How to improve ink formulation? It gets damaged when adhesive is applied on top of it

Hi Everyone,

I need to optimize my flexo laminating ink formulation because everytime that I apply the adhesive on top of it you see it redissolves the ink too much. I think it has to do with the Ethylacetate that is present in the adhesive solution.
I understood that adding some PVB in the letdown could work, but my first tests were not succesfull. Any tips?

Thanks in advance.