Abstract
The main objectives of this study were to investigate the use of polymeric MDI (P-MDI) with recycle chips from a used particleboard to a new one again. Using melamine-urea-formaldehyde resin (MUF) and replacing 20% of wood chips by the recycled-chips, the bending strength of PB decreased 26% from that of the original.
But using P-MDI, the lowering of board characteristics was depressed comparing with the PB made with MUF resins.
The P-MDI-based PB with formaldehyde-catching additives showed a formaldehyde emmission of 0.3mg/l, and was classified as JIS-EO grade.
