Study on On the Cross-Sectional Shape Change of the Profiled Fiber along the Spinning Path in Melt Spinning

The cross-sectional shape of profiled fibers has made obvious influence on fibers physical properties. The fiber profiled factor is an index used to estimate the deformation degree of profiled fibers. Based on the equations of melt-spinning dynamics and deformation, a numerical simulation program for calculating the fiber profiled factor along the spinning path was developed. A numerical simulation for calculating the fiber profiled factor along the spinning path of trilobal fibers in the PET melt spinning was performed. The simulation result graph of the fiber profiled factor along the spinning path is close to the final average fiber profiled factor measured in the spinning experiment under the same condition.