Perlite sound absorbing plate and sound insulating wall composed

Details Perlite sound absorbing plate and sound insulating wall composed Perlite sound absorbing plate and sound insulating wall composed

1978-07-25

1979-07-10

Hix, L. T.

Acoustics

Sound-modifying means

Sound absorbing panels

181286, 181293, 181294, 106 90, 106 97, 106DIG2, E04B 182, C04B 4300

Patent

active

041604911

ABSTRACT:
A perlite sound absorbing plate and a sound insulating wall constructed by arranging a number of said plates side by side and by assembling together into one integral body are disclosed. The plate is composed of a mixture including 1,000 cm.sup.3 by bulk volume of formed perlite particles each having a diameter of 0.1 to 7.0 mm, 100 to 140 g of cement, liquid rubber latex containing 5 to 20 g of solid ingredients and a suitable amount of water and produced by press molding with a compression ratio of 1.10 to 1.30. The wall is constructed by assembling a number of said plates each provided with a side groove with the aid of supporting columns and reinforcing plates, each having a ridge adapted to be engaged with the side groove of said plate.

REFERENCES:
patent: 1804884 (1931-05-01), Mager
patent: 1940528 (1933-12-01), Bond
patent: 2634207 (1953-04-01), Miscall et al.
patent: 2695669 (1954-11-01), Sidwell
patent: 2858227 (1958-10-01), Rodsky et al.
patent: 2921862 (1960-01-01), Sucetti
patent: 3095347 (1963-06-01), Becker
patent: 3847633 (1974-11-01), Race
patent: 3952830 (1976-04-01), Oshida et al.
patent: 4042406 (1977-08-01), Goay

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