A solution for recycling and capitalization of the recovered melamin laminated particle boards should be found with minimum intervention by possibly refinishing them. For this study a 30 years old particle board was selected. Due to its damaged surface aspect the following objectives derived: finding opaque finishing techniques for the recovered PB and methods of finishing with special effects with minimal energy consumption. For the study of special effects finish on recovered PB a colouring technique of the applied paint by pigment layering was considered. The tested substrate was the unfinished PB. As a base coat KEIM Quarzil silicate based interior paint was applied, and Kremer and Sennelier mineral pigment mixed with a part KEIM Spezial-Fixativ pure liquid potassium silicate based thinner and a part water was used for obtaining the colours. The study of the colouring method by pigment layering resulted in four deep and textured pastel colours: bluish brown, greenish sand, deep pink, greenish blue. This research shows that refinishing recovered PB with wall paint in different colours obtained by techniques adopted from interior design can be a sustainable and ecological way to recycle by reuse.
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