Quantifying Anti Friction Lubricant Protection Limits for Elastane Cores under High Drag Jet Processing
Sustaining a 1.8 percent ester lubricant film on elastane cores prevents elastomeric rupture when jet nozzle pressure exceeds 2.2 bar.
Surfactant Stripping
Chemical Removal
Extraction of surface-active agents from dyed or printed fabrics during post-treatment washing processes constitutes a critical purification step in textile finishing. Effective surfactant stripping ensures that residual processing auxiliaries do not interfere with subsequent water-repellent or flame-retardant finishes. This process typically involves high temperature water washes and rinsing agents.
Finishing Quality
Many functional finishes require a clean fiber surface to adhere properly and function effectively. If surfactant stripping is incomplete, the remaining surfactant molecules can act as re-wetting agents, destroying the performance of waterproof coatings. This issue is a common cause of test failures in water-repellent sportswear.
Dye Fastness
Residual detergents and emulsifiers left on the fabric can mobilize dye molecules, reducing color fastness. Through thorough surfactant stripping, mills remove these unfixed dyes and chemicals, ensuring that the garment does not bleed during consumer washing. This step is necessary for bright or dark shades.
Process Verification
Laboratory technicians verify the completeness of the wash process by measuring the surface tension of the rinse water. A low surface tension indicates that surfactants are still bleeding out of the fabric, requiring additional wash cycles. Once the surfactant stripping is successful, the rinse water tension returns to that of pure water.