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.
Elastomeric Failure
Fiber Rupture
Structural breakdown of highly stretchable polyurethane filaments under prolonged stress or chemical exposure marks the limit of elasticity in modern stretch fabrics. When elastomeric failure occurs, the fabric loses its recovery power and exhibits permanent bagginess. This damage is often visible as broken, protruding yarn ends on the fabric surface.
Mechanical Degradation
High speed sewing and fabric processing subject elastic fibers to extreme mechanical forces. Repeated stretching beyond the elastic limit initiates micro-voids in the polymer matrix, which eventually leads to elastomeric failure during garment wear. This degradation reduces the holding power of shapewear and activewear.
Chemical Vulnerability
Chlorine bleach and heat treatments accelerate the decomposition of polyurethane fibers. The presence of these aggressive factors triggers chain scission, causing elastomeric failure in swimsuits and elastic waistbands. To mitigate this issue, fiber makers incorporate stabilizers into the elastomer melt.
Performance Evaluation
Fabric testing laboratories use cyclic fatigue testing to assess the durability of stretch garments. By repeatedly stretching the fabric to a fixed elongation, technicians can predict the onset of elastomeric failure in the finished product. A high rate of recovery loss over fifty cycles indicates a low-quality elastic component that will fail prematurely in consumer use.