Production method for improving peel strength of composite board bonded by solvent type binder layer

The invention belongs to the field of composite material production, and discloses a production method for improving the peel strength of a solvent type binder layer bonded composite board, in the production method, passivated base metal is coated with a base metal liquid binder layer, and multi-layer metal is not coated with a multi-layer metal liquid binder layer. In the heating process, a base metal scabbing and drying layer is formed, the thickness of a wet film can be effectively controlled by coating the base metal scabbing and drying layer surface on the base metal with a binder layer for the second time, at the moment, heat transfer is conducted through heat stored in the base metal, and the heat transfer efficiency is improved. The base metal scabbing and drying layer and the secondary coating binder layer wet film with the solvent are fully reacted, heat transfer and solvent volatilization are further realized, and after being heated, the multi-layer metal effectively reacts with the secondary coati