Has Film Ferrania considered a distributed manufacturing approach? This is kind of along the lines of 3D Printing concepts (i.e, produce in place, at will, from "recipes", in the case of 3D Printing, recipes are CAD files and BOMs). Press based coating will likely not be as flexible as 3D Printing, but some developments could take place that may drive it in that direction.
I must say that I very much like your out-of-the-box thinking.
Your ideas certainly
seem feasible on some level, and I applaud the concepts - but I just don't think we are there yet.
Film manufacturing requires highly specialized equipment and there is no viable business model, that I can think of, that allows for anything but centralized bulk production.
Distributed "bespoke" production would be too expensive for both the company and the end customer - and worse, there would be absolutely no way to control the quality or consistency of the product if it was being made by 100 different "mini-coaters". And since the vast majority of film consumers wish to buy fully finished rolls they can pop into their camera, that only adds to the problem.
3D printing technology has made huge strides in a short period of time. I just saw a YouTube video for the first desktop 3D printer that can produce metal objects, something that even two years ago required a very high-end machine with a very big price tag. But we are still a
long way from being able to 3D print film. Let's just take the 35mm canister itself as an example. It needs a piece of adhesive-backed felt, a tin outer shell (to be retail worthy), the core, a piece of tape or other type of fastener, and the end caps. 6 separate components made from 4 distinctly different materials that must be assembled in a particular order - and in complete darkness of course. Oh, and the tolerances of all these components must be at the micron level to prevent light leaks. 120 is a bit simpler, but coating carbon black onto paper and printing the numbers on the reverse side, in a way that does not in any way interfere with the film itself - is really much trickier to do than I ever suspected before learning the details myself.
I have yet to see a 3D printer that can make felt, and all of the other components are a tiny fraction of the cost to make using traditional die/molding methods. This will be true for some years yet.
With that said, we are keeping our eyes on 3D printing tech. At the rate it's advancing, who knows what may be possible in 15 or 20 years. Maybe one day, we can walk up to a small alcove in our ready room and say "Computer. Kodachrome, 120 format," and have it materialize. That would certainly make my life WAY less complicated.