DuPont’s Enzymes offer sustainability benefits for cotton textile production

DuPont’s Enzymes offer sustainability benefits for cotton textile production

On October 4, 2012 DuPont Industrial Biosciences announced at the Sustainable Textiles Conference in Hong Kong the results of collaborative trials with Pacific Textiles Limited Ltd., a Hong Kong based manufacturer of custom fabrics which prove significant sustainability benefits of bio-based enzymes used to replace traditional chemicals in cotton textile processing at bulk scale production. The enzymes are derived from natural resources and are biodegradable

The trials found DuPontTM PrimaGreen® enzymes used in combination can eliminate the need for caustic chemicals, while also dramatically reducing water, energy use and processing time. The trials were confirming the results from an earlier lab study DuPont conducted with Cotton Incorporated that was released in May 2012. DuPont has demonstrated with the trials that it managed to take the more eco-friendly enzymatic processes from the lab to full factory scale. It represents a more eco-friendly, high quality and cost effective alternative to chemicals commonly used in the pretreatment and finishing process of cotton textile manufacturing.

The results reveal that the use of DuPontTM PrimaGreen®, and compared to the traditional chemicals in cotton textile preparation, led to an average reduction of 70 % water (by litre), 33 % steam (in pounds) and 27 % in energy (as kWH) across dark, medium and light shade ranges. By bio-optimising these processes, total production time was reduced by an average of 27 %. In the Cotton Incorporated trial, the cotton knits produced showed good whiteness values, mot removal, maintenance of fabric strength and weight, and were receptive to dark, medium and light dye shades. Ronald K.K. Chan, assistant supervisor at Pacific Textiles (manufacturer of customised knitted fabric and its production base is in Panyu, South China in the heart of the Pearl River Delta Region) claims that the main advantages of using the DuPontTM PrimaGreen® process are savings in processing time and water, and that the enzymes ensure the high-quality fabrics produced are created in a more sustainable and cost effective process in line with our company’s goal to save more energy and reduce emissions as demanded by our customers. Pacific Textiles’ production plant is equipped with advanced production facilities, including a scalable water treatment facility and cogeneration power plant. The company provides integrated services of knitting, dyeing, printing and finishing, with an annual production capacity of around 87 million kg. The finished fabrics comprise more than 5000 designs and specifications to sell to the global market. The fabrics are used in a broad range of garments, including men’s, women’s and children’ clothing, sports- and swim- and inner-wear. The firm has well established relationships with owner s and leading brands worldwide.

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