Stretchable electronics – new concepts and solutions

A significant trend in electronics is their steadily increasing integration into our everyday lives. As a result, flexible and rigid-flexible circuits, for example, have become part of many everyday products. The demand for increasingly smaller circuit carriers that are also better adapted to the three-dimensional contours also remains high.

Würth Elektronik has been working on solutions to these issues for several years and, as part of the solution, it worked with the Fraunhofer Institute to develop stretchable circuit carriers. By using thermoplastic polyurethane as a new base material and designing conductor tracks in meander or snake shapes, for example, properties such as extreme flexibility and elasticity can be created. These characteristics open up entirely new possibilities for the integration of electronics in the fields of sensor technology, (soft) robotics and smart textiles. The soft and skin-friendly properties of polyurethanes also make them suitable for use in the medical sector.

Benefits of STRETCH.flex:

  • Depending on the type of layout: dynamic stretchability from 5 - 20%
  • Wide range of TPU properties
  • Very adaptable material – almost any shape can be produced
  • Repeated rotation without impacting stability and electrical properties
  • Skin-friendly
  • Can be combined with textiles
  • Thermoformable

Our expertise = your gain!

Find out more about potential applications of the stretchable circuit board. The following resources will demonstrate how you can incorporate this technology into your system: