Fibre Grading
Flax supply enters the production floor through rigorous sorting protocols where specific parameters determine baseline value before mechanical processing begins. Workers evaluate long line stability and cellulose length on inspection tables to separate raw material into distinct tiers. Mill operators apply internal grading standards to verify moisture content and breaking load for every incoming lot.
These facility thresholds differ from buyer acceptance criteria, which impose stricter limits on residue percentages and breaking elongation for export-bound stock. Natural variability in growing regions produces heterogeneous batches requiring precise classification to prevent processing failures during subsequent wet spinning stages.
Yarn Tensioning
Spinning frames regulate draw ratios to transform prepared roving into continuous filament with controlled twist density. Mechanical draft zones apply specific pulling forces to align parallel fibrils before final twist insertion occurs. Mill quality control teams measure breaking tenacity and hairiness levels continuously during yarn formation runs.
Fabric grade requirements dictate tighter tolerances than general commercial specifications, ensuring high-end woven output withstands subsequent wet finishing treatments without filament rupture. Tension discrepancies alter linear mass density and create structural defects that persist through loom operations.
Cloth Verification
Final inspection platforms examine finished woven linen for density anomalies and surface imperfections before commercial release. Inspectors grade completed yardage against contractual defect schedules to establish final commercial value. Buyers enforce specific tear resistance limits and dimensional stability thresholds that must match pre-shipment documentation.
Fabric grading protocols assess warp and weft counts using standardized illumination boxes to detect broken picks and reed marks. Export clearance relies on these verified quality records to substantiate customs declarations and tax classifications for international shipments.
