| 摘要 |
The invention relates to methods for manufacturing lightweight building boards ( 1 ) starting from a workpiece ( 2 ) which comprises two thin-walled cover layers ( 4, 6 ) and at least one core layer ( 8 ) which is disposed between the cover layers ( 4, 6 ) and is made of a light filling material, the at least one core layer ( 8 ) possessing cavities and having a lower average density than the cover layers. The method comprises the following steps: forming in the workpiece ( 2 ) at least one groove ( 10 ) which extends through at least one first cover layer ( 4 ) and at least partly through the at least one core layer ( 8 ) and circumscribes at least a portion of a contour of the lightweight building board ( 1 ) to be manufactured; introducing a hardenable mass ( 12 ) into the at least one groove ( 10 ); at least partly hardening the hardenable mass ( 12 ); and making a separating cut along the at least one groove ( 10 ), so the at least partly hardened mass ( 12 ) is separated in the longitudinal direction of the groove.
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