PVA Binder

Application Parameters

Proper film formation requires exact control over temperature and humidity during the drying phase of the slashing process. Too little heat prevents the solution from adhering to the flax fibres, which leads to hairiness and eventual breakage under high tension. Excessive heat creates a brittle surface that flakes off before the yarn arrives at the loom.

Technical specifications recorded in the mill production log denote the concentration of the solids in the tank and the speed of the drying cylinders to ensure consistency across the warp beam.

Traceability Protocols

Standardised testing methods verify the purity of the coating material before it enters the preparation cycle to prevent contamination of the flax strands. Laboratory reports confirm the ash content and the degree of hydrolysis because variations here alter the removal rate during the subsequent finishing stages. Quality control officers cross-reference these findings against the original purchase invoice to maintain a clear line of sight from the chemical supplier to the woven product.

Chemical residues that survive the final washing stage constitute a failure of the desizing control protocol.