Paper impregnation is the fundamental passage through which amino-resins like urea-formaldehyde and melamine-formaldehyde are applied on decorative paper and overlay.
Perfect saturation and coating of the paper are reached using the appropriate resin in combination with some needful additives like hardeners, wetting and release agents.
An optimization of the application frequently requires for some special additives like for example anti-blocking, anti-dust, plasticizers, anti-scuff and others.