Method for manufacturing hybrid plywood and hybrid plywood

Abstract

In the hybrid plywood production method, in which, according to an embodiment of the invention, large surfaces of a wood-based board (1) are joined to veneer surfaces (2), birch veneers are initially selected during the veneer preparation process. 1.5 mm thick birch veneers are selected, retaining a rectangular surface characterized by an excess of 5 cm in length and 5 cm in width compared to the expected final board dimensions. The veneers thus prepared are brought to a moisture content ranging from 3% to 6%. A wood-based construction panel (MFP) is used as the wood-based board (1). Two sheets of birch veneer are applied as the veneer (2), in a crisscross pattern, to each large surface of the wood-based board (1).On the surfaces of birch veneers placed inside the stack forming the hybrid plywood, glue in the amount of 170 g / m2 is applied on both sides using gluing rollers, and the stack prepared in this way is transported to a cold press, where it is compressed for 11 minutes using a pressure of 20 MPa, after which the stack is transported to a hot press, where it is pressed at a temperature of 127°C and a pressure of 15 MPa for 8 minutes.