What are the temperatures for material that can be contained by Poly-Flex liners?
Poly-Flex geomembranes are thermoplastic materials, hence their physical properties are temperature dependent. The material becomes softer and more flexible at higher temperatures and stiffer and stronger at lower temperatures. We specify maximum use temperatures of 160° F for HDPE and 140° F for LLDPE liners. • What is the cold temperature resistance of Poly-Flex liners? Poly-Flex liners pass the low temperature brittleness test at -70° C (-94° F) according to the ASTM D 746. • Why do Poly-Flex liners have wrinkles? Polyethylene liners expand and contract as the sheet temperature changes. This thermal expansion/contraction will cause the liner to grow or shrink with variance in temperature. • Are Poly-Flex liners available in any other colors than black? Yes. Poly-Flex liners are available in white/black. A white, or reflective liner reduces heat buildup and minimizes wrinkling. For other colors contact Poly Flex, Inc. • Are Poly-Flex liners immune to root penetration? Poly-Flex liner
