Process for coating hardboard

Details Process for coating hardboard Process for coating hardboard

B - Operations, Transporting

05

D

117/98

B05D 3/00 (2006.01) B05D 7/04 (2006.01)

Patent

CA 1221883

ABSTRACT OF THE INVENTION A process for treating wood substrate, including textured hardboard having surface irregularities consisting of high ridge areas protruding above the surface, with a low viscosity aqueous coating to produce a coated article having substantially uniform film thickness. A substantially uniform film can be obtained by preheating the substrate (about 250 to 400°F), flooding the surface with the aqueous coating, partially dewatering and affixing the coating to the surface by coalescence and removing the excess coating. It is necessary to critically control the substrate temperature and time in which the coating remains in contact with the heated substrate before the excess coating is removed using an air knife.

466828

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