Vortex Control
Aerodynamic variable in air-jet spinning governs the velocity of the vortex that wraps sheath fibers around the yarn core. Spinners adjust the mvs spinning nozzle pressure to balance the hairiness, strength, and hand of the resulting vortex yarn. Higher pressure increases the rotational speed of the air vortex, creating a more tightly wrapped yarn with low hairiness and high abrasion resistance.
This setting is critical for controlling the yarn structure and ensuring smooth downstream processing on high-speed knitting machines.
Quality Impact
If the mvs spinning nozzle pressure is too low, the sheath fibers are not wrapped securely around the core. This loose wrapping increases yarn hairiness and reduces yarn strength, which leads to pilling and fabric defects. This fault is particularly visible in fine-gauge knitted fabrics.
Energy Consumption
Air consumption is a major operating cost in vortex spinning mills. High mvs spinning nozzle pressure increases compressed air demand and drives up energy costs. Spinners must find the minimum effective pressure that still meets the required quality specifications.
Production Profile
Different fiber blends require specific pressure adjustments for optimal results. For example, 100% viscose runs at lower pressures than polyester-cotton blends due to differences in fiber stiffness. These adjustments are saved in machine profiles to ensure quick setups for new production runs.
