What pre-treatment processes are required for recycled PET bottles before they are processed into recycled polyester staple fibers?
The pre-treatment process of recycled PET bottles is the core key before processing them into recycled polyester staple fibers, with the aim of removing impurities, pollutants, and non PET components from the bottle body to ensure the quality of the recycled fibers. The entire preprocessing process is interrelated and can be divided into four stages: pre-processing, sorting and purification, crushing and cleaning, and drying and crystallization. The specific steps are as follows:

2026-01-13