Optimizing Relay Nozzle Dynamics for High Hairiness Bast Fiber Shedding in Air Jet Looms
Optimizing relay nozzle pressure vectors, timing overlap, and reed profile clearance eliminates hairiness-induced stops in high-speed bast air-jet weaving.
Profile Reed Tunnel
Shed Aperture
An adjustment gap controls how yarns pass through the loom harness to prevent fibre breakage during high-speed mechanical operation. This profile reed tunnel facilitates the clearance of twisted bundles by maintaining a strict spacing between the dents. The measurement defines the horizontal span available for the warp during the beating motion.
Operators set this clearance based on the density of the linen yarn and the expected tension of the fabric production cycle.
Calibration Metric
Technicians check the physical integrity of this spacing whenever a loom restarts after a long stoppage. A gauge fits into the aperture to confirm the width remains within the tolerances specified by the mill technical manual. Deviations in the gap lead to uneven tension which causes streaks in the finished cloth surface.
The verification process occurs before the first meter of fabric enters the take-up roll.
Operational Consequence
Consistent alignment within the channel prevents the accumulation of lint around the metal reeds. Mills rely on this precise separation to ensure that heavy yarns do not snap during the rapid shifting of the shed. A restricted passage increases friction on the individual fibres and creates microscopic loops in the final weave structure.
Frequent monitoring of this geometry allows for the predictable output of textile batches over long periods of industrial manufacturing.