Difference between PP, HDPE, LDPE and LLDPE, Polypropylene (PP), High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), and Linear Low-Density Polyethylene (LLDPE) are among the most widely used thermoplastic polymers in the world. Each material has unique chemical structures, mechanical properties, and processing characteristics that make it suitable for specific industrial...