Function
ecodye: The art of eco-friendly polyester dyeing
Less time, less water, less energy – ecodye is a specially developed auxiliary concept for polyester (PES) dyeing processes.
The technology accelerates the dyeing process of yarns and piece goods, thereby saving resources and costs, while simultaneously protecting the environment.
In addition, ecodye improves product quality, productivity and offers maximum flexibility in use.
Benefits
Less time | Less water | Less energy |
Performance
- Improves product quality
- Less spots and agglomeration
- Limitation of precipitation and oligomer release
- High fastness levels
- Improved reproducibility and shade stability
- Suitable for all machinery, substrates and textile forms
- Existing dye recipes can be maintained
Dyeing process
This innovative auxiliary concept allows a safe and economic dyeing of polyester fibers and piece goods. With ecodye a shorter heating phase can be achieved (up to 5°C/min., depending on the available machine power) without impairing the levelness of the dyeing, even for critical shades or dyestuff combinations. ecodye shows strong dyestuff retarding properties during heating phase, especially in the critical area between 90° – 120°C in which the dyestuff diffusion is strongly accelerated.
Improved dyeing process for PES-yarns
Standard process for the dyeing and finishing Heating rate 3°C/min. up to 80°C, following 1°C/min. to 130°C |
ecodye rapid dyeing process (one-bath dyeing and Heating rate 5°C/min. up to 130°C, dyeing for 30 min. at 130°C |
Improved dyeing process for PES piece goods
Standard migration process for PES-piece goods Heating rate 3°C/min. up to 80°C, following 1°C/min to 130°C; |
ecodye process for PES-piece goods with Heating rate 5°C/min. up to 130°C, dyeing for 30 min. at 130°C |
Study: Development of a rapid dyeing process on the basis of a new dyeing auxiliary, final report AZ 29947, supported by Deutsche Bundesstiftung Umwelt DBU (German Federal Environmental Foundation)
The auxiliary concept offers the possibility of a reductive clearing in the cooled down one-bath dyeing. It prevents dyestuff agglomeration and precipitation due to strong dispersing properties and very high dyestuff affinity on the fabric, even in low pH areas.