Jacquard Repeat Length Priced as Card Time and Loom Hours
Pricing Jacquard repeat length requires balancing flat card preparation fees against loom hour rate increases caused by harness mass speed penalties.
Harness Tie Geometry
Spatial Arrangement
Harness tie geometry designates the precise physical layout of cords connecting the jacquard mechanism to the warp ends during the weaving of patterned linen fabric. This structural configuration dictates the lifting path of individual flax yarns within the loom harness, directly determining the fidelity of damask designs and figured textiles produced on the workshop floor. Inspectors evaluate the alignment during pre-production setup, recording deviations in the loom calibration ledger before any warp tension is applied.
The specification separates factory internal tolerances from the buyer-mandated jacquard density thresholds, establishing the exact boundary where mechanical adjustment ends and yarn distortion begins.
Node Tensioning
Cords stretching across the harness frame undergo continuous displacement friction throughout extended operational runs on traditional upright looms. Workshop technicians measure this mechanical resistance against established baseline charts, identifying micro-slips that alter the shed opening angle during high-speed shedding cycles. Tension variance causes uneven warp lift across the reed, creating surface puckering in the finished cloth that fails export inspection.
When humidity shifts inside the spinning mill, plant fibers absorb moisture and elongate, requiring immediate recalibration of the lower board matrix to preserve uniform draft angles.
Draft Angle
Final acceptance depends entirely on the geometric correspondence between the punched card instructions and the actual vertical lift registered at the heddle eye. Mill auditors verify this alignment by comparing random sample pulls against master template overlays maintained in the central quality archive. Fabric grades drop instantly whenever clearance tolerances drift beyond strict millimeter limits, separating premium export material from secondary domestic stock.
Proper calibration of the hanging apparatus prevents pattern distortion across wide linen widths without relying on post-weave finishing corrections.