3D printing using UV-curable systems for bandages

The research project developed an innovative combination of 3D dispensing and UV-LED curing for the digital, partial Functionalisation of textiles, using sports and medical bandages as examples. A urethane acrylate-based and a silicone-based formulation were developed, which can be printed onto polyester and polyamide-elastane knitted fabrics and cured simultaneously using UV-LED spotlights. Both formulations could be supplemented with additives such as antimicrobial agents and pigments without impairing processing or curing. The prints proved to be firmly adhered and resistant to creasing, abrasion and washing. As demonstrators, circular-knit blanks were functionalised into knee supports with patella rings and shin guards. The combined technology allows for customisation of textiles with significantly reduced set-up times, as pattern changes are carried out entirely digitally and no tools are required.