Standard Regain Calculation Procedures for Scutched Flax Fibre
Standard regain for scutched flax fibre is 12.00 percent, used to convert lab oven-dry mass into binding commercial invoice mass under ISO 6741.
Forced Ventilation Drying
Moisture Regulation
Active air displacement reduces the water content of natural fibres by forcing high velocity streams through dense stacks of raw material. Forced ventilation drying prevents microbial degradation and spontaneous heating in stored flax bales. This method accelerates water removal beyond the limits of passive ambient evaporation.
Industrial dryers utilize centrifugal fans to push dry air across the surface area of the fibre, which carries away liberated vapour before equilibrium humidity is reached. Proper management of airflow velocity ensures consistent outcome across large volumes of flax straw.
Thermal Calibration
Process parameters rely on controlled temperature gradients to avoid physical damage to the cellulose structure of the fibre. Heat applied during forced ventilation drying must remain below forty degrees Celsius to maintain natural wax integrity and spinning potential. Excessive heat leads to brittle fibres that suffer breakage during subsequent mechanical decortication.
Technicians monitor the discharge temperature to adjust air intake rates based on incoming moisture levels of the flax harvest.
Procurement Compliance
Quality control protocols record the final humidity percentage in the technical inspection document provided to the buyer. Achieving a target moisture range between ten and twelve percent determines the acceptance of the fibre lot according to standard commercial agreements. Fabric mills reject shipments that exceed these parameters because residual moisture creates uneven tension during the drafting of slivers.
Precise water removal remains the basis for accurate weight billing in international linen trade.