FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer's product sheet
Value from the PTB table, not verified
pinta acoustic cassette inlay willtec FM melamine foam
CASSETTE INLAY
PTB reference data
Original description
pinta acoustic cassette inlay willtec FM melamine foam
Material properties
Manufacturer: pinta acoustic gmbh
Thickness: 5 mm, 10 mm
Wall distance: 350 mm
Backing: perforated steel sheet
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.65
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.50 | 0.70 | 0.55 | 0.75 | 0.85 | 0.75 |
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| Compare | Value | |
|---|---|---|
| 10 mm | αw0.65 | |
| 5 mm | αw0.50 |
Weight / density: 80 kg/m³
Dimensions: variabel
Distance: 350 mm
Measured values as a table (2 measurements)
| Build-up | αw | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 5 mm · 80 kg/m³ · 350 mm | 0.50 | 0.50 | 0.70 | 0.40 | 0.55 | 0.65 | 0.60 |
| 10 mm · 80 kg/m³ · 350 mm | 0.65 | 0.50 | 0.70 | 0.55 | 0.75 | 0.85 | 0.75 |
Measured values as a table (2 measurements)
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