Acoustic insulation is an important requirement for the human life today, since noise affects theefficiency of day-to-day activities and even cause various health problems Materials based on fibrousstructures show very good acoustic insulation properties, which however strongly depends on the type ofstructures used. The present paper reports the qualitative analysis of the acoustic insulation behavior ofvarious thermo-bonded nonwoven fabrics. The results showed that the acoustic insulation of thermo-bondednonwovens improves with their thickness. Also, nonwovens laminated with aluminum foil exhibited bettersound reduction performance than other single layered nonwovens made from recycled fibres and evenbetter performance than the nonwovens made from mineral wool, in the frequency range perceptible byhuman air.
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