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William Babe1 Hasan Shahariar2 3 Jesse Jur2 Chengeto Gwengo1

1, Liquid X Printed Metals, Pittsburgh, Pennsylvania, United States
2, North Carolina State University, Raleigh, North Carolina, United States
3, Funxion Wear, Raleigh, North Carolina, United States

This paper describes a conformal inkjet printing process of particle-free silver ink on uncoated polyester-based textile surfaces. In-situ heat curing of the textiles during the printing process is used to significantly improve the conductivity and line resolution of the printed traces. A minimum sheet resistance of 0.1 ohms per square has been achieved on polyester-based knit, woven and nonwoven fabrics. Durability testing results suggest the conductive fabrics can withstand bend, stretch, abrasion and wash testing. These findings create the possibility of integrating inkjet printing in the scalable & automated manufacturing process for e-textile products.

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