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 ACOUSTIC PANEL melamine foam system
ACOUSTIC PANEL
PTB reference data
Original description
illbruck ACOUSTIC PANEL melamine foam system
Material properties
Manufacturer: illbruck GmbH
Thickness: 90 mm, 60 mm, 30 mm
Backing: aluminum foil facing on the back
Surface: structured fabric on the surface
Up to fire class: not easily flammable (B1 per DIN 4102)
Application: ceiling, wall
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 3 variants
αw
0.70
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.75 | 1.00 | 0.95 | 0.80 | 0.70 | 0.55 |
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| Compare | Value | |
|---|---|---|
| 90 mm | αw0.70 | |
| 30 mm | αw0.70 | |
| 60 mm | αw0.65 |
Dimensions: 1200 x 600 mm, 2400 x 600 mm, 3000 x 600 mm
Measured values as a table (3 measurements)
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 90 mm · verdichtet, glatt | 0.70 | 0.68 | 0.72 | 0.82 | 1.00 | 1.21 | 1.10 | 0.99 | 0.94 | 0.90 | 0.88 | 0.81 | 0.75 | 0.72 | 0.70 | 0.62 | 0.57 | 0.54 | 0.51 |
| 60 mm · verdichtet, glatt | 0.65 | 0.27 | 0.37 | 0.52 | 0.78 | 1.14 | 1.03 | 0.97 | 0.95 | 0.85 | 0.78 | 0.74 | 0.70 | 0.65 | 0.61 | 0.55 | 0.53 | 0.49 | 0.42 |
| 30 mm · verdichtet, glatt | 0.70 | 0.15 | 0.20 | 0.28 | 0.40 | 0.54 | 0.64 | 0.80 | 1.00 | 0.94 | 0.89 | 0.86 | 0.80 | 0.72 | 0.67 | 0.60 | 0.58 | 0.57 | 0.56 |
Measured values as a table (3 measurements)
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