https://www.futureyarn.com/What-are-the-characteristics-of-polyester-filament-yarns-compared-with-polyester.html https://www.futureyarn.com/textile-yarn-white-dyed-colors-high-tenacity-filament-polyester-twist-yarn.html Characteristics of polyester filament yarns polyester filament yarns The production of polyester filament yarns is carried out using a single spindle production method. A filament has dozens of single filaments. From spinning to deformation, it has to pass through dozens of friction points, which can easily produce filaments. In addition, polyester filament yarns are produced by multiple spindles and multiple machines. Due to factors such as equipment, technology, and operation, polyester filament yarns produced at different spindles will have certain differences in performance, and even the inner and outer layers of a bobbin will vary. There will be differences.