Influence of textile structure on the wearability of printed e-textiles

2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) Pub Date : 2020-08-16 DOI:10.1109/FLEPS49123.2020.9239562

A. Komolafe, Helga Nunes-Matos, M. Glanc-Gostkiewicz, R. Torah

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Abstract

To achieve durable printed circuits on textiles, it is necessary to print low-cost polymer films that interface the fabric with the printed circuit. The film smooths the surface of the fabric to enable the printing of thin and flexible conductive films on the fabric. When printed, the thickness of the polymer films can dominate the fabric and limit the flexibility of the printed e-textile. This paper investigates the reduction of the polymer film thickness for printed and wearable e-textiles by controlling the thread count of the fabric using different blends of polyester/silk/cotton fabrics. A $50 \mu \mathrm{m}$ thick polyurethane interface layer with a surface roughness, Ra value of $1.7 \mu \mathrm{m}$ is reported on a 100% plain weave polyester fabric. The PU thickness is 4 times less than the state of the art and shows more than 80 % reduction in the proportion of interface material to fabric thickness of the printed e-textile. This minimizes the impact of the printed film on the fabric.

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织物结构对印花电子纺织品耐磨性的影响

为了在纺织品上实现耐用的印刷电路，有必要印刷低成本的聚合物薄膜，使织物与印刷电路相连接。该薄膜使织物表面光滑，从而能够在织物上印刷薄而柔韧的导电薄膜。印刷时，聚合物薄膜的厚度会支配织物，并限制印刷电子纺织品的柔韧性。本文研究了通过控制涤纶/真丝/棉织物不同混纺织物的支数来减少印花和可穿戴电子纺织品的聚合物膜厚度。在100%平纹涤纶织物上制备了一层50 \mu \mathrm{m}$厚的表面粗糙度为1.7 \mu \mathrm{m}$的聚氨酯界面层。PU厚度比目前的技术水平少4倍，并且显示印刷电子纺织品的界面材料占织物厚度的比例减少了80%以上。这样可以最大限度地减少印刷膜对织物的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS)

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