Industry invited to witness soundwave-dyed fabric
Italian mill Pure Denim is inviting the industry into its factory in Milan on December 3 to see its soundwave-dyed fabric.
Using ultrasonic technology, the process infuses indigo dye particles into yarns, producing vibrant colours with just two dye baths.
The companies claim compared to traditional methods, this approach achieves a 60% reduction in CO2 emissions, 85% less water, and an elimination of toxic waste.
Inside Denim spoke to the partners about the technology last year. “Sonovia is introducing a completely new method that removes the problem of salt and achieves exactly the same effect,” said Luigi Caccia, Pure Denim’s CEO. “In traditional dyeing ranges, 800 metres of yarn are lost in between lots. Not only does Sonovia’s process reduce the water, chemicals and energy needed for indigo dyeing, it also saves the energy not used to remove hydrosulfite from wastewater,” he adds.
Mr Caccia added that there is no need for the water to have a special pH, which also makes the process easier and cheaper.
He said: “The quality of denim dyeing achieved through this technology meets commercial standards and brings significant environmental benefits. This approach will lead to a substantial reduction in pollution and production costs compared to traditional dyeing processes, marking a revolution for the fashion industry.”
