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Polyethylene (PE) is categorized broadly into several densities, significantly affecting its physical properties and applications. The primary types are Low-Density
Polyethylene (LDPE), Linear Low-Density Polyethylene (LLDPE), and High-Density Polyethylene (HDPE).
LDPE, with a density range of 0.910-0.925 g/cm³, is known for its flexibility and is commonly used in film applications, such as plastic bags and wrapping films.
LLDPE, similar in density to LDPE, offers better puncture and tear resistance and is used in stretch films and flexible tubing. HDPE, with a density range of 0.941-0.965 g/cm³, is characterized by its strength and rigidity, making it ideal for products like milk jugs, detergent bottles, and piping. Each type of polyethylene serves specific industrial and consumer needs based on its density, demonstrating the material's versatility.