Babcock Bsh Aktiengesellschaft

Babcock-bsh Gmbh

Ingo Grebe

Walter Munch

Friedrich Roos

Helmut W&uuml;nsche

Johannes Bolz

A method and apparatus for drying veneer wherein the feeder upstream of the drying station displaces the veneer at different speeds on the right and left sides of the transport path of the veneer as seen in the direction of transport so as automatically to impart an inclined orientation of the veneer of 20&deg; to 60&deg; to a line perpendicular to the transport direction before the veneer reaches the drying station. In the drying station and the cooling station the veneer retains this inclined orientation and in these stations the veneer is subjected to multiple rerouting or the application of pressure.

Method for drying veneer and corresponding drying device

A drying apparatus for sheets of sliced veneer has two conveyor belts lying one above the other running together jointly around a partially curvilinear, looped path guided by a plurality of guide apparatuses, the belts being positioned so that the sheets may be inserted between the belts for transport in a direction transverse to their widths, wherein the conveyor belts run rectilinearly between at least two of the adjacent guide apparatuses for a distance at least equal to half the maximum width of the sheets fed between the belts. The guide apparatuses may be rotatable cylindrical structures, for example rollers or cylinders, whose axes of rotation preferably all lie in the same horizontal plane. These rotatable cylindrical structures may be provided with brakes, drying and heating units as well. Furthermore the drying apparatus provides a velocity difference between the belts of from 2% to 5% and the belts passing between adjacent pairs of rollers are inclined at angles from 30.degree. to 75.degree..

Drying apparatus for sliced veneer

A continuously operating multistage drying installation is provided for drying a workpiece. The drying installation includes a conveyor belt for transporting along a predetermined path a workpiece having two opposite longitudinally extending surfaces and containing excess moisture. A first stage drier is located at an upstream portion of the path. This drier includes guide rollers for turning the workpiece over at least once so as to expose both of its surfaces to heat within the drier to thereby preliminarily dry the workpiece. A second stage drier is provided at the path downstream of the first stage drier for finishing the drying of the workpiece to a desired moisture level while maintaining the workpiece free from being turned over to thereby avoid cracking the surfaces of the workpiece due to pressure applied to the demoisturized and consequently relatively brittle surfaces thereof. A process is also provided for continuously drying the workpiece while avoiding pressure on the surfaces of the workpiece during the final drying stage.

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Neuenstein, Germany

Ingo Grebe