Method for drying veneers

Drying and gas or vapor contact with solids – Process – Gas or vapor pressure is subatmospheric

Reexamination Certificate

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Reexamination Certificate

active

07383643

ABSTRACT:
An apparatus and method is provided to dry veneer or other items by vaporization of moisture in the item. Apparatus has an insulated chamber with a frame and a drawer with a door. A mesh surface of the drawer supports item for drying with a heater at sub-atmospheric pressure inside of the chamber. Item is placed on the layer of mesh of the drawer of the apparatus and secured with fasteners such as another layer of mesh. The drawer with fastened item is placed into the chamber of the apparatus. With the drawer fully engaged within the chamber, the drying apparatus is closed with an airtight seal. A pump draws a vacuum in the chamber and heat is directed at the item to raise the temperature of the item to less than 160° F., particularly between 120° F. to 150° F. Apparatus can dry veneer in less than five minutes.

REFERENCES:
patent: 3271874 (1966-09-01), Oppenheimer
patent: 3474544 (1969-10-01), Holden, Jr. et al.
patent: 4146973 (1979-04-01), Steffensen et al.
patent: 4215489 (1980-08-01), McMahon, Jr.
patent: 4428128 (1984-01-01), Coulson et al.
patent: 4439930 (1984-04-01), McMahon, Jr.
patent: 2005/0230639 (2005-10-01), Ancona et al.

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