We need more than a dozen kilometers of paper for our first run. This sounds like a lot, but it is puny compared to what the paper manufacturers want to run. "OTS" means Off The Shelf, referring to commercially available things. We are fortunate that some 4x5 sheet films are OTS items, because the cost to develop and run new ones would be enormous.
Over the last four weeks I have spent nearly every day researching "lightproof paper" and "baryta paper" to see if I can find any OTS papers that fit our needs. I've visited paper mills and contacted others, and still do not have a complete answer to what we need. I'll continue to look for the perfect paper that is ready to go, but anticipate that we have to contract custom runs.
For the Reciever
A 7 or 8 mil, totally lightproof baryta paper is needed. One excellent company named Felix Schoeller of Germany made such a thing for Polaroid in the past, and we have contacted them. Since there is nothing OTS about this paper, I have found an alternative lightproof coating that can be applied to ordinary baryta paper if needed. But the extra cost of doing that is something I prefer to avoid. The Receiver paper has to be respooled and then converted to the right width for our Sleeve Machine.
For the Cover
Any color, as long as it is completely lightproof, thin, perhaps 5mil, and available converted to long rolls for the machines we are building. Another European company, James Cropper of UK, has made these types in the past.
Long rolls aren't needed as this is a die-cut part, but it still should be reasonably opaque, lubricious and stiff enough to allow support of the 4x5 film sheet, pod, and clip attachment.
|This is not even a large roll of paper, by most standards|
I have not found a product engineer who is a paper expert, though I assume such a person exists somewhere in the paper industry. Each manufacturer has their own experts who know the details of what they make, but I would like to hire a person experienced in sourcing and specifying "technical papers, as a consultant. The right person will have direct experience with buying papers for industrial applications - preferably in North America.
A box and other papers are needed to put the product in including labels. I think we can get these easily, but it will take some work, and have a cost associated with it too.