Composite fiberboard and process of manufacture

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

1989-11-15

1990-10-16

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, 524443, 524445, 524494, 162145, 162146, 162147, 162152, C08L 8900, C08K 334, C08K 340, D21F 1100

Patent

active

049636030

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.

REFERENCES:
patent: 4711685 (1987-12-01), Hillman

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