Air-Jet Spinning Variants and Technologies

Commercial systems: Murata Vortex Spinning (MVS, 70-80% of air-jet market, Japan, single-nozzle design with tangential air jets creating vortex, delivery 300-450 m/min), Rieter Air-Jet (J20, dual-feed system enabling fancy yarn effects, Swiss technology), and historical systems (DuPont/WRONZ Fastor—early 1980s prototype, limited success; Dref-friction—combined friction-air technology for coarse counts). Modified air-jet concepts: dual-nozzle systems (creating more complex wrapper patterns, improved strength—development stage), integrated compact-air-jet (combining compact condensing with air-jet for ultra-low hairiness—research), and variable wrapper intensity (adjustable air pressure during spinning creating designed aesthetic effects in yarn structure).