I have a roll top Dyneema dry bag and really like it due to how dry it keeps my down jacket, hood, and booties. I want to extend the same protection to my sleep system. I found two down side with the roll top bags, one is that it traps a ton of air and the seconded is the hook and loop at the top of the bag can mess up lighter denier fabrics. I want to make a pack liner that I can just squeeze the air out quickly and still block out water. I figure if I get a one way air valve and place it near the bottom this will solve my first world problem of too much air in my pack liner. My question is, what would be the best way to install a one way air valve on to Dyneema. Is there a glue that would work on the fabric and the valve and keep it water proof? I have seen glues for Dyneema to Dyneema, but not any information on how that glue will react to other plastics. I guess I should also ask if it is even reasonable to do such a thing, too.

Thanks for your time and thoughts,
Redrum