X4zol™-J, a thermoplastic polyurethane (TPU), is a relatively new elastomeric monofilament that is manufactured differently from elastane, resulting in unique qualities that provide comfort above and beyond traditional stretch fibers. X4zol™-J is produced through a process of melt extrusion, which does not require the use of solvents. The melt extrusion process is cleaner; resulting in a finer and stronger monofilament than traditional spandex, exhibiting a superior stretch.
Spandex vs. X4zol™-J
Most spandex fibers exhibit a steeper stress/strain curve, illustrating low initial resistance to stretch, or elongation; and then a rapid increase in resistance to the point of full elongation, or breakage (see spandex weft curve in chart).
The stress/strain curve of the X4zol™-J fiber illustrates a softer, more consistent stretch up to the point of full elongation—tracing a J-shape that translates into comfortable compression for the wearer (see X4zol™-J weft curve in chart.)
Benefits of X4zol-J™ in Fabrics
- Thinner and lighter, yet stronger and more durable
- Comfortable compression
- Breathable and cooling touch
- Balanced compression for enhanced fit
- Balanced 360° compression for enhanced fit
- Engineered moisture movement throughout fabric