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Development of home textiles by dtp using novel hybrid inks

The development of new functional home textiles (bactericide/deodorant, antistatic and flame retardant) through inkjet printing direct on garment by means of eco-friendly hybrid inks that merge decorative and functional purposes.

Textile industry is a challenging sector which is demanding innovative and eco-friendly solutions according to the customers' requirements. Regarding innovation, functional textiles are considered a novel and growing segment in the textile industry. The techniques available in the state-of-the-art for the inclusion of functionality on the textiles are related to chemical or physical post-treatments. One novel approach for the development of specific functional textiles consists on inkjet printing due to its versatility, high resolution abling to combine functional and decorative purposes and less contaminant properties compared to traditional decoration techniques like screen printing or roller printing. Thus, the main goal of the project is to obtain new decorative and functional home textiles through the development of "eco-friendly hybrid inks", it means, new inks with decorative and added functionality to be applied by inkjet printing technology. The specific products envisaged will be: pillows, sleeping bags and blankets and the final functionalities added to the corresponding textiles will be: bactericide/deodorant, antistatic and flame retardant properties. Different approaches will be taken into consideration simultaneously for this purpose: 1.- Development and optimization of eco-friendly hybrid inks (chromatic + functionality) based on waterborne compositions to be applied by means of inkjet printing. Regarding color, two approaches will be addressed in the project, organic pigments and organic soluble compounds (dyes). On the other hand, functionality will be achieved adding inorganic nanoparticles in the ink formulation. 2.- Development of pre-treatments and post-treatments suitable for new hybrid inks and final fabrics used so as to improve final color fastness, brightness and durability. 3.- Study of novel spinning processes to develop new fabrics to reach the final described products. The estate-of-art consists of organic inks based on soluble dye compounds which reacts directly with the functional groups of textile fibres, which means that every kind of fabric needs an specific type of ink. Additionally, pre and post treatments and special washing processes are needed to prepare the fabrics for the inks which have a big environmental impact. Another drawback is that these dyed-based inks have only decorative properties without any additional functionality. According to these limitations two different approaches will be taken into account to solve them: 1. Combination of soluble dyes with inorganic particles which add functionality and can be used in several types of fabrics. 2. Substitution of soluble dyes by using organic pigments which can accomplish aesthetic requirements and can be used also in different kind of fabrics. Therefore, hybrid inks developed under the project will be an important breakthrough as a result of their use in a wide range of textiles.Thus, the main challenges in the development of hybrid inks will be to combine both functionality and chromatic properties in only one ink and to achieve the best performance of these hybrid inks with eco-friendly compositions. For this purpose, in a first stage, both properties, chromatic and functionality will be developed separately as different inks, and then, in a second stage combined in one ink. Another aspect to take into consideration is that organic dyes and pigments exhibit low stability to UV light. For this reason, the encapsulation of the corresponding dyes and pigments will be also studied with polymeric materials through single and double emulsion chemical reactions as well as coating with silica shell through sol-gel processes . Furthermore, the improvement of pre-treatments will be also carried out in parallel to the development of hybrid inks. Different approaches will be evaluated, from traditional chemical activation treatments or alternatives such as environmentally friendly treatments like plasma functionalization. The project will cover all the value chain through the optimization of the different stages involved in the fabrication of the final functional textiles (design of fibers and fabrics, pre-treatments, inkjet printing and post-treatments) with the aim of achieving high performance textiles with high durability and technical properties. In this regard, TORRECID will be responsible for developing inkjet hybrid inks as well as printing trials in order to optimize and improve developed inks, KTDI will carry out the development of novel spinning processes for new fabrics and the characterization of the printed fabrics (color fastness, resistance to washing cycles, thermal treatments and mechanical forces, specific and standardized tests for flame retardant and bactericide textiles) and SEOJIN tasks will be focused on the optimization of pre and post-treatments, study and design of fabrics with the novel fibers, the inkjet printing process of the final prototypes and final validation stage.
Acronym: 
HYTEX
Project ID: 
13 179
Start date: 
31-10-2018
Project Duration: 
36months
Project costs: 
1 710 000.00€
Technological Area: 
INDUSTRIAL MANUFACTURING, MATERIAL AND TRANSPORT
Market Area: 
Other industrial process machinery for textile, paper and other industries

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