Polyethylene (PE) is a versatile thermoplastic polymer with a wide range of applications across various industries. It is produced through polymerization of ethylene molecules, resulting in a structure that can vary in density and properties. PE is known for its lightweight, durable, and flexible nature, making it suitable for packaging materials such as plastic bags, bottles, and containers. It is also used in construction for pipes, insulation, and geomembranes due to its resistance to moisture and chemicals. PE's electrical insulation properties make it valuable in cables and wires. Additionally, it finds use in agriculture for greenhouse films and mulching sheets. PE is categorized into several types based on density (LDPE, MDPE, HDPE) and molecular structure, each offering distinct advantages depending on the application's requirements.