Reduction of Formaldehyde in Wood Boards by means of Oriented Particles’ Improvement.

Abstract

There was demonstrated that chemical additives, introduced in wood boards, non effectively inhibit formaldehyde emission from finished goods under its long-term operation. Work objective is reduction of formaldehyde emission in wood boards from large size oriented strand boards (OSB) by means of quality improvement of orientation in disk setup. For the first time represented relationship of orient disks’ angular velocity, under which angle of dispersion of wood particles decreased by 7,50, that allows reduce formaldehyde content by 30 % under permanent bending strength of boards in the direction of orientation. There was presented structure of systems, allowing automatically realize given relationship.