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US 5,942,008 AGranted
Method of dyeing wood veneer at elevated temperatures and pressures
OwnerCalogero Curtoinventor
Life of this patent
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Abstract
The present invention relates to a method for dyeing wood veneer. The veneer is immersed in a dye bath. The dye is preferably heated to speed up penetration times. The dye bath containing the veneer is then put into pressurized chamber and pressurized to 50-500 psi. The chamber is pressurized until the wood absorbs the amount of color that is desired. When the color is absorbed the pressure is released and the veneer is removed. The veneer is then washed with water until there is no bleeding and then air dried.
Claims6
A method of coloring wood veneer comprising the steps of:
- (a) heating to about 70.degree. to 90.degree. C. an aqueous/alcohol solution of two parts by volume water and one part by volume methanol and containing a dye synthesized from benzenoid hydrocarbons obtained from coal tar or petroleum;
- (b) placing a strip or strips of veneer in the heated solution of dye;
- (c) placing the veneer and solution of dye in a pressure vessel at from 50 to 500 psi until the dye penetrates through said veneer;
- (d) removing the colored veneer from the pressure vessel and washing to remove any excess dye solution, and
- (e) drying the veneer.
2 more elements
Dependencies are inferred from the claim text.