So, here is plastic-like paper, for use in a slate and stylus or a Braille-writer. This material has a matte surface, is non-toxic, moisture-proof, and classroom-safe. These plain (unpunched) sheets of plastic are of the standard letter-size (8-1/2" X 11"). And even though each sheet is only 0.003 mm thick, it will hold sharp, bristling, uniform Braille dots - and keep them that way for a long, long time.
(From the Writing Braille shelf.)