FIBERBOARDS AND PROCESSES FOR THE PREPARATION THEREOF

摘要

A fiberboard or a similar wood-based product containing lignocellulosic fibers which are bonded together in the presence of an inorganic salt having a multi-valent metal cation and in the absence of a synthetic polymeric resin to form a compressed product having a density of at least 750 kg/m<3> and a process for the manufacture thereof. According to the invention, the fibers comprise refining chips of a hardwood tree species which are bonded together using an Fe(III) salt as the inorganic salt and mixing the salt with the fiber material in an amount sufficient to provide a concentration of Fe(III) ions in the compressed product of at least 0.3 wt-% calculated from the dry fiber matter. The boards according to the invention By using iron (III) salts, good bonding strengths are obtained without the use of traditional synthetic polymeric resins.