Process and device for producing multilayered,...

Details Process and device for producing multilayered,... Process and device for producing multilayered,...

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B28B 1/52 (2006.01) B28B 5/02 (2006.01) B28B 7/46 (2006.01) B28B 13/02 (2006.01) B28B 17/02 (2006.01) B28B 19/00 (2006.01) C04B 11/00 (2006.01) C04B 11/26 (2006.01) C04B 18/24 (2006.01) C04B 28/14 (2006.01)

Patent

CA 2116132

2116132 9303899 PCTABS00020 Fibre-reinforced plaster plates are produced in a multi-layered continuous filtration process. A suspension of plaster and wet processed fibres, preferably from used paper, is dewatered on at least two travelling screens. At least two layers are produced in essentially identical filtering units that work in opposite directions. The layers are then reversed so that their top surfaces face each other. When three layers are processed, the central layer may be composed of a dispersible, binder-containing material. Several devices and process configurations are disclosed.

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