Investigation of One Bath Dyeing Processes of PES/CO Mixed Towel Products and Investigation of Test Results

Abstract

In recent years, restrictions on water use have increased due to the increase in population, global warming, rapid pollution and depletion of water resources. All over the world, not only warnings but also laws are issued and more environmentally friendly and sustainable production processes are developed. Our company is one of the well-established bathrobe and towel manufacturers and exporters in Denizli. As a result of the environmental policies adopted in 2014, environmentally friendly and harmonious production processes are implemented.The method normally used for dyeing PES/CO mixed towel products; first dyeing of the polyester part under HT conditions, reductive washing followed by dyeing of the cotton part with reactive dyestuff. Although disperse dyes require acidic environment and HT conditions, dyeing processes must be done in two separate baths because reactive dyestuffs are fixed in alkaline environment. It is stated in the literature that one-bath, one-step dyeing is possible by using disperse dyestuffs resistant to alkaline environment or by using reactive dyestuffs that can be fixed in acidic-neutral environment. In the light of the information obtained, one-bath dyeing of PES/CO mixed towel fabrics, which will be a new process for our processing, has been carried out. With the study, the time, chemical, energy and water values ​​consumed in this new process were examined and studies were carried out for the most ideal use. Since the study is a sustainable dyeing process, all dyeing steps have been reviewed. The most important criterion is the improvement of the water and energy consumption steps spent in the whole process for dyeing in the one-bath dyeing step. With this improvement, there is no difference in color and fastness between the old system and the new system. Research and experimental studies on this subject are also summarized in this paper.With this new process study, our company's water, energy and chemical savings, the company's impact on the environment and the waste water load have been reduced. In this way, our company's carbon footprint has been reduced and a more sustainable production process has been implemented. In the test results, there was no problem in washing, color and rubbing fastness efficiency. It is thought that the publications to be made with the results obtained can give ideas to the dyehouse businesses in Denizli and other provinces and develop new R&D ideas for improvements.