Method of manufacturing fibreboard

Details Method of manufacturing fibreboard Method of manufacturing fibreboard

D - Textiles, Paper

21

J

19/18

D21J 1/00 (2006.01) B27N 3/04 (2006.01)

Patent

CA 1081426

METHOD OF MANUFACTURING FIBREBOARD ABSTRACT OF THE DISCLOSURE Method of producing fibreboard products according to the so- called dry method from lignocellulosic fibre material in which the fibre material discharged from a defibrating apparatus in an en- vironment of steam is propelled in a stream of heated air to re - move substantially all moisture therefrom. The thus dried fibres are deposited on an underlying moving perforated screen to form a mat in which the fibres are oriented at random while propellant air is evacuated therefrom. The thus formed mat is wetted by add- ing water thereto while it is being advanced by the screen into a hot press where the wetted fibres are compressed and bonded in their random orientation, with consequent removal of water. The amount of water added in the wetting step is porportioned to be effective in itself to bond the fibres.

287960

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