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
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)
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
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
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
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
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
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
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)
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
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
