Archroma claims cleaner dyes can 'rewrite' black denim
13/09/2023
The dyestuff “delivers an overall impact reduction to 57%, measuring its effect on human health, ecosystems and resources”, compared with standard Sulfur Black 1 liquid, according to Archroma.
Unlike traditional synthesis processes, it does not produce any ammonia, sodium salts waste or liquid effluents, and water consumption in the synthesis process is reduced by 73%, it added.
The new dyestuff, when adopted with the full Archroma coloration system, delivers a black color with on-tone wash-down effect and cleaner effluent at the mill.
Sulfur dyes are the most commonly used dyes for coloured denim, however, some are being phased out due to the toxicity of the dyeing process and wastewater contamination.
Umberto De Vita, a director of denim at Archroma, said: “For more than a century, the traditional Sulfur Black 1 synthesis process consumed substantial water and energy resources and produced unwanted effluents and residues. With the Diresul Evolution Black Liq, Archroma is rewriting the future of denim for market leaders like Textil Santanderina that want to produce more sustainable collections with high-value aesthetics and top fabric quality.”
The new product is manufactured in Spain at a production facility near Barcelona, where Archroma produces sulfur dyestuffs for mills and brands in Europe and global markets.
Textil Santanderina and Archroma previously collaborated to produce an aniline-free indigo denim collection with the use of Denisol Pure Indigo.
Ramón Ríos Quintana, a general manager at Textil Santanderina, said: “We are delighted to collaborate with Archroma once again to help our brand customers stand out in their markets with new and innovative denim looks and premium quality fabric based on a cleaner coloration system for outstanding resource savings.”
Image: Textil Santanderina is located in Cantabria, northern Spain.
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