Dimensional Stability of Particleboard

This study investigates, on a theoretical basis, lateral dimensional stability of particleboard. The mathematical treatment is confined to flat-pressed boards where the fiber direction of the individual particles is assumed to be in the plane of the finished panel. Results obtained from the derived equation for dimensional stability are compared with published experimental results. It is concluded that changes in the lateral dimensions of a platen-formed particleboard with changes in moisture content can be accounted for mathematically through considerations of particle interactions and basic properties of the individual wood pieces. Thus the equation for dimensional response can be used not only to determine the effects of various treatments, but it also provides an analytical means for selection of species that will produce boards of superior dimensional stability.

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