Adhesive bonding and miscellaneous chemical manufacture – Methods – Plaster board making
Patent
1984-09-19
1986-09-30
Page, Thurman K.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Plaster board making
156 43, 156 46, 264256, 264257, 264333, B32B 1300
Patent
active
046145532
ABSTRACT:
A method of manufacturing acoustic panels comprising the steps of pouring a solidifiable liquid into a container, placing a porous layer of material onto the solidifiable liquid, solidifying the solidifiable liquid into a rigid layer, and removing the rigid layer and the porous layer from the container. The container has at least one form member extending from the bottom of the container upwardly. This form member extends upwardly into the porous layer. The solidifiable liquid is a slurry of cement. The container and the form member are magnetically attractive. The form member has a generally tapered cylindrical shape and rounded edges. The porous layer is a fibrous material.
REFERENCES:
patent: 3084402 (1963-04-01), Jordan, Jr. et al.
patent: 3215225 (1965-11-01), Kirschner
patent: 3787546 (1974-01-01), Pratt et al.
patent: 4441580 (1984-04-01), Webster
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