The introduction of laser-based 3D scanning technology enables the automatic determination of particle dimensions, surface area and volume. In the present study, the influence of particle size on the mechanical properties of particleboard was investigated. In order to exclude potentially overlapping influences, single-layer boards with a homogeneous density profile were produced and analysed. The surface-specific adhesive amount was kept constant for (fine) face layer particles and (coarse) core layer particles using 3D scanning to ensure comparability despite variation in particle size. With increase in particle size, an increase in modulus of rupture and modulus of elasticity was found. The opposite was found for the internal bond strength. Furthermore, all of the properties mentioned increased with an increase in the surface-specific adhesive amount. Examples are used to show how these fundamental relationships can be used to optimize the particleboard production process.
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