Introduction to polyester chips

    Polyester chips usually refer to the polyester raw materials obtained by polymerization, which are generally processed into flake particles of about 4*5*2 mm. [1] The process routes of polyester production include direct esterification method (PTA method) and transesterification method (DMT method). The PTA method has the advantages of low raw material consumption and short reaction time, and has become the main process and preferred technical route of polyester since the 1980s. The large-scale production line is a continuous production process, while the semi-continuous and batch production process is suitable for various small and medium-sized production devices. The uses of polyester now include fibers, various containers, packaging materials, films, films, engineering plastics and other fields.