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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Oct 16, 1990
Issued Date -
N/A
app pub date -
Nov 15, 1989
filing date -
May 24, 1989
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, or product without mineral wool or perlite, is manufactured by selective deposition of a latex composition on the cellulosic newsprint fibers.
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