Composite fiberboard and process of manufacture
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 28, 1992
Issued Date -
N/A
app pub date -
Oct 1, 1990
filing date -
Nov 25, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A novel composite board of mineral wool, perlite, and cellulosic newsprint fibers for use primarily as a ceiling tile is disclosed. The board displays virtually no sag (less than 200 mils) when exposed to high temperature and high humidity while displaying quite acceptable strength. The board is manufactured by selective deposition of a composition of latex and extender particles on the cellulosic newsprint fibers.
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