Jacquard iDye Poly are disperse dyes designed specifically for synthetic fibers and plastics.
Unlike dyes for natural fabrics, they activate only at high temperatures and set through continuous boiling.
Application is done through immersion dyeing in a pot. iDye Poly does not work in cold water and is not intended for surface application or painting.
🧵 Suitable Materials
✔ polyester
✔ nylon
✔ acrylic
✔ acetate / triacetate
✔ plastics
✔ 3D printed objects (PLA, ABS)
✔ buttons, zippers, and synthetic trims
❌ Not suitable for natural fibers (cotton, linen, silk, wool).
➡️ For natural fibers, use iDye for Natural Fabrics.
🔥 Stovetop Dyeing Method
⚠️ Important: Dyeing utensils should not be reused for food.
- Fill a pot with enough water so the material can move freely.
- Heat the water to a full, steady boil.
- Add the entire water-soluble iDye Poly packet (do not open).
- Add the material to be dyed.
- Maintain continuous boiling for 30–60 minutes, stirring frequently for even color distribution.
- Turn off the heat and carefully remove the material (it will be hot).
- Rinse thoroughly with hot water.
- Allow to dry and, for fabrics, wash in cool water with a mild detergent.
👉 Maintaining a stable, high temperature is essential for proper dye fixation.
🧶 Dyeing Blended Fabrics (Poly + Natural in the Same Dye Bath)
In many ready-made garments, the fabric and the stitching or trims are not made from the same fiber type. For example, a cotton garment may have polyester stitching.
In these cases, it is possible to dye synthetic and natural fibers in the same dye bath by combining:
- iDye Poly for synthetic fibers
- iDye for Natural Fabrics for natural fibers
The process is done stovetop, using high heat, so that:
- iDye Poly activates through boiling
- iDye Natural dyes the natural fibers at the same time
👉 This approach allows:
- synthetic stitching, trims, or components
- and the natural fabric itself
to be dyed together, resulting in a more visually consistent final appearance.
💡 Note:
Even with combined dyeing, each fiber type reacts differently. Subtle variations in shade are normal and part of the process.
⏱️ Time & Control
- Longer boiling times generally result in deeper color
- Materials should move freely in the dye bath
- High, consistent temperature should be maintained throughout the process
