AGRU America PRO_LiningSystems_2017-1 - Page 5

Very Low-Density PE (VLDPE) The PE product line is complemented by the AGRUFLEX VLDPE geomembranes, which combine the advantages of a HDPE geomembrane with a high degree of flexibility. Due to its excellent chemical, physical, and biological properties, this product is suitable for many applications including tunnel and pond construction. High-Temperature-Resistant PE (HTRPE) The maximum continuous operating temperature of HDPE geomembranes has been limited to a temperature of 140°F (60°C) until now. At higher temperatures, thermo-oxidative degradation occurs, resulting in a relatively short service life. AGRU has many years of experience in piping for hot water and has now incorporated this knowledge into the development of the HTRPE membrane, which is able to cope with continuous operating temperatures of up to 212°F (100°C) and has excellent long-term stability. Flexible Polypropylene (FPP) FPP is the latest polyolefin material and was only introduced at the end of the last millennium. Because FPP does not need to be manufactured with plasticizers, it is completely homogenous with very low crystallinity, high strength, and maximum flexibility. In addition, FPP has a lower coefficient of thermal expansion than PE-based materials. Thanks to these properties, AGRUFLEX FPP membranes adapt to the substrate perfectly and are therefore ideally suited to pond construction. 5