Description
Metafas produces user interface foils in-house. The most comprehensive configuration of a user interface foil consists of several main components: a graphic foil and often one, but sometimes multiple, technical foils. A technical foil is essentially a circuit on which membrane switches are placed or components are bonded using an automated Pick & Place system.
Metafas continuously works on improving its processes and products. With the increasing demand for screen-printed circuits, not only the quality but also the technical possibilities are being further explored.
In collaboration with an engineer at Metafas, this assignment focuses on determining the optimal combination of inks and adhesives in relation to production processes in order to optimize the adhesion of rigid components to flexible screen-printed circuits.
The assignment will include investigating in detail what happens within the adhesive bond. Physical stress, process window, ambient temperature, humidity, voltage, and current are factors that will be addressed during this research.
Metafas has developed a test setup to evaluate the adhesion of components on screen-printed circuits. However, this setup does not yet have a documented test procedure. In parallel with the assignment, the student is expected to document a test procedure based on the existing setup, which will be optimized using the data gathered during the research.