Using Ascorbic Acid as Anti-Ozone Treatment for Fabrics

Abstract

Indigo-dyed garments are treated with an anti-ozone agent to prevent ozone-related degradation of the garments before laser finishing. Without treatment, the garments can exhibit color loss (e.g., color change or fading) from exposure to ozone in the atmosphere. The indigo-dyed garments with anti-ozone treatment can serve as base templates in a laser finishing process flow. The anti-ozone treatment of the base templates can include a rinse including an ascorbic acid or vitamin C constituent during a base preparation process. Then quantities of these base templates can manufactured and stored for periods of time without exhibiting ozone-related degradation effects.

The invention claimed is: 
     
         1 . A method comprising:
 treating a garment template with ascorbic acid as an anti-ozone treatment, wherein the garment template is an assembled garment made from fabric panels of a woven first material comprising a warp yarn comprising indigo-dyed cotton yarn, and the fabric panels are sewn together using thread;   after being treated with ascorbic acid as an anti-ozone treatment, applying a finishing pattern to the garment template.   
     
     
         2 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 1.5 to about 2.0 grams per liter of ascorbic acid. 
     
     
         3 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 2.0 to about 2.5 grams per liter of ascorbic acid. 
     
     
         4 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 2.5 to about 3.0 grams per liter of ascorbic acid. 
     
     
         5 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 3.0 to about 3.5 grams per liter of ascorbic acid. 
     
     
         6 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 2.0 to about 4.0 grams per liter of ascorbic acid. 
     
     
         7 . The method of  claim 1  wherein the treating a garment template comprises washing the garment template in a wash comprising about 1.5 to about 2.5 grams per liter of ascorbic acid. 
     
     
         8 . The method of  claim 1  wherein the applying a finishing pattern comprises using a laser to burn the finishing pattern onto the garment template. 
     
     
         9 . A method comprising:
 treating a garment template with sodium ascorbate as an anti-ozone treatment, wherein the garment template is an assembled garment made from fabric panels of a woven first material comprising a warp yarn comprising indigo-dyed cotton yarn, and the fabric panels are sewn together using thread;   after being treated with sodium ascorbate as an anti-ozone treatment, applying a finishing pattern to the garment template.