AUTOADHESION OF LAMINATED BOARDS FROM SCOTS PINE VENEERS: EFFECT OF OXIDATIVE PRETREATMENT.

This paper presents results from studies on the pre-treatment of veneers from Scots pine using hydrogen peroxide and a ferrous catalyst followed by pressing at 220, 230, and 240°C. The treatment gave boards that did not delaminate when exposed to water followed by drying of room temperature, whereas boards without a pre-treatment delaminated. The press-plate temperature did not influence the extent of delamination, but the thickness swelling was lower at higher press temperature. Analysis of extracts from the oxidative pre-treated and hot-pressed surface material using UV-spectroscopy was compared with analysis of bondlines from water-stable laminated boards from beech. [ABSTRACT FROM AUTHOR]