What is the difference between LDPE, LLDPE, and HDPE?

Polyethylene, one of the world’s most widely used plastics, can be divided into several categories, each with different characteristics and densities. Below is a list of the categories of polyethylene (PE) used by Polykar: • LDPE (Low density polyethylene): Polyethylene with a density of 0.91 to 0.94, prepared at very high pressures, and used mainly for sheeting, films, and packaging materials. • LLDPE (Linear low density polyethylene): Linear polyethylene with a density of .92, used mainly for plastic bags, sheeting, stretch wrap, and tubing. • HDPE (High density polyethylene): Polyethylene with a density of 0.96 or more, produced at low pressure and used chiefly for containers and articles made by injection molding and certain types of bags.  more