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Specification of spandex fiber used in the preparation of core-spun yarn (CSY).
| Properties | 40D/5F, Spandex yarn (Creora) | 70D/5F, Spandex yarn (Creora) |
|---|---|---|
| Denier, d/9000 m, (dtex) | 40.80 | 70.40 |
| Tenacity (g/d) | 1.38 | 1.13 |
| Elongation at break (%) | 454 | 594 |
| Oil pick-up (%) | 3.87 | 4.08 |
| Package relaxation (%) | 13.0 | 11.40 |
| Running modulus (g) | 11.3 | 12.40 |
