Fiber Inspection Protocol
Longitudinal line formation during the wet spinning stage of flax yarn production constitutes warp streaks when parallel yarn segments display uneven dye uptake due to localized tension variance across the drafting zone. Mill technicians record these parallel density defects within daily batch audit sheets before bobbin transfer to the loom shed occurs. Bobbin tension calibration prevents the irregularity from propagating into the subsequent sizing operation.
Cloth Evaluation Standard
Visual assessment protocols govern finished linen inspection on the grading table where fabric density anomalies alter light reflection across the warp direction. Quality inspectors separate yarn faults originating in the spinning frame from loom setup errors by measuring stripe width and edge sharpness against approved merchant samples. Acceptance thresholds permit minor tonal variations within low tier decorative textiles while industrial grade exports face strict zero tolerance limits for linear patterning.
Export Certification Rule
Final shipping clearance documentation relies on standardized grading certificates issued after laboratory light box testing confirms fabric uniformity meets buyer purchase order specifications. Commercial settlement discounts apply whenever linear dyeing defects exceed agreed percentage ceilings stated in the contract between the textile mill and the foreign importer. Final payment disbursement depends entirely on compliance with these established grading parameters.