Profiled Reed Design for Air-Jet Guiding
topic
Air-jet looms use specially profiled reeds with a U-shaped or C-shaped channel running along the lower portion of each dent that concentrates the air stream from nozzles in a narrow guide channel directing the yarn through the shed, with the channel profile depth and width determining the air containment efficiency that governs the minimum air pressure required for reliable insertion, and with standard versus narrow channel profiles being selected according to yarn count and insertion reliability requirements for each fabric specification.
Role
Provides the aerodynamic guidance that concentrates the insertion air stream along the yarn's flight path, with profiled reed design being a critical enabler of the high weaving speeds achievable by air-jet looms from the improved air efficiency compared to open shed insertion that would require prohibitively high air pressures for reliable wide-width insertion, with reed profile selection and maintenance being important factors in air consumption and insertion reliability management.