Description
Currently, the printing system of cotton's fibers, viscose, linen - which are printed with reactive dyes - does not include a system completely free of urea. The main objective of the project is to find new formulations for printing, in order to reduce the chemical load of the waste water. The new formulation that the project will be developing must fulfill the same functions as urea, which are completely necessary for fixing the dye to the fiber, in order to obtain a good performance and uniformity in all printings meters. What is also needed is a good quality of the final product, with good color fastness, and it should be easily removed. At last, but most importantly, the product must comply with all environmental and safety requirements and laws, and increasingly what customers require in that sense. The current system causes high levels of nitrogen in waste water, with the negative environmental impact that it causes. The project will therefore work on a new ecological process to give an environmental strategic change in the world of textile printing.
Summary of project results
The needed of the project was to reduce the environmental impact of the stamping processes. The results are sustained with the investigation of stamping new pastes, reduction of polluting level in residual waters derivatives of the stamping process, the study of the interaction between the different components of the stamping paste that incorporate products that substitute the urea, the study of the influence of the different components of the stamping paste over the colorfastness of the reactive colorings and the development of formulations based on these new compounds to improve washing, water, sweat, saliva and rub resistance of the patterned fabrics. The main aim of this project was focused on the investigation of new formulations of stamping pastes that don’t contain urea in order to diminish the chemical load of the residual waters. In conclusion, we have achieved to reduce the consumption of urea in 76%.
Summary of bilateral results