Our products combine strength and integrity in panels of varying thickness of flexible thermoplastic polymer materials. These panels are shipped to your job site, where placement and additional field welding (seaming) are performed.
Their resistance of weather, ultraviolet rays and chemicals make their use an extremely cost effective alternative in reservoir construction. They are also resistant to mold, mildew, fungus, and chemicals normally found in soil.
Unlike other products, our geomembranes do not contain plasticizers that could migrate and cause premature aging of the liner or contaminate drinking water. Because our products do not degrade from ultraviolet or other environmental factors, they do not need to be buried for protection.
High Density Polyethylene (HDPE), is the most widely used product for lining of solid waste sites, mines and water containment applications. It is preferred for sites requiring low permeability and exceptional chemical and ultraviolet resistance properties.
RPTANK Lining uses the high quality HDPE resins specifically chosen for the properties required of a durable lining system. The RPTANK liner shall all be spark-tested before delivery as a standard Quality Control practise.
HIGH DENSITY POLYETHYLENE SPECIFICATION SHEET (RPTL-HDS200)
1) Tensile strength at break
2) Tensile strength at yield
3) Elongation at break
4) Elongation at yield
* These specification are offered as a guide for consideration to assist engineers with their specification, we assume no liabilities in connection with the use of this information. The specifications on this data sheet are subject to change without prior notice.
EXTRUSION WELDING PROCESS
The extrusion welder provides heat and an extrudate of molten plastic (resin) made from the same raw material as the HDPE membrance. The hand held extrusion welding process which entails the formation of a molten plastic (resin) which deposited over the edge and pressed into the overlapped sheets to form a completely homogenous seam.
The area to be used for welding will then be ground to provide a roughened surface for the extrudate to better adhere to the surface. Proper care should be taken in order not to remove too much surface from the panel when grinding.