ISO 22095 Mass Balance Allocation Models for Blended Linen Yarn Manufacturing
ISO 22095 mass balance allocation demands dry-mass baselines and process waste reconciliation to stop certified credit inflation in mixed flax spinning.
Carding Fly Loss
Fibre Discard
Industrial spinning waste represents the mass of short fibres and dust ejected from machinery during the mechanical opening of flax. In Chinese linen mills, carding fly loss denotes the specific percentage of raw material that escapes into the air or falls beneath the carding cylinders as waste. It acts as an operational efficiency marker that helps managers track processing losses in the early stages of yarn preparation.
Mills monitor this loss to evaluate both raw material quality and machine settings. When flax fibres are short and irregular, the loss increases.
Mechanical Cause
Cylinder speed and worker settings directly influence how much fibre is lost during the carding action. High rotational speeds release excessive short fibres, which generates higher carding fly loss when the flax fibres lack sufficient moisture. Proper humidification of the carding room keeps the fibres pliable.
When the atmosphere is dry, static electricity builds up and increases fibre shedding.
Production Impact
Mill margins depend heavily on keeping waste rates below the limits agreed with buyers. Excessive carding fly loss reduces the yield of spinnable silver, increasing the unit cost of the finished yarn. Spinners use these measurements to adjust their purchase pricing for raw flax scutched tow.
High waste rates often lead to the rejection of specific fibre batches.