Resolving Edge Tension Drift and Temple Mark Variations on Wide Air-Jet Linen Weaving Warps
Wide air-jet linen weaving requires synchronized relay nozzle pressures and precise temple pin geometry to stop edge tension drift and edge damage.
Relay Nozzle Timing
Air Pulse Sequence
Sequential valve triggering energizes auxiliary air jets along the profile reed channel to maintain yarn velocity across the weaving shed. In air-jet weaving of linen fabrics, relay nozzle timing dictates the precise microsecond intervals when each bank of secondary nozzles fires compressed air. Matching the air wave speed to the traveling speed of stiff flax yarn prevents tip deceleration and shed obstruction.
Modern loom controllers allow precise adjustment of valve opening and closing angles relative to loom rotation degrees.
Valve Synchronization
Pneumatic solenoid valves respond to electronic signals generated by the main loom shaft encoder. Optimizing relay nozzle timing reduces overall compressed air consumption while preventing yarn slack during transport. Incorrect timing causes the filling yarn to lose velocity, leading to wavy pick defects or automatic loom stops.
Weaving technicians calibrate valve timing curves whenever switching yarn counts or fiber blends.
Filling Stability
Stable air propulsion ensures clean insertion across wide weaving widths without untwisting low-twist linen yarns. Quality monitoring logs confirm that proper relay nozzle timing reduces thread breakage and yarn filamentation. Factory energy audits highlight valve timing optimization as an effective method for reducing compressed air power costs.
Smooth insertion yields uniform selvedges and pristine cloth surfaces.