Homebrew PCBs

I use a laminator, but the key for me seems to be three things:

1. HOT.  I let the laminator heat up completely.

2. Multiple passes.  It takes a while for the pcb itself to get hot
   enough that it won't suck the heat away from the toner.

3. Patience.  I soak the paper (pulsar's) until it just floats away, I
   don't try to pull it off.

So, you might want to try pre-heating the PCB itself to just below the
toner softening temperature (too hot, the paper sticks right away,
which might not be where you want)

Also, try cleaning with alcohol instead of acetone, and if you have a
heat gun, try pre-heating the pcb with that as it will dry off any
cleaning liquids remaining.

The heat gun is also handy after the transfer; you can re-melt the
toner until it's shinier, and hopefully seal it some more.  That also
dries the board without needing to physically touch the toner, if
you're post-processing it (i.e. green TRF sealer).