[Towmaster]

We own / run a business that works with acrylic and some polycarbonate. Acrylic can be cleaned with any of the thinners / gunwash / type of cleaner. We use a spraypainting 'gunwash' to remove any of that sort of stuff. Soak the paper with tissues soaked in gunwash or thinners and slowly rub it off. Don't rub too hard or you will scratch the acrylic. If you have any problems and scratch it too badly send me a PM and I will help you out.
Be very careful with Polycarbonate as it will turn a milky white colour the moment you use any type of gunwash etc cleaning agent on it. Warm soapy water to clean works fine.