Bit of a bummer there...
Ok, a bit of a stab in the dark here, but how hard is the rubber the rollers are made of?
If it is soft enough and you fancy a go at modding to accept PCB's, how about spinning the rollers using a drill (obviously removing the motor/drive gear first) and creating multiple grooves, let's say 1mm deep and 1mm wide in both the top and bottom rollers, leaving another 1mm width inbetween grooves. This may then allow the rubber to compress a little, allowing a PCB to pass through, whilst still preserving the ability to be used as a laminator.
HTH.