Not quite what I intended but at least it is a start and contact. Just a note I have taken the liberty of getting rid of my contact's name and title. Anything that I have changed will be italicized.
Billy, thanks for contacting the University. Thinking about the worst case scenario--although some foods may be handled by filling into pouches and boiling(acidic foods for short term storage), it is not recommended for most prepared foods. MRE's are packaged in impermeable pouches that do not allow air or moisture to migrate either way, plus they are processed in a retort that combines both high temperature and pressure. They are typically flat and of uniform thickness, and to further insure complete and even heating of even the most thick and dense pieces, the retort is agitated to provide complete penetration of heat through out package. The entire process is developed and monitored for each type of product, package size, and each batch, then quality assurance testing is done on each batch to insure safety. The last thing the military or any camper far from help needs is a case of food poisoning. I personally and proffessionaly would not consider it worth the trouble and risk, especially when there are some alternatives available:
Many new foods are on the market such as tuna, salmon, Spam, etc that are available in pouches-ready to eat. Some of the new products for microwaves offer stews, pasta meals and similar in lighter packaging-this includes Hormel's Completes, Uncle Ben's Bistro Express Meals, etc. They were developed for microwaving in the container, but you could transfer them to a pan as well for heating. There are some soups in the Tetrapack cartons now as well that are a little lighter and pack easier than round cans.
Another alternative that my brother (avid hunter) uses is to make his homemade stews, spaghetti sauce, etc. with minimal water, freeze in bags. Then he takes a soft lunch cooler, where he has punched a small metal thermometer through the top. He packs his frozen entrees with some dry ice in this small pouch, wraps this in the center of his sleeping bag. Each night he checks the temperature of the cooler without opening it-when it is getting close to 40F, he knows he has to start using the meals-or if lucky enough to be close to snow, he can repack the cooler with snow.
I will discuss your idea with a colleague , our faculty member who is very knowledgeable in this area-if he has any other thoughts, I will let you know. I understand your interest in this topic, and wish I had a more positive answer for you, but this situation truly warrants the following clichés:
"Better Safe than Sorry"