Do you know who the shops are that do face mounting on museum glass? I've asked the people I use in Wilmington DE to do it for me and they don't want to even try as they are sure the glass will break going through the laminator. What do they back it with?
We're just getting it setup in my shop and have mounted about 10 prints, both Kodak Metallic (traditional chemical paper) as well as Moab's new metallic inkjet paper to several types of glass. We are using optically clear double sided adhesive and are bringing in Fuji Crystal Archive Pearl and may even try some Fujiflex.
As long as the rollers of the laminator are clean the pressure of the rollers doesn't seem problematic. I"ve experimented with increasing pressures and so far haven't broke a piece of glass yet, and I normally make 3 to 5 passes of the glass through the rollers at greater pressure than when I'm mounting to a board or applying laminating film.
My biggest challenge is to get a "perfect" mount without any "silvering" (caused by small bubbles). Currently I'm using a manual laminator and lose control of the print for the last inch trying to turn and control things at the same time, so I end up with a few minor spots (you have to look very hard to see them) . I've shown them to many customers and none of them feel they are unacceptable but I want them perfect. We are just getting ready to order a wide enough laminator to do large prints and it will be motorized so I think I can maintain control without the last inch "flipping" onto the adhesive.
It's hard to keep things perfectly clean, but so far the few small specs of dust are almost impossible to see.
If they are afraid of breaking the glass (it isn't as fragile as you might think) you can also get "museum" acrylic
, same anti reflective quality's.