Diboride coated pressing surfaces for abrasion resistant...

C - Chemistry – Metallurgy – 23 – C

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C23C 14/16 (2006.01) B30B 15/06 (2006.01) C23C 14/06 (2006.01)

Patent

CA 2213288

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. Mailed 8128196 U.S. Express Mail GB829921829

Plaque machine pour la production de laminé décoratif à partir de papier imprégné de résine, avec particules d'alumine sur la surface de pressage. Pour la rendre résistante aux rayures, la plaque est revêtue de diborures choisis parmi les suivants : diborure d'hafnium, diborure de molybdène, diborure de tantale, diborure de titane, diborure de tungstène, diborure de vanadium, diborure de zirconium ou leurs mélanges. On privilégie les diborure de titane et de zirconium, et particulièrement le diborure de titane. La couleur, le brillant et l'apparence d'un laminé pressé à l'aide d'une plaque revêtue de diborure de titane sont pratiquement les mêmes que ceux d'un laminé pressé avec la plaque avant revêtement.

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