Reconciling Wet Processed Linen Weight Loss against Commercial Loom Hour Billing Allowances
Reconciling wet processed linen weight loss against loom hour billing requires adjusting greige pick counts for chemical extraction and structural shrinkage.
Cellulase Biopolishing Loss
Mass Reduction
Chemical finishing processes frequently result in a measurable decrease in fabric weight through the enzymatic removal of surface fibrils. This cellulase biopolishing loss occurs when cellulase enzymes hydrolyze the protruding microfibrils on flax yarns to create a smoother surface finish. The action of these enzymes degrades the amorphous regions of the cellulose, which improves the drape and hand of the finished linen but inevitably lowers the total weight of the batch.
This reaction is terminated by raising the bath temperature or adjusting the pH to deactivate the enzyme once the target smooth surface is achieved.
Process Consequence
Industrial finishers must calculate this weight differential to adjust their yield estimates before the fabric is cleared for final packaging. When the cellulase biopolishing loss exceeds the tolerated range, the fabric experiences a decline in tensile strength that can lead to structural failure during subsequent apparel manufacturing. To manage this trade-off, technicians monitor the treatment duration and the concentration of the liquid enzyme.
Degradation Limit
The acceptable boundary for this weight change during enzyme treatment usually ranges between three and five percent of the dry weight of the linen material. Beyond this limit, the enzymatic action penetrates the secondary cell wall of the flax fibre and begins to destroy the crystalline core. This destruction results in irreparable damage to the structural integrity of the yarn.