Dyes & Chemicals | News & Insights

An economical use of resources in Tencel dyeing

Published: November 4, 2023
Author: TEXTILE VALUE CHAIN

The Lenzing Group, a prominent manufacturer of wood-based specialty fibres worldwide, has unveiled a novel method that addresses knitting technique and yarn pre-treatment in order to produce looks that mimic the worn-out appearance of conventional colouring in knit and ready-to-wear clothing.

The new method is expected to be perfect for use on pre-treated fabrics and yarns created with Tencel Lyocell fibres, and it will drastically lessen the environmental effect of the dyeing and finishing processes used in the textile industry. Value chain participants gain additional advantages from the strategy, which also enhances the fabric mills’ wet-processing and production capabilities.

One-step method for dying

To obtain a desired shade of colour in traditional dyeing, several washes using a substantial amount of water, energy, dyes, and chemicals could be needed. The novel method requires only one dyeing round, saving up to 50%, 40%, and 90% of the water, energy, and chemical usage, respectively.

According to Rex Mok, Vice President of Fibre Technical Marketing and Development at Lenzing, “designers and manufacturers are seeking innovative ways to ensure that the materials and production processes deployed have a low environmental impact, while expanding design possibilities,” as consumers grow more aware of the environmental footprint of their purchases.

With our innovative method, any knit fabric may have a vintage or wash-down appearance without the need for labor-intensive bleaching procedures. Our new method overcomes the drawbacks of conventional dyeing and is a resource-efficient substitute that contributes to increased

sustainability and more affordable running expenses for textile factories. In order to promote broader acceptance of the new strategy and investigate fresh uses within the textile value chain, we will keep collaborating with our mill partners.

Unleash unlimited design possibilities

The novel method allows for the direct application of various colour shades and wash-down or fade-out effects on Tencel Lyocell fibres or Tencel Lyocell with Refibra technology. This makes it perfect for producing knitwear, ready-to-wear items, and clothing with a denim appearance in a range of colorways.

The new method is compatible with the regular, organic, or natural dyes that are currently utilised by fabric mills and yarn makers. The new method of processing yarn and fabric does not leave dye residue on the gear, thus the same equipment can be used repeatedly to produce fabrics or clothing in a variety of hues. Production delays will be reduced as a result of reduced machine downtime during colour lot changes, enabling yarn manufacturers and fabric mills to reduce costs while increasing production efficiency and sustainability.

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