I've been an an artist and picture framer for a couple of years and after researching this topic for the past several months, I'm more frustrated than educated. Due to the different types of digitals combinations--inks, printers, photo papers, bonding tissues, bonding temperatures, dwell times, mounting boards--there is no clear-cut method of dry mounting a digital. I have found some success dry mounting at low temps but I choose to hinge my digitals (up to 8X10) more often.
Try this web site:
www.thegrumble.com and search the forum for digital or mounting. Be prepared to be overwhelmed for a wide range of input!! I've contacted product manufacturers and other professional picture framers and got a wide variety of responses. Some manufacturers say their inks should never be exposed to dry mounting temperatures and I know other picture framers who claim to have never had a problem dry mounting digitals.
I hear your frustration. I can't believe with the digital age upon us, that there isn't a clear cut answer to your question, but as I said earlier, look at the complexities of the digital age and that is why the question is difficult to answer.
I don't know the sizes of your pictures, but consider cold mounting. If you insist on dry mounting, talk to local picture framer, use your own trial and error, do your own research, but be sure! Beinfang makes a tissue called "Clearmount". THEY CLAIM it is specifically formulated for dry mounting certain inkjet papers and pigmented inks?? Keep in mind, digital should be dry mounted at a low temp and min. amount of required dwell time and pre-drying will remove moisture.
Sorry I can't be of more help. Good luck. Let me know how things go.