Calculating Greige Fabric Yield from Loom Speed and Sett
Calculate linear greige yield by dividing net picks per hour by pick density, adjusting reed width and warp length for crimp contraction.
Shedding Stop Motion
Mechanical Action
Automatic loom stoppage occurs when warp yarns break on the high speed shedding stop motion during flax cloth production in coastal Jiangsu mills. Electric current passes through drop wires suspended on individual warp ends, and an immediate circuit closure trips the electromagnetic relay on the main drive shaft. Operators inspect the tensioned lines on the grey fabric while the mechanical brake engages within three rotation cycles.
Jiangsu spinning facilities record these stoppage frequencies in the daily loom efficiency log to distinguish between raw flax yarn preparation flaws and standard operational wear.
Yarn Parameter
Tensile strength variations on the wet spun flax determine whether warp breakage triggers the stopping mechanism during high humidity weaving shifts. Low grade short fiber counts create excessive lint accumulation around the heddle eyes, and this buildup causes premature electrical contact without actual yarn failure. Export grade linen specifications demand strict limits on hairiness indices to prevent false activations on the loom monitoring board.
Buyers evaluate the batch certificate against laboratory tensile tests before accepting the finished fabric rolls for international distribution.
Threshold Calibration
Sensitivity settings on the electrical drop wire assembly govern the acceptable tension limits for fine count linen warps during the sizing stage. Technicians adjust the magnetic field strength inside the relay housing according to the specific linear density of the yarn passing through the reed. Higher speeds require heavier drop wires to maintain stable contact pressure during rapid shed reversals.
Calibration protocols remain distinct from final fabric defect grading sheets because machine parameters address operational reliability rather than aesthetic compliance.