Patent ID: 6696102
Filing Date: 2004-02-24
Classification: B27K

Abstract:
A process for treating a charge of cellulose material with a predetermined concentration of preservative and a fluid in a mixture comprising the steps of heating the mixture to about 180Â° F., placing the charge of cellulose material in a vacuum of at least 27 inches of mercury, applying the mixture to the charge of cellulose material within said vacuum, then subjecting the mixture to a pressure of about 250 pounds per square inch to enable at least some of the preservative in the mixture to be absorbed within the charge of cellulose material, thereby depleting the concentration of the preservative in the mixture, repeatedly replenishing the preservative depleted mixture with more preservative to reestablish approximately the predetermined preservative concentration in the mixture, heating the replenished mixture to about 180Â° F., agitating the preservative and the fluid, and continuously circulating said replenished mixture under pressure to the same charge of cellulose material that is being treated.