Soundproofing panel and method of producing said panel

Details Soundproofing panel and method of producing said panel Soundproofing panel and method of producing said panel

1999-02-25

2000-07-11

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181286, 428116, E04B 182

Patent

active

060858656

ABSTRACT:
A soundproofing panel comprises a honeycomb core sandwiched between a solid skin and a porous skin, the cells of the honeycomb being divided in the direction of its thickness into at least two resonant cavities by a least one partition which is traversed by passages interlinking the cavities. The partitions are formed by a plurality of hollow microbeads having porous walls, the microbeads being bonded to one another and to the walls of the honeycomb at their points of contact. Such a soundproofing panel combines high performance in terms of linearity as a function of the level of sound excitation, attenuation band, bulk and mechanical strength.

REFERENCES:
patent: 4667768 (1987-05-01), Wirt
patent: 5997985 (1999-12-01), Clarke et al.

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