Accounting Method
Quantitative comparison between the total weight of raw flax entering a mill and the weight of finished goods and waste produced. The mill level mass balance accounts for every kilogram of material to ensure that no fibre is lost or unaccounted for during the transformation from straw to yarn. It provides a clear picture of the efficiency of the mechanical processes and the effectiveness of the waste recovery systems.
Flow Tracking
Calculation of the balance involves weighing the incoming flax bales and subtracting the moisture content to find the dry mass. As the material passes through scutching and hackling, the mill records the weight of the primary product and the various by-products like tow and shives. The mill level mass balance must also account for the loss of non-cellulosic materials during scouring and bleaching.
Any measurable discrepancy between the total input and the sum of the outputs suggests errors in weighing or theft of material. Consistent tracking allows the mill to identify which stages are producing the most waste.
Sustainability Reporting
Modern certification standards for sustainable textiles require the maintenance of an accurate mass balance. This documentation proves that the volume of certified linen sold does not exceed the volume of certified raw material purchased. The mill level mass balance supports claims of recycled content by verifying the flow of waste back into the production line.
Accurate records prevent the loss of high-value material through mismanagement or poor labeling. Auditors regularly review these balances to confirm the mill’s compliance with global textile standards.
