That's One reason Kevlar doesn't work for Squat for a bond
on Nomex-Honneycomb !
But on a honneycomb you always have a real problem with bondage of the two exterieur layers, regardless of the sort of laminate.
I'm still very surprised that they use it in boatbuilding. If you have followed the last Volvo ocean races, you certainly have seen the complete delaminated panels on the Imoca boats (all with honeycomb sandwhich core).
We in Holland have tried this honeycomb cores already 20-25 years ago in our surfboardconstructions. As editor of a surfboardmagazine in those days,I have tested prototypes with honeycomb. That was a disaster; they were all jumped to pieces!
