Acoustic insulator

Details Acoustic insulator Acoustic insulator

1994-06-03

1996-01-16

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181286, 181290, 181292, E04B 184

Patent

active

054849705

ABSTRACT:
Disclosed is a novel acoustic insulator constituted by a shaped article obtained by adding a binder to shreds of a plastic coated with a magnetic material, such as a magnetic tape or magnetic sheet and shaping the same into a sheet or a block having a bulk specific gravity of 0.05 to 0.4 and a gas permeation resistance of 3 to 90 dyn.S/cm.sup.4. Alternatively, shreds of a plastic coated with a magnetic material, such as a magnetic tape or magnetic sheet, are filled into casing members so that the bulk specific gravity of the composite product is 0.05 to 0.4 and its gas permeation resistance becomes 3 to 90 dyn.S/cm.sup.4.

REFERENCES:
patent: 3961682 (1976-06-01), Dausch et al.
patent: 4143495 (1979-03-01), Hintz
patent: 4709781 (1987-12-01), Scherzer
patent: 5272284 (1993-12-01), Schmanski

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