Hush Foam Absorber & Composite Sound Insulation

HUSH FOAM™
Absorber & Composite
Sound Insulation

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About BRD HUSH FOAM™ Products:

BRD HUSH FOAM™ polyurethane acoustical foam is manufactured to exacting specifications of a partially reticulated cellular structure. This controlled porosity of the nominal 2 lbs./ft.³ density UL-94/HF1 foam results in maximum acoustical absorption. Product categories include type HFU (absorber only), type HFUB (barrier composites), type HFUD (damping composites) and type HFQC (quilted composites). To protect the foam in applications that require resistance to water, grease, dust, oil and other contaminants, film facings can be applied to the material with minimal impact on acoustic performance because of the diaphragmatic action transferring sound energy to the internal construction. Here acoustic energy is dissipated by means of friction in the form of heat. The products are available in rolls, sheets or die cut parts.

Various examples of HUSH FOAM™ absorbers (type HFU) to meet OEM production requirements.

Application Guide:

Product Type*	Roll Size	Sheet Size	PSA Adhesive Backing	Film Facings	Performance and Application
HFU	54” x 50’	-----------	Yes (optional)	All (optional)	To increase absorption and minimize reverberant noise build-up when existing barrier provides sufficient blocking (transmission loss). Increase the absorber thickness for best low frequency performance.
HFUB	54” x 50’	54” x 72”	Yes (optional)	All (optional)	To increase absorption and blocking (transmission loss) when applied to lighter gauge sheet metal, plastic, wood or other existing panels, guards, cabinets, etc.
HFUD	-----------	54” x 40”	Yes (standard)	All (optional)	To increase absorption and reduce structure-borne noise caused by panel vibration and resonance. Only available with PSA backing and in sheets or die cut parts.
HFQC	54” x 50’	54” x 10’	No	RP Only (standard)	Dual purpose composite increases absorption and blocking like HFUB materials. Unique quilted fiberglass absorber layer offers greater durability and improved fire retardancy.

* Additional description listed on next page.

Noise and Vibration Control, Inc.

1-610-863-6300

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