PROCESO PARA FORMAR PANEL DERIVADO DE MADERA DE BAJAS EMISIONES DE FORMADEHIDO QUE COMPRENDE APLICAR A UNA SUPERFICIE EXTERNA DEL PANEL UNA COMPOSICION DE RESINA QUE CONTIENE UN PRODUCTO DE CO-CONDENSACION DE UNA RESINA DE COMPUESTO DE HIDROXILO AROM

摘要

Low formaldehyde emission wood based panels are described. These wood based panels have an outer surface layer comprised of a resin composition comprising a naturally occurring component or derivative thereof which is chemically bound to an aromatic hydroxyl compound-aldehyde resin (ncPF). The advantages of having an outer surface layer of the resin composition comprising ncPF, is that the outer surface layer can act as a surface sealer to reduce migration of components from the core of the wood based panel to the surface. The outer surface layer is pleasing to the consumer because it forms light colored faces on the wood based panel. It is also a superior surface for after treatment, such as for example, painting, when compared to amino or phenol resins. In addition, the outer surface layer comprising the inventive resin composition comprising ncPF can lend added fire-retardancy to the wood based panel.