Lenzing AG has developed a new flame resistant cellulose fibre incorporating a black dyestuff that provides long-lasting colour for protective clothing.

The Lenzing FR Black is produced by injecting the colour directly into the spinning mass which means no flock- or yarn-dyeing is required, and no wastewater is produced.

This, combined with high yarn tenacity, makes the end-textile product longer lasting, the company says. It also has high fastness to both light and perspiration.