Diboride coated pressing surfaces for abrasion resistant laminate and making pressing surfaces
AssigneePremark RWP Holdings, Inc.
InventorsMuyuan M. Ma, Jay T. Oliver
Life of this patent
Estimating the term…
Abstract
A press plate for producing decorative laminate from resin impregnated paper, with alumina particles on its pressing surface, is coated with diborides selected from the group consisting of hafnium diboride, molybdenum diboride, tantalum diboride, titanium diboride, tungsten diboride, vanadium diboride, or zirconium diboride or mixtures thereof for making the press plate resistant to scratching. The preferred diborides are titanium and zirconium. The most preferred diboride is titanium. The color, gloss and surface appearance of laminate pressed with a titanium diboride coated press plate is substantially the same as laminate pressed with the press plate before coating.
Claims12
A method of making a planar pressing surface for producing decorative laminate from resin impregnated paper, comprising:
- imparting a desired finish on a planar pressing surface;
- removing contaminants from the planar surface;
- and
- coating the planar surface with diborides selected from the group consisting of hafnium diboride, molybdenum diboride, tantalum diboride, titanium diboride, tungsten diboride, vanadium diboride, or zirconium diboride or mixtures thereof in a planar magnetron sputter coating system to a Vickers hardness of at least 2000.
A method of making a press plate having planar pressing surfaces for producing decorative laminate from resin impregnated paper, comprising:
- imparting a desired finish on the planar pressing surfaces;
- removing contaminants from the pressing surfaces;
- and
- coating the planar surfaces with titanium diboride to a Vickers hardness of at least 2000.
Dependencies are inferred from the claim text.