliable performance on complex ground surfaces.
EVA liner absorbs strong dynamic impact energy, making it suitable for heavy machinery loads and pressure resistance.
With balanced static and dynamic puncture strength, EVA geomembrane provides durable protection against punctures and mechanical damage.
EVA geomembrane resists acids, alkalis, and certain organic solvents, ensuring long-term chemical durability.
Enhanced with antioxidants, EVA geomembrane offers superior aging resistance and UV stability for outdoor applications.
Performs reliably between -70°C and 80°C, with better performance than PVC and HDPE liners under extreme conditions.
Made without halogens or heavy metal additives, EVA geomembrane is safe, recyclable, and environmentally friendly.
تعرف على إيفا غشاء أرضي
EVA geomembrane is a waterproof liner made from ethylene-vinyl acetate (EVA) material. It combines high flexibility, elasticity, and durability, making it ideal for lining projects.
EVA geomembrane is produced from EVA resin blended with stabilizers and anti-aging additives. This unique formulation gives EVA liners excellent weather, chemical, and UV resistance.
EVA geomembranes are commonly manufactured in thicknesses from 0.5 mm to 3.0 mm. The choice of thickness depends on project design, required durability, and site conditions.
EVA geomembrane is widely used in reservoirs, fish ponds, mining projects, waste landfills, and tunnels. The EVA liner adapts well to uneven ground, ensuring reliable long-term protection.
With proper installation and protection, EVA geomembranes can last 15–25 years. Their resistance to UV, chemicals, and extreme temperatures ensures long-term performance.
أنواع الأسطح وخيارات الألوان of EVA Geomembrane
Surface Type:
Smooth EVA geomembrane – Standard choice for tunnels, basements, and subway waterproofing. Smooth surfaces ensure easy welding and reliable anti-seepage performance.
Color Options:
White EVA geomembrane – Improves visibility inside tunnels and subways, commonly used in underground waterproofing projects.
Gray EVA geomembrane – Popular for basements, foundations, and roof waterproofing.
Black EVA geomembrane – General-purpose waterproof liner for reservoirs and anti-seepage works.
EVA Geomembrane Thickness Guide والتطبيقات
| سمك (مم) | Key Performance Features | التطبيقات النموذجية | المواصفات والملاحظات الموصى بها |
|---|---|---|---|
| 1.00 mm EVA geomembrane liner |
· High dynamic impact absorption · Wide temperature performance · Medium static puncture protection |
· Subgrade lining for light traffic areas · Agricultural irrigation canals · Municipal stormwater reservoirs |
· Smooth or textured EVA geomembrane · Recommend 10 cm sand cushion or geotextile isolation |
| 1.20 mm EVA geomembrane sheet |
· Enhanced puncture resistance · Excellent crack propagation resistance · Superior chemical and aging durability |
· Medium-size landfill leachate ponds · Sewage treatment basins · Tunnel waterproofing liners |
· Single or double textured surfaces for higher friction · Combine with geotextile for improved stability |
| 1.50 mm EVA waterproof liner |
· High tensile strength & impact resistance · Long-term durability · Excellent root puncture resistance |
· Medium-size landfill capping · Main traffic subgrade channels · External tunnel waterproofing |
· Double textured EVA geomembrane recommended · Seam testing with vacuum or spark detection |
| 2.00 mm Engineering-grade EVA liner |
· Extreme puncture and UV resistance · Service life up to 30 years |
· Hazardous waste containment sites · Large sludge concentration basins · Heavy load traffic subgrade lining |
· Multi-layer composite systems · Automated welding & strict seam testing |
| 2.50–3.00 mm Heavy-duty EVA geomembrane |
· Extreme crack resistance & impact resistance · Superior aging performance · Designed for special engineering |
· Nuclear waste storage facilities · Deep foundation waterproofing · Large industrial tailings dams |
· Installed by professional teams · Service life over 30 years |
EVA Geomembrane Specifications, ورقة الاختبار والبيانات
| ملكية | طريقة الاختبار (المرجع) | Typical Performance | ملحوظة |
|---|---|---|---|
| كثافة | أستم D1505 | 0.92–0.96 g/cm³ | eva geomembrane density, lighter than PVC |
| خصائص الشد (الخضوع والكسر) | أستم D6693 | Moderate tensile strength, high elongation | good flexibility & break resistance |
| مقاومة المسيل للدموع | أستم D1004 | Good anti-tear performance | resists crack propagation in thin liners |
| مقاومة الثقب | أستم D4833 | Moderate to high, depending on thickness | impact & puncture resistance for waterproofing |
| الاستقرار الكيميائي | ASTM D543 | Resistant to most mild acids & bases | not as strong as HDPE against strong chemicals |
| UV & Weather Resistance | ASTM G154 | Moderate, requires stabilizers | better than LDPE, lower than HDPE |
| الاستقرار الأبعاد | أستم D1204 | ±2% | thermal stability under construction conditions |
| Flexibility at Low Temperature | ASTM D746 | Excellent flexibility down to –40℃ | advantage of eva geomembrane over hdpe |
| خدمة الحياة | — | 15–25 years (depending on exposure) | suitable for ponds, tunnels, waterproofing liners |
إيفا غشاء أرضي Installation&Welding
طرق اللحام
Hot Air Welding: EVA geomembranes are highly flexible, making them suitable for hot air welding. This ensures smooth seams in applications like tunnels, reservoirs, and basements.
High-Frequency Welding: Especially effective for thin EVA liners (0.5–1.5 mm), providing strong seam bonding with minimal material deformation.
عرض التداخل: Typically 75–100 mm, smaller than HDPE, since EVA membranes offer excellent flexibility and conform easily to complex structures.
إجراءات مراقبة الجودة (CQA)
اللحامات التجريبية: Conducted at the start of each workday to confirm correct temperature and pressure for EVA material.
رسم الخرائط التماس: Each welded seam is logged and traced for inspection, especially in waterproofing projects like underground tunnels or basements.
السجلات: Installation logs should include welding temperature, overlap width, and operator details.
طرق الاختبار
الاختبارات غير المدمرة (NDT):
Air Channel Test: Applied to double-track hot air seams.
اختبار صندوق الفراغ: Ensures no leakage in critical waterproofing areas.
الاختبارات التدميرية (DT):
Peel & Shear Tests: Carried out on EVA weld samples every 150–300 m² to meet ASTM D6392 requirements.
Compared to HDPE liners, EVA geomembranes are easier to weld, adapt better to irregular foundations, and provide superior flexibility, making them ideal for tunnels, basements, and complex waterproofing projects.
لماذا تختار أخصائي الفسفور الأبيض？
Over the years, we have established ourselves among trusted EVA geomembrane manufacturers and global EVA geomembrane distributors. Our focus is on delivering reliable liners that meet critical engineering projects.
- Free Samples of EVA Geomembrane Sheet
- دعم المشروع الخبراء
- ضمان جودة موثوق
- أكثر من 10 سنوات من الخبرة في التصنيع
- توريد المصنع مباشرة
أساسيات Wholesale EVA Geomembrane
يرجى تضمين نوع المشروع (بركة، مكب نفايات، تعدين، خزان)، والسمك المطلوب، والسطح (ناعم / محكم)، وتفضيل حجم اللفة، وشروط التسليم (FOB/CIF + المنفذ).
Yes, free EVA geomembrane sheet samples are available for evaluation prior to bulk purchase.
المهلة النموذجية هي 15-25 يومًا للإنتاج، بالإضافة إلى جدول الشحن اعتمادًا على ميناء الوجهة.
عرض اللفة القياسي للتصدير هو 5.8 م، وهو الأمثل لتحميل الحاويات. عروض أطول مثل 7-8 م وتتوفر أيضًا، وفقًا لظروف تحميل الحاويات الفعلية. يتراوح طول اللفة عادةً من 50-150 م، يتم تعديلها حسب السُمك. يمكن توفير الألواح الجاهزة المخصصة إذا لزم الأمر.
The weight of an EVA geomembrane liner is calculated as:
Weight (g/m²) = Thickness (mm) × Density (g/cm³) × 1000
For EVA geomembrane with density 0.92–0.96 g/cm³ (per ASTM D792):
أ 1.0 mm EVA liner weighs about 920–960 g/m²
أ 1.5 mm EVA liner weighs about 1380–1440 g/m²
أ 2.0 mm EVA liner weighs about 1840–1920 g/m²
يتم حساب السعة على أساس 40HQ ≈ 25 طن وزن التحميل. يعتمد عدد اللفة الدقيق على السُمك وعرض اللفة؛ نحسب حسب وزن البطانة لكل متر مربع والحد الأقصى لوزن الحاوية.
الحد الأدنى الموصى به هو 5000 متر مربع. وبما أن الغشاء الأرضي ضخم وثقيل، فإننا نقترح واحدًا على الأقل حاوية 20GP للشحن الفعال. يمكننا أيضًا المساعدة في توحيد مع البضائع الأخرى إذا لزم الأمر.
نحن أ الصين الشركة المصنعة للغشاء الأرضي، ويمكن ترتيب الشحنات من أي ميناء صيني رئيسي مثل تشينغداو وشانغهاي ونينغبو.
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