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Smart roofling geomembrane impervious
Production Description
Polyethylene Liners are a range of environmental protection liners for sealing
applications.
These include HDPE (High Density Polyethylene) LDPE (Low Density Polyethylene)
and LLDPE (Linear Low Density Polyethylene). Available in a range of thicknesses
and surface textures.
Application
We have network of approved installers who can arrange on-site welding
and installation services for landfill, stormwater and effluent ponds.
Geomembranes are manufactured using high density polyethylene (HDPE). HDPEis produced in various thicknesses and with smooth or embossed
structured surfaces. The geomembranes provide a complete seal against even the most toxic substances. It is typically used in sealing applications for landfill base seals as well as caps, in environmental sealing applications for the protection of groundwater from contamination and in water conveyance structures, canals or ponds.
Features
• Versatile sealing applications possible
• Excellent chemical resistance due to selected raw materials
• Extreme high elongation during uni-axial and multiaxial deformation
• High stress cracking resistance
• Very high UV-resistance
• Direction independent shear stress transfer with structured surfaces
• High interface friction angles with embossed structured surfaces
• Slope dependent structured surfaces available for project specific designs
• Complete quality control from the resin to the final product
• High Melt Flow Index allows an excellent welding performance
• Smooth edges with removable plastic tape for clean welding surface and overlap lines
• ISO 9001: 2000 certified
Installation
HDPE is a very technical product to install properly .HDPE requires specialized welding equipment and certified welding technicians to be installed properly
The most common method of securing the liners on side slopes is by means of an anchor trench around the perimeter .A battern strip or an embed channel system is used to attach the liner to structures
Field Seaming
There is a great deal more field welding due to the lack of factory fabrication .Welding is done with hot wedges on long field seams , and extrusion welders are used on detail work and pipe boots
Seamed by fusion welding ,heat is applied directly to the Geomembrane panels by a motorized hot wedge welder .The panels are then routed through a series of rollers that fuse the material together .
Extrusion welding is generally confined to repairs on the liner material
Technical Parameters (GRI-GM13)
Properties |
Test method |
GM SH075 |
GM SH100 |
GM SH125 |
GM SH150 |
GM SH200 |
GM SH250 |
GM SH300 |
Thickness |
D5199 |
0.75mm |
1.00mm |
1.25mm |
1.50mm |
2.00mm |
2.50mm |
3.00mm |
Density |
D1505 |
0.940 |
0.940 |
0.940 |
0.940 |
0.940 |
0.940 |
0.940 |
|
Tensile properties 1. Yield strength 2. Breaks strength 3. Yield elongation 4. Break elongation |
D6693 Type IV |
11KN/m 20KN/m 12% 700% |
15KN/m 27KN/m 12% 700% |
18KN/m 33KN/m 12% 700% |
22KN/m 40KN/m 12% 700% |
29KN/m 53KN/m 12% 700% |
37KN/m 67KN/m 12% 700% |
44 KN/m 80 KN/m 12% 700%
|
Tear resistance |
D1004 |
93N |
152N |
156N |
187N |
249N |
311N |
374N |
Puncture resistance |
D4833 |
240N |
320N |
400N |
480N |
640N |
800N |
960N |
Stress crack resistance |
D5397(App.) |
300hr |
300hr |
300hr |
300hr |
300hr |
300hr |
300hr |
Carbon black content |
D1603 |
2.0% |
2.0% |
2.0% |
2.0% |
2.0% |
2.0% |
2.0% |
|
Oxidative induction time (OIT) |
D3895 |
100 min |
100min |
100min |
100 min |
100min |
100min |
100min |
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