Patent ID: 7794508
Filing Date: 2010-09-14
Classification: B27M,B32B,B44C

Abstract:
1. A method for producing a colored gluelam bamboo timber article, the method comprising: providing a stalk of bamboo; splitting the bamboo stalk into strips; removing the tabasheer and bamboo rind from said bamboo strips; steaming the bamboo strips; dyeing the steamed bamboo strips under pressure; drying the dyed bamboo strips; planing the dried bamboo strips into a finished plane form; and, laminating the finish plane form bamboo strips together with an adhesive to form a gluelam bamboo timber article; wherein the dyeing of the steamed bamboo strips comprises: placing the steamed bamboo strips into a dyeing tank; forming a first vacuum of about −0.01-−0.1 MPa in the tank; maintaining the first vacuum in the tank for a selected period of time; using the vacuum in the dyeing tank to suction dyeing liquor into the tank until the tank is filled; pressurizing the dyeing tank to a pressure of about 1.0-2.5 MPa; holding the pressure in the tank for a selected period of time; reducing the pressure in the dyeing tank to atmospheric pressure; pumping the dyeing liquor from the dyeing tank; forming a second vacuum of about −0.01-−0.1 MPa in the dyeing tank; maintaining the second vacuum in the tank for a selected period of time; and, removing the dyed bamboo strips from the dyeing tank.