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

Nayak, Rajkishore; George, Majo; Jajpura, Lalit; Khandual, Asimananda; Panwar, Tarun

doi:10.1016/j.cogsc.2022.100680

Cited by 9 publications

(2 citation statements)

References 39 publications

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“…At this point, laser application is a faster and cleaner process, compared to the conventional methods, with low environmental impact as it is a waterless technique. 4 The laser process has three steps: (1) computer generation map of the area which will be irradiated with different fluency level function of the desired pattern; (2) control of the laser system, scanning system and conveyor system; (3) laser-fading process which is the key step of this technology. 5 Colour fading with laser application has now become a well-known and frequently used process in the denim industry.…”

Section: Introductionmentioning

confidence: 99%

“…The recent drive to achieve sustainability has led denim manufacturers and retailers to adopt sustainable chemical routes and circular economy models. At this point, laser application is a faster and cleaner process, compared to the conventional methods, with low environmental impact as it is a waterless technique 4 . The laser process has three steps: (1) computer generation map of the area which will be irradiated with different fluency level function of the desired pattern; (2) control of the laser system, scanning system and conveyor system; (3) laser‐fading process which is the key step of this technology 5 …”

Section: Introductionmentioning

confidence: 99%

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Optimisation of laser fading process in denim trousers: An industrial scale approach

Atav,

Gündüz,

Yaz

et al. 2023

Coloration Technology

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Colour fading with laser application has now become a well‐known and frequently used process in the denim industry. However, in practice, high strength losses and even tears may occur in the trousers as a result of incorrect or excessive laser application. In this study, the effects of resolution (dpi) and pixel time (μs), which are the two main parameters of laser colour fading, and also the effects of two‐passage laser treatments on colour fading and fabric strength were examined statistically and optimum conditions were determined. When the results of the studies are evaluated in general, it can be said that as the resolution (dpi) increases during the laser process, the colour fading effect increases, but when it is above the 31 dpi value, the strength loss increases excessively. As the second important parameter, the pixel time, increased, the colour fading effect increased. When the time exceeds 80 μs, there is a marginal increase in the strength loss value. Furthermore, it was observed that colour fading (%) values increase if laser process is applied in two passages, but in this case also the tear strength loss increases. It can be said that optimising the laser processing conditions in enterprises according to the product type (fibre content, weight, etc.) is a more accurate approach in terms of both the fading performance to be obtained and product quality. For 11.25 ounce trousers made of 95.3% cotton/3.4% polyester (T400)/1.3% elastane used in this study, it can be said that laser application could be made in two passages if necessary for obtaining high colour fading, however it should be noted that resolution and pixel time should not exceed 31 dpi and 80 μs, respectively. Provided that resolution and pixel time does not exceed 31 dpi and 80 μs, respectively, they can be changed depending on the degree of colour fading needed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimisation of laser fading process in denim trousers: An industrial scale approach

Atav,

Gündüz,

Yaz

et al. 2023

Coloration Technology

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Recent Trends in Sustainable Clothing and Textile Manufacturing

Nayak,

Panwar,

Grover

et al. 2024

Sustainable Textiles: Production, Processing, Manufacturing &Amp; Chemistry

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Eco-Friendly Ozone Process for Denim Garments as an Alternative to Conventional Bleaching

Atav,

Gündüz,

Yaz

et al. 2024

Fibers Polym

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In recent years, sustainability has become an important issue in production. The denim industry is environmentally problematic as an area where a wide variety of chemicals are used. Therefore, it is of great importance to replace various chemicals with clean technologies such as ozone. In this study, it was aimed to determine the effects of water content, treatment time and pH on both color fading and strength of the fabric during ozone treatment of denim textiles. Thus, optimum conditions of color fading with ozone in industrial applications have been revealed. It was found that it is most appropriate to work at 30% water content and the ozonation time should be changed according to the desired degree of color fading. Furthermore, it can be said that there is no significant difference between pH 4 and pH 7, but pH 11 is significantly different from them and the best color fading is obtained at pH 4. Since there is no significant difference between pH 4 and pH 7, it is thought that the pH 7 condition, which is simpler in practice and does not require the use of chemicals, would be optimal.

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

Cited by 9 publications

References 39 publications

Optimisation of laser fading process in denim trousers: An industrial scale approach

Optimisation of laser fading process in denim trousers: An industrial scale approach

Recent Trends in Sustainable Clothing and Textile Manufacturing

Eco-Friendly Ozone Process for Denim Garments as an Alternative to Conventional Bleaching

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