GEOSYNTHETICS

Waterproofing geomembranes

ALVATECH geomembranes are polyethylene sheets (HDPE and LLDPE) that are used as waterproofing barriers in mining, environmental, hydraulic and civil works projects.

Among their many features are the high mechanical performance, durability, chemical resistance and excellent welding capability. They are manufactured using the latest Calendering System technology, offering a width of 7.5 m and a range of gauges from 0.75 mm up to 3 mm. The geomembranes are available in two surface finishes, smooth and textured; the latter with multiple spikes measuring > 0.9 mm, which makes the sheet highly stable when waterproofing steep slopes (high coefficient and angle of friction).

SOLUTIONS FOR GEOSYNTHETICS

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ALVATECH 5002

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ALVATECH
FIX

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ALVATECH LLDPE

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ALVATECH VLDPE

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ALVATECH HTR

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ALVATECH
HP-OIT

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ALVATECH WHITE LAYER

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ALVATECH RADON BARRIER

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ALVATECH TERMOFILM

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ALVATECH COLOR

ALVATECH geomembranes are the optimal solution for waterproofing

Landfills

Municipal waste landfills, manure heaps at livestock farms or industrial deposits.

Mining

Waterproofing of heap leaching pads in heap leaching (Au, Ag, Cu) and in non-leaching mining (I, Li…) to optimize extraction performance.

Ponds

Irrigation ponds for agriculture, golf courses, in high mountain areas for artificial snow, solar thermal plants, hydroelectric plants and other industrial applications.

Channels

Agricultural irrigation channels or transfers between watersheds.

Aquaculture

Intensive farming of shrimp, tilapia and panga. In shallow, waterproofed ponds, as a preventative measure to increase production performance.

Floating covers

To eliminate evaporation in reservoirs and to deodorize waste ponds that emit foul-smelling gases.

Environmental works

To decontaminate soil, dehydrate sludge, purifier plants, dredging in marine ports, second waterproofing barriers in oil pipelines, petrol stations, etc.

Civil works

Road and railway tunnels, waterproofing of building foundations, as a vapor barrier to prevent moisture and as a radon gas barrier.

We use 100% recyclable raw materials and latest generation technology in the manufacture of our High-Density Polyethylene Geomembranes for waterproofing and containing toxic waste, thus guaranteeing our ongoing commitment to quality and protecting the environment.

ALVATECH geomembranes are the optimal solution for waterproofing:

Landfills

Municipal waste landfills, manure heaps at livestock farms or industrial deposits.

Mining

Waterproofing of heap leaching pads in heap leaching (Au, Ag, Cu) and in non-leaching mining (I, Li…) to optimize extraction performance.

Ponds

Irrigation ponds for agriculture, golf courses, in high mountain areas for artificial snow, solar thermal plants, hydroelectric plants and other industrial applications.

Channels

Agricultural irrigation channels or transfers between watersheds.

Aquaculture

Intensive farming of shrimp, tilapia and panga. In shallow, waterproofed ponds, as a preventative measure to increase production performance.

Floating covers

To eliminate evaporation in reservoirs and to deodorize waste ponds that emit foul-smelling gases.

Environmental works

To decontaminate soil, dehydrate sludge, purifier plants, dredging in marine ports, second waterproofing barriers in oil pipelines, petrol stations, etc.

Civil works

Road and railway tunnels, waterproofing of building foundations, as a vapor barrier to prevent moisture and as a radon gas barrier.

Our Alvatech® Geomembranes are manufactured meeting and exceeding the quality standards required by current regulations in each market, such as GM13 and GM17. All of our processes follow the ISO 9001 quality management system.

We use 100% recyclable raw materials and latest generation technology in the manufacture of our High-Density Polyethylene Geomembranes for waterproofing and containing toxic waste, thus guaranteeing our ongoing commitment to quality and protecting the environment.

ALVATECH 5002

Smooth high-density polyethylene (HDPE) waterproofing sheet. The product’s specific formulation provides it with excellent weldability, enhancing its mechanical properties and chemical resistance. It is manufactured by a flat-die extrusion process (calendering system), using the latest technology that ensures excellent thickness control and uniform surface finish (with a slight texture that makes it easier to install the product on site).

Its 7.50 m width optimizes installation costs and quality control on site, considerably reducing the number of welding seams required, compared to a narrower sheet.

FEATURES

  • Outstanding chemical resistance

  • High mechanical resistance

  • Durability

  • Excellent weldability

  • Flexible and multi-purpose

  • Enhanced structural performance

APPLICATIONS

  • Irrigation ponds, channels, etc.

  • Landfills (municipal and industrial waste)

  • Heap leaching

  • Tailings dams

  • Floating covers

  • Wastewater treatment and purification plants

  • Aquaculture

  • Ornamental lakes, artificial snow, etc.

  • Civil works (construction, railways and roads)

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH FIX

High density polyethylene (HDPE) or linear low density polyethylene waterproofing sheet. Its surface is textured on one or both sides, with multiple spikes (57,000 spikes/m2) over 0.9 mm-tall, making the sheet highly stable when waterproofing steep slopes (high coefficient and angle of friction).

We are the only company that offers a textured geomembrane, 7.5 m-wide, which optimizes installation costs by reducing the number of welding seams required. Recommended for slopes of approximately 20% – 12° or more.

FEATURES

  • High coefficient of friction

  • One of the widest in the world: 7.5 m

  • Spike height > 0.90 mm

  • Excellent sheet-thickness control

  • Uniform surface

  • Smooth borders for easy welding

APPLICATIONS

  • Landfills (municipal and industrial waste)

  • Landfill capping

  • Heap leaching

  • Tailings dams

  • Lakes

  • Irrigation ponds

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH LLDPE 

Waterproofing sheet formulated with linear low-density polyethylene that provides the product with optimal flexibility and weldability. It is used to seal landfills, floating covers and, in general, structures that require a waterproofing barrier that is more elastic than high density polyethylene.

It is also available in a textured version: Alvatech® LLDPE FIX, textured on one or both sides, 7.50 m-wide. It offers a high coefficient of friction on steep slopes.

FEATURES

  • High chemical resistance

  • High mechanical resistance

  • Durability

  • Easier installation

  • Highly flexible

APPLICATIONS

  • Floating covers

  • Landfill capping

  • Heap leaching

  • Tailings dams

  • Salt evaporation

  • Raincoats

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH VLDPE 

A waterproofing sheet formulated with very low-density polyethylene, which provides the product with excellent flexibility and weldability. This membrane is even more flexible than the LLDPE geomembrane.

It is used in structures with highly irregular surfaces, improving adherence to them. Some examples are bladder tanks, underground structures, floating covers, green roofs, perimeter edges in reservoirs, etc.

FEATURES

  • Outstanding flexibility.

  • Good chemical resistance.

  • Good mechanical properties.

  • Highly weather-resistant.

APPLICATIONS

  • Floating covers

  • Salt evaporation ponds

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

ALVATECH HTR

A high-density polyethylene membrane designed for applications where the waterproofing barrier has to withstand high temperatures (over 60°Celsius). It is mainly used in food industry processes, hot springs, wastewater treatment, etc.

The Alvatech® HTR geomembrane is available with a smooth or textured surface, with spikes on both sides for waterproofing on steep slopes, and sheet widths of 5.8 m and 7.5 m.

FEATURES

  • Resistant up to 100°C.

  • High chemical resistance.

  • Extremely durable.

  • Excellent mechanical resistance.

APPLICATIONS

  • Slurry ponds

  • Olive mill wastewater ponds

  • Landfills (municipal and industrial waste)

  • Thermal energy storage tanks

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH HP-OIT 

A high-density polyethylene (HDPE) or linear low-density polyethylene (LLDPE) waterproofing sheet with extra antioxidant additives that extend its service life.

This extra stabilization allows the geomembrane to be used in projects that include more abrasive chemicals or more extreme service conditions. In this environment the added antioxidants are more resistant and are retained inside the polymer matrix. Consequently, the mechanical properties of the Alvatech® HP-OIT geomembrane remain intact over time.

FEATURES

  • High chemical resistance.

  • Excellent mechanical properties.

  • Extremely durable.

  • Greater UV resistance.

APPLICATIONS

  • Landfills (municipal and industrial waste)

  • Landfill capping

  • Wastewater treatment and purification plants

  • Heap leaching

  • Tailings dams

  • Salt evaporation ponds

  • Ponds and secondary containment

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH WHITE LAYER 

A bicolor polyethylene (HDPE or LLDPE) waterproofing membrane, with a white upper surface and black underside.

The white surface minimizes the temperature increase that a black membrane sustains, the difference being between 20 and 23°C. As a result, it is possible to work for longer periods and the number of wrinkles/waves in the lining is reduced.

FEATURES

  • Greater visibility in closed spaces (tunnels and water tanks).

  • Enhanced structural performance.

  • Less thermal ageing.

  • Facilitates visual inspections during installation.

  • Flatter.

APPLICATIONS

  • Floating covers

  • Reservoirs

  • Raincoats

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

ALVATECH RADON BARRIER 

A waterproofing membrane made of EVOH polyethylene copolymer, which is specifically designed to act as a radon gas barrier, preventing the emissions of this hazardous gas from entering buildings.

FEATURES

  • Extremely flexible and adaptable.

  • Extremely durable.

  • Easily installed thanks to its width.

APPLICATIONS

  • Civil works (Buildings)

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

 

ALVATECH TERMOFILM

This bioleaching membrane, also called Thermofilm, is a polyethylene sheet used in the bioleaching of sulphide metals in low-grade mining.

FEATURES

  • Reduces water evaporation by around 80%.

  • Lower operating costs.

  • High thermal conductivity which improves the uptake kinetics by up to 4%.

  • Improved extraction performance.

  • Sheets with very large widths that can cover large surfaces.

  • More uniform irrigation.

APPLICATIONS

  • Heap leaching

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

ALVATECH COLOR 

The Alvatech® Color geomembranes are specifically designed to enhance the surroundings and reduce visual impact. They are most commonly used for landscaping and garden projects, waterproofing artificial snow ponds, reservoirs, canals, ornamental lakes, tunnels and galleries, etc.

FEATURES

  • They blend into the surroundings.

  • Reduced visual impact.

  • Less polymer thermal stress.

  • Highly durable.

  • Flatter.

  • Easier installation.

APPLICATIONS

  • Reservoirs and canals

  • Ornamental lakes

  • Golf courses

  • Artificial snow ponds

ACCESSORY PRODUCTS

E-Type profile
Alvatech® welding wire

Alvatech® welding wire

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