Profiled Reed and Air Duct Design
topic
Air-jet loom profiled reeds incorporate a curved channel or groove along the rear face that forms an enclosed duct confining the air jet and weft yarn during insertion, with reed profile geometry including channel depth, width, and curvature determining how effectively the air flow is concentrated around the weft yarn, and relay nozzle entry ports allowing sub-nozzle air jets to enter the channel at defined intervals across the machine width.
Role
Provides the aerodynamic channel that concentrates relay nozzle air flow around the weft yarn during transport across the fabric width, with profiled reed design being the critical enabling element of high-speed air-jet insertion that allows relay nozzle air pressure to maintain sufficient weft yarn velocity across wide machine widths that plain reed configurations cannot achieve without excessive air consumption.