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DyeCoo uses reclaimed CO₂ as the dyeing medium, in a closed loop process

DyeCoo

Type of organisation or company:

Country: 
Netherlands
City: 
Weesp

Language for original content:

Scope:

Start/End date: 
01/2016
Ongoing: 
Yes
Expected end date: 
02/2019
Description: 

DyeCoo, based in Weesp, the Netherlands, has more than 15 years of experience in CO₂-based textile processing technology. By replacing water with CO₂ for the dyeing process, no wastewater is generated. Furthermore, DyCoo uses reclaimed CO₂ from existing industrial processes, making it a closed loop operation.

DyeCoo uses a patented and industrial proven technology based on CO₂, instead of water, so no waste water treatment is necessary. The technology uses reclaimed CO₂ from existing industrial processes as the dyeing medium, in a closed loop process.

When pressurised, CO₂ becomes supercritical (SC-CO₂), a phase between a liquid and a gas. In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily. Thanks to high permeability, the dyes are transported easily and deeply into fibres, creating vibrant colours.

CO₂ dyeing does not need added process chemicals to dissolve dyes. DyeCoo's technology uses 100% pure dyes and, with more than 98% uptake, nothing is wasted.

DyeCoo is featured on BusinessEurope's Circular Platform and as Eco-Innovation Action Plan in practice.

Identified challenge(s):

Main results: 
  • Energy efficiency: CO₂ dyeing is a dry process, eliminating the need to evaporate water. The addition of efficient colour absorption and short batch cycles makes this technology very energy efficient.
  • Lower process costs: short batch cycles, efficient dye use, no waste water treatment all contribute to significantly reduced operating costs.
  • Vibrant colours: DyeCoo uses 100% pure dyestuff, giving beautiful, vibrant colours. The dyestuff penetrates deep into the fibres creating intense colours with excellent quality characteristics.
  • Geographical freedom: dyeing without water equals geographical freedom, becoming completely independent from clean water availability. Fabric can be dyed in the middle of the Sahara, allowing production to occur closer to market and to shorten lead times.