Using ascorbic acid or sodium ascorbate to extend storage life of base templates for laser finishing
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United States of America Patent
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Dec 12, 2023
Grant Date -
Nov 3, 2022
app pub date -
Jul 12, 2022
filing date -
Feb 15, 2019
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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.
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