Yesterday I bought a cheap A4 laminator from Tesco; I'd seen PCBs done like this before so I thought I'd try it out myself as I didn't want to use the household iron as it does tend to smudge.
I used an old Press'N'Peel reject print I did some time ago; I did quite a few passes through the laminator before I cooled the PCB and removed the backing film. It seemed to work well, the only problem was having to put it through so many times.
I had an idea to add a push button switch on the motor wires, so I could pass the board through manually using the switch so it would hold the time in the laminator thus keeping it hot.
Ok. I've just added a push button to the motor; so now I can slow it down going through; it seems to work well!