Linear Polyethylene (LLDPE, MDPE, and HDPE)The Linear Polyethylene Family is the most widely used group of plastics for rotational molding. These plastics are economical, tough, have wide chemical compatibility and are easily molded. Polyethylene is easily colored and a long-term UV protection package is standard.
Cross-linked Polyethylene (XLPE)XLPE is widely used for fuel and oil storage applications. It is durable, has excellent impact strength and is very resistant to stress cracks. Cross-linked Polyethylene can not be joined with plastic welding.
PolypropyleneThis polymer is an engineering plastic that is often selected due to its thermal properties. Polypropylene can handle continuous use temperatures up to 200 F. Polypropylene can be joined with thermoplastic welding.
Polyvinylidene Fluoride (PVDF)Kynar is specialty plastic that is used in high purity applications. It can handle temperatures up to 300 F. and is very resistant to most acids and bases. PVDF can be joined with thermoplastic welding.