COMPOSITION PLYWOOD PRODUCTION METHOD Russian patent published in 1995 - IPC

FIELD: forestry and woodworking industries. SUBSTANCE: during manufacture of composition plywood pack is formed from impregnated with fireproofing compound solution and dried sheets of veneer with interperpendicular location of fibres in adjacent sheets and vibration absorbing material. Odd number of sheets of veneer ( for example 3, 5, 7) is laid on each side of vibration absorbing interlayer. To produce sheets of veneer without glue layer on pack surface pitch is applied on both sides of even sheets of veneer. Decorating material is applied on outer sheet of veneer. Pack pressing is exercised by multispan hydraulic presses with forced cooling of plates. In the case both uniform and different number of veneer sheets may be located on each side of vibration absorbing interlayer. EFFECT: method is used in forestry and woodworking industries. 2 cl, 1 tbl