In the textile industry, dyeing is an important process that gives fabrics a variety of colors. However, traditional dyeing methods face challenges such as high water consumption and wastewater treatment. As the concept of green production continues to grow, reducing resource consumption during the dyeing process and exploring more sustainable dyeing methods have become important focuses for the industry. In recent years, waterless dyeing technology has gradually entered the stage of industrial application, providing a new approach for the green development of the textile industry.

 1. Limitations of Traditional Dyeing

Traditional dyeing processes rely heavily on water. Dyeing one ton of fabric often consumes dozens of tons of water and produces a certain amount of pollutants, putting pressure on both environmental management and resource utilization.

2. Principles and Advantages of Waterless Dyeing Technology

To address this industry challenge, SBS has been collaborating with the Chinese Academy of Sciences since 2011 to develop waterless dyeing technology. It uses supercritical carbon dioxide instead of water. In its supercritical state, carbon dioxide combines the solvent properties of a liquid with the diffusibility of a gas, allowing dyes to fully penetrate the fabric. Waterless dyeing offers the following advantages: ①Completely waterless; ②No auxiliary agents required, with strong dye penetration; ③Fast dyeing speed; ④Uses carbon dioxide as the raw material, which can be collected from industrial emissions and recycled after dyeing.

3. Company’s Technical Capabilities

Currently, waterless dyeing technology has moved out of the laboratory and completed pilot-scale trials, entering a stage of scale industrial application. It has attracted attention from several European brands focused on environmental sustainability and receive relevant orders.