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Specification
| Parameter | Typical Range | Notes |
| Polymer Base | PET, PA6, PA66, PBT, rPET | GRS rPET available |
| Denier Range | 20D – 1200D | Fine: 20D–75D; Standard: 100D–300D; Heavy: 300D+ |
| Filament Count | 12f – 576f | Higher counts = softer, more even surface |
| Tenacity | 3.5 – 5.5 g/d | High-tenacity grade up to 7.0 g/d |
| Elongation at Break | 18 % – 32 % | Lower elongation = higher weaving stability |
| Boiling Water Shrinkage | ≤ 4 % | Ultra-low shrink ≤ 1.5 % for technical fabrics |
| Luster | Bright / Semi-dull / Full-dull / Cationic-dyeable | TiO₂ level adjusted per grade |
| Cross-Section | Round / Trilobal / Flat / Hollow / Octalobal | Shaped filaments on request |
| Intermingling | None / Soft (20–40 t/m) / Medium (60–80 t/m) / Hard (100+ t/m) | Weaving vs. knitting grades |
| Oil Content | 0.25 % – 0.55 % | Matched to downstream process |
| Cone / Cheese Weight | 2 kg / 5 kg / 10 kg / Warp beam | Precision winding ±0.5 g/d tension |
| Color | Raw white, optical white, dope-dyed | 500+ stock dope-dyed shades |
| Functional Grades | FR, UV-stabilized, antimicrobial, moisture-wicking | Additive masterbatch in spinning |
Application
FDY's smooth surface, consistent tension, and dimensional stability make it the preferred filament yarn across the widest range of fabric structures and end uses:
- High-Speed Weaving (Warp & Weft) — FDY is the standard choice for air-jet and water-jet loom operations producing taffeta, satin, chiffon, georgette, crepe de chine, and pongee. Its low and consistent elongation maintains even warp tension across the full beam width.
- Warp Knitting (Tricot & Raschel) — Fine-denier FDY (20D–75D) forms the runner and lap guide bar yarns in tricot lingerie, lace, and sports mesh fabrics.
- Embroidery & Decorative Thread — Bright-luster trilobal FDY delivers the sheen and smoothness that embroidery thread demands; its low elongation prevents thread distortion under needle tension.
- Narrow Fabrics & Ribbon — Woven ribbon, labels, elastic webbing face yarns, and luggage tape use FDY for its dimensional stability under tension.
- Technical & Industrial Textiles — High-tenacity FDY is used in airbag fabric, conveyor belting, filter press cloth, and coated tarpaulin where break strength and low creep are critical.
- Nonwoven Laminates & Scrims — FDY is used as the scrim reinforcement layer in laminated nonwovens for roofing membranes and geotextile composites.
- Home Textiles — Curtain fabric, sheer voile, and bedding end-uses leverage FDY's silky drape and excellent dyeability for vivid, colorfast results.
Advantage
- Ready-to-Weave Without Secondary Processing — Unlike POY, FDY requires no draw-texturing step. It ships directly usable on loom or knitting machine, shortening your supply chain by one process stage.
- Superior Dimensional Stability — Boiling water shrinkage ≤ 4 % (ultra-low grade ≤ 1.5 %) ensures fabric dimensions are consistent through dyeing, heat-setting, and garment washing.
- Broad Luster & Aesthetic Range — Bright, semi-dull, full-dull, and trilobal cross-sections cover every aesthetic from high-shine satin to matte suiting in a single yarn family.
- Functional Additives In-Spinning — FR agents, UV stabilizers, antimicrobial masterbatches, and moisture-wicking modifiers are incorporated during the melt-spinning phase — not as surface coatings — for durable performance that survives repeated washing.
- Warp Beam Winding Service — We offer direct warp beam winding for high-volume weaving customers, eliminating the rewinding step and reducing yarn handling waste by up to 2 %.
- Consistent Cross-Package Quality — Automated godet speed and tension monitoring ensures ≤ 1.0 % denier CV across the package, critical for even dye uptake and fabric uniformity.
- Sustainable rPET Grade — GRS-certified rPET FDY available with physical properties matching virgin PET, supporting brands' recycled content claims at no performance trade-off.
