| 摘要 |
The invention regards a forming box for use in dry-forming a mat of fibrous material, said forming box comprising a housing with an open bottom for providing direct access of the fibres onto an underlying forming wire and a vacuum box underneath said forming wire,at least one inlet for supplying fibre material into the inside of the housing, a number of spike rollers are provided in at least one row in the housing between the fibre inlet and the housing bottom,wherein a screen is provided adjacent said spike rollers, said screen comprising a plurality of slats, wherein each slat is rotatable. |
