Membrane-coated bentonite waterproofing blankets are high-performance industrial waterproofing materials.

- Structural Composition: Utilizing a high-strength geotextile composite structure,

the top layer is a high-density polyethylene (HDPE) film, the middle layer is sodium bentonite,

and the bottom layer is a woven fabric, fixed in place by a needle-punching process.

- Waterproofing Principle: Utilizing the water-absorbing property of sodium bentonite,

it expands to 15-17 times its original volume after absorbing water, forming a dense gel layer, thus achieving waterproofing.

- Performance Characteristics: It possesses excellent waterproofing and seepage prevention performance,

a low vertical permeability coefficient, and strong resistance to hydrostatic pressure.

Construction is simple and unaffected by temperature; it can be applied directly in cold and humid environments.

Furthermore, it has strong self-healing capabilities; the expanded bentonite can repair minor cracks on concrete surfaces.

In addition, this material is environmentally friendly, made from natural sodium bentonite, and is harmless to humans and the environment.

- Application scenarios: Mainly used for seepage and leakage prevention in underground construction projects such as tunnels,

subways, and basements, as well as water feature projects.

It is also suitable for waterproofing projects in landfills, airports, water conservancy and other fields.