There is no general point in time for that change. There had been bans on nitrate film base in some countries but only concerning certain uses.
Changing to less flammable base material was difficult for the manufacturers for technical and economic reasons.
Nitrate-base cine-print film for cinema use has to be considered the most dangerous form due to circumstanstanes:
-) mass of material
-) extreme heating in case of failure
-) lot of people on confined space
Nevertheless Kodak introduced it first for their home-cinema materials.
Last edited by AgX; 07-11-2013 at 12:40 PM. Click to view previous post history.