What type of adhesives are use on PET, TPU, and Glass screen protectors?

I'm wondering what type of adhesives are used to adhere screen protectors to the cell phone display. Maybe we can use some of strong, yet removable adhesives to help stick the screen protectors to the curved edges of the Galaxy S7 Edge. Then we can use whatever case we want and not worry about peeling edges.

Anyway, my question is about the types of adhesives used for this application.

Thanks!