problem with lcd attachment to pcb

I have a set of accutech strain gauge electronic bathroom scales. The lcd started behaving erratically recently (scales are a several years old). As a matter of interest I pulled them apart to have a look. The lcd is connected to the pcb by a clear plastic? film with fourteen carbon? tracks about 2mm wide. It seems to have been glued to the pcb which has corresponding copper pads. When I went to replace the pcb in the case I noticed that the film had completely come away from the pcb. There seems to be no way to reattach it other than regluing it. I was thinking super glue but is there a specialised conductive adhesive which could do the job? Or some sort of edge connector which could clamp onto the film?