Specification
| Item | Details |
|---|---|
| Product | Dope-dyed (spun-dyed) polyester filament yarn |
| Yarn types | FDY, DTY and POY |
| Common counts | 75D/36F, 75D/72F, 100D/36F, 150D/48F, 150D/96F, 300D/96F; other counts by order |
| Color | Black as standard; custom shades matched to sample or reference |
| Luster | Bright, semi-dull or full-dull |
| Colorfastness | Tested to the standard you specify, such as ISO 105 series, per lot on request |
| Shade control | Color approval before bulk production; lot-to-lot shade checked |
| Variants | Recycled and functional types on request |
| Package | Paper tube; cartons on pallets |
| Origin and port | Haian, Nantong, Jiangsu, China; Shanghai seaport |
Application
Dope-dyed yarn is chosen where color stability and process savings matter. Typical uses are:
Sportswear and apparel: knit and woven goods in solid shades, especially black.
Home textiles: curtains, upholstery and cushions that face light and washing.
Outdoor fabrics: awnings, covers and tents where sunlight fades piece-dyed color.
Automotive textiles: seat covers and trim with demanding lightfastness needs.
Bags and luggage: oxford and heavier fabrics with deep, even color.
Narrow fabrics: webbing, ribbons and tapes with consistent shade.
Because color is inside the filament, the yarn does not rub off or fade at the surface in the way applied dye can.
Advantages
High color fastness: pigment inside the filament resists light, washing and rubbing.
No yarn dyeing step: saves water, chemicals and energy, and shortens the supply chain.
Consistent shade: even color from end to end, with fewer streaks from uneven dye uptake.
All yarn types: FDY, DTY and POY in the same color program.
Shade matching: approval before bulk production to your sample or reference.
Dope dyed versus piece or yarn dyed polyester
| Point | Dope dyed | Dyed after spinning |
|---|---|---|
| Color location | Inside the filament | On the surface |
| Water and chemicals | None for yarn dyeing | Dye bath required |
| Color flexibility | Fixed once spun; plan shades early | Shade can change late |
| Order planning | Order by shade and quantity | Buy raw white and dye as needed |
| Best for | Stable solid colors, outdoor and automotive | Fast color changes and small runs |
Ask for a color card and a trial lot first, because shade is judged on the final fabric.

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