Wet Ozone Bleaching

Our patent pending Wet Ozone bleaching apparatus is for denim industry. Despite widespread economic decline and a decrease in consumer spending, NPD reported, for the 12 months ending September 2009, a combined increase in sales of 5.3% for men’s and women’s denim in the United States, reaching $13.74 billion (Tucker, Ross. “Denim’s New Direction: Brands, Retailers Feel Pressure on Price.”  Women’s Wear Daily, 31 Dec 2009).  One particular style of denim garments that has achieved high popularity is the “faded”, “bleach down” or “washed-out” aesthetic.  The denim wash industry calls this process “denim bleach”.  In commercial denim laundry facilities, bleach (Sodium hypochlorite) or KMnO4 (potassium permanganate) is used in the denim bleach process.  This conventional method of denim bleach and the necessary neutralization step that follows (to remove residual oxidation chemicals) require water to be heated to a temperature range of 130 to 160⁰F, consuming a significant amount of energy in the process. The ozonated water treatment requires cold water, which significantly reduces energy consumption and decreases the cost associated with achieving the desired denim aesthetic.

Wet Ozone for Denim Bleach

Bleach Down of Denim Analysis