Tenacity (g/DE'): 2.5 ± 0.5 (test method ASTM D 3822, ISO 5079)
Elongation (%): 80.0 ± 10 (test method ASTM D 3822, ISO 5079)
Number of crimp (number/inch): 12.0 ± 1.0 (test method JIS L 1074)
Degree of crimp (%): 25.0 ± 5.0 (test method KS K 0327)
Dry shrinkage (%): 7.0 ↓ (test method KS K 0327)
OPU (%): 0.950 ± 0.050 (test method KS K 0327)
Advantages
Higher rebound elasticity and similar resilience from compression compared to urethane foam
Superb lightness and breathability
Excellent recovery durability from repeated compression; elastic binder fiber with supporting fibers that keeps its tenacity, does not snap easily; resilience durability from compression is excellent due to its three-dimensional network structure
Fire retardance and safety from harmful gases: does not burn easily, does not emit fume and toxic gases, does not use organic solvent
Permanent product durability: urethane foam goes through yellowing and stiffening within one to two years due to isocyanides, direct sun rays, heat, gas and other factors; this system has stable properties, so yellowing, stiffening, or crumbling never occurs; it sustains permanent durability
Easy washing and recyclability
Optional antibacterial and deodorizing feature: can be assigned antibacterial feature in accordance with products' uses and customers' request
Cautions For Heat Treatment
Melting temperature (TM) is 5 to 10 °C higher than that of low melt binder (LM) which is generally used by nonwoven manufacturer
Dryer temperature for binding varies according to nonwoven manufacturer's facility type or volume of e-plex; therefore, thermal bonding should be conducted at the same temperature as TM for LM in the beginning
If binding does not seem strong enough, dryer temperature should be set 5 to 10 °C higher for heat treatment
Final temperature of heating process should be set in consideration with hand feel of nonwoven after thermal bonding
Fiber Types And Blending Notes
F is fiberfill solid 15 denier
HC is hollow conjugate 3 denier
When blending fiber, HC has a more soft touch and lightness than F/F; rebound elasticity is a little bit, but permanent compression is better than F/F