METHOD OF PRODUCTION OF CHIP WOOD BOARDS Russian patent published in 1994 - IPC

FIELD: woodworking industry. SUBSTANCE: in production of chip wood boards use is made of polyurethane binder, including a mixture of polyesters, foam stabilizing agent, frothing agent, and phenyl propionic acid in amount of 1 to 4.0 parts by mass and polyiisocyanate in amount of 170 to 180 parts by mass as Д-α amino-b at the following relation of ingredients, parts by mass: crushed wood - 100, foamed polyurethane binder - 10 to 40. EFFECT: facilitated procedure. 1 tbl