Enzymatic Purification
Chemical preparation of raw flax yarns or fabrics requires the removal of natural pectins, waxes, and hemicellulose before dyeing and finishing can occur. The bio scouring process utilizes specific enzymes such as pectinase to degrade these impurities without damaging the cellulose structure of the flax fiber. This biochemical treatment operates under milder temperature and pH conditions than traditional alkaline scouring with sodium hydroxide.
The enzymatic action selectively breaks down the intercellular cement holding the non-cellulosic materials to the fiber surface.
Fibre Strength
Traditional alkaline scouring can weaken flax fibers and lead to a harsh fabric hand that requires extensive softening treatments. Because bio scouring preserves the integrity of the cellulose polymers, the treated yarn retains greater tensile strength and has a softer feel. Mill test records measure the weight loss and absorbency of the fabric after treatment to ensure that the process meets quality specifications.
The resulting textile is highly absorbent and ready for bleaching or dyeing.
Environmental Impact
Reducing the chemical load in wastewater is a primary goal for modern textile finishing operations. Enzymatic treatment decreases the biological oxygen demand of the effluent compared to conventional chemical methods. It also reduces water consumption since fewer rinsing cycles are required to neutralize the fabric.
