High-Density Polyethylene (HDPE)

Polyethylene, the most type of common plastic, is thermoplastic polymer with variable crystalline structure and an extremely large range of applications depending on the type. As of 2017 over 100 million tons of PE resin is produced and accounts for 34% of the total plastics market. PE is commonly categorized into 3 major categories of LDPE, LLDPE, and HDPE.

High-Density Polyethylene (HDPE)

High-Density Polyethylene (HDPE)  is a thermoplastic polymer produced from the monomer ethylene. With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, and geomembranes. A1 Plastics uses HDPE, LDPE, and LLDPE in manufacturing Geomembrane liner which is used for canal linings, landfills, hazardous landfills, agriculture pond lining, floating covers, mining leach pads, etc.

HDPE Specifications

Melt Temperature103 °C (266 °F)
Typical Injection Molding Temperature21 – 66 °C (70 – 150 °F)
Tensile Strength20 MPa (2900 PSI)
Flexural Strength21 MPa (3000 PSI)
Specific Gravity0.95
Shrink Rate1.7 – 2.9% (0.017 – 0.029 in/in)

*At standard State