LOW AND ULTRA LOW DENSITY BUTYL CONSTRAINED LAYER PATCHES

The present disclosure relates to use of a sound and vibration damping system for use in automotive, appliance and other applications. Specifically, the sound and vibration damping system includes an elastomeric layer prepared from a low density butyl based composition and a constraining layer. The...

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Bibliographische Detailangaben
Hauptverfasser:	Fiero, Paul, Foukes, Richard
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TRANSPORTING
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Beschreibung
Zusammenfassung:	The present disclosure relates to use of a sound and vibration damping system for use in automotive, appliance and other applications. Specifically, the sound and vibration damping system includes an elastomeric layer prepared from a low density butyl based composition and a constraining layer. The low density butyl based composition comprises at least one polybutene, at least one butyl rubber and light weight fillers. The sound and vibration damping system of the present disclosure has a specific gravity less than 1.0 and a loss factor of not more than 0.4 at 20° F., 40° F. and 70° F. for frequencies of 200 Hz, 400 Hz and 800 Hz.