Abstract: As the most widely used synthetic fiber in the world, the efficient recycling and reuse of polyester (PET) waste is crucial for reducing resource waste and environmental pollution. The paper focuses on regenerated polyester fiber produced through chemical recycling methods and systematically examines the spinning performance and practical application of this fiber by investigating the production practices of regenerated polyester staple /medium-length polyester/ TencelTM Lyocell/NaiaTM (35/25/20/20) 18.5 tex blended yarn.

Key words: chemical recycling; regenerated polyester; blending; indexes