Washability of e-textile stretch sensors and sensor insulation

An effective way to monitor body movements and positions (including physiological signals like breathing) without causing discomfort is through integration of sensors and electronics into base layers of clothing. However, for many applications (including sports and fitness), such sensors must be washable. Here, we present results of experiments evaluating the impact of washing on an e-textile stretch and bend sensor. Two cases are investigated: un-insulated sensors and sensors insulated with a fusible polymer film. Results show small-scale drift in the un-insulated sensor, which is magnified by machine washing and further by machine drying. Similar results are observed in delamination effects for the insulating film.