Paper making and fiber liberation – Processes and products – Article forming processes
Patent
1979-08-20
1981-12-22
Chin, Peter
Paper making and fiber liberation
Processes and products
Article forming processes
162181C, 162218, D21J 312
Patent
active
043069355
ABSTRACT:
A method of manufacturing sheet form insulation products from an aqueous slurry containing calcium silicate comprises the steps of pumping the slurry into a closed mould cavity in a platen filter press, at least one wall of the mould cavity being foraminous to an extent sufficient to allow the escape substantially only of fluid, stopping the pumping at a predetermined level of back pressure in the mould cavity, followed by closing the press to reduce at least one dimension of the mould cavity a prechosen amount.
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Chin Peter
Drucker William A.
Newalls Insulation Company Limited
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