Produce Of Full Dull PET Filament

The full dull pet filament have emerged in recent year. Because of high TIO₂ percentage, property of the melt was changed. Requires of Technology and quality control are higher than semi-dull PET filament. Thesis introduce the method which manufactured full dull PET by injecting master chip, by discussing the parameter chosen and control in process. In the process, spinning temperature affect relatively producing smoothly of spinning and Draw-texture and dye property of final product; Master chip percentage and cycle of spinning pack affect spinning smoothly; The choice of untwist affect the feather of DTY very much. So thesis discuss several above parameter emphatically. At product's quality control, monitoring the rise and down of tension in process can control the whole process fiber's quality throughout On line tension apparatus; Thesis also discuss many factors which affect DTY's unwind property and methods that can promote the unwind property. Thesis also compare full dull PET filament with other PET filament by analyzing molecular super-construction and analyze the different between full dull PET and other PET's property.