| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to method and device for refining particle board. Method of refining particle board 2 with decorative finish on one of its sides comprises the following steps. (a) Cleaning particle board top and bottom surfaces. (b) Applying first top layer of pitch containing corundum particles on top surface and first bottom layer of pitch on bottom surface. (c) Drying top and bottom first layers of pitch to residual moisture of 3% to 6%. (d) Applying second top layer of pitch containing cellulose on top surface and second bottom layer of pitch on bottom surface. (e) Drying top and bottom second layers of pitch to residual moisture of 3% to 6%. (f) Applying third top layer of pitch containing glass particles on top surface and third bottom layer of pitch on bottom surface. (g) Drying third said layers to residual moisture content of 3%-6%, and (h) compacting layered structure at pressure and temperature.EFFECT: perfected procedure.14 cl, 3 dwg |
