Laser and ozone applications for circularity journey in denim manufacturing- A developing country perspective

Denim is recognized across the globe for its vintage worn out effect, rough and tough look along with comfort. Its market share is growing tremendously due to its popularity in all segments of consumers. Despite several advantages, denim manufacturing negatively impacts the environment as it is associated with the use of large amount of water, energy, chemicals, and emission of greenhouse gases. This paper highlights the potential of digital laser technology and waterless ozone technology to promote sustainable chemistry enabling circularity in denim manufacturing. Using the extant literature and collecting data from 2 different companies, this paper highlights the sustainable technologies in denim chemical processing and their significance in circular fashion (CF). It was found that the use of digital laser technology in denim patterning, color fading and surface engraving reduced energy and water consumption; saved significant amount of chemicals and prevented effluents getting discharged to the water bodies. Similarly, the application of ozone in denim washing and color fading helped to resolve the abovementioned issues in denim manufacturing. The findings from two Vietnamese fashion companies showed that using laser and ozone technologies not only help to achieve sustainability but also lead towards fashion circularity.