Verfahren und Vorrichtung zur Herstellung von Formkörpern aus zerkleinertem Material

摘要

A particle board, a fibre board or an OSB (oriented strand board) (25) is formed from a cellulosic material to which a radiation settable binder has been added. The method of the invention involves first forming a diffusion layer (4) that undergoes a final compression in a press (16), and where relevant, a pre-compression in a prepress (5), and followed by sudden setting of said layer (4) by means of an electron bombardment device (22). Unlike the known manufacturing method, using a thermosetting binder, the inventive method is hindered neither by heat transfer to the centre of the boards nor by a non homogeneous humidity profile. The risk of board splitting is avoided so that high quality boards may be produced at a high yield. Unlike the known manufacturing method using a thermosetting binder, these boards require no conditioning storage.