DIBORIDE-COATED PRESSING SURFACES FOR WEAR-RESISTANT LAMINATED PLASTIC AND MANUFACTURING PRESSING SURFACES Russian patent published in 1999 - IPC

FIELD: manufacture of building materials. SUBSTANCE: plate of press for fabricating decorative laminated plastic made from resin-impregnated paper has flat pressing surfaces coated with diborides of hafnium, molybdenum, tantalum, titanium, tungsten, vanadium, or zirconium, or their mixtures. Flat pressing surfaces are first cleaned and then coated using planar magnetron spray technique until Vickers hardness at least 2000 is achieved. Coating thickness ranges from 3 to 6 mcm. EFFECT: completely preserved color, brilliance, and appearance of presses plastic. 21 cl, 5 tbl