Paper making and fiber liberation – Processes and products – Plural fiber containing
Patent
1990-02-23
1991-12-10
Fisher, Richard V.
Paper making and fiber liberation
Processes and products
Plural fiber containing
162204, 162222, 162225, 1621817, 181294, 252 62, 264119, D21H 518
Patent
active
050715119
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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Burns Todd J.
Fisher Richard V.
The Celotex Corporation
Vanecek Charles W.
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