FIELD: procedure of manufacture of slabs without any binder, used as facing-decorative, heat-insulating and structural material in the industrial, construction and agricultural engineering, furniture industry, etc. SUBSTANCE: the method consists in hot molding at temperature of 140 to 220C and pressure of 2.5 to 30.0 MPa of granulated mass of woodworking waste or waste of vegetable origin, preliminarily treated by acid aqueous solution heated to a temperature of 90 to 160C with addition of a neutralizing agent or water repellent. EFFECT: simplified procedure of production of slabs, essentially enhanced their water repellent properties. 3 cl, 2 tbl, 1 ex
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