Plywood is one of the most widely used wood-based product in the world and mainly produced from silver birch (Betula pendula Roth) tree. It is constructed by combining layers of veneers with using glue as a binder. For sustainability and to improve properties like bending strength, weight, density and glue consumption amounts, finding alternatives to this wood specie and reducing glue consumption is of vital importance for plywood industry and considering also the environ-mental impact of product. Currently information about alternative species and effect of veneer thickness on plywood properties are not investigated enough. In plywood production the mostly common species like birch, spruce, poplar and pine are used because of their abundancy. In this research, the performance of plywood produced from aspen and black alder veneers and plywood from different veneer thicknesses were compared to plywood from birch.
Keywords: veneer, plywood, aspen, birch, black alder, bending strength, modulus of elasticity, modulus of rupture, veneer thickness, combination, glue consumption, lay-up
Authors
Tolgay Akkurt
Department of Materials and Environmental Technology, Tallinn University of Technology, Estonia
Jaan Kers
Department of Materials and Environmental Technology, Tallinn University of Technology, Estonia
Heikko Kallakas
Department of Materials and Environmental Technology, Tallinn University of Technology, Estonia
Anti Rohumaa
Department of Materials and Environmental Technology, Tallinn University of Technology, Estonia
Percy Festus Alao
Department of Materials and Environmental Technology, Tallinn University of Technology, Estonia
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