Sorona® bi-component stretch yarn
Sorona® bi-component yarn is a multicomponent yarn in which two different polymers are joined together within each filament. When exposed to heat, each polymer shrinks to a different degree, producing a smooth and regular helical crimp. And because the crimp is inherent in the yarn and not mechanically induced, the stretch and recovery properties are significantly more durable.
helical crimp
Stretch
Characteristics:
• PTT + PET (side by side)
• Made of Dupont™ Sorona® bio-based chip
• Comfortable elasticity & excellent recovery.
• Soft touch feel.
• Stay cool and dry with moisture-wicking benefits
Ecology Point of View:
Spandex is the key to the excellence of many technical fabrics. But the downside of spandex fiber is that this elasticity proves very problematic during mechanical recycling. Fabric containing Sorona® bi-component yarn won’t impede the shredding and fiber-stripping process in the mechanical recycling industry.
Crimp Development:
To develops its crimp at its first exposure to wet or dry heat
• Minimal tension upon the fabric
• Wet heat at 60 – 130°C (140 – 266°F), or Dry heat at 160 – 170°C (320 – 338 °F)
• Experiment for best results
Dyeing:
This yarn is disperse dyeable to deep shades at temperatures up to 130°C (266°F), or may be dyed to lighter shades at 100°C (212°F). An after-scour is recommended for optimal wash fastness.