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Supercritical CO2 Dyeing Equipment

Supercritical CO2 Dyeing Equipment Description

supercritical dyeing equipment
supercritical dyeing equipment

The supercritical CO2 dyeing equipment (waterless dyeing) is the use of CO2 in the supercritical state of the characteristics of the substitution of traditional water for synthetic fiber dyeing, but also for natural fibers dyeing, not only can be used for fabric desizing, cellulose, fiber-biological materials, such as pre-treatment, can also be used for fabric functional finishing.

CO2 dyeing process

The CO2 fluid is pressurized to critical pressure through a high-pressure plunger pump, and then heats up to the critical temperature through the preheater, causes the carbon dioxide liquid to reach the supercritical state, then enters into the dye kettle which is put into the dyestuff, fully contact with the dye and dissolve, and the supercritical CO2 with the dye component through the dyeing kettle containing the textile material, the dye enters the textile interior and realizes the dyeing process.

After the completion of the working conditions of the supercritical CO2, so that the CO2 fluid dissolved ability to reduce, and then the unburned dyes and CO2 fluid separation, so that the dye left in the separation kettle, CO2 completely gasification, through the condenser condensate into a liquid for the next cycle of use.

Features of supercritical CO2 dyeing

  • Supercritical CO2 dyeing (Waterless dyeing ) the whole process does not need water, dyes can be recycled, dye utilization can reach 100%, without adding additives, greatly saving resources, is a high efficiency and energy saving and environmental protection of High-tech technology.
  • Ultra-critical CO2 dyeing fabric color bright, do not fade.
  • Supercritical CO2 dyeing technology, the process of good reproducibility, many batches of dyed fabric colorless poor.
  • Waterless dyeing technology than traditional dyeing technology requires a short process time, less process.

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