GROUP

GEOMEMBRANESALVATECH®

Founded in 1964, the Armando Alvarez Group is composed of different companies which when combined make us  the leading polyethylene film and sheet manufacturer in Spain and one of the first in Europe. Our annual production is around 300,000 tones.

Thanks to the companies’ interrelation, all of our customers’ demands and requirements can be taken care of, our goal being to create and develop new products, working under ISO Quality Systems.

GEOMEMBRANESALVATECH®

Sotrafa SA is a manufacturer belonging to the Armando Álvarez Group, a leader in polyethylene film and sheet processing in Europe. Sotrafa has a wide experience in several sectors and is present in more than 46 countries.

Since 2005 Sotrafa has manufactured and supplied more than 40 million square meters of geomembrane for many applications, both hydraulic and environmental.

All the range of geomembranes are manufactured under the Quality Certification ISO 9001, comfortably complying with the quality standards required by current regulations in each market:

•European Standards: UNE-EN 13361:2005 (water reservoirs)// UNE-EN 13362:2006 (irrigation channels) // UNE-EN 13491:2006 (tunnels and underground works) //// UNE-EN 13492:2006 (landfills and liquid waste) // UNE-EN 13493:2006 (landfills and solids). And quality labels like ASQUAL.

•Standards GRI GM13 HDPE Geomembranes, smooth and structured.

Manufacturing our products, we only use top brand resins that are 100% virgin. Depending on the thickness, Sotrafa guarantee a perfect performance of the geomembrane.

MEMBER OF INTERNATIONALGEOSYNTHET ICS SOCIETY0099/CPD/A86/0015

Sotrafa Alvatech 5002 HDPE Geomembrane is a waterproofing sheet made of high density polyethylene, smooth both sides. With a specific formulation which improve the welding performance, emphasizing its mechanical properties and chemical resistance.

The Flat-die extrusion (cast) uses the latest technology and provides excellent control of thickness and surface uniformity (with a  slight relief  that favours  product installation on site).

The sheet is available in two widths; 5,8 m and 7,5 m. Using 7.5 m wide  optimizes installation  costs and quality control on site, reducing  the number of welds   by more than 20% over a width of six meters.

For more details of composition, Mechanical properties and product durability, see the datasheet attached.

HDPE GEOMEMBRANE

ALVATECH® 5002

HDPE Geomembrane is supplied in colour black. Other colours can be manufactured. Ask for conditions.

PROPERTIES UNITHDPE GEOMEMBRANE (ALVATECH 5002)

TEST METHODHDPE Geo 1.0 HDPE Geo 1.5 HDPE Geo 2.0 HDPE Geo 2.5

Density g/cm3 > 0.940 > 0.940 > 0.940 > 0.940 UNE-EN ISO 1183 Melt Index(190ºC, 2.16 kg) (190ºC, 5 kg) g/10 min

<1.0<3.0

<1.0<3.0

<1.0<3.0

<1.0<3.0 UNE-EN ISO 1133

Thickness mm 1.00 ± 5 %

1.50 ± 5 %

2.00 ± 5 %

2.50± 5 % UNE-EN 1849-2

Break Strength (1)

Break Elongation (1)

Yield Strength (1)

Yield Elongation (1)

MPa%

MPa%

33 (>26)900 (>700)19 (>16)10 (>8)

33 (>26)900 (>700)19 (>16)10 (>8)

33 (>26)900 (>700)19 (>16)10 (>8)

33 (>26)900 (>700)19 (>16)10 (>8)

UNE-EN ISO 527-3, Text Type 5

Static Puncture Resistance KN >3,3 >4,5 >6,0 >7,0 UNE-EN ISO 12236 Tear Resistance (1) N 150 (>135) 225 (>200) 300 (>270) 375 (>335) UNE ISO 34-1 Temperature Resistance (1) ºC No cracks UNE-EN 495-5 Linear Expansion Coefficient ºC-1 2∙10-4 2∙10-4 2∙10-4 2∙10-4 ASTM D 696 Stability sizeChange measure % <1,0 (<1,5) <1,0 (<1,5) <1,0 (<1,5) <1,0 (<1,5) UNE-EN ISO 14632

Carbon blackCarbon Black ContentParticle SizeAshes ContentCarbon Black Dispersion

% nm % -

2.50 (2.25± 0.25) <25 <0,1 <3

2.50 (2.25± 0.25) <25 <0,1 <3

2.50 (2.25± 0.25) <25 <0,1 <3

2.50 (2.25± 0.25) <25 <0,1 <3

UNE 53375-2

ISO 18553

Oxidative Induction Time (O.I.T) Standard OIT (200ºC, O2, 1 atm) min >100 >100 >100 >100

UNE-EN 728 Oven Aging at 85ºC, Standard OIT (200ºC, O2, 1 atm)-% retained after 90 days. % retained >55 >55 >55 >55

UV Resistance, Standard OIT (200ºC, O2,1 atm) % retained after 1600 h. % retained >55 >55 >55 >55

Stress Cracking (SP-NCTL) (2) h >300 >300 >300 >300 UNE-EN 14576ASTMD 5397

Artificial AgeingReduction Break Elongation (2) % <15 <15 <15 <15 UNE-EN 12224

Oven AgeingReduction Break Elongation (2) % <15 <15 <15 <15 UNE-EN 14575

Water Absorption24 hours6 days

% %

<0.2 <1

<0.2 <1

<0.2 <1

<0.2 <1 UNE-EN ISO 62

Root Resistance - No perforations No perforations No perforations No perforations CEN/TS 14416 Stagnation against gases (m3/m2)/(d.atm) < 4 x 10-4 < 4 x 10-4 < 4 x 10-4 < 4 x 10-4 ASTM D 1434 Hydraulic Permeability (m3/m2)/d < 2 x 10-6 < 2 x 10-6 < 2 x 10-6 < 2 x 10-6 UNE-EN 14150

(1) Both directions (longitudinal and transversal) (2) Both sides. All the values are nominal with a tolerance of ±5%. Those values between parentheses are the minimum ones required by the norm.HDPE Geomembrane ALVATECH 5002 is manufactured by SOTRAFA S.A. (Almería-Spain), a company of the Armando Alvarez Group.ALVATECH 5002 is a High Density Polyethylene liner, available in 5,8m and 7,5m and manufactured with the latest cast system technology.SOTRAFA certifies that HDPE Geomembrane (ALVATECH 5002) satisfactorily meets the quality required by standards UNE-EN 13361:2005 (reservoirs) // UNE-EN 13362:2006 (channels) // UNE-EN 13491:2006 (tunnels and underground works) // UNE-EN 13492:2006 (dumps for liquid waste) // UNE-EN 13493:2006 (dumps for solid waste) and standard GRI GM-13 for 1,5mm y 2,0mm.This information is the result of our experience, it is only provided for reference purposes without contractual value and these values are subject to change without prior notice. SOTRAFA is not responsible for improper use of this information and for the final use of the product if it is not the normal application of the Geomembrane.

HDPE Geomembrane Alvatech Fix is supplied in colour black. Other colours can be manufactured. Ask for conditions.

PROPERTIES UNITGEOMEMBRANE ALVATECH FIX 1F – 2F

TEST METHOD HDPE 1.5 HDPE 2.0 HDPE 2.5

Density g/cm3 >0.940 >0.940 >0.940 UNE-EN ISO 1183 Melt Index (190ºC / 2.16 kg) (190ºC / 5 kg) g/10 min <1.0

<3.0 <1.0 <3.0

<1.0 <3.0 UNE-EN ISO 1133

Thickness mm 1.50 ±5%

2.00 ±5%

2.50 ±5 % UNE -EN 1849-2

Tensile PropertiesBreak Strength

•Structured side•Smooth side

Break Elongation•Structured side•Smooth side

Yield StrengthYield Elongation

MPa

%

MPa %

>13 >26

>400 >700 >16

10,5 (>8)

>13 >26

>400 >700 >16

10,5 (>8)

>13 >26

>400 >700 >16

10,5 (>8)

UNE-EN ISO 527-3, Test Type 5

Static Puncture Resistance KN >3,2 >4,2 >5,3 UNE-EN ISO 12236 Tear Resistance N/mm >135 >135 >135 UNE ISO 34-1Temperature Resistance - NO CRACKS UNE-EN 495-5 Linear Expansion Coefficient ºC-1 2∙10-4 2∙10-4 2∙10-4 ASTM D 696 Behaviour to Heat % <1,5 <1,5 <1,5 UNE-EN ISO 14632 Black CarbonCarbon Black ContentParticle SizeAsh ContentCarbon Black Dispersion

% nm % -

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

UNE 53375-2

ISO 18553

Oxidative Induction Time (O.I.T)Standard OIT (200ºC, O2, 1 atm) min >100 >100 >100 UNE-EN 728

Oven Ageing at 85ºC, Standard O.I.T.(200ºc, 02, 1 ATM)-% retained after 90 days % retained >55 >55 >55 UNE-EN 728

UV Resistance, Standard O.I.T. (200ºC, 02, 1 atm) % retained after 1600 hrs. % retained >55 >55 >55 UNE-EN 728

Stress cracking (SP-NCTL) h >300 >300 >300 UNE-EN 14576ASTMD 5397

Artificial AgeingReduction Break Elongation % <15 <15 <15 UNE-EN 12224

Oven AgeingReduction Break Elongation % <15 <15 <15 UNE-EN 14575

Water Absorption24 hours6 days

% %

<0.2<1

<0.2<1

<0.2<1 UNE-EN ISO 62

Root Resitance - No perforations No perforations No perforations CEN/TS 14416 Hydraulic Permeability (m3/m2)/d <2 x 10-6 <2 x 10-6 <2 x 10-6 UNE-EN 14150 Stagnation against gases (m3/m2)/(d.atm) <4 x 10-4 <4 x 10-4 <4 x 10-4 ASTM D 1434 Spikes Height mm > 0,8 mm > 0,8 mm > 0,8 mm ASTM D 7466

HDPE Geomembrane ALVATECH FIX is manufactured by SOTRAFA SA (Almería-Spain), a company of the Armando Alvarez Group.ALVATECH FIX is a High Density Polyethylene liner, structured on one (FIX 1F) or both sides (FIX 2F), available in 7,5m, and manufactured with the latest cast system technology.The product satisfactorily meets quality required by Standard GRI GM13 for Structured Geomembrane in 1,5mm and 2,0mm.This information is the result of our experience, it is only provided for reference purposes without contractual value and these values are subject to change without prior notice. SOTRAFA is not responsible for improper use of this information and for the final use of the product if it is not the normal application of the Geomembrane.

HDPE GEOMEMBRANE

ALVATECH® FIXThe HDPE Geomembrane Alvatech Fix is a high density polyethylene sheet, structured on one or two faces, with an important quantity of spikes (57.000 spikes/m2). The spike height is greater than 0,8 mm, giving a better friction coefficient for an inclined land with big slopes.

Our main difference is producing a 7,5 m width structured geomembrane which allow us to optimize the installation costs reducing the amount of welding on site.

It is mainly used in landfills and water reservoirs that have great slopes (greater than 30º) and also as a security element to facilitate the escape of people or animals that accidentally fall into the reservoir.

For more details, see the datasheet.

PROPERTIES UNITALVATECH LLDPE

Test MethodsLLDPE 1.0 LLDPE 1.5 LLDPE 2.0 LLDPE 2.5

Density g/cm3 0.940 - 0.920 0.940 - 0.920 0.940 - 0.920 0.940 - 0.920 UNE-EN ISO 1183

Melt Index(190ºC, 2.16 kg) (190ºC, 5 kg) g/10 min <1.2

<3.5 <1.2 <3.5

<1.2 <3.5

<1.2 <3.5 UNE-EN ISO 1133

Thickness mm 1.00 ±5%

1.50 ±5%

2.00 ±5%

2.50 ±5% UNE-EN 1849-2

Tensile Properties (*)Break Strength (1)

Break Elongation (1)MPa %

34 (>26) >750

34 (>26) >750

34 (>26) >750

34 (>26) >750

UNE-EN ISO 527-3,

Test Type 5

Static Puncture Resistance KN >2,0 >3,0 >4,0 >5,0 UNE-EN ISO 12236

Tear Resistence (1) N 120 (>100) 180 (>150) 240 (>200) 300 (>250) UNE ISO 34-1

Temperature Resistance (1) - NO CRACKS UNE-EN 495-5

Stability SizeChange measure % <1,5 <1,5 <1,5 <1,5 UNE-EN ISO 14632

Carbon BlackCarbon black contentParticle SizeAshes ContentBlack Carbon Dispersion

% nm % -

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

UNE 53375-2

ISO 18553

Oxidative Induction Time (O.I.T)Standard O.I.T. (200ºC, O2, 1 atm) min >100 >100 >100 >100 UNE-EN 728

Oven Aging at 85ºC, Standard O.I.T. (200ºC, 02, 1 atm) - % retained after 90 days. % retained >35 >35 >35 >35 UNE-EN 728

UV Resistance, Standard O.I.T. (200ºc, 02, 1 atm) - % retained after 1600 hrs. % retained >35 >35 >35 >35 UNE-EN 728

Stress Cracking (SP-NCTL) (2) h >300 >300 >300 >300 UNE-EN 14576ASTMD 5397

Artificial AgeingReduction Break Elongation (2) % <25 <25 <25 <25 UNE-EN 12224

Oven AgeingReduction Break Elongation (2) % <25 <25 <25 <25 UNE-EN 14575

Water absorption24 hours6 days

% %

<0.2 <1

<0.2 <1

<0.2 <1

<0.2 <1 UNE-EN ISO 62

Root Resistance - No perforations No perforations No perforations No perforations CEN/TS 14416

(1) Both Directions (longitudinal and transversal) (2) Both sides.All the values are nominal. Those values between parentheses are the minimum values required by the norm, with a tolerance of ±5%ALVATECH LLDPE is manufactured by SOTRAFA SA (Almería – Spain), a company of the Armando Álvarez Group.ALVATECH LLDPE is a Lineal Low Density Polyethylene liner, smooth by both sides, available in 7,5 m and manufactured with the latest cast system technology.This information is the result of our experience, it is only provided for reference purposes without contractual value and these values are subject to change without prior notice. Sotrafa is not responsible for improper use of this information.

LLDPE GEOMEMBRANE

ALVATECH® LLDPEThe LLDPE Geomembrane (Alvatech LLDPE), is a waterproofing sheet, manufactured with a specific formulation based on Linear Polyethylene that provides high flexibility and welding properties. It is used in landfill sealing, floating covers etc in general, and works that require a waterproofing barrier with greater stability than HDPE.

For more details of composition, Mechanical properties and product durability, see the datasheet attached.

The LLDPE Geomembrane is supplied in black colour. Other colours can be manufactured. Ask for conditions.

The VLDPE Geomembrane (Alvatech VLDPE), is a waterproofing sheet, manufactured with a formulation based on Very Low Density Polyethylene, emphasizing its excellent welding properties and high flexibility. The sheet is even more flexible than the LLDPE.

It is applied in very irregular surfaces, improving its adaptation. It is worth mentioning landfill sealing, underground works, ornamental ponds, roof gardening and reservoir perimeter curbs for instance.

For more details of composition, Mechanical properties and product durability, see the datasheet attached.

The VLDPE Geomembrane is supplied in black colour. Other colours can be manufactured. Ask for conditions.

VLDPE GEOMEMBRANE

ALVATECH® VLDPE

PROPERTIES UNITALVATECH VLDPE

Test MethodsVLDPE 1,0 mm VLDPE 1,5 mm

Density g/cm3 <0.92 <0.92 UNE-EN ISO 1183

Melt Index (190ºC, 2.16 kg) g/10 min <1.3 <1.3 UNE-EN ISO 1133

Thickness mm 1.00 ±5%

1.50 ±5 % UNE-EN 1849-2

Tensile Properties (*)Break Strength (1)

Break Elongation (1)MPa %

30 (>20) >700

30 (>20) >700

UNE-EN ISO 527-3Test Type 5

Static Puncture Resistance KN 2,0 3,0 UNE-EN ISO 12236

Tear Resistance (1) N/mm 100 (> 75) 100 (>75) UNE ISO 34-1

Temperature Resistance (1) - NO CRACKS NO CRACKS UNE-EN 495-5

Behaviour to heat (1) % <1,5 <1,5 UNE-EN 1107-2

Carbon BlackCarbon Black ContentParticle SizeAsh ContentBlack Carbon Dispersion

% nm % -

2.50 (2.25± 0.25) <25 <0,1<3

2.50 (2.25± 0.25) <25 <0,1<3

UNE 53375-2

ISO 18553

Oxydative Induction Time (O.I.T.) (200ºC, O2, 1 atm) min >100 >100 UNE-EN 728

Oven Ageing at 85ºC, Standard O.I.T. (200ºC, O2, 1 atm) - % retained after 90 days % retained >25 >25 UNE-EN 728

UV Resistance, Standard O.I.T. (200ºC, O2, 1 atm) % retained after 1600 hrs. % retained >25 >25 UNE-EN 728

Stress Cracking (SP-NCTL) (2) h >300 >300 UNE-EN 14576ASTMD 5397

Artificial AgeingReduction Break Elongation (2) % <25 <25 UNE-EN 12224

Oven AgeingReduction Break Elongation (2) % <25 <25 UNE-EN 14575

Water Absorption24 hours6 days

% %

<0.2 <1

<0.2 <1 UNE-EN ISO 62

Root Resistance - No perforations No perforations CEN/TS 14416

Hydraulic Permeability (m3/m2)/d <1 x 10-6 <1 x 10-6 UNE-EN 14150

(1) Both Directions (longitudinal and transversal). (2) Both sides.All the values are nominal. Those values between parentheses are the minimum values required by the norm, with a tolerance ±5%ALVATECH VLDPE Geomembrane is manufactured by SOTRAFA SA (Almería, Spain), a company of the Armando Alvarez Group.ALVATECH VLDPE is a Very Low Density Polyethylene Liner, providing a high flexibility and weldability, with excellent mechanical properties. Available in 7,5m width, it is manufactured with the last cast system technology, and to a specific formulation which improves the welding performance.This information is the result of our experience, it is only provided for reference purposes without contractual value and these values are subject to change without prior notice. Sotrafa is not responsible for improper use of this information.

Waterproofing with polyethylene geomembranes has some advantages in respect of other kinds of waterproofing such as:

•High Chemical resistance: probably the polymer with the highest resistance to acids attack, alkalis, organic solvents and inorganic.

•High Mechanical resistance in a wide range of temperature. • Durability: many studies show that life expectancy of geomembranes is over 100

years, even exposed to weather conditions. • Possibility of checking the tightness of the welds.• The use of large sheet widths reduces the number of welds on site.• Flexibility and versatility in a wide range of applications. • Competitive prices of product and installation.

APPLICATIONS

ReservoirsIrrigation projects in agriculture, golf courses, snow reservoirs for producing artificial snow, power plants, and other industrial applications.

MiningLeaching of minerals, for metallic (Au, Ag, Cu,…) and non metallic mining (I, Li,…) and used to contain  acids used in mineral leaching which can otherwise produce soil contamination.

Fish Farms

ChannelsIrrigation in agriculture projects, water transfers…

LandfillsMunicipal urban waste, manure from livestock farms, industrial tanks.

Underground Works• Tunnels• Foundations waterproofing, to avoid

dampness and as a barrier against radon gas.

Environmental Works

Floating CoversIn order to reduce reservoir’s evaporation and deodorize waste ponds that emit toxic gases.

APPLICATIONS

• Land decontamination• Evaporation ponds• Sewage plants

• Second containment barriers for oil and gas projects.• Leaching pads• Seaports dredging.

HDPE PROFILE TYPE “E” is a joining element between the geomembrane and a concrete work, which ensures a complete sealing of the work. The profile is grooved on the inside and the design of its three anchors has a full adhesion to the concrete. The HDPE Geomembrane must be welded by extrusion system just into the centre of profile. It is available in 2,5 meters bars.

The profile Type “E” is made of high density polyethylene. It is used to fix the waterproof barrier (HDPE Geomembrane) into a vertical or horizontal surface of concrete (walls or floors), getting a completely waterproofing joint.

It installs embedded in fresh concrete, leaving the welding surface exposed upon completion of concrete. The profile is grooved on the inside and the design of its three anchors has a full adhesion to the concrete. The HDPE Geomembrane must be welded by extrusion system just into the centre of profile.

HDPE Welding wire, 4mm section, used for joining the liner by extrusion.

HDPE Pellets, for joining geomembranes to each other or to other elements on site using an extruder for supply of molten material.

COMPLEMENTARY PRODUCTS

Paraje Cartabona, 12. Aptdo. Correos 7304710 Sta. Mª del Águila EL EJIDO (Almería) EspañaTfno.: +34 950 40 56 00 - Fax: +34 950 58 02 33

www.sotrafa.cominfo@sotrafa.com - geo@sotrafa.com

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MEMBER OF INTERNATIONALGEOSYNTHET ICS SOCIETY0099/CPD/A86/0015