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Study on hydraulic spray atomizing system as a new resource-efficient dyeing-finishing method for wool fabric
Roos Mulder1, Mohammad Neaz Morshed2, Sina Seipel3
1Textile Material Technology, Department of Textile Technology, Faculty of Textile, Engineering and Business, The Swedish School of Textiles, University of Borås, 50190, Borås, Sweden.
Scientific Reports
|December 17, 2022
Summary
A new hydraulic spray (HS) system offers a resource-efficient method for continuous wool dyeing and finishing. This greener alternative achieves excellent color fastness and water repellency, proving effective for industrial scaling.
Area of Science:
- Textile Chemistry
- Sustainable Manufacturing
- Materials Science
Background:
- Conventional wool dyeing and finishing are resource-intensive, often involving high water and energy consumption.
- There is a growing need for sustainable and efficient textile processing methods in the industry.
Purpose of the Study:
- To introduce and evaluate a novel hydraulic spray (HS) atomizing system for continuous dyeing and finishing of wool fabric.
- To assess the resource efficiency and performance of the HS method compared to traditional techniques.
Main Methods:
- Wool fabric was dyed and finished using commercial dyes and finishes via one-step or two-step HS methods.
- Color strength (K/S), color difference (ΔECMC), and color fastness were analyzed.
- Finishing performance was evaluated using water contact angle measurements and assessed for wash and abrasion fastness.
Main Results:
- The HS method demonstrated effective dyeing of wool fabric with good color strength and fastness across various fabric weights and dye types.
- High water contact angles (up to 145°) were achieved, indicating substantial finishing performance with excellent wash and abrasion fastness.
- The one-step HS method outperformed the two-step method in terms of resource efficiency and overall performance.
Conclusions:
- The hydraulic spray system presents a viable, greener alternative for wool dyeing and finishing, offering significant resource efficiency.
- The method's performance is consistent across different fabric weights, dyes, and finishes, supporting its potential for industrial scale-up.
- This study highlights the importance of innovative, sustainable approaches to textile processing for reduced environmental impact.
