Noise suppression structure and method of making the same

Details Noise suppression structure and method of making the same Noise suppression structure and method of making the same

2004-02-20

2008-01-15

Donovan, Lincoln (Department: 2837)

Acoustics

Sound-modifying means

Sound absorbing panels

C181S284000, C181S286000, C181S290000, C428S156000, C428S158000

Reexamination Certificate

active

07318499

ABSTRACT:
An integrated noise suppression acoustic panel includes a back plate, a face plate, and a bulk foam absorber disposed between the back plate and the face plate. The bulk foam absorber is formed of a thermoset material, such as bismaleimide or phenolic, and is manufactured using a low pressure process. In particular, a foamable material is melted, and a blowing agent is mixed with the foamable material to obtain a mixture. The foam is formed and the mixture is cured by heating it to a temperature, and maintaining the mixture at the temperature for a time sufficient to cure the mixture.

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