... density fiberboard (MDF) industry because of their low cost and Urea-formaldehyde (UF) resins are dominantly used in the medium density ... resin is a none-transparent thermosetting or plastic, made from urea and formadehyde heated in the presence of a mild base ... resins are used in adhesives, finishes, MDF, and molded objects. Urea-formaldehyde resin's attributes include high , flexural modulus and heat ...