Acoustically porous building materials

Details Acoustically porous building materials Acoustically porous building materials

1985-01-14

1986-04-29

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428150, 428171, 428206, 428283, 156 628, 181284, 181290, B32B 1706, B32B 1904, B32B 3114, E04B 182

Patent

active

045856850

ABSTRACT:
The present invention relates to acoustically porous building materials which are produced by disposing an aggregate material on the surface of a dry-formed web comprising a fibrous material and an organic binder, and consolidating the composite material such that the aggregate material is embedded in the web. The resulting product is acoustically porous but, in one preferred embodiment, the embedding process provides a substantially planar surface which is relatively non-friable.

REFERENCES:
patent: 3357516 (1967-12-01), Cadotte et al.
patent: 3963847 (1976-06-01), Norgard
patent: 4476175 (1984-10-01), Forry et al.

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