Method for the debarking of logs
AssigneeKone Corporation
InventorsLiisa Viikari, Marjaana Ratto, Anne Kantelinen
Life of this patent
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Abstract
A method for the debarking of logs is disclosed, which comprises treating the logs with enzymes to weaken the bonds between the bark and wood. An apparatus is also disclosed for the debarking of logs, comprising a conveyor for conveying the logs to a debarker, a piping system with nozzles for spraying the logs with an enzyme solution, a device for separating the enzyme solution from the logs and conducting it back into the piping system, and a feed device for supplying enzyme solution into the circulation system.
Claims25
A method for the debarking of logs comprising the treatment of the logs with an enzyme solution in order to weaken the bonds between the bark and wood, followed by mechanical debarking of the logs.
An apparatus for the debarking of logs, comprising a conveyor for conveying the logs to a debarker;
- a piping system for carrying an enzyme solution;
- nozzles for spraying the logs with the solution;
- separating means for separating the enzyme solution from the logs and conducting it back into the piping system;
- and a feed device for supplying fresh enzyme solution into the circulation system.
The use of enzymes in the debarking of logs to weaken the bonds between the bark and wood, the enzymes being selected from the group consisting of pectinases, hemicellulases, cellulases and proteases.
Dependencies are inferred from the claim text.