Air-borne and footstep noise insulating panels of synthetic resi

Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material

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428178, 428179, 428182, 428184, 428188, 428189, 4283166, E04C 108, E04C 244, B32B 320

Patent

active

047538414

ABSTRACT:
An air-borne and footstep noise insulating panel of synthetic resin foam is provided for floating floor pavements or floating wooden floors, said panel having in the interior thereof a multiplicity of voids extending normal or obliquely from one panel edge to the opposite panel edge. The panel preferably consists of a flexible closed-cell synthetic resin foam having a volume weight of 15 to 25 kg/m.sup.3, especially less than 20 kg/m.sup.3, having a cell diameter of less than 0.3 mm, and exhibiting good elastic recovery. The insulating panel has a dynamic stiffness, measured according to DIN 52214, of 1 to 13 MN/m.sup.3 and also possesses the required properties regarding long-term, burning, and insulating behavior.

REFERENCES:
patent: 2369006 (1945-02-01), Banks
patent: 2994327 (1961-08-01), Otto et al.
patent: 3297189 (1967-01-01), Carrasse
patent: 3890416 (1975-06-01), Bauer et al.
patent: 4435463 (1984-03-01), Roellchen
patent: 4618517 (1986-10-01), Simko, Jr.

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