FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter http://www.illbruck-raumakustik.de
Value from the PTB table, not verified
illbruck Waffel Dämm PUR foam panel
waffel dämm
PTB reference data
Original description
illbruck Waffel Dämm PUR foam panel
Material properties
Manufacturer: illbruck GmbH
Thickness: 65 mm
Surface: waffle structure
Up to fire class: B2 per DIN 4102 (normally flammable)
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.95
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.30 | 0.65 | 0.95 | 1.00 | 1.00 | 1.00 |
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Value from the PTB table, not verified
Measured values as a table (1 measurement)
| Build-up | αw | 100 Hz | 125 Hz | 160 Hz | 200 Hz | 250 Hz | 315 Hz | 400 Hz | 500 Hz | 630 Hz | 800 Hz | 1000 Hz | 1250 Hz | 1600 Hz | 2000 Hz | 2500 Hz | 3150 Hz | 4000 Hz | 5000 Hz |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 65 mm · waffelförmig | 0.95 | 0.21 | 0.27 | 0.35 | 0.50 | 0.70 | 0.73 | 0.82 | 0.94 | 1.03 | 1.09 | 1.13 | 1.11 | 1.08 | 1.07 | 1.07 | 1.08 | 1.11 | 1.13 |
Measured values as a table (1 measurement)
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