Raw Material Shrinkage
Contractual yield adjustments in flax processing account for mass loss occurring when raw scutched fiber is processed into hackled long staple and comb tow. Calculating the hackling yield deduction enables fiber buyers to adjust payment schedules based on net usable fiber recovered after mechanical pin dressing. High shive content and fiber entanglements reduce long-staple recovery, increasing the yield deduction applied against supplier invoices.
Commercial Recovery Calculations
During industrial hackling, raw scutched flax passes through continuous vertical comb bars that strip away short, unaligned fibers and residual woody shives. The mass of recovered hackled dressed line is weighed against the initial input mass of scutched fiber to determine net line yield percentage. If the line yield falls below contract baseline specifications, a financial hackling yield deduction is applied to offset the economic loss of long-staple fiber.
Mill buyers inspect laboratory hackling test results before releasing payment for large raw fiber shipments. High yield deductions reflect poor retting quality or mechanical damage during scutching. Standard commercial contracts define precise formula tables for converting yield loss into financial credit.
Transparent yield deductions maintain fair trading standards between growers and mills.
Supplier Evaluation
Persistent high yield deductions signal quality deficiencies in specific flax growing regions or scutching plants. Purchasing departments adjust supplier quality ratings based on historical yield data.
