Polyethylene is an economical plastic that provides chemical resistance and low temperature toughness. Plastic resins are not any one material, but a family of related materials with various properties that can be formed to meet the requirements for the bottles, containers, closures, and caps and is used as a means of packaging for various products.
The most frequently used grades are High-density polyethylene, Low-density polyethylene, and Medium-density polyethylene.
Other forms include: