Why is Cryogenic processing better for rubber granules used for molded products than ambient processing? It's cleaner!
Cryogenic processed materials are easier to clean and therefore less likely to be dirty. Obviously, adhesives will stick much better to clean material.
Ambient processing often creates a nuisance dust (after knives lose their edge) that is very difficult to remove from your rubber granules
Using dirty rubber for a molding operation is like painting your house without scraping and washing it first.