Dying a Single Shirt With CO2 Saves 25 Liters of Water [Video]
The simple act of turning a shirt from white to blue—or any color—requires 25 liters of water and enough harmful chemicals that every clothing manufacturer should be looking for safer methods. Like this fantastic CO2-based DryDye technology that Adidas has started using which doesn't require a single drop of H2O. But it's not like the color dyes are blasted at the shirts with a pressurized CO2 canister—although that would be pretty awesome. In reality, the fabrics and chemical dyes are placed in a large sealed chamber, and CO2 is pumped in to a pressure of about 74 bar. The tank is also heated to 88 degrees fahrenheit at which point the CO2 behaves like a gas and a liquid, allowing the colored dyes to thoroughly permeate the fabrics without the use of excessive chemicals. The DryDye process actually uses about half the chemicals as traditional water-based dying methods, and requires about half the energy too, so it seems like an all-around better way to go about tinting cloth...