moldagem de espuma absorvente de som

A sound absorbing molded foam article has a sound absorption value of 30-95 % (DIN 52215) at a frequency of 0.5-4 kHz. The foam is a non-fully bonded polyolefin or polystyrene particulate foam having an open volume of 10-40%.

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Bibliographische Detailangaben
Hauptverfasser:	HERMANN TATZEL, ISIDOOR DE GRAVE
Format:	Patent
Sprache:	por
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING METALLURGY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS SOUND-PRODUCING DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	A sound absorbing molded foam article has a sound absorption value of 30-95 % (DIN 52215) at a frequency of 0.5-4 kHz. The foam is a non-fully bonded polyolefin or polystyrene particulate foam having an open volume of 10-40%.