Adhesive bonding and miscellaneous chemical manufacture – Methods – Plaster board making
Patent
1991-08-13
1993-10-26
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Plaster board making
156 45, 156346, 106631, 106698, B32B 3106, C04B 1418
Patent
active
052562220
ABSTRACT:
A lightweight wallboard having a density in the range of 10 pcf to 30 pcf and comprised of a faced layer of expanded siliceous inorganic particles, such as expanded perlite, bonded together by inorganic binder, such as sodium silicate. The board is made by depositing a mixture of particles, binder and water onto a moving web of facing material, contacting the mixture with an upper moving web of facing material, compacting the mixture to the desired shape and density and drying the resulting board. Fire resistant and water repellent versions of the formula are also disclosed.
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Dolin Rick L.
Shepherd Philip B.
Ball Michael W.
Maki Steven D.
Manville Corporation
Quinn Cornelius P.
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