Abstract
Electronic textiles (e-textiles) can incorporate conductive materials at all levels of integration, from fibers to yarns to fabric itself. There are many ways to connect the textile elements to electronic components with interconnect mechanisms from mechanical gripping to welding, to gluing, to printing, to embroidery, knitting, and weaving. 3D printing method offers the possibility of creating flexible and stretchable interconnects for e-textiles applications. This study explored 3D printing of flexible conductive filaments on fabric to create interconnects for hard electrical components as well as transmission lines and switches for electronic textile applications. NinjaTek Eel and Palmiga TPU based conductive filaments were printed on polyester knit fabric. Electrical characterization measurements as well as visual and haptic analysis of printed samples were conducted. The results showed that TPU based flexible conductive filaments offer possibilities of direct 3D printing onto textiles for electronic textile applications.
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