The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1978
Filed:
Apr. 21, 1977
Frederick L Brown, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
Veneer is dried by passing a veneer sheet by at least one set of spaced orifices or nozzles through which jets of superheated organic solvent vapor are directed against one or both of the bottom and top sides of the sheet. After impinging on the wood surface, the spent solvent vapor plus moisture and other volatile substances from the wood passes to a condenser where the solvent is separated and passed to a vaporizer and superheater for recycle to the process. In an optional variation, a preliminary extraction of the entering veneer by condensing solvent is achieved by adjusting the flow rate or temperature of the solvent vapor in the fore part of the drying apparatus. Apparatus for carrying out the veneer drying process with means for recovering and recycling spent solvent is shown.