Composite fiberboard and process of manufacture

Details Composite fiberboard and process of manufacture Composite fiberboard and process of manufacture

1990-10-01

1992-07-28

Nutter, Nathan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 35, 524401, 524425, 524437, 524438, 524443, 524445, 524492, 524493, 524494, 524497, 162145, 162146, 162147, 162152, C08L 8900, C08K 334, C08K 340, D21F 1100

Patent

active

051341794

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.

REFERENCES:
patent: 3344107 (1967-09-01), Miller
patent: 3418268 (1968-12-01), Hedrick et al.
patent: 4963603 (1990-10-01), Felegi, Jr. et al.
Stepek et al., Additives for Plastics, Springer-Verlag, New York, 1983, pp. 70-84.

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