hey… i am using the plastic drafting film for my FTIR.... works super good.... but there is one problem .. the projection gives a visible hot spot on the surface the moment i project anything white… (which i guess can be fixed with two layers and stromger IR) so most of my interfaces are on black background. the film is glossy on one side and matte finish on the other… keeping the matte finish towards the projector side helpas a bit… else the cam picks some of the IR reflected from the glossy surface. ... in india its called Garware film and is easily available at any architectural supplies store.
PS .. dont confuse it with the paper equivalent .. (gateway drafting paper)… it works fine but being paper, gets wrinkeld and greasy more easily over handling....