lit. Two Cloth, One Membrane

This product is a geosynthetic material made of geotextile (long and short filament needle punched geotextile, woven geotextile, plastic woven fabric, etc.) and polymer material (HDPE membrane, LDPE membrane, EVA membrane, etc.) of more than two kinds of materials after calendering, hot melt composite.

Two Fabrics and One Membrane Product Overview

This product is a geosynthetic material made of geotextile (long and short filament needle punched geotextile, woven geotextile, plastic woven fabric, etc.) and polymer material (HDPE membrane, LDPE membrane, EVA membrane, etc.) of more than two kinds of materials after calendering, hot melt composite.

Two cloths and one membrane performance characteristics

◎ Our company has accumulated composite geomembrane production experience, solved the similar products of uneven length and width, uneven thickness of the film, composite produced more holes and other defects, each piece of product has been strictly inspected, so that the product in the project application to maximize its role.

◎ Our company has now developed into a production enterprise with both calendering and thermal composite processes, and the width of the product has reached 7 meters, which reduces the seams, lowers the project cost, shortens the construction period and also reduces the hidden dangers due to the improper treatment of the seams, compared with the narrow width of the similar products.

◎ Geotextile is used instead of granular material as geomembrane protection layer to protect geomembrane impermeable layer from damage, reduce the grading requirement of bedding granularity, and act as drainage.

◎ Large friction coefficient, can prevent the cover layer from slipping, than simple HDPE film, composite geomembrane in the nonwoven fabric has a larger friction coefficient, composite geomembrane can make the slope ratio increase to reduce the footprint.

◎ Higher mechanical strength for tensile, tearing, top breaking and puncture.

◎ There is a certain amount of deformation, the stress generated by the concave and convex defects of the sub-bedding layer is dispersed faster, and the strain capacity is stronger.

◎ The pore pressure and buoyancy force on the contact surface with soil can be easily dissipated.

◎ It has certain heat preservation effect, which reduces the damage to geomembrane caused by freezing and expansion of soil body, thus reducing the deformation of soil body.

◎ Adopting buried type laying, it has excellent anti-aging performance and reduces the maintenance of the project.

◎ Laying construction is simple, reducing transportation, lowering the project cost and shortening the construction period.

Product Classification

One cloth and one film Base cloth: 100-1000g/m2 Film thickness: 0.2-2.0mm.

Two cloths and one film Base cloth: 80-600g/m2 Film thickness: 0.2-2.0mm.

One cloth, two films Base cloth: 100-1000g/m2 Film thickness: 0.2-0.8mm; ◎Multi-cloth, multi-layer film Base cloth: 80-600g/m2 Film thickness: 0.2-0.8mm.

Multi-Fabric Multi-Film Base cloth: 100-1000g/m2 Film thickness: 0.2-0.8mm.

Bone Refining One Membrane Product Specifications

Width: 2-7 meters; Weight: 300-2600g/m²

Two cloths and one membrane use range

Two cloths and one membrane can be widely used because of its good plane drainage, excellent seepage control characteristics and high mechanical strength such as tensile, tearing, top breaking and puncture:

1, river embankments, lake dams, tailings dams and reservoirs, water diversion and transfer channels, liquid storage pools (pits, mines);.

2, subway, basement and tunnel, tunnel seepage control lining.

3、Roadbed and other foundation salt seepage control.

4, embankment, dam before the horizontal seepage control cover, foundation vertical seepage control layer, construction cofferdam, waste yard.

5, seawater, freshwater farms.

6, roads, highways, railroads, waterproof layer of expansive soil and humid loess.

Construction method of two cloths and one membrane

I. Construction Notes:

1, the use of buried type, covering thickness should not be less than 30cm.

2, the entire seepage control system should be: bedding layer, seepage control layer, transition layer, protective layer of responsibility.

3, the soil should be solid, to avoid uneven subsidence, cracks, seepage control range of turf, tree roots should be removed. The contact surface with the membrane is paved with sand or clay of small particle size for the protective layer.

4, when laying composite geotechnical membrane do not pull too tight, both ends buried in the soil part of the corrugated better, especially with rigid materials anchoring, should leave a certain amount of expansion and contraction.

5, construction, should avoid stones, heavy objects directly on the composite geomembrane, the best side of the construction, the side of the paving membrane, the side cover the protective layer.

II. Seams:

1. Laying:

A, sweeping the paving surface requires the substrate flat, no unevenness, no sharp objects, such as stones, wires, sticks, etc., for weeds should be sprayed with weed killer.

B, it is best to lay along a certain direction, and do not pull too tight, there should be a certain amount of expansion and contraction, in order to adapt to the deformation of the substrate.

C, both sides are reserved a certain width of PE film and PE film bonding layer, paving should be adjusted to each unit of composite geomembrane towards, in order to facilitate the welding of two units of composite geomembrane.

D、After laying, it should be pressed with sand bag to prevent the wind from moving and affecting the welding of the edge of composite geomembrane in the next step.

2. Welding:

A, for the paved composite geomembrane, the edge joints require no dirt, moisture, dust, etc..

B. Before welding, we should adjust the PE monofilm at the two edges of the seams, so that it laps a certain width, and is flat and wrinkle-free.

C. When welding, the company sends technicians to be responsible for welding or technical guidance, and the welding is carried out by using the special double-track automatic crawler welding.