HDPE

Polyethylene (PE) is a commonly used plastic material that consists of a long chain of carbon atoms with two hydrogen atoms attached to each carbon atom. As of 2017, over 100 million tons of PE resins are produced annually, accounting for 34% of the total plastics market. Many kinds of PE are known, with most having the chemical formula (C2H4)n. PE is usually a mixture of similar polymers of ethylene with various values of n. Polyethylenes are classified mainly into three types, which include: low-density PE (LDPE) with density ranging between 0.910 and 0.940 g/cm3, linear low-density PE (LLDPE) with density ranging between 0.910 and 0.920 g/cm3, and high-density PE (HDPE) with density ranging between 0.941 and 0.967 g/cm3. The sources of these materials may cause a slight shift or variance in the density.

HDPE is high-density polyethylene. It has good strength and resistance against impact, sunlight, chemicals, etc. This material is widely used in the production of pipes, bottles, etc