The difficulties are often compounded by additional factors, such as the presence of water, fog, humidity, dirt, dust, ultraviolet light, chlorine and harsh chemicals.
In these cases, the solution can be represented by sound absorbing panels such as Stratocell® Whisper® of Sealed Air, a closed membrane polyethylene foam that uses a high performance honeycomb structure to absorb noise.
This material, resistant and acoustically ‘soft’, eliminates the problem of hard reflective surfaces that contribute to reverberation and echo.
Stratocell® Whisper® is light weight, easy to work with, install and remains unaltered in humid environments. Its superior noise reduction performance is proven by the effectiveness obtained in some particularly critical applications, such as road and rail traffic and in industrial machinery.
Weighing less than 1.5 kilograms per square meter (50mm thickness), Stratocell® Whisper® is easy to carry and handle; guarantees a sustainable use of raw materials.
Stratocell® Whisper® it does not contain fibers, has low values of VOC (volatile organic compounds) and zero ODP (harmless to ozone). It does not cause irritation, is not crumbly and does not crumble. In the particle emissions test carried out by the Danish Society of Indoor Climate (for small particles up to 0.7 μm) Stratocell® Whisper® obtained, over a period of 15 hours, the average result of 0.02 mg / m2 . A value that represents only 1% of the maximum allowed limit for low particle emissions, which is 2 mg / m2.
The material Stratocell® Whisper® UV has been tested for over 2000 hours in a QUV accelerated aging chamber. The results showed that, following exposure to UV rays, the material exhibited an acoustic behavior comparable to that not exposed.
Stratocell® Whisper® UV is classified as self-extinguishing material according to DIN 4102 Class B2.
Stratocell® Whisper® FR foam panels are fire resistant and are classified:
EN 13501 Classe B S1 D0 a 20-30 mm
EN 13501 Classe B S2 D0 a 40-50 mm
DIN 4102 Class B1
Fire tests are available for the railway, mass transportation, nautical and automotive sectors.
Stratocell® Whisper® is soundproofing, that is, it has an incredibly high resistance to air flow, reaching the following performances: Rw 13.8 for 50 mm of thickness, Rw 16 for 60 mm, Rw 18 for 100 mm. This means that it not only absorbs sound, but contributes significantly to sound impedance, with performance comparable to what could be achieved with a wall application.
I vertical baffles they are the cheapest method of obtaining sound absorption in an interior space. Stratocell® Whisper® absorbs sound on both sides, so the baffles allow you to optimize the amount of material and achieve maximum results. As many as 16 acoustic baffles per hour have been installed in large structures.
Source: Le ultime news dal mondo dell'edilizia by www.edilportale.com.
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