Foam ear plug or earpiece utilizing recycled pulverized polyurethane foam

Foam ear plug or earpiece utilizing recycled pulverized polyurethane foam

An earpiece of flexible foam construction which incorporates recycled pulverized polyurethane foam (RPPF). RPPF constituting 5% to 30% of the improved foam has been found to be useful. The novel and unique nature of RPPF allows for the replacement of a higher cost component with a lower cost compone...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Gilder, Stephen D, Tiemens, Jim, Sanders, Larry
Format: Patent
Sprache:eng
Online-Zugang:Volltext bestellen
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Beschreibung
Zusammenfassung:An earpiece of flexible foam construction which incorporates recycled pulverized polyurethane foam (RPPF). RPPF constituting 5% to 30% of the improved foam has been found to be useful. The novel and unique nature of RPPF allows for the replacement of a higher cost component with a lower cost component while maintaining or improving physical properties, such as sound attenuation, sound control, comfort and fit.