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Lenzing’s Indigo Color technology is making denim ‘greener’

Swatches | April 1, 2021 | By:

Denim remains an important market for Lenzing, and the introduction of TENCEL™ Modal with Indigo Color technology is designed to help reduce the ecological footprint of denim fabrics and garments. Photo: Lenzing Group.

Demand for eco-responsible alternatives in the denim industry is growing, as brands and supply chain partners seek greater sustainability. The Lenzing Group has responded by introducing TENCEL with Indigo Color technology

The technology incorporates indigo pigment directly into TENCEL branded modal fibers using a one-step spun-dyeing process. This delivers superior colorfastness relative to conventional indigo dyeing while using substantially fewer resources. 

Compared to conventional indigo dyeing, the new technology offers superior color retention through dry and wet crocking and rubbing, along with substantial water, chemical and electricity savings. In addition, a specially commissioned indigo pigment from dyestuff manufacturer DyStar® ensures that the technology can be certified with STANDARD 100 by OEKO-TEX®, guaranteeing ultra-low levels of aniline.

“This specially commissioned indigo pigment is based on more than a decade of our working experiences on indigo synthesis in Germany,” says Günther Widler, DyStar head of technology, denim.

Produced in Austria, predominantly from beech wood derived from sustainably managed wood sources, this new offering has been designated BioPreferred® by the United States Department of Agriculture. 

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