Sodium Bentonite Waterproof Blanket
Description
Technical Parameters
As a natural eco-friendly anti-seepage material, sodium bentonite waterproof blanket leverages the characteristic of bentonite swelling upon contact with water to form a dense gel layer, making it a preferred alternative to traditional anti-seepage membranes in landfills, artificial lakes and hydraulic engineering projects. Our sodium bentonite waterproof blanket uses natural sodium bentonite as the core raw material, paired with high-strength non-woven and woven geotextiles. Needle punching locks bentonite particles firmly between the two fabric layers to avoid powder migration or local material deficiency. This sodium bentonite waterproof blanket achieves a permeability coefficient below 1×10⁻⁹ cm/s and a water swelling ratio of 15-20 times its own weight. It features self-healing performance that adapts to minor settlement or cracks in the base layer to sustain stable anti-seepage effects. Our products have been applied in multiple large-scale artificial lake and landfill projects nationwide, maintaining stable anti-seepage performance after over 12 years of service.
Unlike some manufacturers in the market that counterfeit sodium bentonite with calcium bentonite or supply insufficient bentonite filling quantity, we strictly control the filling weight per square meter of sodium bentonite for specifications including 4500g/㎡, 5000g/㎡ and 5500g/㎡, with error controlled within ±5%. The sodium bentonite we adopt is sourced from high-quality Inner Mongolia mining areas with montmorillonite content exceeding 85%, delivering superior swelling performance and durability compared to ordinary calcium-modified products. In terms of construction, this product requires no welding or adhesive-only overlapping and sealing with bentonite powder are needed for laying, boosting construction efficiency by over 30% versus HDPE geomembranes, with lower construction environment requirements and compatibility with low-temperature and damp base surfaces. For overseas agents, this product features moderate technical barriers, a wide range of applicable scenarios and stable repeat order demands, serving as a high-quality product category to expand environmental and hydraulic engineering clientele.
Specification Parameters
|
Parameter Item |
Index (5000g/㎡ example) |
|
Bentonite Type |
Natural sodium bentonite |
|
Mass per Unit Area |
4000g/㎡ ~ 6000g/㎡ |
|
Width |
2m / 3m / 6m |
|
Bentonite Swelling Ratio |
≥15 times |
|
Permeability Coefficient |
≤1×10⁻⁹ cm/s |
|
Hydrostatic Pressure Resistance |
0.6MPa, no leakage within 24h |
Application Fields
√ Anti-seepage of municipal solid waste landfills and hazardous waste landfills
√ Anti-seepage of artificial lakes, landscape rivers and reservoirs
√ Anti-seepage of top slabs of underground parking lots and roof gardens
√ Anti-seepage of hydraulic channels and water storage tanks
√ Anti-seepage of tailings ponds and ash residue yards
√ Auxiliary anti-seepage for subway and tunnel works
Customization Capacity
We provide full-specification customization services for sodium bentonite waterproof blankets. Mass per unit area ranging from 3000g/㎡ to 8000g/㎡ can be produced on demand, with a maximum width of 6 meters and customizable roll lengths to reduce on-site lap loss. Surface fabrics can be selected as ordinary staple fiber geotextile or filament geotextile, and composite PE film layers can be added per client demand to further enhance anti-seepage performance. OEM private label production is supported, with packaging labels and product tags fully customized to client brand designs. The MOQ is only 1,000 ㎡, allowing mixed loading of different specifications to help agents flexibly respond to project demands of varying scales and reduce inventory pressure.
Payment Terms
We offer flexible and diversified payment plans fully adapted to overseas purchasers' capital turnover rhythms. Standard spot orders adopt a settlement method of 30% advance payment + 70% balance payment, with the balance payable against copy of bill of lading to guarantee transaction safety for both parties. Customized product orders adopt 50% advance payment + 50% balance payment, with full synchronization of production progress to align capital and delivery schedules precisely. US dollar telegraphic transfer settlement is supported, and letters of credit can be negotiated for large-volume project orders. Tiered price discount systems are available for long-term cooperative agents-higher annual purchase volumes correspond to stronger unit price concessions, empowering agents to secure stronger price competitiveness in local markets.
Qualification Certifications
Our sodium bentonite waterproof blanket is manufactured in strict compliance with national standard GB/T 30107, with ISO9001 quality management system certification and ISO14001 environmental management system certification obtained. The product meets relevant international standards for environmental performance. We can provide testing reports issued by authoritative third-party institutions covering full core performance indicators including permeability coefficient, swelling ratio and hydrostatic pressure resistance, and coordinate special testing by international bodies such as SGS and BV based on export destination market requirements. As a member unit of the China Waterproof Building Materials Association, our products have repeatedly been selected into the Recommended Product Directory for Engineering Construction, designated supply brands for numerous design institutes and general contractors.
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