FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 173
illbruck illsonic S 35 SV polyurethane foam, profiled
illsonic – S 35 SV, spezial S 35 SV
PTB reference data
Original description
illbruck illsonic S 35 SV polyurethane foam, profiled
Material properties
Manufacturer: illbruck GmbH
Thickness: 50 mm, 65 mm, 70 mm
Surface: profiled on one side
Up to fire class: UL 94 HF 1
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.87
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.55 | 0.95 | 1.15 | 1.15 | 1.20 |
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| Compare | Value | |
|---|---|---|
| 70 mm | αw0.87 | |
| 65 mm | αw0.85 | |
| 50 mm | αw0.76 |
Weight / density: ca. 35 kg / m³
Dimensions: 1000 x 1000 mm
