Homebrew PCBs

awakephd pravi:
>  
>
> Slavko, my experience suggests a different understanding of what is 
> happening. In the laminator that I am using, the heat is applied 
> between two plates; the rollers are on either side of these plates. 
> Moving the board more slowly allows the board to get hotter before it 
> encounters the pressure from the rollers. IOW, the rollers are not 
> supplying any heat, only pressure.
>
>

If that's true then there are different laminators.
I use Peach model's and Rex have same principle
 the heater heat parabolic curved alu extrusions and this is on one side 
of roller. That heat roller and in other side the laminated object is. 
The heather transfer area cover just little more than 1/2 of roller 
circumfanse.
The only hoot item near laminated object is roller itself.

If you are correct. ie board are preheated and after that just pressed 
by (cold) roller then slowdown should help. But I'm in doubt if the 
roller itself can handle raised temperature as cooper has good heat 
transfer compared with paper and plastic. I assume that in your 
laminator the rollers are just little heated by medium. In my laminator 
the roller itself heat medium.

That can be mystery solved why some laminator roller's are destroyed if 
heater is forced to aprox 200centigrade.

just different type of laminator heating principle. What is better is to 
be discovered.

Slavko.