Abstract:

To get the effect of different negative pressures and friction factor of lattice apron at the outer surface on fiber compact in condensing zone of compact spinning with lattice apron, computational fluid dynamic model was established, and flowing state of airflow were characterized in convergence zone. Previded that other conditions were fixed, the trajectories of fibers at the counterpart positions were different and when negative pressures were the same but friction factors were different with the lattice apron at the outer surface. The results show that both the negative pressure and friction factor of lattice apron at the outer surface have great impact on the compact effect. Increasing these two values from the lower ends, the campact quality is improved. However, after reaching the optimal compact effect, further increasing the two values would lead to the opposite result.