What is HDPE?

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. It is sometimes called "alkathene" or "polythene" when used for pipes. 

It is a high degree of crystallinity, non-polar thermoplastic resin, is a non-toxic, odorless, odorless white particles. Density of 0.940 ~ 0.976 g / cm3 range; crystallinity of 80% to 90%, softening point of 125 ~ 135 ℃, the use of temperature up to 100 ℃; melting temperature of 120 ~ 160 ℃. With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes, and plastic lumber. 

HDPE is commonly recycled, and has the number "2" as its resin identification code. HDPE full name is High density polyethylene.