EFFECT OF VENEERING MODE ON THE ROUGHNESS OF CHERRY (PRUNUS AVIUM L.) VENEERED MEDIUM DENSITY FIBERBOARDS.

The veneering process significantly affects the roughness of the furniture elements. The article investigates the effect of the veneering mode on the roughness of cherry (Prunus avium L.) veneered wood medium-density fiber boards (MDF). Different veneering regimes were carried out with controllable variation of the mode factors temperature and pressing pressure. For this purpose, a two-factor experiment was performed with a change in temperature of pressing from 80 to 200°C and pressure from 0.07 to 0.19MPa. Before venneering process, the veneered surfaces are sanded with P150 sandpaper. The values of basic roughness parameters were measured after each technological treatment, in the same evaluation lengths. Based on the results, graphical dependences between the roughness of the veneered boards and the basic mode parameters are presented. The press pressure does not significantly affect the roughness of the veneer. The combination of high temperature and high press pressure reduced initial surface roughness by 16%. [ABSTRACT FROM AUTHOR]