Soaking Duration
Wet processing laboratories quantify flume residence time as the active period flax stalks remain submerged inside continuous wash channels before reaching mechanical scutching drums. Operators adjust channel currents through variable speed paddles to govern pectin breakdown rates precisely across each production batch. Water temperature variations alter biological activity inside the troughs, forcing supervisory staff to shorten channel intervals whenever thermal thresholds rise above normal operating limits.
Laboratory technicians record these duration values on daily wet mill dockets alongside pH measurements and total dissolved solids counts.
Scutching Threshold
Production supervisors evaluate finished fibre grade specifications by checking whether previous flume residence time matches the target parameters noted inside the master mill protocol. Undersoaked flax bundles retain residual plant gums that bind woody core particles together, preventing clean separation during subsequent mechanical beating passes. Buyers reject raw material lots displaying excessive fibre brittleness caused by prolonged exposure to heated wash water inside the extraction troughs.
Mill acceptance standards differ from customer quality thresholds because internal processing guidelines tolerate minor moisture variance while purchasing contracts demand strict tensile strength minimums.
Mill Standard
Finished fabric grades depend heavily upon uniform strand preparation achieved during initial wet preparation stages rather than adjustments made during subsequent loom operations. Inspectors verify final linen density figures against historical batch records to confirm that previous wash intervals stayed within acceptable tolerance ranges. Regulatory compliance auditors examine mill logbooks to ensure wastewater discharge volumes correspond correctly with documented soaking durations and chemical oxygen demand limits.
Proper control of channel timing prevents irregular fibre swelling during spinning, ensuring consistent yarn diameter throughout the weaving shed.
