Method of wet-forming mineral fiberboard with formation of fiber nodules
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United States of America Patent
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Mar 27, 1990
Grant Date -
N/A
app pub date -
Jun 23, 1988
filing date -
Jun 23, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of producing an acoustical mineral fiberboard comprising (a) forming an aqueous slurry of mineral fiber-containing solids suitable for forming an acoustical board, the solids content of the slurry being sufficiently high to bring about predominant formation of nodules of mineral fiber throughout the slurry upon mixing of the slurry; (b) mixing the slurry to form the nodules of mineral fibers; (c) dewatering the slurry to form a wet felt; (d) drying the wet felt; and (e) texturing one surface of the dried felt without mechanically punching holes in the surface.
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