See below the link to a video showing the clearmelt-process which was demonstrated at the Engel Symposium 2009. The functional touch element was realised by plastic electronic together with Engel (clearmelt-Prozess),  Schöfer (form) Hennecke (PUR maschine) Votteler (PUR) und Bayer (ABS).

http://www.kunststoffe.tv/de/showfilm.cfm?id=105 
(Please choose in the left selection: Engel Symposium, Clearmelt-Verfahren)