Perlite-based insulation board

Details Perlite-based insulation board Perlite-based insulation board

1996-07-15

1998-05-12

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

10616251, 1061645, 10616453, 1061646, 10620401, 1062161, 10621701, 106DIG2, 162171, 162145, 162175, 1621811, 162142, 162147, 252 62, D21H 1728, D21H 1766, D21J 100

Patent

active

057499543

ABSTRACT:
A perlite-based insulation board includes, by dry weight, between about 50% and about 76% expanded perlite; between about 15% and about 45% fibers; between about 1% and about 5% starch; between about 2% and about 9% bituminous material; and about 0% to about 3% alum. The fibers are between about 50% and about 95% by dry weight recycled newsprint fibers and between about 5% and about 50% by dry weight virgin cellulose fibers, such as flax and/or peanut hull fibers. In one embodiment, the virgin cellulose fibers are, by dry weight, between about 10% and 40% flax fibers and about 60% and 90% peanut hull fibers.

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