| abstract |
The invention relates to paper substrates comprising vapor deposited triazine, the amount of crystalline triazine being about g/m2 or higher, and about 100 g/m2 or lower. The invention also relates to a process for making a laminate comprising at least one cured layer of melamine-formaldehyde resin and a paper, wherein a) triazine is deposited on paper with vapor deposition, to obtain a paper substrate comprising vapor deposited triazine, b) the triazine-deposited paper is either impregnated with a formaldehyde solution, or a melamine formaldehyde resin having an F/M ratio of 1.5 or higher, or the triazine-deposited paper is laid adjacent to an impregnated sheet with a melamine formaldehyde resin having an F/M ratio of 1.5 or higher, or b') one or more layers of said triazine-deposited paper are laid in a press, together with one or more other layers to have a stack of papers, and formaldehyde is injected into the press c) in such amounts that the composite F/M ratio is 1.6 or lower d) submitting the paper with one or more other layers to pressure and/or sufficient temperature to cure the triazine and resin. |