TEXTILE DYEING WITHOUT WATER!
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REVOLUTIONARY
DYING PROCESS WITHOUT WATER OR CHEMICALS
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Textile dying produces one of the largest industrial environmental
impacts due to its enormous use of water and chemicals. The present process,
based on supercompressed carbon dioxyde, eliminates the need of water and
chemicals, drastically diminishings such an impact. Read more …
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NIKE
MOVES TO REVOLUTIONARY WATER-FREE, CHEMICAL-FREE DYEING (from an article in SustainableBusiness.com News; dec. 16, 2013)
Nike and Adidas are
beginning to use what they call a "revolutionary technology" for the
textile industry - a carbon-based process that dyes polyester without the use
of water or chemicals.
Here's how it works.
Carbon dioxide is put under extreme pressure, which temporarily turns it
into a liquid that subsitute for water in dyeing textiles. As it cools, the
carbon turns back to a gaseous state, where 95% of it can be recycled and used
again.
Founded in 2008,
Netherlands-based based DyeCoo is the world's first supplier of industrial
carbon-dyeing equipment. The process was invented some 25 years ago, but DyeCoo
figured out how to make it cost-effectively. Introduced to the market the year,
it only dyes polyester; DyeCoo is working on expanding it to cotton and
other materials.
Without the use of water, fabrics don't have to be dried - and that saves 60% of energy. They also dye 40% faster. And there's no need to add chemicals to get the dye to adhere to clothes, as is necessary when water is the medium.
Without the use of water, fabrics don't have to be dried - and that saves 60% of energy. They also dye 40% faster. And there's no need to add chemicals to get the dye to adhere to clothes, as is necessary when water is the medium.
Conventional textile dyeing is extremely water and
chemical-intensive: for every two pounds of textiles dyed, 25-40 gallons
of water are used. Nike's contracted textile plants consume about 3 billion
gallons of water a year to process polyester and cotton for its products, and
Nike itself uses another 325 million gallons.
A couple of
years ago, after criticism from Greenpeace, Nike announced it would eliminate hazardous
chemicals from its global supply chain by 2020.
As the biggest
apparel-maker in the world, Nike is among
the few corporate leaders that are truly committed to sustainability. Its Environmental
Apparel Design Tool is the basis for The Higg Index, which is helping clothing and shoe retailers assess
and improve on the environmental impact of brands they sell.
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