Acoustical mineral fiberboard
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United States of America Patent
Stats
-
Dec 10, 1991
Issued Date -
N/A
app pub date -
Feb 23, 1990
filing date -
Jun 23, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rigid, self-supporting, acoustical mineral fiberboard comprising a mixture of about 50 to 70 weight percent of mineral fibers, 15 to 35 weight percent of perlite, 1 to 10 weight percent of cellulosic fibers, and 4 to 15 weight percent of a binder with the proviso that the board forming solids do not include any clay filler. A pattern is formed on the fiberboard after the fiberboard has been dried.
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Cited Art Landscape
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