Developments in vacuum drying and press drying of
Developments in vacuum drying and press drying of
Developments in vacuum drying and press drying of
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Center for<br />
Forest Products<br />
Pr<strong>of</strong>. Dr. Ressel<br />
Introduction<br />
Fundamentals<br />
Plant Facilities<br />
Innovations<br />
Process<br />
Technology<br />
Plant Examples<br />
Brunner<br />
IWT<br />
Mühlböck<br />
Kronseder<br />
Eberl<br />
Opel<br />
HeatWave<br />
Press Dry<strong>in</strong>g<br />
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Press Dry<strong>in</strong>g - Process Technology<br />
Process characteristics <strong>and</strong> advantages<br />
(accord<strong>in</strong>g to Arboreo Technologies Ltd. / FIN)<br />
• Rapid dry<strong>in</strong>g process<br />
• Less cracks, warp<strong>in</strong>g <strong>and</strong> cupp<strong>in</strong>g<br />
• Due to <strong>press</strong><strong>in</strong>g the timber stays / becomes straight<br />
• Hardness <strong>in</strong>creases by 11 ... 18 %<br />
• Strength properties improve by 15 ... 33 %<br />
• More resistant towards rott<strong>in</strong>g<br />
• Moisture expansion reduced up to 2,7 times (Spruce)<br />
• Net material sav<strong>in</strong>gs 15 ... 20 % due to higher net<br />
recovery <strong>and</strong> m<strong>in</strong>imized dry<strong>in</strong>g defects
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