Getting epoxy to stick to mylar and polyurethane?

Hey guys,

I’ve noticed that epoxy doesn’t stick at all to most plastics, such as mylar (polyester film) and polyurethanes. But could I chemically treat these plastics to make them stick? I don’t want to do any sanding for reasons I won’t go into right now.

-Gene

Yes, one of my customers received a batch of mylar film, and it sticks like crazy on epoxy.